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tg/loop.c

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/*
This file is part of telegram-client.
Telegram-client is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
Telegram-client 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this telegram-client. If not, see <http://www.gnu.org/licenses/>.
Copyright Vitaly Valtman 2013
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define READLINE_CALLBACKS
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef READLINE_GNU
#include <readline/readline.h>
#include <readline/history.h>
#else
#include <readline/readline.h>
#include <readline/history.h>
#endif
#include <errno.h>
#include <poll.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "interface.h"
#include "net.h"
#include "mtproto-client.h"
#include "mtproto-common.h"
#include "queries.h"
#include "telegram.h"
#include "loop.h"
#include "binlog.h"
#include "lua-tg.h"
extern char *default_username;
extern char *auth_token;
extern int test_dc;
void set_default_username (const char *s);
int default_dc_num;
extern int binlog_enabled;
extern int unknown_user_list_pos;
extern int unknown_user_list[];
int register_mode;
extern int safe_quit;
extern int queries_num;
int unread_messages;
void got_it (char *line, int len);
void net_loop (int flags, int (*is_end)(void)) {
while (!is_end ()) {
struct pollfd fds[101];
int cc = 0;
if (flags & 3) {
fds[0].fd = 0;
fds[0].events = POLLIN;
cc ++;
}
write_state_file ();
int x = connections_make_poll_array (fds + cc, 101 - cc) + cc;
double timer = next_timer_in ();
if (timer > 1000) { timer = 1000; }
if (poll (fds, x, timer) < 0) {
work_timers ();
continue;
}
work_timers ();
if ((flags & 3) && (fds[0].revents & POLLIN)) {
unread_messages = 0;
if (flags & 1) {
rl_callback_read_char ();
} else {
char *line = 0;
size_t len = 0;
assert (getline (&line, &len, stdin) >= 0);
got_it (line, strlen (line));
}
}
connections_poll_result (fds + cc, x - cc);
#ifdef USE_LUA
lua_do_all ();
#endif
if (safe_quit && !queries_num) {
printf ("All done. Exit\n");
rl_callback_handler_remove ();
exit (0);
}
if (unknown_user_list_pos) {
do_get_user_list_info_silent (unknown_user_list_pos, unknown_user_list);
unknown_user_list_pos = 0;
}
}
}
char **_s;
size_t *_l;
int got_it_ok;
void got_it (char *line, int len) {
assert (len > 0);
line[-- len] = 0; // delete end of line
*_s = line;
*_l = len;
got_it_ok = 1;
}
int is_got_it (void) {
return got_it_ok;
}
int net_getline (char **s, size_t *l) {
fflush (stdout);
// rl_already_prompted = 1;
got_it_ok = 0;
_s = s;
_l = l;
// rl_callback_handler_install (0, got_it);
net_loop (2, is_got_it);
return 0;
}
int ret1 (void) { return 0; }
int main_loop (void) {
net_loop (1, ret1);
return 0;
}
struct dc *DC_list[MAX_DC_ID + 1];
struct dc *DC_working;
int dc_working_num;
int auth_state;
char *get_auth_key_filename (void);
char *get_state_filename (void);
char *get_secret_chat_filename (void);
int zero[512];
void write_dc (int auth_file_fd, struct dc *DC) {
assert (write (auth_file_fd, &DC->port, 4) == 4);
int l = strlen (DC->ip);
assert (write (auth_file_fd, &l, 4) == 4);
assert (write (auth_file_fd, DC->ip, l) == l);
if (DC->flags & 1) {
assert (write (auth_file_fd, &DC->auth_key_id, 8) == 8);
assert (write (auth_file_fd, DC->auth_key, 256) == 256);
} else {
assert (write (auth_file_fd, zero, 256 + 8) == 256 + 8);
}
assert (write (auth_file_fd, &DC->server_salt, 8) == 8);
assert (write (auth_file_fd, &DC->has_auth, 4) == 4);
}
int our_id;
void write_auth_file (void) {
if (binlog_enabled) { return; }
int auth_file_fd = open (get_auth_key_filename (), O_CREAT | O_RDWR, 0600);
assert (auth_file_fd >= 0);
int x = DC_SERIALIZED_MAGIC_V2;
assert (write (auth_file_fd, &x, 4) == 4);
x = MAX_DC_ID;
assert (write (auth_file_fd, &x, 4) == 4);
assert (write (auth_file_fd, &dc_working_num, 4) == 4);
assert (write (auth_file_fd, &auth_state, 4) == 4);
int i;
for (i = 0; i <= MAX_DC_ID; i++) {
if (DC_list[i]) {
x = 1;
assert (write (auth_file_fd, &x, 4) == 4);
write_dc (auth_file_fd, DC_list[i]);
} else {
x = 0;
assert (write (auth_file_fd, &x, 4) == 4);
}
}
assert (write (auth_file_fd, &our_id, 4) == 4);
close (auth_file_fd);
}
void read_dc (int auth_file_fd, int id, unsigned ver) {
int port = 0;
assert (read (auth_file_fd, &port, 4) == 4);
int l = 0;
assert (read (auth_file_fd, &l, 4) == 4);
assert (l >= 0);
char *ip = talloc (l + 1);
assert (read (auth_file_fd, ip, l) == l);
ip[l] = 0;
struct dc *DC = alloc_dc (id, ip, port);
assert (read (auth_file_fd, &DC->auth_key_id, 8) == 8);
assert (read (auth_file_fd, &DC->auth_key, 256) == 256);
assert (read (auth_file_fd, &DC->server_salt, 8) == 8);
if (DC->auth_key_id) {
DC->flags |= 1;
}
if (ver != DC_SERIALIZED_MAGIC) {
assert (read (auth_file_fd, &DC->has_auth, 4) == 4);
} else {
DC->has_auth = 0;
}
}
void empty_auth_file (void) {
alloc_dc (1, tstrdup (test_dc ? TG_SERVER_TEST : TG_SERVER), 443);
dc_working_num = 1;
auth_state = 0;
write_auth_file ();
}
int need_dc_list_update;
void read_auth_file (void) {
if (binlog_enabled) { return; }
int auth_file_fd = open (get_auth_key_filename (), O_CREAT | O_RDWR, 0600);
if (auth_file_fd < 0) {
empty_auth_file ();
}
assert (auth_file_fd >= 0);
unsigned x;
unsigned m;
if (read (auth_file_fd, &m, 4) < 4 || (m != DC_SERIALIZED_MAGIC && m != DC_SERIALIZED_MAGIC_V2)) {
close (auth_file_fd);
empty_auth_file ();
return;
}
assert (read (auth_file_fd, &x, 4) == 4);
assert (x <= MAX_DC_ID);
assert (read (auth_file_fd, &dc_working_num, 4) == 4);
assert (read (auth_file_fd, &auth_state, 4) == 4);
if (m == DC_SERIALIZED_MAGIC) {
auth_state = 700;
}
int i;
for (i = 0; i <= (int)x; i++) {
int y;
assert (read (auth_file_fd, &y, 4) == 4);
if (y) {
read_dc (auth_file_fd, i, m);
}
}
int l = read (auth_file_fd, &our_id, 4);
if (l < 4) {
assert (!l);
}
close (auth_file_fd);
DC_working = DC_list[dc_working_num];
if (m == DC_SERIALIZED_MAGIC) {
DC_working->has_auth = 1;
}
}
int pts, qts, seq, last_date;
void read_state_file (void) {
if (binlog_enabled) { return; }
int state_file_fd = open (get_state_filename (), O_CREAT | O_RDWR, 0600);
if (state_file_fd < 0) {
return;
}
int version, magic;
if (read (state_file_fd, &magic, 4) < 4) { close (state_file_fd); return; }
if (magic != (int)STATE_FILE_MAGIC) { close (state_file_fd); return; }
if (read (state_file_fd, &version, 4) < 4) { close (state_file_fd); return; }
assert (version >= 0);
int x[4];
if (read (state_file_fd, x, 16) < 16) {
close (state_file_fd);
return;
}
pts = x[0];
qts = x[1];
seq = x[2];
last_date = x[3];
close (state_file_fd);
}
void write_state_file (void) {
if (binlog_enabled) { return; }
static int wseq;
static int wpts;
static int wqts;
static int wdate;
if (wseq >= seq && wpts >= pts && wqts >= qts && wdate >= last_date) { return; }
int state_file_fd = open (get_state_filename (), O_CREAT | O_RDWR, 0600);
if (state_file_fd < 0) {
return;
}
int x[6];
x[0] = STATE_FILE_MAGIC;
x[1] = 0;
x[2] = pts;
x[3] = qts;
x[4] = seq;
x[5] = last_date;
assert (write (state_file_fd, x, 24) == 24);
close (state_file_fd);
wseq = seq; wpts = pts; wqts = qts; wdate = last_date;
}
extern peer_t *Peers[];
extern int peer_num;
extern int encr_root;
extern unsigned char *encr_prime;
extern int encr_param_version;
void read_secret_chat_file (void) {
if (binlog_enabled) { return; }
int fd = open (get_secret_chat_filename (), O_CREAT | O_RDWR, 0600);
if (fd < 0) {
return;
}
int x[2];
if (read (fd, x, 8) < 8) {
close (fd); return;
}
if (x[0] != (int)SECRET_CHAT_FILE_MAGIC) { close (fd); return; }
int version = x[1];
assert (version >= 0);
int cc;
assert (read (fd, &cc, 4) == 4);
int i;
for (i = 0; i < cc; i++) {
peer_t *P = talloc0 (sizeof (*P));
struct secret_chat *E = &P->encr_chat;
int t;
assert (read (fd, &t, 4) == 4);
P->id = MK_ENCR_CHAT (t);
assert (read (fd, &P->flags, 4) == 4);
assert (read (fd, &t, 4) == 4);
assert (t > 0);
P->print_name = talloc (t + 1);
assert (read (fd, P->print_name, t) == t);
P->print_name[t] = 0;
assert (read (fd, &E->state, 4) == 4);
assert (read (fd, &E->user_id, 4) == 4);
assert (read (fd, &E->admin_id, 4) == 4);
assert (read (fd, &E->ttl, 4) == 4);
assert (read (fd, &E->access_hash, 8) == 8);
if (E->state != sc_waiting) {
E->g_key = talloc (256);
assert (read (fd, E->g_key, 256) == 256);
E->nonce = talloc (256);
assert (read (fd, E->nonce, 256) == 256);
}
assert (read (fd, E->key, 256) == 256);
assert (read (fd, &E->key_fingerprint, 8) == 8);
insert_encrypted_chat (P);
}
if (version >= 1) {
assert (read (fd, &encr_root, 4) == 4);
if (encr_root) {
assert (read (fd, &encr_param_version, 4) == 4);
encr_prime = talloc (256);
assert (read (fd, encr_prime, 256) == 256);
}
}
close (fd);
}
void write_secret_chat_file (void) {
if (binlog_enabled) { return; }
int fd = open (get_secret_chat_filename (), O_CREAT | O_RDWR, 0600);
if (fd < 0) {
return;
}
int x[2];
x[0] = SECRET_CHAT_FILE_MAGIC;
x[1] = 1;
assert (write (fd, x, 8) == 8);
int i;
int cc = 0;
for (i = 0; i < peer_num; i++) if (get_peer_type (Peers[i]->id) == PEER_ENCR_CHAT) {
if (Peers[i]->encr_chat.state != sc_none && Peers[i]->encr_chat.state != sc_deleted) {
cc ++;
}
}
assert (write (fd, &cc, 4) == 4);
for (i = 0; i < peer_num; i++) if (get_peer_type (Peers[i]->id) == PEER_ENCR_CHAT) {
if (Peers[i]->encr_chat.state != sc_none && Peers[i]->encr_chat.state != sc_deleted) {
int t = get_peer_id (Peers[i]->id);
assert (write (fd, &t, 4) == 4);
t = Peers[i]->flags;
assert (write (fd, &t, 4) == 4);
t = strlen (Peers[i]->print_name);
assert (write (fd, &t, 4) == 4);
assert (write (fd, Peers[i]->print_name, t) == t);
assert (write (fd, &Peers[i]->encr_chat.state, 4) == 4);
assert (write (fd, &Peers[i]->encr_chat.user_id, 4) == 4);
assert (write (fd, &Peers[i]->encr_chat.admin_id, 4) == 4);
assert (write (fd, &Peers[i]->encr_chat.ttl, 4) == 4);
assert (write (fd, &Peers[i]->encr_chat.access_hash, 8) == 8);
if (Peers[i]->encr_chat.state != sc_waiting) {
assert (write (fd, Peers[i]->encr_chat.g_key, 256) == 256);
}
if (Peers[i]->encr_chat.state != sc_waiting) {
assert (write (fd, Peers[i]->encr_chat.nonce, 256) == 256);
}
assert (write (fd, Peers[i]->encr_chat.key, 256) == 256);
assert (write (fd, &Peers[i]->encr_chat.key_fingerprint, 8) == 8);
}
}
assert (write (fd, &encr_root, 4) == 4);
if (encr_root) {
assert (write (fd, &encr_param_version, 4) == 4);
assert (write (fd, encr_prime, 256) == 256);
}
close (fd);
}
extern int max_chat_size;
int mcs (void) {
return max_chat_size;
}
extern int difference_got;
int dgot (void) {
return !difference_got;
}
int readline_active;
int new_dc_num;
int loop (void) {
on_start ();
if (binlog_enabled) {
double t = get_double_time ();
logprintf ("replay log start\n");
replay_log ();
logprintf ("replay log end in %lf seconds\n", get_double_time () - t);
write_binlog ();
#ifdef USE_LUA
lua_binlog_end ();
#endif
} else {
read_auth_file ();
}
update_prompt ();
assert (DC_list[dc_working_num]);
if (!DC_working || !DC_working->auth_key_id) {
// if (auth_state == 0) {
DC_working = DC_list[dc_working_num];
assert (!DC_working->auth_key_id);
dc_authorize (DC_working);
assert (DC_working->auth_key_id);
auth_state = 100;
write_auth_file ();
}
if (verbosity) {
logprintf ("Requesting info about DC...\n");
}
do_help_get_config ();
net_loop (0, mcs);
if (verbosity) {
logprintf ("DC_info: %d new DC got\n", new_dc_num);
}
int i;
for (i = 0; i <= MAX_DC_NUM; i++) if (DC_list[i] && !DC_list[i]->auth_key_id) {
dc_authorize (DC_list[i]);
assert (DC_list[i]->auth_key_id);
write_auth_file ();
}
if (auth_state == 100 || !(DC_working->has_auth)) {
if (!default_username) {
size_t size = 0;
char *user = 0;
if (!user) {
printf ("Telephone number (with '+' sign): ");
if (net_getline (&user, &size) == -1) {
perror ("getline()");
exit (EXIT_FAILURE);
}
set_default_username (user);
}
}
int res = do_auth_check_phone (default_username);
assert (res >= 0);
logprintf ("%s\n", res > 0 ? "phone registered" : "phone not registered");
if (res > 0 && !register_mode) {
do_send_code (default_username);
char *code = 0;
size_t size = 0;
printf ("Code from sms: ");
while (1) {
if (net_getline (&code, &size) == -1) {
perror ("getline()");
exit (EXIT_FAILURE);
}
if (do_send_code_result (code) >= 0) {
break;
}
printf ("Invalid code. Try again: ");
tfree_str (code);
}
auth_state = 300;
} else {
printf ("User is not registered. Do you want to register? [Y/n] ");
char *code;
size_t size;
if (net_getline (&code, &size) == -1) {
perror ("getline()");
exit (EXIT_FAILURE);
}
if (!*code || *code == 'y' || *code == 'Y') {
printf ("Ok, starting registartion.\n");
} else {
printf ("Then try again\n");
exit (EXIT_SUCCESS);
}
char *first_name;
printf ("Name: ");
if (net_getline (&first_name, &size) == -1) {
perror ("getline()");
exit (EXIT_FAILURE);
}
char *last_name;
printf ("Name: ");
if (net_getline (&last_name, &size) == -1) {
perror ("getline()");
exit (EXIT_FAILURE);
}
int dc_num = do_get_nearest_dc ();
assert (dc_num >= 0 && dc_num <= MAX_DC_NUM && DC_list[dc_num]);
dc_working_num = dc_num;
DC_working = DC_list[dc_working_num];
do_send_code (default_username);
printf ("Code from sms: ");
while (1) {
if (net_getline (&code, &size) == -1) {
perror ("getline()");
exit (EXIT_FAILURE);
}
if (do_send_code_result_auth (code, first_name, last_name) >= 0) {
break;
}
printf ("Invalid code. Try again: ");
tfree_str (code);
}
auth_state = 300;
}
}
for (i = 0; i <= MAX_DC_NUM; i++) if (DC_list[i] && !DC_list[i]->has_auth) {
do_export_auth (i);
do_import_auth (i);
bl_do_dc_signed (i);
write_auth_file ();
}
write_auth_file ();
fflush (stdout);
fflush (stderr);
read_state_file ();
read_secret_chat_file ();
set_interface_callbacks ();
do_get_difference ();
net_loop (0, dgot);
#ifdef USE_LUA
lua_diff_end ();
#endif
send_all_unsent ();
do_get_dialog_list ();
return main_loop ();
}
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