diff options
Diffstat (limited to 'tinyNET/src/dhcp/tnet_dhcp_option_sip.c')
| -rw-r--r-- | tinyNET/src/dhcp/tnet_dhcp_option_sip.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/tinyNET/src/dhcp/tnet_dhcp_option_sip.c b/tinyNET/src/dhcp/tnet_dhcp_option_sip.c new file mode 100644 index 0000000..69d564e --- /dev/null +++ b/tinyNET/src/dhcp/tnet_dhcp_option_sip.c @@ -0,0 +1,131 @@ +/*
+* 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_dhcp_option_sip.c
+ * @brief Dynamic Host Configuration Protocol (DHCP-for-IPv4) Option for
+ * Session Initiation Protocol (SIP) Servers as per RFC 3361.
+ *
+ * @author Mamadou Diop <diopmamadou(at)doubango.org>
+ *
+ * @date Created: Sat Nov 8 16:54:58 2009 mdiop
+ */
+#include "tnet_dhcp_option_sip.h"
+
+#include "dns/tnet_dns_rr.h"
+
+#include "../tnet_types.h"
+#include "../tnet_endianness.h"
+
+#include "tsk_memory.h"
+#include "tsk_string.h"
+
+tnet_dhcp_option_sip_t* tnet_dhcp_option_sip_create(const void* payload, tsk_size_t payload_size)
+{
+ return tsk_object_new(tnet_dhcp_option_sip_def_t, payload, payload_size);
+}
+
+//
+// [[DHCP SIP4]] object definition
+//
+static tsk_object_t* tnet_dhcp_option_sip_ctor(tsk_object_t * self, va_list * app)
+{
+ tnet_dhcp_option_sip_t *option = self;
+ if(option){
+ const void* payload = va_arg(*app, const void*);
+ tsk_size_t payload_size = va_arg(*app, tsk_size_t);
+
+ const uint8_t* payloadPtr = (const uint8_t*)payload;
+ const uint8_t* payloadEnd = (payloadPtr + payload_size);
+
+ /* init base */
+ tnet_dhcp_option_init(TNET_DHCP_OPTION(option), dhcp_code_SIP_Servers_DHCP_Option);
+
+ option->servers = tsk_list_create();
+
+ /* Set values as per RFC 3361. */
+ if(*payloadPtr == 0){ /* enc=0 */
+ /*
+ +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
+ |120|27 | 0 | 7 |'e'|'x'|'a'|'m'|'p'|'l'|'e'| 3 |'c'|'o'|'m'| 0 |
+ +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
+ +---+---+---+---+---+---+---+---+---+---+---+---+---+ | 7
+ |'e'|'x'|'a'|'m'|'p'|'l'|'e'| 3 |'n'|'e'|'t'| 0 | +---+---+---
+ +---+---+---+---+---+---+---+---+---+---+
+ */
+ tsk_size_t offset = 1;
+ char* server = 0;
+ payloadPtr++;
+ while((payloadPtr < payloadEnd) && !tnet_dns_rr_qname_deserialize(payload, &server, &offset)){
+ tsk_string_t* string = tsk_string_create(server);
+ tsk_list_push_back_data(option->servers, (void*)&string);
+ TSK_FREE(server);
+ payloadPtr += offset;
+ }
+ }
+ else{
+ /*
+ Code Len enc Address 1 Address 2
+ +-----+-----+-----+-----+-----+-----+-----+-----+--
+ | 120 | n | 1 | a1 | a2 | a3 | a4 | a1 | ...
+ +-----+-----+-----+-----+-----+-----+-----+-----+--
+ */
+ uint32_t address;
+ tsk_string_t* addrstring;
+ char* ip4 = 0;
+
+ while(payloadPtr < payloadEnd){
+ ++payloadPtr;
+ address = tnet_htonl_2(payloadPtr);
+
+ tsk_sprintf(&ip4, "%u.%u.%u.%u", (address>>24)&0xFF, (address>>16)&0xFF, (address>>8)&0xFF, (address>>0)&0xFF);
+
+ addrstring = tsk_string_create(ip4);
+ tsk_list_push_back_data(option->servers, (void*)&addrstring);
+
+ TSK_FREE(ip4);
+
+ payloadPtr+= 4;
+ }
+ }
+ }
+ return self;
+}
+
+static tsk_object_t* tnet_dhcp_option_sip_dtor(tsk_object_t * self)
+{
+ tnet_dhcp_option_sip_t *option = self;
+ if(option){
+ /* deinit base */
+ tnet_dhcp_option_deinit(TNET_DHCP_OPTION(option));
+
+ TSK_OBJECT_SAFE_FREE(option->servers);
+ }
+ return self;
+}
+
+static const tsk_object_def_t tnet_dhcp_option_sip_def_s =
+{
+ sizeof(tnet_dhcp_option_sip_t),
+ tnet_dhcp_option_sip_ctor,
+ tnet_dhcp_option_sip_dtor,
+ tsk_null,
+};
+const tsk_object_def_t *tnet_dhcp_option_sip_def_t = &tnet_dhcp_option_sip_def_s;
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