File: [local] / src / usr.bin / cvs / cvs.c (download)
Revision 1.18, Tue Dec 7 17:10:56 2004 UTC (19 years, 6 months ago) by tedu
Branch: MAIN
Changes since 1.17: +10 -18 lines
less whitespace, more pretty. ok jfb
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/* $OpenBSD: cvs.c,v 1.18 2004/12/07 17:10:56 tedu Exp $ */
/*
* Copyright (c) 2004 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 <sys/types.h>
#include <sys/wait.h>
#include <err.h>
#include <pwd.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <sysexits.h>
#include "cvs.h"
#include "log.h"
#include "file.h"
extern char *__progname;
/* verbosity level: 0 = really quiet, 1 = quiet, 2 = verbose */
int verbosity = 2;
/* compression level used with zlib, 0 meaning no compression taking place */
int cvs_compress = 0;
int cvs_readrc = 1; /* read .cvsrc on startup */
int cvs_trace = 0;
int cvs_nolog = 0;
int cvs_readonly = 0;
int cvs_nocase = 0; /* set to 1 to disable filename case sensitivity */
char *cvs_defargs; /* default global arguments from .cvsrc */
char *cvs_command; /* name of the command we are running */
int cvs_cmdop;
char *cvs_rootstr;
char *cvs_rsh = CVS_RSH_DEFAULT;
char *cvs_editor = CVS_EDITOR_DEFAULT;
char *cvs_msg = NULL;
/* hierarchy of all the files affected by the command */
CVSFILE *cvs_files;
/*
* Command dispatch table
* ----------------------
*
* The synopsis field should only contain the list of arguments that the
* command supports, without the actual command's name.
*
* Command handlers are expected to return 0 if no error occured, or one of
* the values known in sysexits.h in case of an error. In case the error
* returned is EX_USAGE, the command's usage string is printed to standard
* error before returning.
*/
static struct cvs_cmd {
int cmd_op;
char cmd_name[CVS_CMD_MAXNAMELEN];
char cmd_alias[CVS_CMD_MAXALIAS][CVS_CMD_MAXNAMELEN];
int (*cmd_hdlr)(int, char **);
char *cmd_synopsis;
char *cmd_opts;
char cmd_descr[CVS_CMD_MAXDESCRLEN];
char *cmd_defargs;
} cvs_cdt[] = {
{
CVS_OP_ADD, "add", { "ad", "new" }, cvs_add,
"[-m msg] file ...",
"",
"Add a new file/directory to the repository",
NULL,
},
{
-1, "admin", { "adm", "rcs" }, NULL,
"",
"",
"Administration front end for rcs",
NULL,
},
{
CVS_OP_ANNOTATE, "annotate", { "ann" }, NULL,
"",
"",
"Show last revision where each line was modified",
NULL,
},
{
CVS_OP_CHECKOUT, "checkout", { "co", "get" }, cvs_checkout,
"",
"",
"Checkout sources for editing",
NULL,
},
{
CVS_OP_COMMIT, "commit", { "ci", "com" }, cvs_commit,
"[-flR] [-F logfile | -m msg] [-r rev] ...",
"F:flm:Rr:",
"Check files into the repository",
NULL,
},
{
CVS_OP_DIFF, "diff", { "di", "dif" }, cvs_diff,
"[-cilu] [-D date] [-r rev] ...",
"cD:ilur:",
"Show differences between revisions",
NULL,
},
{
-1, "edit", { }, NULL,
"",
"",
"Get ready to edit a watched file",
NULL,
},
{
-1, "editors", { }, NULL,
"",
"",
"See who is editing a watched file",
NULL,
},
{
-1, "export", { "ex", "exp" }, NULL,
"",
"",
"Export sources from CVS, similar to checkout",
NULL,
},
{
CVS_OP_HISTORY, "history", { "hi", "his" }, cvs_history,
"",
"",
"Show repository access history",
NULL,
},
{
CVS_OP_IMPORT, "import", { "im", "imp" }, NULL,
"[-d] [-b branch] [-I ign] [-k subst] [-m msg] "
"repository vendor-tag release-tags ...",
"b:dI:k:m:",
"Import sources into CVS, using vendor branches",
NULL,
},
{
CVS_OP_INIT, "init", { }, cvs_init,
"",
"",
"Create a CVS repository if it doesn't exist",
NULL,
},
#if defined(HAVE_KERBEROS)
{
"kserver", {}, NULL
"",
"",
"Start a Kerberos authentication CVS server",
NULL,
},
#endif
{
CVS_OP_LOG, "log", { "lo" }, cvs_getlog,
"",
"",
"Print out history information for files",
NULL,
},
{
-1, "login", {}, NULL,
"",
"",
"Prompt for password for authenticating server",
NULL,
},
{
-1, "logout", {}, NULL,
"",
"",
"Removes entry in .cvspass for remote repository",
NULL,
},
{
-1, "rdiff", {}, NULL,
"",
"",
"Create 'patch' format diffs between releases",
NULL,
},
{
-1, "release", {}, NULL,
"",
"",
"Indicate that a Module is no longer in use",
NULL,
},
{
CVS_OP_REMOVE, "remove", {}, NULL,
"",
"",
"Remove an entry from the repository",
NULL,
},
{
-1, "rlog", {}, NULL,
"",
"",
"Print out history information for a module",
NULL,
},
{
-1, "rtag", {}, NULL,
"",
"",
"Add a symbolic tag to a module",
NULL,
},
{
CVS_OP_SERVER, "server", {}, cvs_server,
"",
"",
"Server mode",
NULL,
},
{
CVS_OP_STATUS, "status", { "st", "stat" }, cvs_status,
"",
"",
"Display status information on checked out files",
NULL,
},
{
CVS_OP_TAG, "tag", { "ta", "freeze" }, NULL,
"",
"",
"Add a symbolic tag to checked out version of files",
NULL,
},
{
-1, "unedit", {}, NULL,
"",
"",
"Undo an edit command",
NULL,
},
{
CVS_OP_UPDATE, "update", { "up", "upd" }, cvs_update,
"",
"",
"Bring work tree in sync with repository",
NULL,
},
{
CVS_OP_VERSION, "version", { "ve", "ver" }, cvs_version,
"", "",
"Show current CVS version(s)",
NULL,
},
{
-1, "watch", {}, NULL,
"",
"",
"Set watches",
NULL,
},
{
-1, "watchers", {}, NULL,
"",
"",
"See who is watching a file",
NULL,
},
};
#define CVS_NBCMD (sizeof(cvs_cdt)/sizeof(cvs_cdt[0]))
void usage (void);
void sigchld_hdlr (int);
void cvs_read_rcfile (void);
struct cvs_cmd* cvs_findcmd (const char *);
int cvs_getopt (int, char **);
/*
* usage()
*
* Display usage information.
*/
void
usage(void)
{
fprintf(stderr,
"Usage: %s [-lQqtvx] [-b bindir] [-d root] [-e editor] [-z level] "
"command [options] ...\n",
__progname);
}
int
main(int argc, char **argv)
{
char *envstr, *cmd_argv[CVS_CMD_MAXARG], **targv;
int i, ret, cmd_argc;
struct cvs_cmd *cmdp;
if (cvs_log_init(LD_STD, 0) < 0)
err(1, "failed to initialize logging");
/* by default, be very verbose */
(void)cvs_log_filter(LP_FILTER_UNSET, LP_INFO);
#ifdef DEBUG
(void)cvs_log_filter(LP_FILTER_UNSET, LP_DEBUG);
#endif
/* check environment so command-line options override it */
if ((envstr = getenv("CVS_RSH")) != NULL)
cvs_rsh = envstr;
if (((envstr = getenv("CVSEDITOR")) != NULL) ||
((envstr = getenv("VISUAL")) != NULL) ||
((envstr = getenv("EDITOR")) != NULL))
cvs_editor = envstr;
ret = cvs_getopt(argc, argv);
argc -= ret;
argv += ret;
if (argc == 0) {
usage();
exit(EX_USAGE);
}
cvs_command = argv[0];
if (cvs_readrc) {
cvs_read_rcfile();
if (cvs_defargs != NULL) {
targv = cvs_makeargv(cvs_defargs, &i);
if (targv == NULL) {
cvs_log(LP_ERR,
"failed to load default arguments to %s",
__progname);
exit(EX_OSERR);
}
cvs_getopt(i, targv);
cvs_freeargv(targv, i);
free(targv);
}
}
/* setup signal handlers */
signal(SIGPIPE, SIG_IGN);
cvs_file_init();
ret = -1;
cmdp = cvs_findcmd(cvs_command);
if (cmdp == NULL) {
fprintf(stderr, "Unknown command: `%s'\n\n", cvs_command);
fprintf(stderr, "CVS commands are:\n");
for (i = 0; i < (int)CVS_NBCMD; i++)
fprintf(stderr, "\t%-16s%s\n",
cvs_cdt[i].cmd_name, cvs_cdt[i].cmd_descr);
exit(EX_USAGE);
}
if (cmdp->cmd_hdlr == NULL) {
cvs_log(LP_ERR, "command `%s' not implemented", cvs_command);
exit(1);
}
cvs_cmdop = cmdp->cmd_op;
cmd_argc = 0;
memset(cmd_argv, 0, sizeof(cmd_argv));
cmd_argv[cmd_argc++] = argv[0];
if (cmdp->cmd_defargs != NULL) {
/* transform into a new argument vector */
ret = cvs_getargv(cmdp->cmd_defargs, cmd_argv + 1,
CVS_CMD_MAXARG - 1);
if (ret < 0) {
cvs_log(LP_ERRNO, "failed to generate argument vector "
"from default arguments");
exit(EX_DATAERR);
}
cmd_argc += ret;
}
for (ret = 1; ret < argc; ret++)
cmd_argv[cmd_argc++] = argv[ret];
ret = (*cmdp->cmd_hdlr)(cmd_argc, cmd_argv);
if (ret == EX_USAGE) {
fprintf(stderr, "Usage: %s %s %s\n", __progname, cvs_command,
cmdp->cmd_synopsis);
}
if (cvs_files != NULL)
cvs_file_free(cvs_files);
return (ret);
}
int
cvs_getopt(int argc, char **argv)
{
int ret;
char *ep;
while ((ret = getopt(argc, argv, "b:d:e:fHlnQqrtvz:")) != -1) {
switch (ret) {
case 'b':
/*
* We do not care about the bin directory for RCS files
* as this program has no dependencies on RCS programs,
* so it is only here for backwards compatibility.
*/
cvs_log(LP_NOTICE, "the -b argument is obsolete");
break;
case 'd':
cvs_rootstr = optarg;
break;
case 'e':
cvs_editor = optarg;
break;
case 'f':
cvs_readrc = 0;
break;
case 'l':
cvs_nolog = 1;
break;
case 'n':
break;
case 'Q':
verbosity = 0;
break;
case 'q':
/* don't override -Q */
if (verbosity > 1)
verbosity = 1;
break;
case 'r':
cvs_readonly = 1;
break;
case 't':
cvs_trace = 1;
break;
case 'v':
printf("%s\n", CVS_VERSION);
exit(0);
/* NOTREACHED */
break;
case 'x':
/*
* Kerberos encryption support, kept for compatibility
*/
break;
case 'z':
cvs_compress = (int)strtol(optarg, &ep, 10);
if (*ep != '\0')
errx(1, "error parsing compression level");
if (cvs_compress < 0 || cvs_compress > 9)
errx(1, "gzip compression level must be "
"between 0 and 9");
break;
default:
usage();
exit(EX_USAGE);
}
}
ret = optind;
optind = 1;
optreset = 1; /* for next call */
return (ret);
}
/*
* cvs_findcmd()
*
* Find the entry in the command dispatch table whose name or one of its
* aliases matches <cmd>.
* Returns a pointer to the command entry on success, NULL on failure.
*/
struct cvs_cmd*
cvs_findcmd(const char *cmd)
{
u_int i, j;
struct cvs_cmd *cmdp;
cmdp = NULL;
for (i = 0; (i < CVS_NBCMD) && (cmdp == NULL); i++) {
if (strcmp(cmd, cvs_cdt[i].cmd_name) == 0)
cmdp = &cvs_cdt[i];
else {
for (j = 0; j < CVS_CMD_MAXALIAS; j++) {
if (strcmp(cmd, cvs_cdt[i].cmd_alias[j]) == 0) {
cmdp = &cvs_cdt[i];
break;
}
}
}
}
return (cmdp);
}
/*
* cvs_read_rcfile()
*
* Read the CVS `.cvsrc' file in the user's home directory. If the file
* exists, it should contain a list of arguments that should always be given
* implicitly to the specified commands.
*/
void
cvs_read_rcfile(void)
{
char rcpath[MAXPATHLEN], linebuf[128], *lp;
size_t len;
struct cvs_cmd *cmdp;
struct passwd *pw;
FILE *fp;
pw = getpwuid(getuid());
if (pw == NULL) {
cvs_log(LP_NOTICE, "failed to get user's password entry");
return;
}
snprintf(rcpath, sizeof(rcpath), "%s/%s", pw->pw_dir, CVS_PATH_RC);
fp = fopen(rcpath, "r");
if (fp == NULL) {
if (errno != ENOENT)
cvs_log(LP_NOTICE, "failed to open `%s': %s", rcpath,
strerror(errno));
return;
}
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) {
if ((len = strlen(linebuf)) == 0)
continue;
if (linebuf[len - 1] != '\n') {
cvs_log(LP_WARN, ".cvsrc line too long");
break;
}
linebuf[--len] = '\0';
lp = strchr(linebuf, ' ');
if (lp == NULL)
continue; /* ignore lines with no arguments */
*lp = '\0';
if (strcmp(linebuf, "cvs") == 0) {
/*
* Global default options. In the case of cvs only,
* we keep the 'cvs' string as first argument because
* getopt() does not like starting at index 0 for
* argument processing.
*/
*lp = ' ';
cvs_defargs = strdup(linebuf);
if (cvs_defargs == NULL)
cvs_log(LP_ERRNO,
"failed to copy global arguments");
} else {
lp++;
cmdp = cvs_findcmd(linebuf);
if (cmdp == NULL) {
cvs_log(LP_NOTICE,
"unknown command `%s' in cvsrc",
linebuf);
continue;
}
cmdp->cmd_defargs = strdup(lp);
if (cmdp->cmd_defargs == NULL)
cvs_log(LP_ERRNO,
"failed to copy default arguments for %s",
cmdp->cmd_name);
}
}
if (ferror(fp)) {
cvs_log(LP_NOTICE, "failed to read line from cvsrc");
}
(void)fclose(fp);
}