/* $OpenBSD: cvs.c,v 1.5 2004/07/29 17:48:19 jfb Exp $ */ /* * Copyright (c) 2004 Jean-Francois Brousseau * 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 #include #include #include #include #include #include #include #include #include #include #include "cvs.h" #include "log.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_trace = 0; int cvs_nolog = 0; int cvs_readonly = 0; /* name of the command we are running */ char *cvs_command; char *cvs_rootstr; char *cvs_rsh = CVS_RSH_DEFAULT; char *cvs_editor = CVS_EDITOR_DEFAULT; struct cvsroot *cvs_root = NULL; /* * 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 { 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_descr[CVS_CMD_MAXDESCRLEN]; } cvs_cdt[] = { { "add", { "ad", "new" }, cvs_add, "[-m msg] file ...", "Add a new file/directory to the repository", }, { "admin", { "adm", "rcs" }, NULL, "", "Administration front end for rcs", }, { "annotate", { "ann" }, NULL, "", "Show last revision where each line was modified", }, { "checkout", { "co", "get" }, cvs_checkout, "", "Checkout sources for editing", }, { "commit", { "ci", "com" }, cvs_commit, "[-flR] [-F logfile | -m msg] [-r rev] ...", "Check files into the repository", }, { "diff", { "di", "dif" }, cvs_diff, "[-cilu] [-D date] [-r rev] ...", "Show differences between revisions", }, { "edit", { }, NULL, "", "Get ready to edit a watched file", }, { "editors", { }, NULL, "", "See who is editing a watched file", }, { "export", { "ex", "exp" }, NULL, "", "Export sources from CVS, similar to checkout", }, { "history", { "hi", "his" }, cvs_history, "", "Show repository access history", }, { "import", { "im", "imp" }, NULL, "", "Import sources into CVS, using vendor branches", }, { "init", { }, cvs_init, "", "Create a CVS repository if it doesn't exist", }, #if defined(HAVE_KERBEROS) { "kserver", {}, NULL "", "Start a Kerberos authentication CVS server", }, #endif { "log", { "lo" }, cvs_getlog, "", "Print out history information for files", }, { "login", {}, NULL, "", "Prompt for password for authenticating server", }, { "logout", {}, NULL, "", "Removes entry in .cvspass for remote repository", }, { "rdiff", {}, NULL, "", "Create 'patch' format diffs between releases", }, { "release", {}, NULL, "", "Indicate that a Module is no longer in use", }, { "remove", {}, NULL, "", "Remove an entry from the repository", }, { "rlog", {}, NULL, "", "Print out history information for a module", }, { "rtag", {}, NULL, "", "Add a symbolic tag to a module", }, { "server", {}, cvs_server, "", "Server mode", }, { "status", {}, NULL, "", "Display status information on checked out files", }, { "tag", { "ta", }, NULL, "", "Add a symbolic tag to checked out version of files", }, { "unedit", {}, NULL, "", "Undo an edit command", }, { "update", {}, cvs_update, "", "Bring work tree in sync with repository", }, { "version", {}, cvs_version, "", "Show current CVS version(s)", }, { "watch", {}, NULL, "", "Set watches", }, { "watchers", {}, NULL, "", "See who is watching a file", }, }; #define CVS_NBCMD (sizeof(cvs_cdt)/sizeof(cvs_cdt[0])) void usage (void); void sigchld_hdlr (int); void cvs_readrc (void); struct cvs_cmd* cvs_findcmd (const char *); /* * sigchld_hdlr() * * Handler for the SIGCHLD signal, which can be received in case we are * running a remote server and it dies. */ void sigchld_hdlr(int signo) { int status; pid_t pid; if ((pid = wait(&status)) == -1) { } } /* * usage() * * Display usage information. */ void usage(void) { fprintf(stderr, "Usage: %s [-lQqtv] [-d root] [-e editor] [-z level] " "command [options] ...\n", __progname); } int main(int argc, char **argv) { char *envstr, *ep; int ret; u_int i, readrc; struct cvs_cmd *cmdp; readrc = 1; 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; while ((ret = getopt(argc, argv, "d:e:fHlnQqrtvz:")) != -1) { switch (ret) { case 'd': cvs_rootstr = optarg; break; case 'e': cvs_editor = optarg; break; case 'f': 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 '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); } } argc -= optind; argv += optind; /* reset getopt() for use by commands */ optind = 1; optreset = 1; if (argc == 0) { usage(); exit(EX_USAGE); } /* setup signal handlers */ signal(SIGCHLD, sigchld_hdlr); cvs_file_init(); if (readrc) cvs_readrc(); cvs_command = argv[0]; 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 < 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); } ret = (*cmdp->cmd_hdlr)(argc, argv); if (ret == EX_USAGE) { fprintf(stderr, "Usage: %s %s %s\n", __progname, cvs_command, cmdp->cmd_synopsis); } return (ret); } /* * cvs_findcmd() * * Find the entry in the command dispatch table whose name or one of its * aliases matches . * 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_readrc() * * 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_readrc(void) { char rcpath[MAXPATHLEN], linebuf[128], *lp; 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) { lp = strchr(linebuf, ' '); /* ignore lines with no arguments */ if (lp == NULL) continue; *(lp++) = '\0'; if (strcmp(linebuf, "cvs") == 0) { /* global options */ } else { cmdp = cvs_findcmd(linebuf); if (cmdp == NULL) { cvs_log(LP_NOTICE, "unknown command `%s' in cvsrc", linebuf); continue; } } } if (ferror(fp)) { cvs_log(LP_NOTICE, "failed to read line from cvsrc"); } (void)fclose(fp); }