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store.c
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store.c
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// store.c
// ipdbtools
//
// Created by Dr. Rolf Jansen on 2016-07-10.
// Copyright © 2016-2018 Dr. Rolf Jansen. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdarg.h>
#include <stddef.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <time.h>
#include <math.h>
#include <syslog.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/time.h>
#include "utils.h"
#include "uint128t.h"
#include "store.h"
#pragma mark ••• AVL Tree of IPv4-Ranges •••
static int balanceIP4Node(IP4Node **node)
{
int change = 0;
IP4Node *o = *node;
IP4Node *p, *q;
if (o->B == -2)
{
if (p = o->L) // make the static analyzer happy
if (p->B == +1)
{
change = 1; // double left-right rotation
q = p->R; // left rotation
p->R = q->L;
q->L = p;
o->L = q->R; // right rotation
q->R = o;
o->B = +(q->B < 0);
p->B = -(q->B > 0);
q->B = 0;
*node = q;
}
else
{
change = p->B; // single right rotation
o->L = p->R;
p->R = o;
o->B = -(++p->B);
*node = p;
}
}
else if (o->B == +2)
{
if (q = o->R) // make the static analyzer happy
if (q->B == -1)
{
change = 1; // double right-left rotation
p = q->L; // right rotation
q->L = p->R;
p->R = q;
o->R = p->L; // left rotation
p->L = o;
o->B = -(p->B > 0);
q->B = +(p->B < 0);
p->B = 0;
*node = p;
}
else
{
change = q->B; // single left rotation
o->R = q->L;
q->L = o;
o->B = -(--q->B);
*node = q;
}
}
return change != 0;
}
static int pickPrevIP4Node(IP4Node **node, IP4Node **exch)
{ // *exch on entry = parent node
IP4Node *o = *node; // *exch on exit = picked previous value node
if (o->R)
{
*exch = o;
int change = -pickPrevIP4Node(&o->R, exch);
if (change)
if (abs(o->B += change) > 1)
return balanceIP4Node(node);
else
return o->B == 0;
else
return 0;
}
else if (o->L)
{
IP4Node *p = o->L;
o->L = NULL;
(*exch)->R = p;
*exch = o;
return p->B == 0;
}
else
{
(*exch)->R = NULL;
*exch = o;
return 1;
}
}
static int pickNextIP4Node(IP4Node **node, IP4Node **exch)
{ // *exch on entry = parent node
IP4Node *o = *node; // *exch on exit = picked next value node
if (o->L)
{
*exch = o;
int change = +pickNextIP4Node(&o->L, exch);
if (change)
if (abs(o->B += change) > 1)
return balanceIP4Node(node);
else
return o->B == 0;
else
return 0;
}
else if (o->R)
{
IP4Node *q = o->R;
o->R = NULL;
(*exch)->L = q;
*exch = o;
return q->B == 0;
}
else
{
(*exch)->L = NULL;
*exch = o;
return 1;
}
}
IP4Node *findIP4Node(uint32_t ip, IP4Node *node)
{
if (node)
{
if (node->lo <= ip && ip <= node->hi)
return node;
else if (ip < node->lo)
return findIP4Node(ip, node->L);
else // (ip > node->hi)
return findIP4Node(ip, node->R);
}
else
return NULL;
}
IP4Node *findNet4Node(uint32_t lo, uint32_t hi, uint32_t cc, char *nso, IP4Node *node)
{
if (node)
{
int ofs = ((cc) ? cc == node->cc : !strcmp(nso, node->nso));
if (node->lo <= lo && lo-ofs <= node->hi || node->lo <= hi+ofs && hi <= node->hi || lo <= node->lo && node->hi <= hi)
return node;
else if (lo < node->lo)
return findNet4Node(lo, hi, cc, nso, node->L);
else // ([lo|hi] > node->hi)
return findNet4Node(lo, hi, cc, nso, node->R);
}
else
return NULL;
}
int addIP4Node(uint32_t lo, uint32_t hi, uint32_t cc, char *nso, IP4Node **node)
{
IP4Node *o = *node;
if (o != NULL)
{
int change;
if (lo < o->lo)
change = -addIP4Node(lo, hi, cc, nso, &o->L);
else if (lo > o->lo)
change = +addIP4Node(lo, hi, cc, nso, &o->R);
else // (lo == o->lo) // this case must not happen !!!
return 0;
if (change)
if (abs(o->B += change) > 1)
return 1 - balanceIP4Node(node);
else
return o->B != 0;
else
return 0;
}
else // (o == NULL) // if the IP4Node is not in the tree
{ // then add it into a new leaf
if (o = allocate(sizeof(IP4Node), default_align, true))
{
o->lo = lo;
o->hi = hi;
o->cc = cc;
if(nso) switch(strvlen(nso))
{
default: // len < 32
strmlcpy(o->nso, nso, 32, NULL);
break;
case 32:
memvcpy(o->nso, nso, 32);
break;
case 36:
{
char *p = nso, *q = o->nso;
cpy8(q, p); p += 9, q += 8;
cpy4(q, p); p += 5, q += 4;
cpy4(q, p); p += 5, q += 4;
cpy4(q, p); p += 5, q += 4;
cpy12(q, p);
break;
}
}
*node = o; // report back the new node
return 1; // add the weight of 1 leaf onto the balance
}
return 0; // Out of Memory situation, nothing changed
}
}
int removeIP4Node(uint32_t ip, IP4Node **node)
{
IP4Node *o = *node;
if (o != NULL)
{
int change;
if (ip < o->lo)
change = +removeIP4Node(ip, &o->L);
else if (ip > o->lo)
change = -removeIP4Node(ip, &o->R);
else // (o->lo <= ip && ip <= o->lo)
{
int b = o->B;
IP4Node *p = o->L;
IP4Node *q = o->R;
if (!p || !q)
{
deallocate(VPR(*node), false);
*node = (p > q) ? p : q;
return 1; // remove the weight of 1 leaf from the balance
}
else
{
if (b == -1)
{
if (!p->R)
{
change = +1;
o = p;
o->R = q;
}
else
{
change = +pickPrevIP4Node(&p, &o);
o->L = p;
o->R = q;
}
}
else
{
if (!q->L)
{
change = -1;
o = q;
o->L = p;
}
else
{
change = -pickNextIP4Node(&q, &o);
o->L = p;
o->R = q;
}
}
o->B = b;
deallocate(VPR(*node), false);
*node = o;
}
}
if (change)
if (abs(o->B += change) > 1)
return balanceIP4Node(node);
else
return o->B == 0;
else
return 0;
}
else // (o == NULL)
return 0; // not found -> recursively do nothing
}
void serializeIP4Tree(FILE *out, IP4Node *node)
{
if (node)
{
if (node->L)
serializeIP4Tree(out, node->L);
fwrite(node, sizeof(IP4Set), 1, out);
if (node->R)
serializeIP4Tree(out, node->R);
}
}
void releaseIP4Tree(IP4Node *node)
{
if (node)
{
if (node->L)
releaseIP4Tree(node->L);
if (node->R)
releaseIP4Tree(node->R);
deallocate(VPR(node), false);
}
}
#pragma mark ••• AVL Tree of IPv6-Ranges •••
static int balanceIP6Node(IP6Node **node)
{
int change = 0;
IP6Node *o = *node;
IP6Node *p, *q;
if (o->B == -2)
{
if (p = o->L) // make the static analyzer happy
if (p->B == +1)
{
change = 1; // double left-right rotation
q = p->R; // left rotation
p->R = q->L;
q->L = p;
o->L = q->R; // right rotation
q->R = o;
o->B = +(q->B < 0);
p->B = -(q->B > 0);
q->B = 0;
*node = q;
}
else
{
change = p->B; // single right rotation
o->L = p->R;
p->R = o;
o->B = -(++p->B);
*node = p;
}
}
else if (o->B == +2)
{
if (q = o->R) // make the static analyzer happy
if (q->B == -1)
{
change = 1; // double right-left rotation
p = q->L; // right rotation
q->L = p->R;
p->R = q;
o->R = p->L; // left rotation
p->L = o;
o->B = -(p->B > 0);
q->B = +(p->B < 0);
p->B = 0;
*node = p;
}
else
{
change = q->B; // single left rotation
o->R = q->L;
q->L = o;
o->B = -(--q->B);
*node = q;
}
}
return change != 0;
}
static int pickPrevIP6Node(IP6Node **node, IP6Node **exch)
{ // *exch on entry = parent node
IP6Node *o = *node; // *exch on exit = picked previous value node
if (o->R)
{
*exch = o;
int change = -pickPrevIP6Node(&o->R, exch);
if (change)
if (abs(o->B += change) > 1)
return balanceIP6Node(node);
else
return o->B == 0;
else
return 0;
}
else if (o->L)
{
IP6Node *p = o->L;
o->L = NULL;
(*exch)->R = p;
*exch = o;
return p->B == 0;
}
else
{
(*exch)->R = NULL;
*exch = o;
return 1;
}
}
static int pickNextIP6Node(IP6Node **node, IP6Node **exch)
{ // *exch on entry = parent node
IP6Node *o = *node; // *exch on exit = picked next value node
if (o->L)
{
*exch = o;
int change = +pickNextIP6Node(&o->L, exch);
if (change)
if (abs(o->B += change) > 1)
return balanceIP6Node(node);
else
return o->B == 0;
else
return 0;
}
else if (o->R)
{
IP6Node *q = o->R;
o->R = NULL;
(*exch)->L = q;
*exch = o;
return q->B == 0;
}
else
{
(*exch)->L = NULL;
*exch = o;
return 1;
}
}
IP6Node *findIP6Node(uint128t ip, IP6Node *node)
{
if (node)
{
if (le_u128(node->lo, ip) && le_u128(ip, node->hi))
return node;
else if (lt_u128(ip, node->lo))
return findIP6Node(ip, node->L);
else // (gt_u128(ip, node->hi))
return findIP6Node(ip, node->R);
}
else
return NULL;
}
IP6Node *findNet6Node(uint128t lo, uint128t hi, uint32_t cc, char *nso, IP6Node *node)
{
if (node)
{
uint128t ofs = u64_to_u128t((cc) ? cc == node->cc : !strcmp(node->nso, nso));
if (le_u128(node->lo, lo) && le_u128(sub_u128(lo,ofs), node->hi) || le_u128(node->lo, add_u128(hi,ofs)) && le_u128(hi, node->hi) || le_u128(lo, node->lo) && le_u128(node->hi, hi))
return node;
else if (lt_u128(lo, node->lo))
return findNet6Node(lo, hi, cc, nso, node->L);
else // (gt_u128([lo|hi], node->hi))
return findNet6Node(lo, hi, cc, nso, node->R);
}
else
return NULL;
}
int addIP6Node(uint128t lo, uint128t hi, uint32_t cc, char *nso, IP6Node **node)
{
IP6Node *o = *node;
if (o != NULL)
{
int change;
if (lt_u128(lo, o->lo))
change = -addIP6Node(lo, hi, cc, nso, &o->L);
else if (gt_u128(lo, o->lo))
change = +addIP6Node(lo, hi, cc, nso, &o->R);
else // (eq_u128(lo, o->lo)) // this case must not happen !!!
return 0;
if (change)
if (abs(o->B += change) > 1)
return 1 - balanceIP6Node(node);
else
return o->B != 0;
else
return 0;
}
else // (o == NULL) // if the IP6Node is not in the tree
{ // then add it into a new leaf
if (o = allocate(sizeof(IP6Node), default_align, true))
{
o->lo = lo;
o->hi = hi;
o->cc = cc;
if(nso) switch(strvlen(nso))
{
default: // len < 32
strmlcpy(o->nso, nso, 32, NULL);
break;
case 32:
memvcpy(o->nso, nso, 32);
break;
case 36:
{
char *p = nso, *q = o->nso;
cpy8(q, p); p += 9, q += 8;
cpy4(q, p); p += 5, q += 4;
cpy4(q, p); p += 5, q += 4;
cpy4(q, p); p += 5, q += 4;
cpy12(q, p);
break;
}
}
*node = o; // report back the new node
return 1; // add the weight of 1 leaf onto the balance
}
return 0; // Out of Memory situation, nothing changed
}
}
int removeIP6Node(uint128t ip, IP6Node **node)
{
IP6Node *o = *node;
if (o != NULL)
{
int change;
if (lt_u128(ip, o->lo))
change = +removeIP6Node(ip, &o->L);
else if (gt_u128(ip, o->lo))
change = -removeIP6Node(ip, &o->R);
else // (le_u128(o->lo, ip) && le_u128(ip, o->lo))
{
int b = o->B;
IP6Node *p = o->L;
IP6Node *q = o->R;
if (!p || !q)
{
deallocate(VPR(*node), false);
*node = (p > q) ? p : q;
return 1; // remove the weight of 1 leaf from the balance
}
else
{
if (b == -1)
{
if (!p->R)
{
change = +1;
o = p;
o->R = q;
}
else
{
change = +pickPrevIP6Node(&p, &o);
o->L = p;
o->R = q;
}
}
else
{
if (!q->L)
{
change = -1;
o = q;
o->L = p;
}
else
{
change = -pickNextIP6Node(&q, &o);
o->L = p;
o->R = q;
}
}
o->B = b;
deallocate(VPR(*node), false);
*node = o;
}
}
if (change)
if (abs(o->B += change) > 1)
return balanceIP6Node(node);
else
return o->B == 0;
else
return 0;
}
else // (o == NULL)
return 0; // not found -> recursively do nothing
}
void serializeIP6Tree(FILE *out, IP6Node *node)
{
if (node)
{
if (node->L)
serializeIP6Tree(out, node->L);
fwrite(node, sizeof(IP6Set), 1, out);
if (node->R)
serializeIP6Tree(out, node->R);
}
}
void releaseIP6Tree(IP6Node *node)
{
if (node)
{
if (node->L)
releaseIP6Tree(node->L);
if (node->R)
releaseIP6Tree(node->R);
deallocate(VPR(node), false);
}
}
#pragma mark ••• AVL Tree of Country Codes •••
static int balanceCCNode(CCNode **node)
{
int change = 0;
CCNode *o = *node;
CCNode *p, *q;
if (o->B == -2)
{
if (p = o->L) // make the static analyzer happy
if (p->B == +1)
{
change = 1; // double left-right rotation
q = p->R; // left rotation
p->R = q->L;
q->L = p;
o->L = q->R; // right rotation
q->R = o;
o->B = +(q->B < 0);
p->B = -(q->B > 0);
q->B = 0;
*node = q;
}
else
{
change = p->B; // single right rotation
o->L = p->R;
p->R = o;
o->B = -(++p->B);
*node = p;
}
}
else if (o->B == +2)
{
if (q = o->R) // make the static analyzer happy
if (q->B == -1)
{
change = 1; // double right-left rotation
p = q->L; // right rotation
q->L = p->R;
p->R = q;
o->R = p->L; // left rotation
p->L = o;
o->B = -(p->B > 0);
q->B = +(p->B < 0);
p->B = 0;
*node = p;
}
else
{
change = q->B; // single left rotation
o->R = q->L;
q->L = o;
o->B = -(--q->B);
*node = q;
}
}
return change != 0;
}
static int pickPrevCCNode(CCNode **node, CCNode **exch)
{ // *exch on entry = parent node
CCNode *o = *node; // *exch on exit = picked previous value node
if (o->R)
{
*exch = o;
int change = -pickPrevCCNode(&o->R, exch);
if (change)
if (abs(o->B += change) > 1)
return balanceCCNode(node);
else
return o->B == 0;
else
return 0;
}
else if (o->L)
{
CCNode *p = o->L;
o->L = NULL;
(*exch)->R = p;
*exch = o;
return p->B == 0;
}
else
{
(*exch)->R = NULL;
*exch = o;
return 1;
}
}
static int pickNextCCNode(CCNode **node, CCNode **exch)
{ // *exch on entry = parent node
CCNode *o = *node; // *exch on exit = picked next value node
if (o->L)
{
*exch = o;
int change = +pickNextCCNode(&o->L, exch);
if (change)
if (abs(o->B += change) > 1)
return balanceCCNode(node);
else
return o->B == 0;
else
return 0;
}
else if (o->R)
{
CCNode *q = o->R;
o->R = NULL;
(*exch)->L = q;
*exch = o;
return q->B == 0;
}
else
{
(*exch)->L = NULL;
*exch = o;
return 1;
}
}
CCNode *findCCNode(uint32_t cc, CCNode *node)
{
if (node)
{
if (cc < node->cc)
return findCCNode(cc, node->L);
else if (cc > node->cc)
return findCCNode(cc, node->R);
else // (cc == node->cc)
return node;
}
else
return NULL;
}
int addCCNode(uint32_t cc, uint32_t val, CCNode **node)
{
CCNode *o = *node;
if (o != NULL)
{
int change;
if (cc < o->cc)
change = -addCCNode(cc, val, &o->L);
else if (cc > o->cc)
change = +addCCNode(cc, val, &o->R);
else // (cc == o->cc) // already in the tree
{
o->val = val; // update the value
return 0;
}
if (change)
if (abs(o->B += change) > 1)
return 1 - balanceCCNode(node);
else
return o->B != 0;
else
return 0;
}
else // (o == NULL) // if the CCNode is not in the tree
{ // then add it into a new leaf
if (o = allocate(sizeof(CCNode), default_align, true))
{
o->cc = cc;
o->val = val;
*node = o; // report back the new node
return 1; // add the weight of 1 leaf onto the balance
}
return 0; // Out of Memory situation, nothing changed
}
}
int removeCCNode(uint32_t cc, CCNode **node)
{
CCNode *o = *node;
if (o != NULL)
{
int change;
if (cc < o->cc)
change = +removeCCNode(cc, &o->L);
else if (cc > o->cc)
change = -removeCCNode(cc, &o->R);
else // (cc == o->cc)
{
int b = o->B;
CCNode *p = o->L;
CCNode *q = o->R;
if (!p || !q)
{
deallocate(VPR(*node), false);
*node = (p > q) ? p : q;
return 1; // remove the weight of 1 leaf from the balance
}
else
{
if (b == -1)
{
if (!p->R)
{
change = +1;
o = p;
o->R = q;
}
else
{
change = +pickPrevCCNode(&p, &o);
o->L = p;
o->R = q;
}
}
else
{
if (!q->L)
{
change = -1;
o = q;
o->L = p;
}
else
{
change = -pickNextCCNode(&q, &o);
o->L = p;
o->R = q;
}