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#include <dnswire/writer.h>
#include <dnswire/reader.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/types.h>
#include <signal.h>
#include <sys/wait.h>
#include "create_dnstap.c"
int main(int argc, const char* argv[])
{
if (argc < 2) {
return 1;
}
struct sockaddr_un path;
memset(&path, 0, sizeof(struct sockaddr_un));
path.sun_family = AF_UNIX;
strncpy(path.sun_path, argv[1], sizeof(path.sun_path) - 1);
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd == -1) {
return 1;
}
int ret = 1, attempts = 5;
while (attempts--) {
if (!(ret = connect(fd, (struct sockaddr*)&path, sizeof(struct sockaddr_un)))) {
break;
} else {
fprintf(stderr, "sleep\n");
sleep(1);
}
}
if (ret) {
close(fd);
return ret;
}
struct dnswire_writer writer;
if (dnswire_writer_init(&writer) != dnswire_ok) {
return 1;
}
if (dnswire_writer_set_bidirectional(&writer, true) != dnswire_ok) {
return 1;
}
// force small buffers to trigger buf resizing
writer.read_size = 4;
writer.read_inc = 4;
if (dnswire_writer_set_bufsize(&writer, 4) != dnswire_ok) {
return 1;
}
if (dnswire_writer_set_bufinc(&writer, 4) != dnswire_ok) {
return 1;
}
struct dnstap d = DNSTAP_INITIALIZER;
create_dnstap(&d, "writer_reader_unixsock-1");
dnswire_writer_set_dnstap(writer, &d);
while (1) {
enum dnswire_result res = dnswire_writer_write(&writer, fd);
switch (res) {
case dnswire_ok:
break;
case dnswire_again:
case dnswire_need_more:
continue;
default:
fprintf(stderr, "dnswire_writer_write() error\n");
return 1;
}
break;
}
create_dnstap(&d, "writer_reader_unixsock-2");
while (1) {
enum dnswire_result res = dnswire_writer_write(&writer, fd);
switch (res) {
case dnswire_ok:
break;
case dnswire_again:
case dnswire_need_more:
continue;
default:
fprintf(stderr, "dnswire_writer_write() error\n");
return 1;
}
break;
}
if (dnswire_writer_stop(&writer) != dnswire_ok) {
fprintf(stderr, "dnswire_writer_stop() failed\n");
return 1;
}
while (1) {
enum dnswire_result res = dnswire_writer_write(&writer, fd);
switch (res) {
case dnswire_ok:
case dnswire_endofdata:
break;
case dnswire_again:
case dnswire_need_more:
continue;
default:
fprintf(stderr, "dnswire_writer_write() error\n");
return 1;
}
break;
}
dnswire_writer_destroy(writer);
shutdown(fd, SHUT_RDWR);
close(fd);
return ret;
}
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