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android_kernel_samsung_msm8976/drivers/isdn/capi/capiutil.c
Karsten Keil 17f0cd2f35 [PATCH] Fix buffer overflow and races in capi debug functions 
The CAPI trace debug functions were using a fixed size buffer, which can be
overflowed if wrong formatted CAPI messages were sent to the kernel capi
layer.  The code was also not protected against multiple callers.  This fix
bug 8028.

Additionally the patch make the CAPI trace functions optional.

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:39 -08:00

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/* $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 <calle@calle.de>
*
* 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/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--;
break;
}
}
}
/*-------------------------------------------------------*/
static void pars_2_message(_cmsg * cmsg)
{
for (; TYP != _CEND; cmsg->p++) {
switch (TYP) {
case _CBYTE:
byteTLcpy(cmsg->m + cmsg->l, OFF);
cmsg->l++;
break;
case _CWORD:
wordTLcpy(cmsg->m + cmsg->l, OFF);
cmsg->l += 2;
break;
case _CDWORD:
dwordTLcpy(cmsg->m + cmsg->l, OFF);
cmsg->l += 4;
break;
case _CSTRUCT:
if (*(u8 **) OFF == 0) {
*(cmsg->m + cmsg->l) = '\0';
cmsg->l++;
} else if (**(_cstruct *) OFF != 0xff) {
structTLcpy(cmsg->m + cmsg->l, *(_cstruct *) OFF, 1 + **(_cstruct *) OFF);
cmsg->l += 1 + **(_cstruct *) OFF;
} else {
_cstruct s = *(_cstruct *) OFF;
structTLcpy(cmsg->m + cmsg->l, s, 3 + *(u16 *) (s + 1));
cmsg->l += 3 + *(u16 *) (s + 1);
}
break;
case _CMSTRUCT:
/*----- Metastruktur 0 -----*/
if (*(_cmstruct *) OFF == CAPI_DEFAULT) {
*(cmsg->m + cmsg->l) = '\0';
cmsg->l++;
jumpcstruct(cmsg);
}
/*----- Metastruktur wird composed -----*/
else {
unsigned _l = cmsg->l;
unsigned _ls;
cmsg->l++;
cmsg->p++;
pars_2_message(cmsg);
_ls = cmsg->l - _l - 1;
if (_ls < 255)
(cmsg->m + _l)[0] = (u8) _ls;
else {
structTLcpyovl(cmsg->m + _l + 3, cmsg->m + _l + 1, _ls);
(cmsg->m + _l)[0] = 0xff;
wordTLcpy(cmsg->m + _l + 1, &_ls);
}
}
break;
}
}
}
/*-------------------------------------------------------*/
unsigned capi_cmsg2message(_cmsg * cmsg, u8 * msg)
{
cmsg->m = msg;
cmsg->l = 8;
cmsg->p = 0;
cmsg->par = cpars[command_2_index(cmsg->Command, cmsg->Subcommand)];
pars_2_message(cmsg);
wordTLcpy(msg + 0, &cmsg->l);
byteTLcpy(cmsg->m + 4, &cmsg->Command);
byteTLcpy(cmsg->m + 5, &cmsg->Subcommand);
wordTLcpy(cmsg->m + 2, &cmsg->ApplId);
wordTLcpy(cmsg->m + 6, &cmsg->Messagenumber);
return 0;
}
/*-------------------------------------------------------*/
static void message_2_pars(_cmsg * cmsg)
{
for (; TYP != _CEND; cmsg->p++) {
switch (TYP) {
case _CBYTE:
byteTRcpy(cmsg->m + cmsg->l, OFF);
cmsg->l++;
break;
case _CWORD:
wordTRcpy(cmsg->m + cmsg->l, OFF);
cmsg->l += 2;
break;
case _CDWORD:
dwordTRcpy(cmsg->m + cmsg->l, OFF);
cmsg->l += 4;
break;
case _CSTRUCT:
*(u8 **) OFF = cmsg->m + cmsg->l;
if (cmsg->m[cmsg->l] != 0xff)
cmsg->l += 1 + cmsg->m[cmsg->l];
else
cmsg->l += 3 + *(u16 *) (cmsg->m + cmsg->l + 1);
break;
case _CMSTRUCT:
/*----- Metastruktur 0 -----*/
if (cmsg->m[cmsg->l] == '\0') {
*(_cmstruct *) OFF = CAPI_DEFAULT;
cmsg->l++;
jumpcstruct(cmsg);
} else {
unsigned _l = cmsg->l;
*(_cmstruct *) OFF = CAPI_COMPOSE;
cmsg->l = (cmsg->m + _l)[0] == 255 ? cmsg->l + 3 : cmsg->l + 1;
cmsg->p++;
message_2_pars(cmsg);
}
break;
}
}
}
/*-------------------------------------------------------*/
unsigned capi_message2cmsg(_cmsg * cmsg, u8 * msg)
{
memset(cmsg, 0, sizeof(_cmsg));
cmsg->m = msg;
cmsg->l = 8;
cmsg->p = 0;
byteTRcpy(cmsg->m + 4, &cmsg->Command);
byteTRcpy(cmsg->m + 5, &cmsg->Subcommand);
cmsg->par = cpars[command_2_index(cmsg->Command, cmsg->Subcommand)];
message_2_pars(cmsg);
wordTRcpy(msg + 0, &cmsg->l);
wordTRcpy(cmsg->m + 2, &cmsg->ApplId);
wordTRcpy(cmsg->m + 6, &cmsg->Messagenumber);
return 0;
}
/*-------------------------------------------------------*/
unsigned capi_cmsg_header(_cmsg * cmsg, u16 _ApplId,
u8 _Command, u8 _Subcommand,
u16 _Messagenumber, u32 _Controller)
{
memset(cmsg, 0, sizeof(_cmsg));
cmsg->ApplId = _ApplId;
cmsg->Command = _Command;
cmsg->Subcommand = _Subcommand;
cmsg->Messagenumber = _Messagenumber;
cmsg->adr.adrController = _Controller;
return 0;
}
/*-------------------------------------------------------*/
static char *mnames[] =
{
[0x01] = "ALERT_REQ",
[0x02] = "CONNECT_REQ",
[0x04] = "DISCONNECT_REQ",
[0x05] = "LISTEN_REQ",
[0x08] = "INFO_REQ",
[0x09] = "FACILITY_REQ",
[0x0a] = "SELECT_B_PROTOCOL_REQ",
[0x0b] = "CONNECT_B3_REQ",
[0x0d] = "DISCONNECT_B3_REQ",
[0x0f] = "DATA_B3_REQ",
[0x10] = "RESET_B3_REQ",
[0x13] = "ALERT_CONF",
[0x14] = "CONNECT_CONF",
[0x16] = "DISCONNECT_CONF",
[0x17] = "LISTEN_CONF",
[0x18] = "MANUFACTURER_REQ",
[0x1a] = "INFO_CONF",
[0x1b] = "FACILITY_CONF",
[0x1c] = "SELECT_B_PROTOCOL_CONF",
[0x1d] = "CONNECT_B3_CONF",
[0x1f] = "DISCONNECT_B3_CONF",
[0x21] = "DATA_B3_CONF",
[0x22] = "RESET_B3_CONF",
[0x26] = "CONNECT_IND",
[0x27] = "CONNECT_ACTIVE_IND",
[0x28] = "DISCONNECT_IND",
[0x2a] = "MANUFACTURER_CONF",
[0x2c] = "INFO_IND",
[0x2d] = "FACILITY_IND",
[0x2f] = "CONNECT_B3_IND",
[0x30] = "CONNECT_B3_ACTIVE_IND",
[0x31] = "DISCONNECT_B3_IND",
[0x33] = "DATA_B3_IND",
[0x34] = "RESET_B3_IND",
[0x35] = "CONNECT_B3_T90_ACTIVE_IND",
[0x38] = "CONNECT_RESP",
[0x39] = "CONNECT_ACTIVE_RESP",
[0x3a] = "DISCONNECT_RESP",
[0x3c] = "MANUFACTURER_IND",
[0x3e] = "INFO_RESP",
[0x3f] = "FACILITY_RESP",
[0x41] = "CONNECT_B3_RESP",
[0x42] = "CONNECT_B3_ACTIVE_RESP",
[0x43] = "DISCONNECT_B3_RESP",
[0x45] = "DATA_B3_RESP",
[0x46] = "RESET_B3_RESP",
[0x47] = "CONNECT_B3_T90_ACTIVE_RESP",
[0x4e] = "MANUFACTURER_RESP"
};
char *capi_cmd2str(u8 cmd, u8 subcmd)
{
return mnames[command_2_index(cmd, subcmd)];
}
/*-------------------------------------------------------*/
#ifdef CONFIG_CAPI_TRACE
/*-------------------------------------------------------*/
static char *pnames[] =
{
/*00 */ NULL,
/*01 */ NULL,
/*02 */ NULL,
/*03 */ "Controller/PLCI/NCCI",
/*04 */ "AdditionalInfo",
/*05 */ "B1configuration",
/*06 */ "B1protocol",
/*07 */ "B2configuration",
/*08 */ "B2protocol",
/*09 */ "B3configuration",
/*0a */ "B3protocol",
/*0b */ "BC",
/*0c */ "BChannelinformation",
/*0d */ "BProtocol",
/*0e */ "CalledPartyNumber",
/*0f */ "CalledPartySubaddress",
/*10 */ "CallingPartyNumber",
/*11 */ "CallingPartySubaddress",
/*12 */ "CIPmask",
/*13 */ "CIPmask2",
/*14 */ "CIPValue",
/*15 */ "Class",
/*16 */ "ConnectedNumber",
/*17 */ "ConnectedSubaddress",
/*18 */ "Data32",
/*19 */ "DataHandle",
/*1a */ "DataLength",
/*1b */ "FacilityConfirmationParameter",
/*1c */ "Facilitydataarray",
/*1d */ "FacilityIndicationParameter",
/*1e */ "FacilityRequestParameter",
/*1f */ "FacilitySelector",
/*20 */ "Flags",
/*21 */ "Function",
/*22 */ "HLC",
/*23 */ "Info",
/*24 */ "InfoElement",
/*25 */ "InfoMask",
/*26 */ "InfoNumber",
/*27 */ "Keypadfacility",
/*28 */ "LLC",
/*29 */ "ManuData",
/*2a */ "ManuID",
/*2b */ "NCPI",
/*2c */ "Reason",
/*2d */ "Reason_B3",
/*2e */ "Reject",
/*2f */ "Useruserdata"
};
#include <stdarg.h>
/*-------------------------------------------------------*/
static _cdebbuf *bufprint(_cdebbuf *cdb, char *fmt,...)
{
va_list f;
size_t n,r;
if (!cdb)
return NULL;
va_start(f, fmt);
r = cdb->size - cdb->pos;
n = vsnprintf(cdb->p, r, fmt, f);
va_end(f);
if (n >= r) {
/* truncated, need bigger buffer */
size_t ns = 2 * cdb->size;
u_char *nb;
while ((ns - cdb->pos) <= n)
ns *= 2;
nb = kmalloc(ns, GFP_ATOMIC);
if (!nb) {
cdebbuf_free(cdb);
return NULL;
}
memcpy(nb, cdb->buf, cdb->pos);
kfree(cdb->buf);
nb[cdb->pos] = 0;
cdb->buf = nb;
cdb->p = cdb->buf + cdb->pos;
cdb->size = ns;
va_start(f, fmt);
r = cdb->size - cdb->pos;
n = vsnprintf(cdb->p, r, fmt, f);
va_end(f);
}
cdb->p += n;
cdb->pos += n;
return cdb;
}
static _cdebbuf *printstructlen(_cdebbuf *cdb, u8 * m, unsigned len)
{
unsigned hex = 0;
if (!cdb)
return NULL;
for (; len; len--, m++)
if (isalnum(*m) || *m == ' ') {
if (hex)
cdb = bufprint(cdb, ">");
cdb = bufprint(cdb, "%c", *m);
hex = 0;
} else {
if (!hex)
cdb = bufprint(cdb, "<%02x", *m);
else
cdb = bufprint(cdb, " %02x", *m);
hex = 1;
}
if (hex)
cdb = bufprint(cdb, ">");
return cdb;
}
static _cdebbuf *printstruct(_cdebbuf *cdb, u8 * m)
{
unsigned len;
if (m[0] != 0xff) {
len = m[0];
m += 1;
} else {
len = ((u16 *) (m + 1))[0];
m += 3;
}
cdb = printstructlen(cdb, m, len);
return cdb;
}
/*-------------------------------------------------------*/
#define NAME (pnames[cmsg->par[cmsg->p]])
static _cdebbuf *protocol_message_2_pars(_cdebbuf *cdb, _cmsg *cmsg, int level)
{
for (; TYP != _CEND; cmsg->p++) {
int slen = 29 + 3 - level;
int i;
if (!cdb)
return NULL;
cdb = bufprint(cdb, " ");
for (i = 0; i < level - 1; i++)
cdb = bufprint(cdb, " ");
switch (TYP) {
case _CBYTE:
cdb = bufprint(cdb, "%-*s = 0x%x\n", slen, NAME, *(u8 *) (cmsg->m + cmsg->l));
cmsg->l++;
break;
case _CWORD:
cdb = bufprint(cdb, "%-*s = 0x%x\n", slen, NAME, *(u16 *) (cmsg->m + cmsg->l));
cmsg->l += 2;
break;
case _CDWORD:
cdb = bufprint(cdb, "%-*s = 0x%lx\n", slen, NAME, *(u32 *) (cmsg->m + cmsg->l));
cmsg->l += 4;
break;
case _CSTRUCT:
cdb = bufprint(cdb, "%-*s = ", slen, NAME);
if (cmsg->m[cmsg->l] == '\0')
cdb = bufprint(cdb, "default");
else
cdb = printstruct(cdb, cmsg->m + cmsg->l);
cdb = bufprint(cdb, "\n");
if (cmsg->m[cmsg->l] != 0xff)
cmsg->l += 1 + cmsg->m[cmsg->l];
else
cmsg->l += 3 + *(u16 *) (cmsg->m + cmsg->l + 1);
break;
case _CMSTRUCT:
/*----- Metastruktur 0 -----*/
if (cmsg->m[cmsg->l] == '\0') {
cdb = bufprint(cdb, "%-*s = default\n", slen, NAME);
cmsg->l++;
jumpcstruct(cmsg);
} else {
char *name = NAME;
unsigned _l = cmsg->l;
cdb = bufprint(cdb, "%-*s\n", slen, name);
cmsg->l = (cmsg->m + _l)[0] == 255 ? cmsg->l + 3 : cmsg->l + 1;
cmsg->p++;
cdb = protocol_message_2_pars(cdb, cmsg, level + 1);
}
break;
}
}
return cdb;
}
/*-------------------------------------------------------*/
static _cdebbuf *g_debbuf;
static u_long g_debbuf_lock;
static _cmsg *g_cmsg;
_cdebbuf *cdebbuf_alloc(void)
{
_cdebbuf *cdb;
if (likely(!test_and_set_bit(1, &g_debbuf_lock))) {
cdb = g_debbuf;
goto init;
} else
cdb = kmalloc(sizeof(_cdebbuf), GFP_ATOMIC);
if (!cdb)
return NULL;
cdb->buf = kmalloc(CDEBUG_SIZE, GFP_ATOMIC);
if (!cdb->buf) {
kfree(cdb);
return NULL;
}
cdb->size = CDEBUG_SIZE;
init:
cdb->buf[0] = 0;
cdb->p = cdb->buf;
cdb->pos = 0;
return cdb;
}
void cdebbuf_free(_cdebbuf *cdb)
{
if (likely(cdb == g_debbuf)) {
test_and_clear_bit(1, &g_debbuf_lock);
return;
}
if (likely(cdb))
kfree(cdb->buf);
kfree(cdb);
}
_cdebbuf *capi_message2str(u8 * msg)
{
_cdebbuf *cdb;
_cmsg *cmsg;
cdb = cdebbuf_alloc();
if (unlikely(!cdb))
return NULL;
if (likely(cdb == g_debbuf))
cmsg = g_cmsg;
else
cmsg = kmalloc(sizeof(_cmsg), GFP_ATOMIC);
if (unlikely(!cmsg)) {
cdebbuf_free(cdb);
return NULL;
}
cmsg->m = msg;
cmsg->l = 8;
cmsg->p = 0;
byteTRcpy(cmsg->m + 4, &cmsg->Command);
byteTRcpy(cmsg->m + 5, &cmsg->Subcommand);
cmsg->par = cpars[command_2_index(cmsg->Command, cmsg->Subcommand)];
cdb = bufprint(cdb, "%-26s ID=%03d #0x%04x LEN=%04d\n",
mnames[command_2_index(cmsg->Command, cmsg->Subcommand)],
((unsigned short *) msg)[1],
((unsigned short *) msg)[3],
((unsigned short *) msg)[0]);
cdb = protocol_message_2_pars(cdb, cmsg, 1);
if (unlikely(cmsg != g_cmsg))
kfree(cmsg);
return cdb;
}
_cdebbuf *capi_cmsg2str(_cmsg * cmsg)
{
_cdebbuf *cdb;
cdb = cdebbuf_alloc();
if (!cdb)
return NULL;
cmsg->l = 8;
cmsg->p = 0;
cdb = bufprint(cdb, "%s ID=%03d #0x%04x LEN=%04d\n",
mnames[command_2_index(cmsg->Command, cmsg->Subcommand)],
((u16 *) cmsg->m)[1],
((u16 *) cmsg->m)[3],
((u16 *) cmsg->m)[0]);
cdb = protocol_message_2_pars(cdb, cmsg, 1);
return cdb;
}
int __init cdebug_init(void)
{
g_cmsg= kmalloc(sizeof(_cmsg), GFP_KERNEL);
if (!g_cmsg)
return ENOMEM;
g_debbuf = kmalloc(sizeof(_cdebbuf), GFP_KERNEL);
if (!g_debbuf) {
kfree(g_cmsg);
return ENOMEM;
}
g_debbuf->buf = kmalloc(CDEBUG_GSIZE, GFP_KERNEL);
if (!g_debbuf->buf) {
kfree(g_cmsg);
kfree(g_debbuf);
return ENOMEM;;
}
g_debbuf->size = CDEBUG_GSIZE;
g_debbuf->buf[0] = 0;
g_debbuf->p = g_debbuf->buf;
g_debbuf->pos = 0;
return 0;
}
void __exit cdebug_exit(void)
{
if (g_debbuf)
kfree(g_debbuf->buf);
kfree(g_debbuf);
kfree(g_cmsg);
}
#else /* !CONFIG_CAPI_TRACE */
static _cdebbuf g_debbuf = {"CONFIG_CAPI_TRACE not enabled", NULL, 0, 0};
_cdebbuf *capi_message2str(u8 * msg)
{
return &g_debbuf;
}
_cdebbuf *capi_cmsg2str(_cmsg * cmsg)
{
return &g_debbuf;
}
_cdebbuf *cdebbuf_alloc(void)
{
return &g_debbuf;
}
void cdebbuf_free(_cdebbuf *cdb)
{
}
int __init cdebug_init(void)
{
return 0;
}
void __exit cdebug_exit(void)
{
}
#endif
EXPORT_SYMBOL(cdebbuf_alloc);
EXPORT_SYMBOL(cdebbuf_free);
EXPORT_SYMBOL(capi_cmsg2message);
EXPORT_SYMBOL(capi_message2cmsg);
EXPORT_SYMBOL(capi_cmsg_header);
EXPORT_SYMBOL(capi_cmd2str);
EXPORT_SYMBOL(capi_cmsg2str);
EXPORT_SYMBOL(capi_message2str);
EXPORT_SYMBOL(capi_info2str);
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