| /* IPA receive test */ |
| |
| /* |
| * (C) 2014 by On-Waves |
| * (C) 2014 by sysmocom s.f.m.c. GmbH |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #include <osmocom/abis/e1_input.h> |
| |
| #include <osmocom/abis/ipa.h> |
| #include <osmocom/core/utils.h> |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/logging.h> |
| #include <osmocom/core/application.h> |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <errno.h> |
| #include <err.h> |
| |
| static const char *ipa_test_messages[] = { |
| "Hello IPA", |
| "A longer test message. ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz", |
| "Hello again IPA", |
| "", |
| "Next is empty", |
| NULL, |
| "Bye", |
| "Bye", |
| }; |
| |
| static void append_ipa_message(struct msgb *msg, int proto, const char *text) |
| { |
| int len = 0; |
| unsigned char *l2; |
| |
| if (text) |
| len = strlen(text) + 1; |
| |
| msgb_put_u16(msg, len); |
| msgb_put_u8(msg, proto); |
| |
| l2 = msgb_put(msg, len); |
| if (text) |
| strcpy((char *)l2, text); |
| } |
| |
| static int receive_messages(int fd, struct msgb **pending_msg) |
| { |
| struct msgb *msg; |
| char dummy; |
| int rc; |
| while (1) { |
| if (recv(fd, &dummy, 1, MSG_PEEK) < 1) { |
| rc = -EAGAIN; |
| break; |
| } |
| msg = NULL; |
| rc = ipa_msg_recv_buffered(fd, &msg, pending_msg); |
| |
| fprintf(stderr, |
| "ipa_msg_recv_buffered: %d, msg %s NULL, " |
| "pending_msg %s NULL\n", |
| rc, msg ? "!=" : "==", |
| !pending_msg ? "??" : *pending_msg ? "!=" : "=="); |
| if (pending_msg && !!msg == !!*pending_msg) |
| printf( "got msg %s NULL, pending_msg %s NULL, " |
| "returned: %s\n", |
| msg ? "!=" : "==", |
| *pending_msg ? "!=" : "==", |
| rc == 0 ? "EOF" : |
| rc > 0 ? "OK" : |
| strerror(-rc)); |
| else if (!pending_msg && rc == -EAGAIN) |
| printf( "got msg %s NULL, " |
| "returned: %s\n", |
| msg ? "!=" : "==", |
| rc == 0 ? "EOF" : |
| rc > 0 ? "OK" : |
| strerror(-rc)); |
| if (rc == 0) |
| return 0; |
| if (rc == -EAGAIN) |
| break; |
| if (rc < 0) { |
| printf("ipa_msg_recv_buffered failed with: %s\n", |
| strerror(-rc)); |
| return rc; |
| } |
| printf("got IPA message, size=%d, proto=%d, text=\"%s\"\n", |
| rc, msg->data[2], msg->l2h); |
| msgb_free(msg); |
| }; |
| |
| return rc; |
| } |
| |
| static int slurp_data(int fd) { |
| int rc; |
| char buf[256]; |
| int count = 0; |
| |
| do { |
| rc = recv(fd, buf, sizeof(buf), 0); |
| if (rc <= 0) |
| break; |
| |
| count += rc; |
| } while (1); |
| |
| return count; |
| }; |
| |
| static void test_complete_recv(int do_not_assemble) |
| { |
| int sv[2]; |
| struct msgb *msg_out = msgb_alloc(4096, "msg_out"); |
| struct msgb *pending_msg = NULL; |
| int rc, i; |
| |
| printf("Testing IPA recv with complete messages%s.\n", |
| do_not_assemble ? "" : " with assembling enabled"); |
| |
| if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == -1) |
| err(1, "socketpair"); |
| |
| fcntl(sv[0], F_SETFL, O_NONBLOCK); |
| |
| for (i=0; i < ARRAY_SIZE(ipa_test_messages); i++) |
| append_ipa_message(msg_out, 200, ipa_test_messages[i]); |
| |
| while (msg_out->len > 0) { |
| rc = write(sv[1], msg_out->data, msg_out->len); |
| if (rc == -1) |
| err(1, "write"); |
| msgb_pull(msg_out, rc); |
| } |
| |
| for (i=0; i < ARRAY_SIZE(ipa_test_messages); i++) { |
| rc = receive_messages(sv[0], |
| do_not_assemble ? NULL : &pending_msg); |
| if (pending_msg) |
| printf("Unexpected partial message: size=%d\n", |
| pending_msg->len); |
| if (rc == 0) |
| break; |
| |
| if (rc < 0 && rc != -EAGAIN) |
| break; |
| } |
| |
| rc = slurp_data(sv[0]); |
| printf("done: unread %d, unsent %d\n", rc, msg_out->len); |
| |
| close(sv[1]); |
| close(sv[0]); |
| |
| msgb_free(msg_out); |
| msgb_free(pending_msg); |
| } |
| |
| |
| static void test_partial_recv(int do_not_assemble) |
| { |
| int sv[2]; |
| struct msgb *msg_out = msgb_alloc(4096, "msg_out"); |
| struct msgb *pending_msg = NULL; |
| int rc, i; |
| |
| printf("Testing IPA recv with partitioned messages%s.\n", |
| do_not_assemble ? "" : " with assembling enabled"); |
| |
| if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == -1) |
| err(1, "socketpair"); |
| |
| fcntl(sv[0], F_SETFL, O_NONBLOCK); |
| |
| for (i=0; i < ARRAY_SIZE(ipa_test_messages); i++) |
| append_ipa_message(msg_out, 200, ipa_test_messages[i]); |
| |
| while (msg_out->len > 0) { |
| int len = 5; |
| if (len > msg_out->len) |
| len = msg_out->len; |
| if (write(sv[1], msg_out->data, len) == -1) |
| err(1, "write"); |
| msgb_pull(msg_out, len); |
| |
| if (msg_out->len == 0) |
| shutdown(sv[1], SHUT_WR); |
| |
| rc = receive_messages(sv[0], |
| do_not_assemble ? NULL : &pending_msg); |
| |
| if (rc == 0) |
| break; |
| |
| if (rc < 0 && rc != -EAGAIN) |
| break; |
| } |
| rc = slurp_data(sv[0]); |
| printf("done: unread %d, unsent %d\n", rc, msg_out->len); |
| |
| close(sv[1]); |
| close(sv[0]); |
| |
| msgb_free(msg_out); |
| msgb_free(pending_msg); |
| } |
| |
| static struct log_info info = {}; |
| |
| int main(int argc, char **argv) |
| { |
| osmo_init_logging(&info); |
| log_set_all_filter(osmo_stderr_target, 1); |
| log_set_log_level(osmo_stderr_target, LOGL_INFO); |
| |
| printf("Testing the IPA layer.\n"); |
| |
| /* run the tests */ |
| test_complete_recv(1); |
| test_partial_recv(1); |
| test_complete_recv(0); |
| test_partial_recv(0); |
| |
| printf("No crashes.\n"); |
| return 0; |
| } |