init: Sanity check LevelDB build/runtime versions

Author: luke-jr

src/dbwrapper.cpp

@@ -6,18 +6,21 @@
 
 #include <logging.h>
 #include <random.h>
+#include <node/interface_ui.h>
 #include <serialize.h>
 #include <span.h>
 #include <streams.h>
 #include <util/fs.h>
 #include <util/fs_helpers.h>
 #include <util/strencodings.h>
+#include <util/translation.h>
 
 #include <algorithm>
 #include <cassert>
 #include <cstdarg>
 #include <cstdint>
 #include <cstdio>
+#include <leveldb/c.h>
 #include <leveldb/cache.h>
 #include <leveldb/db.h>
 #include <leveldb/env.h>
@@ -51,6 +54,22 @@ static void HandleError(const leveldb::Status& status)
     throw dbwrapper_error(errmsg);
 }
 
+bool dbwrapper_SanityCheck()
+{
+    unsigned long header_version = (leveldb::kMajorVersion << 16) | leveldb::kMinorVersion;
+    unsigned long library_version = (leveldb_major_version() << 16) | leveldb_minor_version();
+
+    if (header_version != library_version) {
+        InitError(Untranslated(strprintf("Compiled with LevelDB %d.%d, but linked with LevelDB %d.%d (incompatible).",
+            leveldb::kMajorVersion, leveldb::kMinorVersion,
+            leveldb_major_version(), leveldb_minor_version()
+        )));
+        return false;
+    }
+
+    return true;
+}
+
 class CBitcoinLevelDBLogger : public leveldb::Logger {
 public:
     // This code is adapted from posix_logger.h, which is why it is using vsprintf.

src/dbwrapper.h

@@ -20,6 +20,8 @@
 #include <string>
 #include <vector>
 
+bool dbwrapper_SanityCheck();
+
 static const size_t DBWRAPPER_PREALLOC_KEY_SIZE = 64;
 static const size_t DBWRAPPER_PREALLOC_VALUE_SIZE = 1024;
 

src/kernel/checks.cpp

@@ -4,6 +4,7 @@
 
 #include <kernel/checks.h>
 
+#include <dbwrapper.h>
 #include <random.h>
 #include <util/result.h>
 #include <util/translation.h>
@@ -14,6 +15,10 @@ namespace kernel {
 
 util::Result<void> SanityChecks(const Context&)
 {
+    if (!dbwrapper_SanityCheck()) {
+        return util::Error{Untranslated("Database sanity check failure. Aborting.")};
+    }
+
     if (!Random_SanityCheck()) {
         return util::Error{Untranslated("OS cryptographic RNG sanity check failure. Aborting.")};
     }