-alertnotify=<cmd>

Runs a shell command when an AppliesToMe() alert is received.
%s in the <cmd> string is replaced with the alert.strStatusBar
message.
This commit is contained in:
Gavin Andresen 2013-03-19 14:08:21 -04:00
parent 1472308d67
commit e5f163a041
5 changed files with 119 additions and 36 deletions

View File

@ -2,6 +2,9 @@
// Alert system
//
#include <algorithm>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/foreach.hpp>
#include <map>
@ -165,7 +168,7 @@ CAlert CAlert::getAlertByHash(const uint256 &hash)
return retval;
}
bool CAlert::ProcessAlert()
bool CAlert::ProcessAlert(bool fThread)
{
if (!CheckSignature())
return false;
@ -229,9 +232,35 @@ bool CAlert::ProcessAlert()
// Add to mapAlerts
mapAlerts.insert(make_pair(GetHash(), *this));
// Notify UI if it applies to me
// Notify UI and -alertnotify if it applies to me
if(AppliesToMe())
{
uiInterface.NotifyAlertChanged(GetHash(), CT_NEW);
std::string strCmd = GetArg("-alertnotify", "");
if (!strCmd.empty())
{
// Alert text should be plain ascii coming from a trusted source, but to
// be safe we first strip anything not in safeChars, then add single quotes around
// the whole string before passing it to the shell:
std::string singleQuote("'");
// safeChars chosen to allow simple messages/URLs/email addresses, but avoid anything
// even possibly remotely dangerous like & or >
std::string safeChars("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890 .,;_/:?@");
std::string safeStatus;
for (std::string::size_type i = 0; i < strStatusBar.size(); i++)
{
if (safeChars.find(strStatusBar[i]) != std::string::npos)
safeStatus.push_back(strStatusBar[i]);
}
safeStatus = singleQuote+safeStatus+singleQuote;
boost::replace_all(strCmd, "%s", safeStatus);
if (fThread)
boost::thread t(runCommand, strCmd); // thread runs free
else
runCommand(strCmd);
}
}
}
printf("accepted alert %d, AppliesToMe()=%d\n", nID, AppliesToMe());

View File

@ -91,7 +91,7 @@ public:
bool AppliesToMe() const;
bool RelayTo(CNode* pnode) const;
bool CheckSignature() const;
bool ProcessAlert();
bool ProcessAlert(bool fThread = true);
/*
* Get copy of (active) alert object by hash. Returns a null alert if it is not found.

View File

@ -301,6 +301,7 @@ std::string HelpMessage()
" -rpcconnect=<ip> " + _("Send commands to node running on <ip> (default: 127.0.0.1)") + "\n" +
" -blocknotify=<cmd> " + _("Execute command when the best block changes (%s in cmd is replaced by block hash)") + "\n" +
" -walletnotify=<cmd> " + _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)") + "\n" +
" -alertnotify=<cmd> " + _("Execute command when a relevant alert is received (%s in cmd is replaced by message)") + "\n" +
" -upgradewallet " + _("Upgrade wallet to latest format") + "\n" +
" -keypool=<n> " + _("Set key pool size to <n> (default: 100)") + "\n" +
" -rescan " + _("Rescan the block chain for missing wallet transactions") + "\n" +

View File

@ -4,13 +4,12 @@
#include <boost/foreach.hpp>
#include <boost/test/unit_test.hpp>
#include <fstream>
#include "alert.h"
#include "serialize.h"
#include "util.h"
BOOST_AUTO_TEST_SUITE(Alert_tests)
#if 0
//
// alertTests contains 7 alerts, generated with this code:
@ -39,64 +38,89 @@ BOOST_AUTO_TEST_SUITE(Alert_tests)
SignAndSave(alert, "test/alertTests");
alert.setSubVer.clear();
alert.nID = 2;
++alert.nID;
alert.nCancel = 1;
alert.nPriority = 100;
alert.strStatusBar = "Alert 2, cancels 1";
SignAndSave(alert, "test/alertTests");
alert.nExpiration += 60;
++alert.nID;
SignAndSave(alert, "test/alertTests");
++alert.nID;
alert.nMinVer = 11;
alert.nMaxVer = 22;
SignAndSave(alert, "test/alertTests");
++alert.nID;
alert.strStatusBar = "Alert 2 for Satoshi 0.1.0";
alert.setSubVer.insert(std::string("/Satoshi:0.1.0/"));
SignAndSave(alert, "test/alertTests");
++alert.nID;
alert.nMinVer = 0;
alert.nMaxVer = 999999;
alert.strStatusBar = "Evil Alert'; /bin/ls; echo '";
alert.setSubVer.clear();
SignAndSave(alert, "test/alertTests");
}
#endif
std::vector<CAlert>
read_alerts(const std::string& filename)
struct ReadAlerts
{
std::vector<CAlert> result;
namespace fs = boost::filesystem;
fs::path testFile = fs::current_path() / "test" / "data" / filename;
#ifdef TEST_DATA_DIR
if (!fs::exists(testFile))
ReadAlerts()
{
testFile = fs::path(BOOST_PP_STRINGIZE(TEST_DATA_DIR)) / filename;
}
#endif
FILE* fp = fopen(testFile.string().c_str(), "rb");
if (!fp) return result;
CAutoFile filein = CAutoFile(fp, SER_DISK, CLIENT_VERSION);
if (!filein) return result;
try {
while (!feof(filein))
std::string filename("alertTests");
namespace fs = boost::filesystem;
fs::path testFile = fs::current_path() / "test" / "data" / filename;
#ifdef TEST_DATA_DIR
if (!fs::exists(testFile))
{
CAlert alert;
filein >> alert;
result.push_back(alert);
testFile = fs::path(BOOST_PP_STRINGIZE(TEST_DATA_DIR)) / filename;
}
}
catch (std::exception) { }
#endif
FILE* fp = fopen(testFile.string().c_str(), "rb");
if (!fp) return;
CAutoFile filein = CAutoFile(fp, SER_DISK, CLIENT_VERSION);
if (!filein) return;
try {
while (!feof(filein))
{
CAlert alert;
filein >> alert;
alerts.push_back(alert);
}
}
catch (std::exception) { }
}
~ReadAlerts() { }
static std::vector<std::string> read_lines(boost::filesystem::path filepath)
{
std::vector<std::string> result;
std::ifstream f(filepath.string().c_str());
std::string line;
while (std::getline(f,line))
result.push_back(line);
return result;
}
std::vector<CAlert> alerts;
};
BOOST_FIXTURE_TEST_SUITE(Alert_tests, ReadAlerts)
return result;
}
BOOST_AUTO_TEST_CASE(AlertApplies)
{
SetMockTime(11);
std::vector<CAlert> alerts = read_alerts("alertTests");
BOOST_FOREACH(const CAlert& alert, alerts)
{
BOOST_CHECK(alert.CheckSignature());
@ -129,4 +153,33 @@ BOOST_AUTO_TEST_CASE(AlertApplies)
SetMockTime(0);
}
// This uses sh 'echo' to test the -alertnotify function, writing to a
// /tmp file. So skip it on Windows:
#ifndef WIN32
BOOST_AUTO_TEST_CASE(AlertNotify)
{
SetMockTime(11);
boost::filesystem::path temp = GetTempPath() / "alertnotify.txt";
boost::filesystem::remove(temp);
mapArgs["-alertnotify"] = std::string("echo %s >> ") + temp.string();
BOOST_FOREACH(CAlert alert, alerts)
alert.ProcessAlert(false);
std::vector<std::string> r = read_lines(temp);
BOOST_CHECK_EQUAL(r.size(), 4u);
BOOST_CHECK_EQUAL(r[0], "Alert 1");
BOOST_CHECK_EQUAL(r[1], "Alert 2, cancels 1");
BOOST_CHECK_EQUAL(r[2], "Alert 2, cancels 1");
BOOST_CHECK_EQUAL(r[3], "Evil Alert; /bin/ls; echo "); // single-quotes should be removed
boost::filesystem::remove(temp);
SetMockTime(0);
}
#endif
BOOST_AUTO_TEST_SUITE_END()

Binary file not shown.