Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 5499:b91bcba29351
Added per-process random seeding (ticket #456).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Sat, 04 Jan 2014 03:32:06 +0400 |
parents | 314c3d7cc3a5 |
children | e491b26fa5a1 |
rev | line source |
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2139 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
2139 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 #include <libxml/parser.h> | |
13 #include <libxml/tree.h> | |
14 #include <libxslt/xslt.h> | |
15 #include <libxslt/xsltInternals.h> | |
16 #include <libxslt/transform.h> | |
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17 #include <libxslt/variables.h> |
2139 | 18 #include <libxslt/xsltutils.h> |
19 | |
2299 | 20 #if (NGX_HAVE_EXSLT) |
21 #include <libexslt/exslt.h> | |
22 #endif | |
23 | |
2139 | 24 |
25 #ifndef NGX_HTTP_XSLT_REUSE_DTD | |
26 #define NGX_HTTP_XSLT_REUSE_DTD 1 | |
27 #endif | |
28 | |
29 | |
30 typedef struct { | |
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31 u_char *name; |
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32 void *data; |
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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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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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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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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 */ |
2139 | 52 } ngx_http_xslt_sheet_t; |
53 | |
54 | |
55 typedef struct { | |
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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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61 ngx_flag_t last_modified; |
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62 } ngx_http_xslt_filter_loc_conf_t; |
2139 | 63 |
64 | |
65 typedef struct { | |
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66 xmlDocPtr doc; |
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67 xmlParserCtxtPtr ctxt; |
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68 xsltTransformContextPtr transform; |
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69 ngx_http_request_t *request; |
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70 ngx_array_t params; |
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71 |
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72 ngx_uint_t done; /* unsigned done:1; */ |
2139 | 73 } ngx_http_xslt_filter_ctx_t; |
74 | |
75 | |
76 static ngx_int_t ngx_http_xslt_send(ngx_http_request_t *r, | |
77 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
78 static ngx_int_t ngx_http_xslt_add_chunk(ngx_http_request_t *r, | |
79 ngx_http_xslt_filter_ctx_t *ctx, ngx_buf_t *b); | |
80 | |
81 | |
82 static void ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
83 const xmlChar *externalId, const xmlChar *systemId); | |
84 static void ngx_cdecl ngx_http_xslt_sax_error(void *data, const char *msg, ...); | |
85 | |
86 | |
87 static ngx_buf_t *ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
88 ngx_http_xslt_filter_ctx_t *ctx); | |
89 static ngx_int_t ngx_http_xslt_params(ngx_http_request_t *r, | |
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90 ngx_http_xslt_filter_ctx_t *ctx, ngx_array_t *params, ngx_uint_t final); |
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91 static u_char *ngx_http_xslt_content_type(xsltStylesheetPtr s); |
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92 static u_char *ngx_http_xslt_encoding(xsltStylesheetPtr s); |
2139 | 93 static void ngx_http_xslt_cleanup(void *data); |
94 | |
95 static char *ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, | |
96 void *conf); | |
97 static char *ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, | |
98 void *conf); | |
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99 static char *ngx_http_xslt_param(ngx_conf_t *cf, ngx_command_t *cmd, |
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100 void *conf); |
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101 static void ngx_http_xslt_cleanup_dtd(void *data); |
2139 | 102 static void ngx_http_xslt_cleanup_stylesheet(void *data); |
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103 static void *ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf); |
2139 | 104 static void *ngx_http_xslt_filter_create_conf(ngx_conf_t *cf); |
105 static char *ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
106 void *child); | |
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107 static ngx_int_t ngx_http_xslt_filter_preconfiguration(ngx_conf_t *cf); |
2139 | 108 static ngx_int_t ngx_http_xslt_filter_init(ngx_conf_t *cf); |
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109 static void ngx_http_xslt_filter_exit(ngx_cycle_t *cycle); |
2139 | 110 |
111 | |
112 ngx_str_t ngx_http_xslt_default_types[] = { | |
113 ngx_string("text/xml"), | |
114 ngx_null_string | |
115 }; | |
116 | |
117 | |
118 static ngx_command_t ngx_http_xslt_filter_commands[] = { | |
119 | |
120 { ngx_string("xml_entities"), | |
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121 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
2139 | 122 ngx_http_xslt_entities, |
123 NGX_HTTP_LOC_CONF_OFFSET, | |
124 0, | |
125 NULL }, | |
126 | |
127 { ngx_string("xslt_stylesheet"), | |
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128 NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
2139 | 129 ngx_http_xslt_stylesheet, |
130 NGX_HTTP_LOC_CONF_OFFSET, | |
131 0, | |
132 NULL }, | |
133 | |
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134 { ngx_string("xslt_param"), |
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135 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, |
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136 ngx_http_xslt_param, |
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137 NGX_HTTP_LOC_CONF_OFFSET, |
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138 0, |
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139 NULL }, |
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140 |
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141 { ngx_string("xslt_string_param"), |
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142 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, |
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143 ngx_http_xslt_param, |
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144 NGX_HTTP_LOC_CONF_OFFSET, |
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145 0, |
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146 (void *) 1 }, |
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147 |
2139 | 148 { ngx_string("xslt_types"), |
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149 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
2139 | 150 ngx_http_types_slot, |
151 NGX_HTTP_LOC_CONF_OFFSET, | |
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152 offsetof(ngx_http_xslt_filter_loc_conf_t, types_keys), |
2139 | 153 &ngx_http_xslt_default_types[0] }, |
154 | |
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155 { ngx_string("xslt_last_modified"), |
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156 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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157 ngx_conf_set_flag_slot, |
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158 NGX_HTTP_LOC_CONF_OFFSET, |
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159 offsetof(ngx_http_xslt_filter_loc_conf_t, last_modified), |
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160 NULL }, |
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161 |
2139 | 162 ngx_null_command |
163 }; | |
164 | |
165 | |
166 static ngx_http_module_t ngx_http_xslt_filter_module_ctx = { | |
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167 ngx_http_xslt_filter_preconfiguration, /* preconfiguration */ |
2139 | 168 ngx_http_xslt_filter_init, /* postconfiguration */ |
169 | |
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170 ngx_http_xslt_filter_create_main_conf, /* create main configuration */ |
2139 | 171 NULL, /* init main configuration */ |
172 | |
173 NULL, /* create server configuration */ | |
174 NULL, /* merge server configuration */ | |
175 | |
176 ngx_http_xslt_filter_create_conf, /* create location configuration */ | |
177 ngx_http_xslt_filter_merge_conf /* merge location configuration */ | |
178 }; | |
179 | |
180 | |
181 ngx_module_t ngx_http_xslt_filter_module = { | |
182 NGX_MODULE_V1, | |
183 &ngx_http_xslt_filter_module_ctx, /* module context */ | |
184 ngx_http_xslt_filter_commands, /* module directives */ | |
185 NGX_HTTP_MODULE, /* module type */ | |
186 NULL, /* init master */ | |
187 NULL, /* init module */ | |
188 NULL, /* init process */ | |
189 NULL, /* init thread */ | |
190 NULL, /* exit thread */ | |
2983 | 191 ngx_http_xslt_filter_exit, /* exit process */ |
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192 ngx_http_xslt_filter_exit, /* exit master */ |
2139 | 193 NGX_MODULE_V1_PADDING |
194 }; | |
195 | |
196 | |
197 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
198 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
199 | |
200 | |
201 static ngx_int_t | |
202 ngx_http_xslt_header_filter(ngx_http_request_t *r) | |
203 { | |
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204 ngx_http_xslt_filter_ctx_t *ctx; |
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205 ngx_http_xslt_filter_loc_conf_t *conf; |
2139 | 206 |
207 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
208 "xslt filter header"); | |
209 | |
210 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
211 return ngx_http_next_header_filter(r); | |
212 } | |
213 | |
214 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
215 | |
216 if (conf->sheets.nelts == 0 | |
2148 | 217 || ngx_http_test_content_type(r, &conf->types) == NULL) |
2139 | 218 { |
219 return ngx_http_next_header_filter(r); | |
220 } | |
221 | |
222 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
223 | |
224 if (ctx) { | |
225 return ngx_http_next_header_filter(r); | |
226 } | |
227 | |
228 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_xslt_filter_ctx_t)); | |
229 if (ctx == NULL) { | |
230 return NGX_ERROR; | |
231 } | |
232 | |
233 ngx_http_set_ctx(r, ctx, ngx_http_xslt_filter_module); | |
234 | |
235 r->main_filter_need_in_memory = 1; | |
236 | |
237 return NGX_OK; | |
238 } | |
239 | |
240 | |
241 static ngx_int_t | |
242 ngx_http_xslt_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
243 { | |
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244 int wellFormed; |
2139 | 245 ngx_chain_t *cl; |
246 ngx_http_xslt_filter_ctx_t *ctx; | |
247 | |
248 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
249 "xslt filter body"); | |
250 | |
251 if (in == NULL) { | |
252 return ngx_http_next_body_filter(r, in); | |
253 } | |
254 | |
255 ctx = ngx_http_get_module_ctx(r, ngx_http_xslt_filter_module); | |
256 | |
257 if (ctx == NULL || ctx->done) { | |
258 return ngx_http_next_body_filter(r, in); | |
259 } | |
260 | |
261 for (cl = in; cl; cl = cl->next) { | |
262 | |
263 if (ngx_http_xslt_add_chunk(r, ctx, cl->buf) != NGX_OK) { | |
264 | |
3642 | 265 if (ctx->ctxt->myDoc) { |
2139 | 266 |
267 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
268 ctx->ctxt->myDoc->extSubset = NULL; | |
269 #endif | |
270 xmlFreeDoc(ctx->ctxt->myDoc); | |
271 } | |
272 | |
273 xmlFreeParserCtxt(ctx->ctxt); | |
274 | |
275 return ngx_http_xslt_send(r, ctx, NULL); | |
276 } | |
277 | |
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278 if (cl->buf->last_buf || cl->buf->last_in_chain) { |
2139 | 279 |
280 ctx->doc = ctx->ctxt->myDoc; | |
281 | |
282 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
283 ctx->doc->extSubset = NULL; | |
284 #endif | |
285 | |
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286 wellFormed = ctx->ctxt->wellFormed; |
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287 |
2139 | 288 xmlFreeParserCtxt(ctx->ctxt); |
289 | |
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290 if (wellFormed) { |
2139 | 291 return ngx_http_xslt_send(r, ctx, |
292 ngx_http_xslt_apply_stylesheet(r, ctx)); | |
293 } | |
294 | |
295 xmlFreeDoc(ctx->doc); | |
296 | |
297 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
298 "not well formed XML document"); | |
299 | |
300 return ngx_http_xslt_send(r, ctx, NULL); | |
301 } | |
302 } | |
303 | |
304 return NGX_OK; | |
305 } | |
306 | |
307 | |
308 static ngx_int_t | |
309 ngx_http_xslt_send(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
310 ngx_buf_t *b) | |
311 { | |
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312 ngx_int_t rc; |
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313 ngx_chain_t out; |
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314 ngx_pool_cleanup_t *cln; |
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315 ngx_http_xslt_filter_loc_conf_t *conf; |
2139 | 316 |
317 ctx->done = 1; | |
318 | |
319 if (b == NULL) { | |
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320 return ngx_http_filter_finalize_request(r, &ngx_http_xslt_filter_module, |
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321 NGX_HTTP_INTERNAL_SERVER_ERROR); |
2139 | 322 } |
323 | |
324 cln = ngx_pool_cleanup_add(r->pool, 0); | |
325 | |
326 if (cln == NULL) { | |
327 ngx_free(b->pos); | |
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328 return ngx_http_filter_finalize_request(r, &ngx_http_xslt_filter_module, |
2139 | 329 NGX_HTTP_INTERNAL_SERVER_ERROR); |
330 } | |
331 | |
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332 if (r == r->main) { |
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333 r->headers_out.content_length_n = b->last - b->pos; |
2139 | 334 |
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335 if (r->headers_out.content_length) { |
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336 r->headers_out.content_length->hash = 0; |
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337 r->headers_out.content_length = NULL; |
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338 } |
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339 |
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340 ngx_http_clear_etag(r); |
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341 |
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342 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); |
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343 |
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344 if (!conf->last_modified) { |
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345 ngx_http_clear_last_modified(r); |
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346 } |
2139 | 347 } |
348 | |
349 rc = ngx_http_next_header_filter(r); | |
350 | |
351 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
352 ngx_free(b->pos); | |
353 return rc; | |
354 } | |
355 | |
356 cln->handler = ngx_http_xslt_cleanup; | |
357 cln->data = b->pos; | |
358 | |
359 out.buf = b; | |
360 out.next = NULL; | |
361 | |
362 return ngx_http_next_body_filter(r, &out); | |
363 } | |
364 | |
365 | |
366 static ngx_int_t | |
367 ngx_http_xslt_add_chunk(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
368 ngx_buf_t *b) | |
369 { | |
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370 int err; |
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371 xmlParserCtxtPtr ctxt; |
2139 | 372 |
373 if (ctx->ctxt == NULL) { | |
374 | |
375 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL); | |
376 if (ctxt == NULL) { | |
377 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
378 "xmlCreatePushParserCtxt() failed"); | |
379 return NGX_ERROR; | |
380 } | |
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381 xmlCtxtUseOptions(ctxt, XML_PARSE_NOENT|XML_PARSE_DTDLOAD |
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382 |XML_PARSE_NOWARNING); |
2139 | 383 |
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384 ctxt->sax->externalSubset = ngx_http_xslt_sax_external_subset; |
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385 ctxt->sax->setDocumentLocator = NULL; |
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386 ctxt->sax->error = ngx_http_xslt_sax_error; |
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387 ctxt->sax->fatalError = ngx_http_xslt_sax_error; |
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388 ctxt->sax->_private = ctx; |
2139 | 389 |
390 ctx->ctxt = ctxt; | |
391 ctx->request = r; | |
392 } | |
393 | |
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394 err = xmlParseChunk(ctx->ctxt, (char *) b->pos, (int) (b->last - b->pos), |
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395 (b->last_buf) || (b->last_in_chain)); |
2139 | 396 |
397 if (err == 0) { | |
398 b->pos = b->last; | |
399 return NGX_OK; | |
400 } | |
401 | |
402 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
403 "xmlParseChunk() failed, error:%d", err); | |
404 | |
405 return NGX_ERROR; | |
406 } | |
407 | |
408 | |
409 static void | |
410 ngx_http_xslt_sax_external_subset(void *data, const xmlChar *name, | |
411 const xmlChar *externalId, const xmlChar *systemId) | |
412 { | |
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413 xmlParserCtxtPtr ctxt = data; |
2139 | 414 |
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415 xmlDocPtr doc; |
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416 xmlDtdPtr dtd; |
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417 ngx_http_request_t *r; |
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418 ngx_http_xslt_filter_ctx_t *ctx; |
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419 ngx_http_xslt_filter_loc_conf_t *conf; |
2139 | 420 |
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421 ctx = ctxt->sax->_private; |
2139 | 422 r = ctx->request; |
423 | |
424 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
425 | |
426 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
427 "xslt filter extSubset: \"%s\" \"%s\" \"%s\"", | |
428 name ? name : (xmlChar *) "", | |
429 externalId ? externalId : (xmlChar *) "", | |
430 systemId ? systemId : (xmlChar *) ""); | |
431 | |
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432 doc = ctxt->myDoc; |
2139 | 433 |
434 #if (NGX_HTTP_XSLT_REUSE_DTD) | |
435 | |
436 dtd = conf->dtd; | |
437 | |
438 #else | |
439 | |
440 dtd = xmlCopyDtd(conf->dtd); | |
441 if (dtd == NULL) { | |
442 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
443 "xmlCopyDtd() failed"); | |
444 return; | |
445 } | |
446 | |
447 if (doc->children == NULL) { | |
448 xmlAddChild((xmlNodePtr) doc, (xmlNodePtr) dtd); | |
449 | |
450 } else { | |
451 xmlAddPrevSibling(doc->children, (xmlNodePtr) dtd); | |
452 } | |
453 | |
454 #endif | |
455 | |
456 doc->extSubset = dtd; | |
457 } | |
458 | |
459 | |
460 static void ngx_cdecl | |
461 ngx_http_xslt_sax_error(void *data, const char *msg, ...) | |
462 { | |
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463 xmlParserCtxtPtr ctxt = data; |
2139 | 464 |
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465 size_t n; |
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466 va_list args; |
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467 ngx_http_xslt_filter_ctx_t *ctx; |
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468 u_char buf[NGX_MAX_ERROR_STR]; |
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469 |
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470 ctx = ctxt->sax->_private; |
2139 | 471 |
472 buf[0] = '\0'; | |
473 | |
474 va_start(args, msg); | |
475 n = (size_t) vsnprintf((char *) buf, NGX_MAX_ERROR_STR, msg, args); | |
476 va_end(args); | |
477 | |
478 while (--n && (buf[n] == CR || buf[n] == LF)) { /* void */ } | |
479 | |
480 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
2999 | 481 "libxml2 error: \"%*s\"", n + 1, buf); |
2139 | 482 } |
483 | |
484 | |
485 static ngx_buf_t * | |
486 ngx_http_xslt_apply_stylesheet(ngx_http_request_t *r, | |
487 ngx_http_xslt_filter_ctx_t *ctx) | |
488 { | |
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489 int len, rc, doc_type; |
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490 u_char *type, *encoding; |
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491 ngx_buf_t *b; |
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492 ngx_uint_t i; |
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493 xmlChar *buf; |
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494 xmlDocPtr doc, res; |
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495 ngx_http_xslt_sheet_t *sheet; |
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496 ngx_http_xslt_filter_loc_conf_t *conf; |
2139 | 497 |
498 conf = ngx_http_get_module_loc_conf(r, ngx_http_xslt_filter_module); | |
499 sheet = conf->sheets.elts; | |
500 doc = ctx->doc; | |
501 | |
502 /* preallocate array for 4 params */ | |
503 | |
504 if (ngx_array_init(&ctx->params, r->pool, 4 * 2 + 1, sizeof(char *)) | |
505 != NGX_OK) | |
506 { | |
507 xmlFreeDoc(doc); | |
508 return NULL; | |
509 } | |
510 | |
511 for (i = 0; i < conf->sheets.nelts; i++) { | |
512 | |
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513 ctx->transform = xsltNewTransformContext(sheet[i].stylesheet, doc); |
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514 if (ctx->transform == NULL) { |
2139 | 515 xmlFreeDoc(doc); |
516 return NULL; | |
517 } | |
518 | |
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519 if (conf->params |
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520 && ngx_http_xslt_params(r, ctx, conf->params, 0) != NGX_OK) |
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521 { |
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522 xsltFreeTransformContext(ctx->transform); |
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523 xmlFreeDoc(doc); |
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524 return NULL; |
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525 } |
2139 | 526 |
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527 if (ngx_http_xslt_params(r, ctx, &sheet[i].params, 1) != NGX_OK) { |
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528 xsltFreeTransformContext(ctx->transform); |
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529 xmlFreeDoc(doc); |
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530 return NULL; |
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531 } |
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532 |
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533 res = xsltApplyStylesheetUser(sheet[i].stylesheet, doc, |
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534 ctx->params.elts, NULL, NULL, |
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535 ctx->transform); |
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536 |
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537 xsltFreeTransformContext(ctx->transform); |
2139 | 538 xmlFreeDoc(doc); |
539 | |
540 if (res == NULL) { | |
541 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
542 "xsltApplyStylesheet() failed"); | |
543 return NULL; | |
544 } | |
545 | |
546 doc = res; | |
547 | |
548 /* reset array elements */ | |
549 ctx->params.nelts = 0; | |
550 } | |
551 | |
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552 /* there must be at least one stylesheet */ |
2139 | 553 |
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554 if (r == r->main) { |
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555 type = ngx_http_xslt_content_type(sheet[i - 1].stylesheet); |
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556 |
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557 } else { |
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558 type = NULL; |
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559 } |
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560 |
2153
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561 encoding = ngx_http_xslt_encoding(sheet[i - 1].stylesheet); |
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562 doc_type = doc->type; |
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563 |
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564 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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565 "xslt filter type: %d t:%s e:%s", |
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566 doc_type, type ? type : (u_char *) "(null)", |
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567 encoding ? encoding : (u_char *) "(null)"); |
2139 | 568 |
569 rc = xsltSaveResultToString(&buf, &len, doc, sheet[i - 1].stylesheet); | |
570 | |
571 xmlFreeDoc(doc); | |
572 | |
573 if (rc != 0) { | |
574 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
575 "xsltSaveResultToString() failed"); | |
576 return NULL; | |
577 } | |
578 | |
579 if (len == 0) { | |
580 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
581 "xsltSaveResultToString() returned zero-length result"); | |
582 return NULL; | |
583 } | |
584 | |
585 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
586 if (b == NULL) { | |
587 ngx_free(buf); | |
588 return NULL; | |
589 } | |
590 | |
591 b->pos = buf; | |
592 b->last = buf + len; | |
593 b->memory = 1; | |
594 | |
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595 if (encoding) { |
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596 r->headers_out.charset.len = ngx_strlen(encoding); |
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597 r->headers_out.charset.data = encoding; |
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598 } |
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599 |
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600 if (r != r->main) { |
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601 return b; |
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602 } |
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603 |
2899
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604 b->last_buf = 1; |
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605 |
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606 if (type) { |
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607 len = ngx_strlen(type); |
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608 |
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609 r->headers_out.content_type_len = len; |
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610 r->headers_out.content_type.len = len; |
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611 r->headers_out.content_type.data = type; |
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612 |
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613 } else if (doc_type == XML_HTML_DOCUMENT_NODE) { |
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614 |
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615 r->headers_out.content_type_len = sizeof("text/html") - 1; |
3516
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diff
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616 ngx_str_set(&r->headers_out.content_type, "text/html"); |
2153
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617 } |
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618 |
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619 r->headers_out.content_type_lowcase = NULL; |
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620 |
2139 | 621 return b; |
622 } | |
623 | |
624 | |
625 static ngx_int_t | |
626 ngx_http_xslt_params(ngx_http_request_t *r, ngx_http_xslt_filter_ctx_t *ctx, | |
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627 ngx_array_t *params, ngx_uint_t final) |
2139 | 628 { |
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629 u_char *p, *last, *value, *dst, *src, **s; |
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630 size_t len; |
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631 ngx_uint_t i; |
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632 ngx_str_t string; |
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633 ngx_http_xslt_param_t *param; |
2139 | 634 |
635 param = params->elts; | |
636 | |
637 for (i = 0; i < params->nelts; i++) { | |
638 | |
4554
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639 if (ngx_http_complex_value(r, ¶m[i].value, &string) != NGX_OK) { |
2139 | 640 return NGX_ERROR; |
641 } | |
642 | |
643 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
644 "xslt filter param: \"%s\"", string.data); | |
645 | |
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646 if (param[i].name) { |
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647 |
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648 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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649 "xslt filter param name: \"%s\"", param[i].name); |
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650 |
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651 if (param[i].quote) { |
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652 if (xsltQuoteOneUserParam(ctx->transform, param[i].name, |
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653 string.data) |
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654 != 0) |
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655 { |
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656 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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657 "xsltQuoteOneUserParam(\"%s\", \"%s\") failed", |
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658 param[i].name, string.data); |
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659 return NGX_ERROR; |
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660 } |
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|
661 |
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662 continue; |
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663 } |
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|
664 |
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665 s = ngx_array_push(&ctx->params); |
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666 if (s == NULL) { |
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667 return NGX_ERROR; |
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668 } |
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669 |
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670 *s = param[i].name; |
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671 |
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672 s = ngx_array_push(&ctx->params); |
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673 if (s == NULL) { |
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674 return NGX_ERROR; |
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675 } |
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676 |
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677 *s = string.data; |
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678 |
212a0251951b
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679 continue; |
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680 } |
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|
681 |
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|
682 /* |
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683 * parse param1=value1:param2=value2 syntax as used by parameters |
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684 * specified in xslt_stylesheet directives |
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685 */ |
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|
686 |
2139 | 687 p = string.data; |
4553
3dd8a403faa1
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4412
diff
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|
688 last = string.data + string.len; |
2139 | 689 |
690 while (p && *p) { | |
691 | |
692 value = p; | |
693 p = (u_char *) ngx_strchr(p, '='); | |
694 if (p == NULL) { | |
695 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
696 "invalid libxslt parameter \"%s\"", value); | |
697 return NGX_ERROR; | |
698 } | |
699 *p++ = '\0'; | |
700 | |
701 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
702 "xslt filter param name: \"%s\"", value); | |
703 | |
704 s = ngx_array_push(&ctx->params); | |
705 if (s == NULL) { | |
706 return NGX_ERROR; | |
707 } | |
708 | |
709 *s = value; | |
710 | |
711 value = p; | |
712 p = (u_char *) ngx_strchr(p, ':'); | |
713 | |
714 if (p) { | |
715 len = p - value; | |
716 *p++ = '\0'; | |
717 | |
718 } else { | |
719 len = last - value; | |
720 } | |
721 | |
722 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
723 "xslt filter param value: \"%s\"", value); | |
724 | |
725 dst = value; | |
726 src = value; | |
727 | |
728 ngx_unescape_uri(&dst, &src, len, 0); | |
729 | |
730 *dst = '\0'; | |
731 | |
732 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
733 "xslt filter param unescaped: \"%s\"", value); | |
734 | |
735 s = ngx_array_push(&ctx->params); | |
736 if (s == NULL) { | |
737 return NGX_ERROR; | |
738 } | |
739 | |
740 *s = value; | |
741 } | |
742 } | |
743 | |
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744 if (final) { |
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|
745 s = ngx_array_push(&ctx->params); |
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|
746 if (s == NULL) { |
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|
747 return NGX_ERROR; |
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748 } |
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|
749 |
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750 *s = NULL; |
2139 | 751 } |
752 | |
753 return NGX_OK; | |
754 } | |
755 | |
756 | |
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757 static u_char * |
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758 ngx_http_xslt_content_type(xsltStylesheetPtr s) |
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759 { |
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760 u_char *type; |
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761 |
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762 if (s->mediaType) { |
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763 return s->mediaType; |
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764 } |
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765 |
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766 for (s = s->imports; s; s = s->next) { |
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767 |
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768 type = ngx_http_xslt_content_type(s); |
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769 |
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770 if (type) { |
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771 return type; |
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772 } |
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773 } |
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774 |
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775 return NULL; |
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776 } |
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777 |
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778 |
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779 static u_char * |
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780 ngx_http_xslt_encoding(xsltStylesheetPtr s) |
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781 { |
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782 u_char *encoding; |
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783 |
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784 if (s->encoding) { |
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785 return s->encoding; |
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786 } |
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787 |
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788 for (s = s->imports; s; s = s->next) { |
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789 |
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790 encoding = ngx_http_xslt_encoding(s); |
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791 |
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792 if (encoding) { |
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793 return encoding; |
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794 } |
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795 } |
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796 |
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797 return NULL; |
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|
798 } |
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799 |
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800 |
2139 | 801 static void |
802 ngx_http_xslt_cleanup(void *data) | |
803 { | |
804 ngx_free(data); | |
805 } | |
806 | |
807 | |
808 static char * | |
809 ngx_http_xslt_entities(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
810 { | |
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811 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
2139 | 812 |
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813 ngx_str_t *value; |
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814 ngx_uint_t i; |
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815 ngx_pool_cleanup_t *cln; |
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816 ngx_http_xslt_file_t *file; |
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817 ngx_http_xslt_filter_main_conf_t *xmcf; |
2139 | 818 |
819 if (xlcf->dtd) { | |
820 return "is duplicate"; | |
821 } | |
822 | |
823 value = cf->args->elts; | |
824 | |
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825 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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826 |
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827 file = xmcf->dtd_files.elts; |
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828 for (i = 0; i < xmcf->dtd_files.nelts; i++) { |
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829 if (ngx_strcmp(file[i].name, value[1].data) == 0) { |
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830 xlcf->dtd = file[i].data; |
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831 return NGX_CONF_OK; |
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832 } |
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833 } |
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834 |
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835 cln = ngx_pool_cleanup_add(cf->pool, 0); |
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836 if (cln == NULL) { |
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837 return NGX_CONF_ERROR; |
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838 } |
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839 |
2139 | 840 xlcf->dtd = xmlParseDTD(NULL, (xmlChar *) value[1].data); |
841 | |
842 if (xlcf->dtd == NULL) { | |
843 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "xmlParseDTD() failed"); | |
844 return NGX_CONF_ERROR; | |
845 } | |
846 | |
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847 cln->handler = ngx_http_xslt_cleanup_dtd; |
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848 cln->data = xlcf->dtd; |
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849 |
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850 file = ngx_array_push(&xmcf->dtd_files); |
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851 if (file == NULL) { |
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852 return NGX_CONF_ERROR; |
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853 } |
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854 |
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855 file->name = value[1].data; |
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856 file->data = xlcf->dtd; |
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857 |
2139 | 858 return NGX_CONF_OK; |
859 } | |
860 | |
861 | |
862 | |
863 static char * | |
864 ngx_http_xslt_stylesheet(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
865 { | |
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866 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
2139 | 867 |
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868 ngx_str_t *value; |
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869 ngx_uint_t i, n; |
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870 ngx_pool_cleanup_t *cln; |
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871 ngx_http_xslt_file_t *file; |
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872 ngx_http_xslt_sheet_t *sheet; |
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|
873 ngx_http_xslt_param_t *param; |
2588
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874 ngx_http_compile_complex_value_t ccv; |
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875 ngx_http_xslt_filter_main_conf_t *xmcf; |
2139 | 876 |
877 value = cf->args->elts; | |
878 | |
879 if (xlcf->sheets.elts == NULL) { | |
880 if (ngx_array_init(&xlcf->sheets, cf->pool, 1, | |
881 sizeof(ngx_http_xslt_sheet_t)) | |
882 != NGX_OK) | |
883 { | |
884 return NGX_CONF_ERROR; | |
885 } | |
886 } | |
887 | |
888 sheet = ngx_array_push(&xlcf->sheets); | |
889 if (sheet == NULL) { | |
890 return NGX_CONF_ERROR; | |
891 } | |
892 | |
893 ngx_memzero(sheet, sizeof(ngx_http_xslt_sheet_t)); | |
894 | |
5330
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|
895 if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) { |
2139 | 896 return NGX_CONF_ERROR; |
897 } | |
898 | |
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899 xmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_xslt_filter_module); |
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900 |
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901 file = xmcf->sheet_files.elts; |
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902 for (i = 0; i < xmcf->sheet_files.nelts; i++) { |
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|
903 if (ngx_strcmp(file[i].name, value[1].data) == 0) { |
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|
904 sheet->stylesheet = file[i].data; |
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905 goto found; |
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|
906 } |
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907 } |
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908 |
2139 | 909 cln = ngx_pool_cleanup_add(cf->pool, 0); |
910 if (cln == NULL) { | |
911 return NGX_CONF_ERROR; | |
912 } | |
913 | |
914 sheet->stylesheet = xsltParseStylesheetFile(value[1].data); | |
915 if (sheet->stylesheet == NULL) { | |
916 ngx_conf_log_error(NGX_LOG_ERR, cf, 0, | |
917 "xsltParseStylesheetFile(\"%s\") failed", | |
918 value[1].data); | |
919 return NGX_CONF_ERROR; | |
920 } | |
921 | |
922 cln->handler = ngx_http_xslt_cleanup_stylesheet; | |
923 cln->data = sheet->stylesheet; | |
924 | |
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925 file = ngx_array_push(&xmcf->sheet_files); |
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926 if (file == NULL) { |
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927 return NGX_CONF_ERROR; |
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928 } |
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929 |
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930 file->name = value[1].data; |
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931 file->data = sheet->stylesheet; |
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932 |
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933 found: |
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934 |
2139 | 935 n = cf->args->nelts; |
936 | |
937 if (n == 2) { | |
938 return NGX_CONF_OK; | |
939 } | |
940 | |
941 if (ngx_array_init(&sheet->params, cf->pool, n - 2, | |
4554
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Added xslt_param and xslt_string_param directives.
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|
942 sizeof(ngx_http_xslt_param_t)) |
2139 | 943 != NGX_OK) |
944 { | |
945 return NGX_CONF_ERROR; | |
946 } | |
947 | |
948 for (i = 2; i < n; i++) { | |
949 | |
950 param = ngx_array_push(&sheet->params); | |
951 if (param == NULL) { | |
952 return NGX_CONF_ERROR; | |
953 } | |
954 | |
4554
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955 ngx_memzero(param, sizeof(ngx_http_xslt_param_t)); |
2588
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956 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
2139 | 957 |
2588
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958 ccv.cf = cf; |
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959 ccv.value = &value[i]; |
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960 ccv.complex_value = ¶m->value; |
2588
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961 ccv.zero = 1; |
2139 | 962 |
2588
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963 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
2139 | 964 return NGX_CONF_ERROR; |
965 } | |
966 } | |
967 | |
968 return NGX_CONF_OK; | |
969 } | |
970 | |
971 | |
4554
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972 static char * |
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|
973 ngx_http_xslt_param(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
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974 { |
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975 ngx_http_xslt_filter_loc_conf_t *xlcf = conf; |
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976 |
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977 ngx_http_xslt_param_t *param; |
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978 ngx_http_compile_complex_value_t ccv; |
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979 ngx_str_t *value; |
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980 |
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981 value = cf->args->elts; |
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982 |
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983 if (xlcf->params == NULL) { |
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984 xlcf->params = ngx_array_create(cf->pool, 2, |
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|
985 sizeof(ngx_http_xslt_param_t)); |
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|
986 if (xlcf->params == NULL) { |
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987 return NGX_CONF_ERROR; |
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988 } |
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989 } |
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|
990 |
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|
991 param = ngx_array_push(xlcf->params); |
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992 if (param == NULL) { |
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|
993 return NGX_CONF_ERROR; |
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|
994 } |
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|
995 |
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996 param->name = value[1].data; |
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|
997 param->quote = (cmd->post == NULL) ? 0 : 1; |
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|
998 |
212a0251951b
Added xslt_param and xslt_string_param directives.
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|
999 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
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|
1000 |
212a0251951b
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|
1001 ccv.cf = cf; |
212a0251951b
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|
1002 ccv.value = &value[2]; |
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|
1003 ccv.complex_value = ¶m->value; |
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|
1004 ccv.zero = 1; |
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|
1005 |
212a0251951b
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|
1006 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
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|
1007 return NGX_CONF_ERROR; |
212a0251951b
Added xslt_param and xslt_string_param directives.
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|
1008 } |
212a0251951b
Added xslt_param and xslt_string_param directives.
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|
1009 |
212a0251951b
Added xslt_param and xslt_string_param directives.
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|
1010 return NGX_CONF_OK; |
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|
1011 } |
212a0251951b
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|
1012 |
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|
1013 |
2139 | 1014 static void |
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1015 ngx_http_xslt_cleanup_dtd(void *data) |
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1016 { |
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|
1017 xmlFreeDtd(data); |
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1018 } |
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1019 |
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|
1020 |
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|
1021 static void |
2139 | 1022 ngx_http_xslt_cleanup_stylesheet(void *data) |
1023 { | |
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|
1024 xsltFreeStylesheet(data); |
2139 | 1025 } |
1026 | |
1027 | |
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1028 static void * |
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|
1029 ngx_http_xslt_filter_create_main_conf(ngx_conf_t *cf) |
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1030 { |
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1031 ngx_http_xslt_filter_main_conf_t *conf; |
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1032 |
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1033 conf = ngx_palloc(cf->pool, sizeof(ngx_http_xslt_filter_main_conf_t)); |
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1034 if (conf == NULL) { |
2912
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|
1035 return NULL; |
2154
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|
1036 } |
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|
1037 |
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1038 if (ngx_array_init(&conf->dtd_files, cf->pool, 1, |
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1039 sizeof(ngx_http_xslt_file_t)) |
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1040 != NGX_OK) |
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1041 { |
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1042 return NULL; |
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1043 } |
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|
1044 |
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|
1045 if (ngx_array_init(&conf->sheet_files, cf->pool, 1, |
2156
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|
1046 sizeof(ngx_http_xslt_file_t)) |
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1047 != NGX_OK) |
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|
1048 { |
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|
1049 return NULL; |
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|
1050 } |
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|
1051 |
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|
1052 return conf; |
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|
1053 } |
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|
1054 |
2139 | 1055 |
1056 static void * | |
1057 ngx_http_xslt_filter_create_conf(ngx_conf_t *cf) | |
1058 { | |
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1059 ngx_http_xslt_filter_loc_conf_t *conf; |
2139 | 1060 |
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|
1061 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_xslt_filter_loc_conf_t)); |
2139 | 1062 if (conf == NULL) { |
2912
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|
1063 return NULL; |
2139 | 1064 } |
1065 | |
1066 /* | |
1067 * set by ngx_pcalloc(): | |
1068 * | |
2148 | 1069 * conf->dtd = NULL; |
1070 * conf->sheets = { NULL }; | |
1071 * conf->types = { NULL }; | |
1072 * conf->types_keys = NULL; | |
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1073 * conf->params = NULL; |
2139 | 1074 */ |
1075 | |
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1076 conf->last_modified = NGX_CONF_UNSET; |
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1077 |
2139 | 1078 return conf; |
1079 } | |
1080 | |
1081 | |
1082 static char * | |
1083 ngx_http_xslt_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
1084 { | |
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1085 ngx_http_xslt_filter_loc_conf_t *prev = parent; |
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1086 ngx_http_xslt_filter_loc_conf_t *conf = child; |
2139 | 1087 |
1088 if (conf->dtd == NULL) { | |
1089 conf->dtd = prev->dtd; | |
1090 } | |
1091 | |
1092 if (conf->sheets.nelts == 0) { | |
1093 conf->sheets = prev->sheets; | |
1094 } | |
1095 | |
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1096 if (conf->params == NULL) { |
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1097 conf->params = prev->params; |
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1098 } |
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1099 |
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1100 if (ngx_http_merge_types(cf, &conf->types_keys, &conf->types, |
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1101 &prev->types_keys, &prev->types, |
2148 | 1102 ngx_http_xslt_default_types) |
2139 | 1103 != NGX_OK) |
1104 { | |
1105 return NGX_CONF_ERROR; | |
1106 } | |
1107 | |
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1108 ngx_conf_merge_value(conf->last_modified, prev->last_modified, 0); |
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1109 |
2139 | 1110 return NGX_CONF_OK; |
1111 } | |
1112 | |
1113 | |
1114 static ngx_int_t | |
5280
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1115 ngx_http_xslt_filter_preconfiguration(ngx_conf_t *cf) |
2139 | 1116 { |
1117 xmlInitParser(); | |
1118 | |
2299 | 1119 #if (NGX_HAVE_EXSLT) |
1120 exsltRegisterAll(); | |
1121 #endif | |
1122 | |
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1123 return NGX_OK; |
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1124 } |
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1125 |
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1126 |
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1127 static ngx_int_t |
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1128 ngx_http_xslt_filter_init(ngx_conf_t *cf) |
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1129 { |
2139 | 1130 ngx_http_next_header_filter = ngx_http_top_header_filter; |
1131 ngx_http_top_header_filter = ngx_http_xslt_header_filter; | |
1132 | |
1133 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
1134 ngx_http_top_body_filter = ngx_http_xslt_body_filter; | |
1135 | |
1136 return NGX_OK; | |
1137 } | |
1138 | |
1139 | |
1140 static void | |
1141 ngx_http_xslt_filter_exit(ngx_cycle_t *cycle) | |
1142 { | |
1143 xsltCleanupGlobals(); | |
1144 xmlCleanupParser(); | |
1145 } |