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-rw-r--r--sys/dev/awi/awi_wep.c533
1 files changed, 0 insertions, 533 deletions
diff --git a/sys/dev/awi/awi_wep.c b/sys/dev/awi/awi_wep.c
deleted file mode 100644
index c501b72..0000000
--- a/sys/dev/awi/awi_wep.c
+++ /dev/null
@@ -1,533 +0,0 @@
-/* $NetBSD: awi_wep.c,v 1.4 2000/08/14 11:28:03 onoe Exp $ */
-/*
- * Copyright (c) 2000 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Atsushi Onoe.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the NetBSD
- * Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * WEP support framework for the awi driver.
- *
- * No actual encryption capability is provided here, but any can be added
- * to awi_wep_algo table below.
- *
- * Note that IEEE802.11 specification states WEP uses RC4 with 40bit key,
- * which is a proprietary encryption algorithm available under license
- * from RSA Data Security Inc. Using another algorithm, includes null
- * encryption provided here, the awi driver cannot be able to communicate
- * with other stations.
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/mbuf.h>
-#include <sys/proc.h>
-#include <sys/malloc.h>
-#include <sys/socket.h>
-#include <sys/errno.h>
-#include <sys/sockio.h>
-#if defined(__FreeBSD__) && __FreeBSD_version >= 400000
-#include <sys/bus.h>
-#else
-#include <sys/device.h>
-#endif
-
-#include <net/if.h>
-#include <net/if_dl.h>
-#ifdef __FreeBSD__
-#include <net/ethernet.h>
-#include <net/if_arp.h>
-#else
-#include <net/if_ether.h>
-#endif
-#include <net/if_media.h>
-
-#include <net80211/ieee80211.h>
-
-#include <machine/cpu.h>
-#include <machine/bus.h>
-
-#ifdef __NetBSD__
-#include <dev/ic/am79c930reg.h>
-#include <dev/ic/am79c930var.h>
-#include <dev/ic/awireg.h>
-#include <dev/ic/awivar.h>
-
-#include <crypto/arc4/arc4.h>
-#endif
-
-#ifdef __FreeBSD__
-#include <dev/awi/am79c930reg.h>
-#include <dev/awi/am79c930var.h>
-#include <dev/awi/awireg.h>
-#include <dev/awi/awivar.h>
-
-#include <crypto/rc4/rc4.h>
-static __inline int
-arc4_ctxlen(void)
-{
- return sizeof(struct rc4_state);
-}
-
-static __inline void
-arc4_setkey(void *ctx, u_int8_t *key, int keylen)
-{
- rc4_init(ctx, key, keylen);
-}
-
-static __inline void
-arc4_encrypt(void *ctx, u_int8_t *dst, u_int8_t *src, int len)
-{
- rc4_crypt(ctx, src, dst, len);
-}
-#endif
-
-static void awi_crc_init(void);
-static u_int32_t awi_crc_update(u_int32_t crc, u_int8_t *buf, int len);
-
-static int awi_null_ctxlen(void);
-static void awi_null_setkey(void *ctx, u_int8_t *key, int keylen);
-static void awi_null_copy(void *ctx, u_int8_t *dst, u_int8_t *src, int len);
-
-/* XXX: the order should be known to wiconfig/user */
-
-static struct awi_wep_algo awi_wep_algo[] = {
-/* 0: no wep */
- { "no" }, /* dummy for no wep */
-
-/* 1: normal wep (arc4) */
- { "arc4", arc4_ctxlen, arc4_setkey,
- arc4_encrypt, arc4_encrypt },
-
-/* 2: debug wep (null) */
- { "null", awi_null_ctxlen, awi_null_setkey,
- awi_null_copy, awi_null_copy },
- /* dummy for wep without encryption */
-};
-
-int
-awi_wep_setnwkey(sc, nwkey)
- struct awi_softc *sc;
- struct ieee80211_nwkey *nwkey;
-{
- int i, len, error;
- u_int8_t keybuf[AWI_MAX_KEYLEN];
-
- if (nwkey->i_defkid <= 0 ||
- nwkey->i_defkid > IEEE80211_WEP_NKID)
- return EINVAL;
- error = 0;
- for (i = 0; i < IEEE80211_WEP_NKID; i++) {
- if (nwkey->i_key[i].i_keydat == NULL)
- continue;
- len = nwkey->i_key[i].i_keylen;
- if (len > sizeof(keybuf)) {
- error = EINVAL;
- break;
- }
- error = copyin(nwkey->i_key[i].i_keydat, keybuf, len);
- if (error)
- break;
- error = awi_wep_setkey(sc, i, keybuf, len);
- if (error)
- break;
- }
- if (error == 0) {
- sc->sc_wep_defkid = nwkey->i_defkid - 1;
- error = awi_wep_setalgo(sc, nwkey->i_wepon);
- if (error == 0 && sc->sc_enabled) {
- awi_stop(sc);
- error = awi_init(sc);
- }
- }
- return error;
-}
-
-int
-awi_wep_getnwkey(sc, nwkey)
- struct awi_softc *sc;
- struct ieee80211_nwkey *nwkey;
-{
- int i, len, error, suerr;
- u_int8_t keybuf[AWI_MAX_KEYLEN];
-
- nwkey->i_wepon = awi_wep_getalgo(sc);
- nwkey->i_defkid = sc->sc_wep_defkid + 1;
- /* do not show any keys to non-root user */
-#ifdef __FreeBSD__
-#if __FreeBSD_version < 500028
- suerr = suser(curproc);
-#else
- suerr = suser(curthread);
-#endif
-#else
- suerr = suser(curproc->p_ucred, &curproc->p_acflag);
-#endif
- error = 0;
- for (i = 0; i < IEEE80211_WEP_NKID; i++) {
- if (nwkey->i_key[i].i_keydat == NULL)
- continue;
- if (suerr) {
- error = suerr;
- break;
- }
- len = sizeof(keybuf);
- error = awi_wep_getkey(sc, i, keybuf, &len);
- if (error)
- break;
- if (nwkey->i_key[i].i_keylen < len) {
- error = ENOSPC;
- break;
- }
- nwkey->i_key[i].i_keylen = len;
- error = copyout(keybuf, nwkey->i_key[i].i_keydat, len);
- if (error)
- break;
- }
- return error;
-}
-
-int
-awi_wep_getalgo(sc)
- struct awi_softc *sc;
-{
-
- if (sc->sc_wep_algo == NULL)
- return 0;
- return sc->sc_wep_algo - awi_wep_algo;
-}
-
-int
-awi_wep_setalgo(sc, algo)
- struct awi_softc *sc;
- int algo;
-{
- struct awi_wep_algo *awa;
- int ctxlen;
-
- awi_crc_init(); /* XXX: not belongs here */
- if (algo < 0 || algo >= sizeof(awi_wep_algo)/sizeof(awi_wep_algo[0]))
- return EINVAL;
- awa = &awi_wep_algo[algo];
- if (awa->awa_name == NULL)
- return EINVAL;
- if (awa->awa_ctxlen == NULL) {
- awa = NULL;
- ctxlen = 0;
- } else
- ctxlen = awa->awa_ctxlen();
- if (sc->sc_wep_ctx != NULL) {
- free(sc->sc_wep_ctx, M_DEVBUF);
- sc->sc_wep_ctx = NULL;
- }
- if (ctxlen) {
- sc->sc_wep_ctx = malloc(ctxlen, M_DEVBUF, M_NOWAIT);
- if (sc->sc_wep_ctx == NULL)
- return ENOMEM;
- }
- sc->sc_wep_algo = awa;
- return 0;
-}
-
-int
-awi_wep_setkey(sc, kid, key, keylen)
- struct awi_softc *sc;
- int kid;
- unsigned char *key;
- int keylen;
-{
-
- if (kid < 0 || kid >= IEEE80211_WEP_NKID)
- return EINVAL;
- if (keylen < 0 || keylen + IEEE80211_WEP_IVLEN > AWI_MAX_KEYLEN)
- return EINVAL;
- sc->sc_wep_keylen[kid] = keylen;
- if (keylen > 0)
- memcpy(sc->sc_wep_key[kid] + IEEE80211_WEP_IVLEN, key, keylen);
- return 0;
-}
-
-int
-awi_wep_getkey(sc, kid, key, keylen)
- struct awi_softc *sc;
- int kid;
- unsigned char *key;
- int *keylen;
-{
-
- if (kid < 0 || kid >= IEEE80211_WEP_NKID)
- return EINVAL;
- if (*keylen < sc->sc_wep_keylen[kid])
- return ENOSPC;
- *keylen = sc->sc_wep_keylen[kid];
- if (*keylen > 0)
- memcpy(key, sc->sc_wep_key[kid] + IEEE80211_WEP_IVLEN, *keylen);
- return 0;
-}
-
-struct mbuf *
-awi_wep_encrypt(sc, m0, txflag)
- struct awi_softc *sc;
- struct mbuf *m0;
- int txflag;
-{
- struct mbuf *m, *n, *n0;
- struct ieee80211_frame *wh;
- struct awi_wep_algo *awa;
- int left, len, moff, noff, keylen, kid;
- u_int32_t iv, crc;
- u_int8_t *key, *ivp;
- void *ctx;
- u_int8_t crcbuf[IEEE80211_WEP_CRCLEN];
-
- n0 = NULL;
- awa = sc->sc_wep_algo;
- if (awa == NULL)
- goto fail;
- ctx = sc->sc_wep_ctx;
- m = m0;
- left = m->m_pkthdr.len;
- MGET(n, M_DONTWAIT, m->m_type);
- n0 = n;
- if (n == NULL)
- goto fail;
- M_MOVE_PKTHDR(n, m);
- len = IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN;
- if (txflag) {
- n->m_pkthdr.len += len;
- } else {
- n->m_pkthdr.len -= len;
- left -= len;
- }
- n->m_len = MHLEN;
- if (n->m_pkthdr.len >= MINCLSIZE) {
- MCLGET(n, M_DONTWAIT);
- if (n->m_flags & M_EXT)
- n->m_len = n->m_ext.ext_size;
- }
- len = sizeof(struct ieee80211_frame);
- memcpy(mtod(n, caddr_t), mtod(m, caddr_t), len);
- left -= len;
- moff = len;
- noff = len;
- if (txflag) {
- kid = sc->sc_wep_defkid;
- wh = mtod(n, struct ieee80211_frame *);
- wh->i_fc[1] |= IEEE80211_FC1_WEP;
- iv = random();
- /*
- * store IV, byte order is not the matter since it's random.
- * assuming IEEE80211_WEP_IVLEN is 3
- */
- ivp = mtod(n, u_int8_t *) + noff;
- ivp[0] = (iv >> 16) & 0xff;
- ivp[1] = (iv >> 8) & 0xff;
- ivp[2] = iv & 0xff;
- ivp[IEEE80211_WEP_IVLEN] = kid << 6; /* pad and keyid */
- noff += IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN;
- } else {
- ivp = mtod(m, u_int8_t *) + moff;
- kid = ivp[IEEE80211_WEP_IVLEN] >> 6;
- moff += IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN;
- }
- key = sc->sc_wep_key[kid];
- keylen = sc->sc_wep_keylen[kid];
- /* assuming IEEE80211_WEP_IVLEN is 3 */
- key[0] = ivp[0];
- key[1] = ivp[1];
- key[2] = ivp[2];
- awa->awa_setkey(ctx, key, IEEE80211_WEP_IVLEN + keylen);
-
- /* encrypt with calculating CRC */
- crc = ~0;
- while (left > 0) {
- len = m->m_len - moff;
- if (len == 0) {
- m = m->m_next;
- moff = 0;
- continue;
- }
- if (len > n->m_len - noff) {
- len = n->m_len - noff;
- if (len == 0) {
- MGET(n->m_next, M_DONTWAIT, n->m_type);
- if (n->m_next == NULL)
- goto fail;
- n = n->m_next;
- n->m_len = MLEN;
- if (left >= MINCLSIZE) {
- MCLGET(n, M_DONTWAIT);
- if (n->m_flags & M_EXT)
- n->m_len = n->m_ext.ext_size;
- }
- noff = 0;
- continue;
- }
- }
- if (len > left)
- len = left;
- if (txflag) {
- awa->awa_encrypt(ctx, mtod(n, caddr_t) + noff,
- mtod(m, caddr_t) + moff, len);
- crc = awi_crc_update(crc, mtod(m, caddr_t) + moff, len);
- } else {
- awa->awa_decrypt(ctx, mtod(n, caddr_t) + noff,
- mtod(m, caddr_t) + moff, len);
- crc = awi_crc_update(crc, mtod(n, caddr_t) + noff, len);
- }
- left -= len;
- moff += len;
- noff += len;
- }
- crc = ~crc;
- if (txflag) {
- LE_WRITE_4(crcbuf, crc);
- if (n->m_len >= noff + sizeof(crcbuf))
- n->m_len = noff + sizeof(crcbuf);
- else {
- n->m_len = noff;
- MGET(n->m_next, M_DONTWAIT, n->m_type);
- if (n->m_next == NULL)
- goto fail;
- n = n->m_next;
- n->m_len = sizeof(crcbuf);
- noff = 0;
- }
- awa->awa_encrypt(ctx, mtod(n, caddr_t) + noff, crcbuf,
- sizeof(crcbuf));
- } else {
- n->m_len = noff;
- for (noff = 0; noff < sizeof(crcbuf); noff += len) {
- len = sizeof(crcbuf) - noff;
- if (len > m->m_len - moff)
- len = m->m_len - moff;
- if (len > 0)
- awa->awa_decrypt(ctx, crcbuf + noff,
- mtod(m, caddr_t) + moff, len);
- m = m->m_next;
- moff = 0;
- }
- if (crc != LE_READ_4(crcbuf))
- goto fail;
- }
- m_freem(m0);
- return n0;
-
- fail:
- m_freem(m0);
- m_freem(n0);
- return NULL;
-}
-
-/*
- * CRC 32 -- routine from RFC 2083
- */
-
-/* Table of CRCs of all 8-bit messages */
-static u_int32_t awi_crc_table[256];
-static int awi_crc_table_computed = 0;
-
-/* Make the table for a fast CRC. */
-static void
-awi_crc_init()
-{
- u_int32_t c;
- int n, k;
-
- if (awi_crc_table_computed)
- return;
- for (n = 0; n < 256; n++) {
- c = (u_int32_t)n;
- for (k = 0; k < 8; k++) {
- if (c & 1)
- c = 0xedb88320UL ^ (c >> 1);
- else
- c = c >> 1;
- }
- awi_crc_table[n] = c;
- }
- awi_crc_table_computed = 1;
-}
-
-/*
- * Update a running CRC with the bytes buf[0..len-1]--the CRC
- * should be initialized to all 1's, and the transmitted value
- * is the 1's complement of the final running CRC
- */
-
-static u_int32_t
-awi_crc_update(crc, buf, len)
- u_int32_t crc;
- u_int8_t *buf;
- int len;
-{
- u_int8_t *endbuf;
-
- for (endbuf = buf + len; buf < endbuf; buf++)
- crc = awi_crc_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
- return crc;
-}
-
-/*
- * Null -- do nothing but copy.
- */
-
-static int
-awi_null_ctxlen()
-{
-
- return 0;
-}
-
-static void
-awi_null_setkey(ctx, key, keylen)
- void *ctx;
- u_char *key;
- int keylen;
-{
-}
-
-static void
-awi_null_copy(ctx, dst, src, len)
- void *ctx;
- u_char *dst;
- u_char *src;
- int len;
-{
-
- memcpy(dst, src, len);
-}
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