1 | //network.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 roard 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 | * RoarAudio 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 | */ |
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24 | |
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25 | #include "roard.h" |
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26 | |
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27 | #ifdef ROAR_SUPPORT_LISTEN |
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28 | |
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29 | #ifdef ROAR_BROKEN_PEERCRED |
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30 | #undef SO_PEERCRED |
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31 | #endif |
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32 | |
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33 | #ifdef ROAR_HAVE_SELECT |
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34 | #define _CAN_OPERATE |
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35 | #endif |
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36 | |
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37 | int net_check_listen (void) { |
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38 | #ifdef _CAN_OPERATE |
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39 | int r; |
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40 | fd_set sl; |
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41 | struct timeval tv; |
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42 | int i; |
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43 | int max_fh = -1; |
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44 | |
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45 | FD_ZERO(&sl); |
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46 | |
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47 | for (i = 0; i < ROAR_MAX_LISTEN_SOCKETS; i++) { |
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48 | if ( g_listen_socket[i] != -1 ) { |
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49 | if ( g_listen_socket[i] > max_fh ) |
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50 | max_fh = g_listen_socket[i]; |
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51 | |
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52 | FD_SET(g_listen_socket[i], &sl); |
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53 | } |
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54 | } |
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55 | |
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56 | if ( max_fh == -1 ) |
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57 | return 0; |
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58 | |
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59 | tv.tv_sec = 0; |
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60 | tv.tv_usec = 1; |
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61 | |
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62 | if ((r = select(max_fh + 1, &sl, NULL, NULL, &tv)) > 0) { |
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63 | ROAR_DBG("net_check_listen(void): We have a connection!"); |
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64 | for (i = 0; i < ROAR_MAX_LISTEN_SOCKETS; i++) { |
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65 | if ( g_listen_socket[i] != -1 ) { |
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66 | if ( FD_ISSET(g_listen_socket[i], &sl) ) { |
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67 | if ( net_get_new_client(g_listen_socket[i], g_listen_proto[i]) == -1 ) |
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68 | return -1; |
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69 | } |
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70 | } |
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71 | } |
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72 | } |
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73 | |
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74 | return r; |
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75 | #else |
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76 | return -1; |
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77 | #endif |
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78 | } |
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79 | |
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80 | #ifdef _CAN_OPERATE |
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81 | int net_get_new_client (int sock, int proto) { |
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82 | int fh; |
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83 | int client; |
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84 | struct roar_client * c; |
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85 | #ifdef SO_PEERCRED |
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86 | struct ucred cred; |
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87 | socklen_t cred_len = sizeof(cred); |
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88 | #endif |
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89 | struct roar_vio_calls vio; |
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90 | struct sockaddr_storage addr; |
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91 | socklen_t addrlen = sizeof(addr); |
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92 | |
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93 | fh = accept(sock, (struct sockaddr*)&addr, &addrlen); |
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94 | |
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95 | ROAR_DBG("net_get_new_client(void): fh = %i", fh); |
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96 | |
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97 | client = clients_new(); |
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98 | |
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99 | if ( clients_set_fh(client, fh) == -1 ) { |
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100 | ROAR_ERR("net_get_new_client(void): Can not set client's fh"); |
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101 | |
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102 | clients_delete(client); |
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103 | close(fh); |
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104 | |
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105 | ROAR_DBG("net_get_new_client(void) = -1"); |
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106 | return -1; |
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107 | } |
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108 | |
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109 | if ( clients_get(client, &c) != -1 ) { |
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110 | #ifdef SO_PEERCRED |
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111 | if (getsockopt(fh, SOL_SOCKET, SO_PEERCRED, &cred, &cred_len) != -1) { |
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112 | if ( cred.pid != 0 ) { |
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113 | c->pid = cred.pid; |
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114 | c->uid = cred.uid; |
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115 | c->gid = cred.gid; |
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116 | } |
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117 | } else { |
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118 | ROAR_DBG("req_on_identify(): Can't get creds via SO_PEERCRED: %s", strerror(errno)); |
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119 | } |
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120 | #elif defined(ROAR_HAVE_GETPEEREID) |
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121 | if (getpeereid(fh, &(c->uid), &(c->gid)) == -1) { |
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122 | ROAR_DBG("req_on_identify(): Can't get creds via getpeereid(): %s", strerror(errno)); |
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123 | } |
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124 | #endif |
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125 | |
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126 | if ( roar_nnode_free(&(c->nnode)) == -1 ) |
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127 | return -1; |
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128 | |
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129 | if ( roar_nnode_new_from_sockaddr(&(c->nnode), (struct sockaddr*)&addr, addrlen) == -1 ) |
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130 | return -1; |
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131 | } |
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132 | |
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133 | ROAR_DBG("net_get_new_client(*): proto=0x%.4x", proto); |
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134 | |
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135 | if ( clients_set_proto(client, proto) == -1 ) { |
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136 | ROAR_WARN("net_get_new_client(*): Setting proto(0x%.4x) of client %i failed.", proto, client); |
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137 | return -1; |
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138 | } |
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139 | |
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140 | switch (proto) { |
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141 | case ROAR_PROTO_ROARAUDIO: |
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142 | // nothing needed to be done here |
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143 | break; |
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144 | #ifndef ROAR_WITHOUT_DCOMP_EMUL_ESD |
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145 | #ifdef ROAR_HAVE_H_ESD |
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146 | case ROAR_PROTO_ESOUND: |
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147 | ROAR_DBG("net_get_new_client(*): execing ESD CONNECT command"); |
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148 | |
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149 | if ( roar_vio_open_fh_socket(&vio, fh) == -1 ) |
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150 | return -1; |
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151 | |
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152 | ROAR_DBG("net_get_new_client(*): creating VIO OK"); |
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153 | |
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154 | if ( emul_esd_exec_command(client, ESD_PROTO_CONNECT, &vio) == -1 ) |
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155 | return -1; |
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156 | |
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157 | ROAR_DBG("net_get_new_client(*): CONNECT execed sucessfully"); |
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158 | break; |
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159 | #endif |
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160 | #endif |
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161 | default: |
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162 | // OS independiend code to close the socket: |
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163 | if ( roar_vio_open_fh_socket(&vio, fh) == -1 ) |
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164 | return -1; |
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165 | roar_vio_close(&vio); |
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166 | return -1; |
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167 | break; |
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168 | } |
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169 | |
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170 | // close(fh); |
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171 | |
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172 | return 0; |
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173 | } |
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174 | #endif |
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175 | |
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176 | #endif |
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177 | |
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178 | //ll |
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