1 | /* |
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2 | * upap.h - User/Password Authentication Protocol definitions. |
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3 | * |
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4 | * Copyright (c) 1989 Carnegie Mellon University. |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms are permitted |
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8 | * provided that the above copyright notice and this paragraph are |
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9 | * duplicated in all such forms and that any documentation, |
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10 | * advertising materials, and other materials related to such |
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11 | * distribution and use acknowledge that the software was developed |
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12 | * by Carnegie Mellon University. The name of the |
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13 | * University may not be used to endorse or promote products derived |
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14 | * from this software without specific prior written permission. |
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15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
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16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
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17 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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18 | * |
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19 | * $Id$ |
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20 | */ |
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21 | |
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22 | /* |
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23 | * Packet header = Code, id, length. |
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24 | */ |
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25 | #define UPAP_HEADERLEN 4 |
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26 | |
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27 | |
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28 | /* |
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29 | * UPAP codes. |
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30 | */ |
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31 | #define UPAP_AUTHREQ 1 /* Authenticate-Request */ |
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32 | #define UPAP_AUTHACK 2 /* Authenticate-Ack */ |
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33 | #define UPAP_AUTHNAK 3 /* Authenticate-Nak */ |
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34 | |
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35 | |
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36 | /* |
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37 | * Each interface is described by upap structure. |
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38 | */ |
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39 | typedef struct upap_state { |
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40 | int us_unit; /* Interface unit number */ |
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41 | char *us_user; /* User */ |
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42 | int us_userlen; /* User length */ |
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43 | char *us_passwd; /* Password */ |
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44 | int us_passwdlen; /* Password length */ |
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45 | int us_clientstate; /* Client state */ |
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46 | int us_serverstate; /* Server state */ |
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47 | u_char us_id; /* Current id */ |
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48 | int us_timeouttime; /* Timeout (seconds) for auth-req retrans. */ |
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49 | int us_transmits; /* Number of auth-reqs sent */ |
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50 | int us_maxtransmits; /* Maximum number of auth-reqs to send */ |
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51 | int us_reqtimeout; /* Time to wait for auth-req from peer */ |
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52 | } upap_state; |
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53 | |
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54 | |
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55 | /* |
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56 | * Client states. |
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57 | */ |
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58 | #define UPAPCS_INITIAL 0 /* Connection down */ |
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59 | #define UPAPCS_CLOSED 1 /* Connection up, haven't requested auth */ |
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60 | #define UPAPCS_PENDING 2 /* Connection down, have requested auth */ |
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61 | #define UPAPCS_AUTHREQ 3 /* We've sent an Authenticate-Request */ |
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62 | #define UPAPCS_OPEN 4 /* We've received an Ack */ |
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63 | #define UPAPCS_BADAUTH 5 /* We've received a Nak */ |
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64 | |
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65 | /* |
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66 | * Server states. |
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67 | */ |
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68 | #define UPAPSS_INITIAL 0 /* Connection down */ |
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69 | #define UPAPSS_CLOSED 1 /* Connection up, haven't requested auth */ |
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70 | #define UPAPSS_PENDING 2 /* Connection down, have requested auth */ |
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71 | #define UPAPSS_LISTEN 3 /* Listening for an Authenticate */ |
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72 | #define UPAPSS_OPEN 4 /* We've sent an Ack */ |
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73 | #define UPAPSS_BADAUTH 5 /* We've sent a Nak */ |
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74 | |
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75 | |
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76 | /* |
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77 | * Timeouts. |
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78 | */ |
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79 | #define UPAP_DEFTIMEOUT 5 /* Timeout (seconds) for retransmitting req */ |
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80 | #define UPAP_DEFREQTIME 30 /* Time to wait for auth-req from peer */ |
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81 | |
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82 | extern upap_state upap[]; |
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83 | |
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84 | void upap_authwithpeer(int, char *, char *); |
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85 | void upap_authpeer(int); |
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86 | |
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87 | extern struct protent pap_protent; |
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