usr/src/usr.bin/mail/temp.c

/*
 * Copyright (c) 1980, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)temp.c      8.1 (Berkeley) %G%";
#endif /* not lint */

#include "rcv.h"
#include <errno.h>
#include "extern.h"

/*
 * Mail -- a mail program
 *
 * Give names to all the temporary files that we will need.
 */

char    tempMail[24];
char    tempQuit[24];
char    tempEdit[24];
char    tempResid[24];
char    tempMesg[24];
char    *tmpdir;

void
tinit()
{
        register char *cp;
        int len;

        if ((tmpdir = getenv("TMPDIR")) == NULL)
                tmpdir = _PATH_TMP;
        else {
                len = strlen(tmpdir);
                if ((cp = malloc(len + 2)) == NULL) {
                        (void)fprintf(stderr, "mail: %s\n", strerror(errno));
                        exit (1);
                }
                (void)strcpy(cp, tmpdir);
                cp[len] = '/';
                cp[len + 1] = '\0';
                tmpdir = cp;
        }

        strcpy(tempMail, tmpdir);
        mktemp(strcat(tempMail, "RsXXXXXX"));
        strcpy(tempResid, tmpdir);
        mktemp(strcat(tempResid, "RqXXXXXX"));
        strcpy(tempQuit, tmpdir);
        mktemp(strcat(tempQuit, "RmXXXXXX"));
        strcpy(tempEdit, tmpdir);
        mktemp(strcat(tempEdit, "ReXXXXXX"));
        strcpy(tempMesg, tmpdir);
        mktemp(strcat(tempMesg, "RxXXXXXX"));

        /*
         * It's okay to call savestr in here because main will
         * do a spreserve() after us.
         */
        if (myname != NOSTR) {
                if (getuserid(myname) < 0) {
                        printf("\"%s\" is not a user of this system\n",
                            myname);
                        exit(1);
                }
        } else {
                if ((cp = username()) == NOSTR) {
                        myname = "ubluit";
                        if (rcvmode) {
                                printf("Who are you!?\n");
                                exit(1);
                        }
                } else
                        myname = savestr(cp);
        }
        if ((cp = getenv("HOME")) == NOSTR)
                cp = ".";
        homedir = savestr(cp);
        if (debug)
                printf("user = %s, homedir = %s\n", myname, homedir);
}