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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 /* | |
| 6 * secport.c - portability interfaces for security libraries | |
| 7 * | |
| 8 * This file abstracts out libc functionality that libsec depends on | |
| 9 * | |
| 10 * NOTE - These are not public interfaces | |
| 11 */ | |
| 12 | |
| 13 #include "seccomon.h" | |
| 14 #include "prmem.h" | |
| 15 #include "prerror.h" | |
| 16 #include "plarena.h" | |
| 17 #include "secerr.h" | |
| 18 #include "prmon.h" | |
| 19 #include "nssilock.h" | |
| 20 #include "secport.h" | |
| 21 #include "prenv.h" | |
| 22 | |
| 23 #ifdef DEBUG | |
| 24 #define THREADMARK | |
| 25 #endif /* DEBUG */ | |
| 26 | |
| 27 #ifdef THREADMARK | |
| 28 #include "prthread.h" | |
| 29 #endif /* THREADMARK */ | |
| 30 | |
| 31 #if defined(XP_UNIX) || defined(XP_OS2) || defined(XP_BEOS) | |
| 32 #include <stdlib.h> | |
| 33 #else | |
| 34 #include "wtypes.h" | |
| 35 #endif | |
| 36 | |
| 37 #define SET_ERROR_CODE /* place holder for code to set PR error code. */ | |
| 38 | |
| 39 #ifdef THREADMARK | |
| 40 typedef struct threadmark_mark_str { | |
| 41 struct threadmark_mark_str *next; | |
| 42 void *mark; | |
| 43 } threadmark_mark; | |
| 44 | |
| 45 #endif /* THREADMARK */ | |
| 46 | |
| 47 /* The value of this magic must change each time PORTArenaPool changes. */ | |
| 48 #define ARENAPOOL_MAGIC 0xB8AC9BDF | |
| 49 | |
| 50 typedef struct PORTArenaPool_str { | |
| 51 PLArenaPool arena; | |
| 52 PRUint32 magic; | |
| 53 PRLock * lock; | |
| 54 #ifdef THREADMARK | |
| 55 PRThread *marking_thread; | |
| 56 threadmark_mark *first_mark; | |
| 57 #endif | |
| 58 } PORTArenaPool; | |
| 59 | |
| 60 | |
| 61 /* count of allocation failures. */ | |
| 62 unsigned long port_allocFailures; | |
| 63 | |
| 64 /* locations for registering Unicode conversion functions. | |
| 65 * XXX is this the appropriate location? or should they be | |
| 66 * moved to client/server specific locations? | |
| 67 */ | |
| 68 PORTCharConversionFunc ucs4Utf8ConvertFunc; | |
| 69 PORTCharConversionFunc ucs2Utf8ConvertFunc; | |
| 70 PORTCharConversionWSwapFunc ucs2AsciiConvertFunc; | |
| 71 | |
| 72 /* NSPR memory allocation functions (PR_Malloc, PR_Calloc, and PR_Realloc) | |
| 73 * use the PRUint32 type for the size parameter. Before we pass a size_t or | |
| 74 * unsigned long size to these functions, we need to ensure it is <= half of | |
| 75 * the maximum PRUint32 value to avoid truncation and catch a negative size. | |
| 76 */ | |
| 77 #define MAX_SIZE (PR_UINT32_MAX >> 1) | |
| 78 | |
| 79 void * | |
| 80 PORT_Alloc(size_t bytes) | |
| 81 { | |
| 82 void *rv = NULL; | |
| 83 | |
| 84 if (bytes <= MAX_SIZE) { | |
| 85 /* Always allocate a non-zero amount of bytes */ | |
| 86 rv = PR_Malloc(bytes ? bytes : 1); | |
| 87 } | |
| 88 if (!rv) { | |
| 89 ++port_allocFailures; | |
| 90 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 91 } | |
| 92 return rv; | |
| 93 } | |
| 94 | |
| 95 void * | |
| 96 PORT_Realloc(void *oldptr, size_t bytes) | |
| 97 { | |
| 98 void *rv = NULL; | |
| 99 | |
| 100 if (bytes <= MAX_SIZE) { | |
| 101 rv = PR_Realloc(oldptr, bytes); | |
| 102 } | |
| 103 if (!rv) { | |
| 104 ++port_allocFailures; | |
| 105 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 106 } | |
| 107 return rv; | |
| 108 } | |
| 109 | |
| 110 void * | |
| 111 PORT_ZAlloc(size_t bytes) | |
| 112 { | |
| 113 void *rv = NULL; | |
| 114 | |
| 115 if (bytes <= MAX_SIZE) { | |
| 116 /* Always allocate a non-zero amount of bytes */ | |
| 117 rv = PR_Calloc(1, bytes ? bytes : 1); | |
| 118 } | |
| 119 if (!rv) { | |
| 120 ++port_allocFailures; | |
| 121 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 122 } | |
| 123 return rv; | |
| 124 } | |
| 125 | |
| 126 void | |
| 127 PORT_Free(void *ptr) | |
| 128 { | |
| 129 if (ptr) { | |
| 130 PR_Free(ptr); | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 void | |
| 135 PORT_ZFree(void *ptr, size_t len) | |
| 136 { | |
| 137 if (ptr) { | |
| 138 memset(ptr, 0, len); | |
| 139 PR_Free(ptr); | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 char * | |
| 144 PORT_Strdup(const char *str) | |
| 145 { | |
| 146 size_t len = PORT_Strlen(str)+1; | |
| 147 char *newstr; | |
| 148 | |
| 149 newstr = (char *)PORT_Alloc(len); | |
| 150 if (newstr) { | |
| 151 PORT_Memcpy(newstr, str, len); | |
| 152 } | |
| 153 return newstr; | |
| 154 } | |
| 155 | |
| 156 void | |
| 157 PORT_SetError(int value) | |
| 158 { | |
| 159 #ifdef DEBUG_jp96085 | |
| 160 PORT_Assert(value != SEC_ERROR_REUSED_ISSUER_AND_SERIAL); | |
| 161 #endif | |
| 162 PR_SetError(value, 0); | |
| 163 return; | |
| 164 } | |
| 165 | |
| 166 int | |
| 167 PORT_GetError(void) | |
| 168 { | |
| 169 return(PR_GetError()); | |
| 170 } | |
| 171 | |
| 172 /********************* Arena code follows ***************************** | |
| 173 * ArenaPools are like heaps. The memory in them consists of large blocks, | |
| 174 * called arenas, which are allocated from the/a system heap. Inside an | |
| 175 * ArenaPool, the arenas are organized as if they were in a stack. Newly | |
| 176 * allocated arenas are "pushed" on that stack. When you attempt to | |
| 177 * allocate memory from an ArenaPool, the code first looks to see if there | |
| 178 * is enough unused space in the top arena on the stack to satisfy your | |
| 179 * request, and if so, your request is satisfied from that arena. | |
| 180 * Otherwise, a new arena is allocated (or taken from NSPR's list of freed | |
| 181 * arenas) and pushed on to the stack. The new arena is always big enough | |
| 182 * to satisfy the request, and is also at least a minimum size that is | |
| 183 * established at the time that the ArenaPool is created. | |
| 184 * | |
| 185 * The ArenaMark function returns the address of a marker in the arena at | |
| 186 * the top of the arena stack. It is the address of the place in the arena | |
| 187 * on the top of the arena stack from which the next block of memory will | |
| 188 * be allocated. Each ArenaPool has its own separate stack, and hence | |
| 189 * marks are only relevant to the ArenaPool from which they are gotten. | |
| 190 * Marks may be nested. That is, a thread can get a mark, and then get | |
| 191 * another mark. | |
| 192 * | |
| 193 * It is intended that all the marks in an ArenaPool may only be owned by a | |
| 194 * single thread. In DEBUG builds, this is enforced. In non-DEBUG builds, | |
| 195 * it is not. In DEBUG builds, when a thread gets a mark from an | |
| 196 * ArenaPool, no other thread may acquire a mark in that ArenaPool while | |
| 197 * that mark exists, that is, until that mark is unmarked or released. | |
| 198 * Therefore, it is important that every mark be unmarked or released when | |
| 199 * the creating thread has no further need for exclusive ownership of the | |
| 200 * right to manage the ArenaPool. | |
| 201 * | |
| 202 * The ArenaUnmark function discards the ArenaMark at the address given, | |
| 203 * and all marks nested inside that mark (that is, acquired from that same | |
| 204 * ArenaPool while that mark existed). It is an error for a thread other | |
| 205 * than the mark's creator to try to unmark it. When a thread has unmarked | |
| 206 * all its marks from an ArenaPool, then another thread is able to set | |
| 207 * marks in that ArenaPool. ArenaUnmark does not deallocate (or "pop") any | |
| 208 * memory allocated from the ArenaPool since the mark was created. | |
| 209 * | |
| 210 * ArenaRelease "pops" the stack back to the mark, deallocating all the | |
| 211 * memory allocated from the arenas in the ArenaPool since that mark was | |
| 212 * created, and removing any arenas from the ArenaPool that have no | |
| 213 * remaining active allocations when that is done. It implicitly releases | |
| 214 * any marks nested inside the mark being explicitly released. It is the | |
| 215 * only operation, other than destroying the arenapool, that potentially | |
| 216 * reduces the number of arenas on the stack. Otherwise, the stack grows | |
| 217 * until the arenapool is destroyed, at which point all the arenas are | |
| 218 * freed or returned to a "free arena list", depending on their sizes. | |
| 219 */ | |
| 220 PLArenaPool * | |
| 221 PORT_NewArena(unsigned long chunksize) | |
| 222 { | |
| 223 PORTArenaPool *pool; | |
| 224 | |
| 225 if (chunksize > MAX_SIZE) { | |
| 226 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 227 return NULL; | |
| 228 } | |
| 229 pool = PORT_ZNew(PORTArenaPool); | |
| 230 if (!pool) { | |
| 231 return NULL; | |
| 232 } | |
| 233 pool->magic = ARENAPOOL_MAGIC; | |
| 234 pool->lock = PZ_NewLock(nssILockArena); | |
| 235 if (!pool->lock) { | |
| 236 ++port_allocFailures; | |
| 237 PORT_Free(pool); | |
| 238 return NULL; | |
| 239 } | |
| 240 PL_InitArenaPool(&pool->arena, "security", chunksize, sizeof(double)); | |
| 241 return(&pool->arena); | |
| 242 } | |
| 243 | |
| 244 void * | |
| 245 PORT_ArenaAlloc(PLArenaPool *arena, size_t size) | |
| 246 { | |
| 247 void *p = NULL; | |
| 248 | |
| 249 PORTArenaPool *pool = (PORTArenaPool *)arena; | |
| 250 | |
| 251 if (size <= 0) { | |
| 252 size = 1; | |
| 253 } | |
| 254 | |
| 255 if (size > MAX_SIZE) { | |
| 256 /* you lose. */ | |
| 257 } else | |
| 258 /* Is it one of ours? Assume so and check the magic */ | |
| 259 if (ARENAPOOL_MAGIC == pool->magic ) { | |
| 260 PZ_Lock(pool->lock); | |
| 261 #ifdef THREADMARK | |
| 262 /* Most likely one of ours. Is there a thread id? */ | |
| 263 if (pool->marking_thread && | |
| 264 pool->marking_thread != PR_GetCurrentThread() ) { | |
| 265 /* Another thread holds a mark in this arena */ | |
| 266 PZ_Unlock(pool->lock); | |
| 267 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 268 PORT_Assert(0); | |
| 269 return NULL; | |
| 270 } /* tid != null */ | |
| 271 #endif /* THREADMARK */ | |
| 272 PL_ARENA_ALLOCATE(p, arena, size); | |
| 273 PZ_Unlock(pool->lock); | |
| 274 } else { | |
| 275 PL_ARENA_ALLOCATE(p, arena, size); | |
| 276 } | |
| 277 | |
| 278 if (!p) { | |
| 279 ++port_allocFailures; | |
| 280 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 281 } | |
| 282 | |
| 283 return(p); | |
| 284 } | |
| 285 | |
| 286 void * | |
| 287 PORT_ArenaZAlloc(PLArenaPool *arena, size_t size) | |
| 288 { | |
| 289 void *p; | |
| 290 | |
| 291 if (size <= 0) | |
| 292 size = 1; | |
| 293 | |
| 294 p = PORT_ArenaAlloc(arena, size); | |
| 295 | |
| 296 if (p) { | |
| 297 PORT_Memset(p, 0, size); | |
| 298 } | |
| 299 | |
| 300 return(p); | |
| 301 } | |
| 302 | |
| 303 /* | |
| 304 * If zero is true, zeroize the arena memory before freeing it. | |
| 305 */ | |
| 306 void | |
| 307 PORT_FreeArena(PLArenaPool *arena, PRBool zero) | |
| 308 { | |
| 309 PORTArenaPool *pool = (PORTArenaPool *)arena; | |
| 310 PRLock * lock = (PRLock *)0; | |
| 311 size_t len = sizeof *arena; | |
| 312 static PRBool checkedEnv = PR_FALSE; | |
| 313 static PRBool doFreeArenaPool = PR_FALSE; | |
| 314 | |
| 315 if (!pool) | |
| 316 return; | |
| 317 if (ARENAPOOL_MAGIC == pool->magic ) { | |
| 318 len = sizeof *pool; | |
| 319 lock = pool->lock; | |
| 320 PZ_Lock(lock); | |
| 321 } | |
| 322 if (!checkedEnv) { | |
| 323 /* no need for thread protection here */ | |
| 324 doFreeArenaPool = (PR_GetEnvSecure("NSS_DISABLE_ARENA_FREE_LIST") == NUL
L); | |
| 325 checkedEnv = PR_TRUE; | |
| 326 } | |
| 327 if (zero) { | |
| 328 PL_ClearArenaPool(arena, 0); | |
| 329 } | |
| 330 if (doFreeArenaPool) { | |
| 331 PL_FreeArenaPool(arena); | |
| 332 } else { | |
| 333 PL_FinishArenaPool(arena); | |
| 334 } | |
| 335 PORT_ZFree(arena, len); | |
| 336 if (lock) { | |
| 337 PZ_Unlock(lock); | |
| 338 PZ_DestroyLock(lock); | |
| 339 } | |
| 340 } | |
| 341 | |
| 342 void * | |
| 343 PORT_ArenaGrow(PLArenaPool *arena, void *ptr, size_t oldsize, size_t newsize) | |
| 344 { | |
| 345 PORTArenaPool *pool = (PORTArenaPool *)arena; | |
| 346 PORT_Assert(newsize >= oldsize); | |
| 347 | |
| 348 if (newsize > MAX_SIZE) { | |
| 349 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 350 return NULL; | |
| 351 } | |
| 352 | |
| 353 if (ARENAPOOL_MAGIC == pool->magic ) { | |
| 354 PZ_Lock(pool->lock); | |
| 355 /* Do we do a THREADMARK check here? */ | |
| 356 PL_ARENA_GROW(ptr, arena, oldsize, ( newsize - oldsize ) ); | |
| 357 PZ_Unlock(pool->lock); | |
| 358 } else { | |
| 359 PL_ARENA_GROW(ptr, arena, oldsize, ( newsize - oldsize ) ); | |
| 360 } | |
| 361 | |
| 362 return(ptr); | |
| 363 } | |
| 364 | |
| 365 void * | |
| 366 PORT_ArenaMark(PLArenaPool *arena) | |
| 367 { | |
| 368 void * result; | |
| 369 | |
| 370 PORTArenaPool *pool = (PORTArenaPool *)arena; | |
| 371 if (ARENAPOOL_MAGIC == pool->magic ) { | |
| 372 PZ_Lock(pool->lock); | |
| 373 #ifdef THREADMARK | |
| 374 { | |
| 375 threadmark_mark *tm, **pw; | |
| 376 PRThread * currentThread = PR_GetCurrentThread(); | |
| 377 | |
| 378 if (! pool->marking_thread ) { | |
| 379 /* First mark */ | |
| 380 pool->marking_thread = currentThread; | |
| 381 } else if (currentThread != pool->marking_thread ) { | |
| 382 PZ_Unlock(pool->lock); | |
| 383 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 384 PORT_Assert(0); | |
| 385 return NULL; | |
| 386 } | |
| 387 | |
| 388 result = PL_ARENA_MARK(arena); | |
| 389 PL_ARENA_ALLOCATE(tm, arena, sizeof(threadmark_mark)); | |
| 390 if (!tm) { | |
| 391 PZ_Unlock(pool->lock); | |
| 392 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 393 return NULL; | |
| 394 } | |
| 395 | |
| 396 tm->mark = result; | |
| 397 tm->next = (threadmark_mark *)NULL; | |
| 398 | |
| 399 pw = &pool->first_mark; | |
| 400 while( *pw ) { | |
| 401 pw = &(*pw)->next; | |
| 402 } | |
| 403 | |
| 404 *pw = tm; | |
| 405 } | |
| 406 #else /* THREADMARK */ | |
| 407 result = PL_ARENA_MARK(arena); | |
| 408 #endif /* THREADMARK */ | |
| 409 PZ_Unlock(pool->lock); | |
| 410 } else { | |
| 411 /* a "pure" NSPR arena */ | |
| 412 result = PL_ARENA_MARK(arena); | |
| 413 } | |
| 414 return result; | |
| 415 } | |
| 416 | |
| 417 /* | |
| 418 * This function accesses the internals of PLArena, which is why it needs | |
| 419 * to use the NSPR internal macro PL_MAKE_MEM_UNDEFINED before the memset | |
| 420 * calls. | |
| 421 * | |
| 422 * We should move this function to NSPR as PL_ClearArenaAfterMark or add | |
| 423 * a PL_ARENA_CLEAR_AND_RELEASE macro. | |
| 424 * | |
| 425 * TODO: remove the #ifdef PL_MAKE_MEM_UNDEFINED tests when NSPR 4.10+ is | |
| 426 * widely available. | |
| 427 */ | |
| 428 static void | |
| 429 port_ArenaZeroAfterMark(PLArenaPool *arena, void *mark) | |
| 430 { | |
| 431 PLArena *a = arena->current; | |
| 432 if (a->base <= (PRUword)mark && (PRUword)mark <= a->avail) { | |
| 433 /* fast path: mark falls in the current arena */ | |
| 434 #ifdef PL_MAKE_MEM_UNDEFINED | |
| 435 PL_MAKE_MEM_UNDEFINED(mark, a->avail - (PRUword)mark); | |
| 436 #endif | |
| 437 memset(mark, 0, a->avail - (PRUword)mark); | |
| 438 } else { | |
| 439 /* slow path: need to find the arena that mark falls in */ | |
| 440 for (a = arena->first.next; a; a = a->next) { | |
| 441 PR_ASSERT(a->base <= a->avail && a->avail <= a->limit); | |
| 442 if (a->base <= (PRUword)mark && (PRUword)mark <= a->avail) { | |
| 443 #ifdef PL_MAKE_MEM_UNDEFINED | |
| 444 PL_MAKE_MEM_UNDEFINED(mark, a->avail - (PRUword)mark); | |
| 445 #endif | |
| 446 memset(mark, 0, a->avail - (PRUword)mark); | |
| 447 a = a->next; | |
| 448 break; | |
| 449 } | |
| 450 } | |
| 451 for (; a; a = a->next) { | |
| 452 PR_ASSERT(a->base <= a->avail && a->avail <= a->limit); | |
| 453 #ifdef PL_MAKE_MEM_UNDEFINED | |
| 454 PL_MAKE_MEM_UNDEFINED((void *)a->base, a->avail - a->base); | |
| 455 #endif | |
| 456 memset((void *)a->base, 0, a->avail - a->base); | |
| 457 } | |
| 458 } | |
| 459 } | |
| 460 | |
| 461 static void | |
| 462 port_ArenaRelease(PLArenaPool *arena, void *mark, PRBool zero) | |
| 463 { | |
| 464 PORTArenaPool *pool = (PORTArenaPool *)arena; | |
| 465 if (ARENAPOOL_MAGIC == pool->magic ) { | |
| 466 PZ_Lock(pool->lock); | |
| 467 #ifdef THREADMARK | |
| 468 { | |
| 469 threadmark_mark **pw; | |
| 470 | |
| 471 if (PR_GetCurrentThread() != pool->marking_thread ) { | |
| 472 PZ_Unlock(pool->lock); | |
| 473 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 474 PORT_Assert(0); | |
| 475 return /* no error indication available */ ; | |
| 476 } | |
| 477 | |
| 478 pw = &pool->first_mark; | |
| 479 while( *pw && (mark != (*pw)->mark) ) { | |
| 480 pw = &(*pw)->next; | |
| 481 } | |
| 482 | |
| 483 if (! *pw ) { | |
| 484 /* bad mark */ | |
| 485 PZ_Unlock(pool->lock); | |
| 486 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 487 PORT_Assert(0); | |
| 488 return /* no error indication available */ ; | |
| 489 } | |
| 490 | |
| 491 *pw = (threadmark_mark *)NULL; | |
| 492 | |
| 493 if (zero) { | |
| 494 port_ArenaZeroAfterMark(arena, mark); | |
| 495 } | |
| 496 PL_ARENA_RELEASE(arena, mark); | |
| 497 | |
| 498 if (! pool->first_mark ) { | |
| 499 pool->marking_thread = (PRThread *)NULL; | |
| 500 } | |
| 501 } | |
| 502 #else /* THREADMARK */ | |
| 503 if (zero) { | |
| 504 port_ArenaZeroAfterMark(arena, mark); | |
| 505 } | |
| 506 PL_ARENA_RELEASE(arena, mark); | |
| 507 #endif /* THREADMARK */ | |
| 508 PZ_Unlock(pool->lock); | |
| 509 } else { | |
| 510 if (zero) { | |
| 511 port_ArenaZeroAfterMark(arena, mark); | |
| 512 } | |
| 513 PL_ARENA_RELEASE(arena, mark); | |
| 514 } | |
| 515 } | |
| 516 | |
| 517 void | |
| 518 PORT_ArenaRelease(PLArenaPool *arena, void *mark) | |
| 519 { | |
| 520 port_ArenaRelease(arena, mark, PR_FALSE); | |
| 521 } | |
| 522 | |
| 523 /* | |
| 524 * Zeroize the arena memory before releasing it. | |
| 525 */ | |
| 526 void | |
| 527 PORT_ArenaZRelease(PLArenaPool *arena, void *mark) | |
| 528 { | |
| 529 port_ArenaRelease(arena, mark, PR_TRUE); | |
| 530 } | |
| 531 | |
| 532 void | |
| 533 PORT_ArenaUnmark(PLArenaPool *arena, void *mark) | |
| 534 { | |
| 535 #ifdef THREADMARK | |
| 536 PORTArenaPool *pool = (PORTArenaPool *)arena; | |
| 537 if (ARENAPOOL_MAGIC == pool->magic ) { | |
| 538 threadmark_mark **pw; | |
| 539 | |
| 540 PZ_Lock(pool->lock); | |
| 541 | |
| 542 if (PR_GetCurrentThread() != pool->marking_thread ) { | |
| 543 PZ_Unlock(pool->lock); | |
| 544 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 545 PORT_Assert(0); | |
| 546 return /* no error indication available */ ; | |
| 547 } | |
| 548 | |
| 549 pw = &pool->first_mark; | |
| 550 while( ((threadmark_mark *)NULL != *pw) && (mark != (*pw)->mark) ) { | |
| 551 pw = &(*pw)->next; | |
| 552 } | |
| 553 | |
| 554 if ((threadmark_mark *)NULL == *pw ) { | |
| 555 /* bad mark */ | |
| 556 PZ_Unlock(pool->lock); | |
| 557 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 558 PORT_Assert(0); | |
| 559 return /* no error indication available */ ; | |
| 560 } | |
| 561 | |
| 562 *pw = (threadmark_mark *)NULL; | |
| 563 | |
| 564 if (! pool->first_mark ) { | |
| 565 pool->marking_thread = (PRThread *)NULL; | |
| 566 } | |
| 567 | |
| 568 PZ_Unlock(pool->lock); | |
| 569 } | |
| 570 #endif /* THREADMARK */ | |
| 571 } | |
| 572 | |
| 573 char * | |
| 574 PORT_ArenaStrdup(PLArenaPool *arena, const char *str) { | |
| 575 int len = PORT_Strlen(str)+1; | |
| 576 char *newstr; | |
| 577 | |
| 578 newstr = (char*)PORT_ArenaAlloc(arena,len); | |
| 579 if (newstr) { | |
| 580 PORT_Memcpy(newstr,str,len); | |
| 581 } | |
| 582 return newstr; | |
| 583 } | |
| 584 | |
| 585 /********************** end of arena functions ***********************/ | |
| 586 | |
| 587 /****************** unicode conversion functions ***********************/ | |
| 588 /* | |
| 589 * NOTE: These conversion functions all assume that the multibyte | |
| 590 * characters are going to be in NETWORK BYTE ORDER, not host byte | |
| 591 * order. This is because the only time we deal with UCS-2 and UCS-4 | |
| 592 * are when the data was received from or is going to be sent out | |
| 593 * over the wire (in, e.g. certificates). | |
| 594 */ | |
| 595 | |
| 596 void | |
| 597 PORT_SetUCS4_UTF8ConversionFunction(PORTCharConversionFunc convFunc) | |
| 598 { | |
| 599 ucs4Utf8ConvertFunc = convFunc; | |
| 600 } | |
| 601 | |
| 602 void | |
| 603 PORT_SetUCS2_ASCIIConversionFunction(PORTCharConversionWSwapFunc convFunc) | |
| 604 { | |
| 605 ucs2AsciiConvertFunc = convFunc; | |
| 606 } | |
| 607 | |
| 608 void | |
| 609 PORT_SetUCS2_UTF8ConversionFunction(PORTCharConversionFunc convFunc) | |
| 610 { | |
| 611 ucs2Utf8ConvertFunc = convFunc; | |
| 612 } | |
| 613 | |
| 614 PRBool | |
| 615 PORT_UCS4_UTF8Conversion(PRBool toUnicode, unsigned char *inBuf, | |
| 616 unsigned int inBufLen, unsigned char *outBuf, | |
| 617 unsigned int maxOutBufLen, unsigned int *outBufLen) | |
| 618 { | |
| 619 if(!ucs4Utf8ConvertFunc) { | |
| 620 return sec_port_ucs4_utf8_conversion_function(toUnicode, | |
| 621 inBuf, inBufLen, outBuf, maxOutBufLen, outBufLen); | |
| 622 } | |
| 623 | |
| 624 return (*ucs4Utf8ConvertFunc)(toUnicode, inBuf, inBufLen, outBuf, | |
| 625 maxOutBufLen, outBufLen); | |
| 626 } | |
| 627 | |
| 628 PRBool | |
| 629 PORT_UCS2_UTF8Conversion(PRBool toUnicode, unsigned char *inBuf, | |
| 630 unsigned int inBufLen, unsigned char *outBuf, | |
| 631 unsigned int maxOutBufLen, unsigned int *outBufLen) | |
| 632 { | |
| 633 if(!ucs2Utf8ConvertFunc) { | |
| 634 return sec_port_ucs2_utf8_conversion_function(toUnicode, | |
| 635 inBuf, inBufLen, outBuf, maxOutBufLen, outBufLen); | |
| 636 } | |
| 637 | |
| 638 return (*ucs2Utf8ConvertFunc)(toUnicode, inBuf, inBufLen, outBuf, | |
| 639 maxOutBufLen, outBufLen); | |
| 640 } | |
| 641 | |
| 642 PRBool | |
| 643 PORT_ISO88591_UTF8Conversion(const unsigned char *inBuf, | |
| 644 unsigned int inBufLen, unsigned char *outBuf, | |
| 645 unsigned int maxOutBufLen, unsigned int *outBufLen) | |
| 646 { | |
| 647 return sec_port_iso88591_utf8_conversion_function(inBuf, inBufLen, | |
| 648 outBuf, maxOutBufLen, outBufLen); | |
| 649 } | |
| 650 | |
| 651 PRBool | |
| 652 PORT_UCS2_ASCIIConversion(PRBool toUnicode, unsigned char *inBuf, | |
| 653 unsigned int inBufLen, unsigned char *outBuf, | |
| 654 unsigned int maxOutBufLen, unsigned int *outBufLen, | |
| 655 PRBool swapBytes) | |
| 656 { | |
| 657 if(!ucs2AsciiConvertFunc) { | |
| 658 return PR_FALSE; | |
| 659 } | |
| 660 | |
| 661 return (*ucs2AsciiConvertFunc)(toUnicode, inBuf, inBufLen, outBuf, | |
| 662 maxOutBufLen, outBufLen, swapBytes); | |
| 663 } | |
| 664 | |
| 665 | |
| 666 /* Portable putenv. Creates/replaces an environment variable of the form | |
| 667 * envVarName=envValue | |
| 668 */ | |
| 669 int | |
| 670 NSS_PutEnv(const char * envVarName, const char * envValue) | |
| 671 { | |
| 672 SECStatus result = SECSuccess; | |
| 673 char * encoded; | |
| 674 int putEnvFailed; | |
| 675 #ifdef _WIN32 | |
| 676 PRBool setOK; | |
| 677 | |
| 678 setOK = SetEnvironmentVariable(envVarName, envValue); | |
| 679 if (!setOK) { | |
| 680 SET_ERROR_CODE | |
| 681 return SECFailure; | |
| 682 } | |
| 683 #endif | |
| 684 | |
| 685 encoded = (char *)PORT_ZAlloc(strlen(envVarName) + 2 + strlen(envValue)); | |
| 686 strcpy(encoded, envVarName); | |
| 687 strcat(encoded, "="); | |
| 688 strcat(encoded, envValue); | |
| 689 | |
| 690 putEnvFailed = putenv(encoded); /* adopt. */ | |
| 691 if (putEnvFailed) { | |
| 692 SET_ERROR_CODE | |
| 693 result = SECFailure; | |
| 694 PORT_Free(encoded); | |
| 695 } | |
| 696 return result; | |
| 697 } | |
| 698 | |
| 699 /* | |
| 700 * Perform a constant-time compare of two memory regions. The return value is | |
| 701 * 0 if the memory regions are equal and non-zero otherwise. | |
| 702 */ | |
| 703 int | |
| 704 NSS_SecureMemcmp(const void *ia, const void *ib, size_t n) | |
| 705 { | |
| 706 const unsigned char *a = (const unsigned char*) ia; | |
| 707 const unsigned char *b = (const unsigned char*) ib; | |
| 708 size_t i; | |
| 709 unsigned char r = 0; | |
| 710 | |
| 711 for (i = 0; i < n; ++i) { | |
| 712 r |= *a++ ^ *b++; | |
| 713 } | |
| 714 | |
| 715 return r; | |
| 716 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2078763002:
Delete bundled copy of NSS and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/nss@master