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Allow regular user use this pam module #43

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Allow regular user use this pam module #43

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4 changes: 3 additions & 1 deletion authfd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -105,6 +105,7 @@ int
ssh_get_authentication_socket(uid_t uid)
{
const char *authsocket;
uid_t prev_uid;
int sock;
struct sockaddr_un sunaddr;
struct stat sock_st;
Expand Down Expand Up @@ -144,6 +145,7 @@ ssh_get_authentication_socket(uid_t uid)
}

errno = 0;
prev_uid = geteuid();
/* To ensure a race condition is not used to circumvent the stat
above, we will temporarily drop UID to the caller */
if (seteuid(uid) < 0)
Expand All @@ -157,7 +159,7 @@ ssh_get_authentication_socket(uid_t uid)
}

/* we now continue the regularly scheduled programming */
if (seteuid(0) < 0)
if (seteuid(prev_uid) < 0)
return -1;

agent_present = 1;
Expand Down