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Fix for CONC-441:

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Instead of getlogin() we first try to determine the current user of the process
by calling getpwuid(). If for some reaon getpwuid() will fail, we will use getlogin() instead.
This commit is contained in:
Georg Richter
2020-03-12 18:09:40 +01:00
parent 3be5897c33
commit 8c773db1fb
3 changed files with 10 additions and 7 deletions
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15
libmariadb/mariadb_lib.c
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@@ -497,7 +497,7 @@ struct passwd *getpwuid(uid_t);
char* getlogin(void);
#endif
#if !defined(MSDOS) && ! defined(VMS) && !defined(_WIN32) && !defined(OS2)
#if !defined(_WIN32)
void read_user_name(char *name)
{
if (geteuid() == 0)
@@ -507,13 +507,14 @@ void read_user_name(char *name)
#ifdef HAVE_GETPWUID
struct passwd *skr;
const char *str;
if ((str=getlogin()) == NULL)
if ((skr=getpwuid(geteuid())) != NULL)
{
if ((skr=getpwuid(geteuid())) != NULL)
str=skr->pw_name;
else if (!(str=getenv("USER")) && !(str=getenv("LOGNAME")) &&
!(str=getenv("LOGIN")))
str="UNKNOWN_USER";
str=skr->pw_name;
} else if ((str=getlogin()) == NULL)
{
if (!(str=getenv("USER")) && !(str=getenv("LOGNAME")) &&
!(str=getenv("LOGIN")))
str="UNKNOWN_USER";
}
ma_strmake(name,str,USERNAME_LENGTH);
#elif defined(HAVE_CUSERID)