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/* libanode: the Anode C reference implementation
* Copyright (C) 2009-2010 Adam Ierymenko <adam.ierymenko@gmail.com>
*
* This program 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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include "environment.h"
#ifdef WINDOWS
#include <windows.h>
#else
#include <sys/stat.h>
#include <string.h>
#endif
static char Anode_cache_base[1024] = { 0 };
const char *Anode_get_cache()
{
if (Anode_cache_base[0])
return Anode_cache_base;
#ifdef WINDOWS
#else
char tmp[1024];
char home[1024];
unsigned int i;
struct stat st;
const char *_home = getenv("HOME");
if (!_home)
return (const char *)0;
for(i=0;i<sizeof(home);++i) {
home[i] = _home[i];
if (!home[i]) {
if (i == 0)
return (const char *)0;
else if (home[i-1] == ANODE_PATH_SEPARATOR)
home[i-1] = (char)0;
break;
}
}
if (i == sizeof(home))
return (const char *)0;
#ifdef __APPLE__
snprintf(tmp,sizeof(tmp),"%s%cLibrary",home,ANODE_PATH_SEPARATOR);
tmp[sizeof(tmp)-1] = (char)0;
if (!stat(tmp,&st)) {
sprintf(tmp,"%s%cLibrary%cCaches",home,ANODE_PATH_SEPARATOR,ANODE_PATH_SEPARATOR);
if (stat(tmp,&st)) {
if (mkdir(tmp,0700))
return (const char *)0;
}
snprintf(Anode_cache_base,sizeof(Anode_cache_base),"%s%ccom.zerotier.anode",tmp,ANODE_PATH_SEPARATOR);
Anode_cache_base[sizeof(Anode_cache_base)-1] = (char)0;
if (stat(Anode_cache_base,&st)) {
if (mkdir(Anode_cache_base,0700)) {
Anode_cache_base[0] = (char)0;
return (const char *)0;
}
}
return Anode_cache_base;
}
#endif
snprintf(tmp,sizeof(tmp),"%s%c.anode",home,ANODE_PATH_SEPARATOR);
tmp[sizeof(tmp)-1] = (char)0;
if (stat(tmp,&st)) {
if (mkdir(tmp,0700)) {
Anode_cache_base[0] = (char)0;
return (const char *)0;
}
}
snprintf(Anode_cache_base,sizeof(Anode_cache_base),"%s%ccaches",tmp,ANODE_PATH_SEPARATOR);
Anode_cache_base[sizeof(Anode_cache_base)-1] = (char)0;
if (stat(Anode_cache_base,&st)) {
if (mkdir(Anode_cache_base,0700)) {
Anode_cache_base[0] = (char)0;
return (const char *)0;
}
}
return Anode_cache_base;
#endif
}
char *Anode_get_cache_sub(const char *cache_subdir,char *buf,unsigned int len)
{
struct stat st;
const char *cache_base = Anode_get_cache();
if (!len)
return (char *)0;
if (!cache_base)
return (char *)0;
snprintf(buf,len,"%s%c%s",cache_base,ANODE_PATH_SEPARATOR,cache_subdir);
buf[len-1] = (char)0;
if (stat(buf,&st)) {
if (mkdir(buf,0700))
return (char *)0;
}
return buf;
}
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