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: @(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro";*/ |
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32 | /*static char *sccsid = "from: @(#)svc_simple.c 2.2 88/08/01 4.0 RPCSRC";*/ |
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33 | static char *rcsid = "$FreeBSD: src/lib/libc/rpc/svc_simple.c,v 1.9 1999/08/28 00:00:50 peter Exp $"; |
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34 | #endif |
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35 | |
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36 | /* |
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37 | * svc_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 <stdio.h> |
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44 | #include <stdlib.h> |
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45 | #include <string.h> |
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46 | #include <rpc/rpc.h> |
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47 | #include <rpc/pmap_clnt.h> |
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48 | #include <sys/socket.h> |
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49 | #include <netdb.h> |
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50 | |
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51 | struct prog_lst { |
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52 | char *(*p_progname)(); |
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53 | int p_prognum; |
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54 | int p_procnum; |
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55 | xdrproc_t p_inproc, p_outproc; |
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56 | struct prog_lst *p_nxt; |
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57 | }; |
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58 | static void universal(); |
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59 | #define proglst (rtems_rpc_task_variables->svc_simple_proglst) |
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60 | #define pl (rtems_rpc_task_variables->svc_simple_pl) |
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61 | #define transp (rtems_rpc_task_variables->svc_simple_transp) |
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62 | |
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63 | int |
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64 | registerrpc( |
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65 | int prognum, |
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66 | int versnum, |
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67 | int procnum, |
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68 | char *(*progname)(), |
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69 | xdrproc_t inproc, |
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70 | xdrproc_t outproc ) |
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71 | { |
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72 | |
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73 | if (procnum == NULLPROC) { |
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74 | (void) fprintf(stderr, |
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75 | "can't reassign procedure number %ld\n", NULLPROC); |
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76 | return (-1); |
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77 | } |
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78 | if (transp == 0) { |
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79 | transp = svcudp_create(RPC_ANYSOCK); |
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80 | if (transp == NULL) { |
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81 | (void) fprintf(stderr, "couldn't create an rpc server\n"); |
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82 | return (-1); |
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83 | } |
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84 | } |
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85 | (void) pmap_unset((u_long)prognum, (u_long)versnum); |
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86 | if (!svc_register(transp, (u_long)prognum, (u_long)versnum, |
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87 | universal, IPPROTO_UDP)) { |
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88 | (void) fprintf(stderr, "couldn't register prog %d vers %d\n", |
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89 | prognum, versnum); |
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90 | return (-1); |
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91 | } |
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92 | pl = (struct prog_lst *)malloc(sizeof(struct prog_lst)); |
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93 | if (pl == NULL) { |
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94 | (void) fprintf(stderr, "registerrpc: out of memory\n"); |
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95 | return (-1); |
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96 | } |
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97 | pl->p_progname = progname; |
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98 | pl->p_prognum = prognum; |
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99 | pl->p_procnum = procnum; |
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100 | pl->p_inproc = inproc; |
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101 | pl->p_outproc = outproc; |
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102 | pl->p_nxt = proglst; |
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103 | proglst = pl; |
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104 | return (0); |
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105 | } |
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106 | |
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107 | static void |
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108 | universal( |
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109 | struct svc_req *rqstp, |
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110 | SVCXPRT *atransp ) |
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111 | { |
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112 | int prog, proc; |
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113 | char *outdata; |
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114 | char xdrbuf[UDPMSGSIZE]; |
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115 | struct prog_lst *lpl; |
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116 | |
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117 | /* |
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118 | * enforce "procnum 0 is echo" convention |
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119 | */ |
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120 | if (rqstp->rq_proc == NULLPROC) { |
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121 | if (svc_sendreply(atransp, xdr_void, NULL) == FALSE) { |
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122 | (void) fprintf(stderr, "xxx\n"); |
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123 | exit(1); |
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124 | } |
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125 | return; |
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126 | } |
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127 | prog = rqstp->rq_prog; |
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128 | proc = rqstp->rq_proc; |
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129 | for (lpl = proglst; lpl != NULL; lpl = lpl->p_nxt) |
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130 | if (lpl->p_prognum == prog && lpl->p_procnum == proc) { |
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131 | /* decode arguments into a CLEAN buffer */ |
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132 | memset(xdrbuf, 0, sizeof(xdrbuf)); /* required ! */ |
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133 | if (!svc_getargs(atransp, lpl->p_inproc, xdrbuf)) { |
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134 | svcerr_decode(atransp); |
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135 | return; |
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136 | } |
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137 | outdata = (*(lpl->p_progname))(xdrbuf); |
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138 | if (outdata == NULL && lpl->p_outproc != xdr_void) |
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139 | /* there was an error */ |
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140 | return; |
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141 | if (!svc_sendreply(atransp, lpl->p_outproc, outdata)) { |
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142 | (void) fprintf(stderr, |
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143 | "trouble replying to prog %d\n", |
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144 | lpl->p_prognum); |
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145 | exit(1); |
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146 | } |
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147 | /* free the decoded arguments */ |
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148 | (void)svc_freeargs(atransp, lpl->p_inproc, xdrbuf); |
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149 | return; |
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150 | } |
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151 | (void) fprintf(stderr, "never registered prog %d\n", prog); |
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152 | exit(1); |
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153 | } |
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