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