misc-utils/logger.c

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