Annotation of src/usr.bin/mail/edit.c, Revision 1.2
1.2 ! deraadt 1: /* $OpenBSD: edit.c,v 1.5 1996/06/08 19:48:20 christos Exp $ */
! 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
! 41: static char rcsid[] = "$OpenBSD: edit.c,v 1.5 1996/06/08 19:48:20 christos Exp $";
! 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:
64: return edit1(msgvec, 'e');
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:
76: return edit1(msgvec, 'v');
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]);
106: if (fgets(buf, sizeof buf, stdin) == 0)
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) {
120: (void) fseek(otf, 0L, 2);
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))
135: perror("/tmp");
136: (void) Fclose(fp);
137: }
138: (void) signal(SIGINT, sigint);
139: }
140: return 0;
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) {
163: perror(tempEdit);
164: goto out;
165: }
166: if ((nf = Fdopen(t, "w")) == NULL) {
167: perror(tempEdit);
168: (void) unlink(tempEdit);
169: goto out;
170: }
171: if (size >= 0)
172: while (--size >= 0 && (t = getc(fp)) != EOF)
173: (void) putc(t, nf);
174: else
175: while ((t = getc(fp)) != EOF)
176: (void) putc(t, nf);
177: (void) fflush(nf);
178: if (fstat(fileno(nf), &statb) < 0)
179: modtime = 0;
180: else
181: modtime = statb.st_mtime;
182: if (ferror(nf)) {
183: (void) Fclose(nf);
184: perror(tempEdit);
185: (void) unlink(tempEdit);
186: nf = NULL;
187: goto out;
188: }
189: if (Fclose(nf) < 0) {
190: perror(tempEdit);
191: (void) unlink(tempEdit);
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) {
199: (void) unlink(tempEdit);
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) {
207: (void) unlink(tempEdit);
208: goto out;
209: }
210: if (stat(tempEdit, &statb) < 0) {
211: perror(tempEdit);
212: goto out;
213: }
214: if (modtime == statb.st_mtime) {
215: (void) unlink(tempEdit);
216: goto out;
217: }
218: /*
219: * Now switch to new file.
220: */
221: if ((nf = Fopen(tempEdit, "a+")) == NULL) {
222: perror(tempEdit);
223: (void) unlink(tempEdit);
224: goto out;
225: }
226: (void) unlink(tempEdit);
227: out:
228: return nf;
229: }
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