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 #include "dictionary.h"
  15
  16 #define DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS 60
  17 extern int web_client_timeout;
  18 extern int web_enable_gzip;
  19
  20 #ifndef NETDATA_WEB_CLIENT_H
  21 #define NETDATA_WEB_CLIENT_H 1
  22
  23 #define WEB_CLIENT_MODE_NORMAL          0
  24 #define WEB_CLIENT_MODE_FILECOPY        1
  25 #define WEB_CLIENT_MODE_OPTIONS         2
  26
  27 #define URL_MAX 8192
  28 #define ZLIB_CHUNK      16384
  29 #define HTTP_RESPONSE_HEADER_SIZE 4096
  30 #define COOKIE_MAX 1024
  31 #define ORIGIN_MAX 1024
  32
  33 struct response {
  34         BUFFER *header;                                 // our response header
  35         BUFFER *header_output;                  // internal use
  36         BUFFER *data;                                   // our response data buffer
  37
  38         int code;                                               // the HTTP response code
  39
  40         size_t rlen;                                    // if non-zero, the excepted size of ifd (input)
  41         size_t sent;                                    // current data length sent to output
  42
  43         int zoutput;                                    // if set to 1, web_client_send() will send compressed data
  44 #ifdef NETDATA_WITH_ZLIB
  45         z_stream zstream;                               // zlib stream for sending compressed output to client
  46         Bytef zbuffer[ZLIB_CHUNK];              // temporary buffer for storing compressed output
  47         long zsent;                                             // the compressed bytes we have sent to the client
  48         long zhave;                                             // the compressed bytes that we have to send
  49         int zinitialized;
  50 #endif
  51
  52 };
  53
  54 struct web_client {
  55         unsigned long long id;
  56
  57         char client_ip[NI_MAXHOST+1];
  58         char client_port[NI_MAXSERV+1];
  59
  60         char last_url[URL_MAX+1];
  61
  62         struct timeval tv_in, tv_ready;
  63
  64         char cookie[COOKIE_MAX+1];
  65         char origin[ORIGIN_MAX+1];
  66
  67         int mode;
  68         int keepalive;
  69         int enable_gzip;
  70         char *decoded_url;
  71
  72         struct sockaddr_storage clientaddr;
  73
  74         pthread_t thread;                               // the thread servicing this client
  75         int obsolete;                                   // if set to 1, the listener will remove this client
  76
  77         int ifd;
  78         int ofd;
  79
  80         struct response response;
  81
  82         int wait_receive;
  83         int wait_send;
  84
  85         struct web_client *prev;
  86         struct web_client *next;
  87 };
  88
  89 extern struct web_client *web_clients;
  90
  91 extern uid_t web_files_uid(void);
  92 extern uid_t web_files_gid(void);
  93
  94 extern struct web_client *web_client_create(int listener);
  95 extern struct web_client *web_client_free(struct web_client *w);
  96
  97 extern void *web_client_main(void *ptr);
  98
  99 #endif