latest

.dockerignore

@@ -1,5 +1,4 @@
 *.tzst
-*.tar
 /buildimage
 /dockerdeps
 /tmp

.gitignore

@@ -1,8 +1,8 @@
 mfer/*.pb.go
 /mfer.cmd
-vendor
 /tmp
 *.tmp
 *.docker.tzst
 *.tzst
 /builddeps/modcache.tar
+/vendor

Dockerfile

@@ -1,35 +1,11 @@
 ################################################################################
 #2345678911234567892123456789312345678941234567895123456789612345678971234567898
 ################################################################################
-FROM golang:1.19.3-bullseye AS builder
-ENV GOPATH /go
+FROM sneak/builder:14e59af AS builder
 ENV DEBIAN_FRONTEND noninteractive
-RUN --mount=type=cache,target=/var/cache/apt \
-    apt update && \
-    apt install -y make zstd unzip && \
-    mkdir /build
-WORKDIR /tmp
-# install newer protoc
-COPY ./builddeps/* ./
-RUN unzip protoc-*-linux-$(uname -m).zip -d /usr/local && \
-    protoc --version && \
-    mkdir -p /go/pkg/mod && \
-    cd /go/pkg/mod && \
-    tar xvf /tmp/modcache.tar && \
-    cd / && \
-    go install -v google.golang.org/protobuf/cmd/protoc-gen-go@v1.28.1 && \
-    go install -v mvdan.cc/gofumpt@latest && \
-    go install -v github.com/golangci/golangci-lint/cmd/golangci-lint@v1.50.1 && \
-    rm -rf /tmp/*
-WORKDIR /build
-COPY ./go.mod ./go.sum .
-RUN \
-    go mod download -x
-################################################################################
-#### caching phase done
-################################################################################
 WORKDIR /build
 COPY ./Makefile ./.golangci.yml ./go.mod ./go.sum .
+COPY ./vendor.tar /build/vendor.tar
 COPY ./internal ./internal
 COPY ./bin/gitrev.sh ./bin/gitrev.sh
 COPY ./mfer ./mfer
@@ -39,6 +15,7 @@ ARG GITREV unknown
 RUN \
     cd mfer && go generate . && cd .. && \
     GOPACKAGESDEBUG=true golangci-lint run ./... && \
+    tar xf vendor.tar && rm vendor.tar && \
     make mfer.cmd
 RUN go mod vendor && tar -c . | zstdmt -19 > /src.tzst
 ################################################################################

Makefile

@@ -58,8 +58,7 @@ lint:
 
 docker: sneak-mfer.$(ARCH).docker.tzst
 
-sneak-mfer.$(ARCH).docker.tzst: $(SOURCEFILES)
-	bash -x bin/docker-prereqs.sh
+sneak-mfer.$(ARCH).docker.tzst: $(SOURCEFILES) vendor.tar
 	docker build --progress plain --build-arg GITREV=$(GITREV_BUILD) -t sneak/mfer .
 	docker save sneak/mfer | pv | zstdmt -19 > $@
 	du -sh $@
@@ -67,3 +66,8 @@ sneak-mfer.$(ARCH).docker.tzst: $(SOURCEFILES)
 godoc:
 	open http://127.0.0.1:6060
 	godoc -http=:6060
+
+vendor.tar: go.mod go.sum
+	go mod vendor
+	tar -c vendor > $@
+	rm -rf vendor

bin/docker-prereqs.sh

@@ -1,47 +0,0 @@
-#!/bin/bash
-set -euxo pipefail
-GOI="golang:1.19.3-bullseye"
-#CII="golangci/golangci-lint:v1.50.1"
-
-if [[ ! -d "$DOCKER_IMAGE_CACHE_DIR" ]]; then
-    mkdir -p "$DOCKER_IMAGE_CACHE_DIR"
-fi
-
-DICD="$DOCKER_IMAGE_CACHE_DIR"
-
-function buildImageCache() {
-    if [[ ! -e "$DICD/go.tzst" ]]; then
-        docker pull $GOI
-        docker save $GOI | pv | zstdmt -19 > $DICD/go.tzst.tmp && \
-            mv $DICD/go.tzst.tmp $DICD/go.tzst
-    fi
-
-    #if [[ ! -e "$DICD/ci.tzst" ]]; then
-    #    docker pull $CII
-    #    docker save $CII | pv | zstdmt -19 > $DICD/ci.tzst.tmp && \
-    #        mv $DICD/ci.tzst.tmp $DICD/ci.tzst
-    #fi
-}
-
-function loadImageCache() {
-   # zstdmt -d --stdout $DICD/ci.tzst | pv | docker load
-    zstdmt -d --stdout $DICD/go.tzst | pv | docker load
-
-    #docker image ls $CII
-    docker image ls $GOI
-
-}
-
-function writeModuleCache() {
-    if [[ ! -e $DICD/modcache.tar ]]; then
-        cd $(go env GOMODCACHE)
-        tar -c . | pv > $DICD/modcache.tar.tmp && mv $DICD/modcache.tar.tmp $DICD/modcache.tar
-        cd -
-    fi
-    cp -av $DICD/modcache.tar ./builddeps/modcache.tar.tmp && mv ./builddeps/modcache.tar.tmp ./builddeps/modcache.tar
-}
-
-buildImageCache
-loadImageCache
-writeModuleCache
-

buildimage/Dockerfile

@@ -1,21 +0,0 @@
-## build image:
-FROM golang:1.19.3-bullseye AS builder
-
-ENV DEBIAN_FRONTEND noninteractive
-RUN apt update && apt install -y make bzip2 curl unzip
-RUN mkdir -p /build
-WORKDIR /build
-
-# install newer protoc
-RUN wget https://github.com/protocolbuffers/protobuf/releases/download/v21.10/protoc-21.10-linux-aarch_64.zip && \
-    unzip *.zip -d /usr/local && rm -v *.zip && protoc --version
-
-RUN go install -v google.golang.org/protobuf/cmd/protoc-gen-go@v1.28.1
-
-RUN go env
-
-COPY ./go.mod .
-COPY ./go.sum .
-
-RUN --mount=type=cache,target=/go/pkg go mod download -x
-RUN rm -rfv /var/cache/* /var/tmp/*

go.mod

@@ -25,7 +25,6 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
-	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
 	github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
 	golang.org/x/sys v0.0.0-20211013075003-97ac67df715c // indirect

go.sum

@@ -37,6 +37,7 @@ cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9
 cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/MarvinJWendt/testza v0.1.0/go.mod h1:7AxNvlfeHP7Z/hDQ5JtE3OKYT3XFUeLCDE2DQninSqs=
 github.com/MarvinJWendt/testza v0.2.1/go.mod h1:God7bhG8n6uQxwdScay+gjm9/LnO4D3kkcZX4hv9Rp8=
@@ -61,8 +62,6 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -190,13 +189,9 @@ github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rogpeppe/fastuuid v1.1.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
-github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
-github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
-github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/smartystreets/assertions v1.0.0/go.mod h1:kHHU4qYBaI3q23Pp3VPrmWhuIUrLW/7eUrw0BU5VaoM=
 github.com/smartystreets/go-aws-auth v0.0.0-20180515143844-0c1422d1fdb9/go.mod h1:SnhjPscd9TpLiy1LpzGSKh3bXCfxxXuqd9xmQJy3slM=
 github.com/smartystreets/gunit v1.0.0/go.mod h1:qwPWnhz6pn0NnRBP++URONOVyNkPyr4SauJk4cUOwJs=
@@ -221,8 +216,6 @@ github.com/tj/go-buffer v1.1.0/go.mod h1:iyiJpfFcR2B9sXu7KvjbT9fpM4mOelRSDTbntVj
 github.com/tj/go-elastic v0.0.0-20171221160941-36157cbbebc2/go.mod h1:WjeM0Oo1eNAjXGDx2yma7uG2XoyRZTq1uv3M/o7imD0=
 github.com/tj/go-kinesis v0.0.0-20171128231115-08b17f58cb1b/go.mod h1:/yhzCV0xPfx6jb1bBgRFjl5lytqVqZXEaeqWP8lTEao=
 github.com/tj/go-spin v1.1.0/go.mod h1:Mg1mzmePZm4dva8Qz60H2lHwmJ2loum4VIrLgVnKwh4=
-github.com/urfave/cli/v2 v2.3.0 h1:qph92Y649prgesehzOrQjdWyxFOp/QVM+6imKHad91M=
-github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI=
 github.com/urfave/cli/v2 v2.23.6 h1:iWmtKD+prGo1nKUtLO0Wg4z9esfBM4rAV4QRLQiEmJ4=
 github.com/urfave/cli/v2 v2.23.6/go.mod h1:GHupkWPMM0M/sj1a2b4wUrWBPzazNrIjouW6fmdJLxc=
 github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778 h1:QldyIu/L63oPpyvQmHgvgickp1Yw510KJOqX7H24mg8=
@@ -537,7 +530,6 @@ gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMy
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/bork/error.go

@@ -0,0 +1,15 @@
+package bork
+
+import (
+	"errors"
+	"fmt"
+)
+
+var (
+	ErrMissingMagic  = errors.New("missing magic bytes in file")
+	ErrFileTruncated = errors.New("file/stream is truncated abnormally")
+)
+
+func Newf(format string, args ...interface{}) error {
+	return fmt.Errorf(format, args...)
+}

internal/bork/error_test.go

@@ -0,0 +1,11 @@
+package bork
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBuild(t *testing.T) {
+	assert.NotNil(t, ErrMissingMagic)
+}

internal/cli/misc.go

@@ -1,32 +0,0 @@
-package cli
-
-import "fmt"
-
-// FIXME make this write to a bytes.Buffer with fprintf
-func dumpByteSlice(b []byte) {
-	var a [16]byte
-	n := (len(b) + 15) &^ 15
-	for i := 0; i < n; i++ {
-		if i%16 == 0 {
-			fmt.Printf("%4d", i)
-		}
-		if i%8 == 0 {
-			fmt.Print(" ")
-		}
-		if i < len(b) {
-			fmt.Printf(" %02X", b[i])
-		} else {
-			fmt.Print("   ")
-		}
-		if i >= len(b) {
-			a[i%16] = ' '
-		} else if b[i] < 32 || b[i] > 126 {
-			a[i%16] = '.'
-		} else {
-			a[i%16] = b[i]
-		}
-		if i%16 == 15 {
-			fmt.Printf("  %s\n", string(a[:]))
-		}
-	}
-}

internal/log/log.go

@@ -1,6 +1,9 @@
 package log
 
 import (
+	"fmt"
+	"runtime"
+
 	"github.com/apex/log"
 	acli "github.com/apex/log/handlers/cli"
 	"github.com/davecgh/go-spew/spew"
@@ -25,13 +28,25 @@ func Init() {
 	log.SetLevel(log.InfoLevel)
 }
 
+func Debugf(format string, args ...interface{}) {
+	DebugReal(fmt.Sprintf(format, args...), 2)
+}
+
 func Debug(arg string) {
-	log.Debug(arg)
+	DebugReal(arg, 2)
+}
+
+func DebugReal(arg string, cs int) {
+	_, callerFile, callerLine, ok := runtime.Caller(cs)
+	if !ok {
+		return
+	}
+	tag := fmt.Sprintf("%s:%d: ", callerFile, callerLine)
+	log.Debug(tag + arg)
 }
 
 func Dump(args ...interface{}) {
-	str := spew.Sdump(args...)
-	Debug(str)
+	DebugReal(spew.Sdump(args...), 2)
 }
 
 func EnableDebugLogging() {

internal/log/log_test.go

@@ -0,0 +1,12 @@
+package log
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBuild(t *testing.T) {
+	Init()
+	assert.True(t, true)
+}

mfer/deserialize.go

@@ -0,0 +1,89 @@
+package mfer
+
+import (
+	"bytes"
+	"compress/gzip"
+	"errors"
+	"io"
+
+	"git.eeqj.de/sneak/mfer/internal/bork"
+	"git.eeqj.de/sneak/mfer/internal/log"
+	"google.golang.org/protobuf/proto"
+)
+
+func (m *manifest) validateProtoOuter() error {
+	if m.pbOuter.Version != MFFileOuter_VERSION_ONE {
+		return errors.New("unknown version")
+	}
+	if m.pbOuter.CompressionType != MFFileOuter_COMPRESSION_GZIP {
+		return errors.New("unknown compression type")
+	}
+
+	bb := bytes.NewBuffer(m.pbOuter.InnerMessage)
+
+	gzr, err := gzip.NewReader(bb)
+	if err != nil {
+		return err
+	}
+
+	dat, err := io.ReadAll(gzr)
+	defer gzr.Close()
+
+	if err != nil {
+		return err
+	}
+
+	isize := len(dat)
+	if int64(isize) != m.pbOuter.Size {
+		log.Debugf("truncated data, got %d expected %d", isize, m.pbOuter.Size)
+		return bork.ErrFileTruncated
+	}
+	log.Debugf("inner data size is %d", isize)
+	log.Dump(dat)
+	log.Dump(m.pbOuter.Sha256)
+	return nil
+}
+
+func validateMagic(dat []byte) bool {
+	ml := len([]byte(MAGIC))
+	if len(dat) < ml {
+		return false
+	}
+	got := dat[0:ml]
+	expected := []byte(MAGIC)
+	return bytes.Equal(got, expected)
+}
+
+func NewFromProto(input io.Reader) (*manifest, error) {
+	m := New()
+	dat, err := io.ReadAll(input)
+	if err != nil {
+		return nil, err
+	}
+	if !validateMagic(dat) {
+		return nil, errors.New("invalid file format")
+	}
+
+	// remove magic bytes prefix:
+	ml := len([]byte(MAGIC))
+	bb := bytes.NewBuffer(dat[ml:])
+	dat = bb.Bytes()
+
+	log.Dump(dat)
+
+	// deserialize:
+	m.pbOuter = new(MFFileOuter)
+	err = proto.Unmarshal(dat, m.pbOuter)
+
+	if err != nil {
+		return nil, err
+	}
+
+	ve := m.validateProtoOuter()
+	if ve != nil {
+		return nil, ve
+	}
+
+	// FIXME TODO deserialize inner
+	return m, nil
+}

mfer/example_test.go

@@ -0,0 +1,42 @@
+package mfer
+
+import (
+	"bytes"
+	"testing"
+
+	"git.eeqj.de/sneak/mfer/internal/log"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAPIExample(t *testing.T) {
+	// read from filesystem
+	m, err := NewFromFS(&ManifestScanOptions{
+		IgnoreDotfiles: true,
+	}, big)
+	assert.Nil(t, err)
+	assert.NotNil(t, m)
+
+	// scan for files
+	m.Scan()
+
+	// serialize
+	var buf bytes.Buffer
+	m.WriteTo(&buf)
+
+	// show serialized
+	log.Dump(buf.Bytes())
+
+	// do it again
+	var buf2 bytes.Buffer
+	m.WriteTo(&buf2)
+
+	// should be same!
+	assert.True(t, bytes.Equal(buf.Bytes(), buf2.Bytes()))
+
+	// deserialize
+	m2, err := NewFromProto(&buf)
+	assert.Nil(t, err)
+	assert.NotNil(t, m2)
+
+	log.Dump(m2)
+}

mfer/manifest.go

@@ -65,8 +65,7 @@ func (m *manifest) addInputPath(inputPath string) error {
 	}
 	// FIXME check to make sure inputPath/abs exists maybe
 	afs := afero.NewReadOnlyFs(afero.NewBasePathFs(afero.NewOsFs(), abs))
-	m.addInputFS(afs)
-	return nil
+	return m.addInputFS(afs)
 }
 
 func (m *manifest) addInputFS(f afero.Fs) error {
@@ -159,7 +158,6 @@ func (m *manifest) addFile(p string, fi fs.FileInfo, sfsIndex int) error {
 
 func (m *manifest) Scan() error {
 	// FIXME scan and whatever function does the hashing should take ctx
-	log.Debug("manifest scanning")
 	for idx, sfs := range m.sourceFS {
 		if sfs == nil {
 			return errors.New("invalid source fs")

mfer/mf.proto

@@ -9,19 +9,26 @@ message Timestamp {
 
 message MFFileOuter {
     enum Version {
-        NONE = 0;
-        ONE = 1; // only one for now
+        VERSION_NONE = 0;
+        VERSION_ONE = 1; // only one for now
     }
 
     // required mffile root attributes 1xx
     Version version = 101;
-    bytes innerMessage = 102;
+
+    enum CompressionType {
+        COMPRESSION_NONE = 0;
+        COMPRESSION_GZIP = 1;
+    }
+
+    CompressionType compressionType = 102;
+
     // these are used solely to detect corruption/truncation
     // and not for cryptographic integrity.
     int64 size = 103;
     bytes sha256 = 104;
-    bytes deleteme = 105;
 
+    bytes innerMessage = 199;
     // 2xx for optional manifest root attributes
     // think we might use gosignify instead of gpg:
     // github.com/frankbraun/gosignify
@@ -57,8 +64,8 @@ message MFFileChecksum {
 
 message MFFile {
     enum Version {
-        NONE = 0;
-        ONE = 1; // only one for now
+        VERSION_NONE = 0;
+        VERSION_ONE = 1; // only one for now
     }
     Version version = 100;
 

mfer/mfer_test.go

@@ -2,10 +2,10 @@ package mfer
 
 import (
 	"bytes"
+	"fmt"
 	"testing"
 
 	"git.eeqj.de/sneak/mfer/internal/log"
-	"github.com/davecgh/go-spew/spew"
 	"github.com/spf13/afero"
 	"github.com/stretchr/testify/assert"
 )
@@ -16,19 +16,25 @@ var (
 )
 
 var (
-	mf afero.Fs     = afero.NewMemMapFs()
-	af *afero.Afero = &afero.Afero{Fs: mf}
+	af  *afero.Afero = &afero.Afero{Fs: afero.NewMemMapFs()}
+	big *afero.Afero = &afero.Afero{Fs: afero.NewMemMapFs()}
 )
 
 func init() {
+	log.EnableDebugLogging()
+
 	// create test files and directories
 	af.MkdirAll("/a/b/c", 0o755)
 	af.MkdirAll("/.hidden", 0o755)
-	afero.WriteFile(af, "/a/b/c/hello.txt", []byte("hello world\n\n\n\n"), 0o755)
-	afero.WriteFile(af, "/a/b/c/hello2.txt", []byte("hello world\n\n\n\n"), 0o755)
-	afero.WriteFile(af, "/.hidden/hello.txt", []byte("hello world\n"), 0o755)
-	afero.WriteFile(af, "/.hidden/hello2.txt", []byte("hello world\n"), 0o755)
-	log.EnableDebugLogging()
+	af.WriteFile("/a/b/c/hello.txt", []byte("hello world\n\n\n\n"), 0o755)
+	af.WriteFile("/a/b/c/hello2.txt", []byte("hello world\n\n\n\n"), 0o755)
+	af.WriteFile("/.hidden/hello.txt", []byte("hello world\n"), 0o755)
+	af.WriteFile("/.hidden/hello2.txt", []byte("hello world\n"), 0o755)
+
+	big.MkdirAll("/home/user/Library", 0o755)
+	for i := range [25]int{} {
+		big.WriteFile(fmt.Sprintf("/home/user/Library/hello%d.txt", i), []byte("hello world\n"), 0o755)
+	}
 }
 
 func TestPathHiddenFunc(t *testing.T) {
@@ -45,6 +51,7 @@ func TestManifestGenerationOne(t *testing.T) {
 	}, af)
 	assert.Nil(t, err)
 	assert.NotNil(t, m)
+	m.Scan()
 	assert.Equal(t, int64(2), m.GetFileCount())
 	assert.Equal(t, int64(30), m.GetTotalFileSize())
 }
@@ -55,7 +62,7 @@ func TestManifestGenerationTwo(t *testing.T) {
 	}, af)
 	assert.Nil(t, err)
 	assert.NotNil(t, m)
-	spew.Dump(m)
+	m.Scan()
 	assert.Equal(t, int64(4), m.GetFileCount())
 	assert.Equal(t, int64(54), m.GetTotalFileSize())
 	err = m.generate()
@@ -63,5 +70,5 @@ func TestManifestGenerationTwo(t *testing.T) {
 	var buf bytes.Buffer
 	err = m.WriteTo(&buf)
 	assert.Nil(t, err)
-	spew.Dump(buf)
+	log.Dump(buf.Bytes())
 }

mfer/serialize.go

@@ -2,15 +2,19 @@ package mfer
 
 import (
 	"bytes"
+	"compress/gzip"
+	"crypto/sha256"
 	"errors"
 	"time"
 
-	"git.eeqj.de/sneak/mfer/internal/log"
 	"google.golang.org/protobuf/proto"
 )
 
 //go:generate protoc --go_out=. --go_opt=paths=source_relative mf.proto
 
+// rot13("MANIFEST")
+const MAGIC string = "ZNAVSRFG"
+
 func newTimestampFromTime(t time.Time) *Timestamp {
 	out := &Timestamp{
 		Seconds: t.Unix(),
@@ -20,10 +24,6 @@ func newTimestampFromTime(t time.Time) *Timestamp {
 }
 
 func (m *manifest) generate() error {
-	log.Debug("generate()")
-
-	const MAGIC string = "ZNAVSRFG"
-
 	if m.pbInner == nil {
 		e := m.generateInner()
 		if e != nil {
@@ -36,7 +36,7 @@ func (m *manifest) generate() error {
 			return e
 		}
 	}
-	dat, err := proto.Marshal(m.pbOuter)
+	dat, err := proto.MarshalOptions{Deterministic: true}.Marshal(m.pbOuter)
 	if err != nil {
 		return err
 	}
@@ -49,29 +49,46 @@ func (m *manifest) generate() error {
 }
 
 func (m *manifest) generateOuter() error {
-	log.Debug("generateOuter()")
 	if m.pbInner == nil {
 		return errors.New("internal error")
 	}
-	innerData, err := proto.Marshal(m.pbInner)
+	innerData, err := proto.MarshalOptions{Deterministic: true}.Marshal(m.pbInner)
 	if err != nil {
 		return err
 	}
+
+	h := sha256.New()
+	h.Write(innerData)
+
+	idc := new(bytes.Buffer)
+	gzw, err := gzip.NewWriterLevel(idc, gzip.BestCompression)
+	if err != nil {
+		return err
+	}
+	_, err = gzw.Write(innerData)
+	if err != nil {
+		return err
+	}
+
+	gzw.Close()
+
 	o := &MFFileOuter{
-		InnerMessage: innerData,
+		InnerMessage:    idc.Bytes(),
+		Size:            int64(len(innerData)),
+		Sha256:          h.Sum(nil),
+		Version:         MFFileOuter_VERSION_ONE,
+		CompressionType: MFFileOuter_COMPRESSION_GZIP,
 	}
 	m.pbOuter = o
 	return nil
 }
 
 func (m *manifest) generateInner() error {
-	log.Debug("generateInner()")
 	m.pbInner = &MFFile{
-		Version:   MFFile_ONE,
+		Version:   MFFile_VERSION_ONE,
 		CreatedAt: newTimestampFromTime(time.Now()),
 		Files:     []*MFFilePath{},
 	}
-
 	for _, f := range m.files {
 		nf := &MFFilePath{
 			Path: f.path,
@@ -79,6 +96,5 @@ func (m *manifest) generateInner() error {
 		}
 		m.pbInner.Files = append(m.pbInner.Files, nf)
 	}
-	log.Dump(m.pbInner)
 	return nil
 }