src/: Report errors in user or groups names more consistently

-  Don't print the user name; if it's bad, it might be dangerous.
-  Print the string "user" or "group" before the error message.
-  Print the errno string to be consistent.

Signed-off-by: Alejandro Colomar <[email protected]>

Author: alejandro-colomar

src/chfn.c

@@ -11,10 +11,12 @@
 
 #ident "$Id$"
 
+#include <errno.h>
 #include <fcntl.h>
 #include <pwd.h>
 #include <signal.h>
 #include <stdio.h>
+#include <string.h>
 #include <sys/types.h>
 #include <getopt.h>
 
@@ -651,7 +653,7 @@ int main (int argc, char **argv)
 	 */
 	if (optind < argc) {
 		if (!is_valid_user_name (argv[optind])) {
-			fprintf (stderr, _("%s: Provided user name is not a valid name\n"), Prog);
+			fprintf(stderr, _("%s: user: %s\n"), Prog, strerror(errno));
 			fail_exit (E_NOPERM);
 		}
 		user = argv[optind];

src/chsh.c

@@ -11,10 +11,12 @@
 
 #ident "$Id$"
 
+#include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <pwd.h>
 #include <stdio.h>
+#include <string.h>
 #include <sys/types.h>
 
 #include "chkname.h"
@@ -479,7 +481,7 @@ int main (int argc, char **argv)
 	 */
 	if (optind < argc) {
 		if (!is_valid_user_name (argv[optind])) {
-			fprintf (stderr, _("%s: Provided user name is not a valid name\n"), Prog);
+			fprintf(stderr, _("%s: user: %s\n"), Prog, strerror(errno));
 			fail_exit (1);
 		}
 		user = argv[optind];

src/groupadd.c

@@ -12,6 +12,7 @@
 #ident "$Id$"
 
 #include <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <grp.h>
@@ -256,9 +257,7 @@ static void
 check_new_name(void)
 {
 	if (!is_valid_group_name(group_name)) {
-		fprintf(stderr, _("%s: '%s' is not a valid group name\n"),
-			Prog, group_name);
-
+		fprintf(stderr, _("%s: group: %s\n"), Prog, strerror(errno));
 		fail_exit (E_BAD_ARG);
 	}
 

src/groupmod.c

@@ -12,6 +12,7 @@
 #ident "$Id$"
 
 #include <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <grp.h>
@@ -381,9 +382,7 @@ check_new_name(void)
 	}
 
 	if (!is_valid_group_name(group_newname)) {
-		fprintf(stderr,
-			_("%s: invalid group name '%s'\n"),
-			Prog, group_newname);
+		fprintf(stderr, _("%s: group: %s\n"), Prog, strerror(errno));
 		exit(E_BAD_ARG);
 	}
 

src/grpck.c

@@ -10,11 +10,13 @@
 
 #include <config.h>
 
+#include <errno.h>
 #include <fcntl.h>
+#include <getopt.h>
 #include <grp.h>
 #include <pwd.h>
 #include <stdio.h>
-#include <getopt.h>
+#include <string.h>
 
 #include "chkname.h"
 #include "commonio.h"
@@ -563,7 +565,7 @@ static void check_grp_file (bool *errors, bool *changed)
 		 */
 		if (!is_valid_group_name (grp->gr_name)) {
 			*errors = true;
-			printf (_("invalid group name '%s'\n"), grp->gr_name);
+			printf(_("group: %s\n"), strerror(errno));
 		}
 
 		/*

src/newgrp.c

@@ -14,6 +14,7 @@
 #include <grp.h>
 #include <pwd.h>
 #include <stdio.h>
+#include <string.h>
 #include <sys/types.h>
 
 #include "agetpass.h"
@@ -478,9 +479,8 @@ int main (int argc, char **argv)
 		 */
 		if ((argc > 0) && (argv[0][0] != '-')) {
 			if (!is_valid_group_name (argv[0])) {
-				fprintf (
-					stderr, _("%s: provided group is not a valid group name\n"),
-					Prog);
+				fprintf(stderr, _("%s: group: %s\n"),
+					Prog, strerror(errno));
 				goto failure;
 			}
 			group = argv[0];
@@ -515,9 +515,8 @@ int main (int argc, char **argv)
 			goto failure;
 		} else if (argv[0] != NULL) {
 			if (!is_valid_group_name (argv[0])) {
-				fprintf (
-					stderr, _("%s: provided group is not a valid group name\n"),
-					Prog);
+				fprintf(stderr, _("%s: group: %s\n"),
+					Prog, strerror(errno));
 				goto failure;
 			}
 			group = argv[0];

src/newusers.c

@@ -291,9 +291,7 @@ static int add_group (const char *name, const char *gid, gid_t *ngid, uid_t uid)
 
 	/* Check if this is a valid group name */
 	if (!is_valid_group_name (grent.gr_name)) {
-		fprintf (stderr,
-		         _("%s: invalid group name '%s'\n"),
-		         Prog, grent.gr_name);
+		fprintf(stderr, _("%s: group: %s\n"), Prog, strerror(errno));
 		free (grent.gr_name);
 		return -1;
 	}
@@ -387,7 +385,7 @@ static int add_user (const char *name, uid_t uid, gid_t gid)
 	struct passwd pwent;
 
 	if (!is_valid_user_name(name)) {
-		fprintf(stderr, _("%s: invalid user name '%s'\n"), Prog, name);
+		fprintf(stderr, _("%s: user: %s\n"), Prog, strerror(errno));
 		return -1;
 	}
 

src/passwd.c

@@ -17,6 +17,7 @@
 #include <pwd.h>
 #include <signal.h>
 #include <stdio.h>
+#include <string.h>
 #include <sys/types.h>
 #include <time.h>
 
@@ -915,7 +916,7 @@ main(int argc, char **argv)
 	myname = xstrdup (pw->pw_name);
 	if (optind < argc) {
 		if (!is_valid_user_name (argv[optind])) {
-			fprintf (stderr, _("%s: Provided user name is not a valid name\n"), Prog);
+			fprintf(stderr, _("%s: user: %s\n"), Prog, strerror(errno));
 			fail_exit (E_NOPERM);
 		}
 		name = argv[optind];

src/pwck.c

@@ -12,11 +12,13 @@
 
 #ident "$Id$"
 
+#include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <grp.h>
 #include <pwd.h>
 #include <stdio.h>
+#include <string.h>
 
 #include "chkname.h"
 #include "commonio.h"
@@ -466,7 +468,7 @@ static void check_pw_file (bool *errors, bool *changed)
 		}
 
 		if (!is_valid_user_name(pwd->pw_name)) {
-			printf(_("invalid user name '%s'\n"), pwd->pw_name);
+			printf(_("user: %s\n"), strerror(errno));
 			*errors = true;
 		}
 

src/useradd.c

@@ -1493,9 +1493,7 @@ static void process_flags (int argc, char **argv)
 
 		user_name = argv[optind];
 		if (!is_valid_user_name(user_name)) {
-			fprintf(stderr,
-			        _("%s: invalid user name '%s'\n"),
-			        Prog, user_name);
+			fprintf(stderr, _("%s: user: %s\n"), Prog, strerror(errno));
 #ifdef WITH_AUDIT
 			audit_logger (AUDIT_ADD_USER, Prog,
 			              "add-user",

src/usermod.c

@@ -27,6 +27,7 @@
 #endif				/* USE_PAM */
 #endif				/* ACCT_TOOLS_SETUID */
 #include <stdio.h>
+#include <string.h>
 #include <strings.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -1123,9 +1124,8 @@ process_flags(int argc, char **argv)
 				/*@notreached@*/break;
 			case 'l':
 				if (!is_valid_user_name(optarg)) {
-					fprintf(stderr,
-						_("%s: invalid user name '%s'\n"),
-						Prog, optarg);
+					fprintf(stderr, _("%s: user: %s\n"),
+						Prog, strerror(errno));
 					exit (E_BAD_ARG);
 				}
 				lflg = true;