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8226
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1
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2 /*
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3 * Copyright (C) Roman Arutyunyan
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12
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13 ngx_int_t
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14 ngx_http_v3_parse_varlen_int(ngx_connection_t *c,
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15 ngx_http_v3_parse_varlen_int_t *st, u_char ch)
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16 {
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17 enum {
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18 sw_start = 0,
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19 sw_length_2,
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20 sw_length_3,
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21 sw_length_4,
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22 sw_length_5,
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23 sw_length_6,
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24 sw_length_7,
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25 sw_length_8
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26 };
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27
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28 switch (st->state) {
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29
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30 case sw_start:
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31
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32 st->value = ch;
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33 if (st->value & 0xc0) {
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34 st->state = sw_length_2;
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35 break;
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36 }
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37
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38 goto done;
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39
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40 case sw_length_2:
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41
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42 st->value = (st->value << 8) + ch;
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43 if ((st->value & 0xc000) == 0x4000) {
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44 st->value &= 0x3fff;
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45 goto done;
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46 }
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47
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48 st->state = sw_length_3;
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49 break;
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50
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51 case sw_length_4:
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52
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53 st->value = (st->value << 8) + ch;
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54 if ((st->value & 0xc0000000) == 0x80000000) {
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55 st->value &= 0x3fffffff;
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56 goto done;
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57 }
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58
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59 st->state = sw_length_5;
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60 break;
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61
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62 case sw_length_3:
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63 case sw_length_5:
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64 case sw_length_6:
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65 case sw_length_7:
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66
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67 st->value = (st->value << 8) + ch;
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68 st->state++;
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69 break;
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70
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71 case sw_length_8:
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72
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73 st->value = (st->value << 8) + ch;
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74 st->value &= 0x3fffffffffffffff;
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75 goto done;
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76 }
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77
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78 return NGX_AGAIN;
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79
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80 done:
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81
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82 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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83 "http3 parse varlen int %uL", st->value);
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84
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85 st->state = sw_start;
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86 return NGX_DONE;
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87 }
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88
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89
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90 ngx_int_t
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91 ngx_http_v3_parse_prefix_int(ngx_connection_t *c,
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92 ngx_http_v3_parse_prefix_int_t *st, ngx_uint_t prefix, u_char ch)
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93 {
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94 enum {
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95 sw_start = 0,
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96 sw_value
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97 };
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98
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99 switch (st->state) {
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100
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101 case sw_start:
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102
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103 st->mask = (1 << prefix) - 1;
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104 st->value = (ch & st->mask);
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105
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106 if (st->value != st->mask) {
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107 goto done;
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108 }
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109
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110 st->value = 0;
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111 st->state = sw_value;
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112 break;
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113
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114 case sw_value:
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115
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116 st->value = (st->value << 7) + (ch & 0x7f);
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117 if (ch & 0x80) {
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118 break;
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119 }
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120
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121 st->value += st->mask;
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122 goto done;
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123 }
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124
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125 return NGX_AGAIN;
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126
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127 done:
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128
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129 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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130 "http3 parse prefix int %uL", st->value);
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131
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132 st->state = sw_start;
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133 return NGX_DONE;
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134 }
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135
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136
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137 ngx_int_t
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138 ngx_http_v3_parse_headers(ngx_connection_t *c, ngx_http_v3_parse_headers_t *st,
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139 u_char ch)
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140 {
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141 ngx_int_t rc;
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142 enum {
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143 sw_start = 0,
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144 sw_length,
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145 sw_prefix,
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146 sw_header_rep,
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147 sw_done
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148 };
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149
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150 switch (st->state) {
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151
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152 case sw_start:
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153
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154 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse headers");
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155
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156 if (ch != NGX_HTTP_V3_FRAME_HEADERS) {
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157 return NGX_ERROR;
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158 }
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159
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160 st->state = sw_length;
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161 break;
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162
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163 case sw_length:
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164
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165 if (ngx_http_v3_parse_varlen_int(c, &st->vlint, ch) != NGX_DONE) {
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166 break;
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167 }
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168
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169 st->length = st->vlint.value;
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170
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171 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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172 "http3 parse headers len:%ui", st->length);
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173
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174 st->state = sw_prefix;
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175 break;
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176
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177 case sw_prefix:
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178
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179 if (st->length-- == 0) {
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180 return NGX_ERROR;
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181 }
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182
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183 rc = ngx_http_v3_parse_header_block_prefix(c, &st->prefix, ch);
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184
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185 if (rc == NGX_ERROR) {
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186 return NGX_ERROR;
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187 }
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188
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189 if (rc != NGX_DONE) {
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190 break;
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191 }
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192
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193 if (st->length == 0) {
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194 return NGX_ERROR;
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195 }
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196
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197 st->state = sw_header_rep;
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198 break;
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199
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200 case sw_header_rep:
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201
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202 rc = ngx_http_v3_parse_header_rep(c, &st->header_rep, st->prefix.base,
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203 ch);
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204
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205 if (rc == NGX_ERROR) {
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206 return NGX_ERROR;
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207 }
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208
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209 if (--st->length == 0) {
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210 if (rc != NGX_DONE) {
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211 return NGX_ERROR;
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212 }
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213
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214 goto done;
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215 }
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216
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217 if (rc == NGX_DONE) {
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218 return NGX_OK;
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219 }
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220
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221 break;
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222 }
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223
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224 return NGX_AGAIN;
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225
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226 done:
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227
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228 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse headers done");
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229
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230 st->state = sw_start;
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231 return NGX_DONE;
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232 }
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233
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234
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235 ngx_int_t
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236 ngx_http_v3_parse_header_block_prefix(ngx_connection_t *c,
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237 ngx_http_v3_parse_header_block_prefix_t *st, u_char ch)
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238 {
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239 enum {
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240 sw_start = 0,
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241 sw_req_insert_count,
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242 sw_delta_base,
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243 sw_read_delta_base
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244 };
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245
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246 switch (st->state) {
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247
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248 case sw_start:
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249
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250 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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251 "http3 parse header block prefix");
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252
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253 st->state = sw_req_insert_count;
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254
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255 /* fall through */
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256
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257 case sw_req_insert_count:
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258
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259 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 8, ch) != NGX_DONE) {
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260 break;
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261 }
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262
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263 st->insert_count = st->pint.value;
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264 st->state = sw_delta_base;
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265 break;
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266
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267 case sw_delta_base:
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268
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269 st->sign = (ch & 0x80) ? 1 : 0;
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270 st->state = sw_read_delta_base;
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271
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272 /* fall through */
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273
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274 case sw_read_delta_base:
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275
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276 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 7, ch) != NGX_DONE) {
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277 break;
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278 }
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279
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280 st->delta_base = st->pint.value;
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281 goto done;
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282 }
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283
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284 return NGX_AGAIN;
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285
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286 done:
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287
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288 if (st->sign) {
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289 st->base = st->insert_count - st->delta_base - 1;
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290 } else {
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291 st->base = st->insert_count + st->delta_base;
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292 }
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293
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294 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0,
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295 "http3 parse header block prefix done "
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296 "i:%ui, s:%ui, d:%ui, base:%uL",
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297 st->insert_count, st->sign, st->delta_base, st->base);
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298
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299 st->state = sw_start;
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300 return NGX_DONE;
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301 }
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302
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303
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304 ngx_int_t
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305 ngx_http_v3_parse_header_rep(ngx_connection_t *c,
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306 ngx_http_v3_parse_header_rep_t *st, ngx_uint_t base, u_char ch)
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307 {
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308 ngx_int_t rc;
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309 enum {
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310 sw_start = 0,
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311 sw_header_ri,
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312 sw_header_lri,
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313 sw_header_l,
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314 sw_header_pbi,
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315 sw_header_lpbi
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316 };
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317
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318 if (st->state == sw_start) {
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319
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320 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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321 "http3 parse header representation");
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322
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323 ngx_memzero(&st->header, sizeof(ngx_http_v3_parse_header_t));
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324
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325 st->header.base = base;
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326
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327 if (ch & 0x80) {
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328 /* Indexed Header Field */
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329
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330 st->state = sw_header_ri;
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331
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332 } else if (ch & 0x40) {
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333 /* Literal Header Field With Name Reference */
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334
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335 st->state = sw_header_lri;
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336
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337 } else if (ch & 0x20) {
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338 /* Literal Header Field Without Name Reference */
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339
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340 st->state = sw_header_l;
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341
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342 } else if (ch & 0x10) {
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343 /* Indexed Header Field With Post-Base Index */
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344
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345 st->state = sw_header_pbi;
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346
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347 } else {
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348 /* Literal Header Field With Post-Base Name Reference */
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349
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350 st->state = sw_header_lpbi;
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351 }
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352 }
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353
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354 switch (st->state) {
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355
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356 case sw_header_ri:
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357 rc = ngx_http_v3_parse_header_ri(c, &st->header, ch);
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358 break;
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359
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360 case sw_header_lri:
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361 rc = ngx_http_v3_parse_header_lri(c, &st->header, ch);
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362 break;
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363
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364 case sw_header_l:
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365 rc = ngx_http_v3_parse_header_l(c, &st->header, ch);
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366 break;
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367
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368 case sw_header_pbi:
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369 rc = ngx_http_v3_parse_header_pbi(c, &st->header, ch);
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370 break;
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371
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372 case sw_header_lpbi:
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373 rc = ngx_http_v3_parse_header_lpbi(c, &st->header, ch);
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374 break;
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375
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376 default:
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377 rc = NGX_OK;
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378 }
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379
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380 if (rc == NGX_ERROR) {
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381 return NGX_ERROR;
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382 }
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383
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384 if (rc == NGX_AGAIN) {
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385 return NGX_AGAIN;
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386 }
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387
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388 /* rc == NGX_DONE */
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389
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390 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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391 "http3 parse header representation done");
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392
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393 st->state = sw_start;
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394 return NGX_DONE;
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395 }
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396
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397
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398 ngx_int_t
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399 ngx_http_v3_parse_literal(ngx_connection_t *c, ngx_http_v3_parse_literal_t *st,
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400 u_char ch)
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401 {
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402 ngx_uint_t n;
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403 enum {
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404 sw_start = 0,
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405 sw_value
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406 };
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407
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408 switch (st->state) {
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409
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410 case sw_start:
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411
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412 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
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413 "http3 parse literal huff:%ui, len:%ui",
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414 st->huffman, st->length);
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415
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416 n = st->length;
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417
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418 if (st->huffman) {
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419 n = n * 8 / 5;
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420 st->huffstate = 0;
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421 }
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422
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423 st->last = ngx_pnalloc(c->pool, n + 1);
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424 if (st->last == NULL) {
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425 return NGX_ERROR;
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426 }
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427
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428 st->value.data = st->last;
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429 st->state = sw_value;
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430
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431 /* fall through */
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432
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433 case sw_value:
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434
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435 if (st->huffman) {
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436 if (ngx_http_v2_huff_decode(&st->huffstate, &ch, 1, &st->last,
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437 st->length == 1, c->log)
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438 != NGX_OK)
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439 {
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440 return NGX_ERROR;
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441 }
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442
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443 } else {
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444 *st->last++ = ch;
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445 }
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446
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447 if (--st->length) {
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448 break;
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449 }
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450
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451 st->value.len = st->last - st->value.data;
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452 *st->last = '\0';
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453 goto done;
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454 }
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455
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456 return NGX_AGAIN;
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457
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458 done:
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|
|
459
|
|
|
460 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
461 "http3 parse literal done \"%V\"", &st->value);
|
|
|
462
|
|
|
463 st->state = sw_start;
|
|
|
464 return NGX_DONE;
|
|
|
465 }
|
|
|
466
|
|
|
467
|
|
|
468 ngx_int_t
|
|
|
469 ngx_http_v3_parse_header_ri(ngx_connection_t *c, ngx_http_v3_parse_header_t *st,
|
|
|
470 u_char ch)
|
|
|
471 {
|
|
|
472 ngx_http_v3_header_t *h;
|
|
|
473 enum {
|
|
|
474 sw_start = 0,
|
|
|
475 sw_index
|
|
|
476 };
|
|
|
477
|
|
|
478 switch (st->state) {
|
|
|
479
|
|
|
480 case sw_start:
|
|
|
481
|
|
|
482 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header ri");
|
|
|
483
|
|
|
484 st->dynamic = (ch & 0x40) ? 0 : 1;
|
|
|
485 st->state = sw_index;
|
|
|
486
|
|
|
487 /* fall through */
|
|
|
488
|
|
|
489 case sw_index:
|
|
|
490
|
|
|
491 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 6, ch) != NGX_DONE) {
|
|
|
492 break;
|
|
|
493 }
|
|
|
494
|
|
|
495 st->index = st->pint.value;
|
|
|
496 goto done;
|
|
|
497 }
|
|
|
498
|
|
|
499 return NGX_AGAIN;
|
|
|
500
|
|
|
501 done:
|
|
|
502
|
|
|
503 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
504 "http3 parse header ri done %s%ui]",
|
|
|
505 st->dynamic ? "dynamic[-" : "static[", st->index);
|
|
|
506
|
|
|
507 if (st->dynamic) {
|
|
|
508 st->index = st->base - st->index - 1;
|
|
|
509 }
|
|
|
510
|
|
|
511 h = ngx_http_v3_lookup_table(c, st->dynamic, st->index);
|
|
|
512 if (h == NULL) {
|
|
|
513 return NGX_ERROR;
|
|
|
514 }
|
|
|
515
|
|
|
516 st->name = h->name;
|
|
|
517 st->value = h->value;
|
|
|
518 st->state = sw_start;
|
|
|
519
|
|
|
520 return NGX_DONE;
|
|
|
521 }
|
|
|
522
|
|
|
523
|
|
|
524 ngx_int_t
|
|
|
525 ngx_http_v3_parse_header_lri(ngx_connection_t *c,
|
|
|
526 ngx_http_v3_parse_header_t *st, u_char ch)
|
|
|
527 {
|
|
|
528 ngx_int_t rc;
|
|
|
529 ngx_http_v3_header_t *h;
|
|
|
530 enum {
|
|
|
531 sw_start = 0,
|
|
|
532 sw_index,
|
|
|
533 sw_value_len,
|
|
|
534 sw_read_value_len,
|
|
|
535 sw_value
|
|
|
536 };
|
|
|
537
|
|
|
538 switch (st->state) {
|
|
|
539
|
|
|
540 case sw_start:
|
|
|
541
|
|
|
542 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header lri");
|
|
|
543
|
|
|
544 st->dynamic = (ch & 0x10) ? 0 : 1;
|
|
|
545 st->state = sw_index;
|
|
|
546
|
|
|
547 /* fall through */
|
|
|
548
|
|
|
549 case sw_index:
|
|
|
550
|
|
|
551 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 4, ch) != NGX_DONE) {
|
|
|
552 break;
|
|
|
553 }
|
|
|
554
|
|
|
555 st->index = st->pint.value;
|
|
|
556 st->state = sw_value_len;
|
|
|
557 break;
|
|
|
558
|
|
|
559 case sw_value_len:
|
|
|
560
|
|
|
561 st->literal.huffman = (ch & 0x80) ? 1 : 0;
|
|
|
562 st->state = sw_read_value_len;
|
|
|
563
|
|
|
564 /* fall through */
|
|
|
565
|
|
|
566 case sw_read_value_len:
|
|
|
567
|
|
|
568 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 7, ch) != NGX_DONE) {
|
|
|
569 break;
|
|
|
570 }
|
|
|
571
|
|
|
572 st->literal.length = st->pint.value;
|
|
|
573 if (st->literal.length == 0) {
|
|
|
574 goto done;
|
|
|
575 }
|
|
|
576
|
|
|
577 st->state = sw_value;
|
|
|
578 break;
|
|
|
579
|
|
|
580 case sw_value:
|
|
|
581
|
|
|
582 rc = ngx_http_v3_parse_literal(c, &st->literal, ch);
|
|
|
583
|
|
|
584 if (rc == NGX_ERROR) {
|
|
|
585 return NGX_ERROR;
|
|
|
586 }
|
|
|
587
|
|
|
588 if (rc == NGX_DONE) {
|
|
|
589 st->value = st->literal.value;
|
|
|
590 goto done;
|
|
|
591 }
|
|
|
592
|
|
|
593 break;
|
|
|
594 }
|
|
|
595
|
|
|
596 return NGX_AGAIN;
|
|
|
597
|
|
|
598 done:
|
|
|
599
|
|
|
600 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
601 "http3 parse header lri done %s%ui] \"%V\"",
|
|
|
602 st->dynamic ? "dynamic[-" : "static[",
|
|
|
603 st->index, &st->value);
|
|
|
604
|
|
|
605 if (st->dynamic) {
|
|
|
606 st->index = st->base - st->index - 1;
|
|
|
607 }
|
|
|
608
|
|
|
609 h = ngx_http_v3_lookup_table(c, st->dynamic, st->index);
|
|
|
610 if (h == NULL) {
|
|
|
611 return NGX_ERROR;
|
|
|
612 }
|
|
|
613
|
|
|
614 st->name = h->name;
|
|
|
615 st->state = sw_start;
|
|
|
616 return NGX_DONE;
|
|
|
617 }
|
|
|
618
|
|
|
619
|
|
|
620 ngx_int_t
|
|
|
621 ngx_http_v3_parse_header_l(ngx_connection_t *c,
|
|
|
622 ngx_http_v3_parse_header_t *st, u_char ch)
|
|
|
623 {
|
|
|
624 ngx_int_t rc;
|
|
|
625 enum {
|
|
|
626 sw_start = 0,
|
|
|
627 sw_name_len,
|
|
|
628 sw_name,
|
|
|
629 sw_value_len,
|
|
|
630 sw_read_value_len,
|
|
|
631 sw_value
|
|
|
632 };
|
|
|
633
|
|
|
634 switch (st->state) {
|
|
|
635
|
|
|
636 case sw_start:
|
|
|
637
|
|
|
638 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header l");
|
|
|
639
|
|
|
640 st->literal.huffman = (ch & 0x08) ? 1 : 0;
|
|
|
641 st->state = sw_name_len;
|
|
|
642
|
|
|
643 /* fall through */
|
|
|
644
|
|
|
645 case sw_name_len:
|
|
|
646
|
|
|
647 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 3, ch) != NGX_DONE) {
|
|
|
648 break;
|
|
|
649 }
|
|
|
650
|
|
|
651 st->literal.length = st->pint.value;
|
|
|
652 if (st->literal.length == 0) {
|
|
|
653 return NGX_ERROR;
|
|
|
654 }
|
|
|
655
|
|
|
656 st->state = sw_name;
|
|
|
657 break;
|
|
|
658
|
|
|
659 case sw_name:
|
|
|
660
|
|
|
661 rc = ngx_http_v3_parse_literal(c, &st->literal, ch);
|
|
|
662
|
|
|
663 if (rc == NGX_ERROR) {
|
|
|
664 return NGX_ERROR;
|
|
|
665 }
|
|
|
666
|
|
|
667 if (rc == NGX_DONE) {
|
|
|
668 st->name = st->literal.value;
|
|
|
669 st->state = sw_value_len;
|
|
|
670 }
|
|
|
671
|
|
|
672 break;
|
|
|
673
|
|
|
674 case sw_value_len:
|
|
|
675
|
|
|
676 st->literal.huffman = (ch & 0x80) ? 1 : 0;
|
|
|
677 st->state = sw_read_value_len;
|
|
|
678
|
|
|
679 /* fall through */
|
|
|
680
|
|
|
681 case sw_read_value_len:
|
|
|
682
|
|
|
683 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 7, ch) != NGX_DONE) {
|
|
|
684 break;
|
|
|
685 }
|
|
|
686
|
|
|
687 st->literal.length = st->pint.value;
|
|
|
688 if (st->literal.length == 0) {
|
|
|
689 goto done;
|
|
|
690 }
|
|
|
691
|
|
|
692 st->state = sw_value;
|
|
|
693 break;
|
|
|
694
|
|
|
695 case sw_value:
|
|
|
696
|
|
|
697 rc = ngx_http_v3_parse_literal(c, &st->literal, ch);
|
|
|
698
|
|
|
699 if (rc == NGX_ERROR) {
|
|
|
700 return NGX_ERROR;
|
|
|
701 }
|
|
|
702
|
|
|
703 if (rc == NGX_DONE) {
|
|
|
704 st->value = st->literal.value;
|
|
|
705 goto done;
|
|
|
706 }
|
|
|
707
|
|
|
708 break;
|
|
|
709 }
|
|
|
710
|
|
|
711 return NGX_AGAIN;
|
|
|
712
|
|
|
713 done:
|
|
|
714
|
|
|
715 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
716 "http3 parse header l done \"%V\" \"%V\"",
|
|
|
717 &st->name, &st->value);
|
|
|
718
|
|
|
719 st->state = sw_start;
|
|
|
720 return NGX_DONE;
|
|
|
721 }
|
|
|
722
|
|
|
723
|
|
|
724 ngx_int_t
|
|
|
725 ngx_http_v3_parse_header_pbi(ngx_connection_t *c,
|
|
|
726 ngx_http_v3_parse_header_t *st, u_char ch)
|
|
|
727 {
|
|
|
728 ngx_http_v3_header_t *h;
|
|
|
729 enum {
|
|
|
730 sw_start = 0,
|
|
|
731 sw_index
|
|
|
732 };
|
|
|
733
|
|
|
734 switch (st->state) {
|
|
|
735
|
|
|
736 case sw_start:
|
|
|
737
|
|
|
738 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header pbi");
|
|
|
739
|
|
|
740 st->state = sw_index;
|
|
|
741
|
|
|
742 /* fall through */
|
|
|
743
|
|
|
744 case sw_index:
|
|
|
745
|
|
|
746 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 4, ch) != NGX_DONE) {
|
|
|
747 break;
|
|
|
748 }
|
|
|
749
|
|
|
750 st->index = st->pint.value;
|
|
|
751 goto done;
|
|
|
752 }
|
|
|
753
|
|
|
754 return NGX_AGAIN;
|
|
|
755
|
|
|
756 done:
|
|
|
757
|
|
|
758 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
759 "http3 parse header pbi done dynamic[+%ui]", st->index);
|
|
|
760
|
|
|
761 h = ngx_http_v3_lookup_table(c, 1, st->base + st->index);
|
|
|
762 if (h == NULL) {
|
|
|
763 return NGX_ERROR;
|
|
|
764 }
|
|
|
765
|
|
|
766 st->name = h->name;
|
|
|
767 st->value = h->value;
|
|
|
768 st->state = sw_start;
|
|
|
769 return NGX_DONE;
|
|
|
770 }
|
|
|
771
|
|
|
772
|
|
|
773 ngx_int_t
|
|
|
774 ngx_http_v3_parse_header_lpbi(ngx_connection_t *c,
|
|
|
775 ngx_http_v3_parse_header_t *st, u_char ch)
|
|
|
776 {
|
|
|
777 ngx_int_t rc;
|
|
|
778 ngx_http_v3_header_t *h;
|
|
|
779 enum {
|
|
|
780 sw_start = 0,
|
|
|
781 sw_index,
|
|
|
782 sw_value_len,
|
|
|
783 sw_read_value_len,
|
|
|
784 sw_value
|
|
|
785 };
|
|
|
786
|
|
|
787 switch (st->state) {
|
|
|
788
|
|
|
789 case sw_start:
|
|
|
790
|
|
|
791 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
792 "http3 parse header lpbi");
|
|
|
793
|
|
|
794 st->state = sw_index;
|
|
|
795
|
|
|
796 /* fall through */
|
|
|
797
|
|
|
798 case sw_index:
|
|
|
799
|
|
|
800 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 3, ch) != NGX_DONE) {
|
|
|
801 break;
|
|
|
802 }
|
|
|
803
|
|
|
804 st->index = st->pint.value;
|
|
|
805 st->state = sw_value_len;
|
|
|
806 break;
|
|
|
807
|
|
|
808 case sw_value_len:
|
|
|
809
|
|
|
810 st->literal.huffman = (ch & 0x80) ? 1 : 0;
|
|
|
811 st->state = sw_read_value_len;
|
|
|
812
|
|
|
813 /* fall through */
|
|
|
814
|
|
|
815 case sw_read_value_len:
|
|
|
816
|
|
|
817 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 7, ch) != NGX_DONE) {
|
|
|
818 break;
|
|
|
819 }
|
|
|
820
|
|
|
821 st->literal.length = st->pint.value;
|
|
|
822 if (st->literal.length == 0) {
|
|
|
823 goto done;
|
|
|
824 }
|
|
|
825
|
|
|
826 st->state = sw_value;
|
|
|
827 break;
|
|
|
828
|
|
|
829 case sw_value:
|
|
|
830
|
|
|
831 rc = ngx_http_v3_parse_literal(c, &st->literal, ch);
|
|
|
832
|
|
|
833 if (rc == NGX_ERROR) {
|
|
|
834 return NGX_ERROR;
|
|
|
835 }
|
|
|
836
|
|
|
837 if (rc == NGX_DONE) {
|
|
|
838 st->value = st->literal.value;
|
|
|
839 goto done;
|
|
|
840 }
|
|
|
841
|
|
|
842 break;
|
|
|
843 }
|
|
|
844
|
|
|
845 return NGX_AGAIN;
|
|
|
846
|
|
|
847 done:
|
|
|
848
|
|
|
849 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
850 "http3 parse header lpbi done dynamic[+%ui] \"%V\"",
|
|
|
851 st->index, &st->value);
|
|
|
852
|
|
|
853 h = ngx_http_v3_lookup_table(c, 1, st->base + st->index);
|
|
|
854 if (h == NULL) {
|
|
|
855 return NGX_ERROR;
|
|
|
856 }
|
|
|
857
|
|
|
858 st->name = h->name;
|
|
|
859 st->state = sw_start;
|
|
|
860 return NGX_DONE;
|
|
|
861 }
|
|
|
862
|
|
|
863
|
|
|
864 ngx_int_t
|
|
|
865 ngx_http_v3_parse_control(ngx_connection_t *c, void *data, u_char ch)
|
|
|
866 {
|
|
|
867 ngx_http_v3_parse_control_t *st = data;
|
|
|
868
|
|
|
869 ngx_int_t rc;
|
|
|
870 enum {
|
|
|
871 sw_start = 0,
|
|
|
872 sw_type,
|
|
|
873 sw_length,
|
|
|
874 sw_settings,
|
|
|
875 sw_max_push_id,
|
|
|
876 sw_skip
|
|
|
877 };
|
|
|
878
|
|
|
879 switch (st->state) {
|
|
|
880
|
|
|
881 case sw_start:
|
|
|
882
|
|
|
883 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse control");
|
|
|
884
|
|
|
885 st->state = sw_type;
|
|
|
886
|
|
|
887 /* fall through */
|
|
|
888
|
|
|
889 case sw_type:
|
|
|
890
|
|
|
891 if (ngx_http_v3_parse_varlen_int(c, &st->vlint, ch) != NGX_DONE) {
|
|
|
892 break;
|
|
|
893 }
|
|
|
894
|
|
|
895 st->type = st->vlint.value;
|
|
|
896
|
|
|
897 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
898 "http3 parse frame type:%ui", st->type);
|
|
|
899
|
|
|
900 st->state = sw_length;
|
|
|
901 break;
|
|
|
902
|
|
|
903 case sw_length:
|
|
|
904
|
|
|
905 if (ngx_http_v3_parse_varlen_int(c, &st->vlint, ch) != NGX_DONE) {
|
|
|
906 break;
|
|
|
907 }
|
|
|
908
|
|
|
909 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
910 "http3 parse frame len:%uL", st->vlint.value);
|
|
|
911
|
|
|
912 st->length = st->vlint.value;
|
|
|
913 if (st->length == 0) {
|
|
|
914 st->state = sw_type;
|
|
|
915 break;
|
|
|
916 }
|
|
|
917
|
|
|
918 switch (st->type) {
|
|
|
919
|
|
|
920 case NGX_HTTP_V3_FRAME_SETTINGS:
|
|
|
921 st->state = sw_settings;
|
|
|
922 break;
|
|
|
923
|
|
|
924 case NGX_HTTP_V3_FRAME_MAX_PUSH_ID:
|
|
|
925 st->state = sw_max_push_id;
|
|
|
926 break;
|
|
|
927
|
|
|
928 default:
|
|
|
929 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
930 "http3 parse skip unknown frame");
|
|
|
931 st->state = sw_skip;
|
|
|
932 }
|
|
|
933
|
|
|
934 break;
|
|
|
935
|
|
|
936 case sw_settings:
|
|
|
937
|
|
|
938 rc = ngx_http_v3_parse_settings(c, &st->settings, ch);
|
|
|
939
|
|
|
940 if (rc == NGX_ERROR) {
|
|
|
941 return NGX_ERROR;
|
|
|
942 }
|
|
|
943
|
|
|
944 if (--st->length > 0) {
|
|
|
945 break;
|
|
|
946 }
|
|
|
947
|
|
|
948 if (rc != NGX_DONE) {
|
|
|
949 return NGX_ERROR;
|
|
|
950 }
|
|
|
951
|
|
|
952 st->state = sw_type;
|
|
|
953 break;
|
|
|
954
|
|
|
955 case sw_max_push_id:
|
|
|
956
|
|
|
957 if (ngx_http_v3_parse_varlen_int(c, &st->vlint, ch) != NGX_DONE) {
|
|
|
958 break;
|
|
|
959 }
|
|
|
960
|
|
|
961 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
962 "http3 parse MAX_PUSH_ID:%uL", st->vlint.value);
|
|
|
963
|
|
|
964 st->state = sw_type;
|
|
|
965 break;
|
|
|
966
|
|
|
967 case sw_skip:
|
|
|
968
|
|
|
969 if (--st->length == 0) {
|
|
|
970 st->state = sw_type;
|
|
|
971 }
|
|
|
972
|
|
|
973 break;
|
|
|
974 }
|
|
|
975
|
|
|
976 return NGX_AGAIN;
|
|
|
977 }
|
|
|
978
|
|
|
979
|
|
|
980 ngx_int_t
|
|
|
981 ngx_http_v3_parse_settings(ngx_connection_t *c,
|
|
|
982 ngx_http_v3_parse_settings_t *st, u_char ch)
|
|
|
983 {
|
|
|
984 enum {
|
|
|
985 sw_start = 0,
|
|
|
986 sw_id,
|
|
|
987 sw_value
|
|
|
988 };
|
|
|
989
|
|
|
990 switch (st->state) {
|
|
|
991
|
|
|
992 case sw_start:
|
|
|
993
|
|
|
994 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse settings");
|
|
|
995
|
|
|
996 st->state = sw_id;
|
|
|
997
|
|
|
998 /* fall through */
|
|
|
999
|
|
|
1000 case sw_id:
|
|
|
1001
|
|
|
1002 if (ngx_http_v3_parse_varlen_int(c, &st->vlint, ch) != NGX_DONE) {
|
|
|
1003 break;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 st->id = st->vlint.value;
|
|
|
1007 st->state = sw_value;
|
|
|
1008 break;
|
|
|
1009
|
|
|
1010 case sw_value:
|
|
|
1011
|
|
|
1012 if (ngx_http_v3_parse_varlen_int(c, &st->vlint, ch) != NGX_DONE) {
|
|
|
1013 break;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 if (ngx_http_v3_set_param(c, st->id, st->vlint.value) != NGX_OK) {
|
|
|
1017 return NGX_ERROR;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 goto done;
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 return NGX_AGAIN;
|
|
|
1024
|
|
|
1025 done:
|
|
|
1026
|
|
|
1027 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse settings done");
|
|
|
1028
|
|
|
1029 st->state = sw_start;
|
|
|
1030 return NGX_DONE;
|
|
|
1031 }
|
|
|
1032
|
|
|
1033
|
|
|
1034 ngx_int_t
|
|
|
1035 ngx_http_v3_parse_encoder(ngx_connection_t *c, void *data, u_char ch)
|
|
|
1036 {
|
|
|
1037 ngx_http_v3_parse_encoder_t *st = data;
|
|
|
1038
|
|
|
1039 ngx_int_t rc;
|
|
|
1040 enum {
|
|
|
1041 sw_start = 0,
|
|
|
1042 sw_inr,
|
|
|
1043 sw_iwnr,
|
|
|
1044 sw_capacity,
|
|
|
1045 sw_duplicate
|
|
|
1046 };
|
|
|
1047
|
|
|
1048 if (st->state == sw_start) {
|
|
|
1049
|
|
|
1050 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1051 "http3 parse encoder instruction");
|
|
|
1052
|
|
|
1053 if (ch & 0x80) {
|
|
|
1054 /* Insert With Name Reference */
|
|
|
1055
|
|
|
1056 st->state = sw_inr;
|
|
|
1057
|
|
|
1058 } else if (ch & 0x40) {
|
|
|
1059 /* Insert Without Name Reference */
|
|
|
1060
|
|
|
1061 st->state = sw_iwnr;
|
|
|
1062
|
|
|
1063 } else if (ch & 0x20) {
|
|
|
1064 /* Set Dynamic Table Capacity */
|
|
|
1065
|
|
|
1066 st->state = sw_capacity;
|
|
|
1067
|
|
|
1068 } else {
|
|
|
1069 /* Duplicate */
|
|
|
1070
|
|
|
1071 st->state = sw_duplicate;
|
|
|
1072 }
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 switch (st->state) {
|
|
|
1076
|
|
|
1077 case sw_inr:
|
|
|
1078
|
|
|
1079 rc = ngx_http_v3_parse_header_inr(c, &st->header, ch);
|
|
|
1080
|
|
|
1081 if (rc == NGX_ERROR) {
|
|
|
1082 return NGX_ERROR;
|
|
|
1083 }
|
|
|
1084
|
|
|
1085 if (rc != NGX_DONE) {
|
|
|
1086 break;
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 goto done;
|
|
|
1090
|
|
|
1091 case sw_iwnr:
|
|
|
1092
|
|
|
1093 rc = ngx_http_v3_parse_header_iwnr(c, &st->header, ch);
|
|
|
1094
|
|
|
1095 if (rc == NGX_ERROR) {
|
|
|
1096 return NGX_ERROR;
|
|
|
1097 }
|
|
|
1098
|
|
|
1099 if (rc != NGX_DONE) {
|
|
|
1100 break;
|
|
|
1101 }
|
|
|
1102
|
|
|
1103 goto done;
|
|
|
1104
|
|
|
1105 case sw_capacity:
|
|
|
1106
|
|
|
1107 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 5, ch) != NGX_DONE) {
|
|
|
1108 break;
|
|
|
1109 }
|
|
|
1110
|
|
|
1111 if (ngx_http_v3_set_capacity(c, st->pint.value) != NGX_OK) {
|
|
|
1112 return NGX_ERROR;
|
|
|
1113 }
|
|
|
1114
|
|
|
1115 goto done;
|
|
|
1116
|
|
|
1117 case sw_duplicate:
|
|
|
1118
|
|
|
1119 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 5, ch) != NGX_DONE) {
|
|
|
1120 break;
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 if (ngx_http_v3_duplicate(c, st->pint.value) != NGX_OK) {
|
|
|
1124 return NGX_ERROR;
|
|
|
1125 }
|
|
|
1126
|
|
|
1127 goto done;
|
|
|
1128 }
|
|
|
1129
|
|
|
1130 return NGX_AGAIN;
|
|
|
1131
|
|
|
1132 done:
|
|
|
1133
|
|
|
1134 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1135 "http3 parse encoder instruction done");
|
|
|
1136
|
|
|
1137 st->state = sw_start;
|
|
|
1138 return NGX_DONE;
|
|
|
1139 }
|
|
|
1140
|
|
|
1141
|
|
|
1142 ngx_int_t
|
|
|
1143 ngx_http_v3_parse_header_inr(ngx_connection_t *c,
|
|
|
1144 ngx_http_v3_parse_header_t *st, u_char ch)
|
|
|
1145 {
|
|
|
1146 ngx_int_t rc;
|
|
|
1147 enum {
|
|
|
1148 sw_start = 0,
|
|
|
1149 sw_name_index,
|
|
|
1150 sw_value_len,
|
|
|
1151 sw_read_value_len,
|
|
|
1152 sw_value
|
|
|
1153 };
|
|
|
1154
|
|
|
1155 switch (st->state) {
|
|
|
1156
|
|
|
1157 case sw_start:
|
|
|
1158
|
|
|
1159 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header inr");
|
|
|
1160
|
|
|
1161 st->dynamic = (ch & 0x40) ? 0 : 1;
|
|
|
1162 st->state = sw_name_index;
|
|
|
1163
|
|
|
1164 /* fall through */
|
|
|
1165
|
|
|
1166 case sw_name_index:
|
|
|
1167
|
|
|
1168 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 6, ch) != NGX_DONE) {
|
|
|
1169 break;
|
|
|
1170 }
|
|
|
1171
|
|
|
1172 st->index = st->pint.value;
|
|
|
1173 st->state = sw_value_len;
|
|
|
1174 break;
|
|
|
1175
|
|
|
1176 case sw_value_len:
|
|
|
1177
|
|
|
1178 st->literal.huffman = (ch & 0x80) ? 1 : 0;
|
|
|
1179 st->state = sw_read_value_len;
|
|
|
1180
|
|
|
1181 /* fall through */
|
|
|
1182
|
|
|
1183 case sw_read_value_len:
|
|
|
1184
|
|
|
1185 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 7, ch) != NGX_DONE) {
|
|
|
1186 break;
|
|
|
1187 }
|
|
|
1188
|
|
|
1189 st->literal.length = st->pint.value;
|
|
|
1190 if (st->literal.length == 0) {
|
|
|
1191 goto done;
|
|
|
1192 }
|
|
|
1193
|
|
|
1194 st->state = sw_value;
|
|
|
1195 break;
|
|
|
1196
|
|
|
1197 case sw_value:
|
|
|
1198
|
|
|
1199 rc = ngx_http_v3_parse_literal(c, &st->literal, ch);
|
|
|
1200
|
|
|
1201 if (rc == NGX_ERROR) {
|
|
|
1202 return NGX_ERROR;
|
|
|
1203 }
|
|
|
1204
|
|
|
1205 if (rc == NGX_DONE) {
|
|
|
1206 st->value = st->literal.value;
|
|
|
1207 goto done;
|
|
|
1208 }
|
|
|
1209
|
|
|
1210 break;
|
|
|
1211 }
|
|
|
1212
|
|
|
1213 return NGX_AGAIN;
|
|
|
1214
|
|
|
1215 done:
|
|
|
1216
|
|
|
1217 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1218 "http3 parse header inr done %s[%ui] \"%V\"",
|
|
|
1219 st->dynamic ? "dynamic" : "static",
|
|
|
1220 st->index, &st->value);
|
|
|
1221
|
|
|
1222 if (ngx_http_v3_ref_insert(c, st->dynamic, st->index, &st->value) != NGX_OK)
|
|
|
1223 {
|
|
|
1224 return NGX_ERROR;
|
|
|
1225 }
|
|
|
1226
|
|
|
1227 st->state = sw_start;
|
|
|
1228 return NGX_DONE;
|
|
|
1229 }
|
|
|
1230
|
|
|
1231
|
|
|
1232 ngx_int_t
|
|
|
1233 ngx_http_v3_parse_header_iwnr(ngx_connection_t *c,
|
|
|
1234 ngx_http_v3_parse_header_t *st, u_char ch)
|
|
|
1235 {
|
|
|
1236 ngx_int_t rc;
|
|
|
1237 enum {
|
|
|
1238 sw_start = 0,
|
|
|
1239 sw_name_len,
|
|
|
1240 sw_name,
|
|
|
1241 sw_value_len,
|
|
|
1242 sw_read_value_len,
|
|
|
1243 sw_value
|
|
|
1244 };
|
|
|
1245
|
|
|
1246 switch (st->state) {
|
|
|
1247
|
|
|
1248 case sw_start:
|
|
|
1249
|
|
|
1250 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1251 "http3 parse header iwnr");
|
|
|
1252
|
|
|
1253 st->literal.huffman = (ch & 0x20) ? 1 : 0;
|
|
|
1254 st->state = sw_name_len;
|
|
|
1255
|
|
|
1256 /* fall through */
|
|
|
1257
|
|
|
1258 case sw_name_len:
|
|
|
1259
|
|
|
1260 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 5, ch) != NGX_DONE) {
|
|
|
1261 break;
|
|
|
1262 }
|
|
|
1263
|
|
|
1264 st->literal.length = st->pint.value;
|
|
|
1265 if (st->literal.length == 0) {
|
|
|
1266 return NGX_ERROR;
|
|
|
1267 }
|
|
|
1268
|
|
|
1269 st->state = sw_name;
|
|
|
1270 break;
|
|
|
1271
|
|
|
1272 case sw_name:
|
|
|
1273
|
|
|
1274 rc = ngx_http_v3_parse_literal(c, &st->literal, ch);
|
|
|
1275
|
|
|
1276 if (rc == NGX_ERROR) {
|
|
|
1277 return NGX_ERROR;
|
|
|
1278 }
|
|
|
1279
|
|
|
1280 if (rc == NGX_DONE) {
|
|
|
1281 st->name = st->literal.value;
|
|
|
1282 st->state = sw_value_len;
|
|
|
1283 }
|
|
|
1284
|
|
|
1285 break;
|
|
|
1286
|
|
|
1287 case sw_value_len:
|
|
|
1288
|
|
|
1289 st->literal.huffman = (ch & 0x80) ? 1 : 0;
|
|
|
1290 st->state = sw_read_value_len;
|
|
|
1291
|
|
|
1292 /* fall through */
|
|
|
1293
|
|
|
1294 case sw_read_value_len:
|
|
|
1295
|
|
|
1296 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 7, ch) != NGX_DONE) {
|
|
|
1297 break;
|
|
|
1298 }
|
|
|
1299
|
|
|
1300 st->literal.length = st->pint.value;
|
|
|
1301 if (st->literal.length == 0) {
|
|
|
1302 goto done;
|
|
|
1303 }
|
|
|
1304
|
|
|
1305 st->state = sw_value;
|
|
|
1306 break;
|
|
|
1307
|
|
|
1308 case sw_value:
|
|
|
1309
|
|
|
1310 rc = ngx_http_v3_parse_literal(c, &st->literal, ch);
|
|
|
1311
|
|
|
1312 if (rc == NGX_ERROR) {
|
|
|
1313 return NGX_ERROR;
|
|
|
1314 }
|
|
|
1315
|
|
|
1316 if (rc == NGX_DONE) {
|
|
|
1317 st->value = st->literal.value;
|
|
|
1318 goto done;
|
|
|
1319 }
|
|
|
1320
|
|
|
1321 break;
|
|
|
1322 }
|
|
|
1323
|
|
|
1324 return NGX_AGAIN;
|
|
|
1325
|
|
|
1326 done:
|
|
|
1327
|
|
|
1328 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1329 "http3 parse header iwnr done \"%V\":\"%V\"",
|
|
|
1330 &st->name, &st->value);
|
|
|
1331
|
|
|
1332 if (ngx_http_v3_insert(c, &st->name, &st->value) != NGX_OK) {
|
|
|
1333 return NGX_ERROR;
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 st->state = sw_start;
|
|
|
1337 return NGX_DONE;
|
|
|
1338 }
|
|
|
1339
|
|
|
1340
|
|
|
1341 ngx_int_t
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1342 ngx_http_v3_parse_decoder(ngx_connection_t *c, void *data, u_char ch)
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1343 {
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1344 ngx_http_v3_parse_decoder_t *st = data;
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1345
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1346 enum {
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1347 sw_start = 0,
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1348 sw_ack_header,
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1349 sw_cancel_stream,
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1350 sw_inc_insert_count
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1351 };
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1352
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1353 if (st->state == sw_start) {
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1354
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1355 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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1356 "http3 parse decoder instruction");
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1357
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1358 if (ch & 0x80) {
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1359 /* Header Acknowledgement */
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1360
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1361 st->state = sw_ack_header;
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1362
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1363 } else if (ch & 0x40) {
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1364 /* Stream Cancellation */
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1365
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1366 st->state = sw_cancel_stream;
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1367
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1368 } else {
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1369 /* Insert Count Increment */
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1370
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1371 st->state = sw_inc_insert_count;
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1372 }
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1373 }
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1374
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1375 switch (st->state) {
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1376
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1377 case sw_ack_header:
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1378
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1379 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 6, ch) != NGX_DONE) {
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1380 break;
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1381 }
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1382
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1383 if (ngx_http_v3_ack_header(c, st->pint.value) != NGX_OK) {
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1384 return NGX_ERROR;
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1385 }
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1386
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1387 goto done;
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1388
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1389 case sw_cancel_stream:
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1390
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1391 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 6, ch) != NGX_DONE) {
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1392 break;
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1393 }
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1394
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1395 if (ngx_http_v3_cancel_stream(c, st->pint.value) != NGX_OK) {
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1396 return NGX_ERROR;
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1397 }
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1398
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1399 goto done;
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1400
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1401 case sw_inc_insert_count:
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1402
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1403 if (ngx_http_v3_parse_prefix_int(c, &st->pint, 6, ch) != NGX_DONE) {
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1404 break;
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1405 }
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1406
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1407 if (ngx_http_v3_inc_insert_count(c, st->pint.value) != NGX_OK) {
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1408 return NGX_ERROR;
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1409 }
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1410
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1411 goto done;
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1412 }
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1413
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1414 return NGX_AGAIN;
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1415
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1416 done:
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1417
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1418 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
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1419 "http3 parse decoder instruction done");
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1420
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1421 st->state = sw_start;
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1422 return NGX_DONE;
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1423 }
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