Exemple #1
0
void TorControlConnection::eventcb(struct bufferevent *bev, short what, void *ctx)
{
    TorControlConnection *self = (TorControlConnection*)ctx;
    if (what & BEV_EVENT_CONNECTED) {
        LogPrint("tor", "tor: Successfully connected!\n");
        self->connected(*self);
    } else if (what & (BEV_EVENT_EOF|BEV_EVENT_ERROR)) {
        if (what & BEV_EVENT_ERROR)
            LogPrint("tor", "tor: Error connecting to Tor control socket\n");
        else
            LogPrint("tor", "tor: End of stream\n");
        self->Disconnect();
        self->disconnected(*self);
    }
}
Exemple #2
0
void TorControlConnection::eventcb(struct bufferevent *bev, short what, void *ctx)
{
    TorControlConnection *self = static_cast<TorControlConnection*>(ctx);
    if (what & BEV_EVENT_CONNECTED) {
        LogPrint(BCLog::TOR, "tor: Successfully connected!\n");
        self->connected(*self);
    } else if (what & (BEV_EVENT_EOF|BEV_EVENT_ERROR)) {
        if (what & BEV_EVENT_ERROR) {
            LogPrint(BCLog::TOR, "tor: Error connecting to Tor control socket\n");
        } else {
            LogPrint(BCLog::TOR, "tor: End of stream\n");
        }
        self->Disconnect();
        self->disconnected(*self);
    }
}
Exemple #3
0
void TorControlConnection::readcb(struct bufferevent *bev, void *ctx)
{
    TorControlConnection *self = (TorControlConnection*)ctx;
    struct evbuffer *input = bufferevent_get_input(bev);
    size_t n_read_out = 0;
    char *line;
    assert(input);
    //  If there is not a whole line to read, evbuffer_readln returns NULL
    while((line = evbuffer_readln(input, &n_read_out, EVBUFFER_EOL_CRLF)) != NULL)
    {
        std::string s(line, n_read_out);
        free(line);
        if (s.size() < 4) // Short line
            continue;
        // <status>(-|+| )<data><CRLF>
        self->message.code = atoi(s.substr(0,3));
        self->message.lines.push_back(s.substr(4));
        char ch = s[3]; // '-','+' or ' '
        if (ch == ' ') {
            // Final line, dispatch reply and clean up
            if (self->message.code >= 600) {
                // Dispatch async notifications to async handler
                // Synchronous and asynchronous messages are never interleaved
                self->async_handler(*self, self->message);
            } else {
                if (!self->reply_handlers.empty()) {
                    // Invoke reply handler with message
                    self->reply_handlers.front()(*self, self->message);
                    self->reply_handlers.pop_front();
                } else {
                    LogPrint("tor", "tor: Received unexpected sync reply %i\n", self->message.code);
                }
            }
            self->message.Clear();
        }
    }
    //  Check for size of buffer - protect against memory exhaustion with very long lines
    //  Do this after evbuffer_readln to make sure all full lines have been
    //  removed from the buffer. Everything left is an incomplete line.
    if (evbuffer_get_length(input) > MAX_LINE_LENGTH) {
        LogPrintf("tor: Disconnecting because MAX_LINE_LENGTH exceeded\n");
        self->Disconnect();
    }
}