Make NSHost more tolerant of bad system setups.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@8673 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,9 @@
+2001-01-18  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* Source/NSHost.m: New method ([-_addName:]) to add a name to a host.
+	Use it to add the local hostname to the 127.0.0.1 host if there is
+	no IP address set up for the local machine.
+
 2001-01-17  Mirko Viviani  <mirko.viviani@rccr.cremona.it>
 
 	* Source/GSXML.m|.h ([GSXMLDocument -stringValue]): dump document in a

Source/GSXML.m

@@ -242,15 +242,15 @@ loadEntityFunction(const char *url, const char *eid, xmlParserCtxtPtr *ctxt);
   xmlSaveFile([filename cString], lib);
 }
 
-- (NSString *) stringValue
+- (NSString*) stringValue
 {
-  NSString *string = nil;
+  NSString	*string = nil;
-  xmlChar  *buf = NULL;
+  xmlChar	*buf = NULL;
-  int       length;
+  int		length;
 
   xmlDocDumpMemory(lib, &buf, &length);
 
-  if(buf && length)
+  if (buf != 0 && length > 0)
     {
       string = [NSString_class stringWithCString: buf length: length];
       xmlFree(buf);

Source/NSHost.m

@@ -57,6 +57,7 @@ static NSString			*myHostName = nil;
 
 
 @interface NSHost (Private)
+- (void) _addName: (NSString*)name;
 + (struct hostent*) _entryForAddress: (NSString*)address;
 - (id) _initWithHostEntry: (struct hostent*)entry key: (NSString*)key;
 + (NSMutableSet*) _localAddresses;
@@ -64,6 +65,21 @@ static NSString			*myHostName = nil;
 
 @implementation NSHost (Private)
 
+- (void) _addName: (NSString*)name
+{
+  NSMutableSet	*s = [_names mutableCopy];
+
+  name = [name copy];
+  [s addObject: name];
+  ASSIGNCOPY(_names, s);
+  RELEASE(s);
+  if (_hostCacheEnabled == YES)
+    {
+      [_hostCache setObject: self forKey: name];
+    }
+  RELEASE(name);
+}
+
 + (struct hostent*) _entryForAddress: (NSString*)address
 {
   struct hostent	*h = 0;
@@ -287,9 +303,22 @@ static NSString			*myHostName = nil;
 	  h = gethostbyname((char*)[name cString]);
 	  if (h == 0)
 	    {
-	      NSLog(@"Host '%@' not found using 'gethostbyname()' - perhaps "
+	      if ([name isEqualToString: myHostName] == YES)
-		@"the hostname is wrong or networking is not set up on your "
+		{
-		@"machine", name);
+		  NSLog(@"No network address appears to be available "
+		    @"for this machine (%@) - using loopback address "
+		    @"(127.0.0.1)", name);
+		  NSLog(@"You probably need a line like '"
+		    @"127.0.0.1 %@ localhost' in your /etc/hosts file");
+		  host = [self hostWithAddress: @"127.0.0.1"];
+		  [host _addName: name];
+		}
+	      else
+		{
+		  NSLog(@"Host '%@' not found using 'gethostbyname()' - "
+		    @"perhaps the hostname is wrong or networking is not "
+		    @"set up on your machine", name);
+		}
 	    }
 	  else
 	    {