Segmentation fault on

[jonathan lyons]

Hello all,

I'm hoping you can help me with an issue.

I'm trying to use SASL to authenticate with an XMPP server (in a TLS encrypted session) . However, when I use the gsasl_step64() function my program segfaults.

Here is the area where it is segfaulting:

void xmpp_sasl::perform_authentication() {
    char buf[8192] = "";
    char *p;
    int rc;

    do {
        rc = gsasl_step64(session, buf, &p);

        if (rc == GSASL_NEEDS_MORE || rc == GSASL_OK) {
            this->connection->send_string(buf, 8192);
           free(p);
        }
        
        this->clear(buf, 1024);
        if (rc == GSASL_NEEDS_MORE) {
            this->connection->receive_string(buf, 8192);

        }
        
    } while (rc == GSASL_NEEDS_MORE);

I have isolated gsasl_step64 as the place where the fault occurs .  All of the client and session initialization(in different functions) appears to go just fine, so session seems like it is a valid pointer.

I know it is bad to use a fixed-size buffer, but it is just temporary..

has anyone else experienced this problem?

SIncerely,

Jonathan Lyons