46
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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 #define NGX_HTTP_SSI_MAX_PARAMS 16
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12
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13 #define NGX_HTTP_SSI_COMMAND_LEN 31
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14 #define NGX_HTTP_SSI_PARAM_LEN 31
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15 #define NGX_HTTP_SSI_PARAMS_N 4
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16
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17 #define NGX_HTTP_SSI_ERROR 1
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18
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58
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19 #define NGX_HTTP_SSI_DATE_LEN 2048
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20
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46
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21
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22 typedef struct {
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23 ngx_flag_t enable;
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24 ngx_flag_t silent_errors;
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25 ngx_flag_t ignore_recycled_buffers;
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26
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27 size_t min_file_chunk;
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28 size_t value_len;
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29 } ngx_http_ssi_conf_t;
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30
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31
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32 typedef struct {
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33 ngx_buf_t *buf;
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34
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35 u_char *pos;
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36 u_char *copy_start;
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37 u_char *copy_end;
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38
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39 ngx_str_t command;
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40 ngx_array_t params;
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41 ngx_table_elt_t *param;
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42 ngx_table_elt_t params_array[NGX_HTTP_SSI_PARAMS_N];
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43
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44 ngx_chain_t *in;
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45 ngx_chain_t *out;
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46 ngx_chain_t **last_out;
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48
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47 ngx_chain_t *busy;
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48 ngx_chain_t *free;
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46
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49
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50 ngx_uint_t state;
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51 ngx_uint_t saved_state;
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52 size_t saved;
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53 size_t looked;
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54
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55 size_t value_len;
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58
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56
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57 ngx_uint_t output; /* unsigned output:1; */
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58
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59 ngx_str_t timefmt;
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46
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60 } ngx_http_ssi_ctx_t;
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61
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62
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63 typedef ngx_int_t (*ngx_http_ssi_command_pt) (ngx_http_request_t *r,
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64 ngx_http_ssi_ctx_t *ctx, ngx_str_t **);
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65
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66
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67 typedef struct {
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68 ngx_str_t name;
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69 ngx_uint_t index;
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70
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71 ngx_uint_t mandatory;
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72 } ngx_http_ssi_param_t;
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73
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74
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75 typedef struct {
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76 ngx_str_t name;
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77 ngx_http_ssi_command_pt handler;
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78 ngx_http_ssi_param_t *params;
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79
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80 unsigned conditional:1;
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81 unsigned flush:1;
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82 } ngx_http_ssi_command_t;
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83
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84
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85 typedef enum {
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86 ssi_start_state = 0,
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87 ssi_tag_state,
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88 ssi_comment0_state,
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89 ssi_comment1_state,
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90 ssi_sharp_state,
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91 ssi_precommand_state,
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92 ssi_command_state,
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93 ssi_preparam_state,
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94 ssi_param_state,
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95 ssi_preequal_state,
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96 ssi_prevalue_state,
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97 ssi_double_quoted_value_state,
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98 ssi_quoted_value_state,
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99 ssi_quoted_symbol_state,
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100 ssi_postparam_state,
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101 ssi_comment_end0_state,
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102 ssi_comment_end1_state,
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103 ssi_error_state,
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104 ssi_error_end0_state,
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105 ssi_error_end1_state
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106 } ngx_http_ssi_state_e;
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107
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108
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109 static ngx_int_t ngx_http_ssi_output(ngx_http_request_t *r,
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110 ngx_http_ssi_ctx_t *ctx);
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111 static ngx_int_t ngx_http_ssi_parse(ngx_http_request_t *r,
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112 ngx_http_ssi_ctx_t *ctx);
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113
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114 static ngx_int_t ngx_http_ssi_echo(ngx_http_request_t *r,
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115 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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58
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116 static ngx_int_t ngx_http_ssi_config(ngx_http_request_t *r,
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117 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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118 static ngx_int_t ngx_http_ssi_include(ngx_http_request_t *r,
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119 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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120 static ngx_int_t ngx_http_ssi_if(ngx_http_request_t *r,
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121 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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122 static ngx_int_t ngx_http_ssi_else(ngx_http_request_t *r,
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123 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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124 static ngx_int_t ngx_http_ssi_endif(ngx_http_request_t *r,
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125 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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126
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127 static ngx_http_variable_value_t *
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128 ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r, uintptr_t gmt);
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129
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130 static ngx_int_t ngx_http_ssi_add_variables(ngx_conf_t *cf);
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131 static void *ngx_http_ssi_create_conf(ngx_conf_t *cf);
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132 static char *ngx_http_ssi_merge_conf(ngx_conf_t *cf,
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133 void *parent, void *child);
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134 static ngx_int_t ngx_http_ssi_filter_init(ngx_cycle_t *cycle);
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135
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136
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137 static ngx_command_t ngx_http_ssi_filter_commands[] = {
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138
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139 { ngx_string("ssi"),
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140 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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141 ngx_conf_set_flag_slot,
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142 NGX_HTTP_LOC_CONF_OFFSET,
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143 offsetof(ngx_http_ssi_conf_t, enable),
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144 NULL },
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145
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146 { ngx_string("ssi_silent_errors"),
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147 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_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_ssi_conf_t, silent_errors),
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151 NULL },
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152
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153 { ngx_string("ssi_ignore_recycled_buffers"),
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154 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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155 ngx_conf_set_flag_slot,
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156 NGX_HTTP_LOC_CONF_OFFSET,
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157 offsetof(ngx_http_ssi_conf_t, ignore_recycled_buffers),
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158 NULL },
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159
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46
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160 { ngx_string("ssi_min_file_chunk"),
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161 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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162 ngx_conf_set_size_slot,
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163 NGX_HTTP_LOC_CONF_OFFSET,
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164 offsetof(ngx_http_ssi_conf_t, min_file_chunk),
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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
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172 static ngx_http_module_t ngx_http_ssi_filter_module_ctx = {
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173 ngx_http_ssi_add_variables, /* preconfiguration */
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174 NULL, /* postconfiguration */
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175
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176 NULL, /* create main configuration */
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177 NULL, /* init main configuration */
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178
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179 NULL, /* create server configuration */
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180 NULL, /* merge server configuration */
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181
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182 ngx_http_ssi_create_conf, /* create location configuration */
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183 ngx_http_ssi_merge_conf /* merge location configuration */
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184 };
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185
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186
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187 ngx_module_t ngx_http_ssi_filter_module = {
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58
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188 NGX_MODULE_V1,
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189 &ngx_http_ssi_filter_module_ctx, /* module context */
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190 ngx_http_ssi_filter_commands, /* module directives */
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191 NGX_HTTP_MODULE, /* module type */
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192 ngx_http_ssi_filter_init, /* init module */
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193 NULL /* init process */
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194 };
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195
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196
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197 static ngx_int_t (*ngx_http_next_header_filter) (ngx_http_request_t *r);
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198 static ngx_int_t (*ngx_http_next_body_filter) (ngx_http_request_t *r,
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199 ngx_chain_t *in);
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200
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201
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202 static u_char ngx_http_ssi_string[] = "<!--";
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203 static u_char ngx_http_ssi_error_string[] =
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204 "[an error occurred while processing the directive]";
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205
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206 static ngx_str_t ngx_http_ssi_none = ngx_string("(none)");
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207
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208
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58
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209 #define NGX_HTTP_SSI_ECHO_VAR 0
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210 #define NGX_HTTP_SSI_ECHO_DEFAULT 1
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211
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212 #define NGX_HTTP_SSI_CONFIG_TIMEFMT 0
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213
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214 #define NGX_HTTP_SSI_INCLUDE_VIRTUAL 0
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215 #define NGX_HTTP_SSI_INCLUDE_FILE 1
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216
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217 #define NGX_HTTP_SSI_IF_EXPR 0
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218
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219
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220 static ngx_http_ssi_param_t ngx_http_ssi_echo_params[] = {
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221 { ngx_string("var"), NGX_HTTP_SSI_ECHO_VAR, 1 },
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222 { ngx_string("default"), NGX_HTTP_SSI_ECHO_DEFAULT, 0 },
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223 { ngx_null_string, 0, 0 }
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224 };
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225
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226 static ngx_http_ssi_param_t ngx_http_ssi_include_params[] = {
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227 { ngx_string("virtual"), NGX_HTTP_SSI_INCLUDE_VIRTUAL, 0 },
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228 #if 0
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229 { ngx_string("file"), NGX_HTTP_SSI_INCLUDE_FILE, 0 },
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230 #endif
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231 { ngx_null_string, 0, 0 }
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232 };
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233
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234
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235 static ngx_http_ssi_param_t ngx_http_ssi_config_params[] = {
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236 { ngx_string("timefmt"), NGX_HTTP_SSI_CONFIG_TIMEFMT, 0 },
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237 { ngx_null_string, 0, 0 }
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238 };
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239
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240
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241 static ngx_http_ssi_param_t ngx_http_ssi_if_params[] = {
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242 { ngx_string("expr"), NGX_HTTP_SSI_IF_EXPR, 0 },
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243 { ngx_null_string, 0, 0 }
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244 };
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245
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246
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247 static ngx_http_ssi_param_t ngx_http_ssi_no_params[] = {
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248 { ngx_null_string, 0, 0 }
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249 };
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250
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251
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252 static ngx_http_ssi_command_t ngx_http_ssi_commands[] = {
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253 { ngx_string("echo"), ngx_http_ssi_echo, ngx_http_ssi_echo_params, 0, 0 },
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254 { ngx_string("config"), ngx_http_ssi_config,
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255 ngx_http_ssi_config_params, 0, 0 },
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256 { ngx_string("include"), ngx_http_ssi_include,
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257 ngx_http_ssi_include_params, 0, 1 },
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258
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259 { ngx_string("if"), ngx_http_ssi_if, ngx_http_ssi_if_params, 0, 0 },
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260 { ngx_string("else"), ngx_http_ssi_else, ngx_http_ssi_no_params, 1, 0 },
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261 { ngx_string("endif"), ngx_http_ssi_endif, ngx_http_ssi_no_params, 1, 0 },
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262
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263 { ngx_null_string, NULL, NULL, 0, 0 }
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46
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264 };
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265
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266
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267 static ngx_http_variable_t ngx_http_ssi_vars[] = {
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268
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269 { ngx_string("date_local"), ngx_http_ssi_date_gmt_local_variable, 0,
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270 NGX_HTTP_VAR_NOCACHABLE },
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271
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272 { ngx_string("date_gmt"), ngx_http_ssi_date_gmt_local_variable, 1,
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273 NGX_HTTP_VAR_NOCACHABLE },
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274
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275 { ngx_null_string, NULL, 0, 0 }
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276 };
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277
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278
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279
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280 static ngx_int_t
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281 ngx_http_ssi_header_filter(ngx_http_request_t *r)
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282 {
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283 ngx_http_ssi_ctx_t *ctx;
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284 ngx_http_ssi_conf_t *conf;
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285
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286 conf = ngx_http_get_module_loc_conf(r, ngx_http_ssi_filter_module);
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287
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288 if (!conf->enable) {
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289 return ngx_http_next_header_filter(r);
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290 }
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291
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292 /* TODO: "text/html" -> custom types */
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293
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58
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294 if (r->headers_out.content_type.len == 0
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295 || ngx_strncasecmp(r->headers_out.content_type.data, "text/html", 5)
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296 != 0)
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297 {
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298 return ngx_http_next_header_filter(r);
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299 }
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300
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301
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302 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_ssi_ctx_t));
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303 if (ctx == NULL) {
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46
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304 return NGX_ERROR;
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305 }
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306
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307 ngx_http_set_ctx(r, ctx, ngx_http_ssi_filter_module);
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308
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309
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310 ctx->value_len = conf->value_len;
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311 ctx->last_out = &ctx->out;
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312
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313 ctx->output = 1;
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314
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315 ctx->params.elts = ctx->params_array;
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316 ctx->params.size = sizeof(ngx_table_elt_t);
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317 ctx->params.nalloc = NGX_HTTP_SSI_PARAMS_N;
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318 ctx->params.pool = r->pool;
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319
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58
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320 ctx->timefmt.len = sizeof("%A, %d-%b-%Y %H:%M:%S %Z") - 1;
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321 ctx->timefmt.data = (u_char *) "%A, %d-%b-%Y %H:%M:%S %Z";
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322
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323 r->filter_need_in_memory = 1;
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324 r->filter_ssi_need_in_memory = 1;
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325
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58
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326 if (r->main == NULL) {
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327 r->headers_out.content_length_n = -1;
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328 if (r->headers_out.content_length) {
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329 r->headers_out.content_length->hash = 0;
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330 r->headers_out.content_length = NULL;
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331 }
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332
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333 r->headers_out.last_modified_time = -1;
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334 if (r->headers_out.last_modified) {
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335 r->headers_out.last_modified->hash = 0;
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336 r->headers_out.last_modified = NULL;
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337 }
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338 }
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339
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46
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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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343
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344 static ngx_int_t
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345 ngx_http_ssi_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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346 {
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347 ngx_int_t rc;
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348 ngx_uint_t i;
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349 ngx_buf_t *b;
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350 ngx_chain_t *cl;
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351 ngx_table_elt_t *param;
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352 ngx_http_ssi_ctx_t *ctx;
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353 ngx_http_ssi_conf_t *conf;
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354 ngx_http_ssi_param_t *prm;
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355 ngx_http_ssi_command_t *cmd;
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356 ngx_str_t *params[NGX_HTTP_SSI_MAX_PARAMS];
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357
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358 ctx = ngx_http_get_module_ctx(r, ngx_http_ssi_filter_module);
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359
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48
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360 if (ctx == NULL || (in == NULL && ctx->in == NULL && ctx->busy == NULL)) {
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361 return ngx_http_next_body_filter(r, in);
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362 }
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363
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364 /* add the incoming chain to the chain ctx->in */
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365
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366 if (in) {
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367 if (ngx_chain_add_copy(r->pool, &ctx->in, in) == NGX_ERROR) {
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368 return NGX_ERROR;
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369 }
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370 }
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371
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372 conf = ngx_http_get_module_loc_conf(r, ngx_http_ssi_filter_module);
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373
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58
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374 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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375 "http ssi filter \"%V\"", &r->uri);
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46
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376
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48
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377 while (ctx->in || ctx->buf) {
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46
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378
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48
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379 if (ctx->buf == NULL ){
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380 ctx->buf = ctx->in->buf;
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381 ctx->in = ctx->in->next;
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382 ctx->pos = ctx->buf->pos;
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383 }
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46
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384
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385 if (ctx->state == ssi_start_state) {
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386 ctx->copy_start = ctx->pos;
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387 ctx->copy_end = ctx->pos;
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388 }
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389
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48
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390 b = NULL;
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391
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46
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392 while (ctx->pos < ctx->buf->last) {
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393
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394 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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395 "saved: %d state: %d", ctx->saved, ctx->state);
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396
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397 rc = ngx_http_ssi_parse(r, ctx);
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398
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399 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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400 "parse: %d, looked: %d %p-%p",
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401 rc, ctx->looked, ctx->copy_start, ctx->copy_end);
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402
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403 if (rc == NGX_ERROR) {
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404 return rc;
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405 }
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406
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407 if (ctx->copy_start != ctx->copy_end) {
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408
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58
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409 if (ctx->output) {
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410
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411 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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412 "saved: %d", ctx->saved);
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413
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414 if (ctx->saved) {
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415
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416 if (ctx->free) {
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417 cl = ctx->free;
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418 ctx->free = ctx->free->next;
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419 b = cl->buf;
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420 ngx_memzero(b, sizeof(ngx_buf_t));
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46
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421
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58
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422 } else {
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423 b = ngx_calloc_buf(r->pool);
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424 if (b == NULL) {
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425 return NGX_ERROR;
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426 }
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427
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428 cl = ngx_alloc_chain_link(r->pool);
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429 if (cl == NULL) {
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430 return NGX_ERROR;
|
|
431 }
|
|
432
|
|
433 cl->buf = b;
|
|
434 }
|
|
435
|
|
436 b->memory = 1;
|
|
437 b->pos = ngx_http_ssi_string;
|
|
438 b->last = ngx_http_ssi_string + ctx->saved;
|
|
439
|
|
440 *ctx->last_out = cl;
|
|
441 ctx->last_out = &cl->next;
|
|
442
|
|
443 ctx->saved = 0;
|
|
444 }
|
48
|
445
|
|
446 if (ctx->free) {
|
|
447 cl = ctx->free;
|
|
448 ctx->free = ctx->free->next;
|
|
449 b = cl->buf;
|
|
450
|
|
451 } else {
|
58
|
452 b = ngx_alloc_buf(r->pool);
|
48
|
453 if (b == NULL) {
|
|
454 return NGX_ERROR;
|
|
455 }
|
|
456
|
|
457 cl = ngx_alloc_chain_link(r->pool);
|
|
458 if (cl == NULL) {
|
|
459 return NGX_ERROR;
|
|
460 }
|
|
461
|
|
462 cl->buf = b;
|
46
|
463 }
|
|
464
|
58
|
465 ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t));
|
|
466
|
|
467 b->last_buf = 0;
|
|
468 b->recycled = 0;
|
|
469 b->pos = ctx->copy_start;
|
|
470 b->last = ctx->copy_end;
|
46
|
471
|
58
|
472 if (b->in_file) {
|
|
473 if (conf->min_file_chunk < (size_t) (b->last - b->pos))
|
|
474 {
|
|
475 b->file_last = b->file_pos + (b->last - b->start);
|
|
476 b->file_pos += b->pos - b->start;
|
|
477
|
|
478 } else {
|
|
479 b->in_file = 0;
|
|
480 }
|
|
481 }
|
|
482
|
|
483 cl->next = NULL;
|
46
|
484 *ctx->last_out = cl;
|
|
485 ctx->last_out = &cl->next;
|
|
486
|
58
|
487 } else {
|
46
|
488 ctx->saved = 0;
|
|
489 }
|
|
490 }
|
|
491
|
|
492 if (ctx->state == ssi_start_state) {
|
|
493 ctx->copy_start = ctx->pos;
|
|
494 ctx->copy_end = ctx->pos;
|
|
495
|
|
496 } else {
|
|
497 ctx->copy_start = NULL;
|
|
498 ctx->copy_end = NULL;
|
|
499 }
|
|
500
|
|
501 if (rc == NGX_AGAIN) {
|
|
502 continue;
|
|
503 }
|
|
504
|
|
505
|
|
506 if (rc == NGX_OK) {
|
|
507
|
|
508 for (cmd = ngx_http_ssi_commands; cmd->handler; cmd++) {
|
|
509 if (cmd->name.len == 0) {
|
|
510 cmd = (ngx_http_ssi_command_t *) cmd->handler;
|
|
511 }
|
|
512
|
|
513 if (cmd->name.len != ctx->command.len
|
|
514 || ngx_strncmp(cmd->name.data, ctx->command.data,
|
|
515 ctx->command.len) != 0)
|
|
516 {
|
|
517 continue;
|
|
518 }
|
|
519
|
|
520 break;
|
|
521 }
|
|
522
|
58
|
523 if (cmd->name.len == 0 && ctx->output) {
|
46
|
524 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
525 "invalid SSI command: \"%V\"", &ctx->command);
|
|
526 goto ssi_error;
|
|
527 }
|
|
528
|
58
|
529 if (!ctx->output && !cmd->conditional) {
|
|
530 continue;
|
|
531 }
|
|
532
|
46
|
533 ngx_memzero(params,
|
|
534 NGX_HTTP_SSI_MAX_PARAMS * sizeof(ngx_str_t *));
|
|
535
|
|
536 param = ctx->params.elts;
|
|
537
|
|
538
|
|
539 for (i = 0; i < ctx->params.nelts; i++) {
|
|
540
|
|
541 for (prm = cmd->params; prm->name.len; prm++) {
|
|
542
|
|
543 if (param[i].key.len != prm->name.len
|
|
544 || ngx_strncmp(param[i].key.data, prm->name.data,
|
|
545 prm->name.len) != 0)
|
|
546 {
|
|
547 continue;
|
|
548 }
|
|
549
|
|
550 if (params[prm->index]) {
|
|
551 ngx_log_error(NGX_LOG_ERR,
|
|
552 r->connection->log, 0,
|
|
553 "duplicate \"%V\" parameter "
|
|
554 "in \"%V\" SSI command",
|
|
555 ¶m[i].key, &ctx->command);
|
|
556
|
|
557 goto ssi_error;
|
|
558 }
|
|
559
|
|
560 params[prm->index] = ¶m[i].value;
|
|
561
|
|
562 break;
|
|
563 }
|
|
564
|
|
565 if (prm->name.len == 0) {
|
|
566 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
567 "invalid parameter name: \"%V\" "
|
|
568 "in \"%V\" SSI command",
|
|
569 ¶m[i].key, &ctx->command);
|
|
570
|
|
571 goto ssi_error;
|
|
572 }
|
|
573 }
|
|
574
|
|
575 for (prm = cmd->params; prm->name.len; prm++) {
|
|
576 if (prm->mandatory && params[prm->index] == 0) {
|
|
577 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
578 "mandatory \"%V\" parameter is absent "
|
|
579 "in \"%V\" SSI command",
|
|
580 &prm->name, &ctx->command);
|
|
581
|
|
582 goto ssi_error;
|
|
583 }
|
|
584 }
|
|
585
|
58
|
586 if (cmd->flush && ctx->out) {
|
|
587 rc = ngx_http_ssi_output(r, ctx);
|
|
588
|
|
589 if (rc == NGX_ERROR) {
|
|
590 return NGX_ERROR;
|
|
591 }
|
|
592 }
|
|
593
|
46
|
594 if (cmd->handler(r, ctx, params) == NGX_OK) {
|
|
595 continue;
|
|
596 }
|
|
597 }
|
|
598
|
|
599
|
|
600 /* rc == NGX_HTTP_SSI_ERROR */
|
|
601
|
48
|
602 ssi_error:
|
46
|
603
|
|
604 if (conf->silent_errors) {
|
|
605 continue;
|
|
606 }
|
|
607
|
48
|
608 if (ctx->free) {
|
|
609 cl = ctx->free;
|
|
610 ctx->free = ctx->free->next;
|
|
611 b = cl->buf;
|
|
612 ngx_memzero(b, sizeof(ngx_buf_t));
|
|
613
|
|
614 } else {
|
|
615 b = ngx_calloc_buf(r->pool);
|
|
616 if (b == NULL) {
|
|
617 return NGX_ERROR;
|
|
618 }
|
|
619
|
|
620 cl = ngx_alloc_chain_link(r->pool);
|
|
621 if (cl == NULL) {
|
|
622 return NGX_ERROR;
|
|
623 }
|
|
624
|
|
625 cl->buf = b;
|
46
|
626 }
|
|
627
|
|
628 b->memory = 1;
|
|
629 b->pos = ngx_http_ssi_error_string;
|
|
630 b->last = ngx_http_ssi_error_string
|
|
631 + sizeof(ngx_http_ssi_error_string) - 1;
|
|
632
|
|
633 cl->next = NULL;
|
|
634 *ctx->last_out = cl;
|
|
635 ctx->last_out = &cl->next;
|
|
636
|
|
637 continue;
|
|
638 }
|
|
639
|
58
|
640 if (ctx->buf->last_buf || ctx->buf->recycled) {
|
|
641
|
48
|
642 if (b == NULL) {
|
|
643 if (ctx->free) {
|
|
644 cl = ctx->free;
|
|
645 ctx->free = ctx->free->next;
|
|
646 b = cl->buf;
|
|
647 ngx_memzero(b, sizeof(ngx_buf_t));
|
|
648
|
|
649 } else {
|
|
650 b = ngx_calloc_buf(r->pool);
|
|
651 if (b == NULL) {
|
|
652 return NGX_ERROR;
|
|
653 }
|
46
|
654
|
48
|
655 cl = ngx_alloc_chain_link(r->pool);
|
|
656 if (cl == NULL) {
|
|
657 return NGX_ERROR;
|
|
658 }
|
|
659
|
|
660 cl->buf = b;
|
|
661 }
|
|
662
|
58
|
663 b->sync = 1;
|
|
664
|
48
|
665 cl->next = NULL;
|
|
666 *ctx->last_out = cl;
|
|
667 ctx->last_out = &cl->next;
|
|
668 }
|
|
669
|
|
670 b->last_buf = ctx->buf->last_buf;
|
|
671 b->shadow = ctx->buf;
|
58
|
672
|
|
673 if (conf->ignore_recycled_buffers == 0) {
|
|
674 b->recycled = ctx->buf->recycled;
|
|
675 }
|
46
|
676 }
|
|
677
|
48
|
678 ctx->buf = NULL;
|
|
679
|
46
|
680 ctx->saved = ctx->looked;
|
|
681 }
|
|
682
|
48
|
683 if (ctx->out == NULL && ctx->busy == NULL) {
|
46
|
684 return NGX_OK;
|
|
685 }
|
|
686
|
58
|
687 return ngx_http_ssi_output(r, ctx);
|
|
688 }
|
|
689
|
|
690
|
|
691 static ngx_int_t
|
|
692 ngx_http_ssi_output(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx)
|
|
693 {
|
|
694 ngx_int_t rc;
|
|
695 ngx_buf_t *b;
|
|
696 ngx_chain_t *cl;
|
|
697
|
46
|
698 rc = ngx_http_next_body_filter(r, ctx->out);
|
|
699
|
48
|
700 if (ctx->busy == NULL) {
|
|
701 ctx->busy = ctx->out;
|
|
702
|
|
703 } else {
|
|
704 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ }
|
|
705 cl->next = ctx->out;
|
|
706 }
|
|
707
|
46
|
708 ctx->out = NULL;
|
|
709 ctx->last_out = &ctx->out;
|
|
710
|
48
|
711 while (ctx->busy) {
|
|
712
|
|
713 b = ctx->busy->buf;
|
|
714
|
|
715 if (ngx_buf_size(b) != 0) {
|
|
716 break;
|
|
717 }
|
|
718
|
|
719 #if (NGX_HAVE_WRITE_ZEROCOPY)
|
|
720 if (b->zerocopy_busy) {
|
|
721 break;
|
|
722 }
|
|
723 #endif
|
|
724
|
|
725 if (b->shadow) {
|
|
726 b->shadow->pos = b->shadow->last;
|
|
727 }
|
|
728
|
|
729 cl = ctx->busy;
|
|
730 ctx->busy = cl->next;
|
|
731 cl->next = ctx->free;
|
|
732 ctx->free = cl;
|
|
733 }
|
|
734
|
46
|
735 return rc;
|
|
736 }
|
|
737
|
|
738
|
|
739 static ngx_int_t
|
|
740 ngx_http_ssi_parse(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx)
|
|
741 {
|
|
742 u_char *p, *last, *copy_end, ch;
|
|
743 size_t looked;
|
|
744 ngx_http_ssi_state_e state;
|
|
745
|
|
746 state = ctx->state;
|
|
747 looked = ctx->looked;
|
|
748 last = ctx->buf->last;
|
|
749 copy_end = ctx->copy_end;
|
|
750
|
|
751 for (p = ctx->pos; p < last; p++) {
|
|
752
|
|
753 ch = *p;
|
|
754
|
|
755 if (state == ssi_start_state) {
|
|
756
|
|
757 /* the tight loop */
|
|
758
|
48
|
759 for ( ;; ) {
|
|
760 if (ch == '<') {
|
|
761 copy_end = p;
|
|
762 looked = 1;
|
|
763 state = ssi_tag_state;
|
|
764
|
|
765 goto tag_started;
|
46
|
766 }
|
|
767
|
48
|
768 if (++p == last) {
|
|
769 break;
|
|
770 }
|
46
|
771
|
48
|
772 ch = *p;
|
46
|
773 }
|
|
774
|
|
775 ctx->pos = p;
|
|
776 ctx->looked = looked;
|
|
777 ctx->copy_end = p;
|
|
778
|
|
779 if (ctx->copy_start == NULL) {
|
|
780 ctx->copy_start = ctx->buf->pos;
|
|
781 }
|
|
782
|
|
783 return NGX_AGAIN;
|
|
784
|
48
|
785 tag_started:
|
|
786
|
46
|
787 continue;
|
|
788 }
|
|
789
|
|
790 switch (state) {
|
|
791
|
|
792 case ssi_start_state:
|
|
793 break;
|
|
794
|
|
795 case ssi_tag_state:
|
|
796 switch (ch) {
|
|
797 case '!':
|
|
798 looked = 2;
|
|
799 state = ssi_comment0_state;
|
|
800 break;
|
|
801
|
|
802 case '<':
|
|
803 copy_end = p;
|
|
804 break;
|
|
805
|
|
806 default:
|
|
807 copy_end = p;
|
|
808 looked = 0;
|
|
809 state = ssi_start_state;
|
|
810 break;
|
|
811 }
|
|
812
|
|
813 break;
|
|
814
|
|
815 case ssi_comment0_state:
|
|
816 switch (ch) {
|
|
817 case '-':
|
|
818 looked = 3;
|
|
819 state = ssi_comment1_state;
|
|
820 break;
|
|
821
|
|
822 case '<':
|
|
823 copy_end = p;
|
|
824 looked = 1;
|
|
825 state = ssi_tag_state;
|
|
826 break;
|
|
827
|
|
828 default:
|
|
829 copy_end = p;
|
|
830 looked = 0;
|
|
831 state = ssi_start_state;
|
|
832 break;
|
|
833 }
|
|
834
|
|
835 break;
|
|
836
|
|
837 case ssi_comment1_state:
|
|
838 switch (ch) {
|
|
839 case '-':
|
|
840 looked = 4;
|
|
841 state = ssi_sharp_state;
|
|
842 break;
|
|
843
|
|
844 case '<':
|
|
845 copy_end = p;
|
|
846 looked = 1;
|
|
847 state = ssi_tag_state;
|
|
848 break;
|
|
849
|
|
850 default:
|
|
851 copy_end = p;
|
|
852 looked = 0;
|
|
853 state = ssi_start_state;
|
|
854 break;
|
|
855 }
|
|
856
|
|
857 break;
|
|
858
|
|
859 case ssi_sharp_state:
|
|
860 switch (ch) {
|
|
861 case '#':
|
|
862 if (ctx->copy_start) {
|
|
863 ctx->saved = 0;
|
|
864 }
|
|
865 looked = 0;
|
|
866 state = ssi_precommand_state;
|
|
867 break;
|
|
868
|
|
869 case '<':
|
|
870 copy_end = p;
|
|
871 looked = 1;
|
|
872 state = ssi_tag_state;
|
|
873 break;
|
|
874
|
|
875 default:
|
|
876 copy_end = p;
|
|
877 looked = 0;
|
|
878 state = ssi_start_state;
|
|
879 break;
|
|
880 }
|
|
881
|
|
882 break;
|
|
883
|
|
884 case ssi_precommand_state:
|
|
885 switch (ch) {
|
|
886 case ' ':
|
|
887 case CR:
|
|
888 case LF:
|
|
889 case '\t':
|
|
890 break;
|
|
891
|
|
892 default:
|
|
893 ctx->command.len = 1;
|
|
894 ctx->command.data = ngx_palloc(r->pool,
|
|
895 NGX_HTTP_SSI_COMMAND_LEN + 1);
|
|
896 if (ctx->command.data == NULL) {
|
|
897 return NGX_ERROR;
|
|
898 }
|
|
899
|
|
900 ctx->command.data[0] = ch;
|
|
901 ctx->params.nelts = 0;
|
|
902 state = ssi_command_state;
|
|
903 break;
|
|
904 }
|
|
905
|
|
906 break;
|
|
907
|
|
908 case ssi_command_state:
|
|
909 switch (ch) {
|
|
910 case ' ':
|
|
911 case CR:
|
|
912 case LF:
|
|
913 case '\t':
|
|
914 state = ssi_preparam_state;
|
|
915 break;
|
|
916
|
|
917 case '-':
|
|
918 state = ssi_comment_end0_state;
|
|
919 break;
|
|
920
|
|
921 default:
|
|
922 ctx->command.data[ctx->command.len++] = ch;
|
|
923
|
|
924 if (ctx->command.len == NGX_HTTP_SSI_COMMAND_LEN) {
|
|
925 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
926 "the \"%V\" SSI command is too long",
|
|
927 &ctx->command);
|
|
928
|
|
929 state = ssi_error_state;
|
|
930 break;
|
|
931 }
|
|
932 }
|
|
933
|
|
934 break;
|
|
935
|
|
936 case ssi_preparam_state:
|
|
937 switch (ch) {
|
|
938 case ' ':
|
|
939 case CR:
|
|
940 case LF:
|
|
941 case '\t':
|
|
942 break;
|
|
943
|
|
944 case '-':
|
|
945 state = ssi_comment_end0_state;
|
|
946 break;
|
|
947
|
|
948 default:
|
48
|
949 ctx->param = ngx_array_push(&ctx->params);
|
|
950 if (ctx->param == NULL) {
|
46
|
951 return NGX_ERROR;
|
|
952 }
|
|
953
|
|
954 ctx->param->key.len = 1;
|
|
955 ctx->param->key.data = ngx_palloc(r->pool,
|
|
956 NGX_HTTP_SSI_PARAM_LEN + 1);
|
|
957 if (ctx->param->key.data == NULL) {
|
|
958 return NGX_ERROR;
|
|
959 }
|
|
960
|
|
961 ctx->param->key.data[0] = ch;
|
|
962
|
|
963 ctx->param->value.len = 0;
|
|
964 ctx->param->value.data = ngx_palloc(r->pool,
|
|
965 ctx->value_len + 1);
|
|
966 if (ctx->param->value.data == NULL) {
|
|
967 return NGX_ERROR;
|
|
968 }
|
|
969
|
|
970 state = ssi_param_state;
|
|
971 break;
|
|
972 }
|
|
973
|
|
974 break;
|
|
975
|
|
976 case ssi_param_state:
|
|
977 switch (ch) {
|
|
978 case ' ':
|
|
979 case CR:
|
|
980 case LF:
|
|
981 case '\t':
|
|
982 state = ssi_preequal_state;
|
|
983 break;
|
|
984
|
|
985 case '=':
|
|
986 state = ssi_prevalue_state;
|
|
987 break;
|
|
988
|
|
989 case '-':
|
|
990 state = ssi_error_end0_state;
|
|
991
|
|
992 ctx->param->key.data[ctx->param->key.len++] = ch;
|
|
993 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
994 "invalid \"%V\" parameter in \"%V\" SSI command",
|
|
995 &ctx->param->key, &ctx->command);
|
|
996 break;
|
|
997
|
|
998 default:
|
|
999 ctx->param->key.data[ctx->param->key.len++] = ch;
|
|
1000
|
|
1001 if (ctx->param->key.len == NGX_HTTP_SSI_PARAM_LEN) {
|
|
1002 state = ssi_error_state;
|
|
1003 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1004 "too long \"%V\" parameter in "
|
|
1005 "\"%V\" SSI command",
|
|
1006 &ctx->param->key, &ctx->command);
|
|
1007 break;
|
|
1008 }
|
|
1009 }
|
|
1010
|
|
1011 break;
|
|
1012
|
|
1013 case ssi_preequal_state:
|
|
1014 switch (ch) {
|
|
1015 case ' ':
|
|
1016 case CR:
|
|
1017 case LF:
|
|
1018 case '\t':
|
|
1019 break;
|
|
1020
|
|
1021 case '=':
|
|
1022 state = ssi_prevalue_state;
|
|
1023 break;
|
|
1024
|
|
1025 default:
|
|
1026 if (ch == '-') {
|
|
1027 state = ssi_error_end0_state;
|
|
1028 } else {
|
|
1029 state = ssi_error_state;
|
|
1030 }
|
|
1031
|
|
1032 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1033 "unexpected \"%c\" symbol after \"%V\" "
|
|
1034 "parameter in \"%V\" SSI command",
|
|
1035 ch, &ctx->param->key, &ctx->command);
|
|
1036 break;
|
|
1037 }
|
|
1038
|
|
1039 break;
|
|
1040
|
|
1041 case ssi_prevalue_state:
|
|
1042 switch (ch) {
|
|
1043 case ' ':
|
|
1044 case CR:
|
|
1045 case LF:
|
|
1046 case '\t':
|
|
1047 break;
|
|
1048
|
|
1049 case '"':
|
|
1050 state = ssi_double_quoted_value_state;
|
|
1051 break;
|
|
1052
|
|
1053 case '\'':
|
|
1054 state = ssi_quoted_value_state;
|
|
1055 break;
|
|
1056
|
|
1057 default:
|
|
1058 if (ch == '-') {
|
|
1059 state = ssi_error_end0_state;
|
|
1060 } else {
|
|
1061 state = ssi_error_state;
|
|
1062 }
|
|
1063
|
|
1064 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1065 "unexpected \"%c\" symbol before value of "
|
|
1066 "\"%V\" parameter in \"%V\" SSI command",
|
|
1067 ch, &ctx->param->key, &ctx->command);
|
|
1068 break;
|
|
1069 }
|
|
1070
|
|
1071 break;
|
|
1072
|
|
1073 case ssi_double_quoted_value_state:
|
|
1074 switch (ch) {
|
|
1075 case '\\':
|
|
1076 ctx->saved_state = ssi_double_quoted_value_state;
|
|
1077 state = ssi_quoted_symbol_state;
|
|
1078 break;
|
|
1079
|
|
1080 case '"':
|
|
1081 state = ssi_postparam_state;
|
|
1082 break;
|
|
1083
|
|
1084 default:
|
|
1085 ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
1086
|
|
1087 if (ctx->param->value.len == ctx->value_len) {
|
|
1088 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1089 "too long \"%V\" value of \"%V\" parameter "
|
|
1090 "in \"%V\" SSI command",
|
|
1091 &ctx->param->value, &ctx->param->key,
|
|
1092 &ctx->command);
|
|
1093 state = ssi_error_state;
|
|
1094 break;
|
|
1095 }
|
|
1096 }
|
|
1097
|
|
1098 break;
|
|
1099
|
|
1100 case ssi_quoted_value_state:
|
|
1101 switch (ch) {
|
|
1102 case '\\':
|
|
1103 ctx->saved_state = ssi_quoted_value_state;
|
|
1104 state = ssi_quoted_symbol_state;
|
|
1105 break;
|
|
1106
|
|
1107 case '\'':
|
|
1108 state = ssi_postparam_state;
|
|
1109 break;
|
|
1110
|
|
1111 default:
|
|
1112 ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
1113
|
|
1114 if (ctx->param->value.len == ctx->value_len) {
|
|
1115 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1116 "too long \"%V\" value of \"%V\" parameter "
|
|
1117 "in \"%V\" SSI command",
|
|
1118 &ctx->param->value, &ctx->param->key,
|
|
1119 &ctx->command);
|
|
1120 state = ssi_error_state;
|
|
1121 break;
|
|
1122 }
|
|
1123 }
|
|
1124
|
|
1125 break;
|
|
1126
|
|
1127 case ssi_quoted_symbol_state:
|
|
1128 ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
1129
|
|
1130 if (ctx->param->value.len == ctx->value_len) {
|
|
1131 if (ctx->param->value.len == ctx->value_len) {
|
|
1132 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1133 "too long \"%V\" value of \"%V\" parameter "
|
|
1134 "in \"%V\" SSI command",
|
|
1135 &ctx->param->value, &ctx->param->key,
|
|
1136 &ctx->command);
|
|
1137 state = ssi_error_state;
|
|
1138 break;
|
|
1139 }
|
|
1140 }
|
|
1141
|
|
1142 state = ctx->saved_state;
|
|
1143 break;
|
|
1144
|
|
1145 case ssi_postparam_state:
|
|
1146 switch (ch) {
|
|
1147 case ' ':
|
|
1148 case CR:
|
|
1149 case LF:
|
|
1150 case '\t':
|
|
1151 state = ssi_preparam_state;
|
|
1152 break;
|
|
1153
|
|
1154 case '-':
|
|
1155 state = ssi_comment_end0_state;
|
|
1156 break;
|
|
1157
|
|
1158 default:
|
|
1159 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1160 "unexpected \"%c\" symbol after \"%V\" value "
|
|
1161 "of \"%V\" parameter in \"%V\" SSI command",
|
|
1162 ch, &ctx->param->value, &ctx->param->key,
|
|
1163 &ctx->command);
|
|
1164 state = ssi_error_state;
|
|
1165 break;
|
|
1166 }
|
|
1167
|
|
1168 break;
|
|
1169
|
|
1170 case ssi_comment_end0_state:
|
|
1171 switch (ch) {
|
|
1172 case '-':
|
|
1173 state = ssi_comment_end1_state;
|
|
1174 break;
|
|
1175
|
|
1176 default:
|
|
1177 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1178 "unexpected \"%c\" symbol in \"%V\" SSI command",
|
|
1179 ch, &ctx->command);
|
|
1180 state = ssi_error_state;
|
|
1181 break;
|
|
1182 }
|
|
1183
|
|
1184 break;
|
|
1185
|
|
1186 case ssi_comment_end1_state:
|
|
1187 switch (ch) {
|
|
1188 case '>':
|
|
1189 ctx->state = ssi_start_state;
|
|
1190 ctx->pos = p + 1;
|
|
1191 ctx->looked = looked;
|
|
1192 ctx->copy_end = copy_end;
|
|
1193
|
|
1194 if (ctx->copy_start == NULL && copy_end) {
|
|
1195 ctx->copy_start = ctx->buf->pos;
|
|
1196 }
|
|
1197
|
|
1198 return NGX_OK;
|
|
1199
|
|
1200 default:
|
|
1201 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1202 "unexpected \"%c\" symbol in \"%V\" SSI command",
|
|
1203 ch, &ctx->command);
|
|
1204 state = ssi_error_state;
|
|
1205 break;
|
|
1206 }
|
|
1207
|
|
1208 break;
|
|
1209
|
|
1210 case ssi_error_state:
|
|
1211 switch (ch) {
|
|
1212 case '-':
|
|
1213 state = ssi_error_end0_state;
|
|
1214 break;
|
|
1215
|
|
1216 default:
|
|
1217 break;
|
|
1218 }
|
|
1219
|
|
1220 break;
|
|
1221
|
|
1222 case ssi_error_end0_state:
|
|
1223 switch (ch) {
|
|
1224 case '-':
|
|
1225 state = ssi_error_end1_state;
|
|
1226 break;
|
|
1227
|
|
1228 default:
|
|
1229 state = ssi_error_state;
|
|
1230 break;
|
|
1231 }
|
|
1232
|
|
1233 break;
|
|
1234
|
|
1235 case ssi_error_end1_state:
|
|
1236 switch (ch) {
|
|
1237 case '>':
|
|
1238 ctx->state = ssi_start_state;
|
|
1239 ctx->pos = p + 1;
|
|
1240 ctx->looked = looked;
|
|
1241 ctx->copy_end = copy_end;
|
|
1242
|
|
1243 if (ctx->copy_start == NULL && copy_end) {
|
|
1244 ctx->copy_start = ctx->buf->pos;
|
|
1245 }
|
|
1246
|
|
1247 return NGX_HTTP_SSI_ERROR;
|
|
1248
|
|
1249 default:
|
|
1250 state = ssi_error_state;
|
|
1251 break;
|
|
1252 }
|
|
1253
|
|
1254 break;
|
|
1255 }
|
|
1256 }
|
|
1257
|
|
1258 ctx->state = state;
|
|
1259 ctx->pos = p;
|
|
1260 ctx->looked = looked;
|
|
1261
|
|
1262 ctx->copy_end = (state == ssi_start_state) ? p : copy_end;
|
|
1263
|
|
1264 if (ctx->copy_start == NULL && ctx->copy_end) {
|
|
1265 ctx->copy_start = ctx->buf->pos;
|
|
1266 }
|
|
1267
|
|
1268 return NGX_AGAIN;
|
|
1269 }
|
|
1270
|
|
1271
|
|
1272 static ngx_int_t
|
|
1273 ngx_http_ssi_echo(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
1274 ngx_str_t **params)
|
|
1275 {
|
50
|
1276 ngx_uint_t i;
|
48
|
1277 ngx_buf_t *b;
|
|
1278 ngx_str_t *var, *value;
|
|
1279 ngx_chain_t *cl;
|
50
|
1280 ngx_http_variable_value_t *vv;
|
46
|
1281
|
|
1282 var = params[NGX_HTTP_SSI_ECHO_VAR];
|
|
1283
|
50
|
1284 for (i = 0; i < var->len; i++) {
|
58
|
1285 var->data[i] = ngx_tolower(var->data[i]);
|
50
|
1286 }
|
46
|
1287
|
50
|
1288 vv = ngx_http_get_variable(r, var);
|
|
1289
|
|
1290 if (vv == NULL) {
|
46
|
1291 return NGX_HTTP_SSI_ERROR;
|
|
1292 }
|
|
1293
|
58
|
1294 if (vv == NGX_HTTP_VAR_NOT_FOUND) {
|
48
|
1295 value = params[NGX_HTTP_SSI_ECHO_DEFAULT];
|
|
1296
|
|
1297 if (value == NULL) {
|
|
1298 value = &ngx_http_ssi_none;
|
|
1299
|
|
1300 } else if (value->len == 0) {
|
|
1301 return NGX_OK;
|
|
1302 }
|
|
1303
|
|
1304 } else {
|
50
|
1305 value = &vv->text;
|
48
|
1306
|
|
1307 if (value->len == 0) {
|
|
1308 return NGX_OK;
|
|
1309 }
|
|
1310 }
|
|
1311
|
|
1312 b = ngx_calloc_buf(r->pool);
|
|
1313 if (b == NULL) {
|
|
1314 return NGX_HTTP_SSI_ERROR;
|
|
1315 }
|
|
1316
|
|
1317 cl = ngx_alloc_chain_link(r->pool);
|
|
1318 if (cl == NULL) {
|
46
|
1319 return NGX_HTTP_SSI_ERROR;
|
|
1320 }
|
|
1321
|
|
1322 b->memory = 1;
|
|
1323 b->pos = value->data;
|
|
1324 b->last = value->data + value->len;
|
|
1325
|
|
1326 cl->buf = b;
|
|
1327 cl->next = NULL;
|
|
1328 *ctx->last_out = cl;
|
|
1329 ctx->last_out = &cl->next;
|
|
1330
|
|
1331 return NGX_OK;
|
|
1332 }
|
|
1333
|
|
1334
|
58
|
1335 static ngx_int_t
|
|
1336 ngx_http_ssi_config(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
1337 ngx_str_t **params)
|
|
1338 {
|
|
1339 ngx_str_t *value;
|
|
1340
|
|
1341 value = params[NGX_HTTP_SSI_CONFIG_TIMEFMT];
|
|
1342
|
|
1343 if (value) {
|
|
1344 ctx->timefmt = *value;
|
|
1345 }
|
|
1346
|
|
1347 return NGX_OK;
|
|
1348 }
|
|
1349
|
|
1350
|
|
1351 static ngx_int_t
|
|
1352 ngx_http_ssi_include(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
1353 ngx_str_t **params)
|
|
1354 {
|
|
1355 u_char ch, *p, **value;
|
|
1356 size_t *size, len;
|
|
1357 ngx_uint_t i, j, n, bracket;
|
|
1358 ngx_str_t uri, args, name;
|
|
1359 ngx_array_t lengths, values;
|
|
1360 ngx_http_variable_value_t *vv;
|
|
1361
|
|
1362 /* TODO: file, virtual vs file */
|
|
1363
|
|
1364 uri = *params[NGX_HTTP_SSI_INCLUDE_VIRTUAL];
|
|
1365 args.len = 0;
|
|
1366 args.data = NULL;
|
|
1367
|
|
1368 n = ngx_http_script_variables_count(&uri);
|
|
1369
|
|
1370 if (n > 0) {
|
|
1371
|
|
1372 if (ngx_array_init(&lengths, r->pool, 8, sizeof(size_t *)) != NGX_OK) {
|
|
1373 return NGX_HTTP_SSI_ERROR;
|
|
1374 }
|
|
1375
|
|
1376 if (ngx_array_init(&values, r->pool, 8, sizeof(u_char *)) != NGX_OK) {
|
|
1377 return NGX_HTTP_SSI_ERROR;
|
|
1378 }
|
|
1379
|
|
1380 len = 0;
|
|
1381
|
|
1382 for (i = 0; i < uri.len; /* void */ ) {
|
|
1383
|
|
1384 name.len = 0;
|
|
1385
|
|
1386 if (uri.data[i] == '$') {
|
|
1387
|
|
1388 if (++i == uri.len) {
|
|
1389 goto invalid_variable;
|
|
1390 }
|
|
1391
|
|
1392 if (uri.data[i] == '{') {
|
|
1393 bracket = 1;
|
|
1394
|
|
1395 if (++i == uri.len) {
|
|
1396 goto invalid_variable;
|
|
1397 }
|
|
1398
|
|
1399 name.data = &uri.data[i];
|
|
1400
|
|
1401 } else {
|
|
1402 bracket = 0;
|
|
1403 name.data = &uri.data[i];
|
|
1404 }
|
|
1405
|
|
1406 for ( /* void */ ; i < uri.len; i++, name.len++) {
|
|
1407 ch = uri.data[i];
|
|
1408
|
|
1409 if (ch == '}' && bracket) {
|
|
1410 i++;
|
|
1411 bracket = 0;
|
|
1412 break;
|
|
1413 }
|
|
1414
|
|
1415 if ((ch >= 'A' && ch <= 'Z')
|
|
1416 || (ch >= 'a' && ch <= 'z')
|
|
1417 || (ch >= '0' && ch <= '9')
|
|
1418 || ch == '_')
|
|
1419 {
|
|
1420 continue;
|
|
1421 }
|
|
1422
|
|
1423 break;
|
|
1424 }
|
|
1425
|
|
1426 if (bracket) {
|
|
1427 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1428 "the closing bracket in \"%V\" "
|
|
1429 "variable is missing", &name);
|
|
1430 return NGX_HTTP_SSI_ERROR;
|
|
1431 }
|
|
1432
|
|
1433 if (name.len == 0) {
|
|
1434 goto invalid_variable;
|
|
1435 }
|
|
1436
|
|
1437 for (j = 0; j < name.len; j++) {
|
|
1438 name.data[j] = ngx_tolower(name.data[j]);
|
|
1439 }
|
|
1440
|
|
1441 vv = ngx_http_get_variable(r, &name);
|
|
1442
|
|
1443 if (vv == NULL) {
|
|
1444 return NGX_HTTP_SSI_ERROR;
|
|
1445 }
|
|
1446
|
|
1447 if (vv == NGX_HTTP_VAR_NOT_FOUND) {
|
|
1448 continue;
|
|
1449 }
|
|
1450
|
|
1451 name = vv->text;
|
|
1452
|
|
1453 } else {
|
|
1454 name.data = &uri.data[i];
|
|
1455
|
|
1456 while (i < uri.len && uri.data[i] != '$') {
|
|
1457 i++;
|
|
1458 name.len++;
|
|
1459 }
|
|
1460 }
|
|
1461
|
|
1462 len += name.len;
|
|
1463
|
|
1464 size = ngx_array_push(&lengths);
|
|
1465 if (size == NULL) {
|
|
1466 return NGX_HTTP_SSI_ERROR;
|
|
1467 }
|
|
1468
|
|
1469 *size = name.len;
|
|
1470
|
|
1471 value = ngx_array_push(&values);
|
|
1472 if (value == NULL) {
|
|
1473 return NGX_HTTP_SSI_ERROR;
|
|
1474 }
|
|
1475
|
|
1476 *value = name.data;
|
|
1477 }
|
|
1478
|
|
1479 p = ngx_palloc(r->pool, len);
|
|
1480 if (p == NULL) {
|
|
1481 return NGX_HTTP_SSI_ERROR;
|
|
1482 }
|
|
1483
|
|
1484 uri.len = len;
|
|
1485 uri.data = p;
|
|
1486
|
|
1487 size = lengths.elts;
|
|
1488 value = values.elts;
|
|
1489
|
|
1490 for (i = 0; i < values.nelts; i++) {
|
|
1491 p = ngx_cpymem(p, value[i], size[i]);
|
|
1492 }
|
|
1493 }
|
|
1494
|
|
1495 for (i = 0; i < uri.len; i++) {
|
|
1496 if (uri.data[i] == '?') {
|
|
1497 args.len = uri.len - i - 1;
|
|
1498 args.data = &uri.data[i + 1];
|
|
1499 uri.len -= args.len + 1;
|
|
1500
|
|
1501 break;
|
|
1502 }
|
|
1503 }
|
|
1504
|
|
1505 if (ngx_http_subrequest(r, &uri, &args) != NGX_OK) {
|
|
1506 return NGX_HTTP_SSI_ERROR;
|
|
1507 }
|
|
1508
|
|
1509 return NGX_OK;
|
|
1510
|
|
1511 invalid_variable:
|
|
1512
|
|
1513 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1514 "invalid variable name in \"%V\"", &uri);
|
|
1515
|
|
1516 return NGX_ERROR;
|
|
1517 }
|
|
1518
|
|
1519
|
|
1520 static ngx_int_t
|
|
1521 ngx_http_ssi_if(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
1522 ngx_str_t **params)
|
|
1523 {
|
|
1524 ngx_str_t *expr, var;
|
|
1525 ngx_uint_t i;
|
|
1526 ngx_http_variable_value_t *vv;
|
|
1527
|
|
1528 expr = params[NGX_HTTP_SSI_IF_EXPR];
|
|
1529
|
|
1530 if (expr->data[0] != '$') {
|
|
1531 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1532 "invalid variable name in \"%V\"", expr);
|
|
1533 return NGX_HTTP_SSI_ERROR;
|
|
1534 }
|
|
1535
|
|
1536 var.len = expr->len - 1;
|
|
1537 var.data = expr->data + 1;
|
|
1538
|
|
1539 for (i = 0; i < var.len; i++) {
|
|
1540 var.data[i] = ngx_tolower(var.data[i]);
|
|
1541 }
|
|
1542
|
|
1543 vv = ngx_http_get_variable(r, &var);
|
|
1544
|
|
1545 if (vv == NULL) {
|
|
1546 return NGX_HTTP_SSI_ERROR;
|
|
1547 }
|
|
1548
|
|
1549 if (vv != NGX_HTTP_VAR_NOT_FOUND && vv->text.len != 0) {
|
|
1550 ctx->output = 1;
|
|
1551
|
|
1552 } else {
|
|
1553 ctx->output = 0;
|
|
1554 }
|
|
1555
|
|
1556 return NGX_OK;
|
|
1557 }
|
|
1558
|
|
1559
|
|
1560 static ngx_int_t
|
|
1561 ngx_http_ssi_else(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
1562 ngx_str_t **params)
|
|
1563 {
|
|
1564 ctx->output = !ctx->output;
|
|
1565
|
|
1566 return NGX_OK;
|
|
1567 }
|
|
1568
|
|
1569
|
|
1570 static ngx_int_t
|
|
1571 ngx_http_ssi_endif(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
1572 ngx_str_t **params)
|
|
1573 {
|
|
1574 ctx->output = 1;
|
|
1575
|
|
1576 return NGX_OK;
|
|
1577 }
|
|
1578
|
|
1579
|
|
1580 static ngx_http_variable_value_t *
|
|
1581 ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r, uintptr_t gmt)
|
|
1582 {
|
|
1583 ngx_http_ssi_ctx_t *ctx;
|
|
1584 ngx_http_variable_value_t *vv;
|
|
1585 struct tm tm;
|
|
1586 char buf[NGX_HTTP_SSI_DATE_LEN];
|
|
1587
|
|
1588 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
1589 if (vv == NULL) {
|
|
1590 return NULL;
|
|
1591 }
|
|
1592
|
|
1593 ctx = ngx_http_get_module_ctx(r, ngx_http_ssi_filter_module);
|
|
1594
|
|
1595 if (ctx->timefmt.len == sizeof("%s") - 1
|
|
1596 && ctx->timefmt.data[0] == '%' && ctx->timefmt.data[1] == 's')
|
|
1597 {
|
|
1598 vv->value = ngx_time() + (gmt ? 0 : ngx_gmtoff);
|
|
1599
|
|
1600 vv->text.data = ngx_palloc(r->pool, NGX_TIME_T_LEN);
|
|
1601 if (vv->text.data == NULL) {
|
|
1602 return NULL;
|
|
1603 }
|
|
1604
|
|
1605 vv->text.len = ngx_sprintf(vv->text.data, "%T", vv->value)
|
|
1606 - vv->text.data;
|
|
1607 return vv;
|
|
1608 }
|
|
1609
|
|
1610 if (gmt) {
|
|
1611 ngx_libc_gmtime(&tm);
|
|
1612 } else {
|
|
1613 ngx_libc_localtime(&tm);
|
|
1614 }
|
|
1615
|
|
1616 vv->value = ngx_time() + (gmt ? 0 : ngx_gmtoff);
|
|
1617
|
|
1618 vv->text.len = strftime(buf, NGX_HTTP_SSI_DATE_LEN,
|
|
1619 (char *) ctx->timefmt.data, &tm);
|
|
1620 if (vv->text.len == 0) {
|
|
1621 return NULL;
|
|
1622 }
|
|
1623
|
|
1624 vv->text.data = ngx_palloc(r->pool, vv->text.len);
|
|
1625 if (vv->text.data == NULL) {
|
|
1626 return NULL;
|
|
1627 }
|
|
1628
|
|
1629 ngx_memcpy(vv->text.data, buf, vv->text.len);
|
|
1630
|
|
1631 return vv;
|
|
1632 }
|
|
1633
|
|
1634
|
|
1635 static ngx_int_t
|
|
1636 ngx_http_ssi_add_variables(ngx_conf_t *cf)
|
|
1637 {
|
|
1638 ngx_http_variable_t *var, *v;
|
|
1639
|
|
1640 for (v = ngx_http_ssi_vars; v->name.len; v++) {
|
|
1641 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
1642 if (var == NULL) {
|
|
1643 return NGX_ERROR;
|
|
1644 }
|
|
1645
|
|
1646 var->handler = v->handler;
|
|
1647 var->data = v->data;
|
|
1648 }
|
|
1649
|
|
1650 return NGX_OK;
|
|
1651 }
|
|
1652
|
|
1653
|
46
|
1654 static void *
|
|
1655 ngx_http_ssi_create_conf(ngx_conf_t *cf)
|
|
1656 {
|
|
1657 ngx_http_ssi_conf_t *conf;
|
|
1658
|
48
|
1659 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssi_conf_t));
|
|
1660 if (conf == NULL) {
|
46
|
1661 return NGX_CONF_ERROR;
|
|
1662 }
|
|
1663
|
|
1664 conf->enable = NGX_CONF_UNSET;
|
|
1665 conf->silent_errors = NGX_CONF_UNSET;
|
58
|
1666 conf->ignore_recycled_buffers = NGX_CONF_UNSET;
|
46
|
1667
|
|
1668 conf->min_file_chunk = NGX_CONF_UNSET_SIZE;
|
|
1669 conf->value_len = NGX_CONF_UNSET_SIZE;
|
|
1670
|
|
1671 return conf;
|
|
1672 }
|
|
1673
|
|
1674
|
|
1675 static char *
|
|
1676 ngx_http_ssi_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
1677 {
|
|
1678 ngx_http_ssi_conf_t *prev = parent;
|
|
1679 ngx_http_ssi_conf_t *conf = child;
|
|
1680
|
|
1681 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
1682 ngx_conf_merge_value(conf->silent_errors, prev->silent_errors, 0);
|
58
|
1683 ngx_conf_merge_value(conf->ignore_recycled_buffers,
|
|
1684 prev->ignore_recycled_buffers, 0);
|
46
|
1685
|
|
1686 ngx_conf_merge_size_value(conf->min_file_chunk, prev->min_file_chunk, 1024);
|
|
1687 ngx_conf_merge_size_value(conf->value_len, prev->value_len, 256);
|
|
1688
|
|
1689 return NGX_CONF_OK;
|
|
1690 }
|
|
1691
|
|
1692
|
|
1693 static ngx_int_t
|
|
1694 ngx_http_ssi_filter_init(ngx_cycle_t *cycle)
|
|
1695 {
|
|
1696 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
1697 ngx_http_top_header_filter = ngx_http_ssi_header_filter;
|
|
1698
|
|
1699 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
1700 ngx_http_top_body_filter = ngx_http_ssi_body_filter;
|
|
1701
|
|
1702 return NGX_OK;
|
|
1703 }
|