1 /* -*- c-file-style: "linux"; -*-
3 Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
4 Copyright (C) 2000-2001 by Martin Pool <mbp@samba.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 Logging and utility functions.
25 Mapping to human-readable messages added by Martin Pool
26 <mbp@samba.org>, Oct 2000.
30 extern int itemize_changes;
36 extern int msg_fd_out;
37 extern int protocol_version;
38 extern int preserve_times;
39 extern char *auth_user;
40 extern char *log_format;
42 static int log_initialised;
43 static char *logfname;
47 int log_got_error = 0;
52 } const rerr_names[] = {
53 { RERR_SYNTAX , "syntax or usage error" },
54 { RERR_PROTOCOL , "protocol incompatibility" },
55 { RERR_FILESELECT , "errors selecting input/output files, dirs" },
56 { RERR_UNSUPPORTED, "requested action not supported" },
57 { RERR_STARTCLIENT, "error starting client-server protocol" },
58 { RERR_SOCKETIO , "error in socket IO" },
59 { RERR_FILEIO , "error in file IO" },
60 { RERR_STREAMIO , "error in rsync protocol data stream" },
61 { RERR_MESSAGEIO , "errors with program diagnostics" },
62 { RERR_IPC , "error in IPC code" },
63 { RERR_SIGNAL , "received SIGUSR1 or SIGINT" },
64 { RERR_WAITCHILD , "some error returned by waitpid()" },
65 { RERR_MALLOC , "error allocating core memory buffers" },
66 { RERR_PARTIAL , "some files could not be transferred" },
67 { RERR_VANISHED , "some files vanished before they could be transferred" },
68 { RERR_TIMEOUT , "timeout in data send/receive" },
69 { RERR_CMD_FAILED , "remote shell failed" },
70 { RERR_CMD_KILLED , "remote shell killed" },
71 { RERR_CMD_RUN, "remote command could not be run" },
72 { RERR_CMD_NOTFOUND, "remote command not found" },
79 * Map from rsync error code to name, or return NULL.
81 static char const *rerr_name(int code)
84 for (i = 0; rerr_names[i].name; i++) {
85 if (rerr_names[i].code == code)
86 return rerr_names[i].name;
93 if (logfname && !logfile) {
94 extern int orig_umask;
95 int old_umask = umask(022 | orig_umask);
96 logfile = fopen(logfname, "a");
99 am_daemon = 0; /* avoid trying to log again */
100 rsyserr(FERROR, errno, "fopen() of log-file failed");
101 exit_cleanup(RERR_FILESELECT);
114 static void logit(int priority, char *buf)
119 fprintf(logfile,"%s [%d] %s",
120 timestring(time(NULL)), (int)getpid(), buf);
123 syslog(priority, "%s", buf);
129 int options = LOG_PID;
136 /* this looks pointless, but it is needed in order for the
137 * C library on some systems to fetch the timezone info
138 * before the chroot */
142 /* optionally use a log file instead of syslog */
143 logfname = lp_log_file();
153 options |= LOG_NDELAY;
157 openlog("rsyncd", options, lp_syslog_facility());
159 openlog("rsyncd", options);
163 logit(LOG_INFO,"rsyncd started\n");
167 /* this is the underlying (unformatted) rsync debugging function. Call
168 * it with FINFO, FERROR or FLOG */
169 void rwrite(enum logcode code, char *buf, int len)
172 /* recursion can happen with certain fatal conditions */
174 if (quiet && code == FINFO)
178 exit_cleanup(RERR_MESSAGEIO);
182 if (am_server && msg_fd_out >= 0) {
183 /* Pass the message to our sibling. */
184 send_msg((enum msgcode)code, buf, len);
191 int priority = code == FERROR ? LOG_WARNING : LOG_INFO;
196 if (!log_initialised)
198 strlcpy(msg, buf, MIN((int)sizeof msg, len + 1));
199 logit(priority, msg);
202 if (code == FLOG || !am_server)
204 } else if (code == FLOG)
208 /* Pass the message to the non-server side. */
209 if (io_multiplex_write((enum msgcode)code, buf, len))
212 /* TODO: can we send the error to the user somehow? */
217 if (code == FERROR) {
223 f = am_server ? stderr : stdout;
226 exit_cleanup(RERR_MESSAGEIO);
228 if (fwrite(buf, len, 1, f) != 1)
229 exit_cleanup(RERR_MESSAGEIO);
231 if (buf[len-1] == '\r' || buf[len-1] == '\n')
236 /* This is the rsync debugging function. Call it with FINFO, FERROR or
238 void rprintf(enum logcode code, const char *format, ...)
241 char buf[MAXPATHLEN+512];
244 va_start(ap, format);
245 len = vsnprintf(buf, sizeof buf, format, ap);
248 /* Deal with buffer overruns. Instead of panicking, just
249 * truncate the resulting string. (Note that configure ensures
250 * that we have a vsnprintf() that doesn't ever return -1.) */
251 if (len > sizeof buf - 1) {
252 const char ellipsis[] = "[...]";
254 /* Reset length, and zero-terminate the end of our buffer */
255 len = sizeof buf - 1;
258 /* Copy the ellipsis to the end of the string, but give
259 * us one extra character:
261 * v--- null byte at buf[sizeof buf - 1]
263 * -> abcd[...]00 <-- now two null bytes at end
265 * If the input format string has a trailing newline,
266 * we copy it into that extra null; if it doesn't, well,
267 * all we lose is one byte. */
268 strncpy(buf+len-sizeof ellipsis, ellipsis, sizeof ellipsis);
269 if (format[strlen(format)-1] == '\n') {
274 rwrite(code, buf, len);
278 /* This is like rprintf, but it also tries to print some
279 * representation of the error code. Normally errcode = errno.
281 * Unlike rprintf, this always adds a newline and there should not be
282 * one in the format string.
284 * Note that since strerror might involve dynamically loading a
285 * message catalog we need to call it once before chroot-ing. */
286 void rsyserr(enum logcode code, int errcode, const char *format, ...)
289 char buf[MAXPATHLEN+512];
292 strcpy(buf, RSYNC_NAME ": ");
293 len = (sizeof RSYNC_NAME ": ") - 1;
295 va_start(ap, format);
296 len += vsnprintf(buf + len, sizeof buf - len, format, ap);
299 if (len < sizeof buf) {
300 len += snprintf(buf + len, sizeof buf - len,
301 ": %s (%d)\n", strerror(errcode), errcode);
303 if (len >= sizeof buf)
304 exit_cleanup(RERR_MESSAGEIO);
306 rwrite(code, buf, len);
311 void rflush(enum logcode code)
323 if (code == FERROR) {
334 if (!f) exit_cleanup(RERR_MESSAGEIO);
340 /* a generic logging routine for send/recv, with parameter
342 static void log_formatted(enum logcode code,
343 char *format, char *op, struct file_struct *file,
344 struct stats *initial_stats, int iflags)
346 char buf[MAXPATHLEN+1024];
347 char buf2[MAXPATHLEN];
352 /* We expand % codes one by one in place in buf. We don't
353 * copy in the terminating nul of the inserted strings, but
354 * rather keep going until we reach the nul of the format. */
355 total = strlcpy(buf, format, sizeof buf);
357 for (p = buf; (p = strchr(p, '%')) != NULL && p[1]; ) {
361 case 'h': if (am_daemon) n = client_name(0); break;
362 case 'a': if (am_daemon) n = client_addr(0); break;
364 snprintf(buf2, sizeof buf2, "%.0f",
365 (double)file->length);
369 snprintf(buf2, sizeof buf2, "%d",
373 case 'o': n = op; break;
375 pathjoin(buf2, sizeof buf2,
376 am_sender && file->dir.root ? file->dir.root : "",
377 safe_fname(f_name(file)));
378 clean_fname(buf2, 0);
383 n = (char*)safe_fname(f_name(file));
384 if (S_ISDIR(file->mode)) {
385 /* The buffer from safe_fname() has more
386 * room than MAXPATHLEN, so this is safe. */
391 if (S_ISLNK(file->mode) && file->u.link) {
392 snprintf(buf2, sizeof buf2, " -> %s",
393 safe_fname(file->u.link));
398 case 'm': n = lp_name(module_id); break;
399 case 't': n = timestring(time(NULL)); break;
400 case 'P': n = lp_path(module_id); break;
401 case 'u': n = auth_user; break;
404 b = stats.total_written -
405 initial_stats->total_written;
407 b = stats.total_read -
408 initial_stats->total_read;
410 snprintf(buf2, sizeof buf2, "%.0f", (double)b);
415 b = stats.total_written -
416 initial_stats->total_written;
418 b = stats.total_read -
419 initial_stats->total_read;
421 snprintf(buf2, sizeof buf2, "%.0f", (double)b);
425 if (iflags & ITEM_DELETED) {
430 n[0] = !(iflags & ITEM_UPDATING) ? '.'
431 : *op == 's' ? '>' : '<';
432 n[1] = S_ISDIR(file->mode) ? 'd'
433 : IS_DEVICE(file->mode) ? 'D'
434 : S_ISLNK(file->mode) ? 'L' : 'f';
435 n[2] = !(iflags & ITEM_REPORT_CHECKSUM) ? '.' : 'c';
436 n[3] = !(iflags & ITEM_REPORT_SIZE) ? '.' : 's';
437 n[4] = !(iflags & ITEM_REPORT_TIME) ? '.'
438 : !preserve_times || IS_DEVICE(file->mode)
439 || S_ISLNK(file->mode) ? 'T' : 't';
440 n[5] = !(iflags & ITEM_REPORT_PERMS) ? '.' : 'p';
441 n[6] = !(iflags & ITEM_REPORT_OWNER) ? '.' : 'o';
442 n[7] = !(iflags & ITEM_REPORT_GROUP) ? '.' : 'g';
445 if (iflags & (ITEM_IS_NEW|ITEM_MISSING_DATA)) {
446 char ch = iflags & ITEM_IS_NEW ? '+' : '?';
448 for (i = 2; n[i]; i++)
450 } else if (!(iflags & ITEM_UPDATING)) {
452 for (i = 2; n[i]; i++) {
457 for (i = 2; n[i]; i++)
465 /* n is the string to be inserted in place of this %
466 * code; len is its length not including the trailing
475 if (len + total - 2 >= sizeof buf) {
477 "buffer overflow expanding %%%c -- exiting\n",
479 exit_cleanup(RERR_MESSAGEIO);
482 /* Shuffle the rest of the string along to make space for n */
484 memmove(p + len, p + 2, total - (p + 2 - buf) + 1);
487 /* Insert the contents of string "n", but NOT its nul. */
491 /* Skip over inserted string; continue looking */
495 rprintf(code, "%s\n", buf);
498 /* log the outgoing transfer of a file */
499 void log_send(struct file_struct *file, struct stats *initial_stats, int iflags)
501 if (lp_transfer_logging(module_id)) {
502 log_formatted(FLOG, lp_log_format(module_id), "send",
503 file, initial_stats, iflags);
504 } else if (log_format && !am_server) {
505 log_formatted(FINFO, log_format, "send",
506 file, initial_stats, iflags);
510 /* log the incoming transfer of a file */
511 void log_recv(struct file_struct *file, struct stats *initial_stats, int iflags)
513 if (lp_transfer_logging(module_id)) {
514 log_formatted(FLOG, lp_log_format(module_id), "recv",
515 file, initial_stats, iflags);
516 } else if (log_format && !am_server) {
517 log_formatted(FINFO, log_format, "recv",
518 file, initial_stats, iflags);
523 void log_delete(char *fname, int mode)
525 static struct file_struct file;
526 int len = strlen(fname);
531 file.basename = fname;
533 if (am_server && protocol_version >= 29 && len < MAXPATHLEN) {
535 len++; /* directories include trailing null */
536 send_msg(MSG_DELETED, fname, len);
539 fmt = lp_log_format(module_id);
542 fmt = log_format && itemize_changes ? log_format : "%i %n";
546 log_formatted(code, fmt, "del.", &file, &stats, ITEM_DELETED);
551 * Called when the transfer is interrupted for some reason.
553 * Code is one of the RERR_* codes from errcode.h, or terminating
556 void log_exit(int code, const char *file, int line)
559 rprintf(FLOG,"wrote %.0f bytes read %.0f bytes total size %.0f\n",
560 (double)stats.total_written,
561 (double)stats.total_read,
562 (double)stats.total_size);
566 name = rerr_name(code);
568 name = "unexplained error";
570 /* VANISHED is not an error, only a warning */
571 if (code == RERR_VANISHED) {
572 rprintf(FINFO, "rsync warning: %s (code %d) at %s(%d)\n",
573 name, code, file, line);
575 rprintf(FERROR, "rsync error: %s (code %d) at %s(%d)\n",
576 name, code, file, line);