/**
* \internal Wysyła do serwera żądanie nadania identyfikatora sesji
*
* \param sess Struktura sesji
* \param type Rodzaj połączenia (\c GG_DCC7_TYPE_FILE lub \c GG_DCC7_TYPE_VOICE)
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*/
static int gg_dcc7_request_id(struct gg_session *sess, uint32_t type)
{
struct gg_dcc7_id_request pkt;
gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_request_id(%p, %d)\n", sess, type);
if (!sess) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_request_id() invalid parameters\n");
errno = EFAULT;
return -1;
}
if (sess->state != GG_STATE_CONNECTED) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_request_id() not connected\n");
errno = ENOTCONN;
return -1;
}
if (type != GG_DCC7_TYPE_VOICE && type != GG_DCC7_TYPE_FILE) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_request_id() invalid transfer type (%d)\n", type);
errno = EINVAL;
return -1;
}
memset(&pkt, 0, sizeof(pkt));
pkt.type = gg_fix32(type);
return gg_send_packet(sess, GG_DCC7_ID_REQUEST, &pkt, sizeof(pkt), NULL);
}
/**
* \internal Tworzy gniazdo nasłuchujące i wysyła jego parametry
*
* \param dcc Struktura połączenia
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*/
static int gg_dcc7_listen_and_send_info(struct gg_dcc7 *dcc)
{
struct gg_dcc7_info pkt;
uint16_t external_port;
uint32_t external_addr;
struct in_addr addr;
gg_debug_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_listen_and_send_info(%p)\n", dcc);
if (gg_dcc7_listen(dcc, dcc->sess->client_addr, dcc->sess->client_port) == -1)
return -1;
if (dcc->sess->external_port != 0)
external_port = dcc->sess->external_port;
else
external_port = dcc->local_port;
if (dcc->sess->external_addr != 0)
external_addr = dcc->sess->external_addr;
else
external_addr = dcc->local_addr;
addr.s_addr = external_addr;
gg_debug_dcc(dcc, GG_DEBUG_MISC, "// dcc7_listen_and_send_info() sending IP address %s and port %d\n", inet_ntoa(addr), external_port);
memset(&pkt, 0, sizeof(pkt));
pkt.uin = gg_fix32(dcc->peer_uin);
pkt.type = GG_DCC7_TYPE_P2P;
pkt.id = dcc->cid;
snprintf((char*) pkt.info, sizeof(pkt.info), "%s %d", inet_ntoa(addr), external_port);
snprintf((char*) pkt.hash, sizeof(pkt.hash), "%u", external_addr + external_port * rand());
return gg_send_packet(dcc->sess, GG_DCC7_INFO, &pkt, sizeof(pkt), NULL);
}
/*
* gg_pubdir50()
*
* wysy³a zapytanie katalogu publicznego do serwera.
*
* - sess - sesja,
* - req - zapytanie.
*
* numer sekwencyjny wyszukiwania lub 0 w przypadku b³êdu.
*/
uint32_t gg_pubdir50(struct gg_session *sess, gg_pubdir50_t req)
{
int i, size = 5;
uint32_t res;
char *buf, *p;
struct gg_pubdir50_request *r;
gg_debug(GG_DEBUG_FUNCTION, "** gg_pubdir50(%p, %p);\n", sess, req);
if (!sess || !req) {
gg_debug(GG_DEBUG_MISC, "// gg_pubdir50() invalid arguments\n");
errno = EFAULT;
return 0;
}
if (sess->state != GG_STATE_CONNECTED) {
gg_debug(GG_DEBUG_MISC, "// gg_pubdir50() not connected\n");
errno = ENOTCONN;
return 0;
}
for (i = 0; i < req->entries_count; i++) {
/* wyszukiwanie bierze tylko pierwszy wpis */
if (req->entries[i].num)
continue;
size += strlen(req->entries[i].field) + 1;
size += strlen(req->entries[i].value) + 1;
}
if (!(buf = malloc(size))) {
gg_debug(GG_DEBUG_MISC, "// gg_pubdir50() out of memory (%d bytes)\n", size);
return 0;
}
r = (struct gg_pubdir50_request*) buf;
res = time(NULL);
r->type = req->type;
r->seq = (req->seq) ? gg_fix32(req->seq) : gg_fix32(time(NULL));
req->seq = gg_fix32(r->seq);
for (i = 0, p = buf + 5; i < req->entries_count; i++) {
if (req->entries[i].num)
continue;
strcpy(p, req->entries[i].field);
p += strlen(p) + 1;
strcpy(p, req->entries[i].value);
p += strlen(p) + 1;
}
if (gg_send_packet(sess, GG_PUBDIR50_REQUEST, buf, size, NULL, 0) == -1)
res = 0;
free(buf);
return res;
}
/**
* Przerwanie żądania przesłania pliku.
*
* \param dcc Struktura połączenia
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*
* \ingroup dcc7
*/
int gg_dcc7_abort(struct gg_dcc7 *dcc)
{
struct gg_dcc7_abort pkt;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_FUNCTION, "** gg_dcc7_abort(%p)\n", dcc);
if (!dcc || !dcc->sess) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_abort() invalid parameters\n");
errno = EFAULT;
return -1;
}
memset(&pkt, 0, sizeof(pkt));
pkt.id = dcc->cid;
pkt.uin_from = gg_fix32(dcc->uin);
pkt.uin_to = gg_fix32(dcc->peer_uin);
return gg_send_packet(dcc->sess, GG_DCC7_ABORT, &pkt, sizeof(pkt), NULL);
}
/**
* Odrzuca próbę przesłania pliku.
*
* \param dcc Struktura połączenia
* \param reason Powód odrzucenia
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*
* \ingroup dcc7
*/
int gg_dcc7_reject(struct gg_dcc7 *dcc, int reason)
{
struct gg_dcc7_reject pkt;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_FUNCTION, "** gg_dcc7_reject(%p, %d)\n", dcc, reason);
if (!dcc || !dcc->sess) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_reject() invalid parameters\n");
errno = EFAULT;
return -1;
}
memset(&pkt, 0, sizeof(pkt));
pkt.uin = gg_fix32(dcc->peer_uin);
pkt.id = dcc->cid;
pkt.reason = gg_fix32(reason);
return gg_send_packet(dcc->sess, GG_DCC7_REJECT, &pkt, sizeof(pkt), NULL);
}
/**
* \internal Tworzy gniazdo nasłuchujące i wysyła jego parametry
*
* \param dcc Struktura połączenia
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*/
static int gg_dcc7_listen_and_send_info(struct gg_dcc7 *dcc)
{
struct gg_dcc7_info pkt;
uint16_t external_port;
uint16_t local_port;
uint32_t count;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_FUNCTION, "** gg_dcc7_listen_and_send_info(%p)\n", dcc);
if (!dcc->sess->client_port)
local_port = dcc->sess->external_port;
else
local_port = dcc->sess->client_port;
if (gg_dcc7_listen(dcc, local_port) == -1)
return -1;
if (!dcc->sess->external_port || dcc->local_port != local_port)
external_port = dcc->local_port;
else
external_port = dcc->sess->external_port;
if (!dcc->sess->external_addr || dcc->local_port != local_port)
dcc->local_addr = dcc->sess->client_addr;
else
dcc->local_addr = dcc->sess->external_addr;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// dcc7_listen_and_send_info() sending IP address %s and port %d\n", inet_ntoa(*((struct in_addr*) &dcc->local_addr)), external_port);
memset(&pkt, 0, sizeof(pkt));
pkt.uin = gg_fix32(dcc->peer_uin);
pkt.type = GG_DCC7_TYPE_P2P;
pkt.id = dcc->cid;
snprintf((char*) pkt.info, sizeof(pkt.info), "%s %d", inet_ntoa(*((struct in_addr*) &dcc->local_addr)), external_port);
// TODO: implement hash count
// we MUST fill hash to recive from server request for server connection
//snprintf((char*) pkt.hash, sizeof(pkt.hash), "0");
count = dcc->local_addr + external_port * rand();
mir_snprintf(pkt.hash, sizeof(pkt.hash), "%d", count);
return gg_send_packet(dcc->sess, GG_DCC7_INFO, &pkt, sizeof(pkt), NULL);
}
/**
* \internal Tworzy gniazdo nasłuchujące i wysyła jego parametry
*
* \param dcc Struktura połączenia
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*/
static int gg_dcc7_listen_and_send_info(struct gg_dcc7 *dcc)
{
struct gg_dcc7_info pkt;
gg_debug_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_listen_and_send_info(%p)\n", dcc);
// XXX dać możliwość konfiguracji?
dcc->local_addr = dcc->sess->client_addr;
if (gg_dcc7_listen(dcc, 0) == -1)
return -1;
memset(&pkt, 0, sizeof(pkt));
pkt.uin = gg_fix32(dcc->peer_uin);
pkt.type = GG_DCC7_TYPE_P2P;
pkt.id = dcc->cid;
snprintf((char*) pkt.info, sizeof(pkt.info), "%s %d", inet_ntoa(*((struct in_addr*) &dcc->local_addr)), dcc->local_port);
return gg_send_packet(dcc->sess, GG_DCC7_INFO, &pkt, sizeof(pkt), NULL);
}
/**
* \internal Obsługuje pakiet identyfikatora połączenia bezpośredniego.
*
* \param sess Struktura sesji
* \param e Struktura zdarzenia
* \param payload Treść pakietu
* \param len Długość pakietu
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*/
int gg_dcc7_handle_id(struct gg_session *sess, struct gg_event *e, void *payload, int len)
{
struct gg_dcc7_id_reply *p = payload;
struct gg_dcc7 *tmp;
gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_handle_id(%p, %p, %p, %d)\n", sess, e, payload, len);
for (tmp = sess->dcc7_list; tmp; tmp = tmp->next) {
gg_debug_session(sess, GG_DEBUG_MISC, "// checking dcc %p, state %d, type %d\n", tmp, tmp->state, tmp->dcc_type);
if (tmp->state != GG_STATE_REQUESTING_ID || tmp->dcc_type != (int)gg_fix32(p->type))
continue;
tmp->cid = p->id;
switch (tmp->dcc_type) {
case GG_DCC7_TYPE_FILE:
{
struct gg_dcc7_new s;
memset(&s, 0, sizeof(s));
s.id = tmp->cid;
s.type = gg_fix32(GG_DCC7_TYPE_FILE);
s.uin_from = gg_fix32(tmp->uin);
s.uin_to = gg_fix32(tmp->peer_uin);
s.size = gg_fix32(tmp->size);
strncpy((char*) s.filename, (char*) tmp->filename, GG_DCC7_FILENAME_LEN);
tmp->state = GG_STATE_WAITING_FOR_ACCEPT;
tmp->timeout = GG_DCC7_TIMEOUT_FILE_ACK;
return gg_send_packet(sess, GG_DCC7_NEW, &s, sizeof(s), NULL);
}
}
}
return 0;
}
/**
* Potwierdza chęć odebrania pliku.
*
* \param dcc Struktura połączenia
* \param offset Początkowy offset przy wznawianiu przesyłania pliku
*
* \note Biblioteka nie zmienia położenia w odbieranych plikach. Jeśli offset
* początkowy jest różny od zera, należy ustawić go funkcją \c lseek() lub
* podobną.
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*
* \ingroup dcc7
*/
int gg_dcc7_accept(struct gg_dcc7 *dcc, unsigned int offset)
{
struct gg_dcc7_accept pkt;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_FUNCTION, "** gg_dcc7_accept(%p, %d)\n", dcc, offset);
if (!dcc || !dcc->sess) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_accept() invalid parameters\n");
errno = EFAULT;
return -1;
}
memset(&pkt, 0, sizeof(pkt));
pkt.uin = gg_fix32(dcc->peer_uin);
pkt.id = dcc->cid;
pkt.offset = gg_fix32(offset);
if (gg_send_packet(dcc->sess, GG_DCC7_ACCEPT, &pkt, sizeof(pkt), NULL) == -1)
return -1;
dcc->offset = offset;
return gg_dcc7_listen_and_send_info(dcc);
}
/**
* Wysyła zapytanie katalogu publicznego do serwera.
*
* \param sess Struktura sesji
* \param req Zapytanie
*
* \return Numer sekwencyjny zapytania lub 0 w przypadku błędu
*
* \ingroup pubdir50
*/
uint32_t gg_pubdir50(struct gg_session *sess, gg_pubdir50_t req)
{
size_t size = 5;
int i;
uint32_t res;
char *buf, *p;
struct gg_pubdir50_request *r;
gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_pubdir50(%p, %p);\n", sess, req);
if (!sess || !req) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_pubdir50() invalid arguments\n");
errno = EFAULT;
return 0;
}
if (sess->state != GG_STATE_CONNECTED) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_pubdir50() not connected\n");
errno = ENOTCONN;
return 0;
}
for (i = 0; i < req->entries_count; i++) {
/* wyszukiwanie bierze tylko pierwszy wpis */
if (req->entries[i].num)
continue;
if (sess->encoding == GG_ENCODING_CP1250) {
size += strlen(req->entries[i].field) + 1;
size += strlen(req->entries[i].value) + 1;
} else {
char *tmp;
tmp = gg_utf8_to_cp(req->entries[i].field);
if (tmp == NULL)
return -1;
size += strlen(tmp) + 1;
free(tmp);
tmp = gg_utf8_to_cp(req->entries[i].value);
if (tmp == NULL)
return -1;
size += strlen(tmp) + 1;
free(tmp);
}
}
if (!(buf = (char*)malloc(size))) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_pubdir50() out of memory (%d bytes)\n", size);
return 0;
}
if (!req->seq)
req->seq = (uint32_t)time(NULL);
res = req->seq;
r = (struct gg_pubdir50_request*) buf;
r->type = req->type;
r->seq = gg_fix32(req->seq);
for (i = 0, p = buf + 5; i < req->entries_count; i++) {
if (req->entries[i].num)
continue;
if (sess->encoding == GG_ENCODING_CP1250) {
strcpy(p, req->entries[i].field);
p += strlen(p) + 1;
strcpy(p, req->entries[i].value);
p += strlen(p) + 1;
} else {
char *tmp;
tmp = gg_utf8_to_cp(req->entries[i].field);
if (tmp == NULL) {
free(buf);
return -1;
}
strcpy(p, tmp);
p += strlen(tmp) + 1;
free(tmp);
tmp = gg_utf8_to_cp(req->entries[i].value);
if (tmp == NULL) {
free(buf);
return -1;
}
strcpy(p, tmp);
p += strlen(tmp) + 1;
free(tmp);
}
}
if (gg_send_packet(sess, GG_PUBDIR50_REQUEST, buf, size, NULL, 0) == -1)
res = 0;
free(buf);
return res;
}
static void test_send_packet(void)
{
struct gg_session gs;
struct gg_session_private gsp;
gs_init(&gs, &gsp, 1);
/* Poprawne wysyłanie */
if (gg_send_packet(&gs, 0x1234, "ABC", 3, "DEF", 3, NULL) != 0) {
if (!send_called)
fprintf(stderr, "send hook not called\n");
else
fprintf(stderr, "Expected success\n");
exit(1);
}
if (gs.send_buf != NULL || gs.send_left != 0) {
fprintf(stderr, "Unexpected queue\n");
exit(1);
}
/* Błąd wysyłania */
if (gg_send_packet(&gs, 0x2345, "GHI", 3, NULL) != -1) {
fprintf(stderr, "Expected failure\n");
exit(1);
}
if (gs.send_buf != NULL || gs.send_left != 0) {
fprintf(stderr, "Unexpected queue\n");
exit(1);
}
/* EINTR na początek, niech wznowi i potem niekompletna transmisja */
if (gg_send_packet(&gs, 0x3456, "JKLMNO", 6, NULL) != 0) {
fprintf(stderr, "Expected success\n");
exit(1);
}
if (gs.send_buf == NULL || gs.send_left != 6 || memcmp(gs.send_buf, "JKLMNO", 6) != 0) {
fprintf(stderr, "Not queued properly\n");
exit(1);
}
free(gs.send_buf);
/* EAGAIN na początek */
gs_init(&gs, &gsp, 1);
if (gg_send_packet(&gs, 0x4567, "PQRSTU", 6, NULL) != 0) {
fprintf(stderr, "Expected success\n");
exit(1);
}
if (gs.send_buf == NULL || gs.send_left != 14 || memcmp(gs.send_buf,
"\x67\x45\x00\x00\x06\x00\x00\x00""PQRSTU", 14) != 0)
{
fprintf(stderr, "Not queued properly\n");
exit(1);
}
/* Wyślij jeszcze trochę, żeby dodało do kolejki */
if (gg_send_packet(&gs, 0x5678, "VWX", 3, NULL) != 0) {
fprintf(stderr, "Expected success\n");
exit(1);
}
if (gs.send_buf == NULL || gs.send_left != 25 || memcmp(gs.send_buf,
"\x67\x45\x00\x00\x06\x00\x00\x00""PQRSTU""\x78\x56\x00\x00\x03"
"\x00\x00\x00""VWX", 25) != 0)
{
fprintf(stderr, "Not queued properly\n");
exit(1);
}
free(gs.send_buf);
/* Sprawdź, czy wszystko już sprawdzone */
if (send_state != sizeof(send_list) / sizeof(send_list[0])) {
fprintf(stderr, "More sends expected\n");
exit(1);
}
fprintf(stderr, "Test succeeded.\n");
}
/*
* gg_watch_fd()
*
* funkcja, któr± nale¿y wywo³aæ, gdy co¶ siê stanie z obserwowanym
* deskryptorem. zwraca klientowi informacjê o tym, co siê dzieje.
*
* - sess - opis sesji
*
* wska¼nik do struktury gg_event, któr± trzeba zwolniæ pó¼niej
* za pomoc± gg_event_free(). jesli rodzaj zdarzenia jest równy
* GG_EVENT_NONE, nale¿y je zignorowaæ. je¶li zwróci³o NULL,
* sta³o siê co¶ niedobrego -- albo zabrak³o pamiêci albo zerwa³o
* po³±czenie.
*/
struct gg_event *gg_watch_fd(struct gg_session *sess)
{
struct gg_event *e;
int res = 0;
int port = 0;
int errno2 = 0;
gg_debug(GG_DEBUG_FUNCTION, "** gg_watch_fd(%p);\n", sess);
if (!sess) {
errno = EFAULT;
return NULL;
}
if (!(e = (void*) calloc(1, sizeof(*e)))) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() not enough memory for event data\n");
return NULL;
}
e->type = GG_EVENT_NONE;
switch (sess->state) {
case GG_STATE_RESOLVING:
{
struct in_addr addr;
int failed = 0;
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_RESOLVING\n");
if (read(sess->fd, &addr, sizeof(addr)) < (signed)sizeof(addr) || addr.s_addr == INADDR_NONE) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() resolving failed\n");
failed = 1;
errno2 = errno;
}
close(sess->fd);
sess->fd = -1;
#ifndef __GG_LIBGADU_HAVE_PTHREAD
waitpid(sess->pid, NULL, 0);
sess->pid = -1;
#else
if (sess->resolver) {
gg_resolve_pthread_cleanup(sess->resolver, 0);
sess->resolver = NULL;
}
#endif
if (failed) {
errno = errno2;
goto fail_resolving;
}
/* je¶li jeste¶my w resolverze i mamy ustawiony port
* proxy, znaczy, ¿e resolvowali¶my proxy. zatem
* wpiszmy jego adres. */
if (sess->proxy_port)
sess->proxy_addr = addr.s_addr;
/* zapiszmy sobie adres huba i adres serwera (do
* bezpo¶redniego po³±czenia, je¶li hub le¿y)
* z resolvera. */
if (sess->proxy_addr && sess->proxy_port)
port = sess->proxy_port;
else {
sess->server_addr = sess->hub_addr = addr.s_addr;
port = GG_APPMSG_PORT;
}
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() resolved, connecting to %s:%d\n", inet_ntoa(addr), port);
/* ³±czymy siê albo z hubem, albo z proxy, zale¿nie
* od tego, co resolvowali¶my. */
if ((sess->fd = gg_connect(&addr, port, sess->async)) == -1) {
/* je¶li w trybie asynchronicznym gg_connect()
* zwróci b³±d, nie ma sensu próbowaæ dalej. */
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s), critical\n", errno, strerror(errno));
goto fail_connecting;
}
/* je¶li podano serwer i ³±czmy siê przez proxy,
* jest to bezpo¶rednie po³±czenie, inaczej jest
* do huba. */
sess->state = (sess->proxy_addr && sess->proxy_port && sess->server_addr) ? GG_STATE_CONNECTING_GG : GG_STATE_CONNECTING_HUB;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
case GG_STATE_CONNECTING_HUB:
{
char buf[1024], *client, *auth;
int res = 0, res_size = sizeof(res);
const char *host, *appmsg;
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_CONNECTING_HUB\n");
/* je¶li asynchroniczne, sprawdzamy, czy nie wyst±pi³
* przypadkiem jaki¶ b³±d. */
if (sess->async && (getsockopt(sess->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) || res)) {
/* no tak, nie uda³o siê po³±czyæ z proxy. nawet
* nie próbujemy dalej. */
if (sess->proxy_addr && sess->proxy_port) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection to proxy failed (errno=%d, %s)\n", res, strerror(res));
goto fail_connecting;
}
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection to hub failed (errno=%d, %s), trying direct connection\n", res, strerror(res));
close(sess->fd);
if ((sess->fd = gg_connect(&sess->hub_addr, GG_DEFAULT_PORT, sess->async)) == -1) {
/* przy asynchronicznych, gg_connect()
* zwraca -1 przy b³êdach socket(),
* ioctl(), braku routingu itd. dlatego
* nawet nie próbujemy dalej. */
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() direct connection failed (errno=%d, %s), critical\n", errno, strerror(errno));
goto fail_connecting;
}
sess->state = GG_STATE_CONNECTING_GG;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connected to hub, sending query\n");
if (!(client = gg_urlencode((sess->client_version) ? sess->client_version : GG_DEFAULT_CLIENT_VERSION))) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() out of memory for client version\n");
goto fail_connecting;
}
if (!gg_proxy_http_only && sess->proxy_addr && sess->proxy_port)
host = "http://" GG_APPMSG_HOST;
else
host = "";
#ifdef __GG_LIBGADU_HAVE_OPENSSL
if (sess->ssl)
appmsg = "appmsg3.asp";
else
#endif
appmsg = "appmsg2.asp";
auth = gg_proxy_auth();
snprintf(buf, sizeof(buf) - 1,
"GET %s/appsvc/%s?fmnumber=%u&version=%s&lastmsg=%d HTTP/1.0\r\n"
"Host: " GG_APPMSG_HOST "\r\n"
"User-Agent: " GG_HTTP_USERAGENT "\r\n"
"Pragma: no-cache\r\n"
"%s"
"\r\n", host, appmsg, sess->uin, client, sess->last_sysmsg, (auth) ? auth : "");
if (auth)
free(auth);
free(client);
/* zwolnij pamiêæ po wersji klienta. */
if (sess->client_version) {
free(sess->client_version);
sess->client_version = NULL;
}
gg_debug(GG_DEBUG_MISC, "=> -----BEGIN-HTTP-QUERY-----\n%s\n=> -----END-HTTP-QUERY-----\n", buf);
/* zapytanie jest krótkie, wiêc zawsze zmie¶ci siê
* do bufora gniazda. je¶li write() zwróci mniej,
* sta³o siê co¶ z³ego. */
if (write(sess->fd, buf, strlen(buf)) < (signed)strlen(buf)) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() sending query failed\n");
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_WRITING;
sess->state = GG_STATE_IDLE;
close(sess->fd);
sess->fd = -1;
break;
}
sess->state = GG_STATE_READING_DATA;
sess->check = GG_CHECK_READ;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
case GG_STATE_READING_DATA:
{
char buf[1024], *tmp, *host;
int port = GG_DEFAULT_PORT;
struct in_addr addr;
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_READING_DATA\n");
/* czytamy liniê z gniazda i obcinamy \r\n. */
gg_read_line(sess->fd, buf, sizeof(buf) - 1);
gg_chomp(buf);
gg_debug(GG_DEBUG_TRAFFIC, "// gg_watch_fd() received http header (%s)\n", buf);
/* sprawdzamy, czy wszystko w porz±dku. */
if (strncmp(buf, "HTTP/1.", 7) || strncmp(buf + 9, "200", 3)) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() that's not what we've expected, trying direct connection\n");
close(sess->fd);
/* je¶li otrzymali¶my jakie¶ dziwne informacje,
* próbujemy siê ³±czyæ z pominiêciem huba. */
if (sess->proxy_addr && sess->proxy_port) {
if ((sess->fd = gg_connect(&sess->proxy_addr, sess->proxy_port, sess->async)) == -1) {
/* trudno. nie wysz³o. */
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection to proxy failed (errno=%d, %s)\n", errno, strerror(errno));
goto fail_connecting;
}
sess->state = GG_STATE_CONNECTING_GG;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
sess->port = GG_DEFAULT_PORT;
/* ³±czymy siê na port 8074 huba. */
if ((sess->fd = gg_connect(&sess->hub_addr, sess->port, sess->async)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s), trying https\n", errno, strerror(errno));
sess->port = GG_HTTPS_PORT;
/* ³±czymy siê na port 443. */
if ((sess->fd = gg_connect(&sess->hub_addr, sess->port, sess->async)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s)\n", errno, strerror(errno));
goto fail_connecting;
}
}
sess->state = GG_STATE_CONNECTING_GG;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
/* ignorujemy resztê nag³ówka. */
while (strcmp(buf, "\r\n") && strcmp(buf, ""))
gg_read_line(sess->fd, buf, sizeof(buf) - 1);
/* czytamy pierwsz± liniê danych. */
gg_read_line(sess->fd, buf, sizeof(buf) - 1);
gg_chomp(buf);
/* je¶li pierwsza liczba w linii nie jest równa zeru,
* oznacza to, ¿e mamy wiadomo¶æ systemow±. */
if (atoi(buf)) {
char tmp[1024], *foo, *sysmsg_buf = NULL;
int len = 0;
while (gg_read_line(sess->fd, tmp, sizeof(tmp) - 1)) {
if (!(foo = realloc(sysmsg_buf, len + strlen(tmp) + 2))) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() out of memory for system message, ignoring\n");
break;
}
sysmsg_buf = foo;
if (!len)
strcpy(sysmsg_buf, tmp);
else
strcat(sysmsg_buf, tmp);
len += strlen(tmp);
}
e->type = GG_EVENT_MSG;
e->event.msg.msgclass = atoi(buf);
e->event.msg.sender = 0;
e->event.msg.message = sysmsg_buf;
}
close(sess->fd);
gg_debug(GG_DEBUG_TRAFFIC, "// gg_watch_fd() received http data (%s)\n", buf);
/* analizujemy otrzymane dane. */
tmp = buf;
while (*tmp && *tmp != ' ')
tmp++;
while (*tmp && *tmp == ' ')
tmp++;
host = tmp;
while (*tmp && *tmp != ' ')
tmp++;
*tmp = 0;
if ((tmp = strchr(host, ':'))) {
*tmp = 0;
port = atoi(tmp + 1);
}
if (!strcmp(host, "notoperating")) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() service unavailable\n", errno, strerror(errno));
sess->fd = -1;
goto fail_unavailable;
}
addr.s_addr = inet_addr(host);
sess->server_addr = addr.s_addr;
if (!gg_proxy_http_only && sess->proxy_addr && sess->proxy_port) {
/* je¶li mamy proxy, ³±czymy siê z nim. */
if ((sess->fd = gg_connect(&sess->proxy_addr, sess->proxy_port, sess->async)) == -1) {
/* nie wysz³o? trudno. */
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection to proxy failed (errno=%d, %s)\n", errno, strerror(errno));
goto fail_connecting;
}
sess->state = GG_STATE_CONNECTING_GG;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
sess->port = port;
/* ³±czymy siê z w³a¶ciwym serwerem. */
if ((sess->fd = gg_connect(&addr, sess->port, sess->async)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s), trying https\n", errno, strerror(errno));
sess->port = GG_HTTPS_PORT;
/* nie wysz³o? próbujemy portu 443. */
if ((sess->fd = gg_connect(&addr, GG_HTTPS_PORT, sess->async)) == -1) {
/* ostatnia deska ratunku zawiod³a?
* w takim razie zwijamy manatki. */
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s)\n", errno, strerror(errno));
goto fail_connecting;
}
}
sess->state = GG_STATE_CONNECTING_GG;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
case GG_STATE_CONNECTING_GG:
{
int res = 0, res_size = sizeof(res);
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_CONNECTING_GG\n");
/* je¶li wyst±pi³ b³±d podczas ³±czenia siê... */
if (sess->async && (sess->timeout == 0 || getsockopt(sess->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) || res)) {
/* je¶li nie uda³o siê po³±czenie z proxy,
* nie mamy czego próbowaæ wiêcej. */
if (sess->proxy_addr && sess->proxy_port) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection to proxy failed (errno=%d, %s)\n", res, strerror(res));
goto fail_connecting;
}
close(sess->fd);
sess->fd = -1;
#ifdef ETIMEDOUT
if (sess->timeout == 0)
errno = ETIMEDOUT;
#endif
#ifdef __GG_LIBGADU_HAVE_OPENSSL
/* je¶li logujemy siê po TLS, nie próbujemy
* siê ³±czyæ ju¿ z niczym innym w przypadku
* b³êdu. nie do¶æ, ¿e nie ma sensu, to i
* trzeba by siê bawiæ w tworzenie na nowo
* SSL i SSL_CTX. */
if (sess->ssl) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s)\n", res, strerror(res));
goto fail_connecting;
}
#endif
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s), trying https\n", res, strerror(res));
sess->port = GG_HTTPS_PORT;
/* próbujemy na port 443. */
if ((sess->fd = gg_connect(&sess->server_addr, sess->port, sess->async)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connection failed (errno=%d, %s)\n", errno, strerror(errno));
goto fail_connecting;
}
}
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() connected\n");
if (gg_proxy_http_only)
sess->proxy_port = 0;
/* je¶li mamy proxy, wy¶lijmy zapytanie. */
if (sess->proxy_addr && sess->proxy_port) {
char buf[100], *auth = gg_proxy_auth();
struct in_addr addr;
if (sess->server_addr)
addr.s_addr = sess->server_addr;
else
addr.s_addr = sess->hub_addr;
snprintf(buf, sizeof(buf), "CONNECT %s:%d HTTP/1.0\r\n", inet_ntoa(addr), sess->port);
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() proxy request:\n// %s", buf);
/* wysy³amy zapytanie. jest ono na tyle krótkie,
* ¿e musi siê zmie¶ciæ w buforze gniazda. je¶li
* write() zawiedzie, sta³o siê co¶ z³ego. */
if (write(sess->fd, buf, strlen(buf)) < (signed)strlen(buf)) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() can't send proxy request\n");
if (auth)
free(auth);
goto fail_connecting;
}
if (auth) {
gg_debug(GG_DEBUG_MISC, "// %s", auth);
if (write(sess->fd, auth, strlen(auth)) < (signed)strlen(auth)) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() can't send proxy request\n");
free(auth);
goto fail_connecting;
}
free(auth);
}
if (write(sess->fd, "\r\n", 2) < 2) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() can't send proxy request\n");
goto fail_connecting;
}
}
#ifdef __GG_LIBGADU_HAVE_OPENSSL
if (sess->ssl) {
SSL_set_fd(sess->ssl, sess->fd);
sess->state = GG_STATE_TLS_NEGOTIATION;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
#endif
sess->state = GG_STATE_READING_KEY;
sess->check = GG_CHECK_READ;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
#ifdef __GG_LIBGADU_HAVE_OPENSSL
case GG_STATE_TLS_NEGOTIATION:
{
int res;
X509 *peer;
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_TLS_NEGOTIATION\n");
if ((res = SSL_connect(sess->ssl)) <= 0) {
int err = SSL_get_error(sess->ssl, res);
if (res == 0) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() disconnected during TLS negotiation\n");
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_TLS;
sess->state = GG_STATE_IDLE;
close(sess->fd);
sess->fd = -1;
break;
}
if (err == SSL_ERROR_WANT_READ) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() SSL_connect() wants to read\n");
sess->state = GG_STATE_TLS_NEGOTIATION;
sess->check = GG_CHECK_READ;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
} else if (err == SSL_ERROR_WANT_WRITE) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() SSL_connect() wants to write\n");
sess->state = GG_STATE_TLS_NEGOTIATION;
sess->check = GG_CHECK_WRITE;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
} else {
char buf[1024];
ERR_error_string_n(ERR_get_error(), buf, sizeof(buf));
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() SSL_connect() bailed out: %s\n", buf);
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_TLS;
sess->state = GG_STATE_IDLE;
close(sess->fd);
sess->fd = -1;
break;
}
}
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() TLS negotiation succeded:\n// cipher: %s\n", SSL_get_cipher_name(sess->ssl));
peer = SSL_get_peer_certificate(sess->ssl);
if (!peer)
gg_debug(GG_DEBUG_MISC, "// WARNING! unable to get peer certificate!\n");
else {
char buf[1024];
X509_NAME_oneline(X509_get_subject_name(peer), buf, sizeof(buf));
gg_debug(GG_DEBUG_MISC, "// cert subject: %s\n", buf);
X509_NAME_oneline(X509_get_issuer_name(peer), buf, sizeof(buf));
gg_debug(GG_DEBUG_MISC, "// cert issuer: %s\n", buf);
}
sess->state = GG_STATE_READING_KEY;
sess->check = GG_CHECK_READ;
sess->timeout = GG_DEFAULT_TIMEOUT;
break;
}
#endif
case GG_STATE_READING_KEY:
{
struct gg_header *h;
struct gg_welcome *w;
struct gg_login60 l;
unsigned int hash;
unsigned char *password = sess->password;
int ret;
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_READING_KEY\n");
memset(&l, 0, sizeof(l));
l.dunno2 = 0xbe;
/* XXX bardzo, bardzo, bardzo g³upi pomys³ na pozbycie
* siê tekstu wrzucanego przez proxy. */
if (sess->proxy_addr && sess->proxy_port) {
char buf[100];
strcpy(buf, "");
gg_read_line(sess->fd, buf, sizeof(buf) - 1);
gg_chomp(buf);
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() proxy response:\n// %s\n", buf);
while (strcmp(buf, "")) {
gg_read_line(sess->fd, buf, sizeof(buf) - 1);
gg_chomp(buf);
if (strcmp(buf, ""))
gg_debug(GG_DEBUG_MISC, "// %s\n", buf);
}
/* XXX niech czeka jeszcze raz w tej samej
* fazie. g³upio, ale dzia³a. */
sess->proxy_port = 0;
break;
}
/* czytaj pierwszy pakiet. */
if (!(h = gg_recv_packet(sess))) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() didn't receive packet (errno=%d, %s)\n", errno, strerror(errno));
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_READING;
sess->state = GG_STATE_IDLE;
errno2 = errno;
close(sess->fd);
errno = errno2;
sess->fd = -1;
break;
}
if (h->type != GG_WELCOME) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() invalid packet received\n");
free(h);
close(sess->fd);
sess->fd = -1;
errno = EINVAL;
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_INVALID;
sess->state = GG_STATE_IDLE;
break;
}
w = (struct gg_welcome*) ((char*) h + sizeof(struct gg_header));
w->key = gg_fix32(w->key);
hash = gg_login_hash(password, w->key);
gg_debug(GG_DEBUG_DUMP, "// gg_watch_fd() challenge %.4x --> hash %.8x\n", w->key, hash);
free(h);
free(sess->password);
sess->password = NULL;
{
struct in_addr dcc_ip;
dcc_ip.s_addr = gg_dcc_ip;
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() gg_dcc_ip = %s\n", inet_ntoa(dcc_ip));
}
if (gg_dcc_ip == (unsigned long) inet_addr("255.255.255.255")) {
struct sockaddr_in sin;
int sin_len = sizeof(sin);
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() detecting address\n");
if (!getsockname(sess->fd, (struct sockaddr*) &sin, &sin_len)) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() detected address to %s\n", inet_ntoa(sin.sin_addr));
l.local_ip = sin.sin_addr.s_addr;
} else {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() unable to detect address\n");
l.local_ip = 0;
}
} else
l.local_ip = gg_dcc_ip;
l.uin = gg_fix32(sess->uin);
l.hash = gg_fix32(hash);
l.status = gg_fix32(sess->initial_status ? sess->initial_status : GG_STATUS_AVAIL);
l.version = gg_fix32(sess->protocol_version);
l.local_port = gg_fix16(gg_dcc_port);
l.image_size = sess->image_size;
if (sess->external_addr && sess->external_port > 1023) {
l.external_ip = sess->external_addr;
l.external_port = gg_fix16(sess->external_port);
}
gg_debug(GG_DEBUG_TRAFFIC, "// gg_watch_fd() sending GG_LOGIN60 packet\n");
ret = gg_send_packet(sess, GG_LOGIN60, &l, sizeof(l), sess->initial_descr, (sess->initial_descr) ? strlen(sess->initial_descr) : 0, NULL);
free(sess->initial_descr);
sess->initial_descr = NULL;
if (ret == -1) {
gg_debug(GG_DEBUG_TRAFFIC, "// gg_watch_fd() sending packet failed. (errno=%d, %s)\n", errno, strerror(errno));
errno2 = errno;
close(sess->fd);
errno = errno2;
sess->fd = -1;
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_WRITING;
sess->state = GG_STATE_IDLE;
break;
}
sess->state = GG_STATE_READING_REPLY;
break;
}
case GG_STATE_READING_REPLY:
{
struct gg_header *h;
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_READING_REPLY\n");
if (!(h = gg_recv_packet(sess))) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() didn't receive packet (errno=%d, %s)\n", errno, strerror(errno));
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_READING;
sess->state = GG_STATE_IDLE;
errno2 = errno;
close(sess->fd);
errno = errno2;
sess->fd = -1;
break;
}
if (h->type == GG_LOGIN_OK || h->type == GG_NEED_EMAIL) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() login succeded\n");
e->type = GG_EVENT_CONN_SUCCESS;
sess->state = GG_STATE_CONNECTED;
sess->timeout = -1;
sess->status = (sess->initial_status) ? sess->initial_status : GG_STATUS_AVAIL;
free(h);
break;
}
if (h->type == GG_LOGIN_FAILED) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() login failed\n");
e->event.failure = GG_FAILURE_PASSWORD;
errno = EACCES;
} else if (h->type == GG_DISCONNECTING) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() too many incorrect password attempts\n");
e->event.failure = GG_FAILURE_INTRUDER;
errno = EACCES;
} else {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() invalid packet\n");
e->event.failure = GG_FAILURE_INVALID;
errno = EINVAL;
}
e->type = GG_EVENT_CONN_FAILED;
sess->state = GG_STATE_IDLE;
errno2 = errno;
close(sess->fd);
errno = errno2;
sess->fd = -1;
free(h);
break;
}
case GG_STATE_CONNECTED:
{
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() GG_STATE_CONNECTED\n");
sess->last_event = time(NULL);
if ((res = gg_watch_fd_connected(sess, e)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_watch_fd() watch_fd_connected failed (errno=%d, %s)\n", errno, strerror(errno));
if (errno == EAGAIN) {
e->type = GG_EVENT_NONE;
res = 0;
} else
res = -1;
}
break;
}
}
done:
if (res == -1) {
free(e);
e = NULL;
}
return e;
fail_connecting:
if (sess->fd != -1) {
errno2 = errno;
close(sess->fd);
errno = errno2;
sess->fd = -1;
}
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_CONNECTING;
sess->state = GG_STATE_IDLE;
goto done;
fail_resolving:
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_RESOLVING;
sess->state = GG_STATE_IDLE;
goto done;
fail_unavailable:
e->type = GG_EVENT_CONN_FAILED;
e->event.failure = GG_FAILURE_UNAVAILABLE;
sess->state = GG_STATE_IDLE;
goto done;
}
/**
* \internal Obsługuje pakiet informacji o połączeniu bezpośrednim.
*
* \param sess Struktura sesji
* \param e Struktura zdarzenia
* \param payload Treść pakietu
* \param len Długość pakietu
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*/
int gg_dcc7_handle_info(struct gg_session *sess, struct gg_event *e, void *payload, int len)
{
struct gg_dcc7_info *p = payload;
struct gg_dcc7 *dcc;
char *tmp;
gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_handle_info(%p, %p, %p, %d)\n", sess, e, payload, len);
gg_debug_session(sess, GG_DEBUG_FUNCTION, "// gg_dcc7_handle_info() received address: %s, hash: %s\n", p->info, p->hash);
if (!(dcc = gg_dcc7_session_find(sess, p->id, gg_fix32(p->uin)))) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() unknown dcc session\n");
return 0;
}
if (dcc->state == GG_STATE_CONNECTED) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() state is already connected\n");
return 0;
}
switch (p->type)
{
case GG_DCC7_TYPE_P2P:
if ((dcc->remote_addr = inet_addr(p->info)) == INADDR_NONE) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() invalid IP address\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return 0;
}
if (!(tmp = strchr(p->info, ' ')) || !(dcc->remote_port = atoi(tmp + 1))) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() invalid IP port\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return 0;
}
if (dcc->state == GG_STATE_WAITING_FOR_INFO) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() wainting for info so send one\n");
gg_dcc7_listen_and_send_info(dcc);
return 0;
}
break;
case GG_DCC7_TYPE_SERVER:
if (!(tmp = strstr(p->info, "GG"))) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() unknown info packet\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return 0;
}
#if defined(GG_CONFIG_HAVE_UINT64_T) && defined(GG_CONFIG_HAVE_STRTOULL)
{
uint64_t cid;
cid = strtoull(tmp + 2, NULL, 0);
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() info.str=%s, info.id=%llu, sess.id=%llu\n", tmp + 2, cid, *((unsigned long long*) &dcc->cid));
cid = gg_fix64(cid);
if (memcmp(&dcc->cid, &cid, sizeof(cid)) != 0) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() invalid session id\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return 0;
}
}
#endif
if (gg_dcc7_get_relay_addr(dcc) == -1) {
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() unable to retrieve relay address\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return 0;
}
// XXX wysyłać dopiero jeśli uda się połączyć z serwerem?
gg_send_packet(dcc->sess, GG_DCC7_INFO, payload, len, NULL);
break;
default:
gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() unhandled transfer type (%d)\n", p->type);
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return 0;
}
// jeśli nadal czekamy na połączenie przychodzące, a druga strona nie
// daje rady i oferuje namiary na siebie, bierzemy co dają.
// if (dcc->state != GG_STATE_WAITING_FOR_INFO && (dcc->state != GG_STATE_LISTENING || dcc->reverse)) {
// gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_info() invalid state\n");
// e->type = GG_EVENT_DCC7_ERROR;
// e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
// e->event.dcc7_error_ex.dcc7 = dcc;
// return 0;
// }
if (dcc->state == GG_STATE_LISTENING) {
gg_sock_close(dcc->fd);
dcc->fd = -1;
dcc->reverse = 1;
}
if (dcc->type == GG_SESSION_DCC7_SEND) {
e->type = GG_EVENT_DCC7_ACCEPT;
e->event.dcc7_accept.dcc7 = dcc;
e->event.dcc7_accept.type = gg_fix32(p->type);
e->event.dcc7_accept.remote_ip = dcc->remote_addr;
e->event.dcc7_accept.remote_port = dcc->remote_port;
} else {
e->type = GG_EVENT_DCC7_PENDING;
e->event.dcc7_pending.dcc7 = dcc;
}
if (dcc->state == GG_STATE_RESOLVING_RELAY)
return 0;
if (gg_dcc7_connect(dcc) == -1) {
if (gg_dcc7_reverse_connect(dcc) == -1) {
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_NET;
e->event.dcc7_error_ex.dcc7 = dcc;
return 0;
}
}
return 0;
}
