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Fix crash on memory errors.

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This commit is contained in:
Simon Josefsson 2009-03-24 15:21:09 +00:00
parent acd453ee55
commit 81d5c71a4b
1 changed files with 20 additions and 19 deletions
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39
pam_yubico.c
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@ -139,22 +139,22 @@ check_user_token (const char *authfile,
}
/*
* This F'n will get the configuration file name either from argument
* list or from user home directory
* Authorize authenticated OTP_ID for login as USERNAME using
* AUTHFILE. Return 0 on failures, otherwise success.
*/
static int
authorize_user_token (const char *authfile,
const char *username,
const char *usertoken)
const char *otp_id)
{
int retval = 0;
int retval;
if (NULL != authfile)
if (authfile)
{
/* Administrator had configured the file and specified is name
as an argument for this module.
*/
retval = check_user_token (authfile, username, usertoken);
retval = check_user_token (authfile, username, otp_id);
}
else
{
@ -162,24 +162,25 @@ authorize_user_token (const char *authfile,
..... i.e. ~/.yubico/authorized_yubikeys
*/
struct passwd *p;
char *home_dir = NULL;
char *userfile = NULL;
#define USERFILE "/.yubico/authorized_yubikeys"
p = getpwnam (username);
if (p != NULL)
if (p)
{
home_dir = (char *) malloc (strlen (p->pw_dir) + 29);
if (NULL != home_dir)
{
strcpy (home_dir, p->pw_dir);
strcat (home_dir, "/.yubico/authorized_yubikeys");
}
userfile = malloc ((p->pw_dir ? strlen (p->pw_dir) : 0)
+ strlen (USERFILE) + 1);
if (!userfile)
return 0;
strcpy (userfile, p->pw_dir);
strcat (userfile, USERFILE);
}
retval = check_user_token (home_dir, username, usertoken);
if (NULL != home_dir)
{
free (home_dir);
}
retval = check_user_token (userfile, username, otp_id);
free (userfile);
}
return retval;