+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)docmd.c 5.8 (Berkeley) 3/1/91";
+#endif /* not lint */
+
+#include "defs.h"
+#include <setjmp.h>
+#include <netdb.h>
+
+FILE *lfp; /* log file for recording files updated */
+struct subcmd *subcmds; /* list of sub-commands for current cmd */
+jmp_buf env;
+
+void cleanup(), lostconn();
+
+/*
+ * Do the commands in cmds (initialized by yyparse).
+ */
+docmds(dhosts, argc, argv)
+ char **dhosts;
+ int argc;
+ char **argv;
+{
+ register struct cmd *c;
+ register struct namelist *f;
+ register char **cpp;
+ extern struct cmd *cmds;
+
+ signal(SIGHUP, cleanup);
+ signal(SIGINT, cleanup);
+ signal(SIGQUIT, cleanup);
+ signal(SIGTERM, cleanup);
+
+ for (c = cmds; c != NULL; c = c->c_next) {
+ if (dhosts != NULL && *dhosts != NULL) {
+ for (cpp = dhosts; *cpp; cpp++)
+ if (strcmp(c->c_name, *cpp) == 0)
+ goto fndhost;
+ continue;
+ }
+ fndhost:
+ if (argc) {
+ for (cpp = argv; *cpp; cpp++) {
+ if (c->c_label != NULL &&
+ strcmp(c->c_label, *cpp) == 0) {
+ cpp = NULL;
+ goto found;
+ }
+ for (f = c->c_files; f != NULL; f = f->n_next)
+ if (strcmp(f->n_name, *cpp) == 0)
+ goto found;
+ }
+ continue;
+ } else
+ cpp = NULL;
+ found:
+ switch (c->c_type) {
+ case ARROW:
+ doarrow(cpp, c->c_files, c->c_name, c->c_cmds);
+ break;
+ case DCOLON:
+ dodcolon(cpp, c->c_files, c->c_name, c->c_cmds);
+ break;
+ default:
+ fatal("illegal command type %d\n", c->c_type);
+ }
+ }
+ closeconn();
+}
+
+/*
+ * Process commands for sending files to other machines.
+ */
+doarrow(filev, files, rhost, cmds)
+ char **filev;
+ struct namelist *files;
+ char *rhost;
+ struct subcmd *cmds;
+{
+ register struct namelist *f;
+ register struct subcmd *sc;
+ register char **cpp;
+ int n, ddir, opts = options;
+
+ if (debug)
+ printf("doarrow(%x, %s, %x)\n", files, rhost, cmds);
+
+ if (files == NULL) {
+ error("no files to be updated\n");
+ return;
+ }
+
+ subcmds = cmds;
+ ddir = files->n_next != NULL; /* destination is a directory */
+ if (nflag)
+ printf("updating host %s\n", rhost);
+ else {
+ if (setjmp(env))
+ goto done;
+ signal(SIGPIPE, lostconn);
+ if (!makeconn(rhost))
+ return;
+ if ((lfp = fopen(tempfile, "w")) == NULL) {
+ fatal("cannot open %s\n", tempfile);
+ exit(1);
+ }
+ }
+ for (f = files; f != NULL; f = f->n_next) {
+ if (filev) {
+ for (cpp = filev; *cpp; cpp++)
+ if (strcmp(f->n_name, *cpp) == 0)
+ goto found;
+ if (!nflag)
+ (void) fclose(lfp);
+ continue;
+ }
+ found:
+ n = 0;
+ for (sc = cmds; sc != NULL; sc = sc->sc_next) {
+ if (sc->sc_type != INSTALL)
+ continue;
+ n++;
+ install(f->n_name, sc->sc_name,
+ sc->sc_name == NULL ? 0 : ddir, sc->sc_options);
+ opts = sc->sc_options;
+ }
+ if (n == 0)
+ install(f->n_name, NULL, 0, options);
+ }
+done:
+ if (!nflag) {
+ (void) signal(SIGPIPE, cleanup);
+ (void) fclose(lfp);
+ lfp = NULL;
+ }
+ for (sc = cmds; sc != NULL; sc = sc->sc_next)
+ if (sc->sc_type == NOTIFY)
+ notify(tempfile, rhost, sc->sc_args, 0);
+ if (!nflag) {
+ (void) unlink(tempfile);
+ for (; ihead != NULL; ihead = ihead->nextp) {
+ free(ihead);
+ if ((opts & IGNLNKS) || ihead->count == 0)
+ continue;
+ log(lfp, "%s: Warning: missing links\n",
+ ihead->pathname);
+ }
+ }
+}
+
+/*
+ * Create a connection to the rdist server on the machine rhost.
+ */
+makeconn(rhost)
+ char *rhost;
+{
+ register char *ruser, *cp;
+ static char *cur_host = NULL;
+ static int port = -1;
+ char tuser[20];
+ int n;
+ extern char user[];
+ extern int userid;
+
+ if (debug)
+ printf("makeconn(%s)\n", rhost);
+
+ if (cur_host != NULL && rem >= 0) {
+ if (strcmp(cur_host, rhost) == 0)
+ return(1);
+ closeconn();
+ }
+ cur_host = rhost;
+ cp = index(rhost, '@');
+ if (cp != NULL) {
+ char c = *cp;
+
+ *cp = '\0';
+ strncpy(tuser, rhost, sizeof(tuser)-1);
+ *cp = c;
+ rhost = cp + 1;
+ ruser = tuser;
+ if (*ruser == '\0')
+ ruser = user;
+ else if (!okname(ruser))
+ return(0);
+ } else
+ ruser = user;
+ if (!qflag)
+ printf("updating host %s\n", rhost);
+ (void) sprintf(buf, "%s -Server%s", _PATH_RDIST, qflag ? " -q" : "");
+ if (port < 0) {
+ struct servent *sp;
+
+ if ((sp = getservbyname("shell", "tcp")) == NULL)
+ fatal("shell/tcp: unknown service");
+ port = sp->s_port;
+ }
+
+ if (debug) {
+ printf("port = %d, luser = %s, ruser = %s\n", ntohs(port), user, ruser);
+ printf("buf = %s\n", buf);
+ }
+
+ fflush(stdout);
+ setreuid(userid, 0);
+ rem = rcmd(&rhost, port, user, ruser, buf, 0);
+ setreuid(0, userid);
+ if (rem < 0)
+ return(0);
+ cp = buf;
+ if (read(rem, cp, 1) != 1)
+ lostconn();
+ if (*cp == 'V') {
+ do {
+ if (read(rem, cp, 1) != 1)
+ lostconn();
+ } while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
+ *--cp = '\0';
+ cp = buf;
+ n = 0;
+ while (*cp >= '0' && *cp <= '9')
+ n = (n * 10) + (*cp++ - '0');
+ if (*cp == '\0' && n == VERSION)
+ return(1);
+ error("connection failed: version numbers don't match (local %d, remote %d)\n", VERSION, n);
+ } else
+ error("connection failed: version numbers don't match\n");
+ closeconn();
+ return(0);
+}
+
+/*
+ * Signal end of previous connection.
+ */
+closeconn()
+{
+ if (debug)
+ printf("closeconn()\n");
+
+ if (rem >= 0) {
+ (void) write(rem, "\2\n", 2);
+ (void) close(rem);
+ rem = -1;
+ }
+}
+
+void
+lostconn()
+{
+ if (iamremote)
+ cleanup();
+ log(lfp, "rdist: lost connection\n");
+ longjmp(env, 1);
+}
+
+okname(name)
+ register char *name;
+{
+ register char *cp = name;
+ register int c;
+
+ do {
+ c = *cp;
+ if (c & 0200)
+ goto bad;
+ if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-')
+ goto bad;
+ cp++;
+ } while (*cp);
+ return(1);
+bad:
+ error("invalid user name %s\n", name);
+ return(0);
+}
+
+time_t lastmod;
+FILE *tfp;
+extern char target[], *tp;
+
+/*
+ * Process commands for comparing files to time stamp files.
+ */
+dodcolon(filev, files, stamp, cmds)
+ char **filev;
+ struct namelist *files;
+ char *stamp;
+ struct subcmd *cmds;
+{
+ register struct subcmd *sc;
+ register struct namelist *f;
+ register char **cpp;
+ struct timeval tv[2];
+ struct timezone tz;
+ struct stat stb;
+
+ if (debug)
+ printf("dodcolon()\n");
+
+ if (files == NULL) {
+ error("no files to be updated\n");
+ return;
+ }
+ if (stat(stamp, &stb) < 0) {
+ error("%s: %s\n", stamp, strerror(errno));
+ return;
+ }
+ if (debug)
+ printf("%s: %d\n", stamp, stb.st_mtime);
+
+ subcmds = cmds;
+ lastmod = stb.st_mtime;
+ if (nflag || (options & VERIFY))
+ tfp = NULL;
+ else {
+ if ((tfp = fopen(tempfile, "w")) == NULL) {
+ error("%s: %s\n", stamp, strerror(errno));
+ return;
+ }
+ (void) gettimeofday(&tv[0], &tz);
+ tv[1] = tv[0];
+ (void) utimes(stamp, tv);
+ }
+
+ for (f = files; f != NULL; f = f->n_next) {
+ if (filev) {
+ for (cpp = filev; *cpp; cpp++)
+ if (strcmp(f->n_name, *cpp) == 0)
+ goto found;
+ continue;
+ }
+ found:
+ tp = NULL;
+ cmptime(f->n_name);
+ }
+
+ if (tfp != NULL)
+ (void) fclose(tfp);
+ for (sc = cmds; sc != NULL; sc = sc->sc_next)
+ if (sc->sc_type == NOTIFY)
+ notify(tempfile, NULL, sc->sc_args, lastmod);
+ if (!nflag && !(options & VERIFY))
+ (void) unlink(tempfile);
+}
+
+/*
+ * Compare the mtime of file to the list of time stamps.
+ */
+cmptime(name)
+ char *name;
+{
+ struct stat stb;
+
+ if (debug)
+ printf("cmptime(%s)\n", name);
+
+ if (except(name))
+ return;
+
+ if (nflag) {
+ printf("comparing dates: %s\n", name);
+ return;
+ }
+
+ /*
+ * first time cmptime() is called?
+ */
+ if (tp == NULL) {
+ if (exptilde(target, name) == NULL)
+ return;
+ tp = name = target;
+ while (*tp)
+ tp++;
+ }
+ if (access(name, 4) < 0 || stat(name, &stb) < 0) {
+ error("%s: %s\n", name, strerror(errno));
+ return;
+ }
+
+ switch (stb.st_mode & S_IFMT) {
+ case S_IFREG:
+ break;
+
+ case S_IFDIR:
+ rcmptime(&stb);
+ return;
+
+ default:
+ error("%s: not a plain file\n", name);
+ return;
+ }
+
+ if (stb.st_mtime > lastmod)
+ log(tfp, "new: %s\n", name);
+}
+
+rcmptime(st)
+ struct stat *st;
+{
+ register DIR *d;
+ register struct direct *dp;
+ register char *cp;
+ char *otp;
+ int len;
+
+ if (debug)
+ printf("rcmptime(%x)\n", st);
+
+ if ((d = opendir(target)) == NULL) {
+ error("%s: %s\n", target, strerror(errno));
+ return;
+ }
+ otp = tp;
+ len = tp - target;
+ while (dp = readdir(d)) {
+ if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
+ continue;
+ if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) {
+ error("%s/%s: Name too long\n", target, dp->d_name);
+ continue;
+ }
+ tp = otp;
+ *tp++ = '/';
+ cp = dp->d_name;
+ while (*tp++ = *cp++)
+ ;
+ tp--;
+ cmptime(target);
+ }
+ closedir(d);
+ tp = otp;
+ *tp = '\0';
+}
+
+/*
+ * Notify the list of people the changes that were made.
+ * rhost == NULL if we are mailing a list of changes compared to at time
+ * stamp file.
+ */
+notify(file, rhost, to, lmod)
+ char *file, *rhost;
+ register struct namelist *to;
+ time_t lmod;
+{
+ register int fd, len;
+ FILE *pf, *popen();
+ struct stat stb;
+
+ if ((options & VERIFY) || to == NULL)
+ return;
+ if (!qflag) {
+ printf("notify ");
+ if (rhost)
+ printf("@%s ", rhost);
+ prnames(to);
+ }
+ if (nflag)
+ return;
+
+ if ((fd = open(file, 0)) < 0) {
+ error("%s: %s\n", file, strerror(errno));
+ return;
+ }
+ if (fstat(fd, &stb) < 0) {
+ error("%s: %s\n", file, strerror(errno));
+ (void) close(fd);
+ return;
+ }
+ if (stb.st_size == 0) {
+ (void) close(fd);
+ return;
+ }
+ /*
+ * Create a pipe to mailling program.
+ */
+ (void)sprintf(buf, "%s -oi -t", _PATH_SENDMAIL);
+ pf = popen(buf, "w");
+ if (pf == NULL) {
+ error("notify: \"%s\" failed\n", _PATH_SENDMAIL);
+ (void) close(fd);
+ return;
+ }
+ /*
+ * Output the proper header information.
+ */
+ fprintf(pf, "From: rdist (Remote distribution program)\n");
+ fprintf(pf, "To:");
+ if (!any('@', to->n_name) && rhost != NULL)
+ fprintf(pf, " %s@%s", to->n_name, rhost);
+ else
+ fprintf(pf, " %s", to->n_name);
+ to = to->n_next;
+ while (to != NULL) {
+ if (!any('@', to->n_name) && rhost != NULL)
+ fprintf(pf, ", %s@%s", to->n_name, rhost);
+ else
+ fprintf(pf, ", %s", to->n_name);
+ to = to->n_next;
+ }
+ putc('\n', pf);
+ if (rhost != NULL)
+ fprintf(pf, "Subject: files updated by rdist from %s to %s\n",
+ host, rhost);
+ else
+ fprintf(pf, "Subject: files updated after %s\n", ctime(&lmod));
+ putc('\n', pf);
+
+ while ((len = read(fd, buf, BUFSIZ)) > 0)
+ (void) fwrite(buf, 1, len, pf);
+ (void) close(fd);
+ (void) pclose(pf);
+}
+
+/*
+ * Return true if name is in the list.
+ */
+inlist(list, file)
+ struct namelist *list;
+ char *file;
+{
+ register struct namelist *nl;
+
+ for (nl = list; nl != NULL; nl = nl->n_next)
+ if (!strcmp(file, nl->n_name))
+ return(1);
+ return(0);
+}
+
+/*
+ * Return TRUE if file is in the exception list.
+ */
+except(file)
+ char *file;
+{
+ register struct subcmd *sc;
+ register struct namelist *nl;
+
+ if (debug)
+ printf("except(%s)\n", file);
+
+ for (sc = subcmds; sc != NULL; sc = sc->sc_next) {
+ if (sc->sc_type != EXCEPT && sc->sc_type != PATTERN)
+ continue;
+ for (nl = sc->sc_args; nl != NULL; nl = nl->n_next) {
+ if (sc->sc_type == EXCEPT) {
+ if (!strcmp(file, nl->n_name))
+ return(1);
+ continue;
+ }
+ if (regexec(file, regcomp(nl->n_name)) > 0)
+ return(1);
+ }
+ }
+ return(0);
+}
+
+char *
+colon(cp)
+ register char *cp;
+{
+
+ while (*cp) {
+ if (*cp == ':')
+ return(cp);
+ if (*cp == '/')
+ return(0);
+ cp++;
+ }
+ return(0);
+}
projects / unix-history / commitdiff