patched openpgpsdkfor c++ compilation, added test program, started retroshare PGPHandler component

git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-OpenPGP@5050 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/pgp/pgphandler.cc

@@ -0,0 +1,89 @@
+#include <stdexcept>
+#include <sstream>
+#include <iostream>
+#include <iomanip>
+#include <stdlib.h>
+
+extern "C" {
+#include <openpgpsdk/util.h>
+}
+#include "pgphandler.h"
+
+std::string	PGPIdType::toStdString() const
+{
+	std::ostringstream tmpout;
+
+	for(int j = 0; j < KEY_ID_SIZE; j++)
+		tmpout << std::setw(2) << std::setfill('0') << std::hex << (int)bytes[j] ;
+
+	return tmpout.str() ;
+}
+
+PGPIdType::PGPIdType(const std::string& s)
+{
+	int n=0;
+	if(s.length() != KEY_ID_SIZE*2)
+		throw std::runtime_error("PGPIdType::PGPIdType: can only init from 16 chars hexadecimal string") ;
+
+	for(int i = 0; i < KEY_ID_SIZE; ++i)
+	{
+		bytes[i] = 0 ;
+
+		for(int k=0;k<2;++k)
+		{
+			char b = s[n++] ;
+
+			if(b >= 'A' && b <= 'F')
+				bytes[i] += (b-'A'+10) << 4*(1-k) ;
+			else if(b >= 'a' && b <= 'f')
+				bytes[i] += (b-'a'+10) << 4*(1-k) ;
+			else if(b >= '0' && b <= '9')
+				bytes[i] += (b-'0') << 4*(1-k) ;
+			else
+				throw std::runtime_error("PGPIdType::Sha1CheckSum: can't init from non pure hexadecimal string") ;
+		}
+	}
+}
+
+uint64_t PGPIdType::toUInt64() const
+{
+	uint64_t res = 0  ;
+
+	for(int i=0;i<KEY_ID_SIZE;++i)
+		res = (res << 8) + bytes[i] ;
+
+	return res ;
+}
+
+PGPHandler::PGPHandler(const std::string& pubring, const std::string& secring)
+	:_pubring_path(pubring),_secring_path(secring),
+	pgphandlerMtx(std::string("PGPHandler"))
+{
+	// Allocate public and secret keyrings.
+	// 
+	_pubring = (ops_keyring_t*)malloc(sizeof(ops_keyring_t)) ;
+	_secring = (ops_keyring_t*)malloc(sizeof(ops_keyring_t)) ;
+
+	// Read public and secret keyrings from supplied files.
+	//
+	if(ops_false == ops_keyring_read_from_file(_pubring, false, pubring.c_str()))
+		throw std::runtime_error("PGPHandler::readKeyRing(): cannot read pubring.") ;
+
+	std::cerr << "Pubring read successfully." << std::endl;
+
+	if(ops_false == ops_keyring_read_from_file(_secring, false, secring.c_str()))
+		throw std::runtime_error("PGPHandler::readKeyRing(): cannot read secring.") ;
+
+	std::cerr << "Secring read successfully." << std::endl;
+}
+
+PGPHandler::~PGPHandler()
+{
+	std::cerr << "Freeing PGPHandler. Deleting keyrings." << std::endl;
+
+	ops_keyring_free(_pubring) ;
+	ops_keyring_free(_secring) ;
+
+	free(_pubring) ;
+	free(_secring) ;
+}

libretroshare/src/pgp/pgphandler.h

@@ -0,0 +1,61 @@
+// This class implements an abstract pgp handler to be used in RetroShare.
+//
+#include <stdint.h>
+#include <string>
+#include <list>
+#include <util/rsthreads.h>
+
+extern "C" {
+#include <openpgpsdk/types.h>
+#include <openpgpsdk/keyring.h>
+}
+
+class PGPIdType
+{
+	public:
+		static const int KEY_ID_SIZE = 8 ;
+
+		PGPIdType(const std::string& hex_string) ;
+		PGPIdType(const unsigned char bytes[]) ;
+
+		std::string toStdString() const ;
+		uint64_t toUInt64() const ;
+
+	private:
+		unsigned char bytes[KEY_ID_SIZE] ;
+};
+
+class PGPHandler
+{
+	public:
+		PGPHandler(const std::string& path_to_public_keyring, const std::string& path_to_secret_keyring) ;
+
+		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);
+
+		virtual bool SignDataBin(const void *data, const uint32_t len, unsigned char *sign, unsigned int *signlen) { return false ; }
+		virtual bool VerifySignBin(const void*, uint32_t, unsigned char*, unsigned int, const std::string &withfingerprint) { return false ; }
+
+		// Debug stuff.
+		virtual bool printKeys() { return false;}
+
+	private:
+		RsMutex pgphandlerMtx ;
+
+		ops_keyring_t *_pubring ;
+		ops_keyring_t *_secring ;
+
+		const std::string _pubring_path ;
+		const std::string _secring_path ;
+};

libretroshare/src/pgp/test_pgp_handler.cc

@@ -0,0 +1,25 @@
+// COMPILE_LINE: g++ -o test_pgp_handler test_pgp_handler.cc -I../../../openpgpsdk/include  -I../ -L../lib -lretroshare ../../../openpgpsdk/lib/libops.a -lssl -lcrypto -lbz2
+//
+#include <iostream>
+#include "pgphandler.h"
+
+int main(int argc,char *argv[])
+{
+	// test pgp ids.
+	//
+	PGPIdType id("3e5b22140ef56abb") ;
+
+	std::cerr << "Id is : " << std::hex << id.toUInt64() << std::endl;
+	std::cerr << "Id st : " << id.toStdString() << std::endl;
+
+	// test PGPHandler
+	//
+	// 0 - init
+	
+	static const std::string pubring = "pubring.gpg" ;
+	static const std::string secring = "secring.gpg" ;
+
+	PGPHandler pgph(pubring,secring) ;
+
+	return 0 ;
+}