![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to docmd.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [CSRG BSD Unix] / 43BSD / ucb / rdist|
Return to docmd.c CVS log | Up to [CSRG BSD Unix] / 43BSD / ucb / rdist |
1.1 root 1: /*
2: * Copyright (c) 1983 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: */
6:
7: #ifndef lint
8: static char sccsid[] = "@(#)docmd.c 5.1 (Berkeley) 6/6/85";
9: #endif not lint
10:
11: #include "defs.h"
12: #include <setjmp.h>
13: #include <netdb.h>
14:
15: #ifndef RDIST
16: #define RDIST "/usr/ucb/rdist"
17: #endif
18:
19: FILE *lfp; /* log file for recording files updated */
20: struct subcmd *subcmds; /* list of sub-commands for current cmd */
21: jmp_buf env;
22:
23: int cleanup();
24: int lostconn();
25:
26: /*
27: * Do the commands in cmds (initialized by yyparse).
28: */
29: docmds(dhosts, argc, argv)
30: char **dhosts;
31: int argc;
32: char **argv;
33: {
34: register struct cmd *c;
35: register struct namelist *f;
36: register char **cpp;
37: extern struct cmd *cmds;
38:
39: signal(SIGHUP, cleanup);
40: signal(SIGINT, cleanup);
41: signal(SIGQUIT, cleanup);
42: signal(SIGTERM, cleanup);
43:
44: for (c = cmds; c != NULL; c = c->c_next) {
45: if (dhosts != NULL && *dhosts != NULL) {
46: for (cpp = dhosts; *cpp; cpp++)
47: if (strcmp(c->c_name, *cpp) == 0)
48: goto fndhost;
49: continue;
50: }
51: fndhost:
52: if (argc) {
53: for (cpp = argv; *cpp; cpp++) {
54: if (c->c_label != NULL &&
55: strcmp(c->c_label, *cpp) == 0) {
56: cpp = NULL;
57: goto found;
58: }
59: for (f = c->c_files; f != NULL; f = f->n_next)
60: if (strcmp(f->n_name, *cpp) == 0)
61: goto found;
62: }
63: continue;
64: } else
65: cpp = NULL;
66: found:
67: switch (c->c_type) {
68: case ARROW:
69: doarrow(cpp, c->c_files, c->c_name, c->c_cmds);
70: break;
71: case DCOLON:
72: dodcolon(cpp, c->c_files, c->c_name, c->c_cmds);
73: break;
74: default:
75: fatal("illegal command type %d\n", c->c_type);
76: }
77: }
78: closeconn();
79: }
80:
81: /*
82: * Process commands for sending files to other machines.
83: */
84: doarrow(filev, files, rhost, cmds)
85: char **filev;
86: struct namelist *files;
87: char *rhost;
88: struct subcmd *cmds;
89: {
90: register struct namelist *f;
91: register struct subcmd *sc;
92: register char **cpp;
93: int n, ddir, opts = options;
94:
95: if (debug)
96: printf("doarrow(%x, %s, %x)\n", files, rhost, cmds);
97:
98: if (files == NULL) {
99: error("no files to be updated\n");
100: return;
101: }
102:
103: subcmds = cmds;
104: ddir = files->n_next != NULL; /* destination is a directory */
105: if (nflag)
106: printf("updating host %s\n", rhost);
107: else {
108: if (setjmp(env))
109: goto done;
110: signal(SIGPIPE, lostconn);
111: if (!makeconn(rhost))
112: return;
113: if ((lfp = fopen(tmpfile, "w")) == NULL) {
114: fatal("cannot open %s\n", tmpfile);
115: exit(1);
116: }
117: }
118: for (f = files; f != NULL; f = f->n_next) {
119: if (filev) {
120: for (cpp = filev; *cpp; cpp++)
121: if (strcmp(f->n_name, *cpp) == 0)
122: goto found;
123: if (!nflag)
124: (void) fclose(lfp);
125: continue;
126: }
127: found:
128: n = 0;
129: for (sc = cmds; sc != NULL; sc = sc->sc_next) {
130: if (sc->sc_type != INSTALL)
131: continue;
132: n++;
133: install(f->n_name, sc->sc_name,
134: sc->sc_name == NULL ? 0 : ddir, sc->sc_options);
135: opts = sc->sc_options;
136: }
137: if (n == 0)
138: install(f->n_name, NULL, 0, options);
139: }
140: done:
141: if (!nflag) {
142: (void) signal(SIGPIPE, cleanup);
143: (void) fclose(lfp);
144: lfp = NULL;
145: }
146: for (sc = cmds; sc != NULL; sc = sc->sc_next)
147: if (sc->sc_type == NOTIFY)
148: notify(tmpfile, rhost, sc->sc_args, 0);
149: if (!nflag) {
150: (void) unlink(tmpfile);
151: for (; ihead != NULL; ihead = ihead->nextp) {
152: free(ihead);
153: if ((opts & IGNLNKS) || ihead->count == 0)
154: continue;
155: log(lfp, "%s: Warning: missing links\n",
156: ihead->pathname);
157: }
158: }
159: }
160:
161: /*
162: * Create a connection to the rdist server on the machine rhost.
163: */
164: makeconn(rhost)
165: char *rhost;
166: {
167: register char *ruser, *cp;
168: static char *cur_host = NULL;
169: static int port = -1;
170: char tuser[20];
171: int n;
172: extern char user[];
173: extern int userid;
174:
175: if (debug)
176: printf("makeconn(%s)\n", rhost);
177:
178: if (cur_host != NULL && rem >= 0) {
179: if (strcmp(cur_host, rhost) == 0)
180: return(1);
181: closeconn();
182: }
183: cur_host = rhost;
184: cp = index(rhost, '@');
185: if (cp != NULL) {
186: char c = *cp;
187:
188: *cp = '\0';
189: strncpy(tuser, rhost, sizeof(tuser)-1);
190: *cp = c;
191: rhost = cp + 1;
192: ruser = tuser;
193: if (*ruser == '\0')
194: ruser = user;
195: else if (!okname(ruser))
196: return(0);
197: } else
198: ruser = user;
199: if (!qflag)
200: printf("updating host %s\n", rhost);
201: (void) sprintf(buf, "%s -Server%s", RDIST, qflag ? " -q" : "");
202: if (port < 0) {
203: struct servent *sp;
204:
205: if ((sp = getservbyname("shell", "tcp")) == NULL)
206: fatal("shell/tcp: unknown service");
207: port = sp->s_port;
208: }
209:
210: if (debug) {
211: printf("port = %d, luser = %s, ruser = %s\n", ntohs(port), user, ruser);
212: printf("buf = %s\n", buf);
213: }
214:
215: fflush(stdout);
216: setreuid(userid, 0);
217: rem = rcmd(&rhost, port, user, ruser, buf, 0);
218: setreuid(0, userid);
219: if (rem < 0)
220: return(0);
221: cp = buf;
222: if (read(rem, cp, 1) != 1)
223: lostconn();
224: if (*cp == 'V') {
225: do {
226: if (read(rem, cp, 1) != 1)
227: lostconn();
228: } while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
229: *--cp = '\0';
230: cp = buf;
231: n = 0;
232: while (*cp >= '0' && *cp <= '9')
233: n = (n * 10) + (*cp++ - '0');
234: if (*cp == '\0' && n == VERSION)
235: return(1);
236: error("connection failed: version numbers don't match (local %d, remote %d)\n", VERSION, n);
237: } else
238: error("connection failed: version numbers don't match\n");
239: closeconn();
240: return(0);
241: }
242:
243: /*
244: * Signal end of previous connection.
245: */
246: closeconn()
247: {
248: if (debug)
249: printf("closeconn()\n");
250:
251: if (rem >= 0) {
252: (void) write(rem, "\2\n", 2);
253: (void) close(rem);
254: rem = -1;
255: }
256: }
257:
258: lostconn()
259: {
260: if (iamremote)
261: cleanup();
262: log(lfp, "rdist: lost connection\n");
263: longjmp(env, 1);
264: }
265:
266: okname(name)
267: register char *name;
268: {
269: register char *cp = name;
270: register int c;
271:
272: do {
273: c = *cp;
274: if (c & 0200)
275: goto bad;
276: if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-')
277: goto bad;
278: cp++;
279: } while (*cp);
280: return(1);
281: bad:
282: error("invalid user name %s\n", name);
283: return(0);
284: }
285:
286: time_t lastmod;
287: FILE *tfp;
288: extern char target[], *tp;
289:
290: /*
291: * Process commands for comparing files to time stamp files.
292: */
293: dodcolon(filev, files, stamp, cmds)
294: char **filev;
295: struct namelist *files;
296: char *stamp;
297: struct subcmd *cmds;
298: {
299: register struct subcmd *sc;
300: register struct namelist *f;
301: register char **cpp;
302: struct timeval tv[2];
303: struct timezone tz;
304: struct stat stb;
305:
306: if (debug)
307: printf("dodcolon()\n");
308:
309: if (files == NULL) {
310: error("no files to be updated\n");
311: return;
312: }
313: if (stat(stamp, &stb) < 0) {
314: error("%s: %s\n", stamp, sys_errlist[errno]);
315: return;
316: }
317: if (debug)
318: printf("%s: %d\n", stamp, stb.st_mtime);
319:
320: subcmds = cmds;
321: lastmod = stb.st_mtime;
322: if (nflag || (options & VERIFY))
323: tfp = NULL;
324: else {
325: if ((tfp = fopen(tmpfile, "w")) == NULL) {
326: error("%s: %s\n", stamp, sys_errlist[errno]);
327: return;
328: }
329: (void) gettimeofday(&tv[0], &tz);
330: tv[1] = tv[0];
331: (void) utimes(stamp, tv);
332: }
333:
334: for (f = files; f != NULL; f = f->n_next) {
335: if (filev) {
336: for (cpp = filev; *cpp; cpp++)
337: if (strcmp(f->n_name, *cpp) == 0)
338: goto found;
339: continue;
340: }
341: found:
342: tp = NULL;
343: cmptime(f->n_name);
344: }
345:
346: if (tfp != NULL)
347: (void) fclose(tfp);
348: for (sc = cmds; sc != NULL; sc = sc->sc_next)
349: if (sc->sc_type == NOTIFY)
350: notify(tmpfile, NULL, sc->sc_args, lastmod);
351: if (!nflag && !(options & VERIFY))
352: (void) unlink(tmpfile);
353: }
354:
355: /*
356: * Compare the mtime of file to the list of time stamps.
357: */
358: cmptime(name)
359: char *name;
360: {
361: struct stat stb;
362:
363: if (debug)
364: printf("cmptime(%s)\n", name);
365:
366: if (except(name))
367: return;
368:
369: if (nflag) {
370: printf("comparing dates: %s\n", name);
371: return;
372: }
373:
374: /*
375: * first time cmptime() is called?
376: */
377: if (tp == NULL) {
378: if (exptilde(target, name) == NULL)
379: return;
380: tp = name = target;
381: while (*tp)
382: tp++;
383: }
384: if (access(name, 4) < 0 || stat(name, &stb) < 0) {
385: error("%s: %s\n", name, sys_errlist[errno]);
386: return;
387: }
388:
389: switch (stb.st_mode & S_IFMT) {
390: case S_IFREG:
391: break;
392:
393: case S_IFDIR:
394: rcmptime(&stb);
395: return;
396:
397: default:
398: error("%s: not a plain file\n", name);
399: return;
400: }
401:
402: if (stb.st_mtime > lastmod)
403: log(tfp, "new: %s\n", name);
404: }
405:
406: rcmptime(st)
407: struct stat *st;
408: {
409: register DIR *d;
410: register struct direct *dp;
411: register char *cp;
412: char *otp;
413: int len;
414:
415: if (debug)
416: printf("rcmptime(%x)\n", st);
417:
418: if ((d = opendir(target)) == NULL) {
419: error("%s: %s\n", target, sys_errlist[errno]);
420: return;
421: }
422: otp = tp;
423: len = tp - target;
424: while (dp = readdir(d)) {
425: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
426: continue;
427: if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) {
428: error("%s/%s: Name too long\n", target, dp->d_name);
429: continue;
430: }
431: tp = otp;
432: *tp++ = '/';
433: cp = dp->d_name;
434: while (*tp++ = *cp++)
435: ;
436: tp--;
437: cmptime(target);
438: }
439: closedir(d);
440: tp = otp;
441: *tp = '\0';
442: }
443:
444: /*
445: * Notify the list of people the changes that were made.
446: * rhost == NULL if we are mailing a list of changes compared to at time
447: * stamp file.
448: */
449: notify(file, rhost, to, lmod)
450: char *file, *rhost;
451: register struct namelist *to;
452: time_t lmod;
453: {
454: register int fd, len;
455: FILE *pf, *popen();
456: struct stat stb;
457:
458: if ((options & VERIFY) || to == NULL)
459: return;
460: if (!qflag) {
461: printf("notify ");
462: if (rhost)
463: printf("@%s ", rhost);
464: prnames(to);
465: }
466: if (nflag)
467: return;
468:
469: if ((fd = open(file, 0)) < 0) {
470: error("%s: %s\n", file, sys_errlist[errno]);
471: return;
472: }
473: if (fstat(fd, &stb) < 0) {
474: error("%s: %s\n", file, sys_errlist[errno]);
475: (void) close(fd);
476: return;
477: }
478: if (stb.st_size == 0) {
479: (void) close(fd);
480: return;
481: }
482: /*
483: * Create a pipe to mailling program.
484: */
485: pf = popen(MAILCMD, "w");
486: if (pf == NULL) {
487: error("notify: \"%s\" failed\n", MAILCMD);
488: (void) close(fd);
489: return;
490: }
491: /*
492: * Output the proper header information.
493: */
494: fprintf(pf, "From: rdist (Remote distribution program)\n");
495: fprintf(pf, "To:");
496: if (!any('@', to->n_name) && rhost != NULL)
497: fprintf(pf, " %s@%s", to->n_name, rhost);
498: else
499: fprintf(pf, " %s", to->n_name);
500: to = to->n_next;
501: while (to != NULL) {
502: if (!any('@', to->n_name) && rhost != NULL)
503: fprintf(pf, ", %s@%s", to->n_name, rhost);
504: else
505: fprintf(pf, ", %s", to->n_name);
506: to = to->n_next;
507: }
508: putc('\n', pf);
509: if (rhost != NULL)
510: fprintf(pf, "Subject: files updated by rdist from %s to %s\n",
511: host, rhost);
512: else
513: fprintf(pf, "Subject: files updated after %s\n", ctime(&lmod));
514: putc('\n', pf);
515:
516: while ((len = read(fd, buf, BUFSIZ)) > 0)
517: (void) fwrite(buf, 1, len, pf);
518: (void) close(fd);
519: (void) pclose(pf);
520: }
521:
522: /*
523: * Return true if name is in the list.
524: */
525: inlist(list, file)
526: struct namelist *list;
527: char *file;
528: {
529: register struct namelist *nl;
530:
531: for (nl = list; nl != NULL; nl = nl->n_next)
532: if (!strcmp(file, nl->n_name))
533: return(1);
534: return(0);
535: }
536:
537: /*
538: * Return TRUE if file is in the exception list.
539: */
540: except(file)
541: char *file;
542: {
543: register struct subcmd *sc;
544: register struct namelist *nl;
545:
546: if (debug)
547: printf("except(%s)\n", file);
548:
549: for (sc = subcmds; sc != NULL; sc = sc->sc_next) {
550: if (sc->sc_type != EXCEPT && sc->sc_type != PATTERN)
551: continue;
552: for (nl = sc->sc_args; nl != NULL; nl = nl->n_next) {
553: if (sc->sc_type == EXCEPT) {
554: if (!strcmp(file, nl->n_name))
555: return(1);
556: continue;
557: }
558: re_comp(nl->n_name);
559: if (re_exec(file) > 0)
560: return(1);
561: }
562: }
563: return(0);
564: }
565:
566: char *
567: colon(cp)
568: register char *cp;
569: {
570:
571: while (*cp) {
572: if (*cp == ':')
573: return(cp);
574: if (*cp == '/')
575: return(0);
576: cp++;
577: }
578: return(0);
579: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.