initial import of NetBSD tree

4 files changed, 483 insertions, 0 deletions

diff --git a/libexec/mail.local/Makefile b/libexec/mail.local/Makefile
new file mode 100644
index 00000000000..f61891cb428
--- /dev/null
+++ b/libexec/mail.local/Makefile
@@ -0,0 +1,9 @@
+#	from: @(#)Makefile	5.3 (Berkeley) 1/17/91
+#	$Id: Makefile,v 1.1 1995/10/18 08:43:19 deraadt Exp $
+
+PROG=	mail.local
+MAN=	mail.local.8
+BINOWN=	root
+BINMODE=4555
+
+.include <bsd.prog.mk>
diff --git a/libexec/mail.local/mail.local.8 b/libexec/mail.local/mail.local.8
new file mode 100644
index 00000000000..10d78007a1b
--- /dev/null
+++ b/libexec/mail.local/mail.local.8
@@ -0,0 +1,115 @@
+.\" Copyright (c) 1990 The Regents of the University of California.
+.\" 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 acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+.\"
+.\"	from: @(#)mail.local.8	6.8 (Berkeley) 4/27/91
+.\"	$Id: mail.local.8,v 1.1 1995/10/18 08:43:19 deraadt Exp $
+.\"
+.Dd April 27, 1991
+.Dt MAIL.LOCAL 8
+.Os
+.Sh NAME
+.Nm mail.local
+.Nd store mail in a mailbox
+.Sh SYNOPSIS
+.Nm mail.local
+.Op Fl l
+.Op Fl f Ar from
+.Ar user ...
+.Sh DESCRIPTION
+.Nm Mail.local
+reads the standard input up to an end-of-file and appends it to each
+.Ar user 's
+.Pa mail
+file.
+The
+.Ar user
+must be a valid user name.
+.Pp
+The options are as follows:
+.Bl -tag -width xxxxxxx
+.It Fl f Ar from
+Specify the sender's name.
+.It Fl l
+Request that
+.Nm username.lock
+files be used for locking.
+.El
+.Pp
+Individual mail messages in the mailbox are delimited by an empty
+line followed by a line beginning with the string ``From ''.
+A line containing the string ``From '', the sender's name and a time stamp
+is prepended to each delivered mail message.
+A blank line is appended to each message.
+A greater-than character (``>'') is prepended to any line in the message
+which could be mistaken for a ``From '' delimiter line.
+.Pp
+If the
+.Op Fl l
+flag is specified mailbox locking is done with
+.Nm username.lock
+files. Otherwise, the mailbox is exclusively locked with
+.Xr flock 2
+while mail is appended.
+.Pp
+If the ``biff'' service is returned by
+.Xr getservbyname 3 ,
+the biff server is notified of delivered mail.
+.Pp
+The
+.Nm mail.local
+utility exits 0 on success, and >0 if an error occurs.
+.Sh ENVIRONMENT
+.Bl -tag -width indent
+.It Ev TZ
+Used to set the appropriate time zone on the timestamp.
+.El
+.Sh FILES
+.Bl -tag -width /tmp/local.XXXXXX -compact
+.It Pa /tmp/local.XXXXXX
+temporary files
+.It Pa /var/mail/user
+user's mailbox directory
+.El
+.Sh SEE ALSO
+.Xr mail 1 ,
+.Xr xsend 1 ,
+.Xr flock 2 ,
+.Xr getservbyname 3 ,
+.Xr comsat 8 ,
+.Xr sendmail 8
+.Sh HISTORY
+A superset of
+.Nm mail.local
+(handling mailbox reading as well as mail delivery)
+appeared in
+.At v7
+as the program
+.Nm mail .
diff --git a/libexec/mail.local/mail.local.c b/libexec/mail.local/mail.local.c
new file mode 100644
index 00000000000..3baf475e92e
--- /dev/null
+++ b/libexec/mail.local/mail.local.c
@@ -0,0 +1,321 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * 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 acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1990 The Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+/*static char sccsid[] = "from: @(#)mail.local.c	5.6 (Berkeley) 6/19/91";*/
+static char rcsid[] = "$Id: mail.local.c,v 1.1 1995/10/18 08:43:19 deraadt Exp $";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pathnames.h"
+
+#define	FATAL		1
+#define	NOTFATAL	0
+
+int	deliver __P((int, char *, int));
+void	err __P((int, const char *, ...));
+void	notifybiff __P((char *));
+int	store __P((char *));
+void	usage __P((void));
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	extern int optind;
+	extern char *optarg;
+	struct passwd *pw;
+	int ch, fd, eval, lockfile=0;
+	uid_t uid;
+	char *from;
+
+	openlog("mail.local", LOG_PERROR, LOG_MAIL);
+
+	from = NULL;
+	while ((ch = getopt(argc, argv, "ldf:r:")) != EOF)
+		switch(ch) {
+		case 'd':		/* backward compatible */
+			break;
+		case 'f':
+		case 'r':		/* backward compatible */
+			if (from)
+			    err(FATAL, "multiple -f options");
+			from = optarg;
+			break;
+		case 'l':
+			lockfile++;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (!*argv)
+		usage();
+
+	/*
+	 * If from not specified, use the name from getlogin() if the
+	 * uid matches, otherwise, use the name from the password file
+	 * corresponding to the uid.
+	 */
+	uid = getuid();
+	if (!from && (!(from = getlogin()) ||
+	    !(pw = getpwnam(from)) || pw->pw_uid != uid))
+		from = (pw = getpwuid(uid)) ? pw->pw_name : "???";
+
+	fd = store(from);
+	for (eval = 0; *argv; ++argv)
+		eval |= deliver(fd, *argv, lockfile);
+	exit(eval);
+}
+
+store(from)
+	char *from;
+{
+	FILE *fp;
+	time_t tval;
+	int fd, eline;
+	char *tn, line[2048];
+
+	tn = strdup(_PATH_LOCTMP);
+	if ((fd = mkstemp(tn)) == -1 || !(fp = fdopen(fd, "w+")))
+		err(FATAL, "unable to open temporary file");
+	(void)unlink(tn);
+	free(tn);
+
+	(void)time(&tval);
+	(void)fprintf(fp, "From %s %s", from, ctime(&tval));
+
+	line[0] = '\0';
+	for (eline = 1; fgets(line, sizeof(line), stdin);) {
+		if (line[0] == '\n')
+			eline = 1;
+		else {
+			if (eline && line[0] == 'F' && !bcmp(line, "From ", 5))
+				(void)putc('>', fp);
+			eline = 0;
+		}
+		(void)fprintf(fp, "%s", line);
+		if (ferror(fp))
+			break;
+	}
+
+	/* If message not newline terminated, need an extra. */
+	if (!index(line, '\n'))
+		(void)putc('\n', fp);
+	/* Output a newline; note, empty messages are allowed. */
+	(void)putc('\n', fp);
+
+	(void)fflush(fp);
+	if (ferror(fp))
+		err(FATAL, "temporary file write error");
+	return(fd);
+}
+
+deliver(fd, name, lockfile)
+	int fd;
+	char *name;
+	int lockfile;
+{
+	struct stat sb;
+	struct passwd *pw;
+	int created, mbfd, nr, nw, off, rval=0, lfd=-1;
+	char biffmsg[100], buf[8*1024], path[MAXPATHLEN], lpath[MAXPATHLEN];
+	off_t curoff;
+
+	/*
+	 * Disallow delivery to unknown names -- special mailboxes can be
+	 * handled in the sendmail aliases file.
+	 */
+	if (!(pw = getpwnam(name))) {
+		err(NOTFATAL, "unknown name: %s", name);
+		return(1);
+	}
+
+	(void)sprintf(path, "%s/%s", _PATH_MAILDIR, name);
+
+	if(lockfile) {
+		(void)sprintf(lpath, "%s/%s.lock", _PATH_MAILDIR, name);
+
+		if((lfd = open(lpath, O_CREAT|O_WRONLY|O_EXCL,
+		    S_IRUSR|S_IWUSR)) < 0) {
+			err(NOTFATAL, "%s: %s", lpath, strerror(errno));
+			return(1);
+		}
+	}
+
+	if (!(created = lstat(path, &sb)) &&
+	    (sb.st_nlink != 1 || S_ISLNK(sb.st_mode))) {
+		err(NOTFATAL, "%s: linked file", path);
+		return(1);
+	}
+	if((mbfd = open(path, O_APPEND|O_WRONLY|O_EXLOCK,
+	    S_IRUSR|S_IWUSR)) < 0) {
+		if ((mbfd = open(path, O_APPEND|O_CREAT|O_WRONLY|O_EXLOCK,
+		    S_IRUSR|S_IWUSR)) < 0) {
+		err(NOTFATAL, "%s: %s", path, strerror(errno));
+		return(1);
+	}
+	}
+
+	curoff = lseek(mbfd, 0, SEEK_END);
+	(void)sprintf(biffmsg, "%s@%qd\n", name, curoff);
+	if (lseek(fd, 0, SEEK_SET) == (off_t)-1) {
+		err(FATAL, "temporary file: %s", strerror(errno));
+		rval = 1;
+		goto bad;
+	}
+
+	while ((nr = read(fd, buf, sizeof(buf))) > 0)
+		for (off = 0; off < nr;  off += nw)
+			if ((nw = write(mbfd, buf + off, nr - off)) < 0) {
+				err(NOTFATAL, "%s: %s", path, strerror(errno));
+				goto trunc;
+			}
+	if (nr < 0) {
+		err(FATAL, "temporary file: %s", strerror(errno));
+trunc:		(void)ftruncate(mbfd, curoff);
+		rval = 1;
+	}
+
+	/*
+	 * Set the owner and group.  Historically, binmail repeated this at
+	 * each mail delivery.  We no longer do this, assuming that if the
+	 * ownership or permissions were changed there was a reason for doing
+	 * so.
+	 */
+bad:
+	if(lockfile) {
+		if(lfd >= 0) {
+			unlink(lpath);
+			close(lfd);
+		}
+	}
+	if (created) 
+		(void)fchown(mbfd, pw->pw_uid, pw->pw_gid);
+
+	(void)fsync(mbfd);		/* Don't wait for update. */
+	(void)close(mbfd);		/* Implicit unlock. */
+
+	if (!rval)
+		notifybiff(biffmsg);
+	return(rval);
+}
+
+void
+notifybiff(msg)
+	char *msg;
+{
+	static struct sockaddr_in addr;
+	static int f = -1;
+	struct hostent *hp;
+	struct servent *sp;
+	int len;
+
+	if (!addr.sin_family) {
+		/* Be silent if biff service not available. */
+		if (!(sp = getservbyname("biff", "udp")))
+			return;
+		if (!(hp = gethostbyname("localhost"))) {
+			err(NOTFATAL, "localhost: %s", strerror(errno));
+			return;
+		}
+		addr.sin_len = sizeof(struct sockaddr_in);
+		addr.sin_family = hp->h_addrtype;
+		addr.sin_port = sp->s_port;
+		bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
+	}
+	if (f < 0 && (f = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
+		err(NOTFATAL, "socket: %s", strerror(errno));
+		return;
+	}
+	len = strlen(msg) + 1;
+	if (sendto(f, msg, len, 0, (struct sockaddr *)&addr, sizeof(addr))
+	    != len)
+		err(NOTFATAL, "sendto biff: %s", strerror(errno));
+}
+
+void
+usage()
+{
+	err(FATAL, "usage: mail.local [-f from] user ...");
+}
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+void
+#if __STDC__
+err(int isfatal, const char *fmt, ...)
+#else
+err(isfatal, fmt)
+	int isfatal;
+	char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	vsyslog(LOG_ERR, fmt, ap);
+	va_end(ap);
+	if (isfatal)
+		exit(1);
+}
diff --git a/libexec/mail.local/pathnames.h b/libexec/mail.local/pathnames.h
new file mode 100644
index 00000000000..bf5b783ec74
--- /dev/null
+++ b/libexec/mail.local/pathnames.h
@@ -0,0 +1,38 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * 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 acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ *	from: @(#)pathnames.h	5.3 (Berkeley) 1/17/91
+ *	$Id: pathnames.h,v 1.1 1995/10/18 08:43:19 deraadt Exp $
+ */
+#include <paths.h>
+
+#define _PATH_LOCTMP	"/tmp/local.XXXXXX"