Original HUSH source code based on ZEC 1.0.8 . For historical purposes only!
https://hush.is
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
201 lines
6.0 KiB
201 lines
6.0 KiB
// Copyright (c) 2016 The Zcash developers
|
|
// Original code from: https://gist.github.com/laanwj/0e689cfa37b52bcbbb44
|
|
|
|
/*
|
|
|
|
To set up a new alert system
|
|
----------------------------
|
|
|
|
Create a new alert key pair:
|
|
openssl ecparam -name secp256k1 -genkey -param_enc explicit -outform PEM -out data.pem
|
|
|
|
Get the private key in hex:
|
|
openssl ec -in data.pem -outform DER | tail -c 279 | xxd -p -c 279
|
|
|
|
Get the public key in hex:
|
|
openssl ec -in data.pem -pubout -outform DER | tail -c 65 | xxd -p -c 65
|
|
|
|
Update the public keys found in chainparams.cpp.
|
|
|
|
|
|
To send an alert message
|
|
------------------------
|
|
|
|
Copy the private keys into alertkeys.h.
|
|
|
|
Modify the alert parameters and message found in this file.
|
|
|
|
Build and run to send the alert (after 60 seconds):
|
|
|
|
./zcashd -printtoconsole -sendalert
|
|
|
|
*/
|
|
|
|
/*
|
|
So you need to broadcast an alert...
|
|
... here's what to do:
|
|
|
|
1. Copy sendalert.cpp into your bitcoind build directory
|
|
|
|
2. Decrypt the alert keys
|
|
copy the decrypted file as alertkeys.h into the src/ directory.
|
|
|
|
3. Modify the alert parameters in sendalert.cpp
|
|
See the comments in the code for what does what.
|
|
|
|
4. Add sendalert.cpp to the src/Makefile.am so it gets built:
|
|
|
|
libbitcoin_server_a_SOURCES = \
|
|
sendalert.cpp \
|
|
... etc
|
|
|
|
5. Update init.cpp to launch the send alert thread.
|
|
Define the thread function as external at the top of init.cpp:
|
|
|
|
extern void ThreadSendAlert();
|
|
|
|
Add this call at the end of AppInit2:
|
|
|
|
threadGroup.create_thread(boost::bind(ThreadSendAlert));
|
|
|
|
6. build bitcoind, then run it with -printalert or -sendalert
|
|
I usually run it like this:
|
|
./bitcoind -printtoconsole -sendalert
|
|
|
|
One minute after starting up the alert will be broadcast. It is then
|
|
flooded through the network until the nRelayUntil time, and will be
|
|
active until nExpiration OR the alert is cancelled.
|
|
|
|
If you screw up something, send another alert with nCancel set to cancel
|
|
the bad alert.
|
|
*/
|
|
#include "main.h"
|
|
#include "net.h"
|
|
#include "alert.h"
|
|
#include "init.h"
|
|
|
|
#include "util.h"
|
|
#include "utiltime.h"
|
|
#include "key.h"
|
|
#include "clientversion.h"
|
|
#include "chainparams.h"
|
|
|
|
#include "alertkeys.h"
|
|
|
|
|
|
static const int64_t DAYS = 24 * 60 * 60;
|
|
|
|
void ThreadSendAlert()
|
|
{
|
|
if (!mapArgs.count("-sendalert") && !mapArgs.count("-printalert"))
|
|
return;
|
|
|
|
MilliSleep(60*1000); // Wait a minute so we get connected
|
|
|
|
//
|
|
// Alerts are relayed around the network until nRelayUntil, flood
|
|
// filling to every node.
|
|
// After the relay time is past, new nodes are told about alerts
|
|
// when they connect to peers, until either nExpiration or
|
|
// the alert is cancelled by a newer alert.
|
|
// Nodes never save alerts to disk, they are in-memory-only.
|
|
//
|
|
CAlert alert;
|
|
alert.nRelayUntil = GetTime() + 15 * 60;
|
|
alert.nExpiration = GetTime() + 365 * 60 * 60;
|
|
alert.nID = 1040; // use https://en.bitcoin.it/wiki/Alerts to keep track of alert IDs
|
|
alert.nCancel = 0; // cancels previous messages up to this ID number
|
|
|
|
// These versions are protocol versions
|
|
// 60002 : 0.7.*
|
|
// 70001 : 0.8.*
|
|
// 70002 : 0.9.*
|
|
alert.nMinVer = 70002;
|
|
alert.nMaxVer = 70002;
|
|
|
|
//
|
|
// main.cpp:
|
|
// 1000 for Misc warnings like out of disk space and clock is wrong
|
|
// 2000 for longer invalid proof-of-work chain
|
|
// Higher numbers mean higher priority
|
|
alert.nPriority = 5000;
|
|
alert.strComment = "";
|
|
alert.strStatusBar = "URGENT: Upgrade required: see https://z.cash";
|
|
|
|
// Set specific client version/versions here. If setSubVer is empty, no filtering on subver is done:
|
|
// alert.setSubVer.insert(std::string("/Satoshi:0.7.2/"));
|
|
|
|
// Sign
|
|
const CChainParams& chainparams = Params();
|
|
std::string networkID = chainparams.NetworkIDString();
|
|
bool fIsTestNet = networkID.compare("test") == 0;
|
|
std::vector<unsigned char> vchTmp(ParseHex(fIsTestNet ? pszTestNetPrivKey : pszPrivKey));
|
|
CPrivKey vchPrivKey(vchTmp.begin(), vchTmp.end());
|
|
|
|
CDataStream sMsg(SER_NETWORK, CLIENT_VERSION);
|
|
sMsg << *(CUnsignedAlert*)&alert;
|
|
alert.vchMsg = std::vector<unsigned char>(sMsg.begin(), sMsg.end());
|
|
CKey key;
|
|
if (!key.SetPrivKey(vchPrivKey, false))
|
|
{
|
|
printf("ThreadSendAlert() : key.SetPrivKey failed\n");
|
|
return;
|
|
}
|
|
if (!key.Sign(Hash(alert.vchMsg.begin(), alert.vchMsg.end()), alert.vchSig))
|
|
{
|
|
printf("ThreadSendAlert() : key.Sign failed\n");
|
|
return;
|
|
}
|
|
|
|
// Test
|
|
CDataStream sBuffer(SER_NETWORK, CLIENT_VERSION);
|
|
sBuffer << alert;
|
|
CAlert alert2;
|
|
sBuffer >> alert2;
|
|
if (!alert2.CheckSignature(chainparams.AlertKey()))
|
|
{
|
|
printf("ThreadSendAlert() : CheckSignature failed\n");
|
|
return;
|
|
}
|
|
assert(alert2.vchMsg == alert.vchMsg);
|
|
assert(alert2.vchSig == alert.vchSig);
|
|
alert.SetNull();
|
|
printf("\nThreadSendAlert:\n");
|
|
printf("hash=%s\n", alert2.GetHash().ToString().c_str());
|
|
printf("%s\n", alert2.ToString().c_str());
|
|
printf("vchMsg=%s\n", HexStr(alert2.vchMsg).c_str());
|
|
printf("vchSig=%s\n", HexStr(alert2.vchSig).c_str());
|
|
|
|
// Confirm
|
|
if (!mapArgs.count("-sendalert"))
|
|
return;
|
|
while (vNodes.size() < 1 && !ShutdownRequested())
|
|
MilliSleep(500);
|
|
if (ShutdownRequested())
|
|
return;
|
|
#ifdef QT_GUI
|
|
if (ThreadSafeMessageBox("Send alert?", "ThreadSendAlert", wxYES_NO | wxNO_DEFAULT) != wxYES)
|
|
return;
|
|
if (ThreadSafeMessageBox("Send alert, are you sure?", "ThreadSendAlert", wxYES_NO | wxNO_DEFAULT) != wxYES)
|
|
{
|
|
ThreadSafeMessageBox("Nothing sent", "ThreadSendAlert", wxOK);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
// Send
|
|
printf("ThreadSendAlert() : Sending alert\n");
|
|
int nSent = 0;
|
|
{
|
|
LOCK(cs_vNodes);
|
|
BOOST_FOREACH(CNode* pnode, vNodes)
|
|
{
|
|
if (alert2.RelayTo(pnode))
|
|
{
|
|
printf("ThreadSendAlert() : Sent alert to %s\n", pnode->addr.ToString().c_str());
|
|
nSent++;
|
|
}
|
|
}
|
|
}
|
|
printf("ThreadSendAlert() : Alert sent to %d nodes\n", nSent);
|
|
}
|
|
|