forked from lix-project/lix
197 lines
5.4 KiB
C++
197 lines
5.4 KiB
C++
#include <algorithm>
|
|
|
|
#include "command.hh"
|
|
#include "common-args.hh"
|
|
#include "eval.hh"
|
|
#include "globals.hh"
|
|
#include "legacy.hh"
|
|
#include "shared.hh"
|
|
#include "store-api.hh"
|
|
#include "progress-bar.hh"
|
|
#include "download.hh"
|
|
#include "finally.hh"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <ifaddrs.h>
|
|
#include <netdb.h>
|
|
#include <netinet/in.h>
|
|
|
|
extern std::string chrootHelperName;
|
|
|
|
void chrootHelper(int argc, char * * argv);
|
|
|
|
namespace nix {
|
|
|
|
/* Check if we have a non-loopback/link-local network interface. */
|
|
static bool haveInternet()
|
|
{
|
|
struct ifaddrs * addrs;
|
|
|
|
if (getifaddrs(&addrs))
|
|
return true;
|
|
|
|
Finally free([&]() { freeifaddrs(addrs); });
|
|
|
|
for (auto i = addrs; i; i = i->ifa_next) {
|
|
if (!i->ifa_addr) continue;
|
|
if (i->ifa_addr->sa_family == AF_INET) {
|
|
if (ntohl(((sockaddr_in *) i->ifa_addr)->sin_addr.s_addr) != INADDR_LOOPBACK) {
|
|
return true;
|
|
}
|
|
} else if (i->ifa_addr->sa_family == AF_INET6) {
|
|
if (!IN6_IS_ADDR_LOOPBACK(&((sockaddr_in6 *) i->ifa_addr)->sin6_addr) &&
|
|
!IN6_IS_ADDR_LINKLOCAL(&((sockaddr_in6 *) i->ifa_addr)->sin6_addr))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
std::string programPath;
|
|
|
|
struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
|
|
{
|
|
bool printBuildLogs = false;
|
|
bool useNet = true;
|
|
|
|
NixArgs() : MultiCommand(*RegisterCommand::commands), MixCommonArgs("nix")
|
|
{
|
|
mkFlag()
|
|
.longName("help")
|
|
.description("show usage information")
|
|
.handler([&]() { showHelpAndExit(); });
|
|
|
|
mkFlag()
|
|
.longName("help-config")
|
|
.description("show configuration options")
|
|
.handler([&]() {
|
|
std::cout << "The following configuration options are available:\n\n";
|
|
Table2 tbl;
|
|
std::map<std::string, Config::SettingInfo> settings;
|
|
globalConfig.getSettings(settings);
|
|
for (const auto & s : settings)
|
|
tbl.emplace_back(s.first, s.second.description);
|
|
printTable(std::cout, tbl);
|
|
throw Exit();
|
|
});
|
|
|
|
mkFlag()
|
|
.longName("print-build-logs")
|
|
.shortName('L')
|
|
.description("print full build logs on stderr")
|
|
.set(&printBuildLogs, true);
|
|
|
|
mkFlag()
|
|
.longName("version")
|
|
.description("show version information")
|
|
.handler([&]() { printVersion(programName); });
|
|
|
|
mkFlag()
|
|
.longName("no-net")
|
|
.description("disable substituters and consider all previously downloaded files up-to-date")
|
|
.handler([&]() { useNet = false; });
|
|
|
|
mkFlag()
|
|
.longName("refresh")
|
|
.description("consider all previously downloaded files out-of-date")
|
|
.handler([&]() { settings.tarballTtl = 0; });
|
|
}
|
|
|
|
void printFlags(std::ostream & out) override
|
|
{
|
|
Args::printFlags(out);
|
|
std::cout <<
|
|
"\n"
|
|
"In addition, most configuration settings can be overriden using '--<name> <value>'.\n"
|
|
"Boolean settings can be overriden using '--<name>' or '--no-<name>'. See 'nix\n"
|
|
"--help-config' for a list of configuration settings.\n";
|
|
}
|
|
|
|
void printHelp(const string & programName, std::ostream & out) override
|
|
{
|
|
MultiCommand::printHelp(programName, out);
|
|
|
|
#if 0
|
|
out << "\nFor full documentation, run 'man " << programName << "' or 'man " << programName << "-<COMMAND>'.\n";
|
|
#endif
|
|
|
|
std::cout << "\nNote: this program is EXPERIMENTAL and subject to change.\n";
|
|
}
|
|
|
|
void showHelpAndExit()
|
|
{
|
|
printHelp(programName, std::cout);
|
|
throw Exit();
|
|
}
|
|
};
|
|
|
|
void mainWrapped(int argc, char * * argv)
|
|
{
|
|
/* The chroot helper needs to be run before any threads have been
|
|
started. */
|
|
if (argc > 0 && argv[0] == chrootHelperName) {
|
|
chrootHelper(argc, argv);
|
|
return;
|
|
}
|
|
|
|
initNix();
|
|
initGC();
|
|
|
|
programPath = argv[0];
|
|
string programName = baseNameOf(programPath);
|
|
|
|
{
|
|
auto legacy = (*RegisterLegacyCommand::commands)[programName];
|
|
if (legacy) return legacy(argc, argv);
|
|
}
|
|
|
|
verbosity = lvlWarn;
|
|
settings.verboseBuild = false;
|
|
evalSettings.pureEval = true;
|
|
|
|
NixArgs args;
|
|
|
|
args.parseCmdline(argvToStrings(argc, argv));
|
|
|
|
settings.requireExperimentalFeature("nix-command");
|
|
|
|
initPlugins();
|
|
|
|
if (!args.command) args.showHelpAndExit();
|
|
|
|
Finally f([]() { stopProgressBar(); });
|
|
|
|
startProgressBar(args.printBuildLogs);
|
|
|
|
if (args.useNet && !haveInternet()) {
|
|
warn("you don't have Internet access; disabling some network-dependent features");
|
|
args.useNet = false;
|
|
}
|
|
|
|
if (!args.useNet) {
|
|
// FIXME: should check for command line overrides only.
|
|
if (!settings.useSubstitutes.overriden)
|
|
settings.useSubstitutes = false;
|
|
if (!settings.tarballTtl.overriden)
|
|
settings.tarballTtl = std::numeric_limits<unsigned int>::max();
|
|
if (!downloadSettings.tries.overriden)
|
|
downloadSettings.tries = 0;
|
|
if (!downloadSettings.connectTimeout.overriden)
|
|
downloadSettings.connectTimeout = 1;
|
|
}
|
|
|
|
args.command->prepare();
|
|
args.command->run();
|
|
}
|
|
|
|
}
|
|
|
|
int main(int argc, char * * argv)
|
|
{
|
|
return nix::handleExceptions(argv[0], [&]() {
|
|
nix::mainWrapped(argc, argv);
|
|
});
|
|
}
|