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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)sccs.c 5.11 (Berkeley) 3/4/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/cdefs.h> | |
45 | #include <sys/param.h> | |
46 | #include <sys/stat.h> | |
47 | #include <sys/dir.h> | |
48 | #include <signal.h> | |
49 | #include <sysexits.h> | |
50 | #include <errno.h> | |
51 | #include <pwd.h> | |
52 | #include <stdio.h> | |
53 | #include "pathnames.h" | |
54 | ||
55 | /* | |
56 | ** SCCS.C -- human-oriented front end to the SCCS system. | |
57 | ** | |
58 | ** Without trying to add any functionality to speak of, this | |
59 | ** program tries to make SCCS a little more accessible to human | |
60 | ** types. The main thing it does is automatically put the | |
61 | ** string "SCCS/s." on the front of names. Also, it has a | |
62 | ** couple of things that are designed to shorten frequent | |
63 | ** combinations, e.g., "delget" which expands to a "delta" | |
64 | ** and a "get". | |
65 | ** | |
66 | ** This program can also function as a setuid front end. | |
67 | ** To do this, you should copy the source, renaming it to | |
68 | ** whatever you want, e.g., "syssccs". Change any defaults | |
69 | ** in the program (e.g., syssccs might default -d to | |
70 | ** "/usr/src/sys"). Then recompile and put the result | |
71 | ** as setuid to whomever you want. In this mode, sccs | |
72 | ** knows to not run setuid for certain programs in order | |
73 | ** to preserve security, and so forth. | |
74 | ** | |
75 | ** Usage: | |
76 | ** sccs [flags] command [args] | |
77 | ** | |
78 | ** Flags: | |
79 | ** -d<dir> <dir> represents a directory to search | |
80 | ** out of. It should be a full pathname | |
81 | ** for general usage. E.g., if <dir> is | |
82 | ** "/usr/src/sys", then a reference to the | |
83 | ** file "dev/bio.c" becomes a reference to | |
84 | ** "/usr/src/sys/dev/bio.c". | |
85 | ** -p<path> prepends <path> to the final component | |
86 | ** of the pathname. By default, this is | |
87 | ** "SCCS". For example, in the -d example | |
88 | ** above, the path then gets modified to | |
89 | ** "/usr/src/sys/dev/SCCS/s.bio.c". In | |
90 | ** more common usage (without the -d flag), | |
91 | ** "prog.c" would get modified to | |
92 | ** "SCCS/s.prog.c". In both cases, the | |
93 | ** "s." gets automatically prepended. | |
94 | ** -r run as the real user. | |
95 | ** | |
96 | ** Commands: | |
97 | ** admin, | |
98 | ** get, | |
99 | ** delta, | |
100 | ** rmdel, | |
101 | ** cdc, | |
102 | ** etc. Straight out of SCCS; only difference | |
103 | ** is that pathnames get modified as | |
104 | ** described above. | |
105 | ** enter Front end doing "sccs admin -i<name> <name>" | |
106 | ** create Macro for "enter" followed by "get". | |
107 | ** edit Macro for "get -e". | |
108 | ** unedit Removes a file being edited, knowing | |
109 | ** about p-files, etc. | |
110 | ** delget Macro for "delta" followed by "get". | |
111 | ** deledit Macro for "delta" followed by "get -e". | |
112 | ** branch Macro for "get -b -e", followed by "delta | |
113 | ** -s -n", followd by "get -e -t -g". | |
114 | ** diffs "diff" the specified version of files | |
115 | ** and the checked-out version. | |
116 | ** print Macro for "prs -e" followed by "get -p -m". | |
117 | ** tell List what files are being edited. | |
118 | ** info Print information about files being edited. | |
119 | ** clean Remove all files that can be | |
120 | ** regenerated from SCCS files. | |
121 | ** check Like info, but return exit status, for | |
122 | ** use in makefiles. | |
123 | ** fix Remove a top delta & reedit, but save | |
124 | ** the previous changes in that delta. | |
125 | ** | |
126 | ** Compilation Flags: | |
127 | ** UIDUSER -- determine who the user is by looking at the | |
128 | ** uid rather than the login name -- for machines | |
129 | ** where SCCS gets the user in this way. | |
130 | ** SCCSDIR -- if defined, forces the -d flag to take on | |
131 | ** this value. This is so that the setuid | |
132 | ** aspects of this program cannot be abused. | |
133 | ** This flag also disables the -p flag. | |
134 | ** SCCSPATH -- the default for the -p flag. | |
135 | ** MYNAME -- the title this program should print when it | |
136 | ** gives error messages. | |
137 | ** | |
138 | ** Compilation Instructions: | |
139 | ** cc -O -n -s sccs.c | |
140 | ** The flags listed above can be -D defined to simplify | |
141 | ** recompilation for variant versions. | |
142 | ** | |
143 | ** Author: | |
144 | ** Eric Allman, UCB/INGRES | |
145 | ** Copyright 1980 Regents of the University of California | |
146 | */ | |
147 | ||
148 | \f | |
149 | /******************* Configuration Information ********************/ | |
150 | ||
151 | # ifndef SCCSPATH | |
152 | # define SCCSPATH "SCCS" /* pathname in which to find s-files */ | |
153 | # endif NOT SCCSPATH | |
154 | ||
155 | # ifndef MYNAME | |
156 | # define MYNAME "sccs" /* name used for printing errors */ | |
157 | # endif NOT MYNAME | |
158 | ||
159 | /**************** End of Configuration Information ****************/ | |
160 | \f | |
161 | typedef char bool; | |
162 | # define TRUE 1 | |
163 | # define FALSE 0 | |
164 | ||
165 | # define bitset(bit, word) ((bool) ((bit) & (word))) | |
166 | ||
167 | struct sccsprog | |
168 | { | |
169 | char *sccsname; /* name of SCCS routine */ | |
170 | short sccsoper; /* opcode, see below */ | |
171 | short sccsflags; /* flags, see below */ | |
172 | char *sccspath; /* pathname of binary implementing */ | |
173 | }; | |
174 | ||
175 | /* values for sccsoper */ | |
176 | # define PROG 0 /* call a program */ | |
177 | # define CMACRO 1 /* command substitution macro */ | |
178 | # define FIX 2 /* fix a delta */ | |
179 | # define CLEAN 3 /* clean out recreatable files */ | |
180 | # define UNEDIT 4 /* unedit a file */ | |
181 | # define SHELL 5 /* call a shell file (like PROG) */ | |
182 | # define DIFFS 6 /* diff between sccs & file out */ | |
183 | # define DODIFF 7 /* internal call to diff program */ | |
184 | # define ENTER 8 /* enter new files */ | |
185 | ||
186 | /* bits for sccsflags */ | |
187 | # define NO_SDOT 0001 /* no s. on front of args */ | |
188 | # define REALUSER 0002 /* protected (e.g., admin) */ | |
189 | ||
190 | /* modes for the "clean", "info", "check" ops */ | |
191 | # define CLEANC 0 /* clean command */ | |
192 | # define INFOC 1 /* info command */ | |
193 | # define CHECKC 2 /* check command */ | |
194 | # define TELLC 3 /* give list of files being edited */ | |
195 | ||
196 | /* | |
197 | ** Description of commands known to this program. | |
198 | ** First argument puts the command into a class. Second arg is | |
199 | ** info regarding treatment of this command. Third arg is a | |
200 | ** list of flags this command accepts from macros, etc. Fourth | |
201 | ** arg is the pathname of the implementing program, or the | |
202 | ** macro definition, or the arg to a sub-algorithm. | |
203 | */ | |
204 | ||
205 | struct sccsprog SccsProg[] = { | |
206 | "admin", PROG, REALUSER, _PATH_SCCSADMIN, | |
207 | "cdc", PROG, 0, _PATH_SCCSRMDEL, | |
208 | "comb", PROG, 0, _PATH_SCCSCOMB, | |
209 | "delta", PROG, 0, _PATH_SCCSDELTA, | |
210 | "get", PROG, 0, _PATH_SCCSGET, | |
211 | "help", PROG, NO_SDOT, _PATH_SCCSHELP, | |
212 | "prs", PROG, 0, _PATH_SCCSPRS, | |
213 | "prt", PROG, 0, _PATH_SCCSPRT, | |
214 | "rmdel", PROG, REALUSER, _PATH_SCCSRMDEL, | |
215 | "val", PROG, 0, _PATH_SCCSVAL, | |
216 | "what", PROG, NO_SDOT, _PATH_SCCSWHAT, | |
217 | "sccsdiff", SHELL, REALUSER, _PATH_SCCSDIFF, | |
218 | "edit", CMACRO, NO_SDOT, "get -e", | |
219 | "delget", CMACRO, NO_SDOT, "delta:mysrp/get:ixbeskcl -t", | |
220 | "deledit", CMACRO, NO_SDOT, | |
221 | "delta:mysrp -n/get:ixbskcl -e -t -g", | |
222 | "fix", FIX, NO_SDOT, NULL, | |
223 | "clean", CLEAN, REALUSER|NO_SDOT, | |
224 | (char *) CLEANC, | |
225 | "info", CLEAN, REALUSER|NO_SDOT, | |
226 | (char *) INFOC, | |
227 | "check", CLEAN, REALUSER|NO_SDOT, | |
228 | (char *) CHECKC, | |
229 | "tell", CLEAN, REALUSER|NO_SDOT, | |
230 | (char *) TELLC, | |
231 | "unedit", UNEDIT, NO_SDOT, NULL, | |
232 | "diffs", DIFFS, NO_SDOT|REALUSER, | |
233 | NULL, | |
234 | "-diff", DODIFF, NO_SDOT|REALUSER, | |
235 | _PATH_SCCSBDIFF, | |
236 | "print", CMACRO, 0, "prs -e/get -p -m -s", | |
237 | "branch", CMACRO, NO_SDOT, | |
238 | "get:ixrc -e -b/delta: -s -n -ybranch-place-holder/get:pl -e -t -g", | |
239 | "enter", ENTER, NO_SDOT, NULL, | |
240 | "create", CMACRO, NO_SDOT, "enter/get:ixbeskcl -t", | |
241 | NULL, -1, 0, NULL | |
242 | }; | |
243 | ||
244 | /* one line from a p-file */ | |
245 | struct pfile | |
246 | { | |
247 | char *p_osid; /* old SID */ | |
248 | char *p_nsid; /* new SID */ | |
249 | char *p_user; /* user who did edit */ | |
250 | char *p_date; /* date of get */ | |
251 | char *p_time; /* time of get */ | |
252 | char *p_aux; /* extra info at end */ | |
253 | }; | |
254 | ||
255 | char *SccsPath = SCCSPATH; /* pathname of SCCS files */ | |
256 | # ifdef SCCSDIR | |
257 | char *SccsDir = SCCSDIR; /* directory to begin search from */ | |
258 | # else | |
259 | char *SccsDir = ""; | |
260 | # endif | |
261 | char MyName[] = MYNAME; /* name used in messages */ | |
262 | int OutFile = -1; /* override output file for commands */ | |
263 | bool RealUser; /* if set, running as real user */ | |
264 | # ifdef DEBUG | |
265 | bool Debug; /* turn on tracing */ | |
266 | # endif | |
267 | # ifndef V6 | |
268 | extern char *getenv(); | |
269 | # endif V6 | |
270 | ||
271 | extern char *sys_siglist[]; | |
272 | ||
273 | char *gstrcat(), *strcat(); | |
274 | char *gstrncat(), *strncat(); | |
275 | char *gstrcpy(), *strcpy(); | |
276 | #define FBUFSIZ BUFSIZ | |
277 | #define PFILELG 120 | |
278 | \f | |
279 | main(argc, argv) | |
280 | int argc; | |
281 | char **argv; | |
282 | { | |
283 | register char *p; | |
284 | extern struct sccsprog *lookup(); | |
285 | register int i; | |
286 | # ifndef V6 | |
287 | # ifndef SCCSDIR | |
288 | register struct passwd *pw; | |
289 | extern struct passwd *getpwnam(); | |
290 | char buf[FBUFSIZ]; | |
291 | ||
292 | /* pull "SccsDir" out of the environment (possibly) */ | |
293 | p = getenv("PROJECTDIR"); | |
294 | if (p != NULL && p[0] != '\0') | |
295 | { | |
296 | if (p[0] == '/') | |
297 | SccsDir = p; | |
298 | else | |
299 | { | |
300 | pw = getpwnam(p); | |
301 | if (pw == NULL) | |
302 | { | |
303 | usrerr("user %s does not exist", p); | |
304 | exit(EX_USAGE); | |
305 | } | |
306 | gstrcpy(buf, pw->pw_dir, sizeof(buf)); | |
307 | gstrcat(buf, "/src", sizeof(buf)); | |
308 | if (access(buf, 0) < 0) | |
309 | { | |
310 | gstrcpy(buf, pw->pw_dir, sizeof(buf)); | |
311 | gstrcat(buf, "/source", sizeof(buf)); | |
312 | if (access(buf, 0) < 0) | |
313 | { | |
314 | usrerr("project %s has no source!", p); | |
315 | exit(EX_USAGE); | |
316 | } | |
317 | } | |
318 | SccsDir = buf; | |
319 | } | |
320 | } | |
321 | # endif SCCSDIR | |
322 | # endif V6 | |
323 | ||
324 | /* | |
325 | ** Detect and decode flags intended for this program. | |
326 | */ | |
327 | ||
328 | if (argc < 2) | |
329 | { | |
330 | fprintf(stderr, "Usage: %s [flags] command [flags]\n", MyName); | |
331 | exit(EX_USAGE); | |
332 | } | |
333 | argv[argc] = NULL; | |
334 | ||
335 | if (lookup(argv[0]) == NULL) | |
336 | { | |
337 | while ((p = *++argv) != NULL) | |
338 | { | |
339 | if (*p != '-') | |
340 | break; | |
341 | switch (*++p) | |
342 | { | |
343 | case 'r': /* run as real user */ | |
344 | setuid(getuid()); | |
345 | RealUser++; | |
346 | break; | |
347 | ||
348 | # ifndef SCCSDIR | |
349 | case 'p': /* path of sccs files */ | |
350 | SccsPath = ++p; | |
351 | if (SccsPath[0] == '\0' && argv[1] != NULL) | |
352 | SccsPath = *++argv; | |
353 | break; | |
354 | ||
355 | case 'd': /* directory to search from */ | |
356 | SccsDir = ++p; | |
357 | if (SccsDir[0] == '\0' && argv[1] != NULL) | |
358 | SccsDir = *++argv; | |
359 | break; | |
360 | # endif | |
361 | ||
362 | # ifdef DEBUG | |
363 | case 'T': /* trace */ | |
364 | Debug++; | |
365 | break; | |
366 | # endif | |
367 | ||
368 | default: | |
369 | usrerr("unknown option -%s", p); | |
370 | break; | |
371 | } | |
372 | } | |
373 | if (SccsPath[0] == '\0') | |
374 | SccsPath = "."; | |
375 | } | |
376 | ||
377 | i = command(argv, FALSE, ""); | |
378 | exit(i); | |
379 | } | |
380 | \f | |
381 | /* | |
382 | ** COMMAND -- look up and perform a command | |
383 | ** | |
384 | ** This routine is the guts of this program. Given an | |
385 | ** argument vector, it looks up the "command" (argv[0]) | |
386 | ** in the configuration table and does the necessary stuff. | |
387 | ** | |
388 | ** Parameters: | |
389 | ** argv -- an argument vector to process. | |
390 | ** forkflag -- if set, fork before executing the command. | |
391 | ** editflag -- if set, only include flags listed in the | |
392 | ** sccsklets field of the command descriptor. | |
393 | ** arg0 -- a space-seperated list of arguments to insert | |
394 | ** before argv. | |
395 | ** | |
396 | ** Returns: | |
397 | ** zero -- command executed ok. | |
398 | ** else -- error status. | |
399 | ** | |
400 | ** Side Effects: | |
401 | ** none. | |
402 | */ | |
403 | ||
404 | command(argv, forkflag, arg0) | |
405 | char **argv; | |
406 | bool forkflag; | |
407 | char *arg0; | |
408 | { | |
409 | register struct sccsprog *cmd; | |
410 | register char *p; | |
411 | char buf[FBUFSIZ]; | |
412 | extern struct sccsprog *lookup(); | |
413 | char *nav[1000]; | |
414 | char **np; | |
415 | register char **ap; | |
416 | register int i; | |
417 | register char *q; | |
418 | extern bool unedit(); | |
419 | int rval = 0; | |
420 | extern char *index(); | |
421 | extern char *makefile(); | |
422 | char *editchs; | |
423 | extern char *tail(); | |
424 | ||
425 | # ifdef DEBUG | |
426 | if (Debug) | |
427 | { | |
428 | printf("command:\n\t\"%s\"\n", arg0); | |
429 | for (np = argv; *np != NULL; np++) | |
430 | printf("\t\"%s\"\n", *np); | |
431 | } | |
432 | # endif | |
433 | ||
434 | /* | |
435 | ** Copy arguments. | |
436 | ** Copy from arg0 & if necessary at most one arg | |
437 | ** from argv[0]. | |
438 | */ | |
439 | ||
440 | np = ap = &nav[1]; | |
441 | editchs = NULL; | |
442 | for (p = arg0, q = buf; *p != '\0' && *p != '/'; ) | |
443 | { | |
444 | *np++ = q; | |
445 | while (*p == ' ') | |
446 | p++; | |
447 | while (*p != ' ' && *p != '\0' && *p != '/' && *p != ':') | |
448 | *q++ = *p++; | |
449 | *q++ = '\0'; | |
450 | if (*p == ':') | |
451 | { | |
452 | editchs = q; | |
453 | while (*++p != '\0' && *p != '/' && *p != ' ') | |
454 | *q++ = *p; | |
455 | *q++ = '\0'; | |
456 | } | |
457 | } | |
458 | *np = NULL; | |
459 | if (*ap == NULL) | |
460 | *np++ = *argv++; | |
461 | ||
462 | /* | |
463 | ** Look up command. | |
464 | ** At this point, *ap is the command name. | |
465 | */ | |
466 | ||
467 | cmd = lookup(*ap); | |
468 | if (cmd == NULL) | |
469 | { | |
470 | usrerr("Unknown command \"%s\"", *ap); | |
471 | return (EX_USAGE); | |
472 | } | |
473 | ||
474 | /* | |
475 | ** Copy remaining arguments doing editing as appropriate. | |
476 | */ | |
477 | ||
478 | for (; *argv != NULL; argv++) | |
479 | { | |
480 | p = *argv; | |
481 | if (*p == '-') | |
482 | { | |
483 | if (p[1] == '\0' || editchs == NULL || index(editchs, p[1]) != NULL) | |
484 | *np++ = p; | |
485 | } | |
486 | else | |
487 | { | |
488 | if (!bitset(NO_SDOT, cmd->sccsflags)) | |
489 | p = makefile(p); | |
490 | if (p != NULL) | |
491 | *np++ = p; | |
492 | } | |
493 | } | |
494 | *np = NULL; | |
495 | ||
496 | /* | |
497 | ** Interpret operation associated with this command. | |
498 | */ | |
499 | ||
500 | switch (cmd->sccsoper) | |
501 | { | |
502 | case SHELL: /* call a shell file */ | |
503 | *ap = cmd->sccspath; | |
504 | *--ap = "sh"; | |
505 | rval = callprog(_PATH_BSHELL, cmd->sccsflags, ap, forkflag); | |
506 | break; | |
507 | ||
508 | case PROG: /* call an sccs prog */ | |
509 | rval = callprog(cmd->sccspath, cmd->sccsflags, ap, forkflag); | |
510 | break; | |
511 | ||
512 | case CMACRO: /* command macro */ | |
513 | /* step through & execute each part of the macro */ | |
514 | for (p = cmd->sccspath; *p != '\0'; p++) | |
515 | { | |
516 | q = p; | |
517 | while (*p != '\0' && *p != '/') | |
518 | p++; | |
519 | rval = command(&ap[1], *p != '\0', q); | |
520 | if (rval != 0) | |
521 | break; | |
522 | } | |
523 | break; | |
524 | ||
525 | case FIX: /* fix a delta */ | |
526 | if (ap[1]==0 || strncmp(ap[1], "-r", 2)!=0) | |
527 | { | |
528 | usrerr("-r flag needed for fix command"); | |
529 | rval = EX_USAGE; | |
530 | break; | |
531 | } | |
532 | ||
533 | /* get the version with all changes */ | |
534 | rval = command(&ap[1], TRUE, "get -k"); | |
535 | ||
536 | /* now remove that version from the s-file */ | |
537 | if (rval == 0) | |
538 | rval = command(&ap[1], TRUE, "rmdel:r"); | |
539 | ||
540 | /* and edit the old version (but don't clobber new vers) */ | |
541 | if (rval == 0) | |
542 | rval = command(&ap[2], FALSE, "get -e -g"); | |
543 | break; | |
544 | ||
545 | case CLEAN: | |
546 | rval = clean((int) cmd->sccspath, ap); | |
547 | break; | |
548 | ||
549 | case UNEDIT: | |
550 | for (argv = np = &ap[1]; *argv != NULL; argv++) | |
551 | { | |
552 | if (unedit(*argv)) | |
553 | *np++ = *argv; | |
554 | } | |
555 | *np = NULL; | |
556 | ||
557 | /* get all the files that we unedited successfully */ | |
558 | if (np > &ap[1]) | |
559 | rval = command(&ap[1], FALSE, "get"); | |
560 | break; | |
561 | ||
562 | case DIFFS: /* diff between s-file & edit file */ | |
563 | /* find the end of the flag arguments */ | |
564 | for (np = &ap[1]; *np != NULL && **np == '-'; np++) | |
565 | continue; | |
566 | argv = np; | |
567 | ||
568 | /* for each file, do the diff */ | |
569 | p = argv[1]; | |
570 | while (*np != NULL) | |
571 | { | |
572 | /* messy, but we need a null terminated argv */ | |
573 | *argv = *np++; | |
574 | argv[1] = NULL; | |
575 | i = dodiff(ap, tail(*argv)); | |
576 | if (rval == 0) | |
577 | rval = i; | |
578 | argv[1] = p; | |
579 | } | |
580 | break; | |
581 | ||
582 | case DODIFF: /* internal diff call */ | |
583 | setuid(getuid()); | |
584 | for (np = ap; *np != NULL; np++) | |
585 | { | |
586 | if ((*np)[0] == '-' && (*np)[1] == 'C') | |
587 | (*np)[1] = 'c'; | |
588 | } | |
589 | ||
590 | /* insert "-" argument */ | |
591 | np[1] = NULL; | |
592 | np[0] = np[-1]; | |
593 | np[-1] = "-"; | |
594 | ||
595 | /* execute the diff program of choice */ | |
596 | # ifndef V6 | |
597 | execvp("diff", ap); | |
598 | # endif | |
599 | execv(cmd->sccspath, argv); | |
600 | syserr("cannot exec %s", cmd->sccspath); | |
601 | exit(EX_OSERR); | |
602 | ||
603 | case ENTER: /* enter new sccs files */ | |
604 | /* skip over flag arguments */ | |
605 | for (np = &ap[1]; *np != NULL && **np == '-'; np++) | |
606 | continue; | |
607 | argv = np; | |
608 | ||
609 | /* do an admin for each file */ | |
610 | p = argv[1]; | |
611 | while (*np != NULL) | |
612 | { | |
613 | printf("\n%s:\n", *np); | |
614 | strcpy(buf, "-i"); | |
615 | gstrcat(buf, *np, sizeof(buf)); | |
616 | ap[0] = buf; | |
617 | argv[0] = tail(*np); | |
618 | argv[1] = NULL; | |
619 | rval = command(ap, TRUE, "admin"); | |
620 | argv[1] = p; | |
621 | if (rval == 0) | |
622 | { | |
623 | strcpy(buf, ","); | |
624 | gstrcat(buf, tail(*np), sizeof(buf)); | |
625 | if (link(*np, buf) >= 0) | |
626 | unlink(*np); | |
627 | } | |
628 | np++; | |
629 | } | |
630 | break; | |
631 | ||
632 | default: | |
633 | syserr("oper %d", cmd->sccsoper); | |
634 | exit(EX_SOFTWARE); | |
635 | } | |
636 | # ifdef DEBUG | |
637 | if (Debug) | |
638 | printf("command: rval=%d\n", rval); | |
639 | # endif | |
640 | return (rval); | |
641 | } | |
642 | \f | |
643 | /* | |
644 | ** LOOKUP -- look up an SCCS command name. | |
645 | ** | |
646 | ** Parameters: | |
647 | ** name -- the name of the command to look up. | |
648 | ** | |
649 | ** Returns: | |
650 | ** ptr to command descriptor for this command. | |
651 | ** NULL if no such entry. | |
652 | ** | |
653 | ** Side Effects: | |
654 | ** none. | |
655 | */ | |
656 | ||
657 | struct sccsprog * | |
658 | lookup(name) | |
659 | char *name; | |
660 | { | |
661 | register struct sccsprog *cmd; | |
662 | ||
663 | for (cmd = SccsProg; cmd->sccsname != NULL; cmd++) | |
664 | { | |
665 | if (strcmp(cmd->sccsname, name) == 0) | |
666 | return (cmd); | |
667 | } | |
668 | return (NULL); | |
669 | } | |
670 | \f | |
671 | /* | |
672 | ** CALLPROG -- call a program | |
673 | ** | |
674 | ** Used to call the SCCS programs. | |
675 | ** | |
676 | ** Parameters: | |
677 | ** progpath -- pathname of the program to call. | |
678 | ** flags -- status flags from the command descriptors. | |
679 | ** argv -- an argument vector to pass to the program. | |
680 | ** forkflag -- if true, fork before calling, else just | |
681 | ** exec. | |
682 | ** | |
683 | ** Returns: | |
684 | ** The exit status of the program. | |
685 | ** Nothing if forkflag == FALSE. | |
686 | ** | |
687 | ** Side Effects: | |
688 | ** Can exit if forkflag == FALSE. | |
689 | */ | |
690 | ||
691 | callprog(progpath, flags, argv, forkflag) | |
692 | char *progpath; | |
693 | short flags; | |
694 | char **argv; | |
695 | bool forkflag; | |
696 | { | |
697 | register int i; | |
698 | register int wpid; | |
699 | auto int st; | |
700 | register int sigcode; | |
701 | register int coredumped; | |
702 | register char *sigmsg; | |
703 | auto char sigmsgbuf[10+1]; /* "Signal 127" + terminating '\0' */ | |
704 | ||
705 | # ifdef DEBUG | |
706 | if (Debug) | |
707 | { | |
708 | printf("callprog:\n"); | |
709 | for (i = 0; argv[i] != NULL; i++) | |
710 | printf("\t\"%s\"\n", argv[i]); | |
711 | } | |
712 | # endif | |
713 | ||
714 | if (*argv == NULL) | |
715 | return (-1); | |
716 | ||
717 | /* | |
718 | ** Fork if appropriate. | |
719 | */ | |
720 | ||
721 | if (forkflag) | |
722 | { | |
723 | # ifdef DEBUG | |
724 | if (Debug) | |
725 | printf("Forking\n"); | |
726 | # endif | |
727 | i = fork(); | |
728 | if (i < 0) | |
729 | { | |
730 | syserr("cannot fork"); | |
731 | exit(EX_OSERR); | |
732 | } | |
733 | else if (i > 0) | |
734 | { | |
735 | while ((wpid = wait(&st)) != -1 && wpid != i) | |
736 | ; | |
737 | if ((sigcode = st & 0377) == 0) | |
738 | st = (st >> 8) & 0377; | |
739 | else | |
740 | { | |
741 | coredumped = sigcode & 0200; | |
742 | sigcode &= 0177; | |
743 | if (sigcode != SIGINT && sigcode != SIGPIPE) | |
744 | { | |
745 | if (sigcode < NSIG) | |
746 | sigmsg = sys_siglist[sigcode]; | |
747 | else | |
748 | { | |
749 | sprintf(sigmsgbuf, "Signal %d", | |
750 | sigcode); | |
751 | sigmsg = sigmsgbuf; | |
752 | } | |
753 | fprintf(stderr, "sccs: %s: %s%s", argv[0], | |
754 | sigmsg, | |
755 | coredumped ? " - core dumped": ""); | |
756 | } | |
757 | st = EX_SOFTWARE; | |
758 | } | |
759 | if (OutFile >= 0) | |
760 | { | |
761 | close(OutFile); | |
762 | OutFile = -1; | |
763 | } | |
764 | return (st); | |
765 | } | |
766 | } | |
767 | else if (OutFile >= 0) | |
768 | { | |
769 | syserr("callprog: setting stdout w/o forking"); | |
770 | exit(EX_SOFTWARE); | |
771 | } | |
772 | ||
773 | /* set protection as appropriate */ | |
774 | if (bitset(REALUSER, flags)) | |
775 | setuid(getuid()); | |
776 | ||
777 | /* change standard input & output if needed */ | |
778 | if (OutFile >= 0) | |
779 | { | |
780 | close(1); | |
781 | dup(OutFile); | |
782 | close(OutFile); | |
783 | } | |
784 | ||
785 | /* call real SCCS program */ | |
786 | execv(progpath, argv); | |
787 | syserr("cannot execute %s", progpath); | |
788 | exit(EX_UNAVAILABLE); | |
789 | /*NOTREACHED*/ | |
790 | } | |
791 | \f | |
792 | /* | |
793 | ** MAKEFILE -- make filename of SCCS file | |
794 | ** | |
795 | ** If the name passed is already the name of an SCCS file, | |
796 | ** just return it. Otherwise, munge the name into the name | |
797 | ** of the actual SCCS file. | |
798 | ** | |
799 | ** There are cases when it is not clear what you want to | |
800 | ** do. For example, if SccsPath is an absolute pathname | |
801 | ** and the name given is also an absolute pathname, we go | |
802 | ** for SccsPath (& only use the last component of the name | |
803 | ** passed) -- this is important for security reasons (if | |
804 | ** sccs is being used as a setuid front end), but not | |
805 | ** particularly intuitive. | |
806 | ** | |
807 | ** Parameters: | |
808 | ** name -- the file name to be munged. | |
809 | ** | |
810 | ** Returns: | |
811 | ** The pathname of the sccs file. | |
812 | ** NULL on error. | |
813 | ** | |
814 | ** Side Effects: | |
815 | ** none. | |
816 | */ | |
817 | ||
818 | char * | |
819 | makefile(name) | |
820 | char *name; | |
821 | { | |
822 | register char *p; | |
823 | char buf[3*FBUFSIZ]; | |
824 | extern char *malloc(); | |
825 | extern char *rindex(); | |
826 | extern bool safepath(); | |
827 | extern bool isdir(); | |
828 | register char *q; | |
829 | ||
830 | p = rindex(name, '/'); | |
831 | if (p == NULL) | |
832 | p = name; | |
833 | else | |
834 | p++; | |
835 | ||
836 | /* | |
837 | ** Check to see that the path is "safe", i.e., that we | |
838 | ** are not letting some nasty person use the setuid part | |
839 | ** of this program to look at or munge some presumably | |
840 | ** hidden files. | |
841 | */ | |
842 | ||
843 | if (SccsDir[0] == '/' && !safepath(name)) | |
844 | return (NULL); | |
845 | ||
846 | /* | |
847 | ** Create the base pathname. | |
848 | */ | |
849 | ||
850 | /* first the directory part */ | |
851 | if (SccsDir[0] != '\0' && name[0] != '/' && strncmp(name, "./", 2) != 0) | |
852 | { | |
853 | gstrcpy(buf, SccsDir, sizeof(buf)); | |
854 | gstrcat(buf, "/", sizeof(buf)); | |
855 | } | |
856 | else | |
857 | gstrcpy(buf, "", sizeof(buf)); | |
858 | ||
859 | /* then the head of the pathname */ | |
860 | gstrncat(buf, name, p - name, sizeof(buf)); | |
861 | q = &buf[strlen(buf)]; | |
862 | ||
863 | /* now copy the final part of the name, in case useful */ | |
864 | gstrcpy(q, p, sizeof(buf)); | |
865 | ||
866 | /* so is it useful? */ | |
867 | if (strncmp(p, "s.", 2) != 0 && !isdir(buf)) | |
868 | { | |
869 | /* sorry, no; copy the SCCS pathname & the "s." */ | |
870 | gstrcpy(q, SccsPath, sizeof(buf)); | |
871 | gstrcat(buf, "/s.", sizeof(buf)); | |
872 | ||
873 | /* and now the end of the name */ | |
874 | gstrcat(buf, p, sizeof(buf)); | |
875 | } | |
876 | ||
877 | /* if i haven't changed it, why did I do all this? */ | |
878 | if (strcmp(buf, name) == 0) | |
879 | p = name; | |
880 | else | |
881 | { | |
882 | /* but if I have, squirrel it away */ | |
883 | p = malloc(strlen(buf) + 1); | |
884 | if (p == NULL) | |
885 | { | |
886 | perror("Sccs: no mem"); | |
887 | exit(EX_OSERR); | |
888 | } | |
889 | strcpy(p, buf); | |
890 | } | |
891 | ||
892 | return (p); | |
893 | } | |
894 | \f | |
895 | /* | |
896 | ** ISDIR -- return true if the argument is a directory. | |
897 | ** | |
898 | ** Parameters: | |
899 | ** name -- the pathname of the file to check. | |
900 | ** | |
901 | ** Returns: | |
902 | ** TRUE if 'name' is a directory, FALSE otherwise. | |
903 | ** | |
904 | ** Side Effects: | |
905 | ** none. | |
906 | */ | |
907 | ||
908 | bool | |
909 | isdir(name) | |
910 | char *name; | |
911 | { | |
912 | struct stat stbuf; | |
913 | ||
914 | return (stat(name, &stbuf) >= 0 && (stbuf.st_mode & S_IFMT) == S_IFDIR); | |
915 | } | |
916 | \f | |
917 | /* | |
918 | ** SAFEPATH -- determine whether a pathname is "safe" | |
919 | ** | |
920 | ** "Safe" pathnames only allow you to get deeper into the | |
921 | ** directory structure, i.e., full pathnames and ".." are | |
922 | ** not allowed. | |
923 | ** | |
924 | ** Parameters: | |
925 | ** p -- the name to check. | |
926 | ** | |
927 | ** Returns: | |
928 | ** TRUE -- if the path is safe. | |
929 | ** FALSE -- if the path is not safe. | |
930 | ** | |
931 | ** Side Effects: | |
932 | ** Prints a message if the path is not safe. | |
933 | */ | |
934 | ||
935 | bool | |
936 | safepath(p) | |
937 | register char *p; | |
938 | { | |
939 | extern char *index(); | |
940 | ||
941 | if (*p != '/') | |
942 | { | |
943 | while (strncmp(p, "../", 3) != 0 && strcmp(p, "..") != 0) | |
944 | { | |
945 | p = index(p, '/'); | |
946 | if (p == NULL) | |
947 | return (TRUE); | |
948 | p++; | |
949 | } | |
950 | } | |
951 | ||
952 | printf("You may not use full pathnames or \"..\"\n"); | |
953 | return (FALSE); | |
954 | } | |
955 | \f | |
956 | /* | |
957 | ** CLEAN -- clean out recreatable files | |
958 | ** | |
959 | ** Any file for which an "s." file exists but no "p." file | |
960 | ** exists in the current directory is purged. | |
961 | ** | |
962 | ** Parameters: | |
963 | ** mode -- tells whether this came from a "clean", "info", or | |
964 | ** "check" command. | |
965 | ** argv -- the rest of the argument vector. | |
966 | ** | |
967 | ** Returns: | |
968 | ** none. | |
969 | ** | |
970 | ** Side Effects: | |
971 | ** Removes files in the current directory. | |
972 | ** Prints information regarding files being edited. | |
973 | ** Exits if a "check" command. | |
974 | */ | |
975 | ||
976 | clean(mode, argv) | |
977 | int mode; | |
978 | char **argv; | |
979 | { | |
980 | struct direct *dir; | |
981 | char buf[FBUFSIZ]; | |
982 | char *bufend; | |
983 | register DIR *dirp; | |
984 | register char *basefile; | |
985 | bool gotedit; | |
986 | bool gotpfent; | |
987 | FILE *pfp; | |
988 | bool nobranch = FALSE; | |
989 | extern struct pfile *getpfent(); | |
990 | register struct pfile *pf; | |
991 | register char **ap; | |
992 | extern char *username(); | |
993 | char *usernm = NULL; | |
994 | char *subdir = NULL; | |
995 | char *cmdname; | |
996 | ||
997 | /* | |
998 | ** Process the argv | |
999 | */ | |
1000 | ||
1001 | cmdname = *argv; | |
1002 | for (ap = argv; *++ap != NULL; ) | |
1003 | { | |
1004 | if (**ap == '-') | |
1005 | { | |
1006 | /* we have a flag */ | |
1007 | switch ((*ap)[1]) | |
1008 | { | |
1009 | case 'b': | |
1010 | nobranch = TRUE; | |
1011 | break; | |
1012 | ||
1013 | case 'u': | |
1014 | if ((*ap)[2] != '\0') | |
1015 | usernm = &(*ap)[2]; | |
1016 | else if (ap[1] != NULL && ap[1][0] != '-') | |
1017 | usernm = *++ap; | |
1018 | else | |
1019 | usernm = username(); | |
1020 | break; | |
1021 | } | |
1022 | } | |
1023 | else | |
1024 | { | |
1025 | if (subdir != NULL) | |
1026 | usrerr("too many args"); | |
1027 | else | |
1028 | subdir = *ap; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | /* | |
1033 | ** Find and open the SCCS directory. | |
1034 | */ | |
1035 | ||
1036 | gstrcpy(buf, SccsDir, sizeof(buf)); | |
1037 | if (buf[0] != '\0') | |
1038 | gstrcat(buf, "/", sizeof(buf)); | |
1039 | if (subdir != NULL) | |
1040 | { | |
1041 | gstrcat(buf, subdir, sizeof(buf)); | |
1042 | gstrcat(buf, "/", sizeof(buf)); | |
1043 | } | |
1044 | gstrcat(buf, SccsPath, sizeof(buf)); | |
1045 | bufend = &buf[strlen(buf)]; | |
1046 | ||
1047 | dirp = opendir(buf); | |
1048 | if (dirp == NULL) | |
1049 | { | |
1050 | usrerr("cannot open %s", buf); | |
1051 | return (EX_NOINPUT); | |
1052 | } | |
1053 | ||
1054 | /* | |
1055 | ** Scan the SCCS directory looking for s. files. | |
1056 | ** gotedit tells whether we have tried to clean any | |
1057 | ** files that are being edited. | |
1058 | */ | |
1059 | ||
1060 | gotedit = FALSE; | |
1061 | while (dir = readdir(dirp)) { | |
1062 | if (strncmp(dir->d_name, "s.", 2) != 0) | |
1063 | continue; | |
1064 | ||
1065 | /* got an s. file -- see if the p. file exists */ | |
1066 | gstrcpy(bufend, "/p.", sizeof(buf)); | |
1067 | basefile = bufend + 3; | |
1068 | gstrcpy(basefile, &dir->d_name[2], sizeof(buf)); | |
1069 | ||
1070 | /* | |
1071 | ** open and scan the p-file. | |
1072 | ** 'gotpfent' tells if we have found a valid p-file | |
1073 | ** entry. | |
1074 | */ | |
1075 | ||
1076 | pfp = fopen(buf, "r"); | |
1077 | gotpfent = FALSE; | |
1078 | if (pfp != NULL) | |
1079 | { | |
1080 | /* the file exists -- report it's contents */ | |
1081 | while ((pf = getpfent(pfp)) != NULL) | |
1082 | { | |
1083 | if (nobranch && isbranch(pf->p_nsid)) | |
1084 | continue; | |
1085 | if (usernm != NULL && strcmp(usernm, pf->p_user) != 0 && mode != CLEANC) | |
1086 | continue; | |
1087 | gotedit = TRUE; | |
1088 | gotpfent = TRUE; | |
1089 | if (mode == TELLC) | |
1090 | { | |
1091 | printf("%s\n", basefile); | |
1092 | break; | |
1093 | } | |
1094 | printf("%12s: being edited: ", basefile); | |
1095 | putpfent(pf, stdout); | |
1096 | } | |
1097 | fclose(pfp); | |
1098 | } | |
1099 | ||
1100 | /* the s. file exists and no p. file exists -- unlink the g-file */ | |
1101 | if (mode == CLEANC && !gotpfent) | |
1102 | { | |
1103 | char unlinkbuf[FBUFSIZ]; | |
1104 | gstrcpy(unlinkbuf, &dir->d_name[2], sizeof(unlinkbuf)); | |
1105 | unlink(unlinkbuf); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /* cleanup & report results */ | |
1110 | closedir(dirp); | |
1111 | if (!gotedit && mode == INFOC) | |
1112 | { | |
1113 | printf("Nothing being edited"); | |
1114 | if (nobranch) | |
1115 | printf(" (on trunk)"); | |
1116 | if (usernm == NULL) | |
1117 | printf("\n"); | |
1118 | else | |
1119 | printf(" by %s\n", usernm); | |
1120 | } | |
1121 | if (mode == CHECKC) | |
1122 | exit(gotedit); | |
1123 | return (EX_OK); | |
1124 | } | |
1125 | \f | |
1126 | /* | |
1127 | ** ISBRANCH -- is the SID a branch? | |
1128 | ** | |
1129 | ** Parameters: | |
1130 | ** sid -- the sid to check. | |
1131 | ** | |
1132 | ** Returns: | |
1133 | ** TRUE if the sid represents a branch. | |
1134 | ** FALSE otherwise. | |
1135 | ** | |
1136 | ** Side Effects: | |
1137 | ** none. | |
1138 | */ | |
1139 | ||
1140 | isbranch(sid) | |
1141 | char *sid; | |
1142 | { | |
1143 | register char *p; | |
1144 | int dots; | |
1145 | ||
1146 | dots = 0; | |
1147 | for (p = sid; *p != '\0'; p++) | |
1148 | { | |
1149 | if (*p == '.') | |
1150 | dots++; | |
1151 | if (dots > 1) | |
1152 | return (TRUE); | |
1153 | } | |
1154 | return (FALSE); | |
1155 | } | |
1156 | \f | |
1157 | /* | |
1158 | ** UNEDIT -- unedit a file | |
1159 | ** | |
1160 | ** Checks to see that the current user is actually editting | |
1161 | ** the file and arranges that s/he is not editting it. | |
1162 | ** | |
1163 | ** Parameters: | |
1164 | ** fn -- the name of the file to be unedited. | |
1165 | ** | |
1166 | ** Returns: | |
1167 | ** TRUE -- if the file was successfully unedited. | |
1168 | ** FALSE -- if the file was not unedited for some | |
1169 | ** reason. | |
1170 | ** | |
1171 | ** Side Effects: | |
1172 | ** fn is removed | |
1173 | ** entries are removed from pfile. | |
1174 | */ | |
1175 | ||
1176 | bool | |
1177 | unedit(fn) | |
1178 | char *fn; | |
1179 | { | |
1180 | register FILE *pfp; | |
1181 | char *cp, *pfn; | |
1182 | static char tfn[] = _PATH_TMP; | |
1183 | FILE *tfp; | |
1184 | register char *q; | |
1185 | bool delete = FALSE; | |
1186 | bool others = FALSE; | |
1187 | char *myname; | |
1188 | extern char *username(); | |
1189 | struct pfile *pent; | |
1190 | extern struct pfile *getpfent(); | |
1191 | char buf[PFILELG]; | |
1192 | extern char *makefile(), *rindex(), *tail(); | |
1193 | ||
1194 | /* make "s." filename & find the trailing component */ | |
1195 | pfn = makefile(fn); | |
1196 | if (pfn == NULL) | |
1197 | return (FALSE); | |
1198 | q = rindex(pfn, '/'); | |
1199 | if (q == NULL) | |
1200 | q = &pfn[-1]; | |
1201 | if (q[1] != 's' || q[2] != '.') | |
1202 | { | |
1203 | usrerr("bad file name \"%s\"", fn); | |
1204 | return (FALSE); | |
1205 | } | |
1206 | ||
1207 | /* turn "s." into "p." & try to open it */ | |
1208 | *++q = 'p'; | |
1209 | ||
1210 | pfp = fopen(pfn, "r"); | |
1211 | if (pfp == NULL) | |
1212 | { | |
1213 | printf("%12s: not being edited\n", fn); | |
1214 | return (FALSE); | |
1215 | } | |
1216 | ||
1217 | /* create temp file for editing p-file */ | |
1218 | mktemp(tfn); | |
1219 | tfp = fopen(tfn, "w"); | |
1220 | if (tfp == NULL) | |
1221 | { | |
1222 | usrerr("cannot create \"%s\"", tfn); | |
1223 | exit(EX_OSERR); | |
1224 | } | |
1225 | ||
1226 | /* figure out who I am */ | |
1227 | myname = username(); | |
1228 | ||
1229 | /* | |
1230 | ** Copy p-file to temp file, doing deletions as needed. | |
1231 | */ | |
1232 | ||
1233 | while ((pent = getpfent(pfp)) != NULL) | |
1234 | { | |
1235 | if (strcmp(pent->p_user, myname) == 0) | |
1236 | { | |
1237 | /* a match */ | |
1238 | delete++; | |
1239 | } | |
1240 | else | |
1241 | { | |
1242 | /* output it again */ | |
1243 | putpfent(pent, tfp); | |
1244 | others++; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | /* | |
1249 | * Before changing anything, make sure we can remove | |
1250 | * the file in question (assuming it exists). | |
1251 | */ | |
1252 | if (delete) { | |
1253 | extern int errno; | |
1254 | ||
1255 | cp = tail(fn); | |
1256 | errno = 0; | |
1257 | if (access(cp, 0) < 0 && errno != ENOENT) | |
1258 | goto bad; | |
1259 | if (errno == 0) | |
1260 | /* | |
1261 | * This is wrong, but the rest of the program | |
1262 | * has built in assumptions about "." as well, | |
1263 | * so why make unedit a special case? | |
1264 | */ | |
1265 | if (access(".", 2) < 0) { | |
1266 | bad: | |
1267 | printf("%12s: can't remove\n", cp); | |
1268 | fclose(tfp); | |
1269 | fclose(pfp); | |
1270 | unlink(tfn); | |
1271 | return (FALSE); | |
1272 | } | |
1273 | } | |
1274 | /* do final cleanup */ | |
1275 | if (others) | |
1276 | { | |
1277 | /* copy it back (perhaps it should be linked?) */ | |
1278 | if (freopen(tfn, "r", tfp) == NULL) | |
1279 | { | |
1280 | syserr("cannot reopen \"%s\"", tfn); | |
1281 | exit(EX_OSERR); | |
1282 | } | |
1283 | if (freopen(pfn, "w", pfp) == NULL) | |
1284 | { | |
1285 | usrerr("cannot create \"%s\"", pfn); | |
1286 | return (FALSE); | |
1287 | } | |
1288 | while (fgets(buf, sizeof buf, tfp) != NULL) | |
1289 | fputs(buf, pfp); | |
1290 | } | |
1291 | else | |
1292 | { | |
1293 | /* it's empty -- remove it */ | |
1294 | unlink(pfn); | |
1295 | } | |
1296 | fclose(tfp); | |
1297 | fclose(pfp); | |
1298 | unlink(tfn); | |
1299 | ||
1300 | /* actually remove the g-file */ | |
1301 | if (delete) | |
1302 | { | |
1303 | /* | |
1304 | * Since we've checked above, we can | |
1305 | * use the return from unlink to | |
1306 | * determine if the file existed or not. | |
1307 | */ | |
1308 | if (unlink(cp) >= 0) | |
1309 | printf("%12s: removed\n", cp); | |
1310 | return (TRUE); | |
1311 | } | |
1312 | else | |
1313 | { | |
1314 | printf("%12s: not being edited by you\n", fn); | |
1315 | return (FALSE); | |
1316 | } | |
1317 | } | |
1318 | \f | |
1319 | /* | |
1320 | ** DODIFF -- diff an s-file against a g-file | |
1321 | ** | |
1322 | ** Parameters: | |
1323 | ** getv -- argv for the 'get' command. | |
1324 | ** gfile -- name of the g-file to diff against. | |
1325 | ** | |
1326 | ** Returns: | |
1327 | ** Result of get. | |
1328 | ** | |
1329 | ** Side Effects: | |
1330 | ** none. | |
1331 | */ | |
1332 | ||
1333 | dodiff(getv, gfile) | |
1334 | char **getv; | |
1335 | char *gfile; | |
1336 | { | |
1337 | int pipev[2]; | |
1338 | int rval; | |
1339 | register int i; | |
1340 | register int pid; | |
1341 | auto int st; | |
1342 | extern int errno; | |
1343 | sig_t osig; | |
1344 | ||
1345 | printf("\n------- %s -------\n", gfile); | |
1346 | fflush(stdout); | |
1347 | ||
1348 | /* create context for diff to run in */ | |
1349 | if (pipe(pipev) < 0) | |
1350 | { | |
1351 | syserr("dodiff: pipe failed"); | |
1352 | exit(EX_OSERR); | |
1353 | } | |
1354 | if ((pid = fork()) < 0) | |
1355 | { | |
1356 | syserr("dodiff: fork failed"); | |
1357 | exit(EX_OSERR); | |
1358 | } | |
1359 | else if (pid > 0) | |
1360 | { | |
1361 | /* in parent; run get */ | |
1362 | OutFile = pipev[1]; | |
1363 | close(pipev[0]); | |
1364 | rval = command(&getv[1], TRUE, "get:rcixt -s -k -p"); | |
1365 | osig = signal(SIGINT, SIG_IGN); | |
1366 | while (((i = wait(&st)) >= 0 && i != pid) || errno == EINTR) | |
1367 | errno = 0; | |
1368 | signal(SIGINT, osig); | |
1369 | /* ignore result of diff */ | |
1370 | } | |
1371 | else | |
1372 | { | |
1373 | /* in child, run diff */ | |
1374 | if (close(pipev[1]) < 0 || close(0) < 0 || | |
1375 | dup(pipev[0]) != 0 || close(pipev[0]) < 0) | |
1376 | { | |
1377 | syserr("dodiff: magic failed"); | |
1378 | exit(EX_OSERR); | |
1379 | } | |
1380 | command(&getv[1], FALSE, "-diff:elsfhbC"); | |
1381 | } | |
1382 | return (rval); | |
1383 | } | |
1384 | \f | |
1385 | /* | |
1386 | ** TAIL -- return tail of filename. | |
1387 | ** | |
1388 | ** Parameters: | |
1389 | ** fn -- the filename. | |
1390 | ** | |
1391 | ** Returns: | |
1392 | ** a pointer to the tail of the filename; e.g., given | |
1393 | ** "cmd/ls.c", "ls.c" is returned. | |
1394 | ** | |
1395 | ** Side Effects: | |
1396 | ** none. | |
1397 | */ | |
1398 | ||
1399 | char * | |
1400 | tail(fn) | |
1401 | register char *fn; | |
1402 | { | |
1403 | register char *p; | |
1404 | ||
1405 | for (p = fn; *p != 0; p++) | |
1406 | if (*p == '/' && p[1] != '\0' && p[1] != '/') | |
1407 | fn = &p[1]; | |
1408 | return (fn); | |
1409 | } | |
1410 | \f | |
1411 | /* | |
1412 | ** GETPFENT -- get an entry from the p-file | |
1413 | ** | |
1414 | ** Parameters: | |
1415 | ** pfp -- p-file file pointer | |
1416 | ** | |
1417 | ** Returns: | |
1418 | ** pointer to p-file struct for next entry | |
1419 | ** NULL on EOF or error | |
1420 | ** | |
1421 | ** Side Effects: | |
1422 | ** Each call wipes out results of previous call. | |
1423 | */ | |
1424 | ||
1425 | struct pfile * | |
1426 | getpfent(pfp) | |
1427 | FILE *pfp; | |
1428 | { | |
1429 | static struct pfile ent; | |
1430 | static char buf[PFILELG]; | |
1431 | register char *p; | |
1432 | extern char *nextfield(); | |
1433 | ||
1434 | if (fgets(buf, sizeof buf, pfp) == NULL) | |
1435 | return (NULL); | |
1436 | ||
1437 | ent.p_osid = p = buf; | |
1438 | ent.p_nsid = p = nextfield(p); | |
1439 | ent.p_user = p = nextfield(p); | |
1440 | ent.p_date = p = nextfield(p); | |
1441 | ent.p_time = p = nextfield(p); | |
1442 | ent.p_aux = p = nextfield(p); | |
1443 | ||
1444 | return (&ent); | |
1445 | } | |
1446 | ||
1447 | ||
1448 | char * | |
1449 | nextfield(p) | |
1450 | register char *p; | |
1451 | { | |
1452 | if (p == NULL || *p == '\0') | |
1453 | return (NULL); | |
1454 | while (*p != ' ' && *p != '\n' && *p != '\0') | |
1455 | p++; | |
1456 | if (*p == '\n' || *p == '\0') | |
1457 | { | |
1458 | *p = '\0'; | |
1459 | return (NULL); | |
1460 | } | |
1461 | *p++ = '\0'; | |
1462 | return (p); | |
1463 | } | |
1464 | \f/* | |
1465 | ** PUTPFENT -- output a p-file entry to a file | |
1466 | ** | |
1467 | ** Parameters: | |
1468 | ** pf -- the p-file entry | |
1469 | ** f -- the file to put it on. | |
1470 | ** | |
1471 | ** Returns: | |
1472 | ** none. | |
1473 | ** | |
1474 | ** Side Effects: | |
1475 | ** pf is written onto file f. | |
1476 | */ | |
1477 | ||
1478 | putpfent(pf, f) | |
1479 | register struct pfile *pf; | |
1480 | register FILE *f; | |
1481 | { | |
1482 | fprintf(f, "%s %s %s %s %s", pf->p_osid, pf->p_nsid, | |
1483 | pf->p_user, pf->p_date, pf->p_time); | |
1484 | if (pf->p_aux != NULL) | |
1485 | fprintf(f, " %s", pf->p_aux); | |
1486 | else | |
1487 | fprintf(f, "\n"); | |
1488 | } | |
1489 | \f | |
1490 | /* | |
1491 | ** USRERR -- issue user-level error | |
1492 | ** | |
1493 | ** Parameters: | |
1494 | ** f -- format string. | |
1495 | ** p1-p3 -- parameters to a printf. | |
1496 | ** | |
1497 | ** Returns: | |
1498 | ** -1 | |
1499 | ** | |
1500 | ** Side Effects: | |
1501 | ** none. | |
1502 | */ | |
1503 | ||
1504 | /*VARARGS1*/ | |
1505 | usrerr(f, p1, p2, p3) | |
1506 | char *f; | |
1507 | { | |
1508 | fprintf(stderr, "\n%s: ", MyName); | |
1509 | fprintf(stderr, f, p1, p2, p3); | |
1510 | fprintf(stderr, "\n"); | |
1511 | ||
1512 | return (-1); | |
1513 | } | |
1514 | \f | |
1515 | /* | |
1516 | ** SYSERR -- print system-generated error. | |
1517 | ** | |
1518 | ** Parameters: | |
1519 | ** f -- format string to a printf. | |
1520 | ** p1, p2, p3 -- parameters to f. | |
1521 | ** | |
1522 | ** Returns: | |
1523 | ** never. | |
1524 | ** | |
1525 | ** Side Effects: | |
1526 | ** none. | |
1527 | */ | |
1528 | ||
1529 | /*VARARGS1*/ | |
1530 | syserr(f, p1, p2, p3) | |
1531 | char *f; | |
1532 | { | |
1533 | extern int errno; | |
1534 | ||
1535 | fprintf(stderr, "\n%s SYSERR: ", MyName); | |
1536 | fprintf(stderr, f, p1, p2, p3); | |
1537 | fprintf(stderr, "\n"); | |
1538 | if (errno == 0) | |
1539 | exit(EX_SOFTWARE); | |
1540 | else | |
1541 | { | |
1542 | perror(NULL); | |
1543 | exit(EX_OSERR); | |
1544 | } | |
1545 | } | |
1546 | \f/* | |
1547 | ** USERNAME -- return name of the current user | |
1548 | ** | |
1549 | ** Parameters: | |
1550 | ** none | |
1551 | ** | |
1552 | ** Returns: | |
1553 | ** name of current user | |
1554 | ** | |
1555 | ** Side Effects: | |
1556 | ** none | |
1557 | */ | |
1558 | ||
1559 | char * | |
1560 | username() | |
1561 | { | |
1562 | # ifdef UIDUSER | |
1563 | extern struct passwd *getpwuid(); | |
1564 | register struct passwd *pw; | |
1565 | ||
1566 | pw = getpwuid(getuid()); | |
1567 | if (pw == NULL) | |
1568 | { | |
1569 | syserr("who are you? (uid=%d)", getuid()); | |
1570 | exit(EX_OSERR); | |
1571 | } | |
1572 | return (pw->pw_name); | |
1573 | # else | |
1574 | extern char *getlogin(); | |
1575 | register char *p; | |
1576 | ||
1577 | p = getenv("USER"); | |
1578 | if (p == NULL || p[0] == '\0') | |
1579 | p = getlogin(); | |
1580 | return (p); | |
1581 | # endif UIDUSER | |
1582 | } | |
1583 | \f | |
1584 | /* | |
1585 | ** Guarded string manipulation routines; the last argument | |
1586 | ** is the length of the buffer into which the strcpy or strcat | |
1587 | ** is to be done. | |
1588 | */ | |
1589 | char *gstrcat(to, from, length) | |
1590 | char *to, *from; | |
1591 | int length; | |
1592 | { | |
1593 | if (strlen(from) + strlen(to) >= length) { | |
1594 | gstrbotch(to, from); | |
1595 | } | |
1596 | return(strcat(to, from)); | |
1597 | } | |
1598 | ||
1599 | char *gstrncat(to, from, n, length) | |
1600 | char *to, *from; | |
1601 | int n; | |
1602 | int length; | |
1603 | { | |
1604 | if (n + strlen(to) >= length) { | |
1605 | gstrbotch(to, from); | |
1606 | } | |
1607 | return(strncat(to, from, n)); | |
1608 | } | |
1609 | ||
1610 | char *gstrcpy(to, from, length) | |
1611 | char *to, *from; | |
1612 | int length; | |
1613 | { | |
1614 | if (strlen(from) >= length) { | |
1615 | gstrbotch(from, (char *)0); | |
1616 | } | |
1617 | return(strcpy(to, from)); | |
1618 | } | |
1619 | gstrbotch(str1, str2) | |
1620 | char *str1, *str2; | |
1621 | { | |
1622 | usrerr("Filename(s) too long: %s %s", str1, str2); | |
1623 | } |