+// -*- 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;
+}
+ /*}}}*/
projects / apt.git / commitdiff
