1 | /*
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2 | Unix SMB/CIFS implementation.
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3 |
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4 | Socket IPv4/IPv6 functions
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5 |
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6 | Copyright (C) Stefan Metzmacher 2004
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7 | Copyright (C) Andrew Tridgell 2004-2005
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8 | Copyright (C) Jelmer Vernooij 2004
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9 |
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10 | This program 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 as published by
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12 | the Free Software Foundation; either version 3 of the License, or
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13 | (at your option) any later version.
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14 |
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15 | This program is distributed in the hope that it will be useful,
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | GNU General Public License for more details.
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19 |
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20 | You should have received a copy of the GNU General Public License
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21 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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22 | */
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23 |
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24 | #include "includes.h"
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25 | #include "system/filesys.h"
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26 | #include "lib/socket/socket.h"
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27 | #include "system/network.h"
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28 |
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29 | static NTSTATUS ipv4_init(struct socket_context *sock)
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30 | {
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31 | int type;
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32 |
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33 | switch (sock->type) {
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34 | case SOCKET_TYPE_STREAM:
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35 | type = SOCK_STREAM;
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36 | break;
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37 | case SOCKET_TYPE_DGRAM:
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38 | type = SOCK_DGRAM;
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39 | break;
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40 | default:
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41 | return NT_STATUS_INVALID_PARAMETER;
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42 | }
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43 |
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44 | sock->fd = socket(PF_INET, type, 0);
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45 | if (sock->fd == -1) {
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46 | return map_nt_error_from_unix(errno);
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47 | }
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48 |
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49 | sock->backend_name = "ipv4";
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50 | sock->family = AF_INET;
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51 |
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52 | return NT_STATUS_OK;
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53 | }
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54 |
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55 | static void ip_close(struct socket_context *sock)
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56 | {
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57 | close(sock->fd);
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58 | }
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59 |
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60 | static NTSTATUS ip_connect_complete(struct socket_context *sock, uint32_t flags)
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61 | {
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62 | int error=0, ret;
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63 | socklen_t len = sizeof(error);
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64 |
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65 | /* check for any errors that may have occurred - this is needed
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66 | for non-blocking connect */
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67 | ret = getsockopt(sock->fd, SOL_SOCKET, SO_ERROR, &error, &len);
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68 | if (ret == -1) {
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69 | return map_nt_error_from_unix(errno);
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70 | }
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71 | if (error != 0) {
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72 | return map_nt_error_from_unix(error);
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73 | }
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74 |
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75 | if (!(flags & SOCKET_FLAG_BLOCK)) {
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76 | ret = set_blocking(sock->fd, false);
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77 | if (ret == -1) {
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78 | return map_nt_error_from_unix(errno);
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79 | }
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80 | }
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81 |
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82 | sock->state = SOCKET_STATE_CLIENT_CONNECTED;
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83 |
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84 | return NT_STATUS_OK;
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85 | }
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86 |
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87 |
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88 | static NTSTATUS ipv4_connect(struct socket_context *sock,
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89 | const struct socket_address *my_address,
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90 | const struct socket_address *srv_address,
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91 | uint32_t flags)
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92 | {
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93 | struct sockaddr_in srv_addr;
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94 | struct in_addr my_ip;
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95 | struct in_addr srv_ip;
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96 | int ret;
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97 |
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98 | if (my_address && my_address->sockaddr) {
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99 | ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
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100 | if (ret == -1) {
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101 | return map_nt_error_from_unix(errno);
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102 | }
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103 | } else if (my_address) {
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104 | my_ip = interpret_addr2(my_address->addr);
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105 |
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106 | if (my_ip.s_addr != 0 || my_address->port != 0) {
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107 | struct sockaddr_in my_addr;
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108 | ZERO_STRUCT(my_addr);
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109 | #ifdef HAVE_SOCK_SIN_LEN
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110 | my_addr.sin_len = sizeof(my_addr);
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111 | #endif
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112 | my_addr.sin_addr.s_addr = my_ip.s_addr;
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113 | my_addr.sin_port = htons(my_address->port);
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114 | my_addr.sin_family = PF_INET;
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115 |
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116 | ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
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117 | if (ret == -1) {
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118 | return map_nt_error_from_unix(errno);
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119 | }
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120 | }
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121 | }
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122 |
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123 | if (srv_address->sockaddr) {
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124 | ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
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125 | if (ret == -1) {
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126 | return map_nt_error_from_unix(errno);
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127 | }
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128 | } else {
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129 | srv_ip = interpret_addr2(srv_address->addr);
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130 | if (!srv_ip.s_addr) {
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131 | return NT_STATUS_BAD_NETWORK_NAME;
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132 | }
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133 |
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134 | SMB_ASSERT(srv_address->port != 0);
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135 |
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136 | ZERO_STRUCT(srv_addr);
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137 | #ifdef HAVE_SOCK_SIN_LEN
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138 | srv_addr.sin_len = sizeof(srv_addr);
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139 | #endif
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140 | srv_addr.sin_addr.s_addr= srv_ip.s_addr;
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141 | srv_addr.sin_port = htons(srv_address->port);
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142 | srv_addr.sin_family = PF_INET;
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143 |
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144 | ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
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145 | if (ret == -1) {
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146 | return map_nt_error_from_unix(errno);
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147 | }
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148 | }
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149 |
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150 | return ip_connect_complete(sock, flags);
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151 | }
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152 |
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153 |
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154 | /*
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155 | note that for simplicity of the API, socket_listen() is also
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156 | use for DGRAM sockets, but in reality only a bind() is done
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157 | */
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158 | static NTSTATUS ipv4_listen(struct socket_context *sock,
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159 | const struct socket_address *my_address,
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160 | int queue_size, uint32_t flags)
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161 | {
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162 | struct sockaddr_in my_addr;
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163 | struct in_addr ip_addr;
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164 | int ret;
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165 |
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166 | socket_set_option(sock, "SO_REUSEADDR=1", NULL);
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167 |
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168 | if (my_address->sockaddr) {
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169 | ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
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170 | } else {
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171 | ip_addr = interpret_addr2(my_address->addr);
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172 |
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173 | ZERO_STRUCT(my_addr);
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174 | #ifdef HAVE_SOCK_SIN_LEN
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175 | my_addr.sin_len = sizeof(my_addr);
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176 | #endif
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177 | my_addr.sin_addr.s_addr = ip_addr.s_addr;
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178 | my_addr.sin_port = htons(my_address->port);
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179 | my_addr.sin_family = PF_INET;
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180 |
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181 | ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
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182 | }
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183 |
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184 | if (ret == -1) {
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185 | return map_nt_error_from_unix(errno);
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186 | }
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187 |
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188 | if (sock->type == SOCKET_TYPE_STREAM) {
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189 | ret = listen(sock->fd, queue_size);
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190 | if (ret == -1) {
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191 | return map_nt_error_from_unix(errno);
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192 | }
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193 | }
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194 |
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195 | if (!(flags & SOCKET_FLAG_BLOCK)) {
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196 | ret = set_blocking(sock->fd, false);
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197 | if (ret == -1) {
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198 | return map_nt_error_from_unix(errno);
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199 | }
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200 | }
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201 |
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202 | sock->state= SOCKET_STATE_SERVER_LISTEN;
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203 |
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204 | return NT_STATUS_OK;
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205 | }
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206 |
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207 | static NTSTATUS ipv4_accept(struct socket_context *sock, struct socket_context **new_sock)
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208 | {
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209 | struct sockaddr_in cli_addr;
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210 | socklen_t cli_addr_len = sizeof(cli_addr);
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211 | int new_fd;
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212 |
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213 | if (sock->type != SOCKET_TYPE_STREAM) {
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214 | return NT_STATUS_INVALID_PARAMETER;
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215 | }
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216 |
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217 | new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
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218 | if (new_fd == -1) {
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219 | return map_nt_error_from_unix(errno);
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220 | }
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221 |
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222 | if (!(sock->flags & SOCKET_FLAG_BLOCK)) {
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223 | int ret = set_blocking(new_fd, false);
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224 | if (ret == -1) {
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225 | close(new_fd);
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226 | return map_nt_error_from_unix(errno);
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227 | }
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228 | }
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229 |
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230 | /* TODO: we could add a 'accept_check' hook here
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231 | * which get the black/white lists via socket_set_accept_filter()
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232 | * or something like that
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233 | * --metze
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234 | */
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235 |
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236 | (*new_sock) = talloc(NULL, struct socket_context);
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237 | if (!(*new_sock)) {
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238 | close(new_fd);
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239 | return NT_STATUS_NO_MEMORY;
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240 | }
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241 |
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242 | /* copy the socket_context */
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243 | (*new_sock)->type = sock->type;
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244 | (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
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245 | (*new_sock)->flags = sock->flags;
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246 |
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247 | (*new_sock)->fd = new_fd;
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248 |
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249 | (*new_sock)->private_data = NULL;
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250 | (*new_sock)->ops = sock->ops;
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251 | (*new_sock)->backend_name = sock->backend_name;
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252 |
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253 | return NT_STATUS_OK;
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254 | }
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255 |
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256 | static NTSTATUS ip_recv(struct socket_context *sock, void *buf,
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257 | size_t wantlen, size_t *nread)
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258 | {
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259 | ssize_t gotlen;
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260 |
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261 | *nread = 0;
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262 |
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263 | gotlen = recv(sock->fd, buf, wantlen, 0);
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264 | if (gotlen == 0) {
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265 | return NT_STATUS_END_OF_FILE;
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266 | } else if (gotlen == -1) {
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267 | return map_nt_error_from_unix(errno);
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268 | }
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269 |
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270 | *nread = gotlen;
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271 |
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272 | return NT_STATUS_OK;
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273 | }
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274 |
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275 |
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276 | static NTSTATUS ipv4_recvfrom(struct socket_context *sock, void *buf,
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277 | size_t wantlen, size_t *nread,
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278 | TALLOC_CTX *addr_ctx, struct socket_address **_src)
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279 | {
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280 | ssize_t gotlen;
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281 | struct sockaddr_in *from_addr;
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282 | socklen_t from_len = sizeof(*from_addr);
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283 | struct socket_address *src;
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284 | char addrstring[INET_ADDRSTRLEN];
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285 |
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286 | src = talloc(addr_ctx, struct socket_address);
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287 | if (!src) {
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288 | return NT_STATUS_NO_MEMORY;
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289 | }
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290 |
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291 | src->family = sock->backend_name;
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292 |
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293 | from_addr = talloc(src, struct sockaddr_in);
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294 | if (!from_addr) {
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295 | talloc_free(src);
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296 | return NT_STATUS_NO_MEMORY;
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297 | }
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298 |
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299 | src->sockaddr = (struct sockaddr *)from_addr;
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300 |
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301 | *nread = 0;
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302 |
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303 | gotlen = recvfrom(sock->fd, buf, wantlen, 0,
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304 | src->sockaddr, &from_len);
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305 | if (gotlen == 0) {
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306 | talloc_free(src);
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307 | return NT_STATUS_END_OF_FILE;
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308 | } else if (gotlen == -1) {
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309 | talloc_free(src);
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310 | return map_nt_error_from_unix(errno);
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311 | }
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312 |
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313 | src->sockaddrlen = from_len;
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314 |
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315 | if (inet_ntop(AF_INET, &from_addr->sin_addr, addrstring,
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316 | sizeof(addrstring)) == NULL) {
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317 | talloc_free(src);
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318 | return NT_STATUS_INTERNAL_ERROR;
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319 | }
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320 | src->addr = talloc_strdup(src, addrstring);
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321 | if (src->addr == NULL) {
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322 | talloc_free(src);
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323 | return NT_STATUS_NO_MEMORY;
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324 | }
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325 | src->port = ntohs(from_addr->sin_port);
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326 |
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327 | *nread = gotlen;
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328 | *_src = src;
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329 | return NT_STATUS_OK;
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330 | }
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331 |
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332 | static NTSTATUS ip_send(struct socket_context *sock,
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333 | const DATA_BLOB *blob, size_t *sendlen)
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334 | {
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335 | ssize_t len;
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336 |
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337 | *sendlen = 0;
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338 |
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339 | len = send(sock->fd, blob->data, blob->length, 0);
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340 | if (len == -1) {
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341 | return map_nt_error_from_unix(errno);
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342 | }
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343 |
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344 | *sendlen = len;
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345 |
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346 | return NT_STATUS_OK;
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347 | }
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348 |
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349 | static NTSTATUS ipv4_sendto(struct socket_context *sock,
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350 | const DATA_BLOB *blob, size_t *sendlen,
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351 | const struct socket_address *dest_addr)
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352 | {
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353 | ssize_t len;
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354 |
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355 | if (dest_addr->sockaddr) {
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356 | len = sendto(sock->fd, blob->data, blob->length, 0,
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357 | dest_addr->sockaddr, dest_addr->sockaddrlen);
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358 | } else {
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359 | struct sockaddr_in srv_addr;
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360 | struct in_addr addr;
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361 |
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362 | SMB_ASSERT(dest_addr->port != 0);
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363 |
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364 | ZERO_STRUCT(srv_addr);
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365 | #ifdef HAVE_SOCK_SIN_LEN
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366 | srv_addr.sin_len = sizeof(srv_addr);
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367 | #endif
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368 | addr = interpret_addr2(dest_addr->addr);
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369 | if (addr.s_addr == 0) {
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370 | return NT_STATUS_HOST_UNREACHABLE;
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371 | }
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372 | srv_addr.sin_addr.s_addr = addr.s_addr;
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373 | srv_addr.sin_port = htons(dest_addr->port);
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374 | srv_addr.sin_family = PF_INET;
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375 |
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376 | *sendlen = 0;
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377 |
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378 | len = sendto(sock->fd, blob->data, blob->length, 0,
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379 | (struct sockaddr *)&srv_addr, sizeof(srv_addr));
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380 | }
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381 | if (len == -1) {
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382 | return map_nt_error_from_unix(errno);
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383 | }
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384 |
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385 | *sendlen = len;
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386 |
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387 | return NT_STATUS_OK;
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388 | }
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389 |
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390 | static NTSTATUS ipv4_set_option(struct socket_context *sock, const char *option, const char *val)
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391 | {
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392 | set_socket_options(sock->fd, option);
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393 | return NT_STATUS_OK;
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394 | }
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395 |
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396 | static char *ipv4_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
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397 | {
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398 | struct sockaddr_in peer_addr;
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399 | socklen_t len = sizeof(peer_addr);
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400 | struct hostent *he;
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401 | int ret;
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402 |
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403 | ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
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404 | if (ret == -1) {
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405 | return NULL;
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406 | }
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407 |
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408 | he = gethostbyaddr((char *)&peer_addr.sin_addr, sizeof(peer_addr.sin_addr), AF_INET);
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409 | if (he == NULL) {
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410 | return NULL;
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411 | }
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412 |
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413 | return talloc_strdup(mem_ctx, he->h_name);
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414 | }
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415 |
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416 | static struct socket_address *ipv4_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
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417 | {
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418 | struct sockaddr_in *peer_addr;
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419 | socklen_t len = sizeof(*peer_addr);
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420 | struct socket_address *peer;
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421 | char addrstring[INET_ADDRSTRLEN];
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422 | int ret;
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423 |
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424 | peer = talloc(mem_ctx, struct socket_address);
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425 | if (!peer) {
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426 | return NULL;
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427 | }
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428 |
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429 | peer->family = sock->backend_name;
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430 | peer_addr = talloc(peer, struct sockaddr_in);
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431 | if (!peer_addr) {
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432 | talloc_free(peer);
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433 | return NULL;
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434 | }
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435 |
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436 | peer->sockaddr = (struct sockaddr *)peer_addr;
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437 |
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438 | ret = getpeername(sock->fd, peer->sockaddr, &len);
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439 | if (ret == -1) {
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440 | talloc_free(peer);
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441 | return NULL;
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442 | }
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443 |
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444 | peer->sockaddrlen = len;
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445 |
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446 | if (inet_ntop(AF_INET, &peer_addr->sin_addr, addrstring,
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447 | sizeof(addrstring)) == NULL) {
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448 | talloc_free(peer);
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449 | return NULL;
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450 | }
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451 | peer->addr = talloc_strdup(peer, addrstring);
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452 | if (!peer->addr) {
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453 | talloc_free(peer);
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454 | return NULL;
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455 | }
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456 | peer->port = ntohs(peer_addr->sin_port);
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457 |
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458 | return peer;
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459 | }
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460 |
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461 | static struct socket_address *ipv4_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
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462 | {
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463 | struct sockaddr_in *local_addr;
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464 | socklen_t len = sizeof(*local_addr);
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465 | struct socket_address *local;
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---|
466 | char addrstring[INET_ADDRSTRLEN];
|
---|
467 | int ret;
|
---|
468 |
|
---|
469 | local = talloc(mem_ctx, struct socket_address);
|
---|
470 | if (!local) {
|
---|
471 | return NULL;
|
---|
472 | }
|
---|
473 |
|
---|
474 | local->family = sock->backend_name;
|
---|
475 | local_addr = talloc(local, struct sockaddr_in);
|
---|
476 | if (!local_addr) {
|
---|
477 | talloc_free(local);
|
---|
478 | return NULL;
|
---|
479 | }
|
---|
480 |
|
---|
481 | local->sockaddr = (struct sockaddr *)local_addr;
|
---|
482 |
|
---|
483 | ret = getsockname(sock->fd, local->sockaddr, &len);
|
---|
484 | if (ret == -1) {
|
---|
485 | talloc_free(local);
|
---|
486 | return NULL;
|
---|
487 | }
|
---|
488 |
|
---|
489 | local->sockaddrlen = len;
|
---|
490 |
|
---|
491 | if (inet_ntop(AF_INET, &local_addr->sin_addr, addrstring,
|
---|
492 | sizeof(addrstring)) == NULL) {
|
---|
493 | talloc_free(local);
|
---|
494 | return NULL;
|
---|
495 | }
|
---|
496 | local->addr = talloc_strdup(local, addrstring);
|
---|
497 | if (!local->addr) {
|
---|
498 | talloc_free(local);
|
---|
499 | return NULL;
|
---|
500 | }
|
---|
501 | local->port = ntohs(local_addr->sin_port);
|
---|
502 |
|
---|
503 | return local;
|
---|
504 | }
|
---|
505 | static int ip_get_fd(struct socket_context *sock)
|
---|
506 | {
|
---|
507 | return sock->fd;
|
---|
508 | }
|
---|
509 |
|
---|
510 | static NTSTATUS ip_pending(struct socket_context *sock, size_t *npending)
|
---|
511 | {
|
---|
512 | int value = 0;
|
---|
513 | if (ioctl(sock->fd, FIONREAD, &value) == 0) {
|
---|
514 | *npending = value;
|
---|
515 | return NT_STATUS_OK;
|
---|
516 | }
|
---|
517 | return map_nt_error_from_unix(errno);
|
---|
518 | }
|
---|
519 |
|
---|
520 | static const struct socket_ops ipv4_ops = {
|
---|
521 | .name = "ipv4",
|
---|
522 | .fn_init = ipv4_init,
|
---|
523 | .fn_connect = ipv4_connect,
|
---|
524 | .fn_connect_complete = ip_connect_complete,
|
---|
525 | .fn_listen = ipv4_listen,
|
---|
526 | .fn_accept = ipv4_accept,
|
---|
527 | .fn_recv = ip_recv,
|
---|
528 | .fn_recvfrom = ipv4_recvfrom,
|
---|
529 | .fn_send = ip_send,
|
---|
530 | .fn_sendto = ipv4_sendto,
|
---|
531 | .fn_pending = ip_pending,
|
---|
532 | .fn_close = ip_close,
|
---|
533 |
|
---|
534 | .fn_set_option = ipv4_set_option,
|
---|
535 |
|
---|
536 | .fn_get_peer_name = ipv4_get_peer_name,
|
---|
537 | .fn_get_peer_addr = ipv4_get_peer_addr,
|
---|
538 | .fn_get_my_addr = ipv4_get_my_addr,
|
---|
539 |
|
---|
540 | .fn_get_fd = ip_get_fd
|
---|
541 | };
|
---|
542 |
|
---|
543 | _PUBLIC_ const struct socket_ops *socket_ipv4_ops(enum socket_type type)
|
---|
544 | {
|
---|
545 | return &ipv4_ops;
|
---|
546 | }
|
---|
547 |
|
---|
548 | #if HAVE_IPV6
|
---|
549 |
|
---|
550 | static struct in6_addr interpret_addr6(const char *name)
|
---|
551 | {
|
---|
552 | char addr[INET6_ADDRSTRLEN];
|
---|
553 | struct in6_addr dest6;
|
---|
554 | const char *sp = name;
|
---|
555 | char *p;
|
---|
556 | int ret;
|
---|
557 |
|
---|
558 | if (sp == NULL) return in6addr_any;
|
---|
559 |
|
---|
560 | p = strchr_m(sp, '%');
|
---|
561 |
|
---|
562 | if (strcasecmp(sp, "localhost") == 0) {
|
---|
563 | sp = "::1";
|
---|
564 | }
|
---|
565 |
|
---|
566 | /*
|
---|
567 | * Cope with link-local.
|
---|
568 | * This is IP:v6:addr%ifname.
|
---|
569 | */
|
---|
570 |
|
---|
571 | if (p && (p > sp) && (if_nametoindex(p+1) != 0)) {
|
---|
572 | strlcpy(addr, sp,
|
---|
573 | MIN(PTR_DIFF(p,sp)+1,
|
---|
574 | sizeof(addr)));
|
---|
575 | sp = addr;
|
---|
576 | }
|
---|
577 |
|
---|
578 | ret = inet_pton(AF_INET6, sp, &dest6);
|
---|
579 | if (ret > 0) {
|
---|
580 | return dest6;
|
---|
581 | }
|
---|
582 |
|
---|
583 | return in6addr_any;
|
---|
584 | }
|
---|
585 |
|
---|
586 | static NTSTATUS ipv6_init(struct socket_context *sock)
|
---|
587 | {
|
---|
588 | int type;
|
---|
589 |
|
---|
590 | switch (sock->type) {
|
---|
591 | case SOCKET_TYPE_STREAM:
|
---|
592 | type = SOCK_STREAM;
|
---|
593 | break;
|
---|
594 | case SOCKET_TYPE_DGRAM:
|
---|
595 | type = SOCK_DGRAM;
|
---|
596 | break;
|
---|
597 | default:
|
---|
598 | return NT_STATUS_INVALID_PARAMETER;
|
---|
599 | }
|
---|
600 |
|
---|
601 | sock->fd = socket(PF_INET6, type, 0);
|
---|
602 | if (sock->fd == -1) {
|
---|
603 | return map_nt_error_from_unix(errno);
|
---|
604 | }
|
---|
605 |
|
---|
606 | sock->backend_name = "ipv6";
|
---|
607 | sock->family = AF_INET6;
|
---|
608 |
|
---|
609 | return NT_STATUS_OK;
|
---|
610 | }
|
---|
611 |
|
---|
612 | static NTSTATUS ipv6_tcp_connect(struct socket_context *sock,
|
---|
613 | const struct socket_address *my_address,
|
---|
614 | const struct socket_address *srv_address,
|
---|
615 | uint32_t flags)
|
---|
616 | {
|
---|
617 | int ret;
|
---|
618 |
|
---|
619 | if (my_address && my_address->sockaddr) {
|
---|
620 | ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
|
---|
621 | if (ret == -1) {
|
---|
622 | return map_nt_error_from_unix(errno);
|
---|
623 | }
|
---|
624 | } else if (my_address) {
|
---|
625 | struct in6_addr my_ip;
|
---|
626 | my_ip = interpret_addr6(my_address->addr);
|
---|
627 |
|
---|
628 | if (memcmp(&my_ip, &in6addr_any, sizeof(my_ip)) || my_address->port != 0) {
|
---|
629 | struct sockaddr_in6 my_addr;
|
---|
630 | ZERO_STRUCT(my_addr);
|
---|
631 | my_addr.sin6_addr = my_ip;
|
---|
632 | my_addr.sin6_port = htons(my_address->port);
|
---|
633 | my_addr.sin6_family = PF_INET6;
|
---|
634 |
|
---|
635 | ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
|
---|
636 | if (ret == -1) {
|
---|
637 | return map_nt_error_from_unix(errno);
|
---|
638 | }
|
---|
639 | }
|
---|
640 | }
|
---|
641 |
|
---|
642 | if (srv_address->sockaddr) {
|
---|
643 | ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
|
---|
644 | } else {
|
---|
645 | struct in6_addr srv_ip;
|
---|
646 | struct sockaddr_in6 srv_addr;
|
---|
647 | srv_ip = interpret_addr6(srv_address->addr);
|
---|
648 | if (memcmp(&srv_ip, &in6addr_any, sizeof(srv_ip)) == 0) {
|
---|
649 | return NT_STATUS_BAD_NETWORK_NAME;
|
---|
650 | }
|
---|
651 |
|
---|
652 | ZERO_STRUCT(srv_addr);
|
---|
653 | srv_addr.sin6_addr = srv_ip;
|
---|
654 | srv_addr.sin6_port = htons(srv_address->port);
|
---|
655 | srv_addr.sin6_family = PF_INET6;
|
---|
656 |
|
---|
657 | ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
|
---|
658 | }
|
---|
659 | if (ret == -1) {
|
---|
660 | return map_nt_error_from_unix(errno);
|
---|
661 | }
|
---|
662 |
|
---|
663 | return ip_connect_complete(sock, flags);
|
---|
664 | }
|
---|
665 |
|
---|
666 | static NTSTATUS ipv6_listen(struct socket_context *sock,
|
---|
667 | const struct socket_address *my_address,
|
---|
668 | int queue_size, uint32_t flags)
|
---|
669 | {
|
---|
670 | struct sockaddr_in6 my_addr;
|
---|
671 | struct in6_addr ip_addr;
|
---|
672 | int ret;
|
---|
673 |
|
---|
674 | socket_set_option(sock, "SO_REUSEADDR=1", NULL);
|
---|
675 |
|
---|
676 | if (my_address->sockaddr) {
|
---|
677 | ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
|
---|
678 | } else {
|
---|
679 | ip_addr = interpret_addr6(my_address->addr);
|
---|
680 |
|
---|
681 | ZERO_STRUCT(my_addr);
|
---|
682 | my_addr.sin6_addr = ip_addr;
|
---|
683 | my_addr.sin6_port = htons(my_address->port);
|
---|
684 | my_addr.sin6_family = PF_INET6;
|
---|
685 |
|
---|
686 | ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
|
---|
687 | }
|
---|
688 |
|
---|
689 | if (ret == -1) {
|
---|
690 | return map_nt_error_from_unix(errno);
|
---|
691 | }
|
---|
692 |
|
---|
693 | if (sock->type == SOCKET_TYPE_STREAM) {
|
---|
694 | ret = listen(sock->fd, queue_size);
|
---|
695 | if (ret == -1) {
|
---|
696 | return map_nt_error_from_unix(errno);
|
---|
697 | }
|
---|
698 | }
|
---|
699 |
|
---|
700 | if (!(flags & SOCKET_FLAG_BLOCK)) {
|
---|
701 | ret = set_blocking(sock->fd, false);
|
---|
702 | if (ret == -1) {
|
---|
703 | return map_nt_error_from_unix(errno);
|
---|
704 | }
|
---|
705 | }
|
---|
706 |
|
---|
707 | sock->state= SOCKET_STATE_SERVER_LISTEN;
|
---|
708 |
|
---|
709 | return NT_STATUS_OK;
|
---|
710 | }
|
---|
711 |
|
---|
712 | static NTSTATUS ipv6_tcp_accept(struct socket_context *sock, struct socket_context **new_sock)
|
---|
713 | {
|
---|
714 | struct sockaddr_in cli_addr;
|
---|
715 | socklen_t cli_addr_len = sizeof(cli_addr);
|
---|
716 | int new_fd;
|
---|
717 |
|
---|
718 | if (sock->type != SOCKET_TYPE_STREAM) {
|
---|
719 | return NT_STATUS_INVALID_PARAMETER;
|
---|
720 | }
|
---|
721 |
|
---|
722 | new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
|
---|
723 | if (new_fd == -1) {
|
---|
724 | return map_nt_error_from_unix(errno);
|
---|
725 | }
|
---|
726 |
|
---|
727 | if (!(sock->flags & SOCKET_FLAG_BLOCK)) {
|
---|
728 | int ret = set_blocking(new_fd, false);
|
---|
729 | if (ret == -1) {
|
---|
730 | close(new_fd);
|
---|
731 | return map_nt_error_from_unix(errno);
|
---|
732 | }
|
---|
733 | }
|
---|
734 |
|
---|
735 | /* TODO: we could add a 'accept_check' hook here
|
---|
736 | * which get the black/white lists via socket_set_accept_filter()
|
---|
737 | * or something like that
|
---|
738 | * --metze
|
---|
739 | */
|
---|
740 |
|
---|
741 | (*new_sock) = talloc(NULL, struct socket_context);
|
---|
742 | if (!(*new_sock)) {
|
---|
743 | close(new_fd);
|
---|
744 | return NT_STATUS_NO_MEMORY;
|
---|
745 | }
|
---|
746 |
|
---|
747 | /* copy the socket_context */
|
---|
748 | (*new_sock)->type = sock->type;
|
---|
749 | (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
|
---|
750 | (*new_sock)->flags = sock->flags;
|
---|
751 |
|
---|
752 | (*new_sock)->fd = new_fd;
|
---|
753 |
|
---|
754 | (*new_sock)->private_data = NULL;
|
---|
755 | (*new_sock)->ops = sock->ops;
|
---|
756 | (*new_sock)->backend_name = sock->backend_name;
|
---|
757 |
|
---|
758 | return NT_STATUS_OK;
|
---|
759 | }
|
---|
760 |
|
---|
761 | static NTSTATUS ipv6_recvfrom(struct socket_context *sock, void *buf,
|
---|
762 | size_t wantlen, size_t *nread,
|
---|
763 | TALLOC_CTX *addr_ctx, struct socket_address **_src)
|
---|
764 | {
|
---|
765 | ssize_t gotlen;
|
---|
766 | struct sockaddr_in6 *from_addr;
|
---|
767 | socklen_t from_len = sizeof(*from_addr);
|
---|
768 | struct socket_address *src;
|
---|
769 | char addrstring[INET6_ADDRSTRLEN];
|
---|
770 |
|
---|
771 | src = talloc(addr_ctx, struct socket_address);
|
---|
772 | if (!src) {
|
---|
773 | return NT_STATUS_NO_MEMORY;
|
---|
774 | }
|
---|
775 |
|
---|
776 | src->family = sock->backend_name;
|
---|
777 |
|
---|
778 | from_addr = talloc(src, struct sockaddr_in6);
|
---|
779 | if (!from_addr) {
|
---|
780 | talloc_free(src);
|
---|
781 | return NT_STATUS_NO_MEMORY;
|
---|
782 | }
|
---|
783 |
|
---|
784 | src->sockaddr = (struct sockaddr *)from_addr;
|
---|
785 |
|
---|
786 | *nread = 0;
|
---|
787 |
|
---|
788 | gotlen = recvfrom(sock->fd, buf, wantlen, 0,
|
---|
789 | src->sockaddr, &from_len);
|
---|
790 | if (gotlen == 0) {
|
---|
791 | talloc_free(src);
|
---|
792 | return NT_STATUS_END_OF_FILE;
|
---|
793 | } else if (gotlen == -1) {
|
---|
794 | talloc_free(src);
|
---|
795 | return map_nt_error_from_unix(errno);
|
---|
796 | }
|
---|
797 |
|
---|
798 | src->sockaddrlen = from_len;
|
---|
799 |
|
---|
800 | if (inet_ntop(AF_INET6, &from_addr->sin6_addr, addrstring, sizeof(addrstring)) == NULL) {
|
---|
801 | DEBUG(0, ("Unable to convert address to string: %s\n", strerror(errno)));
|
---|
802 | talloc_free(src);
|
---|
803 | return NT_STATUS_INTERNAL_ERROR;
|
---|
804 | }
|
---|
805 |
|
---|
806 | src->addr = talloc_strdup(src, addrstring);
|
---|
807 | if (src->addr == NULL) {
|
---|
808 | talloc_free(src);
|
---|
809 | return NT_STATUS_NO_MEMORY;
|
---|
810 | }
|
---|
811 | src->port = ntohs(from_addr->sin6_port);
|
---|
812 |
|
---|
813 | *nread = gotlen;
|
---|
814 | *_src = src;
|
---|
815 | return NT_STATUS_OK;
|
---|
816 | }
|
---|
817 |
|
---|
818 | static NTSTATUS ipv6_sendto(struct socket_context *sock,
|
---|
819 | const DATA_BLOB *blob, size_t *sendlen,
|
---|
820 | const struct socket_address *dest_addr)
|
---|
821 | {
|
---|
822 | ssize_t len;
|
---|
823 |
|
---|
824 | if (dest_addr->sockaddr) {
|
---|
825 | len = sendto(sock->fd, blob->data, blob->length, 0,
|
---|
826 | dest_addr->sockaddr, dest_addr->sockaddrlen);
|
---|
827 | } else {
|
---|
828 | struct sockaddr_in6 srv_addr;
|
---|
829 | struct in6_addr addr;
|
---|
830 |
|
---|
831 | ZERO_STRUCT(srv_addr);
|
---|
832 | addr = interpret_addr6(dest_addr->addr);
|
---|
833 | if (addr.s6_addr == 0) {
|
---|
834 | return NT_STATUS_HOST_UNREACHABLE;
|
---|
835 | }
|
---|
836 | srv_addr.sin6_addr = addr;
|
---|
837 | srv_addr.sin6_port = htons(dest_addr->port);
|
---|
838 | srv_addr.sin6_family = PF_INET6;
|
---|
839 |
|
---|
840 | *sendlen = 0;
|
---|
841 |
|
---|
842 | len = sendto(sock->fd, blob->data, blob->length, 0,
|
---|
843 | (struct sockaddr *)&srv_addr, sizeof(srv_addr));
|
---|
844 | }
|
---|
845 | if (len == -1) {
|
---|
846 | return map_nt_error_from_unix(errno);
|
---|
847 | }
|
---|
848 |
|
---|
849 | *sendlen = len;
|
---|
850 |
|
---|
851 | return NT_STATUS_OK;
|
---|
852 | }
|
---|
853 |
|
---|
854 | static NTSTATUS ipv6_set_option(struct socket_context *sock, const char *option, const char *val)
|
---|
855 | {
|
---|
856 | set_socket_options(sock->fd, option);
|
---|
857 | return NT_STATUS_OK;
|
---|
858 | }
|
---|
859 |
|
---|
860 | static char *ipv6_tcp_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
|
---|
861 | {
|
---|
862 | struct sockaddr_in6 peer_addr;
|
---|
863 | socklen_t len = sizeof(peer_addr);
|
---|
864 | struct hostent *he;
|
---|
865 | int ret;
|
---|
866 |
|
---|
867 | ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
|
---|
868 | if (ret == -1) {
|
---|
869 | return NULL;
|
---|
870 | }
|
---|
871 |
|
---|
872 | he = gethostbyaddr((char *)&peer_addr.sin6_addr, sizeof(peer_addr.sin6_addr), AF_INET6);
|
---|
873 | if (he == NULL) {
|
---|
874 | return NULL;
|
---|
875 | }
|
---|
876 |
|
---|
877 | return talloc_strdup(mem_ctx, he->h_name);
|
---|
878 | }
|
---|
879 |
|
---|
880 | static struct socket_address *ipv6_tcp_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
|
---|
881 | {
|
---|
882 | struct sockaddr_in6 *peer_addr;
|
---|
883 | socklen_t len = sizeof(*peer_addr);
|
---|
884 | struct socket_address *peer;
|
---|
885 | int ret;
|
---|
886 | char addr[128];
|
---|
887 | const char *addr_ret;
|
---|
888 |
|
---|
889 | peer = talloc(mem_ctx, struct socket_address);
|
---|
890 | if (!peer) {
|
---|
891 | return NULL;
|
---|
892 | }
|
---|
893 |
|
---|
894 | peer->family = sock->backend_name;
|
---|
895 | peer_addr = talloc(peer, struct sockaddr_in6);
|
---|
896 | if (!peer_addr) {
|
---|
897 | talloc_free(peer);
|
---|
898 | return NULL;
|
---|
899 | }
|
---|
900 |
|
---|
901 | peer->sockaddr = (struct sockaddr *)peer_addr;
|
---|
902 |
|
---|
903 | ret = getpeername(sock->fd, peer->sockaddr, &len);
|
---|
904 | if (ret == -1) {
|
---|
905 | talloc_free(peer);
|
---|
906 | return NULL;
|
---|
907 | }
|
---|
908 |
|
---|
909 | peer->sockaddrlen = len;
|
---|
910 |
|
---|
911 | addr_ret = inet_ntop(AF_INET6, &peer_addr->sin6_addr, addr, sizeof(addr));
|
---|
912 | if (addr_ret == NULL) {
|
---|
913 | talloc_free(peer);
|
---|
914 | return NULL;
|
---|
915 | }
|
---|
916 |
|
---|
917 | peer->addr = talloc_strdup(peer, addr_ret);
|
---|
918 | if (peer->addr == NULL) {
|
---|
919 | talloc_free(peer);
|
---|
920 | return NULL;
|
---|
921 | }
|
---|
922 |
|
---|
923 | peer->port = ntohs(peer_addr->sin6_port);
|
---|
924 |
|
---|
925 | return peer;
|
---|
926 | }
|
---|
927 |
|
---|
928 | static struct socket_address *ipv6_tcp_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
|
---|
929 | {
|
---|
930 | struct sockaddr_in6 *local_addr;
|
---|
931 | socklen_t len = sizeof(*local_addr);
|
---|
932 | struct socket_address *local;
|
---|
933 | int ret;
|
---|
934 | char addrstring[INET6_ADDRSTRLEN];
|
---|
935 |
|
---|
936 | local = talloc(mem_ctx, struct socket_address);
|
---|
937 | if (!local) {
|
---|
938 | return NULL;
|
---|
939 | }
|
---|
940 |
|
---|
941 | local->family = sock->backend_name;
|
---|
942 | local_addr = talloc(local, struct sockaddr_in6);
|
---|
943 | if (!local_addr) {
|
---|
944 | talloc_free(local);
|
---|
945 | return NULL;
|
---|
946 | }
|
---|
947 |
|
---|
948 | local->sockaddr = (struct sockaddr *)local_addr;
|
---|
949 |
|
---|
950 | ret = getsockname(sock->fd, local->sockaddr, &len);
|
---|
951 | if (ret == -1) {
|
---|
952 | talloc_free(local);
|
---|
953 | return NULL;
|
---|
954 | }
|
---|
955 |
|
---|
956 | local->sockaddrlen = len;
|
---|
957 |
|
---|
958 | if (inet_ntop(AF_INET6, &local_addr->sin6_addr, addrstring,
|
---|
959 | sizeof(addrstring)) == NULL) {
|
---|
960 | DEBUG(0, ("Unable to convert address to string: %s\n",
|
---|
961 | strerror(errno)));
|
---|
962 | talloc_free(local);
|
---|
963 | return NULL;
|
---|
964 | }
|
---|
965 |
|
---|
966 | local->addr = talloc_strdup(mem_ctx, addrstring);
|
---|
967 | if (!local->addr) {
|
---|
968 | talloc_free(local);
|
---|
969 | return NULL;
|
---|
970 | }
|
---|
971 | local->port = ntohs(local_addr->sin6_port);
|
---|
972 |
|
---|
973 | return local;
|
---|
974 | }
|
---|
975 |
|
---|
976 | static const struct socket_ops ipv6_tcp_ops = {
|
---|
977 | .name = "ipv6",
|
---|
978 | .fn_init = ipv6_init,
|
---|
979 | .fn_connect = ipv6_tcp_connect,
|
---|
980 | .fn_connect_complete = ip_connect_complete,
|
---|
981 | .fn_listen = ipv6_listen,
|
---|
982 | .fn_accept = ipv6_tcp_accept,
|
---|
983 | .fn_recv = ip_recv,
|
---|
984 | .fn_recvfrom = ipv6_recvfrom,
|
---|
985 | .fn_send = ip_send,
|
---|
986 | .fn_sendto = ipv6_sendto,
|
---|
987 | .fn_pending = ip_pending,
|
---|
988 | .fn_close = ip_close,
|
---|
989 |
|
---|
990 | .fn_set_option = ipv6_set_option,
|
---|
991 |
|
---|
992 | .fn_get_peer_name = ipv6_tcp_get_peer_name,
|
---|
993 | .fn_get_peer_addr = ipv6_tcp_get_peer_addr,
|
---|
994 | .fn_get_my_addr = ipv6_tcp_get_my_addr,
|
---|
995 |
|
---|
996 | .fn_get_fd = ip_get_fd
|
---|
997 | };
|
---|
998 |
|
---|
999 | _PUBLIC_ const struct socket_ops *socket_ipv6_ops(enum socket_type type)
|
---|
1000 | {
|
---|
1001 | return &ipv6_tcp_ops;
|
---|
1002 | }
|
---|
1003 |
|
---|
1004 | #endif
|
---|