--- /dev/null
+#ifndef lint
+static char sfs_auth_unix_c_id[] = "@(#)auth_unix.c 2.1 97/10/23";
+#endif
+/* @(#)auth_unix.c 2.2 88/08/01 4.0 RPCSRC */
+/*
+ * Copyright (c) 1992-1997,2001 by Standard Performance Evaluation Corporation
+ * All rights reserved.
+ * Standard Performance Evaluation Corporation (SPEC)
+ * 6585 Merchant Place, Suite 100
+ * Warrenton, VA 20187
+ *
+ * This product contains benchmarks acquired from several sources who
+ * understand and agree with SPEC's goal of creating fair and objective
+ * benchmarks to measure computer performance.
+ *
+ * This copyright notice is placed here only to protect SPEC in the
+ * event the source is misused in any manner that is contrary to the
+ * spirit, the goals and the intent of SPEC.
+ *
+ * The source code is provided to the user or company under the license
+ * agreement for the SPEC Benchmark Suite for this product.
+ */
+/*
+ * 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
+ */
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)auth_unix.c 1.19 87/08/11 Copyr 1984 Sun Micro";
+#endif
+
+/*
+ * auth_unix.c, Implements UNIX style authentication parameters.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * The system is very weak. The client uses no encryption for it's
+ * credentials and only sends null verifiers. The server sends backs
+ * null verifiers or optionally a verifier that suggests a new short hand
+ * for the credentials.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <netdb.h>
+
+#include "rpc/rpc.h"
+
+extern getmyhostname(char *, int);
+
+/*
+ * Unix authenticator operations vector
+ */
+static void authunix_nextverf(AUTH *);
+static bool_t authunix_marshal(AUTH *, XDR *);
+static bool_t authunix_validate(AUTH *, struct opaque_auth);
+static bool_t authunix_refresh(AUTH *);
+static void authunix_destroy(AUTH *);
+
+static struct auth_ops auth_unix_ops = {
+ authunix_nextverf,
+ authunix_marshal,
+ authunix_validate,
+ authunix_refresh,
+ authunix_destroy
+};
+
+/*
+ * This struct is pointed to by the ah_private field of an auth_handle.
+ */
+struct audata {
+ struct opaque_auth au_origcred; /* original credentials */
+ struct opaque_auth au_shcred; /* short hand cred */
+ uint32_t au_shfaults; /* short hand cache faults */
+ char au_marshed[MAX_AUTH_BYTES];
+ uint_t au_mpos; /* xdr pos at end of marshed */
+};
+#define AUTH_PRIVATE(auth) ((struct audata *)auth->ah_private)
+
+static bool_t marshal_new_auth(AUTH *);
+
+
+/*
+ * Create a unix style authenticator.
+ * Returns an auth handle with the given stuff in it.
+ */
+AUTH *
+authunix_create(
+ char *machname,
+ uid_t uid,
+ gid_t gid,
+ int len,
+ gid_t *aup_gids)
+{
+ struct authunix_parms aup;
+ char mymem[MAX_AUTH_BYTES];
+ struct timeval now;
+ XDR xdrs;
+ register AUTH *auth;
+ register struct audata *au;
+
+ /*
+ * Allocate and set up auth handle
+ */
+ auth = (AUTH *)mem_alloc(sizeof(AUTH));
+#ifndef KERNEL
+ if (auth == NULL) {
+ (void)fprintf(stderr, "authunix_create: out of memory\n");
+ return (NULL);
+ }
+#endif
+ au = (struct audata *)mem_alloc(sizeof(struct audata));
+#ifndef KERNEL
+ if (au == NULL) {
+ (void)fprintf(stderr, "authunix_create: out of memory\n");
+ return (NULL);
+ }
+#endif
+ auth->ah_ops = &auth_unix_ops;
+ auth->ah_private = (void *)au;
+ auth->ah_verf = au->au_shcred = _null_auth;
+ au->au_shfaults = 0;
+
+ /*
+ * fill in param struct from the given params
+ */
+ (void)gettimeofday(&now, (struct timezone *)0);
+ aup.aup_time = now.tv_sec;
+ aup.aup_machname = machname;
+ aup.aup_uid = uid;
+ aup.aup_gid = gid;
+ aup.aup_len = (uint_t)len;
+ aup.aup_gids = (int *)aup_gids;
+
+ /*
+ * Serialize the parameters into origcred
+ */
+ xdrmem_create(&xdrs, mymem, MAX_AUTH_BYTES, XDR_ENCODE);
+ if (! xdr_authunix_parms(&xdrs, &aup))
+ abort();
+ au->au_origcred.oa_length = len = XDR_GETPOS(&xdrs);
+ au->au_origcred.oa_flavor = AUTH_UNIX;
+#ifdef KERNEL
+ au->au_origcred.oa_base = mem_alloc((uint_t) len);
+#else
+ if ((au->au_origcred.oa_base = mem_alloc((uint_t) len)) == NULL) {
+ (void)fprintf(stderr, "authunix_create: out of memory\n");
+ return (NULL);
+ }
+#endif
+ memmove(au->au_origcred.oa_base, mymem, (uint_t)len);
+
+ /*
+ * set auth handle to reflect new cred.
+ */
+ auth->ah_cred = au->au_origcred;
+ marshal_new_auth(auth);
+ return (auth);
+}
+
+/*
+ * Returns an auth handle with parameters determined by doing lots of
+ * syscalls.
+ */
+AUTH *
+authunix_create_default(void)
+{
+ register int len;
+ char machname[MAX_MACHINE_NAME + 1];
+ uid_t uid;
+ gid_t gid;
+ gid_t gids[NGRPS];
+
+ if (getmyhostname(machname, MAX_MACHINE_NAME) == -1)
+ abort();
+ machname[MAX_MACHINE_NAME] = 0;
+ uid = geteuid();
+ gid = getegid();
+ if ((len = getgroups(NGRPS, gids)) < 0)
+ abort();
+ return (authunix_create(machname, uid, gid, len, gids));
+}
+
+/*
+ * authunix operations
+ */
+
+/* ARGSUSED */
+static void
+authunix_nextverf(
+ AUTH *auth)
+{
+ /* no action necessary */
+}
+
+static bool_t
+authunix_marshal(
+ AUTH *auth,
+ XDR *xdrs)
+{
+ register struct audata *au = AUTH_PRIVATE(auth);
+
+ return (XDR_PUTBYTES(xdrs, au->au_marshed, au->au_mpos));
+}
+
+static bool_t
+authunix_validate(
+ AUTH *auth,
+ struct opaque_auth verf)
+{
+ register struct audata *au;
+ XDR xdrs;
+
+ if (verf.oa_flavor == AUTH_SHORT) {
+ au = AUTH_PRIVATE(auth);
+ xdrmem_create(&xdrs, verf.oa_base, verf.oa_length, XDR_DECODE);
+
+ if (au->au_shcred.oa_base != NULL) {
+ mem_free(au->au_shcred.oa_base,
+ au->au_shcred.oa_length);
+ au->au_shcred.oa_base = NULL;
+ }
+ if (xdr_opaque_auth(&xdrs, &au->au_shcred)) {
+ auth->ah_cred = au->au_shcred;
+ } else {
+ xdrs.x_op = XDR_FREE;
+ (void)xdr_opaque_auth(&xdrs, &au->au_shcred);
+ au->au_shcred.oa_base = NULL;
+ auth->ah_cred = au->au_origcred;
+ }
+ marshal_new_auth(auth);
+ }
+ return (TRUE);
+}
+
+static bool_t
+authunix_refresh(
+ AUTH *auth)
+{
+ register struct audata *au = AUTH_PRIVATE(auth);
+ struct authunix_parms aup;
+ struct timeval now;
+ XDR xdrs;
+ register int stat;
+
+ if (auth->ah_cred.oa_base == au->au_origcred.oa_base) {
+ /* there is no hope. Punt */
+ return (FALSE);
+ }
+ au->au_shfaults ++;
+
+ /* first deserialize the creds back into a struct authunix_parms */
+ aup.aup_machname = NULL;
+ aup.aup_gids = (int *)NULL;
+ xdrmem_create(&xdrs, au->au_origcred.oa_base,
+ au->au_origcred.oa_length, XDR_DECODE);
+ stat = xdr_authunix_parms(&xdrs, &aup);
+ if (! stat)
+ goto done;
+
+ /* update the time and serialize in place */
+ (void)gettimeofday(&now, (struct timezone *)0);
+ aup.aup_time = now.tv_sec;
+ xdrs.x_op = XDR_ENCODE;
+ XDR_SETPOS(&xdrs, 0);
+ stat = xdr_authunix_parms(&xdrs, &aup);
+ if (! stat)
+ goto done;
+ auth->ah_cred = au->au_origcred;
+ marshal_new_auth(auth);
+done:
+ /* free the struct authunix_parms created by deserializing */
+ xdrs.x_op = XDR_FREE;
+ (void)xdr_authunix_parms(&xdrs, &aup);
+ XDR_DESTROY(&xdrs);
+ return (stat);
+}
+
+static void
+authunix_destroy(
+ AUTH *auth)
+{
+ register struct audata *au = AUTH_PRIVATE(auth);
+
+ mem_free(au->au_origcred.oa_base, au->au_origcred.oa_length);
+
+ if (au->au_shcred.oa_base != NULL)
+ mem_free(au->au_shcred.oa_base, au->au_shcred.oa_length);
+
+ mem_free(auth->ah_private, sizeof(struct audata));
+
+ if (auth->ah_verf.oa_base != NULL)
+ mem_free(auth->ah_verf.oa_base, auth->ah_verf.oa_length);
+
+ mem_free((void *)auth, sizeof(AUTH));
+}
+
+/*
+ * Marshals (pre-serializes) an auth struct.
+ * sets private data, au_marshed and au_mpos
+ */
+static bool_t
+marshal_new_auth(
+ AUTH *auth)
+{
+ XDR xdr_stream;
+ register XDR *xdrs = &xdr_stream;
+ register struct audata *au = AUTH_PRIVATE(auth);
+
+ xdrmem_create(xdrs, au->au_marshed, MAX_AUTH_BYTES, XDR_ENCODE);
+ if ((! xdr_opaque_auth(xdrs, &(auth->ah_cred))) ||
+ (! xdr_opaque_auth(xdrs, &(auth->ah_verf)))) {
+ perror("auth_none.c - Fatal marshalling problem");
+ } else {
+ au->au_mpos = XDR_GETPOS(xdrs);
+ }
+ XDR_DESTROY(xdrs);
+ return (TRUE);
+}
projects / bluesky.git / blobdiff