src/web_client.h

   1
   2 #ifdef NETDATA_WITH_ZLIB
   3 #include <zlib.h>
   4 #endif
   5
   6 #include <sys/time.h>
   7 #include <string.h>
   8 #include <sys/socket.h>
   9 #include <netinet/in.h>
  10 #include <arpa/inet.h>
  11 #include <netdb.h>
  12
  13 #include "web_buffer.h"
  14
  15 #define DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS 60
  16 extern int web_client_timeout;
  17 extern int web_enable_gzip;
  18
  19 #ifndef NETDATA_WEB_CLIENT_H
  20 #define NETDATA_WEB_CLIENT_H 1
  21
  22 #define WEB_CLIENT_MODE_NORMAL          0
  23 #define WEB_CLIENT_MODE_FILECOPY        1
  24 #define WEB_CLIENT_MODE_OPTIONS         2
  25
  26 #define URL_MAX 8192
  27 #define ZLIB_CHUNK      16384
  28 #define HTTP_RESPONSE_HEADER_SIZE 4096
  29
  30 struct response {
  31         BUFFER *header;                                 // our response header
  32         BUFFER *header_output;                  // internal use
  33         BUFFER *data;                                   // our response data buffer
  34
  35         int code;                                               // the HTTP response code
  36
  37         size_t rlen;                                    // if non-zero, the excepted size of ifd (input)
  38         size_t sent;                                    // current data length sent to output
  39
  40         int zoutput;                                    // if set to 1, web_client_send() will send compressed data
  41 #ifdef NETDATA_WITH_ZLIB
  42         z_stream zstream;                               // zlib stream for sending compressed output to client
  43         Bytef zbuffer[ZLIB_CHUNK];              // temporary buffer for storing compressed output
  44         long zsent;                                             // the compressed bytes we have sent to the client
  45         long zhave;                                             // the compressed bytes that we have to send
  46         int zinitialized;
  47 #endif
  48
  49 };
  50
  51 struct web_client {
  52         unsigned long long id;
  53
  54         char client_ip[NI_MAXHOST+1];
  55         char client_port[NI_MAXSERV+1];
  56
  57         char last_url[URL_MAX+1];
  58
  59         struct timeval tv_in, tv_ready;
  60
  61         int mode;
  62         int keepalive;
  63
  64         struct sockaddr_storage clientaddr;
  65
  66         pthread_t thread;                               // the thread servicing this client
  67         int obsolete;                                   // if set to 1, the listener will remove this client
  68
  69         int ifd;
  70         int ofd;
  71
  72         struct response response;
  73
  74         int wait_receive;
  75         int wait_send;
  76
  77         struct web_client *prev;
  78         struct web_client *next;
  79 };
  80
  81 extern struct web_client *web_clients;
  82
  83 extern uid_t web_files_uid(void);
  84 extern uid_t web_files_gid(void);
  85
  86 extern struct web_client *web_client_create(int listener);
  87 extern struct web_client *web_client_free(struct web_client *w);
  88
  89 extern void *web_client_main(void *ptr);
  90
  91 #endif