Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_xslt_filter_module.c @ 6077:0395f788b080 stable-1.6
Resolver: fixed use-after-free memory access.
In 954867a2f0a6, we switched to using resolver node as the
timer event data, so make sure we do not free resolver node
memory until the corresponding timer is deleted.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 20 Nov 2014 15:24:40 +0300 |
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 |
2159
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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 |
2153
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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
dd1570b6f237
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3508
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 |
2882
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619 r->headers_out.content_type_lowcase = NULL; |
896db5a09bd2
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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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Added xslt_param and xslt_string_param directives.
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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 | |
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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); |
212a0251951b
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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 |
212a0251951b
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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 |
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679 continue; |
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680 } |
212a0251951b
Added xslt_param and xslt_string_param directives.
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|
681 |
212a0251951b
Added xslt_param and xslt_string_param directives.
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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
Fixed off-by-one in xslt parameter parsing.
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4412
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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
314c3d7cc3a5
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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) { |
2156
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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]; |
4554
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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 } |
212a0251951b
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|
995 |
212a0251951b
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|
996 param->name = value[1].data; |
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|
997 param->quote = (cmd->post == NULL) ? 0 : 1; |
212a0251951b
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changeset
|
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)); |
212a0251951b
Added xslt_param and xslt_string_param directives.
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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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changeset
|
1003 ccv.complex_value = ¶m->value; |
212a0251951b
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|
1004 ccv.zero = 1; |
212a0251951b
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changeset
|
1005 |
212a0251951b
Added xslt_param and xslt_string_param directives.
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|
1006 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
212a0251951b
Added xslt_param and xslt_string_param directives.
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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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changeset
|
1010 return NGX_CONF_OK; |
212a0251951b
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|
1011 } |
212a0251951b
Added xslt_param and xslt_string_param directives.
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|
1012 |
212a0251951b
Added xslt_param and xslt_string_param directives.
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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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changeset
|
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; | |
4554
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1073 * conf->params = NULL; |
2139 | 1074 */ |
1075 | |
5230
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Xslt: xslt_last_modified directive.
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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 { | |
2154
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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 | |
4554
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Added xslt_param and xslt_string_param directives.
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1096 if (conf->params == NULL) { |
212a0251951b
Added xslt_param and xslt_string_param directives.
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1097 conf->params = prev->params; |
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Added xslt_param and xslt_string_param directives.
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1098 } |
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Added xslt_param and xslt_string_param directives.
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1099 |
3372
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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 | |
5230
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Xslt: xslt_last_modified directive.
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1108 ngx_conf_merge_value(conf->last_modified, prev->last_modified, 0); |
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Xslt: xslt_last_modified directive.
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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 | |
5280
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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 } |