BadVPN – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | /** |
2 | * @file |
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3 | * Common IPv4 and IPv6 code |
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4 | * |
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5 | * @defgroup ip IP |
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6 | * @ingroup callbackstyle_api |
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7 | * |
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8 | * @defgroup ip4 IPv4 |
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9 | * @ingroup ip |
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10 | * |
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11 | * @defgroup ip6 IPv6 |
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12 | * @ingroup ip |
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13 | * |
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14 | * @defgroup ipaddr IP address handling |
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15 | * @ingroup infrastructure |
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16 | * |
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17 | * @defgroup ip4addr IPv4 only |
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18 | * @ingroup ipaddr |
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19 | * |
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20 | * @defgroup ip6addr IPv6 only |
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21 | * @ingroup ipaddr |
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22 | */ |
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23 | |||
24 | /* |
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25 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
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26 | * All rights reserved. |
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27 | * |
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28 | * Redistribution and use in source and binary forms, with or without modification, |
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29 | * are permitted provided that the following conditions are met: |
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30 | * |
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31 | * 1. Redistributions of source code must retain the above copyright notice, |
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32 | * this list of conditions and the following disclaimer. |
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33 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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34 | * this list of conditions and the following disclaimer in the documentation |
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35 | * and/or other materials provided with the distribution. |
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36 | * 3. The name of the author may not be used to endorse or promote products |
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37 | * derived from this software without specific prior written permission. |
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38 | * |
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39 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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40 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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41 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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42 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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43 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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44 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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45 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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46 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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47 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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48 | * OF SUCH DAMAGE. |
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49 | * |
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50 | * This file is part of the lwIP TCP/IP stack. |
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51 | * |
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52 | * Author: Adam Dunkels <adam@sics.se> |
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53 | * |
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54 | */ |
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55 | |||
56 | #include "lwip/opt.h" |
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57 | |||
58 | #if LWIP_IPV4 || LWIP_IPV6 |
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59 | |||
60 | #include "lwip/ip_addr.h" |
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61 | #include "lwip/ip.h" |
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62 | |||
63 | /** Global data for both IPv4 and IPv6 */ |
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64 | struct ip_globals ip_data; |
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65 | |||
66 | #if LWIP_IPV4 && LWIP_IPV6 |
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67 | |||
68 | const ip_addr_t ip_addr_any_type = IPADDR_ANY_TYPE_INIT; |
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69 | |||
70 | /** |
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71 | * @ingroup ipaddr |
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72 | * Convert numeric IP address (both versions) into ASCII representation. |
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73 | * returns ptr to static buffer; not reentrant! |
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74 | * |
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75 | * @param addr ip address in network order to convert |
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76 | * @return pointer to a global static (!) buffer that holds the ASCII |
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77 | * representation of addr |
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78 | */ |
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79 | char *ipaddr_ntoa(const ip_addr_t *addr) |
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80 | { |
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81 | if (addr == NULL) { |
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82 | return NULL; |
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83 | } |
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84 | if (IP_IS_V6(addr)) { |
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85 | return ip6addr_ntoa(ip_2_ip6(addr)); |
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86 | } else { |
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87 | return ip4addr_ntoa(ip_2_ip4(addr)); |
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88 | } |
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89 | } |
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90 | |||
91 | /** |
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92 | * @ingroup ipaddr |
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93 | * Same as ipaddr_ntoa, but reentrant since a user-supplied buffer is used. |
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94 | * |
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95 | * @param addr ip address in network order to convert |
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96 | * @param buf target buffer where the string is stored |
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97 | * @param buflen length of buf |
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98 | * @return either pointer to buf which now holds the ASCII |
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99 | * representation of addr or NULL if buf was too small |
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100 | */ |
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101 | char *ipaddr_ntoa_r(const ip_addr_t *addr, char *buf, int buflen) |
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102 | { |
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103 | if (addr == NULL) { |
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104 | return NULL; |
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105 | } |
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106 | if (IP_IS_V6(addr)) { |
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107 | return ip6addr_ntoa_r(ip_2_ip6(addr), buf, buflen); |
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108 | } else { |
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109 | return ip4addr_ntoa_r(ip_2_ip4(addr), buf, buflen); |
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110 | } |
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111 | } |
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112 | |||
113 | /** |
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114 | * @ingroup ipaddr |
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115 | * Convert IP address string (both versions) to numeric. |
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116 | * The version is auto-detected from the string. |
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117 | * |
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118 | * @param cp IP address string to convert |
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119 | * @param addr conversion result is stored here |
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120 | * @return 1 on success, 0 on error |
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121 | */ |
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122 | int |
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123 | ipaddr_aton(const char *cp, ip_addr_t *addr) |
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124 | { |
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125 | if (cp != NULL) { |
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126 | const char *c; |
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127 | for (c = cp; *c != 0; c++) { |
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128 | if (*c == ':') { |
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129 | /* contains a colon: IPv6 address */ |
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130 | if (addr) { |
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131 | IP_SET_TYPE_VAL(*addr, IPADDR_TYPE_V6); |
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132 | } |
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133 | return ip6addr_aton(cp, ip_2_ip6(addr)); |
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134 | } else if (*c == '.') { |
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135 | /* contains a dot: IPv4 address */ |
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136 | break; |
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137 | } |
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138 | } |
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139 | /* call ip4addr_aton as fallback or if IPv4 was found */ |
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140 | if (addr) { |
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141 | IP_SET_TYPE_VAL(*addr, IPADDR_TYPE_V4); |
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142 | } |
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143 | return ip4addr_aton(cp, ip_2_ip4(addr)); |
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144 | } |
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145 | return 0; |
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146 | } |
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147 | |||
148 | /** |
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149 | * @ingroup lwip_nosys |
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150 | * If both IP versions are enabled, this function can dispatch packets to the correct one. |
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151 | * Don't call directly, pass to netif_add() and call netif->input(). |
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152 | */ |
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153 | err_t |
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154 | ip_input(struct pbuf *p, struct netif *inp) |
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155 | { |
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156 | if (p != NULL) { |
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157 | if (IP_HDR_GET_VERSION(p->payload) == 6) { |
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158 | return ip6_input(p, inp); |
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159 | } |
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160 | return ip4_input(p, inp); |
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161 | } |
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162 | return ERR_VAL; |
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163 | } |
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164 | |||
165 | #endif /* LWIP_IPV4 && LWIP_IPV6 */ |
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166 | |||
167 | #endif /* LWIP_IPV4 || LWIP_IPV6 */ |