mirror of
https://github.com/zerotier/ZeroTierOne.git
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111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/* libanode: the Anode C reference implementation
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* Copyright (C) 2009-2010 Adam Ierymenko <adam.ierymenko@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <stdlib.h>
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#include <stdio.h>
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#include "impl/types.h"
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#include "impl/ec.h"
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#include "impl/misc.h"
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#include "anode.h"
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int AnodeIdentity_generate(AnodeIdentity *identity,const AnodeZone *zone,enum AnodeAddressType type)
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{
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struct AnodeECKeyPair kp;
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switch(type) {
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case ANODE_ADDRESS_ANODE_256_40:
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if (!AnodeECKeyPair_generate(&kp))
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return ANODE_ERR_OUT_OF_MEMORY;
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identity->address.bits[0] = (unsigned char)ANODE_ADDRESS_ANODE_256_40;
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identity->address.bits[1] = zone->bits[0];
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identity->address.bits[2] = zone->bits[1];
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identity->address.bits[3] = zone->bits[2];
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identity->address.bits[4] = zone->bits[3];
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identity->address.bits[5] = 0;
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identity->address.bits[6] = 0;
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Anode_memcpy((void *)&(identity->address.bits[7]),(const void *)kp.pub.key,ANODE_EC_PUBLIC_KEY_BYTES);
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Anode_memcpy((void *)identity->secret,(const void *)kp.priv.key,kp.priv.bytes);
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AnodeAddress_calc_short_id(&identity->address,&identity->address_id);
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AnodeECKeyPair_destroy(&kp);
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return 0;
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}
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return ANODE_ERR_INVALID_ARGUMENT;
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}
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int AnodeIdentity_to_string(const AnodeIdentity *identity,char *dest,int dest_len)
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{
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char hexbuf[128];
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char strbuf[128];
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int n;
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if ((n = AnodeAddress_to_string(&identity->address,strbuf,sizeof(strbuf))) <= 0)
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return n;
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switch(AnodeAddress_get_type(&identity->address)) {
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case ANODE_ADDRESS_ANODE_256_40:
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Anode_to_hex((const unsigned char *)identity->secret,ANODE_ADDRESS_SECRET_LENGTH_ANODE_256_40,hexbuf,sizeof(hexbuf));
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n = snprintf(dest,dest_len,"ANODE-256-40:%s:%s",strbuf,hexbuf);
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if (n >= dest_len)
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return ANODE_ERR_BUFFER_TOO_SMALL;
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return n;
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}
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return ANODE_ERR_INVALID_ARGUMENT;
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}
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int AnodeIdentity_from_string(AnodeIdentity *identity,const char *str)
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{
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char buf[1024];
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char *id_name;
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char *address;
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char *secret;
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int ec;
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Anode_str_copy(buf,str,sizeof(buf));
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id_name = buf;
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if (!id_name) return 0;
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if (!*id_name) return 0;
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address = (char *)Anode_strchr(id_name,':');
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if (!address) return 0;
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if (!*address) return 0;
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*(address++) = (char)0;
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secret = (char *)Anode_strchr(address,':');
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if (!secret) return 0;
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if (!*secret) return 0;
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*(secret++) = (char)0;
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if (Anode_strcaseeq("ANODE-256-40",id_name)) {
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if ((ec = AnodeAddress_from_string(address,&identity->address)))
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return ec;
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if (Anode_strlen(secret) != (ANODE_ADDRESS_SECRET_LENGTH_ANODE_256_40 * 2))
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return ANODE_ERR_INVALID_ARGUMENT;
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Anode_from_hex(secret,(unsigned char *)identity->secret,sizeof(identity->secret));
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AnodeAddress_calc_short_id(&identity->address,&identity->address_id);
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return 0;
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}
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return ANODE_ERR_INVALID_ARGUMENT;
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}
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