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296
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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 typedef struct {
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464
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13 ngx_str_t match;
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14 ngx_http_complex_value_t value;
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296
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15
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464
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16 ngx_hash_t types;
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296
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17
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464
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18 ngx_flag_t once;
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394
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19
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464
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20 ngx_array_t *types_keys;
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296
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21 } ngx_http_sub_loc_conf_t;
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22
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23
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24 typedef enum {
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25 sub_start_state = 0,
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26 sub_match_state,
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27 } ngx_http_sub_state_e;
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28
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29
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30 typedef struct {
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464
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31 ngx_str_t match;
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584
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32 ngx_str_t saved;
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33 ngx_str_t looked;
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296
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34
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464
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35 ngx_uint_t once; /* unsigned once:1 */
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296
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36
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464
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37 ngx_buf_t *buf;
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296
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38
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464
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39 u_char *pos;
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40 u_char *copy_start;
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41 u_char *copy_end;
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296
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42
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464
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43 ngx_chain_t *in;
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44 ngx_chain_t *out;
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45 ngx_chain_t **last_out;
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46 ngx_chain_t *busy;
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47 ngx_chain_t *free;
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296
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48
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464
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49 ngx_str_t sub;
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296
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50
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464
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51 ngx_uint_t state;
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296
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52 } ngx_http_sub_ctx_t;
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53
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54
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55 static ngx_int_t ngx_http_sub_output(ngx_http_request_t *r,
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56 ngx_http_sub_ctx_t *ctx);
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57 static ngx_int_t ngx_http_sub_parse(ngx_http_request_t *r,
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58 ngx_http_sub_ctx_t *ctx);
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59
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60 static char * ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd,
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61 void *conf);
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62 static void *ngx_http_sub_create_conf(ngx_conf_t *cf);
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63 static char *ngx_http_sub_merge_conf(ngx_conf_t *cf,
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64 void *parent, void *child);
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65 static ngx_int_t ngx_http_sub_filter_init(ngx_conf_t *cf);
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66
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67
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68 static ngx_command_t ngx_http_sub_filter_commands[] = {
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69
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70 { ngx_string("sub_filter"),
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71 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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72 ngx_http_sub_filter,
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73 NGX_HTTP_LOC_CONF_OFFSET,
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74 0,
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75 NULL },
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76
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77 { ngx_string("sub_filter_types"),
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78 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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394
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79 ngx_http_types_slot,
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296
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80 NGX_HTTP_LOC_CONF_OFFSET,
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394
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81 offsetof(ngx_http_sub_loc_conf_t, types_keys),
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82 &ngx_http_html_default_types[0] },
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296
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83
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84 { ngx_string("sub_filter_once"),
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85 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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86 ngx_conf_set_flag_slot,
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87 NGX_HTTP_LOC_CONF_OFFSET,
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88 offsetof(ngx_http_sub_loc_conf_t, once),
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89 NULL },
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90
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91 ngx_null_command
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92 };
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93
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94
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95 static ngx_http_module_t ngx_http_sub_filter_module_ctx = {
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96 NULL, /* preconfiguration */
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97 ngx_http_sub_filter_init, /* postconfiguration */
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98
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99 NULL, /* create main configuration */
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100 NULL, /* init main configuration */
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101
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102 NULL, /* create server configuration */
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103 NULL, /* merge server configuration */
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104
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105 ngx_http_sub_create_conf, /* create location configuration */
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106 ngx_http_sub_merge_conf /* merge location configuration */
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107 };
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108
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109
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110 ngx_module_t ngx_http_sub_filter_module = {
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111 NGX_MODULE_V1,
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112 &ngx_http_sub_filter_module_ctx, /* module context */
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113 ngx_http_sub_filter_commands, /* module directives */
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114 NGX_HTTP_MODULE, /* module type */
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115 NULL, /* init master */
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116 NULL, /* init module */
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117 NULL, /* init process */
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118 NULL, /* init thread */
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119 NULL, /* exit thread */
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120 NULL, /* exit process */
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121 NULL, /* exit master */
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122 NGX_MODULE_V1_PADDING
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123 };
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124
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125
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126 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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127 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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128
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129
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130 static ngx_int_t
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131 ngx_http_sub_header_filter(ngx_http_request_t *r)
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132 {
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133 ngx_http_sub_ctx_t *ctx;
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134 ngx_http_sub_loc_conf_t *slcf;
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135
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136 slcf = ngx_http_get_module_loc_conf(r, ngx_http_sub_filter_module);
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137
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138 if (slcf->match.len == 0
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394
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139 || r->headers_out.content_length_n == 0
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140 || ngx_http_test_content_type(r, &slcf->types) == NULL)
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296
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141 {
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142 return ngx_http_next_header_filter(r);
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143 }
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144
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145 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_sub_ctx_t));
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146 if (ctx == NULL) {
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147 return NGX_ERROR;
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148 }
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149
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584
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150 ctx->saved.data = ngx_pnalloc(r->pool, slcf->match.len);
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151 if (ctx->saved.data == NULL) {
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152 return NGX_ERROR;
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153 }
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154
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155 ctx->looked.data = ngx_pnalloc(r->pool, slcf->match.len);
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156 if (ctx->looked.data == NULL) {
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157 return NGX_ERROR;
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158 }
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159
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296
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160 ngx_http_set_ctx(r, ctx, ngx_http_sub_filter_module);
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161
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162 ctx->match = slcf->match;
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163 ctx->last_out = &ctx->out;
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164
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165 r->filter_need_in_memory = 1;
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166
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167 if (r == r->main) {
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168 ngx_http_clear_content_length(r);
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169 ngx_http_clear_last_modified(r);
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170 }
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171
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172 return ngx_http_next_header_filter(r);
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173 }
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174
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175
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176 static ngx_int_t
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177 ngx_http_sub_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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178 {
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179 ngx_int_t rc;
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180 ngx_buf_t *b;
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181 ngx_chain_t *cl;
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182 ngx_http_sub_ctx_t *ctx;
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183 ngx_http_sub_loc_conf_t *slcf;
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184
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185 ctx = ngx_http_get_module_ctx(r, ngx_http_sub_filter_module);
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186
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187 if (ctx == NULL) {
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188 return ngx_http_next_body_filter(r, in);
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189 }
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190
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191 if ((in == NULL
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192 && ctx->buf == NULL
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193 && ctx->in == NULL
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194 && ctx->busy == NULL))
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195 {
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196 return ngx_http_next_body_filter(r, in);
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197 }
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198
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199 if (ctx->once && (ctx->buf == NULL || ctx->in == NULL)) {
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200
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201 if (ctx->busy) {
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202 if (ngx_http_sub_output(r, ctx) == NGX_ERROR) {
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203 return NGX_ERROR;
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204 }
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205 }
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206
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207 return ngx_http_next_body_filter(r, in);
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208 }
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209
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210 /* add the incoming chain to the chain ctx->in */
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211
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212 if (in) {
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454
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213 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) {
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296
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214 return NGX_ERROR;
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215 }
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216 }
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217
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218 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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219 "http sub filter \"%V\"", &r->uri);
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220
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221 while (ctx->in || ctx->buf) {
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222
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582
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223 if (ctx->buf == NULL) {
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296
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224 ctx->buf = ctx->in->buf;
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225 ctx->in = ctx->in->next;
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226 ctx->pos = ctx->buf->pos;
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227 }
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228
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229 if (ctx->state == sub_start_state) {
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230 ctx->copy_start = ctx->pos;
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231 ctx->copy_end = ctx->pos;
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232 }
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233
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234 b = NULL;
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235
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236 while (ctx->pos < ctx->buf->last) {
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237
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238 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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584
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239 "saved: \"%V\" state: %d", &ctx->saved, ctx->state);
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296
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240
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241 rc = ngx_http_sub_parse(r, ctx);
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242
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243 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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584
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244 "parse: %d, looked: \"%V\" %p-%p",
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245 rc, &ctx->looked, ctx->copy_start, ctx->copy_end);
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296
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246
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247 if (rc == NGX_ERROR) {
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248 return rc;
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249 }
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250
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251 if (ctx->copy_start != ctx->copy_end) {
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252
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253 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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584
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254 "saved: \"%V\"", &ctx->saved);
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296
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255
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584
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256 if (ctx->saved.len) {
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296
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257
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258 if (ctx->free) {
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259 cl = ctx->free;
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260 ctx->free = ctx->free->next;
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261 b = cl->buf;
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262 ngx_memzero(b, sizeof(ngx_buf_t));
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263
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264 } else {
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265 b = ngx_calloc_buf(r->pool);
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266 if (b == NULL) {
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267 return NGX_ERROR;
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268 }
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269
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270 cl = ngx_alloc_chain_link(r->pool);
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271 if (cl == NULL) {
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272 return NGX_ERROR;
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273 }
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274
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275 cl->buf = b;
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276 }
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277
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584
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278 b->pos = ngx_pnalloc(r->pool, ctx->saved.len);
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279 if (b->pos == NULL) {
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280 return NGX_ERROR;
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281 }
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282
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283 ngx_memcpy(b->pos, ctx->saved.data, ctx->saved.len);
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284 b->last = b->pos + ctx->saved.len;
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296
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285 b->memory = 1;
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286
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287 *ctx->last_out = cl;
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288 ctx->last_out = &cl->next;
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289
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584
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290 ctx->saved.len = 0;
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296
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291 }
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292
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293 if (ctx->free) {
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294 cl = ctx->free;
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295 ctx->free = ctx->free->next;
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296 b = cl->buf;
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297
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298 } else {
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299 b = ngx_alloc_buf(r->pool);
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300 if (b == NULL) {
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301 return NGX_ERROR;
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302 }
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303
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304 cl = ngx_alloc_chain_link(r->pool);
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305 if (cl == NULL) {
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306 return NGX_ERROR;
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307 }
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308
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309 cl->buf = b;
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310 }
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311
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312 ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t));
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313
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314 b->pos = ctx->copy_start;
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315 b->last = ctx->copy_end;
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316 b->shadow = NULL;
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317 b->last_buf = 0;
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318 b->recycled = 0;
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319
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320 if (b->in_file) {
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386
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321 b->file_last = b->file_pos + (b->last - ctx->buf->pos);
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322 b->file_pos += b->pos - ctx->buf->pos;
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296
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323 }
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324
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325 cl->next = NULL;
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326 *ctx->last_out = cl;
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327 ctx->last_out = &cl->next;
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328 }
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329
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330 if (ctx->state == sub_start_state) {
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331 ctx->copy_start = ctx->pos;
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332 ctx->copy_end = ctx->pos;
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333
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334 } else {
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335 ctx->copy_start = NULL;
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336 ctx->copy_end = NULL;
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337 }
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338
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339 if (rc == NGX_AGAIN) {
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340 continue;
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341 }
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342
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343
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344 /* rc == NGX_OK */
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345
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346 b = ngx_calloc_buf(r->pool);
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347 if (b == NULL) {
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348 return NGX_ERROR;
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349 }
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350
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351 cl = ngx_alloc_chain_link(r->pool);
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352 if (cl == NULL) {
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353 return NGX_ERROR;
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354 }
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355
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356 slcf = ngx_http_get_module_loc_conf(r, ngx_http_sub_filter_module);
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357
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358 if (ctx->sub.data == NULL) {
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359
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464
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360 if (ngx_http_complex_value(r, &slcf->value, &ctx->sub)
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361 != NGX_OK)
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296
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362 {
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363 return NGX_ERROR;
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364 }
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365 }
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366
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340
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367 if (ctx->sub.len) {
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368 b->memory = 1;
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369 b->pos = ctx->sub.data;
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370 b->last = ctx->sub.data + ctx->sub.len;
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371
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372 } else {
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373 b->sync = 1;
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374 }
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296
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375
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376 cl->buf = b;
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377 cl->next = NULL;
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378 *ctx->last_out = cl;
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379 ctx->last_out = &cl->next;
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380
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381 ctx->once = slcf->once;
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382
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383 continue;
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384 }
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385
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386 if (ctx->buf->last_buf || ngx_buf_in_memory(ctx->buf)) {
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387 if (b == NULL) {
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388 if (ctx->free) {
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389 cl = ctx->free;
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390 ctx->free = ctx->free->next;
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391 b = cl->buf;
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392 ngx_memzero(b, sizeof(ngx_buf_t));
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393
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394 } else {
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395 b = ngx_calloc_buf(r->pool);
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396 if (b == NULL) {
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397 return NGX_ERROR;
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398 }
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399
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400 cl = ngx_alloc_chain_link(r->pool);
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401 if (cl == NULL) {
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402 return NGX_ERROR;
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403 }
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404
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405 cl->buf = b;
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406 }
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407
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408 b->sync = 1;
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409
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410 cl->next = NULL;
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411 *ctx->last_out = cl;
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412 ctx->last_out = &cl->next;
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413 }
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414
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415 b->last_buf = ctx->buf->last_buf;
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416 b->shadow = ctx->buf;
|
|
|
417
|
|
|
418 b->recycled = ctx->buf->recycled;
|
|
|
419 }
|
|
|
420
|
|
|
421 ctx->buf = NULL;
|
|
|
422
|
|
584
|
423 ctx->saved.len = ctx->looked.len;
|
|
|
424 ngx_memcpy(ctx->saved.data, ctx->looked.data, ctx->looked.len);
|
|
296
|
425 }
|
|
|
426
|
|
|
427 if (ctx->out == NULL && ctx->busy == NULL) {
|
|
|
428 return NGX_OK;
|
|
|
429 }
|
|
|
430
|
|
|
431 return ngx_http_sub_output(r, ctx);
|
|
|
432 }
|
|
|
433
|
|
|
434
|
|
|
435 static ngx_int_t
|
|
|
436 ngx_http_sub_output(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx)
|
|
|
437 {
|
|
|
438 ngx_int_t rc;
|
|
|
439 ngx_buf_t *b;
|
|
|
440 ngx_chain_t *cl;
|
|
|
441
|
|
|
442 #if 1
|
|
|
443 b = NULL;
|
|
|
444 for (cl = ctx->out; cl; cl = cl->next) {
|
|
|
445 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
446 "sub out: %p %p", cl->buf, cl->buf->pos);
|
|
|
447 if (cl->buf == b) {
|
|
|
448 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
449 "the same buf was used in sub");
|
|
|
450 ngx_debug_point();
|
|
|
451 return NGX_ERROR;
|
|
|
452 }
|
|
|
453 b = cl->buf;
|
|
|
454 }
|
|
|
455 #endif
|
|
|
456
|
|
|
457 rc = ngx_http_next_body_filter(r, ctx->out);
|
|
|
458
|
|
|
459 if (ctx->busy == NULL) {
|
|
|
460 ctx->busy = ctx->out;
|
|
|
461
|
|
|
462 } else {
|
|
|
463 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ }
|
|
|
464 cl->next = ctx->out;
|
|
|
465 }
|
|
|
466
|
|
|
467 ctx->out = NULL;
|
|
|
468 ctx->last_out = &ctx->out;
|
|
|
469
|
|
|
470 while (ctx->busy) {
|
|
|
471
|
|
|
472 cl = ctx->busy;
|
|
|
473 b = cl->buf;
|
|
|
474
|
|
|
475 if (ngx_buf_size(b) != 0) {
|
|
|
476 break;
|
|
|
477 }
|
|
|
478
|
|
|
479 if (b->shadow) {
|
|
|
480 b->shadow->pos = b->shadow->last;
|
|
|
481 }
|
|
|
482
|
|
|
483 ctx->busy = cl->next;
|
|
|
484
|
|
|
485 if (ngx_buf_in_memory(b) || b->in_file) {
|
|
|
486 /* add data bufs only to the free buf chain */
|
|
|
487
|
|
|
488 cl->next = ctx->free;
|
|
|
489 ctx->free = cl;
|
|
|
490 }
|
|
|
491 }
|
|
|
492
|
|
|
493 if (ctx->in || ctx->buf) {
|
|
|
494 r->buffered |= NGX_HTTP_SUB_BUFFERED;
|
|
|
495
|
|
|
496 } else {
|
|
|
497 r->buffered &= ~NGX_HTTP_SUB_BUFFERED;
|
|
|
498 }
|
|
|
499
|
|
|
500 return rc;
|
|
|
501 }
|
|
|
502
|
|
|
503
|
|
|
504 static ngx_int_t
|
|
|
505 ngx_http_sub_parse(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx)
|
|
|
506 {
|
|
|
507 u_char *p, *last, *copy_end, ch, match;
|
|
|
508 size_t looked;
|
|
|
509 ngx_http_sub_state_e state;
|
|
|
510
|
|
|
511 if (ctx->once) {
|
|
|
512 ctx->copy_start = ctx->pos;
|
|
|
513 ctx->copy_end = ctx->buf->last;
|
|
|
514 ctx->pos = ctx->buf->last;
|
|
584
|
515 ctx->looked.len = 0;
|
|
296
|
516
|
|
|
517 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "once");
|
|
|
518
|
|
|
519 return NGX_AGAIN;
|
|
|
520 }
|
|
|
521
|
|
|
522 state = ctx->state;
|
|
584
|
523 looked = ctx->looked.len;
|
|
296
|
524 last = ctx->buf->last;
|
|
|
525 copy_end = ctx->copy_end;
|
|
|
526
|
|
|
527 for (p = ctx->pos; p < last; p++) {
|
|
|
528
|
|
|
529 ch = *p;
|
|
|
530 ch = ngx_tolower(ch);
|
|
|
531
|
|
|
532 if (state == sub_start_state) {
|
|
|
533
|
|
|
534 /* the tight loop */
|
|
|
535
|
|
|
536 match = ctx->match.data[0];
|
|
|
537
|
|
|
538 for ( ;; ) {
|
|
|
539 if (ch == match) {
|
|
|
540 copy_end = p;
|
|
584
|
541 ctx->looked.data[0] = *p;
|
|
296
|
542 looked = 1;
|
|
|
543 state = sub_match_state;
|
|
|
544
|
|
|
545 goto match_started;
|
|
|
546 }
|
|
|
547
|
|
|
548 if (++p == last) {
|
|
|
549 break;
|
|
|
550 }
|
|
|
551
|
|
|
552 ch = *p;
|
|
|
553 ch = ngx_tolower(ch);
|
|
|
554 }
|
|
|
555
|
|
340
|
556 ctx->state = state;
|
|
296
|
557 ctx->pos = p;
|
|
584
|
558 ctx->looked.len = looked;
|
|
296
|
559 ctx->copy_end = p;
|
|
|
560
|
|
|
561 if (ctx->copy_start == NULL) {
|
|
|
562 ctx->copy_start = ctx->buf->pos;
|
|
|
563 }
|
|
|
564
|
|
|
565 return NGX_AGAIN;
|
|
|
566
|
|
|
567 match_started:
|
|
|
568
|
|
|
569 continue;
|
|
|
570 }
|
|
|
571
|
|
|
572 /* state == sub_match_state */
|
|
|
573
|
|
|
574 if (ch == ctx->match.data[looked]) {
|
|
584
|
575 ctx->looked.data[looked] = *p;
|
|
296
|
576 looked++;
|
|
|
577
|
|
|
578 if (looked == ctx->match.len) {
|
|
340
|
579 if ((size_t) (p - ctx->pos) < looked) {
|
|
584
|
580 ctx->saved.len = 0;
|
|
340
|
581 }
|
|
|
582
|
|
296
|
583 ctx->state = sub_start_state;
|
|
|
584 ctx->pos = p + 1;
|
|
584
|
585 ctx->looked.len = 0;
|
|
296
|
586 ctx->copy_end = copy_end;
|
|
|
587
|
|
|
588 if (ctx->copy_start == NULL && copy_end) {
|
|
|
589 ctx->copy_start = ctx->buf->pos;
|
|
|
590 }
|
|
|
591
|
|
|
592 return NGX_OK;
|
|
|
593 }
|
|
|
594
|
|
|
595 } else if (ch == ctx->match.data[0]) {
|
|
|
596 copy_end = p;
|
|
584
|
597 ctx->looked.data[0] = *p;
|
|
296
|
598 looked = 1;
|
|
|
599
|
|
|
600 } else {
|
|
|
601 copy_end = p;
|
|
|
602 looked = 0;
|
|
|
603 state = sub_start_state;
|
|
|
604 }
|
|
|
605 }
|
|
|
606
|
|
|
607 ctx->state = state;
|
|
|
608 ctx->pos = p;
|
|
584
|
609 ctx->looked.len = looked;
|
|
296
|
610
|
|
|
611 ctx->copy_end = (state == sub_start_state) ? p : copy_end;
|
|
|
612
|
|
|
613 if (ctx->copy_start == NULL && ctx->copy_end) {
|
|
|
614 ctx->copy_start = ctx->buf->pos;
|
|
|
615 }
|
|
|
616
|
|
|
617 return NGX_AGAIN;
|
|
|
618 }
|
|
|
619
|
|
|
620
|
|
|
621 static char *
|
|
|
622 ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
623 {
|
|
|
624 ngx_http_sub_loc_conf_t *slcf = conf;
|
|
|
625
|
|
464
|
626 ngx_str_t *value;
|
|
|
627 ngx_http_compile_complex_value_t ccv;
|
|
296
|
628
|
|
|
629 if (slcf->match.len) {
|
|
|
630 return "is duplicate";
|
|
|
631 }
|
|
|
632
|
|
|
633 value = cf->args->elts;
|
|
|
634
|
|
392
|
635 ngx_strlow(value[1].data, value[1].data, value[1].len);
|
|
296
|
636
|
|
392
|
637 slcf->match = value[1];
|
|
296
|
638
|
|
464
|
639 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
296
|
640
|
|
464
|
641 ccv.cf = cf;
|
|
|
642 ccv.value = &value[2];
|
|
|
643 ccv.complex_value = &slcf->value;
|
|
296
|
644
|
|
464
|
645 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
296
|
646 return NGX_CONF_ERROR;
|
|
|
647 }
|
|
|
648
|
|
|
649 return NGX_CONF_OK;
|
|
|
650 }
|
|
|
651
|
|
|
652
|
|
|
653 static void *
|
|
|
654 ngx_http_sub_create_conf(ngx_conf_t *cf)
|
|
|
655 {
|
|
|
656 ngx_http_sub_loc_conf_t *slcf;
|
|
|
657
|
|
|
658 slcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_sub_loc_conf_t));
|
|
|
659 if (slcf == NULL) {
|
|
496
|
660 return NULL;
|
|
296
|
661 }
|
|
|
662
|
|
|
663 /*
|
|
|
664 * set by ngx_pcalloc():
|
|
|
665 *
|
|
394
|
666 * conf->match = { 0, NULL };
|
|
|
667 * conf->sub = { 0, NULL };
|
|
296
|
668 * conf->sub_lengths = NULL;
|
|
|
669 * conf->sub_values = NULL;
|
|
394
|
670 * conf->types = { NULL };
|
|
|
671 * conf->types_keys = NULL;
|
|
296
|
672 */
|
|
|
673
|
|
|
674 slcf->once = NGX_CONF_UNSET;
|
|
|
675
|
|
|
676 return slcf;
|
|
|
677 }
|
|
|
678
|
|
|
679
|
|
|
680 static char *
|
|
|
681 ngx_http_sub_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
682 {
|
|
|
683 ngx_http_sub_loc_conf_t *prev = parent;
|
|
|
684 ngx_http_sub_loc_conf_t *conf = child;
|
|
|
685
|
|
|
686 ngx_conf_merge_value(conf->once, prev->once, 1);
|
|
|
687 ngx_conf_merge_str_value(conf->match, prev->match, "");
|
|
|
688
|
|
464
|
689 if (conf->value.value.len == 0) {
|
|
|
690 conf->value = prev->value;
|
|
296
|
691 }
|
|
|
692
|
|
554
|
693 if (ngx_http_merge_types(cf, &conf->types_keys, &conf->types,
|
|
|
694 &prev->types_keys, &prev->types,
|
|
394
|
695 ngx_http_html_default_types)
|
|
|
696 != NGX_OK)
|
|
|
697 {
|
|
|
698 return NGX_CONF_ERROR;
|
|
296
|
699 }
|
|
|
700
|
|
|
701 return NGX_CONF_OK;
|
|
|
702 }
|
|
|
703
|
|
|
704
|
|
|
705 static ngx_int_t
|
|
|
706 ngx_http_sub_filter_init(ngx_conf_t *cf)
|
|
|
707 {
|
|
|
708 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
709 ngx_http_top_header_filter = ngx_http_sub_header_filter;
|
|
|
710
|
|
|
711 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
712 ngx_http_top_body_filter = ngx_http_sub_body_filter;
|
|
|
713
|
|
|
714 return NGX_OK;
|
|
|
715 }
|
