From owner-svn-src-all@FreeBSD.ORG Tue Jun 3 19:01:39 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 16D88D43; Tue, 3 Jun 2014 19:01:39 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 03A1A2AEC; Tue, 3 Jun 2014 19:01:39 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s53J1csf026706; Tue, 3 Jun 2014 19:01:38 GMT (envelope-from delphij@svn.freebsd.org) Received: (from delphij@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s53J1cTf026705; Tue, 3 Jun 2014 19:01:38 GMT (envelope-from delphij@svn.freebsd.org) Message-Id: <201406031901.s53J1cTf026705@svn.freebsd.org> From: Xin LI Date: Tue, 3 Jun 2014 19:01:38 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r267013 - head/contrib/openpam/lib/libpam X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Jun 2014 19:01:39 -0000 Author: delphij Date: Tue Jun 3 19:01:38 2014 New Revision: 267013 URL: http://svnweb.freebsd.org/changeset/base/267013 Log: Fix incorrect error handling in PAM policy parser. [SA-14:13] Modified: head/contrib/openpam/lib/libpam/openpam_configure.c Modified: head/contrib/openpam/lib/libpam/openpam_configure.c ============================================================================== --- head/contrib/openpam/lib/libpam/openpam_configure.c Tue Jun 3 17:54:18 2014 (r267012) +++ head/contrib/openpam/lib/libpam/openpam_configure.c Tue Jun 3 19:01:38 2014 (r267013) @@ -1,6 +1,6 @@ /*- * Copyright (c) 2001-2003 Networks Associates Technology, Inc. - * Copyright (c) 2004-2012 Dag-Erling Smørgrav + * Copyright (c) 2004-2014 Dag-Erling Smørgrav * All rights reserved. * * This software was developed for the FreeBSD Project by ThinkSec AS and @@ -193,6 +193,7 @@ openpam_parse_chain(pam_handle_t *pamh, openpam_log(PAM_LOG_ERROR, "%s(%d): missing or invalid facility", filename, lineno); + errno = EINVAL; goto fail; } if (facility != fclt && facility != PAM_FACILITY_ANY) { @@ -208,18 +209,28 @@ openpam_parse_chain(pam_handle_t *pamh, openpam_log(PAM_LOG_ERROR, "%s(%d): missing or invalid service name", filename, lineno); + errno = EINVAL; goto fail; } if (wordv[i] != NULL) { openpam_log(PAM_LOG_ERROR, "%s(%d): garbage at end of line", filename, lineno); + errno = EINVAL; goto fail; } ret = openpam_load_chain(pamh, servicename, fclt); FREEV(wordc, wordv); - if (ret < 0) + if (ret < 0) { + /* + * Bogus errno, but this ensures that the + * outer loop does not just ignore the + * error and keep searching. + */ + if (errno == ENOENT) + errno = EINVAL; goto fail; + } continue; } @@ -229,6 +240,7 @@ openpam_parse_chain(pam_handle_t *pamh, openpam_log(PAM_LOG_ERROR, "%s(%d): missing or invalid control flag", filename, lineno); + errno = EINVAL; goto fail; } @@ -238,6 +250,7 @@ openpam_parse_chain(pam_handle_t *pamh, openpam_log(PAM_LOG_ERROR, "%s(%d): missing or invalid module name", filename, lineno); + errno = EINVAL; goto fail; } @@ -247,8 +260,11 @@ openpam_parse_chain(pam_handle_t *pamh, this->flag = ctlf; /* load module */ - if ((this->module = openpam_load_module(modulename)) == NULL) + if ((this->module = openpam_load_module(modulename)) == NULL) { + if (errno == ENOENT) + errno = ENOEXEC; goto fail; + } /* * The remaining items in wordv are the module's @@ -281,7 +297,11 @@ openpam_parse_chain(pam_handle_t *pamh, * The loop ended because openpam_readword() returned NULL, which * can happen for four different reasons: an I/O error (ferror(f) * is true), a memory allocation failure (ferror(f) is false, - * errno is non-zero) + * feof(f) is false, errno is non-zero), the file ended with an + * unterminated quote or backslash escape (ferror(f) is false, + * feof(f) is true, errno is non-zero), or the end of the file was + * reached without error (ferror(f) is false, feof(f) is true, + * errno is zero). */ if (ferror(f) || errno != 0) goto syserr; @@ -402,6 +422,9 @@ openpam_load_chain(pam_handle_t *pamh, } ret = openpam_load_file(pamh, service, facility, filename, style); + /* success */ + if (ret > 0) + RETURNN(ret); /* the file exists, but an error occurred */ if (ret == -1 && errno != ENOENT) RETURNN(ret); @@ -411,7 +434,8 @@ openpam_load_chain(pam_handle_t *pamh, } /* no hit */ - RETURNN(0); + errno = ENOENT; + RETURNN(-1); } /* @@ -432,8 +456,10 @@ openpam_configure(pam_handle_t *pamh, openpam_log(PAM_LOG_ERROR, "invalid service name"); RETURNC(PAM_SYSTEM_ERR); } - if (openpam_load_chain(pamh, service, PAM_FACILITY_ANY) < 0) - goto load_err; + if (openpam_load_chain(pamh, service, PAM_FACILITY_ANY) < 0) { + if (errno != ENOENT) + goto load_err; + } for (fclt = 0; fclt < PAM_NUM_FACILITIES; ++fclt) { if (pamh->chains[fclt] != NULL) continue;