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1.6 ! deraadt 1: /* $OpenBSD: logmsg.c,v 1.5 2004/12/03 19:01:02 jfb Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. The name of the author may not be used to endorse or promote products
13: * derived from this software without specific prior written permission.
14: *
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: #include <sys/types.h>
28: #include <sys/stat.h>
29:
30: #include <errno.h>
31: #include <stdio.h>
32: #include <stdlib.h>
33: #include <unistd.h>
34: #include <string.h>
35:
36: #include "cvs.h"
37: #include "log.h"
38: #include "buf.h"
1.2 jfb 39: #include "proto.h"
1.1 jfb 40:
41:
42: #define CVS_LOGMSG_BIGMSG 32000
43: #define CVS_LOGMSG_FTMPL "/tmp/cvsXXXXXXXXXX"
1.3 jfb 44: #define CVS_LOGMSG_PREFIX "CVS:"
1.1 jfb 45: #define CVS_LOGMSG_LOGLINE \
46: "----------------------------------------------------------------------"
47:
48:
49: /*
50: * cvs_logmsg_open()
51: *
52: * Open the file specified by <path> and allocate a buffer large enough to
53: * hold all of the file's contents. Lines starting with the log prefix
54: * are not included in the result.
55: * The returned value must later be free()d.
56: * Returns a pointer to the allocated buffer on success, or NULL on failure.
57: */
58:
59: char*
60: cvs_logmsg_open(const char *path)
61: {
62: int lcont;
63: size_t len;
64: char lbuf[256], *msg;
65: struct stat st;
66: FILE *fp;
67: BUF *bp;
68:
69: if (stat(path, &st) == -1) {
70: cvs_log(LP_ERRNO, "failed to stat `%s'", path);
71: return (NULL);
72: }
73:
74: if (!S_ISREG(st.st_mode)) {
75: cvs_log(LP_ERR, "message file must be a regular file");
76: return (NULL);
77: }
78:
79: if (st.st_size > CVS_LOGMSG_BIGMSG) {
80: do {
81: fprintf(stderr,
82: "The specified message file seems big. "
83: "Proceed anyways? (y/n) ");
84: if (fgets(lbuf, sizeof(lbuf), stdin) == NULL) {
85: cvs_log(LP_ERRNO,
86: "failed to read from standard input");
87: return (NULL);
88: }
89:
90: len = strlen(lbuf);
91: if ((len == 0) || (len > 2) ||
92: ((lbuf[0] != 'y') && (lbuf[0] != 'n'))) {
93: fprintf(stderr, "invalid input\n");
94: continue;
1.6 ! deraadt 95: } else if (lbuf[0] == 'y')
1.1 jfb 96: break;
97: else if (lbuf[0] == 'n') {
98: cvs_log(LP_ERR, "aborted by user");
99: return (NULL);
100: }
101:
102: } while (1);
103: }
104:
105: if ((fp = fopen(path, "r")) == NULL) {
106: cvs_log(LP_ERRNO, "failed to open message file `%s'", path);
107: return (NULL);
108: }
109:
110: bp = cvs_buf_alloc(128, BUF_AUTOEXT);
111: if (bp == NULL) {
112: return (NULL);
113: }
114:
115: /* lcont is used to tell if a buffer returned by fgets is a start
116: * of line or just line continuation because the buffer isn't
117: * large enough to hold the entire line.
118: */
119: lcont = 0;
120:
121: while (fgets(lbuf, sizeof(lbuf), fp) != NULL) {
122: len = strlen(lbuf);
123: if (len == 0)
124: continue;
1.3 jfb 125: else if ((lcont == 0) && (strncmp(lbuf, CVS_LOGMSG_PREFIX,
126: strlen(CVS_LOGMSG_PREFIX)) == 0))
1.1 jfb 127: /* skip lines starting with the prefix */
128: continue;
129:
130: cvs_buf_append(bp, lbuf, strlen(lbuf));
131:
132: lcont = (lbuf[len - 1] == '\n') ? 0 : 1;
133: }
134: cvs_buf_putc(bp, '\0');
135:
136: msg = (char *)cvs_buf_release(bp);
137:
138: return (msg);
139: }
140:
141:
142: /*
143: * cvs_logmsg_get()
144: *
145: * Get a log message by forking and executing the user's editor.
146: * Returns the message in a dynamically allocated string on success, NULL on
147: * failure.
148: */
149:
150: char*
1.3 jfb 151: cvs_logmsg_get(const char *dir, struct cvs_flist *files)
1.1 jfb 152: {
1.3 jfb 153: int ret, fd, argc, fds[3], nl;
154: size_t len, tlen;
155: char *argv[4], buf[16], path[MAXPATHLEN], fpath[MAXPATHLEN], *msg;
1.1 jfb 156: FILE *fp;
1.3 jfb 157: CVSFILE *cvsfp;
1.1 jfb 158: struct stat st1, st2;
159:
160: msg = NULL;
161: fds[0] = -1;
162: fds[1] = -1;
163: fds[2] = -1;
164: strlcpy(path, CVS_LOGMSG_FTMPL, sizeof(path));
165: argc = 0;
166: argv[argc++] = cvs_editor;
167: argv[argc++] = path;
168: argv[argc] = NULL;
169:
170: if ((fd = mkstemp(path)) == -1) {
171: cvs_log(LP_ERRNO, "failed to create temporary file");
172: return (NULL);
173: }
174:
175: fp = fdopen(fd, "w");
176: if (fp == NULL) {
177: cvs_log(LP_ERRNO, "failed to fdopen");
1.3 jfb 178: (void)close(fd);
179: if (unlink(path) == -1)
180: cvs_log(LP_ERRNO, "failed to unlink temporary file");
181: return (NULL);
1.1 jfb 182: } else {
183: fprintf(fp,
184: "\n%s %s\n%s Enter Log. Lines beginning with `%s' are "
185: "removed automatically\n%s\n%s Commiting in %s\n"
1.3 jfb 186: "%s\n",
187: CVS_LOGMSG_PREFIX, CVS_LOGMSG_LOGLINE,
188: CVS_LOGMSG_PREFIX, CVS_LOGMSG_PREFIX,
189: CVS_LOGMSG_PREFIX, CVS_LOGMSG_PREFIX,
190: dir, CVS_LOGMSG_PREFIX);
1.1 jfb 191:
192: /* XXX list files here */
1.3 jfb 193: fprintf(fp, "%s Modified Files:", CVS_LOGMSG_PREFIX);
194: nl = 1;
195: TAILQ_FOREACH(cvsfp, files, cf_list) {
196: /* take the space into account */
197: cvs_file_getpath(cvsfp, fpath, sizeof(fpath));
198: len = strlen(fpath) + 1;
199: if (tlen + len >= 72)
200: nl = 1;
201:
202: if (nl) {
203: fprintf(fp, "\n%s\t", CVS_LOGMSG_PREFIX);
204: tlen = 8;
205: nl = 0;
206: }
207:
208: fprintf(fp, " %s", fpath);
209: tlen += len;
210: }
1.1 jfb 211:
1.3 jfb 212: fprintf(fp, "\n%s %s\n", CVS_LOGMSG_PREFIX,
1.1 jfb 213: CVS_LOGMSG_LOGLINE);
214: }
215: (void)fflush(fp);
216:
217: if (fstat(fd, &st1) == -1) {
218: cvs_log(LP_ERRNO, "failed to stat log message file");
219:
220: (void)fclose(fp);
221: if (unlink(path) == -1)
222: cvs_log(LP_ERRNO, "failed to unlink log file %s", path);
223: return (NULL);
224: }
225:
226: for (;;) {
227: ret = cvs_exec(argc, argv, fds);
228: if (ret == -1)
229: break;
230: if (fstat(fd, &st2) == -1) {
231: cvs_log(LP_ERRNO, "failed to stat log message file");
232: break;
233: }
234:
235: if (st2.st_mtime != st1.st_mtime) {
236: msg = cvs_logmsg_open(path);
237: break;
238: }
239:
240: /* nothing was entered */
241: fprintf(stderr,
242: "Log message unchanged or not specified\na)bort, "
243: "c)ontinue, e)dit, !)reuse this message unchanged "
244: "for remaining dirs\nAction: (continue) ");
245:
246: if (fgets(buf, sizeof(buf), stdin) == NULL) {
247: cvs_log(LP_ERRNO, "failed to read from standard input");
248: break;
249: }
250:
251: len = strlen(buf);
252: if ((len == 0) || (len > 2)) {
253: fprintf(stderr, "invalid input\n");
254: continue;
1.6 ! deraadt 255: } else if (buf[0] == 'a') {
1.1 jfb 256: cvs_log(LP_ERR, "aborted by user");
257: break;
258: } else if ((buf[0] == '\n') || (buf[0] == 'c')) {
259: /* empty message */
260: msg = strdup("");
261: break;
262: } else if (ret == 'e')
263: continue;
264: else if (ret == '!') {
265: /* XXX do something */
266: }
267: }
268:
269: (void)fclose(fp);
270: (void)close(fd);
271:
272: if (unlink(path) == -1)
273: cvs_log(LP_ERRNO, "failed to unlink log file %s", path);
274:
275: return (msg);
1.2 jfb 276: }
277:
278:
279: /*
280: * cvs_logmsg_send()
281: *
282: */
283:
284: int
285: cvs_logmsg_send(struct cvsroot *root, const char *msg)
286: {
1.5 jfb 287: const char *mp;
288: char *np, buf[256];
1.2 jfb 289:
1.4 jfb 290: if (cvs_sendarg(root, "-m", 0) < 0)
291: return (-1);
1.2 jfb 292:
1.5 jfb 293: for (mp = msg; mp != NULL; mp = strchr(mp, '\n')) {
294: if (*mp == '\n')
295: mp++;
1.4 jfb 296:
297: /* XXX ghetto */
1.5 jfb 298: strlcpy(buf, mp, sizeof(buf));
299: np = strchr(buf, '\n');
300: if (np != NULL)
301: *np = '\0';
302: if (cvs_sendarg(root, buf, (mp == msg) ? 0 : 1) < 0)
1.2 jfb 303: return (-1);
304: }
305:
306: return (0);
1.1 jfb 307: }