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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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