1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2018 Olaf Wintermann. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef WEBDAV_H
30 #define WEBDAV_H
31
32 #include <inttypes.h>
33 #include <stdbool.h>
34 #include <cx/map.h>
35 #include <cx/mempool.h>
36 #include <cx/linked_list.h>
37 #include <cx/string.h>
38 #include <cx/buffer.h>
39 #include <curl/curl.h>
40 #include <libxml/tree.h>
41
42 #ifndef _WIN32
43 #include <pthread.h>
44 #else
45 #include <Windows.h>
46 #endif
47
48 #ifdef __cplusplus
49 extern "C" {
50 #endif
51
52 typedef char DavBool;
53 #ifndef TRUE
54 #define TRUE 1
55 #endif
56 #ifndef FALSE
57 #define FALSE 0
58 #endif
59
60 typedef struct DavContext DavContext;
61 typedef struct DavProxy DavProxy;
62 typedef struct DavSession DavSession;
63 typedef struct DavResource DavResource;
64 typedef struct DavResult DavResult;
65 typedef struct DavNamespace DavNamespace;
66 typedef struct DavProperty DavProperty;
67 typedef struct DavPropName DavPropName;
68 typedef struct DavKey DavKey;
69 typedef struct DavNSInfo DavNSInfo;
70 typedef struct DavXmlNode DavXmlNode;
71 typedef struct DavXmlAttr DavXmlAttr;
72
73 typedef struct DavInputStream DavInputStream;
74 typedef struct DavOutputStream DavOutputStream;
75
76 #ifndef _WIN32
77 #define DAV_MUTEX pthread_mutex_t
78 #else
79 #define DAV_MUTEX HANDLE
80 #endif
81
82 typedef size_t(*dav_read_func)(void*, size_t, size_t, void*);
83 typedef size_t(*dav_write_func)(const void*, size_t, size_t, void*);
84 typedef int(*dav_seek_func)(const void *, long, int);
85
86 typedef int(*dav_auth_func)(DavSession *, void *);
87 typedef void(*dav_progress_func)(DavResource *, int64_t, int64_t, void *);
88
89
90 typedef void(*dav_rqlog_func)(
91 DavSession *sn,
92 const char *method,
93 const char *url,
94 const char *request_body,
95 size_t request_bodylen,
96 int status,
97 const char *response_body,
98 size_t response_bodylen);
99
100 enum DavError {
101 DAV_OK = 0,
102 DAV_ERROR,
103 DAV_NOT_FOUND,
104 DAV_UNAUTHORIZED,
105 DAV_FORBIDDEN,
106 DAV_METHOD_NOT_ALLOWED,
107 DAV_CONFLICT,
108 DAV_LOCKED,
109 DAV_UNSUPPORTED_PROTOCOL,
110 DAV_COULDNT_RESOLVE_PROXY,
111 DAV_COULDNT_RESOLVE_HOST,
112 DAV_COULDNT_CONNECT,
113 DAV_TIMEOUT,
114 DAV_SSL_ERROR,
115 DAV_QL_ERROR,
116 DAV_CONTENT_VERIFICATION_ERROR,
117 DAV_PRECONDITION_FAILED,
118 DAV_REQUEST_ENTITY_TOO_LARGE,
119 DAV_REQUEST_URL_TOO_LONG,
120 DAV_PROXY_AUTH_REQUIRED,
121 DAV_NET_AUTH_REQUIRED
122 };
123
124 typedef enum DavError DavError;
125
126 enum DavXmlNodeType {
127 DAV_XML_NONE = 0,
128 DAV_XML_ELEMENT,
129 DAV_XML_TEXT
130 };
131
132 typedef enum DavXmlNodeType DavXmlNodeType;
133
134 #define DAV_SESSION_ENCRYPT_CONTENT 0x0001
135 #define DAV_SESSION_ENCRYPT_NAME 0x0002
136 #define DAV_SESSION_ENCRYPT_PROPERTIES 0x0004
137 #define DAV_SESSION_DECRYPT_CONTENT 0x0008
138 #define DAV_SESSION_DECRYPT_NAME 0x0010
139 #define DAV_SESSION_DECRYPT_PROPERTIES 0x0020
140 #define DAV_SESSION_STORE_HASH 0x0040
141
142 #define DAV_SESSION_CONTENT_ENCRYPTION 0x0009
143 #define DAV_SESSION_FULL_ENCRYPTION 0x003f
144
145
146 #define DAV_NS "http://davutils.org/"
147 #define DAV_PROPS_NS "http://davutils.org/props/"
148
149 struct DavNamespace {
150 char *prefix;
151 char *name;
152 };
153
154 struct DavResource {
155 DavSession *session;
156 DavResource *prev;
157 DavResource *next;
158 DavResource *parent;
159 DavResource *children;
160 char *name;
161 char *path;
162 char *href;
163 uint64_t contentlength;
164 char *contenttype;
165 time_t creationdate;
166 time_t lastmodified;
167 void *data;
168 int iscollection;
169 int exists;
170 };
171
172 struct DavSession {
173 DavContext *context;
174 CURL *handle;
175 char *base_url;
176 CxMempool *mp;
177 CxMap *pathcache;
178 DavKey *key;
179 void *locks;
180 uint32_t flags;
181 DavError error;
182 char *errorstr;
183
184 int(*auth_prompt)(DavSession *sn, void *userdata);
185 void *authprompt_userdata;
186
187 dav_rqlog_func logfunc;
188
189 void(*get_progress)(DavResource *res, int64_t total, int64_t now, void *userdata);
190 void(*put_progress)(DavResource *res, int64_t total, int64_t now, void *userdata);
191 void *progress_userdata;
192 };
193
194 struct DavContext {
195 CxMap *namespaces;
196 CxMap *namespaceinfo;
197 CxMap *keys;
198 CxList *sessions;
199 DavProxy *http_proxy;
200 DavProxy *https_proxy;
201 DAV_MUTEX mutex;
202 DavBool mtsafe;
203 };
204
205 struct DavProxy {
206 char *url;
207 char *username;
208 char *password;
209 char *no_proxy;
210 };
211
212 struct DavProperty {
213 DavNamespace *ns;
214 char *name;
215 DavXmlNode *value;
216 };
217
218 struct DavPropName {
219 char *ns;
220 char *name;
221 };
222
223 struct DavResult {
224 DavResource *result;
225 int status;
226 };
227
228 #define DAV_KEY_AES128 0
229 #define DAV_KEY_AES256 1
230
231 struct DavKey {
232 char *name;
233 int type;
234 void *data;
235 size_t length;
236 };
237
238 struct DavNSInfo {
239 char *prefix;
240 DavBool encrypt;
241 };
242
243 struct DavXmlNode {
244 DavXmlNodeType type;
245
246 char *namespace;
247 char *name;
248
249 DavXmlNode *prev;
250 DavXmlNode *next;
251 DavXmlNode *children;
252 DavXmlNode *parent;
253
254 DavXmlAttr *attributes;
255
256 char *content;
257 size_t contentlength;
258 };
259
260 struct DavXmlAttr {
261 char *name;
262 char *value;
263 DavXmlAttr *next;
264 };
265
266 DavContext* dav_context_new(void);
267 void dav_context_destroy(DavContext *ctx);
268 void dav_context_set_mtsafe(DavContext *ctx, DavBool enable);
269
270 void dav_context_lock(DavContext *ctx);
271 void dav_context_unlock(DavContext *ctx);
272
273 void dav_context_add_key(DavContext *context, DavKey *key);
274 DavKey* dav_context_get_key(DavContext *context, const char *name);
275
276 int dav_add_namespace(DavContext *context, const char *prefix, const char *ns);
277 DavNamespace* dav_get_namespace(DavContext *context, const char *prefix);
278 DavNamespace* dav_get_namespace_s(DavContext *context, cxstring prefix);
279
280 int dav_enable_namespace_encryption(DavContext *context, const char *ns, DavBool encrypt);
281 int dav_namespace_is_encrypted(DavContext *context, const char *ns);
282
283 int dav_context_add_session(DavContext *context, DavSession *sn);
284 int dav_context_remove_session(DavContext *context, DavSession *sn);
285
286 DavSession* dav_session_new(DavContext *context, char *base_url);
287 DavSession* dav_session_new_auth(
288 DavContext *context,
289 char *base_url,
290 char *user,
291 char *password);
292 DavSession* dav_session_clone(DavSession *sn);
293 void dav_session_set_auth(DavSession *sn, const char *user, const char *password);
294 void dav_session_set_auth_s(DavSession *sn, cxstring user, cxstring password);
295 void dav_session_set_baseurl(DavSession *sn, char *base_url);
296 void dav_session_enable_encryption(DavSession *sn, DavKey *key, int flags);
297
298 void dav_session_set_authcallback(DavSession *sn, dav_auth_func func, void *userdata);
299 void dav_session_set_progresscallback(DavSession *sn, dav_progress_func get, dav_progress_func put, void *userdata);
300
301 void dav_session_destroy(DavSession *sn);
302
303 void dav_session_destructor(DavSession *sn);
304
305 void* dav_session_malloc(DavSession *sn, size_t size);
306 void* dav_session_calloc(DavSession *sn, size_t nelm, size_t size);
307 void* dav_session_realloc(DavSession *sn, void *ptr, size_t size);
308 void dav_session_free(DavSession *sn, void *ptr);
309 char* dav_session_strdup(DavSession *sn, const char *str);
310
311 void dav_set_effective_href(DavSession *sn, DavResource *resource);
312 DavResource* dav_get(DavSession *sn, char *path, const char *properties);
313
314 CxList* parse_properties_string(DavContext *context, cxstring str);
315
316 DavResource* dav_query(DavSession *sn, char *query, ...);
317
318 cxmutstr dav_property_key(const char *ns, const char *name);
319 void dav_get_property_namespace_str(
320 DavContext *ctx,
321 char *prefixed_name,
322 char **ns,
323 char **name);
324 DavNamespace* dav_get_property_namespace(
325 DavContext *ctx,
326 char *prefixed_name,
327 char **name);
328
329 /* ------------------------ resource functions ------------------------ */
330
331 DavResource* dav_resource_new(DavSession *sn, const char *path);
332 DavResource* dav_resource_new_child(DavSession *sn, DavResource *parent, const char *name);
333 DavResource* dav_resource_new_href(DavSession *sn, const char *href);
334
335 void dav_resource_free(DavResource *res);
336 void dav_resource_free_all(DavResource *res);
337
338 char* dav_resource_get_href(DavResource *resource);
339
340 DavResource* dav_create_child(DavResource *parent, char *name);
341 int dav_delete(DavResource *res);
342 int dav_create(DavResource *res);
343 int dav_exists(DavResource *res);
344
345 int dav_copy(DavResource *res, char *newpath);
346 int dav_move(DavResource *res, char *newpath);
347 int dav_copy_o(DavResource *res, char *newpath, DavBool override);
348 int dav_move_o(DavResource *res, char *newpath, DavBool override);
349 int dav_copyto(DavResource *res, char *url, DavBool override);
350 int dav_moveto(DavResource *res, char *url, DavBool override);
351
352 int dav_lock(DavResource *res);
353 int dav_lock_t(DavResource *res, time_t timeout);
354 int dav_unlock(DavResource *res);
355
356 DavXmlNode* dav_get_property(DavResource *res, char *name);
357 DavXmlNode* dav_get_property_ns(DavResource *res, const char *ns, const char *name);
358 DavXmlNode* dav_get_encrypted_property_ns(DavResource *res, const char *ns, const char *name);
359 char* dav_get_string_property(DavResource *res, char *name);
360 char* dav_get_string_property_ns(DavResource *res, char *ns, char *name);
361 int dav_set_string_property(DavResource *res, char *name, char *value);
362 void dav_set_string_property_ns(DavResource *res, char *ns, char *name, char *value);
363 void dav_set_property(DavResource *res, char *name, DavXmlNode *value);
364 void dav_set_property_ns(DavResource *res, char *ns, char *name, DavXmlNode *value);
365 void dav_remove_property(DavResource *res, char *name);
366 void dav_remove_property_ns(DavResource *res, char *ns, char *name);
367 void dav_set_encrypted_property_ns(DavResource *res, char *ns, char *name, DavXmlNode *value);
368 void dav_set_encrypted_string_property_ns(DavResource *res, char *ns, char *name, char *value);
369 void dav_remove_encrypted_property_ns(DavResource *res, char *ns, char *name);
370
371 DavPropName* dav_get_property_names(DavResource *res, size_t *count);
372
373 void dav_set_content(DavResource *res, void *stream, dav_read_func read_func, dav_seek_func seek_func);
374 void dav_set_content_data(DavResource *res, char *content, size_t length);
375 void dav_set_content_length(DavResource *res, size_t length);
376
377 int dav_load(DavResource *res);
378 int dav_load_prop(DavResource *res, DavPropName *properties, size_t numprop);
379 int dav_store(DavResource *res);
380 int dav_get_content(DavResource *res, void *stream, dav_write_func write_func);
381
382 DavInputStream* dav_inputstream_open(DavResource *res);
383 size_t dav_read(void *buf, size_t size, size_t nitems, DavInputStream *in);
384 void dav_inputstream_close(DavInputStream *in);
385
386 DavOutputStream* dav_outputstream_open(DavResource *res);
387 size_t dav_write(const void *buf, size_t size, size_t nitems, DavOutputStream *out);
388 int dav_outputstream_close(DavOutputStream *out);
389
390 void dav_verbose_log(
391 DavSession *sn,
392 const char *method,
393 const char *url,
394 const char *request_body,
395 size_t request_bodylen,
396 int status,
397 const char *response_body,
398 size_t response_bodylen);
399
400 // private
401 int dav_propfind(DavSession *sn, DavResource *root, CxBuffer *rqbuf);
402
403
404 /* --------------------------- DeltaV ---------------------------- */
405
406 int dav_versioncontrol(DavResource *res);
407 int dav_checkout(DavResource *res);
408 int dav_checkin(DavResource *res);
409 int dav_uncheckout(DavResource *res);
410 DavResource* dav_versiontree(DavResource *res, char *properties);
411
412 /* ------------------------ xml functions ------------------------ */
413 char* dav_xml_getstring(DavXmlNode *node);
414 DavBool dav_xml_isstring(DavXmlNode *node);
415 DavXmlNode* dav_xml_nextelm(DavXmlNode *node);
416 DavXmlNode* dav_text_node(DavSession *sn, const char *text);
417 DavXmlNode* dav_text_element(DavSession *sn, const char *ns, const char *name, const char *text);
418
419 DavXmlNode* dav_copy_node(DavXmlNode *node);
420
421 void dav_free_xml_node_sn(DavSession *sn, DavXmlNode *node);
422 void dav_free_xml_node(DavXmlNode *node);
423
424 DavXmlNode* dav_xml_createnode(const char *ns, const char *name);
425 DavXmlNode* dav_xml_createnode_with_text(const char *ns, const char *name, const char *text);
426 DavXmlNode* dav_xml_createtextnode(const char *text);
427 void dav_xml_add_child(DavXmlNode *node, DavXmlNode *child);
428 void dav_xml_add_attr(DavXmlNode *node, const char *name, const char *value);
429 char* dav_xml_get_attr(DavXmlNode *node, const char *name);
430
431 DavXmlNode* dav_parse_xml(DavSession *sn, const char *str, size_t len);
432
433 #ifdef __cplusplus
434 }
435 #endif
436
437 #endif /* WEBDAV_H */
438
439