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Added some helper functions to set options to DHCP PDU. Added LGPL notice to dhcp.cpp

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This commit is contained in:
Matias Fontanini
2011-08-17 16:20:02 -03:00
parent 4dfa4d70eb
commit 24e314283f
3 changed files with 68 additions and 12 deletions
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38
src/dhcp.cpp
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@@ -1,3 +1,24 @@
/*
* libtins is a net packet wrapper library for crafting and
* interpreting sniffed packets.
*
* Copyright (C) 2011 Nasel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <cstring>
#include <cassert>
#include <iostream> //borrame
@@ -28,8 +49,17 @@ bool Tins::DHCP::add_option(Options opt, uint8_t len, uint8_t *val) {
return true;
}
void Tins::DHCP::add_type_option(Flags type) {
add_option(DHCP_MESSAGE_TYPE, 1, (uint8_t*)&type);
bool Tins::DHCP::add_type_option(Flags type) {
return add_option(DHCP_MESSAGE_TYPE, 1, (uint8_t*)&type);
}
bool Tins::DHCP::add_server_identifier(uint32_t ip) {
return add_option(DHCP_SERVER_IDENTIFIER, 4, (uint8_t*)&ip);
}
bool Tins::DHCP::add_lease_time(uint32_t time) {
time = Utils::net_to_host_l(time);
return add_option(DHCP_LEASE_TIME, 4, (uint8_t*)&time);
}
uint32_t Tins::DHCP::header_size() const {
@@ -43,10 +73,12 @@ void Tins::DHCP::write_serialization(uint8_t *buffer, uint32_t total_sz, const P
for(std::list<DHCPOption>::const_iterator it = _options.begin(); it != _options.end(); ++it) {
*(ptr++) = it->option;
*(ptr++) = it->length;
std::memcpy(ptr++, it->value, it->length);
std::memcpy(ptr, it->value, it->length);
ptr += it->length;
}
result[_size-1] = END;
vend(result, _size);
BootP::write_serialization(buffer, total_sz, parent);
delete[] result;
}