apache/os/win32/util_win32.c

   1 /* Licensed to the Apache Software Foundation (ASF) under one or more
   2  * contributor license agreements.  See the NOTICE file distributed with
   3  * this work for additional information regarding copyright ownership.
   4  * The ASF licenses this file to You under the Apache License, Version 2.0
   5  * (the "License"); you may not use this file except in compliance with
   6  * the License.  You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include "apr_strings.h"
  18 #include "arch/win32/apr_arch_file_io.h"
  19 #include "arch/win32/apr_arch_misc.h"
  20
  21 #include "httpd.h"
  22 #include "http_log.h"
  23
  24 #include <stdarg.h>
  25 #include <time.h>
  26 #include <stdlib.h>
  27
  28
  29 AP_DECLARE(apr_status_t) ap_os_proc_filepath(char **binpath, apr_pool_t *p)
  30 {
  31     apr_wchar_t wbinpath[APR_PATH_MAX];
  32
  33 #if APR_HAS_UNICODE_FS
  34     IF_WIN_OS_IS_UNICODE
  35     {
  36         apr_size_t binlen;
  37         apr_size_t wbinlen;
  38         apr_status_t rv;
  39         if (!GetModuleFileNameW(NULL, wbinpath, sizeof(wbinpath)
  40                                               / sizeof(apr_wchar_t))) {
  41             return apr_get_os_error();
  42         }
  43         wbinlen = wcslen(wbinpath) + 1;
  44         binlen = (wbinlen - 1) * 3 + 1;
  45         *binpath = apr_palloc(p, binlen);
  46         rv = apr_conv_ucs2_to_utf8(wbinpath, &wbinlen, *binpath, &binlen);
  47         if (rv != APR_SUCCESS)
  48             return rv;
  49         else if (wbinlen)
  50             return APR_ENAMETOOLONG;
  51     }
  52 #endif /* APR_HAS_UNICODE_FS */
  53 #if APR_HAS_ANSI_FS
  54     ELSE_WIN_OS_IS_ANSI
  55     {
  56         /* share the same scratch buffer */
  57         char *pathbuf = (char*) wbinpath;
  58         if (!GetModuleFileName(NULL, pathbuf, sizeof(wbinpath))) {
  59             return apr_get_os_error();
  60         }
  61         *binpath = apr_pstrdup(p, pathbuf);
  62     }
  63 #endif
  64     return APR_SUCCESS;
  65 }
  66
  67
  68 AP_DECLARE(apr_status_t) ap_os_create_privileged_process(
  69     const request_rec *r,
  70     apr_proc_t *newproc, const char *progname,
  71     const char * const *args,
  72     const char * const *env,
  73     apr_procattr_t *attr, apr_pool_t *p)
  74 {
  75     return apr_proc_create(newproc, progname, args, env, attr, p);
  76 }
  77
  78
  79 /* This code is stolen from misc/win32/misc.c and apr_private.h
  80  * This helper code resolves late bound entry points
  81  * missing from one or more releases of the Win32 API...
  82  * but it sure would be nice if we didn't duplicate this code
  83  * from the APR ;-)
  84  */
  85 static const char* const lateDllName[DLL_defined] = {
  86     "kernel32", "advapi32", "mswsock",  "ws2_32"  };
  87 static HMODULE lateDllHandle[DLL_defined] = {
  88     NULL,       NULL,       NULL,       NULL      };
  89
  90
  91 FARPROC ap_load_dll_func(ap_dlltoken_e fnLib, char* fnName, int ordinal)
  92 {
  93     if (!lateDllHandle[fnLib]) {
  94         lateDllHandle[fnLib] = LoadLibrary(lateDllName[fnLib]);
  95         if (!lateDllHandle[fnLib])
  96             return NULL;
  97     }
  98     if (ordinal)
  99         return GetProcAddress(lateDllHandle[fnLib], (char *) ordinal);
 100     else
 101         return GetProcAddress(lateDllHandle[fnLib], fnName);
 102 }
 103
 104
 105 /* To share the semaphores with other processes, we need a NULL ACL
 106  * Code from MS KB Q106387
 107  */
 108 PSECURITY_ATTRIBUTES GetNullACL()
 109 {
 110     PSECURITY_DESCRIPTOR pSD;
 111     PSECURITY_ATTRIBUTES sa;
 112
 113     sa  = (PSECURITY_ATTRIBUTES) LocalAlloc(LPTR, sizeof(SECURITY_ATTRIBUTES));
 114     sa->nLength = sizeof(sizeof(SECURITY_ATTRIBUTES));
 115
 116     pSD = (PSECURITY_DESCRIPTOR) LocalAlloc(LPTR, SECURITY_DESCRIPTOR_MIN_LENGTH);
 117     sa->lpSecurityDescriptor = pSD;
 118
 119     if (pSD == NULL || sa == NULL) {
 120         return NULL;
 121     }
 122     apr_set_os_error(0);
 123     if (!InitializeSecurityDescriptor(pSD, SECURITY_DESCRIPTOR_REVISION)
 124         || apr_get_os_error()) {
 125         LocalFree( pSD );
 126         LocalFree( sa );
 127         return NULL;
 128     }
 129     if (!SetSecurityDescriptorDacl(pSD, TRUE, (PACL) NULL, FALSE)
 130         || apr_get_os_error()) {
 131         LocalFree( pSD );
 132         LocalFree( sa );
 133         return NULL;
 134     }
 135
 136     sa->bInheritHandle = FALSE;
 137     return sa;
 138 }
 139
 140
 141 void CleanNullACL(void *sa)
 142 {
 143     if (sa) {
 144         LocalFree(((PSECURITY_ATTRIBUTES)sa)->lpSecurityDescriptor);
 145         LocalFree(sa);
 146     }
 147 }