1: /*
2: * Copyright (c) 2009-2014 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:
17: #include <config.h>
18:
19: #include <sys/types.h>
20: #include <sys/stat.h>
21: #include <sys/time.h>
22: #include <stdio.h>
23: #ifdef STDC_HEADERS
24: # include <stdlib.h>
25: # include <stddef.h>
26: #else
27: # ifdef HAVE_STDLIB_H
28: # include <stdlib.h>
29: # endif
30: #endif /* STDC_HEADERS */
31: #ifdef HAVE_STRING_H
32: # include <string.h>
33: #endif /* HAVE_STRING_H */
34: #ifdef HAVE_STRINGS_H
35: # include <strings.h>
36: #endif /* HAVE_STRINGS_H */
37: #ifdef HAVE_UNISTD_H
38: # include <unistd.h>
39: #endif /* HAVE_UNISTD_H */
40: #ifdef TIME_WITH_SYS_TIME
41: # include <time.h>
42: #endif
43: #include <errno.h>
44: #include <fcntl.h>
45: #include <signal.h>
46: #include <pwd.h>
47: #include <grp.h>
48: #ifdef HAVE_ZLIB_H
49: # include <zlib.h>
50: #endif
51:
52: #include "sudoers.h"
53: #include "iolog.h"
54:
55: struct script_buf {
56: int len; /* buffer length (how much read in) */
57: int off; /* write position (how much already consumed) */
58: char buf[16 * 1024];
59: };
60:
61: /* XXX - separate sudoers.h and iolog.h? */
62: #undef runas_pw
63: #undef runas_gr
64:
65: struct iolog_details {
66: const char *cwd;
67: const char *tty;
68: const char *user;
69: const char *command;
70: const char *iolog_path;
71: struct passwd *runas_pw;
72: struct group *runas_gr;
73: int lines;
74: int cols;
75: };
76:
77: static int iolog_compress;
78: static struct timeval last_time;
79: static unsigned int sessid_max = SESSID_MAX;
80:
81: /* sudoers_io is declared at the end of this file. */
82: extern __dso_public struct io_plugin sudoers_io;
83:
84: /*
85: * Create path and any parent directories as needed.
86: * If is_temp is set, use mkdtemp() for the final directory.
87: */
88: static void
89: io_mkdirs(char *path, mode_t mode, bool is_temp)
90: {
91: struct stat sb;
92: gid_t parent_gid = 0;
93: char *slash = path;
94: debug_decl(io_mkdirs, SUDO_DEBUG_UTIL)
95:
96: /* Fast path: not a temporary and already exists. */
97: if (!is_temp && stat(path, &sb) == 0) {
98: if (!S_ISDIR(sb.st_mode)) {
99: log_fatal(0, N_("%s exists but is not a directory (0%o)"),
100: path, (unsigned int) sb.st_mode);
101: }
102: debug_return;
103: }
104:
105: while ((slash = strchr(slash + 1, '/')) != NULL) {
106: *slash = '\0';
107: if (stat(path, &sb) != 0) {
108: if (mkdir(path, mode) != 0)
109: log_fatal(USE_ERRNO, N_("unable to mkdir %s"), path);
110: ignore_result(chown(path, (uid_t)-1, parent_gid));
111: } else if (!S_ISDIR(sb.st_mode)) {
112: log_fatal(0, N_("%s exists but is not a directory (0%o)"),
113: path, (unsigned int) sb.st_mode);
114: } else {
115: /* Inherit gid of parent dir for ownership. */
116: parent_gid = sb.st_gid;
117: }
118: *slash = '/';
119: }
120: /* Create final path component. */
121: if (is_temp) {
122: if (mkdtemp(path) == NULL)
123: log_fatal(USE_ERRNO, N_("unable to mkdir %s"), path);
124: ignore_result(chown(path, (uid_t)-1, parent_gid));
125: } else {
126: if (mkdir(path, mode) != 0 && errno != EEXIST)
127: log_fatal(USE_ERRNO, N_("unable to mkdir %s"), path);
128: ignore_result(chown(path, (uid_t)-1, parent_gid));
129: }
130: debug_return;
131: }
132:
133: /*
134: * Set max session ID (aka sequence number)
135: */
136: int
137: io_set_max_sessid(const char *maxval)
138: {
139: const char *errstr;
140: unsigned int value;
141: debug_decl(io_set_max_sessid, SUDO_DEBUG_UTIL)
142:
143: value = strtonum(maxval, 0, SESSID_MAX, &errstr);
144: if (errstr != NULL) {
145: if (errno != ERANGE) {
146: sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
147: "bad maxseq: %s: %s", maxval, errstr);
148: debug_return_bool(false);
149: }
150: /* Out of range, clamp to SESSID_MAX as documented. */
151: value = SESSID_MAX;
152: }
153: sessid_max = value;
154: debug_return_bool(true);
155: }
156:
157: /*
158: * Read the on-disk sequence number, set sessid to the next
159: * number, and update the on-disk copy.
160: * Uses file locking to avoid sequence number collisions.
161: */
162: void
163: io_nextid(char *iolog_dir, char *iolog_dir_fallback, char sessid[7])
164: {
165: struct stat sb;
166: char buf[32], *ep;
167: int fd, i;
168: unsigned long id = 0;
169: int len;
170: ssize_t nread;
171: char pathbuf[PATH_MAX];
172: static const char b36char[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
173: debug_decl(io_nextid, SUDO_DEBUG_UTIL)
174:
175: /*
176: * Create I/O log directory if it doesn't already exist.
177: */
178: io_mkdirs(iolog_dir, S_IRWXU, false);
179:
180: /*
181: * Open sequence file
182: */
183: len = snprintf(pathbuf, sizeof(pathbuf), "%s/seq", iolog_dir);
184: if (len <= 0 || (size_t)len >= sizeof(pathbuf)) {
185: errno = ENAMETOOLONG;
186: log_fatal(USE_ERRNO, "%s/seq", pathbuf);
187: }
188: fd = open(pathbuf, O_RDWR|O_CREAT, S_IRUSR|S_IWUSR);
189: if (fd == -1)
190: log_fatal(USE_ERRNO, N_("unable to open %s"), pathbuf);
191: lock_file(fd, SUDO_LOCK);
192:
193: /*
194: * If there is no seq file in iolog_dir and a fallback dir was
195: * specified, look for seq in the fallback dir. This is to work
196: * around a bug in sudo 1.8.5 and older where iolog_dir was not
197: * expanded before the sequence number was updated.
198: */
199: if (iolog_dir_fallback != NULL && fstat(fd, &sb) == 0 && sb.st_size == 0) {
200: char fallback[PATH_MAX];
201:
202: len = snprintf(fallback, sizeof(fallback), "%s/seq",
203: iolog_dir_fallback);
204: if (len > 0 && (size_t)len < sizeof(fallback)) {
205: int fd2 = open(fallback, O_RDWR|O_CREAT, S_IRUSR|S_IWUSR);
206: if (fd2 != -1) {
207: nread = read(fd2, buf, sizeof(buf) - 1);
208: if (nread > 0) {
209: if (buf[nread - 1] == '\n')
210: nread--;
211: buf[nread] = '\0';
212: id = strtoul(buf, &ep, 36);
213: if (ep == buf || *ep != '\0' || id >= sessid_max) {
214: sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
215: "%s: bad sequence number: %s", fallback, buf);
216: id = 0;
217: }
218: }
219: close(fd2);
220: }
221: }
222: }
223:
224: /* Read current seq number (base 36). */
225: if (id == 0) {
226: nread = read(fd, buf, sizeof(buf) - 1);
227: if (nread != 0) {
228: if (nread == -1)
229: log_fatal(USE_ERRNO, N_("unable to read %s"), pathbuf);
230: if (buf[nread - 1] == '\n')
231: nread--;
232: buf[nread] = '\0';
233: id = strtoul(buf, &ep, 36);
234: if (ep == buf || *ep != '\0' || id >= sessid_max) {
235: sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
236: "%s: bad sequence number: %s", pathbuf, buf);
237: id = 0;
238: }
239: }
240: }
241: id++;
242:
243: /*
244: * Convert id to a string and stash in sessid.
245: * Note that that least significant digits go at the end of the string.
246: */
247: for (i = 5; i >= 0; i--) {
248: buf[i] = b36char[id % 36];
249: id /= 36;
250: }
251: buf[6] = '\n';
252:
253: /* Stash id for logging purposes. */
254: memcpy(sessid, buf, 6);
255: sessid[6] = '\0';
256:
257: /* Rewind and overwrite old seq file, including the NUL byte. */
258: if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1 || write(fd, buf, 7) != 7)
259: log_fatal(USE_ERRNO, N_("unable to write to %s"), pathbuf);
260: close(fd);
261:
262: debug_return;
263: }
264:
265: /*
266: * Copy iolog_path to pathbuf and create the directory and any intermediate
267: * directories. If iolog_path ends in 'XXXXXX', use mkdtemp().
268: */
269: static size_t
270: mkdir_iopath(const char *iolog_path, char *pathbuf, size_t pathsize)
271: {
272: size_t len;
273: bool is_temp = false;
274: debug_decl(mkdir_iopath, SUDO_DEBUG_UTIL)
275:
276: len = strlcpy(pathbuf, iolog_path, pathsize);
277: if (len >= pathsize) {
278: errno = ENAMETOOLONG;
279: log_fatal(USE_ERRNO, "%s", iolog_path);
280: }
281:
282: /*
283: * Create path and intermediate subdirs as needed.
284: * If path ends in at least 6 Xs (ala POSIX mktemp), use mkdtemp().
285: */
286: if (len >= 6 && strcmp(&pathbuf[len - 6], "XXXXXX") == 0)
287: is_temp = true;
288: io_mkdirs(pathbuf, S_IRWXU, is_temp);
289:
290: debug_return_size_t(len);
291: }
292:
293: /*
294: * Append suffix to pathbuf after len chars and open the resulting file.
295: * Note that the size of pathbuf is assumed to be PATH_MAX.
296: * Uses zlib if docompress is true.
297: * Stores the open file handle which has the close-on-exec flag set.
298: */
299: static void
300: open_io_fd(char *pathbuf, size_t len, struct io_log_file *iol, bool docompress)
301: {
302: int fd;
303: debug_decl(open_io_fd, SUDO_DEBUG_UTIL)
304:
305: pathbuf[len] = '\0';
306: strlcat(pathbuf, iol->suffix, PATH_MAX);
307: if (iol->enabled) {
308: fd = open(pathbuf, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR);
309: if (fd != -1) {
310: fcntl(fd, F_SETFD, FD_CLOEXEC);
311: #ifdef HAVE_ZLIB_H
312: if (docompress)
313: iol->fd.g = gzdopen(fd, "w");
314: else
315: #endif
316: iol->fd.f = fdopen(fd, "w");
317: }
318: if (fd == -1 || iol->fd.v == NULL)
319: log_fatal(USE_ERRNO, N_("unable to create %s"), pathbuf);
320: } else {
321: /* Remove old log file if we recycled sequence numbers. */
322: unlink(pathbuf);
323: }
324: debug_return;
325: }
326:
327: /*
328: * Pull out I/O log related data from user_info and command_info arrays.
329: * Returns true if I/O logging is enabled, else false.
330: */
331: static bool
332: iolog_deserialize_info(struct iolog_details *details, char * const user_info[],
333: char * const command_info[])
334: {
335: const char *runas_uid_str = "0", *runas_euid_str = NULL;
336: const char *runas_gid_str = "0", *runas_egid_str = NULL;
337: const char *errstr;
338: char idbuf[MAX_UID_T_LEN + 2];
339: char * const *cur;
340: id_t id;
341: uid_t runas_uid = 0;
342: gid_t runas_gid = 0;
343: debug_decl(iolog_deserialize_info, SUDO_DEBUG_UTIL)
344:
345: details->lines = 24;
346: details->cols = 80;
347:
348: for (cur = user_info; *cur != NULL; cur++) {
349: switch (**cur) {
350: case 'c':
351: if (strncmp(*cur, "cols=", sizeof("cols=") - 1) == 0) {
352: int n = strtonum(*cur + sizeof("cols=") - 1, 1, INT_MAX, NULL);
353: if (n > 0)
354: details->cols = n;
355: continue;
356: }
357: if (strncmp(*cur, "cwd=", sizeof("cwd=") - 1) == 0) {
358: details->cwd = *cur + sizeof("cwd=") - 1;
359: continue;
360: }
361: break;
362: case 'l':
363: if (strncmp(*cur, "lines=", sizeof("lines=") - 1) == 0) {
364: int n = strtonum(*cur + sizeof("lines=") - 1, 1, INT_MAX, NULL);
365: if (n > 0)
366: details->lines = n;
367: continue;
368: }
369: break;
370: case 't':
371: if (strncmp(*cur, "tty=", sizeof("tty=") - 1) == 0) {
372: details->tty = *cur + sizeof("tty=") - 1;
373: continue;
374: }
375: break;
376: case 'u':
377: if (strncmp(*cur, "user=", sizeof("user=") - 1) == 0) {
378: details->user = *cur + sizeof("user=") - 1;
379: continue;
380: }
381: break;
382: }
383: }
384:
385: for (cur = command_info; *cur != NULL; cur++) {
386: switch (**cur) {
387: case 'c':
388: if (strncmp(*cur, "command=", sizeof("command=") - 1) == 0) {
389: details->command = *cur + sizeof("command=") - 1;
390: continue;
391: }
392: break;
393: case 'i':
394: if (strncmp(*cur, "iolog_path=", sizeof("iolog_path=") - 1) == 0) {
395: details->iolog_path = *cur + sizeof("iolog_path=") - 1;
396: continue;
397: }
398: if (strncmp(*cur, "iolog_stdin=", sizeof("iolog_stdin=") - 1) == 0) {
399: if (atobool(*cur + sizeof("iolog_stdin=") - 1) == true)
400: io_log_files[IOFD_STDIN].enabled = true;
401: continue;
402: }
403: if (strncmp(*cur, "iolog_stdout=", sizeof("iolog_stdout=") - 1) == 0) {
404: if (atobool(*cur + sizeof("iolog_stdout=") - 1) == true)
405: io_log_files[IOFD_STDOUT].enabled = true;
406: continue;
407: }
408: if (strncmp(*cur, "iolog_stderr=", sizeof("iolog_stderr=") - 1) == 0) {
409: if (atobool(*cur + sizeof("iolog_stderr=") - 1) == true)
410: io_log_files[IOFD_STDERR].enabled = true;
411: continue;
412: }
413: if (strncmp(*cur, "iolog_ttyin=", sizeof("iolog_ttyin=") - 1) == 0) {
414: if (atobool(*cur + sizeof("iolog_ttyin=") - 1) == true)
415: io_log_files[IOFD_TTYIN].enabled = true;
416: continue;
417: }
418: if (strncmp(*cur, "iolog_ttyout=", sizeof("iolog_ttyout=") - 1) == 0) {
419: if (atobool(*cur + sizeof("iolog_ttyout=") - 1) == true)
420: io_log_files[IOFD_TTYOUT].enabled = true;
421: continue;
422: }
423: if (strncmp(*cur, "iolog_compress=", sizeof("iolog_compress=") - 1) == 0) {
424: if (atobool(*cur + sizeof("iolog_compress=") - 1) == true)
425: iolog_compress = true; /* must be global */
426: continue;
427: }
428: break;
429: case 'm':
430: if (strncmp(*cur, "maxseq=", sizeof("maxseq=") - 1) == 0)
431: io_set_max_sessid(*cur + sizeof("maxseq=") - 1);
432: break;
433: case 'r':
434: if (strncmp(*cur, "runas_gid=", sizeof("runas_gid=") - 1) == 0) {
435: runas_gid_str = *cur + sizeof("runas_gid=") - 1;
436: continue;
437: }
438: if (strncmp(*cur, "runas_egid=", sizeof("runas_egid=") - 1) == 0) {
439: runas_egid_str = *cur + sizeof("runas_egid=") - 1;
440: continue;
441: }
442: if (strncmp(*cur, "runas_uid=", sizeof("runas_uid=") - 1) == 0) {
443: runas_uid_str = *cur + sizeof("runas_uid=") - 1;
444: continue;
445: }
446: if (strncmp(*cur, "runas_euid=", sizeof("runas_euid=") - 1) == 0) {
447: runas_euid_str = *cur + sizeof("runas_euid=") - 1;
448: continue;
449: }
450: break;
451: }
452: }
453:
454: /*
455: * Lookup runas user and group, preferring effective over real uid/gid.
456: */
457: if (runas_euid_str != NULL)
458: runas_uid_str = runas_euid_str;
459: if (runas_uid_str != NULL) {
460: id = atoid(runas_uid_str, NULL, NULL, &errstr);
461: if (errstr != NULL)
462: warningx("runas uid %s: %s", runas_uid_str, U_(errstr));
463: else
464: runas_uid = (uid_t)id;
465: }
466: if (runas_egid_str != NULL)
467: runas_gid_str = runas_egid_str;
468: if (runas_gid_str != NULL) {
469: id = atoid(runas_gid_str, NULL, NULL, &errstr);
470: if (errstr != NULL)
471: warningx("runas gid %s: %s", runas_gid_str, U_(errstr));
472: else
473: runas_gid = (gid_t)id;
474: }
475:
476: details->runas_pw = sudo_getpwuid(runas_uid);
477: if (details->runas_pw == NULL) {
478: idbuf[0] = '#';
479: strlcpy(&idbuf[1], runas_uid_str, sizeof(idbuf) - 1);
480: details->runas_pw = sudo_fakepwnam(idbuf, runas_gid);
481: }
482:
483: if (runas_gid != details->runas_pw->pw_gid) {
484: details->runas_gr = sudo_getgrgid(runas_gid);
485: if (details->runas_gr == NULL) {
486: idbuf[0] = '#';
487: strlcpy(&idbuf[1], runas_gid_str, sizeof(idbuf) - 1);
488: details->runas_gr = sudo_fakegrnam(idbuf);
489: }
490: }
491: debug_return_bool(
492: io_log_files[IOFD_STDIN].enabled || io_log_files[IOFD_STDOUT].enabled ||
493: io_log_files[IOFD_STDERR].enabled || io_log_files[IOFD_TTYIN].enabled ||
494: io_log_files[IOFD_TTYOUT].enabled);
495: }
496:
497: /*
498: * Write the "/log" file that contains the user and command info.
499: */
500: void
501: write_info_log(char *pathbuf, size_t len, struct iolog_details *details,
502: char * const argv[], struct timeval *now)
503: {
504: char * const *av;
505: FILE *fp;
506: int fd;
507:
508: pathbuf[len] = '\0';
509: strlcat(pathbuf, "/log", PATH_MAX);
510: fd = open(pathbuf, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR);
511: if (fd == -1 || (fp = fdopen(fd, "w")) == NULL)
512: log_fatal(USE_ERRNO, N_("unable to create %s"), pathbuf);
513:
514: fprintf(fp, "%lld:%s:%s:%s:%s:%d:%d\n%s\n%s", (long long)now->tv_sec,
515: details->user ? details->user : "unknown", details->runas_pw->pw_name,
516: details->runas_gr ? details->runas_gr->gr_name : "",
517: details->tty ? details->tty : "unknown", details->lines, details->cols,
518: details->cwd ? details->cwd : "unknown",
519: details->command ? details->command : "unknown");
520: for (av = argv + 1; *av != NULL; av++) {
521: fputc(' ', fp);
522: fputs(*av, fp);
523: }
524: fputc('\n', fp);
525: fclose(fp);
526: }
527:
528: static int
529: sudoers_io_open(unsigned int version, sudo_conv_t conversation,
530: sudo_printf_t plugin_printf, char * const settings[],
531: char * const user_info[], char * const command_info[],
532: int argc, char * const argv[], char * const user_env[], char * const args[])
533: {
534: struct iolog_details details;
535: char pathbuf[PATH_MAX], sessid[7];
536: char *tofree = NULL;
537: char * const *cur;
538: const char *debug_flags = NULL;
539: size_t len;
540: int i, rval = -1;
541: debug_decl(sudoers_io_open, SUDO_DEBUG_PLUGIN)
542:
543: sudo_conv = conversation;
544: sudo_printf = plugin_printf;
545:
546: /* If we have no command (because -V was specified) just return. */
547: if (argc == 0)
548: debug_return_bool(true);
549:
550: memset(&details, 0, sizeof(details));
551:
552: if (fatal_setjmp() != 0) {
553: /* called via fatal(), fatalx() or log_fatal() */
554: rval = -1;
555: goto done;
556: }
557:
558: bindtextdomain("sudoers", LOCALEDIR);
559:
560: sudo_setpwent();
561: sudo_setgrent();
562:
563: /*
564: * Check for debug flags in settings list.
565: */
566: for (cur = settings; *cur != NULL; cur++) {
567: if (strncmp(*cur, "debug_flags=", sizeof("debug_flags=") - 1) == 0)
568: debug_flags = *cur + sizeof("debug_flags=") - 1;
569: }
570: if (debug_flags != NULL)
571: sudo_debug_init(NULL, debug_flags);
572:
573: /*
574: * Pull iolog settings out of command_info.
575: */
576: if (!iolog_deserialize_info(&details, user_info, command_info)) {
577: rval = false;
578: goto done;
579: }
580:
581: /* If no I/O log path defined we need to figure it out ourselves. */
582: if (details.iolog_path == NULL) {
583: /* Get next session ID and convert it into a path. */
584: tofree = emalloc(sizeof(_PATH_SUDO_IO_LOGDIR) + sizeof(sessid) + 2);
585: memcpy(tofree, _PATH_SUDO_IO_LOGDIR, sizeof(_PATH_SUDO_IO_LOGDIR));
586: io_nextid(tofree, NULL, sessid);
587: snprintf(tofree + sizeof(_PATH_SUDO_IO_LOGDIR), sizeof(sessid) + 2,
588: "%c%c/%c%c/%c%c", sessid[0], sessid[1], sessid[2], sessid[3],
589: sessid[4], sessid[5]);
590: details.iolog_path = tofree;
591: }
592:
593: /*
594: * Make local copy of I/O log path and create it, along with any
595: * intermediate subdirs. Calls mkdtemp() if iolog_path ends in XXXXXX.
596: */
597: len = mkdir_iopath(details.iolog_path, pathbuf, sizeof(pathbuf));
598: if (len >= sizeof(pathbuf))
599: goto done;
600:
601: /* Write log file with user and command details. */
602: gettimeofday(&last_time, NULL);
603: write_info_log(pathbuf, len, &details, argv, &last_time);
604:
605: /* Create the timing and I/O log files. */
606: for (i = 0; i < IOFD_MAX; i++)
607: open_io_fd(pathbuf, len, &io_log_files[i], iolog_compress);
608:
609: /*
610: * Clear I/O log function pointers for disabled log functions.
611: */
612: if (!io_log_files[IOFD_STDIN].enabled)
613: sudoers_io.log_stdin = NULL;
614: if (!io_log_files[IOFD_STDOUT].enabled)
615: sudoers_io.log_stdout = NULL;
616: if (!io_log_files[IOFD_STDERR].enabled)
617: sudoers_io.log_stderr = NULL;
618: if (!io_log_files[IOFD_TTYIN].enabled)
619: sudoers_io.log_ttyin = NULL;
620: if (!io_log_files[IOFD_TTYOUT].enabled)
621: sudoers_io.log_ttyout = NULL;
622:
623: rval = true;
624:
625: done:
626: fatal_disable_setjmp();
627: efree(tofree);
628: if (details.runas_pw)
629: sudo_pw_delref(details.runas_pw);
630: sudo_endpwent();
631: if (details.runas_gr)
632: sudo_gr_delref(details.runas_gr);
633: sudo_endgrent();
634:
635: debug_return_bool(rval);
636: }
637:
638: static void
639: sudoers_io_close(int exit_status, int error)
640: {
641: int i;
642: debug_decl(sudoers_io_close, SUDO_DEBUG_PLUGIN)
643:
644: if (fatal_setjmp() != 0) {
645: /* called via fatal(), fatalx() or log_fatal() */
646: fatal_disable_setjmp();
647: debug_return;
648: }
649:
650: for (i = 0; i < IOFD_MAX; i++) {
651: if (io_log_files[i].fd.v == NULL)
652: continue;
653: #ifdef HAVE_ZLIB_H
654: if (iolog_compress)
655: gzclose(io_log_files[i].fd.g);
656: else
657: #endif
658: fclose(io_log_files[i].fd.f);
659: }
660: debug_return;
661: }
662:
663: static int
664: sudoers_io_version(int verbose)
665: {
666: debug_decl(sudoers_io_version, SUDO_DEBUG_PLUGIN)
667:
668: if (fatal_setjmp() != 0) {
669: /* called via fatal(), fatalx() or log_fatal() */
670: fatal_disable_setjmp();
671: debug_return_bool(-1);
672: }
673:
674: sudo_printf(SUDO_CONV_INFO_MSG, "Sudoers I/O plugin version %s\n",
675: PACKAGE_VERSION);
676:
677: debug_return_bool(true);
678: }
679:
680: /*
681: * Generic I/O logging function. Called by the I/O logging entry points.
682: */
683: static int
684: sudoers_io_log(const char *buf, unsigned int len, int idx)
685: {
686: struct timeval now, delay;
687: debug_decl(sudoers_io_version, SUDO_DEBUG_PLUGIN)
688:
689: gettimeofday(&now, NULL);
690:
691: if (fatal_setjmp() != 0) {
692: /* called via fatal(), fatalx() or log_fatal() */
693: fatal_disable_setjmp();
694: debug_return_bool(-1);
695: }
696:
697: #ifdef HAVE_ZLIB_H
698: if (iolog_compress)
699: ignore_result(gzwrite(io_log_files[idx].fd.g, (const voidp)buf, len));
700: else
701: #endif
702: ignore_result(fwrite(buf, 1, len, io_log_files[idx].fd.f));
703: sudo_timevalsub(&now, &last_time, &delay);
704: #ifdef HAVE_ZLIB_H
705: if (iolog_compress)
706: gzprintf(io_log_files[IOFD_TIMING].fd.g, "%d %f %u\n", idx,
707: delay.tv_sec + ((double)delay.tv_usec / 1000000), len);
708: else
709: #endif
710: fprintf(io_log_files[IOFD_TIMING].fd.f, "%d %f %u\n", idx,
711: delay.tv_sec + ((double)delay.tv_usec / 1000000), len);
712: last_time.tv_sec = now.tv_sec;
713: last_time.tv_usec = now.tv_usec;
714:
715: debug_return_bool(true);
716: }
717:
718: static int
719: sudoers_io_log_ttyin(const char *buf, unsigned int len)
720: {
721: return sudoers_io_log(buf, len, IOFD_TTYIN);
722: }
723:
724: static int
725: sudoers_io_log_ttyout(const char *buf, unsigned int len)
726: {
727: return sudoers_io_log(buf, len, IOFD_TTYOUT);
728: }
729:
730: static int
731: sudoers_io_log_stdin(const char *buf, unsigned int len)
732: {
733: return sudoers_io_log(buf, len, IOFD_STDIN);
734: }
735:
736: static int
737: sudoers_io_log_stdout(const char *buf, unsigned int len)
738: {
739: return sudoers_io_log(buf, len, IOFD_STDOUT);
740: }
741:
742: static int
743: sudoers_io_log_stderr(const char *buf, unsigned int len)
744: {
745: return sudoers_io_log(buf, len, IOFD_STDERR);
746: }
747:
748: __dso_public struct io_plugin sudoers_io = {
749: SUDO_IO_PLUGIN,
750: SUDO_API_VERSION,
751: sudoers_io_open,
752: sudoers_io_close,
753: sudoers_io_version,
754: sudoers_io_log_ttyin,
755: sudoers_io_log_ttyout,
756: sudoers_io_log_stdin,
757: sudoers_io_log_stdout,
758: sudoers_io_log_stderr
759: };
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