src/usr.bin/ssh/uidswap.c - diff

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version 1.24.10.1, 2006/10/06 03:19:33

version 1.25, 2006/03/19 18:51:19

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/* $OpenBSD$ */

* Author: Tatu Ylonen <ylo@cs.hut.fi>

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* called by a name other than "ssh" or "Secure Shell".

#include <sys/param.h>

#include "includes.h"

#include <errno.h>

#include <pwd.h>

#include <string.h>

#include <unistd.h>

#include <stdarg.h>

#include "log.h"

#include "uidswap.h"

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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 (setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) != 0)

if (setegid(pw->pw_gid) < 0)

fatal("setresgid %u: %s", (u_int)pw->pw_gid, strerror(errno));

fatal("setegid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));

if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) != 0)

if (setgid(pw->pw_gid) < 0)

fatal("setresuid %u: %s", (u_int)pw->pw_uid, strerror(errno));

fatal("setgid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));

}

if (seteuid(pw->pw_uid) < 0)

fatal("seteuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));

void

if (setuid(pw->pw_uid) < 0)

permanently_drop_suid(uid_t uid)

fatal("setuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));

{

debug("permanently_drop_suid: %u", (u_int)uid);

if (setresuid(uid, uid, uid) != 0)

fatal("setresuid %u: %s", (u_int)uid, strerror(errno));

}