[457] | 1 | /**
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| 2 | * @file
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| 3 | * HTTP client
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2018 Simon Goldschmidt <goldsimon@gmx.de>
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| 8 | * All rights reserved.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without modification,
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| 11 | * are permitted provided that the following conditions are met:
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| 12 | *
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| 13 | * 1. Redistributions of source code must retain the above copyright notice,
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| 14 | * this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 16 | * this list of conditions and the following disclaimer in the documentation
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| 17 | * and/or other materials provided with the distribution.
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| 18 | * 3. The name of the author may not be used to endorse or promote products
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| 19 | * derived from this software without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 30 | * OF SUCH DAMAGE.
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| 31 | *
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| 32 | * This file is part of the lwIP TCP/IP stack.
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| 33 | *
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| 34 | * Author: Simon Goldschmidt <goldsimon@gmx.de>
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| 35 | */
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| 36 |
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| 37 | /**
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| 38 | * @defgroup httpc HTTP client
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| 39 | * @ingroup apps
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| 40 | * @todo:
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| 41 | * - persistent connections
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| 42 | * - select outgoing http version
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| 43 | * - optionally follow redirect
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| 44 | * - check request uri for invalid characters? (e.g. encode spaces)
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| 45 | * - IPv6 support
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| 46 | */
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| 47 |
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| 48 | #include "lwip/apps/http_client.h"
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| 49 |
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| 50 | #include "lwip/altcp_tcp.h"
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| 51 | #include "lwip/dns.h"
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| 52 | #include "lwip/debug.h"
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| 53 | #include "lwip/mem.h"
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| 54 | #include "lwip/altcp_tls.h"
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| 55 | #include "lwip/init.h"
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| 56 |
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| 57 | #include <stdio.h>
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| 58 | #include <stdlib.h>
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| 59 | #include <string.h>
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| 60 |
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| 61 | #if LWIP_TCP && LWIP_CALLBACK_API
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| 62 |
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| 63 | /**
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| 64 | * HTTPC_DEBUG: Enable debugging for HTTP client.
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| 65 | */
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| 66 | #ifndef HTTPC_DEBUG
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| 67 | #define HTTPC_DEBUG LWIP_DBG_OFF
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| 68 | #endif
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| 69 |
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| 70 | /** Set this to 1 to keep server name and uri in request state */
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| 71 | #ifndef HTTPC_DEBUG_REQUEST
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| 72 | #define HTTPC_DEBUG_REQUEST 0
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| 73 | #endif
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| 74 |
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| 75 | /** This string is passed in the HTTP header as "User-Agent: " */
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| 76 | #ifndef HTTPC_CLIENT_AGENT
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| 77 | #define HTTPC_CLIENT_AGENT "lwIP/" LWIP_VERSION_STRING " (http://savannah.nongnu.org/projects/lwip)"
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| 78 | #endif
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| 79 |
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| 80 | /* the various debug levels for this file */
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| 81 | #define HTTPC_DEBUG_TRACE (HTTPC_DEBUG | LWIP_DBG_TRACE)
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| 82 | #define HTTPC_DEBUG_STATE (HTTPC_DEBUG | LWIP_DBG_STATE)
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| 83 | #define HTTPC_DEBUG_WARN (HTTPC_DEBUG | LWIP_DBG_LEVEL_WARNING)
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| 84 | #define HTTPC_DEBUG_WARN_STATE (HTTPC_DEBUG | LWIP_DBG_LEVEL_WARNING | LWIP_DBG_STATE)
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| 85 | #define HTTPC_DEBUG_SERIOUS (HTTPC_DEBUG | LWIP_DBG_LEVEL_SERIOUS)
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| 86 |
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| 87 | #define HTTPC_POLL_INTERVAL 1
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| 88 | #define HTTPC_POLL_TIMEOUT 30 /* 15 seconds */
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| 89 |
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| 90 | #define HTTPC_CONTENT_LEN_INVALID 0xFFFFFFFF
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| 91 |
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| 92 | /* GET request basic */
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| 93 | #define HTTPC_REQ_11 "GET %s HTTP/1.1\r\n" /* URI */\
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| 94 | "User-Agent: %s\r\n" /* User-Agent */ \
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| 95 | "Accept: */*\r\n" \
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| 96 | "Connection: Close\r\n" /* we don't support persistent connections, yet */ \
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| 97 | "\r\n"
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| 98 | #define HTTPC_REQ_11_FORMAT(uri) HTTPC_REQ_11, uri, HTTPC_CLIENT_AGENT
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| 99 |
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| 100 | /* GET request with host */
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| 101 | #define HTTPC_REQ_11_HOST "GET %s HTTP/1.1\r\n" /* URI */\
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| 102 | "User-Agent: %s\r\n" /* User-Agent */ \
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| 103 | "Accept: */*\r\n" \
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| 104 | "Host: %s\r\n" /* server name */ \
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| 105 | "Connection: Close\r\n" /* we don't support persistent connections, yet */ \
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| 106 | "\r\n"
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| 107 | #define HTTPC_REQ_11_HOST_FORMAT(uri, srv_name) HTTPC_REQ_11_HOST, uri, HTTPC_CLIENT_AGENT, srv_name
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| 108 |
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| 109 | /* GET request with proxy */
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| 110 | #define HTTPC_REQ_11_PROXY "GET http://%s%s HTTP/1.1\r\n" /* HOST, URI */\
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| 111 | "User-Agent: %s\r\n" /* User-Agent */ \
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| 112 | "Accept: */*\r\n" \
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| 113 | "Host: %s\r\n" /* server name */ \
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| 114 | "Connection: Close\r\n" /* we don't support persistent connections, yet */ \
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| 115 | "\r\n"
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| 116 | #define HTTPC_REQ_11_PROXY_FORMAT(host, uri, srv_name) HTTPC_REQ_11_PROXY, host, uri, HTTPC_CLIENT_AGENT, srv_name
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| 117 |
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| 118 | /* GET request with proxy (non-default server port) */
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| 119 | #define HTTPC_REQ_11_PROXY_PORT "GET http://%s:%d%s HTTP/1.1\r\n" /* HOST, host-port, URI */\
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| 120 | "User-Agent: %s\r\n" /* User-Agent */ \
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| 121 | "Accept: */*\r\n" \
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| 122 | "Host: %s\r\n" /* server name */ \
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| 123 | "Connection: Close\r\n" /* we don't support persistent connections, yet */ \
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| 124 | "\r\n"
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| 125 | #define HTTPC_REQ_11_PROXY_PORT_FORMAT(host, host_port, uri, srv_name) HTTPC_REQ_11_PROXY_PORT, host, host_port, uri, HTTPC_CLIENT_AGENT, srv_name
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| 126 |
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| 127 | typedef enum ehttpc_parse_state {
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| 128 | HTTPC_PARSE_WAIT_FIRST_LINE = 0,
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| 129 | HTTPC_PARSE_WAIT_HEADERS,
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| 130 | HTTPC_PARSE_RX_DATA
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| 131 | } httpc_parse_state_t;
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| 132 |
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| 133 | typedef struct _httpc_state
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| 134 | {
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| 135 | struct altcp_pcb* pcb;
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| 136 | ip_addr_t remote_addr;
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| 137 | u16_t remote_port;
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| 138 | int timeout_ticks;
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| 139 | struct pbuf *request;
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| 140 | struct pbuf *rx_hdrs;
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| 141 | u16_t rx_http_version;
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| 142 | u16_t rx_status;
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| 143 | altcp_recv_fn recv_fn;
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| 144 | const httpc_connection_t *conn_settings;
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| 145 | void* callback_arg;
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| 146 | u32_t rx_content_len;
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| 147 | u32_t hdr_content_len;
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| 148 | httpc_parse_state_t parse_state;
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| 149 | #if HTTPC_DEBUG_REQUEST
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| 150 | char* server_name;
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| 151 | char* uri;
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| 152 | #endif
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| 153 | } httpc_state_t;
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| 154 |
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| 155 | /** Free http client state and deallocate all resources within */
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| 156 | static err_t
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| 157 | httpc_free_state(httpc_state_t* req)
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| 158 | {
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| 159 | struct altcp_pcb* tpcb;
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| 160 |
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| 161 | if (req->request != NULL) {
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| 162 | pbuf_free(req->request);
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| 163 | req->request = NULL;
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| 164 | }
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| 165 | if (req->rx_hdrs != NULL) {
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| 166 | pbuf_free(req->rx_hdrs);
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| 167 | req->rx_hdrs = NULL;
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| 168 | }
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| 169 |
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| 170 | tpcb = req->pcb;
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| 171 | mem_free(req);
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| 172 | req = NULL;
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| 173 |
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| 174 | if (tpcb != NULL) {
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| 175 | err_t r;
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| 176 | altcp_arg(tpcb, NULL);
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| 177 | altcp_recv(tpcb, NULL);
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| 178 | altcp_err(tpcb, NULL);
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| 179 | altcp_poll(tpcb, NULL, 0);
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| 180 | altcp_sent(tpcb, NULL);
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| 181 | r = altcp_close(tpcb);
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| 182 | if (r != ERR_OK) {
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| 183 | altcp_abort(tpcb);
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| 184 | return ERR_ABRT;
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| 185 | }
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| 186 | }
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| 187 | return ERR_OK;
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| 188 | }
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| 189 |
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| 190 | /** Close the connection: call finished callback and free the state */
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| 191 | static err_t
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| 192 | httpc_close(httpc_state_t* req, httpc_result_t result, u32_t server_response, err_t err)
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| 193 | {
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| 194 | if (req != NULL) {
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| 195 | if (req->conn_settings != NULL) {
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| 196 | if (req->conn_settings->result_fn != NULL) {
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| 197 | req->conn_settings->result_fn(req->callback_arg, result, req->rx_content_len, server_response, err);
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| 198 | }
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| 199 | }
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| 200 | return httpc_free_state(req);
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| 201 | }
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| 202 | return ERR_OK;
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| 203 | }
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| 204 |
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| 205 | /** Parse http header response line 1 */
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| 206 | static err_t
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| 207 | http_parse_response_status(struct pbuf *p, u16_t *http_version, u16_t *http_status, u16_t *http_status_str_offset)
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| 208 | {
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| 209 | u16_t end1 = pbuf_memfind(p, "\r\n", 2, 0);
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| 210 | if (end1 != 0xFFFF) {
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| 211 | /* get parts of first line */
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| 212 | u16_t space1, space2;
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| 213 | space1 = pbuf_memfind(p, " ", 1, 0);
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| 214 | if (space1 != 0xFFFF) {
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| 215 | if ((pbuf_memcmp(p, 0, "HTTP/", 5) == 0) && (pbuf_get_at(p, 6) == '.')) {
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| 216 | char status_num[10];
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| 217 | size_t status_num_len;
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| 218 | /* parse http version */
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| 219 | u16_t version = pbuf_get_at(p, 5) - '0';
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| 220 | version <<= 8;
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| 221 | version |= pbuf_get_at(p, 7) - '0';
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| 222 | *http_version = version;
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| 223 |
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| 224 | /* parse http status number */
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| 225 | space2 = pbuf_memfind(p, " ", 1, space1 + 1);
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| 226 | if (space2 != 0xFFFF) {
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| 227 | *http_status_str_offset = space2 + 1;
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| 228 | status_num_len = space2 - space1 - 1;
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| 229 | } else {
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| 230 | status_num_len = end1 - space1 - 1;
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| 231 | }
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| 232 | memset(status_num, 0, sizeof(status_num));
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| 233 | if (pbuf_copy_partial(p, status_num, (u16_t)status_num_len, space1 + 1) == status_num_len) {
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| 234 | int status = atoi(status_num);
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| 235 | if ((status > 0) && (status <= 0xFFFF)) {
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| 236 | *http_status = (u16_t)status;
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| 237 | return ERR_OK;
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| 238 | }
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| 239 | }
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| 240 | }
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| 241 | }
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| 242 | }
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| 243 | return ERR_VAL;
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| 244 | }
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| 245 |
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| 246 | /** Wait for all headers to be received, return its length and content-length (if available) */
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| 247 | static err_t
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| 248 | http_wait_headers(struct pbuf *p, u32_t *content_length, u16_t *total_header_len)
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| 249 | {
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| 250 | u16_t end1 = pbuf_memfind(p, "\r\n\r\n", 4, 0);
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| 251 | if (end1 < (0xFFFF - 2)) {
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| 252 | /* all headers received */
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| 253 | /* check if we have a content length (@todo: case insensitive?) */
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| 254 | u16_t content_len_hdr;
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| 255 | *content_length = HTTPC_CONTENT_LEN_INVALID;
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| 256 | *total_header_len = end1 + 4;
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| 257 |
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| 258 | content_len_hdr = pbuf_memfind(p, "Content-Length: ", 16, 0);
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| 259 | if (content_len_hdr != 0xFFFF) {
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| 260 | u16_t content_len_line_end = pbuf_memfind(p, "\r\n", 2, content_len_hdr);
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| 261 | if (content_len_line_end != 0xFFFF) {
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| 262 | char content_len_num[16];
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| 263 | u16_t content_len_num_len = (u16_t)(content_len_line_end - content_len_hdr - 16);
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| 264 | memset(content_len_num, 0, sizeof(content_len_num));
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| 265 | if (pbuf_copy_partial(p, content_len_num, content_len_num_len, content_len_hdr + 16) == content_len_num_len) {
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| 266 | int len = atoi(content_len_num);
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| 267 | if ((len >= 0) && ((u32_t)len < HTTPC_CONTENT_LEN_INVALID)) {
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| 268 | *content_length = (u32_t)len;
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| 269 | }
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| 270 | }
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| 271 | }
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| 272 | }
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| 273 | return ERR_OK;
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| 274 | }
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| 275 | return ERR_VAL;
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| 276 | }
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| 277 |
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| 278 | /** http client tcp recv callback */
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| 279 | static err_t
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| 280 | httpc_tcp_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t r)
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| 281 | {
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| 282 | httpc_state_t* req = (httpc_state_t*)arg;
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| 283 | LWIP_UNUSED_ARG(r);
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| 284 |
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| 285 | if (p == NULL) {
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| 286 | httpc_result_t result;
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| 287 | if (req->parse_state != HTTPC_PARSE_RX_DATA) {
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| 288 | /* did not get RX data yet */
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| 289 | result = HTTPC_RESULT_ERR_CLOSED;
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| 290 | } else if ((req->hdr_content_len != HTTPC_CONTENT_LEN_INVALID) &&
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| 291 | (req->hdr_content_len != req->rx_content_len)) {
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| 292 | /* header has been received with content length but not all data received */
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| 293 | result = HTTPC_RESULT_ERR_CONTENT_LEN;
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| 294 | } else {
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| 295 | /* receiving data and either all data received or no content length header */
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| 296 | result = HTTPC_RESULT_OK;
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| 297 | }
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| 298 | return httpc_close(req, result, req->rx_status, ERR_OK);
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| 299 | }
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| 300 | if (req->parse_state != HTTPC_PARSE_RX_DATA) {
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| 301 | if (req->rx_hdrs == NULL) {
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| 302 | req->rx_hdrs = p;
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| 303 | } else {
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| 304 | pbuf_cat(req->rx_hdrs, p);
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| 305 | }
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| 306 | if (req->parse_state == HTTPC_PARSE_WAIT_FIRST_LINE) {
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| 307 | u16_t status_str_off;
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| 308 | err_t err = http_parse_response_status(req->rx_hdrs, &req->rx_http_version, &req->rx_status, &status_str_off);
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| 309 | if (err == ERR_OK) {
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| 310 | /* don't care status string */
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| 311 | req->parse_state = HTTPC_PARSE_WAIT_HEADERS;
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| 312 | }
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| 313 | }
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| 314 | if (req->parse_state == HTTPC_PARSE_WAIT_HEADERS) {
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| 315 | u16_t total_header_len;
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| 316 | err_t err = http_wait_headers(req->rx_hdrs, &req->hdr_content_len, &total_header_len);
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| 317 | if (err == ERR_OK) {
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| 318 | struct pbuf *q;
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| 319 | /* full header received, send window update for header bytes and call into client callback */
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| 320 | altcp_recved(pcb, total_header_len);
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| 321 | if (req->conn_settings) {
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| 322 | if (req->conn_settings->headers_done_fn) {
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| 323 | err = req->conn_settings->headers_done_fn(req, req->callback_arg, req->rx_hdrs, total_header_len, req->hdr_content_len);
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| 324 | if (err != ERR_OK) {
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| 325 | return httpc_close(req, HTTPC_RESULT_LOCAL_ABORT, req->rx_status, err);
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| 326 | }
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| 327 | }
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| 328 | }
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| 329 | /* hide header bytes in pbuf */
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| 330 | q = pbuf_free_header(req->rx_hdrs, total_header_len);
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| 331 | p = q;
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| 332 | req->rx_hdrs = NULL;
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| 333 | /* go on with data */
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| 334 | req->parse_state = HTTPC_PARSE_RX_DATA;
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| 335 | }
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| 336 | }
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| 337 | }
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| 338 | if ((p != NULL) && (req->parse_state == HTTPC_PARSE_RX_DATA)) {
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| 339 | req->rx_content_len += p->tot_len;
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| 340 | if (req->recv_fn != NULL) {
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| 341 | /* directly return here: the connection migth already be aborted from the callback! */
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| 342 | return req->recv_fn(req->callback_arg, pcb, p, r);
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| 343 | } else {
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| 344 | altcp_recved(pcb, p->tot_len);
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| 345 | pbuf_free(p);
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| 346 | }
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| 347 | }
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| 348 | return ERR_OK;
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| 349 | }
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| 350 |
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| 351 | /** http client tcp err callback */
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| 352 | static void
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| 353 | httpc_tcp_err(void *arg, err_t err)
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| 354 | {
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| 355 | httpc_state_t* req = (httpc_state_t*)arg;
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| 356 | if (req != NULL) {
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| 357 | /* pcb has already been deallocated */
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| 358 | req->pcb = NULL;
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| 359 | httpc_close(req, HTTPC_RESULT_ERR_CLOSED, 0, err);
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| 360 | }
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| 361 | }
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| 362 |
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| 363 | /** http client tcp poll callback */
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| 364 | static err_t
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| 365 | httpc_tcp_poll(void *arg, struct altcp_pcb *pcb)
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| 366 | {
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| 367 | /* implement timeout */
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| 368 | httpc_state_t* req = (httpc_state_t*)arg;
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| 369 | LWIP_UNUSED_ARG(pcb);
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| 370 | if (req != NULL) {
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| 371 | if (req->timeout_ticks) {
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| 372 | req->timeout_ticks--;
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| 373 | }
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| 374 | if (!req->timeout_ticks) {
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| 375 | return httpc_close(req, HTTPC_RESULT_ERR_TIMEOUT, 0, ERR_OK);
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| 376 | }
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| 377 | }
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| 378 | return ERR_OK;
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| 379 | }
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| 380 |
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| 381 | /** http client tcp sent callback */
|
---|
| 382 | static err_t
|
---|
| 383 | httpc_tcp_sent(void *arg, struct altcp_pcb *pcb, u16_t len)
|
---|
| 384 | {
|
---|
| 385 | /* nothing to do here for now */
|
---|
| 386 | LWIP_UNUSED_ARG(arg);
|
---|
| 387 | LWIP_UNUSED_ARG(pcb);
|
---|
| 388 | LWIP_UNUSED_ARG(len);
|
---|
| 389 | return ERR_OK;
|
---|
| 390 | }
|
---|
| 391 |
|
---|
| 392 | /** http client tcp connected callback */
|
---|
| 393 | static err_t
|
---|
| 394 | httpc_tcp_connected(void *arg, struct altcp_pcb *pcb, err_t err)
|
---|
| 395 | {
|
---|
| 396 | err_t r;
|
---|
| 397 | httpc_state_t* req = (httpc_state_t*)arg;
|
---|
| 398 | LWIP_UNUSED_ARG(pcb);
|
---|
| 399 | LWIP_UNUSED_ARG(err);
|
---|
| 400 |
|
---|
| 401 | /* send request; last char is zero termination */
|
---|
| 402 | r = altcp_write(req->pcb, req->request->payload, req->request->len - 1, TCP_WRITE_FLAG_COPY);
|
---|
| 403 | if (r != ERR_OK) {
|
---|
| 404 | /* could not write the single small request -> fail, don't retry */
|
---|
| 405 | return httpc_close(req, HTTPC_RESULT_ERR_MEM, 0, r);
|
---|
| 406 | }
|
---|
| 407 | /* everything written, we can free the request */
|
---|
| 408 | pbuf_free(req->request);
|
---|
| 409 | req->request = NULL;
|
---|
| 410 |
|
---|
| 411 | altcp_output(req->pcb);
|
---|
| 412 | return ERR_OK;
|
---|
| 413 | }
|
---|
| 414 |
|
---|
| 415 | /** Start the http request when the server IP addr is known */
|
---|
| 416 | static err_t
|
---|
| 417 | httpc_get_internal_addr(httpc_state_t* req, const ip_addr_t *ipaddr)
|
---|
| 418 | {
|
---|
| 419 | err_t err;
|
---|
| 420 | LWIP_ASSERT("req != NULL", req != NULL);
|
---|
| 421 |
|
---|
| 422 | if (&req->remote_addr != ipaddr) {
|
---|
| 423 | /* fill in remote addr if called externally */
|
---|
| 424 | req->remote_addr = *ipaddr;
|
---|
| 425 | }
|
---|
| 426 |
|
---|
| 427 | err = altcp_connect(req->pcb, &req->remote_addr, req->remote_port, httpc_tcp_connected);
|
---|
| 428 | if (err == ERR_OK) {
|
---|
| 429 | return ERR_OK;
|
---|
| 430 | }
|
---|
| 431 | LWIP_DEBUGF(HTTPC_DEBUG_WARN_STATE, ("tcp_connect failed: %d\n", (int)err));
|
---|
| 432 | return err;
|
---|
| 433 | }
|
---|
| 434 |
|
---|
| 435 | #if LWIP_DNS
|
---|
| 436 | /** DNS callback
|
---|
| 437 | * If ipaddr is non-NULL, resolving succeeded and the request can be sent, otherwise it failed.
|
---|
| 438 | */
|
---|
| 439 | static void
|
---|
| 440 | httpc_dns_found(const char* hostname, const ip_addr_t *ipaddr, void *arg)
|
---|
| 441 | {
|
---|
| 442 | httpc_state_t* req = (httpc_state_t*)arg;
|
---|
| 443 | err_t err;
|
---|
| 444 | httpc_result_t result;
|
---|
| 445 |
|
---|
| 446 | LWIP_UNUSED_ARG(hostname);
|
---|
| 447 |
|
---|
| 448 | if (ipaddr != NULL) {
|
---|
| 449 | err = httpc_get_internal_addr(req, ipaddr);
|
---|
| 450 | if (err == ERR_OK) {
|
---|
| 451 | return;
|
---|
| 452 | }
|
---|
| 453 | result = HTTPC_RESULT_ERR_CONNECT;
|
---|
| 454 | } else {
|
---|
| 455 | LWIP_DEBUGF(HTTPC_DEBUG_WARN_STATE, ("httpc_dns_found: failed to resolve hostname: %s\n",
|
---|
| 456 | hostname));
|
---|
| 457 | result = HTTPC_RESULT_ERR_HOSTNAME;
|
---|
| 458 | err = ERR_ARG;
|
---|
| 459 | }
|
---|
| 460 | httpc_close(req, result, 0, err);
|
---|
| 461 | }
|
---|
| 462 | #endif /* LWIP_DNS */
|
---|
| 463 |
|
---|
| 464 | /** Start the http request after converting 'server_name' to ip address (DNS or address string) */
|
---|
| 465 | static err_t
|
---|
| 466 | httpc_get_internal_dns(httpc_state_t* req, const char* server_name)
|
---|
| 467 | {
|
---|
| 468 | err_t err;
|
---|
| 469 | LWIP_ASSERT("req != NULL", req != NULL);
|
---|
| 470 |
|
---|
| 471 | #if LWIP_DNS
|
---|
| 472 | err = dns_gethostbyname(server_name, &req->remote_addr, httpc_dns_found, req);
|
---|
| 473 | #else
|
---|
| 474 | err = ipaddr_aton(server_name, &req->remote_addr) ? ERR_OK : ERR_ARG;
|
---|
| 475 | #endif
|
---|
| 476 |
|
---|
| 477 | if (err == ERR_OK) {
|
---|
| 478 | /* cached or IP-string */
|
---|
| 479 | err = httpc_get_internal_addr(req, &req->remote_addr);
|
---|
| 480 | } else if (err == ERR_INPROGRESS) {
|
---|
| 481 | return ERR_OK;
|
---|
| 482 | }
|
---|
| 483 | return err;
|
---|
| 484 | }
|
---|
| 485 |
|
---|
| 486 | static int
|
---|
| 487 | httpc_create_request_string(const httpc_connection_t *settings, const char* server_name, int server_port, const char* uri,
|
---|
| 488 | int use_host, char *buffer, size_t buffer_size)
|
---|
| 489 | {
|
---|
| 490 | if (settings->use_proxy) {
|
---|
| 491 | LWIP_ASSERT("server_name != NULL", server_name != NULL);
|
---|
| 492 | if (server_port != HTTP_DEFAULT_PORT) {
|
---|
| 493 | return snprintf(buffer, buffer_size, HTTPC_REQ_11_PROXY_PORT_FORMAT(server_name, server_port, uri, server_name));
|
---|
| 494 | } else {
|
---|
| 495 | return snprintf(buffer, buffer_size, HTTPC_REQ_11_PROXY_FORMAT(server_name, uri, server_name));
|
---|
| 496 | }
|
---|
| 497 | } else if (use_host) {
|
---|
| 498 | LWIP_ASSERT("server_name != NULL", server_name != NULL);
|
---|
| 499 | return snprintf(buffer, buffer_size, HTTPC_REQ_11_HOST_FORMAT(uri, server_name));
|
---|
| 500 | } else {
|
---|
| 501 | return snprintf(buffer, buffer_size, HTTPC_REQ_11_FORMAT(uri));
|
---|
| 502 | }
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 | /** Initialize the connection struct */
|
---|
| 506 | static err_t
|
---|
| 507 | httpc_init_connection_common(httpc_state_t **connection, const httpc_connection_t *settings, const char* server_name,
|
---|
| 508 | u16_t server_port, const char* uri, altcp_recv_fn recv_fn, void* callback_arg, int use_host)
|
---|
| 509 | {
|
---|
| 510 | size_t alloc_len;
|
---|
| 511 | mem_size_t mem_alloc_len;
|
---|
| 512 | int req_len, req_len2;
|
---|
| 513 | httpc_state_t *req;
|
---|
| 514 | #if HTTPC_DEBUG_REQUEST
|
---|
| 515 | size_t server_name_len, uri_len;
|
---|
| 516 | #endif
|
---|
| 517 |
|
---|
| 518 | LWIP_ASSERT("uri != NULL", uri != NULL);
|
---|
| 519 |
|
---|
| 520 | /* get request len */
|
---|
| 521 | req_len = httpc_create_request_string(settings, server_name, server_port, uri, use_host, NULL, 0);
|
---|
| 522 | if ((req_len < 0) || (req_len > 0xFFFF)) {
|
---|
| 523 | return ERR_VAL;
|
---|
| 524 | }
|
---|
| 525 | /* alloc state and request in one block */
|
---|
| 526 | alloc_len = sizeof(httpc_state_t);
|
---|
| 527 | #if HTTPC_DEBUG_REQUEST
|
---|
| 528 | server_name_len = server_name ? strlen(server_name) : 0;
|
---|
| 529 | uri_len = strlen(uri);
|
---|
| 530 | alloc_len += server_name_len + 1 + uri_len + 1;
|
---|
| 531 | #endif
|
---|
| 532 | mem_alloc_len = (mem_size_t)alloc_len;
|
---|
| 533 | if ((mem_alloc_len < alloc_len) || (req_len + 1 > 0xFFFF)) {
|
---|
| 534 | return ERR_VAL;
|
---|
| 535 | }
|
---|
| 536 |
|
---|
| 537 | req = (httpc_state_t*)mem_malloc((mem_size_t)alloc_len);
|
---|
| 538 | if(req == NULL) {
|
---|
| 539 | return ERR_MEM;
|
---|
| 540 | }
|
---|
| 541 | memset(req, 0, sizeof(httpc_state_t));
|
---|
| 542 | req->timeout_ticks = HTTPC_POLL_TIMEOUT;
|
---|
| 543 | req->request = pbuf_alloc(PBUF_RAW, (u16_t)(req_len + 1), PBUF_RAM);
|
---|
| 544 | if (req->request == NULL) {
|
---|
| 545 | httpc_free_state(req);
|
---|
| 546 | return ERR_MEM;
|
---|
| 547 | }
|
---|
| 548 | if (req->request->next != NULL) {
|
---|
| 549 | /* need a pbuf in one piece */
|
---|
| 550 | httpc_free_state(req);
|
---|
| 551 | return ERR_MEM;
|
---|
| 552 | }
|
---|
| 553 | req->hdr_content_len = HTTPC_CONTENT_LEN_INVALID;
|
---|
| 554 | #if HTTPC_DEBUG_REQUEST
|
---|
| 555 | req->server_name = (char*)(req + 1);
|
---|
| 556 | if (server_name) {
|
---|
| 557 | memcpy(req->server_name, server_name, server_name_len + 1);
|
---|
| 558 | }
|
---|
| 559 | req->uri = req->server_name + server_name_len + 1;
|
---|
| 560 | memcpy(req->uri, uri, uri_len + 1);
|
---|
| 561 | #endif
|
---|
| 562 | req->pcb = altcp_new(settings->altcp_allocator);
|
---|
| 563 | if(req->pcb == NULL) {
|
---|
| 564 | httpc_free_state(req);
|
---|
| 565 | return ERR_MEM;
|
---|
| 566 | }
|
---|
| 567 | req->remote_port = settings->use_proxy ? settings->proxy_port : server_port;
|
---|
| 568 | altcp_arg(req->pcb, req);
|
---|
| 569 | altcp_recv(req->pcb, httpc_tcp_recv);
|
---|
| 570 | altcp_err(req->pcb, httpc_tcp_err);
|
---|
| 571 | altcp_poll(req->pcb, httpc_tcp_poll, HTTPC_POLL_INTERVAL);
|
---|
| 572 | altcp_sent(req->pcb, httpc_tcp_sent);
|
---|
| 573 |
|
---|
| 574 | /* set up request buffer */
|
---|
| 575 | req_len2 = httpc_create_request_string(settings, server_name, server_port, uri, use_host,
|
---|
| 576 | (char *)req->request->payload, req_len + 1);
|
---|
| 577 | if (req_len2 != req_len) {
|
---|
| 578 | httpc_free_state(req);
|
---|
| 579 | return ERR_VAL;
|
---|
| 580 | }
|
---|
| 581 |
|
---|
| 582 | req->recv_fn = recv_fn;
|
---|
| 583 | req->conn_settings = settings;
|
---|
| 584 | req->callback_arg = callback_arg;
|
---|
| 585 |
|
---|
| 586 | *connection = req;
|
---|
| 587 | return ERR_OK;
|
---|
| 588 | }
|
---|
| 589 |
|
---|
| 590 | /**
|
---|
| 591 | * Initialize the connection struct
|
---|
| 592 | */
|
---|
| 593 | static err_t
|
---|
| 594 | httpc_init_connection(httpc_state_t **connection, const httpc_connection_t *settings, const char* server_name,
|
---|
| 595 | u16_t server_port, const char* uri, altcp_recv_fn recv_fn, void* callback_arg)
|
---|
| 596 | {
|
---|
| 597 | return httpc_init_connection_common(connection, settings, server_name, server_port, uri, recv_fn, callback_arg, 1);
|
---|
| 598 | }
|
---|
| 599 |
|
---|
| 600 |
|
---|
| 601 | /**
|
---|
| 602 | * Initialize the connection struct (from IP address)
|
---|
| 603 | */
|
---|
| 604 | static err_t
|
---|
| 605 | httpc_init_connection_addr(httpc_state_t **connection, const httpc_connection_t *settings,
|
---|
| 606 | const ip_addr_t* server_addr, u16_t server_port, const char* uri,
|
---|
| 607 | altcp_recv_fn recv_fn, void* callback_arg)
|
---|
| 608 | {
|
---|
| 609 | char *server_addr_str = ipaddr_ntoa(server_addr);
|
---|
| 610 | if (server_addr_str == NULL) {
|
---|
| 611 | return ERR_VAL;
|
---|
| 612 | }
|
---|
| 613 | return httpc_init_connection_common(connection, settings, server_addr_str, server_port, uri,
|
---|
| 614 | recv_fn, callback_arg, 1);
|
---|
| 615 | }
|
---|
| 616 |
|
---|
| 617 | /**
|
---|
| 618 | * @ingroup httpc
|
---|
| 619 | * HTTP client API: get a file by passing server IP address
|
---|
| 620 | *
|
---|
| 621 | * @param server_addr IP address of the server to connect
|
---|
| 622 | * @param port tcp port of the server
|
---|
| 623 | * @param uri uri to get from the server, remember leading "/"!
|
---|
| 624 | * @param settings connection settings (callbacks, proxy, etc.)
|
---|
| 625 | * @param recv_fn the http body (not the headers) are passed to this callback
|
---|
| 626 | * @param callback_arg argument passed to all the callbacks
|
---|
| 627 | * @param connection retreives the connection handle (to match in callbacks)
|
---|
| 628 | * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
|
---|
| 629 | * or an error code
|
---|
| 630 | */
|
---|
| 631 | err_t
|
---|
| 632 | httpc_get_file(const ip_addr_t* server_addr, u16_t port, const char* uri, const httpc_connection_t *settings,
|
---|
| 633 | altcp_recv_fn recv_fn, void* callback_arg, httpc_state_t **connection)
|
---|
| 634 | {
|
---|
| 635 | err_t err;
|
---|
| 636 | httpc_state_t* req;
|
---|
| 637 |
|
---|
| 638 | LWIP_ERROR("invalid parameters", (server_addr != NULL) && (uri != NULL) && (recv_fn != NULL), return ERR_ARG;);
|
---|
| 639 |
|
---|
| 640 | err = httpc_init_connection_addr(&req, settings, server_addr, port,
|
---|
| 641 | uri, recv_fn, callback_arg);
|
---|
| 642 | if (err != ERR_OK) {
|
---|
| 643 | return err;
|
---|
| 644 | }
|
---|
| 645 |
|
---|
| 646 | if (settings->use_proxy) {
|
---|
| 647 | err = httpc_get_internal_addr(req, &settings->proxy_addr);
|
---|
| 648 | } else {
|
---|
| 649 | err = httpc_get_internal_addr(req, server_addr);
|
---|
| 650 | }
|
---|
| 651 | if(err != ERR_OK) {
|
---|
| 652 | httpc_free_state(req);
|
---|
| 653 | return err;
|
---|
| 654 | }
|
---|
| 655 |
|
---|
| 656 | if (connection != NULL) {
|
---|
| 657 | *connection = req;
|
---|
| 658 | }
|
---|
| 659 | return ERR_OK;
|
---|
| 660 | }
|
---|
| 661 |
|
---|
| 662 | /**
|
---|
| 663 | * @ingroup httpc
|
---|
| 664 | * HTTP client API: get a file by passing server name as string (DNS name or IP address string)
|
---|
| 665 | *
|
---|
| 666 | * @param server_name server name as string (DNS name or IP address string)
|
---|
| 667 | * @param port tcp port of the server
|
---|
| 668 | * @param uri uri to get from the server, remember leading "/"!
|
---|
| 669 | * @param settings connection settings (callbacks, proxy, etc.)
|
---|
| 670 | * @param recv_fn the http body (not the headers) are passed to this callback
|
---|
| 671 | * @param callback_arg argument passed to all the callbacks
|
---|
| 672 | * @param connection retreives the connection handle (to match in callbacks)
|
---|
| 673 | * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
|
---|
| 674 | * or an error code
|
---|
| 675 | */
|
---|
| 676 | err_t
|
---|
| 677 | httpc_get_file_dns(const char* server_name, u16_t port, const char* uri, const httpc_connection_t *settings,
|
---|
| 678 | altcp_recv_fn recv_fn, void* callback_arg, httpc_state_t **connection)
|
---|
| 679 | {
|
---|
| 680 | err_t err;
|
---|
| 681 | httpc_state_t* req;
|
---|
| 682 |
|
---|
| 683 | LWIP_ERROR("invalid parameters", (server_name != NULL) && (uri != NULL) && (recv_fn != NULL), return ERR_ARG;);
|
---|
| 684 |
|
---|
| 685 | err = httpc_init_connection(&req, settings, server_name, port, uri, recv_fn, callback_arg);
|
---|
| 686 | if (err != ERR_OK) {
|
---|
| 687 | return err;
|
---|
| 688 | }
|
---|
| 689 |
|
---|
| 690 | if (settings->use_proxy) {
|
---|
| 691 | err = httpc_get_internal_addr(req, &settings->proxy_addr);
|
---|
| 692 | } else {
|
---|
| 693 | err = httpc_get_internal_dns(req, server_name);
|
---|
| 694 | }
|
---|
| 695 | if(err != ERR_OK) {
|
---|
| 696 | httpc_free_state(req);
|
---|
| 697 | return err;
|
---|
| 698 | }
|
---|
| 699 |
|
---|
| 700 | if (connection != NULL) {
|
---|
| 701 | *connection = req;
|
---|
| 702 | }
|
---|
| 703 | return ERR_OK;
|
---|
| 704 | }
|
---|
| 705 |
|
---|
| 706 | #if LWIP_HTTPC_HAVE_FILE_IO
|
---|
| 707 | /* Implementation to disk via fopen/fwrite/fclose follows */
|
---|
| 708 |
|
---|
| 709 | typedef struct _httpc_filestate
|
---|
| 710 | {
|
---|
| 711 | const char* local_file_name;
|
---|
| 712 | FILE *file;
|
---|
| 713 | httpc_connection_t settings;
|
---|
| 714 | const httpc_connection_t *client_settings;
|
---|
| 715 | void *callback_arg;
|
---|
| 716 | } httpc_filestate_t;
|
---|
| 717 |
|
---|
| 718 | static void httpc_fs_result(void *arg, httpc_result_t httpc_result, u32_t rx_content_len,
|
---|
| 719 | u32_t srv_res, err_t err);
|
---|
| 720 |
|
---|
| 721 | /** Initalize http client state for download to file system */
|
---|
| 722 | static err_t
|
---|
| 723 | httpc_fs_init(httpc_filestate_t **filestate_out, const char* local_file_name,
|
---|
| 724 | const httpc_connection_t *settings, void* callback_arg)
|
---|
| 725 | {
|
---|
| 726 | httpc_filestate_t *filestate;
|
---|
| 727 | size_t file_len, alloc_len;
|
---|
| 728 | FILE *f;
|
---|
| 729 |
|
---|
| 730 | file_len = strlen(local_file_name);
|
---|
| 731 | alloc_len = sizeof(httpc_filestate_t) + file_len + 1;
|
---|
| 732 |
|
---|
| 733 | filestate = (httpc_filestate_t *)mem_malloc((mem_size_t)alloc_len);
|
---|
| 734 | if (filestate == NULL) {
|
---|
| 735 | return ERR_MEM;
|
---|
| 736 | }
|
---|
| 737 | memset(filestate, 0, sizeof(httpc_filestate_t));
|
---|
| 738 | filestate->local_file_name = (const char *)(filestate + 1);
|
---|
| 739 | memcpy((char *)(filestate + 1), local_file_name, file_len + 1);
|
---|
| 740 | filestate->file = NULL;
|
---|
| 741 | filestate->client_settings = settings;
|
---|
| 742 | filestate->callback_arg = callback_arg;
|
---|
| 743 | /* copy client settings but override result callback */
|
---|
| 744 | memcpy(&filestate->settings, settings, sizeof(httpc_connection_t));
|
---|
| 745 | filestate->settings.result_fn = httpc_fs_result;
|
---|
| 746 |
|
---|
| 747 | f = fopen(local_file_name, "wb");
|
---|
| 748 | if(f == NULL) {
|
---|
| 749 | /* could not open file */
|
---|
| 750 | mem_free(filestate);
|
---|
| 751 | return ERR_VAL;
|
---|
| 752 | }
|
---|
| 753 | filestate->file = f;
|
---|
| 754 | *filestate_out = filestate;
|
---|
| 755 | return ERR_OK;
|
---|
| 756 | }
|
---|
| 757 |
|
---|
| 758 | /** Free http client state for download to file system */
|
---|
| 759 | static void
|
---|
| 760 | httpc_fs_free(httpc_filestate_t *filestate)
|
---|
| 761 | {
|
---|
| 762 | if (filestate != NULL) {
|
---|
| 763 | if (filestate->file != NULL) {
|
---|
| 764 | fclose(filestate->file);
|
---|
| 765 | filestate->file = NULL;
|
---|
| 766 | }
|
---|
| 767 | mem_free(filestate);
|
---|
| 768 | }
|
---|
| 769 | }
|
---|
| 770 |
|
---|
| 771 | /** Connection closed (success or error) */
|
---|
| 772 | static void
|
---|
| 773 | httpc_fs_result(void *arg, httpc_result_t httpc_result, u32_t rx_content_len,
|
---|
| 774 | u32_t srv_res, err_t err)
|
---|
| 775 | {
|
---|
| 776 | httpc_filestate_t *filestate = (httpc_filestate_t *)arg;
|
---|
| 777 | if (filestate != NULL) {
|
---|
| 778 | if (filestate->client_settings->result_fn != NULL) {
|
---|
| 779 | filestate->client_settings->result_fn(filestate->callback_arg, httpc_result, rx_content_len,
|
---|
| 780 | srv_res, err);
|
---|
| 781 | }
|
---|
| 782 | httpc_fs_free(filestate);
|
---|
| 783 | }
|
---|
| 784 | }
|
---|
| 785 |
|
---|
| 786 | /** tcp recv callback */
|
---|
| 787 | static err_t
|
---|
| 788 | httpc_fs_tcp_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t err)
|
---|
| 789 | {
|
---|
| 790 | httpc_filestate_t *filestate = (httpc_filestate_t*)arg;
|
---|
| 791 | struct pbuf* q;
|
---|
| 792 | LWIP_UNUSED_ARG(err);
|
---|
| 793 |
|
---|
| 794 | LWIP_ASSERT("p != NULL", p != NULL);
|
---|
| 795 |
|
---|
| 796 | for (q = p; q != NULL; q = q->next) {
|
---|
| 797 | fwrite(q->payload, 1, q->len, filestate->file);
|
---|
| 798 | }
|
---|
| 799 | altcp_recved(pcb, p->tot_len);
|
---|
| 800 | pbuf_free(p);
|
---|
| 801 | return ERR_OK;
|
---|
| 802 | }
|
---|
| 803 |
|
---|
| 804 | /**
|
---|
| 805 | * @ingroup httpc
|
---|
| 806 | * HTTP client API: get a file to disk by passing server IP address
|
---|
| 807 | *
|
---|
| 808 | * @param server_addr IP address of the server to connect
|
---|
| 809 | * @param port tcp port of the server
|
---|
| 810 | * @param uri uri to get from the server, remember leading "/"!
|
---|
| 811 | * @param settings connection settings (callbacks, proxy, etc.)
|
---|
| 812 | * @param callback_arg argument passed to all the callbacks
|
---|
| 813 | * @param connection retreives the connection handle (to match in callbacks)
|
---|
| 814 | * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
|
---|
| 815 | * or an error code
|
---|
| 816 | */
|
---|
| 817 | err_t
|
---|
| 818 | httpc_get_file_to_disk(const ip_addr_t* server_addr, u16_t port, const char* uri, const httpc_connection_t *settings,
|
---|
| 819 | void* callback_arg, const char* local_file_name, httpc_state_t **connection)
|
---|
| 820 | {
|
---|
| 821 | err_t err;
|
---|
| 822 | httpc_state_t* req;
|
---|
| 823 | httpc_filestate_t *filestate;
|
---|
| 824 |
|
---|
| 825 | LWIP_ERROR("invalid parameters", (server_addr != NULL) && (uri != NULL) && (local_file_name != NULL), return ERR_ARG;);
|
---|
| 826 |
|
---|
| 827 | err = httpc_fs_init(&filestate, local_file_name, settings, callback_arg);
|
---|
| 828 | if (err != ERR_OK) {
|
---|
| 829 | return err;
|
---|
| 830 | }
|
---|
| 831 |
|
---|
| 832 | err = httpc_init_connection_addr(&req, &filestate->settings, server_addr, port,
|
---|
| 833 | uri, httpc_fs_tcp_recv, filestate);
|
---|
| 834 | if (err != ERR_OK) {
|
---|
| 835 | httpc_fs_free(filestate);
|
---|
| 836 | return err;
|
---|
| 837 | }
|
---|
| 838 |
|
---|
| 839 | if (settings->use_proxy) {
|
---|
| 840 | err = httpc_get_internal_addr(req, &settings->proxy_addr);
|
---|
| 841 | } else {
|
---|
| 842 | err = httpc_get_internal_addr(req, server_addr);
|
---|
| 843 | }
|
---|
| 844 | if(err != ERR_OK) {
|
---|
| 845 | httpc_fs_free(filestate);
|
---|
| 846 | httpc_free_state(req);
|
---|
| 847 | return err;
|
---|
| 848 | }
|
---|
| 849 |
|
---|
| 850 | if (connection != NULL) {
|
---|
| 851 | *connection = req;
|
---|
| 852 | }
|
---|
| 853 | return ERR_OK;
|
---|
| 854 | }
|
---|
| 855 |
|
---|
| 856 | /**
|
---|
| 857 | * @ingroup httpc
|
---|
| 858 | * HTTP client API: get a file to disk by passing server name as string (DNS name or IP address string)
|
---|
| 859 | *
|
---|
| 860 | * @param server_name server name as string (DNS name or IP address string)
|
---|
| 861 | * @param port tcp port of the server
|
---|
| 862 | * @param uri uri to get from the server, remember leading "/"!
|
---|
| 863 | * @param settings connection settings (callbacks, proxy, etc.)
|
---|
| 864 | * @param callback_arg argument passed to all the callbacks
|
---|
| 865 | * @param connection retreives the connection handle (to match in callbacks)
|
---|
| 866 | * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
|
---|
| 867 | * or an error code
|
---|
| 868 | */
|
---|
| 869 | err_t
|
---|
| 870 | httpc_get_file_dns_to_disk(const char* server_name, u16_t port, const char* uri, const httpc_connection_t *settings,
|
---|
| 871 | void* callback_arg, const char* local_file_name, httpc_state_t **connection)
|
---|
| 872 | {
|
---|
| 873 | err_t err;
|
---|
| 874 | httpc_state_t* req;
|
---|
| 875 | httpc_filestate_t *filestate;
|
---|
| 876 |
|
---|
| 877 | LWIP_ERROR("invalid parameters", (server_name != NULL) && (uri != NULL) && (local_file_name != NULL), return ERR_ARG;);
|
---|
| 878 |
|
---|
| 879 | err = httpc_fs_init(&filestate, local_file_name, settings, callback_arg);
|
---|
| 880 | if (err != ERR_OK) {
|
---|
| 881 | return err;
|
---|
| 882 | }
|
---|
| 883 |
|
---|
| 884 | err = httpc_init_connection(&req, &filestate->settings, server_name, port,
|
---|
| 885 | uri, httpc_fs_tcp_recv, filestate);
|
---|
| 886 | if (err != ERR_OK) {
|
---|
| 887 | httpc_fs_free(filestate);
|
---|
| 888 | return err;
|
---|
| 889 | }
|
---|
| 890 |
|
---|
| 891 | if (settings->use_proxy) {
|
---|
| 892 | err = httpc_get_internal_addr(req, &settings->proxy_addr);
|
---|
| 893 | } else {
|
---|
| 894 | err = httpc_get_internal_dns(req, server_name);
|
---|
| 895 | }
|
---|
| 896 | if(err != ERR_OK) {
|
---|
| 897 | httpc_fs_free(filestate);
|
---|
| 898 | httpc_free_state(req);
|
---|
| 899 | return err;
|
---|
| 900 | }
|
---|
| 901 |
|
---|
| 902 | if (connection != NULL) {
|
---|
| 903 | *connection = req;
|
---|
| 904 | }
|
---|
| 905 | return ERR_OK;
|
---|
| 906 | }
|
---|
| 907 | #endif /* LWIP_HTTPC_HAVE_FILE_IO */
|
---|
| 908 |
|
---|
| 909 | #endif /* LWIP_TCP && LWIP_CALLBACK_API */
|
---|