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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: dpkgpm.cc,v 1.28 2004/01/27 02:25:01 mdz Exp $
/* ######################################################################
DPKG Package Manager - Provide an interface to dpkg
##################################################################### */
/*}}}*/
// Includes /*{{{*/
#include <config.h>
#include <apt-pkg/cachefile.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/depcache.h>
#include <apt-pkg/dpkgpm.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/install-progress.h>
#include <apt-pkg/packagemanager.h>
#include <apt-pkg/pkgrecords.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/cacheiterators.h>
#include <apt-pkg/macros.h>
#include <apt-pkg/pkgcache.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <pty.h>
#include <pwd.h>
#include <signal.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <algorithm>
#include <cstring>
#include <iostream>
#include <map>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include <apti18n.h>
/*}}}*/
using namespace std;
class pkgDPkgPMPrivate
{
public:
pkgDPkgPMPrivate() : stdin_is_dev_null(false), dpkgbuf_pos(0),
term_out(NULL), history_out(NULL),
progress(NULL), master(-1), slave(NULL)
{
dpkgbuf[0] = '\0';
}
~pkgDPkgPMPrivate()
{
}
bool stdin_is_dev_null;
// the buffer we use for the dpkg status-fd reading
char dpkgbuf[1024];
int dpkgbuf_pos;
FILE *term_out;
FILE *history_out;
string dpkg_error;
APT::Progress::PackageManager *progress;
// pty stuff
struct termios tt;
int master;
char * slave;
// signals
sigset_t sigmask;
sigset_t original_sigmask;
};
namespace
{
// Maps the dpkg "processing" info to human readable names. Entry 0
// of each array is the key, entry 1 is the value.
const std::pair<const char *, const char *> PackageProcessingOps[] = {
std::make_pair("install", N_("Installing %s")),
std::make_pair("configure", N_("Configuring %s")),
std::make_pair("remove", N_("Removing %s")),
std::make_pair("purge", N_("Completely removing %s")),
std::make_pair("disappear", N_("Noting disappearance of %s")),
std::make_pair("trigproc", N_("Running post-installation trigger %s"))
};
const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps;
const std::pair<const char *, const char *> * const PackageProcessingOpsEnd = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]);
// Predicate to test whether an entry in the PackageProcessingOps
// array matches a string.
class MatchProcessingOp
{
const char *target;
public:
MatchProcessingOp(const char *the_target)
: target(the_target)
{
}
bool operator()(const std::pair<const char *, const char *> &pair) const
{
return strcmp(pair.first, target) == 0;
}
};
}
/* helper function to ionice the given PID
there is no C header for ionice yet - just the syscall interface
so we use the binary from util-linux
*/
static bool
ionice(int PID)
{
if (!FileExists("/usr/bin/ionice"))
return false;
pid_t Process = ExecFork();
if (Process == 0)
{
char buf[32];
snprintf(buf, sizeof(buf), "-p%d", PID);
const char *Args[4];
Args[0] = "/usr/bin/ionice";
Args[1] = "-c3";
Args[2] = buf;
Args[3] = 0;
execv(Args[0], (char **)Args);
}
return ExecWait(Process, "ionice");
}
static std::string 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;
}
// dpkgChrootDirectory - chrooting for dpkg if needed /*{{{*/
static void 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);
}
/*}}}*/
// FindNowVersion - Helper to find a Version in "now" state /*{{{*/
// ---------------------------------------------------------------------
/* This is helpful when a package is no longer installed but has residual
* config files
*/
static
pkgCache::VerIterator FindNowVersion(const pkgCache::PkgIterator &Pkg)
{
pkgCache::VerIterator Ver;
for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
{
pkgCache::VerFileIterator Vf = Ver.FileList();
pkgCache::PkgFileIterator F = Vf.File();
for (F = Vf.File(); F.end() == false; ++F)
{
if (F && F.Archive())
{
if (strcmp(F.Archive(), "now"))
return Ver;
}
}
}
return Ver;
}
/*}}}*/
// DPkgPM::pkgDPkgPM - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
: pkgPackageManager(Cache), pkgFailures(0), PackagesDone(0), PackagesTotal(0)
{
d = new pkgDPkgPMPrivate();
}
/*}}}*/
// DPkgPM::pkgDPkgPM - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgDPkgPM::~pkgDPkgPM()
{
delete d;
}
/*}}}*/
// DPkgPM::Install - Install a package /*{{{*/
// ---------------------------------------------------------------------
/* Add an install operation to the sequence list */
bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
{
if (File.empty() == true || Pkg.end() == true)
return _error->Error("Internal Error, No file name for %s",Pkg.FullName().c_str());
// If the filename string begins with DPkg::Chroot-Directory, return the
// substr that is within the chroot so dpkg can access it.
string const chrootdir = _config->FindDir("DPkg::Chroot-Directory","/");
if (chrootdir != "/" && File.find(chrootdir) == 0)
{
size_t len = chrootdir.length();
if (chrootdir.at(len - 1) == '/')
len--;
List.push_back(Item(Item::Install,Pkg,File.substr(len)));
}
else
List.push_back(Item(Item::Install,Pkg,File));
return true;
}
/*}}}*/
// DPkgPM::Configure - Configure a package /*{{{*/
// ---------------------------------------------------------------------
/* Add a configure operation to the sequence list */
bool pkgDPkgPM::Configure(PkgIterator Pkg)
{
if (Pkg.end() == true)
return false;
List.push_back(Item(Item::Configure, Pkg));
// Use triggers for config calls if we configure "smart"
// as otherwise Pre-Depends will not be satisfied, see #526774
if (_config->FindB("DPkg::TriggersPending", false) == true)
List.push_back(Item(Item::TriggersPending, PkgIterator()));
return true;
}
/*}}}*/
// DPkgPM::Remove - Remove a package /*{{{*/
// ---------------------------------------------------------------------
/* Add a remove operation to the sequence list */
bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
{
if (Pkg.end() == true)
return false;
if (Purge == true)
List.push_back(Item(Item::Purge,Pkg));
else
List.push_back(Item(Item::Remove,Pkg));
return true;
}
/*}}}*/
// DPkgPM::SendPkgInfo - Send info for install-pkgs hook /*{{{*/
// ---------------------------------------------------------------------
/* This is part of the helper script communication interface, it sends
very complete information down to the other end of the pipe.*/
bool pkgDPkgPM::SendV2Pkgs(FILE *F)
{
return SendPkgsInfo(F, 2);
}
bool pkgDPkgPM::SendPkgsInfo(FILE * const F, unsigned int const &Version)
{
// This version of APT supports only v3, so don't sent higher versions
if (Version <= 3)
fprintf(F,"VERSION %u\n", Version);
else
fprintf(F,"VERSION 3\n");
/* Write out all of the configuration directives by walking the
configuration tree */
const Configuration::Item *Top = _config->Tree(0);
for (; Top != 0;)
{
if (Top->Value.empty() == false)
{
fprintf(F,"%s=%s\n",
QuoteString(Top->FullTag(),"=\"\n").c_str(),
QuoteString(Top->Value,"\n").c_str());
}
if (Top->Child != 0)
{
Top = Top->Child;
continue;
}
while (Top != 0 && Top->Next == 0)
Top = Top->Parent;
if (Top != 0)
Top = Top->Next;
}
fprintf(F,"\n");
// Write out the package actions in order.
for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
{
if(I->Pkg.end() == true)
continue;
pkgDepCache::StateCache &S = Cache[I->Pkg];
fprintf(F,"%s ",I->Pkg.Name());
// Current version which we are going to replace
pkgCache::VerIterator CurVer = I->Pkg.CurrentVer();
if (CurVer.end() == true && (I->Op == Item::Remove || I->Op == Item::Purge))
CurVer = FindNowVersion(I->Pkg);
if (CurVer.end() == true)
{
if (Version <= 2)
fprintf(F, "- ");
else
fprintf(F, "- - none ");
}
else
{
fprintf(F, "%s ", CurVer.VerStr());
if (Version >= 3)
fprintf(F, "%s %s ", CurVer.Arch(), CurVer.MultiArchType());
}
// Show the compare operator between current and install version
if (S.InstallVer != 0)
{
pkgCache::VerIterator const InstVer = S.InstVerIter(Cache);
int Comp = 2;
if (CurVer.end() == false)
Comp = InstVer.CompareVer(CurVer);
if (Comp < 0)
fprintf(F,"> ");
else if (Comp == 0)
fprintf(F,"= ");
else if (Comp > 0)
fprintf(F,"< ");
fprintf(F, "%s ", InstVer.VerStr());
if (Version >= 3)
fprintf(F, "%s %s ", InstVer.Arch(), InstVer.MultiArchType());
}
else
{
if (Version <= 2)
fprintf(F, "> - ");
else
fprintf(F, "> - - none ");
}
// Show the filename/operation
if (I->Op == Item::Install)
{
// No errors here..
if (I->File[0] != '/')
fprintf(F,"**ERROR**\n");
else
fprintf(F,"%s\n",I->File.c_str());
}
else if (I->Op == Item::Configure)
fprintf(F,"**CONFIGURE**\n");
else if (I->Op == Item::Remove ||
I->Op == Item::Purge)
fprintf(F,"**REMOVE**\n");
if (ferror(F) != 0)
return false;
}
return true;
}
/*}}}*/
// DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
// ---------------------------------------------------------------------
/* This looks for a list of scripts to run from the configuration file
each one is run and is fed on standard input a list of all .deb files
that are due to be installed. */
bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf)
{
bool result = true;
Configuration::Item const *Opts = _config->Tree(Cnf);
if (Opts == 0 || Opts->Child == 0)
return true;
Opts = Opts->Child;
sighandler_t old_sigpipe = signal(SIGPIPE, SIG_IGN);
unsigned int Count = 1;
for (; Opts != 0; Opts = Opts->Next, Count++)
{
if (Opts->Value.empty() == true)
continue;
if(_config->FindB("Debug::RunScripts", false) == true)
std::clog << "Running external script with list of all .deb file: '"
<< Opts->Value << "'" << std::endl;
// Determine the protocol version
string OptSec = Opts->Value;
string::size_type Pos;
if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
Pos = OptSec.length();
OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
unsigned int Version = _config->FindI(OptSec+"::Version",1);
unsigned int InfoFD = _config->FindI(OptSec + "::InfoFD", STDIN_FILENO);
// Create the pipes
std::set<int> KeepFDs;
MergeKeepFdsFromConfiguration(KeepFDs);
int Pipes[2];
if (pipe(Pipes) != 0) {
result = _error->Errno("pipe","Failed to create IPC pipe to subprocess");
break;
}
if (InfoFD != (unsigned)Pipes[0])
SetCloseExec(Pipes[0],true);
else
KeepFDs.insert(Pipes[0]);
SetCloseExec(Pipes[1],true);
// Purified Fork for running the script
pid_t Process = ExecFork(KeepFDs);
if (Process == 0)
{
// Setup the FDs
dup2(Pipes[0], InfoFD);
SetCloseExec(STDOUT_FILENO,false);
SetCloseExec(STDIN_FILENO,false);
SetCloseExec(STDERR_FILENO,false);
string hookfd;
strprintf(hookfd, "%d", InfoFD);
setenv("APT_HOOK_INFO_FD", hookfd.c_str(), 1);
dpkgChrootDirectory();
const char *Args[4];
Args[0] = "/bin/sh";
Args[1] = "-c";
Args[2] = Opts->Value.c_str();
Args[3] = 0;
execv(Args[0],(char **)Args);
_exit(100);
}
close(Pipes[0]);
FILE *F = fdopen(Pipes[1],"w");
if (F == 0) {
result = _error->Errno("fdopen","Faild to open new FD");
break;
}
// Feed it the filenames.
if (Version <= 1)
{
for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
{
// Only deal with packages to be installed from .deb
if (I->Op != Item::Install)
continue;
// No errors here..
if (I->File[0] != '/')
continue;
/* Feed the filename of each package that is pending install
into the pipe. */
fprintf(F,"%s\n",I->File.c_str());
if (ferror(F) != 0)
break;
}
}
else
SendPkgsInfo(F, Version);
fclose(F);
// Clean up the sub process
if (ExecWait(Process,Opts->Value.c_str()) == false) {
result = _error->Error("Failure running script %s",Opts->Value.c_str());
break;
}
}
signal(SIGPIPE, old_sigpipe);
return result;
}
/*}}}*/
// DPkgPM::DoStdin - Read stdin and pass to master pty /*{{{*/
// ---------------------------------------------------------------------
/*
*/
void pkgDPkgPM::DoStdin(int master)
{
unsigned char input_buf[256] = {0,};
ssize_t len = read(STDIN_FILENO, input_buf, sizeof(input_buf));
if (len)
FileFd::Write(master, input_buf, len);
else
d->stdin_is_dev_null = true;
}
/*}}}*/
// DPkgPM::DoTerminalPty - Read the terminal pty and write log /*{{{*/
// ---------------------------------------------------------------------
/*
* read the terminal pty and write log
*/
void pkgDPkgPM::DoTerminalPty(int master)
{
unsigned char term_buf[1024] = {0,0, };
ssize_t len=read(master, term_buf, sizeof(term_buf));
if(len == -1 && errno == EIO)
{
// this happens when the child is about to exit, we
// give it time to actually exit, otherwise we run
// into a race so we sleep for half a second.
struct timespec sleepfor = { 0, 500000000 };
nanosleep(&sleepfor, NULL);
return;
}
if(len <= 0)
return;
FileFd::Write(1, term_buf, len);
if(d->term_out)
fwrite(term_buf, len, sizeof(char), d->term_out);
}
/*}}}*/
// DPkgPM::ProcessDpkgStatusBuf /*{{{*/
// ---------------------------------------------------------------------
/*
*/
void pkgDPkgPM::ProcessDpkgStatusLine(char *line)
{
bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false);
if (Debug == true)
std::clog << "got from dpkg '" << line << "'" << std::endl;
/* dpkg sends strings like this:
'status: <pkg>: <pkg qstate>'
'status: <pkg>:<arch>: <pkg qstate>'
'processing: {install,upgrade,configure,remove,purge,disappear,trigproc}: pkg'
'processing: {install,upgrade,configure,remove,purge,disappear,trigproc}: trigger'
*/
// we need to split on ": " (note the appended space) as the ':' is
// part of the pkgname:arch information that dpkg sends
//
// A dpkg error message may contain additional ":" (like
// "failed in buffer_write(fd) (10, ret=-1): backend dpkg-deb ..."
// so we need to ensure to not split too much
std::vector<std::string> list = StringSplit(line, ": ", 4);
if(list.size() < 3)
{
if (Debug == true)
std::clog << "ignoring line: not enough ':'" << std::endl;
return;
}
// build the (prefix, pkgname, action) tuple, position of this
// is different for "processing" or "status" messages
std::string prefix = APT::String::Strip(list[0]);
std::string pkgname;
std::string action;
// "processing" has the form "processing: action: pkg or trigger"
// with action = ["install", "upgrade", "configure", "remove", "purge",
// "disappear", "trigproc"]
if (prefix == "processing")
{
pkgname = APT::String::Strip(list[2]);
action = APT::String::Strip(list[1]);
// we don't care for the difference (as dpkg doesn't really either)
if (action == "upgrade")
action = "install";
}
// "status" has the form: "status: pkg: state"
// with state in ["half-installed", "unpacked", "half-configured",
// "installed", "config-files", "not-installed"]
else if (prefix == "status")
{
pkgname = APT::String::Strip(list[1]);
action = APT::String::Strip(list[2]);
} else {
if (Debug == true)
std::clog << "unknown prefix '" << prefix << "'" << std::endl;
return;
}
/* handle the special cases first:
errors look like this:
'status: /var/cache/apt/archives/krecipes_0.8.1-0ubuntu1_i386.deb : error : trying to overwrite `/usr/share/doc/kde/HTML/en/krecipes/krectip.png', which is also in package krecipes-data
and conffile-prompt like this
'status:/etc/compiz.conf/compiz.conf : conffile-prompt: 'current-conffile' 'new-conffile' useredited distedited
*/
if (prefix == "status")
{
if(action == "error")
{
d->progress->Error(pkgname, PackagesDone, PackagesTotal,
list[3]);
pkgFailures++;
WriteApportReport(pkgname.c_str(), list[3].c_str());
return;
}
else if(action == "conffile-prompt")
{
d->progress->ConffilePrompt(pkgname, PackagesDone, PackagesTotal,
list[3]);
return;
}
}
// at this point we know that we should have a valid pkgname, so build all
// the info from it
// dpkg does not always send "pkgname:arch" so we add it here if needed
if (pkgname.find(":") == std::string::npos)
{
// find the package in the group that is touched by dpkg
// if there are multiple pkgs dpkg would send us a full pkgname:arch
pkgCache::GrpIterator Grp = Cache.FindGrp(pkgname);
if (Grp.end() == false)
{
pkgCache::PkgIterator P = Grp.PackageList();
for (; P.end() != true; P = Grp.NextPkg(P))
{
if(Cache[P].Keep() == false || Cache[P].ReInstall() == true)
{
pkgname = P.FullName();
break;
}
}
}
}
const char* const pkg = pkgname.c_str();
std::string short_pkgname = StringSplit(pkgname, ":")[0];
std::string arch = "";
if (pkgname.find(":") != string::npos)
arch = StringSplit(pkgname, ":")[1];
std::string i18n_pkgname = pkgname;
if (arch.size() != 0)
strprintf(i18n_pkgname, "%s (%s)", short_pkgname.c_str(), arch.c_str());
// 'processing' from dpkg looks like
// 'processing: action: pkg'
if(prefix == "processing")
{
const std::pair<const char *, const char *> * const iter =
std::find_if(PackageProcessingOpsBegin,
PackageProcessingOpsEnd,
MatchProcessingOp(action.c_str()));
if(iter == PackageProcessingOpsEnd)
{
if (Debug == true)
std::clog << "ignoring unknown action: " << action << std::endl;
return;
}
std::string msg;
strprintf(msg, _(iter->second), i18n_pkgname.c_str());
d->progress->StatusChanged(pkgname, PackagesDone, PackagesTotal, msg);
// FIXME: this needs a muliarch testcase
// FIXME2: is "pkgname" here reliable with dpkg only sending us
// short pkgnames?
if (action == "disappear")
handleDisappearAction(pkgname);
return;
}
if (prefix == "status")
{
vector<struct DpkgState> const &states = PackageOps[pkg];
if(PackageOpsDone[pkg] < states.size())
{
char const * const next_action = states[PackageOpsDone[pkg]].state;
if (next_action && Debug == true)
std::clog << "(parsed from dpkg) pkg: " << short_pkgname
<< " action: " << action << " (expected: '" << next_action << "' "
<< PackageOpsDone[pkg] << " of " << states.size() << ")" << endl;
// check if the package moved to the next dpkg state
if(next_action && (action == next_action))
{
// only read the translation if there is actually a next action
char const * const translation = _(states[PackageOpsDone[pkg]].str);
// we moved from one dpkg state to a new one, report that
++PackageOpsDone[pkg];
++PackagesDone;
std::string msg;
strprintf(msg, translation, i18n_pkgname.c_str());
d->progress->StatusChanged(pkgname, PackagesDone, PackagesTotal, msg);
}
}
}
}
/*}}}*/
// DPkgPM::handleDisappearAction /*{{{*/
void pkgDPkgPM::handleDisappearAction(string const &pkgname)
{
pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
if (unlikely(Pkg.end() == true))
return;
// record the package name for display and stuff later
disappearedPkgs.insert(Pkg.FullName(true));
// the disappeared package was auto-installed - nothing to do
if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
return;
pkgCache::VerIterator PkgVer = Cache[Pkg].InstVerIter(Cache);
if (unlikely(PkgVer.end() == true))
return;
/* search in the list of dependencies for (Pre)Depends,
check if this dependency has a Replaces on our package
and if so transfer the manual installed flag to it */
for (pkgCache::DepIterator Dep = PkgVer.DependsList(); Dep.end() != true; ++Dep)
{
if (Dep->Type != pkgCache::Dep::Depends &&
Dep->Type != pkgCache::Dep::PreDepends)
continue;
pkgCache::PkgIterator Tar = Dep.TargetPkg();
if (unlikely(Tar.end() == true))
continue;
// the package is already marked as manual
if ((Cache[Tar].Flags & pkgCache::Flag::Auto) != pkgCache::Flag::Auto)
continue;
pkgCache::VerIterator TarVer = Cache[Tar].InstVerIter(Cache);
if (TarVer.end() == true)
continue;
for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
{
if (Rep->Type != pkgCache::Dep::Replaces)
continue;
if (Pkg != Rep.TargetPkg())
continue;
// okay, they are strongly connected - transfer manual-bit
if (Debug == true)
std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
Cache[Tar].Flags &= ~Flag::Auto;
break;
}
}
}
/*}}}*/
// DPkgPM::DoDpkgStatusFd /*{{{*/
// ---------------------------------------------------------------------
/*
*/
void pkgDPkgPM::DoDpkgStatusFd(int statusfd)
{
char *p, *q;
int len;
len=read(statusfd, &d->dpkgbuf[d->dpkgbuf_pos], sizeof(d->dpkgbuf)-d->dpkgbuf_pos);
d->dpkgbuf_pos += len;
if(len <= 0)
return;
// process line by line if we have a buffer
p = q = d->dpkgbuf;
while((q=(char*)memchr(p, '\n', d->dpkgbuf+d->dpkgbuf_pos-p)) != NULL)
{
*q = 0;
ProcessDpkgStatusLine(p);
p=q+1; // continue with next line
}
// now move the unprocessed bits (after the final \n that is now a 0x0)
// to the start and update d->dpkgbuf_pos
p = (char*)memrchr(d->dpkgbuf, 0, d->dpkgbuf_pos);
if(p == NULL)
return;
// we are interessted in the first char *after* 0x0
p++;
// move the unprocessed tail to the start and update pos
memmove(d->dpkgbuf, p, p-d->dpkgbuf);
d->dpkgbuf_pos = d->dpkgbuf+d->dpkgbuf_pos-p;
}
/*}}}*/
// DPkgPM::WriteHistoryTag /*{{{*/
void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
{
size_t const length = value.length();
if (length == 0)
return;
// poor mans rstrip(", ")
if (value[length-2] == ',' && value[length-1] == ' ')
value.erase(length - 2, 2);
fprintf(d->history_out, "%s: %s\n", tag.c_str(), value.c_str());
} /*}}}*/
// DPkgPM::OpenLog /*{{{*/
bool pkgDPkgPM::OpenLog()
{
string const logdir = _config->FindDir("Dir::Log");
if(CreateAPTDirectoryIfNeeded(logdir, logdir) == false)
// FIXME: use a better string after freeze
return _error->Error(_("Directory '%s' missing"), logdir.c_str());
// get current time
char timestr[200];
time_t const t = time(NULL);
struct tm const * const tmp = localtime(&t);
strftime(timestr, sizeof(timestr), "%F %T", tmp);
// open terminal log
string const logfile_name = flCombine(logdir,
_config->Find("Dir::Log::Terminal"));
if (!logfile_name.empty())
{
d->term_out = fopen(logfile_name.c_str(),"a");
if (d->term_out == NULL)
return _error->WarningE("OpenLog", _("Could not open file '%s'"), logfile_name.c_str());
setvbuf(d->term_out, NULL, _IONBF, 0);
SetCloseExec(fileno(d->term_out), true);
if (getuid() == 0) // if we aren't root, we can't chown a file, so don't try it
{
struct passwd *pw = getpwnam("root");
struct group *gr = getgrnam("adm");
if (pw != NULL && gr != NULL && chown(logfile_name.c_str(), pw->pw_uid, gr->gr_gid) != 0)
_error->WarningE("OpenLog", "chown to root:adm of file %s failed", logfile_name.c_str());
}
if (chmod(logfile_name.c_str(), 0640) != 0)
_error->WarningE("OpenLog", "chmod 0640 of file %s failed", logfile_name.c_str());
fprintf(d->term_out, "\nLog started: %s\n", timestr);
}
// write your history
string const history_name = flCombine(logdir,
_config->Find("Dir::Log::History"));
if (!history_name.empty())
{
d->history_out = fopen(history_name.c_str(),"a");
if (d->history_out == NULL)
return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
SetCloseExec(fileno(d->history_out), true);
chmod(history_name.c_str(), 0644);
fprintf(d->history_out, "\nStart-Date: %s\n", timestr);
string remove, purge, install, reinstall, upgrade, downgrade;
for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
{
enum { CANDIDATE, CANDIDATE_AUTO, CURRENT_CANDIDATE, CURRENT } infostring;
string *line = NULL;
#define HISTORYINFO(X, Y) { line = &X; infostring = Y; }
if (Cache[I].NewInstall() == true)
HISTORYINFO(install, CANDIDATE_AUTO)
else if (Cache[I].ReInstall() == true)
HISTORYINFO(reinstall, CANDIDATE)
else if (Cache[I].Upgrade() == true)
HISTORYINFO(upgrade, CURRENT_CANDIDATE)
else if (Cache[I].Downgrade() == true)
HISTORYINFO(downgrade, CURRENT_CANDIDATE)
else if (Cache[I].Delete() == true)
HISTORYINFO((Cache[I].Purge() ? purge : remove), CURRENT)
else
continue;
#undef HISTORYINFO
line->append(I.FullName(false)).append(" (");
switch (infostring) {
case CANDIDATE: line->append(Cache[I].CandVersion); break;
case CANDIDATE_AUTO:
line->append(Cache[I].CandVersion);
if ((Cache[I].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
line->append(", automatic");
break;
case CURRENT_CANDIDATE: line->append(Cache[I].CurVersion).append(", ").append(Cache[I].CandVersion); break;
case CURRENT: line->append(Cache[I].CurVersion); break;
}
line->append("), ");
}
if (_config->Exists("Commandline::AsString") == true)
WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
WriteHistoryTag("Install", install);
WriteHistoryTag("Reinstall", reinstall);
WriteHistoryTag("Upgrade", upgrade);
WriteHistoryTag("Downgrade",downgrade);
WriteHistoryTag("Remove",remove);
WriteHistoryTag("Purge",purge);
fflush(d->history_out);
}
return true;
}
/*}}}*/
// DPkg::CloseLog /*{{{*/
bool pkgDPkgPM::CloseLog()
{
char timestr[200];
time_t t = time(NULL);
struct tm *tmp = localtime(&t);
strftime(timestr, sizeof(timestr), "%F %T", tmp);
if(d->term_out)
{
fprintf(d->term_out, "Log ended: ");
fprintf(d->term_out, "%s", timestr);
fprintf(d->term_out, "\n");
fclose(d->term_out);
}
d->term_out = NULL;
if(d->history_out)
{
if (disappearedPkgs.empty() == false)
{
string disappear;
for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
d != disappearedPkgs.end(); ++d)
{
pkgCache::PkgIterator P = Cache.FindPkg(*d);
disappear.append(*d);
if (P.end() == true)
disappear.append(", ");
else
disappear.append(" (").append(Cache[P].CurVersion).append("), ");
}
WriteHistoryTag("Disappeared", disappear);
}
if (d->dpkg_error.empty() == false)
fprintf(d->history_out, "Error: %s\n", d->dpkg_error.c_str());
fprintf(d->history_out, "End-Date: %s\n", timestr);
fclose(d->history_out);
}
d->history_out = NULL;
return true;
}
/*}}}*/
/*}}}*/
/*{{{*/
// This implements a racy version of pselect for those architectures
// that don't have a working implementation.
// FIXME: Probably can be removed on Lenny+1
static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds, const struct timespec *timeout,
const sigset_t *sigmask)
{
sigset_t origmask;
struct timeval tv;
int retval;
tv.tv_sec = timeout->tv_sec;
tv.tv_usec = timeout->tv_nsec/1000;
sigprocmask(SIG_SETMASK, sigmask, &origmask);
retval = select(nfds, readfds, writefds, exceptfds, &tv);
sigprocmask(SIG_SETMASK, &origmask, 0);
return retval;
}
/*}}}*/
// DPkgPM::BuildPackagesProgressMap /*{{{*/
void pkgDPkgPM::BuildPackagesProgressMap()
{
// map the dpkg states to the operations that are performed
// (this is sorted in the same way as Item::Ops)
static const struct DpkgState DpkgStatesOpMap[][7] = {
// Install operation
{
{"half-installed", N_("Preparing %s")},
{"unpacked", N_("Unpacking %s") },
{NULL, NULL}
},
// Configure operation
{
{"unpacked",N_("Preparing to configure %s") },
{"half-configured", N_("Configuring %s") },
{ "installed", N_("Installed %s")},
{NULL, NULL}
},
// Remove operation
{
{"half-configured", N_("Preparing for removal of %s")},
{"half-installed", N_("Removing %s")},
{"config-files", N_("Removed %s")},
{NULL, NULL}
},
// Purge operation
{
{"config-files", N_("Preparing to completely remove %s")},
{"not-installed", N_("Completely removed %s")},
{NULL, NULL}
},
};
// init the PackageOps map, go over the list of packages that
// that will be [installed|configured|removed|purged] and add
// them to the PackageOps map (the dpkg states it goes through)
// and the PackageOpsTranslations (human readable strings)
for (vector<Item>::const_iterator I = List.begin(); I != List.end(); ++I)
{
if((*I).Pkg.end() == true)
continue;
string const name = (*I).Pkg.FullName();
PackageOpsDone[name] = 0;
for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL; ++i)
{
PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
PackagesTotal++;
}
}
}
/*}}}*/
bool pkgDPkgPM::Go(int StatusFd)
{
APT::Progress::PackageManager *progress = NULL;
if (StatusFd == -1)
progress = APT::Progress::PackageManagerProgressFactory();
else
progress = new APT::Progress::PackageManagerProgressFd(StatusFd);
return Go(progress);
}
void pkgDPkgPM::StartPtyMagic()
{
if (_config->FindB("Dpkg::Use-Pty", true) == false)
{
d->master = -1;
if (d->slave != NULL)
free(d->slave);
d->slave = NULL;
return;
}
_error->PushToStack();
// if tcgetattr for both stdin/stdout returns 0 (no error)
// we do the pty magic
if (tcgetattr(STDOUT_FILENO, &d->tt) == 0 &&
tcgetattr(STDIN_FILENO, &d->tt) == 0)
{
d->master = posix_openpt(O_RDWR | O_NOCTTY);
if (d->master == -1)
_error->Errno("posix_openpt", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
else if (unlockpt(d->master) == -1)
{
_error->Errno("unlockpt", "Unlocking the slave of master fd %d failed!", d->master);
close(d->master);
d->master = -1;
}
else
{
char const * const slave_name = ptsname(d->master);
if (slave_name == NULL)
{
_error->Errno("unlockpt", "Getting name for slave of master fd %d failed!", d->master);
close(d->master);
d->master = -1;
}
else
{
d->slave = strdup(slave_name);
if (d->slave == NULL)
{
_error->Errno("strdup", "Copying name %s for slave of master fd %d failed!", slave_name, d->master);
close(d->master);
d->master = -1;
}
struct winsize win;
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) < 0)
_error->Errno("ioctl", "Getting TIOCGWINSZ from stdout failed!");
if (ioctl(d->master, TIOCSWINSZ, &win) < 0)
_error->Errno("ioctl", "Setting TIOCSWINSZ for master fd %d failed!", d->master);
if (tcsetattr(d->master, TCSANOW, &d->tt) == -1)
_error->Errno("tcsetattr", "Setting in Start via TCSANOW for master fd %d failed!", d->master);
struct termios raw_tt;
raw_tt = d->tt;
cfmakeraw(&raw_tt);
raw_tt.c_lflag &= ~ECHO;
raw_tt.c_lflag |= ISIG;
// block SIGTTOU during tcsetattr to prevent a hang if
// the process is a member of the background process group
// http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
sigemptyset(&d->sigmask);
sigaddset(&d->sigmask, SIGTTOU);
sigprocmask(SIG_BLOCK,&d->sigmask, &d->original_sigmask);
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw_tt) == -1)
_error->Errno("tcsetattr", "Setting in Start via TCSAFLUSH for stdout failed!");
sigprocmask(SIG_SETMASK, &d->original_sigmask, NULL);
}
}
}
else
{
// complain only if stdout is either a terminal (but still failed) or is an invalid
// descriptor otherwise we would complain about redirection to e.g. /dev/null as well.
if (isatty(STDOUT_FILENO) == 1 || errno == EBADF)
_error->Errno("tcgetattr", _("Can not write log (%s)"), _("Is stdout a terminal?"));
}
if (_error->PendingError() == true)
{
if (d->master != -1)
{
close(d->master);
d->master = -1;
}
_error->DumpErrors(std::cerr);
}
_error->RevertToStack();
}
void pkgDPkgPM::SetupSlavePtyMagic()
{
if(d->master == -1)
return;
if (close(d->master) == -1)
_error->FatalE("close", "Closing master %d in child failed!", d->master);
if (setsid() == -1)
_error->FatalE("setsid", "Starting a new session for child failed!");
int const slaveFd = open(d->slave, O_RDWR);
if (slaveFd == -1)
_error->FatalE("open", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
if (ioctl(slaveFd, TIOCSCTTY, 0) < 0)
_error->FatalE("ioctl", "Setting TIOCSCTTY for slave fd %d failed!", slaveFd);
else
{
for (unsigned short i = 0; i < 3; ++i)
if (dup2(slaveFd, i) == -1)
_error->FatalE("dup2", "Dupping %d to %d in child failed!", slaveFd, i);
if (tcsetattr(0, TCSANOW, &d->tt) < 0)
_error->FatalE("tcsetattr", "Setting in Setup via TCSANOW for slave fd %d failed!", slaveFd);
}
}
void pkgDPkgPM::StopPtyMagic()
{
if (d->slave != NULL)
free(d->slave);
d->slave = NULL;
if(d->master >= 0)
{
if (tcsetattr(0, TCSAFLUSH, &d->tt) == -1)
_error->FatalE("tcsetattr", "Setting in Stop via TCSAFLUSH for stdin failed!");
close(d->master);
d->master = -1;
}
}
// DPkgPM::Go - Run the sequence /*{{{*/
// ---------------------------------------------------------------------
/* This globs the operations and calls dpkg
*
* If it is called with a progress object apt will report the install
* progress to this object. It maps the dpkg states a package goes
* through to human readable (and i10n-able)
* names and calculates a percentage for each step.
*/
bool pkgDPkgPM::Go(APT::Progress::PackageManager *progress)
{
pkgPackageManager::SigINTStop = false;
d->progress = progress;
// Generate the base argument list for dpkg
unsigned long StartSize = 0;
std::vector<const char *> Args;
std::string DpkgExecutable = getDpkgExecutable();
Args.push_back(DpkgExecutable.c_str());
StartSize += DpkgExecutable.length();
// 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.c_str());
StartSize += Opts->Value.length();
}
}
size_t const BaseArgs = Args.size();
// we need to detect if we can qualify packages with the architecture or not
Args.push_back("--assert-multi-arch");
Args.push_back(NULL);
pid_t dpkgAssertMultiArch = ExecFork();
if (dpkgAssertMultiArch == 0)
{
dpkgChrootDirectory();
// redirect everything to the ultimate sink as we only need the exit-status
int const nullfd = open("/dev/null", O_RDONLY);
dup2(nullfd, STDIN_FILENO);
dup2(nullfd, STDOUT_FILENO);
dup2(nullfd, STDERR_FILENO);
execvp(Args[0], (char**) &Args[0]);
_error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
_exit(2);
}
fd_set rfds;
struct timespec tv;
unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
if (RunScripts("DPkg::Pre-Invoke") == false)
return false;
if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
return false;
// support subpressing of triggers processing for special
// cases like d-i that runs the triggers handling manually
bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
List.push_back(Item(Item::ConfigurePending, PkgIterator()));
// for the progress
BuildPackagesProgressMap();
d->stdin_is_dev_null = false;
// create log
OpenLog();
bool dpkgMultiArch = false;
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)
dpkgMultiArch = true;
}
// start pty magic before the loop
StartPtyMagic();
// Tell the progress that its starting and fork dpkg
d->progress->Start(d->master);
// this loop is runs once per dpkg operation
vector<Item>::const_iterator I = List.begin();
while (I != List.end())
{
// Do all actions with the same Op in one run
vector<Item>::const_iterator J = I;
if (TriggersPending == true)
for (; J != List.end(); ++J)
{
if (J->Op == I->Op)
continue;
if (J->Op != Item::TriggersPending)
break;
vector<Item>::const_iterator T = J + 1;
if (T != List.end() && T->Op == I->Op)
continue;
break;
}
else
for (; J != List.end() && J->Op == I->Op; ++J)
/* nothing */;
// keep track of allocated strings for multiarch package names
std::vector<char *> Packages;
// start with the baseset of arguments
unsigned long Size = StartSize;
Args.erase(Args.begin() + BaseArgs, Args.end());
// Now check if we are within the MaxArgs limit
//
// this code below is problematic, because it may happen that
// the argument list is split in a way that A depends on B
// and they are in the same "--configure A B" run
// - with the split they may now be configured in different
// runs, using Immediate-Configure-All can help prevent this.
if (J - I > (signed)MaxArgs)
{
J = I + MaxArgs;
unsigned long const size = MaxArgs + 10;
Args.reserve(size);
Packages.reserve(size);
}
else
{
unsigned long const size = (J - I) + 10;
Args.reserve(size);
Packages.reserve(size);
}
int fd[2];
if (pipe(fd) != 0)
return _error->Errno("pipe","Failed to create IPC pipe to dpkg");
#define ADDARG(X) Args.push_back(X); Size += strlen(X)
#define ADDARGC(X) Args.push_back(X); Size += sizeof(X) - 1
ADDARGC("--status-fd");
char status_fd_buf[20];
snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
ADDARG(status_fd_buf);
unsigned long const Op = I->Op;
switch (I->Op)
{
case Item::Remove:
ADDARGC("--force-depends");
ADDARGC("--force-remove-essential");
ADDARGC("--remove");
break;
case Item::Purge:
ADDARGC("--force-depends");
ADDARGC("--force-remove-essential");
ADDARGC("--purge");
break;
case Item::Configure:
ADDARGC("--configure");
break;
case Item::ConfigurePending:
ADDARGC("--configure");
ADDARGC("--pending");
break;
case Item::TriggersPending:
ADDARGC("--triggers-only");
ADDARGC("--pending");
break;
case Item::Install:
ADDARGC("--unpack");
ADDARGC("--auto-deconfigure");
break;
}
if (NoTriggers == true && I->Op != Item::TriggersPending &&
I->Op != Item::ConfigurePending)
{
ADDARGC("--no-triggers");
}
#undef ADDARGC
// Write in the file or package names
if (I->Op == Item::Install)
{
for (;I != J && Size < MaxArgBytes; ++I)
{
if (I->File[0] != '/')
return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
Args.push_back(I->File.c_str());
Size += I->File.length();
}
}
else
{
string const nativeArch = _config->Find("APT::Architecture");
unsigned long const oldSize = I->Op == Item::Configure ? Size : 0;
for (;I != J && Size < MaxArgBytes; ++I)
{
if((*I).Pkg.end() == true)
continue;
if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.FullName(true)) != disappearedPkgs.end())
continue;
// We keep this here to allow "smooth" transitions from e.g. multiarch dpkg/ubuntu to dpkg/debian
if (dpkgMultiArch == false && (I->Pkg.Arch() == nativeArch ||
strcmp(I->Pkg.Arch(), "all") == 0 ||
strcmp(I->Pkg.Arch(), "none") == 0))
{
char const * const name = I->Pkg.Name();
ADDARG(name);
}
else
{
pkgCache::VerIterator PkgVer;
std::string name = I->Pkg.Name();
if (Op == Item::Remove || Op == Item::Purge)
{
PkgVer = I->Pkg.CurrentVer();
if(PkgVer.end() == true)
PkgVer = FindNowVersion(I->Pkg);
}
else
PkgVer = Cache[I->Pkg].InstVerIter(Cache);
if (strcmp(I->Pkg.Arch(), "none") == 0)
; // never arch-qualify a package without an arch
else if (PkgVer.end() == false)
name.append(":").append(PkgVer.Arch());
else
_error->Warning("Can not find PkgVer for '%s'", name.c_str());
char * const fullname = strdup(name.c_str());
Packages.push_back(fullname);
ADDARG(fullname);
}
}
// skip configure action if all sheduled packages disappeared
if (oldSize == Size)
continue;
}
#undef ADDARG
J = I;
if (_config->FindB("Debug::pkgDPkgPM",false) == true)
{
for (std::vector<const char *>::const_iterator a = Args.begin();
a != Args.end(); ++a)
clog << *a << ' ';
clog << endl;
continue;
}
Args.push_back(NULL);
cout << flush;
clog << flush;
cerr << flush;
/* Mask off sig int/quit. We do this because dpkg also does when
it forks scripts. What happens is that when you hit ctrl-c it sends
it to all processes in the group. Since dpkg ignores the signal
it doesn't die but we do! So we must also ignore it */
sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
sighandler_t old_SIGINT = signal(SIGINT,SigINT);
// Check here for any SIGINT
if (pkgPackageManager::SigINTStop && (Op == Item::Remove || Op == Item::Purge || Op == Item::Install))
break;
// ignore SIGHUP as well (debian #463030)
sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
// now run dpkg
d->progress->StartDpkg();
std::set<int> KeepFDs;
KeepFDs.insert(fd[1]);
MergeKeepFdsFromConfiguration(KeepFDs);
pid_t Child = ExecFork(KeepFDs);
if (Child == 0)
{
// This is the child
SetupSlavePtyMagic();
close(fd[0]); // close the read end of the pipe
dpkgChrootDirectory();
if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
_exit(100);
if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
{
int Flags;
int dummy = 0;
if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
_exit(100);
// Discard everything in stdin before forking dpkg
if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
_exit(100);
while (read(STDIN_FILENO,&dummy,1) == 1);
if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
_exit(100);
}
/* No Job Control Stop Env is a magic dpkg var that prevents it
from using sigstop */
putenv((char *)"DPKG_NO_TSTP=yes");
execvp(Args[0], (char**) &Args[0]);
cerr << "Could not exec dpkg!" << endl;
_exit(100);
}
// apply ionice
if (_config->FindB("DPkg::UseIoNice", false) == true)
ionice(Child);
// Wait for dpkg
int Status = 0;
// we read from dpkg here
int const _dpkgin = fd[0];
close(fd[1]); // close the write end of the pipe
// setups fds
sigemptyset(&d->sigmask);
sigprocmask(SIG_BLOCK,&d->sigmask,&d->original_sigmask);
/* free vectors (and therefore memory) as we don't need the included data anymore */
for (std::vector<char *>::const_iterator p = Packages.begin();
p != Packages.end(); ++p)
free(*p);
Packages.clear();
// the result of the waitpid call
int res;
int select_ret;
while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
if(res < 0) {
// FIXME: move this to a function or something, looks ugly here
// error handling, waitpid returned -1
if (errno == EINTR)
continue;
RunScripts("DPkg::Post-Invoke");
// Restore sig int/quit
signal(SIGQUIT,old_SIGQUIT);
signal(SIGINT,old_SIGINT);
signal(SIGHUP,old_SIGHUP);
return _error->Errno("waitpid","Couldn't wait for subprocess");
}
// wait for input or output here
FD_ZERO(&rfds);
if (d->master >= 0 && !d->stdin_is_dev_null)
FD_SET(0, &rfds);
FD_SET(_dpkgin, &rfds);
if(d->master >= 0)
FD_SET(d->master, &rfds);
tv.tv_sec = 0;
tv.tv_nsec = d->progress->GetPulseInterval();
select_ret = pselect(max(d->master, _dpkgin)+1, &rfds, NULL, NULL,
&tv, &d->original_sigmask);
if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
select_ret = racy_pselect(max(d->master, _dpkgin)+1, &rfds, NULL,
NULL, &tv, &d->original_sigmask);
d->progress->Pulse();
if (select_ret == 0)
continue;
else if (select_ret < 0 && errno == EINTR)
continue;
else if (select_ret < 0)
{
perror("select() returned error");
continue;
}
if(d->master >= 0 && FD_ISSET(d->master, &rfds))
DoTerminalPty(d->master);
if(d->master >= 0 && FD_ISSET(0, &rfds))
DoStdin(d->master);
if(FD_ISSET(_dpkgin, &rfds))
DoDpkgStatusFd(_dpkgin);
}
close(_dpkgin);
// Restore sig int/quit
signal(SIGQUIT,old_SIGQUIT);
signal(SIGINT,old_SIGINT);
signal(SIGHUP,old_SIGHUP);
// Check for an error code.
if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
{
// if it was set to "keep-dpkg-runing" then we won't return
// here but keep the loop going and just report it as a error
// for later
bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
strprintf(d->dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
else if (WIFEXITED(Status) != 0)
strprintf(d->dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
else
strprintf(d->dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
_error->Error("%s", d->dpkg_error.c_str());
if(stopOnError)
break;
}
}
// dpkg is done at this point
d->progress->Stop();
StopPtyMagic();
CloseLog();
if (pkgPackageManager::SigINTStop)
_error->Warning(_("Operation was interrupted before it could finish"));
if (RunScripts("DPkg::Post-Invoke") == false)
return false;
if (_config->FindB("Debug::pkgDPkgPM",false) == false)
{
std::string const oldpkgcache = _config->FindFile("Dir::cache::pkgcache");
if (oldpkgcache.empty() == false && RealFileExists(oldpkgcache) == true &&
unlink(oldpkgcache.c_str()) == 0)
{
std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
if (srcpkgcache.empty() == false && RealFileExists(srcpkgcache) == true)
{
_error->PushToStack();
pkgCacheFile CacheFile;
CacheFile.BuildCaches(NULL, true);
_error->RevertToStack();
}
}
}
Cache.writeStateFile(NULL);
return d->dpkg_error.empty();
}
void SigINT(int /*sig*/) {
pkgPackageManager::SigINTStop = true;
}
/*}}}*/
// pkgDpkgPM::Reset - Dump the contents of the command list /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgDPkgPM::Reset()
{
List.erase(List.begin(),List.end());
}
/*}}}*/
// pkgDpkgPM::WriteApportReport - write out error report pkg failure /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
{
// If apport doesn't exist or isn't installed do nothing
// This e.g. prevents messages in 'universes' without apport
pkgCache::PkgIterator apportPkg = Cache.FindPkg("apport");
if (apportPkg.end() == true || apportPkg->CurrentVer == 0)
return;
string pkgname, reportfile, srcpkgname, pkgver, arch;
string::size_type pos;
FILE *report;
if (_config->FindB("Dpkg::ApportFailureReport", true) == false)
{
std::clog << "configured to not write apport reports" << std::endl;
return;
}
// only report the first errors
if(pkgFailures > _config->FindI("APT::Apport::MaxReports", 3))
{
std::clog << _("No apport report written because MaxReports is reached already") << std::endl;
return;
}
// check if its not a follow up error
const char *needle = dgettext("dpkg", "dependency problems - leaving unconfigured");
if(strstr(errormsg, needle) != NULL) {
std::clog << _("No apport report written because the error message indicates its a followup error from a previous failure.") << std::endl;
return;
}
// do not report disk-full failures
if(strstr(errormsg, strerror(ENOSPC)) != NULL) {
std::clog << _("No apport report written because the error message indicates a disk full error") << std::endl;
return;
}
// do not report out-of-memory failures
if(strstr(errormsg, strerror(ENOMEM)) != NULL ||
strstr(errormsg, "failed to allocate memory") != NULL) {
std::clog << _("No apport report written because the error message indicates a out of memory error") << std::endl;
return;
}
// do not report bugs regarding inaccessible local files
if(strstr(errormsg, strerror(ENOENT)) != NULL ||
strstr(errormsg, "cannot access archive") != NULL) {
std::clog << _("No apport report written because the error message indicates an issue on the local system") << std::endl;
return;
}
// do not report errors encountered when decompressing packages
if(strstr(errormsg, "--fsys-tarfile returned error exit status 2") != NULL) {
std::clog << _("No apport report written because the error message indicates an issue on the local system") << std::endl;
return;
}
// do not report dpkg I/O errors, this is a format string, so we compare
// the prefix and the suffix of the error with the dpkg error message
vector<string> io_errors;
io_errors.push_back(string("failed to read"));
io_errors.push_back(string("failed to write"));
io_errors.push_back(string("failed to seek"));
io_errors.push_back(string("unexpected end of file or stream"));
for (vector<string>::iterator I = io_errors.begin(); I != io_errors.end(); ++I)
{
vector<string> list = VectorizeString(dgettext("dpkg", (*I).c_str()), '%');
if (list.size() > 1) {
// we need to split %s, VectorizeString only allows char so we need
// to kill the "s" manually
if (list[1].size() > 1) {
list[1].erase(0, 1);
if(strstr(errormsg, list[0].c_str()) &&
strstr(errormsg, list[1].c_str())) {
std::clog << _("No apport report written because the error message indicates a dpkg I/O error") << std::endl;
return;
}
}
}
}
// get the pkgname and reportfile
pkgname = flNotDir(pkgpath);
pos = pkgname.find('_');
if(pos != string::npos)
pkgname = pkgname.substr(0, pos);
// find the package versin and source package name
pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
if (Pkg.end() == true)
return;
pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
if (Ver.end() == true)
return;
pkgver = Ver.VerStr() == NULL ? "unknown" : Ver.VerStr();
// if the file exists already, we check:
// - if it was reported already (touched by apport).
// If not, we do nothing, otherwise
// we overwrite it. This is the same behaviour as apport
// - if we have a report with the same pkgversion already
// then we skip it
reportfile = flCombine("/var/crash",pkgname+".0.crash");
if(FileExists(reportfile))
{
struct stat buf;
char strbuf[255];
// check atime/mtime
stat(reportfile.c_str(), &buf);
if(buf.st_mtime > buf.st_atime)
return;
// check if the existing report is the same version
report = fopen(reportfile.c_str(),"r");
while(fgets(strbuf, sizeof(strbuf), report) != NULL)
{
if(strstr(strbuf,"Package:") == strbuf)
{
char pkgname[255], version[255];
if(sscanf(strbuf, "Package: %254s %254s", pkgname, version) == 2)
if(strcmp(pkgver.c_str(), version) == 0)
{
fclose(report);
return;
}
}
}
fclose(report);
}
// now write the report
arch = _config->Find("APT::Architecture");
report = fopen(reportfile.c_str(),"w");
if(report == NULL)
return;
if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
chmod(reportfile.c_str(), 0);
else
chmod(reportfile.c_str(), 0600);
fprintf(report, "ProblemType: Package\n");
fprintf(report, "Architecture: %s\n", arch.c_str());
time_t now = time(NULL);
fprintf(report, "Date: %s" , ctime(&now));
fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
fprintf(report, "SourcePackage: %s\n", Ver.SourcePkgName());
fprintf(report, "ErrorMessage:\n %s\n", errormsg);
// ensure that the log is flushed
if(d->term_out)
fflush(d->term_out);
// attach terminal log it if we have it
string logfile_name = _config->FindFile("Dir::Log::Terminal");
if (!logfile_name.empty())
{
FILE *log = NULL;
fprintf(report, "DpkgTerminalLog:\n");
log = fopen(logfile_name.c_str(),"r");
if(log != NULL)
{
char buf[1024];
while( fgets(buf, sizeof(buf), log) != NULL)
fprintf(report, " %s", buf);
fprintf(report, " \n");
fclose(log);
}
}
// attach history log it if we have it
string histfile_name = _config->FindFile("Dir::Log::History");
if (!histfile_name.empty())
{
fprintf(report, "DpkgHistoryLog:\n");
FILE* log = fopen(histfile_name.c_str(),"r");
if(log != NULL)
{
char buf[1024];
while( fgets(buf, sizeof(buf), log) != NULL)
fprintf(report, " %s", buf);
fclose(log);
}
}
// log the ordering
const char *ops_str[] = {"Install", "Configure","Remove","Purge"};
fprintf(report, "AptOrdering:\n");
for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
if ((*I).Pkg != NULL)
fprintf(report, " %s: %s\n", (*I).Pkg.Name(), ops_str[(*I).Op]);
else
fprintf(report, " %s: %s\n", "NULL", ops_str[(*I).Op]);
// attach dmesg log (to learn about segfaults)
if (FileExists("/bin/dmesg"))
{
fprintf(report, "Dmesg:\n");
FILE *log = popen("/bin/dmesg","r");
if(log != NULL)
{
char buf[1024];
while( fgets(buf, sizeof(buf), log) != NULL)
fprintf(report, " %s", buf);
pclose(log);
}
}
// attach df -l log (to learn about filesystem status)
if (FileExists("/bin/df"))
{
fprintf(report, "Df:\n");
FILE *log = popen("/bin/df -l","r");
if(log != NULL)
{
char buf[1024];
while( fgets(buf, sizeof(buf), log) != NULL)
fprintf(report, " %s", buf);
pclose(log);
}
}
fclose(report);
}
/*}}}*/