capiutil.c

linux-2.6.15.6

/* $Id: capiutil.c,v 1.13.6.4 2001/09/23 22:24:33 kai Exp $
 *
 * CAPI 2.0 convert capi message to capi message struct
 *
 * From CAPI 2.0 Development Kit AVM 1995 (msg.c)
 * Rewritten for Linux 1996 by Carsten Paeth <[e-mail]>
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 */

#include <linux/module.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/config.h>
#include <linux/isdn/capiutil.h>

/* from CAPI2.0 DDK AVM Berlin GmbH */

#ifndef CONFIG_ISDN_DRV_AVMB1_VERBOSE_REASON
char *capi_info2str(u16 reason)
{
    return "..";
}
#else
char *capi_info2str(u16 reason)
{
    switch (reason) {

/*-- informative values (corresponding message was processed) -----*/
	case 0x0001:
	   return "NCPI not supported by current protocol, NCPI ignored";
	case 0x0002:
	   return "Flags not supported by current protocol, flags ignored";
	case 0x0003:
	   return "Alert already sent by another application";

/*-- error information concerning CAPI_REGISTER -----*/
	case 0x1001:
	   return "Too many applications";
	case 0x1002:
	   return "Logical block size too small, must be at least 128 Bytes";
	case 0x1003:
	   return "Buffer exceeds 64 kByte";
	case 0x1004:
	   return "Message buffer size too small, must be at least 1024 Bytes";
	case 0x1005:
	   return "Max. number of logical connections not supported";
	case 0x1006:
	   return "Reserved";
	case 0x1007:
	   return "The message could not be accepted because of an internal busy condition";
	case 0x1008:
	   return "OS resource error (no memory ?)";
	case 0x1009:
	   return "CAPI not installed";
	case 0x100A:
	   return "Controller does not support external equipment";
	case 0x100B:
	   return "Controller does only support external equipment";

/*-- error information concerning message exchange functions -----*/
	case 0x1101:
	   return "Illegal application number";
	case 0x1102:
	   return "Illegal command or subcommand or message length less than 12 bytes";
	case 0x1103:
	   return "The message could not be accepted because of a queue full condition !! The error code does not imply that CAPI cannot receive messages directed to another controller, PLCI or NCCI";
	case 0x1104:
	   return "Queue is empty";
	case 0x1105:
	   return "Queue overflow, a message was lost !! This indicates a configuration error. The only recovery from this error is to perform a CAPI_RELEASE";
	case 0x1106:
	   return "Unknown notification parameter";
	case 0x1107:
	   return "The Message could not be accepted because of an internal busy condition";
	case 0x1108:
	   return "OS Resource error (no memory ?)";
	case 0x1109:
	   return "CAPI not installed";
	case 0x110A:
	   return "Controller does not support external equipment";
	case 0x110B:
	   return "Controller does only support external equipment";

/*-- error information concerning resource / coding problems -----*/
	case 0x2001:
	   return "Message not supported in current state";
	case 0x2002:
	   return "Illegal Controller / PLCI / NCCI";
	case 0x2003:
	   return "Out of PLCI";
	case 0x2004:
	   return "Out of NCCI";
	case 0x2005:
	   return "Out of LISTEN";
	case 0x2006:
	   return "Out of FAX resources (protocol T.30)";
	case 0x2007:
	   return "Illegal message parameter coding";

/*-- error information concerning requested services  -----*/
	case 0x3001:
	   return "B1 protocol not supported";
	case 0x3002: 
	   return "B2 protocol not supported";
	case 0x3003: 
	   return "B3 protocol not supported";
	case 0x3004: 
	   return "B1 protocol parameter not supported";
	case 0x3005: 
	   return "B2 protocol parameter not supported";
	case 0x3006: 
	   return "B3 protocol parameter not supported";
	case 0x3007: 
	   return "B protocol combination not supported";
	case 0x3008: 
	   return "NCPI not supported";
	case 0x3009: 
	   return "CIP Value unknown";
	case 0x300A: 
	   return "Flags not supported (reserved bits)";
	case 0x300B: 
	   return "Facility not supported";
	case 0x300C: 
	   return "Data length not supported by current protocol";
	case 0x300D: 
	   return "Reset procedure not supported by current protocol";

/*-- informations about the clearing of a physical connection -----*/
	case 0x3301: 
	   return "Protocol error layer 1 (broken line or B-channel removed by signalling protocol)";
	case 0x3302: 
	   return "Protocol error layer 2";
	case 0x3303: 
	   return "Protocol error layer 3";
	case 0x3304: 
	   return "Another application got that call";
/*-- T.30 specific reasons -----*/
	case 0x3311: 
	   return "Connecting not successful (remote station is no FAX G3 machine)";
	case 0x3312: 
	   return "Connecting not successful (training error)";
	case 0x3313: 
	   return "Disconnected before transfer (remote station does not support transfer mode, e.g. resolution)";
	case 0x3314: 
	   return "Disconnected during transfer (remote abort)";
	case 0x3315: 
	   return "Disconnected during transfer (remote procedure error, e.g. unsuccessful repetition of T.30 commands)";
	case 0x3316: 
	   return "Disconnected during transfer (local tx data underrun)";
	case 0x3317: 
	   return "Disconnected during transfer (local rx data overflow)";
	case 0x3318: 
	   return "Disconnected during transfer (local abort)";
	case 0x3319: 
	   return "Illegal parameter coding (e.g. SFF coding error)";

/*-- disconnect causes from the network according to ETS 300 102-1/Q.931 -----*/
	case 0x3481: return "Unallocated (unassigned) number";
	case 0x3482: return "No route to specified transit network";
	case 0x3483: return "No route to destination";
	case 0x3486: return "Channel unacceptable";
	case 0x3487: 
	   return "Call awarded and being delivered in an established channel";
	case 0x3490: return "Normal call clearing";
	case 0x3491: return "User busy";
	case 0x3492: return "No user responding";
	case 0x3493: return "No answer from user (user alerted)";
	case 0x3495: return "Call rejected";
	case 0x3496: return "Number changed";
	case 0x349A: return "Non-selected user clearing";
	case 0x349B: return "Destination out of order";
	case 0x349C: return "Invalid number format";
	case 0x349D: return "Facility rejected";
	case 0x349E: return "Response to STATUS ENQUIRY";
	case 0x349F: return "Normal, unspecified";
	case 0x34A2: return "No circuit / channel available";
	case 0x34A6: return "Network out of order";
	case 0x34A9: return "Temporary failure";
	case 0x34AA: return "Switching equipment congestion";
	case 0x34AB: return "Access information discarded";
	case 0x34AC: return "Requested circuit / channel not available";
	case 0x34AF: return "Resources unavailable, unspecified";
	case 0x34B1: return "Quality of service unavailable";
	case 0x34B2: return "Requested facility not subscribed";
	case 0x34B9: return "Bearer capability not authorized";
	case 0x34BA: return "Bearer capability not presently available";
	case 0x34BF: return "Service or option not available, unspecified";
	case 0x34C1: return "Bearer capability not implemented";
	case 0x34C2: return "Channel type not implemented";
	case 0x34C5: return "Requested facility not implemented";
	case 0x34C6: return "Only restricted digital information bearer capability is available";
	case 0x34CF: return "Service or option not implemented, unspecified";
	case 0x34D1: return "Invalid call reference value";
	case 0x34D2: return "Identified channel does not exist";
	case 0x34D3: return "A suspended call exists, but this call identity does not";
	case 0x34D4: return "Call identity in use";
	case 0x34D5: return "No call suspended";
	case 0x34D6: return "Call having the requested call identity has been cleared";
	case 0x34D8: return "Incompatible destination";
	case 0x34DB: return "Invalid transit network selection";
	case 0x34DF: return "Invalid message, unspecified";
	case 0x34E0: return "Mandatory information element is missing";
	case 0x34E1: return "Message type non-existent or not implemented";
	case 0x34E2: return "Message not compatible with call state or message type non-existent or not implemented";
	case 0x34E3: return "Information element non-existent or not implemented";
	case 0x34E4: return "Invalid information element contents";
	case 0x34E5: return "Message not compatible with call state";
	case 0x34E6: return "Recovery on timer expiry";
	case 0x34EF: return "Protocol error, unspecified";
	case 0x34FF: return "Interworking, unspecified";

	default: return "No additional information";
    }
}
#endif

typedef struct {
	int typ;
	size_t off;
} _cdef;

#define _CBYTE	       1
#define _CWORD	       2
#define _CDWORD        3
#define _CSTRUCT       4
#define _CMSTRUCT      5
#define _CEND	       6

static _cdef cdef[] =
{
    /*00 */ 
 {_CEND},
    /*01 */ 
 {_CEND},
    /*02 */ 
 {_CEND},
    /*03 */ 
 {_CDWORD, offsetof(_cmsg, adr.adrController)},
    /*04 */ 
 {_CMSTRUCT, offsetof(_cmsg, AdditionalInfo)},
    /*05 */ 
 {_CSTRUCT, offsetof(_cmsg, B1configuration)},
    /*06 */ 
 {_CWORD, offsetof(_cmsg, B1protocol)},
    /*07 */ 
 {_CSTRUCT, offsetof(_cmsg, B2configuration)},
    /*08 */ 
 {_CWORD, offsetof(_cmsg, B2protocol)},
    /*09 */ 
 {_CSTRUCT, offsetof(_cmsg, B3configuration)},
    /*0a */ 
 {_CWORD, offsetof(_cmsg, B3protocol)},
    /*0b */ 
 {_CSTRUCT, offsetof(_cmsg, BC)},
    /*0c */ 
 {_CSTRUCT, offsetof(_cmsg, BChannelinformation)},
    /*0d */ 
 {_CMSTRUCT, offsetof(_cmsg, BProtocol)},
    /*0e */ 
 {_CSTRUCT, offsetof(_cmsg, CalledPartyNumber)},
    /*0f */ 
 {_CSTRUCT, offsetof(_cmsg, CalledPartySubaddress)},
    /*10 */ 
 {_CSTRUCT, offsetof(_cmsg, CallingPartyNumber)},
    /*11 */ 
 {_CSTRUCT, offsetof(_cmsg, CallingPartySubaddress)},
    /*12 */ 
 {_CDWORD, offsetof(_cmsg, CIPmask)},
    /*13 */ 
 {_CDWORD, offsetof(_cmsg, CIPmask2)},
    /*14 */ 
 {_CWORD, offsetof(_cmsg, CIPValue)},
    /*15 */ 
 {_CDWORD, offsetof(_cmsg, Class)},
    /*16 */ 
 {_CSTRUCT, offsetof(_cmsg, ConnectedNumber)},
    /*17 */ 
 {_CSTRUCT, offsetof(_cmsg, ConnectedSubaddress)},
    /*18 */ 
 {_CDWORD, offsetof(_cmsg, Data)},
    /*19 */ 
 {_CWORD, offsetof(_cmsg, DataHandle)},
    /*1a */ 
 {_CWORD, offsetof(_cmsg, DataLength)},
    /*1b */ 
 {_CSTRUCT, offsetof(_cmsg, FacilityConfirmationParameter)},
    /*1c */ 
 {_CSTRUCT, offsetof(_cmsg, Facilitydataarray)},
    /*1d */ 
 {_CSTRUCT, offsetof(_cmsg, FacilityIndicationParameter)},
    /*1e */ 
 {_CSTRUCT, offsetof(_cmsg, FacilityRequestParameter)},
    /*1f */ 
 {_CWORD, offsetof(_cmsg, FacilitySelector)},
    /*20 */ 
 {_CWORD, offsetof(_cmsg, Flags)},
    /*21 */ 
 {_CDWORD, offsetof(_cmsg, Function)},
    /*22 */ 
 {_CSTRUCT, offsetof(_cmsg, HLC)},
    /*23 */ 
 {_CWORD, offsetof(_cmsg, Info)},
    /*24 */ 
 {_CSTRUCT, offsetof(_cmsg, InfoElement)},
    /*25 */ 
 {_CDWORD, offsetof(_cmsg, InfoMask)},
    /*26 */ 
 {_CWORD, offsetof(_cmsg, InfoNumber)},
    /*27 */ 
 {_CSTRUCT, offsetof(_cmsg, Keypadfacility)},
    /*28 */ 
 {_CSTRUCT, offsetof(_cmsg, LLC)},
    /*29 */ 
 {_CSTRUCT, offsetof(_cmsg, ManuData)},
    /*2a */ 
 {_CDWORD, offsetof(_cmsg, ManuID)},
    /*2b */ 
 {_CSTRUCT, offsetof(_cmsg, NCPI)},
    /*2c */ 
 {_CWORD, offsetof(_cmsg, Reason)},
    /*2d */ 
 {_CWORD, offsetof(_cmsg, Reason_B3)},
    /*2e */ 
 {_CWORD, offsetof(_cmsg, Reject)},
    /*2f */ 
 {_CSTRUCT, offsetof(_cmsg, Useruserdata)}
};

static unsigned char *cpars[] =
{
    /* ALERT_REQ */ [0x01] = "\x03\x04\x0c\x27\x2f\x1c\x01\x01",
    /* CONNECT_REQ */ [0x02] = "\x03\x14\x0e\x10\x0f\x11\x0d\x06\x08\x0a\x05\x07\x09\x01\x0b\x28\x22\x04\x0c\x27\x2f\x1c\x01\x01",
    /* DISCONNECT_REQ */ [0x04] = "\x03\x04\x0c\x27\x2f\x1c\x01\x01",
    /* LISTEN_REQ */ [0x05] = "\x03\x25\x12\x13\x10\x11\x01",
    /* INFO_REQ */ [0x08] = "\x03\x0e\x04\x0c\x27\x2f\x1c\x01\x01",
    /* FACILITY_REQ */ [0x09] = "\x03\x1f\x1e\x01",
    /* SELECT_B_PROTOCOL_REQ */ [0x0a] = "\x03\x0d\x06\x08\x0a\x05\x07\x09\x01\x01",
    /* CONNECT_B3_REQ */ [0x0b] = "\x03\x2b\x01",
    /* DISCONNECT_B3_REQ */ [0x0d] = "\x03\x2b\x01",
    /* DATA_B3_REQ */ [0x0f] = "\x03\x18\x1a\x19\x20\x01",
    /* RESET_B3_REQ */ [0x10] = "\x03\x2b\x01",
    /* ALERT_CONF */ [0x13] = "\x03\x23\x01",
    /* CONNECT_CONF */ [0x14] = "\x03\x23\x01",
    /* DISCONNECT_CONF */ [0x16] = "\x03\x23\x01",
    /* LISTEN_CONF */ [0x17] = "\x03\x23\x01",
    /* MANUFACTURER_REQ */ [0x18] = "\x03\x2a\x15\x21\x29\x01",
    /* INFO_CONF */ [0x1a] = "\x03\x23\x01",
    /* FACILITY_CONF */ [0x1b] = "\x03\x23\x1f\x1b\x01",
    /* SELECT_B_PROTOCOL_CONF */ [0x1c] = "\x03\x23\x01",
    /* CONNECT_B3_CONF */ [0x1d] = "\x03\x23\x01",
    /* DISCONNECT_B3_CONF */ [0x1f] = "\x03\x23\x01",
    /* DATA_B3_CONF */ [0x21] = "\x03\x19\x23\x01",
    /* RESET_B3_CONF */ [0x22] = "\x03\x23\x01",
    /* CONNECT_IND */ [0x26] = "\x03\x14\x0e\x10\x0f\x11\x0b\x28\x22\x04\x0c\x27\x2f\x1c\x01\x01",
    /* CONNECT_ACTIVE_IND */ [0x27] = "\x03\x16\x17\x28\x01",
    /* DISCONNECT_IND */ [0x28] = "\x03\x2c\x01",
    /* MANUFACTURER_CONF */ [0x2a] = "\x03\x2a\x15\x21\x29\x01",
    /* INFO_IND */ [0x2c] = "\x03\x26\x24\x01",
    /* FACILITY_IND */ [0x2d] = "\x03\x1f\x1d\x01",
    /* CONNECT_B3_IND */ [0x2f] = "\x03\x2b\x01",
    /* CONNECT_B3_ACTIVE_IND */ [0x30] = "\x03\x2b\x01",
    /* DISCONNECT_B3_IND */ [0x31] = "\x03\x2d\x2b\x01",
    /* DATA_B3_IND */ [0x33] = "\x03\x18\x1a\x19\x20\x01",
    /* RESET_B3_IND */ [0x34] = "\x03\x2b\x01",
    /* CONNECT_B3_T90_ACTIVE_IND */ [0x35] = "\x03\x2b\x01",
    /* CONNECT_RESP */ [0x38] = "\x03\x2e\x0d\x06\x08\x0a\x05\x07\x09\x01\x16\x17\x28\x04\x0c\x27\x2f\x1c\x01\x01",
    /* CONNECT_ACTIVE_RESP */ [0x39] = "\x03\x01",
    /* DISCONNECT_RESP */ [0x3a] = "\x03\x01",
    /* MANUFACTURER_IND */ [0x3c] = "\x03\x2a\x15\x21\x29\x01",
    /* INFO_RESP */ [0x3e] = "\x03\x01",
    /* FACILITY_RESP */ [0x3f] = "\x03\x1f\x01",
    /* CONNECT_B3_RESP */ [0x41] = "\x03\x2e\x2b\x01",
    /* CONNECT_B3_ACTIVE_RESP */ [0x42] = "\x03\x01",
    /* DISCONNECT_B3_RESP */ [0x43] = "\x03\x01",
    /* DATA_B3_RESP */ [0x45] = "\x03\x19\x01",
    /* RESET_B3_RESP */ [0x46] = "\x03\x01",
    /* CONNECT_B3_T90_ACTIVE_RESP */ [0x47] = "\x03\x01",
    /* MANUFACTURER_RESP */ [0x4e] = "\x03\x2a\x15\x21\x29\x01",
};

/*-------------------------------------------------------*/

#define byteTLcpy(x,y)        *(u8 *)(x)=*(u8 *)(y);
#define wordTLcpy(x,y)        *(u16 *)(x)=*(u16 *)(y);
#define dwordTLcpy(x,y)       memcpy(x,y,4);
#define structTLcpy(x,y,l)    memcpy (x,y,l)
#define structTLcpyovl(x,y,l) memmove (x,y,l)

#define byteTRcpy(x,y)        *(u8 *)(y)=*(u8 *)(x);
#define wordTRcpy(x,y)        *(u16 *)(y)=*(u16 *)(x);
#define dwordTRcpy(x,y)       memcpy(y,x,4);
#define structTRcpy(x,y,l)    memcpy (y,x,l)
#define structTRcpyovl(x,y,l) memmove (y,x,l)

/*-------------------------------------------------------*/
static unsigned command_2_index(unsigned c, unsigned sc)
{
	if (c & 0x80)
		c = 0x9 + (c & 0x0f);
	else if (c <= 0x0f);
	else if (c == 0x41)
		c = 0x9 + 0x1;
	else if (c == 0xff)
		c = 0x00;
	return (sc & 3) * (0x9 + 0x9) + c;
}

/*-------------------------------------------------------*/
#define TYP (cdef[cmsg->par[cmsg->p]].typ)
#define OFF (((u8 *)cmsg)+cdef[cmsg->par[cmsg->p]].off)

static void jumpcstruct(_cmsg * cmsg)
{
	unsigned layer;
	for (cmsg->p++, layer = 1; layer;) {
		/* $$$$$ assert (cmsg->p); */
		cmsg->p++;
		switch (TYP) {
		case _CMSTRUCT:
			layer++;
			break;
		case _CEND:
			layer--;