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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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102
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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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19 #define NGX_HTTP_SSI_DATE_LEN 2048
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20
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21
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22 #define NGX_HTTP_SSI_ADD_PREFIX 1
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58
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23
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46
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24
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25 typedef struct {
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26 ngx_flag_t enable;
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27 ngx_flag_t silent_errors;
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58
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28 ngx_flag_t ignore_recycled_buffers;
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46
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29
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76
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30 ngx_array_t *types; /* array of ngx_str_t */
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31
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46
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32 size_t min_file_chunk;
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33 size_t value_len;
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34 } ngx_http_ssi_conf_t;
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35
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36
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37 typedef struct {
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102
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38 ngx_str_t name;
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39 ngx_str_t value;
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40 } ngx_http_ssi_var_t;
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41
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42
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43 typedef struct {
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46
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44 ngx_buf_t *buf;
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45
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46 u_char *pos;
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47 u_char *copy_start;
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48 u_char *copy_end;
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49
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50 ngx_str_t command;
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51 ngx_array_t params;
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52 ngx_table_elt_t *param;
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53 ngx_table_elt_t params_array[NGX_HTTP_SSI_PARAMS_N];
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54
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55 ngx_chain_t *in;
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56 ngx_chain_t *out;
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57 ngx_chain_t **last_out;
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48
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58 ngx_chain_t *busy;
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59 ngx_chain_t *free;
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46
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60
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61 ngx_uint_t state;
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62 ngx_uint_t saved_state;
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63 size_t saved;
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64 size_t looked;
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65
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66 size_t value_len;
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58
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67
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102
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68 ngx_array_t variables;
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69
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70 ngx_uint_t output; /* unsigned output:1; */
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71
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72 ngx_str_t timefmt;
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96
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73 ngx_str_t errmsg;
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46
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74 } ngx_http_ssi_ctx_t;
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75
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76
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77 typedef ngx_int_t (*ngx_http_ssi_command_pt) (ngx_http_request_t *r,
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78 ngx_http_ssi_ctx_t *ctx, ngx_str_t **);
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79
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80
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81 typedef struct {
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82 ngx_str_t name;
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83 ngx_uint_t index;
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84
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85 ngx_uint_t mandatory;
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86 } ngx_http_ssi_param_t;
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87
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88
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89 typedef struct {
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90 ngx_str_t name;
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91 ngx_http_ssi_command_pt handler;
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92 ngx_http_ssi_param_t *params;
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93
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94 unsigned conditional:1;
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95 unsigned flush:1;
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96 } ngx_http_ssi_command_t;
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97
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98
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99 typedef enum {
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100 ssi_start_state = 0,
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101 ssi_tag_state,
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102 ssi_comment0_state,
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103 ssi_comment1_state,
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104 ssi_sharp_state,
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105 ssi_precommand_state,
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106 ssi_command_state,
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107 ssi_preparam_state,
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108 ssi_param_state,
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109 ssi_preequal_state,
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110 ssi_prevalue_state,
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111 ssi_double_quoted_value_state,
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112 ssi_quoted_value_state,
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113 ssi_quoted_symbol_state,
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114 ssi_postparam_state,
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115 ssi_comment_end0_state,
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116 ssi_comment_end1_state,
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117 ssi_error_state,
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118 ssi_error_end0_state,
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119 ssi_error_end1_state
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120 } ngx_http_ssi_state_e;
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121
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122
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58
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123 static ngx_int_t ngx_http_ssi_output(ngx_http_request_t *r,
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124 ngx_http_ssi_ctx_t *ctx);
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46
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125 static ngx_int_t ngx_http_ssi_parse(ngx_http_request_t *r,
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126 ngx_http_ssi_ctx_t *ctx);
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102
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127 static ngx_str_t *ngx_http_ssi_get_variable(ngx_http_request_t *r,
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128 ngx_str_t *name);
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129 static ngx_int_t ngx_http_ssi_evaluate_string(ngx_http_request_t *r,
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130 ngx_http_ssi_ctx_t *ctx, ngx_str_t *text, ngx_uint_t flags);
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131
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132 static ngx_int_t ngx_http_ssi_include(ngx_http_request_t *r,
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133 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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46
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134 static ngx_int_t ngx_http_ssi_echo(ngx_http_request_t *r,
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135 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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58
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136 static ngx_int_t ngx_http_ssi_config(ngx_http_request_t *r,
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137 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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102
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138 static ngx_int_t ngx_http_ssi_set(ngx_http_request_t *r,
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58
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139 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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140 static ngx_int_t ngx_http_ssi_if(ngx_http_request_t *r,
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141 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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142 static ngx_int_t ngx_http_ssi_else(ngx_http_request_t *r,
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143 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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144 static ngx_int_t ngx_http_ssi_endif(ngx_http_request_t *r,
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145 ngx_http_ssi_ctx_t *ctx, ngx_str_t **params);
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46
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146
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122
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147 static ngx_int_t ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r,
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148 ngx_http_variable_value_t *v, uintptr_t gmt);
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58
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149
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76
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150 static char *ngx_http_ssi_types(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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151
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58
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152 static ngx_int_t ngx_http_ssi_add_variables(ngx_conf_t *cf);
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46
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153 static void *ngx_http_ssi_create_conf(ngx_conf_t *cf);
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154 static char *ngx_http_ssi_merge_conf(ngx_conf_t *cf,
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155 void *parent, void *child);
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156 static ngx_int_t ngx_http_ssi_filter_init(ngx_cycle_t *cycle);
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157
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158
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159 static ngx_command_t ngx_http_ssi_filter_commands[] = {
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160
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161 { ngx_string("ssi"),
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162 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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163 ngx_conf_set_flag_slot,
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164 NGX_HTTP_LOC_CONF_OFFSET,
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165 offsetof(ngx_http_ssi_conf_t, enable),
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166 NULL },
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167
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168 { ngx_string("ssi_silent_errors"),
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169 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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170 ngx_conf_set_flag_slot,
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171 NGX_HTTP_LOC_CONF_OFFSET,
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172 offsetof(ngx_http_ssi_conf_t, silent_errors),
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173 NULL },
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174
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58
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175 { ngx_string("ssi_ignore_recycled_buffers"),
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176 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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177 ngx_conf_set_flag_slot,
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178 NGX_HTTP_LOC_CONF_OFFSET,
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179 offsetof(ngx_http_ssi_conf_t, ignore_recycled_buffers),
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180 NULL },
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181
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182 { ngx_string("ssi_min_file_chunk"),
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183 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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184 ngx_conf_set_size_slot,
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185 NGX_HTTP_LOC_CONF_OFFSET,
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186 offsetof(ngx_http_ssi_conf_t, min_file_chunk),
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187 NULL },
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188
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138
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189 { ngx_string("ssi_value_length"),
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190 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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191 ngx_conf_set_size_slot,
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192 NGX_HTTP_LOC_CONF_OFFSET,
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193 offsetof(ngx_http_ssi_conf_t, value_len),
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194 NULL },
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195
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76
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196 { ngx_string("ssi_types"),
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197 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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198 ngx_http_ssi_types,
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199 NGX_HTTP_LOC_CONF_OFFSET,
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200 0,
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201 NULL },
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202
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46
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203 ngx_null_command
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204 };
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205
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206
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126
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207
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208 static ngx_http_module_t ngx_http_ssi_filter_module_ctx = {
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58
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209 ngx_http_ssi_add_variables, /* preconfiguration */
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210 NULL, /* postconfiguration */
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46
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211
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212 NULL, /* create main configuration */
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213 NULL, /* init main configuration */
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214
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215 NULL, /* create server configuration */
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216 NULL, /* merge server configuration */
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217
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218 ngx_http_ssi_create_conf, /* create location configuration */
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219 ngx_http_ssi_merge_conf /* merge location configuration */
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126
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220 };
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46
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221
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222
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223 ngx_module_t ngx_http_ssi_filter_module = {
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58
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224 NGX_MODULE_V1,
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225 &ngx_http_ssi_filter_module_ctx, /* module context */
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226 ngx_http_ssi_filter_commands, /* module directives */
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227 NGX_HTTP_MODULE, /* module type */
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90
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228 NULL, /* init master */
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229 ngx_http_ssi_filter_init, /* init module */
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90
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230 NULL, /* init process */
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231 NULL, /* init thread */
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232 NULL, /* exit thread */
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233 NULL, /* exit process */
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234 NULL, /* exit master */
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235 NGX_MODULE_V1_PADDING
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46
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236 };
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237
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238
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118
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239 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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240 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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46
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241
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242
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243 static u_char ngx_http_ssi_string[] = "<!--";
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244
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245 static ngx_str_t ngx_http_ssi_none = ngx_string("(none)");
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246
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102
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247 #define NGX_HTTP_SSI_INCLUDE_VIRTUAL 0
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248 #define NGX_HTTP_SSI_INCLUDE_FILE 1
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249
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58
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250 #define NGX_HTTP_SSI_ECHO_VAR 0
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251 #define NGX_HTTP_SSI_ECHO_DEFAULT 1
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252
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96
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253 #define NGX_HTTP_SSI_CONFIG_ERRMSG 0
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254 #define NGX_HTTP_SSI_CONFIG_TIMEFMT 1
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255
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102
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256 #define NGX_HTTP_SSI_SET_VAR 0
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257 #define NGX_HTTP_SSI_SET_VALUE 1
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258
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259 #define NGX_HTTP_SSI_IF_EXPR 0
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260
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261
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102
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262 static ngx_http_ssi_param_t ngx_http_ssi_include_params[] = {
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263 { ngx_string("virtual"), NGX_HTTP_SSI_INCLUDE_VIRTUAL, 0 },
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264 { ngx_string("file"), NGX_HTTP_SSI_INCLUDE_FILE, 0 },
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265 { ngx_null_string, 0, 0 }
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266 };
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267
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268
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269 static ngx_http_ssi_param_t ngx_http_ssi_echo_params[] = {
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270 { ngx_string("var"), NGX_HTTP_SSI_ECHO_VAR, 1 },
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271 { ngx_string("default"), NGX_HTTP_SSI_ECHO_DEFAULT, 0 },
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272 { ngx_null_string, 0, 0 }
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273 };
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274
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275
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276 static ngx_http_ssi_param_t ngx_http_ssi_config_params[] = {
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96
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277 { ngx_string("errmsg"), NGX_HTTP_SSI_CONFIG_ERRMSG, 0 },
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58
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278 { ngx_string("timefmt"), NGX_HTTP_SSI_CONFIG_TIMEFMT, 0 },
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279 { ngx_null_string, 0, 0 }
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280 };
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281
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282
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102
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283 static ngx_http_ssi_param_t ngx_http_ssi_set_params[] = {
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284 { ngx_string("var"), NGX_HTTP_SSI_SET_VAR, 1 },
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285 { ngx_string("value"), NGX_HTTP_SSI_SET_VALUE, 1 },
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286 { ngx_null_string, 0, 0 }
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287 };
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288
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289
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290 static ngx_http_ssi_param_t ngx_http_ssi_if_params[] = {
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102
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291 { ngx_string("expr"), NGX_HTTP_SSI_IF_EXPR, 1 },
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58
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292 { ngx_null_string, 0, 0 }
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293 };
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294
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295
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296 static ngx_http_ssi_param_t ngx_http_ssi_no_params[] = {
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297 { ngx_null_string, 0, 0 }
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298 };
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299
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46
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300
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301 static ngx_http_ssi_command_t ngx_http_ssi_commands[] = {
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102
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302 { ngx_string("include"), ngx_http_ssi_include,
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303 ngx_http_ssi_include_params, 0, 1 },
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58
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304 { ngx_string("echo"), ngx_http_ssi_echo, ngx_http_ssi_echo_params, 0, 0 },
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305 { ngx_string("config"), ngx_http_ssi_config,
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306 ngx_http_ssi_config_params, 0, 0 },
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102
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307 { ngx_string("set"), ngx_http_ssi_set, ngx_http_ssi_set_params, 0, 0 },
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58
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308
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309 { ngx_string("if"), ngx_http_ssi_if, ngx_http_ssi_if_params, 0, 0 },
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310 { ngx_string("else"), ngx_http_ssi_else, ngx_http_ssi_no_params, 1, 0 },
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311 { ngx_string("endif"), ngx_http_ssi_endif, ngx_http_ssi_no_params, 1, 0 },
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312
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313 { ngx_null_string, NULL, NULL, 0, 0 }
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46
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314 };
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315
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316
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58
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317 static ngx_http_variable_t ngx_http_ssi_vars[] = {
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318
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319 { ngx_string("date_local"), ngx_http_ssi_date_gmt_local_variable, 0,
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82
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320 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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321
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322 { ngx_string("date_gmt"), ngx_http_ssi_date_gmt_local_variable, 1,
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82
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323 NGX_HTTP_VAR_NOCACHABLE, 0 },
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58
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324
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82
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325 { ngx_null_string, NULL, 0, 0, 0 }
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58
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326 };
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327
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328
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329
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46
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330 static ngx_int_t
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331 ngx_http_ssi_header_filter(ngx_http_request_t *r)
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332 {
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76
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333 ngx_uint_t i;
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334 ngx_str_t *type;
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46
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335 ngx_http_ssi_ctx_t *ctx;
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336 ngx_http_ssi_conf_t *conf;
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337
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338 conf = ngx_http_get_module_loc_conf(r, ngx_http_ssi_filter_module);
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339
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76
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340 if (!conf->enable
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126
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341 || r->headers_out.content_type.len == 0
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342 || r->headers_out.content_length_n == 0)
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46
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343 {
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344 return ngx_http_next_header_filter(r);
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345 }
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346
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347
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76
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348 type = conf->types->elts;
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349 for (i = 0; i < conf->types->nelts; i++) {
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350 if (r->headers_out.content_type.len >= type[i].len
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351 && ngx_strncasecmp(r->headers_out.content_type.data,
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352 type[i].data, type[i].len) == 0)
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353 {
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|
354 goto found;
|
|
|
355 }
|
|
|
356 }
|
|
|
357
|
|
|
358 return ngx_http_next_header_filter(r);
|
|
|
359
|
|
|
360
|
|
|
361 found:
|
|
|
362
|
|
48
|
363 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_ssi_ctx_t));
|
|
|
364 if (ctx == NULL) {
|
|
46
|
365 return NGX_ERROR;
|
|
|
366 }
|
|
|
367
|
|
|
368 ngx_http_set_ctx(r, ctx, ngx_http_ssi_filter_module);
|
|
|
369
|
|
|
370
|
|
|
371 ctx->value_len = conf->value_len;
|
|
|
372 ctx->last_out = &ctx->out;
|
|
|
373
|
|
58
|
374 ctx->output = 1;
|
|
|
375
|
|
46
|
376 ctx->params.elts = ctx->params_array;
|
|
|
377 ctx->params.size = sizeof(ngx_table_elt_t);
|
|
|
378 ctx->params.nalloc = NGX_HTTP_SSI_PARAMS_N;
|
|
|
379 ctx->params.pool = r->pool;
|
|
|
380
|
|
58
|
381 ctx->timefmt.len = sizeof("%A, %d-%b-%Y %H:%M:%S %Z") - 1;
|
|
|
382 ctx->timefmt.data = (u_char *) "%A, %d-%b-%Y %H:%M:%S %Z";
|
|
46
|
383
|
|
96
|
384 ctx->errmsg.len =
|
|
|
385 sizeof("[an error occurred while processing the directive]") - 1;
|
|
|
386 ctx->errmsg.data = (u_char *)
|
|
|
387 "[an error occurred while processing the directive]";
|
|
|
388
|
|
46
|
389 r->filter_need_in_memory = 1;
|
|
|
390
|
|
102
|
391 if (r->main == r) {
|
|
126
|
392 ngx_http_clear_content_length(r);
|
|
|
393 ngx_http_clear_last_modified(r);
|
|
58
|
394 }
|
|
|
395
|
|
46
|
396 return ngx_http_next_header_filter(r);
|
|
|
397 }
|
|
|
398
|
|
|
399
|
|
|
400 static ngx_int_t
|
|
|
401 ngx_http_ssi_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
|
|
|
402 {
|
|
|
403 ngx_int_t rc;
|
|
|
404 ngx_uint_t i;
|
|
|
405 ngx_buf_t *b;
|
|
|
406 ngx_chain_t *cl;
|
|
|
407 ngx_table_elt_t *param;
|
|
118
|
408 ngx_connection_t *c;
|
|
46
|
409 ngx_http_ssi_ctx_t *ctx;
|
|
|
410 ngx_http_ssi_conf_t *conf;
|
|
|
411 ngx_http_ssi_param_t *prm;
|
|
|
412 ngx_http_ssi_command_t *cmd;
|
|
|
413 ngx_str_t *params[NGX_HTTP_SSI_MAX_PARAMS];
|
|
|
414
|
|
|
415 ctx = ngx_http_get_module_ctx(r, ngx_http_ssi_filter_module);
|
|
|
416
|
|
48
|
417 if (ctx == NULL || (in == NULL && ctx->in == NULL && ctx->busy == NULL)) {
|
|
46
|
418 return ngx_http_next_body_filter(r, in);
|
|
|
419 }
|
|
|
420
|
|
|
421 /* add the incoming chain to the chain ctx->in */
|
|
|
422
|
|
|
423 if (in) {
|
|
|
424 if (ngx_chain_add_copy(r->pool, &ctx->in, in) == NGX_ERROR) {
|
|
|
425 return NGX_ERROR;
|
|
|
426 }
|
|
|
427 }
|
|
|
428
|
|
|
429 conf = ngx_http_get_module_loc_conf(r, ngx_http_ssi_filter_module);
|
|
|
430
|
|
58
|
431 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
432 "http ssi filter \"%V\"", &r->uri);
|
|
46
|
433
|
|
48
|
434 while (ctx->in || ctx->buf) {
|
|
46
|
435
|
|
48
|
436 if (ctx->buf == NULL ){
|
|
|
437 ctx->buf = ctx->in->buf;
|
|
|
438 ctx->in = ctx->in->next;
|
|
|
439 ctx->pos = ctx->buf->pos;
|
|
|
440 }
|
|
46
|
441
|
|
|
442 if (ctx->state == ssi_start_state) {
|
|
|
443 ctx->copy_start = ctx->pos;
|
|
|
444 ctx->copy_end = ctx->pos;
|
|
|
445 }
|
|
|
446
|
|
48
|
447 b = NULL;
|
|
|
448
|
|
46
|
449 while (ctx->pos < ctx->buf->last) {
|
|
|
450
|
|
|
451 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
452 "saved: %d state: %d", ctx->saved, ctx->state);
|
|
|
453
|
|
|
454 rc = ngx_http_ssi_parse(r, ctx);
|
|
|
455
|
|
|
456 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
457 "parse: %d, looked: %d %p-%p",
|
|
|
458 rc, ctx->looked, ctx->copy_start, ctx->copy_end);
|
|
|
459
|
|
|
460 if (rc == NGX_ERROR) {
|
|
|
461 return rc;
|
|
|
462 }
|
|
|
463
|
|
|
464 if (ctx->copy_start != ctx->copy_end) {
|
|
|
465
|
|
58
|
466 if (ctx->output) {
|
|
|
467
|
|
|
468 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
469 "saved: %d", ctx->saved);
|
|
|
470
|
|
|
471 if (ctx->saved) {
|
|
|
472
|
|
|
473 if (ctx->free) {
|
|
|
474 cl = ctx->free;
|
|
|
475 ctx->free = ctx->free->next;
|
|
|
476 b = cl->buf;
|
|
|
477 ngx_memzero(b, sizeof(ngx_buf_t));
|
|
46
|
478
|
|
58
|
479 } else {
|
|
|
480 b = ngx_calloc_buf(r->pool);
|
|
|
481 if (b == NULL) {
|
|
|
482 return NGX_ERROR;
|
|
|
483 }
|
|
|
484
|
|
|
485 cl = ngx_alloc_chain_link(r->pool);
|
|
|
486 if (cl == NULL) {
|
|
|
487 return NGX_ERROR;
|
|
|
488 }
|
|
|
489
|
|
|
490 cl->buf = b;
|
|
|
491 }
|
|
|
492
|
|
|
493 b->memory = 1;
|
|
|
494 b->pos = ngx_http_ssi_string;
|
|
|
495 b->last = ngx_http_ssi_string + ctx->saved;
|
|
|
496
|
|
|
497 *ctx->last_out = cl;
|
|
|
498 ctx->last_out = &cl->next;
|
|
|
499
|
|
|
500 ctx->saved = 0;
|
|
|
501 }
|
|
48
|
502
|
|
|
503 if (ctx->free) {
|
|
|
504 cl = ctx->free;
|
|
|
505 ctx->free = ctx->free->next;
|
|
|
506 b = cl->buf;
|
|
|
507
|
|
|
508 } else {
|
|
58
|
509 b = ngx_alloc_buf(r->pool);
|
|
48
|
510 if (b == NULL) {
|
|
|
511 return NGX_ERROR;
|
|
|
512 }
|
|
|
513
|
|
|
514 cl = ngx_alloc_chain_link(r->pool);
|
|
|
515 if (cl == NULL) {
|
|
|
516 return NGX_ERROR;
|
|
|
517 }
|
|
|
518
|
|
|
519 cl->buf = b;
|
|
46
|
520 }
|
|
|
521
|
|
58
|
522 ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t));
|
|
|
523
|
|
62
|
524 b->pos = ctx->copy_start;
|
|
|
525 b->last = ctx->copy_end;
|
|
|
526 b->shadow = NULL;
|
|
58
|
527 b->last_buf = 0;
|
|
|
528 b->recycled = 0;
|
|
46
|
529
|
|
58
|
530 if (b->in_file) {
|
|
|
531 if (conf->min_file_chunk < (size_t) (b->last - b->pos))
|
|
|
532 {
|
|
|
533 b->file_last = b->file_pos + (b->last - b->start);
|
|
|
534 b->file_pos += b->pos - b->start;
|
|
|
535
|
|
|
536 } else {
|
|
|
537 b->in_file = 0;
|
|
|
538 }
|
|
|
539 }
|
|
|
540
|
|
|
541 cl->next = NULL;
|
|
46
|
542 *ctx->last_out = cl;
|
|
|
543 ctx->last_out = &cl->next;
|
|
|
544
|
|
58
|
545 } else {
|
|
46
|
546 ctx->saved = 0;
|
|
|
547 }
|
|
|
548 }
|
|
|
549
|
|
|
550 if (ctx->state == ssi_start_state) {
|
|
|
551 ctx->copy_start = ctx->pos;
|
|
|
552 ctx->copy_end = ctx->pos;
|
|
|
553
|
|
|
554 } else {
|
|
|
555 ctx->copy_start = NULL;
|
|
|
556 ctx->copy_end = NULL;
|
|
|
557 }
|
|
|
558
|
|
|
559 if (rc == NGX_AGAIN) {
|
|
|
560 continue;
|
|
|
561 }
|
|
|
562
|
|
|
563
|
|
122
|
564 b = NULL;
|
|
|
565
|
|
46
|
566 if (rc == NGX_OK) {
|
|
|
567
|
|
|
568 for (cmd = ngx_http_ssi_commands; cmd->handler; cmd++) {
|
|
|
569 if (cmd->name.len == 0) {
|
|
|
570 cmd = (ngx_http_ssi_command_t *) cmd->handler;
|
|
|
571 }
|
|
|
572
|
|
|
573 if (cmd->name.len != ctx->command.len
|
|
|
574 || ngx_strncmp(cmd->name.data, ctx->command.data,
|
|
|
575 ctx->command.len) != 0)
|
|
|
576 {
|
|
|
577 continue;
|
|
|
578 }
|
|
|
579
|
|
|
580 break;
|
|
|
581 }
|
|
|
582
|
|
58
|
583 if (cmd->name.len == 0 && ctx->output) {
|
|
46
|
584 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
585 "invalid SSI command: \"%V\"", &ctx->command);
|
|
|
586 goto ssi_error;
|
|
|
587 }
|
|
|
588
|
|
58
|
589 if (!ctx->output && !cmd->conditional) {
|
|
|
590 continue;
|
|
|
591 }
|
|
|
592
|
|
46
|
593 ngx_memzero(params,
|
|
|
594 NGX_HTTP_SSI_MAX_PARAMS * sizeof(ngx_str_t *));
|
|
|
595
|
|
|
596 param = ctx->params.elts;
|
|
|
597
|
|
|
598
|
|
|
599 for (i = 0; i < ctx->params.nelts; i++) {
|
|
|
600
|
|
|
601 for (prm = cmd->params; prm->name.len; prm++) {
|
|
|
602
|
|
|
603 if (param[i].key.len != prm->name.len
|
|
|
604 || ngx_strncmp(param[i].key.data, prm->name.data,
|
|
|
605 prm->name.len) != 0)
|
|
|
606 {
|
|
|
607 continue;
|
|
|
608 }
|
|
|
609
|
|
|
610 if (params[prm->index]) {
|
|
|
611 ngx_log_error(NGX_LOG_ERR,
|
|
|
612 r->connection->log, 0,
|
|
|
613 "duplicate \"%V\" parameter "
|
|
|
614 "in \"%V\" SSI command",
|
|
|
615 ¶m[i].key, &ctx->command);
|
|
|
616
|
|
|
617 goto ssi_error;
|
|
|
618 }
|
|
|
619
|
|
|
620 params[prm->index] = ¶m[i].value;
|
|
|
621
|
|
|
622 break;
|
|
|
623 }
|
|
|
624
|
|
|
625 if (prm->name.len == 0) {
|
|
|
626 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
627 "invalid parameter name: \"%V\" "
|
|
|
628 "in \"%V\" SSI command",
|
|
|
629 ¶m[i].key, &ctx->command);
|
|
|
630
|
|
|
631 goto ssi_error;
|
|
|
632 }
|
|
|
633 }
|
|
|
634
|
|
|
635 for (prm = cmd->params; prm->name.len; prm++) {
|
|
|
636 if (prm->mandatory && params[prm->index] == 0) {
|
|
|
637 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
638 "mandatory \"%V\" parameter is absent "
|
|
|
639 "in \"%V\" SSI command",
|
|
|
640 &prm->name, &ctx->command);
|
|
|
641
|
|
|
642 goto ssi_error;
|
|
|
643 }
|
|
|
644 }
|
|
|
645
|
|
58
|
646 if (cmd->flush && ctx->out) {
|
|
|
647 rc = ngx_http_ssi_output(r, ctx);
|
|
|
648
|
|
|
649 if (rc == NGX_ERROR) {
|
|
|
650 return NGX_ERROR;
|
|
|
651 }
|
|
|
652 }
|
|
|
653
|
|
118
|
654 c = r->connection;
|
|
|
655
|
|
|
656 rc = cmd->handler(r, ctx, params);
|
|
|
657
|
|
132
|
658 if (c->destroyed) {
|
|
118
|
659 return NGX_DONE;
|
|
|
660 }
|
|
|
661
|
|
|
662 if (rc == NGX_OK) {
|
|
46
|
663 continue;
|
|
|
664 }
|
|
132
|
665
|
|
|
666 if (rc == NGX_ERROR) {
|
|
|
667 return NGX_ERROR;
|
|
|
668 }
|
|
46
|
669 }
|
|
|
670
|
|
|
671
|
|
|
672 /* rc == NGX_HTTP_SSI_ERROR */
|
|
|
673
|
|
48
|
674 ssi_error:
|
|
46
|
675
|
|
|
676 if (conf->silent_errors) {
|
|
|
677 continue;
|
|
|
678 }
|
|
|
679
|
|
48
|
680 if (ctx->free) {
|
|
|
681 cl = ctx->free;
|
|
|
682 ctx->free = ctx->free->next;
|
|
|
683 b = cl->buf;
|
|
|
684 ngx_memzero(b, sizeof(ngx_buf_t));
|
|
|
685
|
|
|
686 } else {
|
|
|
687 b = ngx_calloc_buf(r->pool);
|
|
|
688 if (b == NULL) {
|
|
|
689 return NGX_ERROR;
|
|
|
690 }
|
|
|
691
|
|
|
692 cl = ngx_alloc_chain_link(r->pool);
|
|
|
693 if (cl == NULL) {
|
|
|
694 return NGX_ERROR;
|
|
|
695 }
|
|
|
696
|
|
|
697 cl->buf = b;
|
|
46
|
698 }
|
|
|
699
|
|
|
700 b->memory = 1;
|
|
96
|
701 b->pos = ctx->errmsg.data;
|
|
|
702 b->last = ctx->errmsg.data + ctx->errmsg.len;
|
|
46
|
703
|
|
|
704 cl->next = NULL;
|
|
|
705 *ctx->last_out = cl;
|
|
|
706 ctx->last_out = &cl->next;
|
|
|
707
|
|
|
708 continue;
|
|
|
709 }
|
|
|
710
|
|
58
|
711 if (ctx->buf->last_buf || ctx->buf->recycled) {
|
|
|
712
|
|
48
|
713 if (b == NULL) {
|
|
|
714 if (ctx->free) {
|
|
|
715 cl = ctx->free;
|
|
|
716 ctx->free = ctx->free->next;
|
|
|
717 b = cl->buf;
|
|
|
718 ngx_memzero(b, sizeof(ngx_buf_t));
|
|
|
719
|
|
|
720 } else {
|
|
|
721 b = ngx_calloc_buf(r->pool);
|
|
|
722 if (b == NULL) {
|
|
|
723 return NGX_ERROR;
|
|
|
724 }
|
|
46
|
725
|
|
48
|
726 cl = ngx_alloc_chain_link(r->pool);
|
|
|
727 if (cl == NULL) {
|
|
|
728 return NGX_ERROR;
|
|
|
729 }
|
|
|
730
|
|
|
731 cl->buf = b;
|
|
|
732 }
|
|
|
733
|
|
58
|
734 b->sync = 1;
|
|
|
735
|
|
48
|
736 cl->next = NULL;
|
|
|
737 *ctx->last_out = cl;
|
|
|
738 ctx->last_out = &cl->next;
|
|
|
739 }
|
|
|
740
|
|
|
741 b->last_buf = ctx->buf->last_buf;
|
|
|
742 b->shadow = ctx->buf;
|
|
58
|
743
|
|
|
744 if (conf->ignore_recycled_buffers == 0) {
|
|
|
745 b->recycled = ctx->buf->recycled;
|
|
|
746 }
|
|
46
|
747 }
|
|
|
748
|
|
48
|
749 ctx->buf = NULL;
|
|
|
750
|
|
46
|
751 ctx->saved = ctx->looked;
|
|
|
752 }
|
|
|
753
|
|
48
|
754 if (ctx->out == NULL && ctx->busy == NULL) {
|
|
46
|
755 return NGX_OK;
|
|
|
756 }
|
|
|
757
|
|
58
|
758 return ngx_http_ssi_output(r, ctx);
|
|
|
759 }
|
|
|
760
|
|
|
761
|
|
|
762 static ngx_int_t
|
|
|
763 ngx_http_ssi_output(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx)
|
|
|
764 {
|
|
|
765 ngx_int_t rc;
|
|
|
766 ngx_buf_t *b;
|
|
|
767 ngx_chain_t *cl;
|
|
|
768
|
|
46
|
769 rc = ngx_http_next_body_filter(r, ctx->out);
|
|
|
770
|
|
48
|
771 if (ctx->busy == NULL) {
|
|
|
772 ctx->busy = ctx->out;
|
|
|
773
|
|
|
774 } else {
|
|
|
775 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ }
|
|
|
776 cl->next = ctx->out;
|
|
|
777 }
|
|
|
778
|
|
46
|
779 ctx->out = NULL;
|
|
|
780 ctx->last_out = &ctx->out;
|
|
|
781
|
|
48
|
782 while (ctx->busy) {
|
|
|
783
|
|
|
784 b = ctx->busy->buf;
|
|
|
785
|
|
|
786 if (ngx_buf_size(b) != 0) {
|
|
|
787 break;
|
|
|
788 }
|
|
|
789
|
|
|
790 #if (NGX_HAVE_WRITE_ZEROCOPY)
|
|
|
791 if (b->zerocopy_busy) {
|
|
|
792 break;
|
|
|
793 }
|
|
|
794 #endif
|
|
|
795
|
|
|
796 if (b->shadow) {
|
|
|
797 b->shadow->pos = b->shadow->last;
|
|
|
798 }
|
|
|
799
|
|
|
800 cl = ctx->busy;
|
|
|
801 ctx->busy = cl->next;
|
|
|
802 cl->next = ctx->free;
|
|
|
803 ctx->free = cl;
|
|
|
804 }
|
|
|
805
|
|
46
|
806 return rc;
|
|
|
807 }
|
|
|
808
|
|
|
809
|
|
|
810 static ngx_int_t
|
|
|
811 ngx_http_ssi_parse(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx)
|
|
|
812 {
|
|
|
813 u_char *p, *last, *copy_end, ch;
|
|
|
814 size_t looked;
|
|
|
815 ngx_http_ssi_state_e state;
|
|
|
816
|
|
|
817 state = ctx->state;
|
|
|
818 looked = ctx->looked;
|
|
|
819 last = ctx->buf->last;
|
|
|
820 copy_end = ctx->copy_end;
|
|
|
821
|
|
|
822 for (p = ctx->pos; p < last; p++) {
|
|
|
823
|
|
|
824 ch = *p;
|
|
|
825
|
|
|
826 if (state == ssi_start_state) {
|
|
|
827
|
|
|
828 /* the tight loop */
|
|
|
829
|
|
48
|
830 for ( ;; ) {
|
|
|
831 if (ch == '<') {
|
|
|
832 copy_end = p;
|
|
|
833 looked = 1;
|
|
|
834 state = ssi_tag_state;
|
|
|
835
|
|
|
836 goto tag_started;
|
|
46
|
837 }
|
|
|
838
|
|
48
|
839 if (++p == last) {
|
|
|
840 break;
|
|
|
841 }
|
|
46
|
842
|
|
48
|
843 ch = *p;
|
|
46
|
844 }
|
|
|
845
|
|
|
846 ctx->pos = p;
|
|
|
847 ctx->looked = looked;
|
|
|
848 ctx->copy_end = p;
|
|
|
849
|
|
|
850 if (ctx->copy_start == NULL) {
|
|
|
851 ctx->copy_start = ctx->buf->pos;
|
|
|
852 }
|
|
|
853
|
|
|
854 return NGX_AGAIN;
|
|
|
855
|
|
48
|
856 tag_started:
|
|
|
857
|
|
46
|
858 continue;
|
|
|
859 }
|
|
|
860
|
|
|
861 switch (state) {
|
|
|
862
|
|
|
863 case ssi_start_state:
|
|
|
864 break;
|
|
|
865
|
|
|
866 case ssi_tag_state:
|
|
|
867 switch (ch) {
|
|
|
868 case '!':
|
|
|
869 looked = 2;
|
|
|
870 state = ssi_comment0_state;
|
|
|
871 break;
|
|
|
872
|
|
|
873 case '<':
|
|
|
874 copy_end = p;
|
|
|
875 break;
|
|
|
876
|
|
|
877 default:
|
|
|
878 copy_end = p;
|
|
|
879 looked = 0;
|
|
|
880 state = ssi_start_state;
|
|
|
881 break;
|
|
|
882 }
|
|
|
883
|
|
|
884 break;
|
|
|
885
|
|
|
886 case ssi_comment0_state:
|
|
|
887 switch (ch) {
|
|
|
888 case '-':
|
|
|
889 looked = 3;
|
|
|
890 state = ssi_comment1_state;
|
|
|
891 break;
|
|
|
892
|
|
|
893 case '<':
|
|
|
894 copy_end = p;
|
|
|
895 looked = 1;
|
|
|
896 state = ssi_tag_state;
|
|
|
897 break;
|
|
|
898
|
|
|
899 default:
|
|
|
900 copy_end = p;
|
|
|
901 looked = 0;
|
|
|
902 state = ssi_start_state;
|
|
|
903 break;
|
|
|
904 }
|
|
|
905
|
|
|
906 break;
|
|
|
907
|
|
|
908 case ssi_comment1_state:
|
|
|
909 switch (ch) {
|
|
|
910 case '-':
|
|
|
911 looked = 4;
|
|
|
912 state = ssi_sharp_state;
|
|
|
913 break;
|
|
|
914
|
|
|
915 case '<':
|
|
|
916 copy_end = p;
|
|
|
917 looked = 1;
|
|
|
918 state = ssi_tag_state;
|
|
|
919 break;
|
|
|
920
|
|
|
921 default:
|
|
|
922 copy_end = p;
|
|
|
923 looked = 0;
|
|
|
924 state = ssi_start_state;
|
|
|
925 break;
|
|
|
926 }
|
|
|
927
|
|
|
928 break;
|
|
|
929
|
|
|
930 case ssi_sharp_state:
|
|
|
931 switch (ch) {
|
|
|
932 case '#':
|
|
|
933 if (ctx->copy_start) {
|
|
|
934 ctx->saved = 0;
|
|
|
935 }
|
|
|
936 looked = 0;
|
|
|
937 state = ssi_precommand_state;
|
|
|
938 break;
|
|
|
939
|
|
|
940 case '<':
|
|
|
941 copy_end = p;
|
|
|
942 looked = 1;
|
|
|
943 state = ssi_tag_state;
|
|
|
944 break;
|
|
|
945
|
|
|
946 default:
|
|
|
947 copy_end = p;
|
|
|
948 looked = 0;
|
|
|
949 state = ssi_start_state;
|
|
|
950 break;
|
|
|
951 }
|
|
|
952
|
|
|
953 break;
|
|
|
954
|
|
|
955 case ssi_precommand_state:
|
|
|
956 switch (ch) {
|
|
|
957 case ' ':
|
|
|
958 case CR:
|
|
|
959 case LF:
|
|
|
960 case '\t':
|
|
|
961 break;
|
|
|
962
|
|
|
963 default:
|
|
|
964 ctx->command.len = 1;
|
|
|
965 ctx->command.data = ngx_palloc(r->pool,
|
|
|
966 NGX_HTTP_SSI_COMMAND_LEN + 1);
|
|
|
967 if (ctx->command.data == NULL) {
|
|
|
968 return NGX_ERROR;
|
|
|
969 }
|
|
|
970
|
|
|
971 ctx->command.data[0] = ch;
|
|
|
972 ctx->params.nelts = 0;
|
|
|
973 state = ssi_command_state;
|
|
|
974 break;
|
|
|
975 }
|
|
|
976
|
|
|
977 break;
|
|
|
978
|
|
|
979 case ssi_command_state:
|
|
|
980 switch (ch) {
|
|
|
981 case ' ':
|
|
|
982 case CR:
|
|
|
983 case LF:
|
|
|
984 case '\t':
|
|
|
985 state = ssi_preparam_state;
|
|
|
986 break;
|
|
|
987
|
|
|
988 case '-':
|
|
|
989 state = ssi_comment_end0_state;
|
|
|
990 break;
|
|
|
991
|
|
|
992 default:
|
|
|
993 ctx->command.data[ctx->command.len++] = ch;
|
|
|
994
|
|
|
995 if (ctx->command.len == NGX_HTTP_SSI_COMMAND_LEN) {
|
|
|
996 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
997 "the \"%V\" SSI command is too long",
|
|
|
998 &ctx->command);
|
|
|
999
|
|
|
1000 state = ssi_error_state;
|
|
|
1001 break;
|
|
|
1002 }
|
|
|
1003 }
|
|
|
1004
|
|
|
1005 break;
|
|
|
1006
|
|
|
1007 case ssi_preparam_state:
|
|
|
1008 switch (ch) {
|
|
|
1009 case ' ':
|
|
|
1010 case CR:
|
|
|
1011 case LF:
|
|
|
1012 case '\t':
|
|
|
1013 break;
|
|
|
1014
|
|
|
1015 case '-':
|
|
|
1016 state = ssi_comment_end0_state;
|
|
|
1017 break;
|
|
|
1018
|
|
|
1019 default:
|
|
48
|
1020 ctx->param = ngx_array_push(&ctx->params);
|
|
|
1021 if (ctx->param == NULL) {
|
|
46
|
1022 return NGX_ERROR;
|
|
|
1023 }
|
|
|
1024
|
|
|
1025 ctx->param->key.len = 1;
|
|
|
1026 ctx->param->key.data = ngx_palloc(r->pool,
|
|
|
1027 NGX_HTTP_SSI_PARAM_LEN + 1);
|
|
|
1028 if (ctx->param->key.data == NULL) {
|
|
|
1029 return NGX_ERROR;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 ctx->param->key.data[0] = ch;
|
|
|
1033
|
|
|
1034 ctx->param->value.len = 0;
|
|
|
1035 ctx->param->value.data = ngx_palloc(r->pool,
|
|
|
1036 ctx->value_len + 1);
|
|
|
1037 if (ctx->param->value.data == NULL) {
|
|
|
1038 return NGX_ERROR;
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 state = ssi_param_state;
|
|
|
1042 break;
|
|
|
1043 }
|
|
|
1044
|
|
|
1045 break;
|
|
|
1046
|
|
|
1047 case ssi_param_state:
|
|
|
1048 switch (ch) {
|
|
|
1049 case ' ':
|
|
|
1050 case CR:
|
|
|
1051 case LF:
|
|
|
1052 case '\t':
|
|
|
1053 state = ssi_preequal_state;
|
|
|
1054 break;
|
|
|
1055
|
|
|
1056 case '=':
|
|
|
1057 state = ssi_prevalue_state;
|
|
|
1058 break;
|
|
|
1059
|
|
|
1060 case '-':
|
|
|
1061 state = ssi_error_end0_state;
|
|
|
1062
|
|
|
1063 ctx->param->key.data[ctx->param->key.len++] = ch;
|
|
|
1064 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1065 "invalid \"%V\" parameter in \"%V\" SSI command",
|
|
|
1066 &ctx->param->key, &ctx->command);
|
|
|
1067 break;
|
|
|
1068
|
|
|
1069 default:
|
|
|
1070 ctx->param->key.data[ctx->param->key.len++] = ch;
|
|
|
1071
|
|
|
1072 if (ctx->param->key.len == NGX_HTTP_SSI_PARAM_LEN) {
|
|
|
1073 state = ssi_error_state;
|
|
|
1074 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1075 "too long \"%V\" parameter in "
|
|
|
1076 "\"%V\" SSI command",
|
|
|
1077 &ctx->param->key, &ctx->command);
|
|
|
1078 break;
|
|
|
1079 }
|
|
|
1080 }
|
|
|
1081
|
|
|
1082 break;
|
|
|
1083
|
|
|
1084 case ssi_preequal_state:
|
|
|
1085 switch (ch) {
|
|
|
1086 case ' ':
|
|
|
1087 case CR:
|
|
|
1088 case LF:
|
|
|
1089 case '\t':
|
|
|
1090 break;
|
|
|
1091
|
|
|
1092 case '=':
|
|
|
1093 state = ssi_prevalue_state;
|
|
|
1094 break;
|
|
|
1095
|
|
|
1096 default:
|
|
|
1097 if (ch == '-') {
|
|
|
1098 state = ssi_error_end0_state;
|
|
|
1099 } else {
|
|
|
1100 state = ssi_error_state;
|
|
|
1101 }
|
|
|
1102
|
|
|
1103 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1104 "unexpected \"%c\" symbol after \"%V\" "
|
|
|
1105 "parameter in \"%V\" SSI command",
|
|
|
1106 ch, &ctx->param->key, &ctx->command);
|
|
|
1107 break;
|
|
|
1108 }
|
|
|
1109
|
|
|
1110 break;
|
|
|
1111
|
|
|
1112 case ssi_prevalue_state:
|
|
|
1113 switch (ch) {
|
|
|
1114 case ' ':
|
|
|
1115 case CR:
|
|
|
1116 case LF:
|
|
|
1117 case '\t':
|
|
|
1118 break;
|
|
|
1119
|
|
|
1120 case '"':
|
|
|
1121 state = ssi_double_quoted_value_state;
|
|
|
1122 break;
|
|
|
1123
|
|
|
1124 case '\'':
|
|
|
1125 state = ssi_quoted_value_state;
|
|
|
1126 break;
|
|
|
1127
|
|
|
1128 default:
|
|
|
1129 if (ch == '-') {
|
|
|
1130 state = ssi_error_end0_state;
|
|
|
1131 } else {
|
|
|
1132 state = ssi_error_state;
|
|
|
1133 }
|
|
|
1134
|
|
|
1135 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1136 "unexpected \"%c\" symbol before value of "
|
|
|
1137 "\"%V\" parameter in \"%V\" SSI command",
|
|
|
1138 ch, &ctx->param->key, &ctx->command);
|
|
|
1139 break;
|
|
|
1140 }
|
|
|
1141
|
|
|
1142 break;
|
|
|
1143
|
|
|
1144 case ssi_double_quoted_value_state:
|
|
|
1145 switch (ch) {
|
|
108
|
1146 case '"':
|
|
|
1147 state = ssi_postparam_state;
|
|
|
1148 break;
|
|
|
1149
|
|
46
|
1150 case '\\':
|
|
|
1151 ctx->saved_state = ssi_double_quoted_value_state;
|
|
|
1152 state = ssi_quoted_symbol_state;
|
|
108
|
1153
|
|
|
1154 /* fall through */
|
|
46
|
1155
|
|
|
1156 default:
|
|
|
1157 ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
|
1158
|
|
|
1159 if (ctx->param->value.len == ctx->value_len) {
|
|
|
1160 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1161 "too long \"%V\" value of \"%V\" parameter "
|
|
|
1162 "in \"%V\" SSI command",
|
|
|
1163 &ctx->param->value, &ctx->param->key,
|
|
|
1164 &ctx->command);
|
|
|
1165 state = ssi_error_state;
|
|
|
1166 break;
|
|
|
1167 }
|
|
|
1168 }
|
|
|
1169
|
|
|
1170 break;
|
|
|
1171
|
|
|
1172 case ssi_quoted_value_state:
|
|
|
1173 switch (ch) {
|
|
108
|
1174 case '\'':
|
|
|
1175 state = ssi_postparam_state;
|
|
|
1176 break;
|
|
|
1177
|
|
46
|
1178 case '\\':
|
|
|
1179 ctx->saved_state = ssi_quoted_value_state;
|
|
|
1180 state = ssi_quoted_symbol_state;
|
|
108
|
1181
|
|
|
1182 /* fall through */
|
|
46
|
1183
|
|
|
1184 default:
|
|
|
1185 ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
|
1186
|
|
|
1187 if (ctx->param->value.len == ctx->value_len) {
|
|
|
1188 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1189 "too long \"%V\" value of \"%V\" parameter "
|
|
|
1190 "in \"%V\" SSI command",
|
|
|
1191 &ctx->param->value, &ctx->param->key,
|
|
|
1192 &ctx->command);
|
|
|
1193 state = ssi_error_state;
|
|
|
1194 break;
|
|
|
1195 }
|
|
|
1196 }
|
|
|
1197
|
|
|
1198 break;
|
|
|
1199
|
|
|
1200 case ssi_quoted_symbol_state:
|
|
108
|
1201 state = ctx->saved_state;
|
|
|
1202
|
|
|
1203 if (ch == '\\') {
|
|
|
1204 break;
|
|
|
1205 }
|
|
|
1206
|
|
|
1207 if (ch == '"' && state == ssi_double_quoted_value_state) {
|
|
122
|
1208 ctx->param->value.data[ctx->param->value.len - 1] = ch;
|
|
108
|
1209 break;
|
|
|
1210 }
|
|
|
1211
|
|
|
1212 if (ch == '\'' && state == ssi_quoted_value_state) {
|
|
122
|
1213 ctx->param->value.data[ctx->param->value.len - 1] = ch;
|
|
108
|
1214 break;
|
|
|
1215 }
|
|
|
1216
|
|
46
|
1217 ctx->param->value.data[ctx->param->value.len++] = ch;
|
|
|
1218
|
|
|
1219 if (ctx->param->value.len == ctx->value_len) {
|
|
|
1220 if (ctx->param->value.len == ctx->value_len) {
|
|
|
1221 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1222 "too long \"%V\" value of \"%V\" parameter "
|
|
|
1223 "in \"%V\" SSI command",
|
|
|
1224 &ctx->param->value, &ctx->param->key,
|
|
|
1225 &ctx->command);
|
|
|
1226 state = ssi_error_state;
|
|
|
1227 break;
|
|
|
1228 }
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 break;
|
|
|
1232
|
|
|
1233 case ssi_postparam_state:
|
|
|
1234 switch (ch) {
|
|
|
1235 case ' ':
|
|
|
1236 case CR:
|
|
|
1237 case LF:
|
|
|
1238 case '\t':
|
|
|
1239 state = ssi_preparam_state;
|
|
|
1240 break;
|
|
|
1241
|
|
|
1242 case '-':
|
|
|
1243 state = ssi_comment_end0_state;
|
|
|
1244 break;
|
|
|
1245
|
|
|
1246 default:
|
|
|
1247 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1248 "unexpected \"%c\" symbol after \"%V\" value "
|
|
|
1249 "of \"%V\" parameter in \"%V\" SSI command",
|
|
|
1250 ch, &ctx->param->value, &ctx->param->key,
|
|
|
1251 &ctx->command);
|
|
|
1252 state = ssi_error_state;
|
|
|
1253 break;
|
|
|
1254 }
|
|
|
1255
|
|
|
1256 break;
|
|
|
1257
|
|
|
1258 case ssi_comment_end0_state:
|
|
|
1259 switch (ch) {
|
|
|
1260 case '-':
|
|
|
1261 state = ssi_comment_end1_state;
|
|
|
1262 break;
|
|
|
1263
|
|
|
1264 default:
|
|
|
1265 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1266 "unexpected \"%c\" symbol in \"%V\" SSI command",
|
|
|
1267 ch, &ctx->command);
|
|
|
1268 state = ssi_error_state;
|
|
|
1269 break;
|
|
|
1270 }
|
|
|
1271
|
|
|
1272 break;
|
|
|
1273
|
|
|
1274 case ssi_comment_end1_state:
|
|
|
1275 switch (ch) {
|
|
|
1276 case '>':
|
|
|
1277 ctx->state = ssi_start_state;
|
|
|
1278 ctx->pos = p + 1;
|
|
|
1279 ctx->looked = looked;
|
|
|
1280 ctx->copy_end = copy_end;
|
|
|
1281
|
|
|
1282 if (ctx->copy_start == NULL && copy_end) {
|
|
|
1283 ctx->copy_start = ctx->buf->pos;
|
|
|
1284 }
|
|
|
1285
|
|
|
1286 return NGX_OK;
|
|
|
1287
|
|
|
1288 default:
|
|
|
1289 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1290 "unexpected \"%c\" symbol in \"%V\" SSI command",
|
|
|
1291 ch, &ctx->command);
|
|
|
1292 state = ssi_error_state;
|
|
|
1293 break;
|
|
|
1294 }
|
|
|
1295
|
|
|
1296 break;
|
|
|
1297
|
|
|
1298 case ssi_error_state:
|
|
|
1299 switch (ch) {
|
|
|
1300 case '-':
|
|
|
1301 state = ssi_error_end0_state;
|
|
|
1302 break;
|
|
|
1303
|
|
|
1304 default:
|
|
|
1305 break;
|
|
|
1306 }
|
|
|
1307
|
|
|
1308 break;
|
|
|
1309
|
|
|
1310 case ssi_error_end0_state:
|
|
|
1311 switch (ch) {
|
|
|
1312 case '-':
|
|
|
1313 state = ssi_error_end1_state;
|
|
|
1314 break;
|
|
|
1315
|
|
|
1316 default:
|
|
|
1317 state = ssi_error_state;
|
|
|
1318 break;
|
|
|
1319 }
|
|
|
1320
|
|
|
1321 break;
|
|
|
1322
|
|
|
1323 case ssi_error_end1_state:
|
|
|
1324 switch (ch) {
|
|
|
1325 case '>':
|
|
|
1326 ctx->state = ssi_start_state;
|
|
|
1327 ctx->pos = p + 1;
|
|
|
1328 ctx->looked = looked;
|
|
|
1329 ctx->copy_end = copy_end;
|
|
|
1330
|
|
|
1331 if (ctx->copy_start == NULL && copy_end) {
|
|
|
1332 ctx->copy_start = ctx->buf->pos;
|
|
|
1333 }
|
|
|
1334
|
|
|
1335 return NGX_HTTP_SSI_ERROR;
|
|
|
1336
|
|
|
1337 default:
|
|
|
1338 state = ssi_error_state;
|
|
|
1339 break;
|
|
|
1340 }
|
|
|
1341
|
|
|
1342 break;
|
|
|
1343 }
|
|
|
1344 }
|
|
|
1345
|
|
|
1346 ctx->state = state;
|
|
|
1347 ctx->pos = p;
|
|
|
1348 ctx->looked = looked;
|
|
|
1349
|
|
|
1350 ctx->copy_end = (state == ssi_start_state) ? p : copy_end;
|
|
|
1351
|
|
|
1352 if (ctx->copy_start == NULL && ctx->copy_end) {
|
|
|
1353 ctx->copy_start = ctx->buf->pos;
|
|
|
1354 }
|
|
|
1355
|
|
|
1356 return NGX_AGAIN;
|
|
|
1357 }
|
|
|
1358
|
|
|
1359
|
|
102
|
1360 static ngx_str_t *
|
|
|
1361 ngx_http_ssi_get_variable(ngx_http_request_t *r, ngx_str_t *name)
|
|
|
1362 {
|
|
|
1363 ngx_uint_t i;
|
|
|
1364 ngx_http_ssi_var_t *var;
|
|
|
1365 ngx_http_ssi_ctx_t *ctx;
|
|
|
1366
|
|
|
1367 ctx = ngx_http_get_module_ctx(r->main, ngx_http_ssi_filter_module);
|
|
|
1368
|
|
|
1369 var = ctx->variables.elts;
|
|
|
1370 for (i = 0; i < ctx->variables.nelts; i++) {
|
|
|
1371 if (name->len != var[i].name.len) {
|
|
|
1372 continue;
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 if (ngx_strncasecmp(name->data, var[i].name.data, name->len) == 0) {
|
|
|
1376 return &var[i].value;
|
|
|
1377 }
|
|
|
1378 }
|
|
|
1379
|
|
|
1380 return NULL;
|
|
|
1381 }
|
|
|
1382
|
|
|
1383
|
|
|
1384 static ngx_int_t
|
|
|
1385 ngx_http_ssi_evaluate_string(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
|
1386 ngx_str_t *text, ngx_uint_t flags)
|
|
|
1387 {
|
|
122
|
1388 u_char ch, *p, **value, *data, *part_data;
|
|
|
1389 size_t *size, len, prefix, part_len;
|
|
|
1390 ngx_str_t var, *val;
|
|
102
|
1391 ngx_uint_t i, j, n, bracket;
|
|
|
1392 ngx_array_t lengths, values;
|
|
|
1393 ngx_http_variable_value_t *vv;
|
|
|
1394
|
|
|
1395 n = ngx_http_script_variables_count(text);
|
|
|
1396
|
|
|
1397 if (n == 0) {
|
|
|
1398
|
|
|
1399 if (!(flags & NGX_HTTP_SSI_ADD_PREFIX)) {
|
|
|
1400 return NGX_OK;
|
|
|
1401 }
|
|
|
1402
|
|
|
1403 if (text->data[0] != '/') {
|
|
|
1404 for (prefix = r->uri.len; prefix; prefix--) {
|
|
|
1405 if (r->uri.data[prefix - 1] == '/') {
|
|
|
1406 break;
|
|
|
1407 }
|
|
|
1408 }
|
|
|
1409
|
|
|
1410 if (prefix) {
|
|
|
1411 len = prefix + text->len;
|
|
|
1412
|
|
|
1413 data = ngx_palloc(r->pool, len);
|
|
|
1414 if (data == NULL) {
|
|
|
1415 return NGX_ERROR;
|
|
|
1416 }
|
|
|
1417
|
|
122
|
1418 p = ngx_copy(data, r->uri.data, prefix);
|
|
102
|
1419 ngx_memcpy(p, text->data, text->len);
|
|
|
1420
|
|
|
1421 text->len = len;
|
|
|
1422 text->data = data;
|
|
|
1423 }
|
|
|
1424 }
|
|
|
1425
|
|
|
1426 return NGX_OK;
|
|
|
1427 }
|
|
|
1428
|
|
|
1429 if (ngx_array_init(&lengths, r->pool, 8, sizeof(size_t *)) != NGX_OK) {
|
|
|
1430 return NGX_ERROR;
|
|
|
1431 }
|
|
|
1432
|
|
|
1433 if (ngx_array_init(&values, r->pool, 8, sizeof(u_char *)) != NGX_OK) {
|
|
|
1434 return NGX_ERROR;
|
|
|
1435 }
|
|
|
1436
|
|
|
1437 len = 0;
|
|
|
1438 i = 0;
|
|
|
1439
|
|
|
1440 while (i < text->len) {
|
|
|
1441
|
|
|
1442 if (text->data[i] == '$') {
|
|
|
1443
|
|
|
1444 var.len = 0;
|
|
|
1445
|
|
|
1446 if (++i == text->len) {
|
|
|
1447 goto invalid_variable;
|
|
|
1448 }
|
|
|
1449
|
|
|
1450 if (text->data[i] == '{') {
|
|
|
1451 bracket = 1;
|
|
|
1452
|
|
|
1453 if (++i == text->len) {
|
|
|
1454 goto invalid_variable;
|
|
|
1455 }
|
|
|
1456
|
|
|
1457 var.data = &text->data[i];
|
|
|
1458
|
|
|
1459 } else {
|
|
|
1460 bracket = 0;
|
|
|
1461 var.data = &text->data[i];
|
|
|
1462 }
|
|
|
1463
|
|
|
1464 for ( /* void */ ; i < text->len; i++, var.len++) {
|
|
|
1465 ch = text->data[i];
|
|
|
1466
|
|
|
1467 if (ch == '}' && bracket) {
|
|
|
1468 i++;
|
|
|
1469 bracket = 0;
|
|
|
1470 break;
|
|
|
1471 }
|
|
|
1472
|
|
|
1473 if ((ch >= 'A' && ch <= 'Z')
|
|
|
1474 || (ch >= 'a' && ch <= 'z')
|
|
|
1475 || (ch >= '0' && ch <= '9')
|
|
|
1476 || ch == '_')
|
|
|
1477 {
|
|
|
1478 continue;
|
|
|
1479 }
|
|
|
1480
|
|
|
1481 break;
|
|
|
1482 }
|
|
|
1483
|
|
|
1484 if (bracket) {
|
|
|
1485 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1486 "the closing bracket in \"%V\" "
|
|
|
1487 "variable is missing", &var);
|
|
|
1488 return NGX_ERROR;
|
|
|
1489 }
|
|
|
1490
|
|
126
|
1491 if (var.len == 0) {
|
|
102
|
1492 goto invalid_variable;
|
|
|
1493 }
|
|
|
1494
|
|
|
1495 for (j = 0; j < var.len; j++) {
|
|
|
1496 var.data[j] = ngx_tolower(var.data[j]);
|
|
|
1497 }
|
|
|
1498
|
|
|
1499 val = ngx_http_ssi_get_variable(r, &var);
|
|
|
1500
|
|
|
1501 if (val == NULL) {
|
|
|
1502 vv = ngx_http_get_variable(r, &var);
|
|
|
1503
|
|
|
1504 if (vv == NULL) {
|
|
|
1505 return NGX_ERROR;
|
|
|
1506 }
|
|
|
1507
|
|
122
|
1508 if (vv->not_found) {
|
|
102
|
1509 continue;
|
|
|
1510 }
|
|
|
1511
|
|
122
|
1512 part_data = vv->data;
|
|
|
1513 part_len = vv->len;
|
|
102
|
1514
|
|
|
1515 } else {
|
|
122
|
1516 part_data = val->data;
|
|
|
1517 part_len = val->len;
|
|
102
|
1518 }
|
|
|
1519
|
|
|
1520 } else {
|
|
122
|
1521 part_data = &text->data[i];
|
|
|
1522
|
|
|
1523 for (p = part_data; i < text->len; i++) {
|
|
108
|
1524 ch = text->data[i];
|
|
|
1525
|
|
|
1526 if (ch == '$') {
|
|
|
1527 if (text->data[i - 1] != '\\') {
|
|
|
1528 break;
|
|
|
1529 }
|
|
|
1530
|
|
|
1531 *(p - 1) = ch;
|
|
|
1532
|
|
|
1533 continue;
|
|
|
1534 }
|
|
|
1535
|
|
|
1536 *p++ = ch;
|
|
102
|
1537 }
|
|
108
|
1538
|
|
122
|
1539 part_len = p - part_data;
|
|
102
|
1540 }
|
|
|
1541
|
|
122
|
1542 len += part_len;
|
|
102
|
1543
|
|
|
1544 size = ngx_array_push(&lengths);
|
|
|
1545 if (size == NULL) {
|
|
|
1546 return NGX_ERROR;
|
|
|
1547 }
|
|
|
1548
|
|
122
|
1549 *size = part_len;
|
|
102
|
1550
|
|
|
1551 value = ngx_array_push(&values);
|
|
|
1552 if (value == NULL) {
|
|
|
1553 return NGX_ERROR;
|
|
|
1554 }
|
|
|
1555
|
|
122
|
1556 *value = part_data;
|
|
102
|
1557 }
|
|
|
1558
|
|
|
1559 prefix = 0;
|
|
|
1560
|
|
|
1561 size = lengths.elts;
|
|
|
1562 value = values.elts;
|
|
|
1563
|
|
|
1564 if (flags & NGX_HTTP_SSI_ADD_PREFIX) {
|
|
|
1565 for (i = 0; i < values.nelts; i++) {
|
|
|
1566 if (size[i] != 0) {
|
|
|
1567 if (*value[i] != '/') {
|
|
|
1568 for (prefix = r->uri.len; prefix; prefix--) {
|
|
|
1569 if (r->uri.data[prefix - 1] == '/') {
|
|
|
1570 len += prefix;
|
|
|
1571 break;
|
|
|
1572 }
|
|
|
1573 }
|
|
|
1574 }
|
|
|
1575
|
|
|
1576 break;
|
|
|
1577 }
|
|
|
1578 }
|
|
|
1579 }
|
|
|
1580
|
|
|
1581 p = ngx_palloc(r->pool, len);
|
|
|
1582 if (p == NULL) {
|
|
|
1583 return NGX_ERROR;
|
|
|
1584 }
|
|
|
1585
|
|
|
1586 text->len = len;
|
|
|
1587 text->data = p;
|
|
|
1588
|
|
122
|
1589 p = ngx_copy(p, r->uri.data, prefix);
|
|
102
|
1590
|
|
|
1591 for (i = 0; i < values.nelts; i++) {
|
|
122
|
1592 p = ngx_copy(p, value[i], size[i]);
|
|
102
|
1593 }
|
|
|
1594
|
|
|
1595 return NGX_OK;
|
|
|
1596
|
|
|
1597 invalid_variable:
|
|
|
1598
|
|
|
1599 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1600 "invalid variable name in \"%V\"", text);
|
|
|
1601
|
|
|
1602 return NGX_ERROR;
|
|
|
1603 }
|
|
|
1604
|
|
|
1605
|
|
|
1606 static ngx_int_t
|
|
|
1607 ngx_http_ssi_include(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
|
1608 ngx_str_t **params)
|
|
|
1609 {
|
|
|
1610 ngx_str_t *uri, *file, args;
|
|
122
|
1611 ngx_uint_t flags;
|
|
102
|
1612
|
|
|
1613 uri = params[NGX_HTTP_SSI_INCLUDE_VIRTUAL];
|
|
|
1614 file = params[NGX_HTTP_SSI_INCLUDE_FILE];
|
|
|
1615
|
|
|
1616 if (uri && file) {
|
|
|
1617 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1618 "inlcusion may be either virtual=\"%V\" or file=\"%V\"",
|
|
|
1619 uri, file);
|
|
|
1620 return NGX_HTTP_SSI_ERROR;
|
|
|
1621 }
|
|
|
1622
|
|
|
1623 if (uri == NULL && file == NULL) {
|
|
|
1624 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1625 "no parameter in \"include\" SSI command");
|
|
|
1626 return NGX_HTTP_SSI_ERROR;
|
|
|
1627 }
|
|
|
1628
|
|
|
1629 if (uri == NULL) {
|
|
|
1630 uri = file;
|
|
|
1631 }
|
|
|
1632
|
|
|
1633 if (ngx_http_ssi_evaluate_string(r, ctx, uri, NGX_HTTP_SSI_ADD_PREFIX)
|
|
|
1634 != NGX_OK)
|
|
|
1635 {
|
|
|
1636 return NGX_HTTP_SSI_ERROR;
|
|
|
1637 }
|
|
|
1638
|
|
|
1639 args.len = 0;
|
|
|
1640 args.data = NULL;
|
|
122
|
1641 flags = 0;
|
|
|
1642
|
|
|
1643 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1644 "ssi include: \"%V\"", uri);
|
|
|
1645
|
|
|
1646 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1647 return NGX_HTTP_SSI_ERROR;
|
|
102
|
1648 }
|
|
|
1649
|
|
122
|
1650 if (ngx_http_subrequest(r, uri, &args, flags) != NGX_OK) {
|
|
102
|
1651 return NGX_HTTP_SSI_ERROR;
|
|
|
1652 }
|
|
|
1653
|
|
|
1654 return NGX_OK;
|
|
|
1655 }
|
|
|
1656
|
|
|
1657
|
|
46
|
1658 static ngx_int_t
|
|
|
1659 ngx_http_ssi_echo(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
|
1660 ngx_str_t **params)
|
|
|
1661 {
|
|
50
|
1662 ngx_uint_t i;
|
|
48
|
1663 ngx_buf_t *b;
|
|
122
|
1664 ngx_str_t *var, *value, text;
|
|
48
|
1665 ngx_chain_t *cl;
|
|
50
|
1666 ngx_http_variable_value_t *vv;
|
|
46
|
1667
|
|
|
1668 var = params[NGX_HTTP_SSI_ECHO_VAR];
|
|
|
1669
|
|
102
|
1670 value = ngx_http_ssi_get_variable(r, var);
|
|
|
1671
|
|
|
1672 if (value == NULL) {
|
|
|
1673 for (i = 0; i < var->len; i++) {
|
|
|
1674 var->data[i] = ngx_tolower(var->data[i]);
|
|
|
1675 }
|
|
|
1676
|
|
|
1677 vv = ngx_http_get_variable(r, var);
|
|
|
1678
|
|
|
1679 if (vv == NULL) {
|
|
|
1680 return NGX_HTTP_SSI_ERROR;
|
|
|
1681 }
|
|
|
1682
|
|
122
|
1683 if (!vv->not_found) {
|
|
|
1684 text.data = vv->data;
|
|
|
1685 text.len = vv->len;
|
|
|
1686 value = &text;
|
|
102
|
1687 }
|
|
50
|
1688 }
|
|
46
|
1689
|
|
102
|
1690 if (value == NULL) {
|
|
48
|
1691 value = params[NGX_HTTP_SSI_ECHO_DEFAULT];
|
|
|
1692
|
|
|
1693 if (value == NULL) {
|
|
|
1694 value = &ngx_http_ssi_none;
|
|
|
1695
|
|
|
1696 } else if (value->len == 0) {
|
|
|
1697 return NGX_OK;
|
|
|
1698 }
|
|
|
1699
|
|
|
1700 } else {
|
|
|
1701 if (value->len == 0) {
|
|
|
1702 return NGX_OK;
|
|
|
1703 }
|
|
|
1704 }
|
|
|
1705
|
|
|
1706 b = ngx_calloc_buf(r->pool);
|
|
|
1707 if (b == NULL) {
|
|
|
1708 return NGX_HTTP_SSI_ERROR;
|
|
|
1709 }
|
|
|
1710
|
|
|
1711 cl = ngx_alloc_chain_link(r->pool);
|
|
|
1712 if (cl == NULL) {
|
|
46
|
1713 return NGX_HTTP_SSI_ERROR;
|
|
|
1714 }
|
|
|
1715
|
|
|
1716 b->memory = 1;
|
|
|
1717 b->pos = value->data;
|
|
|
1718 b->last = value->data + value->len;
|
|
|
1719
|
|
|
1720 cl->buf = b;
|
|
|
1721 cl->next = NULL;
|
|
|
1722 *ctx->last_out = cl;
|
|
|
1723 ctx->last_out = &cl->next;
|
|
|
1724
|
|
|
1725 return NGX_OK;
|
|
|
1726 }
|
|
|
1727
|
|
|
1728
|
|
58
|
1729 static ngx_int_t
|
|
|
1730 ngx_http_ssi_config(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
|
1731 ngx_str_t **params)
|
|
|
1732 {
|
|
|
1733 ngx_str_t *value;
|
|
|
1734
|
|
|
1735 value = params[NGX_HTTP_SSI_CONFIG_TIMEFMT];
|
|
|
1736
|
|
|
1737 if (value) {
|
|
138
|
1738 ctx->timefmt.len = value->len;
|
|
|
1739 ctx->timefmt.data = ngx_palloc(r->pool, value->len + 1);
|
|
|
1740 if (ctx->timefmt.data == NULL) {
|
|
|
1741 return NGX_HTTP_SSI_ERROR;
|
|
|
1742 }
|
|
|
1743
|
|
|
1744 ngx_cpystrn(ctx->timefmt.data, value->data, value->len + 1);
|
|
58
|
1745 }
|
|
|
1746
|
|
96
|
1747 value = params[NGX_HTTP_SSI_CONFIG_ERRMSG];
|
|
|
1748
|
|
|
1749 if (value) {
|
|
|
1750 ctx->errmsg = *value;
|
|
|
1751 }
|
|
|
1752
|
|
58
|
1753 return NGX_OK;
|
|
|
1754 }
|
|
|
1755
|
|
|
1756
|
|
|
1757 static ngx_int_t
|
|
102
|
1758 ngx_http_ssi_set(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
58
|
1759 ngx_str_t **params)
|
|
|
1760 {
|
|
102
|
1761 ngx_str_t *name, *value, *vv;
|
|
|
1762 ngx_http_ssi_var_t *var;
|
|
|
1763 ngx_http_ssi_ctx_t *mctx;
|
|
|
1764
|
|
|
1765 mctx = ngx_http_get_module_ctx(r->main, ngx_http_ssi_filter_module);
|
|
|
1766
|
|
|
1767 if (mctx->variables.elts == NULL) {
|
|
|
1768 if (ngx_array_init(&mctx->variables, r->pool, 4,
|
|
|
1769 sizeof(ngx_http_ssi_var_t)) != NGX_OK)
|
|
|
1770 {
|
|
58
|
1771 return NGX_HTTP_SSI_ERROR;
|
|
|
1772 }
|
|
|
1773 }
|
|
|
1774
|
|
102
|
1775 name = params[NGX_HTTP_SSI_SET_VAR];
|
|
|
1776 value = params[NGX_HTTP_SSI_SET_VALUE];
|
|
|
1777
|
|
|
1778 if (ngx_http_ssi_evaluate_string(r, ctx, value, 0) != NGX_OK) {
|
|
58
|
1779 return NGX_HTTP_SSI_ERROR;
|
|
|
1780 }
|
|
|
1781
|
|
102
|
1782 vv = ngx_http_ssi_get_variable(r, name);
|
|
|
1783
|
|
|
1784 if (vv) {
|
|
|
1785 *vv = *value;
|
|
|
1786 return NGX_OK;
|
|
|
1787 }
|
|
|
1788
|
|
|
1789 var = ngx_array_push(&mctx->variables);
|
|
|
1790 if (var == NULL) {
|
|
|
1791 return NGX_HTTP_SSI_ERROR;
|
|
|
1792 }
|
|
|
1793
|
|
|
1794 var->name = *name;
|
|
|
1795 var->value = *value;
|
|
|
1796
|
|
|
1797 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1798 "set: \"%V\"=\"%V\"", name, value);
|
|
|
1799
|
|
58
|
1800 return NGX_OK;
|
|
|
1801 }
|
|
|
1802
|
|
|
1803
|
|
|
1804 static ngx_int_t
|
|
|
1805 ngx_http_ssi_if(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
|
1806 ngx_str_t **params)
|
|
|
1807 {
|
|
102
|
1808 u_char *p, *last;
|
|
|
1809 ngx_str_t *expr, left, right;
|
|
|
1810 ngx_int_t rc;
|
|
|
1811 ngx_uint_t negative, noregex;
|
|
100
|
1812 #if (NGX_PCRE)
|
|
102
|
1813 ngx_str_t err;
|
|
|
1814 ngx_regex_t *regex;
|
|
|
1815 u_char errstr[NGX_MAX_CONF_ERRSTR];
|
|
100
|
1816 #endif
|
|
58
|
1817
|
|
|
1818 expr = params[NGX_HTTP_SSI_IF_EXPR];
|
|
|
1819
|
|
102
|
1820 left.data = expr->data;
|
|
100
|
1821 last = expr->data + expr->len;
|
|
|
1822
|
|
102
|
1823 for (p = left.data; p < last; p++) {
|
|
100
|
1824 if (*p >= 'A' && *p <= 'Z') {
|
|
|
1825 *p |= 0x20;
|
|
|
1826 continue;
|
|
|
1827 }
|
|
58
|
1828
|
|
102
|
1829 if ((*p >= 'a' && *p <= 'z')
|
|
|
1830 || (*p >= '0' && *p <= '9')
|
|
122
|
1831 || *p == '$' || *p == '{' || *p == '}' || *p == '_'
|
|
|
1832 || *p == '"' || *p == '\'')
|
|
102
|
1833 {
|
|
100
|
1834 continue;
|
|
|
1835 }
|
|
|
1836
|
|
|
1837 break;
|
|
|
1838 }
|
|
|
1839
|
|
102
|
1840 left.len = p - left.data;
|
|
100
|
1841
|
|
|
1842 while (p < last && *p == ' ') {
|
|
|
1843 p++;
|
|
58
|
1844 }
|
|
|
1845
|
|
102
|
1846 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1847 "left: \"%V\"", &left);
|
|
|
1848
|
|
|
1849 if (ngx_http_ssi_evaluate_string(r, ctx, &left, 0) != NGX_OK) {
|
|
58
|
1850 return NGX_HTTP_SSI_ERROR;
|
|
|
1851 }
|
|
|
1852
|
|
102
|
1853 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1854 "evaluted left: \"%V\"", &left);
|
|
|
1855
|
|
100
|
1856 if (p == last) {
|
|
102
|
1857 if (left.len) {
|
|
100
|
1858 ctx->output = 1;
|
|
|
1859
|
|
|
1860 } else {
|
|
|
1861 ctx->output = 0;
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 return NGX_OK;
|
|
|
1865 }
|
|
|
1866
|
|
|
1867 if (p < last && *p == '=') {
|
|
|
1868 negative = 0;
|
|
|
1869 p++;
|
|
|
1870
|
|
|
1871 } else if (p + 1 < last && *p == '!' && *(p + 1) == '=') {
|
|
|
1872 negative = 1;
|
|
|
1873 p += 2;
|
|
|
1874
|
|
|
1875 } else {
|
|
|
1876 goto invalid_expression;
|
|
|
1877 }
|
|
|
1878
|
|
|
1879 while (p < last && *p == ' ') {
|
|
|
1880 p++;
|
|
|
1881 }
|
|
|
1882
|
|
|
1883 if (p < last && *p == '/') {
|
|
|
1884 if (*(last - 1) != '/') {
|
|
|
1885 goto invalid_expression;
|
|
|
1886 }
|
|
|
1887
|
|
|
1888 noregex = 0;
|
|
|
1889 last--;
|
|
|
1890 p++;
|
|
|
1891
|
|
|
1892 } else {
|
|
|
1893 noregex = 1;
|
|
|
1894 }
|
|
|
1895
|
|
|
1896 right.len = last - p;
|
|
|
1897 right.data = p;
|
|
|
1898
|
|
102
|
1899 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1900 "right: \"%V\"", &right);
|
|
|
1901
|
|
|
1902 if (ngx_http_ssi_evaluate_string(r, ctx, &right, 0) != NGX_OK) {
|
|
|
1903 return NGX_HTTP_SSI_ERROR;
|
|
100
|
1904 }
|
|
|
1905
|
|
102
|
1906 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1907 "evaluted right: \"%V\"", &right);
|
|
100
|
1908
|
|
|
1909 if (noregex) {
|
|
|
1910 if (left.len != right.len) {
|
|
|
1911 rc = -1;
|
|
|
1912
|
|
|
1913 } else {
|
|
|
1914 rc = ngx_strncmp(left.data, right.data, right.len);
|
|
|
1915 }
|
|
|
1916
|
|
|
1917 } else {
|
|
|
1918 #if (NGX_PCRE)
|
|
|
1919 err.len = NGX_MAX_CONF_ERRSTR;
|
|
|
1920 err.data = errstr;
|
|
|
1921
|
|
|
1922 right.data[right.len] = '\0';
|
|
|
1923
|
|
|
1924 regex = ngx_regex_compile(&right, 0, r->pool, &err);
|
|
|
1925
|
|
|
1926 if (regex == NULL) {
|
|
|
1927 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%s", err.data);
|
|
|
1928 return NGX_HTTP_SSI_ERROR;
|
|
|
1929 }
|
|
|
1930
|
|
|
1931 rc = ngx_regex_exec(regex, &left, NULL, 0);
|
|
|
1932
|
|
|
1933 if (rc != NGX_REGEX_NO_MATCHED && rc < 0) {
|
|
|
1934 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
1935 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"",
|
|
|
1936 rc, &left, &right);
|
|
|
1937 return NGX_HTTP_SSI_ERROR;
|
|
|
1938 }
|
|
|
1939 #else
|
|
|
1940 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
1941 "the using of the regex \"%V\" in SSI "
|
|
|
1942 "requires PCRE library", &right);
|
|
|
1943
|
|
|
1944 return NGX_HTTP_SSI_ERROR;
|
|
|
1945 #endif
|
|
|
1946 }
|
|
|
1947
|
|
|
1948 if ((rc == 0 && !negative) || (rc != 0 && negative)) {
|
|
58
|
1949 ctx->output = 1;
|
|
|
1950
|
|
|
1951 } else {
|
|
|
1952 ctx->output = 0;
|
|
|
1953 }
|
|
|
1954
|
|
|
1955 return NGX_OK;
|
|
100
|
1956
|
|
|
1957 invalid_expression:
|
|
|
1958
|
|
|
1959 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1960 "invalid expression in \"%V\"", expr);
|
|
|
1961
|
|
|
1962 return NGX_HTTP_SSI_ERROR;
|
|
58
|
1963 }
|
|
|
1964
|
|
|
1965
|
|
|
1966 static ngx_int_t
|
|
|
1967 ngx_http_ssi_else(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
|
1968 ngx_str_t **params)
|
|
|
1969 {
|
|
|
1970 ctx->output = !ctx->output;
|
|
|
1971
|
|
|
1972 return NGX_OK;
|
|
|
1973 }
|
|
|
1974
|
|
|
1975
|
|
|
1976 static ngx_int_t
|
|
|
1977 ngx_http_ssi_endif(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
|
|
|
1978 ngx_str_t **params)
|
|
|
1979 {
|
|
|
1980 ctx->output = 1;
|
|
|
1981
|
|
|
1982 return NGX_OK;
|
|
|
1983 }
|
|
|
1984
|
|
|
1985
|
|
122
|
1986 static ngx_int_t
|
|
|
1987 ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r,
|
|
|
1988 ngx_http_variable_value_t *v, uintptr_t gmt)
|
|
58
|
1989 {
|
|
122
|
1990 ngx_http_ssi_ctx_t *ctx;
|
|
|
1991 ngx_time_t *tp;
|
|
|
1992 struct tm tm;
|
|
|
1993 char buf[NGX_HTTP_SSI_DATE_LEN];
|
|
|
1994
|
|
126
|
1995 v->valid = 1;
|
|
122
|
1996 v->no_cachable = 0;
|
|
|
1997 v->not_found = 0;
|
|
58
|
1998
|
|
112
|
1999 tp = ngx_timeofday();
|
|
|
2000
|
|
58
|
2001 ctx = ngx_http_get_module_ctx(r, ngx_http_ssi_filter_module);
|
|
|
2002
|
|
|
2003 if (ctx->timefmt.len == sizeof("%s") - 1
|
|
|
2004 && ctx->timefmt.data[0] == '%' && ctx->timefmt.data[1] == 's')
|
|
|
2005 {
|
|
122
|
2006 v->data = ngx_palloc(r->pool, NGX_TIME_T_LEN);
|
|
|
2007 if (v->data == NULL) {
|
|
|
2008 return NGX_ERROR;
|
|
58
|
2009 }
|
|
|
2010
|
|
122
|
2011 v->len = ngx_sprintf(v->data, "%T", tp->sec + (gmt ? 0 : tp->gmtoff))
|
|
|
2012 - v->data;
|
|
|
2013 return NGX_OK;
|
|
58
|
2014 }
|
|
|
2015
|
|
|
2016 if (gmt) {
|
|
112
|
2017 ngx_libc_gmtime(tp->sec, &tm);
|
|
58
|
2018 } else {
|
|
112
|
2019 ngx_libc_localtime(tp->sec, &tm);
|
|
58
|
2020 }
|
|
|
2021
|
|
122
|
2022 v->len = strftime(buf, NGX_HTTP_SSI_DATE_LEN,
|
|
|
2023 (char *) ctx->timefmt.data, &tm);
|
|
|
2024 if (v->len == 0) {
|
|
|
2025 return NGX_ERROR;
|
|
58
|
2026 }
|
|
|
2027
|
|
122
|
2028 v->data = ngx_palloc(r->pool, v->len);
|
|
|
2029 if (v->data == NULL) {
|
|
|
2030 return NGX_ERROR;
|
|
58
|
2031 }
|
|
|
2032
|
|
122
|
2033 ngx_memcpy(v->data, buf, v->len);
|
|
|
2034
|
|
|
2035 return NGX_OK;
|
|
58
|
2036 }
|
|
|
2037
|
|
|
2038
|
|
76
|
2039 static char *
|
|
|
2040 ngx_http_ssi_types(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2041 {
|
|
|
2042 ngx_http_ssi_conf_t *scf = conf;
|
|
|
2043
|
|
|
2044 ngx_str_t *value, *type;
|
|
|
2045 ngx_uint_t i;
|
|
|
2046
|
|
|
2047 if (scf->types == NULL) {
|
|
|
2048 scf->types = ngx_array_create(cf->pool, 4, sizeof(ngx_str_t));
|
|
|
2049 if (scf->types == NULL) {
|
|
|
2050 return NGX_CONF_ERROR;
|
|
|
2051 }
|
|
|
2052
|
|
|
2053 type = ngx_array_push(scf->types);
|
|
|
2054 if (type == NULL) {
|
|
|
2055 return NGX_CONF_ERROR;
|
|
|
2056 }
|
|
|
2057
|
|
|
2058 type->len = sizeof("text/html") - 1;
|
|
|
2059 type->data = (u_char *) "text/html";
|
|
|
2060 }
|
|
|
2061
|
|
|
2062 value = cf->args->elts;
|
|
|
2063
|
|
|
2064 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
2065
|
|
|
2066 if (ngx_strcmp(value[i].data, "text/html") == 0) {
|
|
|
2067 continue;
|
|
|
2068 }
|
|
|
2069
|
|
|
2070 type = ngx_array_push(scf->types);
|
|
|
2071 if (type == NULL) {
|
|
|
2072 return NGX_CONF_ERROR;
|
|
|
2073 }
|
|
|
2074
|
|
|
2075 type->len = value[i].len;
|
|
|
2076
|
|
|
2077 type->data = ngx_palloc(cf->pool, type->len + 1);
|
|
|
2078 if (type->data == NULL) {
|
|
|
2079 return NGX_CONF_ERROR;
|
|
|
2080 }
|
|
|
2081
|
|
|
2082 ngx_cpystrn(type->data, value[i].data, type->len + 1);
|
|
|
2083 }
|
|
|
2084
|
|
|
2085 return NGX_CONF_OK;
|
|
|
2086 }
|
|
|
2087
|
|
|
2088
|
|
58
|
2089 static ngx_int_t
|
|
|
2090 ngx_http_ssi_add_variables(ngx_conf_t *cf)
|
|
|
2091 {
|
|
|
2092 ngx_http_variable_t *var, *v;
|
|
|
2093
|
|
|
2094 for (v = ngx_http_ssi_vars; v->name.len; v++) {
|
|
|
2095 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2096 if (var == NULL) {
|
|
|
2097 return NGX_ERROR;
|
|
|
2098 }
|
|
|
2099
|
|
|
2100 var->handler = v->handler;
|
|
|
2101 var->data = v->data;
|
|
|
2102 }
|
|
|
2103
|
|
126
|
2104 return NGX_OK;
|
|
58
|
2105 }
|
|
|
2106
|
|
|
2107
|
|
46
|
2108 static void *
|
|
|
2109 ngx_http_ssi_create_conf(ngx_conf_t *cf)
|
|
|
2110 {
|
|
|
2111 ngx_http_ssi_conf_t *conf;
|
|
|
2112
|
|
48
|
2113 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ssi_conf_t));
|
|
|
2114 if (conf == NULL) {
|
|
46
|
2115 return NGX_CONF_ERROR;
|
|
|
2116 }
|
|
|
2117
|
|
76
|
2118 /*
|
|
|
2119 * set by ngx_pcalloc():
|
|
|
2120 *
|
|
|
2121 * conf->types = NULL;
|
|
|
2122 */
|
|
|
2123
|
|
46
|
2124 conf->enable = NGX_CONF_UNSET;
|
|
|
2125 conf->silent_errors = NGX_CONF_UNSET;
|
|
58
|
2126 conf->ignore_recycled_buffers = NGX_CONF_UNSET;
|
|
46
|
2127
|
|
|
2128 conf->min_file_chunk = NGX_CONF_UNSET_SIZE;
|
|
|
2129 conf->value_len = NGX_CONF_UNSET_SIZE;
|
|
|
2130
|
|
|
2131 return conf;
|
|
|
2132 }
|
|
|
2133
|
|
|
2134
|
|
|
2135 static char *
|
|
|
2136 ngx_http_ssi_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
2137 {
|
|
|
2138 ngx_http_ssi_conf_t *prev = parent;
|
|
|
2139 ngx_http_ssi_conf_t *conf = child;
|
|
|
2140
|
|
76
|
2141 ngx_str_t *type;
|
|
|
2142
|
|
46
|
2143 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
|
2144 ngx_conf_merge_value(conf->silent_errors, prev->silent_errors, 0);
|
|
58
|
2145 ngx_conf_merge_value(conf->ignore_recycled_buffers,
|
|
|
2146 prev->ignore_recycled_buffers, 0);
|
|
46
|
2147
|
|
|
2148 ngx_conf_merge_size_value(conf->min_file_chunk, prev->min_file_chunk, 1024);
|
|
|
2149 ngx_conf_merge_size_value(conf->value_len, prev->value_len, 256);
|
|
|
2150
|
|
76
|
2151 if (conf->types == NULL) {
|
|
|
2152 if (prev->types == NULL) {
|
|
|
2153 conf->types = ngx_array_create(cf->pool, 1, sizeof(ngx_str_t));
|
|
|
2154 if (conf->types == NULL) {
|
|
|
2155 return NGX_CONF_ERROR;
|
|
|
2156 }
|
|
|
2157
|
|
|
2158 type = ngx_array_push(conf->types);
|
|
|
2159 if (type == NULL) {
|
|
|
2160 return NGX_CONF_ERROR;
|
|
|
2161 }
|
|
|
2162
|
|
|
2163 type->len = sizeof("text/html") - 1;
|
|
|
2164 type->data = (u_char *) "text/html";
|
|
|
2165
|
|
|
2166 } else {
|
|
|
2167 conf->types = prev->types;
|
|
|
2168 }
|
|
|
2169 }
|
|
|
2170
|
|
46
|
2171 return NGX_CONF_OK;
|
|
|
2172 }
|
|
|
2173
|
|
|
2174
|
|
|
2175 static ngx_int_t
|
|
|
2176 ngx_http_ssi_filter_init(ngx_cycle_t *cycle)
|
|
|
2177 {
|
|
|
2178 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
2179 ngx_http_top_header_filter = ngx_http_ssi_header_filter;
|
|
|
2180
|
|
|
2181 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
2182 ngx_http_top_body_filter = ngx_http_ssi_body_filter;
|
|
|
2183
|
|
|
2184 return NGX_OK;
|
|
|
2185 }
|
