text: /*
   * Wininet - Utility functions
   *
   * Copyright 1999 Corel Corporation
   * Copyright 2002 CodeWeavers Inc.
   *
   * Ulrich Czekalla
   * Aric Stewart
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include "config.h"
  #include "wine/port.h"
  
  #if defined(__MINGW32__) || defined (_MSC_VER)
  #include <ws2tcpip.h>
  #endif
  
  #include <stdarg.h>
  #include <stdlib.h>
  #include <string.h>
  #include <time.h>
  
  #include "windef.h"
  #include "winbase.h"
  #include "wininet.h"
  #include "winnls.h"
  
  #include "wine/debug.h"
  #include "internet.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(wininet);
  
  #ifndef HAVE_GETADDRINFO
  
  /* critical section to protect non-reentrant gethostbyname() */
  static CRITICAL_SECTION cs_gethostbyname;
  static CRITICAL_SECTION_DEBUG critsect_debug =
  {
      0, 0, &cs_gethostbyname,
      { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
        0, 0, { (DWORD_PTR)(__FILE__ ": cs_gethostbyname") }
  };
  static CRITICAL_SECTION cs_gethostbyname = { &critsect_debug, -1, 0, 0, 0, 0 };
  
  #endif
  
  #define TIME_STRING_LEN  30
  
  time_t ConvertTimeString(LPCWSTR asctime)
  {
      WCHAR tmpChar[TIME_STRING_LEN];
      WCHAR *tmpChar2;
      struct tm t;
      int timelen = strlenW(asctime);
  
      if(!timelen)
          return 0;
  
      /* FIXME: the atoiWs below rely on that tmpChar is \0 padded */
      memset( tmpChar, 0, sizeof(tmpChar) );
      lstrcpynW(tmpChar, asctime, TIME_STRING_LEN);
  
      /* Assert that the string is the expected length */
      if (strlenW(asctime) >= TIME_STRING_LEN) FIXME("\n");
  
      /* Convert a time such as 'Mon, 15 Nov 1999 16:09:35 GMT' into a SYSTEMTIME structure
       * We assume the time is in this format
       * and divide it into easy to swallow chunks
       */
      tmpChar[3]='\0';
      tmpChar[7]='\0';
      tmpChar[11]='\0';
      tmpChar[16]='\0';
      tmpChar[19]='\0';
      tmpChar[22]='\0';
      tmpChar[25]='\0';
  
      memset( &t, 0, sizeof(t) );
      t.tm_year = atoiW(tmpChar+12) - 1900;
      t.tm_mday = atoiW(tmpChar+5);
      t.tm_hour = atoiW(tmpChar+17);
      t.tm_min = atoiW(tmpChar+20);
      t.tm_sec = atoiW(tmpChar+23);
  
      /* and month */
      tmpChar2 = tmpChar + 8;
      switch(tmpChar2[2])
      {
          case 'n':
              if(tmpChar2[1]=='a')
                  t.tm_mon = 0;
              else
                  t.tm_mon = 5;
              break;
          case 'b':
              t.tm_mon = 1;
              break;
          case 'r':
              if(tmpChar2[1]=='a')
                  t.tm_mon = 2;
              else
                  t.tm_mon = 3;
              break;
          case 'y':
              t.tm_mon = 4;
              break;
          case 'l':
              t.tm_mon = 6;
              break;
          case 'g':
              t.tm_mon = 7;
              break;
          case 'p':
              t.tm_mon = 8;
              break;
          case 't':
              t.tm_mon = 9;
              break;
          case 'v':
              t.tm_mon = 10;
              break;
          case 'c':
              t.tm_mon = 11;
              break;
          default:
              FIXME("\n");
      }
  
      return mktime(&t);
  }
  
  
  BOOL GetAddress(LPCWSTR lpszServerName, INTERNET_PORT nServerPort,
  	struct sockaddr *psa, socklen_t *sa_len)
  {
      WCHAR *found;
      char *name;
      int len, sz;
  #ifdef HAVE_GETADDRINFO
      struct addrinfo *res, hints;
      int ret;
  #else
      struct hostent *phe;
      struct sockaddr_in *sin = (struct sockaddr_in *)psa;
  #endif
  
      TRACE("%s\n", debugstr_w(lpszServerName));
  
      /* Validate server name first
       * Check if there is sth. like
       * pinger.macromedia.com:80
       * if yes, eliminate the :80....
       */
      found = strchrW(lpszServerName, ':');
      if (found)
          len = found - lpszServerName;
      else
          len = strlenW(lpszServerName);
  
      sz = WideCharToMultiByte( CP_UNIXCP, 0, lpszServerName, len, NULL, 0, NULL, NULL );
      if (!(name = HeapAlloc( GetProcessHeap(), 0, sz + 1 ))) return FALSE;
      WideCharToMultiByte( CP_UNIXCP, 0, lpszServerName, len, name, sz, NULL, NULL );
      name[sz] = 0;
  
  #ifdef HAVE_GETADDRINFO
      memset( &hints, 0, sizeof(struct addrinfo) );
      /* Prefer IPv4 to IPv6 addresses, since some servers do not listen on
       * their IPv6 addresses even though they have IPv6 addresses in the DNS.
       */
      hints.ai_family = AF_INET;
  
      ret = getaddrinfo( name, NULL, &hints, &res );
      HeapFree( GetProcessHeap(), 0, name );
      if (ret != 0)
      {
          TRACE("failed to get IPv4 address of %s (%s), retrying with IPv6\n", debugstr_w(lpszServerName), gai_strerror(ret));
          hints.ai_family = AF_INET6;
          ret = getaddrinfo( name, NULL, &hints, &res );
          if (ret != 0)
          {
              TRACE("failed to get address of %s (%s)\n", debugstr_w(lpszServerName), gai_strerror(ret));
              return FALSE;
          }
      }
      if (*sa_len < res->ai_addrlen)
      {
          WARN("address too small\n");
          freeaddrinfo( res );
          return FALSE;
      }
      *sa_len = res->ai_addrlen;
      memcpy( psa, res->ai_addr, res->ai_addrlen );
      /* Copy port */
      switch (res->ai_family)
      {
      case AF_INET:
          ((struct sockaddr_in *)psa)->sin_port = htons(nServerPort);
          break;
      case AF_INET6:
          ((struct sockaddr_in6 *)psa)->sin6_port = htons(nServerPort);
          break;
      }
  
      freeaddrinfo( res );
  #else
      EnterCriticalSection( &cs_gethostbyname );
      phe = gethostbyname(name);
      HeapFree( GetProcessHeap(), 0, name );
  
      if (NULL == phe)
      {
          TRACE("failed to get address of %s (%d)\n", debugstr_w(lpszServerName), h_errno);
          LeaveCriticalSection( &cs_gethostbyname );
          return FALSE;
      }
      if (*sa_len < sizeof(struct sockaddr_in))
      {
          WARN("address too small\n");
          LeaveCriticalSection( &cs_gethostbyname );
          return FALSE;
      }
      *sa_len = sizeof(struct sockaddr_in);
      memset(sin,0,sizeof(struct sockaddr_in));
      memcpy((char *)&sin->sin_addr, phe->h_addr, phe->h_length);
      sin->sin_family = phe->h_addrtype;
      sin->sin_port = htons(nServerPort);
  
      LeaveCriticalSection( &cs_gethostbyname );
  #endif
      return TRUE;
  }
  
  /*
   * Helper function for sending async Callbacks
   */
  
  static const char *get_callback_name(DWORD dwInternetStatus) {
      static const wininet_flag_info internet_status[] = {
  #define FE(x) { x, #x }
  	FE(INTERNET_STATUS_RESOLVING_NAME),
  	FE(INTERNET_STATUS_NAME_RESOLVED),
  	FE(INTERNET_STATUS_CONNECTING_TO_SERVER),
  	FE(INTERNET_STATUS_CONNECTED_TO_SERVER),
  	FE(INTERNET_STATUS_SENDING_REQUEST),
  	FE(INTERNET_STATUS_REQUEST_SENT),
  	FE(INTERNET_STATUS_RECEIVING_RESPONSE),
  	FE(INTERNET_STATUS_RESPONSE_RECEIVED),
  	FE(INTERNET_STATUS_CTL_RESPONSE_RECEIVED),
  	FE(INTERNET_STATUS_PREFETCH),
  	FE(INTERNET_STATUS_CLOSING_CONNECTION),
  	FE(INTERNET_STATUS_CONNECTION_CLOSED),
  	FE(INTERNET_STATUS_HANDLE_CREATED),
  	FE(INTERNET_STATUS_HANDLE_CLOSING),
  	FE(INTERNET_STATUS_REQUEST_COMPLETE),
  	FE(INTERNET_STATUS_REDIRECT),
  	FE(INTERNET_STATUS_INTERMEDIATE_RESPONSE),
  	FE(INTERNET_STATUS_USER_INPUT_REQUIRED),
  	FE(INTERNET_STATUS_STATE_CHANGE),
  	FE(INTERNET_STATUS_COOKIE_SENT),
  	FE(INTERNET_STATUS_COOKIE_RECEIVED),
  	FE(INTERNET_STATUS_PRIVACY_IMPACTED),
  	FE(INTERNET_STATUS_P3P_HEADER),
  	FE(INTERNET_STATUS_P3P_POLICYREF),
  	FE(INTERNET_STATUS_COOKIE_HISTORY)
  #undef FE
      };
      DWORD i;
  
      for (i = 0; i < (sizeof(internet_status) / sizeof(internet_status[0])); i++) {
  	if (internet_status[i].val == dwInternetStatus) return internet_status[i].name;
      }
      return "Unknown";
  }
  
  VOID INTERNET_SendCallback(object_header_t *hdr, DWORD_PTR dwContext,
                             DWORD dwInternetStatus, LPVOID lpvStatusInfo,
                             DWORD dwStatusInfoLength)
  {
      LPVOID lpvNewInfo = NULL;
  
      if( !hdr->lpfnStatusCB )
          return;
  
      /* the IE5 version of wininet does not
         send callbacks if dwContext is zero */
      if( !dwContext )
          return;
  
      lpvNewInfo = lpvStatusInfo;
      if(hdr->dwInternalFlags & INET_CALLBACKW) {
          switch(dwInternetStatus) {
          case INTERNET_STATUS_NAME_RESOLVED:
          case INTERNET_STATUS_CONNECTING_TO_SERVER:
          case INTERNET_STATUS_CONNECTED_TO_SERVER:
              lpvNewInfo = heap_strdupAtoW(lpvStatusInfo);
              break;
          case INTERNET_STATUS_RESOLVING_NAME:
          case INTERNET_STATUS_REDIRECT:
              lpvNewInfo = heap_strdupW(lpvStatusInfo);
              break;
          }
      }else {
          switch(dwInternetStatus)
          {
          case INTERNET_STATUS_NAME_RESOLVED:
          case INTERNET_STATUS_CONNECTING_TO_SERVER:
          case INTERNET_STATUS_CONNECTED_TO_SERVER:
              lpvNewInfo = HeapAlloc(GetProcessHeap(), 0, strlen(lpvStatusInfo) + 1);
              if (lpvNewInfo) strcpy(lpvNewInfo, lpvStatusInfo);
              break;
          case INTERNET_STATUS_RESOLVING_NAME:
          case INTERNET_STATUS_REDIRECT:
              lpvNewInfo = heap_strdupWtoA(lpvStatusInfo);
              break;
          }
      }
      
      TRACE(" callback(%p) (%p (%p), %08lx, %d (%s), %p, %d)\n",
  	  hdr->lpfnStatusCB, hdr->hInternet, hdr, dwContext, dwInternetStatus, get_callback_name(dwInternetStatus),
  	  lpvNewInfo, dwStatusInfoLength);
      
      hdr->lpfnStatusCB(hdr->hInternet, dwContext, dwInternetStatus,
                        lpvNewInfo, dwStatusInfoLength);
  
      TRACE(" end callback().\n");
  
      if(lpvNewInfo != lpvStatusInfo)
          HeapFree(GetProcessHeap(), 0, lpvNewInfo);
  }
  
  static void SendAsyncCallbackProc(WORKREQUEST *workRequest)
  {
      struct WORKREQ_SENDCALLBACK const *req = &workRequest->u.SendCallback;
  
      TRACE("%p\n", workRequest->hdr);
  
      INTERNET_SendCallback(workRequest->hdr,
                            req->dwContext, req->dwInternetStatus, req->lpvStatusInfo,
                            req->dwStatusInfoLength);
  
      /* And frees the copy of the status info */
      HeapFree(GetProcessHeap(), 0, req->lpvStatusInfo);
  }
  
  void SendAsyncCallback(object_header_t *hdr, DWORD_PTR dwContext,
                         DWORD dwInternetStatus, LPVOID lpvStatusInfo,
                         DWORD dwStatusInfoLength)
  {
      TRACE("(%p, %08lx, %d (%s), %p, %d): %sasync call with callback %p\n",
  	  hdr, dwContext, dwInternetStatus, get_callback_name(dwInternetStatus),
  	  lpvStatusInfo, dwStatusInfoLength,
  	  hdr->dwFlags & INTERNET_FLAG_ASYNC ? "" : "non ",
  	  hdr->lpfnStatusCB);
      
      if (!(hdr->lpfnStatusCB))
  	return;
      
      if (hdr->dwFlags & INTERNET_FLAG_ASYNC)
      {
  	WORKREQUEST workRequest;
  	struct WORKREQ_SENDCALLBACK *req;
  	void *lpvStatusInfo_copy = lpvStatusInfo;
  
  	if (lpvStatusInfo)
  	{
  	    lpvStatusInfo_copy = HeapAlloc(GetProcessHeap(), 0, dwStatusInfoLength);
  	    memcpy(lpvStatusInfo_copy, lpvStatusInfo, dwStatusInfoLength);
  	}
  
  	workRequest.asyncproc = SendAsyncCallbackProc;
  	workRequest.hdr = WININET_AddRef( hdr );
  	req = &workRequest.u.SendCallback;
  	req->dwContext = dwContext;
  	req->dwInternetStatus = dwInternetStatus;
  	req->lpvStatusInfo = lpvStatusInfo_copy;
  	req->dwStatusInfoLength = dwStatusInfoLength;
  	
  	INTERNET_AsyncCall(&workRequest);
      }
      else
  	INTERNET_SendCallback(hdr, dwContext, dwInternetStatus,
  			      lpvStatusInfo, dwStatusInfoLength);
  }
  