newsyslog.c revision 112003
113244Sgraichen/* 213244Sgraichen * This file contains changes from the Open Software Foundation. 313244Sgraichen */ 413244Sgraichen 513244Sgraichen/* 659004Shm * Copyright 1988, 1989 by the Massachusetts Institute of Technology 759004Shm * 859004Shm * Permission to use, copy, modify, and distribute this software and its 959004Shm * documentation for any purpose and without fee is hereby granted, provided 1059004Shm * that the above copyright notice appear in all copies and that both that 1159004Shm * copyright notice and this permission notice appear in supporting 1259004Shm * documentation, and that the names of M.I.T. and the M.I.T. S.I.P.B. not be 1359004Shm * used in advertising or publicity pertaining to distribution of the 1459004Shm * software without specific, written prior permission. M.I.T. and the M.I.T. 1559004Shm * S.I.P.B. make no representations about the suitability of this software 1659004Shm * for any purpose. It is provided "as is" without express or implied 1759004Shm * warranty. 1859004Shm * 1959004Shm */ 2013244Sgraichen 2113244Sgraichen/* 2259004Shm * newsyslog - roll over selected logs at the appropriate time, keeping the a 2359004Shm * specified number of backup files around. 2413244Sgraichen */ 2513244Sgraichen 2613244Sgraichen#ifndef lint 2730160Scharnierstatic const char rcsid[] = 2859003Shm"$FreeBSD: head/usr.sbin/newsyslog/newsyslog.c 112003 2003-03-08 20:07:01Z gad $"; 2959004Shm#endif /* not lint */ 3013244Sgraichen 3143071Swollman#define OSF 3213244Sgraichen#ifndef COMPRESS_POSTFIX 3343071Swollman#define COMPRESS_POSTFIX ".gz" 3413244Sgraichen#endif 3580638Sobrien#ifndef BZCOMPRESS_POSTFIX 3680638Sobrien#define BZCOMPRESS_POSTFIX ".bz2" 3780638Sobrien#endif 3813244Sgraichen 3996001Smaxim#include <sys/param.h> 4096001Smaxim#include <sys/stat.h> 4196001Smaxim#include <sys/wait.h> 4296001Smaxim 4330160Scharnier#include <ctype.h> 4430160Scharnier#include <err.h> 4595999Smaxim#include <errno.h> 4630160Scharnier#include <fcntl.h> 47111773Sgad#include <fnmatch.h> 48106905Ssobomax#include <glob.h> 4930160Scharnier#include <grp.h> 5043071Swollman#include <paths.h> 5130160Scharnier#include <pwd.h> 5230160Scharnier#include <signal.h> 5313244Sgraichen#include <stdio.h> 5413244Sgraichen#include <stdlib.h> 5513244Sgraichen#include <string.h> 5643071Swollman#include <time.h> 5716240Salex#include <unistd.h> 5813244Sgraichen 5943071Swollman#include "pathnames.h" 6043071Swollman 61111768Sgad/* 62111768Sgad * Bit-values for the 'flags' parsed from a config-file entry. 63111768Sgad */ 64111768Sgad#define CE_COMPACT 0x0001 /* Compact the achived log files with gzip. */ 65111768Sgad#define CE_BZCOMPACT 0x0002 /* Compact the achived log files with bzip2. */ 66111781Sgad#define CE_COMPACTWAIT 0x0004 /* wait until compressing one file finishes */ 67111768Sgad /* before starting the next step. */ 68111768Sgad#define CE_BINARY 0x0008 /* Logfile is in binary, do not add status */ 69111768Sgad /* messages to logfile(s) when rotating. */ 70111781Sgad#define CE_NOSIGNAL 0x0010 /* There is no process to signal when */ 71111768Sgad /* trimming this file. */ 72111781Sgad#define CE_TRIMAT 0x0020 /* trim file at a specific time. */ 73111781Sgad#define CE_GLOB 0x0040 /* name of the log is file name pattern. */ 74112003Sgad#define CE_SIGNALGROUP 0x0080 /* Signal a process-group instead of a single */ 75112003Sgad /* process when trimming this file. */ 7643071Swollman 77111781Sgad#define MIN_PID 5 /* Don't touch pids lower than this */ 78111781Sgad#define MAX_PID 99999 /* was lower, see /usr/include/sys/proc.h */ 79111781Sgad 80111781Sgad#define kbytes(size) (((size) + 1023) >> 10) 81111781Sgad 8213244Sgraichenstruct conf_entry { 8359003Shm char *log; /* Name of the log */ 8459003Shm char *pid_file; /* PID file */ 85111772Sgad char *r_reason; /* The reason this file is being rotated */ 86111772Sgad int rotate; /* Non-zero if this file should be rotated */ 87111779Sgad uid_t uid; /* Owner of log */ 88111779Sgad gid_t gid; /* Group of log */ 8959003Shm int numlogs; /* Number of logs to keep */ 9059003Shm int size; /* Size cutoff to trigger trimming the log */ 9159003Shm int hours; /* Hours between log trimming */ 9259003Shm time_t trim_at; /* Specific time to do trimming */ 9359003Shm int permissions; /* File permissions on the log */ 9480646Sobrien int flags; /* CE_COMPACT, CE_BZCOMPACT, CE_BINARY */ 9559003Shm int sig; /* Signal to send */ 96111388Sgad int def_cfg; /* Using the <default> rule for this file */ 9759003Shm struct conf_entry *next;/* Linked list pointer */ 9813244Sgraichen}; 9913244Sgraichen 100111388Sgad#define DEFAULT_MARKER "<default>" 101111388Sgad 10259004Shmint archtodir = 0; /* Archive old logfiles to other directory */ 10359003Shmint verbose = 0; /* Print out what's going on */ 10459003Shmint needroot = 1; /* Root privs are necessary */ 10559003Shmint noaction = 0; /* Don't do anything, just show it */ 106111768Sgadint nosignal; /* Do not send any signals */ 10759003Shmint force = 0; /* Force the trim no matter what */ 108111772Sgadint rotatereq = 0; /* -R = Always rotate the file(s) as given */ 109111772Sgad /* on the command (this also requires */ 110111772Sgad /* that a list of files *are* given on */ 111111772Sgad /* the run command). */ 112111772Sgadchar *requestor; /* The name given on a -R request */ 11359004Shmchar *archdirname; /* Directory path to old logfiles archive */ 114111773Sgadconst char *conf; /* Configuration file to use */ 11559003Shmtime_t timenow; 11659003Shm 11771299Sjedgarchar hostname[MAXHOSTNAMELEN]; /* hostname */ 118108164Strhodeschar daytime[16]; /* timenow in human readable form */ 11913244Sgraichen 120111773Sgadstatic struct conf_entry *get_worklist(char **files); 121111773Sgadstatic void parse_file(FILE *cf, const char *cfname, struct conf_entry **work_p, 122111773Sgad struct conf_entry **defconf_p); 12316240Salexstatic char *sob(char *p); 12416240Salexstatic char *son(char *p); 12559003Shmstatic char *missing_field(char *p, char *errline); 12659003Shmstatic void do_entry(struct conf_entry * ent); 127111388Sgadstatic void free_entry(struct conf_entry *ent); 128111388Sgadstatic struct conf_entry *init_entry(const char *fname, 129111388Sgad struct conf_entry *src_entry); 130111781Sgadstatic void parse_args(int argc, char **argv); 13180640Sobrienstatic void usage(void); 132111779Sgadstatic void dotrim(const struct conf_entry *ent, char *log, 133111780Sgad int numdays, int flags); 134111768Sgadstatic int log_trim(const char *log, const struct conf_entry *log_ent); 135107916Ssobomaxstatic void compress_log(char *log, int dowait); 136107916Ssobomaxstatic void bzcompress_log(char *log, int dowait); 13716240Salexstatic int sizefile(char *file); 13816240Salexstatic int age_old_log(char *file); 139112003Sgadstatic int send_signal(const struct conf_entry *ent); 14093659Scjcstatic time_t parse8601(char *s, char *errline); 141111779Sgadstatic void movefile(char *from, char *to, int perm, uid_t owner_uid, 142111779Sgad gid_t group_gid); 14359004Shmstatic void createdir(char *dirpart); 14493659Scjcstatic time_t parseDWM(char *s, char *errline); 14513244Sgraichen 146111768Sgad/* 147111768Sgad * All the following are defined to work on an 'int', in the 148111768Sgad * range 0 to 255, plus EOF. Define wrappers which can take 149111768Sgad * values of type 'char', either signed or unsigned. 150111768Sgad */ 151111772Sgad#define isprintch(Anychar) isprint(((int) Anychar) & 255) 152111768Sgad#define isspacech(Anychar) isspace(((int) Anychar) & 255) 153111768Sgad#define tolowerch(Anychar) tolower(((int) Anychar) & 255) 154111768Sgad 15559004Shmint 15659004Shmmain(int argc, char **argv) 15713244Sgraichen{ 15859003Shm struct conf_entry *p, *q; 159111529Sgad char *savglob; 160106905Ssobomax glob_t pglob; 161106905Ssobomax int i; 16225443Sache 163111781Sgad parse_args(argc, argv); 164111773Sgad argc -= optind; 165111773Sgad argv += optind; 166111773Sgad 16759003Shm if (needroot && getuid() && geteuid()) 16859003Shm errx(1, "must have root privs"); 169111773Sgad p = q = get_worklist(argv); 17059003Shm 17159003Shm while (p) { 172106905Ssobomax if ((p->flags & CE_GLOB) == 0) { 173106905Ssobomax do_entry(p); 174106905Ssobomax } else { 175111773Sgad if (verbose > 2) 176111773Sgad printf("\t+ Processing pattern %s\n", p->log); 177106905Ssobomax if (glob(p->log, GLOB_NOCHECK, NULL, &pglob) != 0) { 178106905Ssobomax warn("can't expand pattern: %s", p->log); 179106905Ssobomax } else { 180111529Sgad savglob = p->log; 181106905Ssobomax for (i = 0; i < pglob.gl_matchc; i++) { 182106905Ssobomax p->log = pglob.gl_pathv[i]; 183106905Ssobomax do_entry(p); 184106905Ssobomax } 185106905Ssobomax globfree(&pglob); 186111529Sgad p->log = savglob; 187111773Sgad if (verbose > 2) 188111773Sgad printf("\t+ Done with pattern\n"); 189106905Ssobomax } 190106905Ssobomax } 19159003Shm p = p->next; 192111388Sgad free_entry(q); 19359003Shm q = p; 19459003Shm } 19595999Smaxim while (wait(NULL) > 0 || errno == EINTR) 19695999Smaxim ; 19759003Shm return (0); 19813244Sgraichen} 19913244Sgraichen 200111388Sgadstatic struct conf_entry * 201111388Sgadinit_entry(const char *fname, struct conf_entry *src_entry) 202111388Sgad{ 203111388Sgad struct conf_entry *tempwork; 204111388Sgad 205111388Sgad if (verbose > 4) 206111388Sgad printf("\t--> [creating entry for %s]\n", fname); 207111388Sgad 208111388Sgad tempwork = malloc(sizeof(struct conf_entry)); 209111388Sgad if (tempwork == NULL) 210111388Sgad err(1, "malloc of conf_entry for %s", fname); 211111388Sgad 212111388Sgad tempwork->log = strdup(fname); 213111388Sgad if (tempwork->log == NULL) 214111388Sgad err(1, "strdup for %s", fname); 215111388Sgad 216111388Sgad if (src_entry != NULL) { 217111388Sgad tempwork->pid_file = NULL; 218111388Sgad if (src_entry->pid_file) 219111388Sgad tempwork->pid_file = strdup(src_entry->pid_file); 220111772Sgad tempwork->r_reason = NULL; 221111772Sgad tempwork->rotate = 0; 222111388Sgad tempwork->uid = src_entry->uid; 223111388Sgad tempwork->gid = src_entry->gid; 224111388Sgad tempwork->numlogs = src_entry->numlogs; 225111388Sgad tempwork->size = src_entry->size; 226111388Sgad tempwork->hours = src_entry->hours; 227111388Sgad tempwork->trim_at = src_entry->trim_at; 228111388Sgad tempwork->permissions = src_entry->permissions; 229111388Sgad tempwork->flags = src_entry->flags; 230111388Sgad tempwork->sig = src_entry->sig; 231111388Sgad tempwork->def_cfg = src_entry->def_cfg; 232111388Sgad } else { 233111388Sgad /* Initialize as a "do-nothing" entry */ 234111388Sgad tempwork->pid_file = NULL; 235111772Sgad tempwork->r_reason = NULL; 236111772Sgad tempwork->rotate = 0; 237111779Sgad tempwork->uid = (uid_t)-1; 238111779Sgad tempwork->gid = (gid_t)-1; 239111388Sgad tempwork->numlogs = 1; 240111388Sgad tempwork->size = -1; 241111388Sgad tempwork->hours = -1; 242111388Sgad tempwork->trim_at = (time_t)0; 243111388Sgad tempwork->permissions = 0; 244111388Sgad tempwork->flags = 0; 245111388Sgad tempwork->sig = SIGHUP; 246111388Sgad tempwork->def_cfg = 0; 247111388Sgad } 248111388Sgad tempwork->next = NULL; 249111388Sgad 250111388Sgad return (tempwork); 251111388Sgad} 252111388Sgad 25359004Shmstatic void 254111388Sgadfree_entry(struct conf_entry *ent) 255111388Sgad{ 256111388Sgad 257111388Sgad if (ent == NULL) 258111388Sgad return; 259111388Sgad 260111388Sgad if (ent->log != NULL) { 261111388Sgad if (verbose > 4) 262111388Sgad printf("\t--> [freeing entry for %s]\n", ent->log); 263111388Sgad free(ent->log); 264111388Sgad ent->log = NULL; 265111388Sgad } 266111388Sgad 267111388Sgad if (ent->pid_file != NULL) { 268111388Sgad free(ent->pid_file); 269111388Sgad ent->pid_file = NULL; 270111388Sgad } 271111388Sgad 272111772Sgad if (ent->r_reason != NULL) { 273111772Sgad free(ent->r_reason); 274111772Sgad ent->r_reason = NULL; 275111772Sgad } 276111772Sgad 277111388Sgad free(ent); 278111388Sgad} 279111388Sgad 280111388Sgadstatic void 28159004Shmdo_entry(struct conf_entry * ent) 28213244Sgraichen{ 283111772Sgad#define REASON_MAX 80 28459003Shm int size, modtime; 285111772Sgad char temp_reason[REASON_MAX]; 28659003Shm 28759003Shm if (verbose) { 28859003Shm if (ent->flags & CE_COMPACT) 28959003Shm printf("%s <%dZ>: ", ent->log, ent->numlogs); 29080638Sobrien else if (ent->flags & CE_BZCOMPACT) 29180638Sobrien printf("%s <%dJ>: ", ent->log, ent->numlogs); 29259003Shm else 29359003Shm printf("%s <%d>: ", ent->log, ent->numlogs); 29459003Shm } 29559003Shm size = sizefile(ent->log); 29659003Shm modtime = age_old_log(ent->log); 297111772Sgad ent->rotate = 0; 29859003Shm if (size < 0) { 29959003Shm if (verbose) 30059003Shm printf("does not exist.\n"); 30159003Shm } else { 302111772Sgad if (ent->flags & CE_TRIMAT && !force && !rotatereq) { 30343071Swollman if (timenow < ent->trim_at 30459003Shm || difftime(timenow, ent->trim_at) >= 60 * 60) { 30543071Swollman if (verbose) 30643071Swollman printf("--> will trim at %s", 30759003Shm ctime(&ent->trim_at)); 30843071Swollman return; 30943071Swollman } else if (verbose && ent->hours <= 0) { 31043071Swollman printf("--> time is up\n"); 31143071Swollman } 31243071Swollman } 31359003Shm if (verbose && (ent->size > 0)) 31459003Shm printf("size (Kb): %d [%d] ", size, ent->size); 31559003Shm if (verbose && (ent->hours > 0)) 31659003Shm printf(" age (hr): %d [%d] ", modtime, ent->hours); 317111772Sgad 318111772Sgad /* 319111772Sgad * Figure out if this logfile needs to be rotated. 320111772Sgad */ 321111772Sgad temp_reason[0] = '\0'; 322111772Sgad if (rotatereq) { 323111772Sgad ent->rotate = 1; 324111772Sgad snprintf(temp_reason, REASON_MAX, " due to -R from %s", 325111772Sgad requestor); 326111772Sgad } else if (force) { 327111772Sgad ent->rotate = 1; 328111772Sgad snprintf(temp_reason, REASON_MAX, " due to -F request"); 329111772Sgad } else if ((ent->size > 0) && (size >= ent->size)) { 330111772Sgad ent->rotate = 1; 331111772Sgad snprintf(temp_reason, REASON_MAX, " due to size>%dK", 332111772Sgad ent->size); 333111772Sgad } else if (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) { 334111772Sgad ent->rotate = 1; 335111772Sgad } else if ((ent->hours > 0) && ((modtime >= ent->hours) || 336111772Sgad (modtime < 0))) { 337111772Sgad ent->rotate = 1; 338111772Sgad } 339111772Sgad 340111772Sgad /* 341111772Sgad * If the file needs to be rotated, then rotate it. 342111772Sgad */ 343111772Sgad if (ent->rotate) { 344111772Sgad if (temp_reason[0] != '\0') 345111772Sgad ent->r_reason = strdup(temp_reason); 34659003Shm if (verbose) 34759003Shm printf("--> trimming log....\n"); 34859003Shm if (noaction && !verbose) { 34959003Shm if (ent->flags & CE_COMPACT) 35059003Shm printf("%s <%dZ>: trimming\n", 35159003Shm ent->log, ent->numlogs); 35280638Sobrien else if (ent->flags & CE_BZCOMPACT) 35380638Sobrien printf("%s <%dJ>: trimming\n", 35480638Sobrien ent->log, ent->numlogs); 35559003Shm else 35659003Shm printf("%s <%d>: trimming\n", 35759003Shm ent->log, ent->numlogs); 35859003Shm } 359111780Sgad dotrim(ent, ent->log, ent->numlogs, ent->flags); 36059003Shm } else { 36159003Shm if (verbose) 36259003Shm printf("--> skipping\n"); 36359003Shm } 36459003Shm } 365111772Sgad#undef REASON_MAX 36613244Sgraichen} 36713244Sgraichen 368112003Sgad/* Send a signal to the pid specified by pidfile */ 369112003Sgadstatic int 370112003Sgadsend_signal(const struct conf_entry *ent) 371112003Sgad{ 372112003Sgad pid_t target_pid; 373112003Sgad int did_notify; 374112003Sgad FILE *f; 375112003Sgad long minok, maxok, rval; 376112003Sgad const char *target_name; 377112003Sgad char *endp, *linep, line[BUFSIZ]; 378112003Sgad 379112003Sgad did_notify = 0; 380112003Sgad f = fopen(ent->pid_file, "r"); 381112003Sgad if (f == NULL) { 382112003Sgad warn("can't open pid file: %s", ent->pid_file); 383112003Sgad return (did_notify); 384112003Sgad /* NOTREACHED */ 385112003Sgad } 386112003Sgad 387112003Sgad if (fgets(line, BUFSIZ, f) == NULL) { 388112003Sgad /* 389112003Sgad * XXX - If the pid file is empty, is that really a 390112003Sgad * problem? Wouldn't that mean that the process 391112003Sgad * has shut down? In that case there would be no 392112003Sgad * problem with compressing the rotated log file. 393112003Sgad */ 394112003Sgad if (feof(f)) 395112003Sgad warnx("pid file is empty: %s", ent->pid_file); 396112003Sgad else 397112003Sgad warn("can't read from pid file: %s", ent->pid_file); 398112003Sgad (void) fclose(f); 399112003Sgad return (did_notify); 400112003Sgad /* NOTREACHED */ 401112003Sgad } 402112003Sgad (void) fclose(f); 403112003Sgad 404112003Sgad target_name = "daemon"; 405112003Sgad minok = MIN_PID; 406112003Sgad maxok = MAX_PID; 407112003Sgad if (ent->flags & CE_SIGNALGROUP) { 408112003Sgad /* 409112003Sgad * If we are expected to signal a process-group when 410112003Sgad * rotating this logfile, then the value read in should 411112003Sgad * be the negative of a valid process ID. 412112003Sgad */ 413112003Sgad target_name = "process-group"; 414112003Sgad minok = -MAX_PID; 415112003Sgad maxok = -MIN_PID; 416112003Sgad } 417112003Sgad 418112003Sgad errno = 0; 419112003Sgad linep = line; 420112003Sgad while (*linep == ' ') 421112003Sgad linep++; 422112003Sgad rval = strtol(linep, &endp, 10); 423112003Sgad if (*endp != '\0' && !isspacech(*endp)) { 424112003Sgad warnx("pid file does not start with a valid number: %s", 425112003Sgad ent->pid_file); 426112003Sgad rval = 0; 427112003Sgad } else if (rval < minok || rval > maxok) { 428112003Sgad warnx("bad value '%ld' for process number in %s", 429112003Sgad rval, ent->pid_file); 430112003Sgad if (verbose) 431112003Sgad warnx("\t(expecting value between %ld and %ld)", 432112003Sgad minok, maxok); 433112003Sgad rval = 0; 434112003Sgad } 435112003Sgad if (rval == 0) { 436112003Sgad return (did_notify); 437112003Sgad /* NOTREACHED */ 438112003Sgad } 439112003Sgad 440112003Sgad target_pid = rval; 441112003Sgad 442112003Sgad if (noaction) { 443112003Sgad did_notify = 1; 444112003Sgad printf("\tkill -%d %d\n", ent->sig, (int) target_pid); 445112003Sgad } else if (kill(target_pid, ent->sig)) { 446112003Sgad /* 447112003Sgad * XXX - Iff the error was "no such process", should that 448112003Sgad * really be an error for us? Perhaps the process 449112003Sgad * is already gone, in which case there would be no 450112003Sgad * problem with compressing the rotated log file. 451112003Sgad */ 452112003Sgad warn("can't notify %s, pid %d", target_name, 453112003Sgad (int) target_pid); 454112003Sgad } else { 455112003Sgad did_notify = 1; 456112003Sgad if (verbose) 457112003Sgad printf("%s pid %d notified\n", target_name, 458112003Sgad (int) target_pid); 459112003Sgad } 460112003Sgad 461112003Sgad return (did_notify); 462112003Sgad} 463112003Sgad 46459004Shmstatic void 465111781Sgadparse_args(int argc, char **argv) 46613244Sgraichen{ 467111781Sgad int ch; 46859003Shm char *p; 46913244Sgraichen 470111781Sgad timenow = time(NULL); 471108164Strhodes (void)strncpy(daytime, ctime(&timenow) + 4, 15); 47259003Shm daytime[15] = '\0'; 47313244Sgraichen 47459003Shm /* Let's get our hostname */ 475111781Sgad (void)gethostname(hostname, sizeof(hostname)); 47613244Sgraichen 47713244Sgraichen /* Truncate domain */ 478111781Sgad if ((p = strchr(hostname, '.')) != NULL) 47913244Sgraichen *p = '\0'; 480111768Sgad 481111768Sgad /* Parse command line options. */ 482111781Sgad while ((ch = getopt(argc, argv, "a:f:nrsvFR:")) != -1) 483111781Sgad switch (ch) { 48459004Shm case 'a': 48559004Shm archtodir++; 48659004Shm archdirname = optarg; 48759004Shm break; 488111768Sgad case 'f': 489111768Sgad conf = optarg; 490111768Sgad break; 491111768Sgad case 'n': 492111768Sgad noaction++; 493111768Sgad break; 49459003Shm case 'r': 49559003Shm needroot = 0; 49659003Shm break; 497111768Sgad case 's': 498111768Sgad nosignal = 1; 499111768Sgad break; 50059003Shm case 'v': 50159003Shm verbose++; 50259003Shm break; 50334584Spst case 'F': 50434584Spst force++; 50534584Spst break; 506111772Sgad case 'R': 507111772Sgad rotatereq++; 508111772Sgad requestor = strdup(optarg); 509111772Sgad break; 510111781Sgad case 'm': /* Used by OpenBSD for "monitor mode" */ 51159003Shm default: 51259003Shm usage(); 513111768Sgad /* NOTREACHED */ 51459003Shm } 515111772Sgad 516111772Sgad if (rotatereq) { 517111772Sgad if (optind == argc) { 518111772Sgad warnx("At least one filename must be given when -R is specified."); 519111772Sgad usage(); 520111772Sgad /* NOTREACHED */ 521111772Sgad } 522111772Sgad /* Make sure "requestor" value is safe for a syslog message. */ 523111772Sgad for (p = requestor; *p != '\0'; p++) { 524111772Sgad if (!isprintch(*p) && (*p != '\t')) 525111772Sgad *p = '.'; 526111772Sgad } 527111772Sgad } 52843071Swollman} 52913244Sgraichen 53059004Shmstatic void 53159004Shmusage(void) 53213244Sgraichen{ 53380646Sobrien 53480646Sobrien fprintf(stderr, 535111772Sgad "usage: newsyslog [-Fnrsv] [-a directory] [-f config-file]\n" 536111772Sgad " [ [-R requestor] filename ... ]\n"); 53759003Shm exit(1); 53813244Sgraichen} 53913244Sgraichen 54059004Shm/* 541111773Sgad * Parse a configuration file and return a linked list of all the logs 542111773Sgad * which should be processed. 54313244Sgraichen */ 54459003Shmstatic struct conf_entry * 545111773Sgadget_worklist(char **files) 54613244Sgraichen{ 54759003Shm FILE *f; 548111773Sgad const char *fname; 549111773Sgad char **given; 550111773Sgad struct conf_entry *defconf, *dupent, *ent, *firstnew; 551111773Sgad struct conf_entry *newlist, *worklist; 552111773Sgad int gmatch; 553111773Sgad 554111773Sgad defconf = worklist = NULL; 555111773Sgad 556111773Sgad fname = conf; 557111773Sgad if (fname == NULL) 558111773Sgad fname = _PATH_CONF; 559111773Sgad 560111773Sgad if (strcmp(fname, "-") != 0) 561111773Sgad f = fopen(fname, "r"); 562111773Sgad else { 563111773Sgad f = stdin; 564111773Sgad fname = "<stdin>"; 565111773Sgad } 566111773Sgad if (!f) 567111773Sgad err(1, "%s", conf); 568111773Sgad 569111773Sgad parse_file(f, fname, &worklist, &defconf); 570111773Sgad (void) fclose(f); 571111773Sgad 572111773Sgad /* 573111773Sgad * All config-file information has been read in and turned into 574111773Sgad * a worklist. If there were no specific files given on the run 575111773Sgad * command, then the work of this routine is done. 576111773Sgad */ 577111773Sgad if (*files == NULL) { 578111773Sgad if (defconf != NULL) 579111773Sgad free_entry(defconf); 580111773Sgad return (worklist); 581111773Sgad /* NOTREACHED */ 582111773Sgad } 583111773Sgad 584111773Sgad /* 585111773Sgad * If newsyslog was given a specific list of files to process, 586111773Sgad * it may be that some of those files were not listed in any 587111773Sgad * config file. Those unlisted files should get the default 588111773Sgad * rotation action. First, create the default-rotation action 589111773Sgad * if none was found in a system config file. 590111773Sgad */ 591111773Sgad if (defconf == NULL) { 592111773Sgad defconf = init_entry(DEFAULT_MARKER, NULL); 593111773Sgad defconf->numlogs = 3; 594111773Sgad defconf->size = 50; 595111773Sgad defconf->permissions = S_IRUSR|S_IWUSR; 596111773Sgad } 597111773Sgad 598111773Sgad /* 599111773Sgad * If newsyslog was run with a list of specific filenames, 600111773Sgad * then create a new worklist which has only those files in 601111773Sgad * it, picking up the rotation-rules for those files from 602111773Sgad * the original worklist. 603111773Sgad * 604111773Sgad * XXX - Note that this will copy multiple rules for a single 605111773Sgad * logfile, if multiple entries are an exact match for 606111773Sgad * that file. That matches the historic behavior, but do 607111773Sgad * we want to continue to allow it? If so, it should 608111773Sgad * probably be handled more intelligently. 609111773Sgad */ 610111773Sgad firstnew = newlist = NULL; 611111773Sgad for (given = files; *given; ++given) { 612111773Sgad gmatch = 0; 613111773Sgad /* 614111773Sgad * First try to find exact-matches for this given file. 615111773Sgad */ 616111773Sgad for (ent = worklist; ent; ent = ent->next) { 617111773Sgad if ((ent->flags & CE_GLOB) != 0) 618111773Sgad continue; 619111773Sgad if (strcmp(ent->log, *given) == 0) { 620111773Sgad gmatch++; 621111773Sgad dupent = init_entry(*given, ent); 622111773Sgad if (!firstnew) 623111773Sgad firstnew = dupent; 624111773Sgad else 625111773Sgad newlist->next = dupent; 626111773Sgad newlist = dupent; 627111773Sgad } 628111773Sgad } 629111773Sgad if (gmatch) { 630111773Sgad if (verbose > 2) 631111773Sgad printf("\t+ Matched entry %s\n", *given); 632111773Sgad continue; 633111773Sgad } 634111773Sgad 635111773Sgad /* 636111773Sgad * There was no exact-match for this given file, so look 637111773Sgad * for a "glob" entry which does match. 638111773Sgad */ 639111773Sgad for (ent = worklist; ent; ent = ent->next) { 640111773Sgad if ((ent->flags & CE_GLOB) == 0) 641111773Sgad continue; 642111773Sgad if (fnmatch(ent->log, *given, FNM_PATHNAME) == 0) { 643111773Sgad gmatch++; 644111773Sgad dupent = init_entry(*given, ent); 645111773Sgad if (!firstnew) 646111773Sgad firstnew = dupent; 647111773Sgad else 648111773Sgad newlist->next = dupent; 649111773Sgad newlist = dupent; 650111773Sgad /* This work entry is *not* a glob! */ 651111773Sgad dupent->flags &= ~CE_GLOB; 652111773Sgad /* Only allow a match to one glob-entry */ 653111773Sgad break; 654111773Sgad } 655111773Sgad } 656111773Sgad if (gmatch) { 657111773Sgad if (verbose > 2) 658111773Sgad printf("\t+ Matched %s via %s\n", *given, 659111773Sgad ent->log); 660111773Sgad continue; 661111773Sgad } 662111773Sgad 663111773Sgad /* 664111773Sgad * This given file was not found in any config file, so 665111773Sgad * add a worklist item based on the default entry. 666111773Sgad */ 667111773Sgad if (verbose > 2) 668111773Sgad printf("\t+ No entry matched %s (will use %s)\n", 669111773Sgad *given, DEFAULT_MARKER); 670111773Sgad dupent = init_entry(*given, defconf); 671111773Sgad if (!firstnew) 672111773Sgad firstnew = dupent; 673111773Sgad else 674111773Sgad newlist->next = dupent; 675111773Sgad /* Mark that it was *not* found in a config file */ 676111773Sgad dupent->def_cfg = 1; 677111773Sgad newlist = dupent; 678111773Sgad } 679111773Sgad 680111773Sgad /* 681111773Sgad * Free all the entries in the original work list, and then 682111773Sgad * return the new work list. 683111773Sgad */ 684111773Sgad while (worklist) { 685111773Sgad ent = worklist->next; 686111773Sgad free_entry(worklist); 687111773Sgad worklist = ent; 688111773Sgad } 689111773Sgad 690111773Sgad free_entry(defconf); 691111773Sgad return (newlist); 692111773Sgad} 693111773Sgad 694111773Sgad/* 695111773Sgad * Parse a configuration file and update a linked list of all the logs to 696111773Sgad * process. 697111773Sgad */ 698111773Sgadstatic void 699111773Sgadparse_file(FILE *cf, const char *cfname, struct conf_entry **work_p, 700111773Sgad struct conf_entry **defconf_p) 701111773Sgad{ 70259003Shm char line[BUFSIZ], *parse, *q; 703107737Ssobomax char *cp, *errline, *group; 704111773Sgad struct conf_entry *working, *worklist; 705111781Sgad struct passwd *pwd; 70659003Shm struct group *grp; 70725518Sbrian int eol; 70813244Sgraichen 709111773Sgad /* 710111773Sgad * XXX - for now, assume that only one config file will be read, 711111773Sgad * ie, this routine is only called one time. 712111773Sgad */ 713111773Sgad worklist = NULL; 71480646Sobrien 715111773Sgad while (fgets(line, BUFSIZ, cf)) { 716107737Ssobomax if ((line[0] == '\n') || (line[0] == '#') || 717107737Ssobomax (strlen(line) == 0)) 71859003Shm continue; 71959003Shm errline = strdup(line); 720107737Ssobomax for (cp = line + 1; *cp != '\0'; cp++) { 721107737Ssobomax if (*cp != '#') 722107737Ssobomax continue; 723107737Ssobomax if (*(cp - 1) == '\\') { 724107737Ssobomax strcpy(cp - 1, cp); 725107737Ssobomax cp--; 726107737Ssobomax continue; 727107737Ssobomax } 728107737Ssobomax *cp = '\0'; 729107737Ssobomax break; 730107737Ssobomax } 73160373Sdes 73260373Sdes q = parse = missing_field(sob(line), errline); 73360373Sdes parse = son(line); 73460373Sdes if (!*parse) 73580646Sobrien errx(1, "malformed line (missing fields):\n%s", 73680646Sobrien errline); 73760373Sdes *parse = '\0'; 73860373Sdes 739111388Sgad working = init_entry(q, NULL); 740111388Sgad if (strcasecmp(DEFAULT_MARKER, q) == 0) { 741111773Sgad if (defconf_p == NULL) { 742111773Sgad warnx("Ignoring entry for %s in %s!", q, 743111773Sgad cfname); 744111773Sgad free_entry(working); 745111773Sgad continue; 746111773Sgad } else if (*defconf_p != NULL) { 747111388Sgad warnx("Ignoring duplicate entry for %s!", q); 748111388Sgad free_entry(working); 749111388Sgad continue; 750111388Sgad } 751111773Sgad *defconf_p = working; 75259003Shm } else { 753111773Sgad if (!*work_p) 754111773Sgad *work_p = working; 755111388Sgad else 756111388Sgad worklist->next = working; 757111388Sgad worklist = working; 75859003Shm } 75913244Sgraichen 76059003Shm q = parse = missing_field(sob(++parse), errline); 76159003Shm parse = son(parse); 76225518Sbrian if (!*parse) 76380646Sobrien errx(1, "malformed line (missing fields):\n%s", 76480646Sobrien errline); 76559003Shm *parse = '\0'; 76659003Shm if ((group = strchr(q, ':')) != NULL || 76759003Shm (group = strrchr(q, '.')) != NULL) { 76859003Shm *group++ = '\0'; 76959003Shm if (*q) { 77059003Shm if (!(isnumber(*q))) { 771111781Sgad if ((pwd = getpwnam(q)) == NULL) 77259003Shm errx(1, 77380646Sobrien "error in config file; unknown user:\n%s", 77459003Shm errline); 775111781Sgad working->uid = pwd->pw_uid; 77659003Shm } else 77759003Shm working->uid = atoi(q); 77859003Shm } else 779111779Sgad working->uid = (uid_t)-1; 78013244Sgraichen 78159003Shm q = group; 78259003Shm if (*q) { 78359003Shm if (!(isnumber(*q))) { 78459003Shm if ((grp = getgrnam(q)) == NULL) 78559003Shm errx(1, 78680646Sobrien "error in config file; unknown group:\n%s", 78759003Shm errline); 78859003Shm working->gid = grp->gr_gid; 78959003Shm } else 79059003Shm working->gid = atoi(q); 79159003Shm } else 792111779Sgad working->gid = (gid_t)-1; 79313244Sgraichen 79459003Shm q = parse = missing_field(sob(++parse), errline); 79559003Shm parse = son(parse); 79659003Shm if (!*parse) 79780646Sobrien errx(1, "malformed line (missing fields):\n%s", 79880646Sobrien errline); 79959003Shm *parse = '\0'; 800111779Sgad } else { 801111779Sgad working->uid = (uid_t)-1; 802111779Sgad working->gid = (gid_t)-1; 803111779Sgad } 80459003Shm 80559003Shm if (!sscanf(q, "%o", &working->permissions)) 80659003Shm errx(1, "error in config file; bad permissions:\n%s", 80759003Shm errline); 80859003Shm 80959003Shm q = parse = missing_field(sob(++parse), errline); 81059003Shm parse = son(parse); 81125518Sbrian if (!*parse) 81280646Sobrien errx(1, "malformed line (missing fields):\n%s", 81380646Sobrien errline); 81459003Shm *parse = '\0'; 815111400Sgad if (!sscanf(q, "%d", &working->numlogs) || working->numlogs < 0) 816111400Sgad errx(1, "error in config file; bad value for count of logs to save:\n%s", 81759003Shm errline); 81813244Sgraichen 81959003Shm q = parse = missing_field(sob(++parse), errline); 82059003Shm parse = son(parse); 82125518Sbrian if (!*parse) 82280646Sobrien errx(1, "malformed line (missing fields):\n%s", 82380646Sobrien errline); 82459003Shm *parse = '\0'; 82559003Shm if (isdigit(*q)) 82659003Shm working->size = atoi(q); 82759003Shm else 82859003Shm working->size = -1; 82959003Shm 83059003Shm working->flags = 0; 83159003Shm q = parse = missing_field(sob(++parse), errline); 83259003Shm parse = son(parse); 83325518Sbrian eol = !*parse; 83459003Shm *parse = '\0'; 83543071Swollman { 83659003Shm char *ep; 83759003Shm u_long ul; 83813244Sgraichen 83943071Swollman ul = strtoul(q, &ep, 10); 84043071Swollman if (ep == q) 84143071Swollman working->hours = 0; 84243071Swollman else if (*ep == '*') 84343071Swollman working->hours = -1; 84443071Swollman else if (ul > INT_MAX) 84543071Swollman errx(1, "interval is too large:\n%s", errline); 84643071Swollman else 84743071Swollman working->hours = ul; 84843071Swollman 84980646Sobrien if (*ep != '\0' && *ep != '@' && *ep != '*' && 85080646Sobrien *ep != '$') 85143071Swollman errx(1, "malformed interval/at:\n%s", errline); 85243071Swollman if (*ep == '@') { 85393659Scjc if ((working->trim_at = parse8601(ep + 1, errline)) 85459003Shm == (time_t) - 1) 85543071Swollman errx(1, "malformed at:\n%s", errline); 85643071Swollman working->flags |= CE_TRIMAT; 85759004Shm } else if (*ep == '$') { 85893659Scjc if ((working->trim_at = parseDWM(ep + 1, errline)) 85959004Shm == (time_t) - 1) 86059004Shm errx(1, "malformed at:\n%s", errline); 86159004Shm working->flags |= CE_TRIMAT; 86243071Swollman } 86343071Swollman } 86443071Swollman 86525518Sbrian if (eol) 86659003Shm q = NULL; 86725518Sbrian else { 86859003Shm q = parse = sob(++parse); /* Optional field */ 86959003Shm parse = son(parse); 87059003Shm if (!*parse) 87159003Shm eol = 1; 87259003Shm *parse = '\0'; 87325518Sbrian } 87425443Sache 875111768Sgad for (; q && *q && !isspacech(*q); q++) { 876111768Sgad switch (tolowerch(*q)) { 877111768Sgad case 'b': 87859003Shm working->flags |= CE_BINARY; 879111768Sgad break; 880111781Sgad case 'c': /* Used by NetBSD for "CE_CREATE" */ 881111768Sgad /* 882111768Sgad * netbsd uses 'c' for "create". We will 883111768Sgad * temporarily accept it for 'g', because 884111768Sgad * earlier freebsd versions had a typo 885111768Sgad * of ('G' || 'c')... 886111768Sgad */ 887111768Sgad warnx("Assuming 'g' for 'c' in flags for line:\n%s", 888111768Sgad errline); 889111768Sgad /* FALLTHROUGH */ 890111768Sgad case 'g': 891106905Ssobomax working->flags |= CE_GLOB; 892111768Sgad break; 893111768Sgad case 'j': 894111768Sgad working->flags |= CE_BZCOMPACT; 895111768Sgad break; 896111768Sgad case 'n': 897111768Sgad working->flags |= CE_NOSIGNAL; 898111768Sgad break; 899112003Sgad case 'u': 900112003Sgad working->flags |= CE_SIGNALGROUP; 901112003Sgad break; 902111768Sgad case 'w': 903107916Ssobomax working->flags |= CE_COMPACTWAIT; 904111768Sgad break; 905111768Sgad case 'z': 906111768Sgad working->flags |= CE_COMPACT; 907111768Sgad break; 908111768Sgad case '-': 909111768Sgad break; 910111781Sgad case 'f': /* Used by OpenBSD for "CE_FOLLOW" */ 911111781Sgad case 'm': /* Used by OpenBSD for "CE_MONITOR" */ 912111781Sgad case 'p': /* Used by NetBSD for "CE_PLAIN0" */ 913111768Sgad default: 91480646Sobrien errx(1, "illegal flag in config file -- %c", 91580646Sobrien *q); 916111768Sgad } 91759003Shm } 91859003Shm 91925518Sbrian if (eol) 92059003Shm q = NULL; 92125518Sbrian else { 92259003Shm q = parse = sob(++parse); /* Optional field */ 92359003Shm parse = son(parse); 92459003Shm if (!*parse) 92559003Shm eol = 1; 92659003Shm *parse = '\0'; 92725518Sbrian } 92825443Sache 92925443Sache working->pid_file = NULL; 93025443Sache if (q && *q) { 93125443Sache if (*q == '/') 93225443Sache working->pid_file = strdup(q); 93336817Sache else if (isdigit(*q)) 93436817Sache goto got_sig; 93559003Shm else 93680646Sobrien errx(1, 93780646Sobrien "illegal pid file or signal number in config file:\n%s", 93880646Sobrien errline); 93925443Sache } 94036817Sache if (eol) 94159003Shm q = NULL; 94236817Sache else { 94359003Shm q = parse = sob(++parse); /* Optional field */ 94459003Shm *(parse = son(parse)) = '\0'; 94536817Sache } 94636817Sache 94736817Sache working->sig = SIGHUP; 94836817Sache if (q && *q) { 94936817Sache if (isdigit(*q)) { 95059003Shm got_sig: 95136817Sache working->sig = atoi(q); 95236817Sache } else { 95359003Shm err_sig: 95480646Sobrien errx(1, 95580646Sobrien "illegal signal number in config file:\n%s", 95680646Sobrien errline); 95736817Sache } 95836817Sache if (working->sig < 1 || working->sig >= NSIG) 95936817Sache goto err_sig; 96036817Sache } 961111768Sgad 962111768Sgad /* 963111768Sgad * Finish figuring out what pid-file to use (if any) in 964111768Sgad * later processing if this logfile needs to be rotated. 965111768Sgad */ 966111768Sgad if ((working->flags & CE_NOSIGNAL) == CE_NOSIGNAL) { 967111768Sgad /* 968111768Sgad * This config-entry specified 'n' for nosignal, 969111768Sgad * see if it also specified an explicit pid_file. 970111768Sgad * This would be a pretty pointless combination. 971111768Sgad */ 972111768Sgad if (working->pid_file != NULL) { 973111768Sgad warnx("Ignoring '%s' because flag 'n' was specified in line:\n%s", 974111768Sgad working->pid_file, errline); 975111768Sgad free(working->pid_file); 976111768Sgad working->pid_file = NULL; 977111768Sgad } 978111768Sgad } else if (working->pid_file == NULL) { 979111768Sgad /* 980111768Sgad * This entry did not specify the 'n' flag, which 981111768Sgad * means it should signal syslogd unless it had 982112003Sgad * specified some other pid-file (and obviously the 983112003Sgad * syslog pid-file will not be for a process-group). 984112003Sgad * Also, we should only try to notify syslog if we 985112003Sgad * are root. 986111768Sgad */ 987112003Sgad if (working->flags & CE_SIGNALGROUP) { 988112003Sgad warnx("Ignoring flag 'U' in line:\n%s", 989112003Sgad errline); 990112003Sgad working->flags &= ~CE_SIGNALGROUP; 991112003Sgad } 992111768Sgad if (needroot) 993111768Sgad working->pid_file = strdup(_PATH_SYSLOGPID); 994111768Sgad } 995111768Sgad 99659003Shm free(errline); 997111768Sgad errline = NULL; 99859003Shm } 99913244Sgraichen} 100013244Sgraichen 100159003Shmstatic char * 100259004Shmmissing_field(char *p, char *errline) 100313244Sgraichen{ 100480646Sobrien 100559003Shm if (!p || !*p) 100659003Shm errx(1, "missing field in config file:\n%s", errline); 100759003Shm return (p); 100813244Sgraichen} 100913244Sgraichen 101059004Shmstatic void 1011111780Sgaddotrim(const struct conf_entry *ent, char *log, int numdays, int flags) 101213244Sgraichen{ 101371299Sjedgar char dirpart[MAXPATHLEN], namepart[MAXPATHLEN]; 101471299Sjedgar char file1[MAXPATHLEN], file2[MAXPATHLEN]; 101571299Sjedgar char zfile1[MAXPATHLEN], zfile2[MAXPATHLEN]; 101680638Sobrien char jfile1[MAXPATHLEN]; 101794352Ssheldonh char tfile[MAXPATHLEN]; 101859003Shm int notified, need_notification, fd, _numdays; 101959003Shm struct stat st; 102013244Sgraichen 102159004Shm if (archtodir) { 102259004Shm char *p; 102313244Sgraichen 102459004Shm /* build complete name of archive directory into dirpart */ 102559004Shm if (*archdirname == '/') { /* absolute */ 102671299Sjedgar strlcpy(dirpart, archdirname, sizeof(dirpart)); 102759004Shm } else { /* relative */ 102859004Shm /* get directory part of logfile */ 102971299Sjedgar strlcpy(dirpart, log, sizeof(dirpart)); 103059004Shm if ((p = rindex(dirpart, '/')) == NULL) 103159004Shm dirpart[0] = '\0'; 103259004Shm else 103359004Shm *(p + 1) = '\0'; 103471299Sjedgar strlcat(dirpart, archdirname, sizeof(dirpart)); 103559004Shm } 103659004Shm 103759004Shm /* check if archive directory exists, if not, create it */ 103859004Shm if (lstat(dirpart, &st)) 103959004Shm createdir(dirpart); 104059004Shm 104159004Shm /* get filename part of logfile */ 104259004Shm if ((p = rindex(log, '/')) == NULL) 104371299Sjedgar strlcpy(namepart, log, sizeof(namepart)); 104459004Shm else 104571299Sjedgar strlcpy(namepart, p + 1, sizeof(namepart)); 104659004Shm 104759004Shm /* name of oldest log */ 104880646Sobrien (void) snprintf(file1, sizeof(file1), "%s/%s.%d", dirpart, 104980646Sobrien namepart, numdays); 105071299Sjedgar (void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1, 105171299Sjedgar COMPRESS_POSTFIX); 105280638Sobrien snprintf(jfile1, sizeof(jfile1), "%s%s", file1, 105380638Sobrien BZCOMPRESS_POSTFIX); 105459004Shm } else { 105559004Shm /* name of oldest log */ 105671299Sjedgar (void) snprintf(file1, sizeof(file1), "%s.%d", log, numdays); 105771299Sjedgar (void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1, 105871299Sjedgar COMPRESS_POSTFIX); 105980638Sobrien snprintf(jfile1, sizeof(jfile1), "%s%s", file1, 106080638Sobrien BZCOMPRESS_POSTFIX); 106159004Shm } 106259004Shm 106359003Shm if (noaction) { 1064111967Sgad printf("\trm -f %s\n", file1); 1065111967Sgad printf("\trm -f %s\n", zfile1); 1066111967Sgad printf("\trm -f %s\n", jfile1); 106759003Shm } else { 106859003Shm (void) unlink(file1); 106959003Shm (void) unlink(zfile1); 107080638Sobrien (void) unlink(jfile1); 107159003Shm } 107213244Sgraichen 107359003Shm /* Move down log files */ 107418188Sjkh _numdays = numdays; /* preserve */ 107559003Shm while (numdays--) { 107659004Shm 107771299Sjedgar (void) strlcpy(file2, file1, sizeof(file2)); 107859004Shm 107959004Shm if (archtodir) 108080646Sobrien (void) snprintf(file1, sizeof(file1), "%s/%s.%d", 108180646Sobrien dirpart, namepart, numdays); 108259004Shm else 108380646Sobrien (void) snprintf(file1, sizeof(file1), "%s.%d", log, 108480646Sobrien numdays); 108559004Shm 108671299Sjedgar (void) strlcpy(zfile1, file1, sizeof(zfile1)); 108771299Sjedgar (void) strlcpy(zfile2, file2, sizeof(zfile2)); 108859003Shm if (lstat(file1, &st)) { 108980646Sobrien (void) strlcat(zfile1, COMPRESS_POSTFIX, 109080646Sobrien sizeof(zfile1)); 109180646Sobrien (void) strlcat(zfile2, COMPRESS_POSTFIX, 109280646Sobrien sizeof(zfile2)); 109380638Sobrien if (lstat(zfile1, &st)) { 109480638Sobrien strlcpy(zfile1, file1, sizeof(zfile1)); 109580638Sobrien strlcpy(zfile2, file2, sizeof(zfile2)); 109680638Sobrien strlcat(zfile1, BZCOMPRESS_POSTFIX, 109780638Sobrien sizeof(zfile1)); 109880638Sobrien strlcat(zfile2, BZCOMPRESS_POSTFIX, 109980638Sobrien sizeof(zfile2)); 110080638Sobrien if (lstat(zfile1, &st)) 110180638Sobrien continue; 110280638Sobrien } 110359003Shm } 110459003Shm if (noaction) { 1105111967Sgad printf("\tmv %s %s\n", zfile1, zfile2); 1106111967Sgad printf("\tchmod %o %s\n", ent->permissions, zfile2); 1107111779Sgad if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) 1108111967Sgad printf("\tchown %u:%u %s\n", 1109111779Sgad ent->uid, ent->gid, zfile2); 111059003Shm } else { 111159003Shm (void) rename(zfile1, zfile2); 1112111780Sgad if (chmod(zfile2, ent->permissions)) 1113111780Sgad warn("can't chmod %s", file2); 1114111779Sgad if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) 1115111779Sgad if (chown(zfile2, ent->uid, ent->gid)) 1116111779Sgad warn("can't chown %s", zfile2); 111759003Shm } 111859003Shm } 1119111388Sgad if (!noaction && !(flags & CE_BINARY)) { 1120111388Sgad /* Report the trimming to the old log */ 1121111779Sgad (void) log_trim(log, ent); 1122111388Sgad } 112313244Sgraichen 112418188Sjkh if (!_numdays) { 112518075Sjkh if (noaction) 1126111967Sgad printf("\trm %s\n", log); 112718075Sjkh else 112859003Shm (void) unlink(log); 112959003Shm } else { 113018075Sjkh if (noaction) 1131111967Sgad printf("\tmv %s to %s\n", log, file1); 113259004Shm else { 113359004Shm if (archtodir) 1134111780Sgad movefile(log, file1, ent->permissions, ent->uid, 1135111779Sgad ent->gid); 113659004Shm else 113759004Shm (void) rename(log, file1); 113859004Shm } 113918075Sjkh } 114018075Sjkh 1141111781Sgad /* Now move the new log file into place */ 1142111967Sgad strlcpy(tfile, log, sizeof(tfile)); 1143111967Sgad strlcat(tfile, ".XXXXXX", sizeof(tfile)); 1144111967Sgad if (noaction) { 1145111781Sgad printf("Start new log...\n"); 1146111967Sgad printf("\tmktemp %s\n", tfile); 1147111967Sgad } else { 114894352Ssheldonh mkstemp(tfile); 1149111780Sgad fd = creat(tfile, ent->permissions); 115059003Shm if (fd < 0) 115159003Shm err(1, "can't start new log"); 1152111779Sgad if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) 1153111779Sgad if (fchown(fd, ent->uid, ent->gid)) 1154111779Sgad err(1, "can't chown new log file"); 115559003Shm (void) close(fd); 1156111388Sgad if (!(flags & CE_BINARY)) { 1157111388Sgad /* Add status message to new log file */ 1158111779Sgad if (log_trim(tfile, ent)) 115959003Shm err(1, "can't add status message to log"); 1160111388Sgad } 116159003Shm } 1162111967Sgad if (noaction) { 1163111967Sgad printf("\tchmod %o %s\n", ent->permissions, tfile); 1164111967Sgad printf("\tmv %s %s\n", tfile, log); 1165111967Sgad } else { 1166111780Sgad (void) chmod(tfile, ent->permissions); 116794352Ssheldonh if (rename(tfile, log) < 0) { 116894352Ssheldonh err(1, "can't start new log"); 116994352Ssheldonh (void) unlink(tfile); 117094352Ssheldonh } 117194352Ssheldonh } 117225443Sache 1173111966Sgad /* 1174111966Sgad * Find out if there is a process to signal. If nosignal (-s) was 1175111966Sgad * specified, then do not signal any process. Note that nosignal 1176111966Sgad * will trigger a warning message if the rotated logfile needs to 1177111966Sgad * be compressed, *unless* -R was specified. This is because there 1178111966Sgad * presumably still are process(es) writing to the old logfile, but 1179111966Sgad * we assume that a -sR request comes from a process which writes 1180111966Sgad * to the logfile, and as such, that process has already made sure 1181111966Sgad * that the logfile is not presently in use. 1182111966Sgad */ 118325443Sache need_notification = notified = 0; 1184111779Sgad if (ent->pid_file != NULL) { 118525443Sache need_notification = 1; 1186111966Sgad if (!nosignal) 1187112003Sgad notified = send_signal(ent); /* the normal case! */ 1188111966Sgad else if (rotatereq) 1189111966Sgad need_notification = 0; 119025443Sache } 1191112003Sgad 119280638Sobrien if ((flags & CE_COMPACT) || (flags & CE_BZCOMPACT)) { 119325443Sache if (need_notification && !notified) 119480646Sobrien warnx( 1195112003Sgad "log %s.0 not compressed because daemon(s) not notified", 119680646Sobrien log); 119725443Sache else if (noaction) 1198111967Sgad if (flags & CE_COMPACT) 1199111967Sgad printf("\tgzip %s.0\n", log); 1200111967Sgad else 1201111967Sgad printf("\tbzip2 %s.0\n", log); 120225443Sache else { 120325443Sache if (notified) { 120425443Sache if (verbose) 1205112003Sgad printf("small pause to allow daemon(s) to close log\n"); 120631460Sache sleep(10); 120725443Sache } 120859004Shm if (archtodir) { 120980646Sobrien (void) snprintf(file1, sizeof(file1), "%s/%s", 121080646Sobrien dirpart, namepart); 121180638Sobrien if (flags & CE_COMPACT) 1212107916Ssobomax compress_log(file1, 1213107916Ssobomax flags & CE_COMPACTWAIT); 121480638Sobrien else if (flags & CE_BZCOMPACT) 1215107916Ssobomax bzcompress_log(file1, 1216107916Ssobomax flags & CE_COMPACTWAIT); 121759004Shm } else { 121880638Sobrien if (flags & CE_COMPACT) 1219107916Ssobomax compress_log(log, 1220107916Ssobomax flags & CE_COMPACTWAIT); 122180638Sobrien else if (flags & CE_BZCOMPACT) 1222107916Ssobomax bzcompress_log(log, 1223107916Ssobomax flags & CE_COMPACTWAIT); 122459004Shm } 122525443Sache } 122659003Shm } 122713244Sgraichen} 122813244Sgraichen 122913244Sgraichen/* Log the fact that the logs were turned over */ 123059004Shmstatic int 1231111768Sgadlog_trim(const char *log, const struct conf_entry *log_ent) 123213244Sgraichen{ 123359003Shm FILE *f; 1234111388Sgad const char *xtra; 123559003Shm 123659003Shm if ((f = fopen(log, "a")) == NULL) 123759003Shm return (-1); 1238111388Sgad xtra = ""; 1239111768Sgad if (log_ent->def_cfg) 1240111388Sgad xtra = " using <default> rule"; 1241111772Sgad if (log_ent->r_reason != NULL) 1242111772Sgad fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s%s\n", 1243111772Sgad daytime, hostname, (int) getpid(), log_ent->r_reason, xtra); 1244111772Sgad else 1245111772Sgad fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s\n", 1246111772Sgad daytime, hostname, (int) getpid(), xtra); 124759003Shm if (fclose(f) == EOF) 124859003Shm err(1, "log_trim: fclose:"); 124959003Shm return (0); 125013244Sgraichen} 125113244Sgraichen 125259004Shm/* Fork of gzip to compress the old log file */ 125359004Shmstatic void 1254107916Ssobomaxcompress_log(char *log, int dowait) 125513244Sgraichen{ 125659003Shm pid_t pid; 125771299Sjedgar char tmp[MAXPATHLEN]; 125859003Shm 1259107916Ssobomax while (dowait && (wait(NULL) > 0 || errno == EINTR)) 1260107916Ssobomax ; 126171299Sjedgar (void) snprintf(tmp, sizeof(tmp), "%s.0", log); 126225443Sache pid = fork(); 126359003Shm if (pid < 0) 126480638Sobrien err(1, "gzip fork"); 126559003Shm else if (!pid) { 126679452Sbrian (void) execl(_PATH_GZIP, _PATH_GZIP, "-f", tmp, (char *)0); 126743071Swollman err(1, _PATH_GZIP); 126859003Shm } 126913244Sgraichen} 127013244Sgraichen 127180638Sobrien/* Fork of bzip2 to compress the old log file */ 127280638Sobrienstatic void 1273107916Ssobomaxbzcompress_log(char *log, int dowait) 127480638Sobrien{ 127580638Sobrien pid_t pid; 127680638Sobrien char tmp[MAXPATHLEN]; 127780638Sobrien 1278107916Ssobomax while (dowait && (wait(NULL) > 0 || errno == EINTR)) 1279107916Ssobomax ; 128080638Sobrien snprintf(tmp, sizeof(tmp), "%s.0", log); 128180638Sobrien pid = fork(); 128280638Sobrien if (pid < 0) 128380638Sobrien err(1, "bzip2 fork"); 128480638Sobrien else if (!pid) { 128586360Sobrien execl(_PATH_BZIP2, _PATH_BZIP2, "-f", tmp, (char *)0); 128680638Sobrien err(1, _PATH_BZIP2); 128780638Sobrien } 128880638Sobrien} 128980638Sobrien 129013244Sgraichen/* Return size in kilobytes of a file */ 129159004Shmstatic int 129259004Shmsizefile(char *file) 129313244Sgraichen{ 129459003Shm struct stat sb; 129513244Sgraichen 129659003Shm if (stat(file, &sb) < 0) 129759003Shm return (-1); 129859003Shm return (kbytes(dbtob(sb.st_blocks))); 129913244Sgraichen} 130013244Sgraichen 130113244Sgraichen/* Return the age of old log file (file.0) */ 130259004Shmstatic int 130359004Shmage_old_log(char *file) 130413244Sgraichen{ 130559003Shm struct stat sb; 130659003Shm char tmp[MAXPATHLEN + sizeof(".0") + sizeof(COMPRESS_POSTFIX) + 1]; 130713244Sgraichen 130859004Shm if (archtodir) { 130959004Shm char *p; 131059004Shm 131159004Shm /* build name of archive directory into tmp */ 131259004Shm if (*archdirname == '/') { /* absolute */ 131371299Sjedgar strlcpy(tmp, archdirname, sizeof(tmp)); 131459004Shm } else { /* relative */ 131559004Shm /* get directory part of logfile */ 131671299Sjedgar strlcpy(tmp, file, sizeof(tmp)); 131759004Shm if ((p = rindex(tmp, '/')) == NULL) 131859004Shm tmp[0] = '\0'; 131959004Shm else 132059004Shm *(p + 1) = '\0'; 132171299Sjedgar strlcat(tmp, archdirname, sizeof(tmp)); 132259004Shm } 132359004Shm 132471299Sjedgar strlcat(tmp, "/", sizeof(tmp)); 132559004Shm 132659004Shm /* get filename part of logfile */ 132759004Shm if ((p = rindex(file, '/')) == NULL) 132871299Sjedgar strlcat(tmp, file, sizeof(tmp)); 132959004Shm else 133071299Sjedgar strlcat(tmp, p + 1, sizeof(tmp)); 133159004Shm } else { 133271299Sjedgar (void) strlcpy(tmp, file, sizeof(tmp)); 133359004Shm } 133459004Shm 133559003Shm if (stat(strcat(tmp, ".0"), &sb) < 0) 133659003Shm if (stat(strcat(tmp, COMPRESS_POSTFIX), &sb) < 0) 133759003Shm return (-1); 1338111781Sgad return ((int)(timenow - sb.st_mtime + 1800) / 3600); 133913244Sgraichen} 134013244Sgraichen 134113244Sgraichen/* Skip Over Blanks */ 1342111820Sgadstatic char * 134359004Shmsob(char *p) 134413244Sgraichen{ 134559003Shm while (p && *p && isspace(*p)) 134659003Shm p++; 134759003Shm return (p); 134813244Sgraichen} 134913244Sgraichen 135013244Sgraichen/* Skip Over Non-Blanks */ 1351111820Sgadstatic char * 135259004Shmson(char *p) 135313244Sgraichen{ 135459003Shm while (p && *p && !isspace(*p)) 135559003Shm p++; 135659003Shm return (p); 135713244Sgraichen} 135843071Swollman 135943071Swollman/* 136059004Shm * Parse a limited subset of ISO 8601. The specific format is as follows: 136143071Swollman * 136259004Shm * [CC[YY[MM[DD]]]][THH[MM[SS]]] (where `T' is the literal letter) 136343071Swollman * 136459004Shm * We don't accept a timezone specification; missing fields (including timezone) 136559004Shm * are defaulted to the current date but time zero. 136643071Swollman */ 136743071Swollmanstatic time_t 136893659Scjcparse8601(char *s, char *errline) 136943071Swollman{ 137059003Shm char *t; 137193659Scjc time_t tsecs; 137259003Shm struct tm tm, *tmp; 137359003Shm u_long ul; 137443071Swollman 137543071Swollman tmp = localtime(&timenow); 137643071Swollman tm = *tmp; 137743071Swollman 137843071Swollman tm.tm_hour = tm.tm_min = tm.tm_sec = 0; 137943071Swollman 138043071Swollman ul = strtoul(s, &t, 10); 138143071Swollman if (*t != '\0' && *t != 'T') 1382111392Sgad return (-1); 138343071Swollman 138443071Swollman /* 138559003Shm * Now t points either to the end of the string (if no time was 138659003Shm * provided) or to the letter `T' which separates date and time in 138759003Shm * ISO 8601. The pointer arithmetic is the same for either case. 138843071Swollman */ 138943071Swollman switch (t - s) { 139043071Swollman case 8: 139143071Swollman tm.tm_year = ((ul / 1000000) - 19) * 100; 139243071Swollman ul = ul % 1000000; 139343071Swollman case 6: 139480666Swollman tm.tm_year -= tm.tm_year % 100; 139543071Swollman tm.tm_year += ul / 10000; 139643071Swollman ul = ul % 10000; 139743071Swollman case 4: 139843071Swollman tm.tm_mon = (ul / 100) - 1; 139943071Swollman ul = ul % 100; 140043071Swollman case 2: 140143071Swollman tm.tm_mday = ul; 140243071Swollman case 0: 140343071Swollman break; 140443071Swollman default: 1405111392Sgad return (-1); 140643071Swollman } 140743071Swollman 140843071Swollman /* sanity check */ 140943071Swollman if (tm.tm_year < 70 || tm.tm_mon < 0 || tm.tm_mon > 12 141043071Swollman || tm.tm_mday < 1 || tm.tm_mday > 31) 1411111392Sgad return (-1); 141243071Swollman 141343071Swollman if (*t != '\0') { 141443071Swollman s = ++t; 141543071Swollman ul = strtoul(s, &t, 10); 141643071Swollman if (*t != '\0' && !isspace(*t)) 1417111392Sgad return (-1); 141843071Swollman 141943071Swollman switch (t - s) { 142043071Swollman case 6: 142143071Swollman tm.tm_sec = ul % 100; 142243071Swollman ul /= 100; 142343071Swollman case 4: 142443071Swollman tm.tm_min = ul % 100; 142543071Swollman ul /= 100; 142643071Swollman case 2: 142743071Swollman tm.tm_hour = ul; 142843071Swollman case 0: 142943071Swollman break; 143043071Swollman default: 1431111392Sgad return (-1); 143243071Swollman } 143343071Swollman 143443071Swollman /* sanity check */ 143543071Swollman if (tm.tm_sec < 0 || tm.tm_sec > 60 || tm.tm_min < 0 143643071Swollman || tm.tm_min > 59 || tm.tm_hour < 0 || tm.tm_hour > 23) 1437111392Sgad return (-1); 143843071Swollman } 143993659Scjc if ((tsecs = mktime(&tm)) == -1) 144099209Smaxim errx(1, "nonexistent time:\n%s", errline); 1441111392Sgad return (tsecs); 144243071Swollman} 144359004Shm 144459004Shm/* physically move file */ 144559004Shmstatic void 1446111779Sgadmovefile(char *from, char *to, int perm, uid_t owner_uid, gid_t group_gid) 144759004Shm{ 144859004Shm FILE *src, *dst; 144959004Shm int c; 145059004Shm 145159004Shm if ((src = fopen(from, "r")) == NULL) 145259004Shm err(1, "can't fopen %s for reading", from); 145359004Shm if ((dst = fopen(to, "w")) == NULL) 145459004Shm err(1, "can't fopen %s for writing", to); 1455111779Sgad if (owner_uid != (uid_t)-1 || group_gid != (gid_t)-1) { 1456111779Sgad if (fchown(fileno(dst), owner_uid, group_gid)) 1457111779Sgad err(1, "can't fchown %s", to); 1458111779Sgad } 145959004Shm if (fchmod(fileno(dst), perm)) 146059004Shm err(1, "can't fchmod %s", to); 146159004Shm 146259004Shm while ((c = getc(src)) != EOF) { 146359004Shm if ((putc(c, dst)) == EOF) 146459004Shm err(1, "error writing to %s", to); 146559004Shm } 146659004Shm 146759004Shm if (ferror(src)) 146859004Shm err(1, "error reading from %s", from); 146959004Shm if ((fclose(src)) != 0) 147059004Shm err(1, "can't fclose %s", to); 147159004Shm if ((fclose(dst)) != 0) 147259004Shm err(1, "can't fclose %s", from); 147359004Shm if ((unlink(from)) != 0) 147459004Shm err(1, "can't unlink %s", from); 147559004Shm} 147659004Shm 147759004Shm/* create one or more directory components of a path */ 147859004Shmstatic void 147959004Shmcreatedir(char *dirpart) 148059004Shm{ 1481111398Sgad int res; 148259004Shm char *s, *d; 148371299Sjedgar char mkdirpath[MAXPATHLEN]; 148459004Shm struct stat st; 148559004Shm 148659004Shm s = dirpart; 148759004Shm d = mkdirpath; 148859004Shm 148959004Shm for (;;) { 149059004Shm *d++ = *s++; 1491111398Sgad if (*s != '/' && *s != '\0') 1492111398Sgad continue; 1493111398Sgad *d = '\0'; 1494111398Sgad res = lstat(mkdirpath, &st); 1495111398Sgad if (res != 0) { 1496111398Sgad if (noaction) { 1497111967Sgad printf("\tmkdir %s\n", mkdirpath); 1498111398Sgad } else { 1499111398Sgad res = mkdir(mkdirpath, 0755); 1500111398Sgad if (res != 0) 1501111398Sgad err(1, "Error on mkdir(\"%s\") for -a", 1502111398Sgad mkdirpath); 1503111398Sgad } 150459004Shm } 150559004Shm if (*s == '\0') 150659004Shm break; 150759004Shm } 1508111398Sgad if (verbose) 1509111398Sgad printf("created directory '%s' for -a\n", dirpart); 151059004Shm} 151159004Shm 151259004Shm/*- 151359004Shm * Parse a cyclic time specification, the format is as follows: 151459004Shm * 151559004Shm * [Dhh] or [Wd[Dhh]] or [Mdd[Dhh]] 151659004Shm * 151759004Shm * to rotate a logfile cyclic at 151859004Shm * 151959004Shm * - every day (D) within a specific hour (hh) (hh = 0...23) 152059004Shm * - once a week (W) at a specific day (d) OR (d = 0..6, 0 = Sunday) 152159004Shm * - once a month (M) at a specific day (d) (d = 1..31,l|L) 152259004Shm * 152359004Shm * We don't accept a timezone specification; missing fields 152459004Shm * are defaulted to the current date but time zero. 152559004Shm */ 152659004Shmstatic time_t 152793659ScjcparseDWM(char *s, char *errline) 152859004Shm{ 152959004Shm char *t; 153093659Scjc time_t tsecs; 153159004Shm struct tm tm, *tmp; 153280742Sobrien long l; 153359004Shm int nd; 153459004Shm static int mtab[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; 153559004Shm int WMseen = 0; 153659004Shm int Dseen = 0; 153759004Shm 153859004Shm tmp = localtime(&timenow); 153959004Shm tm = *tmp; 154059004Shm 154159004Shm /* set no. of days per month */ 154259004Shm 154359004Shm nd = mtab[tm.tm_mon]; 154459004Shm 154559004Shm if (tm.tm_mon == 1) { 154659004Shm if (((tm.tm_year + 1900) % 4 == 0) && 154759004Shm ((tm.tm_year + 1900) % 100 != 0) && 154859004Shm ((tm.tm_year + 1900) % 400 == 0)) { 154959004Shm nd++; /* leap year, 29 days in february */ 155059004Shm } 155159004Shm } 155259004Shm tm.tm_hour = tm.tm_min = tm.tm_sec = 0; 155359004Shm 155459004Shm for (;;) { 155559004Shm switch (*s) { 155659004Shm case 'D': 155759004Shm if (Dseen) 1558111392Sgad return (-1); 155959004Shm Dseen++; 156059004Shm s++; 156180742Sobrien l = strtol(s, &t, 10); 156280742Sobrien if (l < 0 || l > 23) 1563111392Sgad return (-1); 156480742Sobrien tm.tm_hour = l; 156559004Shm break; 156659004Shm 156759004Shm case 'W': 156859004Shm if (WMseen) 1569111392Sgad return (-1); 157059004Shm WMseen++; 157159004Shm s++; 157280742Sobrien l = strtol(s, &t, 10); 157380742Sobrien if (l < 0 || l > 6) 1574111392Sgad return (-1); 157580742Sobrien if (l != tm.tm_wday) { 157659004Shm int save; 157759004Shm 157880742Sobrien if (l < tm.tm_wday) { 157959004Shm save = 6 - tm.tm_wday; 158080742Sobrien save += (l + 1); 158159004Shm } else { 158280742Sobrien save = l - tm.tm_wday; 158359004Shm } 158459004Shm 158559004Shm tm.tm_mday += save; 158659004Shm 158759004Shm if (tm.tm_mday > nd) { 158859004Shm tm.tm_mon++; 158959004Shm tm.tm_mday = tm.tm_mday - nd; 159059004Shm } 159159004Shm } 159259004Shm break; 159359004Shm 159459004Shm case 'M': 159559004Shm if (WMseen) 1596111392Sgad return (-1); 159759004Shm WMseen++; 159859004Shm s++; 159959004Shm if (tolower(*s) == 'l') { 160059004Shm tm.tm_mday = nd; 160159004Shm s++; 160259004Shm t = s; 160359004Shm } else { 160480742Sobrien l = strtol(s, &t, 10); 160580742Sobrien if (l < 1 || l > 31) 1606111392Sgad return (-1); 160759004Shm 160880742Sobrien if (l > nd) 1609111392Sgad return (-1); 161080742Sobrien tm.tm_mday = l; 161159004Shm } 161259004Shm break; 161359004Shm 161459004Shm default: 161559004Shm return (-1); 161659004Shm break; 161759004Shm } 161859004Shm 161959004Shm if (*t == '\0' || isspace(*t)) 162059004Shm break; 162159004Shm else 162259004Shm s = t; 162359004Shm } 162493659Scjc if ((tsecs = mktime(&tm)) == -1) 162599209Smaxim errx(1, "nonexistent time:\n%s", errline); 1626111392Sgad return (tsecs); 162759004Shm} 1628