From b096321a5a02dda0b6b71ba0f9c4d8feacd979e4 Mon Sep 17 00:00:00 2001
From: Michal Zidek <mzidek@redhat.com>
Date: Aug 23 2012 16:33:39 +0000
Subject: Fix: IPv6 address with square brackets doesn't work.


https://fedorahosted.org/sssd/ticket/1365

---

diff --git a/src/providers/ad/ad_common.c b/src/providers/ad/ad_common.c
index d1589c2..2749a96 100644
--- a/src/providers/ad/ad_common.c
+++ b/src/providers/ad/ad_common.c
@@ -189,6 +189,13 @@ ad_servers_init(TALLOC_CTX *mem_ctx,
             continue;
         }
 
+        /* It could be ipv6 address in square brackets. Remove
+         * the brackets if needed. */
+        ret = remove_ipv6_brackets(list[i]);
+        if (ret != EOK) {
+            goto done;
+        }
+
         ret = be_fo_add_server(bectx, AD_SERVICE_NAME, list[i], 0, NULL, primary);
         if (ret && ret != EEXIST) {
             DEBUG(SSSDBG_FATAL_FAILURE, ("Failed to add server\n"));
diff --git a/src/providers/ipa/ipa_common.c b/src/providers/ipa/ipa_common.c
index 2e50473..fe7ac91 100644
--- a/src/providers/ipa/ipa_common.c
+++ b/src/providers/ipa/ipa_common.c
@@ -841,6 +841,13 @@ errno_t ipa_servers_init(struct be_ctx *ctx,
             continue;
         }
 
+        /* It could be ipv6 address in square brackets. Remove
+         * the brackets if needed. */
+        ret = remove_ipv6_brackets(list[i]);
+        if (ret != EOK) {
+            goto done;
+        }
+
         ret = be_fo_add_server(ctx, "IPA", list[i], 0, NULL, primary);
         if (ret && ret != EEXIST) {
             DEBUG(SSSDBG_FATAL_FAILURE, ("Failed to add server\n"));
diff --git a/src/providers/krb5/krb5_common.c b/src/providers/krb5/krb5_common.c
index bd7a302..0e96b80 100644
--- a/src/providers/krb5/krb5_common.c
+++ b/src/providers/krb5/krb5_common.c
@@ -520,7 +520,13 @@ errno_t krb5_servers_init(struct be_ctx *ctx,
             continue;
         }
 
-        port_str = strrchr(server_spec, ':');
+        /* Do not try to get port number if last character is ']' */
+        if (server_spec[strlen(server_spec) - 1] != ']') {
+            port_str = strrchr(server_spec, ':');
+        } else {
+            port_str = NULL;
+        }
+
         if (port_str == NULL) {
             port = 0;
         } else {
@@ -564,6 +570,13 @@ errno_t krb5_servers_init(struct be_ctx *ctx,
             }
         }
 
+        /* It could be ipv6 address in square brackets. Remove
+         * the brackets if needed. */
+        ret = remove_ipv6_brackets(server_spec);
+        if (ret != EOK) {
+            goto done;
+        }
+
         ret = be_fo_add_server(ctx, service_name, server_spec, (int) port,
                                list[i], primary);
         if (ret && ret != EEXIST) {
diff --git a/src/providers/ldap/ldap_common.c b/src/providers/ldap/ldap_common.c
index ce75875..c11d036 100644
--- a/src/providers/ldap/ldap_common.c
+++ b/src/providers/ldap/ldap_common.c
@@ -1185,6 +1185,13 @@ errno_t sdap_urls_init(struct be_ctx *ctx,
 
         talloc_steal(service, list[i]);
 
+        /* It could be ipv6 address in square brackets. Remove
+         * the brackets if needed. */
+        ret = remove_ipv6_brackets(lud->lud_host);
+        if (ret != EOK) {
+            goto done;
+        }
+
         ret = be_fo_add_server(ctx, service->name, lud->lud_host,
                                lud->lud_port, list[i], primary);
         ldap_free_urldesc(lud);
diff --git a/src/util/util.c b/src/util/util.c
index f1aaebc..b812ef1 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -611,3 +611,26 @@ void to_sized_string(struct sized_string *out, const char *in)
     }
 }
 
+/* This function only removes first and last
+ * character if the first character was '['.
+ *
+ * NOTE: This means, that ipv6addr must NOT be followed
+ * by port number.
+ */
+errno_t
+remove_ipv6_brackets(char *ipv6addr)
+{
+    size_t len;
+
+    if (ipv6addr && ipv6addr[0] == '[') {
+        len = strlen(ipv6addr);
+        if (len < 3) {
+            return EINVAL;
+        }
+
+        memmove(ipv6addr, &ipv6addr[1], len - 2);
+        ipv6addr[len -2] = '\0';
+    }
+
+    return EOK;
+}
diff --git a/src/util/util.h b/src/util/util.h
index 7ff91af..685702f 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -516,6 +516,15 @@ errno_t sss_filter_sanitize(TALLOC_CTX *mem_ctx,
 char *
 sss_escape_ip_address(TALLOC_CTX *mem_ctx, int family, const char *addr);
 
+/* This function only removes first and last
+ * character if the first character was '['.
+ *
+ * NOTE: This means, that ipv6addr must NOT be followed
+ * by port number.
+ */
+errno_t
+remove_ipv6_brackets(char *ipv6addr);
+
 /* from sss_tc_utf8.c */
 char *
 sss_tc_utf8_str_tolower(TALLOC_CTX *mem_ctx, const char *s);