* apt-pkg/indexcopy.cc:

  - rename RunGPGV to ExecGPGV and move it to apt-pkg/contrib/gpgv.cc

1 files changed, 138 insertions, 0 deletions

diff --git a/apt-pkg/contrib/gpgv.cc b/apt-pkg/contrib/gpgv.cc
new file mode 100644
index 000000000..9b008dd4f
--- /dev/null
+++ b/apt-pkg/contrib/gpgv.cc
@@ -0,0 +1,138 @@
+// -*- 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;
+}
+									/*}}}*/