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authorStefan Metzmacher <metze@samba.org>2011-04-24 21:20:19 +0200
committerStefan Metzmacher <metze@samba.org>2011-04-25 17:41:56 +0200
commit4bfe2d5655d97fbc7e65744425b5a098e77f5ba1 (patch)
treee9d2b54120ba7e7c154c860895ea61a9eff56c39 /source3
parent40e0079bae731f691a620a280b74ada951018458 (diff)
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s3:lib/access: normalize IPv4 mapped IPv6 addresses in both directions (bug #7383)
metze
Diffstat (limited to 'source3')
-rw-r--r--source3/lib/access.c31
1 files changed, 17 insertions, 14 deletions
diff --git a/source3/lib/access.c b/source3/lib/access.c
index a7475a5edc..f9cd9d547c 100644
--- a/source3/lib/access.c
+++ b/source3/lib/access.c
@@ -182,29 +182,32 @@ static bool string_match(const char *tok,const char *s)
bool client_match(const char *tok, const void *item)
{
const char **client = (const char **)item;
+ const char *tok_addr = tok;
+ const char *cli_addr = client[ADDR_INDEX];
+
+ /*
+ * tok and client[ADDR_INDEX] can be an IPv4 mapped to IPv6,
+ * we try and match the IPv4 part of address only.
+ * Bug #5311 and #7383.
+ */
+
+ if (strnequal(tok_addr, "::ffff:",7)) {
+ tok_addr += 7;
+ }
+
+ if (strnequal(cli_addr,"::ffff:",7)) {
+ cli_addr += 7;
+ }
/*
* Try to match the address first. If that fails, try to match the host
* name if available.
*/
- if (string_match(tok, client[ADDR_INDEX])) {
+ if (string_match(tok_addr, cli_addr)) {
return true;
}
- if (strnequal(client[ADDR_INDEX],"::ffff:",7) &&
- !strnequal(tok, "::ffff:",7)) {
- /* client[ADDR_INDEX] is an IPv4 mapped to IPv6, but
- * the list item is not. Try and match the IPv4 part of
- * address only. This will happen a lot on IPv6 enabled
- * systems with IPv4 allow/deny lists in smb.conf.
- * Bug #5311. JRA.
- */
- if (string_match(tok, (client[ADDR_INDEX])+7)) {
- return true;
- }
- }
-
if (client[NAME_INDEX][0] != 0) {
if (string_match(tok, client[NAME_INDEX])) {
return true;