Update. cvs/libc-ud-970829

1997-08-29 21:45  Ulrich Drepper  <drepper@cygnus.com>

	* sunrpc/auth_des.c: New file.  Copied from former secure_rpc add-on.
	* sunrpc/authdes_prot.c: New file.  Likewise.
	* sunrpc/des.h: New file.  Likewise.
	* sunrpc/des_crypt.c: New file.  Likewise.
	* sunrpc/des_soft.c: New file.  Likewise.
	* sunrpc/key_call.c: New file.  Likewise.
	* sunrpc/key_prot.c: New file.  Likewise.
	* sunrpc/netname.c: New file.  Likewise.
	* sunrpc/openchild.c: New file.  Likewise.
	* sunrpc/rtime.c: New file.  Likewise.
	* sunrpc/svc_auth.c: New file.  Likewise.
	* sunrpc/svcauth_des.c: New file.  Likewise.
	* sunrpc/xcrypt.c: New file.  Likewise.
	* sunrpc/rpc/auth.h: New file.  Likewise.
	* sunrpc/rpc/auth_des.h: New file.  Likewise.
	* sunrpc/rpc/des_crypt.h: New file.  Likewise.
	* sunrpc/rpc/key_prot.h: New file.  Likewise.
	* sunrpc/rpcsvc/key_prot.x: New file.  Likewise.
	* sysdeps/generic/svc_auth.h: Removed.
	* sysdeps/generic/rpc/auth.h: Removed.
	* sysdeps/generic/rpc/auth_des.h: Removed.
	* sysdeps/stub/des_impl.c: New file.  Stub version for DES.
	* sunrpc/Makefile (rpcsvc): Add keyprot.x.
	(headers): Add des_crypt.h and key_prot.h.
	(routines): Add auth_des, authdes_prot, des_crypt, des_impl, des_soft,
	key_call, key_prot, netname, openchild, rtime, svcauth_des, xcrypt.
	(distribute): Add des.h.

	* db2/Makefile: Add all headers and other files to distribute.
	(others): Add db_printlog.

	* sysdeps/mach/hurd/Dist: Add net/* headers.
	* sysdeps/mach/hurd/mips/Dist: New file.
	* sysdeps/powerpc/Dist: Add fe_nomask.c and t_sqrt.c.
	* sysdeps/sparc/Dist: Add sys/trap.h.
	* sysdeps/sparc/sparc32/Dist: Remove sys/trap.h.
	* sysdeps/sparc/sparc32/sparcv8/Dist: New file.
	* sysdeps/unix/sysv/linux/mips/Dist: Add sgidefs.h.
	* sysdeps/unix/sysv/linux/sparc/Dist: Add sys/trap.h.
	* sysdeps/unix/sysv/linux/sparc/sparc32/Dist: Remove sys/trap.h.

	Add previously missing assembler files for PPC.
	* sysdeps/powerpc/add_n.s: New file.
	* sysdeps/powerpc/addmul_1.s: New file.
	* sysdeps/powerpc/lshift.s: New file.
	* sysdeps/powerpc/memset.s: New file.
	* sysdeps/powerpc/mul_1.s: New file.
	* sysdeps/powerpc/rshift.s: New file.
	* sysdeps/powerpc/strchr.s: New file.
	* sysdeps/powerpc/strcmp.s: New file.
	* sysdeps/powerpc/sub_n.s: New file.
	* sysdeps/powerpc/submul_1.s: New file.

1997-08-28 18:42  Thorsten Kukuk  <kukuk@uni-paderborn.de>

	* nis/nis_server.c: Rewritten to fix a lot of bugs.

1997-08-28  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* md5-crypt/Makefile (LDFLAGS-md5crypt.so, libmd5crypt-map): New
	variables.

	in NLSPATH environment variable.  Patch by HJ Lu <hjl@gnu.ai.mit.edu>.

1 files changed, 548 insertions, 0 deletions

diff --git a/sunrpc/svcauth_des.c b/sunrpc/svcauth_des.c
new file mode 100644
index 0000000000..3547830267
--- /dev/null
+++ b/sunrpc/svcauth_des.c
@@ -0,0 +1,548 @@
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)svcauth_des.c	2.3 89/07/11 4.0 RPCSRC; from 1.15 88/02/08 SMI";
+#endif
+
+/*
+ * Copyright (c) 1988 by Sun Microsystems, Inc.
+ */
+
+/*
+ * 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
+ */
+
+/*
+ * svcauth_des.c, server-side des authentication
+ *
+ * We insure for the service the following:
+ * (1) The timestamp microseconds do not exceed 1 million.
+ * (2) The timestamp plus the window is less than the current time.
+ * (3) The timestamp is not less than the one previously
+ *     seen in the current session.
+ *
+ * It is up to the server to determine if the window size is
+ * too small .
+ *
+ */
+
+#include <string.h>
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/auth.h>
+#include <rpc/auth_des.h>
+#include <rpc/svc_auth.h>
+#include <rpc/svc.h>
+#include <rpc/des_crypt.h>
+
+#define debug(msg)		/*printf("svcauth_des: %s\n", msg) */
+
+#define USEC_PER_SEC ((u_long) 1000000L)
+#define BEFORE(t1, t2) timercmp(t1, t2, <)
+
+/*
+ * LRU cache of conversation keys and some other useful items.
+ */
+#define AUTHDES_CACHESZ 64
+struct cache_entry
+  {
+    des_block key;		/* conversation key */
+    char *rname;		/* client's name */
+    u_int window;		/* credential lifetime window */
+    struct timeval laststamp;	/* detect replays of creds */
+    char *localcred;		/* generic local credential */
+  };
+static struct cache_entry *authdes_cache /* [AUTHDES_CACHESZ] */ ;
+static short *authdes_lru /* [AUTHDES_CACHESZ] */ ;
+
+static void cache_init (void);	/* initialize the cache */
+static short cache_spot (des_block *, char *, struct timeval *);
+					/* find an entry in the cache */
+static void cache_ref (short sid);	/* note that sid was ref'd */
+
+static void invalidate (char *cred);	/* invalidate entry in cache */
+
+/*
+ * cache statistics
+ */
+struct
+  {
+    u_long ncachehits;		/* times cache hit, and is not replay */
+    u_long ncachereplays;	/* times cache hit, and is replay */
+    u_long ncachemisses;	/* times cache missed */
+  }
+svcauthdes_stats;
+
+/*
+ * Service side authenticator for AUTH_DES
+ */
+enum auth_stat
+_svcauth_des (register struct svc_req *rqst, register struct rpc_msg *msg)
+{
+  register long *ixdr;
+  des_block cryptbuf[2];
+  register struct authdes_cred *cred;
+  struct authdes_verf verf;
+  int status;
+  register struct cache_entry *entry;
+  short sid = 0;
+  des_block *sessionkey;
+  des_block ivec;
+  u_int window;
+  struct timeval timestamp;
+  u_long namelen;
+  struct area
+    {
+      struct authdes_cred area_cred;
+      char area_netname[MAXNETNAMELEN + 1];
+    }
+   *area;
+
+  if (authdes_cache == NULL)
+    cache_init ();
+
+  area = (struct area *) rqst->rq_clntcred;
+  cred = (struct authdes_cred *) &area->area_cred;
+
+  /*
+   * Get the credential
+   */
+  ixdr = (long *) msg->rm_call.cb_cred.oa_base;
+  cred->adc_namekind = IXDR_GET_ENUM (ixdr, enum authdes_namekind);
+  switch (cred->adc_namekind)
+    {
+    case ADN_FULLNAME:
+      namelen = IXDR_GET_U_LONG (ixdr);
+      if (namelen > MAXNETNAMELEN)
+	{
+	  return AUTH_BADCRED;
+	}
+      cred->adc_fullname.name = area->area_netname;
+      bcopy ((char *) ixdr, cred->adc_fullname.name,
+	     (u_int) namelen);
+      cred->adc_fullname.name[namelen] = 0;
+      ixdr += (RNDUP (namelen) / BYTES_PER_XDR_UNIT);
+      cred->adc_fullname.key.key.high = (u_long) * ixdr++;
+      cred->adc_fullname.key.key.low = (u_long) * ixdr++;
+      cred->adc_fullname.window = (u_long) * ixdr++;
+      break;
+    case ADN_NICKNAME:
+      cred->adc_nickname = (u_long) * ixdr++;
+      break;
+    default:
+      return AUTH_BADCRED;
+    }
+
+  /*
+   * Get the verifier
+   */
+  ixdr = (long *) msg->rm_call.cb_verf.oa_base;
+  verf.adv_xtimestamp.key.high = (u_long) * ixdr++;
+  verf.adv_xtimestamp.key.low = (u_long) * ixdr++;
+  verf.adv_int_u = (u_long) * ixdr++;
+
+
+  /*
+   * Get the conversation key
+   */
+  if (cred->adc_namekind == ADN_FULLNAME)
+    {
+      sessionkey = &cred->adc_fullname.key;
+      if (key_decryptsession (cred->adc_fullname.name,
+			      sessionkey) < 0)
+	{
+	  debug ("decryptsessionkey");
+	  return AUTH_BADCRED;	/* key not found */
+	}
+    }
+  else
+    {				/* ADN_NICKNAME */
+      sid = (short) cred->adc_nickname;
+      if (sid >= AUTHDES_CACHESZ)
+	{
+	  debug ("bad nickname");
+	  return AUTH_BADCRED;	/* garbled credential */
+	}
+      sessionkey = &authdes_cache[sid].key;
+    }
+
+
+  /*
+   * Decrypt the timestamp
+   */
+  cryptbuf[0] = verf.adv_xtimestamp;
+  if (cred->adc_namekind == ADN_FULLNAME)
+    {
+      cryptbuf[1].key.high = cred->adc_fullname.window;
+      cryptbuf[1].key.low = verf.adv_winverf;
+      ivec.key.high = ivec.key.low = 0;
+      status = cbc_crypt ((char *) sessionkey, (char *) cryptbuf,
+			  2 * sizeof (des_block), DES_DECRYPT | DES_HW,
+			  (char *) &ivec);
+    }
+  else
+    {
+      status = ecb_crypt ((char *) sessionkey, (char *) cryptbuf,
+			  sizeof (des_block), DES_DECRYPT | DES_HW);
+    }
+  if (DES_FAILED (status))
+    {
+      debug ("decryption failure");
+      return AUTH_FAILED;	/* system error */
+    }
+
+  /*
+   * XDR the decrypted timestamp
+   */
+  ixdr = (long *) cryptbuf;
+  timestamp.tv_sec = IXDR_GET_LONG (ixdr);
+  timestamp.tv_usec = IXDR_GET_LONG (ixdr);
+
+  /*
+   * Check for valid credentials and verifiers.
+   * They could be invalid because the key was flushed
+   * out of the cache, and so a new session should begin.
+   * Be sure and send AUTH_REJECTED{CRED, VERF} if this is the case.
+   */
+  {
+    struct timeval current;
+    int nick;
+    u_int winverf;
+
+    if (cred->adc_namekind == ADN_FULLNAME)
+      {
+	window = IXDR_GET_U_LONG (ixdr);
+	winverf = IXDR_GET_U_LONG (ixdr);
+	if (winverf != window - 1)
+	  {
+	    debug ("window verifier mismatch");
+	    return AUTH_BADCRED;	/* garbled credential */
+	  }
+	sid = cache_spot (sessionkey, cred->adc_fullname.name,
+			  &timestamp);
+	if (sid < 0)
+	  {
+	    debug ("replayed credential");
+	    return AUTH_REJECTEDCRED;		/* replay */
+	  }
+	nick = 0;
+      }
+    else
+      {				/* ADN_NICKNAME */
+	window = authdes_cache[sid].window;
+	nick = 1;
+      }
+
+    if ((u_long) timestamp.tv_usec >= USEC_PER_SEC)
+      {
+	debug ("invalid usecs");
+	/* cached out (bad key), or garbled verifier */
+	return nick ? AUTH_REJECTEDVERF : AUTH_BADVERF;
+      }
+    if (nick && BEFORE (&timestamp,
+			&authdes_cache[sid].laststamp))
+      {
+	debug ("timestamp before last seen");
+	return (AUTH_REJECTEDVERF);	/* replay */
+      }
+    gettimeofday (&current, (struct timezone *) NULL);
+    current.tv_sec -= window;	/* allow for expiration */
+    if (!BEFORE (&current, &timestamp))
+      {
+	debug ("timestamp expired");
+	/* replay, or garbled credential */
+	return nick ? AUTH_REJECTEDVERF : AUTH_BADCRED;
+      }
+  }
+
+  /*
+   * Set up the reply verifier
+   */
+  verf.adv_nickname = (u_long) sid;
+
+  /*
+   * xdr the timestamp before encrypting
+   */
+  ixdr = (long *) cryptbuf;
+  IXDR_PUT_LONG (ixdr, timestamp.tv_sec - 1);
+  IXDR_PUT_LONG (ixdr, timestamp.tv_usec);
+
+  /*
+   * encrypt the timestamp
+   */
+  status = ecb_crypt ((char *) sessionkey, (char *) cryptbuf,
+		      sizeof (des_block), DES_ENCRYPT | DES_HW);
+  if (DES_FAILED (status))
+    {
+      debug ("encryption failure");
+      return AUTH_FAILED;	/* system error */
+    }
+  verf.adv_xtimestamp = cryptbuf[0];
+
+  /*
+   * Serialize the reply verifier, and update rqst
+   */
+  ixdr = (long *) msg->rm_call.cb_verf.oa_base;
+  *ixdr++ = (long) verf.adv_xtimestamp.key.high;
+  *ixdr++ = (long) verf.adv_xtimestamp.key.low;
+  *ixdr++ = (long) verf.adv_int_u;
+
+  rqst->rq_xprt->xp_verf.oa_flavor = AUTH_DES;
+  rqst->rq_xprt->xp_verf.oa_base = msg->rm_call.cb_verf.oa_base;
+  rqst->rq_xprt->xp_verf.oa_length =
+    (char *) ixdr - msg->rm_call.cb_verf.oa_base;
+
+  /*
+   * We succeeded, commit the data to the cache now and
+   * finish cooking the credential.
+   */
+  entry = &authdes_cache[sid];
+  entry->laststamp = timestamp;
+  cache_ref (sid);
+  if (cred->adc_namekind == ADN_FULLNAME)
+    {
+      cred->adc_fullname.window = window;
+      cred->adc_nickname = (u_long) sid;	/* save nickname */
+      if (entry->rname != NULL)
+	{
+	  mem_free (entry->rname, strlen (entry->rname) + 1);
+	}
+      entry->rname = mem_alloc ((u_int) strlen (cred->adc_fullname.name)
+				+ 1);
+      if (entry->rname != NULL)
+	{
+	  strcpy (entry->rname, cred->adc_fullname.name);
+	}
+      else
+	{
+	  debug ("out of memory");
+	}
+      entry->key = *sessionkey;
+      entry->window = window;
+      invalidate (entry->localcred);	/* mark any cached cred invalid */
+    }
+  else
+    {				/* ADN_NICKNAME */
+      /*
+       * nicknames are cooked into fullnames
+       */
+      cred->adc_namekind = ADN_FULLNAME;
+      cred->adc_fullname.name = entry->rname;
+      cred->adc_fullname.key = entry->key;
+      cred->adc_fullname.window = entry->window;
+    }
+  return AUTH_OK;		/* we made it! */
+}
+
+
+/*
+ * Initialize the cache
+ */
+static void
+cache_init (void)
+{
+  register int i;
+
+  authdes_cache = (struct cache_entry *)
+    mem_alloc (sizeof (struct cache_entry) * AUTHDES_CACHESZ);
+  bzero ((char *) authdes_cache,
+	 sizeof (struct cache_entry) * AUTHDES_CACHESZ);
+
+  authdes_lru = (short *) mem_alloc (sizeof (short) * AUTHDES_CACHESZ);
+  /*
+   * Initialize the lru list
+   */
+  for (i = 0; i < AUTHDES_CACHESZ; i++)
+    {
+      authdes_lru[i] = i;
+    }
+}
+
+
+/*
+ * Find the lru victim
+ */
+static short
+cache_victim (void)
+{
+  return (authdes_lru[AUTHDES_CACHESZ - 1]);
+}
+
+/*
+ * Note that sid was referenced
+ */
+static void
+cache_ref (register short sid)
+{
+  register int i;
+  register short curr;
+  register short prev;
+
+  prev = authdes_lru[0];
+  authdes_lru[0] = sid;
+  for (i = 1; prev != sid; i++)
+    {
+      curr = authdes_lru[i];
+      authdes_lru[i] = prev;
+      prev = curr;
+    }
+}
+
+
+/*
+ * Find a spot in the cache for a credential containing
+ * the items given.  Return -1 if a replay is detected, otherwise
+ * return the spot in the cache.
+ */
+static short
+cache_spot (register des_block * key, char *name, struct timeval *timestamp)
+{
+  register struct cache_entry *cp;
+  register int i;
+  register u_long hi;
+
+  hi = key->key.high;
+  for (cp = authdes_cache, i = 0; i < AUTHDES_CACHESZ; i++, cp++)
+    {
+      if (cp->key.key.high == hi &&
+	  cp->key.key.low == key->key.low &&
+	  cp->rname != NULL &&
+	  bcmp (cp->rname, name, strlen (name) + 1) == 0)
+	{
+	  if (BEFORE (timestamp, &cp->laststamp))
+	    {
+	      svcauthdes_stats.ncachereplays++;
+	      return -1;	/* replay */
+	    }
+	  svcauthdes_stats.ncachehits++;
+	  return i;		/* refresh */
+	}
+    }
+  svcauthdes_stats.ncachemisses++;
+  return cache_victim ();	/* new credential */
+}
+
+
+/*
+ * Local credential handling stuff.
+ * NOTE: bsd unix dependent.
+ * Other operating systems should put something else here.
+ */
+#define UNKNOWN 	-2	/* grouplen, if cached cred is unknown user */
+#define INVALID		-1	/* grouplen, if cache entry is invalid */
+
+struct bsdcred
+{
+  uid_t uid;			/* cached uid */
+  gid_t gid;			/* cached gid */
+  short grouplen;		/* length of cached groups */
+  gid_t groups[NGROUPS];	/* cached groups */
+};
+
+/*
+ * Map a des credential into a unix cred.
+ * We cache the credential here so the application does
+ * not have to make an rpc call every time to interpret
+ * the credential.
+ */
+int
+authdes_getucred (const struct authdes_cred *adc, uid_t * uid, gid_t * gid,
+		  short *grouplen, gid_t * groups)
+{
+  unsigned sid;
+  register int i;
+  uid_t i_uid;
+  gid_t i_gid;
+  int i_grouplen;
+  struct bsdcred *cred;
+
+  sid = adc->adc_nickname;
+  if (sid >= AUTHDES_CACHESZ)
+    {
+      debug ("invalid nickname");
+      return 0;
+    }
+  cred = (struct bsdcred *) authdes_cache[sid].localcred;
+  if (cred == NULL)
+    {
+      cred = (struct bsdcred *) mem_alloc (sizeof (struct bsdcred));
+      authdes_cache[sid].localcred = (char *) cred;
+      cred->grouplen = INVALID;
+    }
+  if (cred->grouplen == INVALID)
+    {
+      /*
+       * not in cache: lookup
+       */
+      if (!netname2user (adc->adc_fullname.name, &i_uid, &i_gid,
+			 &i_grouplen, groups))
+	{
+	  debug ("unknown netname");
+	  cred->grouplen = UNKNOWN;	/* mark as lookup up, but not found */
+	  return 0;
+	}
+      debug ("missed ucred cache");
+      *uid = cred->uid = i_uid;
+      *gid = cred->gid = i_gid;
+      *grouplen = cred->grouplen = i_grouplen;
+      for (i = i_grouplen - 1; i >= 0; i--)
+	{
+	  cred->groups[i] = groups[i];	/* int to short */
+	}
+      return 1;
+    }
+  else if (cred->grouplen == UNKNOWN)
+    {
+      /*
+       * Already lookup up, but no match found
+       */
+      return 0;
+    }
+
+  /*
+   * cached credentials
+   */
+  *uid = cred->uid;
+  *gid = cred->gid;
+  *grouplen = cred->grouplen;
+  for (i = cred->grouplen - 1; i >= 0; i--)
+    {
+      groups[i] = cred->groups[i];	/* short to int */
+    }
+  return 1;
+}
+
+static void
+invalidate (char *cred)
+{
+  if (cred == NULL)
+    {
+      return;
+    }
+  ((struct bsdcred *) cred)->grouplen = INVALID;
+}