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Commit | Line | Data |
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846841f4 | 1 | /* |
2ce085d2 | 2 | * The Data Control Manager for MOIRA. |
846841f4 | 3 | * |
4 | * Copyright 1987, 1988 by the Massachusetts Institute of Technology. | |
5 | * For copying and distribution information, see the file | |
6 | * "mit-copyright.h". | |
7 | * | |
8 | * $Source$ | |
9 | * $Author$ | |
10 | * $Header$ | |
11 | */ | |
12 | ||
13 | #ifndef lint | |
14 | static char rcsid_dcm_c[] = "$Header$"; | |
15 | #endif lint | |
16 | ||
17 | #include <stdio.h> | |
b91fbc27 | 18 | #include <stdlib.h> |
846841f4 | 19 | #include <update.h> |
20 | #include <sys/file.h> | |
21 | #include <sys/time.h> | |
22 | #include <sys/wait.h> | |
15fa49b5 | 23 | #include <sys/stat.h> |
b91fbc27 | 24 | #include <time.h> |
15fa49b5 | 25 | #include <fcntl.h> |
a1a0dadf | 26 | #include <signal.h> |
846841f4 | 27 | #include <ctype.h> |
2ce085d2 | 28 | #include <moira.h> |
29 | #include <moira_site.h> | |
846841f4 | 30 | #include "dcm.h" |
31 | #include "mit-copyright.h" | |
15fa49b5 | 32 | #include <unistd.h> |
b91fbc27 | 33 | #include <com_err.h> |
846841f4 | 34 | |
b91fbc27 | 35 | extern int log_flags, errno; |
846841f4 | 36 | int gqval(); |
846841f4 | 37 | |
38 | ||
39 | /* declared global so that we can get the current time from different places. */ | |
40 | struct timeval tv; | |
41 | ||
42 | ||
43 | main(argc, argv) | |
44 | int argc; | |
45 | char *argv[]; | |
46 | { | |
47 | int i; | |
48 | char **arg = argv; | |
49 | char *qargv[3]; | |
fe83b772 | 50 | char *s; |
846841f4 | 51 | int status; |
52 | ||
53 | whoami = argv[0]; | |
fe83b772 | 54 | s = getenv("DEBUG"); |
55 | dbg = s ? atoi(s) : 0; | |
846841f4 | 56 | umask(UMASK); |
57 | log_flags = 0; | |
15fa49b5 | 58 | |
59 | setvbuf(stderr, NULL, _IOLBF, BUFSIZ); | |
60 | setvbuf(stdout, NULL, _IOLBF, BUFSIZ); | |
846841f4 | 61 | |
62 | while(++arg - argv < argc) { | |
63 | if (**arg == '-') | |
64 | switch((*arg)[1]) { | |
65 | case 'd': | |
66 | dbg = atoi((*arg)[2]? *arg+2: *++arg); | |
67 | break; | |
68 | } | |
69 | } | |
70 | set_com_err_hook(dcm_com_err_hook); | |
71 | ||
72 | /* if /etc/nodcm exists, punt quietly. */ | |
185f76ce | 73 | if (!access(NODCMFILE, F_OK)) { |
846841f4 | 74 | exit(1); |
75 | } | |
76 | ||
2ce085d2 | 77 | if (status = mr_connect("")) { |
78 | com_err(whoami, status, " on mr_connect"); | |
846841f4 | 79 | leave("connect failed"); |
80 | } | |
81 | ||
2ce085d2 | 82 | if (status = mr_auth("dcm")) { |
846841f4 | 83 | com_err(whoami, status, " on \"authenticate\""); |
84 | leave("auth failed"); | |
85 | } | |
86 | ||
87 | /* if DCM is not enabled, exit after logging */ | |
88 | qargv[0] = "dcm_enable"; | |
2ce085d2 | 89 | if (status = mr_query("get_value", 1, qargv, gqval, &i)) { |
846841f4 | 90 | com_err(whoami, status, " check dcm_enable"); |
91 | leave("query failed"); | |
92 | } | |
93 | if (i == 0) { | |
94 | errno = 0; | |
95 | leave("dcm_enable not set"); | |
96 | } | |
97 | ||
98 | /* do it! */ | |
846841f4 | 99 | do_services(); |
100 | errno = 0; | |
101 | leave(""); | |
102 | } | |
103 | ||
104 | ||
105 | /* Used by the get_value query when checking for dcm_enable. */ | |
106 | ||
107 | gqval(argc, argv, hint) | |
108 | int argc; | |
109 | char **argv; | |
110 | int *hint; | |
111 | { | |
112 | *hint = atoi(argv[0]); | |
113 | return(UPCALL_STOP); | |
114 | } | |
115 | ||
116 | ||
117 | /* Used by qualified_get_server to make a list of servers to check */ | |
118 | ||
119 | qgetsv(argc, argv, sq) | |
120 | int argc; | |
121 | char **argv; | |
122 | struct save_queue *sq; | |
123 | { | |
124 | sq_save_data(sq, strsave(argv[0])); | |
125 | return(UPCALL_CONT); | |
126 | } | |
127 | ||
128 | ||
129 | /* Used by get_server_info to record all of the returned information */ | |
130 | ||
131 | getsvinfo(argc, argv, sserv) | |
132 | int argc; | |
133 | char **argv; | |
134 | struct service *sserv; | |
135 | { | |
136 | sserv->service = strsave(argv[0]); | |
137 | sserv->interval = atoi(argv[1]); | |
138 | sserv->target = strsave(argv[2]); | |
139 | sserv->script = strsave(argv[3]); | |
140 | sserv->dfgen = atoi(argv[4]); | |
141 | sserv->dfcheck = atoi(argv[5]); | |
142 | sserv->type = strsave(argv[6]); | |
143 | sserv->enable = atoi(argv[7]); | |
144 | sserv->inprogress = atoi(argv[8]); | |
145 | sserv->harderror = atoi(argv[9]); | |
146 | sserv->errmsg = strsave(argv[10]); | |
147 | return(UPCALL_STOP); | |
148 | } | |
149 | ||
150 | ||
151 | /* Scan the services and process any that need it. */ | |
152 | ||
153 | do_services() | |
154 | { | |
155 | char *qargv[6]; | |
156 | struct save_queue *sq, *sq_create(); | |
157 | char *service, dfgen_prog[64], dfgen_cmd[128]; | |
158 | struct service svc; | |
a1a0dadf | 159 | int status, lock_fd, ex, (*cstat)(); |
846841f4 | 160 | struct timezone tz; |
161 | register char *p; | |
15fa49b5 | 162 | int waits; |
163 | struct sigaction action, prevaction; | |
846841f4 | 164 | |
165 | if (dbg & DBG_VERBOSE) | |
166 | com_err(whoami, 0, "starting pass over services"); | |
167 | ||
168 | qargv[0] = "true"; | |
169 | qargv[1] = "dontcare"; | |
170 | qargv[2] = "false"; | |
171 | sq = sq_create(); | |
2ce085d2 | 172 | if (status = mr_query_with_retry("qualified_get_server", 3, qargv, |
0967ae03 | 173 | qgetsv, sq)) { |
846841f4 | 174 | com_err(whoami, status, " getting services"); |
175 | leave("query failed"); | |
176 | } | |
177 | while (sq_get_data(sq, &service)) { | |
178 | for (p = service; *p; p++) | |
179 | if (isupper(*p)) | |
180 | *p = tolower(*p); | |
181 | com_err(whoami, 0, "checking %s...", service); | |
182 | qargv[0] = service; | |
185f76ce | 183 | sprintf(dfgen_prog, "%s/%s.gen", BIN_DIR, service); |
846841f4 | 184 | if (!file_exists(dfgen_prog)) { |
185 | com_err(whoami, 0, "prog %s doesn't exist\n", dfgen_prog); | |
186 | free(service); | |
187 | continue; | |
188 | } | |
185f76ce | 189 | sprintf(dfgen_cmd, "exec %s %s/%s.out", |
190 | dfgen_prog, DCM_DIR, service); | |
846841f4 | 191 | gettimeofday(&tv, &tz); |
2ce085d2 | 192 | if (status = mr_query_with_retry("get_server_info", 1, qargv, |
0967ae03 | 193 | getsvinfo, &svc)) { |
4e5690ff | 194 | com_err(whoami, status, " getting service %s info, skipping to next service", service); |
195 | continue; | |
846841f4 | 196 | } |
197 | svc.service = strsave(service); | |
198 | qargv[0] = strsave(service); | |
199 | qargv[1] = itoa(svc.dfgen); | |
200 | qargv[2] = itoa(svc.dfcheck); | |
201 | qargv[3] = strsave("0"); | |
202 | qargv[4] = itoa(svc.harderror); | |
203 | qargv[5] = strsave(svc.errmsg); | |
204 | if (svc.interval != 0) { | |
205 | if (svc.interval * 60 + svc.dfcheck < tv.tv_sec) { | |
185f76ce | 206 | lock_fd = maybe_lock_update("@db@", service, 1); |
846841f4 | 207 | if (lock_fd < 0) |
208 | goto free_service; | |
209 | free(qargv[3]); | |
210 | free(qargv[4]); | |
211 | free(qargv[5]); | |
212 | qargv[3] = strsave("1"); | |
213 | qargv[4] = strsave("0"); | |
214 | qargv[5] = strsave(""); | |
2ce085d2 | 215 | status = mr_query_with_retry("set_server_internal_flags", 6, |
0967ae03 | 216 | qargv, scream, NULL); |
2ce085d2 | 217 | if (status != MR_SUCCESS) { |
846841f4 | 218 | com_err(whoami, status, " setting server state"); |
219 | goto free_service; | |
220 | } | |
221 | ||
222 | com_err(whoami, status, " running %s", dfgen_prog); | |
15fa49b5 | 223 | |
224 | action.sa_flags = 0; | |
225 | sigemptyset(&action.sa_mask); | |
226 | action.sa_handler = SIG_DFL; | |
227 | sigaction(SIGCHLD, &action, &prevaction); | |
228 | waits = system(dfgen_cmd); | |
229 | sigaction(SIGCHLD, &prevaction, NULL); | |
230 | if (WIFSIGNALED(waits)) { | |
95d47b7a | 231 | status = MR_COREDUMP; |
c9c95b8a | 232 | com_err(whoami, status, " %s exited on signal %d", |
15fa49b5 | 233 | dfgen_prog, WTERMSIG(waits)); |
234 | } else if (WEXITSTATUS(waits)) { | |
c9c95b8a | 235 | /* extract the process's exit value */ |
15fa49b5 | 236 | status = WEXITSTATUS(waits) + ERROR_TABLE_BASE_sms; |
846841f4 | 237 | com_err(whoami, status, " %s exited", dfgen_prog); |
238 | } | |
15fa49b5 | 239 | |
846841f4 | 240 | if (SOFT_FAIL(status)) { |
241 | free(qargv[5]); | |
242 | qargv[5] = strsave(error_message(status)); | |
2ce085d2 | 243 | } else if (status == MR_NO_CHANGE) { |
846841f4 | 244 | free(qargv[2]); |
245 | qargv[2] = itoa(tv.tv_sec); | |
246 | svc.dfcheck = tv.tv_sec; | |
2ce085d2 | 247 | } else if (status == MR_SUCCESS) { |
846841f4 | 248 | free(qargv[1]); |
249 | free(qargv[2]); | |
250 | qargv[1] = itoa(tv.tv_sec); | |
251 | qargv[2] = strsave(qargv[1]); | |
252 | svc.dfcheck = svc.dfgen = tv.tv_sec; | |
253 | } else { /* HARD_FAIL(status) */ | |
254 | free(qargv[2]); | |
255 | free(qargv[4]); | |
256 | free(qargv[5]); | |
257 | qargv[2] = itoa(tv.tv_sec); | |
258 | svc.dfcheck = tv.tv_sec; | |
259 | qargv[4] = itoa(status); | |
260 | qargv[5] = strsave(error_message(status)); | |
261 | critical_alert("DCM","DCM building config files for %s: %s", | |
262 | service, qargv[5]); | |
263 | } | |
264 | free_service: | |
265 | free(qargv[3]); | |
266 | qargv[3] = strsave("0"); | |
2ce085d2 | 267 | status = mr_query_with_retry("set_server_internal_flags", 6, |
0967ae03 | 268 | qargv, scream, NULL); |
269 | if (status) | |
270 | com_err(whoami, status, " setting service state"); | |
846841f4 | 271 | close(lock_fd); |
272 | free(qargv[0]); | |
273 | free(qargv[1]); | |
274 | free(qargv[2]); | |
275 | free(qargv[3]); | |
276 | free(qargv[4]); | |
277 | free(qargv[5]); | |
278 | } | |
279 | if (!strcmp(svc.type, "REPLICAT")) | |
280 | ex = 1; | |
281 | else | |
282 | ex = 0; | |
185f76ce | 283 | lock_fd = maybe_lock_update("@db@", service, ex); |
846841f4 | 284 | if (lock_fd >= 0) { |
285 | do_hosts(&svc); | |
286 | close(lock_fd); | |
287 | } | |
288 | } | |
289 | free(svc.service); | |
290 | free(svc.target); | |
291 | free(svc.script); | |
292 | free(svc.type); | |
293 | free(svc.errmsg); | |
294 | free(service); | |
295 | } | |
296 | sq_destroy(sq); | |
297 | } | |
298 | ||
299 | ||
300 | /* Used by qualified_get_server_host to make a list of hosts to check */ | |
301 | ||
302 | qgethost(argc, argv, sq) | |
303 | int argc; | |
304 | char **argv; | |
305 | struct save_queue *sq; | |
306 | { | |
307 | sq_save_data(sq, strsave(argv[1])); | |
308 | return(UPCALL_CONT); | |
309 | } | |
310 | ||
311 | ||
312 | /* Used by get_server_host_info to store all of the info about a host */ | |
313 | ||
314 | gethostinfo(argc, argv, shost) | |
315 | int argc; | |
316 | char **argv; | |
317 | struct svrhost *shost; | |
318 | { | |
319 | shost->service = strsave(argv[0]); | |
320 | shost->machine = strsave(argv[1]); | |
321 | shost->enable = atoi(argv[2]); | |
322 | shost->override = atoi(argv[3]); | |
323 | shost->success = atoi(argv[4]); | |
324 | shost->inprogress = atoi(argv[5]); | |
325 | shost->hosterror = atoi(argv[6]); | |
326 | shost->errmsg = strsave(argv[7]); | |
327 | shost->lasttry = atoi(argv[8]); | |
328 | shost->lastsuccess = atoi(argv[9]); | |
329 | shost->value1 = atoi(argv[10]); | |
330 | shost->value2 = atoi(argv[11]); | |
331 | shost->value3 = strsave(argv[12]); | |
332 | return(UPCALL_STOP); | |
333 | } | |
334 | ||
335 | ||
336 | /* Scans all of the hosts for a particular service, and processes them. */ | |
337 | ||
338 | do_hosts(svc) | |
339 | struct service *svc; | |
340 | { | |
341 | char *argv[9], *machine; | |
342 | int status, lock_fd; | |
343 | struct save_queue *sq; | |
344 | struct svrhost shost; | |
345 | ||
346 | sq = sq_create(); | |
347 | argv[0] = svc->service; | |
348 | argv[1] = "TRUE"; | |
349 | argv[2] = argv[3] = argv[4] = "DONTCARE"; | |
350 | argv[5] = "FALSE"; | |
2ce085d2 | 351 | status = mr_query_with_retry("qualified_get_server_host", 6, argv, |
0967ae03 | 352 | qgethost, sq); |
2ce085d2 | 353 | if (status == MR_NO_MATCH) { |
846841f4 | 354 | return; |
355 | } else if (status) { | |
356 | com_err(whoami, status, " getting server_hosts for %s", svc->service); | |
357 | return; | |
358 | } | |
359 | while (sq_get_data(sq, &machine)) { | |
360 | if (dbg & DBG_TRACE) | |
361 | com_err(whoami, 0, "checking %s...", machine); | |
362 | argv[1] = machine; | |
2ce085d2 | 363 | status = mr_query_with_retry("get_server_host_info", 2, argv, |
0967ae03 | 364 | gethostinfo, &shost); |
846841f4 | 365 | if (status) { |
366 | com_err(whoami,status, " getting server_host_info for %s", machine); | |
367 | goto free_mach; | |
368 | } | |
369 | if (!shost.enable || shost.hosterror || | |
4112693b | 370 | (shost.success && !shost.override && |
6899dfbe | 371 | shost.lastsuccess >= svc->dfgen)) { |
846841f4 | 372 | if (dbg & DBG_TRACE) |
373 | com_err(whoami, 0, "not updating %s:%s", svc->service, machine); | |
374 | goto free_mach; | |
375 | } | |
062079b1 | 376 | |
185f76ce | 377 | lock_fd = maybe_lock_update(machine, svc->service, 1); |
062079b1 | 378 | if (lock_fd < 0) |
379 | goto free_mach; | |
380 | argv[0] = svc->service; | |
381 | argv[1] = machine; | |
382 | argv[2] = argv[3] = argv[5] = "0"; | |
383 | argv[4] = "1"; | |
384 | argv[6] = strsave(""); | |
385 | argv[7] = itoa(tv.tv_sec); | |
386 | argv[8] = itoa(shost.lastsuccess); | |
2ce085d2 | 387 | status = mr_query_with_retry("set_server_host_internal", 9, argv, |
0967ae03 | 388 | scream, NULL); |
2ce085d2 | 389 | if (status != MR_SUCCESS) { |
062079b1 | 390 | com_err(whoami,status," while setting internal state for %s:%s", |
391 | svc->service, machine); | |
392 | goto free_mach; | |
393 | } | |
2ce085d2 | 394 | status = mr_update_server(svc->service, machine, svc->target, |
062079b1 | 395 | svc->script); |
2ce085d2 | 396 | if (status == MR_SUCCESS) { |
67852ff1 | 397 | argv[2] = argv[4] = "0"; |
062079b1 | 398 | argv[3] = "1"; |
399 | free(argv[8]); | |
400 | argv[8] = itoa(tv.tv_sec); | |
401 | } else if (SOFT_FAIL(status)) { | |
67852ff1 | 402 | argv[4] = "0"; |
062079b1 | 403 | free(argv[6]); |
404 | argv[6] = strsave(error_message(status)); | |
405 | } else { /* HARD_FAIL */ | |
406 | argv[2] = itoa(shost.override); | |
67852ff1 | 407 | argv[4] = "0"; |
062079b1 | 408 | argv[5] = itoa(status); |
409 | free(argv[6]); | |
410 | argv[6] = strsave(error_message(status)); | |
411 | critical_alert("DCM", "DCM updating %s:%s: %s", | |
412 | machine, svc->service, argv[6]); | |
413 | if (!strcmp(svc->type, "REPLICAT")) { | |
414 | char *qargv[6]; | |
415 | ||
416 | svc->harderror = status; | |
417 | svc->errmsg = strsave(argv[6]); | |
418 | qargv[0] = strsave(svc->service); | |
419 | qargv[1] = itoa(svc->dfgen); | |
420 | qargv[2] = itoa(svc->dfcheck); | |
421 | qargv[3] = strsave("0"); | |
422 | qargv[4] = itoa(svc->harderror); | |
423 | qargv[5] = strsave(svc->errmsg); | |
2ce085d2 | 424 | status = mr_query_with_retry("set_server_internal_flags", |
0967ae03 | 425 | 6, qargv, scream, NULL); |
426 | if (status) | |
427 | com_err(whoami, status, " setting service state again"); | |
062079b1 | 428 | free(qargv[0]); |
429 | free(qargv[1]); | |
430 | free(qargv[2]); | |
431 | free(qargv[3]); | |
432 | free(qargv[4]); | |
433 | free(qargv[5]); | |
434 | close(lock_fd); | |
2ce085d2 | 435 | status = mr_query_with_retry("set_server_host_internal", |
0967ae03 | 436 | 9, argv,scream,NULL); |
67852ff1 | 437 | free(argv[2]); |
438 | free(argv[5]); | |
0967ae03 | 439 | if (status) |
440 | com_err(whoami, status, " setting host state again"); | |
062079b1 | 441 | return(-1); |
846841f4 | 442 | } |
846841f4 | 443 | } |
062079b1 | 444 | close(lock_fd); |
2ce085d2 | 445 | status = mr_query_with_retry("set_server_host_internal", 9, argv, |
0967ae03 | 446 | scream, NULL); |
447 | if (status) | |
448 | com_err(whoami, status, " setting host state again"); | |
67852ff1 | 449 | /* free(argv[2]); |
450 | free(argv[5]); */ | |
846841f4 | 451 | free_mach: |
452 | free(machine); | |
453 | close(lock_fd); | |
454 | } | |
455 | return(0); | |
456 | } |