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-rw-r--r--crypto/openssh/uidswap.c92
1 files changed, 0 insertions, 92 deletions
diff --git a/crypto/openssh/uidswap.c b/crypto/openssh/uidswap.c
deleted file mode 100644
index 8e7c4797e4de..000000000000
--- a/crypto/openssh/uidswap.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * 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"
-RCSID("$OpenBSD: uidswap.c,v 1.9 2000/09/07 20:27:55 deraadt Exp $");
-
-#include "ssh.h"
-#include "uidswap.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.
- */
-
-#ifdef _POSIX_SAVED_IDS
-/* 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
-#endif /* _POSIX_SAVED_IDS */
-
-/* Saved effective uid. */
-static uid_t saved_euid = 0;
-
-/*
- * 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(uid_t uid)
-{
-#ifdef SAVED_IDS_WORK_WITH_SETEUID
- /* Save the current euid. */
- saved_euid = geteuid();
-
- /* Set the effective uid to the given (unprivileged) uid. */
- if (seteuid(uid) == -1)
- debug("seteuid %u: %.100s", (u_int) uid, strerror(errno));
-#else /* SAVED_IDS_WORK_WITH_SETUID */
- /* Propagate the privileged uid to all of our uids. */
- if (setuid(geteuid()) < 0)
- debug("setuid %u: %.100s", (u_int) geteuid(), strerror(errno));
-
- /* Set the effective uid to the given (unprivileged) uid. */
- if (seteuid(uid) == -1)
- debug("seteuid %u: %.100s", (u_int) uid, strerror(errno));
-#endif /* SAVED_IDS_WORK_WITH_SETEUID */
-}
-
-/*
- * Restores to the original uid.
- */
-void
-restore_uid()
-{
-#ifdef SAVED_IDS_WORK_WITH_SETEUID
- /* Set the effective uid back to the saved uid. */
- if (seteuid(saved_euid) < 0)
- debug("seteuid %u: %.100s", (u_int) saved_euid, 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());
-#endif /* SAVED_IDS_WORK_WITH_SETEUID */
-}
-
-/*
- * Permanently sets all uids to the given uid. This cannot be
- * called while temporarily_use_uid is effective.
- */
-void
-permanently_set_uid(uid_t uid)
-{
- if (setuid(uid) < 0)
- debug("setuid %u: %.100s", (u_int) uid, strerror(errno));
-}