diff options
Diffstat (limited to 'common/mkdtemp.c')
-rw-r--r-- | common/mkdtemp.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/common/mkdtemp.c b/common/mkdtemp.c deleted file mode 100644 index a85b89eb4..000000000 --- a/common/mkdtemp.c +++ /dev/null @@ -1,97 +0,0 @@ -/* mkdtemp.c - libc replacement function - * Copyright (C) 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 - */ - -/* This is a replacement function for mkdtemp in case the platform - we're building on (like mine!) doesn't have it. */ - -#include <config.h> -#include <string.h> -#include <errno.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <fcntl.h> -#include <unistd.h> -#include <gcrypt.h> - -#ifdef MKDIR_TAKES_ONE_ARG -# undef mkdir -# define mkdir(a,b) mkdir(a) -#endif - -char * -mkdtemp (char *template) -{ - int attempts,idx,count=0; - unsigned char *ch; - - idx=strlen(template); - - /* Walk backwards to count all the Xes */ - while(idx>0 && template[idx-1]=='X') - { - count++; - idx--; - } - - if(count==0) - { - errno=EINVAL; - return NULL; - } - - ch=&template[idx]; - - /* Try 4 times to make the temp directory */ - for(attempts=0;attempts<4;attempts++) - { - int remaining=count; - char *marker=ch; - unsigned char *randombits; - - idx=0; - - randombits = gcry_xmalloc (4*remaining); - gcry_create_nonce (randombits, 4*remaining); - - while(remaining>1) - { - sprintf(marker,"%02X",randombits[idx++]); - marker+=2; - remaining-=2; - } - - /* Any leftover Xes? get_random_bits rounds up to full bytes, - so this is safe. */ - if(remaining>0) - sprintf(marker,"%X",randombits[idx]&0xF); - - gcry_free (randombits); - - if(mkdir(template,0700)==0) - break; - } - - if(attempts==4) - return NULL; /* keeps the errno from mkdir, whatever it is */ - - return template; -} - - |