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) 2003-2015 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 checksum_len;
35: extern int allow_8bit_chars;
36: extern int protocol_version;
37: extern int always_checksum;
38: extern int preserve_times;
39: extern int msgs2stderr;
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 int receiver_symlink_times;
45: extern int64 total_data_written;
46: extern int64 total_data_read;
47: extern mode_t orig_umask;
48: extern char *auth_user;
49: extern char *stdout_format;
50: extern char *logfile_format;
51: extern char *logfile_name;
52: #ifdef ICONV_CONST
53: extern iconv_t ic_chck;
54: #endif
55: #ifdef ICONV_OPTION
56: extern iconv_t ic_recv;
57: #endif
58: extern char curr_dir[MAXPATHLEN];
59: extern char *full_module_path;
60: extern unsigned int module_dirlen;
61: extern char sender_file_sum[MAX_DIGEST_LEN];
62: extern const char undetermined_hostname[];
63:
64: static int log_initialised;
65: static int logfile_was_closed;
66: static FILE *logfile_fp;
67: struct stats stats;
68:
69: int got_xfer_error = 0;
70: int output_needs_newline = 0;
71: int send_msgs_to_gen = 0;
72:
73: static int64 initial_data_written;
74: static int64 initial_data_read;
75:
76: struct {
77: int code;
78: char const *name;
79: } const rerr_names[] = {
80: { RERR_SYNTAX , "syntax or usage error" },
81: { RERR_PROTOCOL , "protocol incompatibility" },
82: { RERR_FILESELECT , "errors selecting input/output files, dirs" },
83: { RERR_UNSUPPORTED, "requested action not supported" },
84: { RERR_STARTCLIENT, "error starting client-server protocol" },
85: { RERR_SOCKETIO , "error in socket IO" },
86: { RERR_FILEIO , "error in file IO" },
87: { RERR_STREAMIO , "error in rsync protocol data stream" },
88: { RERR_MESSAGEIO , "errors with program diagnostics" },
89: { RERR_IPC , "error in IPC code" },
90: { RERR_CRASHED , "sibling process crashed" },
91: { RERR_TERMINATED , "sibling process terminated abnormally" },
92: { RERR_SIGNAL1 , "received SIGUSR1" },
93: { RERR_SIGNAL , "received SIGINT, SIGTERM, or SIGHUP" },
94: { RERR_WAITCHILD , "waitpid() failed" },
95: { RERR_MALLOC , "error allocating core memory buffers" },
96: { RERR_PARTIAL , "some files/attrs were not transferred (see previous errors)" },
97: { RERR_VANISHED , "some files vanished before they could be transferred" },
98: { RERR_DEL_LIMIT , "the --max-delete limit stopped deletions" },
99: { RERR_TIMEOUT , "timeout in data send/receive" },
100: { RERR_CONTIMEOUT , "timeout waiting for daemon connection" },
101: { RERR_CMD_FAILED , "remote shell failed" },
102: { RERR_CMD_KILLED , "remote shell killed" },
103: { RERR_CMD_RUN , "remote command could not be run" },
104: { RERR_CMD_NOTFOUND,"remote command not found" },
105: { 0, NULL }
106: };
107:
108: /*
109: * Map from rsync error code to name, or return NULL.
110: */
111: static char const *rerr_name(int code)
112: {
113: int i;
114: for (i = 0; rerr_names[i].name; i++) {
115: if (rerr_names[i].code == code)
116: return rerr_names[i].name;
117: }
118: return NULL;
119: }
120:
121: static void logit(int priority, const char *buf)
122: {
123: if (logfile_was_closed)
124: logfile_reopen();
125: if (logfile_fp) {
126: fprintf(logfile_fp, "%s [%d] %s", timestring(time(NULL)), (int)getpid(), buf);
127: fflush(logfile_fp);
128: } else {
129: syslog(priority, "%s", buf);
130: }
131: }
132:
133: static void syslog_init()
134: {
135: static int been_here = 0;
136: int options = LOG_PID;
137:
138: if (been_here)
139: return;
140: been_here = 1;
141:
142: #ifdef LOG_NDELAY
143: options |= LOG_NDELAY;
144: #endif
145:
146: #ifdef LOG_DAEMON
147: openlog("rsyncd", options, lp_syslog_facility(module_id));
148: #else
149: openlog("rsyncd", options);
150: #endif
151:
152: #ifndef LOG_NDELAY
153: logit(LOG_INFO, "rsyncd started\n");
154: #endif
155: }
156:
157: static void logfile_open(void)
158: {
159: mode_t old_umask = umask(022 | orig_umask);
160: logfile_fp = fopen(logfile_name, "a");
161: umask(old_umask);
162: if (!logfile_fp) {
163: int fopen_errno = errno;
164: /* Rsync falls back to using syslog on failure. */
165: syslog_init();
166: rsyserr(FERROR, fopen_errno,
167: "failed to open log-file %s", logfile_name);
168: rprintf(FINFO, "Ignoring \"log file\" setting.\n");
169: }
170: }
171:
172: void log_init(int restart)
173: {
174: if (log_initialised) {
175: if (!restart)
176: return;
177: if (strcmp(logfile_name, lp_log_file(module_id)) != 0) {
178: if (logfile_fp) {
179: fclose(logfile_fp);
180: logfile_fp = NULL;
181: } else
182: closelog();
183: logfile_name = NULL;
184: } else if (*logfile_name)
185: return; /* unchanged, non-empty "log file" names */
186: else if (lp_syslog_facility(-1) != lp_syslog_facility(module_id))
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: void logfile_close(void)
209: {
210: if (logfile_fp) {
211: logfile_was_closed = 1;
212: fclose(logfile_fp);
213: logfile_fp = NULL;
214: }
215: }
216:
217: void logfile_reopen(void)
218: {
219: if (logfile_was_closed) {
220: logfile_was_closed = 0;
221: logfile_open();
222: }
223: }
224:
225: static void filtered_fwrite(FILE *f, const char *buf, int len, int use_isprint)
226: {
227: const char *s, *end = buf + len;
228: for (s = buf; s < end; s++) {
229: if ((s < end - 4
230: && *s == '\\' && s[1] == '#'
231: && isDigit(s + 2)
232: && isDigit(s + 3)
233: && isDigit(s + 4))
234: || (*s != '\t'
235: && ((use_isprint && !isPrint(s))
236: || *(uchar*)s < ' '))) {
237: if (s != buf && fwrite(buf, s - buf, 1, f) != 1)
238: exit_cleanup(RERR_MESSAGEIO);
239: fprintf(f, "\\#%03o", *(uchar*)s);
240: buf = s + 1;
241: }
242: }
243: if (buf != end && fwrite(buf, end - buf, 1, f) != 1)
244: exit_cleanup(RERR_MESSAGEIO);
245: }
246:
247: /* this is the underlying (unformatted) rsync debugging function. Call
248: * it with FINFO, FERROR_*, FWARNING, FLOG, or FCLIENT. Note: recursion
249: * can happen with certain fatal conditions. */
250: void rwrite(enum logcode code, const char *buf, int len, int is_utf8)
251: {
252: int trailing_CR_or_NL;
253: FILE *f = msgs2stderr ? stderr : stdout;
254: #ifdef ICONV_OPTION
255: iconv_t ic = is_utf8 && ic_recv != (iconv_t)-1 ? ic_recv : ic_chck;
256: #else
257: #ifdef ICONV_CONST
258: iconv_t ic = ic_chck;
259: #endif
260: #endif
261:
262: if (len < 0)
263: exit_cleanup(RERR_MESSAGEIO);
264:
265: if (msgs2stderr) {
266: if (!am_daemon) {
267: if (code == FLOG)
268: return;
269: goto output_msg;
270: }
271: if (code == FCLIENT)
272: return;
273: code = FLOG;
274: } else if (send_msgs_to_gen) {
275: assert(!is_utf8);
276: /* Pass the message to our sibling in native charset. */
277: send_msg((enum msgcode)code, buf, len, 0);
278: return;
279: }
280:
281: if (code == FERROR_SOCKET) /* This gets simplified for a non-sibling. */
282: code = FERROR;
283: else if (code == FERROR_UTF8) {
284: is_utf8 = 1;
285: code = FERROR;
286: }
287:
288: if (code == FCLIENT)
289: code = FINFO;
290: else if (am_daemon || logfile_name) {
291: static int in_block;
292: char msg[2048];
293: int priority = code == FINFO || code == FLOG ? LOG_INFO : LOG_WARNING;
294:
295: if (in_block)
296: return;
297: in_block = 1;
298: if (!log_initialised)
299: log_init(0);
300: strlcpy(msg, buf, MIN((int)sizeof msg, len + 1));
301: logit(priority, msg);
302: in_block = 0;
303:
304: if (code == FLOG || (am_daemon && !am_server))
305: return;
306: } else if (code == FLOG)
307: return;
308:
309: if (quiet && code == FINFO)
310: return;
311:
312: if (am_server) {
313: enum msgcode msg = (enum msgcode)code;
314: if (protocol_version < 30) {
315: if (msg == MSG_ERROR)
316: msg = MSG_ERROR_XFER;
317: else if (msg == MSG_WARNING)
318: msg = MSG_INFO;
319: }
320: /* Pass the message to the non-server side. */
321: if (send_msg(msg, buf, len, !is_utf8))
322: return;
323: if (am_daemon) {
324: /* TODO: can we send the error to the user somehow? */
325: return;
326: }
327: f = stderr;
328: }
329:
330: output_msg:
331: switch (code) {
332: case FERROR_XFER:
333: got_xfer_error = 1;
334: /* FALL THROUGH */
335: case FERROR:
336: case FERROR_UTF8:
337: case FERROR_SOCKET:
338: case FWARNING:
339: f = stderr;
340: break;
341: case FLOG:
342: case FINFO:
343: case FCLIENT:
344: break;
345: default:
346: fprintf(stderr, "Unknown logcode in rwrite(): %d [%s]\n", (int)code, who_am_i());
347: exit_cleanup(RERR_MESSAGEIO);
348: }
349:
350: if (output_needs_newline) {
351: fputc('\n', f);
352: output_needs_newline = 0;
353: }
354:
355: trailing_CR_or_NL = len && (buf[len-1] == '\n' || buf[len-1] == '\r')
356: ? buf[--len] : 0;
357:
358: if (len && buf[0] == '\r') {
359: fputc('\r', f);
360: buf++;
361: len--;
362: }
363:
364: #ifdef ICONV_CONST
365: if (ic != (iconv_t)-1) {
366: xbuf outbuf, inbuf;
367: char convbuf[1024];
368: int ierrno;
369:
370: INIT_CONST_XBUF(outbuf, convbuf);
371: INIT_XBUF(inbuf, (char*)buf, len, (size_t)-1);
372:
373: while (inbuf.len) {
374: iconvbufs(ic, &inbuf, &outbuf, inbuf.pos ? 0 : ICB_INIT);
375: ierrno = errno;
376: if (outbuf.len) {
377: filtered_fwrite(f, convbuf, outbuf.len, 0);
378: outbuf.len = 0;
379: }
380: if (!ierrno || ierrno == E2BIG)
381: continue;
382: fprintf(f, "\\#%03o", CVAL(inbuf.buf, inbuf.pos++));
383: inbuf.len--;
384: }
385: } else
386: #endif
387: filtered_fwrite(f, buf, len, !allow_8bit_chars);
388:
389: if (trailing_CR_or_NL) {
390: fputc(trailing_CR_or_NL, f);
391: fflush(f);
392: }
393: }
394:
395: /* This is the rsync debugging function. Call it with FINFO, FERROR_*,
396: * FWARNING, FLOG, or FCLIENT. */
397: void rprintf(enum logcode code, const char *format, ...)
398: {
399: va_list ap;
400: char buf[BIGPATHBUFLEN];
401: size_t len;
402:
403: va_start(ap, format);
404: len = vsnprintf(buf, sizeof buf, format, ap);
405: va_end(ap);
406:
407: /* Deal with buffer overruns. Instead of panicking, just
408: * truncate the resulting string. (Note that configure ensures
409: * that we have a vsnprintf() that doesn't ever return -1.) */
410: if (len > sizeof buf - 1) {
411: static const char ellipsis[] = "[...]";
412:
413: /* Reset length, and zero-terminate the end of our buffer */
414: len = sizeof buf - 1;
415: buf[len] = '\0';
416:
417: /* Copy the ellipsis to the end of the string, but give
418: * us one extra character:
419: *
420: * v--- null byte at buf[sizeof buf - 1]
421: * abcdefghij0
422: * -> abcd[...]00 <-- now two null bytes at end
423: *
424: * If the input format string has a trailing newline,
425: * we copy it into that extra null; if it doesn't, well,
426: * all we lose is one byte. */
427: memcpy(buf+len-sizeof ellipsis, ellipsis, sizeof ellipsis);
428: if (format[strlen(format)-1] == '\n') {
429: buf[len-1] = '\n';
430: }
431: }
432:
433: rwrite(code, buf, len, 0);
434: }
435:
436: /* This is like rprintf, but it also tries to print some
437: * representation of the error code. Normally errcode = errno.
438: *
439: * Unlike rprintf, this always adds a newline and there should not be
440: * one in the format string.
441: *
442: * Note that since strerror might involve dynamically loading a
443: * message catalog we need to call it once before chroot-ing. */
444: void rsyserr(enum logcode code, int errcode, const char *format, ...)
445: {
446: va_list ap;
447: char buf[BIGPATHBUFLEN];
448: size_t len;
449:
450: strlcpy(buf, RSYNC_NAME ": ", sizeof buf);
451: len = (sizeof RSYNC_NAME ": ") - 1;
452:
453: va_start(ap, format);
454: len += vsnprintf(buf + len, sizeof buf - len, format, ap);
455: va_end(ap);
456:
457: if (len < sizeof buf) {
458: len += snprintf(buf + len, sizeof buf - len,
459: ": %s (%d)\n", strerror(errcode), errcode);
460: }
461: if (len >= sizeof buf)
462: exit_cleanup(RERR_MESSAGEIO);
463:
464: rwrite(code, buf, len, 0);
465: }
466:
467: void rflush(enum logcode code)
468: {
469: FILE *f;
470:
471: if (am_daemon || code == FLOG)
472: return;
473:
474: if (!am_server && (code == FINFO || code == FCLIENT))
475: f = stdout;
476: else
477: f = stderr;
478:
479: fflush(f);
480: }
481:
482: void remember_initial_stats(void)
483: {
484: initial_data_read = total_data_read;
485: initial_data_written = total_data_written;
486: }
487:
488: /* A generic logging routine for send/recv, with parameter substitiution. */
489: static void log_formatted(enum logcode code, const char *format, const char *op,
490: struct file_struct *file, const char *fname, int iflags,
491: const char *hlink)
492: {
493: char buf[MAXPATHLEN+1024], buf2[MAXPATHLEN], fmt[32];
494: char *p, *s, *c;
495: const char *n;
496: size_t len, total;
497: int64 b;
498:
499: *fmt = '%';
500:
501: /* We expand % codes one by one in place in buf. We don't
502: * copy in the terminating null of the inserted strings, but
503: * rather keep going until we reach the null of the format. */
504: total = strlcpy(buf, format, sizeof buf);
505: if (total > MAXPATHLEN) {
506: rprintf(FERROR, "log-format string is WAY too long!\n");
507: exit_cleanup(RERR_MESSAGEIO);
508: }
509: buf[total++] = '\n';
510: buf[total] = '\0';
511:
512: for (p = buf; (p = strchr(p, '%')) != NULL; ) {
513: int humanize = 0;
514: s = p++;
515: c = fmt + 1;
516: while (*p == '\'') {
517: humanize++;
518: p++;
519: }
520: if (*p == '-')
521: *c++ = *p++;
522: while (isDigit(p) && c - fmt < (int)(sizeof fmt) - 8)
523: *c++ = *p++;
524: while (*p == '\'') {
525: humanize++;
526: p++;
527: }
528: if (!*p)
529: break;
530: *c = '\0';
531: n = NULL;
532:
533: /* Note for %h and %a: it doesn't matter what fd we pass to
534: * client_{name,addr} because rsync_module will already have
535: * forced the answer to be cached (assuming, of course, for %h
536: * that lp_reverse_lookup(module_id) is true). */
537: switch (*p) {
538: case 'h':
539: if (am_daemon) {
540: n = lp_reverse_lookup(module_id)
541: ? client_name(0) : undetermined_hostname;
542: }
543: break;
544: case 'a':
545: if (am_daemon)
546: n = client_addr(0);
547: break;
548: case 'l':
549: strlcat(fmt, "s", sizeof fmt);
550: snprintf(buf2, sizeof buf2, fmt,
551: do_big_num(F_LENGTH(file), humanize, NULL));
552: n = buf2;
553: break;
554: case 'U':
555: strlcat(fmt, "u", sizeof fmt);
556: snprintf(buf2, sizeof buf2, fmt,
557: uid_ndx ? F_OWNER(file) : 0);
558: n = buf2;
559: break;
560: case 'G':
561: if (!gid_ndx || file->flags & FLAG_SKIP_GROUP)
562: n = "DEFAULT";
563: else {
564: strlcat(fmt, "u", sizeof fmt);
565: snprintf(buf2, sizeof buf2, fmt,
566: F_GROUP(file));
567: n = buf2;
568: }
569: break;
570: case 'p':
571: strlcat(fmt, "d", sizeof fmt);
572: snprintf(buf2, sizeof buf2, fmt, (int)getpid());
573: n = buf2;
574: break;
575: case 'M':
576: n = c = timestring(file->modtime);
577: while ((c = strchr(c, ' ')) != NULL)
578: *c = '-';
579: break;
580: case 'B':
581: c = buf2 + MAXPATHLEN - PERMSTRING_SIZE - 1;
582: permstring(c, file->mode);
583: n = c + 1; /* skip the type char */
584: break;
585: case 'o':
586: n = op;
587: break;
588: case 'f':
589: if (fname) {
590: c = f_name_buf();
591: strlcpy(c, fname, MAXPATHLEN);
592: } else
593: c = f_name(file, NULL);
594: if (am_sender && F_PATHNAME(file)) {
595: pathjoin(buf2, sizeof buf2,
596: F_PATHNAME(file), c);
597: clean_fname(buf2, 0);
598: if (fmt[1]) {
599: strlcpy(c, buf2, MAXPATHLEN);
600: n = c;
601: } else
602: n = buf2;
603: } else if (am_daemon && *c != '/') {
604: pathjoin(buf2, sizeof buf2,
605: curr_dir + module_dirlen, 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 {
613: clean_fname(c, 0);
614: n = c;
615: }
616: if (*n == '/')
617: n++;
618: break;
619: case 'n':
620: if (fname) {
621: c = f_name_buf();
622: strlcpy(c, fname, MAXPATHLEN);
623: } else
624: c = f_name(file, NULL);
625: if (S_ISDIR(file->mode))
626: strlcat(c, "/", MAXPATHLEN);
627: n = c;
628: break;
629: case 'L':
630: if (hlink && *hlink) {
631: n = hlink;
632: strlcpy(buf2, " => ", sizeof buf2);
633: } else if (S_ISLNK(file->mode) && !fname) {
634: n = F_SYMLINK(file);
635: strlcpy(buf2, " -> ", sizeof buf2);
636: } else {
637: n = "";
638: if (!fmt[1])
639: break;
640: strlcpy(buf2, " ", sizeof buf2);
641: }
642: strlcat(fmt, "s", sizeof fmt);
643: snprintf(buf2 + 4, sizeof buf2 - 4, fmt, n);
644: n = buf2;
645: break;
646: case 'm':
647: n = lp_name(module_id);
648: break;
649: case 't':
650: n = timestring(time(NULL));
651: break;
652: case 'P':
653: n = full_module_path;
654: break;
655: case 'u':
656: n = auth_user;
657: break;
658: case 'b':
659: case 'c':
660: if (!(iflags & ITEM_TRANSFER))
661: b = 0;
662: else if ((!!am_sender) ^ (*p == 'c'))
663: b = total_data_written - initial_data_written;
664: else
665: b = total_data_read - initial_data_read;
666: strlcat(fmt, "s", sizeof fmt);
667: snprintf(buf2, sizeof buf2, fmt,
668: do_big_num(b, humanize, NULL));
669: n = buf2;
670: break;
671: case 'C':
672: if (protocol_version >= 30
673: && (iflags & ITEM_TRANSFER
674: || (always_checksum && S_ISREG(file->mode)))) {
675: const char *sum = iflags & ITEM_TRANSFER
676: ? sender_file_sum : F_SUM(file);
677: n = sum_as_hex(sum);
678: } else {
679: memset(buf2, ' ', checksum_len*2);
680: buf2[checksum_len*2] = '\0';
681: n = buf2;
682: }
683: break;
684: case 'i':
685: if (iflags & ITEM_DELETED) {
686: n = "*deleting ";
687: break;
688: }
689: n = c = buf2 + MAXPATHLEN - 32;
690: c[0] = iflags & ITEM_LOCAL_CHANGE
691: ? iflags & ITEM_XNAME_FOLLOWS ? 'h' : 'c'
692: : !(iflags & ITEM_TRANSFER) ? '.'
693: : !local_server && *op == 's' ? '<' : '>';
694: if (S_ISLNK(file->mode)) {
695: c[1] = 'L';
696: c[3] = '.';
697: c[4] = !(iflags & ITEM_REPORT_TIME) ? '.'
698: : !preserve_times || !receiver_symlink_times
699: || (iflags & ITEM_REPORT_TIMEFAIL) ? 'T' : 't';
700: } else {
701: c[1] = S_ISDIR(file->mode) ? 'd'
702: : IS_SPECIAL(file->mode) ? 'S'
703: : IS_DEVICE(file->mode) ? 'D' : 'f';
704: c[3] = !(iflags & ITEM_REPORT_SIZE) ? '.' : 's';
705: c[4] = !(iflags & ITEM_REPORT_TIME) ? '.'
706: : !preserve_times ? 'T' : 't';
707: }
708: c[2] = !(iflags & ITEM_REPORT_CHANGE) ? '.' : 'c';
709: c[5] = !(iflags & ITEM_REPORT_PERMS) ? '.' : 'p';
710: c[6] = !(iflags & ITEM_REPORT_OWNER) ? '.' : 'o';
711: c[7] = !(iflags & ITEM_REPORT_GROUP) ? '.' : 'g';
712: c[8] = !(iflags & ITEM_REPORT_ATIME) ? '.' : 'u';
713: c[9] = !(iflags & ITEM_REPORT_ACL) ? '.' : 'a';
714: c[10] = !(iflags & ITEM_REPORT_XATTR) ? '.' : 'x';
715: c[11] = '\0';
716:
717: if (iflags & (ITEM_IS_NEW|ITEM_MISSING_DATA)) {
718: char ch = iflags & ITEM_IS_NEW ? '+' : '?';
719: int i;
720: for (i = 2; c[i]; i++)
721: c[i] = ch;
722: } else if (c[0] == '.' || c[0] == 'h' || c[0] == 'c') {
723: int i;
724: for (i = 2; c[i]; i++) {
725: if (c[i] != '.')
726: break;
727: }
728: if (!c[i]) {
729: for (i = 2; c[i]; i++)
730: c[i] = ' ';
731: }
732: }
733: break;
734: }
735:
736: /* "n" is the string to be inserted in place of this % code. */
737: if (!n)
738: continue;
739: if (n != buf2 && fmt[1]) {
740: strlcat(fmt, "s", sizeof fmt);
741: snprintf(buf2, sizeof buf2, fmt, n);
742: n = buf2;
743: }
744: len = strlen(n);
745:
746: /* Subtract the length of the escape from the string's size. */
747: total -= p - s + 1;
748:
749: if (len + total >= (size_t)sizeof buf) {
750: rprintf(FERROR,
751: "buffer overflow expanding %%%c -- exiting\n",
752: p[0]);
753: exit_cleanup(RERR_MESSAGEIO);
754: }
755:
756: /* Shuffle the rest of the string along to make space for n */
757: if (len != (size_t)(p - s + 1))
758: memmove(s + len, p + 1, total - (s - buf) + 1);
759: total += len;
760:
761: /* Insert the contents of string "n", but NOT its null. */
762: if (len)
763: memcpy(s, n, len);
764:
765: /* Skip over inserted string; continue looking */
766: p = s + len;
767: }
768:
769: rwrite(code, buf, total, 0);
770: }
771:
772: /* Return 1 if the format escape is in the log-format string (e.g. look for
773: * the 'b' in the "%9b" format escape). */
774: int log_format_has(const char *format, char esc)
775: {
776: const char *p;
777:
778: if (!format)
779: return 0;
780:
781: for (p = format; (p = strchr(p, '%')) != NULL; ) {
782: for (p++; *p == '\''; p++) {} /*SHARED ITERATOR*/
783: if (*p == '-')
784: p++;
785: while (isDigit(p))
786: p++;
787: while (*p == '\'') p++;
788: if (!*p)
789: break;
790: if (*p == esc)
791: return 1;
792: }
793: return 0;
794: }
795:
796: /* Log the transfer of a file. If the code is FCLIENT, the output just goes
797: * to stdout. If it is FLOG, it just goes to the log file. Otherwise we
798: * output to both. */
799: void log_item(enum logcode code, struct file_struct *file, int iflags, const char *hlink)
800: {
801: const char *s_or_r = am_sender ? "send" : "recv";
802:
803: if (code != FLOG && stdout_format && !am_server)
804: log_formatted(FCLIENT, stdout_format, s_or_r, file, NULL, iflags, hlink);
805: if (code != FCLIENT && logfile_format && *logfile_format)
806: log_formatted(FLOG, logfile_format, s_or_r, file, NULL, iflags, hlink);
807: }
808:
809: void maybe_log_item(struct file_struct *file, int iflags, int itemizing,
810: const char *buf)
811: {
812: int significant_flags = iflags & SIGNIFICANT_ITEM_FLAGS;
813: int see_item = itemizing && (significant_flags || *buf
814: || stdout_format_has_i > 1 || (INFO_GTE(NAME, 2) && stdout_format_has_i));
815: int local_change = iflags & ITEM_LOCAL_CHANGE && significant_flags;
816: if (am_server) {
817: if (logfile_name && !dry_run && see_item
818: && (significant_flags || logfile_format_has_i))
819: log_item(FLOG, file, iflags, buf);
820: } else if (see_item || local_change || *buf
821: || (S_ISDIR(file->mode) && significant_flags)) {
822: enum logcode code = significant_flags || logfile_format_has_i ? FINFO : FCLIENT;
823: log_item(code, file, iflags, buf);
824: }
825: }
826:
827: void log_delete(const char *fname, int mode)
828: {
829: static struct {
830: union file_extras ex[4]; /* just in case... */
831: struct file_struct file;
832: } x; /* Zero-initialized due to static declaration. */
833: int len = strlen(fname);
834: const char *fmt;
835:
836: x.file.mode = mode;
837:
838: if (am_server && protocol_version >= 29 && len < MAXPATHLEN) {
839: if (S_ISDIR(mode))
840: len++; /* directories include trailing null */
841: send_msg(MSG_DELETED, fname, len, am_generator);
842: } else if (!INFO_GTE(DEL, 1) && !stdout_format)
843: ;
844: else {
845: fmt = stdout_format_has_o_or_i ? stdout_format : "deleting %n";
846: log_formatted(FCLIENT, fmt, "del.", &x.file, fname, ITEM_DELETED, NULL);
847: }
848:
849: if (!logfile_name || dry_run || !logfile_format)
850: return;
851:
852: fmt = logfile_format_has_o_or_i ? logfile_format : "deleting %n";
853: log_formatted(FLOG, fmt, "del.", &x.file, fname, ITEM_DELETED, NULL);
854: }
855:
856: /*
857: * Called when the transfer is interrupted for some reason.
858: *
859: * Code is one of the RERR_* codes from errcode.h, or terminating
860: * successfully.
861: */
862: void log_exit(int code, const char *file, int line)
863: {
864: if (code == 0) {
865: rprintf(FLOG,"sent %s bytes received %s bytes total size %s\n",
866: big_num(stats.total_written),
867: big_num(stats.total_read),
868: big_num(stats.total_size));
869: } else if (am_server != 2) {
870: const char *name;
871:
872: name = rerr_name(code);
873: if (!name)
874: name = "unexplained error";
875:
876: /* VANISHED is not an error, only a warning */
877: if (code == RERR_VANISHED) {
878: rprintf(FWARNING, "rsync warning: %s (code %d) at %s(%d) [%s=%s]\n",
879: name, code, file, line, who_am_i(), RSYNC_VERSION);
880: } else {
881: rprintf(FERROR, "rsync error: %s (code %d) at %s(%d) [%s=%s]\n",
882: name, code, file, line, who_am_i(), RSYNC_VERSION);
883: }
884: }
885: }
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