tests: Add test for socket_wrapper fd-passing support

Signed-off-by: Anoop C S <anoopcs@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 72cda718758b90cc07081b462e6735c463cbbdad..fce69e4355af7440f5fa368f49f0aacfcc0f28cb 100644 (file)
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -61,7 +61,7 @@ set(SWRAP_TESTS
     ${SWRAP_THREADED_TESTS})
 
 if (HAVE_STRUCT_MSGHDR_MSG_CONTROL)
-    set(SWRAP_TESTS ${SWRAP_TESTS} test_sendmsg_recvmsg_fd)
+    set(SWRAP_TESTS ${SWRAP_TESTS} test_sendmsg_recvmsg_fd test_echo_tcp_sendmsg_recvmsg_fd)
 endif (HAVE_STRUCT_MSGHDR_MSG_CONTROL)
 
 function(ADD_CMOCKA_TEST_ENVIRONMENT _TEST_NAME)
@@ -116,6 +116,10 @@ foreach(_SWRAP_TEST ${SWRAP_TESTS})
     add_cmocka_test_environment(${_SWRAP_TEST})
 endforeach()
 
+if (HAVE_STRUCT_MSGHDR_MSG_CONTROL)
+    set_tests_properties(test_echo_tcp_sendmsg_recvmsg_fd PROPERTIES WILL_FAIL TRUE)
+endif (HAVE_STRUCT_MSGHDR_MSG_CONTROL)
+
 if (HELGRIND_TESTING)
     find_program(VALGRIND_EXECUTABLE valgrind)
     if (VALGRIND_EXECUTABLE)

diff --git a/tests/test_echo_tcp_sendmsg_recvmsg_fd.c b/tests/test_echo_tcp_sendmsg_recvmsg_fd.c
new file mode 100644 (file)
index 0000000..8ae1a60
--- /dev/null
+++ b/tests/test_echo_tcp_sendmsg_recvmsg_fd.c
@@ -0,0 +1,188 @@
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+
+#include "config.h"
+#include "torture.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+static int setup_echo_srv_tcp_ipv4(void **state)
+{
+       torture_setup_echo_srv_tcp_ipv4(state);
+
+       return 0;
+}
+
+static int teardown(void **state)
+{
+       torture_teardown_echo_srv(state);
+
+       return 0;
+}
+
+static void test_tcp_sendmsg_recvmsg_fd(void **state)
+{
+       struct torture_address addr = {
+               .sa_socklen = sizeof(struct sockaddr_in),
+       };
+       int pass_sock_fd;
+       int sv[2];
+       int child_fd, parent_fd;
+       pid_t pid;
+       int rc;
+
+       (void) state; /* unused */
+
+       /* create socket file descriptor to be passed */
+       pass_sock_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+       assert_int_not_equal(pass_sock_fd, -1);
+
+       addr.sa.in.sin_family = AF_INET;
+       addr.sa.in.sin_port = htons(torture_server_port());
+
+       rc = inet_pton(addr.sa.in.sin_family,
+                      torture_server_address(AF_INET),
+                      &addr.sa.in.sin_addr);
+       assert_int_equal(rc, 1);
+
+       rc = connect(pass_sock_fd, &addr.sa.s, addr.sa_socklen);
+       assert_int_equal(rc, 0);
+
+       /* create unix domain socket stream */
+       rc = socketpair(AF_LOCAL, SOCK_STREAM, 0, sv);
+       assert_int_not_equal(rc, -1);
+
+       parent_fd = sv[0];
+       child_fd = sv[1];
+
+       pid = fork();
+       assert_int_not_equal(pid, -1);
+
+       if (pid == 0) {
+               /* Child */
+               struct torture_address peer_addr = {
+                       .sa_socklen = sizeof(struct sockaddr_in),
+               };
+               struct msghdr child_msg;
+               char cmsgbuf[CMSG_SPACE(sizeof(int))];
+               struct cmsghdr *cmsg;
+               int rcv_sock_fd, port;
+               ssize_t ret;
+               char send_buf[64] = {0};
+               char recv_buf[64] = {0};
+               char ipstr[INET_ADDRSTRLEN];
+               char byte = { 0, };
+               struct iovec iov;
+
+               iov.iov_base = &byte;
+               iov.iov_len = 1;
+
+               memset(&child_msg, 0, sizeof(child_msg));
+               child_msg.msg_iov = &iov;
+               child_msg.msg_iovlen = 1;
+               child_msg.msg_control = cmsgbuf;
+               child_msg.msg_controllen = sizeof(cmsgbuf);
+
+               rc = recvmsg(child_fd, &child_msg, 0);
+               assert_int_equal(rc, iov.iov_len);
+               assert_int_equal(byte, '!');
+
+               cmsg = CMSG_FIRSTHDR(&child_msg);
+               assert_non_null(cmsg);
+               assert_int_equal(cmsg->cmsg_type, SCM_RIGHTS);
+
+               memcpy(&rcv_sock_fd, CMSG_DATA(cmsg), sizeof(rcv_sock_fd));
+               assert_int_not_equal(rcv_sock_fd, -1);
+
+               /* extract peer info from received socket fd */
+               ret = getpeername(rcv_sock_fd, &peer_addr.sa.s, &peer_addr.sa_socklen);
+               assert_int_not_equal(ret, -1);
+
+               port = ntohs(peer_addr.sa.in.sin_port);
+               inet_ntop(AF_INET, &peer_addr.sa.in.sin_addr, ipstr, sizeof(ipstr));
+
+               /* check whether it is the same socket previously connected */
+               assert_string_equal(ipstr, torture_server_address(AF_INET));
+               assert_int_equal(port, torture_server_port());
+
+               snprintf(send_buf, sizeof(send_buf), "packet");
+
+               ret = write(rcv_sock_fd,
+                           send_buf,
+                           sizeof(send_buf));
+               assert_int_not_equal(ret, -1);
+
+               ret = read(rcv_sock_fd,
+                          recv_buf,
+                          sizeof(recv_buf));
+               assert_int_not_equal(ret, -1);
+
+               assert_memory_equal(send_buf, recv_buf, sizeof(send_buf));
+
+               exit(0);
+       } else {
+               /* Parent */
+               struct msghdr parent_msg;
+               struct cmsghdr *cmsg;
+               char cmsgbuf[CMSG_SPACE(sizeof(pass_sock_fd))];
+               char byte = '!';
+               struct iovec iov;
+               int cs;
+
+               (void) state; /* unused */
+
+               iov.iov_base = &byte;
+               iov.iov_len = 1;
+
+               memset(&parent_msg, 0, sizeof(parent_msg));
+               parent_msg.msg_iov = &iov;
+               parent_msg.msg_iovlen = 1;
+               parent_msg.msg_control = cmsgbuf;
+               parent_msg.msg_controllen = sizeof(cmsgbuf);
+
+               cmsg = CMSG_FIRSTHDR(&parent_msg);
+               cmsg->cmsg_level = SOL_SOCKET;
+               cmsg->cmsg_type = SCM_RIGHTS;
+               cmsg->cmsg_len = CMSG_LEN(sizeof(pass_sock_fd));
+
+               /* place previously connected socket fd as ancillary data */
+               memcpy(CMSG_DATA(cmsg), &pass_sock_fd, sizeof(pass_sock_fd));
+               parent_msg.msg_controllen = cmsg->cmsg_len;
+
+               rc = sendmsg(parent_fd, &parent_msg, 0);
+               assert_int_not_equal(rc, -1);
+
+               alarm(5);           /* 5 seconds timeout for the child */
+               waitpid(pid, &cs, 0);
+               if (WIFEXITED(cs)) {
+                       assert_int_equal(WEXITSTATUS(cs), 0);
+               }
+       }
+}
+
+int main(void) {
+       int rc;
+
+       const struct CMUnitTest tests[] = {
+               cmocka_unit_test_setup_teardown(test_tcp_sendmsg_recvmsg_fd,
+                                setup_echo_srv_tcp_ipv4,
+                                teardown)
+       };
+
+       rc = cmocka_run_group_tests(tests, NULL, NULL);
+
+       return rc;
+}