| OLD | NEW |
|---|
| (Empty) |
| 1 #include <stdio.h> | |
| 2 #include <stdlib.h> | |
| 3 #include <string.h> | |
| 4 #include <openssl/objects.h> | |
| 5 #include <openssl/comp.h> | |
| 6 #include <openssl/err.h> | |
| 7 | |
| 8 COMP_METHOD *COMP_zlib(void ); | |
| 9 | |
| 10 static COMP_METHOD zlib_method_nozlib={ | |
| 11 NID_undef, | |
| 12 "(undef)", | |
| 13 NULL, | |
| 14 NULL, | |
| 15 NULL, | |
| 16 NULL, | |
| 17 NULL, | |
| 18 NULL, | |
| 19 }; | |
| 20 | |
| 21 #ifndef ZLIB | |
| 22 #undef ZLIB_SHARED | |
| 23 #else | |
| 24 | |
| 25 #include <zlib.h> | |
| 26 | |
| 27 static int zlib_stateful_init(COMP_CTX *ctx); | |
| 28 static void zlib_stateful_finish(COMP_CTX *ctx); | |
| 29 static int zlib_stateful_compress_block(COMP_CTX *ctx, unsigned char *out, | |
| 30 unsigned int olen, unsigned char *in, unsigned int ilen); | |
| 31 static int zlib_stateful_expand_block(COMP_CTX *ctx, unsigned char *out, | |
| 32 unsigned int olen, unsigned char *in, unsigned int ilen); | |
| 33 | |
| 34 | |
| 35 /* memory allocations functions for zlib intialization */ | |
| 36 static void* zlib_zalloc(void* opaque, unsigned int no, unsigned int size) | |
| 37 { | |
| 38 void *p; | |
| 39 | |
| 40 p=OPENSSL_malloc(no*size); | |
| 41 if (p) | |
| 42 memset(p, 0, no*size); | |
| 43 return p; | |
| 44 } | |
| 45 | |
| 46 | |
| 47 static void zlib_zfree(void* opaque, void* address) | |
| 48 { | |
| 49 OPENSSL_free(address); | |
| 50 } | |
| 51 | |
| 52 #if 0 | |
| 53 static int zlib_compress_block(COMP_CTX *ctx, unsigned char *out, | |
| 54 unsigned int olen, unsigned char *in, unsigned int ilen); | |
| 55 static int zlib_expand_block(COMP_CTX *ctx, unsigned char *out, | |
| 56 unsigned int olen, unsigned char *in, unsigned int ilen); | |
| 57 | |
| 58 static int zz_uncompress(Bytef *dest, uLongf *destLen, const Bytef *source, | |
| 59 uLong sourceLen); | |
| 60 | |
| 61 static COMP_METHOD zlib_stateless_method={ | |
| 62 NID_zlib_compression, | |
| 63 LN_zlib_compression, | |
| 64 NULL, | |
| 65 NULL, | |
| 66 zlib_compress_block, | |
| 67 zlib_expand_block, | |
| 68 NULL, | |
| 69 NULL, | |
| 70 }; | |
| 71 #endif | |
| 72 | |
| 73 static COMP_METHOD zlib_stateful_method={ | |
| 74 NID_zlib_compression, | |
| 75 LN_zlib_compression, | |
| 76 zlib_stateful_init, | |
| 77 zlib_stateful_finish, | |
| 78 zlib_stateful_compress_block, | |
| 79 zlib_stateful_expand_block, | |
| 80 NULL, | |
| 81 NULL, | |
| 82 }; | |
| 83 | |
| 84 /* | |
| 85 * When OpenSSL is built on Windows, we do not want to require that | |
| 86 * the ZLIB.DLL be available in order for the OpenSSL DLLs to | |
| 87 * work. Therefore, all ZLIB routines are loaded at run time | |
| 88 * and we do not link to a .LIB file when ZLIB_SHARED is set. | |
| 89 */ | |
| 90 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) | |
| 91 # include <windows.h> | |
| 92 #endif /* !(OPENSSL_SYS_WINDOWS || OPENSSL_SYS_WIN32) */ | |
| 93 | |
| 94 #ifdef ZLIB_SHARED | |
| 95 #include <openssl/dso.h> | |
| 96 | |
| 97 /* Function pointers */ | |
| 98 typedef int (*compress_ft)(Bytef *dest,uLongf *destLen, | |
| 99 const Bytef *source, uLong sourceLen); | |
| 100 typedef int (*inflateEnd_ft)(z_streamp strm); | |
| 101 typedef int (*inflate_ft)(z_streamp strm, int flush); | |
| 102 typedef int (*inflateInit__ft)(z_streamp strm, | |
| 103 const char * version, int stream_size); | |
| 104 typedef int (*deflateEnd_ft)(z_streamp strm); | |
| 105 typedef int (*deflate_ft)(z_streamp strm, int flush); | |
| 106 typedef int (*deflateInit__ft)(z_streamp strm, int level, | |
| 107 const char * version, int stream_size); | |
| 108 typedef const char * (*zError__ft)(int err); | |
| 109 static compress_ft p_compress=NULL; | |
| 110 static inflateEnd_ft p_inflateEnd=NULL; | |
| 111 static inflate_ft p_inflate=NULL; | |
| 112 static inflateInit__ft p_inflateInit_=NULL; | |
| 113 static deflateEnd_ft p_deflateEnd=NULL; | |
| 114 static deflate_ft p_deflate=NULL; | |
| 115 static deflateInit__ft p_deflateInit_=NULL; | |
| 116 static zError__ft p_zError=NULL; | |
| 117 | |
| 118 static int zlib_loaded = 0; /* only attempt to init func pts once */ | |
| 119 static DSO *zlib_dso = NULL; | |
| 120 | |
| 121 #define compress p_compress | |
| 122 #define inflateEnd p_inflateEnd | |
| 123 #define inflate p_inflate | |
| 124 #define inflateInit_ p_inflateInit_ | |
| 125 #define deflateEnd p_deflateEnd | |
| 126 #define deflate p_deflate | |
| 127 #define deflateInit_ p_deflateInit_ | |
| 128 #define zError p_zError | |
| 129 #endif /* ZLIB_SHARED */ | |
| 130 | |
| 131 struct zlib_state | |
| 132 { | |
| 133 z_stream istream; | |
| 134 z_stream ostream; | |
| 135 }; | |
| 136 | |
| 137 static int zlib_stateful_ex_idx = -1; | |
| 138 | |
| 139 static int zlib_stateful_init(COMP_CTX *ctx) | |
| 140 { | |
| 141 int err; | |
| 142 struct zlib_state *state = | |
| 143 (struct zlib_state *)OPENSSL_malloc(sizeof(struct zlib_state)); | |
| 144 | |
| 145 if (state == NULL) | |
| 146 goto err; | |
| 147 | |
| 148 state->istream.zalloc = zlib_zalloc; | |
| 149 state->istream.zfree = zlib_zfree; | |
| 150 state->istream.opaque = Z_NULL; | |
| 151 state->istream.next_in = Z_NULL; | |
| 152 state->istream.next_out = Z_NULL; | |
| 153 state->istream.avail_in = 0; | |
| 154 state->istream.avail_out = 0; | |
| 155 err = inflateInit_(&state->istream, | |
| 156 ZLIB_VERSION, sizeof(z_stream)); | |
| 157 if (err != Z_OK) | |
| 158 goto err; | |
| 159 | |
| 160 state->ostream.zalloc = zlib_zalloc; | |
| 161 state->ostream.zfree = zlib_zfree; | |
| 162 state->ostream.opaque = Z_NULL; | |
| 163 state->ostream.next_in = Z_NULL; | |
| 164 state->ostream.next_out = Z_NULL; | |
| 165 state->ostream.avail_in = 0; | |
| 166 state->ostream.avail_out = 0; | |
| 167 err = deflateInit_(&state->ostream,Z_DEFAULT_COMPRESSION, | |
| 168 ZLIB_VERSION, sizeof(z_stream)); | |
| 169 if (err != Z_OK) | |
| 170 goto err; | |
| 171 | |
| 172 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_COMP,ctx,&ctx->ex_data); | |
| 173 CRYPTO_set_ex_data(&ctx->ex_data,zlib_stateful_ex_idx,state); | |
| 174 return 1; | |
| 175 err: | |
| 176 if (state) OPENSSL_free(state); | |
| 177 return 0; | |
| 178 } | |
| 179 | |
| 180 static void zlib_stateful_finish(COMP_CTX *ctx) | |
| 181 { | |
| 182 struct zlib_state *state = | |
| 183 (struct zlib_state *)CRYPTO_get_ex_data(&ctx->ex_data, | |
| 184 zlib_stateful_ex_idx); | |
| 185 inflateEnd(&state->istream); | |
| 186 deflateEnd(&state->ostream); | |
| 187 OPENSSL_free(state); | |
| 188 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_COMP,ctx,&ctx->ex_data); | |
| 189 } | |
| 190 | |
| 191 static int zlib_stateful_compress_block(COMP_CTX *ctx, unsigned char *out, | |
| 192 unsigned int olen, unsigned char *in, unsigned int ilen) | |
| 193 { | |
| 194 int err = Z_OK; | |
| 195 struct zlib_state *state = | |
| 196 (struct zlib_state *)CRYPTO_get_ex_data(&ctx->ex_data, | |
| 197 zlib_stateful_ex_idx); | |
| 198 | |
| 199 if (state == NULL) | |
| 200 return -1; | |
| 201 | |
| 202 state->ostream.next_in = in; | |
| 203 state->ostream.avail_in = ilen; | |
| 204 state->ostream.next_out = out; | |
| 205 state->ostream.avail_out = olen; | |
| 206 if (ilen > 0) | |
| 207 err = deflate(&state->ostream, Z_SYNC_FLUSH); | |
| 208 if (err != Z_OK) | |
| 209 return -1; | |
| 210 #ifdef DEBUG_ZLIB | |
| 211 fprintf(stderr,"compress(%4d)->%4d %s\n", | |
| 212 ilen,olen - state->ostream.avail_out, | |
| 213 (ilen != olen - state->ostream.avail_out)?"zlib":"clear"); | |
| 214 #endif | |
| 215 return olen - state->ostream.avail_out; | |
| 216 } | |
| 217 | |
| 218 static int zlib_stateful_expand_block(COMP_CTX *ctx, unsigned char *out, | |
| 219 unsigned int olen, unsigned char *in, unsigned int ilen) | |
| 220 { | |
| 221 int err = Z_OK; | |
| 222 | |
| 223 struct zlib_state *state = | |
| 224 (struct zlib_state *)CRYPTO_get_ex_data(&ctx->ex_data, | |
| 225 zlib_stateful_ex_idx); | |
| 226 | |
| 227 if (state == NULL) | |
| 228 return 0; | |
| 229 | |
| 230 state->istream.next_in = in; | |
| 231 state->istream.avail_in = ilen; | |
| 232 state->istream.next_out = out; | |
| 233 state->istream.avail_out = olen; | |
| 234 if (ilen > 0) | |
| 235 err = inflate(&state->istream, Z_SYNC_FLUSH); | |
| 236 if (err != Z_OK) | |
| 237 return -1; | |
| 238 #ifdef DEBUG_ZLIB | |
| 239 fprintf(stderr,"expand(%4d)->%4d %s\n", | |
| 240 ilen,olen - state->istream.avail_out, | |
| 241 (ilen != olen - state->istream.avail_out)?"zlib":"clear"); | |
| 242 #endif | |
| 243 return olen - state->istream.avail_out; | |
| 244 } | |
| 245 | |
| 246 #if 0 | |
| 247 static int zlib_compress_block(COMP_CTX *ctx, unsigned char *out, | |
| 248 unsigned int olen, unsigned char *in, unsigned int ilen) | |
| 249 { | |
| 250 unsigned long l; | |
| 251 int i; | |
| 252 int clear=1; | |
| 253 | |
| 254 if (ilen > 128) | |
| 255 { | |
| 256 out[0]=1; | |
| 257 l=olen-1; | |
| 258 i=compress(&(out[1]),&l,in,(unsigned long)ilen); | |
| 259 if (i != Z_OK) | |
| 260 return(-1); | |
| 261 if (ilen > l) | |
| 262 { | |
| 263 clear=0; | |
| 264 l++; | |
| 265 } | |
| 266 } | |
| 267 if (clear) | |
| 268 { | |
| 269 out[0]=0; | |
| 270 memcpy(&(out[1]),in,ilen); | |
| 271 l=ilen+1; | |
| 272 } | |
| 273 #ifdef DEBUG_ZLIB | |
| 274 fprintf(stderr,"compress(%4d)->%4d %s\n", | |
| 275 ilen,(int)l,(clear)?"clear":"zlib"); | |
| 276 #endif | |
| 277 return((int)l); | |
| 278 } | |
| 279 | |
| 280 static int zlib_expand_block(COMP_CTX *ctx, unsigned char *out, | |
| 281 unsigned int olen, unsigned char *in, unsigned int ilen) | |
| 282 { | |
| 283 unsigned long l; | |
| 284 int i; | |
| 285 | |
| 286 if (in[0]) | |
| 287 { | |
| 288 l=olen; | |
| 289 i=zz_uncompress(out,&l,&(in[1]),(unsigned long)ilen-1); | |
| 290 if (i != Z_OK) | |
| 291 return(-1); | |
| 292 } | |
| 293 else | |
| 294 { | |
| 295 memcpy(out,&(in[1]),ilen-1); | |
| 296 l=ilen-1; | |
| 297 } | |
| 298 #ifdef DEBUG_ZLIB | |
| 299 fprintf(stderr,"expand (%4d)->%4d %s\n", | |
| 300 ilen,(int)l,in[0]?"zlib":"clear"); | |
| 301 #endif | |
| 302 return((int)l); | |
| 303 } | |
| 304 | |
| 305 static int zz_uncompress (Bytef *dest, uLongf *destLen, const Bytef *source, | |
| 306 uLong sourceLen) | |
| 307 { | |
| 308 z_stream stream; | |
| 309 int err; | |
| 310 | |
| 311 stream.next_in = (Bytef*)source; | |
| 312 stream.avail_in = (uInt)sourceLen; | |
| 313 /* Check for source > 64K on 16-bit machine: */ | |
| 314 if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; | |
| 315 | |
| 316 stream.next_out = dest; | |
| 317 stream.avail_out = (uInt)*destLen; | |
| 318 if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; | |
| 319 | |
| 320 stream.zalloc = (alloc_func)0; | |
| 321 stream.zfree = (free_func)0; | |
| 322 | |
| 323 err = inflateInit_(&stream, | |
| 324 ZLIB_VERSION, sizeof(z_stream)); | |
| 325 if (err != Z_OK) return err; | |
| 326 | |
| 327 err = inflate(&stream, Z_FINISH); | |
| 328 if (err != Z_STREAM_END) { | |
| 329 inflateEnd(&stream); | |
| 330 return err; | |
| 331 } | |
| 332 *destLen = stream.total_out; | |
| 333 | |
| 334 err = inflateEnd(&stream); | |
| 335 return err; | |
| 336 } | |
| 337 #endif | |
| 338 | |
| 339 #endif | |
| 340 | |
| 341 COMP_METHOD *COMP_zlib(void) | |
| 342 { | |
| 343 COMP_METHOD *meth = &zlib_method_nozlib; | |
| 344 | |
| 345 #ifdef ZLIB_SHARED | |
| 346 if (!zlib_loaded) | |
| 347 { | |
| 348 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) | |
| 349 zlib_dso = DSO_load(NULL, "ZLIB1", NULL, 0); | |
| 350 #else | |
| 351 zlib_dso = DSO_load(NULL, "z", NULL, 0); | |
| 352 #endif | |
| 353 if (zlib_dso != NULL) | |
| 354 { | |
| 355 p_compress | |
| 356 = (compress_ft) DSO_bind_func(zlib_dso, | |
| 357 "compress"); | |
| 358 p_inflateEnd | |
| 359 = (inflateEnd_ft) DSO_bind_func(zlib_dso, | |
| 360 "inflateEnd"); | |
| 361 p_inflate | |
| 362 = (inflate_ft) DSO_bind_func(zlib_dso, | |
| 363 "inflate"); | |
| 364 p_inflateInit_ | |
| 365 = (inflateInit__ft) DSO_bind_func(zlib_dso, | |
| 366 "inflateInit_"); | |
| 367 p_deflateEnd | |
| 368 = (deflateEnd_ft) DSO_bind_func(zlib_dso, | |
| 369 "deflateEnd"); | |
| 370 p_deflate | |
| 371 = (deflate_ft) DSO_bind_func(zlib_dso, | |
| 372 "deflate"); | |
| 373 p_deflateInit_ | |
| 374 = (deflateInit__ft) DSO_bind_func(zlib_dso, | |
| 375 "deflateInit_"); | |
| 376 p_zError | |
| 377 = (zError__ft) DSO_bind_func(zlib_dso, | |
| 378 "zError"); | |
| 379 | |
| 380 if (p_compress && p_inflateEnd && p_inflate | |
| 381 && p_inflateInit_ && p_deflateEnd | |
| 382 && p_deflate && p_deflateInit_ && p_zError) | |
| 383 zlib_loaded++; | |
| 384 } | |
| 385 } | |
| 386 | |
| 387 #endif | |
| 388 #ifdef ZLIB_SHARED | |
| 389 if (zlib_loaded) | |
| 390 #endif | |
| 391 #if defined(ZLIB) || defined(ZLIB_SHARED) | |
| 392 { | |
| 393 /* init zlib_stateful_ex_idx here so that in a multi-process | |
| 394 * application it's enough to intialize openssl before forking | |
| 395 * (idx will be inherited in all the children) */ | |
| 396 if (zlib_stateful_ex_idx == -1) | |
| 397 { | |
| 398 CRYPTO_w_lock(CRYPTO_LOCK_COMP); | |
| 399 if (zlib_stateful_ex_idx == -1) | |
| 400 zlib_stateful_ex_idx = | |
| 401 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_
COMP, | |
| 402 0,NULL,NULL,NULL,NULL); | |
| 403 CRYPTO_w_unlock(CRYPTO_LOCK_COMP); | |
| 404 if (zlib_stateful_ex_idx == -1) | |
| 405 goto err; | |
| 406 } | |
| 407 | |
| 408 meth = &zlib_stateful_method; | |
| 409 } | |
| 410 err: | |
| 411 #endif | |
| 412 | |
| 413 return(meth); | |
| 414 } | |
| 415 | |
| 416 void COMP_zlib_cleanup(void) | |
| 417 { | |
| 418 #ifdef ZLIB_SHARED | |
| 419 if (zlib_dso) | |
| 420 DSO_free(zlib_dso); | |
| 421 #endif | |
| 422 } | |
| 423 | |
| 424 #ifdef ZLIB | |
| 425 | |
| 426 /* Zlib based compression/decompression filter BIO */ | |
| 427 | |
| 428 typedef struct | |
| 429 { | |
| 430 unsigned char *ibuf; /* Input buffer */ | |
| 431 int ibufsize; /* Buffer size */ | |
| 432 z_stream zin; /* Input decompress context */ | |
| 433 unsigned char *obuf; /* Output buffer */ | |
| 434 int obufsize; /* Output buffer size */ | |
| 435 unsigned char *optr; /* Position in output buffer */ | |
| 436 int ocount; /* Amount of data in output buffer */ | |
| 437 int odone; /* deflate EOF */ | |
| 438 int comp_level; /* Compression level to use */ | |
| 439 z_stream zout; /* Output compression context */ | |
| 440 } BIO_ZLIB_CTX; | |
| 441 | |
| 442 #define ZLIB_DEFAULT_BUFSIZE 1024 | |
| 443 | |
| 444 static int bio_zlib_new(BIO *bi); | |
| 445 static int bio_zlib_free(BIO *bi); | |
| 446 static int bio_zlib_read(BIO *b, char *out, int outl); | |
| 447 static int bio_zlib_write(BIO *b, const char *in, int inl); | |
| 448 static long bio_zlib_ctrl(BIO *b, int cmd, long num, void *ptr); | |
| 449 static long bio_zlib_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp); | |
| 450 | |
| 451 static BIO_METHOD bio_meth_zlib = | |
| 452 { | |
| 453 BIO_TYPE_COMP, | |
| 454 "zlib", | |
| 455 bio_zlib_write, | |
| 456 bio_zlib_read, | |
| 457 NULL, | |
| 458 NULL, | |
| 459 bio_zlib_ctrl, | |
| 460 bio_zlib_new, | |
| 461 bio_zlib_free, | |
| 462 bio_zlib_callback_ctrl | |
| 463 }; | |
| 464 | |
| 465 BIO_METHOD *BIO_f_zlib(void) | |
| 466 { | |
| 467 return &bio_meth_zlib; | |
| 468 } | |
| 469 | |
| 470 | |
| 471 static int bio_zlib_new(BIO *bi) | |
| 472 { | |
| 473 BIO_ZLIB_CTX *ctx; | |
| 474 #ifdef ZLIB_SHARED | |
| 475 (void)COMP_zlib(); | |
| 476 if (!zlib_loaded) | |
| 477 { | |
| 478 COMPerr(COMP_F_BIO_ZLIB_NEW, COMP_R_ZLIB_NOT_SUPPORTED); | |
| 479 return 0; | |
| 480 } | |
| 481 #endif | |
| 482 ctx = OPENSSL_malloc(sizeof(BIO_ZLIB_CTX)); | |
| 483 if(!ctx) | |
| 484 { | |
| 485 COMPerr(COMP_F_BIO_ZLIB_NEW, ERR_R_MALLOC_FAILURE); | |
| 486 return 0; | |
| 487 } | |
| 488 ctx->ibuf = NULL; | |
| 489 ctx->obuf = NULL; | |
| 490 ctx->ibufsize = ZLIB_DEFAULT_BUFSIZE; | |
| 491 ctx->obufsize = ZLIB_DEFAULT_BUFSIZE; | |
| 492 ctx->zin.zalloc = Z_NULL; | |
| 493 ctx->zin.zfree = Z_NULL; | |
| 494 ctx->zin.next_in = NULL; | |
| 495 ctx->zin.avail_in = 0; | |
| 496 ctx->zin.next_out = NULL; | |
| 497 ctx->zin.avail_out = 0; | |
| 498 ctx->zout.zalloc = Z_NULL; | |
| 499 ctx->zout.zfree = Z_NULL; | |
| 500 ctx->zout.next_in = NULL; | |
| 501 ctx->zout.avail_in = 0; | |
| 502 ctx->zout.next_out = NULL; | |
| 503 ctx->zout.avail_out = 0; | |
| 504 ctx->odone = 0; | |
| 505 ctx->comp_level = Z_DEFAULT_COMPRESSION; | |
| 506 bi->init = 1; | |
| 507 bi->ptr = (char *)ctx; | |
| 508 bi->flags = 0; | |
| 509 return 1; | |
| 510 } | |
| 511 | |
| 512 static int bio_zlib_free(BIO *bi) | |
| 513 { | |
| 514 BIO_ZLIB_CTX *ctx; | |
| 515 if(!bi) return 0; | |
| 516 ctx = (BIO_ZLIB_CTX *)bi->ptr; | |
| 517 if(ctx->ibuf) | |
| 518 { | |
| 519 /* Destroy decompress context */ | |
| 520 inflateEnd(&ctx->zin); | |
| 521 OPENSSL_free(ctx->ibuf); | |
| 522 } | |
| 523 if(ctx->obuf) | |
| 524 { | |
| 525 /* Destroy compress context */ | |
| 526 deflateEnd(&ctx->zout); | |
| 527 OPENSSL_free(ctx->obuf); | |
| 528 } | |
| 529 OPENSSL_free(ctx); | |
| 530 bi->ptr = NULL; | |
| 531 bi->init = 0; | |
| 532 bi->flags = 0; | |
| 533 return 1; | |
| 534 } | |
| 535 | |
| 536 static int bio_zlib_read(BIO *b, char *out, int outl) | |
| 537 { | |
| 538 BIO_ZLIB_CTX *ctx; | |
| 539 int ret; | |
| 540 z_stream *zin; | |
| 541 if(!out || !outl) return 0; | |
| 542 ctx = (BIO_ZLIB_CTX *)b->ptr; | |
| 543 zin = &ctx->zin; | |
| 544 BIO_clear_retry_flags(b); | |
| 545 if(!ctx->ibuf) | |
| 546 { | |
| 547 ctx->ibuf = OPENSSL_malloc(ctx->ibufsize); | |
| 548 if(!ctx->ibuf) | |
| 549 { | |
| 550 COMPerr(COMP_F_BIO_ZLIB_READ, ERR_R_MALLOC_FAILURE); | |
| 551 return 0; | |
| 552 } | |
| 553 inflateInit(zin); | |
| 554 zin->next_in = ctx->ibuf; | |
| 555 zin->avail_in = 0; | |
| 556 } | |
| 557 | |
| 558 /* Copy output data directly to supplied buffer */ | |
| 559 zin->next_out = (unsigned char *)out; | |
| 560 zin->avail_out = (unsigned int)outl; | |
| 561 for(;;) | |
| 562 { | |
| 563 /* Decompress while data available */ | |
| 564 while(zin->avail_in) | |
| 565 { | |
| 566 ret = inflate(zin, 0); | |
| 567 if((ret != Z_OK) && (ret != Z_STREAM_END)) | |
| 568 { | |
| 569 COMPerr(COMP_F_BIO_ZLIB_READ, | |
| 570 COMP_R_ZLIB_INFLATE_ERROR); | |
| 571 ERR_add_error_data(2, "zlib error:", | |
| 572 zError(ret)); | |
| 573 return 0; | |
| 574 } | |
| 575 /* If EOF or we've read everything then return */ | |
| 576 if((ret == Z_STREAM_END) || !zin->avail_out) | |
| 577 return outl - zin->avail_out; | |
| 578 } | |
| 579 | |
| 580 /* No data in input buffer try to read some in, | |
| 581 * if an error then return the total data read. | |
| 582 */ | |
| 583 ret = BIO_read(b->next_bio, ctx->ibuf, ctx->ibufsize); | |
| 584 if(ret <= 0) | |
| 585 { | |
| 586 /* Total data read */ | |
| 587 int tot = outl - zin->avail_out; | |
| 588 BIO_copy_next_retry(b); | |
| 589 if(ret < 0) return (tot > 0) ? tot : ret; | |
| 590 return tot; | |
| 591 } | |
| 592 zin->avail_in = ret; | |
| 593 zin->next_in = ctx->ibuf; | |
| 594 } | |
| 595 } | |
| 596 | |
| 597 static int bio_zlib_write(BIO *b, const char *in, int inl) | |
| 598 { | |
| 599 BIO_ZLIB_CTX *ctx; | |
| 600 int ret; | |
| 601 z_stream *zout; | |
| 602 if(!in || !inl) return 0; | |
| 603 ctx = (BIO_ZLIB_CTX *)b->ptr; | |
| 604 if(ctx->odone) return 0; | |
| 605 zout = &ctx->zout; | |
| 606 BIO_clear_retry_flags(b); | |
| 607 if(!ctx->obuf) | |
| 608 { | |
| 609 ctx->obuf = OPENSSL_malloc(ctx->obufsize); | |
| 610 /* Need error here */ | |
| 611 if(!ctx->obuf) | |
| 612 { | |
| 613 COMPerr(COMP_F_BIO_ZLIB_WRITE, ERR_R_MALLOC_FAILURE); | |
| 614 return 0; | |
| 615 } | |
| 616 ctx->optr = ctx->obuf; | |
| 617 ctx->ocount = 0; | |
| 618 deflateInit(zout, ctx->comp_level); | |
| 619 zout->next_out = ctx->obuf; | |
| 620 zout->avail_out = ctx->obufsize; | |
| 621 } | |
| 622 /* Obtain input data directly from supplied buffer */ | |
| 623 zout->next_in = (void *)in; | |
| 624 zout->avail_in = inl; | |
| 625 for(;;) | |
| 626 { | |
| 627 /* If data in output buffer write it first */ | |
| 628 while(ctx->ocount) { | |
| 629 ret = BIO_write(b->next_bio, ctx->optr, ctx->ocount); | |
| 630 if(ret <= 0) | |
| 631 { | |
| 632 /* Total data written */ | |
| 633 int tot = inl - zout->avail_in; | |
| 634 BIO_copy_next_retry(b); | |
| 635 if(ret < 0) return (tot > 0) ? tot : ret; | |
| 636 return tot; | |
| 637 } | |
| 638 ctx->optr += ret; | |
| 639 ctx->ocount -= ret; | |
| 640 } | |
| 641 | |
| 642 /* Have we consumed all supplied data? */ | |
| 643 if(!zout->avail_in) | |
| 644 return inl; | |
| 645 | |
| 646 /* Compress some more */ | |
| 647 | |
| 648 /* Reset buffer */ | |
| 649 ctx->optr = ctx->obuf; | |
| 650 zout->next_out = ctx->obuf; | |
| 651 zout->avail_out = ctx->obufsize; | |
| 652 /* Compress some more */ | |
| 653 ret = deflate(zout, 0); | |
| 654 if(ret != Z_OK) | |
| 655 { | |
| 656 COMPerr(COMP_F_BIO_ZLIB_WRITE, | |
| 657 COMP_R_ZLIB_DEFLATE_ERROR); | |
| 658 ERR_add_error_data(2, "zlib error:", zError(ret)); | |
| 659 return 0; | |
| 660 } | |
| 661 ctx->ocount = ctx->obufsize - zout->avail_out; | |
| 662 } | |
| 663 } | |
| 664 | |
| 665 static int bio_zlib_flush(BIO *b) | |
| 666 { | |
| 667 BIO_ZLIB_CTX *ctx; | |
| 668 int ret; | |
| 669 z_stream *zout; | |
| 670 ctx = (BIO_ZLIB_CTX *)b->ptr; | |
| 671 /* If no data written or already flush show success */ | |
| 672 if(!ctx->obuf || (ctx->odone && !ctx->ocount)) return 1; | |
| 673 zout = &ctx->zout; | |
| 674 BIO_clear_retry_flags(b); | |
| 675 /* No more input data */ | |
| 676 zout->next_in = NULL; | |
| 677 zout->avail_in = 0; | |
| 678 for(;;) | |
| 679 { | |
| 680 /* If data in output buffer write it first */ | |
| 681 while(ctx->ocount) | |
| 682 { | |
| 683 ret = BIO_write(b->next_bio, ctx->optr, ctx->ocount); | |
| 684 if(ret <= 0) | |
| 685 { | |
| 686 BIO_copy_next_retry(b); | |
| 687 return ret; | |
| 688 } | |
| 689 ctx->optr += ret; | |
| 690 ctx->ocount -= ret; | |
| 691 } | |
| 692 if(ctx->odone) return 1; | |
| 693 | |
| 694 /* Compress some more */ | |
| 695 | |
| 696 /* Reset buffer */ | |
| 697 ctx->optr = ctx->obuf; | |
| 698 zout->next_out = ctx->obuf; | |
| 699 zout->avail_out = ctx->obufsize; | |
| 700 /* Compress some more */ | |
| 701 ret = deflate(zout, Z_FINISH); | |
| 702 if(ret == Z_STREAM_END) ctx->odone = 1; | |
| 703 else if(ret != Z_OK) | |
| 704 { | |
| 705 COMPerr(COMP_F_BIO_ZLIB_FLUSH, | |
| 706 COMP_R_ZLIB_DEFLATE_ERROR); | |
| 707 ERR_add_error_data(2, "zlib error:", zError(ret)); | |
| 708 return 0; | |
| 709 } | |
| 710 ctx->ocount = ctx->obufsize - zout->avail_out; | |
| 711 } | |
| 712 } | |
| 713 | |
| 714 static long bio_zlib_ctrl(BIO *b, int cmd, long num, void *ptr) | |
| 715 { | |
| 716 BIO_ZLIB_CTX *ctx; | |
| 717 int ret, *ip; | |
| 718 int ibs, obs; | |
| 719 if(!b->next_bio) return 0; | |
| 720 ctx = (BIO_ZLIB_CTX *)b->ptr; | |
| 721 switch (cmd) | |
| 722 { | |
| 723 | |
| 724 case BIO_CTRL_RESET: | |
| 725 ctx->ocount = 0; | |
| 726 ctx->odone = 0; | |
| 727 ret = 1; | |
| 728 break; | |
| 729 | |
| 730 case BIO_CTRL_FLUSH: | |
| 731 ret = bio_zlib_flush(b); | |
| 732 if (ret > 0) | |
| 733 ret = BIO_flush(b->next_bio); | |
| 734 break; | |
| 735 | |
| 736 case BIO_C_SET_BUFF_SIZE: | |
| 737 ibs = -1; | |
| 738 obs = -1; | |
| 739 if (ptr != NULL) | |
| 740 { | |
| 741 ip = ptr; | |
| 742 if (*ip == 0) | |
| 743 ibs = (int) num; | |
| 744 else | |
| 745 obs = (int) num; | |
| 746 } | |
| 747 else | |
| 748 { | |
| 749 ibs = (int)num; | |
| 750 obs = ibs; | |
| 751 } | |
| 752 | |
| 753 if (ibs != -1) | |
| 754 { | |
| 755 if (ctx->ibuf) | |
| 756 { | |
| 757 OPENSSL_free(ctx->ibuf); | |
| 758 ctx->ibuf = NULL; | |
| 759 } | |
| 760 ctx->ibufsize = ibs; | |
| 761 } | |
| 762 | |
| 763 if (obs != -1) | |
| 764 { | |
| 765 if (ctx->obuf) | |
| 766 { | |
| 767 OPENSSL_free(ctx->obuf); | |
| 768 ctx->obuf = NULL; | |
| 769 } | |
| 770 ctx->obufsize = obs; | |
| 771 } | |
| 772 ret = 1; | |
| 773 break; | |
| 774 | |
| 775 case BIO_C_DO_STATE_MACHINE: | |
| 776 BIO_clear_retry_flags(b); | |
| 777 ret = BIO_ctrl(b->next_bio, cmd, num, ptr); | |
| 778 BIO_copy_next_retry(b); | |
| 779 break; | |
| 780 | |
| 781 default: | |
| 782 ret = BIO_ctrl(b->next_bio, cmd, num, ptr); | |
| 783 break; | |
| 784 | |
| 785 } | |
| 786 | |
| 787 return ret; | |
| 788 } | |
| 789 | |
| 790 | |
| 791 static long bio_zlib_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) | |
| 792 { | |
| 793 if(!b->next_bio) | |
| 794 return 0; | |
| 795 return | |
| 796 BIO_callback_ctrl(b->next_bio, cmd, fp); | |
| 797 } | |
| 798 | |
| 799 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master