1 | /**
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2 | * \addtogroup apps
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3 | * @{
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4 | */
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5 |
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6 | /**
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7 | * \defgroup httpd Web server
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8 | * @{
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9 | * The uIP web server is a very simplistic implementation of an HTTP
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10 | * server. It can serve web pages and files from a read-only ROM
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11 | * filesystem, and provides a very small scripting language.
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12 |
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13 | */
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14 |
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15 | /**
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16 | * \file
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17 | * Web server
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18 | * \author
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19 | * Adam Dunkels <adam@sics.se>
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20 | */
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21 |
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22 |
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23 | /*
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24 | * Copyright (c) 2004, Adam Dunkels.
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25 | * All rights reserved.
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26 | *
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27 | * Redistribution and use in source and binary forms, with or without
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28 | * modification, are permitted provided that the following conditions
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29 | * are met:
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30 | * 1. Redistributions of source code must retain the above copyright
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31 | * notice, this list of conditions and the following disclaimer.
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32 | * 2. Redistributions in binary form must reproduce the above copyright
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33 | * notice, this list of conditions and the following disclaimer in the
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34 | * documentation and/or other materials provided with the distribution.
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35 | * 3. Neither the name of the Institute nor the names of its contributors
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36 | * may be used to endorse or promote products derived from this software
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37 | * without specific prior written permission.
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38 | *
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39 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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40 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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42 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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43 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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44 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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45 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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47 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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48 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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49 | * SUCH DAMAGE.
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50 | *
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51 | * This file is part of the uIP TCP/IP stack.
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52 | *
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53 | * Author: Adam Dunkels <adam@sics.se>
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54 | *
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55 | * $Id: httpd.c 152 2016-01-14 04:17:21Z coas-nagasima $
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56 | */
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57 |
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58 | #include "uip.h"
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59 | #include "httpd.h"
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60 | #include "httpd-fs.h"
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61 | #include "http-strings.h"
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62 | #include "base64.h"
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63 | #include "sha1.h"
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64 | #include "kadecot_names.h"
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65 | #include "uip_adpt.h"
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66 |
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67 | #include <string.h>
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68 |
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69 | #define STATE_WAITING 0
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70 | #define STATE_OUTPUT 1
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71 | #define STATE_WS_OUTPUT 2
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72 |
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73 | #define ISO_nl 0x0a
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74 | #define ISO_space 0x20
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75 | #define ISO_bang 0x21
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76 | #define ISO_percent 0x25
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77 | #define ISO_period 0x2e
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78 | #define ISO_slash 0x2f
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79 | #define ISO_colon 0x3a
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80 |
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81 | #ifndef _MSC_VER
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82 | #ifndef strcpy_s
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83 | #define strcpy_s(s1, s1m, s2) strcpy(s1, s2)
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84 | #endif
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85 |
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86 | #ifndef strncpy_s
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87 | #define strncpy_s(dst, dsz, src, sz) strncpy(dst, src, sz)
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88 | #endif
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89 | #endif
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90 |
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91 | #define MAX(a, b) ((a > b) ? a : b)
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92 |
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93 | union temp_type_t {
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94 | char binary[sizeof(http_content_type_binary)];
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95 | char html[sizeof(http_content_type_html)];
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96 | char css[sizeof(http_content_type_css)];
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97 | char js[sizeof(http_content_type_js)];
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98 | char json[sizeof(http_content_type_json)];
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99 | char png[sizeof(http_content_type_png)];
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100 | char gif[sizeof(http_content_type_gif)];
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101 | char jpg[sizeof(http_content_type_jpg)];
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102 | char svg[sizeof(http_content_type_svg)];
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103 | char plain[sizeof(http_content_type_plain)];
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104 | };
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105 |
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106 | struct temp_buf_t{
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107 | char headers[MAX(sizeof(http_header_404), sizeof(http_header_200))
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108 | + sizeof(http_content_encoding_gzip)
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109 | + sizeof(union temp_type_t)
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110 | ];
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111 | char ws_headers[sizeof(http_header_101)
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112 | + sizeof(http_upgrade) + sizeof(((struct httpd_state *)0)->message.upgrade) + sizeof(http_crnl)
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113 | + sizeof(http_connection) + sizeof(((struct httpd_state *)0)->message.connection) + sizeof(http_crnl)
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114 | + sizeof(http_sec_websocket_accept) + sizeof(((struct httpd_state *)0)->message.response_key) + sizeof(http_crnl)
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115 | + sizeof(http_sec_websocket_protocol) + sizeof(((struct httpd_state *)0)->message.sec_websocket_protocol) + sizeof(http_crnl)
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116 | + sizeof(http_crnl)
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117 | ];
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118 | };
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119 | static char temp_buf[sizeof(struct temp_buf_t)];
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120 |
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121 | int httpd_strnicmp(const char *s1, const char *s2, size_t n)
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122 | {
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123 | int i;
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124 | char c1, c2;
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125 |
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126 | for(i = 0; i < n; i++, s1++, s2++){
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127 | c1 = *s1;
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128 | c2 = *s2;
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129 | if(c1 == '\0' && c2 == '\0')
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130 | return 0;
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131 |
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132 | if(c1 >= 'a' && c1 <= 'z')
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133 | c1 += 'A' - 'a';
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134 |
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135 | if(c2 >= 'a' && c2 <= 'z')
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136 | c2 += 'A' - 'a';
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137 |
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138 | if(c1 < c2)
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139 | return -1;
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140 |
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141 | if(c1 > c2)
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142 | return 1;
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143 | }
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144 |
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145 | return 0;
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146 | }
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147 |
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148 | struct websocket *websocket_getws(ID wbsid)
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149 | {
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150 | struct uip_conn *conn = uip_getconn(wbsid);
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151 | if (conn == NULL)
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152 | return NULL;
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153 |
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154 | return &conn->appstate.websocket;
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155 | }
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156 |
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157 | /*---------------------------------------------------------------------------*/
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158 | static unsigned short
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159 | generate_part_of_file(void *state)
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160 | {
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161 | struct httpd_state *s = (struct httpd_state *)state;
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162 | int len;
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163 |
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164 | if (s->file.len > uip_mss()) {
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165 | len = uip_mss();
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166 | } else {
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167 | len = s->file.len;
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168 | }
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169 | s->len = httpd_fs_read(&s->file, uip_appdata, len);
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170 |
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171 | return s->len;
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172 | }
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173 | /*---------------------------------------------------------------------------*/
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174 | static
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175 | PT_THREAD(send_file(struct httpd_state *s))
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176 | {
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177 | PSOCK_BEGIN(&s->sout);
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178 |
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179 | do {
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180 | PSOCK_GENERATOR_SEND(&s->sout, generate_part_of_file, s);
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181 | s->file.len -= s->len;
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182 | s->file.pos += s->len;
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183 | } while (s->file.len > 0);
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184 |
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185 | PSOCK_END(&s->sout);
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186 | }
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187 | /*---------------------------------------------------------------------------*/
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188 | static
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189 | PT_THREAD(send_headers(struct httpd_state *s, const char *statushdr))
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190 | {
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191 | char *pos = temp_buf;
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192 | int len;
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193 | char *ptr;
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194 |
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195 | PSOCK_BEGIN(&s->sout);
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196 |
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197 | len = strlen(statushdr);
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198 | memcpy(pos, statushdr, len); pos += len;
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199 |
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200 | len = strlen(http_content_encoding_gzip);
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201 | memcpy(pos, http_content_encoding_gzip, len); pos += len;
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202 |
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203 | ptr = strrchr(s->message.request_url, ISO_period);
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204 | if (ptr == NULL) {
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205 | len = strlen(http_content_type_binary);
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206 | memcpy(pos, http_content_type_binary, len); pos += len;
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207 | } else if (strncmp(http_html, ptr, 5) == 0 ||
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208 | strncmp(http_shtml, ptr, 6) == 0) {
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209 | len = strlen(http_content_type_html);
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210 | memcpy(pos, http_content_type_html, len); pos += len;
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211 | } else if (strncmp(http_css, ptr, 4) == 0) {
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212 | len = strlen(http_content_type_css);
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213 | memcpy(pos, http_content_type_css, len); pos += len;
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214 | } else if (strncmp(http_js, ptr, 3) == 0) {
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215 | len = strlen(http_content_type_js);
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216 | memcpy(pos, http_content_type_js, len); pos += len;
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217 | } else if (strncmp(http_json, ptr, 5) == 0) {
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218 | len = strlen(http_content_type_json);
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219 | memcpy(pos, http_content_type_json, len); pos += len;
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220 | } else if (strncmp(http_png, ptr, 4) == 0) {
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221 | len = strlen(http_content_type_png);
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222 | memcpy(pos, http_content_type_png, len); pos += len;
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223 | } else if (strncmp(http_gif, ptr, 4) == 0) {
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224 | len = strlen(http_content_type_gif);
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225 | memcpy(pos, http_content_type_gif, len); pos += len;
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226 | } else if (strncmp(http_jpg, ptr, 4) == 0) {
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227 | len = strlen(http_content_type_jpg);
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228 | memcpy(pos, http_content_type_jpg, len); pos += len;
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229 | } else if (strncmp(http_svg, ptr, 4) == 0) {
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230 | len = strlen(http_content_type_svg);
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231 | memcpy(pos, http_content_type_svg, len); pos += len;
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232 | } else {
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233 | len = strlen(http_content_type_plain);
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234 | memcpy(pos, http_content_type_plain, len); pos += len;
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235 | }
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236 | *pos = '\0';
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237 |
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238 | PSOCK_SEND(&s->sout, temp_buf, pos - temp_buf);
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239 |
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240 | PSOCK_END(&s->sout);
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241 | }
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242 | /*---------------------------------------------------------------------------*/
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243 | static
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244 | PT_THREAD(handle_output(struct httpd_state *s))
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245 | {
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246 | char *ptr;
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247 |
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248 | PT_BEGIN(&s->outputpt);
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249 |
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250 | if (!httpd_fs_open(s->message.request_url, &s->file)) {
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251 | httpd_fs_open(http_404_html, &s->file);
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252 | strcpy_s(s->message.request_url, sizeof(s->message.request_url), http_404_html);
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253 | PT_WAIT_THREAD(&s->outputpt,
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254 | send_headers(s,
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255 | http_header_404));
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256 | PT_WAIT_THREAD(&s->outputpt, send_file(s));
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257 | } else {
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258 | PT_WAIT_THREAD(&s->outputpt,
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259 | send_headers(s,
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260 | http_header_200));
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261 | ptr = strchr(s->message.request_url, ISO_period);
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262 | PT_WAIT_THREAD(&s->outputpt, send_file(s));
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263 | }
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264 |
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265 | PSOCK_CLOSE(&s->sout);
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266 | PT_END(&s->outputpt);
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267 | }
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268 | /*---------------------------------------------------------------------------*/
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269 | static
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270 | PT_THREAD(send_ws_headers(struct httpd_state *s, const char *statushdr))
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271 | {
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272 | char *pos = temp_buf;
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273 | int len;
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274 |
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275 | PSOCK_BEGIN(&s->sout);
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276 |
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277 | len = strlen(statushdr);
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278 | memcpy(pos, statushdr, len); pos += len;
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279 |
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280 | len = strlen(http_upgrade);
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281 | memcpy(pos, http_upgrade, len); pos += len;
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282 | len = strlen(s->message.upgrade);
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283 | memcpy(pos, s->message.upgrade, len); pos += len;
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284 | len = strlen(http_crnl);
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285 | memcpy(pos, http_crnl, len); pos += len;
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286 |
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287 | len = strlen(http_connection);
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288 | memcpy(pos, http_connection, len); pos += len;
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289 | len = strlen(s->message.connection);
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290 | memcpy(pos, s->message.connection, len); pos += len;
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291 | len = strlen(http_crnl);
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292 | memcpy(pos, http_crnl, len); pos += len;
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293 |
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294 | len = strlen(http_sec_websocket_accept);
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295 | memcpy(pos, http_sec_websocket_accept, len); pos += len;
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296 | len = strlen(s->message.response_key);
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297 | memcpy(pos, s->message.response_key, len); pos += len;
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298 | len = strlen(http_crnl);
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299 | memcpy(pos, http_crnl, len); pos += len;
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300 |
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301 | len = strlen(http_sec_websocket_protocol);
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302 | memcpy(pos, http_sec_websocket_protocol, len); pos += len;
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303 | len = strlen(s->message.sec_websocket_protocol);
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304 | memcpy(pos, s->message.sec_websocket_protocol, len); pos += len;
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305 | len = strlen(http_crnl);
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306 | memcpy(pos, http_crnl, len); pos += len;
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307 |
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308 | len = strlen(http_crnl);
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309 | memcpy(pos, http_crnl, len); pos += len;
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310 | *pos = '\0';
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311 |
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312 | PSOCK_SEND(&s->sout, temp_buf, pos - temp_buf);
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313 |
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314 | PSOCK_END(&s->sout);
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315 | }
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316 | /*---------------------------------------------------------------------------*/
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317 | static unsigned short
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318 | generate_part_of_ws_data(void *state)
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319 | {
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320 | struct httpd_state *s = (struct httpd_state *)state;
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321 |
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322 | s->len = websocket_output(&s->websocket, uip_appdata, uip_mss());
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323 |
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324 | return s->len;
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325 | }
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326 | /*---------------------------------------------------------------------------*/
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327 | static
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328 | PT_THREAD(send_ws_data(struct httpd_state *s))
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329 | {
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330 | PSOCK_BEGIN(&s->sout);
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331 |
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332 | PSOCK_GENERATOR_SEND(&s->sout, generate_part_of_ws_data, s);
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333 |
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334 | PSOCK_END(&s->sout);
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335 | }
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336 | /*---------------------------------------------------------------------------*/
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337 | static
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338 | PT_THREAD(handle_ws_output(struct httpd_state *s))
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339 | {
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340 | char shaHash[20];
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341 | SHA_CTX sha1;
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342 | int len;
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343 |
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344 | PT_BEGIN(&s->outputpt);
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345 |
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346 | strlncat(s->message.response_key, sizeof(s->message.response_key),
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347 | s->message.sec_websocket_key, sizeof(s->message.sec_websocket_key));
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348 | len = strlncat(s->message.response_key, sizeof(s->message.response_key),
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349 | http_websocket_guid, sizeof(http_websocket_guid));
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350 | memset(shaHash, 0, sizeof(shaHash));
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351 | SHA1_Init(&sha1);
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352 | SHA1_Update(&sha1, (sha1_byte *)s->message.response_key, len);
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353 | SHA1_Final((sha1_byte *)shaHash, &sha1);
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354 | base64_encode((unsigned char *)s->message.response_key,
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355 | sizeof(s->message.response_key), (unsigned char *)shaHash, sizeof(shaHash));
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356 |
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357 | PT_WAIT_THREAD(&s->outputpt, send_ws_headers(s, http_header_101));
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358 |
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359 | s->message.response_key[0] = '\0';
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360 |
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361 | do {
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362 | while(!websocket_newdata(&s->websocket))
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363 | PT_YIELD(&s->outputpt);
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364 |
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365 | PT_WAIT_THREAD(&s->outputpt, send_ws_data(s));
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366 | } while ((s->state == STATE_WS_OUTPUT) && (!s->close_req));
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367 | s->state = STATE_WAITING;
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368 | websocket_destroy(&s->websocket);
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369 | s->close_req = 0;
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370 |
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371 | PSOCK_CLOSE(&s->sout);
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372 |
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373 | PT_END(&s->outputpt);
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374 | }
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375 | /*---------------------------------------------------------------------------*/
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376 | static
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377 | PT_THREAD(handle_input(struct httpd_state *s))
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378 | {
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379 | size_t done;
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380 | const char *data;
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381 | PSOCK_BEGIN(&s->sin);
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382 |
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383 | memset(&s->message, 0, sizeof(s->message));
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384 | http_parser_init(&s->parser, HTTP_REQUEST);
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385 |
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386 | for (;;) {
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387 | PSOCK_WAIT_UNTIL(&s->sin, psock_newdata(&s->sin));
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388 |
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389 | s->parse_pos = 0;
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390 | s->parse_len = uip_datalen();
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391 | data = &((const char *)uip_appdata)[s->parse_pos];
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392 | done = http_parser_execute(&s->parser, &websvr_settings, data, s->parse_len);
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393 | if (done != 0) {
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394 | s->parse_pos += done;
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395 | s->parse_len -= done;
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396 | break;
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397 | }
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398 | }
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399 |
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400 | if (!s->message.message_complete_cb_called
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401 | && s->message.method != HTTP_GET) {
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402 | PSOCK_CLOSE_EXIT(&s->sin);
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403 | }
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404 |
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405 | /* ""か"/"なら"index.html"に変更 */
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406 | if ((s->message.request_url[0] == '\0') || ((s->message.request_url[0] == '/') && (s->message.request_url[1] == '\0'))) {
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407 | strncpy_s(s->message.request_url, sizeof(s->message.request_url), http_index_html, sizeof(s->message.request_url));
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408 | }
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409 |
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410 | /* httpd_log_file(uip_conn->ripaddr, s->message.request_url);*/
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411 | /* httpd_log(s->message.referer);*/
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412 |
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413 | if (httpd_strnicmp(http_websocket, s->message.upgrade, sizeof(s->message.upgrade)) == 0) {
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414 | s->state = STATE_WS_OUTPUT;
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415 |
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416 | websocket_init(&s->websocket, uip_getid((struct uip_conn *)((intptr_t)s - offsetof(struct uip_conn, appstate))));
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417 | for (;;) {
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418 | if(s->parse_len <= 0){
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419 | PT_YIELD(&s->sin.pt);
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420 | PSOCK_WAIT_UNTIL(&s->sin, psock_newdata(&s->sin));
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421 |
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422 | s->parse_pos = 0;
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423 | s->parse_len = uip_datalen();
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424 | }
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425 | data = &((const char *)uip_appdata)[s->parse_pos];
|
---|
426 | done = websocket_input(&s->websocket, (void *)data, s->parse_len);
|
---|
427 | if ((done != 0) || (s->websocket.rstate.opecode == connection_close)) {
|
---|
428 | s->close_req = 1;
|
---|
429 | PSOCK_CLOSE_EXIT(&s->sin);
|
---|
430 | break;
|
---|
431 | }
|
---|
432 | s->parse_pos = s->parse_len;
|
---|
433 | s->parse_len = 0;
|
---|
434 | }
|
---|
435 | }
|
---|
436 | else {
|
---|
437 | s->state = STATE_OUTPUT;
|
---|
438 |
|
---|
439 | while (1) {
|
---|
440 | PSOCK_READTO(&s->sin, ISO_nl);
|
---|
441 | }
|
---|
442 | }
|
---|
443 |
|
---|
444 | PSOCK_END(&s->sin);
|
---|
445 | }
|
---|
446 | /*---------------------------------------------------------------------------*/
|
---|
447 | static void
|
---|
448 | handle_connection(struct httpd_state *s)
|
---|
449 | {
|
---|
450 | handle_input(s);
|
---|
451 | switch (s->state) {
|
---|
452 | case STATE_OUTPUT:
|
---|
453 | handle_output(s);
|
---|
454 | break;
|
---|
455 | case STATE_WS_OUTPUT:
|
---|
456 | handle_ws_output(s);
|
---|
457 | break;
|
---|
458 | }
|
---|
459 | }
|
---|
460 | /*---------------------------------------------------------------------------*/
|
---|
461 | void
|
---|
462 | httpd_appcall(void)
|
---|
463 | {
|
---|
464 | struct httpd_state *s = (struct httpd_state *)&(uip_conn->appstate);
|
---|
465 |
|
---|
466 | if (uip_closed() || uip_aborted() || uip_timedout()) {
|
---|
467 | } else if (uip_connected()) {
|
---|
468 | if(s->state != STATE_WS_OUTPUT){
|
---|
469 | PSOCK_INIT(&s->sin, s->inputbuf, sizeof(s->inputbuf) - 1);
|
---|
470 | PSOCK_INIT(&s->sout, s->inputbuf, sizeof(s->inputbuf) - 1);
|
---|
471 | PT_INIT(&s->outputpt);
|
---|
472 | s->state = STATE_WAITING;
|
---|
473 | /* timer_set(&s->timer, CLOCK_SECOND * 100);*/
|
---|
474 | s->timer = 0;
|
---|
475 | handle_connection(s);
|
---|
476 | }
|
---|
477 | else {
|
---|
478 | handle_connection(s);
|
---|
479 | }
|
---|
480 | } else if (s != NULL) {
|
---|
481 | if(s->state != STATE_WS_OUTPUT){
|
---|
482 | if (uip_poll()) {
|
---|
483 | ++s->timer;
|
---|
484 | if (s->timer >= 20) {
|
---|
485 | uip_abort();
|
---|
486 | }
|
---|
487 | } else {
|
---|
488 | s->timer = 0;
|
---|
489 | }
|
---|
490 | }
|
---|
491 | handle_connection(s);
|
---|
492 | } else {
|
---|
493 | uip_abort();
|
---|
494 | }
|
---|
495 | }
|
---|
496 | /*---------------------------------------------------------------------------*/
|
---|
497 | /**
|
---|
498 | * \brief Initialize the web server
|
---|
499 | *
|
---|
500 | * This function initializes the web server and should be
|
---|
501 | * called at system boot-up.
|
---|
502 | */
|
---|
503 | void
|
---|
504 | httpd_init(void)
|
---|
505 | {
|
---|
506 | uip_listen(HTONS(41314));
|
---|
507 |
|
---|
508 | httpd_fs_init();
|
---|
509 | kadecot_names_init();
|
---|
510 | }
|
---|
511 | /*---------------------------------------------------------------------------*/
|
---|
512 | /** @} */
|
---|