git.m6w6.name Git - m6w6/ext-http/blob - http_encoding_api.c

   1 /*
   2     +--------------------------------------------------------------------+
   3     | PECL :: http                                                       |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted provided that the conditions mentioned |
   7     | in the accompanying LICENSE file are met.                          |
   8     +--------------------------------------------------------------------+
   9     | Copyright (c) 2004-2006, Michael Wallner <mike@php.net>            |
  10     +--------------------------------------------------------------------+
  11 */
  12
  13 /* $Id$ */
  14
  15 #define HTTP_WANT_ZLIB
  16 #include "php_http.h"
  17
  18 #include "php_http_api.h"
  19 #include "php_http_encoding_api.h"
  20 #include "php_http_send_api.h"
  21 #include "php_http_headers_api.h"
  22
  23 /* {{{ */
  24 #ifdef HTTP_HAVE_ZLIB
  25 PHP_MINIT_FUNCTION(http_encoding)
  26 {
  27         HTTP_LONG_CONSTANT("HTTP_DEFLATE_LEVEL_DEF", HTTP_DEFLATE_LEVEL_DEF);
  28         HTTP_LONG_CONSTANT("HTTP_DEFLATE_LEVEL_MIN", HTTP_DEFLATE_LEVEL_MIN);
  29         HTTP_LONG_CONSTANT("HTTP_DEFLATE_LEVEL_MAX", HTTP_DEFLATE_LEVEL_MAX);
  30         HTTP_LONG_CONSTANT("HTTP_DEFLATE_TYPE_ZLIB", HTTP_DEFLATE_TYPE_ZLIB);
  31         HTTP_LONG_CONSTANT("HTTP_DEFLATE_TYPE_GZIP", HTTP_DEFLATE_TYPE_GZIP);
  32         HTTP_LONG_CONSTANT("HTTP_DEFLATE_TYPE_RAW", HTTP_DEFLATE_TYPE_RAW);
  33         HTTP_LONG_CONSTANT("HTTP_DEFLATE_STRATEGY_DEF", HTTP_DEFLATE_STRATEGY_DEF);
  34         HTTP_LONG_CONSTANT("HTTP_DEFLATE_STRATEGY_FILT", HTTP_DEFLATE_STRATEGY_FILT);
  35         HTTP_LONG_CONSTANT("HTTP_DEFLATE_STRATEGY_HUFF", HTTP_DEFLATE_STRATEGY_HUFF);
  36         HTTP_LONG_CONSTANT("HTTP_DEFLATE_STRATEGY_RLE", HTTP_DEFLATE_STRATEGY_RLE);
  37         HTTP_LONG_CONSTANT("HTTP_DEFLATE_STRATEGY_FIXED", HTTP_DEFLATE_STRATEGY_FIXED);
  38
  39         HTTP_LONG_CONSTANT("HTTP_ENCODING_STREAM_FLUSH_NONE", HTTP_ENCODING_STREAM_FLUSH_NONE);
  40         HTTP_LONG_CONSTANT("HTTP_ENCODING_STREAM_FLUSH_SYNC", HTTP_ENCODING_STREAM_FLUSH_SYNC);
  41         HTTP_LONG_CONSTANT("HTTP_ENCODING_STREAM_FLUSH_FULL", HTTP_ENCODING_STREAM_FLUSH_FULL);
  42
  43         return SUCCESS;
  44 }
  45
  46 PHP_RINIT_FUNCTION(http_encoding)
  47 {
  48         if (HTTP_G->send.inflate.start_auto) {
  49                 php_ob_set_internal_handler(_http_ob_inflatehandler, HTTP_INFLATE_BUFFER_SIZE, "http inflate", 0 TSRMLS_CC);
  50         }
  51         if (HTTP_G->send.deflate.start_auto) {
  52                 php_ob_set_internal_handler(_http_ob_deflatehandler, HTTP_DEFLATE_BUFFER_SIZE, "http deflate", 0 TSRMLS_CC);
  53         }
  54         return SUCCESS;
  55 }
  56
  57 PHP_RSHUTDOWN_FUNCTION(http_encoding)
  58 {
  59         if (HTTP_G->send.deflate.stream) {
  60                 http_encoding_deflate_stream_free((http_encoding_stream **) &HTTP_G->send.deflate.stream);
  61         }
  62         if (HTTP_G->send.inflate.stream) {
  63                 http_encoding_inflate_stream_free((http_encoding_stream **) &HTTP_G->send.inflate.stream);
  64         }
  65         return SUCCESS;
  66 }
  67 #endif
  68 /* }}} */
  69
  70 /* {{{ eol_match(char **, int *) */
  71 static inline int eol_match(char **line, int *eol_len)
  72 {
  73         char *ptr = *line;
  74
  75         while (' ' == *ptr) ++ptr;
  76
  77         if (ptr == http_locate_eol(*line, eol_len)) {
  78                 *line = ptr;
  79                 return 1;
  80         } else {
  81                 return 0;
  82         }
  83 }
  84 /* }}} */
  85
  86 /* {{{ char *http_encoding_dechunk(char *, size_t, char **, size_t *) */
  87 PHP_HTTP_API const char *_http_encoding_dechunk(const char *encoded, size_t encoded_len, char **decoded, size_t *decoded_len TSRMLS_DC)
  88 {
  89         int eol_len = 0;
  90         char *n_ptr = NULL;
  91         const char *e_ptr = encoded;
  92
  93         *decoded_len = 0;
  94         *decoded = ecalloc(1, encoded_len);
  95
  96         while ((encoded + encoded_len - e_ptr) > 0) {
  97                 ulong chunk_len = 0, rest;
  98
  99                 chunk_len = strtoul(e_ptr, &n_ptr, 16);
 100
 101                 /* we could not read in chunk size */
 102                 if (n_ptr == e_ptr) {
 103                         /*
 104                          * if this is the first turn and there doesn't seem to be a chunk
 105                          * size at the begining of the body, do not fail on apparently
 106                          * not encoded data and return a copy
 107                          */
 108                         if (e_ptr == encoded) {
 109                                 http_error(HE_NOTICE, HTTP_E_ENCODING, "Data does not seem to be chunked encoded");
 110                                 memcpy(*decoded, encoded, encoded_len);
 111                                 *decoded_len = encoded_len;
 112                                 return encoded + encoded_len;
 113                         } else {
 114                                 efree(*decoded);
 115                                 http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Expected chunk size at pos %tu of %zu but got trash", n_ptr - encoded, encoded_len);
 116                                 return NULL;
 117                         }
 118                 }
 119
 120                 /* reached the end */
 121                 if (!chunk_len) {
 122                         /* move over '0' chunked encoding terminator */
 123                         while (*e_ptr == '0') ++e_ptr;
 124                         break;
 125                 }
 126
 127                 /* there should be CRLF after the chunk size, but we'll ignore SP+ too */
 128                 if (*n_ptr && !eol_match(&n_ptr, &eol_len)) {
 129                         if (eol_len == 2) {
 130                                 http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Expected CRLF at pos %tu of %zu but got 0x%02X 0x%02X", n_ptr - encoded, encoded_len, *n_ptr, *(n_ptr + 1));
 131                         } else {
 132                                 http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Expected LF at pos %tu of %zu but got 0x%02X", n_ptr - encoded, encoded_len, *n_ptr);
 133                         }
 134                 }
 135                 n_ptr += eol_len;
 136
 137                 /* chunk size pretends more data than we actually got, so it's probably a truncated message */
 138                 if (chunk_len > (rest = encoded + encoded_len - n_ptr)) {
 139                         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Truncated message: chunk size %lu exceeds remaining data size %lu at pos %tu of %zu", chunk_len, rest, n_ptr - encoded, encoded_len);
 140                         chunk_len = rest;
 141                 }
 142
 143                 /* copy the chunk */
 144                 memcpy(*decoded + *decoded_len, n_ptr, chunk_len);
 145                 *decoded_len += chunk_len;
 146
 147                 if (chunk_len == rest) {
 148                         e_ptr = n_ptr + chunk_len;
 149                         break;
 150                 } else {
 151                         /* advance to next chunk */
 152                         e_ptr = n_ptr + chunk_len + eol_len;
 153                 }
 154         }
 155
 156         return e_ptr;
 157 }
 158 /* }}} */
 159
 160 /* {{{ int http_encoding_response_start(size_t) */
 161 PHP_HTTP_API int _http_encoding_response_start(size_t content_length, zend_bool ignore_http_ohandler TSRMLS_DC)
 162 {
 163         int response = HTTP_G->send.deflate.response;
 164         int ohandler = php_ob_handler_used("ob_gzhandler" TSRMLS_CC) || php_ob_handler_used("zlib output compression" TSRMLS_CC);
 165
 166         if (!ohandler && !ignore_http_ohandler) {
 167                 ohandler = php_ob_handler_used("ob_deflatehandler" TSRMLS_CC) || php_ob_handler_used("http deflate" TSRMLS_CC);
 168         }
 169
 170         if (response && !ohandler) {
 171 #ifdef HTTP_HAVE_ZLIB
 172                 HashTable *selected;
 173                 zval zsupported;
 174
 175                 HTTP_G->send.deflate.encoding = 0;
 176
 177                 INIT_PZVAL(&zsupported);
 178                 array_init(&zsupported);
 179                 add_next_index_stringl(&zsupported, "gzip", lenof("gzip"), 1);
 180                 add_next_index_stringl(&zsupported, "x-gzip", lenof("x-gzip"), 1);
 181                 add_next_index_stringl(&zsupported, "deflate", lenof("deflate"), 1);
 182
 183                 if ((selected = http_negotiate_encoding(&zsupported))) {
 184                         STATUS hs = FAILURE;
 185                         char *encoding = NULL;
 186                         ulong idx;
 187
 188                         if (HASH_KEY_IS_STRING == zend_hash_get_current_key(selected, &encoding, &idx, 0) && encoding) {
 189                                 if (!strcmp(encoding, "gzip") || !strcmp(encoding, "x-gzip")) {
 190                                         if (SUCCESS == (hs = http_send_header_string("Content-Encoding: gzip"))) {
 191                                                 HTTP_G->send.deflate.encoding = HTTP_ENCODING_GZIP;
 192                                         }
 193                                 } else if (!strcmp(encoding, "deflate")) {
 194                                         if (SUCCESS == (hs = http_send_header_string("Content-Encoding: deflate"))) {
 195                                                 HTTP_G->send.deflate.encoding = HTTP_ENCODING_DEFLATE;
 196                                         }
 197                                 }
 198                                 if (SUCCESS == hs) {
 199                                         http_send_header_string("Vary: Accept-Encoding");
 200                                 }
 201                         }
 202
 203                         zend_hash_destroy(selected);
 204                         FREE_HASHTABLE(selected);
 205                 }
 206
 207                 zval_dtor(&zsupported);
 208 #else
 209                 HTTP_G->send.deflate.encoding = 0;
 210                 php_start_ob_buffer_named("ob_gzhandler", 0, 0 TSRMLS_CC);
 211 #endif /* HTTP_HAVE_ZLIB */
 212         } else if (content_length && !ohandler) {
 213                 /* emit a content-length header */
 214                 char cl_header_str[128];
 215                 size_t cl_header_len;
 216                 cl_header_len = snprintf(cl_header_str, lenof(cl_header_str), "Content-Length: %zu", content_length);
 217                 http_send_header_string_ex(cl_header_str, cl_header_len, 1);
 218         } else {
 219                 HTTP_G->send.deflate.encoding = 0;
 220         }
 221
 222         return HTTP_G->send.deflate.encoding;
 223 }
 224 /* }}} */
 225
 226 #ifdef HTTP_HAVE_ZLIB
 227
 228 /* {{{ inline int http_inflate_rounds */
 229 static inline int http_inflate_rounds(z_stream *Z, int flush, char **buf, size_t *len)
 230 {
 231         int status = 0, round = 0;
 232         phpstr buffer;
 233
 234         *buf = NULL;
 235         *len = 0;
 236
 237         phpstr_init_ex(&buffer, Z->avail_in, PHPSTR_INIT_PREALLOC);
 238
 239         do {
 240                 if (PHPSTR_NOMEM == phpstr_resize_ex(&buffer, buffer.size, 0, 1)) {
 241                         status = Z_MEM_ERROR;
 242                 } else {
 243                         Z->avail_out = buffer.free;
 244                         Z->next_out = (Bytef *) buffer.data + buffer.used;
 245 #if 0
 246                         fprintf(stderr, "\n%3d: %3d PRIOR: size=%7lu,\tfree=%7lu,\tused=%7lu,\tavail_in=%7lu,\tavail_out=%7lu\n", round, status, buffer.size, buffer.free, buffer.used, Z->avail_in, Z->avail_out);
 247 #endif
 248                         status = inflate(Z, flush);
 249
 250                         buffer.used += buffer.free - Z->avail_out;
 251                         buffer.free = Z->avail_out;
 252 #if 0
 253                         fprintf(stderr, "%3d: %3d AFTER: size=%7lu,\tfree=%7lu,\tused=%7lu,\tavail_in=%7lu,\tavail_out=%7lu\n", round, status, buffer.size, buffer.free, buffer.used, Z->avail_in, Z->avail_out);
 254 #endif
 255                         HTTP_INFLATE_BUFFER_SIZE_ALIGN(buffer.size);
 256                 }
 257         } while ((Z_BUF_ERROR == status || (Z_OK == status && Z->avail_in)) && ++round < HTTP_INFLATE_ROUNDS);
 258
 259         if (status == Z_OK || status == Z_STREAM_END) {
 260                 phpstr_shrink(&buffer);
 261                 phpstr_fix(&buffer);
 262                 *buf = buffer.data;
 263                 *len = buffer.used;
 264         } else {
 265                 phpstr_dtor(&buffer);
 266         }
 267
 268         return status;
 269 }
 270 /* }}} */
 271
 272 /* {{{ STATUS http_encoding_deflate(int, char *, size_t, char **, size_t *) */
 273 PHP_HTTP_API STATUS _http_encoding_deflate(int flags, const char *data, size_t data_len, char **encoded, size_t *encoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 274 {
 275         int status, level, wbits, strategy;
 276         z_stream Z;
 277
 278         HTTP_DEFLATE_LEVEL_SET(flags, level);
 279         HTTP_DEFLATE_WBITS_SET(flags, wbits);
 280         HTTP_DEFLATE_STRATEGY_SET(flags, strategy);
 281
 282         memset(&Z, 0, sizeof(z_stream));
 283         *encoded = NULL;
 284         *encoded_len = 0;
 285
 286         status = deflateInit2(&Z, level, Z_DEFLATED, wbits, MAX_MEM_LEVEL, strategy);
 287         if (Z_OK == status) {
 288                 *encoded_len = HTTP_DEFLATE_BUFFER_SIZE_GUESS(data_len);
 289                 *encoded = emalloc_rel(*encoded_len);
 290
 291                 Z.next_in = (Bytef *) data;
 292                 Z.next_out = (Bytef *) *encoded;
 293                 Z.avail_in = data_len;
 294                 Z.avail_out = *encoded_len;
 295
 296                 status = deflate(&Z, Z_FINISH);
 297                 deflateEnd(&Z);
 298
 299                 if (Z_STREAM_END == status) {
 300                         /* size buffer down to actual length */
 301                         *encoded = erealloc_rel(*encoded, Z.total_out + 1);
 302                         (*encoded)[*encoded_len = Z.total_out] = '\0';
 303                         return SUCCESS;
 304                 } else {
 305                         STR_SET(*encoded, NULL);
 306                         *encoded_len = 0;
 307                 }
 308         }
 309
 310         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Could not deflate data: %s", zError(status));
 311         return FAILURE;
 312 }
 313 /* }}} */
 314
 315 /* {{{ STATUS http_encoding_inflate(char *, size_t, char **, size_t) */
 316 PHP_HTTP_API STATUS _http_encoding_inflate(const char *data, size_t data_len, char **decoded, size_t *decoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 317 {
 318         z_stream Z;
 319         int status, wbits = HTTP_WINDOW_BITS_ANY;
 320
 321         memset(&Z, 0, sizeof(z_stream));
 322
 323 retry_raw_inflate:
 324         status = inflateInit2(&Z, wbits);
 325         if (Z_OK == status) {
 326                 Z.next_in = (Bytef *) data;
 327                 Z.avail_in = data_len;
 328
 329                 switch (status = http_inflate_rounds(&Z, Z_NO_FLUSH, decoded, decoded_len)) {
 330                         case Z_OK:
 331                         case Z_STREAM_END:
 332                                 inflateEnd(&Z);
 333                                 return SUCCESS;
 334
 335                         case Z_DATA_ERROR:
 336                                 /* raw deflated data? */
 337                                 if (HTTP_WINDOW_BITS_ANY == wbits) {
 338                                         inflateEnd(&Z);
 339                                         wbits = HTTP_WINDOW_BITS_RAW;
 340                                         goto retry_raw_inflate;
 341                                 }
 342                 }
 343                 inflateEnd(&Z);
 344         }
 345
 346         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Could not inflate data: %s", zError(status));
 347         return FAILURE;
 348 }
 349 /* }}} */
 350
 351 /* {{{ http_encoding_stream *_http_encoding_deflate_stream_init(http_encoding_stream *, int) */
 352 PHP_HTTP_API http_encoding_stream *_http_encoding_deflate_stream_init(http_encoding_stream *s, int flags ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 353 {
 354         int status, level, wbits, strategy, free_stream;
 355
 356         if ((free_stream = !s)) {
 357                 s = pemalloc_rel(sizeof(http_encoding_stream), (flags & HTTP_ENCODING_STREAM_PERSISTENT));
 358         }
 359         memset(s, 0, sizeof(http_encoding_stream));
 360         s->flags = flags;
 361
 362         HTTP_DEFLATE_LEVEL_SET(flags, level);
 363         HTTP_DEFLATE_WBITS_SET(flags, wbits);
 364         HTTP_DEFLATE_STRATEGY_SET(flags, strategy);
 365
 366         if (Z_OK == (status = deflateInit2(&s->stream, level, Z_DEFLATED, wbits, MAX_MEM_LEVEL, strategy))) {
 367                 int p = (flags & HTTP_ENCODING_STREAM_PERSISTENT) ? PHPSTR_INIT_PERSISTENT:0;
 368
 369                 if ((s->stream.opaque = phpstr_init_ex(NULL, HTTP_DEFLATE_BUFFER_SIZE, p))) {
 370                         return s;
 371                 }
 372                 deflateEnd(&s->stream);
 373                 status = Z_MEM_ERROR;
 374         }
 375
 376         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Failed to initialize deflate encoding stream: %s", zError(status));
 377         if (free_stream) {
 378                 efree(s);
 379         }
 380         return NULL;
 381 }
 382 /* }}} */
 383
 384 /* {{{ http_encoding_stream *http_encoding_inflate_stream_init(http_encoding_stream *, int) */
 385 PHP_HTTP_API http_encoding_stream *_http_encoding_inflate_stream_init(http_encoding_stream *s, int flags ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 386 {
 387         int status, wbits, free_stream;
 388
 389         if ((free_stream = !s)) {
 390                 s = pemalloc_rel(sizeof(http_encoding_stream), (flags & HTTP_ENCODING_STREAM_PERSISTENT));
 391         }
 392         memset(s, 0, sizeof(http_encoding_stream));
 393         s->flags = flags;
 394
 395         HTTP_INFLATE_WBITS_SET(flags, wbits);
 396
 397         if (Z_OK == (status = inflateInit2(&s->stream, wbits))) {
 398                 int p = (flags & HTTP_ENCODING_STREAM_PERSISTENT) ? PHPSTR_INIT_PERSISTENT:0;
 399
 400                 if ((s->stream.opaque = phpstr_init_ex(NULL, HTTP_DEFLATE_BUFFER_SIZE, p))) {
 401                         return s;
 402                 }
 403                 inflateEnd(&s->stream);
 404                 status = Z_MEM_ERROR;
 405         }
 406
 407         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Failed to initialize inflate stream: %s", zError(status));
 408         if (free_stream) {
 409                 efree(s);
 410         }
 411         return NULL;
 412 }
 413 /* }}} */
 414
 415 /* {{{ STATUS http_encoding_deflate_stream_update(http_encoding_stream *, char *, size_t, char **, size_t *) */
 416 PHP_HTTP_API STATUS _http_encoding_deflate_stream_update(http_encoding_stream *s, const char *data, size_t data_len, char **encoded, size_t *encoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 417 {
 418         int status;
 419
 420         /* append input to our buffer */
 421         phpstr_append(PHPSTR(s->stream.opaque), data, data_len);
 422
 423         s->stream.next_in = (Bytef *) PHPSTR_VAL(s->stream.opaque);
 424         s->stream.avail_in = PHPSTR_LEN(s->stream.opaque);
 425
 426         /* deflate */
 427         *encoded_len = HTTP_DEFLATE_BUFFER_SIZE_GUESS(data_len);
 428         *encoded = emalloc_rel(*encoded_len);
 429         s->stream.avail_out = *encoded_len;
 430         s->stream.next_out = (Bytef *) *encoded;
 431
 432         switch (status = deflate(&s->stream, HTTP_ENCODING_STREAM_FLUSH_FLAG(s->flags))) {
 433                 case Z_OK:
 434                 case Z_STREAM_END:
 435                         /* cut processed chunk off the buffer */
 436                         if (s->stream.avail_in) {
 437                                 phpstr_cut(PHPSTR(s->stream.opaque), 0, PHPSTR_LEN(s->stream.opaque) - s->stream.avail_in);
 438                         } else {
 439                                 phpstr_reset(PHPSTR(s->stream.opaque));
 440                         }
 441
 442                         /* size buffer down to actual size */
 443                         *encoded_len -= s->stream.avail_out;
 444                         *encoded = erealloc_rel(*encoded, *encoded_len + 1);
 445                         (*encoded)[*encoded_len] = '\0';
 446                         return SUCCESS;
 447         }
 448
 449         STR_SET(*encoded, NULL);
 450         *encoded_len = 0;
 451         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Failed to update deflate stream: %s", zError(status));
 452         return FAILURE;
 453 }
 454 /* }}} */
 455
 456 /* {{{ STATUS http_encoding_inflate_stream_update(http_encoding_stream *, char *, size_t, char **, size_t *) */
 457 PHP_HTTP_API STATUS _http_encoding_inflate_stream_update(http_encoding_stream *s, const char *data, size_t data_len, char **decoded, size_t *decoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 458 {
 459         int status;
 460
 461         /* append input to buffer */
 462         phpstr_append(PHPSTR(s->stream.opaque), data, data_len);
 463
 464 retry_raw_inflate:
 465         s->stream.next_in = (Bytef *) PHPSTR_VAL(s->stream.opaque);
 466         s->stream.avail_in = PHPSTR_LEN(s->stream.opaque);
 467
 468         switch (status = http_inflate_rounds(&s->stream, HTTP_ENCODING_STREAM_FLUSH_FLAG(s->flags), decoded, decoded_len)) {
 469                 case Z_OK:
 470                 case Z_STREAM_END:
 471                         /* cut off */
 472                         if (s->stream.avail_in) {
 473                                 phpstr_cut(PHPSTR(s->stream.opaque), 0, PHPSTR_LEN(s->stream.opaque) - s->stream.avail_in);
 474                         } else {
 475                                 phpstr_reset(PHPSTR(s->stream.opaque));
 476                         }
 477                         return SUCCESS;
 478
 479                 case Z_DATA_ERROR:
 480                         /* raw deflated data ? */
 481                         if (!(s->flags & HTTP_INFLATE_TYPE_RAW) && !s->stream.total_out) {
 482                                 inflateEnd(&s->stream);
 483                                 s->flags |= HTTP_INFLATE_TYPE_RAW;
 484                                 inflateInit2(&s->stream, HTTP_WINDOW_BITS_RAW);
 485                                 goto retry_raw_inflate;
 486                         }
 487         }
 488
 489         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Failed to update inflate stream: %s", zError(status));
 490         return FAILURE;
 491 }
 492 /* }}} */
 493
 494 /* {{{ STATUS http_encoding_deflate_stream_flush(http_encoding_stream *, char **, size_t *) */
 495 PHP_HTTP_API STATUS _http_encoding_deflate_stream_flush(http_encoding_stream *s, char **encoded, size_t *encoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 496 {
 497         int status;
 498
 499         *encoded_len = HTTP_DEFLATE_BUFFER_SIZE;
 500         *encoded = emalloc_rel(*encoded_len);
 501
 502         s->stream.avail_in = 0;
 503         s->stream.next_in = NULL;
 504         s->stream.avail_out = *encoded_len;
 505         s->stream.next_out = (Bytef *) *encoded;
 506
 507         switch (status = deflate(&s->stream, Z_FULL_FLUSH)) {
 508                 case Z_OK:
 509                 case Z_STREAM_END:
 510                         *encoded_len = HTTP_DEFLATE_BUFFER_SIZE - s->stream.avail_out;
 511                         *encoded = erealloc_rel(*encoded, *encoded_len + 1);
 512                         (*encoded)[*encoded_len] = '\0';
 513                         return SUCCESS;
 514         }
 515
 516         STR_SET(*encoded, NULL);
 517         *encoded_len = 0;
 518         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Failed to flush deflate stream: %s", zError(status));
 519         return FAILURE;
 520 }
 521 /* }}} */
 522
 523 /* {{{ STATUS http_encoding_inflate_straem_flush(http_encoding_stream *, char **, size_t *) */
 524 PHP_HTTP_API STATUS _http_encoding_inflate_stream_flush(http_encoding_stream *s, char **decoded, size_t *decoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 525 {
 526         /* noop */
 527         *decoded = estrndup("", *decoded_len = 0);
 528         return SUCCESS;
 529 }
 530 /* }}} */
 531
 532 /* {{{ STATUS http_encoding_deflate_stream_finish(http_encoding_stream *, char **, size_t *) */
 533 PHP_HTTP_API STATUS _http_encoding_deflate_stream_finish(http_encoding_stream *s, char **encoded, size_t *encoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 534 {
 535         int status;
 536
 537         *encoded_len = HTTP_DEFLATE_BUFFER_SIZE;
 538         *encoded = emalloc_rel(*encoded_len);
 539
 540         /* deflate remaining input */
 541         s->stream.next_in = (Bytef *) PHPSTR_VAL(s->stream.opaque);
 542         s->stream.avail_in = PHPSTR_LEN(s->stream.opaque);
 543
 544         s->stream.avail_out = *encoded_len;
 545         s->stream.next_out = (Bytef *) *encoded;
 546
 547         do {
 548                 status = deflate(&s->stream, Z_FINISH);
 549         } while (Z_OK == status);
 550
 551         if (Z_STREAM_END == status) {
 552                 /* cut processed intp off */
 553                 phpstr_cut(PHPSTR(s->stream.opaque), 0, PHPSTR_LEN(s->stream.opaque) - s->stream.avail_in);
 554
 555                 /* size down */
 556                 *encoded_len -= s->stream.avail_out;
 557                 *encoded = erealloc_rel(*encoded, *encoded_len + 1);
 558                 (*encoded)[*encoded_len] = '\0';
 559                 return SUCCESS;
 560         }
 561
 562         STR_SET(*encoded, NULL);
 563         *encoded_len = 0;
 564         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Failed to finish deflate stream: %s", zError(status));
 565         return FAILURE;
 566 }
 567 /* }}} */
 568
 569 /* {{{ STATUS http_encoding_inflate_stream_finish(http_encoding_stream *, char **, size_t *) */
 570 PHP_HTTP_API STATUS _http_encoding_inflate_stream_finish(http_encoding_stream *s, char **decoded, size_t *decoded_len ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC TSRMLS_DC)
 571 {
 572         int status;
 573
 574         if (!PHPSTR_LEN(s->stream.opaque)) {
 575                 *decoded = NULL;
 576                 *decoded_len = 0;
 577                 return SUCCESS;
 578         }
 579
 580         *decoded_len = (PHPSTR_LEN(s->stream.opaque) + 1) * HTTP_INFLATE_ROUNDS;
 581         *decoded = emalloc_rel(*decoded_len);
 582
 583         /* inflate remaining input */
 584         s->stream.next_in = (Bytef *) PHPSTR_VAL(s->stream.opaque);
 585         s->stream.avail_in = PHPSTR_LEN(s->stream.opaque);
 586
 587         s->stream.avail_out = *decoded_len;
 588         s->stream.next_out = (Bytef *) *decoded;
 589
 590         if (Z_STREAM_END == (status = inflate(&s->stream, Z_FINISH))) {
 591                 /* cut processed input off */
 592                 phpstr_cut(PHPSTR(s->stream.opaque), 0, PHPSTR_LEN(s->stream.opaque) - s->stream.avail_in);
 593
 594                 /* size down */
 595                 *decoded_len -= s->stream.avail_out;
 596                 *decoded = erealloc_rel(*decoded, *decoded_len + 1);
 597                 (*decoded)[*decoded_len] = '\0';
 598                 return SUCCESS;
 599         }
 600
 601         STR_SET(*decoded, NULL);
 602         *decoded_len = 0;
 603         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Failed to finish inflate stream: %s", zError(status));
 604         return FAILURE;
 605 }
 606 /* }}} */
 607
 608 /* {{{ void http_encoding_deflate_stream_dtor(http_encoding_stream *) */
 609 PHP_HTTP_API void _http_encoding_deflate_stream_dtor(http_encoding_stream *s TSRMLS_DC)
 610 {
 611         if (s) {
 612                 if (s->stream.opaque) {
 613                         phpstr_free((phpstr **) &s->stream.opaque);
 614                 }
 615                 deflateEnd(&s->stream);
 616         }
 617 }
 618 /* }}} */
 619
 620 /* {{{ void http_encoding_inflate_stream_dtor(http_encoding_stream *) */
 621 PHP_HTTP_API void _http_encoding_inflate_stream_dtor(http_encoding_stream *s TSRMLS_DC)
 622 {
 623         if (s) {
 624                 if (s->stream.opaque) {
 625                         phpstr_free((phpstr **) &s->stream.opaque);
 626                 }
 627                 inflateEnd(&s->stream);
 628         }
 629 }
 630 /* }}} */
 631
 632 /* {{{ void http_encoding_deflate_stream_free(http_encoding_stream **) */
 633 PHP_HTTP_API void _http_encoding_deflate_stream_free(http_encoding_stream **s TSRMLS_DC)
 634 {
 635         if (s) {
 636                 http_encoding_deflate_stream_dtor(*s);
 637                 if (*s) {
 638                         pefree(*s, (*s)->flags & HTTP_ENCODING_STREAM_PERSISTENT);
 639                 }
 640                 *s = NULL;
 641         }
 642 }
 643 /* }}} */
 644
 645 /* {{{ void http_encoding_inflate_stream_free(http_encoding_stream **) */
 646 PHP_HTTP_API void _http_encoding_inflate_stream_free(http_encoding_stream **s TSRMLS_DC)
 647 {
 648         if (s) {
 649                 http_encoding_inflate_stream_dtor(*s);
 650                 if (*s) {
 651                         pefree(*s, (*s)->flags & HTTP_ENCODING_STREAM_PERSISTENT);
 652                 }
 653                 *s = NULL;
 654         }
 655 }
 656 /* }}} */
 657
 658 /* {{{ void http_ob_deflatehandler(char *, uint, char **, uint *, int) */
 659 void _http_ob_deflatehandler(char *output, uint output_len, char **handled_output, uint *handled_output_len, int mode TSRMLS_DC)
 660 {
 661         int encoding;
 662
 663         *handled_output = NULL;
 664         *handled_output_len = 0;
 665
 666         if (mode & PHP_OUTPUT_HANDLER_START) {
 667                 int flags;
 668
 669                 if (HTTP_G->send.deflate.stream) {
 670                         zend_error(E_ERROR, "ob_deflatehandler() can only be used once");
 671                         return;
 672                 }
 673
 674                 HTTP_G->send.deflate.response = 1;
 675                 encoding = http_encoding_response_start(0, 1);
 676                 HTTP_G->send.deflate.response = 0;
 677
 678                 switch (encoding) {
 679                         case HTTP_ENCODING_GZIP:
 680                                 flags = HTTP_DEFLATE_TYPE_GZIP;
 681                                 break;
 682
 683                         case HTTP_ENCODING_DEFLATE:
 684                                 flags = HTTP_DEFLATE_TYPE_ZLIB;
 685                                 break;
 686
 687                         default:
 688                                 goto deflate_passthru_plain;
 689                 }
 690
 691                 flags |= (HTTP_G->send.deflate.start_flags &~ 0xf0);
 692                 HTTP_G->send.deflate.stream = http_encoding_deflate_stream_init(NULL, flags);
 693         }
 694
 695         if (HTTP_G->send.deflate.stream) {
 696                 if (output_len) {
 697                         http_encoding_deflate_stream_update((http_encoding_stream *) HTTP_G->send.deflate.stream, output, output_len, handled_output, handled_output_len);
 698                 }
 699
 700                 if (mode & PHP_OUTPUT_HANDLER_END) {
 701                         char *remaining = NULL;
 702                         size_t remaining_len = 0;
 703
 704                         http_encoding_deflate_stream_finish((http_encoding_stream *) HTTP_G->send.deflate.stream, &remaining, &remaining_len);
 705                         http_encoding_deflate_stream_free((http_encoding_stream **) &HTTP_G->send.deflate.stream);
 706                         if (remaining) {
 707                                 *handled_output = erealloc(*handled_output, *handled_output_len + remaining_len + 1);
 708                                 memcpy(*handled_output + *handled_output_len, remaining, remaining_len);
 709                                 (*handled_output)[*handled_output_len += remaining_len] = '\0';
 710                                 efree(remaining);
 711                         }
 712                 }
 713         } else {
 714 deflate_passthru_plain:
 715                 *handled_output = estrndup(output, *handled_output_len = output_len);
 716         }
 717 }
 718 /* }}} */
 719
 720 /* {{{ void http_ob_inflatehandler(char *, uint, char **, uint *, int) */
 721 void _http_ob_inflatehandler(char *output, uint output_len, char **handled_output, uint *handled_output_len, int mode TSRMLS_DC)
 722 {
 723         *handled_output = NULL;
 724         *handled_output_len = 0;
 725
 726         if (mode & PHP_OUTPUT_HANDLER_START) {
 727                 if (HTTP_G->send.inflate.stream) {
 728                         zend_error(E_ERROR, "ob_inflatehandler() can only be used once");
 729                         return;
 730                 }
 731                 HTTP_G->send.inflate.stream = http_encoding_inflate_stream_init(NULL, (HTTP_G->send.inflate.start_flags &~ 0xf0));
 732         }
 733
 734         if (HTTP_G->send.inflate.stream) {
 735                 if (output_len) {
 736                         http_encoding_inflate_stream_update((http_encoding_stream *) HTTP_G->send.inflate.stream, output, output_len, handled_output, handled_output_len);
 737                 }
 738
 739                 if (mode & PHP_OUTPUT_HANDLER_END) {
 740                         char *remaining = NULL;
 741                         size_t remaining_len = 0;
 742
 743                         http_encoding_inflate_stream_finish((http_encoding_stream *) HTTP_G->send.inflate.stream, &remaining, &remaining_len);
 744                         http_encoding_inflate_stream_free((http_encoding_stream **) &HTTP_G->send.inflate.stream);
 745                         if (remaining) {
 746                                 *handled_output = erealloc(*handled_output, *handled_output_len + remaining_len + 1);
 747                                 memcpy(*handled_output + *handled_output_len, remaining, remaining_len);
 748                                 (*handled_output)[*handled_output_len += remaining_len] = '\0';
 749                                 efree(remaining);
 750                         }
 751                 }
 752         } else {
 753                 *handled_output = estrndup(output, *handled_output_len = output_len);
 754         }
 755 }
 756 /* }}} */
 757
 758 #endif /* HTTP_HAVE_ZLIB */
 759
 760 /*
 761  * Local variables:
 762  * tab-width: 4
 763  * c-basic-offset: 4
 764  * End:
 765  * vim600: noet sw=4 ts=4 fdm=marker
 766  * vim<600: noet sw=4 ts=4
 767  */
 768