diff --git a/captcha/AHGBold.ttf b/captcha/AHGBold.ttf deleted file mode 100644 index 764b23d..0000000 Binary files a/captcha/AHGBold.ttf and /dev/null differ diff --git a/captcha/LICENSE.txt b/captcha/LICENSE.txt deleted file mode 100644 index 889bc2c..0000000 --- a/captcha/LICENSE.txt +++ /dev/null @@ -1,25 +0,0 @@ -COPYRIGHT: - Copyright (c) 2011 Drew Phillips - All rights reserved. - - Redistribution and use in source and binary forms, with or without modification, - are permitted provided that the following conditions are met: - - - Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. - diff --git a/captcha/README.FONT.txt b/captcha/README.FONT.txt deleted file mode 100644 index d4770de..0000000 --- a/captcha/README.FONT.txt +++ /dev/null @@ -1,12 +0,0 @@ -AHGBold.ttf is used by Securimage under the following license: - -Alte Haas Grotesk is a typeface that look like an helvetica printed in an old Muller-Brockmann Book. - -These fonts are freeware and can be distributed as long as they are -together with this text file. - -I would appreciate very much to see what you have done with it anyway. - -yann le coroller -www.yannlecoroller.com -yann@lecoroller.com \ No newline at end of file diff --git a/captcha/README.txt b/captcha/README.txt deleted file mode 100644 index 2acb06a..0000000 --- a/captcha/README.txt +++ /dev/null @@ -1,180 +0,0 @@ -NAME: - - Securimage - A PHP class for creating captcha images and audio with many options. - -VERSION: 3.2RC2 - -AUTHOR: - - Drew Phillips - -DOWNLOAD: - - The latest version can always be - found at http://www.phpcaptcha.org - -DOCUMENTATION: - - Online documentation of the class, methods, and variables can - be found at http://www.phpcaptcha.org/Securimage_Docs/ - -REQUIREMENTS: - PHP 5.2 or greater - GD 2.0 - FreeType (Required, for TTF fonts) - -SYNOPSIS: - - require_once 'securimage.php'; - - $image = new Securimage(); - - $image->show(); - - // Code Validation - - $image = new Securimage(); - if ($image->check($_POST['code']) == true) { - echo "Correct!"; - } else { - echo "Sorry, wrong code."; - } - -DESCRIPTION: - - What is Securimage? - - Securimage is a PHP class that is used to generate and validate CAPTCHA images. - The classes uses an existing PHP session or creates its own if none is found to store the - CAPTCHA code. Variables within the class are used to control the style and display of the image. - The class supports TTF fonts and effects for strengthening the security of the image. - An audible code can also be streamed to the browser for visually impared users. - - -COPYRIGHT: - Copyright (c) 2012 Drew Phillips - All rights reserved. - - Redistribution and use in source and binary forms, with or without modification, - are permitted provided that the following conditions are met: - - - Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. - - ----------------------------------------------------------------------------- - The WavFile.php class used in Securimage by Drew Phillips and Paul Voegler is - used under the BSD License. See WavFile.php for details. - Many thanks to Paul Voegler (http://voegler.eu/audio/pub) for contributing to - Securimage. - - ----------------------------------------------------------------------------- - Flash code created for Securimage by Age Bosma & Mario Romero (animario@hotmail.com) - Many thanks for releasing this to the project! - - ------------------------------------------------------------------------------ - Portions of Securimage contain code from Han-Kwang Nienhuys' PHP captcha - - Han-Kwang Nienhuys' PHP captcha - Copyright June 2007 - - This copyright message and attribution must be preserved upon - modification. Redistribution under other licenses is expressly allowed. - Other licenses include GPL 2 or higher, BSD, and non-free licenses. - The original, unrestricted version can be obtained from - http://www.lagom.nl/linux/hkcaptcha/ - - ------------------------------------------------------------------------------- - AHGBold.ttf (AlteHaasGroteskBold.ttf) font was created by Yann Le Coroller and is distributed as freeware - - Alte Haas Grotesk is a typeface that look like an helvetica printed in an old Muller-Brockmann Book. - - These fonts are freeware and can be distributed as long as they are - together with this text file. - - I would appreciate very much to see what you have done with it anyway. - - yann le coroller - www.yannlecoroller.com - yann@lecoroller.com - - ------------------------------------------------------------------------------- - Portions of securimage_play.swf use the PopForge flash library for playing audio - - /** - * Copyright(C) 2007 Andre Michelle and Joa Ebert - * - * PopForge is an ActionScript3 code sandbox developed by Andre Michelle and Joa Ebert - * http://sandbox.popforge.de - * - * PopforgeAS3Audio is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * PopforgeAS3Audio is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see - */ - - ------------------------------------------------------------------------------- - Some graphics used are from the Humility Icon Pack by WorLord - - License: GNU/GPL (http://findicons.com/pack/1723/humility) - http://findicons.com/icon/192558/gnome_volume_control - http://findicons.com/icon/192562/gtk_refresh - - ------------------------------------------------------------------------------- - Background noise sound files are from SoundJay.com - http://www.soundjay.com/tos.html - - All sound effects on this website are created by us and protected under - the copyright laws, international treaty provisions and other applicable - laws. By downloading sounds, music or any material from this site implies - that you have read and accepted these terms and conditions: - - Sound Effects - You are allowed to use the sounds free of charge and royalty free in your - projects (such as films, videos, games, presentations, animations, stage - plays, radio plays, audio books, apps) be it for commercial or - non-commercial purposes. - - But you are NOT allowed to - - post the sounds (as sound effects or ringtones) on any website for - others to download, copy or use - - use them as a raw material to create sound effects or ringtones that - you will sell, distribute or offer for downloading - - sell, re-sell, license or re-license the sounds (as individual sound - effects or as a sound effects library) to anyone else - - claim the sounds as yours - - link directly to individual sound files - - distribute the sounds in apps or computer programs that are clearly - sound related in nature (such as sound machine, sound effect - generator, ringtone maker, funny sounds app, sound therapy app, etc.) - or in apps or computer programs that use the sounds as the program's - sound resource library for other people's use (such as animation - creator, digital book creator, song maker software, etc.). If you are - developing such computer programs, contact us for licensing options. - - If you use the sound effects, please consider giving us a credit and - linking back to us but it's not required. - - \ No newline at end of file diff --git a/captcha/WavFile.php b/captcha/WavFile.php deleted file mode 100644 index 9eff88e..0000000 --- a/captcha/WavFile.php +++ /dev/null @@ -1,1861 +0,0 @@ - -* File: WavFile.php
-* -* Copyright (c) 2012, Drew Phillips -* All rights reserved. -* -* Redistribution and use in source and binary forms, with or without modification, -* are permitted provided that the following conditions are met: -* -* - Redistributions of source code must retain the above copyright notice, -* this list of conditions and the following disclaimer. -* - Redistributions in binary form must reproduce the above copyright notice, -* this list of conditions and the following disclaimer in the documentation -* and/or other materials provided with the distribution. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE -* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -* POSSIBILITY OF SUCH DAMAGE. -* -* Any modifications to the library should be indicated clearly in the source code -* to inform users that the changes are not a part of the original software.

-* -* @copyright 2012 Drew Phillips -* @author Drew Phillips -* @author Paul Voegler -* @version 1.0RC1 (April 2012) -* @package PHPWavUtils -* @license BSD License -* -* Changelog: -* -* 1.0 RC1 (4/20/2012) -* - Initial release candidate -* - Supports 8, 16, 24, 32 bit PCM, 32-bit IEEE FLOAT, Extensible Format -* - Support for 18 channels of audio -* - Ability to read an offset from a file to reduce memory footprint with large files -* - Single-pass audio filter processing -* - Highly accurate and efficient mix and normalization filters (http://www.voegler.eu/pub/audio/) -* - Utility filters for degrading audio, and inserting silence -* -* 0.6 (4/12/2012) -* - Support 8, 16, 24, 32 bit and PCM float (Paul Voegler) -* - Add normalize filter, misc improvements and fixes (Paul Voegler) -* - Normalize parameters to filter() to use filter constants as array indices -* - Add option to mix filter to loop the target file if the source is longer -* -* 0.5 (4/3/2012) -* - Fix binary pack routine (Paul Voegler) -* - Add improved mixing function (Paul Voegler) -* -*/ - -class WavFile -{ - /*%******************************************************************************************%*/ - // Class constants - - /** @var int Filter flag for mixing two files */ - const FILTER_MIX = 0x01; - - /** @var int Filter flag for normalizing audio data */ - const FILTER_NORMALIZE = 0x02; - - /** @var int Filter flag for degrading audio data */ - const FILTER_DEGRADE = 0x04; - - /** @var int Maximum number of channels */ - const MAX_CHANNEL = 18; - - /** @var int Maximum sample rate */ - const MAX_SAMPLERATE = 192000; - - /** Channel Locations for ChannelMask */ - const SPEAKER_DEFAULT = 0x000000; - const SPEAKER_FRONT_LEFT = 0x000001; - const SPEAKER_FRONT_RIGHT = 0x000002; - const SPEAKER_FRONT_CENTER = 0x000004; - const SPEAKER_LOW_FREQUENCY = 0x000008; - const SPEAKER_BACK_LEFT = 0x000010; - const SPEAKER_BACK_RIGHT = 0x000020; - const SPEAKER_FRONT_LEFT_OF_CENTER = 0x000040; - const SPEAKER_FRONT_RIGHT_OF_CENTER = 0x000080; - const SPEAKER_BACK_CENTER = 0x000100; - const SPEAKER_SIDE_LEFT = 0x000200; - const SPEAKER_SIDE_RIGHT = 0x000400; - const SPEAKER_TOP_CENTER = 0x000800; - const SPEAKER_TOP_FRONT_LEFT = 0x001000; - const SPEAKER_TOP_FRONT_CENTER = 0x002000; - const SPEAKER_TOP_FRONT_RIGHT = 0x004000; - const SPEAKER_TOP_BACK_LEFT = 0x008000; - const SPEAKER_TOP_BACK_CENTER = 0x010000; - const SPEAKER_TOP_BACK_RIGHT = 0x020000; - const SPEAKER_ALL = 0x03FFFF; - - /** @var int PCM Audio Format */ - const WAVE_FORMAT_PCM = 0x0001; - - /** @var int IEEE FLOAT Audio Format */ - const WAVE_FORMAT_IEEE_FLOAT = 0x0003; - - /** @var int EXTENSIBLE Audio Format - actual audio format defined by SubFormat */ - const WAVE_FORMAT_EXTENSIBLE = 0xFFFE; - - /** @var string PCM Audio Format SubType - LE hex representation of GUID {00000001-0000-0010-8000-00AA00389B71} */ - const WAVE_SUBFORMAT_PCM = "0100000000001000800000aa00389b71"; - - /** @var string IEEE FLOAT Audio Format SubType - LE hex representation of GUID {00000003-0000-0010-8000-00AA00389B71} */ - const WAVE_SUBFORMAT_IEEE_FLOAT = "0300000000001000800000aa00389b71"; - - - /*%******************************************************************************************%*/ - // Properties - - /** @var array Log base modifier lookup table for a given threshold (in 0.05 steps) used by normalizeSample. - * Adjusts the slope (1st derivative) of the log function at the threshold to 1 for a smooth transition - * from linear to logarithmic amplitude output. */ - protected static $LOOKUP_LOGBASE = array( - 2.513, 2.667, 2.841, 3.038, 3.262, - 3.520, 3.819, 4.171, 4.589, 5.093, - 5.711, 6.487, 7.483, 8.806, 10.634, - 13.302, 17.510, 24.970, 41.155, 96.088 - ); - - /** @var int The actual physical file size */ - protected $_actualSize; - - /** @var int The size of the file in RIFF header */ - protected $_chunkSize; - - /** @var int The size of the "fmt " chunk */ - protected $_fmtChunkSize; - - /** @var int The size of the extended "fmt " data */ - protected $_fmtExtendedSize; - - /** @var int The size of the "fact" chunk */ - protected $_factChunkSize; - - /** @var int Size of the data chunk */ - protected $_dataSize; - - /** @var int Size of the data chunk in the opened wav file */ - protected $_dataSize_fp; - - /** @var int Does _dataSize really reflect strlen($_samples)? Case when a wav file is read with readData = false */ - protected $_dataSize_valid; - - /** @var int Starting offset of data chunk */ - protected $_dataOffset; - - /** @var int The audio format - WavFile::WAVE_FORMAT_* */ - protected $_audioFormat; - - /** @var int The audio subformat - WavFile::WAVE_SUBFORMAT_* */ - protected $_audioSubFormat; - - /** @var int Number of channels in the audio file */ - protected $_numChannels; - - /** @var int The channel mask */ - protected $_channelMask; - - /** @var int Samples per second */ - protected $_sampleRate; - - /** @var int Number of bits per sample */ - protected $_bitsPerSample; - - /** @var int Number of valid bits per sample */ - protected $_validBitsPerSample; - - /** @var int NumChannels * BitsPerSample/8 */ - protected $_blockAlign; - - /** @var int Number of sample blocks */ - protected $_numBlocks; - - /** @var int Bytes per second */ - protected $_byteRate; - - /** @var string Binary string of samples */ - protected $_samples; - - /** @var resource The file pointer used for reading wavs from file or memory */ - protected $_fp; - - - /*%******************************************************************************************%*/ - // Special methods - - /** - * WavFile Constructor. - * - * - * $wav1 = new WavFile(2, 44100, 16); // new wav with 2 channels, at 44100 samples/sec and 16 bits per sample - * $wav2 = new WavFile('./audio/sound.wav'); // open and read wav file - * - * - * @param string|int $numChannelsOrFileName (Optional) If string, the filename of the wav file to open. The number of channels otherwise. Defaults to 1. - * @param int|bool $sampleRateOrReadData (Optional) If opening a file and boolean, decides whether to read the data chunk or not. Defaults to true. The sample rate in samples per second otherwise. 8000 = standard telephone, 16000 = wideband telephone, 32000 = FM radio and 44100 = CD quality. Defaults to 8000. - * @param int $bitsPerSample (Optional) The number of bits per sample. Has to be 8, 16 or 24 for PCM audio or 32 for IEEE FLOAT audio. 8 = telephone, 16 = CD and 24 or 32 = studio quality. Defaults to 8. - * @throws WavFormatException - * @throws WavFileException - */ - public function __construct($numChannelsOrFileName = null, $sampleRateOrReadData = null, $bitsPerSample = null) - { - $this->_actualSize = 44; - $this->_chunkSize = 36; - $this->_fmtChunkSize = 16; - $this->_fmtExtendedSize = 0; - $this->_factChunkSize = 0; - $this->_dataSize = 0; - $this->_dataSize_fp = 0; - $this->_dataSize_valid = true; - $this->_dataOffset = 44; - $this->_audioFormat = self::WAVE_FORMAT_PCM; - $this->_audioSubFormat = null; - $this->_numChannels = 1; - $this->_channelMask = self::SPEAKER_DEFAULT; - $this->_sampleRate = 8000; - $this->_bitsPerSample = 8; - $this->_validBitsPerSample = 8; - $this->_blockAlign = 1; - $this->_numBlocks = 0; - $this->_byteRate = 8000; - $this->_samples = ''; - $this->_fp = null; - - - if (is_string($numChannelsOrFileName)) { - $this->openWav($numChannelsOrFileName, is_bool($sampleRateOrReadData) ? $sampleRateOrReadData : true); - - } else { - $this->setNumChannels(is_null($numChannelsOrFileName) ? 1 : $numChannelsOrFileName) - ->setSampleRate(is_null($sampleRateOrReadData) ? 8000 : $sampleRateOrReadData) - ->setBitsPerSample(is_null($bitsPerSample) ? 8 : $bitsPerSample); - } - } - - public function __destruct() { - if (is_resource($this->_fp)) $this->closeWav(); - } - - public function __clone() { - $this->_fp = null; - } - - /** - * Output the wav file headers and data. - * - * @return string The encoded file. - */ - public function __toString() - { - return $this->makeHeader() . - $this->getDataSubchunk(); - } - - - /*%******************************************************************************************%*/ - // Static methods - - /** - * Unpacks a single binary sample to numeric value. - * - * @param string $sampleBinary (Required) The sample to decode. - * @param int $bitDepth (Optional) The bits per sample to decode. If omitted, derives it from the length of $sampleBinary. - * @return int|float The numeric sample value. Float for 32-bit samples. Returns null for unsupported bit depths. - */ - public static function unpackSample($sampleBinary, $bitDepth = null) - { - if ($bitDepth === null) { - $bitDepth = strlen($sampleBinary) * 8; - } - - switch ($bitDepth) { - case 8: - // unsigned char - return ord($sampleBinary); - - case 16: - // signed short, little endian - $data = unpack('v', $sampleBinary); - $sample = $data[1]; - if ($sample >= 0x8000) { - $sample -= 0x10000; - } - return $sample; - - case 24: - // 3 byte packed signed integer, little endian - $data = unpack('C3', $sampleBinary); - $sample = $data[1] | ($data[2] << 8) | ($data[3] << 16); - if ($sample >= 0x800000) { - $sample -= 0x1000000; - } - return $sample; - - case 32: - // 32-bit float - $data = unpack('f', $sampleBinary); - return $data[1]; - - default: - return null; - } - } - - /** - * Packs a single numeric sample to binary. - * - * @param int|float $sample (Required) The sample to encode. Has to be within valid range for $bitDepth. Float values only for 32 bits. - * @param int $bitDepth (Required) The bits per sample to encode with. - * @return string The encoded binary sample. Returns null for unsupported bit depths. - */ - public static function packSample($sample, $bitDepth) - { - switch ($bitDepth) { - case 8: - // unsigned char - return chr($sample); - - case 16: - // signed short, little endian - if ($sample < 0) { - $sample += 0x10000; - } - return pack('v', $sample); - - case 24: - // 3 byte packed signed integer, little endian - if ($sample < 0) { - $sample += 0x1000000; - } - return pack('C3', $sample & 0xff, ($sample >> 8) & 0xff, ($sample >> 16) & 0xff); - - case 32: - // 32-bit float - return pack('f', $sample); - - default: - return null; - } - } - - /** - * Unpacks a binary sample block to numeric values. - * - * @param string $sampleBlock (Required) The binary sample block (all channels). - * @param int $bitDepth (Required) The bits per sample to decode. - * @param int $numChannels (Optional) The number of channels to decode. If omitted, derives it from the length of $sampleBlock and $bitDepth. - * @return array The sample values as an array of integers of floats for 32 bits. First channel is array index 1. - */ - public static function unpackSampleBlock($sampleBlock, $bitDepth, $numChannels = null) { - $sampleBytes = $bitDepth / 8; - if ($numChannels === null) { - $numChannels = strlen($sampleBlock) / $sampleBytes; - } - - $samples = array(); - for ($i = 0; $i < $numChannels; $i++) { - $sampleBinary = substr($sampleBlock, $i * $sampleBytes, $sampleBytes); - $samples[$i + 1] = self::unpackSample($sampleBinary, $bitDepth); - } - - return $samples; - } - - /** - * Packs an array of numeric channel samples to a binary sample block. - * - * @param array $samples (Required) The array of channel sample values. Expects float values for 32 bits and integer otherwise. - * @param int $bitDepth (Required) The bits per sample to encode with. - * @return string The encoded binary sample block. - */ - public static function packSampleBlock($samples, $bitDepth) { - $sampleBlock = ''; - foreach($samples as $sample) { - $sampleBlock .= self::packSample($sample, $bitDepth); - } - - return $sampleBlock; - } - - /** - * Normalizes a float audio sample. Maximum input range assumed for compression is [-2, 2]. - * See http://www.voegler.eu/pub/audio/ for more information. - * - * @param float $sampleFloat (Required) The float sample to normalize. - * @param float $threshold (Required) The threshold or gain factor for normalizing the amplitude.
    - *
  • >= 1 - Normalize by multiplying by the threshold (boost - positive gain).
    - * A value of 1 in effect means no normalization (and results in clipping).
    • - *
  • <= -1 - Normalize by dividing by the the absolute value of threshold (attenuate - negative gain).
    - * A factor of 2 (-2) is about 6dB reduction in volume.
    • - *
  • [0, 1) - (open inverval - not including 1) - The threshold - * above which amplitudes are comressed logarithmically.
    - * e.g. 0.6 to leave amplitudes up to 60% "as is" and compress above.
    • - *
  • (-1, 0) - (open inverval - not including -1 and 0) - The threshold - * above which amplitudes are comressed linearly.
    - * e.g. -0.6 to leave amplitudes up to 60% "as is" and compress above.
- * @return float The normalized sample. - **/ - public static function normalizeSample($sampleFloat, $threshold) { - // apply positive gain - if ($threshold >= 1) { - return $sampleFloat * $threshold; - } - - // apply negative gain - if ($threshold <= -1) { - return $sampleFloat / -$threshold; - } - - $sign = $sampleFloat < 0 ? -1 : 1; - $sampleAbs = abs($sampleFloat); - - // logarithmic compression - if ($threshold >= 0 && $threshold < 1 && $sampleAbs > $threshold) { - $loga = self::$LOOKUP_LOGBASE[(int)($threshold * 20)]; // log base modifier - return $sign * ($threshold + (1 - $threshold) * log(1 + $loga * ($sampleAbs - $threshold) / (2 - $threshold)) / log(1 + $loga)); - } - - // linear compression - $thresholdAbs = abs($threshold); - if ($threshold > -1 && $threshold < 0 && $sampleAbs > $thresholdAbs) { - return $sign * ($thresholdAbs + (1 - $thresholdAbs) / (2 - $thresholdAbs) * ($sampleAbs - $thresholdAbs)); - } - - // else ? - return $sampleFloat; - } - - - /*%******************************************************************************************%*/ - // Getter and Setter methods for properties - - public function getActualSize() { - return $this->_actualSize; - } - - protected function setActualSize($actualSize = null) { - if (is_null($actualSize)) { - $this->_actualSize = 8 + $this->_chunkSize; // + "RIFF" header (ID + size) - } else { - $this->_actualSize = $actualSize; - } - - return $this; - } - - public function getChunkSize() { - return $this->_chunkSize; - } - - protected function setChunkSize($chunkSize = null) { - if (is_null($chunkSize)) { - $this->_chunkSize = 4 + // "WAVE" chunk - 8 + $this->_fmtChunkSize + // "fmt " subchunk - ($this->_factChunkSize > 0 ? 8 + $this->_factChunkSize : 0) + // "fact" subchunk - 8 + $this->_dataSize + // "data" subchunk - ($this->_dataSize & 1); // padding byte - } else { - $this->_chunkSize = $chunkSize; - } - - $this->setActualSize(); - - return $this; - } - - public function getFmtChunkSize() { - return $this->_fmtChunkSize; - } - - protected function setFmtChunkSize($fmtChunkSize = null) { - if (is_null($fmtChunkSize)) { - $this->_fmtChunkSize = 16 + $this->_fmtExtendedSize; - } else { - $this->_fmtChunkSize = $fmtChunkSize; - } - - $this->setChunkSize() // implicit setActualSize() - ->setDataOffset(); - - return $this; - } - - public function getFmtExtendedSize() { - return $this->_fmtExtendedSize; - } - - protected function setFmtExtendedSize($fmtExtendedSize = null) { - if (is_null($fmtExtendedSize)) { - if ($this->_audioFormat == self::WAVE_FORMAT_EXTENSIBLE) { - $this->_fmtExtendedSize = 2 + 22; // extension size for WAVE_FORMAT_EXTENSIBLE - } elseif ($this->_audioFormat != self::WAVE_FORMAT_PCM) { - $this->_fmtExtendedSize = 2 + 0; // empty extension - } else { - $this->_fmtExtendedSize = 0; // no extension, only for WAVE_FORMAT_PCM - } - } else { - $this->_fmtExtendedSize = $fmtExtendedSize; - } - - $this->setFmtChunkSize(); // implicit setSize(), setActualSize(), setDataOffset() - - return $this; - } - - public function getFactChunkSize() { - return $this->_factChunkSize; - } - - protected function setFactChunkSize($factChunkSize = null) { - if (is_null($factChunkSize)) { - if ($this->_audioFormat != self::WAVE_FORMAT_PCM) { - $this->_factChunkSize = 4; - } else { - $this->_factChunkSize = 0; - } - } else { - $this->_factChunkSize = $factChunkSize; - } - - $this->setChunkSize() // implicit setActualSize() - ->setDataOffset(); - - return $this; - } - - public function getDataSize() { - return $this->_dataSize; - } - - protected function setDataSize($dataSize = null) { - if (is_null($dataSize)) { - $this->_dataSize = strlen($this->_samples); - } else { - $this->_dataSize = $dataSize; - } - - $this->setChunkSize() // implicit setActualSize() - ->setNumBlocks(); - $this->_dataSize_valid = true; - - return $this; - } - - public function getDataOffset() { - return $this->_dataOffset; - } - - protected function setDataOffset($dataOffset = null) { - if (is_null($dataOffset)) { - $this->_dataOffset = 8 + // "RIFF" header (ID + size) - 4 + // "WAVE" chunk - 8 + $this->_fmtChunkSize + // "fmt " subchunk - ($this->_factChunkSize > 0 ? 8 + $this->_factChunkSize : 0) + // "fact" subchunk - 8; // "data" subchunk - } else { - $this->_dataOffset = $dataOffset; - } - - return $this; - } - - public function getAudioFormat() { - return $this->_audioFormat; - } - - protected function setAudioFormat($audioFormat = null) { - if (is_null($audioFormat)) { - if (($this->_bitsPerSample <= 16 || $this->_bitsPerSample == 32) - && $this->_validBitsPerSample == $this->_bitsPerSample - && $this->_channelMask == self::SPEAKER_DEFAULT - && $this->_numChannels <= 2) { - if ($this->_bitsPerSample <= 16) { - $this->_audioFormat = self::WAVE_FORMAT_PCM; - } else { - $this->_audioFormat = self::WAVE_FORMAT_IEEE_FLOAT; - } - } else { - $this->_audioFormat = self::WAVE_FORMAT_EXTENSIBLE; - } - } else { - $this->_audioFormat = $audioFormat; - } - - $this->setAudioSubFormat() - ->setFactChunkSize() // implicit setSize(), setActualSize(), setDataOffset() - ->setFmtExtendedSize(); // implicit setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() - - return $this; - } - - public function getAudioSubFormat() { - return $this->_audioSubFormat; - } - - protected function setAudioSubFormat($audioSubFormat = null) { - if (is_null($audioSubFormat)) { - if ($this->_bitsPerSample == 32) { - $this->_audioSubFormat = self::WAVE_SUBFORMAT_IEEE_FLOAT; // 32 bits are IEEE FLOAT in this class - } else { - $this->_audioSubFormat = self::WAVE_SUBFORMAT_PCM; // 8, 16 and 24 bits are PCM in this class - } - } else { - $this->_audioSubFormat = $audioSubFormat; - } - - return $this; - } - - public function getNumChannels() { - return $this->_numChannels; - } - - public function setNumChannels($numChannels) { - if ($numChannels < 1 || $numChannels > self::MAX_CHANNEL) { - throw new WavFileException('Unsupported number of channels. Only up to ' . self::MAX_CHANNEL . ' channels are supported.'); - } elseif ($this->_samples !== '') { - trigger_error('Wav already has sample data. Changing the number of channels does not convert and may corrupt the data.', E_USER_NOTICE); - } - - $this->_numChannels = (int)$numChannels; - - $this->setAudioFormat() // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() - ->setByteRate() - ->setBlockAlign(); // implicit setNumBlocks() - - return $this; - } - - public function getChannelMask() { - return $this->_channelMask; - } - - public function setChannelMask($channelMask = self::SPEAKER_DEFAULT) { - if ($channelMask != 0) { - // count number of set bits - Hamming weight - $c = (int)$channelMask; - $n = 0; - while ($c > 0) { - $n += $c & 1; - $c >>= 1; - } - if ($n != $this->_numChannels || (((int)$channelMask | self::SPEAKER_ALL) != self::SPEAKER_ALL)) { - throw new WavFileException('Invalid channel mask. The number of channels does not match the number of locations in the mask.'); - } - } - - $this->_channelMask = (int)$channelMask; - - $this->setAudioFormat(); // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() - - return $this; - } - - public function getSampleRate() { - return $this->_sampleRate; - } - - public function setSampleRate($sampleRate) { - if ($sampleRate < 1 || $sampleRate > self::MAX_SAMPLERATE) { - throw new WavFileException('Invalid sample rate.'); - } elseif ($this->_samples !== '') { - trigger_error('Wav already has sample data. Changing the sample rate does not convert the data and may yield undesired results.', E_USER_NOTICE); - } - - $this->_sampleRate = (int)$sampleRate; - - $this->setByteRate(); - - return $this; - } - - public function getBitsPerSample() { - return $this->_bitsPerSample; - } - - public function setBitsPerSample($bitsPerSample) { - if (!in_array($bitsPerSample, array(8, 16, 24, 32))) { - throw new WavFileException('Unsupported bits per sample. Only 8, 16, 24 and 32 bits are supported.'); - } elseif ($this->_samples !== '') { - trigger_error('Wav already has sample data. Changing the bits per sample does not convert and may corrupt the data.', E_USER_NOTICE); - } - - $this->_bitsPerSample = (int)$bitsPerSample; - - $this->setValidBitsPerSample() // implicit setAudioFormat(), setAudioSubFormat(), setFmtChunkSize(), setFactChunkSize(), setSize(), setActualSize(), setDataOffset() - ->setByteRate() - ->setBlockAlign(); // implicit setNumBlocks() - - return $this; - } - - public function getValidBitsPerSample() { - return $this->_validBitsPerSample; - } - - protected function setValidBitsPerSample($validBitsPerSample = null) { - if (is_null($validBitsPerSample)) { - $this->_validBitsPerSample = $this->_bitsPerSample; - } else { - if ($validBitsPerSample < 1 || $validBitsPerSample > $this->_bitsPerSample) { - throw new WavFileException('ValidBitsPerSample cannot be greater than BitsPerSample.'); - } - $this->_validBitsPerSample = (int)$validBitsPerSample; - } - - $this->setAudioFormat(); // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() - - return $this; - } - - public function getBlockAlign() { - return $this->_blockAlign; - } - - protected function setBlockAlign($blockAlign = null) { - if (is_null($blockAlign)) { - $this->_blockAlign = $this->_numChannels * $this->_bitsPerSample / 8; - } else { - $this->_blockAlign = $blockAlign; - } - - $this->setNumBlocks(); - - return $this; - } - - public function getNumBlocks() - { - return $this->_numBlocks; - } - - protected function setNumBlocks($numBlocks = null) { - if (is_null($numBlocks)) { - $this->_numBlocks = (int)($this->_dataSize / $this->_blockAlign); // do not count incomplete sample blocks - } else { - $this->_numBlocks = $numBlocks; - } - - return $this; - } - - public function getByteRate() { - return $this->_byteRate; - } - - protected function setByteRate($byteRate = null) { - if (is_null($byteRate)) { - $this->_byteRate = $this->_sampleRate * $this->_numChannels * $this->_bitsPerSample / 8; - } else { - $this->_byteRate = $byteRate; - } - - return $this; - } - - public function getSamples() { - return $this->_samples; - } - - public function setSamples(&$samples = '') { - if (strlen($samples) % $this->_blockAlign != 0) { - throw new WavFileException('Incorrect samples size. Has to be a multiple of BlockAlign.'); - } - - $this->_samples = $samples; - - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - - return $this; - } - - - /*%******************************************************************************************%*/ - // Getters - - public function getMinAmplitude() - { - if ($this->_bitsPerSample == 8) { - return 0; - } elseif ($this->_bitsPerSample == 32) { - return -1.0; - } else { - return -(1 << ($this->_bitsPerSample - 1)); - } - } - - public function getZeroAmplitude() - { - if ($this->_bitsPerSample == 8) { - return 0x80; - } elseif ($this->_bitsPerSample == 32) { - return 0.0; - } else { - return 0; - } - } - - public function getMaxAmplitude() - { - if($this->_bitsPerSample == 8) { - return 0xFF; - } elseif($this->_bitsPerSample == 32) { - return 1.0; - } else { - return (1 << ($this->_bitsPerSample - 1)) - 1; - } - } - - - /*%******************************************************************************************%*/ - // Wave file methods - - /** - * Construct a wav header from this object. Includes "fact" chunk in necessary. - * http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/wave.html - * - * @return string The RIFF header data. - */ - public function makeHeader() - { - // reset and recalculate - $this->setAudioFormat(); // implicit setAudioSubFormat(), setFactChunkSize(), setFmtExtendedSize(), setFmtChunkSize(), setSize(), setActualSize(), setDataOffset() - $this->setNumBlocks(); - - // RIFF header - $header = pack('N', 0x52494646); // ChunkID - "RIFF" - $header .= pack('V', $this->getChunkSize()); // ChunkSize - $header .= pack('N', 0x57415645); // Format - "WAVE" - - // "fmt " subchunk - $header .= pack('N', 0x666d7420); // SubchunkID - "fmt " - $header .= pack('V', $this->getFmtChunkSize()); // SubchunkSize - $header .= pack('v', $this->getAudioFormat()); // AudioFormat - $header .= pack('v', $this->getNumChannels()); // NumChannels - $header .= pack('V', $this->getSampleRate()); // SampleRate - $header .= pack('V', $this->getByteRate()); // ByteRate - $header .= pack('v', $this->getBlockAlign()); // BlockAlign - $header .= pack('v', $this->getBitsPerSample()); // BitsPerSample - if($this->getFmtExtendedSize() == 24) { - $header .= pack('v', 22); // extension size = 24 bytes, cbSize: 24 - 2 = 22 bytes - $header .= pack('v', $this->getValidBitsPerSample()); // ValidBitsPerSample - $header .= pack('V', $this->getChannelMask()); // ChannelMask - $header .= pack('H32', $this->getAudioSubFormat()); // SubFormat - } elseif ($this->getFmtExtendedSize() == 2) { - $header .= pack('v', 0); // extension size = 2 bytes, cbSize: 2 - 2 = 0 bytes - } - - // "fact" subchunk - if ($this->getFactChunkSize() == 4) { - $header .= pack('N', 0x66616374); // SubchunkID - "fact" - $header .= pack('V', 4); // SubchunkSize - $header .= pack('V', $this->getNumBlocks()); // SampleLength (per channel) - } - - return $header; - } - - /** - * Construct wav DATA chunk. - * - * @return string The DATA header and chunk. - */ - public function getDataSubchunk() - { - // check preconditions - if (!$this->_dataSize_valid) { - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - } - - - // create subchunk - return pack('N', 0x64617461) . // SubchunkID - "data" - pack('V', $this->getDataSize()) . // SubchunkSize - $this->_samples . // Subchunk data - ($this->getDataSize() & 1 ? chr(0) : ''); // padding byte - } - - /** - * Save the wav data to a file. - * - * @param string $filename (Required) The file path to save the wav to. - * @throws WavFileException - */ - public function save($filename) - { - $fp = @fopen($filename, 'w+b'); - if (!is_resource($fp)) { - throw new WavFileException('Failed to open "' . $filename . '" for writing.'); - } - - fwrite($fp, $this->makeHeader()); - fwrite($fp, $this->getDataSubchunk()); - fclose($fp); - - return $this; - } - - /** - * Reads a wav header and data from a file. - * - * @param string $filename (Required) The path to the wav file to read. - * @param bool $readData (Optional) If true, also read the data chunk. - * @throws WavFormatException - * @throws WavFileException - */ - public function openWav($filename, $readData = true) - { - // check preconditions - if (!file_exists($filename)) { - throw new WavFileException('Failed to open "' . $filename . '". File not found.'); - } elseif (!is_readable($filename)) { - throw new WavFileException('Failed to open "' . $filename . '". File is not readable.'); - } elseif (is_resource($this->_fp)) { - $this->closeWav(); - } - - - // open the file - $this->_fp = @fopen($filename, 'rb'); - if (!is_resource($this->_fp)) { - throw new WavFileException('Failed to open "' . $filename . '".'); - } - - // read the file - return $this->readWav($readData); - } - - /** - * Close a with openWav() previously opened wav file or free the buffer of setWavData(). - * Not necessary if the data has been read (readData = true) already. - */ - public function closeWav() { - if (is_resource($this->_fp)) fclose($this->_fp); - - return $this; - } - - /** - * Set the wav file data and properties from a wav file in a string. - * - * @param string $data (Required) The wav file data. Passed by reference. - * @param bool $free (Optional) True to free the passed $data after copying. - * @throws WavFormatException - * @throws WavFileException - */ - public function setWavData(&$data, $free = true) - { - // check preconditions - if (is_resource($this->_fp)) $this->closeWav(); - - - // open temporary stream in memory - $this->_fp = @fopen('php://memory', 'w+b'); - if (!is_resource($this->_fp)) { - throw new WavFileException('Failed to open memory stream to write wav data. Use openWav() instead.'); - } - - // prepare stream - fwrite($this->_fp, $data); - rewind($this->_fp); - - // free the passed data - if ($free) $data = null; - - // read the stream like a file - return $this->readWav(true); - } - - /** - * Read wav file from a stream. - * - * @param $readData (Optional) If true, also read the data chunk. - * @throws WavFormatException - * @throws WavFileException - */ - protected function readWav($readData = true) - { - if (!is_resource($this->_fp)) { - throw new WavFileException('No wav file open. Use openWav() first.'); - } - - try { - $this->readWavHeader(); - } catch (WavFileException $ex) { - $this->closeWav(); - throw $ex; - } - - if ($readData) return $this->readWavData(); - - return $this; - } - - /** - * Parse a wav header. - * http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/wave.html - * - * @throws WavFormatException - * @throws WavFileException - */ - protected function readWavHeader() - { - if (!is_resource($this->_fp)) { - throw new WavFileException('No wav file open. Use openWav() first.'); - } - - // get actual file size - $stat = fstat($this->_fp); - $actualSize = $stat['size']; - - $this->_actualSize = $actualSize; - - - // read the common header - $header = fread($this->_fp, 36); // minimum size of the wav header - if (strlen($header) < 36) { - throw new WavFormatException('Not wav format. Header too short.', 1); - } - - - // check "RIFF" header - $RIFF = unpack('NChunkID/VChunkSize/NFormat', $header); - - if ($RIFF['ChunkID'] != 0x52494646) { // "RIFF" - throw new WavFormatException('Not wav format. "RIFF" signature missing.', 2); - } - - if ($actualSize - 8 < $RIFF['ChunkSize']) { - trigger_error('"RIFF" chunk size does not match actual file size. Found ' . $RIFF['ChunkSize'] . ', expected ' . ($actualSize - 8) . '.', E_USER_NOTICE); - $RIFF['ChunkSize'] = $actualSize - 8; - //throw new WavFormatException('"RIFF" chunk size does not match actual file size. Found ' . $RIFF['ChunkSize'] . ', expected ' . ($actualSize - 8) . '.', 3); - } - - if ($RIFF['Format'] != 0x57415645) { // "WAVE" - throw new WavFormatException('Not wav format. "RIFF" chunk format is not "WAVE".', 4); - } - - $this->_chunkSize = $RIFF['ChunkSize']; - - - // check common "fmt " subchunk - $fmt = unpack('NSubchunkID/VSubchunkSize/vAudioFormat/vNumChannels/' - .'VSampleRate/VByteRate/vBlockAlign/vBitsPerSample', - substr($header, 12)); - - if ($fmt['SubchunkID'] != 0x666d7420) { // "fmt " - throw new WavFormatException('Bad wav header. Expected "fmt " subchunk.', 11); - } - - if ($fmt['SubchunkSize'] < 16) { - throw new WavFormatException('Bad "fmt " subchunk size.', 12); - } - - if ( $fmt['AudioFormat'] != self::WAVE_FORMAT_PCM - && $fmt['AudioFormat'] != self::WAVE_FORMAT_IEEE_FLOAT - && $fmt['AudioFormat'] != self::WAVE_FORMAT_EXTENSIBLE) - { - throw new WavFormatException('Unsupported audio format. Only PCM or IEEE FLOAT (EXTENSIBLE) audio is supported.', 13); - } - - if ($fmt['NumChannels'] < 1 || $fmt['NumChannels'] > self::MAX_CHANNEL) { - throw new WavFormatException('Invalid number of channels in "fmt " subchunk.', 14); - } - - if ($fmt['SampleRate'] < 1 || $fmt['SampleRate'] > self::MAX_SAMPLERATE) { - throw new WavFormatException('Invalid sample rate in "fmt " subchunk.', 15); - } - - if ( ($fmt['AudioFormat'] == self::WAVE_FORMAT_PCM && !in_array($fmt['BitsPerSample'], array(8, 16, 24))) - || ($fmt['AudioFormat'] == self::WAVE_FORMAT_IEEE_FLOAT && $fmt['BitsPerSample'] != 32) - || ($fmt['AudioFormat'] == self::WAVE_FORMAT_EXTENSIBLE && !in_array($fmt['BitsPerSample'], array(8, 16, 24, 32)))) - { - throw new WavFormatException('Only 8, 16 and 24-bit PCM and 32-bit IEEE FLOAT (EXTENSIBLE) audio is supported.', 16); - } - - $blockAlign = $fmt['NumChannels'] * $fmt['BitsPerSample'] / 8; - if ($blockAlign != $fmt['BlockAlign']) { - trigger_error('Invalid block align in "fmt " subchunk. Found ' . $fmt['BlockAlign'] . ', expected ' . $blockAlign . '.', E_USER_NOTICE); - $fmt['BlockAlign'] = $blockAlign; - //throw new WavFormatException('Invalid block align in "fmt " subchunk. Found ' . $fmt['BlockAlign'] . ', expected ' . $blockAlign . '.', 17); - } - - $byteRate = $fmt['SampleRate'] * $blockAlign; - if ($byteRate != $fmt['ByteRate']) { - trigger_error('Invalid average byte rate in "fmt " subchunk. Found ' . $fmt['ByteRate'] . ', expected ' . $byteRate . '.', E_USER_NOTICE); - $fmt['ByteRate'] = $byteRate; - //throw new WavFormatException('Invalid average byte rate in "fmt " subchunk. Found ' . $fmt['ByteRate'] . ', expected ' . $byteRate . '.', 18); - } - - $this->_fmtChunkSize = $fmt['SubchunkSize']; - $this->_audioFormat = $fmt['AudioFormat']; - $this->_numChannels = $fmt['NumChannels']; - $this->_sampleRate = $fmt['SampleRate']; - $this->_byteRate = $fmt['ByteRate']; - $this->_blockAlign = $fmt['BlockAlign']; - $this->_bitsPerSample = $fmt['BitsPerSample']; - - - // read extended "fmt " subchunk data - $extendedFmt = ''; - if ($fmt['SubchunkSize'] > 16) { - // possibly handle malformed subchunk without a padding byte - $extendedFmt = fread($this->_fp, $fmt['SubchunkSize'] - 16 + ($fmt['SubchunkSize'] & 1)); // also read padding byte - if (strlen($extendedFmt) < $fmt['SubchunkSize'] - 16) { - throw new WavFormatException('Not wav format. Header too short.', 1); - } - } - - - // check extended "fmt " for EXTENSIBLE Audio Format - if ($fmt['AudioFormat'] == self::WAVE_FORMAT_EXTENSIBLE) { - if (strlen($extendedFmt) < 24) { - throw new WavFormatException('Invalid EXTENSIBLE "fmt " subchunk size. Found ' . $fmt['SubchunkSize'] . ', expected at least 40.', 19); - } - - $extensibleFmt = unpack('vSize/vValidBitsPerSample/VChannelMask/H32SubFormat', substr($extendedFmt, 0, 24)); - - if ( $extensibleFmt['SubFormat'] != self::WAVE_SUBFORMAT_PCM - && $extensibleFmt['SubFormat'] != self::WAVE_SUBFORMAT_IEEE_FLOAT) - { - throw new WavFormatException('Unsupported audio format. Only PCM or IEEE FLOAT (EXTENSIBLE) audio is supported.', 13); - } - - if ( ($extensibleFmt['SubFormat'] == self::WAVE_SUBFORMAT_PCM && !in_array($fmt['BitsPerSample'], array(8, 16, 24))) - || ($extensibleFmt['SubFormat'] == self::WAVE_SUBFORMAT_IEEE_FLOAT && $fmt['BitsPerSample'] != 32)) - { - throw new WavFormatException('Only 8, 16 and 24-bit PCM and 32-bit IEEE FLOAT (EXTENSIBLE) audio is supported.', 16); - } - - if ($extensibleFmt['Size'] != 22) { - trigger_error('Invaid extension size in EXTENSIBLE "fmt " subchunk.', E_USER_NOTICE); - $extensibleFmt['Size'] = 22; - //throw new WavFormatException('Invaid extension size in EXTENSIBLE "fmt " subchunk.', 20); - } - - if ($extensibleFmt['ValidBitsPerSample'] != $fmt['BitsPerSample']) { - trigger_error('Invaid or unsupported valid bits per sample in EXTENSIBLE "fmt " subchunk.', E_USER_NOTICE); - $extensibleFmt['ValidBitsPerSample'] = $fmt['BitsPerSample']; - //throw new WavFormatException('Invaid or unsupported valid bits per sample in EXTENSIBLE "fmt " subchunk.', 21); - } - - if ($extensibleFmt['ChannelMask'] != 0) { - // count number of set bits - Hamming weight - $c = (int)$extensibleFmt['ChannelMask']; - $n = 0; - while ($c > 0) { - $n += $c & 1; - $c >>= 1; - } - if ($n != $fmt['NumChannels'] || (((int)$extensibleFmt['ChannelMask'] | self::SPEAKER_ALL) != self::SPEAKER_ALL)) { - trigger_error('Invalid channel mask in EXTENSIBLE "fmt " subchunk. The number of channels does not match the number of locations in the mask.', E_USER_NOTICE); - $extensibleFmt['ChannelMask'] = 0; - //throw new WavFormatException('Invalid channel mask in EXTENSIBLE "fmt " subchunk. The number of channels does not match the number of locations in the mask.', 22); - } - } - - $this->_fmtExtendedSize = strlen($extendedFmt); - $this->_validBitsPerSample = $extensibleFmt['ValidBitsPerSample']; - $this->_channelMask = $extensibleFmt['ChannelMask']; - $this->_audioSubFormat = $extensibleFmt['SubFormat']; - - } else { - $this->_fmtExtendedSize = strlen($extendedFmt); - $this->_validBitsPerSample = $fmt['BitsPerSample']; - $this->_channelMask = 0; - $this->_audioSubFormat = null; - } - - - // read additional subchunks until "data" subchunk is found - $factSubchunk = array(); - $dataSubchunk = array(); - - while (!feof($this->_fp)) { - $subchunkHeader = fread($this->_fp, 8); - if (strlen($subchunkHeader) < 8) { - throw new WavFormatException('Missing "data" subchunk.', 101); - } - - $subchunk = unpack('NSubchunkID/VSubchunkSize', $subchunkHeader); - - if ($subchunk['SubchunkID'] == 0x66616374) { // "fact" - // possibly handle malformed subchunk without a padding byte - $subchunkData = fread($this->_fp, $subchunk['SubchunkSize'] + ($subchunk['SubchunkSize'] & 1)); // also read padding byte - if (strlen($subchunkData) < 4) { - throw new WavFormatException('Invalid "fact" subchunk.', 102); - } - - $factParams = unpack('VSampleLength', substr($subchunkData, 0, 4)); - $factSubchunk = array_merge($subchunk, $factParams); - - } elseif ($subchunk['SubchunkID'] == 0x64617461) { // "data" - $dataSubchunk = $subchunk; - - break; - - } elseif ($subchunk['SubchunkID'] == 0x7761766C) { // "wavl" - throw new WavFormatException('Wave List Chunk ("wavl" subchunk) is not supported.', 106); - } else { - // skip all other (unknown) subchunks - // possibly handle malformed subchunk without a padding byte - if ( $subchunk['SubchunkSize'] < 0 - || fseek($this->_fp, $subchunk['SubchunkSize'] + ($subchunk['SubchunkSize'] & 1), SEEK_CUR) !== 0) { // also skip padding byte - throw new WavFormatException('Invalid subchunk (0x' . dechex($subchunk['SubchunkID']) . ') encountered.', 103); - } - } - } - - if (empty($dataSubchunk)) { - throw new WavFormatException('Missing "data" subchunk.', 101); - } - - - // check "data" subchunk - $dataOffset = ftell($this->_fp); - if ($dataSubchunk['SubchunkSize'] < 0 || $actualSize - $dataOffset < $dataSubchunk['SubchunkSize']) { - trigger_error('Invalid "data" subchunk size.', E_USER_NOTICE); - $dataSubchunk['SubchunkSize'] = $actualSize - $dataOffset; - //throw new WavFormatException('Invalid "data" subchunk size.', 104); - } - - $this->_dataOffset = $dataOffset; - $this->_dataSize = $dataSubchunk['SubchunkSize']; - $this->_dataSize_fp = $dataSubchunk['SubchunkSize']; - $this->_dataSize_valid = false; - $this->_samples = ''; - - - // check "fact" subchunk - $numBlocks = (int)($dataSubchunk['SubchunkSize'] / $fmt['BlockAlign']); - - if (empty($factSubchunk)) { // construct fake "fact" subchunk - $factSubchunk = array('SubchunkSize' => 0, 'SampleLength' => $numBlocks); - } - - if ($factSubchunk['SampleLength'] != $numBlocks) { - trigger_error('Invalid sample length in "fact" subchunk.', E_USER_NOTICE); - $factSubchunk['SampleLength'] = $numBlocks; - //throw new WavFormatException('Invalid sample length in "fact" subchunk.', 105); - } - - $this->_factChunkSize = $factSubchunk['SubchunkSize']; - $this->_numBlocks = $factSubchunk['SampleLength']; - - - return $this; - - } - - /** - * Read the wav data from the file into the buffer. - * - * @param $dataOffset (Optional) The byte offset to skip before starting to read. Must be a multiple of BlockAlign. - * @param $dataSize (Optional) The size of the data to read in bytes. Must be a multiple of BlockAlign. Defaults to all data. - * @throws WavFileException - */ - public function readWavData($dataOffset = 0, $dataSize = null) - { - // check preconditions - if (!is_resource($this->_fp)) { - throw new WavFileException('No wav file open. Use openWav() first.'); - } - - if ($dataOffset < 0 || $dataOffset % $this->getBlockAlign() > 0) { - throw new WavFileException('Invalid data offset. Has to be a multiple of BlockAlign.'); - } - - if (is_null($dataSize)) { - $dataSize = $this->_dataSize_fp - ($this->_dataSize_fp % $this->getBlockAlign()); // only read complete blocks - } elseif ($dataSize < 0 || $dataSize % $this->getBlockAlign() > 0) { - throw new WavFileException('Invalid data size to read. Has to be a multiple of BlockAlign.'); - } - - - // skip offset - if ($dataOffset > 0 && fseek($this->_fp, $dataOffset, SEEK_CUR) !== 0) { - throw new WavFileException('Seeking to data offset failed.'); - } - - // read data - $this->_samples .= fread($this->_fp, $dataSize); // allow appending - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - - // close file or memory stream - return $this->closeWav(); - } - - - /*%******************************************************************************************%*/ - // Sample manipulation methods - - /** - * Return a single sample block from the file. - * - * @param int $blockNum (Required) The sample block number. Zero based. - * @return string The binary sample block (all channels). Returns null if the sample block number was out of range. - */ - public function getSampleBlock($blockNum) - { - // check preconditions - if (!$this->_dataSize_valid) { - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - } - - $offset = $blockNum * $this->_blockAlign; - if ($offset + $this->_blockAlign > $this->_dataSize || $offset < 0) { - return null; - } - - - // read data - return substr($this->_samples, $offset, $this->_blockAlign); - } - - /** - * Set a single sample block.
- * Allows to append a sample block. - * - * @param string $sampleBlock (Required) The binary sample block (all channels). - * @param int $blockNum (Required) The sample block number. Zero based. - * @throws WavFileException - */ - public function setSampleBlock($sampleBlock, $blockNum) - { - // check preconditions - $blockAlign = $this->_blockAlign; - if (!isset($sampleBlock[$blockAlign - 1]) || isset($sampleBlock[$blockAlign])) { // faster than: if (strlen($sampleBlock) != $blockAlign) - throw new WavFileException('Incorrect sample block size. Got ' . strlen($sampleBlock) . ', expected ' . $blockAlign . '.'); - } - - if (!$this->_dataSize_valid) { - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - } - - $numBlocks = (int)($this->_dataSize / $blockAlign); - $offset = $blockNum * $blockAlign; - if ($blockNum > $numBlocks || $blockNum < 0) { // allow appending - throw new WavFileException('Sample block number is out of range.'); - } - - - // replace or append data - if ($blockNum == $numBlocks) { - // append - $this->_samples .= $sampleBlock; - $this->_dataSize += $blockAlign; - $this->_chunkSize += $blockAlign; - $this->_actualSize += $blockAlign; - $this->_numBlocks++; - } else { - // replace - for ($i = 0; $i < $blockAlign; ++$i) { - $this->_samples[$offset + $i] = $sampleBlock[$i]; - } - } - - return $this; - } - - /** - * Get a float sample value for a specific sample block and channel number. - * - * @param int $blockNum (Required) The sample block number to fetch. Zero based. - * @param int $channelNum (Required) The channel number within the sample block to fetch. First channel is 1. - * @return float The float sample value. Returns null if the sample block number was out of range. - * @throws WavFileException - */ - public function getSampleValue($blockNum, $channelNum) - { - // check preconditions - if ($channelNum < 1 || $channelNum > $this->_numChannels) { - throw new WavFileException('Channel number is out of range.'); - } - - if (!$this->_dataSize_valid) { - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - } - - $sampleBytes = $this->_bitsPerSample / 8; - $offset = $blockNum * $this->_blockAlign + ($channelNum - 1) * $sampleBytes; - if ($offset + $sampleBytes > $this->_dataSize || $offset < 0) { - return null; - } - - // read binary value - $sampleBinary = substr($this->_samples, $offset, $sampleBytes); - - // convert binary to value - switch ($this->_bitsPerSample) { - case 8: - // unsigned char - return (float)((ord($sampleBinary) - 0x80) / 0x80); - - case 16: - // signed short, little endian - $data = unpack('v', $sampleBinary); - $sample = $data[1]; - if ($sample >= 0x8000) { - $sample -= 0x10000; - } - return (float)($sample / 0x8000); - - case 24: - // 3 byte packed signed integer, little endian - $data = unpack('C3', $sampleBinary); - $sample = $data[1] | ($data[2] << 8) | ($data[3] << 16); - if ($sample >= 0x800000) { - $sample -= 0x1000000; - } - return (float)($sample / 0x800000); - - case 32: - // 32-bit float - $data = unpack('f', $sampleBinary); - return (float)$data[1]; - - default: - return null; - } - } - - /** - * Sets a float sample value for a specific sample block number and channel.
- * Converts float values to appropriate integer values and clips properly.
- * Allows to append samples (in order). - * - * @param float $sampleFloat (Required) The float sample value to set. Converts float values and clips if necessary. - * @param int $blockNum (Required) The sample block number to set or append. Zero based. - * @param int $channelNum (Required) The channel number within the sample block to set or append. First channel is 1. - * @throws WavFileException - */ - public function setSampleValue($sampleFloat, $blockNum, $channelNum) - { - // check preconditions - if ($channelNum < 1 || $channelNum > $this->_numChannels) { - throw new WavFileException('Channel number is out of range.'); - } - - if (!$this->_dataSize_valid) { - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - } - - $dataSize = $this->_dataSize; - $bitsPerSample = $this->_bitsPerSample; - $sampleBytes = $bitsPerSample / 8; - $offset = $blockNum * $this->_blockAlign + ($channelNum - 1) * $sampleBytes; - if (($offset + $sampleBytes > $dataSize && $offset != $dataSize) || $offset < 0) { // allow appending - throw new WavFileException('Sample block or channel number is out of range.'); - } - - - // convert to value, quantize and clip - if ($bitsPerSample == 32) { - $sample = $sampleFloat < -1.0 ? -1.0 : ($sampleFloat > 1.0 ? 1.0 : $sampleFloat); - } else { - $p = 1 << ($bitsPerSample - 1); // 2 to the power of _bitsPerSample divided by 2 - - // project and quantize (round) float to integer values - $sample = $sampleFloat < 0 ? (int)($sampleFloat * $p - 0.5) : (int)($sampleFloat * $p + 0.5); - - // clip if necessary to [-$p, $p - 1] - if ($sample < -$p) { - $sample = -$p; - } elseif ($sample > $p - 1) { - $sample = $p - 1; - } - } - - // convert to binary - switch ($bitsPerSample) { - case 8: - // unsigned char - $sampleBinary = chr($sample + 0x80); - break; - - case 16: - // signed short, little endian - if ($sample < 0) { - $sample += 0x10000; - } - $sampleBinary = pack('v', $sample); - break; - - case 24: - // 3 byte packed signed integer, little endian - if ($sample < 0) { - $sample += 0x1000000; - } - $sampleBinary = pack('C3', $sample & 0xff, ($sample >> 8) & 0xff, ($sample >> 16) & 0xff); - break; - - case 32: - // 32-bit float - $sampleBinary = pack('f', $sample); - break; - - default: - $sampleBinary = null; - $sampleBytes = 0; - break; - } - - // replace or append data - if ($offset == $dataSize) { - // append - $this->_samples .= $sampleBinary; - $this->_dataSize += $sampleBytes; - $this->_chunkSize += $sampleBytes; - $this->_actualSize += $sampleBytes; - $this->_numBlocks = (int)($this->_dataSize / $this->_blockAlign); - } else { - // replace - for ($i = 0; $i < $sampleBytes; ++$i) { - $this->_samples{$offset + $i} = $sampleBinary{$i}; - } - } - - return $this; - } - - - /*%******************************************************************************************%*/ - // Audio processing methods - - /** - * Run samples through audio processing filters. - * - * - * $wav->filter( - * array( - * WavFile::FILTER_MIX => array( // Filter for mixing 2 WavFile instances. - * 'wav' => $wav2, // (Required) The WavFile to mix into this WhavFile. If no optional arguments are given, can be passed without the array. - * 'loop' => true, // (Optional) Loop the selected portion (with warping to the beginning at the end). - * 'blockOffset' => 0, // (Optional) Block number to start mixing from. - * 'numBlocks' => null // (Optional) Number of blocks to mix in or to select for looping. Defaults to the end or all data for looping. - * ), - * WavFile::FILTER_NORMALIZE => 0.6, // (Required) Normalization of (mixed) audio samples - see threshold parameter for normalizeSample(). - * WavFile::FILTER_DEGRADE => 0.9 // (Required) Introduce random noise. The quality relative to the amplitude. 1 = no noise, 0 = max. noise. - * ), - * 0, // (Optional) The block number of this WavFile to start with. - * null // (Optional) The number of blocks to process. - * ); - * - * - * @param array $filters (Required) An array of 1 or more audio processing filters. - * @param int $blockOffset (Optional) The block number to start precessing from. - * @param int $numBlocks (Optional) The maximum number of blocks to process. - * @throws WavFileException - */ - public function filter($filters, $blockOffset = 0, $numBlocks = null) - { - // check preconditions - $totalBlocks = $this->getNumBlocks(); - $numChannels = $this->getNumChannels(); - if (is_null($numBlocks)) $numBlocks = $totalBlocks - $blockOffset; - - if (!is_array($filters) || empty($filters) || $blockOffset < 0 || $blockOffset > $totalBlocks || $numBlocks <= 0) { - // nothing to do - return $this; - } - - // check filtes - $filter_mix = false; - if (array_key_exists(self::FILTER_MIX, $filters)) { - if (!is_array($filters[self::FILTER_MIX])) { - // assume the 'wav' parameter - $filters[self::FILTER_MIX] = array('wav' => $filters[self::FILTER_MIX]); - } - - $mix_wav = @$filters[self::FILTER_MIX]['wav']; - if (!($mix_wav instanceof WavFile)) { - throw new WavFileException("WavFile to mix is missing or invalid."); - } elseif ($mix_wav->getSampleRate() != $this->getSampleRate()) { - throw new WavFileException("Sample rate of WavFile to mix does not match."); - } else if ($mix_wav->getNumChannels() != $this->getNumChannels()) { - throw new WavFileException("Number of channels of WavFile to mix does not match."); - } - - $mix_loop = @$filters[self::FILTER_MIX]['loop']; - if (is_null($mix_loop)) $mix_loop = false; - - $mix_blockOffset = @$filters[self::FILTER_MIX]['blockOffset']; - if (is_null($mix_blockOffset)) $mix_blockOffset = 0; - - $mix_totalBlocks = $mix_wav->getNumBlocks(); - $mix_numBlocks = @$filters[self::FILTER_MIX]['numBlocks']; - if (is_null($mix_numBlocks)) $mix_numBlocks = $mix_loop ? $mix_totalBlocks : $mix_totalBlocks - $mix_blockOffset; - $mix_maxBlock = min($mix_blockOffset + $mix_numBlocks, $mix_totalBlocks); - - $filter_mix = true; - } - - $filter_normalize = false; - if (array_key_exists(self::FILTER_NORMALIZE, $filters)) { - $normalize_threshold = @$filters[self::FILTER_NORMALIZE]; - - if (!is_null($normalize_threshold) && abs($normalize_threshold) != 1) $filter_normalize = true; - } - - $filter_degrade = false; - if (array_key_exists(self::FILTER_DEGRADE, $filters)) { - $degrade_quality = @$filters[self::FILTER_DEGRADE]; - if (is_null($degrade_quality)) $degrade_quality = 1; - - if ($degrade_quality >= 0 && $degrade_quality < 1) $filter_degrade = true; - } - - - // loop through all sample blocks - for ($block = 0; $block < $numBlocks; ++$block) { - // loop through all channels - for ($channel = 1; $channel <= $numChannels; ++$channel) { - // read current sample - $currentBlock = $blockOffset + $block; - $sampleFloat = $this->getSampleValue($currentBlock, $channel); - - - /************* MIX FILTER ***********************/ - if ($filter_mix) { - if ($mix_loop) { - $mixBlock = ($mix_blockOffset + ($block % $mix_numBlocks)) % $mix_totalBlocks; - } else { - $mixBlock = $mix_blockOffset + $block; - } - - if ($mixBlock < $mix_maxBlock) { - $sampleFloat += $mix_wav->getSampleValue($mixBlock, $channel); - } - } - - /************* NORMALIZE FILTER *******************/ - if ($filter_normalize) { - $sampleFloat = $this->normalizeSample($sampleFloat, $normalize_threshold); - } - - /************* DEGRADE FILTER *******************/ - if ($filter_degrade) { - $sampleFloat += rand(1000000 * ($degrade_quality - 1), 1000000 * (1 - $degrade_quality)) / 1000000; - } - - - // write current sample - $this->setSampleValue($sampleFloat, $currentBlock, $channel); - } - } - - return $this; - } - - /** - * Append a wav file to the current wav.
- * The wav files must have the same sample rate, number of bits per sample, and number of channels. - * - * @param WavFile $wav (Required) The wav file to append. - * @throws WavFileException - */ - public function appendWav(WavFile $wav) { - // basic checks - if ($wav->getSampleRate() != $this->getSampleRate()) { - throw new WavFileException("Sample rate for wav files do not match."); - } else if ($wav->getBitsPerSample() != $this->getBitsPerSample()) { - throw new WavFileException("Bits per sample for wav files do not match."); - } else if ($wav->getNumChannels() != $this->getNumChannels()) { - throw new WavFileException("Number of channels for wav files do not match."); - } - - $this->_samples .= $wav->_samples; - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - - return $this; - } - - /** - * Mix 2 wav files together.
- * Both wavs must have the same sample rate and same number of channels. - * - * @param WavFile $wav (Required) The WavFile to mix. - * @param float $normalizeThreshold (Optional) See normalizeSample for an explanation. - * @throws WavFileException - */ - public function mergeWav(WavFile $wav, $normalizeThreshold = null) { - return $this->filter(array( - WavFile::FILTER_MIX => $wav, - WavFile::FILTER_NORMALIZE => $normalizeThreshold - )); - } - - /** - * Add silence to the wav file. - * - * @param float $duration (Optional) How many seconds of silence. If negative, add to the beginning of the file. Defaults to 1s. - */ - public function insertSilence($duration = 1.0) - { - $numSamples = $this->getSampleRate() * abs($duration); - $numChannels = $this->getNumChannels(); - - $data = str_repeat(self::packSample($this->getZeroAmplitude(), $this->getBitsPerSample()), $numSamples * $numChannels); - if ($duration >= 0) { - $this->_samples .= $data; - } else { - $this->_samples = $data . $this->_samples; - } - - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - - return $this; - } - - /** - * Degrade the quality of the wav file by introducing random noise. - * - * @param float quality (Optional) The quality relative to the amplitude. 1 = no noise, 0 = max. noise. - */ - public function degrade($quality = 1.0) - { - return $this->filter(self::FILTER_DEGRADE, array( - WavFile::FILTER_DEGRADE => $quality - )); - } - - /** - * Generate noise at the end of the wav for the specified duration and volume. - * - * @param float $duration (Optional) Number of seconds of noise to generate. - * @param float $percent (Optional) The percentage of the maximum amplitude to use. 100 = full amplitude. - */ - public function generateNoise($duration = 1.0, $percent = 100) - { - $numChannels = $this->getNumChannels(); - $numSamples = $this->getSampleRate() * $duration; - $minAmp = $this->getMinAmplitude(); - $maxAmp = $this->getMaxAmplitude(); - $bitDepth = $this->getBitsPerSample(); - - for ($s = 0; $s < $numSamples; ++$s) { - if ($bitDepth == 32) { - $val = rand(-$percent * 10000, $percent * 10000) / 1000000; - } else { - $val = rand($minAmp, $maxAmp); - $val = (int)($val * $percent / 100); - } - - $this->_samples .= str_repeat(self::packSample($val, $bitDepth), $numChannels); - } - - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - - return $this; - } - - /** - * Convert sample data to different bits per sample. - * - * @param int $bitsPerSample (Required) The new number of bits per sample; - * @throws WavFileException - */ - public function convertBitsPerSample($bitsPerSample) { - if ($this->getBitsPerSample() == $bitsPerSample) { - return $this; - } - - $tempWav = new WavFile($this->getNumChannels(), $this->getSampleRate(), $bitsPerSample); - $tempWav->filter( - array(self::FILTER_MIX => $this), - 0, - $this->getNumBlocks() - ); - - $this->setSamples() // implicit setDataSize(), setSize(), setActualSize(), setNumBlocks() - ->setBitsPerSample($bitsPerSample); // implicit setValidBitsPerSample(), setAudioFormat(), setAudioSubFormat(), setFmtChunkSize(), setFactChunkSize(), setSize(), setActualSize(), setDataOffset(), setByteRate(), setBlockAlign(), setNumBlocks() - $this->_samples = $tempWav->_samples; - $this->setDataSize(); // implicit setSize(), setActualSize(), setNumBlocks() - - return $this; - } - - - /*%******************************************************************************************%*/ - // Miscellaneous methods - - /** - * Output information about the wav object. - */ - public function displayInfo() - { - $s = "File Size: %u\n" - ."Chunk Size: %u\n" - ."fmt Subchunk Size: %u\n" - ."Extended fmt Size: %u\n" - ."fact Subchunk Size: %u\n" - ."Data Offset: %u\n" - ."Data Size: %u\n" - ."Audio Format: %s\n" - ."Audio SubFormat: %s\n" - ."Channels: %u\n" - ."Channel Mask: 0x%s\n" - ."Sample Rate: %u\n" - ."Bits Per Sample: %u\n" - ."Valid Bits Per Sample: %u\n" - ."Sample Block Size: %u\n" - ."Number of Sample Blocks: %u\n" - ."Byte Rate: %uBps\n"; - - $s = sprintf($s, $this->getActualSize(), - $this->getChunkSize(), - $this->getFmtChunkSize(), - $this->getFmtExtendedSize(), - $this->getFactChunkSize(), - $this->getDataOffset(), - $this->getDataSize(), - $this->getAudioFormat() == self::WAVE_FORMAT_PCM ? 'PCM' : ($this->getAudioFormat() == self::WAVE_FORMAT_IEEE_FLOAT ? 'IEEE FLOAT' : 'EXTENSIBLE'), - $this->getAudioSubFormat() == self::WAVE_SUBFORMAT_PCM ? 'PCM' : 'IEEE FLOAT', - $this->getNumChannels(), - dechex($this->getChannelMask()), - $this->getSampleRate(), - $this->getBitsPerSample(), - $this->getValidBitsPerSample(), - $this->getBlockAlign(), - $this->getNumBlocks(), - $this->getByteRate()); - - if (php_sapi_name() == 'cli') { - return $s; - } else { - return nl2br($s); - } - } -} - - -/*%******************************************************************************************%*/ -// Exceptions - -/** - * WavFileException indicates an illegal state or argument in this class. - */ -class WavFileException extends Exception {} - -/** - * WavFormatException indicates a malformed or unsupported wav file header. - */ -class WavFormatException extends WavFileException {} diff --git a/captcha/audio/0.wav b/captcha/audio/0.wav deleted file mode 100644 index 7cd0b37..0000000 Binary files a/captcha/audio/0.wav and /dev/null differ diff --git a/captcha/audio/1.wav b/captcha/audio/1.wav deleted file mode 100644 index b589080..0000000 Binary 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- CAPTCHA Image - - - -   - Reload Image
- Enter Code*:
- -

- \ No newline at end of file diff --git a/captcha/database/.htaccess b/captcha/database/.htaccess deleted file mode 100644 index 8d2f256..0000000 --- a/captcha/database/.htaccess +++ /dev/null @@ -1 +0,0 @@ -deny from all diff --git a/captcha/database/index.html b/captcha/database/index.html deleted file mode 100644 index 8d1c8b6..0000000 --- a/captcha/database/index.html +++ /dev/null @@ -1 +0,0 @@ - diff --git a/captcha/database/securimage.sqlite b/captcha/database/securimage.sqlite deleted file mode 100644 index 783f48e..0000000 Binary files a/captcha/database/securimage.sqlite and /dev/null differ diff --git a/captcha/example_form.ajax.php b/captcha/example_form.ajax.php deleted file mode 100644 index 31cc1f8..0000000 --- a/captcha/example_form.ajax.php +++ /dev/null @@ -1,214 +0,0 @@ - - - - - - Securimage Example Form - - - - - - - - -
-Example Form - -

- This is an example PHP form that processes user information, checks for errors, and validates the captcha code.
- This example form also demonstrates how to submit a form to itself to display error messages. -

- - - -
- - -

- Name*:
- -

- -

- Email*:
- -

- -

- URL:
- -

- -

- Message*:
- -

- -

- CAPTCHA Image - - - -   - Reload Image
- Enter Code*:
- -

- -

-
- -

- -
-
- - - - - $value) { - if (!is_array($key)) { - // sanitize the input data - if ($key != 'ct_message') $value = strip_tags($value); - $_POST[$key] = htmlspecialchars(stripslashes(trim($value))); - } - } - - $name = @$_POST['ct_name']; // name from the form - $email = @$_POST['ct_email']; // email from the form - $URL = @$_POST['ct_URL']; // url from the form - $message = @$_POST['ct_message']; // the message from the form - $captcha = @$_POST['ct_captcha']; // the user's entry for the captcha code - $name = substr($name, 0, 64); // limit name to 64 characters - - $errors = array(); // initialize empty error array - - if (isset($GLOBALS['DEBUG_MODE']) && $GLOBALS['DEBUG_MODE'] == false) { - // only check for errors if the form is not in debug mode - - if (strlen($name) < 3) { - // name too short, add error - $errors['name_error'] = 'Your name is required'; - } - - if (strlen($email) == 0) { - // no email address given - $errors['email_error'] = 'Email address is required'; - } else if ( !preg_match('/^(?:[\w\d]+\.?)+@(?:(?:[\w\d]\-?)+\.)+\w{2,4}$/i', $email)) { - // invalid email format - $errors['email_error'] = 'Email address entered is invalid'; - } - - if (strlen($message) < 20) { - // message length too short - $errors['message_error'] = 'Please enter a message'; - } - } - - // Only try to validate the captcha if the form has no errors - // This is especially important for ajax calls - if (sizeof($errors) == 0) { - require_once dirname(__FILE__) . '/securimage.php'; - $securimage = new Securimage(); - - if ($securimage->check($captcha) == false) { - $errors['captcha_error'] = 'Incorrect security code entered'; - } - } - - if (sizeof($errors) == 0) { - // no errors, send the form - $time = date('r'); - $message = "A message was submitted from the contact form. The following information was provided.

" - . "Name: $name
" - . "Email: $email
" - . "URL: $URL
" - . "Message:
" - . "
$message
" - . "

IP Address: {$_SERVER['REMOTE_ADDR']}
" - . "Time: $time
" - . "Browser: {$_SERVER['HTTP_USER_AGENT']}
"; - - if (isset($GLOBALS['DEBUG_MODE']) && $GLOBALS['DEBUG_MODE'] == false) { - // send the message with mail() - mail($GLOBALS['ct_recipient'], $GLOBALS['ct_msg_subject'], $message, "From: {$GLOBALS['ct_recipient']}\r\nReply-To: {$email}\r\nContent-type: text/html; charset=ISO-8859-1\r\nMIME-Version: 1.0"); - } - - $return = array('error' => 0, 'message' => 'OK'); - die(json_encode($return)); - } else { - $errmsg = ''; - foreach($errors as $key => $error) { - // set up error messages to display with each field - $errmsg .= " - {$error}\n"; - } - - $return = array('error' => 1, 'message' => $errmsg); - die(json_encode($return)); - } - } // POST -} // function process_si_contact_form() diff --git a/captcha/example_form.php b/captcha/example_form.php deleted file mode 100644 index 10ba189..0000000 --- a/captcha/example_form.php +++ /dev/null @@ -1,192 +0,0 @@ - - - - - - Securimage Example Form - - - - -
-Example Form - -

- This is an example PHP form that processes user information, checks for errors, and validates the captcha code.
- This example form also demonstrates how to submit a form to itself to display error messages. -

- - -There was a problem with your submission. Errors are displayed below in red.

- -The captcha was correct and the message has been sent!

- - -
- - -

- Name*:   
- -

- -

- Email*:   
- -

- -

- URL:   
- -

- -

- Message*:   
- -

- -

- CAPTCHA Image - - - -   - Reload Image
- Enter Code*:
- - -

- -

-
- -

- -
-
- - - - - $value) { - if (!is_array($key)) { - // sanitize the input data - if ($key != 'ct_message') $value = strip_tags($value); - $_POST[$key] = htmlspecialchars(stripslashes(trim($value))); - } - } - - $name = @$_POST['ct_name']; // name from the form - $email = @$_POST['ct_email']; // email from the form - $URL = @$_POST['ct_URL']; // url from the form - $message = @$_POST['ct_message']; // the message from the form - $captcha = @$_POST['ct_captcha']; // the user's entry for the captcha code - $name = substr($name, 0, 64); // limit name to 64 characters - - $errors = array(); // initialize empty error array - - if (isset($GLOBALS['DEBUG_MODE']) && $GLOBALS['DEBUG_MODE'] == false) { - // only check for errors if the form is not in debug mode - - if (strlen($name) < 3) { - // name too short, add error - $errors['name_error'] = 'Your name is required'; - } - - if (strlen($email) == 0) { - // no email address given - $errors['email_error'] = 'Email address is required'; - } else if ( !preg_match('/^(?:[\w\d]+\.?)+@(?:(?:[\w\d]\-?)+\.)+\w{2,4}$/i', $email)) { - // invalid email format - $errors['email_error'] = 'Email address entered is invalid'; - } - - if (strlen($message) < 20) { - // message length too short - $errors['message_error'] = 'Please enter a message'; - } - } - - // Only try to validate the captcha if the form has no errors - // This is especially important for ajax calls - if (sizeof($errors) == 0) { - require_once dirname(__FILE__) . '/securimage.php'; - $securimage = new Securimage(); - - if ($securimage->check($captcha) == false) { - $errors['captcha_error'] = 'Incorrect security code entered
'; - } - } - - if (sizeof($errors) == 0) { - // no errors, send the form - $time = date('r'); - $message = "A message was submitted from the contact form. The following information was provided.

" - . "Name: $name
" - . "Email: $email
" - . "URL: $URL
" - . "Message:
" - . "
$message
" - . "

IP Address: {$_SERVER['REMOTE_ADDR']}
" - . "Time: $time
" - . "Browser: {$_SERVER['HTTP_USER_AGENT']}
"; - - $message = wordwrap($message, 70); - - if (isset($GLOBALS['DEBUG_MODE']) && $GLOBALS['DEBUG_MODE'] == false) { - // send the message with mail() - mail($GLOBALS['ct_recipient'], $GLOBALS['ct_msg_subject'], $message, "From: {$GLOBALS['ct_recipient']}\r\nReply-To: {$email}\r\nContent-type: text/html; charset=ISO-8859-1\r\nMIME-Version: 1.0"); - } - - $_SESSION['ctform']['error'] = false; // no error with form - $_SESSION['ctform']['success'] = true; // message sent - } else { - // save the entries, this is to re-populate the form - $_SESSION['ctform']['ct_name'] = $name; // save name from the form submission - $_SESSION['ctform']['ct_email'] = $email; // save email - $_SESSION['ctform']['ct_URL'] = $URL; // save URL - $_SESSION['ctform']['ct_message'] = $message; // save message - - foreach($errors as $key => $error) { - // set up error messages to display with each field - $_SESSION['ctform'][$key] = "$error"; - } - - $_SESSION['ctform']['error'] = true; // set error floag - } - } // POST -} - -$_SESSION['ctform']['success'] = false; // clear success value after running diff --git a/captcha/images/audio_icon.png b/captcha/images/audio_icon.png deleted file mode 100644 index 9922ef1..0000000 Binary files a/captcha/images/audio_icon.png and /dev/null differ diff --git a/captcha/images/refresh.png b/captcha/images/refresh.png deleted file mode 100644 index f5e7d82..0000000 Binary files a/captcha/images/refresh.png and /dev/null differ diff --git a/captcha/index.php b/captcha/index.php deleted file mode 100644 index 090bbd5..0000000 --- a/captcha/index.php +++ /dev/null @@ -1 +0,0 @@ - diff --git a/captcha/securimage.php b/captcha/securimage.php deleted file mode 100644 index 459a512..0000000 --- a/captcha/securimage.php +++ /dev/null @@ -1,1857 +0,0 @@ - - * File: securimage.php
- * - * Copyright (c) 2012, Drew Phillips - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - * Any modifications to the library should be indicated clearly in the source code - * to inform users that the changes are not a part of the original software.

- * - * If you found this script useful, please take a quick moment to rate it.
- * http://www.hotscripts.com/rate/49400.html Thanks. - * - * @link http://www.phpcaptcha.org Securimage PHP CAPTCHA - * @link http://www.phpcaptcha.org/latest.zip Download Latest Version - * @link http://www.phpcaptcha.org/Securimage_Docs/ Online Documentation - * @copyright 2012 Drew Phillips - * @author Drew Phillips - * @version 3.2RC3 (May 2012) - * @package Securimage - * - */ - -/** - ChangeLog - - 3.2RC3 - - Fix canSendHeaders() check which was breaking if a PHP startup error was issued - - 3.2RC2 - - Add error handler (https://github.com/dapphp/securimage/issues/15) - - Fix flash examples to use the correct value name for audio parameter - - 3.2RC1 - - New audio captcha code. Faster, fully dynamic audio, full WAV support - (Paul Voegler, Drew Phillips) - - New Flash audio streaming button. User defined image and size supported - - Additional options for customizing captcha (noise_level, send_headers, - no_exit, no_session, display_value - - Add captcha ID support. Uses sqlite and unique captcha IDs to track captchas, - no session used - - Add static methods for creating and validating captcha by ID - - Automatic clearing of old codes from SQLite database - - 3.0.3Beta - - Add improved mixing function to WavFile class (Paul Voegler) - - Improve performance and security of captcha audio (Paul Voegler, Drew Phillips) - - Add option to use random file as background noise in captcha audio - - Add new securimage options for audio files - - 3.0.2Beta - - Fix issue with session variables when upgrading from 2.0 - 3.0 - - Improve audio captcha, switch to use WavFile class, make mathematical captcha audio work - - 3.0.1 - - Bugfix: removed use of deprecated variable in addSignature method that would cause errors with display_errors on - - 3.0 - - Rewrite class using PHP5 OOP - - Remove support for GD fonts, require FreeType - - Remove support for multi-color codes - - Add option to make codes case-sensitive - - Add namespaces to support multiple captchas on a single page or page specific captchas - - Add option to show simple math problems instead of codes - - Remove support for mp3 files due to vulnerability in decoding mp3 audio files - - Create new flash file to stream wav files instead of mp3 - - Changed to BSD license - - 2.0.2 - - Fix pathing to make integration into libraries easier (Nathan Phillip Brink ohnobinki@ohnopublishing.net) - - 2.0.1 - - Add support for browsers with cookies disabled (requires php5, sqlite) maps users to md5 hashed ip addresses and md5 hashed codes for security - - Add fallback to gd fonts if ttf support is not enabled or font file not found (Mike Challis http://www.642weather.com/weather/scripts.php) - - Check for previous definition of image type constants (Mike Challis) - - Fix mime type settings for audio output - - Fixed color allocation issues with multiple colors and background images, consolidate allocation to one function - - Ability to let codes expire after a given length of time - - Allow HTML color codes to be passed to Securimage_Color (suggested by Mike Challis) - - 2.0.0 - - Add mathematical distortion to characters (using code from HKCaptcha) - - Improved session support - - Added Securimage_Color class for easier color definitions - - Add distortion to audio output to prevent binary comparison attack (proposed by Sven "SavageTiger" Hagemann [insecurity.nl]) - - Flash button to stream mp3 audio (Douglas Walsh www.douglaswalsh.net) - - Audio output is mp3 format by default - - Change font to AlteHaasGrotesk by yann le coroller - - Some code cleanup - - 1.0.4 (unreleased) - - Ability to output audible codes in mp3 format to stream from flash - - 1.0.3.1 - - Error reading from wordlist in some cases caused words to be cut off 1 letter short - - 1.0.3 - - Removed shadow_text from code which could cause an undefined property error due to removal from previous version - - 1.0.2 - - Audible CAPTCHA Code wav files - - Create codes from a word list instead of random strings - - 1.0 - - Added the ability to use a selected character set, rather than a-z0-9 only. - - Added the multi-color text option to use different colors for each letter. - - Switched to automatic session handling instead of using files for code storage - - Added GD Font support if ttf support is not available. Can use internal GD fonts or load new ones. - - Added the ability to set line thickness - - Added option for drawing arced lines over letters - - Added ability to choose image type for output - - */ - - -/** - * Securimage CAPTCHA Class. - * - * @version 3.0 - * @package Securimage - * @subpackage classes - * @author Drew Phillips - * - */ -class Securimage -{ - // All of the public variables below are securimage options - // They can be passed as an array to the Securimage constructor, set below, - // or set from securimage_show.php and securimage_play.php - - /** - * Renders captcha as a JPEG image - * @var int - */ - const SI_IMAGE_JPEG = 1; - /** - * Renders captcha as a PNG image (default) - * @var int - */ - const SI_IMAGE_PNG = 2; - /** - * Renders captcha as a GIF image - * @var int - */ - const SI_IMAGE_GIF = 3; - - /** - * Create a normal alphanumeric captcha - * @var int - */ - const SI_CAPTCHA_STRING = 0; - /** - * Create a captcha consisting of a simple math problem - * @var int - */ - const SI_CAPTCHA_MATHEMATIC = 1; - - /** - * The width of the captcha image - * @var int - */ - public $image_width = 215; - /** - * The height of the captcha image - * @var int - */ - public $image_height = 80; - /** - * The type of the image, default = png - * @var int - */ - public $image_type = self::SI_IMAGE_PNG; - - /** - * The background color of the captcha - * @var Securimage_Color - */ - public $image_bg_color = '#ffffff'; - /** - * The color of the captcha text - * @var Securimage_Color - */ - public $text_color = '#707070'; - /** - * The color of the lines over the captcha - * @var Securimage_Color - */ - public $line_color = '#707070'; - /** - * The color of the noise that is drawn - * @var Securimage_Color - */ - public $noise_color = '#707070'; - - /** - * How transparent to make the text 0 = completely opaque, 100 = invisible - * @var int - */ - public $text_transparency_percentage = 50; - /** - * Whether or not to draw the text transparently, true = use transparency, false = no transparency - * @var bool - */ - public $use_transparent_text = false; - - /** - * The length of the captcha code - * @var int - */ - public $code_length = 6; - /** - * Whether the captcha should be case sensitive (not recommended, use only for maximum protection) - * @var bool - */ - public $case_sensitive = false; - /** - * The character set to use for generating the captcha code - * @var string - */ - public $charset = 'ABCDEFGHKLMNPRSTUVWYZabcdefghklmnprstuvwyz23456789'; - /** - * How long in seconds a captcha remains valid, after this time it will not be accepted - * @var unknown_type - */ - public $expiry_time = 900; - - /** - * The session name securimage should use, only set this if your application uses a custom session name - * It is recommended to set this value below so it is used by all securimage scripts - * @var string - */ - public $session_name = null; - - /** - * true to use the wordlist file, false to generate random captcha codes - * @var bool - */ - public $use_wordlist = false; - - /** - * The level of distortion, 0.75 = normal, 1.0 = very high distortion - * @var double - */ - public $perturbation = 0.75; - /** - * How many lines to draw over the captcha code to increase security - * @var int - */ - public $num_lines = 8; - /** - * The level of noise (random dots) to place on the image, 0-10 - * @var int - */ - public $noise_level = 0; - - /** - * The signature text to draw on the bottom corner of the image - * @var string - */ - public $image_signature = ''; - /** - * The color of the signature text - * @var Securimage_Color - */ - public $signature_color = '#707070'; - /** - * The path to the ttf font file to use for the signature text, defaults to $ttf_file (AHGBold.ttf) - * @var string - */ - public $signature_font; - - /** - * Use an SQLite database to store data (for users that do not support cookies) - * @var bool - */ - public $use_sqlite_db = false; - - /** - * The type of captcha to create, either alphanumeric, or a math problem
- * Securimage::SI_CAPTCHA_STRING or Securimage::SI_CAPTCHA_MATHEMATIC - * @var int - */ - public $captcha_type = self::SI_CAPTCHA_STRING; // or self::SI_CAPTCHA_MATHEMATIC; - - /** - * The captcha namespace, use this if you have multiple forms on a single page, blank if you do not use multiple forms on one page - * @var string - * - * namespace = 'contact_form'; - * - * // in form validator - * $img->namespace = 'contact_form'; - * if ($img->check($code) == true) { - * echo "Valid!"; - * } - * - */ - public $namespace; - - /** - * The font file to use to draw the captcha code, leave blank for default font AHGBold.ttf - * @var string - */ - public $ttf_file; - /** - * The path to the wordlist file to use, leave blank for default words/words.txt - * @var string - */ - public $wordlist_file; - /** - * The directory to scan for background images, if set a random background will be chosen from this folder - * @var string - */ - public $background_directory; - /** - * The path to the SQLite database file to use, if $use_sqlite_database = true, should be chmod 666 - * @var string - */ - public $sqlite_database; - /** - * The path to the securimage audio directory, can be set in securimage_play.php - * @var string - * - * $img->audio_path = '/home/yoursite/public_html/securimage/audio/'; - * - */ - public $audio_path; - /** - * The path to the directory containing audio files that will be selected - * randomly and mixed with the captcha audio. - * - * @var string - */ - public $audio_noise_path; - /** - * Whether or not to mix background noise files into captcha audio (true = mix, false = no) - * Mixing random background audio with noise can help improve security of audio captcha. - * Default: securimage/audio/noise - * - * @since 3.0.3 - * @see Securimage::$audio_noise_path - * @var bool - */ - public $audio_use_noise; - /** - * The method and threshold (or gain factor) used to normalize the mixing with background noise. - * See http://www.voegler.eu/pub/audio/ for more information. - * - * Valid:
    - *
  • >= 1 - Normalize by multiplying by the threshold (boost - positive gain).
    - * A value of 1 in effect means no normalization (and results in clipping).
    • - *
  • <= -1 - Normalize by dividing by the the absolute value of threshold (attenuate - negative gain).
    - * A factor of 2 (-2) is about 6dB reduction in volume.
    • - *
  • [0, 1) - (open inverval - not including 1) - The threshold - * above which amplitudes are comressed logarithmically.
    - * e.g. 0.6 to leave amplitudes up to 60% "as is" and compress above.
    • - *
  • (-1, 0) - (open inverval - not including -1 and 0) - The threshold - * above which amplitudes are comressed linearly.
    - * e.g. -0.6 to leave amplitudes up to 60% "as is" and compress above.
- * - * Default: 0.6 - * - * @since 3.0.4 - * @var float - */ - public $audio_mix_normalization = 0.6; - /** - * Whether or not to degrade audio by introducing random noise (improves security of audio captcha) - * Default: true - * - * @since 3.0.3 - * @var bool - */ - public $degrade_audio; - /** - * Minimum delay to insert between captcha audio letters in milliseconds - * - * @since 3.0.3 - * @var float - */ - public $audio_gap_min = 0; - /** - * Maximum delay to insert between captcha audio letters in milliseconds - * - * @since 3.0.3 - * @var float - */ - public $audio_gap_max = 600; - - /** - * Captcha ID if using static captcha - * @var string Unique captcha id - */ - protected static $_captchaId = null; - - protected $im; - protected $tmpimg; - protected $bgimg; - protected $iscale = 5; - - protected $securimage_path = null; - - /** - * The captcha challenge value (either the case-sensitive/insensitive word captcha, or the solution to the math captcha) - * - * @var string Captcha challenge value - */ - protected $code; - - /** - * The display value of the captcha to draw on the image (the word captcha, or the math equation to present to the user) - * - * @var string Captcha display value to draw on the image - */ - protected $code_display; - - /** - * A value that can be passed to the constructor that can be used to generate a captcha image with a given value - * This value does not get stored in the session or database and is only used when calling Securimage::show(). - * If a display_value was passed to the constructor and the captcha image is generated, the display_value will be used - * as the string to draw on the captcha image. Used only if captcha codes are generated and managed by a 3rd party app/library - * - * @var string Captcha code value to display on the image - */ - protected $display_value; - - /** - * Captcha code supplied by user [set from Securimage::check()] - * - * @var string - */ - protected $captcha_code; - - /** - * Flag that can be specified telling securimage not to call exit after generating a captcha image or audio file - * - * @var bool If true, script will not terminate; if false script will terminate (default) - */ - protected $no_exit; - - /** - * Flag indicating whether or not a PHP session should be started and used - * - * @var bool If true, no session will be started; if false, session will be started and used to store data (default) - */ - protected $no_session; - - /** - * Flag indicating whether or not HTTP headers will be sent when outputting captcha image/audio - * - * @var bool If true (default) headers will be sent, if false, no headers are sent - */ - protected $send_headers; - - // sqlite database handle (if using sqlite) - protected $sqlite_handle; - - // gd color resources that are allocated for drawing the image - protected $gdbgcolor; - protected $gdtextcolor; - protected $gdlinecolor; - protected $gdsignaturecolor; - - /** - * Create a new securimage object, pass options to set in the constructor.
- * This can be used to display a captcha, play an audible captcha, or validate an entry - * @param array $options - * - * $options = array( - * 'text_color' => new Securimage_Color('#013020'), - * 'code_length' => 5, - * 'num_lines' => 5, - * 'noise_level' => 3, - * 'font_file' => Securimage::getPath() . '/custom.ttf' - * ); - * - * $img = new Securimage($options); - * - */ - public function __construct($options = array()) - { - $this->securimage_path = dirname(__FILE__); - - if (is_array($options) && sizeof($options) > 0) { - foreach($options as $prop => $val) { - if ($prop == 'captchaId') { - Securimage::$_captchaId = $val; - $this->use_sqlite_db = true; - } else { - $this->$prop = $val; - } - } - } - - $this->image_bg_color = $this->initColor($this->image_bg_color, '#ffffff'); - $this->text_color = $this->initColor($this->text_color, '#616161'); - $this->line_color = $this->initColor($this->line_color, '#616161'); - $this->noise_color = $this->initColor($this->noise_color, '#616161'); - $this->signature_color = $this->initColor($this->signature_color, '#616161'); - - if (is_null($this->ttf_file)) { - $this->ttf_file = $this->securimage_path . '/AHGBold.ttf'; - } - - $this->signature_font = $this->ttf_file; - - if (is_null($this->wordlist_file)) { - $this->wordlist_file = $this->securimage_path . '/words/words.txt'; - } - - if (is_null($this->sqlite_database)) { - $this->sqlite_database = $this->securimage_path . '/database/securimage.sqlite'; - } - - if (is_null($this->audio_path)) { - $this->audio_path = $this->securimage_path . '/audio/'; - } - - if (is_null($this->audio_noise_path)) { - $this->audio_noise_path = $this->audio_path . '/noise/'; - } - - if (is_null($this->audio_use_noise)) { - $this->audio_use_noise = true; - } - - if (is_null($this->degrade_audio)) { - $this->degrade_audio = true; - } - - if (is_null($this->code_length) || (int)$this->code_length < 1) { - $this->code_length = 6; - } - - if (is_null($this->perturbation) || !is_numeric($this->perturbation)) { - $this->perturbation = 0.75; - } - - if (is_null($this->namespace) || !is_string($this->namespace)) { - $this->namespace = 'default'; - } - - if (is_null($this->no_exit)) { - $this->no_exit = false; - } - - if (is_null($this->no_session)) { - $this->no_session = false; - } - - if (is_null($this->send_headers)) { - $this->send_headers = true; - } - - if ($this->no_session != true) { - // Initialize session or attach to existing - if ( session_id() == '' ) { // no session has been started yet, which is needed for validation - if (!is_null($this->session_name) && trim($this->session_name) != '') { - session_name(trim($this->session_name)); // set session name if provided - } - session_start(); - } - } - } - - /** - * Return the absolute path to the Securimage directory - * @return string The path to the securimage base directory - */ - public static function getPath() - { - return dirname(__FILE__); - } - - /** - * Generate a new captcha ID or retrieve the current ID - * - * @param $new bool If true, generates a new challenge and returns and ID - * @param $options array Additional options to be passed to Securimage - * - * @return null|string Returns null if no captcha id set and new was false, or string captcha ID - */ - public static function getCaptchaId($new = true, array $options = array()) - { - if ((bool)$new == true) { - $id = sha1(uniqid($_SERVER['REMOTE_ADDR'], true)); - $opts = array('no_session' => true, - 'use_sqlite_db' => true); - if (sizeof($options) > 0) $opts = array_merge($opts, $options); - $si = new self($opts); - Securimage::$_captchaId = $id; - $si->createCode(); - - return $id; - } else { - return Securimage::$_captchaId; - } - } - - /** - * Validate a captcha code input against a captcha ID - * @param string $id The captcha ID to check - * @param string $value The captcha value supplied by the user - * - * @return bool true if the code was valid for the given captcha ID, false if not or if database failed to open - */ - public static function checkByCaptchaId($id, $value) - { - $si = new self(array('captchaId' => $id, - 'no_session' => true, - 'use_sqlite_db' => true)); - - if ($si->openDatabase()) { - $code = $si->getCodeFromDatabase(); - - if (is_array($code)) { - $si->code = $code['code']; - $si->code_display = $code['code_disp']; - } - - if ($si->check($value)) { - return true; - } else { - return false; - } - } else { - return false; - } - } - - - /** - * Used to serve a captcha image to the browser - * @param string $background_image The path to the background image to use - * - * $img = new Securimage(); - * $img->code_length = 6; - * $img->num_lines = 5; - * $img->noise_level = 5; - * - * $img->show(); // sends the image to browser - * exit; - * - */ - public function show($background_image = '') - { - set_error_handler(array(&$this, 'errorHandler')); - - if($background_image != '' && is_readable($background_image)) { - $this->bgimg = $background_image; - } - - $this->doImage(); - } - - /** - * Check a submitted code against the stored value - * @param string $code The captcha code to check - * - * $code = $_POST['code']; - * $img = new Securimage(); - * if ($img->check($code) == true) { - * $captcha_valid = true; - * } else { - * $captcha_valid = false; - * } - * - */ - public function check($code) - { - $this->code_entered = $code; - $this->validate(); - return $this->correct_code; - } - - /** - * Output a wav file of the captcha code to the browser - * - * - * $img = new Securimage(); - * $img->outputAudioFile(); // outputs a wav file to the browser - * exit; - * - */ - public function outputAudioFile() - { - set_error_handler(array(&$this, 'errorHandler')); - - require_once dirname(__FILE__) . '/WavFile.php'; - - try { - $audio = $this->getAudibleCode(); - } catch (Exception $ex) { - if (($fp = @fopen(dirname(__FILE__) . '/si.error_log', 'a+')) !== false) { - fwrite($fp, date('Y-m-d H:i:s') . ': Securimage audio error "' . $ex->getMessage() . '"' . "\n"); - fclose($fp); - } - - $audio = $this->audioError(); - } - - if ($this->canSendHeaders() || $this->send_headers == false) { - if ($this->send_headers) { - $uniq = md5(uniqid(microtime())); - header("Content-Disposition: attachment; filename=\"securimage_audio-{$uniq}.wav\""); - header('Cache-Control: no-store, no-cache, must-revalidate'); - header('Expires: Sun, 1 Jan 2000 12:00:00 GMT'); - header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . 'GMT'); - header('Content-type: audio/x-wav'); - - if (extension_loaded('zlib')) { - ini_set('zlib.output_compression', true); // compress output if supported by browser - } else { - header('Content-Length: ' . strlen($audio)); - } - } - - echo $audio; - } else { - echo '
' - .'Failed to generate audio file, content has already been ' - .'output.
This is most likely due to misconfiguration or ' - .'a PHP error was sent to the browser.'; - } - - restore_error_handler(); - - if (!$this->no_exit) exit; - } - - /** - * Return the code from the session or sqlite database if used. If none exists yet, an empty string is returned - * - * @param $array bool True to receive an array containing the code and properties - * @return array|string Array if $array = true, otherwise a string containing the code - */ - public function getCode($array = false) - { - $code = ''; - $time = 0; - $disp = 'error'; - - if ($this->no_session != true) { - if (isset($_SESSION['securimage_code_value'][$this->namespace]) && - trim($_SESSION['securimage_code_value'][$this->namespace]) != '') { - if ($this->isCodeExpired( - $_SESSION['securimage_code_ctime'][$this->namespace]) == false) { - $code = $_SESSION['securimage_code_value'][$this->namespace]; - $time = $_SESSION['securimage_code_ctime'][$this->namespace]; - $disp = $_SESSION['securimage_code_disp'] [$this->namespace]; - } - } - } - - if ($this->use_sqlite_db == true && function_exists('sqlite_open')) { - // no code in session - may mean user has cookies turned off - $this->openDatabase(); - $code = $this->getCodeFromDatabase(); - } else { /* no code stored in session or sqlite database, validation will fail */ } - - if ($array == true) { - return array('code' => $code, 'ctime' => $time, 'display' => $disp); - } else { - return $code; - } - } - - /** - * The main image drawing routing, responsible for constructing the entire image and serving it - */ - protected function doImage() - { - if( ($this->use_transparent_text == true || $this->bgimg != '') && function_exists('imagecreatetruecolor')) { - $imagecreate = 'imagecreatetruecolor'; - } else { - $imagecreate = 'imagecreate'; - } - - $this->im = $imagecreate($this->image_width, $this->image_height); - $this->tmpimg = $imagecreate($this->image_width * $this->iscale, $this->image_height * $this->iscale); - - $this->allocateColors(); - imagepalettecopy($this->tmpimg, $this->im); - - $this->setBackground(); - - $code = ''; - - if ($this->getCaptchaId(false) !== null) { - // a captcha Id was supplied - - // check to see if a display_value for the captcha image was set - if (is_string($this->display_value) && strlen($this->display_value) > 0) { - $this->code_display = $this->display_value; - $this->code = ($this->case_sensitive) ? - $this->display_value : - strtolower($this->display_value); - $code = $this->code; - } else if ($this->openDatabase()) { - // no display_value, check the database for existing captchaId - $code = $this->getCodeFromDatabase(); - - // got back a result from the database with a valid code for captchaId - if (is_array($code)) { - $this->code = $code['code']; - $this->code_display = $code['code_disp']; - $code = $code['code']; - } - } - } - - if ($code == '') { - // if the code was not set using display_value or was not found in - // the database, create a new code - $this->createCode(); - } - - if ($this->noise_level > 0) { - $this->drawNoise(); - } - - $this->drawWord(); - - if ($this->perturbation > 0 && is_readable($this->ttf_file)) { - $this->distortedCopy(); - } - - if ($this->num_lines > 0) { - $this->drawLines(); - } - - if (trim($this->image_signature) != '') { - $this->addSignature(); - } - - $this->output(); - } - - /** - * Allocate the colors to be used for the image - */ - protected function allocateColors() - { - // allocate bg color first for imagecreate - $this->gdbgcolor = imagecolorallocate($this->im, - $this->image_bg_color->r, - $this->image_bg_color->g, - $this->image_bg_color->b); - - $alpha = intval($this->text_transparency_percentage / 100 * 127); - - if ($this->use_transparent_text == true) { - $this->gdtextcolor = imagecolorallocatealpha($this->im, - $this->text_color->r, - $this->text_color->g, - $this->text_color->b, - $alpha); - $this->gdlinecolor = imagecolorallocatealpha($this->im, - $this->line_color->r, - $this->line_color->g, - $this->line_color->b, - $alpha); - $this->gdnoisecolor = imagecolorallocatealpha($this->im, - $this->noise_color->r, - $this->noise_color->g, - $this->noise_color->b, - $alpha); - } else { - $this->gdtextcolor = imagecolorallocate($this->im, - $this->text_color->r, - $this->text_color->g, - $this->text_color->b); - $this->gdlinecolor = imagecolorallocate($this->im, - $this->line_color->r, - $this->line_color->g, - $this->line_color->b); - $this->gdnoisecolor = imagecolorallocate($this->im, - $this->noise_color->r, - $this->noise_color->g, - $this->noise_color->b); - } - - $this->gdsignaturecolor = imagecolorallocate($this->im, - $this->signature_color->r, - $this->signature_color->g, - $this->signature_color->b); - - } - - /** - * The the background color, or background image to be used - */ - protected function setBackground() - { - // set background color of image by drawing a rectangle since imagecreatetruecolor doesn't set a bg color - imagefilledrectangle($this->im, 0, 0, - $this->image_width, $this->image_height, - $this->gdbgcolor); - imagefilledrectangle($this->tmpimg, 0, 0, - $this->image_width * $this->iscale, $this->image_height * $this->iscale, - $this->gdbgcolor); - - if ($this->bgimg == '') { - if ($this->background_directory != null && - is_dir($this->background_directory) && - is_readable($this->background_directory)) - { - $img = $this->getBackgroundFromDirectory(); - if ($img != false) { - $this->bgimg = $img; - } - } - } - - if ($this->bgimg == '') { - return; - } - - $dat = @getimagesize($this->bgimg); - if($dat == false) { - return; - } - - switch($dat[2]) { - case 1: $newim = @imagecreatefromgif($this->bgimg); break; - case 2: $newim = @imagecreatefromjpeg($this->bgimg); break; - case 3: $newim = @imagecreatefrompng($this->bgimg); break; - default: return; - } - - if(!$newim) return; - - imagecopyresized($this->im, $newim, 0, 0, 0, 0, - $this->image_width, $this->image_height, - imagesx($newim), imagesy($newim)); - } - - /** - * Scan the directory for a background image to use - */ - protected function getBackgroundFromDirectory() - { - $images = array(); - - if ( ($dh = opendir($this->background_directory)) !== false) { - while (($file = readdir($dh)) !== false) { - if (preg_match('/(jpg|gif|png)$/i', $file)) $images[] = $file; - } - - closedir($dh); - - if (sizeof($images) > 0) { - return rtrim($this->background_directory, '/') . '/' . $images[rand(0, sizeof($images)-1)]; - } - } - - return false; - } - - /** - * Generates the code or math problem and saves the value to the session - */ - protected function createCode() - { - $this->code = false; - - switch($this->captcha_type) { - case self::SI_CAPTCHA_MATHEMATIC: - { - do { - $signs = array('+', '-', 'x'); - $left = rand(1, 10); - $right = rand(1, 5); - $sign = $signs[rand(0, 2)]; - - switch($sign) { - case 'x': $c = $left * $right; break; - case '-': $c = $left - $right; break; - default: $c = $left + $right; break; - } - } while ($c <= 0); // no negative #'s or 0 - - $this->code = $c; - $this->code_display = "$left $sign $right"; - break; - } - - default: - { - if ($this->use_wordlist && is_readable($this->wordlist_file)) { - $this->code = $this->readCodeFromFile(); - } - - if ($this->code == false) { - $this->code = $this->generateCode($this->code_length); - } - - $this->code_display = $this->code; - $this->code = ($this->case_sensitive) ? $this->code : strtolower($this->code); - } // default - } - - $this->saveData(); - } - - /** - * Draws the captcha code on the image - */ - protected function drawWord() - { - $width2 = $this->image_width * $this->iscale; - $height2 = $this->image_height * $this->iscale; - - if (!is_readable($this->ttf_file)) { - imagestring($this->im, 4, 10, ($this->image_height / 2) - 5, 'Failed to load TTF font file!', $this->gdtextcolor); - } else { - if ($this->perturbation > 0) { - $font_size = $height2 * .4; - $bb = imageftbbox($font_size, 0, $this->ttf_file, $this->code_display); - $tx = $bb[4] - $bb[0]; - $ty = $bb[5] - $bb[1]; - $x = floor($width2 / 2 - $tx / 2 - $bb[0]); - $y = round($height2 / 2 - $ty / 2 - $bb[1]); - - imagettftext($this->tmpimg, $font_size, 0, $x, $y, $this->gdtextcolor, $this->ttf_file, $this->code_display); - } else { - $font_size = $this->image_height * .4; - $bb = imageftbbox($font_size, 0, $this->ttf_file, $this->code_display); - $tx = $bb[4] - $bb[0]; - $ty = $bb[5] - $bb[1]; - $x = floor($this->image_width / 2 - $tx / 2 - $bb[0]); - $y = round($this->image_height / 2 - $ty / 2 - $bb[1]); - - imagettftext($this->im, $font_size, 0, $x, $y, $this->gdtextcolor, $this->ttf_file, $this->code_display); - } - } - - // DEBUG - //$this->im = $this->tmpimg; - //$this->output(); - - } - - /** - * Copies the captcha image to the final image with distortion applied - */ - protected function distortedCopy() - { - $numpoles = 3; // distortion factor - // make array of poles AKA attractor points - for ($i = 0; $i < $numpoles; ++ $i) { - $px[$i] = rand($this->image_width * 0.2, $this->image_width * 0.8); - $py[$i] = rand($this->image_height * 0.2, $this->image_height * 0.8); - $rad[$i] = rand($this->image_height * 0.2, $this->image_height * 0.8); - $tmp = ((- $this->frand()) * 0.15) - .15; - $amp[$i] = $this->perturbation * $tmp; - } - - $bgCol = imagecolorat($this->tmpimg, 0, 0); - $width2 = $this->iscale * $this->image_width; - $height2 = $this->iscale * $this->image_height; - imagepalettecopy($this->im, $this->tmpimg); // copy palette to final image so text colors come across - // loop over $img pixels, take pixels from $tmpimg with distortion field - for ($ix = 0; $ix < $this->image_width; ++ $ix) { - for ($iy = 0; $iy < $this->image_height; ++ $iy) { - $x = $ix; - $y = $iy; - for ($i = 0; $i < $numpoles; ++ $i) { - $dx = $ix - $px[$i]; - $dy = $iy - $py[$i]; - if ($dx == 0 && $dy == 0) { - continue; - } - $r = sqrt($dx * $dx + $dy * $dy); - if ($r > $rad[$i]) { - continue; - } - $rscale = $amp[$i] * sin(3.14 * $r / $rad[$i]); - $x += $dx * $rscale; - $y += $dy * $rscale; - } - $c = $bgCol; - $x *= $this->iscale; - $y *= $this->iscale; - if ($x >= 0 && $x < $width2 && $y >= 0 && $y < $height2) { - $c = imagecolorat($this->tmpimg, $x, $y); - } - if ($c != $bgCol) { // only copy pixels of letters to preserve any background image - imagesetpixel($this->im, $ix, $iy, $c); - } - } - } - } - - /** - * Draws distorted lines on the image - */ - protected function drawLines() - { - for ($line = 0; $line < $this->num_lines; ++ $line) { - $x = $this->image_width * (1 + $line) / ($this->num_lines + 1); - $x += (0.5 - $this->frand()) * $this->image_width / $this->num_lines; - $y = rand($this->image_height * 0.1, $this->image_height * 0.9); - - $theta = ($this->frand() - 0.5) * M_PI * 0.7; - $w = $this->image_width; - $len = rand($w * 0.4, $w * 0.7); - $lwid = rand(0, 2); - - $k = $this->frand() * 0.6 + 0.2; - $k = $k * $k * 0.5; - $phi = $this->frand() * 6.28; - $step = 0.5; - $dx = $step * cos($theta); - $dy = $step * sin($theta); - $n = $len / $step; - $amp = 1.5 * $this->frand() / ($k + 5.0 / $len); - $x0 = $x - 0.5 * $len * cos($theta); - $y0 = $y - 0.5 * $len * sin($theta); - - $ldx = round(- $dy * $lwid); - $ldy = round($dx * $lwid); - - for ($i = 0; $i < $n; ++ $i) { - $x = $x0 + $i * $dx + $amp * $dy * sin($k * $i * $step + $phi); - $y = $y0 + $i * $dy - $amp * $dx * sin($k * $i * $step + $phi); - imagefilledrectangle($this->im, $x, $y, $x + $lwid, $y + $lwid, $this->gdlinecolor); - } - } - } - - /** - * Draws random noise on the image - */ - protected function drawNoise() - { - if ($this->noise_level > 10) { - $noise_level = 10; - } else { - $noise_level = $this->noise_level; - } - - $t0 = microtime(true); - - $noise_level *= 125; // an arbitrary number that works well on a 1-10 scale - - $points = $this->image_width * $this->image_height * $this->iscale; - $height = $this->image_height * $this->iscale; - $width = $this->image_width * $this->iscale; - for ($i = 0; $i < $noise_level; ++$i) { - $x = rand(10, $width); - $y = rand(10, $height); - $size = rand(7, 10); - if ($x - $size <= 0 && $y - $size <= 0) continue; // dont cover 0,0 since it is used by imagedistortedcopy - imagefilledarc($this->tmpimg, $x, $y, $size, $size, 0, 360, $this->gdnoisecolor, IMG_ARC_PIE); - } - - $t1 = microtime(true); - - $t = $t1 - $t0; - - /* - // DEBUG - imagestring($this->tmpimg, 5, 25, 30, "$t", $this->gdnoisecolor); - header('content-type: image/png'); - imagepng($this->tmpimg); - exit; - */ - } - - /** - * Print signature text on image - */ - protected function addSignature() - { - $bbox = imagettfbbox(10, 0, $this->signature_font, $this->image_signature); - $textlen = $bbox[2] - $bbox[0]; - $x = $this->image_width - $textlen - 5; - $y = $this->image_height - 3; - - imagettftext($this->im, 10, 0, $x, $y, $this->gdsignaturecolor, $this->signature_font, $this->image_signature); - } - - /** - * Sends the appropriate image and cache headers and outputs image to the browser - */ - protected function output() - { - if ($this->canSendHeaders() || $this->send_headers == false) { - if ($this->send_headers) { - // only send the content-type headers if no headers have been output - // this will ease debugging on misconfigured servers where warnings - // may have been output which break the image and prevent easily viewing - // source to see the error. - header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); - header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT"); - header("Cache-Control: no-store, no-cache, must-revalidate"); - header("Cache-Control: post-check=0, pre-check=0", false); - header("Pragma: no-cache"); - } - - switch ($this->image_type) { - case self::SI_IMAGE_JPEG: - if ($this->send_headers) header("Content-Type: image/jpeg"); - imagejpeg($this->im, null, 90); - break; - case self::SI_IMAGE_GIF: - if ($this->send_headers) header("Content-Type: image/gif"); - imagegif($this->im); - break; - default: - if ($this->send_headers) header("Content-Type: image/png"); - imagepng($this->im); - break; - } - } else { - echo '
' - .'Failed to generate captcha image, content has already been ' - .'output.
This is most likely due to misconfiguration or ' - .'a PHP error was sent to the browser.'; - } - - imagedestroy($this->im); - restore_error_handler(); - - if (!$this->no_exit) exit; - } - - /** - * Gets the code and returns the binary audio file for the stored captcha code - * - * @return The audio representation of the captcha in Wav format - */ - protected function getAudibleCode() - { - $letters = array(); - $code = $this->getCode(true); - - if ($code['code'] == '') { - $this->createCode(); - $code = $this->getCode(true); - } - - if (preg_match('/(\d+) (\+|-|x) (\d+)/i', $code['display'], $eq)) { - $math = true; - - $left = $eq[1]; - $sign = str_replace(array('+', '-', 'x'), array('plus', 'minus', 'times'), $eq[2]); - $right = $eq[3]; - - $letters = array($left, $sign, $right); - } else { - $math = false; - - $length = strlen($code['display']); - - for($i = 0; $i < $length; ++$i) { - $letter = $code['display']{$i}; - $letters[] = $letter; - } - } - - try { - return $this->generateWAV($letters); - } catch(Exception $ex) { - throw $ex; - } - } - - /** - * Gets a captcha code from a wordlist - */ - protected function readCodeFromFile() - { - $fp = @fopen($this->wordlist_file, 'rb'); - if (!$fp) return false; - - $fsize = filesize($this->wordlist_file); - if ($fsize < 128) return false; // too small of a list to be effective - - fseek($fp, rand(0, $fsize - 64), SEEK_SET); // seek to a random position of file from 0 to filesize-64 - $data = fread($fp, 64); // read a chunk from our random position - fclose($fp); - $data = preg_replace("/\r?\n/", "\n", $data); - - $start = @strpos($data, "\n", rand(0, 56)) + 1; // random start position - $end = @strpos($data, "\n", $start); // find end of word - - if ($start === false) { - return false; - } else if ($end === false) { - $end = strlen($data); - } - - return strtolower(substr($data, $start, $end - $start)); // return a line of the file - } - - /** - * Generates a random captcha code from the set character set - */ - protected function generateCode() - { - $code = ''; - - for($i = 1, $cslen = strlen($this->charset); $i <= $this->code_length; ++$i) { - $code .= $this->charset{rand(0, $cslen - 1)}; - } - - //return 'testing'; // debug, set the code to given string - - return $code; - } - - /** - * Checks the entered code against the value stored in the session or sqlite database, handles case sensitivity - * Also clears the stored codes if the code was entered correctly to prevent re-use - */ - protected function validate() - { - if (!is_string($this->code) || strlen($this->code) == 0) { - $code = $this->getCode(); - // returns stored code, or an empty string if no stored code was found - // checks the session and sqlite database if enabled - } else { - $code = $this->code; - } - - if ($this->case_sensitive == false && preg_match('/[A-Z]/', $code)) { - // case sensitive was set from securimage_show.php but not in class - // the code saved in the session has capitals so set case sensitive to true - $this->case_sensitive = true; - } - - $code_entered = trim( (($this->case_sensitive) ? $this->code_entered - : strtolower($this->code_entered)) - ); - $this->correct_code = false; - - if ($code != '') { - if ($code == $code_entered) { - $this->correct_code = true; - if ($this->no_session != true) { - $_SESSION['securimage_code_value'][$this->namespace] = ''; - $_SESSION['securimage_code_ctime'][$this->namespace] = ''; - } - $this->clearCodeFromDatabase(); - } - } - } - - /** - * Save data to session namespace and database if used - */ - protected function saveData() - { - if ($this->no_session != true) { - if (isset($_SESSION['securimage_code_value']) && is_scalar($_SESSION['securimage_code_value'])) { - // fix for migration from v2 - v3 - unset($_SESSION['securimage_code_value']); - unset($_SESSION['securimage_code_ctime']); - } - - $_SESSION['securimage_code_disp'] [$this->namespace] = $this->code_display; - $_SESSION['securimage_code_value'][$this->namespace] = $this->code; - $_SESSION['securimage_code_ctime'][$this->namespace] = time(); - } - - $this->saveCodeToDatabase(); - } - - /** - * Saves the code to the sqlite database - */ - protected function saveCodeToDatabase() - { - $success = false; - - $this->openDatabase(); - - if ($this->use_sqlite_db && $this->sqlite_handle !== false) { - $id = $this->getCaptchaId(false); - $ip = $_SERVER['REMOTE_ADDR']; - - if (empty($id)) { - $id = $ip; - } - - $time = time(); - $code = $this->code; - $code_disp = $this->code_display; - - $query = "INSERT OR REPLACE INTO codes(id, ip, code, code_display," - ."namespace, created) VALUES('$id', '$ip', '$code', " - ."'$code_disp', '{$this->namespace}', $time)"; - - $success = sqlite_query($this->sqlite_handle, $query); - } - - return $success !== false; - } - - /** - * Open sqlite database - */ - protected function openDatabase() - { - $this->sqlite_handle = false; - - if ($this->use_sqlite_db == true && !function_exists('sqlite_open')) { - trigger_error('Securimage use_sqlite_db option is enable, but SQLIte is not supported by this PHP installation', E_USER_WARNING); - } - - if ($this->use_sqlite_db && function_exists('sqlite_open')) { - if (!file_exists($this->sqlite_database)) { - $fp = fopen($this->sqlite_database, 'w+'); - if (!$fp) { - trigger_error('Securimage failed to open sqlite database "' . $this->sqlite_database, E_USER_WARNING); - return false; - } - fclose($fp); - chmod($this->sqlite_database, 0666); - } - - $this->sqlite_handle = sqlite_open($this->sqlite_database, 0666, $error); - - if ($this->sqlite_handle !== false) { - $res = sqlite_query($this->sqlite_handle, "PRAGMA table_info(codes)"); - - if (sqlite_num_rows($res) == 0) { - $res = sqlite_query( - $this->sqlite_handle, - "CREATE TABLE codes (id VARCHAR(40) PRIMARY KEY, ip VARCHAR(32), - code VARCHAR(32) NOT NULL, code_display VARCHAR(32) NOT NULL, - namespace VARCHAR(32) NOT NULL, created INTEGER)" - ); - } - - if (mt_rand(0, 100) / 100.0 == 1.0) { - // randomly purge old codes - $this->purgeOldCodesFromDatabase(); - } - } - - return $this->sqlite_handle != false; - } - - return $this->sqlite_handle; - } - - /** - * Get a code from the sqlite database for ip address/captchaId. - * - * @return string|array Empty string if no code was found or has expired, - * otherwise returns the stored captcha code. If a captchaId is set, this - * returns an array with indices "code" and "code_disp" - */ - protected function getCodeFromDatabase() - { - $code = ''; - - if ($this->use_sqlite_db && $this->sqlite_handle !== false) { - if (Securimage::$_captchaId !== null) { - $query = "SELECT * FROM codes WHERE id = '" . sqlite_escape_string(Securimage::$_captchaId) . "'"; - } else { - $ip = $_SERVER['REMOTE_ADDR']; - $ns = sqlite_escape_string($this->namespace); - $query = "SELECT * FROM codes WHERE ip = '$ip' AND namespace = '$ns'"; - } - - $res = sqlite_query($this->sqlite_handle, $query); - if ($res && sqlite_num_rows($res) > 0) { - $res = sqlite_fetch_array($res); - - if ($this->isCodeExpired($res['created']) == false) { - if (Securimage::$_captchaId !== null) { - // return an array when using captchaId - $code = array('code' => $res['code'], - 'code_disp' => $res['code_display']); - } else { - // return only the code if no captchaId specified - $code = $res['code']; - } - } - } - } - return $code; - } - - /** - * Remove an entered code from the database - */ - protected function clearCodeFromDatabase() - { - if (is_resource($this->sqlite_handle)) { - $ip = $_SERVER['REMOTE_ADDR']; - $ns = sqlite_escape_string($this->namespace); - - sqlite_query($this->sqlite_handle, "DELETE FROM codes WHERE ip = '$ip' AND namespace = '$ns'"); - } - } - - /** - * Deletes old codes from sqlite database - */ - protected function purgeOldCodesFromDatabase() - { - if ($this->use_sqlite_db && $this->sqlite_handle !== false) { - $now = time(); - $limit = (!is_numeric($this->expiry_time) || $this->expiry_time < 1) ? 86400 : $this->expiry_time; - - sqlite_query($this->sqlite_handle, "DELETE FROM codes WHERE $now - created > $limit"); - } - } - - /** - * Checks to see if the captcha code has expired and cannot be used - * @param unknown_type $creation_time - */ - protected function isCodeExpired($creation_time) - { - $expired = true; - - if (!is_numeric($this->expiry_time) || $this->expiry_time < 1) { - $expired = false; - } else if (time() - $creation_time < $this->expiry_time) { - $expired = false; - } - - return $expired; - } - - /** - * Generate a wav file given the $letters in the code - * @todo Add ability to merge 2 sound files together to have random background sounds - * @param array $letters - * @return string The binary contents of the wav file - */ - protected function generateWAV($letters) - { - $wavCaptcha = new WavFile(); - $first = true; // reading first wav file - - foreach ($letters as $letter) { - $letter = strtoupper($letter); - - try { - $l = new WavFile($this->audio_path . '/' . $letter . '.wav'); - - if ($first) { - // set sample rate, bits/sample, and # of channels for file based on first letter - $wavCaptcha->setSampleRate($l->getSampleRate()) - ->setBitsPerSample($l->getBitsPerSample()) - ->setNumChannels($l->getNumChannels()); - $first = false; - } - - // append letter to the captcha audio - $wavCaptcha->appendWav($l); - - // random length of silence between $audio_gap_min and $audio_gap_max - if ($this->audio_gap_max > 0 && $this->audio_gap_max > $this->audio_gap_min) { - $wavCaptcha->insertSilence( mt_rand($this->audio_gap_min, $this->audio_gap_max) / 1000.0 ); - } - } catch (Exception $ex) { - // failed to open file, or the wav file is broken or not supported - // 2 wav files were not compatible, different # channels, bits/sample, or sample rate - throw $ex; - } - } - - /********* Set up audio filters *****************************/ - $filters = array(); - - if ($this->audio_use_noise == true) { - // use background audio - find random file - $noiseFile = $this->getRandomNoiseFile(); - - if ($noiseFile !== false && is_readable($noiseFile)) { - try { - $wavNoise = new WavFile($noiseFile, false); - } catch(Exception $ex) { - throw $ex; - } - - // start at a random offset from the beginning of the wavfile - // in order to add more randomness - $randOffset = 0; - if ($wavNoise->getNumBlocks() > 2 * $wavCaptcha->getNumBlocks()) { - $randBlock = rand(0, $wavNoise->getNumBlocks() - $wavCaptcha->getNumBlocks()); - $wavNoise->readWavData($randBlock * $wavNoise->getBlockAlign(), $wavCaptcha->getNumBlocks() * $wavNoise->getBlockAlign()); - } else { - $wavNoise->readWavData(); - $randOffset = rand(0, $wavNoise->getNumBlocks() - 1); - } - - - $mixOpts = array('wav' => $wavNoise, - 'loop' => true, - 'blockOffset' => $randOffset); - - $filters[WavFile::FILTER_MIX] = $mixOpts; - $filters[WavFile::FILTER_NORMALIZE] = $this->audio_mix_normalization; - } - } - - if ($this->degrade_audio == true) { - // add random noise. - // any noise level below 95% is intensely distorted and not pleasant to the ear - $filters[WavFile::FILTER_DEGRADE] = rand(95, 98) / 100.0; - } - - if (!empty($filters)) { - $wavCaptcha->filter($filters); // apply filters to captcha audio - } - - return $wavCaptcha->__toString(); - } - - public function getRandomNoiseFile() - { - $return = false; - - if ( ($dh = opendir($this->audio_noise_path)) !== false ) { - $list = array(); - - while ( ($file = readdir($dh)) !== false ) { - if ($file == '.' || $file == '..') continue; - if (strtolower(substr($file, -4)) != '.wav') continue; - - $list[] = $file; - } - - closedir($dh); - - if (sizeof($list) > 0) { - $file = $list[array_rand($list, 1)]; - $return = $this->audio_noise_path . DIRECTORY_SEPARATOR . $file; - } - } - - return $return; - } - - /** - * Return a wav file saying there was an error generating file - * - * @return string The binary audio contents - */ - protected function audioError() - { - return @file_get_contents(dirname(__FILE__) . '/audio/error.wav'); - } - - /** - * Checks to see if headers can be sent and if any error has been output to the browser - * - * @return bool true if headers haven't been sent and no output/errors will break audio/images, false if unsafe - */ - protected function canSendHeaders() - { - if (headers_sent()) { - // output has been flushed and headers have already been sent - return false; - } else if (strlen((string)ob_get_contents()) > 0) { - // headers haven't been sent, but there is data in the buffer that will break image and audio data - return false; - } - - return true; - } - - /** - * Return a random float between 0 and 0.9999 - * - * @return float Random float between 0 and 0.9999 - */ - function frand() - { - return 0.0001 * rand(0,9999); - } - - /** - * Convert an html color code to a Securimage_Color - * @param string $color - * @param Securimage_Color $default The defalt color to use if $color is invalid - */ - protected function initColor($color, $default) - { - if ($color == null) { - return new Securimage_Color($default); - } else if (is_string($color)) { - try { - return new Securimage_Color($color); - } catch(Exception $e) { - return new Securimage_Color($default); - } - } else if (is_array($color) && sizeof($color) == 3) { - return new Securimage_Color($color[0], $color[1], $color[2]); - } else { - return new Securimage_Color($default); - } - } - - /** - * Error handler used when outputting captcha image or audio. - * This error handler helps determine if any errors raised would - * prevent captcha image or audio from displaying. If they have - * no effect on the output buffer or headers, true is returned so - * the script can continue processing. - * See https://github.com/dapphp/securimage/issues/15 - * - * @param int $errno - * @param string $errstr - * @param string $errfile - * @param int $errline - * @param array $errcontext - * @return boolean true if handled, false if PHP should handle - */ - public function errorHandler($errno, $errstr, $errfile = '', $errline = 0, $errcontext = array()) - { - // get the current error reporting level - $level = error_reporting(); - - // if error was supressed or $errno not set in current error level - if ($level == 0 || ($level & $errno) == 0) { - return true; - } - - return false; - } -} - - -/** - * Color object for Securimage CAPTCHA - * - * @version 3.0 - * @since 2.0 - * @package Securimage - * @subpackage classes - * - */ -class Securimage_Color -{ - public $r; - public $g; - public $b; - - /** - * Create a new Securimage_Color object.
- * Constructor expects 1 or 3 arguments.
- * When passing a single argument, specify the color using HTML hex format,
- * when passing 3 arguments, specify each RGB component (from 0-255) individually.
- * $color = new Securimage_Color('#0080FF') or
- * $color = new Securimage_Color(0, 128, 255) - * - * @param string $color - * @throws Exception - */ - public function __construct($color = '#ffffff') - { - $args = func_get_args(); - - if (sizeof($args) == 0) { - $this->r = 255; - $this->g = 255; - $this->b = 255; - } else if (sizeof($args) == 1) { - // set based on html code - if (substr($color, 0, 1) == '#') { - $color = substr($color, 1); - } - - if (strlen($color) != 3 && strlen($color) != 6) { - throw new InvalidArgumentException( - 'Invalid HTML color code passed to Securimage_Color' - ); - } - - $this->constructHTML($color); - } else if (sizeof($args) == 3) { - $this->constructRGB($args[0], $args[1], $args[2]); - } else { - throw new InvalidArgumentException( - 'Securimage_Color constructor expects 0, 1 or 3 arguments; ' . sizeof($args) . ' given' - ); - } - } - - /** - * Construct from an rgb triplet - * @param int $red The red component, 0-255 - * @param int $green The green component, 0-255 - * @param int $blue The blue component, 0-255 - */ - protected function constructRGB($red, $green, $blue) - { - if ($red < 0) $red = 0; - if ($red > 255) $red = 255; - if ($green < 0) $green = 0; - if ($green > 255) $green = 255; - if ($blue < 0) $blue = 0; - if ($blue > 255) $blue = 255; - - $this->r = $red; - $this->g = $green; - $this->b = $blue; - } - - /** - * Construct from an html hex color code - * @param string $color - */ - protected function constructHTML($color) - { - if (strlen($color) == 3) { - $red = str_repeat(substr($color, 0, 1), 2); - $green = str_repeat(substr($color, 1, 1), 2); - $blue = str_repeat(substr($color, 2, 1), 2); - } else { - $red = substr($color, 0, 2); - $green = substr($color, 2, 2); - $blue = substr($color, 4, 2); - } - - $this->r = hexdec($red); - $this->g = hexdec($green); - $this->b = hexdec($blue); - } -} diff --git a/captcha/securimage_play.php b/captcha/securimage_play.php deleted file mode 100644 index 4f4ffa3..0000000 --- a/captcha/securimage_play.php +++ /dev/null @@ -1,47 +0,0 @@ - - * File: securimage_play.php
- * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or any later version.

- * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details.

- * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

- * - * Any modifications to the library should be indicated clearly in the source code - * to inform users that the changes are not a part of the original software.

- * - * If you found this script useful, please take a quick moment to rate it.
- * http://www.hotscripts.com/rate/49400.html Thanks. - * - * @link http://www.phpcaptcha.org Securimage PHP CAPTCHA - * @link http://www.phpcaptcha.org/latest.zip Download Latest Version - * @link http://www.phpcaptcha.org/Securimage_Docs/ Online Documentation - * @copyright 2012 Drew Phillips - * @author Drew Phillips - * @version 3.2RC2 (April 2012) - * @package Securimage - * - */ - -require_once dirname(__FILE__) . '/securimage.php'; - -$img = new Securimage(); - -// To use an alternate language, uncomment the following and download the files from phpcaptcha.org -// $img->audio_path = $img->securimage_path . '/audio/es/'; - -// If you have more than one captcha on a page, one must use a custom namespace -// $img->namespace = 'form2'; - -$img->outputAudioFile(); diff --git a/captcha/securimage_play.swf b/captcha/securimage_play.swf deleted file mode 100644 index e749bc5..0000000 Binary files a/captcha/securimage_play.swf and /dev/null differ diff --git a/captcha/securimage_show.php b/captcha/securimage_show.php deleted file mode 100644 index c54a4cb..0000000 --- a/captcha/securimage_show.php +++ /dev/null @@ -1,77 +0,0 @@ - - * File: securimage_show.php
- * - * Copyright (c) 2011, Drew Phillips - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - * Any modifications to the library should be indicated clearly in the source code - * to inform users that the changes are not a part of the original software.

- * - * If you found this script useful, please take a quick moment to rate it.
- * http://www.hotscripts.com/rate/49400.html Thanks. - * - * @link http://www.phpcaptcha.org Securimage PHP CAPTCHA - * @link http://www.phpcaptcha.org/latest.zip Download Latest Version - * @link http://www.phpcaptcha.org/Securimage_Docs/ Online Documentation - * @copyright 2012 Drew Phillips - * @author Drew Phillips - * @version 3.2RC2 (April 2012) - * @package Securimage - * - */ - -// Remove the "//" from the following line for debugging problems -// error_reporting(E_ALL); ini_set('display_errors', 1); - -require_once dirname(__FILE__) . '/securimage.php'; - -$img = new Securimage(); - -// You can customize the image by making changes below, some examples are included - remove the "//" to uncomment - -//$img->ttf_file = './Quiff.ttf'; -//$img->captcha_type = Securimage::SI_CAPTCHA_MATHEMATIC; // show a simple math problem instead of text -//$img->case_sensitive = true; // true to use case sensitve codes - not recommended -//$img->image_height = 90; // width in pixels of the image -//$img->image_width = $img->image_height * M_E; // a good formula for image size -//$img->perturbation = .75; // 1.0 = high distortion, higher numbers = more distortion -//$img->image_bg_color = new Securimage_Color("#0099CC"); // image background color -//$img->text_color = new Securimage_Color("#EAEAEA"); // captcha text color -//$img->num_lines = 8; // how many lines to draw over the image -//$img->line_color = new Securimage_Color("#0000CC"); // color of lines over the image -//$img->image_type = SI_IMAGE_JPEG; // render as a jpeg image -//$img->signature_color = new Securimage_Color(rand(0, 64), -// rand(64, 128), -// rand(128, 255)); // random signature color - -// see securimage.php for more options that can be set - - - -$img->show(); // outputs the image and content headers to the browser -// alternate use: -// $img->show('/path/to/background_image.jpg'); diff --git a/captcha/words/words.txt b/captcha/words/words.txt deleted file mode 100644 index 9a444ce..0000000 --- a/captcha/words/words.txt +++ /dev/null @@ -1,15457 +0,0 @@ -aahing -aaliis -aarrgh -abacas -abacus -abakas -abamps -abased -abaser -abases -abasia -abated -abater -abates -abatis -abator -abayas -abbacy -abbess -abbeys -abbots -abduce -abduct -abeles -abelia -abhors -abided -abider -abides -abject -abjure -ablate -ablaut -ablaze -ablest -ablins -abloom -ablush -abmhos -aboard -aboded -abodes -abohms -abolla -abomas -aboral -aborts -abound -aboves -abrade -abroad -abrupt -abseil -absent -absorb -absurd -abulia -abulic -abvolt -abwatt -abying -abysms -acacia -acajou -acarid -acarus -accede -accent -accept -access -accord -accost -accrue -accuse -acedia -acetal -acetic -acetin -acetum -acetyl -achene -achier -aching -acidic -acidly -acinar -acinic -acinus -ackees -acnode -acorns -acquit -across -acting -actins -action -active -actors -actual -acuate -acuity -aculei -acumen -acuter -acutes -adages -adagio -adapts -addend -adders -addict -adding -addled -addles -adduce -adduct -adeems -adenyl -adepts -adhere -adieus -adieux -adipic -adjoin -adjure -adjust -admass -admire -admits -admixt -adnate -adnexa -adnoun -adobes -adobos -adonis -adopts -adored -adorer -adores -adorns -adrift -adroit -adsorb -adults -advect -advent -adverb -advert -advice -advise -adytum -adzing -adzuki -aecial -aecium -aedile -aedine -aeneus -aeonic -aerate -aerial -aeried -aerier -aeries -aerify -aerily -aerobe -aerugo -aether -afeard -affair -affect -affine -affirm -afflux -afford -affray -afghan -afield -aflame -afloat -afraid -afreet -afresh -afrits -afters 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-ananke -anarch -anatto -anchor -anchos -ancone -andros -anears -aneled -aneles -anemia -anemic -anenst -anergy -angary -angels -angers -angina -angled -angler -angles -anglos -angora -angsts -anilin -animal -animas -animes -animis -animus -anions -anises -anisic -ankled -ankles -anklet -ankush -anlace -anlage -annals -anneal -annexe -annona -annoys -annual -annuli -annuls -anodal -anodes -anodic -anoint -anoles -anomic -anomie -anonym -anopia -anorak -anoxia -anoxic -ansate -answer -anteed -anthem -anther -antiar -antick -antics -anting -antler -antral -antres -antrum -anural -anuran -anuria -anuric -anvils -anyhow -anyone -anyons -anyway -aorist -aortae -aortal -aortas -aortic -aoudad -apache -apathy -apercu -apexes -aphids -aphtha -apiary -apical -apices -apiece -aplite -aplomb -apneal -apneas -apneic -apnoea -apodal -apogee -apollo -apolog -aporia -appall -appals -appeal -appear -appels -append -apples -applet -appose -aprons -aptest -arabic -arable -arames -aramid -arbors -arbour 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