1 files changed, 0 insertions, 278 deletions

diff --git a/crypto/openssh/uidswap.c b/crypto/openssh/uidswap.c
deleted file mode 100644
index 91d878c..0000000
--- a/crypto/openssh/uidswap.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/* $OpenBSD: uidswap.c,v 1.35 2006/08/03 03:34:42 deraadt Exp $ */
-/*
- * Author: Tatu Ylonen <ylo@cs.hut.fi>
- * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
- *                    All rights reserved
- * Code for uid-swapping.
- *
- * As far as I am concerned, the code I have written for this software
- * can be used freely for any purpose.  Any derived versions of this
- * software must be clearly marked as such, and if the derived work is
- * incompatible with the protocol description in the RFC file, it must be
- * called by a name other than "ssh" or "Secure Shell".
- */
-
-#include "includes.h"
-
-#include <sys/param.h>
-#include <errno.h>
-#include <pwd.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdarg.h>
-
-#include <grp.h>
-
-#include "log.h"
-#include "uidswap.h"
-#include "xmalloc.h"
-
-/*
- * Note: all these functions must work in all of the following cases:
- *    1. euid=0, ruid=0
- *    2. euid=0, ruid!=0
- *    3. euid!=0, ruid!=0
- * Additionally, they must work regardless of whether the system has
- * POSIX saved uids or not.
- */
-
-#if defined(_POSIX_SAVED_IDS) && !defined(BROKEN_SAVED_UIDS)
-/* Lets assume that posix saved ids also work with seteuid, even though that
-   is not part of the posix specification. */
-#define SAVED_IDS_WORK_WITH_SETEUID
-/* Saved effective uid. */
-static uid_t 	saved_euid = 0;
-static gid_t	saved_egid = 0;
-#endif
-
-/* Saved effective uid. */
-static int	privileged = 0;
-static int	temporarily_use_uid_effective = 0;
-static gid_t	*saved_egroups = NULL, *user_groups = NULL;
-static int	saved_egroupslen = -1, user_groupslen = -1;
-
-/*
- * Temporarily changes to the given uid.  If the effective user
- * id is not root, this does nothing.  This call cannot be nested.
- */
-void
-temporarily_use_uid(struct passwd *pw)
-{
-	/* Save the current euid, and egroups. */
-#ifdef SAVED_IDS_WORK_WITH_SETEUID
-	saved_euid = geteuid();
-	saved_egid = getegid();
-	debug("temporarily_use_uid: %u/%u (e=%u/%u)",
-	    (u_int)pw->pw_uid, (u_int)pw->pw_gid,
-	    (u_int)saved_euid, (u_int)saved_egid);
-#ifndef HAVE_CYGWIN
-	if (saved_euid != 0) {
-		privileged = 0;
-		return;
-	}
-#endif
-#else
-	if (geteuid() != 0) {
-		privileged = 0;
-		return;
-	}
-#endif /* SAVED_IDS_WORK_WITH_SETEUID */
-
-	privileged = 1;
-	temporarily_use_uid_effective = 1;
-
-	saved_egroupslen = getgroups(0, NULL);
-	if (saved_egroupslen < 0)
-		fatal("getgroups: %.100s", strerror(errno));
-	if (saved_egroupslen > 0) {
-		saved_egroups = xrealloc(saved_egroups,
-		    saved_egroupslen, sizeof(gid_t));
-		if (getgroups(saved_egroupslen, saved_egroups) < 0)
-			fatal("getgroups: %.100s", strerror(errno));
-	} else { /* saved_egroupslen == 0 */
-		if (saved_egroups != NULL)
-			xfree(saved_egroups);
-	}
-
-	/* set and save the user's groups */
-	if (user_groupslen == -1) {
-		if (initgroups(pw->pw_name, pw->pw_gid) < 0)
-			fatal("initgroups: %s: %.100s", pw->pw_name,
-			    strerror(errno));
-
-		user_groupslen = getgroups(0, NULL);
-		if (user_groupslen < 0)
-			fatal("getgroups: %.100s", strerror(errno));
-		if (user_groupslen > 0) {
-			user_groups = xrealloc(user_groups,
-			    user_groupslen, sizeof(gid_t));
-			if (getgroups(user_groupslen, user_groups) < 0)
-				fatal("getgroups: %.100s", strerror(errno));
-		} else { /* user_groupslen == 0 */
-			if (user_groups)
-				xfree(user_groups);
-		}
-	}
-	/* Set the effective uid to the given (unprivileged) uid. */
-	if (setgroups(user_groupslen, user_groups) < 0)
-		fatal("setgroups: %.100s", strerror(errno));
-#ifndef SAVED_IDS_WORK_WITH_SETEUID
-	/* Propagate the privileged gid to all of our gids. */
-	if (setgid(getegid()) < 0)
-		debug("setgid %u: %.100s", (u_int) getegid(), strerror(errno));
-	/* Propagate the privileged uid to all of our uids. */
-	if (setuid(geteuid()) < 0)
-		debug("setuid %u: %.100s", (u_int) geteuid(), strerror(errno));
-#endif /* SAVED_IDS_WORK_WITH_SETEUID */
-	if (setegid(pw->pw_gid) < 0)
-		fatal("setegid %u: %.100s", (u_int)pw->pw_gid,
-		    strerror(errno));
-	if (seteuid(pw->pw_uid) == -1)
-		fatal("seteuid %u: %.100s", (u_int)pw->pw_uid,
-		    strerror(errno));
-}
-
-void
-permanently_drop_suid(uid_t uid)
-{
-	uid_t old_uid = getuid();
-
-	debug("permanently_drop_suid: %u", (u_int)uid);
-#if defined(HAVE_SETRESUID) && !defined(BROKEN_SETRESUID)
-	if (setresuid(uid, uid, uid) < 0)
-		fatal("setresuid %u: %.100s", (u_int)uid, strerror(errno));
-#elif defined(HAVE_SETREUID) && !defined(BROKEN_SETREUID)
-	if (setreuid(uid, uid) < 0)
-		fatal("setreuid %u: %.100s", (u_int)uid, strerror(errno));
-#else
-# ifndef SETEUID_BREAKS_SETUID
-	if (seteuid(uid) < 0)
-		fatal("seteuid %u: %.100s", (u_int)uid, strerror(errno));
-# endif
-	if (setuid(uid) < 0)
-		fatal("setuid %u: %.100s", (u_int)uid, strerror(errno));
-#endif
-
-#ifndef HAVE_CYGWIN
-	/* Try restoration of UID if changed (test clearing of saved uid) */
-	if (old_uid != uid &&
-	    (setuid(old_uid) != -1 || seteuid(old_uid) != -1))
-		fatal("%s: was able to restore old [e]uid", __func__);
-#endif
-
-	/* Verify UID drop was successful */
-	if (getuid() != uid || geteuid() != uid) {
-		fatal("%s: euid incorrect uid:%u euid:%u (should be %u)",
-		    __func__, (u_int)getuid(), (u_int)geteuid(), (u_int)uid);
-	}
-}
-
-/*
- * Restores to the original (privileged) uid.
- */
-void
-restore_uid(void)
-{
-	/* it's a no-op unless privileged */
-	if (!privileged) {
-		debug("restore_uid: (unprivileged)");
-		return;
-	}
-	if (!temporarily_use_uid_effective)
-		fatal("restore_uid: temporarily_use_uid not effective");
-
-#ifdef SAVED_IDS_WORK_WITH_SETEUID
-	debug("restore_uid: %u/%u", (u_int)saved_euid, (u_int)saved_egid);
-	/* Set the effective uid back to the saved privileged uid. */
-	if (seteuid(saved_euid) < 0)
-		fatal("seteuid %u: %.100s", (u_int)saved_euid, strerror(errno));
-	if (setegid(saved_egid) < 0)
-		fatal("setegid %u: %.100s", (u_int)saved_egid, strerror(errno));
-#else /* SAVED_IDS_WORK_WITH_SETEUID */
-	/*
-	 * We are unable to restore the real uid to its unprivileged value.
-	 * Propagate the real uid (usually more privileged) to effective uid
-	 * as well.
-	 */
-	setuid(getuid());
-	setgid(getgid());
-#endif /* SAVED_IDS_WORK_WITH_SETEUID */
-
-	if (setgroups(saved_egroupslen, saved_egroups) < 0)
-		fatal("setgroups: %.100s", strerror(errno));
-	temporarily_use_uid_effective = 0;
-}
-
-/*
- * Permanently sets all uids to the given uid.  This cannot be
- * called while temporarily_use_uid is effective.
- */
-void
-permanently_set_uid(struct passwd *pw)
-{
-	uid_t old_uid = getuid();
-	gid_t old_gid = getgid();
-
-	if (pw == NULL)
-		fatal("permanently_set_uid: no user given");
-	if (temporarily_use_uid_effective)
-		fatal("permanently_set_uid: temporarily_use_uid effective");
-	debug("permanently_set_uid: %u/%u", (u_int)pw->pw_uid,
-	    (u_int)pw->pw_gid);
-
-#if defined(HAVE_SETRESGID) && !defined(BROKEN_SETRESGID)
-	if (setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) < 0)
-		fatal("setresgid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));
-#elif defined(HAVE_SETREGID) && !defined(BROKEN_SETREGID)
-	if (setregid(pw->pw_gid, pw->pw_gid) < 0)
-		fatal("setregid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));
-#else
-	if (setegid(pw->pw_gid) < 0)
-		fatal("setegid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));
-	if (setgid(pw->pw_gid) < 0)
-		fatal("setgid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));
-#endif
-
-#if defined(HAVE_SETRESUID) && !defined(BROKEN_SETRESUID)
-	if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) < 0)
-		fatal("setresuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));
-#elif defined(HAVE_SETREUID) && !defined(BROKEN_SETREUID)
-	if (setreuid(pw->pw_uid, pw->pw_uid) < 0)
-		fatal("setreuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));
-#else
-# ifndef SETEUID_BREAKS_SETUID
-	if (seteuid(pw->pw_uid) < 0)
-		fatal("seteuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));
-# endif
-	if (setuid(pw->pw_uid) < 0)
-		fatal("setuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));
-#endif
-
-#ifndef HAVE_CYGWIN
-	/* Try restoration of GID if changed (test clearing of saved gid) */
-	if (old_gid != pw->pw_gid && pw->pw_uid != 0 &&
-	    (setgid(old_gid) != -1 || setegid(old_gid) != -1))
-		fatal("%s: was able to restore old [e]gid", __func__);
-#endif
-
-	/* Verify GID drop was successful */
-	if (getgid() != pw->pw_gid || getegid() != pw->pw_gid) {
-		fatal("%s: egid incorrect gid:%u egid:%u (should be %u)",
-		    __func__, (u_int)getgid(), (u_int)getegid(),
-		    (u_int)pw->pw_gid);
-	}
-
-#ifndef HAVE_CYGWIN
-	/* Try restoration of UID if changed (test clearing of saved uid) */
-	if (old_uid != pw->pw_uid &&
-	    (setuid(old_uid) != -1 || seteuid(old_uid) != -1))
-		fatal("%s: was able to restore old [e]uid", __func__);
-#endif
-
-	/* Verify UID drop was successful */
-	if (getuid() != pw->pw_uid || geteuid() != pw->pw_uid) {
-		fatal("%s: euid incorrect uid:%u euid:%u (should be %u)",
-		    __func__, (u_int)getuid(), (u_int)geteuid(),
-		    (u_int)pw->pw_uid);
-	}
-}