Annotation of src/usr.bin/mail/edit.c, Revision 1.12
1.12 ! millert 1: /* $OpenBSD: edit.c,v 1.11 2001/11/21 15:26:39 millert Exp $ */
1.2 deraadt 2: /* $NetBSD: edit.c,v 1.5 1996/06/08 19:48:20 christos Exp $ */
3:
1.1 deraadt 4: /*
5: * Copyright (c) 1980, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.12 ! millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
1.2 deraadt 34: #if 0
1.11 millert 35: static const char sccsid[] = "@(#)edit.c 8.1 (Berkeley) 6/6/93";
1.2 deraadt 36: #else
1.12 ! millert 37: static const char rcsid[] = "$OpenBSD: edit.c,v 1.11 2001/11/21 15:26:39 millert Exp $";
1.2 deraadt 38: #endif
1.1 deraadt 39: #endif /* not lint */
40:
41: #include "rcv.h"
42: #include <fcntl.h>
43: #include "extern.h"
44:
45: /*
46: * Mail -- a mail program
47: *
48: * Perform message editing functions.
49: */
50:
51: /*
52: * Edit a message list.
53: */
54: int
1.11 millert 55: editor(void *v)
1.1 deraadt 56: {
1.2 deraadt 57: int *msgvec = v;
1.1 deraadt 58:
1.3 millert 59: return(edit1(msgvec, 'e'));
1.1 deraadt 60: }
61:
62: /*
63: * Invoke the visual editor on a message list.
64: */
65: int
1.11 millert 66: visual(void *v)
1.1 deraadt 67: {
1.2 deraadt 68: int *msgvec = v;
1.1 deraadt 69:
1.3 millert 70: return(edit1(msgvec, 'v'));
1.1 deraadt 71: }
72:
73: /*
74: * Edit a message by writing the message into a funnily-named file
75: * (which should not exist) and forking an editor on it.
76: * We get the editor from the stuff above.
77: */
78: int
1.11 millert 79: edit1(int *msgvec, int type)
1.1 deraadt 80: {
1.7 millert 81: int c, i;
1.1 deraadt 82: FILE *fp;
1.10 millert 83: struct sigaction oact;
84: sigset_t oset;
1.7 millert 85: struct message *mp;
1.1 deraadt 86: off_t size;
87:
88: /*
89: * Deal with each message to be edited . . .
90: */
91: for (i = 0; msgvec[i] && i < msgCount; i++) {
92: if (i > 0) {
93: char buf[100];
94: char *p;
95:
96: printf("Edit message %d [ynq]? ", msgvec[i]);
1.3 millert 97: if (fgets(buf, sizeof(buf), stdin) == 0)
1.1 deraadt 98: break;
99: for (p = buf; *p == ' ' || *p == '\t'; p++)
100: ;
101: if (*p == 'q')
102: break;
103: if (*p == 'n')
104: continue;
105: }
106: dot = mp = &message[msgvec[i] - 1];
107: touch(mp);
1.10 millert 108: (void)ignoresig(SIGINT, &oact, &oset);
1.1 deraadt 109: fp = run_editor(setinput(mp), mp->m_size, type, readonly);
110: if (fp != NULL) {
1.4 millert 111: (void)fseek(otf, 0L, 2);
1.1 deraadt 112: size = ftell(otf);
113: mp->m_block = blockof(size);
114: mp->m_offset = offsetof(size);
115: mp->m_size = fsize(fp);
116: mp->m_lines = 0;
117: mp->m_flag |= MODIFY;
118: rewind(fp);
119: while ((c = getc(fp)) != EOF) {
120: if (c == '\n')
121: mp->m_lines++;
122: if (putc(c, otf) == EOF)
123: break;
124: }
125: if (ferror(otf))
1.3 millert 126: warn("/tmp");
127: (void)Fclose(fp);
1.1 deraadt 128: }
1.10 millert 129: (void)sigprocmask(SIG_SETMASK, &oset, NULL);
130: (void)sigaction(SIGINT, &oact, NULL);
1.1 deraadt 131: }
1.3 millert 132: return(0);
1.1 deraadt 133: }
134:
135: /*
136: * Run an editor on the file at "fpp" of "size" bytes,
137: * and return a new file pointer.
138: * Signals must be handled by the caller.
139: * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI.
140: */
141: FILE *
1.11 millert 142: run_editor(FILE *fp, off_t size, int type, int readonly)
1.1 deraadt 143: {
1.7 millert 144: FILE *nf = NULL;
145: int t;
1.1 deraadt 146: time_t modtime;
1.6 millert 147: char *edit, tempname[PATHSIZE];
1.1 deraadt 148: struct stat statb;
149:
1.6 millert 150: (void)snprintf(tempname, sizeof(tempname),
151: "%s/mail.ReXXXXXXXXXX", tmpdir);
152: if ((t = mkstemp(tempname)) == -1 ||
153: (nf = Fdopen(t, "w")) == NULL) {
1.8 millert 154: warn("%s", tempname);
1.1 deraadt 155: goto out;
156: }
1.6 millert 157: if (readonly && fchmod(t, 0400) == -1) {
1.8 millert 158: warn("%s", tempname);
1.6 millert 159: (void)rm(tempname);
1.1 deraadt 160: goto out;
161: }
162: if (size >= 0)
163: while (--size >= 0 && (t = getc(fp)) != EOF)
1.4 millert 164: (void)putc(t, nf);
1.1 deraadt 165: else
166: while ((t = getc(fp)) != EOF)
1.4 millert 167: (void)putc(t, nf);
168: (void)fflush(nf);
1.1 deraadt 169: if (fstat(fileno(nf), &statb) < 0)
170: modtime = 0;
171: else
172: modtime = statb.st_mtime;
173: if (ferror(nf)) {
1.4 millert 174: (void)Fclose(nf);
1.8 millert 175: warn("%s", tempname);
1.6 millert 176: (void)rm(tempname);
1.1 deraadt 177: nf = NULL;
178: goto out;
179: }
180: if (Fclose(nf) < 0) {
1.8 millert 181: warn("%s", tempname);
1.6 millert 182: (void)rm(tempname);
1.1 deraadt 183: nf = NULL;
184: goto out;
185: }
186: nf = NULL;
1.5 millert 187: if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NULL)
1.1 deraadt 188: edit = type == 'e' ? _PATH_EX : _PATH_VI;
1.9 millert 189: if (run_command(edit, 0, 0, -1, tempname, NULL, NULL) < 0) {
1.6 millert 190: (void)rm(tempname);
1.1 deraadt 191: goto out;
192: }
193: /*
194: * If in read only mode or file unchanged, just remove the editor
195: * temporary and return.
196: */
197: if (readonly) {
1.6 millert 198: (void)rm(tempname);
1.1 deraadt 199: goto out;
200: }
1.6 millert 201: if (stat(tempname, &statb) < 0) {
1.8 millert 202: warn("%s", tempname);
1.1 deraadt 203: goto out;
204: }
205: if (modtime == statb.st_mtime) {
1.6 millert 206: (void)rm(tempname);
1.1 deraadt 207: goto out;
208: }
209: /*
210: * Now switch to new file.
211: */
1.6 millert 212: if ((nf = Fopen(tempname, "a+")) == NULL) {
1.8 millert 213: warn("%s", tempname);
1.6 millert 214: (void)rm(tempname);
1.1 deraadt 215: goto out;
216: }
1.6 millert 217: (void)rm(tempname);
1.1 deraadt 218: out:
1.3 millert 219: return(nf);
1.1 deraadt 220: }
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