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#include "replace.h"
#include "unix_msg.h"
#include "poll_funcs/poll_funcs_tevent.h"
#include "tevent.h"
struct cb_state {
unsigned num_received;
uint8_t *buf;
size_t buflen;
};
static void recv_cb(struct unix_msg_ctx *ctx,
uint8_t *msg, size_t msg_len,
int *fds, size_t num_fds,
void *private_data);
static void expect_messages(struct tevent_context *ev, struct cb_state *state,
unsigned num_msgs)
{
state->num_received = 0;
while (state->num_received < num_msgs) {
int ret;
ret = tevent_loop_once(ev);
if (ret == -1) {
fprintf(stderr, "tevent_loop_once failed: %s\n",
strerror(errno));
exit(1);
}
}
}
int main(void)
{
struct poll_funcs *funcs;
void *tevent_handle;
struct sockaddr_un addr1, addr2;
struct unix_msg_ctx *ctx1, *ctx2;
struct tevent_context *ev;
struct iovec iov;
uint8_t msg;
int i, ret;
static uint8_t buf[1755];
struct cb_state state;
addr1 = (struct sockaddr_un) { .sun_family = AF_UNIX };
strlcpy(addr1.sun_path, "sock1", sizeof(addr1.sun_path));
unlink(addr1.sun_path);
addr2 = (struct sockaddr_un) { .sun_family = AF_UNIX };
strlcpy(addr2.sun_path, "sock2", sizeof(addr2.sun_path));
unlink(addr2.sun_path);
ev = tevent_context_init(NULL);
if (ev == NULL) {
perror("tevent_context_init failed");
return 1;
}
funcs = poll_funcs_init_tevent(ev);
if (funcs == NULL) {
fprintf(stderr, "poll_funcs_init_tevent failed\n");
return 1;
}
tevent_handle = poll_funcs_tevent_register(ev, funcs, ev);
if (tevent_handle == NULL) {
fprintf(stderr, "poll_funcs_register_tevent failed\n");
return 1;
}
ret = unix_msg_init(&addr1, funcs, 256, recv_cb, &state, &ctx1);
if (ret != 0) {
fprintf(stderr, "unix_msg_init failed: %s\n",
strerror(ret));
return 1;
}
ret = unix_msg_init(&addr1, funcs, 256, recv_cb, &state, &ctx1);
if (ret == 0) {
fprintf(stderr, "unix_msg_init succeeded unexpectedly\n");
return 1;
}
if (ret != EADDRINUSE) {
fprintf(stderr, "unix_msg_init returned %s, expected "
"EADDRINUSE\n", strerror(ret));
return 1;
}
ret = unix_msg_init(&addr2, funcs, 256, recv_cb, &state, &ctx2);
if (ret != 0) {
fprintf(stderr, "unix_msg_init failed: %s\n",
strerror(ret));
return 1;
}
printf("sending a 0-length message\n");
state.buf = NULL;
state.buflen = 0;
ret = unix_msg_send(ctx1, &addr2, NULL, 0, NULL, 0);
if (ret != 0) {
fprintf(stderr, "unix_msg_send failed: %s\n",
strerror(ret));
return 1;
}
expect_messages(ev, &state, 1);
printf("sending a small message\n");
msg = random();
iov.iov_base = &msg;
iov.iov_len = sizeof(msg);
state.buf = &msg;
state.buflen = sizeof(msg);
ret = unix_msg_send(ctx1, &addr2, &iov, 1, NULL, 0);
if (ret != 0) {
fprintf(stderr, "unix_msg_send failed: %s\n",
strerror(ret));
return 1;
}
expect_messages(ev, &state, 1);
printf("sending six large, interleaved messages\n");
for (i=0; i<sizeof(buf); i++) {
buf[i] = random();
}
iov.iov_base = buf;
iov.iov_len = sizeof(buf);
state.buf = buf;
state.buflen = sizeof(buf);
for (i=0; i<3; i++) {
ret = unix_msg_send(ctx1, &addr2, &iov, 1, NULL, 0);
if (ret != 0) {
fprintf(stderr, "unix_msg_send failed: %s\n",
strerror(ret));
return 1;
}
ret = unix_msg_send(ctx2, &addr2, &iov, 1, NULL, 0);
if (ret != 0) {
fprintf(stderr, "unix_msg_send failed: %s\n",
strerror(ret));
return 1;
}
}
expect_messages(ev, &state, 6);
printf("sending a few messages in small pieces\n");
for (i = 0; i<5; i++) {
struct iovec iovs[20];
const size_t num_iovs = ARRAY_SIZE(iovs);
uint8_t *p = buf;
size_t j;
for (j=0; j<num_iovs-1; j++) {
size_t chunk = (random() % ((sizeof(buf) * 2) / num_iovs));
size_t space = (sizeof(buf) - (p - buf));
if (space == 0) {
break;
}
chunk = MIN(chunk, space);
iovs[j].iov_base = p;
iovs[j].iov_len = chunk;
p += chunk;
}
if (p < (buf + sizeof(buf))) {
iovs[j].iov_base = p;
iovs[j].iov_len = (sizeof(buf) - (p - buf));
j++;
}
ret = unix_msg_send(ctx1, &addr1, iovs, j, NULL, 0);
if (ret != 0) {
fprintf(stderr, "unix_msg_send failed: %s\n",
strerror(ret));
return 1;
}
}
expect_messages(ev, &state, 5);
printf("Filling send queues before freeing\n");
for (i=0; i<5; i++) {
ret = unix_msg_send(ctx1, &addr2, &iov, 1, NULL, 0);
if (ret != 0) {
fprintf(stderr, "unix_msg_send failed: %s\n",
strerror(ret));
return 1;
}
ret = unix_msg_send(ctx1, &addr1, &iov, 1, NULL, 0);
if (ret != 0) {
fprintf(stderr, "unix_msg_send failed: %s\n",
strerror(ret));
return 1;
}
}
expect_messages(ev, &state, 1); /* Read just one msg */
unix_msg_free(ctx1);
unix_msg_free(ctx2);
talloc_free(tevent_handle);
talloc_free(funcs);
talloc_free(ev);
return 0;
}
static void recv_cb(struct unix_msg_ctx *ctx,
uint8_t *msg, size_t msg_len,
int *fds, size_t num_fds,
void *private_data)
{
struct cb_state *state = (struct cb_state *)private_data;
if (msg_len != state->buflen) {
fprintf(stderr, "expected %u bytes, got %u\n",
(unsigned)state->buflen, (unsigned)msg_len);
exit(1);
}
if ((msg_len != 0) && (memcmp(msg, state->buf, msg_len) != 0)) {
fprintf(stderr, "message content differs\n");
exit(1);
}
state->num_received += 1;
}
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