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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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17 #include <libxslt/xsltutils.h>
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18
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418
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19 #if (NGX_HAVE_EXSLT)
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20 #include <libexslt/exslt.h>
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21 #endif
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22
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392
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23
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24 #ifndef NGX_HTTP_XSLT_REUSE_DTD
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25 #define NGX_HTTP_XSLT_REUSE_DTD 1
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26 #endif
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27
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28
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29 typedef struct {
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394
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30 u_char *name;
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31 void *data;
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32 } ngx_http_xslt_file_t;
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33
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34
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35 typedef struct {
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36 ngx_array_t dtd_files; /* ngx_http_xslt_file_t */
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37 ngx_array_t sheet_files; /* ngx_http_xslt_file_t */
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38 } ngx_http_xslt_filter_main_conf_t;
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39
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40
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41 typedef struct {
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392
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42 xsltStylesheetPtr stylesheet;
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464
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43 ngx_array_t params; /* ngx_http_complex_value_t */
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392
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44 } ngx_http_xslt_sheet_t;
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45
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46
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47 typedef struct {
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48 xmlDtdPtr dtd;
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394
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49 ngx_array_t sheets; /* ngx_http_xslt_sheet_t */
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50 ngx_hash_t types;
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51 ngx_array_t *types_keys;
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52 } ngx_http_xslt_filter_loc_conf_t;
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392
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53
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54
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55 typedef struct {
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56 xmlDocPtr doc;
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57 xmlParserCtxtPtr ctxt;
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58 ngx_http_request_t *request;
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59 ngx_array_t params;
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394
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60
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61 ngx_uint_t done; /* unsigned done:1; */
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392
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62 } ngx_http_xslt_filter_ctx_t;
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63
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64
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65 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r,
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66 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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67 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r,
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68 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b);
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69
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70
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71 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
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72 const xmlChar *externalId, const xmlChar *systemId);
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73 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...);
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74
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75
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76 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
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77 ngx_http_xslt_filter_ctx_t *ctx);
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78 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r,
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79 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params);
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394
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80 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s);
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81 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s);
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392
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82 static void ngx_http_xslt_cleanup(void *data);
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83
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84 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd,
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85 void *conf);
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86 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd,
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87 void *conf);
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394
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88 static void ngx_http_xslt_cleanup_dtd(void *data);
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392
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89 static void ngx_http_xslt_cleanup_stylesheet(void *data);
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394
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90 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf);
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392
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91 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf);
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92 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent,
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93 void *child);
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94 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf);
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400
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95 static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle);
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392
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96
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97
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98 ngx_str_t ngx_http_xslt_default_types[] = {
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99 ngx_string("text/xml"),
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100 ngx_null_string
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101 };
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102
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103
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104 static ngx_command_t ngx_http_xslt_filter_commands[] = {
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105
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106 { ngx_string("xml_entities"),
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107 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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392
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108 ngx_http_xslt_entities,
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109 NGX_HTTP_LOC_CONF_OFFSET,
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110 0,
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111 NULL },
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112
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113 { ngx_string("xslt_stylesheet"),
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394
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114 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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392
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115 ngx_http_xslt_stylesheet,
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116 NGX_HTTP_LOC_CONF_OFFSET,
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117 0,
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118 NULL },
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119
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120 { ngx_string("xslt_types"),
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394
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121 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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392
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122 ngx_http_types_slot,
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123 NGX_HTTP_LOC_CONF_OFFSET,
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394
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124 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys),
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392
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125 &ngx_http_xslt_default_types[0] },
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126
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127 ngx_null_command
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128 };
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129
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130
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131 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = {
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132 NULL, /* preconfiguration */
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133 ngx_http_xslt_filter_init, /* postconfiguration */
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134
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394
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135 ngx_http_xslt_filter_create_main_conf, /* create main configuration */
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136 NULL, /* init main configuration */
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137
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138 NULL, /* create server configuration */
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139 NULL, /* merge server configuration */
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140
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141 ngx_http_xslt_filter_create_conf, /* create location configuration */
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142 ngx_http_xslt_filter_merge_conf /* merge location configuration */
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143 };
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144
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145
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146 ngx_module_t ngx_http_xslt_filter_module = {
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147 NGX_MODULE_V1,
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148 &ngx_http_xslt_filter_module_ctx, /* module context */
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149 ngx_http_xslt_filter_commands, /* module directives */
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150 NGX_HTTP_MODULE, /* module type */
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151 NULL, /* init master */
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152 NULL, /* init module */
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153 NULL, /* init process */
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154 NULL, /* init thread */
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155 NULL, /* exit thread */
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508
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156 ngx_http_xslt_filter_exit, /* exit process */
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400
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157 ngx_http_xslt_filter_exit, /* exit master */
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392
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158 NGX_MODULE_V1_PADDING
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159 };
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160
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161
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162 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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163 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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164
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165
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166 static ngx_int_t
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167 ngx_http_xslt_header_filter(ngx_http_request_t *r)
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168 {
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169 ngx_http_xslt_filter_ctx_t *ctx;
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170 ngx_http_xslt_filter_loc_conf_t *conf;
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392
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171
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172 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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173 "xslt filter header");
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174
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175 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
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176 return ngx_http_next_header_filter(r);
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177 }
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178
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179 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
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180
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181 if (conf->sheets.nelts == 0
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394
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182 || ngx_http_test_content_type(r, &conf->types) == NULL)
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392
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183 {
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184 return ngx_http_next_header_filter(r);
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185 }
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186
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187 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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188
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189 if (ctx) {
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190 return ngx_http_next_header_filter(r);
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191 }
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192
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193 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t));
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194 if (ctx == NULL) {
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195 return NGX_ERROR;
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196 }
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197
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198 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module);
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199
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200 r->main_filter_need_in_memory = 1;
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201
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202 return NGX_OK;
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203 }
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204
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205
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206 static ngx_int_t
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207 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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208 {
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209 int wellFormed;
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210 ngx_chain_t *cl;
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211 ngx_http_xslt_filter_ctx_t *ctx;
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212
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213 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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214 "xslt filter body");
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215
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216 if (in == NULL) {
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217 return ngx_http_next_body_filter(r, in);
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218 }
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219
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220 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module);
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221
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222 if (ctx == NULL || ctx->done) {
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223 return ngx_http_next_body_filter(r, in);
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224 }
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225
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226 for (cl = in; cl; cl = cl->next) {
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227
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228 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) {
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229
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582
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230 if (ctx->ctxt->myDoc) {
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231
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232 #if (NGX_HTTP_XSLT_REUSE_DTD)
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233 ctx->ctxt->myDoc->extSubset = NULL;
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234 #endif
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235 xmlFreeDoc(ctx->ctxt->myDoc);
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236 }
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237
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238 xmlFreeParserCtxt(ctx->ctxt);
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239
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240 return ngx_http_xslt_send(r, ctx, NULL);
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241 }
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242
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243 if (cl->buf->last_buf || cl->buf->last_in_chain) {
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244
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245 ctx->doc = ctx->ctxt->myDoc;
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246
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247 #if (NGX_HTTP_XSLT_REUSE_DTD)
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248 ctx->doc->extSubset = NULL;
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249 #endif
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250
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251 wellFormed = ctx->ctxt->wellFormed;
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252
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253 xmlFreeParserCtxt(ctx->ctxt);
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254
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508
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255 if (wellFormed) {
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256 return ngx_http_xslt_send(r, ctx,
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257 ngx_http_xslt_apply_stylesheet(r, ctx));
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258 }
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259
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260 xmlFreeDoc(ctx->doc);
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261
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262 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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263 "not well formed XML document");
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264
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265 return ngx_http_xslt_send(r, ctx, NULL);
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266 }
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267 }
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268
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269 return NGX_OK;
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270 }
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271
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272
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273 static ngx_int_t
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274 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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275 ngx_buf_t *b)
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276 {
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277 ngx_int_t rc;
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278 ngx_chain_t out;
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279 ngx_pool_cleanup_t *cln;
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280
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281 ctx->done = 1;
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282
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283 if (b == NULL) {
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488
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284 return ngx_http_filter_finalize_request(r, NULL,
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484
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285 NGX_HTTP_INTERNAL_SERVER_ERROR);
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392
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286 }
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287
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288 cln = ngx_pool_cleanup_add(r->pool, 0);
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289
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290 if (cln == NULL) {
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291 ngx_free(b->pos);
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488
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292 return ngx_http_filter_finalize_request(r, NULL,
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293 NGX_HTTP_INTERNAL_SERVER_ERROR);
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294 }
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295
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394
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296 if (r == r->main) {
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297 r->headers_out.content_length_n = b->last - b->pos;
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298
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394
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299 if (r->headers_out.content_length) {
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300 r->headers_out.content_length->hash = 0;
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301 r->headers_out.content_length = NULL;
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302 }
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303
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304 ngx_http_clear_last_modified(r);
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392
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305 }
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306
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307 rc = ngx_http_next_header_filter(r);
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308
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309 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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310 ngx_free(b->pos);
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311 return rc;
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312 }
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313
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314 cln->handler = ngx_http_xslt_cleanup;
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315 cln->data = b->pos;
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316
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317 out.buf = b;
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318 out.next = NULL;
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319
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320 return ngx_http_next_body_filter(r, &out);
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321 }
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322
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323
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324 static ngx_int_t
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325 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
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326 ngx_buf_t *b)
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327 {
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586
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328 int err;
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329 xmlParserCtxtPtr ctxt;
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392
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330
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331 if (ctx->ctxt == NULL) {
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332
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333 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
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334 if (ctxt == NULL) {
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335 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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336 "xmlCreatePushParserCtxt() failed");
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337 return NGX_ERROR;
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338 }
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339
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586
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340 ctxt->sax->externalSubset = ngx_http_xslt_sax_external_subset;
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341 ctxt->sax->setDocumentLocator = NULL;
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342 ctxt->sax->warning = NULL;
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343 ctxt->sax->error = ngx_http_xslt_sax_error;
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344 ctxt->sax->fatalError = ngx_http_xslt_sax_error;
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345 ctxt->sax->_private = ctx;
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392
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346 ctxt->replaceEntities = 1;
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347 ctxt->loadsubset = 1;
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348
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349 ctx->ctxt = ctxt;
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350 ctx->request = r;
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351 }
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352
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496
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353 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, (int) (b->last - b->pos),
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354 (b->last_buf) || (b->last_in_chain));
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392
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355
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356 if (err == 0) {
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357 b->pos = b->last;
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358 return NGX_OK;
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359 }
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360
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361 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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362 "xmlParseChunk() failed, error:%d", err);
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363
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364 return NGX_ERROR;
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365 }
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366
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367
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368 static void
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369 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name,
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370 const xmlChar *externalId, const xmlChar *systemId)
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371 {
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586
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372 xmlParserCtxtPtr ctxt = data;
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392
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373
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394
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374 xmlDocPtr doc;
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375 xmlDtdPtr dtd;
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376 ngx_http_request_t *r;
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586
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377 ngx_http_xslt_filter_ctx_t *ctx;
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394
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378 ngx_http_xslt_filter_loc_conf_t *conf;
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392
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379
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586
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380 ctx = ctxt->sax->_private;
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392
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381 r = ctx->request;
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|
|
382
|
|
|
383 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
|
384
|
|
|
385 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
386 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"",
|
|
|
387 name ? name : (xmlChar *) "",
|
|
|
388 externalId ? externalId : (xmlChar *) "",
|
|
|
389 systemId ? systemId : (xmlChar *) "");
|
|
|
390
|
|
586
|
391 doc = ctxt->myDoc;
|
|
392
|
392
|
|
|
393 #if (NGX_HTTP_XSLT_REUSE_DTD)
|
|
|
394
|
|
|
395 dtd = conf->dtd;
|
|
|
396
|
|
|
397 #else
|
|
|
398
|
|
|
399 dtd = xmlCopyDtd(conf->dtd);
|
|
|
400 if (dtd == NULL) {
|
|
|
401 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
402 "xmlCopyDtd() failed");
|
|
|
403 return;
|
|
|
404 }
|
|
|
405
|
|
|
406 if (doc->children == NULL) {
|
|
|
407 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd);
|
|
|
408
|
|
|
409 } else {
|
|
|
410 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd);
|
|
|
411 }
|
|
|
412
|
|
|
413 #endif
|
|
|
414
|
|
|
415 doc->extSubset = dtd;
|
|
|
416 }
|
|
|
417
|
|
|
418
|
|
|
419 static void ngx_cdecl
|
|
|
420 ngx_http_xslt_sax_error(void *data, const char *msg, ...)
|
|
|
421 {
|
|
586
|
422 xmlParserCtxtPtr ctxt = data;
|
|
392
|
423
|
|
586
|
424 size_t n;
|
|
|
425 va_list args;
|
|
|
426 ngx_http_xslt_filter_ctx_t *ctx;
|
|
|
427 u_char buf[NGX_MAX_ERROR_STR];
|
|
|
428
|
|
|
429 ctx = ctxt->sax->_private;
|
|
392
|
430
|
|
|
431 buf[0] = '\0';
|
|
|
432
|
|
|
433 va_start(args, msg);
|
|
|
434 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args);
|
|
|
435 va_end(args);
|
|
|
436
|
|
|
437 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ }
|
|
|
438
|
|
|
439 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
510
|
440 "libxml2 error: \"%*s\"", n + 1, buf);
|
|
392
|
441 }
|
|
|
442
|
|
|
443
|
|
|
444 static ngx_buf_t *
|
|
|
445 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r,
|
|
|
446 ngx_http_xslt_filter_ctx_t *ctx)
|
|
|
447 {
|
|
394
|
448 int len, rc, doc_type;
|
|
|
449 u_char *type, *encoding;
|
|
|
450 ngx_buf_t *b;
|
|
|
451 ngx_uint_t i;
|
|
|
452 xmlChar *buf;
|
|
|
453 xmlDocPtr doc, res;
|
|
|
454 ngx_http_xslt_sheet_t *sheet;
|
|
|
455 ngx_http_xslt_filter_loc_conf_t *conf;
|
|
392
|
456
|
|
|
457 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module);
|
|
|
458 sheet = conf->sheets.elts;
|
|
|
459 doc = ctx->doc;
|
|
|
460
|
|
|
461 /* preallocate array for 4 params */
|
|
|
462
|
|
|
463 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *))
|
|
|
464 != NGX_OK)
|
|
|
465 {
|
|
|
466 xmlFreeDoc(doc);
|
|
|
467 return NULL;
|
|
|
468 }
|
|
|
469
|
|
|
470 for (i = 0; i < conf->sheets.nelts; i++) {
|
|
|
471
|
|
|
472 if (ngx_http_xslt_params(r, ctx, &sheet[i].params) != NGX_OK) {
|
|
|
473 xmlFreeDoc(doc);
|
|
|
474 return NULL;
|
|
|
475 }
|
|
|
476
|
|
|
477 res = xsltApplyStylesheet(sheet[i].stylesheet, doc, ctx->params.elts);
|
|
|
478
|
|
|
479 xmlFreeDoc(doc);
|
|
|
480
|
|
|
481 if (res == NULL) {
|
|
|
482 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
483 "xsltApplyStylesheet() failed");
|
|
|
484 return NULL;
|
|
|
485 }
|
|
|
486
|
|
|
487 doc = res;
|
|
|
488
|
|
|
489 /* reset array elements */
|
|
|
490 ctx->params.nelts = 0;
|
|
|
491 }
|
|
|
492
|
|
394
|
493 /* there must be at least one stylesheet */
|
|
|
494
|
|
|
495 if (r == r->main) {
|
|
|
496 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet);
|
|
392
|
497
|
|
394
|
498 } else {
|
|
|
499 type = NULL;
|
|
|
500 }
|
|
|
501
|
|
|
502 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet);
|
|
|
503 doc_type = doc->type;
|
|
|
504
|
|
|
505 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
506 "xslt filter type: %d t:%s e:%s",
|
|
|
507 doc_type, type ? type : (u_char *) "(null)",
|
|
|
508 encoding ? encoding : (u_char *) "(null)");
|
|
392
|
509
|
|
|
510 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet);
|
|
|
511
|
|
|
512 xmlFreeDoc(doc);
|
|
|
513
|
|
|
514 if (rc != 0) {
|
|
|
515 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
516 "xsltSaveResultToString() failed");
|
|
|
517 return NULL;
|
|
|
518 }
|
|
|
519
|
|
|
520 if (len == 0) {
|
|
|
521 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
522 "xsltSaveResultToString() returned zero-length result");
|
|
|
523 return NULL;
|
|
|
524 }
|
|
|
525
|
|
|
526 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
527 if (b == NULL) {
|
|
|
528 ngx_free(buf);
|
|
|
529 return NULL;
|
|
|
530 }
|
|
|
531
|
|
|
532 b->pos = buf;
|
|
|
533 b->last = buf + len;
|
|
|
534 b->memory = 1;
|
|
|
535
|
|
394
|
536 if (encoding) {
|
|
|
537 r->headers_out.charset.len = ngx_strlen(encoding);
|
|
|
538 r->headers_out.charset.data = encoding;
|
|
|
539 }
|
|
|
540
|
|
|
541 if (r != r->main) {
|
|
|
542 return b;
|
|
|
543 }
|
|
|
544
|
|
496
|
545 b->last_buf = 1;
|
|
|
546
|
|
394
|
547 if (type) {
|
|
|
548 len = ngx_strlen(type);
|
|
|
549
|
|
|
550 r->headers_out.content_type_len = len;
|
|
|
551 r->headers_out.content_type.len = len;
|
|
|
552 r->headers_out.content_type.data = type;
|
|
|
553
|
|
|
554 } else if (doc_type == XML_HTML_DOCUMENT_NODE) {
|
|
|
555
|
|
|
556 r->headers_out.content_type_len = sizeof("text/html") - 1;
|
|
570
|
557 ngx_str_set(&r->headers_out.content_type, "text/html");
|
|
394
|
558 }
|
|
|
559
|
|
494
|
560 r->headers_out.content_type_lowcase = NULL;
|
|
|
561
|
|
392
|
562 return b;
|
|
|
563 }
|
|
|
564
|
|
|
565
|
|
|
566 static ngx_int_t
|
|
|
567 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx,
|
|
|
568 ngx_array_t *params)
|
|
|
569 {
|
|
464
|
570 u_char *p, *last, *value, *dst, *src, **s;
|
|
|
571 size_t len;
|
|
|
572 ngx_uint_t i;
|
|
|
573 ngx_str_t string;
|
|
|
574 ngx_http_complex_value_t *param;
|
|
392
|
575
|
|
|
576 param = params->elts;
|
|
|
577
|
|
|
578 for (i = 0; i < params->nelts; i++) {
|
|
|
579
|
|
464
|
580 if (ngx_http_complex_value(r, ¶m[i], &string) != NGX_OK) {
|
|
392
|
581 return NGX_ERROR;
|
|
|
582 }
|
|
|
583
|
|
|
584 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
585 "xslt filter param: \"%s\"", string.data);
|
|
|
586
|
|
|
587 p = string.data;
|
|
464
|
588 last = string.data + string.len - 1;
|
|
392
|
589
|
|
|
590 while (p && *p) {
|
|
|
591
|
|
|
592 value = p;
|
|
|
593 p = (u_char *) ngx_strchr(p, '=');
|
|
|
594 if (p == NULL) {
|
|
|
595 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
596 "invalid libxslt parameter \"%s\"", value);
|
|
|
597 return NGX_ERROR;
|
|
|
598 }
|
|
|
599 *p++ = '\0';
|
|
|
600
|
|
|
601 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
602 "xslt filter param name: \"%s\"", value);
|
|
|
603
|
|
|
604 s = ngx_array_push(&ctx->params);
|
|
|
605 if (s == NULL) {
|
|
|
606 return NGX_ERROR;
|
|
|
607 }
|
|
|
608
|
|
|
609 *s = value;
|
|
|
610
|
|
|
611 value = p;
|
|
|
612 p = (u_char *) ngx_strchr(p, ':');
|
|
|
613
|
|
|
614 if (p) {
|
|
|
615 len = p - value;
|
|
|
616 *p++ = '\0';
|
|
|
617
|
|
|
618 } else {
|
|
|
619 len = last - value;
|
|
|
620 }
|
|
|
621
|
|
|
622 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
623 "xslt filter param value: \"%s\"", value);
|
|
|
624
|
|
|
625 dst = value;
|
|
|
626 src = value;
|
|
|
627
|
|
|
628 ngx_unescape_uri(&dst, &src, len, 0);
|
|
|
629
|
|
|
630 *dst = '\0';
|
|
|
631
|
|
|
632 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
633 "xslt filter param unescaped: \"%s\"", value);
|
|
|
634
|
|
|
635 s = ngx_array_push(&ctx->params);
|
|
|
636 if (s == NULL) {
|
|
|
637 return NGX_ERROR;
|
|
|
638 }
|
|
|
639
|
|
|
640 *s = value;
|
|
|
641 }
|
|
|
642 }
|
|
|
643
|
|
|
644 s = ngx_array_push(&ctx->params);
|
|
|
645 if (s == NULL) {
|
|
|
646 return NGX_ERROR;
|
|
|
647 }
|
|
|
648
|
|
|
649 *s = NULL;
|
|
|
650
|
|
|
651 return NGX_OK;
|
|
|
652 }
|
|
|
653
|
|
|
654
|
|
394
|
655 static u_char *
|
|
|
656 ngx_http_xslt_content_type(xsltStylesheetPtr s)
|
|
|
657 {
|
|
|
658 u_char *type;
|
|
|
659
|
|
|
660 if (s->mediaType) {
|
|
|
661 return s->mediaType;
|
|
|
662 }
|
|
|
663
|
|
|
664 for (s = s->imports; s; s = s->next) {
|
|
|
665
|
|
|
666 type = ngx_http_xslt_content_type(s);
|
|
|
667
|
|
|
668 if (type) {
|
|
|
669 return type;
|
|
|
670 }
|
|
|
671 }
|
|
|
672
|
|
|
673 return NULL;
|
|
|
674 }
|
|
|
675
|
|
|
676
|
|
|
677 static u_char *
|
|
|
678 ngx_http_xslt_encoding(xsltStylesheetPtr s)
|
|
|
679 {
|
|
|
680 u_char *encoding;
|
|
|
681
|
|
|
682 if (s->encoding) {
|
|
|
683 return s->encoding;
|
|
|
684 }
|
|
|
685
|
|
|
686 for (s = s->imports; s; s = s->next) {
|
|
|
687
|
|
|
688 encoding = ngx_http_xslt_encoding(s);
|
|
|
689
|
|
|
690 if (encoding) {
|
|
|
691 return encoding;
|
|
|
692 }
|
|
|
693 }
|
|
|
694
|
|
|
695 return NULL;
|
|
|
696 }
|
|
|
697
|
|
|
698
|
|
392
|
699 static void
|
|
|
700 ngx_http_xslt_cleanup(void *data)
|
|
|
701 {
|
|
|
702 ngx_free(data);
|
|
|
703 }
|
|
|
704
|
|
|
705
|
|
|
706 static char *
|
|
|
707 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
708 {
|
|
394
|
709 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
|
392
|
710
|
|
394
|
711 ngx_str_t *value;
|
|
|
712 ngx_uint_t i;
|
|
|
713 ngx_pool_cleanup_t *cln;
|
|
|
714 ngx_http_xslt_file_t *file;
|
|
|
715 ngx_http_xslt_filter_main_conf_t *xmcf;
|
|
392
|
716
|
|
|
717 if (xlcf->dtd) {
|
|
|
718 return "is duplicate";
|
|
|
719 }
|
|
|
720
|
|
|
721 value = cf->args->elts;
|
|
|
722
|
|
394
|
723 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
|
724
|
|
|
725 file = xmcf->dtd_files.elts;
|
|
|
726 for (i = 0; i < xmcf->dtd_files.nelts; i++) {
|
|
|
727 if (ngx_strcmp(file[i].name, &value[1].data) == 0) {
|
|
|
728 xlcf->dtd = file[i].data;
|
|
|
729 return NGX_CONF_OK;
|
|
|
730 }
|
|
|
731 }
|
|
|
732
|
|
|
733 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
|
734 if (cln == NULL) {
|
|
|
735 return NGX_CONF_ERROR;
|
|
|
736 }
|
|
|
737
|
|
392
|
738 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data);
|
|
|
739
|
|
|
740 if (xlcf->dtd == NULL) {
|
|
|
741 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed");
|
|
|
742 return NGX_CONF_ERROR;
|
|
|
743 }
|
|
|
744
|
|
394
|
745 cln->handler = ngx_http_xslt_cleanup_dtd;
|
|
|
746 cln->data = xlcf->dtd;
|
|
|
747
|
|
|
748 file = ngx_array_push(&xmcf->dtd_files);
|
|
|
749 if (file == NULL) {
|
|
|
750 return NGX_CONF_ERROR;
|
|
|
751 }
|
|
|
752
|
|
|
753 file->name = value[1].data;
|
|
|
754 file->data = xlcf->dtd;
|
|
|
755
|
|
392
|
756 return NGX_CONF_OK;
|
|
|
757 }
|
|
|
758
|
|
|
759
|
|
|
760
|
|
|
761 static char *
|
|
|
762 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
763 {
|
|
394
|
764 ngx_http_xslt_filter_loc_conf_t *xlcf = conf;
|
|
392
|
765
|
|
394
|
766 ngx_str_t *value;
|
|
|
767 ngx_uint_t i, n;
|
|
|
768 ngx_pool_cleanup_t *cln;
|
|
|
769 ngx_http_xslt_file_t *file;
|
|
|
770 ngx_http_xslt_sheet_t *sheet;
|
|
464
|
771 ngx_http_complex_value_t *param;
|
|
|
772 ngx_http_compile_complex_value_t ccv;
|
|
394
|
773 ngx_http_xslt_filter_main_conf_t *xmcf;
|
|
392
|
774
|
|
|
775 value = cf->args->elts;
|
|
|
776
|
|
|
777 if (xlcf->sheets.elts == NULL) {
|
|
|
778 if (ngx_array_init(&xlcf->sheets, cf->pool, 1,
|
|
|
779 sizeof(ngx_http_xslt_sheet_t))
|
|
|
780 != NGX_OK)
|
|
|
781 {
|
|
|
782 return NGX_CONF_ERROR;
|
|
|
783 }
|
|
|
784 }
|
|
|
785
|
|
|
786 sheet = ngx_array_push(&xlcf->sheets);
|
|
|
787 if (sheet == NULL) {
|
|
|
788 return NGX_CONF_ERROR;
|
|
|
789 }
|
|
|
790
|
|
|
791 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t));
|
|
|
792
|
|
|
793 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) {
|
|
|
794 return NGX_CONF_ERROR;
|
|
|
795 }
|
|
|
796
|
|
394
|
797 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module);
|
|
|
798
|
|
|
799 file = xmcf->sheet_files.elts;
|
|
|
800 for (i = 0; i < xmcf->sheet_files.nelts; i++) {
|
|
|
801 if (ngx_strcmp(file[i].name, &value[1].data) == 0) {
|
|
|
802 sheet->stylesheet = file[i].data;
|
|
|
803 goto found;
|
|
|
804 }
|
|
|
805 }
|
|
|
806
|
|
392
|
807 cln = ngx_pool_cleanup_add(cf->pool, 0);
|
|
|
808 if (cln == NULL) {
|
|
|
809 return NGX_CONF_ERROR;
|
|
|
810 }
|
|
|
811
|
|
|
812 sheet->stylesheet = xsltParseStylesheetFile(value[1].data);
|
|
|
813 if (sheet->stylesheet == NULL) {
|
|
|
814 ngx_conf_log_error(NGX_LOG_ERR, cf, 0,
|
|
|
815 "xsltParseStylesheetFile(\"%s\") failed",
|
|
|
816 value[1].data);
|
|
|
817 return NGX_CONF_ERROR;
|
|
|
818 }
|
|
|
819
|
|
|
820 cln->handler = ngx_http_xslt_cleanup_stylesheet;
|
|
|
821 cln->data = sheet->stylesheet;
|
|
|
822
|
|
394
|
823 file = ngx_array_push(&xmcf->sheet_files);
|
|
|
824 if (file == NULL) {
|
|
|
825 return NGX_CONF_ERROR;
|
|
|
826 }
|
|
|
827
|
|
|
828 file->name = value[1].data;
|
|
|
829 file->data = sheet->stylesheet;
|
|
|
830
|
|
|
831 found:
|
|
|
832
|
|
392
|
833 n = cf->args->nelts;
|
|
|
834
|
|
|
835 if (n == 2) {
|
|
|
836 return NGX_CONF_OK;
|
|
|
837 }
|
|
|
838
|
|
|
839 if (ngx_array_init(&sheet->params, cf->pool, n - 2,
|
|
464
|
840 sizeof(ngx_http_complex_value_t))
|
|
392
|
841 != NGX_OK)
|
|
|
842 {
|
|
|
843 return NGX_CONF_ERROR;
|
|
|
844 }
|
|
|
845
|
|
|
846 for (i = 2; i < n; i++) {
|
|
|
847
|
|
|
848 param = ngx_array_push(&sheet->params);
|
|
|
849 if (param == NULL) {
|
|
|
850 return NGX_CONF_ERROR;
|
|
|
851 }
|
|
|
852
|
|
464
|
853 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
392
|
854
|
|
464
|
855 ccv.cf = cf;
|
|
|
856 ccv.value = &value[i];
|
|
|
857 ccv.complex_value = param;
|
|
|
858 ccv.zero = 1;
|
|
392
|
859
|
|
464
|
860 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
392
|
861 return NGX_CONF_ERROR;
|
|
|
862 }
|
|
|
863 }
|
|
|
864
|
|
|
865 return NGX_CONF_OK;
|
|
|
866 }
|
|
|
867
|
|
|
868
|
|
|
869 static void
|
|
394
|
870 ngx_http_xslt_cleanup_dtd(void *data)
|
|
|
871 {
|
|
|
872 xmlFreeDtd(data);
|
|
|
873 }
|
|
|
874
|
|
|
875
|
|
|
876 static void
|
|
392
|
877 ngx_http_xslt_cleanup_stylesheet(void *data)
|
|
|
878 {
|
|
394
|
879 xsltFreeStylesheet(data);
|
|
392
|
880 }
|
|
|
881
|
|
|
882
|
|
394
|
883 static void *
|
|
|
884 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf)
|
|
|
885 {
|
|
|
886 ngx_http_xslt_filter_main_conf_t *conf;
|
|
|
887
|
|
|
888 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t));
|
|
|
889 if (conf == NULL) {
|
|
496
|
890 return NULL;
|
|
394
|
891 }
|
|
|
892
|
|
|
893 if (ngx_array_init(&conf->dtd_files, cf->pool, 1,
|
|
|
894 sizeof(ngx_http_xslt_file_t))
|
|
|
895 != NGX_OK)
|
|
|
896 {
|
|
|
897 return NULL;
|
|
|
898 }
|
|
|
899
|
|
|
900 if (ngx_array_init(&conf->sheet_files, cf->pool, 1,
|
|
|
901 sizeof(ngx_http_xslt_file_t))
|
|
|
902 != NGX_OK)
|
|
|
903 {
|
|
|
904 return NULL;
|
|
|
905 }
|
|
|
906
|
|
|
907 return conf;
|
|
|
908 }
|
|
|
909
|
|
392
|
910
|
|
|
911 static void *
|
|
|
912 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf)
|
|
|
913 {
|
|
394
|
914 ngx_http_xslt_filter_loc_conf_t *conf;
|
|
392
|
915
|
|
394
|
916 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t));
|
|
392
|
917 if (conf == NULL) {
|
|
496
|
918 return NULL;
|
|
392
|
919 }
|
|
|
920
|
|
|
921 /*
|
|
|
922 * set by ngx_pcalloc():
|
|
|
923 *
|
|
394
|
924 * conf->dtd = NULL;
|
|
|
925 * conf->sheets = { NULL };
|
|
|
926 * conf->types = { NULL };
|
|
|
927 * conf->types_keys = NULL;
|
|
392
|
928 */
|
|
|
929
|
|
|
930 return conf;
|
|
|
931 }
|
|
|
932
|
|
|
933
|
|
|
934 static char *
|
|
|
935 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
936 {
|
|
394
|
937 ngx_http_xslt_filter_loc_conf_t *prev = parent;
|
|
|
938 ngx_http_xslt_filter_loc_conf_t *conf = child;
|
|
392
|
939
|
|
|
940 if (conf->dtd == NULL) {
|
|
|
941 conf->dtd = prev->dtd;
|
|
|
942 }
|
|
|
943
|
|
|
944 if (conf->sheets.nelts == 0) {
|
|
|
945 conf->sheets = prev->sheets;
|
|
|
946 }
|
|
|
947
|
|
554
|
948 if (ngx_http_merge_types(cf, &conf->types_keys, &conf->types,
|
|
|
949 &prev->types_keys, &prev->types,
|
|
394
|
950 ngx_http_xslt_default_types)
|
|
392
|
951 != NGX_OK)
|
|
|
952 {
|
|
|
953 return NGX_CONF_ERROR;
|
|
|
954 }
|
|
|
955
|
|
|
956 return NGX_CONF_OK;
|
|
|
957 }
|
|
|
958
|
|
|
959
|
|
|
960 static ngx_int_t
|
|
|
961 ngx_http_xslt_filter_init(ngx_conf_t *cf)
|
|
|
962 {
|
|
|
963 xmlInitParser();
|
|
|
964
|
|
418
|
965 #if (NGX_HAVE_EXSLT)
|
|
|
966 exsltRegisterAll();
|
|
|
967 #endif
|
|
|
968
|
|
392
|
969 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
970 ngx_http_top_header_filter = ngx_http_xslt_header_filter;
|
|
|
971
|
|
|
972 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
973 ngx_http_top_body_filter = ngx_http_xslt_body_filter;
|
|
|
974
|
|
|
975 return NGX_OK;
|
|
|
976 }
|
|
|
977
|
|
|
978
|
|
|
979 static void
|
|
|
980 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle)
|
|
|
981 {
|
|
|
982 xsltCleanupGlobals();
|
|
|
983 xmlCleanupParser();
|
|
|
984 }
|
