diff options
Diffstat (limited to 'protocols/msn/invitation.c')
| -rw-r--r-- | protocols/msn/invitation.c | 665 |
1 files changed, 0 insertions, 665 deletions
diff --git a/protocols/msn/invitation.c b/protocols/msn/invitation.c deleted file mode 100644 index c386bdb9..00000000 --- a/protocols/msn/invitation.c +++ /dev/null @@ -1,665 +0,0 @@ -/********************************************************************\ -* BitlBee -- An IRC to other IM-networks gateway * -* * -* Copyright 2008 Uli Meis * -* Copyright 2006 Marijn Kruisselbrink and others * -\********************************************************************/ - -/* MSN module - File transfer support */ - -/* - 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; either version 2 of the License, or - (at your option) any later version. - - 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. - - You should have received a copy of the GNU General Public License with - the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; - if not, write to the Free Software Foundation, Inc., 51 Franklin St., - Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "bitlbee.h" -#include "invitation.h" -#include "msn.h" -#include "lib/ftutil.h" - -#ifdef debug -#undef debug -#endif -#define debug(msg ...) log_message(LOGLVL_INFO, msg) - -static void msn_ftp_free(file_transfer_t *file); -static void msn_ftpr_accept(file_transfer_t *file); -static void msn_ftp_finished(file_transfer_t *file); -static void msn_ftp_canceled(file_transfer_t *file, char *reason); -static gboolean msn_ftpr_write_request(file_transfer_t *file); - -static gboolean msn_ftp_connected(gpointer data, gint fd, b_input_condition cond); -static gboolean msn_ftp_read(gpointer data, gint fd, b_input_condition cond); -gboolean msn_ftps_write(file_transfer_t *file, char *buffer, unsigned int len); - -/* - * Vararg wrapper for imcb_file_canceled(). - */ -gboolean msn_ftp_abort(file_transfer_t *file, char *format, ...) -{ - va_list params; - - va_start(params, format); - char error[128]; - - if (vsnprintf(error, 128, format, params) < 0) { - sprintf(error, "internal error parsing error string (BUG)"); - } - va_end(params); - imcb_file_canceled(file, error); - return FALSE; -} - -/* very useful */ -#define ASSERTSOCKOP(op, msg) \ - if ((op) == -1) { \ - return msn_ftp_abort(file, msg ": %s", strerror(errno)); } - -void msn_ftp_invitation_cmd(struct im_connection *ic, char *who, int cookie, char *icmd, - char *trailer) -{ - struct msn_message *m = g_new0(struct msn_message, 1); - - m->text = g_strdup_printf("%s" - "Invitation-Command: %s\r\n" - "Invitation-Cookie: %u\r\n" - "%s", - MSN_INVITE_HEADERS, - icmd, - cookie, - trailer); - - m->who = g_strdup(who); - - msn_sb_write_msg(ic, m); -} - -void msn_ftp_cancel_invite(struct im_connection *ic, char *who, int cookie, char *code) -{ - char buf[64]; - - g_snprintf(buf, sizeof(buf), "Cancel-Code: %s\r\n", code); - msn_ftp_invitation_cmd(ic, who, cookie, "CANCEL", buf); -} - -void msn_ftp_transfer_request(struct im_connection *ic, file_transfer_t *file, char *who) -{ - unsigned int cookie = time(NULL); /* TODO: randomize */ - char buf[2048]; - - msn_filetransfer_t *msn_file = g_new0(msn_filetransfer_t, 1); - - file->data = msn_file; - file->free = msn_ftp_free; - file->canceled = msn_ftp_canceled; - file->write = msn_ftps_write; - msn_file->md = ic->proto_data; - msn_file->invite_cookie = cookie; - msn_file->handle = g_strdup(who); - msn_file->dcc = file; - msn_file->md->filetransfers = g_slist_prepend(msn_file->md->filetransfers, msn_file->dcc); - msn_file->fd = -1; - msn_file->sbufpos = 3; - - g_snprintf(buf, sizeof(buf), - "Application-Name: File Transfer\r\n" - "Application-GUID: {5D3E02AB-6190-11d3-BBBB-00C04F795683}\r\n" - "Application-File: %s\r\n" - "Application-FileSize: %zd\r\n", - file->file_name, - file->file_size); - - msn_ftp_invitation_cmd(msn_file->md->ic, msn_file->handle, cookie, "INVITE", buf); - - imcb_file_recv_start(file); -} - -void msn_invitation_invite(struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen) -{ - char *itype = msn_findheader(body, "Application-GUID:", blen); - char *name, *size, *invitecookie, *reject = NULL; - user_t *u; - size_t isize; - file_transfer_t *file; - - if (!itype || strcmp(itype, "{5D3E02AB-6190-11d3-BBBB-00C04F795683}") != 0) { - /* Don't know what that is - don't care */ - char *iname = msn_findheader(body, "Application-Name:", blen); - imcb_log(sb->ic, "Received unknown MSN invitation %s (%s) from %s", - itype ? : "with no GUID", iname ? iname : "no application name", handle); - g_free(iname); - reject = "REJECT_NOT_INSTALLED"; - } else if ( - !(name = msn_findheader(body, "Application-File:", blen)) || - !(size = msn_findheader(body, "Application-FileSize:", blen)) || - !(invitecookie = msn_findheader(body, "Invitation-Cookie:", blen)) || - !(isize = atoll(size))) { - imcb_log(sb->ic, "Received corrupted transfer request from %s" - "(name=%s, size=%s, invitecookie=%s)", - handle, name, size, invitecookie); - reject = "REJECT"; - } else if (!(u = user_findhandle(sb->ic, handle))) { - imcb_log(sb->ic, "Error in parsing transfer request, User '%s'" - "is not in contact list", handle); - reject = "REJECT"; - } else if (!(file = imcb_file_send_start(sb->ic, handle, name, isize))) { - imcb_log(sb->ic, "Error initiating transfer for request from %s for %s", - handle, name); - reject = "REJECT"; - } else { - msn_filetransfer_t *msn_file = g_new0(msn_filetransfer_t, 1); - file->data = msn_file; - file->accept = msn_ftpr_accept; - file->free = msn_ftp_free; - file->finished = msn_ftp_finished; - file->canceled = msn_ftp_canceled; - file->write_request = msn_ftpr_write_request; - msn_file->md = sb->ic->proto_data; - msn_file->invite_cookie = cookie; - msn_file->handle = g_strdup(handle); - msn_file->dcc = file; - msn_file->md->filetransfers = g_slist_prepend(msn_file->md->filetransfers, msn_file->dcc); - msn_file->fd = -1; - } - - if (reject) { - msn_ftp_cancel_invite(sb->ic, sb->who, cookie, reject); - } - - g_free(name); - g_free(size); - g_free(invitecookie); - g_free(itype); -} - -msn_filetransfer_t* msn_find_filetransfer(struct msn_data *md, unsigned int cookie, char *handle) -{ - GSList *l; - - for (l = md->filetransfers; l; l = l->next) { - msn_filetransfer_t *file = ((file_transfer_t *) l->data)->data; - if (file->invite_cookie == cookie && strcmp(handle, file->handle) == 0) { - return file; - } - } - return NULL; -} - -gboolean msn_ftps_connected(gpointer data, gint fd, b_input_condition cond) -{ - file_transfer_t *file = data; - msn_filetransfer_t *msn_file = file->data; - struct sockaddr_storage clt_addr; - socklen_t ssize = sizeof(clt_addr); - - debug("Connected to MSNFTP client"); - - ASSERTSOCKOP(msn_file->fd = accept(fd, (struct sockaddr *) &clt_addr, &ssize), "Accepting connection"); - - closesocket(fd); - fd = msn_file->fd; - sock_make_nonblocking(fd); - - msn_file->r_event_id = b_input_add(fd, B_EV_IO_READ, msn_ftp_read, file); - - return FALSE; -} - -void msn_invitations_accept(msn_filetransfer_t *msn_file, struct msn_switchboard *sb, char *handle, unsigned int cookie, - char *body, int blen) -{ - file_transfer_t *file = msn_file->dcc; - char buf[1024]; - unsigned int acookie = time(NULL); - char host[HOST_NAME_MAX + 1]; - char port[6]; - char *errmsg; - - msn_file->auth_cookie = acookie; - - if ((msn_file->fd = ft_listen(NULL, host, port, FALSE, &errmsg)) == -1) { - msn_ftp_abort(file, "Failed to listen locally, check your ft_listen setting in bitlbee.conf: %s", - errmsg); - return; - } - - msn_file->r_event_id = b_input_add(msn_file->fd, B_EV_IO_READ, msn_ftps_connected, file); - - g_snprintf(buf, sizeof(buf), - "IP-Address: %s\r\n" - "Port: %s\r\n" - "AuthCookie: %d\r\n" - "Launch-Application: FALSE\r\n" - "Request-Data: IP-Address:\r\n\r\n", - host, - port, - msn_file->auth_cookie); - - msn_ftp_invitation_cmd(msn_file->md->ic, handle, msn_file->invite_cookie, "ACCEPT", buf); -} - -void msn_invitationr_accept(msn_filetransfer_t *msn_file, struct msn_switchboard *sb, char *handle, unsigned int cookie, - char *body, int blen) -{ - file_transfer_t *file = msn_file->dcc; - char *authcookie, *ip, *port; - - if (!(authcookie = msn_findheader(body, "AuthCookie:", blen)) || - !(ip = msn_findheader(body, "IP-Address:", blen)) || - !(port = msn_findheader(body, "Port:", blen))) { - msn_ftp_abort(file, "Received invalid accept reply"); - } else if ( - (msn_file->fd = proxy_connect(ip, atoi(port), msn_ftp_connected, file)) - < 0) { - msn_ftp_abort(file, "Error connecting to MSN client"); - } else { - msn_file->auth_cookie = strtoul(authcookie, NULL, 10); - } - - g_free(authcookie); - g_free(ip); - g_free(port); -} - -void msn_invitation_accept(struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen) -{ - msn_filetransfer_t *msn_file = msn_find_filetransfer(sb->ic->proto_data, cookie, handle); - file_transfer_t *file = msn_file ? msn_file->dcc : NULL; - - if (!msn_file) { - imcb_log(sb->ic, "Received invitation ACCEPT message for unknown invitation (already aborted?)"); - } else if (file->sending) { - msn_invitations_accept(msn_file, sb, handle, cookie, body, blen); - } else { - msn_invitationr_accept(msn_file, sb, handle, cookie, body, blen); - } -} - -void msn_invitation_cancel(struct msn_switchboard *sb, char *handle, unsigned int cookie, char *body, int blen) -{ - msn_filetransfer_t *msn_file = msn_find_filetransfer(sb->ic->proto_data, cookie, handle); - - if (!msn_file) { - imcb_log(sb->ic, "Received invitation CANCEL message for unknown invitation (already aborted?)"); - } else { - msn_ftp_abort(msn_file->dcc, msn_findheader(body, "Cancel-Code:", blen)); - } -} - -int msn_ftp_write(file_transfer_t *file, char *format, ...) -{ - msn_filetransfer_t *msn_file = file->data; - va_list params; - int st; - char *s; - - va_start(params, format); - s = g_strdup_vprintf(format, params); - va_end(params); - - st = write(msn_file->fd, s, strlen(s)); - if (st != strlen(s)) { - return msn_ftp_abort(file, "Error sending data over MSNFTP connection: %s", - strerror(errno)); - } - - g_free(s); - return 1; -} - -gboolean msn_ftp_connected(gpointer data, gint fd, b_input_condition cond) -{ - file_transfer_t *file = data; - msn_filetransfer_t *msn_file = file->data; - - debug("Connected to MSNFTP server, starting authentication"); - if (!msn_ftp_write(file, "VER MSNFTP\r\n")) { - return FALSE; - } - - sock_make_nonblocking(msn_file->fd); - msn_file->r_event_id = b_input_add(msn_file->fd, B_EV_IO_READ, msn_ftp_read, file); - - return FALSE; -} - -gboolean msn_ftp_handle_command(file_transfer_t *file, char* line) -{ - msn_filetransfer_t *msn_file = file->data; - char **cmd = msn_linesplit(line); - int count = 0; - - if (cmd[0]) { - while (cmd[++count]) { - ; - } - } - - if (count < 1) { - return msn_ftp_abort(file, "Missing command in MSNFTP communication"); - } - - if (strcmp(cmd[0], "VER") == 0) { - if (strcmp(cmd[1], "MSNFTP") != 0) { - return msn_ftp_abort(file, "Unsupported filetransfer protocol: %s", cmd[1]); - } - if (file->sending) { - msn_ftp_write(file, "VER MSNFTP\r\n"); - } else { - msn_ftp_write(file, "USR %s %u\r\n", msn_file->md->ic->acc->user, msn_file->auth_cookie); - } - } else if (strcmp(cmd[0], "FIL") == 0) { - if (strtoul(cmd[1], NULL, 10) != file->file_size) { - return msn_ftp_abort(file, - "FIL reply contains a different file size than the size in the invitation"); - } - msn_ftp_write(file, "TFR\r\n"); - msn_file->status |= MSN_TRANSFER_RECEIVING; - } else if (strcmp(cmd[0], "USR") == 0) { - if ((strcmp(cmd[1], msn_file->handle) != 0) || - (strtoul(cmd[2], NULL, 10) != msn_file->auth_cookie)) { - msn_ftp_abort(file, "Authentication failed. " - "Expected handle: %s (got %s), cookie: %u (got %s)", - msn_file->handle, cmd[1], - msn_file->auth_cookie, cmd[2]); - } - msn_ftp_write(file, "FIL %zu\r\n", file->file_size); - } else if (strcmp(cmd[0], "TFR") == 0) { - file->write_request(file); - } else if (strcmp(cmd[0], "BYE") == 0) { - unsigned int retcode = count > 1 ? atoi(cmd[1]) : 1; - - if ((retcode == 16777989) || (retcode == 16777987)) { - imcb_file_finished(file); - } else if (retcode == 2147942405) { - imcb_file_canceled(file, "Failure: receiver is out of disk space"); - } else if (retcode == 2164261682) { - imcb_file_canceled(file, "Failure: receiver cancelled the transfer"); - } else if (retcode == 2164261683) { - imcb_file_canceled(file, "Failure: sender has cancelled the transfer"); - } else if (retcode == 2164261694) { - imcb_file_canceled(file, "Failure: connection is blocked"); - } else { - char buf[128]; - - sprintf(buf, "Failure: unknown BYE code: %d", retcode); - imcb_file_canceled(file, buf); - } - } else if (strcmp(cmd[0], "CCL") == 0) { - imcb_file_canceled(file, "Failure: receiver cancelled the transfer"); - } else { - msn_ftp_abort(file, "Received invalid command %s from msn client", cmd[0]); - } - return TRUE; -} - -gboolean msn_ftp_send(gpointer data, gint fd, b_input_condition cond) -{ - file_transfer_t *file = data; - msn_filetransfer_t *msn_file = file->data; - - msn_file->w_event_id = 0; - - file->write_request(file); - - return FALSE; -} - -/* - * This should only be called if we can write, so just do it. - * Add a write watch so we can write more during the next cycle (if possible). - * This got a bit complicated because (at least) amsn expects packets of size 2045. - */ -gboolean msn_ftps_write(file_transfer_t *file, char *buffer, unsigned int len) -{ - msn_filetransfer_t *msn_file = file->data; - int ret, overflow; - - /* what we can't send now */ - overflow = msn_file->sbufpos + len - MSNFTP_PSIZE; - - /* append what we can do the send buffer */ - memcpy(msn_file->sbuf + msn_file->sbufpos, buffer, MIN(len, MSNFTP_PSIZE - msn_file->sbufpos)); - msn_file->sbufpos += MIN(len, MSNFTP_PSIZE - msn_file->sbufpos); - - /* if we don't have enough for a full packet and there's more wait for it */ - if ((msn_file->sbufpos < MSNFTP_PSIZE) && - (msn_file->data_sent + msn_file->sbufpos - 3 < file->file_size)) { - if (!msn_file->w_event_id) { - msn_file->w_event_id = b_input_add(msn_file->fd, B_EV_IO_WRITE, msn_ftp_send, file); - } - return TRUE; - } - - /* Accumulated enough data, lets send something out */ - - msn_file->sbuf[0] = 0; - msn_file->sbuf[1] = (msn_file->sbufpos - 3) & 0xff; - msn_file->sbuf[2] = ((msn_file->sbufpos - 3) >> 8) & 0xff; - - ASSERTSOCKOP(ret = send(msn_file->fd, msn_file->sbuf, msn_file->sbufpos, 0), "Sending"); - - msn_file->data_sent += ret - 3; - - /* TODO: this should really not be fatal */ - if (ret < msn_file->sbufpos) { - return msn_ftp_abort(file, "send() sent %d instead of %d (send buffer full!)", ret, msn_file->sbufpos); - } - - msn_file->sbufpos = 3; - - if (overflow > 0) { - while (overflow > (MSNFTP_PSIZE - 3)) { - if (!msn_ftps_write(file, buffer + len - overflow, MSNFTP_PSIZE - 3)) { - return FALSE; - } - overflow -= MSNFTP_PSIZE - 3; - } - return msn_ftps_write(file, buffer + len - overflow, overflow); - } - - if (msn_file->data_sent == file->file_size) { - if (msn_file->w_event_id) { - b_event_remove(msn_file->w_event_id); - msn_file->w_event_id = 0; - } - } else { - /* we might already be listening if this is data from an overflow */ - if (!msn_file->w_event_id) { - msn_file->w_event_id = b_input_add(msn_file->fd, B_EV_IO_WRITE, msn_ftp_send, file); - } - } - - return TRUE; -} - -/* Binary part of the file transfer protocol */ -gboolean msn_ftpr_read(file_transfer_t *file) -{ - msn_filetransfer_t *msn_file = file->data; - int st; - unsigned char buf[3]; - - if (msn_file->data_remaining) { - msn_file->r_event_id = 0; - - ASSERTSOCKOP(st = read(msn_file->fd, file->buffer, MIN(sizeof(file->buffer), - msn_file->data_remaining)), "Receiving"); - - if (st == 0) { - return msn_ftp_abort(file, "Remote end closed connection"); - } - - msn_file->data_sent += st; - - msn_file->data_remaining -= st; - - file->write(file, file->buffer, st); - - if (msn_file->data_sent >= file->file_size) { - imcb_file_finished(file); - } - - return FALSE; - } else { - ASSERTSOCKOP(st = read(msn_file->fd, buf, 1), "Receiving"); - if (st == 0) { - return msn_ftp_abort(file, "read returned EOF while reading data header from msn client"); - } else if (buf[0] == '\r' || buf[0] == '\n') { - debug("Discarding extraneous newline"); - } else if (buf[0] != 0) { - msn_ftp_abort(file, "Remote end canceled the transfer"); - /* don't really care about these last 2 (should be 0,0) */ - read(msn_file->fd, buf, 2); - return FALSE; - } else { - unsigned int size; - ASSERTSOCKOP(st = read(msn_file->fd, buf, 2), "Receiving"); - if (st < 2) { - return msn_ftp_abort(file, - "read returned EOF while reading data header from msn client"); - } - - size = buf[0] + ((unsigned int) buf[1] << 8); - msn_file->data_remaining = size; - } - } - return TRUE; -} - -/* Text mode part of the file transfer protocol */ -gboolean msn_ftp_txtproto(file_transfer_t *file) -{ - msn_filetransfer_t *msn_file = file->data; - int i = msn_file->tbufpos, st; - char *tbuf = msn_file->tbuf; - - ASSERTSOCKOP(st = read(msn_file->fd, - tbuf + msn_file->tbufpos, - sizeof(msn_file->tbuf) - msn_file->tbufpos), - "Receiving"); - - if (st == 0) { - return msn_ftp_abort(file, "read returned EOF while reading text from msn client"); - } - - msn_file->tbufpos += st; - - do { - for (; i < msn_file->tbufpos; i++) { - if (tbuf[i] == '\n' || tbuf[i] == '\r') { - tbuf[i] = '\0'; - if (i > 0) { - msn_ftp_handle_command(file, tbuf); - } else { - while (tbuf[i] == '\n' || tbuf[i] == '\r') { - i++; - } - } - memmove(tbuf, tbuf + i + 1, msn_file->tbufpos - i - 1); - msn_file->tbufpos -= i + 1; - i = 0; - break; - } - } - } while (i < msn_file->tbufpos); - - if (msn_file->tbufpos == sizeof(msn_file->tbuf)) { - return msn_ftp_abort(file, - "Line exceeded %d bytes in text protocol", - sizeof(msn_file->tbuf)); - } - return TRUE; -} - -gboolean msn_ftp_read(gpointer data, gint fd, b_input_condition cond) -{ - file_transfer_t *file = data; - msn_filetransfer_t *msn_file = file->data; - - if (msn_file->status & MSN_TRANSFER_RECEIVING) { - return msn_ftpr_read(file); - } else { - return msn_ftp_txtproto(file); - } -} - -void msn_ftp_free(file_transfer_t *file) -{ - msn_filetransfer_t *msn_file = file->data; - - if (msn_file->r_event_id) { - b_event_remove(msn_file->r_event_id); - } - - if (msn_file->w_event_id) { - b_event_remove(msn_file->w_event_id); - } - - if (msn_file->fd != -1) { - closesocket(msn_file->fd); - } - - msn_file->md->filetransfers = g_slist_remove(msn_file->md->filetransfers, msn_file->dcc); - - g_free(msn_file->handle); - - g_free(msn_file); -} - -void msn_ftpr_accept(file_transfer_t *file) -{ - msn_filetransfer_t *msn_file = file->data; - - msn_ftp_invitation_cmd(msn_file->md->ic, msn_file->handle, msn_file->invite_cookie, "ACCEPT", - "Launch-Application: FALSE\r\n" - "Request-Data: IP-Address:\r\n"); -} - -void msn_ftp_finished(file_transfer_t *file) -{ - msn_ftp_write(file, "BYE 16777989\r\n"); -} - -void msn_ftp_canceled(file_transfer_t *file, char *reason) -{ - msn_filetransfer_t *msn_file = file->data; - - msn_ftp_cancel_invite(msn_file->md->ic, msn_file->handle, - msn_file->invite_cookie, - file->status & FT_STATUS_TRANSFERRING ? - "FTTIMEOUT" : - "FAIL"); - - imcb_log(msn_file->md->ic, "File transfer aborted: %s", reason); -} - -gboolean msn_ftpr_write_request(file_transfer_t *file) -{ - msn_filetransfer_t *msn_file = file->data; - - if (msn_file->r_event_id != 0) { - msn_ftp_abort(file, - "BUG in MSN file transfer:" - "write_request called when" - "already watching for input"); - return FALSE; - } - - msn_file->r_event_id = - b_input_add(msn_file->fd, B_EV_IO_READ, msn_ftp_read, file); - - return TRUE; -} |