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1.3 ! xsa 1: /* $OpenBSD: rcsutil.c,v 1.2 2006/04/24 04:51:57 ray Exp $ */
1.1 xsa 2: /*
3: * Copyright (c) 2005, 2006 Joris Vink <joris@openbsd.org>
4: * Copyright (c) 2006 Xavier Santolaria <xsa@openbsd.org>
5: * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org>
6: * Copyright (c) 2006 Ray Lai <ray@openbsd.org>
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: *
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. The name of the author may not be used to endorse or promote products
16: * derived from this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
19: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
20: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28: */
29:
30: #include "includes.h"
31:
32: #include "rcsprog.h"
33:
34: /*
35: * rcs_get_mtime()
36: *
37: * Get <filename> last modified time.
38: * Returns last modified time on success, or -1 on failure.
39: */
40: time_t
41: rcs_get_mtime(const char *filename)
42: {
43: struct stat st;
44: time_t mtime;
45:
46: if (stat(filename, &st) == -1) {
47: warn("%s", filename);
48: return (-1);
49: }
50: mtime = (time_t)st.st_mtimespec.tv_sec;
51:
52: return (mtime);
53: }
54:
55: /*
56: * rcs_set_mtime()
57: *
58: * Set <filename> last modified time to <mtime> if it's not set to -1.
59: */
60: void
61: rcs_set_mtime(const char *filename, time_t mtime)
62: {
63: static struct timeval tv[2];
64:
65: if (mtime == -1)
66: return;
67:
68: tv[0].tv_sec = mtime;
69: tv[1].tv_sec = tv[0].tv_sec;
70:
71: if (utimes(filename, tv) == -1)
1.3 ! xsa 72: err(1, "utimes");
1.1 xsa 73: }
74:
75: int
76: rcs_getopt(int argc, char **argv, const char *optstr)
77: {
78: char *a;
79: const char *c;
80: static int i = 1;
81: int opt, hasargument, ret;
82:
83: hasargument = 0;
84: rcs_optarg = NULL;
85:
86: if (i >= argc)
87: return (-1);
88:
89: a = argv[i++];
90: if (*a++ != '-')
91: return (-1);
92:
93: ret = 0;
94: opt = *a;
95: for (c = optstr; *c != '\0'; c++) {
96: if (*c == opt) {
97: a++;
98: ret = opt;
99:
100: if (*(c + 1) == ':') {
101: if (*(c + 2) == ':') {
102: if (*a != '\0')
103: hasargument = 1;
104: } else {
105: if (*a != '\0') {
106: hasargument = 1;
107: } else {
108: ret = 1;
109: break;
110: }
111: }
112: }
113:
114: if (hasargument == 1)
115: rcs_optarg = a;
116:
117: if (ret == opt)
118: rcs_optind++;
119: break;
120: }
121: }
122:
123: if (ret == 0)
124: warnx("unknown option -%c", opt);
125: else if (ret == 1)
126: warnx("missing argument for option -%c", opt);
127:
128: return (ret);
129: }
130:
131: /*
132: * rcs_choosefile()
133: *
134: * Given a relative filename, decide where the corresponding RCS file
135: * should be. Tries each extension until a file is found. If no file
136: * was found, returns a path with the first extension.
137: *
138: * Returns pointer to a char array on success, NULL on failure.
139: */
140: char *
141: rcs_choosefile(const char *filename)
142: {
143: struct stat sb;
144: char *p, *ext, name[MAXPATHLEN], *next, *ptr, rcsdir[MAXPATHLEN],
145: *ret, *suffixes, rcspath[MAXPATHLEN];
146:
147: /* If -x flag was not given, use default. */
148: if (rcs_suffixes == NULL)
149: rcs_suffixes = RCS_DEFAULT_SUFFIX;
150:
151: /*
152: * If `filename' contains a directory, `rcspath' contains that
153: * directory, including a trailing slash. Otherwise `rcspath'
154: * contains an empty string.
155: */
156: if (strlcpy(rcspath, filename, sizeof(rcspath)) >= sizeof(rcspath))
157: return (NULL);
158: /* If `/' is found, end string after `/'. */
159: if ((ptr = strrchr(rcspath, '/')) != NULL)
160: *(++ptr) = '\0';
161: else
162: rcspath[0] = '\0';
163:
164: /* Append RCS/ to `rcspath' if it exists. */
165: if (strlcpy(rcsdir, rcspath, sizeof(rcsdir)) >= sizeof(rcsdir) ||
166: strlcat(rcsdir, RCSDIR, sizeof(rcsdir)) >= sizeof(rcsdir))
167: return (NULL);
168: if (stat(rcsdir, &sb) == 0 && (sb.st_mode & S_IFDIR))
169: if (strlcpy(rcspath, rcsdir, sizeof(rcspath)) >= sizeof(rcspath) ||
170: strlcat(rcspath, "/", sizeof(rcspath)) >= sizeof(rcspath))
171: return (NULL);
172:
173: /* Name of file without path. */
174: if ((ptr = strrchr(filename, '/')) == NULL) {
175: if (strlcpy(name, filename, sizeof(name)) >= sizeof(name))
176: return (NULL);
177: } else {
178: /* Skip `/'. */
179: if (strlcpy(name, ptr + 1, sizeof(name)) >= sizeof(name))
180: return (NULL);
181: }
182:
183: /* Name of RCS file without an extension. */
184: if (strlcat(rcspath, name, sizeof(rcspath)) >= sizeof(rcspath))
185: return (NULL);
186:
187: /*
188: * If only the empty suffix was given, use existing rcspath.
189: * This ensures that there is at least one suffix for strsep().
190: */
191: if (strcmp(rcs_suffixes, "") == 0) {
192: ret = xstrdup(rcspath);
193: return (ret);
194: }
195:
196: /*
197: * Cycle through slash-separated `rcs_suffixes', appending each
198: * extension to `rcspath' and testing if the file exists. If it
199: * does, return that string. Otherwise return path with first
200: * extension.
201: */
202: suffixes = xstrdup(rcs_suffixes);
203: for (ret = NULL, next = suffixes; (ext = strsep(&next, "/")) != NULL;) {
204: char fpath[MAXPATHLEN];
205:
206: if ((p = strrchr(rcspath, ',')) != NULL) {
207: if (!strcmp(p, ext)) {
208: if (stat(rcspath, &sb) == 0) {
209: ret = xstrdup(rcspath);
210: goto out;
211: }
212: }
213:
214: continue;
215: }
216:
217: /* Construct RCS file path. */
218: if (strlcpy(fpath, rcspath, sizeof(fpath)) >= sizeof(fpath) ||
219: strlcat(fpath, ext, sizeof(fpath)) >= sizeof(fpath))
220: goto out;
221:
222: /* Don't use `filename' as RCS file. */
223: if (strcmp(fpath, filename) == 0)
224: continue;
225:
226: if (stat(fpath, &sb) == 0) {
227: ret = xstrdup(fpath);
228: goto out;
229: }
230: }
231:
232: /*
233: * `ret' is still NULL. No RCS file with any extension exists
234: * so we use the first extension.
235: *
236: * `suffixes' should now be NUL separated, so the first
237: * extension can be read just by reading `suffixes'.
238: */
239: if (strlcat(rcspath, suffixes, sizeof(rcspath)) >=
240: sizeof(rcspath))
241: goto out;
242: ret = xstrdup(rcspath);
243:
244: out:
245: /* `ret' may be NULL, which indicates an error. */
246: xfree(suffixes);
247: return (ret);
248: }
249:
250: /*
251: * Find the name of an RCS file, given a file name `fname'. If an RCS
252: * file is found, the name is copied to the `len' sized buffer `out'.
253: * Returns 0 if RCS file was found, -1 otherwise.
254: */
255: int
256: rcs_statfile(char *fname, char *out, size_t len, int flags)
257: {
258: struct stat st;
259: char *rcspath;
260:
261: if ((rcspath = rcs_choosefile(fname)) == NULL)
1.3 ! xsa 262: errx(1, "rcs_statfile: path truncation");
1.1 xsa 263:
264: /* Error out if file not found and we are not creating one. */
265: if (stat(rcspath, &st) == -1 && !(flags & RCS_CREATE)) {
266: if (strcmp(__progname, "rcsclean") != 0 &&
267: strcmp(__progname, "ci") != 0)
268: warn("%s", rcspath);
269: xfree(rcspath);
270: return (-1);
271: }
272:
273: if (strlcpy(out, rcspath, len) >= len)
1.3 ! xsa 274: errx(1, "rcs_statfile: path truncation");
1.1 xsa 275:
276: xfree(rcspath);
277:
278: return (0);
279: }
280:
281: /*
282: * Allocate an RCSNUM and store in <rev>.
283: */
284: void
285: rcs_set_rev(const char *str, RCSNUM **rev)
286: {
287: if (str == NULL || (*rev = rcsnum_parse(str)) == NULL)
1.3 ! xsa 288: errx(1, "bad revision number '%s'", str);
1.1 xsa 289: }
290:
291: /*
292: * Set <str> to <new_str>. Print warning if <str> is redefined.
293: */
294: void
295: rcs_setrevstr(char **str, char *new_str)
296: {
297: if (new_str == NULL)
298: return;
299: if (*str != NULL)
300: warnx("redefinition of revision number");
301: *str = new_str;
302: }
303:
304: /*
305: * Set <str1> or <str2> to <new_str>, depending on which is not set.
306: * If both are set, error out.
307: */
308: void
309: rcs_setrevstr2(char **str1, char **str2, char *new_str)
310: {
311: if (new_str == NULL)
312: return;
313: if (*str1 == NULL)
314: *str1 = new_str;
315: else if (*str2 == NULL)
316: *str2 = new_str;
317: else
1.3 ! xsa 318: errx(1, "too many revision numbers");
1.1 xsa 319: }
320:
321: /*
322: * Get revision from file. The revision can be specified as a symbol or
323: * a revision number.
324: */
325: RCSNUM *
326: rcs_getrevnum(const char *rev_str, RCSFILE *file)
327: {
328: RCSNUM *rev;
329:
330: /* Search for symbol. */
331: rev = rcs_sym_getrev(file, rev_str);
332:
333: /* Search for revision number. */
334: if (rev == NULL)
335: rev = rcsnum_parse(rev_str);
336:
337: return (rev);
338: }
339:
340: /*
341: * Prompt for and store user's input in an allocated string.
342: *
343: * Returns the string's pointer.
344: */
345: char *
346: rcs_prompt(const char *prompt)
347: {
348: BUF *bp;
349: size_t len;
350: char *buf;
351:
352: bp = cvs_buf_alloc(0, BUF_AUTOEXT);
353: if (isatty(STDIN_FILENO))
354: (void)fprintf(stderr, "%s", prompt);
355: if (isatty(STDIN_FILENO))
356: (void)fprintf(stderr, ">> ");
357: while ((buf = fgetln(stdin, &len)) != NULL) {
358: /* The last line may not be EOL terminated. */
359: if (buf[0] == '.' && (len == 1 || buf[1] == '\n'))
360: break;
361: else
362: cvs_buf_append(bp, buf, len);
363:
364: if (isatty(STDIN_FILENO))
365: (void)fprintf(stderr, ">> ");
366: }
367: cvs_buf_putc(bp, '\0');
368:
369: return (cvs_buf_release(bp));
370: }
371:
372: u_int
373: rcs_rev_select(RCSFILE *file, char *range)
374: {
375: int i;
376: u_int nrev;
377: char *ep;
378: char *lstr, *rstr;
379: struct rcs_delta *rdp;
380: struct cvs_argvector *revargv, *revrange;
381: RCSNUM lnum, rnum;
382:
383: nrev = 0;
384: (void)memset(&lnum, 0, sizeof(lnum));
385: (void)memset(&rnum, 0, sizeof(rnum));
386:
387: if (range == NULL) {
388: TAILQ_FOREACH(rdp, &file->rf_delta, rd_list)
389: if (rcsnum_cmp(rdp->rd_num, file->rf_head, 0) == 0) {
390: rdp->rd_flags |= RCS_RD_SELECT;
391: return (1);
392: }
393: return (0);
394: }
395:
396: revargv = cvs_strsplit(range, ",");
397: for (i = 0; revargv->argv[i] != NULL; i++) {
398: revrange = cvs_strsplit(revargv->argv[i], ":");
399: if (revrange->argv[0] == NULL)
400: /* should not happen */
1.3 ! xsa 401: errx(1, "invalid revision range: %s", revargv->argv[i]);
1.1 xsa 402: else if (revrange->argv[1] == NULL)
403: lstr = rstr = revrange->argv[0];
404: else {
405: if (revrange->argv[2] != NULL)
1.3 ! xsa 406: errx(1, "invalid revision range: %s",
! 407: revargv->argv[i]);
1.1 xsa 408: lstr = revrange->argv[0];
409: rstr = revrange->argv[1];
410: if (strcmp(lstr, "") == 0)
411: lstr = NULL;
412: if (strcmp(rstr, "") == 0)
413: rstr = NULL;
414: }
415:
416: if (lstr == NULL)
417: lstr = RCS_HEAD_INIT;
418: if (rcsnum_aton(lstr, &ep, &lnum) == 0 || (*ep != '\0'))
1.3 ! xsa 419: errx(1, "invalid revision: %s", lstr);
1.1 xsa 420:
421: if (rstr != NULL) {
422: if (rcsnum_aton(rstr, &ep, &rnum) == 0 || (*ep != '\0'))
1.3 ! xsa 423: errx(1, "invalid revision: %s", rstr);
1.1 xsa 424: } else
425: rcsnum_cpy(file->rf_head, &rnum, 0);
426:
427: cvs_argv_destroy(revrange);
428:
429: TAILQ_FOREACH(rdp, &file->rf_delta, rd_list)
430: if (rcsnum_cmp(rdp->rd_num, &lnum, 0) <= 0 &&
431: rcsnum_cmp(rdp->rd_num, &rnum, 0) >= 0 &&
432: !(rdp->rd_flags & RCS_RD_SELECT)) {
433: rdp->rd_flags |= RCS_RD_SELECT;
434: nrev++;
435: }
436: }
437: cvs_argv_destroy(revargv);
438:
439: if (lnum.rn_id != NULL)
440: xfree(lnum.rn_id);
441: if (rnum.rn_id != NULL)
442: xfree(rnum.rn_id);
443:
444: return (nrev);
1.2 ray 445: }
446:
447: /*
448: * Load description from <in> to <file>.
449: * If <in> starts with a `-', <in> is taken as the description.
450: * Otherwise <in> is the name of the file containing the description.
451: * If <in> is NULL, the description is read from stdin.
452: */
453: void
454: rcs_set_description(RCSFILE *file, const char *in)
455: {
456: BUF *bp;
457: char *content;
458: const char *prompt =
459: "enter description, terminated with single '.' or end of file:\n"
460: "NOTE: This is NOT the log message!\n";
461:
462: /* Description is in file <in>. */
463: if (in != NULL && *in != '-') {
464: bp = cvs_buf_load(in, BUF_AUTOEXT);
465: cvs_buf_putc(bp, '\0');
466: content = cvs_buf_release(bp);
467: /* Description is in <in>. */
468: } else if (in != NULL)
469: /* Skip leading `-'. */
470: content = xstrdup(in + 1);
471: /* Get description from stdin. */
472: else
473: content = rcs_prompt(prompt);
474:
475: rcs_desc_set(file, content);
476: xfree(content);
1.1 xsa 477: }