ACL related changes

Added changes related to ACL implementation for sweetcomb:

Change-Id: I5e734f77f0c149fb31fdff288fb46a4ece20a870
Signed-off-by: Pavel Kotucek <pavel.kotucek@pantheon.tech>

4 files changed, 68 insertions, 8 deletions

diff --git a/src/plugins/ietf/ietf_nat.c b/src/plugins/ietf/ietf_nat.c
index 9b2890e..9613b52 100644
--- a/src/plugins/ietf/ietf_nat.c
+++ b/src/plugins/ietf/ietf_nat.c
@@ -93,7 +93,7 @@ static int parse_instance_policy_external_ip_address_pool(
     if (sr_xpath_node_name_eq(val->xpath, "pool-id")) {
         SRP_LOG_WRN("%s not supported.", val->xpath);
     } else if(sr_xpath_node_name_eq(val->xpath, "external-ip-pool")) {
-        rc = prefix2address(tmp_str, val->data.string_val, &prefix);
+        rc = prefix2ip4(tmp_str, val->data.string_val, &prefix);
         if (0 != rc) {
             SRP_LOG_ERR_MSG("Error translate");
             return SR_ERR_INVAL_ARG;
@@ -336,7 +336,7 @@ static int parse_instance_mapping_table_mapping_entry(
             return SR_ERR_INVAL_ARG;
         }
 
-        rc = prefix2address(tmp_str, val->data.string_val, NULL);
+        rc = prefix2ip4(tmp_str, val->data.string_val, NULL);
         if (0 != rc) {
             SRP_LOG_ERR_MSG("Error translate");
             return SR_ERR_INVAL_ARG;
@@ -357,7 +357,7 @@ static int parse_instance_mapping_table_mapping_entry(
             return SR_ERR_INVAL_ARG;
         }
 
-        rc = prefix2address(tmp_str, val->data.string_val, NULL);
+        rc = prefix2ip4(tmp_str, val->data.string_val, NULL);
         if (0 != rc) {
             SRP_LOG_ERR_MSG("Error translate");
             return SR_ERR_INVAL_ARG;
diff --git a/src/plugins/sys_util.h b/src/plugins/sys_util.h
index 692a012..3f85537 100644
--- a/src/plugins/sys_util.h
+++ b/src/plugins/sys_util.h
@@ -89,13 +89,12 @@ static inline int ip_prefix_split(const char* ip_prefix)
  * @brief Get IPv4 host address from IPv4 prefix.
  *
  * @param[out] dst Host IPv4 address.
- * @param[in] src IPv4 Prefix.
- * @param[in] length dst buffer length.
+ * @param[in] src IPv4 prefix.
  * @param[out] prefix Get Prefix length, optional value. Can be NULL.
  * @return -1 when failure, 0 on success.
  */
 static inline int
-prefix2address(char *dst, const char *src, uint8_t *prefix_length)
+prefix2ip4(char *dst, const char *src, uint8_t *prefix_length)
 {
     if (!src || !dst)
         return -1;
@@ -104,10 +103,41 @@ prefix2address(char *dst, const char *src, uint8_t *prefix_length)
     if (!p)
         return -1; // '/' not found
 
-    if ((p - src + 1) > VPP_IP4_ADDRESS_STRING_LEN) //+ 1 needed for \0
+    size_t size = p - src;
+    if ((size + 1) > VPP_IP4_ADDRESS_STRING_LEN) //+ 1 needed for \0
         return -1;
 
-    strncpy(dst, src, VPP_IP4_ADDRESS_STRING_LEN);
+    strncpy(dst, src, size);
+
+    if (!prefix_length)
+        *prefix_length = atoi(++p);
+
+    return 0;
+}
+
+/**
+ * @brief Get IPv6 host address from IPv6 prefix.
+ *
+ * @param[out] dst Host IPv6 address.
+ * @param[in] src IPv6 prefix.
+ * @param[out] prefix Get Prefix length, optional value. Can be NULL.
+ * @return -1 when failure, 0 on success.
+ */
+static inline int
+prefix2ip6(char *dst, const char *src, uint8_t *prefix_length)
+{
+    if (!src || !dst)
+        return -1;
+
+    char *p = strchr(src, '/');
+    if (!p)
+        return -1; // '/' not found
+
+    size_t size = p - src;
+    if ((size + 1) > VPP_IP6_ADDRESS_STRING_LEN) //+ 1 needed for \0
+        return -1;
+
+    strncpy(dst, src, size);
 
     if (!prefix_length)
         *prefix_length = atoi(++p);
diff --git a/src/scvpp/inc/scvpp/comm.h b/src/scvpp/inc/scvpp/comm.h
index 8d2b2e2..3e6122e 100644
--- a/src/scvpp/inc/scvpp/comm.h
+++ b/src/scvpp/inc/scvpp/comm.h
@@ -195,6 +195,8 @@ api_name##_all_cb(vapi_ctx_t ctx, void *caller_ctx, vapi_error_e rv, bool is_las
 
 int sc_aton(const char *cp, u8 * buf, size_t length);
 char * sc_ntoa(const u8 * buf);
+int sc_pton(int af, const char *cp, u8 * buf);
+char * sc_ntop(int af, const u8 * buf, char *addr);
 
 /**
  * @brief Function converts the u8 array from network byte order to host byte order.
diff --git a/src/scvpp/src/comm.c b/src/scvpp/src/comm.c
index a065b58..0169d0a 100644
--- a/src/scvpp/src/comm.c
+++ b/src/scvpp/src/comm.c
@@ -99,6 +99,34 @@ char* sc_ntoa(const u8 * buf)
     return inet_ntoa(addr);
 }
 
+int sc_pton(int af, const char *cp, u8 * buf)
+{
+    ARG_CHECK2(false, cp, buf);
+
+    int ret = inet_pton(af, cp, buf);
+
+    if (0 == ret)
+        return -EINVAL;
+
+    return 0;
+}
+
+char* sc_ntop(int af, const u8 * buf, char *addr)
+{
+    ARG_CHECK(NULL, buf);
+    ARG_CHECK(NULL, addr);
+
+    socklen_t size = 0;
+    if (af == AF_INET)
+        size = INET_ADDRSTRLEN;
+    else if (af == AF_INET6)
+        size = INET6_ADDRSTRLEN;
+    else
+        return NULL;
+
+    return inet_ntop(af, (void*)buf, addr, size);
+}
+
 /**
  * @brief Function converts the u8 array from network byte order to host byte order.
  *