1 | /*
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2 | * TOPPERS ECHONET Lite Communication Middleware
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3 | *
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4 | * Copyright (C) 2017 Cores Co., Ltd. Japan
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5 | *
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6 | * ä¸è¨èä½æ¨©è
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7 | ã¯ï¼ä»¥ä¸ã®(1)ï½(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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8 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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9 | * å¤ã»åé
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10 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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11 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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12 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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13 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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14 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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15 | * ç¨ã§ããå½¢ã§åé
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16 | å¸ããå ´åã«ã¯ï¼åé
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17 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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18 | * è
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19 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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20 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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21 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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22 | * ç¨ã§ããªãå½¢ã§åé
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23 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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24 | * ã¨ï¼
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25 | * (a) åé
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26 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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27 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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28 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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29 | * (b) åé
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30 | å¸ã®å½¢æ
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31 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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32 | * å ±åãããã¨ï¼
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33 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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34 | * 害ãããï¼ä¸è¨èä½æ¨©è
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35 | ããã³TOPPERSããã¸ã§ã¯ããå
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36 | 責ãããã¨ï¼
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37 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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38 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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39 | ããã³TOPPERSããã¸ã§ã¯ãã
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40 | * å
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41 | 責ãããã¨ï¼
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42 | *
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43 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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44 | ã
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45 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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46 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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47 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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48 | * ã®è²¬ä»»ãè² ããªãï¼
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49 | *
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50 | * @(#) $Id: httpd.c 270 2017-02-09 04:03:47Z coas-nagasima $
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51 | */
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52 |
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53 | #include "httpd.h"
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54 | #include <string.h>
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55 | #include <stdlib.h>
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56 | #include "syssvc/syslog.h"
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57 | #include "http-strings.h"
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58 | #include "netinet/in.h"
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59 | #include "arduino.h"
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60 |
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61 | #define TRUE 1
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62 | #define FALSE 0
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63 |
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64 | #ifndef _MSC_VER
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65 | /* strnlen() is a POSIX.2008 addition. Can't rely on it being available so
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66 | * define it ourselves.
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67 | */
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68 | size_t
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69 | strnlen(const char *s, size_t maxlen)
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70 | {
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71 | const char *p;
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72 |
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73 | p = memchr(s, '\0', maxlen);
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74 | if (p == NULL)
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75 | return maxlen;
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76 |
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77 | return p - s;
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78 | }
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79 |
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80 | void strcpy_s(char *dst, int size, const char *src)
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81 | {
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82 | int slen = strlen(src);
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83 | if (slen >= size)
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84 | slen = size - 1;
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85 | memcpy(dst, src, slen);
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86 | dst[slen] = '\0';
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87 | }
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88 |
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89 | void strcat_s(char *dst, int size, const char *src)
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90 | {
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91 | int dlen = strlen(dst);
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92 | int slen = strlen(src);
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93 | if (dlen + slen >= size)
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94 | slen = size - 1 - dlen;
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95 | memcpy(&dst[dlen], src, slen);
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96 | dst[dlen + slen] = '\0';
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97 | }
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98 | #endif
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99 |
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100 | int httpd_strnicmp(const char *s1, const char *s2, size_t n)
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101 | {
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102 | int i;
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103 | char c1, c2;
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104 |
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105 | for (i = 0; i < n; i++, s1++, s2++) {
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106 | c1 = *s1;
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107 | c2 = *s2;
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108 | if (c1 == '\0' && c2 == '\0')
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109 | return 0;
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110 |
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111 | if (c1 >= 'a' && c1 <= 'z')
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112 | c1 += 'A' - 'a';
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113 |
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114 | if (c2 >= 'a' && c2 <= 'z')
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115 | c2 += 'A' - 'a';
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116 |
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117 | if (c1 < c2)
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118 | return -1;
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119 |
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120 | if (c1 > c2)
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121 | return 1;
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122 | }
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123 |
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124 | return 0;
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125 | }
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126 |
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127 | size_t
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128 | strlncat(char *dst, size_t len, const char *src, size_t n)
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129 | {
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130 | size_t slen;
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131 | size_t dlen;
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132 | size_t rlen;
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133 | size_t ncpy = 0;
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134 |
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135 | slen = strnlen(src, n);
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136 | dlen = strnlen(dst, len);
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137 |
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138 | if (dlen < len) {
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139 | rlen = len - dlen;
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140 | ncpy = slen < rlen ? slen : (rlen - 1);
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141 | memcpy(dst + dlen, src, ncpy);
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142 | dst[dlen + ncpy] = '\0';
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143 | }
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144 |
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145 | //assert(len > slen + dlen);
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146 | //return slen + dlen;
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147 | return ncpy;
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148 | }
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149 |
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150 | extern struct httpd_state *uploding;
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151 |
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152 | int websvr_message_begin(http_parser *p)
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153 | {
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154 | struct httpd_state *s = get_context(p);
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155 | memset(&s->message, 0, sizeof(s->message));
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156 | s->message.message_begin_cb_called = TRUE;
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157 | return 0;
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158 | }
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159 |
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160 | int websvr_request_url(http_parser *p, const char *buf, size_t len)
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161 | {
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162 | struct httpd_state *s = get_context(p);
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163 |
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164 | strlncat(s->message.request_url, sizeof(s->message.request_url), buf, len);
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165 |
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166 | char *ptr = strrchr(s->message.request_url, '?');
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167 | if (ptr != NULL) {
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168 | ptr[0] = '\0';
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169 | s->query = &ptr[1];
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170 | }
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171 | else
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172 | s->query = NULL;
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173 |
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174 | /* ""ã"/"ãªã"index.html"ã«å¤æ´ */
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175 | if ((s->message.request_url[0] == '\0') || ((s->message.request_url[0] == '/') && (s->message.request_url[1] == '\0'))) {
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176 | s->filename = &s->message.filename[sizeof(s->message.filename) - 2];
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177 | strcpy_s(s->filename, sizeof(s->message.request_url) + 2, "0:");
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178 | strcat_s(s->filename, sizeof(s->message.request_url) + 2, http_index_html);
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179 | s->file.redirect = 1;
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180 | }
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181 | /* "/~/"ãªãSDã«ã¼ãããèªã¿è¾¼ã¿ */
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182 | else if ((s->message.request_url[0] == '/') && (s->message.request_url[1] == '~') && (s->message.request_url[2] == '/')) {
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183 | s->filename = &s->message.filename[sizeof(s->message.filename) - 2 - sizeof(http_www) - 1 + 2];
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184 | memcpy(s->filename, "1:", 2);
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185 | memcpy(s->filename, http_www, sizeof(http_www) - 1);
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186 | }
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187 | else {
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188 | s->filename = &s->message.filename[sizeof(s->message.filename) - 2];
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189 | memcpy(s->filename, "0:", 2);
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190 | }
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191 | return 0;
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192 | }
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193 |
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194 | int websvr_response_status(http_parser *p, const char *buf, size_t len)
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195 | {
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196 | struct httpd_state *s = get_context(p);
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197 |
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198 | strlncat(s->message.response_status, sizeof(s->message.response_status), buf, len);
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199 |
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200 | return 0;
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201 | }
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202 |
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203 | int websvr_header_field(http_parser *p, const char *buf, size_t len)
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204 | {
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205 | struct httpd_state *s = get_context(p);
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206 | struct message *m = &s->message;
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207 |
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208 | if (strncmp("Referer", buf, len) == 0) {
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209 | m->num_headers = 1;
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210 | }
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211 | else if (strncmp("Host", buf, len) == 0) {
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212 | m->num_headers = 2;
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213 | }
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214 | else if (strncmp("Upgrade", buf, len) == 0) {
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215 | m->num_headers = 3;
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216 | }
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217 | else if (strncmp("Connection", buf, len) == 0) {
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218 | m->num_headers = 4;
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219 | }
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220 | else if (strncmp("Sec-WebSocket-Key", buf, len) == 0) {
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221 | m->num_headers = 5;
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222 | }
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223 | else if (strncmp("Origin", buf, len) == 0) {
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224 | m->num_headers = 6;
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225 | }
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226 | else if (strncmp("Sec-WebSocket-Protocol", buf, len) == 0) {
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227 | m->num_headers = 7;
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228 | }
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229 | else if (strncmp("Sec-WebSocket-Version", buf, len) == 0) {
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230 | m->num_headers = 8;
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231 | }
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232 | else {
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233 | m->num_headers = 0;
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234 | }
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235 |
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236 | return 0;
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237 | }
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238 |
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239 | int websvr_header_value(http_parser *p, const char *buf, size_t len)
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240 | {
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241 | struct httpd_state *s = get_context(p);
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242 | struct message *m = &s->message;
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243 |
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244 | switch (m->num_headers) {
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245 | case 1:
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246 | strlncat(m->referer, sizeof(m->referer), buf, len);
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247 | break;
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248 | case 2:
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249 | strlncat(m->host, sizeof(m->host), buf, len);
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250 | break;
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251 | case 3:
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252 | strlncat(m->upgrade, sizeof(m->upgrade), buf, len);
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253 | break;
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254 | case 4:
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255 | strlncat(m->connection, sizeof(m->connection), buf, len);
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256 | break;
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257 | case 5:
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258 | strlncat(m->sec_websocket_key, sizeof(m->sec_websocket_key), buf, len);
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259 | break;
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260 | case 6:
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261 | strlncat(m->origin, sizeof(m->origin), buf, len);
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262 | break;
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263 | case 7:
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264 | strlncat(m->sec_websocket_protocol, sizeof(m->sec_websocket_protocol), buf, len);
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265 | break;
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266 | case 8:
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267 | strlncat(m->sec_websocket_version, sizeof(m->sec_websocket_version), buf, len);
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268 | break;
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269 | }
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270 |
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271 | return 0;
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272 | }
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273 |
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274 | int websvr_headers_complete(http_parser *p)
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275 | {
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276 | struct httpd_state *s = get_context(p);
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277 |
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278 | s->message.method = p->method;
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279 | s->message.http_major = p->http_major;
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280 | s->message.http_minor = p->http_minor;
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281 | s->message.headers_complete_cb_called = TRUE;
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282 | s->message.should_keep_alive = http_should_keep_alive(p);
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283 |
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284 | if ((s->message.method == HTTP_GET)
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285 | && httpd_strnicmp(http_websocket, s->message.upgrade, sizeof(s->message.upgrade)) == 0) {
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286 | s->in.state = IN_STATE_WEBSOCKET;
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287 | s->state = STATE_WEBSOCKET;
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288 | s->close_req = 0;
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289 | websocket_init(&s->websocket, s->cepid);
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290 | return 0;
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291 | }
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292 | else if (s->message.method == HTTP_GET) {
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293 | s->in.state = IN_STATE_RESPONSE;
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294 | s->out.state = OUT_STATE_OPEN_GET_FILE;
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295 | return 1;
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296 | }
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297 | else if (s->message.method == HTTP_POST) {
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298 | if ((s->parser.content_length > 16 * 1024)
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299 | || httpd_strnicmp(s->message.request_url, http_upload, sizeof(http_upload) - 1) != 0) {
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300 | goto error;
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301 | }
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302 |
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303 | if (uploding == NULL) {
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304 | uploding = s;
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305 | // ã¢ãããã¼ãå
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306 | ã¯SDã«ã¼ã
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307 | s->filename[0] = '1';
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308 | syslog(LOG_NOTICE, "create: %s.%d %s", s->addr, ((T_IPV4EP *)s->dst)->portno, s->filename);
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309 | if (!httpd_fs_create(s->filename, &s->file)) {
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310 | goto error;
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311 | }
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312 |
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313 | s->in.state = IN_STATE_UPLOAD;
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314 | }
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315 | else if (strcmp(s->filename, uploding->filename) == 0) {
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316 | syslog(LOG_NOTICE, "collision: %s.%d %s", s->addr, ((T_IPV4EP *)s->dst)->portno, s->filename);
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317 | goto error;
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318 | }
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319 | else {
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320 | s->in.state = IN_STATE_UPLOAD_WAIT;
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321 | s->in.wait = true;
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322 | }
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323 |
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324 | s->out.state = OUT_STATE_WAIT_POST_BODY;
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325 | s->out.wait = true;
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326 | return 0;
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327 | }
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328 | else {
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329 | s->state = STATE_CLOSING;
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330 | return 1;
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331 | }
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332 | error:
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333 | s->filename = NULL;
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334 | s->response_body = http_content_403;
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335 | s->response_pos = 0;
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336 | s->response_len = sizeof(http_content_403) - 1;
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337 |
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338 | s->out.statushdr = http_header_403;
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339 | s->out.state = OUT_STATE_SEND_HEADER;
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340 | return 1;
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341 | }
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342 |
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343 | int websvr_body(http_parser *p, const char *buf, size_t len)
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344 | {
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345 | struct httpd_state *s = get_context(p);
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346 |
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347 | if (s->message.body_is_final) {
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348 | syslog(LOG_ERROR, "\n\n *** Error http_body_is_final() should return 1 "
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349 | "on last on_body callback call "
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350 | "but it doesn't! ***\n\n");
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351 | s->state = STATE_CLOSING;
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352 | return 0;
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353 | }
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354 |
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355 | httpd_fs_write(&s->file, buf, len);
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356 |
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357 | s->message.body_size += len;
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358 | s->message.body_is_final = http_body_is_final(p);
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359 |
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360 | if (s->message.body_is_final) {
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361 | syslog(LOG_NOTICE, "close: %s.%d %s", s->addr, ((T_IPV4EP *)s->dst)->portno, s->filename);
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362 | httpd_fs_close(&s->file);
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363 | memset(&s->file, 0, sizeof(s->file));
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364 |
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365 | strcpy_s(RubyFilename, sizeof(RubyFilename), s->filename);
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366 | s->reset = 1;
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367 |
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368 | s->filename = NULL;
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369 | s->response_body = http_content_200;
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370 | s->response_pos = 0;
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371 | s->response_len = sizeof(http_content_200) - 1;
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372 |
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373 | uploding = NULL;
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374 | s->in.state = IN_STATE_END;
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375 | s->out.state = OUT_STATE_BODY_RECEIVED;
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376 | }
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377 |
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378 | return 0;
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379 | }
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380 |
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381 | int websvr_message_complete(http_parser *p)
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382 | {
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383 | struct httpd_state *s = get_context(p);
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384 | if (s->message.should_keep_alive != http_should_keep_alive(p)) {
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385 | syslog(LOG_ERROR, "\n\n *** Error http_should_keep_alive() should have same "
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386 | "value in both on_message_complete and on_headers_complete "
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387 | "but it doesn't! ***\n\n");
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388 | assert(0);
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389 | }
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390 |
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391 | if (s->message.body_size &&
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392 | http_body_is_final(p) &&
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393 | !s->message.body_is_final) {
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394 | syslog(LOG_ERROR, "\n\n *** Error http_body_is_final() should return 1 "
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395 | "on last on_body callback call "
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396 | "but it doesn't! ***\n\n");
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397 | assert(0);
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398 | }
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399 |
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400 | s->message.message_complete_cb_called = TRUE;
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401 | return 0;
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402 | }
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403 |
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404 | http_parser_settings websvr_settings =
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405 | {
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406 | websvr_message_begin,
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407 | websvr_request_url,
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408 | websvr_response_status,
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409 | websvr_header_field,
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410 | websvr_header_value,
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411 | websvr_headers_complete,
|
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412 | websvr_body,
|
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413 | websvr_message_complete,
|
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414 | };
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