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RRTcodebaseC

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goto cleanup;
}
stmt = dc_sqlite3_prepare(context->sql,
"SELECT COUNT(*) FROM msgs WHERE rfc724_mid=?;");
sqlite3_bind_text(stmt, 1, rfc724_mid, -1, SQLITE_STATIC);
if (sqlite3_step(stmt)!=SQLITE_ROW) {
goto cleanup;
}
ret = sqlite3_column_int(stmt, 0);
cleanup:
sqlite3_finalize(stmt);
return ret;
}
/**
* Check, if the given Message-ID exists in the database.
* If not, the caller loads the message typically completely from the server and parses it.
* To avoid unnecessary dowonloads and parsing, we should even keep unuseful messages
* in the database (we can leave the other fields empty to save space).
*
* @private @memberof dc_context_t
*/
uint32_t dc_rfc724_mid_exists(dc_context_t* context, const char* rfc724_mid, char** ret_server_folder, uint32_t* ret_server_uid)
{
uint32_t ret = 0;
sqlite3_stmt* stmt = NULL;
if (context==NULL || rfc724_mid==NULL || rfc724_mid[0]==0) {
goto cleanup;
}
stmt = dc_sqlite3_prepare(context->sql,
"SELECT server_folder, server_uid, id FROM msgs WHERE rfc724_mid=?;");
sqlite3_bind_text(stmt, 1, rfc724_mid, -1, SQLITE_STATIC);
if (sqlite3_step(stmt)!=SQLITE_ROW) {
if (ret_server_folder) { *ret_server_folder = NULL; }
if (ret_server_uid) { *ret_server_uid = 0; }
goto cleanup;
}
if (ret_server_folder) { *ret_server_folder = dc_strdup((char*)sqlite3_column_text(stmt, 0)); }
if (ret_server_uid) { *ret_server_uid = sqlite3_column_int(stmt, 1); /* may be 0 */ }
ret = sqlite3_column_int(stmt, 2);
cleanup:
sqlite3_finalize(stmt);
return ret;
}
void dc_update_server_uid(dc_context_t* context, const char* rfc724_mid, const char* server_folder, uint32_t server_uid)
{
sqlite3_stmt* stmt = dc_sqlite3_prepare(context->sql,
"UPDATE msgs SET server_folder=?, server_uid=? WHERE rfc724_mid=?;"); /* we update by "rfc724_mid" instead of "id" as there may be several db-entries refering to the same "rfc724_mid" */
sqlite3_bind_text(stmt, 1, server_folder, -1, SQLITE_STATIC);
sqlite3_bind_int (stmt, 2, server_uid);
sqlite3_bind_text(stmt, 3, rfc724_mid, -1, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
/**
* Get a single message object of the type dc_msg_t.
* For a list of messages in a chat, see dc_get_chat_msgs()
* For a list or chats, see dc_get_chatlist()
*
* @memberof dc_context_t
* @param context The context as created by dc_context_new().
* @param msg_id The message ID for which the message object should be created.
* @return A dc_msg_t message object.
* On errors, NULL is returned.
* When done, the object must be freed using dc_msg_unref().
*/
dc_msg_t* dc_get_msg(dc_context_t* context, uint32_t msg_id)
{
int success = 0;
dc_msg_t* obj = dc_msg_new_untyped(context);
if (context==NULL || context->magic!=DC_CONTEXT_MAGIC) {
goto cleanup;
}
if (!dc_msg_load_from_db(obj, context, msg_id)) {
goto cleanup;
}
success = 1;
cleanup:
if (success) {
return obj;
}
else {
dc_msg_unref(obj);
return NULL;