/* * 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/sys/netncp/ncp_login.c,v 1.2 1999/10/12 10:36:59 bp Exp $ * $DragonFly: src/sys/netproto/ncp/ncp_login.c,v 1.2 2003/06/17 04:28:53 dillon Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include static int ncp_login_encrypted(struct ncp_conn *conn, struct ncp_bindery_object *object, unsigned char *key, unsigned char *passwd, struct proc *p, struct ucred *cred); static int ncp_login_unencrypted(struct ncp_conn *conn, u_int16_t object_type, char *object_name, unsigned char *passwd, struct proc *p, struct ucred *cred); static int ncp_sign_start(struct ncp_conn *conn, char *logindata); static int ncp_get_encryption_key(struct ncp_conn *conn, char *target); /* * Initialize packet signatures. They a slightly modified MD4. * The first 16 bytes of logindata are the shuffled password, * the last 8 bytes the encryption key as received from the server. */ int ncp_sign_start(struct ncp_conn *conn, char *logindata) { char msg[64]; u_int32_t state[4]; memcpy(msg, logindata, 24); memcpy(msg + 24, "Authorized NetWare Client", 25); bzero(msg + 24 + 25, sizeof(msg) - 24 - 25); conn->sign_state[0] = 0x67452301; conn->sign_state[1] = 0xefcdab89; conn->sign_state[2] = 0x98badcfe; conn->sign_state[3] = 0x10325476; ncp_sign(conn->sign_state, msg, state); conn->sign_root[0] = state[0]; conn->sign_root[1] = state[1]; conn->flags |= NCPFL_SIGNACTIVE; return 0; } /* * target is a 8-byte buffer */ int ncp_get_encryption_key(struct ncp_conn *conn, char *target) { int error; DECLARE_RQ; NCP_RQ_HEAD_S(23,23,conn->procp,conn->ucred); checkbad(ncp_request(conn,rqp)); if (rqp->rpsize < 8) { NCPFATAL("rpsize=%d < 8\n", rqp->rpsize); return EIO; } ncp_rp_mem(rqp, target, 8); NCP_RQ_EXIT; return error; } int ncp_login_object(struct ncp_conn *conn, unsigned char *username, int login_type, unsigned char *password, struct proc *p,struct ucred *cred) { int error; unsigned char ncp_key[8]; struct ncp_bindery_object user; if ((error = ncp_get_encryption_key(conn, ncp_key)) != 0) { printf("%s: Warning: use unencrypted login\n", __FUNCTION__); return ncp_login_unencrypted(conn, login_type, username, password,p,cred); } if ((error = ncp_get_bindery_object_id(conn, login_type, username, &user,p,cred)) != 0) { return error; } error = ncp_login_encrypted(conn, &user, ncp_key, password,p,cred); return error; } int ncp_login_encrypted(struct ncp_conn *conn, struct ncp_bindery_object *object, unsigned char *key, unsigned char *passwd, struct proc *p,struct ucred *cred) { u_int32_t tmpID = htonl(object->object_id); u_char buf[16 + 8]; u_char encrypted[8]; int error; DECLARE_RQ; nw_keyhash((u_char*)&tmpID, passwd, strlen(passwd), buf); nw_encrypt(key, buf, encrypted); NCP_RQ_HEAD_S(23,24,p,cred); ncp_rq_mem(rqp, encrypted, 8); ncp_rq_word_hl(rqp, object->object_type); ncp_rq_pstring(rqp, object->object_name); error = ncp_request(conn, rqp); NCP_RQ_EXIT_NB; if (conn->flags & NCPFL_SIGNWANTED) { if (error == 0 || error == NWE_PASSWORD_EXPIRED) { memcpy(buf + 16, key, 8); error = ncp_sign_start(conn, buf); } } return error; } int ncp_login_unencrypted(struct ncp_conn *conn, u_int16_t object_type, char *object_name, unsigned char *passwd, struct proc *p, struct ucred *cred) { int error; DECLARE_RQ; NCP_RQ_HEAD_S(23,20,conn->procp,conn->ucred); ncp_rq_word_hl(rqp, object_type); ncp_rq_pstring(rqp, object_name); ncp_rq_pstring(rqp, passwd); error = ncp_request(conn,rqp); NCP_RQ_EXIT_NB; return error; } /* * Login to specified server with username and password. * conn should be locked. */ int ncp_login(struct ncp_conn *conn, char *user, int objtype, char *password, struct proc *p, struct ucred *cred) { int error; if (ncp_suser(cred) != 0 && cred->cr_uid != conn->nc_owner->cr_uid) return EACCES; if (conn->flags & NCPFL_LOGGED) return EALREADY; if ((conn->flags & NCPFL_ATTACHED) == 0) return ENOTCONN; conn->li.user = ncp_str_dup(user); conn->li.password = ncp_str_dup(password); if (conn->li.user == NULL || conn->li.password == NULL) { error = EINVAL; goto bad; } ncp_str_upper(conn->li.user); if ((conn->li.opt & NCP_OPT_NOUPCASEPASS) == 0) ncp_str_upper(conn->li.password); checkbad(ncp_login_object(conn, conn->li.user, objtype, conn->li.password,p,cred)); conn->li.objtype = objtype; conn->flags |= NCPFL_LOGGED; return 0; bad: if (conn->li.user) free(conn->li.user, M_NCPDATA); if (conn->li.password) free(conn->li.password, M_NCPDATA); conn->li.user = conn->li.password = NULL; return error; }