Concomitant control chain (CCC). More...

#include "msg.h"
#include "chain.h"
#include "../dlib/dlib.h"

Include dependency graph for chain.c:

Macros
#define	VERBOSE 0

Functions
static void	Chain_debug_msg (char FuncStr, int Op, int Branch, int Dir, ChainLink Info)
	Show debugging info.

ChainLink *	a_Chain_new (void)
	Create and initialize a new chain-link.

ChainLink *	a_Chain_link_new (ChainLink *AInfo, ChainFunction_t AFunc, int Direction, ChainFunction_t BFunc, int AtoB_branch, int BtoA_branch)
	Create a new link from module A to module B.

void	a_Chain_unlink (ChainLink *Info, int Direction)
	Unlink a previously used link.

int	a_Chain_fcb (int Op, ChainLink Info, void Data1, void *Data2)
	Issue the forward callback of the 'Info' link.

int	a_Chain_bcb (int Op, ChainLink Info, void Data1, void *Data2)
	Issue the backward callback of the 'Info' link.

int	a_Chain_bfcb (int Op, ChainLink Info, void Data1, void *Data2)
	Issue the backward callback of the 'Info' link and then the forward callback (used for OpAbort and OpStop).

DataBuf *	a_Chain_dbuf_new (void *buf, int size, int code)
	Allocate and initialize a new DataBuf structure.

int	a_Chain_check (char FuncStr, int Op, int Branch, int Dir, ChainLink Info)
	Check whether the CCC is operative.

Detailed Description

Concomitant control chain (CCC).

Theory and code by Jorge Arellano Cid

Definition in file chain.c.

Macro Definition Documentation

◆ VERBOSE

#define VERBOSE 0

Definition at line 20 of file chain.c.

Function Documentation

◆ a_Chain_bcb()

int a_Chain_bcb	(	int	Op,
		ChainLink *	Info,
		void *	Data1,
		void *	Data2
	)

Issue the backward callback of the 'Info' link.

Returns: 1 if OK, 0 if not operative.

Definition at line 126 of file chain.c.

References ChainLink::Bcb, ChainLink::BcbBranch, ChainLink::BcbInfo, BCK, CCC_Aborted, CCC_Ended, ChainLink::Flags, OpAbort, and OpEnd.

Referenced by a_Capi_ccc(), a_Chain_bfcb(), a_Dpi_ccc(), a_Http_ccc(), Http_connect_tls(), and Http_send_query().

◆ a_Chain_bfcb()

int a_Chain_bfcb	(	int	Op,
		ChainLink *	Info,
		void *	Data1,
		void *	Data2
	)

Issue the backward callback of the 'Info' link and then the forward callback (used for OpAbort and OpStop).

Returns: 1 if OK, 0 if not operative.

Definition at line 150 of file chain.c.

References a_Chain_bcb(), a_Chain_fcb(), ChainLink::Flags, OpAbort, and OpEnd.

Referenced by a_Http_ccc(), a_Http_connect_done(), Http_connect_tls(), and Http_dns_cb().

◆ a_Chain_check()

int a_Chain_check	(	char *	FuncStr,
		int	Op,
		int	Branch,
		int	Dir,
		ChainLink *	Info
	)

Check whether the CCC is operative.

Also used to hook debug information.

Returns: 1 if ready to use, 0 if not operative.

Definition at line 186 of file chain.c.

References CCC_Aborted, CCC_Ended, Chain_debug_msg(), ChainLink::Flags, and MSG_WARN.

Referenced by a_Capi_ccc(), a_Dpi_ccc(), a_Http_ccc(), and a_IO_ccc().

◆ a_Chain_dbuf_new()

DataBuf * a_Chain_dbuf_new	(	void *	buf,
		int	size,
		int	code
	)

Allocate and initialize a new DataBuf structure.

Definition at line 171 of file chain.c.

References DataBuf::Buf, DataBuf::Code, dNew, and DataBuf::Size.

Referenced by a_Capi_dpi_send_data(), a_IO_ccc(), Capi_conn_resume(), Dpi_parse_token(), Http_connect_tls(), and Http_send_query().

◆ a_Chain_fcb()

int a_Chain_fcb	(	int	Op,
		ChainLink *	Info,
		void *	Data1,
		void *	Data2
	)

Issue the forward callback of the 'Info' link.

Returns: 1 if OK, 0 if not operative.

Definition at line 103 of file chain.c.

References CCC_Aborted, CCC_Ended, ChainLink::Fcb, ChainLink::FcbBranch, ChainLink::FcbInfo, ChainLink::Flags, FWD, OpAbort, and OpEnd.

Referenced by a_Chain_bfcb(), a_Dpi_ccc(), a_Http_ccc(), a_IO_ccc(), and Dpi_parse_token().

◆ a_Chain_link_new()

ChainLink * a_Chain_link_new	(	ChainLink *	AInfo,
		ChainFunction_t	AFunc,
		int	Direction,
		ChainFunction_t	BFunc,
		int	AtoB_branch,
		int	BtoA_branch
	)

Create a new link from module A to module B.

Parameters

Direction	tells whether to make a forward or backward link. The link from 'A' to 'B' has `Direction` direction. The main flow of information names the FWD direction.
AtoB_branch	branch on which 'B' receives communications from 'A'
BtoA_branch	branch on which 'A' receives communications from 'B'

Definition at line 55 of file chain.c.

References a_Chain_new(), ChainLink::Bcb, ChainLink::BcbBranch, ChainLink::BcbInfo, BCK, ChainLink::Fcb, ChainLink::FcbBranch, and ChainLink::FcbInfo.

Referenced by a_Capi_ccc(), a_Dpi_ccc(), and a_Http_ccc().

◆ a_Chain_new()

ChainLink * a_Chain_new ( void )

Create and initialize a new chain-link.

Definition at line 42 of file chain.c.

References dNew0.

Referenced by a_Capi_dpi_send_data(), a_Capi_open_url(), and a_Chain_link_new().

◆ a_Chain_unlink()

void a_Chain_unlink	(	ChainLink *	Info,
		int	Direction
	)

Unlink a previously used link.

Parameters

Direction tells whether to unlink the forward or backward link.

Definition at line 86 of file chain.c.

References ChainLink::Bcb, ChainLink::BcbBranch, ChainLink::BcbInfo, ChainLink::Fcb, ChainLink::FcbBranch, ChainLink::FcbInfo, and FWD.

◆ Chain_debug_msg()

static void Chain_debug_msg	(	char *	FuncStr,
		int	Op,
		int	Branch,
		int	Dir,
		ChainLink *	Info
	)

static

Show debugging info.

Definition at line 36 of file chain.c.

Referenced by a_Chain_check().

Macros

Functions