1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /*
28*0Sstevel@tonic-gate * NAME
29*0Sstevel@tonic-gate * copyback - copy temp or whatever back to /var/mail
30*0Sstevel@tonic-gate *
31*0Sstevel@tonic-gate * SYNOPSIS
32*0Sstevel@tonic-gate * void copyback()
33*0Sstevel@tonic-gate *
34*0Sstevel@tonic-gate * DESCRIPTION
35*0Sstevel@tonic-gate * Copy the reduced contents of lettmp back to
36*0Sstevel@tonic-gate * the mail file. First copy any new mail from
37*0Sstevel@tonic-gate * the mail file to the end of lettmp.
38*0Sstevel@tonic-gate */
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate #include "mail.h"
41*0Sstevel@tonic-gate void
copyback()42*0Sstevel@tonic-gate copyback()
43*0Sstevel@tonic-gate {
44*0Sstevel@tonic-gate register int i, n;
45*0Sstevel@tonic-gate int new = 0;
46*0Sstevel@tonic-gate mode_t mailmode, omask;
47*0Sstevel@tonic-gate struct stat stbuf;
48*0Sstevel@tonic-gate void (*hstat)(), (*istat)(), (*qstat)();
49*0Sstevel@tonic-gate
50*0Sstevel@tonic-gate istat = signal(SIGINT, SIG_IGN);
51*0Sstevel@tonic-gate qstat = signal(SIGQUIT, SIG_IGN);
52*0Sstevel@tonic-gate hstat = signal(SIGHUP, SIG_IGN);
53*0Sstevel@tonic-gate lock(my_name);
54*0Sstevel@tonic-gate stat(mailfile, &stbuf);
55*0Sstevel@tonic-gate mailmode = stbuf.st_mode;
56*0Sstevel@tonic-gate
57*0Sstevel@tonic-gate /*
58*0Sstevel@tonic-gate * Has new mail arrived?
59*0Sstevel@tonic-gate */
60*0Sstevel@tonic-gate if (stbuf.st_size != let[nlet].adr) {
61*0Sstevel@tonic-gate malf = doopen(mailfile, "r", E_FILE);
62*0Sstevel@tonic-gate fseek(malf, let[nlet].adr, 0);
63*0Sstevel@tonic-gate fclose(tmpf);
64*0Sstevel@tonic-gate tmpf = doopen(lettmp, "a", E_TMP);
65*0Sstevel@tonic-gate /*
66*0Sstevel@tonic-gate * Append new mail assume only one new letter
67*0Sstevel@tonic-gate */
68*0Sstevel@tonic-gate if (!copystream(malf, tmpf)) {
69*0Sstevel@tonic-gate fclose(malf);
70*0Sstevel@tonic-gate tmperr();
71*0Sstevel@tonic-gate done(0);
72*0Sstevel@tonic-gate }
73*0Sstevel@tonic-gate fclose(malf);
74*0Sstevel@tonic-gate fclose(tmpf);
75*0Sstevel@tonic-gate tmpf = doopen(lettmp, "r+", E_TMP);
76*0Sstevel@tonic-gate if (nlet == (MAXLET-2)) {
77*0Sstevel@tonic-gate errmsg(E_SPACE, "");
78*0Sstevel@tonic-gate done(0);
79*0Sstevel@tonic-gate }
80*0Sstevel@tonic-gate let[++nlet].adr = stbuf.st_size;
81*0Sstevel@tonic-gate new = 1;
82*0Sstevel@tonic-gate }
83*0Sstevel@tonic-gate
84*0Sstevel@tonic-gate /*
85*0Sstevel@tonic-gate * Copy mail back to mail file
86*0Sstevel@tonic-gate */
87*0Sstevel@tonic-gate omask = umask(0117);
88*0Sstevel@tonic-gate
89*0Sstevel@tonic-gate /*
90*0Sstevel@tonic-gate * The invoker must own the mailfile being copied to
91*0Sstevel@tonic-gate */
92*0Sstevel@tonic-gate if ((stbuf.st_uid != my_euid) && (stbuf.st_uid != my_uid)) {
93*0Sstevel@tonic-gate errmsg(E_OWNR, "");
94*0Sstevel@tonic-gate done(0);
95*0Sstevel@tonic-gate }
96*0Sstevel@tonic-gate
97*0Sstevel@tonic-gate /*
98*0Sstevel@tonic-gate * If user specified the '-f' option we dont do
99*0Sstevel@tonic-gate * the routines to handle :saved files.
100*0Sstevel@tonic-gate * As we would(incorrectly) restore to the user's
101*0Sstevel@tonic-gate * mailfile upon next execution!
102*0Sstevel@tonic-gate */
103*0Sstevel@tonic-gate if (flgf) {
104*0Sstevel@tonic-gate (void) strlcpy(savefile, mailfile, sizeof (savefile));
105*0Sstevel@tonic-gate } else {
106*0Sstevel@tonic-gate cat(savefile, mailsave, my_name);
107*0Sstevel@tonic-gate }
108*0Sstevel@tonic-gate
109*0Sstevel@tonic-gate if ((malf = fopen(savefile, "w")) == NULL) {
110*0Sstevel@tonic-gate if (!flgf) {
111*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot open savefile");
112*0Sstevel@tonic-gate } else {
113*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot re-write the alternate file");
114*0Sstevel@tonic-gate }
115*0Sstevel@tonic-gate done(0);
116*0Sstevel@tonic-gate }
117*0Sstevel@tonic-gate
118*0Sstevel@tonic-gate if (chown(savefile, mf_uid, mf_gid) == -1) {
119*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot chown savefile");
120*0Sstevel@tonic-gate done(0);
121*0Sstevel@tonic-gate }
122*0Sstevel@tonic-gate umask(omask);
123*0Sstevel@tonic-gate n = 0;
124*0Sstevel@tonic-gate
125*0Sstevel@tonic-gate for (i = 0; i < nlet; i++) {
126*0Sstevel@tonic-gate /*
127*0Sstevel@tonic-gate * Note: any action other than an undelete, or a
128*0Sstevel@tonic-gate * plain read causes the letter acted upon to be
129*0Sstevel@tonic-gate * deleted
130*0Sstevel@tonic-gate */
131*0Sstevel@tonic-gate if (let[i].change == ' ') {
132*0Sstevel@tonic-gate if (copylet(i, malf, ORDINARY) == FALSE) {
133*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot copy mail to savefile");
134*0Sstevel@tonic-gate (void) fprintf(stderr, "%s: A copy of your "
135*0Sstevel@tonic-gate "mailfile is in '%s'\n", program, lettmp);
136*0Sstevel@tonic-gate done(1); /* keep temp file */
137*0Sstevel@tonic-gate }
138*0Sstevel@tonic-gate n++;
139*0Sstevel@tonic-gate }
140*0Sstevel@tonic-gate }
141*0Sstevel@tonic-gate fclose(malf);
142*0Sstevel@tonic-gate
143*0Sstevel@tonic-gate if (!flgf) {
144*0Sstevel@tonic-gate if (unlink(mailfile) != 0) {
145*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot unlink mailfile");
146*0Sstevel@tonic-gate done(0);
147*0Sstevel@tonic-gate }
148*0Sstevel@tonic-gate chmod(savefile, mailmode);
149*0Sstevel@tonic-gate #ifdef SVR4
150*0Sstevel@tonic-gate if (rename(savefile, mailfile) != 0) {
151*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot rename savefile to mailfile");
152*0Sstevel@tonic-gate done(0);
153*0Sstevel@tonic-gate }
154*0Sstevel@tonic-gate #else
155*0Sstevel@tonic-gate if (link(savefile, mailfile) != 0) {
156*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot link savefile to mailfile");
157*0Sstevel@tonic-gate done(0);
158*0Sstevel@tonic-gate }
159*0Sstevel@tonic-gate if (unlink(savefile) != 0) {
160*0Sstevel@tonic-gate errmsg(E_FILE, "Cannot unlink save file");
161*0Sstevel@tonic-gate done(0);
162*0Sstevel@tonic-gate }
163*0Sstevel@tonic-gate #endif
164*0Sstevel@tonic-gate }
165*0Sstevel@tonic-gate
166*0Sstevel@tonic-gate /*
167*0Sstevel@tonic-gate * Empty mailbox?
168*0Sstevel@tonic-gate */
169*0Sstevel@tonic-gate if (n == 0) {
170*0Sstevel@tonic-gate delempty(stbuf.st_mode, mailfile);
171*0Sstevel@tonic-gate }
172*0Sstevel@tonic-gate
173*0Sstevel@tonic-gate if (new && !flgf) {
174*0Sstevel@tonic-gate printf("New mail arrived\n");
175*0Sstevel@tonic-gate }
176*0Sstevel@tonic-gate
177*0Sstevel@tonic-gate unlock();
178*0Sstevel@tonic-gate (void) signal(SIGINT, istat);
179*0Sstevel@tonic-gate (void) signal(SIGQUIT, qstat);
180*0Sstevel@tonic-gate (void) signal(SIGHUP, hstat);
181*0Sstevel@tonic-gate }
182