1252 lines
45 KiB
C
1252 lines
45 KiB
C
// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <string.h>
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#include "esp_system.h"
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#include "esp_log.h"
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#include "http_header.h"
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#include "esp_transport.h"
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#include "esp_transport_tcp.h"
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#include "http_utils.h"
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#include "http_auth.h"
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#include "sdkconfig.h"
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#include "esp_http_client.h"
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#include "errno.h"
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#ifdef CONFIG_ESP_HTTP_CLIENT_ENABLE_HTTPS
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#include "esp_transport_ssl.h"
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#endif
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static const char *TAG = "HTTP_CLIENT";
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/**
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* HTTP Buffer
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*/
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typedef struct {
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char *data; /*!< The HTTP data received from the server */
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int len; /*!< The HTTP data len received from the server */
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char *raw_data; /*!< The HTTP data after decoding */
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int raw_len; /*!< The HTTP data len after decoding */
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char *output_ptr; /*!< The destination address of the data to be copied to after decoding */
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} esp_http_buffer_t;
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/**
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* private HTTP Data structure
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*/
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typedef struct {
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http_header_handle_t headers; /*!< http header */
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esp_http_buffer_t *buffer; /*!< data buffer as linked list */
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int status_code; /*!< status code (integer) */
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int content_length; /*!< data length */
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int data_offset; /*!< offset to http data (Skip header) */
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int data_process; /*!< data processed */
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int method; /*!< http method */
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bool is_chunked;
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} esp_http_data_t;
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typedef struct {
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char *url;
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char *scheme;
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char *host;
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int port;
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char *username;
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char *password;
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char *path;
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char *query;
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char *cert_pem;
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esp_http_client_method_t method;
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esp_http_client_auth_type_t auth_type;
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esp_http_client_transport_t transport_type;
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int max_store_header_size;
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} connection_info_t;
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typedef enum {
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HTTP_STATE_UNINIT = 0,
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HTTP_STATE_INIT,
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HTTP_STATE_CONNECTED,
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HTTP_STATE_REQ_COMPLETE_HEADER,
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HTTP_STATE_REQ_COMPLETE_DATA,
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HTTP_STATE_RES_COMPLETE_HEADER,
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HTTP_STATE_RES_COMPLETE_DATA,
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HTTP_STATE_CLOSE
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} esp_http_state_t;
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/**
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* HTTP client class
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*/
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struct esp_http_client {
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int redirect_counter;
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int max_redirection_count;
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int process_again;
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struct http_parser *parser;
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struct http_parser_settings *parser_settings;
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esp_transport_list_handle_t transport_list;
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esp_transport_handle_t transport;
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esp_http_data_t *request;
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esp_http_data_t *response;
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void *user_data;
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esp_http_auth_data_t *auth_data;
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char *post_data;
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char *location;
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char *auth_header;
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char *current_header_key;
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char *current_header_value;
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int post_len;
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connection_info_t connection_info;
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bool is_chunk_complete;
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esp_http_state_t state;
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http_event_handle_cb event_handler;
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int timeout_ms;
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int buffer_size;
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bool disable_auto_redirect;
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esp_http_client_event_t event;
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int data_written_index;
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int data_write_left;
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bool first_line_prepared;
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int header_index;
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bool is_async;
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};
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typedef struct esp_http_client esp_http_client_t;
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static esp_err_t _clear_connection_info(esp_http_client_handle_t client);
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/**
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* Default settings
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*/
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#define DEFAULT_HTTP_PORT (80)
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#define DEFAULT_HTTPS_PORT (443)
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#define ASYNC_TRANS_CONNECT_FAIL -1
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#define ASYNC_TRANS_CONNECTING 0
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#define ASYNC_TRANS_CONNECT_PASS 1
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static const char *DEFAULT_HTTP_USER_AGENT = "ESP32 HTTP Client/1.0";
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static const char *DEFAULT_HTTP_PROTOCOL = "HTTP/1.1";
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static const char *DEFAULT_HTTP_PATH = "/";
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static int DEFAULT_MAX_REDIRECT = 10;
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static int DEFAULT_TIMEOUT_MS = 5000;
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static const char *HTTP_METHOD_MAPPING[] = {
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"GET",
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"POST",
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"PUT",
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"PATCH",
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"DELETE",
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"HEAD",
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"NOTIFY",
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"SUBSCRIBE",
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"UNSUBSCRIBE",
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"OPTIONS"
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};
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/**
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* Enum for the HTTP status codes.
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*/
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enum HttpStatus_Code
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{
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/* 3xx - Redirection */
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HttpStatus_MovedPermanently = 301,
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HttpStatus_Found = 302,
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/* 4xx - Client Error */
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HttpStatus_Unauthorized = 401
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};
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static esp_err_t esp_http_client_request_send(esp_http_client_handle_t client, int write_len);
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static esp_err_t esp_http_client_connect(esp_http_client_handle_t client);
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static esp_err_t esp_http_client_send_post_data(esp_http_client_handle_t client);
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static esp_err_t http_dispatch_event(esp_http_client_t *client, esp_http_client_event_id_t event_id, void *data, int len)
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{
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esp_http_client_event_t *event = &client->event;
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if (client->event_handler) {
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event->event_id = event_id;
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event->user_data = client->user_data;
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event->data = data;
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event->data_len = len;
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return client->event_handler(event);
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}
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return ESP_OK;
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}
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static int http_on_message_begin(http_parser *parser)
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{
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esp_http_client_t *client = parser->data;
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ESP_LOGD(TAG, "on_message_begin");
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client->response->is_chunked = false;
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client->is_chunk_complete = false;
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return 0;
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}
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static int http_on_url(http_parser *parser, const char *at, size_t length)
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{
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ESP_LOGD(TAG, "http_on_url");
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return 0;
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}
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static int http_on_status(http_parser *parser, const char *at, size_t length)
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{
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return 0;
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}
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static int http_on_header_field(http_parser *parser, const char *at, size_t length)
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{
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esp_http_client_t *client = parser->data;
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http_utils_assign_string(&client->current_header_key, at, length);
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return 0;
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}
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static int http_on_header_value(http_parser *parser, const char *at, size_t length)
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{
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esp_http_client_handle_t client = parser->data;
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if (client->current_header_key == NULL) {
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return 0;
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}
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if (strcasecmp(client->current_header_key, "Location") == 0) {
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http_utils_assign_string(&client->location, at, length);
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} else if (strcasecmp(client->current_header_key, "Transfer-Encoding") == 0
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&& memcmp(at, "chunked", length) == 0) {
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client->response->is_chunked = true;
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} else if (strcasecmp(client->current_header_key, "WWW-Authenticate") == 0) {
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http_utils_assign_string(&client->auth_header, at, length);
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}
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http_utils_assign_string(&client->current_header_value, at, length);
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ESP_LOGD(TAG, "HEADER=%s:%s", client->current_header_key, client->current_header_value);
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client->event.header_key = client->current_header_key;
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client->event.header_value = client->current_header_value;
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http_dispatch_event(client, HTTP_EVENT_ON_HEADER, NULL, 0);
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free(client->current_header_key);
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free(client->current_header_value);
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client->current_header_key = NULL;
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client->current_header_value = NULL;
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return 0;
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}
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static int http_on_headers_complete(http_parser *parser)
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{
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esp_http_client_handle_t client = parser->data;
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client->response->status_code = parser->status_code;
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client->response->data_offset = parser->nread;
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client->response->content_length = parser->content_length;
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client->response->data_process = 0;
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ESP_LOGD(TAG, "http_on_headers_complete, status=%d, offset=%d, nread=%d", parser->status_code, client->response->data_offset, parser->nread);
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client->state = HTTP_STATE_RES_COMPLETE_HEADER;
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return 0;
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}
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static int http_on_body(http_parser *parser, const char *at, size_t length)
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{
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esp_http_client_t *client = parser->data;
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ESP_LOGD(TAG, "http_on_body %d", length);
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client->response->buffer->raw_data = (char *)at;
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if (client->response->buffer->output_ptr) {
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memcpy(client->response->buffer->output_ptr, (char *)at, length);
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client->response->buffer->output_ptr += length;
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}
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client->response->data_process += length;
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client->response->buffer->raw_len += length;
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http_dispatch_event(client, HTTP_EVENT_ON_DATA, (void *)at, length);
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return 0;
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}
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static int http_on_message_complete(http_parser *parser)
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{
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ESP_LOGD(TAG, "http_on_message_complete, parser=%x", (int)parser);
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esp_http_client_handle_t client = parser->data;
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client->is_chunk_complete = true;
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return 0;
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}
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static int http_on_chunk_complete(http_parser *parser)
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{
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ESP_LOGD(TAG, "http_on_chunk_complete");
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return 0;
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}
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esp_err_t esp_http_client_set_header(esp_http_client_handle_t client, const char *key, const char *value)
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{
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return http_header_set(client->request->headers, key, value);
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}
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esp_err_t esp_http_client_get_header(esp_http_client_handle_t client, const char *key, char **value)
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{
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return http_header_get(client->request->headers, key, value);
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}
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esp_err_t esp_http_client_delete_header(esp_http_client_handle_t client, const char *key)
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{
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return http_header_delete(client->request->headers, key);
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}
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esp_err_t esp_http_client_get_username(esp_http_client_handle_t client, char **value)
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{
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if (client == NULL || value == NULL) {
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ESP_LOGE(TAG, "client or value must not be NULL");
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return ESP_ERR_INVALID_ARG;
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}
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*value = client->connection_info.username;
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return ESP_OK;
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}
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esp_err_t esp_http_client_get_password(esp_http_client_handle_t client, char **value)
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{
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if (client == NULL || value == NULL) {
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ESP_LOGE(TAG, "client or value must not be NULL");
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return ESP_ERR_INVALID_ARG;
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}
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*value = client->connection_info.password;
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return ESP_OK;
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}
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static esp_err_t _set_config(esp_http_client_handle_t client, const esp_http_client_config_t *config)
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{
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client->connection_info.method = config->method;
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client->connection_info.port = config->port;
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client->connection_info.auth_type = config->auth_type;
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client->event_handler = config->event_handler;
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client->timeout_ms = config->timeout_ms;
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client->max_redirection_count = config->max_redirection_count;
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client->user_data = config->user_data;
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client->buffer_size = config->buffer_size;
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client->disable_auto_redirect = config->disable_auto_redirect;
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if (config->buffer_size == 0) {
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client->buffer_size = DEFAULT_HTTP_BUF_SIZE;
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}
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if (client->max_redirection_count == 0) {
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client->max_redirection_count = DEFAULT_MAX_REDIRECT;
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}
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if (config->path) {
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client->connection_info.path = strdup(config->path);
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} else {
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client->connection_info.path = strdup(DEFAULT_HTTP_PATH);
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}
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HTTP_MEM_CHECK(TAG, client->connection_info.path, {
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return ESP_ERR_NO_MEM;
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});
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if (config->host) {
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client->connection_info.host = strdup(config->host);
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HTTP_MEM_CHECK(TAG, client->connection_info.host, {
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_clear_connection_info(client);
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return ESP_ERR_NO_MEM;
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});
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}
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if (config->query) {
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client->connection_info.query = strdup(config->query);
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HTTP_MEM_CHECK(TAG, client->connection_info.query, {
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_clear_connection_info(client);
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return ESP_ERR_NO_MEM;
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});
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}
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if (config->username) {
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client->connection_info.username = strdup(config->username);
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HTTP_MEM_CHECK(TAG, client->connection_info.username, {
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_clear_connection_info(client);
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return ESP_ERR_NO_MEM;
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});
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}
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if (config->password) {
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client->connection_info.password = strdup(config->password);
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HTTP_MEM_CHECK(TAG, client->connection_info.password, {
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_clear_connection_info(client);
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return ESP_ERR_NO_MEM;
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});
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}
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if (config->transport_type == HTTP_TRANSPORT_OVER_SSL) {
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http_utils_assign_string(&client->connection_info.scheme, "https", 0);
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if (client->connection_info.port == 0) {
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client->connection_info.port = DEFAULT_HTTPS_PORT;
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}
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} else {
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http_utils_assign_string(&client->connection_info.scheme, "http", 0);
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if (client->connection_info.port == 0) {
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client->connection_info.port = DEFAULT_HTTP_PORT;
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}
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}
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if (client->timeout_ms == 0) {
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client->timeout_ms = DEFAULT_TIMEOUT_MS;
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}
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if (config->is_async) {
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client->is_async = true;
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}
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return ESP_OK;
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}
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static esp_err_t _clear_connection_info(esp_http_client_handle_t client)
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{
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free(client->connection_info.path);
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free(client->connection_info.host);
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free(client->connection_info.query);
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free(client->connection_info.username);
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if (client->connection_info.password) {
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memset(client->connection_info.password, 0, strlen(client->connection_info.password));
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free(client->connection_info.password);
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}
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free(client->connection_info.scheme);
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free(client->connection_info.url);
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memset(&client->connection_info, 0, sizeof(connection_info_t));
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return ESP_OK;
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}
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static esp_err_t _clear_auth_data(esp_http_client_handle_t client)
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{
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if (client->auth_data == NULL) {
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return ESP_FAIL;
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}
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free(client->auth_data->method);
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free(client->auth_data->realm);
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free(client->auth_data->algorithm);
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free(client->auth_data->qop);
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free(client->auth_data->nonce);
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free(client->auth_data->opaque);
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memset(client->auth_data, 0, sizeof(esp_http_auth_data_t));
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return ESP_OK;
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}
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static esp_err_t esp_http_client_prepare(esp_http_client_handle_t client)
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{
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client->process_again = 0;
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client->response->data_process = 0;
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client->first_line_prepared = false;
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http_parser_init(client->parser, HTTP_RESPONSE);
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if (client->connection_info.username) {
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char *auth_response = NULL;
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if (client->connection_info.auth_type == HTTP_AUTH_TYPE_BASIC) {
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auth_response = http_auth_basic(client->connection_info.username, client->connection_info.password);
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} else if (client->connection_info.auth_type == HTTP_AUTH_TYPE_DIGEST && client->auth_data) {
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client->auth_data->uri = client->connection_info.path;
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client->auth_data->cnonce = ((uint64_t)esp_random() << 32) + esp_random();
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auth_response = http_auth_digest(client->connection_info.username, client->connection_info.password, client->auth_data);
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client->auth_data->nc ++;
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}
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if (auth_response) {
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ESP_LOGD(TAG, "auth_response=%s", auth_response);
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esp_http_client_set_header(client, "Authorization", auth_response);
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free(auth_response);
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}
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}
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return ESP_OK;
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}
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esp_http_client_handle_t esp_http_client_init(const esp_http_client_config_t *config)
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{
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esp_http_client_handle_t client;
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esp_transport_handle_t tcp;
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bool _success;
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_success = (
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(client = calloc(1, sizeof(esp_http_client_t))) &&
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(client->parser = calloc(1, sizeof(struct http_parser))) &&
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(client->parser_settings = calloc(1, sizeof(struct http_parser_settings))) &&
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(client->auth_data = calloc(1, sizeof(esp_http_auth_data_t))) &&
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(client->request = calloc(1, sizeof(esp_http_data_t))) &&
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(client->request->headers = http_header_init()) &&
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(client->request->buffer = calloc(1, sizeof(esp_http_buffer_t))) &&
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(client->response = calloc(1, sizeof(esp_http_data_t))) &&
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(client->response->headers = http_header_init()) &&
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(client->response->buffer = calloc(1, sizeof(esp_http_buffer_t)))
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);
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if (!_success) {
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ESP_LOGE(TAG, "Error allocate memory");
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goto error;
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}
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_success = (
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(client->transport_list = esp_transport_list_init()) &&
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(tcp = esp_transport_tcp_init()) &&
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(esp_transport_set_default_port(tcp, DEFAULT_HTTP_PORT) == ESP_OK) &&
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(esp_transport_list_add(client->transport_list, tcp, "http") == ESP_OK)
|
|
);
|
|
if (!_success) {
|
|
ESP_LOGE(TAG, "Error initialize transport");
|
|
goto error;
|
|
}
|
|
#ifdef CONFIG_ESP_HTTP_CLIENT_ENABLE_HTTPS
|
|
esp_transport_handle_t ssl;
|
|
_success = (
|
|
(ssl = esp_transport_ssl_init()) &&
|
|
(esp_transport_set_default_port(ssl, DEFAULT_HTTPS_PORT) == ESP_OK) &&
|
|
(esp_transport_list_add(client->transport_list, ssl, "https") == ESP_OK)
|
|
);
|
|
|
|
if (!_success) {
|
|
ESP_LOGE(TAG, "Error initialize SSL Transport");
|
|
goto error;
|
|
}
|
|
|
|
if (config->use_global_ca_store == true) {
|
|
esp_transport_ssl_enable_global_ca_store(ssl);
|
|
} else if (config->cert_pem) {
|
|
esp_transport_ssl_set_cert_data(ssl, config->cert_pem, strlen(config->cert_pem));
|
|
}
|
|
|
|
if (config->client_cert_pem) {
|
|
esp_transport_ssl_set_client_cert_data(ssl, config->client_cert_pem, strlen(config->client_cert_pem));
|
|
}
|
|
|
|
if (config->client_key_pem) {
|
|
esp_transport_ssl_set_client_key_data(ssl, config->client_key_pem, strlen(config->client_key_pem));
|
|
}
|
|
#endif
|
|
|
|
if (_set_config(client, config) != ESP_OK) {
|
|
ESP_LOGE(TAG, "Error set configurations");
|
|
goto error;
|
|
}
|
|
_success = (
|
|
(client->request->buffer->data = malloc(client->buffer_size)) &&
|
|
(client->response->buffer->data = malloc(client->buffer_size))
|
|
);
|
|
|
|
if (!_success) {
|
|
ESP_LOGE(TAG, "Allocation failed");
|
|
goto error;
|
|
}
|
|
|
|
if (config->host != NULL && config->path != NULL) {
|
|
_success = (
|
|
(esp_http_client_set_header(client, "User-Agent", DEFAULT_HTTP_USER_AGENT) == ESP_OK) &&
|
|
(esp_http_client_set_header(client, "Host", client->connection_info.host) == ESP_OK)
|
|
);
|
|
|
|
if (!_success) {
|
|
ESP_LOGE(TAG, "Error while setting default configurations");
|
|
goto error;
|
|
}
|
|
} else if (config->url != NULL) {
|
|
_success = (
|
|
(esp_http_client_set_url(client, config->url) == ESP_OK) &&
|
|
(esp_http_client_set_header(client, "User-Agent", DEFAULT_HTTP_USER_AGENT) == ESP_OK) &&
|
|
(esp_http_client_set_header(client, "Host", client->connection_info.host) == ESP_OK)
|
|
);
|
|
|
|
if (!_success) {
|
|
ESP_LOGE(TAG, "Error while setting default configurations");
|
|
goto error;
|
|
}
|
|
} else {
|
|
ESP_LOGE(TAG, "config should have either URL or host & path");
|
|
goto error;
|
|
}
|
|
|
|
client->parser_settings->on_message_begin = http_on_message_begin;
|
|
client->parser_settings->on_url = http_on_url;
|
|
client->parser_settings->on_status = http_on_status;
|
|
client->parser_settings->on_header_field = http_on_header_field;
|
|
client->parser_settings->on_header_value = http_on_header_value;
|
|
client->parser_settings->on_headers_complete = http_on_headers_complete;
|
|
client->parser_settings->on_body = http_on_body;
|
|
client->parser_settings->on_message_complete = http_on_message_complete;
|
|
client->parser_settings->on_chunk_complete = http_on_chunk_complete;
|
|
client->parser->data = client;
|
|
client->event.client = client;
|
|
|
|
client->state = HTTP_STATE_INIT;
|
|
return client;
|
|
error:
|
|
esp_http_client_cleanup(client);
|
|
return NULL;
|
|
}
|
|
|
|
esp_err_t esp_http_client_cleanup(esp_http_client_handle_t client)
|
|
{
|
|
if (client == NULL) {
|
|
return ESP_FAIL;
|
|
}
|
|
esp_http_client_close(client);
|
|
esp_transport_list_destroy(client->transport_list);
|
|
http_header_destroy(client->request->headers);
|
|
free(client->request->buffer->data);
|
|
free(client->request->buffer);
|
|
free(client->request);
|
|
http_header_destroy(client->response->headers);
|
|
free(client->response->buffer->data);
|
|
free(client->response->buffer);
|
|
free(client->response);
|
|
|
|
free(client->parser);
|
|
free(client->parser_settings);
|
|
_clear_connection_info(client);
|
|
_clear_auth_data(client);
|
|
free(client->auth_data);
|
|
free(client->current_header_key);
|
|
free(client->location);
|
|
free(client->auth_header);
|
|
free(client);
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t esp_http_client_set_redirection(esp_http_client_handle_t client)
|
|
{
|
|
if (client == NULL) {
|
|
return ESP_ERR_INVALID_ARG;
|
|
}
|
|
if (client->location == NULL) {
|
|
return ESP_ERR_INVALID_ARG;
|
|
}
|
|
return esp_http_client_set_url(client, client->location);
|
|
}
|
|
|
|
static esp_err_t esp_http_check_response(esp_http_client_handle_t client)
|
|
{
|
|
char *auth_header = NULL;
|
|
|
|
if (client->redirect_counter >= client->max_redirection_count || client->disable_auto_redirect) {
|
|
ESP_LOGE(TAG, "Error, reach max_redirection_count count=%d", client->redirect_counter);
|
|
return ESP_ERR_HTTP_MAX_REDIRECT;
|
|
}
|
|
switch (client->response->status_code) {
|
|
case HttpStatus_MovedPermanently:
|
|
case HttpStatus_Found:
|
|
ESP_LOGI(TAG, "Redirect to %s", client->location);
|
|
esp_http_client_set_url(client, client->location);
|
|
client->redirect_counter ++;
|
|
client->process_again = 1;
|
|
break;
|
|
case HttpStatus_Unauthorized:
|
|
auth_header = client->auth_header;
|
|
if (auth_header) {
|
|
http_utils_trim_whitespace(&auth_header);
|
|
ESP_LOGD(TAG, "UNAUTHORIZED: %s", auth_header);
|
|
client->redirect_counter ++;
|
|
if (http_utils_str_starts_with(auth_header, "Digest") == 0) {
|
|
ESP_LOGD(TAG, "type = Digest");
|
|
client->connection_info.auth_type = HTTP_AUTH_TYPE_DIGEST;
|
|
} else if (http_utils_str_starts_with(auth_header, "Basic") == 0) {
|
|
ESP_LOGD(TAG, "type = Basic");
|
|
client->connection_info.auth_type = HTTP_AUTH_TYPE_BASIC;
|
|
} else {
|
|
client->connection_info.auth_type = HTTP_AUTH_TYPE_NONE;
|
|
ESP_LOGE(TAG, "This authentication method is not supported: %s", auth_header);
|
|
break;
|
|
}
|
|
|
|
_clear_auth_data(client);
|
|
|
|
client->auth_data->method = strdup(HTTP_METHOD_MAPPING[client->connection_info.method]);
|
|
|
|
client->auth_data->nc = 1;
|
|
client->auth_data->realm = http_utils_get_string_between(auth_header, "realm=\"", "\"");
|
|
client->auth_data->algorithm = http_utils_get_string_between(auth_header, "algorithm=", ",");
|
|
client->auth_data->qop = http_utils_get_string_between(auth_header, "qop=\"", "\"");
|
|
client->auth_data->nonce = http_utils_get_string_between(auth_header, "nonce=\"", "\"");
|
|
client->auth_data->opaque = http_utils_get_string_between(auth_header, "opaque=\"", "\"");
|
|
client->process_again = 1;
|
|
} else {
|
|
client->connection_info.auth_type = HTTP_AUTH_TYPE_NONE;
|
|
ESP_LOGW(TAG, "This request requires authentication, but does not provide header information for that");
|
|
}
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t esp_http_client_set_url(esp_http_client_handle_t client, const char *url)
|
|
{
|
|
char *old_host = NULL;
|
|
struct http_parser_url purl;
|
|
int old_port;
|
|
|
|
if (client == NULL || url == NULL) {
|
|
ESP_LOGE(TAG, "client or url must not NULL");
|
|
return ESP_ERR_INVALID_ARG;
|
|
}
|
|
|
|
http_parser_url_init(&purl);
|
|
|
|
int parser_status = http_parser_parse_url(url, strlen(url), 0, &purl);
|
|
|
|
if (parser_status != 0) {
|
|
ESP_LOGE(TAG, "Error parse url %s", url);
|
|
return ESP_ERR_INVALID_ARG;
|
|
}
|
|
if (client->connection_info.host) {
|
|
old_host = strdup(client->connection_info.host);
|
|
}
|
|
old_port = client->connection_info.port;
|
|
|
|
// Whether the passed url is absolute or is just a path
|
|
bool is_absolute_url = (bool) purl.field_data[UF_HOST].len;
|
|
|
|
if (is_absolute_url) {
|
|
http_utils_assign_string(&client->connection_info.host, url + purl.field_data[UF_HOST].off, purl.field_data[UF_HOST].len);
|
|
HTTP_MEM_CHECK(TAG, client->connection_info.host, return ESP_ERR_NO_MEM);
|
|
}
|
|
// Close the connection if host was changed
|
|
if (old_host && client->connection_info.host
|
|
&& strcasecmp(old_host, (const void *)client->connection_info.host) != 0) {
|
|
ESP_LOGD(TAG, "New host assign = %s", client->connection_info.host);
|
|
if (esp_http_client_set_header(client, "Host", client->connection_info.host) != ESP_OK) {
|
|
free(old_host);
|
|
return ESP_ERR_NO_MEM;
|
|
}
|
|
esp_http_client_close(client);
|
|
}
|
|
|
|
if (old_host) {
|
|
free(old_host);
|
|
old_host = NULL;
|
|
}
|
|
|
|
if (purl.field_data[UF_SCHEMA].len) {
|
|
http_utils_assign_string(&client->connection_info.scheme, url + purl.field_data[UF_SCHEMA].off, purl.field_data[UF_SCHEMA].len);
|
|
HTTP_MEM_CHECK(TAG, client->connection_info.scheme, return ESP_ERR_NO_MEM);
|
|
|
|
if (strcasecmp(client->connection_info.scheme, "http") == 0) {
|
|
client->connection_info.port = DEFAULT_HTTP_PORT;
|
|
} else if (strcasecmp(client->connection_info.scheme, "https") == 0) {
|
|
client->connection_info.port = DEFAULT_HTTPS_PORT;
|
|
}
|
|
}
|
|
|
|
if (purl.field_data[UF_PORT].len) {
|
|
client->connection_info.port = strtol((const char*)(url + purl.field_data[UF_PORT].off), NULL, 10);
|
|
}
|
|
|
|
if (old_port != client->connection_info.port) {
|
|
esp_http_client_close(client);
|
|
}
|
|
|
|
if (purl.field_data[UF_USERINFO].len) {
|
|
char *user_info = NULL;
|
|
http_utils_assign_string(&user_info, url + purl.field_data[UF_USERINFO].off, purl.field_data[UF_USERINFO].len);
|
|
if (user_info) {
|
|
char *username = user_info;
|
|
char *password = strchr(user_info, ':');
|
|
if (password) {
|
|
*password = 0;
|
|
password ++;
|
|
http_utils_assign_string(&client->connection_info.password, password, 0);
|
|
HTTP_MEM_CHECK(TAG, client->connection_info.password, return ESP_ERR_NO_MEM);
|
|
}
|
|
http_utils_assign_string(&client->connection_info.username, username, 0);
|
|
HTTP_MEM_CHECK(TAG, client->connection_info.username, return ESP_ERR_NO_MEM);
|
|
free(user_info);
|
|
} else {
|
|
return ESP_ERR_NO_MEM;
|
|
}
|
|
} else if (is_absolute_url) {
|
|
// Only reset authentication info if the passed URL is full
|
|
free(client->connection_info.username);
|
|
free(client->connection_info.password);
|
|
client->connection_info.username = NULL;
|
|
client->connection_info.password = NULL;
|
|
}
|
|
|
|
|
|
//Reset path and query if there are no information
|
|
if (purl.field_data[UF_PATH].len) {
|
|
http_utils_assign_string(&client->connection_info.path, url + purl.field_data[UF_PATH].off, purl.field_data[UF_PATH].len);
|
|
} else {
|
|
http_utils_assign_string(&client->connection_info.path, "/", 0);
|
|
}
|
|
HTTP_MEM_CHECK(TAG, client->connection_info.path, return ESP_ERR_NO_MEM);
|
|
|
|
if (purl.field_data[UF_QUERY].len) {
|
|
http_utils_assign_string(&client->connection_info.query, url + purl.field_data[UF_QUERY].off, purl.field_data[UF_QUERY].len);
|
|
HTTP_MEM_CHECK(TAG, client->connection_info.query, return ESP_ERR_NO_MEM);
|
|
} else if (client->connection_info.query) {
|
|
free(client->connection_info.query);
|
|
client->connection_info.query = NULL;
|
|
}
|
|
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t esp_http_client_set_method(esp_http_client_handle_t client, esp_http_client_method_t method)
|
|
{
|
|
client->connection_info.method = method;
|
|
return ESP_OK;
|
|
}
|
|
|
|
static int esp_http_client_get_data(esp_http_client_handle_t client)
|
|
{
|
|
if (client->state < HTTP_STATE_RES_COMPLETE_HEADER) {
|
|
return ESP_FAIL;
|
|
}
|
|
|
|
if (client->connection_info.method == HTTP_METHOD_HEAD) {
|
|
return 0;
|
|
}
|
|
|
|
esp_http_buffer_t *res_buffer = client->response->buffer;
|
|
|
|
ESP_LOGD(TAG, "data_process=%d, content_length=%d", client->response->data_process, client->response->content_length);
|
|
|
|
int rlen = esp_transport_read(client->transport, res_buffer->data, client->buffer_size, client->timeout_ms);
|
|
if (rlen >= 0) {
|
|
http_parser_execute(client->parser, client->parser_settings, res_buffer->data, rlen);
|
|
}
|
|
return rlen;
|
|
}
|
|
|
|
int esp_http_client_read(esp_http_client_handle_t client, char *buffer, int len)
|
|
{
|
|
esp_http_buffer_t *res_buffer = client->response->buffer;
|
|
|
|
int rlen = ESP_FAIL, ridx = 0;
|
|
if (res_buffer->raw_len) {
|
|
int remain_len = client->response->buffer->raw_len;
|
|
if (remain_len > len) {
|
|
remain_len = len;
|
|
}
|
|
memcpy(buffer, res_buffer->raw_data, remain_len);
|
|
res_buffer->raw_len -= remain_len;
|
|
res_buffer->raw_data += remain_len;
|
|
ridx = remain_len;
|
|
}
|
|
int need_read = len - ridx;
|
|
bool is_data_remain = true;
|
|
while (need_read > 0 && is_data_remain) {
|
|
if (client->response->is_chunked) {
|
|
is_data_remain = !client->is_chunk_complete;
|
|
} else {
|
|
is_data_remain = client->response->data_process < client->response->content_length;
|
|
}
|
|
ESP_LOGD(TAG, "is_data_remain=%d, is_chunked=%d", is_data_remain, client->response->is_chunked);
|
|
if (!is_data_remain) {
|
|
break;
|
|
}
|
|
int byte_to_read = need_read;
|
|
if (byte_to_read > client->buffer_size) {
|
|
byte_to_read = client->buffer_size;
|
|
}
|
|
rlen = esp_transport_read(client->transport, res_buffer->data, byte_to_read, client->timeout_ms);
|
|
ESP_LOGD(TAG, "need_read=%d, byte_to_read=%d, rlen=%d, ridx=%d", need_read, byte_to_read, rlen, ridx);
|
|
|
|
if (rlen <= 0) {
|
|
return ridx;
|
|
}
|
|
res_buffer->output_ptr = buffer + ridx;
|
|
http_parser_execute(client->parser, client->parser_settings, res_buffer->data, rlen);
|
|
ridx += res_buffer->raw_len;
|
|
need_read -= res_buffer->raw_len;
|
|
|
|
res_buffer->raw_len = 0; //clear
|
|
res_buffer->output_ptr = NULL;
|
|
}
|
|
|
|
return ridx;
|
|
}
|
|
|
|
esp_err_t esp_http_client_perform(esp_http_client_handle_t client)
|
|
{
|
|
esp_err_t err;
|
|
do {
|
|
if (client->process_again) {
|
|
esp_http_client_prepare(client);
|
|
}
|
|
switch (client->state) {
|
|
/* In case of blocking esp_http_client_perform(), the following states will fall through one after the after;
|
|
in case of non-blocking esp_http_client_perform(), if there is an error condition, like EINPROGRESS or EAGAIN,
|
|
then the esp_http_client_perform() API will return ESP_ERR_HTTP_EAGAIN error. The user may call
|
|
esp_http_client_perform API again, and for this reason, we maintain the states */
|
|
case HTTP_STATE_INIT:
|
|
if ((err = esp_http_client_connect(client)) != ESP_OK) {
|
|
if (client->is_async && err == ESP_ERR_HTTP_CONNECTING) {
|
|
return ESP_ERR_HTTP_EAGAIN;
|
|
}
|
|
return err;
|
|
}
|
|
/* falls through */
|
|
case HTTP_STATE_CONNECTED:
|
|
if ((err = esp_http_client_request_send(client, client->post_len)) != ESP_OK) {
|
|
if (client->is_async && errno == EAGAIN) {
|
|
return ESP_ERR_HTTP_EAGAIN;
|
|
}
|
|
return err;
|
|
}
|
|
/* falls through */
|
|
case HTTP_STATE_REQ_COMPLETE_HEADER:
|
|
if ((err = esp_http_client_send_post_data(client)) != ESP_OK) {
|
|
if (client->is_async && errno == EAGAIN) {
|
|
return ESP_ERR_HTTP_EAGAIN;
|
|
}
|
|
return err;
|
|
}
|
|
/* falls through */
|
|
case HTTP_STATE_REQ_COMPLETE_DATA:
|
|
if (esp_http_client_fetch_headers(client) < 0) {
|
|
if (client->is_async && errno == EAGAIN) {
|
|
return ESP_ERR_HTTP_EAGAIN;
|
|
}
|
|
return ESP_ERR_HTTP_FETCH_HEADER;
|
|
}
|
|
/* falls through */
|
|
case HTTP_STATE_RES_COMPLETE_HEADER:
|
|
if ((err = esp_http_check_response(client)) != ESP_OK) {
|
|
ESP_LOGE(TAG, "Error response");
|
|
return err;
|
|
}
|
|
while (client->response->is_chunked && !client->is_chunk_complete) {
|
|
if (esp_http_client_get_data(client) <= 0) {
|
|
if (client->is_async && errno == EAGAIN) {
|
|
return ESP_ERR_HTTP_EAGAIN;
|
|
}
|
|
ESP_LOGD(TAG, "Read finish or server requests close");
|
|
break;
|
|
}
|
|
}
|
|
while (client->response->data_process < client->response->content_length) {
|
|
if (esp_http_client_get_data(client) <= 0) {
|
|
if (client->is_async && errno == EAGAIN) {
|
|
return ESP_ERR_HTTP_EAGAIN;
|
|
}
|
|
ESP_LOGD(TAG, "Read finish or server requests close");
|
|
break;
|
|
}
|
|
}
|
|
http_dispatch_event(client, HTTP_EVENT_ON_FINISH, NULL, 0);
|
|
|
|
if (!http_should_keep_alive(client->parser)) {
|
|
ESP_LOGD(TAG, "Close connection");
|
|
esp_http_client_close(client);
|
|
} else {
|
|
if (client->state > HTTP_STATE_CONNECTED) {
|
|
client->state = HTTP_STATE_CONNECTED;
|
|
client->first_line_prepared = false;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} while (client->process_again);
|
|
return ESP_OK;
|
|
}
|
|
|
|
int esp_http_client_fetch_headers(esp_http_client_handle_t client)
|
|
{
|
|
if (client->state < HTTP_STATE_REQ_COMPLETE_HEADER) {
|
|
return ESP_FAIL;
|
|
}
|
|
|
|
client->state = HTTP_STATE_REQ_COMPLETE_DATA;
|
|
esp_http_buffer_t *buffer = client->response->buffer;
|
|
client->response->status_code = -1;
|
|
|
|
while (client->state < HTTP_STATE_RES_COMPLETE_HEADER) {
|
|
buffer->len = esp_transport_read(client->transport, buffer->data, client->buffer_size, client->timeout_ms);
|
|
if (buffer->len <= 0) {
|
|
return ESP_FAIL;
|
|
}
|
|
http_parser_execute(client->parser, client->parser_settings, buffer->data, buffer->len);
|
|
}
|
|
ESP_LOGD(TAG, "content_length = %d", client->response->content_length);
|
|
if (client->response->content_length <= 0) {
|
|
client->response->is_chunked = true;
|
|
return 0;
|
|
}
|
|
return client->response->content_length;
|
|
}
|
|
|
|
static esp_err_t esp_http_client_connect(esp_http_client_handle_t client)
|
|
{
|
|
esp_err_t err;
|
|
|
|
if (client->state == HTTP_STATE_UNINIT) {
|
|
ESP_LOGE(TAG, "Client has not been initialized");
|
|
return ESP_ERR_INVALID_STATE;
|
|
}
|
|
|
|
if ((err = esp_http_client_prepare(client)) != ESP_OK) {
|
|
ESP_LOGE(TAG, "Failed to initialize request data");
|
|
esp_http_client_close(client);
|
|
return err;
|
|
}
|
|
|
|
if (client->state < HTTP_STATE_CONNECTED) {
|
|
ESP_LOGD(TAG, "Begin connect to: %s://%s:%d", client->connection_info.scheme, client->connection_info.host, client->connection_info.port);
|
|
client->transport = esp_transport_list_get_transport(client->transport_list, client->connection_info.scheme);
|
|
if (client->transport == NULL) {
|
|
ESP_LOGE(TAG, "No transport found");
|
|
#ifndef CONFIG_ESP_HTTP_CLIENT_ENABLE_HTTPS
|
|
if (strcasecmp(client->connection_info.scheme, "https") == 0) {
|
|
ESP_LOGE(TAG, "Please enable HTTPS at menuconfig to allow requesting via https");
|
|
}
|
|
#endif
|
|
return ESP_ERR_HTTP_INVALID_TRANSPORT;
|
|
}
|
|
if (!client->is_async) {
|
|
if (esp_transport_connect(client->transport, client->connection_info.host, client->connection_info.port, client->timeout_ms) < 0) {
|
|
ESP_LOGE(TAG, "Connection failed, sock < 0");
|
|
return ESP_ERR_HTTP_CONNECT;
|
|
}
|
|
} else {
|
|
int ret = esp_transport_connect_async(client->transport, client->connection_info.host, client->connection_info.port, client->timeout_ms);
|
|
if (ret == ASYNC_TRANS_CONNECT_FAIL) {
|
|
ESP_LOGE(TAG, "Connection failed");
|
|
if (strcasecmp(client->connection_info.scheme, "http") == 0) {
|
|
ESP_LOGE(TAG, "Asynchronous mode doesn't work for HTTP based connection");
|
|
return ESP_ERR_INVALID_ARG;
|
|
}
|
|
return ESP_ERR_HTTP_CONNECT;
|
|
} else if (ret == ASYNC_TRANS_CONNECTING) {
|
|
ESP_LOGD(TAG, "Connection not yet established");
|
|
return ESP_ERR_HTTP_CONNECTING;
|
|
}
|
|
}
|
|
client->state = HTTP_STATE_CONNECTED;
|
|
http_dispatch_event(client, HTTP_EVENT_ON_CONNECTED, NULL, 0);
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
static int http_client_prepare_first_line(esp_http_client_handle_t client, int write_len)
|
|
{
|
|
if (write_len >= 0) {
|
|
http_header_set_format(client->request->headers, "Content-Length", "%d", write_len);
|
|
} else {
|
|
esp_http_client_set_header(client, "Transfer-Encoding", "chunked");
|
|
esp_http_client_set_method(client, HTTP_METHOD_POST);
|
|
}
|
|
|
|
const char *method = HTTP_METHOD_MAPPING[client->connection_info.method];
|
|
|
|
int first_line_len = snprintf(client->request->buffer->data,
|
|
client->buffer_size, "%s %s",
|
|
method,
|
|
client->connection_info.path);
|
|
if (first_line_len >= client->buffer_size) {
|
|
ESP_LOGE(TAG, "Out of buffer");
|
|
return -1;
|
|
}
|
|
|
|
if (client->connection_info.query) {
|
|
first_line_len += snprintf(client->request->buffer->data + first_line_len,
|
|
client->buffer_size - first_line_len, "?%s", client->connection_info.query);
|
|
if (first_line_len >= client->buffer_size) {
|
|
ESP_LOGE(TAG, "Out of buffer");
|
|
return -1;
|
|
|
|
}
|
|
}
|
|
first_line_len += snprintf(client->request->buffer->data + first_line_len,
|
|
client->buffer_size - first_line_len, " %s\r\n", DEFAULT_HTTP_PROTOCOL);
|
|
if (first_line_len >= client->buffer_size) {
|
|
ESP_LOGE(TAG, "Out of buffer");
|
|
return -1;
|
|
}
|
|
return first_line_len;
|
|
}
|
|
|
|
static esp_err_t esp_http_client_request_send(esp_http_client_handle_t client, int write_len)
|
|
{
|
|
int first_line_len = 0;
|
|
if (!client->first_line_prepared) {
|
|
if ((first_line_len = http_client_prepare_first_line(client, write_len)) < 0) {
|
|
return first_line_len;
|
|
}
|
|
client->first_line_prepared = true;
|
|
client->header_index = 0;
|
|
client->data_written_index = 0;
|
|
client->data_write_left = 0;
|
|
}
|
|
|
|
if (client->data_write_left > 0) {
|
|
/* sending leftover data from previous call to esp_http_client_request_send() API */
|
|
int wret = 0;
|
|
if (((wret = esp_http_client_write(client, client->request->buffer->data + client->data_written_index, client->data_write_left)) < 0)) {
|
|
ESP_LOGE(TAG, "Error write request");
|
|
return ESP_ERR_HTTP_WRITE_DATA;
|
|
}
|
|
client->data_write_left -= wret;
|
|
client->data_written_index += wret;
|
|
if (client->is_async && client->data_write_left > 0) {
|
|
return ESP_ERR_HTTP_WRITE_DATA; /* In case of EAGAIN error, we return ESP_ERR_HTTP_WRITE_DATA,
|
|
and the handling of EAGAIN should be done in the higher level APIs. */
|
|
}
|
|
}
|
|
|
|
int wlen = client->buffer_size - first_line_len;
|
|
while ((client->header_index = http_header_generate_string(client->request->headers, client->header_index, client->request->buffer->data + first_line_len, &wlen))) {
|
|
if (wlen <= 0) {
|
|
break;
|
|
}
|
|
if (first_line_len) {
|
|
wlen += first_line_len;
|
|
first_line_len = 0;
|
|
}
|
|
client->request->buffer->data[wlen] = 0;
|
|
ESP_LOGD(TAG, "Write header[%d]: %s", client->header_index, client->request->buffer->data);
|
|
|
|
client->data_write_left = wlen;
|
|
client->data_written_index = 0;
|
|
while (client->data_write_left > 0) {
|
|
int wret = esp_transport_write(client->transport, client->request->buffer->data + client->data_written_index, client->data_write_left, client->timeout_ms);
|
|
if (wret <= 0) {
|
|
ESP_LOGE(TAG, "Error write request");
|
|
esp_http_client_close(client);
|
|
return ESP_ERR_HTTP_WRITE_DATA;
|
|
}
|
|
client->data_write_left -= wret;
|
|
client->data_written_index += wret;
|
|
}
|
|
wlen = client->buffer_size;
|
|
}
|
|
|
|
client->data_written_index = 0;
|
|
client->data_write_left = client->post_len;
|
|
http_dispatch_event(client, HTTP_EVENT_HEADER_SENT, NULL, 0);
|
|
client->state = HTTP_STATE_REQ_COMPLETE_HEADER;
|
|
return ESP_OK;
|
|
}
|
|
|
|
static esp_err_t esp_http_client_send_post_data(esp_http_client_handle_t client)
|
|
{
|
|
if (client->state != HTTP_STATE_REQ_COMPLETE_HEADER) {
|
|
ESP_LOGE(TAG, "Invalid state");
|
|
return ESP_ERR_INVALID_STATE;
|
|
}
|
|
if (!(client->post_data && client->post_len)) {
|
|
goto success;
|
|
}
|
|
|
|
int wret = esp_http_client_write(client, client->post_data + client->data_written_index, client->data_write_left);
|
|
if (wret < 0) {
|
|
return wret;
|
|
}
|
|
client->data_write_left -= wret;
|
|
client->data_written_index += wret;
|
|
|
|
if (client->data_write_left <= 0) {
|
|
goto success;
|
|
} else {
|
|
return ESP_ERR_HTTP_WRITE_DATA;
|
|
}
|
|
|
|
success:
|
|
client->state = HTTP_STATE_REQ_COMPLETE_DATA;
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t esp_http_client_open(esp_http_client_handle_t client, int write_len)
|
|
{
|
|
client->post_len = write_len;
|
|
esp_err_t err;
|
|
if ((err = esp_http_client_connect(client)) != ESP_OK) {
|
|
return err;
|
|
}
|
|
if ((err = esp_http_client_request_send(client, write_len)) != ESP_OK) {
|
|
return err;
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
int esp_http_client_write(esp_http_client_handle_t client, const char *buffer, int len)
|
|
{
|
|
if (client->state < HTTP_STATE_REQ_COMPLETE_HEADER) {
|
|
return ESP_FAIL;
|
|
}
|
|
|
|
int wlen = 0, widx = 0;
|
|
while (len > 0) {
|
|
wlen = esp_transport_write(client->transport, buffer + widx, len, client->timeout_ms);
|
|
/* client->async_block is initialised in case of non-blocking IO, and in this case we return how
|
|
much ever data was written by the esp_transport_write() API. */
|
|
if (client->is_async || wlen <= 0) {
|
|
return wlen;
|
|
}
|
|
widx += wlen;
|
|
len -= wlen;
|
|
}
|
|
return widx;
|
|
}
|
|
|
|
esp_err_t esp_http_client_close(esp_http_client_handle_t client)
|
|
{
|
|
if (client->state >= HTTP_STATE_INIT) {
|
|
http_dispatch_event(client, HTTP_EVENT_DISCONNECTED, NULL, 0);
|
|
client->state = HTTP_STATE_INIT;
|
|
return esp_transport_close(client->transport);
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t esp_http_client_set_post_field(esp_http_client_handle_t client, const char *data, int len)
|
|
{
|
|
esp_err_t err = ESP_OK;
|
|
client->post_data = (char *)data;
|
|
client->post_len = len;
|
|
ESP_LOGD(TAG, "set post file length = %d", len);
|
|
if (client->post_data) {
|
|
char *value = NULL;
|
|
if ((err = esp_http_client_get_header(client, "Content-Type", &value)) != ESP_OK) {
|
|
return err;
|
|
}
|
|
if (value == NULL) {
|
|
err = esp_http_client_set_header(client, "Content-Type", "application/x-www-form-urlencoded");
|
|
}
|
|
} else {
|
|
client->post_len = 0;
|
|
err = esp_http_client_set_header(client, "Content-Type", NULL);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int esp_http_client_get_post_field(esp_http_client_handle_t client, char **data)
|
|
{
|
|
if (client->post_data) {
|
|
*data = client->post_data;
|
|
return client->post_len;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int esp_http_client_get_status_code(esp_http_client_handle_t client)
|
|
{
|
|
return client->response->status_code;
|
|
}
|
|
|
|
int esp_http_client_get_content_length(esp_http_client_handle_t client)
|
|
{
|
|
return client->response->content_length;
|
|
}
|
|
|
|
bool esp_http_client_is_chunked_response(esp_http_client_handle_t client)
|
|
{
|
|
return client->response->is_chunked;
|
|
}
|
|
|
|
esp_http_client_transport_t esp_http_client_get_transport_type(esp_http_client_handle_t client)
|
|
{
|
|
if (!strcasecmp(client->connection_info.scheme, "https") ) {
|
|
return HTTP_TRANSPORT_OVER_SSL;
|
|
} else if (!strcasecmp(client->connection_info.scheme, "http")) {
|
|
return HTTP_TRANSPORT_OVER_TCP;
|
|
} else {
|
|
return HTTP_TRANSPORT_UNKNOWN;
|
|
}
|
|
}
|