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/*
** linux.c Linux/Unix specific calls (they do nothing in other platforms)
**
** Part of willus.com general purpose C code library.
**
** Copyright (C) 2018 http://willus.com
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program 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 Affero General Public License for more details.
**
** You should have received a copy of the GNU Affero General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
**
*/
#include "willus.h"
#if (defined(LINUX) || defined(UNIXPURE))
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <ctype.h>
#include <time.h>
#include <unistd.h>
/* 12-6-18: Apparently sys/termios.h no longer needed to compile. */
/*
#include <sys/termios.h>
*/
#include <sys/wait.h>
#include <sys/types.h>
#include <signal.h>
static int nextdir(char *dir,char *path,int *index);
int linux_which(char *exactname,char *exename)
{
char *p;
static char basename[MAXFILENAMELEN];
static char path[4096];
static char dir[4096];
static char file[4096];
int index,j;
int used[16];
static char *stddirs[] = {"/usr/sbin",
"/sbin",
"/bin",
"/usr/bin",
"/usr/local/bin",
"/usr/kerberos/sbin",
"/usr/kerberos/bin",
"/usr/X11R6/bin",
".",
""};
strcpy(basename,exename);
if (basename[0]=='\"' && basename[strlen(basename)-1]=='\"')
{
basename[strlen(basename)-1]='\0';
memmove(&basename[1],basename,strlen(basename));
}
p=getenv("PATH");
if (p==NULL)
path[0]='\0';
else
strcpy(path,p);
/* If absolute path, check straight away */
if (basename[0]=='/')
{
if (wfile_status(basename)==1)
{
strcpy(exactname,basename);
return(1);
}
else
return(0);
}
index=0;
for (j=0;stddirs[j][0]!='\0';j++)
used[j]=0;
while (nextdir(dir,path,&index))
{
for (j=0;stddirs[j][0]!='\0';j++)
if (!strcmp(stddirs[j],dir))
used[j]=1;
wfile_fullname(file,dir,basename);
if (wfile_status(file)==1)
{
strcpy(exactname,file);
return(8);
}
}
for (j=0;stddirs[j][0]!='\0';j++)
{
if (used[j])
continue;
wfile_fullname(file,stddirs[j],basename);
if (wfile_status(file)==1)
{
strcpy(exactname,file);
return(9);
}
}
return(0);
}
int linux_most_recent_in_path(char *exactname,char *wildcard)
{
char *p;
static char path[4096];
static char dir[1024];
static char file[1024];
char tfile[512];
int index;
FILELIST *fl,_fl;
fl=&_fl;
filelist_init(fl);
p=getenv("PATH");
if (p==NULL)
path[0]='\0';
else
strcpy(path,p);
index=0;
exactname[0]='\0';
while (nextdir(dir,path,&index))
{
wfile_fullname(file,dir,wildcard);
filelist_fill_from_disk_1(fl,file,0,0);
if (fl->n<=0)
{
filelist_free(fl);
continue;
}
filelist_sort_by_date(fl);
wfile_fullname(tfile,fl->dir,fl->entry[fl->n-1].name);
filelist_free(fl);
if (exactname[0]=='\0' || wfile_newer(tfile,exactname)>0)
strcpy(exactname,tfile);
}
return(exactname[0]!='\0');
}
static int nextdir(char *dir,char *path,int *index)
{
int i,j;
i=(*index);
for (;path[i]==';' || path[i]==':' || path[i]==' ' || path[i]=='\t';i++);
if (path[i]=='\0')
{
(*index)=i;
return(0);
}
for (j=0;path[i]!=';' && path[i]!=':' && path[i]!='\0';i++)
dir[j++]=path[i];
(*index)=i;
dir[j]='\0';
clean_line(dir);
if (dir[0]=='\"' && dir[strlen(dir)-1]=='\"')
{
memmove(dir,&dir[1],strlen(dir));
dir[strlen(dir)-1]='\0';
clean_line(dir);
}
return(strlen(dir)>0);
}
#endif // LINUX
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