udtlib.c File Reference

Library of UDT functions for SIP messages. More...

#include <stdio.h>
#include "../../library/lib.h"
#include "./sip-1.h"

Include dependency graph for udtlib.c:

Go to the source code of this file.

Macros
#define	isalphanum(c)   (((c) >= 97 && (c) <= 122) || ((c) >= 48 && (c) <= 57) || ((c) >= 65 && (c) <= 90))
#define	ishexdigit(c)   (((c) >= 48 && (c) <= 57) || ((c) >= 65 && (c) <= 70) || ((c) >= 97 && (c) <= 102))

Functions
void	u_Digit (callback_data *spData)
void	u_Digit1 (callback_data *spData)
void	u_DomainLabel (callback_data *spData)
	Evaluates the lower elements of a host name. More...
void	e_MessageBody (callback_data *spData)
	Evaluates the message body. More...
void	u_CRLF (callback_data *spData)
	Evaluates the line end character sequence. More...
void	u_LWS (callback_data *spData)
	Linear white space. White space with possible line breaks allowed. More...
void	e_SWS (callback_data *spData)
	Optional linear white space. (See u_LWS.) More...
void	u_WSP (callback_data *spData)
void	e_Alphanum0 (callback_data *spData)
void	u_Alphanum1 (callback_data *spData)
void	u_alphanum (callback_data *spData)
void	u_ALPHA (callback_data *spData)
void	u_paramchar1 (callback_data *spData)
void	u_unreserved (callback_data *spData)
void	vSip1UdtCallbacks (void *vpParserCtx)
	Set the UDT callback functions for the SIP2.bnf grammar to their respective parse tree nodes. More...

Detailed Description

Library of UDT functions for SIP messages.

A few of the rules most often "hit" or evaluated during the parsing of a SIP message are have been hand written as UDTs. Those functions are defined here.

• CRLF - the line end
• LWS - linear white space - white space including line continuations
• SWS - optional linear white space
• message-body - zero or more octets, or bytes.
  • Note that this rule makes the alphabet character range for SIP messages 0-255. For this reason, XML, which forbids the characters 0-31, cannot be used as a delivery format for SIP messages.
• domainlabel - the elements of a host name
• toplabel - the last or top-most element of a host name

Definition in file udtlib.c.

Macro Definition Documentation

isalphanum

#define isalphanum

(

c

)

(((c) >= 97 && (c) <= 122) || ((c) >= 48 && (c) <= 57) || ((c) >= 65 && (c) <= 90))

Definition at line 48 of file udtlib.c.

ishexdigit

#define ishexdigit

(

c

)

(((c) >= 48 && (c) <= 57) || ((c) >= 65 && (c) <= 70) || ((c) >= 97 && (c) <= 102))

Definition at line 49 of file udtlib.c.

Function Documentation

e_Alphanum0()

void e_Alphanum0

(

callback_data *

spData

)

Definition at line 315 of file udtlib.c.

e_MessageBody()

void e_MessageBody

(

callback_data *

spData

)

Evaluates the message body.

Note that this function never fails and simply accepts the remainder of the input string, no matter what it is.

Parameters

spData

the callback_data passed to the function by the parser

Returns

none

Definition at line 195 of file udtlib.c.

e_SWS()

void e_SWS

(

callback_data *

spData

)

Optional linear white space. (See u_LWS.)

Parameters

spData

the callback_data passed to the function by the parser

Returns

none

Definition at line 296 of file udtlib.c.

u_ALPHA()

void u_ALPHA

(

callback_data *

spData

)

Definition at line 366 of file udtlib.c.

u_alphanum()

void u_alphanum

(

callback_data *

spData

)

Definition at line 354 of file udtlib.c.

u_Alphanum1()

void u_Alphanum1

(

callback_data *

spData

)

Definition at line 332 of file udtlib.c.

u_CRLF()

void u_CRLF

(

callback_data *

spData

)

Evaluates the line end character sequence.

CRLF = CR LF / LF / CR
The line end sequence has been modified from the original ABNF to be forgiving.

Parameters

spData

the callback_data passed to the function by the parser

Returns

none

Definition at line 207 of file udtlib.c.

u_Digit()

void u_Digit

(

callback_data *

spData

)

Definition at line 99 of file udtlib.c.

u_Digit1()

void u_Digit1

(

callback_data *

spData

)

Definition at line 111 of file udtlib.c.

u_DomainLabel()

void u_DomainLabel

(

callback_data *

spData

)

Evaluates the lower elements of a host name.

hostname = *( domainlabel "." &(alphanum/"-")) toplabel [ "." ] domainlabel = 1*alphanum *(1*"-" 1*alphanum)

eg. my.example.com
"my" and "example" are domain labels

Parameters

spData

the callback_data passed to the function by the parser

Returns

none

Definition at line 141 of file udtlib.c.

u_LWS()

void u_LWS

(

callback_data *

spData

)

Linear white space. White space with possible line breaks allowed.

LWS = [*WSP u_CRLF] 1*WSP

Parameters

spData

the callback_data passed to the function by the parser

Returns

none

Definition at line 238 of file udtlib.c.

u_paramchar1()

void u_paramchar1

(

callback_data *

spData

)

Definition at line 379 of file udtlib.c.

u_unreserved()

void u_unreserved

(

callback_data *

spData

)

Definition at line 409 of file udtlib.c.

u_WSP()

void u_WSP

(

callback_data *

spData

)

Definition at line 303 of file udtlib.c.

vSip1UdtCallbacks()

void vSip1UdtCallbacks

(

void *

vpParserCtx

)

Set the UDT callback functions for the SIP2.bnf grammar to their respective parse tree nodes.

Parameters

vpParserCtx

- the context of the parser

Returns

none

Definition at line 447 of file udtlib.c.