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dtls.h
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1 
15 #ifndef JANUS_DTLS_H
16 #define JANUS_DTLS_H
17 
18 #include <inttypes.h>
19 #include <glib.h>
20 
21 #include "rtp.h"
22 #include "rtpsrtp.h"
23 #include "sctp.h"
24 #include "refcount.h"
25 #include "dtls-bio.h"
26 
29 const char *janus_get_ssl_version(void);
30 
40 gint janus_dtls_srtp_init(const char *server_pem, const char *server_key, const char *password,
41  const char *ciphers, guint16 timeout, gboolean rsa_private_key, gboolean accept_selfsigned);
43 void janus_dtls_srtp_cleanup(void);
48 
49 
51 typedef enum janus_dtls_role {
56 
58 typedef enum janus_dtls_state {
64 
66 typedef struct janus_dtls_srtp {
68  void *pc;
74  gint64 dtls_started;
78  SSL *ssl;
80  BIO *read_bio;
82  BIO *write_bio;
84  gint srtp_valid;
88  srtp_t srtp_in;
90  srtp_t srtp_out;
92  srtp_policy_t remote_policy;
94  srtp_policy_t local_policy;
96  int ready;
99 #ifdef HAVE_SCTP
100 
101  janus_sctp_association *sctp;
102 #endif
103 
104  volatile gint destroyed;
108 
109 
129 void janus_dtls_srtp_incoming_msg(janus_dtls_srtp *dtls, char *buf, uint16_t len);
136 
141 void janus_dtls_callback(const SSL *ssl, int where, int ret);
142 
147 int janus_dtls_verify_callback(int preverify_ok, X509_STORE_CTX *ctx);
148 
149 #ifdef HAVE_SCTP
150 
152 void janus_dtls_sctp_data_ready(janus_dtls_srtp *dtls);
153 
161 void janus_dtls_wrap_sctp_data(janus_dtls_srtp *dtls, char *label, char *protocol, gboolean textdata, char *buf, int len);
162 
168 int janus_dtls_send_sctp_data(janus_dtls_srtp *dtls, char *buf, int len);
169 
177 void janus_dtls_notify_sctp_data(janus_dtls_srtp *dtls, char *label, char *protocol, gboolean textdata, char *buf, int len);
178 #endif
179 
184 gboolean janus_dtls_retry(gpointer stack);
185 
189 const gchar *janus_get_dtls_srtp_state(janus_dtls_state state);
190 
194 const gchar *janus_get_dtls_srtp_role(janus_dtls_role role);
195 
199 const gchar *janus_get_dtls_srtp_profile(int profile);
200 
203 gboolean janus_is_dtls(char *buf);
204 
205 #endif
JANUS_DTLS_ROLE_SERVER
@ JANUS_DTLS_ROLE_SERVER
Definition: dtls.h:53
janus_get_ssl_version
const char * janus_get_ssl_version(void)
Helper method to return info on the crypto library and its version.
Definition: dtls.c:365
janus_dtls_srtp::srtp_in
srtp_t srtp_in
libsrtp context for incoming SRTP packets
Definition: dtls.h:88
janus_dtls_srtp_destroy
void janus_dtls_srtp_destroy(janus_dtls_srtp *dtls)
Destroy a janus_dtls_srtp instance.
Definition: dtls.c:954
janus_dtls_srtp::ready
int ready
Whether this DTLS stack is now ready to be used for messages as well (e.g., SCTP encapsulation)
Definition: dtls.h:96
janus_dtls_srtp_create
janus_dtls_srtp * janus_dtls_srtp_create(void *pc, janus_dtls_role role)
Create a janus_dtls_srtp instance.
Definition: dtls.c:540
janus_dtls_verify_callback
int janus_dtls_verify_callback(int preverify_ok, X509_STORE_CTX *ctx)
DTLS certificate verification callback (http://www.openssl.org/docs/ssl/SSL_CTX_set_verify....
Definition: dtls.c:995
janus_dtls_srtp::write_bio
BIO * write_bio
Write BIO (outgoing DTLS data)
Definition: dtls.h:82
janus_dtls_srtp_handshake
void janus_dtls_srtp_handshake(janus_dtls_srtp *dtls)
Start a DTLS handshake.
Definition: dtls.c:614
JANUS_DTLS_STATE_TRYING
@ JANUS_DTLS_STATE_TRYING
Definition: dtls.h:61
janus_dtls_srtp::read_bio
BIO * read_bio
Read BIO (incoming DTLS data)
Definition: dtls.h:80
JANUS_DTLS_STATE_CONNECTED
@ JANUS_DTLS_STATE_CONNECTED
Definition: dtls.h:62
JANUS_DTLS_STATE_FAILED
@ JANUS_DTLS_STATE_FAILED
Definition: dtls.h:59
janus_get_dtls_srtp_role
const gchar * janus_get_dtls_srtp_role(janus_dtls_role role)
Helper method to get a string representation of a DTLS role.
Definition: dtls.c:44
JANUS_DTLS_ROLE_CLIENT
@ JANUS_DTLS_ROLE_CLIENT
Definition: dtls.h:54
janus_dtls_srtp::destroyed
volatile gint destroyed
Atomic flag to check if this instance has been destroyed.
Definition: dtls.h:104
janus_refcount
Definition: refcount.h:78
janus_dtls_srtp::local_policy
srtp_policy_t local_policy
libsrtp policy for outgoing SRTP packets
Definition: dtls.h:94
janus_dtls_srtp::pc
void * pc
Opaque pointer to the WebRTC PeerConnection this DTLS-SRTP context belongs to.
Definition: dtls.h:68
sctp.h
SCTP processing for data channels (headers)
janus_dtls_srtp::dtls_connected
gint64 dtls_connected
Monotonic time of when the DTLS state has switched to connected.
Definition: dtls.h:76
janus_dtls_role
janus_dtls_role
DTLS roles.
Definition: dtls.h:51
janus_dtls_srtp_create_sctp
int janus_dtls_srtp_create_sctp(janus_dtls_srtp *dtls)
Create an SCTP association, for data channels.
Definition: dtls.c:633
janus_dtls_srtp::ssl
SSL * ssl
SSL context used for DTLS for this component.
Definition: dtls.h:78
janus_dtls_srtp::remote_policy
srtp_policy_t remote_policy
libsrtp policy for incoming SRTP packets
Definition: dtls.h:92
janus_get_dtls_srtp_profile
const gchar * janus_get_dtls_srtp_profile(int profile)
Helper method to get a string representation of an SRTP profile.
Definition: dtls.c:58
janus_dtls_srtp_incoming_msg
void janus_dtls_srtp_incoming_msg(janus_dtls_srtp *dtls, char *buf, uint16_t len)
Handle an incoming DTLS message.
Definition: dtls.c:657
janus_dtls_srtp::retransmissions
int retransmissions
The number of retransmissions that have occurred for this DTLS instance so far.
Definition: dtls.h:98
janus_dtls_retry
gboolean janus_dtls_retry(gpointer stack)
DTLS retransmission timer.
Definition: dtls.c:1065
janus_dtls_srtp::dtls_started
gint64 dtls_started
Monotonic time of when the DTLS handhake has started.
Definition: dtls.h:74
janus_dtls_srtp::srtp_out
srtp_t srtp_out
libsrtp context for outgoing SRTP packets
Definition: dtls.h:90
janus_dtls_srtp_cleanup
void janus_dtls_srtp_cleanup(void)
Method to cleanup DTLS stuff before exiting.
Definition: dtls.c:521
janus_dtls_are_selfsigned_certs_ok
gboolean janus_dtls_are_selfsigned_certs_ok(void)
Method to check whether DTLS self-signed certificates are ok (default) or not.
Definition: dtls.c:116
rtp.h
RTP processing (headers)
janus_dtls_srtp
struct janus_dtls_srtp janus_dtls_srtp
Janus DTLS-SRTP handle.
janus_dtls_get_local_fingerprint
gchar * janus_dtls_get_local_fingerprint(void)
Method to return a string representation (SHA-256) of the certificate fingerprint.
Definition: dtls.c:130
janus_dtls_callback
void janus_dtls_callback(const SSL *ssl, int where, int ret)
DTLS alert callback (http://www.openssl.org/docs/ssl/SSL_CTX_set_info_callback.html)
Definition: dtls.c:970
janus_dtls_srtp
Janus DTLS-SRTP handle.
Definition: dtls.h:66
janus_dtls_state
janus_dtls_state
DTLS state.
Definition: dtls.h:58
janus_dtls_srtp_send_alert
void janus_dtls_srtp_send_alert(janus_dtls_srtp *dtls)
Send an alert on a janus_dtls_srtp instance.
Definition: dtls.c:943
janus_dtls_srtp::dtls_role
janus_dtls_role dtls_role
DTLS role of the server for this stream: 1=client, 0=server.
Definition: dtls.h:70
JANUS_DTLS_STATE_CREATED
@ JANUS_DTLS_STATE_CREATED
Definition: dtls.h:60
refcount.h
Reference counter mechanism.
janus_get_dtls_srtp_state
const gchar * janus_get_dtls_srtp_state(janus_dtls_state state)
Helper method to get a string representation of a Janus DTLS state.
Definition: dtls.c:28
janus_dtls_srtp_init
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)
DTLS stuff initialization.
Definition: dtls.c:370
rtpsrtp.h
SRTP definitions (headers)
janus_dtls_srtp::srtp_valid
gint srtp_valid
Whether SRTP has been correctly set up for this component or not.
Definition: dtls.h:84
JANUS_DTLS_ROLE_ACTPASS
@ JANUS_DTLS_ROLE_ACTPASS
Definition: dtls.h:52
dtls-bio.h
OpenSSL BIO agent writer.
janus_dtls_srtp::dtls_state
janus_dtls_state dtls_state
DTLS state of this component: -1=failed, 0=nothing, 1=trying, 2=connected.
Definition: dtls.h:72
janus_dtls_srtp::ref
janus_refcount ref
Reference counter for this instance.
Definition: dtls.h:106
janus_dtls_srtp::srtp_profile
gint srtp_profile
The SRTP profile currently in use.
Definition: dtls.h:86
janus_is_dtls
gboolean janus_is_dtls(char *buf)
Helper method to demultiplex DTLS from other protocols.
Definition: dtls.c:100