func (self *KcDb) Iter(fun func(string, Getter) bool) {
cur := C.kcdbcursor(self.cdb)
C.kccurjump(cur)
var kSize, vSize C.size_t
var vBuff, kBuff *C.char
var ret bool
for {
kBuff = C.kccurget(cur, &kSize, &vBuff, &vSize, kcTrue)
if kBuff == nil {
C.kcfree(unsafe.Pointer(kBuff))
break
}
key := string(C.GoBytes(unsafe.Pointer(kBuff), C.int(kSize)))
value := C.GoBytes(unsafe.Pointer(vBuff), C.int(vSize))
r := bytes.NewReader(value)
ret = fun(key, func(e interface{}) error {
return decode(r, e)
})
C.kcfree(unsafe.Pointer(kBuff))
if ret == false {
break
}
}
C.kccurdel(cur)
}
//export GetProof
func GetProof(dispatcher_c unsafe.Pointer, server_ip_c unsafe.Pointer, server_ip_sz C.size_t, hostname_c unsafe.Pointer, hostname_sz_c C.size_t, server_config_c unsafe.Pointer, server_config_sz_c C.size_t, ecdsa_ok_c C.int, out_certs_c ***C.char, out_certs_sz_c *C.int, out_certs_item_sz_c **C.size_t, out_signature_c **C.char, out_signature_sz_c *C.size_t) C.int {
dispatcher := (*QuicDispatcher)(dispatcher_c)
if !dispatcher.isSecure {
return C.int(0)
}
serverIp := net.IP(C.GoBytes(server_ip_c, C.int(server_ip_sz)))
hostname := C.GoBytes(hostname_c, C.int(hostname_sz_c))
serverConfig := C.GoBytes(server_config_c, C.int(server_config_sz_c))
ecdsaOk := int(ecdsa_ok_c) > 0
certs, sig := dispatcher.proofSource.GetProof(serverIp, hostname, serverConfig, ecdsaOk)
certsCStrList := make([](*C.char), 0, 10)
certsCStrSzList := make([](C.size_t), 0, 10)
for _, outCert := range certs {
outCert_c := C.CString(string(outCert)) // Must free this C string in C code
certsCStrList = append(certsCStrList, outCert_c)
certsCStrSzList = append(certsCStrSzList, C.size_t(len(outCert)))
}
*out_certs_c = (**C.char)(unsafe.Pointer(&certsCStrList[0]))
*out_certs_sz_c = C.int(len(certsCStrList))
*out_certs_item_sz_c = (*C.size_t)(unsafe.Pointer(&certsCStrSzList[0]))
*out_signature_c = C.CString(string(sig)) // Must free C string
*out_signature_sz_c = C.size_t(len(sig))
return C.int(1)
}
//export registeredCB
func registeredCB(
ptr unsafe.Pointer,
frameworkMessage *C.ProtobufObj,
masterMessage *C.ProtobufObj) {
if ptr != nil {
var driver *SchedulerDriver = (*SchedulerDriver)(ptr)
if driver.Scheduler.Registered == nil {
return
}
frameworkData := C.GoBytes(
frameworkMessage.data,
C.int(frameworkMessage.size))
var frameworkId FrameworkID
err := proto.Unmarshal(frameworkData, &frameworkId)
if err != nil {
return
}
masterData := C.GoBytes(masterMessage.data, C.int(masterMessage.size))
var masterInfo MasterInfo
err = proto.Unmarshal(masterData, &masterInfo)
if err != nil {
return
}
driver.Scheduler.Registered(driver, frameworkId, masterInfo)
}
}
// Render returns the map as an encoded image.
func (m *Map) Render(opts RenderOpts) ([]byte, error) {
scaleFactor := opts.ScaleFactor
if scaleFactor == 0.0 {
scaleFactor = 1.0
}
i := C.mapnik_map_render_to_image(m.m, C.double(opts.Scale), C.double(scaleFactor))
if i == nil {
return nil, m.lastError()
}
defer C.mapnik_image_free(i)
if opts.Format == "raw" {
size := 0
raw := C.mapnik_image_to_raw(i, (*C.size_t)(unsafe.Pointer(&size)))
return C.GoBytes(unsafe.Pointer(raw), C.int(size)), nil
}
var format *C.char
if opts.Format != "" {
format = C.CString(opts.Format)
} else {
format = C.CString("png256")
}
b := C.mapnik_image_to_blob(i, format)
if b == nil {
return nil, errors.New("mapnik: " + C.GoString(C.mapnik_image_last_error(i)))
}
C.free(unsafe.Pointer(format))
defer C.mapnik_image_blob_free(b)
return C.GoBytes(unsafe.Pointer(b.ptr), C.int(b.len)), nil
}
// GetEventLog returns an array of structures representing the contents of the
// TSS event log
func (tpm *TPM) GetEventLog() ([]Log, error) {
var count C.UINT32
var events *C.TSS_PCR_EVENT
var event C.TSS_PCR_EVENT
err := tspiError(C.Tspi_TPM_GetEventLog(tpm.handle, &count, &events))
if err != nil {
return nil, err
}
if count == 0 {
return nil, nil
}
log := make([]Log, count)
length := count * C.UINT32(unsafe.Sizeof(event))
slice := (*[1 << 30]C.TSS_PCR_EVENT)(unsafe.Pointer(events))[:length:length]
for i := 0; i < int(count); i++ {
log[i].Pcr = int(slice[i].ulPcrIndex)
log[i].Eventtype = int(slice[i].eventType)
log[i].PcrValue = C.GoBytes(unsafe.Pointer(slice[i].rgbPcrValue), C.int(slice[i].ulPcrValueLength))
log[i].Event = C.GoBytes(unsafe.Pointer(slice[i].rgbEvent), C.int(slice[i].ulEventLength))
}
C.Tspi_Context_FreeMemory(tpm.context, (*C.BYTE)(unsafe.Pointer(events)))
return log, nil
}
func (self *LsmDb) Iter(fun func(string, Getter) bool) {
var cur *C.lsm_cursor
rc := C.lsm_csr_open(self.cdb, &cur)
if rc != C.LSM_OK {
return
}
defer C.lsm_csr_close(cur)
var keyP, valP unsafe.Pointer
var keyL, valL C.int
for rc := C.lsm_csr_first(cur); rc == C.LSM_OK && C.lsm_csr_valid(cur) == lsmTrue; rc = C.lsm_csr_next(cur) {
rc = C.lsm_csr_key(cur, &keyP, &keyL)
if rc != C.LSM_OK {
break
}
rc = C.lsm_csr_value(cur, &valP, &valL)
if rc != C.LSM_OK {
break
}
key := string(C.GoBytes(keyP, keyL))
value := C.GoBytes(valP, valL)
r := bytes.NewReader(value)
ret := fun(key, func(obj interface{}) error {
return decode(r, obj)
})
if ret == false {
break
}
}
}
//export consume
func consume(ctx *C.knot_layer_t, pkt *C.knot_pkt_t) C.int {
req := (*C.struct_kr_request)(ctx.data)
qry := req.current_query
state := (C.int)(ctx.state)
if qry.flags&C.QUERY_CACHED != 0 {
return state
}
// Parse answer source address
sa := (*C.struct_sockaddr)(unsafe.Pointer(&qry.ns.addr[0]))
var ip net.IP
if sa.sa_family == C.AF_INET {
sa_v4 := (*C.struct_sockaddr_in)(unsafe.Pointer(sa))
ip = net.IP(C.GoBytes(unsafe.Pointer(&sa_v4.sin_addr), 4))
} else if sa.sa_family == C.AF_INET6 {
sa_v6 := (*C.struct_sockaddr_in6)(unsafe.Pointer(sa))
ip = net.IP(C.GoBytes(unsafe.Pointer(&sa_v6.sin6_addr), 16))
}
// Parse metadata
qname := C.knot_dname_to_str_alloc(C.knot_pkt_qname(pkt))
defer C.free(unsafe.Pointer(qname))
qtype := C.knot_pkt_qtype(pkt)
secure := (bool)(C.knot_pkt_has_dnssec(pkt))
// Sample metric
process_sample(C.GoString(qname), int(qtype), ip, secure)
return state
}
func (cursor *Cursor) Get(set_key []byte, op uint) (key, val []byte, err error) {
var ckey C.MDB_val
var cval C.MDB_val
if set_key != nil && op == SET {
var cset_key *C.MDB_val
cset_key = &C.MDB_val{mv_size: C.size_t(len(set_key)),
mv_data: unsafe.Pointer(&set_key[0])}
ret := C.mdb_cursor_get(cursor._cursor, cset_key, &cval, C.MDB_cursor_op(op))
if ret != SUCCESS {
err = Errno(ret)
key = nil
val = nil
return
}
key = set_key
val = C.GoBytes(cval.mv_data, C.int(cval.mv_size))
}
ret := C.mdb_cursor_get(cursor._cursor, &ckey, &cval, C.MDB_cursor_op(op))
if ret != SUCCESS {
err = Errno(ret)
key = nil
val = nil
return
}
err = nil
key = C.GoBytes(ckey.mv_data, C.int(ckey.mv_size))
val = C.GoBytes(cval.mv_data, C.int(cval.mv_size))
return
}
func loadSystemRoots() (*CertPool, error) {
roots := NewCertPool()
var data C.CFDataRef = nil
var untrustedData C.CFDataRef = nil
err := C.FetchPEMRoots(&data, &untrustedData)
if err == -1 {
// TODO: better error message
return nil, errors.New("crypto/x509: failed to load darwin system roots with cgo")
}
defer C.CFRelease(C.CFTypeRef(data))
buf := C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(data)), C.int(C.CFDataGetLength(data)))
roots.AppendCertsFromPEM(buf)
if untrustedData == nil {
return roots, nil
}
defer C.CFRelease(C.CFTypeRef(untrustedData))
buf = C.GoBytes(unsafe.Pointer(C.CFDataGetBytePtr(untrustedData)), C.int(C.CFDataGetLength(untrustedData)))
untrustedRoots := NewCertPool()
untrustedRoots.AppendCertsFromPEM(buf)
trustedRoots := NewCertPool()
for _, c := range roots.certs {
if !untrustedRoots.contains(c) {
trustedRoots.AddCert(c)
}
}
return trustedRoots, nil
}
// GetTokenInfo obtains information about a particular token
// in the system.
func (c *Ctx) GetTokenInfo(slotID uint) (TokenInfo, error) {
var cti C.CK_TOKEN_INFO
e := C.GetTokenInfo(c.ctx, C.CK_ULONG(slotID), &cti)
s := TokenInfo{
Label: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.label[0]), 32)), " "),
ManufacturerID: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.manufacturerID[0]), 32)), " "),
Model: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.model[0]), 16)), " "),
SerialNumber: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.serialNumber[0]), 16)), " "),
Flags: uint(cti.flags),
MaxSessionCount: uint(cti.ulMaxSessionCount),
SessionCount: uint(cti.ulSessionCount),
MaxRwSessionCount: uint(cti.ulMaxRwSessionCount),
RwSessionCount: uint(cti.ulRwSessionCount),
MaxPinLen: uint(cti.ulMaxPinLen),
MinPinLen: uint(cti.ulMinPinLen),
TotalPublicMemory: uint(cti.ulTotalPublicMemory),
FreePublicMemory: uint(cti.ulFreePublicMemory),
TotalPrivateMemory: uint(cti.ulTotalPrivateMemory),
FreePrivateMemory: uint(cti.ulFreePrivateMemory),
HardwareVersion: toVersion(cti.hardwareVersion),
FirmwareVersion: toVersion(cti.firmwareVersion),
UTCTime: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&cti.utcTime[0]), 16)), " "),
}
return s, toError(e)
}
//export GetProof
func GetProof(proof_source_c unsafe.Pointer, server_ip_c unsafe.Pointer, server_ip_sz C.size_t, hostname_c unsafe.Pointer, hostname_sz_c C.size_t, server_config_c unsafe.Pointer, server_config_sz_c C.size_t, ecdsa_ok_c C.int, out_certs_c ***C.char, out_certs_sz_c *C.int, out_certs_item_sz_c **C.size_t, out_signature_c **C.char, out_signature_sz_c *C.size_t) C.int {
proofSource := (*ProofSource)(proof_source_c)
if !proofSource.impl.IsSecure() {
return C.int(0)
}
serverIp := net.IP(C.GoBytes(server_ip_c, C.int(server_ip_sz)))
hostname := C.GoBytes(hostname_c, C.int(hostname_sz_c))
serverConfig := C.GoBytes(server_config_c, C.int(server_config_sz_c))
ecdsaOk := int(ecdsa_ok_c) > 0
certs, sig := proofSource.impl.GetProof(serverIp, hostname, serverConfig, ecdsaOk)
certsCStrList := make([](*C.char), 0, 10)
certsCStrSzList := make([](C.size_t), 0, 10)
// XXX(hodduc): certsCStrList and certsCStrSzList may be garbage collected before reading in C side, isn't it?
for _, outCert := range certs {
outCert_c := C.CString(string(outCert)) // Must free this C string in C code
certsCStrList = append(certsCStrList, outCert_c)
certsCStrSzList = append(certsCStrSzList, C.size_t(len(outCert)))
}
*out_certs_c = (**C.char)(unsafe.Pointer(&certsCStrList[0]))
*out_certs_sz_c = C.int(len(certsCStrList))
*out_certs_item_sz_c = (*C.size_t)(unsafe.Pointer(&certsCStrSzList[0]))
*out_signature_c = C.CString(string(sig)) // Must free C string
*out_signature_sz_c = C.size_t(len(sig))
return C.int(1)
}
//export executorLostCB
func executorLostCB(
ptr unsafe.Pointer,
executorIdMessage *C.ProtobufObj,
slaveIdMessage *C.ProtobufObj,
status C.int) {
if ptr != nil {
var driver *SchedulerDriver = (*SchedulerDriver)(ptr)
if driver.Scheduler.ExecutorLost == nil {
return
}
executorData := C.GoBytes(executorIdMessage.data, C.int(executorIdMessage.size))
var executorId ExecutorID
err := proto.Unmarshal(executorData, &executorId)
if err != nil {
return
}
slaveData := C.GoBytes(slaveIdMessage.data, C.int(slaveIdMessage.size))
var slaveId SlaveID
err = proto.Unmarshal(slaveData, &slaveId)
if err != nil {
return
}
driver.Scheduler.ExecutorLost(driver, executorId, slaveId, int(status))
}
}
//export frameworkMessageCB
func frameworkMessageCB(
ptr unsafe.Pointer,
executorIdMessage *C.ProtobufObj,
slaveIdMessage *C.ProtobufObj,
dataMessage *C.ProtobufObj) {
if ptr != nil {
var driver *SchedulerDriver = (*SchedulerDriver)(ptr)
if driver.Scheduler.FrameworkMessage == nil {
return
}
executorData := C.GoBytes(executorIdMessage.data, C.int(executorIdMessage.size))
var executorId ExecutorID
err := proto.Unmarshal(executorData, &executorId)
if err != nil {
return
}
slaveData := C.GoBytes(slaveIdMessage.data, C.int(slaveIdMessage.size))
var slaveId SlaveID
err = proto.Unmarshal(slaveData, &slaveId)
if err != nil {
return
}
message := C.GoBytes(dataMessage.data, C.int(dataMessage.size))
var messageString string = string(message)
driver.Scheduler.FrameworkMessage(driver, executorId, slaveId, messageString)
}
}
// Next moves the cursor to the next element and returns the key and value.
// Returns a nil key if there are no more key/value pairs.
func (c *Cursor) Next() (key, value []byte) {
var k, v C.bolt_val
var flags C.uint32_t
C.bolt_cursor_next(c.C, &k, &v, &flags)
if k.data == nil {
return nil, nil
}
return C.GoBytes(k.data, C.int(k.size)), C.GoBytes(v.data, C.int(v.size))
}
// Resolve wraps Unbound's ub_resolve.
func (u *Unbound) Resolve(name string, rrtype, rrclass uint16) (*Result, error) {
res := C.new_ub_result()
r := new(Result)
defer C.ub_resolve_free(res)
i := C.ub_resolve(u.ctx, C.CString(name), C.int(rrtype), C.int(rrclass), &res)
err := newError(int(i))
if err != nil {
return nil, err
}
r.Qname = C.GoString(res.qname)
r.Qtype = uint16(res.qtype)
r.Qclass = uint16(res.qclass)
r.CanonName = C.GoString(res.canonname)
r.Rcode = int(res.rcode)
r.AnswerPacket = new(dns.Msg)
r.AnswerPacket.Unpack(C.GoBytes(res.answer_packet, res.answer_len)) // Should always work
r.HaveData = res.havedata == 1
r.NxDomain = res.nxdomain == 1
r.Secure = res.secure == 1
r.Bogus = res.bogus == 1
r.WhyBogus = C.GoString(res.why_bogus)
// Re-create the RRs
var h dns.RR_Header
h.Name = r.Qname
h.Rrtype = r.Qtype
h.Class = r.Qclass
h.Ttl = 0
r.Data = make([][]byte, 0)
r.Rr = make([]dns.RR, 0)
j := 0
if r.HaveData {
b := C.GoBytes(unsafe.Pointer(C.array_elem_char(res.data, C.int(j))), C.array_elem_int(res.len, C.int(j)))
for len(b) != 0 {
// Create the RR
h.Rdlength = uint16(len(b))
msg := make([]byte, 20+len(h.Name)) // Long enough
off, _ := dns.PackStruct(&h, msg, 0)
msg = msg[:off]
rrbuf := append(msg, b...)
rr, _, err := dns.UnpackRR(rrbuf, 0)
if err == nil {
r.Rr = append(r.Rr, rr)
}
r.Data = append(r.Data, b)
j++
b = C.GoBytes(unsafe.Pointer(C.array_elem_char(res.data, C.int(j))), C.array_elem_int(res.len, C.int(j)))
}
}
return r, err
}
//export merge
// merge is a wrapper around goMerge, returning the result
// as a non-garbage collected C string.
// It is used by C code in this package.
func merge(a, b *C.char, aLen, bLen C.size_t) (*C.char, C.size_t) {
result, err := goMerge(C.GoBytes(unsafe.Pointer(a), C.int(aLen)),
C.GoBytes(unsafe.Pointer(b), C.int(bLen)))
if err != nil {
return nil, 0
}
// As above, the first return value will have to be manually freed
// by the receiver.
return C.CString(string(result)), C.size_t(len(result))
}
func webpSetMetadata(data, metadata []byte, format string) (newData []byte, err error) {
if len(data) == 0 || len(metadata) == 0 {
err = errors.New("webpSetMetadata: bad arguments")
return
}
isCBuf := false
cData := cgoSafePtr(data, isCBuf)
defer cgoFreePtr(cData, isCBuf)
cMetadata := cgoSafePtr(metadata, isCBuf)
defer cgoFreePtr(cMetadata, isCBuf)
switch format {
case "EXIF":
rv := C.cgoWebpSetEXIF(
(*C.uint8_t)(cData), C.size_t(len(data)),
(*C.char)(cMetadata), C.size_t(len(metadata)),
)
if rv.ok != 1 {
err = errors.New("webpSetMetadata: failed")
return
}
newData = C.GoBytes(unsafe.Pointer(rv.ptr), C.int(rv.size))
C.webpFree(unsafe.Pointer(rv.ptr))
return
case "ICCP":
rv := C.cgoWebpSetICCP(
(*C.uint8_t)(cData), C.size_t(len(data)),
(*C.char)(cMetadata), C.size_t(len(metadata)),
)
if rv.ok != 1 {
err = errors.New("webpSetMetadata: failed")
return
}
newData = C.GoBytes(unsafe.Pointer(rv.ptr), C.int(rv.size))
C.webpFree(unsafe.Pointer(rv.ptr))
return
case "XMP":
rv := C.cgoWebpSetXMP(
(*C.uint8_t)(cData), C.size_t(len(data)),
(*C.char)(cMetadata), C.size_t(len(metadata)),
)
if rv.ok != 1 {
err = errors.New("webpSetMetadata: failed")
return
}
newData = C.GoBytes(unsafe.Pointer(rv.ptr), C.int(rv.size))
C.webpFree(unsafe.Pointer(rv.ptr))
return
default:
err = errors.New("webpSetMetadata: unknown format")
return
}
}
/* GetSlotInfo obtains information about a particular slot in the system. */
func (c *Ctx) GetSlotInfo(slotID uint) (SlotInfo, error) {
var csi C.CK_SLOT_INFO
e := C.GetSlotInfo(c.ctx, C.CK_ULONG(slotID), &csi)
s := SlotInfo{
SlotDescription: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&csi.slotDescription[0]), 64)), " "),
ManufacturerID: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&csi.manufacturerID[0]), 32)), " "),
Flags: uint(csi.flags),
HardwareVersion: toVersion(csi.hardwareVersion),
FirmwareVersion: toVersion(csi.firmwareVersion),
}
return s, toError(e)
}
/* GetInfo returns general information about Cryptoki. */
func (c *Ctx) GetInfo() (Info, error) {
var p C.CK_INFO
e := C.GetInfo(c.ctx, C.CK_INFO_PTR(&p))
i := Info{
CryptokiVersion: toVersion(p.cryptokiVersion),
ManufacturerID: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&p.manufacturerID[0]), 32)), " "),
Flags: uint(p.flags),
LibraryDescription: strings.TrimRight(string(C.GoBytes(unsafe.Pointer(&p.libraryDescription[0]), 32)), " "),
LibraryVersion: toVersion(p.libraryVersion),
}
return i, toError(e)
}
// Scan returns up to max key/value objects starting from
// start (inclusive) and ending at end (non-inclusive).
// If max is zero then the number of key/values returned is unbounded.
func (r *RocksDB) Scan(start, end Key, max int64) ([]RawKeyValue, error) {
var keyVals []RawKeyValue
if bytes.Compare(start, end) >= 0 {
return keyVals, nil
}
// In order to prevent content displacement, caching is disabled
// when performing scans. Any options set within the shared read
// options field that should be carried over needs to be set here
// as well.
opts := C.rocksdb_readoptions_create()
C.rocksdb_readoptions_set_fill_cache(opts, 0)
defer C.rocksdb_readoptions_destroy(opts)
it := C.rocksdb_create_iterator(r.rdb, opts)
defer C.rocksdb_iter_destroy(it)
byteCount := len(start)
if byteCount == 0 {
// start=Key("") needs special treatment since we need
// to access start[0] in an explicit seek.
C.rocksdb_iter_seek_to_first(it)
} else {
C.rocksdb_iter_seek(it, bytesPointer(start), C.size_t(byteCount))
}
for i := int64(1); C.rocksdb_iter_valid(it) == 1; C.rocksdb_iter_next(it) {
if max > 0 && i > max {
break
}
var l C.size_t
// The data returned by rocksdb_iter_{key,value} is not meant to be
// freed by the client. It is a direct reference to the data managed
// by the iterator, so it is copied instead of freed.
data := C.rocksdb_iter_key(it, &l)
k := C.GoBytes(unsafe.Pointer(data), C.int(l))
if bytes.Compare(k, end) >= 0 {
break
}
data = C.rocksdb_iter_value(it, &l)
v := C.GoBytes(unsafe.Pointer(data), C.int(l))
keyVals = append(keyVals, RawKeyValue{
Key: k,
Value: v,
})
i++
}
// Check for any errors during iteration.
var cErr *C.char
C.rocksdb_iter_get_error(it, &cErr)
if cErr != nil {
return nil, charToErr(cErr)
}
return keyVals, nil
}
// With an unsafe.Pointer to the block of C memory NewIp6Hdr returns a filled in Ip6Hdr struct.
func NewIp6Hdr(p unsafe.Pointer) (*Ip6Hdr, unsafe.Pointer) {
ip6Hdr := &Ip6Hdr{
cptr: (*C.struct_ip6_hdr)(p),
// The fixed header of an IPv6 packet consists of its first 40 octets.
payload: unsafe.Pointer(uintptr(p) + uintptr(40)),
}
ip6Hdr.SrcAddr = net.IP(C.GoBytes(unsafe.Pointer(&ip6Hdr.cptr.ip6_src), 16))
ip6Hdr.DstAddr = net.IP(C.GoBytes(unsafe.Pointer(&ip6Hdr.cptr.ip6_dst), 16))
u := (*C.struct_ip6_hdrctl)(unsafe.Pointer(&ip6Hdr.cptr.ip6_ctlun))
ip6Hdr.NextHeader = uint8(u.ip6_un1_nxt)
ip6Hdr.PayloadLen = uint16(C.ntohs(u.ip6_un1_plen))
return ip6Hdr, ip6Hdr.payload
}
// Seek moves the cursor to a given key and returns it.
// If the key does not exist then the next key is used. If no keys
// follow, an empty value is returned.
func (c *Cursor) Seek(seek []byte) (key, value []byte, flags int) {
var _flags C.uint32_t
var _seek, k, v C.bolt_val
if len(seek) > 0 {
_seek.size = C.uint32_t(len(seek))
_seek.data = unsafe.Pointer(&seek[0])
}
C.bolt_cursor_seek(c.C, _seek, &k, &v, &_flags)
if k.data == nil {
return nil, nil, 0
}
return C.GoBytes(k.data, C.int(k.size)), C.GoBytes(v.data, C.int(v.size)), int(_flags)
}
func writeToUDP(writer_c unsafe.Pointer, peer_ip unsafe.Pointer, peer_ip_sz C.size_t, peer_port uint16, buffer_c unsafe.Pointer, length_c C.size_t, isServer bool) {
buf := C.GoBytes(buffer_c, C.int(length_c))
if isServer {
peer_addr := &net.UDPAddr{
IP: net.IP(C.GoBytes(peer_ip, C.int(peer_ip_sz))),
Port: int(peer_port),
}
((*ServerWriter)(writer_c)).Ch <- UdpData{Buf: buf, Addr: peer_addr}
} else {
((*ClientWriter)(writer_c)).Ch <- UdpData{Buf: buf}
}
}
func callbackArgBytes(v *C.sqlite3_value) (reflect.Value, error) {
switch C.sqlite3_value_type(v) {
case C.SQLITE_BLOB:
l := C.sqlite3_value_bytes(v)
p := C.sqlite3_value_blob(v)
return reflect.ValueOf(C.GoBytes(p, l)), nil
case C.SQLITE_TEXT:
l := C.sqlite3_value_bytes(v)
c := unsafe.Pointer(C.sqlite3_value_text(v))
return reflect.ValueOf(C.GoBytes(c, l)), nil
default:
return reflect.Value{}, fmt.Errorf("argument must be BLOB or TEXT")
}
}
func generateSubkey(key []byte) (k1 []byte, k2 []byte) {
if len(key) != 16 {
panic("Invalid length.")
}
cK1 := (*C.uchar)(C.malloc(16))
defer C.free(unsafe.Pointer(cK1))
cK2 := (*C.uchar)(C.malloc(16))
defer C.free(unsafe.Pointer(cK2))
C.generate_subkey((*C.uchar)(&key[0]), cK1, cK2)
return C.GoBytes(unsafe.Pointer(cK1), 16), C.GoBytes(unsafe.Pointer(cK2), 16)
}
func NewDnetIOAttr(io *C.struct_dnet_io_attr) DnetIOAttr {
return DnetIOAttr{
Parent: C.GoBytes(unsafe.Pointer(&io.parent[0]), C.int(C.DNET_ID_SIZE)),
ID: C.GoBytes(unsafe.Pointer(&io.id[0]), C.int(C.DNET_ID_SIZE)),
Start: uint64(C.dnet_io_attr_get_start(io)),
Num: uint64(C.dnet_io_attr_get_num(io)),
Timestamp: time.Unix(int64(C.dnet_io_attr_get_tsec(io)), int64(C.dnet_io_attr_get_tnsec(io))),
UserFlags: uint64(C.dnet_io_attr_get_user_flags(io)),
TotalSize: uint64(C.dnet_io_attr_get_total_size(io)),
Flags: uint32(C.dnet_io_attr_get_flags(io)),
Offset: uint64(C.dnet_io_attr_get_offset(io)),
Size: uint64(C.dnet_io_attr_get_size(io)),
RecordFlags: uint64(C.dnet_io_attr_get_record_flags(io)),
}
}
func (db *DB) get(ro *ReadOptions, key []byte) ([]byte, error) {
var errStr *C.char
var vallen C.size_t
var k *C.char
if len(key) != 0 {
k = (*C.char)(unsafe.Pointer(&key[0]))
}
var value *C.char
c := C.leveldb_get_ext(
db.db, ro.Opt, k, C.size_t(len(key)), &value, &vallen, &errStr)
if errStr != nil {
return nil, saveError(errStr)
}
if value == nil {
return nil, nil
}
defer C.leveldb_get_free_ext(unsafe.Pointer(c))
return C.GoBytes(unsafe.Pointer(value), C.int(vallen)), nil
}
// function that lists all the xattrs for an object, since xattrs are
// a k-v pair, this function returns a map of k-v pairs on
// success, error code on failure
func (ioctx *IOContext) ListXattrs(oid string) (map[string][]byte, error) {
c_oid := C.CString(oid)
defer C.free(unsafe.Pointer(c_oid))
var it C.rados_xattrs_iter_t
ret := C.rados_getxattrs(ioctx.ioctx, c_oid, &it)
if ret < 0 {
return nil, GetRadosError(ret)
}
defer func() { C.rados_getxattrs_end(it) }()
m := make(map[string][]byte)
for {
var c_name, c_val *C.char
var c_len C.size_t
defer C.free(unsafe.Pointer(c_name))
defer C.free(unsafe.Pointer(c_val))
ret := C.rados_getxattrs_next(it, &c_name, &c_val, &c_len)
if ret < 0 {
return nil, GetRadosError(ret)
}
// rados api returns a null name,val & 0-length upon
// end of iteration
if c_name == nil {
return m, nil // stop iteration
}
m[C.GoString(c_name)] = C.GoBytes(unsafe.Pointer(c_val), (C.int)(c_len))
}
}
func returnArray() []byte {
var l C.int
var buf *C.char
C.return_array(&buf, &l)
defer C.free(unsafe.Pointer(buf))
return C.GoBytes(unsafe.Pointer(buf), 12)
}
// Encode image.Image with Mapniks image encoder.
func Encode(img image.Image, format string) ([]byte, error) {
var i *C.mapnik_image_t
switch img := img.(type) {
// XXX does mapnik expect NRGBA or RGBA? this might stop working
//as expected if we start encoding images with full alpha channel
case *image.NRGBA:
i = C.mapnik_image_from_raw(
(*C.uint8_t)(unsafe.Pointer(&img.Pix[0])),
C.int(img.Bounds().Dx()),
C.int(img.Bounds().Dy()),
)
case *image.RGBA:
i = C.mapnik_image_from_raw(
(*C.uint8_t)(unsafe.Pointer(&img.Pix[0])),
C.int(img.Bounds().Dx()),
C.int(img.Bounds().Dy()),
)
}
if i == nil {
return nil, errors.New("unable to create image from raw")
}
defer C.mapnik_image_free(i)
cformat := C.CString(format)
b := C.mapnik_image_to_blob(i, cformat)
if b == nil {
return nil, errors.New("mapnik: " + C.GoString(C.mapnik_image_last_error(i)))
}
C.free(unsafe.Pointer(cformat))
defer C.mapnik_image_blob_free(b)
return C.GoBytes(unsafe.Pointer(b.ptr), C.int(b.len)), nil
}
