Util: Remove redundant calls to gArgs.IsArgSet()

Return empty std::vector<std::string> with ArgsManager::GetArgs if
nothing is set for that string

src/httprpc.cpp

@@ -92,10 +92,8 @@ static bool multiUserAuthorized(std::string strUserPass)
     std::string strUser = strUserPass.substr(0, strUserPass.find(":"));
     std::string strPass = strUserPass.substr(strUserPass.find(":") + 1);
 
-    if (gArgs.IsArgSet("-rpcauth")) {
+    for (const std::string& strRPCAuth : gArgs.GetArgs("-rpcauth")) {
         //Search for multi-user login/pass "rpcauth" from config
-        for (std::string strRPCAuth : gArgs.GetArgs("-rpcauth"))
-        {
             std::vector<std::string> vFields;
             boost::split(vFields, strRPCAuth, boost::is_any_of(":$"));
             if (vFields.size() != 3) {
@@ -121,7 +119,6 @@ static bool multiUserAuthorized(std::string strUserPass)
             if (TimingResistantEqual(strHashFromPass, strHash)) {
                 return true;
             }
-        }
     }
     return false;
 }

src/httpserver.cpp

@@ -196,8 +196,7 @@ static bool InitHTTPAllowList()
     LookupHost("::1", localv6, false);
     rpc_allow_subnets.push_back(CSubNet(localv4, 8));      // always allow IPv4 local subnet
     rpc_allow_subnets.push_back(CSubNet(localv6));         // always allow IPv6 localhost
-    if (gArgs.IsArgSet("-rpcallowip")) {
-        for (const std::string& strAllow : gArgs.GetArgs("-rpcallowip")) {
+    for (const std::string& strAllow : gArgs.GetArgs("-rpcallowip")) {
             CSubNet subnet;
             LookupSubNet(strAllow.c_str(), subnet);
             if (!subnet.IsValid()) {
@@ -207,7 +206,6 @@ static bool InitHTTPAllowList()
                 return false;
             }
             rpc_allow_subnets.push_back(subnet);
-        }
     }
     std::string strAllowed;
     for (const CSubNet& subnet : rpc_allow_subnets)

src/init.cpp

@@ -880,9 +880,7 @@ bool AppInitParameterInteraction()
     }
 
     // -bind and -whitebind can't be set when not listening
-    size_t nUserBind =
-        (gArgs.IsArgSet("-bind") ? gArgs.GetArgs("-bind").size() : 0) +
-        (gArgs.IsArgSet("-whitebind") ? gArgs.GetArgs("-whitebind").size() : 0);
+    size_t nUserBind = gArgs.GetArgs("-bind").size() + gArgs.GetArgs("-whitebind").size();
     if (nUserBind != 0 && !gArgs.GetBoolArg("-listen", DEFAULT_LISTEN)) {
         return InitError("Cannot set -bind or -whitebind together with -listen=0");
     }
@@ -920,15 +918,13 @@ bool AppInitParameterInteraction()
     }
 
     // Now remove the logging categories which were explicitly excluded
-    if (gArgs.IsArgSet("-debugexclude")) {
-        for (const std::string& cat : gArgs.GetArgs("-debugexclude")) {
+    for (const std::string& cat : gArgs.GetArgs("-debugexclude")) {
             uint32_t flag = 0;
             if (!GetLogCategory(&flag, &cat)) {
                 InitWarning(strprintf(_("Unsupported logging category %s=%s."), "-debugexclude", cat));
                 continue;
             }
             logCategories &= ~flag;
-        }
     }
 
     // Check for -debugnet
@@ -1238,13 +1234,10 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     // sanitize comments per BIP-0014, format user agent and check total size
     std::vector<std::string> uacomments;
-    if (gArgs.IsArgSet("-uacomment")) {
-        for (std::string cmt : gArgs.GetArgs("-uacomment"))
-        {
+    for (const std::string& cmt : gArgs.GetArgs("-uacomment")) {
             if (cmt != SanitizeString(cmt, SAFE_CHARS_UA_COMMENT))
                 return InitError(strprintf(_("User Agent comment (%s) contains unsafe characters."), cmt));
             uacomments.push_back(cmt);
-        }
     }
     strSubVersion = FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, uacomments);
     if (strSubVersion.size() > MAX_SUBVERSION_LENGTH) {
@@ -1317,14 +1310,12 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
     fDiscover = GetBoolArg("-discover", true);
     fRelayTxes = !GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY);
 
-    if (gArgs.IsArgSet("-externalip")) {
-        for (const std::string& strAddr : gArgs.GetArgs("-externalip")) {
+    for (const std::string& strAddr : gArgs.GetArgs("-externalip")) {
             CService addrLocal;
             if (Lookup(strAddr.c_str(), addrLocal, GetListenPort(), fNameLookup) && addrLocal.IsValid())
                 AddLocal(addrLocal, LOCAL_MANUAL);
             else
                 return InitError(ResolveErrMsg("externalip", strAddr));
-        }
     }
 
 #if ENABLE_ZMQ
@@ -1553,10 +1544,8 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
         uiInterface.NotifyBlockTip.connect(BlockNotifyCallback);
 
     std::vector<fs::path> vImportFiles;
-    if (gArgs.IsArgSet("-loadblock"))
-    {
-        for (const std::string& strFile : gArgs.GetArgs("-loadblock"))
-            vImportFiles.push_back(strFile);
+    for (const std::string& strFile : gArgs.GetArgs("-loadblock")) {
+        vImportFiles.push_back(strFile);
     }
 
     threadGroup.create_thread(boost::bind(&ThreadImport, vImportFiles));
@@ -1598,17 +1587,14 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
     connOptions.nMaxOutboundTimeframe = nMaxOutboundTimeframe;
     connOptions.nMaxOutboundLimit = nMaxOutboundLimit;
 
-    if (gArgs.IsArgSet("-bind")) {
-        for (const std::string& strBind : gArgs.GetArgs("-bind")) {
+    for (const std::string& strBind : gArgs.GetArgs("-bind")) {
             CService addrBind;
             if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false)) {
                 return InitError(ResolveErrMsg("bind", strBind));
             }
             connOptions.vBinds.push_back(addrBind);
-        }
     }
-    if (gArgs.IsArgSet("-whitebind")) {
-        for (const std::string& strBind : gArgs.GetArgs("-whitebind")) {
+    for (const std::string& strBind : gArgs.GetArgs("-whitebind")) {
             CService addrBind;
             if (!Lookup(strBind.c_str(), addrBind, 0, false)) {
                 return InitError(ResolveErrMsg("whitebind", strBind));
@@ -1617,17 +1603,14 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
                 return InitError(strprintf(_("Need to specify a port with -whitebind: '%s'"), strBind));
             }
             connOptions.vWhiteBinds.push_back(addrBind);
-        }
     }
 
-    if (gArgs.IsArgSet("-whitelist")) {
-        for (const auto& net : gArgs.GetArgs("-whitelist")) {
+    for (const auto& net : gArgs.GetArgs("-whitelist")) {
             CSubNet subnet;
             LookupSubNet(net.c_str(), subnet);
             if (!subnet.IsValid())
                 return InitError(strprintf(_("Invalid netmask specified in -whitelist: '%s'"), net));
             connOptions.vWhitelistedRange.push_back(subnet);
-        }
     }
 
     if (gArgs.IsArgSet("-seednode")) {

src/net.cpp

@@ -1677,7 +1677,7 @@ void CConnman::ProcessOneShot()
 void CConnman::ThreadOpenConnections()
 {
     // Connect to specific addresses
-    if (gArgs.IsArgSet("-connect") && gArgs.GetArgs("-connect").size() > 0)
+    if (gArgs.IsArgSet("-connect"))
     {
         for (int64_t nLoop = 0;; nLoop++)
         {
@@ -1903,8 +1903,7 @@ void CConnman::ThreadOpenAddedConnections()
 {
     {
         LOCK(cs_vAddedNodes);
-        if (gArgs.IsArgSet("-addnode"))
-            vAddedNodes = gArgs.GetArgs("-addnode");
+        vAddedNodes = gArgs.GetArgs("-addnode");
     }
 
     while (true)

src/util.cpp

@@ -420,7 +420,9 @@ void ArgsManager::ParseParameters(int argc, const char* const argv[])
 std::vector<std::string> ArgsManager::GetArgs(const std::string& strArg)
 {
     LOCK(cs_args);
-    return mapMultiArgs.at(strArg);
+    if (IsArgSet(strArg))
+        return mapMultiArgs.at(strArg);
+    return {};
 }
 
 bool ArgsManager::IsArgSet(const std::string& strArg)