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LCOV - code coverage report
Current view: top level - ext/standard - iptc.c (source / functions) Hit Total Coverage
Test: PHP Code Coverage Lines: 40 134 29.9 %
Date: 2014-10-14 Functions: 3 7 42.9 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :    +----------------------------------------------------------------------+
       3             :    | PHP Version 7                                                        |
       4             :    +----------------------------------------------------------------------+
       5             :    | Copyright (c) 1997-2014 The PHP Group                                |
       6             :    +----------------------------------------------------------------------+
       7             :    | This source file is subject to version 3.01 of the PHP license,      |
       8             :    | that is bundled with this package in the file LICENSE, and is        |
       9             :    | available through the world-wide-web at the following url:           |
      10             :    | http://www.php.net/license/3_01.txt                                  |
      11             :    | If you did not receive a copy of the PHP license and are unable to   |
      12             :    | obtain it through the world-wide-web, please send a note to          |
      13             :    | license@php.net so we can mail you a copy immediately.               |
      14             :    +----------------------------------------------------------------------+
      15             :    | Author: Thies C. Arntzen <thies@thieso.net>                          |
      16             :    +----------------------------------------------------------------------+
      17             :  */
      18             : 
      19             : /* $Id$ */
      20             : 
      21             : /*
      22             :  * Functions to parse & compse IPTC data.
      23             :  * PhotoShop >= 3.0 can read and write textual data to JPEG files.
      24             :  * ... more to come .....
      25             :  * 
      26             :  * i know, parts of this is now duplicated in image.c 
      27             :  * but in this case i think it's okay!
      28             :  */
      29             : 
      30             : /*
      31             :  * TODO:
      32             :  *  - add IPTC translation table
      33             :  */
      34             :  
      35             : #include "php.h"
      36             : #include "php_iptc.h"
      37             : #include "ext/standard/head.h"
      38             : 
      39             : #include <sys/stat.h>
      40             : 
      41             : 
      42             : /* some defines for the different JPEG block types */
      43             : #define M_SOF0  0xC0            /* Start Of Frame N */
      44             : #define M_SOF1  0xC1            /* N indicates which compression process */
      45             : #define M_SOF2  0xC2            /* Only SOF0-SOF2 are now in common use */
      46             : #define M_SOF3  0xC3
      47             : #define M_SOF5  0xC5            /* NB: codes C4 and CC are NOT SOF markers */
      48             : #define M_SOF6  0xC6
      49             : #define M_SOF7  0xC7
      50             : #define M_SOF9  0xC9
      51             : #define M_SOF10 0xCA
      52             : #define M_SOF11 0xCB
      53             : #define M_SOF13 0xCD
      54             : #define M_SOF14 0xCE
      55             : #define M_SOF15 0xCF
      56             : #define M_SOI   0xD8
      57             : #define M_EOI   0xD9            /* End Of Image (end of datastream) */
      58             : #define M_SOS   0xDA            /* Start Of Scan (begins compressed data) */
      59             : #define M_APP0  0xe0
      60             : #define M_APP1  0xe1
      61             : #define M_APP2  0xe2
      62             : #define M_APP3  0xe3
      63             : #define M_APP4  0xe4
      64             : #define M_APP5  0xe5
      65             : #define M_APP6  0xe6
      66             : #define M_APP7  0xe7
      67             : #define M_APP8  0xe8
      68             : #define M_APP9  0xe9
      69             : #define M_APP10 0xea
      70             : #define M_APP11 0xeb
      71             : #define M_APP12 0xec
      72             : #define M_APP13 0xed
      73             : #define M_APP14 0xee
      74             : #define M_APP15 0xef
      75             : 
      76             : /* {{{ php_iptc_put1
      77             :  */
      78           0 : static int php_iptc_put1(FILE *fp, int spool, unsigned char c, unsigned char **spoolbuf TSRMLS_DC)
      79             : { 
      80           0 :         if (spool > 0)
      81           0 :                 PUTC(c);
      82             : 
      83           0 :         if (spoolbuf) *(*spoolbuf)++ = c;
      84             : 
      85           0 :         return c;
      86             : }
      87             : /* }}} */
      88             : 
      89             : /* {{{ php_iptc_get1
      90             :  */
      91           1 : static int php_iptc_get1(FILE *fp, int spool, unsigned char **spoolbuf TSRMLS_DC)
      92             : {       
      93             :         int c;
      94             :         char cc;
      95             : 
      96           1 :         c = getc(fp);
      97             : 
      98           1 :         if (c == EOF) return EOF;
      99             : 
     100           1 :         if (spool > 0) {
     101           0 :                 cc = c;
     102           0 :                 PUTC(cc);
     103             :         }
     104             : 
     105           1 :         if (spoolbuf) *(*spoolbuf)++ = c;
     106             : 
     107           1 :         return c;
     108             : }
     109             : /* }}} */
     110             : 
     111             : /* {{{ php_iptc_read_remaining
     112             :  */
     113           0 : static int php_iptc_read_remaining(FILE *fp, int spool, unsigned char **spoolbuf TSRMLS_DC)
     114             : {
     115           0 :         while (php_iptc_get1(fp, spool, spoolbuf TSRMLS_CC) != EOF) continue;
     116             : 
     117           0 :         return M_EOI;
     118             : }
     119             : /* }}} */
     120             : 
     121             : /* {{{ php_iptc_skip_variable
     122             :  */
     123           0 : static int php_iptc_skip_variable(FILE *fp, int spool, unsigned char **spoolbuf TSRMLS_DC)
     124             : { 
     125             :         unsigned int  length;
     126             :         int c1, c2;
     127             : 
     128           0 :     if ((c1 = php_iptc_get1(fp, spool, spoolbuf TSRMLS_CC)) == EOF) return M_EOI;
     129             : 
     130           0 :     if ((c2 = php_iptc_get1(fp, spool, spoolbuf TSRMLS_CC)) == EOF) return M_EOI;
     131             : 
     132           0 :         length = (((unsigned char) c1) << 8) + ((unsigned char) c2);
     133             : 
     134           0 :         length -= 2;
     135             : 
     136           0 :         while (length--)
     137           0 :                 if (php_iptc_get1(fp, spool, spoolbuf TSRMLS_CC) == EOF) return M_EOI;
     138             : 
     139           0 :         return 0;
     140             : }
     141             : /* }}} */
     142             : 
     143             : /* {{{ php_iptc_next_marker
     144             :  */
     145           0 : static int php_iptc_next_marker(FILE *fp, int spool, unsigned char **spoolbuf TSRMLS_DC)
     146             : {
     147             :     int c;
     148             : 
     149             :     /* skip unimportant stuff */
     150             : 
     151           0 :     c = php_iptc_get1(fp, spool, spoolbuf TSRMLS_CC);
     152             : 
     153           0 :         if (c == EOF) return M_EOI;
     154             : 
     155           0 :     while (c != 0xff) {
     156           0 :         if ((c = php_iptc_get1(fp, spool, spoolbuf TSRMLS_CC)) == EOF)
     157           0 :             return M_EOI; /* we hit EOF */
     158             :     }
     159             : 
     160             :     /* get marker byte, swallowing possible padding */
     161             :     do {
     162           0 :         c = php_iptc_get1(fp, 0, 0 TSRMLS_CC);
     163           0 :                 if (c == EOF)
     164           0 :             return M_EOI;       /* we hit EOF */
     165             :                 else
     166           0 :                 if (c == 0xff)
     167           0 :                         php_iptc_put1(fp, spool, (unsigned char)c, spoolbuf TSRMLS_CC);
     168           0 :     } while (c == 0xff);
     169             : 
     170           0 :     return (unsigned int) c;
     171             : }
     172             : /* }}} */
     173             : 
     174             : static char psheader[] = "\xFF\xED\0\0Photoshop 3.0\08BIM\x04\x04\0\0\0\0";
     175             : 
     176             : /* {{{ proto array iptcembed(string iptcdata, string jpeg_file_name [, int spool])
     177             :    Embed binary IPTC data into a JPEG image. */
     178           1 : PHP_FUNCTION(iptcembed)
     179             : {
     180             :         char *iptcdata, *jpeg_file;
     181             :         size_t iptcdata_len, jpeg_file_len;
     182           1 :         zend_long spool = 0;
     183             :         FILE *fp;
     184           1 :         unsigned int marker, done = 0;
     185             :         int inx;
     186           1 :         unsigned char *spoolbuf = NULL, *poi = NULL;
     187             :         zend_stat_t sb;
     188           1 :         zend_bool written = 0;
     189             : 
     190           1 :         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sp|l", &iptcdata, &iptcdata_len, &jpeg_file, &jpeg_file_len, &spool) != SUCCESS) {
     191           0 :                 return;
     192             :         }
     193             : 
     194           1 :         if (php_check_open_basedir(jpeg_file TSRMLS_CC)) {
     195           0 :                 RETURN_FALSE;
     196             :         }
     197             : 
     198           1 :         if ((fp = VCWD_FOPEN(jpeg_file, "rb")) == 0) {
     199           0 :                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to open %s", jpeg_file);
     200           0 :                 RETURN_FALSE;
     201             :         }
     202             : 
     203           1 :         if (spool < 2) {
     204           1 :                 zend_fstat(fileno(fp), &sb);
     205             : 
     206           1 :                 poi = spoolbuf = safe_emalloc(1, iptcdata_len + sizeof(psheader) + sb.st_size + 1024, 1);
     207           1 :                 memset(poi, 0, iptcdata_len + sizeof(psheader) + sb.st_size + 1024 + 1);
     208             :         } 
     209             : 
     210           1 :         if (php_iptc_get1(fp, spool, poi?&poi:0 TSRMLS_CC) != 0xFF) {
     211           1 :                 fclose(fp);
     212           1 :                 if (spoolbuf) {
     213           1 :                         efree(spoolbuf);
     214             :                 }
     215           1 :                 RETURN_FALSE;
     216             :         }
     217             : 
     218           0 :         if (php_iptc_get1(fp, spool, poi?&poi:0 TSRMLS_CC) != 0xD8) {
     219           0 :                 fclose(fp);
     220           0 :                 if (spoolbuf) {
     221           0 :                         efree(spoolbuf);
     222             :                 }
     223           0 :                 RETURN_FALSE;
     224             :         }
     225             : 
     226           0 :         while (!done) {
     227           0 :                 marker = php_iptc_next_marker(fp, spool, poi?&poi:0 TSRMLS_CC);
     228             : 
     229           0 :                 if (marker == M_EOI) { /* EOF */
     230           0 :                         break;
     231           0 :                 } else if (marker != M_APP13) { 
     232           0 :                         php_iptc_put1(fp, spool, (unsigned char)marker, poi?&poi:0 TSRMLS_CC);
     233             :                 }
     234             : 
     235           0 :                 switch (marker) {
     236             :                         case M_APP13:
     237             :                                 /* we are going to write a new APP13 marker, so don't output the old one */
     238           0 :                                 php_iptc_skip_variable(fp, 0, 0 TSRMLS_CC);    
     239           0 :                                 php_iptc_read_remaining(fp, spool, poi?&poi:0 TSRMLS_CC);
     240           0 :                                 done = 1;
     241           0 :                                 break;
     242             : 
     243             :                         case M_APP0:
     244             :                                 /* APP0 is in each and every JPEG, so when we hit APP0 we insert our new APP13! */
     245             :                         case M_APP1:
     246           0 :                                 if (written) {
     247             :                                         /* don't try to write the data twice */
     248           0 :                                         break;
     249             :                                 }
     250           0 :                                 written = 1;
     251             : 
     252           0 :                                 php_iptc_skip_variable(fp, spool, poi?&poi:0 TSRMLS_CC);
     253             : 
     254           0 :                                 if (iptcdata_len & 1) {
     255           0 :                                         iptcdata_len++; /* make the length even */
     256             :                                 }
     257             : 
     258           0 :                                 psheader[ 2 ] = (iptcdata_len+28)>>8;
     259           0 :                                 psheader[ 3 ] = (iptcdata_len+28)&0xff;
     260             : 
     261           0 :                                 for (inx = 0; inx < 28; inx++) {
     262           0 :                                         php_iptc_put1(fp, spool, psheader[inx], poi?&poi:0 TSRMLS_CC);
     263             :                                 }
     264             : 
     265           0 :                                 php_iptc_put1(fp, spool, (unsigned char)(iptcdata_len>>8), poi?&poi:0 TSRMLS_CC);
     266           0 :                                 php_iptc_put1(fp, spool, (unsigned char)(iptcdata_len&0xff), poi?&poi:0 TSRMLS_CC);
     267             : 
     268           0 :                                 for (inx = 0; inx < iptcdata_len; inx++) {
     269           0 :                                         php_iptc_put1(fp, spool, iptcdata[inx], poi?&poi:0 TSRMLS_CC);
     270             :                                 }
     271           0 :                                 break;
     272             : 
     273             :                         case M_SOS:                                                             
     274             :                                 /* we hit data, no more marker-inserting can be done! */
     275           0 :                                 php_iptc_read_remaining(fp, spool, poi?&poi:0 TSRMLS_CC);
     276           0 :                                 done = 1;
     277           0 :                                 break;
     278             : 
     279             :                         default:
     280           0 :                                 php_iptc_skip_variable(fp, spool, poi?&poi:0 TSRMLS_CC);
     281             :                                 break;
     282             :                 }
     283             :         }
     284             : 
     285           0 :         fclose(fp);
     286             : 
     287           0 :         if (spool < 2) {
     288             :                 // TODO: avoid reallocation ???
     289           0 :                 RETVAL_STRINGL(spoolbuf, poi - spoolbuf);
     290           0 :                 efree(spoolbuf);
     291             :         } else {
     292           0 :                 RETURN_TRUE;
     293             :         }
     294             : }
     295             : /* }}} */
     296             : 
     297             : /* {{{ proto array iptcparse(string iptcdata)
     298             :    Parse binary IPTC-data into associative array */
     299           1 : PHP_FUNCTION(iptcparse)
     300             : {
     301           1 :         int inx = 0, len;
     302           1 :         unsigned int tagsfound = 0;
     303             :         unsigned char *buffer, recnum, dataset;
     304             :         char *str, key[16];
     305             :         size_t str_len;
     306             :         zval values, *element;
     307             : 
     308           1 :         if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &str, &str_len) != SUCCESS) {
     309           0 :                 return;
     310             :         }
     311             : 
     312           1 :         buffer = (unsigned char *)str;
     313             : 
     314           2 :         while (inx < str_len) { /* find 1st tag */
     315           1 :                 if ((buffer[inx] == 0x1c) && ((buffer[inx+1] == 0x01) || (buffer[inx+1] == 0x02))){ 
     316             :                         break;
     317             :                 } else {
     318           0 :                         inx++;
     319             :                 }
     320             :         }
     321             : 
     322           2 :         while (inx < str_len) {
     323           1 :                 if (buffer[ inx++ ] != 0x1c) {
     324           0 :                         break;   /* we ran against some data which does not conform to IPTC - stop parsing! */
     325             :                 } 
     326             :                 
     327           1 :                 if ((inx + 4) >= str_len)
     328           0 :                         break;
     329             : 
     330           1 :                 dataset = buffer[ inx++ ];
     331           1 :                 recnum = buffer[ inx++ ];
     332             : 
     333           1 :                 if (buffer[ inx ] & (unsigned char) 0x80) { /* long tag */
     334           1 :                         if((inx+6) >= str_len) {
     335           1 :                                 break;
     336             :                         }
     337           0 :                         len = (((zend_long) buffer[ inx + 2 ]) << 24) + (((zend_long) buffer[ inx + 3 ]) << 16) + 
     338           0 :                                   (((zend_long) buffer[ inx + 4 ]) <<  8) + (((zend_long) buffer[ inx + 5 ]));
     339           0 :                         inx += 6;
     340             :                 } else { /* short tag */
     341           0 :                         len = (((unsigned short) buffer[ inx ])<<8) | (unsigned short)buffer[ inx+1 ];
     342           0 :                         inx += 2;
     343             :                 }
     344             :                 
     345           0 :                 if ((len < 0) || (len > str_len) || (inx + len) > str_len) {
     346             :                         break;
     347             :                 }
     348             : 
     349           0 :                 snprintf(key, sizeof(key), "%d#%03d", (unsigned int) dataset, (unsigned int) recnum);
     350             : 
     351           0 :                 if (tagsfound == 0) { /* found the 1st tag - initialize the return array */
     352           0 :                         array_init(return_value);
     353             :                 }
     354             : 
     355           0 :                 if ((element = zend_hash_str_find(Z_ARRVAL_P(return_value), key, strlen(key))) == NULL) {
     356           0 :                         array_init(&values);
     357             :                         
     358           0 :                         element = zend_hash_str_update(Z_ARRVAL_P(return_value), key, strlen(key), &values);
     359             :                 } 
     360             :                         
     361           0 :                 add_next_index_stringl(element, buffer+inx, len);
     362           0 :                 inx += len;
     363           0 :                 tagsfound++;
     364             :         }
     365             : 
     366           1 :         if (! tagsfound) {
     367           1 :                 RETURN_FALSE;
     368             :         }
     369             : }
     370             : /* }}} */
     371             : 
     372             : /*
     373             :  * Local variables:
     374             :  * tab-width: 4
     375             :  * c-basic-offset: 4
     376             :  * End:
     377             :  * vim600: sw=4 ts=4 fdm=marker
     378             :  * vim<600: sw=4 ts=4
     379             :  */

Generated by: LCOV version 1.10

Generated at Tue, 14 Oct 2014 07:25:50 +0000 (6 days ago)

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