source: trunk/zoo-project/zoo-kernel/ulinet.c @ 825

Last change on this file since 825 was 825, checked in by djay, 3 years ago

Fix issue reported on the mailing list for downloading file depending on the format of the Cookie returned by the server.

  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 17.8 KB
Line 
1/*
2 *  ulinet.c
3 *
4 * Author : Gérald FENOY
5 *
6 * Copyright (c) 2008-2015 GeoLabs SARL
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 *
26 */
27
28#define _ULINET
29#define MAX_WAIT_MSECS 180*1000 /* Wait max. 180 seconds */
30#include "ulinet.h"
31#include <assert.h>
32#include <ctype.h>
33
34/**
35 * Write the downloaded content to a _HINTERNET structure
36 *
37 * @param buffer the buffer to read
38 * @param size size of each member
39 * @param nmemb number of element to read
40 * @param data the _HINTERNET structure to write in
41 * @return the size red, -1 if buffer is NULL
42 */
43size_t write_data_into(void *buffer, size_t size, size_t nmemb, void *data){
44  size_t realsize = size * nmemb;
45  _HINTERNET *psInternet;
46  if(buffer==NULL){
47    buffer=NULL;
48    return -1;
49  }
50  psInternet=(_HINTERNET *)data;
51  if(psInternet->pabyData){
52    psInternet->pabyData=(unsigned char*)realloc(psInternet->pabyData,psInternet->nDataLen+realsize+1);
53    psInternet->nDataAlloc+=psInternet->nDataLen+realsize+1;
54  }
55  else{
56    psInternet->pabyData=(unsigned char*)malloc(psInternet->nDataLen+realsize+1);
57    psInternet->nDataAlloc=realsize+1;
58  }
59
60  if (psInternet->pabyData) {
61    memcpy( psInternet->pabyData + psInternet->nDataLen, buffer, realsize);
62    psInternet->nDataLen += realsize;
63    psInternet->pabyData[psInternet->nDataLen] = 0;
64  }
65
66  buffer=NULL;
67  return realsize;
68}
69
70/**
71 * In case of presence of "Set-Cookie" in the headers red, store the cookie
72 * identifier in CCookie
73 *
74 * @param buffer the buffer to read
75 * @param size size of each member
76 * @param nmemb number of element to read
77 * @param data the _HINTERNET structure to write in
78 * @return the size red, -1 if buffer is NULL
79 * @see CCookie
80 */
81size_t header_write_data(void *buffer, size_t size, size_t nmemb, void *data){
82  if(strncmp("Set-Cookie: ",(char*)buffer,12)==0){
83    int i;
84    char* tmp;
85    for(i=0;i<12;i++)
86#ifndef WIN32
87      buffer++;
88#else
89        ;
90#endif
91    _HINTERNET *psInternet=(_HINTERNET *)data;
92    tmp=strtok(buffer,";");
93    if(tmp!=NULL){
94      sprintf(CCookie[psInternet->id],"%s",tmp);
95    }
96    tmp=strcat(env,CCookie[psInternet->id][0]);
97  }
98  return size * nmemb;//write_data_into(buffer,size,nmemb,data,HEADER);
99};
100
101/**
102 * Define the proxy to use for a CURL handler
103 *
104 * @param handle the CURL handler
105 * @param host the proxy host (including http://)
106 * @param port the proxy port
107 */
108void setProxy(CURL* handle,char* host,long port){
109  char* proxyDef=(char*)malloc((strlen(host)+10+2)*sizeof(char));
110  sprintf(proxyDef,"%s:%ld",host,port);
111  curl_easy_setopt(handle,CURLOPT_PROXY,proxyDef);
112  free(proxyDef);
113}
114
115/**
116 * MACOSX
117 */
118#if defined(macintosh) || (defined(__MACH__) && defined(__APPLE__))
119
120
121char* CFStringToCString(CFStringRef dest,char *buffer){
122  CFStringEncoding encoding = kCFStringEncodingUTF8;
123  Boolean bool2 = CFStringGetCString(dest,buffer,1024,encoding);
124  if(bool2){
125    printf("Loaded into local_buffer");
126    return buffer;
127  }
128  return NULL;
129}
130
131OSStatus setProxiesForProtcol(CURL* handle,const char *proto){
132  OSStatus              err;
133  CFDictionaryRef proxyDict;
134  CFArrayRef            proxies;
135 
136  CFStringRef key_enabled = NULL;
137  CFStringRef key_host = NULL;
138  CFStringRef key_port = NULL;
139 
140  bool proxy_enabled;
141  char *proxy_host;
142  long proxy_port;
143 
144  proxyDict = NULL;
145  proxies = NULL;
146
147  err = noErr;
148  proxyDict = SCDynamicStoreCopyProxies(NULL);
149
150  if(strncmp(proto,"http",4)==0){
151      key_enabled=kSCPropNetProxiesHTTPEnable;
152      key_host=kSCPropNetProxiesHTTPProxy;
153      key_port=kSCPropNetProxiesHTTPPort;
154  }
155  else
156    if(strncmp(proto,"https",5)==0){
157      key_enabled=kSCPropNetProxiesHTTPSEnable;
158      key_host=kSCPropNetProxiesHTTPSProxy;
159      key_port=kSCPropNetProxiesHTTPSPort;
160    }
161
162  CFNumberGetValue(CFDictionaryGetValue(proxyDict,key_enabled),kCFNumberIntType,&proxy_enabled);
163  if(proxy_enabled){
164    CFNumberGetValue(CFDictionaryGetValue(proxyDict,key_port),CFNumberGetType(CFDictionaryGetValue(proxyDict,key_port)),&proxy_port);
165    char buffer[1024];
166    CFStringToCString(CFDictionaryGetValue(proxyDict,key_host),buffer);
167    proxy_host=buffer;
168
169#ifdef MSG_LAF_VERBOSE
170    printf("\n**[PROXY SETTINGS DETECTION %s (%d) %s:%li (%s)]**\n",proto,proxy_enabled,(char*)proxy_host,proxy_port,buffer);
171#endif
172
173    if (proxyDict == NULL) {
174      err = coreFoundationUnknownErr;
175    }
176
177    setProxy(handle,proxy_host,proxy_port);
178  }
179  return err;
180}
181#else
182/**
183 * Should autodetect the proxy configuration (do nothing on linux)
184 *
185 * @param handle a CURL handle
186 * @param proto the protocol requiring the use of a proxy
187 */
188int setProxiesForProtcol(CURL* handle,const char *proto){
189#ifdef MSG_LAF_VERBOSE
190  fprintf( stderr, "setProxiesForProtocol (do nothing) ...\n" );
191#endif
192  return 0;
193}
194#endif
195
196/**
197 * Create a HINTERNET
198 *
199 * @param lpszAgent the HTPP User-Agent to use to send requests
200 * @param  dwAccessType type of access required
201 * @param  lpszProxyName the name of the proxy server(s) to use
202 * @param  lpszProxyBypass ip address or host names which should not be routed
203 *  through the proxy
204 * @param  dwFlags Options (INTERNET_FLAG_ASYNC,INTERNET_FLAG_FROM_CACHE,INTERNET_FLAG_OFFLINE)
205 * @return the created HINTERNET
206 */
207HINTERNET InternetOpen(char* lpszAgent,int dwAccessType,char* lpszProxyName,char* lpszProxyBypass,int dwFlags){
208  HINTERNET ret;
209  ret.handle=curl_multi_init();
210  ret.agent=strdup(lpszAgent);
211  ret.nb=0;
212  ret.ihandle[ret.nb].header=NULL;
213  return ret;
214}
215
216/**
217 * Add missing headers to an existing _HINTERNET
218 *
219 *
220 * @param handle the _HINTERNET pointer
221 * @param key the header parameter name
222 * @param value the header parameter value
223 * @return 0 if the operation succeeded, -1 in other case.
224 */
225int AddMissingHeaderEntry(_HINTERNET* handle,const char* key,const char* value){
226  int length=strlen(key)+strlen(value)+3;
227  char *entry=(char*)malloc((length)*sizeof(char));
228  if(entry==NULL)
229    return -1;
230  snprintf (entry, length, "%s: %s", key, value);
231  handle->header = curl_slist_append (handle->header, entry);
232  free(entry);
233  return 0;
234}
235
236/**
237 * Verify if a host is protected (appear in [security] > hosts)
238 *
239 * @param protectedHosts string containing all the protected hosts (coma separated)
240 * @param url string used to extract the host from
241 * @return 1 if the host is listed as protected, 0 in other case
242 */
243int isProtectedHost(const char* protectedHosts,const char* url){
244  char *token, *saveptr;
245  token = strtok_r (url, "//", &saveptr);
246  int cnt=0;
247  char* host;
248  while(token!=NULL && cnt<=1){
249    fprintf(stderr,"%s %d %s \n",__FILE__,__LINE__,token);
250    if(cnt==1)
251      fprintf(stderr,"%s %d %s \n",__FILE__,__LINE__,strstr(protectedHosts,token));
252    fflush(stderr);
253    if(cnt==1 && strstr(protectedHosts,token)!=NULL){
254      fprintf(stderr,"%s %d %s \n",__FILE__,__LINE__,strstr(protectedHosts,token));
255      return 1;
256    }
257    token = strtok_r (NULL, "/", &saveptr);
258    cnt+=1;
259  }
260  return 0;
261}
262
263/**
264 * Add headers defined in [security] > attributes to an existing HINTERNET
265 * @see isProtectedHost, AddMissingHeaderEntry
266 *
267 * @param handle the _HINTERNET pointer
268 * @param conf the header parameter name
269 * @param value the header parameter value
270 * @return 0 if the operation succeeded, -1 in other case.
271 */
272void AddHeaderEntries(HINTERNET* handle,maps* conf){
273  map* passThrough=getMapFromMaps(conf,"security","attributes");
274  map* targetHosts=getMapFromMaps(conf,"security","hosts");
275  char* passedHeader[10];
276  int cnt=0;
277  if(passThrough!=NULL && targetHosts!=NULL){
278    char *tmp=zStrdup(passThrough->value);
279    char *token, *saveptr;
280    token = strtok_r (tmp, ",", &saveptr);
281    int i;
282    for(i=0;i<handle->nb;i++){
283      if(targetHosts->value[0]=='*' || isProtectedHost(targetHosts->value,handle->ihandle[i].url)==1){
284        while (token != NULL){
285          int length=strlen(token)+6;
286          char* tmp1=(char*)malloc(length*sizeof(char));
287          snprintf(tmp1,6,"HTTP_");
288          int j;
289          for(j=0;token[j]!='\0';j++){
290            if(token[j]!='-')
291              tmp1[5+j]=toupper(token[i]);
292            else
293              tmp1[5+j]='_';
294            tmp1[5+j+1]='\0';
295          }
296          fprintf(stderr,"%s %d %s \n",__FILE__,__LINE__,tmp1);
297          map* tmpMap = getMapFromMaps(conf,"renv",tmp1);
298          if(tmpMap!=NULL)         
299            AddMissingHeaderEntry(&handle->ihandle[i],token,tmpMap->value);
300          free(tmp1);
301          if(handle->ihandle[i].header!=NULL)
302            curl_easy_setopt(handle->ihandle[i].handle,CURLOPT_HTTPHEADER,handle->ihandle[i].header);
303          cnt+=1;
304          token = strtok_r (NULL, ",", &saveptr);
305        }
306      }
307    }
308    free(tmp);
309  }
310}
311
312/**
313 * Close a HINTERNET connection and free allocated resources
314 *
315 * @param handle0 the HINTERNET connection to close
316 */
317void InternetCloseHandle(HINTERNET* handle0){
318  int i=0;
319  for(i=0;i<handle0->nb;i++){
320    _HINTERNET handle=handle0->ihandle[i];
321    if(handle.hasCacheFile>0){
322      fclose(handle.file);
323      unlink(handle.filename);
324    }
325    else{
326      handle.pabyData = NULL;
327      handle.nDataAlloc = handle.nDataLen = 0;
328    }
329    if(handle0->ihandle[i].header!=NULL){
330      curl_slist_free_all(handle0->ihandle[i].header);
331      handle0->ihandle[i].header=NULL;
332    }
333    if(handle.post!=NULL)
334      free(handle.post);
335    if(handle.url!=NULL)
336      free(handle.url);
337    free(handle.mimeType);
338    handle.mimeType = NULL;
339  }
340  if(handle0->handle)
341    curl_multi_cleanup(handle0->handle);
342  free(handle0->agent);
343  for(i=handle0->nb-1;i>=0;i--){
344    free(handle0->waitingRequests[i]);
345  }
346}
347
348/**
349 * Create a new element in the download queue
350 *
351 * @param hInternet the HINTERNET connection to add the download link
352 * @param lpszUrl the url to download
353 * @param lpszHeaders the additional headers to be sent to the HTTP server
354 * @param dwHeadersLength the size of the additional headers
355 * @param dwFlags desired download mode (INTERNET_FLAG_NO_CACHE_WRITE for not using cache file)
356 * @param dwContext not used
357 */
358HINTERNET InternetOpenUrl(HINTERNET* hInternet,LPCTSTR lpszUrl,LPCTSTR lpszHeaders,size_t dwHeadersLength,size_t dwFlags,size_t dwContext){
359
360  char filename[255];
361  struct MemoryStruct header;
362
363  hInternet->ihandle[hInternet->nb].handle=curl_easy_init( );
364  hInternet->ihandle[hInternet->nb].hasCacheFile=0;
365  hInternet->ihandle[hInternet->nb].nDataAlloc = 0;
366  hInternet->ihandle[hInternet->nb].url = NULL;
367  hInternet->ihandle[hInternet->nb].mimeType = NULL;
368  hInternet->ihandle[hInternet->nb].nDataLen = 0;
369  hInternet->ihandle[hInternet->nb].id = hInternet->nb;
370  hInternet->ihandle[hInternet->nb].nDataAlloc = 0;
371  hInternet->ihandle[hInternet->nb].pabyData = NULL;
372  hInternet->ihandle[hInternet->nb].post = NULL;
373
374  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_COOKIEFILE, "ALL");
375#ifndef TIGER
376  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_COOKIELIST, "ALL");
377#endif
378  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_USERAGENT, hInternet->agent);
379 
380  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_FOLLOWLOCATION,1);
381  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_MAXREDIRS,3);
382 
383  header.memory=NULL;
384  header.size = 0;
385
386  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_HEADERFUNCTION, header_write_data);
387  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_WRITEHEADER, (void *)&header);
388
389#ifdef MSG_LAF_VERBOSE
390  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_VERBOSE, 1);
391#endif
392
393     
394  switch(dwFlags)
395    {
396    case INTERNET_FLAG_NO_CACHE_WRITE:
397      hInternet->ihandle[hInternet->nb].hasCacheFile=-1;
398      curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_WRITEFUNCTION, write_data_into);
399      curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_WRITEDATA, (void*)&hInternet->ihandle[hInternet->nb]);
400      break;
401    default:
402      sprintf(hInternet->ihandle[hInternet->nb].filename,"/tmp/ZOO_Cache%d",(int)time(NULL));
403      hInternet->ihandle[hInternet->nb].filename[24]=0;
404#ifdef MSG_LAF_VERBOSE
405      fprintf(stderr,"file=%s",hInternet->ihandle[hInternet->nb].filename);
406#endif
407      hInternet->ihandle[hInternet->nb].filename=filename;
408      hInternet->ihandle[hInternet->nb].file=fopen(hInternet->ihandle[hInternet->nb].filename,"w+");
409   
410      hInternet->ihandle[hInternet->nb].hasCacheFile=1;
411      curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_WRITEFUNCTION, NULL);
412      curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle, CURLOPT_WRITEDATA, hInternet->ihandle[hInternet->nb].file);
413      hInternet->ihandle[hInternet->nb].nDataLen=0;
414      break;
415    }
416#ifdef ULINET_DEBUG
417  fprintf(stderr,"URL (%s)\nBODY (%s)\n",lpszUrl,lpszHeaders);
418#endif
419  if(lpszHeaders!=NULL && strlen(lpszHeaders)>0){
420#ifdef MSG_LAF_VERBOSE
421    fprintf(stderr,"FROM ULINET !!");
422    fprintf(stderr,"HEADER : [%s] %d\n",lpszHeaders,dwHeadersLength);
423#endif
424    curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_POST,1);
425#ifdef ULINET_DEBUG
426    fprintf(stderr,"** (%s) %d **\n",lpszHeaders,dwHeadersLength);
427    curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_VERBOSE,1);
428#endif
429    hInternet->ihandle[hInternet->nb].post=strdup(lpszHeaders);
430    curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_POSTFIELDS,hInternet->ihandle[hInternet->nb].post);
431    curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_POSTFIELDSIZE,(long)dwHeadersLength);
432  }
433  if(hInternet->ihandle[hInternet->nb].header!=NULL)
434    curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_HTTPHEADER,hInternet->ihandle[hInternet->nb].header);
435
436  curl_easy_setopt(hInternet->ihandle[hInternet->nb].handle,CURLOPT_URL,lpszUrl);
437  hInternet->ihandle[hInternet->nb].url = zStrdup(lpszUrl);
438
439  curl_multi_add_handle(hInternet->handle,hInternet->ihandle[hInternet->nb].handle);
440 
441  hInternet->ihandle[hInternet->nb].header=NULL;
442  ++hInternet->nb;
443
444#ifdef ULINET_DEBUG
445  fprintf(stderr,"DEBUG MIMETYPE: %s\n",hInternet.mimeType);
446  fflush(stderr);
447#endif
448  return *hInternet;
449};
450
451/**
452 * Download all opened urls in the queue
453 *
454 * @param hInternet the HINTERNET structure containing the queue
455 * @return 0
456 */
457int processDownloads(HINTERNET* hInternet){
458  int still_running=0;
459  int msgs_left=0;
460  int i=0;
461  do{
462    curl_multi_perform(hInternet->handle, &still_running);
463  }while(still_running); 
464  for(i=0;i<hInternet->nb;i++){
465    char *tmp;
466    curl_easy_getinfo(hInternet->ihandle[i].handle,CURLINFO_CONTENT_TYPE,&tmp);
467    if(tmp!=NULL)
468      hInternet->ihandle[i].mimeType=strdup(tmp);
469    curl_easy_getinfo(hInternet->ihandle[i].handle,CURLINFO_RESPONSE_CODE,&hInternet->ihandle[i].code);
470    curl_multi_remove_handle(hInternet->handle, hInternet->ihandle[i].handle);
471    curl_easy_cleanup(hInternet->ihandle[i].handle);
472  }
473  return 0;
474}
475
476/**
477 * Initialize the CCookie for a specific index (hInternet.nb)
478 *
479 * @param hInternet the HINTERNET structure to know the CCookie index to reset
480 * @return 1
481 * @see HINTERNET
482 */
483int freeCookieList(HINTERNET hInternet){
484  memset(&CCookie[hInternet.nb][0],0,1024);
485#ifndef TIGER
486  curl_easy_setopt(hInternet.ihandle[hInternet.nb].handle, CURLOPT_COOKIELIST, "ALL");
487#endif
488  return 1;
489}
490
491/**
492 * Copy a downloaded content
493 *
494 * @param hInternet the _HINTERNET structure
495 * @param lpBuffer the memory space to copy the downloaded content
496 * @param dwNumberOfBytesToRead the size of lpBuffer
497 * @param lpdwNumberOfBytesRead number of bytes red
498 * @return 1 on success, 0 if failure
499 */
500int InternetReadFile(_HINTERNET hInternet,LPVOID lpBuffer,int dwNumberOfBytesToRead, size_t *lpdwNumberOfBytesRead){
501  int dwDataSize;
502
503  if(hInternet.hasCacheFile>0){
504    fseek (hInternet.file , 0 , SEEK_END);
505    dwDataSize=ftell(hInternet.file); //taille du ficher
506    rewind (hInternet.file);
507  }
508  else{
509    memset(lpBuffer,0,hInternet.nDataLen+1);
510    memcpy(lpBuffer, hInternet.pabyData, hInternet.nDataLen );
511    dwDataSize=hInternet.nDataLen;
512    free( hInternet.pabyData );
513    hInternet.pabyData=NULL;
514  }
515
516  if( dwNumberOfBytesToRead /* buffer size */ < dwDataSize )
517    return 0;
518
519#ifdef MSG_LAF_VERBOSE
520  printf("\nfile size : %dko\n",dwDataSize/1024);
521#endif
522
523  if(hInternet.hasCacheFile>0){
524    *lpdwNumberOfBytesRead = fread(lpBuffer,1,dwDataSize,hInternet.file); 
525  }
526  else{
527    *lpdwNumberOfBytesRead = hInternet.nDataLen;
528    free( hInternet.pabyData );
529    hInternet.pabyData = NULL;
530    hInternet.nDataAlloc = hInternet.nDataLen = 0;
531  }
532
533  CCookie[hInternet.id][0]=0;
534
535  if( *lpdwNumberOfBytesRead < dwDataSize )
536      return 0;
537  else
538      return 1; // TRUE
539}
540
541
542/**
543 * Use basic authentication for accessing a resource
544 *
545 * @param hInternet the _HINTERNET structure
546 * @param login the login to use to authenticate
547 * @param passwd the password to use to authenticate
548 */
549int setBasicAuth(HINTERNET hInternet,char* login,char* passwd){
550  char *tmp;
551  tmp=(char*)malloc((strlen(login)+strlen(passwd)+2)*sizeof(char));
552  sprintf(tmp,"%s:%s",login,passwd);
553  if(curl_easy_setopt(hInternet.ihandle[hInternet.nb].handle,CURLOPT_USERPWD,tmp)==CURLE_OUT_OF_MEMORY){
554    free(tmp);
555    return -1;
556  }
557  curl_easy_setopt(hInternet.ihandle[hInternet.nb].handle, CURLOPT_HTTPAUTH,CURLAUTH_ANY);
558  free(tmp);
559  return 0;
560}
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