Using an open-ended mail form on my site?

specialk · May 13th, 2005, 7:28 PM

I'd like to offer my users the opportunity to email anyone with an emil address from my site annonomously. ie they input a recipient address, type a message and press send.

Will this just be used by spammers?

Thanks

**Kickersny.com** · May 13th, 2005, 8:35 PM

add in one of those random number generators and make them type it in.

scottmcarthur · May 13th, 2005, 11:50 PM

Here's a php script to produce turing numbers dynamically. You need to use session variables with this but if you undertstand PHP its very straight forward. It produces the turing image like the one on my site (http://www.coderhosting.com/purchase.php?package=0) . You need to put the desired display font in the directory with it as 'font.ttf'

PHP Code:


			
<?php



session_start();



$src  = 'ABCDEFGHIJKLMNPQRSTUVWXYZ';

$src .= '23456789';

$srclen = strlen($src)-1;

$length = 8;

$font = 'font.ttf';

$output_type='jpeg';

//$output_type='png';



/* font size range, angle range, character padding */



$min_font_size = 16;

$max_font_size = 16;

$min_angle = -15;

$max_angle = 15;

$char_padding = 4;





/* initialize variables */



$_SESSION['turing_string'] = '';

$data = array();

$image_width = $image_height = 0;





/* build the data array of the characters, size, placement, etc. */



for($i=0; $i<$length; $i++) {



    $char = substr($src, mt_rand(0,$srclen), 1);

    $_SESSION['turing_string'] .= $char;



    $size = mt_rand($min_font_size, $max_font_size);

    $angle = mt_rand($min_angle, $max_angle);



    $bbox = ImageTTFBBox( $size, $angle, $font, $char );



    $char_width = max($bbox[2],$bbox[4]) - min($bbox[0],$bbox[6]);

    $char_height = max($bbox[1],$bbox[3]) - min($bbox[7],$bbox[5]);



    $image_width += $char_width + $char_padding;

    $image_height = max($image_height, $char_height);



    $data[] = array(

        'char'        => $char,

        'size'        => $size,

        'angle'        => $angle,

        'height'    => $char_height,

        'width'        => $char_width,

    );

}





/* calculate the final image size, adding some padding */



$x_padding = 12;

$image_width += ($x_padding * 2);

$image_height = ($image_height * 1.5) + 2;





/* build the image, and allocte the colors */



$im = ImageCreate($image_width, $image_height);

$r = 51 * mt_rand(4,5);

$g = 51 * mt_rand(4,5);

$b = 51 * mt_rand(4,5);

$color_bg        = ImageColorAllocate($im,  124,  124,  124 );



$r = 51 * mt_rand(3,4);

$g = 51 * mt_rand(3,4);

$b = 51 * mt_rand(3,4);

$color_line0    = ImageColorAllocate($im,  $r,  $g,  $b );



$r = 51 * mt_rand(3,4);

$g = 51 * mt_rand(3,4);

$b = 51 * mt_rand(3,4);

$color_line1    = ImageColorAllocate($im,  $r,  $g,  $b );



$r = 51 * mt_rand(1,2);

$g = 51 * mt_rand(1,2);

$b = 51 * mt_rand(1,2);

$color_text        = ImageColorAllocate($im,  255,  255,  255 );

$color_border      = ImageColorAllocate($im,   92,   92,   92 );

$color_bk          = ImageColorAllocate($im,   51,   51,   51 );





/* make the random background lines */



for($l=0; $l<4; $l++) {



    $c = 'color_line' . ($l%2);



    $lx = mt_rand(0,$image_width+$image_height);

    $lw = mt_rand(0,3);

    ImageFilledRectangle($im, $lx, 0, $lx+$lw, $image_height-1, $$c );

}









/* output each character */



$pos_x = $x_padding + ($char_padding / 2);

foreach($data as $d) {



    $pos_y = ( ( $image_height + $d['height'] ) / 2 );

    ImageTTFText($im, $d['size'], $d['angle'], $pos_x, $pos_y, $color_text, $font, $d['char'] );



    $pos_x += $d['width'] + $char_padding;



}





/* a nice border */



//ImageRectangle($im, 0, 0, $image_width-1, $image_height-1, $color_border);

//ImageRectangle($im, 1, 1, $image_width-2, $image_height-2, $color_bk);







/* display it */





switch ($output_type) {

  case 'jpeg':

    Header('Content-type: image/jpeg');

    ImageJPEG($im,NULL,100);

    break;



  case 'png':

  default:

    Header('Content-type: image/png');

    ImagePNG($im);

    break;

}

ImageDestroy($im);



?>

Hope that helps

specialk · May 16th, 2005, 10:02 AM

That's brilliant, thanks guys!

May 13th, 2005, 7:28 PM	#1 (permalink)
specialk Registered User Seasoned Poster Joined in Jan 2004 Hosted on pass5 44 posts Gave thanks: 0 Thanked 0 times	Using an open-ended mail form on my site? I'd like to offer my users the opportunity to email anyone with an emil address from my site annonomously. ie they input a recipient address, type a message and press send. Will this just be used by spammers? Thanks __________________ Reseller account on pass5

May 13th, 2005, 8:35 PM	#2 (permalink)
Kickersny.com Surpass Fan Super #1 Joined in Aug 2004 Hosted on SH58 1,688 posts Gave thanks: 6 Thanked 7 times	add in one of those random number generators and make them type it in. __________________ - Evan Charlton \| [site] \| Server - SH58

May 13th, 2005, 11:50 PM	#3 (permalink)
scottmcarthur Registered User On a golden path... Joined in Jun 2004 Lives in UK Hosted on Pass7 394 posts Gave thanks: 0 Thanked 1 Time in 1 Post	Here's a php script to produce turing numbers dynamically. You need to use session variables with this but if you undertstand PHP its very straight forward. It produces the turing image like the one on my site (http://www.coderhosting.com/purchase.php?package=0) . You need to put the desired display font in the directory with it as 'font.ttf' PHP Code: <?php session_start(); $src = 'ABCDEFGHIJKLMNPQRSTUVWXYZ'; $src .= '23456789'; $srclen = strlen($src)-1; $length = 8; $font = 'font.ttf'; $output_type='jpeg'; //$output_type='png'; /* font size range, angle range, character padding / $min_font_size = 16; $max_font_size = 16; $min_angle = -15; $max_angle = 15; $char_padding = 4; / initialize variables / $_SESSION['turing_string'] = ''; $data = array(); $image_width = $image_height = 0; / build the data array of the characters, size, placement, etc. / for($i=0; $i<$length; $i++) { $char = substr($src, mt_rand(0,$srclen), 1); $_SESSION['turing_string'] .= $char; $size = mt_rand($min_font_size, $max_font_size); $angle = mt_rand($min_angle, $max_angle); $bbox = ImageTTFBBox( $size, $angle, $font, $char ); $char_width = max($bbox[2],$bbox[4]) - min($bbox[0],$bbox[6]); $char_height = max($bbox[1],$bbox[3]) - min($bbox[7],$bbox[5]); $image_width += $char_width + $char_padding; $image_height = max($image_height, $char_height); $data[] = array( 'char' => $char, 'size' => $size, 'angle' => $angle, 'height' => $char_height, 'width' => $char_width, ); } / calculate the final image size, adding some padding / $x_padding = 12; $image_width += ($x_padding 2); $image_height = ($image_height * 1.5) + 2; /* build the image, and allocte the colors / $im = ImageCreate($image_width, $image_height); $r = 51 mt_rand(4,5); $g = 51 * mt_rand(4,5); $b = 51 * mt_rand(4,5); $color_bg = ImageColorAllocate($im, 124, 124, 124 ); $r = 51 * mt_rand(3,4); $g = 51 * mt_rand(3,4); $b = 51 * mt_rand(3,4); $color_line0 = ImageColorAllocate($im, $r, $g, $b ); $r = 51 * mt_rand(3,4); $g = 51 * mt_rand(3,4); $b = 51 * mt_rand(3,4); $color_line1 = ImageColorAllocate($im, $r, $g, $b ); $r = 51 * mt_rand(1,2); $g = 51 * mt_rand(1,2); $b = 51 * mt_rand(1,2); $color_text = ImageColorAllocate($im, 255, 255, 255 ); $color_border = ImageColorAllocate($im, 92, 92, 92 ); $color_bk = ImageColorAllocate($im, 51, 51, 51 ); /* make the random background lines / for($l=0; $l<4; $l++) { $c = 'color_line' . ($l%2); $lx = mt_rand(0,$image_width+$image_height); $lw = mt_rand(0,3); ImageFilledRectangle($im, $lx, 0, $lx+$lw, $image_height-1, $$c ); } / output each character / $pos_x = $x_padding + ($char_padding / 2); foreach($data as $d) { $pos_y = ( ( $image_height + $d['height'] ) / 2 ); ImageTTFText($im, $d['size'], $d['angle'], $pos_x, $pos_y, $color_text, $font, $d['char'] ); $pos_x += $d['width'] + $char_padding; } / a nice border / //ImageRectangle($im, 0, 0, $image_width-1, $image_height-1, $color_border); //ImageRectangle($im, 1, 1, $image_width-2, $image_height-2, $color_bk); / display it */ switch ($output_type) { case 'jpeg': Header('Content-type: image/jpeg'); ImageJPEG($im,NULL,100); break; case 'png': default: Header('Content-type: image/png'); ImagePNG($im); break; } ImageDestroy($im); ?> Hope that helps __________________ http://www.coderhosting.com - Pass7 Get Your Own EF Live Monitor

May 16th, 2005, 10:02 AM	#4 (permalink)
specialk Registered User Seasoned Poster Joined in Jan 2004 Hosted on pass5 44 posts Gave thanks: 0 Thanked 0 times	That's brilliant, thanks guys! __________________ Reseller account on pass5

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