Parent Directory | Revision Log
Fixed proxy settings
1 | /* |
2 | * This file is part of GPXView. |
3 | * |
4 | * GPXView is free software: you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by |
6 | * the Free Software Foundation, either version 3 of the License, or |
7 | * (at your option) any later version. |
8 | * |
9 | * GPXView is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with GPXView. If not, see <http://www.gnu.org/licenses/>. |
16 | */ |
17 | |
18 | #include <curl/curl.h> |
19 | #include <curl/types.h> |
20 | #include <curl/easy.h> |
21 | |
22 | #include <libxml/parser.h> |
23 | #include <libxml/tree.h> |
24 | |
25 | #include <glib/gstdio.h> |
26 | |
27 | #include <fcntl.h> |
28 | |
29 | #ifndef LIBXML_TREE_ENABLED |
30 | #error "Tree not enabled in libxml" |
31 | #endif |
32 | |
33 | #include "gpxview.h" |
34 | |
35 | #define ID_PATTERN "guid=" |
36 | |
37 | static size_t mem_write(void *ptr, size_t size, size_t nmemb, |
38 | void *stream) { |
39 | curl_mem_t *p = (curl_mem_t*)stream; |
40 | |
41 | p->ptr = g_realloc(p->ptr, p->len + size*nmemb + 1); |
42 | if(p->ptr) { |
43 | memcpy(p->ptr+p->len, ptr, size*nmemb); |
44 | p->len += size*nmemb; |
45 | p->ptr[p->len] = 0; |
46 | } |
47 | return nmemb; |
48 | } |
49 | |
50 | /* return list of all votes in this file */ |
51 | static gcvote_t *votes_parse(xmlDocPtr doc, xmlNode *a_node) { |
52 | xmlNode *cur_node = NULL; |
53 | |
54 | gcvote_t *votes = NULL, **cur = &votes; |
55 | |
56 | for (cur_node = a_node->children; cur_node; cur_node = cur_node->next) { |
57 | if (cur_node->type == XML_ELEMENT_NODE) { |
58 | |
59 | if(strcasecmp((char*)cur_node->name, "vote") == 0) { |
60 | *cur = g_new0(gcvote_t, 1); |
61 | (*cur)->quality = GCVOTE_NONE; |
62 | |
63 | /* unhandled attributes: */ |
64 | /* userName, voteAvg, voteUser, waypoint, vote1-5 */ |
65 | |
66 | /* parse votes attributes */ |
67 | char *prop_str = (char*)xmlGetProp(cur_node, BAD_CAST "voteMedian"); |
68 | if(prop_str) { |
69 | (*cur)->quality = atoi(prop_str); |
70 | xmlFree(prop_str); |
71 | } |
72 | |
73 | prop_str = (char*)xmlGetProp(cur_node, BAD_CAST "voteCnt"); |
74 | if(prop_str) { |
75 | (*cur)->votes = atoi(prop_str); |
76 | xmlFree(prop_str); |
77 | } |
78 | |
79 | prop_str = (char*)xmlGetProp(cur_node, BAD_CAST "cacheId"); |
80 | if(prop_str) { |
81 | (*cur)->id = g_strdup(prop_str); |
82 | xmlFree(prop_str); |
83 | } |
84 | |
85 | cur = &(*cur)->next; |
86 | } else if(strcasecmp((char*)cur_node->name, "errorstring") == 0) { |
87 | /* ignore for now ... */ |
88 | } else |
89 | printf("found unhandled votes/%s\n", cur_node->name); |
90 | } |
91 | } |
92 | return votes; |
93 | } |
94 | |
95 | /* parse root element */ |
96 | static gcvote_t *parse_root(xmlDocPtr doc, xmlNode *a_node) { |
97 | xmlNode *cur_node = NULL; |
98 | gcvote_t *votes = NULL; |
99 | |
100 | for (cur_node = a_node; cur_node; cur_node = cur_node->next) { |
101 | if (cur_node->type == XML_ELEMENT_NODE) { |
102 | |
103 | if(strcasecmp((char*)cur_node->name, "votes") == 0) { |
104 | if(!votes) |
105 | votes = votes_parse(doc, cur_node); |
106 | else |
107 | printf("gcvote: ignoring multiple votes lists\n"); |
108 | } else |
109 | printf("found unhandled %s\n", cur_node->name); |
110 | } |
111 | } |
112 | return votes; |
113 | } |
114 | |
115 | static gcvote_t *parse_doc(xmlDocPtr doc) { |
116 | /* Get the root element node */ |
117 | xmlNode *root_element = xmlDocGetRootElement(doc); |
118 | gcvote_t *votes = parse_root(doc, root_element); |
119 | |
120 | /*free the document */ |
121 | xmlFreeDoc(doc); |
122 | |
123 | /* |
124 | * Free the global variables that may |
125 | * have been allocated by the parser. |
126 | */ |
127 | xmlCleanupParser(); |
128 | |
129 | return votes; |
130 | } |
131 | |
132 | static void curl_set_proxy(CURL *curl, proxy_t *proxy) { |
133 | if(proxy) { |
134 | if(proxy->ignore_hosts) |
135 | printf("WARNING: Proxy \"ignore_hosts\" unsupported!\n"); |
136 | |
137 | printf("gcvote: using proxy %s:%d\n", proxy->host, proxy->port); |
138 | |
139 | curl_easy_setopt(curl, CURLOPT_PROXY, proxy->host); |
140 | curl_easy_setopt(curl, CURLOPT_PROXYPORT, proxy->port); |
141 | |
142 | if(proxy->use_authentication) { |
143 | printf("gcvote: use auth for user %s\n", proxy->authentication_user); |
144 | |
145 | char *cred = g_strdup_printf("%s:%s", |
146 | proxy->authentication_user, |
147 | proxy->authentication_password); |
148 | |
149 | curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, cred); |
150 | g_free(cred); |
151 | } |
152 | } else |
153 | printf("gcvote: no proxy configured\n"); |
154 | } |
155 | |
156 | void gcvote_request_free(gcvote_request_t *request) { |
157 | /* decrease refcount and only free structure if no references are left */ |
158 | request->refcount--; |
159 | if(request->refcount) { |
160 | printf("gcvote: still %d references, keeping request\n", |
161 | request->refcount); |
162 | return; |
163 | } |
164 | |
165 | printf("gcvote: no references left, freeing request\n"); |
166 | if(request->url) g_free(request->url); |
167 | |
168 | if(request->mem.ptr) |
169 | g_free(request->mem.ptr); |
170 | |
171 | g_free(request); |
172 | } |
173 | |
174 | /* gcvote net result handler */ |
175 | static gboolean gcvote_result_handler(gpointer data) { |
176 | gcvote_request_t *request = (gcvote_request_t*)data; |
177 | |
178 | printf("gcvote: result handler\n"); |
179 | |
180 | /* worker thread has already reduced its refcounter */ |
181 | if(request->refcount < 1) { |
182 | printf("gcvote: main app isn't listening anymore\n"); |
183 | return FALSE; |
184 | } |
185 | |
186 | if(request->res) { |
187 | printf("gcvote: curl failed\n"); |
188 | request->cb(NULL, request->userdata); |
189 | return FALSE; |
190 | } |
191 | |
192 | /* parse the reply */ |
193 | /* nothing could be parsed, just give up */ |
194 | if(!request->mem.ptr || !request->mem.len) { |
195 | printf("gcvote: ignoring zero length reply\n"); |
196 | request->cb(NULL, request->userdata); |
197 | return FALSE; |
198 | } |
199 | |
200 | /* start XML parser */ |
201 | LIBXML_TEST_VERSION; |
202 | |
203 | /* parse the file and get the DOM */ |
204 | xmlDoc *doc = xmlReadMemory(request->mem.ptr, request->mem.len, |
205 | NULL, NULL, 0); |
206 | |
207 | /* nothing could be parsed, just give up */ |
208 | if(!doc) { |
209 | request->cb(NULL, request->userdata); |
210 | return FALSE; |
211 | } |
212 | |
213 | vote_t *vote = NULL; |
214 | gcvote_t *votes = parse_doc(doc); |
215 | |
216 | /* search for requested cache in reply and free chain */ |
217 | while(votes) { |
218 | gcvote_t *next = votes->next; |
219 | |
220 | if(!vote && !strcmp(votes->id, request->id) && (votes->quality > 0)) { |
221 | |
222 | vote = g_new0(vote_t, 1); |
223 | vote->quality = votes->quality; |
224 | vote->votes = votes->votes; |
225 | } |
226 | |
227 | if(votes->id) g_free(votes->id); |
228 | g_free(votes); |
229 | votes = next; |
230 | } |
231 | |
232 | if(vote) { |
233 | printf("gcvote: worker found vote %d/%d\n", vote->quality, vote->votes); |
234 | request->cb(vote, request->userdata); |
235 | } else |
236 | printf("gcvote: no vote found\n"); |
237 | |
238 | return FALSE; |
239 | } |
240 | |
241 | static void gcvotes_free(gcvote_t *votes) { |
242 | while(votes) { |
243 | gcvote_t *next = votes->next; |
244 | if(votes->id) g_free(votes->id); |
245 | g_free(votes); |
246 | votes = next; |
247 | } |
248 | } |
249 | |
250 | void gcvote_save(appdata_t *appdata, cache_t *cache, curl_mem_t *mem) { |
251 | if(!mem->len || !mem->ptr) return; |
252 | |
253 | /* save data to disk */ |
254 | char *filename = g_strdup_printf("%s%s/gcvote.xml", |
255 | appdata->image_path, |
256 | cache->id); |
257 | if(checkdir(filename) != 0) |
258 | printf("gcvote: unable to create file path\n"); |
259 | else { |
260 | printf("gcvote: write %d bytes to %s\n", mem->len, filename); |
261 | |
262 | int handle = g_open(filename, O_WRONLY | O_CREAT, 0644); |
263 | if(handle >= 0) { |
264 | int len = write(handle, mem->ptr, mem->len); |
265 | close(handle); |
266 | |
267 | /* if write failed, then remove the file */ |
268 | if(len != mem->len) |
269 | g_remove(filename); |
270 | } |
271 | } |
272 | |
273 | free(filename); |
274 | } |
275 | |
276 | static void *worker_thread(void *ptr) { |
277 | gcvote_request_t *request = (gcvote_request_t*)ptr; |
278 | struct curl_httppost *formpost=NULL; |
279 | struct curl_httppost *lastptr=NULL; |
280 | |
281 | printf("gcvote: worker thread running\n"); |
282 | |
283 | request->mem.ptr = NULL; |
284 | request->mem.len = 0; |
285 | |
286 | printf("gcvote: request to get votes for id %s\n", request->id); |
287 | |
288 | curl_formadd(&formpost, &lastptr, |
289 | CURLFORM_COPYNAME, "version", |
290 | CURLFORM_COPYCONTENTS, APP VERSION, |
291 | CURLFORM_END); |
292 | |
293 | curl_formadd(&formpost, &lastptr, |
294 | CURLFORM_COPYNAME, "cacheIds", |
295 | CURLFORM_COPYCONTENTS, request->id, |
296 | CURLFORM_END); |
297 | |
298 | /* try to init curl */ |
299 | CURL *curl = curl_easy_init(); |
300 | if(!curl) { |
301 | curl_formfree(formpost); |
302 | gcvote_request_free(request); |
303 | |
304 | /* callback anyway, so main loop can also clean up */ |
305 | g_idle_add(gcvote_result_handler, request); |
306 | |
307 | return NULL; |
308 | } |
309 | |
310 | curl_set_proxy(curl, request->proxy); |
311 | |
312 | /* play nice and report some user agent */ |
313 | curl_easy_setopt(curl, CURLOPT_USERAGENT, APP " " VERSION); |
314 | |
315 | /* download to memory */ |
316 | curl_easy_setopt(curl, CURLOPT_WRITEDATA, &request->mem); |
317 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, mem_write); |
318 | |
319 | /* what URL that receives this POST */ |
320 | curl_easy_setopt(curl, CURLOPT_URL, |
321 | "http://dosensuche.de/GCVote/getVotes.php"); |
322 | curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost); |
323 | |
324 | request->res = curl_easy_perform(curl); |
325 | printf("gcvote: curl perform returned with %d\n", request->res); |
326 | |
327 | // printf("received %d bytes\n", mem.len); |
328 | // printf("data: %s\n", mem.ptr); |
329 | |
330 | /* always cleanup */ |
331 | curl_easy_cleanup(curl); |
332 | |
333 | curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &request->response); |
334 | |
335 | /* then cleanup the formpost chain */ |
336 | curl_formfree(formpost); |
337 | |
338 | printf("gcvote: worker thread done\n"); |
339 | gcvote_request_free(request); |
340 | |
341 | /* cause gtk main loop to handle result */ |
342 | g_idle_add(gcvote_result_handler, request); |
343 | |
344 | printf("gcvote: thread terminating\n"); |
345 | |
346 | return NULL; |
347 | } |
348 | |
349 | gcvote_request_t *gcvote_request(appdata_t *appdata, gcvote_cb cb, |
350 | char *url, gpointer data) { |
351 | if(!url) return NULL; |
352 | |
353 | /* ------ prepare request for worker thread --------- */ |
354 | gcvote_request_t *request = g_new0(gcvote_request_t, 1); |
355 | request->url = g_strdup(url); |
356 | request->id = strstr(request->url, ID_PATTERN); |
357 | if(!request->id) { |
358 | printf("gcvote: unable to find id\n"); |
359 | gcvote_request_free(request); |
360 | return NULL; |
361 | } |
362 | |
363 | request->proxy = appdata->proxy; |
364 | request->id += strlen(ID_PATTERN); |
365 | request->refcount = 2; // master and worker hold a reference |
366 | request->cb = cb; |
367 | request->userdata = data; |
368 | |
369 | if(!g_thread_create(&worker_thread, request, FALSE, NULL) != 0) { |
370 | g_warning("gcvote: failed to create the worker thread"); |
371 | |
372 | /* free request and return error */ |
373 | request->refcount--; /* decrease by one for dead worker thread */ |
374 | gcvote_request_free(request); |
375 | return NULL; |
376 | } |
377 | |
378 | return request; |
379 | } |
380 | |
381 | vote_t *gcvote_restore(appdata_t *appdata, cache_t *cache) { |
382 | /* load data from disk */ |
383 | char *filename = g_strdup_printf("%s%s/gcvote.xml", |
384 | appdata->image_path, |
385 | cache->id); |
386 | |
387 | printf("gcvote: trying to restore from %s\n", filename); |
388 | |
389 | /* no such file? */ |
390 | if(!g_file_test(filename, G_FILE_TEST_EXISTS)) { |
391 | printf("gcvote: no such file\n"); |
392 | free(filename); |
393 | return NULL; |
394 | } |
395 | |
396 | LIBXML_TEST_VERSION; |
397 | xmlDoc *doc = xmlReadFile(filename, NULL, 0); |
398 | |
399 | if(doc == NULL) { |
400 | printf("gcvote: error, could not parse file %s\n", filename); |
401 | free(filename); |
402 | return NULL; |
403 | } |
404 | |
405 | free(filename); |
406 | |
407 | /* in this case this will sure only return one result */ |
408 | gcvote_t *votes = parse_doc(doc); |
409 | |
410 | if(!votes) { |
411 | printf("gcvote: error, no vote found\n"); |
412 | free(filename); |
413 | return NULL; |
414 | } |
415 | |
416 | vote_t *vote = g_new0(vote_t, 1); |
417 | vote->quality = votes->quality; |
418 | vote->votes = votes->votes; |
419 | |
420 | printf("gcvote: found vote %d/%d\n", vote->quality, vote->votes); |
421 | |
422 | gcvotes_free(votes); |
423 | |
424 | return vote; |
425 | } |