X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fuserspec.c;h=cb1f8a73fda6556bb8518802c4a51cfde0a81704;hb=310f220f3dc11206e8c8374c2350d8e5f74c8427;hp=67f1583335c513b3043a01a83e5484bdf6644f6c;hpb=300424a2d37b17d304be2783ed40f2efa4d950c0;p=gnulib.git

diff --git a/lib/userspec.c b/lib/userspec.c
index 67f158333..cb1f8a73f 100644
--- a/lib/userspec.c
+++ b/lib/userspec.c
@@ -1,5 +1,5 @@
 /* userspec.c -- Parse a user and group string.
-   Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+   Copyright (C) 1989-1992, 1997, 1998 Free Software Foundation, Inc.
 
    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
@@ -12,27 +12,27 @@
    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.  */
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+
+#if HAVE_CONFIG_H
+# include <config.h>
 #endif
 
 #ifdef __GNUC__
-#define alloca __builtin_alloca
-#else
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#else
-#ifdef _AIX
- #pragma alloca
+# define alloca __builtin_alloca
 #else
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #  pragma alloca
+#  else
 char *alloca ();
-#endif
-#endif
+#  endif
+# endif
 #endif
 
 #include <stdio.h>
@@ -40,21 +40,21 @@ char *alloca ();
 #include <pwd.h>
 #include <grp.h>
 
-#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
-#include <string.h>
-#ifndef index
-#define index strchr
-#endif
+#if HAVE_STRING_H
+# include <string.h>
 #else
-#include <strings.h>
+# include <strings.h>
+# ifndef strchr
+#  define strchr index
+# endif
 #endif
 
-#ifdef STDC_HEADERS
-#include <stdlib.h>
+#if STDC_HEADERS
+# include <stdlib.h>
 #endif
 
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
 #endif
 
 #ifndef _POSIX_VERSION
@@ -63,9 +63,12 @@ struct group *getgrnam ();
 struct group *getgrgid ();
 #endif
 
-#ifdef _POSIX_SOURCE
-#define endpwent()
-#define endgrent()
+#ifndef HAVE_ENDGRENT
+# define endgrent() ((void) 0)
+#endif
+
+#ifndef HAVE_ENDPWENT
+# define endpwent() ((void) 0)
 #endif
 
 /* Perform the equivalent of the statement `dest = strdup (src);',
@@ -82,14 +85,15 @@ struct group *getgrgid ();
 
 #define isdigit(c) ((c) >= '0' && (c) <= '9')
 
+#ifndef strdup
 char *strdup ();
+#endif
 
 /* Return nonzero if STR represents an unsigned decimal integer,
    otherwise return 0. */
 
 static int
-isnumber (str)
-     const char *str;
+is_number (const char *str)
 {
   for (; *str; str++)
     if (!isdigit (*str))
@@ -110,11 +114,8 @@ isnumber (str)
    Return NULL if successful, a static error message string if not.  */
 
 const char *
-parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
-     const char *spec_arg;
-     uid_t *uid;
-     gid_t *gid;
-     char **username_arg, **groupname_arg;
+parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid,
+		 char **username_arg, char **groupname_arg)
 {
   static const char *tired = "virtual memory exhausted";
   const char *error_msg;
@@ -131,9 +132,9 @@ parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
   V_STRDUP (spec, spec_arg);
 
   /* Find the separator if there is one.  */
-  separator = index (spec, ':');
+  separator = strchr (spec, ':');
   if (separator == NULL)
-    separator = index (spec, '.');
+    separator = strchr (spec, '.');
 
   /* Replace separator with a NUL.  */
   if (separator != NULL)
@@ -150,13 +151,22 @@ parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
   if (u == NULL && g == NULL)
     return "can not omit both user and group";
 
+#ifdef __DJGPP__
+  /* Pretend that we are the user U whose group is G.  This makes
+     pwd and grp functions ``know'' about the UID and GID of these.  */
+  if (u && !is_number (u))
+    setenv ("USER", u, 1);
+  if (g && !is_number (g))
+    setenv ("GROUP", g, 1);
+#endif
+
   if (u != NULL)
     {
       pwd = getpwnam (u);
       if (pwd == NULL)
 	{
 
-	  if (!isnumber (u))
+	  if (!is_number (u))
 	    error_msg = "invalid user";
 	  else
 	    {
@@ -202,7 +212,7 @@ parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
       grp = getgrnam (g);
       if (grp == NULL)
 	{
-	  if (!isnumber (g))
+	  if (!is_number (g))
 	    error_msg = "invalid group";
 	  else
 	    *gid = atoi (g);
@@ -244,7 +254,7 @@ parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
 
 #ifdef TEST
 
-#define NULL_CHECK(s) ((s) == NULL ? "(null)" : (s))
+# define NULL_CHECK(s) ((s) == NULL ? "(null)" : (s))
 
 int
 main (int argc, char **argv)