268 lines
8.2 KiB
C
268 lines
8.2 KiB
C
/*
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* Copyright (c) 1999, Boris Popov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <string.h>
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#include <netncp/ncp_lib.h>
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static void nw_passencrypt(char *old, char *new, char *out);
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int
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ncp_get_bindery_object_id(NWCONN_HANDLE connid, u_int16_t object_type,
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const char *object_name, struct ncp_bindery_object *target)
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{
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int error;
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DECLARE_RQ;
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ncp_init_request_s(conn, 53);
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ncp_add_word_hl(conn, object_type);
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ncp_add_pstring(conn, object_name);
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if ((error = ncp_request(connid, 23, conn)) != 0) {
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return error;
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}
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if (conn->rpsize < 54) {
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return EACCES;
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}
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target->object_id = ncp_reply_dword_hl(conn, 0);
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target->object_type = ncp_reply_word_hl(conn, 4);
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memcpy(target->object_name, ncp_reply_data(conn, 6), 48);
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return 0;
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}
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int
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ncp_read_property_value(NWCONN_HANDLE connid, int object_type,
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const char *object_name, int segment, const char *prop_name,
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struct nw_property *target)
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{
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int error;
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struct ncp_buf conn;
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ncp_init_request_s(&conn, 61);
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ncp_add_word_hl(&conn, object_type);
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ncp_add_pstring(&conn, object_name);
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ncp_add_byte(&conn, segment);
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ncp_add_pstring(&conn, prop_name);
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if ((error = ncp_request(connid,23,&conn)) != 0) {
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return error;
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}
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memcpy(&(target->value), ncp_reply_data(&conn, 0), 128);
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target->more_flag = ncp_reply_byte(&conn, 128);
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target->property_flag = ncp_reply_byte(&conn, 129);
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return 0;
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}
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int
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ncp_scan_bindery_object(NWCONN_HANDLE connid, u_int32_t last_id,
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u_int16_t object_type, char *search_string,
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struct ncp_bindery_object *target)
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{
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int error;
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DECLARE_RQ;
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ncp_init_request_s(conn, 55);
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ncp_add_dword_hl(conn, last_id);
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ncp_add_word_hl(conn, object_type);
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ncp_add_pstring(conn, search_string);
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error = ncp_request(connid, 23, conn);
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if (error) return error;
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target->object_id = ncp_reply_dword_hl(conn, 0);
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target->object_type = ncp_reply_word_hl(conn, 4);
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memcpy(target->object_name, ncp_reply_data(conn, 6),NCP_BINDERY_NAME_LEN);
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target->object_flags = ncp_reply_byte(conn, 54);
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target->object_security = ncp_reply_byte(conn, 55);
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target->object_has_prop = ncp_reply_byte(conn, 56);
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return 0;
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}
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int
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ncp_get_bindery_object_name(NWCONN_HANDLE connid, u_int32_t object_id,
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struct ncp_bindery_object *target)
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{
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int error;
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DECLARE_RQ;
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ncp_init_request_s(conn, 54);
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ncp_add_dword_hl(conn, object_id);
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if ((error = ncp_request(connid, 23, conn)) != 0)
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return error;
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target->object_id = ncp_reply_dword_hl(conn, 0);
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target->object_type = ncp_reply_word_hl(conn, 4);
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memcpy(target->object_name, ncp_reply_data(conn, 6), 48);
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return 0;
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}
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int
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ncp_change_obj_passwd(NWCONN_HANDLE connid,
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const struct ncp_bindery_object *object,
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const u_char *key,
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const u_char *oldpasswd,
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const u_char *newpasswd)
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{
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long id = htonl(object->object_id);
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u_char cryptkey[8];
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u_char newpwd[16]; /* new passwd as stored by server */
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u_char oldpwd[16]; /* old passwd as stored by server */
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u_char len;
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DECLARE_RQ;
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memcpy(cryptkey, key, 8);
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nw_keyhash((u_char *)&id, oldpasswd, strlen(oldpasswd), oldpwd);
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nw_keyhash((u_char *)&id, newpasswd, strlen(newpasswd), newpwd);
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nw_encrypt(cryptkey, oldpwd, cryptkey);
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nw_passencrypt(oldpwd, newpwd, newpwd);
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nw_passencrypt(oldpwd + 8, newpwd + 8, newpwd + 8);
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if ((len = strlen(newpasswd)) > 63) {
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len = 63;
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}
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len = ((len ^ oldpwd[0] ^ oldpwd[1]) & 0x7f) | 0x40;
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ncp_init_request_s(conn, 75);
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ncp_add_mem(conn, cryptkey, 8);
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ncp_add_word_hl(conn, object->object_type);
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ncp_add_pstring(conn, object->object_name);
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ncp_add_byte(conn, len);
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ncp_add_mem(conn, newpwd, 16);
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return ncp_request(connid, 23, conn);
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}
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/*
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* target is a 8-byte buffer
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*/
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int
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ncp_get_encryption_key(NWCONN_HANDLE cH, char *target) {
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int error;
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DECLARE_RQ;
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ncp_init_request_s(conn, 23);
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error = ncp_request(cH, 23, conn);
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if (error)
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return error;
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if (conn->rpsize < 8)
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return EACCES;
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memcpy(target, ncp_reply_data(conn, 0), 8);
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return 0;
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}
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int
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ncp_keyed_verify_password(NWCONN_HANDLE cH, char *key, char *passwd,
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struct ncp_bindery_object *objinfo)
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{
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u_long id = htonl(objinfo->object_id);
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u_char cryptkey[8];
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u_char buf[128];
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DECLARE_RQ;
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nw_keyhash((u_char *)&id, passwd, strlen(passwd), buf);
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nw_encrypt(key, buf, cryptkey);
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ncp_init_request_s(conn, 74);
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ncp_add_mem(conn, cryptkey, sizeof(cryptkey));
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ncp_add_word_hl(conn, objinfo->object_type);
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ncp_add_pstring(conn, objinfo->object_name);
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return ncp_request(cH, 23, conn);
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}
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static char passkeys[256 + 16] = {
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0x0f, 0x08, 0x05, 0x07, 0x0c, 0x02, 0x0e, 0x09,
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0x00, 0x01, 0x06, 0x0d, 0x03, 0x04, 0x0b, 0x0a,
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0x02, 0x0c, 0x0e, 0x06, 0x0f, 0x00, 0x01, 0x08,
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0x0d, 0x03, 0x0a, 0x04, 0x09, 0x0b, 0x05, 0x07,
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0x05, 0x02, 0x09, 0x0f, 0x0c, 0x04, 0x0d, 0x00,
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0x0e, 0x0a, 0x06, 0x08, 0x0b, 0x01, 0x03, 0x07,
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0x0f, 0x0d, 0x02, 0x06, 0x07, 0x08, 0x05, 0x09,
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0x00, 0x04, 0x0c, 0x03, 0x01, 0x0a, 0x0b, 0x0e,
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0x05, 0x0e, 0x02, 0x0b, 0x0d, 0x0a, 0x07, 0x00,
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0x08, 0x06, 0x04, 0x01, 0x0f, 0x0c, 0x03, 0x09,
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0x08, 0x02, 0x0f, 0x0a, 0x05, 0x09, 0x06, 0x0c,
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0x00, 0x0b, 0x01, 0x0d, 0x07, 0x03, 0x04, 0x0e,
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0x0e, 0x08, 0x00, 0x09, 0x04, 0x0b, 0x02, 0x07,
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0x0c, 0x03, 0x0a, 0x05, 0x0d, 0x01, 0x06, 0x0f,
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0x01, 0x04, 0x08, 0x0a, 0x0d, 0x0b, 0x07, 0x0e,
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0x05, 0x0f, 0x03, 0x09, 0x00, 0x02, 0x06, 0x0c,
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0x05, 0x03, 0x0c, 0x08, 0x0b, 0x02, 0x0e, 0x0a,
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0x04, 0x01, 0x0d, 0x00, 0x06, 0x07, 0x0f, 0x09,
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0x06, 0x00, 0x0b, 0x0e, 0x0d, 0x04, 0x0c, 0x0f,
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0x07, 0x02, 0x08, 0x0a, 0x01, 0x05, 0x03, 0x09,
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0x0b, 0x05, 0x0a, 0x0e, 0x0f, 0x01, 0x0c, 0x00,
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0x06, 0x04, 0x02, 0x09, 0x03, 0x0d, 0x07, 0x08,
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0x07, 0x02, 0x0a, 0x00, 0x0e, 0x08, 0x0f, 0x04,
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0x0c, 0x0b, 0x09, 0x01, 0x05, 0x0d, 0x03, 0x06,
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0x07, 0x04, 0x0f, 0x09, 0x05, 0x01, 0x0c, 0x0b,
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0x00, 0x03, 0x08, 0x0e, 0x02, 0x0a, 0x06, 0x0d,
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0x09, 0x04, 0x08, 0x00, 0x0a, 0x03, 0x01, 0x0c,
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0x05, 0x0f, 0x07, 0x02, 0x0b, 0x0e, 0x06, 0x0d,
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0x09, 0x05, 0x04, 0x07, 0x0e, 0x08, 0x03, 0x01,
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0x0d, 0x0b, 0x0c, 0x02, 0x00, 0x0f, 0x06, 0x0a,
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0x09, 0x0a, 0x0b, 0x0d, 0x05, 0x03, 0x0f, 0x00,
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0x01, 0x0c, 0x08, 0x07, 0x06, 0x04, 0x0e, 0x02,
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0x03, 0x0e, 0x0f, 0x02, 0x0d, 0x0c, 0x04, 0x05,
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0x09, 0x06, 0x00, 0x01, 0x0b, 0x07, 0x0a, 0x08
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};
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static void
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nw_passencrypt(char *old, char *new, char *out)
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{
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char *p, v;
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char copy[8];
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int i, di, ax;
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#define HIGH(x) (((x) >> 4) & 0xf)
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#define LOW(x) ((x) & 0xf)
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memcpy(copy, new, 8);
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for (i = 0; i < 16; i++) {
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for (di = 0, ax = 0, p = old; di < 8; di++, ax += 0x20, p++) {
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v = copy[di] ^ *p;
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copy[di] = (passkeys[HIGH(v) + ax + 0x10] << 4) |
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passkeys[LOW(v) + ax];
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}
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v = old[7];
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for (p = old + 7; p > old; p--) {
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*p = HIGH(p[-1]) | ((*p) << 4);
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}
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*old = HIGH(v) | (*old) << 4;
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bzero(out, 8);
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for (di = 0; di < 16; di++) {
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v = passkeys[di + 0x100];
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v = (v & 1) ? HIGH(copy[v / 2]) : LOW(copy[v / 2]);
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out[di / 2] |= ((di & 1) ? v << 4 : v);
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}
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memcpy(copy, out, 8);
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}
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}
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