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-rw-r--r--libc/inet/rpc/svc_udp.c567
1 files changed, 0 insertions, 567 deletions
diff --git a/libc/inet/rpc/svc_udp.c b/libc/inet/rpc/svc_udp.c
deleted file mode 100644
index 5b8a8d297..000000000
--- a/libc/inet/rpc/svc_udp.c
+++ /dev/null
@@ -1,567 +0,0 @@
-/* @(#)svc_udp.c 2.2 88/07/29 4.0 RPCSRC */
-/*
- * 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 0
-static char sccsid[] = "@(#)svc_udp.c 1.24 87/08/11 Copyr 1984 Sun Micro";
-#endif
-
-/*
- * svc_udp.c,
- * Server side for UDP/IP based RPC. (Does some caching in the hopes of
- * achieving execute-at-most-once semantics.)
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include "rpc_private.h"
-#include <sys/socket.h>
-#include <errno.h>
-
-#ifdef IP_PKTINFO
-#include <sys/uio.h>
-#endif
-
-#define rpc_buffer(xprt) ((xprt)->xp_p1)
-#ifndef MAX
-#define MAX(a, b) ((a > b) ? a : b)
-#endif
-
-static bool_t svcudp_recv (SVCXPRT *, struct rpc_msg *);
-static bool_t svcudp_reply (SVCXPRT *, struct rpc_msg *);
-static enum xprt_stat svcudp_stat (SVCXPRT *);
-static bool_t svcudp_getargs (SVCXPRT *, xdrproc_t, caddr_t);
-static bool_t svcudp_freeargs (SVCXPRT *, xdrproc_t, caddr_t);
-static void svcudp_destroy (SVCXPRT *);
-
-static const struct xp_ops svcudp_op =
-{
- svcudp_recv,
- svcudp_stat,
- svcudp_getargs,
- svcudp_reply,
- svcudp_freeargs,
- svcudp_destroy
-};
-
-static int cache_get (SVCXPRT *, struct rpc_msg *, char **replyp,
- u_long *replylenp);
-static void cache_set (SVCXPRT *xprt, u_long replylen);
-
-/*
- * kept in xprt->xp_p2
- */
-struct svcudp_data
- {
- u_int su_iosz; /* byte size of send.recv buffer */
- u_long su_xid; /* transaction id */
- XDR su_xdrs; /* XDR handle */
- char su_verfbody[MAX_AUTH_BYTES]; /* verifier body */
- char *su_cache; /* cached data, NULL if no cache */
- };
-#define su_data(xprt) ((struct svcudp_data *)(xprt->xp_p2))
-
-/*
- * Usage:
- * xprt = svcudp_create(sock);
- *
- * If sock<0 then a socket is created, else sock is used.
- * If the socket, sock is not bound to a port then svcudp_create
- * binds it to an arbitrary port. In any (successful) case,
- * xprt->xp_sock is the registered socket number and xprt->xp_port is the
- * associated port number.
- * Once *xprt is initialized, it is registered as a transporter;
- * see (svc.h, xprt_register).
- * The routines returns NULL if a problem occurred.
- */
-SVCXPRT *
-svcudp_bufcreate (int sock, u_int sendsz, u_int recvsz)
-{
- bool_t madesock = FALSE;
- SVCXPRT *xprt;
- struct svcudp_data *su;
- struct sockaddr_in addr;
- socklen_t len = sizeof (struct sockaddr_in);
- int pad;
- void *buf;
-
- if (sock == RPC_ANYSOCK)
- {
- if ((sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
- {
- perror ("svcudp_create: socket creation problem");
- return (SVCXPRT *) NULL;
- }
- madesock = TRUE;
- }
- memset ((char *) &addr, 0, sizeof (addr));
- addr.sin_family = AF_INET;
- if (bindresvport (sock, &addr))
- {
- addr.sin_port = 0;
- (void) bind (sock, (struct sockaddr *) &addr, len);
- }
- if (getsockname (sock, (struct sockaddr *) &addr, &len) != 0)
- {
- perror ("svcudp_create - cannot getsockname");
- if (madesock)
- (void) close (sock);
- return (SVCXPRT *) NULL;
- }
- xprt = (SVCXPRT *) mem_alloc (sizeof (SVCXPRT));
- su = (struct svcudp_data *) mem_alloc (sizeof (*su));
- buf = mem_alloc (((MAX (sendsz, recvsz) + 3) / 4) * 4);
- if (xprt == NULL || su == NULL || buf == NULL)
- {
- (void) fputs ("svcudp_create: out of memory\n", stderr);
- mem_free (xprt, sizeof (SVCXPRT));
- mem_free (su, sizeof (*su));
- mem_free (buf, ((MAX (sendsz, recvsz) + 3) / 4) * 4);
- return NULL;
- }
- su->su_iosz = ((MAX (sendsz, recvsz) + 3) / 4) * 4;
- rpc_buffer (xprt) = buf;
- xdrmem_create (&(su->su_xdrs), rpc_buffer (xprt), su->su_iosz, XDR_DECODE);
- su->su_cache = NULL;
- xprt->xp_p2 = (caddr_t) su;
- xprt->xp_verf.oa_base = su->su_verfbody;
- xprt->xp_ops = &svcudp_op;
- xprt->xp_port = ntohs (addr.sin_port);
- xprt->xp_sock = sock;
-
-#ifdef IP_PKTINFO
- if ((sizeof (struct iovec) + sizeof (struct msghdr)
- + sizeof(struct cmsghdr) + sizeof (struct in_pktinfo))
- > sizeof (xprt->xp_pad))
- {
- (void) fputs ("svcudp_create: xp_pad is too small for IP_PKTINFO\n",
- stderr);
- return NULL;
- }
- pad = 1;
- if (setsockopt (sock, SOL_IP, IP_PKTINFO, (void *) &pad,
- sizeof (pad)) == 0)
- /* Set the padding to all 1s. */
- pad = 0xff;
- else
-#endif
- /* Clear the padding. */
- pad = 0;
- memset (&xprt->xp_pad [0], pad, sizeof (xprt->xp_pad));
-
- xprt_register (xprt);
- return xprt;
-}
-libc_hidden_def(svcudp_bufcreate)
-
-SVCXPRT *
-svcudp_create (int sock)
-{
-
- return svcudp_bufcreate (sock, UDPMSGSIZE, UDPMSGSIZE);
-}
-libc_hidden_def(svcudp_create)
-
-static enum xprt_stat
-svcudp_stat (SVCXPRT *xprt attribute_unused)
-{
-
- return XPRT_IDLE;
-}
-
-static bool_t
-svcudp_recv (SVCXPRT *xprt, struct rpc_msg *msg)
-{
- struct svcudp_data *su = su_data (xprt);
- XDR *xdrs = &(su->su_xdrs);
- int rlen;
- char *reply;
- u_long replylen;
- socklen_t len;
-
- /* It is very tricky when you have IP aliases. We want to make sure
- that we are sending the packet from the IP address where the
- incoming packet is addressed to. H.J. */
-#ifdef IP_PKTINFO
- struct iovec *iovp;
- struct msghdr *mesgp;
-#endif
-
-again:
- /* FIXME -- should xp_addrlen be a size_t? */
- len = (socklen_t) sizeof(struct sockaddr_in);
-#ifdef IP_PKTINFO
- iovp = (struct iovec *) &xprt->xp_pad [0];
- mesgp = (struct msghdr *) &xprt->xp_pad [sizeof (struct iovec)];
- if (mesgp->msg_iovlen)
- {
- iovp->iov_base = rpc_buffer (xprt);
- iovp->iov_len = su->su_iosz;
- mesgp->msg_iov = iovp;
- mesgp->msg_iovlen = 1;
- mesgp->msg_name = &(xprt->xp_raddr);
- mesgp->msg_namelen = len;
- mesgp->msg_control = &xprt->xp_pad [sizeof (struct iovec)
- + sizeof (struct msghdr)];
- mesgp->msg_controllen = sizeof(xprt->xp_pad)
- - sizeof (struct iovec) - sizeof (struct msghdr);
- rlen = recvmsg (xprt->xp_sock, mesgp, 0);
- if (rlen >= 0)
- len = mesgp->msg_namelen;
- }
- else
-#endif
- rlen = recvfrom (xprt->xp_sock, rpc_buffer (xprt),
- (int) su->su_iosz, 0,
- (struct sockaddr *) &(xprt->xp_raddr), &len);
- xprt->xp_addrlen = len;
- if (rlen == -1 && errno == EINTR)
- goto again;
- if (rlen < 16) /* < 4 32-bit ints? */
- return FALSE;
- xdrs->x_op = XDR_DECODE;
- XDR_SETPOS (xdrs, 0);
- if (!xdr_callmsg (xdrs, msg))
- return FALSE;
- su->su_xid = msg->rm_xid;
- if (su->su_cache != NULL)
- {
- if (cache_get (xprt, msg, &reply, &replylen))
- {
-#ifdef IP_PKTINFO
- if (mesgp->msg_iovlen)
- {
- iovp->iov_base = reply;
- iovp->iov_len = replylen;
- (void) sendmsg (xprt->xp_sock, mesgp, 0);
- }
- else
-#endif
- (void) sendto (xprt->xp_sock, reply, (int) replylen, 0,
- (struct sockaddr *) &xprt->xp_raddr, len);
- return TRUE;
- }
- }
- return TRUE;
-}
-
-static bool_t
-svcudp_reply (SVCXPRT *xprt, struct rpc_msg *msg)
-{
- struct svcudp_data *su = su_data (xprt);
- XDR *xdrs = &(su->su_xdrs);
- int slen, sent;
- bool_t stat = FALSE;
-#ifdef IP_PKTINFO
- struct iovec *iovp;
- struct msghdr *mesgp;
-#endif
-
- xdrs->x_op = XDR_ENCODE;
- XDR_SETPOS (xdrs, 0);
- msg->rm_xid = su->su_xid;
- if (xdr_replymsg (xdrs, msg))
- {
- slen = (int) XDR_GETPOS (xdrs);
-#ifdef IP_PKTINFO
- mesgp = (struct msghdr *) &xprt->xp_pad [sizeof (struct iovec)];
- if (mesgp->msg_iovlen)
- {
- iovp = (struct iovec *) &xprt->xp_pad [0];
- iovp->iov_base = rpc_buffer (xprt);
- iovp->iov_len = slen;
- sent = sendmsg (xprt->xp_sock, mesgp, 0);
- }
- else
-#endif
- sent = sendto (xprt->xp_sock, rpc_buffer (xprt), slen, 0,
- (struct sockaddr *) &(xprt->xp_raddr),
- xprt->xp_addrlen);
- if (sent == slen)
- {
- stat = TRUE;
- if (su->su_cache && slen >= 0)
- {
- cache_set (xprt, (u_long) slen);
- }
- }
- }
- return stat;
-}
-
-static bool_t
-svcudp_getargs (SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr)
-{
-
- return (*xdr_args) (&(su_data (xprt)->su_xdrs), args_ptr);
-}
-
-static bool_t
-svcudp_freeargs (SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr)
-{
- XDR *xdrs = &(su_data (xprt)->su_xdrs);
-
- xdrs->x_op = XDR_FREE;
- return (*xdr_args) (xdrs, args_ptr);
-}
-
-static void
-svcudp_destroy (SVCXPRT *xprt)
-{
- struct svcudp_data *su = su_data (xprt);
-
- xprt_unregister (xprt);
- (void) close (xprt->xp_sock);
- XDR_DESTROY (&(su->su_xdrs));
- mem_free (rpc_buffer (xprt), su->su_iosz);
- mem_free ((caddr_t) su, sizeof (struct svcudp_data));
- mem_free ((caddr_t) xprt, sizeof (SVCXPRT));
-}
-
-
-/***********this could be a separate file*********************/
-
-/*
- * Fifo cache for udp server
- * Copies pointers to reply buffers into fifo cache
- * Buffers are sent again if retransmissions are detected.
- */
-
-#define SPARSENESS 4 /* 75% sparse */
-
-#define CACHE_PERROR(msg) \
- (void) fprintf(stderr,"%s\n", msg)
-
-#define ALLOC(type, size) \
- (type *) mem_alloc((unsigned) (sizeof(type) * (size)))
-
-#define BZERO(addr, type, size) \
- memset((char *) addr, 0, sizeof(type) * (int) (size))
-
-/*
- * An entry in the cache
- */
-typedef struct cache_node *cache_ptr;
-struct cache_node
- {
- /*
- * Index into cache is xid, proc, vers, prog and address
- */
- u_long cache_xid;
- u_long cache_proc;
- u_long cache_vers;
- u_long cache_prog;
- struct sockaddr_in cache_addr;
- /*
- * The cached reply and length
- */
- char *cache_reply;
- u_long cache_replylen;
- /*
- * Next node on the list, if there is a collision
- */
- cache_ptr cache_next;
- };
-
-
-
-/*
- * The entire cache
- */
-struct udp_cache
- {
- u_long uc_size; /* size of cache */
- cache_ptr *uc_entries; /* hash table of entries in cache */
- cache_ptr *uc_fifo; /* fifo list of entries in cache */
- u_long uc_nextvictim; /* points to next victim in fifo list */
- u_long uc_prog; /* saved program number */
- u_long uc_vers; /* saved version number */
- u_long uc_proc; /* saved procedure number */
- struct sockaddr_in uc_addr; /* saved caller's address */
- };
-
-
-/*
- * the hashing function
- */
-#define CACHE_LOC(transp, xid) \
- (xid % (SPARSENESS*((struct udp_cache *) su_data(transp)->su_cache)->uc_size))
-
-
-/*
- * Enable use of the cache.
- * Note: there is no disable.
- */
-int svcudp_enablecache (SVCXPRT *transp, u_long size);
-int
-svcudp_enablecache (SVCXPRT *transp, u_long size)
-{
- struct svcudp_data *su = su_data (transp);
- struct udp_cache *uc;
-
- if (su->su_cache != NULL)
- {
- CACHE_PERROR ("enablecache: cache already enabled");
- return 0;
- }
- uc = ALLOC (struct udp_cache, 1);
- if (uc == NULL)
- {
- CACHE_PERROR ("enablecache: could not allocate cache");
- return 0;
- }
- uc->uc_size = size;
- uc->uc_nextvictim = 0;
- uc->uc_entries = ALLOC (cache_ptr, size * SPARSENESS);
- if (uc->uc_entries == NULL)
- {
- CACHE_PERROR ("enablecache: could not allocate cache data");
- return 0;
- }
- BZERO (uc->uc_entries, cache_ptr, size * SPARSENESS);
- uc->uc_fifo = ALLOC (cache_ptr, size);
- if (uc->uc_fifo == NULL)
- {
- CACHE_PERROR ("enablecache: could not allocate cache fifo");
- return 0;
- }
- BZERO (uc->uc_fifo, cache_ptr, size);
- su->su_cache = (char *) uc;
- return 1;
-}
-
-
-/*
- * Set an entry in the cache
- */
-static void
-cache_set (SVCXPRT *xprt, u_long replylen)
-{
- cache_ptr victim;
- cache_ptr *vicp;
- struct svcudp_data *su = su_data (xprt);
- struct udp_cache *uc = (struct udp_cache *) su->su_cache;
- u_int loc;
- char *newbuf;
-
- /*
- * Find space for the new entry, either by
- * reusing an old entry, or by mallocing a new one
- */
- victim = uc->uc_fifo[uc->uc_nextvictim];
- if (victim != NULL)
- {
- loc = CACHE_LOC (xprt, victim->cache_xid);
- for (vicp = &uc->uc_entries[loc];
- *vicp != NULL && *vicp != victim;
- vicp = &(*vicp)->cache_next)
- ;
- if (*vicp == NULL)
- {
- CACHE_PERROR ("cache_set: victim not found");
- return;
- }
- *vicp = victim->cache_next; /* remote from cache */
- newbuf = victim->cache_reply;
- }
- else
- {
- victim = ALLOC (struct cache_node, 1);
- if (victim == NULL)
- {
- CACHE_PERROR ("cache_set: victim alloc failed");
- return;
- }
- newbuf = mem_alloc (su->su_iosz);
- if (newbuf == NULL)
- {
- CACHE_PERROR ("cache_set: could not allocate new rpc_buffer");
- return;
- }
- }
-
- /*
- * Store it away
- */
- victim->cache_replylen = replylen;
- victim->cache_reply = rpc_buffer (xprt);
- rpc_buffer (xprt) = newbuf;
- xdrmem_create (&(su->su_xdrs), rpc_buffer (xprt), su->su_iosz, XDR_ENCODE);
- victim->cache_xid = su->su_xid;
- victim->cache_proc = uc->uc_proc;
- victim->cache_vers = uc->uc_vers;
- victim->cache_prog = uc->uc_prog;
- victim->cache_addr = uc->uc_addr;
- loc = CACHE_LOC (xprt, victim->cache_xid);
- victim->cache_next = uc->uc_entries[loc];
- uc->uc_entries[loc] = victim;
- uc->uc_fifo[uc->uc_nextvictim++] = victim;
- uc->uc_nextvictim %= uc->uc_size;
-}
-
-/*
- * Try to get an entry from the cache
- * return 1 if found, 0 if not found
- */
-static int
-cache_get (SVCXPRT *xprt, struct rpc_msg *msg, char **replyp, u_long *replylenp)
-{
- u_int loc;
- cache_ptr ent;
- struct svcudp_data *su = su_data (xprt);
- struct udp_cache *uc = (struct udp_cache *) su->su_cache;
-
-#define EQADDR(a1, a2) (memcmp((char*)&a1, (char*)&a2, sizeof(a1)) == 0)
-
- loc = CACHE_LOC (xprt, su->su_xid);
- for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next)
- {
- if (ent->cache_xid == su->su_xid &&
- ent->cache_proc == uc->uc_proc &&
- ent->cache_vers == uc->uc_vers &&
- ent->cache_prog == uc->uc_prog &&
- EQADDR (ent->cache_addr, uc->uc_addr))
- {
- *replyp = ent->cache_reply;
- *replylenp = ent->cache_replylen;
- return 1;
- }
- }
- /*
- * Failed to find entry
- * Remember a few things so we can do a set later
- */
- uc->uc_proc = msg->rm_call.cb_proc;
- uc->uc_vers = msg->rm_call.cb_vers;
- uc->uc_prog = msg->rm_call.cb_prog;
- memcpy (&uc->uc_addr, &xprt->xp_raddr, sizeof (uc->uc_addr));
- return 0;
-}
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