1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1996 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "rcv.h"
#include <locale.h>
/*
* mailx -- a modified version of a University of California at Berkeley
* mail program
*
* Perform message editing functions.
*/
static void edit1(int *msgvec, char *ed);
/*
* Edit a message list.
*/
int
editor(int *msgvec)
{
char *edname;
if ((edname = value("EDITOR")) == NOSTR || *edname == '\0')
edname = EDITOR;
edit1(msgvec, edname);
return(0);
}
/*
* Invoke the visual editor on a message list.
*/
int
visual(int *msgvec)
{
char *edname;
if ((edname = value("VISUAL")) == NOSTR || *edname == '\0')
edname = VISUAL;
edit1(msgvec, edname);
return(0);
}
/*
* Edit a message by writing the message into a funnily-named file
* (which should not exist) and forking an editor on it.
* We get the editor from the stuff above.
*/
static void
edit1(int *msgvec, char *ed)
{
register int c, lastc = '\n';
pid_t pid;
int *ip, mesg, blank = 1;
long ms, lines;
void (*sigint)(int), (*sigquit)(int);
FILE *ibuf, *obuf;
struct message *mp;
off_t size;
struct stat statb;
long modtime;
int fd = -1;
/*
* Set signals; locate editor.
*/
sigint = sigset(SIGINT, SIG_IGN);
sigquit = sigset(SIGQUIT, SIG_IGN);
ed = safeexpand(ed);
/*
* Deal with each message to be edited . . .
*/
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
mesg = *ip;
touch(mesg);
mp = &message[mesg-1];
dot = mp;
if (mp->m_text) {
if (!access(tempZedit, 2)) {
printf(gettext("%s: file exists\n"), tempZedit);
goto out;
}
/*
* Copy the message into the edit file.
*/
if ((fd = open(tempZedit, O_RDWR|O_CREAT|
O_EXCL, 0600)) < 0 ||
(obuf = fdopen(fd, "w")) == NULL) {
perror(tempZedit);
goto out;
}
if (msend(mp, obuf, 0, fputs) < 0) {
perror(tempZedit);
fclose(obuf);
removefile(tempZedit);
goto out;
}
fflush(obuf);
if (fferror(obuf)) {
perror(tempZedit);
fclose(obuf);
removefile(tempZedit);
goto out;
}
fclose(obuf);
/*
* If we are in read only mode, make the
* temporary message file readonly as well.
*/
if (readonly)
chmod(tempZedit, 0400);
/*
* Fork/execl the editor on the edit file.
*/
if (stat(tempZedit, &statb) < 0)
modtime = 0;
else
modtime = statb.st_mtime;
pid = vfork();
if (pid == (pid_t)-1) {
perror("fork");
removefile(tempZedit);
goto out;
}
if (pid == 0) {
sigchild();
if (sigint != SIG_IGN)
sigset(SIGINT, SIG_DFL);
if (sigquit != SIG_IGN)
sigset(SIGQUIT, SIG_DFL);
execlp(ed, ed, tempZedit, (char *)0);
perror(ed);
_exit(1);
}
while (wait(&mesg) != pid)
;
/*
* If in read only mode, just remove the editor
* temporary and return.
*/
if (readonly) {
removefile(tempZedit);
continue;
}
/*
* Now copy the message to the end of the
* temp file.
*/
if (stat(tempZedit, &statb) < 0) {
perror(tempZedit);
continue;
}
if (modtime == statb.st_mtime) {
removefile(tempZedit);
continue;
}
if ((ibuf = fopen(tempZedit, "r")) == NULL) {
perror(tempZedit);
removefile(tempZedit);
continue;
}
removefile(tempZedit);
fseek(otf, (long) 0, 2);
size = fsize(otf);
mp->m_flag |= MODIFY;
mp->m_offset = size;
ms = 0L;
lines = 0;
while ((c = getc(ibuf)) != EOF) {
if (c == '\n') {
lines++;
blank = lastc == '\n';
}
lastc = c;
putc(c, otf);
if (ferror(otf))
break;
ms++;
}
if (!blank) {
putc('\n', otf);
ms++;
lines++;
}
mp->m_size = ms;
mp->m_lines = lines;
fflush(otf);
if (fferror(otf))
perror("/tmp");
fclose(ibuf);
setclen(mp);
} else {
printf("\n%s\n", gettext(
"*** Message content is not printable: pipe to command or save to a file ***"));
}
}
/*
* Restore signals and return.
*/
out:
sigset(SIGINT, sigint);
sigset(SIGQUIT, sigquit);
}
|
