[svn-upgrade] Integrating new upstream version, shadow (19990709)

2007-10-07 11:44:02 +00:00
parent 9c72ed9062
commit 45c6603cc8
350 changed files with 89554 additions and 0 deletions
--- a/src/pwconv.c
+++ b/src/pwconv.c
@ -0,0 +1,188 @@
+/*
+ * pwconv - create or update /etc/shadow with information from
+ * /etc/passwd.
+ *
+ * It is more like SysV pwconv, slightly different from the
+ * original Shadow pwconv.  Depends on "x" as password in
+ * /etc/passwd which means that the password has already been
+ * moved to /etc/shadow.  There is no need to move /etc/npasswd
+ * to /etc/passwd, password files are updated using library
+ * routines with proper locking.
+ *
+ * Can be used to update /etc/shadow after adding/deleting users
+ * by editing /etc/passwd.  There is no man page yet, but this
+ * program should be close to pwconv(1M) on Solaris 2.x.
+ *
+ * Warning: make sure that all users have "x" as the password in
+ * /etc/passwd before running this program for the first time on
+ * a system which already has shadow passwords.  Anything else
+ * (like "*" from old versions of the shadow suite) will replace
+ * the user's encrypted password in /etc/shadow.
+ *
+ * Doesn't currently support pw_age information in /etc/passwd,
+ * and doesn't support DBM files.  Add it if you need it...
+ *
+ * Copyright (C) 1996-1997, Marek Michalkiewicz
+ * <marekm@i17linuxb.ists.pwr.wroc.pl>
+ * This program may be freely used and distributed for any purposes.
+ * If you improve it, please send me your changes.  Thanks!
+ */
+
+#include <config.h>
+
+#include "rcsid.h"
+RCSID(PKG_VER "$Id: pwconv.c,v 1.10 1999/06/07 16:40:45 marekm Exp $")
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <pwd.h>
+#include "prototypes.h"
+#include "defines.h"
+#include "pwio.h"
+#include "shadowio.h"
+#include "getdef.h"
+
+/*
+ * exit status values
+ */
+
+#define E_SUCCESS	0	/* success */
+#define E_NOPERM	1	/* permission denied */
+#define E_USAGE		2	/* bad command syntax */
+#define E_FAILURE	3	/* unexpected failure, nothing done */
+#define E_MISSING	4	/* unexpected failure, passwd file missing */
+#define E_PWDBUSY	5	/* passwd file(s) busy */
+#define E_BADENTRY	6	/* bad shadow entry */
+
+static int
+	shadow_locked = 0,
+	passwd_locked = 0;
+
+/* local function prototypes */
+static void fail_exit P_((int));
+int main P_((int, char **));
+
+static void
+fail_exit(int status)
+{
+	if (shadow_locked)
+		spw_unlock();
+	if (passwd_locked)
+		pw_unlock();
+	exit(status);
+}
+
+int
+main(int argc, char **argv)
+{
+	const struct passwd *pw;
+	struct passwd pwent;
+	const struct spwd *sp;
+	struct spwd spent;
+	char *Prog = argv[0];
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+
+	if (!pw_lock()) {
+		fprintf(stderr, _("%s: can't lock passwd file\n"), Prog);
+		fail_exit(E_PWDBUSY);
+	}
+	passwd_locked++;
+	if (!pw_open(O_RDWR)) {
+		fprintf(stderr, _("%s: can't open passwd file\n"), Prog);
+		fail_exit(E_MISSING);
+	}
+
+	if (!spw_lock()) {
+		fprintf(stderr, _("%s: can't lock shadow file\n"), Prog);
+		fail_exit(E_PWDBUSY);
+	}
+	shadow_locked++;
+	if (!spw_open(O_CREAT | O_RDWR)) {
+		fprintf(stderr, _("%s: can't open shadow file\n"), Prog);
+		fail_exit(E_FAILURE);
+	}
+
+	/*
+	 * Remove /etc/shadow entries for users not in /etc/passwd.
+	 */
+	spw_rewind();
+	while ((sp = spw_next())) {
+		if (pw_locate(sp->sp_namp))
+			continue;
+
+		if (!spw_remove(sp->sp_namp)) {
+			/*
+			 * This shouldn't happen (the entry exists) but...
+			 */
+			fprintf(stderr,
+				_("%s: can't remove shadow entry for %s\n"),
+				Prog, sp->sp_namp);
+			fail_exit(E_FAILURE);
+		}
+	}
+
+	/*
+	 * Update shadow entries which don't have "x" as pw_passwd.
+	 * Add any missing shadow entries.
+	 */
+	pw_rewind();
+	while ((pw = pw_next())) {
+		sp = spw_locate(pw->pw_name);
+		if (sp) {
+			/* do we need to update this entry? */
+			if (strcmp(pw->pw_passwd, SHADOW_PASSWD_STRING) == 0)
+				continue;
+			/* update existing shadow entry */
+			spent = *sp;
+		} else {
+			/* add new shadow entry */
+			memset(&spent, 0, sizeof spent);
+			spent.sp_namp = pw->pw_name;
+			spent.sp_min = getdef_num("PASS_MIN_DAYS", -1);
+			spent.sp_max = getdef_num("PASS_MAX_DAYS", -1);
+			spent.sp_warn = getdef_num("PASS_WARN_AGE", -1);
+			spent.sp_inact = -1;
+			spent.sp_expire = -1;
+			spent.sp_flag = -1;
+		}
+		spent.sp_pwdp = pw->pw_passwd;
+		spent.sp_lstchg = time((time_t *) 0) / (24L*3600L);
+		if (!spw_update(&spent)) {
+			fprintf(stderr,
+				_("%s: can't update shadow entry for %s\n"),
+				Prog, spent.sp_namp);
+			fail_exit(E_FAILURE);
+		}
+		/* remove password from /etc/passwd */
+		pwent = *pw;
+		pwent.pw_passwd = SHADOW_PASSWD_STRING;  /* XXX warning: const */
+		if (!pw_update(&pwent)) {
+			fprintf(stderr,
+				_("%s: can't update passwd entry for %s\n"),
+				Prog, pwent.pw_name);
+			fail_exit(E_FAILURE);
+		}
+	}
+
+	if (!spw_close()) {
+		fprintf(stderr, _("%s: can't update shadow file\n"), Prog);
+		fail_exit(E_FAILURE);
+	}
+	if (!pw_close()) {
+		fprintf(stderr, _("%s: can't update passwd file\n"), Prog);
+		fail_exit(E_FAILURE);
+	}
+	chmod(PASSWD_FILE "-", 0600);  /* /etc/passwd- (backup file) */
+	spw_unlock();
+	pw_unlock();
+	exit(E_SUCCESS);
+}