xref: /freebsd/usr.bin/mail/temp.c (revision afe61c15161c324a7af299a9b8457aba5afc92db)
1 /*
2  * Copyright (c) 1980, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #ifndef lint
35 static char sccsid[] = "@(#)temp.c	8.1 (Berkeley) 6/6/93";
36 #endif /* not lint */
37 
38 #include "rcv.h"
39 #include <errno.h>
40 #include "extern.h"
41 
42 /*
43  * Mail -- a mail program
44  *
45  * Give names to all the temporary files that we will need.
46  */
47 
48 char	tempMail[24];
49 char	tempQuit[24];
50 char	tempEdit[24];
51 char	tempResid[24];
52 char	tempMesg[24];
53 char	*tmpdir;
54 
55 void
56 tinit()
57 {
58 	register char *cp;
59 	int len;
60 
61 	if ((tmpdir = getenv("TMPDIR")) == NULL)
62 		tmpdir = _PATH_TMP;
63 	else {
64 		len = strlen(tmpdir);
65 		if ((cp = malloc(len + 2)) == NULL) {
66 			(void)fprintf(stderr, "mail: %s\n", strerror(errno));
67 			exit (1);
68 		}
69 		(void)strcpy(cp, tmpdir);
70 		cp[len] = '/';
71 		cp[len + 1] = '\0';
72 		tmpdir = cp;
73 	}
74 
75 	strcpy(tempMail, tmpdir);
76 	mktemp(strcat(tempMail, "RsXXXXXX"));
77 	strcpy(tempResid, tmpdir);
78 	mktemp(strcat(tempResid, "RqXXXXXX"));
79 	strcpy(tempQuit, tmpdir);
80 	mktemp(strcat(tempQuit, "RmXXXXXX"));
81 	strcpy(tempEdit, tmpdir);
82 	mktemp(strcat(tempEdit, "ReXXXXXX"));
83 	strcpy(tempMesg, tmpdir);
84 	mktemp(strcat(tempMesg, "RxXXXXXX"));
85 
86 	/*
87 	 * It's okay to call savestr in here because main will
88 	 * do a spreserve() after us.
89 	 */
90 	if (myname != NOSTR) {
91 		if (getuserid(myname) < 0) {
92 			printf("\"%s\" is not a user of this system\n",
93 			    myname);
94 			exit(1);
95 		}
96 	} else {
97 		if ((cp = username()) == NOSTR) {
98 			myname = "ubluit";
99 			if (rcvmode) {
100 				printf("Who are you!?\n");
101 				exit(1);
102 			}
103 		} else
104 			myname = savestr(cp);
105 	}
106 	if ((cp = getenv("HOME")) == NOSTR)
107 		cp = ".";
108 	homedir = savestr(cp);
109 	if (debug)
110 		printf("user = %s, homedir = %s\n", myname, homedir);
111 }
112