comparison: openpkg/openpkg.c
openpkg/openpkg.c
- changeset 709
- 84a9f800fa37
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| -1:000000000000 | 0:d7142d5603b0 |
|---|---|
| 1 /* | |
| 2 ** openpkg.c -- OpenPKG Frontend | |
| 3 ** Copyright (c) 2000-2012 OpenPKG GmbH <http://openpkg.com/> | |
| 4 ** | |
| 5 ** This software is property of the OpenPKG GmbH, DE MUC HRB 160208. | |
| 6 ** All rights reserved. Licenses which grant limited permission to use, | |
| 7 ** copy, modify and distribute this software are available from the | |
| 8 ** OpenPKG GmbH. | |
| 9 ** | |
| 10 ** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED | |
| 11 ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 12 ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 13 ** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR | |
| 14 ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 15 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 16 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
| 17 ** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 18 ** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| 19 ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
| 20 ** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 21 ** SUCH DAMAGE. | |
| 22 */ | |
| 23 | |
| 24 /* program information */ | |
| 25 #define LICENSE \ | |
| 26 "Copyright (c) 2000-2012 OpenPKG GmbH <http://openpkg.com/>\n" \ | |
| 27 "\n" \ | |
| 28 "This software is property of the OpenPKG GmbH, DE MUC HRB 160208.\n" \ | |
| 29 "All rights reserved. Licenses which grant limited permission to use,\n" \ | |
| 30 "copy, modify and distribute this software are available from the\n" \ | |
| 31 "OpenPKG GmbH.\n" \ | |
| 32 "\n" \ | |
| 33 "THIS SOFTWARE IS PROVIDED \"AS IS\" AND ANY EXPRESSED OR IMPLIED\n" \ | |
| 34 "WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\n" \ | |
| 35 "MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n" \ | |
| 36 "IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR\n" \ | |
| 37 "CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n" \ | |
| 38 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n" \ | |
| 39 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF\n" \ | |
| 40 "USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n" \ | |
| 41 "ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,\n" \ | |
| 42 "OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT\n" \ | |
| 43 "OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\n" \ | |
| 44 "SUCH DAMAGE.\n" | |
| 45 | |
| 46 /* system includes */ | |
| 47 #include <stdio.h> | |
| 48 #include <stdlib.h> | |
| 49 #include <stdarg.h> | |
| 50 #include <string.h> | |
| 51 #include <sys/types.h> | |
| 52 #include <sys/param.h> | |
| 53 #include <sys/stat.h> | |
| 54 #include <pwd.h> | |
| 55 #include <grp.h> | |
| 56 #include <unistd.h> | |
| 57 #include <errno.h> | |
| 58 | |
| 59 /* sanity check compilation */ | |
| 60 #ifndef OPENPKG_PREFIX | |
| 61 #error OpenPKG instance prefix not defined | |
| 62 #endif | |
| 63 #ifndef OPENPKG_SUSR | |
| 64 #error OpenPKG super user not defined | |
| 65 #endif | |
| 66 #ifndef OPENPKG_MUSR | |
| 67 #error OpenPKG management user not defined | |
| 68 #endif | |
| 69 | |
| 70 /* platform specifics */ | |
| 71 #if defined(OPENPKG_PLATFORM_FREEBSD) || \ | |
| 72 defined(OPENPKG_PLATFORM_NETBSD) || \ | |
| 73 defined(OPENPKG_PLATFORM_OPENBSD) || \ | |
| 74 defined(OPENPKG_PLATFORM_SUNOS) || \ | |
| 75 defined(OPENPKG_PLATFORM_LINUX) || \ | |
| 76 defined(OPENPKG_PLATFORM_DARWIN) || \ | |
| 77 defined(OPENPKG_PLATFORM_AIX) || \ | |
| 78 defined(OPENPKG_PLATFORM_IRIX) || \ | |
| 79 defined(OPENPKG_PLATFORM_HPUX) | |
| 80 #define HAVE_INITGROUPS | |
| 81 #endif | |
| 82 | |
| 83 /* global debug enable flag */ | |
| 84 static int debug_enable = 0; | |
| 85 | |
| 86 /* helper function: emulate (still less portable) setenv(3) via (more portable) putenv(3) */ | |
| 87 static int my_setenv(const char *name, const char *value, int overwrite) | |
| 88 { | |
| 89 char *pair; | |
| 90 | |
| 91 if (overwrite == 0 && getenv(name) != NULL) | |
| 92 return 0; | |
| 93 if ((pair = malloc(strlen(name) + 1 + strlen(value) + 1)) == NULL) | |
| 94 return -1; | |
| 95 strcpy(pair, name); | |
| 96 strcat(pair, "="); | |
| 97 strcat(pair, value); | |
| 98 putenv(pair); | |
| 99 return 0; | |
| 100 } | |
| 101 | |
| 102 /* helper function for printing a warning message */ | |
| 103 static void warn(const char *fmt, ...) | |
| 104 { | |
| 105 va_list ap; | |
| 106 | |
| 107 va_start(ap, fmt); | |
| 108 fprintf(stderr, "openpkg:WARNING: "); | |
| 109 vfprintf(stderr, fmt, ap); | |
| 110 fprintf(stderr, "\n"); | |
| 111 va_end(ap); | |
| 112 return; | |
| 113 } | |
| 114 | |
| 115 /* helper function for printing a debug message */ | |
| 116 static void debug(const char *fmt, ...) | |
| 117 { | |
| 118 va_list ap; | |
| 119 | |
| 120 va_start(ap, fmt); | |
| 121 if (debug_enable) { | |
| 122 fprintf(stderr, "openpkg:DEBUG: "); | |
| 123 vfprintf(stderr, fmt, ap); | |
| 124 fprintf(stderr, "\n"); | |
| 125 } | |
| 126 va_end(ap); | |
| 127 return; | |
| 128 } | |
| 129 | |
| 130 /* helper function for printing a fatal message and exit */ | |
| 131 static void fatal(const char *fmt, ...) | |
| 132 { | |
| 133 va_list ap; | |
| 134 | |
| 135 va_start(ap, fmt); | |
| 136 fprintf(stderr, "openpkg:ERROR: "); | |
| 137 vfprintf(stderr, fmt, ap); | |
| 138 fprintf(stderr, "\n"); | |
| 139 va_end(ap); | |
| 140 exit(1); | |
| 141 return; | |
| 142 } | |
| 143 | |
| 144 /* adjust process privileges */ | |
| 145 static void adjust_privileges(uid_t uid, gid_t gid, int login) | |
| 146 { | |
| 147 struct passwd *pw; | |
| 148 char cwd[MAXPATHLEN]; | |
| 149 | |
| 150 /* optionally emulate a more complete login */ | |
| 151 if (login) { | |
| 152 /* determine information about user id */ | |
| 153 if ((pw = getpwuid(uid)) == NULL) | |
| 154 fatal("unable to resolve user id \"%d\": %s", uid, strerror(errno)); | |
| 155 | |
| 156 /* reset some essential environment variables */ | |
| 157 my_setenv("LOGNAME", pw->pw_name, 1); | |
| 158 my_setenv("USER", pw->pw_name, 1); | |
| 159 my_setenv("SHELL", pw->pw_shell, 1); | |
| 160 my_setenv("HOME", pw->pw_dir, 1); | |
| 161 | |
| 162 #ifdef HAVE_INITGROUPS | |
| 163 /* initialize complete group access list */ | |
| 164 if (initgroups(pw->pw_name, pw->pw_gid) == -1) | |
| 165 fatal("failed to initialize access group list via initgroups(3): %s", strerror(errno)); | |
| 166 #endif | |
| 167 } | |
| 168 | |
| 169 /* switch to group id (first) */ | |
| 170 if (setgid(gid) == -1) | |
| 171 fatal("failed to set group id via setgid(2): %s", strerror(errno)); | |
| 172 | |
| 173 /* switch to user id (second) */ | |
| 174 if (setuid(uid) == -1) | |
| 175 fatal("failed to set user id via setuid(2): %s", strerror(errno)); | |
| 176 | |
| 177 /* in case the current working directory is NO LONGER accessible, | |
| 178 try to switch to the home directory of the target identity to | |
| 179 prevent failures in subsequently called programs (e.g. GNU bash) */ | |
| 180 if (login) { | |
| 181 if (getcwd(cwd, sizeof(cwd)) == NULL) { | |
| 182 warn("current working directory is no longer accessible -- switching to \"%s\"", pw->pw_dir); | |
| 183 if (chdir(pw->pw_dir) == -1) | |
| 184 fatal("unable to chdir(2) to \"%s\": %s", pw->pw_dir, strerror(errno)); | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 return; | |
| 189 } | |
| 190 | |
| 191 /* check whether caller is an explictly configured management user */ | |
| 192 static int check_whether_is_manager(uid_t my_uid, gid_t my_gid, uid_t m_uid, gid_t m_gid) | |
| 193 { | |
| 194 char buf[1024]; | |
| 195 char *username; | |
| 196 char *groupname; | |
| 197 char *filename; | |
| 198 struct stat sb; | |
| 199 char *cp; | |
| 200 FILE *fp; | |
| 201 struct passwd *pw; | |
| 202 struct group *gr; | |
| 203 int i; | |
| 204 int ok_uid; | |
| 205 int ok_gid; | |
| 206 int is_manager; | |
| 207 | |
| 208 is_manager = 0; | |
| 209 | |
| 210 /* path to the managers configuration file */ | |
| 211 filename = OPENPKG_PREFIX "/etc/openpkg/managers"; | |
| 212 | |
| 213 /* check permissions of file */ | |
| 214 if (stat(filename, &sb) == -1) { | |
| 215 warn("unable to determine information about configuration" | |
| 216 " file \"%s\": %s -- ignoring file", filename, strerror(errno)); | |
| 217 return 0; | |
| 218 } | |
| 219 if (sb.st_uid != m_uid) { | |
| 220 warn("invalid owner user id %d (expected %d) on configuration" | |
| 221 " file \"%s\" -- ignoring file", sb.st_uid, m_uid, filename); | |
| 222 return 0; | |
| 223 } | |
| 224 if (sb.st_gid != m_gid) { | |
| 225 warn("invalid owner group id %d (expected %d) on configuration" | |
| 226 " file \"%s\" -- ignoring file", sb.st_gid, m_gid, filename); | |
| 227 return 0; | |
| 228 } | |
| 229 if (sb.st_mode != (S_IFREG|S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH)) { | |
| 230 warn("invalid permissions on configuration" | |
| 231 " file \"%s\" -- ignoring file", filename); | |
| 232 return 0; | |
| 233 } | |
| 234 | |
| 235 /* parse configuration file */ | |
| 236 if ((fp = fopen(filename, "r")) == NULL) { | |
| 237 warn("unable to open configuration file \"%s\": %s -- ignoring file", filename, strerror(errno)); | |
| 238 return 0; | |
| 239 } | |
| 240 while ((cp = fgets(buf, sizeof(buf), fp)) != NULL) { | |
| 241 /* parse entry as "<username>[:<groupname>]" where both | |
| 242 <username> and <groupname> can be set and default to "*" | |
| 243 to indicate an arbitrary user or group */ | |
| 244 if ((i = strlen(buf)) == 0) { | |
| 245 warn("unexpected empty buffer during parsing of configuration file \"%\"", filename); | |
| 246 break; | |
| 247 } | |
| 248 if (i >= sizeof(buf)) { | |
| 249 warn("unexpected buffer overflow during parsing of configuration file \"%\"", filename); | |
| 250 break; | |
| 251 } | |
| 252 if (buf[i-1] != '\r' && buf[i-1] != '\n') { | |
| 253 warn("unexpected non-newline-terminated line found during parsing of configuration file \"%\"", filename); | |
| 254 break; | |
| 255 } | |
| 256 username = buf + strspn(buf, " \t"); | |
| 257 cp = username + strcspn(username, " \t#\r\n"); | |
| 258 *cp = '\0'; | |
| 259 if (username[0] == '#' || username[0] == '\r' || username[0] == '\n' || username[0] == '\0') | |
| 260 continue; | |
| 261 groupname = "*"; | |
| 262 if ((cp = strchr(username, ':')) != NULL) { | |
| 263 *cp++ = '\0'; | |
| 264 groupname = cp; | |
| 265 } | |
| 266 debug("parsing result: username=\"%s\" groupname=\"%s\"", username, groupname); | |
| 267 | |
| 268 /* check whether UID is ok */ | |
| 269 ok_uid = 0; | |
| 270 if (strcmp(username, "*") == 0) | |
| 271 ok_uid = 1; | |
| 272 else { | |
| 273 if ((pw = getpwnam(username)) == NULL) { | |
| 274 warn("invalid username \"%s\" in \"%s\"", username, filename); | |
| 275 continue; | |
| 276 } | |
| 277 if (pw->pw_uid == my_uid) | |
| 278 ok_uid = 1; | |
| 279 } | |
| 280 | |
| 281 /* check whether GID is ok */ | |
| 282 ok_gid = 0; | |
| 283 if (strcmp(groupname, "*") == 0) | |
| 284 ok_gid = 1; | |
| 285 else { | |
| 286 if ((gr = getgrnam(groupname)) == NULL) { | |
| 287 warn("invalid groupname \"%s\" in \"%s\"", groupname, filename); | |
| 288 continue; | |
| 289 } | |
| 290 if (gr->gr_gid == my_gid) | |
| 291 ok_gid = 1; | |
| 292 } | |
| 293 | |
| 294 /* if both UID and GID are ok, user is manager */ | |
| 295 debug("matching: username ok = %s, groupname ok = %s", ok_uid ? "yes" : "no", ok_gid ? "yes" : "no"); | |
| 296 if (ok_uid && ok_gid) { | |
| 297 is_manager = 1; | |
| 298 break; | |
| 299 } | |
| 300 } | |
| 301 fclose(fp); | |
| 302 return is_manager; | |
| 303 } | |
| 304 | |
| 305 /* check whether command requires super-user privileges */ | |
| 306 static int check_whether_require_superuser(int argc, char *argv[]) | |
| 307 { | |
| 308 int require_superuser; | |
| 309 int i, j; | |
| 310 | |
| 311 require_superuser = 0; | |
| 312 if (argc > 1 && strcmp(argv[1], "rpm") == 0) { | |
| 313 for (i = 2; i < argc; i++) { | |
| 314 if (strcmp(argv[i], "--") == 0) | |
| 315 break; | |
| 316 else if ( strcmp(argv[i], "--erase") == 0 | |
| 317 || strcmp(argv[i], "--freshen") == 0 | |
| 318 || strcmp(argv[i], "--install") == 0 | |
| 319 || strcmp(argv[i], "--upgrade") == 0 | |
| 320 || strcmp(argv[i], "--import") == 0 | |
| 321 || strcmp(argv[i], "--initdb") == 0 | |
| 322 || strcmp(argv[i], "--rebuilddb") == 0 | |
| 323 || strcmp(argv[i], "--db-build") == 0 | |
| 324 || strcmp(argv[i], "--db-rebuild") == 0 | |
| 325 || strcmp(argv[i], "--db-cleanup") == 0 | |
| 326 || strcmp(argv[i], "--db-fixate") == 0 | |
| 327 || strcmp(argv[i], "--setperms") == 0 | |
| 328 || strcmp(argv[i], "--setugids") == 0) { | |
| 329 require_superuser = 1; | |
| 330 break; | |
| 331 } | |
| 332 else if ( argv[i][0] == '-' | |
| 333 && argv[i][1] != '-' | |
| 334 && argv[i][1] != 'b' | |
| 335 && argv[i][1] != 't' | |
| 336 ) { | |
| 337 for (j = 1; argv[i][j] != '\0'; j++) { | |
| 338 if ( ( argv[i][j] == 'q' | |
| 339 || argv[i][j] == 'K') | |
| 340 && argv[i][j+1] != '\0') { | |
| 341 j++; | |
| 342 continue; | |
| 343 } | |
| 344 else if ( argv[i][j] == 'i' | |
| 345 || argv[i][j] == 'U' | |
| 346 || argv[i][j] == 'F' | |
| 347 || argv[i][j] == 'V' | |
| 348 || argv[i][j] == 'e') { | |
| 349 require_superuser = 1; | |
| 350 break; | |
| 351 } | |
| 352 } | |
| 353 if (require_superuser) | |
| 354 break; | |
| 355 } | |
| 356 } | |
| 357 } | |
| 358 else if (argc > 1 && strcmp(argv[1], "rc") == 0) { | |
| 359 require_superuser = 1; | |
| 360 for (i = 2; i < argc; i++) { | |
| 361 if (strcmp(argv[i], "--") == 0) | |
| 362 break; | |
| 363 else if ( strcmp(argv[i], "-p") == 0 | |
| 364 || strcmp(argv[i], "--print") == 0 | |
| 365 || strcmp(argv[i], "-e") == 0 | |
| 366 || strcmp(argv[i], "--eval") == 0 | |
| 367 || strcmp(argv[i], "-q") == 0 | |
| 368 || strcmp(argv[i], "--query") == 0 | |
| 369 || strcmp(argv[i], "-c") == 0 | |
| 370 || strcmp(argv[i], "--config") == 0) { | |
| 371 require_superuser = 0; | |
| 372 break; | |
| 373 } | |
| 374 } | |
| 375 } | |
| 376 return require_superuser; | |
| 377 } | |
| 378 | |
| 379 /* main program */ | |
| 380 int main(int argc, char **argv, char **envp) | |
| 381 { | |
| 382 int keep_original_privileges; | |
| 383 int is_manager; | |
| 384 int require_superuser; | |
| 385 uid_t my_uid, my_euid; | |
| 386 gid_t my_gid, my_egid; | |
| 387 uid_t m_uid; | |
| 388 gid_t m_gid; | |
| 389 uid_t s_uid; | |
| 390 gid_t s_gid; | |
| 391 struct passwd *pw; | |
| 392 struct group *gr; | |
| 393 int dry_run; | |
| 394 int license; | |
| 395 | |
| 396 /* parse command line options */ | |
| 397 license = 0; | |
| 398 dry_run = 0; | |
| 399 keep_original_privileges = 0; | |
| 400 if (argc <= 0) | |
| 401 abort(); | |
| 402 argv++; argc--; | |
| 403 while (argc > 0) { | |
| 404 if (argv[0][0] != '-') | |
| 405 break; | |
| 406 else if (strcmp(argv[0], "--") == 0) { | |
| 407 argv++; argc--; | |
| 408 break; | |
| 409 } | |
| 410 else if (strcmp(argv[0], "--license") == 0) { | |
| 411 license = 1; | |
| 412 argv++; argc--; | |
| 413 continue; | |
| 414 } | |
| 415 else if (strcmp(argv[0], "--debug") == 0) { | |
| 416 debug_enable = 1; | |
| 417 argv++; argc--; | |
| 418 continue; | |
| 419 } | |
| 420 else if (strcmp(argv[0], "--dry-run") == 0) { | |
| 421 dry_run = 1; | |
| 422 argv++; argc--; | |
| 423 continue; | |
| 424 } | |
| 425 else if (strcmp(argv[0], "--keep-privileges") == 0) { | |
| 426 keep_original_privileges = 1; | |
| 427 argv++; argc--; | |
| 428 continue; | |
| 429 } | |
| 430 break; | |
| 431 } | |
| 432 argv--; argc++; | |
| 433 | |
| 434 /* display stand-alone license information */ | |
| 435 if (license) { | |
| 436 fprintf(stdout, "%s", LICENSE); | |
| 437 exit(0); | |
| 438 } | |
| 439 | |
| 440 /* determine our current real and effective user/group ids */ | |
| 441 my_uid = getuid(); | |
| 442 my_gid = getgid(); | |
| 443 my_euid = geteuid(); | |
| 444 my_egid = getegid(); | |
| 445 if ((pw = getpwuid(my_uid)) == NULL) | |
| 446 fatal("unable to resolve current user id %d: %s", my_uid, strerror(errno)); | |
| 447 if ((gr = getgrgid(my_gid)) == NULL) | |
| 448 fatal("unable to resolve current group id %d: %s", my_gid, strerror(errno)); | |
| 449 debug("current-user: usr=%s uid=%d euid=%d grp=%s gid=%d egid=%d", | |
| 450 pw->pw_name, my_uid, my_euid, gr->gr_name, my_gid, my_egid); | |
| 451 | |
| 452 /* determine super user/group id */ | |
| 453 if ((pw = getpwnam(OPENPKG_SUSR)) == NULL) | |
| 454 fatal("unable to resolve OpenPKG superuser username \"%s\": %s", OPENPKG_SUSR, strerror(errno)); | |
| 455 s_uid = pw->pw_uid; | |
| 456 s_gid = pw->pw_gid; | |
| 457 debug("super-user: s_usr=%s s_uid=%d s_gid=%d", OPENPKG_SUSR, s_uid, s_gid); | |
| 458 | |
| 459 /* determine management user/group id */ | |
| 460 if ((pw = getpwnam(OPENPKG_MUSR)) == NULL) | |
| 461 fatal("unable to resolve OpenPKG management username \"%s\": %s", OPENPKG_MUSR, strerror(errno)); | |
| 462 m_uid = pw->pw_uid; | |
| 463 m_gid = pw->pw_gid; | |
| 464 debug("management-user: m_grp=%s m_uid=%d m_gid=%d", OPENPKG_MUSR, m_uid, m_gid); | |
| 465 | |
| 466 /* determine whether caller is explicitly configured as a management user */ | |
| 467 is_manager = 0; | |
| 468 if (!keep_original_privileges) | |
| 469 is_manager = check_whether_is_manager(my_uid, my_gid, m_uid, m_gid); | |
| 470 debug("current user is manager: %s", is_manager ? "yes" : "no"); | |
| 471 | |
| 472 /* determine whether command requires super-user privileges */ | |
| 473 require_superuser = check_whether_require_superuser(argc, argv); | |
| 474 debug("current command requires super user privileges: %s", require_superuser ? "yes" : "no"); | |
| 475 | |
| 476 /* adjust privileges according to determined information */ | |
| 477 if (!keep_original_privileges && require_superuser && is_manager && my_euid == 0) { | |
| 478 /* increase privileges to super user */ | |
| 479 debug("increase privileges to super user"); | |
| 480 adjust_privileges(s_uid, s_gid, 1); | |
| 481 } | |
| 482 else if (!keep_original_privileges && !require_superuser && is_manager && my_euid == 0) { | |
| 483 /* decrease privileges to management user */ | |
| 484 debug("decrease privileges to management user"); | |
| 485 adjust_privileges(m_uid, m_gid, 1); | |
| 486 } | |
| 487 else /* keep_original_privileges || !is_manager */ { | |
| 488 /* drop effective privileges for current user*/ | |
| 489 debug("drop effective privileges for current user"); | |
| 490 adjust_privileges(my_uid, my_gid, 0); | |
| 491 } | |
| 492 | |
| 493 /* pass-through control to real Execution Frontend (shell script) */ | |
| 494 argv[0] = OPENPKG_PREFIX "/lib/openpkg/openpkg"; | |
| 495 debug("execute \"%s\"", argv[0]); | |
| 496 if (!dry_run) { | |
| 497 if (execve(argv[0], argv, envp) == -1) | |
| 498 fatal("failed to execute \"%s\": %s", argv[0], strerror(errno)); | |
| 499 /* NOT REACHED */ | |
| 500 fatal("INTERNAL ERROR"); | |
| 501 } | |
| 502 return 0; | |
| 503 } | |
| 504 |
