Source snapshot from Powershell/openssh-portable:latestw_all

Author: bingbing8

.skipped-commit-ids

@@ -19,3 +19,5 @@ fe5b31f69a60d47171836911f144acff77810217	Makefile.inc bits
 ea80f445e819719ccdcb237022cacfac990fdc5c	Makefile.inc warning flags
 b92c93266d8234d493857bb822260dacf4366157	moduli-gen.sh tweak
 b25bf747544265b39af74fe0716dc8d9f5b63b95	Updated moduli
+1bd41cba06a7752de4df304305a8153ebfb6b0ac	rsa.[ch] already removed
+e39b3902fe1d6c4a7ba6a3c58e072219f3c1e604	Makefile changes

Makefile.in

@@ -81,7 +81,7 @@ LIBSSH_OBJS=${LIBOPENSSH_OBJS} \
 	cipher-ctr.o cleanup.o \
 	compat.o crc32.o fatal.o hostfile.o \
 	log.o match.o moduli.o nchan.o packet.o opacket.o \
-	readpass.o rsa.o ttymodes.o xmalloc.o addrmatch.o \
+	readpass.o ttymodes.o xmalloc.o addrmatch.o \
 	atomicio.o key.o dispatch.o mac.o uidswap.o uuencode.o misc.o utf8.o \
 	monitor_fdpass.o rijndael.o ssh-dss.o ssh-ecdsa.o ssh-rsa.o dh.o \
 	msg.o progressmeter.o dns.o entropy.o gss-genr.o umac.o umac128.o \
@@ -92,7 +92,7 @@ LIBSSH_OBJS=${LIBOPENSSH_OBJS} \
 	kex.o kexdh.o kexgex.o kexecdh.o kexc25519.o \
 	kexdhc.o kexgexc.o kexecdhc.o kexc25519c.o \
 	kexdhs.o kexgexs.o kexecdhs.o kexc25519s.o \
-	platform-pledge.o platform-tracing.o
+	platform-pledge.o platform-tracing.o platform-misc.o
 
 SSHOBJS= ssh.o readconf.o clientloop.o sshtty.o \
 	sshconnect.o sshconnect2.o mux.o

README

@@ -30,15 +30,16 @@ The PAM support is now more functional than the popular packages of
 commercial ssh-1.2.x. It checks "account" and "session" modules for
 all logins, not just when using password authentication.
 
-OpenSSH depends on Zlib[3], OpenSSL[4] and optionally PAM[5].
+OpenSSH depends on Zlib[3], OpenSSL[4], and optionally PAM[5] and
+libedit[6]
 
 There is now several mailing lists for this port of OpenSSH. Please
 refer to https://www.openssh.com/list.html for details on how to join.
 
 Please send bug reports and patches to the mailing list
 [email protected]. The list is open to posting by unsubscribed
 users.  Code contribution are welcomed, but please follow the OpenBSD
-style guidelines[6].
+style guidelines[7].
 
 Please refer to the INSTALL document for information on how to install
 OpenSSH on your system.
@@ -61,4 +62,5 @@ References -
 [5] http://www.openpam.org
     http://www.kernel.org/pub/linux/libs/pam/
     (PAM also is standard on Solaris and HP-UX 11)
-[6] http://man.openbsd.org/style.9
+[6] http://thrysoee.dk/editline/ (portable version)
+[7] http://man.openbsd.org/style.9

appveyor.yml

@@ -1,4 +1,4 @@
-version: 0.0.19.0.{build}
+version: 0.0.20.0.{build}
 image: Visual Studio 2015
 
 branches:

auth-pam.c

@@ -926,13 +926,36 @@ finish_pam(void)
 	sshpam_cleanup();
 }
 
+static void
+expose_authinfo(const char *caller)
+{
+	char *auth_info;
+
+	/*
+	 * Expose authentication information to PAM.
+	 * The enviornment variable is versioned. Please increment the
+	 * version suffix if the format of session_info changes.
+	 */
+	if (sshpam_authctxt->session_info == NULL)
+		auth_info = xstrdup("");
+	else if ((auth_info = sshbuf_dup_string(
+	    sshpam_authctxt->session_info)) == NULL)
+		fatal("%s: sshbuf_dup_string failed", __func__);
+
+	debug2("%s: auth information in SSH_AUTH_INFO_0", caller);
+	do_pam_putenv("SSH_AUTH_INFO_0", auth_info);
+	free(auth_info);
+}
+
 u_int
 do_pam_account(void)
 {
 	debug("%s: called", __func__);
 	if (sshpam_account_status != -1)
 		return (sshpam_account_status);
 
+	expose_authinfo(__func__);
+
 	sshpam_err = pam_acct_mgmt(sshpam_handle, 0);
 	debug3("PAM: %s pam_acct_mgmt = %d (%s)", __func__, sshpam_err,
 	    pam_strerror(sshpam_handle, sshpam_err));
@@ -1057,6 +1080,9 @@ void
 do_pam_session(void)
 {
 	debug3("PAM: opening session");
+
+	expose_authinfo(__func__);
+
 	sshpam_err = pam_set_item(sshpam_handle, PAM_CONV,
 	    (const void *)&store_conv);
 	if (sshpam_err != PAM_SUCCESS)

auth.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: auth.c,v 1.122 2017/06/24 06:34:38 djm Exp $ */
+/* $OpenBSD: auth.c,v 1.123 2017/08/18 05:36:45 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  *
@@ -43,9 +43,6 @@
 #ifdef USE_SHADOW
 #include <shadow.h>
 #endif
-#ifdef HAVE_LIBGEN_H
-#include <libgen.h>
-#endif
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
@@ -508,98 +505,6 @@ check_key_in_hostfiles(struct passwd *pw, struct sshkey *key, const char *host,
 	return host_status;
 }
 
-/*
- * Check a given path for security. This is defined as all components
- * of the path to the file must be owned by either the owner of
- * of the file or root and no directories must be group or world writable.
- *
- * XXX Should any specific check be done for sym links ?
- *
- * Takes a file name, its stat information (preferably from fstat() to
- * avoid races), the uid of the expected owner, their home directory and an
- * error buffer plus max size as arguments.
- *
- * Returns 0 on success and -1 on failure
- */
-int
-auth_secure_path(const char *name, struct stat *stp, const char *pw_dir,
-    uid_t uid, char *err, size_t errlen)
-{
-	char buf[PATH_MAX], homedir[PATH_MAX];
-	char *cp;
-	int comparehome = 0;
-	struct stat st;
-
-	if (realpath(name, buf) == NULL) {
-		snprintf(err, errlen, "realpath %s failed: %s", name,
-		    strerror(errno));
-		return -1;
-	}
-	if (pw_dir != NULL && realpath(pw_dir, homedir) != NULL)
-		comparehome = 1;
-
-	if (!S_ISREG(stp->st_mode)) {
-		snprintf(err, errlen, "%s is not a regular file", buf);
-		return -1;
-	}
-	if ((!platform_sys_dir_uid(stp->st_uid) && stp->st_uid != uid) ||
-	    (stp->st_mode & 022) != 0) {
-		snprintf(err, errlen, "bad ownership or modes for file %s",
-		    buf);
-		return -1;
-	}
-
-	/* for each component of the canonical path, walking upwards */
-	for (;;) {
-		if ((cp = dirname(buf)) == NULL) {
-			snprintf(err, errlen, "dirname() failed");
-			return -1;
-		}
-		strlcpy(buf, cp, sizeof(buf));
-
-		if (stat(buf, &st) < 0 ||
-		    (!platform_sys_dir_uid(st.st_uid) && st.st_uid != uid) ||
-		    (st.st_mode & 022) != 0) {
-			snprintf(err, errlen,
-			    "bad ownership or modes for directory %s", buf);
-			return -1;
-		}
-
-		/* If are past the homedir then we can stop */
-		if (comparehome && strcmp(homedir, buf) == 0)
-			break;
-
-		/*
-		 * dirname should always complete with a "/" path,
-		 * but we can be paranoid and check for "." too
-		 */
-		if ((strcmp("/", buf) == 0) || (strcmp(".", buf) == 0))
-			break;
-	}
-	return 0;
-}
-
-/*
- * Version of secure_path() that accepts an open file descriptor to
- * avoid races.
- *
- * Returns 0 on success and -1 on failure
- */
-static int
-secure_filename(FILE *f, const char *file, struct passwd *pw,
-    char *err, size_t errlen)
-{
-	struct stat st;
-
-	/* check the open file to avoid races */
-	if (fstat(fileno(f), &st) < 0) {
-		snprintf(err, errlen, "cannot stat file %s: %s",
-		    file, strerror(errno));
-		return -1;
-	}
-	return auth_secure_path(file, &st, pw->pw_dir, pw->pw_uid, err, errlen);
-}
-
 static FILE *
 auth_openfile(const char *file, struct passwd *pw, int strict_modes,
     int log_missing, char *file_type)
@@ -646,7 +551,7 @@ auth_openfile(const char *file, struct passwd *pw, int strict_modes,
 		return NULL;
 	}
 	if (strict_modes &&
-	    secure_filename(f, file, pw, line, sizeof(line)) != 0) {
+	    safe_path_fd(fileno(f), file, pw, line, sizeof(line)) != 0) {
 		fclose(f);
 		logit("Authentication refused: %s", line);
 		auth_debug_add("Ignored %s: %s", file_type, line);

auth.h

@@ -1,4 +1,4 @@
-/* $OpenBSD: auth.h,v 1.92 2017/06/24 06:34:38 djm Exp $ */
+/* $OpenBSD: auth.h,v 1.93 2017/08/18 05:36:45 djm Exp $ */
 
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
@@ -149,10 +149,6 @@ void	 auth2_record_info(Authctxt *authctxt, const char *, ...)
 	    __attribute__((__nonnull__ (2)));
 void	 auth2_update_session_info(Authctxt *, const char *, const char *);
 
-struct stat;
-int	 auth_secure_path(const char *, struct stat *, const char *, uid_t,
-    char *, size_t);
-
 #ifdef KRB5
 int	auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client, krb5_data *);
 int	auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt);