1: /*
2: * Copyright (c) 1994-1996, 1998-2011 Todd C. Miller <Todd.Miller@courtesan.com>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: *
16: * Sponsored in part by the Defense Advanced Research Projects
17: * Agency (DARPA) and Air Force Research Laboratory, Air Force
18: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
19: */
20:
21: #ifdef __TANDEM
22: # include <floss.h>
23: #endif
24:
25: #include <config.h>
26:
27: #include <sys/types.h>
28: #include <sys/param.h>
29: #include <sys/stat.h>
30: #include <sys/ioctl.h>
31: #include <sys/wait.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_SETLOCALE
51: # include <locale.h>
52: #endif /* HAVE_SETLOCALE */
53: #ifdef HAVE_NL_LANGINFO
54: # include <langinfo.h>
55: #endif /* HAVE_NL_LANGINFO */
56: #include <pwd.h>
57: #include <grp.h>
58: #include <signal.h>
59: #include <time.h>
60: #include <ctype.h>
61: #include <errno.h>
62: #include <fcntl.h>
63: #include <setjmp.h>
64:
65: #include "sudoers.h"
66:
67: static void do_syslog(int, char *);
68: static void do_logfile(char *);
69: static void send_mail(const char *fmt, ...);
70: static int should_mail(int);
71: static void mysyslog(int, const char *, ...);
72: static char *new_logline(const char *, int);
73:
74: extern sigjmp_buf error_jmp;
75:
76: #define MAXSYSLOGTRIES 16 /* num of retries for broken syslogs */
77:
78: /*
79: * We do an openlog(3)/closelog(3) for each message because some
80: * authentication methods (notably PAM) use syslog(3) for their
81: * own nefarious purposes and may call openlog(3) and closelog(3).
82: * Note that because we don't want to assume that all systems have
83: * vsyslog(3) (HP-UX doesn't) "%m" will not be expanded.
84: * Sadly this is a maze of #ifdefs.
85: */
86: static void
87: mysyslog(int pri, const char *fmt, ...)
88: {
89: #ifdef BROKEN_SYSLOG
90: int i;
91: #endif
92: char buf[MAXSYSLOGLEN+1];
93: va_list ap;
94:
95: va_start(ap, fmt);
96: #ifdef LOG_NFACILITIES
97: openlog("sudo", 0, def_syslog);
98: #else
99: openlog("sudo", 0);
100: #endif
101: vsnprintf(buf, sizeof(buf), fmt, ap);
102: #ifdef BROKEN_SYSLOG
103: /*
104: * Some versions of syslog(3) don't guarantee success and return
105: * an int (notably HP-UX < 10.0). So, if at first we don't succeed,
106: * try, try again...
107: */
108: for (i = 0; i < MAXSYSLOGTRIES; i++)
109: if (syslog(pri, "%s", buf) == 0)
110: break;
111: #else
112: syslog(pri, "%s", buf);
113: #endif /* BROKEN_SYSLOG */
114: va_end(ap);
115: closelog();
116: }
117:
118: #define FMT_FIRST "%8s : %s"
119: #define FMT_CONTD "%8s : (command continued) %s"
120:
121: /*
122: * Log a message to syslog, pre-pending the username and splitting the
123: * message into parts if it is longer than MAXSYSLOGLEN.
124: */
125: static void
126: do_syslog(int pri, char *msg)
127: {
128: size_t len, maxlen;
129: char *p, *tmp, save;
130: const char *fmt;
131:
132: #ifdef HAVE_SETLOCALE
133: const char *old_locale = estrdup(setlocale(LC_ALL, NULL));
134: if (!setlocale(LC_ALL, def_sudoers_locale))
135: setlocale(LC_ALL, "C");
136: #endif /* HAVE_SETLOCALE */
137:
138: /*
139: * Log the full line, breaking into multiple syslog(3) calls if necessary
140: */
141: fmt = _(FMT_FIRST);
142: maxlen = MAXSYSLOGLEN - (strlen(fmt) - 5 + strlen(user_name));
143: for (p = msg; *p != '\0'; ) {
144: len = strlen(p);
145: if (len > maxlen) {
146: /*
147: * Break up the line into what will fit on one syslog(3) line
148: * Try to avoid breaking words into several lines if possible.
149: */
150: tmp = memrchr(p, ' ', maxlen);
151: if (tmp == NULL)
152: tmp = p + maxlen;
153:
154: /* NULL terminate line, but save the char to restore later */
155: save = *tmp;
156: *tmp = '\0';
157:
158: mysyslog(pri, fmt, user_name, p);
159:
160: *tmp = save; /* restore saved character */
161:
162: /* Advance p and eliminate leading whitespace */
163: for (p = tmp; *p == ' '; p++)
164: ;
165: } else {
166: mysyslog(pri, fmt, user_name, p);
167: p += len;
168: }
169: fmt = _(FMT_CONTD);
170: maxlen = MAXSYSLOGLEN - (strlen(fmt) - 5 + strlen(user_name));
171: }
172:
173: #ifdef HAVE_SETLOCALE
174: setlocale(LC_ALL, old_locale);
175: efree((void *)old_locale);
176: #endif /* HAVE_SETLOCALE */
177: }
178:
179: static void
180: do_logfile(char *msg)
181: {
182: char *full_line;
183: size_t len;
184: mode_t oldmask;
185: time_t now;
186: FILE *fp;
187:
188: oldmask = umask(077);
189: fp = fopen(def_logfile, "a");
190: (void) umask(oldmask);
191: if (fp == NULL) {
192: send_mail(_("unable to open log file: %s: %s"),
193: def_logfile, strerror(errno));
194: } else if (!lock_file(fileno(fp), SUDO_LOCK)) {
195: send_mail(_("unable to lock log file: %s: %s"),
196: def_logfile, strerror(errno));
197: } else {
198: #ifdef HAVE_SETLOCALE
199: const char *old_locale = estrdup(setlocale(LC_ALL, NULL));
200: if (!setlocale(LC_ALL, def_sudoers_locale))
201: setlocale(LC_ALL, "C");
202: #endif /* HAVE_SETLOCALE */
203:
204: now = time(NULL);
205: if (def_loglinelen < sizeof(LOG_INDENT)) {
206: /* Don't pretty-print long log file lines (hard to grep) */
207: if (def_log_host)
208: (void) fprintf(fp, "%s : %s : HOST=%s : %s\n",
209: get_timestr(now, def_log_year), user_name, user_shost, msg);
210: else
211: (void) fprintf(fp, "%s : %s : %s\n",
212: get_timestr(now, def_log_year), user_name, msg);
213: } else {
214: if (def_log_host)
215: len = easprintf(&full_line, "%s : %s : HOST=%s : %s",
216: get_timestr(now, def_log_year), user_name, user_shost, msg);
217: else
218: len = easprintf(&full_line, "%s : %s : %s",
219: get_timestr(now, def_log_year), user_name, msg);
220:
221: /*
222: * Print out full_line with word wrap around def_loglinelen chars.
223: */
224: writeln_wrap(fp, full_line, len, def_loglinelen);
225: efree(full_line);
226: }
227: (void) fflush(fp);
228: (void) lock_file(fileno(fp), SUDO_UNLOCK);
229: (void) fclose(fp);
230:
231: #ifdef HAVE_SETLOCALE
232: setlocale(LC_ALL, old_locale);
233: efree((void *)old_locale);
234: #endif /* HAVE_SETLOCALE */
235: }
236: }
237:
238: /*
239: * Log and mail the denial message, optionally informing the user.
240: */
241: void
242: log_denial(int status, int inform_user)
243: {
244: char *message;
245: char *logline;
246:
247: /* Set error message. */
248: if (ISSET(status, FLAG_NO_USER))
249: message = _("user NOT in sudoers");
250: else if (ISSET(status, FLAG_NO_HOST))
251: message = _("user NOT authorized on host");
252: else
253: message = _("command not allowed");
254:
255: logline = new_logline(message, 0);
256:
257: if (should_mail(status))
258: send_mail("%s", logline); /* send mail based on status */
259:
260: /* Inform the user if they failed to authenticate. */
261: if (inform_user) {
262: if (ISSET(status, FLAG_NO_USER)) {
263: sudo_printf(SUDO_CONV_ERROR_MSG, _("%s is not in the sudoers "
264: "file. This incident will be reported.\n"), user_name);
265: } else if (ISSET(status, FLAG_NO_HOST)) {
266: sudo_printf(SUDO_CONV_ERROR_MSG, _("%s is not allowed to run sudo "
267: "on %s. This incident will be reported.\n"),
268: user_name, user_shost);
269: } else if (ISSET(status, FLAG_NO_CHECK)) {
270: sudo_printf(SUDO_CONV_ERROR_MSG, _("Sorry, user %s may not run "
271: "sudo on %s.\n"), user_name, user_shost);
272: } else {
273: sudo_printf(SUDO_CONV_ERROR_MSG, _("Sorry, user %s is not allowed "
274: "to execute '%s%s%s' as %s%s%s on %s.\n"),
275: user_name, user_cmnd, user_args ? " " : "",
276: user_args ? user_args : "",
277: list_pw ? list_pw->pw_name : runas_pw ?
278: runas_pw->pw_name : user_name, runas_gr ? ":" : "",
279: runas_gr ? runas_gr->gr_name : "", user_host);
280: }
281: }
282:
283: /*
284: * Log via syslog and/or a file.
285: */
286: if (def_syslog)
287: do_syslog(def_syslog_badpri, logline);
288: if (def_logfile)
289: do_logfile(logline);
290:
291: efree(logline);
292: }
293:
294: /*
295: * Log and potentially mail the allowed command.
296: */
297: void
298: log_allowed(int status)
299: {
300: char *logline;
301:
302: logline = new_logline(NULL, 0);
303:
304: if (should_mail(status))
305: send_mail("%s", logline); /* send mail based on status */
306:
307: /*
308: * Log via syslog and/or a file.
309: */
310: if (def_syslog)
311: do_syslog(def_syslog_goodpri, logline);
312: if (def_logfile)
313: do_logfile(logline);
314:
315: efree(logline);
316: }
317:
318: void
319: log_error(int flags, const char *fmt, ...)
320: {
321: int serrno = errno;
322: char *message;
323: char *logline;
324: va_list ap;
325:
326: /* Expand printf-style format + args. */
327: va_start(ap, fmt);
328: evasprintf(&message, fmt, ap);
329: va_end(ap);
330:
331: /* Become root if we are not already to avoid user interference */
332: set_perms(PERM_ROOT|PERM_NOEXIT);
333:
334: if (ISSET(flags, MSG_ONLY))
335: logline = message;
336: else
337: logline = new_logline(message, ISSET(flags, USE_ERRNO) ? serrno : 0);
338:
339: /*
340: * Tell the user.
341: */
342: if (!ISSET(flags, NO_STDERR)) {
343: if (ISSET(flags, USE_ERRNO))
344: warning("%s", message);
345: else
346: warningx("%s", message);
347: }
348: if (logline != message)
349: efree(message);
350:
351: /*
352: * Send a copy of the error via mail.
353: */
354: if (!ISSET(flags, NO_MAIL))
355: send_mail("%s", logline);
356:
357: /*
358: * Log to syslog and/or a file.
359: */
360: if (def_syslog)
361: do_syslog(def_syslog_badpri, logline);
362: if (def_logfile)
363: do_logfile(logline);
364:
365: efree(logline);
366:
367: restore_perms();
368:
369: if (!ISSET(flags, NO_EXIT)) {
370: plugin_cleanup(0);
371: siglongjmp(error_jmp, 1);
372: }
373: }
374:
375: #define MAX_MAILFLAGS 63
376:
377: /*
378: * Send a message to MAILTO user
379: */
380: static void
381: send_mail(const char *fmt, ...)
382: {
383: FILE *mail;
384: char *p;
385: int fd, pfd[2], status;
386: pid_t pid, rv;
387: sigaction_t sa;
388: va_list ap;
389: #ifndef NO_ROOT_MAILER
390: static char *root_envp[] = {
391: "HOME=/",
392: "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
393: "LOGNAME=root",
394: "USERNAME=root",
395: "USER=root",
396: NULL
397: };
398: #endif /* NO_ROOT_MAILER */
399:
400: /* Just return if mailer is disabled. */
401: if (!def_mailerpath || !def_mailto)
402: return;
403:
404: /* Fork and return, child will daemonize. */
405: switch (pid = fork()) {
406: case -1:
407: /* Error. */
408: error(1, _("unable to fork"));
409: break;
410: case 0:
411: /* Child. */
412: switch (pid = fork()) {
413: case -1:
414: /* Error. */
415: mysyslog(LOG_ERR, _("unable to fork: %m"));
416: _exit(1);
417: case 0:
418: /* Grandchild continues below. */
419: break;
420: default:
421: /* Parent will wait for us. */
422: _exit(0);
423: }
424: break;
425: default:
426: /* Parent. */
427: do {
428: rv = waitpid(pid, &status, 0);
429: } while (rv == -1 && errno == EINTR);
430: return;
431: }
432:
433: /* Daemonize - disassociate from session/tty. */
434: if (setsid() == -1)
435: warning("setsid");
436: if (chdir("/") == -1)
437: warning("chdir(/)");
438: if ((fd = open(_PATH_DEVNULL, O_RDWR, 0644)) != -1) {
439: (void) dup2(fd, STDIN_FILENO);
440: (void) dup2(fd, STDOUT_FILENO);
441: (void) dup2(fd, STDERR_FILENO);
442: }
443:
444: #ifdef HAVE_SETLOCALE
445: if (!setlocale(LC_ALL, def_sudoers_locale)) {
446: setlocale(LC_ALL, "C");
447: efree(def_sudoers_locale);
448: def_sudoers_locale = estrdup("C");
449: }
450: #endif /* HAVE_SETLOCALE */
451:
452: /* Close password, group and other fds so we don't leak. */
453: sudo_endpwent();
454: sudo_endgrent();
455: closefrom(STDERR_FILENO + 1);
456:
457: /* Ignore SIGPIPE in case mailer exits prematurely (or is missing). */
458: zero_bytes(&sa, sizeof(sa));
459: sigemptyset(&sa.sa_mask);
460: sa.sa_flags = SA_INTERRUPT;
461: sa.sa_handler = SIG_IGN;
462: (void) sigaction(SIGPIPE, &sa, NULL);
463:
464: if (pipe(pfd) == -1) {
465: mysyslog(LOG_ERR, _("unable to open pipe: %m"));
466: _exit(1);
467: }
468:
469: switch (pid = fork()) {
470: case -1:
471: /* Error. */
472: mysyslog(LOG_ERR, _("unable to fork: %m"));
473: _exit(1);
474: break;
475: case 0:
476: {
477: char *argv[MAX_MAILFLAGS + 1];
478: char *mpath, *mflags;
479: int i;
480:
481: /* Child, set stdin to output side of the pipe */
482: if (pfd[0] != STDIN_FILENO) {
483: if (dup2(pfd[0], STDIN_FILENO) == -1) {
484: mysyslog(LOG_ERR, _("unable to dup stdin: %m"));
485: _exit(127);
486: }
487: (void) close(pfd[0]);
488: }
489: (void) close(pfd[1]);
490:
491: /* Build up an argv based on the mailer path and flags */
492: mflags = estrdup(def_mailerflags);
493: mpath = estrdup(def_mailerpath);
494: if ((argv[0] = strrchr(mpath, ' ')))
495: argv[0]++;
496: else
497: argv[0] = mpath;
498:
499: i = 1;
500: if ((p = strtok(mflags, " \t"))) {
501: do {
502: argv[i] = p;
503: } while (++i < MAX_MAILFLAGS && (p = strtok(NULL, " \t")));
504: }
505: argv[i] = NULL;
506:
507: /*
508: * Depending on the config, either run the mailer as root
509: * (so user cannot kill it) or as the user (for the paranoid).
510: */
511: #ifndef NO_ROOT_MAILER
512: set_perms(PERM_ROOT|PERM_NOEXIT);
513: execve(mpath, argv, root_envp);
514: #else
515: set_perms(PERM_FULL_USER|PERM_NOEXIT);
516: execv(mpath, argv);
517: #endif /* NO_ROOT_MAILER */
518: mysyslog(LOG_ERR, _("unable to execute %s: %m"), mpath);
519: _exit(127);
520: }
521: break;
522: }
523:
524: (void) close(pfd[0]);
525: mail = fdopen(pfd[1], "w");
526:
527: /* Pipes are all setup, send message. */
528: (void) fprintf(mail, "To: %s\nFrom: %s\nAuto-Submitted: %s\nSubject: ",
529: def_mailto, def_mailfrom ? def_mailfrom : user_name, "auto-generated");
530: for (p = def_mailsub; *p; p++) {
531: /* Expand escapes in the subject */
532: if (*p == '%' && *(p+1) != '%') {
533: switch (*(++p)) {
534: case 'h':
535: (void) fputs(user_host, mail);
536: break;
537: case 'u':
538: (void) fputs(user_name, mail);
539: break;
540: default:
541: p--;
542: break;
543: }
544: } else
545: (void) fputc(*p, mail);
546: }
547:
548: #ifdef HAVE_NL_LANGINFO
549: if (strcmp(def_sudoers_locale, "C") != 0)
550: (void) fprintf(mail, "\nContent-Type: text/plain; charset=\"%s\"\nContent-Transfer-Encoding: 8bit", nl_langinfo(CODESET));
551: #endif /* HAVE_NL_LANGINFO */
552:
553: (void) fprintf(mail, "\n\n%s : %s : %s : ", user_host,
554: get_timestr(time(NULL), def_log_year), user_name);
555: va_start(ap, fmt);
556: (void) vfprintf(mail, fmt, ap);
557: va_end(ap);
558: fputs("\n\n", mail);
559:
560: fclose(mail);
561: do {
562: rv = waitpid(pid, &status, 0);
563: } while (rv == -1 && errno == EINTR);
564: _exit(0);
565: }
566:
567: /*
568: * Determine whether we should send mail based on "status" and defaults options.
569: */
570: static int
571: should_mail(int status)
572: {
573:
574: return def_mail_always || ISSET(status, VALIDATE_ERROR) ||
575: (def_mail_no_user && ISSET(status, FLAG_NO_USER)) ||
576: (def_mail_no_host && ISSET(status, FLAG_NO_HOST)) ||
577: (def_mail_no_perms && !ISSET(status, VALIDATE_OK));
578: }
579:
580: #define LL_TTY_STR "TTY="
581: #define LL_CWD_STR "PWD=" /* XXX - should be CWD= */
582: #define LL_USER_STR "USER="
583: #define LL_GROUP_STR "GROUP="
584: #define LL_ENV_STR "ENV="
585: #define LL_CMND_STR "COMMAND="
586: #define LL_TSID_STR "TSID="
587:
588: #define IS_SESSID(s) ( \
589: isalnum((unsigned char)(s)[0]) && isalnum((unsigned char)(s)[1]) && \
590: (s)[2] == '/' && \
591: isalnum((unsigned char)(s)[3]) && isalnum((unsigned char)(s)[4]) && \
592: (s)[5] == '/' && \
593: isalnum((unsigned char)(s)[6]) && isalnum((unsigned char)(s)[7]) && \
594: (s)[8] == '\0')
595:
596: /*
597: * Allocate and fill in a new logline.
598: */
599: static char *
600: new_logline(const char *message, int serrno)
601: {
602: size_t len = 0;
603: char *errstr = NULL;
604: char *evstr = NULL;
605: char *line, sessid[7], *tsid = NULL;
606:
607: /* A TSID may be a sudoers-style session ID or a free-form string. */
608: if (sudo_user.iolog_file != NULL) {
609: if (IS_SESSID(sudo_user.iolog_file)) {
610: sessid[0] = sudo_user.iolog_file[0];
611: sessid[1] = sudo_user.iolog_file[1];
612: sessid[2] = sudo_user.iolog_file[3];
613: sessid[3] = sudo_user.iolog_file[4];
614: sessid[4] = sudo_user.iolog_file[6];
615: sessid[5] = sudo_user.iolog_file[7];
616: sessid[6] = '\0';
617: tsid = sessid;
618: } else {
619: tsid = sudo_user.iolog_file;
620: }
621: }
622:
623: /*
624: * Compute line length
625: */
626: if (message != NULL)
627: len += strlen(message) + 3;
628: if (serrno) {
629: errstr = strerror(serrno);
630: len += strlen(errstr) + 3;
631: }
632: len += sizeof(LL_TTY_STR) + 2 + strlen(user_tty);
633: len += sizeof(LL_CWD_STR) + 2 + strlen(user_cwd);
634: if (runas_pw != NULL)
635: len += sizeof(LL_USER_STR) + 2 + strlen(runas_pw->pw_name);
636: if (runas_gr != NULL)
637: len += sizeof(LL_GROUP_STR) + 2 + strlen(runas_gr->gr_name);
638: if (tsid != NULL)
639: len += sizeof(LL_TSID_STR) + 2 + strlen(tsid);
640: if (sudo_user.env_vars != NULL) {
641: size_t evlen = 0;
642: char * const *ep;
643:
644: for (ep = sudo_user.env_vars; *ep != NULL; ep++)
645: evlen += strlen(*ep) + 1;
646: evstr = emalloc(evlen);
647: evstr[0] = '\0';
648: for (ep = sudo_user.env_vars; *ep != NULL; ep++) {
649: strlcat(evstr, *ep, evlen);
650: strlcat(evstr, " ", evlen); /* NOTE: last one will fail */
651: }
652: len += sizeof(LL_ENV_STR) + 2 + evlen;
653: }
654: if (user_cmnd != NULL) {
655: /* Note: we log "sudo -l command arg ..." as "list command arg ..." */
656: len += sizeof(LL_CMND_STR) - 1 + strlen(user_cmnd);
657: if (ISSET(sudo_mode, MODE_CHECK))
658: len += sizeof("list ") - 1;
659: if (user_args != NULL)
660: len += strlen(user_args) + 1;
661: }
662:
663: /*
664: * Allocate and build up the line.
665: */
666: line = emalloc(++len);
667: line[0] = '\0';
668:
669: if (message != NULL) {
670: if (strlcat(line, message, len) >= len ||
671: strlcat(line, errstr ? " : " : " ; ", len) >= len)
672: goto toobig;
673: }
674: if (serrno) {
675: if (strlcat(line, errstr, len) >= len ||
676: strlcat(line, " ; ", len) >= len)
677: goto toobig;
678: }
679: if (strlcat(line, LL_TTY_STR, len) >= len ||
680: strlcat(line, user_tty, len) >= len ||
681: strlcat(line, " ; ", len) >= len)
682: goto toobig;
683: if (strlcat(line, LL_CWD_STR, len) >= len ||
684: strlcat(line, user_cwd, len) >= len ||
685: strlcat(line, " ; ", len) >= len)
686: goto toobig;
687: if (runas_pw != NULL) {
688: if (strlcat(line, LL_USER_STR, len) >= len ||
689: strlcat(line, runas_pw->pw_name, len) >= len ||
690: strlcat(line, " ; ", len) >= len)
691: goto toobig;
692: }
693: if (runas_gr != NULL) {
694: if (strlcat(line, LL_GROUP_STR, len) >= len ||
695: strlcat(line, runas_gr->gr_name, len) >= len ||
696: strlcat(line, " ; ", len) >= len)
697: goto toobig;
698: }
699: if (tsid != NULL) {
700: if (strlcat(line, LL_TSID_STR, len) >= len ||
701: strlcat(line, tsid, len) >= len ||
702: strlcat(line, " ; ", len) >= len)
703: goto toobig;
704: }
705: if (evstr != NULL) {
706: if (strlcat(line, LL_ENV_STR, len) >= len ||
707: strlcat(line, evstr, len) >= len ||
708: strlcat(line, " ; ", len) >= len)
709: goto toobig;
710: efree(evstr);
711: }
712: if (user_cmnd != NULL) {
713: if (strlcat(line, LL_CMND_STR, len) >= len)
714: goto toobig;
715: if (ISSET(sudo_mode, MODE_CHECK) && strlcat(line, "list ", len) >= len)
716: goto toobig;
717: if (strlcat(line, user_cmnd, len) >= len)
718: goto toobig;
719: if (user_args != NULL) {
720: if (strlcat(line, " ", len) >= len ||
721: strlcat(line, user_args, len) >= len)
722: goto toobig;
723: }
724: }
725:
726: return line;
727: toobig:
728: errorx(1, _("internal error: insufficient space for log line"));
729: }
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