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1 | office | 1 | /* |
2 | * ecp.c - PPP Encryption Control Protocol. |
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3 | * |
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4 | * Copyright (c) 2002 Google, Inc. |
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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, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * |
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11 | * 1. Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * |
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14 | * 2. Redistributions in binary form must reproduce the above copyright |
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15 | * notice, this list of conditions and the following disclaimer in |
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16 | * the documentation and/or other materials provided with the |
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17 | * distribution. |
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18 | * |
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19 | * 3. The name(s) of the authors of this software must not be used to |
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20 | * endorse or promote products derived from this software without |
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21 | * prior written permission. |
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22 | * |
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23 | * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO |
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24 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
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25 | * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY |
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26 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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27 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
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28 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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29 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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30 | * |
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31 | * Derived from ccp.c, which is: |
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32 | * |
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33 | * Copyright (c) 1994-2002 Paul Mackerras. All rights reserved. |
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34 | * |
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35 | * Redistribution and use in source and binary forms, with or without |
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36 | * modification, are permitted provided that the following conditions |
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37 | * are met: |
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38 | * |
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39 | * 1. Redistributions of source code must retain the above copyright |
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40 | * notice, this list of conditions and the following disclaimer. |
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41 | * |
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42 | * 2. The name(s) of the authors of this software must not be used to |
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43 | * endorse or promote products derived from this software without |
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44 | * prior written permission. |
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45 | * |
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46 | * 3. Redistributions of any form whatsoever must retain the following |
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47 | * acknowledgment: |
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48 | * "This product includes software developed by Paul Mackerras |
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49 | * <paulus@samba.org>". |
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50 | * |
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51 | * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO |
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52 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
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53 | * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY |
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54 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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55 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
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56 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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57 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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58 | */ |
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59 | |||
60 | #include "netif/ppp/ppp_opts.h" |
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61 | #if PPP_SUPPORT && ECP_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
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62 | |||
63 | #include <string.h> |
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64 | |||
65 | #include "netif/ppp/ppp_impl.h" |
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66 | |||
67 | #include "netif/ppp/fsm.h" |
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68 | #include "netif/ppp/ecp.h" |
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69 | |||
70 | #if PPP_OPTIONS |
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71 | static option_t ecp_option_list[] = { |
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72 | { "noecp", o_bool, &ecp_protent.enabled_flag, |
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73 | "Disable ECP negotiation" }, |
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74 | { "-ecp", o_bool, &ecp_protent.enabled_flag, |
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75 | "Disable ECP negotiation", OPT_ALIAS }, |
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76 | |||
77 | { NULL } |
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78 | }; |
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79 | #endif /* PPP_OPTIONS */ |
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80 | |||
81 | /* |
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82 | * Protocol entry points from main code. |
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83 | */ |
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84 | static void ecp_init (int unit); |
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85 | /* |
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86 | static void ecp_open (int unit); |
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87 | static void ecp_close (int unit, char *); |
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88 | static void ecp_lowerup (int unit); |
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89 | static void ecp_lowerdown (int); |
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90 | static void ecp_input (int unit, u_char *pkt, int len); |
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91 | static void ecp_protrej (int unit); |
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92 | */ |
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93 | #if PRINTPKT_SUPPORT |
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94 | static int ecp_printpkt (const u_char *pkt, int len, |
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95 | void (*printer) (void *, char *, ...), |
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96 | void *arg); |
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97 | #endif /* PRINTPKT_SUPPORT */ |
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98 | /* |
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99 | static void ecp_datainput (int unit, u_char *pkt, int len); |
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100 | */ |
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101 | |||
102 | const struct protent ecp_protent = { |
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103 | PPP_ECP, |
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104 | ecp_init, |
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105 | NULL, /* ecp_input, */ |
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106 | NULL, /* ecp_protrej, */ |
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107 | NULL, /* ecp_lowerup, */ |
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108 | NULL, /* ecp_lowerdown, */ |
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109 | NULL, /* ecp_open, */ |
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110 | NULL, /* ecp_close, */ |
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111 | #if PRINTPKT_SUPPORT |
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112 | ecp_printpkt, |
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113 | #endif /* PRINTPKT_SUPPORT */ |
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114 | #if PPP_DATAINPUT |
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115 | NULL, /* ecp_datainput, */ |
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116 | #endif /* PPP_DATAINPUT */ |
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117 | #if PRINTPKT_SUPPORT |
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118 | "ECP", |
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119 | "Encrypted", |
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120 | #endif /* PRINTPKT_SUPPORT */ |
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121 | #if PPP_OPTIONS |
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122 | ecp_option_list, |
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123 | NULL, |
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124 | #endif /* PPP_OPTIONS */ |
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125 | #if DEMAND_SUPPORT |
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126 | NULL, |
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127 | NULL |
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128 | #endif /* DEMAND_SUPPORT */ |
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129 | }; |
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130 | |||
131 | fsm ecp_fsm[NUM_PPP]; |
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132 | ecp_options ecp_wantoptions[NUM_PPP]; /* what to request the peer to use */ |
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133 | ecp_options ecp_gotoptions[NUM_PPP]; /* what the peer agreed to do */ |
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134 | ecp_options ecp_allowoptions[NUM_PPP]; /* what we'll agree to do */ |
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135 | ecp_options ecp_hisoptions[NUM_PPP]; /* what we agreed to do */ |
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136 | |||
137 | static const fsm_callbacks ecp_callbacks = { |
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138 | NULL, /* ecp_resetci, */ |
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139 | NULL, /* ecp_cilen, */ |
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140 | NULL, /* ecp_addci, */ |
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141 | NULL, /* ecp_ackci, */ |
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142 | NULL, /* ecp_nakci, */ |
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143 | NULL, /* ecp_rejci, */ |
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144 | NULL, /* ecp_reqci, */ |
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145 | NULL, /* ecp_up, */ |
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146 | NULL, /* ecp_down, */ |
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147 | NULL, |
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148 | NULL, |
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149 | NULL, |
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150 | NULL, |
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151 | NULL, /* ecp_extcode, */ |
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152 | "ECP" |
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153 | }; |
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154 | |||
155 | /* |
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156 | * ecp_init - initialize ECP. |
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157 | */ |
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158 | static void |
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159 | ecp_init(unit) |
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160 | int unit; |
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161 | { |
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162 | fsm *f = &ecp_fsm[unit]; |
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163 | |||
164 | f->unit = unit; |
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165 | f->protocol = PPP_ECP; |
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166 | f->callbacks = &ecp_callbacks; |
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167 | fsm_init(f); |
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168 | |||
169 | #if 0 /* Not necessary, everything is cleared in ppp_new() */ |
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170 | memset(&ecp_wantoptions[unit], 0, sizeof(ecp_options)); |
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171 | memset(&ecp_gotoptions[unit], 0, sizeof(ecp_options)); |
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172 | memset(&ecp_allowoptions[unit], 0, sizeof(ecp_options)); |
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173 | memset(&ecp_hisoptions[unit], 0, sizeof(ecp_options)); |
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174 | #endif /* 0 */ |
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175 | |||
176 | } |
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177 | |||
178 | |||
179 | #if PRINTPKT_SUPPORT |
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180 | static int |
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181 | ecp_printpkt(p, plen, printer, arg) |
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182 | const u_char *p; |
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183 | int plen; |
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184 | void (*printer) (void *, char *, ...); |
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185 | void *arg; |
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186 | { |
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187 | return 0; |
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188 | } |
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189 | #endif /* PRINTPKT_SUPPORT */ |
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190 | |||
191 | #endif /* PPP_SUPPORT && ECP_SUPPORT */ |