AIX中RPC使用

最近在看unix网络编程卷二，在看到sun rpc那一部分的时候，发现几个问题，我是在ibm AIX上面开发，才发现原来真的是不同的UNIX系统差别真的很大，不多说，先上程序，包括三个文件，一个是RPC说明文件，另一个是客户端程序，还有一个是服务端程序。

1，RPC说明文件square.x

 

struct square_in{/* data */long arg1;};struct square_out{/* data */long res1;};program SQUARE_PROG{version SQUARE_VERS{square_out SQUAREPROC( square_in ) = 1;} = 1;} = 0x31230000;

2，客户端程序client.c

 #include <stdlib.h>#include <rpc/rpc.h>#include "square.h"#include <errno.h>#include <stdio.h>int main (int argc, char const* argv[]){CLIENT *cl;square_in in;square_out *outp;if( argc != 3 ){perror("usage: client <hostname> <integer_value");}cl = clnt_create( argv[1], SQUARE_PROG, SQUARE_VERS, "tcp");auth_destroy( cl->cl_auth );cl->cl_auth = authsys_create_default();in.arg1 = atol( argv[2] );if( ( outp = squareproc_1( &in, cl ) ) == NULL ){printf("%s", clnt_sperror( cl, argv[1]) );}printf("result: %ld/n", outp -> res1 );return 0;}

 

3,服务端程序server.c

#include "square.h"

square_out * squareproc_1( square_in *inp, struct svc_req *rqstp ){
 static square_out out;
 
 if (rqstp->rq_cred.oa_flavor == 1) {
  struct authunix_parms *au;

  au = (struct authunix_parms  *)rqstp->rq_clntcred;
  printf("AUTH_SYS: host %s, uid %ld, gid %ld/n", au->aup_machname, (long) au->aup_uid, (long) au->aup_gid);
 } 
 
 out.res1 = inp -> arg1 * inp -> arg1;
 return (&out);
}

 

程序编译运行过程：

1, rpcgen square.x

     生成square.h, square_clnt.c, square_svc.c,square_xdr.c

2, gcc server.c square_svc.c square_xdr.c -o server -lnsl

3, gcc client.c square_clnt.c square_xdr.c -o client -lnsl

4, ./server

5, ./client localhost 5

 

程序运行结果：

client:

        result: 25

server:

        AUTH_SYS: host root, uid 0, gid 0

 

注意点：

1,在UNIX网络编程一书中将square_out * squareproc_1( square_in *inp, struct svc_req *rqstp )写成是square_out * squareproc_1_svc( square_in *inp, struct svc_req *rqstp ),经过对比源程序，发现在AIX中应该去掉

2, 在UNIX网络编程中将au = (struct authunix_parms  *)rqstp->rq_clntcred;写成au = ( struct authsys_parms * )rqstp->rq_clntcred;,在AIX中得用前者，因为后者是用的Solaris