annotate packages/net/tcpip/current/include/netinet/ip_proxy.h @ 208:e0c0827131d1 ecos

Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 95f3e12a6327
children 74dbf4c3f2e1
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1 //==========================================================================
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2 //
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3 // include/netinet/ip_proxy.h
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4 //
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5 //
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6 //
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7 //==========================================================================
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8 //####BSDCOPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 //
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12 // Portions of this software may have been derived from OpenBSD or other sources,
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13 // and are covered by the appropriate copyright disclaimers included herein.
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14 //
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15 // -------------------------------------------
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16 //
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17 //####BSDCOPYRIGHTEND####
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18 //==========================================================================
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19 //#####DESCRIPTIONBEGIN####
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20 //
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21 // Author(s): gthomas
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22 // Contributors: gthomas
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23 // Date: 2000-01-10
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24 // Purpose:
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25 // Description:
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26 //
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27 //
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28 //####DESCRIPTIONEND####
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29 //
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30 //==========================================================================
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31
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32
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33 /* $OpenBSD: ip_proxy.h,v 1.4 1999/12/15 05:20:23 kjell Exp $ */
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34 /*
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35 * Copyright (C) 1997-1998 by Darren Reed.
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36 *
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37 * Redistribution and use in source and binary forms are permitted
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38 * provided that this notice is preserved and due credit is given
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39 * to the original author and the contributors.
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40 *
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41 */
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42
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43 #ifndef _NETINET_IP_PROXY_H__
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44 #define _NETINET_IP_PROXY_H__
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45
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46 #ifndef SOLARIS
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47 #define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
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48 #endif
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49
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50 #ifndef APR_LABELLEN
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51 #define APR_LABELLEN 16
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52 #endif
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53 #define AP_SESS_SIZE 53
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54
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55 struct nat;
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56 struct ipnat;
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57
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58 typedef struct ap_tcp {
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59 u_short apt_sport; /* source port */
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60 u_short apt_dport; /* destination port */
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61 short apt_sel[2]; /* {seq,ack}{off,min} set selector */
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62 short apt_seqoff[2]; /* sequence # difference */
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63 tcp_seq apt_seqmin[2]; /* don't change seq-off until after this */
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64 short apt_ackoff[2]; /* sequence # difference */
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65 tcp_seq apt_ackmin[2]; /* don't change seq-off until after this */
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66 u_char apt_state[2]; /* connection state */
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67 } ap_tcp_t;
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68
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69 typedef struct ap_udp {
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70 u_short apu_sport; /* source port */
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71 u_short apu_dport; /* destination port */
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72 } ap_udp_t;
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73
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74 typedef struct ap_session {
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75 struct aproxy *aps_apr;
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76 union {
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77 struct ap_tcp apu_tcp;
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78 struct ap_udp apu_udp;
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79 } aps_un;
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80 u_int aps_flags;
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81 U_QUAD_T aps_bytes; /* bytes sent */
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82 U_QUAD_T aps_pkts; /* packets sent */
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83 void *aps_nat; /* pointer back to nat struct */
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84 void *aps_data; /* private data */
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85 int aps_p; /* protocol */
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86 int aps_psiz; /* size of private data */
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87 struct ap_session *aps_hnext;
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88 struct ap_session *aps_next;
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89 } ap_session_t ;
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90
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91 #define aps_sport aps_un.apu_tcp.apt_sport
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92 #define aps_dport aps_un.apu_tcp.apt_dport
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93 #define aps_sel aps_un.apu_tcp.apt_sel
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94 #define aps_seqoff aps_un.apu_tcp.apt_seqoff
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95 #define aps_seqmin aps_un.apu_tcp.apt_seqmin
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96 #define aps_state aps_un.apu_tcp.apt_state
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97 #define aps_ackoff aps_un.apu_tcp.apt_ackoff
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98 #define aps_ackmin aps_un.apu_tcp.apt_ackmin
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99
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100
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101 typedef struct aproxy {
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102 char apr_label[APR_LABELLEN]; /* Proxy label # */
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103 u_char apr_p; /* protocol */
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104 int apr_ref; /* +1 per rule referencing it */
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105 int apr_flags;
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106 int (* apr_init) __P((void));
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107 int (* apr_new) __P((fr_info_t *, ip_t *,
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108 ap_session_t *, struct nat *));
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109 int (* apr_inpkt) __P((fr_info_t *, ip_t *,
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110 ap_session_t *, struct nat *));
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111 int (* apr_outpkt) __P((fr_info_t *, ip_t *,
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112 ap_session_t *, struct nat *));
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113 } aproxy_t;
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114
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115 #define APR_DELETE 1
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116
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117
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118 /*
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119 * Real audio proxy structure and #defines
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120 */
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121 typedef struct {
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122 int rap_seenpna;
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123 int rap_seenver;
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124 int rap_version;
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125 int rap_eos; /* End Of Startup */
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126 int rap_gotid;
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127 int rap_gotlen;
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128 int rap_mode;
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129 int rap_sdone;
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130 u_short rap_plport;
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131 u_short rap_prport;
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132 u_short rap_srport;
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133 char rap_svr[19];
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134 u_32_t rap_sbf; /* flag to indicate which of the 19 bytes have
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135 * been filled
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136 */
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137 tcp_seq rap_sseq;
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138 } raudio_t;
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139
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140 #define RA_ID_END 0
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141 #define RA_ID_UDP 1
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142 #define RA_ID_ROBUST 7
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143
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144 #define RAP_M_UDP 1
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145 #define RAP_M_ROBUST 2
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146 #define RAP_M_TCP 4
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147 #define RAP_M_UDP_ROBUST (RAP_M_UDP|RAP_M_ROBUST)
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148
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149
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150 extern ap_session_t *ap_sess_tab[AP_SESS_SIZE];
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151 extern ap_session_t *ap_sess_list;
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152 extern aproxy_t ap_proxies[];
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153
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154 extern int appr_init __P((void));
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155 extern int appr_ok __P((ip_t *, tcphdr_t *, struct ipnat *));
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156 extern void appr_free __P((aproxy_t *));
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157 extern void aps_free __P((ap_session_t *));
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158 extern int appr_check __P((ip_t *, fr_info_t *, struct nat *));
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159 extern aproxy_t *appr_match __P((u_int, char *));
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160
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161 #endif /* _NETINET_IP_PROXY_H__ */