static int luv_udp_getsockname(lua_State* L) {
uv_udp_t* handle = luv_check_udp(L, 1);
struct sockaddr_storage address;
int addrlen = sizeof(address);
int ret = uv_udp_getsockname(handle, (struct sockaddr*)&address, &addrlen);
if (ret < 0) return luv_error(L, ret);
parse_sockaddr(L, &address, addrlen);
return 1;
}
static void luv_udp_recv_cb(uv_udp_t* handle, ssize_t nread, const uv_buf_t* buf, const struct sockaddr* addr, unsigned flags) {
lua_State* L = luv_state(handle->loop);
// err
if (nread < 0) {
luv_status(L, nread);
}
else {
lua_pushnil(L);
}
// data
if (nread == 0) {
if (addr) {
lua_pushstring(L, "");
}
else {
lua_pushnil(L);
}
}
else if (nread > 0) {
lua_pushlstring(L, buf->base, nread);
}
else {
lua_pushnil(L);
}
if (buf) free(buf->base);
// address
if (addr) {
parse_sockaddr(L, (struct sockaddr_storage*)addr);
}
else {
lua_pushnil(L);
}
// flags
lua_newtable(L);
if (flags & UV_UDP_PARTIAL) {
lua_pushboolean(L, 1);
lua_setfield(L, -2, "partial");
}
luv_call_callback(L, (luv_handle_t*)handle->data, LUV_RECV, 4);
}
int main(int argc, char **argv, char **envp) {
size_t buf_len = 4096;
char *buf = malloc(buf_len);
char *packed_saddr;
unsigned char *s_inet;
struct ip_port *ipp;
memset(buf, 0, buf_len);
while ((fgets(buf, buf_len, stdin)) != NULL) {
if (!(packed_saddr = sockaddr_from_audit_log(buf)))
continue;
s_inet = bytes_from_packed_string(packed_saddr);
if (!(ipp = parse_sockaddr(s_inet)))
continue;
printf("%s:%d\n", ipp->ip, ipp->port);
free(ipp);
memset(buf, 0, buf_len);
}
return 0;
}
/*
* This code expects the path to be syslog:<priority>
*/
int
logfile_mod_udp_open(Logfile * lf, const char *path, size_t bufsz, int fatal_flag)
{
l_udp_t *ll;
struct sockaddr_in addr;
char *strAddr;
lf->f_close = logfile_mod_udp_close;
lf->f_linewrite = logfile_mod_udp_writeline;
lf->f_linestart = logfile_mod_udp_linestart;
lf->f_lineend = logfile_mod_udp_lineend;
lf->f_flush = logfile_mod_udp_flush;
lf->f_rotate = logfile_mod_udp_rotate;
ll = xcalloc(1, sizeof(*ll));
lf->data = ll;
if (strncmp(path, "//", 2) == 0) {
path += 2;
}
strAddr = xstrdup(path);
if (!parse_sockaddr(strAddr, &addr)) {
if (lf->flags.fatal) {
fatalf("Invalid UDP logging address '%s'\n", lf->path);
} else {
debug(50, 1) ("Invalid UDP logging address '%s'\n", lf->path);
safe_free(strAddr);
return FALSE;
}
}
safe_free(strAddr);
ll->fd = comm_open(SOCK_DGRAM,
IPPROTO_UDP,
no_addr,
0,
COMM_NONBLOCKING,
"UDP log socket");
if (ll->fd < 0) {
if (lf->flags.fatal) {
fatalf("Unable to open UDP socket for logging\n");
} else {
debug(50, 1) ("Unable to open UDP socket for logging\n");
return FALSE;
}
}
if (comm_connect_addr(ll->fd, &addr)) {
if (lf->flags.fatal) {
fatalf("Unable to connect to %s for UDP log: %s\n", lf->path, xstrerror());
} else {
debug(50, 1) ("Unable to connect to %s for UDP log: %s\n", lf->path, xstrerror());
return FALSE;
}
}
if (ll->fd == -1) {
if (ENOENT == errno && fatal_flag) {
fatalf("Cannot open '%s' because\n"
"\tthe parent directory does not exist.\n"
"\tPlease create the directory.\n", path);
} else if (EACCES == errno && fatal_flag) {
fatalf("Cannot open '%s' for writing.\n"
"\tThe parent directory must be writeable by the\n"
"\tuser '%s', which is the cache_effective_user\n"
"\tset in squid.conf.", path, Config.effectiveUser);
} else {
debug(50, 1) ("logfileOpen (stdio): %s: %s\n", path, xstrerror());
return 0;
}
}
/* Force buffer size to something roughly fitting inside an MTU */
/*
* XXX note the receive side needs to receive the whole packet at once;
* applications like netcat have a small default receive buffer and will
* truncate!
*/
bufsz = 1400;
if (bufsz > 0) {
ll->buf = (char *) xmalloc(bufsz);
ll->bufsz = bufsz;
}
return 1;
}