xref: /original-bsd/usr.bin/mail/temp.c (revision 3a296e00)
1 /*
2  * Copyright (c) 1980 Regents of the University of California.
3  * All rights reserved.
4  *
5  * %sccs.include.redist.c%
6  */
7 
8 #ifndef lint
9 static char sccsid[] = "@(#)temp.c	5.17 (Berkeley) 06/26/92";
10 #endif /* not lint */
11 
12 #include "rcv.h"
13 #include <errno.h>
14 #include "extern.h"
15 
16 /*
17  * Mail -- a mail program
18  *
19  * Give names to all the temporary files that we will need.
20  */
21 
22 char	tempMail[24];
23 char	tempQuit[24];
24 char	tempEdit[24];
25 char	tempResid[24];
26 char	tempMesg[24];
27 char	*tmpdir;
28 
29 void
30 tinit()
31 {
32 	register char *cp;
33 	int len;
34 
35 	if ((tmpdir = getenv("TMPDIR")) == NULL)
36 		tmpdir = _PATH_TMP;
37 	else {
38 		len = strlen(tmpdir);
39 		if ((cp = malloc(len + 2)) == NULL) {
40 			(void)fprintf(stderr, "mail: %s\n", strerror(errno));
41 			exit (1);
42 		}
43 		(void)strcpy(cp, tmpdir);
44 		cp[len] = '/';
45 		cp[len + 1] = '\0';
46 		tmpdir = cp;
47 	}
48 
49 	strcpy(tempMail, tmpdir);
50 	mktemp(strcat(tempMail, "RsXXXXXX"));
51 	strcpy(tempResid, tmpdir);
52 	mktemp(strcat(tempResid, "RqXXXXXX"));
53 	strcpy(tempQuit, tmpdir);
54 	mktemp(strcat(tempQuit, "RmXXXXXX"));
55 	strcpy(tempEdit, tmpdir);
56 	mktemp(strcat(tempEdit, "ReXXXXXX"));
57 	strcpy(tempMesg, tmpdir);
58 	mktemp(strcat(tempMesg, "RxXXXXXX"));
59 
60 	/*
61 	 * It's okay to call savestr in here because main will
62 	 * do a spreserve() after us.
63 	 */
64 	if (myname != NOSTR) {
65 		if (getuserid(myname) < 0) {
66 			printf("\"%s\" is not a user of this system\n",
67 			    myname);
68 			exit(1);
69 		}
70 	} else {
71 		if ((cp = username()) == NOSTR) {
72 			myname = "ubluit";
73 			if (rcvmode) {
74 				printf("Who are you!?\n");
75 				exit(1);
76 			}
77 		} else
78 			myname = savestr(cp);
79 	}
80 	if ((cp = getenv("HOME")) == NOSTR)
81 		cp = ".";
82 	homedir = savestr(cp);
83 	if (debug)
84 		printf("user = %s, homedir = %s\n", myname, homedir);
85 }
86