Commit | Line | Data |
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1cc2dcec EA |
1 | # include <stdio.h> |
2 | # include <sys/types.h> | |
3 | # include <sys/stat.h> | |
399058e3 | 4 | # include <sys/dir.h> |
629c0863 EA |
5 | # include <errno.h> |
6 | # include <signal.h> | |
1cc2dcec | 7 | # include <sysexits.h> |
7a8ba074 | 8 | # include <whoami.h> |
1cc2dcec | 9 | |
27e713f7 EA |
10 | /* |
11 | ** SCCS.C -- human-oriented front end to the SCCS system. | |
12 | ** | |
13 | ** Without trying to add any functionality to speak of, this | |
14 | ** program tries to make SCCS a little more accessible to human | |
15 | ** types. The main thing it does is automatically put the | |
16 | ** string "SCCS/s." on the front of names. Also, it has a | |
17 | ** couple of things that are designed to shorten frequent | |
18 | ** combinations, e.g., "delget" which expands to a "delta" | |
19 | ** and a "get". | |
20 | ** | |
21 | ** This program can also function as a setuid front end. | |
22 | ** To do this, you should copy the source, renaming it to | |
23 | ** whatever you want, e.g., "syssccs". Change any defaults | |
24 | ** in the program (e.g., syssccs might default -d to | |
25 | ** "/usr/src/sys"). Then recompile and put the result | |
26 | ** as setuid to whomever you want. In this mode, sccs | |
27 | ** knows to not run setuid for certain programs in order | |
28 | ** to preserve security, and so forth. | |
29 | ** | |
30 | ** Usage: | |
31 | ** sccs [flags] command [args] | |
32 | ** | |
33 | ** Flags: | |
34 | ** -d<dir> <dir> represents a directory to search | |
35 | ** out of. It should be a full pathname | |
36 | ** for general usage. E.g., if <dir> is | |
37 | ** "/usr/src/sys", then a reference to the | |
38 | ** file "dev/bio.c" becomes a reference to | |
39 | ** "/usr/src/sys/dev/bio.c". | |
40 | ** -p<path> prepends <path> to the final component | |
41 | ** of the pathname. By default, this is | |
42 | ** "SCCS". For example, in the -d example | |
43 | ** above, the path then gets modified to | |
44 | ** "/usr/src/sys/dev/SCCS/s.bio.c". In | |
45 | ** more common usage (without the -d flag), | |
46 | ** "prog.c" would get modified to | |
47 | ** "SCCS/s.prog.c". In both cases, the | |
48 | ** "s." gets automatically prepended. | |
49 | ** -r run as the real user. | |
50 | ** | |
51 | ** Commands: | |
52 | ** admin, | |
53 | ** get, | |
54 | ** delta, | |
55 | ** rmdel, | |
56 | ** chghist, | |
57 | ** etc. Straight out of SCCS; only difference | |
58 | ** is that pathnames get modified as | |
59 | ** described above. | |
60 | ** edit Macro for "get -e". | |
61 | ** unedit Removes a file being edited, knowing | |
62 | ** about p-files, etc. | |
63 | ** delget Macro for "delta" followed by "get". | |
64 | ** deledit Macro for "delta" followed by "get -e". | |
65 | ** info Tell what files being edited. | |
66 | ** clean Remove all files that can be | |
67 | ** regenerated from SCCS files. | |
d266e8cb | 68 | ** check Like info, but return exit status, for |
27e713f7 EA |
69 | ** use in makefiles. |
70 | ** fix Remove a top delta & reedit, but save | |
71 | ** the previous changes in that delta. | |
72 | ** | |
73 | ** Compilation Flags: | |
74 | ** UIDUSER -- determine who the user is by looking at the | |
75 | ** uid rather than the login name -- for machines | |
76 | ** where SCCS gets the user in this way. | |
56151b9e | 77 | ** SCCSDIR -- if defined, forces the -d flag to take on |
d266e8cb EA |
78 | ** this value. This is so that the setuid |
79 | ** aspects of this program cannot be abused. | |
56151b9e EA |
80 | ** This flag also disables the -p flag. |
81 | ** SCCSPATH -- the default for the -p flag. | |
27082f2b EA |
82 | ** MYNAME -- the title this program should print when it |
83 | ** gives error messages. | |
27e713f7 EA |
84 | ** |
85 | ** Compilation Instructions: | |
86 | ** cc -O -n -s sccs.c | |
27082f2b EA |
87 | ** The flags listed above can be -D defined to simplify |
88 | ** recompilation for variant versions. | |
27e713f7 EA |
89 | ** |
90 | ** Author: | |
91 | ** Eric Allman, UCB/INGRES | |
56151b9e | 92 | ** Copyright 1980 Regents of the University of California |
27e713f7 EA |
93 | */ |
94 | ||
d597ad9e | 95 | static char SccsId[] = "@(#)sccs.c 1.40 %G%"; |
2d351698 | 96 | \f |
56151b9e EA |
97 | /******************* Configuration Information ********************/ |
98 | ||
27082f2b EA |
99 | /* special defines for local berkeley systems */ |
100 | # include <whoami.h> | |
101 | ||
27e713f7 EA |
102 | # ifdef CSVAX |
103 | # define UIDUSER | |
56151b9e EA |
104 | # define PROGPATH(name) "/usr/local/name" |
105 | # endif CSVAX | |
106 | ||
27082f2b EA |
107 | /* end of berkeley systems defines */ |
108 | ||
109 | # ifndef SCCSPATH | |
2d351698 | 110 | # define SCCSPATH "SCCS" /* pathname in which to find s-files */ |
27082f2b | 111 | # endif NOT SCCSPATH |
56151b9e | 112 | |
27082f2b EA |
113 | # ifndef MYNAME |
114 | # define MYNAME "sccs" /* name used for printing errors */ | |
115 | # endif NOT MYNAME | |
27e713f7 | 116 | |
2d351698 EA |
117 | # ifndef PROGPATH |
118 | # define PROGPATH(name) "/usr/sccs/name" /* place to find binaries */ | |
119 | # endif PROGPATH | |
2a0234bf | 120 | |
2d351698 EA |
121 | /**************** End of Configuration Information ****************/ |
122 | \f | |
2a0234bf | 123 | typedef char bool; |
a97ecd0d EA |
124 | # define TRUE 1 |
125 | # define FALSE 0 | |
81dc6403 | 126 | |
e1e64d36 EA |
127 | # define bitset(bit, word) ((bool) ((bit) & (word))) |
128 | ||
27e713f7 EA |
129 | # ifdef UIDUSER |
130 | # include <pwd.h> | |
131 | # endif UIDUSER | |
132 | ||
1cc2dcec EA |
133 | struct sccsprog |
134 | { | |
135 | char *sccsname; /* name of SCCS routine */ | |
a97ecd0d EA |
136 | short sccsoper; /* opcode, see below */ |
137 | short sccsflags; /* flags, see below */ | |
1dbb3fe7 | 138 | char *sccsklets; /* valid key-letters on macros */ |
1cc2dcec EA |
139 | char *sccspath; /* pathname of binary implementing */ |
140 | }; | |
141 | ||
a97ecd0d EA |
142 | /* values for sccsoper */ |
143 | # define PROG 0 /* call a program */ | |
e672376b | 144 | # define CMACRO 1 /* command substitution macro */ |
4535945e | 145 | # define FIX 2 /* fix a delta */ |
399058e3 | 146 | # define CLEAN 3 /* clean out recreatable files */ |
61886f2a | 147 | # define UNEDIT 4 /* unedit a file */ |
c9ac6819 | 148 | # define SHELL 5 /* call a shell file (like PROG) */ |
629c0863 | 149 | # define DIFFS 6 /* diff between sccs & file out */ |
a97ecd0d | 150 | |
2a0234bf | 151 | /* bits for sccsflags */ |
a97ecd0d EA |
152 | # define NO_SDOT 0001 /* no s. on front of args */ |
153 | # define REALUSER 0002 /* protected (e.g., admin) */ | |
1cc2dcec | 154 | |
89819fbe EA |
155 | /* modes for the "clean", "info", "check" ops */ |
156 | # define CLEANC 0 /* clean command */ | |
157 | # define INFOC 1 /* info command */ | |
158 | # define CHECKC 2 /* check command */ | |
159 | ||
2d351698 EA |
160 | /* |
161 | ** Description of commands known to this program. | |
162 | ** First argument puts the command into a class. Second arg is | |
163 | ** info regarding treatment of this command. Third arg is a | |
164 | ** list of flags this command accepts from macros, etc. Fourth | |
165 | ** arg is the pathname of the implementing program, or the | |
166 | ** macro definition, or the arg to a sub-algorithm. | |
167 | */ | |
7a8ba074 | 168 | |
1cc2dcec EA |
169 | struct sccsprog SccsProg[] = |
170 | { | |
1dbb3fe7 EA |
171 | "admin", PROG, REALUSER, "", PROGPATH(admin), |
172 | "chghist", PROG, 0, "", PROGPATH(rmdel), | |
173 | "comb", PROG, 0, "", PROGPATH(comb), | |
174 | "delta", PROG, 0, "mysrp", PROGPATH(delta), | |
778fafae | 175 | "get", PROG, 0, "ixbeskcl", PROGPATH(get), |
1dbb3fe7 EA |
176 | "help", PROG, NO_SDOT, "", PROGPATH(help), |
177 | "prt", PROG, 0, "", PROGPATH(prt), | |
178 | "rmdel", PROG, REALUSER, "", PROGPATH(rmdel), | |
179 | "what", PROG, NO_SDOT, "", PROGPATH(what), | |
c9ac6819 | 180 | "sccsdiff", SHELL, REALUSER, "", PROGPATH(sccsdiff), |
778fafae | 181 | "edit", CMACRO, NO_SDOT, "ixbscl", "get -e", |
1dbb3fe7 EA |
182 | "delget", CMACRO, NO_SDOT, "", "delta/get -t", |
183 | "deledit", CMACRO, NO_SDOT, "", "delta/get -e -t", | |
184 | "fix", FIX, NO_SDOT, "", NULL, | |
185 | "clean", CLEAN, REALUSER, "", (char *) CLEANC, | |
186 | "info", CLEAN, REALUSER, "", (char *) INFOC, | |
187 | "check", CLEAN, REALUSER, "", (char *) CHECKC, | |
188 | "unedit", UNEDIT, NO_SDOT, "", NULL, | |
629c0863 | 189 | "diffs", DIFFS, NO_SDOT|REALUSER, "", NULL, |
1dbb3fe7 | 190 | NULL, -1, 0, "", NULL |
1cc2dcec EA |
191 | }; |
192 | ||
2d351698 | 193 | /* one line from a p-file */ |
61886f2a EA |
194 | struct pfile |
195 | { | |
196 | char *p_osid; /* old SID */ | |
197 | char *p_nsid; /* new SID */ | |
198 | char *p_user; /* user who did edit */ | |
199 | char *p_date; /* date of get */ | |
200 | char *p_time; /* time of get */ | |
201 | }; | |
202 | ||
56151b9e EA |
203 | char *SccsPath = SCCSPATH; /* pathname of SCCS files */ |
204 | # ifdef SCCSDIR | |
205 | char *SccsDir = SCCSDIR; /* directory to begin search from */ | |
d266e8cb | 206 | # else |
56151b9e | 207 | char *SccsDir = ""; |
d266e8cb | 208 | # endif |
27082f2b | 209 | char MyName[] = MYNAME; /* name used in messages */ |
629c0863 | 210 | int OutFile = -1; /* override output file for commands */ |
2a0234bf | 211 | bool RealUser; /* if set, running as real user */ |
27e36d02 EA |
212 | # ifdef DEBUG |
213 | bool Debug; /* turn on tracing */ | |
214 | # endif | |
2d351698 | 215 | \f |
1cc2dcec EA |
216 | main(argc, argv) |
217 | int argc; | |
218 | char **argv; | |
219 | { | |
220 | register char *p; | |
1045e3ba | 221 | extern struct sccsprog *lookup(); |
e8a6a730 | 222 | register int i; |
1cc2dcec EA |
223 | |
224 | /* | |
225 | ** Detect and decode flags intended for this program. | |
226 | */ | |
227 | ||
a97ecd0d EA |
228 | if (argc < 2) |
229 | { | |
d266e8cb | 230 | fprintf(stderr, "Usage: %s [flags] command [flags]\n", MyName); |
a97ecd0d EA |
231 | exit(EX_USAGE); |
232 | } | |
233 | argv[argc] = NULL; | |
234 | ||
1045e3ba | 235 | if (lookup(argv[0]) == NULL) |
1cc2dcec | 236 | { |
1045e3ba | 237 | while ((p = *++argv) != NULL) |
1cc2dcec | 238 | { |
1045e3ba EA |
239 | if (*p != '-') |
240 | break; | |
241 | switch (*++p) | |
242 | { | |
243 | case 'r': /* run as real user */ | |
244 | setuid(getuid()); | |
245 | RealUser++; | |
246 | break; | |
247 | ||
56151b9e | 248 | # ifndef SCCSDIR |
1045e3ba EA |
249 | case 'p': /* path of sccs files */ |
250 | SccsPath = ++p; | |
251 | break; | |
252 | ||
02ec3e87 EA |
253 | case 'd': /* directory to search from */ |
254 | SccsDir = ++p; | |
255 | break; | |
d266e8cb | 256 | # endif |
02ec3e87 | 257 | |
27e36d02 EA |
258 | # ifdef DEBUG |
259 | case 'T': /* trace */ | |
260 | Debug++; | |
261 | break; | |
262 | # endif | |
263 | ||
1045e3ba | 264 | default: |
d266e8cb | 265 | usrerr("unknown option -%s", p); |
1045e3ba EA |
266 | break; |
267 | } | |
1cc2dcec | 268 | } |
1045e3ba EA |
269 | if (SccsPath[0] == '\0') |
270 | SccsPath = "."; | |
1cc2dcec EA |
271 | } |
272 | ||
1dbb3fe7 | 273 | i = command(argv, FALSE, FALSE, ""); |
e8a6a730 | 274 | exit(i); |
a97ecd0d | 275 | } |
2d351698 EA |
276 | \f |
277 | /* | |
e8a6a730 EA |
278 | ** COMMAND -- look up and perform a command |
279 | ** | |
280 | ** This routine is the guts of this program. Given an | |
281 | ** argument vector, it looks up the "command" (argv[0]) | |
282 | ** in the configuration table and does the necessary stuff. | |
283 | ** | |
284 | ** Parameters: | |
285 | ** argv -- an argument vector to process. | |
286 | ** forkflag -- if set, fork before executing the command. | |
1dbb3fe7 EA |
287 | ** editflag -- if set, only include flags listed in the |
288 | ** sccsklets field of the command descriptor. | |
289 | ** arg0 -- a space-seperated list of arguments to insert | |
290 | ** before argv. | |
e8a6a730 EA |
291 | ** |
292 | ** Returns: | |
293 | ** zero -- command executed ok. | |
294 | ** else -- error status. | |
295 | ** | |
296 | ** Side Effects: | |
297 | ** none. | |
298 | */ | |
a97ecd0d | 299 | |
1dbb3fe7 | 300 | command(argv, forkflag, editflag, arg0) |
a97ecd0d | 301 | char **argv; |
e672376b | 302 | bool forkflag; |
1dbb3fe7 EA |
303 | bool editflag; |
304 | char *arg0; | |
a97ecd0d EA |
305 | { |
306 | register struct sccsprog *cmd; | |
307 | register char *p; | |
e672376b | 308 | char buf[40]; |
1045e3ba | 309 | extern struct sccsprog *lookup(); |
1dbb3fe7 EA |
310 | char *nav[1000]; |
311 | char **np; | |
c9ac6819 | 312 | register char **ap; |
9c3bf134 | 313 | register int i; |
c9ac6819 | 314 | register char *q; |
9c3bf134 | 315 | extern bool unedit(); |
e8a6a730 | 316 | int rval = 0; |
1dbb3fe7 EA |
317 | extern char *index(); |
318 | extern char *makefile(); | |
4cd62a3c | 319 | extern char *tail(); |
27e36d02 EA |
320 | |
321 | # ifdef DEBUG | |
322 | if (Debug) | |
323 | { | |
1dbb3fe7 EA |
324 | printf("command:\n\t\"%s\"\n", arg0); |
325 | for (np = argv; *np != NULL; np++) | |
326 | printf("\t\"%s\"\n", *np); | |
27e36d02 EA |
327 | } |
328 | # endif | |
2a0234bf | 329 | |
1dbb3fe7 EA |
330 | /* |
331 | ** Copy arguments. | |
e1e64d36 EA |
332 | ** Copy from arg0 & if necessary at most one arg |
333 | ** from argv[0]. | |
1dbb3fe7 EA |
334 | */ |
335 | ||
c9ac6819 | 336 | np = ap = &nav[1]; |
1dbb3fe7 EA |
337 | for (p = arg0, q = buf; *p != '\0' && *p != '/'; ) |
338 | { | |
339 | *np++ = q; | |
340 | while (*p == ' ') | |
341 | p++; | |
342 | while (*p != ' ' && *p != '\0' && *p != '/') | |
343 | *q++ = *p++; | |
344 | *q++ = '\0'; | |
345 | } | |
346 | *np = NULL; | |
c9ac6819 | 347 | if (*ap == NULL) |
1dbb3fe7 EA |
348 | *np++ = *argv++; |
349 | ||
1cc2dcec EA |
350 | /* |
351 | ** Look up command. | |
c9ac6819 | 352 | ** At this point, *ap is the command name. |
1cc2dcec EA |
353 | */ |
354 | ||
c9ac6819 | 355 | cmd = lookup(*ap); |
1045e3ba | 356 | if (cmd == NULL) |
1cc2dcec | 357 | { |
c9ac6819 | 358 | usrerr("Unknown command \"%s\"", *ap); |
e8a6a730 | 359 | return (EX_USAGE); |
1cc2dcec EA |
360 | } |
361 | ||
1dbb3fe7 EA |
362 | /* |
363 | ** Copy remaining arguments doing editing as appropriate. | |
364 | */ | |
365 | ||
366 | for (; *argv != NULL; argv++) | |
367 | { | |
368 | p = *argv; | |
369 | if (*p == '-') | |
370 | { | |
371 | if (p[1] == '\0' || !editflag || cmd->sccsklets == NULL || | |
372 | index(cmd->sccsklets, p[1]) != NULL) | |
373 | *np++ = p; | |
374 | } | |
375 | else | |
376 | { | |
377 | if (!bitset(NO_SDOT, cmd->sccsflags)) | |
378 | p = makefile(p); | |
379 | if (p != NULL) | |
380 | *np++ = p; | |
381 | } | |
382 | } | |
383 | *np = NULL; | |
384 | ||
2a0234bf | 385 | /* |
a97ecd0d | 386 | ** Interpret operation associated with this command. |
2a0234bf EA |
387 | */ |
388 | ||
a97ecd0d EA |
389 | switch (cmd->sccsoper) |
390 | { | |
c9ac6819 EA |
391 | case SHELL: /* call a shell file */ |
392 | *ap = cmd->sccspath; | |
393 | *--ap = "sh"; | |
394 | rval = callprog("/bin/sh", cmd->sccsflags, ap, forkflag); | |
395 | break; | |
396 | ||
a97ecd0d | 397 | case PROG: /* call an sccs prog */ |
c9ac6819 | 398 | rval = callprog(cmd->sccspath, cmd->sccsflags, ap, forkflag); |
e672376b EA |
399 | break; |
400 | ||
401 | case CMACRO: /* command macro */ | |
e1e64d36 | 402 | /* step through & execute each part of the macro */ |
e672376b EA |
403 | for (p = cmd->sccspath; *p != '\0'; p++) |
404 | { | |
1dbb3fe7 EA |
405 | q = p; |
406 | while (*p != '\0' && *p != '/') | |
407 | p++; | |
c9ac6819 | 408 | rval = command(&ap[1], *p != '\0', TRUE, q); |
e8a6a730 EA |
409 | if (rval != 0) |
410 | break; | |
e672376b | 411 | } |
e8a6a730 | 412 | break; |
a97ecd0d | 413 | |
4535945e | 414 | case FIX: /* fix a delta */ |
c9ac6819 | 415 | if (strncmp(ap[1], "-r", 2) != 0) |
4535945e | 416 | { |
d266e8cb | 417 | usrerr("-r flag needed for fix command"); |
e8a6a730 | 418 | rval = EX_USAGE; |
4535945e EA |
419 | break; |
420 | } | |
e1e64d36 EA |
421 | |
422 | /* get the version with all changes */ | |
c9ac6819 | 423 | rval = command(&ap[1], TRUE, TRUE, "get -k"); |
e1e64d36 EA |
424 | |
425 | /* now remove that version from the s-file */ | |
e8a6a730 | 426 | if (rval == 0) |
c9ac6819 | 427 | rval = command(&ap[1], TRUE, TRUE, "rmdel"); |
e1e64d36 EA |
428 | |
429 | /* and edit the old version (but don't clobber new vers) */ | |
e8a6a730 | 430 | if (rval == 0) |
c9ac6819 | 431 | rval = command(&ap[2], FALSE, TRUE, "get -e -g"); |
e8a6a730 | 432 | break; |
4535945e | 433 | |
399058e3 | 434 | case CLEAN: |
e8a6a730 | 435 | rval = clean((int) cmd->sccspath); |
399058e3 EA |
436 | break; |
437 | ||
61886f2a | 438 | case UNEDIT: |
c9ac6819 | 439 | for (argv = np = &ap[1]; *argv != NULL; argv++) |
9c3bf134 | 440 | { |
1dbb3fe7 EA |
441 | if (unedit(*argv)) |
442 | *np++ = *argv; | |
9c3bf134 | 443 | } |
1dbb3fe7 | 444 | *np = NULL; |
e1e64d36 EA |
445 | |
446 | /* get all the files that we unedited successfully */ | |
9c3bf134 | 447 | if (i > 0) |
c9ac6819 | 448 | rval = command(&ap[1], FALSE, FALSE, "get"); |
61886f2a EA |
449 | break; |
450 | ||
629c0863 EA |
451 | case DIFFS: /* diff between s-file & edit file */ |
452 | /* find the end of the flag arguments */ | |
453 | for (np = &ap[1]; *np != NULL && **np == '-'; np++) | |
454 | continue; | |
455 | argv = np; | |
456 | ||
457 | /* for each file, do the diff */ | |
458 | while (*np != NULL) | |
459 | { | |
e1e64d36 | 460 | /* messy, but we need a null terminated argv */ |
629c0863 EA |
461 | *argv = *np++; |
462 | p = *np; | |
463 | *np = NULL; | |
4cd62a3c | 464 | i = dodiff(ap, tail(*argv)); |
629c0863 EA |
465 | if (rval == 0) |
466 | rval = i; | |
467 | *np = p; | |
468 | } | |
469 | break; | |
470 | ||
a97ecd0d | 471 | default: |
d266e8cb | 472 | syserr("oper %d", cmd->sccsoper); |
a97ecd0d EA |
473 | exit(EX_SOFTWARE); |
474 | } | |
e8a6a730 EA |
475 | # ifdef DEBUG |
476 | if (Debug) | |
477 | printf("command: rval=%d\n", rval); | |
478 | # endif | |
479 | return (rval); | |
a97ecd0d | 480 | } |
2d351698 EA |
481 | \f |
482 | /* | |
1045e3ba EA |
483 | ** LOOKUP -- look up an SCCS command name. |
484 | ** | |
485 | ** Parameters: | |
486 | ** name -- the name of the command to look up. | |
487 | ** | |
488 | ** Returns: | |
489 | ** ptr to command descriptor for this command. | |
490 | ** NULL if no such entry. | |
491 | ** | |
492 | ** Side Effects: | |
493 | ** none. | |
494 | */ | |
495 | ||
496 | struct sccsprog * | |
497 | lookup(name) | |
498 | char *name; | |
499 | { | |
500 | register struct sccsprog *cmd; | |
501 | ||
502 | for (cmd = SccsProg; cmd->sccsname != NULL; cmd++) | |
503 | { | |
504 | if (strcmp(cmd->sccsname, name) == 0) | |
505 | return (cmd); | |
506 | } | |
507 | return (NULL); | |
508 | } | |
2d351698 EA |
509 | \f |
510 | /* | |
e8a6a730 EA |
511 | ** CALLPROG -- call a program |
512 | ** | |
1dbb3fe7 | 513 | ** Used to call the SCCS programs. |
e8a6a730 EA |
514 | ** |
515 | ** Parameters: | |
516 | ** progpath -- pathname of the program to call. | |
517 | ** flags -- status flags from the command descriptors. | |
518 | ** argv -- an argument vector to pass to the program. | |
519 | ** forkflag -- if true, fork before calling, else just | |
520 | ** exec. | |
521 | ** | |
522 | ** Returns: | |
523 | ** The exit status of the program. | |
524 | ** Nothing if forkflag == FALSE. | |
525 | ** | |
526 | ** Side Effects: | |
527 | ** Can exit if forkflag == FALSE. | |
528 | */ | |
4535945e | 529 | |
a97ecd0d EA |
530 | callprog(progpath, flags, argv, forkflag) |
531 | char *progpath; | |
532 | short flags; | |
533 | char **argv; | |
534 | bool forkflag; | |
535 | { | |
a97ecd0d | 536 | register int i; |
e672376b | 537 | auto int st; |
1dbb3fe7 EA |
538 | |
539 | # ifdef DEBUG | |
540 | if (Debug) | |
541 | { | |
542 | printf("callprog:\n"); | |
543 | for (i = 0; argv[i] != NULL; i++) | |
544 | printf("\t\"%s\"\n", argv[i]); | |
545 | } | |
546 | # endif | |
a97ecd0d EA |
547 | |
548 | if (*argv == NULL) | |
549 | return (-1); | |
2a0234bf | 550 | |
1cc2dcec | 551 | /* |
4535945e | 552 | ** Fork if appropriate. |
1cc2dcec EA |
553 | */ |
554 | ||
a97ecd0d EA |
555 | if (forkflag) |
556 | { | |
27e36d02 EA |
557 | # ifdef DEBUG |
558 | if (Debug) | |
559 | printf("Forking\n"); | |
560 | # endif | |
a97ecd0d EA |
561 | i = fork(); |
562 | if (i < 0) | |
563 | { | |
d266e8cb | 564 | syserr("cannot fork"); |
a97ecd0d EA |
565 | exit(EX_OSERR); |
566 | } | |
567 | else if (i > 0) | |
e672376b EA |
568 | { |
569 | wait(&st); | |
e8a6a730 EA |
570 | if ((st & 0377) == 0) |
571 | st = (st >> 8) & 0377; | |
629c0863 EA |
572 | if (OutFile >= 0) |
573 | { | |
574 | close(OutFile); | |
575 | OutFile = -1; | |
576 | } | |
e672376b EA |
577 | return (st); |
578 | } | |
a97ecd0d | 579 | } |
629c0863 EA |
580 | else if (OutFile >= 0) |
581 | { | |
582 | syserr("callprog: setting stdout w/o forking"); | |
583 | exit(EX_SOFTWARE); | |
584 | } | |
a97ecd0d | 585 | |
629c0863 | 586 | /* set protection as appropriate */ |
a97ecd0d EA |
587 | if (bitset(REALUSER, flags)) |
588 | setuid(getuid()); | |
a97ecd0d | 589 | |
629c0863 EA |
590 | /* change standard input & output if needed */ |
591 | if (OutFile >= 0) | |
592 | { | |
593 | close(1); | |
594 | dup(OutFile); | |
595 | close(OutFile); | |
596 | } | |
597 | ||
598 | /* call real SCCS program */ | |
4535945e | 599 | execv(progpath, argv); |
d266e8cb | 600 | syserr("cannot execute %s", progpath); |
1cc2dcec EA |
601 | exit(EX_UNAVAILABLE); |
602 | } | |
2d351698 EA |
603 | \f |
604 | /* | |
e2758dc3 EA |
605 | ** MAKEFILE -- make filename of SCCS file |
606 | ** | |
607 | ** If the name passed is already the name of an SCCS file, | |
608 | ** just return it. Otherwise, munge the name into the name | |
609 | ** of the actual SCCS file. | |
610 | ** | |
611 | ** There are cases when it is not clear what you want to | |
612 | ** do. For example, if SccsPath is an absolute pathname | |
613 | ** and the name given is also an absolute pathname, we go | |
614 | ** for SccsPath (& only use the last component of the name | |
615 | ** passed) -- this is important for security reasons (if | |
616 | ** sccs is being used as a setuid front end), but not | |
617 | ** particularly intuitive. | |
618 | ** | |
619 | ** Parameters: | |
620 | ** name -- the file name to be munged. | |
621 | ** | |
622 | ** Returns: | |
623 | ** The pathname of the sccs file. | |
624 | ** NULL on error. | |
625 | ** | |
626 | ** Side Effects: | |
627 | ** none. | |
628 | */ | |
1cc2dcec EA |
629 | |
630 | char * | |
631 | makefile(name) | |
632 | char *name; | |
633 | { | |
634 | register char *p; | |
635 | register char c; | |
636 | char buf[512]; | |
1cc2dcec | 637 | extern char *malloc(); |
e2758dc3 | 638 | extern char *rindex(); |
8e7b9e7e EA |
639 | extern bool isdir(); |
640 | register char *q; | |
e2758dc3 EA |
641 | |
642 | p = rindex(name, '/'); | |
643 | if (p == NULL) | |
644 | p = name; | |
645 | else | |
646 | p++; | |
1cc2dcec EA |
647 | |
648 | /* | |
8e7b9e7e | 649 | ** See if the name can be used as-is. |
1cc2dcec EA |
650 | */ |
651 | ||
8e7b9e7e EA |
652 | if (SccsPath[0] != '/' || name[0] == '/' || strncmp(name, "./", 2) == 0) |
653 | { | |
654 | if (strncmp(p, "s.", 2) == 0) | |
655 | return (name); | |
656 | if (isdir(name)) | |
657 | return (name); | |
658 | } | |
e2758dc3 EA |
659 | |
660 | /* | |
8e7b9e7e | 661 | ** Create the actual pathname. |
e2758dc3 EA |
662 | */ |
663 | ||
e1e64d36 | 664 | /* first the directory part */ |
8e7b9e7e | 665 | if (name[0] != '/') |
1cc2dcec | 666 | { |
02ec3e87 | 667 | strcpy(buf, SccsDir); |
e2758dc3 EA |
668 | strcat(buf, "/"); |
669 | } | |
670 | else | |
671 | strcpy(buf, ""); | |
e1e64d36 EA |
672 | |
673 | /* then the head of the pathname */ | |
8e7b9e7e EA |
674 | strncat(buf, name, p - name); |
675 | q = &buf[strlen(buf)]; | |
676 | strcpy(q, p); | |
677 | if (strncmp(p, "s.", 2) != 0 && !isdir(buf)) | |
e2758dc3 | 678 | { |
e1e64d36 | 679 | /* sorry, no; copy the SCCS pathname & the "s." */ |
02ec3e87 EA |
680 | strcpy(q, SccsPath); |
681 | strcat(buf, "/s."); | |
e1e64d36 EA |
682 | |
683 | /* and now the end of the name */ | |
e2758dc3 EA |
684 | strcat(buf, p); |
685 | } | |
1cc2dcec | 686 | |
e1e64d36 | 687 | /* if i haven't changed it, why did I do all this? */ |
02ec3e87 EA |
688 | if (strcmp(buf, name) == 0) |
689 | p = name; | |
690 | ||
691 | return (stat(name, &stbuf) >= 0 && (stbuf.st_mode & S_IFMT) == S_IFDIR); | |
1cc2dcec | 692 | } |
399058e3 | 693 | \f/* |
8e7b9e7e EA |
694 | ** ISDIR -- return true if the argument is a directory. |
695 | ** | |
696 | ** Parameters: | |
697 | ** name -- the pathname of the file to check. | |
698 | ** | |
699 | ** Returns: | |
700 | ** TRUE if 'name' is a directory, FALSE otherwise. | |
701 | ** | |
702 | ** Side Effects: | |
703 | ** none. | |
704 | */ | |
705 | ||
706 | bool | |
707 | isdir(name) | |
708 | char *name; | |
709 | { | |
710 | struct stat stbuf; | |
711 | ||
712 | return (stat(name, &stbuf) >= 0 && (stbuf.st_mode & S_IFMT) == S_IFDIR); | |
713 | } | |
2d351698 EA |
714 | \f |
715 | /* | |
e2758dc3 EA |
716 | ** SAFEPATH -- determine whether a pathname is "safe" |
717 | ** | |
718 | ** "Safe" pathnames only allow you to get deeper into the | |
719 | ** directory structure, i.e., full pathnames and ".." are | |
720 | ** not allowed. | |
721 | ** | |
722 | ** Parameters: | |
723 | ** p -- the name to check. | |
724 | ** | |
725 | ** Returns: | |
726 | ** TRUE -- if the path is safe. | |
727 | ** FALSE -- if the path is not safe. | |
728 | ** | |
729 | ** Side Effects: | |
730 | ** Prints a message if the path is not safe. | |
731 | */ | |
732 | ||
733 | bool | |
734 | safepath(p) | |
735 | register char *p; | |
736 | { | |
737 | extern char *index(); | |
738 | ||
739 | if (*p != '/') | |
740 | { | |
741 | while (strncmp(p, "../", 3) != 0 && strcmp(p, "..") != 0) | |
742 | { | |
743 | p = index(p, '/'); | |
744 | if (p == NULL) | |
745 | return (TRUE); | |
746 | p++; | |
747 | } | |
748 | } | |
749 | ||
750 | printf("You may not use full pathnames or \"..\"\n"); | |
751 | return (FALSE); | |
752 | } | |
2d351698 EA |
753 | \f |
754 | /* | |
399058e3 EA |
755 | ** CLEAN -- clean out recreatable files |
756 | ** | |
757 | ** Any file for which an "s." file exists but no "p." file | |
758 | ** exists in the current directory is purged. | |
759 | ** | |
760 | ** Parameters: | |
89819fbe EA |
761 | ** tells whether this came from a "clean", "info", or |
762 | ** "check" command. | |
399058e3 EA |
763 | ** |
764 | ** Returns: | |
765 | ** none. | |
766 | ** | |
767 | ** Side Effects: | |
89819fbe EA |
768 | ** Removes files in the current directory. |
769 | ** Prints information regarding files being edited. | |
770 | ** Exits if a "check" command. | |
399058e3 EA |
771 | */ |
772 | ||
89819fbe EA |
773 | clean(mode) |
774 | int mode; | |
399058e3 EA |
775 | { |
776 | struct direct dir; | |
777 | struct stat stbuf; | |
778 | char buf[100]; | |
bb9b2f29 | 779 | char pline[120]; |
db4904e0 EA |
780 | register FILE *dirfd; |
781 | register char *basefile; | |
d7f27f60 | 782 | bool gotedit; |
bb9b2f29 | 783 | FILE *pfp; |
399058e3 | 784 | |
e1e64d36 EA |
785 | /* |
786 | ** Find and open the SCCS directory. | |
787 | */ | |
788 | ||
0c925940 EA |
789 | strcpy(buf, SccsDir); |
790 | if (buf[0] != '\0') | |
791 | strcat(buf, "/"); | |
792 | strcat(buf, SccsPath); | |
e1e64d36 | 793 | |
0c925940 | 794 | dirfd = fopen(buf, "r"); |
399058e3 EA |
795 | if (dirfd == NULL) |
796 | { | |
0c925940 | 797 | usrerr("cannot open %s", buf); |
e8a6a730 | 798 | return (EX_NOINPUT); |
399058e3 EA |
799 | } |
800 | ||
801 | /* | |
802 | ** Scan the SCCS directory looking for s. files. | |
e1e64d36 EA |
803 | ** gotedit tells whether we have tried to clean any |
804 | ** files that are being edited. | |
399058e3 EA |
805 | */ |
806 | ||
d7f27f60 | 807 | gotedit = FALSE; |
399058e3 EA |
808 | while (fread(&dir, sizeof dir, 1, dirfd) != NULL) |
809 | { | |
b8d1a34d | 810 | if (dir.d_ino == 0 || strncmp(dir.d_name, "s.", 2) != 0) |
399058e3 EA |
811 | continue; |
812 | ||
813 | /* got an s. file -- see if the p. file exists */ | |
0c925940 EA |
814 | strcpy(buf, SccsDir); |
815 | if (buf[0] != '\0') | |
816 | strcat(buf, "/"); | |
817 | strcat(buf, SccsPath); | |
399058e3 | 818 | strcat(buf, "/p."); |
db4904e0 | 819 | basefile = &buf[strlen(buf)]; |
b8d1a34d | 820 | strncpy(basefile, &dir.d_name[2], sizeof dir.d_name - 2); |
bb9b2f29 EA |
821 | basefile[sizeof dir.d_name - 2] = '\0'; |
822 | pfp = fopen(buf, "r"); | |
823 | if (pfp != NULL) | |
db4904e0 | 824 | { |
e1e64d36 | 825 | /* the file exists -- report it's contents */ |
bb9b2f29 | 826 | while (fgets(pline, sizeof pline, pfp) != NULL) |
fdca7108 | 827 | printf("%12s: being edited: %s", basefile, pline); |
bb9b2f29 | 828 | fclose(pfp); |
d7f27f60 | 829 | gotedit = TRUE; |
399058e3 | 830 | continue; |
db4904e0 | 831 | } |
399058e3 EA |
832 | |
833 | /* the s. file exists and no p. file exists -- unlink the g-file */ | |
89819fbe | 834 | if (mode == CLEANC) |
db4904e0 | 835 | { |
b8d1a34d | 836 | strncpy(buf, &dir.d_name[2], sizeof dir.d_name - 2); |
db4904e0 EA |
837 | buf[sizeof dir.d_name - 2] = '\0'; |
838 | unlink(buf); | |
839 | } | |
399058e3 EA |
840 | } |
841 | ||
e1e64d36 | 842 | /* cleanup & report results */ |
399058e3 | 843 | fclose(dirfd); |
89819fbe | 844 | if (!gotedit && mode == INFOC) |
fdca7108 | 845 | printf("Nothing being edited\n"); |
89819fbe EA |
846 | if (mode == CHECKC) |
847 | exit(gotedit); | |
e8a6a730 | 848 | return (EX_OK); |
399058e3 | 849 | } |
2d351698 EA |
850 | \f |
851 | /* | |
61886f2a EA |
852 | ** UNEDIT -- unedit a file |
853 | ** | |
854 | ** Checks to see that the current user is actually editting | |
855 | ** the file and arranges that s/he is not editting it. | |
856 | ** | |
857 | ** Parameters: | |
fdca7108 | 858 | ** fn -- the name of the file to be unedited. |
61886f2a EA |
859 | ** |
860 | ** Returns: | |
9c3bf134 EA |
861 | ** TRUE -- if the file was successfully unedited. |
862 | ** FALSE -- if the file was not unedited for some | |
863 | ** reason. | |
61886f2a EA |
864 | ** |
865 | ** Side Effects: | |
866 | ** fn is removed | |
867 | ** entries are removed from pfile. | |
868 | */ | |
869 | ||
9c3bf134 | 870 | bool |
61886f2a EA |
871 | unedit(fn) |
872 | char *fn; | |
873 | { | |
874 | register FILE *pfp; | |
875 | char *pfn; | |
876 | static char tfn[] = "/tmp/sccsXXXXX"; | |
877 | FILE *tfp; | |
878 | register char *p; | |
879 | register char *q; | |
880 | bool delete = FALSE; | |
881 | bool others = FALSE; | |
882 | char *myname; | |
883 | extern char *getlogin(); | |
884 | struct pfile *pent; | |
885 | extern struct pfile *getpfile(); | |
886 | char buf[120]; | |
1dbb3fe7 | 887 | extern char *makefile(); |
27e713f7 EA |
888 | # ifdef UIDUSER |
889 | struct passwd *pw; | |
890 | extern struct passwd *getpwuid(); | |
891 | # endif UIDUSER | |
61886f2a EA |
892 | |
893 | /* make "s." filename & find the trailing component */ | |
894 | pfn = makefile(fn); | |
e2758dc3 EA |
895 | if (pfn == NULL) |
896 | return (FALSE); | |
897 | q = rindex(pfn, '/'); | |
898 | if (q == NULL) | |
899 | q = &pfn[-1]; | |
900 | if (q[1] != 's' || q[2] != '.') | |
61886f2a | 901 | { |
d266e8cb | 902 | usrerr("bad file name \"%s\"", fn); |
9c3bf134 | 903 | return (FALSE); |
61886f2a EA |
904 | } |
905 | ||
e1e64d36 | 906 | /* turn "s." into "p." & try to open it */ |
61886f2a EA |
907 | *++q = 'p'; |
908 | ||
909 | pfp = fopen(pfn, "r"); | |
910 | if (pfp == NULL) | |
911 | { | |
fdca7108 | 912 | printf("%12s: not being edited\n", fn); |
9c3bf134 | 913 | return (FALSE); |
61886f2a EA |
914 | } |
915 | ||
e1e64d36 | 916 | /* create temp file for editing p-file */ |
61886f2a EA |
917 | mktemp(tfn); |
918 | tfp = fopen(tfn, "w"); | |
919 | if (tfp == NULL) | |
920 | { | |
d266e8cb | 921 | usrerr("cannot create \"%s\"", tfn); |
61886f2a EA |
922 | exit(EX_OSERR); |
923 | } | |
924 | ||
e1e64d36 | 925 | /* figure out who I am */ |
27e713f7 EA |
926 | # ifdef UIDUSER |
927 | pw = getpwuid(getuid()); | |
928 | if (pw == NULL) | |
929 | { | |
d266e8cb | 930 | syserr("who are you? (uid=%d)", getuid()); |
27e713f7 EA |
931 | exit(EX_OSERR); |
932 | } | |
933 | myname = pw->pw_name; | |
934 | # else | |
61886f2a | 935 | myname = getlogin(); |
27e713f7 | 936 | # endif UIDUSER |
e1e64d36 EA |
937 | |
938 | /* | |
939 | ** Copy p-file to temp file, doing deletions as needed. | |
940 | */ | |
941 | ||
61886f2a EA |
942 | while ((pent = getpfile(pfp)) != NULL) |
943 | { | |
944 | if (strcmp(pent->p_user, myname) == 0) | |
945 | { | |
946 | /* a match */ | |
947 | delete++; | |
948 | } | |
949 | else | |
950 | { | |
e1e64d36 | 951 | /* output it again */ |
61886f2a EA |
952 | fprintf(tfp, "%s %s %s %s %s\n", pent->p_osid, |
953 | pent->p_nsid, pent->p_user, pent->p_date, | |
954 | pent->p_time); | |
955 | others++; | |
956 | } | |
957 | } | |
958 | ||
959 | /* do final cleanup */ | |
960 | if (others) | |
961 | { | |
e1e64d36 | 962 | /* copy it back (perhaps it should be linked?) */ |
61886f2a EA |
963 | if (freopen(tfn, "r", tfp) == NULL) |
964 | { | |
d266e8cb | 965 | syserr("cannot reopen \"%s\"", tfn); |
61886f2a EA |
966 | exit(EX_OSERR); |
967 | } | |
968 | if (freopen(pfn, "w", pfp) == NULL) | |
969 | { | |
d266e8cb | 970 | usrerr("cannot create \"%s\"", pfn); |
9c3bf134 | 971 | return (FALSE); |
61886f2a EA |
972 | } |
973 | while (fgets(buf, sizeof buf, tfp) != NULL) | |
974 | fputs(buf, pfp); | |
975 | } | |
976 | else | |
977 | { | |
e1e64d36 | 978 | /* it's empty -- remove it */ |
61886f2a EA |
979 | unlink(pfn); |
980 | } | |
981 | fclose(tfp); | |
982 | fclose(pfp); | |
983 | unlink(tfn); | |
984 | ||
e1e64d36 | 985 | /* actually remove the g-file */ |
61886f2a EA |
986 | if (delete) |
987 | { | |
4cd62a3c EA |
988 | unlink(tail(fn)); |
989 | printf("%12s: removed\n", tail(fn)); | |
9c3bf134 | 990 | return (TRUE); |
61886f2a EA |
991 | } |
992 | else | |
993 | { | |
fdca7108 | 994 | printf("%12s: not being edited by you\n", fn); |
9c3bf134 | 995 | return (FALSE); |
61886f2a EA |
996 | } |
997 | } | |
2d351698 | 998 | \f |
629c0863 EA |
999 | /* |
1000 | ** DODIFF -- diff an s-file against a g-file | |
1001 | ** | |
1002 | ** Parameters: | |
1003 | ** getv -- argv for the 'get' command. | |
1004 | ** gfile -- name of the g-file to diff against. | |
1005 | ** | |
1006 | ** Returns: | |
1007 | ** Result of get. | |
1008 | ** | |
1009 | ** Side Effects: | |
1010 | ** none. | |
1011 | */ | |
1012 | ||
1013 | dodiff(getv, gfile) | |
1014 | char **getv; | |
1015 | char *gfile; | |
1016 | { | |
1017 | int pipev[2]; | |
1018 | int rval; | |
1019 | register int i; | |
1020 | register int pid; | |
1021 | auto int st; | |
1022 | extern int errno; | |
1023 | int (*osig)(); | |
1024 | ||
d597ad9e EA |
1025 | printf("\n------- %s -------\n", gfile); |
1026 | ||
e1e64d36 | 1027 | /* create context for diff to run in */ |
629c0863 EA |
1028 | if (pipe(pipev) < 0) |
1029 | { | |
1030 | syserr("dodiff: pipe failed"); | |
1031 | exit(EX_OSERR); | |
1032 | } | |
1033 | if ((pid = fork()) < 0) | |
1034 | { | |
1035 | syserr("dodiff: fork failed"); | |
1036 | exit(EX_OSERR); | |
1037 | } | |
1038 | else if (pid > 0) | |
1039 | { | |
1040 | /* in parent; run get */ | |
1041 | OutFile = pipev[1]; | |
1042 | close(pipev[0]); | |
1043 | rval = command(&getv[1], TRUE, FALSE, "get -s -k -p"); | |
1044 | osig = signal(SIGINT, SIG_IGN); | |
1045 | while (((i = wait(&st)) >= 0 && i != pid) || errno == EINTR) | |
1046 | errno = 0; | |
1047 | signal(SIGINT, osig); | |
1048 | /* ignore result of diff */ | |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | /* in child, run diff */ | |
1053 | if (close(pipev[1]) < 0 || close(0) < 0 || | |
1054 | dup(pipev[0]) != 0 || close(pipev[0]) < 0) | |
1055 | { | |
1056 | syserr("dodiff: magic failed"); | |
1057 | exit(EX_OSERR); | |
1058 | } | |
1059 | execl(PROGPATH(bdiff), "bdiff", "-", gfile, NULL); | |
1060 | # ifndef V6 | |
1061 | execlp("bdiff", "bdiff", "-", gfile, NULL); | |
1062 | execlp("diff", "diff", "-", gfile, NULL); | |
1063 | # endif NOT V6 | |
1064 | syserr("bdiff: cannot execute"); | |
1065 | exit(EX_OSERR); | |
1066 | } | |
1067 | return (rval); | |
1068 | } | |
1069 | \f | |
4cd62a3c EA |
1070 | /* |
1071 | ** TAIL -- return tail of filename. | |
1072 | ** | |
1073 | ** Parameters: | |
1074 | ** fn -- the filename. | |
1075 | ** | |
1076 | ** Returns: | |
1077 | ** a pointer to the tail of the filename; e.g., given | |
1078 | ** "cmd/ls.c", "ls.c" is returned. | |
1079 | ** | |
1080 | ** Side Effects: | |
1081 | ** none. | |
1082 | */ | |
1083 | ||
1084 | char * | |
1085 | tail(fn) | |
1086 | register char *fn; | |
1087 | { | |
1088 | register char *p; | |
1089 | ||
1090 | for (p = fn; *p != 0; p++) | |
1091 | if (*p == '/' && p[1] != '\0' && p[1] != '/') | |
1092 | fn = &p[1]; | |
1093 | return (fn); | |
1094 | } | |
1095 | \f | |
2d351698 | 1096 | /* |
61886f2a EA |
1097 | ** GETPFILE -- get an entry from the p-file |
1098 | ** | |
1099 | ** Parameters: | |
1100 | ** pfp -- p-file file pointer | |
1101 | ** | |
1102 | ** Returns: | |
1103 | ** pointer to p-file struct for next entry | |
1104 | ** NULL on EOF or error | |
1105 | ** | |
1106 | ** Side Effects: | |
1107 | ** Each call wipes out results of previous call. | |
1108 | */ | |
1109 | ||
1110 | struct pfile * | |
1111 | getpfile(pfp) | |
1112 | FILE *pfp; | |
1113 | { | |
1114 | static struct pfile ent; | |
1115 | static char buf[120]; | |
1116 | register char *p; | |
1117 | extern char *nextfield(); | |
1118 | ||
1119 | if (fgets(buf, sizeof buf, pfp) == NULL) | |
1120 | return (NULL); | |
1121 | ||
1122 | ent.p_osid = p = buf; | |
1123 | ent.p_nsid = p = nextfield(p); | |
1124 | ent.p_user = p = nextfield(p); | |
1125 | ent.p_date = p = nextfield(p); | |
1126 | ent.p_time = p = nextfield(p); | |
1127 | if (p == NULL || nextfield(p) != NULL) | |
1128 | return (NULL); | |
1129 | ||
1130 | return (&ent); | |
1131 | } | |
1132 | ||
1133 | ||
1134 | char * | |
1135 | nextfield(p) | |
1136 | register char *p; | |
1137 | { | |
1138 | if (p == NULL || *p == '\0') | |
1139 | return (NULL); | |
1140 | while (*p != ' ' && *p != '\n' && *p != '\0') | |
1141 | p++; | |
1142 | if (*p == '\n' || *p == '\0') | |
1143 | { | |
1144 | *p = '\0'; | |
1145 | return (NULL); | |
1146 | } | |
1147 | *p++ = '\0'; | |
1148 | return (p); | |
1149 | } | |
2d351698 EA |
1150 | \f |
1151 | /* | |
d266e8cb EA |
1152 | ** USRERR -- issue user-level error |
1153 | ** | |
1154 | ** Parameters: | |
1155 | ** f -- format string. | |
1156 | ** p1-p3 -- parameters to a printf. | |
1157 | ** | |
1158 | ** Returns: | |
1159 | ** -1 | |
1160 | ** | |
1161 | ** Side Effects: | |
1162 | ** none. | |
1163 | */ | |
1164 | ||
1165 | usrerr(f, p1, p2, p3) | |
1166 | char *f; | |
1167 | { | |
1168 | fprintf(stderr, "\n%s: ", MyName); | |
1169 | fprintf(stderr, f, p1, p2, p3); | |
1170 | fprintf(stderr, "\n"); | |
1171 | ||
1172 | return (-1); | |
1173 | } | |
2d351698 EA |
1174 | \f |
1175 | /* | |
d266e8cb EA |
1176 | ** SYSERR -- print system-generated error. |
1177 | ** | |
1178 | ** Parameters: | |
1179 | ** f -- format string to a printf. | |
1180 | ** p1, p2, p3 -- parameters to f. | |
1181 | ** | |
1182 | ** Returns: | |
1183 | ** never. | |
1184 | ** | |
1185 | ** Side Effects: | |
1186 | ** none. | |
1187 | */ | |
1188 | ||
1189 | syserr(f, p1, p2, p3) | |
1190 | char *f; | |
1191 | { | |
1192 | extern int errno; | |
1193 | ||
1194 | fprintf(stderr, "\n%s SYSERR: ", MyName); | |
1195 | fprintf(stderr, f, p1, p2, p3); | |
1196 | fprintf(stderr, "\n"); | |
1197 | if (errno == 0) | |
1198 | exit(EX_SOFTWARE); | |
1199 | else | |
1200 | { | |
1201 | perror(0); | |
1202 | exit(EX_OSERR); | |
1203 | } | |
1204 | } |