1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | /* |
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4 | * Copyright (c) 1998-2007 The TCPDUMP project |
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5 | * Copyright (c) 2009 Florian Forster |
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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: (1) source code |
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9 | * distributions retain the above copyright notice and this paragraph |
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10 | * in its entirety, and (2) distributions including binary code include |
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11 | * the above copyright notice and this paragraph in its entirety in |
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12 | * the documentation or other materials provided with the distribution. |
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13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND |
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14 | * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT |
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15 | * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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16 | * FOR A PARTICULAR PURPOSE. |
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17 | * |
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18 | * Optimized Link State Protocl (OLSR) as per rfc3626 |
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19 | * |
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20 | * Original code by Hannes Gredler <hannes@juniper.net> |
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21 | * IPv6 additions by Florian Forster <octo at verplant.org> |
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22 | */ |
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23 | |
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24 | #ifdef HAVE_CONFIG_H |
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25 | #include "config.h" |
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26 | #endif |
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27 | |
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28 | #include <tcpdump-stdinc.h> |
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29 | |
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30 | #include <stdio.h> |
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31 | #include <string.h> |
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32 | |
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33 | #include "interface.h" |
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34 | #include "addrtoname.h" |
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35 | #include "extract.h" |
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36 | #include "ip.h" |
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37 | |
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38 | /* |
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39 | * RFC 3626 common header |
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40 | * |
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41 | * 0 1 2 3 |
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42 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
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43 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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44 | * | Packet Length | Packet Sequence Number | |
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45 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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46 | * | Message Type | Vtime | Message Size | |
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47 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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48 | * | Originator Address | |
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49 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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50 | * | Time To Live | Hop Count | Message Sequence Number | |
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51 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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52 | * | | |
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53 | * : MESSAGE : |
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54 | * | | |
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55 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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56 | * | Message Type | Vtime | Message Size | |
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57 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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58 | * | Originator Address | |
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59 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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60 | * | Time To Live | Hop Count | Message Sequence Number | |
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61 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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62 | * | | |
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63 | * : MESSAGE : |
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64 | * | | |
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65 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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66 | * : : |
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67 | */ |
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68 | |
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69 | struct olsr_common { |
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70 | u_int8_t packet_len[2]; |
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71 | u_int8_t packet_seq[2]; |
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72 | }; |
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73 | |
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74 | #define OLSR_HELLO_MSG 1 /* rfc3626 */ |
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75 | #define OLSR_TC_MSG 2 /* rfc3626 */ |
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76 | #define OLSR_MID_MSG 3 /* rfc3626 */ |
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77 | #define OLSR_HNA_MSG 4 /* rfc3626 */ |
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78 | #define OLSR_POWERINFO_MSG 128 |
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79 | #define OLSR_NAMESERVICE_MSG 130 |
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80 | #define OLSR_HELLO_LQ_MSG 201 /* LQ extensions olsr.org */ |
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81 | #define OLSR_TC_LQ_MSG 202 /* LQ extensions olsr.org */ |
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82 | |
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83 | static struct tok olsr_msg_values[] = { |
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84 | { OLSR_HELLO_MSG, "Hello" }, |
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85 | { OLSR_TC_MSG, "TC" }, |
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86 | { OLSR_MID_MSG, "MID" }, |
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87 | { OLSR_HNA_MSG, "HNA" }, |
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88 | { OLSR_POWERINFO_MSG, "Powerinfo" }, |
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89 | { OLSR_NAMESERVICE_MSG, "Nameservice" }, |
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90 | { OLSR_HELLO_LQ_MSG, "Hello-LQ" }, |
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91 | { OLSR_TC_LQ_MSG, "TC-LQ" }, |
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92 | { 0, NULL} |
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93 | }; |
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94 | |
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95 | struct olsr_msg4 { |
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96 | u_int8_t msg_type; |
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97 | u_int8_t vtime; |
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98 | u_int8_t msg_len[2]; |
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99 | u_int8_t originator[4]; |
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100 | u_int8_t ttl; |
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101 | u_int8_t hopcount; |
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102 | u_int8_t msg_seq[2]; |
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103 | }; |
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104 | |
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105 | struct olsr_msg6 { |
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106 | u_int8_t msg_type; |
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107 | u_int8_t vtime; |
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108 | u_int8_t msg_len[2]; |
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109 | u_int8_t originator[16]; |
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110 | u_int8_t ttl; |
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111 | u_int8_t hopcount; |
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112 | u_int8_t msg_seq[2]; |
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113 | }; |
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114 | |
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115 | struct olsr_hello { |
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116 | u_int8_t res[2]; |
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117 | u_int8_t htime; |
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118 | u_int8_t will; |
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119 | }; |
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120 | |
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121 | struct olsr_hello_link { |
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122 | u_int8_t link_code; |
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123 | u_int8_t res; |
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124 | u_int8_t len[2]; |
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125 | }; |
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126 | |
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127 | struct olsr_tc { |
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128 | u_int8_t ans_seq[2]; |
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129 | u_int8_t res[2]; |
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130 | }; |
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131 | |
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132 | struct olsr_hna4 { |
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133 | u_int8_t network[4]; |
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134 | u_int8_t mask[4]; |
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135 | }; |
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136 | |
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137 | struct olsr_hna6 { |
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138 | u_int8_t network[16]; |
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139 | u_int8_t mask[16]; |
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140 | }; |
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141 | |
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142 | |
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143 | #define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3) |
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144 | #define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2) |
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145 | |
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146 | static struct tok olsr_link_type_values[] = { |
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147 | { 0, "Unspecified" }, |
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148 | { 1, "Asymmetric" }, |
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149 | { 2, "Symmetric" }, |
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150 | { 3, "Lost" }, |
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151 | { 0, NULL} |
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152 | }; |
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153 | |
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154 | static struct tok olsr_neighbor_type_values[] = { |
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155 | { 0, "Not-Neighbor" }, |
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156 | { 1, "Symmetric" }, |
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157 | { 2, "Symmetric-MPR" }, |
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158 | { 0, NULL} |
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159 | }; |
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160 | |
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161 | struct olsr_lq_neighbor4 { |
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162 | u_int8_t neighbor[4]; |
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163 | u_int8_t link_quality; |
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164 | u_int8_t neighbor_link_quality; |
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165 | u_int8_t res[2]; |
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166 | }; |
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167 | |
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168 | struct olsr_lq_neighbor6 { |
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169 | u_int8_t neighbor[16]; |
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170 | u_int8_t link_quality; |
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171 | u_int8_t neighbor_link_quality; |
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172 | u_int8_t res[2]; |
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173 | }; |
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174 | |
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175 | /* |
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176 | * macro to convert the 8-bit mantissa/exponent to a double float |
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177 | * taken from olsr.org. |
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178 | */ |
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179 | #define VTIME_SCALE_FACTOR 0.0625 |
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180 | #define ME_TO_DOUBLE(me) \ |
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181 | (double)(VTIME_SCALE_FACTOR*(1+(double)(me>>4)/16)*(double)(1<<(me&0x0F))) |
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182 | |
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183 | /* |
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184 | * print a neighbor list with LQ extensions. |
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185 | */ |
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186 | static void |
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187 | olsr_print_lq_neighbor4 (const u_char *msg_data, u_int hello_len) |
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188 | { |
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189 | struct olsr_lq_neighbor4 *lq_neighbor; |
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190 | |
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191 | while (hello_len >= sizeof(struct olsr_lq_neighbor4)) { |
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192 | |
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193 | lq_neighbor = (struct olsr_lq_neighbor4 *)msg_data; |
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194 | |
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195 | printf("\n\t neighbor %s, link-quality %.2lf%%" |
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196 | ", neighbor-link-quality %.2lf%%", |
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197 | ipaddr_string(lq_neighbor->neighbor), |
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198 | ((double)lq_neighbor->link_quality/2.55), |
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199 | ((double)lq_neighbor->neighbor_link_quality/2.55)); |
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200 | |
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201 | msg_data += sizeof(struct olsr_lq_neighbor4); |
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202 | hello_len -= sizeof(struct olsr_lq_neighbor4); |
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203 | } |
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204 | } |
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205 | |
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206 | #if INET6 |
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207 | static void |
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208 | olsr_print_lq_neighbor6 (const u_char *msg_data, u_int hello_len) |
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209 | { |
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210 | struct olsr_lq_neighbor6 *lq_neighbor; |
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211 | |
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212 | while (hello_len >= sizeof(struct olsr_lq_neighbor6)) { |
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213 | |
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214 | lq_neighbor = (struct olsr_lq_neighbor6 *)msg_data; |
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215 | |
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216 | printf("\n\t neighbor %s, link-quality %.2lf%%" |
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217 | ", neighbor-link-quality %.2lf%%", |
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218 | ip6addr_string(lq_neighbor->neighbor), |
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219 | ((double)lq_neighbor->link_quality/2.55), |
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220 | ((double)lq_neighbor->neighbor_link_quality/2.55)); |
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221 | |
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222 | msg_data += sizeof(struct olsr_lq_neighbor6); |
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223 | hello_len -= sizeof(struct olsr_lq_neighbor6); |
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224 | } |
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225 | } |
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226 | #endif /* INET6 */ |
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227 | |
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228 | /* |
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229 | * print a neighbor list. |
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230 | */ |
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231 | static void |
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232 | olsr_print_neighbor (const u_char *msg_data, u_int hello_len) |
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233 | { |
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234 | int neighbor; |
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235 | |
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236 | printf("\n\t neighbor\n\t\t"); |
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237 | neighbor = 1; |
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238 | |
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239 | while (hello_len >= sizeof(struct in_addr)) { |
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240 | |
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241 | /* print 4 neighbors per line */ |
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242 | |
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243 | printf("%s%s", ipaddr_string(msg_data), |
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244 | neighbor % 4 == 0 ? "\n\t\t" : " "); |
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245 | |
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246 | msg_data += sizeof(struct in_addr); |
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247 | hello_len -= sizeof(struct in_addr); |
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248 | } |
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249 | } |
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250 | |
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251 | |
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252 | void |
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253 | olsr_print (const u_char *pptr, u_int length, int is_ipv6) |
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254 | { |
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255 | union { |
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256 | const struct olsr_common *common; |
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257 | const struct olsr_msg4 *msg4; |
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258 | const struct olsr_msg6 *msg6; |
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259 | const struct olsr_hello *hello; |
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260 | const struct olsr_hello_link *hello_link; |
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261 | const struct olsr_tc *tc; |
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262 | const struct olsr_hna4 *hna; |
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263 | } ptr; |
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264 | |
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265 | u_int msg_type, msg_len, msg_tlen, hello_len; |
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266 | u_int16_t name_entry_type, name_entry_len; |
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267 | u_int name_entry_padding; |
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268 | u_int8_t link_type, neighbor_type; |
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269 | const u_char *tptr, *msg_data; |
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270 | |
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271 | tptr = pptr; |
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272 | |
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273 | if (length < sizeof(struct olsr_common)) { |
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274 | goto trunc; |
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275 | } |
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276 | |
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277 | if (!TTEST2(*tptr, sizeof(struct olsr_common))) { |
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278 | goto trunc; |
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279 | } |
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280 | |
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281 | ptr.common = (struct olsr_common *)tptr; |
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282 | length = MIN(length, EXTRACT_16BITS(ptr.common->packet_len)); |
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283 | |
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284 | printf("OLSRv%i, seq 0x%04x, length %u", |
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285 | (is_ipv6 == 0) ? 4 : 6, |
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286 | EXTRACT_16BITS(ptr.common->packet_seq), |
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287 | length); |
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288 | |
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289 | tptr += sizeof(struct olsr_common); |
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290 | |
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291 | /* |
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292 | * In non-verbose mode, just print version. |
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293 | */ |
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294 | if (vflag < 1) { |
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295 | return; |
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296 | } |
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297 | |
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298 | while (tptr < (pptr+length)) { |
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299 | union |
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300 | { |
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301 | struct olsr_msg4 *v4; |
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302 | struct olsr_msg6 *v6; |
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303 | } msgptr; |
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304 | int msg_len_valid = 0; |
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305 | |
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306 | if (!TTEST2(*tptr, sizeof(struct olsr_msg4))) |
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307 | goto trunc; |
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308 | |
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309 | #if INET6 |
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310 | if (is_ipv6) |
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311 | { |
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312 | msgptr.v6 = (struct olsr_msg6 *) tptr; |
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313 | msg_type = msgptr.v6->msg_type; |
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314 | msg_len = EXTRACT_16BITS(msgptr.v6->msg_len); |
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315 | if ((msg_len >= sizeof (struct olsr_msg6)) |
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316 | && (msg_len <= length)) |
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317 | msg_len_valid = 1; |
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318 | |
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319 | /* infinite loop check */ |
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320 | if (msg_type == 0 || msg_len == 0) { |
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321 | return; |
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322 | } |
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323 | |
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324 | printf("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u" |
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325 | "\n\t vtime %.3lfs, msg-seq 0x%04x, length %u%s", |
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326 | tok2str(olsr_msg_values, "Unknown", msg_type), |
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327 | msg_type, ip6addr_string(msgptr.v6->originator), |
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328 | msgptr.v6->ttl, |
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329 | msgptr.v6->hopcount, |
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330 | ME_TO_DOUBLE(msgptr.v6->vtime), |
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331 | EXTRACT_16BITS(msgptr.v6->msg_seq), |
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332 | msg_len, (msg_len_valid == 0) ? " (invalid)" : ""); |
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333 | |
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334 | msg_tlen = msg_len - sizeof(struct olsr_msg6); |
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335 | msg_data = tptr + sizeof(struct olsr_msg6); |
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336 | } |
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337 | else /* (!is_ipv6) */ |
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338 | #endif /* INET6 */ |
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339 | { |
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340 | msgptr.v4 = (struct olsr_msg4 *) tptr; |
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341 | msg_type = msgptr.v4->msg_type; |
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342 | msg_len = EXTRACT_16BITS(msgptr.v4->msg_len); |
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343 | if ((msg_len >= sizeof (struct olsr_msg4)) |
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344 | && (msg_len <= length)) |
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345 | msg_len_valid = 1; |
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346 | |
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347 | /* infinite loop check */ |
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348 | if (msg_type == 0 || msg_len == 0) { |
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349 | return; |
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350 | } |
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351 | |
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352 | printf("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u" |
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353 | "\n\t vtime %.3lfs, msg-seq 0x%04x, length %u%s", |
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354 | tok2str(olsr_msg_values, "Unknown", msg_type), |
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355 | msg_type, ipaddr_string(msgptr.v4->originator), |
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356 | msgptr.v4->ttl, |
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357 | msgptr.v4->hopcount, |
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358 | ME_TO_DOUBLE(msgptr.v4->vtime), |
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359 | EXTRACT_16BITS(msgptr.v4->msg_seq), |
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360 | msg_len, (msg_len_valid == 0) ? " (invalid)" : ""); |
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361 | |
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362 | msg_tlen = msg_len - sizeof(struct olsr_msg4); |
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363 | msg_data = tptr + sizeof(struct olsr_msg4); |
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364 | } |
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365 | |
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366 | switch (msg_type) { |
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367 | case OLSR_HELLO_MSG: |
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368 | case OLSR_HELLO_LQ_MSG: |
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369 | if (!TTEST2(*msg_data, sizeof(struct olsr_hello))) |
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370 | goto trunc; |
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371 | |
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372 | ptr.hello = (struct olsr_hello *)msg_data; |
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373 | printf("\n\t hello-time %.3lfs, MPR willingness %u", |
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374 | ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will); |
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375 | msg_data += sizeof(struct olsr_hello); |
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376 | msg_tlen -= sizeof(struct olsr_hello); |
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377 | |
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378 | while (msg_tlen >= sizeof(struct olsr_hello_link)) { |
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379 | int hello_len_valid = 0; |
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380 | |
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381 | /* |
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382 | * link-type. |
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383 | */ |
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384 | if (!TTEST2(*msg_data, sizeof(struct olsr_hello_link))) |
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385 | goto trunc; |
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386 | |
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387 | ptr.hello_link = (struct olsr_hello_link *)msg_data; |
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388 | |
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389 | hello_len = EXTRACT_16BITS(ptr.hello_link->len); |
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390 | link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code); |
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391 | neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code); |
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392 | |
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393 | if ((hello_len <= msg_tlen) |
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394 | && (hello_len >= sizeof(struct olsr_hello_link))) |
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395 | hello_len_valid = 1; |
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396 | |
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397 | printf("\n\t link-type %s, neighbor-type %s, len %u%s", |
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398 | tok2str(olsr_link_type_values, "Unknown", link_type), |
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399 | tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type), |
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400 | hello_len, |
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401 | (hello_len_valid == 0) ? " (invalid)" : ""); |
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402 | |
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403 | if (hello_len_valid == 0) |
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404 | break; |
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405 | |
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406 | msg_data += sizeof(struct olsr_hello_link); |
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407 | msg_tlen -= sizeof(struct olsr_hello_link); |
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408 | hello_len -= sizeof(struct olsr_hello_link); |
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409 | |
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410 | if (msg_type == OLSR_HELLO_MSG) { |
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411 | olsr_print_neighbor(msg_data, hello_len); |
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412 | } else { |
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413 | #if INET6 |
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414 | if (is_ipv6) |
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415 | olsr_print_lq_neighbor6(msg_data, hello_len); |
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416 | else |
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417 | #endif |
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418 | olsr_print_lq_neighbor4(msg_data, hello_len); |
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419 | } |
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420 | |
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421 | msg_data += hello_len; |
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422 | msg_tlen -= hello_len; |
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423 | } |
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424 | break; |
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425 | |
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426 | case OLSR_TC_MSG: |
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427 | case OLSR_TC_LQ_MSG: |
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428 | if (!TTEST2(*msg_data, sizeof(struct olsr_tc))) |
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429 | goto trunc; |
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430 | |
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431 | ptr.tc = (struct olsr_tc *)msg_data; |
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432 | printf("\n\t advertised neighbor seq 0x%04x", |
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433 | EXTRACT_16BITS(ptr.tc->ans_seq)); |
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434 | msg_data += sizeof(struct olsr_tc); |
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435 | msg_tlen -= sizeof(struct olsr_tc); |
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436 | |
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437 | if (msg_type == OLSR_TC_MSG) { |
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438 | olsr_print_neighbor(msg_data, msg_tlen); |
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439 | } else { |
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440 | #if INET6 |
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441 | if (is_ipv6) |
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442 | olsr_print_lq_neighbor6(msg_data, msg_tlen); |
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443 | else |
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444 | #endif |
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445 | olsr_print_lq_neighbor4(msg_data, msg_tlen); |
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446 | } |
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447 | break; |
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448 | |
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449 | case OLSR_MID_MSG: |
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450 | { |
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451 | size_t addr_size = sizeof(struct in_addr); |
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452 | |
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453 | #if INET6 |
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454 | if (is_ipv6) |
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455 | addr_size = sizeof(struct in6_addr); |
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456 | #endif |
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457 | |
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458 | while (msg_tlen >= addr_size) { |
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459 | if (!TTEST2(*msg_data, addr_size)) |
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460 | goto trunc; |
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461 | |
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462 | printf("\n\t interface address %s", |
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463 | #if INET6 |
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464 | is_ipv6 ? ip6addr_string(msg_data) : |
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465 | #endif |
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466 | ipaddr_string(msg_data)); |
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467 | msg_data += addr_size; |
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468 | msg_tlen -= addr_size; |
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469 | } |
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470 | break; |
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471 | } |
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472 | |
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473 | case OLSR_HNA_MSG: |
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474 | printf("\n\t Advertised networks (total %u)", |
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475 | (unsigned int) (msg_tlen / sizeof(struct olsr_hna6))); |
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476 | #if INET6 |
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477 | if (is_ipv6) |
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478 | { |
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479 | int i = 0; |
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480 | while (msg_tlen >= sizeof(struct olsr_hna6)) { |
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481 | struct olsr_hna6 *hna6; |
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482 | |
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483 | if (!TTEST2(*msg_data, sizeof(struct olsr_hna6))) |
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484 | goto trunc; |
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485 | |
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486 | hna6 = (struct olsr_hna6 *)msg_data; |
---|
487 | |
---|
488 | printf("\n\t #%i: %s/%u", |
---|
489 | i, ip6addr_string(hna6->network), |
---|
490 | mask62plen (hna6->mask)); |
---|
491 | |
---|
492 | msg_data += sizeof(struct olsr_hna6); |
---|
493 | msg_tlen -= sizeof(struct olsr_hna6); |
---|
494 | } |
---|
495 | } |
---|
496 | else |
---|
497 | #endif |
---|
498 | { |
---|
499 | int col = 0; |
---|
500 | while (msg_tlen >= sizeof(struct olsr_hna4)) { |
---|
501 | if (!TTEST2(*msg_data, sizeof(struct olsr_hna4))) |
---|
502 | goto trunc; |
---|
503 | |
---|
504 | ptr.hna = (struct olsr_hna4 *)msg_data; |
---|
505 | |
---|
506 | /* print 4 prefixes per line */ |
---|
507 | if (col == 0) |
---|
508 | printf ("\n\t "); |
---|
509 | else |
---|
510 | printf (", "); |
---|
511 | |
---|
512 | printf("%s/%u", |
---|
513 | ipaddr_string(ptr.hna->network), |
---|
514 | mask2plen(EXTRACT_32BITS(ptr.hna->mask))); |
---|
515 | |
---|
516 | msg_data += sizeof(struct olsr_hna4); |
---|
517 | msg_tlen -= sizeof(struct olsr_hna4); |
---|
518 | |
---|
519 | col = (col + 1) % 4; |
---|
520 | } |
---|
521 | } |
---|
522 | break; |
---|
523 | |
---|
524 | case OLSR_NAMESERVICE_MSG: |
---|
525 | { |
---|
526 | u_int name_entries = EXTRACT_16BITS(msg_data+2); |
---|
527 | u_int addr_size = 4; |
---|
528 | int name_entries_valid = 0; |
---|
529 | u_int i; |
---|
530 | |
---|
531 | if (is_ipv6) |
---|
532 | addr_size = 16; |
---|
533 | |
---|
534 | if ((name_entries > 0) |
---|
535 | && ((name_entries * (4 + addr_size)) <= msg_tlen)) |
---|
536 | name_entries_valid = 1; |
---|
537 | |
---|
538 | if (msg_tlen < 4) |
---|
539 | goto trunc; |
---|
540 | if (!TTEST2(*msg_data, 4)) |
---|
541 | goto trunc; |
---|
542 | |
---|
543 | printf("\n\t Version %u, Entries %u%s", |
---|
544 | EXTRACT_16BITS(msg_data), |
---|
545 | name_entries, (name_entries_valid == 0) ? " (invalid)" : ""); |
---|
546 | |
---|
547 | if (name_entries_valid == 0) |
---|
548 | break; |
---|
549 | |
---|
550 | msg_data += 4; |
---|
551 | msg_tlen -= 4; |
---|
552 | |
---|
553 | for (i = 0; i < name_entries; i++) { |
---|
554 | int name_entry_len_valid = 0; |
---|
555 | |
---|
556 | if (msg_tlen < 4) |
---|
557 | break; |
---|
558 | if (!TTEST2(*msg_data, 4)) |
---|
559 | goto trunc; |
---|
560 | |
---|
561 | name_entry_type = EXTRACT_16BITS(msg_data); |
---|
562 | name_entry_len = EXTRACT_16BITS(msg_data+2); |
---|
563 | |
---|
564 | msg_data += 4; |
---|
565 | msg_tlen -= 4; |
---|
566 | |
---|
567 | if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen)) |
---|
568 | name_entry_len_valid = 1; |
---|
569 | |
---|
570 | printf("\n\t #%u: type %#06x, length %u%s", |
---|
571 | (unsigned int) i, name_entry_type, |
---|
572 | name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : ""); |
---|
573 | |
---|
574 | if (name_entry_len_valid == 0) |
---|
575 | break; |
---|
576 | |
---|
577 | /* 32-bit alignment */ |
---|
578 | name_entry_padding = 0; |
---|
579 | if (name_entry_len%4 != 0) |
---|
580 | name_entry_padding = 4-(name_entry_len%4); |
---|
581 | |
---|
582 | if (msg_tlen < addr_size + name_entry_len + name_entry_padding) |
---|
583 | goto trunc; |
---|
584 | |
---|
585 | if (!TTEST2(*msg_data, addr_size + name_entry_len + name_entry_padding)) |
---|
586 | goto trunc; |
---|
587 | |
---|
588 | #if INET6 |
---|
589 | if (is_ipv6) |
---|
590 | printf(", address %s, name \"", |
---|
591 | ip6addr_string(msg_data)); |
---|
592 | else |
---|
593 | #endif |
---|
594 | printf(", address %s, name \"", |
---|
595 | ipaddr_string(msg_data)); |
---|
596 | fn_printn(msg_data + addr_size, name_entry_len, NULL); |
---|
597 | printf("\""); |
---|
598 | |
---|
599 | msg_data += addr_size + name_entry_len + name_entry_padding; |
---|
600 | msg_tlen -= addr_size + name_entry_len + name_entry_padding; |
---|
601 | } /* for (i = 0; i < name_entries; i++) */ |
---|
602 | break; |
---|
603 | } /* case OLSR_NAMESERVICE_MSG */ |
---|
604 | |
---|
605 | /* |
---|
606 | * FIXME those are the defined messages that lack a decoder |
---|
607 | * you are welcome to contribute code ;-) |
---|
608 | */ |
---|
609 | case OLSR_POWERINFO_MSG: |
---|
610 | default: |
---|
611 | print_unknown_data(msg_data, "\n\t ", msg_tlen); |
---|
612 | break; |
---|
613 | } /* switch (msg_type) */ |
---|
614 | tptr += msg_len; |
---|
615 | } /* while (tptr < (pptr+length)) */ |
---|
616 | |
---|
617 | return; |
---|
618 | |
---|
619 | trunc: |
---|
620 | printf("[|olsr]"); |
---|
621 | } |
---|
622 | |
---|
623 | /* |
---|
624 | * Local Variables: |
---|
625 | * c-style: whitesmith |
---|
626 | * c-basic-offset: 4 |
---|
627 | * End: |
---|
628 | */ |
---|