Separate protocol versioning from clientversion

src/clientversion.cpp

@@ -0,0 +1,104 @@
+// Copyright (c) 2012 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "clientversion.h"
+
+#include "tinyformat.h"
+
+#include <string>
+
+// Name of client reported in the 'version' message. Report the same name
+// for both bitcoind and bitcoin-qt, to make it harder for attackers to
+// target servers or GUI users specifically.
+const std::string CLIENT_NAME("Satoshi");
+
+// Client version number
+#define CLIENT_VERSION_SUFFIX ""
+
+
+// The following part of the code determines the CLIENT_BUILD variable.
+// Several mechanisms are used for this:
+// * first, if HAVE_BUILD_INFO is defined, include build.h, a file that is
+//   generated by the build environment, possibly containing the output
+//   of git-describe in a macro called BUILD_DESC
+// * secondly, if this is an exported version of the code, GIT_ARCHIVE will
+//   be defined (automatically using the export-subst git attribute), and
+//   GIT_COMMIT will contain the commit id.
+// * then, three options exist for determining CLIENT_BUILD:
+//   * if BUILD_DESC is defined, use that literally (output of git-describe)
+//   * if not, but GIT_COMMIT is defined, use v[maj].[min].[rev].[build]-g[commit]
+//   * otherwise, use v[maj].[min].[rev].[build]-unk
+// finally CLIENT_VERSION_SUFFIX is added
+
+// First, include build.h if requested
+#ifdef HAVE_BUILD_INFO
+#include "build.h"
+#endif
+
+// git will put "#define GIT_ARCHIVE 1" on the next line inside archives. $Format:%n#define GIT_ARCHIVE 1$
+#ifdef GIT_ARCHIVE
+#define GIT_COMMIT_ID "$Format:%h$"
+#define GIT_COMMIT_DATE "$Format:%cD$"
+#endif
+
+#define BUILD_DESC_WITH_SUFFIX(maj, min, rev, build, suffix) \
+    "v" DO_STRINGIZE(maj) "." DO_STRINGIZE(min) "." DO_STRINGIZE(rev) "." DO_STRINGIZE(build) "-" DO_STRINGIZE(suffix)
+
+#define BUILD_DESC_FROM_COMMIT(maj, min, rev, build, commit) \
+    "v" DO_STRINGIZE(maj) "." DO_STRINGIZE(min) "." DO_STRINGIZE(rev) "." DO_STRINGIZE(build) "-g" commit
+
+#define BUILD_DESC_FROM_UNKNOWN(maj, min, rev, build) \
+    "v" DO_STRINGIZE(maj) "." DO_STRINGIZE(min) "." DO_STRINGIZE(rev) "." DO_STRINGIZE(build) "-unk"
+
+#ifndef BUILD_DESC
+#ifdef BUILD_SUFFIX
+#define BUILD_DESC BUILD_DESC_WITH_SUFFIX(CLIENT_VERSION_MAJOR, CLIENT_VERSION_MINOR, CLIENT_VERSION_REVISION, CLIENT_VERSION_BUILD, BUILD_SUFFIX)
+#elif defined(GIT_COMMIT_ID)
+#define BUILD_DESC BUILD_DESC_FROM_COMMIT(CLIENT_VERSION_MAJOR, CLIENT_VERSION_MINOR, CLIENT_VERSION_REVISION, CLIENT_VERSION_BUILD, GIT_COMMIT_ID)
+#else
+#define BUILD_DESC BUILD_DESC_FROM_UNKNOWN(CLIENT_VERSION_MAJOR, CLIENT_VERSION_MINOR, CLIENT_VERSION_REVISION, CLIENT_VERSION_BUILD)
+#endif
+#endif
+
+#ifndef BUILD_DATE
+#ifdef GIT_COMMIT_DATE
+#define BUILD_DATE GIT_COMMIT_DATE
+#else
+#define BUILD_DATE __DATE__ ", " __TIME__
+#endif
+#endif
+
+const std::string CLIENT_BUILD(BUILD_DESC CLIENT_VERSION_SUFFIX);
+const std::string CLIENT_DATE(BUILD_DATE);
+
+static std::string FormatVersion(int nVersion)
+{
+    if (nVersion % 100 == 0)
+        return strprintf("%d.%d.%d", nVersion / 1000000, (nVersion / 10000) % 100, (nVersion / 100) % 100);
+    else
+        return strprintf("%d.%d.%d.%d", nVersion / 1000000, (nVersion / 10000) % 100, (nVersion / 100) % 100, nVersion % 100);
+}
+
+std::string FormatFullVersion()
+{
+    return CLIENT_BUILD;
+}
+
+// Format the subversion field according to BIP 14 spec (https://en.bitcoin.it/wiki/BIP_0014)
+std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments)
+{
+    std::ostringstream ss;
+    ss << "/";
+    ss << name << ":" << FormatVersion(nClientVersion);
+    if (!comments.empty())
+    {
+        std::vector<std::string>::const_iterator it(comments.begin());
+        ss << "(" << *it;
+        for(++it; it != comments.end(); ++it)
+            ss << "; " << *it;
+        ss << ")";
+    }
+    ss << "/";
+    return ss.str();
+}