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Adding missing check that a plugin's API version matches what Bro defines.

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This commit is contained in:
Robin Sommer 2014-07-31 10:08:50 -07:00
parent 024c26d982
commit 382b946098
5 changed files with 27 additions and 9 deletions
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4
src/plugin/Manager.cc
View file

@ -219,6 +219,10 @@ bool Manager::ActivateDynamicPluginInternal(const std::string& name, bool ok_if_
current_plugin->SetDynamic(true);
current_plugin->DoConfigure();
if ( current_plugin->APIVersion() != BRO_PLUGIN_API_VERSION )
reporter->FatalError("plugin's API version does not match Bro (expected %d, got %d in %s)",
BRO_PLUGIN_API_VERSION, current_plugin->APIVersion(), path);
// We execute the pre-script initialization here; this in
// fact could be *during* script initialization if we got
// triggered via @load-plugin.

7
src/plugin/Plugin.cc
View file

@ -33,13 +33,6 @@ const char* plugin::hook_name(HookType h)
return hook_names[int(h)];
}
Configuration::Configuration()
{
name = "";
description = "";
api_version = BRO_PLUGIN_API_VERSION;
}
BifItem::BifItem(const std::string& arg_id, Type arg_type)
{
id = arg_id;

17
src/plugin/Plugin.h
View file

@ -10,7 +10,10 @@
#include "analyzer/Component.h"
#include "file_analysis/Component.h"
static const int BRO_PLUGIN_API_VERSION = 2;
// We allow to override this externally for testing purposes.
#ifndef BRO_PLUGIN_API_VERSION
#define BRO_PLUGIN_API_VERSION 2
#endif
class ODesc;
class Func;
@ -75,13 +78,23 @@ public:
std::string description; //< A short textual description of the plugin. Mandatory.
VersionNumber version; //< THe plugin's version. Optional.
Configuration();
// We force this to inline so that the API version gets hardcoded
// into the external plugin. (Technically, it's not a "force", just a
// strong hint.). The attribute seems generally available.
inline Configuration() __attribute__((always_inline));
private:
friend class Plugin;
int api_version; // Current BRO_PLUGIN_API_VERSION. Automatically set.
};
inline Configuration::Configuration()
{
name = "";
description = "";
api_version = BRO_PLUGIN_API_VERSION;
}
/**
* A class describing an item defined in \c *.bif file.
*/

1
testing/btest/Baseline/plugins.api-version-mismatch/output Normal file
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@ -0,0 +1 @@
fatal error in /home/robin/bro/master/scripts/base/init-bare.bro, line 1: plugin's API version does not match Bro (expected 2, got 42 in /home/robin/bro/master/testing/btest/.tmp/plugins.api-version-mismatch//lib/Demo-Foo.linux-x86_64.so)

7
testing/btest/plugins/api-version-mismatch.sh Normal file
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@ -0,0 +1,7 @@
# @TEST-EXEC: ${DIST}/aux/bro-aux/plugin-support/init-plugin Demo Foo
# @TEST-EXEC: bash %INPUT
# @TEST-EXEC: make BRO=${DIST}
# @TEST-EXEC-FAIL: BRO_PLUGIN_PATH=`pwd` bro -NN Demo::Foo >>output 2>&1
# @TEST-EXEC: btest-diff output
( echo '#define BRO_PLUGIN_API_VERSION 42'; cat src/Plugin.cc; ) >src/Plugin.cc.tmp && mv src/Plugin.cc.tmp src/Plugin.cc