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#include "commonheaders.h"
HMODULE hpgpsdk;
UINT pgpVer;
HRSRC hRS_pgp;
PBYTE pRS_pgp;
int __cdecl _pgp_init(void);
int __cdecl _pgp_done(void);
int __cdecl _pgp_open_keyrings(LPSTR,LPSTR);
int __cdecl _pgp_close_keyrings(void);
int __cdecl _pgp_get_version(void);
LPSTR __cdecl _pgp_get_error(void);
int __cdecl _pgp_size_keyid(void);
PVOID __cdecl _pgp_select_keyid(HWND,LPSTR);
LPSTR __cdecl _pgp_encrypt_keydb(LPCSTR,PVOID);
LPSTR __cdecl _pgp_decrypt_keydb(LPCSTR);
//int __cdecl _pgp_check_key(LPCSTR);
LPSTR __cdecl _pgp_encrypt_key(LPCSTR,LPCSTR);
LPSTR __cdecl _pgp_decrypt_key(LPCSTR,LPCSTR);
int (__cdecl *p_pgp_init)(void);
int (__cdecl *p_pgp_done)(void);
int (__cdecl *p_pgp_open_keyrings)(LPSTR,LPSTR);
int (__cdecl *p_pgp_close_keyrings)(void);
int (__cdecl *p_pgp_get_version)(void);
LPSTR (__cdecl *p_pgp_get_error)(void);
int (__cdecl *p_pgp_size_keyid)(void);
PVOID (__cdecl *p_pgp_select_keyid)(HWND,LPSTR);
LPSTR (__cdecl *p_pgp_encrypt_keydb)(LPCSTR,PVOID);
LPSTR (__cdecl *p_pgp_decrypt_keydb)(LPCSTR);
//int (__cdecl *p_pgp_check_key)(LPCSTR);
LPSTR (__cdecl *p_pgp_encrypt_key)(LPCSTR,LPCSTR);
LPSTR (__cdecl *p_pgp_decrypt_key)(LPCSTR,LPCSTR);
#define GPA(x) \
{ \
*((PVOID*)&p##x) = (PVOID)GetProcAddress(mod, TEXT(#x)); \
if (!p##x) return 0; \
}
int load_pgpsdk_dll(HMODULE mod) {
GPA(_pgp_init);
GPA(_pgp_done);
GPA(_pgp_open_keyrings);
GPA(_pgp_close_keyrings);
GPA(_pgp_get_version);
GPA(_pgp_get_error);
GPA(_pgp_size_keyid);
GPA(_pgp_select_keyid);
GPA(_pgp_encrypt_keydb);
GPA(_pgp_decrypt_keydb);
GPA(_pgp_encrypt_key);
GPA(_pgp_decrypt_key);
return 1;
}
#undef GPA
#define GPA(x) \
{ \
*((PVOID*)&p##x) = (PVOID)MemGetProcAddress(mod, TEXT(#x)); \
if (!p##x) { \
return 0; \
} \
}
int load_pgpsdk_mem(HMODULE mod) {
GPA(_pgp_init);
GPA(_pgp_done);
GPA(_pgp_open_keyrings);
GPA(_pgp_close_keyrings);
GPA(_pgp_get_version);
GPA(_pgp_get_error);
GPA(_pgp_size_keyid);
GPA(_pgp_select_keyid);
GPA(_pgp_encrypt_keydb);
GPA(_pgp_decrypt_keydb);
GPA(_pgp_encrypt_key);
GPA(_pgp_decrypt_key);
return 1;
}
#undef GPA
BOOL load_pgp_sdk(int type, int id)
{
int r; char t[MAX_PATH];
pgpVer = 0;
if ( isVista ) {
sprintf(t,"%s\\pgpsdkw.dll",TEMP);
ExtractFile(t,type,id);
hpgpsdk = LoadLibraryA(t);
}
else {
hRS_pgp = FindResource( g_hInst, MAKEINTRESOURCE(id), MAKEINTRESOURCE(type) );
pRS_pgp = (PBYTE) LoadResource( g_hInst, hRS_pgp ); LockResource( pRS_pgp );
hpgpsdk = MemLoadLibrary( pRS_pgp );
}
if (hpgpsdk) {
if ( isVista ) load_pgpsdk_dll(hpgpsdk);
else load_pgpsdk_mem(hpgpsdk);
r = p_pgp_init();
if (r) {
pgpVer = p_pgp_get_version();
return r;
}
if ( isVista ) {
FreeLibrary(hpgpsdk);
}
else {
MemFreeLibrary(hpgpsdk);
UnlockResource( pRS_pgp );
FreeResource( pRS_pgp );
}
}
return 0;
}
int __cdecl pgp_init()
{
int r;
if ( !hPGPPRIV ) {
// create context for private pgp keys
hPGPPRIV = (HANDLE) cpp_create_context(MODE_PGP|MODE_PRIV_KEY);
pCNTX tmp = (pCNTX) hPGPPRIV;
tmp->pdata = (PBYTE) malloc(sizeof(PGPDATA));
memset(tmp->pdata,0,sizeof(PGPDATA));
}
if ( r = load_pgp_sdk(666,6) ) return r;
if ( r = load_pgp_sdk(666,8) ) return r;
hpgpsdk = 0;
return 0;
}
int __cdecl pgp_done()
{
int r = 0;
pgpVer = 0;
if (hpgpsdk) {
r = p_pgp_done();
if ( isVista ) {
FreeLibrary(hpgpsdk);
}
else {
MemFreeLibrary(hpgpsdk);
UnlockResource( pRS_pgp );
FreeResource( pRS_pgp );
}
hpgpsdk = 0;
}
return r;
}
int __cdecl pgp_open_keyrings(LPSTR PubRingPath, LPSTR SecRingPath)
{
return p_pgp_open_keyrings(PubRingPath,SecRingPath);
}
int __cdecl pgp_close_keyrings()
{
return p_pgp_close_keyrings();
}
int __cdecl pgp_get_version()
{
return pgpVer;
}
LPSTR __cdecl pgp_get_error()
{
return p_pgp_get_error();
}
LPSTR __cdecl pgp_encrypt(pCNTX ptr, LPCSTR szPlainMsg)
{
ptr->error = ERROR_NONE;
pPGPDATA p = (pPGPDATA) ptr->pdata;
SAFE_FREE(ptr->tmp);
LPSTR szEncMsg;
if (p->pgpKey)
szEncMsg = p_pgp_encrypt_key(szPlainMsg,(LPCSTR)p->pgpKey);
else
szEncMsg = p_pgp_encrypt_keydb(szPlainMsg,p->pgpKeyID);
if (!szEncMsg) return 0;
ptr->tmp = (LPSTR) _strdup(szEncMsg);
LocalFree((LPVOID)szEncMsg);
return ptr->tmp;
}
LPSTR __cdecl pgp_decrypt(pCNTX ptr, LPCSTR szEncMsg)
{
ptr->error = ERROR_NONE;
SAFE_FREE(ptr->tmp);
LPSTR szPlainMsg = p_pgp_decrypt_keydb(szEncMsg);
if (!szPlainMsg) {
ptr = get_context_on_id(hPGPPRIV); // find private pgp keys
if (ptr) {
pPGPDATA p = (pPGPDATA) ptr->pdata;
if (p->pgpKey)
szPlainMsg = p_pgp_decrypt_key(szEncMsg,(LPCSTR)p->pgpKey);
}
if (!szPlainMsg) return NULL;
}
ptr->tmp = (LPSTR) _strdup(szPlainMsg);
LocalFree((LPVOID)szPlainMsg);
return ptr->tmp;
}
LPSTR __cdecl pgp_encode(HANDLE context, LPCSTR szPlainMsg)
{
pCNTX ptr = get_context_on_id(context); if (!ptr) return NULL;
pPGPDATA p = (pPGPDATA) cpp_alloc_pdata(ptr);
if ( !p->pgpKeyID && !p->pgpKey ) {
ptr->error = ERROR_NO_PGP_KEY;
return NULL;
}
// utf8 message: encrypt.
return pgp_encrypt(ptr, szPlainMsg);
}
LPSTR __cdecl pgp_decode(HANDLE context, LPCSTR szEncMsg)
{
pCNTX ptr = get_context_on_id(context);
if (!ptr) return NULL;
LPSTR szNewMsg = NULL;
LPSTR szOldMsg = pgp_decrypt(ptr, szEncMsg);
if (szOldMsg) {
if ( !is_7bit_string(szOldMsg) && !is_utf8_string(szOldMsg) ) {
size_t slen = strlen(szOldMsg)+1;
LPWSTR wszMsg = (LPWSTR) alloca(slen*sizeof(WCHAR));
MultiByteToWideChar(CP_ACP, 0, szOldMsg, -1, wszMsg, slen*sizeof(WCHAR));
szNewMsg = _strdup(utf8encode(wszMsg));
}
else szNewMsg = _strdup(szOldMsg);
}
SAFE_FREE(ptr->tmp);
ptr->tmp = szNewMsg;
return szNewMsg;
}
int __cdecl pgp_set_priv_key(LPCSTR LocalKey)
{
return pgp_set_key(hPGPPRIV,LocalKey);
}
int __cdecl pgp_set_key(HANDLE context, LPCSTR RemoteKey)
{
pCNTX ptr = get_context_on_id(context); if (!ptr) return 0;
pPGPDATA p = (pPGPDATA) cpp_alloc_pdata(ptr);
ptr->error = ERROR_NONE;
SAFE_FREE(p->pgpKey);
p->pgpKey = (PBYTE) _strdup(RemoteKey);
return 1;
}
int __cdecl pgp_set_keyid(HANDLE context, PVOID RemoteKeyID)
{
pCNTX ptr = get_context_on_id(context); if (!ptr) return 0;
pPGPDATA p = (pPGPDATA) cpp_alloc_pdata(ptr);
ptr->error = ERROR_NONE;
SAFE_FREE(p->pgpKeyID);
p->pgpKeyID = (PBYTE) malloc(p_pgp_size_keyid());
memcpy(p->pgpKeyID,RemoteKeyID,p_pgp_size_keyid());
return 1;
}
int __cdecl pgp_size_keyid()
{
return p_pgp_size_keyid();
}
PVOID __cdecl pgp_select_keyid(HWND hDlg,LPSTR szKeyID)
{
return p_pgp_select_keyid(hDlg,szKeyID);
}
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