RetroShare/libretroshare/src/pgp/pgphandler.h
2012-04-04 19:27:07 +00:00

112 lines
3.3 KiB
C++

// This class implements an abstract pgp handler to be used in RetroShare.
//
#include <stdint.h>
#include <string>
#include <list>
#include <map>
#include <util/rsthreads.h>
extern "C" {
#include <openpgpsdk/types.h>
#include <openpgpsdk/keyring.h>
#include <openpgpsdk/keyring_local.h>
}
typedef std::string (*PassphraseCallback)(const std::string& display_msg) ;
class PGPIdType
{
public:
static const int KEY_ID_SIZE = 8 ;
PGPIdType() {}
static PGPIdType fromUserId_hex(const std::string& hex_string) ;
static PGPIdType fromFingerprint_hex(const std::string& hex_string) ;
explicit PGPIdType(const unsigned char bytes[]) ;
std::string toStdString() const ;
uint64_t toUInt64() const ;
const unsigned char *toByteArray() const { return &bytes[0] ; }
private:
unsigned char bytes[KEY_ID_SIZE] ;
};
class PGPFingerprintType
{
public:
static const int KEY_FINGERPRINT_SIZE = 20 ;
static PGPFingerprintType fromFingerprint_hex(const std::string& hex_string) ;
explicit PGPFingerprintType(const unsigned char bytes[]) ;
std::string toStdString() const ;
const unsigned char *toByteArray() const { return &bytes[0] ; }
bool operator==(const PGPFingerprintType& fp) const
{
for(int i=0;i<KEY_FINGERPRINT_SIZE;++i)
if(fp.bytes[i] != bytes[i])
return false ;
return true ;
}
bool operator!=(const PGPFingerprintType& fp) const
{
return !operator==(fp) ;
}
PGPFingerprintType() {}
private:
unsigned char bytes[KEY_FINGERPRINT_SIZE] ;
};
class PGPHandler
{
public:
PGPHandler(const std::string& path_to_public_keyring, const std::string& path_to_secret_keyring,PassphraseCallback cb) ;
virtual ~PGPHandler() ;
/**
* @param ids list of gpg certificate ids (note, not the actual certificates)
*/
bool availableGPGCertificatesWithPrivateKeys(std::list<PGPIdType>& ids);
bool GeneratePGPCertificate(const std::string& name, const std::string& email, const std::string& passwd, PGPIdType& pgpId, std::string& errString) ;
bool LoadCertificateFromString(const std::string& pem, PGPIdType& gpg_id, std::string& error_string);
std::string SaveCertificateToString(const PGPIdType& id,bool include_signatures) ;
bool TrustCertificate(const PGPIdType& id, int trustlvl);
bool SignDataBin(const PGPIdType& id,const void *data, const uint32_t len, unsigned char *sign, unsigned int *signlen) ;
bool VerifySignBin(const void *data, uint32_t data_len, unsigned char *sign, unsigned int sign_len, const PGPFingerprintType& withfingerprint) ;
bool getKeyFingerprint(const PGPIdType& id,PGPFingerprintType& fp) const ;
// Debug stuff.
virtual void printKeys() const ;
private:
static std::string makeRadixEncodedPGPKey(const ops_keydata_t *key) ;
static ops_keyring_t *allocateOPSKeyring() ;
static void addNewKeyToOPSKeyring(ops_keyring_t*, const ops_keydata_t&) ;
const ops_keydata_t *getPublicKey(const PGPIdType&) const ;
const ops_keydata_t *getSecretKey(const PGPIdType&) const ;
RsMutex pgphandlerMtx ;
ops_keyring_t *_pubring ;
ops_keyring_t *_secring ;
std::map<uint64_t,uint32_t> _public_keyring_map ; // used for fast access to keys. Gives the index in the keyring.
std::map<uint64_t,uint32_t> _secret_keyring_map ;
const std::string _pubring_path ;
const std::string _secring_path ;
PassphraseCallback _passphrase_callback ;
};