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authorMichael Vogt <michael.vogt@ubuntu.com>2013-03-16 09:15:46 +0100
committerMichael Vogt <michael.vogt@ubuntu.com>2013-03-16 09:15:46 +0100
commita7e6a0ccd0328bd3c4292528225def929c36f607 (patch)
treeb5337b311f7ed3801ddc11c772d91a6b4b99cc87 /apt-pkg/contrib/gpgv.h
parent55971004215609a02ca19c59bd058da20729ba11 (diff)
parent2d3fe9cfadb33556b7563a98bb5a4698888e6c40 (diff)
merged from davids bundle
Diffstat (limited to 'apt-pkg/contrib/gpgv.h')
-rw-r--r--apt-pkg/contrib/gpgv.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/apt-pkg/contrib/gpgv.h b/apt-pkg/contrib/gpgv.h
new file mode 100644
index 000000000..8e04855e4
--- /dev/null
+++ b/apt-pkg/contrib/gpgv.h
@@ -0,0 +1,77 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* ######################################################################
+
+ Helpers to deal with gpgv better and more easily
+
+ ##################################################################### */
+ /*}}}*/
+#ifndef CONTRIB_GPGV_H
+#define CONTRIB_GPGV_H
+
+#include <string>
+#include <vector>
+
+#if __GNUC__ >= 4
+ #define APT_noreturn __attribute__ ((noreturn))
+#else
+ #define APT_noreturn /* no support */
+#endif
+
+/** \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. In that case the file will be
+ * rewritten to be in a good-known format without uneeded whitespaces
+ * and additional messages (unsigned or signed).
+ *
+ * @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];
+ ExecGPGV(File, FileSig, statusfd, fd);
+};
+
+#undef APT_noreturn
+
+/** \brief Split an inline signature into message and signature
+ *
+ * Takes a clear-signed message and puts the first signed message
+ * in the content file and all signatures following it into the
+ * second. Unsigned messages, additional messages as well as
+ * whitespaces are discarded. The resulting files are suitable to
+ * be checked with gpgv.
+ *
+ * If one or all Fds are -1 they will not be used and the content
+ * which would have been written to them is discarded.
+ *
+ * The code doesn't support dash-encoded lines as these are not
+ * expected to be present in files we have to deal with.
+ *
+ * @param InFile is the clear-signed file
+ * @param ContentFile is the Fd the message will be written to
+ * @param ContentHeader is a list of all required Amored Headers for the message
+ * @param SignatureFile is the Fd all signatures will be written to
+ */
+bool SplitClearSignedFile(std::string const &InFile, int const ContentFile,
+ std::vector<std::string> * const ContentHeader, int const SignatureFile);
+
+/** \brief recombines message and signature to an inline signature
+ *
+ * Reverses the splitting down by #SplitClearSignedFile by writing
+ * a well-formed clear-signed message without unsigned messages,
+ * additional signed messages or just trailing whitespaces
+ *
+ * @param OutFile will be clear-signed file
+ * @param ContentFile is the Fd the message will be read from
+ * @param ContentHeader is a list of all required Amored Headers for the message
+ * @param SignatureFile is the Fd all signatures will be read from
+ */
+bool RecombineToClearSignedFile(std::string const &OutFile, int const ContentFile,
+ std::vector<std::string> const &ContentHeader, int const SignatureFile);
+
+#endif