1: /*
2: * Logging and utility functions.
3: *
4: * Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
5: * Copyright (C) 2000-2001 Martin Pool <mbp@samba.org>
6: * Copyright (C) 2003-2020 Wayne Davison
7: *
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 3 of the License, or
11: * (at your option) any later version.
12: *
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.
17: *
18: * You should have received a copy of the GNU General Public License along
19: * with this program; if not, visit the http://fsf.org website.
20: */
21:
22: #include "rsync.h"
23: #include "itypes.h"
24: #include "inums.h"
25:
26: extern int dry_run;
27: extern int am_daemon;
28: extern int am_server;
29: extern int am_sender;
30: extern int am_generator;
31: extern int local_server;
32: extern int quiet;
33: extern int module_id;
34: extern int allow_8bit_chars;
35: extern int protocol_version;
36: extern int always_checksum;
37: extern int preserve_times;
38: extern int msgs2stderr;
39: extern int xfersum_type;
40: extern int checksum_type;
41: extern int stdout_format_has_i;
42: extern int stdout_format_has_o_or_i;
43: extern int logfile_format_has_i;
44: extern int logfile_format_has_o_or_i;
45: extern int receiver_symlink_times;
46: extern int64 total_data_written;
47: extern int64 total_data_read;
48: extern mode_t orig_umask;
49: extern char *auth_user;
50: extern char *stdout_format;
51: extern char *logfile_format;
52: extern char *logfile_name;
53: #ifdef ICONV_CONST
54: extern iconv_t ic_chck;
55: #endif
56: #ifdef ICONV_OPTION
57: extern iconv_t ic_recv;
58: #endif
59: extern char curr_dir[MAXPATHLEN];
60: extern char *full_module_path;
61: extern unsigned int module_dirlen;
62: extern char sender_file_sum[MAX_DIGEST_LEN];
63: extern const char undetermined_hostname[];
64:
65: static int log_initialised;
66: static int logfile_was_closed;
67: static FILE *logfile_fp;
68: struct stats stats;
69:
70: int got_xfer_error = 0;
71: int output_needs_newline = 0;
72: int send_msgs_to_gen = 0;
73:
74: static int64 initial_data_written;
75: static int64 initial_data_read;
76:
77: struct {
78: int code;
79: char const *name;
80: } const rerr_names[] = {
81: { RERR_SYNTAX , "syntax or usage error" },
82: { RERR_PROTOCOL , "protocol incompatibility" },
83: { RERR_FILESELECT , "errors selecting input/output files, dirs" },
84: { RERR_UNSUPPORTED, "requested action not supported" },
85: { RERR_STARTCLIENT, "error starting client-server protocol" },
86: { RERR_SOCKETIO , "error in socket IO" },
87: { RERR_FILEIO , "error in file IO" },
88: { RERR_STREAMIO , "error in rsync protocol data stream" },
89: { RERR_MESSAGEIO , "errors with program diagnostics" },
90: { RERR_IPC , "error in IPC code" },
91: { RERR_CRASHED , "sibling process crashed" },
92: { RERR_TERMINATED , "sibling process terminated abnormally" },
93: { RERR_SIGNAL1 , "received SIGUSR1" },
94: { RERR_SIGNAL , "received SIGINT, SIGTERM, or SIGHUP" },
95: { RERR_WECRASHED , "rsync caught a CRASH-causing signal" },
96: { RERR_WAITCHILD , "waitpid() failed" },
97: { RERR_MALLOC , "error allocating core memory buffers" },
98: { RERR_PARTIAL , "some files/attrs were not transferred (see previous errors)" },
99: { RERR_VANISHED , "some files vanished before they could be transferred" },
100: { RERR_DEL_LIMIT , "the --max-delete limit stopped deletions" },
101: { RERR_TIMEOUT , "timeout in data send/receive" },
102: { RERR_CONTIMEOUT , "timeout waiting for daemon connection" },
103: { RERR_CMD_FAILED , "remote shell failed" },
104: { RERR_CMD_KILLED , "remote shell killed" },
105: { RERR_CMD_RUN , "remote command could not be run" },
106: { RERR_CMD_NOTFOUND,"remote command not found" },
107: { 0, NULL }
108: };
109:
110: /*
111: * Map from rsync error code to name, or return NULL.
112: */
113: static char const *rerr_name(int code)
114: {
115: int i;
116: for (i = 0; rerr_names[i].name; i++) {
117: if (rerr_names[i].code == code)
118: return rerr_names[i].name;
119: }
120: return NULL;
121: }
122:
123: static void logit(int priority, const char *buf)
124: {
125: if (logfile_was_closed)
126: logfile_reopen();
127: if (logfile_fp) {
128: fprintf(logfile_fp, "%s [%d] %s", timestring(time(NULL)), (int)getpid(), buf);
129: fflush(logfile_fp);
130: } else {
131: syslog(priority, "%s", buf);
132: }
133: }
134:
135: static void syslog_init()
136: {
137: int options = LOG_PID;
138:
139: #ifdef LOG_NDELAY
140: options |= LOG_NDELAY;
141: #endif
142:
143: #ifdef LOG_DAEMON
144: openlog(lp_syslog_tag(module_id), options, lp_syslog_facility(module_id));
145: #else
146: openlog(lp_syslog_tag(module_id), options);
147: #endif
148:
149: #ifndef LOG_NDELAY
150: logit(LOG_INFO, "rsyncd started\n");
151: #endif
152: }
153:
154: static void logfile_open(void)
155: {
156: mode_t old_umask = umask(022 | orig_umask);
157: logfile_fp = fopen(logfile_name, "a");
158: umask(old_umask);
159: if (!logfile_fp) {
160: int fopen_errno = errno;
161: /* Rsync falls back to using syslog on failure. */
162: syslog_init();
163: rsyserr(FERROR, fopen_errno,
164: "failed to open log-file %s", logfile_name);
165: rprintf(FINFO, "Ignoring \"log file\" setting.\n");
166: logfile_name = "";
167: }
168: }
169:
170: void log_init(int restart)
171: {
172: if (log_initialised) {
173: if (!restart) /* Note: a restart only happens with am_daemon */
174: return;
175: assert(logfile_name); /* all am_daemon procs got at least an empty string */
176: if (strcmp(logfile_name, lp_log_file(module_id)) != 0) {
177: if (logfile_fp) {
178: fclose(logfile_fp);
179: logfile_fp = NULL;
180: } else
181: closelog();
182: logfile_name = NULL;
183: } else if (*logfile_name)
184: return; /* unchanged, non-empty "log file" names */
185: else if (lp_syslog_facility(-1) != lp_syslog_facility(module_id)
186: || strcmp(lp_syslog_tag(-1), lp_syslog_tag(module_id)) != 0)
187: closelog();
188: else
189: return; /* unchanged syslog settings */
190: } else
191: log_initialised = 1;
192:
193: /* This looks pointless, but it is needed in order for the
194: * C library on some systems to fetch the timezone info
195: * before the chroot. */
196: timestring(time(NULL));
197:
198: /* Optionally use a log file instead of syslog. (Non-daemon
199: * rsyncs will have already set logfile_name, as needed.) */
200: if (am_daemon && !logfile_name)
201: logfile_name = lp_log_file(module_id);
202: if (logfile_name && *logfile_name)
203: logfile_open();
204: else
205: syslog_init();
206: }
207:
208: /* Note that this close & reopen idiom intentionally ignores syslog logging. */
209: void logfile_close(void)
210: {
211: if (logfile_fp) {
212: logfile_was_closed = 1;
213: fclose(logfile_fp);
214: logfile_fp = NULL;
215: }
216: }
217:
218: void logfile_reopen(void)
219: {
220: if (logfile_was_closed) {
221: logfile_was_closed = 0;
222: logfile_open();
223: }
224: }
225:
226: static void filtered_fwrite(FILE *f, const char *in_buf, int in_len, int use_isprint, char end_char)
227: {
228: char outbuf[1024], *ob = outbuf;
229: const char *end = in_buf + in_len;
230: while (in_buf < end) {
231: if (ob - outbuf >= (int)sizeof outbuf - 10) {
232: if (fwrite(outbuf, ob - outbuf, 1, f) != 1)
233: exit_cleanup(RERR_MESSAGEIO);
234: ob = outbuf;
235: }
236: if ((in_buf < end - 4 && *in_buf == '\\' && in_buf[1] == '#'
237: && isDigit(in_buf + 2) && isDigit(in_buf + 3) && isDigit(in_buf + 4))
238: || (*in_buf != '\t' && ((use_isprint && !isPrint(in_buf)) || *(uchar*)in_buf < ' ')))
239: ob += snprintf(ob, 6, "\\#%03o", *(uchar*)in_buf++);
240: else
241: *ob++ = *in_buf++;
242: }
243: if (end_char) /* The "- 10" above means that there is always room for one more char here. */
244: *ob++ = end_char;
245: if (ob != outbuf && fwrite(outbuf, ob - outbuf, 1, f) != 1)
246: exit_cleanup(RERR_MESSAGEIO);
247: }
248:
249: /* this is the underlying (unformatted) rsync debugging function. Call
250: * it with FINFO, FERROR_*, FWARNING, FLOG, or FCLIENT. Note: recursion
251: * can happen with certain fatal conditions. */
252: void rwrite(enum logcode code, const char *buf, int len, int is_utf8)
253: {
254: char trailing_CR_or_NL;
255: FILE *f = msgs2stderr == 1 ? stderr : stdout;
256: #ifdef ICONV_OPTION
257: iconv_t ic = is_utf8 && ic_recv != (iconv_t)-1 ? ic_recv : ic_chck;
258: #else
259: #ifdef ICONV_CONST
260: iconv_t ic = ic_chck;
261: #endif
262: #endif
263:
264: if (len < 0)
265: exit_cleanup(RERR_MESSAGEIO);
266:
267: if (msgs2stderr == 1) {
268: /* A normal daemon can get msgs2stderr set if the socket is busted, so we
269: * change the message destination into an FLOG message in order to try to
270: * get some info about an abnormal-exit into the log file. An rsh daemon
271: * can have this set via user request, so we'll leave the code alone so
272: * that the msg gets logged and then sent to stderr after that. */
273: if (am_daemon > 0 && code != FCLIENT)
274: code = FLOG;
275: } else if (send_msgs_to_gen) {
276: assert(!is_utf8);
277: /* Pass the message to our sibling in native charset. */
278: send_msg((enum msgcode)code, buf, len, 0);
279: return;
280: }
281:
282: if (code == FERROR_SOCKET) /* This gets simplified for a non-sibling. */
283: code = FERROR;
284: else if (code == FERROR_UTF8) {
285: is_utf8 = 1;
286: code = FERROR;
287: }
288:
289: if (code == FCLIENT)
290: code = FINFO;
291: else if (am_daemon || logfile_name) {
292: static int in_block;
293: char msg[2048];
294: int priority = code == FINFO || code == FLOG ? LOG_INFO : LOG_WARNING;
295:
296: if (in_block)
297: return;
298: in_block = 1;
299: if (!log_initialised)
300: log_init(0);
301: strlcpy(msg, buf, MIN((int)sizeof msg, len + 1));
302: logit(priority, msg);
303: in_block = 0;
304:
305: if (code == FLOG || (am_daemon && !am_server))
306: return;
307: } else if (code == FLOG)
308: return;
309:
310: switch (code) {
311: case FERROR_XFER:
312: got_xfer_error = 1;
313: /* FALL THROUGH */
314: case FERROR:
315: case FWARNING:
316: f = stderr;
317: break;
318: case FINFO:
319: if (quiet)
320: return;
321: break;
322: /*case FLOG:*/
323: /*case FCLIENT:*/
324: /*case FERROR_UTF8:*/
325: /*case FERROR_SOCKET:*/
326: default:
327: fprintf(stderr, "Bad logcode in rwrite(): %d [%s]\n", (int)code, who_am_i());
328: exit_cleanup(RERR_MESSAGEIO);
329: }
330:
331: if (am_server && msgs2stderr != 1 && (msgs2stderr != 2 || f != stderr)) {
332: enum msgcode msg = (enum msgcode)code;
333: if (protocol_version < 30) {
334: if (msg == MSG_ERROR)
335: msg = MSG_ERROR_XFER;
336: else if (msg == MSG_WARNING)
337: msg = MSG_INFO;
338: }
339: /* Pass the message to the non-server side. */
340: if (send_msg(msg, buf, len, !is_utf8))
341: return;
342: if (am_daemon > 0) {
343: /* TODO: can we send the error to the user somehow? */
344: return;
345: }
346: f = stderr;
347: }
348:
349: if (output_needs_newline) {
350: fputc('\n', f);
351: output_needs_newline = 0;
352: }
353:
354: trailing_CR_or_NL = len && (buf[len-1] == '\n' || buf[len-1] == '\r') ? buf[--len] : '\0';
355:
356: if (len && buf[0] == '\r') {
357: fputc('\r', f);
358: buf++;
359: len--;
360: }
361:
362: #ifdef ICONV_CONST
363: if (ic != (iconv_t)-1) {
364: xbuf outbuf, inbuf;
365: char convbuf[1024];
366: int ierrno;
367:
368: INIT_CONST_XBUF(outbuf, convbuf);
369: INIT_XBUF(inbuf, (char*)buf, len, (size_t)-1);
370:
371: while (inbuf.len) {
372: iconvbufs(ic, &inbuf, &outbuf, inbuf.pos ? 0 : ICB_INIT);
373: ierrno = errno;
374: if (outbuf.len) {
375: char trailing = inbuf.len ? '\0' : trailing_CR_or_NL;
376: filtered_fwrite(f, convbuf, outbuf.len, 0, trailing);
377: if (trailing) {
378: trailing_CR_or_NL = '\0';
379: fflush(f);
380: }
381: outbuf.len = 0;
382: }
383: /* Log one byte of illegal/incomplete sequence and continue with
384: * the next character. Check that the buffer is non-empty for the
385: * sake of robustness. */
386: if ((ierrno == EILSEQ || ierrno == EINVAL) && inbuf.len) {
387: fprintf(f, "\\#%03o", CVAL(inbuf.buf, inbuf.pos++));
388: inbuf.len--;
389: }
390: }
391:
392: if (trailing_CR_or_NL) {
393: fputc(trailing_CR_or_NL, f);
394: fflush(f);
395: }
396: } else
397: #endif
398: {
399: filtered_fwrite(f, buf, len, !allow_8bit_chars, trailing_CR_or_NL);
400: if (trailing_CR_or_NL)
401: fflush(f);
402: }
403: }
404:
405: /* This is the rsync debugging function. Call it with FINFO, FERROR_*,
406: * FWARNING, FLOG, or FCLIENT. */
407: void rprintf(enum logcode code, const char *format, ...)
408: {
409: va_list ap;
410: char buf[BIGPATHBUFLEN];
411: size_t len;
412:
413: va_start(ap, format);
414: len = vsnprintf(buf, sizeof buf, format, ap);
415: va_end(ap);
416:
417: /* Deal with buffer overruns. Instead of panicking, just
418: * truncate the resulting string. (Note that configure ensures
419: * that we have a vsnprintf() that doesn't ever return -1.) */
420: if (len > sizeof buf - 1) {
421: static const char ellipsis[] = "[...]";
422:
423: /* Reset length, and zero-terminate the end of our buffer */
424: len = sizeof buf - 1;
425: buf[len] = '\0';
426:
427: /* Copy the ellipsis to the end of the string, but give
428: * us one extra character:
429: *
430: * v--- null byte at buf[sizeof buf - 1]
431: * abcdefghij0
432: * -> abcd[...]00 <-- now two null bytes at end
433: *
434: * If the input format string has a trailing newline,
435: * we copy it into that extra null; if it doesn't, well,
436: * all we lose is one byte. */
437: memcpy(buf+len-sizeof ellipsis, ellipsis, sizeof ellipsis);
438: if (format[strlen(format)-1] == '\n') {
439: buf[len-1] = '\n';
440: }
441: }
442:
443: rwrite(code, buf, len, 0);
444: }
445:
446: /* This is like rprintf, but it also tries to print some
447: * representation of the error code. Normally errcode = errno.
448: *
449: * Unlike rprintf, this always adds a newline and there should not be
450: * one in the format string.
451: *
452: * Note that since strerror might involve dynamically loading a
453: * message catalog we need to call it once before chroot-ing. */
454: void rsyserr(enum logcode code, int errcode, const char *format, ...)
455: {
456: va_list ap;
457: char buf[BIGPATHBUFLEN];
458: size_t len;
459:
460: len = snprintf(buf, sizeof buf, RSYNC_NAME ": [%s] ", who_am_i());
461:
462: va_start(ap, format);
463: len += vsnprintf(buf + len, sizeof buf - len, format, ap);
464: va_end(ap);
465:
466: if (len < sizeof buf) {
467: len += snprintf(buf + len, sizeof buf - len,
468: ": %s (%d)\n", strerror(errcode), errcode);
469: }
470: if (len >= sizeof buf)
471: exit_cleanup(RERR_MESSAGEIO);
472:
473: rwrite(code, buf, len, 0);
474: }
475:
476: void rflush(enum logcode code)
477: {
478: FILE *f;
479:
480: if (am_daemon || code == FLOG)
481: return;
482:
483: if (!am_server && (code == FINFO || code == FCLIENT))
484: f = stdout;
485: else
486: f = stderr;
487:
488: fflush(f);
489: }
490:
491: void remember_initial_stats(void)
492: {
493: initial_data_read = total_data_read;
494: initial_data_written = total_data_written;
495: }
496:
497: /* A generic logging routine for send/recv, with parameter substitiution. */
498: static void log_formatted(enum logcode code, const char *format, const char *op,
499: struct file_struct *file, const char *fname, int iflags,
500: const char *hlink)
501: {
502: char buf[MAXPATHLEN+1024], buf2[MAXPATHLEN], fmt[32];
503: char *p, *s, *c;
504: const char *n;
505: size_t len, total;
506: int64 b;
507:
508: *fmt = '%';
509:
510: /* We expand % codes one by one in place in buf. We don't
511: * copy in the terminating null of the inserted strings, but
512: * rather keep going until we reach the null of the format. */
513: total = strlcpy(buf, format, sizeof buf);
514: if (total > MAXPATHLEN) {
515: rprintf(FERROR, "log-format string is WAY too long!\n");
516: exit_cleanup(RERR_MESSAGEIO);
517: }
518: buf[total++] = '\n';
519: buf[total] = '\0';
520:
521: for (p = buf; (p = strchr(p, '%')) != NULL; ) {
522: int humanize = 0;
523: s = p++;
524: c = fmt + 1;
525: while (*p == '\'') {
526: humanize++;
527: p++;
528: }
529: if (*p == '-')
530: *c++ = *p++;
531: while (isDigit(p) && c - fmt < (int)(sizeof fmt) - 8)
532: *c++ = *p++;
533: while (*p == '\'') {
534: humanize++;
535: p++;
536: }
537: if (!*p)
538: break;
539: *c = '\0';
540: n = NULL;
541:
542: /* Note for %h and %a: it doesn't matter what fd we pass to
543: * client_{name,addr} because rsync_module will already have
544: * forced the answer to be cached (assuming, of course, for %h
545: * that lp_reverse_lookup(module_id) is true). */
546: switch (*p) {
547: case 'h':
548: if (am_daemon) {
549: n = lp_reverse_lookup(module_id)
550: ? client_name(0) : undetermined_hostname;
551: }
552: break;
553: case 'a':
554: if (am_daemon)
555: n = client_addr(0);
556: break;
557: case 'l':
558: strlcat(fmt, "s", sizeof fmt);
559: snprintf(buf2, sizeof buf2, fmt,
560: do_big_num(F_LENGTH(file), humanize, NULL));
561: n = buf2;
562: break;
563: case 'U':
564: strlcat(fmt, "u", sizeof fmt);
565: snprintf(buf2, sizeof buf2, fmt,
566: uid_ndx ? F_OWNER(file) : 0);
567: n = buf2;
568: break;
569: case 'G':
570: if (!gid_ndx || file->flags & FLAG_SKIP_GROUP)
571: n = "DEFAULT";
572: else {
573: strlcat(fmt, "u", sizeof fmt);
574: snprintf(buf2, sizeof buf2, fmt,
575: F_GROUP(file));
576: n = buf2;
577: }
578: break;
579: case 'p':
580: strlcat(fmt, "d", sizeof fmt);
581: snprintf(buf2, sizeof buf2, fmt, (int)getpid());
582: n = buf2;
583: break;
584: case 'M':
585: n = c = timestring(file->modtime);
586: while ((c = strchr(c, ' ')) != NULL)
587: *c = '-';
588: break;
589: case 'B':
590: c = buf2 + MAXPATHLEN - PERMSTRING_SIZE - 1;
591: permstring(c, file->mode);
592: n = c + 1; /* skip the type char */
593: break;
594: case 'o':
595: n = op;
596: break;
597: case 'f':
598: if (fname) {
599: c = f_name_buf();
600: strlcpy(c, fname, MAXPATHLEN);
601: } else
602: c = f_name(file, NULL);
603: if (am_sender && F_PATHNAME(file)) {
604: pathjoin(buf2, sizeof buf2,
605: F_PATHNAME(file), c);
606: clean_fname(buf2, 0);
607: if (fmt[1]) {
608: strlcpy(c, buf2, MAXPATHLEN);
609: n = c;
610: } else
611: n = buf2;
612: } else if (am_daemon && *c != '/') {
613: pathjoin(buf2, sizeof buf2,
614: curr_dir + module_dirlen, c);
615: clean_fname(buf2, 0);
616: if (fmt[1]) {
617: strlcpy(c, buf2, MAXPATHLEN);
618: n = c;
619: } else
620: n = buf2;
621: } else {
622: clean_fname(c, 0);
623: n = c;
624: }
625: if (*n == '/')
626: n++;
627: break;
628: case 'n':
629: if (fname) {
630: c = f_name_buf();
631: strlcpy(c, fname, MAXPATHLEN);
632: } else
633: c = f_name(file, NULL);
634: if (S_ISDIR(file->mode))
635: strlcat(c, "/", MAXPATHLEN);
636: n = c;
637: break;
638: case 'L':
639: if (hlink && *hlink) {
640: n = hlink;
641: strlcpy(buf2, " => ", sizeof buf2);
642: } else if (S_ISLNK(file->mode) && !fname) {
643: n = F_SYMLINK(file);
644: strlcpy(buf2, " -> ", sizeof buf2);
645: } else {
646: n = "";
647: if (!fmt[1])
648: break;
649: strlcpy(buf2, " ", sizeof buf2);
650: }
651: strlcat(fmt, "s", sizeof fmt);
652: snprintf(buf2 + 4, sizeof buf2 - 4, fmt, n);
653: n = buf2;
654: break;
655: case 'm':
656: n = lp_name(module_id);
657: break;
658: case 't':
659: n = timestring(time(NULL));
660: break;
661: case 'P':
662: n = full_module_path;
663: break;
664: case 'u':
665: n = auth_user;
666: break;
667: case 'b':
668: case 'c':
669: if (!(iflags & ITEM_TRANSFER))
670: b = 0;
671: else if ((!!am_sender) ^ (*p == 'c'))
672: b = total_data_written - initial_data_written;
673: else
674: b = total_data_read - initial_data_read;
675: strlcat(fmt, "s", sizeof fmt);
676: snprintf(buf2, sizeof buf2, fmt,
677: do_big_num(b, humanize, NULL));
678: n = buf2;
679: break;
680: case 'C':
681: n = NULL;
682: if (S_ISREG(file->mode)) {
683: if (always_checksum)
684: n = sum_as_hex(checksum_type, F_SUM(file), 1);
685: else if (iflags & ITEM_TRANSFER)
686: n = sum_as_hex(xfersum_type, sender_file_sum, 0);
687: }
688: if (!n) {
689: int sum_len = csum_len_for_type(always_checksum ? checksum_type : xfersum_type,
690: always_checksum);
691: memset(buf2, ' ', sum_len*2);
692: buf2[sum_len*2] = '\0';
693: n = buf2;
694: }
695: break;
696: case 'i':
697: if (iflags & ITEM_DELETED) {
698: n = "*deleting ";
699: break;
700: }
701: n = c = buf2 + MAXPATHLEN - 32;
702: c[0] = iflags & ITEM_LOCAL_CHANGE
703: ? iflags & ITEM_XNAME_FOLLOWS ? 'h' : 'c'
704: : !(iflags & ITEM_TRANSFER) ? '.'
705: : !local_server && *op == 's' ? '<' : '>';
706: if (S_ISLNK(file->mode)) {
707: c[1] = 'L';
708: c[3] = '.';
709: c[4] = !(iflags & ITEM_REPORT_TIME) ? '.'
710: : !preserve_times || !receiver_symlink_times
711: || (iflags & ITEM_REPORT_TIMEFAIL) ? 'T' : 't';
712: } else {
713: c[1] = S_ISDIR(file->mode) ? 'd'
714: : IS_SPECIAL(file->mode) ? 'S'
715: : IS_DEVICE(file->mode) ? 'D' : 'f';
716: c[3] = !(iflags & ITEM_REPORT_SIZE) ? '.' : 's';
717: c[4] = !(iflags & ITEM_REPORT_TIME) ? '.'
718: : !preserve_times ? 'T' : 't';
719: }
720: c[2] = !(iflags & ITEM_REPORT_CHANGE) ? '.' : 'c';
721: c[5] = !(iflags & ITEM_REPORT_PERMS) ? '.' : 'p';
722: c[6] = !(iflags & ITEM_REPORT_OWNER) ? '.' : 'o';
723: c[7] = !(iflags & ITEM_REPORT_GROUP) ? '.' : 'g';
724: c[8] = !(iflags & (ITEM_REPORT_ATIME|ITEM_REPORT_CRTIME)) ? '.'
725: : BITS_SET(iflags, ITEM_REPORT_ATIME|ITEM_REPORT_CRTIME) ? 'b'
726: : iflags & ITEM_REPORT_ATIME ? 'u' : 'n';
727: c[9] = !(iflags & ITEM_REPORT_ACL) ? '.' : 'a';
728: c[10] = !(iflags & ITEM_REPORT_XATTR) ? '.' : 'x';
729: c[11] = !(iflags & ITEM_REPORT_FFLAGS) ? '.' : 'f';
730: c[12] = '\0';
731:
732: if (iflags & (ITEM_IS_NEW|ITEM_MISSING_DATA)) {
733: char ch = iflags & ITEM_IS_NEW ? '+' : '?';
734: int i;
735: for (i = 2; c[i]; i++)
736: c[i] = ch;
737: } else if (c[0] == '.' || c[0] == 'h' || c[0] == 'c') {
738: int i;
739: for (i = 2; c[i]; i++) {
740: if (c[i] != '.')
741: break;
742: }
743: if (!c[i]) {
744: for (i = 2; c[i]; i++)
745: c[i] = ' ';
746: }
747: }
748: break;
749: }
750:
751: /* "n" is the string to be inserted in place of this % code. */
752: if (!n)
753: continue;
754: if (n != buf2 && fmt[1]) {
755: strlcat(fmt, "s", sizeof fmt);
756: snprintf(buf2, sizeof buf2, fmt, n);
757: n = buf2;
758: }
759: len = strlen(n);
760:
761: /* Subtract the length of the escape from the string's size. */
762: total -= p - s + 1;
763:
764: if (len + total >= (size_t)sizeof buf) {
765: rprintf(FERROR,
766: "buffer overflow expanding %%%c -- exiting\n",
767: p[0]);
768: exit_cleanup(RERR_MESSAGEIO);
769: }
770:
771: /* Shuffle the rest of the string along to make space for n */
772: if (len != (size_t)(p - s + 1))
773: memmove(s + len, p + 1, total - (s - buf) + 1);
774: total += len;
775:
776: /* Insert the contents of string "n", but NOT its null. */
777: if (len)
778: memcpy(s, n, len);
779:
780: /* Skip over inserted string; continue looking */
781: p = s + len;
782: }
783:
784: rwrite(code, buf, total, 0);
785: }
786:
787: /* Return 1 if the format escape is in the log-format string (e.g. look for
788: * the 'b' in the "%9b" format escape). */
789: int log_format_has(const char *format, char esc)
790: {
791: const char *p;
792:
793: if (!format)
794: return 0;
795:
796: for (p = format; (p = strchr(p, '%')) != NULL; ) {
797: for (p++; *p == '\''; p++) {} /*SHARED ITERATOR*/
798: if (*p == '-')
799: p++;
800: while (isDigit(p))
801: p++;
802: while (*p == '\'') p++;
803: if (!*p)
804: break;
805: if (*p == esc)
806: return 1;
807: }
808: return 0;
809: }
810:
811: /* Log the transfer of a file. If the code is FCLIENT, the output just goes
812: * to stdout. If it is FLOG, it just goes to the log file. Otherwise we
813: * output to both. */
814: void log_item(enum logcode code, struct file_struct *file, int iflags, const char *hlink)
815: {
816: const char *s_or_r = am_sender ? "send" : "recv";
817:
818: if (code != FLOG && stdout_format && !am_server)
819: log_formatted(FCLIENT, stdout_format, s_or_r, file, NULL, iflags, hlink);
820: if (code != FCLIENT && logfile_format && *logfile_format)
821: log_formatted(FLOG, logfile_format, s_or_r, file, NULL, iflags, hlink);
822: }
823:
824: void maybe_log_item(struct file_struct *file, int iflags, int itemizing, const char *buf)
825: {
826: int significant_flags = iflags & SIGNIFICANT_ITEM_FLAGS;
827: int see_item = itemizing && (significant_flags || *buf
828: || stdout_format_has_i > 1 || (INFO_GTE(NAME, 2) && stdout_format_has_i));
829: int local_change = iflags & ITEM_LOCAL_CHANGE && significant_flags;
830: if (am_server) {
831: if (logfile_name && !dry_run && see_item
832: && (significant_flags || logfile_format_has_i))
833: log_item(FLOG, file, iflags, buf);
834: } else if (see_item || local_change || *buf
835: || (S_ISDIR(file->mode) && significant_flags)) {
836: enum logcode code = significant_flags || logfile_format_has_i ? FINFO : FCLIENT;
837: log_item(code, file, iflags, buf);
838: }
839: }
840:
841: void log_delete(const char *fname, int mode)
842: {
843: static struct {
844: union file_extras ex[4]; /* just in case... */
845: struct file_struct file;
846: } x; /* Zero-initialized due to static declaration. */
847: int len = strlen(fname);
848: const char *fmt;
849:
850: x.file.mode = mode;
851:
852: if (am_server && protocol_version >= 29 && len < MAXPATHLEN) {
853: if (S_ISDIR(mode))
854: len++; /* directories include trailing null */
855: send_msg(MSG_DELETED, fname, len, am_generator);
856: } else if (!INFO_GTE(DEL, 1) && !stdout_format)
857: ;
858: else {
859: fmt = stdout_format_has_o_or_i ? stdout_format : "deleting %n";
860: log_formatted(FCLIENT, fmt, "del.", &x.file, fname, ITEM_DELETED, NULL);
861: }
862:
863: if (!logfile_name || dry_run || !logfile_format)
864: return;
865:
866: fmt = logfile_format_has_o_or_i ? logfile_format : "deleting %n";
867: log_formatted(FLOG, fmt, "del.", &x.file, fname, ITEM_DELETED, NULL);
868: }
869:
870: /*
871: * Called when the transfer is interrupted for some reason.
872: *
873: * Code is one of the RERR_* codes from errcode.h, or terminating
874: * successfully.
875: */
876: void log_exit(int code, const char *file, int line)
877: {
878: /* The receiving side's stats are split between 2 procs until the
879: * end of the run, so only the sender can output non-final info. */
880: if (code == 0 || am_sender) {
881: rprintf(FLOG,"sent %s bytes received %s bytes total size %s\n",
882: big_num(stats.total_written),
883: big_num(stats.total_read),
884: big_num(stats.total_size));
885: }
886: if (code != 0 && am_server != 2) {
887: const char *name;
888:
889: name = rerr_name(code);
890: if (!name)
891: name = "unexplained error";
892:
893: /* VANISHED is not an error, only a warning */
894: if (code == RERR_VANISHED) {
895: rprintf(FWARNING, "rsync warning: %s (code %d) at %s(%d) [%s=%s]\n",
896: name, code, src_file(file), line, who_am_i(), rsync_version());
897: } else {
898: rprintf(FERROR, "rsync error: %s (code %d) at %s(%d) [%s=%s]\n",
899: name, code, src_file(file), line, who_am_i(), rsync_version());
900: }
901: }
902: }
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