sync with glibc

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;
+}