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_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";*/ |
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32 | /*static char *sccsid = "from: @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC";*/ |
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33 | static char *rcsid = "$FreeBSD: src/lib/libc/rpc/clnt_simple.c,v 1.12 2000/01/27 23:06:35 jasone Exp $"; |
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34 | #endif |
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35 | |
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36 | /* |
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37 | * clnt_simple.c |
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38 | * Simplified front end to rpc. |
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39 | * |
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40 | * Copyright (C) 1984, Sun Microsystems, Inc. |
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41 | */ |
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42 | |
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43 | #include <sys/param.h> |
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44 | #include <stdio.h> |
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45 | #include <stdlib.h> |
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46 | #include <unistd.h> |
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47 | #include <string.h> |
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48 | #include <rpc/rpc.h> |
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49 | #include <sys/socket.h> |
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50 | #include <netdb.h> |
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51 | |
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52 | struct call_rpc_private { |
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53 | CLIENT *client; |
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54 | int socket; |
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55 | int oldprognum, oldversnum, valid; |
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56 | char *oldhost; |
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57 | }; |
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58 | #define callrpc_private (rtems_rpc_task_variables->call_rpc_private) |
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59 | |
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60 | int |
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61 | callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) |
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62 | char *host; |
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63 | int prognum, versnum, procnum; |
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64 | xdrproc_t inproc, outproc; |
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65 | char *in, *out; |
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66 | { |
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67 | register struct call_rpc_private *crp = callrpc_private; |
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68 | struct sockaddr_in server_addr; |
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69 | enum clnt_stat clnt_stat; |
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70 | struct hostent *hp; |
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71 | struct timeval timeout, tottimeout; |
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72 | |
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73 | if (crp == 0) { |
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74 | crp = (struct call_rpc_private *)calloc(1, sizeof (*crp)); |
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75 | if (crp == 0) |
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76 | return (0); |
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77 | callrpc_private = crp; |
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78 | } |
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79 | if (crp->oldhost == NULL) { |
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80 | crp->oldhost = malloc(MAXHOSTNAMELEN); |
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81 | crp->oldhost[0] = 0; |
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82 | crp->socket = RPC_ANYSOCK; |
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83 | } |
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84 | if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum |
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85 | && strcmp(crp->oldhost, host) == 0) { |
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86 | /* reuse old client */ |
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87 | } else { |
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88 | crp->valid = 0; |
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89 | if (crp->socket != -1) |
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90 | (void)_RPC_close(crp->socket); |
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91 | crp->socket = RPC_ANYSOCK; |
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92 | if (crp->client) { |
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93 | clnt_destroy(crp->client); |
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94 | crp->client = NULL; |
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95 | } |
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96 | if ((hp = gethostbyname(host)) == NULL) |
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97 | return ((int) RPC_UNKNOWNHOST); |
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98 | timeout.tv_usec = 0; |
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99 | timeout.tv_sec = 5; |
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100 | memset(&server_addr, 0, sizeof(server_addr)); |
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101 | memcpy((char *)&server_addr.sin_addr, hp->h_addr, hp->h_length); |
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102 | server_addr.sin_len = sizeof(struct sockaddr_in); |
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103 | server_addr.sin_family = AF_INET; |
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104 | server_addr.sin_port = 0; |
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105 | if ((crp->client = clntudp_create(&server_addr, (u_long)prognum, |
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106 | (u_long)versnum, timeout, &crp->socket)) == NULL) |
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107 | return ((int) rpc_createerr.cf_stat); |
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108 | crp->valid = 1; |
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109 | crp->oldprognum = prognum; |
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110 | crp->oldversnum = versnum; |
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111 | (void) strcpy(crp->oldhost, host); |
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112 | } |
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113 | tottimeout.tv_sec = 25; |
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114 | tottimeout.tv_usec = 0; |
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115 | clnt_stat = clnt_call(crp->client, procnum, inproc, in, |
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116 | outproc, out, tottimeout); |
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117 | /* |
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118 | * if call failed, empty cache |
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119 | */ |
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120 | if (clnt_stat != RPC_SUCCESS) |
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121 | crp->valid = 0; |
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122 | return ((int) clnt_stat); |
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123 | } |
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