diff options
Diffstat (limited to 'usr.sbin/mailwrapper')
| -rw-r--r-- | usr.sbin/mailwrapper/Makefile | 31 | ||||
| -rw-r--r-- | usr.sbin/mailwrapper/mailwrapper.8 | 164 | ||||
| -rw-r--r-- | usr.sbin/mailwrapper/mailwrapper.c | 190 | ||||
| -rw-r--r-- | usr.sbin/mailwrapper/pathnames.h | 35 |
4 files changed, 420 insertions, 0 deletions
diff --git a/usr.sbin/mailwrapper/Makefile b/usr.sbin/mailwrapper/Makefile new file mode 100644 index 0000000000000..f67e77539c0da --- /dev/null +++ b/usr.sbin/mailwrapper/Makefile @@ -0,0 +1,31 @@ +# $FreeBSD$ + +.if !defined(NO_MAILWRAPPER) +PROG= mailwrapper +MAN= mailwrapper.8 + +DPADD= ${LIBUTIL} +LDADD= -lutil +.endif + +.if !defined(NO_MAILWRAPPER) || !defined(NO_SENDMAIL) +SYMLINKS= ${BINDIR}/mailwrapper /usr/sbin/sendmail \ + ${BINDIR}/mailwrapper /usr/sbin/hoststat \ + ${BINDIR}/mailwrapper /usr/sbin/purgestat \ + ${BINDIR}/mailwrapper /usr/bin/newaliases \ + ${BINDIR}/mailwrapper /usr/bin/mailq + +.if defined(NO_MAILWRAPPER) && !defined(NO_SENDMAIL) +SYMLINKS+= /usr/libexec/sendmail/sendmail ${BINDIR}/mailwrapper +.endif +.endif + +afterinstall: +.if !defined(NO_MAILWRAPPER) +.if !exists(${DESTDIR}/etc/mail/mailer.conf) + ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m 644 \ + ${.CURDIR}/../../etc/mail/mailer.conf ${DESTDIR}/etc/mail +.endif +.endif + +.include <bsd.prog.mk> diff --git a/usr.sbin/mailwrapper/mailwrapper.8 b/usr.sbin/mailwrapper/mailwrapper.8 new file mode 100644 index 0000000000000..36b5d8960d685 --- /dev/null +++ b/usr.sbin/mailwrapper/mailwrapper.8 @@ -0,0 +1,164 @@ +.\" $NetBSD: mailwrapper.8,v 1.6 1999/03/25 16:40:17 is Exp $ +.\" $FreeBSD$ +.\" +.\" Copyright (c) 1998 +.\" Perry E. Metzger. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgment: +.\" This product includes software developed for the NetBSD Project +.\" by Perry E. Metzger. +.\" 4. The name of the author may not be used to endorse or promote products +.\" derived from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +.\" +.\" The following requests are required for all man pages. +.Dd December 16, 1998 +.Dt MAILWRAPPER 8 +.Os +.Sh NAME +.Nm mailwrapper +.Nd invoke appropriate MTA software based on configuration file +.Sh SYNOPSIS +Special. +See below. +.Sh DESCRIPTION +At one time, the only Mail Transfer Agent (MTA) software easily available +was +.Xr sendmail 8 . +As a result of this, most Mail User Agents (MUAs) such as +.Xr mail 1 +had the path and calling conventions expected by +.Xr sendmail 8 +compiled in. +.Pp +Times have changed, however. +On a modern +.Ux +system, the administrator may wish to use one of several +available MTAs. +.Pp +It would be difficult to modify all MUA software typically available +on a system, so most of the authors of alternative MTAs have written +their front end message submission programs so that they use the same +calling conventions as +.Xr sendmail 8 +and may be put into place instead of +.Xr sendmail 8 +in +.Pa /usr/sbin/sendmail . +.Pp +.Xr sendmail 8 +also typically has aliases named +.Xr mailq 1 +and +.Xr newaliases 1 +linked to it. +The program knows to behave differently when its +.Va argv[0] +is +.Dq mailq +or +.Dq newaliases +and behaves appropriately. +Typically, replacement MTAs provide similar +functionality, either through a program that also switches behavior +based on calling name, or through a set of programs that provide +similar functionality. +.Pp +Although having replacement programs that plug replace +.Xr sendmail 8 +helps in installing alternative MTAs, it essentially makes the +configuration of the system depend on hard installing new programs in +.Pa /usr . +This leads to configuration problems for many administrators, since +they may wish to install a new MTA without altering the system +provided +.Pa /usr . +(This may be, for example, to avoid having upgrade problems when a new +version of the system is installed over the old.) +They may also have a shared +.Pa /usr +among several +machines, and may wish to avoid placing implicit configuration +information in a read-only +.Pa /usr . +.Pp +The +.Nm +utility is designed to replace +.Pa /usr/sbin/sendmail +and to invoke an appropriate MTA instead of +.Xr sendmail 8 +based on configuration information placed in +.Pa /etc/mail/mailer.conf . +This permits the administrator to configure which MTA is to be invoked on +the system at run time. +.Pp +Other configuration files may need to be altered when replacing +.Xr sendmail 8 . +For example, if the replacement MTA does not support the +.Fl A +option with +.Xr mailq 1 , +.Va daily_status_include_submit_mailq +should be turned off in +.Pa /etc/periodic.conf . +.Sh FILES +Configuration for +.Nm +is kept in +.Pa /etc/mail/mailer.conf . +.Pa /usr/sbin/sendmail +is typically set up as a symbolic link to +.Nm +which is not usually invoked on its own. +.Sh DIAGNOSTICS +The +.Nm +utility will return an error value and print a diagnostic if its configuration +file is missing or malformed, or does not contain a mapping for the +name under which +.Nm +was invoked. +.Sh SEE ALSO +.Xr mail 1 , +.Xr mailq 1 , +.Xr newaliases 1 , +.Xr mailer.conf 5 , +.Xr periodic.conf 5 , +.Xr sendmail 8 +.Sh HISTORY +The +.Nm +utility first appeared in +.Nx 1.4 +and then +.Fx 4.0 . +.Sh AUTHORS +.An Perry E. Metzger Aq perry@piermont.com +.Sh BUGS +The entire reason this program exists is a crock. +Instead, a command +for how to submit mail should be standardized, and all the "behave +differently if invoked with a different name" behavior of things like +.Xr mailq 1 +should go away. diff --git a/usr.sbin/mailwrapper/mailwrapper.c b/usr.sbin/mailwrapper/mailwrapper.c new file mode 100644 index 0000000000000..c71bb3000e4d8 --- /dev/null +++ b/usr.sbin/mailwrapper/mailwrapper.c @@ -0,0 +1,190 @@ +/* $OpenBSD: mailwrapper.c,v 1.6 1999/12/17 05:06:28 mickey Exp $ */ +/* $NetBSD: mailwrapper.c,v 1.3 1999/05/29 18:18:15 christos Exp $ */ + +/* + * Copyright (c) 1998 + * Perry E. Metzger. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgment: + * This product includes software developed for the NetBSD Project + * by Perry E. Metzger. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <err.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <libutil.h> +#include <syslog.h> +#include <stdarg.h> + +#include "pathnames.h" + +struct arglist { + size_t argc, maxc; + char **argv; +}; + +int main(int, char *[], char *[]); + +static void initarg(struct arglist *); +static void addarg(struct arglist *, const char *, int); +static void freearg(struct arglist *, int); + +extern const char *__progname; /* from crt0.o */ + +static void +initarg(al) + struct arglist *al; +{ + al->argc = 0; + al->maxc = 10; + if ((al->argv = malloc(al->maxc * sizeof(char *))) == NULL) + err(1, NULL); +} + +static void +addarg(al, arg, copy) + struct arglist *al; + const char *arg; + int copy; +{ + char **argv2; + + if (al->argc == al->maxc) { + al->maxc <<= 1; + + if ((argv2 = realloc(al->argv, + al->maxc * sizeof(char *))) == NULL) { + if (al->argv) + free(al->argv); + al->argv = NULL; + err(1, NULL); + } else { + al->argv = argv2; + } + } + if (copy) { + if ((al->argv[al->argc++] = strdup(arg)) == NULL) + err(1, NULL); + } else + al->argv[al->argc++] = (char *)arg; +} + +static void +freearg(al, copy) + struct arglist *al; + int copy; +{ + size_t i; + if (copy) + for (i = 0; i < al->argc; i++) + free(al->argv[i]); + free(al->argv); +} + +int +main(argc, argv, envp) + int argc; + char *argv[]; + char *envp[]; +{ + FILE *config; + char *line, *cp, *from, *to, *ap; + size_t len, lineno = 0; + struct arglist al; + + initarg(&al); + for (len = 0; len < argc; len++) + addarg(&al, argv[len], 0); + + if ((config = fopen(_PATH_MAILERCONF, "r")) == NULL) { + addarg(&al, NULL, 0); + openlog("mailwrapper", LOG_PID, LOG_MAIL); + syslog(LOG_INFO, "can't open %s, using %s as default MTA", + _PATH_MAILERCONF, _PATH_DEFAULTMTA); + closelog(); + execve(_PATH_DEFAULTMTA, al.argv, envp); + freearg(&al, 0); + err(1, "execing %s", _PATH_DEFAULTMTA); + /*NOTREACHED*/ + } + + for (;;) { + if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL) { + if (feof(config)) + errx(1, "no mapping in %s", _PATH_MAILERCONF); + err(1, "can't parse line %lu", (u_long)lineno); + } + +#define WS " \t\n" + cp = line; + + cp += strspn(cp, WS); + if (cp[0] == '\0') { + /* empty line */ + free(line); + continue; + } + + if ((from = strsep(&cp, WS)) == NULL) + goto parse_error; + + cp += strspn(cp, WS); + + if ((to = strsep(&cp, WS)) == NULL) + goto parse_error; + + if (strcmp(from, __progname) == 0) { + for (ap = strsep(&cp, WS); ap != NULL; + ap = strsep(&cp, WS)) + if (*ap) + addarg(&al, ap, 0); + break; + } + + free(line); + } + + (void)fclose(config); + + addarg(&al, NULL, 0); + execve(to, al.argv, envp); + freearg(&al, 0); + warn("execing %s", to); + free(line); + exit(1); + /*NOTREACHED*/ +parse_error: + freearg(&al, 0); + free(line); + errx(1, "parse error in %s at line %lu", + _PATH_MAILERCONF, (u_long)lineno); + /*NOTREACHED*/ +} diff --git a/usr.sbin/mailwrapper/pathnames.h b/usr.sbin/mailwrapper/pathnames.h new file mode 100644 index 0000000000000..d8ae498ce0048 --- /dev/null +++ b/usr.sbin/mailwrapper/pathnames.h @@ -0,0 +1,35 @@ +/* $FreeBSD$ */ + +/* + * Copyright (c) 1998 + * Perry E. Metzger. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgment: + * This product includes software developed for the NetBSD Project + * by Perry E. Metzger. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#define _PATH_MAILERCONF "/etc/mail/mailer.conf" +#define _PATH_DEFAULTMTA "/usr/libexec/sendmail/sendmail" |