From 0854ad8b8016d0132741a267492d72cfa0d3bd8e Mon Sep 17 00:00:00 2001 From: Michael Vogt Date: Thu, 21 Jun 2012 12:32:56 +0200 Subject: check when finished downloading the InRelease file if it has the expected gpg clearsign signature and if not download Release/Release.gpg instead --- apt-pkg/contrib/fileutl.cc | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'apt-pkg/contrib/fileutl.cc') diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index 1808489d7..7af5f5f5e 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -824,6 +824,26 @@ bool ExecWait(pid_t Pid,const char *Name,bool Reap) } /*}}}*/ +// IsPgpClearTextSignature - Check if a file is Pgp/GPG clearsigned /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool IsPgpClearTextSignature(string const &FileName) +{ + static const char* SIGMSG = "-----BEGIN PGP SIGNED MESSAGE-----\n"; + char buffer[sizeof(SIGMSG)]; + FILE* gpg = fopen(FileName.c_str(), "r"); + if (gpg == NULL) + return false; + + char const * const test = fgets(buffer, sizeof(buffer), gpg); + fclose(gpg); + if (test == NULL || strcmp(buffer, SIGMSG) != 0) + return false; + + return true; +} + + // FileFd::Open - Open a file /*{{{*/ // --------------------------------------------------------------------- /* The most commonly used open mode combinations are given with Mode */ -- cgit v1.2.3