dtls.h

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#ifndef JANUS_DTLS_H
#define JANUS_DTLS_H

#include <inttypes.h>
#include <glib.h>

#include "rtp.h"
#include "rtpsrtp.h"
#include "sctp.h"
#include "refcount.h"
#include "dtls-bio.h"

const char *janus_get_ssl_version(void);

gint janus_dtls_srtp_init(const char *server_pem, const char *server_key, const char *password,
        const char *ciphers, guint16 timeout, gboolean rsa_private_key, gboolean accept_selfsigned);
void janus_dtls_srtp_cleanup(void);
gchar *janus_dtls_get_local_fingerprint(void);
gboolean janus_dtls_are_selfsigned_certs_ok(void);


typedef enum janus_dtls_role {
        JANUS_DTLS_ROLE_ACTPASS = -1,
        JANUS_DTLS_ROLE_SERVER,
        JANUS_DTLS_ROLE_CLIENT,
} janus_dtls_role;

typedef enum janus_dtls_state {
        JANUS_DTLS_STATE_FAILED = -1,
        JANUS_DTLS_STATE_CREATED,
        JANUS_DTLS_STATE_TRYING,
        JANUS_DTLS_STATE_CONNECTED,
} janus_dtls_state;

typedef struct janus_dtls_srtp {
        void *component;
        janus_dtls_role dtls_role;
        janus_dtls_state dtls_state;
        gint64 dtls_started;
        gint64 dtls_connected;
        SSL *ssl;
        BIO *read_bio;
        BIO *write_bio;
        gint srtp_valid;
        gint srtp_profile;
        srtp_t srtp_in;
        srtp_t srtp_out;
        srtp_policy_t remote_policy;
        srtp_policy_t local_policy;
        int ready;
        int retransmissions;
#ifdef HAVE_SCTP

        janus_sctp_association *sctp;
#endif

        volatile gint destroyed;
        janus_refcount ref;
} janus_dtls_srtp;


janus_dtls_srtp *janus_dtls_srtp_create(void *component, janus_dtls_role role);
void janus_dtls_srtp_handshake(janus_dtls_srtp *dtls);
int janus_dtls_srtp_create_sctp(janus_dtls_srtp *dtls);
void janus_dtls_srtp_incoming_msg(janus_dtls_srtp *dtls, char *buf, uint16_t len);
void janus_dtls_srtp_send_alert(janus_dtls_srtp *dtls);
void janus_dtls_srtp_destroy(janus_dtls_srtp *dtls);

void janus_dtls_callback(const SSL *ssl, int where, int ret);

int janus_dtls_verify_callback(int preverify_ok, X509_STORE_CTX *ctx);

#ifdef HAVE_SCTP

void janus_dtls_sctp_data_ready(janus_dtls_srtp *dtls);

void janus_dtls_wrap_sctp_data(janus_dtls_srtp *dtls, char *label, char *protocol, gboolean textdata, char *buf, int len);

int janus_dtls_send_sctp_data(janus_dtls_srtp *dtls, char *buf, int len);

void janus_dtls_notify_sctp_data(janus_dtls_srtp *dtls, char *label, char *protocol, gboolean textdata, char *buf, int len);
#endif

gboolean janus_dtls_retry(gpointer stack);

const gchar *janus_get_dtls_srtp_state(janus_dtls_state state);

const gchar *janus_get_dtls_srtp_role(janus_dtls_role role);

const gchar *janus_get_dtls_srtp_profile(int profile);

gboolean janus_is_dtls(char *buf);

#endif