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| 1 | +/***************************************************************************/ /** |
| 2 | + * @file |
| 3 | + * @brief sl_si91x_http_client_callback_framework.c |
| 4 | + ******************************************************************************* |
| 5 | + * # License |
| 6 | + * <b>Copyright 2019 Silicon Laboratories Inc. www.silabs.com</b> |
| 7 | + ******************************************************************************* |
| 8 | + * |
| 9 | + * SPDX-License-Identifier: Zlib |
| 10 | + * |
| 11 | + * The licensor of this software is Silicon Laboratories Inc. |
| 12 | + * |
| 13 | + * This software is provided 'as-is', without any express or implied |
| 14 | + * warranty. In no event will the authors be held liable for any damages |
| 15 | + * arising from the use of this software. |
| 16 | + * |
| 17 | + * Permission is granted to anyone to use this software for any purpose, |
| 18 | + * including commercial applications, and to alter it and redistribute it |
| 19 | + * freely, subject to the following restrictions: |
| 20 | + * |
| 21 | + * 1. The origin of this software must not be misrepresented; you must not |
| 22 | + * claim that you wrote the original software. If you use this software |
| 23 | + * in a product, an acknowledgment in the product documentation would be |
| 24 | + * appreciated but is not required. |
| 25 | + * 2. Altered source versions must be plainly marked as such, and must not be |
| 26 | + * misrepresented as being the original software. |
| 27 | + * 3. This notice may not be removed or altered from any source distribution. |
| 28 | + * |
| 29 | + ******************************************************************************/ |
| 30 | + |
| 31 | +#include "sl_si91x_http_client_callback_framework.h" |
| 32 | +#include "sl_constants.h" |
| 33 | +#include <string.h> |
| 34 | + |
| 35 | +/****************************************************** |
| 36 | + * Constants |
| 37 | + ******************************************************/ |
| 38 | +//! HTTP OFFSET |
| 39 | +#define SLI_SI91X_HTTP_OFFSET 12 |
| 40 | + |
| 41 | +//! HTTP PUT OFFSET |
| 42 | +#define SLI_SI91X_HTTP_PUT_OFFSET 16 |
| 43 | + |
| 44 | +/****************************************************** |
| 45 | + * Structures |
| 46 | + ******************************************************/ |
| 47 | +/** |
| 48 | + * Callback entry structure for sl_http_client events |
| 49 | + */ |
| 50 | +typedef struct { |
| 51 | + sl_http_client_t client_handle; ///< HTTP client handle |
| 52 | + sl_http_client_event_handler_t callback_function; ///< User provided callback function pointer |
| 53 | +} sl_http_client_callback_entry_t; |
| 54 | + |
| 55 | +/****************************************************** |
| 56 | + * Global Variables |
| 57 | + ******************************************************/ |
| 58 | +static sl_http_client_callback_entry_t registered_callback[SL_HTTP_CLIENT_MAX_EVENT] = { 0 }; |
| 59 | + |
| 60 | +/****************************************************** |
| 61 | + * Function Declarations |
| 62 | + ******************************************************/ |
| 63 | +static sl_http_client_callback_entry_t *sli_get_http_client_callback_entry(sl_http_client_event_t event); |
| 64 | +static sl_status_t sl_si91x_http_client_put_delete(void); |
| 65 | + |
| 66 | +/****************************************************** |
| 67 | + * Function Definitions |
| 68 | + ******************************************************/ |
| 69 | +sl_status_t sli_http_client_register_callback(sl_http_client_event_t event, |
| 70 | + sl_http_client_t client_handle, |
| 71 | + sl_http_client_event_handler_t function) |
| 72 | +{ |
| 73 | + // Get the callback entry associated with the specified event |
| 74 | + sl_http_client_callback_entry_t *entry = sli_get_http_client_callback_entry(event); |
| 75 | + |
| 76 | + // check if the entry is valid |
| 77 | + if (entry != NULL) { |
| 78 | + entry->client_handle = client_handle; |
| 79 | + entry->callback_function = function; |
| 80 | + return SL_STATUS_OK; |
| 81 | + } |
| 82 | + return SL_STATUS_FAIL; |
| 83 | +} |
| 84 | + |
| 85 | +static sl_status_t sl_si91x_http_client_put_delete(void) |
| 86 | +{ |
| 87 | + sl_status_t status = SL_STATUS_OK; |
| 88 | + |
| 89 | + sl_si91x_http_client_put_request_t *request = |
| 90 | + (sl_si91x_http_client_put_request_t *)malloc(sizeof(sl_si91x_http_client_put_request_t)); |
| 91 | + if (request == NULL) { |
| 92 | + return SL_STATUS_ALLOCATION_FAILED; |
| 93 | + } |
| 94 | + memset(request, 0, sizeof(sl_si91x_http_client_put_request_t)); |
| 95 | + request->command_type = SLI_SI91X_HTTP_CLIENT_PUT_DELETE; |
| 96 | + uint16_t packet_len = sizeof(sl_si91x_http_client_put_request_t) - SLI_SI91X_HTTP_CLIENT_PUT_MAX_BUFFER_LENGTH; |
| 97 | + |
| 98 | + status = sli_si91x_driver_send_command(SLI_WLAN_REQ_HTTP_CLIENT_PUT, |
| 99 | + SLI_SI91X_NETWORK_CMD, |
| 100 | + request, |
| 101 | + packet_len, |
| 102 | + SLI_SI91X_WAIT_FOR_COMMAND_SUCCESS, |
| 103 | + NULL, |
| 104 | + NULL); |
| 105 | + // Free the memory allocated |
| 106 | + free(request); |
| 107 | + |
| 108 | + // Verify the status |
| 109 | + VERIFY_STATUS_AND_RETURN(status); |
| 110 | + return status; |
| 111 | +} |
| 112 | + |
| 113 | +static sl_http_client_callback_entry_t *sli_get_http_client_callback_entry(sl_http_client_event_t event) |
| 114 | +{ |
| 115 | + return ®istered_callback[event]; |
| 116 | +} |
| 117 | + |
| 118 | +sl_status_t sli_http_client_default_event_handler(sl_http_client_event_t event, |
| 119 | + sl_wifi_buffer_t *buffer, |
| 120 | + void *sdk_context) |
| 121 | +{ |
| 122 | + const sl_http_client_callback_entry_t *entry = sli_get_http_client_callback_entry(event); |
| 123 | + |
| 124 | + // Get the packet data from the buffer |
| 125 | + sl_wifi_packet_t *packet = (sl_wifi_packet_t *)sl_si91x_host_get_buffer_data(buffer, 0, NULL); |
| 126 | + |
| 127 | + // Convert the firmware status to a library status |
| 128 | + sl_status_t status = sli_convert_and_save_firmware_status(sli_get_si91x_frame_status(packet)); |
| 129 | + |
| 130 | + // Initialize an HTTP client response structure |
| 131 | + sl_http_client_response_t http_response = { 0 }; |
| 132 | + uint16_t end_of_data; |
| 133 | + uint16_t http_server_response; |
| 134 | + |
| 135 | + http_response.status = status; |
| 136 | + |
| 137 | + //! TBD |
| 138 | + http_response.response_headers = NULL; |
| 139 | + |
| 140 | + if ((entry == NULL) && (entry->callback_function == NULL)) { |
| 141 | + return SL_STATUS_FAIL; |
| 142 | + } |
| 143 | + |
| 144 | + SL_DEBUG_LOG("\r\n>>> %s : %x <<<\r\n", __func__, status); |
| 145 | + |
| 146 | + // Handle different HTTP client response types based on the packet's command |
| 147 | + switch (packet->command) { |
| 148 | + case SLI_WLAN_RSP_HTTP_CLIENT_GET: |
| 149 | + case SLI_WLAN_RSP_HTTP_CLIENT_POST: |
| 150 | + case SLI_WLAN_RSP_HTTP_CLIENT_POST_DATA: { |
| 151 | + // Handle GET, POST, and POST_DATA responses |
| 152 | + if (status == SL_STATUS_OK) { |
| 153 | + // Extract http server response from packet |
| 154 | + memcpy(&http_server_response, packet->data + 2, sizeof(uint16_t)); |
| 155 | + |
| 156 | + http_response.http_response_code = http_server_response; |
| 157 | + |
| 158 | + // Check http server response and fill other callback response data |
| 159 | + // http server response - success codes 200 to 299, failure codes 300 to 499 |
| 160 | + // http_server_response will be zero, if FW returns error for any http client cmd |
| 161 | + if (http_server_response == 0 || (http_server_response >= 200 && http_server_response <= 499)) { |
| 162 | + // Extract end of data indication from packet |
| 163 | + memcpy(&end_of_data, packet->data, sizeof(uint16_t)); |
| 164 | + |
| 165 | + http_response.end_of_data = end_of_data; |
| 166 | + http_response.data_buffer = &packet->data[SLI_SI91X_HTTP_OFFSET]; |
| 167 | + http_response.data_length = packet->length - SLI_SI91X_HTTP_OFFSET; |
| 168 | + } |
| 169 | + } else if (status == SL_STATUS_SI91X_HTTP_GET_CMD_IN_PROGRESS) { |
| 170 | + // Don't trigger the callback, If the HTTP GET execution is in progress |
| 171 | + return status; |
| 172 | + } |
| 173 | + break; |
| 174 | + } |
| 175 | + |
| 176 | + case SLI_WLAN_RSP_HTTP_CLIENT_PUT: { |
| 177 | + // Handle PUT responses |
| 178 | + uint8_t http_cmd_type = *packet->data; |
| 179 | + const sli_si91x_http_client_put_pkt_rsp_t *response = (sli_si91x_http_client_put_pkt_rsp_t *)&packet->data; |
| 180 | + const sli_si91x_http_put_pkt_server_rsp_t *server_rsp = (sli_si91x_http_put_pkt_server_rsp_t *)&packet->data; |
| 181 | + |
| 182 | + // Delete HTTP PUT client if PUT request fails |
| 183 | + if (status != SL_STATUS_OK) { |
| 184 | + sl_si91x_http_client_put_delete(); |
| 185 | + break; |
| 186 | + } |
| 187 | + |
| 188 | + // Check for HTTP_CLIENT_PUT_PKT command |
| 189 | + if (http_cmd_type == SLI_SI91X_HTTP_CLIENT_PUT_PKT) { |
| 190 | + http_response.data_length = 0; |
| 191 | + http_response.end_of_data = response->end_of_file; |
| 192 | + } |
| 193 | + // Check for HTTP Client PUT response from server |
| 194 | + else if (http_cmd_type == SLI_SI91X_HTTP_CLIENT_PUT_OFFSET_PKT) { |
| 195 | + http_response.data_length = (uint16_t)server_rsp->data_len; |
| 196 | + http_response.end_of_data = server_rsp->more; |
| 197 | + } |
| 198 | + |
| 199 | + http_response.data_buffer = &packet->data[SLI_SI91X_HTTP_PUT_OFFSET]; |
| 200 | + |
| 201 | + // 917 does not support HTTP Server response for SL_HTTP_PUT request |
| 202 | + http_response.http_response_code = 0; |
| 203 | + |
| 204 | + // Delete HTTP PUT client if end of data is 1 |
| 205 | + if (http_response.end_of_data) { |
| 206 | + sl_si91x_http_client_put_delete(); |
| 207 | + } |
| 208 | + |
| 209 | + break; |
| 210 | + } |
| 211 | + default: |
| 212 | + break; |
| 213 | + } |
| 214 | + return entry->callback_function(&entry->client_handle, event, &http_response, sdk_context); |
| 215 | +} |
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