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/* $OpenBSD: v7.local.c,v 1.17 2016/07/19 06:43:27 deraadt Exp $ */ |
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/* $NetBSD: v7.local.c,v 1.8 1997/05/13 06:15:58 mikel Exp $ */ |
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/* |
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* Copyright (c) 1980, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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/* |
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* Mail -- a mail program |
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* |
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* Version 7 |
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* |
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* Local routines that are installation dependent. |
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*/ |
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#include "rcv.h" |
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#include <stdlib.h> |
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#include <fcntl.h> |
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#include "extern.h" |
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/* |
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* Locate the user's mailbox file (ie, the place where new, unread |
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* mail is queued). |
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*/ |
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void |
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findmail(char *user, char *buf, int buflen) |
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{ |
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char *mbox; |
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struct stat sb; |
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/* Ignore $MAIL if it is not owned by the invoking user */ |
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if ((mbox = getenv("MAIL")) && stat(mbox, &sb) == 0 && |
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sb.st_uid != getuid() && sb.st_uid != geteuid()) |
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mbox = NULL; |
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if (mbox) |
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(void)strlcpy(buf, mbox, buflen); |
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else |
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(void)snprintf(buf, buflen, "%s/%s", _PATH_MAILDIR, user); |
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} |
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/* |
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* Get rid of the queued mail. |
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*/ |
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void |
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demail(void) |
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{ |
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int fd; |
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if (value("keep") != NULL || rm(mailname) < 0) { |
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fd = open(mailname, O_CREAT | O_TRUNC | O_WRONLY, 0600); |
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if (fd != -1) |
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close(fd); |
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} |
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} |
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/* |
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* Discover user login name. |
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*/ |
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char * |
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username(void) |
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{ |
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char *np; |
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uid_t uid; |
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if ((np = getenv("USER")) != NULL) |
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return(np); |
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if ((np = getenv("LOGNAME")) != NULL) |
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return(np); |
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if ((np = getname(uid = getuid())) != NULL) |
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return(np); |
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if ((np = getlogin()) != NULL) |
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return(np); |
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printf("Cannot associate a name with uid %u\n", (unsigned)uid); |
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return(NULL); |
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} |