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Diffstat (limited to 'usr.bin/sccs/sccs.c')
| -rw-r--r-- | usr.bin/sccs/sccs.c | 1621 |
1 files changed, 0 insertions, 1621 deletions
diff --git a/usr.bin/sccs/sccs.c b/usr.bin/sccs/sccs.c deleted file mode 100644 index 2dfd76d..0000000 --- a/usr.bin/sccs/sccs.c +++ /dev/null @@ -1,1621 +0,0 @@ -/* - * Copyright (c) 1980, 1993 - * The 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 copyright[] = -"@(#) Copyright (c) 1980, 1993\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -static char sccsid[] = "@(#)sccs.c 8.1 (Berkeley) 6/6/93"; -#endif /* not lint */ - -#include <sys/cdefs.h> -#include <sys/param.h> -#include <sys/stat.h> -#include <sys/dir.h> -#include <signal.h> -#include <sysexits.h> -#include <errno.h> -#include <pwd.h> -#include <stdio.h> -#include "pathnames.h" - -/* -** SCCS.C -- human-oriented front end to the SCCS system. -** -** Without trying to add any functionality to speak of, this -** program tries to make SCCS a little more accessible to human -** types. The main thing it does is automatically put the -** string "SCCS/s." on the front of names. Also, it has a -** couple of things that are designed to shorten frequent -** combinations, e.g., "delget" which expands to a "delta" -** and a "get". -** -** This program can also function as a setuid front end. -** To do this, you should copy the source, renaming it to -** whatever you want, e.g., "syssccs". Change any defaults -** in the program (e.g., syssccs might default -d to -** "/usr/src/sys"). Then recompile and put the result -** as setuid to whomever you want. In this mode, sccs -** knows to not run setuid for certain programs in order -** to preserve security, and so forth. -** -** Usage: -** sccs [flags] command [args] -** -** Flags: -** -d<dir> <dir> represents a directory to search -** out of. It should be a full pathname -** for general usage. E.g., if <dir> is -** "/usr/src/sys", then a reference to the -** file "dev/bio.c" becomes a reference to -** "/usr/src/sys/dev/bio.c". -** -p<path> prepends <path> to the final component -** of the pathname. By default, this is -** "SCCS". For example, in the -d example -** above, the path then gets modified to -** "/usr/src/sys/dev/SCCS/s.bio.c". In -** more common usage (without the -d flag), -** "prog.c" would get modified to -** "SCCS/s.prog.c". In both cases, the -** "s." gets automatically prepended. -** -r run as the real user. -** -** Commands: -** admin, -** get, -** delta, -** rmdel, -** cdc, -** etc. Straight out of SCCS; only difference -** is that pathnames get modified as -** described above. -** enter Front end doing "sccs admin -i<name> <name>" -** create Macro for "enter" followed by "get". -** edit Macro for "get -e". -** unedit Removes a file being edited, knowing -** about p-files, etc. -** delget Macro for "delta" followed by "get". -** deledit Macro for "delta" followed by "get -e". -** branch Macro for "get -b -e", followed by "delta -** -s -n", followd by "get -e -t -g". -** diffs "diff" the specified version of files -** and the checked-out version. -** print Macro for "prs -e" followed by "get -p -m". -** tell List what files are being edited. -** info Print information about files being edited. -** clean Remove all files that can be -** regenerated from SCCS files. -** check Like info, but return exit status, for -** use in makefiles. -** fix Remove a top delta & reedit, but save -** the previous changes in that delta. -** -** Compilation Flags: -** UIDUSER -- determine who the user is by looking at the -** uid rather than the login name -- for machines -** where SCCS gets the user in this way. -** SCCSDIR -- if defined, forces the -d flag to take on -** this value. This is so that the setuid -** aspects of this program cannot be abused. -** This flag also disables the -p flag. -** SCCSPATH -- the default for the -p flag. -** MYNAME -- the title this program should print when it -** gives error messages. -** -** Compilation Instructions: -** cc -O -n -s sccs.c -** The flags listed above can be -D defined to simplify -** recompilation for variant versions. -** -** Author: -** Eric Allman, UCB/INGRES -** Copyright 1980 Regents of the University of California -*/ - - -/******************* Configuration Information ********************/ - -# ifndef SCCSPATH -# define SCCSPATH "SCCS" /* pathname in which to find s-files */ -# endif NOT SCCSPATH - -# ifndef MYNAME -# define MYNAME "sccs" /* name used for printing errors */ -# endif NOT MYNAME - -/**************** End of Configuration Information ****************/ - -typedef char bool; -# define TRUE 1 -# define FALSE 0 - -# define bitset(bit, word) ((bool) ((bit) & (word))) - -struct sccsprog -{ - char *sccsname; /* name of SCCS routine */ - short sccsoper; /* opcode, see below */ - short sccsflags; /* flags, see below */ - char *sccspath; /* pathname of binary implementing */ -}; - -/* values for sccsoper */ -# define PROG 0 /* call a program */ -# define CMACRO 1 /* command substitution macro */ -# define FIX 2 /* fix a delta */ -# define CLEAN 3 /* clean out recreatable files */ -# define UNEDIT 4 /* unedit a file */ -# define SHELL 5 /* call a shell file (like PROG) */ -# define DIFFS 6 /* diff between sccs & file out */ -# define DODIFF 7 /* internal call to diff program */ -# define ENTER 8 /* enter new files */ - -/* bits for sccsflags */ -# define NO_SDOT 0001 /* no s. on front of args */ -# define REALUSER 0002 /* protected (e.g., admin) */ - -/* modes for the "clean", "info", "check" ops */ -# define CLEANC 0 /* clean command */ -# define INFOC 1 /* info command */ -# define CHECKC 2 /* check command */ -# define TELLC 3 /* give list of files being edited */ - -/* -** Description of commands known to this program. -** First argument puts the command into a class. Second arg is -** info regarding treatment of this command. Third arg is a -** list of flags this command accepts from macros, etc. Fourth -** arg is the pathname of the implementing program, or the -** macro definition, or the arg to a sub-algorithm. -*/ - -struct sccsprog SccsProg[] = { - "admin", PROG, REALUSER, _PATH_SCCSADMIN, - "cdc", PROG, 0, _PATH_SCCSRMDEL, - "comb", PROG, 0, _PATH_SCCSCOMB, - "delta", PROG, 0, _PATH_SCCSDELTA, - "get", PROG, 0, _PATH_SCCSGET, - "help", PROG, NO_SDOT, _PATH_SCCSHELP, - "prs", PROG, 0, _PATH_SCCSPRS, - "prt", PROG, 0, _PATH_SCCSPRT, - "rmdel", PROG, REALUSER, _PATH_SCCSRMDEL, - "val", PROG, 0, _PATH_SCCSVAL, - "what", PROG, NO_SDOT, _PATH_SCCSWHAT, - "sccsdiff", SHELL, REALUSER, _PATH_SCCSDIFF, - "edit", CMACRO, NO_SDOT, "get -e", - "delget", CMACRO, NO_SDOT, "delta:mysrp/get:ixbeskcl -t", - "deledit", CMACRO, NO_SDOT, - "delta:mysrp -n/get:ixbskcl -e -t -g", - "fix", FIX, NO_SDOT, NULL, - "clean", CLEAN, REALUSER|NO_SDOT, - (char *) CLEANC, - "info", CLEAN, REALUSER|NO_SDOT, - (char *) INFOC, - "check", CLEAN, REALUSER|NO_SDOT, - (char *) CHECKC, - "tell", CLEAN, REALUSER|NO_SDOT, - (char *) TELLC, - "unedit", UNEDIT, NO_SDOT, NULL, - "diffs", DIFFS, NO_SDOT|REALUSER, - NULL, - "-diff", DODIFF, NO_SDOT|REALUSER, - _PATH_SCCSBDIFF, - "print", CMACRO, 0, "prs -e/get -p -m -s", - "branch", CMACRO, NO_SDOT, - "get:ixrc -e -b/delta: -s -n -ybranch-place-holder/get:pl -e -t -g", - "enter", ENTER, NO_SDOT, NULL, - "create", CMACRO, NO_SDOT, "enter/get:ixbeskcl -t", - NULL, -1, 0, NULL -}; - -/* one line from a p-file */ -struct pfile -{ - char *p_osid; /* old SID */ - char *p_nsid; /* new SID */ - char *p_user; /* user who did edit */ - char *p_date; /* date of get */ - char *p_time; /* time of get */ - char *p_aux; /* extra info at end */ -}; - -char *SccsPath = SCCSPATH; /* pathname of SCCS files */ -# ifdef SCCSDIR -char *SccsDir = SCCSDIR; /* directory to begin search from */ -# else -char *SccsDir = ""; -# endif -char MyName[] = MYNAME; /* name used in messages */ -int OutFile = -1; /* override output file for commands */ -bool RealUser; /* if set, running as real user */ -# ifdef DEBUG -bool Debug; /* turn on tracing */ -# endif -# ifndef V6 -extern char *getenv(); -# endif V6 - -char *gstrcat(), *strcat(); -char *gstrncat(), *strncat(); -char *gstrcpy(), *strcpy(); -#define FBUFSIZ BUFSIZ -#define PFILELG 120 - -main(argc, argv) - int argc; - char **argv; -{ - register char *p; - extern struct sccsprog *lookup(); - register int i; -# ifndef V6 -# ifndef SCCSDIR - register struct passwd *pw; - extern struct passwd *getpwnam(); - char buf[FBUFSIZ]; - - /* pull "SccsDir" out of the environment (possibly) */ - p = getenv("PROJECTDIR"); - if (p != NULL && p[0] != '\0') - { - if (p[0] == '/') - SccsDir = p; - else - { - pw = getpwnam(p); - if (pw == NULL) - { - usrerr("user %s does not exist", p); - exit(EX_USAGE); - } - gstrcpy(buf, pw->pw_dir, sizeof(buf)); - gstrcat(buf, "/src", sizeof(buf)); - if (access(buf, 0) < 0) - { - gstrcpy(buf, pw->pw_dir, sizeof(buf)); - gstrcat(buf, "/source", sizeof(buf)); - if (access(buf, 0) < 0) - { - usrerr("project %s has no source!", p); - exit(EX_USAGE); - } - } - SccsDir = buf; - } - } -# endif SCCSDIR -# endif V6 - - /* - ** Detect and decode flags intended for this program. - */ - - if (argc < 2) - { - fprintf(stderr, "Usage: %s [flags] command [flags]\n", MyName); - exit(EX_USAGE); - } - argv[argc] = NULL; - - if (lookup(argv[0]) == NULL) - { - while ((p = *++argv) != NULL) - { - if (*p != '-') - break; - switch (*++p) - { - case 'r': /* run as real user */ - setuid(getuid()); - RealUser++; - break; - -# ifndef SCCSDIR - case 'p': /* path of sccs files */ - SccsPath = ++p; - if (SccsPath[0] == '\0' && argv[1] != NULL) - SccsPath = *++argv; - break; - - case 'd': /* directory to search from */ - SccsDir = ++p; - if (SccsDir[0] == '\0' && argv[1] != NULL) - SccsDir = *++argv; - break; -# endif - -# ifdef DEBUG - case 'T': /* trace */ - Debug++; - break; -# endif - - default: - usrerr("unknown option -%s", p); - break; - } - } - if (SccsPath[0] == '\0') - SccsPath = "."; - } - - i = command(argv, FALSE, ""); - exit(i); -} - -/* -** COMMAND -- look up and perform a command -** -** This routine is the guts of this program. Given an -** argument vector, it looks up the "command" (argv[0]) -** in the configuration table and does the necessary stuff. -** -** Parameters: -** argv -- an argument vector to process. -** forkflag -- if set, fork before executing the command. -** editflag -- if set, only include flags listed in the -** sccsklets field of the command descriptor. -** arg0 -- a space-seperated list of arguments to insert -** before argv. -** -** Returns: -** zero -- command executed ok. -** else -- error status. -** -** Side Effects: -** none. -*/ - -command(argv, forkflag, arg0) - char **argv; - bool forkflag; - char *arg0; -{ - register struct sccsprog *cmd; - register char *p; - char buf[FBUFSIZ]; - extern struct sccsprog *lookup(); - char *nav[1000]; - char **np; - register char **ap; - register int i; - register char *q; - extern bool unedit(); - int rval = 0; - extern char *index(); - extern char *makefile(); - char *editchs; - extern char *tail(); - -# ifdef DEBUG - if (Debug) - { - printf("command:\n\t\"%s\"\n", arg0); - for (np = argv; *np != NULL; np++) - printf("\t\"%s\"\n", *np); - } -# endif - - /* - ** Copy arguments. - ** Copy from arg0 & if necessary at most one arg - ** from argv[0]. - */ - - np = ap = &nav[1]; - editchs = NULL; - for (p = arg0, q = buf; *p != '\0' && *p != '/'; ) - { - *np++ = q; - while (*p == ' ') - p++; - while (*p != ' ' && *p != '\0' && *p != '/' && *p != ':') - *q++ = *p++; - *q++ = '\0'; - if (*p == ':') - { - editchs = q; - while (*++p != '\0' && *p != '/' && *p != ' ') - *q++ = *p; - *q++ = '\0'; - } - } - *np = NULL; - if (*ap == NULL) - *np++ = *argv++; - - /* - ** Look up command. - ** At this point, *ap is the command name. - */ - - cmd = lookup(*ap); - if (cmd == NULL) - { - usrerr("Unknown command \"%s\"", *ap); - return (EX_USAGE); - } - - /* - ** Copy remaining arguments doing editing as appropriate. - */ - - for (; *argv != NULL; argv++) - { - p = *argv; - if (*p == '-') - { - if (p[1] == '\0' || editchs == NULL || index(editchs, p[1]) != NULL) - *np++ = p; - } - else - { - if (!bitset(NO_SDOT, cmd->sccsflags)) - p = makefile(p); - if (p != NULL) - *np++ = p; - } - } - *np = NULL; - - /* - ** Interpret operation associated with this command. - */ - - switch (cmd->sccsoper) - { - case SHELL: /* call a shell file */ - *ap = cmd->sccspath; - *--ap = "sh"; - rval = callprog(_PATH_BSHELL, cmd->sccsflags, ap, forkflag); - break; - - case PROG: /* call an sccs prog */ - rval = callprog(cmd->sccspath, cmd->sccsflags, ap, forkflag); - break; - - case CMACRO: /* command macro */ - /* step through & execute each part of the macro */ - for (p = cmd->sccspath; *p != '\0'; p++) - { - q = p; - while (*p != '\0' && *p != '/') - p++; - rval = command(&ap[1], *p != '\0', q); - if (rval != 0) - break; - } - break; - - case FIX: /* fix a delta */ - if (ap[1]==0 || strncmp(ap[1], "-r", 2)!=0) - { - usrerr("-r flag needed for fix command"); - rval = EX_USAGE; - break; - } - - /* get the version with all changes */ - rval = command(&ap[1], TRUE, "get -k"); - - /* now remove that version from the s-file */ - if (rval == 0) - rval = command(&ap[1], TRUE, "rmdel:r"); - - /* and edit the old version (but don't clobber new vers) */ - if (rval == 0) - rval = command(&ap[2], FALSE, "get -e -g"); - break; - - case CLEAN: - rval = clean((int) cmd->sccspath, ap); - break; - - case UNEDIT: - for (argv = np = &ap[1]; *argv != NULL; argv++) - { - if (unedit(*argv)) - *np++ = *argv; - } - *np = NULL; - - /* get all the files that we unedited successfully */ - if (np > &ap[1]) - rval = command(&ap[1], FALSE, "get"); - break; - - case DIFFS: /* diff between s-file & edit file */ - /* find the end of the flag arguments */ - for (np = &ap[1]; *np != NULL && **np == '-'; np++) - continue; - argv = np; - - /* for each file, do the diff */ - p = argv[1]; - while (*np != NULL) - { - /* messy, but we need a null terminated argv */ - *argv = *np++; - argv[1] = NULL; - i = dodiff(ap, tail(*argv)); - if (rval == 0) - rval = i; - argv[1] = p; - } - break; - - case DODIFF: /* internal diff call */ - setuid(getuid()); - for (np = ap; *np != NULL; np++) - { - if ((*np)[0] == '-' && (*np)[1] == 'C') - (*np)[1] = 'c'; - } - - /* insert "-" argument */ - np[1] = NULL; - np[0] = np[-1]; - np[-1] = "-"; - - /* execute the diff program of choice */ -# ifndef V6 - execvp("diff", ap); -# endif - execv(cmd->sccspath, argv); - syserr("cannot exec %s", cmd->sccspath); - exit(EX_OSERR); - - case ENTER: /* enter new sccs files */ - /* skip over flag arguments */ - for (np = &ap[1]; *np != NULL && **np == '-'; np++) - continue; - argv = np; - - /* do an admin for each file */ - p = argv[1]; - while (*np != NULL) - { - printf("\n%s:\n", *np); - strcpy(buf, "-i"); - gstrcat(buf, *np, sizeof(buf)); - ap[0] = buf; - argv[0] = tail(*np); - argv[1] = NULL; - rval = command(ap, TRUE, "admin"); - argv[1] = p; - if (rval == 0) - { - strcpy(buf, ","); - gstrcat(buf, tail(*np), sizeof(buf)); - if (link(*np, buf) >= 0) - unlink(*np); - } - np++; - } - break; - - default: - syserr("oper %d", cmd->sccsoper); - exit(EX_SOFTWARE); - } -# ifdef DEBUG - if (Debug) - printf("command: rval=%d\n", rval); -# endif - return (rval); -} - -/* -** LOOKUP -- look up an SCCS command name. -** -** Parameters: -** name -- the name of the command to look up. -** -** Returns: -** ptr to command descriptor for this command. -** NULL if no such entry. -** -** Side Effects: -** none. -*/ - -struct sccsprog * -lookup(name) - char *name; -{ - register struct sccsprog *cmd; - - for (cmd = SccsProg; cmd->sccsname != NULL; cmd++) - { - if (strcmp(cmd->sccsname, name) == 0) - return (cmd); - } - return (NULL); -} - -/* -** CALLPROG -- call a program -** -** Used to call the SCCS programs. -** -** Parameters: -** progpath -- pathname of the program to call. -** flags -- status flags from the command descriptors. -** argv -- an argument vector to pass to the program. -** forkflag -- if true, fork before calling, else just -** exec. -** -** Returns: -** The exit status of the program. -** Nothing if forkflag == FALSE. -** -** Side Effects: -** Can exit if forkflag == FALSE. -*/ - -callprog(progpath, flags, argv, forkflag) - char *progpath; - short flags; - char **argv; - bool forkflag; -{ - register int i; - register int wpid; - auto int st; - register int sigcode; - register int coredumped; - register const char *sigmsg; - char sigmsgbuf[10+1]; /* "Signal 127" + terminating '\0' */ - -# ifdef DEBUG - if (Debug) - { - printf("callprog:\n"); - for (i = 0; argv[i] != NULL; i++) - printf("\t\"%s\"\n", argv[i]); - } -# endif - - if (*argv == NULL) - return (-1); - - /* - ** Fork if appropriate. - */ - - if (forkflag) - { -# ifdef DEBUG - if (Debug) - printf("Forking\n"); -# endif - i = fork(); - if (i < 0) - { - syserr("cannot fork"); - exit(EX_OSERR); - } - else if (i > 0) - { - while ((wpid = wait(&st)) != -1 && wpid != i) - ; - if ((sigcode = st & 0377) == 0) - st = (st >> 8) & 0377; - else - { - coredumped = sigcode & 0200; - sigcode &= 0177; - if (sigcode != SIGINT && sigcode != SIGPIPE) - { - if (sigcode < NSIG) - sigmsg = sys_siglist[sigcode]; - else - { - sprintf(sigmsgbuf, "Signal %d", - sigcode); - sigmsg = sigmsgbuf; - } - fprintf(stderr, "sccs: %s: %s%s", argv[0], - sigmsg, - coredumped ? " - core dumped": ""); - } - st = EX_SOFTWARE; - } - if (OutFile >= 0) - { - close(OutFile); - OutFile = -1; - } - return (st); - } - } - else if (OutFile >= 0) - { - syserr("callprog: setting stdout w/o forking"); - exit(EX_SOFTWARE); - } - - /* set protection as appropriate */ - if (bitset(REALUSER, flags)) - setuid(getuid()); - - /* change standard input & output if needed */ - if (OutFile >= 0) - { - close(1); - dup(OutFile); - close(OutFile); - } - - /* call real SCCS program */ - execv(progpath, argv); - syserr("cannot execute %s", progpath); - exit(EX_UNAVAILABLE); - /*NOTREACHED*/ -} - -/* -** MAKEFILE -- make filename of SCCS file -** -** If the name passed is already the name of an SCCS file, -** just return it. Otherwise, munge the name into the name -** of the actual SCCS file. -** -** There are cases when it is not clear what you want to -** do. For example, if SccsPath is an absolute pathname -** and the name given is also an absolute pathname, we go -** for SccsPath (& only use the last component of the name -** passed) -- this is important for security reasons (if -** sccs is being used as a setuid front end), but not -** particularly intuitive. -** -** Parameters: -** name -- the file name to be munged. -** -** Returns: -** The pathname of the sccs file. -** NULL on error. -** -** Side Effects: -** none. -*/ - -char * -makefile(name) - char *name; -{ - register char *p; - char buf[3*FBUFSIZ]; - extern char *malloc(); - extern char *rindex(); - extern bool safepath(); - extern bool isdir(); - register char *q; - - p = rindex(name, '/'); - if (p == NULL) - p = name; - else - p++; - - /* - ** Check to see that the path is "safe", i.e., that we - ** are not letting some nasty person use the setuid part - ** of this program to look at or munge some presumably - ** hidden files. - */ - - if (SccsDir[0] == '/' && !safepath(name)) - return (NULL); - - /* - ** Create the base pathname. - */ - - /* first the directory part */ - if (SccsDir[0] != '\0' && name[0] != '/' && strncmp(name, "./", 2) != 0) - { - gstrcpy(buf, SccsDir, sizeof(buf)); - gstrcat(buf, "/", sizeof(buf)); - } - else - gstrcpy(buf, "", sizeof(buf)); - - /* then the head of the pathname */ - gstrncat(buf, name, p - name, sizeof(buf)); - q = &buf[strlen(buf)]; - - /* now copy the final part of the name, in case useful */ - gstrcpy(q, p, sizeof(buf)); - - /* so is it useful? */ - if (strncmp(p, "s.", 2) != 0 && !isdir(buf)) - { - /* sorry, no; copy the SCCS pathname & the "s." */ - gstrcpy(q, SccsPath, sizeof(buf)); - gstrcat(buf, "/s.", sizeof(buf)); - - /* and now the end of the name */ - gstrcat(buf, p, sizeof(buf)); - } - - /* if i haven't changed it, why did I do all this? */ - if (strcmp(buf, name) == 0) - p = name; - else - { - /* but if I have, squirrel it away */ - p = malloc(strlen(buf) + 1); - if (p == NULL) - { - perror("Sccs: no mem"); - exit(EX_OSERR); - } - strcpy(p, buf); - } - - return (p); -} - -/* -** ISDIR -- return true if the argument is a directory. -** -** Parameters: -** name -- the pathname of the file to check. -** -** Returns: -** TRUE if 'name' is a directory, FALSE otherwise. -** -** Side Effects: -** none. -*/ - -bool -isdir(name) - char *name; -{ - struct stat stbuf; - - return (stat(name, &stbuf) >= 0 && (stbuf.st_mode & S_IFMT) == S_IFDIR); -} - -/* -** SAFEPATH -- determine whether a pathname is "safe" -** -** "Safe" pathnames only allow you to get deeper into the -** directory structure, i.e., full pathnames and ".." are -** not allowed. -** -** Parameters: -** p -- the name to check. -** -** Returns: -** TRUE -- if the path is safe. -** FALSE -- if the path is not safe. -** -** Side Effects: -** Prints a message if the path is not safe. -*/ - -bool -safepath(p) - register char *p; -{ - extern char *index(); - - if (*p != '/') - { - while (strncmp(p, "../", 3) != 0 && strcmp(p, "..") != 0) - { - p = index(p, '/'); - if (p == NULL) - return (TRUE); - p++; - } - } - - printf("You may not use full pathnames or \"..\"\n"); - return (FALSE); -} - -/* -** CLEAN -- clean out recreatable files -** -** Any file for which an "s." file exists but no "p." file -** exists in the current directory is purged. -** -** Parameters: -** mode -- tells whether this came from a "clean", "info", or -** "check" command. -** argv -- the rest of the argument vector. -** -** Returns: -** none. -** -** Side Effects: -** Removes files in the current directory. -** Prints information regarding files being edited. -** Exits if a "check" command. -*/ - -clean(mode, argv) - int mode; - char **argv; -{ - struct direct *dir; - char buf[FBUFSIZ]; - char *bufend; - register DIR *dirp; - register char *basefile; - bool gotedit; - bool gotpfent; - FILE *pfp; - bool nobranch = FALSE; - extern struct pfile *getpfent(); - register struct pfile *pf; - register char **ap; - extern char *username(); - char *usernm = NULL; - char *subdir = NULL; - char *cmdname; - - /* - ** Process the argv - */ - - cmdname = *argv; - for (ap = argv; *++ap != NULL; ) - { - if (**ap == '-') - { - /* we have a flag */ - switch ((*ap)[1]) - { - case 'b': - nobranch = TRUE; - break; - - case 'u': - if ((*ap)[2] != '\0') - usernm = &(*ap)[2]; - else if (ap[1] != NULL && ap[1][0] != '-') - usernm = *++ap; - else - usernm = username(); - break; - } - } - else - { - if (subdir != NULL) - usrerr("too many args"); - else - subdir = *ap; - } - } - - /* - ** Find and open the SCCS directory. - */ - - gstrcpy(buf, SccsDir, sizeof(buf)); - if (buf[0] != '\0') - gstrcat(buf, "/", sizeof(buf)); - if (subdir != NULL) - { - gstrcat(buf, subdir, sizeof(buf)); - gstrcat(buf, "/", sizeof(buf)); - } - gstrcat(buf, SccsPath, sizeof(buf)); - bufend = &buf[strlen(buf)]; - - dirp = opendir(buf); - if (dirp == NULL) - { - usrerr("cannot open %s", buf); - return (EX_NOINPUT); - } - - /* - ** Scan the SCCS directory looking for s. files. - ** gotedit tells whether we have tried to clean any - ** files that are being edited. - */ - - gotedit = FALSE; - while (dir = readdir(dirp)) { - if (strncmp(dir->d_name, "s.", 2) != 0) - continue; - - /* got an s. file -- see if the p. file exists */ - gstrcpy(bufend, "/p.", sizeof(buf)); - basefile = bufend + 3; - gstrcpy(basefile, &dir->d_name[2], sizeof(buf)); - - /* - ** open and scan the p-file. - ** 'gotpfent' tells if we have found a valid p-file - ** entry. - */ - - pfp = fopen(buf, "r"); - gotpfent = FALSE; - if (pfp != NULL) - { - /* the file exists -- report it's contents */ - while ((pf = getpfent(pfp)) != NULL) - { - if (nobranch && isbranch(pf->p_nsid)) - continue; - if (usernm != NULL && strcmp(usernm, pf->p_user) != 0 && mode != CLEANC) - continue; - gotedit = TRUE; - gotpfent = TRUE; - if (mode == TELLC) - { - printf("%s\n", basefile); - break; - } - printf("%12s: being edited: ", basefile); - putpfent(pf, stdout); - } - fclose(pfp); - } - - /* the s. file exists and no p. file exists -- unlink the g-file */ - if (mode == CLEANC && !gotpfent) - { - char unlinkbuf[FBUFSIZ]; - gstrcpy(unlinkbuf, &dir->d_name[2], sizeof(unlinkbuf)); - unlink(unlinkbuf); - } - } - - /* cleanup & report results */ - closedir(dirp); - if (!gotedit && mode == INFOC) - { - printf("Nothing being edited"); - if (nobranch) - printf(" (on trunk)"); - if (usernm == NULL) - printf("\n"); - else - printf(" by %s\n", usernm); - } - if (mode == CHECKC) - exit(gotedit); - return (EX_OK); -} - -/* -** ISBRANCH -- is the SID a branch? -** -** Parameters: -** sid -- the sid to check. -** -** Returns: -** TRUE if the sid represents a branch. -** FALSE otherwise. -** -** Side Effects: -** none. -*/ - -isbranch(sid) - char *sid; -{ - register char *p; - int dots; - - dots = 0; - for (p = sid; *p != '\0'; p++) - { - if (*p == '.') - dots++; - if (dots > 1) - return (TRUE); - } - return (FALSE); -} - -/* -** UNEDIT -- unedit a file -** -** Checks to see that the current user is actually editting -** the file and arranges that s/he is not editting it. -** -** Parameters: -** fn -- the name of the file to be unedited. -** -** Returns: -** TRUE -- if the file was successfully unedited. -** FALSE -- if the file was not unedited for some -** reason. -** -** Side Effects: -** fn is removed -** entries are removed from pfile. -*/ - -bool -unedit(fn) - char *fn; -{ - register FILE *pfp; - char *cp, *pfn; - static char tfn[] = _PATH_TMP; - FILE *tfp; - register char *q; - bool delete = FALSE; - bool others = FALSE; - char *myname; - extern char *username(); - struct pfile *pent; - extern struct pfile *getpfent(); - char buf[PFILELG]; - extern char *makefile(), *rindex(), *tail(); - - /* make "s." filename & find the trailing component */ - pfn = makefile(fn); - if (pfn == NULL) - return (FALSE); - q = rindex(pfn, '/'); - if (q == NULL) - q = &pfn[-1]; - if (q[1] != 's' || q[2] != '.') - { - usrerr("bad file name \"%s\"", fn); - return (FALSE); - } - - /* turn "s." into "p." & try to open it */ - *++q = 'p'; - - pfp = fopen(pfn, "r"); - if (pfp == NULL) - { - printf("%12s: not being edited\n", fn); - return (FALSE); - } - - /* create temp file for editing p-file */ - mktemp(tfn); - tfp = fopen(tfn, "w"); - if (tfp == NULL) - { - usrerr("cannot create \"%s\"", tfn); - exit(EX_OSERR); - } - - /* figure out who I am */ - myname = username(); - - /* - ** Copy p-file to temp file, doing deletions as needed. - */ - - while ((pent = getpfent(pfp)) != NULL) - { - if (strcmp(pent->p_user, myname) == 0) - { - /* a match */ - delete++; - } - else - { - /* output it again */ - putpfent(pent, tfp); - others++; - } - } - - /* - * Before changing anything, make sure we can remove - * the file in question (assuming it exists). - */ - if (delete) { - extern int errno; - - cp = tail(fn); - errno = 0; - if (access(cp, 0) < 0 && errno != ENOENT) - goto bad; - if (errno == 0) - /* - * This is wrong, but the rest of the program - * has built in assumptions about "." as well, - * so why make unedit a special case? - */ - if (access(".", 2) < 0) { - bad: - printf("%12s: can't remove\n", cp); - fclose(tfp); - fclose(pfp); - unlink(tfn); - return (FALSE); - } - } - /* do final cleanup */ - if (others) - { - /* copy it back (perhaps it should be linked?) */ - if (freopen(tfn, "r", tfp) == NULL) - { - syserr("cannot reopen \"%s\"", tfn); - exit(EX_OSERR); - } - if (freopen(pfn, "w", pfp) == NULL) - { - usrerr("cannot create \"%s\"", pfn); - return (FALSE); - } - while (fgets(buf, sizeof buf, tfp) != NULL) - fputs(buf, pfp); - } - else - { - /* it's empty -- remove it */ - unlink(pfn); - } - fclose(tfp); - fclose(pfp); - unlink(tfn); - - /* actually remove the g-file */ - if (delete) - { - /* - * Since we've checked above, we can - * use the return from unlink to - * determine if the file existed or not. - */ - if (unlink(cp) >= 0) - printf("%12s: removed\n", cp); - return (TRUE); - } - else - { - printf("%12s: not being edited by you\n", fn); - return (FALSE); - } -} - -/* -** DODIFF -- diff an s-file against a g-file -** -** Parameters: -** getv -- argv for the 'get' command. -** gfile -- name of the g-file to diff against. -** -** Returns: -** Result of get. -** -** Side Effects: -** none. -*/ - -dodiff(getv, gfile) - char **getv; - char *gfile; -{ - int pipev[2]; - int rval; - register int i; - register int pid; - auto int st; - extern int errno; - sig_t osig; - - printf("\n------- %s -------\n", gfile); - fflush(stdout); - - /* create context for diff to run in */ - if (pipe(pipev) < 0) - { - syserr("dodiff: pipe failed"); - exit(EX_OSERR); - } - if ((pid = fork()) < 0) - { - syserr("dodiff: fork failed"); - exit(EX_OSERR); - } - else if (pid > 0) - { - /* in parent; run get */ - OutFile = pipev[1]; - close(pipev[0]); - rval = command(&getv[1], TRUE, "get:rcixt -s -k -p"); - osig = signal(SIGINT, SIG_IGN); - while (((i = wait(&st)) >= 0 && i != pid) || errno == EINTR) - errno = 0; - signal(SIGINT, osig); - /* ignore result of diff */ - } - else - { - /* in child, run diff */ - if (close(pipev[1]) < 0 || close(0) < 0 || - dup(pipev[0]) != 0 || close(pipev[0]) < 0) - { - syserr("dodiff: magic failed"); - exit(EX_OSERR); - } - command(&getv[1], FALSE, "-diff:elsfhbC"); - } - return (rval); -} - -/* -** TAIL -- return tail of filename. -** -** Parameters: -** fn -- the filename. -** -** Returns: -** a pointer to the tail of the filename; e.g., given -** "cmd/ls.c", "ls.c" is returned. -** -** Side Effects: -** none. -*/ - -char * -tail(fn) - register char *fn; -{ - register char *p; - - for (p = fn; *p != 0; p++) - if (*p == '/' && p[1] != '\0' && p[1] != '/') - fn = &p[1]; - return (fn); -} - -/* -** GETPFENT -- get an entry from the p-file -** -** Parameters: -** pfp -- p-file file pointer -** -** Returns: -** pointer to p-file struct for next entry -** NULL on EOF or error -** -** Side Effects: -** Each call wipes out results of previous call. -*/ - -struct pfile * -getpfent(pfp) - FILE *pfp; -{ - static struct pfile ent; - static char buf[PFILELG]; - register char *p; - extern char *nextfield(); - - if (fgets(buf, sizeof buf, pfp) == NULL) - return (NULL); - - ent.p_osid = p = buf; - ent.p_nsid = p = nextfield(p); - ent.p_user = p = nextfield(p); - ent.p_date = p = nextfield(p); - ent.p_time = p = nextfield(p); - ent.p_aux = p = nextfield(p); - - return (&ent); -} - - -char * -nextfield(p) - register char *p; -{ - if (p == NULL || *p == '\0') - return (NULL); - while (*p != ' ' && *p != '\n' && *p != '\0') - p++; - if (*p == '\n' || *p == '\0') - { - *p = '\0'; - return (NULL); - } - *p++ = '\0'; - return (p); -} - /* -** PUTPFENT -- output a p-file entry to a file -** -** Parameters: -** pf -- the p-file entry -** f -- the file to put it on. -** -** Returns: -** none. -** -** Side Effects: -** pf is written onto file f. -*/ - -putpfent(pf, f) - register struct pfile *pf; - register FILE *f; -{ - fprintf(f, "%s %s %s %s %s", pf->p_osid, pf->p_nsid, - pf->p_user, pf->p_date, pf->p_time); - if (pf->p_aux != NULL) - fprintf(f, " %s", pf->p_aux); - else - fprintf(f, "\n"); -} - -/* -** USRERR -- issue user-level error -** -** Parameters: -** f -- format string. -** p1-p3 -- parameters to a printf. -** -** Returns: -** -1 -** -** Side Effects: -** none. -*/ - -/*VARARGS1*/ -usrerr(f, p1, p2, p3) - char *f; -{ - fprintf(stderr, "\n%s: ", MyName); - fprintf(stderr, f, p1, p2, p3); - fprintf(stderr, "\n"); - - return (-1); -} - -/* -** SYSERR -- print system-generated error. -** -** Parameters: -** f -- format string to a printf. -** p1, p2, p3 -- parameters to f. -** -** Returns: -** never. -** -** Side Effects: -** none. -*/ - -/*VARARGS1*/ -syserr(f, p1, p2, p3) - char *f; -{ - extern int errno; - - fprintf(stderr, "\n%s SYSERR: ", MyName); - fprintf(stderr, f, p1, p2, p3); - fprintf(stderr, "\n"); - if (errno == 0) - exit(EX_SOFTWARE); - else - { - perror(NULL); - exit(EX_OSERR); - } -} - /* -** USERNAME -- return name of the current user -** -** Parameters: -** none -** -** Returns: -** name of current user -** -** Side Effects: -** none -*/ - -char * -username() -{ -# ifdef UIDUSER - extern struct passwd *getpwuid(); - register struct passwd *pw; - - pw = getpwuid(getuid()); - if (pw == NULL) - { - syserr("who are you? (uid=%d)", getuid()); - exit(EX_OSERR); - } - return (pw->pw_name); -# else - extern char *getlogin(); - register char *p; - - p = getenv("USER"); - if (p == NULL || p[0] == '\0') - p = getlogin(); - return (p); -# endif UIDUSER -} - -/* -** Guarded string manipulation routines; the last argument -** is the length of the buffer into which the strcpy or strcat -** is to be done. -*/ -char *gstrcat(to, from, length) - char *to, *from; - int length; -{ - if (strlen(from) + strlen(to) >= length) { - gstrbotch(to, from); - } - return(strcat(to, from)); -} - -char *gstrncat(to, from, n, length) - char *to, *from; - int n; - int length; -{ - if (n + strlen(to) >= length) { - gstrbotch(to, from); - } - return(strncat(to, from, n)); -} - -char *gstrcpy(to, from, length) - char *to, *from; - int length; -{ - if (strlen(from) >= length) { - gstrbotch(from, (char *)0); - } - return(strcpy(to, from)); -} -gstrbotch(str1, str2) - char *str1, *str2; -{ - usrerr("Filename(s) too long: %s %s", str1, str2); -} |
