##################################################################### */
/*}}}*/
// Include Files /*{{{*/
+#include <config.h>
+
#include <apt-pkg/debsystem.h>
#include <apt-pkg/debversion.h>
#include <apt-pkg/debindexfile.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
-#include <apti18n.h>
-#include <sys/types.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
+
+#include <algorithm>
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <string>
+#include <vector>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <fcntl.h>
+
+#include <apti18n.h>
/*}}}*/
+using std::string;
+
debSystem debSys;
+class APT_HIDDEN debSystemPrivate {
+public:
+ debSystemPrivate() : LockFD(-1), LockCount(0), StatusFile(0)
+ {
+ }
+ // For locking support
+ int LockFD;
+ unsigned LockCount;
+
+ debStatusIndex *StatusFile;
+};
+
// System::debSystem - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
-debSystem::debSystem()
+debSystem::debSystem() : pkgSystem("Debian dpkg interface", &debVS), d(new debSystemPrivate())
{
- LockFD = -1;
- LockCount = 0;
- StatusFile = 0;
-
- Label = "Debian dpkg interface";
- VS = &debVS;
}
/*}}}*/
// System::~debSystem - Destructor /*{{{*/
/* */
debSystem::~debSystem()
{
- delete StatusFile;
+ delete d->StatusFile;
+ delete d;
}
/*}}}*/
// System::Lock - Get the lock /*{{{*/
bool debSystem::Lock()
{
// Disable file locking
- if (_config->FindB("Debug::NoLocking",false) == true || LockCount > 1)
+ if (_config->FindB("Debug::NoLocking",false) == true || d->LockCount > 1)
{
- LockCount++;
+ d->LockCount++;
return true;
}
// Create the lockfile
- string AdminDir = flNotFile(_config->Find("Dir::State::status"));
- LockFD = GetLock(AdminDir + "lock");
- if (LockFD == -1)
+ string AdminDir = flNotFile(_config->FindFile("Dir::State::status"));
+ d->LockFD = GetLock(AdminDir + "lock");
+ if (d->LockFD == -1)
{
if (errno == EACCES || errno == EAGAIN)
return _error->Error(_("Unable to lock the administration directory (%s), "
// See if we need to abort with a dirty journal
if (CheckUpdates() == true)
{
- close(LockFD);
- LockFD = -1;
+ close(d->LockFD);
+ d->LockFD = -1;
const char *cmd;
if (getenv("SUDO_USER") != NULL)
cmd = "sudo dpkg --configure -a";
"run '%s' to correct the problem. "), cmd);
}
- LockCount++;
+ d->LockCount++;
return true;
}
/* */
bool debSystem::UnLock(bool NoErrors)
{
- if (LockCount == 0 && NoErrors == true)
+ if (d->LockCount == 0 && NoErrors == true)
return false;
- if (LockCount < 1)
+ if (d->LockCount < 1)
return _error->Error(_("Not locked"));
- if (--LockCount == 0)
+ if (--d->LockCount == 0)
{
- close(LockFD);
- LockCount = 0;
+ close(d->LockFD);
+ d->LockCount = 0;
}
return true;
bool debSystem::CheckUpdates()
{
// Check for updates.. (dirty)
- string File = flNotFile(_config->Find("Dir::State::status")) + "updates/";
+ string File = flNotFile(_config->FindFile("Dir::State::status")) + "updates/";
DIR *DirP = opendir(File.c_str());
if (DirP == 0)
return false;
// System::Initialize - Setup the configuration space.. /*{{{*/
// ---------------------------------------------------------------------
/* These are the Debian specific configuration variables.. */
+static std::string getDpkgStatusLocation(Configuration const &Cnf) {
+ Configuration PathCnf;
+ PathCnf.Set("Dir", Cnf.Find("Dir", "/"));
+ PathCnf.Set("Dir::State::status", "status");
+ auto const cnfstatedir = Cnf.Find("Dir::State", STATE_DIR + 1);
+ // if the state dir ends in apt, replace it with dpkg -
+ // for the default this gives us the same as the fallback below.
+ // This can't be a ../dpkg as that would play bad with symlinks
+ std::string statedir;
+ if (APT::String::Endswith(cnfstatedir, "/apt/"))
+ statedir.assign(cnfstatedir, 0, cnfstatedir.length() - 5);
+ else if (APT::String::Endswith(cnfstatedir, "/apt"))
+ statedir.assign(cnfstatedir, 0, cnfstatedir.length() - 4);
+ if (statedir.empty())
+ PathCnf.Set("Dir::State", "var/lib/dpkg");
+ else
+ PathCnf.Set("Dir::State", flCombine(statedir, "dpkg"));
+ return PathCnf.FindFile("Dir::State::status");
+}
bool debSystem::Initialize(Configuration &Cnf)
{
/* These really should be jammed into a generic 'Local Database' engine
which is yet to be determined. The functions in pkgcachegen should
be the only users of these */
- Cnf.CndSet("Dir::State::extended_states", Cnf.FindDir("Dir::State").append("extended_states"));
- Cnf.CndSet("Dir::State::status", Cnf.FindDir("Dir", "/").append("var/lib/dpkg/status"));
- Cnf.CndSet("Dir::Bin::dpkg","/usr/bin/dpkg");
+ Cnf.CndSet("Dir::State::extended_states", "extended_states");
+ if (Cnf.Exists("Dir::State::status") == false)
+ Cnf.Set("Dir::State::status", getDpkgStatusLocation(Cnf));
+ Cnf.CndSet("Dir::Bin::dpkg",BIN_DIR"/dpkg");
- if (StatusFile) {
- delete StatusFile;
- StatusFile = 0;
+ if (d->StatusFile) {
+ delete d->StatusFile;
+ d->StatusFile = 0;
}
return true;
/*}}}*/
// System::ArchiveSupported - Is a file format supported /*{{{*/
// ---------------------------------------------------------------------
-/* The standard name for a deb is 'deb'.. There are no seperate versions
+/* The standard name for a deb is 'deb'.. There are no separate versions
of .deb to worry about.. */
-bool debSystem::ArchiveSupported(const char *Type)
+APT_PURE bool debSystem::ArchiveSupported(const char *Type)
{
if (strcmp(Type,"deb") == 0)
return true;
signed debSystem::Score(Configuration const &Cnf)
{
signed Score = 0;
- if (FileExists(Cnf.FindFile("Dir::State::status","/var/lib/dpkg/status")) == true)
+ if (FileExists(Cnf.FindFile("Dir::State::status",getDpkgStatusLocation(Cnf).c_str())) == true)
Score += 10;
- if (FileExists(Cnf.FindFile("Dir::Bin::dpkg","/usr/bin/dpkg")) == true)
+ if (FileExists(Cnf.Find("Dir::Bin::dpkg",BIN_DIR"/dpkg")) == true)
Score += 10;
if (FileExists("/etc/debian_version") == true)
Score += 10;
// System::AddStatusFiles - Register the status files /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool debSystem::AddStatusFiles(vector<pkgIndexFile *> &List)
+bool debSystem::AddStatusFiles(
std::vector<pkgIndexFile *> &List)
{
- if (StatusFile == 0)
- StatusFile = new debStatusIndex(_config->FindFile("Dir::State::status"));
- List.push_back(StatusFile);
+ if (d->StatusFile == 0)
+ d->StatusFile = new debStatusIndex(_config->FindFile("Dir::State::status"));
+ List.push_back(d->StatusFile);
return true;
}
/*}}}*/
bool debSystem::FindIndex(pkgCache::PkgFileIterator File,
pkgIndexFile *&Found) const
{
- if (StatusFile == 0)
+ if (d->StatusFile == 0)
return false;
- if (StatusFile->FindInCache(*File.Cache()) == File)
+ if (d->StatusFile->FindInCache(*File.Cache()) == File)
{
- Found = StatusFile;
+ Found = d->StatusFile;
return true;
}
return false;
}
/*}}}*/
+
+std::string debSystem::GetDpkgExecutable() /*{{{*/
+{
+ string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
+ string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
+ size_t dpkgChrootLen = dpkgChrootDir.length();
+ if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
+ {
+ if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
+ --dpkgChrootLen;
+ Tmp = Tmp.substr(dpkgChrootLen);
+ }
+ return Tmp;
+}
+ /*}}}*/
+std::vector<std::string> debSystem::GetDpkgBaseCommand() /*{{{*/
+{
+ // Generate the base argument list for dpkg
+ std::vector<std::string> Args = { GetDpkgExecutable() };
+ // Stick in any custom dpkg options
+ Configuration::Item const *Opts = _config->Tree("DPkg::Options");
+ if (Opts != 0)
+ {
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+ Args.push_back(Opts->Value);
+ }
+ }
+ return Args;
+}
+ /*}}}*/
+void debSystem::DpkgChrootDirectory() /*{{{*/
+{
+ std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
+ if (chrootDir == "/")
+ return;
+ std::cerr << "Chrooting into " << chrootDir << std::endl;
+ if (chroot(chrootDir.c_str()) != 0)
+ _exit(100);
+ if (chdir("/") != 0)
+ _exit(100);
+}
+ /*}}}*/
+pid_t debSystem::ExecDpkg(std::vector<std::string> const &sArgs, int * const inputFd, int * const outputFd, bool const DiscardOutput)/*{{{*/
+{
+ std::vector<const char *> Args(sArgs.size(), NULL);
+ std::transform(sArgs.begin(), sArgs.end(), Args.begin(), [](std::string const &s) { return s.c_str(); });
+ Args.push_back(NULL);
+
+ int external[2] = {-1, -1};
+ if (inputFd != nullptr || outputFd != nullptr)
+ if (pipe(external) != 0)
+ {
+ _error->WarningE("dpkg", "Can't create IPC pipe for dpkg call");
+ return -1;
+ }
+
+ pid_t const dpkg = ExecFork();
+ if (dpkg == 0) {
+ int const nullfd = open("/dev/null", O_RDONLY);
+ if (inputFd == nullptr)
+ dup2(nullfd, STDIN_FILENO);
+ else
+ {
+ close(external[1]);
+ dup2(external[0], STDIN_FILENO);
+ }
+ if (outputFd == nullptr)
+ dup2(nullfd, STDOUT_FILENO);
+ else
+ {
+ close(external[0]);
+ dup2(external[1], STDOUT_FILENO);
+ }
+ if (DiscardOutput == true)
+ dup2(nullfd, STDERR_FILENO);
+ debSystem::DpkgChrootDirectory();
+ execvp(Args[0], (char**) &Args[0]);
+ _error->WarningE("dpkg", "Can't execute dpkg!");
+ _exit(100);
+ }
+ if (outputFd != nullptr)
+ {
+ close(external[1]);
+ *outputFd = external[0];
+ }
+ else if (inputFd != nullptr)
+ {
+ close(external[0]);
+ *inputFd = external[1];
+ }
+ return dpkg;
+}
+ /*}}}*/
+bool debSystem::SupportsMultiArch() /*{{{*/
+{
+ std::vector<std::string> Args = GetDpkgBaseCommand();
+ Args.push_back("--assert-multi-arch");
+ pid_t const dpkgAssertMultiArch = ExecDpkg(Args, nullptr, nullptr, true);
+ if (dpkgAssertMultiArch > 0)
+ {
+ int Status = 0;
+ while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
+ {
+ if (errno == EINTR)
+ continue;
+ _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
+ break;
+ }
+ if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
+ return true;
+ }
+ return false;
+}
+ /*}}}*/
+std::vector<std::string> debSystem::SupportedArchitectures() /*{{{*/
+{
+ std::vector<std::string> archs;
+ {
+ string const arch = _config->Find("APT::Architecture");
+ if (arch.empty() == false)
+ archs.push_back(std::move(arch));
+ }
+
+ std::vector<std::string> sArgs = GetDpkgBaseCommand();
+ sArgs.push_back("--print-foreign-architectures");
+ int outputFd = -1;
+ pid_t const dpkgMultiArch = ExecDpkg(sArgs, nullptr, &outputFd, true);
+ if (dpkgMultiArch == -1)
+ return archs;
+
+ FILE *dpkg = fdopen(outputFd, "r");
+ if(dpkg != NULL) {
+ char* buf = NULL;
+ size_t bufsize = 0;
+ while (getline(&buf, &bufsize, dpkg) != -1)
+ {
+ char* tok_saveptr;
+ char* arch = strtok_r(buf, " ", &tok_saveptr);
+ while (arch != NULL) {
+ for (; isspace_ascii(*arch) != 0; ++arch);
+ if (arch[0] != '\0') {
+ char const* archend = arch;
+ for (; isspace_ascii(*archend) == 0 && *archend != '\0'; ++archend);
+ string a(arch, (archend - arch));
+ if (std::find(archs.begin(), archs.end(), a) == archs.end())
+ archs.push_back(a);
+ }
+ arch = strtok_r(NULL, " ", &tok_saveptr);
+ }
+ }
+ free(buf);
+ fclose(dpkg);
+ }
+ ExecWait(dpkgMultiArch, "dpkg --print-foreign-architectures", true);
+ return archs;
+}
+ /*}}}*/
projects / apt.git / blobdiff