392
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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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18
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19 #ifndef NGX_HTTP_XSLT_REUSE_DTD
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20 #define NGX_HTTP_XSLT_REUSE_DTD 1
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21 #endif
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22
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23
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24 typedef struct {
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411
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25 u_char *name;
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26 void *data;
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27 } ngx_http_xslt_file_t;
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28
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29
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30 typedef struct {
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31 ngx_array_t dtd_files; /* ngx_http_xslt_file_t */
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32 ngx_array_t sheet_files; /* ngx_http_xslt_file_t */
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33 } ngx_http_xslt_filter_main_conf_t;
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34
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35
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36 typedef struct {
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37 ngx_array_t *lengths;
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38 ngx_array_t *values;
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39 } ngx_http_xslt_param_t;
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40
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41
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42 typedef struct {
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43 xsltStylesheetPtr stylesheet;
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44 ngx_array_t params; /* ngx_http_xslt_param_t */
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45 } ngx_http_xslt_sheet_t;
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46
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47
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48 typedef struct {
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49 xmlDtdPtr dtd;
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50 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */
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51 ngx_hash_t types;
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52 ngx_array_t *types_keys;
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53 } ngx_http_xslt_filter_loc_conf_t;
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54
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55
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56 typedef struct {
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57 xmlDocPtr doc;
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58 xmlParserCtxtPtr ctxt;
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59 xmlSAXHandler *sax;
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60 ngx_http_request_t *request;
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61 ngx_array_t params;
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62
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63 ngx_uint_t done; /* unsigned done:1; */
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64 } ngx_http_xslt_filter_ctx_t;
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65
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66
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67 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r,
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68 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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69 static ngx_int_t ngx_http_xslt_filter_internal_error(ngx_http_request_t *r);
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70 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r,
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71 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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72
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73
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74 static void ngx_http_xslt_sax_start_document(void *data);
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75 static void ngx_http_xslt_sax_end_document(void *data);
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76 static void ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name,
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77 const xmlChar *externalId, const xmlChar *systemId);
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78 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
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79 const xmlChar *externalId, const xmlChar *systemId);
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80 static void ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name,
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81 int type, const xmlChar *publicId, const xmlChar *systemId,
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82 xmlChar *content);
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83 static void ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem,
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84 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue,
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85 xmlEnumerationPtr tree);
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86 static void ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name,
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87 int type, xmlElementContentPtr content);
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88 static void ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name,
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89 const xmlChar *publicId, const xmlChar *systemId);
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90 static void ngx_http_xslt_sax_unparsed_entity_decl(void *data,
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91 const xmlChar *name, const xmlChar *publicId, const xmlChar *systemId,
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92 const xmlChar *notationName);
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93 static void ngx_http_xslt_sax_start_element(void *data,
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94 const xmlChar *localname, const xmlChar *prefix, const xmlChar *URI,
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95 int nb_namespaces, const xmlChar **namespaces, int nb_attributes,
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96 int nb_defaulted, const xmlChar **attributes);
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97 static void ngx_http_xslt_sax_end_element(void *data,
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98 const xmlChar * localname ATTRIBUTE_UNUSED,
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99 const xmlChar * prefix ATTRIBUTE_UNUSED,
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100 const xmlChar * URI ATTRIBUTE_UNUSED);
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101 static void ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len);
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102 static void ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p,
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103 int len);
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104 static xmlEntityPtr ngx_http_xslt_sax_get_entity(void *data,
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105 const xmlChar *name);
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106 static xmlEntityPtr ngx_http_xslt_sax_get_parameter_entity(void *data,
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107 const xmlChar *name);
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108 static xmlParserInputPtr ngx_http_xslt_sax_resolve_entity(void *data,
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109 const xmlChar *publicId, const xmlChar *systemId);
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110 static void ngx_http_xslt_sax_reference(void *data, const xmlChar *name);
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111 static void ngx_http_xslt_sax_comment(void *data, const xmlChar *value);
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112 static void ngx_http_xslt_sax_processing_instruction(void *data,
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113 const xmlChar *target, const xmlChar *pidata);
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114 static int ngx_http_xslt_sax_is_standalone(void *data);
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115 static int ngx_http_xslt_sax_has_internal_subset(void *data);
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116 static int ngx_http_xslt_sax_has_external_subset(void *data);
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117 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...);
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118
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119
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120 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
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121 ngx_http_xslt_filter_ctx_t *ctx);
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122 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r,
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123 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params);
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124 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s);
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125 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s);
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126 static void ngx_http_xslt_cleanup(void *data);
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127
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128 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd,
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129 void *conf);
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130 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd,
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131 void *conf);
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132 static void ngx_http_xslt_cleanup_dtd(void *data);
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133 static void ngx_http_xslt_cleanup_stylesheet(void *data);
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411
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134 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf);
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135 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf);
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136 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent,
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137 void *child);
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138 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf);
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421
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139 static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle);
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140
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141
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142 ngx_str_t ngx_http_xslt_default_types[] = {
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143 ngx_string("text/xml"),
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144 ngx_null_string
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145 };
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146
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147
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148 static ngx_command_t ngx_http_xslt_filter_commands[] = {
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149
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150 { ngx_string("xml_entities"),
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151 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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152 ngx_http_xslt_entities,
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153 NGX_HTTP_LOC_CONF_OFFSET,
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154 0,
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155 NULL },
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156
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157 { ngx_string("xslt_stylesheet"),
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158 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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159 ngx_http_xslt_stylesheet,
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160 NGX_HTTP_LOC_CONF_OFFSET,
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161 0,
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162 NULL },
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163
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164 { ngx_string("xslt_types"),
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165 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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166 ngx_http_types_slot,
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167 NGX_HTTP_LOC_CONF_OFFSET,
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168 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys),
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169 &ngx_http_xslt_default_types[0] },
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170
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171 ngx_null_command
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172 };
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173
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174
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175 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = {
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176 NULL, /* preconfiguration */
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177 ngx_http_xslt_filter_init, /* postconfiguration */
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178
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179 ngx_http_xslt_filter_create_main_conf, /* create main configuration */
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180 NULL, /* init main configuration */
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181
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182 NULL, /* create server configuration */
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183 NULL, /* merge server configuration */
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184
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185 ngx_http_xslt_filter_create_conf, /* create location configuration */
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186 ngx_http_xslt_filter_merge_conf /* merge location configuration */
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187 };
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188
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189
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190 ngx_module_t ngx_http_xslt_filter_module = {
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191 NGX_MODULE_V1,
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192 &ngx_http_xslt_filter_module_ctx, /* module context */
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193 ngx_http_xslt_filter_commands, /* module directives */
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194 NGX_HTTP_MODULE, /* module type */
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195 NULL, /* init master */
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196 NULL, /* init module */
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197 NULL, /* init process */
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198 NULL, /* init thread */
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199 NULL, /* exit thread */
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200 ngx_http_xslt_filter_exit, /* exit process */
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201 ngx_http_xslt_filter_exit, /* exit master */
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202 NGX_MODULE_V1_PADDING
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203 };
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204
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205
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206 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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207 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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208
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209
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210 static ngx_int_t
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211 ngx_http_xslt_header_filter(ngx_http_request_t *r)
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212 {
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213 ngx_http_xslt_filter_ctx_t *ctx;
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214 ngx_http_xslt_filter_loc_conf_t *conf;
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215
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216 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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217 "xslt filter header");
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218
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219 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
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220 return ngx_http_next_header_filter(r);
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221 }
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222
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223 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
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224
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225 if (conf->sheets.nelts == 0
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226 || ngx_http_test_content_type(r, &conf->types) == NULL)
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227 {
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228 return ngx_http_next_header_filter(r);
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229 }
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230
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231 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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232
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233 if (ctx) {
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234 return ngx_http_next_header_filter(r);
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235 }
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236
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237 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t));
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238 if (ctx == NULL) {
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239 return NGX_ERROR;
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240 }
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241
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242 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module);
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243
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244 r->main_filter_need_in_memory = 1;
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245
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246 return NGX_OK;
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247 }
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248
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249
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250 static ngx_int_t
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251 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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252 {
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253 ngx_chain_t *cl;
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254 ngx_http_xslt_filter_ctx_t *ctx;
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255
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256 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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257 "xslt filter body");
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258
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259 if (in == NULL) {
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260 return ngx_http_next_body_filter(r, in);
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261 }
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262
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263 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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264
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265 if (ctx == NULL || ctx->done) {
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266 return ngx_http_next_body_filter(r, in);
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267 }
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268
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269 for (cl = in; cl; cl = cl->next) {
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270
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271 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) {
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272
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273 if (ctx->ctxt->myDoc){
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274
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275 #if (NGX_HTTP_XSLT_REUSE_DTD)
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276 ctx->ctxt->myDoc->extSubset = NULL;
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277 #endif
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278 xmlFreeDoc(ctx->ctxt->myDoc);
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279 }
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280
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281 xmlFreeParserCtxt(ctx->ctxt);
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282
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283 return ngx_http_xslt_send(r, ctx, NULL);
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284 }
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285
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286 if (cl->buf->last_buf) {
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287
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288 ctx->doc = ctx->ctxt->myDoc;
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289
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290 #if (NGX_HTTP_XSLT_REUSE_DTD)
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291 ctx->doc->extSubset = NULL;
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292 #endif
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293
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294 xmlFreeParserCtxt(ctx->ctxt);
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295
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296 if (ctx->ctxt->wellFormed) {
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297 return ngx_http_xslt_send(r, ctx,
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298 ngx_http_xslt_apply_stylesheet(r, ctx));
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299 }
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300
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301 xmlFreeDoc(ctx->doc);
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302
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303 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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304 "not well formed XML document");
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305
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306 return ngx_http_xslt_send(r, ctx, NULL);
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307 }
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308 }
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309
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310 return NGX_OK;
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311 }
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312
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313
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314 static ngx_int_t
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315 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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316 ngx_buf_t *b)
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317 {
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318 ngx_int_t rc;
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319 ngx_chain_t out;
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320 ngx_pool_cleanup_t *cln;
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321
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322 ctx->done = 1;
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323
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324 if (b == NULL) {
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325 return ngx_http_xslt_filter_internal_error(r);
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326 }
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327
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328 cln = ngx_pool_cleanup_add(r->pool, 0);
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329
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330 if (cln == NULL) {
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331 ngx_free(b->pos);
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332 return ngx_http_special_response_handler(r,
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333 NGX_HTTP_INTERNAL_SERVER_ERROR);
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334 }
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335
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336 if (r == r->main) {
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337 r->headers_out.content_length_n = b->last - b->pos;
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338
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411
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339 if (r->headers_out.content_length) {
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340 r->headers_out.content_length->hash = 0;
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341 r->headers_out.content_length = NULL;
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342 }
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343
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411
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344 ngx_http_clear_last_modified(r);
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392
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345 }
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346
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347 rc = ngx_http_next_header_filter(r);
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348
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349 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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350 ngx_free(b->pos);
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351 return rc;
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352 }
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353
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354 cln->handler = ngx_http_xslt_cleanup;
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355 cln->data = b->pos;
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356
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357 out.buf = b;
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358 out.next = NULL;
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359
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360 return ngx_http_next_body_filter(r, &out);
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361 }
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362
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363
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364 static ngx_int_t
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365 ngx_http_xslt_filter_internal_error(ngx_http_request_t *r)
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366 {
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367 ngx_int_t rc;
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368
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369 /* clear the modules contexts */
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370 ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module);
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371
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372 rc = ngx_http_special_response_handler(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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373
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374 /* NGX_ERROR resets any pending data */
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375
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376 return (rc == NGX_OK) ? NGX_ERROR : rc;
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377 }
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378
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379
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380 static ngx_int_t
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381 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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382 ngx_buf_t *b)
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383 {
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384 int err;
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385 xmlSAXHandler *sax;
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386 xmlParserCtxtPtr ctxt;
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387
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388 if (ctx->ctxt == NULL) {
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389
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390 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
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391 if (ctxt == NULL) {
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392 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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393 "xmlCreatePushParserCtxt() failed");
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394 return NGX_ERROR;
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395 }
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396
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397 ctx->sax = ngx_palloc(r->pool, sizeof(xmlSAXHandler));
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398 if (ctx->sax == NULL) {
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399 return NGX_ERROR;
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400 }
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401
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402 sax = ctxt->sax;
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403
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404 ngx_memcpy(ctx->sax, sax, sizeof(xmlSAXHandler));
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405
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406 sax->startDocument = ngx_http_xslt_sax_start_document;
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407 sax->endDocument = ngx_http_xslt_sax_end_document;
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408
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409 sax->internalSubset = ngx_http_xslt_sax_internal_subset;
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410 sax->externalSubset = ngx_http_xslt_sax_external_subset;
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411 sax->entityDecl = ngx_http_xslt_sax_entity_decl;
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412 sax->attributeDecl = ngx_http_xslt_sax_attribute_decl;
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413 sax->elementDecl = ngx_http_xslt_sax_element_decl;
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414 sax->notationDecl = ngx_http_xslt_sax_notation_decl;
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415 sax->unparsedEntityDecl = ngx_http_xslt_sax_unparsed_entity_decl;
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416 sax->setDocumentLocator = NULL;
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417
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418 sax->startElementNs = ngx_http_xslt_sax_start_element;
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419 sax->endElementNs = ngx_http_xslt_sax_end_element;
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420
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421 sax->characters = ngx_http_xslt_sax_characters;
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422 sax->ignorableWhitespace = ngx_http_xslt_sax_characters;
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423 sax->cdataBlock = ngx_http_xslt_sax_cdata_block;
|
|
424 sax->getEntity = ngx_http_xslt_sax_get_entity;
|
|
425 sax->resolveEntity = ngx_http_xslt_sax_resolve_entity;
|
|
426 sax->getParameterEntity = ngx_http_xslt_sax_get_parameter_entity;
|
|
427 sax->reference = ngx_http_xslt_sax_reference;
|
|
428 sax->comment = ngx_http_xslt_sax_comment;
|
|
429 sax->processingInstruction = ngx_http_xslt_sax_processing_instruction;
|
|
430
|
|
431 sax->isStandalone = ngx_http_xslt_sax_is_standalone;
|
|
432 sax->hasInternalSubset = ngx_http_xslt_sax_has_internal_subset;
|
|
433 sax->hasExternalSubset = ngx_http_xslt_sax_has_external_subset;
|
|
434
|
|
435 sax->warning = NULL;
|
|
436 sax->error = ngx_http_xslt_sax_error;
|
|
437 sax->fatalError = ngx_http_xslt_sax_error;
|
|
438
|
|
439 ctxt->userData = ctx;
|
|
440
|
|
441 ctxt->replaceEntities = 1;
|
|
442 ctxt->loadsubset = 1;
|
|
443
|
|
444 ctx->ctxt = ctxt;
|
|
445 ctx->request = r;
|
|
446 }
|
|
447
|
|
448 err = xmlParseChunk(ctx->ctxt, (char *) b->pos,
|
|
449 (int) (b->last - b->pos), b->last_buf);
|
|
450
|
|
451 if (err == 0) {
|
|
452 b->pos = b->last;
|
|
453 return NGX_OK;
|
|
454 }
|
|
455
|
|
456 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
457 "xmlParseChunk() failed, error:%d", err);
|
|
458
|
|
459 return NGX_ERROR;
|
|
460 }
|
|
461
|
|
462
|
|
463 static void
|
|
464 ngx_http_xslt_sax_start_document(void *data)
|
|
465 {
|
|
466 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
467
|
|
468 ctx->sax->startDocument(ctx->ctxt);
|
|
469 }
|
|
470
|
|
471
|
|
472 static void
|
|
473 ngx_http_xslt_sax_end_document(void *data)
|
|
474 {
|
|
475 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
476
|
|
477 ctx->sax->endDocument(ctx->ctxt);
|
|
478 }
|
|
479
|
|
480
|
|
481 static void
|
|
482 ngx_http_xslt_sax_internal_subset(void *data, const xmlChar *name,
|
|
483 const xmlChar *externalId, const xmlChar *systemId)
|
|
484 {
|
|
485 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
486
|
|
487 ctx->sax->internalSubset(ctx->ctxt, name, externalId, systemId);
|
|
488 }
|
|
489
|
|
490
|
|
491 static void
|
|
492 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
|
|
493 const xmlChar *externalId, const xmlChar *systemId)
|
|
494 {
|
|
495 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
496
|
411
|
497 xmlDocPtr doc;
|
|
498 xmlDtdPtr dtd;
|
|
499 ngx_http_request_t *r;
|
|
500 ngx_http_xslt_filter_loc_conf_t *conf;
|
392
|
501
|
|
502 r = ctx->request;
|
|
503
|
|
504 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
505
|
|
506 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
507 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"",
|
|
508 name ? name : (xmlChar *) "",
|
|
509 externalId ? externalId : (xmlChar *) "",
|
|
510 systemId ? systemId : (xmlChar *) "");
|
|
511
|
|
512 doc = ctx->ctxt->myDoc;
|
|
513
|
|
514 #if (NGX_HTTP_XSLT_REUSE_DTD)
|
|
515
|
|
516 dtd = conf->dtd;
|
|
517
|
|
518 #else
|
|
519
|
|
520 dtd = xmlCopyDtd(conf->dtd);
|
|
521 if (dtd == NULL) {
|
|
522 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
523 "xmlCopyDtd() failed");
|
|
524 return;
|
|
525 }
|
|
526
|
|
527 if (doc->children == NULL) {
|
|
528 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd);
|
|
529
|
|
530 } else {
|
|
531 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd);
|
|
532 }
|
|
533
|
|
534 #endif
|
|
535
|
|
536 doc->extSubset = dtd;
|
|
537 }
|
|
538
|
|
539
|
|
540 static void
|
|
541 ngx_http_xslt_sax_entity_decl(void *data, const xmlChar *name, int type,
|
|
542 const xmlChar *publicId, const xmlChar *systemId, xmlChar *content)
|
|
543 {
|
|
544 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
545
|
|
546 ctx->sax->entityDecl(ctx->ctxt, name, type, publicId, systemId, content);
|
|
547 }
|
|
548
|
|
549
|
|
550 static void
|
|
551 ngx_http_xslt_sax_attribute_decl(void *data, const xmlChar *elem,
|
|
552 const xmlChar *fullname, int type, int def, const xmlChar *defaultValue,
|
|
553 xmlEnumerationPtr tree)
|
|
554 {
|
|
555 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
556
|
|
557 ctx->sax->attributeDecl(ctx->ctxt, elem, fullname, type, def, defaultValue,
|
|
558 tree);
|
|
559 }
|
|
560
|
|
561
|
|
562 static void
|
|
563 ngx_http_xslt_sax_element_decl(void *data, const xmlChar * name, int type,
|
|
564 xmlElementContentPtr content)
|
|
565 {
|
|
566 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
567
|
|
568 ctx->sax->elementDecl(ctx->ctxt, name, type, content);
|
|
569 }
|
|
570
|
|
571
|
|
572 static void
|
|
573 ngx_http_xslt_sax_notation_decl(void *data, const xmlChar *name,
|
|
574 const xmlChar *publicId, const xmlChar *systemId)
|
|
575 {
|
|
576 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
577
|
|
578 ctx->sax->notationDecl(ctx->ctxt, name, publicId, systemId);
|
|
579 }
|
|
580
|
|
581
|
|
582 static void
|
|
583 ngx_http_xslt_sax_unparsed_entity_decl(void *data, const xmlChar *name,
|
|
584 const xmlChar *publicId, const xmlChar *systemId,
|
|
585 const xmlChar *notationName)
|
|
586 {
|
|
587 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
588
|
|
589 ctx->sax->unparsedEntityDecl(ctx->ctxt, name, publicId, systemId,
|
|
590 notationName);
|
|
591 }
|
|
592
|
|
593
|
|
594 static void
|
|
595 ngx_http_xslt_sax_start_element(void *data, const xmlChar *localname,
|
|
596 const xmlChar *prefix, const xmlChar *URI, int nb_namespaces,
|
|
597 const xmlChar **namespaces, int nb_attributes, int nb_defaulted,
|
|
598 const xmlChar **attributes)
|
|
599 {
|
|
600 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
601
|
|
602 ctx->sax->startElementNs(ctx->ctxt, localname, prefix, URI, nb_namespaces,
|
|
603 namespaces, nb_attributes, nb_defaulted, attributes);
|
|
604 }
|
|
605
|
|
606
|
|
607 static void
|
|
608 ngx_http_xslt_sax_end_element(void *data,
|
|
609 const xmlChar * localname ATTRIBUTE_UNUSED,
|
|
610 const xmlChar * prefix ATTRIBUTE_UNUSED,
|
|
611 const xmlChar * URI ATTRIBUTE_UNUSED)
|
|
612 {
|
|
613 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
614
|
|
615 ctx->sax->endElementNs(ctx->ctxt, localname, prefix, URI);
|
|
616 }
|
|
617
|
|
618
|
|
619 static void
|
|
620 ngx_http_xslt_sax_characters(void *data, const xmlChar *p, int len)
|
|
621 {
|
|
622 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
623
|
|
624 ctx->sax->characters(ctx->ctxt, p, len);
|
|
625 }
|
|
626
|
|
627
|
|
628 static void
|
|
629 ngx_http_xslt_sax_cdata_block(void *data, const xmlChar *p, int len)
|
|
630 {
|
|
631 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
632
|
|
633 ctx->sax->cdataBlock(ctx->ctxt, p, len);
|
|
634 }
|
|
635
|
|
636
|
|
637 static xmlEntityPtr
|
|
638 ngx_http_xslt_sax_get_entity(void *data, const xmlChar *name)
|
|
639 {
|
|
640 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
641
|
|
642 return ctx->sax->getEntity(ctx->ctxt, name);
|
|
643 }
|
|
644
|
|
645
|
|
646 static xmlEntityPtr
|
|
647 ngx_http_xslt_sax_get_parameter_entity(void *data, const xmlChar *name)
|
|
648 {
|
|
649 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
650
|
|
651 return ctx->sax->getParameterEntity(ctx->ctxt, name);
|
|
652 }
|
|
653
|
|
654
|
|
655 static xmlParserInputPtr
|
|
656 ngx_http_xslt_sax_resolve_entity(void *data, const xmlChar *publicId,
|
|
657 const xmlChar *systemId)
|
|
658 {
|
|
659 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
660
|
|
661 return ctx->sax->resolveEntity(ctx->ctxt, publicId, systemId);
|
|
662 }
|
|
663
|
|
664
|
|
665 static void
|
|
666 ngx_http_xslt_sax_reference(void *data, const xmlChar *name)
|
|
667 {
|
|
668 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
669
|
|
670 ctx->sax->reference(ctx->ctxt, name);
|
|
671 }
|
|
672
|
|
673
|
|
674 static void
|
|
675 ngx_http_xslt_sax_comment(void *data, const xmlChar *value)
|
|
676 {
|
|
677 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
678
|
|
679 ctx->sax->comment(ctx->ctxt, value);
|
|
680 }
|
|
681
|
|
682
|
|
683 static void
|
|
684 ngx_http_xslt_sax_processing_instruction(void *data, const xmlChar *target,
|
|
685 const xmlChar *pidata)
|
|
686 {
|
|
687 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
688
|
|
689 ctx->sax->processingInstruction(ctx->ctxt, target, pidata);
|
|
690 }
|
|
691
|
|
692
|
|
693 static int
|
|
694 ngx_http_xslt_sax_is_standalone(void *data)
|
|
695 {
|
|
696 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
697
|
|
698 return ctx->sax->isStandalone(ctx->ctxt);
|
|
699 }
|
|
700
|
|
701
|
|
702 static int
|
|
703 ngx_http_xslt_sax_has_internal_subset(void *data)
|
|
704 {
|
|
705 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
706
|
|
707 return ctx->sax->hasInternalSubset(ctx->ctxt);
|
|
708 }
|
|
709
|
|
710
|
|
711 static int
|
|
712 ngx_http_xslt_sax_has_external_subset(void *data)
|
|
713 {
|
|
714 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
715
|
|
716 return ctx->sax->hasExternalSubset(ctx->ctxt);
|
|
717 }
|
|
718
|
|
719
|
|
720 static void ngx_cdecl
|
|
721 ngx_http_xslt_sax_error(void *data, const char *msg, ...)
|
|
722 {
|
|
723 ngx_http_xslt_filter_ctx_t *ctx = data;
|
|
724
|
|
725 size_t n;
|
|
726 va_list args;
|
|
727 u_char buf[NGX_MAX_ERROR_STR];
|
|
728
|
|
729 buf[0] = '\0';
|
|
730
|
|
731 va_start(args, msg);
|
|
732 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args);
|
|
733 va_end(args);
|
|
734
|
|
735 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ }
|
|
736
|
|
737 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
738 "libxml2 error: \"%*s\"", n, buf);
|
|
739 }
|
|
740
|
|
741
|
|
742 static ngx_buf_t *
|
|
743 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
|
|
744 ngx_http_xslt_filter_ctx_t *ctx)
|
|
745 {
|
411
|
746 int len, rc, doc_type;
|
|
747 u_char *type, *encoding;
|
|
748 ngx_buf_t *b;
|
|
749 ngx_uint_t i;
|
|
750 xmlChar *buf;
|
|
751 xmlDocPtr doc, res;
|
|
752 ngx_http_xslt_sheet_t *sheet;
|
|
753 ngx_http_xslt_filter_loc_conf_t *conf;
|
392
|
754
|
|
755 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
756 sheet = conf->sheets.elts;
|
|
757 doc = ctx->doc;
|
|
758
|
|
759 /* preallocate array for 4 params */
|
|
760
|
|
761 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *))
|
|
762 != NGX_OK)
|
|
763 {
|
|
764 xmlFreeDoc(doc);
|
|
765 return NULL;
|
|
766 }
|
|
767
|
|
768 for (i = 0; i < conf->sheets.nelts; i++) {
|
|
769
|
|
770 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) {
|
|
771 xmlFreeDoc(doc);
|
|
772 return NULL;
|
|
773 }
|
|
774
|
|
775 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts);
|
|
776
|
|
777 xmlFreeDoc(doc);
|
|
778
|
|
779 if (res == NULL) {
|
|
780 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
781 "xsltApplyStylesheet() failed");
|
|
782 return NULL;
|
|
783 }
|
|
784
|
|
785 doc = res;
|
|
786
|
|
787 /* reset array elements */
|
|
788 ctx->params.nelts = 0;
|
|
789 }
|
|
790
|
411
|
791 /* there must be at least one stylesheet */
|
|
792
|
|
793 if (r == r->main) {
|
|
794 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet);
|
392
|
795
|
411
|
796 } else {
|
|
797 type = NULL;
|
|
798 }
|
|
799
|
|
800 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet);
|
|
801 doc_type = doc->type;
|
|
802
|
|
803 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
804 "xslt filter type: %d t:%s e:%s",
|
|
805 doc_type, type ? type : (u_char *) "(null)",
|
|
806 encoding ? encoding : (u_char *) "(null)");
|
392
|
807
|
|
808 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet);
|
|
809
|
|
810 xmlFreeDoc(doc);
|
|
811
|
|
812 if (rc != 0) {
|
|
813 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
814 "xsltSaveResultToString() failed");
|
|
815 return NULL;
|
|
816 }
|
|
817
|
|
818 if (len == 0) {
|
|
819 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
820 "xsltSaveResultToString() returned zero-length result");
|
|
821 return NULL;
|
|
822 }
|
|
823
|
|
824 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
825 if (b == NULL) {
|
|
826 ngx_free(buf);
|
|
827 return NULL;
|
|
828 }
|
|
829
|
|
830 b->pos = buf;
|
|
831 b->last = buf + len;
|
|
832 b->memory = 1;
|
|
833 b->last_buf = 1;
|
|
834
|
411
|
835 if (encoding) {
|
|
836 r->headers_out.charset.len = ngx_strlen(encoding);
|
|
837 r->headers_out.charset.data = encoding;
|
|
838 }
|
|
839
|
|
840 if (r != r->main) {
|
|
841 return b;
|
|
842 }
|
|
843
|
|
844 if (type) {
|
|
845 len = ngx_strlen(type);
|
|
846
|
|
847 r->headers_out.content_type_len = len;
|
|
848 r->headers_out.content_type.len = len;
|
|
849 r->headers_out.content_type.data = type;
|
|
850
|
|
851 } else if (doc_type == XML_HTML_DOCUMENT_NODE) {
|
|
852
|
|
853 r->headers_out.content_type_len = sizeof("text/html") - 1;
|
|
854 r->headers_out.content_type.len = sizeof("text/html") - 1;
|
|
855 r->headers_out.content_type.data = (u_char *) "text/html";
|
|
856 }
|
|
857
|
392
|
858 return b;
|
|
859 }
|
|
860
|
|
861
|
|
862 static ngx_int_t
|
|
863 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
|
|
864 ngx_array_t *params)
|
|
865 {
|
|
866 u_char *p, *last, *value, *dst, *src, **s;
|
|
867 size_t len;
|
|
868 ngx_uint_t i;
|
|
869 ngx_str_t string;
|
|
870 ngx_http_xslt_param_t *param;
|
|
871
|
|
872 param = params->elts;
|
|
873
|
|
874 for (i = 0; i < params->nelts; i++) {
|
|
875
|
|
876 if (ngx_http_script_run(r, &string, param[i].lengths->elts, 1,
|
|
877 param[i].values->elts)
|
|
878 == NULL)
|
|
879 {
|
|
880 return NGX_ERROR;
|
|
881 }
|
|
882
|
|
883 last = string.data + string.len - 1;
|
|
884 *last = '\0';
|
|
885
|
|
886 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
887 "xslt filter param: \"%s\"", string.data);
|
|
888
|
|
889 p = string.data;
|
|
890
|
|
891 while (p && *p) {
|
|
892
|
|
893 value = p;
|
|
894 p = (u_char *) ngx_strchr(p, '=');
|
|
895 if (p == NULL) {
|
|
896 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
897 "invalid libxslt parameter \"%s\"", value);
|
|
898 return NGX_ERROR;
|
|
899 }
|
|
900 *p++ = '\0';
|
|
901
|
|
902 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
903 "xslt filter param name: \"%s\"", value);
|
|
904
|
|
905 s = ngx_array_push(&ctx->params);
|
|
906 if (s == NULL) {
|
|
907 return NGX_ERROR;
|
|
908 }
|
|
909
|
|
910 *s = value;
|
|
911
|
|
912 value = p;
|
|
913 p = (u_char *) ngx_strchr(p, ':');
|
|
914
|
|
915 if (p) {
|
|
916 len = p - value;
|
|
917 *p++ = '\0';
|
|
918
|
|
919 } else {
|
|
920 len = last - value;
|
|
921 }
|
|
922
|
|
923 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
924 "xslt filter param value: \"%s\"", value);
|
|
925
|
|
926 dst = value;
|
|
927 src = value;
|
|
928
|
|
929 ngx_unescape_uri(&dst, &src, len, 0);
|
|
930
|
|
931 *dst = '\0';
|
|
932
|
|
933 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
934 "xslt filter param unescaped: \"%s\"", value);
|
|
935
|
|
936 s = ngx_array_push(&ctx->params);
|
|
937 if (s == NULL) {
|
|
938 return NGX_ERROR;
|
|
939 }
|
|
940
|
|
941 *s = value;
|
|
942 }
|
|
943 }
|
|
944
|
|
945 s = ngx_array_push(&ctx->params);
|
|
946 if (s == NULL) {
|
|
947 return NGX_ERROR;
|
|
948 }
|
|
949
|
|
950 *s = NULL;
|
|
951
|
|
952 return NGX_OK;
|
|
953 }
|
|
954
|
|
955
|
411
|
956 static u_char *
|
|
957 ngx_http_xslt_content_type(xsltStylesheetPtr s)
|
|
958 {
|
|
959 u_char *type;
|
|
960
|
|
961 if (s->mediaType) {
|
|
962 return s->mediaType;
|
|
963 }
|
|
964
|
|
965 for (s = s->imports; s; s = s->next) {
|
|
966
|
|
967 type = ngx_http_xslt_content_type(s);
|
|
968
|
|
969 if (type) {
|
|
970 return type;
|
|
971 }
|
|
972 }
|
|
973
|
|
974 return NULL;
|
|
975 }
|
|
976
|
|
977
|
|
978 static u_char *
|
|
979 ngx_http_xslt_encoding(xsltStylesheetPtr s)
|
|
980 {
|
|
981 u_char *encoding;
|
|
982
|
|
983 if (s->encoding) {
|
|
984 return s->encoding;
|
|
985 }
|
|
986
|
|
987 for (s = s->imports; s; s = s->next) {
|
|
988
|
|
989 encoding = ngx_http_xslt_encoding(s);
|
|
990
|
|
991 if (encoding) {
|
|
992 return encoding;
|
|
993 }
|
|
994 }
|
|
995
|
|
996 return NULL;
|
|
997 }
|
|
998
|
|
999
|
392
|
1000 static void
|
|
1001 ngx_http_xslt_cleanup(void *data)
|
|
1002 {
|
|
1003 ngx_free(data);
|
|
1004 }
|
|
1005
|
|
1006
|
|
1007 static char *
|
|
1008 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
1009 {
|
411
|
1010 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
392
|
1011
|
411
|
1012 ngx_str_t *value;
|
|
1013 ngx_uint_t i;
|
|
1014 ngx_pool_cleanup_t *cln;
|
|
1015 ngx_http_xslt_file_t *file;
|
|
1016 ngx_http_xslt_filter_main_conf_t *xmcf;
|
392
|
1017
|
|
1018 if (xlcf->dtd) {
|
|
1019 return "is duplicate";
|
|
1020 }
|
|
1021
|
|
1022 value = cf->args->elts;
|
|
1023
|
411
|
1024 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
1025
|
|
1026 file = xmcf->dtd_files.elts;
|
|
1027 for (i = 0; i < xmcf->dtd_files.nelts; i++) {
|
|
1028 if (ngx_strcmp(file[i].name, &value[1].data) == 0) {
|
|
1029 xlcf->dtd = file[i].data;
|
|
1030 return NGX_CONF_OK;
|
|
1031 }
|
|
1032 }
|
|
1033
|
|
1034 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
1035 if (cln == NULL) {
|
|
1036 return NGX_CONF_ERROR;
|
|
1037 }
|
|
1038
|
392
|
1039 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data);
|
|
1040
|
|
1041 if (xlcf->dtd == NULL) {
|
|
1042 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed");
|
|
1043 return NGX_CONF_ERROR;
|
|
1044 }
|
|
1045
|
411
|
1046 cln->handler = ngx_http_xslt_cleanup_dtd;
|
|
1047 cln->data = xlcf->dtd;
|
|
1048
|
|
1049 file = ngx_array_push(&xmcf->dtd_files);
|
|
1050 if (file == NULL) {
|
|
1051 return NGX_CONF_ERROR;
|
|
1052 }
|
|
1053
|
|
1054 file->name = value[1].data;
|
|
1055 file->data = xlcf->dtd;
|
|
1056
|
392
|
1057 return NGX_CONF_OK;
|
|
1058 }
|
|
1059
|
|
1060
|
|
1061
|
|
1062 static char *
|
|
1063 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
1064 {
|
411
|
1065 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
392
|
1066
|
411
|
1067 ngx_str_t *value;
|
|
1068 ngx_uint_t i, n;
|
|
1069 ngx_pool_cleanup_t *cln;
|
|
1070 ngx_http_xslt_file_t *file;
|
|
1071 ngx_http_xslt_sheet_t *sheet;
|
|
1072 ngx_http_xslt_param_t *param;
|
|
1073 ngx_http_script_compile_t sc;
|
|
1074 ngx_http_xslt_filter_main_conf_t *xmcf;
|
392
|
1075
|
|
1076 value = cf->args->elts;
|
|
1077
|
|
1078 if (xlcf->sheets.elts == NULL) {
|
|
1079 if (ngx_array_init(&xlcf->sheets, cf->pool, 1,
|
|
1080 sizeof(ngx_http_xslt_sheet_t))
|
|
1081 != NGX_OK)
|
|
1082 {
|
|
1083 return NGX_CONF_ERROR;
|
|
1084 }
|
|
1085 }
|
|
1086
|
|
1087 sheet = ngx_array_push(&xlcf->sheets);
|
|
1088 if (sheet == NULL) {
|
|
1089 return NGX_CONF_ERROR;
|
|
1090 }
|
|
1091
|
|
1092 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t));
|
|
1093
|
|
1094 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) {
|
|
1095 return NGX_CONF_ERROR;
|
|
1096 }
|
|
1097
|
411
|
1098 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
1099
|
|
1100 file = xmcf->sheet_files.elts;
|
|
1101 for (i = 0; i < xmcf->sheet_files.nelts; i++) {
|
|
1102 if (ngx_strcmp(file[i].name, &value[1].data) == 0) {
|
|
1103 sheet->stylesheet = file[i].data;
|
|
1104 goto found;
|
|
1105 }
|
|
1106 }
|
|
1107
|
392
|
1108 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
1109 if (cln == NULL) {
|
|
1110 return NGX_CONF_ERROR;
|
|
1111 }
|
|
1112
|
|
1113 sheet->stylesheet = xsltParseStylesheetFile(value[1].data);
|
|
1114 if (sheet->stylesheet == NULL) {
|
|
1115 ngx_conf_log_error(NGX_LOG_ERR, cf, 0,
|
|
1116 "xsltParseStylesheetFile(\"%s\") failed",
|
|
1117 value[1].data);
|
|
1118 return NGX_CONF_ERROR;
|
|
1119 }
|
|
1120
|
|
1121 cln->handler = ngx_http_xslt_cleanup_stylesheet;
|
|
1122 cln->data = sheet->stylesheet;
|
|
1123
|
411
|
1124 file = ngx_array_push(&xmcf->sheet_files);
|
|
1125 if (file == NULL) {
|
|
1126 return NGX_CONF_ERROR;
|
|
1127 }
|
|
1128
|
|
1129 file->name = value[1].data;
|
|
1130 file->data = sheet->stylesheet;
|
|
1131
|
|
1132 found:
|
|
1133
|
392
|
1134 n = cf->args->nelts;
|
|
1135
|
|
1136 if (n == 2) {
|
|
1137 return NGX_CONF_OK;
|
|
1138 }
|
|
1139
|
|
1140 if (ngx_array_init(&sheet->params, cf->pool, n - 2,
|
|
1141 sizeof(ngx_http_xslt_param_t))
|
|
1142 != NGX_OK)
|
|
1143 {
|
|
1144 return NGX_CONF_ERROR;
|
|
1145 }
|
|
1146
|
|
1147 for (i = 2; i < n; i++) {
|
|
1148
|
|
1149 param = ngx_array_push(&sheet->params);
|
|
1150 if (param == NULL) {
|
|
1151 return NGX_CONF_ERROR;
|
|
1152 }
|
|
1153
|
|
1154 param->lengths = NULL;
|
|
1155 param->values = NULL;
|
|
1156
|
|
1157 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
1158
|
|
1159 sc.cf = cf;
|
|
1160 sc.source = &value[i];
|
|
1161 sc.lengths = ¶m->lengths;
|
|
1162 sc.values = ¶m->values;
|
|
1163 sc.variables = ngx_http_script_variables_count(&value[i]);
|
|
1164 sc.complete_lengths = 1;
|
|
1165 sc.complete_values = 1;
|
|
1166
|
|
1167 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
1168 return NGX_CONF_ERROR;
|
|
1169 }
|
|
1170 }
|
|
1171
|
|
1172 return NGX_CONF_OK;
|
|
1173 }
|
|
1174
|
|
1175
|
|
1176 static void
|
411
|
1177 ngx_http_xslt_cleanup_dtd(void *data)
|
|
1178 {
|
|
1179 xmlFreeDtd(data);
|
|
1180 }
|
|
1181
|
|
1182
|
|
1183 static void
|
392
|
1184 ngx_http_xslt_cleanup_stylesheet(void *data)
|
|
1185 {
|
411
|
1186 xsltFreeStylesheet(data);
|
392
|
1187 }
|
|
1188
|
|
1189
|
411
|
1190 static void *
|
|
1191 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf)
|
|
1192 {
|
|
1193 ngx_http_xslt_filter_main_conf_t *conf;
|
|
1194
|
|
1195 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t));
|
|
1196 if (conf == NULL) {
|
|
1197 return NGX_CONF_ERROR;
|
|
1198 }
|
|
1199
|
|
1200 if (ngx_array_init(&conf->dtd_files, cf->pool, 1,
|
|
1201 sizeof(ngx_http_xslt_file_t))
|
|
1202 != NGX_OK)
|
|
1203 {
|
|
1204 return NULL;
|
|
1205 }
|
|
1206
|
|
1207 if (ngx_array_init(&conf->sheet_files, cf->pool, 1,
|
|
1208 sizeof(ngx_http_xslt_file_t))
|
|
1209 != NGX_OK)
|
|
1210 {
|
|
1211 return NULL;
|
|
1212 }
|
|
1213
|
|
1214 return conf;
|
|
1215 }
|
|
1216
|
392
|
1217
|
|
1218 static void *
|
|
1219 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf)
|
|
1220 {
|
411
|
1221 ngx_http_xslt_filter_loc_conf_t *conf;
|
392
|
1222
|
411
|
1223 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t));
|
392
|
1224 if (conf == NULL) {
|
|
1225 return NGX_CONF_ERROR;
|
|
1226 }
|
|
1227
|
|
1228 /*
|
|
1229 * set by ngx_pcalloc():
|
|
1230 *
|
411
|
1231 * conf->dtd = NULL;
|
|
1232 * conf->sheets = { NULL };
|
|
1233 * conf->types = { NULL };
|
|
1234 * conf->types_keys = NULL;
|
392
|
1235 */
|
|
1236
|
|
1237 return conf;
|
|
1238 }
|
|
1239
|
|
1240
|
|
1241 static char *
|
|
1242 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
1243 {
|
411
|
1244 ngx_http_xslt_filter_loc_conf_t *prev = parent;
|
|
1245 ngx_http_xslt_filter_loc_conf_t *conf = child;
|
392
|
1246
|
|
1247 if (conf->dtd == NULL) {
|
|
1248 conf->dtd = prev->dtd;
|
|
1249 }
|
|
1250
|
|
1251 if (conf->sheets.nelts == 0) {
|
|
1252 conf->sheets = prev->sheets;
|
|
1253 }
|
|
1254
|
411
|
1255 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types,
|
|
1256 prev->types_keys, &prev->types,
|
|
1257 ngx_http_xslt_default_types)
|
392
|
1258 != NGX_OK)
|
|
1259 {
|
|
1260 return NGX_CONF_ERROR;
|
|
1261 }
|
|
1262
|
|
1263 return NGX_CONF_OK;
|
|
1264 }
|
|
1265
|
|
1266
|
|
1267 static ngx_int_t
|
|
1268 ngx_http_xslt_filter_init(ngx_conf_t *cf)
|
|
1269 {
|
|
1270 xmlInitParser();
|
|
1271
|
|
1272 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
1273 ngx_http_top_header_filter = ngx_http_xslt_header_filter;
|
|
1274
|
|
1275 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
1276 ngx_http_top_body_filter = ngx_http_xslt_body_filter;
|
|
1277
|
|
1278 return NGX_OK;
|
|
1279 }
|
|
1280
|
|
1281
|
|
1282 static void
|
|
1283 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle)
|
|
1284 {
|
|
1285 xsltCleanupGlobals();
|
|
1286 xmlCleanupParser();
|
|
1287 }
|