--- a/src/protocols/silc/ft.c Mon Apr 16 00:43:53 2007 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,412 +0,0 @@
-/*
-
- silcgaim_ft.c
-
- Author: Pekka Riikonen <priikone@silcnet.org>
-
- Copyright (C) 2004 Pekka Riikonen
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; version 2 of the License.
-
- 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 General Public License for more details.
-
-*/
-
-#include "silcincludes.h"
-#include "silcclient.h"
-#include "silcgaim.h"
-
-/****************************** File Transfer ********************************/
-
-/* This implements the secure file transfer protocol (SFTP) using the SILC
- SFTP library implementation. The API we use from the SILC Toolkit is the
- SILC Client file transfer API, as it provides a simple file transfer we
- need in this case. We could use the SILC SFTP API directly, but it would
- be an overkill since we'd effectively re-implement the file transfer what
- the SILC Client's file transfer API already provides.
-
- From Gaim we do NOT use the FT API to do the transfer as it is very limiting.
- In fact it does not suite to file transfers like SFTP at all. For example,
- it assumes that read operations are synchronous what they are not in SFTP.
- It also assumes that the file transfer socket is to be handled by the Gaim
- eventloop, and this naturally is something we don't want to do in case of
- SILC Toolkit. The FT API suites well to purely stream based file transfers
- like HTTP GET and similar.
-
- For this reason, we directly access the Gaim GKT FT API and hack the FT
- API to merely provide the user interface experience and all the magic
- is done in the SILC Toolkit. Ie. we update the statistics information in
- the FT API for user interface, and that's it. A bit dirty but until the
- FT API gets better this is the way to go. Good thing that FT API allowed
- us to do this. */
-
-typedef struct {
- SilcGaim sg;
- SilcClientEntry client_entry;
- SilcUInt32 session_id;
- char *hostname;
- SilcUInt16 port;
- GaimXfer *xfer;
-
- SilcClientFileName completion;
- void *completion_context;
-} *SilcGaimXfer;
-
-static void
-silcgaim_ftp_monitor(SilcClient client,
- SilcClientConnection conn,
- SilcClientMonitorStatus status,
- SilcClientFileError error,
- SilcUInt64 offset,
- SilcUInt64 filesize,
- SilcClientEntry client_entry,
- SilcUInt32 session_id,
- const char *filepath,
- void *context)
-{
- SilcGaimXfer xfer = context;
- GaimConnection *gc = xfer->sg->gc;
- char tmp[256];
-
- if (status == SILC_CLIENT_FILE_MONITOR_CLOSED) {
- gaim_xfer_unref(xfer->xfer);
- silc_free(xfer);
- return;
- }
-
- if (status == SILC_CLIENT_FILE_MONITOR_KEY_AGREEMENT)
- return;
-
- if (status == SILC_CLIENT_FILE_MONITOR_ERROR) {
- if (error == SILC_CLIENT_FILE_NO_SUCH_FILE) {
- g_snprintf(tmp, sizeof(tmp), "No such file %s",
- filepath ? filepath : "[N/A]");
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Error during file transfer"), tmp);
- } else if (error == SILC_CLIENT_FILE_PERMISSION_DENIED) {
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Error during file transfer"),
- _("Permission denied"));
- } else if (error == SILC_CLIENT_FILE_KEY_AGREEMENT_FAILED) {
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Error during file transfer"),
- _("Key agreement failed"));
- } else if (error == SILC_CLIENT_FILE_UNKNOWN_SESSION) {
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Error during file transfer"),
- _("File transfer session does not exist"));
- } else {
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Error during file transfer"), NULL);
- }
- silc_client_file_close(client, conn, session_id);
- gaim_xfer_unref(xfer->xfer);
- silc_free(xfer);
- return;
- }
-
- /* Update file transfer UI */
- if (!offset && filesize)
- gaim_xfer_set_size(xfer->xfer, filesize);
- if (offset && filesize) {
- xfer->xfer->bytes_sent = offset;
- xfer->xfer->bytes_remaining = filesize - offset;
- }
- gaim_xfer_update_progress(xfer->xfer);
-
- if (status == SILC_CLIENT_FILE_MONITOR_SEND ||
- status == SILC_CLIENT_FILE_MONITOR_RECEIVE) {
- if (offset == filesize) {
- /* Download finished */
- gaim_xfer_set_completed(xfer->xfer, TRUE);
- silc_client_file_close(client, conn, session_id);
- }
- }
-}
-
-static void
-silcgaim_ftp_cancel(GaimXfer *x)
-{
- SilcGaimXfer xfer = x->data;
- xfer->xfer->status = GAIM_XFER_STATUS_CANCEL_LOCAL;
- gaim_xfer_update_progress(xfer->xfer);
- silc_client_file_close(xfer->sg->client, xfer->sg->conn, xfer->session_id);
-}
-
-static void
-silcgaim_ftp_ask_name_cancel(GaimXfer *x)
-{
- SilcGaimXfer xfer = x->data;
-
- /* Cancel the transmission */
- xfer->completion(NULL, xfer->completion_context);
- silc_client_file_close(xfer->sg->client, xfer->sg->conn, xfer->session_id);
-}
-
-static void
-silcgaim_ftp_ask_name_ok(GaimXfer *x)
-{
- SilcGaimXfer xfer = x->data;
- const char *name;
-
- name = gaim_xfer_get_local_filename(x);
- g_unlink(name);
- xfer->completion(name, xfer->completion_context);
-}
-
-static void
-silcgaim_ftp_ask_name(SilcClient client,
- SilcClientConnection conn,
- SilcUInt32 session_id,
- const char *remote_filename,
- SilcClientFileName completion,
- void *completion_context,
- void *context)
-{
- SilcGaimXfer xfer = context;
-
- xfer->completion = completion;
- xfer->completion_context = completion_context;
-
- gaim_xfer_set_init_fnc(xfer->xfer, silcgaim_ftp_ask_name_ok);
- gaim_xfer_set_request_denied_fnc(xfer->xfer, silcgaim_ftp_ask_name_cancel);
-
- /* Request to save the file */
- gaim_xfer_set_filename(xfer->xfer, remote_filename);
- gaim_xfer_request(xfer->xfer);
-}
-
-static void
-silcgaim_ftp_request_result(GaimXfer *x)
-{
- SilcGaimXfer xfer = x->data;
- SilcClientFileError status;
- GaimConnection *gc = xfer->sg->gc;
-
- if (gaim_xfer_get_status(x) != GAIM_XFER_STATUS_ACCEPTED)
- return;
-
- /* Start the file transfer */
- status = silc_client_file_receive(xfer->sg->client, xfer->sg->conn,
- silcgaim_ftp_monitor, xfer,
- NULL, xfer->session_id,
- silcgaim_ftp_ask_name, xfer);
- switch (status) {
- case SILC_CLIENT_FILE_OK:
- return;
- break;
-
- case SILC_CLIENT_FILE_UNKNOWN_SESSION:
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("No file transfer session active"), NULL);
- break;
-
- case SILC_CLIENT_FILE_ALREADY_STARTED:
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("File transfer already started"), NULL);
- break;
-
- case SILC_CLIENT_FILE_KEY_AGREEMENT_FAILED:
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Could not perform key agreement for file transfer"),
- NULL);
- break;
-
- default:
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Could not start the file transfer"), NULL);
- break;
- }
-
- /* Error */
- gaim_xfer_unref(xfer->xfer);
- g_free(xfer->hostname);
- silc_free(xfer);
-}
-
-static void
-silcgaim_ftp_request_denied(GaimXfer *x)
-{
-
-}
-
-void silcgaim_ftp_request(SilcClient client, SilcClientConnection conn,
- SilcClientEntry client_entry, SilcUInt32 session_id,
- const char *hostname, SilcUInt16 port)
-{
- GaimConnection *gc = client->application;
- SilcGaim sg = gc->proto_data;
- SilcGaimXfer xfer;
-
- xfer = silc_calloc(1, sizeof(*xfer));
- if (!xfer) {
- silc_client_file_close(sg->client, sg->conn, xfer->session_id);
- return;
- }
-
- xfer->sg = sg;
- xfer->client_entry = client_entry;
- xfer->session_id = session_id;
- xfer->hostname = g_strdup(hostname);
- xfer->port = port;
- xfer->xfer = gaim_xfer_new(xfer->sg->account, GAIM_XFER_RECEIVE,
- xfer->client_entry->nickname);
- if (!xfer->xfer) {
- silc_client_file_close(xfer->sg->client, xfer->sg->conn, xfer->session_id);
- g_free(xfer->hostname);
- silc_free(xfer);
- return;
- }
- gaim_xfer_set_init_fnc(xfer->xfer, silcgaim_ftp_request_result);
- gaim_xfer_set_request_denied_fnc(xfer->xfer, silcgaim_ftp_request_denied);
- gaim_xfer_set_cancel_recv_fnc(xfer->xfer, silcgaim_ftp_cancel);
- xfer->xfer->remote_ip = g_strdup(hostname);
- xfer->xfer->remote_port = port;
- xfer->xfer->data = xfer;
-
- /* File transfer request */
- gaim_xfer_request(xfer->xfer);
-}
-
-static void
-silcgaim_ftp_send_cancel(GaimXfer *x)
-{
- SilcGaimXfer xfer = x->data;
- silc_client_file_close(xfer->sg->client, xfer->sg->conn, xfer->session_id);
- gaim_xfer_unref(xfer->xfer);
- g_free(xfer->hostname);
- silc_free(xfer);
-}
-
-static void
-silcgaim_ftp_send(GaimXfer *x)
-{
- SilcGaimXfer xfer = x->data;
- const char *name;
- char *local_ip = NULL, *remote_ip = NULL;
- gboolean local = TRUE;
-
- name = gaim_xfer_get_local_filename(x);
-
- /* Do the same magic what we do with key agreement (see silcgaim_buddy.c)
- to see if we are behind NAT. */
- if (silc_net_check_local_by_sock(xfer->sg->conn->sock->sock,
- NULL, &local_ip)) {
- /* Check if the IP is private */
- if (silcgaim_ip_is_private(local_ip)) {
- local = FALSE;
- /* Local IP is private, resolve the remote server IP to see whether
- we are talking to Internet or just on LAN. */
- if (silc_net_check_host_by_sock(xfer->sg->conn->sock->sock, NULL,
- &remote_ip))
- if (silcgaim_ip_is_private(remote_ip))
- /* We assume we are in LAN. Let's provide the connection point. */
- local = TRUE;
- }
- }
-
- if (local && !local_ip)
- local_ip = silc_net_localip();
-
- /* Send the file */
- silc_client_file_send(xfer->sg->client, xfer->sg->conn,
- silcgaim_ftp_monitor, xfer,
- local_ip, 0, !local, xfer->client_entry,
- name, &xfer->session_id);
-
- silc_free(local_ip);
- silc_free(remote_ip);
-}
-
-static void
-silcgaim_ftp_send_file_resolved(SilcClient client,
- SilcClientConnection conn,
- SilcClientEntry *clients,
- SilcUInt32 clients_count,
- void *context)
-{
- GaimConnection *gc = client->application;
- char tmp[256];
-
- if (!clients) {
- g_snprintf(tmp, sizeof(tmp),
- _("User %s is not present in the network"),
- (const char *)context);
- gaim_notify_error(gc, _("Secure File Transfer"),
- _("Cannot send file"), tmp);
- silc_free(context);
- return;
- }
-
- silcgaim_ftp_send_file(client->application, (const char *)context, NULL);
- silc_free(context);
-}
-
-GaimXfer *silcgaim_ftp_new_xfer(GaimConnection *gc, const char *name)
-{
- SilcGaim sg = gc->proto_data;
- SilcClient client = sg->client;
- SilcClientConnection conn = sg->conn;
- SilcClientEntry *clients;
- SilcUInt32 clients_count;
- SilcGaimXfer xfer;
- char *nickname;
-
- g_return_val_if_fail(name != NULL, NULL);
-
- if (!silc_parse_userfqdn(name, &nickname, NULL))
- return NULL;
-
- /* Find client entry */
- clients = silc_client_get_clients_local(client, conn, nickname, name,
- &clients_count);
- if (!clients) {
- silc_client_get_clients(client, conn, nickname, NULL,
- silcgaim_ftp_send_file_resolved,
- strdup(name));
- silc_free(nickname);
- return NULL;
- }
-
- xfer = silc_calloc(1, sizeof(*xfer));
-
- g_return_val_if_fail(xfer != NULL, NULL);
-
- xfer->sg = sg;
- xfer->client_entry = clients[0];
- xfer->xfer = gaim_xfer_new(xfer->sg->account, GAIM_XFER_SEND,
- xfer->client_entry->nickname);
- if (!xfer->xfer) {
- silc_client_file_close(xfer->sg->client, xfer->sg->conn, xfer->session_id);
- g_free(xfer->hostname);
- silc_free(xfer);
- return NULL;
- }
- gaim_xfer_set_init_fnc(xfer->xfer, silcgaim_ftp_send);
- gaim_xfer_set_request_denied_fnc(xfer->xfer, silcgaim_ftp_request_denied);
- gaim_xfer_set_cancel_send_fnc(xfer->xfer, silcgaim_ftp_send_cancel);
- xfer->xfer->data = xfer;
-
- silc_free(clients);
- silc_free(nickname);
-
- return xfer->xfer;
-}
-
-void silcgaim_ftp_send_file(GaimConnection *gc, const char *name, const char *file)
-{
- GaimXfer *xfer = silcgaim_ftp_new_xfer(gc, name);
-
- g_return_if_fail(xfer != NULL);
-
- /* Choose file to send */
- if (file)
- gaim_xfer_request_accepted(xfer, file);
- else
- gaim_xfer_request(xfer);
-}