src/win32.cc

   1 /*
   2  * $Id: win32.cc,v 1.27 2008/01/20 17:13:22 serassio Exp $
   3  *
   4  * Windows support
   5  * AUTHOR: Guido Serassio <serassio@squid-cache.org>
   6  * inspired by previous work by Romeo Anghelache & Eric Stern.
   7  *
   8  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   9  * ----------------------------------------------------------
  10  *
  11  *  Squid is the result of efforts by numerous individuals from
  12  *  the Internet community; see the CONTRIBUTORS file for full
  13  *  details.   Many organizations have provided support for Squid's
  14  *  development; see the SPONSORS file for full details.  Squid is
  15  *  Copyrighted (C) 2001 by the Regents of the University of
  16  *  California; see the COPYRIGHT file for full details.  Squid
  17  *  incorporates software developed and/or copyrighted by other
  18  *  sources; see the CREDITS file for full details.
  19  *
  20  *  This program is free software; you can redistribute it and/or modify
  21  *  it under the terms of the GNU General Public License as published by
  22  *  the Free Software Foundation; either version 2 of the License, or
  23  *  (at your option) any later version.
  24  *
  25  *  This program is distributed in the hope that it will be useful,
  26  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  *  GNU General Public License for more details.
  29  *
  30  *  You should have received a copy of the GNU General Public License
  31  *  along with this program; if not, write to the Free Software
  32  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  33  *
  34  */
  35
  36 #include "squid.h"
  37 #include "squid_windows.h"
  38
  39 #ifdef _SQUID_MSWIN_
  40 #if HAVE_WIN32_PSAPI
  41 #include <psapi.h>
  42 #endif
  43 #ifndef _MSWSOCK_
  44 #include <mswsock.h>
  45 #endif
  46 #include <fde.h>
  47
  48 SQUIDCEXTERN LPCRITICAL_SECTION dbg_mutex;
  49 void WIN32_ExceptionHandlerCleanup(void);
  50 static LPTOP_LEVEL_EXCEPTION_FILTER Win32_Old_ExceptionHandler = NULL;
  51
  52
  53 int WIN32_pipe(int handles[2])
  54 {
  55     int new_socket;
  56     fde *F = NULL;
  57
  58     IpAddress localhost;
  59     IpAddress handle0;
  60     IpAddress handle1;
  61     struct addrinfo *AI = NULL;
  62
  63     localhost.SetLocalhost();
  64
  65 #if !IPV6_SPECIAL_LOCALHOST
  66     /* INET6: back-compatible: localhost pipes default to IPv4 unless set otherwise.
  67      *        it is blocked by untested helpers on many admins configs
  68      *        if this proves to be wrong it can die easily.
  69      */
  70     localhost.SetIPv4();
  71 #endif
  72
  73     handles[0] = handles[1] = -1;
  74
  75     statCounter.syscalls.sock.sockets++;
  76
  77     handle0 = localhost;
  78     handle0.SetPort(0);
  79     handle0.GetAddrInfo(AI);
  80
  81     if ((new_socket = socket(AI->ai_family, AI->ai_socktype, AI->ai_protocol)) < 0)
  82         return -1;
  83
  84     if (bind(new_socket, AI->ai_addr, AI->ai_addrlen) < 0 ||
  85             listen(new_socket, 1) < 0 || getsockname(new_socket, AI->ai_addr, &(AI->ai_addrlen) ) < 0 ||
  86             (handles[1] = socket(AI->ai_family, AI->ai_socktype, 0)) < 0) {
  87         closesocket(new_socket);
  88         return -1;
  89     }
  90
  91     handle0 = *AI; // retrieve the new details returned by connect()
  92
  93     handle1.SetPort(handle1.GetPort());
  94     handle1.GetAddrInfo(AI);
  95
  96     if (connect(handles[1], AI->ai_addr, AI->ai_addrlen) < 0 ||
  97             (handles[0] = accept(new_socket, AI->ai_addr, &(AI->ai_addrlen)) ) < 0) {
  98         closesocket(handles[1]);
  99         handles[1] = -1;
 100         closesocket(new_socket);
 101         return -1;
 102     }
 103
 104     closesocket(new_socket);
 105
 106     F = &fd_table[handles[0]];
 107     F->local_addr = handle0;
 108
 109     F = &fd_table[handles[1]];
 110     F->local_addr = localhost;
 111     handle1.NtoA(F->ipaddr, MAX_IPSTRLEN);
 112     F->remote_port = handle1.GetPort();
 113
 114     return 0;
 115 }
 116
 117 int WIN32_getrusage(int who, struct rusage *usage)
 118 {
 119 #if HAVE_WIN32_PSAPI
 120
 121     if ((WIN32_OS_version == _WIN_OS_WINNT) || (WIN32_OS_version == _WIN_OS_WIN2K)
 122             || (WIN32_OS_version == _WIN_OS_WINXP) || (WIN32_OS_version == _WIN_OS_WINNET)) {
 123         /* On Windows NT/2000 call PSAPI.DLL for process Memory */
 124         /* informations -- Guido Serassio                       */
 125         HANDLE hProcess;
 126         PROCESS_MEMORY_COUNTERS pmc;
 127         hProcess = OpenProcess(PROCESS_QUERY_INFORMATION |
 128                                PROCESS_VM_READ,
 129                                FALSE, GetCurrentProcessId());
 130         {
 131             /* Microsoft CRT doesn't have getrusage function,  */
 132             /* so we get process CPU time information from PSAPI.DLL. */
 133             FILETIME ftCreate, ftExit, ftKernel, ftUser;
 134
 135             if (GetProcessTimes(hProcess, &ftCreate, &ftExit, &ftKernel, &ftUser)) {
 136                 int64_t *ptUser = (int64_t *)&ftUser;
 137                 int64_t tUser64 = *ptUser / 10;
 138                 int64_t *ptKernel = (int64_t *)&ftKernel;
 139                 int64_t tKernel64 = *ptKernel / 10;
 140                 usage->ru_utime.tv_sec =(long)(tUser64 / 1000000);
 141                 usage->ru_stime.tv_sec =(long)(tKernel64 / 1000000);
 142                 usage->ru_utime.tv_usec =(long)(tUser64 % 1000000);
 143                 usage->ru_stime.tv_usec =(long)(tKernel64 % 1000000);
 144             } else {
 145                 CloseHandle( hProcess );
 146                 return -1;
 147             }
 148         }
 149
 150         if (GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc))) {
 151             usage->ru_maxrss=(DWORD)(pmc.WorkingSetSize / getpagesize());
 152             usage->ru_majflt=pmc.PageFaultCount;
 153         } else {
 154             CloseHandle( hProcess );
 155             return -1;
 156         }
 157
 158         CloseHandle( hProcess );
 159     }
 160
 161 #endif
 162     return 0;
 163 }
 164
 165
 166 int Win32__WSAFDIsSet(int fd, fd_set FAR * set
 167                      )
 168 {
 169     fde *F = &fd_table[fd];
 170     SOCKET s = F->win32.handle;
 171
 172     return __WSAFDIsSet(s, set);
 173 }
 174
 175 LONG CALLBACK WIN32_ExceptionHandler(EXCEPTION_POINTERS* ep)
 176 {
 177     EXCEPTION_RECORD* er;
 178
 179     er = ep->ExceptionRecord;
 180
 181     switch (er->ExceptionCode) {
 182
 183     case EXCEPTION_ACCESS_VIOLATION:
 184         raise(SIGSEGV);
 185         break;
 186
 187     case EXCEPTION_DATATYPE_MISALIGNMENT:
 188
 189     case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 190
 191     case EXCEPTION_IN_PAGE_ERROR:
 192         death(SIGBUS);
 193         break;
 194
 195     default:
 196         break;
 197     }
 198
 199     return EXCEPTION_CONTINUE_SEARCH;
 200 }
 201
 202
 203 void WIN32_ExceptionHandlerInit()
 204 {
 205 #if !defined(_DEBUG)
 206
 207     if (Win32_Old_ExceptionHandler == NULL)
 208         Win32_Old_ExceptionHandler = SetUnhandledExceptionFilter(WIN32_ExceptionHandler);
 209
 210 #endif
 211 }
 212
 213 void WIN32_ExceptionHandlerCleanup()
 214 {
 215     if (Win32_Old_ExceptionHandler != NULL)
 216         SetUnhandledExceptionFilter(Win32_Old_ExceptionHandler);
 217 }
 218
 219 #endif /* SQUID_MSWIN_ */