src/win32.cc

   1 /*
   2  * $Id$
   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-old.h"
  37 #include "squid_windows.h"
  38
  39 #if _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     Ip::Address localhost;
  59     Ip::Address handle0;
  60     Ip::Address handle1;
  61     struct addrinfo *AI = NULL;
  62
  63     localhost.SetLocalhost();
  64
  65     /* INET6: back-compatible: localhost pipes default to IPv4 unless set otherwise.
  66      *        it is blocked by untested helpers on many admins configs
  67      *        if this proves to be wrong it can die easily.
  68      */
  69     localhost.SetIPv4();
  70
  71     handles[0] = handles[1] = -1;
  72
  73     statCounter.syscalls.sock.sockets++;
  74
  75     handle0 = localhost;
  76     handle0.SetPort(0);
  77     handle0.GetAddrInfo(AI);
  78
  79     if ((new_socket = socket(AI->ai_family, AI->ai_socktype, AI->ai_protocol)) < 0)
  80         return -1;
  81
  82     if (bind(new_socket, AI->ai_addr, AI->ai_addrlen) < 0 ||
  83             listen(new_socket, 1) < 0 || getsockname(new_socket, AI->ai_addr, &(AI->ai_addrlen) ) < 0 ||
  84             (handles[1] = socket(AI->ai_family, AI->ai_socktype, 0)) < 0) {
  85         closesocket(new_socket);
  86         return -1;
  87     }
  88
  89     handle0 = *AI; // retrieve the new details returned by connect()
  90
  91     handle1.SetPort(handle1.GetPort());
  92     handle1.GetAddrInfo(AI);
  93
  94     if (connect(handles[1], AI->ai_addr, AI->ai_addrlen) < 0 ||
  95             (handles[0] = accept(new_socket, AI->ai_addr, &(AI->ai_addrlen)) ) < 0) {
  96         closesocket(handles[1]);
  97         handles[1] = -1;
  98         closesocket(new_socket);
  99         return -1;
 100     }
 101
 102     closesocket(new_socket);
 103
 104     F = &fd_table[handles[0]];
 105     F->local_addr = handle0;
 106
 107     F = &fd_table[handles[1]];
 108     F->local_addr = localhost;
 109     handle1.NtoA(F->ipaddr, MAX_IPSTRLEN);
 110     F->remote_port = handle1.GetPort();
 111
 112     return 0;
 113 }
 114
 115 int WIN32_getrusage(int who, struct rusage *usage)
 116 {
 117 #if HAVE_WIN32_PSAPI
 118
 119     if (WIN32_OS_version >= _WIN_OS_WINNT) {
 120         /* On Windows NT and later call PSAPI.DLL for process Memory */
 121         /* informations -- Guido Serassio                       */
 122         HANDLE hProcess;
 123         PROCESS_MEMORY_COUNTERS pmc;
 124         hProcess = OpenProcess(PROCESS_QUERY_INFORMATION |
 125                                PROCESS_VM_READ,
 126                                FALSE, GetCurrentProcessId());
 127         {
 128             /* Microsoft CRT doesn't have getrusage function,  */
 129             /* so we get process CPU time information from PSAPI.DLL. */
 130             FILETIME ftCreate, ftExit, ftKernel, ftUser;
 131
 132             if (GetProcessTimes(hProcess, &ftCreate, &ftExit, &ftKernel, &ftUser)) {
 133                 int64_t *ptUser = (int64_t *)&ftUser;
 134                 int64_t tUser64 = *ptUser / 10;
 135                 int64_t *ptKernel = (int64_t *)&ftKernel;
 136                 int64_t tKernel64 = *ptKernel / 10;
 137                 usage->ru_utime.tv_sec =(long)(tUser64 / 1000000);
 138                 usage->ru_stime.tv_sec =(long)(tKernel64 / 1000000);
 139                 usage->ru_utime.tv_usec =(long)(tUser64 % 1000000);
 140                 usage->ru_stime.tv_usec =(long)(tKernel64 % 1000000);
 141             } else {
 142                 CloseHandle( hProcess );
 143                 return -1;
 144             }
 145         }
 146
 147         if (GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc))) {
 148             usage->ru_maxrss=(DWORD)(pmc.WorkingSetSize / getpagesize());
 149             usage->ru_majflt=pmc.PageFaultCount;
 150         } else {
 151             CloseHandle( hProcess );
 152             return -1;
 153         }
 154
 155         CloseHandle( hProcess );
 156     }
 157
 158 #endif
 159     return 0;
 160 }
 161
 162
 163 int Win32__WSAFDIsSet(int fd, fd_set FAR * set
 164                      )
 165 {
 166     fde *F = &fd_table[fd];
 167     SOCKET s = F->win32.handle;
 168
 169     return __WSAFDIsSet(s, set);
 170 }
 171
 172 LONG CALLBACK WIN32_ExceptionHandler(EXCEPTION_POINTERS* ep)
 173 {
 174     EXCEPTION_RECORD* er;
 175
 176     er = ep->ExceptionRecord;
 177
 178     switch (er->ExceptionCode) {
 179
 180     case EXCEPTION_ACCESS_VIOLATION:
 181         raise(SIGSEGV);
 182         break;
 183
 184     case EXCEPTION_DATATYPE_MISALIGNMENT:
 185
 186     case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 187
 188     case EXCEPTION_IN_PAGE_ERROR:
 189         death(SIGBUS);
 190         break;
 191
 192     default:
 193         break;
 194     }
 195
 196     return EXCEPTION_CONTINUE_SEARCH;
 197 }
 198
 199
 200 void WIN32_ExceptionHandlerInit()
 201 {
 202 #if !defined(_DEBUG)
 203
 204     if (Win32_Old_ExceptionHandler == NULL)
 205         Win32_Old_ExceptionHandler = SetUnhandledExceptionFilter(WIN32_ExceptionHandler);
 206
 207 #endif
 208 }
 209
 210 void WIN32_ExceptionHandlerCleanup()
 211 {
 212     if (Win32_Old_ExceptionHandler != NULL)
 213         SetUnhandledExceptionFilter(Win32_Old_ExceptionHandler);
 214 }
 215
 216 #endif /* SQUID_MSWIN_ */