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/*
* Copyright (c) 1999, Boris Popov
* All rights reserved.
*
* 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. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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("$FreeBSD$");
#include <sys/types.h>
#include <arpa/inet.h>
#include <errno.h>
#include <string.h>
#include <netncp/ncp_lib.h>
static void nw_passencrypt(char *old, char *new, char *out);
int
ncp_get_bindery_object_id(NWCONN_HANDLE connid, u_int16_t object_type,
const char *object_name, struct ncp_bindery_object *target)
{
int error;
DECLARE_RQ;
ncp_init_request_s(conn, 53);
ncp_add_word_hl(conn, object_type);
ncp_add_pstring(conn, object_name);
if ((error = ncp_request(connid, 23, conn)) != 0) {
return error;
}
if (conn->rpsize < 54) {
return EACCES;
}
target->object_id = ncp_reply_dword_hl(conn, 0);
target->object_type = ncp_reply_word_hl(conn, 4);
memcpy(target->object_name, ncp_reply_data(conn, 6), 48);
return 0;
}
int
ncp_read_property_value(NWCONN_HANDLE connid, int object_type,
const char *object_name, int segment, const char *prop_name,
struct nw_property *target)
{
int error;
struct ncp_buf conn;
ncp_init_request_s(&conn, 61);
ncp_add_word_hl(&conn, object_type);
ncp_add_pstring(&conn, object_name);
ncp_add_byte(&conn, segment);
ncp_add_pstring(&conn, prop_name);
if ((error = ncp_request(connid,23,&conn)) != 0) {
return error;
}
memcpy(&(target->value), ncp_reply_data(&conn, 0), 128);
target->more_flag = ncp_reply_byte(&conn, 128);
target->property_flag = ncp_reply_byte(&conn, 129);
return 0;
}
int
ncp_scan_bindery_object(NWCONN_HANDLE connid, u_int32_t last_id,
u_int16_t object_type, char *search_string,
struct ncp_bindery_object *target)
{
int error;
DECLARE_RQ;
ncp_init_request_s(conn, 55);
ncp_add_dword_hl(conn, last_id);
ncp_add_word_hl(conn, object_type);
ncp_add_pstring(conn, search_string);
error = ncp_request(connid, 23, conn);
if (error) return error;
target->object_id = ncp_reply_dword_hl(conn, 0);
target->object_type = ncp_reply_word_hl(conn, 4);
memcpy(target->object_name, ncp_reply_data(conn, 6),NCP_BINDERY_NAME_LEN);
target->object_flags = ncp_reply_byte(conn, 54);
target->object_security = ncp_reply_byte(conn, 55);
target->object_has_prop = ncp_reply_byte(conn, 56);
return 0;
}
int
ncp_get_bindery_object_name(NWCONN_HANDLE connid, u_int32_t object_id,
struct ncp_bindery_object *target)
{
int error;
DECLARE_RQ;
ncp_init_request_s(conn, 54);
ncp_add_dword_hl(conn, object_id);
if ((error = ncp_request(connid, 23, conn)) != 0)
return error;
target->object_id = ncp_reply_dword_hl(conn, 0);
target->object_type = ncp_reply_word_hl(conn, 4);
memcpy(target->object_name, ncp_reply_data(conn, 6), 48);
return 0;
}
int
ncp_change_obj_passwd(NWCONN_HANDLE connid,
const struct ncp_bindery_object *object,
const u_char *key,
const u_char *oldpasswd,
const u_char *newpasswd)
{
long id = htonl(object->object_id);
u_char cryptkey[8];
u_char newpwd[16]; /* new passwd as stored by server */
u_char oldpwd[16]; /* old passwd as stored by server */
u_char len;
DECLARE_RQ;
memcpy(cryptkey, key, 8);
nw_keyhash((u_char *)&id, oldpasswd, strlen(oldpasswd), oldpwd);
nw_keyhash((u_char *)&id, newpasswd, strlen(newpasswd), newpwd);
nw_encrypt(cryptkey, oldpwd, cryptkey);
nw_passencrypt(oldpwd, newpwd, newpwd);
nw_passencrypt(oldpwd + 8, newpwd + 8, newpwd + 8);
if ((len = strlen(newpasswd)) > 63) {
len = 63;
}
len = ((len ^ oldpwd[0] ^ oldpwd[1]) & 0x7f) | 0x40;
ncp_init_request_s(conn, 75);
ncp_add_mem(conn, cryptkey, 8);
ncp_add_word_hl(conn, object->object_type);
ncp_add_pstring(conn, object->object_name);
ncp_add_byte(conn, len);
ncp_add_mem(conn, newpwd, 16);
return ncp_request(connid, 23, conn);
}
/*
* target is a 8-byte buffer
*/
int
ncp_get_encryption_key(NWCONN_HANDLE cH, char *target) {
int error;
DECLARE_RQ;
ncp_init_request_s(conn, 23);
error = ncp_request(cH, 23, conn);
if (error)
return error;
if (conn->rpsize < 8)
return EACCES;
memcpy(target, ncp_reply_data(conn, 0), 8);
return 0;
}
int
ncp_keyed_verify_password(NWCONN_HANDLE cH, char *key, char *passwd,
struct ncp_bindery_object *objinfo)
{
u_long id = htonl(objinfo->object_id);
u_char cryptkey[8];
u_char buf[128];
DECLARE_RQ;
nw_keyhash((u_char *)&id, passwd, strlen(passwd), buf);
nw_encrypt(key, buf, cryptkey);
ncp_init_request_s(conn, 74);
ncp_add_mem(conn, cryptkey, sizeof(cryptkey));
ncp_add_word_hl(conn, objinfo->object_type);
ncp_add_pstring(conn, objinfo->object_name);
return ncp_request(cH, 23, conn);
}
static char passkeys[256 + 16] = {
0x0f, 0x08, 0x05, 0x07, 0x0c, 0x02, 0x0e, 0x09,
0x00, 0x01, 0x06, 0x0d, 0x03, 0x04, 0x0b, 0x0a,
0x02, 0x0c, 0x0e, 0x06, 0x0f, 0x00, 0x01, 0x08,
0x0d, 0x03, 0x0a, 0x04, 0x09, 0x0b, 0x05, 0x07,
0x05, 0x02, 0x09, 0x0f, 0x0c, 0x04, 0x0d, 0x00,
0x0e, 0x0a, 0x06, 0x08, 0x0b, 0x01, 0x03, 0x07,
0x0f, 0x0d, 0x02, 0x06, 0x07, 0x08, 0x05, 0x09,
0x00, 0x04, 0x0c, 0x03, 0x01, 0x0a, 0x0b, 0x0e,
0x05, 0x0e, 0x02, 0x0b, 0x0d, 0x0a, 0x07, 0x00,
0x08, 0x06, 0x04, 0x01, 0x0f, 0x0c, 0x03, 0x09,
0x08, 0x02, 0x0f, 0x0a, 0x05, 0x09, 0x06, 0x0c,
0x00, 0x0b, 0x01, 0x0d, 0x07, 0x03, 0x04, 0x0e,
0x0e, 0x08, 0x00, 0x09, 0x04, 0x0b, 0x02, 0x07,
0x0c, 0x03, 0x0a, 0x05, 0x0d, 0x01, 0x06, 0x0f,
0x01, 0x04, 0x08, 0x0a, 0x0d, 0x0b, 0x07, 0x0e,
0x05, 0x0f, 0x03, 0x09, 0x00, 0x02, 0x06, 0x0c,
0x05, 0x03, 0x0c, 0x08, 0x0b, 0x02, 0x0e, 0x0a,
0x04, 0x01, 0x0d, 0x00, 0x06, 0x07, 0x0f, 0x09,
0x06, 0x00, 0x0b, 0x0e, 0x0d, 0x04, 0x0c, 0x0f,
0x07, 0x02, 0x08, 0x0a, 0x01, 0x05, 0x03, 0x09,
0x0b, 0x05, 0x0a, 0x0e, 0x0f, 0x01, 0x0c, 0x00,
0x06, 0x04, 0x02, 0x09, 0x03, 0x0d, 0x07, 0x08,
0x07, 0x02, 0x0a, 0x00, 0x0e, 0x08, 0x0f, 0x04,
0x0c, 0x0b, 0x09, 0x01, 0x05, 0x0d, 0x03, 0x06,
0x07, 0x04, 0x0f, 0x09, 0x05, 0x01, 0x0c, 0x0b,
0x00, 0x03, 0x08, 0x0e, 0x02, 0x0a, 0x06, 0x0d,
0x09, 0x04, 0x08, 0x00, 0x0a, 0x03, 0x01, 0x0c,
0x05, 0x0f, 0x07, 0x02, 0x0b, 0x0e, 0x06, 0x0d,
0x09, 0x05, 0x04, 0x07, 0x0e, 0x08, 0x03, 0x01,
0x0d, 0x0b, 0x0c, 0x02, 0x00, 0x0f, 0x06, 0x0a,
0x09, 0x0a, 0x0b, 0x0d, 0x05, 0x03, 0x0f, 0x00,
0x01, 0x0c, 0x08, 0x07, 0x06, 0x04, 0x0e, 0x02,
0x03, 0x0e, 0x0f, 0x02, 0x0d, 0x0c, 0x04, 0x05,
0x09, 0x06, 0x00, 0x01, 0x0b, 0x07, 0x0a, 0x08
};
static void
nw_passencrypt(char *old, char *new, char *out)
{
char *p, v;
char copy[8];
int i, di, ax;
#define HIGH(x) (((x) >> 4) & 0xf)
#define LOW(x) ((x) & 0xf)
memcpy(copy, new, 8);
for (i = 0; i < 16; i++) {
for (di = 0, ax = 0, p = old; di < 8; di++, ax += 0x20, p++) {
v = copy[di] ^ *p;
copy[di] = (passkeys[HIGH(v) + ax + 0x10] << 4) |
passkeys[LOW(v) + ax];
}
v = old[7];
for (p = old + 7; p > old; p--) {
*p = HIGH(p[-1]) | ((*p) << 4);
}
*old = HIGH(v) | (*old) << 4;
bzero(out, 8);
for (di = 0; di < 16; di++) {
v = passkeys[di + 0x100];
v = (v & 1) ? HIGH(copy[v / 2]) : LOW(copy[v / 2]);
out[di / 2] |= ((di & 1) ? v << 4 : v);
}
memcpy(copy, out, 8);
}
}
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