[df49c60] | 1 | /* |
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| 2 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for |
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| 3 | * unrestricted use provided that this legend is included on all tape |
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| 4 | * media and as a part of the software program in whole or part. Users |
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| 5 | * may copy or modify Sun RPC without charge, but are not authorized |
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| 6 | * to license or distribute it to anyone else except as part of a product or |
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| 7 | * program developed by the user. |
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| 8 | * |
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| 9 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
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| 10 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR |
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| 11 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. |
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| 12 | * |
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| 13 | * Sun RPC is provided with no support and without any obligation on the |
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| 14 | * part of Sun Microsystems, Inc. to assist in its use, correction, |
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| 15 | * modification or enhancement. |
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| 16 | * |
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| 17 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
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| 18 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC |
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| 19 | * OR ANY PART THEREOF. |
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| 20 | * |
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| 21 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
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| 22 | * or profits or other special, indirect and consequential damages, even if |
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| 23 | * Sun has been advised of the possibility of such damages. |
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| 24 | * |
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| 25 | * Sun Microsystems, Inc. |
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| 26 | * 2550 Garcia Avenue |
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| 27 | * Mountain View, California 94043 |
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| 28 | */ |
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| 29 | |
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| 30 | #if defined(LIBC_SCCS) && !defined(lint) |
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| 31 | /*static char *sccsid = "from: @(#)clnt_udp.c 1.39 87/08/11 Copyr 1984 Sun Micro";*/ |
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| 32 | /*static char *sccsid = "from: @(#)clnt_udp.c 2.2 88/08/01 4.0 RPCSRC";*/ |
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| 33 | static char *rcsid = "$FreeBSD: src/lib/libc/rpc/clnt_udp.c,v 1.15 2000/01/27 23:06:36 jasone Exp $"; |
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| 34 | #endif |
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| 35 | |
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| 36 | /* |
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| 37 | * clnt_udp.c, Implements a UDP/IP based, client side RPC. |
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| 38 | * |
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| 39 | * Copyright (C) 1984, Sun Microsystems, Inc. |
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| 40 | */ |
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| 41 | |
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[37da47a] | 42 | #ifdef HAVE_CONFIG_H |
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| 43 | #include "config.h" |
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| 44 | #endif |
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| 45 | |
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[df49c60] | 46 | #include <stdio.h> |
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| 47 | #include <stdlib.h> |
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| 48 | #include <unistd.h> |
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| 49 | #include <string.h> |
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| 50 | #include <rpc/rpc.h> |
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| 51 | #include <sys/socket.h> |
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| 52 | #include <sys/ioctl.h> |
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| 53 | #include <netdb.h> |
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| 54 | #include <errno.h> |
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| 55 | #include <rpc/pmap_clnt.h> |
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[6f07dbc] | 56 | #include <sys/select.h> |
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[df49c60] | 57 | |
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| 58 | /* |
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| 59 | * UDP bases client side rpc operations |
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| 60 | */ |
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[1f5986b] | 61 | static enum clnt_stat clntudp_call(CLIENT *, rpcproc_t, xdrproc_t, void*, xdrproc_t, void*, struct timeval); |
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[b03af1c2] | 62 | static void clntudp_abort(void); |
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| 63 | static void clntudp_geterr(CLIENT *, struct rpc_err*); |
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[1f5986b] | 64 | static bool_t clntudp_freeres(CLIENT *, xdrproc_t, void*); |
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[b03af1c2] | 65 | static bool_t clntudp_control(CLIENT *, int, char *); |
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| 66 | static void clntudp_destroy(CLIENT *); |
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[df49c60] | 67 | |
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| 68 | static struct clnt_ops udp_ops = { |
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| 69 | clntudp_call, |
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| 70 | clntudp_abort, |
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| 71 | clntudp_geterr, |
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| 72 | clntudp_freeres, |
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| 73 | clntudp_destroy, |
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| 74 | clntudp_control |
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| 75 | }; |
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| 76 | |
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| 77 | /* |
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| 78 | * Private data kept per client handle |
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| 79 | */ |
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| 80 | struct cu_data { |
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| 81 | int cu_sock; |
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[fa1019f1] | 82 | bool_t cu_closeit; /* opened by library */ |
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[df49c60] | 83 | struct sockaddr_in cu_raddr; |
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| 84 | int cu_rlen; |
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[fa1019f1] | 85 | struct timeval cu_wait; /* retransmit interval */ |
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| 86 | struct timeval cu_total; /* total time for the call */ |
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[df49c60] | 87 | struct rpc_err cu_error; |
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| 88 | XDR cu_outxdrs; |
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| 89 | u_int cu_xdrpos; |
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[fa1019f1] | 90 | u_int cu_sendsz; /* send size */ |
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[f80b3a3] | 91 | union { |
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[ced84fc0] | 92 | u_int32_t *pi32; |
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[f80b3a3] | 93 | char *c; |
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| 94 | } _cu_outbuf; |
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| 95 | #define cu_outbuf _cu_outbuf.c |
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[fa1019f1] | 96 | u_int cu_recvsz; /* recv size */ |
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[f80b3a3] | 97 | union { |
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[ced84fc0] | 98 | u_int32_t i32; |
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[f80b3a3] | 99 | char c[1]; |
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| 100 | } _cu_inbuf; |
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| 101 | #define cu_inbuf _cu_inbuf.c |
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[df49c60] | 102 | }; |
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| 103 | |
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| 104 | /* |
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| 105 | * Create a UDP based client handle. |
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| 106 | * If *sockp<0, *sockp is set to a newly created UPD socket. |
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| 107 | * If raddr->sin_port is 0 a binder on the remote machine |
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| 108 | * is consulted for the correct port number. |
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| 109 | * NB: It is the clients responsibility to close *sockp. |
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| 110 | * NB: The rpch->cl_auth is initialized to null authentication. |
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| 111 | * Caller may wish to set this something more useful. |
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| 112 | * |
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| 113 | * wait is the amount of time used between retransmitting a call if |
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| 114 | * no response has been heard; retransmition occurs until the actual |
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| 115 | * rpc call times out. |
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| 116 | * |
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| 117 | * sendsz and recvsz are the maximum allowable packet sizes that can be |
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| 118 | * sent and received. |
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| 119 | */ |
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| 120 | CLIENT * |
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[a66bc0f] | 121 | clntudp_bufcreate( |
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| 122 | struct sockaddr_in *raddr, |
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[d422a4d8] | 123 | u_long program, /* program number */ |
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| 124 | u_long version, /* version number */ |
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[a66bc0f] | 125 | struct timeval wait, |
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| 126 | int *sockp, |
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| 127 | u_int sendsz, |
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| 128 | u_int recvsz) |
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[df49c60] | 129 | { |
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[fa1019f1] | 130 | CLIENT *cl = NULL; /* client handle */ |
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| 131 | struct cu_data *cu = NULL; /* private data */ |
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[df49c60] | 132 | struct timeval now; |
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| 133 | struct rpc_msg call_msg; |
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[3ac29f0a] | 134 | static uintptr_t disrupt; |
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[df49c60] | 135 | |
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| 136 | if (disrupt == 0) |
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[3ac29f0a] | 137 | disrupt = (uintptr_t)raddr; |
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[df49c60] | 138 | |
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| 139 | cl = (CLIENT *)mem_alloc(sizeof(CLIENT)); |
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| 140 | if (cl == NULL) { |
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| 141 | (void) fprintf(stderr, "clntudp_create: out of memory\n"); |
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| 142 | rpc_createerr.cf_stat = RPC_SYSTEMERROR; |
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| 143 | rpc_createerr.cf_error.re_errno = errno; |
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| 144 | goto fooy; |
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| 145 | } |
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| 146 | sendsz = ((sendsz + 3) / 4) * 4; |
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| 147 | recvsz = ((recvsz + 3) / 4) * 4; |
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[fa1019f1] | 148 | cu = mem_alloc(sizeof (*cu) + sendsz + recvsz); |
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[df49c60] | 149 | if (cu == NULL) { |
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| 150 | (void) fprintf(stderr, "clntudp_create: out of memory\n"); |
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| 151 | rpc_createerr.cf_stat = RPC_SYSTEMERROR; |
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| 152 | rpc_createerr.cf_error.re_errno = errno; |
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| 153 | goto fooy; |
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| 154 | } |
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| 155 | cu->cu_outbuf = &cu->cu_inbuf[recvsz]; |
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| 156 | |
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| 157 | (void)gettimeofday(&now, (struct timezone *)0); |
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| 158 | if (raddr->sin_port == 0) { |
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| 159 | u_short port; |
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| 160 | if ((port = |
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| 161 | pmap_getport(raddr, program, version, IPPROTO_UDP)) == 0) { |
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| 162 | goto fooy; |
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| 163 | } |
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| 164 | raddr->sin_port = htons(port); |
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| 165 | } |
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| 166 | cl->cl_ops = &udp_ops; |
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| 167 | cl->cl_private = (caddr_t)cu; |
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| 168 | cu->cu_raddr = *raddr; |
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| 169 | cu->cu_rlen = sizeof (cu->cu_raddr); |
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| 170 | cu->cu_wait = wait; |
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| 171 | cu->cu_total.tv_sec = -1; |
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| 172 | cu->cu_total.tv_usec = -1; |
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| 173 | cu->cu_sendsz = sendsz; |
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| 174 | cu->cu_recvsz = recvsz; |
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| 175 | call_msg.rm_xid = (++disrupt) ^ getpid() ^ now.tv_sec ^ now.tv_usec; |
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| 176 | call_msg.rm_direction = CALL; |
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| 177 | call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; |
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| 178 | call_msg.rm_call.cb_prog = program; |
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| 179 | call_msg.rm_call.cb_vers = version; |
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| 180 | xdrmem_create(&(cu->cu_outxdrs), cu->cu_outbuf, |
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| 181 | sendsz, XDR_ENCODE); |
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| 182 | if (! xdr_callhdr(&(cu->cu_outxdrs), &call_msg)) { |
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| 183 | goto fooy; |
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| 184 | } |
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| 185 | cu->cu_xdrpos = XDR_GETPOS(&(cu->cu_outxdrs)); |
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| 186 | if (*sockp < 0) { |
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| 187 | int dontblock = 1; |
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| 188 | |
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| 189 | *sockp = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
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| 190 | if (*sockp < 0) { |
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| 191 | rpc_createerr.cf_stat = RPC_SYSTEMERROR; |
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| 192 | rpc_createerr.cf_error.re_errno = errno; |
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| 193 | goto fooy; |
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| 194 | } |
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| 195 | /* attempt to bind to priv port */ |
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| 196 | (void)bindresvport(*sockp, (struct sockaddr_in *)0); |
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| 197 | /* the sockets rpc controls are non-blocking */ |
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| 198 | (void)ioctl(*sockp, FIONBIO, (char *) &dontblock); |
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| 199 | cu->cu_closeit = TRUE; |
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| 200 | } else { |
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| 201 | cu->cu_closeit = FALSE; |
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| 202 | } |
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| 203 | cu->cu_sock = *sockp; |
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| 204 | cl->cl_auth = authnone_create(); |
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| 205 | return (cl); |
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| 206 | fooy: |
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| 207 | if (cu) |
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| 208 | mem_free((caddr_t)cu, sizeof(*cu) + sendsz + recvsz); |
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| 209 | if (cl) |
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| 210 | mem_free((caddr_t)cl, sizeof(CLIENT)); |
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| 211 | return ((CLIENT *)NULL); |
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| 212 | } |
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| 213 | |
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| 214 | CLIENT * |
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[a66bc0f] | 215 | clntudp_create( |
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| 216 | struct sockaddr_in *raddr, |
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[d422a4d8] | 217 | u_long program, /* program number */ |
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| 218 | u_long version, /* version number */ |
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[a66bc0f] | 219 | struct timeval wait, |
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| 220 | int *sockp) |
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[df49c60] | 221 | { |
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| 222 | |
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| 223 | return(clntudp_bufcreate(raddr, program, version, wait, sockp, |
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| 224 | UDPMSGSIZE, UDPMSGSIZE)); |
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| 225 | } |
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| 226 | |
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| 227 | static enum clnt_stat |
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[b03af1c2] | 228 | clntudp_call( |
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| 229 | CLIENT *cl, /* client handle */ |
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[1f5986b] | 230 | rpcproc_t proc, /* procedure number */ |
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[b03af1c2] | 231 | xdrproc_t xargs, /* xdr routine for args */ |
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[1f5986b] | 232 | void *argsp, /* pointer to args */ |
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[b03af1c2] | 233 | xdrproc_t xresults, /* xdr routine for results */ |
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[1f5986b] | 234 | void *resultsp, /* pointer to results */ |
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[b03af1c2] | 235 | struct timeval utimeout ) /* seconds to wait before giving up */ |
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[df49c60] | 236 | { |
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[fa1019f1] | 237 | struct cu_data *cu = (struct cu_data *)cl->cl_private; |
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| 238 | XDR *xdrs; |
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| 239 | size_t outlen = 0; |
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| 240 | int inlen; |
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[ea78ecad] | 241 | socklen_t fromlen; |
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[df49c60] | 242 | fd_set *fds, readfds; |
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| 243 | struct sockaddr_in from; |
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| 244 | struct rpc_msg reply_msg; |
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| 245 | XDR reply_xdrs; |
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| 246 | struct timeval time_waited, start, after, tmp1, tmp2, tv; |
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| 247 | bool_t ok; |
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| 248 | int nrefreshes = 2; /* number of times to refresh cred */ |
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| 249 | struct timeval timeout; |
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| 250 | |
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| 251 | if (cu->cu_total.tv_usec == -1) |
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| 252 | timeout = utimeout; /* use supplied timeout */ |
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| 253 | else |
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| 254 | timeout = cu->cu_total; /* use default timeout */ |
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| 255 | |
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| 256 | if (cu->cu_sock + 1 > FD_SETSIZE) { |
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| 257 | int bytes = howmany(cu->cu_sock + 1, NFDBITS) * sizeof(fd_mask); |
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| 258 | fds = (fd_set *)malloc(bytes); |
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| 259 | if (fds == NULL) |
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| 260 | return (cu->cu_error.re_status = RPC_CANTSEND); |
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| 261 | memset(fds, 0, bytes); |
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| 262 | } else { |
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| 263 | fds = &readfds; |
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| 264 | FD_ZERO(fds); |
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| 265 | } |
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| 266 | |
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| 267 | timerclear(&time_waited); |
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| 268 | |
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| 269 | call_again: |
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| 270 | xdrs = &(cu->cu_outxdrs); |
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| 271 | xdrs->x_op = XDR_ENCODE; |
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| 272 | XDR_SETPOS(xdrs, cu->cu_xdrpos); |
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| 273 | /* |
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| 274 | * the transaction is the first thing in the out buffer |
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| 275 | */ |
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| 276 | (*(u_short *)(cu->cu_outbuf))++; |
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| 277 | if ((! XDR_PUTLONG(xdrs, (long *)&proc)) || |
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| 278 | (! AUTH_MARSHALL(cl->cl_auth, xdrs)) || |
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| 279 | (! (*xargs)(xdrs, argsp))) { |
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| 280 | if (fds != &readfds) |
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| 281 | free(fds); |
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| 282 | return (cu->cu_error.re_status = RPC_CANTENCODEARGS); |
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| 283 | } |
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[fa1019f1] | 284 | outlen = (size_t)XDR_GETPOS(xdrs); |
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[df49c60] | 285 | |
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| 286 | send_again: |
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| 287 | if (sendto(cu->cu_sock, cu->cu_outbuf, outlen, 0, |
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| 288 | (struct sockaddr *)&(cu->cu_raddr), cu->cu_rlen) != outlen) { |
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| 289 | cu->cu_error.re_errno = errno; |
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| 290 | if (fds != &readfds) |
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| 291 | free(fds); |
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| 292 | return (cu->cu_error.re_status = RPC_CANTSEND); |
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| 293 | } |
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| 294 | |
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| 295 | /* |
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| 296 | * Hack to provide rpc-based message passing |
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| 297 | */ |
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| 298 | if (!timerisset(&timeout)) { |
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| 299 | if (fds != &readfds) |
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| 300 | free(fds); |
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| 301 | return (cu->cu_error.re_status = RPC_TIMEDOUT); |
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| 302 | } |
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| 303 | /* |
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| 304 | * sub-optimal code appears here because we have |
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| 305 | * some clock time to spare while the packets are in flight. |
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| 306 | * (We assume that this is actually only executed once.) |
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| 307 | */ |
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| 308 | reply_msg.acpted_rply.ar_verf = _null_auth; |
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| 309 | reply_msg.acpted_rply.ar_results.where = resultsp; |
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| 310 | reply_msg.acpted_rply.ar_results.proc = xresults; |
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| 311 | |
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| 312 | gettimeofday(&start, NULL); |
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| 313 | for (;;) { |
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| 314 | /* XXX we know the other bits are still clear */ |
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| 315 | FD_SET(cu->cu_sock, fds); |
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| 316 | tv = cu->cu_wait; |
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| 317 | switch (select(cu->cu_sock+1, fds, NULL, NULL, &tv)) { |
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| 318 | |
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| 319 | case 0: |
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| 320 | timeradd(&time_waited, &cu->cu_wait, &tmp1); |
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| 321 | time_waited = tmp1; |
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| 322 | if (timercmp(&time_waited, &timeout, <)) |
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| 323 | goto send_again; |
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| 324 | if (fds != &readfds) |
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| 325 | free(fds); |
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| 326 | return (cu->cu_error.re_status = RPC_TIMEDOUT); |
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| 327 | |
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| 328 | case -1: |
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| 329 | if (errno == EINTR) { |
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| 330 | gettimeofday(&after, NULL); |
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| 331 | timersub(&after, &start, &tmp1); |
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| 332 | timeradd(&time_waited, &tmp1, &tmp2); |
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| 333 | time_waited = tmp2; |
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| 334 | if (timercmp(&time_waited, &timeout, <)) |
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| 335 | continue; |
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| 336 | if (fds != &readfds) |
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| 337 | free(fds); |
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| 338 | return (cu->cu_error.re_status = RPC_TIMEDOUT); |
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| 339 | } |
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| 340 | cu->cu_error.re_errno = errno; |
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| 341 | if (fds != &readfds) |
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| 342 | free(fds); |
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| 343 | return (cu->cu_error.re_status = RPC_CANTRECV); |
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| 344 | } |
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| 345 | |
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| 346 | do { |
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| 347 | fromlen = sizeof(struct sockaddr); |
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| 348 | inlen = recvfrom(cu->cu_sock, cu->cu_inbuf, |
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| 349 | (int) cu->cu_recvsz, 0, |
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| 350 | (struct sockaddr *)&from, &fromlen); |
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| 351 | } while (inlen < 0 && errno == EINTR); |
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| 352 | if (inlen < 0) { |
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| 353 | if (errno == EWOULDBLOCK) |
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| 354 | continue; |
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| 355 | cu->cu_error.re_errno = errno; |
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| 356 | if (fds != &readfds) |
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| 357 | free(fds); |
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| 358 | return (cu->cu_error.re_status = RPC_CANTRECV); |
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| 359 | } |
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| 360 | if (inlen < sizeof(u_int32_t)) |
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| 361 | continue; |
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| 362 | /* see if reply transaction id matches sent id */ |
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[ced84fc0] | 363 | if ( cu->_cu_inbuf.i32 != *cu->_cu_outbuf.pi32 ) |
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[df49c60] | 364 | continue; |
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| 365 | /* we now assume we have the proper reply */ |
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| 366 | break; |
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| 367 | } |
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| 368 | |
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| 369 | /* |
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| 370 | * now decode and validate the response |
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| 371 | */ |
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| 372 | xdrmem_create(&reply_xdrs, cu->cu_inbuf, (u_int)inlen, XDR_DECODE); |
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| 373 | ok = xdr_replymsg(&reply_xdrs, &reply_msg); |
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| 374 | /* XDR_DESTROY(&reply_xdrs); save a few cycles on noop destroy */ |
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| 375 | if (ok) { |
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| 376 | _seterr_reply(&reply_msg, &(cu->cu_error)); |
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| 377 | if (cu->cu_error.re_status == RPC_SUCCESS) { |
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| 378 | if (! AUTH_VALIDATE(cl->cl_auth, |
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| 379 | &reply_msg.acpted_rply.ar_verf)) { |
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| 380 | cu->cu_error.re_status = RPC_AUTHERROR; |
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| 381 | cu->cu_error.re_why = AUTH_INVALIDRESP; |
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| 382 | } |
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| 383 | if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) { |
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| 384 | xdrs->x_op = XDR_FREE; |
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| 385 | (void)xdr_opaque_auth(xdrs, |
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| 386 | &(reply_msg.acpted_rply.ar_verf)); |
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| 387 | } |
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| 388 | } /* end successful completion */ |
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| 389 | else { |
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| 390 | /* maybe our credentials need to be refreshed ... */ |
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| 391 | if (nrefreshes > 0 && AUTH_REFRESH(cl->cl_auth)) { |
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| 392 | nrefreshes--; |
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| 393 | goto call_again; |
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| 394 | } |
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| 395 | } /* end of unsuccessful completion */ |
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| 396 | } /* end of valid reply message */ |
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| 397 | else { |
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| 398 | /* |
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| 399 | * It's possible for xdr_replymsg() to fail partway |
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| 400 | * through its attempt to decode the result from the |
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| 401 | * server. If this happens, it will leave the reply |
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| 402 | * structure partially populated with dynamically |
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| 403 | * allocated memory. (This can happen if someone uses |
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| 404 | * clntudp_bufcreate() to create a CLIENT handle and |
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| 405 | * specifies a receive buffer size that is too small.) |
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| 406 | * This memory must be free()ed to avoid a leak. |
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| 407 | */ |
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| 408 | int op = reply_xdrs.x_op; |
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| 409 | reply_xdrs.x_op = XDR_FREE; |
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| 410 | xdr_replymsg(&reply_xdrs, &reply_msg); |
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| 411 | reply_xdrs.x_op = op; |
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| 412 | cu->cu_error.re_status = RPC_CANTDECODERES; |
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| 413 | } |
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| 414 | if (fds != &readfds) |
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| 415 | free(fds); |
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| 416 | return (cu->cu_error.re_status); |
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| 417 | } |
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| 418 | |
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| 419 | static void |
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[b03af1c2] | 420 | clntudp_geterr( |
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| 421 | CLIENT *cl, |
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| 422 | struct rpc_err *errp) |
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[df49c60] | 423 | { |
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[fa1019f1] | 424 | struct cu_data *cu = (struct cu_data *)cl->cl_private; |
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[df49c60] | 425 | |
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| 426 | *errp = cu->cu_error; |
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| 427 | } |
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| 428 | |
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| 429 | |
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| 430 | static bool_t |
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[b03af1c2] | 431 | clntudp_freeres( |
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| 432 | CLIENT *cl, |
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| 433 | xdrproc_t xdr_res, |
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[1f5986b] | 434 | void *res_ptr) |
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[df49c60] | 435 | { |
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[fa1019f1] | 436 | struct cu_data *cu = (struct cu_data *)cl->cl_private; |
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| 437 | XDR *xdrs = &(cu->cu_outxdrs); |
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[df49c60] | 438 | |
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| 439 | xdrs->x_op = XDR_FREE; |
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| 440 | return ((*xdr_res)(xdrs, res_ptr)); |
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| 441 | } |
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| 442 | |
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| 443 | static void |
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[b03af1c2] | 444 | clntudp_abort(void) |
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[df49c60] | 445 | { |
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| 446 | } |
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| 447 | |
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| 448 | |
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| 449 | static bool_t |
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[b03af1c2] | 450 | clntudp_control( |
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| 451 | CLIENT *cl, |
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| 452 | int request, |
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| 453 | char *info) |
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[df49c60] | 454 | { |
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[fa1019f1] | 455 | struct cu_data *cu = (struct cu_data *)cl->cl_private; |
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| 456 | struct timeval *tv; |
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[ea78ecad] | 457 | socklen_t len; |
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[df49c60] | 458 | |
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| 459 | switch (request) { |
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| 460 | case CLSET_FD_CLOSE: |
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| 461 | cu->cu_closeit = TRUE; |
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| 462 | break; |
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| 463 | case CLSET_FD_NCLOSE: |
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| 464 | cu->cu_closeit = FALSE; |
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| 465 | break; |
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| 466 | case CLSET_TIMEOUT: |
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| 467 | if (info == NULL) |
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| 468 | return(FALSE); |
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| 469 | tv = (struct timeval *)info; |
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| 470 | cu->cu_total.tv_sec = tv->tv_sec; |
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| 471 | cu->cu_total.tv_usec = tv->tv_usec; |
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| 472 | break; |
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| 473 | case CLGET_TIMEOUT: |
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| 474 | if (info == NULL) |
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| 475 | return(FALSE); |
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| 476 | *(struct timeval *)info = cu->cu_total; |
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| 477 | break; |
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| 478 | case CLSET_RETRY_TIMEOUT: |
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| 479 | if (info == NULL) |
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| 480 | return(FALSE); |
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| 481 | tv = (struct timeval *)info; |
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| 482 | cu->cu_wait.tv_sec = tv->tv_sec; |
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| 483 | cu->cu_wait.tv_usec = tv->tv_usec; |
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| 484 | break; |
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| 485 | case CLGET_RETRY_TIMEOUT: |
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| 486 | if (info == NULL) |
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| 487 | return(FALSE); |
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| 488 | *(struct timeval *)info = cu->cu_wait; |
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| 489 | break; |
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| 490 | case CLGET_SERVER_ADDR: |
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| 491 | if (info == NULL) |
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| 492 | return(FALSE); |
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| 493 | *(struct sockaddr_in *)info = cu->cu_raddr; |
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| 494 | break; |
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| 495 | case CLGET_FD: |
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| 496 | if (info == NULL) |
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| 497 | return(FALSE); |
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| 498 | *(int *)info = cu->cu_sock; |
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| 499 | break; |
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| 500 | case CLGET_XID: |
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| 501 | /* |
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| 502 | * use the knowledge that xid is the |
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| 503 | * first element in the call structure *. |
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| 504 | * This will get the xid of the PREVIOUS call |
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| 505 | */ |
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| 506 | if (info == NULL) |
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| 507 | return(FALSE); |
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| 508 | *(u_long *)info = ntohl(*(u_long *)cu->cu_outbuf); |
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| 509 | break; |
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| 510 | case CLSET_XID: |
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| 511 | /* This will set the xid of the NEXT call */ |
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| 512 | if (info == NULL) |
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| 513 | return(FALSE); |
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| 514 | *(u_long *)cu->cu_outbuf = htonl(*(u_long *)info - 1); |
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| 515 | /* decrement by 1 as clntudp_call() increments once */ |
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| 516 | case CLGET_VERS: |
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| 517 | /* |
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| 518 | * This RELIES on the information that, in the call body, |
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| 519 | * the version number field is the fifth field from the |
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| 520 | * begining of the RPC header. MUST be changed if the |
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| 521 | * call_struct is changed |
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| 522 | */ |
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| 523 | if (info == NULL) |
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| 524 | return(FALSE); |
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| 525 | *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf + |
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| 526 | 4 * BYTES_PER_XDR_UNIT)); |
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| 527 | break; |
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| 528 | case CLSET_VERS: |
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| 529 | if (info == NULL) |
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| 530 | return(FALSE); |
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| 531 | *(u_long *)(cu->cu_outbuf + 4 * BYTES_PER_XDR_UNIT) |
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| 532 | = htonl(*(u_long *)info); |
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| 533 | break; |
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| 534 | case CLGET_PROG: |
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| 535 | /* |
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| 536 | * This RELIES on the information that, in the call body, |
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[fa1019f1] | 537 | * the program number field is the fourth field from the |
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[df49c60] | 538 | * begining of the RPC header. MUST be changed if the |
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| 539 | * call_struct is changed |
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| 540 | */ |
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| 541 | if (info == NULL) |
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| 542 | return(FALSE); |
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| 543 | *(u_long *)info = ntohl(*(u_long *)(cu->cu_outbuf + |
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| 544 | 3 * BYTES_PER_XDR_UNIT)); |
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| 545 | break; |
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| 546 | case CLSET_PROG: |
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| 547 | if (info == NULL) |
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| 548 | return(FALSE); |
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| 549 | *(u_long *)(cu->cu_outbuf + 3 * BYTES_PER_XDR_UNIT) |
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| 550 | = htonl(*(u_long *)info); |
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| 551 | break; |
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| 552 | case CLGET_LOCAL_ADDR: |
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| 553 | len = sizeof(struct sockaddr); |
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| 554 | if (getsockname(cu->cu_sock, (struct sockaddr *)info, &len) <0) |
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| 555 | return(FALSE); |
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| 556 | break; |
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| 557 | case CLGET_SVC_ADDR: |
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| 558 | case CLSET_SVC_ADDR: |
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| 559 | case CLSET_PUSH_TIMOD: |
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| 560 | case CLSET_POP_TIMOD: |
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| 561 | default: |
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| 562 | return (FALSE); |
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| 563 | } |
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| 564 | return (TRUE); |
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| 565 | } |
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| 566 | |
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| 567 | static void |
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[b03af1c2] | 568 | clntudp_destroy( |
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| 569 | CLIENT *cl) |
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[df49c60] | 570 | { |
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[fa1019f1] | 571 | struct cu_data *cu = (struct cu_data *)cl->cl_private; |
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[df49c60] | 572 | |
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| 573 | if (cu->cu_closeit) { |
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[57cfaad] | 574 | (void)_RPC_close(cu->cu_sock); |
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[df49c60] | 575 | } |
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| 576 | XDR_DESTROY(&(cu->cu_outxdrs)); |
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[fa1019f1] | 577 | mem_free(cu, (sizeof (*cu) + cu->cu_sendsz + cu->cu_recvsz)); |
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| 578 | mem_free(cl, sizeof (CLIENT)); |
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[df49c60] | 579 | } |
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