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Commit | Line | Data |
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6dbe3af9 KZ |
1 | /* |
2 | * Copyright (c) 1983, 1993 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
7eda085c | 32 | * |
b50945d4 | 33 | * 1999-02-22 Arkadiusz MiĆkiewicz <misiek@pld.ORG.PL> |
7eda085c KZ |
34 | * - added Native Language Support |
35 | * Sun Mar 21 1999 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> | |
36 | * - fixed strerr(errno) in gettext calls | |
6dbe3af9 KZ |
37 | */ |
38 | ||
6dbe3af9 | 39 | #include <errno.h> |
047e2888 | 40 | #include <limits.h> |
6dbe3af9 KZ |
41 | #include <unistd.h> |
42 | #include <stdlib.h> | |
5ec85227 | 43 | #include <sys/time.h> |
6dbe3af9 KZ |
44 | #include <stdio.h> |
45 | #include <ctype.h> | |
46 | #include <string.h> | |
7eda085c KZ |
47 | #include <sys/types.h> |
48 | #include <sys/socket.h> | |
66ee8158 | 49 | #include <sys/un.h> |
912d6b98 WJE |
50 | #include <arpa/inet.h> |
51 | #include <netdb.h> | |
b363e86d | 52 | #include <getopt.h> |
019b9702 | 53 | #include <pwd.h> |
27a9eb53 | 54 | #include <signal.h> |
eaac9f88 | 55 | #include <sys/uio.h> |
b363e86d | 56 | |
633493be | 57 | #include "all-io.h" |
b363e86d | 58 | #include "c.h" |
c05a80ca | 59 | #include "closestream.h" |
7eda085c | 60 | #include "nls.h" |
52a49e9a | 61 | #include "pathnames.h" |
b363e86d | 62 | #include "strutils.h" |
4b670c01 | 63 | #include "xalloc.h" |
4299ed1c KZ |
64 | #include "strv.h" |
65 | #include "list.h" | |
6dbe3af9 KZ |
66 | |
67 | #define SYSLOG_NAMES | |
68 | #include <syslog.h> | |
69 | ||
ebff016a | 70 | #ifdef HAVE_LIBSYSTEMD |
d77dc29e | 71 | # include <systemd/sd-daemon.h> |
4b670c01 SK |
72 | # include <systemd/sd-journal.h> |
73 | #endif | |
74 | ||
87ee2658 ST |
75 | #ifdef HAVE_SYS_TIMEX_H |
76 | # include <sys/timex.h> | |
77 | #endif | |
78 | ||
68265d07 SK |
79 | enum { |
80 | TYPE_UDP = (1 << 1), | |
81 | TYPE_TCP = (1 << 2), | |
82 | ALL_TYPES = TYPE_UDP | TYPE_TCP | |
83 | }; | |
84 | ||
d77dc29e SK |
85 | enum { |
86 | AF_UNIX_ERRORS_OFF = 0, | |
87 | AF_UNIX_ERRORS_ON, | |
88 | AF_UNIX_ERRORS_AUTO | |
89 | }; | |
90 | ||
98920f80 | 91 | enum { |
4b670c01 | 92 | OPT_PRIO_PREFIX = CHAR_MAX + 1, |
4de2e8a0 SK |
93 | OPT_JOURNALD, |
94 | OPT_RFC3164, | |
d77dc29e | 95 | OPT_RFC5424, |
3f51c10b | 96 | OPT_SOCKET_ERRORS, |
55f5bc66 | 97 | OPT_MSGID, |
fd343a05 | 98 | OPT_NOACT, |
b6b67955 | 99 | OPT_ID, |
4299ed1c KZ |
100 | OPT_STRUCTURED_DATA_ID, |
101 | OPT_STRUCTURED_DATA_PARAM, | |
b6b67955 | 102 | OPT_OCTET_COUNT |
98920f80 DJ |
103 | }; |
104 | ||
4299ed1c KZ |
105 | /* rfc5424 structured data */ |
106 | struct structured_data { | |
107 | char *id; /* SD-ID */ | |
108 | char **params; /* array with SD-PARAMs */ | |
109 | ||
110 | struct list_head sds; | |
111 | }; | |
112 | ||
cfa77d26 SK |
113 | struct logger_ctl { |
114 | int fd; | |
cfa77d26 | 115 | int pri; |
59c6ac0b | 116 | pid_t pid; /* zero when unwanted */ |
2b3f40c5 | 117 | char *hdr; /* the syslog header (based on protocol) */ |
c8598d8a | 118 | char const *tag; |
55f5bc66 | 119 | char *msgid; |
c95d3209 | 120 | char *unix_socket; /* -u <path> or default to _PATH_DEVLOG */ |
c68a1cb4 SK |
121 | char *server; |
122 | char *port; | |
123 | int socket_type; | |
f68b8aa7 | 124 | size_t max_message_size; |
4299ed1c KZ |
125 | struct list_head user_sds; /* user defined rfc5424 structured data */ |
126 | struct list_head reserved_sds; /* standard rfc5424 structured data */ | |
127 | ||
2b3f40c5 | 128 | void (*syslogfp)(struct logger_ctl *ctl); |
4299ed1c | 129 | |
4de2e8a0 | 130 | unsigned int |
d77dc29e | 131 | unix_socket_errors:1, /* whether to report or not errors */ |
fd343a05 | 132 | noact:1, /* do not write to sockets */ |
9e930041 | 133 | prio_prefix:1, /* read priority from input */ |
d77dc29e SK |
134 | stderr_printout:1, /* output message to stderr */ |
135 | rfc5424_time:1, /* include time stamp */ | |
136 | rfc5424_tq:1, /* include time quality markup */ | |
ae6846b8 | 137 | rfc5424_host:1, /* include hostname */ |
b6b67955 AB |
138 | skip_empty_lines:1, /* do not send empty lines when processing files */ |
139 | octet_count:1; /* use RFC6587 octet counting */ | |
cfa77d26 SK |
140 | }; |
141 | ||
e92d55e6 | 142 | #define is_connected(_ctl) ((_ctl)->fd >= 0) |
caf6ac6e KZ |
143 | static void logger_reopen(struct logger_ctl *ctl); |
144 | ||
ef5fb280 KZ |
145 | /* |
146 | * For tests we want to be able to control datetime outputs | |
147 | */ | |
148 | #ifdef TEST_LOGGER | |
149 | static inline int logger_gettimeofday(struct timeval *tv, struct timezone *tz) | |
150 | { | |
151 | char *str = getenv("LOGGER_TEST_TIMEOFDAY"); | |
152 | uintmax_t sec, usec; | |
153 | ||
154 | if (str && sscanf(str, "%ju.%ju", &sec, &usec) == 2) { | |
155 | tv->tv_sec = sec; | |
156 | tv->tv_usec = usec; | |
98e90a49 | 157 | return tv->tv_sec >= 0 && tv->tv_usec >= 0 ? 0 : -EINVAL; |
ef5fb280 KZ |
158 | } |
159 | ||
160 | return gettimeofday(tv, tz); | |
161 | } | |
162 | ||
163 | static inline char *logger_xgethostname(void) | |
164 | { | |
165 | char *str = getenv("LOGGER_TEST_HOSTNAME"); | |
166 | return str ? xstrdup(str) : xgethostname(); | |
167 | } | |
168 | ||
169 | static inline pid_t logger_getpid(void) | |
170 | { | |
171 | char *str = getenv("LOGGER_TEST_GETPID"); | |
172 | unsigned int pid; | |
173 | ||
174 | if (str && sscanf(str, "%u", &pid) == 1) | |
175 | return pid; | |
176 | return getpid(); | |
177 | } | |
178 | ||
179 | ||
180 | #undef HAVE_NTP_GETTIME /* force to default non-NTP */ | |
181 | ||
182 | #else /* !TEST_LOGGER */ | |
183 | # define logger_gettimeofday(x, y) gettimeofday(x, y) | |
184 | # define logger_xgethostname xgethostname | |
185 | # define logger_getpid getpid | |
186 | #endif | |
187 | ||
188 | ||
f5fceb40 | 189 | static int decode(const char *name, const CODE *codetab) |
82054b1d | 190 | { |
f5fceb40 | 191 | register const CODE *c; |
82054b1d | 192 | |
4d7d1af6 SK |
193 | if (name == NULL || *name == '\0') |
194 | return -1; | |
195 | if (isdigit(*name)) { | |
196 | int num; | |
197 | char *end = NULL; | |
198 | ||
8d341322 | 199 | errno = 0; |
4d7d1af6 SK |
200 | num = strtol(name, &end, 10); |
201 | if (errno || name == end || (end && *end)) | |
202 | return -1; | |
203 | for (c = codetab; c->c_name; c++) | |
204 | if (num == c->c_val) | |
205 | return num; | |
206 | return -1; | |
207 | } | |
82054b1d DR |
208 | for (c = codetab; c->c_name; c++) |
209 | if (!strcasecmp(name, c->c_name)) | |
210 | return (c->c_val); | |
211 | ||
212 | return -1; | |
213 | } | |
214 | ||
215 | static int pencode(char *s) | |
216 | { | |
2e0fd22d SK |
217 | int facility, level; |
218 | char *separator; | |
219 | ||
220 | separator = strchr(s, '.'); | |
221 | if (separator) { | |
222 | *separator = '\0'; | |
223 | facility = decode(s, facilitynames); | |
224 | if (facility < 0) | |
225 | errx(EXIT_FAILURE, _("unknown facility name: %s"), s); | |
226 | s = ++separator; | |
227 | } else | |
228 | facility = LOG_USER; | |
229 | level = decode(s, prioritynames); | |
230 | if (level < 0) | |
231 | errx(EXIT_FAILURE, _("unknown priority name: %s"), s); | |
9a13f968 SK |
232 | if (facility == LOG_KERN) |
233 | facility = LOG_USER; /* kern is forbidden */ | |
2e0fd22d | 234 | return ((level & LOG_PRIMASK) | (facility & LOG_FACMASK)); |
82054b1d DR |
235 | } |
236 | ||
fc20393c | 237 | static int unix_socket(struct logger_ctl *ctl, const char *path, int *socket_type) |
fe6999da | 238 | { |
fc20393c | 239 | int fd, i, type = -1; |
fe6999da | 240 | static struct sockaddr_un s_addr; /* AF_UNIX address of local logger */ |
7eda085c | 241 | |
68265d07 SK |
242 | if (strlen(path) >= sizeof(s_addr.sun_path)) |
243 | errx(EXIT_FAILURE, _("openlog %s: pathname too long"), path); | |
7eda085c | 244 | |
fe6999da | 245 | s_addr.sun_family = AF_UNIX; |
68265d07 SK |
246 | strcpy(s_addr.sun_path, path); |
247 | ||
248 | for (i = 2; i; i--) { | |
249 | int st = -1; | |
49999d6a | 250 | |
fc20393c | 251 | if (i == 2 && *socket_type & TYPE_UDP) { |
68265d07 | 252 | st = SOCK_DGRAM; |
fc20393c KZ |
253 | type = TYPE_UDP; |
254 | } | |
255 | if (i == 1 && *socket_type & TYPE_TCP) { | |
68265d07 | 256 | st = SOCK_STREAM; |
fc20393c KZ |
257 | type = TYPE_TCP; |
258 | } | |
68265d07 SK |
259 | if (st == -1 || (fd = socket(AF_UNIX, st, 0)) == -1) |
260 | continue; | |
fe6999da SK |
261 | if (connect(fd, (struct sockaddr *)&s_addr, sizeof(s_addr)) == -1) { |
262 | close(fd); | |
68265d07 | 263 | continue; |
fe6999da | 264 | } |
68265d07 | 265 | break; |
fe6999da | 266 | } |
7eda085c | 267 | |
d77dc29e SK |
268 | if (i == 0) { |
269 | if (ctl->unix_socket_errors) | |
270 | err(EXIT_FAILURE, _("socket %s"), path); | |
28bad822 | 271 | |
e92d55e6 | 272 | /* write_output() will try to reconnect */ |
28bad822 | 273 | return -1; |
d77dc29e | 274 | } |
fc20393c KZ |
275 | |
276 | /* replace ALL_TYPES with the real TYPE_* */ | |
277 | if (type > 0 && type != *socket_type) | |
278 | *socket_type = type; | |
fe6999da | 279 | return fd; |
7eda085c KZ |
280 | } |
281 | ||
fc20393c | 282 | static int inet_socket(const char *servername, const char *port, int *socket_type) |
68265d07 | 283 | { |
fc20393c | 284 | int fd, errcode, i, type = -1; |
24f4db69 | 285 | struct addrinfo hints, *res; |
68265d07 SK |
286 | const char *p = port; |
287 | ||
288 | for (i = 2; i; i--) { | |
289 | memset(&hints, 0, sizeof(hints)); | |
fc20393c | 290 | if (i == 2 && *socket_type & TYPE_UDP) { |
68265d07 | 291 | hints.ai_socktype = SOCK_DGRAM; |
fc20393c | 292 | type = TYPE_UDP; |
68265d07 SK |
293 | if (port == NULL) |
294 | p = "syslog"; | |
295 | } | |
fc20393c | 296 | if (i == 1 && *socket_type & TYPE_TCP) { |
68265d07 | 297 | hints.ai_socktype = SOCK_STREAM; |
fc20393c | 298 | type = TYPE_TCP; |
68265d07 SK |
299 | if (port == NULL) |
300 | p = "syslog-conn"; | |
301 | } | |
302 | if (hints.ai_socktype == 0) | |
303 | continue; | |
304 | hints.ai_family = AF_UNSPEC; | |
305 | errcode = getaddrinfo(servername, p, &hints, &res); | |
306 | if (errcode != 0) | |
4ce393f4 | 307 | errx(EXIT_FAILURE, _("failed to resolve name %s port %s: %s"), |
68265d07 SK |
308 | servername, p, gai_strerror(errcode)); |
309 | if ((fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) == -1) { | |
310 | freeaddrinfo(res); | |
311 | continue; | |
312 | } | |
313 | if (connect(fd, res->ai_addr, res->ai_addrlen) == -1) { | |
314 | freeaddrinfo(res); | |
315 | close(fd); | |
316 | continue; | |
317 | } | |
24f4db69 | 318 | |
68265d07 SK |
319 | freeaddrinfo(res); |
320 | break; | |
321 | } | |
912d6b98 | 322 | |
68265d07 | 323 | if (i == 0) |
4ce393f4 | 324 | errx(EXIT_FAILURE, _("failed to connect to %s port %s"), servername, p); |
49999d6a | 325 | |
fc20393c KZ |
326 | /* replace ALL_TYPES with the real TYPE_* */ |
327 | if (type > 0 && type != *socket_type) | |
328 | *socket_type = type; | |
912d6b98 WJE |
329 | return fd; |
330 | } | |
68265d07 | 331 | |
ebff016a | 332 | #ifdef HAVE_LIBSYSTEMD |
fd343a05 | 333 | static int journald_entry(struct logger_ctl *ctl, FILE *fp) |
4b670c01 SK |
334 | { |
335 | struct iovec *iovec; | |
336 | char *buf = NULL; | |
337 | ssize_t sz; | |
fd343a05 | 338 | int n, lines, vectors = 8, ret = 0; |
4b670c01 SK |
339 | size_t dummy = 0; |
340 | ||
341 | iovec = xmalloc(vectors * sizeof(struct iovec)); | |
342 | for (lines = 0; /* nothing */ ; lines++) { | |
343 | buf = NULL; | |
344 | sz = getline(&buf, &dummy, fp); | |
f1f5f21e SK |
345 | if (sz == -1 || |
346 | (sz = rtrim_whitespace((unsigned char *) buf)) == 0) { | |
4e5411f6 | 347 | free(buf); |
4b670c01 | 348 | break; |
4e5411f6 | 349 | } |
4b670c01 SK |
350 | if (lines == vectors) { |
351 | vectors *= 2; | |
047e2888 SK |
352 | if (IOV_MAX < vectors) |
353 | errx(EXIT_FAILURE, _("maximum input lines (%d) exceeded"), IOV_MAX); | |
4b670c01 SK |
354 | iovec = xrealloc(iovec, vectors * sizeof(struct iovec)); |
355 | } | |
356 | iovec[lines].iov_base = buf; | |
357 | iovec[lines].iov_len = sz; | |
358 | } | |
fd343a05 KZ |
359 | |
360 | if (!ctl->noact) | |
361 | ret = sd_journal_sendv(iovec, lines); | |
362 | if (ctl->stderr_printout) { | |
363 | for (n = 0; n < lines; n++) | |
364 | fprintf(stderr, "%s\n", (char *) iovec[n].iov_base); | |
365 | } | |
4b670c01 SK |
366 | for (n = 0; n < lines; n++) |
367 | free(iovec[n].iov_base); | |
368 | free(iovec); | |
369 | return ret; | |
370 | } | |
371 | #endif | |
372 | ||
c8598d8a | 373 | static char const *xgetlogin(void) |
019b9702 | 374 | { |
c8598d8a | 375 | char const *cp; |
019b9702 SK |
376 | struct passwd *pw; |
377 | ||
378 | if (!(cp = getlogin()) || !*cp) | |
379 | cp = (pw = getpwuid(geteuid()))? pw->pw_name : "<someone>"; | |
380 | return cp; | |
381 | } | |
382 | ||
3070ca77 RG |
383 | /* this creates a timestamp based on current time according to the |
384 | * fine rules of RFC3164, most importantly it ensures in a portable | |
385 | * way that the month day is correctly written (with a SP instead | |
386 | * of a leading 0). The function uses a static buffer which is | |
387 | * overwritten on the next call (just like ctime() does). | |
388 | */ | |
c8598d8a | 389 | static char const *rfc3164_current_time(void) |
3070ca77 RG |
390 | { |
391 | static char time[32]; | |
392 | struct timeval tv; | |
393 | struct tm *tm; | |
c8598d8a | 394 | static char const * const monthnames[] = { |
9a13f968 SK |
395 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", |
396 | "Sep", "Oct", "Nov", "Dec" | |
397 | }; | |
3070ca77 | 398 | |
ef5fb280 | 399 | logger_gettimeofday(&tv, NULL); |
3070ca77 RG |
400 | tm = localtime(&tv.tv_sec); |
401 | snprintf(time, sizeof(time),"%s %2d %2.2d:%2.2d:%2.2d", | |
402 | monthnames[tm->tm_mon], tm->tm_mday, | |
0f1c825b | 403 | tm->tm_hour, tm->tm_min, tm->tm_sec); |
3070ca77 RG |
404 | return time; |
405 | } | |
406 | ||
17c8aa1d | 407 | #define next_iovec(ary, idx) __extension__ ({ \ |
b9710f1f | 408 | assert(ARRAY_SIZE(ary) > (size_t)idx); \ |
17c8aa1d KZ |
409 | assert(idx >= 0); \ |
410 | &ary[idx++]; \ | |
411 | }) | |
412 | ||
413 | #define iovec_add_string(ary, idx, str, len) \ | |
414 | do { \ | |
415 | struct iovec *v = next_iovec(ary, idx); \ | |
416 | v->iov_base = (void *) str; \ | |
417 | v->iov_len = len ? len : strlen(str); \ | |
418 | } while (0) | |
419 | ||
420 | #define iovec_memcmp(ary, idx, str, len) \ | |
421 | memcmp((ary)[(idx) - 1].iov_base, str, len) | |
422 | ||
940a14a3 | 423 | /* writes generated buffer to desired destination. For TCP syslog, |
b6b67955 AB |
424 | * we use RFC6587 octet-stuffing (unless octet-counting is selected). |
425 | * This is not great, but doing full blown RFC5425 (TLS) looks like | |
426 | * it is too much for the logger utility. If octet-counting is | |
427 | * selected, we use that. | |
940a14a3 | 428 | */ |
caf6ac6e | 429 | static void write_output(struct logger_ctl *ctl, const char *const msg) |
4be84306 | 430 | { |
17c8aa1d KZ |
431 | struct iovec iov[4]; |
432 | int iovlen = 0; | |
433 | char *octet = NULL; | |
434 | ||
e92d55e6 KZ |
435 | /* initial connect failed? */ |
436 | if (!ctl->noact && !is_connected(ctl)) | |
437 | logger_reopen(ctl); | |
438 | ||
17c8aa1d KZ |
439 | /* 1) octen count */ |
440 | if (ctl->octet_count) { | |
441 | size_t len = xasprintf(&octet, "%zu ", strlen(ctl->hdr) + strlen(msg)); | |
442 | iovec_add_string(iov, iovlen, octet, len); | |
443 | } | |
444 | ||
445 | /* 2) header */ | |
446 | iovec_add_string(iov, iovlen, ctl->hdr, 0); | |
447 | ||
448 | /* 3) message */ | |
449 | iovec_add_string(iov, iovlen, msg, 0); | |
fd343a05 | 450 | |
e92d55e6 | 451 | if (!ctl->noact && is_connected(ctl)) { |
2ec100a1 | 452 | struct msghdr message = { 0 }; |
4199e989 | 453 | #ifdef SCM_CREDENTIALS |
27a9eb53 KZ |
454 | struct cmsghdr *cmhp; |
455 | struct ucred *cred; | |
456 | union { | |
457 | struct cmsghdr cmh; | |
458 | char control[CMSG_SPACE(sizeof(struct ucred))]; | |
459 | } cbuf; | |
4199e989 | 460 | #endif |
17c8aa1d KZ |
461 | |
462 | /* 4) add extra \n to make sure message is terminated */ | |
463 | if ((ctl->socket_type == TYPE_TCP) && !ctl->octet_count) | |
464 | iovec_add_string(iov, iovlen, "\n", 1); | |
94a28496 | 465 | |
2ec100a1 SK |
466 | message.msg_iov = iov; |
467 | message.msg_iovlen = iovlen; | |
94a28496 | 468 | |
4199e989 | 469 | #ifdef SCM_CREDENTIALS |
27a9eb53 KZ |
470 | /* syslog/journald may follow local socket credentials rather |
471 | * than in the message PID. If we use --id as root than we can | |
472 | * force kernel to accept another valid PID than the real logger(1) | |
473 | * PID. | |
474 | */ | |
475 | if (ctl->pid && !ctl->server && ctl->pid != getpid() | |
476 | && geteuid() == 0 && kill(ctl->pid, 0) == 0) { | |
477 | ||
2ec100a1 SK |
478 | message.msg_control = cbuf.control; |
479 | message.msg_controllen = CMSG_SPACE(sizeof(struct ucred)); | |
27a9eb53 | 480 | |
2ec100a1 | 481 | cmhp = CMSG_FIRSTHDR(&message); |
27a9eb53 KZ |
482 | cmhp->cmsg_len = CMSG_LEN(sizeof(struct ucred)); |
483 | cmhp->cmsg_level = SOL_SOCKET; | |
484 | cmhp->cmsg_type = SCM_CREDENTIALS; | |
485 | cred = (struct ucred *) CMSG_DATA(cmhp); | |
486 | ||
487 | cred->pid = ctl->pid; | |
488 | } | |
4199e989 | 489 | #endif |
caf6ac6e KZ |
490 | /* Note that logger(1) maybe executed for long time (as pipe |
491 | * reader) and connection endpoint (syslogd) may be restarted. | |
492 | * | |
493 | * The libc syslog() function reconnects on failed send(). | |
494 | * Let's do the same to be robust. [kzak -- Oct 2017] | |
87ac63c9 KZ |
495 | * |
496 | * MSG_NOSIGNAL is POSIX.1-2008 compatible, but it for example | |
497 | * no suported by apple-darwin15.6.0. | |
caf6ac6e | 498 | */ |
87ac63c9 KZ |
499 | #ifndef MSG_NOSIGNAL |
500 | # define MSG_NOSIGNAL 0 | |
501 | #endif | |
caf6ac6e KZ |
502 | if (sendmsg(ctl->fd, &message, MSG_NOSIGNAL) < 0) { |
503 | logger_reopen(ctl); | |
504 | if (sendmsg(ctl->fd, &message, MSG_NOSIGNAL) < 0) | |
505 | warn(_("send message failed")); | |
506 | } | |
fd343a05 | 507 | } |
17c8aa1d KZ |
508 | |
509 | if (ctl->stderr_printout) { | |
510 | /* make sure it's terminated for stderr */ | |
511 | if (iovec_memcmp(iov, iovlen, "\n", 1) != 0) | |
512 | iovec_add_string(iov, iovlen, "\n", 1); | |
513 | ||
514 | ignore_result( writev(STDERR_FILENO, iov, iovlen) ); | |
515 | } | |
516 | ||
517 | free(octet); | |
4be84306 RG |
518 | } |
519 | ||
d5f93061 | 520 | #define NILVALUE "-" |
2b3f40c5 | 521 | static void syslog_rfc3164_header(struct logger_ctl *const ctl) |
195c3603 | 522 | { |
d5f93061 | 523 | char pid[30], *hostname; |
d8b616c2 | 524 | |
77c3bd5b | 525 | *pid = '\0'; |
59c6ac0b KZ |
526 | if (ctl->pid) |
527 | snprintf(pid, sizeof(pid), "[%d]", ctl->pid); | |
852feb72 | 528 | |
ef5fb280 | 529 | if ((hostname = logger_xgethostname())) { |
d5f93061 SK |
530 | char *dot = strchr(hostname, '.'); |
531 | if (dot) | |
532 | *dot = '\0'; | |
533 | } else | |
534 | hostname = xstrdup(NILVALUE); | |
852feb72 | 535 | |
2b3f40c5 RG |
536 | xasprintf(&ctl->hdr, "<%d>%.15s %s %.200s%s: ", |
537 | ctl->pri, rfc3164_current_time(), hostname, ctl->tag, pid); | |
852feb72 KZ |
538 | |
539 | free(hostname); | |
7eda085c KZ |
540 | } |
541 | ||
4299ed1c KZ |
542 | static inline struct list_head *get_user_structured_data(struct logger_ctl *ctl) |
543 | { | |
544 | return &ctl->user_sds; | |
545 | } | |
546 | ||
547 | static inline struct list_head *get_reserved_structured_data(struct logger_ctl *ctl) | |
548 | { | |
549 | return &ctl->reserved_sds; | |
550 | } | |
551 | ||
552 | static int has_structured_data_id(struct list_head *ls, const char *id) | |
553 | { | |
554 | struct list_head *p; | |
555 | ||
556 | if (!ls || list_empty(ls)) | |
557 | return 0; | |
558 | ||
559 | list_for_each(p, ls) { | |
560 | struct structured_data *sd = list_entry(p, struct structured_data, sds); | |
561 | if (sd->id && strcmp(sd->id, id) == 0) | |
562 | return 1; | |
563 | } | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static void add_structured_data_id(struct list_head *ls, const char *id) | |
569 | { | |
570 | struct structured_data *sd; | |
571 | ||
572 | assert(id); | |
573 | ||
574 | if (has_structured_data_id(ls, id)) | |
575 | errx(EXIT_FAILURE, _("structured data ID '%s' is not unique"), id); | |
576 | ||
577 | sd = xcalloc(1, sizeof(*sd)); | |
578 | INIT_LIST_HEAD(&sd->sds); | |
579 | sd->id = xstrdup(id); | |
580 | ||
581 | list_add_tail(&sd->sds, ls); | |
582 | } | |
583 | ||
584 | static void add_structured_data_param(struct list_head *ls, const char *param) | |
585 | { | |
586 | struct structured_data *sd; | |
587 | ||
588 | if (list_empty(ls)) | |
426cdc0a | 589 | errx(EXIT_FAILURE, _("--sd-id was not specified for --sd-param %s"), param); |
4299ed1c KZ |
590 | |
591 | assert(param); | |
592 | ||
593 | sd = list_last_entry(ls, struct structured_data, sds); | |
594 | ||
595 | if (strv_extend(&sd->params, param)) | |
596 | err_oom(); | |
597 | } | |
598 | ||
599 | static void add_structured_data_paramf(struct list_head *ls, const char *fmt, ...) | |
600 | { | |
601 | struct structured_data *sd; | |
602 | va_list ap; | |
603 | int x; | |
604 | ||
605 | assert(!list_empty(ls)); | |
606 | assert(fmt); | |
607 | ||
608 | sd = list_last_entry(ls, struct structured_data, sds); | |
609 | va_start(ap, fmt); | |
610 | x = strv_extendv(&sd->params, fmt, ap); | |
611 | va_end(ap); | |
612 | ||
613 | if (x) | |
614 | err_oom(); | |
615 | } | |
616 | ||
617 | static char *strdup_structured_data(struct structured_data *sd) | |
618 | { | |
619 | char *res, *tmp; | |
620 | ||
621 | if (strv_isempty(sd->params)) | |
622 | return NULL; | |
623 | ||
624 | xasprintf(&res, "[%s %s]", sd->id, | |
625 | (tmp = strv_join(sd->params, " "))); | |
626 | free(tmp); | |
627 | return res; | |
628 | } | |
629 | ||
630 | static char *strdup_structured_data_list(struct list_head *ls) | |
631 | { | |
632 | struct list_head *p; | |
633 | char *res = NULL; | |
634 | ||
635 | list_for_each(p, ls) { | |
636 | struct structured_data *sd = list_entry(p, struct structured_data, sds); | |
637 | char *one = strdup_structured_data(sd); | |
638 | char *tmp = res; | |
639 | ||
640 | if (!one) | |
641 | continue; | |
642 | res = strappend(tmp, one); | |
643 | free(tmp); | |
644 | free(one); | |
645 | } | |
646 | ||
647 | return res; | |
648 | } | |
649 | ||
650 | static char *get_structured_data_string(struct logger_ctl *ctl) | |
651 | { | |
652 | char *sys = NULL, *usr = NULL, *res; | |
653 | ||
654 | if (!list_empty(&ctl->reserved_sds)) | |
655 | sys = strdup_structured_data_list(&ctl->reserved_sds); | |
656 | if (!list_empty(&ctl->user_sds)) | |
657 | usr = strdup_structured_data_list(&ctl->user_sds); | |
658 | ||
659 | if (sys && usr) { | |
660 | res = strappend(sys, usr); | |
661 | free(sys); | |
662 | free(usr); | |
663 | } else | |
664 | res = sys ? sys : usr; | |
665 | ||
666 | return res; | |
667 | } | |
668 | ||
669 | static int valid_structured_data_param(const char *str) | |
670 | { | |
671 | char *eq = strchr(str, '='), | |
672 | *qm1 = strchr(str, '"'), | |
673 | *qm2 = qm1 ? strchr(qm1 + 1, '"') : NULL; | |
674 | ||
675 | if (!eq || !qm1 || !qm2) /* something is missing */ | |
676 | return 0; | |
677 | ||
678 | /* foo="bar" */ | |
679 | return eq > str && eq < qm1 && eq + 1 == qm1 && qm1 < qm2 && *(qm2 + 1) == '\0'; | |
680 | } | |
681 | ||
682 | /* SD-ID format: | |
683 | * name@<private enterprise number>, e.g., "ourSDID@32473" | |
684 | */ | |
685 | static int valid_structured_data_id(const char *str) | |
686 | { | |
687 | char *at = strchr(str, '@'); | |
688 | const char *p; | |
689 | ||
690 | /* standardized IDs without @<digits> */ | |
691 | if (!at && (strcmp(str, "timeQuality") == 0 || | |
692 | strcmp(str, "origin") == 0 || | |
693 | strcmp(str, "meta") == 0)) | |
694 | return 1; | |
695 | ||
696 | if (!at || at == str || !*(at + 1)) | |
697 | return 0; | |
6d8a31f6 KZ |
698 | |
699 | /* <digits> or <digits>.<digits>[...] */ | |
700 | for (p = at + 1; p && *p; p++) { | |
701 | const char *end; | |
702 | ||
703 | if (isdigit_strend(p, &end)) | |
704 | break; /* only digits in the string */ | |
705 | ||
706 | if (end == NULL || end == p || | |
707 | *end != '.' || *(end + 1) == '\0') | |
708 | return 0; | |
709 | p = end; | |
710 | } | |
4299ed1c KZ |
711 | |
712 | /* check for forbidden chars in the <name> */ | |
713 | for (p = str; p < at; p++) { | |
714 | if (*p == '[' || *p == '=' || *p == '"' || *p == '@') | |
715 | return 0; | |
bae57b5a | 716 | if (isblank((unsigned char) *p) || iscntrl((unsigned char) *p)) |
4299ed1c KZ |
717 | return 0; |
718 | } | |
719 | return 1; | |
720 | } | |
721 | ||
722 | ||
723 | /* Some field mappings may be controversial, thus I give the reason | |
4826184b RG |
724 | * why this specific mapping was used: |
725 | * APP-NAME <-- tag | |
726 | * Some may argue that "logger" is a better fit, but we think | |
727 | * this is better inline of what other implementations do. In | |
728 | * rsyslog, for example, the TAG value is populated from APP-NAME. | |
729 | * PROCID <-- pid | |
730 | * This is a relatively straightforward interpretation from | |
731 | * RFC5424, sect. 6.2.6. | |
55f5bc66 | 732 | * MSGID <-- msgid (from --msgid) |
4826184b RG |
733 | * One may argue that the string "logger" would be better suited |
734 | * here so that a receiver can identify the sender process. | |
735 | * However, this does not sound like a good match to RFC5424, | |
55f5bc66 | 736 | * sect. 6.2.7. |
4826184b RG |
737 | * Note that appendix A.1 of RFC5424 does not provide clear guidance |
738 | * of how these fields should be used. This is the case because the | |
739 | * IETF working group couldn't arrive at a clear agreement when we | |
740 | * specified RFC5424. The rest of the field mappings should be | |
741 | * pretty clear from RFC5424. -- Rainer Gerhards, 2015-03-10 | |
742 | */ | |
2b3f40c5 | 743 | static void syslog_rfc5424_header(struct logger_ctl *const ctl) |
4de2e8a0 | 744 | { |
9a13f968 SK |
745 | char *time; |
746 | char *hostname; | |
c8598d8a | 747 | char const *app_name = ctl->tag; |
9a13f968 SK |
748 | char *procid; |
749 | char *const msgid = xstrdup(ctl->msgid ? ctl->msgid : NILVALUE); | |
4299ed1c KZ |
750 | char *structured = NULL; |
751 | struct list_head *sd; | |
9a13f968 | 752 | |
4de2e8a0 | 753 | if (ctl->rfc5424_time) { |
4826184b RG |
754 | struct timeval tv; |
755 | struct tm *tm; | |
9a13f968 | 756 | |
ef5fb280 | 757 | logger_gettimeofday(&tv, NULL); |
4de2e8a0 | 758 | if ((tm = localtime(&tv.tv_sec)) != NULL) { |
852feb72 | 759 | char fmt[64]; |
2f267611 | 760 | const size_t i = strftime(fmt, sizeof(fmt), |
9a13f968 | 761 | "%Y-%m-%dT%H:%M:%S.%%06u%z ", tm); |
2f267611 | 762 | /* patch TZ info to comply with RFC3339 (we left SP at end) */ |
9a13f968 SK |
763 | fmt[i - 1] = fmt[i - 2]; |
764 | fmt[i - 2] = fmt[i - 3]; | |
765 | fmt[i - 3] = ':'; | |
4826184b | 766 | xasprintf(&time, fmt, tv.tv_usec); |
4de2e8a0 SK |
767 | } else |
768 | err(EXIT_FAILURE, _("localtime() failed")); | |
4826184b | 769 | } else |
7ff6948e | 770 | time = xstrdup(NILVALUE); |
852feb72 | 771 | |
4de2e8a0 | 772 | if (ctl->rfc5424_host) { |
ef5fb280 | 773 | if (!(hostname = logger_xgethostname())) |
d5f93061 | 774 | hostname = xstrdup(NILVALUE); |
4de2e8a0 SK |
775 | /* Arbitrary looking 'if (var < strlen()) checks originate from |
776 | * RFC 5424 - 6 Syslog Message Format definition. */ | |
777 | if (255 < strlen(hostname)) | |
778 | errx(EXIT_FAILURE, _("hostname '%s' is too long"), | |
779 | hostname); | |
4826184b | 780 | } else |
7ff6948e | 781 | hostname = xstrdup(NILVALUE); |
852feb72 | 782 | |
2b3f40c5 RG |
783 | if (48 < strlen(ctl->tag)) |
784 | errx(EXIT_FAILURE, _("tag '%s' is too long"), ctl->tag); | |
852feb72 | 785 | |
59c6ac0b | 786 | if (ctl->pid) |
4826184b RG |
787 | xasprintf(&procid, "%d", ctl->pid); |
788 | else | |
7ff6948e | 789 | procid = xstrdup(NILVALUE); |
4826184b | 790 | |
4299ed1c KZ |
791 | sd = get_reserved_structured_data(ctl); |
792 | ||
9e930041 | 793 | /* time quality structured data (maybe overwritten by --sd-id timeQuality) */ |
4299ed1c KZ |
794 | if (ctl->rfc5424_tq && !has_structured_data_id(sd, "timeQuality")) { |
795 | ||
796 | add_structured_data_id(sd, "timeQuality"); | |
797 | add_structured_data_param(sd, "tzKnown=\"1\""); | |
798 | ||
7d3a07d8 KZ |
799 | #ifdef HAVE_NTP_GETTIME |
800 | struct ntptimeval ntptv; | |
9a13f968 | 801 | |
4299ed1c KZ |
802 | if (ntp_gettime(&ntptv) == TIME_OK) { |
803 | add_structured_data_param(sd, "isSynced=\"1\""); | |
804 | add_structured_data_paramf(sd, "syncAccuracy=\"%ld\"", ntptv.maxerror); | |
805 | } else | |
87ee2658 | 806 | #endif |
4299ed1c KZ |
807 | add_structured_data_paramf(sd, "isSynced=\"0\""); |
808 | } | |
809 | ||
810 | /* convert all structured data to string */ | |
811 | structured = get_structured_data_string(ctl); | |
812 | if (!structured) | |
813 | structured = xstrdup(NILVALUE); | |
852feb72 | 814 | |
4826184b RG |
815 | xasprintf(&ctl->hdr, "<%d>1 %s %s %s %s %s %s ", |
816 | ctl->pri, | |
817 | time, | |
818 | hostname, | |
819 | app_name, | |
820 | procid, | |
821 | msgid, | |
4299ed1c | 822 | structured); |
852feb72 | 823 | |
4826184b | 824 | free(time); |
852feb72 | 825 | free(hostname); |
4826184b RG |
826 | /* app_name points to ctl->tag, do NOT free! */ |
827 | free(procid); | |
828 | free(msgid); | |
4299ed1c | 829 | free(structured); |
4de2e8a0 SK |
830 | } |
831 | ||
eb2306e6 | 832 | static void parse_rfc5424_flags(struct logger_ctl *ctl, char *s) |
4de2e8a0 SK |
833 | { |
834 | char *in, *tok; | |
835 | ||
eb2306e6 | 836 | in = s; |
4de2e8a0 SK |
837 | while ((tok = strtok(in, ","))) { |
838 | in = NULL; | |
839 | if (!strcmp(tok, "notime")) { | |
840 | ctl->rfc5424_time = 0; | |
841 | ctl->rfc5424_tq = 0; | |
842 | } else if (!strcmp(tok, "notq")) | |
843 | ctl->rfc5424_tq = 0; | |
844 | else if (!strcmp(tok, "nohost")) | |
845 | ctl->rfc5424_host = 0; | |
846 | else | |
847 | warnx(_("ignoring unknown option argument: %s"), tok); | |
848 | } | |
849 | } | |
850 | ||
eb2306e6 | 851 | static int parse_unix_socket_errors_flags(char *s) |
d77dc29e | 852 | { |
eb2306e6 | 853 | if (!strcmp(s, "off")) |
d77dc29e | 854 | return AF_UNIX_ERRORS_OFF; |
eb2306e6 | 855 | if (!strcmp(s, "on")) |
d77dc29e | 856 | return AF_UNIX_ERRORS_ON; |
eb2306e6 | 857 | if (!strcmp(s, "auto")) |
d77dc29e | 858 | return AF_UNIX_ERRORS_AUTO; |
eb2306e6 | 859 | warnx(_("invalid argument: %s: using automatic errors"), s); |
d77dc29e SK |
860 | return AF_UNIX_ERRORS_AUTO; |
861 | } | |
862 | ||
2b3f40c5 | 863 | static void syslog_local_header(struct logger_ctl *const ctl) |
cfa77d26 | 864 | { |
3070ca77 | 865 | char pid[32]; |
1d575033 | 866 | |
59c6ac0b KZ |
867 | if (ctl->pid) |
868 | snprintf(pid, sizeof(pid), "[%d]", ctl->pid); | |
1d575033 SK |
869 | else |
870 | pid[0] = '\0'; | |
871 | ||
2b3f40c5 RG |
872 | xasprintf(&ctl->hdr, "<%d>%s %s%s: ", ctl->pri, rfc3164_current_time(), |
873 | ctl->tag, pid); | |
874 | } | |
875 | ||
876 | static void generate_syslog_header(struct logger_ctl *const ctl) | |
877 | { | |
878 | free(ctl->hdr); | |
2d4c226d | 879 | ctl->hdr = NULL; |
2b3f40c5 | 880 | ctl->syslogfp(ctl); |
cfa77d26 SK |
881 | } |
882 | ||
caf6ac6e KZ |
883 | /* just open, nothing else */ |
884 | static void __logger_open(struct logger_ctl *ctl) | |
c68a1cb4 SK |
885 | { |
886 | if (ctl->server) { | |
fc20393c | 887 | ctl->fd = inet_socket(ctl->server, ctl->port, &ctl->socket_type); |
4a8919a4 PP |
888 | } else { |
889 | if (!ctl->unix_socket) | |
890 | ctl->unix_socket = _PATH_DEVLOG; | |
7dc20804 | 891 | |
fc20393c | 892 | ctl->fd = unix_socket(ctl, ctl->unix_socket, &ctl->socket_type); |
4a8919a4 | 893 | } |
caf6ac6e KZ |
894 | } |
895 | ||
896 | /* open and initialize relevant @ctl tuff */ | |
897 | static void logger_open(struct logger_ctl *ctl) | |
898 | { | |
899 | __logger_open(ctl); | |
900 | ||
901 | if (!ctl->syslogfp) | |
902 | ctl->syslogfp = ctl->server ? syslog_rfc5424_header : | |
903 | syslog_local_header; | |
9a13f968 SK |
904 | if (!ctl->tag) |
905 | ctl->tag = xgetlogin(); | |
caf6ac6e | 906 | |
2b3f40c5 | 907 | generate_syslog_header(ctl); |
c68a1cb4 SK |
908 | } |
909 | ||
caf6ac6e KZ |
910 | /* re-open; usually after failed connection */ |
911 | static void logger_reopen(struct logger_ctl *ctl) | |
912 | { | |
913 | if (ctl->fd != -1) | |
914 | close(ctl->fd); | |
915 | ctl->fd = -1; | |
916 | ||
917 | __logger_open(ctl); | |
918 | } | |
919 | ||
920 | static void logger_command_line(struct logger_ctl *ctl, char **argv) | |
c68a1cb4 | 921 | { |
2b3f40c5 RG |
922 | /* note: we never re-generate the syslog header here, even if we |
923 | * generate multiple messages. If so, we think it is the right thing | |
924 | * to do to report them with the same timestamp, as the user actually | |
925 | * intended to send a single message. | |
926 | */ | |
f68b8aa7 | 927 | char *const buf = xmalloc(ctl->max_message_size + 1); |
c68a1cb4 | 928 | char *p = buf; |
f68b8aa7 | 929 | const char *endp = buf + ctl->max_message_size - 1; |
c68a1cb4 SK |
930 | size_t len; |
931 | ||
932 | while (*argv) { | |
933 | len = strlen(*argv); | |
934 | if (endp < p + len && p != buf) { | |
2b3f40c5 | 935 | write_output(ctl, buf); |
c68a1cb4 SK |
936 | p = buf; |
937 | } | |
f68b8aa7 RG |
938 | if (ctl->max_message_size < len) { |
939 | (*argv)[ctl->max_message_size] = '\0'; /* truncate */ | |
2b3f40c5 | 940 | write_output(ctl, *argv++); |
c68a1cb4 SK |
941 | continue; |
942 | } | |
943 | if (p != buf) | |
944 | *p++ = ' '; | |
945 | memmove(p, *argv++, len); | |
946 | *(p += len) = '\0'; | |
947 | } | |
948 | if (p != buf) | |
2b3f40c5 | 949 | write_output(ctl, buf); |
c3dd2ecd | 950 | free(buf); |
c68a1cb4 SK |
951 | } |
952 | ||
953 | static void logger_stdin(struct logger_ctl *ctl) | |
954 | { | |
31fb9453 | 955 | /* note: we re-generate the syslog header for each log message to |
7db029e5 KZ |
956 | * update header timestamps and to reflect possible priority changes. |
957 | * The initial header is generated by logger_open(). | |
958 | */ | |
959 | int has_header = 1; | |
c68a1cb4 | 960 | int default_priority = ctl->pri; |
b9ef27f5 RG |
961 | int last_pri = default_priority; |
962 | size_t max_usrmsg_size = ctl->max_message_size - strlen(ctl->hdr); | |
963 | char *const buf = xmalloc(max_usrmsg_size + 2 + 2); | |
964 | int pri; | |
965 | int c; | |
966 | size_t i; | |
967 | ||
968 | c = getchar(); | |
969 | while (c != EOF) { | |
970 | i = 0; | |
da0788fb SK |
971 | if (ctl->prio_prefix && c == '<') { |
972 | pri = 0; | |
973 | buf[i++] = c; | |
974 | while (isdigit(c = getchar()) && pri <= 191) { | |
975 | buf[i++] = c; | |
976 | pri = pri * 10 + c - '0'; | |
977 | } | |
978 | if (c != EOF && c != '\n') | |
b9ef27f5 | 979 | buf[i++] = c; |
da0788fb SK |
980 | if (c == '>' && 0 <= pri && pri <= 191) { |
981 | /* valid RFC PRI values */ | |
982 | i = 0; | |
983 | if (pri < 8) /* kern facility is forbidden */ | |
984 | pri |= 8; | |
985 | ctl->pri = pri; | |
986 | } else | |
987 | ctl->pri = default_priority; | |
988 | ||
989 | if (ctl->pri != last_pri) { | |
990 | has_header = 0; | |
991 | max_usrmsg_size = | |
992 | ctl->max_message_size - strlen(ctl->hdr); | |
993 | last_pri = ctl->pri; | |
b9ef27f5 | 994 | } |
da0788fb SK |
995 | if (c != EOF && c != '\n') |
996 | c = getchar(); | |
b9ef27f5 RG |
997 | } |
998 | ||
999 | while (c != EOF && c != '\n' && i < max_usrmsg_size) { | |
1000 | buf[i++] = c; | |
1001 | c = getchar(); | |
1002 | } | |
1003 | buf[i] = '\0'; | |
1004 | ||
7db029e5 KZ |
1005 | if (i > 0 || !ctl->skip_empty_lines) { |
1006 | if (!has_header) | |
1007 | generate_syslog_header(ctl); | |
ae6846b8 | 1008 | write_output(ctl, buf); |
7db029e5 KZ |
1009 | has_header = 0; |
1010 | } | |
b9ef27f5 | 1011 | |
9a13f968 | 1012 | if (c == '\n') /* discard line terminator */ |
b9ef27f5 | 1013 | c = getchar(); |
c68a1cb4 | 1014 | } |
8b318eb2 KZ |
1015 | |
1016 | free(buf); | |
c68a1cb4 SK |
1017 | } |
1018 | ||
46ee14df | 1019 | static void logger_close(const struct logger_ctl *ctl) |
c68a1cb4 | 1020 | { |
9b83e7a4 | 1021 | if (ctl->fd != -1 && close(ctl->fd) != 0) |
1d575033 | 1022 | err(EXIT_FAILURE, _("close failed")); |
2b3f40c5 | 1023 | free(ctl->hdr); |
c68a1cb4 SK |
1024 | } |
1025 | ||
86be6a32 | 1026 | static void __attribute__((__noreturn__)) usage(void) |
b363e86d | 1027 | { |
86be6a32 | 1028 | FILE *out = stdout; |
925aa9e8 | 1029 | fputs(USAGE_HEADER, out); |
4ce393f4 | 1030 | fprintf(out, _(" %s [options] [<message>]\n"), program_invocation_short_name); |
2da49186 | 1031 | |
451dbcfa BS |
1032 | fputs(USAGE_SEPARATOR, out); |
1033 | fputs(_("Enter messages into the system log.\n"), out); | |
1034 | ||
925aa9e8 | 1035 | fputs(USAGE_OPTIONS, out); |
3f51c10b SK |
1036 | fputs(_(" -i log the logger command's PID\n"), out); |
1037 | fputs(_(" --id[=<id>] log the given <id>, or otherwise the PID\n"), out); | |
d0e875ff | 1038 | fputs(_(" -f, --file <file> log the contents of this file\n"), out); |
ae6846b8 | 1039 | fputs(_(" -e, --skip-empty do not log empty lines when processing files\n"), out); |
fd343a05 | 1040 | fputs(_(" --no-act do everything except the write the log\n"), out); |
d0e875ff | 1041 | fputs(_(" -p, --priority <prio> mark given message with this priority\n"), out); |
b6b67955 | 1042 | fputs(_(" --octet-count use rfc6587 octet counting\n"), out); |
d0e875ff KZ |
1043 | fputs(_(" --prio-prefix look for a prefix on every line read from stdin\n"), out); |
1044 | fputs(_(" -s, --stderr output message to standard error as well\n"), out); | |
f68b8aa7 | 1045 | fputs(_(" -S, --size <size> maximum size for a single message\n"), out); |
d0e875ff KZ |
1046 | fputs(_(" -t, --tag <tag> mark every line with this tag\n"), out); |
1047 | fputs(_(" -n, --server <name> write to this remote syslog server\n"), out); | |
1c722759 | 1048 | fputs(_(" -P, --port <port> use this port for UDP or TCP connection\n"), out); |
d0e875ff KZ |
1049 | fputs(_(" -T, --tcp use TCP only\n"), out); |
1050 | fputs(_(" -d, --udp use UDP only\n"), out); | |
1051 | fputs(_(" --rfc3164 use the obsolete BSD syslog protocol\n"), out); | |
2cb40465 | 1052 | fputs(_(" --rfc5424[=<snip>] use the syslog protocol (the default for remote);\n" |
d0e875ff | 1053 | " <snip> can be notime, or notq, and/or nohost\n"), out); |
4299ed1c KZ |
1054 | fputs(_(" --sd-id <id> rfc5424 structured data ID\n"), out); |
1055 | fputs(_(" --sd-param <data> rfc5424 structured data name=value\n"), out); | |
8fce3924 | 1056 | fputs(_(" --msgid <msgid> set rfc5424 message id field\n"), out); |
d0e875ff | 1057 | fputs(_(" -u, --socket <socket> write to this Unix socket\n"), out); |
d77dc29e SK |
1058 | fputs(_(" --socket-errors[=<on|off|auto>]\n" |
1059 | " print connection errors when using Unix sockets\n"), out); | |
ebff016a | 1060 | #ifdef HAVE_LIBSYSTEMD |
4b670c01 SK |
1061 | fputs(_(" --journald[=<file>] write journald entry\n"), out); |
1062 | #endif | |
925aa9e8 KZ |
1063 | |
1064 | fputs(USAGE_SEPARATOR, out); | |
f45f3ec3 RM |
1065 | printf(USAGE_HELP_OPTIONS(26)); |
1066 | printf(USAGE_MAN_TAIL("logger(1)")); | |
b363e86d | 1067 | |
86be6a32 | 1068 | exit(EXIT_SUCCESS); |
b363e86d SK |
1069 | } |
1070 | ||
6dbe3af9 KZ |
1071 | /* |
1072 | * logger -- read and log utility | |
1073 | * | |
1074 | * Reads from an input and arranges to write the result on the system | |
1075 | * log. | |
1076 | */ | |
195c3603 KZ |
1077 | int main(int argc, char **argv) |
1078 | { | |
cfa77d26 SK |
1079 | struct logger_ctl ctl = { |
1080 | .fd = -1, | |
59c6ac0b | 1081 | .pid = 0, |
d0b6c4bf | 1082 | .pri = LOG_USER | LOG_NOTICE, |
c68a1cb4 | 1083 | .prio_prefix = 0, |
cfa77d26 | 1084 | .tag = NULL, |
c68a1cb4 | 1085 | .unix_socket = NULL, |
d77dc29e | 1086 | .unix_socket_errors = 0, |
c68a1cb4 SK |
1087 | .server = NULL, |
1088 | .port = NULL, | |
2b3f40c5 | 1089 | .hdr = NULL, |
55f5bc66 | 1090 | .msgid = NULL, |
4de2e8a0 | 1091 | .socket_type = ALL_TYPES, |
f68b8aa7 | 1092 | .max_message_size = 1024, |
4de2e8a0 SK |
1093 | .rfc5424_time = 1, |
1094 | .rfc5424_tq = 1, | |
1095 | .rfc5424_host = 1, | |
ae6846b8 | 1096 | .skip_empty_lines = 0 |
cfa77d26 | 1097 | }; |
c68a1cb4 | 1098 | int ch; |
3d9f4b1d | 1099 | int stdout_reopened = 0; |
d77dc29e | 1100 | int unix_socket_errors_mode = AF_UNIX_ERRORS_AUTO; |
ebff016a | 1101 | #ifdef HAVE_LIBSYSTEMD |
4b670c01 SK |
1102 | FILE *jfd = NULL; |
1103 | #endif | |
b363e86d | 1104 | static const struct option longopts[] = { |
9a13f968 SK |
1105 | { "id", optional_argument, 0, OPT_ID }, |
1106 | { "stderr", no_argument, 0, 's' }, | |
1107 | { "file", required_argument, 0, 'f' }, | |
fd343a05 | 1108 | { "no-act", no_argument, 0, OPT_NOACT, }, |
9a13f968 SK |
1109 | { "priority", required_argument, 0, 'p' }, |
1110 | { "tag", required_argument, 0, 't' }, | |
1111 | { "socket", required_argument, 0, 'u' }, | |
d77dc29e | 1112 | { "socket-errors", required_argument, 0, OPT_SOCKET_ERRORS }, |
9a13f968 SK |
1113 | { "udp", no_argument, 0, 'd' }, |
1114 | { "tcp", no_argument, 0, 'T' }, | |
1115 | { "server", required_argument, 0, 'n' }, | |
1116 | { "port", required_argument, 0, 'P' }, | |
1117 | { "version", no_argument, 0, 'V' }, | |
1118 | { "help", no_argument, 0, 'h' }, | |
b6b67955 | 1119 | { "octet-count", no_argument, 0, OPT_OCTET_COUNT }, |
9a13f968 SK |
1120 | { "prio-prefix", no_argument, 0, OPT_PRIO_PREFIX }, |
1121 | { "rfc3164", no_argument, 0, OPT_RFC3164 }, | |
1122 | { "rfc5424", optional_argument, 0, OPT_RFC5424 }, | |
1123 | { "size", required_argument, 0, 'S' }, | |
1124 | { "msgid", required_argument, 0, OPT_MSGID }, | |
1125 | { "skip-empty", no_argument, 0, 'e' }, | |
4299ed1c KZ |
1126 | { "sd-id", required_argument, 0, OPT_STRUCTURED_DATA_ID }, |
1127 | { "sd-param", required_argument, 0, OPT_STRUCTURED_DATA_PARAM }, | |
ebff016a | 1128 | #ifdef HAVE_LIBSYSTEMD |
9a13f968 | 1129 | { "journald", optional_argument, 0, OPT_JOURNALD }, |
4b670c01 | 1130 | #endif |
9a13f968 | 1131 | { NULL, 0, 0, 0 } |
b363e86d | 1132 | }; |
7eda085c KZ |
1133 | |
1134 | setlocale(LC_ALL, ""); | |
1135 | bindtextdomain(PACKAGE, LOCALEDIR); | |
1136 | textdomain(PACKAGE); | |
c05a80ca | 1137 | atexit(close_stdout); |
6dbe3af9 | 1138 | |
4299ed1c KZ |
1139 | INIT_LIST_HEAD(&ctl.user_sds); |
1140 | INIT_LIST_HEAD(&ctl.reserved_sds); | |
1141 | ||
ae6846b8 | 1142 | while ((ch = getopt_long(argc, argv, "ef:ip:S:st:u:dTn:P:Vh", |
49999d6a | 1143 | longopts, NULL)) != -1) { |
98920f80 | 1144 | switch (ch) { |
6dbe3af9 | 1145 | case 'f': /* file to log */ |
49999d6a | 1146 | if (freopen(optarg, "r", stdin) == NULL) |
3d9f4b1d SK |
1147 | err(EXIT_FAILURE, _("file %s"), optarg); |
1148 | stdout_reopened = 1; | |
6dbe3af9 | 1149 | break; |
ae6846b8 RG |
1150 | case 'e': |
1151 | ctl.skip_empty_lines = 1; | |
1152 | break; | |
6dbe3af9 | 1153 | case 'i': /* log process id also */ |
ef5fb280 | 1154 | ctl.pid = logger_getpid(); |
3f51c10b SK |
1155 | break; |
1156 | case OPT_ID: | |
aab5b444 | 1157 | if (optarg) { |
e598686d KZ |
1158 | const char *p = optarg; |
1159 | ||
1160 | if (*p == '=') | |
1161 | p++; | |
59c6ac0b KZ |
1162 | ctl.pid = strtoul_or_err(optarg, _("failed to parse id")); |
1163 | } else | |
ef5fb280 | 1164 | ctl.pid = logger_getpid(); |
6dbe3af9 KZ |
1165 | break; |
1166 | case 'p': /* priority */ | |
cfa77d26 | 1167 | ctl.pri = pencode(optarg); |
6dbe3af9 KZ |
1168 | break; |
1169 | case 's': /* log to standard error */ | |
35d36197 | 1170 | ctl.stderr_printout = 1; |
6dbe3af9 KZ |
1171 | break; |
1172 | case 't': /* tag */ | |
cfa77d26 | 1173 | ctl.tag = optarg; |
6dbe3af9 | 1174 | break; |
7eda085c | 1175 | case 'u': /* unix socket */ |
c68a1cb4 | 1176 | ctl.unix_socket = optarg; |
7eda085c | 1177 | break; |
f68b8aa7 RG |
1178 | case 'S': /* max message size */ |
1179 | ctl.max_message_size = strtosize_or_err(optarg, | |
1180 | _("failed to parse message size")); | |
1181 | break; | |
66ee8158 | 1182 | case 'd': |
c68a1cb4 | 1183 | ctl.socket_type = TYPE_UDP; |
68265d07 SK |
1184 | break; |
1185 | case 'T': | |
c68a1cb4 | 1186 | ctl.socket_type = TYPE_TCP; |
66ee8158 | 1187 | break; |
68265d07 | 1188 | case 'n': |
c68a1cb4 | 1189 | ctl.server = optarg; |
912d6b98 | 1190 | break; |
68265d07 | 1191 | case 'P': |
c68a1cb4 | 1192 | ctl.port = optarg; |
912d6b98 | 1193 | break; |
b363e86d | 1194 | case 'V': |
e421313d | 1195 | printf(UTIL_LINUX_VERSION); |
b363e86d SK |
1196 | exit(EXIT_SUCCESS); |
1197 | case 'h': | |
86be6a32 | 1198 | usage(); |
b6b67955 AB |
1199 | case OPT_OCTET_COUNT: |
1200 | ctl.octet_count = 1; | |
1201 | break; | |
98920f80 | 1202 | case OPT_PRIO_PREFIX: |
c68a1cb4 | 1203 | ctl.prio_prefix = 1; |
98920f80 | 1204 | break; |
4de2e8a0 | 1205 | case OPT_RFC3164: |
2b3f40c5 | 1206 | ctl.syslogfp = syslog_rfc3164_header; |
4de2e8a0 SK |
1207 | break; |
1208 | case OPT_RFC5424: | |
2b3f40c5 | 1209 | ctl.syslogfp = syslog_rfc5424_header; |
4de2e8a0 SK |
1210 | if (optarg) |
1211 | parse_rfc5424_flags(&ctl, optarg); | |
1212 | break; | |
55f5bc66 | 1213 | case OPT_MSGID: |
9a13f968 | 1214 | if (strchr(optarg, ' ')) |
8fce3924 | 1215 | errx(EXIT_FAILURE, _("--msgid cannot contain space")); |
55f5bc66 RG |
1216 | ctl.msgid = optarg; |
1217 | break; | |
ebff016a | 1218 | #ifdef HAVE_LIBSYSTEMD |
4b670c01 SK |
1219 | case OPT_JOURNALD: |
1220 | if (optarg) { | |
1221 | jfd = fopen(optarg, "r"); | |
1222 | if (!jfd) | |
1223 | err(EXIT_FAILURE, _("cannot open %s"), | |
1224 | optarg); | |
1225 | } else | |
1226 | jfd = stdin; | |
1227 | break; | |
1228 | #endif | |
d77dc29e SK |
1229 | case OPT_SOCKET_ERRORS: |
1230 | unix_socket_errors_mode = parse_unix_socket_errors_flags(optarg); | |
1231 | break; | |
fd343a05 KZ |
1232 | case OPT_NOACT: |
1233 | ctl.noact = 1; | |
1234 | break; | |
4299ed1c KZ |
1235 | case OPT_STRUCTURED_DATA_ID: |
1236 | if (!valid_structured_data_id(optarg)) | |
1237 | errx(EXIT_FAILURE, _("invalid structured data ID: '%s'"), optarg); | |
1238 | add_structured_data_id(get_user_structured_data(&ctl), optarg); | |
1239 | break; | |
1240 | case OPT_STRUCTURED_DATA_PARAM: | |
1241 | if (!valid_structured_data_param(optarg)) | |
1242 | errx(EXIT_FAILURE, _("invalid structured data parameter: '%s'"), optarg); | |
1243 | add_structured_data_param(get_user_structured_data(&ctl), optarg); | |
1244 | break; | |
6dbe3af9 | 1245 | default: |
677ec86c | 1246 | errtryhelp(EXIT_FAILURE); |
6dbe3af9 | 1247 | } |
49999d6a | 1248 | } |
6dbe3af9 KZ |
1249 | argc -= optind; |
1250 | argv += optind; | |
3d9f4b1d SK |
1251 | if (stdout_reopened && argc) |
1252 | warnx(_("--file <file> and <message> are mutually exclusive, message is ignored")); | |
ebff016a | 1253 | #ifdef HAVE_LIBSYSTEMD |
4b670c01 | 1254 | if (jfd) { |
fd343a05 | 1255 | int ret = journald_entry(&ctl, jfd); |
4b670c01 SK |
1256 | if (stdin != jfd) |
1257 | fclose(jfd); | |
047e2888 | 1258 | if (ret) |
54fefa07 | 1259 | errx(EXIT_FAILURE, _("journald entry could not be written")); |
047e2888 | 1260 | return EXIT_SUCCESS; |
4b670c01 SK |
1261 | } |
1262 | #endif | |
4299ed1c KZ |
1263 | |
1264 | /* user overwrites build-in SD-ELEMENT */ | |
1265 | if (has_structured_data_id(get_user_structured_data(&ctl), "timeQuality")) | |
1266 | ctl.rfc5424_tq = 0; | |
1267 | ||
d77dc29e SK |
1268 | switch (unix_socket_errors_mode) { |
1269 | case AF_UNIX_ERRORS_OFF: | |
1270 | ctl.unix_socket_errors = 0; | |
1271 | break; | |
1272 | case AF_UNIX_ERRORS_ON: | |
1273 | ctl.unix_socket_errors = 1; | |
1274 | break; | |
1275 | case AF_UNIX_ERRORS_AUTO: | |
bcf7e149 | 1276 | ctl.unix_socket_errors = ctl.noact || ctl.stderr_printout; |
d77dc29e | 1277 | #ifdef HAVE_LIBSYSTEMD |
bcf7e149 | 1278 | ctl.unix_socket_errors |= !!sd_booted(); |
d77dc29e SK |
1279 | #endif |
1280 | break; | |
1281 | default: | |
1282 | abort(); | |
1283 | } | |
c68a1cb4 SK |
1284 | logger_open(&ctl); |
1285 | if (0 < argc) | |
1286 | logger_command_line(&ctl, argv); | |
7eda085c | 1287 | else |
c68a1cb4 SK |
1288 | /* Note. --file <arg> reopens stdin making the below |
1289 | * function to be used for file inputs. */ | |
1290 | logger_stdin(&ctl); | |
1291 | logger_close(&ctl); | |
49999d6a | 1292 | return EXIT_SUCCESS; |
6dbe3af9 | 1293 | } |