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