Merge pull request #21 from D4-project/dependabot/go_modules/golang.org/x/net-0.17.0

build(deps): bump golang.org/x/net from 0.12.0 to 0.17.0

d4-goclient.go

@@ -10,6 +10,7 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
+	"golang.org/x/net/proxy"
 	"io"
 	"io/ioutil"
 	"log"
@@ -18,12 +19,12 @@ import (
 	"os/signal"
 	"strconv"
 	"strings"
+	"syscall"
 	"time"
 
 	config "github.com/D4-project/d4-golang-utils/config"
 	uuid "github.com/D4-project/d4-golang-utils/crypto/hash"
 	"github.com/D4-project/d4-golang-utils/inputreader"
-	_ "github.com/D4-project/d4-golang-utils/inputreader"
 	"github.com/gomodule/redigo/redis"
 )
 
@@ -66,8 +67,11 @@ type (
 		ct             time.Duration
 		ce             bool
 		retry          time.Duration
-		rate          time.Duration
+		rate           time.Duration
 		cc             bool
+		tor            bool
+		daily          bool
+		json           bool
 		ca             x509.CertPool
 		d4error        uint8
 		errnoCopy      uint8
@@ -91,31 +95,35 @@ type (
 		redisPort   string
 		redisQueue  string
 		redisDB     int
+		folderstr   string
 	}
 )
 
 var (
 	// Verbose mode and logging
-	buf    bytes.Buffer
+	buf      bytes.Buffer
-	logger = log.New(&buf, "INFO: ", log.Lshortfile)
+	logger   = log.New(&buf, "INFO: ", log.Lshortfile)
 	debugger = log.New(&buf, "DEBUG: ", log.Lmicroseconds)
-	debugf  = func(debug string) {
+	debugf   = func(debug string) {
 		debugger.Println("", debug)
 	}
 
 	tmpct, _    = time.ParseDuration("5mn")
 	tmpcka, _   = time.ParseDuration("30s")
 	tmpretry, _ = time.ParseDuration("30s")
-	tmprate, _ = time.ParseDuration("200ms")
+	tmprate, _  = time.ParseDuration("200ms")
 
-	confdir = flag.String("c", "", "configuration directory")
+	confdir   = flag.String("c", "", "configuration directory")
-	debug   = flag.Bool("v", false, "Set to True, true, TRUE, 1, or t to enable verbose output on stdout - Don't use in production")
+	debug     = flag.Bool("v", false, "Set to True, true, TRUE, 1, or t to enable verbose output on stdout - Don't use in production")
-	ce      = flag.Bool("ce", true, "Set to True, true, TRUE, 1, or t to enable TLS on network destination")
+	ce        = flag.Bool("ce", true, "Set to True, true, TRUE, 1, or t to enable TLS on network destination")
-	ct      = flag.Duration("ct", tmpct, "Set timeout in human format")
+	ct        = flag.Duration("ct", tmpct, "Set timeout in human format")
-	cka     = flag.Duration("cka", tmpcka, "Keep Alive time human format, 0 to disable")
+	cka       = flag.Duration("cka", tmpcka, "Keep Alive time human format, 0 to disable")
-	retry   = flag.Duration("rt", tmpretry, "Time in human format before retry after connection failure, set to 0 to exit on failure")
+	retry     = flag.Duration("rt", tmpretry, "Time in human format before retry after connection failure, set to 0 to exit on failure")
-	rate   = flag.Duration("rl", tmprate, "Rate limiter: time in human format before retry after EOF")
+	rate      = flag.Duration("rl", tmprate, "Rate limiter: time in human format before retry after EOF")
-	cc      = flag.Bool("cc", false, "Check TLS certificate against rootCA.crt")
+	cc        = flag.Bool("cc", false, "Check TLS certificate against rootCA.crt")
+	torflag   = flag.Bool("tor", false, "Use a SOCKS5 tor proxy on 9050")
+	dailyflag = flag.Bool("daily", false, "Sets up filewatcher to watch a new %Y%M%D folder at midnight")
+	jsonflag  = flag.Bool("json", false, "The files watched are json files")
 )
 
 func main() {
@@ -130,6 +138,7 @@ func main() {
 	}
 	defer f.Close()
 	logger.SetOutput(f)
+	logger.SetFlags(log.LstdFlags | log.Lshortfile)
 	logger.Println("Init")
 
 	flag.Usage = func() {
@@ -165,56 +174,135 @@ func main() {
 		*confdir = strings.TrimSuffix(*confdir, "/")
 		*confdir = strings.TrimSuffix(*confdir, "\\")
 	}
+
 	d4.confdir = *confdir
 	d4.ce = *ce
 	d4.ct = *ct
 	d4.cc = *cc
+	d4.json = *jsonflag
 	d4.cka = *cka
 	d4.retry = *retry
 	d4.rate = *rate
+	d4.tor = *torflag
+	d4.daily = *dailyflag
 
 	s := make(chan os.Signal, 1)
 	signal.Notify(s, os.Interrupt, os.Kill)
-	c := make(chan string)
+	errchan := make(chan error)
+	eofchan := make(chan string)
+	metachan := make(chan string)
 
-	// Launching the Rate limiter
+	// Launching the Rate limiters
-    ratelimiter := time.Tick(d4.rate)
+	rateLimiter := time.Tick(d4.rate)
+	retryLimiter := time.Tick(d4.retry)
 
-	d4.mhb = bytes.NewBuffer(d4.mh)
+	//Setup
+	if !d4loadConfig(d4p) {
+		panic("Could not load Config.")
+	}
+	if !setReaderWriters(d4p, false) {
+		panic("Could not Init Inputs Outputs.")
+	}
+	if !d4.dst.initHeader(d4p) {
+		panic("Could not Init Headers.")
+	}
 
-	for {
+	// force is a flag that forces the creation of a new connection
-		// init or reinit after retry
+	force := false
-		if set(d4p) {
+
-			// type 254 requires to send a meta-header first
+	// On the first run, we send d4 meta header for type 2/254
-			if d4.conf.ttype == 254 || d4.conf.ttype == 2 {
+	if d4.conf.ttype == 254 || d4.conf.ttype == 2 {
-				// create a jsonreader
+		go sendMeta(d4p, errchan, metachan)
-				d4p.dst.hijackHeader()
+	H:
-				// Ugly hack to skip bytes.Buffer WriteTo check that bypasses my fixed lenght buffer
+		for {
-				nread, err := io.CopyBuffer(&d4.dst, struct{ io.Reader }{d4.mhb}, d4.dst.pb)
+			select {
-				if err != nil {
+			case <-errchan:
-					panic(fmt.Sprintf("Cannot initiate session %s", err))
+				select {
+				case <-retryLimiter:
+					go sendMeta(d4p, errchan, metachan)
+				case <-s:
+					logger.Println("Exiting")
+					exit(d4p, 0)
 				}
-				logger.Println(fmt.Sprintf("Meta-Header sent: %d bytes", nread))
+			case <-metachan:
-				d4p.dst.restoreHeader()
+				break H
 			}
-			// copy routine
-			go d4Copy(d4p, c)
-			// Block until the rate limiter allow us to continue
-			<-ratelimiter
-		} else if d4.retry > 0 {
-			go func() {
-				logger.Println(fmt.Sprintf("Sleeping for %.f seconds before retry...", d4.retry.Seconds()))
-				time.Sleep(d4.retry)
-				c <- "done waiting"
-			}()
-		} else {
-			exit(d4p, 1)
 		}
+	}
 
-		// Block until we catch an event
+	// Launch copy routine
+	go d4Copy(d4p, errchan, eofchan)
+
+	// Handle signals
+	for {
 		select {
-		case <-c:
+		// Case where the input ran out of data to consume1
-			continue
+		case <-eofchan:
+			// We wait for ratelimiter before polling again
+		EOF:
+			for {
+				select {
+				case <-rateLimiter:
+					// copy routine
+					go d4Copy(d4p, errchan, eofchan)
+					break EOF
+					// Exit signal
+				case <-s:
+					logger.Println("Exiting")
+					exit(d4p, 0)
+				}
+			}
+		// ERROR, we check first whether it is network related
+		case err := <-errchan:
+			// On connection errors, we force setReaderWriter to reset the connection
+			force = false
+			switch t := err.(type) {
+			case *net.OpError:
+				force = true
+				if t.Op == "dial" {
+					logger.Println("Unknown Host")
+				} else if t.Op == "read" {
+					logger.Println("Connection Refused")
+				} else if t.Op == "write" {
+					logger.Println("Write error")
+				}
+			case syscall.Errno:
+				if t == syscall.ECONNREFUSED {
+					force = true
+					logger.Println("Connection Refused")
+				}
+			}
+			// We wait for retryLimiter before writing again
+		RETRY:
+			for {
+				select {
+				case <-retryLimiter:
+					if !setReaderWriters(d4p, force) {
+						// Can't connect, we break to retry
+						// force is still true
+						break
+					}
+					if !d4.dst.initHeader(d4p) {
+						panic("Could not Init Headers.")
+					}
+					if (d4.conf.ttype == 254 || d4.conf.ttype == 2) && force {
+						// setReaderWriter is happy, we should have a working
+						// connection from now on.
+						force = false
+						// Sending meta header for the first time on this new connection
+						go sendMeta(d4p, errchan, metachan)
+					}
+					break RETRY
+					// Exit signal
+				case <-s:
+					logger.Println("Exiting")
+					exit(d4p, 0)
+				}
+			}
+		// metaheader sent, launch the copy routine
+		case <-metachan:
+			go d4Copy(d4p, errchan, eofchan)
+		// Exit signal
 		case <-s:
 			logger.Println("Exiting")
 			exit(d4p, 0)
@@ -231,25 +319,31 @@ func exit(d4 *d4S, exitcode int) {
 	os.Exit(exitcode)
 }
 
-func set(d4 *d4S) bool {
+func d4Copy(d4 *d4S, errchan chan error, eofchan chan string) {
-	if d4loadConfig(d4) {
-		if setReaderWriters(d4) {
-			if d4.dst.initHeader(d4) {
-				return true
-			}
-		}
-	}
-	return false
-}
-
-func d4Copy(d4 *d4S, c chan string) {
 	nread, err := io.CopyBuffer(&d4.dst, d4.src, d4.dst.pb)
 	// Always retry
 	if err != nil {
-		c <- fmt.Sprintf("D4copy: %s", err)
+		logger.Printf("D4copy: %s", err)
+		errchan <- err
 		return
 	}
-	c <- fmt.Sprintf("EOF: Nread: %d", nread)
+	eofchan <- fmt.Sprintf("EOF: Nread: %d", nread)
+}
+
+func sendMeta(d4 *d4S, errchan chan error, metachan chan string) {
+	// Fill metaheader buffer with metaheader data
+	d4.mhb = bytes.NewBuffer(d4.mh)
+	d4.dst.hijackHeader()
+	// Ugly hack to skip bytes.Buffer WriteTo check that bypasses my fixed lenght buffer
+	nread, err := io.CopyBuffer(&d4.dst, struct{ io.Reader }{d4.mhb}, d4.dst.pb)
+	if err != nil {
+		logger.Printf("Cannot sent meta-header: %s", err)
+		errchan <- err
+		return
+	}
+	logger.Println(fmt.Sprintf("Meta-Header sent: %d bytes", nread))
+	d4.dst.restoreHeader()
+	metachan <- "Header Sent"
 	return
 }
 
@@ -264,9 +358,20 @@ func d4loadConfig(d4 *d4S) bool {
 	if len((*d4).conf.source) < 1 {
 		log.Fatal("Unsupported source")
 	}
+	if (*d4).conf.source == "folder" {
+		fstr := string(readConfFile(d4, "folder"))
+		if ffd, err := os.Stat(fstr); os.IsNotExist(err) {
+			log.Fatal("Folder does not exist")
+		} else {
+			if !ffd.IsDir() {
+				log.Fatal("Folder is not a directory")
+			}
+		}
+		(*d4).conf.folderstr = fstr
+	}
 	if (*d4).conf.source == "d4server" {
 		// Parse Input Redis Config
-		tmp := config.ReadConfigFile(*confdir, "redis_d4")
+		tmp := string(readConfFile(d4, "redis_d4"))
 		ss := strings.Split(string(tmp), "/")
 		if len(ss) <= 1 {
 			log.Fatal("Missing Database in Redis input config: should be host:port/database_name")
@@ -340,9 +445,13 @@ func d4loadConfig(d4 *d4S) bool {
 						if off, err := file.Seek(0, 0); err != nil || off != 0 {
 							panic(fmt.Sprintf("Cannot read Meta-Header file: %s", err))
 						} else {
+							// create metaheader buffer
+							d4.mhb = bytes.NewBuffer(d4.mh)
 							if err := json.Compact((*d4).mhb, data[:count]); err != nil {
 								logger.Println("Failed to compact meta header file")
 							}
+							// Store the metaheader in d4 struct for subsequent retries
+							(*d4).mh = data[:count]
 						}
 					} else {
 						panic("A Meta-Header File should at least contain a 'type' field.")
@@ -389,7 +498,7 @@ func newD4Writer(writer io.Writer, key []byte) d4Writer {
 }
 
 // TODO QUICK IMPLEM, REVISE
-func setReaderWriters(d4 *d4S) bool {
+func setReaderWriters(d4 *d4S, force bool) bool {
 	//TODO implement other destination file, fifo unix_socket ...
 	switch (*d4).conf.source {
 	case "stdin":
@@ -406,42 +515,85 @@ func setReaderWriters(d4 *d4S) bool {
 			logger.Println("Could not connect to d4 Redis")
 			return false
 		}
-		(*d4).src, err = inputreader.NewLPOPReader(&(*d4).redisCon, (*d4).conf.redisDB, (*d4).conf.redisQueue, int(time.Second*(*d4).retry))
+		(*d4).src, err = inputreader.NewLPOPReader(&(*d4).redisCon, (*d4).conf.redisDB, (*d4).conf.redisQueue)
 		if err != nil {
 			log.Printf("Could not create d4 Redis Descriptor %q \n", err)
 			return false
 		}
+	case "folder":
+		var err error
+		(*d4).src, err = inputreader.NewFileWatcherReader((*d4).conf.folderstr, (*d4).json, (*d4).daily, logger)
+		if err != nil {
+			log.Printf("Could not create File Watcher %q \n", err)
+			return false
+		}
 	}
 	isn, dstnet := config.IsNet((*d4).conf.destination)
 	if isn {
-		dial := net.Dialer{
+		// We test whether a connection already exist
-			Timeout:       (*d4).ct,
+		// (case where the reader run out of data)
-			KeepAlive:     (*d4).cka,
+		// force forces to reset the connections after
-			FallbackDelay: 0,
+		// failure to reuse it
-		}
+		if _, ok := (*d4).dst.w.(net.Conn); !ok || force {
-		tlsc := tls.Config{
+			if (*d4).tor {
-			InsecureSkipVerify: true,
+				dialer := net.Dialer{
-		}
+					Timeout:       (*d4).ct,
-		if (*d4).cc {
+					KeepAlive:     (*d4).cka,
-			tlsc = tls.Config{
+					FallbackDelay: 0,
-				InsecureSkipVerify: false,
+				}
-				RootCAs:            &(*d4).ca,
+				dial, err := proxy.SOCKS5("tcp", "127.0.0.1:9050", nil, &dialer)
+				if err != nil {
+					log.Fatal(err)
+				}
+				tlsc := tls.Config{
+					InsecureSkipVerify: true,
+				}
+				if (*d4).cc {
+					tlsc = tls.Config{
+						InsecureSkipVerify: false,
+						RootCAs:            &(*d4).ca,
+					}
+				}
+				conn, errc := dial.Dial("tcp", dstnet)
+				if errc != nil {
+					logger.Println(errc)
+					return false
+				}
+				if (*d4).ce == true {
+					conn = tls.Client(conn, &tlsc) // use tls
+				}
+				(*d4).dst = newD4Writer(conn, (*d4).conf.key)
+			} else {
+				dial := net.Dialer{
+					Timeout:       (*d4).ct,
+					KeepAlive:     (*d4).cka,
+					FallbackDelay: 0,
+				}
+				tlsc := tls.Config{
+					InsecureSkipVerify: true,
+				}
+				if (*d4).cc {
+					tlsc = tls.Config{
+						InsecureSkipVerify: false,
+						RootCAs:            &(*d4).ca,
+					}
+				}
+				if (*d4).ce == true {
+					conn, errc := tls.DialWithDialer(&dial, "tcp", dstnet, &tlsc)
+					if errc != nil {
+						logger.Println(errc)
+						return false
+					}
+					(*d4).dst = newD4Writer(conn, (*d4).conf.key)
+				} else {
+					conn, errc := dial.Dial("tcp", dstnet)
+					if errc != nil {
+						return false
+					}
+					(*d4).dst = newD4Writer(conn, (*d4).conf.key)
+				}
 			}
 		}
-		if (*d4).ce == true {
-			conn, errc := tls.DialWithDialer(&dial, "tcp", dstnet, &tlsc)
-			if errc != nil {
-				logger.Println(errc)
-				return false
-			}
-			(*d4).dst = newD4Writer(conn, (*d4).conf.key)
-		} else {
-			conn, errc := dial.Dial("tcp", dstnet)
-			if errc != nil {
-				return false
-			}
-			(*d4).dst = newD4Writer(conn, (*d4).conf.key)
-		}
 	} else {
 		switch (*d4).conf.destination {
 		case "stdout":
@@ -466,7 +618,7 @@ func generateUUIDv4() []byte {
 	if err != nil {
 		log.Fatal(err)
 	}
-	logger.Println(fmt.Sprintf("UUIDv4: %s\n", uuid))
+	logger.Println(fmt.Sprintf("UUIDv4: %s", uuid))
 	return uuid.Bytes()
 }
 

go.mod

@@ -3,6 +3,9 @@ module github.com/D4-project/d4-goclient
 go 1.13
 
 require (
-	github.com/D4-project/d4-golang-utils v0.1.3
+	github.com/D4-project/d4-golang-utils v0.1.14
+	github.com/gofrs/uuid v4.4.0+incompatible // indirect
 	github.com/gomodule/redigo v2.0.0+incompatible
+	github.com/rjeczalik/notify v0.9.3 // indirect
+	golang.org/x/net v0.17.0
 )

go.sum

@@ -1,6 +1,63 @@
-github.com/D4-project/d4-golang-utils v0.1.3 h1:JrGoQ3Va4SwGl8Pjnb2bK/wxdFaGsjulAmp0bxZO7jg=
+github.com/D4-project/d4-golang-utils v0.1.14 h1:APwN+i4qyDrxT8gvlbeV/VXfNas2GvPWOnkTGX1K2Lo=
-github.com/D4-project/d4-golang-utils v0.1.3/go.mod h1:GGR5KMhvABZtIfmS5jZkwQnBoP+9/V0ZEETSGiWLaM4=
+github.com/D4-project/d4-golang-utils v0.1.14/go.mod h1:qXVZ3kCL72i3uYe29t7aEy9dU0bNqtFvcoNE1dJu0zo=
-github.com/gofrs/uuid v3.2.0+incompatible h1:y12jRkkFxsd7GpqdSZ+/KCs/fJbqpEXSGd4+jfEaewE=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gofrs/uuid v3.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
+github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1YrTJupqA=
+github.com/gofrs/uuid v4.4.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gomodule/redigo v2.0.0+incompatible h1:K/R+8tc58AaqLkqG2Ol3Qk+DR/TlNuhuh457pBFPtt0=
 github.com/gomodule/redigo v2.0.0+incompatible/go.mod h1:B4C85qUVwatsJoIUNIfCRsp7qO0iAmpGFZ4EELWSbC4=
+github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/redislabs/redisgraph-go v2.0.2+incompatible/go.mod h1:GYn4oUFkbkHx49xm2H4G8jZziqKDKdRtDUuTBZTmqBE=
+github.com/rjeczalik/notify v0.9.2/go.mod h1:aErll2f0sUX9PXZnVNyeiObbmTlk5jnMoCa4QEjJeqM=
+github.com/rjeczalik/notify v0.9.3 h1:6rJAzHTGKXGj76sbRgDiDcYj/HniypXmSJo1SWakZeY=
+github.com/rjeczalik/notify v0.9.3/go.mod h1:gF3zSOrafR9DQEWSE8TjfI9NkooDxbyT4UgRGKZA0lc=
+github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
+github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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