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a039749b MP |
1 | /* -*- c-file-style: "linux"; -*- |
2 | ||
0c5a792a | 3 | Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org> |
18c71e96 | 4 | Copyright (C) 2000-2001 by Martin Pool <mbp@samba.org> |
0b76cd63 AT |
5 | |
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. | |
10 | ||
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. | |
15 | ||
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. | |
19 | */ | |
20 | ||
21 | /* | |
3e3dcd62 | 22 | Logging and utility functions. |
0c5a792a | 23 | tridge, May 1998 |
0b76cd63 | 24 | |
3e3dcd62 MP |
25 | Mapping to human-readable messages added by Martin Pool |
26 | <mbp@samba.org>, Oct 2000. | |
0b76cd63 AT |
27 | */ |
28 | #include "rsync.h" | |
29 | ||
45a83540 | 30 | static char *logfname; |
4f6325c3 | 31 | static FILE *logfile; |
554e0a8d | 32 | static int log_error_fd = -1; |
e0414f42 | 33 | |
ff81e809 | 34 | int log_got_error=0; |
af642a61 MP |
35 | |
36 | struct { | |
37 | int code; | |
38 | char const *name; | |
39 | } const rerr_names[] = { | |
40 | { RERR_SYNTAX , "syntax or usage error" }, | |
41 | { RERR_PROTOCOL , "protocol incompatibility" }, | |
42 | { RERR_FILESELECT , "errors selecting input/output files, dirs" }, | |
43 | { RERR_UNSUPPORTED , "requested action not supported" }, | |
44 | { RERR_SOCKETIO , "error in socket IO" }, | |
45 | { RERR_FILEIO , "error in file IO" }, | |
46 | { RERR_STREAMIO , "error in rsync protocol data stream" }, | |
47 | { RERR_MESSAGEIO , "errors with program diagnostics" }, | |
48 | { RERR_IPC , "error in IPC code" }, | |
3e3dcd62 | 49 | { RERR_SIGNAL , "received SIGUSR1 or SIGINT" }, |
af642a61 MP |
50 | { RERR_WAITCHILD , "some error returned by waitpid()" }, |
51 | { RERR_MALLOC , "error allocating core memory buffers" }, | |
52 | { RERR_TIMEOUT , "timeout in data send/receive" }, | |
53 | { 0, NULL } | |
54 | }; | |
55 | ||
56 | ||
57 | ||
58 | /* | |
59 | * Map from rsync error code to name, or return NULL. | |
60 | */ | |
61 | static char const *rerr_name(int code) | |
62 | { | |
63 | int i; | |
64 | for (i = 0; rerr_names[i].name; i++) { | |
65 | if (rerr_names[i].code == code) | |
66 | return rerr_names[i].name; | |
67 | } | |
68 | return NULL; | |
69 | } | |
70 | ||
90ba34e2 AT |
71 | struct err_list { |
72 | struct err_list *next; | |
73 | char *buf; | |
74 | int len; | |
75 | int written; /* how many bytes we have written so far */ | |
76 | }; | |
77 | ||
78 | static struct err_list *err_list_head; | |
79 | static struct err_list *err_list_tail; | |
80 | ||
81 | /* add an error message to the pending error list */ | |
82 | static void err_list_add(int code, char *buf, int len) | |
83 | { | |
84 | struct err_list *el; | |
85 | el = (struct err_list *)malloc(sizeof(*el)); | |
86 | if (!el) exit_cleanup(RERR_MALLOC); | |
87 | el->next = NULL; | |
88 | el->buf = malloc(len+4); | |
89 | if (!el->buf) exit_cleanup(RERR_MALLOC); | |
90 | memcpy(el->buf+4, buf, len); | |
91 | SIVAL(el->buf, 0, ((code+MPLEX_BASE)<<24) | len); | |
92 | el->len = len+4; | |
93 | el->written = 0; | |
94 | if (err_list_tail) { | |
95 | err_list_tail->next = el; | |
96 | } else { | |
97 | err_list_head = el; | |
98 | } | |
99 | err_list_tail = el; | |
100 | } | |
101 | ||
102 | ||
103 | /* try to push errors off the error list onto the wire */ | |
104 | void err_list_push(void) | |
105 | { | |
106 | if (log_error_fd == -1) return; | |
107 | ||
108 | while (err_list_head) { | |
109 | struct err_list *el = err_list_head; | |
110 | int n = write(log_error_fd, el->buf+el->written, el->len - el->written); | |
ff81e809 AT |
111 | /* don't check for an error if the best way of handling the error is |
112 | to ignore it */ | |
90ba34e2 AT |
113 | if (n == -1) break; |
114 | if (n > 0) { | |
115 | el->written += n; | |
116 | } | |
117 | if (el->written == el->len) { | |
118 | free(el->buf); | |
119 | err_list_head = el->next; | |
120 | if (!err_list_head) err_list_tail = NULL; | |
121 | free(el); | |
122 | } | |
123 | } | |
124 | } | |
125 | ||
af642a61 | 126 | |
4f6325c3 AT |
127 | static void logit(int priority, char *buf) |
128 | { | |
45a83540 | 129 | if (logfname) { |
15b84e14 DD |
130 | if (!logfile) |
131 | log_open(); | |
67ea0d48 | 132 | fprintf(logfile,"%s [%d] %s", |
f7632fc6 | 133 | timestring(time(NULL)), (int)getpid(), buf); |
4f6325c3 AT |
134 | fflush(logfile); |
135 | } else { | |
136 | syslog(priority, "%s", buf); | |
137 | } | |
138 | } | |
e42c9458 | 139 | |
45a83540 | 140 | void log_init(void) |
1a016bfd AT |
141 | { |
142 | static int initialised; | |
143 | int options = LOG_PID; | |
bcf5b133 | 144 | time_t t; |
1a016bfd AT |
145 | |
146 | if (initialised) return; | |
147 | initialised = 1; | |
148 | ||
958f3735 AT |
149 | /* this looks pointless, but it is needed in order for the |
150 | C library on some systems to fetch the timezone info | |
151 | before the chroot */ | |
152 | t = time(NULL); | |
153 | localtime(&t); | |
154 | ||
155 | /* optionally use a log file instead of syslog */ | |
45a83540 DD |
156 | logfname = lp_log_file(); |
157 | if (logfname) { | |
15b84e14 DD |
158 | if (*logfname) { |
159 | log_open(); | |
45a83540 | 160 | return; |
15b84e14 | 161 | } |
45a83540 | 162 | logfname = NULL; |
4f6325c3 AT |
163 | } |
164 | ||
1a016bfd AT |
165 | #ifdef LOG_NDELAY |
166 | options |= LOG_NDELAY; | |
167 | #endif | |
168 | ||
169 | #ifdef LOG_DAEMON | |
170 | openlog("rsyncd", options, lp_syslog_facility()); | |
171 | #else | |
172 | openlog("rsyncd", options); | |
173 | #endif | |
174 | ||
175 | #ifndef LOG_NDELAY | |
4f6325c3 | 176 | logit(LOG_INFO,"rsyncd started\n"); |
1a016bfd AT |
177 | #endif |
178 | } | |
1a016bfd | 179 | |
15b84e14 DD |
180 | void log_open() |
181 | { | |
182 | if (logfname && !logfile) { | |
183 | extern int orig_umask; | |
184 | int old_umask = umask(022 | orig_umask); | |
185 | logfile = fopen(logfname, "a"); | |
186 | umask(old_umask); | |
187 | } | |
188 | } | |
189 | ||
190 | void log_close() | |
45a83540 DD |
191 | { |
192 | if (logfile) { | |
193 | fclose(logfile); | |
194 | logfile = NULL; | |
195 | } | |
196 | } | |
197 | ||
554e0a8d AT |
198 | /* setup the error file descriptor - used when we are a server |
199 | that is receiving files */ | |
200 | void set_error_fd(int fd) | |
201 | { | |
202 | log_error_fd = fd; | |
90ba34e2 | 203 | set_nonblocking(log_error_fd); |
554e0a8d AT |
204 | } |
205 | ||
206 | /* this is the underlying (unformatted) rsync debugging function. Call | |
207 | it with FINFO, FERROR or FLOG */ | |
ff41a59f | 208 | void rwrite(enum logcode code, char *buf, int len) |
0b76cd63 | 209 | { |
0b76cd63 AT |
210 | FILE *f=NULL; |
211 | extern int am_daemon; | |
4a814638 | 212 | extern int am_server; |
b86f0cef | 213 | extern int quiet; |
8d9dc9f9 | 214 | /* recursion can happen with certain fatal conditions */ |
8d9dc9f9 | 215 | |
6d7b6081 | 216 | if (quiet && code == FINFO) return; |
b86f0cef | 217 | |
65417579 | 218 | if (len < 0) exit_cleanup(RERR_MESSAGEIO); |
0b76cd63 | 219 | |
ff8b29b8 AT |
220 | buf[len] = 0; |
221 | ||
ff41a59f | 222 | if (code == FLOG) { |
11a5a3c7 | 223 | if (am_daemon) logit(LOG_INFO, buf); |
11a5a3c7 AT |
224 | return; |
225 | } | |
226 | ||
90ba34e2 AT |
227 | /* first try to pass it off to our sibling */ |
228 | if (am_server && log_error_fd != -1) { | |
229 | err_list_add(code, buf, len); | |
230 | err_list_push(); | |
6d7b6081 AT |
231 | return; |
232 | } | |
233 | ||
18c71e96 | 234 | /* if that fails, try to pass it to the other end */ |
4a814638 | 235 | if (am_server && io_multiplex_write(code, buf, len)) { |
6d7b6081 AT |
236 | return; |
237 | } | |
ff41a59f | 238 | |
ff8b29b8 | 239 | if (am_daemon) { |
b24203b3 | 240 | static int depth; |
ff8b29b8 | 241 | int priority = LOG_INFO; |
ff41a59f | 242 | if (code == FERROR) priority = LOG_WARNING; |
45ccc5c0 | 243 | |
b24203b3 AT |
244 | if (depth) return; |
245 | ||
f27b53f5 AT |
246 | depth++; |
247 | ||
45a83540 | 248 | log_init(); |
6d7b6081 | 249 | logit(priority, buf); |
8d9dc9f9 AT |
250 | |
251 | depth--; | |
ff8b29b8 | 252 | return; |
0b76cd63 AT |
253 | } |
254 | ||
ff41a59f | 255 | if (code == FERROR) { |
ff81e809 | 256 | log_got_error = 1; |
ff8b29b8 AT |
257 | f = stderr; |
258 | } | |
259 | ||
ff41a59f | 260 | if (code == FINFO) { |
ff8b29b8 AT |
261 | if (am_server) |
262 | f = stderr; | |
263 | else | |
264 | f = stdout; | |
265 | } | |
266 | ||
65417579 | 267 | if (!f) exit_cleanup(RERR_MESSAGEIO); |
0b76cd63 | 268 | |
65417579 | 269 | if (fwrite(buf, len, 1, f) != 1) exit_cleanup(RERR_MESSAGEIO); |
8d9dc9f9 | 270 | |
bcf5b133 | 271 | if (buf[len-1] == '\r' || buf[len-1] == '\n') fflush(f); |
0b76cd63 | 272 | } |
554e0a8d AT |
273 | |
274 | ||
a039749b MP |
275 | /* This is the rsync debugging function. Call it with FINFO, FERROR or |
276 | * FLOG. */ | |
277 | void rprintf(enum logcode code, const char *format, ...) | |
554e0a8d AT |
278 | { |
279 | va_list ap; | |
280 | char buf[1024]; | |
281 | int len; | |
282 | ||
283 | va_start(ap, format); | |
284 | len = vslprintf(buf, sizeof(buf), format, ap); | |
285 | va_end(ap); | |
286 | ||
287 | if (len > sizeof(buf)-1) exit_cleanup(RERR_MESSAGEIO); | |
288 | ||
ff41a59f | 289 | rwrite(code, buf, len); |
554e0a8d | 290 | } |
0b76cd63 | 291 | |
a039749b MP |
292 | |
293 | /* This is like rprintf, but it also tries to print some | |
294 | * representation of the error code. Normally errcode = errno. | |
295 | * | |
296 | * Unlike rprintf, this always adds a newline and there should not be | |
297 | * one in the format string. | |
298 | * | |
299 | * Note that since strerror might involve dynamically loading a | |
300 | * message catalog we need to call it once before chroot-ing. */ | |
301 | void rsyserr(enum logcode code, int errcode, const char *format, ...) | |
302 | { | |
303 | va_list ap; | |
304 | char buf[1024]; | |
305 | int len, sys_len; | |
306 | char *sysmsg; | |
307 | ||
308 | va_start(ap, format); | |
309 | len = vslprintf(buf, sizeof(buf), format, ap); | |
310 | va_end(ap); | |
311 | ||
312 | if (len > sizeof(buf)-1) exit_cleanup(RERR_MESSAGEIO); | |
313 | ||
314 | sysmsg = strerror(errcode); | |
315 | sys_len = strlen(sysmsg); | |
316 | if (len + 3 + sys_len > sizeof(buf) - 1) | |
317 | exit_cleanup(RERR_MESSAGEIO); | |
318 | ||
319 | strcpy(buf + len, ": "); | |
320 | len += 2; | |
321 | strcpy(buf + len, sysmsg); | |
322 | len += sys_len; | |
323 | strcpy(buf + len, "\n"); | |
324 | len++; | |
325 | ||
326 | rwrite(code, buf, len); | |
327 | } | |
328 | ||
329 | ||
330 | ||
ff41a59f | 331 | void rflush(enum logcode code) |
0b76cd63 AT |
332 | { |
333 | FILE *f = NULL; | |
334 | extern int am_daemon; | |
335 | ||
336 | if (am_daemon) { | |
337 | return; | |
338 | } | |
339 | ||
ff41a59f | 340 | if (code == FLOG) { |
e08bfe12 AT |
341 | return; |
342 | } | |
343 | ||
ff41a59f | 344 | if (code == FERROR) { |
0b76cd63 AT |
345 | f = stderr; |
346 | } | |
347 | ||
ff41a59f | 348 | if (code == FINFO) { |
0b76cd63 AT |
349 | extern int am_server; |
350 | if (am_server) | |
351 | f = stderr; | |
352 | else | |
353 | f = stdout; | |
354 | } | |
355 | ||
65417579 | 356 | if (!f) exit_cleanup(RERR_MESSAGEIO); |
0b76cd63 AT |
357 | fflush(f); |
358 | } | |
359 | ||
11a5a3c7 | 360 | |
e08bfe12 AT |
361 | |
362 | /* a generic logging routine for send/recv, with parameter | |
363 | substitiution */ | |
0f3203c3 | 364 | static void log_formatted(enum logcode code, |
b6062654 | 365 | char *format, char *op, struct file_struct *file, |
1b7c47cb | 366 | struct stats *initial_stats) |
e08bfe12 AT |
367 | { |
368 | extern int module_id; | |
97cb8dc2 | 369 | extern char *auth_user; |
e08bfe12 | 370 | char buf[1024]; |
ab7104da | 371 | char buf2[1024]; |
e08bfe12 | 372 | char *p, *s, *n; |
e08bfe12 | 373 | int l; |
1b7c47cb AT |
374 | extern struct stats stats; |
375 | extern int am_sender; | |
af77cc6b | 376 | extern int am_daemon; |
1b7c47cb | 377 | int64 b; |
e08bfe12 | 378 | |
37f9805d | 379 | strlcpy(buf, format, sizeof(buf)); |
e08bfe12 AT |
380 | |
381 | for (s=&buf[0]; | |
382 | s && (p=strchr(s,'%')); ) { | |
383 | n = NULL; | |
384 | s = p + 1; | |
385 | ||
386 | switch (p[1]) { | |
af77cc6b AT |
387 | case 'h': if (am_daemon) n = client_name(0); break; |
388 | case 'a': if (am_daemon) n = client_addr(0); break; | |
e08bfe12 | 389 | case 'l': |
37f9805d | 390 | slprintf(buf2,sizeof(buf2),"%.0f", |
e08bfe12 AT |
391 | (double)file->length); |
392 | n = buf2; | |
393 | break; | |
394 | case 'p': | |
37f9805d | 395 | slprintf(buf2,sizeof(buf2),"%d", |
e08bfe12 AT |
396 | (int)getpid()); |
397 | n = buf2; | |
398 | break; | |
399 | case 'o': n = op; break; | |
ab7104da | 400 | case 'f': |
37f9805d | 401 | slprintf(buf2, sizeof(buf2), "%s/%s", |
ab7104da AT |
402 | file->basedir?file->basedir:"", |
403 | f_name(file)); | |
404 | clean_fname(buf2); | |
405 | n = buf2; | |
b6062654 | 406 | if (*n == '/') n++; |
ab7104da | 407 | break; |
97cb8dc2 | 408 | case 'm': n = lp_name(module_id); break; |
b6062654 | 409 | case 't': n = timestring(time(NULL)); break; |
97cb8dc2 AT |
410 | case 'P': n = lp_path(module_id); break; |
411 | case 'u': n = auth_user; break; | |
1b7c47cb AT |
412 | case 'b': |
413 | if (am_sender) { | |
414 | b = stats.total_written - | |
415 | initial_stats->total_written; | |
416 | } else { | |
417 | b = stats.total_read - | |
418 | initial_stats->total_read; | |
419 | } | |
37f9805d | 420 | slprintf(buf2,sizeof(buf2),"%.0f", (double)b); |
1b7c47cb AT |
421 | n = buf2; |
422 | break; | |
423 | case 'c': | |
424 | if (!am_sender) { | |
425 | b = stats.total_written - | |
426 | initial_stats->total_written; | |
427 | } else { | |
428 | b = stats.total_read - | |
429 | initial_stats->total_read; | |
430 | } | |
37f9805d | 431 | slprintf(buf2,sizeof(buf2),"%.0f", (double)b); |
1b7c47cb AT |
432 | n = buf2; |
433 | break; | |
e08bfe12 AT |
434 | } |
435 | ||
436 | if (!n) continue; | |
437 | ||
438 | l = strlen(n); | |
439 | ||
440 | if ((l-1) + ((int)(s - &buf[0])) > sizeof(buf)) { | |
441 | rprintf(FERROR,"buffer overflow expanding %%%c - exiting\n", | |
442 | p[0]); | |
65417579 | 443 | exit_cleanup(RERR_MESSAGEIO); |
e08bfe12 AT |
444 | } |
445 | ||
446 | if (l != 2) { | |
34720097 | 447 | memmove(s+(l-1), s+1, strlen(s+1)+1); |
e08bfe12 AT |
448 | } |
449 | memcpy(p, n, l); | |
450 | ||
451 | s = p+l; | |
452 | } | |
453 | ||
0f3203c3 | 454 | rprintf(code,"%s\n", buf); |
e08bfe12 AT |
455 | } |
456 | ||
11a5a3c7 | 457 | /* log the outgoing transfer of a file */ |
1b7c47cb | 458 | void log_send(struct file_struct *file, struct stats *initial_stats) |
11a5a3c7 AT |
459 | { |
460 | extern int module_id; | |
b6062654 AT |
461 | extern int am_server; |
462 | extern char *log_format; | |
463 | ||
11a5a3c7 | 464 | if (lp_transfer_logging(module_id)) { |
b6062654 AT |
465 | log_formatted(FLOG, lp_log_format(module_id), "send", file, initial_stats); |
466 | } else if (log_format && !am_server) { | |
467 | log_formatted(FINFO, log_format, "send", file, initial_stats); | |
11a5a3c7 AT |
468 | } |
469 | } | |
470 | ||
471 | /* log the incoming transfer of a file */ | |
1b7c47cb | 472 | void log_recv(struct file_struct *file, struct stats *initial_stats) |
11a5a3c7 AT |
473 | { |
474 | extern int module_id; | |
b6062654 AT |
475 | extern int am_server; |
476 | extern char *log_format; | |
477 | ||
11a5a3c7 | 478 | if (lp_transfer_logging(module_id)) { |
117af102 | 479 | log_formatted(FLOG, lp_log_format(module_id), "recv", file, initial_stats); |
b6062654 | 480 | } else if (log_format && !am_server) { |
117af102 | 481 | log_formatted(FINFO, log_format, "recv", file, initial_stats); |
11a5a3c7 AT |
482 | } |
483 | } | |
484 | ||
af642a61 MP |
485 | |
486 | ||
487 | ||
488 | /* | |
489 | * Called when the transfer is interrupted for some reason. | |
490 | * | |
491 | * Code is one of the RERR_* codes from errcode.h, or terminating | |
492 | * successfully. | |
493 | */ | |
a9766ef1 | 494 | void log_exit(int code, const char *file, int line) |
9b73d1c0 AT |
495 | { |
496 | if (code == 0) { | |
497 | extern struct stats stats; | |
67ea0d48 | 498 | rprintf(FLOG,"wrote %.0f bytes read %.0f bytes total size %.0f\n", |
9b73d1c0 AT |
499 | (double)stats.total_written, |
500 | (double)stats.total_read, | |
501 | (double)stats.total_size); | |
502 | } else { | |
af642a61 MP |
503 | const char *name; |
504 | ||
505 | name = rerr_name(code); | |
506 | if (!name) | |
507 | name = "unexplained error"; | |
508 | ||
509 | rprintf(FLOG,"transfer interrupted: %s (code %d) at %s(%d)\n", | |
510 | name, code, file, line); | |
9b73d1c0 AT |
511 | } |
512 | } | |
513 | ||
af642a61 MP |
514 | |
515 | ||
516 | ||
11a5a3c7 | 517 | /* log the incoming transfer of a file for interactive use, this |
b6062654 AT |
518 | will be called at the end where the client was run |
519 | ||
520 | it i called when a file starts to be transferred | |
521 | */ | |
a9766ef1 | 522 | void log_transfer(struct file_struct *file, const char *fname) |
11a5a3c7 AT |
523 | { |
524 | extern int verbose; | |
525 | ||
526 | if (!verbose) return; | |
527 | ||
528 | rprintf(FINFO,"%s\n", fname); | |
529 | } | |
9b73d1c0 | 530 |