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77 lines
2.9 KiB
77 lines
2.9 KiB
// -*- mode: cpp; mode: fold -*-
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// Description /*{{{*/
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/* ######################################################################
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Helpers to deal with gpgv better and more easily
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##################################################################### */
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/*}}}*/
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#ifndef CONTRIB_GPGV_H
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#define CONTRIB_GPGV_H
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#include <string>
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#include <vector>
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#if __GNUC__ >= 4
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#define APT_noreturn __attribute__ ((noreturn))
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#else
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#define APT_noreturn /* no support */
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#endif
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/** \brief generates and run the command to verify a file with gpgv
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*
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* If File and FileSig specify the same file it is assumed that we
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* deal with a clear-signed message. In that case the file will be
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* rewritten to be in a good-known format without uneeded whitespaces
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* and additional messages (unsigned or signed).
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*
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* @param File is the message (unsigned or clear-signed)
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* @param FileSig is the signature (detached or clear-signed)
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*/
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void ExecGPGV(std::string const &File, std::string const &FileSig,
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int const &statusfd, int fd[2]) APT_noreturn;
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inline void ExecGPGV(std::string const &File, std::string const &FileSig,
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int const &statusfd = -1) {
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int fd[2];
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ExecGPGV(File, FileSig, statusfd, fd);
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};
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#undef APT_noreturn
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/** \brief Split an inline signature into message and signature
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*
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* Takes a clear-signed message and puts the first signed message
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* in the content file and all signatures following it into the
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* second. Unsigned messages, additional messages as well as
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* whitespaces are discarded. The resulting files are suitable to
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* be checked with gpgv.
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*
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* If one or all Fds are -1 they will not be used and the content
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* which would have been written to them is discarded.
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*
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* The code doesn't support dash-encoded lines as these are not
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* expected to be present in files we have to deal with.
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*
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* @param InFile is the clear-signed file
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* @param ContentFile is the Fd the message will be written to
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* @param ContentHeader is a list of all required Amored Headers for the message
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* @param SignatureFile is the Fd all signatures will be written to
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*/
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bool SplitClearSignedFile(std::string const &InFile, int const ContentFile,
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std::vector<std::string> * const ContentHeader, int const SignatureFile);
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/** \brief recombines message and signature to an inline signature
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*
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* Reverses the splitting down by #SplitClearSignedFile by writing
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* a well-formed clear-signed message without unsigned messages,
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* additional signed messages or just trailing whitespaces
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*
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* @param OutFile will be clear-signed file
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* @param ContentFile is the Fd the message will be read from
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* @param ContentHeader is a list of all required Amored Headers for the message
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* @param SignatureFile is the Fd all signatures will be read from
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*/
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bool RecombineToClearSignedFile(std::string const &OutFile, int const ContentFile,
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std::vector<std::string> const &ContentHeader, int const SignatureFile);
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#endif
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