/**
* \internal Rozpoczyna połączenie bezpośrednie z danym klientem.
*
* \param ip Adres IP odbiorcy
* \param port Port odbiorcy
* \param my_uin Własny numer
* \param peer_uin Numer odbiorcy
* \param type Rodzaj połączenia (\c GG_SESSION_DCC_SEND lub \c GG_SESSION_DCC_GET)
*
* \return Struktura \c gg_dcc lub \c NULL w przypadku błędu
*/
static struct gg_dcc *gg_dcc_transfer(uint32_t ip, uint16_t port, uin_t my_uin, uin_t peer_uin, int type)
{
struct gg_dcc *d = NULL;
struct in_addr addr;
addr.s_addr = ip;
gg_debug(GG_DEBUG_FUNCTION, "** gg_dcc_transfer(%s, %d, %u, %u, "
"%s);\n", inet_ntoa(addr), port, my_uin, peer_uin,
(type == GG_SESSION_DCC_SEND) ? "SEND" : "GET");
if (!ip || ip == INADDR_NONE || !port || !my_uin || !peer_uin) {
gg_debug(GG_DEBUG_MISC, "// gg_dcc_transfer() invalid arguments\n");
errno = EINVAL;
return NULL;
}
if (!(d = (void*) calloc(1, sizeof(*d)))) {
gg_debug(GG_DEBUG_MISC, "// gg_dcc_transfer() not enough memory\n");
return NULL;
}
d->check = GG_CHECK_WRITE;
d->state = GG_STATE_CONNECTING;
d->type = type;
d->timeout = GG_DEFAULT_TIMEOUT;
d->file_fd = -1;
d->active = 1;
d->fd = -1;
d->uin = my_uin;
d->peer_uin = peer_uin;
if ((d->fd = gg_connect(&addr, port, 1)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_dcc_transfer() connection failed\n");
free(d);
return NULL;
}
return d;
}
/**
* \internal Nawiązuje połączenie bezpośrednie
*
* \param dcc Struktura połączenia
*
* \return 0 jeśli się powiodło, -1 w przypadku błędu
*/
static int gg_dcc7_connect(struct gg_dcc7 *dcc)
{
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_FUNCTION, "** gg_dcc7_connect(%p)\n", dcc);
if (dcc == NULL) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_connect() invalid parameters\n");
errno = EINVAL;
return -1;
}
if ((dcc->fd = gg_connect(&dcc->remote_addr, dcc->remote_port, 1)) == -1) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_connect() connection failed\n");
return -1;
}
dcc->state = GG_STATE_CONNECTING;
dcc->check = GG_CHECK_WRITE;
dcc->timeout = GG_DCC7_TIMEOUT_CONNECT;
dcc->soft_timeout = 1;
return 0;
}
/**
* Rozpoczyna połączenie HTTP.
*
* Funkcja przeprowadza połączenie HTTP przy połączeniu synchronicznym,
* zwracając wynik w polach struktury \c gg_http, lub błąd, gdy sesja się
* nie powiedzie.
*
* Przy połączeniu asynchronicznym, funkcja rozpoczyna połączenie, a dalsze
* etapy będą przeprowadzane po wykryciu zmian (\c watch) na obserwowanym
* deskryptorze (\c fd) i wywołaniu funkcji \c gg_http_watch_fd().
*
* Po zakończeniu, należy zwolnić strukturę za pomocą funkcji
* \c gg_http_free(). Połączenie asynchroniczne można zatrzymać w każdej
* chwili za pomocą \c gg_http_stop().
*
* \param hostname Adres serwera
* \param port Port serwera
* \param async Flaga asynchronicznego połączenia
* \param method Metoda HTTP
* \param path Ścieżka do zasobu (musi być poprzedzona znakiem '/')
* \param header Nagłówek zapytania plus ewentualne dane dla POST
*
* \return Zaalokowana struktura \c gg_http lub NULL, jeśli wystąpił błąd.
*
* \ingroup http
*/
struct gg_http *gg_http_connect(const char *hostname, int port, int async, const char *method, const char *path, const char *header)
{
struct gg_http *h;
if (!hostname || !port || !method || !path || !header) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() invalid arguments\n");
errno = EFAULT;
return NULL;
}
if (!(h = malloc(sizeof(*h))))
return NULL;
memset(h, 0, sizeof(*h));
h->async = async;
h->port = port;
h->fd = -1;
h->type = GG_SESSION_HTTP;
gg_http_set_resolver(h, GG_RESOLVER_DEFAULT);
if (gg_proxy_enabled) {
char *auth = gg_proxy_auth();
h->query = gg_saprintf("%s http://%s:%d%s HTTP/1.0\r\n%s%s",
method, hostname, port, path, (auth) ? auth :
"", header);
hostname = gg_proxy_host;
h->port = port = gg_proxy_port;
free(auth);
} else {
h->query = gg_saprintf("%s %s HTTP/1.0\r\n%s",
method, path, header);
}
if (!h->query) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() not enough memory for query\n");
free(h);
errno = ENOMEM;
return NULL;
}
gg_debug(GG_DEBUG_MISC, "=> -----BEGIN-HTTP-QUERY-----\n%s\n=> -----END-HTTP-QUERY-----\n", h->query);
if (async) {
if (h->resolver_start(&h->fd, &h->resolver, hostname) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() resolver failed\n");
gg_http_free(h);
errno = ENOENT;
return NULL;
}
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() resolver = %p\n", h->resolver);
h->state = GG_STATE_RESOLVING;
h->check = GG_CHECK_READ;
h->timeout = GG_DEFAULT_TIMEOUT;
} else {
struct in_addr addr;
if (gg_gethostbyname(hostname, &addr, 0) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() host not found\n");
gg_http_free(h);
errno = ENOENT;
return NULL;
}
if (!(h->fd = gg_connect(&addr, port, 0)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() connection failed (errno=%d, %s)\n", errno, strerror(errno));
gg_http_free(h);
return NULL;
}
h->state = GG_STATE_CONNECTING;
while (h->state != GG_STATE_ERROR && h->state != GG_STATE_PARSING) {
if (gg_http_watch_fd(h) == -1)
break;
}
if (h->state != GG_STATE_PARSING) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() some strange error\n");
gg_http_free(h);
return NULL;
}
}
h->callback = gg_http_watch_fd;
h->destroy = gg_http_free;
return h;
}
/**
* Funkcja wywoływana po zaobserwowaniu zmian na deskryptorze połączenia.
*
* Operacja będzie zakończona, gdy pole \c state będzie równe
* \c GG_STATE_PARSING. W tym miejscu działanie przejmuje zwykle funkcja
* korzystająca z \c gg_http_watch_fd(). W przypadku błędu połączenia,
* pole \c state będzie równe \c GG_STATE_ERROR, a kod błędu znajdzie się
* w polu \c error.
*
* \param h Struktura połączenia
*
* \return \return 0 jeśli się powiodło, -1 w przypadku błędu
*
* \ingroup http
*/
int gg_http_watch_fd(struct gg_http *h)
{
gg_debug(GG_DEBUG_FUNCTION, "** gg_http_watch_fd(%p);\n", h);
if (!h) {
gg_debug(GG_DEBUG_MISC, "// gg_http_watch_fd() invalid arguments\n");
errno = EFAULT;
return -1;
}
if (h->state == GG_STATE_RESOLVING) {
struct in_addr a;
gg_debug(GG_DEBUG_MISC, "=> http, resolving done\n");
if (gg_sock_read(h->fd, &a, sizeof(a)) < (signed)sizeof(a) || a.s_addr == INADDR_NONE) {
gg_debug(GG_DEBUG_MISC, "=> http, resolver thread failed\n");
gg_http_error(GG_ERROR_RESOLVING);
}
gg_sock_close(h->fd);
h->fd = -1;
h->resolver_cleanup(&h->resolver, 0);
gg_debug(GG_DEBUG_MISC, "=> http, connecting to %s:%d\n", inet_ntoa(a), h->port);
if ((h->fd = gg_connect(&a, h->port, h->async)) == -1) {
gg_debug(GG_DEBUG_MISC, "=> http, connection failed (errno=%d, %s)\n", errno, strerror(errno));
gg_http_error(GG_ERROR_CONNECTING);
}
h->state = GG_STATE_CONNECTING;
h->check = GG_CHECK_WRITE;
h->timeout = GG_DEFAULT_TIMEOUT;
return 0;
}
if (h->state == GG_STATE_CONNECTING) {
int res = 0;
unsigned int res_size = sizeof(res);
if (h->async && (gg_getsockopt(h->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) || res)) {
gg_debug(GG_DEBUG_MISC, "=> http, async connection failed (errno=%d, %s)\n", (res) ? res : errno , strerror((res) ? res : errno));
gg_sock_close(h->fd);
h->fd = -1;
h->state = GG_STATE_ERROR;
h->error = GG_ERROR_CONNECTING;
if (res)
errno = res;
return 0;
}
gg_debug(GG_DEBUG_MISC, "=> http, connected, sending request\n");
h->state = GG_STATE_SENDING_QUERY;
}
if (h->state == GG_STATE_SENDING_QUERY) {
int res;
if ((res = gg_sock_write(h->fd, h->query, strlen(h->query))) < 1) {
gg_debug(GG_DEBUG_MISC, "=> http, write() failed (len=%d, res=%d, errno=%d)\n", strlen(h->query), res, errno);
gg_http_error(GG_ERROR_WRITING);
}
if (res < (int)strlen(h->query)) {
gg_debug(GG_DEBUG_MISC, "=> http, partial header sent (led=%d, sent=%d)\n", strlen(h->query), res);
memmove(h->query, h->query + res, strlen(h->query) - res + 1);
h->state = GG_STATE_SENDING_QUERY;
h->check = GG_CHECK_WRITE;
h->timeout = GG_DEFAULT_TIMEOUT;
} else {
gg_debug(GG_DEBUG_MISC, "=> http, request sent (len=%d)\n", strlen(h->query));
free(h->query);
h->query = NULL;
h->state = GG_STATE_READING_HEADER;
h->check = GG_CHECK_READ;
h->timeout = GG_DEFAULT_TIMEOUT;
}
return 0;
}
if (h->state == GG_STATE_READING_HEADER) {
char buf[1024], *tmp;
int res;
if ((res = gg_sock_read(h->fd, buf, sizeof(buf))) == -1) {
gg_debug(GG_DEBUG_MISC, "=> http, reading header failed (errno=%d)\n", errno);
if (h->header) {
free(h->header);
h->header = NULL;
}
gg_http_error(GG_ERROR_READING);
}
if (!res) {
gg_debug(GG_DEBUG_MISC, "=> http, connection reset by peer\n");
if (h->header) {
free(h->header);
h->header = NULL;
}
gg_http_error(GG_ERROR_READING);
}
gg_debug(GG_DEBUG_MISC, "=> http, read %d bytes of header\n", res);
if (!(tmp = realloc(h->header, h->header_size + res + 1))) {
gg_debug(GG_DEBUG_MISC, "=> http, not enough memory for header\n");
free(h->header);
h->header = NULL;
gg_http_error(GG_ERROR_READING);
}
h->header = tmp;
memcpy(h->header + h->header_size, buf, res);
h->header_size += res;
gg_debug(GG_DEBUG_MISC, "=> http, header_buf=%p, header_size=%d\n", h->header, h->header_size);
h->header[h->header_size] = 0;
if ((tmp = strstr(h->header, "\r\n\r\n")) || (tmp = strstr(h->header, "\n\n"))) {
int sep_len = (*tmp == '\r') ? 4 : 2;
unsigned int left;
char *line;
left = h->header_size - ((long)(tmp) - (long)(h->header) + sep_len);
gg_debug(GG_DEBUG_MISC, "=> http, got all header (%d bytes, %d left)\n", h->header_size - left, left);
/* HTTP/1.1 200 OK */
if (strlen(h->header) < 16 || strncmp(h->header + 9, "200", 3)) {
gg_debug(GG_DEBUG_MISC, "=> -----BEGIN-HTTP-HEADER-----\n%s\n=> -----END-HTTP-HEADER-----\n", h->header);
gg_debug(GG_DEBUG_MISC, "=> http, didn't get 200 OK -- no results\n");
free(h->header);
h->header = NULL;
gg_http_error(GG_ERROR_CONNECTING);
}
h->body_size = 0;
line = h->header;
*tmp = 0;
gg_debug(GG_DEBUG_MISC, "=> -----BEGIN-HTTP-HEADER-----\n%s\n=> -----END-HTTP-HEADER-----\n", h->header);
while (line) {
if (!strncasecmp(line, "Content-length: ", 16)) {
h->body_size = atoi(line + 16);
}
line = strchr(line, '\n');
if (line)
line++;
}
if (h->body_size <= 0) {
gg_debug(GG_DEBUG_MISC, "=> http, content-length not found\n");
h->body_size = left;
}
if (left > h->body_size) {
gg_debug(GG_DEBUG_MISC, "=> http, oversized reply (%d bytes needed, %d bytes left)\n", h->body_size, left);
h->body_size = left;
}
gg_debug(GG_DEBUG_MISC, "=> http, body_size=%d\n", h->body_size);
if (!(h->body = malloc(h->body_size + 1))) {
gg_debug(GG_DEBUG_MISC, "=> http, not enough memory (%d bytes for body_buf)\n", h->body_size + 1);
free(h->header);
h->header = NULL;
gg_http_error(GG_ERROR_READING);
}
if (left) {
memcpy(h->body, tmp + sep_len, left);
h->body_done = left;
}
h->body[left] = 0;
h->state = GG_STATE_READING_DATA;
h->check = GG_CHECK_READ;
h->timeout = GG_DEFAULT_TIMEOUT;
}
return 0;
}
if (h->state == GG_STATE_READING_DATA) {
char buf[1024];
int res;
if ((res = gg_sock_read(h->fd, buf, sizeof(buf))) == -1) {
gg_debug(GG_DEBUG_MISC, "=> http, reading body failed (errno=%d)\n", errno);
if (h->body) {
free(h->body);
h->body = NULL;
}
gg_http_error(GG_ERROR_READING);
}
if (!res) {
if (h->body_done >= h->body_size) {
gg_debug(GG_DEBUG_MISC, "=> http, we're done, closing socket\n");
h->state = GG_STATE_PARSING;
gg_sock_close(h->fd);
h->fd = -1;
} else {
gg_debug(GG_DEBUG_MISC, "=> http, connection closed while reading (have %d, need %d)\n", h->body_done, h->body_size);
if (h->body) {
free(h->body);
h->body = NULL;
}
gg_http_error(GG_ERROR_READING);
}
return 0;
}
gg_debug(GG_DEBUG_MISC, "=> http, read %d bytes of body\n", res);
if (h->body_done + res > h->body_size) {
char *tmp;
gg_debug(GG_DEBUG_MISC, "=> http, too much data (%d bytes, %d needed), enlarging buffer\n", h->body_done + res, h->body_size);
if (!(tmp = realloc(h->body, h->body_done + res + 1))) {
gg_debug(GG_DEBUG_MISC, "=> http, not enough memory for data (%d needed)\n", h->body_done + res + 1);
free(h->body);
h->body = NULL;
gg_http_error(GG_ERROR_READING);
}
h->body = tmp;
h->body_size = h->body_done + res;
}
h->body[h->body_done + res] = 0;
memcpy(h->body + h->body_done, buf, res);
h->body_done += res;
gg_debug(GG_DEBUG_MISC, "=> body_done=%d, body_size=%d\n", h->body_done, h->body_size);
return 0;
}
if (h->fd != -1)
gg_sock_close(h->fd);
h->fd = -1;
h->state = GG_STATE_ERROR;
h->error = 0;
return -1;
}
/*
* 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;
}
/**
* Funkcja wywoływana po zaobserwowaniu zmian na deskryptorze połączenia.
*
* Funkcja zwraca strukturę zdarzenia \c gg_event. Jeśli rodzaj zdarzenia
* to \c GG_EVENT_NONE, nie wydarzyło się jeszcze nic wartego odnotowania.
* Strukturę zdarzenia należy zwolnić funkcja \c gg_event_free().
*
* \param dcc Struktura połączenia
*
* \return Struktura zdarzenia lub \c NULL jeśli wystąpił błąd
*
* \ingroup dcc7
*/
struct gg_event *gg_dcc7_watch_fd(struct gg_dcc7 *dcc)
{
struct gg_event *e;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_FUNCTION, "** gg_dcc7_watch_fd(%p)\n", dcc);
if (!dcc || (dcc->type != GG_SESSION_DCC7_SEND && dcc->type != GG_SESSION_DCC7_GET && dcc->type != GG_SESSION_DCC7_VOICE)) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() invalid parameters\n");
errno = EINVAL;
return NULL;
}
if (!(e = malloc(sizeof(struct gg_event)))) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() not enough memory\n");
return NULL;
}
memset(e, 0, sizeof(struct gg_event));
e->type = GG_EVENT_NONE;
switch (dcc->state) {
case GG_STATE_LISTENING:
{
struct sockaddr_in sin;
SOCKET fd;
int one = 1;
unsigned int sin_len = sizeof(sin);
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_LISTENING\n");
if ((fd = accept(dcc->fd, (struct sockaddr*) &sin, &sin_len)) == -1) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() accept() failed (%s)\n", strerror(errno));
return e;
}
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() connection from %s:%d\n", inet_ntoa(sin.sin_addr), htons(sin.sin_port));
#ifdef FIONBIO
if (ioctl(fd, FIONBIO, &one) == -1) {
#else
if (fcntl(fd, F_SETFL, O_NONBLOCK) == -1) {
#endif
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() can't set nonblocking (%s)\n", strerror(errno));
gg_sock_close(fd);
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
gg_sock_close(dcc->fd);
dcc->fd = fd;
dcc->state = GG_STATE_READING_ID;
dcc->check = GG_CHECK_READ;
dcc->timeout = GG_DEFAULT_TIMEOUT;
dcc->incoming = 1;
dcc->remote_port = ntohs(sin.sin_port);
dcc->remote_addr = sin.sin_addr.s_addr;
e->type = GG_EVENT_DCC7_CONNECTED;
e->event.dcc7_connected.dcc7 = dcc;
return e;
}
case GG_STATE_CONNECTING:
{
int res = 0, error = 0;
unsigned int error_size = sizeof(error);
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_CONNECTING\n");
dcc->soft_timeout = 0;
if (dcc->timeout == 0)
error = ETIMEDOUT;
if (error || (res = gg_getsockopt(dcc->fd, SOL_SOCKET, SO_ERROR, &error, &error_size)) == -1 || error != 0) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() connection failed (%s)\n", (res == -1) ? strerror(errno) : strerror(error));
if (dcc->relay) {
for (dcc->relay_index++; dcc->relay_index < dcc->relay_count; dcc->relay_index++) {
dcc->remote_addr = dcc->relay_list[dcc->relay_index].addr;
dcc->remote_port = dcc->relay_list[dcc->relay_index].port;
if (gg_dcc7_connect(dcc) == 0)
break;
}
if (dcc->relay_index >= dcc->relay_count) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() no relay available");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
} else {
if (gg_dcc7_reverse_connect(dcc) != -1) {
e->type = GG_EVENT_DCC7_PENDING;
e->event.dcc7_pending.dcc7 = dcc;
} else {
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_NET;
e->event.dcc7_error_ex.dcc7 = dcc;
}
return e;
}
}
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() connected, sending id\n");
dcc->state = GG_STATE_SENDING_ID;
dcc->check = GG_CHECK_WRITE;
dcc->timeout = GG_DEFAULT_TIMEOUT;
dcc->incoming = 0;
return e;
}
case GG_STATE_READING_ID:
{
int res;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_READING_ID\n");
if (!dcc->relay) {
struct gg_dcc7_welcome_p2p welcome, welcome_ok;
welcome_ok.id = dcc->cid;
if ((res = gg_sock_read(dcc->fd, &welcome, sizeof(welcome))) != sizeof(welcome)) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() read() failed (%d, %s)\n", res, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
if (memcmp(&welcome, &welcome_ok, sizeof(welcome))) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() invalid id\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
} else {
struct gg_dcc7_welcome_server welcome, welcome_ok;
welcome_ok.magic = GG_DCC7_WELCOME_SERVER;
welcome_ok.id = dcc->cid;
if ((res = gg_sock_read(dcc->fd, &welcome, sizeof(welcome))) != sizeof(welcome)) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() read() failed (%d, %s)\n", res, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
if (memcmp(&welcome, &welcome_ok, sizeof(welcome)) != 0) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() invalid id\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
}
if (dcc->incoming) {
dcc->state = GG_STATE_SENDING_ID;
dcc->check = GG_CHECK_WRITE;
dcc->timeout = GG_DEFAULT_TIMEOUT;
} else {
gg_dcc7_postauth_fixup(dcc);
dcc->timeout = GG_DEFAULT_TIMEOUT;
}
return e;
}
case GG_STATE_SENDING_ID:
{
int res;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_SENDING_ID\n");
if (!dcc->relay) {
struct gg_dcc7_welcome_p2p welcome;
welcome.id = dcc->cid;
if ((res = gg_sock_write(dcc->fd, &welcome, sizeof(welcome))) != sizeof(welcome)) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() write() failed (%d, %s)", res, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
} else {
struct gg_dcc7_welcome_server welcome;
welcome.magic = gg_fix32(GG_DCC7_WELCOME_SERVER);
welcome.id = dcc->cid;
if ((res = gg_sock_write(dcc->fd, &welcome, sizeof(welcome))) != sizeof(welcome)) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() write() failed (%d, %s)\n", res, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
}
if (dcc->incoming) {
gg_dcc7_postauth_fixup(dcc);
dcc->timeout = GG_DEFAULT_TIMEOUT;
} else {
dcc->state = GG_STATE_READING_ID;
dcc->check = GG_CHECK_READ;
dcc->timeout = GG_DEFAULT_TIMEOUT;
}
return e;
}
case GG_STATE_SENDING_FILE:
{
char buf[1024];
int chunk, res;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_SENDING_FILE (offset=%d, size=%d)\n", dcc->offset, dcc->size);
if (dcc->offset >= dcc->size) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() offset >= size, finished\n");
e->type = GG_EVENT_DCC7_DONE;
e->event.dcc7_done.dcc7 = dcc;
return e;
}
if (dcc->seek && lseek(dcc->file_fd, dcc->offset, SEEK_SET) == (off_t) -1) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() lseek() failed (%s)\n", strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_FILE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
if ((chunk = dcc->size - dcc->offset) > sizeof(buf))
chunk = sizeof(buf);
if ((res = read(dcc->file_fd, buf, chunk)) < 1) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() read() failed (res=%d, %s)\n", res, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = (res == -1) ? GG_ERROR_DCC7_FILE : GG_ERROR_DCC7_EOF;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
if ((res = gg_sock_write(dcc->fd, buf, res)) == -1) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() write() failed (%s)\n", strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_NET;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
dcc->offset += res;
if (dcc->offset >= dcc->size) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() finished\n");
e->type = GG_EVENT_DCC7_DONE;
e->event.dcc7_done.dcc7 = dcc;
return e;
}
dcc->state = GG_STATE_SENDING_FILE;
dcc->check = GG_CHECK_WRITE;
dcc->timeout = GG_DCC7_TIMEOUT_SEND;
return e;
}
case GG_STATE_GETTING_FILE:
{
char buf[1024];
int res, wres;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_GETTING_FILE (offset=%d, size=%d)\n", dcc->offset, dcc->size);
if (dcc->offset >= dcc->size) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() finished\n");
e->type = GG_EVENT_DCC7_DONE;
e->event.dcc7_done.dcc7 = dcc;
return e;
}
if ((res = gg_sock_read(dcc->fd, buf, sizeof(buf))) < 1) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() read() failed (fd=%d, res=%d, %s)\n", dcc->fd, res, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = (res == -1) ? GG_ERROR_DCC7_NET : GG_ERROR_DCC7_EOF;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
// XXX zapisywać do skutku?
if ((wres = write(dcc->file_fd, buf, res)) < res) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() write() failed (fd=%d, res=%d, %s)\n", dcc->file_fd, wres, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_FILE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
dcc->offset += res;
if (dcc->offset >= dcc->size) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() finished\n");
e->type = GG_EVENT_DCC7_DONE;
e->event.dcc7_done.dcc7 = dcc;
return e;
}
dcc->state = GG_STATE_GETTING_FILE;
dcc->check = GG_CHECK_READ;
dcc->timeout = GG_DCC7_TIMEOUT_GET;
return e;
}
case GG_STATE_RESOLVING_RELAY:
{
struct in_addr addr;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_RESOLVING_RELAY\n");
if (gg_sock_read(dcc->fd, &addr, sizeof(addr)) < sizeof(addr) || addr.s_addr == INADDR_NONE) {
int errno_save = errno;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() resolving failed\n");
gg_sock_close(dcc->fd);
dcc->fd = -1;
dcc->sess->resolver_cleanup(&dcc->resolver, 0);
errno = errno_save;
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() resolved, connecting to %s:%d\n", inet_ntoa(addr), GG_RELAY_PORT);
if ((dcc->fd = gg_connect(&addr, GG_RELAY_PORT, 1)) == -1) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() connection failed (errno=%d, %s), critical\n", errno, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
dcc->state = GG_STATE_CONNECTING_RELAY;
dcc->check = GG_CHECK_WRITE;
dcc->timeout = GG_DEFAULT_TIMEOUT;
return e;
}
case GG_STATE_CONNECTING_RELAY:
{
int res;
unsigned int res_size = sizeof(res);
struct gg_dcc7_relay_req pkt;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_CONNECTING_RELAY\n");
if (gg_getsockopt(dcc->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) != 0 || res != 0) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() connection failed (errno=%d, %s)\n", res, strerror(res));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
memset(&pkt, 0, sizeof(pkt));
pkt.magic = gg_fix32(GG_DCC7_RELAY_REQUEST);
pkt.len = gg_fix32(sizeof(pkt));
pkt.id = dcc->cid;
pkt.type = gg_fix16(GG_DCC7_RELAY_TYPE_SERVER);
pkt.dunno1 = gg_fix16(GG_DCC7_RELAY_DUNNO1);
gg_debug_dump_session((dcc) ? (dcc)->sess : NULL, &pkt, sizeof(pkt), "// gg_dcc7_watch_fd() send pkt(0x%.2x)\n", gg_fix32(pkt.magic));
if ((res = gg_sock_write(dcc->fd, &pkt, sizeof(pkt))) != sizeof(pkt)) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() sending failed\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
dcc->state = GG_STATE_READING_RELAY;
dcc->check = GG_CHECK_READ;
dcc->timeout = GG_DEFAULT_TIMEOUT;
return e;
}
case GG_STATE_READING_RELAY:
{
char buf[256];
struct gg_dcc7_relay_reply *pkt;
struct gg_dcc7_relay_reply_server srv;
int res;
int i;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_READING_RELAY\n");
if ((res = gg_sock_read(dcc->fd, buf, sizeof(buf))) < sizeof(*pkt)) {
if (res == 0)
errno = ECONNRESET;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() read() failed (%d, %s)\n", res, strerror(errno));
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
pkt = (struct gg_dcc7_relay_reply*) buf;
if (gg_fix32(pkt->magic) != GG_DCC7_RELAY_REPLY || gg_fix32(pkt->rcount) < 1 || gg_fix32(pkt->rcount > 256) || gg_fix32(pkt->len) < sizeof(*pkt) + gg_fix32(pkt->rcount) * sizeof(srv)) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_wathc_fd() invalid reply\n");
errno = EINVAL;
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
gg_debug_dump_session((dcc) ? (dcc)->sess : NULL, buf, res, "// gg_dcc7_get_relay() read pkt(0x%.2x)\n", gg_fix32(pkt->magic));
free(dcc->relay_list);
dcc->relay_index = 0;
dcc->relay_count = gg_fix32(pkt->rcount);
dcc->relay_list = malloc(dcc->relay_count * sizeof(gg_dcc7_relay_t));
if (dcc->relay_list == NULL) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() not enough memory");
dcc->relay_count = 0;
free(e);
return NULL;
}
for (i = 0; i < dcc->relay_count; i++) {
struct in_addr addr;
memcpy(&srv, buf + sizeof(*pkt) + i * sizeof(srv), sizeof(srv));
dcc->relay_list[i].addr = srv.addr;
dcc->relay_list[i].port = gg_fix16(srv.port);
dcc->relay_list[i].family = srv.family;
addr.s_addr = srv.addr;
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// %s %d %d\n", inet_ntoa(addr), gg_fix16(srv.port), srv.family);
}
dcc->relay = 1;
for (; dcc->relay_index < dcc->relay_count; dcc->relay_index++) {
dcc->remote_addr = dcc->relay_list[dcc->relay_index].addr;
dcc->remote_port = dcc->relay_list[dcc->relay_index].port;
if (gg_dcc7_connect(dcc) == 0)
break;
}
if (dcc->relay_index >= dcc->relay_count) {
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() no relay available");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_RELAY;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
return e;
}
default:
{
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_???\n");
e->type = GG_EVENT_DCC7_ERROR;
e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
e->event.dcc7_error_ex.dcc7 = dcc;
return e;
}
}
return e;
}
/**
* Zwalnia zasoby używane przez połączenie bezpośrednie.
*
* \param dcc Struktura połączenia
*
* \ingroup dcc7
*/
void gg_dcc7_free(struct gg_dcc7 *dcc)
{
gg_debug_session((dcc) ? (dcc)->sess : NULL, GG_DEBUG_FUNCTION, "** gg_dcc7_free(%p)\n", dcc);
if (!dcc)
return;
if (dcc->fd != -1)
gg_sock_close(dcc->fd);
if (dcc->file_fd != -1)
close(dcc->file_fd);
if (dcc->sess)
gg_dcc7_session_remove(dcc->sess, dcc);
free(dcc->relay_list);
free(dcc);
}
/*
* gg_http_connect() // funkcja pomocnicza
*
* rozpoczyna po³±czenie po http.
*
* - hostname - adres serwera
* - port - port serwera
* - async - asynchroniczne po³±czenie
* - method - metoda http (GET, POST, cokolwiek)
* - path - ¶cie¿ka do zasobu (musi byæ poprzedzona ,,/'')
* - header - nag³ówek zapytania plus ewentualne dane dla POST
*
* zaalokowana struct gg_http, któr± po¼niej nale¿y
* zwolniæ funkcj± gg_http_free(), albo NULL je¶li wyst±pi³ b³±d.
*/
struct gg_http *gg_http_connect(const char *hostname, int port, int async, const char *method, const char *path, const char *header)
{
struct gg_http *h;
if (!hostname || !port || !method || !path || !header) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() invalid arguments\n");
errno = EFAULT;
return NULL;
}
if (!(h = malloc(sizeof(*h))))
return NULL;
memset(h, 0, sizeof(*h));
h->async = async;
h->port = port;
h->fd = -1;
h->type = GG_SESSION_HTTP;
if (gg_proxy_enabled) {
char *auth = gg_proxy_auth();
h->query = gg_saprintf("%s http://%s:%d%s HTTP/1.0\r\n%s%s",
method, hostname, port, path, (auth) ? auth :
"", header);
hostname = gg_proxy_host;
h->port = port = gg_proxy_port;
if (auth)
free(auth);
} else {
h->query = gg_saprintf("%s %s HTTP/1.0\r\n%s",
method, path, header);
}
if (!h->query) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() not enough memory for query\n");
free(h);
errno = ENOMEM;
return NULL;
}
gg_debug(GG_DEBUG_MISC, "=> -----BEGIN-HTTP-QUERY-----\n%s\n=> -----END-HTTP-QUERY-----\n", h->query);
if (async) {
#ifndef __GG_LIBGADU_HAVE_PTHREAD
if (gg_resolve(&h->fd, &h->pid, hostname)) {
#else
if (gg_resolve_pthread(&h->fd, &h->resolver, hostname)) {
#endif
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() resolver failed\n");
gg_http_free(h);
errno = ENOENT;
return NULL;
}
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() resolver = %p\n", h->resolver);
h->state = GG_STATE_RESOLVING;
h->check = GG_CHECK_READ;
h->timeout = GG_DEFAULT_TIMEOUT;
} else {
struct in_addr *hn, a;
if (!(hn = gg_gethostbyname(hostname))) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() host not found\n");
gg_http_free(h);
errno = ENOENT;
return NULL;
} else {
a.s_addr = hn->s_addr;
free(hn);
}
if (!(h->fd = gg_connect(&a, port, 0)) == -1) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() connection failed (errno=%d, %s)\n", errno, strerror(errno));
gg_http_free(h);
return NULL;
}
h->state = GG_STATE_CONNECTING;
while (h->state != GG_STATE_ERROR && h->state != GG_STATE_PARSING) {
if (gg_http_watch_fd(h) == -1)
break;
}
if (h->state != GG_STATE_PARSING) {
gg_debug(GG_DEBUG_MISC, "// gg_http_connect() some strange error\n");
gg_http_free(h);
return NULL;
}
}
h->callback = gg_http_watch_fd;
h->destroy = gg_http_free;
return h;
}
#define gg_http_error(x) \
close(h->fd); \
h->fd = -1; \
h->state = GG_STATE_ERROR; \
h->error = x; \
return 0;
/*
* gg_http_watch_fd()
*
* przy asynchronicznej obs³udze HTTP funkcjê t± nale¿y wywo³aæ, je¶li
* zmieni³o siê co¶ na obserwowanym deskryptorze.
*
* - h - struktura opisuj±ca po³±czenie
*
* je¶li wszystko posz³o dobrze to 0, inaczej -1. po³±czenie bêdzie
* zakoñczone, je¶li h->state == GG_STATE_PARSING. je¶li wyst±pi jaki¶
* b³±d, to bêdzie tam GG_STATE_ERROR i odpowiedni kod b³êdu w h->error.
*/
int gg_http_watch_fd(struct gg_http *h)
{
gg_debug(GG_DEBUG_FUNCTION, "** gg_http_watch_fd(%p);\n", h);
if (!h) {
gg_debug(GG_DEBUG_MISC, "// gg_http_watch_fd() invalid arguments\n");
errno = EFAULT;
return -1;
}
if (h->state == GG_STATE_RESOLVING) {
struct in_addr a;
gg_debug(GG_DEBUG_MISC, "=> http, resolving done\n");
if (read(h->fd, &a, sizeof(a)) < (signed)sizeof(a) || a.s_addr == INADDR_NONE) {
gg_debug(GG_DEBUG_MISC, "=> http, resolver thread failed\n");
gg_http_error(GG_ERROR_RESOLVING);
}
close(h->fd);
h->fd = -1;
#ifndef __GG_LIBGADU_HAVE_PTHREAD
waitpid(h->pid, NULL, 0);
#else
if (h->resolver) {
gg_resolve_pthread_cleanup(h->resolver, 0);
h->resolver = NULL;
}
#endif
gg_debug(GG_DEBUG_MISC, "=> http, connecting to %s:%d\n", inet_ntoa(a), h->port);
if ((h->fd = gg_connect(&a, h->port, h->async)) == -1) {
gg_debug(GG_DEBUG_MISC, "=> http, connection failed (errno=%d, %s)\n", errno, strerror(errno));
gg_http_error(GG_ERROR_CONNECTING);
}
h->state = GG_STATE_CONNECTING;
h->check = GG_CHECK_WRITE;
h->timeout = GG_DEFAULT_TIMEOUT;
return 0;
}
if (h->state == GG_STATE_CONNECTING) {
int res = 0;
unsigned int res_size = sizeof(res);
if (h->async && (getsockopt(h->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) || res)) {
gg_debug(GG_DEBUG_MISC, "=> http, async connection failed (errno=%d, %s)\n", (res) ? res : errno , strerror((res) ? res : errno));
close(h->fd);
h->fd = -1;
h->state = GG_STATE_ERROR;
h->error = GG_ERROR_CONNECTING;
if (res)
errno = res;
return 0;
}
gg_debug(GG_DEBUG_MISC, "=> http, connected, sending request\n");
h->state = GG_STATE_SENDING_QUERY;
}
if (h->state == GG_STATE_SENDING_QUERY) {
int res;
if ((res = write(h->fd, h->query, strlen(h->query))) < 1) {
gg_debug(GG_DEBUG_MISC, "=> http, write() failed (len=%d, res=%d, errno=%d)\n", strlen(h->query), res, errno);
gg_http_error(GG_ERROR_WRITING);
}
if (res < strlen(h->query)) {
gg_debug(GG_DEBUG_MISC, "=> http, partial header sent (led=%d, sent=%d)\n", strlen(h->query), res);
memmove(h->query, h->query + res, strlen(h->query) - res + 1);
h->state = GG_STATE_SENDING_QUERY;
h->check = GG_CHECK_WRITE;
h->timeout = GG_DEFAULT_TIMEOUT;
} else {
gg_debug(GG_DEBUG_MISC, "=> http, request sent (len=%d)\n", strlen(h->query));
free(h->query);
h->query = NULL;
h->state = GG_STATE_READING_HEADER;
h->check = GG_CHECK_READ;
h->timeout = GG_DEFAULT_TIMEOUT;
}
return 0;
}
if (h->state == GG_STATE_READING_HEADER) {
char buf[1024], *tmp;
int res;
if ((res = read(h->fd, buf, sizeof(buf))) == -1) {
gg_debug(GG_DEBUG_MISC, "=> http, reading header failed (errno=%d)\n", errno);
if (h->header) {
free(h->header);
h->header = NULL;
}
gg_http_error(GG_ERROR_READING);
}
if (!res) {
gg_debug(GG_DEBUG_MISC, "=> http, connection reset by peer\n");
if (h->header) {
free(h->header);
h->header = NULL;
}
gg_http_error(GG_ERROR_READING);
}
gg_debug(GG_DEBUG_MISC, "=> http, read %d bytes of header\n", res);
if (!(tmp = realloc(h->header, h->header_size + res + 1))) {
gg_debug(GG_DEBUG_MISC, "=> http, not enough memory for header\n");
free(h->header);
h->header = NULL;
gg_http_error(GG_ERROR_READING);
}
h->header = tmp;
memcpy(h->header + h->header_size, buf, res);
h->header_size += res;
gg_debug(GG_DEBUG_MISC, "=> http, header_buf=%p, header_size=%d\n", h->header, h->header_size);
h->header[h->header_size] = 0;
if ((tmp = strstr(h->header, "\r\n\r\n")) || (tmp = strstr(h->header, "\n\n"))) {
int sep_len = (*tmp == '\r') ? 4 : 2;
unsigned int left;
char *line;
left = h->header_size - ((long)(tmp) - (long)(h->header) + sep_len);
gg_debug(GG_DEBUG_MISC, "=> http, got all header (%d bytes, %d left)\n", h->header_size - left, left);
/* HTTP/1.1 200 OK */
if (strlen(h->header) < 16 || strncmp(h->header + 9, "200", 3)) {
gg_debug(GG_DEBUG_MISC, "=> -----BEGIN-HTTP-HEADER-----\n%s\n=> -----END-HTTP-HEADER-----\n", h->header);
gg_debug(GG_DEBUG_MISC, "=> http, didn't get 200 OK -- no results\n");
free(h->header);
h->header = NULL;
gg_http_error(GG_ERROR_CONNECTING);
}
h->body_size = 0;
line = h->header;
*tmp = 0;
gg_debug(GG_DEBUG_MISC, "=> -----BEGIN-HTTP-HEADER-----\n%s\n=> -----END-HTTP-HEADER-----\n", h->header);
while (line) {
if (!strncasecmp(line, "Content-length: ", 16)) {
h->body_size = atoi(line + 16);
}
line = strchr(line, '\n');
if (line)
line++;
}
if (h->body_size <= 0) {
gg_debug(GG_DEBUG_MISC, "=> http, content-length not found\n");
h->body_size = left;
}
if (left > h->body_size) {
gg_debug(GG_DEBUG_MISC, "=> http, oversized reply (%d bytes needed, %d bytes left)\n", h->body_size, left);
h->body_size = left;
}
gg_debug(GG_DEBUG_MISC, "=> http, body_size=%d\n", h->body_size);
if (!(h->body = malloc(h->body_size + 1))) {
gg_debug(GG_DEBUG_MISC, "=> http, not enough memory (%d bytes for body_buf)\n", h->body_size + 1);
free(h->header);
h->header = NULL;
gg_http_error(GG_ERROR_READING);
}
if (left) {
memcpy(h->body, tmp + sep_len, left);
h->body_done = left;
}
h->body[left] = 0;
h->state = GG_STATE_READING_DATA;
h->check = GG_CHECK_READ;
h->timeout = GG_DEFAULT_TIMEOUT;
}
return 0;
}
if (h->state == GG_STATE_READING_DATA) {
char buf[1024];
int res;
if ((res = read(h->fd, buf, sizeof(buf))) == -1) {
gg_debug(GG_DEBUG_MISC, "=> http, reading body failed (errno=%d)\n", errno);
if (h->body) {
free(h->body);
h->body = NULL;
}
gg_http_error(GG_ERROR_READING);
}
if (!res) {
if (h->body_done >= h->body_size) {
gg_debug(GG_DEBUG_MISC, "=> http, we're done, closing socket\n");
h->state = GG_STATE_PARSING;
close(h->fd);
h->fd = -1;
} else {
gg_debug(GG_DEBUG_MISC, "=> http, connection closed while reading (have %d, need %d)\n", h->body_done, h->body_size);
if (h->body) {
free(h->body);
h->body = NULL;
}
gg_http_error(GG_ERROR_READING);
}
return 0;
}
gg_debug(GG_DEBUG_MISC, "=> http, read %d bytes of body\n", res);
if (h->body_done + res > h->body_size) {
char *tmp;
gg_debug(GG_DEBUG_MISC, "=> http, too much data (%d bytes, %d needed), enlarging buffer\n", h->body_done + res, h->body_size);
if (!(tmp = realloc(h->body, h->body_done + res + 1))) {
gg_debug(GG_DEBUG_MISC, "=> http, not enough memory for data (%d needed)\n", h->body_done + res + 1);
free(h->body);
h->body = NULL;
gg_http_error(GG_ERROR_READING);
}
h->body = tmp;
h->body_size = h->body_done + res;
}
h->body[h->body_done + res] = 0;
memcpy(h->body + h->body_done, buf, res);
h->body_done += res;
gg_debug(GG_DEBUG_MISC, "=> body_done=%d, body_size=%d\n", h->body_done, h->body_size);
return 0;
}
if (h->fd != -1)
close(h->fd);
h->fd = -1;
h->state = GG_STATE_ERROR;
h->error = 0;
return -1;
}
