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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* #####################################################################
cover around the internal solver to be able to run it like an external
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <config.h>
#include <apt-pkg/error.h>
#include <apt-pkg/cmndline.h>
#include <apt-pkg/init.h>
#include <apt-pkg/cachefile.h>
#include <apt-pkg/cacheset.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/edsp.h>
#include <apt-pkg/algorithms.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/pkgsystem.h>
#include <apt-pkg/upgrade.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/depcache.h>
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/cacheiterators.h>
#include <apt-private/private-output.h>
#include <string.h>
#include <iostream>
#include <sstream>
#include <list>
#include <string>
#include <unistd.h>
#include <cstdio>
#include <stdlib.h>
#include <apti18n.h>
/*}}}*/
// ShowHelp - Show a help screen /*{{{*/
// ---------------------------------------------------------------------
/* */
static bool ShowHelp(CommandLine &) {
ioprintf(std::cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
COMMON_ARCH,__DATE__,__TIME__);
std::cout <<
_("Usage: apt-internal-solver\n"
"\n"
"apt-internal-solver is an interface to use the current internal\n"
"like an external resolver for the APT family for debugging or alike\n"
"\n"
"Options:\n"
" -h This help text.\n"
" -q Loggable output - no progress indicator\n"
" -c=? Read this configuration file\n"
" -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n");
return true;
}
/*}}}*/
APT_NORETURN static void DIE(std::string const &message) { /*{{{*/
std::cerr << "ERROR: " << message << std::endl;
_error->DumpErrors(std::cerr);
exit(EXIT_FAILURE);
}
/*}}}*/
int main(int argc,const char *argv[]) /*{{{*/
{
CommandLine::Args Args[] = {
{'h',"help","help",0},
{'v',"version","version",0},
{'q',"quiet","quiet",CommandLine::IntLevel},
{'q',"silent","quiet",CommandLine::IntLevel},
{'c',"config-file",0,CommandLine::ConfigFile},
{'o',"option",0,CommandLine::ArbItem},
{0,0,0,0}};
// we really don't need anything
DropPrivileges();
CommandLine CmdL(Args,_config);
if (pkgInitConfig(*_config) == false ||
CmdL.Parse(argc,argv) == false) {
_error->DumpErrors();
return 2;
}
// See if the help should be shown
if (_config->FindB("help") == true ||
_config->FindB("version") == true) {
ShowHelp(CmdL);
return 1;
}
if (CmdL.FileList[0] != 0 && strcmp(CmdL.FileList[0], "scenario") == 0)
{
if (pkgInitSystem(*_config,_system) == false) {
std::cerr << "System could not be initialized!" << std::endl;
return 1;
}
pkgCacheFile CacheFile;
CacheFile.Open(NULL, false);
APT::PackageSet pkgset = APT::PackageSet::FromCommandLine(CacheFile, CmdL.FileList + 1);
FILE* output = stdout;
if (pkgset.empty() == true)
EDSP::WriteScenario(CacheFile, output);
else
EDSP::WriteLimitedScenario(CacheFile, output, pkgset);
fclose(output);
_error->DumpErrors(std::cerr);
return 0;
}
// Deal with stdout not being a tty
if (!isatty(STDOUT_FILENO) && _config->FindI("quiet", -1) == -1)
_config->Set("quiet","1");
if (_config->FindI("quiet", 0) < 1)
_config->Set("Debug::EDSP::WriteSolution", true);
_config->Set("APT::Solver", "internal");
_config->Set("edsp::scenario", "stdin");
int input = STDIN_FILENO;
FILE* output = stdout;
SetNonBlock(input, false);
EDSP::WriteProgress(0, "Start up solver…", output);
if (pkgInitSystem(*_config,_system) == false)
DIE("System could not be initialized!");
EDSP::WriteProgress(1, "Read request…", output);
if (WaitFd(input, false, 5) == false)
DIE("WAIT timed out in the resolver");
std::list<std::string> install, remove;
bool upgrade, distUpgrade, autoRemove;
if (EDSP::ReadRequest(input, install, remove, upgrade, distUpgrade, autoRemove) == false)
DIE("Parsing the request failed!");
EDSP::WriteProgress(5, "Read scenario…", output);
pkgCacheFile CacheFile;
if (CacheFile.Open(NULL, false) == false)
DIE("Failed to open CacheFile!");
EDSP::WriteProgress(50, "Apply request on scenario…", output);
if (EDSP::ApplyRequest(install, remove, CacheFile) == false)
DIE("Failed to apply request to depcache!");
pkgProblemResolver Fix(CacheFile);
for (std::list<std::string>::const_iterator i = remove.begin();
i != remove.end(); ++i) {
pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
Fix.Clear(P);
Fix.Protect(P);
Fix.Remove(P);
}
for (std::list<std::string>::const_iterator i = install.begin();
i != install.end(); ++i) {
pkgCache::PkgIterator P = CacheFile->FindPkg(*i);
Fix.Clear(P);
Fix.Protect(P);
}
for (std::list<std::string>::const_iterator i = install.begin();
i != install.end(); ++i)
CacheFile->MarkInstall(CacheFile->FindPkg(*i), true);
EDSP::WriteProgress(60, "Call problemresolver on current scenario…", output);
std::string failure;
if (upgrade == true) {
if (APT::Upgrade::Upgrade(CacheFile, APT::Upgrade::FORBID_REMOVE_PACKAGES | APT::Upgrade::FORBID_INSTALL_NEW_PACKAGES) == false)
failure = "ERR_UNSOLVABLE_UPGRADE";
} else if (distUpgrade == true) {
if (APT::Upgrade::Upgrade(CacheFile, APT::Upgrade::ALLOW_EVERYTHING) == false)
failure = "ERR_UNSOLVABLE_DIST_UPGRADE";
} else if (Fix.Resolve() == false)
failure = "ERR_UNSOLVABLE";
if (failure.empty() == false) {
std::ostringstream broken;
ShowBroken(broken, CacheFile, false);
EDSP::WriteError(failure.c_str(), broken.str(), output);
return 0;
}
EDSP::WriteProgress(95, "Write solution…", output);
if (EDSP::WriteSolution(CacheFile, output) == false)
DIE("Failed to output the solution!");
EDSP::WriteProgress(100, "Done", output);
bool const Errors = _error->PendingError();
if (_config->FindI("quiet",0) > 0)
_error->DumpErrors(std::cerr);
else
_error->DumpErrors(std::cerr, GlobalError::DEBUG);
return Errors == true ? 100 : 0;
}
/*}}}*/
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