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LCOV - code coverage report
Current view: top level - ext/bz2 - bz2_filter.c (source / functions) Hit Total Coverage
Test: PHP Code Coverage Lines: 133 205 64.9 %
Date: 2014-07-21 Functions: 7 7 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :    +----------------------------------------------------------------------+
       3             :    | PHP Version 5                                                        |
       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             :    | Authors: Sara Golemon (pollita@php.net)                              |
      16             :    +----------------------------------------------------------------------+
      17             : */
      18             : 
      19             : /* $Id$ */
      20             : 
      21             : #ifdef HAVE_CONFIG_H
      22             : #include "config.h"
      23             : #endif
      24             : 
      25             : #include "php.h"
      26             : #include "php_bz2.h"
      27             : 
      28             : /* {{{ data structure */
      29             : 
      30             : enum strm_status {
      31             :     PHP_BZ2_UNITIALIZED,
      32             :     PHP_BZ2_RUNNING,
      33             :     PHP_BZ2_FINISHED
      34             : };
      35             : 
      36             : typedef struct _php_bz2_filter_data {
      37             :         int persistent;
      38             :         bz_stream strm;
      39             :         char *inbuf;
      40             :         size_t inbuf_len;
      41             :         char *outbuf;
      42             :         size_t outbuf_len;
      43             :         
      44             :         /* Decompress options */
      45             :         enum strm_status status;
      46             :         unsigned int small_footprint : 1;
      47             :         unsigned int expect_concatenated : 1;
      48             : } php_bz2_filter_data;
      49             : 
      50             : /* }}} */
      51             : 
      52             : /* {{{ Memory management wrappers */
      53             : 
      54         142 : static void *php_bz2_alloc(void *opaque, int items, int size)
      55             : {
      56         142 :         return (void *)safe_pemalloc(items, size, 0, ((php_bz2_filter_data*)opaque)->persistent);
      57             : }
      58             : 
      59         142 : static void php_bz2_free(void *opaque, void *address)
      60             : {
      61         142 :         pefree((void *)address, ((php_bz2_filter_data*)opaque)->persistent);
      62         142 : }
      63             : /* }}} */
      64             : 
      65             : /* {{{ bzip2.decompress filter implementation */
      66             : 
      67          59 : static php_stream_filter_status_t php_bz2_decompress_filter(
      68             :         php_stream *stream,
      69             :         php_stream_filter *thisfilter,
      70             :         php_stream_bucket_brigade *buckets_in,
      71             :         php_stream_bucket_brigade *buckets_out,
      72             :         size_t *bytes_consumed,
      73             :         int flags
      74             :         TSRMLS_DC)
      75             : {
      76             :         php_bz2_filter_data *data;
      77             :         php_stream_bucket *bucket;
      78          59 :         size_t consumed = 0;
      79             :         int status;
      80          59 :         php_stream_filter_status_t exit_status = PSFS_FEED_ME;
      81             :         bz_stream *streamp;
      82             : 
      83          59 :         if (!thisfilter || !thisfilter->abstract) {
      84             :                 /* Should never happen */
      85           0 :                 return PSFS_ERR_FATAL;
      86             :         }
      87             : 
      88          59 :         data = (php_bz2_filter_data *)(thisfilter->abstract);
      89          59 :         streamp = &(data->strm);
      90             : 
      91         141 :         while (buckets_in->head) {
      92          23 :                 size_t bin = 0, desired;
      93             : 
      94          23 :                 bucket = php_stream_bucket_make_writeable(buckets_in->head TSRMLS_CC);
      95          83 :                 while (bin < bucket->buflen) {
      96          38 :                         if (data->status == PHP_BZ2_UNITIALIZED) {
      97          23 :                                 status = BZ2_bzDecompressInit(streamp, 0, data->small_footprint);
      98             : 
      99          23 :                                 if (BZ_OK != status) {
     100           0 :                                         php_stream_bucket_delref(bucket TSRMLS_CC);
     101           0 :                                         return PSFS_ERR_FATAL;
     102             :                                 }
     103             : 
     104          23 :                                 data->status = PHP_BZ2_RUNNING;
     105             :                         }
     106             : 
     107          38 :                         if (data->status != PHP_BZ2_RUNNING) {
     108           1 :                                 consumed += bucket->buflen;
     109           1 :                                 break;
     110             :                         }
     111             : 
     112          37 :                         desired = bucket->buflen - bin;
     113          37 :                         if (desired > data->inbuf_len) {
     114           2 :                                 desired = data->inbuf_len;
     115             :                         }
     116          37 :                         memcpy(data->strm.next_in, bucket->buf + bin, desired);
     117          37 :                         data->strm.avail_in = desired;
     118             : 
     119          37 :                         status = BZ2_bzDecompress(&(data->strm));
     120             : 
     121          37 :                         if (status == BZ_STREAM_END) {
     122          23 :                                 BZ2_bzDecompressEnd(&(data->strm));
     123          23 :                                 if (data->expect_concatenated) {
     124           0 :                                         data->status = PHP_BZ2_UNITIALIZED;
     125             :                                 } else {
     126          23 :                                         data->status = PHP_BZ2_FINISHED;
     127             :                                 }
     128          14 :                         } else if (status != BZ_OK) {
     129             :                                 /* Something bad happened */
     130           0 :                                 php_stream_bucket_delref(bucket TSRMLS_CC);
     131           0 :                                 return PSFS_ERR_FATAL;
     132             :                         }
     133          37 :                         desired -= data->strm.avail_in; /* desired becomes what we consumed this round through */
     134          37 :                         data->strm.next_in = data->inbuf;
     135          37 :                         data->strm.avail_in = 0;
     136          37 :                         consumed += desired;
     137          37 :                         bin += desired;
     138             : 
     139          37 :                         if (data->strm.avail_out < data->outbuf_len) {
     140             :                                 php_stream_bucket *out_bucket;
     141          36 :                                 size_t bucketlen = data->outbuf_len - data->strm.avail_out;
     142          36 :                                 out_bucket = php_stream_bucket_new(stream, estrndup(data->outbuf, bucketlen), bucketlen, 1, 0 TSRMLS_CC);
     143          36 :                                 php_stream_bucket_append(buckets_out, out_bucket TSRMLS_CC);
     144          36 :                                 data->strm.avail_out = data->outbuf_len;
     145          36 :                                 data->strm.next_out = data->outbuf;
     146          36 :                                 exit_status = PSFS_PASS_ON;
     147           1 :                         } else if (status == BZ_STREAM_END && data->strm.avail_out >= data->outbuf_len) {
     148             :                                 /* no more data to decompress, and nothing was spat out */
     149           0 :                                 php_stream_bucket_delref(bucket TSRMLS_CC);
     150           0 :                                 return PSFS_PASS_ON;
     151             :                         }
     152             :                 }
     153             : 
     154          23 :                 php_stream_bucket_delref(bucket TSRMLS_CC);
     155             :         }
     156             : 
     157          59 :         if ((data->status == PHP_BZ2_RUNNING) && (flags & PSFS_FLAG_FLUSH_CLOSE)) {
     158             :                 /* Spit it out! */
     159           0 :                 status = BZ_OK;
     160           0 :                 while (status == BZ_OK) {
     161           0 :                         status = BZ2_bzDecompress(&(data->strm));
     162           0 :                         if (data->strm.avail_out < data->outbuf_len) {
     163           0 :                                 size_t bucketlen = data->outbuf_len - data->strm.avail_out;
     164             : 
     165           0 :                                 bucket = php_stream_bucket_new(stream, estrndup(data->outbuf, bucketlen), bucketlen, 1, 0 TSRMLS_CC);
     166           0 :                                 php_stream_bucket_append(buckets_out, bucket TSRMLS_CC);
     167           0 :                                 data->strm.avail_out = data->outbuf_len;
     168           0 :                                 data->strm.next_out = data->outbuf;
     169           0 :                                 exit_status = PSFS_PASS_ON;
     170           0 :                         } else if (status == BZ_OK) {
     171           0 :                                 break;
     172             :                         }
     173             :                 }
     174             :         }
     175             : 
     176          59 :         if (bytes_consumed) {
     177          34 :                 *bytes_consumed = consumed;
     178             :         }
     179             : 
     180          59 :         return exit_status;
     181             : }
     182             : 
     183          23 : static void php_bz2_decompress_dtor(php_stream_filter *thisfilter TSRMLS_DC)
     184             : {
     185          23 :         if (thisfilter && thisfilter->abstract) {
     186          23 :                 php_bz2_filter_data *data = thisfilter->abstract;
     187          23 :                 if (data->status == PHP_BZ2_RUNNING) {
     188           0 :                         BZ2_bzDecompressEnd(&(data->strm));
     189             :                 }
     190          23 :                 pefree(data->inbuf, data->persistent);
     191          23 :                 pefree(data->outbuf, data->persistent);
     192          23 :                 pefree(data, data->persistent);
     193             :         }
     194          23 : }
     195             : 
     196             : static php_stream_filter_ops php_bz2_decompress_ops = {
     197             :         php_bz2_decompress_filter,
     198             :         php_bz2_decompress_dtor,
     199             :         "bzip2.decompress"
     200             : };
     201             : /* }}} */
     202             : 
     203             : /* {{{ bzip2.compress filter implementation */
     204             : 
     205          64 : static php_stream_filter_status_t php_bz2_compress_filter(
     206             :         php_stream *stream,
     207             :         php_stream_filter *thisfilter,
     208             :         php_stream_bucket_brigade *buckets_in,
     209             :         php_stream_bucket_brigade *buckets_out,
     210             :         size_t *bytes_consumed,
     211             :         int flags
     212             :         TSRMLS_DC)
     213             : {
     214             :         php_bz2_filter_data *data;
     215             :         php_stream_bucket *bucket;
     216          64 :         size_t consumed = 0;
     217             :         int status;
     218          64 :         php_stream_filter_status_t exit_status = PSFS_FEED_ME;
     219             : 
     220          64 :         if (!thisfilter || !thisfilter->abstract) {
     221             :                 /* Should never happen */
     222           0 :                 return PSFS_ERR_FATAL;
     223             :         }
     224             : 
     225          64 :         data = (php_bz2_filter_data *)(thisfilter->abstract);
     226             : 
     227         152 :         while (buckets_in->head) {
     228          24 :                 size_t bin = 0, desired;
     229             : 
     230          24 :                 bucket = php_stream_bucket_make_writeable(buckets_in->head TSRMLS_CC);
     231             : 
     232          82 :                 while (bin < bucket->buflen) {
     233          34 :                         desired = bucket->buflen - bin;
     234          34 :                         if (desired > data->inbuf_len) {
     235          10 :                                 desired = data->inbuf_len;
     236             :                         }
     237          34 :                         memcpy(data->strm.next_in, bucket->buf + bin, desired);
     238          34 :                         data->strm.avail_in = desired;
     239             : 
     240          34 :                         status = BZ2_bzCompress(&(data->strm), flags & PSFS_FLAG_FLUSH_CLOSE ? BZ_FINISH : (flags & PSFS_FLAG_FLUSH_INC ? BZ_FLUSH : BZ_RUN));
     241          34 :                         if (status != BZ_RUN_OK && status != BZ_FLUSH_OK && status != BZ_FINISH_OK) {
     242             :                                 /* Something bad happened */
     243           0 :                                 php_stream_bucket_delref(bucket TSRMLS_CC);
     244           0 :                                 return PSFS_ERR_FATAL;
     245             :                         }
     246          34 :                         desired -= data->strm.avail_in; /* desired becomes what we consumed this round through */
     247          34 :                         data->strm.next_in = data->inbuf;
     248          34 :                         data->strm.avail_in = 0;
     249          34 :                         consumed += desired;
     250          34 :                         bin += desired;
     251             : 
     252          34 :                         if (data->strm.avail_out < data->outbuf_len) {
     253             :                                 php_stream_bucket *out_bucket;
     254           0 :                                 size_t bucketlen = data->outbuf_len - data->strm.avail_out;
     255             : 
     256           0 :                                 out_bucket = php_stream_bucket_new(stream, estrndup(data->outbuf, bucketlen), bucketlen, 1, 0 TSRMLS_CC);
     257           0 :                                 php_stream_bucket_append(buckets_out, out_bucket TSRMLS_CC);
     258           0 :                                 data->strm.avail_out = data->outbuf_len;
     259           0 :                                 data->strm.next_out = data->outbuf;
     260           0 :                                 exit_status = PSFS_PASS_ON;
     261             :                         }
     262             :                 }
     263          24 :                 php_stream_bucket_delref(bucket TSRMLS_CC);
     264             :         }
     265             : 
     266          64 :         if (flags & PSFS_FLAG_FLUSH_CLOSE) {
     267             :                 /* Spit it out! */
     268          24 :                 status = BZ_FINISH_OK;
     269          73 :                 while (status == BZ_FINISH_OK) {
     270          25 :                         status = BZ2_bzCompress(&(data->strm), BZ_FINISH);
     271          25 :                         if (data->strm.avail_out < data->outbuf_len) {
     272          25 :                                 size_t bucketlen = data->outbuf_len - data->strm.avail_out;
     273             : 
     274          25 :                                 bucket = php_stream_bucket_new(stream, estrndup(data->outbuf, bucketlen), bucketlen, 1, 0 TSRMLS_CC);
     275          25 :                                 php_stream_bucket_append(buckets_out, bucket TSRMLS_CC);
     276          25 :                                 data->strm.avail_out = data->outbuf_len;
     277          25 :                                 data->strm.next_out = data->outbuf;
     278          25 :                                 exit_status = PSFS_PASS_ON;
     279             :                         }
     280             :                 }
     281             :         }
     282             : 
     283          64 :         if (bytes_consumed) {
     284          41 :                 *bytes_consumed = consumed;
     285             :         }
     286          64 :         return exit_status;
     287             : }
     288             : 
     289          24 : static void php_bz2_compress_dtor(php_stream_filter *thisfilter TSRMLS_DC)
     290             : {
     291          24 :         if (thisfilter && thisfilter->abstract) {
     292          24 :                 php_bz2_filter_data *data = thisfilter->abstract;
     293          24 :                 BZ2_bzCompressEnd(&(data->strm));
     294          24 :                 pefree(data->inbuf, data->persistent);
     295          24 :                 pefree(data->outbuf, data->persistent);
     296          24 :                 pefree(data, data->persistent);
     297             :         }
     298          24 : }
     299             : 
     300             : static php_stream_filter_ops php_bz2_compress_ops = {
     301             :         php_bz2_compress_filter,
     302             :         php_bz2_compress_dtor,
     303             :         "bzip2.compress"
     304             : };
     305             : 
     306             : /* }}} */
     307             : 
     308             : /* {{{ bzip2.* common factory */
     309             : 
     310          47 : static php_stream_filter *php_bz2_filter_create(const char *filtername, zval *filterparams, int persistent TSRMLS_DC)
     311             : {
     312          47 :         php_stream_filter_ops *fops = NULL;
     313             :         php_bz2_filter_data *data;
     314          47 :         int status = BZ_OK;
     315             : 
     316             :         /* Create this filter */
     317          47 :         data = pecalloc(1, sizeof(php_bz2_filter_data), persistent);
     318          47 :         if (!data) {
     319           0 :                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed allocating %zu bytes", sizeof(php_bz2_filter_data));
     320           0 :                 return NULL;
     321             :         }
     322             : 
     323             :         /* Circular reference */
     324          47 :         data->strm.opaque = (void *) data;
     325             : 
     326          47 :         data->strm.bzalloc = php_bz2_alloc;
     327          47 :         data->strm.bzfree = php_bz2_free;
     328          47 :         data->persistent = persistent;
     329          47 :         data->strm.avail_out = data->outbuf_len = data->inbuf_len = 2048;
     330          47 :         data->strm.next_in = data->inbuf = (char *) pemalloc(data->inbuf_len, persistent);
     331          47 :         if (!data->inbuf) {
     332           0 :                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed allocating %zu bytes", data->inbuf_len);
     333           0 :                 pefree(data, persistent);
     334           0 :                 return NULL;
     335             :         }
     336          47 :         data->strm.avail_in = 0;
     337          47 :         data->strm.next_out = data->outbuf = (char *) pemalloc(data->outbuf_len, persistent);
     338          47 :         if (!data->outbuf) {
     339           0 :                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed allocating %zu bytes", data->outbuf_len);
     340           0 :                 pefree(data->inbuf, persistent);
     341           0 :                 pefree(data, persistent);
     342           0 :                 return NULL;
     343             :         }
     344             : 
     345          47 :         if (strcasecmp(filtername, "bzip2.decompress") == 0) {
     346          23 :                 data->small_footprint = 0;
     347          23 :                 data->expect_concatenated = 0;
     348             : 
     349          23 :                 if (filterparams) {
     350           0 :                         zval **tmpzval = NULL;
     351             : 
     352           0 :                         if (Z_TYPE_P(filterparams) == IS_ARRAY || Z_TYPE_P(filterparams) == IS_OBJECT) {
     353             : 
     354           0 :                                 if (SUCCESS == zend_hash_find(HASH_OF(filterparams), "concatenated", sizeof("concatenated"), (void **) &tmpzval) ) {
     355             :                                         zval tmp, *tmp2;
     356             : 
     357           0 :                                         tmp = **tmpzval;
     358             :                                         zval_copy_ctor(&tmp);
     359           0 :                                         tmp2 = &tmp;
     360           0 :                                         convert_to_boolean_ex(&tmp2);
     361           0 :                                         data->expect_concatenated = Z_LVAL(tmp);
     362           0 :                                         tmpzval = NULL;
     363             :                                 }
     364             : 
     365           0 :                                 zend_hash_find(HASH_OF(filterparams), "small", sizeof("small"), (void **) &tmpzval);
     366             :                         } else {
     367           0 :                                 tmpzval = &filterparams;
     368             :                         }
     369             : 
     370           0 :                         if (tmpzval) {
     371             :                                 zval tmp, *tmp2;
     372             : 
     373           0 :                                 tmp = **tmpzval;
     374             :                                 zval_copy_ctor(&tmp);
     375           0 :                                 tmp2 = &tmp;
     376           0 :                                 convert_to_boolean_ex(&tmp2);
     377           0 :                                 data->small_footprint = Z_LVAL(tmp);
     378             :                         }
     379             :                 }
     380             : 
     381          23 :                 data->status = PHP_BZ2_UNITIALIZED;
     382          23 :                 fops = &php_bz2_decompress_ops;
     383          24 :         } else if (strcasecmp(filtername, "bzip2.compress") == 0) {
     384          24 :                 int blockSize100k = PHP_BZ2_FILTER_DEFAULT_BLOCKSIZE;
     385          24 :                 int workFactor = PHP_BZ2_FILTER_DEFAULT_WORKFACTOR;
     386             : 
     387          24 :                 if (filterparams) {
     388             :                         zval **tmpzval;
     389             : 
     390           0 :                         if (Z_TYPE_P(filterparams) == IS_ARRAY || Z_TYPE_P(filterparams) == IS_OBJECT) {
     391           0 :                                 if (zend_hash_find(HASH_OF(filterparams), "blocks", sizeof("blocks"), (void**) &tmpzval) == SUCCESS) {
     392             :                                         /* How much memory to allocate (1 - 9) x 100kb */
     393             :                                         zval tmp;
     394             :         
     395           0 :                                         tmp = **tmpzval;
     396             :                                         zval_copy_ctor(&tmp);
     397           0 :                                         convert_to_long(&tmp);
     398           0 :                                         if (Z_LVAL(tmp) < 1 || Z_LVAL(tmp) > 9) {
     399           0 :                                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid parameter given for number of blocks to allocate. (%ld)", Z_LVAL_PP(tmpzval));
     400             :                                         } else {
     401           0 :                                                 blockSize100k = Z_LVAL(tmp);
     402             :                                         }
     403             :                                 }
     404             : 
     405           0 :                                 if (zend_hash_find(HASH_OF(filterparams), "work", sizeof("work"), (void**) &tmpzval) == SUCCESS) {
     406             :                                         /* Work Factor (0 - 250) */
     407             :                                         zval tmp;
     408             :         
     409           0 :                                         tmp = **tmpzval;
     410             :                                         zval_copy_ctor(&tmp);
     411           0 :                                         convert_to_long(&tmp);
     412             : 
     413           0 :                                         if (Z_LVAL(tmp) < 0 || Z_LVAL(tmp) > 250) {
     414           0 :                                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid parameter given for work factor. (%ld)", Z_LVAL(tmp));
     415             :                                         } else {
     416           0 :                                                 workFactor = Z_LVAL(tmp);
     417             :                                         }
     418             :                                 }
     419             :                         }
     420             :                 }
     421             : 
     422          24 :                 status = BZ2_bzCompressInit(&(data->strm), blockSize100k, 0, workFactor);
     423          24 :                 fops = &php_bz2_compress_ops;
     424             :         } else {
     425           0 :                 status = BZ_DATA_ERROR;
     426             :         }
     427             : 
     428          47 :         if (status != BZ_OK) {
     429             :                 /* Unspecified (probably strm) error, let stream-filter error do its own whining */
     430           0 :                 pefree(data->strm.next_in, persistent);
     431           0 :                 pefree(data->strm.next_out, persistent);
     432           0 :                 pefree(data, persistent);
     433           0 :                 return NULL;
     434             :         }
     435             : 
     436          47 :         return php_stream_filter_alloc(fops, data, persistent);
     437             : }
     438             : 
     439             : php_stream_filter_factory php_bz2_filter_factory = {
     440             :         php_bz2_filter_create
     441             : };
     442             : /* }}} */
     443             : 
     444             : /*
     445             :  * Local variables:
     446             :  * tab-width: 4
     447             :  * c-basic-offset: 4
     448             :  * End:
     449             :  * vim600: sw=4 ts=4 fdm=marker
     450             :  * vim<600: sw=4 ts=4
     451             :  */

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Generated at Tue, 22 Jul 2014 01:33:07 +0000 (9 days ago)

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