clnt_generic.c 3.2 KB

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  1. /* @(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC */
  2. /*
  3. * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  4. * unrestricted use provided that this legend is included on all tape
  5. * media and as a part of the software program in whole or part. Users
  6. * may copy or modify Sun RPC without charge, but are not authorized
  7. * to license or distribute it to anyone else except as part of a product or
  8. * program developed by the user.
  9. *
  10. * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  11. * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  12. * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  13. *
  14. * Sun RPC is provided with no support and without any obligation on the
  15. * part of Sun Microsystems, Inc. to assist in its use, correction,
  16. * modification or enhancement.
  17. *
  18. * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  19. * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  20. * OR ANY PART THEREOF.
  21. *
  22. * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  23. * or profits or other special, indirect and consequential damages, even if
  24. * Sun has been advised of the possibility of such damages.
  25. *
  26. * Sun Microsystems, Inc.
  27. * 2550 Garcia Avenue
  28. * Mountain View, California 94043
  29. */
  30. #define __FORCE_GLIBC
  31. #include <features.h>
  32. /*
  33. * Copyright (C) 1987, Sun Microsystems, Inc.
  34. */
  35. #include <rpc/rpc.h>
  36. #include <sys/socket.h>
  37. #include <sys/errno.h>
  38. #include <netdb.h>
  39. /*
  40. * Generic client creation: takes (hostname, program-number, protocol) and
  41. * returns client handle. Default options are set, which the user can
  42. * change using the rpc equivalent of ioctl()'s.
  43. */
  44. CLIENT *clnt_create __P ((const char *hostname, const u_long prog,
  45. const u_long vers, const char *proto))
  46. {
  47. struct hostent *h;
  48. struct protoent *p;
  49. struct sockaddr_in sin;
  50. int sock;
  51. struct timeval tv;
  52. CLIENT *client;
  53. h = gethostbyname(hostname);
  54. if (h == NULL) {
  55. rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
  56. return (NULL);
  57. }
  58. if (h->h_addrtype != AF_INET) {
  59. /*
  60. * Only support INET for now
  61. */
  62. rpc_createerr.cf_stat = RPC_SYSTEMERROR;
  63. rpc_createerr.cf_error.re_errno = EAFNOSUPPORT;
  64. return (NULL);
  65. }
  66. #ifdef __linux__
  67. bzero((char *) &sin, sizeof(sin));
  68. #endif
  69. sin.sin_family = h->h_addrtype;
  70. sin.sin_port = 0;
  71. #ifndef __linux__
  72. bzero(sin.sin_zero, sizeof(sin.sin_zero));
  73. #endif
  74. bcopy(h->h_addr, (char *) &sin.sin_addr, h->h_length);
  75. p = getprotobyname(proto);
  76. if (p == NULL) {
  77. rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
  78. rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
  79. return (NULL);
  80. }
  81. sock = RPC_ANYSOCK;
  82. switch (p->p_proto) {
  83. case IPPROTO_UDP:
  84. tv.tv_sec = 5;
  85. tv.tv_usec = 0;
  86. client = clntudp_create(&sin, prog, vers, tv, &sock);
  87. if (client == NULL) {
  88. return (NULL);
  89. }
  90. tv.tv_sec = 25;
  91. clnt_control(client, CLSET_TIMEOUT, (char*)&tv);
  92. break;
  93. case IPPROTO_TCP:
  94. client = clnttcp_create(&sin, prog, vers, &sock, 0, 0);
  95. if (client == NULL) {
  96. return (NULL);
  97. }
  98. tv.tv_sec = 25;
  99. tv.tv_usec = 0;
  100. clnt_control(client, CLSET_TIMEOUT, (char*)&tv);
  101. break;
  102. default:
  103. rpc_createerr.cf_stat = RPC_SYSTEMERROR;
  104. rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
  105. return (NULL);
  106. }
  107. return (client);
  108. }