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50
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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12 /*
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13 * the single part format:
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14 *
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15 * "HTTP/1.0 206 Partial Content" CRLF
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16 * ... header ...
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17 * "Content-Type: image/jpeg" CRLF
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18 * "Content-Length: SIZE" CRLF
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19 * "Content-Range: bytes START-END/SIZE" CRLF
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20 * CRLF
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21 * ... data ...
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22 *
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23 *
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24 * the mutlipart format:
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25 *
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26 * "HTTP/1.0 206 Partial Content" CRLF
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27 * ... header ...
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28 * "Content-Type: multipart/byteranges; boundary=0123456789" CRLF
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29 * CRLF
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30 * CRLF
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31 * "--0123456789" CRLF
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32 * "Content-Type: image/jpeg" CRLF
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33 * "Content-Range: bytes START0-END0/SIZE" CRLF
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34 * CRLF
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35 * ... data ...
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36 * CRLF
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37 * "--0123456789" CRLF
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38 * "Content-Type: image/jpeg" CRLF
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39 * "Content-Range: bytes START1-END1/SIZE" CRLF
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40 * CRLF
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41 * ... data ...
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42 * CRLF
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43 * "--0123456789--" CRLF
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44 */
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45
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46
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47 typedef struct {
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272
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48 off_t start;
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49 off_t end;
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50 ngx_str_t content_range;
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51 } ngx_http_range_t;
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52
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53
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54 typedef struct {
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55 off_t offset;
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56 ngx_str_t boundary_header;
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57 ngx_array_t ranges;
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50
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58 } ngx_http_range_filter_ctx_t;
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59
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60
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230
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61 static ngx_int_t ngx_http_range_header_filter_init(ngx_conf_t *cf);
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62 static ngx_int_t ngx_http_range_body_filter_init(ngx_conf_t *cf);
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50
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63
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64
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65 static ngx_http_module_t ngx_http_range_header_filter_module_ctx = {
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58
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66 NULL, /* preconfiguration */
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230
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67 ngx_http_range_header_filter_init, /* postconfiguration */
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50
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68
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69 NULL, /* create main configuration */
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70 NULL, /* init main configuration */
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71
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72 NULL, /* create server configuration */
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73 NULL, /* merge server configuration */
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74
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75 NULL, /* create location configuration */
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76 NULL, /* merge location configuration */
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77 };
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78
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79
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80 ngx_module_t ngx_http_range_header_filter_module = {
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58
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81 NGX_MODULE_V1,
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50
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82 &ngx_http_range_header_filter_module_ctx, /* module context */
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83 NULL, /* module directives */
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84 NGX_HTTP_MODULE, /* module type */
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90
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85 NULL, /* init master */
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230
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86 NULL, /* init module */
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90
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87 NULL, /* init process */
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88 NULL, /* init thread */
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89 NULL, /* exit thread */
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90 NULL, /* exit process */
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91 NULL, /* exit master */
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92 NGX_MODULE_V1_PADDING
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50
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93 };
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94
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95
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96 static ngx_http_module_t ngx_http_range_body_filter_module_ctx = {
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58
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97 NULL, /* preconfiguration */
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230
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98 ngx_http_range_body_filter_init, /* postconfiguration */
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50
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99
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100 NULL, /* create main configuration */
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101 NULL, /* init main configuration */
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102
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103 NULL, /* create server configuration */
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104 NULL, /* merge server configuration */
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105
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106 NULL, /* create location configuration */
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107 NULL, /* merge location configuration */
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108 };
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109
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110
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111 ngx_module_t ngx_http_range_body_filter_module = {
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58
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112 NGX_MODULE_V1,
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50
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113 &ngx_http_range_body_filter_module_ctx, /* module context */
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114 NULL, /* module directives */
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115 NGX_HTTP_MODULE, /* module type */
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90
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116 NULL, /* init master */
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230
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117 NULL, /* init module */
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90
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118 NULL, /* init process */
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119 NULL, /* init thread */
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120 NULL, /* exit thread */
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121 NULL, /* exit process */
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122 NULL, /* exit master */
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123 NGX_MODULE_V1_PADDING
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50
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124 };
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125
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126
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127 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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128 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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129
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130
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131 static ngx_int_t
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132 ngx_http_range_header_filter(ngx_http_request_t *r)
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133 {
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134 u_char *p;
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135 size_t len;
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136 off_t start, end;
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137 ngx_int_t rc;
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138 ngx_uint_t suffix, i;
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139 ngx_atomic_uint_t boundary;
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140 ngx_table_elt_t *content_range;
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141 ngx_http_range_t *range;
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142 ngx_http_range_filter_ctx_t *ctx;
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143
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144 if (r->http_version < NGX_HTTP_VERSION_10
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145 || r->headers_out.status != NGX_HTTP_OK
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146
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146 || r != r->main
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50
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147 || r->headers_out.content_length_n == -1
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130
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148 || !r->allow_ranges)
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50
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149 {
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150 return ngx_http_next_header_filter(r);
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151 }
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152
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153 if (r->headers_in.range == NULL
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154 || r->headers_in.range->value.len < 7
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155 || ngx_strncasecmp(r->headers_in.range->value.data, "bytes=", 6) != 0)
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156 {
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157 r->headers_out.accept_ranges = ngx_list_push(&r->headers_out.headers);
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158 if (r->headers_out.accept_ranges == NULL) {
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159 return NGX_ERROR;
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160 }
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161
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58
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162 r->headers_out.accept_ranges->hash = 1;
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50
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163 r->headers_out.accept_ranges->key.len = sizeof("Accept-Ranges") - 1;
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164 r->headers_out.accept_ranges->key.data = (u_char *) "Accept-Ranges";
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165 r->headers_out.accept_ranges->value.len = sizeof("bytes") - 1;
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166 r->headers_out.accept_ranges->value.data = (u_char *) "bytes";
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167
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168 return ngx_http_next_header_filter(r);
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169 }
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170
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272
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171 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t));
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172 if (ctx == NULL) {
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173 return NGX_ERROR;
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174 }
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175
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176 if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t))
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177 == NGX_ERROR)
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50
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178 {
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179 return NGX_ERROR;
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180 }
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181
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182 rc = 0;
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183 range = NULL;
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184 p = r->headers_in.range->value.data + 6;
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185
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186 for ( ;; ) {
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187 start = 0;
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188 end = 0;
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189 suffix = 0;
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190
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191 while (*p == ' ') { p++; }
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192
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193 if (*p != '-') {
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194 if (*p < '0' || *p > '9') {
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195 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
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196 break;
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197 }
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198
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199 while (*p >= '0' && *p <= '9') {
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200 start = start * 10 + *p++ - '0';
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201 }
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202
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203 while (*p == ' ') { p++; }
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204
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205 if (*p++ != '-') {
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206 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
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207 break;
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208 }
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209
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210 if (start >= r->headers_out.content_length_n) {
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211 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
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212 break;
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213 }
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214
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215 while (*p == ' ') { p++; }
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216
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217 if (*p == ',' || *p == '\0') {
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272
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218 range = ngx_array_push(&ctx->ranges);
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50
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219 if (range == NULL) {
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220 return NGX_ERROR;
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221 }
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222
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223 range->start = start;
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224 range->end = r->headers_out.content_length_n;
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225
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226 if (*p++ != ',') {
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227 break;
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228 }
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229
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230 continue;
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231 }
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232
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233 } else {
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234 suffix = 1;
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235 p++;
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236 }
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237
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238 if (*p < '0' || *p > '9') {
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239 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
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240 break;
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241 }
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242
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243 while (*p >= '0' && *p <= '9') {
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244 end = end * 10 + *p++ - '0';
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245 }
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246
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247 while (*p == ' ') { p++; }
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248
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249 if (*p != ',' && *p != '\0') {
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250 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
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251 break;
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252 }
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253
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254 if (suffix) {
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255 start = r->headers_out.content_length_n - end;
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256 end = r->headers_out.content_length_n - 1;
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257 }
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258
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259 if (start > end) {
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260 rc = NGX_HTTP_RANGE_NOT_SATISFIABLE;
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261 break;
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262 }
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263
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272
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264 range = ngx_array_push(&ctx->ranges);
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50
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265 if (range == NULL) {
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266 return NGX_ERROR;
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267 }
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268
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269 range->start = start;
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270
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271 if (end >= r->headers_out.content_length_n) {
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272 /*
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273 * Download Accelerator sends the last byte position
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274 * that equals to the file length
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275 */
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276 range->end = r->headers_out.content_length_n;
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277
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278 } else {
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279 range->end = end + 1;
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280 }
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281
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282 if (*p++ != ',') {
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283 break;
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284 }
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285 }
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286
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287 if (rc) {
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288
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289 /* rc == NGX_HTTP_RANGE_NOT_SATISFIABLE */
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290
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291 r->headers_out.status = rc;
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292
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293 content_range = ngx_list_push(&r->headers_out.headers);
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294 if (content_range == NULL) {
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295 return NGX_ERROR;
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296 }
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297
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298 r->headers_out.content_range = content_range;
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299
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58
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300 content_range->hash = 1;
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50
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301 content_range->key.len = sizeof("Content-Range") - 1;
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302 content_range->key.data = (u_char *) "Content-Range";
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303
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304 content_range->value.data = ngx_palloc(r->pool,
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305 sizeof("bytes */") - 1 + NGX_OFF_T_LEN);
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306 if (content_range->value.data == NULL) {
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307 return NGX_ERROR;
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308 }
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309
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310 content_range->value.len = ngx_sprintf(content_range->value.data,
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311 "bytes */%O",
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312 r->headers_out.content_length_n)
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313 - content_range->value.data;
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314
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126
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315 ngx_http_clear_content_length(r);
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316
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317 return rc;
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318 }
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319
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272
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320 ngx_http_set_ctx(r, ctx, ngx_http_range_body_filter_module);
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321
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322 r->headers_out.status = NGX_HTTP_PARTIAL_CONTENT;
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323
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272
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324 if (ctx->ranges.nelts == 1) {
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50
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325
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326 content_range = ngx_list_push(&r->headers_out.headers);
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327 if (content_range == NULL) {
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328 return NGX_ERROR;
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329 }
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330
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331 r->headers_out.content_range = content_range;
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332
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58
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333 content_range->hash = 1;
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334 content_range->key.len = sizeof("Content-Range") - 1;
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335 content_range->key.data = (u_char *) "Content-Range";
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336
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337 content_range->value.data =
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338 ngx_palloc(r->pool, sizeof("bytes -/") - 1 + 3 * NGX_OFF_T_LEN);
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339 if (content_range->value.data == NULL) {
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340 return NGX_ERROR;
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341 }
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342
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343 /* "Content-Range: bytes SSSS-EEEE/TTTT" header */
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344
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345 content_range->value.len = ngx_sprintf(content_range->value.data,
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346 "bytes %O-%O/%O",
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347 range->start, range->end - 1,
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348 r->headers_out.content_length_n)
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349 - content_range->value.data;
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350
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351 r->headers_out.content_length_n = range->end - range->start;
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352
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272
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353 if (r->headers_out.content_length) {
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354 r->headers_out.content_length->hash = 0;
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355 r->headers_out.content_length = NULL;
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356 }
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357
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50
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358 return ngx_http_next_header_filter(r);
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359 }
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360
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361
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362 /* TODO: what if no content_type ?? */
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363
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364 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN
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365 + sizeof(CRLF "Content-Type: ") - 1
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58
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366 + r->headers_out.content_type.len
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50
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367 + sizeof(CRLF "Content-Range: bytes ") - 1;
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368
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369 if (r->headers_out.charset.len) {
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370 len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
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371 }
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372
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373 ctx->boundary_header.data = ngx_palloc(r->pool, len);
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374 if (ctx->boundary_header.data == NULL) {
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375 return NGX_ERROR;
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376 }
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377
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378 boundary = ngx_next_temp_number(0);
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379
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380 /*
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381 * The boundary header of the range:
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382 * CRLF
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383 * "--0123456789" CRLF
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384 * "Content-Type: image/jpeg" CRLF
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385 * "Content-Range: bytes "
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386 */
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387
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388 if (r->headers_out.charset.len) {
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389 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data,
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390 CRLF "--%0muA" CRLF
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391 "Content-Type: %V; charset=%V" CRLF
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392 "Content-Range: bytes ",
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393 boundary,
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58
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394 &r->headers_out.content_type,
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50
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395 &r->headers_out.charset)
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396 - ctx->boundary_header.data;
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397
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398 r->headers_out.charset.len = 0;
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399
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400 } else {
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401 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data,
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402 CRLF "--%0muA" CRLF
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403 "Content-Type: %V" CRLF
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404 "Content-Range: bytes ",
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405 boundary,
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58
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406 &r->headers_out.content_type)
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50
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407 - ctx->boundary_header.data;
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408 }
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409
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58
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410 r->headers_out.content_type.data =
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411 ngx_palloc(r->pool,
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412 sizeof("Content-Type: multipart/byteranges; boundary=") - 1
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413 + NGX_ATOMIC_T_LEN);
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50
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414
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58
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415 if (r->headers_out.content_type.data == NULL) {
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50
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416 return NGX_ERROR;
|
|
|
417 }
|
|
|
418
|
|
|
419 /* "Content-Type: multipart/byteranges; boundary=0123456789" */
|
|
|
420
|
|
58
|
421 r->headers_out.content_type.len =
|
|
|
422 ngx_sprintf(r->headers_out.content_type.data,
|
|
50
|
423 "multipart/byteranges; boundary=%0muA",
|
|
|
424 boundary)
|
|
58
|
425 - r->headers_out.content_type.data;
|
|
50
|
426
|
|
|
427
|
|
|
428 /* the size of the last boundary CRLF "--0123456789--" CRLF */
|
|
|
429
|
|
|
430 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN + sizeof("--" CRLF) - 1;
|
|
|
431
|
|
272
|
432 range = ctx->ranges.elts;
|
|
|
433 for (i = 0; i < ctx->ranges.nelts; i++) {
|
|
50
|
434
|
|
|
435 /* the size of the range: "SSSS-EEEE/TTTT" CRLF CRLF */
|
|
|
436
|
|
|
437 range[i].content_range.data =
|
|
|
438 ngx_palloc(r->pool, 3 * NGX_OFF_T_LEN + 2 + 4);
|
|
|
439
|
|
|
440 if (range[i].content_range.data == NULL) {
|
|
|
441 return NGX_ERROR;
|
|
|
442 }
|
|
|
443
|
|
|
444 range[i].content_range.len = ngx_sprintf(range[i].content_range.data,
|
|
|
445 "%O-%O/%O" CRLF CRLF,
|
|
|
446 range[i].start, range[i].end - 1,
|
|
|
447 r->headers_out.content_length_n)
|
|
|
448 - range[i].content_range.data;
|
|
|
449
|
|
|
450 len += ctx->boundary_header.len + range[i].content_range.len
|
|
|
451 + (size_t) (range[i].end - range[i].start);
|
|
|
452 }
|
|
|
453
|
|
|
454 r->headers_out.content_length_n = len;
|
|
272
|
455
|
|
|
456 if (r->headers_out.content_length) {
|
|
|
457 r->headers_out.content_length->hash = 0;
|
|
|
458 r->headers_out.content_length = NULL;
|
|
|
459 }
|
|
50
|
460
|
|
|
461 return ngx_http_next_header_filter(r);
|
|
|
462 }
|
|
|
463
|
|
|
464
|
|
|
465 static ngx_int_t
|
|
|
466 ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
|
|
|
467 {
|
|
272
|
468 off_t start, last;
|
|
|
469 ngx_buf_t *b, *buf;
|
|
50
|
470 ngx_uint_t i;
|
|
|
471 ngx_chain_t *out, *hcl, *rcl, *dcl, **ll;
|
|
|
472 ngx_http_range_t *range;
|
|
|
473 ngx_http_range_filter_ctx_t *ctx;
|
|
|
474
|
|
272
|
475 if (in == NULL) {
|
|
|
476 return ngx_http_next_body_filter(r, in);
|
|
|
477 }
|
|
|
478
|
|
|
479 ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module);
|
|
|
480
|
|
|
481 if (ctx == NULL) {
|
|
|
482 return ngx_http_next_body_filter(r, in);
|
|
|
483 }
|
|
|
484
|
|
|
485 buf = in->buf;
|
|
|
486
|
|
|
487 if (ngx_buf_special(in->buf)) {
|
|
50
|
488 return ngx_http_next_body_filter(r, in);
|
|
|
489 }
|
|
|
490
|
|
272
|
491 if (ctx->offset) {
|
|
|
492 goto overlapped;
|
|
|
493 }
|
|
|
494
|
|
|
495 range = ctx->ranges.elts;
|
|
|
496
|
|
|
497 if (!buf->last_buf) {
|
|
|
498
|
|
|
499 if (buf->in_file) {
|
|
|
500 start = buf->file_pos + ctx->offset;
|
|
|
501 last = buf->file_last + ctx->offset;
|
|
|
502
|
|
|
503 } else {
|
|
|
504 start = buf->pos - buf->start + ctx->offset;
|
|
|
505 last = buf->last - buf->start + ctx->offset;
|
|
|
506 }
|
|
|
507
|
|
|
508 for (i = 0; i < ctx->ranges.nelts; i++) {
|
|
|
509 if (start > range[i].start || last < range[i].end) {
|
|
|
510 goto overlapped;
|
|
|
511 }
|
|
|
512 }
|
|
|
513 }
|
|
|
514
|
|
50
|
515 /*
|
|
272
|
516 * the optimized version for the responses
|
|
|
517 * that are passed in the single buffer
|
|
50
|
518 */
|
|
|
519
|
|
272
|
520 ctx->offset = ngx_buf_size(buf);
|
|
|
521
|
|
|
522 if (ctx->ranges.nelts == 1) {
|
|
50
|
523
|
|
272
|
524 if (buf->in_file) {
|
|
|
525 buf->file_pos = range->start;
|
|
|
526 buf->file_last = range->end;
|
|
|
527 }
|
|
50
|
528
|
|
272
|
529 if (ngx_buf_in_memory(buf)) {
|
|
|
530 buf->pos = buf->start + (size_t) range->start;
|
|
|
531 buf->last = buf->start + (size_t) range->end;
|
|
50
|
532 }
|
|
|
533
|
|
272
|
534 return ngx_http_next_body_filter(r, in);
|
|
|
535 }
|
|
50
|
536
|
|
272
|
537 ll = &out;
|
|
|
538
|
|
|
539 for (i = 0; i < ctx->ranges.nelts; i++) {
|
|
50
|
540
|
|
272
|
541 /*
|
|
|
542 * The boundary header of the range:
|
|
|
543 * CRLF
|
|
|
544 * "--0123456789" CRLF
|
|
|
545 * "Content-Type: image/jpeg" CRLF
|
|
|
546 * "Content-Range: bytes "
|
|
|
547 */
|
|
50
|
548
|
|
272
|
549 b = ngx_calloc_buf(r->pool);
|
|
|
550 if (b == NULL) {
|
|
|
551 return NGX_ERROR;
|
|
|
552 }
|
|
50
|
553
|
|
272
|
554 b->memory = 1;
|
|
|
555 b->pos = ctx->boundary_header.data;
|
|
|
556 b->last = ctx->boundary_header.data + ctx->boundary_header.len;
|
|
50
|
557
|
|
272
|
558 hcl = ngx_alloc_chain_link(r->pool);
|
|
|
559 if (hcl == NULL) {
|
|
|
560 return NGX_ERROR;
|
|
|
561 }
|
|
50
|
562
|
|
272
|
563 hcl->buf = b;
|
|
50
|
564
|
|
|
565
|
|
272
|
566 /* "SSSS-EEEE/TTTT" CRLF CRLF */
|
|
50
|
567
|
|
|
568 b = ngx_calloc_buf(r->pool);
|
|
|
569 if (b == NULL) {
|
|
|
570 return NGX_ERROR;
|
|
|
571 }
|
|
|
572
|
|
|
573 b->temporary = 1;
|
|
272
|
574 b->pos = range[i].content_range.data;
|
|
|
575 b->last = range[i].content_range.data + range[i].content_range.len;
|
|
|
576
|
|
|
577 rcl = ngx_alloc_chain_link(r->pool);
|
|
|
578 if (rcl == NULL) {
|
|
|
579 return NGX_ERROR;
|
|
|
580 }
|
|
|
581
|
|
|
582 rcl->buf = b;
|
|
|
583
|
|
|
584
|
|
|
585 /* the range data */
|
|
|
586
|
|
|
587 b = ngx_calloc_buf(r->pool);
|
|
|
588 if (b == NULL) {
|
|
|
589 return NGX_ERROR;
|
|
|
590 }
|
|
50
|
591
|
|
272
|
592 b->in_file = buf->in_file;
|
|
|
593 b->temporary = buf->temporary;
|
|
|
594 b->memory = buf->memory;
|
|
|
595 b->mmap = buf->mmap;
|
|
|
596 b->file = buf->file;
|
|
|
597
|
|
|
598 if (buf->in_file) {
|
|
282
|
599 b->file_pos = range[i].start;
|
|
|
600 b->file_last = range[i].end;
|
|
272
|
601 }
|
|
|
602
|
|
|
603 if (ngx_buf_in_memory(buf)) {
|
|
282
|
604 b->pos = buf->start + (size_t) range[i].start;
|
|
|
605 b->last = buf->start + (size_t) range[i].end;
|
|
272
|
606 }
|
|
|
607
|
|
|
608 dcl = ngx_alloc_chain_link(r->pool);
|
|
|
609 if (dcl == NULL) {
|
|
50
|
610 return NGX_ERROR;
|
|
|
611 }
|
|
|
612
|
|
272
|
613 dcl->buf = b;
|
|
50
|
614
|
|
|
615 *ll = hcl;
|
|
272
|
616 hcl->next = rcl;
|
|
|
617 rcl->next = dcl;
|
|
|
618 ll = &dcl->next;
|
|
|
619 }
|
|
50
|
620
|
|
272
|
621 /* the last boundary CRLF "--0123456789--" CRLF */
|
|
|
622
|
|
|
623 b = ngx_calloc_buf(r->pool);
|
|
|
624 if (b == NULL) {
|
|
|
625 return NGX_ERROR;
|
|
|
626 }
|
|
|
627
|
|
|
628 b->temporary = 1;
|
|
|
629 b->last_buf = 1;
|
|
|
630
|
|
|
631 b->pos = ngx_palloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN
|
|
|
632 + sizeof("--" CRLF) - 1);
|
|
|
633 if (b->pos == NULL) {
|
|
|
634 return NGX_ERROR;
|
|
50
|
635 }
|
|
|
636
|
|
272
|
637 b->last = ngx_cpymem(b->pos, ctx->boundary_header.data, 4 + 10);
|
|
|
638 *b->last++ = '-'; *b->last++ = '-';
|
|
|
639 *b->last++ = CR; *b->last++ = LF;
|
|
|
640
|
|
|
641 hcl = ngx_alloc_chain_link(r->pool);
|
|
|
642 if (hcl == NULL) {
|
|
|
643 return NGX_ERROR;
|
|
|
644 }
|
|
50
|
645
|
|
272
|
646 hcl->buf = b;
|
|
|
647 hcl->next = NULL;
|
|
|
648
|
|
|
649 *ll = hcl;
|
|
|
650
|
|
|
651 return ngx_http_next_body_filter(r, out);
|
|
|
652
|
|
|
653 overlapped:
|
|
|
654
|
|
|
655 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
656 "range in overlapped buffers");
|
|
|
657
|
|
|
658 return NGX_ERROR;
|
|
50
|
659 }
|
|
|
660
|
|
|
661
|
|
|
662 static ngx_int_t
|
|
230
|
663 ngx_http_range_header_filter_init(ngx_conf_t *cf)
|
|
50
|
664 {
|
|
|
665 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
666 ngx_http_top_header_filter = ngx_http_range_header_filter;
|
|
|
667
|
|
|
668 return NGX_OK;
|
|
|
669 }
|
|
|
670
|
|
|
671
|
|
|
672 static ngx_int_t
|
|
230
|
673 ngx_http_range_body_filter_init(ngx_conf_t *cf)
|
|
50
|
674 {
|
|
|
675 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
676 ngx_http_top_body_filter = ngx_http_range_body_filter;
|
|
|
677
|
|
|
678 return NGX_OK;
|
|
|
679 }
|
