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authorJakub Hrozek <jhrozek@redhat.com>2013-04-30 16:40:00 +0200
committerJakub Hrozek <jhrozek@redhat.com>2013-05-03 20:25:46 +0200
commita398adc5b40381fc567a2aee1841b26af78aea17 (patch)
tree4de66827028e07dd9faf66f605c83050ad23afd6 /src
parent5a4239490c7fb7d732180a9d40f27f0247c56631 (diff)
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resolver: Return PTR record as string
This is a requirement to update the PTR records. Includes a unit test.
Diffstat (limited to 'src')
-rw-r--r--src/resolv/async_resolv.c36
-rw-r--r--src/resolv/async_resolv.h4
-rw-r--r--src/tests/resolv-tests.c104
3 files changed, 144 insertions, 0 deletions
diff --git a/src/resolv/async_resolv.c b/src/resolv/async_resolv.c
index 60d9e05b..f673a25c 100644
--- a/src/resolv/async_resolv.c
+++ b/src/resolv/async_resolv.c
@@ -1416,6 +1416,42 @@ resolv_get_string_address_index(TALLOC_CTX *mem_ctx,
return address;
}
+char *
+resolv_get_string_ptr_address(TALLOC_CTX *mem_ctx,
+ int family, uint8_t *address)
+{
+ char *straddr;
+
+ if (family == AF_INET6) {
+ int i;
+ char hexbyte[3];
+
+ straddr = talloc_strdup(mem_ctx, "\0");
+ if (!straddr) {
+ return NULL;
+ }
+
+ for (i = 15; i >= 0; i--) {
+ snprintf(hexbyte, 3, "%02x", address[i]);
+ straddr = talloc_asprintf_append(straddr, "%c.%c.",
+ hexbyte[1], hexbyte[0]);
+ }
+ straddr = talloc_asprintf_append(straddr, "ip6.arpa.");
+ } else if (family == AF_INET) {
+ straddr = talloc_asprintf(mem_ctx,
+ "%u.%u.%u.%u.in-addr.arpa.",
+ (address[3]),
+ (address[2]),
+ (address[1]),
+ (address[0]));
+ } else {
+ DEBUG(SSSDBG_CRIT_FAILURE, ("Unknown address family\n"));
+ return NULL;
+ }
+
+ return straddr;
+}
+
struct sockaddr_storage *
resolv_get_sockaddr_address(TALLOC_CTX *mem_ctx, struct resolv_hostent *hostent,
int port)
diff --git a/src/resolv/async_resolv.h b/src/resolv/async_resolv.h
index 3a025588..d759a82f 100644
--- a/src/resolv/async_resolv.h
+++ b/src/resolv/async_resolv.h
@@ -121,6 +121,10 @@ resolv_get_string_address_index(TALLOC_CTX *mem_ctx,
struct resolv_hostent *hostent,
unsigned int addrindex);
+char *
+resolv_get_string_ptr_address(TALLOC_CTX *mem_ctx,
+ int family, uint8_t *address);
+
#define resolv_get_string_address(mem_ctx, hostent) \
resolv_get_string_address_index(mem_ctx, hostent, 0)
diff --git a/src/tests/resolv-tests.c b/src/tests/resolv-tests.c
index dd212c05..49fe2a5f 100644
--- a/src/tests/resolv-tests.c
+++ b/src/tests/resolv-tests.c
@@ -95,6 +95,62 @@ static int test_loop(struct resolv_test_ctx *data)
return data->error;
}
+struct resolv_hostent *
+test_create_rhostent(TALLOC_CTX *mem_ctx,
+ const char *hostname, const char *address)
+{
+ struct resolv_hostent *rhostent;
+ int ret;
+ int family;
+
+ rhostent = talloc_zero(mem_ctx, struct resolv_hostent);
+ if (!rhostent) {
+ return NULL;
+ }
+
+ rhostent->name = talloc_strdup(rhostent, hostname);
+ rhostent->addr_list = talloc_array(rhostent, struct resolv_addr *, 2);
+ if (!rhostent->name ||
+ !rhostent->addr_list) {
+ goto fail;
+ }
+
+ rhostent->addr_list[0] = talloc_zero(rhostent->addr_list,
+ struct resolv_addr);
+ if (!rhostent->addr_list[0]) {
+ goto fail;
+ }
+ rhostent->addr_list[0]->ipaddr = talloc_array(rhostent->addr_list[0],
+ uint8_t,
+ sizeof(struct in6_addr));
+ if (!rhostent->addr_list[0]->ipaddr) {
+ goto fail;
+ }
+
+ family = AF_INET;
+ ret = inet_pton(family, address,
+ rhostent->addr_list[0]->ipaddr);
+ if (ret != 1) {
+ family = AF_INET6;
+ ret = inet_pton(family, address,
+ rhostent->addr_list[0]->ipaddr);
+ if (ret != 1) {
+ goto fail;
+ }
+ }
+
+ rhostent->addr_list[0]->ttl = RESOLV_DEFAULT_TTL;
+ rhostent->addr_list[1] = NULL;
+ rhostent->family = family;
+ rhostent->aliases = NULL;
+
+ return rhostent;
+
+fail:
+ talloc_free(rhostent);
+ return NULL;
+}
+
START_TEST(test_copy_hostent)
{
void *ctx;
@@ -155,6 +211,53 @@ START_TEST(test_copy_hostent)
}
END_TEST
+START_TEST(test_address_to_string)
+{
+ void *ctx;
+ struct resolv_hostent *rhe;
+ char *str_addr;
+ char *ptr_addr;
+
+ ctx = talloc_new(global_talloc_context);
+ fail_if(ctx == NULL);
+ ck_leaks_push(ctx);
+
+ rhe = test_create_rhostent(ctx, "www.example.com", "1.2.3.4");
+ fail_if(rhe == NULL);
+
+ str_addr = resolv_get_string_address_index(ctx, rhe, 0);
+ fail_if(str_addr == NULL);
+ fail_unless(strcmp(str_addr, "1.2.3.4") == 0, "Unexpected address\n");
+ talloc_free(str_addr);
+
+ ptr_addr = resolv_get_string_ptr_address(ctx, rhe->family,
+ rhe->addr_list[0]->ipaddr);
+ fail_if(ptr_addr == NULL);
+ fail_unless(strcmp(ptr_addr, "4.3.2.1.in-addr.arpa.") == 0, "Unexpected PTR address\n");
+ talloc_free(ptr_addr);
+
+ talloc_free(rhe);
+
+ rhe = test_create_rhostent(ctx, "www6.example.com", "2607:f8b0:400c:c03::6a");
+ fail_if(rhe == NULL);
+
+ str_addr = resolv_get_string_address_index(ctx, rhe, 0);
+ fail_if(str_addr == NULL);
+ fail_unless(strcmp(str_addr, "2607:f8b0:400c:c03::6a") == 0, "Unexpected address\n");
+ talloc_free(str_addr);
+
+ ptr_addr = resolv_get_string_ptr_address(ctx, rhe->family,
+ rhe->addr_list[0]->ipaddr);
+ fail_if(ptr_addr == NULL);
+ fail_unless(strcmp(ptr_addr,
+ "a.6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.c.0.c.0.0.4.0.b.8.f.7.0.6.2.ip6.arpa.") == 0, "Unexpected PTR address\n");
+ talloc_free(ptr_addr);
+
+ talloc_free(rhe);
+ ck_leaks_pop(ctx);
+}
+END_TEST
+
static void test_ip_addr(struct tevent_req *req)
{
int recv_status;
@@ -791,6 +894,7 @@ Suite *create_resolv_suite(void)
tcase_add_checked_fixture(tc_resolv, ck_leak_check_setup, ck_leak_check_teardown);
/* Do some testing */
tcase_add_test(tc_resolv, test_copy_hostent);
+ tcase_add_test(tc_resolv, test_address_to_string);
tcase_add_test(tc_resolv, test_resolv_ip_addr);
tcase_add_test(tc_resolv, test_resolv_sort_srv_reply);
if (use_net_test) {