refactor: Remove hooking code for urlDecode

The point of this was to be able to build bitcoin-tx and bitcoin-wallet without libevent, see #18504.

Now that we use our own implementation of urlDecode this is not needed anymore.

Co-authored-by: stickies-v <stickies-v@protonmail.com>

src/bitcoin-cli.cpp

@@ -11,7 +11,6 @@
 #include <clientversion.h>
 #include <common/args.h>
 #include <common/system.h>
-#include <common/url.h>
 #include <compat/compat.h>
 #include <compat/stdin.h>
 #include <policy/feerate.h>
@@ -51,7 +50,6 @@
 using CliClock = std::chrono::system_clock;
 
 const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
-UrlDecodeFn* const URL_DECODE = urlDecode;
 
 static const char DEFAULT_RPCCONNECT[] = "127.0.0.1";
 static const int DEFAULT_HTTP_CLIENT_TIMEOUT=900;

src/bitcoin-wallet.cpp

@@ -11,7 +11,6 @@
 #include <clientversion.h>
 #include <common/args.h>
 #include <common/system.h>
-#include <common/url.h>
 #include <compat/compat.h>
 #include <interfaces/init.h>
 #include <key.h>
@@ -28,7 +27,6 @@
 #include <tuple>
 
 const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
-UrlDecodeFn* const URL_DECODE = nullptr;
 
 static void SetupWalletToolArgs(ArgsManager& argsman)
 {

src/bitcoind.cpp

@@ -12,7 +12,6 @@
 #include <common/args.h>
 #include <common/init.h>
 #include <common/system.h>
-#include <common/url.h>
 #include <compat/compat.h>
 #include <init.h>
 #include <interfaces/chain.h>
@@ -35,7 +34,6 @@
 using node::NodeContext;
 
 const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
-UrlDecodeFn* const URL_DECODE = urlDecode;
 
 #if HAVE_DECL_FORK
 

src/common/url.h

@@ -8,8 +8,10 @@
 #include <string>
 #include <string_view>
 
-using UrlDecodeFn = std::string(std::string_view url_encoded);
+/* Decode a URL.
-UrlDecodeFn urlDecode;
+ *
-extern UrlDecodeFn* const URL_DECODE;
+ * Notably this implementation does not decode a '+' to a ' '.
+ */
+std::string urlDecode(std::string_view url_encoded);
 
 #endif // BITCOIN_COMMON_URL_H

src/qt/main.cpp

@@ -4,7 +4,6 @@
 
 #include <qt/bitcoin.h>
 
-#include <common/url.h>
 #include <compat/compat.h>
 #include <util/translation.h>
 
@@ -17,7 +16,6 @@
 extern const std::function<std::string(const char*)> G_TRANSLATION_FUN = [](const char* psz) {
     return QCoreApplication::translate("bitcoin-core", psz).toStdString();
 };
-UrlDecodeFn* const URL_DECODE = urlDecode;
 
 const std::function<std::string()> G_TEST_GET_FULL_NAME{};
 

src/test/util/setup_common.cpp

@@ -14,7 +14,6 @@
 #include <banman.h>
 #include <chainparams.h>
 #include <common/system.h>
-#include <common/url.h>
 #include <consensus/consensus.h>
 #include <consensus/params.h>
 #include <consensus/validation.h>
@@ -81,7 +80,6 @@ using node::RegenerateCommitments;
 using node::VerifyLoadedChainstate;
 
 const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
-UrlDecodeFn* const URL_DECODE = nullptr;
 
 /** Random context to get unique temp data dirs. Separate from g_insecure_rand_ctx, which can be seeded from a const env var */
 static FastRandomContext g_insecure_rand_ctx_temp_path;

src/wallet/rpc/util.cpp

@@ -62,9 +62,9 @@ bool ParseIncludeWatchonly(const UniValue& include_watchonly, const CWallet& wal
 
 bool GetWalletNameFromJSONRPCRequest(const JSONRPCRequest& request, std::string& wallet_name)
 {
-    if (URL_DECODE && request.URI.starts_with(WALLET_ENDPOINT_BASE)) {
+    if (request.URI.starts_with(WALLET_ENDPOINT_BASE)) {
         // wallet endpoint was used
-        wallet_name = URL_DECODE(std::string_view{request.URI}.substr(WALLET_ENDPOINT_BASE.size()));
+        wallet_name = urlDecode(std::string_view{request.URI}.substr(WALLET_ENDPOINT_BASE.size()));
         return true;
     }
     return false;