Return to rcsprog.c CVS log

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fork our code we shared between openrcs/cvs into the openrcs dir.

this was starting to become inhuman to maintain without
ugly ugly hacks in the shared code, and it will be easier
to make specific changes for openrcs without touching the
soon-to-be-replaced opencvs code.

/*	$OpenBSD: rcsprog.c,v 1.117 2006/04/26 02:55:13 joris Exp $	*/
/*
 * Copyright (c) 2005 Jean-Francois Brousseau <jfb@openbsd.org>
 * 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. The name of the author 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 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 AUTHOR 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.
 */

#include "includes.h"

#include "rcsprog.h"

#define RCS_CMD_MAXARG	128
#define RCSPROG_OPTSTRING	"A:a:b::c:e::ik:Ll::m:Mn:N:o:qt::TUu::Vx::z::"

const char rcs_version[] = "OpenCVS RCS version 3.6";

int	 rcsflags;
int	 rcs_optind;
char	*rcs_optarg;
char	*rcs_suffixes;
char	*rcs_tmpdir = RCS_TMPDIR_DEFAULT;

struct rcs_prog {
	char	*prog_name;
	int	(*prog_hdlr)(int, char **);
	void	(*prog_usage)(void);
} programs[] = {
	{ "rcs",	rcs_main,	rcs_usage	},
	{ "ci",		checkin_main,	checkin_usage   },
	{ "co",		checkout_main,	checkout_usage  },
	{ "rcsclean",	rcsclean_main,	rcsclean_usage	},
	{ "rcsdiff",	rcsdiff_main,	rcsdiff_usage	},
	{ "rcsmerge",	rcsmerge_main,	rcsmerge_usage	},
	{ "rlog",	rlog_main,	rlog_usage	},
	{ "ident",	ident_main,	ident_usage	},
};

struct rcs_wklhead rcs_temp_files;

void sighdlr(int);
static void  rcs_attach_symbol(RCSFILE *, const char *);

/* ARGSUSED */
void
sighdlr(int sig)
{
	rcs_worklist_clean(&rcs_temp_files, rcs_worklist_unlink);
	_exit(1);
}

int
rcs_init(char *envstr, char **argv, int argvlen)
{
	u_int i;
	int argc, error;
	char linebuf[256],  *lp, *cp;

	strlcpy(linebuf, envstr, sizeof(linebuf));
	memset(argv, 0, argvlen * sizeof(char *));

	error = argc = 0;
	for (lp = linebuf; lp != NULL;) {
		cp = strsep(&lp, " \t\b\f\n\r\t\v");
		if (cp == NULL)
			break;
		else if (*cp == '\0')
			continue;

		if (argc == argvlen) {
			error++;
			break;
		}

		argv[argc] = xstrdup(cp);
		argc++;
	}

	if (error != 0) {
		for (i = 0; i < (u_int)argc; i++)
			xfree(argv[i]);
		argc = -1;
	}

	return (argc);
}

int
main(int argc, char **argv)
{
	u_int i;
	char *rcsinit, *cmd_argv[RCS_CMD_MAXARG];
	int ret, cmd_argc;

	ret = -1;
	rcs_optind = 1;
	SLIST_INIT(&rcs_temp_files);

	cmd_argc = 0;
	cmd_argv[cmd_argc++] = argv[0];
	if ((rcsinit = getenv("RCSINIT")) != NULL) {
		ret = rcs_init(rcsinit, cmd_argv + 1,
		    RCS_CMD_MAXARG - 1);
		if (ret < 0) {
			warnx("failed to prepend RCSINIT options");
			exit (1);
		}

		cmd_argc += ret;
	}

	if ((rcs_tmpdir = getenv("TMPDIR")) == NULL)
		rcs_tmpdir = RCS_TMPDIR_DEFAULT;

	for (ret = 1; ret < argc; ret++)
		cmd_argv[cmd_argc++] = argv[ret];

	signal(SIGHUP, sighdlr);
	signal(SIGINT, sighdlr);
	signal(SIGQUIT, sighdlr);
	signal(SIGABRT, sighdlr);
	signal(SIGALRM, sighdlr);
	signal(SIGTERM, sighdlr);

	for (i = 0; i < (sizeof(programs)/sizeof(programs[0])); i++)
		if (strcmp(__progname, programs[i].prog_name) == 0) {
			usage = programs[i].prog_usage;
			ret = programs[i].prog_hdlr(cmd_argc, cmd_argv);
			break;
		}

	/* clean up temporary files */
	rcs_worklist_run(&rcs_temp_files, rcs_worklist_unlink);

	exit(ret);
	/* NOTREACHED */
}


void
rcs_usage(void)
{
	fprintf(stderr,
	    "usage: rcs [-ehIiLMqTUV] [-Aoldfile] [-ausers] [-b[rev]]\n"
	    "           [-cstring] [-e[users]] [-kmode] [-l[rev]] [-mrev:msg]\n"
	    "           [-orange] [-sstate[:rev]] [-tfile|str] [-u[rev]]\n"
	    "           [-xsuffixes] file ...\n");
}

/*
 * rcs_main()
 *
 * Handler for the `rcs' program.
 * Returns 0 on success, or >0 on error.
 */
int
rcs_main(int argc, char **argv)
{
	int i, j, ch, flags, kflag, lkmode;
	char fpath[MAXPATHLEN], ofpath[MAXPATHLEN];
	char *logstr, *logmsg, *nflag, *descfile;
	char *alist, *comment, *elist, *lrev, *urev, *orange;
	mode_t fmode;
	RCSFILE *file, *oldfile;
	RCSNUM *logrev;
	struct rcs_access *acp;
	time_t rcs_mtime = -1;

	kflag = RCS_KWEXP_ERR;
	lkmode = -1;
	fmode =  S_IRUSR|S_IRGRP|S_IROTH;
	flags = RCS_RDWR|RCS_PARSE_FULLY;
	lrev = urev = descfile = nflag = NULL;
	logstr = alist = comment = elist = orange = NULL;

	/* match GNU */
	if (1 < argc && argv[1][0] != '-')
		warnx("warning: No options were given; "
		    "this usage is obsolescent.");

	while ((ch = rcs_getopt(argc, argv, RCSPROG_OPTSTRING)) != -1) {
		switch (ch) {
		case 'A':
			if (rcs_statfile(rcs_optarg, ofpath,
			    sizeof(ofpath), flags) < 0)
				exit(1);
			rcsflags |= CO_ACLAPPEND;
			break;
		case 'a':
			alist = rcs_optarg;
			break;
		case 'c':
			comment = rcs_optarg;
			break;
		case 'e':
			elist = rcs_optarg;
			rcsflags |= RCSPROG_EFLAG;
			break;
		case 'i':
			flags |= RCS_CREATE;
			break;
		case 'k':
			kflag = rcs_kflag_get(rcs_optarg);
			if (RCS_KWEXP_INVAL(kflag)) {
				warnx("invalid RCS keyword substitution mode");
				(usage)();
				exit(1);
			}
			break;
		case 'L':
			if (lkmode == RCS_LOCK_LOOSE)
				warnx("-U overriden by -L");
			lkmode = RCS_LOCK_STRICT;
			break;
		case 'l':
			/* XXX - Check with -u flag. */
			lrev = rcs_optarg;
			rcsflags |= RCSPROG_LFLAG;
			break;
		case 'm':
			logstr = xstrdup(rcs_optarg);
			break;
		case 'M':
			/* ignore for the moment */
			break;
		case 'n':
			nflag = xstrdup(rcs_optarg);
			break;
		case 'N':
			nflag = xstrdup(rcs_optarg);
			rcsflags |= RCSPROG_NFLAG;
			break;
		case 'o':
			orange = xstrdup(rcs_optarg);
			break;
		case 'q':
			rcsflags |= QUIET;
			break;
		case 't':
			descfile = rcs_optarg;
			rcsflags |= DESCRIPTION;
			break;
		case 'T':
			rcsflags |= PRESERVETIME;
			break;
		case 'U':
			if (lkmode == RCS_LOCK_STRICT)
				warnx("-L overriden by -U");
			lkmode = RCS_LOCK_LOOSE;
			break;
		case 'u':
			/* XXX - Check with -l flag. */
			urev = rcs_optarg;
			rcsflags |= RCSPROG_UFLAG;
			break;
		case 'V':
			printf("%s\n", rcs_version);
			exit(0);
			/* NOTREACHED */
		case 'x':
			/* Use blank extension if none given. */
			rcs_suffixes = rcs_optarg ? rcs_optarg : "";
			break;
		case 'z':
			/*
			 * kept for compatibility
			 */
			break;
		default:
			(usage)();
			exit(1);
		}
	}

	argc -= rcs_optind;
	argv += rcs_optind;

	if (argc == 0) {
		warnx("no input file");
		(usage)();
		exit(1);
	}

	for (i = 0; i < argc; i++) {
		if (rcs_statfile(argv[i], fpath, sizeof(fpath), flags) < 0)
			continue;

		if (!(rcsflags & QUIET))
			printf("RCS file: %s\n", fpath);

		if ((file = rcs_open(fpath, flags, fmode)) == NULL)
			continue;

		if (rcsflags & DESCRIPTION)
			rcs_set_description(file, descfile);
		else if (flags & RCS_CREATE)
			rcs_set_description(file, NULL);

		if (rcsflags & PRESERVETIME)
			rcs_mtime = rcs_get_mtime(file->rf_path);

		if (nflag != NULL)
			rcs_attach_symbol(file, nflag);

		if (logstr != NULL) {
			if ((logmsg = strchr(logstr, ':')) == NULL) {
				warnx("missing log message");
				rcs_close(file);
				continue;
			}

			*logmsg++ = '\0';
			if ((logrev = rcsnum_parse(logstr)) == NULL) {
				warnx("`%s' bad revision number", logstr);
				rcs_close(file);
				continue;
			}

			if (rcs_rev_setlog(file, logrev, logmsg) < 0) {
				warnx("failed to set logmsg for `%s' to `%s'",
				    logstr, logmsg);
				rcs_close(file);
				rcsnum_free(logrev);
				continue;
			}

			rcsnum_free(logrev);
		}

		/* entries to add from <oldfile> */
		if (rcsflags & CO_ACLAPPEND) {
			/* XXX */
			if ((oldfile = rcs_open(ofpath, RCS_READ)) == NULL)
				exit(1);

			TAILQ_FOREACH(acp, &(oldfile->rf_access), ra_list)
				rcs_access_add(file, acp->ra_name);

			rcs_close(oldfile);
		}

		/* entries to add to the access list */
		if (alist != NULL) {
			struct rcs_argvector *aargv;

			aargv = rcs_strsplit(alist, ",");
			for (j = 0; aargv->argv[j] != NULL; j++)
				rcs_access_add(file, aargv->argv[j]);

			rcs_argv_destroy(aargv);
		}

		if (comment != NULL)
			rcs_comment_set(file, comment);

		if (elist != NULL) {
			struct rcs_argvector *eargv;

			eargv = rcs_strsplit(elist, ",");
			for (j = 0; eargv->argv[j] != NULL; j++)
				rcs_access_remove(file, eargv->argv[j]);

			rcs_argv_destroy(eargv);
		} else if (rcsflags & RCSPROG_EFLAG) {
			struct rcs_access *rap;

			/* XXX rcs_access_remove(file, NULL); ?? */
			while (!TAILQ_EMPTY(&(file->rf_access))) {
				rap = TAILQ_FIRST(&(file->rf_access));
				TAILQ_REMOVE(&(file->rf_access), rap, ra_list);
				xfree(rap->ra_name);
				xfree(rap);
			}
			/* not synced anymore */
			file->rf_flags &= ~RCS_SYNCED;
		}

		rcs_kwexp_set(file, kflag);

		if (lkmode != -1)
			(void)rcs_lock_setmode(file, lkmode);

		if (rcsflags & RCSPROG_LFLAG) {
			RCSNUM *rev;
			const char *username;
			char rev_str[16];

			if ((username = getlogin()) == NULL)
				err(1, "getlogin");
			if (lrev == NULL) {
				rev = rcsnum_alloc();
				rcsnum_cpy(file->rf_head, rev, 0);
			} else if ((rev = rcsnum_parse(lrev)) == NULL) {
				warnx("unable to unlock file");
				rcs_close(file);
				continue;
			}
			rcsnum_tostr(rev, rev_str, sizeof(rev_str));
			/* Make sure revision exists. */
			if (rcs_findrev(file, rev) == NULL)
				errx(1, "%s: cannot lock nonexisting "
				    "revision %s", fpath, rev_str);
			if (rcs_lock_add(file, username, rev) != -1 &&
			    !(rcsflags & QUIET))
				printf("%s locked\n", rev_str);
			rcsnum_free(rev);
		}

		if (rcsflags & RCSPROG_UFLAG) {
			RCSNUM *rev;
			const char *username;
			char rev_str[16];

			if ((username = getlogin()) == NULL)
				err(1, "getlogin");
			if (urev == NULL) {
				rev = rcsnum_alloc();
				rcsnum_cpy(file->rf_head, rev, 0);
			} else if ((rev = rcsnum_parse(urev)) == NULL) {
				warnx("unable to unlock file");
				rcs_close(file);
				continue;
			}
			rcsnum_tostr(rev, rev_str, sizeof(rev_str));
			/* Make sure revision exists. */
			if (rcs_findrev(file, rev) == NULL)
				errx(1, "%s: cannot unlock nonexisting "
				    "revision %s", fpath, rev_str);
			if (rcs_lock_remove(file, username, rev) == -1 &&
			    !(rcsflags & QUIET))
				warnx("%s: warning: No locks are set.", fpath);
			rcsnum_free(rev);
		}

		if (orange != NULL) {
			struct rcs_delta *rdp;
			char b[16];

			rcs_rev_select(file, orange);
			TAILQ_FOREACH(rdp, &(file->rf_delta), rd_list) {
				/*
				 * Delete selected revisions.
				 */
				if (rdp->rd_flags & RCS_RD_SELECT) {
					rcsnum_tostr(rdp->rd_num, b, sizeof(b));
					printf("deleting revision %s\n", b);
					(void)rcs_rev_remove(file, rdp->rd_num);
				}
			}
		}

		rcs_close(file);

		if (rcsflags & PRESERVETIME)
			rcs_set_mtime(fpath, rcs_mtime);

		if (!(rcsflags & QUIET))
			printf("done\n");
	}

	if (logstr != NULL)
		xfree(logstr);

	if (nflag != NULL)
		xfree(nflag);

	if (orange != NULL)
		xfree(orange);

	return (0);
}

static void
rcs_attach_symbol(RCSFILE *file, const char *symname)
{
	char *rnum;
	RCSNUM *rev;
	char rbuf[16];
	int rm;

	rm = 0;
	rev = NULL;
	if ((rnum = strrchr(symname, ':')) != NULL) {
		if (rnum[1] == '\0')
			rev = file->rf_head;
		*(rnum++) = '\0';
	} else {
		rm = 1;
	}

	if (rev == NULL && rm != 1) {
		if ((rev = rcsnum_parse(rnum)) == NULL)
			errx(1, "bad revision %s", rnum);
	}

	if (rcsflags & RCSPROG_NFLAG)
		rm = 1;

	if (rm == 1) {
		if (rcs_sym_remove(file, symname) < 0) {
			if (rcs_errno == RCS_ERR_NOENT &&
			    !(rcsflags & RCSPROG_NFLAG))
				warnx("cannot delete nonexisting symbol %s",
				    symname);
		} else {
			if (rcsflags & RCSPROG_NFLAG)
				rm = 0;
		}
	}

	if (rm == 0) {
		if (rcs_sym_add(file, symname, rev) < 0 &&
		    rcs_errno == RCS_ERR_DUPENT) {
			rcsnum_tostr(rcs_sym_getrev(file, symname),
			    rbuf, sizeof(rbuf));
			errx(1, "symbolic name %s already bound to %s",
			    symname, rbuf);
		}
	}
}