-
-#define MAX_SESSION_ID_ATTEMPTS 10
-static int generate_session_id(const SSL *ssl, unsigned char *id,
- unsigned int *id_len)
- {
- unsigned int count = 0;
- do {
- RAND_pseudo_bytes(id, *id_len);
- /* Prefix the session_id with the required prefix. NB: If our
- * prefix is too long, clip it - but there will be worse effects
- * anyway, eg. the server could only possibly create 1 session
- * ID (ie. the prefix!) so all future session negotiations will
- * fail due to conflicts. */
- memcpy(id, session_id_prefix,
- (strlen(session_id_prefix) < *id_len) ?
- strlen(session_id_prefix) : *id_len);
- }
- while(SSL_has_matching_session_id(ssl, id, *id_len) &&
- (++count < MAX_SESSION_ID_ATTEMPTS));
- if(count >= MAX_SESSION_ID_ATTEMPTS)
- return 0;
- return 1;
- }