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mtproto-client.c
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mtproto-client.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 Nikolay Durov, Andrey Lopatin 2012-2013
Copyright Vitaly Valtman 2013
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef USE_LUA
# include "lua-tg.h"
#endif
#define _FILE_OFFSET_BITS 64
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#if defined(__FreeBSD__) || defined(__OpenBSD__)
#include <sys/endian.h>
#endif
#include <sys/types.h>
#include <netdb.h>
#include <openssl/rand.h>
#include <openssl/rsa.h>
#include <openssl/pem.h>
#include <openssl/sha.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <poll.h>
#include "telegram.h"
#include "net.h"
#include "include.h"
#include "queries.h"
#include "loop.h"
#include "interface.h"
#include "structures.h"
#include "binlog.h"
#if defined(__FreeBSD__)
#define __builtin_bswap32(x) bswap32(x)
#endif
#if defined(__OpenBSD__)
#define __builtin_bswap32(x) __swap32gen(x)
#endif
#define sha1 SHA1
#include "mtproto-common.h"
#define MAX_NET_RES (1L << 16)
extern int log_level;
int verbosity;
int auth_success;
enum dc_state c_state;
char nonce[256];
char new_nonce[256];
char server_nonce[256];
extern int binlog_enabled;
extern int disable_auto_accept;
extern int allow_weak_random;
int total_packets_sent;
long long total_data_sent;
int rpc_execute (struct connection *c, int op, int len);
int rpc_becomes_ready (struct connection *c);
int rpc_close (struct connection *c);
struct connection_methods auth_methods = {
.execute = rpc_execute,
.ready = rpc_becomes_ready,
.close = rpc_close
};
long long precise_time;
double get_utime (int clock_id) {
struct timespec T;
my_clock_gettime (clock_id, &T);
double res = T.tv_sec + (double) T.tv_nsec * 1e-9;
if (clock_id == CLOCK_REALTIME) {
precise_time = (long long) (res * (1LL << 32));
}
return res;
}
void secure_random (void *s, int l) {
if (RAND_bytes (s, l) < 0) {
if (allow_weak_random) {
RAND_pseudo_bytes (s, l);
} else {
assert (0 && "End of random. If you want, you can start with -w");
}
}
}
#define STATS_BUFF_SIZE (64 << 10)
int stats_buff_len;
char stats_buff[STATS_BUFF_SIZE];
#define MAX_RESPONSE_SIZE (1L << 24)
char Response[MAX_RESPONSE_SIZE];
int Response_len;
/*
*
* STATE MACHINE
*
*/
#define TG_SERVER_PUBKEY_FILENAME "tg-server.pub"
char *rsa_public_key_name; // = TG_SERVER_PUBKEY_FILENAME;
RSA *pubKey;
long long pk_fingerprint;
static int rsa_load_public_key (const char *public_key_name) {
pubKey = NULL;
FILE *f = fopen (public_key_name, "r");
if (f == NULL) {
if (verbosity) {
logprintf ( "Couldn't open public key file: %s\n", public_key_name);
}
return -1;
}
pubKey = PEM_read_RSAPublicKey (f, NULL, NULL, NULL);
fclose (f);
if (pubKey == NULL) {
logprintf ( "PEM_read_RSAPublicKey returns NULL.\n");
return -1;
}
if (verbosity) {
logprintf ( "public key '%s' loaded successfully\n", rsa_public_key_name);
}
return 0;
}
int auth_work_start (struct connection *c);
/*
*
* UNAUTHORIZED (DH KEY EXCHANGE) PROTOCOL PART
*
*/
BIGNUM dh_prime, dh_g, g_a, dh_power, auth_key_num;
char s_power [256];
struct {
long long auth_key_id;
long long out_msg_id;
int msg_len;
} unenc_msg_header;
#define ENCRYPT_BUFFER_INTS 16384
int encrypt_buffer[ENCRYPT_BUFFER_INTS];
#define DECRYPT_BUFFER_INTS 16384
int decrypt_buffer[ENCRYPT_BUFFER_INTS];
int encrypt_packet_buffer (void) {
return pad_rsa_encrypt ((char *) packet_buffer, (packet_ptr - packet_buffer) * 4, (char *) encrypt_buffer, ENCRYPT_BUFFER_INTS * 4, pubKey->n, pubKey->e);
}
int encrypt_packet_buffer_aes_unauth (const char server_nonce[16], const char hidden_client_nonce[32]) {
init_aes_unauth (server_nonce, hidden_client_nonce, AES_ENCRYPT);
return pad_aes_encrypt ((char *) packet_buffer, (packet_ptr - packet_buffer) * 4, (char *) encrypt_buffer, ENCRYPT_BUFFER_INTS * 4);
}
int rpc_send_packet (struct connection *c) {
int len = (packet_ptr - packet_buffer) * 4;
c->out_packet_num ++;
long long next_msg_id = (long long) ((1LL << 32) * get_utime (CLOCK_REALTIME)) & -4;
if (next_msg_id <= unenc_msg_header.out_msg_id) {
unenc_msg_header.out_msg_id += 4;
} else {
unenc_msg_header.out_msg_id = next_msg_id;
}
unenc_msg_header.msg_len = len;
int total_len = len + 20;
assert (total_len > 0 && !(total_len & 0xfc000003));
total_len >>= 2;
if (total_len < 0x7f) {
assert (write_out (c, &total_len, 1) == 1);
} else {
total_len = (total_len << 8) | 0x7f;
assert (write_out (c, &total_len, 4) == 4);
}
write_out (c, &unenc_msg_header, 20);
write_out (c, packet_buffer, len);
flush_out (c);
total_packets_sent ++;
total_data_sent += total_len;
return 1;
}
int rpc_send_message (struct connection *c, void *data, int len) {
assert (len > 0 && !(len & 0xfc000003));
int total_len = len >> 2;
if (total_len < 0x7f) {
assert (write_out (c, &total_len, 1) == 1);
} else {
total_len = (total_len << 8) | 0x7f;
assert (write_out (c, &total_len, 4) == 4);
}
c->out_packet_num ++;
assert (write_out (c, data, len) == len);
flush_out (c);
total_packets_sent ++;
total_data_sent += total_len;
return 1;
}
int send_req_pq_packet (struct connection *c) {
assert (c_state == st_init);
secure_random (nonce, 16);
unenc_msg_header.out_msg_id = 0;
clear_packet ();
out_int (CODE_req_pq);
out_ints ((int *)nonce, 4);
rpc_send_packet (c);
c_state = st_reqpq_sent;
return 1;
}
unsigned long long gcd (unsigned long long a, unsigned long long b) {
return b ? gcd (b, a % b) : a;
}
//typedef unsigned int uint128_t __attribute__ ((mode(TI)));
unsigned long long what;
unsigned p1, p2;
int process_respq_answer (struct connection *c, char *packet, int len) {
int i;
if (verbosity) {
logprintf ( "process_respq_answer(), len=%d\n", len);
}
assert (len >= 76);
assert (!*(long long *) packet);
assert (*(int *) (packet + 16) == len - 20);
assert (!(len & 3));
assert (*(int *) (packet + 20) == CODE_resPQ);
assert (!memcmp (packet + 24, nonce, 16));
memcpy (server_nonce, packet + 40, 16);
char *from = packet + 56;
int clen = *from++;
assert (clen <= 8);
what = 0;
for (i = 0; i < clen; i++) {
what = (what << 8) + (unsigned char)*from++;
}
while (((unsigned long)from) & 3) ++from;
p1 = 0, p2 = 0;
if (verbosity >= 2) {
logprintf ( "%lld received\n", what);
}
int it = 0;
unsigned long long g = 0;
for (i = 0; i < 3 || it < 1000; i++) {
int q = ((lrand48() & 15) + 17) % what;
unsigned long long x = (long long)lrand48 () % (what - 1) + 1, y = x;
int lim = 1 << (i + 18);
int j;
for (j = 1; j < lim; j++) {
++it;
unsigned long long a = x, b = x, c = q;
while (b) {
if (b & 1) {
c += a;
if (c >= what) {
c -= what;
}
}
a += a;
if (a >= what) {
a -= what;
}
b >>= 1;
}
x = c;
unsigned long long z = x < y ? what + x - y : x - y;
g = gcd (z, what);
if (g != 1) {
break;
}
if (!(j & (j - 1))) {
y = x;
}
}
if (g > 1 && g < what) break;
}
assert (g > 1 && g < what);
p1 = g;
p2 = what / g;
if (p1 > p2) {
unsigned t = p1; p1 = p2; p2 = t;
}
if (verbosity) {
logprintf ( "p1 = %d, p2 = %d, %d iterations\n", p1, p2, it);
}
/// ++p1; ///
assert (*(int *) (from) == CODE_vector);
int fingerprints_num = *(int *)(from + 4);
assert (fingerprints_num >= 1 && fingerprints_num <= 64 && len == fingerprints_num * 8 + 8 + (from - packet));
long long *fingerprints = (long long *) (from + 8);
for (i = 0; i < fingerprints_num; i++) {
if (fingerprints[i] == pk_fingerprint) {
//logprintf ( "found our public key at position %d\n", i);
break;
}
}
if (i == fingerprints_num) {
logprintf ( "fatal: don't have any matching keys (%016llx expected)\n", pk_fingerprint);
exit (2);
}
// create inner part (P_Q_inner_data)
clear_packet ();
packet_ptr += 5;
out_int (CODE_p_q_inner_data);
out_cstring (packet + 57, clen);
//out_int (0x0f01); // pq=15
if (p1 < 256) {
clen = 1;
} else if (p1 < 65536) {
clen = 2;
} else if (p1 < 16777216) {
clen = 3;
} else {
clen = 4;
}
p1 = __builtin_bswap32 (p1);
out_cstring ((char *)&p1 + 4 - clen, clen);
p1 = __builtin_bswap32 (p1);
if (p2 < 256) {
clen = 1;
} else if (p2 < 65536) {
clen = 2;
} else if (p2 < 16777216) {
clen = 3;
} else {
clen = 4;
}
p2 = __builtin_bswap32 (p2);
out_cstring ((char *)&p2 + 4 - clen, clen);
p2 = __builtin_bswap32 (p2);
//out_int (0x0301); // p=3
//out_int (0x0501); // q=5
out_ints ((int *) nonce, 4);
out_ints ((int *) server_nonce, 4);
secure_random (new_nonce, 32);
out_ints ((int *) new_nonce, 8);
sha1 ((unsigned char *) (packet_buffer + 5), (packet_ptr - packet_buffer - 5) * 4, (unsigned char *) packet_buffer);
int l = encrypt_packet_buffer ();
clear_packet ();
out_int (CODE_req_DH_params);
out_ints ((int *) nonce, 4);
out_ints ((int *) server_nonce, 4);
//out_int (0x0301); // p=3
//out_int (0x0501); // q=5
if (p1 < 256) {
clen = 1;
} else if (p1 < 65536) {
clen = 2;
} else if (p1 < 16777216) {
clen = 3;
} else {
clen = 4;
}
p1 = __builtin_bswap32 (p1);
out_cstring ((char *)&p1 + 4 - clen, clen);
p1 = __builtin_bswap32 (p1);
if (p2 < 256) {
clen = 1;
} else if (p2 < 65536) {
clen = 2;
} else if (p2 < 16777216) {
clen = 3;
} else {
clen = 4;
}
p2 = __builtin_bswap32 (p2);
out_cstring ((char *)&p2 + 4 - clen, clen);
p2 = __builtin_bswap32 (p2);
out_long (pk_fingerprint);
out_cstring ((char *) encrypt_buffer, l);
c_state = st_reqdh_sent;
return rpc_send_packet (c);
}
int check_prime (BIGNUM *p) {
int r = BN_is_prime (p, BN_prime_checks, 0, BN_ctx, 0);
ensure (r >= 0);
return r;
}
int check_DH_params (BIGNUM *p, int g) {
if (g < 2 || g > 7) { return -1; }
BIGNUM t;
BN_init (&t);
BN_init (&dh_g);
ensure (BN_set_word (&dh_g, 4 * g));
ensure (BN_mod (&t, p, &dh_g, BN_ctx));
int x = BN_get_word (&t);
assert (x >= 0 && x < 4 * g);
BN_free (&dh_g);
switch (g) {
case 2:
if (x != 7) { return -1; }
break;
case 3:
if (x % 3 != 2 ) { return -1; }
break;
case 4:
break;
case 5:
if (x % 5 != 1 && x % 5 != 4) { return -1; }
break;
case 6:
if (x != 19 && x != 23) { return -1; }
break;
case 7:
if (x % 7 != 3 && x % 7 != 5 && x % 7 != 6) { return -1; }
break;
}
if (!check_prime (p)) { return -1; }
BIGNUM b;
BN_init (&b);
ensure (BN_set_word (&b, 2));
ensure (BN_div (&t, 0, p, &b, BN_ctx));
if (!check_prime (&t)) { return -1; }
BN_free (&b);
BN_free (&t);
return 0;
}
int check_g (unsigned char p[256], BIGNUM *g) {
static unsigned char s[256];
memset (s, 0, 256);
assert (BN_num_bytes (g) <= 256);
BN_bn2bin (g, s);
int ok = 0;
int i;
for (i = 0; i < 64; i++) {
if (s[i]) {
ok = 1;
break;
}
}
if (!ok) { return -1; }
ok = 0;
for (i = 0; i < 64; i++) {
if (s[255 - i]) {
ok = 1;
break;
}
}
if (!ok) { return -1; }
ok = 0;
for (i = 0; i < 64; i++) {
if (s[i] < p[i]) {
ok = 1;
break;
} else if (s[i] > p[i]) {
logprintf ("i = %d (%d %d)\n", i, (int)s[i], (int)p[i]);
return -1;
}
}
if (!ok) { return -1; }
return 0;
}
int check_g_bn (BIGNUM *p, BIGNUM *g) {
static unsigned char s[256];
memset (s, 0, 256);
assert (BN_num_bytes (p) <= 256);
BN_bn2bin (p, s);
return check_g (s, g);
}
int process_dh_answer (struct connection *c, char *packet, int len) {
if (verbosity) {
logprintf ( "process_dh_answer(), len=%d\n", len);
}
if (len < 116) {
logprintf ( "%u * %u = %llu", p1, p2, what);
}
assert (len >= 116);
assert (!*(long long *) packet);
assert (*(int *) (packet + 16) == len - 20);
assert (!(len & 3));
assert (*(int *) (packet + 20) == (int)CODE_server_DH_params_ok);
assert (!memcmp (packet + 24, nonce, 16));
assert (!memcmp (packet + 40, server_nonce, 16));
init_aes_unauth (server_nonce, new_nonce, AES_DECRYPT);
in_ptr = (int *)(packet + 56);
in_end = (int *)(packet + len);
int l = prefetch_strlen ();
assert (l > 0);
l = pad_aes_decrypt (fetch_str (l), l, (char *) decrypt_buffer, DECRYPT_BUFFER_INTS * 4 - 16);
assert (in_ptr == in_end);
assert (l >= 60);
assert (decrypt_buffer[5] == (int)CODE_server_DH_inner_data);
assert (!memcmp (decrypt_buffer + 6, nonce, 16));
assert (!memcmp (decrypt_buffer + 10, server_nonce, 16));
int g = decrypt_buffer[14];
in_ptr = decrypt_buffer + 15;
in_end = decrypt_buffer + (l >> 2);
BN_init (&dh_prime);
BN_init (&g_a);
assert (fetch_bignum (&dh_prime) > 0);
assert (fetch_bignum (&g_a) > 0);
assert (check_g_bn (&dh_prime, &g_a) >= 0);
int server_time = *in_ptr++;
assert (in_ptr <= in_end);
assert (check_DH_params (&dh_prime, g) >= 0);
static char sha1_buffer[20];
sha1 ((unsigned char *) decrypt_buffer + 20, (in_ptr - decrypt_buffer - 5) * 4, (unsigned char *) sha1_buffer);
assert (!memcmp (decrypt_buffer, sha1_buffer, 20));
assert ((char *) in_end - (char *) in_ptr < 16);
GET_DC(c)->server_time_delta = server_time - time (0);
GET_DC(c)->server_time_udelta = server_time - get_utime (CLOCK_MONOTONIC);
//logprintf ( "server time is %d, delta = %d\n", server_time, server_time_delta);
// Build set_client_DH_params answer
clear_packet ();
packet_ptr += 5;
out_int (CODE_client_DH_inner_data);
out_ints ((int *) nonce, 4);
out_ints ((int *) server_nonce, 4);
out_long (0LL);
BN_init (&dh_g);
ensure (BN_set_word (&dh_g, g));
secure_random (s_power, 256);
BIGNUM *dh_power = BN_bin2bn ((unsigned char *)s_power, 256, 0);
ensure_ptr (dh_power);
BIGNUM *y = BN_new ();
ensure_ptr (y);
ensure (BN_mod_exp (y, &dh_g, dh_power, &dh_prime, BN_ctx));
out_bignum (y);
BN_free (y);
BN_init (&auth_key_num);
ensure (BN_mod_exp (&auth_key_num, &g_a, dh_power, &dh_prime, BN_ctx));
l = BN_num_bytes (&auth_key_num);
assert (l >= 250 && l <= 256);
assert (BN_bn2bin (&auth_key_num, (unsigned char *)GET_DC(c)->auth_key));
memset (GET_DC(c)->auth_key + l, 0, 256 - l);
BN_free (dh_power);
BN_free (&auth_key_num);
BN_free (&dh_g);
BN_free (&g_a);
BN_free (&dh_prime);
//hexdump (auth_key, auth_key + 256);
sha1 ((unsigned char *) (packet_buffer + 5), (packet_ptr - packet_buffer - 5) * 4, (unsigned char *) packet_buffer);
//hexdump ((char *)packet_buffer, (char *)packet_ptr);
l = encrypt_packet_buffer_aes_unauth (server_nonce, new_nonce);
clear_packet ();
out_int (CODE_set_client_DH_params);
out_ints ((int *) nonce, 4);
out_ints ((int *) server_nonce, 4);
out_cstring ((char *) encrypt_buffer, l);
c_state = st_client_dh_sent;
return rpc_send_packet (c);
}
int process_auth_complete (struct connection *c UU, char *packet, int len) {
if (verbosity) {
logprintf ( "process_dh_answer(), len=%d\n", len);
}
assert (len == 72);
assert (!*(long long *) packet);
assert (*(int *) (packet + 16) == len - 20);
assert (!(len & 3));
assert (*(int *) (packet + 20) == CODE_dh_gen_ok);
assert (!memcmp (packet + 24, nonce, 16));
assert (!memcmp (packet + 40, server_nonce, 16));
static unsigned char tmp[44], sha1_buffer[20];
memcpy (tmp, new_nonce, 32);
tmp[32] = 1;
//GET_DC(c)->auth_key_id = *(long long *)(sha1_buffer + 12);
bl_do_set_auth_key_id (GET_DC(c)->id, (unsigned char *)GET_DC(c)->auth_key);
sha1 ((unsigned char *)GET_DC(c)->auth_key, 256, sha1_buffer);
memcpy (tmp + 33, sha1_buffer, 8);
sha1 (tmp, 41, sha1_buffer);
assert (!memcmp (packet + 56, sha1_buffer + 4, 16));
GET_DC(c)->server_salt = *(long long *)server_nonce ^ *(long long *)new_nonce;
if (verbosity >= 3) {
logprintf ( "auth_key_id=%016llx\n", GET_DC(c)->auth_key_id);
}
//kprintf ("OK\n");
//c->status = conn_error;
//sleep (1);
c_state = st_authorized;
//return 1;
if (verbosity) {
logprintf ( "Auth success\n");
}
auth_success ++;
GET_DC(c)->flags |= 1;
write_auth_file ();
return 1;
}
/*
*
* AUTHORIZED (MAIN) PROTOCOL PART
*
*/
struct encrypted_message enc_msg;
long long client_last_msg_id, server_last_msg_id;
double get_server_time (struct dc *DC) {
if (!DC->server_time_udelta) {
DC->server_time_udelta = get_utime (CLOCK_REALTIME) - get_utime (CLOCK_MONOTONIC);
}
return get_utime (CLOCK_MONOTONIC) + DC->server_time_udelta;
}
long long generate_next_msg_id (struct dc *DC) {
long long next_id = (long long) (get_server_time (DC) * (1LL << 32)) & -4;
if (next_id <= client_last_msg_id) {
next_id = client_last_msg_id += 4;
} else {
client_last_msg_id = next_id;
}
return next_id;
}
void init_enc_msg (struct session *S, int useful) {
struct dc *DC = S->dc;
assert (DC->auth_key_id);
enc_msg.auth_key_id = DC->auth_key_id;
// assert (DC->server_salt);
enc_msg.server_salt = DC->server_salt;
if (!S->session_id) {
secure_random (&S->session_id, 8);
}
enc_msg.session_id = S->session_id;
//enc_msg.auth_key_id2 = auth_key_id;
enc_msg.msg_id = generate_next_msg_id (DC);
//enc_msg.msg_id -= 0x10000000LL * (lrand48 () & 15);
//kprintf ("message id %016llx\n", enc_msg.msg_id);
enc_msg.seq_no = S->seq_no;
if (useful) {
enc_msg.seq_no |= 1;
}
S->seq_no += 2;
};
int aes_encrypt_message (struct dc *DC, struct encrypted_message *enc) {
unsigned char sha1_buffer[20];
const int MINSZ = offsetof (struct encrypted_message, message);
const int UNENCSZ = offsetof (struct encrypted_message, server_salt);
int enc_len = (MINSZ - UNENCSZ) + enc->msg_len;
assert (enc->msg_len >= 0 && enc->msg_len <= MAX_MESSAGE_INTS * 4 - 16 && !(enc->msg_len & 3));
sha1 ((unsigned char *) &enc->server_salt, enc_len, sha1_buffer);
//printf ("enc_len is %d\n", enc_len);
if (verbosity >= 2) {
logprintf ( "sending message with sha1 %08x\n", *(int *)sha1_buffer);
}
memcpy (enc->msg_key, sha1_buffer + 4, 16);
init_aes_auth (DC->auth_key, enc->msg_key, AES_ENCRYPT);
//hexdump ((char *)enc, (char *)enc + enc_len + 24);
return pad_aes_encrypt ((char *) &enc->server_salt, enc_len, (char *) &enc->server_salt, MAX_MESSAGE_INTS * 4 + (MINSZ - UNENCSZ));
}
long long encrypt_send_message (struct connection *c, int *msg, int msg_ints, int useful) {
struct dc *DC = GET_DC(c);
struct session *S = c->session;
assert (S);
const int UNENCSZ = offsetof (struct encrypted_message, server_salt);
if (msg_ints <= 0 || msg_ints > MAX_MESSAGE_INTS - 4) {
return -1;
}
if (msg) {
memcpy (enc_msg.message, msg, msg_ints * 4);
enc_msg.msg_len = msg_ints * 4;
} else {
if ((enc_msg.msg_len & 0x80000003) || enc_msg.msg_len > MAX_MESSAGE_INTS * 4 - 16) {
return -1;
}
}
init_enc_msg (S, useful);
//hexdump ((char *)msg, (char *)msg + (msg_ints * 4));
int l = aes_encrypt_message (DC, &enc_msg);
//hexdump ((char *)&enc_msg, (char *)&enc_msg + l + 24);
assert (l > 0);
rpc_send_message (c, &enc_msg, l + UNENCSZ);
return client_last_msg_id;
}
int longpoll_count, good_messages;
int auth_work_start (struct connection *c UU) {
return 1;
}
void rpc_execute_answer (struct connection *c, long long msg_id UU);
int unread_messages;
int our_id;
int pts;
int qts;
int last_date;
int seq;
void fetch_pts (void) {
int p = fetch_int ();
if (p <= pts) { return; }
if (p != pts + 1) {
if (pts) {
//logprintf ("Hole in pts p = %d, pts = %d\n", p, pts);
// get difference should be here
pts = p;
} else {
pts = p;
}
} else {
pts ++;
}
bl_do_set_pts (pts);
}
void fetch_qts (void) {
int p = fetch_int ();
if (p <= qts) { return; }
if (p != qts + 1) {
if (qts) {
//logprintf ("Hole in qts\n");
// get difference should be here
qts = p;
} else {
qts = p;
}
} else {
qts ++;
}
bl_do_set_qts (qts);
}
void fetch_date (void) {
int p = fetch_int ();
if (p > last_date) {
last_date = p;
bl_do_set_date (last_date);
}
}
void fetch_seq (void) {
int x = fetch_int ();
if (x > seq + 1) {
logprintf ("Hole in seq: seq = %d, x = %d\n", seq, x);
//do_get_difference ();
//seq = x;
} else if (x == seq + 1) {
seq = x;
bl_do_set_seq (seq);
}
}
void work_update_binlog (void) {
unsigned op = fetch_int ();
switch (op) {
case CODE_update_user_name:
{
peer_id_t user_id = MK_USER (fetch_int ());
peer_t *UC = user_chat_get (user_id);
if (UC) {
struct user *U = &UC->user;
if (U->first_name) { tfree_str (U->first_name); }
if (U->last_name) { tfree_str (U->last_name); }
if (U->print_name) {
peer_delete_name (UC);
tfree_str (U->print_name);
}
U->first_name = fetch_str_dup ();
U->last_name = fetch_str_dup ();
U->print_name = create_print_name (U->id, U->first_name, U->last_name, 0, 0);
peer_insert_name ((void *)U);
} else {
fetch_skip_str ();
fetch_skip_str ();
}
}
break;
case CODE_update_user_photo:
{
peer_id_t user_id = MK_USER (fetch_int ());
peer_t *UC = user_chat_get (user_id);
fetch_date ();
if (UC) {
struct user *U = &UC->user;
unsigned y = fetch_int ();
if (y == CODE_user_profile_photo_empty) {
U->photo_id = 0;
U->photo_big.dc = -2;
U->photo_small.dc = -2;
} else {
assert (y == CODE_user_profile_photo);
U->photo_id = fetch_long ();
fetch_file_location (&U->photo_small);
fetch_file_location (&U->photo_big);
}
} else {
struct file_location t;
unsigned y = fetch_int ();
if (y == CODE_user_profile_photo_empty) {
} else {
assert (y == CODE_user_profile_photo);
fetch_long (); // photo_id
fetch_file_location (&t);
fetch_file_location (&t);
}
}
fetch_bool ();
}
break;
default:
assert (0);
}
}
void work_update (struct connection *c UU, long long msg_id UU) {
unsigned op = fetch_int ();
switch (op) {
case CODE_update_new_message:
{
struct message *M = fetch_alloc_message ();
assert (M);
fetch_pts ();
unread_messages ++;
print_message (M);
update_prompt ();
break;
};
case CODE_update_message_i_d:
{
int id = fetch_int (); // id
int new = fetch_long (); // random_id
struct message *M = message_get (new);
if (M) {
bl_do_set_msg_id (M, id);
}
}
break;
case CODE_update_read_messages:
{
assert (fetch_int () == (int)CODE_vector);
int n = fetch_int ();
int i;
for (i = 0; i < n; i++) {
int id = fetch_int ();
struct message *M = message_get (id);
if (M) {
bl_do_set_unread (M, 0);
}
}
fetch_pts ();
if (log_level >= 1) {
print_start ();
push_color (COLOR_YELLOW);
print_date (time (0));
printf (" %d messages marked as read\n", n);
pop_color ();
print_end ();
}
}
break;
case CODE_update_user_typing:
{
peer_id_t id = MK_USER (fetch_int ());
peer_t *U = user_chat_get (id);
if (log_level >= 2) {
print_start ();
push_color (COLOR_YELLOW);
print_date (time (0));
printf (" User ");
print_user_name (id, U);
printf (" is typing....\n");
pop_color ();
print_end ();
}
}
break;
case CODE_update_chat_user_typing:
{
peer_id_t chat_id = MK_CHAT (fetch_int ());
peer_id_t id = MK_USER (fetch_int ());
peer_t *C = user_chat_get (chat_id);
peer_t *U = user_chat_get (id);
if (log_level >= 2) {
print_start ();
push_color (COLOR_YELLOW);
print_date (time (0));
printf (" User ");
print_user_name (id, U);
printf (" is typing in chat ");
print_chat_name (chat_id, C);
printf ("....\n");
pop_color ();
print_end ();
}
}
break;
case CODE_update_user_status:
{
peer_id_t user_id = MK_USER (fetch_int ());
peer_t *U = user_chat_get (user_id);
if (U) {
fetch_user_status (&U->user.status);
if (log_level >= 3) {
print_start ();
push_color (COLOR_YELLOW);