path: root/debian/patches/401_cppw_src.dpatch

#! /bin/sh /usr/share/dpatch/dpatch-run
## 401_cppw_src.dpatch by  Nicolas FRANCOIS <nicolas.francois@centraliens.net>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Add cppw / cpgr

@DPATCH@
--- /dev/null
+++ b/src/cppw.c
@@ -0,0 +1,238 @@
+/*
+  cppw, cpgr  copy with locking given file over the password or group file
+  with -s will copy with locking given file over shadow or gshadow file
+
+  Copyright (C) 1999 Stephen Frost <sfrost@snowman.net>
+
+  Based on vipw, vigr by:
+  Copyright (C) 1997 Guy Maor <maor@ece.utexas.edu>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+  */
+
+#include <config.h>
+#include "defines.h"
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <utime.h>
+#include "exitcodes.h"
+#include "prototypes.h"
+#include "pwio.h"
+#include "shadowio.h"
+#include "groupio.h"
+#include "sgroupio.h"
+
+
+const char *Prog;
+
+const char *filename, *filenewname;
+static bool filelocked = false;
+static int (*unlock) (void);
+
+/* local function prototypes */
+static int create_copy (FILE *fp, const char *dest, struct stat *sb);
+static void cppwexit (const char *msg, int syserr, int ret);
+static void cppwcopy (const char *file,
+                      const char *in_file,
+                      int (*file_lock) (void),
+                      int (*file_unlock) (void));
+
+static int create_copy (FILE *fp, const char *dest, struct stat *sb)
+{
+	struct utimbuf ub;
+	FILE *bkfp;
+	int c;
+	mode_t mask;
+
+	mask = umask (077);
+	bkfp = fopen (dest, "w");
+	(void) umask (mask);
+	if (NULL == bkfp) {
+		return -1;
+	}
+
+	rewind (fp);
+	while ((c = getc (fp)) != EOF) {
+		if (putc (c, bkfp) == EOF) {
+			break;
+		}
+	}
+
+	if (   (c != EOF)
+	    || (fflush (bkfp) != 0)) {
+		(void) fclose (bkfp);
+		(void) unlink (dest);
+		return -1;
+	}
+	if (   (fsync (fileno (bkfp)) != 0)
+	    || (fclose (bkfp) != 0)) {
+		(void) unlink (dest);
+		return -1;
+	}
+
+	ub.actime = sb->st_atime;
+	ub.modtime = sb->st_mtime;
+	if (   (utime (dest, &ub) != 0)
+	    || (chmod (dest, sb->st_mode) != 0)
+	    || (chown (dest, sb->st_uid, sb->st_gid) != 0)) {
+		(void) unlink (dest);
+		return -1;
+	}
+	return 0;
+}
+
+static void cppwexit (const char *msg, int syserr, int ret)
+{
+	int err = errno;
+	if (filelocked) {
+		(*unlock) ();
+	}
+	if (NULL != msg) {
+		fprintf (stderr, "%s: %s", Prog, msg);
+		if (0 != syserr) {
+			fprintf (stderr, ": %s", strerror (err));
+		}
+		(void) fputs ("\n", stderr);
+	}
+	if (NULL != filename) {
+		fprintf (stderr, _("%s: %s is unchanged\n"), Prog, filename);
+	} else {
+		fprintf (stderr, _("%s: no changes\n"), Prog);
+	}
+
+	exit (ret);
+}
+
+static void cppwcopy (const char *file,
+                      const char *in_file,
+                      int (*file_lock) (void),
+                      int (*file_unlock) (void))
+{
+	struct stat st1;
+	FILE *f;
+	char filenew[1024];
+
+	snprintf (filenew, sizeof filenew, "%s.new", file);
+	unlock = file_unlock;
+	filename = file;
+	filenewname = filenew;
+
+	if (access (file, F_OK) != 0) {
+		cppwexit (file, 1, 1);
+	}
+	if (file_lock () == 0) {
+		cppwexit (_("Couldn't lock file"), 0, 5);
+	}
+	filelocked = true;
+
+	/* file to copy has same owners, perm */
+	if (stat (file, &st1) != 0) {
+		cppwexit (file, 1, 1);
+	}
+	f = fopen (in_file, "r");
+	if (NULL == f) {
+		cppwexit (in_file, 1, 1);
+	}
+	if (create_copy (f, filenew, &st1) != 0) {
+		cppwexit (_("Couldn't make copy"), errno, 1);
+	}
+
+	/* XXX - here we should check filenew for errors; if there are any,
+	 * fail w/ an appropriate error code and let the user manually fix
+	 * it. Use pwck or grpck to do the check.  - Stephen (Shamelessly
+	 * stolen from '--marekm's comment) */
+
+	if (rename (filenew, file) != 0) {
+		fprintf (stderr, _("%s: can't copy %s: %s)\n"),
+                         Prog, filenew, strerror (errno));
+		cppwexit (NULL,0,1);
+	}
+
+	(*file_unlock) ();
+}
+
+int main (int argc, char **argv)
+{
+	int flag;
+	bool cpshadow = false;
+	char *in_file;
+	int e = E_USAGE;
+	bool do_cppw = true;
+
+	(void) setlocale (LC_ALL, "");
+	(void) bindtextdomain (PACKAGE, LOCALEDIR);
+	(void) textdomain (PACKAGE);
+
+	Prog = Basename (argv[0]);
+	if (strcmp (Prog, "cpgr") == 0) {
+		do_cppw = false;
+	}
+
+	while ((flag = getopt (argc, argv, "ghps")) != EOF) {
+		switch (flag) {
+		case 'p':
+			do_cppw = true;
+			break;
+		case 'g':
+			do_cppw = false;
+			break;
+		case 's':
+			cpshadow = true;
+			break;
+		case 'h':
+			e = E_SUCCESS;
+			/*pass through*/
+		default:
+			(void) fputs (_("Usage:\n\
+`cppw <file>' copys over /etc/passwd   `cppw -s <file>' copys over /etc/shadow\n\
+`cpgr <file>' copys over /etc/group    `cpgr -s <file>' copys over /etc/gshadow\n\
+"), (E_SUCCESS != e) ? stderr : stdout);
+			exit (e);
+		}
+	}
+
+	if (argc != optind + 1) {
+		cppwexit (_("wrong number of arguments, -h for usage"),0,1);
+	}
+
+	in_file = argv[optind];
+
+	if (do_cppw) {
+		if (cpshadow) {
+			cppwcopy (SHADOW_FILE, in_file, spw_lock, spw_unlock);
+		} else {
+			cppwcopy (PASSWD_FILE, in_file, pw_lock, pw_unlock);
+		}
+	} else {
+#ifdef SHADOWGRP
+		if (cpshadow) {
+			cppwcopy (SGROUP_FILE, in_file, sgr_lock, sgr_unlock);
+		} else
+#endif				/* SHADOWGRP */
+		{
+			cppwcopy (GROUP_FILE, in_file, gr_lock, gr_unlock);
+		}
+	}
+
+	return 0;
+}
+
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -34,6 +34,7 @@
 bin_PROGRAMS  += su
 endif
 usbin_PROGRAMS = \
+	cppw \
 	chgpasswd \
 	chpasswd \
 	groupadd \
@@ -102,6 +103,7 @@
 chgpasswd_LDADD = $(LDADD) $(LIBPAM_SUID) $(LIBAUDIT) $(LIBSELINUX) $(LIBCRYPT) $(LIBECONF)
 chsh_LDADD     = $(LDADD) $(LIBPAM) $(LIBAUDIT) $(LIBSELINUX) $(LIBCRYPT_NOPAM) $(LIBSKEY) $(LIBMD) $(LIBECONF)
 chpasswd_LDADD = $(LDADD) $(LIBPAM) $(LIBAUDIT) $(LIBSELINUX) $(LIBCRYPT) $(LIBECONF)
+cppw_LDADD     = $(LDADD) $(LIBSELINUX) $(LIBAUDIT)
 expiry_LDADD = $(LDADD) $(LIBECONF)
 gpasswd_LDADD  = $(LDADD) $(LIBAUDIT) $(LIBSELINUX) $(LIBCRYPT) $(LIBECONF)
 groupadd_LDADD = $(LDADD) $(LIBPAM_SUID) $(LIBAUDIT) $(LIBSELINUX) $(LIBECONF) -ldl
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -91,6 +91,7 @@
 src/chgpasswd.c
 src/chpasswd.c
 src/chsh.c
+src/cppw.c
 src/expiry.c
 src/faillog.c
 src/gpasswd.c