BSD 4.4 Lite usr.sbin Sources

5 files changed, 473 insertions, 0 deletions

diff --git a/usr.sbin/vipw/Makefile b/usr.sbin/vipw/Makefile
new file mode 100644
index 0000000..03a187e
--- /dev/null
+++ b/usr.sbin/vipw/Makefile
@@ -0,0 +1,7 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	vipw
+SRCS=	pw_util.c vipw.c
+MAN8=	vipw.0
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/vipw/pw_util.c b/usr.sbin/vipw/pw_util.c
new file mode 100644
index 0000000..9873f74
--- /dev/null
+++ b/usr.sbin/vipw/pw_util.c
@@ -0,0 +1,204 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	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
+static char sccsid[] = "@(#)pw_util.c	8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+/*
+ * This file is used by all the "password" programs; vipw(8), chpass(1),
+ * and passwd(1).
+ */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pw_util.h"
+
+extern char *tempname;
+
+void
+pw_init()
+{
+	struct rlimit rlim;
+
+	/* Unlimited resource limits. */
+	rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
+	(void)setrlimit(RLIMIT_CPU, &rlim);
+	(void)setrlimit(RLIMIT_FSIZE, &rlim);
+	(void)setrlimit(RLIMIT_STACK, &rlim);
+	(void)setrlimit(RLIMIT_DATA, &rlim);
+	(void)setrlimit(RLIMIT_RSS, &rlim);
+
+	/* Don't drop core (not really necessary, but GP's). */
+	rlim.rlim_cur = rlim.rlim_max = 0;
+	(void)setrlimit(RLIMIT_CORE, &rlim);
+
+	/* Turn off signals. */
+	(void)signal(SIGALRM, SIG_IGN);
+	(void)signal(SIGHUP, SIG_IGN);
+	(void)signal(SIGINT, SIG_IGN);
+	(void)signal(SIGPIPE, SIG_IGN);
+	(void)signal(SIGQUIT, SIG_IGN);
+	(void)signal(SIGTERM, SIG_IGN);
+	(void)signal(SIGTSTP, SIG_IGN);
+	(void)signal(SIGTTOU, SIG_IGN);
+
+	/* Create with exact permissions. */
+	(void)umask(0);
+}
+
+static int lockfd;
+
+int
+pw_lock()
+{
+	/* 
+	 * If the master password file doesn't exist, the system is hosed.
+	 * Might as well try to build one.  Set the close-on-exec bit so
+	 * that users can't get at the encrypted passwords while editing.
+	 * Open should allow flock'ing the file; see 4.4BSD.	XXX
+	 */
+	lockfd = open(_PATH_MASTERPASSWD, O_RDONLY, 0);
+	if (lockfd < 0 || fcntl(lockfd, F_SETFD, 1) == -1)
+		err(1, "%s", _PATH_MASTERPASSWD);
+	if (flock(lockfd, LOCK_EX|LOCK_NB))
+		errx(1, "the password db file is busy");
+	return (lockfd);
+}
+
+int
+pw_tmp()
+{
+	static char path[MAXPATHLEN] = _PATH_MASTERPASSWD;
+	int fd;
+	char *p;
+
+	if (p = strrchr(path, '/'))
+		++p;
+	else
+		p = path;
+	strcpy(p, "pw.XXXXXX");
+	if ((fd = mkstemp(path)) == -1)
+		err(1, "%s", path);
+	tempname = path;
+	return (fd);
+}
+
+int
+pw_mkdb()
+{
+	int pstat;
+	pid_t pid;
+
+	warnx("rebuilding the database...");
+	(void)fflush(stderr);
+	if (!(pid = vfork())) {
+		execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
+		pw_error(_PATH_PWD_MKDB, 1, 1);
+	}
+	pid = waitpid(pid, &pstat, 0);
+	if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0)
+		return (0);
+	warnx("done");
+	return (1);
+}
+
+void
+pw_edit(notsetuid)
+	int notsetuid;
+{
+	int pstat;
+	pid_t pid;
+	char *p, *editor;
+
+	if (!(editor = getenv("EDITOR")))
+		editor = _PATH_VI;
+	if (p = strrchr(editor, '/'))
+		++p;
+	else 
+		p = editor;
+
+	if (!(pid = vfork())) {
+		if (notsetuid) {
+			(void)setgid(getgid());
+			(void)setuid(getuid());
+		}
+		execlp(editor, p, tempname, NULL);
+		_exit(1);
+	}
+	pid = waitpid(pid, (int *)&pstat, 0);
+	if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0)
+		pw_error(editor, 1, 1);
+}
+
+void
+pw_prompt()
+{
+	int c;
+
+	(void)printf("re-edit the password file? [y]: ");
+	(void)fflush(stdout);
+	c = getchar();
+	if (c != EOF && c != '\n')
+		while (getchar() != '\n');
+	if (c == 'n')
+		pw_error(NULL, 0, 0);
+}
+
+void
+pw_error(name, err, eval)
+	char *name;
+	int err, eval;
+{
+	if (err)
+		warn(name);
+
+	warnx("%s: unchanged", _PATH_MASTERPASSWD);
+	(void)unlink(tempname);
+	exit(eval);
+}
diff --git a/usr.sbin/vipw/pw_util.h b/usr.sbin/vipw/pw_util.h
new file mode 100644
index 0000000..9ea3672
--- /dev/null
+++ b/usr.sbin/vipw/pw_util.h
@@ -0,0 +1,42 @@
+/*-
+ * Copyright (c) 1994
+ *	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.
+ *
+ *	@(#)pw_util.h	8.2 (Berkeley) 4/1/94
+ */
+
+void	pw_edit __P((int));
+void	pw_error __P((char *, int, int));
+void	pw_init __P((void));
+int	pw_lock __P((void));
+int	pw_mkdb __P((void));
+void	pw_prompt __P((void));
+int	pw_tmp __P((void));
diff --git a/usr.sbin/vipw/vipw.8 b/usr.sbin/vipw/vipw.8
new file mode 100644
index 0000000..18ef5ed
--- /dev/null
+++ b/usr.sbin/vipw/vipw.8
@@ -0,0 +1,93 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	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.
+.\"
+.\"     @(#)vipw.8	8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993
+.Dt VIPW 8
+.Os BSD 4
+.Sh NAME
+.Nm vipw
+.Nd edit the password file
+.Sh SYNOPSIS
+.Nm vipw
+.Sh DESCRIPTION
+.Nm Vipw
+edits the password file after setting the appropriate locks,
+and does any necessary processing after the password file is unlocked.
+If the password file is already locked for editing by another user,
+.Nm vipw
+will ask you
+to try again later. The default editor for
+.Nm vipw
+is
+.Xr vi 1 .
+.Pp
+.Nm Vipw
+performs a number of consistency checks on the password entries,
+and will not allow a password file with a
+.Dq mangled
+entry to be
+installed.
+If
+.Nm vipw
+rejects the new password file, the user is prompted to re-enter
+the edit session.
+.Pp
+Once the information has been verified,
+.Nm vipw
+uses
+.Xr pwd_mkdb 8
+to update the user database.  This is run in the background, and,
+at very large sites could take several minutes.  Until this update
+is completed, the password file is unavailable for other updates
+and the new information is not available to programs.
+.Sh ENVIRONMENT
+If the following environment variable exists it will be utilized by
+.Nm vipw :
+.Bl -tag -width EDITOR
+.It Ev EDITOR
+The editor specified by the string
+.Ev EDITOR
+will be invoked instead of the default editor
+.Xr vi 1 .
+.El
+.Sh SEE ALSO
+.Xr chpass 1 ,
+.Xr passwd 1 ,
+.Xr passwd 5 ,
+.Xr adduser 8 ,
+.Xr pwd_mkdb 8
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.0 .
diff --git a/usr.sbin/vipw/vipw.c b/usr.sbin/vipw/vipw.c
new file mode 100644
index 0000000..c671623
--- /dev/null
+++ b/usr.sbin/vipw/vipw.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 1987, 1993, 1994
+ *	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
+static char copyright[] =
+"@(#) Copyright (c) 1987, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)vipw.c	8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pw_util.h"
+
+char *tempname;
+
+void	copyfile __P((int, int));
+void	usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	int pfd, tfd;
+	struct stat begin, end;
+	int ch;
+
+	while ((ch = getopt(argc, argv, "")) != EOF)
+		switch (ch) {
+		case '?':
+		default:
+			usage();
+		}
+	
+	argc -= optind;
+	argv += optind;
+
+	if (argc != 0)
+		usage();
+
+	pw_init();
+	pfd = pw_lock();
+	tfd = pw_tmp();
+	copyfile(pfd, tfd);
+	(void)close(tfd);
+
+	for (;;) {
+		if (stat(tempname, &begin))
+			pw_error(tempname, 1, 1);
+		pw_edit(0);
+		if (stat(tempname, &end))
+			pw_error(tempname, 1, 1);
+		if (begin.st_mtime == end.st_mtime) {
+			warnx("no changes made");
+			pw_error((char *)NULL, 0, 0);
+		}
+		if (pw_mkdb())
+			break;
+		pw_prompt();
+	}
+	exit(0);
+}
+
+void
+copyfile(from, to)
+	int from, to;
+{
+	int nr, nw, off;
+	char buf[8*1024];
+	
+	while ((nr = read(from, buf, sizeof(buf))) > 0)
+		for (off = 0; off < nr; nr -= nw, off += nw)
+			if ((nw = write(to, buf + off, nr)) < 0)
+				pw_error(tempname, 1, 1);
+	if (nr < 0)
+		pw_error(_PATH_MASTERPASSWD, 1, 1);
+}
+
+void
+usage()
+{
+
+	(void)fprintf(stderr, "usage: vipw\n");
+	exit(1);
+}