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.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 int WIN32_pipe(int handles[2])
  53 {
  54     int new_socket;
  55     fde *F = NULL;
  56
  57     Ip::Address localhost;
  58     Ip::Address handle0;
  59     Ip::Address handle1;
  60     struct addrinfo *AI = NULL;
  61
  62     localhost.SetLocalhost();
  63
  64     /* INET6: back-compatible: localhost pipes default to IPv4 unless set otherwise.
  65      *        it is blocked by untested helpers on many admins configs
  66      *        if this proves to be wrong it can die easily.
  67      */
  68     localhost.SetIPv4();
  69
  70     handles[0] = handles[1] = -1;
  71
  72     ++statCounter.syscalls.sock.sockets;
  73
  74     handle0 = localhost;
  75     handle0.SetPort(0);
  76     handle0.GetAddrInfo(AI);
  77
  78     if ((new_socket = socket(AI->ai_family, AI->ai_socktype, AI->ai_protocol)) < 0)
  79         return -1;
  80
  81     if (bind(new_socket, AI->ai_addr, AI->ai_addrlen) < 0 ||
  82             listen(new_socket, 1) < 0 || getsockname(new_socket, AI->ai_addr, &(AI->ai_addrlen) ) < 0 ||
  83             (handles[1] = socket(AI->ai_family, AI->ai_socktype, 0)) < 0) {
  84         closesocket(new_socket);
  85         return -1;
  86     }
  87
  88     handle0 = *AI; // retrieve the new details returned by connect()
  89
  90     handle1.SetPort(handle1.GetPort());
  91     handle1.GetAddrInfo(AI);
  92
  93     if (connect(handles[1], AI->ai_addr, AI->ai_addrlen) < 0 ||
  94             (handles[0] = accept(new_socket, AI->ai_addr, &(AI->ai_addrlen)) ) < 0) {
  95         closesocket(handles[1]);
  96         handles[1] = -1;
  97         closesocket(new_socket);
  98         return -1;
  99     }
 100
 101     closesocket(new_socket);
 102
 103     F = &fd_table[handles[0]];
 104     F->local_addr = handle0;
 105
 106     F = &fd_table[handles[1]];
 107     F->local_addr = localhost;
 108     handle1.NtoA(F->ipaddr, MAX_IPSTRLEN);
 109     F->remote_port = handle1.GetPort();
 110
 111     return 0;
 112 }
 113
 114 int WIN32_getrusage(int who, struct rusage *usage)
 115 {
 116 #if HAVE_WIN32_PSAPI
 117
 118     if (WIN32_OS_version >= _WIN_OS_WINNT) {
 119         /* On Windows NT and later call PSAPI.DLL for process Memory */
 120         /* informations -- Guido Serassio                       */
 121         HANDLE hProcess;
 122         PROCESS_MEMORY_COUNTERS pmc;
 123         hProcess = OpenProcess(PROCESS_QUERY_INFORMATION |
 124                                PROCESS_VM_READ,
 125                                FALSE, GetCurrentProcessId());
 126         {
 127             /* Microsoft CRT doesn't have getrusage function,  */
 128             /* so we get process CPU time information from PSAPI.DLL. */
 129             FILETIME ftCreate, ftExit, ftKernel, ftUser;
 130
 131             if (GetProcessTimes(hProcess, &ftCreate, &ftExit, &ftKernel, &ftUser)) {
 132                 int64_t *ptUser = (int64_t *)&ftUser;
 133                 int64_t tUser64 = *ptUser / 10;
 134                 int64_t *ptKernel = (int64_t *)&ftKernel;
 135                 int64_t tKernel64 = *ptKernel / 10;
 136                 usage->ru_utime.tv_sec =(long)(tUser64 / 1000000);
 137                 usage->ru_stime.tv_sec =(long)(tKernel64 / 1000000);
 138                 usage->ru_utime.tv_usec =(long)(tUser64 % 1000000);
 139                 usage->ru_stime.tv_usec =(long)(tKernel64 % 1000000);
 140             } else {
 141                 CloseHandle( hProcess );
 142                 return -1;
 143             }
 144         }
 145
 146         if (GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc))) {
 147             usage->ru_maxrss=(DWORD)(pmc.WorkingSetSize / getpagesize());
 148             usage->ru_majflt=pmc.PageFaultCount;
 149         } else {
 150             CloseHandle( hProcess );
 151             return -1;
 152         }
 153
 154         CloseHandle( hProcess );
 155     }
 156
 157 #endif
 158     return 0;
 159 }
 160
 161 int
 162 Win32__WSAFDIsSet(int fd, fd_set FAR * set)
 163 {
 164     fde *F = &fd_table[fd];
 165     SOCKET s = F->win32.handle;
 166
 167     return __WSAFDIsSet(s, set);
 168 }
 169
 170 LONG CALLBACK WIN32_ExceptionHandler(EXCEPTION_POINTERS* ep)
 171 {
 172     EXCEPTION_RECORD* er;
 173
 174     er = ep->ExceptionRecord;
 175
 176     switch (er->ExceptionCode) {
 177
 178     case EXCEPTION_ACCESS_VIOLATION:
 179         raise(SIGSEGV);
 180         break;
 181
 182     case EXCEPTION_DATATYPE_MISALIGNMENT:
 183
 184     case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 185
 186     case EXCEPTION_IN_PAGE_ERROR:
 187         death(SIGBUS);
 188         break;
 189
 190     default:
 191         break;
 192     }
 193
 194     return EXCEPTION_CONTINUE_SEARCH;
 195 }
 196
 197 void WIN32_ExceptionHandlerInit()
 198 {
 199 #if !defined(_DEBUG)
 200
 201     if (Win32_Old_ExceptionHandler == NULL)
 202         Win32_Old_ExceptionHandler = SetUnhandledExceptionFilter(WIN32_ExceptionHandler);
 203
 204 #endif
 205 }
 206
 207 void WIN32_ExceptionHandlerCleanup()
 208 {
 209     if (Win32_Old_ExceptionHandler != NULL)
 210         SetUnhandledExceptionFilter(Win32_Old_ExceptionHandler);
 211 }
 212
 213 #endif /* SQUID_MSWIN_ */