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[ticket/11854] Split phpbb\captcha\gd.php
PHPBB3-11854
This commit is contained in:
Tristan Darricau
parent
99b7d18ab2
commit
577f9ac7e4
2 changed files with 804 additions and 0 deletions
277
phpBB/phpbb/captcha/char_cube3d.php
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277
phpBB/phpbb/captcha/char_cube3d.php
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@ -0,0 +1,277 @@
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<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\captcha;
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class char_cube3d
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{
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var $bitmap;
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var $bitmap_width;
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var $bitmap_height;
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var $basis_matrix = array(array(1, 0, 0), array(0, 1, 0), array(0, 0, 1));
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var $abs_x = array(1, 0);
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var $abs_y = array(0, 1);
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var $x = 0;
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var $y = 1;
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var $z = 2;
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var $letter = '';
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/**
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*/
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function __construct(&$bitmaps, $letter)
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{
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$this->bitmap = $bitmaps['data'][$letter];
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$this->bitmap_width = $bitmaps['width'];
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$this->bitmap_height = $bitmaps['height'];
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$this->basis_matrix[0][0] = mt_rand(-600, 600);
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$this->basis_matrix[0][1] = mt_rand(-600, 600);
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$this->basis_matrix[0][2] = (mt_rand(0, 1) * 2000) - 1000;
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$this->basis_matrix[1][0] = mt_rand(-1000, 1000);
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$this->basis_matrix[1][1] = mt_rand(-1000, 1000);
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$this->basis_matrix[1][2] = mt_rand(-1000, 1000);
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$this->normalize($this->basis_matrix[0]);
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$this->normalize($this->basis_matrix[1]);
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$this->basis_matrix[2] = $this->cross_product($this->basis_matrix[0], $this->basis_matrix[1]);
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$this->normalize($this->basis_matrix[2]);
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// $this->basis_matrix[1] might not be (probably isn't) orthogonal to $basis_matrix[0]
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$this->basis_matrix[1] = $this->cross_product($this->basis_matrix[0], $this->basis_matrix[2]);
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$this->normalize($this->basis_matrix[1]);
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// Make sure our cube is facing into the canvas (assuming +z == in)
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for ($i = 0; $i < 3; ++$i)
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{
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if ($this->basis_matrix[$i][2] < 0)
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{
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$this->basis_matrix[$i][0] *= -1;
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$this->basis_matrix[$i][1] *= -1;
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$this->basis_matrix[$i][2] *= -1;
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}
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}
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// Force our "z" basis vector to be the one with greatest absolute z value
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$this->x = 0;
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$this->y = 1;
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$this->z = 2;
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// Swap "y" with "z"
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if ($this->basis_matrix[1][2] > $this->basis_matrix[2][2])
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{
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$this->z = 1;
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$this->y = 2;
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}
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// Swap "x" with "z"
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if ($this->basis_matrix[0][2] > $this->basis_matrix[$this->z][2])
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{
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$this->x = $this->z;
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$this->z = 0;
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}
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// Still need to determine which of $x,$y are which.
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// wrong orientation if y's y-component is less than it's x-component
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// likewise if x's x-component is less than it's y-component
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// if they disagree, go with the one with the greater weight difference.
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// rotate if positive
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$weight = (abs($this->basis_matrix[$this->x][1]) - abs($this->basis_matrix[$this->x][0])) + (abs($this->basis_matrix[$this->y][0]) - abs($this->basis_matrix[$this->y][1]));
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// Swap "x" with "y"
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if ($weight > 0)
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{
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list($this->x, $this->y) = array($this->y, $this->x);
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}
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$this->abs_x = array($this->basis_matrix[$this->x][0], $this->basis_matrix[$this->x][1]);
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$this->abs_y = array($this->basis_matrix[$this->y][0], $this->basis_matrix[$this->y][1]);
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if ($this->abs_x[0] < 0)
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{
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$this->abs_x[0] *= -1;
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$this->abs_x[1] *= -1;
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}
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if ($this->abs_y[1] > 0)
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{
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$this->abs_y[0] *= -1;
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$this->abs_y[1] *= -1;
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}
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$this->letter = $letter;
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}
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/**
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* Draw a character
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*/
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function drawchar($scale, $xoff, $yoff, $img, $background, $colours)
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{
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$width = $this->bitmap_width;
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$height = $this->bitmap_height;
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$bitmap = $this->bitmap;
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$colour1 = $colours[array_rand($colours)];
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$colour2 = $colours[array_rand($colours)];
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$swapx = ($this->basis_matrix[$this->x][0] > 0);
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$swapy = ($this->basis_matrix[$this->y][1] < 0);
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for ($y = 0; $y < $height; ++$y)
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{
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for ($x = 0; $x < $width; ++$x)
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{
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$xp = ($swapx) ? ($width - $x - 1) : $x;
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$yp = ($swapy) ? ($height - $y - 1) : $y;
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if ($bitmap[$height - $yp - 1][$xp])
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{
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$dx = $this->scale($this->abs_x, ($xp - ($swapx ? ($width / 2) : ($width / 2) - 1)) * $scale);
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$dy = $this->scale($this->abs_y, ($yp - ($swapy ? ($height / 2) : ($height / 2) - 1)) * $scale);
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$xo = $xoff + $dx[0] + $dy[0];
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$yo = $yoff + $dx[1] + $dy[1];
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$origin = array(0, 0, 0);
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$xvec = $this->scale($this->basis_matrix[$this->x], $scale);
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$yvec = $this->scale($this->basis_matrix[$this->y], $scale);
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$face_corner = $this->sum2($xvec, $yvec);
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$zvec = $this->scale($this->basis_matrix[$this->z], $scale);
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$x_corner = $this->sum2($xvec, $zvec);
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$y_corner = $this->sum2($yvec, $zvec);
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imagefilledpolygon($img, $this->gen_poly($xo, $yo, $origin, $xvec, $x_corner,$zvec), 4, $colour1);
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imagefilledpolygon($img, $this->gen_poly($xo, $yo, $origin, $yvec, $y_corner,$zvec), 4, $colour2);
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$face = $this->gen_poly($xo, $yo, $origin, $xvec, $face_corner, $yvec);
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imagefilledpolygon($img, $face, 4, $background);
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imagepolygon($img, $face, 4, $colour1);
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}
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}
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}
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}
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/*
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* return a roughly acceptable range of sizes for rendering with this texttype
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*/
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function range()
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{
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return array(3, 4);
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}
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/**
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* Vector length
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*/
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function vectorlen($vector)
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{
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return sqrt(pow($vector[0], 2) + pow($vector[1], 2) + pow($vector[2], 2));
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}
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/**
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* Normalize
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*/
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function normalize(&$vector, $length = 1)
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{
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$length = (( $length < 1) ? 1 : $length);
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$length /= $this->vectorlen($vector);
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$vector[0] *= $length;
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$vector[1] *= $length;
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$vector[2] *= $length;
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}
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/**
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*/
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function cross_product($vector1, $vector2)
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{
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$retval = array(0, 0, 0);
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$retval[0] = (($vector1[1] * $vector2[2]) - ($vector1[2] * $vector2[1]));
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$retval[1] = -(($vector1[0] * $vector2[2]) - ($vector1[2] * $vector2[0]));
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$retval[2] = (($vector1[0] * $vector2[1]) - ($vector1[1] * $vector2[0]));
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return $retval;
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}
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/**
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*/
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function sum($vector1, $vector2)
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{
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return array($vector1[0] + $vector2[0], $vector1[1] + $vector2[1], $vector1[2] + $vector2[2]);
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}
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/**
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*/
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function sum2($vector1, $vector2)
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{
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return array($vector1[0] + $vector2[0], $vector1[1] + $vector2[1]);
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}
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/**
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*/
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function scale($vector, $length)
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{
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if (sizeof($vector) == 2)
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{
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return array($vector[0] * $length, $vector[1] * $length);
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}
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return array($vector[0] * $length, $vector[1] * $length, $vector[2] * $length);
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}
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/**
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*/
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function gen_poly($xoff, $yoff, &$vec1, &$vec2, &$vec3, &$vec4)
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{
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$poly = array();
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$poly[0] = $xoff + $vec1[0];
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$poly[1] = $yoff + $vec1[1];
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$poly[2] = $xoff + $vec2[0];
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$poly[3] = $yoff + $vec2[1];
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$poly[4] = $xoff + $vec3[0];
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$poly[5] = $yoff + $vec3[1];
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$poly[6] = $xoff + $vec4[0];
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$poly[7] = $yoff + $vec4[1];
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return $poly;
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}
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/**
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* dimensions
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*/
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function dimensions($size)
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{
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$xn = $this->scale($this->basis_matrix[$this->x], -($this->bitmap_width / 2) * $size);
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$xp = $this->scale($this->basis_matrix[$this->x], ($this->bitmap_width / 2) * $size);
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$yn = $this->scale($this->basis_matrix[$this->y], -($this->bitmap_height / 2) * $size);
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$yp = $this->scale($this->basis_matrix[$this->y], ($this->bitmap_height / 2) * $size);
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$p = array();
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$p[0] = $this->sum2($xn, $yn);
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$p[1] = $this->sum2($xp, $yn);
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$p[2] = $this->sum2($xp, $yp);
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$p[3] = $this->sum2($xn, $yp);
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$min_x = $max_x = $p[0][0];
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$min_y = $max_y = $p[0][1];
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for ($i = 1; $i < 4; ++$i)
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{
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$min_x = ($min_x > $p[$i][0]) ? $p[$i][0] : $min_x;
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$min_y = ($min_y > $p[$i][1]) ? $p[$i][1] : $min_y;
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$max_x = ($max_x < $p[$i][0]) ? $p[$i][0] : $max_x;
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$max_y = ($max_y < $p[$i][1]) ? $p[$i][1] : $max_y;
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}
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return array($min_x, $min_y, $max_x, $max_y);
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}
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}
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527
phpBB/phpbb/captcha/colour_manager.php
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527
phpBB/phpbb/captcha/colour_manager.php
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<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\captcha;
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class colour_manager
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{
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var $img;
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var $mode;
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var $colours;
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var $named_colours;
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/**
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* Create the colour manager, link it to the image resource
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*/
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function __construct($img, $background = false, $mode = 'ahsv')
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{
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$this->img = $img;
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$this->mode = $mode;
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$this->colours = array();
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$this->named_colours = array();
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if ($background !== false)
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{
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$bg = $this->allocate_named('background', $background);
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imagefill($this->img, 0, 0, $bg);
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}
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}
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/**
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* Lookup a named colour resource
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*/
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function get_resource($named_colour)
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{
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if (isset($this->named_colours[$named_colour]))
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{
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return $this->named_colours[$named_colour];
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}
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if (isset($this->named_rgb[$named_colour]))
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{
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return $this->allocate_named($named_colour, $this->named_rgb[$named_colour], 'rgb');
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}
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return false;
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}
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/**
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* Assign a name to a colour resource
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*/
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function name_colour($name, $resource)
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{
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$this->named_colours[$name] = $resource;
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}
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/**
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* names and allocates a colour resource
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*/
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function allocate_named($name, $colour, $mode = false)
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{
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$resource = $this->allocate($colour, $mode);
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if ($resource !== false)
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{
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$this->name_colour($name, $resource);
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}
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return $resource;
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}
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/**
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* allocates a specified colour into the image
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*/
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function allocate($colour, $mode = false)
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{
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if ($mode === false)
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{
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$mode = $this->mode;
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}
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if (!is_array($colour))
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{
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if (isset($this->named_rgb[$colour]))
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{
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return $this->allocate_named($colour, $this->named_rgb[$colour], 'rgb');
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}
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if (!is_int($colour))
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{
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return false;
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}
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$mode = 'rgb';
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$colour = array(255 & ($colour >> 16), 255 & ($colour >> 8), 255 & $colour);
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}
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if (isset($colour['mode']))
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{
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$mode = $colour['mode'];
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unset($colour['mode']);
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}
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if (isset($colour['random']))
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{
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unset($colour['random']);
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// everything else is params
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return $this->random_colour($colour, $mode);
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}
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$rgb = $this->model_convert($colour, $mode, 'rgb');
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$store = ($this->mode == 'rgb') ? $rgb : $this->model_convert($colour, $mode, $this->mode);
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$resource = imagecolorallocate($this->img, $rgb[0], $rgb[1], $rgb[2]);
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$this->colours[$resource] = $store;
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return $resource;
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}
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/**
|
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* randomly generates a colour, with optional params
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*/
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function random_colour($params = array(), $mode = false)
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{
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if ($mode === false)
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{
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$mode = $this->mode;
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}
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switch ($mode)
|
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{
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case 'rgb':
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// @TODO random rgb generation. do we intend to do this, or is it just too tedious?
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break;
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case 'ahsv':
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case 'hsv':
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default:
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$default_params = array(
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'hue_bias' => false, // degree / 'r'/'g'/'b'/'c'/'m'/'y' /'o'
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'hue_range' => false, // if hue bias, then difference range +/- from bias
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'min_saturation' => 30, // 0 - 100
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'max_saturation' => 80, // 0 - 100
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'min_value' => 30, // 0 - 100
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'max_value' => 80, // 0 - 100
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);
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$alt = ($mode == 'ahsv') ? true : false;
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$params = array_merge($default_params, $params);
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$min_hue = 0;
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$max_hue = 359;
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$min_saturation = max(0, $params['min_saturation']);
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$max_saturation = min(100, $params['max_saturation']);
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$min_value = max(0, $params['min_value']);
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$max_value = min(100, $params['max_value']);
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|
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if ($params['hue_bias'] !== false)
|
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{
|
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if (is_numeric($params['hue_bias']))
|
||||
{
|
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$h = intval($params['hue_bias']) % 360;
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||||
}
|
||||
else
|
||||
{
|
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switch ($params['hue_bias'])
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{
|
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case 'o':
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$h = $alt ? 60 : 30;
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break;
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case 'y':
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$h = $alt ? 120 : 60;
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break;
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||||
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case 'g':
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$h = $alt ? 180 : 120;
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break;
|
||||
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case 'c':
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||||
$h = $alt ? 210 : 180;
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break;
|
||||
|
||||
case 'b':
|
||||
$h = 240;
|
||||
break;
|
||||
|
||||
case 'm':
|
||||
$h = 300;
|
||||
break;
|
||||
|
||||
case 'r':
|
||||
default:
|
||||
$h = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
$min_hue = $h + 360;
|
||||
$max_hue = $h + 360;
|
||||
|
||||
if ($params['hue_range'])
|
||||
{
|
||||
$min_hue -= min(180, $params['hue_range']);
|
||||
$max_hue += min(180, $params['hue_range']);
|
||||
}
|
||||
}
|
||||
|
||||
$h = mt_rand($min_hue, $max_hue);
|
||||
$s = mt_rand($min_saturation, $max_saturation);
|
||||
$v = mt_rand($min_value, $max_value);
|
||||
|
||||
return $this->allocate(array($h, $s, $v), $mode);
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
*/
|
||||
function colour_scheme($resource, $include_original = true)
|
||||
{
|
||||
$mode = 'hsv';
|
||||
|
||||
if (($pre = $this->get_resource($resource)) !== false)
|
||||
{
|
||||
$resource = $pre;
|
||||
}
|
||||
|
||||
$colour = $this->model_convert($this->colours[$resource], $this->mode, $mode);
|
||||
$results = ($include_original) ? array($resource) : array();
|
||||
$colour2 = $colour3 = $colour4 = $colour;
|
||||
$colour2[0] += 150;
|
||||
$colour3[0] += 180;
|
||||
$colour4[0] += 210;
|
||||
|
||||
$results[] = $this->allocate($colour2, $mode);
|
||||
$results[] = $this->allocate($colour3, $mode);
|
||||
$results[] = $this->allocate($colour4, $mode);
|
||||
|
||||
return $results;
|
||||
}
|
||||
|
||||
/**
|
||||
*/
|
||||
function mono_range($resource, $count = 5, $include_original = true)
|
||||
{
|
||||
if (is_array($resource))
|
||||
{
|
||||
$results = array();
|
||||
for ($i = 0, $size = sizeof($resource); $i < $size; ++$i)
|
||||
{
|
||||
$results = array_merge($results, $this->mono_range($resource[$i], $count, $include_original));
|
||||
}
|
||||
return $results;
|
||||
}
|
||||
|
||||
$mode = (in_array($this->mode, array('hsv', 'ahsv'), true) ? $this->mode : 'ahsv');
|
||||
if (($pre = $this->get_resource($resource)) !== false)
|
||||
{
|
||||
$resource = $pre;
|
||||
}
|
||||
|
||||
$colour = $this->model_convert($this->colours[$resource], $this->mode, $mode);
|
||||
|
||||
$results = array();
|
||||
if ($include_original)
|
||||
{
|
||||
$results[] = $resource;
|
||||
$count--;
|
||||
}
|
||||
|
||||
// This is a hard problem. I chicken out and try to maintain readability at the cost of less randomness.
|
||||
|
||||
while ($count > 0)
|
||||
{
|
||||
$colour[1] = ($colour[1] + mt_rand(40,60)) % 99;
|
||||
$colour[2] = ($colour[2] + mt_rand(40,60));
|
||||
$results[] = $this->allocate($colour, $mode);
|
||||
$count--;
|
||||
}
|
||||
return $results;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert from one colour model to another
|
||||
*/
|
||||
function model_convert($colour, $from_model, $to_model)
|
||||
{
|
||||
if ($from_model == $to_model)
|
||||
{
|
||||
return $colour;
|
||||
}
|
||||
|
||||
switch ($to_model)
|
||||
{
|
||||
case 'hsv':
|
||||
|
||||
switch ($from_model)
|
||||
{
|
||||
case 'ahsv':
|
||||
return $this->ah2h($colour);
|
||||
break;
|
||||
|
||||
case 'rgb':
|
||||
return $this->rgb2hsv($colour);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case 'ahsv':
|
||||
|
||||
switch ($from_model)
|
||||
{
|
||||
case 'hsv':
|
||||
return $this->h2ah($colour);
|
||||
break;
|
||||
|
||||
case 'rgb':
|
||||
return $this->h2ah($this->rgb2hsv($colour));
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case 'rgb':
|
||||
switch ($from_model)
|
||||
{
|
||||
case 'hsv':
|
||||
return $this->hsv2rgb($colour);
|
||||
break;
|
||||
|
||||
case 'ahsv':
|
||||
return $this->hsv2rgb($this->ah2h($colour));
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Slightly altered from wikipedia's algorithm
|
||||
*/
|
||||
function hsv2rgb($hsv)
|
||||
{
|
||||
$this->normalize_hue($hsv[0]);
|
||||
|
||||
$h = $hsv[0];
|
||||
$s = min(1, max(0, $hsv[1] / 100));
|
||||
$v = min(1, max(0, $hsv[2] / 100));
|
||||
|
||||
// calculate hue sector
|
||||
$hi = floor($hsv[0] / 60);
|
||||
|
||||
// calculate opposite colour
|
||||
$p = $v * (1 - $s);
|
||||
|
||||
// calculate distance between hex vertices
|
||||
$f = ($h / 60) - $hi;
|
||||
|
||||
// coming in or going out?
|
||||
if (!($hi & 1))
|
||||
{
|
||||
$f = 1 - $f;
|
||||
}
|
||||
|
||||
// calculate adjacent colour
|
||||
$q = $v * (1 - ($f * $s));
|
||||
|
||||
switch ($hi)
|
||||
{
|
||||
case 0:
|
||||
$rgb = array($v, $q, $p);
|
||||
break;
|
||||
|
||||
case 1:
|
||||
$rgb = array($q, $v, $p);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
$rgb = array($p, $v, $q);
|
||||
break;
|
||||
|
||||
case 3:
|
||||
$rgb = array($p, $q, $v);
|
||||
break;
|
||||
|
||||
case 4:
|
||||
$rgb = array($q, $p, $v);
|
||||
break;
|
||||
|
||||
case 5:
|
||||
$rgb = array($v, $p, $q);
|
||||
break;
|
||||
|
||||
default:
|
||||
return array(0, 0, 0);
|
||||
break;
|
||||
}
|
||||
|
||||
return array(255 * $rgb[0], 255 * $rgb[1], 255 * $rgb[2]);
|
||||
}
|
||||
|
||||
/**
|
||||
* (more than) Slightly altered from wikipedia's algorithm
|
||||
*/
|
||||
function rgb2hsv($rgb)
|
||||
{
|
||||
$r = min(255, max(0, $rgb[0]));
|
||||
$g = min(255, max(0, $rgb[1]));
|
||||
$b = min(255, max(0, $rgb[2]));
|
||||
$max = max($r, $g, $b);
|
||||
$min = min($r, $g, $b);
|
||||
|
||||
$v = $max / 255;
|
||||
$s = (!$max) ? 0 : 1 - ($min / $max);
|
||||
|
||||
// if max - min is 0, we want hue to be 0 anyway.
|
||||
$h = $max - $min;
|
||||
|
||||
if ($h)
|
||||
{
|
||||
switch ($max)
|
||||
{
|
||||
case $g:
|
||||
$h = 120 + (60 * ($b - $r) / $h);
|
||||
break;
|
||||
|
||||
case $b:
|
||||
$h = 240 + (60 * ($r - $g) / $h);
|
||||
break;
|
||||
|
||||
case $r:
|
||||
$h = 360 + (60 * ($g - $b) / $h);
|
||||
break;
|
||||
}
|
||||
}
|
||||
$this->normalize_hue($h);
|
||||
|
||||
return array($h, $s * 100, $v * 100);
|
||||
}
|
||||
|
||||
/**
|
||||
*/
|
||||
function normalize_hue(&$hue)
|
||||
{
|
||||
$hue %= 360;
|
||||
|
||||
if ($hue < 0)
|
||||
{
|
||||
$hue += 360;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Alternate hue to hue
|
||||
*/
|
||||
function ah2h($ahue)
|
||||
{
|
||||
if (is_array($ahue))
|
||||
{
|
||||
$ahue[0] = $this->ah2h($ahue[0]);
|
||||
return $ahue;
|
||||
}
|
||||
$this->normalize_hue($ahue);
|
||||
|
||||
// blue through red is already ok
|
||||
if ($ahue >= 240)
|
||||
{
|
||||
return $ahue;
|
||||
}
|
||||
|
||||
// ahue green is at 180
|
||||
if ($ahue >= 180)
|
||||
{
|
||||
// return (240 - (2 * (240 - $ahue)));
|
||||
return (2 * $ahue) - 240; // equivalent
|
||||
}
|
||||
|
||||
// ahue yellow is at 120 (RYB rather than RGB)
|
||||
if ($ahue >= 120)
|
||||
{
|
||||
return $ahue - 60;
|
||||
}
|
||||
|
||||
return $ahue / 2;
|
||||
}
|
||||
|
||||
/**
|
||||
* hue to Alternate hue
|
||||
*/
|
||||
function h2ah($hue)
|
||||
{
|
||||
if (is_array($hue))
|
||||
{
|
||||
$hue[0] = $this->h2ah($hue[0]);
|
||||
return $hue;
|
||||
}
|
||||
$this->normalize_hue($hue);
|
||||
|
||||
// blue through red is already ok
|
||||
if ($hue >= 240)
|
||||
{
|
||||
return $hue;
|
||||
}
|
||||
else if ($hue <= 60)
|
||||
{
|
||||
return $hue * 2;
|
||||
}
|
||||
else if ($hue <= 120)
|
||||
{
|
||||
return $hue + 60;
|
||||
}
|
||||
else
|
||||
{
|
||||
return ($hue + 240) / 2;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue