158 lines
4.3 KiB
C
158 lines
4.3 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 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.
|
|
*
|
|
* SPDX-License-Identifier: curl
|
|
*
|
|
***************************************************************************/
|
|
#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_findfile.h"
|
|
|
|
#include "memdebug.h" /* keep this as LAST include */
|
|
|
|
struct finder {
|
|
const char *env;
|
|
const char *append;
|
|
bool withoutdot;
|
|
};
|
|
|
|
/* The order of the variables below is important, as the index number is used
|
|
in the findfile() function */
|
|
static const struct finder conf_list[] = {
|
|
{ "CURL_HOME", NULL, FALSE },
|
|
{ "XDG_CONFIG_HOME", NULL, FALSE }, /* index == 1, used in the code */
|
|
{ "HOME", NULL, FALSE },
|
|
#ifdef _WIN32
|
|
{ "USERPROFILE", NULL, FALSE },
|
|
{ "APPDATA", NULL, FALSE },
|
|
{ "USERPROFILE", "\\Application Data", FALSE},
|
|
#endif
|
|
/* these are for .curlrc if XDG_CONFIG_HOME is not defined */
|
|
{ "CURL_HOME", "/.config", TRUE },
|
|
{ "HOME", "/.config", TRUE },
|
|
|
|
{ NULL, NULL, FALSE }
|
|
};
|
|
|
|
static char *checkhome(const char *home, const char *fname, bool dotscore)
|
|
{
|
|
const char pref[2] = { '.', '_' };
|
|
int i;
|
|
for(i = 0; i < (dotscore ? 2 : 1); i++) {
|
|
char *c;
|
|
if(dotscore)
|
|
c = curl_maprintf("%s" DIR_CHAR "%c%s", home, pref[i], &fname[1]);
|
|
else
|
|
c = curl_maprintf("%s" DIR_CHAR "%s", home, fname);
|
|
if(c) {
|
|
int fd = open(c, O_RDONLY);
|
|
if(fd >= 0) {
|
|
char *path = strdup(c);
|
|
close(fd);
|
|
curl_free(c);
|
|
return path;
|
|
}
|
|
curl_free(c);
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* findfile() - return the full path name of the file.
|
|
*
|
|
* If 'dotscore' is TRUE, then check for the file first with a leading dot
|
|
* and then with a leading underscore.
|
|
*
|
|
* 1. Iterate over the environment variables in order, and if set, check for
|
|
* the given file to be accessed there, then it is a match.
|
|
* 2. Non-windows: try getpwuid
|
|
*/
|
|
char *findfile(const char *fname, int dotscore)
|
|
{
|
|
int i;
|
|
bool xdg = FALSE;
|
|
DEBUGASSERT(fname && fname[0]);
|
|
DEBUGASSERT((dotscore != 1) || (fname[0] == '.'));
|
|
|
|
if(!fname[0])
|
|
return NULL;
|
|
|
|
for(i = 0; conf_list[i].env; i++) {
|
|
char *home = curl_getenv(conf_list[i].env);
|
|
if(home) {
|
|
char *path;
|
|
const char *filename = fname;
|
|
if(i == 1 /* XDG_CONFIG_HOME */)
|
|
xdg = TRUE;
|
|
if(!home[0]) {
|
|
curl_free(home);
|
|
continue;
|
|
}
|
|
if(conf_list[i].append) {
|
|
char *c = curl_maprintf("%s%s", home, conf_list[i].append);
|
|
curl_free(home);
|
|
if(!c)
|
|
return NULL;
|
|
home = c;
|
|
}
|
|
if(conf_list[i].withoutdot) {
|
|
if(!dotscore || xdg) {
|
|
/* this is not looking for .curlrc, or the XDG_CONFIG_HOME was
|
|
defined so we skip the extended check */
|
|
curl_free(home);
|
|
continue;
|
|
}
|
|
filename++; /* move past the leading dot */
|
|
dotscore = 0; /* disable it for this check */
|
|
}
|
|
path = checkhome(home, filename, dotscore ? dotscore - 1 : 0);
|
|
curl_free(home);
|
|
if(path)
|
|
return path;
|
|
}
|
|
}
|
|
#if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
|
|
{
|
|
struct passwd *pw = getpwuid(geteuid());
|
|
if(pw) {
|
|
char *home = pw->pw_dir;
|
|
if(home && home[0])
|
|
return checkhome(home, fname, FALSE);
|
|
}
|
|
}
|
|
#endif /* PWD-stuff */
|
|
return NULL;
|
|
}
|