Date: Thu, 18 Sep 2014 14:31:18 +0000 (UTC) From: Dag-Erling Smørgrav <des@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r271767 - stable/9/lib/libpam/modules/pam_login_access Message-ID: <201409181431.s8IEVI4C068892@svn.freebsd.org>
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Author: des Date: Thu Sep 18 14:31:18 2014 New Revision: 271767 URL: http://svnweb.freebsd.org/changeset/base/271767 Log: MFH (r271256, r271617): avoid segfault if PAM_RHOST nor PAM_TTY are unset. PR: 83099 Modified: stable/9/lib/libpam/modules/pam_login_access/pam_login_access.c Directory Properties: stable/9/lib/libpam/ (props changed) Modified: stable/9/lib/libpam/modules/pam_login_access/pam_login_access.c ============================================================================== --- stable/9/lib/libpam/modules/pam_login_access/pam_login_access.c Thu Sep 18 14:27:37 2014 (r271766) +++ stable/9/lib/libpam/modules/pam_login_access/pam_login_access.c Thu Sep 18 14:31:18 2014 (r271767) @@ -79,7 +79,14 @@ pam_sm_acct_mgmt(pam_handle_t *pamh, int gethostname(hostname, sizeof hostname); - if (rhost == NULL || *(const char *)rhost == '\0') { + if (rhost != NULL && *(const char *)rhost != '\0') { + PAM_LOG("Checking login.access for user %s from host %s", + (const char *)user, (const char *)rhost); + if (login_access(user, rhost) != 0) + return (PAM_SUCCESS); + PAM_VERBOSE_ERROR("%s is not allowed to log in from %s", + user, rhost); + } else if (tty != NULL && *(const char *)tty != '\0') { PAM_LOG("Checking login.access for user %s on tty %s", (const char *)user, (const char *)tty); if (login_access(user, tty) != 0) @@ -87,12 +94,8 @@ pam_sm_acct_mgmt(pam_handle_t *pamh, int PAM_VERBOSE_ERROR("%s is not allowed to log in on %s", user, tty); } else { - PAM_LOG("Checking login.access for user %s from host %s", - (const char *)user, (const char *)rhost); - if (login_access(user, rhost) != 0) - return (PAM_SUCCESS); - PAM_VERBOSE_ERROR("%s is not allowed to log in from %s", - user, rhost); + PAM_VERBOSE_ERROR("PAM_RHOST or PAM_TTY required"); + return (PAM_AUTHINFO_UNAVAIL); } return (PAM_AUTH_ERR);
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