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#include "commonheaders.h"
// get context data on context id
pCNTX get_context_on_id(HANDLE context)
{
if (context) {
pCNTX cntx = (pCNTX)context;
if (cntx->header == HEADER && cntx->footer == FOOTER)
return cntx;
#if defined(_DEBUG) || defined(NETLIB_LOG)
Sent_NetLog("get_context_on_id: corrupted context %08X", cntx);
#endif
}
return NULL;
}
// create context, return context id
HANDLE __cdecl cpp_create_context(int mode)
{
pCNTX cntx = (pCNTX)malloc(sizeof(CNTX));
memset(cntx, 0, sizeof(CNTX)); // î÷èùàåì âûäåëåííûé áëîê
cntx->header = HEADER;
cntx->footer = FOOTER;
cntx->mode = mode;
return (HANDLE)cntx;
}
// delete context
void __cdecl cpp_delete_context(HANDLE context)
{
pCNTX tmp = get_context_on_id(context);
if (tmp) { // ïîìå÷àåì íà óäàëåíèå
cpp_free_keys(tmp);
free(tmp);
}
}
// reset context
void __cdecl cpp_reset_context(HANDLE context)
{
pCNTX tmp = get_context_on_id(context);
if (tmp)
cpp_free_keys(tmp);
}
// allocate pdata
PBYTE cpp_alloc_pdata(pCNTX ptr)
{
if (!ptr->pdata) {
if (ptr->mode & MODE_PGP) {
ptr->pdata = (PBYTE)malloc(sizeof(PGPDATA));
memset(ptr->pdata, 0, sizeof(PGPDATA));
}
else if (ptr->mode & MODE_GPG) {
ptr->pdata = (PBYTE)malloc(sizeof(GPGDATA));
memset(ptr->pdata, 0, sizeof(GPGDATA));
}
else if (ptr->mode & MODE_RSA) {
rsa_alloc(ptr);
}
else {
ptr->pdata = (PBYTE)malloc(sizeof(SIMDATA));
memset(ptr->pdata, 0, sizeof(SIMDATA));
}
}
return ptr->pdata;
}
// free memory from keys
void cpp_free_keys(pCNTX ptr)
{
mir_free(ptr->tmp);
ptr->tmp = 0;
cpp_alloc_pdata(ptr);
if (ptr->mode & MODE_PGP) {
pPGPDATA p = (pPGPDATA)ptr->pdata;
SAFE_FREE(p->pgpKeyID);
SAFE_FREE(p->pgpKey);
SAFE_FREE(ptr->pdata);
}
else if (ptr->mode & MODE_GPG) {
pGPGDATA p = (pGPGDATA)ptr->pdata;
SAFE_FREE(p->gpgKeyID);
SAFE_FREE(ptr->pdata);
}
else if (ptr->mode & MODE_RSA) {
if (rsa_free(ptr))
SAFE_DELETE(ptr->pdata);
}
else {
pSIMDATA p = (pSIMDATA)ptr->pdata;
SAFE_FREE(p->PubA);
SAFE_FREE(p->KeyA);
mir_free(p->KeyB);
SAFE_FREE(p->KeyX);
SAFE_FREE(p->KeyP);
SAFE_DELETE(p->dh);
SAFE_FREE(ptr->pdata);
}
}
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