diff options
Diffstat (limited to 'libc/inet/rpc/svc_authux.c')
| -rw-r--r-- | libc/inet/rpc/svc_authux.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/libc/inet/rpc/svc_authux.c b/libc/inet/rpc/svc_authux.c new file mode 100644 index 000000000..3afcfc5d4 --- /dev/null +++ b/libc/inet/rpc/svc_authux.c @@ -0,0 +1,161 @@ +/* + * Sun RPC is a product of Sun Microsystems, Inc. and is provided for + * unrestricted use provided that this legend is included on all tape + * media and as a part of the software program in whole or part. Users + * may copy or modify Sun RPC without charge, but are not authorized + * to license or distribute it to anyone else except as part of a product or + * program developed by the user. + * + * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE + * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR + * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. + * + * Sun RPC is provided with no support and without any obligation on the + * part of Sun Microsystems, Inc. to assist in its use, correction, + * modification or enhancement. + * + * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE + * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC + * OR ANY PART THEREOF. + * + * In no event will Sun Microsystems, Inc. be liable for any lost revenue + * or profits or other special, indirect and consequential damages, even if + * Sun has been advised of the possibility of such damages. + * + * Sun Microsystems, Inc. + * 2550 Garcia Avenue + * Mountain View, California 94043 + */ + +/* + * svc_auth_unix.c + * Handles UNIX flavor authentication parameters on the service side of rpc. + * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT. + * _svcauth_unix does full blown unix style uid,gid+gids auth, + * _svcauth_short uses a shorthand auth to index into a cache of longhand auths. + * Note: the shorthand has been gutted for efficiency. + * + * Copyright (C) 1984, Sun Microsystems, Inc. + */ + +#define __FORCE_GLIBC +#include <features.h> + +#include <stdio.h> +#include <string.h> +#include <rpc/rpc.h> +#include <rpc/svc.h> + +libc_hidden_proto(memcpy) +libc_hidden_proto(printf) +libc_hidden_proto(xdrmem_create) +libc_hidden_proto(xdr_authunix_parms) + +/* + * Unix longhand authenticator + */ +attribute_hidden +enum auth_stat +_svcauth_unix (struct svc_req *rqst, struct rpc_msg *msg) +{ + enum auth_stat stat; + XDR xdrs; + struct authunix_parms *aup; + int32_t *buf; + struct area + { + struct authunix_parms area_aup; + char area_machname[MAX_MACHINE_NAME + 1]; + gid_t area_gids[NGRPS]; + } + *area; + u_int auth_len; + u_int str_len, gid_len; + u_int i; + + area = (struct area *) rqst->rq_clntcred; + aup = &area->area_aup; + aup->aup_machname = area->area_machname; + aup->aup_gids = area->area_gids; + auth_len = (u_int) msg->rm_call.cb_cred.oa_length; + xdrmem_create (&xdrs, msg->rm_call.cb_cred.oa_base, auth_len, XDR_DECODE); + buf = XDR_INLINE (&xdrs, auth_len); + if (buf != NULL) + { + aup->aup_time = IXDR_GET_LONG (buf); + str_len = IXDR_GET_U_INT32 (buf); + if (str_len > MAX_MACHINE_NAME) + { + stat = AUTH_BADCRED; + goto done; + } + memcpy (aup->aup_machname, (caddr_t) buf, (u_int) str_len); + aup->aup_machname[str_len] = 0; + str_len = RNDUP (str_len); + buf = (int32_t *) ((char *) buf + str_len); + aup->aup_uid = IXDR_GET_LONG (buf); + aup->aup_gid = IXDR_GET_LONG (buf); + gid_len = IXDR_GET_U_INT32 (buf); + if (gid_len > NGRPS) + { + stat = AUTH_BADCRED; + goto done; + } + aup->aup_len = gid_len; + for (i = 0; i < gid_len; i++) + { + aup->aup_gids[i] = IXDR_GET_LONG (buf); + } + /* + * five is the smallest unix credentials structure - + * timestamp, hostname len (0), uid, gid, and gids len (0). + */ + if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) + { + (void) printf ("bad auth_len gid %d str %d auth %d\n", + gid_len, str_len, auth_len); + stat = AUTH_BADCRED; + goto done; + } + } + else if (!xdr_authunix_parms (&xdrs, aup)) + { + xdrs.x_op = XDR_FREE; + (void) xdr_authunix_parms (&xdrs, aup); + stat = AUTH_BADCRED; + goto done; + } + + /* get the verifier */ + if ((u_int)msg->rm_call.cb_verf.oa_length) + { + rqst->rq_xprt->xp_verf.oa_flavor = + msg->rm_call.cb_verf.oa_flavor; + rqst->rq_xprt->xp_verf.oa_base = + msg->rm_call.cb_verf.oa_base; + rqst->rq_xprt->xp_verf.oa_length = + msg->rm_call.cb_verf.oa_length; + } + else + { + rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL; + rqst->rq_xprt->xp_verf.oa_length = 0; + } + stat = AUTH_OK; +done: + XDR_DESTROY (&xdrs); + return stat; +} + + +/* + * Shorthand unix authenticator + * Looks up longhand in a cache. + */ +/*ARGSUSED */ +attribute_hidden +enum auth_stat +_svcauth_short (struct svc_req *rqst attribute_unused, struct rpc_msg *msg attribute_unused) +{ + return AUTH_REJECTEDCRED; +} |