struct sipmsg *sipmsg_copy(const struct sipmsg *other) {
struct sipmsg *msg = g_new0(struct sipmsg, 1);
GSList *list;
msg->response = other->response;
msg->responsestr = g_strdup(other->responsestr);
msg->method = g_strdup(other->method);
msg->target = g_strdup(other->target);
list = other->headers;
while(list) {
struct sipnameval *elem = list->data;
sipmsg_add_header_now(msg, elem->name, elem->value);
list = list->next;
}
list = other->new_headers;
while(list) {
struct sipnameval *elem = list->data;
sipmsg_add_header(msg, elem->name, elem->value);
list = list->next;
}
msg->bodylen = other->bodylen;
msg->body = g_memdup(other->body, other->bodylen);
msg->signature = g_strdup(other->signature);
msg->rand = g_strdup(other->rand);
msg->num = g_strdup(other->num);
return msg;
}
static void sipe_invite_mime_cb(gpointer user_data, const GSList *fields,
const gchar *body, gsize length)
{
const gchar *type = sipe_utils_nameval_find(fields, "Content-Type");
const gchar *cd = sipe_utils_nameval_find(fields, "Content-Disposition");
if (!g_str_has_prefix(type, "application/sdp"))
return;
if (!cd || !strstr(cd, "ms-proxy-2007fallback")) {
struct sipmsg *msg = user_data;
const gchar* msg_ct = sipmsg_find_header(msg, "Content-Type");
if (g_str_has_prefix(msg_ct, "application/sdp")) {
/* We have already found suitable alternative and set message's body
* and Content-Type accordingly */
return;
}
sipmsg_remove_header_now(msg, "Content-Type");
sipmsg_add_header_now(msg, "Content-Type", type);
/* Replace message body with chosen alternative, so we can continue to
* process it as a normal single part message. */
g_free(msg->body);
msg->body = g_strndup(body, length);
msg->bodylen = length;
}
}
static void sipe_invite_mime_mixed_cb(gpointer user_data, const GSList *fields,
SIPE_UNUSED_PARAMETER const gchar *body, SIPE_UNUSED_PARAMETER gsize length)
{
const gchar *ctype = sipe_utils_nameval_find(fields, "Content-Type");
/* Lync 2010 file transfer */
if (g_str_has_prefix(ctype, "application/ms-filetransfer+xml")) {
struct sipmsg *msg = user_data;
sipmsg_remove_header_now(msg, "Content-Type");
sipmsg_add_header_now(msg, "Content-Type", ctype);
/* Right now, we do not care about the message body, only detect new
* file transfer protocol from Content-Type and reply with
* 488 Not Acceptable Here to force the old MSOC behavior.
*
* TODO: Extend sipmsg so that it supports multipart messages, as to
* implement the new protocol, we need access to both parts of the
* message for further processing. */
}
}
static void
accept_incoming_invite_conf(struct sipe_core_private *sipe_private,
gchar *focus_uri,
gboolean audio,
struct sipmsg *msg)
{
struct sip_session *session;
gchar *newTag = gentag();
const gchar *oldHeader = sipmsg_find_header(msg, "To");
gchar *newHeader;
newHeader = g_strdup_printf("%s;tag=%s", oldHeader, newTag);
g_free(newTag);
sipmsg_remove_header_now(msg, "To");
sipmsg_add_header_now(msg, "To", newHeader);
g_free(newHeader);
/* acknowledge invite */
sip_transport_response(sipe_private, msg, 200, "OK", NULL);
/* add self to conf */
session = sipe_conf_create(sipe_private, NULL, focus_uri);
session->is_call = audio;
}
void process_incoming_invite(struct sipe_core_private *sipe_private,
struct sipmsg *msg)
{
gchar *newTag;
const gchar *oldHeader;
gchar *newHeader;
gboolean is_multiparty = FALSE;
gboolean was_multiparty = TRUE;
gboolean just_joined = FALSE;
gchar *from;
const gchar *callid = sipmsg_find_header(msg, "Call-ID");
const gchar *roster_manager = sipmsg_find_header(msg, "Roster-Manager");
const gchar *end_points_hdr = sipmsg_find_header(msg, "EndPoints");
const gchar *trig_invite = sipmsg_find_header(msg, "TriggeredInvite");
const gchar *content_type = sipmsg_find_header(msg, "Content-Type");
const gchar *subject = sipmsg_find_header(msg, "Subject");
GSList *end_points = NULL;
struct sip_session *session;
struct sip_dialog *dialog;
const gchar *ms_text_format;
gboolean dont_delay = FALSE;
#ifdef HAVE_VV
if (g_str_has_prefix(content_type, "multipart/alternative")) {
sipe_mime_parts_foreach(content_type, msg->body, sipe_invite_mime_cb, msg);
/* Reload Content-Type to get type of the selected message part */
content_type = sipmsg_find_header(msg, "Content-Type");
}
#endif
if (g_str_has_prefix(content_type, "multipart/mixed")) {
sipe_mime_parts_foreach(content_type, msg->body, sipe_invite_mime_mixed_cb, msg);
/* Reload Content-Type to get type of the selected message part */
content_type = sipmsg_find_header(msg, "Content-Type");
}
/* Lync 2010 file transfer */
if (g_str_has_prefix(content_type, "application/ms-filetransfer+xml")) {
sip_transport_response(sipe_private, msg, 488, "Not Acceptable Here", NULL);
return;
}
/* Invitation to join conference */
if (g_str_has_prefix(content_type, "application/ms-conf-invite+xml")) {
process_incoming_invite_conf(sipe_private, msg);
return;
}
#ifdef HAVE_VV
/* Invitation to audio call */
if (msg->body && strstr(msg->body, "m=audio")) {
process_incoming_invite_call(sipe_private, msg);
return;
}
#endif
/* Only accept text invitations */
if (msg->body && !(strstr(msg->body, "m=message") || strstr(msg->body, "m=x-ms-message"))) {
sip_transport_response(sipe_private, msg, 501, "Not implemented", NULL);
return;
}
// TODO There *must* be a better way to clean up the To header to add a tag...
SIPE_DEBUG_INFO_NOFORMAT("Adding a Tag to the To Header on Invite Request...");
oldHeader = sipmsg_find_header(msg, "To");
newTag = gentag();
newHeader = g_strdup_printf("%s;tag=%s", oldHeader, newTag);
g_free(newTag);
sipmsg_remove_header_now(msg, "To");
sipmsg_add_header_now(msg, "To", newHeader);
g_free(newHeader);
if (end_points_hdr) {
end_points = sipmsg_parse_endpoints_header(end_points_hdr);
if (g_slist_length(end_points) > 2) {
is_multiparty = TRUE;
}
}
if (trig_invite && !g_ascii_strcasecmp(trig_invite, "TRUE")) {
is_multiparty = TRUE;
}
/* Multiparty session */
session = sipe_session_find_chat_by_callid(sipe_private, callid);
if (is_multiparty) {
if (session) {
if (session->chat_session) {
/* Update roster manager for existing multiparty session */
if (roster_manager)
sipe_chat_set_roster_manager(session, roster_manager);
} else {
gchar *chat_title = sipe_chat_get_name();
/* Convert IM session to multiparty session */
g_free(session->with);
session->with = NULL;
was_multiparty = FALSE;
session->chat_session = sipe_chat_create_session(SIPE_CHAT_TYPE_MULTIPARTY,
roster_manager,
chat_title);
g_free(chat_title);
}
} else {
/* New multiparty session */
session = sipe_session_add_chat(sipe_private,
NULL,
TRUE,
roster_manager);
}
/* Create chat */
if (!session->chat_session->backend) {
gchar *self = sip_uri_self(sipe_private);
session->chat_session->backend = sipe_backend_chat_create(SIPE_CORE_PUBLIC,
session->chat_session,
session->chat_session->title,
self);
g_free(self);
}
}
/* IM session */
from = parse_from(sipmsg_find_header(msg, "From"));
if (!session)
session = sipe_session_find_or_add_im(sipe_private, from);
/* session is now initialized */
g_free(session->callid);
session->callid = g_strdup(callid);
if (is_multiparty && end_points) {
gchar *to = parse_from(sipmsg_find_header(msg, "To"));
GSList *entry = end_points;
while (entry) {
struct sipendpoint *end_point = entry->data;
entry = entry->next;
if (!g_ascii_strcasecmp(from, end_point->contact) ||
!g_ascii_strcasecmp(to, end_point->contact))
continue;
dialog = sipe_dialog_find(session, end_point->contact);
if (dialog) {
g_free(dialog->theirepid);
dialog->theirepid = end_point->epid;
end_point->epid = NULL;
} else {
dialog = sipe_dialog_add(session);
dialog->callid = g_strdup(session->callid);
dialog->with = end_point->contact;
end_point->contact = NULL;
dialog->theirepid = end_point->epid;
end_point->epid = NULL;
just_joined = TRUE;
/* send triggered INVITE */
sipe_im_invite(sipe_private, session, dialog->with, NULL, NULL, NULL, TRUE);
}
}
g_free(to);
}
if (end_points) {
GSList *entry = end_points;
while (entry) {
struct sipendpoint *end_point = entry->data;
entry = entry->next;
g_free(end_point->contact);
g_free(end_point->epid);
g_free(end_point);
}
g_slist_free(end_points);
}
dialog = sipe_dialog_find(session, from);
if (dialog) {
sipe_im_cancel_dangling(sipe_private, session, dialog, from,
sipe_im_reenqueue_unconfirmed);
/* dialog is no longer valid */
} else {
just_joined = TRUE;
}
dialog = sipe_dialog_add(session);
dialog->with = g_strdup(from);
dialog->callid = g_strdup(session->callid);
dialog->is_established = TRUE;
sipe_dialog_parse(dialog, msg, FALSE);
if (is_multiparty && !was_multiparty) {
/* add current IM counterparty to chat */
sipe_backend_chat_add(session->chat_session->backend,
sipe_dialog_first(session)->with,
FALSE);
}
/* add inviting party to chat */
if (just_joined && session->chat_session) {
sipe_backend_chat_add(session->chat_session->backend,
from,
TRUE);
}
if (!is_multiparty && subject)
sipe_im_topic(sipe_private, session, subject);
/* ms-text-format: text/plain; charset=UTF-8;msgr=WAAtAE0...DIADQAKAA0ACgA;ms-body=SGk= */
/* This used only in 2005 official client, not 2007 or Reuters.
Disabled for most cases as interfering with audit of messages which only is applied to regular MESSAGEs.
Only enabled for 2005 multiparty chats as otherwise the first message got lost completely.
*/
/* also enabled for 2005 file transfer. Didn't work otherwise. */
ms_text_format = sipmsg_find_header(msg, "ms-text-format");
if (is_multiparty ||
(ms_text_format && g_str_has_prefix(ms_text_format, "text/x-msmsgsinvite")) )
{
if (ms_text_format) {
if (g_str_has_prefix(ms_text_format, "text/x-msmsgsinvite"))
{
dont_delay = TRUE;
}
else if (g_str_has_prefix(ms_text_format, "text/plain") || g_str_has_prefix(ms_text_format, "text/html"))
{
/* please do not optimize logic inside as this code may be re-enabled for other cases */
gchar *html = get_html_message(ms_text_format, NULL);
if (html) {
if (is_multiparty) {
sipe_backend_chat_message(SIPE_CORE_PUBLIC,
session->chat_session->backend,
from,
0,
html);
} else {
sipe_backend_im_message(SIPE_CORE_PUBLIC,
from,
html);
}
g_free(html);
sipmsg_add_header(msg, "Supported", "ms-text-format"); /* accepts received message */
dont_delay = TRUE;
}
}
}
}
g_free(from);
sipmsg_add_header(msg, "Supported", "com.microsoft.rtc-multiparty");
if (dont_delay || !SIPE_CORE_PRIVATE_FLAG_IS(MPOP)) {
send_invite_response(sipe_private, msg);
} else {
delayed_invite_response(sipe_private, msg, session->callid);
}
}
