Annotation of embedaddon/sudo/plugins/sudoers/testsudoers.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (c) 1996, 1998-2005, 2007-2011
! 3: * Todd C. Miller <Todd.Miller@courtesan.com>
! 4: *
! 5: * Permission to use, copy, modify, and distribute this software for any
! 6: * purpose with or without fee is hereby granted, provided that the above
! 7: * copyright notice and this permission notice appear in all copies.
! 8: *
! 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 16: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 17: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 18: *
! 19: * Sponsored in part by the Defense Advanced Research Projects
! 20: * Agency (DARPA) and Air Force Research Laboratory, Air Force
! 21: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
! 22: */
! 23:
! 24: #define _SUDO_MAIN
! 25:
! 26: #include <config.h>
! 27:
! 28: #include <sys/param.h>
! 29: #include <sys/types.h>
! 30: #include <sys/stat.h>
! 31: #include <sys/socket.h>
! 32: #include <stdio.h>
! 33: #ifdef STDC_HEADERS
! 34: # include <stdlib.h>
! 35: # include <stddef.h>
! 36: #else
! 37: # ifdef HAVE_STDLIB_H
! 38: # include <stdlib.h>
! 39: # endif
! 40: #endif /* STDC_HEADERS */
! 41: #ifdef HAVE_STRING_H
! 42: # include <string.h>
! 43: #endif /* HAVE_STRING_H */
! 44: #ifdef HAVE_STRINGS_H
! 45: # include <strings.h>
! 46: #endif /* HAVE_STRINGS_H */
! 47: #ifdef HAVE_UNISTD_H
! 48: # include <unistd.h>
! 49: #endif /* HAVE_UNISTD_H */
! 50: #ifdef HAVE_FNMATCH
! 51: # include <fnmatch.h>
! 52: #endif /* HAVE_FNMATCH */
! 53: #ifdef HAVE_NETGROUP_H
! 54: # include <netgroup.h>
! 55: #endif /* HAVE_NETGROUP_H */
! 56: #include <ctype.h>
! 57: #include <errno.h>
! 58: #include <netinet/in.h>
! 59: #include <arpa/inet.h>
! 60: #include <netdb.h>
! 61:
! 62: #include "tsgetgrpw.h"
! 63: #include "sudoers.h"
! 64: #include "interfaces.h"
! 65: #include "parse.h"
! 66: #include <gram.h>
! 67:
! 68: #ifndef HAVE_FNMATCH
! 69: # include "compat/fnmatch.h"
! 70: #endif /* HAVE_FNMATCH */
! 71:
! 72: /*
! 73: * Function Prototypes
! 74: */
! 75: int print_alias(void *, void *);
! 76: void dump_sudoers(void);
! 77: void print_defaults(void);
! 78: void print_privilege(struct privilege *);
! 79: void print_userspecs(void);
! 80: void usage(void) __attribute__((__noreturn__));
! 81: void cleanup(int);
! 82: static void set_runaspw(const char *);
! 83: static void set_runasgr(const char *);
! 84: static int cb_runas_default(const char *);
! 85: static int testsudoers_printf(int msg_type, const char *fmt, ...);
! 86: static int testsudoers_print(const char *msg);
! 87:
! 88: extern void setgrfile(const char *);
! 89: extern void setgrent(void);
! 90: extern void endgrent(void);
! 91: extern struct group *getgrent(void);
! 92: extern struct group *getgrnam(const char *);
! 93: extern struct group *getgrgid(gid_t);
! 94: extern void setpwfile(const char *);
! 95: extern void setpwent(void);
! 96: extern void endpwent(void);
! 97: extern struct passwd *getpwent(void);
! 98: extern struct passwd *getpwnam(const char *);
! 99: extern struct passwd *getpwuid(uid_t);
! 100:
! 101: extern int (*trace_print)(const char *msg);
! 102:
! 103: /*
! 104: * Globals
! 105: */
! 106: struct interface *interfaces;
! 107: struct sudo_user sudo_user;
! 108: struct passwd *list_pw;
! 109: static char *runas_group, *runas_user;
! 110: extern int parse_error;
! 111: sudo_printf_t sudo_printf = testsudoers_printf;
! 112:
! 113: /* For getopt(3) */
! 114: extern char *optarg;
! 115: extern int optind;
! 116:
! 117: #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
! 118: extern char *malloc_options;
! 119: #endif
! 120: #ifdef YYDEBUG
! 121: extern int yydebug;
! 122: #endif
! 123:
! 124: int
! 125: main(int argc, char *argv[])
! 126: {
! 127: struct cmndspec *cs;
! 128: struct privilege *priv;
! 129: struct userspec *us;
! 130: char *p, *grfile, *pwfile;
! 131: char hbuf[MAXHOSTNAMELEN + 1];
! 132: int match, host_match, runas_match, cmnd_match;
! 133: int ch, dflag;
! 134:
! 135: #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
! 136: malloc_options = "AFGJPR";
! 137: #endif
! 138: #ifdef YYDEBUG
! 139: yydebug = 1;
! 140: #endif
! 141:
! 142: #if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
! 143: setprogname(argc > 0 ? argv[0] : "testsudoers");
! 144: #endif
! 145:
! 146: dflag = 0;
! 147: grfile = pwfile = NULL;
! 148: while ((ch = getopt(argc, argv, "dg:G:h:p:tu:")) != -1) {
! 149: switch (ch) {
! 150: case 'd':
! 151: dflag = 1;
! 152: break;
! 153: case 'h':
! 154: user_host = optarg;
! 155: break;
! 156: case 'G':
! 157: grfile = optarg;
! 158: break;
! 159: case 'g':
! 160: runas_group = optarg;
! 161: break;
! 162: case 'p':
! 163: pwfile = optarg;
! 164: break;
! 165: case 't':
! 166: trace_print = testsudoers_print;
! 167: break;
! 168: case 'u':
! 169: runas_user = optarg;
! 170: break;
! 171: default:
! 172: usage();
! 173: break;
! 174: }
! 175: }
! 176: argc -= optind;
! 177: argv += optind;
! 178:
! 179: /* Set group/passwd file and init the cache. */
! 180: if (grfile)
! 181: setgrfile(grfile);
! 182: if (pwfile)
! 183: setpwfile(pwfile);
! 184: sudo_setpwent();
! 185: sudo_setgrent();
! 186:
! 187: if (argc < 2) {
! 188: if (!dflag)
! 189: usage();
! 190: user_name = "root";
! 191: user_cmnd = user_base = "true";
! 192: } else {
! 193: user_name = *argv;
! 194: user_cmnd = *++argv;
! 195: if ((p = strrchr(user_cmnd, '/')) != NULL)
! 196: user_base = p + 1;
! 197: else
! 198: user_base = user_cmnd;
! 199: argc -= 2;
! 200: }
! 201: if ((sudo_user.pw = sudo_getpwnam(user_name)) == NULL)
! 202: errorx(1, _("unknown user: %s"), user_name);
! 203:
! 204: if (user_host == NULL) {
! 205: if (gethostname(hbuf, sizeof(hbuf)) != 0)
! 206: error(1, "gethostname");
! 207: hbuf[sizeof(hbuf) - 1] = '\0';
! 208: user_host = hbuf;
! 209: }
! 210: if ((p = strchr(user_host, '.'))) {
! 211: *p = '\0';
! 212: user_shost = estrdup(user_host);
! 213: *p = '.';
! 214: } else {
! 215: user_shost = user_host;
! 216: }
! 217:
! 218: /* Fill in user_args from argv. */
! 219: if (argc > 0) {
! 220: char *to, **from;
! 221: size_t size, n;
! 222:
! 223: for (size = 0, from = argv + 1; *from; from++)
! 224: size += strlen(*from) + 1;
! 225:
! 226: user_args = (char *) emalloc(size);
! 227: for (to = user_args, from = argv + 1; *from; from++) {
! 228: n = strlcpy(to, *from, size - (to - user_args));
! 229: if (n >= size - (to - user_args))
! 230: errorx(1, _("internal error, init_vars() overflow"));
! 231: to += n;
! 232: *to++ = ' ';
! 233: }
! 234: *--to = '\0';
! 235: }
! 236:
! 237: /* Initialize default values. */
! 238: init_defaults();
! 239:
! 240: /* Set runas callback. */
! 241: sudo_defs_table[I_RUNAS_DEFAULT].callback = cb_runas_default;
! 242:
! 243: /* Load ip addr/mask for each interface. */
! 244: if (get_net_ifs(&p) > 0)
! 245: set_interfaces(p);
! 246:
! 247: /* Allocate space for data structures in the parser. */
! 248: init_parser("sudoers", 0);
! 249:
! 250: if (yyparse() != 0 || parse_error) {
! 251: parse_error = TRUE;
! 252: (void) fputs("Does not parse", stdout);
! 253: } else {
! 254: (void) fputs("Parses OK", stdout);
! 255: }
! 256:
! 257: if (!update_defaults(SETDEF_ALL))
! 258: (void) fputs(" (problem with defaults entries)", stdout);
! 259: puts(".");
! 260:
! 261: if (def_group_plugin && group_plugin_load(def_group_plugin) != TRUE)
! 262: def_group_plugin = NULL;
! 263:
! 264: /*
! 265: * Set runas passwd/group entries based on command line or sudoers.
! 266: * Note that if runas_group was specified without runas_user we
! 267: * defer setting runas_pw so the match routines know to ignore it.
! 268: */
! 269: if (runas_group != NULL) {
! 270: set_runasgr(runas_group);
! 271: if (runas_user != NULL)
! 272: set_runaspw(runas_user);
! 273: } else
! 274: set_runaspw(runas_user ? runas_user : def_runas_default);
! 275:
! 276: if (dflag) {
! 277: (void) putchar('\n');
! 278: dump_sudoers();
! 279: if (argc < 2)
! 280: exit(parse_error ? 1 : 0);
! 281: }
! 282:
! 283: /* This loop must match the one in sudo_file_lookup() */
! 284: printf("\nEntries for user %s:\n", user_name);
! 285: match = UNSPEC;
! 286: tq_foreach_rev(&userspecs, us) {
! 287: if (userlist_matches(sudo_user.pw, &us->users) != ALLOW)
! 288: continue;
! 289: tq_foreach_rev(&us->privileges, priv) {
! 290: putchar('\n');
! 291: print_privilege(priv); /* XXX */
! 292: putchar('\n');
! 293: host_match = hostlist_matches(&priv->hostlist);
! 294: if (host_match == ALLOW) {
! 295: puts("\thost matched");
! 296: tq_foreach_rev(&priv->cmndlist, cs) {
! 297: runas_match = runaslist_matches(&cs->runasuserlist,
! 298: &cs->runasgrouplist);
! 299: if (runas_match == ALLOW) {
! 300: puts("\trunas matched");
! 301: cmnd_match = cmnd_matches(cs->cmnd);
! 302: if (cmnd_match != UNSPEC)
! 303: match = cmnd_match;
! 304: printf("\tcmnd %s\n", match == ALLOW ? "allowed" :
! 305: match == DENY ? "denied" : "unmatched");
! 306: }
! 307: }
! 308: } else
! 309: puts(_("\thost unmatched"));
! 310: }
! 311: }
! 312: puts(match == ALLOW ? _("\nCommand allowed") :
! 313: match == DENY ? _("\nCommand denied") : _("\nCommand unmatched"));
! 314:
! 315: /*
! 316: * Exit codes:
! 317: * 0 - parsed OK and command matched.
! 318: * 1 - parse error
! 319: * 2 - command not matched
! 320: * 3 - command denied
! 321: */
! 322: if (parse_error)
! 323: exit(1);
! 324: exit(match == ALLOW ? 0 : match + 3);
! 325: }
! 326:
! 327: static void
! 328: set_runaspw(const char *user)
! 329: {
! 330: if (runas_pw != NULL)
! 331: pw_delref(runas_pw);
! 332: if (*user == '#') {
! 333: if ((runas_pw = sudo_getpwuid(atoi(user + 1))) == NULL)
! 334: runas_pw = sudo_fakepwnam(user, runas_gr ? runas_gr->gr_gid : 0);
! 335: } else {
! 336: if ((runas_pw = sudo_getpwnam(user)) == NULL)
! 337: errorx(1, _("unknown user: %s"), user);
! 338: }
! 339: }
! 340:
! 341: static void
! 342: set_runasgr(const char *group)
! 343: {
! 344: if (runas_gr != NULL)
! 345: gr_delref(runas_gr);
! 346: if (*group == '#') {
! 347: if ((runas_gr = sudo_getgrgid(atoi(group + 1))) == NULL)
! 348: runas_gr = sudo_fakegrnam(group);
! 349: } else {
! 350: if ((runas_gr = sudo_getgrnam(group)) == NULL)
! 351: errorx(1, _("unknown group: %s"), group);
! 352: }
! 353: }
! 354:
! 355: /*
! 356: * Callback for runas_default sudoers setting.
! 357: */
! 358: static int
! 359: cb_runas_default(const char *user)
! 360: {
! 361: /* Only reset runaspw if user didn't specify one. */
! 362: if (!runas_user && !runas_group)
! 363: set_runaspw(user);
! 364: return TRUE;
! 365: }
! 366:
! 367: void
! 368: sudo_setspent(void)
! 369: {
! 370: return;
! 371: }
! 372:
! 373: void
! 374: sudo_endspent(void)
! 375: {
! 376: return;
! 377: }
! 378:
! 379: void
! 380: set_fqdn(void)
! 381: {
! 382: return;
! 383: }
! 384:
! 385: FILE *
! 386: open_sudoers(const char *path, int isdir, int *keepopen)
! 387: {
! 388: return fopen(path, "r");
! 389: }
! 390:
! 391: void
! 392: init_envtables(void)
! 393: {
! 394: return;
! 395: }
! 396:
! 397: int
! 398: set_perms(int perm)
! 399: {
! 400: return 1;
! 401: }
! 402:
! 403: void
! 404: restore_perms(void)
! 405: {
! 406: }
! 407:
! 408: void
! 409: cleanup(int gotsignal)
! 410: {
! 411: if (!gotsignal) {
! 412: sudo_endpwent();
! 413: sudo_endgrent();
! 414: }
! 415: }
! 416:
! 417: void
! 418: print_member(struct member *m)
! 419: {
! 420: struct sudo_command *c;
! 421:
! 422: if (m->negated)
! 423: putchar('!');
! 424: if (m->name == NULL)
! 425: fputs("ALL", stdout);
! 426: else if (m->type != COMMAND)
! 427: fputs(m->name, stdout);
! 428: else {
! 429: c = (struct sudo_command *) m->name;
! 430: printf("%s%s%s", c->cmnd, c->args ? " " : "",
! 431: c->args ? c->args : "");
! 432: }
! 433: }
! 434:
! 435: void
! 436: print_defaults(void)
! 437: {
! 438: struct defaults *d;
! 439: struct member *m;
! 440:
! 441: tq_foreach_fwd(&defaults, d) {
! 442: (void) fputs("Defaults", stdout);
! 443: switch (d->type) {
! 444: case DEFAULTS_HOST:
! 445: putchar('@');
! 446: break;
! 447: case DEFAULTS_USER:
! 448: putchar(':');
! 449: break;
! 450: case DEFAULTS_RUNAS:
! 451: putchar('>');
! 452: break;
! 453: case DEFAULTS_CMND:
! 454: putchar('!');
! 455: break;
! 456: }
! 457: tq_foreach_fwd(&d->binding, m) {
! 458: if (m != tq_first(&d->binding))
! 459: putchar(',');
! 460: print_member(m);
! 461: }
! 462: printf("\t%s%s", d->op == FALSE ? "!" : "", d->var);
! 463: if (d->val != NULL) {
! 464: printf("%c%s", d->op == TRUE ? '=' : d->op, d->val);
! 465: }
! 466: putchar('\n');
! 467: }
! 468: }
! 469:
! 470: int
! 471: print_alias(void *v1, void *v2)
! 472: {
! 473: struct alias *a = (struct alias *)v1;
! 474: struct member *m;
! 475: struct sudo_command *c;
! 476:
! 477: switch (a->type) {
! 478: case HOSTALIAS:
! 479: (void) printf("Host_Alias\t%s = ", a->name);
! 480: break;
! 481: case CMNDALIAS:
! 482: (void) printf("Cmnd_Alias\t%s = ", a->name);
! 483: break;
! 484: case USERALIAS:
! 485: (void) printf("User_Alias\t%s = ", a->name);
! 486: break;
! 487: case RUNASALIAS:
! 488: (void) printf("Runas_Alias\t%s = ", a->name);
! 489: break;
! 490: }
! 491: tq_foreach_fwd(&a->members, m) {
! 492: if (m != tq_first(&a->members))
! 493: fputs(", ", stdout);
! 494: if (m->type == COMMAND) {
! 495: c = (struct sudo_command *) m->name;
! 496: printf("%s%s%s", c->cmnd, c->args ? " " : "",
! 497: c->args ? c->args : "");
! 498: } else if (m->type == ALL) {
! 499: fputs("ALL", stdout);
! 500: } else {
! 501: fputs(m->name, stdout);
! 502: }
! 503: }
! 504: putchar('\n');
! 505: return 0;
! 506: }
! 507:
! 508: void
! 509: print_privilege(struct privilege *priv)
! 510: {
! 511: struct cmndspec *cs;
! 512: struct member *m;
! 513: struct privilege *p;
! 514: struct cmndtag tags;
! 515:
! 516: for (p = priv; p != NULL; p = p->next) {
! 517: if (p != priv)
! 518: fputs(" : ", stdout);
! 519: tq_foreach_fwd(&p->hostlist, m) {
! 520: if (m != tq_first(&p->hostlist))
! 521: fputs(", ", stdout);
! 522: print_member(m);
! 523: }
! 524: fputs(" = ", stdout);
! 525: tags.nopasswd = tags.noexec = UNSPEC;
! 526: tq_foreach_fwd(&p->cmndlist, cs) {
! 527: if (cs != tq_first(&p->cmndlist))
! 528: fputs(", ", stdout);
! 529: if (!tq_empty(&cs->runasuserlist) || !tq_empty(&cs->runasgrouplist)) {
! 530: fputs("(", stdout);
! 531: if (!tq_empty(&cs->runasuserlist)) {
! 532: tq_foreach_fwd(&cs->runasuserlist, m) {
! 533: if (m != tq_first(&cs->runasuserlist))
! 534: fputs(", ", stdout);
! 535: print_member(m);
! 536: }
! 537: } else if (tq_empty(&cs->runasgrouplist)) {
! 538: fputs(def_runas_default, stdout);
! 539: } else {
! 540: fputs(sudo_user.pw->pw_name, stdout);
! 541: }
! 542: if (!tq_empty(&cs->runasgrouplist)) {
! 543: fputs(" : ", stdout);
! 544: tq_foreach_fwd(&cs->runasgrouplist, m) {
! 545: if (m != tq_first(&cs->runasgrouplist))
! 546: fputs(", ", stdout);
! 547: print_member(m);
! 548: }
! 549: }
! 550: fputs(") ", stdout);
! 551: }
! 552: #ifdef HAVE_SELINUX
! 553: if (cs->role)
! 554: printf("ROLE=%s ", cs->role);
! 555: if (cs->type)
! 556: printf("TYPE=%s ", cs->type);
! 557: #endif /* HAVE_SELINUX */
! 558: if (cs->tags.nopasswd != UNSPEC && cs->tags.nopasswd != tags.nopasswd)
! 559: printf("%sPASSWD: ", cs->tags.nopasswd ? "NO" : "");
! 560: if (cs->tags.noexec != UNSPEC && cs->tags.noexec != tags.noexec)
! 561: printf("%sEXEC: ", cs->tags.noexec ? "NO" : "");
! 562: print_member(cs->cmnd);
! 563: memcpy(&tags, &cs->tags, sizeof(tags));
! 564: }
! 565: }
! 566: }
! 567:
! 568: void
! 569: print_userspecs(void)
! 570: {
! 571: struct member *m;
! 572: struct userspec *us;
! 573:
! 574: tq_foreach_fwd(&userspecs, us) {
! 575: tq_foreach_fwd(&us->users, m) {
! 576: if (m != tq_first(&us->users))
! 577: fputs(", ", stdout);
! 578: print_member(m);
! 579: }
! 580: putchar('\t');
! 581: print_privilege(us->privileges.first); /* XXX */
! 582: putchar('\n');
! 583: }
! 584: }
! 585:
! 586: static int
! 587: testsudoers_printf(int msg_type, const char *fmt, ...)
! 588: {
! 589: va_list ap;
! 590: FILE *fp;
! 591:
! 592: switch (msg_type) {
! 593: case SUDO_CONV_INFO_MSG:
! 594: fp = stdout;
! 595: break;
! 596: case SUDO_CONV_ERROR_MSG:
! 597: fp = stderr;
! 598: break;
! 599: default:
! 600: errno = EINVAL;
! 601: return -1;
! 602: }
! 603:
! 604: va_start(ap, fmt);
! 605: vfprintf(fp, fmt, ap);
! 606: va_end(ap);
! 607:
! 608: return 0;
! 609: }
! 610:
! 611: void
! 612: dump_sudoers(void)
! 613: {
! 614: print_defaults();
! 615:
! 616: putchar('\n');
! 617: alias_apply(print_alias, NULL);
! 618:
! 619: putchar('\n');
! 620: print_userspecs();
! 621: }
! 622:
! 623: static int testsudoers_print(const char *msg)
! 624: {
! 625: return fputs(msg, stderr);
! 626: }
! 627:
! 628: void
! 629: usage(void)
! 630: {
! 631: (void) fprintf(stderr, "usage: %s [-dt] [-G grfile] [-g group] [-h host] [-p pwfile] [-u user] <user> <command> [args]\n", getprogname());
! 632: exit(1);
! 633: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to testsudoers.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / sudo / plugins / sudoers