mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-05-03 10:00:03 +02:00
301 lines
7.9 KiB
Go
301 lines
7.9 KiB
Go
package needle
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"strconv"
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"strings"
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"time"
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"github.com/valyala/fasthttp"
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"github.com/chrislusf/seaweedfs/weed/images"
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. "github.com/chrislusf/seaweedfs/weed/storage/types"
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)
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const (
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NeedleChecksumSize = 4
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PairNamePrefix = "Seaweed-"
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)
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var (
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PairNamePrefixBytes = []byte("Seaweed-")
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)
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/*
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* A Needle means a uploaded and stored file.
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* Needle file size is limited to 4GB for now.
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*/
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type Needle struct {
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Cookie Cookie `comment:"random number to mitigate brute force lookups"`
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Id NeedleId `comment:"needle id"`
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Size uint32 `comment:"sum of DataSize,Data,NameSize,Name,MimeSize,Mime"`
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DataSize uint32 `comment:"Data size"` //version2
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Data []byte `comment:"The actual file data"`
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Flags byte `comment:"boolean flags"` //version2
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NameSize uint8 //version2
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Name []byte `comment:"maximum 256 characters"` //version2
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MimeSize uint8 //version2
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Mime []byte `comment:"maximum 256 characters"` //version2
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PairsSize uint16 //version2
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Pairs []byte `comment:"additional name value pairs, json format, maximum 64kB"`
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LastModified uint64 //only store LastModifiedBytesLength bytes, which is 5 bytes to disk
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Ttl *TTL
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Checksum CRC `comment:"CRC32 to check integrity"`
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AppendAtNs uint64 `comment:"append timestamp in nano seconds"` //version3
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Padding []byte `comment:"Aligned to 8 bytes"`
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}
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func (n *Needle) String() (str string) {
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str = fmt.Sprintf("%s Size:%d, DataSize:%d, Name:%s, Mime:%s", formatNeedleIdCookie(n.Id, n.Cookie), n.Size, n.DataSize, n.Name, n.Mime)
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return
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}
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func OldParseUpload(r *http.Request, sizeLimit int64) (
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fileName string, data []byte, mimeType string, pairMap map[string]string, isGzipped bool, originalDataSize int,
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modifiedTime uint64, ttl *TTL, isChunkedFile bool, e error) {
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pairMap = make(map[string]string)
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for k, v := range r.Header {
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if len(v) > 0 && strings.HasPrefix(k, PairNamePrefix) {
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pairMap[k] = v[0]
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}
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}
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if r.Method == "POST" {
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fileName, data, mimeType, isGzipped, originalDataSize, isChunkedFile, e = parseMultipart(r, sizeLimit)
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} else {
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isGzipped = false
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mimeType = r.Header.Get("Content-Type")
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fileName = ""
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data, e = ioutil.ReadAll(io.LimitReader(r.Body, sizeLimit+1))
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originalDataSize = len(data)
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if e == io.EOF || int64(originalDataSize) == sizeLimit+1 {
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io.Copy(ioutil.Discard, r.Body)
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}
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r.Body.Close()
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}
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if e != nil {
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return
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}
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modifiedTime, _ = strconv.ParseUint(r.FormValue("ts"), 10, 64)
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ttl, _ = ReadTTL(r.FormValue("ttl"))
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return
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}
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func ParseUpload(ctx *fasthttp.RequestCtx, sizeLimit int64) (
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fileName string, data []byte, mimeType string, pairMap map[string]string, isGzipped bool, originalDataSize int,
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modifiedTime uint64, ttl *TTL, isChunkedFile bool, e error) {
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pairMap = make(map[string]string)
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ctx.Request.Header.VisitAll(func(k, v []byte) {
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if len(v) > 0 && bytes.HasPrefix(k, PairNamePrefixBytes) {
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pairMap[string(k)] = string(v)
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}
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})
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if ctx.IsPost() {
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fileName, data, mimeType, isGzipped, originalDataSize, isChunkedFile, e = parseMultipart(r, sizeLimit)
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} else {
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isGzipped = false
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mimeType = string(ctx.Request.Header.Peek("Content-Type"))
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fileName = ""
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data, e = ioutil.ReadAll(io.LimitReader(ctx.PostBody(), sizeLimit+1))
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originalDataSize = len(data)
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if e == io.EOF || int64(originalDataSize) == sizeLimit+1 {
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io.Copy(ioutil.Discard, r.Body)
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}
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r.Body.Close()
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}
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if e != nil {
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return
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}
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modifiedTime, _ = strconv.ParseUint(r.FormValue("ts"), 10, 64)
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ttl, _ = ReadTTL(r.FormValue("ttl"))
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return
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}
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func OldCreateNeedleFromRequest(r *http.Request, fixJpgOrientation bool, sizeLimit int64) (n *Needle, originalSize int, e error) {
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var pairMap map[string]string
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fname, mimeType, isGzipped, isChunkedFile := "", "", false, false
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n = new(Needle)
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fname, n.Data, mimeType, pairMap, isGzipped, originalSize, n.LastModified, n.Ttl, isChunkedFile, e = OldParseUpload(r, sizeLimit)
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if e != nil {
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return
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}
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if len(fname) < 256 {
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n.Name = []byte(fname)
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n.SetHasName()
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}
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if len(mimeType) < 256 {
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n.Mime = []byte(mimeType)
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n.SetHasMime()
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}
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if len(pairMap) != 0 {
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trimmedPairMap := make(map[string]string)
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for k, v := range pairMap {
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trimmedPairMap[k[len(PairNamePrefix):]] = v
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}
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pairs, _ := json.Marshal(trimmedPairMap)
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if len(pairs) < 65536 {
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n.Pairs = pairs
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n.PairsSize = uint16(len(pairs))
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n.SetHasPairs()
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}
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}
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if isGzipped {
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n.SetGzipped()
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}
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if n.LastModified == 0 {
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n.LastModified = uint64(time.Now().Unix())
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}
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n.SetHasLastModifiedDate()
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if n.Ttl != EMPTY_TTL {
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n.SetHasTtl()
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}
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if isChunkedFile {
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n.SetIsChunkManifest()
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}
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if fixJpgOrientation {
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loweredName := strings.ToLower(fname)
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if mimeType == "image/jpeg" || strings.HasSuffix(loweredName, ".jpg") || strings.HasSuffix(loweredName, ".jpeg") {
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n.Data = images.FixJpgOrientation(n.Data)
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}
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}
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n.Checksum = NewCRC(n.Data)
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commaSep := strings.LastIndex(r.URL.Path, ",")
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dotSep := strings.LastIndex(r.URL.Path, ".")
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fid := r.URL.Path[commaSep+1:]
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if dotSep > 0 {
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fid = r.URL.Path[commaSep+1 : dotSep]
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}
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e = n.ParsePath(fid)
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return
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}
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func CreateNeedleFromRequest(ctx *fasthttp.RequestCtx, fixJpgOrientation bool, sizeLimit int64) (n *Needle, originalSize int, e error) {
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var pairMap map[string]string
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fname, mimeType, isGzipped, isChunkedFile := "", "", false, false
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n = new(Needle)
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fname, n.Data, mimeType, pairMap, isGzipped, originalSize, n.LastModified, n.Ttl, isChunkedFile, e = OldParseUpload(r, sizeLimit)
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if e != nil {
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return
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}
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if len(fname) < 256 {
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n.Name = []byte(fname)
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n.SetHasName()
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}
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if len(mimeType) < 256 {
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n.Mime = []byte(mimeType)
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n.SetHasMime()
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}
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if len(pairMap) != 0 {
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trimmedPairMap := make(map[string]string)
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for k, v := range pairMap {
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trimmedPairMap[k[len(PairNamePrefix):]] = v
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}
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pairs, _ := json.Marshal(trimmedPairMap)
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if len(pairs) < 65536 {
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n.Pairs = pairs
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n.PairsSize = uint16(len(pairs))
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n.SetHasPairs()
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}
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}
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if isGzipped {
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n.SetGzipped()
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}
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if n.LastModified == 0 {
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n.LastModified = uint64(time.Now().Unix())
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}
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n.SetHasLastModifiedDate()
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if n.Ttl != EMPTY_TTL {
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n.SetHasTtl()
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}
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if isChunkedFile {
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n.SetIsChunkManifest()
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}
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if fixJpgOrientation {
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loweredName := strings.ToLower(fname)
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if mimeType == "image/jpeg" || strings.HasSuffix(loweredName, ".jpg") || strings.HasSuffix(loweredName, ".jpeg") {
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n.Data = images.FixJpgOrientation(n.Data)
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}
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}
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n.Checksum = NewCRC(n.Data)
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commaSep := strings.LastIndex(r.URL.Path, ",")
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dotSep := strings.LastIndex(r.URL.Path, ".")
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fid := r.URL.Path[commaSep+1:]
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if dotSep > 0 {
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fid = r.URL.Path[commaSep+1 : dotSep]
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}
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e = n.ParsePath(fid)
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return
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}
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func (n *Needle) ParsePath(fid string) (err error) {
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length := len(fid)
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if length <= CookieSize*2 {
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return fmt.Errorf("Invalid fid: %s", fid)
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}
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delta := ""
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deltaIndex := strings.LastIndex(fid, "_")
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if deltaIndex > 0 {
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fid, delta = fid[0:deltaIndex], fid[deltaIndex+1:]
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}
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n.Id, n.Cookie, err = ParseNeedleIdCookie(fid)
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if err != nil {
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return err
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}
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if delta != "" {
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if d, e := strconv.ParseUint(delta, 10, 64); e == nil {
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n.Id += Uint64ToNeedleId(d)
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} else {
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return e
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}
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}
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return err
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}
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func ParseNeedleIdCookie(key_hash_string string) (NeedleId, Cookie, error) {
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if len(key_hash_string) <= CookieSize*2 {
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return NeedleIdEmpty, 0, fmt.Errorf("KeyHash is too short.")
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}
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if len(key_hash_string) > (NeedleIdSize+CookieSize)*2 {
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return NeedleIdEmpty, 0, fmt.Errorf("KeyHash is too long.")
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}
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split := len(key_hash_string) - CookieSize*2
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needleId, err := ParseNeedleId(key_hash_string[:split])
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if err != nil {
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return NeedleIdEmpty, 0, fmt.Errorf("Parse needleId error: %v", err)
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}
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cookie, err := ParseCookie(key_hash_string[split:])
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if err != nil {
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return NeedleIdEmpty, 0, fmt.Errorf("Parse cookie error: %v", err)
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}
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return needleId, cookie, nil
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}
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func (n *Needle) LastModifiedString() string {
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return time.Unix(int64(n.LastModified), 0).Format("2006-01-02T15:04:05")
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}
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