1 | |
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2 | #if !defined(lint) && defined(SCCSIDS) |
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3 | static char sccsid[] = "@(#)svc_auth.c 2.1 88/08/07 4.0 RPCSRC; from 1.19 87/08/11 Copyr 1984 Sun Micro"; |
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4 | #endif |
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5 | /* |
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6 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for |
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7 | * unrestricted use provided that this legend is included on all tape |
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8 | * media and as a part of the software program in whole or part. Users |
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9 | * may copy or modify Sun RPC without charge, but are not authorized |
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10 | * to license or distribute it to anyone else except as part of a product or |
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11 | * program developed by the user. |
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12 | * |
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13 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
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14 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR |
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15 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. |
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16 | * |
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17 | * Sun RPC is provided with no support and without any obligation on the |
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18 | * part of Sun Microsystems, Inc. to assist in its use, correction, |
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19 | * modification or enhancement. |
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20 | * |
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21 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
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22 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC |
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23 | * OR ANY PART THEREOF. |
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24 | * |
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25 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
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26 | * or profits or other special, indirect and consequential damages, even if |
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27 | * Sun has been advised of the possibility of such damages. |
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28 | * |
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29 | * Sun Microsystems, Inc. |
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30 | * 2550 Garcia Avenue |
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31 | * Mountain View, California 94043 |
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32 | */ |
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33 | |
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34 | /* |
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35 | * svc_auth_nodes.c, Server-side rpc authenticator interface, |
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36 | * *WITHOUT* DES authentication. |
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37 | * |
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38 | * Copyright (C) 1984, Sun Microsystems, Inc. |
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39 | */ |
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40 | |
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41 | #include <rpc/rpc.h> |
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42 | |
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43 | /* |
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44 | * svcauthsw is the bdevsw of server side authentication. |
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45 | * |
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46 | * Server side authenticators are called from authenticate by |
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47 | * using the client auth struct flavor field to index into svcauthsw. |
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48 | * The server auth flavors must implement a routine that looks |
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49 | * like: |
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50 | * |
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51 | * enum auth_stat |
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52 | * flavorx_auth(rqst, msg) |
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53 | * register struct svc_req *rqst; |
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54 | * register struct rpc_msg *msg; |
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55 | * |
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56 | */ |
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57 | |
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58 | enum auth_stat _svcauth_null(); /* no authentication */ |
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59 | enum auth_stat _svcauth_unix(); /* unix style (uid, gids) */ |
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60 | enum auth_stat _svcauth_short(); /* short hand unix style */ |
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61 | |
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62 | static struct { |
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63 | enum auth_stat (*authenticator)(); |
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64 | } svcauthsw[] = { |
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65 | { |
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66 | _svcauth_null, /* AUTH_NULL */ |
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67 | #ifdef MR |
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68 | _svcauth_unix, /* AUTH_UNIX */ |
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69 | _svcauth_short /* AUTH_SHORT */ |
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70 | #endif |
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71 | } |
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72 | }; |
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73 | |
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74 | #ifdef MR |
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75 | #define AUTH_MAX 2 /* HIGHEST AUTH NUMBER */ |
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76 | #else |
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77 | #define AUTH_MAX 0 /* HIGHEST AUTH NUMBER */ |
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78 | #endif |
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79 | |
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80 | |
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81 | /* |
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82 | * The call rpc message, msg has been obtained from the wire. The msg contains |
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83 | * the raw form of credentials and verifiers. authenticate returns AUTH_OK |
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84 | * if the msg is successfully authenticated. If AUTH_OK then the routine also |
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85 | * does the following things: |
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86 | * set rqst->rq_xprt->verf to the appropriate response verifier; |
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87 | * sets rqst->rq_client_cred to the "cooked" form of the credentials. |
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88 | * |
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89 | * NB: rqst->rq_cxprt->verf must be pre-alloctaed; |
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90 | * its length is set appropriately. |
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91 | * |
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92 | * The caller still owns and is responsible for msg->u.cmb.cred and |
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93 | * msg->u.cmb.verf. The authentication system retains ownership of |
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94 | * rqst->rq_client_cred, the cooked credentials. |
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95 | * |
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96 | * There is an assumption that any flavour less than AUTH_NULL is |
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97 | * invalid. |
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98 | */ |
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99 | enum auth_stat |
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100 | _authenticate(rqst, msg) |
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101 | register struct svc_req *rqst; |
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102 | struct rpc_msg *msg; |
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103 | { |
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104 | register int cred_flavor; |
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105 | |
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106 | rqst->rq_cred = msg->rm_call.cb_cred; |
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107 | rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor; |
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108 | rqst->rq_xprt->xp_verf.oa_length = 0; |
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109 | cred_flavor = rqst->rq_cred.oa_flavor; |
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110 | if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) { |
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111 | return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg)); |
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112 | } |
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113 | |
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114 | return (AUTH_REJECTEDCRED); |
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115 | } |
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116 | |
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117 | enum auth_stat |
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118 | _svcauth_null(/*rqst, msg*/) |
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119 | /*struct svc_req *rqst; |
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120 | struct rpc_msg *msg;*/ |
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121 | { |
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122 | |
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123 | return (AUTH_OK); |
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124 | } |
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