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