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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2012-2013 ZeroTier Networks LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <iostream>
#include "node/Identity.hpp"
#include "node/Utils.hpp"
#include "node/C25519.hpp"
#include "node/SHA512.hpp"
#include "node/Dictionary.hpp"
using namespace ZeroTier;
static void printHelp(char *pn)
{
std::cout << "Usage: " << pn << " <command> [<args>]" << std::endl << std::endl;
std::cout << "Commands:" << std::endl;
std::cout << "\tgenerate [<identity.secret>] [<identity.public>]" << std::endl;
std::cout << "\tvalidate <identity.secret/public>" << std::endl;
std::cout << "\tgetpublic <identity.secret>" << std::endl;
std::cout << "\tsign <identity.secret> <file>" << std::endl;
std::cout << "\tverify <identity.secret/public> <file> <signature>" << std::endl;
std::cout << "\tsignupdate <identity.secret> <update>" << std::endl;
}
static Identity getIdFromArg(char *arg)
{
Identity id;
if ((strlen(arg) > 32)&&(arg[10] == ':')) { // identity is a literal on the command line
if (id.fromString(arg))
return id;
} else { // identity is to be read from a file
std::string idser;
if (Utils::readFile(arg,idser)) {
if (id.fromString(idser))
return id;
}
}
return Identity();
}
int main(int argc,char **argv)
{
if (argc < 2) {
printHelp(argv[0]);
return -1;
}
if (!strcmp(argv[1],"generate")) {
Identity id;
id.generate();
std::string idser = id.toString(true);
if (argc >= 3) {
if (!Utils::writeFile(argv[2],idser)) {
std::cerr << "Error writing to " << argv[2] << std::endl;
return -1;
} else std::cout << argv[2] << " written" << std::endl;
if (argc >= 4) {
idser = id.toString(false);
if (!Utils::writeFile(argv[3],idser)) {
std::cerr << "Error writing to " << argv[3] << std::endl;
return -1;
} else std::cout << argv[3] << " written" << std::endl;
}
} else std::cout << idser;
} else if (!strcmp(argv[1],"validate")) {
if (argc < 3) {
printHelp(argv[0]);
return -1;
}
Identity id = getIdFromArg(argv[2]);
if (!id) {
std::cerr << "Identity argument invalid or file unreadable: " << argv[2] << std::endl;
return -1;
}
if (!id.locallyValidate()) {
std::cerr << argv[2] << " FAILED validation." << std::endl;
return -1;
} else std::cout << argv[2] << " is a valid identity (full check performed)" << std::endl;
} else if (!strcmp(argv[1],"getpublic")) {
if (argc < 3) {
printHelp(argv[0]);
return -1;
}
Identity id = getIdFromArg(argv[2]);
if (!id) {
std::cerr << "Identity argument invalid or file unreadable: " << argv[2] << std::endl;
return -1;
}
std::cout << id.toString(false);
} else if (!strcmp(argv[1],"sign")) {
if (argc < 4) {
printHelp(argv[0]);
return -1;
}
Identity id = getIdFromArg(argv[2]);
if (!id) {
std::cerr << "Identity argument invalid or file unreadable: " << argv[2] << std::endl;
return -1;
}
if (!id.hasPrivate()) {
std::cerr << argv[2] << " does not contain a private key (must use private to sign)" << std::endl;
return -1;
}
std::string inf;
if (!Utils::readFile(argv[3],inf)) {
std::cerr << argv[3] << " is not readable" << std::endl;
return -1;
}
C25519::Signature signature = id.sign(inf.data(),inf.length());
std::cout << Utils::hex(signature.data,signature.size());
} else if (!strcmp(argv[1],"verify")) {
if (argc < 4) {
printHelp(argv[0]);
return -1;
}
Identity id = getIdFromArg(argv[2]);
if (!id) {
std::cerr << "Identity argument invalid or file unreadable: " << argv[2] << std::endl;
return -1;
}
std::string inf;
if (!Utils::readFile(argv[3],inf)) {
std::cerr << argv[3] << " is not readable" << std::endl;
return -1;
}
std::string signature(Utils::unhex(argv[4]));
if ((signature.length() > ZT_ADDRESS_LENGTH)&&(id.verify(inf.data(),inf.length(),signature.data(),signature.length()))) {
std::cout << argv[3] << " signature valid" << std::endl;
} else {
std::cerr << argv[3] << " signature check FAILED" << std::endl;
return -1;
}
} else if (!strcmp(argv[1],"signupdate")) {
Identity id = getIdFromArg(argv[2]);
if (!id) {
std::cerr << "Identity argument invalid or file unreadable: " << argv[2] << std::endl;
return -1;
}
std::string update;
if (!Utils::readFile(argv[3],update)) {
std::cerr << argv[3] << " is not readable" << std::endl;
return -1;
}
unsigned char sha512[64];
SHA512::hash(sha512,update.data(),update.length());
char *atLastSep = strrchr(argv[3],ZT_PATH_SEPARATOR);
std::string nameAndSha((atLastSep) ? (atLastSep + 1) : argv[3]);
std::cout << "Signing filename '" << nameAndSha << "' plus SHA-512 digest " << Utils::hex(sha512,64) << std::endl;
nameAndSha.append((const char *)sha512,64);
C25519::Signature signature(id.sign(nameAndSha.data(),nameAndSha.length()));
Dictionary sig;
sig["sha512"] = Utils::hex(sha512,64);
sig["sha512_ed25519"] = Utils::hex(signature.data,signature.size());
sig["signedBy"] = id.address().toString();
std::cout << "-- .sig file contents:" << std::endl << sig.toString() << "--" << std::endl;
std::string sigPath(argv[3]);
sigPath.append(".sig");
if (!Utils::writeFile(sigPath.c_str(),sig.toString())) {
std::cerr << "Could not write " << sigPath << std::endl;
return -1;
}
std::cout << "Wrote " << sigPath << std::endl;
} else {
printHelp(argv[0]);
return -1;
}
return 0;
}
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