Annotation of src/usr.bin/mail/edit.c, Revision 1.4
1.4 ! millert 1: /* $OpenBSD: edit.c,v 1.3 1997/07/13 21:21:11 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
1.2 deraadt 38: #if 0
39: static char sccsid[] = "@(#)edit.c 8.1 (Berkeley) 6/6/93";
40: #else
1.4 ! millert 41: static char rcsid[] = "$OpenBSD: edit.c,v 1.3 1997/07/13 21:21:11 millert Exp $";
1.2 deraadt 42: #endif
1.1 deraadt 43: #endif /* not lint */
44:
45: #include "rcv.h"
46: #include <fcntl.h>
47: #include "extern.h"
48:
49: /*
50: * Mail -- a mail program
51: *
52: * Perform message editing functions.
53: */
54:
55: /*
56: * Edit a message list.
57: */
58: int
1.2 deraadt 59: editor(v)
60: void *v;
1.1 deraadt 61: {
1.2 deraadt 62: int *msgvec = v;
1.1 deraadt 63:
1.3 millert 64: return(edit1(msgvec, 'e'));
1.1 deraadt 65: }
66:
67: /*
68: * Invoke the visual editor on a message list.
69: */
70: int
1.2 deraadt 71: visual(v)
72: void *v;
1.1 deraadt 73: {
1.2 deraadt 74: int *msgvec = v;
1.1 deraadt 75:
1.3 millert 76: return(edit1(msgvec, 'v'));
1.1 deraadt 77: }
78:
79: /*
80: * Edit a message by writing the message into a funnily-named file
81: * (which should not exist) and forking an editor on it.
82: * We get the editor from the stuff above.
83: */
84: int
85: edit1(msgvec, type)
86: int *msgvec;
87: int type;
88: {
89: register int c;
90: int i;
91: FILE *fp;
92: register struct message *mp;
93: off_t size;
94:
95: /*
96: * Deal with each message to be edited . . .
97: */
98: for (i = 0; msgvec[i] && i < msgCount; i++) {
99: sig_t sigint;
100:
101: if (i > 0) {
102: char buf[100];
103: char *p;
104:
105: printf("Edit message %d [ynq]? ", msgvec[i]);
1.3 millert 106: if (fgets(buf, sizeof(buf), stdin) == 0)
1.1 deraadt 107: break;
108: for (p = buf; *p == ' ' || *p == '\t'; p++)
109: ;
110: if (*p == 'q')
111: break;
112: if (*p == 'n')
113: continue;
114: }
115: dot = mp = &message[msgvec[i] - 1];
116: touch(mp);
117: sigint = signal(SIGINT, SIG_IGN);
118: fp = run_editor(setinput(mp), mp->m_size, type, readonly);
119: if (fp != NULL) {
1.4 ! millert 120: (void)fseek(otf, 0L, 2);
1.1 deraadt 121: size = ftell(otf);
122: mp->m_block = blockof(size);
123: mp->m_offset = offsetof(size);
124: mp->m_size = fsize(fp);
125: mp->m_lines = 0;
126: mp->m_flag |= MODIFY;
127: rewind(fp);
128: while ((c = getc(fp)) != EOF) {
129: if (c == '\n')
130: mp->m_lines++;
131: if (putc(c, otf) == EOF)
132: break;
133: }
134: if (ferror(otf))
1.3 millert 135: warn("/tmp");
136: (void)Fclose(fp);
1.1 deraadt 137: }
1.4 ! millert 138: (void)signal(SIGINT, sigint);
1.1 deraadt 139: }
1.3 millert 140: return(0);
1.1 deraadt 141: }
142:
143: /*
144: * Run an editor on the file at "fpp" of "size" bytes,
145: * and return a new file pointer.
146: * Signals must be handled by the caller.
147: * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI.
148: */
149: FILE *
150: run_editor(fp, size, type, readonly)
151: register FILE *fp;
152: off_t size;
153: int type, readonly;
154: {
155: register FILE *nf = NULL;
156: register int t;
157: time_t modtime;
158: char *edit;
159: struct stat statb;
160: extern char *tempEdit;
161:
162: if ((t = creat(tempEdit, readonly ? 0400 : 0600)) < 0) {
1.3 millert 163: warn(tempEdit);
1.1 deraadt 164: goto out;
165: }
166: if ((nf = Fdopen(t, "w")) == NULL) {
1.3 millert 167: warn(tempEdit);
1.4 ! millert 168: (void)unlink(tempEdit);
1.1 deraadt 169: goto out;
170: }
171: if (size >= 0)
172: while (--size >= 0 && (t = getc(fp)) != EOF)
1.4 ! millert 173: (void)putc(t, nf);
1.1 deraadt 174: else
175: while ((t = getc(fp)) != EOF)
1.4 ! millert 176: (void)putc(t, nf);
! 177: (void)fflush(nf);
1.1 deraadt 178: if (fstat(fileno(nf), &statb) < 0)
179: modtime = 0;
180: else
181: modtime = statb.st_mtime;
182: if (ferror(nf)) {
1.4 ! millert 183: (void)Fclose(nf);
1.3 millert 184: warn(tempEdit);
1.4 ! millert 185: (void)unlink(tempEdit);
1.1 deraadt 186: nf = NULL;
187: goto out;
188: }
189: if (Fclose(nf) < 0) {
1.3 millert 190: warn(tempEdit);
1.4 ! millert 191: (void)unlink(tempEdit);
1.1 deraadt 192: nf = NULL;
193: goto out;
194: }
195: nf = NULL;
196: if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NOSTR)
197: edit = type == 'e' ? _PATH_EX : _PATH_VI;
198: if (run_command(edit, 0, -1, -1, tempEdit, NOSTR, NOSTR) < 0) {
1.4 ! millert 199: (void)unlink(tempEdit);
1.1 deraadt 200: goto out;
201: }
202: /*
203: * If in read only mode or file unchanged, just remove the editor
204: * temporary and return.
205: */
206: if (readonly) {
1.4 ! millert 207: (void)unlink(tempEdit);
1.1 deraadt 208: goto out;
209: }
210: if (stat(tempEdit, &statb) < 0) {
1.3 millert 211: warn(tempEdit);
1.1 deraadt 212: goto out;
213: }
214: if (modtime == statb.st_mtime) {
1.4 ! millert 215: (void)unlink(tempEdit);
1.1 deraadt 216: goto out;
217: }
218: /*
219: * Now switch to new file.
220: */
221: if ((nf = Fopen(tempEdit, "a+")) == NULL) {
1.3 millert 222: warn(tempEdit);
1.4 ! millert 223: (void)unlink(tempEdit);
1.1 deraadt 224: goto out;
225: }
1.4 ! millert 226: (void)unlink(tempEdit);
1.1 deraadt 227: out:
1.3 millert 228: return(nf);
1.1 deraadt 229: }