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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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660
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4 * Copyright (C) Nginx, Inc.
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392
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12 #include <libxml/parser.h>
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13 #include <libxml/tree.h>
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14 #include <libxslt/xslt.h>
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15 #include <libxslt/xsltInternals.h>
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16 #include <libxslt/transform.h>
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668
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17 #include <libxslt/variables.h>
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392
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18 #include <libxslt/xsltutils.h>
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19
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418
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20 #if (NGX_HAVE_EXSLT)
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21 #include <libexslt/exslt.h>
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22 #endif
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23
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392
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24
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25 #ifndef NGX_HTTP_XSLT_REUSE_DTD
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26 #define NGX_HTTP_XSLT_REUSE_DTD 1
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27 #endif
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28
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29
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30 typedef struct {
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668
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31 u_char *name;
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32 void *data;
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394
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33 } ngx_http_xslt_file_t;
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34
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35
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36 typedef struct {
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668
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37 ngx_array_t dtd_files; /* ngx_http_xslt_file_t */
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38 ngx_array_t sheet_files; /* ngx_http_xslt_file_t */
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394
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39 } ngx_http_xslt_filter_main_conf_t;
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40
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41
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42 typedef struct {
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668
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43 u_char *name;
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44 ngx_http_complex_value_t value;
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45 ngx_uint_t quote; /* unsigned quote:1; */
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46 } ngx_http_xslt_param_t;
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47
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48
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49 typedef struct {
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50 xsltStylesheetPtr stylesheet;
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51 ngx_array_t params; /* ngx_http_xslt_param_t */
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392
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52 } ngx_http_xslt_sheet_t;
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53
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54
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55 typedef struct {
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668
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56 xmlDtdPtr dtd;
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57 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */
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58 ngx_hash_t types;
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59 ngx_array_t *types_keys;
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60 ngx_array_t *params; /* ngx_http_xslt_param_t */
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394
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61 } ngx_http_xslt_filter_loc_conf_t;
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392
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62
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63
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64 typedef struct {
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668
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65 xmlDocPtr doc;
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66 xmlParserCtxtPtr ctxt;
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67 xsltTransformContextPtr transform;
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68 ngx_http_request_t *request;
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69 ngx_array_t params;
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70
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668
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71 ngx_uint_t done; /* unsigned done:1; */
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392
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72 } ngx_http_xslt_filter_ctx_t;
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73
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74
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75 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r,
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76 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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77 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r,
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78 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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79
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80
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81 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
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82 const xmlChar *externalId, const xmlChar *systemId);
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83 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...);
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84
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85
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86 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
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87 ngx_http_xslt_filter_ctx_t *ctx);
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88 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r,
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668
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89 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params, ngx_uint_t final);
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90 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s);
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91 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s);
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392
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92 static void ngx_http_xslt_cleanup(void *data);
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93
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94 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd,
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95 void *conf);
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96 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd,
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97 void *conf);
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668
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98 static char *ngx_http_xslt_param(ngx_conf_t *cf, ngx_command_t *cmd,
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99 void *conf);
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394
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100 static void ngx_http_xslt_cleanup_dtd(void *data);
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392
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101 static void ngx_http_xslt_cleanup_stylesheet(void *data);
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394
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102 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf);
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392
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103 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf);
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104 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent,
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105 void *child);
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106 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf);
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400
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107 static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle);
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392
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108
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109
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110 ngx_str_t ngx_http_xslt_default_types[] = {
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111 ngx_string("text/xml"),
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112 ngx_null_string
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113 };
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114
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115
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116 static ngx_command_t ngx_http_xslt_filter_commands[] = {
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117
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118 { ngx_string("xml_entities"),
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119 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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120 ngx_http_xslt_entities,
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121 NGX_HTTP_LOC_CONF_OFFSET,
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122 0,
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123 NULL },
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124
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125 { ngx_string("xslt_stylesheet"),
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394
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126 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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127 ngx_http_xslt_stylesheet,
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128 NGX_HTTP_LOC_CONF_OFFSET,
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129 0,
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130 NULL },
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131
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668
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132 { ngx_string("xslt_param"),
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133 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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134 ngx_http_xslt_param,
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135 NGX_HTTP_LOC_CONF_OFFSET,
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136 0,
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137 NULL },
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138
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139 { ngx_string("xslt_string_param"),
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140 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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141 ngx_http_xslt_param,
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142 NGX_HTTP_LOC_CONF_OFFSET,
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143 0,
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144 (void *) 1 },
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145
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392
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146 { ngx_string("xslt_types"),
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394
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147 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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392
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148 ngx_http_types_slot,
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149 NGX_HTTP_LOC_CONF_OFFSET,
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394
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150 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys),
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392
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151 &ngx_http_xslt_default_types[0] },
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152
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153 ngx_null_command
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154 };
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155
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156
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157 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = {
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158 NULL, /* preconfiguration */
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159 ngx_http_xslt_filter_init, /* postconfiguration */
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160
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394
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161 ngx_http_xslt_filter_create_main_conf, /* create main configuration */
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392
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162 NULL, /* init main configuration */
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163
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164 NULL, /* create server configuration */
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165 NULL, /* merge server configuration */
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166
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167 ngx_http_xslt_filter_create_conf, /* create location configuration */
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168 ngx_http_xslt_filter_merge_conf /* merge location configuration */
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169 };
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170
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171
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172 ngx_module_t ngx_http_xslt_filter_module = {
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173 NGX_MODULE_V1,
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174 &ngx_http_xslt_filter_module_ctx, /* module context */
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175 ngx_http_xslt_filter_commands, /* module directives */
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176 NGX_HTTP_MODULE, /* module type */
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177 NULL, /* init master */
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178 NULL, /* init module */
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179 NULL, /* init process */
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180 NULL, /* init thread */
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181 NULL, /* exit thread */
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508
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182 ngx_http_xslt_filter_exit, /* exit process */
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183 ngx_http_xslt_filter_exit, /* exit master */
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184 NGX_MODULE_V1_PADDING
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185 };
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186
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187
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188 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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189 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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190
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191
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192 static ngx_int_t
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193 ngx_http_xslt_header_filter(ngx_http_request_t *r)
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194 {
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195 ngx_http_xslt_filter_ctx_t *ctx;
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196 ngx_http_xslt_filter_loc_conf_t *conf;
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392
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197
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198 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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199 "xslt filter header");
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200
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201 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
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202 return ngx_http_next_header_filter(r);
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203 }
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204
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205 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
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206
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207 if (conf->sheets.nelts == 0
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208 || ngx_http_test_content_type(r, &conf->types) == NULL)
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392
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209 {
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210 return ngx_http_next_header_filter(r);
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211 }
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212
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213 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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214
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215 if (ctx) {
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216 return ngx_http_next_header_filter(r);
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217 }
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218
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219 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t));
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220 if (ctx == NULL) {
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221 return NGX_ERROR;
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222 }
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223
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224 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module);
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225
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226 r->main_filter_need_in_memory = 1;
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227
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228 return NGX_OK;
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229 }
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230
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231
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232 static ngx_int_t
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233 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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234 {
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508
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235 int wellFormed;
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236 ngx_chain_t *cl;
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237 ngx_http_xslt_filter_ctx_t *ctx;
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238
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239 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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240 "xslt filter body");
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241
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242 if (in == NULL) {
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243 return ngx_http_next_body_filter(r, in);
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244 }
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245
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246 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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247
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248 if (ctx == NULL || ctx->done) {
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249 return ngx_http_next_body_filter(r, in);
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250 }
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251
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252 for (cl = in; cl; cl = cl->next) {
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253
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254 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) {
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255
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582
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256 if (ctx->ctxt->myDoc) {
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257
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258 #if (NGX_HTTP_XSLT_REUSE_DTD)
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259 ctx->ctxt->myDoc->extSubset = NULL;
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260 #endif
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261 xmlFreeDoc(ctx->ctxt->myDoc);
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262 }
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263
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264 xmlFreeParserCtxt(ctx->ctxt);
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265
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266 return ngx_http_xslt_send(r, ctx, NULL);
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267 }
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268
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496
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269 if (cl->buf->last_buf || cl->buf->last_in_chain) {
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392
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270
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271 ctx->doc = 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->doc->extSubset = NULL;
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275 #endif
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276
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277 wellFormed = ctx->ctxt->wellFormed;
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278
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279 xmlFreeParserCtxt(ctx->ctxt);
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280
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281 if (wellFormed) {
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392
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282 return ngx_http_xslt_send(r, ctx,
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283 ngx_http_xslt_apply_stylesheet(r, ctx));
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284 }
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285
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286 xmlFreeDoc(ctx->doc);
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287
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288 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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289 "not well formed XML document");
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290
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291 return ngx_http_xslt_send(r, ctx, NULL);
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292 }
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293 }
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294
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295 return NGX_OK;
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296 }
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297
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298
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299 static ngx_int_t
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300 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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301 ngx_buf_t *b)
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302 {
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303 ngx_int_t rc;
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304 ngx_chain_t out;
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305 ngx_pool_cleanup_t *cln;
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306
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307 ctx->done = 1;
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308
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309 if (b == NULL) {
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488
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310 return ngx_http_filter_finalize_request(r, NULL,
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484
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311 NGX_HTTP_INTERNAL_SERVER_ERROR);
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392
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312 }
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313
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314 cln = ngx_pool_cleanup_add(r->pool, 0);
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315
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316 if (cln == NULL) {
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317 ngx_free(b->pos);
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488
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318 return ngx_http_filter_finalize_request(r, NULL,
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392
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319 NGX_HTTP_INTERNAL_SERVER_ERROR);
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320 }
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321
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394
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322 if (r == r->main) {
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323 r->headers_out.content_length_n = b->last - b->pos;
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324
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394
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325 if (r->headers_out.content_length) {
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326 r->headers_out.content_length->hash = 0;
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327 r->headers_out.content_length = NULL;
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328 }
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329
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330 ngx_http_clear_last_modified(r);
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680
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331 ngx_http_clear_etag(r);
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392
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332 }
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333
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334 rc = ngx_http_next_header_filter(r);
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335
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336 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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337 ngx_free(b->pos);
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338 return rc;
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339 }
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340
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341 cln->handler = ngx_http_xslt_cleanup;
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342 cln->data = b->pos;
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343
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344 out.buf = b;
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345 out.next = NULL;
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346
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347 return ngx_http_next_body_filter(r, &out);
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348 }
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349
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350
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351 static ngx_int_t
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352 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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353 ngx_buf_t *b)
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354 {
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586
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355 int err;
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356 xmlParserCtxtPtr ctxt;
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392
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357
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358 if (ctx->ctxt == NULL) {
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359
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360 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
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361 if (ctxt == NULL) {
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362 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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363 "xmlCreatePushParserCtxt() failed");
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364 return NGX_ERROR;
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365 }
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668
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366 xmlCtxtUseOptions(ctxt, XML_PARSE_NOENT|XML_PARSE_DTDLOAD
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367 |XML_PARSE_NOWARNING);
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392
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368
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586
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369 ctxt->sax->externalSubset = ngx_http_xslt_sax_external_subset;
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370 ctxt->sax->setDocumentLocator = NULL;
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371 ctxt->sax->error = ngx_http_xslt_sax_error;
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372 ctxt->sax->fatalError = ngx_http_xslt_sax_error;
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373 ctxt->sax->_private = ctx;
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392
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374
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375 ctx->ctxt = ctxt;
|
|
|
376 ctx->request = r;
|
|
|
377 }
|
|
|
378
|
|
496
|
379 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, (int) (b->last - b->pos),
|
|
|
380 (b->last_buf) || (b->last_in_chain));
|
|
392
|
381
|
|
|
382 if (err == 0) {
|
|
|
383 b->pos = b->last;
|
|
|
384 return NGX_OK;
|
|
|
385 }
|
|
|
386
|
|
|
387 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
388 "xmlParseChunk() failed, error:%d", err);
|
|
|
389
|
|
|
390 return NGX_ERROR;
|
|
|
391 }
|
|
|
392
|
|
|
393
|
|
|
394 static void
|
|
|
395 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
|
|
|
396 const xmlChar *externalId, const xmlChar *systemId)
|
|
|
397 {
|
|
586
|
398 xmlParserCtxtPtr ctxt = data;
|
|
392
|
399
|
|
394
|
400 xmlDocPtr doc;
|
|
|
401 xmlDtdPtr dtd;
|
|
|
402 ngx_http_request_t *r;
|
|
586
|
403 ngx_http_xslt_filter_ctx_t *ctx;
|
|
394
|
404 ngx_http_xslt_filter_loc_conf_t *conf;
|
|
392
|
405
|
|
586
|
406 ctx = ctxt->sax->_private;
|
|
392
|
407 r = ctx->request;
|
|
|
408
|
|
|
409 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
|
410
|
|
|
411 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
412 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"",
|
|
|
413 name ? name : (xmlChar *) "",
|
|
|
414 externalId ? externalId : (xmlChar *) "",
|
|
|
415 systemId ? systemId : (xmlChar *) "");
|
|
|
416
|
|
586
|
417 doc = ctxt->myDoc;
|
|
392
|
418
|
|
|
419 #if (NGX_HTTP_XSLT_REUSE_DTD)
|
|
|
420
|
|
|
421 dtd = conf->dtd;
|
|
|
422
|
|
|
423 #else
|
|
|
424
|
|
|
425 dtd = xmlCopyDtd(conf->dtd);
|
|
|
426 if (dtd == NULL) {
|
|
|
427 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
428 "xmlCopyDtd() failed");
|
|
|
429 return;
|
|
|
430 }
|
|
|
431
|
|
|
432 if (doc->children == NULL) {
|
|
|
433 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd);
|
|
|
434
|
|
|
435 } else {
|
|
|
436 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd);
|
|
|
437 }
|
|
|
438
|
|
|
439 #endif
|
|
|
440
|
|
|
441 doc->extSubset = dtd;
|
|
|
442 }
|
|
|
443
|
|
|
444
|
|
|
445 static void ngx_cdecl
|
|
|
446 ngx_http_xslt_sax_error(void *data, const char *msg, ...)
|
|
|
447 {
|
|
586
|
448 xmlParserCtxtPtr ctxt = data;
|
|
392
|
449
|
|
586
|
450 size_t n;
|
|
|
451 va_list args;
|
|
|
452 ngx_http_xslt_filter_ctx_t *ctx;
|
|
|
453 u_char buf[NGX_MAX_ERROR_STR];
|
|
|
454
|
|
|
455 ctx = ctxt->sax->_private;
|
|
392
|
456
|
|
|
457 buf[0] = '\0';
|
|
|
458
|
|
|
459 va_start(args, msg);
|
|
|
460 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args);
|
|
|
461 va_end(args);
|
|
|
462
|
|
|
463 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ }
|
|
|
464
|
|
|
465 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
510
|
466 "libxml2 error: \"%*s\"", n + 1, buf);
|
|
392
|
467 }
|
|
|
468
|
|
|
469
|
|
|
470 static ngx_buf_t *
|
|
|
471 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
|
|
|
472 ngx_http_xslt_filter_ctx_t *ctx)
|
|
|
473 {
|
|
394
|
474 int len, rc, doc_type;
|
|
|
475 u_char *type, *encoding;
|
|
|
476 ngx_buf_t *b;
|
|
|
477 ngx_uint_t i;
|
|
|
478 xmlChar *buf;
|
|
|
479 xmlDocPtr doc, res;
|
|
|
480 ngx_http_xslt_sheet_t *sheet;
|
|
|
481 ngx_http_xslt_filter_loc_conf_t *conf;
|
|
392
|
482
|
|
|
483 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
|
484 sheet = conf->sheets.elts;
|
|
|
485 doc = ctx->doc;
|
|
|
486
|
|
|
487 /* preallocate array for 4 params */
|
|
|
488
|
|
|
489 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *))
|
|
|
490 != NGX_OK)
|
|
|
491 {
|
|
|
492 xmlFreeDoc(doc);
|
|
|
493 return NULL;
|
|
|
494 }
|
|
|
495
|
|
|
496 for (i = 0; i < conf->sheets.nelts; i++) {
|
|
|
497
|
|
668
|
498 ctx->transform = xsltNewTransformContext(sheet[i].stylesheet, doc);
|
|
|
499 if (ctx->transform == NULL) {
|
|
392
|
500 xmlFreeDoc(doc);
|
|
|
501 return NULL;
|
|
|
502 }
|
|
|
503
|
|
668
|
504 if (conf->params
|
|
|
505 && ngx_http_xslt_params(r, ctx, conf->params, 0) != NGX_OK)
|
|
|
506 {
|
|
|
507 xsltFreeTransformContext(ctx->transform);
|
|
|
508 xmlFreeDoc(doc);
|
|
|
509 return NULL;
|
|
|
510 }
|
|
392
|
511
|
|
668
|
512 if (ngx_http_xslt_params(r, ctx, &sheet[i].params, 1) != NGX_OK) {
|
|
|
513 xsltFreeTransformContext(ctx->transform);
|
|
|
514 xmlFreeDoc(doc);
|
|
|
515 return NULL;
|
|
|
516 }
|
|
|
517
|
|
|
518 res = xsltApplyStylesheetUser(sheet[i].stylesheet, doc,
|
|
|
519 ctx->params.elts, NULL, NULL,
|
|
|
520 ctx->transform);
|
|
|
521
|
|
|
522 xsltFreeTransformContext(ctx->transform);
|
|
392
|
523 xmlFreeDoc(doc);
|
|
|
524
|
|
|
525 if (res == NULL) {
|
|
|
526 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
527 "xsltApplyStylesheet() failed");
|
|
|
528 return NULL;
|
|
|
529 }
|
|
|
530
|
|
|
531 doc = res;
|
|
|
532
|
|
|
533 /* reset array elements */
|
|
|
534 ctx->params.nelts = 0;
|
|
|
535 }
|
|
|
536
|
|
394
|
537 /* there must be at least one stylesheet */
|
|
|
538
|
|
|
539 if (r == r->main) {
|
|
|
540 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet);
|
|
392
|
541
|
|
394
|
542 } else {
|
|
|
543 type = NULL;
|
|
|
544 }
|
|
|
545
|
|
|
546 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet);
|
|
|
547 doc_type = doc->type;
|
|
|
548
|
|
|
549 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
550 "xslt filter type: %d t:%s e:%s",
|
|
|
551 doc_type, type ? type : (u_char *) "(null)",
|
|
|
552 encoding ? encoding : (u_char *) "(null)");
|
|
392
|
553
|
|
|
554 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet);
|
|
|
555
|
|
|
556 xmlFreeDoc(doc);
|
|
|
557
|
|
|
558 if (rc != 0) {
|
|
|
559 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
560 "xsltSaveResultToString() failed");
|
|
|
561 return NULL;
|
|
|
562 }
|
|
|
563
|
|
|
564 if (len == 0) {
|
|
|
565 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
566 "xsltSaveResultToString() returned zero-length result");
|
|
|
567 return NULL;
|
|
|
568 }
|
|
|
569
|
|
|
570 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
571 if (b == NULL) {
|
|
|
572 ngx_free(buf);
|
|
|
573 return NULL;
|
|
|
574 }
|
|
|
575
|
|
|
576 b->pos = buf;
|
|
|
577 b->last = buf + len;
|
|
|
578 b->memory = 1;
|
|
|
579
|
|
394
|
580 if (encoding) {
|
|
|
581 r->headers_out.charset.len = ngx_strlen(encoding);
|
|
|
582 r->headers_out.charset.data = encoding;
|
|
|
583 }
|
|
|
584
|
|
|
585 if (r != r->main) {
|
|
|
586 return b;
|
|
|
587 }
|
|
|
588
|
|
496
|
589 b->last_buf = 1;
|
|
|
590
|
|
394
|
591 if (type) {
|
|
|
592 len = ngx_strlen(type);
|
|
|
593
|
|
|
594 r->headers_out.content_type_len = len;
|
|
|
595 r->headers_out.content_type.len = len;
|
|
|
596 r->headers_out.content_type.data = type;
|
|
|
597
|
|
|
598 } else if (doc_type == XML_HTML_DOCUMENT_NODE) {
|
|
|
599
|
|
|
600 r->headers_out.content_type_len = sizeof("text/html") - 1;
|
|
570
|
601 ngx_str_set(&r->headers_out.content_type, "text/html");
|
|
394
|
602 }
|
|
|
603
|
|
494
|
604 r->headers_out.content_type_lowcase = NULL;
|
|
|
605
|
|
392
|
606 return b;
|
|
|
607 }
|
|
|
608
|
|
|
609
|
|
|
610 static ngx_int_t
|
|
|
611 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
|
|
668
|
612 ngx_array_t *params, ngx_uint_t final)
|
|
392
|
613 {
|
|
668
|
614 u_char *p, *last, *value, *dst, *src, **s;
|
|
|
615 size_t len;
|
|
|
616 ngx_uint_t i;
|
|
|
617 ngx_str_t string;
|
|
|
618 ngx_http_xslt_param_t *param;
|
|
392
|
619
|
|
|
620 param = params->elts;
|
|
|
621
|
|
|
622 for (i = 0; i < params->nelts; i++) {
|
|
|
623
|
|
668
|
624 if (ngx_http_complex_value(r, ¶m[i].value, &string) != NGX_OK) {
|
|
392
|
625 return NGX_ERROR;
|
|
|
626 }
|
|
|
627
|
|
|
628 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
629 "xslt filter param: \"%s\"", string.data);
|
|
|
630
|
|
668
|
631 if (param[i].name) {
|
|
|
632
|
|
|
633 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
634 "xslt filter param name: \"%s\"", param[i].name);
|
|
|
635
|
|
|
636 if (param[i].quote) {
|
|
|
637 if (xsltQuoteOneUserParam(ctx->transform, param[i].name,
|
|
|
638 string.data)
|
|
|
639 != 0)
|
|
|
640 {
|
|
|
641 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
642 "xsltQuoteOneUserParam(\"%s\", \"%s\") failed",
|
|
|
643 param[i].name, string.data);
|
|
|
644 return NGX_ERROR;
|
|
|
645 }
|
|
|
646
|
|
|
647 continue;
|
|
|
648 }
|
|
|
649
|
|
|
650 s = ngx_array_push(&ctx->params);
|
|
|
651 if (s == NULL) {
|
|
|
652 return NGX_ERROR;
|
|
|
653 }
|
|
|
654
|
|
|
655 *s = param[i].name;
|
|
|
656
|
|
|
657 s = ngx_array_push(&ctx->params);
|
|
|
658 if (s == NULL) {
|
|
|
659 return NGX_ERROR;
|
|
|
660 }
|
|
|
661
|
|
|
662 *s = string.data;
|
|
|
663
|
|
|
664 continue;
|
|
|
665 }
|
|
|
666
|
|
|
667 /*
|
|
|
668 * parse param1=value1:param2=value2 syntax as used by parameters
|
|
|
669 * specified in xslt_stylesheet directives
|
|
|
670 */
|
|
|
671
|
|
392
|
672 p = string.data;
|
|
668
|
673 last = string.data + string.len;
|
|
392
|
674
|
|
|
675 while (p && *p) {
|
|
|
676
|
|
|
677 value = p;
|
|
|
678 p = (u_char *) ngx_strchr(p, '=');
|
|
|
679 if (p == NULL) {
|
|
|
680 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
681 "invalid libxslt parameter \"%s\"", value);
|
|
|
682 return NGX_ERROR;
|
|
|
683 }
|
|
|
684 *p++ = '\0';
|
|
|
685
|
|
|
686 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
687 "xslt filter param name: \"%s\"", value);
|
|
|
688
|
|
|
689 s = ngx_array_push(&ctx->params);
|
|
|
690 if (s == NULL) {
|
|
|
691 return NGX_ERROR;
|
|
|
692 }
|
|
|
693
|
|
|
694 *s = value;
|
|
|
695
|
|
|
696 value = p;
|
|
|
697 p = (u_char *) ngx_strchr(p, ':');
|
|
|
698
|
|
|
699 if (p) {
|
|
|
700 len = p - value;
|
|
|
701 *p++ = '\0';
|
|
|
702
|
|
|
703 } else {
|
|
|
704 len = last - value;
|
|
|
705 }
|
|
|
706
|
|
|
707 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
708 "xslt filter param value: \"%s\"", value);
|
|
|
709
|
|
|
710 dst = value;
|
|
|
711 src = value;
|
|
|
712
|
|
|
713 ngx_unescape_uri(&dst, &src, len, 0);
|
|
|
714
|
|
|
715 *dst = '\0';
|
|
|
716
|
|
|
717 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
718 "xslt filter param unescaped: \"%s\"", value);
|
|
|
719
|
|
|
720 s = ngx_array_push(&ctx->params);
|
|
|
721 if (s == NULL) {
|
|
|
722 return NGX_ERROR;
|
|
|
723 }
|
|
|
724
|
|
|
725 *s = value;
|
|
|
726 }
|
|
|
727 }
|
|
|
728
|
|
668
|
729 if (final) {
|
|
|
730 s = ngx_array_push(&ctx->params);
|
|
|
731 if (s == NULL) {
|
|
|
732 return NGX_ERROR;
|
|
|
733 }
|
|
|
734
|
|
|
735 *s = NULL;
|
|
392
|
736 }
|
|
|
737
|
|
|
738 return NGX_OK;
|
|
|
739 }
|
|
|
740
|
|
|
741
|
|
394
|
742 static u_char *
|
|
|
743 ngx_http_xslt_content_type(xsltStylesheetPtr s)
|
|
|
744 {
|
|
|
745 u_char *type;
|
|
|
746
|
|
|
747 if (s->mediaType) {
|
|
|
748 return s->mediaType;
|
|
|
749 }
|
|
|
750
|
|
|
751 for (s = s->imports; s; s = s->next) {
|
|
|
752
|
|
|
753 type = ngx_http_xslt_content_type(s);
|
|
|
754
|
|
|
755 if (type) {
|
|
|
756 return type;
|
|
|
757 }
|
|
|
758 }
|
|
|
759
|
|
|
760 return NULL;
|
|
|
761 }
|
|
|
762
|
|
|
763
|
|
|
764 static u_char *
|
|
|
765 ngx_http_xslt_encoding(xsltStylesheetPtr s)
|
|
|
766 {
|
|
|
767 u_char *encoding;
|
|
|
768
|
|
|
769 if (s->encoding) {
|
|
|
770 return s->encoding;
|
|
|
771 }
|
|
|
772
|
|
|
773 for (s = s->imports; s; s = s->next) {
|
|
|
774
|
|
|
775 encoding = ngx_http_xslt_encoding(s);
|
|
|
776
|
|
|
777 if (encoding) {
|
|
|
778 return encoding;
|
|
|
779 }
|
|
|
780 }
|
|
|
781
|
|
|
782 return NULL;
|
|
|
783 }
|
|
|
784
|
|
|
785
|
|
392
|
786 static void
|
|
|
787 ngx_http_xslt_cleanup(void *data)
|
|
|
788 {
|
|
|
789 ngx_free(data);
|
|
|
790 }
|
|
|
791
|
|
|
792
|
|
|
793 static char *
|
|
|
794 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
795 {
|
|
394
|
796 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
|
392
|
797
|
|
394
|
798 ngx_str_t *value;
|
|
|
799 ngx_uint_t i;
|
|
|
800 ngx_pool_cleanup_t *cln;
|
|
|
801 ngx_http_xslt_file_t *file;
|
|
|
802 ngx_http_xslt_filter_main_conf_t *xmcf;
|
|
392
|
803
|
|
|
804 if (xlcf->dtd) {
|
|
|
805 return "is duplicate";
|
|
|
806 }
|
|
|
807
|
|
|
808 value = cf->args->elts;
|
|
|
809
|
|
394
|
810 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
|
811
|
|
|
812 file = xmcf->dtd_files.elts;
|
|
|
813 for (i = 0; i < xmcf->dtd_files.nelts; i++) {
|
|
676
|
814 if (ngx_strcmp(file[i].name, value[1].data) == 0) {
|
|
394
|
815 xlcf->dtd = file[i].data;
|
|
|
816 return NGX_CONF_OK;
|
|
|
817 }
|
|
|
818 }
|
|
|
819
|
|
|
820 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
|
821 if (cln == NULL) {
|
|
|
822 return NGX_CONF_ERROR;
|
|
|
823 }
|
|
|
824
|
|
392
|
825 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data);
|
|
|
826
|
|
|
827 if (xlcf->dtd == NULL) {
|
|
|
828 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed");
|
|
|
829 return NGX_CONF_ERROR;
|
|
|
830 }
|
|
|
831
|
|
394
|
832 cln->handler = ngx_http_xslt_cleanup_dtd;
|
|
|
833 cln->data = xlcf->dtd;
|
|
|
834
|
|
|
835 file = ngx_array_push(&xmcf->dtd_files);
|
|
|
836 if (file == NULL) {
|
|
|
837 return NGX_CONF_ERROR;
|
|
|
838 }
|
|
|
839
|
|
|
840 file->name = value[1].data;
|
|
|
841 file->data = xlcf->dtd;
|
|
|
842
|
|
392
|
843 return NGX_CONF_OK;
|
|
|
844 }
|
|
|
845
|
|
|
846
|
|
|
847
|
|
|
848 static char *
|
|
|
849 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
850 {
|
|
394
|
851 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
|
392
|
852
|
|
394
|
853 ngx_str_t *value;
|
|
|
854 ngx_uint_t i, n;
|
|
|
855 ngx_pool_cleanup_t *cln;
|
|
|
856 ngx_http_xslt_file_t *file;
|
|
|
857 ngx_http_xslt_sheet_t *sheet;
|
|
668
|
858 ngx_http_xslt_param_t *param;
|
|
464
|
859 ngx_http_compile_complex_value_t ccv;
|
|
394
|
860 ngx_http_xslt_filter_main_conf_t *xmcf;
|
|
392
|
861
|
|
|
862 value = cf->args->elts;
|
|
|
863
|
|
|
864 if (xlcf->sheets.elts == NULL) {
|
|
|
865 if (ngx_array_init(&xlcf->sheets, cf->pool, 1,
|
|
|
866 sizeof(ngx_http_xslt_sheet_t))
|
|
|
867 != NGX_OK)
|
|
|
868 {
|
|
|
869 return NGX_CONF_ERROR;
|
|
|
870 }
|
|
|
871 }
|
|
|
872
|
|
|
873 sheet = ngx_array_push(&xlcf->sheets);
|
|
|
874 if (sheet == NULL) {
|
|
|
875 return NGX_CONF_ERROR;
|
|
|
876 }
|
|
|
877
|
|
|
878 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t));
|
|
|
879
|
|
|
880 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) {
|
|
|
881 return NGX_CONF_ERROR;
|
|
|
882 }
|
|
|
883
|
|
394
|
884 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
|
885
|
|
|
886 file = xmcf->sheet_files.elts;
|
|
|
887 for (i = 0; i < xmcf->sheet_files.nelts; i++) {
|
|
676
|
888 if (ngx_strcmp(file[i].name, value[1].data) == 0) {
|
|
394
|
889 sheet->stylesheet = file[i].data;
|
|
|
890 goto found;
|
|
|
891 }
|
|
|
892 }
|
|
|
893
|
|
392
|
894 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
|
895 if (cln == NULL) {
|
|
|
896 return NGX_CONF_ERROR;
|
|
|
897 }
|
|
|
898
|
|
|
899 sheet->stylesheet = xsltParseStylesheetFile(value[1].data);
|
|
|
900 if (sheet->stylesheet == NULL) {
|
|
|
901 ngx_conf_log_error(NGX_LOG_ERR, cf, 0,
|
|
|
902 "xsltParseStylesheetFile(\"%s\") failed",
|
|
|
903 value[1].data);
|
|
|
904 return NGX_CONF_ERROR;
|
|
|
905 }
|
|
|
906
|
|
|
907 cln->handler = ngx_http_xslt_cleanup_stylesheet;
|
|
|
908 cln->data = sheet->stylesheet;
|
|
|
909
|
|
394
|
910 file = ngx_array_push(&xmcf->sheet_files);
|
|
|
911 if (file == NULL) {
|
|
|
912 return NGX_CONF_ERROR;
|
|
|
913 }
|
|
|
914
|
|
|
915 file->name = value[1].data;
|
|
|
916 file->data = sheet->stylesheet;
|
|
|
917
|
|
|
918 found:
|
|
|
919
|
|
392
|
920 n = cf->args->nelts;
|
|
|
921
|
|
|
922 if (n == 2) {
|
|
|
923 return NGX_CONF_OK;
|
|
|
924 }
|
|
|
925
|
|
|
926 if (ngx_array_init(&sheet->params, cf->pool, n - 2,
|
|
668
|
927 sizeof(ngx_http_xslt_param_t))
|
|
392
|
928 != NGX_OK)
|
|
|
929 {
|
|
|
930 return NGX_CONF_ERROR;
|
|
|
931 }
|
|
|
932
|
|
|
933 for (i = 2; i < n; i++) {
|
|
|
934
|
|
|
935 param = ngx_array_push(&sheet->params);
|
|
|
936 if (param == NULL) {
|
|
|
937 return NGX_CONF_ERROR;
|
|
|
938 }
|
|
|
939
|
|
668
|
940 ngx_memzero(param, sizeof(ngx_http_xslt_param_t));
|
|
464
|
941 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
392
|
942
|
|
464
|
943 ccv.cf = cf;
|
|
|
944 ccv.value = &value[i];
|
|
668
|
945 ccv.complex_value = ¶m->value;
|
|
464
|
946 ccv.zero = 1;
|
|
392
|
947
|
|
464
|
948 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
392
|
949 return NGX_CONF_ERROR;
|
|
|
950 }
|
|
|
951 }
|
|
|
952
|
|
|
953 return NGX_CONF_OK;
|
|
|
954 }
|
|
|
955
|
|
|
956
|
|
668
|
957 static char *
|
|
|
958 ngx_http_xslt_param(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
959 {
|
|
|
960 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
|
|
961
|
|
|
962 ngx_http_xslt_param_t *param;
|
|
|
963 ngx_http_compile_complex_value_t ccv;
|
|
|
964 ngx_str_t *value;
|
|
|
965
|
|
|
966 value = cf->args->elts;
|
|
|
967
|
|
|
968 if (xlcf->params == NULL) {
|
|
|
969 xlcf->params = ngx_array_create(cf->pool, 2,
|
|
|
970 sizeof(ngx_http_xslt_param_t));
|
|
|
971 if (xlcf->params == NULL) {
|
|
|
972 return NGX_CONF_ERROR;
|
|
|
973 }
|
|
|
974 }
|
|
|
975
|
|
|
976 param = ngx_array_push(xlcf->params);
|
|
|
977 if (param == NULL) {
|
|
|
978 return NGX_CONF_ERROR;
|
|
|
979 }
|
|
|
980
|
|
|
981 param->name = value[1].data;
|
|
|
982 param->quote = (cmd->post == NULL) ? 0 : 1;
|
|
|
983
|
|
|
984 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
|
985
|
|
|
986 ccv.cf = cf;
|
|
|
987 ccv.value = &value[2];
|
|
|
988 ccv.complex_value = ¶m->value;
|
|
|
989 ccv.zero = 1;
|
|
|
990
|
|
|
991 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
|
992 return NGX_CONF_ERROR;
|
|
|
993 }
|
|
|
994
|
|
|
995 return NGX_CONF_OK;
|
|
|
996 }
|
|
|
997
|
|
|
998
|
|
392
|
999 static void
|
|
394
|
1000 ngx_http_xslt_cleanup_dtd(void *data)
|
|
|
1001 {
|
|
|
1002 xmlFreeDtd(data);
|
|
|
1003 }
|
|
|
1004
|
|
|
1005
|
|
|
1006 static void
|
|
392
|
1007 ngx_http_xslt_cleanup_stylesheet(void *data)
|
|
|
1008 {
|
|
394
|
1009 xsltFreeStylesheet(data);
|
|
392
|
1010 }
|
|
|
1011
|
|
|
1012
|
|
394
|
1013 static void *
|
|
|
1014 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf)
|
|
|
1015 {
|
|
|
1016 ngx_http_xslt_filter_main_conf_t *conf;
|
|
|
1017
|
|
|
1018 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t));
|
|
|
1019 if (conf == NULL) {
|
|
496
|
1020 return NULL;
|
|
394
|
1021 }
|
|
|
1022
|
|
|
1023 if (ngx_array_init(&conf->dtd_files, cf->pool, 1,
|
|
|
1024 sizeof(ngx_http_xslt_file_t))
|
|
|
1025 != NGX_OK)
|
|
|
1026 {
|
|
|
1027 return NULL;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 if (ngx_array_init(&conf->sheet_files, cf->pool, 1,
|
|
|
1031 sizeof(ngx_http_xslt_file_t))
|
|
|
1032 != NGX_OK)
|
|
|
1033 {
|
|
|
1034 return NULL;
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 return conf;
|
|
|
1038 }
|
|
|
1039
|
|
392
|
1040
|
|
|
1041 static void *
|
|
|
1042 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf)
|
|
|
1043 {
|
|
394
|
1044 ngx_http_xslt_filter_loc_conf_t *conf;
|
|
392
|
1045
|
|
394
|
1046 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t));
|
|
392
|
1047 if (conf == NULL) {
|
|
496
|
1048 return NULL;
|
|
392
|
1049 }
|
|
|
1050
|
|
|
1051 /*
|
|
|
1052 * set by ngx_pcalloc():
|
|
|
1053 *
|
|
394
|
1054 * conf->dtd = NULL;
|
|
|
1055 * conf->sheets = { NULL };
|
|
|
1056 * conf->types = { NULL };
|
|
|
1057 * conf->types_keys = NULL;
|
|
668
|
1058 * conf->params = NULL;
|
|
392
|
1059 */
|
|
|
1060
|
|
|
1061 return conf;
|
|
|
1062 }
|
|
|
1063
|
|
|
1064
|
|
|
1065 static char *
|
|
|
1066 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
1067 {
|
|
394
|
1068 ngx_http_xslt_filter_loc_conf_t *prev = parent;
|
|
|
1069 ngx_http_xslt_filter_loc_conf_t *conf = child;
|
|
392
|
1070
|
|
|
1071 if (conf->dtd == NULL) {
|
|
|
1072 conf->dtd = prev->dtd;
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 if (conf->sheets.nelts == 0) {
|
|
|
1076 conf->sheets = prev->sheets;
|
|
|
1077 }
|
|
|
1078
|
|
668
|
1079 if (conf->params == NULL) {
|
|
|
1080 conf->params = prev->params;
|
|
|
1081 }
|
|
|
1082
|
|
554
|
1083 if (ngx_http_merge_types(cf, &conf->types_keys, &conf->types,
|
|
|
1084 &prev->types_keys, &prev->types,
|
|
394
|
1085 ngx_http_xslt_default_types)
|
|
392
|
1086 != NGX_OK)
|
|
|
1087 {
|
|
|
1088 return NGX_CONF_ERROR;
|
|
|
1089 }
|
|
|
1090
|
|
|
1091 return NGX_CONF_OK;
|
|
|
1092 }
|
|
|
1093
|
|
|
1094
|
|
|
1095 static ngx_int_t
|
|
|
1096 ngx_http_xslt_filter_init(ngx_conf_t *cf)
|
|
|
1097 {
|
|
|
1098 xmlInitParser();
|
|
|
1099
|
|
418
|
1100 #if (NGX_HAVE_EXSLT)
|
|
|
1101 exsltRegisterAll();
|
|
|
1102 #endif
|
|
|
1103
|
|
392
|
1104 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
1105 ngx_http_top_header_filter = ngx_http_xslt_header_filter;
|
|
|
1106
|
|
|
1107 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
1108 ngx_http_top_body_filter = ngx_http_xslt_body_filter;
|
|
|
1109
|
|
|
1110 return NGX_OK;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113
|
|
|
1114 static void
|
|
|
1115 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle)
|
|
|
1116 {
|
|
|
1117 xsltCleanupGlobals();
|
|
|
1118 xmlCleanupParser();
|
|
|
1119 }
|
