src/win32.cc

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