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RRTcodebaseC

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}
// automatically prepare normal messages
if (msg->state!=DC_STATE_OUT_PREPARING) {
if (!prepare_msg_common(context, chat_id, msg)) {
return 0;
};
}
// update message state of separately prepared messages
else {
if (chat_id!=0 && chat_id!=msg->chat_id) {
return 0;
}
dc_update_msg_state(context, msg->id, DC_STATE_OUT_PENDING);
}
// create message file and submit SMTP job
if (!dc_job_send_msg(context, msg->id)) {
return 0;
}
context->cb(context, DC_EVENT_MSGS_CHANGED, msg->chat_id, msg->id);
if (dc_param_exists(msg->param, DC_PARAM_SET_LATITUDE)) {
context->cb(context, DC_EVENT_LOCATION_CHANGED, DC_CONTACT_ID_SELF, 0);
}
// recursively send any forwarded copies
if (!chat_id) {
char* forwards = dc_param_get(msg->param, DC_PARAM_PREP_FORWARDS, NULL);
if (forwards) {
char* p = forwards;
while (*p) {
int32_t id = strtol(p, &p, 10);
if (!id) break; // avoid hanging if user tampers with db
dc_msg_t* copy = dc_get_msg(context, id);
if (copy) {
dc_send_msg(context, 0, copy);
}
dc_msg_unref(copy);
}
dc_param_set(msg->param, DC_PARAM_PREP_FORWARDS, NULL);
dc_msg_save_param_to_disk(msg);
}
free(forwards);
}
return msg->id;
}
/**
* Send a simple text message a given chat.
*
* Sends the event #DC_EVENT_MSGS_CHANGED on succcess.
* However, this does not imply, the message really reached the recipient -
* sending may be delayed eg. due to network problems. However, from your
* view, you're done with the message. Sooner or later it will find its way.
*
* See also dc_send_msg().
*
* @memberof dc_context_t
* @param context The context object as returned from dc_context_new().
* @param chat_id Chat ID to send the text message to.
* @param text_to_send Text to send to the chat defined by the chat ID.
* Passing an empty text here causes an empty text to be sent,
* it's up to the caller to handle this if undesired.
* Passing NULL as the text causes the function to return 0.
* @return The ID of the message that is about being sent.
*/
uint32_t dc_send_text_msg(dc_context_t* context, uint32_t chat_id, const char* text_to_send)
{
dc_msg_t* msg = dc_msg_new(context, DC_MSG_TEXT);
uint32_t ret = 0;
if (context==NULL || context->magic!=DC_CONTEXT_MAGIC || chat_id<=DC_CHAT_ID_LAST_SPECIAL || text_to_send==NULL) {
goto cleanup;
}
msg->text = dc_strdup(text_to_send);
ret = dc_send_msg(context, chat_id, msg);
cleanup:
dc_msg_unref(msg);
return ret;
}
/*
* Log a device message.
* Such a message is typically shown in the "middle" of the chat, the user can check this using dc_msg_is_info().
* Texts are typically "Alice has added Bob to the group" or "Alice fingerprint verified."
*/
void dc_add_device_msg(dc_context_t* context, uint32_t chat_id, const char* text)
{
uint32_t msg_id = 0;
sqlite3_stmt* stmt = NULL;
char* rfc724_mid = dc_create_outgoing_rfc724_mid(NULL, "@device");
if (context==NULL || context->magic!=DC_CONTEXT_MAGIC || text==NULL) {