httpdclient.h

   1 #ifndef HTTPDCLIENT_H
   2 #define HTTPDCLIENT_H
   3
   4 // Libmicrohttpd: https://www.gnu.org/software/libmicrohttpd/
   5 #include <sys/types.h>
   6 #include <sys/select.h>
   7 #include <sys/socket.h>
   8 #include <microhttpd.h>
   9
  10 #include <string>
  11 #include <map>
  12
  13 // Log docs: https://github.com/gabime/spdlog
  14 #include <spdlog/spdlog.h>
  15 namespace spd = spdlog;
  16
  17 #include "vdrclient.h"
  18
  19 class HTTPDClient
  20 {
  21   public:
  22     static bool StartServer(std::string docRoot, int port, const char* configDir);
  23     static void StopServer();
  24
  25     // static callbacks from libmicrohttpd
  26     static MHD_Result uri_key_value(void *cls, enum MHD_ValueKind kind, const char* key, const char* value);
  27     static MHD_Result iterate_post(void *clientIdentifier, enum MHD_ValueKind kind, const char *key,
  28                                    const char *filename, const char* content_type,
  29                                    const char *transfer_encoding, const char *data, uint64_t off, size_t size);
  30     static void request_completed(void *cls, struct MHD_Connection *mhd_connection,
  31                               void **unused, enum MHD_RequestTerminationCode toe);
  32     static void connection_notify(void *cls, struct MHD_Connection* mhd_connection,
  33                        void **socket_context, enum MHD_ConnectionNotificationCode toe);
  34     static MHD_Result handle_connection(void *cls, struct MHD_Connection *connection,
  35                                         const char *url, const char *method,
  36                                         const char *version, const char *upload_data,
  37                                         long unsigned int* upload_data_size, void **con_cls);
  38
  39   private:
  40     static std::shared_ptr<spd::logger> logger;
  41     static struct MHD_Daemon* httpdserver;
  42     static std::string docRoot;
  43     static std::string configDir;
  44
  45     HTTPDClient(struct MHD_Connection*, const std::string& configDir);
  46     ~HTTPDClient();
  47
  48     MHD_Result handleConnection(const char *url, const char *method,
  49                                 const char *version, const char *upload_data,
  50                                 size_t *upload_data_size, void **con_cls);
  51     MHD_Result processGET();
  52     MHD_Result processPOST();
  53
  54     std::map<std::string, std::string> getVars;
  55     std::map<std::string, std::string> postFields;
  56     struct MHD_PostProcessor* postprocessor;
  57     char* url;
  58     struct MHD_Connection* mhd_connection;
  59
  60     VDRClient vdrclient;
  61
  62     void addGetVar(const char* key, const char* value);
  63     void addPostField(const char* key, const char* value, int valueLength);
  64     void requestComplete();
  65     MHD_Result sendStockResponse(int code);
  66 };
  67
  68 #endif