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#include "control_tcp.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <pcre2.h>
#include <glib.h>
#include <stdarg.h>
#include <errno.h>
#include "poller.h"
#include "helpers.h"
#include "streambuf.h"
#include "log.h"
#include "call.h"
#include "call_interfaces.h"
#include "socket.h"
#include "log_funcs.h"
#include "tcp_listener.h"
struct control_tcp {
struct obj obj;
struct streambuf_listener listener;
pcre2_code *parse_re;
};
//static void control_stream_closed(int fd, void *p, uintptr_t u) {
static void control_stream_closed(struct streambuf_stream *s) {
ilogs(control, LOG_INFO, "Control connection from %s closed", s->addr);
}
static void control_list(struct control_tcp *c, struct streambuf_stream *s) {
if (!c->listener.listener.family)
return;
mutex_lock(&c->listener.lock);
tcp_streams_ht_iter iter;
t_hash_table_iter_init(&iter, c->listener.streams);
struct streambuf_stream *cl;
while (t_hash_table_iter_next(&iter, NULL, &cl))
streambuf_printf(s->outbuf, "%s\n", cl->addr);
mutex_unlock(&c->listener.lock);
streambuf_printf(s->outbuf, "End.\n");
}
static int control_stream_parse(struct streambuf_stream *s, char *line) {
int ret;
char **out;
struct control_tcp *c = (void *) s->parent;
str output = STR_NULL;
pcre2_match_data *md = pcre2_match_data_create(20, NULL);
ret = pcre2_match(c->parse_re, (PCRE2_SPTR8) line, PCRE2_ZERO_TERMINATED,
0, 0, md, NULL);
if (ret <= 0) {
ilogs(control, LOG_WARNING, "Unable to parse command line from %s: %s", s->addr, line);
pcre2_match_data_free(md);
return -1;
}
ilogs(control, LOG_INFO, "Got valid command from %s: %s", s->addr, line);
pcre2_substring_list_get(md, (PCRE2_UCHAR ***) &out, NULL);
if (out[RE_TCP_RL_CALLID])
log_info_c_string(out[RE_TCP_RL_CALLID]);
else if (out[RE_TCP_D_CALLID])
log_info_c_string(out[RE_TCP_D_CALLID]);
if (!strcmp(out[RE_TCP_RL_CMD], "request"))
output = call_request_tcp(out);
else if (!strcmp(out[RE_TCP_RL_CMD], "lookup"))
output = call_lookup_tcp(out);
else if (!strcmp(out[RE_TCP_D_CMD], "delete"))
call_delete_tcp(out);
else if (!strcmp(out[RE_TCP_DIV_CMD], "status"))
calls_status_tcp(s);
else if (!strcmp(out[RE_TCP_DIV_CMD], "build") || !strcmp(out[RE_TCP_DIV_CMD], "version"))
streambuf_printf(s->outbuf, "Version: %s\n", RTPENGINE_VERSION);
else if (!strcmp(out[RE_TCP_DIV_CMD], "controls"))
control_list(c, s);
else if (!strcmp(out[RE_TCP_DIV_CMD], "quit") || !strcmp(out[RE_TCP_DIV_CMD], "exit"))
{}
if (output.len) {
streambuf_write_str(s->outbuf, &output);
free(output.s);
}
pcre2_substring_list_free((SUBSTRING_FREE_ARG) out);
pcre2_match_data_free(md);
log_info_pop();
return 1;
}
//static void control_stream_readable(int fd, void *p, uintptr_t u) {
static void control_stream_readable(struct streambuf_stream *s) {
char *line;
int ret;
while ((line = streambuf_getline(s->inbuf))) {
ilogs(control, LOG_DEBUG, "Got control line from %s: %s", s->addr, line);
ret = control_stream_parse(s, line);
free(line);
if (ret == 1) {
streambuf_stream_shutdown(s);
break;
}
if (ret)
goto close;
}
if (streambuf_bufsize(s->inbuf) > 1024) {
ilogs(control, LOG_WARNING, "Buffer length exceeded in control connection from %s", s->addr);
goto close;
}
return;
close:
streambuf_stream_close(s);
}
static void control_incoming(struct streambuf_stream *s) {
ilogs(control, LOG_INFO, "New TCP control connection from %s", s->addr);
}
static void control_tcp_free(struct control_tcp *c) {
streambuf_listener_shutdown(&c->listener);
pcre2_code_free(c->parse_re);
}
struct control_tcp *control_tcp_new(const endpoint_t *ep) {
struct control_tcp *c;
c = obj_alloc0(struct control_tcp, control_tcp_free);
if (streambuf_listener_init(&c->listener, ep,
control_incoming, control_stream_readable,
control_stream_closed,
&c->obj))
{
ilogs(control, LOG_ERR, "Failed to open TCP control port: %s", strerror(errno));
goto fail;
}
int errcode;
PCRE2_SIZE erroff;
c->parse_re = pcre2_compile(
/* reqtype callid streams ip fromdom fromtype todom totype agent info |reqtype callid info | reqtype */
(PCRE2_SPTR8) "^(?:(request|lookup)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+(\\S+)\\s+info=(\\S*)|(delete)\\s+(\\S+)\\s+info=(\\S*)|(build|version|controls|quit|exit|status))$",
PCRE2_ZERO_TERMINATED,
PCRE2_DOLLAR_ENDONLY | PCRE2_DOTALL, &errcode, &erroff, NULL);
obj_put(c);
return c;
fail:
// XXX streambuf_listener_close ...
obj_put(c);
return NULL;
}
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