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Diffstat (limited to 'libc/inet/rpc/clnt_unix.c')
-rw-r--r--libc/inet/rpc/clnt_unix.c586
1 files changed, 0 insertions, 586 deletions
diff --git a/libc/inet/rpc/clnt_unix.c b/libc/inet/rpc/clnt_unix.c
deleted file mode 100644
index 060fac422..000000000
--- a/libc/inet/rpc/clnt_unix.c
+++ /dev/null
@@ -1,586 +0,0 @@
-/*
- * 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
- */
-
-/*
- * clnt_unix.c, Implements a TCP/IP based, client side RPC.
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
- *
- * TCP based RPC supports 'batched calls'.
- * A sequence of calls may be batched-up in a send buffer. The rpc call
- * return immediately to the client even though the call was not necessarily
- * sent. The batching occurs if the results' xdr routine is NULL (0) AND
- * the rpc timeout value is zero (see clnt.h, rpc).
- *
- * Clients should NOT casually batch calls that in fact return results; that is,
- * the server side should be aware that a call is batched and not produce any
- * return message. Batched calls that produce many result messages can
- * deadlock (netlock) the client and the server....
- *
- * Now go hang yourself.
- */
-
-#include <netdb.h>
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#include "rpc_private.h"
-#include <sys/uio.h>
-#include <sys/poll.h>
-#include <sys/socket.h>
-#include <rpc/pmap_clnt.h>
-
-#define MCALL_MSG_SIZE 24
-
-struct ct_data
- {
- int ct_sock;
- bool_t ct_closeit;
- struct timeval ct_wait;
- bool_t ct_waitset; /* wait set by clnt_control? */
- struct sockaddr_un ct_addr;
- struct rpc_err ct_error;
- char ct_mcall[MCALL_MSG_SIZE]; /* marshalled callmsg */
- u_int ct_mpos; /* pos after marshal */
- XDR ct_xdrs;
- };
-
-static int readunix (char *, char *, int);
-static int writeunix (char *, char *, int);
-
-static enum clnt_stat clntunix_call (CLIENT *, u_long, xdrproc_t, caddr_t,
- xdrproc_t, caddr_t, struct timeval);
-static void clntunix_abort (void);
-static void clntunix_geterr (CLIENT *, struct rpc_err *);
-static bool_t clntunix_freeres (CLIENT *, xdrproc_t, caddr_t);
-static bool_t clntunix_control (CLIENT *, int, char *);
-static void clntunix_destroy (CLIENT *);
-
-static const struct clnt_ops unix_ops =
-{
- clntunix_call,
- clntunix_abort,
- clntunix_geterr,
- clntunix_freeres,
- clntunix_destroy,
- clntunix_control
-};
-
-/*
- * Create a client handle for a tcp/ip connection.
- * If *sockp<0, *sockp is set to a newly created TCP socket and it is
- * connected to raddr. If *sockp non-negative then
- * raddr is ignored. The rpc/tcp package does buffering
- * similar to stdio, so the client must pick send and receive buffer sizes,];
- * 0 => use the default.
- * If raddr->sin_port is 0, then a binder on the remote machine is
- * consulted for the right port number.
- * NB: *sockp is copied into a private area.
- * NB: It is the clients responsibility to close *sockp.
- * NB: The rpch->cl_auth is set null authentication. Caller may wish to set this
- * something more useful.
- */
-CLIENT *
-clntunix_create (struct sockaddr_un *raddr, u_long prog, u_long vers,
- int *sockp, u_int sendsz, u_int recvsz)
-{
- CLIENT *h;
- struct ct_data *ct = (struct ct_data *) mem_alloc (sizeof (*ct));
- struct rpc_msg call_msg;
- int len;
-
- h = (CLIENT *) mem_alloc (sizeof (*h));
- if (h == NULL || ct == NULL)
- {
- struct rpc_createerr *ce = &get_rpc_createerr ();
- (void) fputs ("clntunix_create: out of memory\n", stderr);
- ce->cf_stat = RPC_SYSTEMERROR;
- ce->cf_error.re_errno = ENOMEM;
- goto fooy;
- }
-
- /*
- * If no socket given, open one
- */
- if (*sockp < 0)
- {
- *sockp = socket (AF_UNIX, SOCK_STREAM, 0);
- len = strlen (raddr->sun_path) + sizeof (raddr->sun_family) + 1;
- if (*sockp < 0
- || connect (*sockp, (struct sockaddr *) raddr, len) < 0)
- {
- struct rpc_createerr *ce = &get_rpc_createerr ();
- ce->cf_stat = RPC_SYSTEMERROR;
- ce->cf_error.re_errno = errno;
- if (*sockp != -1)
- close (*sockp);
- goto fooy;
- }
- ct->ct_closeit = TRUE;
- }
- else
- {
- ct->ct_closeit = FALSE;
- }
-
- /*
- * Set up private data struct
- */
- ct->ct_sock = *sockp;
- ct->ct_wait.tv_usec = 0;
- ct->ct_waitset = FALSE;
- ct->ct_addr = *raddr;
-
- /*
- * Initialize call message
- */
- call_msg.rm_xid = _create_xid ();
- call_msg.rm_direction = CALL;
- call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
- call_msg.rm_call.cb_prog = prog;
- call_msg.rm_call.cb_vers = vers;
-
- /*
- * pre-serialize the static part of the call msg and stash it away
- */
- xdrmem_create (&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE, XDR_ENCODE);
- if (!xdr_callhdr (&(ct->ct_xdrs), &call_msg))
- {
- if (ct->ct_closeit)
- close (*sockp);
- goto fooy;
- }
- ct->ct_mpos = XDR_GETPOS (&(ct->ct_xdrs));
- XDR_DESTROY (&(ct->ct_xdrs));
-
- /*
- * Create a client handle which uses xdrrec for serialization
- * and authnone for authentication.
- */
- xdrrec_create (&(ct->ct_xdrs), sendsz, recvsz,
- (caddr_t) ct, readunix, writeunix);
- h->cl_ops = &unix_ops;
- h->cl_private = (caddr_t) ct;
- h->cl_auth = authnone_create ();
- return h;
-
-fooy:
- /*
- * Something goofed, free stuff and barf
- */
- mem_free ((caddr_t) ct, sizeof (struct ct_data));
- mem_free ((caddr_t) h, sizeof (CLIENT));
- return (CLIENT *) NULL;
-}
-libc_hidden_def(clntunix_create)
-
-static enum clnt_stat
-clntunix_call (CLIENT *h, u_long proc, xdrproc_t xdr_args, caddr_t args_ptr,
- xdrproc_t xdr_results, caddr_t results_ptr,
- struct timeval timeout)
-{
- struct ct_data *ct = (struct ct_data *) h->cl_private;
- XDR *xdrs = &(ct->ct_xdrs);
- struct rpc_msg reply_msg;
- u_long x_id;
- u_int32_t *msg_x_id = (u_int32_t *) (ct->ct_mcall); /* yuk */
- bool_t shipnow;
- int refreshes = 2;
-
- if (!ct->ct_waitset)
- {
- ct->ct_wait = timeout;
- }
-
- shipnow =
- (xdr_results == (xdrproc_t) 0 && ct->ct_wait.tv_sec == 0
- && ct->ct_wait.tv_usec == 0) ? FALSE : TRUE;
-
-call_again:
- xdrs->x_op = XDR_ENCODE;
- ct->ct_error.re_status = RPC_SUCCESS;
- x_id = ntohl (--(*msg_x_id));
- if ((!XDR_PUTBYTES (xdrs, ct->ct_mcall, ct->ct_mpos)) ||
- (!XDR_PUTLONG (xdrs, (long *) &proc)) ||
- (!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
- (!(*xdr_args) (xdrs, args_ptr)))
- {
- if (ct->ct_error.re_status == RPC_SUCCESS)
- ct->ct_error.re_status = RPC_CANTENCODEARGS;
- (void) xdrrec_endofrecord (xdrs, TRUE);
- return ct->ct_error.re_status;
- }
- if (!xdrrec_endofrecord (xdrs, shipnow))
- return ct->ct_error.re_status = RPC_CANTSEND;
- if (!shipnow)
- return RPC_SUCCESS;
- /*
- * Hack to provide rpc-based message passing
- */
- if (ct->ct_wait.tv_sec == 0 && ct->ct_wait.tv_usec == 0)
- return ct->ct_error.re_status = RPC_TIMEDOUT;
-
-
- /*
- * Keep receiving until we get a valid transaction id
- */
- xdrs->x_op = XDR_DECODE;
- while (TRUE)
- {
- reply_msg.acpted_rply.ar_verf = _null_auth;
- reply_msg.acpted_rply.ar_results.where = NULL;
- reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
- if (!xdrrec_skiprecord (xdrs))
- return ct->ct_error.re_status;
- /* now decode and validate the response header */
- if (!xdr_replymsg (xdrs, &reply_msg))
- {
- if (ct->ct_error.re_status == RPC_SUCCESS)
- continue;
- return ct->ct_error.re_status;
- }
- if (reply_msg.rm_xid == x_id)
- break;
- }
-
- /*
- * process header
- */
- _seterr_reply (&reply_msg, &(ct->ct_error));
- if (ct->ct_error.re_status == RPC_SUCCESS)
- {
- if (!AUTH_VALIDATE (h->cl_auth, &reply_msg.acpted_rply.ar_verf))
- {
- ct->ct_error.re_status = RPC_AUTHERROR;
- ct->ct_error.re_why = AUTH_INVALIDRESP;
- }
- else if (!(*xdr_results) (xdrs, results_ptr))
- {
- if (ct->ct_error.re_status == RPC_SUCCESS)
- ct->ct_error.re_status = RPC_CANTDECODERES;
- }
- /* free verifier ... */
- if (reply_msg.acpted_rply.ar_verf.oa_base != NULL)
- {
- xdrs->x_op = XDR_FREE;
- (void) xdr_opaque_auth (xdrs, &(reply_msg.acpted_rply.ar_verf));
- }
- } /* end successful completion */
- else
- {
- /* maybe our credentials need to be refreshed ... */
- if (refreshes-- && AUTH_REFRESH (h->cl_auth))
- goto call_again;
- } /* end of unsuccessful completion */
- return ct->ct_error.re_status;
-}
-
-static void
-clntunix_geterr (CLIENT *h, struct rpc_err *errp)
-{
- struct ct_data *ct = (struct ct_data *) h->cl_private;
-
- *errp = ct->ct_error;
-}
-
-static bool_t
-clntunix_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
-{
- struct ct_data *ct = (struct ct_data *) cl->cl_private;
- XDR *xdrs = &(ct->ct_xdrs);
-
- xdrs->x_op = XDR_FREE;
- return (*xdr_res) (xdrs, res_ptr);
-}
-
-static void
-clntunix_abort (void)
-{
-}
-
-static bool_t
-clntunix_control (CLIENT *cl, int request, char *info)
-{
- struct ct_data *ct = (struct ct_data *) cl->cl_private;
-
-
- switch (request)
- {
- case CLSET_FD_CLOSE:
- ct->ct_closeit = TRUE;
- break;
- case CLSET_FD_NCLOSE:
- ct->ct_closeit = FALSE;
- break;
- case CLSET_TIMEOUT:
- ct->ct_wait = *(struct timeval *) info;
- break;
- case CLGET_TIMEOUT:
- *(struct timeval *) info = ct->ct_wait;
- break;
- case CLGET_SERVER_ADDR:
- *(struct sockaddr_un *) info = ct->ct_addr;
- break;
- case CLGET_FD:
- *(int *)info = ct->ct_sock;
- break;
- case CLGET_XID:
- /*
- * use the knowledge that xid is the
- * first element in the call structure *.
- * This will get the xid of the PREVIOUS call
- */
- *(u_long *) info = ntohl (*(u_long *)ct->ct_mcall);
- break;
- case CLSET_XID:
- /* This will set the xid of the NEXT call */
- *(u_long *) ct->ct_mcall = htonl (*(u_long *)info - 1);
- /* decrement by 1 as clntunix_call() increments once */
- break;
- case CLGET_VERS:
- /*
- * This RELIES on the information that, in the call body,
- * the version number field is the fifth field from the
- * begining of the RPC header. MUST be changed if the
- * call_struct is changed
- */
- *(u_long *) info = ntohl (*(u_long *) (ct->ct_mcall
- + 4 * BYTES_PER_XDR_UNIT));
- break;
- case CLSET_VERS:
- *(u_long *) (ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT)
- = htonl (*(u_long *) info);
- break;
- case CLGET_PROG:
- /*
- * This RELIES on the information that, in the call body,
- * the program number field is the field from the
- * begining of the RPC header. MUST be changed if the
- * call_struct is changed
- */
- *(u_long *) info = ntohl (*(u_long *) (ct->ct_mcall
- + 3 * BYTES_PER_XDR_UNIT));
- break;
- case CLSET_PROG:
- *(u_long *) (ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT)
- = htonl(*(u_long *) info);
- break;
- /* The following are only possible with TI-RPC */
- case CLGET_RETRY_TIMEOUT:
- case CLSET_RETRY_TIMEOUT:
- case CLGET_SVC_ADDR:
- case CLSET_SVC_ADDR:
- case CLSET_PUSH_TIMOD:
- case CLSET_POP_TIMOD:
- default:
- return FALSE;
- }
- return TRUE;
-}
-
-
-static void
-clntunix_destroy (CLIENT *h)
-{
- struct ct_data *ct =
- (struct ct_data *) h->cl_private;
-
- if (ct->ct_closeit)
- {
- (void) close (ct->ct_sock);
- }
- XDR_DESTROY (&(ct->ct_xdrs));
- mem_free ((caddr_t) ct, sizeof (struct ct_data));
- mem_free ((caddr_t) h, sizeof (CLIENT));
-}
-
-static int
-__msgread (int sock, void *data, size_t cnt)
-{
- struct iovec iov;
- struct msghdr msg;
-#ifdef SCM_CREDENTIALS
- /*static -why??*/ char cm[CMSG_SPACE(sizeof (struct ucred))];
-#endif
- int len;
-
- iov.iov_base = data;
- iov.iov_len = cnt;
-
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
-#ifdef SCM_CREDENTIALS
- msg.msg_control = (caddr_t) &cm;
- msg.msg_controllen = CMSG_SPACE(sizeof (struct ucred));
-#endif
- msg.msg_flags = 0;
-
-#ifdef SO_PASSCRED
- {
- int on = 1;
- if (setsockopt (sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on)))
- return -1;
- }
-#endif
-
- restart:
- len = recvmsg (sock, &msg, 0);
- if (len >= 0)
- {
- if (msg.msg_flags & MSG_CTRUNC || len == 0)
- return 0;
- else
- return len;
- }
- if (errno == EINTR)
- goto restart;
- return -1;
-}
-
-static int
-__msgwrite (int sock, void *data, size_t cnt)
-{
-#ifndef SCM_CREDENTIALS
- /* We cannot implement this reliably. */
- __set_errno (ENOSYS);
- return -1;
-#else
- struct iovec iov;
- struct msghdr msg;
- struct cmsghdr *cmsg = alloca (CMSG_SPACE(sizeof (struct ucred)));
- struct ucred cred;
- int len;
-
- /* XXX I'm not sure, if gete?id() is always correct, or if we should use
- get?id(). But since keyserv needs geteuid(), we have no other chance.
- It would be much better, if the kernel could pass both to the server. */
- cred.pid = getpid ();
- cred.uid = geteuid ();
- cred.gid = getegid ();
-
- memcpy (CMSG_DATA(cmsg), &cred, sizeof (struct ucred));
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_CREDENTIALS;
- cmsg->cmsg_len = sizeof(*cmsg) + sizeof(struct ucred);
-
- iov.iov_base = data;
- iov.iov_len = cnt;
-
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_control = cmsg;
- msg.msg_controllen = CMSG_ALIGN(cmsg->cmsg_len);
- msg.msg_flags = 0;
-
- restart:
- len = sendmsg (sock, &msg, 0);
- if (len >= 0)
- return len;
- if (errno == EINTR)
- goto restart;
- return -1;
-
-#endif
-}
-
-
-/*
- * Interface between xdr serializer and unix connection.
- * Behaves like the system calls, read & write, but keeps some error state
- * around for the rpc level.
- */
-static int
-readunix (char *ctptr, char *buf, int len)
-{
- struct ct_data *ct = (struct ct_data *) ctptr;
- struct pollfd fd;
- int milliseconds = ((ct->ct_wait.tv_sec * 1000)
- + (ct->ct_wait.tv_usec / 1000));
-
- if (len == 0)
- return 0;
-
- fd.fd = ct->ct_sock;
- fd.events = POLLIN;
- while (TRUE)
- {
- switch (poll (&fd, 1, milliseconds))
- {
- case 0:
- ct->ct_error.re_status = RPC_TIMEDOUT;
- return -1;
-
- case -1:
- if (errno == EINTR)
- continue;
- ct->ct_error.re_status = RPC_CANTRECV;
- ct->ct_error.re_errno = errno;
- return -1;
- }
- break;
- }
- switch (len = __msgread (ct->ct_sock, buf, len))
- {
-
- case 0:
- /* premature eof */
- ct->ct_error.re_errno = ECONNRESET;
- ct->ct_error.re_status = RPC_CANTRECV;
- len = -1; /* it's really an error */
- break;
-
- case -1:
- ct->ct_error.re_errno = errno;
- ct->ct_error.re_status = RPC_CANTRECV;
- break;
- }
- return len;
-}
-
-static int
-writeunix (char *ctptr, char *buf, int len)
-{
- int i, cnt;
- struct ct_data *ct = (struct ct_data *) ctptr;
-
- for (cnt = len; cnt > 0; cnt -= i, buf += i)
- {
- if ((i = __msgwrite (ct->ct_sock, buf, cnt)) == -1)
- {
- ct->ct_error.re_errno = errno;
- ct->ct_error.re_status = RPC_CANTSEND;
- return -1;
- }
- }
- return len;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 11:43:15 +0000