From 99ed26d32226f0dffe5a37fb78c5588f9d9ecfd5 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Fri, 15 Mar 2013 14:29:46 +0100
Subject: * apt-pkg/contrib/gpgv.cc:   - ExecGPGV is a method which should
 never return, so mark it as such     and fix the inconsistency of returning
 in error cases

---
 apt-pkg/contrib/gpgv.cc | 22 ++++++++++++++++------
 apt-pkg/contrib/gpgv.h  | 26 ++++++++++++++++++++------
 2 files changed, 36 insertions(+), 12 deletions(-)

(limited to 'apt-pkg/contrib')

diff --git a/apt-pkg/contrib/gpgv.cc b/apt-pkg/contrib/gpgv.cc
index 9b008dd4f..9760bd21f 100644
--- a/apt-pkg/contrib/gpgv.cc
+++ b/apt-pkg/contrib/gpgv.cc
@@ -25,20 +25,28 @@ using namespace std;
 // ---------------------------------------------------------------------
 /* 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,
+void ExecGPGV(std::string const &File, std::string const &FileGPG,
 			int const &statusfd, int fd[2])
 {
+   #define EINTERNAL 111
+
    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());
+      {
+	 ioprintf(std::cerr, _("Could not open file %s"), File.c_str());
+	 exit(EINTERNAL);
+      }
       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());
+      {
+	 ioprintf(std::cerr, _("File %s doesn't start with a clearsigned message"), File.c_str());
+	 exit(EINTERNAL);
+      }
       #undef SIGMSG
    }
 
@@ -69,8 +77,9 @@ bool ExecGPGV(std::string const &File, std::string const &FileGPG,
    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());
+      ioprintf(std::cerr, _("No keyring installed in %s."),
+	    _config->FindDir("Dir::Etc::TrustedParts").c_str());
+      exit(EINTERNAL);
    }
 
    Args.push_back(gpgvpath.c_str());
@@ -133,6 +142,7 @@ bool ExecGPGV(std::string const &File, std::string const &FileGPG,
    }
 
    execvp(gpgvpath.c_str(), (char **) &Args[0]);
-   return true;
+   ioprintf(std::cerr, "Couldn't execute %s to check %s", Args[0], File.c_str());
+   exit(EINTERNAL);
 }
 									/*}}}*/
diff --git a/apt-pkg/contrib/gpgv.h b/apt-pkg/contrib/gpgv.h
index c15166c94..8aeea2fb3 100644
--- a/apt-pkg/contrib/gpgv.h
+++ b/apt-pkg/contrib/gpgv.h
@@ -11,14 +11,28 @@
 
 #include <string>
 
-/** \brief generates and run the command to verify a file with gpgv */
-bool ExecGPGV(std::string const &File, std::string const &FileOut,
-      int const &statusfd, int fd[2]);
+#if __GNUC__ >= 4
+	#define APT_noreturn	__attribute__ ((noreturn))
+#else
+	#define APT_noreturn	/* no support */
+#endif
 
-inline bool ExecGPGV(std::string const &File, std::string const &FileOut,
+/** \brief generates and run the command to verify a file with gpgv
+ *
+ * If File and FileSig specify the same file it is assumed that we
+ * deal with a clear-signed message.
+ *
+ * @param File is the message (unsigned or clear-signed)
+ * @param FileSig is the signature (detached or clear-signed)
+ */
+void ExecGPGV(std::string const &File, std::string const &FileSig,
+      int const &statusfd, int fd[2]) APT_noreturn;
+inline void ExecGPGV(std::string const &File, std::string const &FileSig,
       int const &statusfd = -1) {
    int fd[2];
-   return ExecGPGV(File, FileOut, statusfd, fd);
-}
+   ExecGPGV(File, FileSig, statusfd, fd);
+};
+
+#undef APT_noreturn
 
 #endif
-- 
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