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chan-capi/chan_capi_qsig_ecma.c

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/*
* An implementation of Common ISDN API 2.0 for Asterisk
*
* Copyright (C) 2005-2008 Cytronics & Melware
* Copyright (C) 2007 Mario Goegel
*
* Armin Schindler <armin@melware.de>
* Mario Goegel <m.goegel@gmx.de>
*
* This program is free software and may be modified and
* distributed under the terms of the GNU Public License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "chan_capi_platform.h"
#include "chan_capi20.h"
#include "chan_capi.h"
#include "chan_capi_utils.h"
#include "chan_capi_qsig.h"
#include "chan_capi_qsig_ecma.h"
#include "chan_capi_qsig_asn197ade.h"
#include "chan_capi_qsig_asn197no.h"
/*
* Handle Operation: 1.3.12.9.0-3 ECMA/ISDN/NAMEPRESENTATION
*
* This function decodes the namepresentation facility
* The name will be copied in the cid.cid_name field of the asterisk channel struct
*
* parameters
* invoke struct, which contains encoded data from facility
* i is pointer to capi channel
* returns
* nothing
*/
void cc_qsig_op_ecma_isdn_namepres(struct cc_qsig_invokedata *invoke, struct capi_pvt *i)
{
char callername[51]; /* ECMA defines max length to 50 */
unsigned int namelength = 0;
unsigned int datalength;
int myidx = 0;
char *nametype = NULL;
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 "Handling Name Operation (id# %#x)\n", invoke->id);
callername[0] = 0;
datalength = invoke->datalen;
myidx = cc_qsig_asn197no_get_name(callername, ASN197NO_NAME_STRSIZE, &namelength, &myidx, invoke->data );
if (namelength == 0) {
return;
}
/* TODO: Maybe we do some charset conversions */
switch (invoke->type) {
case 0: /* Calling Name */
nametype = "CALLING NAME";
break;
case 1: /* Called Name */
nametype = "CALLED NAME";
break;
case 2: /* Connected Name */
nametype = "CONNECTED NAME";
break;
case 3: /* Busy Name */
nametype = "BUSY NAME";
break;
}
switch (invoke->type) {
case 0: /* Calling Name */
#ifdef CC_AST_HAS_VERSION_1_8
ast_set_callerid(i->owner, NULL, callername, NULL);
#else
i->owner->cid.cid_name = ast_strdup(callername); /* Save name to callerid */
#endif
break;
case 1: /* Called Name */
case 2: /* Connected Name */
case 3: /* Busy Name */
if (i->qsig_data.dnameid) { /* this facility may come more than once - if so, then update this value */
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * deleting previously received name.\n", nametype, namelength, callername);
ast_free(i->qsig_data.dnameid);
}
i->qsig_data.dnameid = ast_strdup(callername); /* save name as destination in qsig specific fields */
/* there's no similarly field in asterisk */
break;
default:
break;
}
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Got %s: \"%s\" (%i byte(s))\n", nametype, callername, namelength);
/* if there was an sequence tag, we have more informations here, but we will ignore it at the moment */
}
/*
* Encode Operation: 1.3.12.9.0-3 ECMA/ISDN/NAMEPRESENTATION
*
* This function encodes the namepresentation facility
* The name will be copied from the cid.cid_name field of the asterisk channel struct.
* We create an invoke struct with the complete encoded invoke.
*
* parameters
* buf is pointer to facility array, not used now
* idx current idx in facility array, not used now
* invoke struct, which contains encoded data for facility
* i is pointer to capi channel
* returns
* always 0
*/
int cc_qsig_encode_ecma_name_invoke(unsigned char * buf, unsigned int *idx, struct cc_qsig_invokedata *invoke, struct capi_pvt *i, int nametype, const char * name)
{
unsigned char namebuf[51];
unsigned char data[255];
int dataidx = 0;
int namelen = 0;
if (name)
namelen = strlen(name);
if (namelen < 1) { /* There's no name available, try to take Interface-Name */
if (i->name) {
if (strlen(i->name) >= 1) {
if (namelen > 50)
namelen = 50;
namelen = strlen(i->name);
memcpy(namebuf, i->name, namelen);
}
}
} else {
if (namelen > 50)
namelen = 50;
memcpy(namebuf, name, namelen);
}
namebuf[namelen] = 0;
invoke->id = 1;
invoke->descr_type = -1; /* Let others do the work: qsig_add_invoke */
invoke->type = (nametype % 4); /* Invoke Operation Number, if OID it's the last byte*/
if (namelen>0) {
data[dataidx++] = 0x80; /* We send only simple Name, Namepresentation allowed */
data[dataidx++] = namelen;
memcpy(&data[dataidx], namebuf, namelen);
dataidx += namelen;
} else {
data[dataidx++] = 0x84; /* Name not available */
data[dataidx++] = 0;
}
invoke->datalen = dataidx;
memcpy(invoke->data, data, dataidx);
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Sending \"%s\": (%i byte(s))\n", namebuf, namelen);
return 0;
}
/*
* Encode Operation: 1.3.12.9.22 ECMA/ISDN/LEG_INFO3
*
* This function encodes the namepresentation facility
* The name will be copied from the cid.cid_name field of the asterisk channel struct.
* We create an invoke struct with the complete encoded invoke.
*
* parameters
* buf is pointer to facility array, not used now
* idx current idx in facility array, not used now
* invoke struct, which contains encoded data for facility
* i is pointer to capi channel
* returns
* always 0
*/
int cc_qsig_encode_ecma_isdn_leginfo3_invoke(unsigned char * buf, unsigned int *idx, struct cc_qsig_invokedata *invoke, struct capi_pvt *i, char *name)
{
unsigned char namebuf[51];
unsigned char data[255];
int dataidx = 0;
int namelen = 0;
if (name)
namelen = strlen(name);
if (namelen < 1) { /* There's no name available, try to take Interface-Name */
if (i->name) {
if (strlen(i->name) >= 1) {
if (namelen > 50)
namelen = 50;
namelen = strlen(i->name);
memcpy(namebuf, i->name, namelen);
}
}
} else {
if (namelen > 50)
namelen = 50;
memcpy(namebuf, name, namelen);
}
invoke->id = 1;
invoke->descr_type = -1; /* Let others do the work: qsig_add_invoke */
invoke->type = 22; /* Invoke Operation Number, if OID it's the last byte*/
data[dataidx++] = ASN1_TF_CONSTRUCTED | ASN1_SEQUENCE;
data[dataidx++] = 5 + namelen;
data[dataidx++] = ASN1_BOOLEAN; /* PresentationAllowedIndicator */
data[dataidx++] = 1;
data[dataidx++] = 1;
if (namelen>0) {
data[dataidx++] = 0x80; /* We send only simple Name, Namepresentation allowed */
data[dataidx++] = namelen;
memcpy(&data[dataidx], namebuf, namelen);
dataidx += namelen;
} else {
data[dataidx++] = 0x84; /* Name not available */
data[dataidx++] = 0;
}
invoke->datalen = dataidx;
memcpy(invoke->data, data, dataidx);
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Sending QSIG_LEG_INFO3 \"%s\": (%i byte(s))\n", namebuf, namelen);
return 0;
}
/*
* Handle Operation: 1.3.12.9.21 ECMA/ISDN/LEG_INFORMATION2
*
* This function decodes the LEG INFORMATION2 facility
* The datas will be copied in the some Asterisk channel variables -> see README.qsig
*
* parameters
* invoke struct, which contains encoded data from facility
* i is pointer to capi channel
* returns
* nothing
*/
void cc_qsig_op_ecma_isdn_leginfo2(struct cc_qsig_invokedata *invoke, struct capi_pvt *i)
{
unsigned int datalength;
unsigned int seqlength = 0;
int myidx = 0;
unsigned int parameter = 0;
unsigned int divCount = 0;
unsigned int divReason = 0;
unsigned int orgDivReason = 0;
char tempstr[5];
char divertNum[ASN197ADE_NUMDIGITS_STRSIZE+1];
char origCalledNum[ASN197ADE_NUMDIGITS_STRSIZE+1];
struct asn197ade_numberscreened divertPNS, origPNS;
char divertName[ASN197NO_NAME_STRSIZE+1];
char origCalledName[ASN197NO_NAME_STRSIZE+1];
unsigned int temp = 0;
unsigned int temp2 = 0;
divertNum[0] = 0;
origCalledNum[0] = 0;
divertNum[0] = 0;
divertName[0] = 0;
origCalledName[0] = 0;
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 "Handling QSIG LEG INFO2 (id# %#x)\n", invoke->id);
origPNS.partyNumber = NULL;
divertPNS.partyNumber = NULL;
if (invoke->data[myidx++] != (ASN1_SEQUENCE | ASN1_TC_UNIVERSAL | ASN1_TF_CONSTRUCTED)) { /* 0x30 */
/* We do not handle this, because it should start with an sequence tag */
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * not Handling QSIG LEG INFO2 - not a sequence\n");
return;
}
/* This facility is encoded as SEQUENCE */
seqlength = invoke->data[myidx++];
datalength = invoke->datalen;
if (datalength < (seqlength+1)) {
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * not Handling QSIG LEG INFO2 - buffer error\n");
return;
}
if (invoke->data[myidx++] == ASN1_INTEGER)
divCount = cc_qsig_asn1_get_integer(invoke->data, &myidx);
if (invoke->data[myidx++] == ASN1_ENUMERATED)
divReason = cc_qsig_asn1_get_integer(invoke->data, &myidx);
while (myidx < datalength) {
parameter = (invoke->data[myidx++] & 0x0f);
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * Found parameter %i\n", parameter);
switch (parameter) {
case 0:
myidx++; /* Ignore Length of enumeration tag*/
if (invoke->data[myidx++] == ASN1_ENUMERATED)
orgDivReason = cc_qsig_asn1_get_integer(invoke->data, &myidx);
break;
case 1:
temp = invoke->data[myidx++]; /* keep the length of this info - maybe we don't get all data now */
cc_qsig_asn197ade_get_pns(invoke->data, &myidx, &divertPNS);
myidx += temp;
break;
case 2:
temp = invoke->data[myidx++]; /* keep the length of this info - maybe we don't get all data now */
cc_qsig_asn197ade_get_pns(invoke->data, &myidx, &origPNS);
myidx += temp;
break;
case 3:
/* Redirecting Name */
temp = invoke->data[myidx++]; /* keep the length of this info - maybe we don't get all data now */
cc_qsig_asn197no_get_name(divertName, ASN197NO_NAME_STRSIZE, &temp2, &myidx, invoke->data);
myidx += temp + 1;
break;
case 4:
/* origCalled Name */
temp = invoke->data[myidx++]; /* keep the length of this info - maybe we don't get all data now */
cc_qsig_asn197no_get_name(origCalledName, ASN197NO_NAME_STRSIZE, &temp2, &myidx, invoke->data);
myidx += temp + 1;
break;
default:
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * unknown parameter %i\n", parameter);
break;
}
}
snprintf(tempstr, 5, "%i", divReason);
pbx_builtin_setvar_helper(i->owner, "_QSIG_LI2_DIVREASON", tempstr);
snprintf(tempstr, 5, "%i", orgDivReason);
pbx_builtin_setvar_helper(i->owner, "_QSIG_LI2_ODIVREASON", tempstr);
snprintf(tempstr, 5, "%i", divCount);
pbx_builtin_setvar_helper(i->owner, "_QSIG_LI2_DIVCOUNT", tempstr);
if (divertPNS.partyNumber)
pbx_builtin_setvar_helper(i->owner, "_QSIG_LI2_DIVNUM", divertPNS.partyNumber);
if (origPNS.partyNumber)
pbx_builtin_setvar_helper(i->owner, "_QSIG_LI2_ODIVNUM", origPNS.partyNumber);
pbx_builtin_setvar_helper(i->owner, "_QSIG_LI2_DIVNAME", divertName);
pbx_builtin_setvar_helper(i->owner, "_QSIG_LI2_ODIVNAME", origCalledName);
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Got QSIG_LEG_INFO2: %i(%i), %ix %s->%s, %s->%s\n", divReason, orgDivReason, divCount, origPNS.partyNumber, divertPNS.partyNumber, origCalledName, divertName);
return;
}
/*
* Encode Operation: 1.3.12.9.12 ECMA/ISDN/CALLTRANSFER
*
* This function encodes the call transfer facility
*
* We create an invoke struct with the complete encoded invoke.
*
* parameters
* buf is pointer to facility array, not used now
* idx current idx in facility array, not used now
* invoke struct, which contains encoded data for facility
* i is pointer to capi channel
* param is parameter from capicommand
* info this facility is part of 2, 0 is facility 1, 1 is facility 2
* returns
* always 0
*/
void cc_qsig_encode_ecma_calltransfer(unsigned char * buf, unsigned int *idx, struct cc_qsig_invokedata *invoke, struct capi_pvt *i, char *param, int info)
{
char *cid, *ccanswer;
char *name = NULL;
int icanswer = 0;
int cidlen = 0;
int namelength = 0;
int seqlen = 13;
char c[255];
int ix = 0;
if (param) { /* got Call Transfer Parameters */
if (info) {
cid = strsep(&param, COMMANDSEPARATOR);
cidlen = strlen(cid);
if (cidlen > 20) /* HACK: stop action here, maybe we have invalid data */
cidlen = 20;
} else {
char *tmp = strsep(&param, COMMANDSEPARATOR);
tmp = NULL;
cid = strsep(&param, COMMANDSEPARATOR);
cidlen = strlen(cid);
if (cidlen > 20) /* HACK: stop action here, maybe we have invalid data */
cidlen = 20;
ccanswer = strsep(&param, COMMANDSEPARATOR);
if (ccanswer[0])
icanswer = ccanswer[0] - 0x30;
}
} else {
/* cid = ast_strdup(i->owner->cid.cid_num);*/ /* Here we get the Asterisk extension */
if (info) { /* info is >0 on outbound channel (second facility) */
struct capi_pvt *ii = capi_find_interface_by_plci(i->qsig_data.partner_plci);
cid = ast_strdup(i->cid);
cidlen = strlen(cid);
if (ii) {
/* send callers name to user B */
#ifdef CC_AST_HAS_VERSION_1_8
if (ii->owner->caller.id.name.valid ) {
name = ast_strdupa(S_COR(ii->owner->caller.id.name.valid, ii->owner->caller.id.name.str, ""));
namelength = strlen(name);
}
#else
if (ii->owner->cid.cid_name) {
name = ast_strdupa(ii->owner->cid.cid_name);
namelength = strlen(name);
}
#endif
}
} else { /* have to build first facility - send destination number back to inbound channel */
struct capi_pvt *ii = capi_find_interface_by_plci(i->qsig_data.partner_plci);
cid = ast_strdup(ii->dnid);
cidlen = strlen(cid);
if (ii) {
/* send destination name to user A */
if (ii->qsig_data.dnameid) {
name = ast_strdupa(ii->qsig_data.dnameid);
namelength = strlen(name);
}
}
}
if (!info)
icanswer = i->qsig_data.calltransfer_onring % 1;
}
seqlen += cidlen;
if (namelength)
seqlen += 4 + namelength;
c[ix++] = ASN1_SEQUENCE | ASN1_TF_CONSTRUCTED; /* start of SEQUENCE */
c[ix++] = seqlen;
c[ix++] = ASN1_ENUMERATED; /* End Designation */
c[ix++] = 1; /* length */
c[ix++] = info;
c[ix++] = (ASN1_TC_CONTEXTSPEC | ASN1_TF_CONSTRUCTED) + 0; /* val 0 - Source Caller ID struct */
c[ix++] = 5 + cidlen;
c[ix++] = ASN1_TC_CONTEXTSPEC; /* CallerID */
c[ix++] = cidlen;
memcpy(&c[ix], cid, cidlen);
ix += cidlen;
c[ix++] = ASN1_ENUMERATED; /* Screening Indicator */
c[ix++] = 1; /* length */
c[ix++] = 1; /* 01 = userProvidedVerifiedAndPassed ...we hope so */
{
if (namelength) {
c[ix++] = (ASN1_TC_CONTEXTSPEC | ASN1_TF_CONSTRUCTED) + 1; /* val 1 - Source Caller ID struct */
c[ix++] = 2 + namelength;
c[ix++] = ASN1_OCTETSTRING; /* CallerID */
c[ix++] = namelength;
memcpy(&c[ix], name, namelength);
ix += namelength;
}
}
c[ix++] = ASN1_ENUMERATED; /* val 3 - wait for connect ? */
c[ix++] = 1;
c[ix++] = icanswer;
/* end of SEQUENCE */
/* there are optional data possible here */
invoke->id = 12;
invoke->descr_type = -1;
invoke->type = 12; /* Invoke Operation Code */
invoke->datalen = ix;
memcpy(invoke->data, c, ix);
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Sending QSIG_CT: %i->%s\n", info, cid);
if (cid)
ast_free(cid);
}
/*
* Decode Operation: 1.3.12.9.12 ECMA/ISDN/CALLTRANSFER
*
* This function decodes the call transfer facility
*
* We create an invoke struct with the complete encoded invoke.
*
* parameters
* buf is pointer to facility array, not used now
* idx current idx in facility array, not used now
* invoke struct, which contains encoded data from facility
* i is pointer to capi channel
* returns
* transfer to destination number
*/
unsigned int cc_qsig_decode_ecma_calltransfer(struct cc_qsig_invokedata *invoke, struct capi_pvt *i, struct cc_qsig_ctcomplete *ctc)
{
unsigned int datalength;
unsigned int seqlength = 0;
unsigned char *data = invoke->data;
int myidx = 0;
/* TODO: write more code */
char *ct_status_txt[] = { "ANSWERED", "ALERTING" };
char ct_name[ASN197NO_NAME_STRSIZE+1] = { "EMPTY" };
unsigned int namelength = 0;
int temp = 0;
ctc->endDesignation = primaryEnd;
ctc->redirectionNumber.partyNumber = NULL;
ctc->redirectionNumber.screeningInd = userProvidedNotScreened;
ctc->basicCallInfoElements = NULL;
ctc->redirectionName = NULL;
ctc->callStatus = answered;
ctc->argumentExtension = NULL; /* unhandled yet */
#define ct_err(x...) { cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * not Handling QSIG CALL TRANSFER - "x); return 0; }
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 "Handling QSIG CALL TRANSFER (id# %#x)\n", invoke->id);
if (data[myidx++] != (ASN1_SEQUENCE | ASN1_TC_UNIVERSAL | ASN1_TF_CONSTRUCTED)) { /* 0x30 */
/* We do not handle this, because it should start with an sequence tag */
ct_err("not a sequence\n");
}
/* This facility is encoded as SEQUENCE */
seqlength = data[myidx++];
datalength = invoke->datalen;
if (datalength < (seqlength+1)) {
ct_err("buffer error\n");
}
if (data[myidx++] == ASN1_ENUMERATED) {
ctc->endDesignation = cc_qsig_asn1_get_integer(data, &myidx);
} else {
ct_err("no endDesignation information.\n");
}
temp = cc_qsig_asn197ade_get_pns(data, &myidx, &ctc->redirectionNumber);
if (!temp) {
ct_err("error on decoding PresentedNumberScreened value.\n");
}
myidx += temp;
if (myidx < datalength) {
if (data[myidx] == ASN1_TC_APPLICATION) {
myidx++;
/* TODO: check size -> could be bigger than 256 bytes - MSB is set then */
ctc->basicCallInfoElements = ast_malloc(data[myidx]);
if (ctc->basicCallInfoElements) {
memcpy(ctc->basicCallInfoElements, &data[myidx+1], data[myidx] );
} else {
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * QSIG CALL TRANSFER - couldn't allocate memory for basicCallInfoElements.\n", (int)data[myidx]);
}
myidx += data[myidx] + 1;
}
}
if (myidx < datalength) {
if (data[myidx] != ASN1_ENUMERATED) { /* Maybe we get an name (OPTIONAL) */
myidx += cc_qsig_asn197no_get_name(ct_name, ASN197NO_NAME_STRSIZE+1, &namelength, &myidx, data );
if (namelength)
ctc->redirectionName = ast_strdup(ct_name);
}
}
if (myidx < datalength) {
if (data[myidx++] == ASN1_ENUMERATED) { /* Call Status */
ctc->callStatus = cc_qsig_asn1_get_integer(data, &myidx);
}
}
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Got QSIG CALL TRANSFER endDesignation: %i partyNumber: %s (ScreeningInd: %i), partyName: \"%s\", Call state: %s\n",
ctc->endDesignation, ctc->redirectionNumber.partyNumber, ctc->redirectionNumber.screeningInd, ctc->redirectionName, ct_status_txt[ctc->callStatus]);
return 1;
#undef ct_err
}
/*
* Encode Operation: 1.3.12.9.99 ECMA/ISDN/SINGLESTEPCALLTRANSFER
*
* This function encodes the single step call transfer facility
*
* We create an invoke struct with the complete encoded invoke.
*
* parameters
* buf is pointer to facility array, not used now
* idx current idx in facility array, not used now
* invoke struct, which contains encoded data for facility
* i is pointer to capi channel
* param is parameter from capicommand
* returns
* always 0
*/
void cc_qsig_encode_ecma_sscalltransfer(unsigned char * buf, unsigned int *idx, struct cc_qsig_invokedata *invoke, struct capi_pvt *i, char *param)
{
char *cidsrc, *ciddst;
int srclen, dstlen;
int seqlen = 12;
char c[255];
int ix = 0;
cidsrc = strsep(&param, COMMANDSEPARATOR);
srclen = strlen(cidsrc);
if (srclen > 20) /* HACK: stop action here, maybe we have invalid data */
srclen = 20;
ciddst = strsep(&param, COMMANDSEPARATOR);
dstlen = strlen(ciddst);
if (dstlen > 20) /* HACK: stop action here, maybe we have invalid data */
dstlen = 20;
seqlen += srclen + dstlen;
c[ix++] = ASN1_SEQUENCE | ASN1_TF_CONSTRUCTED; /* start of SEQUENCE */
c[ix++] = seqlen;
c[ix++] = ASN1_TC_CONTEXTSPEC; /* val 1 - Destination CallerID */
c[ix++] = dstlen;
memcpy(&c[ix], ciddst, dstlen);
ix += dstlen;
c[ix++] = ASN1_TC_CONTEXTSPEC | ASN1_TF_CONSTRUCTED; /* val 2 - Source Caller ID struct */
c[ix++] = 5 + srclen;
c[ix++] = ASN1_TC_CONTEXTSPEC; /* CallerID */
c[ix++] = srclen;
memcpy(&c[ix], cidsrc, srclen);
ix += srclen;
c[ix++] = ASN1_ENUMERATED; /* Screening Indicator */
c[ix++] = 1; /* length */
c[ix++] = 1; /* 01 = userProvidedVerifiedAndPassed ...we hope so */
c[ix++] = ASN1_BOOLEAN; /* val 3 - wait for connect ? */
c[ix++] = 1;
c[ix++] = 0;
/* end of SEQUENCE */
/* there are optional data possible here */
invoke->id = 99;
invoke->descr_type = -1;
invoke->type = 99;
invoke->datalen = ix;
memcpy(invoke->data, c, ix);
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Sending QSIG_SSCT: %s->%s\n", cidsrc, ciddst);
}
/*
* Handle Operation: 1.3.12.9.19 ECMA/ISDN/PATH REPLACEMENT PROPOSE
*
* This function decodes the PATH REPLACEMENT PROPOSE facility
* The datas will be copied in the some capi_pvt channel variables
*
* parameters
* invoke struct, which contains encoded data from facility
* i is pointer to capi channel
* returns
* nothing
*/
void cc_qsig_op_ecma_isdn_prpropose(struct cc_qsig_invokedata *invoke, struct capi_pvt *i)
{
unsigned int datalength;
unsigned int seqlength = 0;
int myidx = 0;
/* TODO: write more code */
char callid[4+1];
char reroutingnr[ASN197ADE_NUMDIGITS_STRSIZE+1];
int temp = 0;
callid[0] = 0;
reroutingnr[0] = 0;
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 "Handling QSIG PATH REPLACEMENT PROPOSE (id# %#x)\n", invoke->id);
if (invoke->data[myidx++] != (ASN1_SEQUENCE | ASN1_TC_UNIVERSAL | ASN1_TF_CONSTRUCTED)) { /* 0x30 */
/* We do not handle this, because it should start with an sequence tag */
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * not Handling QSIG REPLACEMENT PROPOSE - not a sequence\n");
return;
}
/* This facility is encoded as SEQUENCE */
seqlength = invoke->data[myidx++];
datalength = invoke->datalen;
if (datalength < (seqlength+1)) {
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * not Handling QSIG REPLACEMENT PROPOSE - buffer error\n");
return;
}
if (invoke->data[myidx++] == ASN1_NUMERICSTRING) {
int strsize;
strsize = cc_qsig_asn1_get_string((unsigned char*)&callid, sizeof(callid), &invoke->data[myidx]);
myidx += strsize +1;
} else {
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * not Handling QSIG REPLACEMENT PROPOSE - NUMERICSTRING expected\n");
return;
}
if (invoke->data[myidx++] == ASN1_TC_CONTEXTSPEC)
temp = cc_qsig_asn1_get_string((unsigned char*)&reroutingnr, sizeof(reroutingnr), &invoke->data[myidx]);
if (temp) {
myidx += temp;
} else {
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * not Handling QSIG REPLACEMENT PROPOSE - partyNumber expected (%i)\n", myidx);
return;
}
i->qsig_data.pr_propose_cid = ast_strdup(callid);
i->qsig_data.pr_propose_pn = ast_strdup(reroutingnr);
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Got QSIG_PATHREPLACEMENT_PROPOSE Call identity: %s, Party number: %s (%i)\n", callid, reroutingnr, temp);
return;
}
/*
* Encode Operation: 1.3.12.9.19 ECMA/ISDN/PATH REPLACEMENT PROPOSE
*
* This function encodes the path replacement propose
*
* We create an invoke struct with the complete encoded invoke.
*
* parameters
* buf is pointer to facility array, not used now
* idx current idx in facility array, not used now
* invoke struct, which contains encoded data for facility
* i is pointer to capi channel
* param is parameter from capicommand
* returns
* always 0
*/
void cc_qsig_encode_ecma_prpropose(unsigned char * buf, unsigned int *idx, struct cc_qsig_invokedata *invoke, struct capi_pvt *i, char *param)
{
int invokeop = 4;
char *callid, *reroutingnr;
int cidlen, rrnlen;
int seqlen = 4;
char c[255];
int ix = 0;
int res = 0;
int ii = 0;
struct rose_component *comp = NULL, *compstk[10];
int compsp = 0;
if (!i->qsig_data.pr_propose_cid)
return ;
if (!i->qsig_data.pr_propose_pn)
return ;
callid = i->qsig_data.pr_propose_cid;
reroutingnr = i->qsig_data.pr_propose_pn;
cidlen = strlen(callid);
rrnlen = strlen(reroutingnr);
seqlen += cidlen + rrnlen;
#if 0
c[ix++] = ASN1_SEQUENCE | ASN1_TF_CONSTRUCTED; /* start of SEQUENCE */
c[ix++] = seqlen;
c[ix++] = ASN1_NUMERICSTRING; /* val 1 - CallID */
c[ix++] = cidlen;
memcpy(&c[ix], callid, cidlen);
ix += cidlen;
c[ix++] = ASN1_TC_CONTEXTSPEC; /* val 2 - Rerouting number*/
c[ix++] = rrnlen;
memcpy(&c[ix], reroutingnr, rrnlen);
ix += rrnlen;
#else
ASN1_ADD_SIMPLE(comp, (ASN1_SEQUENCE | ASN1_TF_CONSTRUCTED), c, ii);
ASN1_PUSH(compstk, compsp, comp);
res = cc_qsig_asn1_add_string2(ASN1_NUMERICSTRING, &c[ii], sizeof(c) - ii, 20, callid, cidlen);
if (res < 0)
return;
ii += res;
res = cc_qsig_asn1_add_string2(ASN1_TC_CONTEXTSPEC, &c[ii], sizeof(c) - ii, 20, reroutingnr, rrnlen);
if (res < 0)
return;
ii += res;
ASN1_FIXUP(compstk, compsp, c, ii);
ix = ii;
#endif
/* end of SEQUENCE */
/* there are optional data possible here */
invoke->id = invokeop;
invoke->descr_type = -1;
invoke->type = invokeop;
invoke->datalen = ix;
memcpy(invoke->data, c, ix);
cc_qsig_verbose( 0, VERBOSE_PREFIX_4 " * Sending QSIG_PATHREPLACEMENT_PROPOSE: Call identity: %s, Party number: %s\n", callid, reroutingnr);
return;
}
void cc_qsig_encode_ecma_ccnr_req(unsigned char * buf, unsigned int *idx, struct cc_qsig_invokedata *invoke, struct capi_pvt *i, char *param)
{
int invokeop = 27;
int ii = 0;
unsigned char c[256];
struct rose_component *comp = NULL, *compstk[10];
int compsp = 0;
int ix = 0;
ASN1_ADD_SIMPLE(comp, (ASN1_TF_CONSTRUCTED | ASN1_SEQUENCE), c, ii);
ASN1_PUSH(compstk, compsp, comp);
#if 0 /* Constructed data - ECMAv1 HICOM/HIPATH */
ASN1_ADD_SIMPLE(comp, (ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTOR | ASN1_TAG_1), buffer, i);
ASN1_PUSH(compstk, compsp, comp);
res = asn1_string_encode(ASN1_OCTETSTRING, &buffer[i], sizeof(buffer)-i, 50, c->callername, namelen);
if (res < 0)
return -1;
i += res;
ASN1_FIXUP(compstk, compsp, buffer, i);
#endif
invoke->id = invokeop;
invoke->descr_type = -1;
invoke->type = invokeop;
invoke->datalen = ix;
memcpy(invoke->data, c, ix);
cc_qsig_verbose( 1, VERBOSE_PREFIX_4 " * Sending QSIG_CCNR_REQ\n");
return ;
}
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