Annotation of embedaddon/sudo/plugins/sudoers/sudoreplay.c, revision 1.1.1.6
1.1 misho 1: /*
1.1.1.4 misho 2: * Copyright (c) 2009-2013 Todd C. Miller <Todd.Miller@courtesan.com>
1.1 misho 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>
1.1.1.3 misho 20: #include <sys/uio.h>
1.1 misho 21: #include <sys/stat.h>
22: #include <sys/time.h>
23: #include <sys/wait.h>
24: #include <sys/ioctl.h>
25: #include <stdio.h>
26: #ifdef STDC_HEADERS
27: # include <stdlib.h>
28: # include <stddef.h>
29: #else
30: # ifdef HAVE_STDLIB_H
31: # include <stdlib.h>
32: # endif
33: #endif /* STDC_HEADERS */
34: #ifdef HAVE_STRING_H
35: # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
36: # include <memory.h>
37: # endif
38: # include <string.h>
39: #endif /* HAVE_STRING_H */
40: #ifdef HAVE_STRINGS_H
41: # include <strings.h>
42: #endif /* HAVE_STRINGS_H */
43: #ifdef HAVE_UNISTD_H
44: # include <unistd.h>
45: #endif /* HAVE_UNISTD_H */
1.1.1.6 ! misho 46: #ifdef TIME_WITH_SYS_TIME
1.1 misho 47: # include <time.h>
48: #endif
1.1.1.2 misho 49: #ifndef HAVE_STRUCT_TIMESPEC
1.1 misho 50: # include "compat/timespec.h"
51: #endif
52: #include <ctype.h>
53: #include <errno.h>
54: #include <limits.h>
55: #include <fcntl.h>
56: #ifdef HAVE_DIRENT_H
57: # include <dirent.h>
58: # define NAMLEN(dirent) strlen((dirent)->d_name)
59: #else
60: # define dirent direct
61: # define NAMLEN(dirent) (dirent)->d_namlen
62: # ifdef HAVE_SYS_NDIR_H
63: # include <sys/ndir.h>
64: # endif
65: # ifdef HAVE_SYS_DIR_H
66: # include <sys/dir.h>
67: # endif
68: # ifdef HAVE_NDIR_H
69: # include <ndir.h>
70: # endif
71: #endif
72: #ifdef HAVE_REGCOMP
73: # include <regex.h>
74: #endif
75: #ifdef HAVE_ZLIB_H
76: # include <zlib.h>
77: #endif
78: #include <signal.h>
1.1.1.2 misho 79: #ifdef HAVE_STDBOOL_H
80: # include <stdbool.h>
81: #else
82: # include "compat/stdbool.h"
83: #endif /* HAVE_STDBOOL_H */
1.1.1.5 misho 84: #ifdef HAVE_GETOPT_LONG
85: # include <getopt.h>
86: # else
87: # include "compat/getopt.h"
88: #endif /* HAVE_GETOPT_LONG */
1.1 misho 89:
90: #include <pathnames.h>
91:
1.1.1.6 ! misho 92: #include "gettext.h" /* must be included before missing.h */
! 93:
1.1 misho 94: #include "missing.h"
95: #include "alloc.h"
1.1.1.5 misho 96: #include "fatal.h"
1.1.1.4 misho 97: #include "logging.h"
1.1.1.5 misho 98: #include "iolog.h"
1.1.1.6 ! misho 99: #include "queue.h"
1.1.1.2 misho 100: #include "sudo_plugin.h"
101: #include "sudo_conf.h"
102: #include "sudo_debug.h"
1.1.1.6 ! misho 103: #include "sudo_event.h"
! 104: #include "sudo_util.h"
1.1 misho 105:
106: #ifndef LINE_MAX
107: # define LINE_MAX 2048
108: #endif
109:
110: /*
111: * Info present in the I/O log file
112: */
113: struct log_info {
114: char *cwd;
115: char *user;
116: char *runas_user;
117: char *runas_group;
118: char *tty;
119: char *cmd;
120: time_t tstamp;
1.1.1.2 misho 121: int rows;
122: int cols;
1.1 misho 123: };
124:
1.1.1.6 ! misho 125: /* Closure for write_output */
! 126: struct write_closure {
! 127: struct sudo_event *wevent;
! 128: struct iovec *iov;
! 129: unsigned int iovcnt;
! 130: size_t nbytes;
! 131: };
! 132:
1.1 misho 133: /*
134: * Handle expressions like:
135: * ( user millert or user root ) and tty console and command /bin/sh
136: */
1.1.1.6 ! misho 137: STAILQ_HEAD(search_node_list, search_node);
! 138: struct search_node {
! 139: STAILQ_ENTRY(search_node) entries;
1.1 misho 140: #define ST_EXPR 1
141: #define ST_TTY 2
142: #define ST_USER 3
143: #define ST_PATTERN 4
144: #define ST_RUNASUSER 5
145: #define ST_RUNASGROUP 6
146: #define ST_FROMDATE 7
147: #define ST_TODATE 8
148: #define ST_CWD 9
149: char type;
1.1.1.6 ! misho 150: bool negated;
! 151: bool or;
1.1 misho 152: union {
153: #ifdef HAVE_REGCOMP
154: regex_t cmdre;
1.1.1.6 ! misho 155: #else
! 156: char *pattern;
1.1 misho 157: #endif
158: time_t tstamp;
159: char *cwd;
160: char *tty;
161: char *user;
162: char *runas_group;
163: char *runas_user;
1.1.1.6 ! misho 164: struct search_node_list expr;
1.1 misho 165: void *ptr;
166: } u;
1.1.1.6 ! misho 167: };
! 168:
! 169: static struct search_node_list search_expr = STAILQ_HEAD_INITIALIZER(search_expr);
1.1 misho 170:
1.1.1.6 ! misho 171: static int timing_idx_adj;
1.1 misho 172:
1.1.1.6 ! misho 173: static double speed_factor = 1.0;
1.1.1.5 misho 174:
1.1 misho 175: static const char *session_dir = _PATH_SUDO_IO_LOGDIR;
176:
1.1.1.5 misho 177: static const char short_opts[] = "d:f:hlm:s:V";
178: static struct option long_opts[] = {
179: { "directory", required_argument, NULL, 'd' },
180: { "filter", required_argument, NULL, 'f' },
181: { "help", no_argument, NULL, 'h' },
182: { "list", no_argument, NULL, 'l' },
183: { "max-wait", required_argument, NULL, 'm' },
184: { "speed", required_argument, NULL, 's' },
185: { "version", no_argument, NULL, 'V' },
186: { NULL, no_argument, NULL, '\0' },
1.1 misho 187: };
188:
1.1.1.6 ! misho 189: /* XXX move to separate header? */
1.1 misho 190: extern char *get_timestr(time_t, int);
1.1.1.6 ! misho 191: extern time_t get_date(char *);
1.1 misho 192:
193: static int list_sessions(int, char **, const char *, const char *, const char *);
1.1.1.5 misho 194: static int open_io_fd(char *path, int len, struct io_log_file *iol);
1.1.1.6 ! misho 195: static int parse_expr(struct search_node_list *, char **, bool);
1.1 misho 196: static int parse_timing(const char *buf, const char *decimal, int *idx, double *seconds, size_t *nbytes);
1.1.1.2 misho 197: static struct log_info *parse_logfile(char *logfile);
1.1.1.6 ! misho 198: static void check_input(int fd, int what, void *v);
1.1.1.2 misho 199: static void free_log_info(struct log_info *li);
1.1.1.6 ! misho 200: static void help(void) __attribute__((__noreturn__));
! 201: static void replay_session(const double max_wait, const char *decimal);
1.1.1.4 misho 202: static void sudoreplay_cleanup(void);
1.1.1.6 ! misho 203: static void sudoreplay_handler(int);
! 204: static void usage(int);
! 205: static void write_output(int fd, int what, void *v);
1.1 misho 206:
207: #ifdef HAVE_REGCOMP
208: # define REGEX_T regex_t
209: #else
210: # define REGEX_T char
211: #endif
212:
213: #define VALID_ID(s) (isalnum((unsigned char)(s)[0]) && \
214: isalnum((unsigned char)(s)[1]) && isalnum((unsigned char)(s)[2]) && \
215: isalnum((unsigned char)(s)[3]) && isalnum((unsigned char)(s)[4]) && \
216: isalnum((unsigned char)(s)[5]) && (s)[6] == '\0')
217:
218: #define IS_IDLOG(s) ( \
219: isalnum((unsigned char)(s)[0]) && isalnum((unsigned char)(s)[1]) && \
220: (s)[2] == '/' && \
221: isalnum((unsigned char)(s)[3]) && isalnum((unsigned char)(s)[4]) && \
222: (s)[5] == '/' && \
223: isalnum((unsigned char)(s)[6]) && isalnum((unsigned char)(s)[7]) && \
224: (s)[8] == '/' && (s)[9] == 'l' && (s)[10] == 'o' && (s)[11] == 'g' && \
1.1.1.2 misho 225: (s)[12] == '\0')
1.1 misho 226:
1.1.1.4 misho 227: __dso_public int main(int argc, char *argv[]);
228:
1.1 misho 229: int
230: main(int argc, char *argv[])
231: {
1.1.1.3 misho 232: int ch, idx, plen, exitcode = 0, rows = 0, cols = 0;
1.1.1.6 ! misho 233: bool def_filter = true, listonly = false;
1.1.1.4 misho 234: const char *decimal, *id, *user = NULL, *pattern = NULL, *tty = NULL;
1.1.1.6 ! misho 235: char *cp, *ep, path[PATH_MAX];
1.1.1.2 misho 236: struct log_info *li;
1.1.1.6 ! misho 237: double max_wait = 0;
1.1.1.2 misho 238: debug_decl(main, SUDO_DEBUG_MAIN)
239:
240: #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
241: {
242: extern char *malloc_options;
243: malloc_options = "AFGJPR";
244: }
245: #endif
1.1 misho 246:
1.1.1.6 ! misho 247: initprogname(argc > 0 ? argv[0] : "sudoreplay");
! 248: setlocale(LC_ALL, "");
1.1 misho 249: decimal = localeconv()->decimal_point;
250: bindtextdomain("sudoers", LOCALEDIR); /* XXX - should have sudoreplay domain */
251: textdomain("sudoers");
252:
1.1.1.4 misho 253: /* Register fatal/fatalx callback. */
254: fatal_callback_register(sudoreplay_cleanup);
255:
1.1.1.2 misho 256: /* Read sudo.conf. */
1.1.1.4 misho 257: sudo_conf_read(NULL);
1.1.1.2 misho 258:
1.1.1.5 misho 259: while ((ch = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
260: switch (ch) {
1.1 misho 261: case 'd':
262: session_dir = optarg;
263: break;
264: case 'f':
265: /* Set the replay filter. */
1.1.1.5 misho 266: def_filter = false;
1.1 misho 267: for (cp = strtok(optarg, ","); cp; cp = strtok(NULL, ",")) {
268: if (strcmp(cp, "stdout") == 0)
1.1.1.5 misho 269: io_log_files[IOFD_STDOUT].enabled = true;
1.1 misho 270: else if (strcmp(cp, "stderr") == 0)
1.1.1.5 misho 271: io_log_files[IOFD_STDERR].enabled = true;
1.1 misho 272: else if (strcmp(cp, "ttyout") == 0)
1.1.1.5 misho 273: io_log_files[IOFD_TTYOUT].enabled = true;
1.1 misho 274: else
1.1.1.6 ! misho 275: fatalx(U_("invalid filter option: %s"), optarg);
1.1 misho 276: }
277: break;
278: case 'h':
279: help();
280: /* NOTREACHED */
281: case 'l':
1.1.1.2 misho 282: listonly = true;
1.1 misho 283: break;
284: case 'm':
285: errno = 0;
286: max_wait = strtod(optarg, &ep);
287: if (*ep != '\0' || errno != 0)
1.1.1.6 ! misho 288: fatalx(U_("invalid max wait: %s"), optarg);
1.1 misho 289: break;
290: case 's':
291: errno = 0;
1.1.1.6 ! misho 292: speed_factor = strtod(optarg, &ep);
1.1 misho 293: if (*ep != '\0' || errno != 0)
1.1.1.6 ! misho 294: fatalx(U_("invalid speed factor: %s"), optarg);
1.1 misho 295: break;
296: case 'V':
297: (void) printf(_("%s version %s\n"), getprogname(), PACKAGE_VERSION);
1.1.1.2 misho 298: goto done;
1.1 misho 299: default:
300: usage(1);
301: /* NOTREACHED */
302: }
303:
304: }
305: argc -= optind;
306: argv += optind;
307:
1.1.1.2 misho 308: if (listonly) {
309: exitcode = list_sessions(argc, argv, pattern, user, tty);
310: goto done;
311: }
1.1 misho 312:
313: if (argc != 1)
314: usage(1);
315:
1.1.1.5 misho 316: /* By default we replay stdout, stderr and ttyout. */
317: if (def_filter) {
318: io_log_files[IOFD_STDOUT].enabled = true;
319: io_log_files[IOFD_STDERR].enabled = true;
320: io_log_files[IOFD_TTYOUT].enabled = true;
321: }
322:
1.1 misho 323: /* 6 digit ID in base 36, e.g. 01G712AB or free-form name */
324: id = argv[0];
325: if (VALID_ID(id)) {
326: plen = snprintf(path, sizeof(path), "%s/%.2s/%.2s/%.2s/timing",
327: session_dir, id, &id[2], &id[4]);
1.1.1.6 ! misho 328: if (plen <= 0 || (size_t)plen >= sizeof(path))
! 329: fatalx(U_("%s/%.2s/%.2s/%.2s/timing: %s"), session_dir,
1.1 misho 330: id, &id[2], &id[4], strerror(ENAMETOOLONG));
331: } else {
332: plen = snprintf(path, sizeof(path), "%s/%s/timing",
333: session_dir, id);
1.1.1.6 ! misho 334: if (plen <= 0 || (size_t)plen >= sizeof(path))
! 335: fatalx(U_("%s/%s/timing: %s"), session_dir,
1.1 misho 336: id, strerror(ENAMETOOLONG));
337: }
338: plen -= 7;
339:
340: /* Open files for replay, applying replay filter for the -f flag. */
341: for (idx = 0; idx < IOFD_MAX; idx++) {
1.1.1.5 misho 342: if (open_io_fd(path, plen, &io_log_files[idx]) == -1)
1.1.1.6 ! misho 343: fatal(U_("unable to open %s"), path);
1.1 misho 344: }
345:
1.1.1.2 misho 346: /* Parse log file. */
1.1 misho 347: path[plen] = '\0';
348: strlcat(path, "/log", sizeof(path));
1.1.1.2 misho 349: if ((li = parse_logfile(path)) == NULL)
350: exit(1);
351: printf(_("Replaying sudo session: %s\n"), li->cmd);
352:
353: /* Make sure the terminal is large enough. */
354: get_ttysize(&rows, &cols);
355: if (li->rows != 0 && li->cols != 0) {
356: if (li->rows > rows) {
357: printf(_("Warning: your terminal is too small to properly replay the log.\n"));
358: printf(_("Log geometry is %d x %d, your terminal's geometry is %d x %d."), li->rows, li->cols, rows, cols);
359: }
360: }
361:
362: /* Done with parsed log file. */
363: free_log_info(li);
364: li = NULL;
1.1 misho 365:
1.1.1.6 ! misho 366: /* Replay session corresponding to io_log_files[]. */
! 367: replay_session(max_wait, decimal);
! 368:
! 369: term_restore(STDIN_FILENO, 1);
! 370: done:
! 371: sudo_debug_exit_int(__func__, __FILE__, __LINE__, sudo_debug_subsys, exitcode);
! 372: exit(exitcode);
! 373: }
! 374:
! 375: static void
! 376: replay_session(const double max_wait, const char *decimal)
! 377: {
! 378: struct sudo_event *input_ev, *output_ev;
! 379: unsigned int i, iovcnt = 0, iovmax = 0;
! 380: struct sudo_event_base *evbase;
! 381: struct iovec iovb, *iov = &iovb;
! 382: bool interactive;
! 383: struct write_closure wc;
! 384: char buf[LINE_MAX];
! 385: sigaction_t sa;
! 386: int idx;
! 387: debug_decl(replay_session, SUDO_DEBUG_UTIL)
! 388:
! 389: /* Restore tty settings if interupted. */
1.1 misho 390: fflush(stdout);
1.1.1.2 misho 391: memset(&sa, 0, sizeof(sa));
1.1 misho 392: sigemptyset(&sa.sa_mask);
393: sa.sa_flags = SA_RESETHAND;
1.1.1.4 misho 394: sa.sa_handler = sudoreplay_handler;
1.1 misho 395: (void) sigaction(SIGINT, &sa, NULL);
396: (void) sigaction(SIGTERM, &sa, NULL);
397: (void) sigaction(SIGHUP, &sa, NULL);
1.1.1.6 ! misho 398: (void) sigaction(SIGQUIT, &sa, NULL);
! 399:
! 400: /* Don't suspend as we cannot restore the screen on resume. */
1.1 misho 401: sa.sa_flags = SA_RESTART;
402: sa.sa_handler = SIG_IGN;
403: (void) sigaction(SIGTSTP, &sa, NULL);
404:
405: /* XXX - read user input from /dev/tty and set STDOUT to raw if not a pipe */
406: /* Set stdin to raw mode if it is a tty */
407: interactive = isatty(STDIN_FILENO);
408: if (interactive) {
1.1.1.6 ! misho 409: idx = fcntl(STDIN_FILENO, F_GETFL, 0);
! 410: if (idx != -1)
! 411: (void) fcntl(STDIN_FILENO, F_SETFL, idx | O_NONBLOCK);
1.1 misho 412: if (!term_raw(STDIN_FILENO, 1))
1.1.1.6 ! misho 413: fatal(U_("unable to set tty to raw mode"));
1.1 misho 414: }
415:
1.1.1.6 ! misho 416: /* Setup event base and input/output events. */
! 417: evbase = sudo_ev_base_alloc();
! 418: if (evbase == NULL)
! 419: fatal(NULL);
! 420: input_ev = sudo_ev_alloc(STDIN_FILENO, interactive ? SUDO_EV_READ :
! 421: SUDO_EV_TIMEOUT, check_input, sudo_ev_self_cbarg());
! 422: if (input_ev == NULL)
! 423: fatal(NULL);
! 424: output_ev = sudo_ev_alloc(STDIN_FILENO, SUDO_EV_WRITE, write_output, &wc);
! 425: if (output_ev == NULL)
! 426: fatal(NULL);
! 427:
1.1 misho 428: /*
1.1.1.6 ! misho 429: * Read each line of the timing file, displaying the output streams.
1.1 misho 430: */
431: #ifdef HAVE_ZLIB_H
1.1.1.5 misho 432: while (gzgets(io_log_files[IOFD_TIMING].fd.g, buf, sizeof(buf)) != NULL) {
1.1 misho 433: #else
1.1.1.5 misho 434: while (fgets(buf, sizeof(buf), io_log_files[IOFD_TIMING].fd.f) != NULL) {
1.1 misho 435: #endif
1.1.1.6 ! misho 436: size_t len, nbytes, nread;
! 437: double seconds, to_wait;
! 438: struct timeval timeout;
! 439: bool need_nlcr = false;
1.1.1.3 misho 440: char last_char = '\0';
441:
1.1.1.6 ! misho 442: buf[strcspn(buf, "\n")] = '\0';
1.1 misho 443: if (!parse_timing(buf, decimal, &idx, &seconds, &nbytes))
1.1.1.6 ! misho 444: fatalx(U_("invalid timing file line: %s"), buf);
1.1 misho 445:
446: /* Adjust delay using speed factor and clamp to max_wait */
1.1.1.6 ! misho 447: to_wait = seconds / speed_factor;
1.1 misho 448: if (max_wait && to_wait > max_wait)
449: to_wait = max_wait;
1.1.1.6 ! misho 450:
! 451: /* Convert delay to a timeval. */
! 452: timeout.tv_sec = to_wait;
! 453: timeout.tv_usec = (to_wait - timeout.tv_sec) * 1000000.0;
! 454:
! 455: /* Run event event loop to delay and get keyboard input. */
! 456: sudo_ev_add(evbase, input_ev, &timeout, false);
! 457: sudo_ev_loop(evbase, 0);
1.1 misho 458:
1.1.1.5 misho 459: /* Even if we are not replaying, we still have to delay. */
460: if (io_log_files[idx].fd.v == NULL)
1.1 misho 461: continue;
462:
1.1.1.3 misho 463: /* Check whether we need to convert newline to CR LF pairs. */
464: if (interactive)
465: need_nlcr = (idx == IOFD_STDOUT || idx == IOFD_STDERR);
466:
1.1 misho 467: /* All output is sent to stdout. */
1.1.1.6 ! misho 468: /* XXX - assumes no wall clock time spent writing output. */
1.1 misho 469: while (nbytes != 0) {
470: if (nbytes > sizeof(buf))
471: len = sizeof(buf);
472: else
473: len = nbytes;
474: #ifdef HAVE_ZLIB_H
1.1.1.5 misho 475: nread = gzread(io_log_files[idx].fd.g, buf, len);
1.1 misho 476: #else
1.1.1.5 misho 477: nread = fread(buf, 1, len, io_log_files[idx].fd.f);
1.1 misho 478: #endif
479: nbytes -= nread;
1.1.1.3 misho 480:
481: /* Convert newline to carriage return + linefeed if needed. */
482: if (need_nlcr) {
483: size_t remainder = nread;
484: size_t linelen;
1.1.1.6 ! misho 485: char *cp = buf;
! 486: char *ep = buf - 1;
! 487:
1.1.1.3 misho 488: /* Handle a "\r\n" pair that spans a buffer. */
489: if (last_char == '\r' && buf[0] == '\n') {
490: ep++;
491: remainder--;
492: }
1.1.1.6 ! misho 493:
! 494: iovcnt = 0;
1.1.1.3 misho 495: while ((ep = memchr(ep + 1, '\n', remainder)) != NULL) {
496: /* Is there already a carriage return? */
497: if (cp != ep && ep[-1] == '\r') {
498: remainder = (size_t)(&buf[nread - 1] - ep);
499: continue;
1.1 misho 500: }
1.1.1.3 misho 501:
502: /* Store the line in iov followed by \r\n pair. */
503: if (iovcnt + 3 > iovmax) {
1.1.1.6 ! misho 504: iov = iovmax ?
! 505: erealloc3(iov, iovmax <<= 1, sizeof(*iov)) :
! 506: emalloc2(iovmax = 32, sizeof(*iov));
1.1.1.3 misho 507: }
508: linelen = (size_t)(ep - cp) + 1;
509: iov[iovcnt].iov_base = cp;
510: iov[iovcnt].iov_len = linelen - 1; /* not including \n */
511: iovcnt++;
512: iov[iovcnt].iov_base = "\r\n";
513: iov[iovcnt].iov_len = 2;
514: iovcnt++;
515: cp = ep + 1;
516: remainder -= linelen;
517: }
1.1.1.6 ! misho 518: if ((size_t)(cp - buf) != nread) {
1.1.1.3 misho 519: /*
520: * Partial line without a linefeed or multiple lines
521: * with \r\n pairs.
522: */
523: iov[iovcnt].iov_base = cp;
524: iov[iovcnt].iov_len = nread - (cp - buf);
525: iovcnt++;
1.1 misho 526: }
1.1.1.3 misho 527: last_char = buf[nread - 1]; /* stash last char of old buffer */
528: } else {
529: /* No conversion needed. */
530: iov[0].iov_base = buf;
531: iov[0].iov_len = nread;
532: iovcnt = 1;
533: }
1.1 misho 534:
1.1.1.6 ! misho 535: /* Setup closure for write_output. */
! 536: wc.wevent = output_ev;
! 537: wc.iov = iov;
! 538: wc.iovcnt = iovcnt;
! 539: wc.nbytes = 0;
! 540: for (i = 0; i < iovcnt; i++)
! 541: wc.nbytes += iov[i].iov_len;
! 542:
! 543: /* Run event event loop to write output. */
! 544: /* XXX - should use a single event loop with a circular buffer. */
! 545: sudo_ev_add(evbase, output_ev, NULL, false);
! 546: sudo_ev_loop(evbase, 0);
! 547: }
1.1 misho 548: }
1.1.1.6 ! misho 549: debug_return;
1.1 misho 550: }
551:
552: static int
1.1.1.5 misho 553: open_io_fd(char *path, int len, struct io_log_file *iol)
1.1 misho 554: {
1.1.1.3 misho 555: debug_decl(open_io_fd, SUDO_DEBUG_UTIL)
556:
1.1.1.5 misho 557: if (!iol->enabled)
558: debug_return_int(0);
1.1 misho 559:
1.1.1.5 misho 560: path[len] = '\0';
561: strlcat(path, iol->suffix, PATH_MAX);
1.1 misho 562: #ifdef HAVE_ZLIB_H
1.1.1.5 misho 563: iol->fd.g = gzopen(path, "r");
1.1 misho 564: #else
1.1.1.5 misho 565: iol->fd.f = fopen(path, "r");
1.1 misho 566: #endif
1.1.1.5 misho 567: debug_return_int(iol->fd.v ? 0 : -1);
1.1 misho 568: }
569:
1.1.1.6 ! misho 570: static void
! 571: write_output(int fd, int what, void *v)
1.1.1.3 misho 572: {
1.1.1.6 ! misho 573: struct write_closure *wc = v;
! 574: ssize_t nwritten;
! 575: size_t count, remainder;
! 576: unsigned int i;
! 577: debug_decl(write_output, SUDO_DEBUG_UTIL)
! 578:
! 579: nwritten = writev(STDOUT_FILENO, wc->iov, wc->iovcnt);
! 580: switch (nwritten) {
! 581: case -1:
! 582: if (errno != EINTR && errno != EAGAIN)
! 583: fatal(U_("unable to write to %s"), "stdout");
! 584: break;
! 585: case 0:
! 586: break;
! 587: default:
! 588: remainder = wc->nbytes - nwritten;
! 589: if (remainder == 0) {
! 590: /* writev completed */
! 591: debug_return;
! 592: }
! 593:
! 594: /* short writev, adjust iov so we can write the remainder. */
! 595: count = 0;
! 596: i = wc->iovcnt;
! 597: while (i--) {
! 598: count += wc->iov[i].iov_len;
! 599: if (count == remainder) {
! 600: wc->iov += i;
! 601: wc->iovcnt -= i;
! 602: break;
! 603: }
! 604: if (count > remainder) {
! 605: size_t off = (count - remainder);
! 606: wc->iov[i].iov_base = (char *)wc->iov[i].iov_base + off;
! 607: wc->iov[i].iov_len -= off;
! 608: wc->iov += i;
! 609: wc->iovcnt -= i;
1.1.1.3 misho 610: break;
611: }
612: }
613: break;
614: }
1.1.1.6 ! misho 615:
! 616: /* Reschedule event to write remainder. */
! 617: sudo_ev_add(sudo_ev_get_base(wc->wevent), wc->wevent, NULL, false);
! 618: debug_return;
1.1.1.3 misho 619: }
620:
621: /*
1.1 misho 622: * Build expression list from search args
623: */
624: static int
1.1.1.6 ! misho 625: parse_expr(struct search_node_list *head, char *argv[], bool sub_expr)
1.1 misho 626: {
1.1.1.6 ! misho 627: bool or = false, not = false;
! 628: struct search_node *sn;
! 629: char type, **av;
1.1.1.2 misho 630: debug_decl(parse_expr, SUDO_DEBUG_UTIL)
1.1 misho 631:
1.1.1.6 ! misho 632: for (av = argv; *av != NULL; av++) {
1.1 misho 633: switch (av[0][0]) {
634: case 'a': /* and (ignore) */
635: if (strncmp(*av, "and", strlen(*av)) != 0)
636: goto bad;
637: continue;
638: case 'o': /* or */
639: if (strncmp(*av, "or", strlen(*av)) != 0)
640: goto bad;
1.1.1.6 ! misho 641: or = true;
1.1 misho 642: continue;
643: case '!': /* negate */
644: if (av[0][1] != '\0')
645: goto bad;
1.1.1.6 ! misho 646: not = true;
1.1 misho 647: continue;
648: case 'c': /* command */
649: if (av[0][1] == '\0')
1.1.1.6 ! misho 650: fatalx(U_("ambiguous expression \"%s\""), *av);
1.1 misho 651: if (strncmp(*av, "cwd", strlen(*av)) == 0)
652: type = ST_CWD;
653: else if (strncmp(*av, "command", strlen(*av)) == 0)
654: type = ST_PATTERN;
655: else
656: goto bad;
657: break;
658: case 'f': /* from date */
659: if (strncmp(*av, "fromdate", strlen(*av)) != 0)
660: goto bad;
661: type = ST_FROMDATE;
662: break;
663: case 'g': /* runas group */
664: if (strncmp(*av, "group", strlen(*av)) != 0)
665: goto bad;
666: type = ST_RUNASGROUP;
667: break;
668: case 'r': /* runas user */
669: if (strncmp(*av, "runas", strlen(*av)) != 0)
670: goto bad;
671: type = ST_RUNASUSER;
672: break;
673: case 't': /* tty or to date */
674: if (av[0][1] == '\0')
1.1.1.6 ! misho 675: fatalx(U_("ambiguous expression \"%s\""), *av);
1.1 misho 676: if (strncmp(*av, "todate", strlen(*av)) == 0)
677: type = ST_TODATE;
678: else if (strncmp(*av, "tty", strlen(*av)) == 0)
679: type = ST_TTY;
680: else
681: goto bad;
682: break;
683: case 'u': /* user */
684: if (strncmp(*av, "user", strlen(*av)) != 0)
685: goto bad;
686: type = ST_USER;
687: break;
688: case '(': /* start sub-expression */
689: if (av[0][1] != '\0')
690: goto bad;
691: type = ST_EXPR;
692: break;
693: case ')': /* end sub-expression */
694: if (av[0][1] != '\0')
695: goto bad;
1.1.1.6 ! misho 696: if (!sub_expr)
! 697: fatalx(U_("unmatched ')' in expression"));
1.1.1.2 misho 698: debug_return_int(av - argv + 1);
1.1 misho 699: bad:
700: default:
1.1.1.6 ! misho 701: fatalx(U_("unknown search term \"%s\""), *av);
1.1 misho 702: /* NOTREACHED */
703: }
704:
705: /* Allocate new search node */
1.1.1.6 ! misho 706: sn = ecalloc(1, sizeof(*sn));
! 707: sn->type = type;
! 708: sn->or = or;
! 709: sn->negated = not;
1.1 misho 710: if (type == ST_EXPR) {
1.1.1.6 ! misho 711: STAILQ_INIT(&sn->u.expr);
! 712: av += parse_expr(&sn->u.expr, av + 1, true);
1.1 misho 713: } else {
714: if (*(++av) == NULL)
1.1.1.6 ! misho 715: fatalx(U_("%s requires an argument"), av[-1]);
1.1 misho 716: #ifdef HAVE_REGCOMP
717: if (type == ST_PATTERN) {
1.1.1.6 ! misho 718: if (regcomp(&sn->u.cmdre, *av, REG_EXTENDED|REG_NOSUB) != 0)
! 719: fatalx(U_("invalid regular expression: %s"), *av);
1.1 misho 720: } else
721: #endif
722: if (type == ST_TODATE || type == ST_FROMDATE) {
1.1.1.6 ! misho 723: sn->u.tstamp = get_date(*av);
! 724: if (sn->u.tstamp == -1)
! 725: fatalx(U_("could not parse date \"%s\""), *av);
1.1 misho 726: } else {
1.1.1.6 ! misho 727: sn->u.ptr = *av;
1.1 misho 728: }
729: }
1.1.1.6 ! misho 730: not = or = false; /* reset state */
! 731: STAILQ_INSERT_TAIL(head, sn, entries);
1.1 misho 732: }
1.1.1.6 ! misho 733: if (sub_expr)
! 734: fatalx(U_("unmatched '(' in expression"));
1.1 misho 735: if (or)
1.1.1.6 ! misho 736: fatalx(U_("illegal trailing \"or\""));
1.1 misho 737: if (not)
1.1.1.6 ! misho 738: fatalx(U_("illegal trailing \"!\""));
1.1 misho 739:
1.1.1.2 misho 740: debug_return_int(av - argv);
1.1 misho 741: }
742:
1.1.1.2 misho 743: static bool
1.1.1.6 ! misho 744: match_expr(struct search_node_list *head, struct log_info *log, bool last_match)
1.1 misho 745: {
746: struct search_node *sn;
1.1.1.6 ! misho 747: bool res, matched = last_match;
1.1.1.2 misho 748: int rc;
749: debug_decl(match_expr, SUDO_DEBUG_UTIL)
1.1 misho 750:
1.1.1.6 ! misho 751: STAILQ_FOREACH(sn, head, entries) {
1.1 misho 752: switch (sn->type) {
753: case ST_EXPR:
1.1.1.6 ! misho 754: res = match_expr(&sn->u.expr, log, matched);
1.1 misho 755: break;
756: case ST_CWD:
1.1.1.6 ! misho 757: res = strcmp(sn->u.cwd, log->cwd) == 0;
1.1 misho 758: break;
759: case ST_TTY:
1.1.1.6 ! misho 760: res = strcmp(sn->u.tty, log->tty) == 0;
1.1 misho 761: break;
762: case ST_RUNASGROUP:
1.1.1.6 ! misho 763: res = strcmp(sn->u.runas_group, log->runas_group) == 0;
1.1 misho 764: break;
765: case ST_RUNASUSER:
1.1.1.6 ! misho 766: res = strcmp(sn->u.runas_user, log->runas_user) == 0;
1.1 misho 767: break;
768: case ST_USER:
1.1.1.6 ! misho 769: res = strcmp(sn->u.user, log->user) == 0;
1.1 misho 770: break;
771: case ST_PATTERN:
772: #ifdef HAVE_REGCOMP
773: rc = regexec(&sn->u.cmdre, log->cmd, 0, NULL, 0);
774: if (rc && rc != REG_NOMATCH) {
775: char buf[BUFSIZ];
776: regerror(rc, &sn->u.cmdre, buf, sizeof(buf));
1.1.1.4 misho 777: fatalx("%s", buf);
1.1 misho 778: }
1.1.1.6 ! misho 779: res = rc == REG_NOMATCH ? 0 : 1;
1.1 misho 780: #else
1.1.1.6 ! misho 781: res = strstr(log.cmd, sn->u.pattern) != NULL;
1.1 misho 782: #endif
783: break;
784: case ST_FROMDATE:
1.1.1.6 ! misho 785: res = log->tstamp >= sn->u.tstamp;
1.1 misho 786: break;
787: case ST_TODATE:
1.1.1.6 ! misho 788: res = log->tstamp <= sn->u.tstamp;
1.1 misho 789: break;
1.1.1.6 ! misho 790: default:
! 791: fatalx(U_("unknown search type %d"), sn->type);
! 792: /* NOTREACHED */
1.1 misho 793: }
794: if (sn->negated)
1.1.1.6 ! misho 795: res = !res;
! 796: matched = sn->or ? (res || last_match) : (res && last_match);
! 797: last_match = matched;
1.1 misho 798: }
1.1.1.2 misho 799: debug_return_bool(matched);
1.1 misho 800: }
801:
1.1.1.2 misho 802: static struct log_info *
803: parse_logfile(char *logfile)
1.1 misho 804: {
805: FILE *fp;
1.1.1.2 misho 806: char *buf = NULL, *cp, *ep;
1.1.1.6 ! misho 807: const char *errstr;
1.1 misho 808: size_t bufsize = 0, cwdsize = 0, cmdsize = 0;
1.1.1.2 misho 809: struct log_info *li = NULL;
1.1.1.6 ! misho 810: debug_decl(parse_logfile, SUDO_DEBUG_UTIL)
1.1 misho 811:
812: fp = fopen(logfile, "r");
813: if (fp == NULL) {
1.1.1.6 ! misho 814: warning(U_("unable to open %s"), logfile);
1.1.1.2 misho 815: goto bad;
1.1 misho 816: }
817:
818: /*
819: * ID file has three lines:
820: * 1) a log info line
821: * 2) cwd
822: * 3) command with args
823: */
1.1.1.2 misho 824: li = ecalloc(1, sizeof(*li));
1.1 misho 825: if (getline(&buf, &bufsize, fp) == -1 ||
1.1.1.2 misho 826: getline(&li->cwd, &cwdsize, fp) == -1 ||
827: getline(&li->cmd, &cmdsize, fp) == -1) {
1.1.1.6 ! misho 828: warning(U_("%s: invalid log file"), logfile);
1.1.1.2 misho 829: goto bad;
1.1 misho 830: }
831:
1.1.1.2 misho 832: /* Strip the newline from the cwd and command. */
833: li->cwd[strcspn(li->cwd, "\n")] = '\0';
834: li->cmd[strcspn(li->cmd, "\n")] = '\0';
835:
836: /*
837: * Crack the log line (rows and cols not present in old versions).
838: * timestamp:user:runas_user:runas_group:tty:rows:cols
1.1.1.6 ! misho 839: * XXX - probably better to use strtok and switch on the state.
1.1.1.2 misho 840: */
1.1 misho 841: buf[strcspn(buf, "\n")] = '\0';
1.1.1.6 ! misho 842: cp = buf;
1.1 misho 843:
1.1.1.2 misho 844: /* timestamp */
1.1.1.6 ! misho 845: if ((ep = strchr(cp, ':')) == NULL) {
! 846: warning(U_("%s: time stamp field is missing"), logfile);
1.1.1.2 misho 847: goto bad;
1.1.1.6 ! misho 848: }
! 849: *ep = '\0';
! 850: li->tstamp = sizeof(time_t) == 4 ? strtonum(cp, INT_MIN, INT_MAX, &errstr) :
! 851: strtonum(cp, LLONG_MIN, LLONG_MAX, &errstr);
! 852: if (errstr != NULL) {
! 853: warning(U_("%s: time stamp %s: %s"), logfile, cp, errstr);
1.1.1.2 misho 854: goto bad;
1.1.1.6 ! misho 855: }
1.1 misho 856:
1.1.1.2 misho 857: /* user */
858: cp = ep + 1;
1.1.1.6 ! misho 859: if ((ep = strchr(cp, ':')) == NULL) {
! 860: warning(U_("%s: user field is missing"), logfile);
1.1.1.2 misho 861: goto bad;
1.1.1.6 ! misho 862: }
1.1.1.2 misho 863: li->user = estrndup(cp, (size_t)(ep - cp));
1.1 misho 864:
1.1.1.2 misho 865: /* runas user */
866: cp = ep + 1;
1.1.1.6 ! misho 867: if ((ep = strchr(cp, ':')) == NULL) {
! 868: warning(U_("%s: runas user field is missing"), logfile);
1.1.1.2 misho 869: goto bad;
1.1.1.6 ! misho 870: }
1.1.1.2 misho 871: li->runas_user = estrndup(cp, (size_t)(ep - cp));
1.1 misho 872:
1.1.1.2 misho 873: /* runas group */
874: cp = ep + 1;
1.1.1.6 ! misho 875: if ((ep = strchr(cp, ':')) == NULL) {
! 876: warning(U_("%s: runas group field is missing"), logfile);
1.1.1.2 misho 877: goto bad;
1.1.1.6 ! misho 878: }
1.1.1.2 misho 879: if (cp != ep)
880: li->runas_group = estrndup(cp, (size_t)(ep - cp));
1.1 misho 881:
1.1.1.2 misho 882: /* tty, followed by optional rows + columns */
883: cp = ep + 1;
884: if ((ep = strchr(cp, ':')) == NULL) {
1.1.1.6 ! misho 885: /* just the tty */
1.1.1.2 misho 886: li->tty = estrdup(cp);
887: } else {
1.1.1.6 ! misho 888: /* tty followed by rows + columns */
1.1.1.2 misho 889: li->tty = estrndup(cp, (size_t)(ep - cp));
890: cp = ep + 1;
1.1.1.6 ! misho 891: /* need to NULL out separator to use strtonum() */
1.1.1.2 misho 892: if ((ep = strchr(cp, ':')) != NULL) {
1.1.1.6 ! misho 893: *ep = '\0';
! 894: }
! 895: li->rows = strtonum(cp, 1, INT_MAX, &errstr);
! 896: if (errstr != NULL) {
! 897: sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
! 898: "%s: tty rows %s: %s", logfile, cp, errstr);
! 899: }
! 900: if (ep != NULL) {
1.1.1.2 misho 901: cp = ep + 1;
1.1.1.6 ! misho 902: li->cols = strtonum(cp, 1, INT_MAX, &errstr);
! 903: if (errstr != NULL) {
! 904: sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
! 905: "%s: tty cols %s: %s", logfile, cp, errstr);
! 906: }
1.1.1.2 misho 907: }
908: }
909: fclose(fp);
910: efree(buf);
911: debug_return_ptr(li);
912:
913: bad:
1.1.1.3 misho 914: if (fp != NULL)
915: fclose(fp);
1.1.1.2 misho 916: efree(buf);
917: free_log_info(li);
918: debug_return_ptr(NULL);
919: }
920:
921: static void
922: free_log_info(struct log_info *li)
923: {
924: if (li != NULL) {
925: efree(li->cwd);
926: efree(li->user);
927: efree(li->runas_user);
928: efree(li->runas_group);
929: efree(li->tty);
930: efree(li->cmd);
931: efree(li);
932: }
933: }
934:
935: static int
936: list_session(char *logfile, REGEX_T *re, const char *user, const char *tty)
937: {
938: char idbuf[7], *idstr, *cp;
1.1.1.6 ! misho 939: const char *timestr;
1.1.1.2 misho 940: struct log_info *li;
941: int rval = -1;
942: debug_decl(list_session, SUDO_DEBUG_UTIL)
1.1 misho 943:
1.1.1.2 misho 944: if ((li = parse_logfile(logfile)) == NULL)
945: goto done;
1.1 misho 946:
947: /* Match on search expression if there is one. */
1.1.1.6 ! misho 948: if (!STAILQ_EMPTY(&search_expr) && !match_expr(&search_expr, li, true))
1.1 misho 949: goto done;
950:
951: /* Convert from /var/log/sudo-sessions/00/00/01/log to 000001 */
952: cp = logfile + strlen(session_dir) + 1;
953: if (IS_IDLOG(cp)) {
1.1.1.2 misho 954: idbuf[0] = cp[0];
955: idbuf[1] = cp[1];
956: idbuf[2] = cp[3];
957: idbuf[3] = cp[4];
958: idbuf[4] = cp[6];
959: idbuf[5] = cp[7];
1.1 misho 960: idbuf[6] = '\0';
961: idstr = idbuf;
962: } else {
963: /* Not an id, just use the iolog_file portion. */
964: cp[strlen(cp) - 4] = '\0';
965: idstr = cp;
966: }
1.1.1.2 misho 967: /* XXX - print rows + cols? */
1.1.1.6 ! misho 968: timestr = get_timestr(li->tstamp, 1);
1.1 misho 969: printf("%s : %s : TTY=%s ; CWD=%s ; USER=%s ; ",
1.1.1.6 ! misho 970: timestr ? timestr : "invalid date",
! 971: li->user, li->tty, li->cwd, li->runas_user);
1.1.1.2 misho 972: if (li->runas_group)
973: printf("GROUP=%s ; ", li->runas_group);
974: printf("TSID=%s ; COMMAND=%s\n", idstr, li->cmd);
1.1 misho 975:
976: rval = 0;
977:
978: done:
1.1.1.2 misho 979: free_log_info(li);
980: debug_return_int(rval);
1.1 misho 981: }
982:
983: static int
1.1.1.2 misho 984: session_compare(const void *v1, const void *v2)
985: {
986: const char *s1 = *(const char **)v1;
987: const char *s2 = *(const char **)v2;
988: return strcmp(s1, s2);
989: }
990:
1.1.1.4 misho 991: /* XXX - always returns 0, calls fatal() on failure */
1.1.1.2 misho 992: static int
1.1 misho 993: find_sessions(const char *dir, REGEX_T *re, const char *user, const char *tty)
994: {
995: DIR *d;
996: struct dirent *dp;
997: struct stat sb;
1.1.1.2 misho 998: size_t sdlen, sessions_len = 0, sessions_size = 36*36;
1.1.1.6 ! misho 999: unsigned int i;
! 1000: int len;
1.1.1.2 misho 1001: char pathbuf[PATH_MAX], **sessions = NULL;
1.1.1.3 misho 1002: #ifdef HAVE_STRUCT_DIRENT_D_TYPE
1003: bool checked_type = true;
1004: #else
1005: const bool checked_type = false;
1006: #endif
1.1.1.2 misho 1007: debug_decl(find_sessions, SUDO_DEBUG_UTIL)
1.1 misho 1008:
1009: d = opendir(dir);
1010: if (d == NULL)
1.1.1.6 ! misho 1011: fatal(U_("unable to open %s"), dir);
1.1 misho 1012:
1013: /* XXX - would be faster to chdir and use relative names */
1014: sdlen = strlcpy(pathbuf, dir, sizeof(pathbuf));
1015: if (sdlen + 1 >= sizeof(pathbuf)) {
1016: errno = ENAMETOOLONG;
1.1.1.4 misho 1017: fatal("%s/", dir);
1.1 misho 1018: }
1019: pathbuf[sdlen++] = '/';
1020: pathbuf[sdlen] = '\0';
1.1.1.2 misho 1021:
1022: /* Store potential session dirs for sorting. */
1023: sessions = emalloc2(sessions_size, sizeof(char *));
1.1 misho 1024: while ((dp = readdir(d)) != NULL) {
1025: /* Skip "." and ".." */
1026: if (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' ||
1027: (dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
1028: continue;
1.1.1.2 misho 1029: #ifdef HAVE_STRUCT_DIRENT_D_TYPE
1.1.1.3 misho 1030: if (checked_type) {
1031: if (dp->d_type != DT_DIR) {
1032: /* Not all file systems support d_type. */
1033: if (dp->d_type != DT_UNKNOWN)
1034: continue;
1035: checked_type = false;
1036: }
1037: }
1.1.1.2 misho 1038: #endif
1039:
1040: /* Add name to session list. */
1041: if (sessions_len + 1 > sessions_size) {
1042: sessions_size <<= 1;
1043: sessions = erealloc3(sessions, sessions_size, sizeof(char *));
1044: }
1045: sessions[sessions_len++] = estrdup(dp->d_name);
1046: }
1047: closedir(d);
1.1 misho 1048:
1.1.1.2 misho 1049: /* Sort and list the sessions. */
1050: qsort(sessions, sessions_len, sizeof(char *), session_compare);
1051: for (i = 0; i < sessions_len; i++) {
1.1 misho 1052: len = snprintf(&pathbuf[sdlen], sizeof(pathbuf) - sdlen,
1.1.1.2 misho 1053: "%s/log", sessions[i]);
1.1.1.6 ! misho 1054: if (len <= 0 || (size_t)len >= sizeof(pathbuf) - sdlen) {
1.1 misho 1055: errno = ENAMETOOLONG;
1.1.1.4 misho 1056: fatal("%s/%s/log", dir, sessions[i]);
1.1 misho 1057: }
1.1.1.2 misho 1058: efree(sessions[i]);
1.1 misho 1059:
1060: /* Check for dir with a log file. */
1061: if (lstat(pathbuf, &sb) == 0 && S_ISREG(sb.st_mode)) {
1062: list_session(pathbuf, re, user, tty);
1063: } else {
1064: /* Strip off "/log" and recurse if a dir. */
1065: pathbuf[sdlen + len - 4] = '\0';
1.1.1.3 misho 1066: if (checked_type || (lstat(pathbuf, &sb) == 0 && S_ISDIR(sb.st_mode)))
1.1 misho 1067: find_sessions(pathbuf, re, user, tty);
1068: }
1069: }
1.1.1.2 misho 1070: efree(sessions);
1.1 misho 1071:
1.1.1.2 misho 1072: debug_return_int(0);
1.1 misho 1073: }
1074:
1.1.1.4 misho 1075: /* XXX - always returns 0, calls fatal() on failure */
1.1 misho 1076: static int
1077: list_sessions(int argc, char **argv, const char *pattern, const char *user,
1078: const char *tty)
1079: {
1080: REGEX_T rebuf, *re = NULL;
1.1.1.2 misho 1081: debug_decl(list_sessions, SUDO_DEBUG_UTIL)
1.1 misho 1082:
1083: /* Parse search expression if present */
1.1.1.6 ! misho 1084: parse_expr(&search_expr, argv, false);
1.1 misho 1085:
1086: #ifdef HAVE_REGCOMP
1087: /* optional regex */
1088: if (pattern) {
1089: re = &rebuf;
1090: if (regcomp(re, pattern, REG_EXTENDED|REG_NOSUB) != 0)
1.1.1.6 ! misho 1091: fatalx(U_("invalid regular expression: %s"), pattern);
1.1 misho 1092: }
1093: #else
1094: re = (char *) pattern;
1095: #endif /* HAVE_REGCOMP */
1096:
1.1.1.2 misho 1097: debug_return_int(find_sessions(session_dir, re, user, tty));
1.1 misho 1098: }
1099:
1100: /*
1.1.1.6 ! misho 1101: * Check input for ' ', '<', '>', return
! 1102: * pause, slow, fast, next
1.1 misho 1103: */
1104: static void
1.1.1.6 ! misho 1105: check_input(int fd, int what, void *v)
1.1 misho 1106: {
1.1.1.6 ! misho 1107: struct sudo_event *ev = v;
! 1108: struct sudo_event_base *evbase = sudo_ev_get_base(ev);
! 1109: struct timeval tv, *timeout = NULL;
! 1110: static bool paused = 0;
1.1 misho 1111: char ch;
1.1.1.2 misho 1112: debug_decl(check_input, SUDO_DEBUG_UTIL)
1.1 misho 1113:
1.1.1.6 ! misho 1114: if (ISSET(what, SUDO_EV_READ)) {
! 1115: switch (read(fd, &ch, 1)) {
! 1116: case -1:
! 1117: if (errno != EINTR && errno != EAGAIN)
! 1118: fatal(U_("unable to read %s"), "stdin");
! 1119: break;
! 1120: case 0:
! 1121: /* Ignore EOF. */
1.1 misho 1122: break;
1.1.1.6 ! misho 1123: case 1:
1.1 misho 1124: if (paused) {
1.1.1.6 ! misho 1125: /* Any key will unpause, event is finished. */
! 1126: /* XXX - pause time could be less than timeout */
! 1127: paused = false;
! 1128: debug_return; /* XXX */
1.1 misho 1129: }
1130: switch (ch) {
1131: case ' ':
1.1.1.6 ! misho 1132: paused = true;
1.1 misho 1133: break;
1134: case '<':
1.1.1.6 ! misho 1135: speed_factor /= 2;
1.1 misho 1136: break;
1137: case '>':
1.1.1.6 ! misho 1138: speed_factor *= 2;
1.1 misho 1139: break;
1.1.1.6 ! misho 1140: case '\r':
! 1141: case '\n':
! 1142: debug_return; /* XXX */
1.1 misho 1143: }
1.1.1.6 ! misho 1144: break;
! 1145: }
! 1146: if (!paused) {
! 1147: /* Determine remaining timeout, if any. */
! 1148: sudo_ev_get_timeleft(ev, &tv);
! 1149: if (!sudo_timevalisset(&tv)) {
! 1150: /* No time left, event is done. */
! 1151: debug_return;
! 1152: }
! 1153: timeout = &tv;
1.1 misho 1154: }
1.1.1.6 ! misho 1155: /* Re-enable event. */
! 1156: sudo_ev_add(evbase, ev, timeout, false);
1.1 misho 1157: }
1.1.1.2 misho 1158: debug_return;
1.1 misho 1159: }
1160:
1161: /*
1162: * Parse a timing line, which is formatted as:
1163: * index sleep_time num_bytes
1164: * Where index is IOFD_*, sleep_time is the number of seconds to sleep
1165: * before writing the data and num_bytes is the number of bytes to output.
1166: * Returns 1 on success and 0 on failure.
1167: */
1168: static int
1.1.1.6 ! misho 1169: parse_timing(const char *buf, const char *decimal, int *idx, double *seconds,
! 1170: size_t *nbytes)
1.1 misho 1171: {
1172: unsigned long ul;
1173: long l;
1174: double d, fract = 0;
1175: char *cp, *ep;
1.1.1.2 misho 1176: debug_decl(parse_timing, SUDO_DEBUG_UTIL)
1.1 misho 1177:
1178: /* Parse index */
1179: ul = strtoul(buf, &ep, 10);
1.1.1.6 ! misho 1180: if (ep == buf || !isspace((unsigned char) *ep))
! 1181: goto bad;
1.1.1.5 misho 1182: if (ul >= IOFD_TIMING) {
1183: if (ul != 6)
1184: goto bad;
1185: /* work around a bug in timing files generated by sudo 1.8.7 */
1186: timing_idx_adj = 2;
1187: }
1188: *idx = (int)ul - timing_idx_adj;
1.1 misho 1189: for (cp = ep + 1; isspace((unsigned char) *cp); cp++)
1190: continue;
1191:
1192: /*
1193: * Parse number of seconds. Sudo logs timing data in the C locale
1194: * but this may not match the current locale so we cannot use strtod().
1195: * Furthermore, sudo < 1.7.4 logged with the user's locale so we need
1196: * to be able to parse those logs too.
1197: */
1198: errno = 0;
1199: l = strtol(cp, &ep, 10);
1.1.1.6 ! misho 1200: if (ep == cp || (*ep != '.' && strncmp(ep, decimal, strlen(decimal)) != 0))
! 1201: goto bad;
! 1202: if (l < 0 || l > INT_MAX || (errno == ERANGE && l == LONG_MAX))
1.1 misho 1203: goto bad;
1204: *seconds = (double)l;
1205: cp = ep + (*ep == '.' ? 1 : strlen(decimal));
1206: d = 10.0;
1207: while (isdigit((unsigned char) *cp)) {
1208: fract += (*cp - '0') / d;
1209: d *= 10;
1210: cp++;
1211: }
1212: *seconds += fract;
1213: while (isspace((unsigned char) *cp))
1214: cp++;
1215:
1216: errno = 0;
1217: ul = strtoul(cp, &ep, 10);
1.1.1.6 ! misho 1218: if (ep == cp || *ep != '\0' || (errno == ERANGE && ul == ULONG_MAX))
1.1 misho 1219: goto bad;
1220: *nbytes = (size_t)ul;
1221:
1.1.1.2 misho 1222: debug_return_int(1);
1.1 misho 1223: bad:
1.1.1.2 misho 1224: debug_return_int(0);
1.1 misho 1225: }
1226:
1227: static void
1228: usage(int fatal)
1229: {
1230: fprintf(fatal ? stderr : stdout,
1.1.1.5 misho 1231: _("usage: %s [-h] [-d dir] [-m num] [-s num] ID\n"),
1.1 misho 1232: getprogname());
1233: fprintf(fatal ? stderr : stdout,
1.1.1.5 misho 1234: _("usage: %s [-h] [-d dir] -l [search expression]\n"),
1.1 misho 1235: getprogname());
1236: if (fatal)
1237: exit(1);
1238: }
1239:
1240: static void
1241: help(void)
1242: {
1243: (void) printf(_("%s - replay sudo session logs\n\n"), getprogname());
1244: usage(0);
1245: (void) puts(_("\nOptions:\n"
1.1.1.5 misho 1246: " -d, --directory=dir specify directory for session logs\n"
1247: " -f, --filter=filter specify which I/O type(s) to display\n"
1248: " -h, --help display help message and exit\n"
1249: " -l, --list list available session IDs, with optional expression\n"
1250: " -m, --max-wait=num max number of seconds to wait between events\n"
1251: " -s, --speed=num speed up or slow down output\n"
1252: " -V, --version display version information and exit"));
1.1 misho 1253: exit(0);
1254: }
1255:
1256: /*
1.1.1.4 misho 1257: * Cleanup hook for fatal()/fatalx()
1.1 misho 1258: */
1.1.1.4 misho 1259: static void
1260: sudoreplay_cleanup(void)
1261: {
1262: term_restore(STDIN_FILENO, 0);
1263: }
1264:
1265: /*
1.1.1.6 ! misho 1266: * Signal handler for SIGINT, SIGTERM, SIGHUP, SIGQUIT
1.1.1.4 misho 1267: * Must be installed with SA_RESETHAND enabled.
1268: */
1269: static void
1270: sudoreplay_handler(int signo)
1.1 misho 1271: {
1272: term_restore(STDIN_FILENO, 0);
1.1.1.4 misho 1273: kill(getpid(), signo);
1.1 misho 1274: }
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