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394
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11 #include <libxml/parser.h>
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12 #include <libxml/tree.h>
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13 #include <libxslt/xslt.h>
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14 #include <libxslt/xsltInternals.h>
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15 #include <libxslt/transform.h>
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16 #include <libxslt/xsltutils.h>
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17
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427
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18 #if (NGX_HAVE_EXSLT)
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19 #include <libexslt/exslt.h>
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20 #endif
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21
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394
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22
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23 #ifndef NGX_HTTP_XSLT_REUSE_DTD
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24 #define NGX_HTTP_XSLT_REUSE_DTD 1
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25 #endif
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26
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27
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28 typedef struct {
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397
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29 u_char *name;
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30 void *data;
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31 } ngx_http_xslt_file_t;
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32
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33
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34 typedef struct {
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35 ngx_array_t dtd_files; /* ngx_http_xslt_file_t */
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36 ngx_array_t sheet_files; /* ngx_http_xslt_file_t */
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37 } ngx_http_xslt_filter_main_conf_t;
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38
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39
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40 typedef struct {
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394
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41 xsltStylesheetPtr stylesheet;
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473
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42 ngx_array_t params; /* ngx_http_complex_value_t */
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394
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43 } ngx_http_xslt_sheet_t;
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44
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45
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46 typedef struct {
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47 xmlDtdPtr dtd;
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397
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48 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */
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49 ngx_hash_t types;
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50 ngx_array_t *types_keys;
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51 } ngx_http_xslt_filter_loc_conf_t;
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394
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52
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53
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54 typedef struct {
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55 xmlDocPtr doc;
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56 xmlParserCtxtPtr ctxt;
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57 ngx_http_request_t *request;
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58 ngx_array_t params;
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397
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59
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60 ngx_uint_t done; /* unsigned done:1; */
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394
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61 } ngx_http_xslt_filter_ctx_t;
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62
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63
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64 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r,
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65 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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66 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r,
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67 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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68
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69
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70 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
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71 const xmlChar *externalId, const xmlChar *systemId);
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72 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...);
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73
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74
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75 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
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76 ngx_http_xslt_filter_ctx_t *ctx);
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77 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r,
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78 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params);
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397
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79 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s);
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80 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s);
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394
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81 static void ngx_http_xslt_cleanup(void *data);
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82
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83 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd,
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84 void *conf);
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85 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd,
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86 void *conf);
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397
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87 static void ngx_http_xslt_cleanup_dtd(void *data);
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394
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88 static void ngx_http_xslt_cleanup_stylesheet(void *data);
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397
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89 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf);
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394
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90 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf);
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91 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent,
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92 void *child);
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93 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf);
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406
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94 static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle);
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394
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95
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96
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97 ngx_str_t ngx_http_xslt_default_types[] = {
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98 ngx_string("text/xml"),
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99 ngx_null_string
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100 };
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101
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102
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103 static ngx_command_t ngx_http_xslt_filter_commands[] = {
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104
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105 { ngx_string("xml_entities"),
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397
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106 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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394
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107 ngx_http_xslt_entities,
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108 NGX_HTTP_LOC_CONF_OFFSET,
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109 0,
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110 NULL },
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111
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112 { ngx_string("xslt_stylesheet"),
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397
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113 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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394
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114 ngx_http_xslt_stylesheet,
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115 NGX_HTTP_LOC_CONF_OFFSET,
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116 0,
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117 NULL },
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118
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119 { ngx_string("xslt_types"),
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120 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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121 ngx_http_types_slot,
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122 NGX_HTTP_LOC_CONF_OFFSET,
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123 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys),
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124 &ngx_http_xslt_default_types[0] },
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125
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126 ngx_null_command
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127 };
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128
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129
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130 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = {
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131 NULL, /* preconfiguration */
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132 ngx_http_xslt_filter_init, /* postconfiguration */
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133
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397
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134 ngx_http_xslt_filter_create_main_conf, /* create main configuration */
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135 NULL, /* init main configuration */
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136
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137 NULL, /* create server configuration */
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138 NULL, /* merge server configuration */
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139
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140 ngx_http_xslt_filter_create_conf, /* create location configuration */
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141 ngx_http_xslt_filter_merge_conf /* merge location configuration */
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142 };
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143
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144
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145 ngx_module_t ngx_http_xslt_filter_module = {
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146 NGX_MODULE_V1,
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147 &ngx_http_xslt_filter_module_ctx, /* module context */
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148 ngx_http_xslt_filter_commands, /* module directives */
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149 NGX_HTTP_MODULE, /* module type */
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150 NULL, /* init master */
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151 NULL, /* init module */
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152 NULL, /* init process */
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153 NULL, /* init thread */
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154 NULL, /* exit thread */
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518
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155 ngx_http_xslt_filter_exit, /* exit process */
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406
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156 ngx_http_xslt_filter_exit, /* exit master */
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394
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157 NGX_MODULE_V1_PADDING
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158 };
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159
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160
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161 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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162 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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163
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164
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165 static ngx_int_t
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166 ngx_http_xslt_header_filter(ngx_http_request_t *r)
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167 {
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168 ngx_http_xslt_filter_ctx_t *ctx;
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169 ngx_http_xslt_filter_loc_conf_t *conf;
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170
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171 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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172 "xslt filter header");
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173
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174 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
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175 return ngx_http_next_header_filter(r);
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176 }
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177
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178 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
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179
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180 if (conf->sheets.nelts == 0
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397
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181 || ngx_http_test_content_type(r, &conf->types) == NULL)
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394
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182 {
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183 return ngx_http_next_header_filter(r);
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184 }
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185
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186 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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187
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188 if (ctx) {
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189 return ngx_http_next_header_filter(r);
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190 }
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191
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192 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t));
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193 if (ctx == NULL) {
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194 return NGX_ERROR;
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195 }
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196
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197 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module);
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198
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199 r->main_filter_need_in_memory = 1;
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200
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201 return NGX_OK;
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202 }
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203
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204
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205 static ngx_int_t
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206 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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207 {
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518
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208 int wellFormed;
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209 ngx_chain_t *cl;
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210 ngx_http_xslt_filter_ctx_t *ctx;
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211
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212 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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213 "xslt filter body");
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214
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215 if (in == NULL) {
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216 return ngx_http_next_body_filter(r, in);
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217 }
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218
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219 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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220
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221 if (ctx == NULL || ctx->done) {
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222 return ngx_http_next_body_filter(r, in);
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223 }
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224
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225 for (cl = in; cl; cl = cl->next) {
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226
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227 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) {
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228
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229 if (ctx->ctxt->myDoc) {
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230
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231 #if (NGX_HTTP_XSLT_REUSE_DTD)
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232 ctx->ctxt->myDoc->extSubset = NULL;
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233 #endif
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234 xmlFreeDoc(ctx->ctxt->myDoc);
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235 }
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236
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237 xmlFreeParserCtxt(ctx->ctxt);
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238
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239 return ngx_http_xslt_send(r, ctx, NULL);
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240 }
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241
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242 if (cl->buf->last_buf || cl->buf->last_in_chain) {
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243
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244 ctx->doc = ctx->ctxt->myDoc;
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245
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246 #if (NGX_HTTP_XSLT_REUSE_DTD)
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247 ctx->doc->extSubset = NULL;
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248 #endif
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249
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250 wellFormed = ctx->ctxt->wellFormed;
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251
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252 xmlFreeParserCtxt(ctx->ctxt);
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253
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254 if (wellFormed) {
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255 return ngx_http_xslt_send(r, ctx,
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256 ngx_http_xslt_apply_stylesheet(r, ctx));
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257 }
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258
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259 xmlFreeDoc(ctx->doc);
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260
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261 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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262 "not well formed XML document");
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263
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264 return ngx_http_xslt_send(r, ctx, NULL);
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265 }
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266 }
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267
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268 return NGX_OK;
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269 }
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270
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271
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272 static ngx_int_t
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273 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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274 ngx_buf_t *b)
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275 {
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276 ngx_int_t rc;
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277 ngx_chain_t out;
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278 ngx_pool_cleanup_t *cln;
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279
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280 ctx->done = 1;
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281
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282 if (b == NULL) {
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283 return ngx_http_filter_finalize_request(r, NULL,
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493
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284 NGX_HTTP_INTERNAL_SERVER_ERROR);
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394
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285 }
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286
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287 cln = ngx_pool_cleanup_add(r->pool, 0);
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288
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289 if (cln == NULL) {
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290 ngx_free(b->pos);
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291 return ngx_http_filter_finalize_request(r, NULL,
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292 NGX_HTTP_INTERNAL_SERVER_ERROR);
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293 }
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294
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295 if (r == r->main) {
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296 r->headers_out.content_length_n = b->last - b->pos;
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297
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397
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298 if (r->headers_out.content_length) {
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299 r->headers_out.content_length->hash = 0;
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300 r->headers_out.content_length = NULL;
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301 }
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394
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302
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303 ngx_http_clear_last_modified(r);
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394
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304 }
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305
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306 rc = ngx_http_next_header_filter(r);
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307
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308 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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309 ngx_free(b->pos);
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310 return rc;
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311 }
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312
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313 cln->handler = ngx_http_xslt_cleanup;
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314 cln->data = b->pos;
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315
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316 out.buf = b;
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317 out.next = NULL;
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318
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319 return ngx_http_next_body_filter(r, &out);
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320 }
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321
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322
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323 static ngx_int_t
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324 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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325 ngx_buf_t *b)
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326 {
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599
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327 int err;
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328 xmlParserCtxtPtr ctxt;
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329
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330 if (ctx->ctxt == NULL) {
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331
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332 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
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333 if (ctxt == NULL) {
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334 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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335 "xmlCreatePushParserCtxt() failed");
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336 return NGX_ERROR;
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337 }
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338
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599
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339 ctxt->sax->externalSubset = ngx_http_xslt_sax_external_subset;
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340 ctxt->sax->setDocumentLocator = NULL;
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341 ctxt->sax->warning = NULL;
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342 ctxt->sax->error = ngx_http_xslt_sax_error;
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343 ctxt->sax->fatalError = ngx_http_xslt_sax_error;
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344 ctxt->sax->_private = ctx;
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394
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345 ctxt->replaceEntities = 1;
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346 ctxt->loadsubset = 1;
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347
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348 ctx->ctxt = ctxt;
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349 ctx->request = r;
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350 }
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351
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352 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, (int) (b->last - b->pos),
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353 (b->last_buf) || (b->last_in_chain));
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394
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354
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355 if (err == 0) {
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356 b->pos = b->last;
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357 return NGX_OK;
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358 }
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359
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360 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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361 "xmlParseChunk() failed, error:%d", err);
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362
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363 return NGX_ERROR;
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364 }
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365
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366
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367 static void
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368 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
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369 const xmlChar *externalId, const xmlChar *systemId)
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370 {
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599
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371 xmlParserCtxtPtr ctxt = data;
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394
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372
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397
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373 xmlDocPtr doc;
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374 xmlDtdPtr dtd;
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375 ngx_http_request_t *r;
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599
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376 ngx_http_xslt_filter_ctx_t *ctx;
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397
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377 ngx_http_xslt_filter_loc_conf_t *conf;
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394
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378
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599
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379 ctx = ctxt->sax->_private;
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394
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380 r = ctx->request;
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381
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382 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
|
383
|
|
|
384 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
385 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"",
|
|
|
386 name ? name : (xmlChar *) "",
|
|
|
387 externalId ? externalId : (xmlChar *) "",
|
|
|
388 systemId ? systemId : (xmlChar *) "");
|
|
|
389
|
|
599
|
390 doc = ctxt->myDoc;
|
|
394
|
391
|
|
|
392 #if (NGX_HTTP_XSLT_REUSE_DTD)
|
|
|
393
|
|
|
394 dtd = conf->dtd;
|
|
|
395
|
|
|
396 #else
|
|
|
397
|
|
|
398 dtd = xmlCopyDtd(conf->dtd);
|
|
|
399 if (dtd == NULL) {
|
|
|
400 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
401 "xmlCopyDtd() failed");
|
|
|
402 return;
|
|
|
403 }
|
|
|
404
|
|
|
405 if (doc->children == NULL) {
|
|
|
406 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd);
|
|
|
407
|
|
|
408 } else {
|
|
|
409 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd);
|
|
|
410 }
|
|
|
411
|
|
|
412 #endif
|
|
|
413
|
|
|
414 doc->extSubset = dtd;
|
|
|
415 }
|
|
|
416
|
|
|
417
|
|
|
418 static void ngx_cdecl
|
|
|
419 ngx_http_xslt_sax_error(void *data, const char *msg, ...)
|
|
|
420 {
|
|
599
|
421 xmlParserCtxtPtr ctxt = data;
|
|
394
|
422
|
|
599
|
423 size_t n;
|
|
|
424 va_list args;
|
|
|
425 ngx_http_xslt_filter_ctx_t *ctx;
|
|
|
426 u_char buf[NGX_MAX_ERROR_STR];
|
|
|
427
|
|
|
428 ctx = ctxt->sax->_private;
|
|
394
|
429
|
|
|
430 buf[0] = '\0';
|
|
|
431
|
|
|
432 va_start(args, msg);
|
|
|
433 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args);
|
|
|
434 va_end(args);
|
|
|
435
|
|
|
436 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ }
|
|
|
437
|
|
|
438 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
520
|
439 "libxml2 error: \"%*s\"", n + 1, buf);
|
|
394
|
440 }
|
|
|
441
|
|
|
442
|
|
|
443 static ngx_buf_t *
|
|
|
444 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
|
|
|
445 ngx_http_xslt_filter_ctx_t *ctx)
|
|
|
446 {
|
|
397
|
447 int len, rc, doc_type;
|
|
|
448 u_char *type, *encoding;
|
|
|
449 ngx_buf_t *b;
|
|
|
450 ngx_uint_t i;
|
|
|
451 xmlChar *buf;
|
|
|
452 xmlDocPtr doc, res;
|
|
|
453 ngx_http_xslt_sheet_t *sheet;
|
|
|
454 ngx_http_xslt_filter_loc_conf_t *conf;
|
|
394
|
455
|
|
|
456 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
|
457 sheet = conf->sheets.elts;
|
|
|
458 doc = ctx->doc;
|
|
|
459
|
|
|
460 /* preallocate array for 4 params */
|
|
|
461
|
|
|
462 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *))
|
|
|
463 != NGX_OK)
|
|
|
464 {
|
|
|
465 xmlFreeDoc(doc);
|
|
|
466 return NULL;
|
|
|
467 }
|
|
|
468
|
|
|
469 for (i = 0; i < conf->sheets.nelts; i++) {
|
|
|
470
|
|
|
471 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) {
|
|
|
472 xmlFreeDoc(doc);
|
|
|
473 return NULL;
|
|
|
474 }
|
|
|
475
|
|
|
476 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts);
|
|
|
477
|
|
|
478 xmlFreeDoc(doc);
|
|
|
479
|
|
|
480 if (res == NULL) {
|
|
|
481 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
482 "xsltApplyStylesheet() failed");
|
|
|
483 return NULL;
|
|
|
484 }
|
|
|
485
|
|
|
486 doc = res;
|
|
|
487
|
|
|
488 /* reset array elements */
|
|
|
489 ctx->params.nelts = 0;
|
|
|
490 }
|
|
|
491
|
|
397
|
492 /* there must be at least one stylesheet */
|
|
|
493
|
|
|
494 if (r == r->main) {
|
|
|
495 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet);
|
|
394
|
496
|
|
397
|
497 } else {
|
|
|
498 type = NULL;
|
|
|
499 }
|
|
|
500
|
|
|
501 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet);
|
|
|
502 doc_type = doc->type;
|
|
|
503
|
|
|
504 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
505 "xslt filter type: %d t:%s e:%s",
|
|
|
506 doc_type, type ? type : (u_char *) "(null)",
|
|
|
507 encoding ? encoding : (u_char *) "(null)");
|
|
394
|
508
|
|
|
509 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet);
|
|
|
510
|
|
|
511 xmlFreeDoc(doc);
|
|
|
512
|
|
|
513 if (rc != 0) {
|
|
|
514 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
515 "xsltSaveResultToString() failed");
|
|
|
516 return NULL;
|
|
|
517 }
|
|
|
518
|
|
|
519 if (len == 0) {
|
|
|
520 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
521 "xsltSaveResultToString() returned zero-length result");
|
|
|
522 return NULL;
|
|
|
523 }
|
|
|
524
|
|
|
525 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
526 if (b == NULL) {
|
|
|
527 ngx_free(buf);
|
|
|
528 return NULL;
|
|
|
529 }
|
|
|
530
|
|
|
531 b->pos = buf;
|
|
|
532 b->last = buf + len;
|
|
|
533 b->memory = 1;
|
|
|
534
|
|
397
|
535 if (encoding) {
|
|
|
536 r->headers_out.charset.len = ngx_strlen(encoding);
|
|
|
537 r->headers_out.charset.data = encoding;
|
|
|
538 }
|
|
|
539
|
|
|
540 if (r != r->main) {
|
|
|
541 return b;
|
|
|
542 }
|
|
|
543
|
|
505
|
544 b->last_buf = 1;
|
|
|
545
|
|
397
|
546 if (type) {
|
|
|
547 len = ngx_strlen(type);
|
|
|
548
|
|
|
549 r->headers_out.content_type_len = len;
|
|
|
550 r->headers_out.content_type.len = len;
|
|
|
551 r->headers_out.content_type.data = type;
|
|
|
552
|
|
|
553 } else if (doc_type == XML_HTML_DOCUMENT_NODE) {
|
|
|
554
|
|
|
555 r->headers_out.content_type_len = sizeof("text/html") - 1;
|
|
583
|
556 ngx_str_set(&r->headers_out.content_type, "text/html");
|
|
397
|
557 }
|
|
|
558
|
|
503
|
559 r->headers_out.content_type_lowcase = NULL;
|
|
|
560
|
|
394
|
561 return b;
|
|
|
562 }
|
|
|
563
|
|
|
564
|
|
|
565 static ngx_int_t
|
|
|
566 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
|
|
|
567 ngx_array_t *params)
|
|
|
568 {
|
|
473
|
569 u_char *p, *last, *value, *dst, *src, **s;
|
|
|
570 size_t len;
|
|
|
571 ngx_uint_t i;
|
|
|
572 ngx_str_t string;
|
|
|
573 ngx_http_complex_value_t *param;
|
|
394
|
574
|
|
|
575 param = params->elts;
|
|
|
576
|
|
|
577 for (i = 0; i < params->nelts; i++) {
|
|
|
578
|
|
473
|
579 if (ngx_http_complex_value(r, ¶m[i], &string) != NGX_OK) {
|
|
394
|
580 return NGX_ERROR;
|
|
|
581 }
|
|
|
582
|
|
|
583 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
584 "xslt filter param: \"%s\"", string.data);
|
|
|
585
|
|
|
586 p = string.data;
|
|
473
|
587 last = string.data + string.len - 1;
|
|
394
|
588
|
|
|
589 while (p && *p) {
|
|
|
590
|
|
|
591 value = p;
|
|
|
592 p = (u_char *) ngx_strchr(p, '=');
|
|
|
593 if (p == NULL) {
|
|
|
594 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
595 "invalid libxslt parameter \"%s\"", value);
|
|
|
596 return NGX_ERROR;
|
|
|
597 }
|
|
|
598 *p++ = '\0';
|
|
|
599
|
|
|
600 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
601 "xslt filter param name: \"%s\"", value);
|
|
|
602
|
|
|
603 s = ngx_array_push(&ctx->params);
|
|
|
604 if (s == NULL) {
|
|
|
605 return NGX_ERROR;
|
|
|
606 }
|
|
|
607
|
|
|
608 *s = value;
|
|
|
609
|
|
|
610 value = p;
|
|
|
611 p = (u_char *) ngx_strchr(p, ':');
|
|
|
612
|
|
|
613 if (p) {
|
|
|
614 len = p - value;
|
|
|
615 *p++ = '\0';
|
|
|
616
|
|
|
617 } else {
|
|
|
618 len = last - value;
|
|
|
619 }
|
|
|
620
|
|
|
621 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
622 "xslt filter param value: \"%s\"", value);
|
|
|
623
|
|
|
624 dst = value;
|
|
|
625 src = value;
|
|
|
626
|
|
|
627 ngx_unescape_uri(&dst, &src, len, 0);
|
|
|
628
|
|
|
629 *dst = '\0';
|
|
|
630
|
|
|
631 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
632 "xslt filter param unescaped: \"%s\"", value);
|
|
|
633
|
|
|
634 s = ngx_array_push(&ctx->params);
|
|
|
635 if (s == NULL) {
|
|
|
636 return NGX_ERROR;
|
|
|
637 }
|
|
|
638
|
|
|
639 *s = value;
|
|
|
640 }
|
|
|
641 }
|
|
|
642
|
|
|
643 s = ngx_array_push(&ctx->params);
|
|
|
644 if (s == NULL) {
|
|
|
645 return NGX_ERROR;
|
|
|
646 }
|
|
|
647
|
|
|
648 *s = NULL;
|
|
|
649
|
|
|
650 return NGX_OK;
|
|
|
651 }
|
|
|
652
|
|
|
653
|
|
397
|
654 static u_char *
|
|
|
655 ngx_http_xslt_content_type(xsltStylesheetPtr s)
|
|
|
656 {
|
|
|
657 u_char *type;
|
|
|
658
|
|
|
659 if (s->mediaType) {
|
|
|
660 return s->mediaType;
|
|
|
661 }
|
|
|
662
|
|
|
663 for (s = s->imports; s; s = s->next) {
|
|
|
664
|
|
|
665 type = ngx_http_xslt_content_type(s);
|
|
|
666
|
|
|
667 if (type) {
|
|
|
668 return type;
|
|
|
669 }
|
|
|
670 }
|
|
|
671
|
|
|
672 return NULL;
|
|
|
673 }
|
|
|
674
|
|
|
675
|
|
|
676 static u_char *
|
|
|
677 ngx_http_xslt_encoding(xsltStylesheetPtr s)
|
|
|
678 {
|
|
|
679 u_char *encoding;
|
|
|
680
|
|
|
681 if (s->encoding) {
|
|
|
682 return s->encoding;
|
|
|
683 }
|
|
|
684
|
|
|
685 for (s = s->imports; s; s = s->next) {
|
|
|
686
|
|
|
687 encoding = ngx_http_xslt_encoding(s);
|
|
|
688
|
|
|
689 if (encoding) {
|
|
|
690 return encoding;
|
|
|
691 }
|
|
|
692 }
|
|
|
693
|
|
|
694 return NULL;
|
|
|
695 }
|
|
|
696
|
|
|
697
|
|
394
|
698 static void
|
|
|
699 ngx_http_xslt_cleanup(void *data)
|
|
|
700 {
|
|
|
701 ngx_free(data);
|
|
|
702 }
|
|
|
703
|
|
|
704
|
|
|
705 static char *
|
|
|
706 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
707 {
|
|
397
|
708 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
|
394
|
709
|
|
397
|
710 ngx_str_t *value;
|
|
|
711 ngx_uint_t i;
|
|
|
712 ngx_pool_cleanup_t *cln;
|
|
|
713 ngx_http_xslt_file_t *file;
|
|
|
714 ngx_http_xslt_filter_main_conf_t *xmcf;
|
|
394
|
715
|
|
|
716 if (xlcf->dtd) {
|
|
|
717 return "is duplicate";
|
|
|
718 }
|
|
|
719
|
|
|
720 value = cf->args->elts;
|
|
|
721
|
|
397
|
722 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
|
723
|
|
|
724 file = xmcf->dtd_files.elts;
|
|
|
725 for (i = 0; i < xmcf->dtd_files.nelts; i++) {
|
|
|
726 if (ngx_strcmp(file[i].name, &value[1].data) == 0) {
|
|
|
727 xlcf->dtd = file[i].data;
|
|
|
728 return NGX_CONF_OK;
|
|
|
729 }
|
|
|
730 }
|
|
|
731
|
|
|
732 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
|
733 if (cln == NULL) {
|
|
|
734 return NGX_CONF_ERROR;
|
|
|
735 }
|
|
|
736
|
|
394
|
737 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data);
|
|
|
738
|
|
|
739 if (xlcf->dtd == NULL) {
|
|
|
740 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed");
|
|
|
741 return NGX_CONF_ERROR;
|
|
|
742 }
|
|
|
743
|
|
397
|
744 cln->handler = ngx_http_xslt_cleanup_dtd;
|
|
|
745 cln->data = xlcf->dtd;
|
|
|
746
|
|
|
747 file = ngx_array_push(&xmcf->dtd_files);
|
|
|
748 if (file == NULL) {
|
|
|
749 return NGX_CONF_ERROR;
|
|
|
750 }
|
|
|
751
|
|
|
752 file->name = value[1].data;
|
|
|
753 file->data = xlcf->dtd;
|
|
|
754
|
|
394
|
755 return NGX_CONF_OK;
|
|
|
756 }
|
|
|
757
|
|
|
758
|
|
|
759
|
|
|
760 static char *
|
|
|
761 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
762 {
|
|
397
|
763 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
|
394
|
764
|
|
397
|
765 ngx_str_t *value;
|
|
|
766 ngx_uint_t i, n;
|
|
|
767 ngx_pool_cleanup_t *cln;
|
|
|
768 ngx_http_xslt_file_t *file;
|
|
|
769 ngx_http_xslt_sheet_t *sheet;
|
|
473
|
770 ngx_http_complex_value_t *param;
|
|
|
771 ngx_http_compile_complex_value_t ccv;
|
|
397
|
772 ngx_http_xslt_filter_main_conf_t *xmcf;
|
|
394
|
773
|
|
|
774 value = cf->args->elts;
|
|
|
775
|
|
|
776 if (xlcf->sheets.elts == NULL) {
|
|
|
777 if (ngx_array_init(&xlcf->sheets, cf->pool, 1,
|
|
|
778 sizeof(ngx_http_xslt_sheet_t))
|
|
|
779 != NGX_OK)
|
|
|
780 {
|
|
|
781 return NGX_CONF_ERROR;
|
|
|
782 }
|
|
|
783 }
|
|
|
784
|
|
|
785 sheet = ngx_array_push(&xlcf->sheets);
|
|
|
786 if (sheet == NULL) {
|
|
|
787 return NGX_CONF_ERROR;
|
|
|
788 }
|
|
|
789
|
|
|
790 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t));
|
|
|
791
|
|
|
792 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) {
|
|
|
793 return NGX_CONF_ERROR;
|
|
|
794 }
|
|
|
795
|
|
397
|
796 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
|
797
|
|
|
798 file = xmcf->sheet_files.elts;
|
|
|
799 for (i = 0; i < xmcf->sheet_files.nelts; i++) {
|
|
|
800 if (ngx_strcmp(file[i].name, &value[1].data) == 0) {
|
|
|
801 sheet->stylesheet = file[i].data;
|
|
|
802 goto found;
|
|
|
803 }
|
|
|
804 }
|
|
|
805
|
|
394
|
806 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
|
807 if (cln == NULL) {
|
|
|
808 return NGX_CONF_ERROR;
|
|
|
809 }
|
|
|
810
|
|
|
811 sheet->stylesheet = xsltParseStylesheetFile(value[1].data);
|
|
|
812 if (sheet->stylesheet == NULL) {
|
|
|
813 ngx_conf_log_error(NGX_LOG_ERR, cf, 0,
|
|
|
814 "xsltParseStylesheetFile(\"%s\") failed",
|
|
|
815 value[1].data);
|
|
|
816 return NGX_CONF_ERROR;
|
|
|
817 }
|
|
|
818
|
|
|
819 cln->handler = ngx_http_xslt_cleanup_stylesheet;
|
|
|
820 cln->data = sheet->stylesheet;
|
|
|
821
|
|
397
|
822 file = ngx_array_push(&xmcf->sheet_files);
|
|
|
823 if (file == NULL) {
|
|
|
824 return NGX_CONF_ERROR;
|
|
|
825 }
|
|
|
826
|
|
|
827 file->name = value[1].data;
|
|
|
828 file->data = sheet->stylesheet;
|
|
|
829
|
|
|
830 found:
|
|
|
831
|
|
394
|
832 n = cf->args->nelts;
|
|
|
833
|
|
|
834 if (n == 2) {
|
|
|
835 return NGX_CONF_OK;
|
|
|
836 }
|
|
|
837
|
|
|
838 if (ngx_array_init(&sheet->params, cf->pool, n - 2,
|
|
473
|
839 sizeof(ngx_http_complex_value_t))
|
|
394
|
840 != NGX_OK)
|
|
|
841 {
|
|
|
842 return NGX_CONF_ERROR;
|
|
|
843 }
|
|
|
844
|
|
|
845 for (i = 2; i < n; i++) {
|
|
|
846
|
|
|
847 param = ngx_array_push(&sheet->params);
|
|
|
848 if (param == NULL) {
|
|
|
849 return NGX_CONF_ERROR;
|
|
|
850 }
|
|
|
851
|
|
473
|
852 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
394
|
853
|
|
473
|
854 ccv.cf = cf;
|
|
|
855 ccv.value = &value[i];
|
|
|
856 ccv.complex_value = param;
|
|
|
857 ccv.zero = 1;
|
|
394
|
858
|
|
473
|
859 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
394
|
860 return NGX_CONF_ERROR;
|
|
|
861 }
|
|
|
862 }
|
|
|
863
|
|
|
864 return NGX_CONF_OK;
|
|
|
865 }
|
|
|
866
|
|
|
867
|
|
|
868 static void
|
|
397
|
869 ngx_http_xslt_cleanup_dtd(void *data)
|
|
|
870 {
|
|
|
871 xmlFreeDtd(data);
|
|
|
872 }
|
|
|
873
|
|
|
874
|
|
|
875 static void
|
|
394
|
876 ngx_http_xslt_cleanup_stylesheet(void *data)
|
|
|
877 {
|
|
397
|
878 xsltFreeStylesheet(data);
|
|
394
|
879 }
|
|
|
880
|
|
|
881
|
|
397
|
882 static void *
|
|
|
883 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf)
|
|
|
884 {
|
|
|
885 ngx_http_xslt_filter_main_conf_t *conf;
|
|
|
886
|
|
|
887 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t));
|
|
|
888 if (conf == NULL) {
|
|
505
|
889 return NULL;
|
|
397
|
890 }
|
|
|
891
|
|
|
892 if (ngx_array_init(&conf->dtd_files, cf->pool, 1,
|
|
|
893 sizeof(ngx_http_xslt_file_t))
|
|
|
894 != NGX_OK)
|
|
|
895 {
|
|
|
896 return NULL;
|
|
|
897 }
|
|
|
898
|
|
|
899 if (ngx_array_init(&conf->sheet_files, cf->pool, 1,
|
|
|
900 sizeof(ngx_http_xslt_file_t))
|
|
|
901 != NGX_OK)
|
|
|
902 {
|
|
|
903 return NULL;
|
|
|
904 }
|
|
|
905
|
|
|
906 return conf;
|
|
|
907 }
|
|
|
908
|
|
394
|
909
|
|
|
910 static void *
|
|
|
911 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf)
|
|
|
912 {
|
|
397
|
913 ngx_http_xslt_filter_loc_conf_t *conf;
|
|
394
|
914
|
|
397
|
915 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t));
|
|
394
|
916 if (conf == NULL) {
|
|
505
|
917 return NULL;
|
|
394
|
918 }
|
|
|
919
|
|
|
920 /*
|
|
|
921 * set by ngx_pcalloc():
|
|
|
922 *
|
|
397
|
923 * conf->dtd = NULL;
|
|
|
924 * conf->sheets = { NULL };
|
|
|
925 * conf->types = { NULL };
|
|
|
926 * conf->types_keys = NULL;
|
|
394
|
927 */
|
|
|
928
|
|
|
929 return conf;
|
|
|
930 }
|
|
|
931
|
|
|
932
|
|
|
933 static char *
|
|
|
934 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
935 {
|
|
397
|
936 ngx_http_xslt_filter_loc_conf_t *prev = parent;
|
|
|
937 ngx_http_xslt_filter_loc_conf_t *conf = child;
|
|
394
|
938
|
|
|
939 if (conf->dtd == NULL) {
|
|
|
940 conf->dtd = prev->dtd;
|
|
|
941 }
|
|
|
942
|
|
|
943 if (conf->sheets.nelts == 0) {
|
|
|
944 conf->sheets = prev->sheets;
|
|
|
945 }
|
|
|
946
|
|
566
|
947 if (ngx_http_merge_types(cf, &conf->types_keys, &conf->types,
|
|
|
948 &prev->types_keys, &prev->types,
|
|
397
|
949 ngx_http_xslt_default_types)
|
|
394
|
950 != NGX_OK)
|
|
|
951 {
|
|
|
952 return NGX_CONF_ERROR;
|
|
|
953 }
|
|
|
954
|
|
|
955 return NGX_CONF_OK;
|
|
|
956 }
|
|
|
957
|
|
|
958
|
|
|
959 static ngx_int_t
|
|
|
960 ngx_http_xslt_filter_init(ngx_conf_t *cf)
|
|
|
961 {
|
|
|
962 xmlInitParser();
|
|
|
963
|
|
427
|
964 #if (NGX_HAVE_EXSLT)
|
|
|
965 exsltRegisterAll();
|
|
|
966 #endif
|
|
|
967
|
|
394
|
968 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
969 ngx_http_top_header_filter = ngx_http_xslt_header_filter;
|
|
|
970
|
|
|
971 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
972 ngx_http_top_body_filter = ngx_http_xslt_body_filter;
|
|
|
973
|
|
|
974 return NGX_OK;
|
|
|
975 }
|
|
|
976
|
|
|
977
|
|
|
978 static void
|
|
|
979 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle)
|
|
|
980 {
|
|
|
981 xsltCleanupGlobals();
|
|
|
982 xmlCleanupParser();
|
|
|
983 }
|
