Attachment 2961 Details for Bug 5067 – Patch to 2.6.9 to allow forward host name lookup as described

[patch] Patch to 2.6.9 to allow forward host name lookup as described

HostNameLookup.patch (text/plain), 1.27 KB, created by Paul Williamson on 2007-11-09 23:06:00 UTC

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Creator: Paul Williamson

Created: 2007-11-09 23:06:00 UTC

Size: 1.27 KB

patch

obsolete

>--- access_old.c	2007-11-10 15:47:51.644148816 +1100
>+++ access.c	2007-11-10 15:51:49.369009144 +1100
>@@ -211,6 +211,46 @@ static int match_address(char *addr, cha
> 	return ret;
> }
> 
>+static int match_hostlookup(char *addr, char *tok)
>+{
>+	struct hostent *hp;
>+	char *p;
>+ 	unsigned int len;
>+
>+
>+	p = strchr(tok,'/');
>+	if (p) {
>+		*p = '\0';
>+		len = p - tok;
>+	} else
>+		len = strlen(tok);
>+
>+	/* Fail quietly if tok is a an address) */
>+	if (strspn(tok, ".0123456789") != len
>+#ifdef INET6
>+	    && strchr(tok, ':') == NULL
>+#endif
>+	)
>+		;
>+  	else {
>+		return 0;
>+	}
>+
>+	hp = gethostbyname(tok);
>+	if (hp == NULL) {
>+     		return 0;
>+	} else {
>+		unsigned int i;
>+		for  (i=0; hp -> h_addr_list[i] != NULL; i++) {
>+			char *tok = inet_ntoa( *( struct in_addr*)( hp -> h_addr_list[i]));
>+			if (match_address(addr, tok))
>+				return 1;
>+     		}
>+	}
>+	return 0;
>+}
>+
>+
> static int access_match(char *list, char *addr, char *host)
> {
> 	char *tok;
>@@ -224,7 +264,7 @@ static int access_match(char *list, char
> 		strlower(host);
> 
> 	for (tok = strtok(list2, " ,\t"); tok; tok = strtok(NULL, " ,\t")) {
>-		if (match_hostname(host, tok) || match_address(addr, tok)) {
>+		if (match_hostname(host, tok) || match_address(addr, tok) || match_hostlookup(addr, tok)) {
> 			free(list2);
> 			return 1;
> 		}

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Attachments on bug 5067: 2961