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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "tool_setup.h"
#ifdef HAVE_PWD_H
# undef __NO_NET_API /* required for building for AmigaOS */
# include <pwd.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <curl/mprintf.h>
#include "tool_homedir.h"
#include "memdebug.h" /* keep this as LAST include */
static char *GetEnv(const char *variable)
{
char *dupe, *env;
env = curl_getenv(variable);
if(!env)
return NULL;
dupe = strdup(env);
curl_free(env);
return dupe;
}
/* return the home directory of the current user as an allocated string */
/*
* The original logic found a home dir to use (by checking a range of
* environment variables and last using getpwuid) and returned that for the
* parent to use.
*
* With the XDG_CONFIG_HOME support (added much later than the other), this
* variable is treated differently in order to not ruin existing installations
* even if this environment variable is set. If this variable is set, and a
* file name is set to check, then only if that file name exists in that
* directory will it be returned as a "home directory".
*
* 1. use CURL_HOME if set
* 2. use XDG_CONFIG_HOME if set and fname is present
* 3. use HOME if set
* 4. Non-windows: use getpwuid
* 5. Windows: use APPDATA if set
* 6. Windows: use "USERPROFILE\Application Data" is set
*/
char *homedir(const char *fname)
{
char *home;
home = GetEnv("CURL_HOME");
if(home)
return home;
if(fname) {
home = GetEnv("XDG_CONFIG_HOME");
if(home) {
char *c = curl_maprintf("%s" DIR_CHAR "%s", home, fname);
if(c) {
int fd = open(c, O_RDONLY);
curl_free(c);
if(fd >= 0) {
close(fd);
return home;
}
}
free(home);
}
}
home = GetEnv("HOME");
if(home)
return home;
#if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
{
struct passwd *pw = getpwuid(geteuid());
if(pw) {
home = pw->pw_dir;
if(home && home[0])
home = strdup(home);
else
home = NULL;
}
}
#endif /* PWD-stuff */
#ifdef WIN32
home = GetEnv("APPDATA");
if(!home) {
char *env = GetEnv("USERPROFILE");
if(env) {
char *path = curl_maprintf("%s\\Application Data", env);
if(path) {
home = strdup(path);
curl_free(path);
}
free(env);
}
}
#endif /* WIN32 */
return home;
}
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