LCOV - code coverage report
Current view: top level - src/rpc - request.cpp (source / functions) Hit Total Coverage
Test: fuzz_coverage.info Lines: 1 110 0.9 %
Date: 2023-11-12 01:39:15 Functions: 0 11 0.0 %
Branches: 1 268 0.4 %

           Branch data     Line data    Source code
       1                 :            : // Copyright (c) 2010 Satoshi Nakamoto
       2                 :            : // Copyright (c) 2009-2022 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                 :            : #include <rpc/request.h>
       7                 :            : 
       8                 :            : #include <util/fs.h>
       9                 :            : 
      10                 :            : #include <common/args.h>
      11                 :            : #include <logging.h>
      12                 :            : #include <random.h>
      13                 :            : #include <rpc/protocol.h>
      14                 :            : #include <util/fs_helpers.h>
      15                 :            : #include <util/strencodings.h>
      16                 :            : 
      17                 :            : #include <fstream>
      18                 :            : #include <stdexcept>
      19                 :            : #include <string>
      20                 :            : #include <vector>
      21                 :            : 
      22                 :            : /**
      23                 :            :  * JSON-RPC protocol.  Bitcoin speaks version 1.0 for maximum compatibility,
      24                 :            :  * but uses JSON-RPC 1.1/2.0 standards for parts of the 1.0 standard that were
      25                 :            :  * unspecified (HTTP errors and contents of 'error').
      26                 :            :  *
      27                 :            :  * 1.0 spec: http://json-rpc.org/wiki/specification
      28                 :            :  * 1.2 spec: http://jsonrpc.org/historical/json-rpc-over-http.html
      29                 :            :  */
      30                 :            : 
      31                 :          0 : UniValue JSONRPCRequestObj(const std::string& strMethod, const UniValue& params, const UniValue& id)
      32                 :            : {
      33         [ #  # ]:          0 :     UniValue request(UniValue::VOBJ);
      34 [ #  # ][ #  # ]:          0 :     request.pushKV("method", strMethod);
                 [ #  # ]
      35 [ #  # ][ #  # ]:          0 :     request.pushKV("params", params);
                 [ #  # ]
      36 [ #  # ][ #  # ]:          0 :     request.pushKV("id", id);
                 [ #  # ]
      37                 :          0 :     return request;
      38         [ #  # ]:          0 : }
      39                 :            : 
      40                 :          0 : UniValue JSONRPCReplyObj(const UniValue& result, const UniValue& error, const UniValue& id)
      41                 :            : {
      42         [ #  # ]:          0 :     UniValue reply(UniValue::VOBJ);
      43 [ #  # ][ #  # ]:          0 :     if (!error.isNull())
      44 [ #  # ][ #  # ]:          0 :         reply.pushKV("result", NullUniValue);
                 [ #  # ]
      45                 :            :     else
      46 [ #  # ][ #  # ]:          0 :         reply.pushKV("result", result);
                 [ #  # ]
      47 [ #  # ][ #  # ]:          0 :     reply.pushKV("error", error);
                 [ #  # ]
      48 [ #  # ][ #  # ]:          0 :     reply.pushKV("id", id);
                 [ #  # ]
      49                 :          0 :     return reply;
      50         [ #  # ]:          0 : }
      51                 :            : 
      52                 :          0 : std::string JSONRPCReply(const UniValue& result, const UniValue& error, const UniValue& id)
      53                 :            : {
      54                 :          0 :     UniValue reply = JSONRPCReplyObj(result, error, id);
      55 [ #  # ][ #  # ]:          0 :     return reply.write() + "\n";
      56                 :          0 : }
      57                 :            : 
      58                 :          0 : UniValue JSONRPCError(int code, const std::string& message)
      59                 :            : {
      60         [ #  # ]:          0 :     UniValue error(UniValue::VOBJ);
      61 [ #  # ][ #  # ]:          0 :     error.pushKV("code", code);
                 [ #  # ]
      62 [ #  # ][ #  # ]:          0 :     error.pushKV("message", message);
                 [ #  # ]
      63                 :          0 :     return error;
      64         [ #  # ]:          0 : }
      65                 :            : 
      66                 :            : /** Username used when cookie authentication is in use (arbitrary, only for
      67                 :            :  * recognizability in debugging/logging purposes)
      68                 :            :  */
      69         [ +  - ]:          2 : static const std::string COOKIEAUTH_USER = "__cookie__";
      70                 :            : /** Default name for auth cookie file */
      71                 :            : static const char* const COOKIEAUTH_FILE = ".cookie";
      72                 :            : 
      73                 :            : /** Get name of RPC authentication cookie file */
      74                 :          0 : static fs::path GetAuthCookieFile(bool temp=false)
      75                 :            : {
      76 [ #  # ][ #  # ]:          0 :     fs::path arg = gArgs.GetPathArg("-rpccookiefile", COOKIEAUTH_FILE);
                 [ #  # ]
      77         [ #  # ]:          0 :     if (temp) {
      78         [ #  # ]:          0 :         arg += ".tmp";
      79                 :          0 :     }
      80         [ #  # ]:          0 :     return AbsPathForConfigVal(gArgs, arg);
      81                 :          0 : }
      82                 :            : 
      83                 :          0 : bool GenerateAuthCookie(std::string *cookie_out)
      84                 :            : {
      85                 :          0 :     const size_t COOKIE_SIZE = 32;
      86                 :            :     unsigned char rand_pwd[COOKIE_SIZE];
      87                 :          0 :     GetRandBytes(rand_pwd);
      88 [ #  # ][ #  # ]:          0 :     std::string cookie = COOKIEAUTH_USER + ":" + HexStr(rand_pwd);
      89                 :            : 
      90                 :            :     /** the umask determines what permissions are used to create this file -
      91                 :            :      * these are set to 0077 in common/system.cpp.
      92                 :            :      */
      93         [ #  # ]:          0 :     std::ofstream file;
      94         [ #  # ]:          0 :     fs::path filepath_tmp = GetAuthCookieFile(true);
      95         [ #  # ]:          0 :     file.open(filepath_tmp);
      96 [ #  # ][ #  # ]:          0 :     if (!file.is_open()) {
      97 [ #  # ][ #  # ]:          0 :         LogPrintf("Unable to open cookie authentication file %s for writing\n", fs::PathToString(filepath_tmp));
         [ #  # ][ #  # ]
      98                 :          0 :         return false;
      99                 :            :     }
     100         [ #  # ]:          0 :     file << cookie;
     101         [ #  # ]:          0 :     file.close();
     102                 :            : 
     103         [ #  # ]:          0 :     fs::path filepath = GetAuthCookieFile(false);
     104 [ #  # ][ #  # ]:          0 :     if (!RenameOver(filepath_tmp, filepath)) {
         [ #  # ][ #  # ]
     105 [ #  # ][ #  # ]:          0 :         LogPrintf("Unable to rename cookie authentication file %s to %s\n", fs::PathToString(filepath_tmp), fs::PathToString(filepath));
         [ #  # ][ #  # ]
                 [ #  # ]
     106                 :          0 :         return false;
     107                 :            :     }
     108 [ #  # ][ #  # ]:          0 :     LogPrintf("Generated RPC authentication cookie %s\n", fs::PathToString(filepath));
         [ #  # ][ #  # ]
     109                 :            : 
     110         [ #  # ]:          0 :     if (cookie_out)
     111         [ #  # ]:          0 :         *cookie_out = cookie;
     112                 :          0 :     return true;
     113                 :          0 : }
     114                 :            : 
     115                 :          0 : bool GetAuthCookie(std::string *cookie_out)
     116                 :            : {
     117                 :          0 :     std::ifstream file;
     118                 :          0 :     std::string cookie;
     119         [ #  # ]:          0 :     fs::path filepath = GetAuthCookieFile();
     120         [ #  # ]:          0 :     file.open(filepath);
     121 [ #  # ][ #  # ]:          0 :     if (!file.is_open())
     122                 :          0 :         return false;
     123         [ #  # ]:          0 :     std::getline(file, cookie);
     124         [ #  # ]:          0 :     file.close();
     125                 :            : 
     126         [ #  # ]:          0 :     if (cookie_out)
     127         [ #  # ]:          0 :         *cookie_out = cookie;
     128                 :          0 :     return true;
     129                 :          0 : }
     130                 :            : 
     131                 :          0 : void DeleteAuthCookie()
     132                 :            : {
     133                 :            :     try {
     134 [ #  # ][ #  # ]:          0 :         fs::remove(GetAuthCookieFile());
     135         [ #  # ]:          0 :     } catch (const fs::filesystem_error& e) {
     136 [ #  # ][ #  # ]:          0 :         LogPrintf("%s: Unable to remove random auth cookie file: %s\n", __func__, fsbridge::get_filesystem_error_message(e));
         [ #  # ][ #  # ]
     137         [ #  # ]:          0 :     }
     138                 :          0 : }
     139                 :            : 
     140                 :          0 : std::vector<UniValue> JSONRPCProcessBatchReply(const UniValue& in)
     141                 :            : {
     142         [ #  # ]:          0 :     if (!in.isArray()) {
     143         [ #  # ]:          0 :         throw std::runtime_error("Batch must be an array");
     144                 :            :     }
     145                 :          0 :     const size_t num {in.size()};
     146         [ #  # ]:          0 :     std::vector<UniValue> batch(num);
     147 [ #  # ][ #  # ]:          0 :     for (const UniValue& rec : in.getValues()) {
     148 [ #  # ][ #  # ]:          0 :         if (!rec.isObject()) {
     149         [ #  # ]:          0 :             throw std::runtime_error("Batch member must be an object");
     150                 :            :         }
     151 [ #  # ][ #  # ]:          0 :         size_t id = rec["id"].getInt<int>();
                 [ #  # ]
     152         [ #  # ]:          0 :         if (id >= num) {
     153         [ #  # ]:          0 :             throw std::runtime_error("Batch member id is larger than batch size");
     154                 :            :         }
     155         [ #  # ]:          0 :         batch[id] = rec;
     156                 :            :     }
     157                 :          0 :     return batch;
     158         [ #  # ]:          0 : }
     159                 :            : 
     160                 :          0 : void JSONRPCRequest::parse(const UniValue& valRequest)
     161                 :            : {
     162                 :            :     // Parse request
     163         [ #  # ]:          0 :     if (!valRequest.isObject())
     164 [ #  # ][ #  # ]:          0 :         throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
                 [ #  # ]
     165                 :          0 :     const UniValue& request = valRequest.get_obj();
     166                 :            : 
     167                 :            :     // Parse id now so errors from here on will have the id
     168                 :          0 :     id = request.find_value("id");
     169                 :            : 
     170                 :            :     // Parse method
     171                 :          0 :     const UniValue& valMethod{request.find_value("method")};
     172         [ #  # ]:          0 :     if (valMethod.isNull())
     173 [ #  # ][ #  # ]:          0 :         throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
                 [ #  # ]
     174         [ #  # ]:          0 :     if (!valMethod.isStr())
     175 [ #  # ][ #  # ]:          0 :         throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string");
                 [ #  # ]
     176                 :          0 :     strMethod = valMethod.get_str();
     177         [ #  # ]:          0 :     if (fLogIPs)
     178 [ #  # ][ #  # ]:          0 :         LogPrint(BCLog::RPC, "ThreadRPCServer method=%s user=%s peeraddr=%s\n", SanitizeString(strMethod),
         [ #  # ][ #  # ]
                 [ #  # ]
     179                 :            :             this->authUser, this->peerAddr);
     180                 :            :     else
     181 [ #  # ][ #  # ]:          0 :         LogPrint(BCLog::RPC, "ThreadRPCServer method=%s user=%s\n", SanitizeString(strMethod), this->authUser);
         [ #  # ][ #  # ]
                 [ #  # ]
     182                 :            : 
     183                 :            :     // Parse params
     184                 :          0 :     const UniValue& valParams{request.find_value("params")};
     185 [ #  # ][ #  # ]:          0 :     if (valParams.isArray() || valParams.isObject())
     186                 :          0 :         params = valParams;
     187         [ #  # ]:          0 :     else if (valParams.isNull())
     188         [ #  # ]:          0 :         params = UniValue(UniValue::VARR);
     189                 :            :     else
     190 [ #  # ][ #  # ]:          0 :         throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array or object");
                 [ #  # ]
     191                 :          0 : }

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