87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
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/* $NetBSD: mailwrapper.c,v 1.1 1998/12/25 22:06:59 perry Exp $ */
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/*
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* Copyright (c) 1998
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* Perry E. Metzger. 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed for the NetBSD Project
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* by Perry E. Metzger.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#define _PATH_MAILERCONF "/etc/mailer.conf"
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int main __P((int, char *[], char *[]));
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int
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main(argc, argv, envp)
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int argc;
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char *argv[];
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char *envp[];
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{
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FILE *config;
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char buf[BUFSIZ], from[BUFSIZ], to[BUFSIZ], orig[BUFSIZ];
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char *tmp;
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if ((config = fopen(_PATH_MAILERCONF, "r")) == NULL)
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err(1, "mailswitch: can't open %s", _PATH_MAILERCONF);
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if (strlen(argv[0]) > (BUFSIZ - 1))
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errx(1, "mailswitch: invoking command pathname is too long.");
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tmp = strrchr(argv[0], '/');
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if (tmp == NULL)
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strcpy(orig, argv[0]);
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else
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strcpy(orig, ++tmp);
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while (1) {
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if (fgets(buf, BUFSIZ, config) == NULL)
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errx(1, "mailswitch: %s contains no mapping for %s",
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_PATH_MAILERCONF, orig);
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if (buf[0] == '#')
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continue;
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if (sscanf(buf, "%s %s", from, to) != 2)
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continue;
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if (strcmp(from, orig) == 0)
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break;
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}
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fclose(config);
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execve(to, argv, envp);
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err(1, "mailswitch: execing %s:", to);
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}
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