LCOV - code coverage report
Current view: top level - src/rpc - server.h (source / functions) Hit Total Coverage
Test: fuzz_coverage.info Lines: 12 18 66.7 %
Date: 2023-11-06 23:13:05 Functions: 3 12 25.0 %
Branches: 5 16 31.2 %

           Branch data     Line data    Source code
       1                 :            : // Copyright (c) 2010 Satoshi Nakamoto
       2                 :            : // Copyright (c) 2009-2021 The Bitcoin Core developers
       3                 :            : // Distributed under the MIT software license, see the accompanying
       4                 :            : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       5                 :            : 
       6                 :            : #ifndef BITCOIN_RPC_SERVER_H
       7                 :            : #define BITCOIN_RPC_SERVER_H
       8                 :            : 
       9                 :            : #include <rpc/request.h>
      10                 :            : #include <rpc/util.h>
      11                 :            : 
      12                 :            : #include <functional>
      13                 :            : #include <map>
      14                 :            : #include <stdint.h>
      15                 :            : #include <string>
      16                 :            : 
      17                 :            : #include <univalue.h>
      18                 :            : 
      19                 :            : static const unsigned int DEFAULT_RPC_SERIALIZE_VERSION = 1;
      20                 :            : 
      21                 :            : class CRPCCommand;
      22                 :            : 
      23                 :            : namespace RPCServer
      24                 :            : {
      25                 :            :     void OnStarted(std::function<void ()> slot);
      26                 :            :     void OnStopped(std::function<void ()> slot);
      27                 :            : }
      28                 :            : 
      29                 :            : /** Query whether RPC is running */
      30                 :            : bool IsRPCRunning();
      31                 :            : 
      32                 :            : /** Throw JSONRPCError if RPC is not running */
      33                 :            : void RpcInterruptionPoint();
      34                 :            : 
      35                 :            : /**
      36                 :            :  * Set the RPC warmup status.  When this is done, all RPC calls will error out
      37                 :            :  * immediately with RPC_IN_WARMUP.
      38                 :            :  */
      39                 :            : void SetRPCWarmupStatus(const std::string& newStatus);
      40                 :            : /* Mark warmup as done.  RPC calls will be processed from now on.  */
      41                 :            : void SetRPCWarmupFinished();
      42                 :            : 
      43                 :            : /* returns the current warmup state.  */
      44                 :            : bool RPCIsInWarmup(std::string *outStatus);
      45                 :            : 
      46                 :            : /** Opaque base class for timers returned by NewTimerFunc.
      47                 :            :  * This provides no methods at the moment, but makes sure that delete
      48                 :            :  * cleans up the whole state.
      49                 :            :  */
      50                 :          0 : class RPCTimerBase
      51                 :            : {
      52                 :            : public:
      53                 :          0 :     virtual ~RPCTimerBase() {}
      54                 :            : };
      55                 :            : 
      56                 :            : /**
      57                 :            :  * RPC timer "driver".
      58                 :            :  */
      59                 :          0 : class RPCTimerInterface
      60                 :            : {
      61                 :            : public:
      62                 :          0 :     virtual ~RPCTimerInterface() {}
      63                 :            :     /** Implementation name */
      64                 :            :     virtual const char *Name() = 0;
      65                 :            :     /** Factory function for timers.
      66                 :            :      * RPC will call the function to create a timer that will call func in *millis* milliseconds.
      67                 :            :      * @note As the RPC mechanism is backend-neutral, it can use different implementations of timers.
      68                 :            :      * This is needed to cope with the case in which there is no HTTP server, but
      69                 :            :      * only GUI RPC console, and to break the dependency of pcserver on httprpc.
      70                 :            :      */
      71                 :            :     virtual RPCTimerBase* NewTimer(std::function<void()>& func, int64_t millis) = 0;
      72                 :            : };
      73                 :            : 
      74                 :            : /** Set the factory function for timers */
      75                 :            : void RPCSetTimerInterface(RPCTimerInterface *iface);
      76                 :            : /** Set the factory function for timer, but only, if unset */
      77                 :            : void RPCSetTimerInterfaceIfUnset(RPCTimerInterface *iface);
      78                 :            : /** Unset factory function for timers */
      79                 :            : void RPCUnsetTimerInterface(RPCTimerInterface *iface);
      80                 :            : 
      81                 :            : /**
      82                 :            :  * Run func nSeconds from now.
      83                 :            :  * Overrides previous timer <name> (if any).
      84                 :            :  */
      85                 :            : void RPCRunLater(const std::string& name, std::function<void()> func, int64_t nSeconds);
      86                 :            : 
      87                 :            : typedef RPCHelpMan (*RpcMethodFnType)();
      88                 :            : 
      89 [ #  # ][ #  # ]:          0 : class CRPCCommand
      90                 :            : {
      91                 :            : public:
      92                 :            :     //! RPC method handler reading request and assigning result. Should return
      93                 :            :     //! true if request is fully handled, false if it should be passed on to
      94                 :            :     //! subsequent handlers.
      95                 :            :     using Actor = std::function<bool(const JSONRPCRequest& request, UniValue& result, bool last_handler)>;
      96                 :            : 
      97                 :            :     //! Constructor taking Actor callback supporting multiple handlers.
      98                 :        110 :     CRPCCommand(std::string category, std::string name, Actor actor, std::vector<std::pair<std::string, bool>> args, intptr_t unique_id)
      99                 :        110 :         : category(std::move(category)), name(std::move(name)), actor(std::move(actor)), argNames(std::move(args)),
     100                 :        110 :           unique_id(unique_id)
     101                 :            :     {
     102                 :        110 :     }
     103                 :            : 
     104                 :            :     //! Simplified constructor taking plain RpcMethodFnType function pointer.
     105                 :        110 :     CRPCCommand(std::string category, RpcMethodFnType fn)
     106         [ -  + ]:        110 :         : CRPCCommand(
     107                 :        110 :               category,
     108 [ +  - ][ +  - ]:        110 :               fn().m_name,
     109         [ #  # ]:        110 :               [fn](const JSONRPCRequest& request, UniValue& result, bool) { result = fn().HandleRequest(request); return true; },
     110 [ +  - ][ +  - ]:        110 :               fn().GetArgNames(),
     111                 :        110 :               intptr_t(fn))
     112                 :            :     {
     113                 :        110 :     }
     114                 :            : 
     115                 :            :     std::string category;
     116                 :            :     std::string name;
     117                 :            :     Actor actor;
     118                 :            :     //! List of method arguments and whether they are named-only. Incoming RPC
     119                 :            :     //! requests contain a "params" field that can either be an array containing
     120                 :            :     //! unnamed arguments or an object containing named arguments. The
     121                 :            :     //! "argNames" vector is used in the latter case to transform the params
     122                 :            :     //! object into an array. Each argument in "argNames" gets mapped to a
     123                 :            :     //! unique position in the array, based on the order it is listed, unless
     124                 :            :     //! the argument is a named-only argument with argNames[x].second set to
     125                 :            :     //! true. Named-only arguments are combined into a JSON object that is
     126                 :            :     //! appended after other arguments, see transformNamedArguments for details.
     127                 :            :     std::vector<std::pair<std::string, bool>> argNames;
     128                 :            :     intptr_t unique_id;
     129                 :            : };
     130                 :            : 
     131                 :            : /**
     132                 :            :  * RPC command dispatcher.
     133                 :            :  */
     134                 :          0 : class CRPCTable
     135                 :            : {
     136                 :            : private:
     137                 :            :     std::map<std::string, std::vector<const CRPCCommand*>> mapCommands;
     138                 :            : public:
     139                 :            :     CRPCTable();
     140                 :            :     std::string help(const std::string& name, const JSONRPCRequest& helpreq) const;
     141                 :            : 
     142                 :            :     /**
     143                 :            :      * Execute a method.
     144                 :            :      * @param request The JSONRPCRequest to execute
     145                 :            :      * @returns Result of the call.
     146                 :            :      * @throws an exception (UniValue) when an error happens.
     147                 :            :      */
     148                 :            :     UniValue execute(const JSONRPCRequest &request) const;
     149                 :            : 
     150                 :            :     /**
     151                 :            :     * Returns a list of registered commands
     152                 :            :     * @returns List of registered commands.
     153                 :            :     */
     154                 :            :     std::vector<std::string> listCommands() const;
     155                 :            : 
     156                 :            :     /**
     157                 :            :      * Return all named arguments that need to be converted by the client from string to another JSON type
     158                 :            :      */
     159                 :            :     UniValue dumpArgMap(const JSONRPCRequest& request) const;
     160                 :            : 
     161                 :            :     /**
     162                 :            :      * Appends a CRPCCommand to the dispatch table.
     163                 :            :      *
     164                 :            :      * Precondition: RPC server is not running
     165                 :            :      *
     166                 :            :      * Commands with different method names but the same unique_id will
     167                 :            :      * be considered aliases, and only the first registered method name will
     168                 :            :      * show up in the help text command listing. Aliased commands do not have
     169                 :            :      * to have the same behavior. Server and client code can distinguish
     170                 :            :      * between calls based on method name, and aliased commands can also
     171                 :            :      * register different names, types, and numbers of parameters.
     172                 :            :      */
     173                 :            :     void appendCommand(const std::string& name, const CRPCCommand* pcmd);
     174                 :            :     bool removeCommand(const std::string& name, const CRPCCommand* pcmd);
     175                 :            : };
     176                 :            : 
     177                 :            : bool IsDeprecatedRPCEnabled(const std::string& method);
     178                 :            : 
     179                 :            : extern CRPCTable tableRPC;
     180                 :            : 
     181                 :            : void StartRPC();
     182                 :            : void InterruptRPC();
     183                 :            : void StopRPC();
     184                 :            : std::string JSONRPCExecBatch(const JSONRPCRequest& jreq, const UniValue& vReq);
     185                 :            : 
     186                 :            : // Retrieves any serialization flags requested in command line argument
     187                 :            : int RPCSerializationFlags();
     188                 :            : 
     189                 :            : #endif // BITCOIN_RPC_SERVER_H

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