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/* 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 *msg;
char dummy;
int rc;
while (1) {
if (recv(fd, &dummy, 1, MSG_PEEK) < 1) {
rc = -EAGAIN;
break;
}
msg = NULL;
rc = ipa_msg_recv(fd, &msg);
if (rc == -1)
rc = -errno;
fprintf(stderr,
"ipa_msg_recv: %d, msg %s NULL\n",
rc, msg ? "!=" : "==");
if (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 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(void)
{
int sv[2];
struct msgb *msg_out = msgb_alloc(4096, "msg_out");
int rc, i;
printf("Testing IPA recv with complete messages.\n");
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]);
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);
}
static void test_partial_recv(void)
{
int sv[2];
struct msgb *msg_out = msgb_alloc(4096, "msg_out");
int rc, i;
printf("Testing IPA recv with partitioned messages.\n");
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]);
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);
}
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();
test_partial_recv();
printf("No crashes.\n");
return 0;
}
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