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 xx = execve(av[0], (char *const *)av+1, environ);
00131 }
00132 _exit(127);
00133 }
00134 *pidp = pid;
00135 fdno = pipes[0];
00136 xx = close(pipes[1]);
00137 }
00138
00139
00140 exit:
00141 if (elf) (void) elf_end(elf);
00142 }
00143 #endif
00144
00145 return fdno;
00146 }
00147
00148 int domd5(const char * fn, unsigned char * digest, int asAscii, size_t *fsizep)
00149 {
00150 const char * path;
00151 urltype ut = urlPath(fn, &path);
00152 unsigned char * md5sum = NULL;
00153 size_t md5len;
00154 unsigned char buf[32*BUFSIZ];
00155 FD_t fd;
00156 size_t fsize = 0;
00157 pid_t pid = 0;
00158 int rc = 0;
00159 int fdno;
00160 int xx;
00161
00162
00163 fdno = open_dso(path, &pid, &fsize);
00164
00165 if (fdno < 0) {
00166 rc = 1;
00167 goto exit;
00168 }
00169
00170 switch(ut) {
00171 case URL_IS_PATH:
00172 case URL_IS_UNKNOWN:
00173 #if HAVE_MMAP
00174 if (pid == 0) {
00175 DIGEST_CTX ctx;
00176 void * mapped;
00177
00178 mapped = mmap(NULL, fsize, PROT_READ, MAP_SHARED, fdno, 0);
00179 if (mapped == (void *)-1) {
00180 xx = close(fdno);
00181 rc = 1;
00182 break;
00183 }
00184
00185 #ifdef MADV_SEQUENTIAL
00186 xx = madvise(mapped, fsize, MADV_SEQUENTIAL);
00187 #endif
00188
00189 ctx = rpmDigestInit(PGPHASHALGO_MD5, RPMDIGEST_NONE);
00190 xx = rpmDigestUpdate(ctx, mapped, fsize);
00191 xx = rpmDigestFinal(ctx, (void **)&md5sum, &md5len, asAscii);
00192 xx = munmap(mapped, fsize);
00193 xx = close(fdno);
00194 break;
00195 }
00196 #endif
00197 case URL_IS_FTP:
00198 case URL_IS_HTTP:
00199 case URL_IS_DASH:
00200 default:
00201
00202 fd = (pid != 0) ? fdDup(fdno) : Fopen(fn, "r.ufdio");
00203 (void) close(fdno);
00204 if (fd == NULL || Ferror(fd)) {
00205 rc = 1;
00206 if (fd != NULL)
00207 (void) Fclose(fd);
00208 break;
00209 }
00210
00211 fdInitDigest(fd, PGPHASHALGO_MD5, 0);
00212 fsize = 0;
00213 while ((rc = Fread(buf, sizeof(buf[0]), sizeof(buf), fd)) > 0)
00214 fsize += rc;
00215 fdFiniDigest(fd, PGPHASHALGO_MD5, (void **)&md5sum, &md5len, asAscii);
00216 if (Ferror(fd))
00217 rc = 1;
00218
00219 (void) Fclose(fd);
00220 break;
00221 }
00222
00223
00224 if (pid) {
00225 int status;
00226 (void) waitpid(pid, &status, 0);
00227 if (!WIFEXITED(status) || WEXITSTATUS(status))
00228 rc = 1;
00229 }
00230
00231 exit:
00232
00233 if (fsizep)
00234 *fsizep = fsize;
00235 if (!rc)
00236 memcpy(digest, md5sum, md5len);
00237
00238 md5sum = _free(md5sum);
00239
00240 return rc;
00241 }
00242
00243
00244
00245 int _noDirTokens = 0;
00246
00247
00248
00249 static int dncmp(const void * a, const void * b)
00250
00251 {
00252 const char *const * first = a;
00253 const char *const * second = b;
00254 return strcmp(*first, *second);
00255 }
00256
00257
00258
00259 void compressFilelist(Header h)
00260 {
00261 HGE_t hge = (HGE_t)headerGetEntryMinMemory;
00262 HAE_t hae = (HAE_t)headerAddEntry;
00263 HRE_t hre = (HRE_t)headerRemoveEntry;
00264 HFD_t hfd = headerFreeData;
00265 char ** fileNames;
00266 const char ** dirNames;
00267 const char ** baseNames;
00268 int_32 * dirIndexes;
00269 rpmTagType fnt;
00270 int count;
00271 int i, xx;
00272 int dirIndex = -1;
00273
00274
00275
00276
00277
00278
00279
00280 if (headerIsEntry(h, RPMTAG_DIRNAMES)) {
00281 xx = hre(h, RPMTAG_OLDFILENAMES);
00282 return;
00283 }
00284
00285 if (!hge(h, RPMTAG_OLDFILENAMES, &fnt, (void **) &fileNames, &count))
00286 return;
00287 if (fileNames == NULL || count <= 0)
00288 return;
00289
00290 dirNames = alloca(sizeof(*dirNames) * count);
00291 baseNames = alloca(sizeof(*dirNames) * count);
00292 dirIndexes = alloca(sizeof(*dirIndexes) * count);
00293
00294 if (fileNames[0][0] != '/') {
00295
00296 dirIndex = 0;
00297 dirNames[dirIndex] = "";
00298 for (i = 0; i < count; i++) {
00299 dirIndexes[i] = dirIndex;
00300 baseNames[i] = fileNames[i];
00301 }
00302 goto exit;
00303 }
00304
00305
00306 for (i = 0; i < count; i++) {
00307 const char ** needle;
00308 char savechar;
00309 char * baseName;
00310 int len;
00311
00312 if (fileNames[i] == NULL)
00313 continue;
00314 baseName = strrchr(fileNames[i], '/') + 1;
00315 len = baseName - fileNames[i];
00316 needle = dirNames;
00317 savechar = *baseName;
00318 *baseName = '\0';
00319
00320 if (dirIndex < 0 ||
00321 (needle = bsearch(&fileNames[i], dirNames, dirIndex + 1, sizeof(dirNames[0]), dncmp)) == NULL) {
00322 char *s = alloca(len + 1);
00323 memcpy(s, fileNames[i], len + 1);
00324 s[len] = '\0';
00325 dirIndexes[i] = ++dirIndex;
00326 dirNames[dirIndex] = s;
00327 } else
00328 dirIndexes[i] = needle - dirNames;
00329
00330
00331 *baseName = savechar;
00332 baseNames[i] = baseName;
00333 }
00334
00335
00336 exit:
00337 if (count > 0) {
00338 xx = hae(h, RPMTAG_DIRINDEXES, RPM_INT32_TYPE, dirIndexes, count);
00339 xx = hae(h, RPMTAG_BASENAMES, RPM_STRING_ARRAY_TYPE,
00340 baseNames, count);
00341 xx = hae(h, RPMTAG_DIRNAMES, RPM_STRING_ARRAY_TYPE,
00342 dirNames, dirIndex + 1);
00343 }
00344
00345 fileNames = hfd(fileNames, fnt);
00346
00347 xx = hre(h, RPMTAG_OLDFILENAMES);
00348 }
00349
00350
00351 void rpmfiBuildFNames(Header h, rpmTag tagN,
00352 const char *** fnp, int * fcp)
00353 {
00354 HGE_t hge = (HGE_t)headerGetEntryMinMemory;
00355 HFD_t hfd = headerFreeData;
00356 const char ** baseNames;
00357 const char ** dirNames;
00358 int * dirIndexes;
00359 int count;
00360 const char ** fileNames;
00361 int size;
00362 rpmTag dirNameTag = 0;
00363 rpmTag dirIndexesTag = 0;
00364 rpmTagType bnt, dnt;
00365 char * t;
00366 int i, xx;
00367
00368 if (tagN == RPMTAG_BASENAMES) {
00369 dirNameTag = RPMTAG_DIRNAMES;
00370 dirIndexesTag = RPMTAG_DIRINDEXES;
00371 } else if (tagN == RPMTAG_ORIGBASENAMES) {
00372 dirNameTag = RPMTAG_ORIGDIRNAMES;
00373 dirIndexesTag = RPMTAG_ORIGDIRINDEXES;
00374 }
00375
00376 if (!hge(h, tagN, &bnt, (void **) &baseNames, &count)) {
00377 if (fnp) *fnp = NULL;
00378 if (fcp) *fcp = 0;
00379 return;
00380 }
00381
00382 xx = hge(h, dirNameTag, &dnt, (void **) &dirNames, NULL);
00383 xx = hge(h, dirIndexesTag, NULL, (void **) &dirIndexes, &count);
00384
00385 size = sizeof(*fileNames) * count;
00386 for (i = 0; i < count; i++)
00387 size += strlen(baseNames[i]) + strlen(dirNames[dirIndexes[i]]) + 1;
00388
00389 fileNames = xmalloc(size);
00390 t = ((char *) fileNames) + (sizeof(*fileNames) * count);
00391
00392 for (i = 0; i < count; i++) {
00393 fileNames[i] = t;
00394 t = stpcpy( stpcpy(t, dirNames[dirIndexes[i]]), baseNames[i]);
00395 *t++ = '\0';
00396 }
00397
00398 baseNames = hfd(baseNames, bnt);
00399 dirNames = hfd(dirNames, dnt);
00400
00401
00402 if (fnp)
00403 *fnp = fileNames;
00404 else
00405 fileNames = _free(fileNames);
00406
00407 if (fcp) *fcp = count;
00408 }
00409
00410 void expandFilelist(Header h)
00411 {
00412 HAE_t hae = (HAE_t)headerAddEntry;
00413 HRE_t hre = (HRE_t)headerRemoveEntry;
00414 const char ** fileNames = NULL;
00415 int count = 0;
00416 int xx;
00417
00418
00419 if (!headerIsEntry(h, RPMTAG_OLDFILENAMES)) {
00420 rpmfiBuildFNames(h, RPMTAG_BASENAMES, &fileNames, &count);
00421 if (fileNames == NULL || count <= 0)
00422 return;
00423 xx = hae(h, RPMTAG_OLDFILENAMES, RPM_STRING_ARRAY_TYPE,
00424 fileNames, count);
00425 fileNames = _free(fileNames);
00426 }
00427
00428
00429 xx = hre(h, RPMTAG_DIRNAMES);
00430 xx = hre(h, RPMTAG_BASENAMES);
00431 xx = hre(h, RPMTAG_DIRINDEXES);
00432 }
00433
00434
00435
00436
00437
00438 void providePackageNVR(Header h)
00439 {
00440 HGE_t hge = (HGE_t)headerGetEntryMinMemory;
00441 HFD_t hfd = headerFreeData;
00442 const char *name, *version, *release;
00443 int_32 * epoch;
00444 const char *pEVR;
00445 char *p;
00446 int_32 pFlags = RPMSENSE_EQUAL;
00447 const char ** provides = NULL;
00448 const char ** providesEVR = NULL;
00449 rpmTagType pnt, pvt;
00450 int_32 * provideFlags = NULL;
00451 int providesCount;
00452 int i, xx;
00453 int bingo = 1;
00454
00455
00456 xx = headerNVR(h, &name, &version, &release);
00457 if (!(name && version && release))
00458 return;
00459 pEVR = p = alloca(21 + strlen(version) + 1 + strlen(release) + 1);
00460 *p = '\0';
00461 if (hge(h, RPMTAG_EPOCH, NULL, (void **) &epoch, NULL)) {
00462 sprintf(p, "%d:", *epoch);
00463 while (*p != '\0')
00464 p++;
00465 }
00466 (void) stpcpy( stpcpy( stpcpy(p, version) , "-") , release);
00467
00468
00469
00470
00471
00472 if (!hge(h, RPMTAG_PROVIDENAME, &pnt, (void **) &provides, &providesCount))
00473 goto exit;
00474
00475
00476
00477
00478 if (!hge(h, RPMTAG_PROVIDEVERSION, &pvt, (void **) &providesEVR, NULL)) {
00479 for (i = 0; i < providesCount; i++) {
00480 char * vdummy = "";
00481 int_32 fdummy = RPMSENSE_ANY;
00482 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEVERSION, RPM_STRING_ARRAY_TYPE,
00483 &vdummy, 1);
00484 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEFLAGS, RPM_INT32_TYPE,
00485 &fdummy, 1);
00486 }
00487 goto exit;
00488 }
00489
00490 xx = hge(h, RPMTAG_PROVIDEFLAGS, NULL, (void **) &provideFlags, NULL);
00491
00492
00493 if (provides && providesEVR && provideFlags)
00494 for (i = 0; i < providesCount; i++) {
00495 if (!(provides[i] && providesEVR[i]))
00496 continue;
00497 if (!(provideFlags[i] == RPMSENSE_EQUAL &&
00498 !strcmp(name, provides[i]) && !strcmp(pEVR, providesEVR[i])))
00499 continue;
00500 bingo = 0;
00501 break;
00502 }
00503
00504
00505 exit:
00506 provides = hfd(provides, pnt);
00507 providesEVR = hfd(providesEVR, pvt);
00508
00509 if (bingo) {
00510 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDENAME, RPM_STRING_ARRAY_TYPE,
00511 &name, 1);
00512 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEFLAGS, RPM_INT32_TYPE,
00513 &pFlags, 1);
00514 xx = headerAddOrAppendEntry(h, RPMTAG_PROVIDEVERSION, RPM_STRING_ARRAY_TYPE,
00515 &pEVR, 1);
00516 }
00517 }
00518
00519 void legacyRetrofit(Header h, const struct rpmlead * lead)
00520 {
00521 const char * prefix;
00522
00523
00524
00525
00526
00527
00528 if (headerIsEntry(h, RPMTAG_FILEUSERNAME))
00529 (void) headerRemoveEntry(h, RPMTAG_FILEUIDS);
00530 if (headerIsEntry(h, RPMTAG_FILEGROUPNAME))
00531 (void) headerRemoveEntry(h, RPMTAG_FILEGIDS);
00532
00533
00534
00535
00536
00537
00538
00539
00540 if (headerGetEntry(h, RPMTAG_DEFAULTPREFIX, NULL, (void **) &prefix, NULL))
00541 {
00542 const char * nprefix = stripTrailingChar(alloca_strdup(prefix), '/');
00543 (void) headerAddEntry(h, RPMTAG_PREFIXES, RPM_STRING_ARRAY_TYPE,
00544 &nprefix, 1);
00545 }
00546
00547
00548
00549
00550
00551
00552
00553
00554 if (lead->major < 4)
00555 compressFilelist(h);
00556
00557
00558 if (lead->type == RPMLEAD_SOURCE) {
00559 int_32 one = 1;
00560 if (!headerIsEntry(h, RPMTAG_SOURCEPACKAGE))
00561 (void) headerAddEntry(h, RPMTAG_SOURCEPACKAGE, RPM_INT32_TYPE,
00562 &one, 1);
00563 } else if (lead->major < 4) {
00564
00565 providePackageNVR(h);
00566 }
00567 }