1 | /* |
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2 | * Copyright (c) 1983, 1993 |
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3 | * The Regents of the University of California. All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * 4. Neither the name of the University nor the names of its contributors |
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14 | * may be used to endorse or promote products derived from this software |
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15 | * without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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27 | * SUCH DAMAGE. |
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28 | */ |
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29 | |
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30 | #ifndef lint |
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31 | static const char rcsid[] = |
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32 | "$FreeBSD$"; |
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33 | #endif /* not lint */ |
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34 | |
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35 | #include <rtems/bsd/sys/types.h> |
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36 | #include <sys/ioctl.h> |
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37 | #include <sys/socket.h> |
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38 | #include <net/if.h> |
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39 | |
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40 | #include <ctype.h> |
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41 | #include <err.h> |
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42 | #include <stdio.h> |
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43 | #include <stdlib.h> |
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44 | #include <string.h> |
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45 | #include <unistd.h> |
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46 | #include <ifaddrs.h> |
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47 | |
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48 | #include <netinet/in.h> |
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49 | #include <net/if_var.h> /* for struct ifaddr */ |
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50 | #include <netinet/in_var.h> |
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51 | #include <arpa/inet.h> |
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52 | #include <netdb.h> |
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53 | |
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54 | #include "ifconfig.h" |
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55 | |
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56 | static struct in_aliasreq in_addreq; |
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57 | static struct ifreq in_ridreq; |
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58 | |
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59 | static void |
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60 | in_status(int s __unused, const struct ifaddrs *ifa) |
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61 | { |
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62 | struct sockaddr_in *sin, null_sin; |
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63 | |
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64 | memset(&null_sin, 0, sizeof(null_sin)); |
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65 | |
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66 | sin = (struct sockaddr_in *)ifa->ifa_addr; |
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67 | if (sin == NULL) |
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68 | return; |
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69 | |
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70 | printf("\tinet %s ", inet_ntoa(sin->sin_addr)); |
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71 | |
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72 | if (ifa->ifa_flags & IFF_POINTOPOINT) { |
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73 | sin = (struct sockaddr_in *)ifa->ifa_dstaddr; |
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74 | if (sin == NULL) |
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75 | sin = &null_sin; |
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76 | printf("--> %s ", inet_ntoa(sin->sin_addr)); |
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77 | } |
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78 | |
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79 | sin = (struct sockaddr_in *)ifa->ifa_netmask; |
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80 | if (sin == NULL) |
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81 | sin = &null_sin; |
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82 | printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr)); |
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83 | |
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84 | if (ifa->ifa_flags & IFF_BROADCAST) { |
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85 | sin = (struct sockaddr_in *)ifa->ifa_broadaddr; |
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86 | if (sin != NULL && sin->sin_addr.s_addr != 0) |
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87 | printf("broadcast %s", inet_ntoa(sin->sin_addr)); |
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88 | } |
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89 | putchar('\n'); |
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90 | } |
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91 | |
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92 | #define SIN(x) ((struct sockaddr_in *) &(x)) |
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93 | static struct sockaddr_in *sintab[] = { |
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94 | SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr), |
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95 | SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr) |
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96 | }; |
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97 | |
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98 | static void |
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99 | in_getaddr(const char *s, int which) |
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100 | { |
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101 | #define MIN(a,b) ((a)<(b)?(a):(b)) |
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102 | struct sockaddr_in *sin = sintab[which]; |
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103 | struct hostent *hp; |
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104 | struct netent *np; |
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105 | |
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106 | sin->sin_len = sizeof(*sin); |
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107 | if (which != MASK) |
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108 | sin->sin_family = AF_INET; |
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109 | |
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110 | if (which == ADDR) { |
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111 | char *p = NULL; |
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112 | |
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113 | if((p = strrchr(s, '/')) != NULL) { |
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114 | const char *errstr; |
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115 | /* address is `name/masklen' */ |
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116 | int masklen; |
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117 | struct sockaddr_in *min = sintab[MASK]; |
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118 | *p = '\0'; |
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119 | if (!isdigit((unsigned char)*(p + 1))) |
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120 | errstr = "invalid"; |
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121 | else |
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122 | masklen = (int)strtonum(p + 1, 0, 32, &errstr); |
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123 | if (errstr != NULL) { |
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124 | *p = '/'; |
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125 | errx(1, "%s: bad value (width %s)", s, errstr); |
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126 | } |
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127 | min->sin_len = sizeof(*min); |
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128 | min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) & |
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129 | 0xffffffff); |
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130 | } |
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131 | } |
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132 | |
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133 | if (inet_aton(s, &sin->sin_addr)) |
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134 | return; |
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135 | if ((hp = gethostbyname(s)) != 0) |
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136 | bcopy(hp->h_addr, (char *)&sin->sin_addr, |
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137 | MIN((size_t)hp->h_length, sizeof(sin->sin_addr))); |
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138 | else if ((np = getnetbyname(s)) != 0) |
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139 | sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); |
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140 | else |
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141 | errx(1, "%s: bad value", s); |
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142 | #undef MIN |
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143 | } |
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144 | |
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145 | static void |
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146 | in_status_tunnel(int s) |
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147 | { |
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148 | char src[NI_MAXHOST]; |
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149 | char dst[NI_MAXHOST]; |
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150 | struct ifreq ifr; |
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151 | const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr; |
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152 | |
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153 | memset(&ifr, 0, sizeof(ifr)); |
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154 | strncpy(ifr.ifr_name, name, IFNAMSIZ); |
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155 | |
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156 | if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0) |
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157 | return; |
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158 | if (sa->sa_family != AF_INET) |
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159 | return; |
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160 | if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0) |
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161 | src[0] = '\0'; |
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162 | |
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163 | if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0) |
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164 | return; |
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165 | if (sa->sa_family != AF_INET) |
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166 | return; |
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167 | if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0) |
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168 | dst[0] = '\0'; |
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169 | |
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170 | printf("\ttunnel inet %s --> %s\n", src, dst); |
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171 | } |
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172 | |
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173 | static void |
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174 | in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres) |
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175 | { |
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176 | struct in_aliasreq addreq; |
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177 | |
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178 | memset(&addreq, 0, sizeof(addreq)); |
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179 | strncpy(addreq.ifra_name, name, IFNAMSIZ); |
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180 | memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len); |
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181 | memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len); |
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182 | |
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183 | if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0) |
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184 | warn("SIOCSIFPHYADDR"); |
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185 | } |
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186 | |
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187 | static struct afswtch af_inet = { |
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188 | .af_name = "inet", |
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189 | .af_af = AF_INET, |
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190 | .af_status = in_status, |
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191 | .af_getaddr = in_getaddr, |
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192 | .af_status_tunnel = in_status_tunnel, |
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193 | .af_settunnel = in_set_tunnel, |
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194 | .af_difaddr = SIOCDIFADDR, |
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195 | .af_aifaddr = SIOCAIFADDR, |
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196 | .af_ridreq = &in_ridreq, |
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197 | .af_addreq = &in_addreq, |
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198 | }; |
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199 | |
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200 | static __constructor void |
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201 | inet_ctor(void) |
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202 | { |
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203 | af_register(&af_inet); |
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204 | } |
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