[101] | 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 108 2015-06-11 09:15:46Z 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 | int httpd_strnicmp(const char *s1, const char *s2, size_t n)
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| 92 | {
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| 93 | int i;
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| 94 | char c1, c2;
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| 95 |
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| 96 | for(i = 0; i < n; i++, s1++, s2++){
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| 97 | c1 = *s1;
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| 98 | c2 = *s2;
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| 99 | if(c1 == '\0' && c2 == '\0')
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| 100 | return 0;
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| 101 |
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| 102 | if(c1 >= 'a' && c1 <= 'z')
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| 103 | c1 += 'A' - 'a';
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| 104 |
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| 105 | if(c2 >= 'a' && c2 <= 'z')
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| 106 | c2 += 'A' - 'a';
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| 107 |
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| 108 | if(c1 < c2)
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| 109 | return -1;
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| 110 |
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| 111 | if(c1 > c2)
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| 112 | return 1;
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| 113 | }
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| 114 |
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| 115 | return 0;
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| 116 | }
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| 117 |
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| 118 | struct websocket *websocket_getws(ID wbsid)
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| 119 | {
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| 120 | struct uip_conn *conn = uip_getconn(wbsid);
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| 121 | if (conn == NULL)
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| 122 | return NULL;
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| 123 |
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| 124 | return &conn->appstate.websocket;
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| 125 | }
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| 126 |
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| 127 | /*---------------------------------------------------------------------------*/
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| 128 | static unsigned short
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| 129 | generate_part_of_file(void *state)
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| 130 | {
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| 131 | struct httpd_state *s = (struct httpd_state *)state;
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| 132 | int len;
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| 133 |
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| 134 | if (s->file.len > uip_mss()) {
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| 135 | len = uip_mss();
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| 136 | } else {
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| 137 | len = s->file.len;
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| 138 | }
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| 139 | s->len = httpd_fs_read(&s->file, uip_appdata, len);
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| 140 |
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| 141 | return s->len;
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| 142 | }
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| 143 | /*---------------------------------------------------------------------------*/
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| 144 | static
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| 145 | PT_THREAD(send_file(struct httpd_state *s))
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| 146 | {
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| 147 | PSOCK_BEGIN(&s->sout);
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| 148 |
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| 149 | do {
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| 150 | PSOCK_GENERATOR_SEND(&s->sout, generate_part_of_file, s);
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| 151 | s->file.len -= s->len;
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| 152 | s->file.pos += s->len;
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| 153 | } while (s->file.len > 0);
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| 154 |
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| 155 | PSOCK_END(&s->sout);
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| 156 | }
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| 157 | /*---------------------------------------------------------------------------*/
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| 158 | static
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| 159 | PT_THREAD(send_headers(struct httpd_state *s, const char *statushdr))
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| 160 | {
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| 161 | char *ptr;
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| 162 |
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| 163 | PSOCK_BEGIN(&s->sout);
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| 164 |
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| 165 | PSOCK_SEND_STR(&s->sout, statushdr);
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| 166 |
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| 167 | PSOCK_SEND_STR(&s->sout, http_content_encoding_gzip);
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| 168 |
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| 169 | ptr = strrchr(s->message.request_url, ISO_period);
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| 170 | if (ptr == NULL) {
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| 171 | PSOCK_SEND_STR(&s->sout, http_content_type_binary);
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| 172 | } else if (strncmp(http_html, ptr, 5) == 0 ||
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| 173 | strncmp(http_shtml, ptr, 6) == 0) {
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| 174 | PSOCK_SEND_STR(&s->sout, http_content_type_html);
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| 175 | } else if (strncmp(http_css, ptr, 4) == 0) {
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| 176 | PSOCK_SEND_STR(&s->sout, http_content_type_css);
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| 177 | } else if (strncmp(http_js, ptr, 3) == 0) {
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| 178 | PSOCK_SEND_STR(&s->sout, http_content_type_js);
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| 179 | } else if (strncmp(http_json, ptr, 5) == 0) {
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| 180 | PSOCK_SEND_STR(&s->sout, http_content_type_json);
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| 181 | } else if (strncmp(http_png, ptr, 4) == 0) {
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| 182 | PSOCK_SEND_STR(&s->sout, http_content_type_png);
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| 183 | } else if (strncmp(http_gif, ptr, 4) == 0) {
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| 184 | PSOCK_SEND_STR(&s->sout, http_content_type_gif);
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| 185 | } else if (strncmp(http_jpg, ptr, 4) == 0) {
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| 186 | PSOCK_SEND_STR(&s->sout, http_content_type_jpg);
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| 187 | } else if (strncmp(http_svg, ptr, 4) == 0) {
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| 188 | PSOCK_SEND_STR(&s->sout, http_content_type_svg);
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| 189 | } else {
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| 190 | PSOCK_SEND_STR(&s->sout, http_content_type_plain);
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| 191 | }
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| 192 | PSOCK_END(&s->sout);
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| 193 | }
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| 194 | /*---------------------------------------------------------------------------*/
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| 195 | static
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| 196 | PT_THREAD(handle_output(struct httpd_state *s))
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| 197 | {
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| 198 | char *ptr;
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| 199 |
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| 200 | PT_BEGIN(&s->outputpt);
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| 201 |
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| 202 | if (!httpd_fs_open(s->message.request_url, &s->file)) {
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| 203 | httpd_fs_open(http_404_html, &s->file);
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| 204 | strcpy_s(s->message.request_url, sizeof(s->message.request_url), http_404_html);
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| 205 | PT_WAIT_THREAD(&s->outputpt,
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| 206 | send_headers(s,
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| 207 | http_header_404));
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| 208 | PT_WAIT_THREAD(&s->outputpt, send_file(s));
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| 209 | } else {
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| 210 | PT_WAIT_THREAD(&s->outputpt,
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| 211 | send_headers(s,
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| 212 | http_header_200));
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| 213 | ptr = strchr(s->message.request_url, ISO_period);
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| 214 | PT_WAIT_THREAD(&s->outputpt, send_file(s));
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| 215 | }
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| 216 |
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| 217 | PSOCK_CLOSE(&s->sout);
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| 218 | PT_END(&s->outputpt);
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| 219 | }
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| 220 | /*---------------------------------------------------------------------------*/
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| 221 | static
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| 222 | PT_THREAD(send_ws_headers(struct httpd_state *s, const char *statushdr))
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| 223 | {
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| 224 | PSOCK_BEGIN(&s->sout);
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| 225 |
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| 226 | PSOCK_SEND_STR(&s->sout, statushdr);
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| 227 |
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| 228 | PSOCK_SEND_STR(&s->sout, http_upgrade);
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| 229 | PSOCK_SEND_STR(&s->sout, s->message.upgrade);
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| 230 | PSOCK_SEND_STR(&s->sout, http_crnl);
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| 231 |
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| 232 | PSOCK_SEND_STR(&s->sout, http_connection);
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| 233 | PSOCK_SEND_STR(&s->sout, s->message.connection);
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| 234 | PSOCK_SEND_STR(&s->sout, http_crnl);
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| 235 |
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| 236 | PSOCK_SEND_STR(&s->sout, http_sec_websocket_accept);
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| 237 | PSOCK_SEND_STR(&s->sout, s->message.response_key);
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| 238 | PSOCK_SEND_STR(&s->sout, http_crnl);
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| 239 |
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| 240 | PSOCK_SEND_STR(&s->sout, http_sec_websocket_protocol);
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| 241 | PSOCK_SEND_STR(&s->sout, s->message.sec_websocket_protocol);
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| 242 | PSOCK_SEND_STR(&s->sout, http_crnl);
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| 243 |
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| 244 | PSOCK_SEND_STR(&s->sout, http_crnl);
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| 245 |
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| 246 | PSOCK_END(&s->sout);
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| 247 | }
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| 248 | /*---------------------------------------------------------------------------*/
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| 249 | static unsigned short
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| 250 | generate_part_of_ws_data(void *state)
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| 251 | {
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| 252 | struct httpd_state *s = (struct httpd_state *)state;
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| 253 |
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| 254 | s->len = websocket_output(&s->websocket, uip_appdata, uip_mss());
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| 255 |
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| 256 | return s->len;
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| 257 | }
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| 258 | /*---------------------------------------------------------------------------*/
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| 259 | static
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| 260 | PT_THREAD(send_ws_data(struct httpd_state *s))
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| 261 | {
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| 262 | PSOCK_BEGIN(&s->sout);
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| 263 |
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| 264 | PSOCK_GENERATOR_SEND(&s->sout, generate_part_of_ws_data, s);
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| 265 |
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| 266 | PSOCK_END(&s->sout);
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| 267 | }
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| 268 | /*---------------------------------------------------------------------------*/
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| 269 | static
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| 270 | PT_THREAD(handle_ws_output(struct httpd_state *s))
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| 271 | {
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| 272 | char shaHash[20];
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| 273 | SHA_CTX sha1;
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| 274 | int len;
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| 275 |
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| 276 | PT_BEGIN(&s->outputpt);
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| 277 |
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| 278 | strlncat(s->message.response_key, sizeof(s->message.response_key),
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| 279 | s->message.sec_websocket_key, sizeof(s->message.sec_websocket_key));
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| 280 | len = strlncat(s->message.response_key, sizeof(s->message.response_key),
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| 281 | http_websocket_guid, sizeof(http_websocket_guid));
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| 282 | memset(shaHash, 0, sizeof(shaHash));
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| 283 | SHA1_Init(&sha1);
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| 284 | SHA1_Update(&sha1, (sha1_byte *)s->message.response_key, len);
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| 285 | SHA1_Final((sha1_byte *)shaHash, &sha1);
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| 286 | base64_encode((unsigned char *)s->message.response_key,
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| 287 | sizeof(s->message.response_key), (unsigned char *)shaHash, sizeof(shaHash));
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| 288 |
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| 289 | PT_WAIT_THREAD(&s->outputpt, send_ws_headers(s, http_header_101));
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| 290 |
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| 291 | s->message.response_key[0] = '\0';
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| 292 |
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| 293 | do {
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| 294 | while(!websocket_newdata(&s->websocket))
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| 295 | PT_YIELD(&s->outputpt);
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| 296 |
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| 297 | PT_WAIT_THREAD(&s->outputpt, send_ws_data(s));
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| 298 | } while ((s->state == STATE_WS_OUTPUT) && (!s->close_req));
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| 299 | s->state = STATE_WAITING;
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| 300 | websocket_destroy(&s->websocket);
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| 301 | s->close_req = 0;
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| 302 |
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| 303 | PSOCK_CLOSE(&s->sout);
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| 304 |
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| 305 | PT_END(&s->outputpt);
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| 306 | }
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| 307 | /*---------------------------------------------------------------------------*/
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| 308 | static
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| 309 | PT_THREAD(handle_input(struct httpd_state *s))
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| 310 | {
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| 311 | size_t done;
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| 312 | const char *data;
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| 313 | PSOCK_BEGIN(&s->sin);
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| 314 |
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| 315 | memset(&s->message, 0, sizeof(s->message));
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| 316 | http_parser_init(&s->parser, HTTP_REQUEST);
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| 317 |
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| 318 | for (;;) {
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| 319 | PSOCK_WAIT_UNTIL(&s->sin, psock_newdata(&s->sin));
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| 320 |
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| 321 | s->parse_pos = 0;
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| 322 | s->parse_len = uip_datalen();
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| 323 | data = &((const char *)uip_appdata)[s->parse_pos];
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| 324 | done = http_parser_execute(&s->parser, &websvr_settings, data, s->parse_len);
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| 325 | if (done != 0) {
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| 326 | s->parse_pos += done;
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| 327 | s->parse_len -= done;
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| 328 | break;
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| 329 | }
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| 330 | }
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| 331 |
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| 332 | if (!s->message.message_complete_cb_called
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| 333 | && s->message.method != HTTP_GET) {
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| 334 | PSOCK_CLOSE_EXIT(&s->sin);
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| 335 | }
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| 336 |
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| 337 | /* ""か"/"なら"index.html"に変更 */
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| 338 | if ((s->message.request_url[0] == '\0') || ((s->message.request_url[0] == '/') && (s->message.request_url[1] == '\0'))) {
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| 339 | strncpy_s(s->message.request_url, sizeof(s->message.request_url), http_index_html, sizeof(s->message.request_url));
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| 340 | }
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| 341 |
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| 342 | /* httpd_log_file(uip_conn->ripaddr, s->message.request_url);*/
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| 343 | /* httpd_log(s->message.referer);*/
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| 344 |
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| 345 | if (httpd_strnicmp(http_websocket, s->message.upgrade, sizeof(s->message.upgrade)) == 0) {
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| 346 | s->state = STATE_WS_OUTPUT;
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| 347 |
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| 348 | websocket_init(&s->websocket, uip_getid((struct uip_conn *)((intptr_t)s - offsetof(struct uip_conn, appstate))));
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| 349 | for (;;) {
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| 350 | if(s->parse_len <= 0){
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| 351 | PT_YIELD(&s->sin.pt);
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| 352 | PSOCK_WAIT_UNTIL(&s->sin, psock_newdata(&s->sin));
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| 353 |
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| 354 | s->parse_pos = 0;
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| 355 | s->parse_len = uip_datalen();
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| 356 | }
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| 357 | data = &((const char *)uip_appdata)[s->parse_pos];
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| 358 | done = websocket_input(&s->websocket, (void *)data, s->parse_len);
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| 359 | if ((done != 0) || (s->websocket.rstate.opecode == connection_close)) {
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| 360 | s->close_req = 1;
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| 361 | PSOCK_CLOSE_EXIT(&s->sin);
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| 362 | break;
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| 363 | }
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| 364 | s->parse_pos = s->parse_len;
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| 365 | s->parse_len = 0;
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| 366 | }
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| 367 | }
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| 368 | else {
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| 369 | s->state = STATE_OUTPUT;
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| 370 |
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| 371 | while (1) {
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| 372 | PSOCK_READTO(&s->sin, ISO_nl);
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| 373 | }
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| 374 | }
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| 375 |
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| 376 | PSOCK_END(&s->sin);
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| 377 | }
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| 378 | /*---------------------------------------------------------------------------*/
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| 379 | static void
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| 380 | handle_connection(struct httpd_state *s)
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| 381 | {
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| 382 | handle_input(s);
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| 383 | switch (s->state) {
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| 384 | case STATE_OUTPUT:
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| 385 | handle_output(s);
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| 386 | break;
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| 387 | case STATE_WS_OUTPUT:
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| 388 | handle_ws_output(s);
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| 389 | break;
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| 390 | }
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| 391 | }
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| 392 | /*---------------------------------------------------------------------------*/
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| 393 | void
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| 394 | httpd_appcall(void)
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| 395 | {
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| 396 | struct httpd_state *s = (struct httpd_state *)&(uip_conn->appstate);
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| 397 |
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| 398 | if (uip_closed() || uip_aborted() || uip_timedout()) {
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| 399 | } else if (uip_connected()) {
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| 400 | if(s->state != STATE_WS_OUTPUT){
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| 401 | PSOCK_INIT(&s->sin, s->inputbuf, sizeof(s->inputbuf) - 1);
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| 402 | PSOCK_INIT(&s->sout, s->inputbuf, sizeof(s->inputbuf) - 1);
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| 403 | PT_INIT(&s->outputpt);
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| 404 | s->state = STATE_WAITING;
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| 405 | /* timer_set(&s->timer, CLOCK_SECOND * 100);*/
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| 406 | s->timer = 0;
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| 407 | handle_connection(s);
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| 408 | }
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| 409 | else {
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| 410 | handle_connection(s);
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| 411 | }
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| 412 | } else if (s != NULL) {
|
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| 413 | if(s->state != STATE_WS_OUTPUT){
|
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| 414 | if (uip_poll()) {
|
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| 415 | ++s->timer;
|
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| 416 | if (s->timer >= 20) {
|
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| 417 | uip_abort();
|
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| 418 | }
|
---|
| 419 | } else {
|
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| 420 | s->timer = 0;
|
---|
| 421 | }
|
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| 422 | }
|
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| 423 | handle_connection(s);
|
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| 424 | } else {
|
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| 425 | uip_abort();
|
---|
| 426 | }
|
---|
| 427 | }
|
---|
| 428 | /*---------------------------------------------------------------------------*/
|
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| 429 | /**
|
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| 430 | * \brief Initialize the web server
|
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| 431 | *
|
---|
| 432 | * This function initializes the web server and should be
|
---|
| 433 | * called at system boot-up.
|
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| 434 | */
|
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| 435 | void
|
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| 436 | httpd_init(void)
|
---|
| 437 | {
|
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| 438 | uip_listen(HTONS(41314));
|
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| 439 |
|
---|
| 440 | httpd_fs_init();
|
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| 441 | kadecot_names_init();
|
---|
| 442 | }
|
---|
| 443 | /*---------------------------------------------------------------------------*/
|
---|
| 444 | /** @} */
|
---|