1 | /*****************************************************************************
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2 | * pap.h - PPP Password Authentication Protocol header file.
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3 | *
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4 | * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
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5 | * portions Copyright (c) 1997 Global Election Systems Inc.
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6 | *
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7 | * The authors hereby grant permission to use, copy, modify, distribute,
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8 | * and license this software and its documentation for any purpose, provided
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9 | * that existing copyright notices are retained in all copies and that this
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10 | * notice and the following disclaimer are included verbatim in any
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11 | * distributions. No written agreement, license, or royalty fee is required
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12 | * for any of the authorized uses.
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13 | *
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14 | * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
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15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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17 | * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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24 | *
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25 | ******************************************************************************
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26 | * REVISION HISTORY
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27 | *
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28 | * 03-01-01 Marc Boucher <marc@mbsi.ca>
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29 | * Ported to lwIP.
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30 | * 97-12-04 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
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31 | * Original derived from BSD codes.
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32 | *****************************************************************************/
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33 | /*
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34 | * upap.h - User/Password Authentication Protocol definitions.
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35 | *
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36 | * Copyright (c) 1989 Carnegie Mellon University.
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37 | * All rights reserved.
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38 | *
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39 | * Redistribution and use in source and binary forms are permitted
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40 | * provided that the above copyright notice and this paragraph are
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41 | * duplicated in all such forms and that any documentation,
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42 | * advertising materials, and other materials related to such
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43 | * distribution and use acknowledge that the software was developed
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44 | * by Carnegie Mellon University. The name of the
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45 | * University may not be used to endorse or promote products derived
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46 | * from this software without specific prior written permission.
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47 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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48 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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49 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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50 | */
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51 |
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52 | #ifndef PAP_H
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53 | #define PAP_H
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54 |
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55 | #if PAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
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56 |
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57 | /*
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58 | * Packet header = Code, id, length.
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59 | */
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60 | #define UPAP_HEADERLEN (sizeof (u_char) + sizeof (u_char) + sizeof (u_short))
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61 |
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62 |
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63 | /*
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64 | * UPAP codes.
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65 | */
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66 | #define UPAP_AUTHREQ 1 /* Authenticate-Request */
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67 | #define UPAP_AUTHACK 2 /* Authenticate-Ack */
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68 | #define UPAP_AUTHNAK 3 /* Authenticate-Nak */
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69 |
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70 | /*
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71 | * Each interface is described by upap structure.
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72 | */
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73 | typedef struct upap_state {
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74 | int us_unit; /* Interface unit number */
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75 | const char *us_user; /* User */
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76 | int us_userlen; /* User length */
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77 | const char *us_passwd; /* Password */
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78 | int us_passwdlen; /* Password length */
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79 | int us_clientstate; /* Client state */
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80 | int us_serverstate; /* Server state */
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81 | u_char us_id; /* Current id */
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82 | int us_timeouttime; /* Timeout (seconds) for auth-req retrans. */
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83 | int us_transmits; /* Number of auth-reqs sent */
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84 | int us_maxtransmits; /* Maximum number of auth-reqs to send */
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85 | int us_reqtimeout; /* Time to wait for auth-req from peer */
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86 | } upap_state;
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87 |
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88 | /*
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89 | * Client states.
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90 | */
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91 | #define UPAPCS_INITIAL 0 /* Connection down */
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92 | #define UPAPCS_CLOSED 1 /* Connection up, haven't requested auth */
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93 | #define UPAPCS_PENDING 2 /* Connection down, have requested auth */
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94 | #define UPAPCS_AUTHREQ 3 /* We've sent an Authenticate-Request */
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95 | #define UPAPCS_OPEN 4 /* We've received an Ack */
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96 | #define UPAPCS_BADAUTH 5 /* We've received a Nak */
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97 |
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98 | /*
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99 | * Server states.
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100 | */
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101 | #define UPAPSS_INITIAL 0 /* Connection down */
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102 | #define UPAPSS_CLOSED 1 /* Connection up, haven't requested auth */
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103 | #define UPAPSS_PENDING 2 /* Connection down, have requested auth */
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104 | #define UPAPSS_LISTEN 3 /* Listening for an Authenticate */
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105 | #define UPAPSS_OPEN 4 /* We've sent an Ack */
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106 | #define UPAPSS_BADAUTH 5 /* We've sent a Nak */
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107 |
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108 |
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109 | extern upap_state upap[];
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110 |
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111 | void upap_authwithpeer (int, char *, char *);
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112 | void upap_authpeer (int);
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113 |
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114 | extern struct protent pap_protent;
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115 |
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116 | #endif /* PAP_SUPPORT */
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117 |
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118 | #endif /* PAP_H */
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