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elmex |
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/* |
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* static char *rcsid_porting_c = |
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* "$Id$"; |
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*/ |
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/* |
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CrossFire, A Multiplayer game for X-windows |
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Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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The authors can be reached via e-mail at crossfire-devel@real-time.com |
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*/ |
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/* This file contains various functions that are not really unique for |
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* crossfire, but rather provides what should be standard functions |
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* for systems that do not have them. In this way, most of the |
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* nasty system dependent stuff is contained here, with the program |
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* calling these functions. |
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*/ |
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#ifdef WIN32 /* ---win32 exclude/include headers */ |
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#include "process.h" |
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#define pid_t int /* we include it non global, because there is a redefinition in python.h */ |
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#else |
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#include <ctype.h> |
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#include <sys/stat.h> |
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#include <sys/wait.h> |
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#include <sys/param.h> |
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#include <stdio.h> |
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/* Need to pull in the HAVE_... values somehow */ |
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/* win32 reminder: always put this in a ifndef win32 block */ |
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#include <autoconf.h> |
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#endif |
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#ifdef HAVE_STDLIB_H |
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#include <stdlib.h> |
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#endif |
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#ifdef HAVE_UNISTD_H |
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#include <unistd.h> |
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#endif |
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#include <stdarg.h> |
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/* Has to be after above includes so we don't redefine some values */ |
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#include "global.h" |
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static unsigned int curtmp = 0; |
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/* This is a list of the suffix, uncompress and compress functions. Thus, |
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* if you have some other compress program you want to use, the only thing |
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* that needs to be done is to extended this. |
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* The first entry must be NULL - this is what is used for non |
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* compressed files. |
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*/ |
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EXTERN char *uncomp[NROF_COMPRESS_METHODS][3] = { |
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{NULL, NULL, NULL}, |
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{".Z", UNCOMPRESS, COMPRESS}, |
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{".gz", GUNZIP, GZIP}, |
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{".bz2", BUNZIP, BZIP} |
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}; |
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/***************************************************************************** |
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* File related functions |
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****************************************************************************/ |
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/* |
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* A replacement for the tempnam() function since it's not defined |
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* at some unix variants. |
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*/ |
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char *tempnam_local(const char *dir, const char *pfx) |
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{ |
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char *name; |
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pid_t pid=getpid(); |
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/* HURD does not have a hard limit, but we do */ |
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#ifndef MAXPATHLEN |
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#define MAXPATHLEN 4096 |
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#endif |
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if (!(name = (char *) malloc(MAXPATHLEN))) |
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return(NULL); |
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if (!pfx) |
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pfx = "cftmp."; |
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/* This is a pretty simple method - put the pid as a hex digit and |
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* just keep incrementing the last digit. Check to see if the file |
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* already exists - if so, we'll just keep looking - eventually we should |
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* find one that is free. |
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*/ |
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if (dir!=NULL) { |
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do { |
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#ifdef HAVE_SNPRINTF |
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(void)snprintf(name, MAXPATHLEN, "%s/%s%hx.%d", dir, pfx, pid, curtmp); |
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#else |
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(void)sprintf(name,"%s/%s%hx%d", dir, pfx, pid, curtmp); |
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#endif |
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curtmp++; |
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} while (access(name, F_OK)!=-1); |
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return(name); |
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} |
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return(NULL); |
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} |
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/* This function removes everything in the directory. */ |
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void remove_directory(const char *path) |
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{ |
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DIR *dirp; |
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char buf[MAX_BUF]; |
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struct stat statbuf; |
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int status; |
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if ((dirp=opendir(path))!=NULL) { |
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struct dirent *de; |
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for (de=readdir(dirp); de; de = readdir(dirp)) { |
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/* Don't remove '.' or '..' In theory we should do a better |
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* check for .., but the directories we are removing are fairly |
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* limited and should not have dot files in them. |
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*/ |
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if (de->d_name[0] == '.') continue; |
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/* Linux actually has a type field in the dirent structure, |
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* but that is not portable - stat should be portable |
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*/ |
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status=stat(de->d_name, &statbuf); |
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if ((status!=-1) && (S_ISDIR(statbuf.st_mode))) { |
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sprintf(buf,"%s/%s", path, de->d_name); |
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remove_directory(buf); |
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continue; |
153 |
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} |
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sprintf(buf,"%s/%s", path, de->d_name); |
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if (unlink(buf)) { |
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LOG(llevError,"Unable to remove directory %s\n", path); |
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} |
158 |
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} |
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closedir(dirp); |
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} |
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if (rmdir(path)) { |
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LOG(llevError,"Unable to remove directory %s\n", path); |
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} |
164 |
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} |
165 |
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166 |
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#if defined(sgi) |
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168 |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
171 |
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172 |
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#define popen fixed_popen |
173 |
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174 |
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FILE *popen_local(const char *command, const char *type) |
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{ |
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int fd[2]; |
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int pd; |
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FILE *ret; |
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if (!strcmp(type,"r")) |
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{ |
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pd=STDOUT_FILENO; |
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} |
183 |
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else if (!strcmp(type,"w")) |
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{ |
185 |
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pd=STDIN_FILENO; |
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} |
187 |
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else |
188 |
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{ |
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return NULL; |
190 |
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} |
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if (pipe(fd)!=-1) |
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{ |
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switch (fork()) |
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{ |
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case -1: |
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close(fd[0]); |
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close(fd[1]); |
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break; |
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case 0: |
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close(fd[0]); |
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if ((fd[1]==pd)||(dup2(fd[1],pd)==pd)) |
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{ |
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if (fd[1]!=pd) |
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{ |
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close(fd[1]); |
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} |
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execl("/bin/sh","sh","-c",command,NULL); |
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close(pd); |
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} |
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exit(1); |
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break; |
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default: |
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close(fd[1]); |
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if (ret=fdopen(fd[0],type)) |
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{ |
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return ret; |
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} |
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close(fd[0]); |
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break; |
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} |
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} |
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return NULL; |
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} |
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#endif /* defined(sgi) */ |
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227 |
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/***************************************************************************** |
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* String related function |
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****************************************************************************/ |
231 |
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232 |
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233 |
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234 |
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/* |
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* A replacement of strdup(), since it's not defined at some |
236 |
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* unix variants. |
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*/ |
238 |
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char *strdup_local(const char *str) { |
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char *c=(char *)malloc(sizeof(char)*(strlen(str)+1)); |
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strcpy(c,str); |
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return c; |
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} |
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244 |
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245 |
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#define DIGIT(x) (isdigit(x) ? (x) - '0' : \ |
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islower (x) ? (x) + 10 - 'a' : (x) + 10 - 'A') |
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#define MBASE ('z' - 'a' + 1 + 10) |
248 |
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249 |
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/* This seems to be lacking on some system */ |
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#if !defined(HAVE_STRNCASECMP) |
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int strncasecmp(const char *s1, const char *s2, int n) |
252 |
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{ |
253 |
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register int c1, c2; |
254 |
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255 |
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while (*s1 && *s2 && n) { |
256 |
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c1 = tolower(*s1); |
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c2 = tolower(*s2); |
258 |
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if (c1 != c2) |
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return (c1 - c2); |
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s1++; |
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s2++; |
262 |
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n--; |
263 |
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} |
264 |
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if (!n) |
265 |
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return(0); |
266 |
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return (int) (*s1 - *s2); |
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} |
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#endif |
269 |
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270 |
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#if !defined(HAVE_STRCASECMP) |
271 |
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int strcasecmp(const char *s1, const char*s2) |
272 |
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{ |
273 |
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register int c1, c2; |
274 |
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275 |
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while (*s1 && *s2) { |
276 |
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c1 = tolower(*s1); |
277 |
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c2 = tolower(*s2); |
278 |
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if (c1 != c2) |
279 |
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return (c1 - c2); |
280 |
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s1++; |
281 |
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s2++; |
282 |
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} |
283 |
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if (*s1=='\0' && *s2=='\0') |
284 |
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return 0; |
285 |
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return (int) (*s1 - *s2); |
286 |
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} |
287 |
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#endif |
288 |
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289 |
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char *strcasestr_local(const char *s, const char *find) |
290 |
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{ |
291 |
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char c, sc; |
292 |
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size_t len; |
293 |
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294 |
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if ((c = *find++) != 0) { |
295 |
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c = tolower(c); |
296 |
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len = strlen(find); |
297 |
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do { |
298 |
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do { |
299 |
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if ((sc = *s++) == 0) |
300 |
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return NULL; |
301 |
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} while (tolower(sc) != c); |
302 |
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} while (strncasecmp(s, find, len) != 0); |
303 |
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s--; |
304 |
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} |
305 |
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return (char *)s; |
306 |
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} |
307 |
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308 |
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#if !defined(HAVE_SNPRINTF) |
309 |
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310 |
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int snprintf(char *dest, int max, const char *format, ...) |
311 |
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{ |
312 |
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va_list var; |
313 |
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int ret; |
314 |
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315 |
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va_start(var, format); |
316 |
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ret = vsprintf(dest, format, var); |
317 |
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va_end(var); |
318 |
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if (ret > max) abort(); |
319 |
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320 |
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return ret; |
321 |
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} |
322 |
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#endif |
323 |
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324 |
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|
325 |
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/* This takes an err number and returns a string with a description of |
326 |
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* the error. |
327 |
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*/ |
328 |
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char *strerror_local(int errnum) |
329 |
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{ |
330 |
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#if defined(HAVE_STRERROR) |
331 |
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return(strerror(errnum)); |
332 |
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#else |
333 |
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return("strerror_local not implemented"); |
334 |
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#endif |
335 |
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} |
336 |
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|
337 |
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/* |
338 |
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* Based on (n+1)^2 = n^2 + 2n + 1 |
339 |
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* given that 1^2 = 1, then |
340 |
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* 2^2 = 1 + (2 + 1) = 1 + 3 = 4 |
341 |
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* 3^2 = 4 + (4 + 1) = 4 + 5 = 1 + 3 + 5 = 9 |
342 |
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* 4^2 = 9 + (6 + 1) = 9 + 7 = 1 + 3 + 5 + 7 = 16 |
343 |
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* ... |
344 |
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* In other words, a square number can be express as the sum of the |
345 |
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* series n^2 = 1 + 3 + ... + (2n-1) |
346 |
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*/ |
347 |
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int |
348 |
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isqrt(int n) |
349 |
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{ |
350 |
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int result, sum, prev; |
351 |
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result = 0; |
352 |
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prev = sum = 1; |
353 |
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while (sum <= n) { |
354 |
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prev += 2; |
355 |
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sum += prev; |
356 |
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++result; |
357 |
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} |
358 |
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return result; |
359 |
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} |
360 |
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|
361 |
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|
362 |
|
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/* |
363 |
|
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* returns a char-pointer to a static array, in which a representation |
364 |
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* of the decimal number given will be stored. |
365 |
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*/ |
366 |
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|
367 |
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char *ltostr10(signed long n) { |
368 |
|
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static char buf[12]; /* maximum size is n=-2 billion, i.e. 11 characters+1 |
369 |
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character for the trailing nul character */ |
370 |
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snprintf(buf, sizeof(buf), "%ld", n); |
371 |
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return buf; |
372 |
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} |
373 |
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char *doubletostr10(double v){ |
374 |
|
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static char tbuf[200]; |
375 |
|
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sprintf(tbuf,"%f",v); |
376 |
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return tbuf; |
377 |
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} |
378 |
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|
379 |
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/* |
380 |
|
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* A fast routine which appends the name and decimal number specified |
381 |
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|
* to the given buffer. |
382 |
|
|
* Could be faster, though, if the strcat()s at the end could be changed |
383 |
|
|
* into alternate strcat which returned a pointer to the _end_, not the |
384 |
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* start! |
385 |
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* |
386 |
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|
* Hey good news, it IS faster now, according to changes in get_ob_diff |
387 |
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* Completly redone prototype and made define in loader.l. See changes there. |
388 |
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* Didn't touch those for speed reason (don't use them anymore) . |
389 |
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* Tchize |
390 |
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*/ |
391 |
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|
392 |
|
|
void save_long(char *buf, char *name, long n) { |
393 |
|
|
char buf2[MAX_BUF]; |
394 |
|
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strcpy(buf2,name); |
395 |
|
|
strcat(buf2," "); |
396 |
|
|
strcat(buf2,ltostr10(n)); |
397 |
|
|
strcat(buf2,"\n"); |
398 |
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|
strcat(buf,buf2); |
399 |
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} |
400 |
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|
401 |
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|
402 |
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|
403 |
|
|
void save_long_long(char *buf, char *name, sint64 n) { |
404 |
|
|
char buf2[MAX_BUF]; |
405 |
|
|
|
406 |
|
|
#ifndef WIN32 |
407 |
|
|
sprintf(buf2,"%s %lld\n", name, n); |
408 |
|
|
#else |
409 |
|
|
sprintf(buf2,"%s %I64d\n", name, n); |
410 |
|
|
#endif |
411 |
|
|
strcat(buf,buf2); |
412 |
|
|
} |
413 |
|
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|
414 |
|
|
/** |
415 |
|
|
* Open and possibly uncompress a file. |
416 |
|
|
* |
417 |
|
|
* @param ext the extension if the file is compressed. |
418 |
|
|
* |
419 |
|
|
* @param uncompressor the command to uncompress the file if the file is |
420 |
|
|
* compressed. |
421 |
|
|
* |
422 |
|
|
* @param name the base file name without compression extension |
423 |
|
|
* |
424 |
|
|
* @param flag only used for compressed files: if set, uncompress and open the |
425 |
|
|
* file; if unset, uncompress the file via pipe |
426 |
|
|
* |
427 |
|
|
* @param *compressed set to zero if the file was uncompressed |
428 |
|
|
*/ |
429 |
|
|
static FILE *open_and_uncompress_file(const char *ext, const char *uncompressor, const char *name, int flag, int *compressed) { |
430 |
|
|
struct stat st; |
431 |
|
|
char buf[MAX_BUF]; |
432 |
|
|
char buf2[MAX_BUF]; |
433 |
|
|
int ret; |
434 |
|
|
|
435 |
|
|
if (ext == NULL) { |
436 |
|
|
ext = ""; |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
if (strlen(name)+strlen(ext) >= sizeof(buf)) { |
440 |
|
|
errno = ENAMETOOLONG; /* File name too long */ |
441 |
|
|
return NULL; |
442 |
|
|
} |
443 |
|
|
sprintf(buf, "%s%s", name, ext); |
444 |
|
|
|
445 |
|
|
if (stat(buf, &st) != 0) { |
446 |
|
|
return NULL; |
447 |
|
|
} |
448 |
|
|
|
449 |
|
|
if (!S_ISREG(st.st_mode)) { |
450 |
|
|
errno = EISDIR; /* Not a regular file */ |
451 |
|
|
return NULL; |
452 |
|
|
} |
453 |
|
|
|
454 |
|
|
if (uncompressor == NULL) { |
455 |
|
|
/* open without uncompression */ |
456 |
|
|
|
457 |
|
|
return fopen(buf, "r"); |
458 |
|
|
} |
459 |
|
|
|
460 |
|
|
/* The file name buf (and its substring name) is passed as an argument to a |
461 |
|
|
* shell command, therefore check for characters that could confuse the |
462 |
|
|
* shell. |
463 |
|
|
*/ |
464 |
|
|
if (strpbrk(buf, "'\\\r\n") != NULL) { |
465 |
|
|
errno = ENOENT; /* Pretend the file does not exist */ |
466 |
|
|
return NULL; |
467 |
|
|
} |
468 |
|
|
|
469 |
|
|
if (!flag) { |
470 |
|
|
/* uncompress via pipe */ |
471 |
|
|
|
472 |
|
|
if (strlen(uncompressor)+4+strlen(buf)+1 >= sizeof(buf2)) { |
473 |
|
|
errno = ENAMETOOLONG; /* File name too long */ |
474 |
|
|
return NULL; |
475 |
|
|
} |
476 |
|
|
sprintf(buf2, "%s < '%s'", uncompressor, buf); |
477 |
|
|
|
478 |
|
|
return popen(buf2, "r"); |
479 |
|
|
} |
480 |
|
|
|
481 |
|
|
/* remove compression from file, then open file */ |
482 |
|
|
|
483 |
|
|
if (stat(name, &st) == 0 && !S_ISREG(st.st_mode)) { |
484 |
|
|
errno = EISDIR; |
485 |
|
|
return NULL; |
486 |
|
|
} |
487 |
|
|
|
488 |
|
|
if (strlen(uncompressor)+4+strlen(buf)+5+strlen(name)+1 >= sizeof(buf2)) { |
489 |
|
|
errno = ENAMETOOLONG; /* File name too long */ |
490 |
|
|
return NULL; |
491 |
|
|
} |
492 |
|
|
sprintf(buf2, "%s < '%s' > '%s'", uncompressor, buf, name); |
493 |
|
|
|
494 |
|
|
ret = system(buf2); |
495 |
|
|
if (!WIFEXITED(ret) || WEXITSTATUS(ret) != 0) { |
496 |
|
|
LOG(llevError, "system(%s) returned %d\n", buf2, ret); |
497 |
|
|
errno = ENOENT; |
498 |
|
|
return NULL; |
499 |
|
|
} |
500 |
|
|
|
501 |
|
|
unlink(buf); /* Delete the original */ |
502 |
|
|
*compressed = 0; /* Change to "uncompressed file" */ |
503 |
|
|
chmod(name, st.st_mode); /* Copy access mode from compressed file */ |
504 |
|
|
|
505 |
|
|
return fopen(name, "r"); |
506 |
|
|
} |
507 |
|
|
|
508 |
|
|
/** |
509 |
|
|
* open_and_uncompress() first searches for the original filename. If it exist, |
510 |
|
|
* then it opens it and returns the file-pointer. |
511 |
|
|
* |
512 |
|
|
* If not, it does two things depending on the flag. If the flag is set, it |
513 |
|
|
* tries to create the original file by appending a compression suffix to name |
514 |
|
|
* and uncompressing it. If the flag is not set, it creates a pipe that is used |
515 |
|
|
* for reading the file (NOTE - you can not use fseek on pipes). |
516 |
|
|
* |
517 |
|
|
* The compressed pointer is set to nonzero if the file is compressed (and |
518 |
|
|
* thus, fp is actually a pipe.) It returns 0 if it is a normal file. |
519 |
|
|
*/ |
520 |
|
|
FILE *open_and_uncompress(const char *name, int flag, int *compressed) { |
521 |
|
|
size_t i; |
522 |
|
|
FILE *fp; |
523 |
|
|
|
524 |
|
|
for (i = 0; i < NROF_COMPRESS_METHODS; i++) { |
525 |
|
|
*compressed = i; |
526 |
|
|
fp = open_and_uncompress_file(uncomp[i][0], uncomp[i][1], name, flag, compressed); |
527 |
|
|
if (fp != NULL) { |
528 |
|
|
return fp; |
529 |
|
|
} |
530 |
|
|
} |
531 |
|
|
|
532 |
|
|
errno = ENOENT; |
533 |
|
|
return NULL; |
534 |
|
|
} |
535 |
|
|
|
536 |
|
|
/* |
537 |
|
|
* See open_and_uncompress(). |
538 |
|
|
*/ |
539 |
|
|
|
540 |
|
|
void close_and_delete(FILE *fp, int compressed) { |
541 |
|
|
if (compressed) |
542 |
|
|
pclose(fp); |
543 |
|
|
else |
544 |
|
|
fclose(fp); |
545 |
|
|
} |
546 |
|
|
|
547 |
|
|
/* |
548 |
|
|
* If any directories in the given path doesn't exist, they are created. |
549 |
|
|
*/ |
550 |
|
|
|
551 |
|
|
void make_path_to_file (char *filename) |
552 |
|
|
{ |
553 |
|
|
char buf[MAX_BUF], *cp = buf; |
554 |
|
|
struct stat statbuf; |
555 |
|
|
|
556 |
|
|
if (!filename || !*filename) |
557 |
|
|
return; |
558 |
|
|
strcpy (buf, filename); |
559 |
|
|
|
560 |
|
|
while ((cp = strchr (cp + 1, (int) '/'))) { |
561 |
|
|
*cp = '\0'; |
562 |
|
|
if (stat(buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) { |
563 |
|
|
if (mkdir (buf, SAVE_DIR_MODE)) { |
564 |
|
|
LOG(llevError, "Cannot mkdir %s: %s\n", buf, strerror_local(errno)); |
565 |
|
|
return; |
566 |
|
|
} |
567 |
|
|
} |
568 |
|
|
*cp = '/'; |
569 |
|
|
} |
570 |
|
|
} |
571 |
|
|
|