1 | //socket.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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5 | * |
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6 | * This file is part of libroar a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroar is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | * |
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23 | * NOTE for everyone want's to change something and send patches: |
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24 | * read README and HACKING! There a addition information on |
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25 | * the license of this document you need to read before you send |
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26 | * any patches. |
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27 | * |
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28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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29 | * or libpulse*: |
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30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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31 | * and are therefore GPL. Because of this it may be illigal to use |
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32 | * them with any software that uses libesd, libartsc or libpulse*. |
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33 | */ |
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34 | |
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35 | #include "libroar.h" |
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36 | |
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37 | #define MODE_LISTEN ROAR_SOCKET_MODE_LISTEN |
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38 | #define MODE_CONNECT ROAR_SOCKET_MODE_CONNECT |
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39 | |
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40 | int roar_socket_new_tcp (void) { |
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41 | int fh; |
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42 | #ifndef ROAR_TARGET_WIN32 |
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43 | int opt = IPTOS_LOWDELAY; |
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44 | #endif |
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45 | #ifdef TCP_NODELAY |
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46 | int t = 1; |
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47 | #endif |
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48 | |
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49 | fh = socket(PF_INET, SOCK_STREAM, 0); |
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50 | |
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51 | #ifndef ROAR_TARGET_WIN32 |
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52 | setsockopt(fh, IPPROTO_IP, IP_TOS, &opt, sizeof(int)); |
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53 | #endif |
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54 | #ifdef TCP_NODELAY |
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55 | setsockopt(fh, IPPROTO_TCP, TCP_NODELAY, &t, sizeof(int)); |
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56 | #endif |
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57 | |
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58 | return fh; |
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59 | } |
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60 | |
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61 | int roar_socket_new_udp (void) { |
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62 | int fh; |
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63 | #ifndef ROAR_TARGET_WIN32 |
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64 | int opt = IPTOS_LOWDELAY; |
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65 | #endif |
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66 | |
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67 | fh = socket(PF_INET, SOCK_DGRAM, 0); |
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68 | |
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69 | #ifndef ROAR_TARGET_WIN32 |
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70 | setsockopt(fh, IPPROTO_IP, IP_TOS, &opt, sizeof(int)); |
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71 | #endif |
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72 | |
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73 | return fh; |
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74 | } |
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75 | |
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76 | int roar_socket_new_tcp6 (void) { |
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77 | #ifdef ROAR_HAVE_IPV6 |
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78 | int fh; |
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79 | int opt = IPTOS_LOWDELAY; |
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80 | |
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81 | fh = socket(PF_INET6, SOCK_STREAM, 0); |
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82 | |
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83 | setsockopt(fh, IPPROTO_IP, IP_TOS, &opt, sizeof(int)); |
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84 | |
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85 | return fh; |
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86 | #else |
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87 | return -1; |
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88 | #endif |
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89 | } |
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90 | |
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91 | int roar_socket_new_udp6 (void) { |
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92 | #ifdef ROAR_HAVE_IPV6 |
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93 | int fh; |
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94 | int opt = IPTOS_LOWDELAY; |
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95 | |
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96 | fh = socket(PF_INET6, SOCK_DGRAM, 0); |
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97 | |
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98 | setsockopt(fh, IPPROTO_IP, IP_TOS, &opt, sizeof(int)); |
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99 | |
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100 | return fh; |
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101 | #else |
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102 | return -1; |
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103 | #endif |
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104 | } |
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105 | |
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106 | int roar_socket_new_unix (void) { |
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107 | int fh; |
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108 | /* |
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109 | #ifdef SO_PEERCRED |
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110 | int opt = 1; |
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111 | #endif |
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112 | */ |
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113 | |
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114 | fh = socket(AF_UNIX, SOCK_STREAM, 0); |
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115 | |
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116 | /* |
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117 | #ifdef SO_PEERCRED |
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118 | // setsockopt(fh, SOL_SOCKET, SO_PASSCRED, &opt, sizeof(int)); |
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119 | #endif |
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120 | */ |
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121 | |
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122 | return fh; |
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123 | } |
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124 | |
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125 | int roar_socket_decnet_set_timeout (int fh, time_t sec, int usec) { |
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126 | #ifdef ROAR_HAVE_LIBDNET |
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127 | struct timeval timeout = {sec, usec}; |
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128 | |
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129 | return setsockopt(fh, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout)); |
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130 | #else |
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131 | return -1; |
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132 | #endif |
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133 | } |
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134 | |
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135 | int roar_socket_recvbuf(int fh, int len) { |
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136 | if ( len < 256 ) len = 256; |
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137 | |
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138 | return setsockopt(fh, SOL_SOCKET, SO_RCVBUF, &len, sizeof(len)); |
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139 | } |
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140 | |
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141 | int roar_socket_new_decnet_seqpacket (void) { |
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142 | #ifdef ROAR_HAVE_LIBDNET |
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143 | int fh; |
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144 | |
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145 | fh = socket(AF_DECnet, SOCK_SEQPACKET, DNPROTO_NSP); |
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146 | |
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147 | roar_socket_decnet_set_timeout(fh, 300, 0); |
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148 | |
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149 | return fh; |
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150 | #else |
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151 | return -1; |
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152 | #endif |
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153 | } |
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154 | |
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155 | |
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156 | int roar_socket_new_decnet_stream (void) { |
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157 | #ifdef ROAR_HAVE_LIBDNET |
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158 | int fh; |
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159 | |
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160 | fh = socket(AF_DECnet, SOCK_STREAM, DNPROTO_NSP); |
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161 | |
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162 | roar_socket_decnet_set_timeout(fh, 300, 0); |
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163 | |
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164 | return fh; |
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165 | #else |
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166 | return -1; |
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167 | #endif |
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168 | } |
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169 | |
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170 | int roar_socket_new_ipxspx (void) { |
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171 | return -1; |
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172 | } |
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173 | |
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174 | int roar_socket_new_ipx (void) { |
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175 | #ifdef ROAR_HAVE_IPX |
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176 | return socket(AF_IPX, SOCK_DGRAM, AF_IPX); |
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177 | #else |
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178 | return -1; |
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179 | #endif |
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180 | } |
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181 | |
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182 | |
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183 | int roar_socket_nonblock(int fh, int state) { |
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184 | #ifndef ROAR_TARGET_WIN32 |
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185 | int flags; |
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186 | |
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187 | if ( (flags = fcntl(fh, F_GETFL, 0)) == -1 ) { |
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188 | ROAR_ERR("roar_socket_nonblock(fh=%i, state=%i): Can not read flags: %s", fh, state, strerror(errno)); |
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189 | ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = -1", fh, state); |
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190 | return -1; |
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191 | } |
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192 | |
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193 | if ( !(flags & O_NONBLOCK) && state == ROAR_SOCKET_BLOCK ) |
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194 | return 0; |
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195 | |
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196 | flags |= O_NONBLOCK; |
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197 | |
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198 | if ( state == ROAR_SOCKET_BLOCK ) |
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199 | flags -= O_NONBLOCK; |
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200 | |
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201 | if ( fcntl(fh, F_SETFL, flags) == -1 ) { |
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202 | ROAR_ERR("roar_socket_nonblock(fh=%i, state=%i): Can not set flags: %s", fh, state, strerror(errno)); |
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203 | ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = -1", fh, state); |
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204 | return -1; |
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205 | } |
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206 | |
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207 | ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = 0", fh, state); |
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208 | return 0; |
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209 | #else |
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210 | ROAR_WARN("roar_socket_nonblock(*): no nonblocking IO support on win32, use a real OS"); |
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211 | return -1; |
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212 | #endif |
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213 | } |
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214 | |
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215 | int roar_socket_dup_udp_local_end (int fh) { |
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216 | #ifndef ROAR_TARGET_WIN32 |
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217 | int n = -1; |
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218 | int flags = -1; |
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219 | struct sockaddr_in socket_addr; |
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220 | socklen_t len = sizeof(struct sockaddr_in); |
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221 | |
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222 | if ( (flags = fcntl(fh, F_GETFL, 0)) == -1 ) { |
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223 | ROAR_WARN("roar_socket_dup_udp_local_end(fh=%i): Can not read flags: %s", fh, strerror(errno)); |
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224 | } |
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225 | |
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226 | if ( getsockname(fh, (struct sockaddr *)&socket_addr, &len) == -1 ) { |
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227 | return -1; |
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228 | } |
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229 | |
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230 | if ( socket_addr.sin_family != AF_INET ) { |
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231 | return -1; |
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232 | } |
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233 | |
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234 | n = roar_socket_new_udp(); |
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235 | |
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236 | if ( n == -1 ) |
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237 | return -1; |
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238 | |
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239 | // if ( mode_func(fh, (struct sockaddr *)&socket_addr, sizeof(struct sockaddr_in)) == -1 ) { |
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240 | if ( bind(n, (struct sockaddr *)&socket_addr, len) == -1 ) { |
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241 | close(n); |
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242 | return -1; |
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243 | } |
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244 | |
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245 | if ( flags != -1 ) { |
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246 | if ( fcntl(fh, F_SETFL, flags) == -1 ) { |
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247 | ROAR_WARN("roar_socket_dup_udp_local_end(fh=%i): Can not set flags: %s", fh, strerror(errno)); |
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248 | return -1; |
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249 | } |
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250 | } |
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251 | |
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252 | |
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253 | return n; |
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254 | #else |
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255 | ROAR_WARN("roar_socket_dup_udp_local_end(*): this function is not supported on win32, use a real OS"); |
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256 | return -1; |
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257 | #endif |
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258 | } |
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259 | |
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260 | |
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261 | #define _SCMR_CONTROLLEN (sizeof(struct cmsghdr) + sizeof(int)) |
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262 | int roar_socket_send_fh (int sock, int fh, char * mes, size_t len) { |
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263 | #ifndef ROAR_TARGET_WIN32 |
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264 | struct iovec iov[1]; |
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265 | struct msghdr msg; |
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266 | char cmptr_buf[_SCMR_CONTROLLEN]; |
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267 | struct cmsghdr * cmptr = (struct cmsghdr *) cmptr_buf; |
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268 | char localmes[1] = {0}; |
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269 | |
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270 | ROAR_DBG("roar_socket_send_fh(sock=%i, fh=%i, mes=%p, len=%u) = ?", sock, fh, mes, len); |
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271 | |
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272 | if ( sock < 0 || fh < 0 ) |
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273 | return -1; |
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274 | |
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275 | if ( len == 0 ) { |
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276 | len = 1; |
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277 | mes = localmes; |
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278 | } |
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279 | |
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280 | memset(cmptr, 0, _SCMR_CONTROLLEN); |
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281 | |
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282 | iov[0].iov_base = mes; |
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283 | iov[0].iov_len = len; |
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284 | msg.msg_iov = iov; |
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285 | msg.msg_iovlen = 1; |
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286 | msg.msg_name = NULL; |
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287 | msg.msg_namelen = 0; |
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288 | |
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289 | cmptr->cmsg_level = SOL_SOCKET; |
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290 | cmptr->cmsg_type = SCM_RIGHTS; |
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291 | cmptr->cmsg_len = _SCMR_CONTROLLEN; |
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292 | msg.msg_control = (caddr_t) cmptr; |
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293 | msg.msg_controllen = _SCMR_CONTROLLEN; |
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294 | *(int *)CMSG_DATA(cmptr) = fh; |
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295 | |
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296 | return sendmsg(sock, &msg, 0); |
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297 | #else |
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298 | ROAR_ERR("roar_socket_send_fh(*): There is no UNIX Domain Socket support in win32, download a real OS."); |
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299 | return -1; |
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300 | #endif |
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301 | } |
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302 | |
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303 | int roar_socket_recv_fh (int sock, char * mes, size_t * len) { |
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304 | #ifndef ROAR_TARGET_WIN32 |
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305 | struct iovec iov[1]; |
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306 | struct msghdr msg; |
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307 | char cmptr_buf[_SCMR_CONTROLLEN]; |
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308 | struct cmsghdr * cmptr = (struct cmsghdr *) cmptr_buf; |
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309 | char localmes[1]; |
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310 | size_t locallen[1] = {1}; |
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311 | |
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312 | if ( sock < 0 ) |
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313 | return -1; |
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314 | |
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315 | if ( len == NULL ) { |
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316 | len = locallen; |
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317 | mes = localmes; |
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318 | } |
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319 | |
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320 | iov[0].iov_base = mes; |
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321 | iov[0].iov_len = *len; |
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322 | msg.msg_iov = iov; |
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323 | msg.msg_iovlen = 1; |
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324 | msg.msg_name = NULL; |
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325 | msg.msg_namelen = 0; |
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326 | |
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327 | msg.msg_control = (caddr_t) cmptr; |
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328 | msg.msg_controllen = _SCMR_CONTROLLEN; |
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329 | |
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330 | if ( (*len = recvmsg(sock, &msg, 0)) == -1 ) |
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331 | return -1; |
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332 | |
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333 | if ( msg.msg_controllen != _SCMR_CONTROLLEN ) |
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334 | return -1; |
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335 | |
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336 | return *(int *)CMSG_DATA(cmptr); |
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337 | #else |
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338 | ROAR_ERR("roar_socket_recv_fh(*): There is no UNIX Domain Socket support in win32, download a real OS."); |
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339 | return -1; |
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340 | #endif |
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341 | } |
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342 | |
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343 | int roar_socket_listen (int type, char * host, int port) { |
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344 | return roar_socket_open(MODE_LISTEN, type, host, port); |
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345 | } |
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346 | |
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347 | int roar_socket_connect (char * host, int port) { |
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348 | char * proxy_type = getenv("ROAR_PROXY"); |
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349 | |
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350 | if ( proxy_type == NULL || strcmp(proxy_type, "") == 0 ) { |
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351 | return roar_socket_open(MODE_CONNECT, ROAR_SOCKET_TYPE_UNKNOWN, host, port); |
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352 | } else { |
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353 | #ifdef ROAR_SUPPORT_PROXY |
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354 | return roar_socket_open_proxy(MODE_CONNECT, ROAR_SOCKET_TYPE_UNKNOWN, host, port, proxy_type); |
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355 | #else |
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356 | ROAR_ERR("roar_socket_connect(host='%s', port=%i): no support for proxy code (proxy_type=%s)", host, port, proxy_type); |
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357 | return -1; |
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358 | #endif |
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359 | } |
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360 | } |
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361 | |
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362 | |
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363 | int roar_socket_listen_decnet (char * object, int num) { |
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364 | #ifdef ROAR_HAVE_LIBDNET |
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365 | int fh = roar_socket_new_decnet_stream(); |
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366 | struct sockaddr_dn bind_sockaddr; |
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367 | |
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368 | if ( fh == -1 ) |
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369 | return -1; |
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370 | |
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371 | if ( !*object ) |
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372 | object = NULL; |
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373 | |
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374 | if ( (object && num) || (!*object && !num) ) { |
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375 | ROAR_WARN("roar_socket_listen_decnet(object='%s', num=%i): illegal address!", object, num); |
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376 | close(fh); |
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377 | return -1; |
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378 | } |
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379 | |
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380 | memset((void*)&bind_sockaddr, 0, sizeof(struct sockaddr_dn)); |
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381 | |
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382 | bind_sockaddr.sdn_family = AF_DECnet; |
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383 | bind_sockaddr.sdn_flags = 0; |
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384 | bind_sockaddr.sdn_objnum = num; |
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385 | |
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386 | if ( num ) { |
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387 | bind_sockaddr.sdn_objnamel = 0; |
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388 | } else { |
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389 | bind_sockaddr.sdn_objnamel = ROAR_dn_htons(strlen(object)); |
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390 | if ( bind_sockaddr.sdn_objnamel > DN_MAXOBJL ) |
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391 | bind_sockaddr.sdn_objnamel = DN_MAXOBJL; |
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392 | strncpy((char*)bind_sockaddr.sdn_objname, object, DN_MAXOBJL); |
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393 | } |
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394 | |
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395 | if ( bind(fh, (struct sockaddr *) &bind_sockaddr, sizeof(bind_sockaddr)) == -1 ) { |
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396 | close(fh); |
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397 | return -1; |
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398 | } |
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399 | |
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400 | if ( listen(fh, 8) == -1 ) { |
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401 | close(fh); |
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402 | return -1; |
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403 | } |
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404 | |
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405 | return fh; |
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406 | #else |
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407 | return -1; |
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408 | #endif |
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409 | } |
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410 | |
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411 | char * roar_socket_get_local_nodename(void) { |
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412 | #ifdef ROAR_HAVE_LIBDNET |
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413 | static char node[16] = {0}; |
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414 | struct dn_naddr *binaddr; |
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415 | struct nodeent *dp; |
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416 | |
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417 | if ( !node[0] ) { |
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418 | if ( (binaddr=getnodeadd()) == NULL) |
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419 | return NULL; |
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420 | |
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421 | if ( (dp=getnodebyaddr((char*)binaddr->a_addr, binaddr->a_len, PF_DECnet)) == NULL ) |
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422 | return NULL; |
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423 | |
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424 | strncpy(node, dp->n_name, 15); |
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425 | node[15] = 0; |
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426 | } |
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427 | |
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428 | return node; |
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429 | #else |
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430 | return NULL; |
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431 | #endif |
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432 | } |
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433 | |
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434 | int roar_socket_open (int mode, int type, char * host, int port) { |
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435 | // int type = ROAR_SOCKET_TYPE_INET; |
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436 | int fh; |
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437 | #ifdef ROAR_HAVE_IPX |
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438 | #define _NEED_OBJ |
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439 | int i; |
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440 | int ret; |
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441 | #endif |
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442 | union { |
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443 | struct sockaddr_in in; |
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444 | #ifdef ROAR_HAVE_UNIX |
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445 | struct sockaddr_un un; |
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446 | #endif |
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447 | #ifdef ROAR_HAVE_IPV6 |
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448 | struct sockaddr_in6 in6; |
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449 | #endif |
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450 | #ifdef ROAR_HAVE_IPX |
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451 | struct sockaddr_ipx ipx; |
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452 | #endif |
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453 | } socket_addr; |
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454 | struct hostent * he; |
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455 | //unsigned int host_div = 0; |
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456 | int (*mode_func)(int sockfd, const struct sockaddr *serv_addr, socklen_t addrlen) = connect; // default is to connect |
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457 | #ifdef ROAR_HAVE_LIBDNET |
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458 | #define _NEED_OBJ |
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459 | #endif |
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460 | #ifdef _NEED_OBJ |
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461 | char obj[80]; |
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462 | char * del; |
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463 | #endif |
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464 | |
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465 | if ( mode == MODE_LISTEN ) |
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466 | mode_func = bind; |
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467 | |
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468 | if ( type == ROAR_SOCKET_TYPE_UNKNOWN ) { |
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469 | type = ROAR_SOCKET_TYPE_INET; |
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470 | if ( *host == '/' ) { |
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471 | type = ROAR_SOCKET_TYPE_UNIX; |
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472 | } else if ( strcmp(host, "+fork") == 0 ) { |
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473 | type = ROAR_SOCKET_TYPE_FORK; |
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474 | } else if ( strstr(host, "::") != NULL ) { |
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475 | type = ROAR_SOCKET_TYPE_DECNET; |
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476 | } else if ( host[strlen(host)-1] == ')' ) { |
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477 | type = ROAR_SOCKET_TYPE_IPX; |
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478 | } |
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479 | } |
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480 | |
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481 | |
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482 | ROAR_DBG("roar_socket_open(*): type=%s, host='%s', port=%i", |
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483 | type == ROAR_SOCKET_TYPE_UNIX ? "UNIX" : "INET", host, port); |
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484 | |
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485 | if ( type == ROAR_SOCKET_TYPE_DECNET ) { |
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486 | #ifdef ROAR_HAVE_LIBDNET |
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487 | ROAR_DBG("roar_socket_open(*): hostname for DECnet: host(%p)=%s", host, host); |
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488 | del = strstr(host, "::"); |
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489 | ROAR_DBG("roar_socket_open(*): hostname for DECnet: del(%p)=%s", del, del); |
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490 | |
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491 | if ( del == NULL ) { |
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492 | ROAR_WARN("roar_socket_open(*): invalid hostname for DECnet: %s", host); |
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493 | return -1; |
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494 | } |
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495 | |
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496 | *del = 0; |
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497 | |
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498 | if ( *(del+2) == '#' ) { // assume we have node::#num |
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499 | port = atoi(del+2); |
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500 | } |
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501 | |
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502 | if ( port ) { |
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503 | snprintf(obj, 7, "%i", port); // no need for snprintf() as dec(port) is smaller than obj[] |
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504 | } else { |
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505 | *obj = 0; |
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506 | strncat(obj, del+2, 79); |
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507 | } |
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508 | |
---|
509 | if ( mode == MODE_LISTEN ) { |
---|
510 | fh = roar_socket_listen_decnet(obj, port); |
---|
511 | *del = ':'; |
---|
512 | return fh; |
---|
513 | // return -1; // listen sockets on DECnet are not supportet at the moment |
---|
514 | } else { |
---|
515 | // There is nothing wrong in this case to use dnet_conn() so we do. |
---|
516 | fh = dnet_conn(host, obj, SOCK_STREAM, 0 ,0 ,0 , 0); |
---|
517 | *del = ':'; |
---|
518 | return fh; |
---|
519 | } |
---|
520 | #else |
---|
521 | return -1; // no decnet support |
---|
522 | #endif |
---|
523 | } |
---|
524 | |
---|
525 | memset(&socket_addr, 0, sizeof(socket_addr)); |
---|
526 | memset(&he, 0, sizeof(he)); // FIXME: we have a valid pointer in here???? |
---|
527 | |
---|
528 | |
---|
529 | if ( type == ROAR_SOCKET_TYPE_INET || type == ROAR_SOCKET_TYPE_INET6 ) { |
---|
530 | |
---|
531 | if ( (he = gethostbyname(host)) == NULL ) { |
---|
532 | ROAR_ERR("roar_socket_open(*): Can\'t resolve host name '%s'", |
---|
533 | host); |
---|
534 | return -1; |
---|
535 | } |
---|
536 | |
---|
537 | memcpy((struct in_addr *)&socket_addr.in.sin_addr, he->h_addr, sizeof(struct in_addr)); |
---|
538 | |
---|
539 | /* set the connect information */ |
---|
540 | socket_addr.in.sin_family = AF_INET; |
---|
541 | socket_addr.in.sin_port = ROAR_HOST2NET16(port); |
---|
542 | |
---|
543 | fh = roar_socket_new_tcp(); |
---|
544 | |
---|
545 | if ( mode_func(fh, (struct sockaddr *)&socket_addr.in, sizeof(struct sockaddr_in)) == -1 ) { |
---|
546 | ROAR_DBG("roar_socket_open(*): Can not connect/bind: %s", strerror(errno)); |
---|
547 | close(fh); |
---|
548 | return -1; |
---|
549 | } |
---|
550 | // hey! we have a socket... |
---|
551 | } else if ( type == ROAR_SOCKET_TYPE_UNIX ) { |
---|
552 | #ifdef ROAR_HAVE_UNIX |
---|
553 | socket_addr.un.sun_family = AF_UNIX; |
---|
554 | strncpy(socket_addr.un.sun_path, host, sizeof(socket_addr.un.sun_path) - 1); |
---|
555 | |
---|
556 | fh = roar_socket_new_unix(); |
---|
557 | |
---|
558 | if ( mode_func(fh, (struct sockaddr *)&socket_addr.un, sizeof(struct sockaddr_un)) == -1 ) { |
---|
559 | ROAR_DBG("roar_socket_open(*): Can not connect/bind: %s", strerror(errno)); |
---|
560 | close(fh); |
---|
561 | return -1; |
---|
562 | } |
---|
563 | #else |
---|
564 | ROAR_ERR("roar_socket_open(*): There is no UNIX Domain Socket support in win32, download a real OS."); |
---|
565 | return -1; |
---|
566 | #endif |
---|
567 | } else if ( type == ROAR_SOCKET_TYPE_IPX ) { |
---|
568 | #ifdef ROAR_HAVE_IPX |
---|
569 | socket_addr.ipx.sipx_family = AF_IPX; |
---|
570 | |
---|
571 | obj[0] = 0; |
---|
572 | |
---|
573 | if ( (ret = sscanf(host, "%8x.%12s(%x)", &socket_addr.ipx.sipx_network, obj, |
---|
574 | (unsigned int *)&socket_addr.ipx.sipx_port)) < 2 ) { |
---|
575 | return -1; |
---|
576 | } else if ( ret == 2 ) { |
---|
577 | socket_addr.ipx.sipx_port = port; // Network Byte Order? |
---|
578 | } |
---|
579 | |
---|
580 | memset(socket_addr.ipx.sipx_node, 0, IPX_NODE_LEN); |
---|
581 | ret = strlen(obj); |
---|
582 | |
---|
583 | if ( ret % 2 ) // needs to be even at the moment |
---|
584 | return -1; |
---|
585 | |
---|
586 | fh = roar_socket_new_ipx(); |
---|
587 | |
---|
588 | close(fh); |
---|
589 | return -1; |
---|
590 | #else |
---|
591 | return -1; |
---|
592 | #endif |
---|
593 | } else if ( type == ROAR_SOCKET_TYPE_FORK ) { |
---|
594 | return roar_socket_open_fork(mode, host, port); |
---|
595 | } else if ( type == ROAR_SOCKET_TYPE_FILE ) { |
---|
596 | return roar_socket_open_file(mode, host, port); |
---|
597 | } else { |
---|
598 | return -1; |
---|
599 | } |
---|
600 | |
---|
601 | if ( mode == MODE_LISTEN ) |
---|
602 | if ( listen(fh, ROAR_SOCKET_QUEUE_LEN) == -1 ) { |
---|
603 | close(fh); |
---|
604 | return -1; |
---|
605 | } |
---|
606 | |
---|
607 | return fh; |
---|
608 | } |
---|
609 | |
---|
610 | int roar_socket_open_fork (int mode, char * host, int port) { |
---|
611 | #ifndef ROAR_TARGET_WIN32 |
---|
612 | int socks[2]; |
---|
613 | int r; |
---|
614 | char fhstr[8]; |
---|
615 | |
---|
616 | if ( mode == MODE_LISTEN ) |
---|
617 | return -1; |
---|
618 | |
---|
619 | if ( socketpair(AF_UNIX, SOCK_STREAM, 0, socks) == -1 ) { |
---|
620 | return -1; |
---|
621 | } |
---|
622 | |
---|
623 | r = fork(); |
---|
624 | |
---|
625 | if ( r == -1 ) { // error! |
---|
626 | ROAR_ERR("roar_socket_open_fork(*): Can not fork: %s", strerror(errno)); |
---|
627 | close(socks[0]); |
---|
628 | close(socks[1]); |
---|
629 | return -1; |
---|
630 | } else if ( r == 0 ) { // we are the child |
---|
631 | close(socks[0]); |
---|
632 | |
---|
633 | close(ROAR_STDIN ); // we do not want roard to have any standard input |
---|
634 | close(ROAR_STDOUT); // STDOUT is also not needed, so we close it, |
---|
635 | // but STDERR we keep open for error messages. |
---|
636 | |
---|
637 | snprintf(fhstr, 7, "%i", socks[1]); |
---|
638 | |
---|
639 | execlp("roard", "roard", "--no-listen", "--client-fh", fhstr, NULL); |
---|
640 | |
---|
641 | // we are still alive? |
---|
642 | ROAR_ERR("roar_socket_open_fork(*): alive after exec(), that's bad!"); |
---|
643 | _exit(1); |
---|
644 | } else { // we are the parent |
---|
645 | close(socks[1]); |
---|
646 | return socks[0]; |
---|
647 | } |
---|
648 | |
---|
649 | return -1; |
---|
650 | #else |
---|
651 | ROAR_ERR("roar_socket_open_fork(*): There is no UNIX Domain Socket support in win32, download a real OS."); |
---|
652 | return -1; |
---|
653 | #endif |
---|
654 | } |
---|
655 | |
---|
656 | int roar_socket_open_file (int mode, char * host, int port) { |
---|
657 | int fh; |
---|
658 | |
---|
659 | if ( mode == MODE_LISTEN ) |
---|
660 | return -1; |
---|
661 | |
---|
662 | if ( (fh = open(host, O_RDONLY, 0644)) == -1 ) { |
---|
663 | ROAR_ERR("roar_socket_open_file(*): Can not open file %s: %s", host, strerror(errno)); |
---|
664 | } |
---|
665 | |
---|
666 | return fh; |
---|
667 | } |
---|
668 | |
---|
669 | // --- [ PROXY CODE ] --- |
---|
670 | |
---|
671 | // generic proxy code: |
---|
672 | |
---|
673 | #ifdef ROAR_SUPPORT_PROXY |
---|
674 | int roar_socket_open_proxy (int mode, int type, char * host, int port, char * proxy_type) { |
---|
675 | int proxy_port = -1; |
---|
676 | char proxy_host[ROAR_SOCKET_MAX_HOSTNAMELEN]; |
---|
677 | char * proxy_addr = NULL; |
---|
678 | int i; |
---|
679 | int fh = -1; |
---|
680 | char * user = NULL, * pw = NULL, * opts = NULL; |
---|
681 | char * sep; |
---|
682 | int no_fh = 0; |
---|
683 | char proxy_addr_buf[1024]; |
---|
684 | static struct passwd * passwd; |
---|
685 | int (* code)(int mode, int fh, char * host, int port, char * user, char * pw, char * opts) = NULL; |
---|
686 | |
---|
687 | if ( passwd == NULL ) { |
---|
688 | passwd = getpwuid(getuid()); |
---|
689 | } |
---|
690 | |
---|
691 | if ( passwd != NULL ) |
---|
692 | user = passwd->pw_name; |
---|
693 | |
---|
694 | if ( user == NULL ) |
---|
695 | user = getenv("USER"); |
---|
696 | |
---|
697 | // TODO: change this so we support listen() proxys (ssh -R) |
---|
698 | if ( mode != MODE_CONNECT ) |
---|
699 | return -1; |
---|
700 | |
---|
701 | if ( !strncmp(proxy_type, "socks", 5) ) { |
---|
702 | proxy_addr = getenv("socks_proxy"); |
---|
703 | |
---|
704 | proxy_port = 9050; // TOR's default port |
---|
705 | } else if ( !strcmp(proxy_type, "http") || !strcmp(proxy_type, "https") ) { |
---|
706 | proxy_port = 8080; |
---|
707 | |
---|
708 | if ( (proxy_addr = getenv("http_proxy")) == NULL ) |
---|
709 | proxy_addr = getenv("https_proxy"); |
---|
710 | |
---|
711 | if ( proxy_addr == NULL ) |
---|
712 | return -1; |
---|
713 | |
---|
714 | if ( !strncmp(proxy_addr, "http://", 7) ) |
---|
715 | proxy_addr += 7; |
---|
716 | } else if ( !strncmp(proxy_type, "ssh", 3) ) { |
---|
717 | proxy_port = 22; |
---|
718 | proxy_addr = getenv("ssh_proxy"); |
---|
719 | no_fh = 1; |
---|
720 | } |
---|
721 | |
---|
722 | proxy_addr_buf[1023] = 0; |
---|
723 | strncpy(proxy_addr_buf, proxy_addr, 1023); |
---|
724 | proxy_addr = proxy_addr_buf; |
---|
725 | |
---|
726 | if ( (sep = strstr(proxy_type, "/")) != NULL ) |
---|
727 | opts = sep+1; |
---|
728 | |
---|
729 | if ( proxy_addr == NULL ) |
---|
730 | return -1; |
---|
731 | |
---|
732 | if ( (sep = strstr(proxy_addr, "@")) != NULL ) { |
---|
733 | *sep = 0; |
---|
734 | user = proxy_addr; |
---|
735 | proxy_addr = sep+1; |
---|
736 | |
---|
737 | if ( (sep = strstr(user, ":")) != NULL ) { |
---|
738 | *sep = 0; |
---|
739 | pw = sep+1; |
---|
740 | } |
---|
741 | } |
---|
742 | |
---|
743 | ROAR_DBG("roar_socket_open_proxy(*): proxy_type='%s', opts='%s', user='%s', pw=(not shown), proxy_addr='%s'", proxy_type, opts, user, proxy_addr); |
---|
744 | |
---|
745 | for (i = 0; proxy_addr[i] != 0 && proxy_addr[i] != ':' && i < ROAR_SOCKET_MAX_HOSTNAMELEN; i++) |
---|
746 | proxy_host[i] = proxy_addr[i]; |
---|
747 | proxy_host[i] = 0; |
---|
748 | |
---|
749 | if ( i == 0 ) // no hostname found |
---|
750 | return -1; |
---|
751 | |
---|
752 | if ( proxy_addr[i] == ':' ) |
---|
753 | proxy_port = atoi(&proxy_addr[i+1]); |
---|
754 | |
---|
755 | if ( ! no_fh ) { |
---|
756 | if ( (fh = roar_socket_open(mode, type, proxy_host, proxy_port)) == -1) { |
---|
757 | return -1; |
---|
758 | } |
---|
759 | } |
---|
760 | |
---|
761 | if ( !strcmp(proxy_type, "socks4a") ) { // for TOR, the only supported type at the moment |
---|
762 | code = roar_socket_open_socks4a; |
---|
763 | } else if ( !strcmp(proxy_type, "socks4d") ) { // DECnet |
---|
764 | code = roar_socket_open_socks4d; |
---|
765 | } else if ( !strcmp(proxy_type, "socks4") ) { // good old SOCKS4 |
---|
766 | code = roar_socket_open_socks4; |
---|
767 | } else if ( !strcmp(proxy_type, "http") ) { // HTTP CONNECT |
---|
768 | code = roar_socket_open_http; |
---|
769 | } else if ( !strncmp(proxy_type, "ssh", 3) ) { // SSH... |
---|
770 | #ifdef ROAR_HAVE_BIN_SSH |
---|
771 | code = roar_socket_open_ssh; |
---|
772 | #else |
---|
773 | ROAR_ERR("roar_socket_open_proxy(*): No SSH support compiled in"); |
---|
774 | #endif |
---|
775 | } else { |
---|
776 | return -1; // unknown type |
---|
777 | } |
---|
778 | |
---|
779 | if ( code != NULL ) { |
---|
780 | if ( no_fh ) { |
---|
781 | fh = code(mode, fh, host, port, user, pw, opts); |
---|
782 | } else { |
---|
783 | if ( code(mode, fh, host, port, user, pw, opts) == -1 ) { |
---|
784 | close(fh); |
---|
785 | return -1; |
---|
786 | } |
---|
787 | } |
---|
788 | |
---|
789 | return fh; |
---|
790 | } |
---|
791 | |
---|
792 | close(fh); |
---|
793 | return -1; |
---|
794 | } |
---|
795 | |
---|
796 | // protocoll dependet proxy code: |
---|
797 | |
---|
798 | int roar_socket_open_socks4 (int mode, int fh, char * host, int port, char * user, char * pw, char * opts) { |
---|
799 | struct hostent * he; |
---|
800 | |
---|
801 | if ( (he = gethostbyname(host)) == NULL ) { |
---|
802 | ROAR_ERR("roar_socket_open_socks4(*): Can\'t resolve host name '%s'", host); |
---|
803 | return -1; |
---|
804 | } |
---|
805 | |
---|
806 | return roar_socket_open_socks4x(mode, fh, he->h_addr, port, NULL, 0, user); |
---|
807 | } |
---|
808 | |
---|
809 | int roar_socket_open_socks4a(int mode, int fh, char * host, int port, char * user, char * pw, char * opts) { |
---|
810 | return roar_socket_open_socks4x(mode, fh, "\0\0\0\1", port, host, strlen(host)+1, user); |
---|
811 | } |
---|
812 | |
---|
813 | int roar_socket_open_socks4d(int mode, int fh, char * host, int port, char * user, char * pw, char * opts) { |
---|
814 | size_t len = strlen(host)+1; |
---|
815 | char * dp; |
---|
816 | |
---|
817 | if ( port == 0 ) { |
---|
818 | if ( (dp = strstr(host, "::")) == NULL ) |
---|
819 | return -1; |
---|
820 | |
---|
821 | len--; |
---|
822 | *dp = 0; |
---|
823 | memmove(dp+1, dp+2, len - (dp-host) - 1); |
---|
824 | } |
---|
825 | |
---|
826 | return roar_socket_open_socks4x(mode, fh, "\0\2\0\0", port, host, len, user); |
---|
827 | } |
---|
828 | |
---|
829 | int roar_socket_open_socks4x(int mode, int fh, char host[4], int port, char * app, size_t app_len, char * user) { |
---|
830 | char buf[9]; |
---|
831 | int len; |
---|
832 | |
---|
833 | buf[0] = 0x04; |
---|
834 | buf[1] = mode == MODE_CONNECT ? 0x01 : 0x02; |
---|
835 | *((uint16_t*)&buf[2]) = htons(port); |
---|
836 | memcpy(buf+4, host, 4); |
---|
837 | |
---|
838 | if ( user == NULL ) { |
---|
839 | buf[8] = 0x00; |
---|
840 | len = 9; |
---|
841 | } else { |
---|
842 | len = 8; |
---|
843 | } |
---|
844 | |
---|
845 | if ( write(fh, buf, len) != len ) |
---|
846 | return -1; |
---|
847 | |
---|
848 | if ( user != NULL ) { |
---|
849 | len = strlen(user) + 1; |
---|
850 | if ( write(fh, user, len) != len ) |
---|
851 | return -1; |
---|
852 | } |
---|
853 | |
---|
854 | if ( app_len > 0 ) |
---|
855 | if ( write(fh, app, app_len) != app_len ) |
---|
856 | return -1; |
---|
857 | |
---|
858 | if ( read(fh, buf, 8) != 8 ) |
---|
859 | return -1; |
---|
860 | |
---|
861 | if ( buf[1] != 0x5a ) |
---|
862 | return -1; |
---|
863 | |
---|
864 | return 0; |
---|
865 | } |
---|
866 | |
---|
867 | int roar_socket_open_http (int mode, int fh, char * host, int port, char * user, char * pw, char * opts) { |
---|
868 | char buf[1024]; |
---|
869 | int len; |
---|
870 | |
---|
871 | if ( port == 0 || host == NULL ) |
---|
872 | return -1; |
---|
873 | |
---|
874 | if ( *host == '/' ) // AF_UNIX |
---|
875 | return -1; |
---|
876 | |
---|
877 | if ( (len = snprintf(buf, 1024, "CONNECT %s:%i HTTP/1.0\r\nUser-Agent: libroar\r\n\r\n", host, port)) == -1 ) |
---|
878 | return -1; |
---|
879 | |
---|
880 | if ( write(fh, buf, len) != len ) |
---|
881 | return -1; |
---|
882 | |
---|
883 | while ( (len = read(fh, buf, 1024)) ) { |
---|
884 | if ( len == 1024 ) { // overlong lion |
---|
885 | return -1; |
---|
886 | } else if ( len == 2 && buf[0] == '\r' && buf[1] == '\n' ) { |
---|
887 | break; |
---|
888 | } else if ( len == 1 && (buf[0] == '\r' || buf[0] == '\n') ) { // bad proxy or devel trying to debug ;) |
---|
889 | break; |
---|
890 | } else if ( len >= 4 && buf[len-4] == '\r' && buf[len-3] == '\n' && buf[len-2] == '\r' && buf[len-1] == '\n' ) { |
---|
891 | break; |
---|
892 | } |
---|
893 | } |
---|
894 | |
---|
895 | return 0; |
---|
896 | } |
---|
897 | |
---|
898 | |
---|
899 | #ifdef ROAR_HAVE_BIN_SSH |
---|
900 | int roar_socket_open_ssh (int mode, int fh, char * host, int port, char * user, char * pw, char * opts) { |
---|
901 | char * proxy_addr = getenv("ssh_proxy"); |
---|
902 | char * sep; |
---|
903 | char cmd[1024] = {0}, rcmd[1024] = {0}; |
---|
904 | int proxy_port = 22; |
---|
905 | int use_socat = 0; |
---|
906 | int r; |
---|
907 | int socks[2]; |
---|
908 | |
---|
909 | if ( host == NULL ) |
---|
910 | return -1; |
---|
911 | |
---|
912 | if ( *host == '/' ) |
---|
913 | use_socat = 1; |
---|
914 | |
---|
915 | if ( mode == MODE_LISTEN ) |
---|
916 | return -1; |
---|
917 | |
---|
918 | if ( proxy_addr == NULL ) |
---|
919 | return -1; |
---|
920 | |
---|
921 | if ( opts != NULL ) { |
---|
922 | if ( !strcmp(opts, "socat") ) { |
---|
923 | use_socat = 1; |
---|
924 | } else if ( !strcmp(opts, "netcat") ) { |
---|
925 | use_socat = 0; |
---|
926 | } else { |
---|
927 | return -1; |
---|
928 | } |
---|
929 | } |
---|
930 | |
---|
931 | ROAR_DBG("roar_socket_open_ssh(*): proxy_addr='%s'", proxy_addr); |
---|
932 | |
---|
933 | if ( (sep = strstr(proxy_addr, "@")) != NULL ) |
---|
934 | proxy_addr = sep+1; |
---|
935 | |
---|
936 | if ( (sep = strstr(proxy_addr, ":")) != NULL ) { |
---|
937 | *sep = 0; |
---|
938 | proxy_port = atoi(sep+1); |
---|
939 | } |
---|
940 | |
---|
941 | |
---|
942 | if ( !strcmp(host, "+fork") ) { |
---|
943 | strncpy(rcmd, "roard --no-listen --client-fh 0", 32); |
---|
944 | } else { |
---|
945 | if ( use_socat ) { |
---|
946 | if ( *host == '/' ) { |
---|
947 | snprintf(rcmd, 1023, "socat stdio unix-connect:\"%s\"", host); |
---|
948 | } else { |
---|
949 | snprintf(rcmd, 1023, "socat stdio tcp:\"%s\":%i", host, port); |
---|
950 | } |
---|
951 | } else { |
---|
952 | snprintf(rcmd, 1023, "$(which netcat nc 2> /dev/null | grep -v \" \" | head -n 1) \"%s\" %i", host, port); |
---|
953 | } |
---|
954 | |
---|
955 | rcmd[1023] = 0; |
---|
956 | } |
---|
957 | |
---|
958 | ROAR_DBG("roar_socket_open_ssh(*): proxy_port=%i, user='%s', proxy_addr='%s'", proxy_port, user, proxy_addr); |
---|
959 | ROAR_DBG("roar_socket_open_ssh(*): rcmd: %s", rcmd); |
---|
960 | snprintf(cmd, 1023, ROAR_HAVE_BIN_SSH " -p %i -l '%s' '%s' '%s'", proxy_port, user, proxy_addr, rcmd); |
---|
961 | cmd[1023] = 0; |
---|
962 | |
---|
963 | |
---|
964 | if ( socketpair(AF_UNIX, SOCK_STREAM, 0, socks) == -1 ) { |
---|
965 | return -1; |
---|
966 | } |
---|
967 | |
---|
968 | r = fork(); |
---|
969 | |
---|
970 | if ( r == -1 ) { // error! |
---|
971 | ROAR_ERR("roar_socket_open_ssh(*): Can not fork: %s", strerror(errno)); |
---|
972 | close(socks[0]); |
---|
973 | close(socks[1]); |
---|
974 | return -1; |
---|
975 | } else if ( r == 0 ) { // we are the child |
---|
976 | close(socks[0]); |
---|
977 | |
---|
978 | close(ROAR_STDIN ); // we do not want roard to have any standard input |
---|
979 | close(ROAR_STDOUT); // STDOUT is also not needed, so we close it, |
---|
980 | // but STDERR we keep open for error messages. |
---|
981 | |
---|
982 | dup2(socks[1], 0); |
---|
983 | dup2(socks[1], 1); |
---|
984 | |
---|
985 | execlp("sh", "sh", "-c", cmd, NULL); |
---|
986 | |
---|
987 | // we are still alive? |
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988 | ROAR_ERR("roar_socket_open_ssh(*): alive after exec(), that's bad!"); |
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989 | _exit(1); |
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990 | } else { // we are the parent |
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991 | close(socks[1]); |
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992 | return socks[0]; |
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993 | } |
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994 | return -1; |
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995 | } |
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996 | #endif |
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997 | |
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998 | #endif // ROAR_SUPPORT_PROXY |
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999 | |
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1000 | //ll |
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