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Minor IAX2 fixes, add incomplete-but-very-basically-functional IAX2 encryption

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4595 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2004-12-29 23:02:21 +00:00
parent 5d2654205d
commit 90197dbbdc
4 changed files with 308 additions and 22 deletions
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19
channels/iax2.h
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@@ -117,11 +117,15 @@
#define IAX_IE_CALLINGTNS 40 /* Calling transit network select (u16) */
#define IAX_IE_SAMPLINGRATE 41 /* Supported sampling rates (u16) */
#define IAX_IE_CAUSECODE 42 /* Hangup cause (u8) */
#define IAX_IE_ENCRYPTION 43 /* Encryption format (u16) */
#define IAX_IE_ENCKEY 44 /* Encryption key (raw) */
#define IAX_AUTH_PLAINTEXT (1 << 0)
#define IAX_AUTH_MD5 (1 << 1)
#define IAX_AUTH_RSA (1 << 2)
#define IAX_ENCRYPT_AES128 (1 << 0)
#define IAX_META_TRUNK 1 /* Trunk meta-message */
#define IAX_META_VIDEO 2 /* Video frame */
@@ -145,11 +149,18 @@ struct ast_iax2_full_hdr {
unsigned int ts; /* 32-bit timestamp in milliseconds (from 1st transmission) */
unsigned char oseqno; /* Packet number (outgoing) */
unsigned char iseqno; /* Packet number (next incoming expected) */
char type; /* Frame type */
unsigned char type; /* Frame type */
unsigned char csub; /* Compressed subclass */
unsigned char iedata[0];
} __attribute__ ((__packed__));
/* Full frames are always delivered reliably */
struct ast_iax2_full_enc_hdr {
unsigned short scallno; /* Source call number -- high bit must be 1 */
unsigned short dcallno; /* Destination call number -- high bit is 1 if retransmission */
unsigned char encdata[0];
} __attribute__ ((__packed__));
/* Mini header is used only for voice frames -- delivered unreliably */
struct ast_iax2_mini_hdr {
unsigned short callno; /* Source call number -- high bit must be 0, rest must be non-zero */
@@ -159,6 +170,12 @@ struct ast_iax2_mini_hdr {
unsigned char data[0];
} __attribute__ ((__packed__));
/* Mini header is used only for voice frames -- delivered unreliably */
struct ast_iax2_mini_enc_hdr {
unsigned short callno; /* Source call number -- high bit must be 0, rest must be non-zero */
unsigned char encdata[0];
} __attribute__ ((__packed__));
struct ast_iax2_meta_hdr {
unsigned short zeros; /* Zeros field -- must be zero */
unsigned char metacmd; /* Meta command */