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RRTcodebaseC

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stmt = NULL;
if (!success) {
// there are no messages of other users - use the first message if SELF as parent
stmt = dc_sqlite3_prepare(chat->context->sql,
"SELECT rfc724_mid, mime_in_reply_to, mime_references"
" FROM msgs"
" WHERE chat_id=? AND timestamp=(SELECT min(timestamp) FROM msgs WHERE chat_id=? AND from_id==?);");
sqlite3_bind_int (stmt, 1, chat->id);
sqlite3_bind_int (stmt, 2, chat->id);
sqlite3_bind_int (stmt, 3, DC_CONTACT_ID_SELF);
if (sqlite3_step(stmt)==SQLITE_ROW) {
*parent_rfc724_mid = dc_strdup((const char*)sqlite3_column_text(stmt, 0));
*parent_in_reply_to = dc_strdup((const char*)sqlite3_column_text(stmt, 1));
*parent_references = dc_strdup((const char*)sqlite3_column_text(stmt, 2));
success = 1;
}
}
cleanup:
sqlite3_finalize(stmt);
return success;
}
static uint32_t prepare_msg_raw(dc_context_t* context, dc_chat_t* chat, const dc_msg_t* msg, time_t timestamp)
{
char* parent_rfc724_mid = NULL;
char* parent_references = NULL;
char* parent_in_reply_to = NULL;
char* new_rfc724_mid = NULL;
char* new_references = NULL;
char* new_in_reply_to = NULL;
sqlite3_stmt* stmt = NULL;
uint32_t msg_id = 0;
uint32_t to_id = 0;
uint32_t location_id = 0;
if (!DC_CHAT_TYPE_CAN_SEND(chat->type)) {
dc_log_error(context, 0, "Cannot send to chat type #%i.", chat->type);
goto cleanup;
}
if (DC_CHAT_TYPE_IS_MULTI(chat->type) && !dc_is_contact_in_chat(context, chat->id, DC_CONTACT_ID_SELF)) {
dc_log_event(context, DC_EVENT_ERROR_SELF_NOT_IN_GROUP, 0,
"Cannot send message; self not in group.");
goto cleanup;
}
{
char* from = dc_sqlite3_get_config(context->sql, "configured_addr", NULL);
if (from==NULL) {
dc_log_error(context, 0, "Cannot send message, not configured.");
goto cleanup;
}
new_rfc724_mid = dc_create_outgoing_rfc724_mid(DC_CHAT_TYPE_IS_MULTI(chat->type)? chat->grpid : NULL, from);
free(from);
}
if (chat->type==DC_CHAT_TYPE_SINGLE)
{
stmt = dc_sqlite3_prepare(context->sql,
"SELECT contact_id FROM chats_contacts WHERE chat_id=?;");
sqlite3_bind_int(stmt, 1, chat->id);
if (sqlite3_step(stmt)!=SQLITE_ROW) {
dc_log_error(context, 0, "Cannot send message, contact for chat #%i not found.", chat->id);
goto cleanup;
}
to_id = sqlite3_column_int(stmt, 0);
sqlite3_finalize(stmt);
stmt = NULL;
}
else if (DC_CHAT_TYPE_IS_MULTI(chat->type))
{
if (dc_param_get_int(chat->param, DC_PARAM_UNPROMOTED, 0)==1) {
/* mark group as being no longer unpromoted */
dc_param_set(chat->param, DC_PARAM_UNPROMOTED, NULL);
dc_chat_update_param(chat);
}
}
/* check if we can guarantee E2EE for this message.
if we guarantee E2EE, and circumstances change
so that E2EE is no longer available at a later point (reset, changed settings),
we do not send the message out at all */
int do_guarantee_e2ee = 0;
int e2ee_enabled = dc_sqlite3_get_config_int(context->sql, "e2ee_enabled", DC_E2EE_DEFAULT_ENABLED);
if (e2ee_enabled && dc_param_get_int(msg->param, DC_PARAM_FORCE_PLAINTEXT, 0)==0)
{
int can_encrypt = 1, all_mutual = 1; /* be optimistic */
stmt = dc_sqlite3_prepare(context->sql,
"SELECT ps.prefer_encrypted, c.addr"
" FROM chats_contacts cc "
" LEFT JOIN contacts c ON cc.contact_id=c.id "
" LEFT JOIN acpeerstates ps ON c.addr=ps.addr "
" WHERE cc.chat_id=? " /* take care that this statement returns NULL rows if there is no peerstates for a chat member! */
" AND cc.contact_id>" DC_STRINGIFY(DC_CONTACT_ID_LAST_SPECIAL) ";"); /* for DC_PARAM_SELFTALK this statement does not return any row */
sqlite3_bind_int(stmt, 1, chat->id);
while (sqlite3_step(stmt)==SQLITE_ROW)
{