2 * Logging and utility functions.
4 * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
5 * Copyright (C) 2000-2001 Martin Pool <mbp@samba.org>
6 * Copyright (C) 2003, 2004, 2005, 2006 Wayne Davison
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
24 #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
33 extern int local_server;
36 extern int msg_fd_out;
37 extern int allow_8bit_chars;
38 extern int protocol_version;
39 extern int preserve_times;
40 extern int stdout_format_has_i;
41 extern int stdout_format_has_o_or_i;
42 extern int logfile_format_has_i;
43 extern int logfile_format_has_o_or_i;
44 extern mode_t orig_umask;
45 extern char *auth_user;
46 extern char *stdout_format;
47 extern char *logfile_format;
48 extern char *logfile_name;
49 #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
50 extern iconv_t ic_chck;
52 extern char curr_dir[];
53 extern unsigned int module_dirlen;
55 static int log_initialised;
56 static int logfile_was_closed;
57 static FILE *logfile_fp;
60 int log_got_error = 0;
65 } const rerr_names[] = {
66 { RERR_SYNTAX , "syntax or usage error" },
67 { RERR_PROTOCOL , "protocol incompatibility" },
68 { RERR_FILESELECT , "errors selecting input/output files, dirs" },
69 { RERR_UNSUPPORTED, "requested action not supported" },
70 { RERR_STARTCLIENT, "error starting client-server protocol" },
71 { RERR_SOCKETIO , "error in socket IO" },
72 { RERR_FILEIO , "error in file IO" },
73 { RERR_STREAMIO , "error in rsync protocol data stream" },
74 { RERR_MESSAGEIO , "errors with program diagnostics" },
75 { RERR_IPC , "error in IPC code" },
76 { RERR_CRASHED , "sibling process crashed" },
77 { RERR_TERMINATED , "sibling process terminated abnormally" },
78 { RERR_SIGNAL1 , "received SIGUSR1" },
79 { RERR_SIGNAL , "received SIGINT, SIGTERM, or SIGHUP" },
80 { RERR_WAITCHILD , "waitpid() failed" },
81 { RERR_MALLOC , "error allocating core memory buffers" },
82 { RERR_PARTIAL , "some files could not be transferred" },
83 { RERR_VANISHED , "some files vanished before they could be transferred" },
84 { RERR_TIMEOUT , "timeout in data send/receive" },
85 { RERR_CMD_FAILED , "remote shell failed" },
86 { RERR_CMD_KILLED , "remote shell killed" },
87 { RERR_CMD_RUN , "remote command could not be run" },
88 { RERR_CMD_NOTFOUND,"remote command not found" },
89 { RERR_DEL_LIMIT , "the --max-delete limit stopped deletions" },
94 * Map from rsync error code to name, or return NULL.
96 static char const *rerr_name(int code)
99 for (i = 0; rerr_names[i].name; i++) {
100 if (rerr_names[i].code == code)
101 return rerr_names[i].name;
106 static void logit(int priority, char *buf)
108 if (logfile_was_closed)
111 fprintf(logfile_fp, "%s [%d] %s",
112 timestring(time(NULL)), (int)getpid(), buf);
115 syslog(priority, "%s", buf);
119 static void syslog_init()
121 static int been_here = 0;
122 int options = LOG_PID;
129 options |= LOG_NDELAY;
133 openlog("rsyncd", options, lp_syslog_facility(module_id));
135 openlog("rsyncd", options);
139 logit(LOG_INFO, "rsyncd started\n");
143 static void logfile_open(void)
145 mode_t old_umask = umask(022 | orig_umask);
146 logfile_fp = fopen(logfile_name, "a");
149 int fopen_errno = errno;
150 /* Rsync falls back to using syslog on failure. */
152 rsyserr(FERROR, fopen_errno,
153 "failed to open log-file %s", logfile_name);
154 rprintf(FINFO, "Ignoring \"log file\" setting.\n");
158 void log_init(int restart)
160 if (log_initialised) {
163 if (strcmp(logfile_name, lp_log_file(module_id)) != 0) {
170 } else if (*logfile_name)
171 return; /* unchanged, non-empty "log file" names */
172 else if (lp_syslog_facility(-1) != lp_syslog_facility(module_id))
175 return; /* unchanged syslog settings */
179 /* This looks pointless, but it is needed in order for the
180 * C library on some systems to fetch the timezone info
181 * before the chroot. */
182 timestring(time(NULL));
184 /* Optionally use a log file instead of syslog. (Non-daemon
185 * rsyncs will have already set logfile_name, as needed.) */
186 if (am_daemon && !logfile_name)
187 logfile_name = lp_log_file(module_id);
188 if (logfile_name && *logfile_name)
194 void logfile_close(void)
197 logfile_was_closed = 1;
203 void logfile_reopen(void)
205 if (logfile_was_closed) {
206 logfile_was_closed = 0;
211 static void filtered_fwrite(FILE *f, const char *buf, int len, int use_isprint)
213 const char *s, *end = buf + len;
214 for (s = buf; s < end; s++) {
216 && *s == '\\' && s[1] == '#'
217 && isdigit(*(uchar*)(s+2))
218 && isdigit(*(uchar*)(s+3))
219 && isdigit(*(uchar*)(s+4)))
221 && ((use_isprint && !isprint(*(uchar*)s))
222 || *(uchar*)s < ' '))) {
223 if (s != buf && fwrite(buf, s - buf, 1, f) != 1)
224 exit_cleanup(RERR_MESSAGEIO);
225 fprintf(f, "\\#%03o", *(uchar*)s);
229 if (buf != end && fwrite(buf, end - buf, 1, f) != 1)
230 exit_cleanup(RERR_MESSAGEIO);
233 /* this is the underlying (unformatted) rsync debugging function. Call
234 * it with FINFO, FERROR or FLOG. Note: recursion can happen with
235 * certain fatal conditions. */
236 void rwrite(enum logcode code, char *buf, int len)
238 int trailing_CR_or_NL;
242 exit_cleanup(RERR_MESSAGEIO);
244 if (am_server && msg_fd_out >= 0) {
245 /* Pass the message to our sibling. */
246 send_msg((enum msgcode)code, buf, len);
250 if (code == FSOCKERR) /* This gets simplified for a non-sibling. */
255 else if (am_daemon || logfile_name) {
258 int priority = code == FERROR ? LOG_WARNING : LOG_INFO;
263 if (!log_initialised)
265 strlcpy(msg, buf, MIN((int)sizeof msg, len + 1));
266 logit(priority, msg);
269 if (code == FLOG || (am_daemon && !am_server))
271 } else if (code == FLOG)
274 if (quiet && code != FERROR)
278 /* Pass the message to the non-server side. */
279 if (send_msg((enum msgcode)code, buf, len))
282 /* TODO: can we send the error to the user somehow? */
293 f = am_server ? stderr : stdout;
296 exit_cleanup(RERR_MESSAGEIO);
299 trailing_CR_or_NL = len && (buf[len-1] == '\n' || buf[len-1] == '\r')
302 #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
303 if (ic_chck != (iconv_t)-1) {
305 char *in_buf = buf, *out_buf = convbuf;
306 size_t in_cnt = len, out_cnt = sizeof convbuf - 1;
308 iconv(ic_chck, NULL, 0, NULL, 0);
309 while (iconv(ic_chck, &in_buf,&in_cnt,
310 &out_buf,&out_cnt) == (size_t)-1) {
311 if (out_buf != convbuf) {
312 filtered_fwrite(f, convbuf, out_buf - convbuf, 0);
314 out_cnt = sizeof convbuf - 1;
318 fprintf(f, "\\#%03o", *(uchar*)in_buf++);
321 if (out_buf != convbuf)
322 filtered_fwrite(f, convbuf, out_buf - convbuf, 0);
325 filtered_fwrite(f, buf, len, !allow_8bit_chars);
327 if (trailing_CR_or_NL) {
328 fputc(trailing_CR_or_NL, f);
333 /* This is the rsync debugging function. Call it with FINFO, FERROR or
335 void rprintf(enum logcode code, const char *format, ...)
338 char buf[BIGPATHBUFLEN];
341 va_start(ap, format);
342 len = vsnprintf(buf, sizeof buf, format, ap);
345 /* Deal with buffer overruns. Instead of panicking, just
346 * truncate the resulting string. (Note that configure ensures
347 * that we have a vsnprintf() that doesn't ever return -1.) */
348 if (len > sizeof buf - 1) {
349 static const char ellipsis[] = "[...]";
351 /* Reset length, and zero-terminate the end of our buffer */
352 len = sizeof buf - 1;
355 /* Copy the ellipsis to the end of the string, but give
356 * us one extra character:
358 * v--- null byte at buf[sizeof buf - 1]
360 * -> abcd[...]00 <-- now two null bytes at end
362 * If the input format string has a trailing newline,
363 * we copy it into that extra null; if it doesn't, well,
364 * all we lose is one byte. */
365 memcpy(buf+len-sizeof ellipsis, ellipsis, sizeof ellipsis);
366 if (format[strlen(format)-1] == '\n') {
371 rwrite(code, buf, len);
374 /* This is like rprintf, but it also tries to print some
375 * representation of the error code. Normally errcode = errno.
377 * Unlike rprintf, this always adds a newline and there should not be
378 * one in the format string.
380 * Note that since strerror might involve dynamically loading a
381 * message catalog we need to call it once before chroot-ing. */
382 void rsyserr(enum logcode code, int errcode, const char *format, ...)
385 char buf[BIGPATHBUFLEN];
388 strlcpy(buf, RSYNC_NAME ": ", sizeof buf);
389 len = (sizeof RSYNC_NAME ": ") - 1;
391 va_start(ap, format);
392 len += vsnprintf(buf + len, sizeof buf - len, format, ap);
395 if (len < sizeof buf) {
396 len += snprintf(buf + len, sizeof buf - len,
397 ": %s (%d)\n", strerror(errcode), errcode);
399 if (len >= sizeof buf)
400 exit_cleanup(RERR_MESSAGEIO);
402 rwrite(code, buf, len);
405 void rflush(enum logcode code)
409 if (am_daemon || code == FLOG)
412 if (code == FERROR || am_server)
420 /* A generic logging routine for send/recv, with parameter substitiution. */
421 static void log_formatted(enum logcode code, char *format, char *op,
422 struct file_struct *file, struct stats *initial_stats,
423 int iflags, char *hlink)
425 char buf[MAXPATHLEN+1024], buf2[MAXPATHLEN], fmt[32];
432 /* We expand % codes one by one in place in buf. We don't
433 * copy in the terminating null of the inserted strings, but
434 * rather keep going until we reach the null of the format. */
435 total = strlcpy(buf, format, sizeof buf);
436 if (total > MAXPATHLEN) {
437 rprintf(FERROR, "log-format string is WAY too long!\n");
438 exit_cleanup(RERR_MESSAGEIO);
443 for (p = buf; (p = strchr(p, '%')) != NULL; ) {
448 while (isdigit(*(uchar*)p) && n - fmt < (int)(sizeof fmt) - 8)
465 strlcat(fmt, ".0f", sizeof fmt);
466 snprintf(buf2, sizeof buf2, fmt,
467 (double)file->length);
471 strlcat(fmt, "ld", sizeof fmt);
472 snprintf(buf2, sizeof buf2, fmt,
477 if (file->gid == GID_NONE)
480 strlcat(fmt, "ld", sizeof fmt);
481 snprintf(buf2, sizeof buf2, fmt,
487 strlcat(fmt, "ld", sizeof fmt);
488 snprintf(buf2, sizeof buf2, fmt,
493 n = timestring(file->modtime);
496 while ((cp = strchr(cp, ' ')) != NULL)
501 n = buf2 + MAXPATHLEN - PERMSTRING_SIZE;
502 permstring(n - 1, file->mode); /* skip the type char */
508 n = f_name(file, NULL);
509 if (am_sender && file->dir.root) {
510 pathjoin(buf2, sizeof buf2,
512 clean_fname(buf2, 0);
514 strlcpy(n, buf2, MAXPATHLEN);
517 } else if (*n != '/') {
518 pathjoin(buf2, sizeof buf2,
519 curr_dir + module_dirlen, n);
520 clean_fname(buf2, 0);
522 strlcpy(n, buf2, MAXPATHLEN);
531 n = f_name(file, NULL);
532 if (S_ISDIR(file->mode))
533 strlcat(n, "/", MAXPATHLEN);
536 if (hlink && *hlink) {
538 strlcpy(buf2, " => ", sizeof buf2);
539 } else if (S_ISLNK(file->mode) && file->u.link) {
541 strlcpy(buf2, " -> ", sizeof buf2);
546 strlcpy(buf2, " ", sizeof buf2);
548 strlcat(fmt, "s", sizeof fmt);
549 snprintf(buf2 + 4, sizeof buf2 - 4, fmt, n);
553 n = lp_name(module_id);
556 n = timestring(time(NULL));
559 n = lp_path(module_id);
566 b = stats.total_written -
567 initial_stats->total_written;
569 b = stats.total_read -
570 initial_stats->total_read;
572 strlcat(fmt, ".0f", sizeof fmt);
573 snprintf(buf2, sizeof buf2, fmt, (double)b);
578 b = stats.total_written -
579 initial_stats->total_written;
581 b = stats.total_read -
582 initial_stats->total_read;
584 strlcat(fmt, ".0f", sizeof fmt);
585 snprintf(buf2, sizeof buf2, fmt, (double)b);
589 if (iflags & ITEM_DELETED) {
593 n = buf2 + MAXPATHLEN - 32;
594 n[0] = iflags & ITEM_LOCAL_CHANGE
595 ? iflags & ITEM_XNAME_FOLLOWS ? 'h' : 'c'
596 : !(iflags & ITEM_TRANSFER) ? '.'
597 : !local_server && *op == 's' ? '<' : '>';
598 n[1] = S_ISDIR(file->mode) ? 'd'
599 : IS_SPECIAL(file->mode) ? 'S'
600 : IS_DEVICE(file->mode) ? 'D'
601 : S_ISLNK(file->mode) ? 'L' : 'f';
602 n[2] = !(iflags & ITEM_REPORT_CHECKSUM) ? '.' : 'c';
603 n[3] = !(iflags & ITEM_REPORT_SIZE) ? '.' : 's';
604 n[4] = !(iflags & ITEM_REPORT_TIME) ? '.'
605 : !preserve_times || S_ISLNK(file->mode) ? 'T' : 't';
606 n[5] = !(iflags & ITEM_REPORT_PERMS) ? '.' : 'p';
607 n[6] = !(iflags & ITEM_REPORT_OWNER) ? '.' : 'o';
608 n[7] = !(iflags & ITEM_REPORT_GROUP) ? '.' : 'g';
612 if (iflags & (ITEM_IS_NEW|ITEM_MISSING_DATA)) {
613 char ch = iflags & ITEM_IS_NEW ? '+' : '?';
615 for (i = 2; n[i]; i++)
617 } else if (n[0] == '.' || n[0] == 'h'
618 || (n[0] == 'c' && n[1] == 'f')) {
620 for (i = 2; n[i]; i++) {
625 for (i = 2; n[i]; i++)
632 /* "n" is the string to be inserted in place of this % code. */
635 if (n != buf2 && fmt[1]) {
636 strlcat(fmt, "s", sizeof fmt);
637 snprintf(buf2, sizeof buf2, fmt, n);
642 /* Subtract the length of the escape from the string's size. */
645 if (len + total >= (size_t)sizeof buf) {
647 "buffer overflow expanding %%%c -- exiting\n",
649 exit_cleanup(RERR_MESSAGEIO);
652 /* Shuffle the rest of the string along to make space for n */
653 if (len != (size_t)(p - s + 1))
654 memmove(s + len, p + 1, total - (s - buf) + 1);
657 /* Insert the contents of string "n", but NOT its null. */
661 /* Skip over inserted string; continue looking */
665 rwrite(code, buf, total);
668 /* Return 1 if the format escape is in the log-format string (e.g. look for
669 * the 'b' in the "%9b" format escape). */
670 int log_format_has(const char *format, char esc)
677 for (p = format; (p = strchr(p, '%')) != NULL; ) {
680 while (isdigit(*(uchar*)p))
690 /* Log the transfer of a file. If the code is FCLIENT, the output just goes
691 * to stdout. If it is FLOG, it just goes to the log file. Otherwise we
693 void log_item(enum logcode code, struct file_struct *file,
694 struct stats *initial_stats, int iflags, char *hlink)
696 char *s_or_r = am_sender ? "send" : "recv";
698 if (code != FLOG && stdout_format && !am_server) {
699 log_formatted(FCLIENT, stdout_format, s_or_r,
700 file, initial_stats, iflags, hlink);
702 if (code != FCLIENT && logfile_format && *logfile_format) {
703 log_formatted(FLOG, logfile_format, s_or_r,
704 file, initial_stats, iflags, hlink);
708 void maybe_log_item(struct file_struct *file, int iflags, int itemizing,
711 int significant_flags = iflags & SIGNIFICANT_ITEM_FLAGS;
712 int see_item = itemizing && (significant_flags || *buf
713 || stdout_format_has_i > 1 || (verbose > 1 && stdout_format_has_i));
714 int local_change = iflags & ITEM_LOCAL_CHANGE && significant_flags;
716 if (logfile_name && !dry_run && see_item
717 && (significant_flags || logfile_format_has_i))
718 log_item(FLOG, file, &stats, iflags, buf);
719 } else if (see_item || local_change || *buf
720 || (S_ISDIR(file->mode) && significant_flags)) {
721 enum logcode code = significant_flags || logfile_format_has_i ? FINFO : FCLIENT;
722 log_item(code, file, &stats, iflags, buf);
726 void log_delete(char *fname, int mode)
728 static struct file_struct file;
729 int len = strlen(fname);
733 file.basename = fname;
735 if (!verbose && !stdout_format)
737 else if (am_server && protocol_version >= 29 && len < MAXPATHLEN) {
739 len++; /* directories include trailing null */
740 send_msg(MSG_DELETED, fname, len);
742 fmt = stdout_format_has_o_or_i ? stdout_format : "deleting %n";
743 log_formatted(FCLIENT, fmt, "del.", &file, &stats,
747 if (!logfile_name || dry_run || !logfile_format)
750 fmt = logfile_format_has_o_or_i ? logfile_format : "deleting %n";
751 log_formatted(FLOG, fmt, "del.", &file, &stats, ITEM_DELETED, NULL);
755 * Called when the transfer is interrupted for some reason.
757 * Code is one of the RERR_* codes from errcode.h, or terminating
760 void log_exit(int code, const char *file, int line)
763 rprintf(FLOG,"sent %.0f bytes received %.0f bytes total size %.0f\n",
764 (double)stats.total_written,
765 (double)stats.total_read,
766 (double)stats.total_size);
770 name = rerr_name(code);
772 name = "unexplained error";
774 /* VANISHED is not an error, only a warning */
775 if (code == RERR_VANISHED) {
776 rprintf(FINFO, "rsync warning: %s (code %d) at %s(%d) [%s=%s]\n",
777 name, code, file, line, who_am_i(), RSYNC_VERSION);
779 rprintf(FERROR, "rsync error: %s (code %d) at %s(%d) [%s=%s]\n",
780 name, code, file, line, who_am_i(), RSYNC_VERSION);