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