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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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206
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12 #define NGX_HTTP_NO_CHARSET -2
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244
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13 #define NGX_HTTP_CHARSET_VAR 0x10000
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206
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14
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15 /* 1 byte length and up to 3 bytes for the UTF-8 encoding of the UCS-2 */
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16 #define NGX_UTF_LEN 4
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17
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18 #define NGX_HTML_ENTITY_LEN (sizeof("") - 1)
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78
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19
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20
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50
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21 typedef struct {
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206
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22 u_char **tables;
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23 ngx_str_t name;
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72
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24
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206
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25 unsigned length:16;
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26 unsigned utf8:1;
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50
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27 } ngx_http_charset_t;
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28
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29
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30 typedef struct {
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206
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31 ngx_int_t src;
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32 ngx_int_t dst;
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78
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33 } ngx_http_charset_recode_t;
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34
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35
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36 typedef struct {
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206
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37 ngx_int_t src;
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38 ngx_int_t dst;
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39 u_char *src2dst;
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40 u_char *dst2src;
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50
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41 } ngx_http_charset_tables_t;
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42
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43
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44 typedef struct {
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206
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45 ngx_array_t charsets; /* ngx_http_charset_t */
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46 ngx_array_t tables; /* ngx_http_charset_tables_t */
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47 ngx_array_t recodes; /* ngx_http_charset_recode_t */
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50
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48 } ngx_http_charset_main_conf_t;
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49
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50
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51 typedef struct {
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206
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52 ngx_int_t charset;
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53 ngx_int_t source_charset;
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54 ngx_flag_t override_charset;
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394
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55
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56 ngx_hash_t types;
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57 ngx_array_t *types_keys;
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50
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58 } ngx_http_charset_loc_conf_t;
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59
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60
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61 typedef struct {
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206
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62 u_char *table;
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63 ngx_int_t charset;
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64
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65 ngx_chain_t *busy;
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66 ngx_chain_t *free_bufs;
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67 ngx_chain_t *free_buffers;
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68
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69 size_t saved_len;
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70 u_char saved[NGX_UTF_LEN];
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71
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72 unsigned length:16;
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73 unsigned from_utf8:1;
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74 unsigned to_utf8:1;
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50
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75 } ngx_http_charset_ctx_t;
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76
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77
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206
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78 typedef struct {
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79 ngx_http_charset_tables_t *table;
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80 ngx_http_charset_t *charset;
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81 ngx_uint_t characters;
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82 } ngx_http_charset_conf_ctx_t;
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83
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50
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84
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206
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85 static ngx_int_t ngx_http_charset_get_charset(ngx_http_charset_t *charsets,
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244
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86 ngx_uint_t n, ngx_str_t *charset);
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206
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87 static ngx_int_t ngx_http_charset_set_charset(ngx_http_request_t *r,
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88 ngx_http_charset_t *charsets, ngx_int_t charset, ngx_int_t source_charset);
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89 static ngx_uint_t ngx_http_charset_recode(ngx_buf_t *b, u_char *table);
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90 static ngx_chain_t *ngx_http_charset_recode_from_utf8(ngx_pool_t *pool,
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91 ngx_buf_t *buf, ngx_http_charset_ctx_t *ctx);
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92 static ngx_chain_t *ngx_http_charset_recode_to_utf8(ngx_pool_t *pool,
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93 ngx_buf_t *buf, ngx_http_charset_ctx_t *ctx);
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94
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95 static ngx_chain_t *ngx_http_charset_get_buf(ngx_pool_t *pool,
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96 ngx_http_charset_ctx_t *ctx);
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97 static ngx_chain_t *ngx_http_charset_get_buffer(ngx_pool_t *pool,
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98 ngx_http_charset_ctx_t *ctx, size_t size);
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99
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100 static char *ngx_http_charset_map_block(ngx_conf_t *cf, ngx_command_t *cmd,
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50
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101 void *conf);
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206
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102 static char *ngx_http_charset_map(ngx_conf_t *cf, ngx_command_t *dummy,
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103 void *conf);
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50
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104
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105 static char *ngx_http_set_charset_slot(ngx_conf_t *cf, ngx_command_t *cmd,
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106 void *conf);
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107 static ngx_int_t ngx_http_add_charset(ngx_array_t *charsets, ngx_str_t *name);
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108
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109 static void *ngx_http_charset_create_main_conf(ngx_conf_t *cf);
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110 static void *ngx_http_charset_create_loc_conf(ngx_conf_t *cf);
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111 static char *ngx_http_charset_merge_loc_conf(ngx_conf_t *cf,
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112 void *parent, void *child);
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78
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113 static ngx_int_t ngx_http_charset_postconfiguration(ngx_conf_t *cf);
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114
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115
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394
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116 ngx_str_t ngx_http_charset_default_types[] = {
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117 ngx_string("text/html"),
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118 ngx_string("text/xml"),
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119 ngx_string("text/plain"),
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120 ngx_string("text/vnd.wap.wml"),
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121 ngx_string("application/x-javascript"),
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122 ngx_string("application/rss+xml"),
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123 ngx_null_string
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124 };
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125
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126
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50
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127 static ngx_command_t ngx_http_charset_filter_commands[] = {
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128
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78
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129 { ngx_string("charset"),
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108
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130 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF
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131 |NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
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78
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132 ngx_http_set_charset_slot,
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133 NGX_HTTP_LOC_CONF_OFFSET,
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134 offsetof(ngx_http_charset_loc_conf_t, charset),
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135 NULL },
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136
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137 { ngx_string("source_charset"),
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108
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138 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF
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139 |NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
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78
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140 ngx_http_set_charset_slot,
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141 NGX_HTTP_LOC_CONF_OFFSET,
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142 offsetof(ngx_http_charset_loc_conf_t, source_charset),
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143 NULL },
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144
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184
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145 { ngx_string("override_charset"),
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146 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF
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147 |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG,
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148 ngx_conf_set_flag_slot,
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149 NGX_HTTP_LOC_CONF_OFFSET,
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150 offsetof(ngx_http_charset_loc_conf_t, override_charset),
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151 NULL },
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152
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394
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153 { ngx_string("charset_types"),
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154 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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155 ngx_http_types_slot,
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156 NGX_HTTP_LOC_CONF_OFFSET,
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157 offsetof(ngx_http_charset_loc_conf_t, types_keys),
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158 &ngx_http_charset_default_types[0] },
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159
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50
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160 { ngx_string("charset_map"),
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161 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE2,
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206
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162 ngx_http_charset_map_block,
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50
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163 NGX_HTTP_MAIN_CONF_OFFSET,
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164 0,
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165 NULL },
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166
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167 ngx_null_command
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168 };
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169
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170
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171 static ngx_http_module_t ngx_http_charset_filter_module_ctx = {
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58
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172 NULL, /* preconfiguration */
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78
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173 ngx_http_charset_postconfiguration, /* postconfiguration */
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50
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174
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175 ngx_http_charset_create_main_conf, /* create main configuration */
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78
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176 NULL, /* init main configuration */
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50
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177
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178 NULL, /* create server configuration */
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179 NULL, /* merge server configuration */
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180
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181 ngx_http_charset_create_loc_conf, /* create location configuration */
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182 ngx_http_charset_merge_loc_conf /* merge location configuration */
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183 };
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184
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185
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186 ngx_module_t ngx_http_charset_filter_module = {
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58
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187 NGX_MODULE_V1,
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50
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188 &ngx_http_charset_filter_module_ctx, /* module context */
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189 ngx_http_charset_filter_commands, /* module directives */
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190 NGX_HTTP_MODULE, /* module type */
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90
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191 NULL, /* init master */
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230
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192 NULL, /* init module */
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90
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193 NULL, /* init process */
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194 NULL, /* init thread */
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195 NULL, /* exit thread */
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196 NULL, /* exit process */
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197 NULL, /* exit master */
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198 NGX_MODULE_V1_PADDING
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50
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199 };
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200
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201
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202 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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203 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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204
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205
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206 static ngx_int_t
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207 ngx_http_charset_header_filter(ngx_http_request_t *r)
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208 {
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184
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209 ngx_int_t charset, source_charset;
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320
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210 ngx_str_t *mc, *from, *to, s;
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206
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211 ngx_uint_t n;
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212 ngx_http_charset_t *charsets;
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213 ngx_http_charset_ctx_t *ctx;
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244
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214 ngx_http_variable_value_t *vv;
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202
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215 ngx_http_charset_loc_conf_t *lcf, *mlcf;
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50
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216 ngx_http_charset_main_conf_t *mcf;
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217
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218 mcf = ngx_http_get_module_main_conf(r, ngx_http_charset_filter_module);
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184
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219
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206
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220 charsets = mcf->charsets.elts;
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221 n = mcf->charsets.nelts;
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184
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222
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206
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223 /* destination charset */
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202
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224
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225 if (r == r->main) {
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206
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226
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382
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227 if (r->headers_out.content_encoding
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228 && r->headers_out.content_encoding->value.len)
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229 {
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230 return ngx_http_next_header_filter(r);
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231 }
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232
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202
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233 if (r->headers_out.content_type.len == 0) {
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234 return ngx_http_next_header_filter(r);
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235 }
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50
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236
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206
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237 if (r->headers_out.override_charset
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238 && r->headers_out.override_charset->len)
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202
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239 {
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206
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240 charset = ngx_http_charset_get_charset(charsets, n,
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244
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241 r->headers_out.override_charset);
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206
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242
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243 if (charset == NGX_HTTP_NO_CHARSET) {
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210
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244 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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206
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245 "unknown charset \"%V\" to override",
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208
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246 r->headers_out.override_charset);
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206
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247
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248 return ngx_http_next_header_filter(r);
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249 }
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250
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251 } else {
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252 mlcf = ngx_http_get_module_loc_conf(r,
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253 ngx_http_charset_filter_module);
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254 charset = mlcf->charset;
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255
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256 if (charset == NGX_HTTP_NO_CHARSET) {
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257 return ngx_http_next_header_filter(r);
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258 }
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259
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260 if (r->headers_out.charset.len) {
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261 if (mlcf->override_charset == 0) {
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262 return ngx_http_next_header_filter(r);
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263 }
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264
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265 } else {
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394
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266 if (ngx_http_test_content_type(r, &mlcf->types) == NULL) {
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206
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267 return ngx_http_next_header_filter(r);
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268 }
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269 }
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244
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270
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271 if (charset >= NGX_HTTP_CHARSET_VAR) {
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272 vv = ngx_http_get_indexed_variable(r,
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273 charset - NGX_HTTP_CHARSET_VAR);
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274
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250
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275 if (vv == NULL || vv->not_found) {
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276 return NGX_ERROR;
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277 }
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278
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320
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279 s.len = vv->len;
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280 s.data = vv->data;
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281
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282 charset = ngx_http_charset_get_charset(charsets, n, &s);
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244
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283 }
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202
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284 }
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285
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286 } else {
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206
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287 ctx = ngx_http_get_module_ctx(r->main, ngx_http_charset_filter_module);
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288
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289 if (ctx == NULL) {
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290
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291 mc = &r->main->headers_out.charset;
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292
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293 if (mc->len == 0) {
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294 return ngx_http_next_header_filter(r);
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295 }
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296
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297 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t));
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298 if (ctx == NULL) {
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299 return NGX_ERROR;
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300 }
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301
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302 ngx_http_set_ctx(r->main, ctx, ngx_http_charset_filter_module);
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202
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303
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244
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304 charset = ngx_http_charset_get_charset(charsets, n, mc);
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206
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305
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306 ctx->charset = charset;
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307
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210
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308 } else {
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309 charset = ctx->charset;
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202
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310 }
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50
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311 }
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312
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206
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313 /* source charset */
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184
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314
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206
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315 if (r->headers_out.charset.len == 0) {
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316 lcf = ngx_http_get_module_loc_conf(r, ngx_http_charset_filter_module);
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184
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317
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244
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318 source_charset = lcf->source_charset;
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319
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320 if (source_charset >= NGX_HTTP_CHARSET_VAR) {
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321 vv = ngx_http_get_indexed_variable(r,
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322 source_charset - NGX_HTTP_CHARSET_VAR);
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323
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250
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324 if (vv == NULL || vv->not_found) {
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325 return NGX_ERROR;
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326 }
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327
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320
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328 s.len = vv->len;
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329 s.data = vv->data;
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330
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331 source_charset = ngx_http_charset_get_charset(charsets, n, &s);
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244
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332 }
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333
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210
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334 if (charset != NGX_HTTP_NO_CHARSET) {
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335 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset,
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244
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336 source_charset);
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210
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337 }
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338
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244
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339 if (source_charset == NGX_CONF_UNSET) {
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210
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340 return ngx_http_next_header_filter(r);
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341 }
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342
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244
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343 from = &charsets[source_charset].name;
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212
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344 to = &r->main->headers_out.charset;
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210
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345
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212
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346 goto no_charset_map;
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206
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347 }
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184
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348
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206
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349 source_charset = ngx_http_charset_get_charset(charsets, n,
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244
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350 &r->headers_out.charset);
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184
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351
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210
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352 if (charset == NGX_HTTP_NO_CHARSET
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353 || source_charset == NGX_HTTP_NO_CHARSET)
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354 {
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355 if (charset != source_charset
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356 || ngx_strcasecmp(r->main->headers_out.charset.data,
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357 r->headers_out.charset.data)
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358 != 0)
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359 {
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212
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360 from = &r->headers_out.charset;
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361 to = (charset == NGX_HTTP_NO_CHARSET) ?
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362 &r->main->headers_out.charset:
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363 &charsets[charset].name;
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364
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365 goto no_charset_map;
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210
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366 }
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184
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367
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206
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368 return ngx_http_next_header_filter(r);
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369 }
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184
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370
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206
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371 if (source_charset != charset
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372 && (charsets[source_charset].tables == NULL
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373 || charsets[source_charset].tables[charset] == NULL))
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374 {
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212
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375 from = &charsets[source_charset].name;
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|
|
376 to = &charsets[charset].name;
|
|
184
|
377
|
|
212
|
378 goto no_charset_map;
|
|
50
|
379 }
|
|
|
380
|
|
206
|
381 r->headers_out.content_type.len = r->headers_out.content_type_len;
|
|
|
382
|
|
|
383 return ngx_http_charset_set_charset(r, mcf->charsets.elts, charset,
|
|
|
384 source_charset);
|
|
212
|
385
|
|
|
386 no_charset_map:
|
|
|
387
|
|
|
388 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
342
|
389 "no \"charset_map\" between the charsets \"%V\" and \"%V\"",
|
|
|
390 from, to);
|
|
212
|
391
|
|
|
392 return ngx_http_next_header_filter(r);
|
|
206
|
393 }
|
|
|
394
|
|
|
395
|
|
|
396 static ngx_int_t
|
|
|
397 ngx_http_charset_get_charset(ngx_http_charset_t *charsets, ngx_uint_t n,
|
|
244
|
398 ngx_str_t *charset)
|
|
206
|
399 {
|
|
|
400 ngx_uint_t i;
|
|
|
401
|
|
|
402 for (i = 0; i < n; i++) {
|
|
320
|
403 if (charsets[i].name.len != charset->len) {
|
|
244
|
404 continue;
|
|
|
405 }
|
|
|
406
|
|
320
|
407 if (ngx_strncasecmp(charsets[i].name.data, charset->data, charset->len)
|
|
|
408 == 0)
|
|
|
409 {
|
|
206
|
410 return i;
|
|
|
411 }
|
|
|
412 }
|
|
|
413
|
|
|
414 return NGX_HTTP_NO_CHARSET;
|
|
|
415 }
|
|
|
416
|
|
|
417
|
|
|
418 static ngx_int_t
|
|
|
419 ngx_http_charset_set_charset(ngx_http_request_t *r,
|
|
|
420 ngx_http_charset_t *charsets, ngx_int_t charset, ngx_int_t source_charset)
|
|
|
421 {
|
|
|
422 ngx_http_charset_ctx_t *ctx;
|
|
|
423
|
|
50
|
424 if (r->headers_out.status == NGX_HTTP_MOVED_PERMANENTLY
|
|
|
425 || r->headers_out.status == NGX_HTTP_MOVED_TEMPORARILY)
|
|
|
426 {
|
|
|
427 /*
|
|
184
|
428 * do not set charset for the redirect because NN 4.x
|
|
|
429 * use this charset instead of the next page charset
|
|
50
|
430 */
|
|
|
431
|
|
|
432 r->headers_out.charset.len = 0;
|
|
206
|
433
|
|
50
|
434 return ngx_http_next_header_filter(r);
|
|
|
435 }
|
|
|
436
|
|
184
|
437 r->headers_out.charset = charsets[charset].name;
|
|
|
438 r->utf8 = charsets[charset].utf8;
|
|
|
439
|
|
|
440 if (source_charset == NGX_CONF_UNSET || source_charset == charset) {
|
|
50
|
441 return ngx_http_next_header_filter(r);
|
|
|
442 }
|
|
|
443
|
|
|
444 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_charset_ctx_t));
|
|
|
445 if (ctx == NULL) {
|
|
|
446 return NGX_ERROR;
|
|
|
447 }
|
|
|
448
|
|
|
449 ngx_http_set_ctx(r, ctx, ngx_http_charset_filter_module);
|
|
|
450
|
|
184
|
451 ctx->table = charsets[source_charset].tables[charset];
|
|
|
452 ctx->charset = charset;
|
|
206
|
453 ctx->length = charsets[charset].length;
|
|
|
454 ctx->from_utf8 = charsets[source_charset].utf8;
|
|
|
455 ctx->to_utf8 = charsets[charset].utf8;
|
|
|
456
|
|
212
|
457 r->filter_need_in_memory = 1;
|
|
|
458
|
|
206
|
459 if ((ctx->to_utf8 || ctx->from_utf8) && r == r->main) {
|
|
|
460 ngx_http_clear_content_length(r);
|
|
212
|
461
|
|
|
462 } else {
|
|
|
463 r->filter_need_temporary = 1;
|
|
206
|
464 }
|
|
50
|
465
|
|
|
466 return ngx_http_next_header_filter(r);
|
|
|
467 }
|
|
|
468
|
|
|
469
|
|
|
470 static ngx_int_t
|
|
|
471 ngx_http_charset_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
|
|
|
472 {
|
|
206
|
473 ngx_int_t rc;
|
|
|
474 ngx_buf_t *b;
|
|
|
475 ngx_chain_t *cl, *out, **ll;
|
|
184
|
476 ngx_http_charset_ctx_t *ctx;
|
|
50
|
477
|
|
|
478 ctx = ngx_http_get_module_ctx(r, ngx_http_charset_filter_module);
|
|
|
479
|
|
184
|
480 if (ctx == NULL || ctx->table == NULL) {
|
|
50
|
481 return ngx_http_next_body_filter(r, in);
|
|
|
482 }
|
|
|
483
|
|
206
|
484 if ((ctx->to_utf8 || ctx->from_utf8) || ctx->busy) {
|
|
|
485
|
|
|
486 out = NULL;
|
|
|
487 ll = &out;
|
|
|
488
|
|
|
489 for (cl = in; cl; cl = cl->next) {
|
|
|
490 b = cl->buf;
|
|
|
491
|
|
|
492 if (ngx_buf_size(b) == 0) {
|
|
214
|
493
|
|
|
494 *ll = ngx_alloc_chain_link(r->pool);
|
|
|
495 if (*ll == NULL) {
|
|
|
496 return NGX_ERROR;
|
|
|
497 }
|
|
|
498
|
|
|
499 (*ll)->buf = b;
|
|
|
500 (*ll)->next = NULL;
|
|
|
501
|
|
|
502 ll = &(*ll)->next;
|
|
|
503
|
|
206
|
504 continue;
|
|
|
505 }
|
|
|
506
|
|
|
507 if (ctx->to_utf8) {
|
|
|
508 *ll = ngx_http_charset_recode_to_utf8(r->pool, b, ctx);
|
|
|
509
|
|
|
510 } else {
|
|
|
511 *ll = ngx_http_charset_recode_from_utf8(r->pool, b, ctx);
|
|
|
512 }
|
|
|
513
|
|
|
514 if (*ll == NULL) {
|
|
|
515 return NGX_ERROR;
|
|
|
516 }
|
|
|
517
|
|
|
518 while (*ll) {
|
|
|
519 ll = &(*ll)->next;
|
|
|
520 }
|
|
|
521 }
|
|
|
522
|
|
|
523 rc = ngx_http_next_body_filter(r, out);
|
|
|
524
|
|
|
525 if (out) {
|
|
|
526 if (ctx->busy == NULL) {
|
|
|
527 ctx->busy = out;
|
|
|
528
|
|
|
529 } else {
|
|
|
530 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ }
|
|
|
531 cl->next = out;
|
|
|
532 }
|
|
|
533 }
|
|
|
534
|
|
|
535 while (ctx->busy) {
|
|
|
536
|
|
|
537 cl = ctx->busy;
|
|
|
538 b = cl->buf;
|
|
|
539
|
|
|
540 if (ngx_buf_size(b) != 0) {
|
|
|
541 break;
|
|
|
542 }
|
|
|
543
|
|
|
544 ctx->busy = cl->next;
|
|
|
545
|
|
|
546 if (b->tag != (ngx_buf_tag_t) &ngx_http_charset_filter_module) {
|
|
|
547 continue;
|
|
|
548 }
|
|
|
549
|
|
|
550 if (b->shadow) {
|
|
|
551 b->shadow->pos = b->shadow->last;
|
|
|
552 }
|
|
|
553
|
|
|
554 if (b->pos) {
|
|
|
555 cl->next = ctx->free_buffers;
|
|
|
556 ctx->free_buffers = cl;
|
|
|
557 continue;
|
|
|
558 }
|
|
|
559
|
|
|
560 cl->next = ctx->free_bufs;
|
|
|
561 ctx->free_bufs = cl;
|
|
|
562 }
|
|
|
563
|
|
|
564 return rc;
|
|
|
565 }
|
|
|
566
|
|
50
|
567 for (cl = in; cl; cl = cl->next) {
|
|
184
|
568 (void) ngx_http_charset_recode(cl->buf, ctx->table);
|
|
50
|
569 }
|
|
|
570
|
|
|
571 return ngx_http_next_body_filter(r, in);
|
|
|
572 }
|
|
|
573
|
|
|
574
|
|
|
575 static ngx_uint_t
|
|
184
|
576 ngx_http_charset_recode(ngx_buf_t *b, u_char *table)
|
|
50
|
577 {
|
|
370
|
578 u_char *p, *last;
|
|
184
|
579
|
|
370
|
580 last = b->last;
|
|
50
|
581
|
|
370
|
582 for (p = b->pos; p < last; p++) {
|
|
|
583
|
|
|
584 if (*p != table[*p]) {
|
|
|
585 goto recode;
|
|
50
|
586 }
|
|
|
587 }
|
|
|
588
|
|
184
|
589 return 0;
|
|
370
|
590
|
|
|
591 recode:
|
|
|
592
|
|
|
593 do {
|
|
|
594 if (*p != table[*p]) {
|
|
|
595 *p = table[*p];
|
|
|
596 }
|
|
|
597
|
|
|
598 p++;
|
|
|
599
|
|
|
600 } while (p < last);
|
|
|
601
|
|
|
602 b->in_file = 0;
|
|
|
603
|
|
|
604 return 1;
|
|
50
|
605 }
|
|
|
606
|
|
|
607
|
|
206
|
608 static ngx_chain_t *
|
|
|
609 ngx_http_charset_recode_from_utf8(ngx_pool_t *pool, ngx_buf_t *buf,
|
|
|
610 ngx_http_charset_ctx_t *ctx)
|
|
|
611 {
|
|
|
612 size_t len, size;
|
|
|
613 u_char c, *p, *src, *dst, *saved, **table;
|
|
|
614 uint32_t n;
|
|
|
615 ngx_buf_t *b;
|
|
|
616 ngx_uint_t i;
|
|
|
617 ngx_chain_t *out, *cl, **ll;
|
|
|
618
|
|
|
619 src = buf->pos;
|
|
|
620
|
|
|
621 if (ctx->saved_len == 0) {
|
|
|
622
|
|
|
623 for ( /* void */ ; src < buf->last; src++) {
|
|
|
624
|
|
|
625 if (*src < 0x80) {
|
|
|
626 continue;
|
|
|
627 }
|
|
|
628
|
|
|
629 len = src - buf->pos;
|
|
|
630
|
|
|
631 if (len > 512) {
|
|
|
632 out = ngx_http_charset_get_buf(pool, ctx);
|
|
|
633 if (out == NULL) {
|
|
|
634 return NULL;
|
|
|
635 }
|
|
|
636
|
|
|
637 b = out->buf;
|
|
|
638
|
|
|
639 b->temporary = buf->temporary;
|
|
|
640 b->memory = buf->memory;
|
|
|
641 b->mmap = buf->mmap;
|
|
|
642 b->flush = buf->flush;
|
|
|
643
|
|
|
644 b->pos = buf->pos;
|
|
|
645 b->last = src;
|
|
|
646
|
|
|
647 out->buf = b;
|
|
|
648 out->next = NULL;
|
|
|
649
|
|
|
650 size = buf->last - src;
|
|
|
651
|
|
|
652 saved = src;
|
|
390
|
653 n = ngx_utf8_decode(&saved, size);
|
|
206
|
654
|
|
|
655 if (n == 0xfffffffe) {
|
|
|
656 /* incomplete UTF-8 symbol */
|
|
|
657
|
|
|
658 ngx_memcpy(ctx->saved, src, size);
|
|
|
659 ctx->saved_len = size;
|
|
|
660
|
|
|
661 b->shadow = buf;
|
|
|
662
|
|
|
663 return out;
|
|
|
664 }
|
|
|
665
|
|
|
666 } else {
|
|
|
667 out = NULL;
|
|
|
668 size = len + buf->last - src;
|
|
|
669 src = buf->pos;
|
|
|
670 }
|
|
|
671
|
|
|
672 if (size < NGX_HTML_ENTITY_LEN) {
|
|
|
673 size += NGX_HTML_ENTITY_LEN;
|
|
|
674 }
|
|
|
675
|
|
|
676 cl = ngx_http_charset_get_buffer(pool, ctx, size);
|
|
|
677 if (cl == NULL) {
|
|
|
678 return NULL;
|
|
|
679 }
|
|
|
680
|
|
|
681 if (out) {
|
|
|
682 out->next = cl;
|
|
|
683
|
|
|
684 } else {
|
|
|
685 out = cl;
|
|
|
686 }
|
|
|
687
|
|
|
688 b = cl->buf;
|
|
|
689 dst = b->pos;
|
|
|
690
|
|
|
691 goto recode;
|
|
|
692 }
|
|
|
693
|
|
|
694 out = ngx_alloc_chain_link(pool);
|
|
|
695 if (out == NULL) {
|
|
|
696 return NULL;
|
|
|
697 }
|
|
|
698
|
|
|
699 out->buf = buf;
|
|
|
700 out->next = NULL;
|
|
|
701
|
|
|
702 return out;
|
|
|
703 }
|
|
|
704
|
|
|
705 /* process incomplete UTF sequence from previous buffer */
|
|
|
706
|
|
|
707 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pool->log, 0,
|
|
|
708 "http charset utf saved: %z", ctx->saved_len);
|
|
|
709
|
|
|
710 p = src;
|
|
|
711
|
|
|
712 for (i = ctx->saved_len; i < NGX_UTF_LEN; i++) {
|
|
|
713 ctx->saved[i] = *p++;
|
|
|
714
|
|
|
715 if (p == buf->last) {
|
|
|
716 break;
|
|
|
717 }
|
|
|
718 }
|
|
|
719
|
|
|
720 saved = ctx->saved;
|
|
390
|
721 n = ngx_utf8_decode(&saved, i);
|
|
206
|
722
|
|
|
723 c = '\0';
|
|
|
724
|
|
|
725 if (n < 0x10000) {
|
|
|
726 table = (u_char **) ctx->table;
|
|
|
727 p = table[n >> 8];
|
|
|
728
|
|
|
729 if (p) {
|
|
|
730 c = p[n & 0xff];
|
|
|
731 }
|
|
|
732
|
|
|
733 } else if (n == 0xfffffffe) {
|
|
|
734
|
|
|
735 /* incomplete UTF-8 symbol */
|
|
|
736
|
|
|
737 if (i < NGX_UTF_LEN) {
|
|
|
738 out = ngx_http_charset_get_buf(pool, ctx);
|
|
|
739 if (out == NULL) {
|
|
|
740 return NULL;
|
|
|
741 }
|
|
|
742
|
|
|
743 b = out->buf;
|
|
|
744
|
|
|
745 b->pos = buf->pos;
|
|
|
746 b->last = buf->last;
|
|
|
747 b->sync = 1;
|
|
|
748 b->shadow = buf;
|
|
|
749
|
|
|
750 ngx_memcpy(&ctx->saved[ctx->saved_len], src, i);
|
|
|
751 ctx->saved_len += i;
|
|
|
752
|
|
|
753 return out;
|
|
|
754 }
|
|
|
755 }
|
|
|
756
|
|
|
757 size = buf->last - buf->pos;
|
|
|
758
|
|
|
759 if (size < NGX_HTML_ENTITY_LEN) {
|
|
|
760 size += NGX_HTML_ENTITY_LEN;
|
|
|
761 }
|
|
|
762
|
|
|
763 cl = ngx_http_charset_get_buffer(pool, ctx, size);
|
|
|
764 if (cl == NULL) {
|
|
|
765 return NULL;
|
|
|
766 }
|
|
|
767
|
|
|
768 out = cl;
|
|
|
769
|
|
|
770 b = cl->buf;
|
|
|
771 dst = b->pos;
|
|
|
772
|
|
|
773 if (c) {
|
|
|
774 *dst++ = c;
|
|
|
775
|
|
|
776 } else if (n == 0xfffffffe) {
|
|
|
777 *dst++ = '?';
|
|
|
778
|
|
|
779 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0,
|
|
|
780 "http charset invalid utf 0");
|
|
|
781
|
|
|
782 saved = &ctx->saved[NGX_UTF_LEN];
|
|
|
783
|
|
|
784 } else if (n > 0x10ffff) {
|
|
|
785 *dst++ = '?';
|
|
|
786
|
|
|
787 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0,
|
|
|
788 "http charset invalid utf 1");
|
|
|
789
|
|
|
790 } else {
|
|
|
791 dst = ngx_sprintf(dst, "&#%uD;", n);
|
|
|
792 }
|
|
|
793
|
|
|
794 src += (saved - ctx->saved) - ctx->saved_len;
|
|
|
795 ctx->saved_len = 0;
|
|
|
796
|
|
|
797 recode:
|
|
|
798
|
|
|
799 ll = &cl->next;
|
|
|
800
|
|
|
801 table = (u_char **) ctx->table;
|
|
|
802
|
|
|
803 while (src < buf->last) {
|
|
|
804
|
|
|
805 if ((size_t) (b->end - dst) < NGX_HTML_ENTITY_LEN) {
|
|
|
806 b->last = dst;
|
|
|
807
|
|
|
808 size = buf->last - src + NGX_HTML_ENTITY_LEN;
|
|
|
809
|
|
|
810 cl = ngx_http_charset_get_buffer(pool, ctx, size);
|
|
|
811 if (cl == NULL) {
|
|
|
812 return NULL;
|
|
|
813 }
|
|
|
814
|
|
|
815 *ll = cl;
|
|
|
816 ll = &cl->next;
|
|
|
817
|
|
|
818 b = cl->buf;
|
|
|
819 dst = b->pos;
|
|
|
820 }
|
|
|
821
|
|
|
822 if (*src < 0x80) {
|
|
|
823 *dst++ = *src++;
|
|
|
824 continue;
|
|
|
825 }
|
|
|
826
|
|
|
827 len = buf->last - src;
|
|
|
828
|
|
390
|
829 n = ngx_utf8_decode(&src, len);
|
|
206
|
830
|
|
|
831 if (n < 0x10000) {
|
|
|
832
|
|
|
833 p = table[n >> 8];
|
|
|
834
|
|
|
835 if (p) {
|
|
|
836 c = p[n & 0xff];
|
|
|
837
|
|
|
838 if (c) {
|
|
|
839 *dst++ = c;
|
|
|
840 continue;
|
|
|
841 }
|
|
|
842 }
|
|
|
843
|
|
|
844 dst = ngx_sprintf(dst, "&#%uD;", n);
|
|
|
845
|
|
|
846 continue;
|
|
|
847 }
|
|
|
848
|
|
|
849 if (n == 0xfffffffe) {
|
|
|
850 /* incomplete UTF-8 symbol */
|
|
|
851
|
|
|
852 ngx_memcpy(ctx->saved, src, len);
|
|
|
853 ctx->saved_len = len;
|
|
|
854
|
|
|
855 if (b->pos == dst) {
|
|
|
856 b->sync = 1;
|
|
|
857 b->temporary = 0;
|
|
|
858 }
|
|
|
859
|
|
|
860 break;
|
|
|
861 }
|
|
|
862
|
|
|
863 if (n > 0x10ffff) {
|
|
|
864 *dst++ = '?';
|
|
|
865
|
|
|
866 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pool->log, 0,
|
|
|
867 "http charset invalid utf 2");
|
|
|
868
|
|
|
869 continue;
|
|
|
870 }
|
|
|
871
|
|
|
872 /* n > 0xffff */
|
|
|
873
|
|
|
874 dst = ngx_sprintf(dst, "&#%uD;", n);
|
|
|
875 }
|
|
|
876
|
|
|
877 b->last = dst;
|
|
|
878
|
|
|
879 b->last_buf = buf->last_buf;
|
|
|
880 b->last_in_chain = buf->last_in_chain;
|
|
|
881 b->flush = buf->flush;
|
|
|
882
|
|
|
883 b->shadow = buf;
|
|
|
884
|
|
|
885 return out;
|
|
|
886 }
|
|
|
887
|
|
|
888
|
|
|
889 static ngx_chain_t *
|
|
|
890 ngx_http_charset_recode_to_utf8(ngx_pool_t *pool, ngx_buf_t *buf,
|
|
|
891 ngx_http_charset_ctx_t *ctx)
|
|
|
892 {
|
|
|
893 size_t len, size;
|
|
|
894 u_char *p, *src, *dst, *table;
|
|
|
895 ngx_buf_t *b;
|
|
|
896 ngx_chain_t *out, *cl, **ll;
|
|
|
897
|
|
|
898 table = ctx->table;
|
|
|
899
|
|
|
900 for (src = buf->pos; src < buf->last; src++) {
|
|
|
901 if (table[*src * NGX_UTF_LEN] == '\1') {
|
|
|
902 continue;
|
|
|
903 }
|
|
|
904
|
|
|
905 goto recode;
|
|
|
906 }
|
|
|
907
|
|
|
908 out = ngx_alloc_chain_link(pool);
|
|
|
909 if (out == NULL) {
|
|
|
910 return NULL;
|
|
|
911 }
|
|
|
912
|
|
|
913 out->buf = buf;
|
|
|
914 out->next = NULL;
|
|
|
915
|
|
|
916 return out;
|
|
|
917
|
|
|
918 recode:
|
|
|
919
|
|
|
920 /*
|
|
|
921 * we assume that there are about half of characters to be recoded,
|
|
|
922 * so we preallocate "size / 2 + size / 2 * ctx->length"
|
|
|
923 */
|
|
|
924
|
|
|
925 len = src - buf->pos;
|
|
|
926
|
|
|
927 if (len > 512) {
|
|
|
928 out = ngx_http_charset_get_buf(pool, ctx);
|
|
|
929 if (out == NULL) {
|
|
|
930 return NULL;
|
|
|
931 }
|
|
|
932
|
|
|
933 b = out->buf;
|
|
|
934
|
|
|
935 b->temporary = buf->temporary;
|
|
|
936 b->memory = buf->memory;
|
|
|
937 b->mmap = buf->mmap;
|
|
|
938 b->flush = buf->flush;
|
|
|
939
|
|
|
940 b->pos = buf->pos;
|
|
|
941 b->last = src;
|
|
|
942
|
|
|
943 out->buf = b;
|
|
|
944 out->next = NULL;
|
|
|
945
|
|
|
946 size = buf->last - src;
|
|
|
947 size = size / 2 + size / 2 * ctx->length;
|
|
|
948
|
|
|
949 } else {
|
|
|
950 out = NULL;
|
|
|
951
|
|
|
952 size = buf->last - src;
|
|
|
953 size = len + size / 2 + size / 2 * ctx->length;
|
|
|
954
|
|
|
955 src = buf->pos;
|
|
|
956 }
|
|
|
957
|
|
|
958 cl = ngx_http_charset_get_buffer(pool, ctx, size);
|
|
|
959 if (cl == NULL) {
|
|
|
960 return NULL;
|
|
|
961 }
|
|
|
962
|
|
|
963 if (out) {
|
|
|
964 out->next = cl;
|
|
|
965
|
|
|
966 } else {
|
|
|
967 out = cl;
|
|
|
968 }
|
|
|
969
|
|
|
970 ll = &cl->next;
|
|
|
971
|
|
|
972 b = cl->buf;
|
|
|
973 dst = b->pos;
|
|
|
974
|
|
|
975 while (src < buf->last) {
|
|
|
976
|
|
|
977 p = &table[*src++ * NGX_UTF_LEN];
|
|
|
978 len = *p++;
|
|
|
979
|
|
|
980 if ((size_t) (b->end - dst) < len) {
|
|
|
981 b->last = dst;
|
|
|
982
|
|
|
983 size = buf->last - src;
|
|
|
984 size = len + size / 2 + size / 2 * ctx->length;
|
|
|
985
|
|
|
986 cl = ngx_http_charset_get_buffer(pool, ctx, size);
|
|
|
987 if (cl == NULL) {
|
|
|
988 return NULL;
|
|
|
989 }
|
|
|
990
|
|
|
991 *ll = cl;
|
|
|
992 ll = &cl->next;
|
|
|
993
|
|
|
994 b = cl->buf;
|
|
|
995 dst = b->pos;
|
|
|
996 }
|
|
|
997
|
|
|
998 while (len) {
|
|
|
999 *dst++ = *p++;
|
|
|
1000 len--;
|
|
|
1001 }
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 b->last = dst;
|
|
|
1005
|
|
|
1006 b->last_buf = buf->last_buf;
|
|
|
1007 b->last_in_chain = buf->last_in_chain;
|
|
|
1008 b->flush = buf->flush;
|
|
|
1009
|
|
|
1010 b->shadow = buf;
|
|
|
1011
|
|
|
1012 return out;
|
|
|
1013 }
|
|
|
1014
|
|
|
1015
|
|
|
1016 static ngx_chain_t *
|
|
|
1017 ngx_http_charset_get_buf(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx)
|
|
|
1018 {
|
|
|
1019 ngx_chain_t *cl;
|
|
|
1020
|
|
|
1021 cl = ctx->free_bufs;
|
|
|
1022
|
|
|
1023 if (cl) {
|
|
|
1024 ctx->free_bufs = cl->next;
|
|
|
1025
|
|
|
1026 cl->buf->shadow = NULL;
|
|
|
1027 cl->next = NULL;
|
|
|
1028
|
|
|
1029 return cl;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 cl = ngx_alloc_chain_link(pool);
|
|
|
1033 if (cl == NULL) {
|
|
|
1034 return NULL;
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 cl->buf = ngx_calloc_buf(pool);
|
|
|
1038 if (cl->buf == NULL) {
|
|
|
1039 return NULL;
|
|
|
1040 }
|
|
|
1041
|
|
|
1042 cl->next = NULL;
|
|
|
1043
|
|
|
1044 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module;
|
|
|
1045
|
|
|
1046 return cl;
|
|
|
1047 }
|
|
|
1048
|
|
|
1049
|
|
|
1050 static ngx_chain_t *
|
|
|
1051 ngx_http_charset_get_buffer(ngx_pool_t *pool, ngx_http_charset_ctx_t *ctx,
|
|
|
1052 size_t size)
|
|
|
1053 {
|
|
|
1054 ngx_buf_t *b;
|
|
|
1055 ngx_chain_t *cl, **ll;
|
|
|
1056
|
|
|
1057 for (ll = &ctx->free_buffers, cl = ctx->free_buffers;
|
|
|
1058 cl;
|
|
|
1059 ll = &cl->next, cl = cl->next)
|
|
|
1060 {
|
|
|
1061 b = cl->buf;
|
|
|
1062
|
|
|
1063 if ((size_t) (b->end - b->start) >= size) {
|
|
|
1064 *ll = cl->next;
|
|
|
1065 cl->next = NULL;
|
|
|
1066
|
|
|
1067 b->pos = b->start;
|
|
|
1068 b->temporary = 1;
|
|
|
1069 b->shadow = NULL;
|
|
|
1070
|
|
|
1071 return cl;
|
|
|
1072 }
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 cl = ngx_alloc_chain_link(pool);
|
|
|
1076 if (cl == NULL) {
|
|
|
1077 return NULL;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 cl->buf = ngx_create_temp_buf(pool, size);
|
|
|
1081 if (cl->buf == NULL) {
|
|
|
1082 return NULL;
|
|
|
1083 }
|
|
|
1084
|
|
|
1085 cl->next = NULL;
|
|
|
1086
|
|
|
1087 cl->buf->temporary = 1;
|
|
|
1088 cl->buf->tag = (ngx_buf_tag_t) &ngx_http_charset_filter_module;
|
|
|
1089
|
|
|
1090 return cl;
|
|
|
1091 }
|
|
|
1092
|
|
|
1093
|
|
50
|
1094 static char *
|
|
206
|
1095 ngx_http_charset_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
50
|
1096 {
|
|
|
1097 ngx_http_charset_main_conf_t *mcf = conf;
|
|
|
1098
|
|
206
|
1099 char *rv;
|
|
|
1100 u_char *p, *dst2src, **pp;
|
|
|
1101 ngx_int_t src, dst;
|
|
|
1102 ngx_uint_t i, n;
|
|
|
1103 ngx_str_t *value;
|
|
|
1104 ngx_conf_t pvcf;
|
|
|
1105 ngx_http_charset_t *charset;
|
|
|
1106 ngx_http_charset_tables_t *table;
|
|
|
1107 ngx_http_charset_conf_ctx_t ctx;
|
|
50
|
1108
|
|
|
1109 value = cf->args->elts;
|
|
|
1110
|
|
|
1111 src = ngx_http_add_charset(&mcf->charsets, &value[1]);
|
|
|
1112 if (src == NGX_ERROR) {
|
|
|
1113 return NGX_CONF_ERROR;
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 dst = ngx_http_add_charset(&mcf->charsets, &value[2]);
|
|
|
1117 if (dst == NGX_ERROR) {
|
|
|
1118 return NGX_CONF_ERROR;
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 if (src == dst) {
|
|
|
1122 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1123 "\"charset_map\" between the same charsets "
|
|
|
1124 "\"%V\" and \"%V\"", &value[1], &value[2]);
|
|
|
1125 return NGX_CONF_ERROR;
|
|
|
1126 }
|
|
|
1127
|
|
|
1128 table = mcf->tables.elts;
|
|
|
1129 for (i = 0; i < mcf->tables.nelts; i++) {
|
|
|
1130 if ((src == table->src && dst == table->dst)
|
|
|
1131 || (src == table->dst && dst == table->src))
|
|
|
1132 {
|
|
|
1133 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1134 "duplicate \"charset_map\" between "
|
|
|
1135 "\"%V\" and \"%V\"", &value[1], &value[2]);
|
|
|
1136 return NGX_CONF_ERROR;
|
|
|
1137 }
|
|
|
1138 }
|
|
|
1139
|
|
|
1140 table = ngx_array_push(&mcf->tables);
|
|
|
1141 if (table == NULL) {
|
|
|
1142 return NGX_CONF_ERROR;
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 table->src = src;
|
|
|
1146 table->dst = dst;
|
|
|
1147
|
|
286
|
1148 if (ngx_strcasecmp(value[2].data, (u_char *) "utf-8") == 0) {
|
|
206
|
1149 table->src2dst = ngx_pcalloc(cf->pool, 256 * NGX_UTF_LEN);
|
|
|
1150 if (table->src2dst == NULL) {
|
|
|
1151 return NGX_CONF_ERROR;
|
|
|
1152 }
|
|
|
1153
|
|
|
1154 table->dst2src = ngx_pcalloc(cf->pool, 256 * sizeof(void *));
|
|
|
1155 if (table->dst2src == NULL) {
|
|
|
1156 return NGX_CONF_ERROR;
|
|
|
1157 }
|
|
|
1158
|
|
|
1159 dst2src = ngx_pcalloc(cf->pool, 256);
|
|
|
1160 if (dst2src == NULL) {
|
|
|
1161 return NGX_CONF_ERROR;
|
|
|
1162 }
|
|
|
1163
|
|
|
1164 pp = (u_char **) &table->dst2src[0];
|
|
|
1165 pp[0] = dst2src;
|
|
|
1166
|
|
|
1167 for (i = 0; i < 128; i++) {
|
|
|
1168 p = &table->src2dst[i * NGX_UTF_LEN];
|
|
|
1169 p[0] = '\1';
|
|
|
1170 p[1] = (u_char) i;
|
|
|
1171 dst2src[i] = (u_char) i;
|
|
|
1172 }
|
|
50
|
1173
|
|
206
|
1174 for (/* void */; i < 256; i++) {
|
|
|
1175 p = &table->src2dst[i * NGX_UTF_LEN];
|
|
|
1176 p[0] = '\1';
|
|
|
1177 p[1] = '?';
|
|
|
1178 }
|
|
|
1179
|
|
|
1180 } else {
|
|
|
1181 table->src2dst = ngx_palloc(cf->pool, 256);
|
|
|
1182 if (table->src2dst == NULL) {
|
|
|
1183 return NGX_CONF_ERROR;
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 table->dst2src = ngx_palloc(cf->pool, 256);
|
|
|
1187 if (table->dst2src == NULL) {
|
|
|
1188 return NGX_CONF_ERROR;
|
|
|
1189 }
|
|
|
1190
|
|
|
1191 for (i = 0; i < 128; i++) {
|
|
|
1192 table->src2dst[i] = (u_char) i;
|
|
|
1193 table->dst2src[i] = (u_char) i;
|
|
|
1194 }
|
|
|
1195
|
|
|
1196 for (/* void */; i < 256; i++) {
|
|
|
1197 table->src2dst[i] = '?';
|
|
|
1198 table->dst2src[i] = '?';
|
|
|
1199 }
|
|
50
|
1200 }
|
|
|
1201
|
|
206
|
1202 charset = mcf->charsets.elts;
|
|
50
|
1203
|
|
206
|
1204 ctx.table = table;
|
|
|
1205 ctx.charset = &charset[dst];
|
|
|
1206 ctx.characters = 0;
|
|
50
|
1207
|
|
|
1208 pvcf = *cf;
|
|
206
|
1209 cf->ctx = &ctx;
|
|
|
1210 cf->handler = ngx_http_charset_map;
|
|
50
|
1211 cf->handler_conf = conf;
|
|
|
1212
|
|
|
1213 rv = ngx_conf_parse(cf, NULL);
|
|
|
1214
|
|
|
1215 *cf = pvcf;
|
|
|
1216
|
|
206
|
1217 if (ctx.characters) {
|
|
|
1218 n = ctx.charset->length;
|
|
|
1219 ctx.charset->length /= ctx.characters;
|
|
|
1220
|
|
|
1221 if (((n * 10) / ctx.characters) % 10 > 4) {
|
|
|
1222 ctx.charset->length++;
|
|
|
1223 }
|
|
|
1224 }
|
|
|
1225
|
|
50
|
1226 return rv;
|
|
|
1227 }
|
|
|
1228
|
|
|
1229
|
|
|
1230 static char *
|
|
206
|
1231 ngx_http_charset_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
|
|
50
|
1232 {
|
|
206
|
1233 u_char *p, *dst2src, **pp;
|
|
|
1234 uint32_t n;
|
|
|
1235 ngx_int_t src, dst;
|
|
|
1236 ngx_str_t *value;
|
|
|
1237 ngx_uint_t i;
|
|
|
1238 ngx_http_charset_tables_t *table;
|
|
|
1239 ngx_http_charset_conf_ctx_t *ctx;
|
|
50
|
1240
|
|
|
1241 if (cf->args->nelts != 2) {
|
|
|
1242 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameters number");
|
|
|
1243 return NGX_CONF_ERROR;
|
|
|
1244 }
|
|
|
1245
|
|
|
1246 value = cf->args->elts;
|
|
|
1247
|
|
|
1248 src = ngx_hextoi(value[0].data, value[0].len);
|
|
|
1249 if (src == NGX_ERROR || src > 255) {
|
|
|
1250 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1251 "invalid value \"%V\"", &value[0]);
|
|
|
1252 return NGX_CONF_ERROR;
|
|
|
1253 }
|
|
|
1254
|
|
206
|
1255 ctx = cf->ctx;
|
|
|
1256 table = ctx->table;
|
|
|
1257
|
|
|
1258 if (ctx->charset->utf8) {
|
|
|
1259 p = &table->src2dst[src * NGX_UTF_LEN];
|
|
|
1260
|
|
|
1261 *p++ = (u_char) (value[1].len / 2);
|
|
|
1262
|
|
|
1263 for (i = 0; i < value[1].len; i += 2) {
|
|
|
1264 dst = ngx_hextoi(&value[1].data[i], 2);
|
|
|
1265 if (dst == NGX_ERROR || dst > 255) {
|
|
|
1266 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1267 "invalid value \"%V\"", &value[1]);
|
|
|
1268 return NGX_CONF_ERROR;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 *p++ = (u_char) dst;
|
|
|
1272 }
|
|
|
1273
|
|
|
1274 i /= 2;
|
|
|
1275
|
|
|
1276 ctx->charset->length += i;
|
|
|
1277 ctx->characters++;
|
|
|
1278
|
|
|
1279 p = &table->src2dst[src * NGX_UTF_LEN] + 1;
|
|
|
1280
|
|
390
|
1281 n = ngx_utf8_decode(&p, i);
|
|
206
|
1282
|
|
|
1283 if (n > 0xffff) {
|
|
|
1284 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1285 "invalid value \"%V\"", &value[1]);
|
|
|
1286 return NGX_CONF_ERROR;
|
|
|
1287 }
|
|
|
1288
|
|
|
1289 pp = (u_char **) &table->dst2src[0];
|
|
|
1290
|
|
|
1291 dst2src = pp[n >> 8];
|
|
|
1292
|
|
|
1293 if (dst2src == NULL) {
|
|
|
1294 dst2src = ngx_pcalloc(cf->pool, 256);
|
|
|
1295 if (dst2src == NULL) {
|
|
|
1296 return NGX_CONF_ERROR;
|
|
|
1297 }
|
|
|
1298
|
|
|
1299 pp[n >> 8] = dst2src;
|
|
|
1300 }
|
|
|
1301
|
|
|
1302 dst2src[n & 0xff] = (u_char) src;
|
|
|
1303
|
|
|
1304 } else {
|
|
|
1305 dst = ngx_hextoi(value[1].data, value[1].len);
|
|
|
1306 if (dst == NGX_ERROR || dst > 255) {
|
|
|
1307 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1308 "invalid value \"%V\"", &value[1]);
|
|
|
1309 return NGX_CONF_ERROR;
|
|
|
1310 }
|
|
|
1311
|
|
|
1312 table->src2dst[src] = (u_char) dst;
|
|
|
1313 table->dst2src[dst] = (u_char) src;
|
|
50
|
1314 }
|
|
|
1315
|
|
|
1316 return NGX_CONF_OK;
|
|
|
1317 }
|
|
|
1318
|
|
|
1319
|
|
|
1320 static char *
|
|
|
1321 ngx_http_set_charset_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1322 {
|
|
|
1323 char *p = conf;
|
|
|
1324
|
|
|
1325 ngx_int_t *cp;
|
|
244
|
1326 ngx_str_t *value, var;
|
|
50
|
1327 ngx_http_charset_main_conf_t *mcf;
|
|
|
1328
|
|
|
1329 cp = (ngx_int_t *) (p + cmd->offset);
|
|
|
1330
|
|
|
1331 if (*cp != NGX_CONF_UNSET) {
|
|
|
1332 return "is duplicate";
|
|
|
1333 }
|
|
|
1334
|
|
78
|
1335 value = cf->args->elts;
|
|
|
1336
|
|
|
1337 if (cmd->offset == offsetof(ngx_http_charset_loc_conf_t, charset)
|
|
|
1338 && ngx_strcmp(value[1].data, "off") == 0)
|
|
|
1339 {
|
|
|
1340 *cp = NGX_HTTP_NO_CHARSET;
|
|
|
1341 return NGX_CONF_OK;
|
|
|
1342 }
|
|
|
1343
|
|
244
|
1344
|
|
|
1345 if (value[1].data[0] == '$') {
|
|
|
1346 var.len = value[1].len - 1;
|
|
|
1347 var.data = value[1].data + 1;
|
|
|
1348
|
|
|
1349 *cp = ngx_http_get_variable_index(cf, &var);
|
|
|
1350
|
|
|
1351 if (*cp == NGX_ERROR) {
|
|
|
1352 return NGX_CONF_ERROR;
|
|
|
1353 }
|
|
|
1354
|
|
|
1355 *cp += NGX_HTTP_CHARSET_VAR;
|
|
|
1356
|
|
|
1357 return NGX_CONF_OK;
|
|
|
1358 }
|
|
|
1359
|
|
50
|
1360 mcf = ngx_http_conf_get_module_main_conf(cf,
|
|
|
1361 ngx_http_charset_filter_module);
|
|
|
1362
|
|
|
1363 *cp = ngx_http_add_charset(&mcf->charsets, &value[1]);
|
|
|
1364 if (*cp == NGX_ERROR) {
|
|
|
1365 return NGX_CONF_ERROR;
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 return NGX_CONF_OK;
|
|
|
1369 }
|
|
|
1370
|
|
|
1371
|
|
|
1372 static ngx_int_t
|
|
|
1373 ngx_http_add_charset(ngx_array_t *charsets, ngx_str_t *name)
|
|
|
1374 {
|
|
|
1375 ngx_uint_t i;
|
|
|
1376 ngx_http_charset_t *c;
|
|
|
1377
|
|
|
1378 c = charsets->elts;
|
|
|
1379 for (i = 0; i < charsets->nelts; i++) {
|
|
|
1380 if (name->len != c[i].name.len) {
|
|
|
1381 continue;
|
|
|
1382 }
|
|
|
1383
|
|
|
1384 if (ngx_strcasecmp(name->data, c[i].name.data) == 0) {
|
|
|
1385 break;
|
|
|
1386 }
|
|
|
1387 }
|
|
|
1388
|
|
|
1389 if (i < charsets->nelts) {
|
|
|
1390 return i;
|
|
|
1391 }
|
|
|
1392
|
|
|
1393 c = ngx_array_push(charsets);
|
|
|
1394 if (c == NULL) {
|
|
|
1395 return NGX_ERROR;
|
|
|
1396 }
|
|
|
1397
|
|
|
1398 c->tables = NULL;
|
|
|
1399 c->name = *name;
|
|
206
|
1400 c->length = 0;
|
|
50
|
1401
|
|
286
|
1402 if (ngx_strcasecmp(name->data, (u_char *) "utf-8") == 0) {
|
|
72
|
1403 c->utf8 = 1;
|
|
216
|
1404
|
|
|
1405 } else {
|
|
|
1406 c->utf8 = 0;
|
|
72
|
1407 }
|
|
|
1408
|
|
50
|
1409 return i;
|
|
|
1410 }
|
|
|
1411
|
|
|
1412
|
|
|
1413 static void *
|
|
|
1414 ngx_http_charset_create_main_conf(ngx_conf_t *cf)
|
|
|
1415 {
|
|
|
1416 ngx_http_charset_main_conf_t *mcf;
|
|
|
1417
|
|
|
1418 mcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_main_conf_t));
|
|
|
1419 if (mcf == NULL) {
|
|
|
1420 return NGX_CONF_ERROR;
|
|
|
1421 }
|
|
|
1422
|
|
|
1423 if (ngx_array_init(&mcf->charsets, cf->pool, 2, sizeof(ngx_http_charset_t))
|
|
454
|
1424 != NGX_OK)
|
|
50
|
1425 {
|
|
|
1426 return NGX_CONF_ERROR;
|
|
|
1427 }
|
|
|
1428
|
|
78
|
1429 if (ngx_array_init(&mcf->tables, cf->pool, 1,
|
|
454
|
1430 sizeof(ngx_http_charset_tables_t))
|
|
|
1431 != NGX_OK)
|
|
50
|
1432 {
|
|
|
1433 return NGX_CONF_ERROR;
|
|
|
1434 }
|
|
|
1435
|
|
78
|
1436 if (ngx_array_init(&mcf->recodes, cf->pool, 2,
|
|
454
|
1437 sizeof(ngx_http_charset_recode_t))
|
|
|
1438 != NGX_OK)
|
|
78
|
1439 {
|
|
|
1440 return NGX_CONF_ERROR;
|
|
|
1441 }
|
|
|
1442
|
|
50
|
1443 return mcf;
|
|
|
1444 }
|
|
|
1445
|
|
|
1446
|
|
|
1447 static void *
|
|
|
1448 ngx_http_charset_create_loc_conf(ngx_conf_t *cf)
|
|
|
1449 {
|
|
|
1450 ngx_http_charset_loc_conf_t *lcf;
|
|
|
1451
|
|
|
1452 lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_charset_loc_conf_t));
|
|
|
1453 if (lcf == NULL) {
|
|
|
1454 return NGX_CONF_ERROR;
|
|
|
1455 }
|
|
|
1456
|
|
394
|
1457 /*
|
|
|
1458 * set by ngx_pcalloc():
|
|
|
1459 *
|
|
|
1460 * lcf->types = { NULL };
|
|
|
1461 * lcf->types_keys = NULL;
|
|
|
1462 */
|
|
|
1463
|
|
78
|
1464 lcf->charset = NGX_CONF_UNSET;
|
|
50
|
1465 lcf->source_charset = NGX_CONF_UNSET;
|
|
184
|
1466 lcf->override_charset = NGX_CONF_UNSET;
|
|
50
|
1467
|
|
|
1468 return lcf;
|
|
|
1469 }
|
|
|
1470
|
|
|
1471
|
|
|
1472 static char *
|
|
|
1473 ngx_http_charset_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
1474 {
|
|
|
1475 ngx_http_charset_loc_conf_t *prev = parent;
|
|
|
1476 ngx_http_charset_loc_conf_t *conf = child;
|
|
|
1477
|
|
78
|
1478 ngx_uint_t i;
|
|
|
1479 ngx_http_charset_recode_t *recode;
|
|
|
1480 ngx_http_charset_main_conf_t *mcf;
|
|
50
|
1481
|
|
396
|
1482 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types,
|
|
|
1483 prev->types_keys, &prev->types,
|
|
|
1484 ngx_http_charset_default_types)
|
|
|
1485 != NGX_OK)
|
|
|
1486 {
|
|
|
1487 return NGX_CONF_ERROR;
|
|
|
1488 }
|
|
|
1489
|
|
184
|
1490 ngx_conf_merge_value(conf->override_charset, prev->override_charset, 0);
|
|
78
|
1491 ngx_conf_merge_value(conf->charset, prev->charset, NGX_HTTP_NO_CHARSET);
|
|
50
|
1492
|
|
|
1493 if (conf->source_charset == NGX_CONF_UNSET) {
|
|
|
1494 conf->source_charset = prev->source_charset;
|
|
|
1495 }
|
|
|
1496
|
|
78
|
1497 if (conf->charset == NGX_HTTP_NO_CHARSET
|
|
|
1498 || conf->source_charset == NGX_CONF_UNSET
|
|
|
1499 || conf->charset == conf->source_charset)
|
|
50
|
1500 {
|
|
78
|
1501 return NGX_CONF_OK;
|
|
50
|
1502 }
|
|
|
1503
|
|
342
|
1504 if (conf->source_charset >= NGX_HTTP_CHARSET_VAR
|
|
|
1505 || conf->charset >= NGX_HTTP_CHARSET_VAR)
|
|
|
1506 {
|
|
|
1507 return NGX_CONF_OK;
|
|
|
1508 }
|
|
|
1509
|
|
78
|
1510 mcf = ngx_http_conf_get_module_main_conf(cf,
|
|
|
1511 ngx_http_charset_filter_module);
|
|
|
1512 recode = mcf->recodes.elts;
|
|
|
1513 for (i = 0; i < mcf->recodes.nelts; i++) {
|
|
|
1514 if (conf->source_charset == recode[i].src
|
|
|
1515 && conf->charset == recode[i].dst)
|
|
|
1516 {
|
|
|
1517 return NGX_CONF_OK;
|
|
|
1518 }
|
|
50
|
1519 }
|
|
|
1520
|
|
78
|
1521 recode = ngx_array_push(&mcf->recodes);
|
|
|
1522 if (recode == NULL) {
|
|
50
|
1523 return NGX_CONF_ERROR;
|
|
|
1524 }
|
|
|
1525
|
|
78
|
1526 recode->src = conf->source_charset;
|
|
|
1527 recode->dst = conf->charset;
|
|
|
1528
|
|
50
|
1529 return NGX_CONF_OK;
|
|
|
1530 }
|
|
78
|
1531
|
|
|
1532
|
|
|
1533 static ngx_int_t
|
|
|
1534 ngx_http_charset_postconfiguration(ngx_conf_t *cf)
|
|
|
1535 {
|
|
184
|
1536 u_char **src, **dst;
|
|
78
|
1537 ngx_int_t c;
|
|
|
1538 ngx_uint_t i, t;
|
|
|
1539 ngx_http_charset_t *charset;
|
|
|
1540 ngx_http_charset_recode_t *recode;
|
|
|
1541 ngx_http_charset_tables_t *tables;
|
|
|
1542 ngx_http_charset_main_conf_t *mcf;
|
|
|
1543
|
|
|
1544 mcf = ngx_http_conf_get_module_main_conf(cf,
|
|
|
1545 ngx_http_charset_filter_module);
|
|
|
1546
|
|
|
1547 recode = mcf->recodes.elts;
|
|
|
1548 tables = mcf->tables.elts;
|
|
|
1549 charset = mcf->charsets.elts;
|
|
|
1550
|
|
|
1551 for (i = 0; i < mcf->recodes.nelts; i++) {
|
|
|
1552
|
|
|
1553 c = recode[i].src;
|
|
|
1554
|
|
|
1555 for (t = 0; t < mcf->tables.nelts; t++) {
|
|
|
1556
|
|
|
1557 if (c == tables[t].src && recode[i].dst == tables[t].dst) {
|
|
|
1558 goto next;
|
|
|
1559 }
|
|
|
1560
|
|
|
1561 if (c == tables[t].dst && recode[i].dst == tables[t].src) {
|
|
|
1562 goto next;
|
|
|
1563 }
|
|
|
1564 }
|
|
|
1565
|
|
|
1566 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
342
|
1567 "no \"charset_map\" between the charsets \"%V\" and \"%V\"",
|
|
|
1568 &charset[c].name, &charset[recode[i].dst].name);
|
|
78
|
1569 return NGX_ERROR;
|
|
|
1570
|
|
|
1571 next:
|
|
|
1572 continue;
|
|
|
1573 }
|
|
|
1574
|
|
184
|
1575
|
|
|
1576 for (t = 0; t < mcf->tables.nelts; t++) {
|
|
|
1577
|
|
|
1578 src = charset[tables[t].src].tables;
|
|
|
1579
|
|
|
1580 if (src == NULL) {
|
|
|
1581 src = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts);
|
|
|
1582 if (src == NULL) {
|
|
|
1583 return NGX_ERROR;
|
|
|
1584 }
|
|
|
1585
|
|
|
1586 charset[tables[t].src].tables = src;
|
|
|
1587 }
|
|
|
1588
|
|
|
1589 dst = charset[tables[t].dst].tables;
|
|
|
1590
|
|
|
1591 if (dst == NULL) {
|
|
|
1592 dst = ngx_pcalloc(cf->pool, sizeof(u_char *) * mcf->charsets.nelts);
|
|
|
1593 if (dst == NULL) {
|
|
|
1594 return NGX_ERROR;
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 charset[tables[t].dst].tables = dst;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600 src[tables[t].dst] = tables[t].src2dst;
|
|
|
1601 dst[tables[t].src] = tables[t].dst2src;
|
|
|
1602 }
|
|
|
1603
|
|
230
|
1604 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
1605 ngx_http_top_header_filter = ngx_http_charset_header_filter;
|
|
|
1606
|
|
|
1607 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
1608 ngx_http_top_body_filter = ngx_http_charset_body_filter;
|
|
|
1609
|
|
78
|
1610 return NGX_OK;
|
|
|
1611 }
|
