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Set PAM_RHOST item from environment variables #16

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Set PAM_RHOST item from environment variables #16

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16 changes: 16 additions & 0 deletions pwauth/auth_pam.c
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Original file line number Diff line number Diff line change
Expand Up @@ -158,6 +158,7 @@ int check_auth(char *login, char *passwd)
struct pam_conv conv= { PAM_conv, (void *)&user_info };
pam_handle_t *pamh= NULL;
int retval;
char *rhost;

#ifdef NEED_UID
struct passwd *pwd;
Expand All @@ -175,8 +176,23 @@ int check_auth(char *login, char *passwd)
user_info.passwd= passwd;
#endif /* PAM_SOLARIS_26 */

/*
* mod_authnz_external provides remote host information in optional
* environment variables:
* IP: the IPv4 or IPv6 address
* HOST: the reverse resolution of the address
* If present, we use one these to set the PAM_RHOST item,
* preferring IP address over HOST.
*/
rhost= getenv("IP");
if (rhost == NULL)
rhost= getenv("HOST");

retval= pam_start("pwauth", login, &conv, &pamh);

if (retval == PAM_SUCCESS && rhost != NULL)
retval= pam_set_item(pamh, PAM_RHOST, rhost);

if (retval == PAM_SUCCESS)
retval= pam_authenticate(pamh, PAM_SILENT);

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