1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
typedef enum {
REGISTER,
INVITE,
ACK,
BYE,
CANCEL,
OPTIONS,
NOTIFY,
SUBSCRIBE,
INFO,
MESSAGE,
UPDATE,
REFER
} SipMethod;
typedef enum {
AMD5,
} SipAuthAlgo;
/* rfc3261 § 21 - Response Codes */
typedef enum {
/* 1xx Provisional */
Trying = 100,
Ringing = 180,
CallForwarded = 181,
Queued = 182,
SessionProgress = 183,
/* 2xx Successful */
OK = 200,
/* 3xx Redirection */
MultiChoice = 300,
MovedPerm = 301,
MovedTemp = 302,
UseProxy = 305,
AltService = 380,
/* 4xx Request Failure */
BadRequest = 400,
Unauthorized = 401,
PaymentRequired = 402,
Forbidden = 403,
NotFound = 404,
MethodNotAllowed = 405,
RequestNotAcceptable = 406,
ProxyAuthRequired = 407,
RequestTimeout = 408,
Gone = 410,
EntityTooLarge = 413,
URITooLong = 414,
UnsupportedMedia = 415,
UnsupportedURIScheme = 416,
BadExtension = 420,
ExtensionRequired = 421,
IntervalTooBrief = 423,
TempUnavailable = 480,
CallDoesNotExist = 481,
LoopDetected = 482,
TooManyHops = 483,
AddressIncomplete = 484,
Ambiguous = 485,
BusyHere = 486,
RequestTerminated = 487,
NotAcceptableHere = 488,
RequestPending = 491,
Undecipherable = 493,
/* 5xx Server Failure */
InternalError = 500,
NotImplemented = 501,
BadGateway = 502,
ServiceUnavailable = 503,
ServerTimeout = 504,
VersionNotSupported = 505,
MessageTooLarge = 513,
/* 6xx Global Failures */
BusyEverywhere = 600,
Decline = 603,
DoesNotExistAnywhere = 604,
NotAcceptable = 606,
} SipStatus;
typedef struct Hdr Hdr;
typedef struct Hdrtab Hdrtab;
typedef struct Sipmsg Sipmsg;
typedef struct Sip Sip;
struct Hdr
{
char *name;
char *value;
Hdr *next;
};
struct Hdrtab
{
Hdr *headers[13];
};
struct Sipmsg
{
Hdrtab;
struct {
char *algo;
char *realm;
char *nonce;
char *response;
} auth;
/* request */
SipMethod method;
char *uri;
/* response */
int code;
char *reason;
char *version;
ulong len;
char body[];
};
/* SIP UAC (see rfc3261 § 8.1, 12.1.2) */
struct Sip
{
int version;
NetConnInfo *nci;
int fd;
int (*reg)(Sip*, char*, char*);
};
#pragma varargck type "S" Sipmsg*
extern int debug;
|
