diff options
Diffstat (limited to 'src/plugins/acl/acl.c')
| -rw-r--r-- | src/plugins/acl/acl.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/plugins/acl/acl.c b/src/plugins/acl/acl.c index 6b120563c9b..dc9caa66177 100644 --- a/src/plugins/acl/acl.c +++ b/src/plugins/acl/acl.c @@ -408,6 +408,50 @@ validate_and_reset_acl_counters (acl_main_t * am, u32 acl_index) } static int +acl_api_ip4_invalid_prefix (void *ip4_pref_raw, u8 ip4_prefix_len) +{ + ip4_address_t ip4_addr; + ip4_address_t ip4_mask; + ip4_address_t ip4_masked_addr; + + memcpy (&ip4_addr, ip4_pref_raw, sizeof (ip4_addr)); + ip4_preflen_to_mask (ip4_prefix_len, &ip4_mask); + ip4_masked_addr.as_u32 = ip4_addr.as_u32 & ip4_mask.as_u32; + int ret = (ip4_masked_addr.as_u32 != ip4_addr.as_u32); + if (ret) + { + clib_warning + ("inconsistent addr %U for prefix len %d; (%U when masked)", + format_ip4_address, ip4_pref_raw, ip4_prefix_len, format_ip4_address, + &ip4_masked_addr); + } + return ret; +} + +static int +acl_api_ip6_invalid_prefix (void *ip6_pref_raw, u8 ip6_prefix_len) +{ + ip6_address_t ip6_addr; + ip6_address_t ip6_mask; + ip6_address_t ip6_masked_addr; + + memcpy (&ip6_addr, ip6_pref_raw, sizeof (ip6_addr)); + ip6_preflen_to_mask (ip6_prefix_len, &ip6_mask); + ip6_masked_addr.as_u64[0] = ip6_addr.as_u64[0] & ip6_mask.as_u64[0]; + ip6_masked_addr.as_u64[1] = ip6_addr.as_u64[1] & ip6_mask.as_u64[1]; + int ret = ((ip6_masked_addr.as_u64[0] != ip6_addr.as_u64[0]) + || (ip6_masked_addr.as_u64[1] != ip6_addr.as_u64[1])); + if (ret) + { + clib_warning + ("inconsistent addr %U for prefix len %d; (%U when masked)", + format_ip6_address, ip6_pref_raw, ip6_prefix_len, format_ip6_address, + &ip6_masked_addr); + } + return ret; +} + +static int acl_add_list (u32 count, vl_api_acl_rule_t rules[], u32 * acl_list_index, u8 * tag) { @@ -421,6 +465,43 @@ acl_add_list (u32 count, vl_api_acl_rule_t rules[], clib_warning ("API dbg: acl_add_list index %d tag %s", *acl_list_index, tag); + /* check if what they request is consistent */ + for (i = 0; i < count; i++) + { + if (rules[i].is_ipv6) + { + if (rules[i].src_ip_prefix_len > 128) + return VNET_API_ERROR_INVALID_VALUE; + if (rules[i].dst_ip_prefix_len > 128) + return VNET_API_ERROR_INVALID_VALUE; + if (acl_api_ip6_invalid_prefix + (&rules[i].src_ip_addr, rules[i].src_ip_prefix_len)) + return VNET_API_ERROR_INVALID_SRC_ADDRESS; + if (acl_api_ip6_invalid_prefix + (&rules[i].dst_ip_addr, rules[i].dst_ip_prefix_len)) + return VNET_API_ERROR_INVALID_DST_ADDRESS; + } + else + { + if (rules[i].src_ip_prefix_len > 32) + return VNET_API_ERROR_INVALID_VALUE; + if (rules[i].dst_ip_prefix_len > 32) + return VNET_API_ERROR_INVALID_VALUE; + if (acl_api_ip4_invalid_prefix + (&rules[i].src_ip_addr, rules[i].src_ip_prefix_len)) + return VNET_API_ERROR_INVALID_SRC_ADDRESS; + if (acl_api_ip4_invalid_prefix + (&rules[i].dst_ip_addr, rules[i].dst_ip_prefix_len)) + return VNET_API_ERROR_INVALID_DST_ADDRESS; + } + if (ntohs (rules[i].srcport_or_icmptype_first) > + ntohs (rules[i].srcport_or_icmptype_last)) + return VNET_API_ERROR_INVALID_VALUE_2; + if (ntohs (rules[i].dstport_or_icmpcode_first) > + ntohs (rules[i].dstport_or_icmpcode_last)) + return VNET_API_ERROR_INVALID_VALUE_2; + } + if (*acl_list_index != ~0) { /* They supplied some number, let's see if this ACL exists */ |