src/plugins/http/http.h

   1 /*
   2  * Copyright (c) 2022 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef SRC_PLUGINS_HTTP_HTTP_H_
  17 #define SRC_PLUGINS_HTTP_HTTP_H_
  18
  19 #include <vnet/plugin/plugin.h>
  20 #include <vpp/app/version.h>
  21
  22 #include <vppinfra/time_range.h>
  23
  24 #include <vnet/session/application_interface.h>
  25 #include <vnet/session/application.h>
  26 #include <http/http_buffer.h>
  27
  28 #define HTTP_DEBUG 0
  29
  30 #if HTTP_DEBUG
  31 #define HTTP_DBG(_lvl, _fmt, _args...)                                        \
  32   if (_lvl <= HTTP_DEBUG)                                                     \
  33   clib_warning (_fmt, ##_args)
  34 #else
  35 #define HTTP_DBG(_lvl, _fmt, _args...)
  36 #endif
  37
  38 typedef struct http_conn_id_
  39 {
  40   union
  41   {
  42     session_handle_t app_session_handle;
  43     u32 parent_app_api_ctx;
  44   };
  45   session_handle_t tc_session_handle;
  46   u32 parent_app_wrk_index;
  47 } http_conn_id_t;
  48
  49 STATIC_ASSERT (sizeof (http_conn_id_t) <= TRANSPORT_CONN_ID_LEN,
  50                "ctx id must be less than TRANSPORT_CONN_ID_LEN");
  51
  52 typedef enum http_state_
  53 {
  54   HTTP_CONN_STATE_LISTEN,
  55   HTTP_CONN_STATE_CONNECTING,
  56   HTTP_CONN_STATE_ESTABLISHED,
  57   HTTP_CONN_STATE_TRANSPORT_CLOSED,
  58   HTTP_CONN_STATE_APP_CLOSED,
  59   HTTP_CONN_STATE_CLOSED
  60 } http_conn_state_t;
  61
  62 typedef enum http_req_state_
  63 {
  64   HTTP_REQ_STATE_WAIT_METHOD,
  65   HTTP_REQ_STATE_WAIT_APP,
  66   HTTP_REQ_STATE_SEND_MORE_DATA,
  67   HTTP_REQ_N_STATES,
  68 } http_req_state_t;
  69
  70 typedef enum http_req_method_
  71 {
  72   HTTP_REQ_GET = 0,
  73   HTTP_REQ_POST,
  74 } http_req_method_t;
  75
  76 typedef enum http_msg_type_
  77 {
  78   HTTP_MSG_REQUEST,
  79   HTTP_MSG_REPLY
  80 } http_msg_type_t;
  81
  82 #define foreach_http_content_type                                             \
  83   _ (TEXT_HTML, "text/html")                                                  \
  84   _ (TEXT_CSS, "text/css")                                                    \
  85   _ (TEXT_JS, "text/javascript")                                              \
  86   _ (TEXT_JSON, "application/json")
  87
  88 typedef enum http_content_type_
  89 {
  90 #define _(s, str) HTTP_CONTENT_##s,
  91   foreach_http_content_type
  92 #undef _
  93 } http_content_type_t;
  94
  95 #define foreach_http_status_code                                              \
  96   _ (200, OK, "200 OK")                                                       \
  97   _ (400, BAD_REQUEST, "400 Bad Request")                                     \
  98   _ (404, NOT_FOUND, "404 Not Found")                                         \
  99   _ (405, METHOD_NOT_ALLOWED, "405 Method Not Allowed")                       \
 100   _ (500, INTERNAL_ERROR, "500 Internal Server Error")
 101
 102 typedef enum http_status_code_
 103 {
 104 #define _(c, s, str) HTTP_STATUS_##s,
 105   foreach_http_status_code
 106 #undef _
 107     HTTP_N_STATUS
 108 } http_status_code_t;
 109
 110 typedef enum http_msg_data_type_
 111 {
 112   HTTP_MSG_DATA_INLINE,
 113   HTTP_MSG_DATA_PTR
 114 } http_msg_data_type_t;
 115
 116 typedef struct http_msg_data_
 117 {
 118   http_msg_data_type_t type;
 119   u64 len;
 120   u8 data[0];
 121 } http_msg_data_t;
 122
 123 typedef struct http_msg_
 124 {
 125   http_msg_type_t type;
 126   union
 127   {
 128     http_req_method_t method_type;
 129     http_status_code_t code;
 130   };
 131   http_content_type_t content_type;
 132   http_msg_data_t data;
 133 } http_msg_t;
 134
 135 typedef struct http_tc_
 136 {
 137   union
 138   {
 139     transport_connection_t connection;
 140     http_conn_id_t c_http_conn_id;
 141   };
 142 #define h_tc_session_handle c_http_conn_id.tc_session_handle
 143 #define h_pa_wrk_index      c_http_conn_id.parent_app_wrk_index
 144 #define h_pa_session_handle c_http_conn_id.app_session_handle
 145 #define h_hc_index          connection.c_index
 146
 147   http_conn_state_t state;
 148   u32 timer_handle;
 149
 150   /*
 151    * Current request
 152    */
 153   http_req_state_t req_state;
 154   http_req_method_t method;
 155   u8 *rx_buf;
 156   u32 rx_buf_offset;
 157   http_buffer_t tx_buf;
 158 } http_conn_t;
 159
 160 typedef struct http_worker_
 161 {
 162   http_conn_t *conn_pool;
 163 } http_worker_t;
 164
 165 typedef struct http_main_
 166 {
 167   http_worker_t *wrk;
 168   http_conn_t *listener_pool;
 169   u32 app_index;
 170
 171   clib_timebase_t timebase;
 172
 173   /*
 174    * Runtime config
 175    */
 176   u8 debug_level;
 177
 178   /*
 179    * Config
 180    */
 181   u64 first_seg_size;
 182   u64 add_seg_size;
 183   u32 fifo_size;
 184 } http_main_t;
 185
 186 #endif /* SRC_PLUGINS_HTTP_HTTP_H_ */
 187
 188 /*
 189  * fd.io coding-style-patch-verification: ON
 190  *
 191  * Local Variables:
 192  * eval: (c-set-style "gnu")
 193  * End:
 194  */