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// -*- mode: cpp; mode: fold -*-
// Include Files /*{{{*/
#include<config.h>
#include <iostream>
#include <sstream>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <apt-pkg/error.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/configuration.h>
#include <apti18n.h>
/*}}}*/
using namespace std;
// RunGPGV - returns the command needed for verify /*{{{*/
// ---------------------------------------------------------------------
/* Generating the commandline for calling gpgv is somehow complicated as
we need to add multiple keyrings and user supplied options. */
bool ExecGPGV(std::string const &File, std::string const &FileGPG,
int const &statusfd, int fd[2])
{
if (File == FileGPG)
{
#define SIGMSG "-----BEGIN PGP SIGNED MESSAGE-----\n"
char buffer[sizeof(SIGMSG)];
FILE* gpg = fopen(File.c_str(), "r");
if (gpg == NULL)
return _error->Errno("RunGPGV", _("Could not open file %s"), File.c_str());
char const * const test = fgets(buffer, sizeof(buffer), gpg);
fclose(gpg);
if (test == NULL || strcmp(buffer, SIGMSG) != 0)
return _error->Error(_("File %s doesn't start with a clearsigned message"), File.c_str());
#undef SIGMSG
}
string const gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv");
// FIXME: remove support for deprecated APT::GPGV setting
string const trustedFile = _config->Find("APT::GPGV::TrustedKeyring", _config->FindFile("Dir::Etc::Trusted"));
string const trustedPath = _config->FindDir("Dir::Etc::TrustedParts");
bool const Debug = _config->FindB("Debug::Acquire::gpgv", false);
if (Debug == true)
{
std::clog << "gpgv path: " << gpgvpath << std::endl;
std::clog << "Keyring file: " << trustedFile << std::endl;
std::clog << "Keyring path: " << trustedPath << std::endl;
}
std::vector<string> keyrings;
if (DirectoryExists(trustedPath))
keyrings = GetListOfFilesInDir(trustedPath, "gpg", false, true);
if (RealFileExists(trustedFile) == true)
keyrings.push_back(trustedFile);
std::vector<const char *> Args;
Args.reserve(30);
if (keyrings.empty() == true)
{
// TRANSLATOR: %s is the trusted keyring parts directory
return _error->Error(_("No keyring installed in %s."),
_config->FindDir("Dir::Etc::TrustedParts").c_str());
}
Args.push_back(gpgvpath.c_str());
Args.push_back("--ignore-time-conflict");
if (statusfd != -1)
{
Args.push_back("--status-fd");
char fd[10];
snprintf(fd, sizeof(fd), "%i", statusfd);
Args.push_back(fd);
}
for (vector<string>::const_iterator K = keyrings.begin();
K != keyrings.end(); ++K)
{
Args.push_back("--keyring");
Args.push_back(K->c_str());
}
Configuration::Item const *Opts;
Opts = _config->Tree("Acquire::gpgv::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());
}
}
Args.push_back(FileGPG.c_str());
if (FileGPG != File)
Args.push_back(File.c_str());
Args.push_back(NULL);
if (Debug == true)
{
std::clog << "Preparing to exec: " << gpgvpath;
for (std::vector<const char *>::const_iterator a = Args.begin(); *a != NULL; ++a)
std::clog << " " << *a;
std::clog << std::endl;
}
if (statusfd != -1)
{
int const nullfd = open("/dev/null", O_RDONLY);
close(fd[0]);
// Redirect output to /dev/null; we read from the status fd
dup2(nullfd, STDOUT_FILENO);
dup2(nullfd, STDERR_FILENO);
// Redirect the pipe to the status fd (3)
dup2(fd[1], statusfd);
putenv((char *)"LANG=");
putenv((char *)"LC_ALL=");
putenv((char *)"LC_MESSAGES=");
}
execvp(gpgvpath.c_str(), (char **) &Args[0]);
return true;
}
/*}}}*/
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