--- a/libpurple/protocols/gg/lib/dcc7.c Wed Oct 26 10:17:10 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1660 +0,0 @@
-/* $Id$ */
-
-/*
- * (C) Copyright 2001-2010 Wojtek Kaniewski <wojtekka@irc.pl>
- * Tomasz Chiliński <chilek@chilan.com>
- * Adam Wysocki <gophi@ekg.chmurka.net>
- * Bartłomiej Zimoń <uzi18@o2.pl>
- *
- * Thanks to Jakub Zawadzki <darkjames@darkjames.ath.cx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License Version
- * 2.1 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110,
- * USA.
- */
-
-/**
- * \file dcc7.c
- *
- * \brief Obsługa połączeń bezpośrednich od wersji Gadu-Gadu 7.x
- */
-
-#include "fileio.h"
-#include "network.h"
-#include "strman.h"
-
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <time.h>
-
-#include "libgadu.h"
-#include "protocol.h"
-#include "resolver.h"
-#include "internal.h"
-#include "debug.h"
-
-#ifdef _MSC_VER
-# define gg_debug_dcc(dcc, level, fmt, ...) \
- gg_debug_session(((dcc) != NULL) ? (dcc)->sess : NULL, level, fmt, __VA_ARGS__)
-#else
-# define gg_debug_dcc(dcc, level, fmt...) \
- gg_debug_session(((dcc) != NULL) ? (dcc)->sess : NULL, level, fmt)
-#endif
-
-#define gg_debug_dump_dcc(dcc, level, buf, len) \
- gg_debug_dump(((dcc) != NULL) ? (dcc)->sess : NULL, level, buf, len)
-
-/**
- * \internal Dodaje połączenie bezpośrednie do sesji.
- *
- * \param sess Struktura sesji
- * \param dcc Struktura połączenia
- *
- * \return 0 jeśli się powiodło, -1 w przypadku błędu
- */
-static int gg_dcc7_session_add(struct gg_session *sess, struct gg_dcc7 *dcc)
-{
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_session_add(%p, %p)\n", sess, dcc);
-
- if (!sess || !dcc || dcc->next) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_session_add() invalid parameters\n");
- errno = EINVAL;
- return -1;
- }
-
- dcc->next = sess->dcc7_list;
- sess->dcc7_list = dcc;
-
- return 0;
-}
-
-/**
- * \internal Usuwa połączenie bezpośrednie z sesji.
- *
- * \param sess Struktura sesji
- * \param dcc Struktura połączenia
- *
- * \return 0 jeśli się powiodło, -1 w przypadku błędu
- */
-static int gg_dcc7_session_remove(struct gg_session *sess, struct gg_dcc7 *dcc)
-{
- struct gg_dcc7 *tmp;
-
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_session_remove(%p, %p)\n", sess, dcc);
-
- if (sess == NULL || dcc == NULL) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_session_remove() invalid parameters\n");
- errno = EINVAL;
- return -1;
- }
-
- if (sess->dcc7_list == dcc) {
- sess->dcc7_list = dcc->next;
- dcc->next = NULL;
- return 0;
- }
-
- for (tmp = sess->dcc7_list; tmp != NULL; tmp = tmp->next) {
- if (tmp->next == dcc) {
- tmp->next = dcc->next;
- dcc->next = NULL;
- return 0;
- }
- }
-
- errno = ENOENT;
- return -1;
-}
-
-/**
- * \internal Zwraca strukturę połączenia o danym identyfikatorze.
- *
- * \param sess Struktura sesji
- * \param id Identyfikator połączenia
- * \param uin Numer nadawcy lub odbiorcy
- *
- * \return Struktura połączenia lub \c NULL jeśli nie znaleziono
- */
-static struct gg_dcc7 *gg_dcc7_session_find(struct gg_session *sess, gg_dcc7_id_t id, uin_t uin)
-{
- struct gg_dcc7 *tmp;
- int empty;
-
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_session_find(%p, ..., %d)\n", sess, (int) uin);
-
- empty = !memcmp(&id, "\0\0\0\0\0\0\0\0", 8);
-
- for (tmp = sess->dcc7_list; tmp; tmp = tmp->next) {
- if (empty) {
- if (tmp->peer_uin == uin && tmp->state == GG_STATE_WAITING_FOR_ACCEPT)
- return tmp;
- } else {
- if (!memcmp(&tmp->cid, &id, sizeof(id)))
- return tmp;
- }
- }
-
- return NULL;
-}
-
-/**
- * \internal Rozpoczyna proces pobierania adresu
- *
- * \param dcc Struktura połączenia
- *
- * \return 0 jeśli się powiodło, -1 w przypadku błędu
- */
-static int gg_dcc7_get_relay_addr(struct gg_dcc7 *dcc)
-{
- gg_debug_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_get_relay_addr(%p)\n", dcc);
-
- if (dcc == NULL || dcc->sess == NULL) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_get_relay_addr() invalid parameters\n");
- errno = EINVAL;
- return -1;
- }
-
- if (dcc->sess->resolver_start(&dcc->fd, &dcc->resolver, GG_RELAY_HOST) == -1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_get_relay_addr() "
- "resolving failed (errno=%d, %s)\n",
- errno, strerror(errno));
- return -1;
- }
-
- dcc->state = GG_STATE_RESOLVING_RELAY;
- dcc->check = GG_CHECK_READ;
- dcc->timeout = GG_DEFAULT_TIMEOUT;
-
- return 0;
-}
-
-/**
- * \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_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_connect(%p)\n", dcc);
-
- if (dcc == NULL) {
- gg_debug_dcc(dcc, 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_dcc(dcc, 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;
-}
-
-/**
- * \internal Tworzy gniazdo nasłuchujące dla połączenia bezpośredniego
- *
- * \param dcc Struktura połączenia
- * \param addr Preferowany adres (jeśli równy 0, nasłuchujemy na wszystkich interfejsach)
- * \param port Preferowany port (jeśli równy 0, nasłuchujemy na losowym)
- *
- * \return 0 jeśli się powiodło, -1 w przypadku błędu
- */
-static int gg_dcc7_listen(struct gg_dcc7 *dcc, uint32_t addr, uint16_t port)
-{
- struct sockaddr_in sin;
- socklen_t sin_len = sizeof(sin);
- int errsv;
- int fd;
-
- gg_debug_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_listen(%p, %d)\n", dcc, port);
-
- if (!dcc) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_listen() invalid parameters\n");
- errno = EINVAL;
- return -1;
- }
-
- if ((fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_listen() can't create socket (%s)\n", strerror(errno));
- return -1;
- }
-
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = addr;
- sin.sin_port = htons(port);
-
- if (bind(fd, (struct sockaddr*) &sin, sizeof(sin)) == -1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_listen() unable to"
- " bind to %s:%d\n", inet_ntoa(sin.sin_addr), port);
- goto fail;
- }
-
- if (port == 0 && getsockname(fd, (struct sockaddr*) &sin, &sin_len) == -1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_listen() unable to bind to port %d\n", port);
- goto fail;
- }
-
- if (listen(fd, 1)) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_listen() unable to listen (%s)\n", strerror(errno));
- goto fail;
- }
-
- dcc->fd = fd;
- dcc->local_addr = sin.sin_addr.s_addr;
- dcc->local_port = ntohs(sin.sin_port);
-
- dcc->state = GG_STATE_LISTENING;
- dcc->check = GG_CHECK_READ;
- dcc->timeout = GG_DCC7_TIMEOUT_FILE_ACK;
-
- return 0;
-
-fail:
- errsv = errno;
- close(fd);
- errno = errsv;
- return -1;
-}
-
-/**
- * \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);
-}
-
-/**
- * \internal Odwraca połączenie po nieudanym connect()
- *
- * \param dcc Struktura połączenia
- *
- * \return 0 jeśli się powiodło, -1 w przypadku błędu
- */
-static int gg_dcc7_reverse_connect(struct gg_dcc7 *dcc)
-{
- gg_debug_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_reverse_connect(%p)\n", dcc);
-
- if (dcc == NULL)
- return -1;
-
- if (dcc->reverse) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_reverse_connect() already reverse connection\n");
- return -1;
- }
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_reverse_connect() timeout, trying reverse connection\n");
- close(dcc->fd);
- dcc->fd = -1;
- dcc->reverse = 1;
-
- return gg_dcc7_listen_and_send_info(dcc);
-}
-
-/**
- * \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 Rozpoczyna wysyłanie pliku.
- *
- * Funkcja jest wykorzystywana przez \c gg_dcc7_send_file() oraz
- * \c gg_dcc_send_file_fd().
- *
- * \param sess Struktura sesji
- * \param rcpt Numer odbiorcy
- * \param fd Deskryptor pliku
- * \param size Rozmiar pliku
- * \param filename1250 Nazwa pliku w kodowaniu CP-1250
- * \param hash Skrót SHA-1 pliku
- * \param seek Flaga mówiąca, czy można używać lseek()
- *
- * \return Struktura \c gg_dcc7 lub \c NULL w przypadku błędu
- *
- * \ingroup dcc7
- */
-static struct gg_dcc7 *gg_dcc7_send_file_common(struct gg_session *sess,
- uin_t rcpt, int fd, size_t size, const char *filename1250,
- const char *hash, int seek)
-{
- struct gg_dcc7 *dcc = NULL;
-
- if (!sess || !rcpt || !filename1250 || !hash || fd == -1) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_send_file_common() invalid parameters\n");
- errno = EINVAL;
- goto fail;
- }
-
- if (!(dcc = malloc(sizeof(struct gg_dcc7)))) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_send_file_common() not enough memory\n");
- goto fail;
- }
-
- if (gg_dcc7_request_id(sess, GG_DCC7_TYPE_FILE) == -1)
- goto fail;
-
- memset(dcc, 0, sizeof(struct gg_dcc7));
- dcc->type = GG_SESSION_DCC7_SEND;
- dcc->dcc_type = GG_DCC7_TYPE_FILE;
- dcc->state = GG_STATE_REQUESTING_ID;
- dcc->timeout = GG_DEFAULT_TIMEOUT;
- dcc->sess = sess;
- dcc->fd = -1;
- dcc->uin = sess->uin;
- dcc->peer_uin = rcpt;
- dcc->file_fd = fd;
- dcc->size = size;
- dcc->seek = seek;
-
- strncpy((char*) dcc->filename, filename1250, GG_DCC7_FILENAME_LEN);
- dcc->filename[GG_DCC7_FILENAME_LEN] = 0;
-
- memcpy(dcc->hash, hash, GG_DCC7_HASH_LEN);
-
- if (gg_dcc7_session_add(sess, dcc) == -1)
- goto fail;
-
- return dcc;
-
-fail:
- free(dcc);
- return NULL;
-}
-
-/**
- * Rozpoczyna wysyłanie pliku o danej nazwie.
- *
- * \param sess Struktura sesji
- * \param rcpt Numer odbiorcy
- * \param filename Nazwa pliku w lokalnym systemie plików
- * \param filename1250 Nazwa pliku w kodowaniu CP-1250
- * \param hash Skrót SHA-1 pliku (lub \c NULL jeśli ma być wyznaczony)
- *
- * \return Struktura \c gg_dcc7 lub \c NULL w przypadku błędu
- *
- * \ingroup dcc7
- */
-struct gg_dcc7 *gg_dcc7_send_file(struct gg_session *sess, uin_t rcpt,
- const char *filename, const char *filename1250, const char *hash)
-{
- struct gg_dcc7 *dcc = NULL;
- const char *tmp;
- char hash_buf[GG_DCC7_HASH_LEN];
- struct stat st;
- int fd = -1;
-
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_send_file(%p, %d,"
- " \"%s\", %p)\n", sess, rcpt, filename, hash);
-
- if (!sess || !rcpt || !filename) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_send_file() invalid parameters\n");
- errno = EINVAL;
- goto fail;
- }
-
- if (!filename1250)
- filename1250 = filename;
-
- if ((fd = open(filename, O_RDONLY)) == -1) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_send_file() open() failed (%s)\n", strerror(errno));
- goto fail;
- }
-
- if (fstat(fd, &st) == -1) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_send_file() "
- "fstat() failed (%s)\n", strerror(errno));
- goto fail;
- }
-
- if ((st.st_mode & S_IFDIR)) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_send_file() that's a directory\n");
- errno = EINVAL;
- goto fail;
- }
-
- if (!hash) {
- if (gg_file_hash_sha1(fd, (uint8_t*) hash_buf) == -1)
- goto fail;
-
- hash = hash_buf;
- }
-
- if ((tmp = strrchr(filename1250, '/')))
- filename1250 = tmp + 1;
-
- if (!(dcc = gg_dcc7_send_file_common(sess, rcpt, fd, st.st_size, filename1250, hash, 1)))
- goto fail;
-
- return dcc;
-
-fail:
- if (fd != -1) {
- int errsv = errno;
- gg_file_close(fd);
- errno = errsv;
- }
-
- free(dcc);
- return NULL;
-}
-
-/**
- * \internal Rozpoczyna wysyłanie pliku o danym deskryptorze.
- *
- * \note Wysyłanie pliku nie będzie działać poprawnie, jeśli deskryptor
- * źródłowy jest w trybie nieblokującym i w pewnym momencie zabraknie danych.
- *
- * \param sess Struktura sesji
- * \param rcpt Numer odbiorcy
- * \param fd Deskryptor pliku
- * \param size Rozmiar pliku
- * \param filename1250 Nazwa pliku w kodowaniu CP-1250
- * \param hash Skrót SHA-1 pliku
- *
- * \return Struktura \c gg_dcc7 lub \c NULL w przypadku błędu
- *
- * \ingroup dcc7
- */
-struct gg_dcc7 *gg_dcc7_send_file_fd(struct gg_session *sess, uin_t rcpt,
- int fd, size_t size, const char *filename1250, const char *hash)
-{
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_send_file_fd(%p, "
- "%d, %d, %" GG_SIZE_FMT ", \"%s\", %p)\n",
- sess, rcpt, fd, size, filename1250, hash);
-
- return gg_dcc7_send_file_common(sess, rcpt, fd, size, filename1250, hash, 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_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_accept(%p, %d)\n", dcc, offset);
-
- if (!dcc || !dcc->sess) {
- gg_debug_dcc(dcc, 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);
-}
-
-/**
- * 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_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_reject(%p, %d)\n", dcc, reason);
-
- if (!dcc || !dcc->sess) {
- gg_debug_dcc(dcc, 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 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, const void *payload, int len)
-{
- const 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);
-
- /* Uwaga: To nie jest ciąg kończony zerem.
- * Note: This is not a null-terminated string. */
- GG_STATIC_ASSERT(
- sizeof(s.filename) == sizeof(tmp->filename) - 1,
- filename_sizes_does_not_match);
- memcpy((char*)s.filename, (char*)tmp->filename, sizeof(s.filename));
-
- 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;
-}
-
-/**
- * \internal Obsługuje pakiet akceptacji 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_accept(struct gg_session *sess, struct gg_event *e, const void *payload, int len)
-{
- const struct gg_dcc7_accept *p = payload;
- struct gg_dcc7 *dcc;
-
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_handle_accept(%p, %p, %p, %d)\n", sess, e, payload, len);
-
- if (!(dcc = gg_dcc7_session_find(sess, p->id, gg_fix32(p->uin)))) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_accept() unknown dcc session\n");
- /* XXX wysłać reject? */
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
- return 0;
- }
-
- if (dcc->state != GG_STATE_WAITING_FOR_ACCEPT) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_accept() invalid state\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
- return 0;
- }
-
- /* XXX czy dla odwrotnego połączenia powinniśmy wywołać już zdarzenie GG_DCC7_ACCEPT? */
-
- dcc->offset = gg_fix32(p->offset);
- dcc->state = GG_STATE_WAITING_FOR_INFO;
-
- return 0;
-}
-
-/**
- * \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, const void *payload, int len)
-{
- const 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;
- 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;
- return 0;
- }
-
- if (dcc->state == GG_STATE_WAITING_FOR_INFO) {
- gg_debug_session(sess, GG_DEBUG_MISC,
- "// gg_dcc7_handle_info() waiting for info "
- "so send one\n");
- gg_dcc7_listen_and_send_info(dcc);
- e->type = GG_EVENT_DCC7_PENDING;
- e->event.dcc7_pending.dcc7 = 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;
- return 0;
- }
-
-#if defined(HAVE__STRTOUI64) || defined(HAVE_STRTOULL)
- {
- uint64_t cid;
-
-# ifdef HAVE__STRTOUI64
- cid = _strtoui64(tmp + 2, NULL, 0);
-# else
- cid = strtoull(tmp + 2, NULL, 0);
-# endif
-
- 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;
- return 0;
- }
- }
-#else
- (void)tmp;
-#endif
-
- if (gg_dcc7_get_relay_addr(dcc) == -1) {
- gg_debug_dcc(dcc, 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;
- return 0;
- }
-
- /* XXX wysyłać dopiero jeśli uda się połączyć z serwerem? */
-
- gg_send_packet(dcc->sess, GG_DCC7_INFO, payload, len, NULL);
-
- return 0;
-
- 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;
- return 0;
- }
-
-#if 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;
- return 0;
- }
-#endif
-
- if (dcc->state == GG_STATE_LISTENING) {
- 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 (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;
- return 0;
- }
- }
-
- return 0;
-}
-
-/**
- * \internal Obsługuje pakiet odrzucenia 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_reject(struct gg_session *sess, struct gg_event *e, const void *payload, int len)
-{
- const struct gg_dcc7_reject *p = payload;
- struct gg_dcc7 *dcc;
-
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_handle_reject(%p, %p, %p, %d)\n", sess, e, payload, len);
-
- if (!(dcc = gg_dcc7_session_find(sess, p->id, gg_fix32(p->uin)))) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_reject() unknown dcc session\n");
- return 0;
- }
-
- if (dcc->state != GG_STATE_WAITING_FOR_ACCEPT) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_reject() invalid state\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc7_error = GG_ERROR_DCC7_HANDSHAKE;
- return 0;
- }
-
- e->type = GG_EVENT_DCC7_REJECT;
- e->event.dcc7_reject.dcc7 = dcc;
- e->event.dcc7_reject.reason = gg_fix32(p->reason);
-
- /* XXX ustawić state na rejected? */
-
- return 0;
-}
-
-/**
- * \internal Obsługuje pakiet nowego 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_new(struct gg_session *sess, struct gg_event *e, const void *payload, int len)
-{
- const struct gg_dcc7_new *p = payload;
- struct gg_dcc7 *dcc;
-
- gg_debug_session(sess, GG_DEBUG_FUNCTION, "** gg_dcc7_handle_new(%p, %p, %p, %d)\n", sess, e, payload, len);
-
- switch (gg_fix32(p->type)) {
- case GG_DCC7_TYPE_FILE:
- if (!(dcc = malloc(sizeof(struct gg_dcc7)))) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_new() not enough memory\n");
- return -1;
- }
-
- memset(dcc, 0, sizeof(struct gg_dcc7));
- dcc->type = GG_SESSION_DCC7_GET;
- dcc->dcc_type = GG_DCC7_TYPE_FILE;
- dcc->fd = -1;
- dcc->file_fd = -1;
- dcc->uin = sess->uin;
- dcc->peer_uin = gg_fix32(p->uin_from);
- dcc->cid = p->id;
- dcc->sess = sess;
-
- if (gg_dcc7_session_add(sess, dcc) == -1) {
- gg_debug_session(sess, GG_DEBUG_MISC,
- "// gg_dcc7_handle_new() unable to "
- "add to session\n");
- gg_dcc7_free(dcc);
- return -1;
- }
-
- dcc->size = gg_fix32(p->size);
- strncpy((char*) dcc->filename, (char*) p->filename, GG_DCC7_FILENAME_LEN);
- dcc->filename[GG_DCC7_FILENAME_LEN] = 0;
- memcpy(dcc->hash, p->hash, GG_DCC7_HASH_LEN);
-
- e->type = GG_EVENT_DCC7_NEW;
- e->event.dcc7_new = dcc;
-
- break;
-
- case GG_DCC7_TYPE_VOICE:
- if (!(dcc = malloc(sizeof(struct gg_dcc7)))) {
- gg_debug_session(sess, GG_DEBUG_MISC, "// gg_dcc7_handle_packet() not enough memory\n");
- return -1;
- }
-
- memset(dcc, 0, sizeof(struct gg_dcc7));
-
- dcc->type = GG_SESSION_DCC7_VOICE;
- dcc->dcc_type = GG_DCC7_TYPE_VOICE;
- dcc->fd = -1;
- dcc->file_fd = -1;
- dcc->uin = sess->uin;
- dcc->peer_uin = gg_fix32(p->uin_from);
- dcc->cid = p->id;
- dcc->sess = sess;
-
- if (gg_dcc7_session_add(sess, dcc) == -1) {
- gg_debug_session(sess, GG_DEBUG_MISC,
- "// gg_dcc7_handle_new() unable to add "
- "to session\n");
- gg_dcc7_free(dcc);
- return -1;
- }
-
- e->type = GG_EVENT_DCC7_NEW;
- e->event.dcc7_new = dcc;
-
- break;
-
- default:
- gg_debug_session(sess, GG_DEBUG_MISC,
- "// gg_dcc7_handle_new() unknown dcc type (%d) "
- "from %u\n", gg_fix32(p->type),
- gg_fix32(p->uin_from));
-
- break;
- }
-
- return 0;
-}
-
-/**
- * \internal Ustawia odpowiednie stany wewnętrzne w zależności od rodzaju
- * połączenia.
- *
- * \param dcc Struktura połączenia
- *
- * \return 0 jeśli się powiodło, -1 w przypadku błędu.
- */
-static int gg_dcc7_postauth_fixup(struct gg_dcc7 *dcc)
-{
- gg_debug_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_postauth_fixup(%p)\n", dcc);
-
- if (!dcc) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_postauth_fixup() invalid parameters\n");
- errno = EINVAL;
- return -1;
- }
-
- switch (dcc->type) {
- case GG_SESSION_DCC7_GET:
- dcc->state = GG_STATE_GETTING_FILE;
- dcc->check = GG_CHECK_READ;
- return 0;
-
- case GG_SESSION_DCC7_SEND:
- dcc->state = GG_STATE_SENDING_FILE;
- dcc->check = GG_CHECK_WRITE;
- return 0;
-
- case GG_SESSION_DCC7_VOICE:
- dcc->state = GG_STATE_READING_VOICE_DATA;
- dcc->check = GG_CHECK_READ;
- return 0;
- }
-
- errno = EINVAL;
-
- return -1;
-}
-
-/**
- * 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_dcc(dcc, 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_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() invalid parameters\n");
- errno = EINVAL;
- return NULL;
- }
-
- if (!(e = malloc(sizeof(struct gg_event)))) {
- gg_debug_dcc(dcc, 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;
- int fd;
- socklen_t sin_len = sizeof(sin);
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_LISTENING\n");
-
- if ((fd = accept(dcc->fd, (struct sockaddr*) &sin, &sin_len)) == -1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() accept() failed "
- "(%s)\n", strerror(errno));
- return e;
- }
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd()"
- " connection from %s:%d\n",
- inet_ntoa(sin.sin_addr), htons(sin.sin_port));
-
- if (!gg_fd_set_nonblocking(fd)) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() can't set "
- "nonblocking (%s)\n", strerror(errno));
- close(fd);
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
- return e;
- }
-
- 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;
- socklen_t error_size = sizeof(error);
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_CONNECTING\n");
-
- dcc->soft_timeout = 0;
-
- if (dcc->timeout == 0)
- error = ETIMEDOUT;
-
- if (error || (res = getsockopt(dcc->fd, SOL_SOCKET,
- SO_ERROR, &error, &error_size)) == -1 ||
- error != 0)
- {
- gg_debug_dcc(dcc, 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_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() "
- "no relay available\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_RELAY;
- 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.dcc_error = GG_ERROR_DCC7_NET;
- }
-
- return e;
- }
- }
-
- gg_debug_dcc(dcc, 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_dcc(dcc, 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 = recv(dcc->fd, &welcome, sizeof(welcome), 0)) != sizeof(welcome)) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() recv() "
- "failed (%d, %s)\n", res,
- strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
- return e;
- }
-
- if (memcmp(&welcome, &welcome_ok, sizeof(welcome))) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() invalid id\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
- 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 = recv(dcc->fd, &welcome, sizeof(welcome), 0)) != sizeof(welcome)) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() recv() "
- "failed (%d, %s)\n",
- res, strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
- return e;
- }
-
- if (memcmp(&welcome, &welcome_ok, sizeof(welcome)) != 0) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() invalid id\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
- 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_dcc(dcc, 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 = send(dcc->fd, &welcome, sizeof(welcome), 0)) != sizeof(welcome)) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() send() "
- "failed (%d, %s)\n",
- res, strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
- return e;
- }
- } else {
- struct gg_dcc7_welcome_server welcome;
-
- welcome.magic = gg_fix32(GG_DCC7_WELCOME_SERVER);
- welcome.id = dcc->cid;
-
- if ((res = send(dcc->fd, &welcome, sizeof(welcome), 0)) != sizeof(welcome)) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() send() "
- "failed (%d, %s)\n", res,
- strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
- 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];
- size_t chunk;
- int res;
-
- gg_debug_dcc(dcc, 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_dcc(dcc, 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_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() lseek() failed "
- "(%s)\n", strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_FILE;
- return e;
- }
-
- if ((chunk = dcc->size - dcc->offset) > sizeof(buf))
- chunk = sizeof(buf);
-
- if ((res = read(dcc->file_fd, buf, chunk)) < 1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() read() failed "
- "(res=%d, %s)\n", res, strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = (res == -1) ? GG_ERROR_DCC7_FILE : GG_ERROR_DCC7_EOF;
- return e;
- }
-
- if ((res = send(dcc->fd, buf, res, 0)) == -1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() send() failed "
- "(%s)\n", strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_NET;
- return e;
- }
-
- dcc->offset += res;
-
- if (dcc->offset >= dcc->size) {
- gg_debug_dcc(dcc, 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_dcc(dcc, 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_dcc(dcc, 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 = recv(dcc->fd, buf, sizeof(buf), 0)) < 1) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() recv() failed "
- "(fd=%d, res=%d, %s)\n", dcc->fd, res,
- strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = (res == -1) ? GG_ERROR_DCC7_NET : GG_ERROR_DCC7_EOF;
- return e;
- }
-
- /* XXX zapisywać do skutku? */
-
- if ((wres = write(dcc->file_fd, buf, res)) < res) {
- gg_debug_dcc(dcc, 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.dcc_error = GG_ERROR_DCC7_FILE;
- return e;
- }
-
- dcc->offset += res;
-
- if (dcc->offset >= dcc->size) {
- gg_debug_dcc(dcc, 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;
- int res;
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_RESOLVING_RELAY\n");
-
- do {
- res = gg_resolver_recv(dcc->fd, &addr, sizeof(addr));
- } while (res == -1 && errno == EINTR);
-
- dcc->sess->resolver_cleanup(&dcc->resolver, 0);
-
- if (res != sizeof(addr) || addr.s_addr == INADDR_NONE) {
- int errno_save = errno;
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() resolving failed\n");
- close(dcc->fd);
- dcc->fd = -1;
- errno = errno_save;
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_RELAY;
- return e;
- }
-
- gg_debug_dcc(dcc, 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_dcc(dcc, 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.dcc_error = GG_ERROR_DCC7_RELAY;
- return e;
- }
-
- dcc->state = GG_STATE_CONNECTING_RELAY;
- dcc->check = GG_CHECK_WRITE;
- dcc->timeout = GG_DEFAULT_TIMEOUT;
-
- e->type = GG_EVENT_DCC7_PENDING;
- e->event.dcc7_pending.dcc7 = dcc;
-
- return e;
- }
-
- case GG_STATE_CONNECTING_RELAY:
- {
- int res;
- socklen_t res_size = sizeof(res);
- struct gg_dcc7_relay_req pkt;
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_CONNECTING_RELAY\n");
-
- if (getsockopt(dcc->fd, SOL_SOCKET, SO_ERROR, &res, &res_size) != 0 || res != 0) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() connection "
- "failed (errno=%d, %s)\n",
- res, strerror(res));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_RELAY;
- 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_dcc(dcc, GG_DEBUG_DUMP, "// gg_dcc7_watch_fd()"
- " send pkt(0x%.2x)\n", gg_fix32(pkt.magic));
- gg_debug_dump_dcc(dcc, GG_DEBUG_DUMP, (const char*) &pkt, sizeof(pkt));
-
- if ((res = send(dcc->fd, &pkt, sizeof(pkt), 0)) != sizeof(pkt)) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() sending failed\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_RELAY;
- 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;
- size_t max_relay_count = (sizeof(buf) - sizeof(*pkt)) / sizeof(srv);
- int res;
- int i;
-
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_READING_RELAY\n");
-
- if ((res = recv(dcc->fd, buf, sizeof(buf), 0)) < (int) sizeof(*pkt)) {
- if (res == 0)
- errno = ECONNRESET;
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() recv() failed "
- "(%d, %s)\n", res, strerror(errno));
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_RELAY;
- 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_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_wathc_fd() invalid reply\n");
- errno = EINVAL;
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_RELAY;
- return e;
- }
-
- gg_debug_dcc(dcc, GG_DEBUG_DUMP,
- "// gg_dcc7_get_relay() read pkt(0x%.2x)\n",
- gg_fix32(pkt->magic));
- gg_debug_dump_dcc(dcc, GG_DEBUG_DUMP, buf, res);
-
- free(dcc->relay_list);
-
- dcc->relay_index = 0;
- dcc->relay_count = gg_fix32(pkt->rcount);
-
- if (dcc->relay_count > 0xffff ||
- (size_t)dcc->relay_count > max_relay_count)
- {
- gg_debug_dcc(dcc, GG_DEBUG_MISC,
- "// gg_dcc7_watch_fd() relay_count out "
- "of bounds (%d)\n", dcc->relay_count);
- dcc->relay_count = 0;
- free(e);
- return NULL;
- }
-
- dcc->relay_list = malloc(dcc->relay_count * sizeof(gg_dcc7_relay_t));
-
- if (dcc->relay_list == NULL) {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() not enough memory\n");
- 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_dcc(dcc, 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_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() no relay available\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_RELAY;
- return e;
- }
-
- return e;
- }
-
- default:
- {
- gg_debug_dcc(dcc, GG_DEBUG_MISC, "// gg_dcc7_watch_fd() GG_STATE_???\n");
- e->type = GG_EVENT_DCC7_ERROR;
- e->event.dcc_error = GG_ERROR_DCC7_HANDSHAKE;
-
- 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_dcc(dcc, GG_DEBUG_FUNCTION, "** gg_dcc7_free(%p)\n", dcc);
-
- if (!dcc)
- return;
-
- if (dcc->fd != -1)
- close(dcc->fd);
-
- if (dcc->file_fd != -1)
- gg_file_close(dcc->file_fd);
-
- if (dcc->sess)
- gg_dcc7_session_remove(dcc->sess, dcc);
-
- free(dcc->relay_list);
-
- free(dcc);
-}