[unix-history] / usr / src / usr.bin / rdist / docmd.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)docmd.c	5.4 (Berkeley) %G%";
#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;

int	cleanup();
int	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(tmpfile, "w")) == NULL) {
			fatal("cannot open %s\n", tmpfile);
			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(tmpfile, rhost, sc->sc_args, 0);
	if (!nflag) {
		(void) unlink(tmpfile);
		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;
	}
}

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, sys_errlist[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(tmpfile, "w")) == NULL) {
			error("%s: %s\n", stamp, sys_errlist[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(tmpfile, NULL, sc->sc_args, lastmod);
	if (!nflag && !(options & VERIFY))
		(void) unlink(tmpfile);
}

/*
 * 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, sys_errlist[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, sys_errlist[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, sys_errlist[errno]);
		return;
	}
	if (fstat(fd, &stb) < 0) {
		error("%s: %s\n", file, sys_errlist[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;
			}
			re_comp(nl->n_name);
			if (re_exec(file) > 0)
				return(1);
		}
	}
	return(0);
}

char *
colon(cp)
	register char *cp;
{

	while (*cp) {
		if (*cp == ':')
			return(cp);
		if (*cp == '/')
			return(0);
		cp++;
	}
	return(0);
}
Commit	Line	Data
7172eb74 DF	1	/*
7172eb74 DF	2	* Copyright (c) 1983 Regents of the University of California.
0718fb71 KB	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
b36fc510 KB	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
7172eb74 DF	16	*/
7172eb74 DF	17
b6b5501c	18	#ifndef lint
567e65c3	19	static char sccsid[] = "@(#)docmd.c 5.4 (Berkeley) %G%";
0718fb71	20	#endif /* not lint */
b6b5501c RC	21
b6b5501c RC	22	#include "defs.h"
0fccdfef	23	#include <setjmp.h>
bbdda833	24	#include <netdb.h>
b6b5501c	25
0fccdfef	26	FILE lfp; / log file for recording files updated */
4085f36f	27	struct subcmd subcmds; / list of sub-commands for current cmd */
0fccdfef RC	28	jmp_buf env;
	29
	30	int cleanup();
	31	int lostconn();
	32
	33	/*
	34	* Do the commands in cmds (initialized by yyparse).
	35	*/
78a18ca3 RC	36	docmds(dhosts, argc, argv)
78a18ca3 RC	37	char **dhosts;
0fccdfef RC	38	int argc;
	39	char **argv;
	40	{
	41	register struct cmd *c;
86d7a5c5 RC	42	register struct namelist *f;
86d7a5c5 RC	43	register char **cpp;
0fccdfef RC	44	extern struct cmd *cmds;
	45
	46	signal(SIGHUP, cleanup);
	47	signal(SIGINT, cleanup);
	48	signal(SIGQUIT, cleanup);
	49	signal(SIGTERM, cleanup);
	50
	51	for (c = cmds; c != NULL; c = c->c_next) {
e4b2c01a	52	if (dhosts != NULL && *dhosts != NULL) {
78a18ca3 RC	53	for (cpp = dhosts; *cpp; cpp++)
	54	if (strcmp(c->c_name, *cpp) == 0)
	55	goto fndhost;
	56	continue;
	57	}
	58	fndhost:
86d7a5c5 RC	59	if (argc) {
	60	for (cpp = argv; *cpp; cpp++) {
	61	if (c->c_label != NULL &&
4085f36f	62	strcmp(c->c_label, *cpp) == 0) {
86d7a5c5 RC	63	cpp = NULL;
	64	goto found;
	65	}
	66	for (f = c->c_files; f != NULL; f = f->n_next)
	67	if (strcmp(f->n_name, *cpp) == 0)
	68	goto found;
	69	}
	70	continue;
	71	} else
	72	cpp = NULL;
	73	found:
0fccdfef RC	74	switch (c->c_type) {
0fccdfef RC	75	case ARROW:
86d7a5c5	76	doarrow(cpp, c->c_files, c->c_name, c->c_cmds);
0fccdfef RC	77	break;
0fccdfef RC	78	case DCOLON:
86d7a5c5	79	dodcolon(cpp, c->c_files, c->c_name, c->c_cmds);
0fccdfef RC	80	break;
	81	default:
	82	fatal("illegal command type %d\n", c->c_type);
	83	}
	84	}
	85	closeconn();
	86	}
b6b5501c RC	87
b6b5501c RC	88	/*
82572cb6	89	* Process commands for sending files to other machines.
b6b5501c	90	*/
86d7a5c5 RC	91	doarrow(filev, files, rhost, cmds)
86d7a5c5 RC	92	char **filev;
0fccdfef	93	struct namelist *files;
9d560577	94	char *rhost;
0fccdfef	95	struct subcmd *cmds;
b6b5501c	96	{
0fccdfef RC	97	register struct namelist *f;
0fccdfef RC	98	register struct subcmd *sc;
86d7a5c5	99	register char **cpp;
a3e6fd64	100	int n, ddir, opts = options;
b6b5501c RC	101
b6b5501c RC	102	if (debug)
9d560577	103	printf("doarrow(%x, %s, %x)\n", files, rhost, cmds);
b6b5501c	104
024fde5b RC	105	if (files == NULL) {
	106	error("no files to be updated\n");
	107	return;
	108	}
e8109cf8	109
4085f36f	110	subcmds = cmds;
0fccdfef	111	ddir = files->n_next != NULL; /* destination is a directory */
d0bd9bfc RC	112	if (nflag)
	113	printf("updating host %s\n", rhost);
	114	else {
346dad94	115	if (setjmp(env))
0fccdfef RC	116	goto done;
0fccdfef RC	117	signal(SIGPIPE, lostconn);
9d560577	118	if (!makeconn(rhost))
0fccdfef RC	119	return;
	120	if ((lfp = fopen(tmpfile, "w")) == NULL) {
	121	fatal("cannot open %s\n", tmpfile);
	122	exit(1);
b6b5501c	123	}
0fccdfef RC	124	}
0fccdfef RC	125	for (f = files; f != NULL; f = f->n_next) {
86d7a5c5	126	if (filev) {
0fccdfef	127	for (cpp = filev; *cpp; cpp++)
86d7a5c5	128	if (strcmp(f->n_name, *cpp) == 0)
0fccdfef RC	129	goto found;
	130	if (!nflag)
	131	(void) fclose(lfp);
	132	continue;
b6b5501c	133	}
0fccdfef	134	found:
0fccdfef RC	135	n = 0;
	136	for (sc = cmds; sc != NULL; sc = sc->sc_next) {
	137	if (sc->sc_type != INSTALL)
	138	continue;
	139	n++;
	140	install(f->n_name, sc->sc_name,
	141	sc->sc_name == NULL ? 0 : ddir, sc->sc_options);
a3e6fd64	142	opts = sc->sc_options;
b6b5501c	143	}
0fccdfef RC	144	if (n == 0)
0fccdfef RC	145	install(f->n_name, NULL, 0, options);
b6b5501c	146	}
0fccdfef RC	147	done:
0fccdfef RC	148	if (!nflag) {
346dad94	149	(void) signal(SIGPIPE, cleanup);
0fccdfef RC	150	(void) fclose(lfp);
	151	lfp = NULL;
	152	}
	153	for (sc = cmds; sc != NULL; sc = sc->sc_next)
	154	if (sc->sc_type == NOTIFY)
9d560577	155	notify(tmpfile, rhost, sc->sc_args, 0);
a3e6fd64	156	if (!nflag) {
b6b5501c	157	(void) unlink(tmpfile);
a3e6fd64 RC	158	for (; ihead != NULL; ihead = ihead->nextp) {
	159	free(ihead);
	160	if ((opts & IGNLNKS) \|\| ihead->count == 0)
	161	continue;
	162	log(lfp, "%s: Warning: missing links\n",
	163	ihead->pathname);
	164	}
	165	}
b6b5501c RC	166	}
	167
	168	/*
	169	* Create a connection to the rdist server on the machine rhost.
	170	*/
	171	makeconn(rhost)
	172	char *rhost;
	173	{
6e6d779a	174	register char ruser, cp;
0fccdfef	175	static char *cur_host = NULL;
bbdda833 RC	176	static int port = -1;
bbdda833 RC	177	char tuser[20];
6e6d779a	178	int n;
b6b5501c	179	extern char user[];
80babee1	180	extern int userid;
b6b5501c	181
0fccdfef RC	182	if (debug)
	183	printf("makeconn(%s)\n", rhost);
	184
346dad94 RC	185	if (cur_host != NULL && rem >= 0) {
	186	if (strcmp(cur_host, rhost) == 0)
	187	return(1);
	188	closeconn();
346dad94	189	}
bbdda833 RC	190	cur_host = rhost;
	191	cp = index(rhost, '@');
	192	if (cp != NULL) {
	193	char c = *cp;
	194
	195	*cp = '\0';
	196	strncpy(tuser, rhost, sizeof(tuser)-1);
	197	*cp = c;
	198	rhost = cp + 1;
	199	ruser = tuser;
	200	if (*ruser == '\0')
	201	ruser = user;
	202	else if (!okname(ruser))
b6b5501c RC	203	return(0);
	204	} else
	205	ruser = user;
0fccdfef RC	206	if (!qflag)
0fccdfef RC	207	printf("updating host %s\n", rhost);
567e65c3	208	(void) sprintf(buf, "%s -Server%s", _PATH_RDIST, qflag ? " -q" : "");
bbdda833 RC	209	if (port < 0) {
	210	struct servent *sp;
	211
	212	if ((sp = getservbyname("shell", "tcp")) == NULL)
	213	fatal("shell/tcp: unknown service");
	214	port = sp->s_port;
	215	}
b6b5501c RC	216
b6b5501c RC	217	if (debug) {
bbdda833	218	printf("port = %d, luser = %s, ruser = %s\n", ntohs(port), user, ruser);
b6b5501c RC	219	printf("buf = %s\n", buf);
	220	}
	221
82572cb6	222	fflush(stdout);
80babee1	223	setreuid(userid, 0);
bbdda833	224	rem = rcmd(&rhost, port, user, ruser, buf, 0);
80babee1	225	setreuid(0, userid);
b6b5501c RC	226	if (rem < 0)
b6b5501c RC	227	return(0);
6e6d779a RC	228	cp = buf;
	229	if (read(rem, cp, 1) != 1)
	230	lostconn();
	231	if (*cp == 'V') {
	232	do {
	233	if (read(rem, cp, 1) != 1)
	234	lostconn();
	235	} while (*cp++ != '\n' && cp < &buf[BUFSIZ]);
	236	*--cp = '\0';
	237	cp = buf;
	238	n = 0;
	239	while (cp >= '0' && cp <= '9')
	240	n = (n * 10) + (*cp++ - '0');
0392d90c	241	if (*cp == '\0' && n == VERSION)
6e6d779a	242	return(1);
a3e6fd64 RC	243	error("connection failed: version numbers don't match (local %d, remote %d)\n", VERSION, n);
	244	} else
	245	error("connection failed: version numbers don't match\n");
0392d90c	246	closeconn();
6e6d779a	247	return(0);
b6b5501c RC	248	}
b6b5501c RC	249
0fccdfef RC	250	/*
	251	* Signal end of previous connection.
	252	*/
	253	closeconn()
	254	{
9d560577 RC	255	if (debug)
	256	printf("closeconn()\n");
	257
0fccdfef RC	258	if (rem >= 0) {
	259	(void) write(rem, "\2\n", 2);
	260	(void) close(rem);
	261	rem = -1;
	262	}
	263	}
	264
	265	lostconn()
	266	{
346dad94 RC	267	if (iamremote)
	268	cleanup();
	269	log(lfp, "rdist: lost connection\n");
0fccdfef RC	270	longjmp(env, 1);
	271	}
	272
e8109cf8 RC	273	okname(name)
e8109cf8 RC	274	register char *name;
b6b5501c	275	{
e8109cf8 RC	276	register char *cp = name;
e8109cf8 RC	277	register int c;
b6b5501c	278
e8109cf8 RC	279	do {
	280	c = *cp;
	281	if (c & 0200)
	282	goto bad;
	283	if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-')
	284	goto bad;
	285	cp++;
	286	} while (*cp);
	287	return(1);
	288	bad:
	289	error("invalid user name %s\n", name);
	290	return(0);
82572cb6 RC	291	}
82572cb6 RC	292
d6bccb44 RC	293	time_t lastmod;
	294	FILE *tfp;
	295	extern char target[], *tp;
3024eb6f	296
82572cb6 RC	297	/*
	298	* Process commands for comparing files to time stamp files.
	299	*/
86d7a5c5 RC	300	dodcolon(filev, files, stamp, cmds)
86d7a5c5 RC	301	char **filev;
0fccdfef RC	302	struct namelist *files;
	303	char *stamp;
	304	struct subcmd *cmds;
82572cb6	305	{
0fccdfef RC	306	register struct subcmd *sc;
0fccdfef RC	307	register struct namelist *f;
82572cb6	308	register char **cpp;
f7770429 RC	309	struct timeval tv[2];
f7770429 RC	310	struct timezone tz;
82572cb6	311	struct stat stb;
82572cb6 RC	312
82572cb6 RC	313	if (debug)
0fccdfef	314	printf("dodcolon()\n");
82572cb6	315
d6bccb44	316	if (files == NULL) {
024fde5b RC	317	error("no files to be updated\n");
	318	return;
	319	}
0fccdfef RC	320	if (stat(stamp, &stb) < 0) {
0fccdfef RC	321	error("%s: %s\n", stamp, sys_errlist[errno]);
d6bccb44 RC	322	return;
	323	}
	324	if (debug)
0fccdfef	325	printf("%s: %d\n", stamp, stb.st_mtime);
3db8aa13	326
4085f36f	327	subcmds = cmds;
3db8aa13 RC	328	lastmod = stb.st_mtime;
	329	if (nflag \|\| (options & VERIFY))
	330	tfp = NULL;
	331	else {
	332	if ((tfp = fopen(tmpfile, "w")) == NULL) {
0fccdfef	333	error("%s: %s\n", stamp, sys_errlist[errno]);
d6bccb44 RC	334	return;
d6bccb44 RC	335	}
3db8aa13 RC	336	(void) gettimeofday(&tv[0], &tz);
	337	tv[1] = tv[0];
	338	(void) utimes(stamp, tv);
	339	}
f7770429	340
0fccdfef	341	for (f = files; f != NULL; f = f->n_next) {
86d7a5c5	342	if (filev) {
82572cb6	343	for (cpp = filev; *cpp; cpp++)
86d7a5c5	344	if (strcmp(f->n_name, *cpp) == 0)
82572cb6 RC	345	goto found;
	346	continue;
	347	}
	348	found:
	349	tp = NULL;
0fccdfef	350	cmptime(f->n_name);
82572cb6	351	}
f7770429	352
d6bccb44 RC	353	if (tfp != NULL)
d6bccb44 RC	354	(void) fclose(tfp);
0fccdfef RC	355	for (sc = cmds; sc != NULL; sc = sc->sc_next)
	356	if (sc->sc_type == NOTIFY)
	357	notify(tmpfile, NULL, sc->sc_args, lastmod);
d6bccb44 RC	358	if (!nflag && !(options & VERIFY))
d6bccb44 RC	359	(void) unlink(tmpfile);
82572cb6 RC	360	}
	361
	362	/*
	363	* Compare the mtime of file to the list of time stamps.
	364	*/
	365	cmptime(name)
	366	char *name;
	367	{
82572cb6 RC	368	struct stat stb;
	369
	370	if (debug)
	371	printf("cmptime(%s)\n", name);
	372
4085f36f	373	if (except(name))
82572cb6 RC	374	return;
82572cb6 RC	375
d6bccb44 RC	376	if (nflag) {
	377	printf("comparing dates: %s\n", name);
	378	return;
	379	}
	380
82572cb6 RC	381	/*
	382	* first time cmptime() is called?
	383	*/
	384	if (tp == NULL) {
e8109cf8 RC	385	if (exptilde(target, name) == NULL)
e8109cf8 RC	386	return;
82572cb6 RC	387	tp = name = target;
	388	while (*tp)
	389	tp++;
	390	}
	391	if (access(name, 4) < 0 \|\| stat(name, &stb) < 0) {
	392	error("%s: %s\n", name, sys_errlist[errno]);
	393	return;
	394	}
	395
	396	switch (stb.st_mode & S_IFMT) {
	397	case S_IFREG:
	398	break;
	399
	400	case S_IFDIR:
	401	rcmptime(&stb);
	402	return;
	403
	404	default:
	405	error("%s: not a plain file\n", name);
	406	return;
	407	}
	408
d6bccb44 RC	409	if (stb.st_mtime > lastmod)
d6bccb44 RC	410	log(tfp, "new: %s\n", name);
82572cb6 RC	411	}
	412
	413	rcmptime(st)
	414	struct stat *st;
	415	{
	416	register DIR *d;
	417	register struct direct *dp;
	418	register char *cp;
	419	char *otp;
	420	int len;
	421
	422	if (debug)
	423	printf("rcmptime(%x)\n", st);
	424
	425	if ((d = opendir(target)) == NULL) {
	426	error("%s: %s\n", target, sys_errlist[errno]);
	427	return;
	428	}
	429	otp = tp;
	430	len = tp - target;
	431	while (dp = readdir(d)) {
	432	if (!strcmp(dp->d_name, ".") \|\| !strcmp(dp->d_name, ".."))
	433	continue;
	434	if (len + 1 + strlen(dp->d_name) >= BUFSIZ - 1) {
	435	error("%s/%s: Name too long\n", target, dp->d_name);
	436	continue;
	437	}
	438	tp = otp;
	439	*tp++ = '/';
	440	cp = dp->d_name;
	441	while (tp++ = cp++)
	442	;
	443	tp--;
	444	cmptime(target);
	445	}
	446	closedir(d);
	447	tp = otp;
	448	*tp = '\0';
b6b5501c RC	449	}
	450
	451	/*
	452	* Notify the list of people the changes that were made.
f7770429 RC	453	* rhost == NULL if we are mailing a list of changes compared to at time
f7770429 RC	454	* stamp file.
b6b5501c	455	*/
f7770429	456	notify(file, rhost, to, lmod)
3024eb6f	457	char file, rhost;
0fccdfef	458	register struct namelist *to;
f7770429	459	time_t lmod;
b6b5501c RC	460	{
	461	register int fd, len;
	462	FILE pf, popen();
	463	struct stat stb;
	464
d6bccb44	465	if ((options & VERIFY) \|\| to == NULL)
b6b5501c RC	466	return;
b6b5501c RC	467	if (!qflag) {
82572cb6	468	printf("notify ");
3024eb6f RC	469	if (rhost)
3024eb6f RC	470	printf("@%s ", rhost);
b6b5501c RC	471	prnames(to);
	472	}
	473	if (nflag)
	474	return;
	475
82572cb6 RC	476	if ((fd = open(file, 0)) < 0) {
	477	error("%s: %s\n", file, sys_errlist[errno]);
	478	return;
	479	}
	480	if (fstat(fd, &stb) < 0) {
	481	error("%s: %s\n", file, sys_errlist[errno]);
	482	(void) close(fd);
	483	return;
	484	}
	485	if (stb.st_size == 0) {
	486	(void) close(fd);
b6b5501c RC	487	return;
	488	}
	489	/*
	490	* Create a pipe to mailling program.
	491	*/
567e65c3 KB	492	(void)sprintf(buf, "%s -oi -t", _PATH_SENDMAIL);
567e65c3 KB	493	pf = popen(buf, "w");
3024eb6f	494	if (pf == NULL) {
567e65c3	495	error("notify: \"%s\" failed\n", _PATH_SENDMAIL);
3024eb6f RC	496	(void) close(fd);
	497	return;
	498	}
b6b5501c RC	499	/*
	500	* Output the proper header information.
	501	*/
	502	fprintf(pf, "From: rdist (Remote distribution program)\n");
	503	fprintf(pf, "To:");
0fccdfef RC	504	if (!any('@', to->n_name) && rhost != NULL)
0fccdfef RC	505	fprintf(pf, " %s@%s", to->n_name, rhost);
f7770429	506	else
0fccdfef RC	507	fprintf(pf, " %s", to->n_name);
0fccdfef RC	508	to = to->n_next;
b6b5501c	509	while (to != NULL) {
0fccdfef RC	510	if (!any('@', to->n_name) && rhost != NULL)
0fccdfef RC	511	fprintf(pf, ", %s@%s", to->n_name, rhost);
82572cb6	512	else
0fccdfef RC	513	fprintf(pf, ", %s", to->n_name);
0fccdfef RC	514	to = to->n_next;
b6b5501c RC	515	}
b6b5501c RC	516	putc('\n', pf);
f7770429 RC	517	if (rhost != NULL)
	518	fprintf(pf, "Subject: files updated by rdist from %s to %s\n",
	519	host, rhost);
	520	else
	521	fprintf(pf, "Subject: files updated after %s\n", ctime(&lmod));
b6b5501c RC	522	putc('\n', pf);
	523
	524	while ((len = read(fd, buf, BUFSIZ)) > 0)
	525	(void) fwrite(buf, 1, len, pf);
	526	(void) close(fd);
	527	(void) pclose(pf);
	528	}
	529
b6b5501c	530	/*
d6bccb44	531	* Return true if name is in the list.
b6b5501c	532	*/
d6bccb44	533	inlist(list, file)
0fccdfef	534	struct namelist *list;
b6b5501c RC	535	char *file;
b6b5501c RC	536	{
0fccdfef	537	register struct namelist *nl;
b6b5501c	538
0fccdfef RC	539	for (nl = list; nl != NULL; nl = nl->n_next)
0fccdfef RC	540	if (!strcmp(file, nl->n_name))
e8109cf8	541	return(1);
b6b5501c RC	542	return(0);
	543	}
	544
e8109cf8	545	/*
4085f36f	546	* Return TRUE if file is in the exception list.
e8109cf8	547	*/
4085f36f RC	548	except(file)
4085f36f RC	549	char *file;
b6b5501c	550	{
4085f36f RC	551	register struct subcmd *sc;
4085f36f RC	552	register struct namelist *nl;
b6b5501c	553
e8109cf8	554	if (debug)
4085f36f	555	printf("except(%s)\n", file);
e8109cf8	556
4085f36f RC	557	for (sc = subcmds; sc != NULL; sc = sc->sc_next) {
4085f36f RC	558	if (sc->sc_type != EXCEPT && sc->sc_type != PATTERN)
e8109cf8	559	continue;
0fccdfef	560	for (nl = sc->sc_args; nl != NULL; nl = nl->n_next) {
4085f36f RC	561	if (sc->sc_type == EXCEPT) {
	562	if (!strcmp(file, nl->n_name))
	563	return(1);
	564	continue;
0fccdfef	565	}
4085f36f RC	566	re_comp(nl->n_name);
	567	if (re_exec(file) > 0)
	568	return(1);
e8109cf8 RC	569	}
e8109cf8 RC	570	}
4085f36f	571	return(0);
b6b5501c RC	572	}
	573
	574	char *
	575	colon(cp)
	576	register char *cp;
	577	{
	578
	579	while (*cp) {
	580	if (*cp == ':')
	581	return(cp);
	582	if (*cp == '/')
	583	return(0);
	584	cp++;
	585	}
	586	return(0);
	587	}