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458f14b7 | 1 | /* $Id: initlog.c,v 1.3 1999/12/15 18:41:08 misiek Exp $ */ |
cee18a41 AM |
2 | |
3 | #include <errno.h> | |
4 | #include <fcntl.h> | |
5 | #include <libintl.h> | |
6 | #include <locale.h> | |
7 | #include <stdio.h> | |
8 | #include <stdlib.h> | |
9 | #include <string.h> | |
10 | #include <unistd.h> | |
11 | ||
12 | #define SYSLOG_NAMES | |
13 | #include <syslog.h> | |
14 | ||
15 | #include <sys/stat.h> | |
16 | #include <sys/wait.h> | |
17 | ||
18 | #define _(String) gettext((String)) | |
19 | ||
20 | #include <popt.h> | |
21 | ||
458f14b7 AM |
22 | #include <regex.h> |
23 | ||
cee18a41 AM |
24 | #include "initlog.h" |
25 | #include "process.h" | |
26 | ||
458f14b7 | 27 | static int logfacility=LOG_DAEMON; |
cee18a41 AM |
28 | static int logpriority=LOG_NOTICE; |
29 | static int reexec=0; | |
30 | static int quiet=0; | |
31 | int debug=0; | |
32 | ||
458f14b7 AM |
33 | regex_t **regList = NULL; |
34 | ||
cee18a41 AM |
35 | static int logEntries = 0; |
36 | struct logInfo *logData = NULL; | |
37 | ||
458f14b7 AM |
38 | void readConfiguration(char *fname) { |
39 | int fd,num=0; | |
40 | struct stat sbuf; | |
41 | char *data,*line; | |
42 | regex_t *regexp; | |
43 | int lfac=-1,lpri=-1; | |
44 | ||
45 | if ((fd=open(fname,O_RDONLY))==-1) return; | |
46 | if (fstat(fd,&sbuf)) { | |
47 | close(fd); | |
48 | return; | |
49 | } | |
50 | data=malloc(sbuf.st_size+1); | |
51 | if (read(fd,data,sbuf.st_size)!=sbuf.st_size) { | |
52 | close(fd); | |
53 | return; | |
54 | } | |
55 | close(fd); | |
56 | data[sbuf.st_size] = '\0'; | |
57 | while ((line=getLine(&data))) { | |
58 | if (line[0]=='#') continue; | |
59 | if (!strncmp(line,"ignore ",7)) { | |
60 | regexp = malloc(sizeof(regex_t)); | |
61 | if (!regcomp(regexp,line+7,REG_EXTENDED|REG_NOSUB|REG_NEWLINE)) { | |
62 | regList = realloc(regList,(num+2) * sizeof(regex_t *)); | |
63 | regList[num] = regexp; | |
64 | regList[num+1] = NULL; | |
65 | num++; | |
66 | } | |
67 | } | |
68 | if (!strncmp(line,"facility ",9)) { | |
69 | lfac=atoi(line+9); | |
70 | if ((lfac == 0) && strcmp(line+9,"0")) { | |
71 | int x =0; | |
72 | ||
73 | lfac = LOG_DAEMON; | |
74 | for (x=0;facilitynames[x].c_name;x++) { | |
75 | if (!strcmp(line+9,facilitynames[x].c_name)) { | |
76 | lfac = facilitynames[x].c_val; | |
77 | break; | |
78 | } | |
79 | } | |
80 | } | |
81 | } | |
82 | if (!strncmp(line,"priority ",9)) { | |
83 | lpri = atoi(line+9); | |
84 | if ((lpri == 0) && strcmp(line+9,"0")) { | |
85 | int x=0; | |
86 | ||
87 | lpri = LOG_NOTICE; | |
88 | for (x=0;prioritynames[x].c_name;x++) { | |
89 | if (!strcmp(line+9,prioritynames[x].c_name)) { | |
90 | lpri = prioritynames[x].c_val; | |
91 | break; | |
92 | } | |
93 | } | |
94 | } | |
95 | } | |
96 | } | |
97 | if (lfac!=-1) logfacility=lfac; | |
98 | if (lpri!=-1) logpriority=lpri; | |
99 | } | |
100 | ||
cee18a41 AM |
101 | char *getLine(char **data) { |
102 | /* Get one line from data */ | |
458f14b7 AM |
103 | /* Anything up to a carraige return (\r) or a backspace (\b) is discarded. */ |
104 | /* If this really bothers you, mail me and I might make it configurable. */ | |
105 | /* It's here to avoid confilcts with fsck's progress bar. */ | |
cee18a41 AM |
106 | char *x, *y; |
107 | ||
108 | if (!*data) return NULL; | |
458f14b7 AM |
109 | x=*data; |
110 | while (*x && (*x != '\n')) { | |
111 | while (*x && (*x != '\n') && (*x != '\r') && (*x != '\b')) x++; | |
112 | if (*x && (*x=='\r' || *x =='\b')) { | |
113 | *data = x+1; | |
114 | x++; | |
115 | } | |
116 | } | |
cee18a41 AM |
117 | if (*x) { |
118 | x++; | |
119 | } else { | |
120 | if (x-*data) { | |
121 | y=malloc(x-*data+1); | |
122 | y[x-*data] = 0; | |
123 | y[x-*data-1] = '\n'; | |
124 | memcpy(y,*data,x-*data); | |
125 | } else { | |
126 | y=NULL; | |
127 | } | |
128 | *data = NULL; | |
129 | return y; | |
130 | } | |
131 | y = malloc(x-*data); | |
132 | y[x-*data-1] = 0; | |
133 | memcpy(y,*data,x-*data-1); | |
134 | *data = x; | |
135 | return y; | |
136 | } | |
137 | ||
138 | char **toArray(char *line, int *num) { | |
139 | /* Converts a long string into an array of lines. */ | |
140 | char **lines; | |
141 | char *tmpline; | |
142 | ||
143 | *num = 0; | |
144 | lines = NULL; | |
145 | ||
146 | while ((tmpline=getLine(&line))) { | |
147 | if (!*num) | |
148 | lines = (char **) malloc(sizeof(char *)); | |
149 | else | |
150 | lines = (char **) realloc(lines, (*num+1)*sizeof(char *)); | |
151 | lines[*num] = tmpline; | |
152 | (*num)++; | |
153 | } | |
154 | return lines; | |
155 | } | |
156 | ||
157 | int startDaemon() { | |
158 | int pid; | |
159 | int rc; | |
160 | ||
161 | if ( (pid = fork()) == -1 ) { | |
162 | perror("fork"); | |
163 | return -1; | |
164 | } | |
165 | if ( pid ) { | |
166 | /* parent */ | |
167 | waitpid(pid,&rc,0); | |
168 | if (WIFEXITED(rc)) { | |
169 | DDEBUG("minilogd returned %d!\n",WEXITSTATUS(rc)); | |
170 | return WEXITSTATUS(rc); | |
171 | } | |
172 | else | |
173 | return -1; | |
174 | } else { | |
175 | int fd; | |
176 | ||
177 | fd=open("/dev/null",O_RDWR); | |
178 | dup2(fd,0); | |
179 | dup2(fd,1); | |
180 | dup2(fd,2); | |
181 | /* kid */ | |
182 | execlp("minilogd","minilogd",NULL); | |
183 | perror("exec"); | |
184 | exit(-1); | |
185 | } | |
186 | } | |
187 | ||
188 | int logLine(struct logInfo *logEnt) { | |
189 | /* Logs a line... somewhere. */ | |
458f14b7 | 190 | int x; |
cee18a41 AM |
191 | struct stat statbuf; |
192 | ||
193 | /* Don't log empty or null lines */ | |
194 | if (!logEnt->line || !strcmp(logEnt->line,"\n")) return 0; | |
195 | ||
196 | if ( ((stat(_PATH_LOG,&statbuf)==-1) ||(access("/",W_OK)==-1)) | |
197 | && startDaemon() | |
198 | ) { | |
199 | DDEBUG("starting daemon failed, pooling entry %d\n",logEntries); | |
200 | logData=realloc(logData,(logEntries+1)*sizeof(struct logInfo)); | |
201 | logData[logEntries]= (*logEnt); | |
202 | logEntries++; | |
203 | } else { | |
204 | if (logEntries>0) { | |
205 | for (x=0;x<logEntries;x++) { | |
206 | DDEBUG("flushing log entry %d =%s=\n",x,logData[x].line); | |
207 | openlog(logData[x].cmd,0,logData[x].fac); | |
208 | syslog(logData[x].pri,"%s",logData[x].line); | |
209 | closelog(); | |
210 | } | |
211 | free(logData); | |
212 | logEntries = 0; | |
213 | } | |
214 | DDEBUG("logging =%s= via syslog\n",logEnt->line); | |
215 | openlog(logEnt->cmd,0,logEnt->fac); | |
216 | syslog(logEnt->pri,"%s",logEnt->line); | |
217 | closelog(); | |
218 | } | |
219 | return 0; | |
220 | } | |
221 | ||
222 | int logEvent(char *cmd, int eventtype,char *string) { | |
223 | char *eventtable [] = { | |
224 | _("%s babbles incoherently"), | |
225 | _("%s succeeded"), | |
226 | _("%s failed"), | |
227 | _("%s cancelled at user request"), | |
228 | _("%s failed due to a failed dependency"), | |
229 | /* insert more here */ | |
230 | NULL | |
231 | }; | |
232 | int x=0,len; | |
233 | struct logInfo logentry; | |
234 | ||
235 | if (cmd) { | |
7743173d | 236 | logentry.cmd = strdup((char *)basename(cmd)); |
cee18a41 AM |
237 | if ((logentry.cmd[0] =='K' || logentry.cmd[0] == 'S') && ( 30 <= logentry.cmd[1] <= 39 ) |
238 | && ( 30 <= logentry.cmd[2] <= 39 ) ) | |
239 | logentry.cmd+=3; | |
240 | } else | |
241 | logentry.cmd = strdup(_("(none)")); | |
242 | if (!string) | |
243 | string = strdup(cmd); | |
244 | ||
245 | while (eventtable[x] && x<eventtype) x++; | |
246 | if (!(eventtable[x])) x=0; | |
247 | ||
248 | len=strlen(eventtable[x])+strlen(string); | |
249 | logentry.line=malloc(len); | |
250 | snprintf(logentry.line,len,eventtable[x],string); | |
251 | ||
252 | logentry.pri = logpriority; | |
253 | logentry.fac = logfacility; | |
254 | ||
255 | return logLine(&logentry); | |
256 | } | |
257 | ||
258 | int logString(char *cmd, char *string) { | |
259 | struct logInfo logentry; | |
260 | ||
261 | if (cmd) { | |
7743173d | 262 | logentry.cmd = strdup((char *)basename(cmd)); |
cee18a41 AM |
263 | if ((logentry.cmd[0] =='K' || logentry.cmd[0] == 'S') && ( 30 <= logentry.cmd[1] <= 39 ) |
264 | && ( 30 <= logentry.cmd[2] <= 39 ) ) | |
265 | logentry.cmd+=3; | |
266 | } else | |
267 | logentry.cmd = strdup(_("")); | |
268 | logentry.line = strdup(string); | |
269 | logentry.pri = logpriority; | |
270 | logentry.fac = logfacility; | |
271 | ||
272 | return logLine(&logentry); | |
273 | } | |
274 | ||
275 | int processArgs(int argc, char **argv, int silent) { | |
276 | char *cmdname=NULL; | |
458f14b7 | 277 | char *conffile=NULL; |
cee18a41 AM |
278 | int cmdevent=0; |
279 | char *cmd=NULL; | |
280 | char *logstring=NULL; | |
281 | char *fac=NULL,*pri=NULL; | |
458f14b7 | 282 | int lfac=-1, lpri=-1; |
cee18a41 AM |
283 | poptContext context; |
284 | int rc; | |
285 | struct poptOption optTable[] = { | |
286 | POPT_AUTOHELP | |
458f14b7 AM |
287 | { "conf", 0, POPT_ARG_STRING, &conffile, 0, |
288 | "configuration file (default: /etc/initlog.conf)", NULL | |
289 | }, | |
cee18a41 AM |
290 | { "name", 'n', POPT_ARG_STRING, &cmdname, 0, |
291 | "name of service being logged", NULL | |
292 | }, | |
293 | { "event", 'e', POPT_ARG_INT, &cmdevent, 0, | |
294 | "event being logged (see man page)", NULL | |
295 | }, | |
296 | { "cmd", 'c', POPT_ARG_STRING, &cmd, 0, | |
297 | "command to run, logging output", NULL | |
298 | }, | |
299 | { "debug", 'd', POPT_ARG_NONE, &debug, 0, | |
300 | "print lots of verbose debugging info", NULL | |
301 | }, | |
302 | { "run", 'r', POPT_ARG_STRING, &cmd, 3, | |
303 | "command to run, accepting input on open fd", NULL | |
304 | }, | |
305 | { "string", 's', POPT_ARG_STRING, &logstring, 0, | |
306 | "string to log", NULL | |
307 | }, | |
308 | { "facility", 'f', POPT_ARG_STRING, &fac, 1, | |
458f14b7 | 309 | "facility to log at (default: 'local7')", NULL |
cee18a41 AM |
310 | }, |
311 | { "priority", 'p', POPT_ARG_STRING, &pri, 2, | |
312 | "priority to log at (default: 'notice')", NULL | |
313 | }, | |
314 | { "quiet", 'q', POPT_ARG_NONE, &quiet, 0, | |
315 | "suppress stdout/stderr", NULL | |
316 | }, | |
317 | { 0, 0, 0, 0, 0, 0 } | |
318 | }; | |
319 | ||
320 | context = poptGetContext("initlog", argc, argv, optTable, 0); | |
321 | ||
322 | while ((rc = poptGetNextOpt(context)) > 0) { | |
323 | switch (rc) { | |
324 | case 1: | |
458f14b7 AM |
325 | lfac=atoi(fac); |
326 | if ((lfac == 0) && strcmp(fac,"0")) { | |
cee18a41 AM |
327 | int x =0; |
328 | ||
458f14b7 | 329 | lfac = LOG_DAEMON; |
cee18a41 AM |
330 | for (x=0;facilitynames[x].c_name;x++) { |
331 | if (!strcmp(fac,facilitynames[x].c_name)) { | |
458f14b7 | 332 | lfac = facilitynames[x].c_val; |
cee18a41 AM |
333 | break; |
334 | } | |
335 | } | |
336 | } | |
337 | break; | |
338 | case 2: | |
458f14b7 AM |
339 | lpri = atoi(pri); |
340 | if ((lpri == 0) && strcmp(pri,"0")) { | |
cee18a41 AM |
341 | int x=0; |
342 | ||
458f14b7 | 343 | lpri = LOG_NOTICE; |
cee18a41 AM |
344 | for (x=0;prioritynames[x].c_name;x++) { |
345 | if (!strcmp(pri,prioritynames[x].c_name)) { | |
458f14b7 | 346 | lpri = prioritynames[x].c_val; |
cee18a41 AM |
347 | break; |
348 | } | |
349 | } | |
350 | } | |
351 | break; | |
352 | case 3: | |
353 | reexec = 1; | |
354 | break; | |
355 | default: | |
356 | break; | |
357 | } | |
358 | } | |
359 | ||
360 | if ((rc < -1)) { | |
361 | if (!silent) | |
362 | fprintf(stderr, "%s: %s\n", | |
363 | poptBadOption(context, POPT_BADOPTION_NOALIAS), | |
364 | poptStrerror(rc)); | |
365 | ||
366 | return -1; | |
367 | } | |
368 | if ( (cmd && logstring) || (cmd && cmdname) ) { | |
369 | if (!silent) | |
370 | fprintf(stderr, _("--cmd and --run are incompatible with --string or --name\n")); | |
371 | return -1; | |
372 | } | |
373 | if ( cmdname && (!logstring && !cmdevent)) { | |
374 | if (!silent) | |
375 | fprintf(stderr, _("--name requires one of --event or --string\n")); | |
376 | return -1; | |
377 | } | |
458f14b7 AM |
378 | if (conffile) { |
379 | readConfiguration(conffile); | |
380 | } else { | |
381 | readConfiguration("/etc/initlog.conf"); | |
382 | } | |
383 | if (lpri!=-1) logpriority=lpri; | |
384 | if (lfac!=-1) logfacility=lfac; | |
cee18a41 AM |
385 | if (cmdevent) { |
386 | logEvent(cmdname,cmdevent,logstring); | |
387 | } else if (logstring) { | |
388 | logString(cmdname,logstring); | |
389 | } else if ( cmd ) { | |
390 | return(runCommand(cmd,reexec,quiet,debug)); | |
391 | } else { | |
392 | if (!silent) | |
393 | fprintf(stderr,"nothing to do!\n"); | |
394 | return -1; | |
395 | } | |
396 | return 0; | |
397 | } | |
398 | ||
399 | int main(int argc, char **argv) { | |
400 | ||
401 | setlocale(LC_ALL,""); | |
402 | bindtextdomain("initlog","/etc/locale"); | |
403 | textdomain("initlog"); | |
404 | exit(processArgs(argc,argv,0)); | |
405 | } |