diff options
Diffstat (limited to 'tinyNET/src/dhcp6/tnet_dhcp6.c')
| -rw-r--r-- | tinyNET/src/dhcp6/tnet_dhcp6.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/tinyNET/src/dhcp6/tnet_dhcp6.c b/tinyNET/src/dhcp6/tnet_dhcp6.c new file mode 100644 index 0000000..cc52476 --- /dev/null +++ b/tinyNET/src/dhcp6/tnet_dhcp6.c @@ -0,0 +1,269 @@ +/*
+* Copyright (C) 2009-2010 Mamadou Diop.
+*
+* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
+*
+* This file is part of Open Source Doubango Framework.
+*
+* DOUBANGO is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* DOUBANGO is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with DOUBANGO.
+*
+*/
+/**@file tnet_dhcp6.c
+ * @brief Dynamic Host Configuration Protocol for IPv6 (DHCPv6) as per RFC 3315.
+ * Also implement: RFC 3319, 3633, 3646, 3736, 4242, 5007 ...
+ *
+ * @author Mamadou Diop <diopmamadou(at)doubango.org>
+ *
+ * @date Created: Sat Nov 8 16:54:58 2009 mdiop
+ */
+#include "tnet_dhcp6.h"
+
+#include "tsk_string.h"
+#include "tsk_debug.h"
+#include "tsk_memory.h"
+#include "tsk_time.h"
+#include "tsk_thread.h"
+
+
+/**@defgroup tnet_dhcp6_group DHCPv6 (RFC 3315) implementation.
+* Dynamic Host Configuration Protocol for IPv6 (DHCPv6) as per RFC 3315.
+* Also implement: RFC 3319, 3633, 3646, 3736, 4242, 5007 ...
+*/
+
+tnet_dhcp6_ctx_t* tnet_dhcp6_ctx_create()
+{
+ return tsk_object_new(tnet_dhcp6_ctx_def_t);
+}
+
+/**@ingroup tnet_dhcp6_group
+*/
+tnet_dhcp6_reply_t* tnet_dhcp6_send_request(const tnet_dhcp6_ctx_t* ctx, tnet_dhcp6_request_t* request)
+{
+ tsk_buffer_t *output;
+ tnet_dhcp6_reply_t* reply = 0;
+ int ret;
+ struct timeval tv;
+ fd_set set;
+ uint64_t timeout = 0;
+ tsk_list_item_t *item;
+ const tnet_interface_t *iface;
+ tnet_ip_t bestsource;
+
+ tnet_socket_t *localsocket6 = 0;
+ struct sockaddr_storage server;
+
+ if(!ctx || !request){
+ goto bail;
+ }
+
+ if((ret = tnet_getbestsource(TNET_DHCP6_All_DHCP_Relay_Agents_and_Servers, ctx->server_port, tnet_socket_type_udp_ipv6, &bestsource))){
+ TSK_DEBUG_WARN("Failed to get best source for [%s]:%u.", TNET_DHCP6_All_DHCP_Relay_Agents_and_Servers, ctx->server_port);
+ //fe80::21b:63ff:fea9:c14e%4
+ localsocket6 = tnet_socket_create(TNET_SOCKET_HOST_ANY, ctx->port_client, tnet_socket_type_udp_ipv6);
+ }
+ else{
+ localsocket6 = tnet_socket_create(bestsource, ctx->port_client, tnet_socket_type_udp_ipv6);
+ }
+
+ /* Check local socket. */
+ if(!TNET_SOCKET_IS_VALID(localsocket6)){
+ TSK_DEBUG_ERROR("Failed to create/bind DHCPv6 client socket.");
+ goto bail;
+ }
+
+ /* Always wait for 200ms before retransmission */
+ tv.tv_sec = 0;
+ tv.tv_usec = (200 * 1000);
+
+ if(tnet_sockaddr_init(TNET_DHCP6_All_DHCP_Relay_Agents_and_Servers, ctx->server_port, tnet_socket_type_udp_ipv6, &server)){
+ TNET_PRINT_LAST_ERROR("Failed to initialize the DHCPv6 server address.");
+ goto bail;
+ }
+
+ /* Set timeout */
+ timeout = tsk_time_epoch() + ctx->timeout;
+
+ do
+ {
+ tsk_list_foreach(item, ctx->interfaces){
+ iface = item->data;
+
+ /* Set FD */
+ FD_ZERO(&set);
+ FD_SET(localsocket6->fd, &set);
+
+ ///* ciaddr */
+ //if(request->type == dhcp_type_inform){
+ // struct sockaddr_storage ss;
+ // if(!tnet_get_sockaddr(localsocket4->fd, &ss)){
+ // uint32_t addr = tnet_htonl_2(&((struct sockaddr_in*)&ss)->sin_addr);
+ // memcpy(&request->ciaddr, &addr, 4);
+ // }
+ //}
+
+ ///* chaddr */
+ //memset(request->chaddr, 0, sizeof(request->chaddr));
+ //request->hlen = iface->mac_address_length > sizeof(request->chaddr) ? sizeof(request->chaddr) : iface->mac_address_length;
+ //memcpy(request->chaddr, iface->mac_address, request->hlen);
+
+ /* Serialize and send to the server. */
+ if(!(output = tnet_dhcp6_message_serialize(ctx, request))){
+ TSK_DEBUG_ERROR("Failed to serialize the DHCPv6 message.");
+ goto next_iface;
+ }
+ /* Send the request to the DHCP server */
+ if((ret =tnet_sockfd_sendto(localsocket6->fd, (const struct sockaddr*)&server, output->data, output->size))<0){
+ TNET_PRINT_LAST_ERROR("Failed to send DHCPv6 request.");
+
+ tsk_thread_sleep(150); // wait 150ms before trying the next iface.
+ goto next_iface;
+ }
+ /* wait for response */
+ if((ret = select(localsocket6->fd+1, &set, NULL, NULL, &tv))<0){ /* Error */
+ TNET_PRINT_LAST_ERROR("select have failed.");
+ tsk_thread_sleep(150); // wait 150ms before trying the next iface.
+ goto next_iface;
+ }
+ else if(ret == 0){ /* timeout ==> do nothing */
+ }
+ else{ /* there is data to read. */
+ tsk_size_t len = 0;
+ void* data = 0;
+
+ /* Check how how many bytes are pending */
+ if((ret = tnet_ioctlt(localsocket6->fd, FIONREAD, &len))<0){
+ goto next_iface;
+ }
+
+ /* Receive pending data */
+ data = tsk_calloc(len, sizeof(uint8_t));
+ if((ret = tnet_sockfd_recv(localsocket6->fd, data, len, 0))<0){
+ TSK_FREE(data);
+
+ TNET_PRINT_LAST_ERROR("Failed to receive DHCP dgrams.");
+ goto next_iface;
+ }
+
+ /* Parse the incoming response. */
+ reply = tnet_dhcp6_message_deserialize(ctx, data, (tsk_size_t)ret);
+ TSK_FREE(data);
+
+ if(reply)
+ { /* response successfuly parsed */
+ if(request->transaction_id != reply->transaction_id)
+ { /* Not same transaction id ==> continue*/
+ TSK_OBJECT_SAFE_FREE(reply);
+ }
+ }
+ }
+
+ next_iface:
+ TSK_OBJECT_SAFE_FREE(output);
+ if(reply){
+ goto bail;
+ }
+ }
+ break;//FIXME
+ }
+ while(timeout > tsk_time_epoch());
+
+bail:
+ TSK_OBJECT_SAFE_FREE(localsocket6);
+
+ return reply;
+}
+
+
+
+
+
+
+/**@ingroup tnet_dhcp6_group
+*/
+tnet_dhcp6_reply_t* tnet_dhcp6_requestinfo(const tnet_dhcp6_ctx_t* ctx, const tnet_dhcp6_option_orequest_t *orequest)
+{
+ tnet_dhcp6_reply_t* reply = 0;
+ tnet_dhcp6_request_t* request = tnet_dhcp6_request_create(dhcp6_type_information_request);
+ tnet_dhcp6_option_t* option = 0;
+
+ if(!ctx || !orequest || !request){
+ goto bail;
+ }
+
+ if((option = tnet_dhcp6_option_create(dhcp6_code_oro, orequest, sizeof(*orequest)))){
+ tsk_list_push_back_data(request->options, (void**)&option);
+ }
+
+ /* Vendor class */
+ {
+
+ }
+
+ reply = tnet_dhcp6_send_request(ctx, request);
+
+bail:
+
+ return reply;
+}
+
+
+
+
+
+//=================================================================================================
+// [[DHCPv6 CONTEXT]] object definition
+//
+static tsk_object_t* tnet_dhcp6_ctx_ctor(tsk_object_t * self, va_list * app)
+{
+ tnet_dhcp6_ctx_t *ctx = self;
+ if(ctx){
+ ctx->pen = TNET_IANA_PEN;
+ ctx->vendor_class_data = tsk_strdup(TNET_DHCP6_VENDOR_CLASS_DATA_DEFAULT);
+
+ ctx->port_client = TNET_DHCP6_CLIENT_PORT;
+ ctx->server_port = TNET_DHCP6_SERVER_PORT;
+ ctx->interfaces = tnet_get_interfaces();
+
+ ctx->timeout = 0xffff; /* FIXME */
+
+ if(!ctx->interfaces || TSK_LIST_IS_EMPTY(ctx->interfaces)){
+ TSK_DEBUG_ERROR("Failed to retrieve network interfaces.");
+ }
+
+ tsk_safeobj_init(ctx);
+ }
+ return self;
+}
+
+static tsk_object_t* tnet_dhcp6_ctx_dtor(tsk_object_t * self)
+{
+ tnet_dhcp6_ctx_t *ctx = self;
+ if(ctx){
+ tsk_safeobj_deinit(ctx);
+
+ TSK_FREE(ctx->vendor_class_data);
+
+ TSK_OBJECT_SAFE_FREE(ctx->interfaces);
+ }
+ return self;
+}
+
+static const tsk_object_def_t tnet_dhcp6_ctx_def_s =
+{
+ sizeof(tnet_dhcp6_ctx_t),
+ tnet_dhcp6_ctx_ctor,
+ tnet_dhcp6_ctx_dtor,
+ tsk_null,
+};
+const tsk_object_def_t *tnet_dhcp6_ctx_def_t = &tnet_dhcp6_ctx_def_s;
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