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db.go
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db.go
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package main
import (
"database/sql"
"fmt"
"iter"
"sync"
"time"
"github.com/jellydator/ttlcache/v3"
)
type rrF[rrType any] func(tableMap TableMap, stmtMap StmtMap, rrD rrType)
var initStmts = []string{
`
CREATE TABLE IF NOT EXISTS name
(
id INTEGER PRIMARY KEY,
name TEXT UNIQUE NOT NULL,
is_ns INTEGER NOT NULL DEFAULT FALSE,
is_mx INTEGER NOT NULL DEFAULT FALSE,
is_zone INTEGER NOT NULL DEFAULT FALSE,
is_rdns INTEGER NOT NULL DEFAULT FALSE,
cname_tgt_id INTEGER REFERENCES name(id),
parent_id INTEGER REFERENCES name(id),
etldp1_id INTEGER REFERENCES name(id),
registered INTEGER NOT NULL DEFAULT TRUE,
reg_checked INTEGER NOT NULL DEFAULT FALSE,
nsec_mapped INTEGER NOT NULL DEFAULT FALSE,
nsec_walked INTEGER NOT NULL DEFAULT FALSE,
mx_resolved INTEGER NOT NULL DEFAULT FALSE,
ns_resolved INTEGER NOT NULL DEFAULT FALSE,
glue_ns INTEGER NOT NULL DEFAULT FALSE, -- for zones; glue NS has been fetched from parent zone
addr_resolved INTEGER NOT NULL DEFAULT FALSE,
spf_tried INTEGER NOT NULL DEFAULT FALSE,
dmarc_tried INTEGER NOT NULL DEFAULT FALSE, -- so that '_dmarc.${name}' does not need to be stored
axfr_tried INTEGER NOT NULL DEFAULT FALSE,
valid INTEGER NOT NULL DEFAULT TRUE, -- has valid parent zone chain/TLD
valid_tried INTEGER NOT NULL DEFAULT FALSE, -- validation has been verified
parent_mapped INTEGER NOT NULL DEFAULT FALSE,
maybe_zone INTEGER NOT NULL DEFAULT FALSE,
maybe_checked INTEGER NOT NULL DEFAULT FALSE,
inserted INTEGER NOT NULL DEFAULT FALSE
)
`,
`
CREATE TABLE IF NOT EXISTS ip
(
id INTEGER PRIMARY KEY,
address TEXT UNIQUE NOT NULL,
rdns_mapped INTEGER NOT NULL DEFAULT FALSE,
responsive INTEGER NOT NULL DEFAULT TRUE,
ch_resolved INTEGER NOT NULL DEFAULT FALSE, -- Chaosnet class records, e.g version.bind
resp_checked INTEGER NOT NULL DEFAULT FALSE
)
`,
`
CREATE TABLE IF NOT EXISTS rdns
(
id INTEGER PRIMARY KEY,
ip_id INTEGER NOT NULL REFERENCES ip(id),
name_id INTEGER NOT NULL REFERENCES name(id),
UNIQUE(ip_id, name_id)
)
`,
`
CREATE TABLE IF NOT EXISTS zone_ns
(
id INTEGER PRIMARY KEY,
zone_id INTEGER NOT NULL REFERENCES name(id),
ns_id INTEGER NOT NULL REFERENCES name(id),
in_parent_zone INTEGER NOT NULL DEFAULT FALSE,
in_self_zone INTEGER NOT NULL DEFAULT FALSE,
UNIQUE(zone_id, ns_id)
)
`,
`
CREATE TABLE IF NOT EXISTS name_mx
(
id INTEGER PRIMARY KEY,
name_id INTEGER NOT NULL REFERENCES name(id),
mx_id INTEGER NOT NULL REFERENCES name(id),
preference INTEGER NOT NULL,
UNIQUE(name_id, mx_id)
)
`,
`
CREATE TABLE IF NOT EXISTS name_ip
(
id INTEGER PRIMARY KEY,
name_id INTEGER NOT NULL REFERENCES name(id),
ip_id INTEGER NOT NULL REFERENCES ip(id),
in_parent_zone_glue INTEGER NOT NULL DEFAULT FALSE,
in_self_zone INTEGER NOT NULL DEFAULT FALSE,
UNIQUE(name_id, ip_id)
)
`,
`
CREATE TABLE IF NOT EXISTS axfrable_ns
(
id INTEGER PRIMARY KEY,
ip_id INTEGER NOT NULL REFERENCES ip(id),
zone_id INTEGER NOT NULL REFERENCES name(id),
scan_time INTEGER NOT NULL DEFAULT 0,
UNIQUE(ip_id, zone_id)
)
`,
`
CREATE TABLE IF NOT EXISTS spf
(
id INTEGER PRIMARY KEY,
name_id INTEGER NOT NULL REFERENCES name(id),
spf_record_id INTEGER NOT NULL REFERENCES spf_record(id),
duplicate INTEGER NOT NULL DEFAULT FALSE,
UNIQUE(name_id, spf_record_id)
)
`,
`
CREATE TABLE IF NOT EXISTS spf_record
(
id INTEGER PRIMARY KEY,
value TEXT UNIQUE NOT NULL,
valid INTEGER NOT NULL DEFAULT TRUE,
error TEXT, -- if valid == false, explain why
any_unknown INTEGER NOT NULL DEFAULT FALSE -- any unknown modifiers
)
`,
`
CREATE TABLE IF NOT EXISTS spf_name -- for DNS names scraped from the SPF record
(
id INTEGER PRIMARY KEY,
spf_record_id INTEGER NOT NULL REFERENCES spf_record(id),
name_id INTEGER NOT NULL REFERENCES name(id),
spfname INTEGER NOT NULL, -- bool, indicates names with additional spf records to fetch
UNIQUE(spf_record_id, name_id)
)
`,
`
CREATE TABLE IF NOT EXISTS dmarc_record
(
id INTEGER PRIMARY KEY,
value TEXT UNIQUE NOT NULL,
valid INTEGER NOT NULL DEFAULT TRUE,
error TEXT -- if valid == false, explain why
)
`,
`
CREATE TABLE IF NOT EXISTS dmarc
(
id INTEGER PRIMARY KEY,
name_id INTEGER NOT NULL REFERENCES name(id),
dmarc_record_id INTEGER NOT NULL REFERENCES dmarc_record(id),
duplicate INTEGER NOT NULL DEFAULT FALSE,
UNIQUE(name_id, dmarc_record_id)
)
`,
`
CREATE TABLE IF NOT EXISTS rr_type
(
id INTEGER PRIMARY KEY,
name TEXT UNIQUE NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS rr_name
(
id INTEGER PRIMARY KEY,
name TEXT UNIQUE NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS rr_value
(
id INTEGER PRIMARY KEY,
value TEXT UNIQUE NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS zone2rr
(
id INTEGER PRIMARY KEY,
parsed INTEGER NOT NULL DEFAULT FALSE,
zone_id INTEGER NOT NULL REFERENCES name(id),
rr_type_id INTEGER NOT NULL REFERENCES rr_type(id),
rr_name_id INTEGER NOT NULL REFERENCES rr_name(id),
rr_value_id INTEGER NOT NULL REFERENCES rr_value(id),
inserted INTEGER NOT NULL DEFAULT FALSE,
from_parent INTEGER NOT NULL DEFAULT FALSE,
from_self INTEGER NOT NULL DEFAULT FALSE,
poison INTEGER NOT NULL DEFAULT FALSE,
UNIQUE(zone_id, rr_type_id, rr_name_id, rr_value_id)
)
`,
`
CREATE TABLE IF NOT EXISTS rname
(
id INTEGER PRIMARY KEY,
name TEXT UNIQUE NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS mname
(
id INTEGER PRIMARY KEY,
name TEXT UNIQUE NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS nsec_state
(
id INTEGER PRIMARY KEY,
name TEXT UNIQUE NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS zone_nsec_state
(
id INTEGER PRIMARY KEY,
zone_id INTEGER NOT NULL REFERENCES name(id),
nsec_state_id INTEGER NOT NULL REFERENCES nsec_state(id),
rname_id INTEGER NOT NULL REFERENCES rname(id),
mname_id INTEGER NOT NULL REFERENCES mname(id),
nsec TEXT NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS zone_walk_res
(
id INTEGER PRIMARY KEY,
zone_id INTEGER NOT NULL REFERENCES name(id),
rr_name_id INTEGER NOT NULL REFERENCES rr_name(id),
rr_type_id INTEGER NOT NULL REFERENCES rr_type(id),
queried INTEGER NOT NULL DEFAULT FALSE,
UNIQUE(zone_id, rr_name_id, rr_type_id)
)
`,
`
INSERT OR IGNORE INTO nsec_state (id, name) VALUES
(1, 'unknown' ),
(2, 'secure_nsec' ),
(3, 'plain_nsec' ),
(4, 'nsec3' ),
(5, 'nsec_confusion')
`,
`
CREATE TABLE IF NOT EXISTS unwalked_root
(
id INTEGER PRIMARY KEY,
name TEXT UNIQUE NOT NULL,
ent INTEGER NOT NULL DEFAULT FALSE
)
`,
`
CREATE TABLE IF NOT EXISTS chaos_query
(
id INTEGER PRIMARY KEY,
name_id INTEGER NOT NULL REFERENCES name(id), -- e.g version.bind.
ip_id INTEGER NOT NULL REFERENCES ip(id),
UNIQUE(name_id, ip_id)
)
`,
`
CREATE TABLE IF NOT EXISTS chaos_response_value
(
id INTEGER PRIMARY KEY,
value TEXT UNIQUE NOT NULL
)
`,
`
CREATE TABLE IF NOT EXISTS chaos_response
(
id INTEGER PRIMARY KEY,
chaos_query_id INTEGER NOT NULL REFERENCES chaos_query(id),
name_id INTEGER NOT NULL REFERENCES name(id), -- name in response may not match name in query
chaos_response_value_id INTEGER NOT NULL REFERENCES chaos_response_value(id),
UNIQUE(chaos_query_id, chaos_response_value_id)
)
`,
}
type tableData struct {
fieldName string
cache *ttlcache.Cache[string, int64]
loader ttlcache.Option[string, int64]
roLoader ttlcache.Option[string, int64]
cleanup func()
}
type stmtData struct {
stmt *sql.Stmt
query string
}
type msgtype uint8
const (
rrDataRegular msgtype = iota + 1
rrDataZoneDone
rrDataZoneAxfrEnd
rrDataZoneAxfrTry
)
type rrData struct {
zone string
rrValue string
rrType string
rrName string
ip string
scanned int64
msgtype
parentZone bool
selfZone bool
}
type StmtMap struct {
data map[string]*stmtData
mx *sync.RWMutex
wg *sync.WaitGroup
}
type TableMap struct {
data map[string]*tableData
mx *sync.RWMutex
wg *sync.WaitGroup
}
type FDCache struct {
cache *ttlcache.Cache[string, []fieldData]
loader ttlcache.Option[string, []fieldData]
cleanup func()
qs string
}
type rrDBData struct {
id int64
rrType fieldData
rrName fieldData
rrValue fieldData
fromParent bool
fromSelf bool
}
type nsecWalkResolveRes struct {
rrDBData
results []rrData
}
func initDb(db *sql.DB) {
tx := check1(db.Begin())
for _, stmt := range initStmts {
check1(tx.Exec(stmt))
}
check(tx.Commit())
}
func getFDCLoader(qs string, tx *sql.Tx) (ttlcache.Option[string, []fieldData], func()) {
stmt := check1(tx.Prepare(qs))
cacheF := ttlcache.WithLoader[string, []fieldData](ttlcache.LoaderFunc[string, []fieldData](func(c *ttlcache.Cache[string, []fieldData], zone string) *ttlcache.Item[string, []fieldData] {
rows := check1(stmt.Query(zone))
var ret []fieldData
for rows.Next() {
var fd fieldData
check(rows.Scan(&fd.name, &fd.id))
ret = append(ret, fd)
}
return c.Set(zone, ret, 0)
}))
cleanup := func() {
check(stmt.Close())
}
return cacheF, cleanup
}
func getFDCache(qs string, tx *sql.Tx) *FDCache {
getF, cleanup := getFDCLoader(qs, tx)
cache := ttlcache.New(
ttlcache.WithTTL[string, []fieldData](1 * time.Minute),
)
go cache.Start()
return &FDCache{cache: cache, cleanup: cleanup, qs: qs, loader: getF}
}
func (fdc *FDCache) clear() {
fdc.cleanup()
fdc.cache.Stop()
fdc.cache.DeleteAll()
}
func (fdc *FDCache) getName(zone string) []string {
fds := fdc.cache.Get(zone, fdc.loader).Value()
names := make([]string, 0, len(fds))
for _, fd := range fds {
names = append(names, fd.name)
}
return names
}
func getTableMap(m map[string]string, tx *sql.Tx) TableMap {
tableMap := make(map[string]*tableData)
for tableName, fieldName := range m {
getF, rwCleanup := createInsertF(tx, tableName, fieldName)
roGetF, roCleanup := createROGetF(tx, tableName, fieldName)
cleanup := func() {
rwCleanup()
roCleanup()
}
cache := ttlcache.New(
ttlcache.WithTTL[string, int64](1 * time.Minute),
)
go cache.Start()
tableMap[tableName] = &tableData{
fieldName: fieldName,
cache: cache,
cleanup: cleanup,
loader: getF,
roLoader: roGetF,
}
}
return TableMap{
data: tableMap,
mx: new(sync.RWMutex),
wg: new(sync.WaitGroup),
}
}
func (tableMap TableMap) update(tx *sql.Tx) {
// needs lock to be locked externally
for tableName, td := range tableMap.data {
td.cleanup()
var rwCleanup, roCleanup func()
td.loader, rwCleanup = createInsertF(tx, tableName, td.fieldName)
td.roLoader, roCleanup = createROGetF(tx, tableName, td.fieldName)
td.cleanup = func() {
rwCleanup()
roCleanup()
}
}
}
func (tableMap TableMap) get(table, key string) int64 {
tableMap.mx.RLock()
td := tableMap.data[table]
ret := td.cache.Get(key, td.loader).Value()
tableMap.mx.RUnlock()
return ret
}
func (tableMap TableMap) roGet(table, key string) int64 {
var ret int64
tableMap.mx.RLock()
td := tableMap.data[table]
if item := td.cache.Get(key, td.roLoader); item != nil {
ret = item.Value()
}
tableMap.mx.RUnlock()
return ret
}
func (tableMap TableMap) clear() {
tableMap.wg.Wait()
tableMap.mx.Lock()
for _, td := range tableMap.data {
td.cleanup()
td.cache.Stop()
td.cache.DeleteAll()
}
// tableMap.mx.Unlock()
}
func getStmtMap(m map[string]string, tx *sql.Tx) StmtMap {
stmtMap := make(map[string]*stmtData)
for name, query := range m {
stmt := check1(tx.Prepare(query))
stmtMap[name] = &stmtData{stmt: stmt, query: query}
}
return StmtMap{
data: stmtMap,
mx: new(sync.RWMutex),
wg: new(sync.WaitGroup),
}
}
// needs lock to be locked externally
func (stmtMap StmtMap) update(tx *sql.Tx) {
for _, std := range stmtMap.data {
check(std.stmt.Close())
std.stmt = check1(tx.Prepare(std.query))
}
}
func (stmtMap StmtMap) exec(ident string, args ...any) {
stmtMap.mx.RLock()
check1(stmtMap.data[ident].stmt.Exec(args...))
stmtMap.mx.RUnlock()
}
func (stmtMap StmtMap) clear() {
stmtMap.wg.Wait()
stmtMap.mx.Lock()
for _, std := range stmtMap.data {
check(std.stmt.Close())
}
// stmtMap.mx.Unlock()
}
func createInsertF(tx *sql.Tx, tableName string, valueName string) (ttlcache.Option[string, int64], func()) {
selectStmt := check1(tx.Prepare(fmt.Sprintf("SELECT id FROM %s WHERE %s=? LIMIT 1", tableName, valueName)))
insertStmt := check1(tx.Prepare(fmt.Sprintf("INSERT INTO %s (%s) VALUES (?)", tableName, valueName)))
cacheF := ttlcache.WithLoader[string, int64](ttlcache.LoaderFunc[string, int64](func(c *ttlcache.Cache[string, int64], arg string) *ttlcache.Item[string, int64] {
rows := check1(selectStmt.Query(arg))
var lastID int64
if rows.Next() {
check(rows.Scan(&lastID))
} else {
res := check1(insertStmt.Exec(arg))
lastID = check1(res.LastInsertId())
}
check(rows.Close())
return c.Set(arg, lastID, 0)
}))
cleanupF := func() {
check(selectStmt.Close())
check(insertStmt.Close())
}
return cacheF, cleanupF
}
func createROGetF(tx *sql.Tx, tableName string, valueName string) (ttlcache.Option[string, int64], func()) {
selectStmt := check1(tx.Prepare(fmt.Sprintf("SELECT id FROM %s WHERE %s=? LIMIT 1", tableName, valueName)))
cacheF := ttlcache.WithLoader[string, int64](ttlcache.LoaderFunc[string, int64](func(c *ttlcache.Cache[string, int64], arg string) *ttlcache.Item[string, int64] {
rows := check1(selectStmt.Query(arg))
var item *ttlcache.Item[string, int64]
var lastID int64
if rows.Next() {
check(rows.Scan(&lastID))
item = c.Set(arg, lastID, 0)
}
check(rows.Close())
return item
}))
cleanupF := func() {
check(selectStmt.Close())
}
return cacheF, cleanupF
}
func insertRR[rrType any](db *sql.DB, seq iter.Seq[rrType], tablesFields, namesStmts map[string]string, rrF rrF[rrType]) {
tx := check1(db.Begin())
tableMap := getTableMap(tablesFields, tx)
stmtMap := getStmtMap(namesStmts, tx)
i := CHUNKSIZE
for rrD := range bufferedSeq(seq, MIDBUFLEN) {
if i == 0 {
i = CHUNKSIZE
tableMap.mx.Lock()
stmtMap.mx.Lock()
check(tx.Commit())
tx = check1(db.Begin())
tableMap.update(tx)
stmtMap.update(tx)
stmtMap.mx.Unlock()
tableMap.mx.Unlock()
}
i--
rrF(tableMap, stmtMap, rrD)
}
tableMap.clear()
stmtMap.clear()
check(tx.Commit())
}
func getZone2RR(filter string, db *sql.DB) iter.Seq[rrDBData] {
return func(yield func(rrDBData) bool) {
tx := check1(db.Begin())
rows := check1(tx.Query(fmt.Sprintf(`
SELECT
zone2rr.id, zone2rr.from_parent, zone2rr.from_self,
rr_type.name, rr_type.id,
rr_name.name, rr_name.id,
rr_value.value, rr_value.id
FROM zone2rr
INNER JOIN rr_type ON zone2rr.rr_type_id=rr_type.id
INNER JOIN rr_name ON zone2rr.rr_name_id=rr_name.id
INNER JOIN rr_value ON zone2rr.rr_value_id=rr_value.id
WHERE zone2rr.parsed=FALSE AND %s
`, filter)))
for rows.Next() {
var ad rrDBData
check(rows.Scan(
&ad.id, &ad.fromParent, &ad.fromSelf,
&ad.rrType.name, &ad.rrType.id,
&ad.rrName.name, &ad.rrName.id,
&ad.rrValue.name, &ad.rrValue.id,
))
if !yield(ad) {
break
}
}
check(rows.Close())
check(tx.Commit())
}
}
func getUnqueriedNsecRes(db *sql.DB) iter.Seq[rrDBData] {
return func(yield func(rrDBData) bool) {
tx := check1(db.Begin())
rows := check1(tx.Query(`
SELECT
zone_walk_res.zone_id, zone_walk_res.id,
rr_name.name, rr_name.id,
rr_type.name, rr_type.id
FROM zone_walk_res
INNER JOIN rr_type ON zone_walk_res.rr_type_id=rr_type.id
INNER JOIN rr_name ON zone_walk_res.rr_name_id=rr_name.id
WHERE zone_walk_res.queried=FALSE
`))
for rows.Next() {
rrD := rrDBData{fromSelf: true}
check(rows.Scan(
&rrD.rrValue.id, &rrD.id,
&rrD.rrName.name, &rrD.rrName.id,
&rrD.rrType.name, &rrD.rrType.id,
))
if !yield(rrD) {
break
}
}
check(rows.Close())
check(tx.Commit())
}
}
func getUnqueriedArpaRoots(db *sql.DB) (iter.Seq[fieldData], bool) {
tx := check1(db.Begin())
rows := check1(tx.Query(`
SELECT id, name
FROM unwalked_root
`))
anyResponses := rows.Next()
return func(yield func(fieldData) bool) {
if anyResponses {
var fd fieldData
check(rows.Scan(&fd.id, &fd.name))
_ = yield(fd)
for rows.Next() {
var fd fieldData
check(rows.Scan(&fd.id, &fd.name))
if !yield(fd) {
break
}
}
}
check(rows.Close())
check(tx.Commit())
}, anyResponses
}
func readerWriterRecurse[inType any](msg string, db *sql.DB, readerF readerRecurseF[inType], writerF writerF[inType]) {
fmt.Println(msg)
seq, anyResponses := readerF(db)
for anyResponses {
writerF(db, seq)
seq, anyResponses = readerF(db)
}
_, stop := iter.Pull(seq)
stop()
}
func extractNSRR(db *sql.DB) {
readerWriter("extracting NS results from RR", db, getZone2RR("rr_type.name='NS'", db), insertNSRR)
}
func extractIPRR(db *sql.DB) {
readerWriter("extracting IP results from RR", db, getZone2RR("(rr_type.name='A' OR rr_type.name='AAAA')", db), insertIPRR)
}
func extractMXRR(db *sql.DB) {
readerWriter("extracting MX results from RR", db, getZone2RR("rr_type.name='MX'", db), insertMXRR)
}
func extractPTRRR(db *sql.DB) {
readerWriter("extracting PTR results from RR", db, getZone2RR("rr_type.name='PTR'", db), insertPTRRR)
}