00001
00005 #include "system.h"
00006
00007 #if HAVE_GELF_H
00008
00009 #include <gelf.h>
00010
00011 #if !defined(DT_GNU_PRELINKED)
00012 #define DT_GNU_PRELINKED 0x6ffffdf5
00013 #endif
00014 #if !defined(DT_GNU_LIBLIST)
00015 #define DT_GNU_LIBLIST 0x6ffffef9
00016 #endif
00017
00018 #endif
00019
00020 #include "rpmio_internal.h"
00021 #include <rpmlib.h>
00022 #include <rpmmacro.h>
00023 #include "misc.h"
00024 #include "legacy.h"
00025 #include "debug.h"
00026
00027 #define alloca_strdup(_s) strcpy(alloca(strlen(_s)+1), (_s))
00028
00036 static int open_dso(const char * path, pid_t * pidp, size_t *fsizep)
00037
00038
00039
00040 {
00041
00042 static const char * cmd = NULL;
00043 static int initted = 0;
00044 int fdno;
00045
00046 if (!initted) {
00047 cmd = rpmExpand("%{?__prelink_undo_cmd}", NULL);
00048 initted++;
00049 }
00050
00051
00052 if (pidp) *pidp = 0;
00053
00054 if (fsizep) {
00055 struct stat sb, * st = &sb;
00056 if (stat(path, st) < 0)
00057 return -1;
00058 *fsizep = st->st_size;
00059 }
00060
00061
00062 fdno = open(path, O_RDONLY);
00063 if (fdno < 0)
00064 return fdno;
00065
00066
00067 if (!(cmd && *cmd))
00068 return fdno;
00069
00070
00071 #if HAVE_GELF_H && HAVE_LIBELF
00072 { Elf *elf = NULL;
00073 Elf_Scn *scn = NULL;
00074 Elf_Data *data = NULL;
00075 GElf_Ehdr ehdr;
00076 GElf_Shdr shdr;
00077 GElf_Dyn dyn;
00078 int bingo;
00079
00080 (void) elf_version(EV_CURRENT);
00081
00082
00083 if ((elf = elf_begin (fdno, ELF_C_READ, NULL)) == NULL
00084 || elf_kind(elf) != ELF_K_ELF
00085 || gelf_getehdr(elf, &ehdr) == NULL
00086 || !(ehdr.e_type == ET_DYN || ehdr.e_type == ET_EXEC))
00087 goto exit;
00088
00089
00090 bingo = 0;
00091
00092 while (!bingo && (scn = elf_nextscn(elf, scn)) != NULL) {
00093 (void) gelf_getshdr(scn, &shdr);
00094 if (shdr.sh_type != SHT_DYNAMIC)
00095 continue;
00096 while (!bingo && (data = elf_getdata (scn, data)) != NULL) {
00097 int maxndx = data->d_size / shdr.sh_entsize;
00098 int ndx;
00099
00100 for (ndx = 0; ndx < maxndx; ++ndx) {
00101 (void) gelf_getdyn (data, ndx, &dyn);
00102 if (!(dyn.d_tag == DT_GNU_PRELINKED || dyn.d_tag == DT_GNU_LIBLIST))
00103 continue;
00104 bingo = 1;
00105 break;
00106 }
00107 }
00108 }
00109
00110
00111
00112 if (pidp != NULL && bingo) {
00113 int pipes[2];
00114 pid_t pid;
00115 int xx;
00116
00117 xx = close(fdno);
00118 pipes[0] = pipes[1] = -1;
00119 xx = pipe(pipes);
00120 if (!(pid = fork())) {
00121 const char ** av;
00122 int ac;
00123 xx = close(pipes[0]);
00124 xx = dup2(pipes[1], STDOUT_FILENO);
00125 xx = close(pipes[1]);
00126 if (!poptParseArgvString(cmd, &ac, &av)) {
00127 av[ac-1] = path;
00128 av[ac] = NULL;
00129 unsetenv("MALLOC_CHECK_");
00130
00131 #if defined(__GLIBC__)
00132
00136 {
00137 char* bypassVar = (char*) malloc(1024*sizeof(char));
00138 if (bypassVar != NULL)
00139 {
00140 snprintf(bypassVar,1024*sizeof(char), "__PASSTHROUGH_LD_ASSUME_KERNEL_%d", getppid());
00141 bypassVar[1023] = '\0';
00142 if (getenv(bypassVar) != NULL)
00143 {
00144 char* bypassVal = (char*) malloc(1024*sizeof(char));
00145 if (bypassVal != NULL)
00146 {
00147 snprintf(bypassVal, 1024*sizeof(char), "%s", getenv(bypassVar));
00148 unsetenv(bypassVar);
00149 snprintf(bypassVar, 1024*sizeof(char), "LD_ASSUME_KERNEL=%s", bypassVal);
00150 bypassVar[1023] = '\0';
00151 putenv(bypassVar);
00152 free(bypassVal);
00153 }
00154 else
00155 {
00156 free(bypassVar);
00157 }
00158 }
00159 }
00160 }
00161 #endif
00162 xx = execve(av[0], (char *const *)av+1, environ);
00163 }
00164 _exit(127);
00165 }
00166 *pidp = pid;
00167 fdno = pipes[0];
00168 xx = close(pipes[1]);
00169 }
00170
00171
00172 exit:
00173 if (elf) (void) elf_end(elf);
00174 }
00175 #endif
00176
00177 return fdno;
00178 }
00179
00180 int domd5(const char * fn, unsigned char * digest, int asAscii, size_t *fsizep)
00181 {
00182 const char * path;
00183 urltype ut = urlPath(fn, &path);
00184 unsigned char * md5sum = NULL;
00185 size_t md5len;
00186 unsigned char buf[32*BUFSIZ];
00187 FD_t fd;
00188 size_t fsize = 0;
00189 pid_t pid = 0;
00190 int rc = 0;
00191 int fdno;
00192 int xx;
00193
00194
00195 fdno = open_dso(path, &pid, &fsize);
00196
00197 if (fdno < 0) {
00198 rc = 1;
00199 goto exit;
00200 }
00201
00202 switch(ut) {
00203 case URL_IS_PATH:
00204 case URL_IS_UNKNOWN:
00205 #if HAVE_MMAP
00206 if (pid == 0) {
00207 DIGEST_CTX ctx;
00208 void * mapped;
00209
00210 mapped = mmap(NULL, fsize, PROT_READ, MAP_SHARED, fdno, 0);
00211 if (mapped == (void *)-1) {
00212 xx = close(fdno);
00213 rc = 1;
00214 break;
00215 }
00216
00217 #ifdef MADV_SEQUENTIAL
00218 xx = madvise(mapped, fsize, MADV_SEQUENTIAL);
00219 #endif
00220
00221 ctx = rpmDigestInit(PGPHASHALGO_MD5, RPMDIGEST_NONE);
00222 xx = rpmDigestUpdate(ctx, mapped, fsize);
00223 xx = rpmDigestFinal(ctx, (void **)&md5sum, &md5len, asAscii);
00224 xx = munmap(mapped, fsize);
00225 xx = close(fdno);
00226 break;
00227 }
00228 #endif
00229 case URL_IS_FTP:
00230 case URL_IS_HTTP:
00231 case URL_IS_DASH:
00232 default:
00233
00234 fd = (pid != 0) ? fdDup(fdno) : Fopen(fn, "r.ufdio");
00235 (void) close(fdno);
00236 if (fd == NULL || Ferror(fd)) {
00237 rc = 1;
00238 if (fd != NULL)
00239 (void) Fclose(fd);
00240 break;
00241 }
00242
00243 fdInitDigest(fd, PGPHASHALGO_MD5, 0);
00244 fsize = 0;
00245 while ((rc = Fread(buf, sizeof(buf[0]), sizeof(buf), fd)) > 0)
00246 fsize += rc;
00247 fdFiniDigest(fd, PGPHASHALGO_MD5, (void **)&md5sum, &md5len, asAscii);
00248 if (Ferror(fd))
00249 rc = 1;
00250
00251 (void) Fclose(fd);
00252 break;
00253 }
00254
00255
00256 if (pid) {
00257 int status;
00258 (void) waitpid(pid, &status, 0);
00259 if (!WIFEXITED(status) || WEXITSTATUS(status))
00260 rc = 1;
00261 }
00262
00263 exit:
00264
00265 if (fsizep)
00266 *fsizep = fsize;
00267 if (!rc)
00268 memcpy(digest, md5sum, md5len);
00269
00270 md5sum = _free(md5sum);
00271
00272 return rc;
00273 }
00274
00275
00276
00277 int _noDirTokens = 0;
00278
00279
00280
00281 static int dncmp(const void * a, const void * b)
00282
00283 {
00284 const char *const * first = a;
00285 const char *const * second = b;
00286 return strcmp(*first, *second);
00287 }
00288
00289
00290
00291 void compressFilelist(Header h)
00292 {
00293 HGE_t hge = (HGE_t)headerGetEntryMinMemory;
00294 HAE_t hae = (HAE_t)headerAddEntry;
00295 HRE_t hre = (HRE_t)headerRemoveEntry;
00296 HFD_t hfd = headerFreeData;
00297 char ** fileNames;
00298 const char ** dirNames;
00299 const char ** baseNames;
00300 int_32 * dirIndexes;
00301 rpmTagType fnt;
00302 int count;
00303 int i, xx;
00304 int dirIndex = -1;
00305
00306
00307
00308
00309
00310
00311
00312 if (headerIsEntry(h, RPMTAG_DIRNAMES)) {
00313 xx = hre(h, RPMTAG_OLDFILENAMES);
00314 return;
00315 }
00316
00317 if (!hge(h, RPMTAG_OLDFILENAMES, &fnt, (void **) &fileNames, &count))
00318 return;
00319 if (fileNames == NULL || count <= 0)
00320 return;
00321
00322 dirNames = alloca(sizeof(*dirNames) * count);
00323 baseNames = alloca(sizeof(*dirNames) * count);
00324 dirIndexes = alloca(sizeof(*dirIndexes) * count);
00325
00326 if (fileNames[0][0] != '/') {
00327
00328 dirIndex = 0;
00329 dirNames[dirIndex] = "";
00330 for (i = 0; i < count; i++) {
00331 dirIndexes[i] = dirIndex;
00332 baseNames[i] = fileNames[i];
00333 }
00334 goto exit;
00335 }
00336
00337
00338 for (i = 0; i < count; i++) {
00339 const char ** needle;
00340 char savechar;
00341 char * baseName;
00342 int len;
00343
00344 if (fileNames[i] == NULL)
00345 continue;
00346 baseName = strrchr(fileNames[i], '/') + 1;
00347 len = baseName - fileNames[i];
00348 needle = dirNames;
00349 savechar = *baseName;
00350 *baseName = '\0';
00351
00352 if (dirIndex < 0 ||
00353 (needle = bsearch(&fileNames[i], dirNames, dirIndex + 1, sizeof(dirNames[0]), dncmp)) == NULL) {
00354 char *s = alloca(len + 1);
00355 memcpy(s, fileNames[i], len + 1);
00356 s[len] = '\0';
00357 dirIndexes[i] = ++dirIndex;
00358 dirNames[dirIndex] = s;
00359 } else
00360 dirIndexes[i] = needle - dirNames;
00361
00362
00363 *baseName = savechar;
00364 baseNames[i] = baseName;
00365 }
00366
00367
00368 exit:
00369 if (count > 0) {
00370 xx = hae(h, RPMTAG_DIRINDEXES, RPM_INT32_TYPE, dirIndexes, count);
00371 xx = hae(h, RPMTAG_BASENAMES, RPM_STRING_ARRAY_TYPE,
00372 baseNames, count);
00373 xx = hae(h, RPMTAG_DIRNAMES, RPM_STRING_ARRAY_TYPE,
00374 dirNames, dirIndex + 1);
00375 }
00376
00377 fileNames = hfd(fileNames, fnt);
00378
00379 xx = hre(h, RPMTAG_OLDFILENAMES);
00380 }
00381
00382
00383 void rpmfiBuildFNames(Header h, rpmTag tagN,
00384 const char *** fnp, int * fcp)
00385 {
00386 HGE_t hge = (HGE_t)headerGetEntryMinMemory;
00387 HFD_t hfd = headerFreeData;
00388 const char ** baseNames;
00389 const char ** dirNames;
00390 int * dirIndexes;
00391 int count;
00392 const char ** fileNames;
00393 int size;
00394 rpmTag dirNameTag = 0;
00395 rpmTag dirIndexesTag = 0;
00396 rpmTagType bnt, dnt;
00397 char * t;
00398 int i, xx;
00399
00400 if (tagN == RPMTAG_BASENAMES) {
00401 dirNameTag = RPMTAG_DIRNAMES;
00402 dirIndexesTag = RPMTAG_DIRINDEXES;
00403 } else if (tagN == RPMTAG_ORIGBASENAMES) {
00404 dirNameTag = RPMTAG_ORIGDIRNAMES;
00405 dirIndexesTag = RPMTAG_ORIGDIRINDEXES;
00406 }
00407
00408 if (!hge(h, tagN, &bnt, (void **) &baseNames, &count)) {
00409 if (fnp) *fnp = NULL;
00410 if (fcp) *fcp = 0;
00411 return;
00412 }
00413
00414 xx = hge(h, dirNameTag, &dnt, (void **) &dirNames, NULL);
00415 xx = hge(h, dirIndexesTag, NULL, (void **) &dirIndexes, &count);
00416
00417 size = sizeof(*fileNames) * count;
00418 for (i = 0; i < count; i++)
00419 size += strlen(baseNames[i]) + strlen(dirNames[dirIndexes[i]]) + 1;
00420
00421 fileNames = xmalloc(size);
00422 t = ((char *) fileNames) + (sizeof(*fileNames) * count);
00423
00424 for (i = 0; i < count; i++) {
00425 fileNames[i] = t;
00426 t = stpcpy( stpcpy(t, dirNames[dirIndexes[i]]), baseNames[i]);
00427 *t++ = '\0';
00428 }
00429
00430 baseNames = hfd(baseNames, bnt);
00431 dirNames = hfd(dirNames, dnt);
00432
00433
00434 if (fnp)
00435 *fnp = fileNames;
00436 else
00437 fileNames = _free(fileNames);
00438
00439 if (fcp) *fcp = count;
00440 }
00441
00442 void expandFilelist(Header h)
00443 {
00444 HAE_t hae = (HAE_t)headerAddEntry;
00445 HRE_t hre = (HRE_t)headerRemoveEntry;
00446 const char ** fileNames = NULL;
00447 int count = 0;
00448 int xx;
00449
00450
00451 if (!headerIsEntry(h, RPMTAG_OLDFILENAMES)) {
00452 rpmfiBuildFNames(h, RPMTAG_BASENAMES, &fileNames, &count);
00453 if (fileNames == NULL || count <= 0)
00454 return;
00455 xx = hae(h, RPMTAG_OLDFILENAMES, RPM_STRING_ARRAY_TYPE,
00456 fileNames, count);
00457 fileNames = _free(fileNames);
00458 }
00459
00460
00461 xx = hre(h, RPMTAG_DIRNAMES);
00462 xx = hre(h, RPMTAG_BASENAMES);
00463 xx = hre(h, RPMTAG_DIRINDEXES);
00464 }
00465
00466
00467
00468
00469
00470 void providePackageNVR(Header h)
00471 {
00472 HGE_t hge = (HGE_t)headerGetEntryMinMemory;
00473 HFD_t hfd = headerFreeData;
00474 const char *name, *version, *release;
00475 int_32 * epoch;
00476 const char *pEVR;
00477 char *p;
00478 int_32 pFlags = RPMSENSE_EQUAL;
00479 const char ** provides = NULL;
00480 const char ** providesEVR = NULL;
00481 rpmTagType pnt, pvt;
00482 int_32 * provideFlags = NULL;
00483 int providesCount;
00484 int i, xx;
00485 int bingo = 1;
00486
00487
00488 xx = headerNVR(h, &name, &version, &release);
00489 if (!(name && version && release))
00490 return;
00491 pEVR = p = alloca(21 + strlen(version) + 1 + strlen(release) + 1);
00492 *p = '\0';
00493 if (hge(h, RPMTAG_EPOCH, NULL, (void **) &epoch, NULL)) {
00494 sprintf(p, "%d:", *epoch);
00495 while (*p != '\0')
00496 p++;
00497 }
00498 (void) stpcpy( stpcpy( stpcpy(p, version) , "-") , release);
00499
00500
00501
00502
00503
00504 if (!hge(h, RPMTAG_PROVIDENAME, &pnt, (void **) &provides, &providesCount))
00505 goto exit;
00506
00507
00508
00509
00510 if (!hge(h, RPMTAG_PROVIDEVERSION, &pvt, (void **) &providesEVR, NULL)) {
00511 for (i = 0; i < providesCount; i++) {
00512 char * vdummy = "";
00513 int_32 fdummy = RPMSENSE_ANY;
00514 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEVERSION, RPM_STRING_ARRAY_TYPE,
00515 &vdummy, 1);
00516 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEFLAGS, RPM_INT32_TYPE,
00517 &fdummy, 1);
00518 }
00519 goto exit;
00520 }
00521
00522 xx = hge(h, RPMTAG_PROVIDEFLAGS, NULL, (void **) &provideFlags, NULL);
00523
00524
00525 if (provides && providesEVR && provideFlags)
00526 for (i = 0; i < providesCount; i++) {
00527 if (!(provides[i] && providesEVR[i]))
00528 continue;
00529 if (!(provideFlags[i] == RPMSENSE_EQUAL &&
00530 !strcmp(name, provides[i]) && !strcmp(pEVR, providesEVR[i])))
00531 continue;
00532 bingo = 0;
00533 break;
00534 }
00535
00536
00537 exit:
00538 provides = hfd(provides, pnt);
00539 providesEVR = hfd(providesEVR, pvt);
00540
00541 if (bingo) {
00542 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDENAME, RPM_STRING_ARRAY_TYPE,
00543 &name, 1);
00544 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEFLAGS, RPM_INT32_TYPE,
00545 &pFlags, 1);
00546 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEVERSION, RPM_STRING_ARRAY_TYPE,
00547 &pEVR, 1);
00548 }
00549 }
00550
00551 void legacyRetrofit(Header h, const struct rpmlead * lead)
00552 {
00553 const char * prefix;
00554
00555
00556
00557
00558
00559
00560 if (headerIsEntry(h, RPMTAG_FILEUSERNAME))
00561 (void) headerRemoveEntry(h, RPMTAG_FILEUIDS);
00562 if (headerIsEntry(h, RPMTAG_FILEGROUPNAME))
00563 (void) headerRemoveEntry(h, RPMTAG_FILEGIDS);
00564
00565
00566
00567
00568
00569
00570
00571
00572 if (headerGetEntry(h, RPMTAG_DEFAULTPREFIX, NULL, (void **) &prefix, NULL))
00573 {
00574 const char * nprefix = stripTrailingChar(alloca_strdup(prefix), '/');
00575 (void) headerAddEntry(h, RPMTAG_PREFIXES, RPM_STRING_ARRAY_TYPE,
00576 &nprefix, 1);
00577 }
00578
00579
00580
00581
00582
00583
00584
00585
00586 if (lead->major < 4)
00587 compressFilelist(h);
00588
00589
00590 if (lead->type == RPMLEAD_SOURCE) {
00591 int_32 one = 1;
00592 if (!headerIsEntry(h, RPMTAG_SOURCEPACKAGE))
00593 (void) headerAddEntry(h, RPMTAG_SOURCEPACKAGE, RPM_INT32_TYPE,
00594 &one, 1);
00595 } else if (lead->major < 4) {
00596
00597 providePackageNVR(h);
00598 }
00599 }