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eina utils - home and tmp environ - store statitcally and handle setuid 

if setuod we dont want to trust HOME environ at all and get it from
passwd file... also we dont want to keep re-getting too... so store
statically as well as tmp.

this also kind of helps CID 1366469
This commit is contained in:
Carsten Haitzler 2017-02-08 17:35:26 +09:00
parent 5b4c032fb5
commit 8094893877
1 changed files with 29 additions and 5 deletions
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34
src/lib/eina/eina_util.c
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@ -24,6 +24,10 @@
#include <unistd.h>
#ifdef _WIN32
# include <string.h>
#else
# include <sys/types.h>
# include <pwd.h>
# include <string.h>
#endif
#include "eina_config.h"
@ -51,9 +55,10 @@ static char home_storage[8];
EAPI const char *
eina_environment_home_get(void)
{
#ifdef _WIN32
char *home;
static char *home = NULL;
if (home) return home;
#ifdef _WIN32
home = getenv("USERPROFILE");
if (!home) home = getenv("WINDIR");
if (!home &&
@ -66,17 +71,36 @@ eina_environment_home_get(void)
}
if (!home) home = "C:\\";
return home;
#else
return getenv("HOME");
# if defined(HAVE_GETUID) && defined(HAVE_GETEUID)
if (getuid() == geteuid()) home = getenv("HOME");
# endif
if (!home)
{
# ifdef HAVE_GETPWENT
struct passwd pwent, *pwent2 = NULL;
char pwbuf[8129];
if (!getpwuid_r(getuid(), &pwent, pwbuf, sizeof(pwbuf), &pwent2))
{
if ((pwent2) && (pwent.pw_dir))
home = strdup(pwent.pw_dir);
}
if (!home) home = strdup("/tmp");
return home;
}
# endif
#endif
home = strdup(home);
return home;
}
EAPI const char *
eina_environment_tmp_get(void)
{
char *tmp = NULL;
static char *tmp = NULL;
if (tmp) return tmp;
#ifdef _WIN32
tmp = getenv("TMP");
if (!tmp) tmp = getenv("TEMP");