text: /*
   * 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. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *    This product includes software developed by Boris Popov.
   * 4. 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.
   *
   * $FreeBSD: src/lib/libncp/ncpl_bind.c,v 1.2 1999/10/31 03:39:03 bp Exp $
   * $DragonFly: src/lib/libncp/ncpl_bind.c,v 1.2 2003/06/17 04:26:50 dillon Exp $
   */
  #include <sys/types.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);
  	}
  }
  