int ILibProcessXMLNodeList(struct ILibXMLNode *nodeList)
{
int RetVal = 0;
struct ILibXMLNode *current = nodeList;
struct ILibXMLNode *temp;
void *TagStack;
ILibCreateStack(&TagStack);
while(current!=NULL)
{
if(current->StartTag!=0)
{
// Start Tag
current->Parent = ILibPeekStack(&TagStack);
ILibPushStack(&TagStack,current);
}
else
{
// Close Tag
temp = (struct ILibXMLNode*)ILibPopStack(&TagStack);
if(temp!=NULL)
{
if(temp->NameLength==current->NameLength && memcmp(temp->Name,current->Name,current->NameLength)==0)
{
if(current->Next!=NULL)
{
if(current->Next->StartTag!=0)
{
temp->Peer = current->Next;
}
}
temp->ClosingTag = current;
}
else
{
// Illegal Close Tag Order
RetVal = -2;
break;
}
}
else
{
// Illegal Close Tag
RetVal = -1;
break;
}
}
current = current->Next;
}
if(TagStack!=NULL)
{
// Incomplete XML
RetVal = -3;
}
return(RetVal);
}
int ILibReadInnerXML(struct ILibXMLNode *node, char **RetVal)
{
struct ILibXMLNode *x = node;
int length = 0;
void *TagStack;
ILibCreateStack(&TagStack);
do
{
if(x->StartTag!=0) {ILibPushStack(&TagStack,x);}
x = x->Next;
}while(!(x->StartTag==0 && ILibPopStack(&TagStack)==node && x->NameLength==node->NameLength && memcmp(x->Name,node->Name,node->NameLength)==0));
length = (int)((char*)x->Reserved - (char*)node->Reserved - 1);
if(length<0) {length=0;}
*RetVal = (char*)node->Reserved;
return(length);
}
int ILibWrapper_SdpToBlock(char* sdp, int sdpLen, int *isActive, char **username, char **password, char **block)
{
struct parser_result *pr;
struct parser_result_field *f;
int ptr;
int blockLen;
void* candidates = NULL;
char* lines;
char* dtlshash = NULL;
int dtlsHashLen = 0;
int candidatecount = 0;
int BlockFlags = 0;
*isActive = 0;
*username = NULL;
*password = NULL;
ILibCreateStack(&candidates);
lines = ILibString_Replace(sdp, sdpLen, "\n", 1, "\r", 1);
pr = ILibParseString(lines, 0, sdpLen, "\r", 1);
f = pr->FirstResult;
while(f!=NULL)
{
if(f->datalength == 0) { f = f->NextResult; continue; }
f->data[f->datalength] = 0;
if(strcmp(f->data, "a=setup:passive")==0)
{
BlockFlags |= ILibWebRTC_SDP_Flags_DTLS_SERVER;
}
else if(strcmp(f->data, "a=setup:active")==0 || strcmp(f->data, "a=setup:actpass")==0)
{
*isActive = 1;
}
if(f->datalength > 12 && strncmp(f->data, "a=ice-ufrag:", 12)==0) {*username = f->data + 12;}
if(f->datalength > 10 && strncmp(f->data, "a=ice-pwd:", 10)==0) {*password = f->data + 10;}
if(f->datalength > 22 && strncmp(f->data, "a=fingerprint:sha-256 ", 22)==0)
{
char* tmp = ILibString_Replace(f->data + 22, f->datalength - 22, ":", 1, "", 0);
dtlsHashLen = util_hexToBuf(tmp, strlen(tmp), tmp);
dtlshash = tmp;
}
if(f->datalength > 12 && strncmp(f->data, "a=candidate:", 12)==0)
{
struct parser_result* pr2 = ILibParseString(f->data, 0, f->datalength, " ", 1);
if(pr2->FirstResult->NextResult->datalength == 1 && pr2->FirstResult->NextResult->data[0] == '1' && pr2->FirstResult->NextResult->NextResult->datalength == 3 && strncasecmp(pr2->FirstResult->NextResult->NextResult->data, "UDP", 3)==0)
//if(pr2->FirstResult->NextResult->NextResult->datalength == 3 && strncasecmp(pr2->FirstResult->NextResult->NextResult->data, "UDP", 3)==0)
{
char* candidateData;
struct parser_result *pr3;
char *tmp = pr2->FirstResult->NextResult->NextResult->NextResult->NextResult->NextResult->data;
unsigned short port;
tmp[pr2->FirstResult->NextResult->NextResult->NextResult->NextResult->NextResult->datalength] = 0;
port = atoi(tmp);
pr3 = ILibParseString(pr2->FirstResult->NextResult->NextResult->NextResult->NextResult->data, 0, pr2->FirstResult->NextResult->NextResult->NextResult->NextResult->datalength, ".", 1);
if (pr3->NumResults == 4)
{
candidateData = pr3->FirstResult->data;
pr3->FirstResult->data[pr3->FirstResult->datalength] = 0;
candidateData[0] = (char)atoi(pr3->FirstResult->data);
pr3->FirstResult->NextResult->data[pr3->FirstResult->NextResult->datalength] = 0;
candidateData[1] = (char)atoi(pr3->FirstResult->NextResult->data);
pr3->FirstResult->NextResult->NextResult->data[pr3->FirstResult->NextResult->NextResult->datalength] = 0;
candidateData[2] = (char)atoi(pr3->FirstResult->NextResult->NextResult->data);
pr3->FirstResult->NextResult->NextResult->NextResult->data[pr3->FirstResult->NextResult->NextResult->NextResult->datalength] = 0;
candidateData[3] = (char)atoi(pr3->FirstResult->NextResult->NextResult->NextResult->data);
((unsigned short*)candidateData)[2] = htons(port);
candidateData[6] = 0;
ILibPushStack(&candidates, candidateData);
++candidatecount;
}
ILibDestructParserResults(pr3);
}
ILibDestructParserResults(pr2);
}
f = f->NextResult;
}
if (*username == NULL || *password == NULL || dtlshash == NULL || candidatecount == 0)
{
*block = NULL;
return(0);
}
blockLen = 6 + strlen(*username)+1 + strlen(*password)+1 + dtlsHashLen + 1 + (candidatecount*6)+1;
if((*block = (char*)malloc(blockLen))==NULL){ILIBCRITICALEXIT(254);}
ptr = 0;
((unsigned short*)*block+ptr)[0] = htons(1);
ptr += 2;
((unsigned int*)(*block+ptr))[0] = htonl(BlockFlags);
ptr += 4;
(*block)[ptr] = (char)strlen(*username);
ptr += 1;
memcpy(*block+ptr, *username, strlen(*username));
ptr += strlen(*username);
(*block)[ptr] = (char)strlen(*password);
ptr += 1;
memcpy(*block+ptr, *password, strlen(*password));
ptr += strlen(*password);
(*block)[ptr] = (char)dtlsHashLen;
ptr += 1;
memcpy(*block+ptr, dtlshash, dtlsHashLen);
ptr += dtlsHashLen;
(*block)[ptr] = (char)candidatecount;
ptr += 1;
while(ILibPeekStack(&candidates)!=NULL)
{
memcpy(*block+ptr, ILibPopStack(&candidates), 6);
ptr += 6;
}
ILibDestructParserResults(pr);
free(lines);
if(dtlshash!=NULL) {free(dtlshash);}
return(ptr);
}