diff options
Diffstat (limited to '')
| -rw-r--r-- | common/sysutils.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/common/sysutils.c b/common/sysutils.c deleted file mode 100644 index 6eb40b125..000000000 --- a/common/sysutils.c +++ /dev/null @@ -1,206 +0,0 @@ -/* sysutils.c - system helpers - * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. - * - * This file is part of GnuPG. - * - * GnuPG is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GnuPG is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#ifdef HAVE_STAT -#include <sys/stat.h> -#endif -#if defined(__linux__) && defined(__alpha__) && __GLIBC__ < 2 - #include <asm/sysinfo.h> - #include <asm/unistd.h> -#endif -#ifdef HAVE_SETRLIMIT - #include <time.h> - #include <sys/time.h> - #include <sys/resource.h> -#endif -#include "util.h" -#include "i18n.h" - -#include "sysutils.h" - -#if defined(__linux__) && defined(__alpha__) && __GLIBC__ < 2 -#warning using trap_unaligned -static int -setsysinfo(unsigned long op, void *buffer, unsigned long size, - int *start, void *arg, unsigned long flag) -{ - return syscall(__NR_osf_setsysinfo, op, buffer, size, start, arg, flag); -} - -void -trap_unaligned(void) -{ - unsigned int buf[2]; - - buf[0] = SSIN_UACPROC; - buf[1] = UAC_SIGBUS | UAC_NOPRINT; - setsysinfo(SSI_NVPAIRS, buf, 1, 0, 0, 0); -} -#else -void -trap_unaligned(void) -{ /* dummy */ -} -#endif - - -int -disable_core_dumps (void) -{ - #ifdef HAVE_DOSISH_SYSTEM - return 0; - #else - #ifdef HAVE_SETRLIMIT - struct rlimit limit; - - limit.rlim_cur = 0; - limit.rlim_max = 0; - if( !setrlimit( RLIMIT_CORE, &limit ) ) - return 0; - if( errno != EINVAL && errno != ENOSYS ) - log_fatal (_("can't disable core dumps: %s\n"), strerror(errno) ); - #endif - return 1; - #endif -} - - - -/* Return a string which is used as a kind of process ID */ -const byte * -get_session_marker( size_t *rlen ) -{ - static byte marker[SIZEOF_UNSIGNED_LONG*2]; - static int initialized; - - if ( !initialized ) { - volatile ulong aa, bb; /* we really want the uninitialized value */ - ulong a, b; - - initialized = 1; - /* also this marker is guessable it is not easy to use this - * for a faked control packet because an attacker does not - * have enough control about the time the verification does - * take place. Of course, we can add just more random but - * than we need the random generator even for verification - * tasks - which does not make sense. */ - a = aa ^ (ulong)getpid(); - b = bb ^ (ulong)time(NULL); - memcpy( marker, &a, SIZEOF_UNSIGNED_LONG ); - memcpy( marker+SIZEOF_UNSIGNED_LONG, &b, SIZEOF_UNSIGNED_LONG ); - } - *rlen = sizeof(marker); - return marker; -} - - -#if 0 /* not yet needed */ -int -check_permissions(const char *path,int extension,int checkonly) -{ -#if defined(HAVE_STAT) && !defined(HAVE_DOSISH_SYSTEM) - char *tmppath; - struct stat statbuf; - int ret=1; - int isdir=0; - - if(opt.no_perm_warn) - return 0; - - if(extension && path[0]!=DIRSEP_C) - { - if(strchr(path,DIRSEP_C)) - tmppath=make_filename(path,NULL); - else - tmppath=make_filename(GNUPG_LIBDIR,path,NULL); - } - else - tmppath=m_strdup(path); - - /* It's okay if the file doesn't exist */ - if(stat(tmppath,&statbuf)!=0) - { - ret=0; - goto end; - } - - isdir=S_ISDIR(statbuf.st_mode); - - /* Per-user files must be owned by the user. Extensions must be - owned by the user or root. */ - if((!extension && statbuf.st_uid != getuid()) || - (extension && statbuf.st_uid!=0 && statbuf.st_uid!=getuid())) - { - if(!checkonly) - log_info(_("Warning: unsafe ownership on %s \"%s\"\n"), - isdir?"directory":extension?"extension":"file",path); - goto end; - } - - /* This works for both directories and files - basically, we don't - care what the owner permissions are, so long as the group and - other permissions are 0 for per-user files, and non-writable for - extensions. */ - if((extension && (statbuf.st_mode & (S_IWGRP|S_IWOTH)) !=0) || - (!extension && (statbuf.st_mode & (S_IRWXG|S_IRWXO)) != 0)) - { - char *dir; - - /* However, if the directory the directory/file is in is owned - by the user and is 700, then this is not a problem. - Theoretically, we could walk this test up to the root - directory /, but for the sake of sanity, I'm stopping at one - level down. */ - - dir= make_dirname (tmppath); - if(stat(dir,&statbuf)==0 && statbuf.st_uid==getuid() && - S_ISDIR(statbuf.st_mode) && (statbuf.st_mode & (S_IRWXG|S_IRWXO))==0) - { - xfree (dir); - ret=0; - goto end; - } - - m_free(dir); - - if(!checkonly) - log_info(_("Warning: unsafe permissions on %s \"%s\"\n"), - isdir?"directory":extension?"extension":"file",path); - goto end; - } - - ret=0; - - end: - m_free(tmppath); - - return ret; - -#endif /* HAVE_STAT && !HAVE_DOSISH_SYSTEM */ - - return 0; -} -#endif |