1 files changed, 149 insertions, 0 deletions
diff --git a/usr.sbin/pw/pwupd.c b/usr.sbin/pw/pwupd.c
new file mode 100644
index 0000000..ee23952
--- /dev/null
+++ b/usr.sbin/pw/pwupd.c
@@ -0,0 +1,149 @@
+/*-
+ * Copyright (C) 1996
+ *	David L. Nugent.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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 const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <pwd.h>
+#include <libutil.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pwupd.h"
+
+char *
+getpwpath(char const * file)
+{
+	static char pathbuf[MAXPATHLEN];
+
+	snprintf(pathbuf, sizeof pathbuf, "%s/%s", conf.etcpath, file);
+
+	return (pathbuf);
+}
+
+static int
+pwdb_check(void)
+{
+	int             i = 0;
+	pid_t           pid;
+	char           *args[10];
+
+	args[i++] = _PATH_PWD_MKDB;
+	args[i++] = "-C";
+
+	if (strcmp(conf.etcpath, _PATH_PWD) != 0) {
+		args[i++] = "-d";
+		args[i++] = conf.etcpath;
+	}
+	args[i++] = getpwpath(_MASTERPASSWD);
+	args[i] = NULL;
+
+	if ((pid = fork()) == -1)	/* Error (errno set) */
+		i = errno;
+	else if (pid == 0) {	/* Child */
+		execv(args[0], args);
+		_exit(1);
+	} else {		/* Parent */
+		waitpid(pid, &i, 0);
+		if (WEXITSTATUS(i))
+			i = EIO;
+	}
+
+	return (i);
+}
+
+static int
+pw_update(struct passwd * pwd, char const * user)
+{
+	struct passwd	*pw = NULL;
+	struct passwd	*old_pw = NULL;
+	int		 rc, pfd, tfd;
+
+	if ((rc = pwdb_check()) != 0)
+		return (rc);
+
+	if (pwd != NULL)
+		pw = pw_dup(pwd);
+
+	if (user != NULL)
+		old_pw = GETPWNAM(user);
+
+	if (pw_init(conf.etcpath, NULL))
+		err(1, "pw_init()");
+	if ((pfd = pw_lock()) == -1) {
+		pw_fini();
+		err(1, "pw_lock()");
+	}
+	if ((tfd = pw_tmp(-1)) == -1) {
+		pw_fini();
+		err(1, "pw_tmp()");
+	}
+	if (pw_copy(pfd, tfd, pw, old_pw) == -1) {
+		pw_fini();
+		err(1, "pw_copy()");
+	}
+	/*
+	 * in case of deletion of a user, the whole database
+	 * needs to be regenerated
+	 */
+	if (pw_mkdb(pw != NULL ? pw->pw_name : NULL) == -1) {
+		pw_fini();
+		err(1, "pw_mkdb()");
+	}
+	free(pw);
+	pw_fini();
+
+	return (0);
+}
+
+int
+addpwent(struct passwd * pwd)
+{
+
+	return (pw_update(pwd, NULL));
+}
+
+int
+chgpwent(char const * login, struct passwd * pwd)
+{
+
+	return (pw_update(pwd, login));
+}
+
+int
+delpwent(struct passwd * pwd)
+{
+
+	return (pw_update(NULL, pwd->pw_name));
+}