Bump version to 3.1.0

This is to incorporate the fix:
https://github.com/gilbertchen/go-dropbox/commit/60ebcd

Otherwise the access token won't get updated after token refresh

duplicacy/duplicacy_main.go

@@ -981,10 +981,11 @@ func checkSnapshots(context *cli.Context) {
 	checkChunks := context.Bool("chunks")
 	searchFossils := context.Bool("fossils")
 	resurrect := context.Bool("resurrect")
+	rewrite := context.Bool("rewrite")
 	persist := context.Bool("persist")
 
 	backupManager.SetupSnapshotCache(preference.Name)
-	backupManager.SnapshotManager.CheckSnapshots(id, revisions, tag, showStatistics, showTabular, checkFiles, checkChunks, searchFossils, resurrect, threads, persist)
+	backupManager.SnapshotManager.CheckSnapshots(id, revisions, tag, showStatistics, showTabular, checkFiles, checkChunks, searchFossils, resurrect, rewrite, threads, persist)
 
 	runScript(context, preference.Name, "post")
 }
@@ -1676,6 +1677,10 @@ func main() {
 					Name:  "resurrect",
 					Usage: "turn referenced fossils back into chunks",
 				},
+				cli.BoolFlag{
+					Name:  "rewrite",
+					Usage: "rewrite chunks with recoverable corruption",
+				},
 				cli.BoolFlag{
 					Name:  "files",
 					Usage: "verify the integrity of every file",
@@ -2210,7 +2215,7 @@ func main() {
 	app.Name = "duplicacy"
 	app.HelpName = "duplicacy"
 	app.Usage = "A new generation cloud backup tool based on lock-free deduplication"
-	app.Version = "3.0.0" + " (" + GitCommit + ")"
+	app.Version = "3.1.0" + " (" + GitCommit + ")"
 
 	// Exit with code 2 if an invalid command is provided
 	app.CommandNotFound = func(context *cli.Context, command string) {

go.mod

@@ -1,6 +1,6 @@
 module github.com/gilbertchen/duplicacy
 
-go 1.19
+go 1.16
 
 require (
 	cloud.google.com/go v0.38.0
@@ -9,7 +9,7 @@ require (
 	github.com/bkaradzic/go-lz4 v1.0.0
 	github.com/gilbertchen/azure-sdk-for-go v14.1.2-0.20180323033227-8fd4663cab7c+incompatible
 	github.com/gilbertchen/cli v1.2.1-0.20160223210219-1de0a1836ce9
-	github.com/gilbertchen/go-dropbox v0.0.0-20221004154447-61204091e804
+	github.com/gilbertchen/go-dropbox v0.0.0-20221207034530-08c0c180a4f9
 	github.com/gilbertchen/go-ole v1.2.0
 	github.com/gilbertchen/goamz v0.0.0-20170712012135-eada9f4e8cc2
 	github.com/gilbertchen/gopass v0.0.0-20170109162249-bf9dde6d0d2c
@@ -17,7 +17,7 @@ require (
 	github.com/gilbertchen/xattr v0.0.0-20160926155429-68e7a6806b01
 	github.com/klauspost/reedsolomon v1.9.9
 	github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1
-	github.com/minio/highwayhash v1.0.1
+	github.com/minio/highwayhash v1.0.2
 	github.com/ncw/swift/v2 v2.0.1
 	github.com/pkg/sftp v1.11.0
 	github.com/pkg/xattr v0.4.1
@@ -34,11 +34,11 @@ require (
 	github.com/calebcase/tmpfile v1.0.3 // indirect
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
 	github.com/dnaeon/go-vcr v1.2.0 // indirect
+	github.com/gilbertchen/highwayhash v0.0.0-20221109044721-eeab1f4799d8 // indirect
 	github.com/goamz/goamz v0.0.0-20180131231218-8b901b531db8 // indirect
 	github.com/godbus/dbus v4.1.0+incompatible // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
-	github.com/golang/protobuf v1.3.5 // indirect
 	github.com/googleapis/gax-go/v2 v2.0.5 // indirect
 	github.com/jmespath/go-jmespath v0.3.0 // indirect
 	github.com/klauspost/cpuid v1.3.1 // indirect

go.sum

@@ -1,82 +1,143 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.37.0/go.mod h1:TS1dMSSfndXH133OKGwekG838Om/cQT0BUHV3HcBgoo=
 cloud.google.com/go v0.38.0 h1:ROfEUZz+Gh5pa62DJWXSaonyu3StP6EA6lPEXPI6mCo=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU=
+dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
+dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4=
+dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
+git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
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 github.com/aryann/difflib v0.0.0-20170710044230-e206f873d14a/go.mod h1:DAHtR1m6lCRdSC2Tm3DSWRPvIPr6xNKyeHdqDQSQT+A=
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 github.com/gilbertchen/azure-sdk-for-go v14.1.2-0.20180323033227-8fd4663cab7c+incompatible/go.mod h1:qsVRCpBUm2l0eMUeI9wZ47yzra2+lv2YkGhMZpzBVUc=
 github.com/gilbertchen/cli v1.2.1-0.20160223210219-1de0a1836ce9 h1:uMgtTp4sRJ7kMQMF3xEKeFntf3XatwkLNL/byj8v97g=
 github.com/gilbertchen/cli v1.2.1-0.20160223210219-1de0a1836ce9/go.mod h1:WOnN3JdZiZwUaYtLH2DRxe5PpD43wuOIvc/Wem/39M0=
 github.com/gilbertchen/go-dropbox v0.0.0-20221004154447-61204091e804 h1:JZ0P02xoeaITbKLFAdBfiH8SNNvKGE2Y/RLdYtWoEVE=
 github.com/gilbertchen/go-dropbox v0.0.0-20221004154447-61204091e804/go.mod h1:85+2CRHC/klHy4vEM+TYtbhDo2wMjPa4JNdVzUHsDIk=
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 github.com/gilbertchen/gopass v0.0.0-20170109162249-bf9dde6d0d2c/go.mod h1:HDsXH7AAfDsfYYX0te4zsNbnwVvZ2RtLEOCjN4y84jw=
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+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220128215802-99c3d69c2c27 h1:XDXtA5hveEEV8JB2l7nhMTp3t3cHp9ZpwcdjqyEWLlo=
 golang.org/x/sys v0.0.0-20220128215802-99c3d69c2c27/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
@@ -202,16 +369,21 @@ golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20181030000716-a0a13e073c7b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200425043458-8463f397d07c/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.1 h1:wGiQel/hW0NnEkJUk8lbzkX2gFJU6PFxf1v5OlCfuOs=
 golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
@@ -220,21 +392,33 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
+google.golang.org/api v0.0.0-20181030000543-1d582fd0359e/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
+google.golang.org/api v0.1.0/go.mod h1:UGEZY7KEX120AnNLIHFMKIo4obdJhkp2tPbaPlQx13Y=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.21.0 h1:zS+Q/CJJnVlXpXQVIz+lH0ZT2lBuT2ac7XD8Y/3w6hY=
 google.golang.org/api v0.21.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/appengine v1.3.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.6.5 h1:tycE03LOZYQNhDpS27tcQdAzLCVMaj7QT2SXxebnpCM=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
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+google.golang.org/genproto v0.0.0-20181029155118-b69ba1387ce2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg=
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 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20200409111301-baae70f3302d h1:I7Vuu5Ejagca+VcgfBINHke3xwjCTYnIG4Q57fv0wYY=
 google.golang.org/genproto v0.0.0-20200409111301-baae70f3302d/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
+google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
+google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
@@ -242,16 +426,39 @@ google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQ
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.28.1 h1:C1QC6KzgSiLyBabDi87BbjaGreoRgGUF5nOyvfrAZ1k=
 google.golang.org/grpc v1.28.1/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
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 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
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src/duplicacy_acdclient_test.go

@@ -1,153 +0,0 @@
-// Copyright (c) Acrosync LLC. All rights reserved.
-// Free for personal use and commercial trial
-// Commercial use requires per-user licenses available from https://duplicacy.com
-
-package duplicacy
-
-import (
-	"crypto/sha256"
-	"encoding/hex"
-	"fmt"
-	"io"
-	"testing"
-
-	crypto_rand "crypto/rand"
-	"math/rand"
-)
-
-func TestACDClient(t *testing.T) {
-
-	acdClient, err := NewACDClient("acd-token.json")
-	if err != nil {
-		t.Errorf("Failed to create the ACD client: %v", err)
-		return
-	}
-
-	acdClient.TestMode = true
-
-	rootID, _, _, err := acdClient.ListByName("", "")
-	if err != nil {
-		t.Errorf("Failed to get the root node: %v", err)
-		return
-	}
-
-	if rootID == "" {
-		t.Errorf("No root node")
-		return
-	}
-
-	testID, _, _, err := acdClient.ListByName(rootID, "test")
-	if err != nil {
-		t.Errorf("Failed to list the test directory: %v", err)
-		return
-	}
-	if testID == "" {
-		testID, err = acdClient.CreateDirectory(rootID, "test")
-		if err != nil {
-			t.Errorf("Failed to create the test directory: %v", err)
-			return
-		}
-	}
-
-	test1ID, _, _, err := acdClient.ListByName(testID, "test1")
-	if err != nil {
-		t.Errorf("Failed to list the test1 directory: %v", err)
-		return
-	}
-	if test1ID == "" {
-		test1ID, err = acdClient.CreateDirectory(testID, "test1")
-		if err != nil {
-			t.Errorf("Failed to create the test1 directory: %v", err)
-			return
-		}
-	}
-
-	test2ID, _, _, err := acdClient.ListByName(testID, "test2")
-	if err != nil {
-		t.Errorf("Failed to list the test2 directory: %v", err)
-		return
-	}
-	if test2ID == "" {
-		test2ID, err = acdClient.CreateDirectory(testID, "test2")
-		if err != nil {
-			t.Errorf("Failed to create the test2 directory: %v", err)
-			return
-		}
-	}
-
-	fmt.Printf("test1: %s, test2: %s\n", test1ID, test2ID)
-
-	numberOfFiles := 20
-	maxFileSize := 64 * 1024
-
-	for i := 0; i < numberOfFiles; i++ {
-		content := make([]byte, rand.Int()%maxFileSize+1)
-		_, err = crypto_rand.Read(content)
-		if err != nil {
-			t.Errorf("Error generating random content: %v", err)
-			return
-		}
-
-		hasher := sha256.New()
-		hasher.Write(content)
-		filename := hex.EncodeToString(hasher.Sum(nil))
-
-		fmt.Printf("file: %s\n", filename)
-
-		_, err = acdClient.UploadFile(test1ID, filename, content, 100)
-		if err != nil {
-			/*if e, ok := err.(ACDError); !ok || e.Status != 409 */ {
-				t.Errorf("Failed to upload the file %s: %v", filename, err)
-				return
-			}
-		}
-	}
-
-	entries, err := acdClient.ListEntries(test1ID, true, false)
-	if err != nil {
-		t.Errorf("Error list randomly generated files: %v", err)
-		return
-	}
-
-	for _, entry := range entries {
-		err = acdClient.MoveFile(entry.ID, test1ID, test2ID)
-		if err != nil {
-			t.Errorf("Failed to move %s: %v", entry.Name, err)
-			return
-		}
-	}
-
-	entries, err = acdClient.ListEntries(test2ID, true, false)
-	if err != nil {
-		t.Errorf("Error list randomly generated files: %v", err)
-		return
-	}
-
-	for _, entry := range entries {
-		readCloser, _, err := acdClient.DownloadFile(entry.ID)
-		if err != nil {
-			t.Errorf("Error downloading file %s: %v", entry.Name, err)
-			return
-		}
-
-		hasher := sha256.New()
-		io.Copy(hasher, readCloser)
-		hash := hex.EncodeToString(hasher.Sum(nil))
-
-		if hash != entry.Name {
-			t.Errorf("File %s, hash %s", entry.Name, hash)
-		}
-
-		readCloser.Close()
-	}
-
-	for _, entry := range entries {
-
-		err = acdClient.DeleteFile(entry.ID)
-		if err != nil {
-			t.Errorf("Failed to delete the file %s: %v", entry.Name, err)
-			return
-		}
-	}
-
-}

src/duplicacy_b2client_test.go

@@ -1,133 +0,0 @@
-// Copyright (c) Acrosync LLC. All rights reserved.
-// Free for personal use and commercial trial
-// Commercial use requires per-user licenses available from https://duplicacy.com
-
-package duplicacy
-
-import (
-	"crypto/sha256"
-	"encoding/hex"
-	"encoding/json"
-	"testing"
-
-	crypto_rand "crypto/rand"
-	"io"
-	"io/ioutil"
-	"math/rand"
-)
-
-func createB2ClientForTest(t *testing.T) (*B2Client, string) {
-	config, err := ioutil.ReadFile("test_storage.conf")
-	if err != nil {
-		t.Errorf("Failed to read config file: %v", err)
-		return nil, ""
-	}
-
-	storages := make(map[string]map[string]string)
-
-	err = json.Unmarshal(config, &storages)
-	if err != nil {
-		t.Errorf("Failed to parse config file: %v", err)
-		return nil, ""
-	}
-
-	b2, found := storages["b2"]
-	if !found {
-		t.Errorf("Failed to find b2 config")
-		return nil, ""
-	}
-
-	return NewB2Client(b2["account"], b2["key"], "", b2["directory"], 1), b2["bucket"]
-
-}
-
-func TestB2Client(t *testing.T) {
-
-	b2Client, bucket := createB2ClientForTest(t)
-	if b2Client == nil {
-		return
-	}
-
-	b2Client.TestMode = true
-
-	err, _ := b2Client.AuthorizeAccount(0)
-	if err != nil {
-		t.Errorf("Failed to authorize the b2 account: %v", err)
-		return
-	}
-
-	err = b2Client.FindBucket(bucket)
-	if err != nil {
-		t.Errorf("Failed to find bucket '%s': %v", bucket, err)
-		return
-	}
-
-	testDirectory := "b2client_test/"
-
-	files, err := b2Client.ListFileNames(0, testDirectory, false, false)
-	if err != nil {
-		t.Errorf("Failed to list files: %v", err)
-		return
-	}
-
-	for _, file := range files {
-		err = b2Client.DeleteFile(0, file.FileName, file.FileID)
-		if err != nil {
-			t.Errorf("Failed to delete file '%s': %v", file.FileName, err)
-		}
-	}
-
-	maxSize := 10000
-	for i := 0; i < 20; i++ {
-		size := rand.Int()%maxSize + 1
-		content := make([]byte, size)
-		_, err := crypto_rand.Read(content)
-		if err != nil {
-			t.Errorf("Error generating random content: %v", err)
-			return
-		}
-
-		hash := sha256.Sum256(content)
-		name := hex.EncodeToString(hash[:])
-
-		err = b2Client.UploadFile(0, testDirectory+name, content, 100)
-		if err != nil {
-			t.Errorf("Error uploading file '%s': %v", name, err)
-			return
-		}
-	}
-
-	files, err = b2Client.ListFileNames(0, testDirectory, false, false)
-	if err != nil {
-		t.Errorf("Failed to list files: %v", err)
-		return
-	}
-
-	for _, file := range files {
-
-		readCloser, _, err := b2Client.DownloadFile(0, file.FileName)
-		if err != nil {
-			t.Errorf("Error downloading file '%s': %v", file.FileName, err)
-			return
-		}
-
-		defer readCloser.Close()
-
-		hasher := sha256.New()
-		_, err = io.Copy(hasher, readCloser)
-
-		hash := hex.EncodeToString(hasher.Sum(nil))
-
-		if testDirectory+hash != file.FileName {
-			t.Errorf("File %s has hash %s", file.FileName, hash)
-		}
-
-	}
-
-	for _, file := range files {
-		err = b2Client.DeleteFile(0, file.FileName, file.FileID)
-		if err != nil {
-			t.Errorf("Failed to delete file '%s': %v", file.FileName, err)
-		}
-	}
-}

src/duplicacy_backupmanager.go

@@ -223,7 +223,7 @@ func (manager *BackupManager) Backup(top string, quickMode bool, threads int, ta
 
 	localListingChannel := make(chan *Entry)
 	remoteListingChannel := make(chan *Entry)
-	chunkOperator := CreateChunkOperator(manager.config, manager.storage, manager.snapshotCache, showStatistics, threads, false)
+	chunkOperator := CreateChunkOperator(manager.config, manager.storage, manager.snapshotCache, showStatistics, false, threads, false)
 
 	var skippedDirectories []string
 	var skippedFiles []string
@@ -301,26 +301,27 @@ func (manager *BackupManager) Backup(top string, quickMode bool, threads int, ta
 		if compareResult == 0  {
 			// No need to check if it is in hash mode -- in that case remote listing is nil
 			if localEntry.IsSameAs(remoteEntry) && localEntry.IsFile() {
+				if localEntry.Size > 0 {
+					localEntry.Hash = remoteEntry.Hash
+					localEntry.StartOffset = remoteEntry.StartOffset
+					localEntry.EndOffset = remoteEntry.EndOffset
+					delta := remoteEntry.StartChunk - len(localEntryList.PreservedChunkHashes)
+					if lastPreservedChunk != remoteEntry.StartChunk {
+						lastPreservedChunk = remoteEntry.StartChunk
+						localEntryList.AddPreservedChunk(remoteSnapshot.ChunkHashes[lastPreservedChunk], remoteSnapshot.ChunkLengths[lastPreservedChunk])
+					} else {
+						delta++
+					}
 
-				localEntry.Hash = remoteEntry.Hash
-				localEntry.StartOffset = remoteEntry.StartOffset
-				localEntry.EndOffset = remoteEntry.EndOffset
-				delta := remoteEntry.StartChunk - len(localEntryList.PreservedChunkHashes)
-				if lastPreservedChunk != remoteEntry.StartChunk {
-					lastPreservedChunk = remoteEntry.StartChunk
-					localEntryList.AddPreservedChunk(remoteSnapshot.ChunkHashes[lastPreservedChunk], remoteSnapshot.ChunkLengths[lastPreservedChunk])
-				} else {
-					delta++
+					for i := remoteEntry.StartChunk + 1; i <= remoteEntry.EndChunk; i++ {
+						localEntryList.AddPreservedChunk(remoteSnapshot.ChunkHashes[i], remoteSnapshot.ChunkLengths[i])
+						lastPreservedChunk = i
+					}
+
+					localEntry.StartChunk = remoteEntry.StartChunk - delta
+					localEntry.EndChunk = remoteEntry.EndChunk - delta
+					preservedFileSize += localEntry.Size
 				}
-
-				for i := remoteEntry.StartChunk + 1; i <= remoteEntry.EndChunk; i++ {
-					localEntryList.AddPreservedChunk(remoteSnapshot.ChunkHashes[i], remoteSnapshot.ChunkLengths[i])
-					lastPreservedChunk = i
-				}
-
-				localEntry.StartChunk = remoteEntry.StartChunk - delta
-				localEntry.EndChunk = remoteEntry.EndChunk - delta
-				preservedFileSize += localEntry.Size
 			} else {
 				totalModifiedFileSize += localEntry.Size
 				if localEntry.Size > 0 {
@@ -672,7 +673,7 @@ func (manager *BackupManager) Restore(top string, revision int, inPlace bool, qu
 
 	localListingChannel := make(chan *Entry)
 	remoteListingChannel := make(chan *Entry)
-	chunkOperator := CreateChunkOperator(manager.config, manager.storage, manager.snapshotCache, showStatistics, threads, false)
+	chunkOperator := CreateChunkOperator(manager.config, manager.storage, manager.snapshotCache, showStatistics, false, threads, allowFailures)
 
 	LOG_INFO("RESTORE_INDEXING", "Indexing %s", top)
 	go func() {
@@ -1047,24 +1048,24 @@ func (manager *BackupManager) UploadSnapshot(chunkOperator *ChunkOperator, top s
 
 	uploadEntryInfoFunc := func(entry *Entry) error {
 
-		delta := entry.StartChunk - len(chunkHashes) + 1
-		if entry.StartChunk != lastChunk {
-			chunkHashes = append(chunkHashes, snapshot.ChunkHashes[entry.StartChunk])
-			chunkLengths = append(chunkLengths, snapshot.ChunkLengths[entry.StartChunk])
-			delta--
-		}
+		if entry.IsFile() && entry.Size > 0 {
+			delta := entry.StartChunk - len(chunkHashes) + 1
+			if entry.StartChunk != lastChunk {
+				chunkHashes = append(chunkHashes, snapshot.ChunkHashes[entry.StartChunk])
+				chunkLengths = append(chunkLengths, snapshot.ChunkLengths[entry.StartChunk])
+				delta--
+			}
 
-		for i := entry.StartChunk + 1; i <= entry.EndChunk; i++ {
-			chunkHashes = append(chunkHashes, snapshot.ChunkHashes[i])
-			chunkLengths = append(chunkLengths, snapshot.ChunkLengths[i])
-		}
+			for i := entry.StartChunk + 1; i <= entry.EndChunk; i++ {
+				chunkHashes = append(chunkHashes, snapshot.ChunkHashes[i])
+				chunkLengths = append(chunkLengths, snapshot.ChunkLengths[i])
+			}
 
-		lastChunk = entry.EndChunk
-		entry.StartChunk -= delta
-		entry.EndChunk -= delta
+			lastChunk = entry.EndChunk
+			entry.StartChunk -= delta
+			entry.EndChunk -= delta
 
-		if entry.IsFile() {
-			delta := entry.EndChunk - entry.StartChunk
+			delta = entry.EndChunk - entry.StartChunk
 			entry.StartChunk -= lastEndChunk
 			lastEndChunk = entry.EndChunk
 			entry.EndChunk = delta
@@ -1714,13 +1715,13 @@ func (manager *BackupManager) CopySnapshots(otherManager *BackupManager, snapsho
 
 	LOG_INFO("SNAPSHOT_COPY", "Chunks to copy: %d, to skip: %d, total: %d", len(chunksToCopy), len(chunks) - len(chunksToCopy), len(chunks))
 
-	chunkDownloader := CreateChunkOperator(manager.config, manager.storage, nil, false, downloadingThreads, false)
+	chunkDownloader := CreateChunkOperator(manager.config, manager.storage, nil, false, false, downloadingThreads, false)
 
 	var uploadedBytes int64
 	startTime := time.Now()
 
 	copiedChunks := 0
-	chunkUploader := CreateChunkOperator(otherManager.config, otherManager.storage, nil, false, uploadingThreads, false)
+	chunkUploader := CreateChunkOperator(otherManager.config, otherManager.storage, nil, false, false, uploadingThreads, false)
 	chunkUploader.UploadCompletionFunc =  func(chunk *Chunk, chunkIndex int, skipped bool, chunkSize int, uploadSize int) {
 		action := "Skipped"
 		if !skipped {

src/duplicacy_backupmanager_test.go

@@ -358,16 +358,17 @@ func TestBackupManager(t *testing.T) {
 	if numberOfSnapshots != 3 {
 		t.Errorf("Expected 3 snapshots but got %d", numberOfSnapshots)
 	}
-	backupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1" /*revisions*/, []int{1, 2, 3} /*tag*/, "",
-		/*showStatistics*/ false /*showTabular*/, false /*checkFiles*/, false /*checkChunks*/, false /*searchFossils*/, false /*resurrect*/, false, 1 /*allowFailures*/, false)
+			
+	backupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1", /*revisions*/ []int{1, 2, 3}, /*tag*/ "", /*showStatistics*/ false,
+	    /*showTabular*/ false, /*checkFiles*/ false, /*checkChunks*/ false, /*searchFossils*/ false, /*resurrect*/ false, /*rewiret*/ false, 1,  /*allowFailures*/false)
 	backupManager.SnapshotManager.PruneSnapshots("host1", "host1" /*revisions*/, []int{1} /*tags*/, nil /*retentions*/, nil,
 		/*exhaustive*/ false /*exclusive=*/, false /*ignoredIDs*/, nil /*dryRun*/, false /*deleteOnly*/, false /*collectOnly*/, false, 1)
 	numberOfSnapshots = backupManager.SnapshotManager.ListSnapshots( /*snapshotID*/ "host1" /*revisionsToList*/, nil /*tag*/, "" /*showFiles*/, false /*showChunks*/, false)
 	if numberOfSnapshots != 2 {
 		t.Errorf("Expected 2 snapshots but got %d", numberOfSnapshots)
 	}
-	backupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1" /*revisions*/, []int{2, 3} /*tag*/, "",
-		/*showStatistics*/ false /*showTabular*/, false /*checkFiles*/, false /*checkChunks*/, false /*searchFossils*/, false /*resurrect*/, false, 1 /*allowFailures*/, false)
+	backupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1", /*revisions*/ []int{2, 3}, /*tag*/ "", /*showStatistics*/ false,
+	     /*showTabular*/ false, /*checkFiles*/ false, /*checkChunks*/ false, /*searchFossils*/ false, /*resurrect*/ false, /*rewiret*/ false, 1, /*allowFailures*/ false)
 	backupManager.Backup(testDir+"/repository1" /*quickMode=*/, false, threads, "fourth", false, false, 0, false, 1024, 1024)
 	backupManager.SnapshotManager.PruneSnapshots("host1", "host1" /*revisions*/, nil /*tags*/, nil /*retentions*/, nil,
 		/*exhaustive*/ false /*exclusive=*/, true /*ignoredIDs*/, nil /*dryRun*/, false /*deleteOnly*/, false /*collectOnly*/, false, 1)
@@ -375,8 +376,8 @@ func TestBackupManager(t *testing.T) {
 	if numberOfSnapshots != 3 {
 		t.Errorf("Expected 3 snapshots but got %d", numberOfSnapshots)
 	}
-	backupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1" /*revisions*/, []int{2, 3, 4} /*tag*/, "",
-		/*showStatistics*/ false /*showTabular*/, false /*checkFiles*/, false /*checkChunks*/, false /*searchFossils*/, false /*resurrect*/, false, 1 /*allowFailures*/, false)
+	backupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1", /*revisions*/ []int{2, 3, 4}, /*tag*/ "", /*showStatistics*/ false,
+	    /*showTabular*/ false, /*checkFiles*/ false, /*checkChunks*/ false, /*searchFossils*/ false, /*resurrect*/ false, /*rewiret*/ false, 1, /*allowFailures*/ false)
 
 	/*buf := make([]byte, 1<<16)
 	  runtime.Stack(buf, true)
@@ -548,13 +549,13 @@ func TestPersistRestore(t *testing.T) {
 
 
 	// check snapshots
-	unencBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1" /*revisions*/, []int{1} /*tag*/, "",
-		/*showStatistics*/ true /*showTabular*/, false /*checkFiles*/, true /*checkChunks*/, false,
-		/*searchFossils*/ false /*resurrect*/, false, 1 /*allowFailures*/, false)
+	unencBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1", /*revisions*/ []int{1}, /*tag*/ "",
+		/*showStatistics*/ true, /*showTabular*/ false, /*checkFiles*/ true, /*checkChunks*/ false,
+		/*searchFossils*/ false, /*resurrect*/ false, /*rewiret*/ false, 1, /*allowFailures*/ false)
 
-	encBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1" /*revisions*/, []int{1} /*tag*/, "",
-		/*showStatistics*/ true /*showTabular*/, false /*checkFiles*/, true /*checkChunks*/, false,
-		 /*searchFossils*/ false /*resurrect*/, false, 1 /*allowFailures*/, false)
+	encBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1", /*revisions*/ []int{1}, /*tag*/ "",
+		/*showStatistics*/ true, /*showTabular*/ false, /*checkFiles*/ true, /*checkChunks*/ false,
+		 /*searchFossils*/ false, /*resurrect*/ false, /*rewiret*/ false, 1, /*allowFailures*/ false)
 		
 	// check functions
 	checkAllUncorrupted := func(cmpRepository string) {
@@ -640,18 +641,28 @@ func TestPersistRestore(t *testing.T) {
 			os.Remove(testDir+"/unenc_storage"+"/chunks"+chunkToCorrupt1)
 			os.Remove(testDir+"/enc_storage"+"/chunks"+chunkToCorrupt2)
 		}
-		
+
+		// This is to make sure that allowFailures is set to true.  Note that this is not needed
+		// in the production code because chunkOperator can be only recreated multiple time in tests.
+		if unencBackupManager.SnapshotManager.chunkOperator != nil {
+			unencBackupManager.SnapshotManager.chunkOperator.allowFailures = true
+		}
+
+		if encBackupManager.SnapshotManager.chunkOperator != nil {
+			encBackupManager.SnapshotManager.chunkOperator.allowFailures = true
+		}
+
 		// check snapshots with --persist (allowFailures == true)
 		// this would cause a panic and os.Exit from duplicacy_log if allowFailures == false
-		unencBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1" /*revisions*/, []int{1} /*tag*/, "",
-			/*showStatistics*/ true /*showTabular*/, false /*checkFiles*/, true /*checkChunks*/, false,
-			/*searchFossils*/ false /*resurrect*/, false, 1 /*allowFailures*/, true)
+		unencBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1", /*revisions*/ []int{1}, /*tag*/ "",
+			/*showStatistics*/ true, /*showTabular*/ false, /*checkFiles*/ true, /*checkChunks*/ false,
+			/*searchFossils*/ false, /*resurrect*/ false, /*rewrite*/ false, 1, /*allowFailures*/ true)
 
-		encBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1" /*revisions*/, []int{1} /*tag*/, "",
-			/*showStatistics*/ true /*showTabular*/, false /*checkFiles*/, true /*checkChunks*/, false,
-			/*searchFossils*/ false /*resurrect*/, false, 1 /*allowFailures*/, true)
+		encBackupManager.SnapshotManager.CheckSnapshots( /*snapshotID*/ "host1", /*revisions*/ []int{1}, /*tag*/ "",
+			/*showStatistics*/ true, /*showTabular*/ false, /*checkFiles*/ true, /*checkChunks*/ false,
+			/*searchFossils*/ false, /*resurrect*/ false, /*rewrite*/ false, 1, /*allowFailures*/ true)
 
-		
+	
 		// test restore corrupted, inPlace = true, corrupted files will have hash failures
 		os.RemoveAll(testDir+"/repository2")
 		SetDuplicacyPreferencePath(testDir + "/repository2/.duplicacy")

src/duplicacy_chunk.go

@@ -24,6 +24,12 @@ import (
 	"github.com/bkaradzic/go-lz4"
 	"github.com/minio/highwayhash"
 	"github.com/klauspost/reedsolomon"
+
+	// This is a fork of github.com/minio/highwayhash at 1.0.1 that computes incorrect hash on
+	// arm64 machines.  We need this fork to be able to read the chunks created by Duplicacy
+	// CLI 3.0.1 which unfortunately relies on incorrect hashes to determine if each shard is valid.
+	wronghighwayhash "github.com/gilbertchen/highwayhash"
+
 )
 
 // A chunk needs to acquire a new buffer and return the old one for every encrypt/decrypt operation, therefore
@@ -371,8 +377,9 @@ func init() {
 
 // Decrypt decrypts the encrypted data stored in the chunk buffer.  If derivationKey is not nil, the actual
 // encryption key will be HMAC-SHA256(encryptionKey, derivationKey).
-func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err error) {
+func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err error, rewriteNeeded bool) {
 
+	rewriteNeeded = false
 	var offset int
 
 	encryptedBuffer := AllocateChunkBuffer()
@@ -388,13 +395,13 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 
 		// The chunk was encoded with erasure coding
 		if len(encryptedBuffer.Bytes()) < bannerLength + 14 {
-			return fmt.Errorf("Erasure coding header truncated (%d bytes)", len(encryptedBuffer.Bytes()))
+			return fmt.Errorf("Erasure coding header truncated (%d bytes)", len(encryptedBuffer.Bytes())), false
 		}
 		// Check the header checksum
 		header := encryptedBuffer.Bytes()[bannerLength: bannerLength + 14]
 		if header[12] != header[0] ^ header[2] ^ header[4] ^ header[6] ^ header[8] ^ header[10] ||
 		   header[13] != header[1] ^ header[3] ^ header[5] ^ header[7] ^ header[9] ^ header[11] {
-			return fmt.Errorf("Erasure coding header corrupted (%x)", header)
+			return fmt.Errorf("Erasure coding header corrupted (%x)", header), false
 		}
 
 		// Read the parameters
@@ -414,7 +421,7 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 		} else if len(encryptedBuffer.Bytes()) > minimumLength {
 			LOG_WARN("CHUNK_ERASURECODE", "Chunk is truncated (%d out of %d bytes)", len(encryptedBuffer.Bytes()), expectedLength)
 		} else {
-			return fmt.Errorf("Not enough chunk data for recovery; chunk size: %d bytes, data size: %d, parity: %d/%d", chunkSize, len(encryptedBuffer.Bytes()), dataShards, parityShards)
+			return fmt.Errorf("Not enough chunk data for recovery; chunk size: %d bytes, data size: %d, parity: %d/%d", chunkSize, len(encryptedBuffer.Bytes()), dataShards, parityShards), false
 		}
 
 		// Where the hashes start
@@ -426,6 +433,8 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 		recoveryNeeded := false
 		hashKey := make([]byte, 32)
 		availableShards := 0
+		wrongHashDetected := false
+
 		for i := 0; i < dataShards + parityShards; i++ {
 			start := dataOffset + i * shardSize
 			if start + shardSize > len(encryptedBuffer.Bytes()) {
@@ -435,15 +444,34 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 			// Now verify the hash
 			hasher, err := highwayhash.New(hashKey)
 			if err != nil {
-				return err
+				return err, false
 			}
 			_, err = hasher.Write(encryptedBuffer.Bytes()[start: start + shardSize])
 			if err != nil {
-				return err
+				return err, false
 			}
-			if bytes.Compare(hasher.Sum(nil), encryptedBuffer.Bytes()[hashOffset + i * 32: hashOffset + (i + 1) * 32]) != 0 {
+
+			matched := bytes.Compare(hasher.Sum(nil), encryptedBuffer.Bytes()[hashOffset + i * 32: hashOffset + (i + 1) * 32]) == 0
+
+			if !matched && runtime.GOARCH == "arm64" {
+				hasher, err := wronghighwayhash.New(hashKey)
+				if err == nil {
+					_, err = hasher.Write(encryptedBuffer.Bytes()[start: start + shardSize])
+					if err == nil {
+						matched = bytes.Compare(hasher.Sum(nil), encryptedBuffer.Bytes()[hashOffset + i * 32: hashOffset + (i + 1) * 32]) == 0
+						if matched && !wrongHashDetected {
+							LOG_WARN("CHUNK_ERASURECODE", "Hash for shard %d was calculated with a wrong version of highwayhash", i)
+							wrongHashDetected = true
+							rewriteNeeded = true
+						}
+					}
+				}
+			}
+
+			if !matched {
 				if i < dataShards {
 					recoveryNeeded = true
+					rewriteNeeded = true
 				}
 			} else {
 				// The shard is good
@@ -463,7 +491,7 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 			encryptedBuffer.Read(encryptedBuffer.Bytes()[:dataOffset])
 		} else {
 			if availableShards < dataShards {
-				return fmt.Errorf("Not enough chunk data for recover; only %d out of %d shards are complete", availableShards, dataShards + parityShards)
+				return fmt.Errorf("Not enough chunk data for recover; only %d out of %d shards are complete", availableShards, dataShards + parityShards), false
 			}
 
 			// Show the validity of shards using a string of * and -
@@ -479,11 +507,11 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 			LOG_WARN("CHUNK_ERASURECODE", "Recovering a %d byte chunk from %d byte shards: %s", chunkSize, shardSize, slots)
 			encoder, err := reedsolomon.New(dataShards, parityShards)
 			if err != nil {
-				return err
+				return err, false
 			}
 			err = encoder.Reconstruct(data)
 			if err != nil {
-				return err
+				return err, false
 			}
 			LOG_DEBUG("CHUNK_ERASURECODE", "Chunk data successfully recovered")
 			buffer := AllocateChunkBuffer()
@@ -516,28 +544,28 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 		}
 
 		if len(encryptedBuffer.Bytes()) < bannerLength + 12 {
-			return fmt.Errorf("No enough encrypted data (%d bytes) provided", len(encryptedBuffer.Bytes()))
+			return fmt.Errorf("No enough encrypted data (%d bytes) provided", len(encryptedBuffer.Bytes())), false
 		}
 
 		if string(encryptedBuffer.Bytes()[:bannerLength-1]) != ENCRYPTION_BANNER[:bannerLength-1] {
-			return fmt.Errorf("The storage doesn't seem to be encrypted")
+			return fmt.Errorf("The storage doesn't seem to be encrypted"), false
 		}
 
 		encryptionVersion := encryptedBuffer.Bytes()[bannerLength-1]
 		if encryptionVersion != 0 && encryptionVersion != ENCRYPTION_VERSION_RSA {
-			return fmt.Errorf("Unsupported encryption version %d", encryptionVersion)
+			return fmt.Errorf("Unsupported encryption version %d", encryptionVersion), false
 		}
 
 		if encryptionVersion == ENCRYPTION_VERSION_RSA {
 			if chunk.config.rsaPrivateKey == nil {
 				LOG_ERROR("CHUNK_DECRYPT", "An RSA private key is required to decrypt the chunk")
-				return fmt.Errorf("An RSA private key is required to decrypt the chunk")
+				return fmt.Errorf("An RSA private key is required to decrypt the chunk"), false
 			}
 
 			encryptedKeyLength := binary.LittleEndian.Uint16(encryptedBuffer.Bytes()[bannerLength:bannerLength+2])
 
 			if len(encryptedBuffer.Bytes()) < bannerLength + 14 + int(encryptedKeyLength) {
-				return fmt.Errorf("No enough encrypted data (%d bytes) provided", len(encryptedBuffer.Bytes()))
+				return fmt.Errorf("No enough encrypted data (%d bytes) provided", len(encryptedBuffer.Bytes())), false
 			}
 
 			encryptedKey := encryptedBuffer.Bytes()[bannerLength + 2:bannerLength + 2 + int(encryptedKeyLength)]
@@ -545,19 +573,19 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 
 			decryptedKey, err := rsa.DecryptOAEP(sha256.New(), rand.Reader, chunk.config.rsaPrivateKey, encryptedKey, nil)
 			if err != nil {
-				return err
+				return err, false
 			}
 			key = decryptedKey
 		}
 
 		aesBlock, err := aes.NewCipher(key)
 		if err != nil {
-			return err
+			return err, false
 		}
 
 		gcm, err := cipher.NewGCM(aesBlock)
 		if err != nil {
-			return err
+			return err, false
 		}
 
 		offset = bannerLength + gcm.NonceSize()
@@ -567,7 +595,7 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 			encryptedBuffer.Bytes()[offset:], nil)
 
 		if err != nil {
-			return err
+			return err, false
 		}
 
 		paddingLength := int(decryptedBytes[len(decryptedBytes)-1])
@@ -575,14 +603,14 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 			paddingLength = 256
 		}
 		if len(decryptedBytes) <= paddingLength {
-			return fmt.Errorf("Incorrect padding length %d out of %d bytes", paddingLength, len(decryptedBytes))
+			return fmt.Errorf("Incorrect padding length %d out of %d bytes", paddingLength, len(decryptedBytes)), false
 		}
 
 		for i := 0; i < paddingLength; i++ {
 			padding := decryptedBytes[len(decryptedBytes)-1-i]
 			if padding != byte(paddingLength) {
 				return fmt.Errorf("Incorrect padding of length %d: %x", paddingLength,
-					decryptedBytes[len(decryptedBytes)-paddingLength:])
+					decryptedBytes[len(decryptedBytes)-paddingLength:]), false
 			}
 		}
 
@@ -596,18 +624,18 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 		chunk.buffer.Reset()
 		decompressed, err := lz4.Decode(chunk.buffer.Bytes(), encryptedBuffer.Bytes()[4:])
 		if err != nil {
-			return err
+			return err, false
 		}
 
 		chunk.buffer.Write(decompressed)
 		chunk.hasher = chunk.config.NewKeyedHasher(chunk.config.HashKey)
 		chunk.hasher.Write(decompressed)
 		chunk.hash = nil
-		return nil
+		return nil, rewriteNeeded
 	}
 	inflater, err := zlib.NewReader(encryptedBuffer)
 	if err != nil {
-		return err
+		return err, false
 	}
 
 	defer inflater.Close()
@@ -617,9 +645,9 @@ func (chunk *Chunk) Decrypt(encryptionKey []byte, derivationKey string) (err err
 	chunk.hash = nil
 
 	if _, err = io.Copy(chunk, inflater); err != nil {
-		return err
+		return err, false
 	}
 
-	return nil
+	return nil, rewriteNeeded
 
 }

src/duplicacy_chunk_test.go

@@ -43,7 +43,7 @@ func TestErasureCoding(t *testing.T) {
 
 	chunk.Reset(false)
 	chunk.Write(encryptedData)
-	err = chunk.Decrypt([]byte(""), "")
+	err, _ = chunk.Decrypt([]byte(""), "")
 	if err != nil {
 		t.Errorf("Failed to decrypt the data: %v", err)
 		return
@@ -110,7 +110,7 @@ func TestChunkBasic(t *testing.T) {
 
 		chunk.Reset(false)
 		chunk.Write(encryptedData)
-		err = chunk.Decrypt(key, "")
+		err, _ = chunk.Decrypt(key, "")
 		if err != nil {
 			t.Errorf("Failed to decrypt the data: %v", err)
 			continue

src/duplicacy_chunkoperator.go

@@ -57,11 +57,14 @@ type ChunkOperator struct {
 	allowFailures bool           // Whether to fail on download error, or continue
 	NumberOfFailedChunks int64   // The number of chunks that can't be downloaded
 
+	rewriteChunks bool           // Whether to rewrite corrupted chunks when erasure coding is enabled
+
 	UploadCompletionFunc func(chunk *Chunk, chunkIndex int, inCache bool, chunkSize int, uploadSize int)
 }
 
 // CreateChunkOperator creates a new ChunkOperator.
-func CreateChunkOperator(config *Config, storage Storage, snapshotCache *FileStorage, showStatistics bool, threads int, allowFailures bool) *ChunkOperator {
+func CreateChunkOperator(config *Config, storage Storage, snapshotCache *FileStorage, showStatistics bool, rewriteChunks bool, threads int,
+						 allowFailures bool) *ChunkOperator {
 
 	operator := &ChunkOperator{
 		config: config,
@@ -76,6 +79,7 @@ func CreateChunkOperator(config *Config, storage Storage, snapshotCache *FileSto
 		collectionLock: &sync.Mutex{},
 		startTime: time.Now().Unix(),
 		allowFailures: allowFailures,
+		rewriteChunks: rewriteChunks,
 	}
 
 	// Start the operator goroutines
@@ -331,24 +335,34 @@ func (operator *ChunkOperator) DownloadChunk(threadIndex int, task ChunkTask) {
 
 		atomic.AddInt64(&operator.NumberOfFailedChunks, 1)
 		if operator.allowFailures {
+			chunk.isBroken = true
 			task.completionFunc(chunk, task.chunkIndex)
 		}
 	}
 
+	chunkPath := ""
+	fossilPath := ""
+	filePath := ""
+
 	const MaxDownloadAttempts = 3
 	for downloadAttempt := 0; ; downloadAttempt++ {
 
+		exist := false
+		var err error
+
 		// Find the chunk by ID first.
-		chunkPath, exist, _, err := operator.storage.FindChunk(threadIndex, chunkID, false)
+		chunkPath, exist, _, err = operator.storage.FindChunk(threadIndex, chunkID, false)
 		if err != nil {
 			completeFailedChunk()
 			LOG_WERROR(operator.allowFailures, "DOWNLOAD_CHUNK", "Failed to find the chunk %s: %v", chunkID, err)
 			return
 		}
 
-		if !exist {
+		if exist {
+			filePath = chunkPath
+		} else {
 			// No chunk is found.  Have to find it in the fossil pool again.
-			fossilPath, exist, _, err := operator.storage.FindChunk(threadIndex, chunkID, true)
+			fossilPath, exist, _, err = operator.storage.FindChunk(threadIndex, chunkID, true)
 			if err != nil {
 				completeFailedChunk()
 				LOG_WERROR(operator.allowFailures, "DOWNLOAD_CHUNK", "Failed to find the chunk %s: %v", chunkID, err)
@@ -383,20 +397,11 @@ func (operator *ChunkOperator) DownloadChunk(threadIndex int, task ChunkTask) {
 				return
 			}
 
-			// We can't download the fossil directly.  We have to turn it back into a regular chunk and try
-			// downloading again.
-			err = operator.storage.MoveFile(threadIndex, fossilPath, chunkPath)
-			if err != nil {
-				completeFailedChunk()
-				LOG_WERROR(operator.allowFailures, "DOWNLOAD_CHUNK", "Failed to resurrect chunk %s: %v", chunkID, err)
-				return
-			}
-
-			LOG_WARN("DOWNLOAD_RESURRECT", "Fossil %s has been resurrected", chunkID)
-			continue
+			filePath = fossilPath
+			LOG_WARN("DOWNLOAD_FOSSIL", "Chunk %s is a fossil", chunkID)
 		}
 
-		err = operator.storage.DownloadFile(threadIndex, chunkPath, chunk)
+		err = operator.storage.DownloadFile(threadIndex, filePath, chunk)
 		if err != nil {
 			_, isHubic := operator.storage.(*HubicStorage)
 			// Retry on EOF or if it is a Hubic backend as it may return 404 even when the chunk exists
@@ -412,7 +417,8 @@ func (operator *ChunkOperator) DownloadChunk(threadIndex int, task ChunkTask) {
 			}
 		}
 
-		err = chunk.Decrypt(operator.config.ChunkKey, task.chunkHash)
+		rewriteNeeded := false
+		err, rewriteNeeded = chunk.Decrypt(operator.config.ChunkKey, task.chunkHash)
 		if err != nil {
 			if downloadAttempt < MaxDownloadAttempts {
 				LOG_WARN("DOWNLOAD_RETRY", "Failed to decrypt the chunk %s: %v; retrying", chunkID, err)
@@ -440,6 +446,38 @@ func (operator *ChunkOperator) DownloadChunk(threadIndex int, task ChunkTask) {
 			}
 		}
 
+		if rewriteNeeded && operator.rewriteChunks {
+
+			if filePath != fossilPath {
+				fossilPath = filePath + ".fsl"
+				err := operator.storage.MoveFile(threadIndex, chunkPath, fossilPath)
+				if err != nil {
+					LOG_WARN("CHUNK_REWRITE", "Failed to fossilize the chunk %s: %v", task.chunkID, err)
+				} else {
+					LOG_TRACE("CHUNK_REWRITE", "The existing chunk %s has been marked as a fossil for rewrite", task.chunkID)
+					operator.collectionLock.Lock()
+					operator.fossils = append(operator.fossils, fossilPath)
+					operator.collectionLock.Unlock()
+				}
+			}
+
+			newChunk := operator.config.GetChunk()
+			newChunk.Reset(true)
+			newChunk.Write(chunk.GetBytes())
+			// Encrypt the chunk only after we know that it must be uploaded.
+			err = newChunk.Encrypt(operator.config.ChunkKey, chunk.GetHash(), task.isMetadata)
+			if err == nil {
+				// Re-upload the chunk
+				err = operator.storage.UploadFile(threadIndex, chunkPath, newChunk.GetBytes())
+				if err != nil {
+					LOG_WARN("CHUNK_REWRITE", "Failed to re-upload the chunk %s: %v", chunkID, err)
+				} else {
+					LOG_INFO("CHUNK_REWRITE", "The chunk %s has been re-uploaded", chunkID)
+				}
+			}
+			operator.config.PutChunk(newChunk)
+		}
+
 		break
 	}
 

src/duplicacy_chunkoperator_test.go

@@ -87,7 +87,7 @@ func TestChunkOperator(t *testing.T) {
 		totalFileSize += chunk.GetLength()
 	}
 
-	chunkOperator := CreateChunkOperator(config, storage, nil, false, *testThreads, false)
+	chunkOperator := CreateChunkOperator(config, storage, nil, false, false, *testThreads, false)
 	chunkOperator.UploadCompletionFunc = func(chunk *Chunk, chunkIndex int, skipped bool, chunkSize int, uploadSize int) {
 		t.Logf("Chunk %s size %d (%d/%d) uploaded", chunk.GetID(), chunkSize, chunkIndex, len(chunks))
 	}

src/duplicacy_config.go

@@ -436,7 +436,7 @@ func DownloadConfig(storage Storage, password string) (config *Config, isEncrypt
 		}
 
 		// Decrypt the config file.  masterKey == nil means no encryption.
-		err = configFile.Decrypt(masterKey, "")
+		err, _ = configFile.Decrypt(masterKey, "")
 		if err != nil {
 			return nil, false, fmt.Errorf("Failed to retrieve the config file: %v", err)
 		}

src/duplicacy_hubicclient_test.go

@@ -1,149 +0,0 @@
-// Copyright (c) Acrosync LLC. All rights reserved.
-// Free for personal use and commercial trial
-// Commercial use requires per-user licenses available from https://duplicacy.com
-
-package duplicacy
-
-import (
-	"crypto/sha256"
-	"encoding/hex"
-	"fmt"
-	"io"
-	"testing"
-
-	crypto_rand "crypto/rand"
-	"math/rand"
-)
-
-func TestHubicClient(t *testing.T) {
-
-	hubicClient, err := NewHubicClient("hubic-token.json")
-	if err != nil {
-		t.Errorf("Failed to create the Hubic client: %v", err)
-		return
-	}
-
-	hubicClient.TestMode = true
-
-	existingFiles, err := hubicClient.ListEntries("")
-	for _, file := range existingFiles {
-		fmt.Printf("name: %s, isDir: %t\n", file.Name, file.Type == "application/directory")
-	}
-
-	testExists, _, _, err := hubicClient.GetFileInfo("test")
-	if err != nil {
-		t.Errorf("Failed to list the test directory: %v", err)
-		return
-	}
-	if !testExists {
-		err = hubicClient.CreateDirectory("test")
-		if err != nil {
-			t.Errorf("Failed to create the test directory: %v", err)
-			return
-		}
-	}
-
-	test1Exists, _, _, err := hubicClient.GetFileInfo("test/test1")
-	if err != nil {
-		t.Errorf("Failed to list the test1 directory: %v", err)
-		return
-	}
-	if !test1Exists {
-		err = hubicClient.CreateDirectory("test/test1")
-		if err != nil {
-			t.Errorf("Failed to create the test1 directory: %v", err)
-			return
-		}
-	}
-
-	test2Exists, _, _, err := hubicClient.GetFileInfo("test/test2")
-	if err != nil {
-		t.Errorf("Failed to list the test2 directory: %v", err)
-		return
-	}
-	if !test2Exists {
-		err = hubicClient.CreateDirectory("test/test2")
-		if err != nil {
-			t.Errorf("Failed to create the test2 directory: %v", err)
-			return
-		}
-	}
-
-	numberOfFiles := 20
-	maxFileSize := 64 * 1024
-
-	for i := 0; i < numberOfFiles; i++ {
-		content := make([]byte, rand.Int()%maxFileSize+1)
-		_, err = crypto_rand.Read(content)
-		if err != nil {
-			t.Errorf("Error generating random content: %v", err)
-			return
-		}
-
-		hasher := sha256.New()
-		hasher.Write(content)
-		filename := hex.EncodeToString(hasher.Sum(nil))
-
-		fmt.Printf("file: %s\n", filename)
-
-		err = hubicClient.UploadFile("test/test1/"+filename, content, 100)
-		if err != nil {
-			/*if e, ok := err.(ACDError); !ok || e.Status != 409 */ {
-				t.Errorf("Failed to upload the file %s: %v", filename, err)
-				return
-			}
-		}
-	}
-
-	entries, err := hubicClient.ListEntries("test/test1")
-	if err != nil {
-		t.Errorf("Error list randomly generated files: %v", err)
-		return
-	}
-
-	for _, entry := range entries {
-
-		exists, isDir, size, err := hubicClient.GetFileInfo("test/test1/" + entry.Name)
-		fmt.Printf("%s exists: %t, isDir: %t, size: %d, err: %v\n", "test/test1/"+entry.Name, exists, isDir, size, err)
-
-		err = hubicClient.MoveFile("test/test1/"+entry.Name, "test/test2/"+entry.Name)
-		if err != nil {
-			t.Errorf("Failed to move %s: %v", entry.Name, err)
-			return
-		}
-	}
-
-	entries, err = hubicClient.ListEntries("test/test2")
-	if err != nil {
-		t.Errorf("Error list randomly generated files: %v", err)
-		return
-	}
-
-	for _, entry := range entries {
-		readCloser, _, err := hubicClient.DownloadFile("test/test2/" + entry.Name)
-		if err != nil {
-			t.Errorf("Error downloading file %s: %v", entry.Name, err)
-			return
-		}
-
-		hasher := sha256.New()
-		io.Copy(hasher, readCloser)
-		hash := hex.EncodeToString(hasher.Sum(nil))
-
-		if hash != entry.Name {
-			t.Errorf("File %s, hash %s", entry.Name, hash)
-		}
-
-		readCloser.Close()
-	}
-
-	for _, entry := range entries {
-
-		err = hubicClient.DeleteFile("test/test2/" + entry.Name)
-		if err != nil {
-			t.Errorf("Failed to delete the file %s: %v", entry.Name, err)
-			return
-		}
-	}
-
-}

src/duplicacy_oneclient_test.go

@@ -1,145 +0,0 @@
-// Copyright (c) Acrosync LLC. All rights reserved.
-// Free for personal use and commercial trial
-// Commercial use requires per-user licenses available from https://duplicacy.com
-
-package duplicacy
-
-import (
-	"crypto/sha256"
-	"encoding/hex"
-	"fmt"
-	"io"
-	"testing"
-
-	crypto_rand "crypto/rand"
-	"math/rand"
-)
-
-func TestOneDriveClient(t *testing.T) {
-
-	oneDriveClient, err := NewOneDriveClient("one-token.json", false)
-	if err != nil {
-		t.Errorf("Failed to create the OneDrive client: %v", err)
-		return
-	}
-
-	oneDriveClient.TestMode = true
-
-	existingFiles, err := oneDriveClient.ListEntries("")
-	for _, file := range existingFiles {
-		fmt.Printf("name: %s, isDir: %t\n", file.Name, len(file.Folder) != 0)
-	}
-
-	testID, _, _, err := oneDriveClient.GetFileInfo("test")
-	if err != nil {
-		t.Errorf("Failed to list the test directory: %v", err)
-		return
-	}
-	if testID == "" {
-		err = oneDriveClient.CreateDirectory("", "test")
-		if err != nil {
-			t.Errorf("Failed to create the test directory: %v", err)
-			return
-		}
-	}
-
-	test1ID, _, _, err := oneDriveClient.GetFileInfo("test/test1")
-	if err != nil {
-		t.Errorf("Failed to list the test1 directory: %v", err)
-		return
-	}
-	if test1ID == "" {
-		err = oneDriveClient.CreateDirectory("test", "test1")
-		if err != nil {
-			t.Errorf("Failed to create the test1 directory: %v", err)
-			return
-		}
-	}
-
-	test2ID, _, _, err := oneDriveClient.GetFileInfo("test/test2")
-	if err != nil {
-		t.Errorf("Failed to list the test2 directory: %v", err)
-		return
-	}
-	if test2ID == "" {
-		err = oneDriveClient.CreateDirectory("test", "test2")
-		if err != nil {
-			t.Errorf("Failed to create the test2 directory: %v", err)
-			return
-		}
-	}
-
-	numberOfFiles := 20
-	maxFileSize := 64 * 1024
-
-	for i := 0; i < numberOfFiles; i++ {
-		content := make([]byte, rand.Int()%maxFileSize+1)
-		_, err = crypto_rand.Read(content)
-		if err != nil {
-			t.Errorf("Error generating random content: %v", err)
-			return
-		}
-
-		hasher := sha256.New()
-		hasher.Write(content)
-		filename := hex.EncodeToString(hasher.Sum(nil))
-
-		fmt.Printf("file: %s\n", filename)
-
-		err = oneDriveClient.UploadFile("test/test1/"+filename, content, 100)
-		if err != nil {
-			/*if e, ok := err.(ACDError); !ok || e.Status != 409 */ {
-				t.Errorf("Failed to upload the file %s: %v", filename, err)
-				return
-			}
-		}
-	}
-
-	entries, err := oneDriveClient.ListEntries("test/test1")
-	if err != nil {
-		t.Errorf("Error list randomly generated files: %v", err)
-		return
-	}
-
-	for _, entry := range entries {
-		err = oneDriveClient.MoveFile("test/test1/"+entry.Name, "test/test2")
-		if err != nil {
-			t.Errorf("Failed to move %s: %v", entry.Name, err)
-			return
-		}
-	}
-
-	entries, err = oneDriveClient.ListEntries("test/test2")
-	if err != nil {
-		t.Errorf("Error list randomly generated files: %v", err)
-		return
-	}
-
-	for _, entry := range entries {
-		readCloser, _, err := oneDriveClient.DownloadFile("test/test2/" + entry.Name)
-		if err != nil {
-			t.Errorf("Error downloading file %s: %v", entry.Name, err)
-			return
-		}
-
-		hasher := sha256.New()
-		io.Copy(hasher, readCloser)
-		hash := hex.EncodeToString(hasher.Sum(nil))
-
-		if hash != entry.Name {
-			t.Errorf("File %s, hash %s", entry.Name, hash)
-		}
-
-		readCloser.Close()
-	}
-
-	for _, entry := range entries {
-
-		err = oneDriveClient.DeleteFile("test/test2/" + entry.Name)
-		if err != nil {
-			t.Errorf("Failed to delete the file %s: %v", entry.Name, err)
-			return
-		}
-	}
-
-}

src/duplicacy_snapshot.go

@@ -15,7 +15,6 @@ import (
 	"strings"
 	"time"
 	"sort"
-	"bytes"
 
     "github.com/vmihailenco/msgpack"
 
@@ -52,6 +51,7 @@ type Snapshot struct {
 // CreateEmptySnapshot creates an empty snapshot.
 func CreateEmptySnapshot(id string) (snapshto *Snapshot) {
 	return &Snapshot{
+		Version:   1,
 		ID:        id,
 		Revision:  0,
 		StartTime: time.Now().Unix(),
@@ -112,22 +112,21 @@ func (snapshot *Snapshot)ListRemoteFiles(config *Config, chunkOperator *ChunkOpe
 	}
 
 	var chunk *Chunk
-	reader := sequenceReader{
-		sequence: snapshot.FileSequence,
-		buffer:   new(bytes.Buffer),
-		refillFunc: func(chunkHash string) []byte {
-			if chunk != nil {
-				config.PutChunk(chunk)
-			}
-			chunk = chunkOperator.Download(chunkHash, 0, true)
-			return chunk.GetBytes()
-		},
-	}
+	reader := NewSequenceReader(snapshot.FileSequence, func(chunkHash string) []byte {
+		if chunk != nil {
+			config.PutChunk(chunk)
+		}
+		chunk = chunkOperator.Download(chunkHash, 0, true)
+		return chunk.GetBytes()
+	})
 
-	if snapshot.Version == 0 {
+	// Normally if Version is 0 then the snapshot is created by CLI v2 but unfortunately CLI 3.0.1 does not set the
+	// version bit correctly when copying old backups.  So we need to check the first byte -- if it is '[' then it is
+	// the old format.  The new format starts with a string encoded in msgpack and the first byte can't be '['.
+	if snapshot.Version == 0 || reader.GetFirstByte() == '['{
 		LOG_INFO("SNAPSHOT_VERSION", "snapshot %s at revision %d is encoded in an old version format", snapshot.ID, snapshot.Revision)
 		files := make([]*Entry, 0)
-		decoder := json.NewDecoder(&reader)
+		decoder := json.NewDecoder(reader)
 
 		// read open bracket
 		_, err := decoder.Token()
@@ -156,7 +155,7 @@ func (snapshot *Snapshot)ListRemoteFiles(config *Config, chunkOperator *ChunkOpe
 			}
 		}
 	} else if snapshot.Version == 1 {
-		decoder := msgpack.NewDecoder(&reader)
+		decoder := msgpack.NewDecoder(reader)
 
 		lastEndChunk := 0
 
@@ -434,7 +433,7 @@ func (snapshot *Snapshot) MarshalJSON() ([]byte, error) {
 
 	object := make(map[string]interface{})
 
-	object["version"] = 1
+	object["version"] = snapshot.Version
 	object["id"] = snapshot.ID
 	object["revision"] = snapshot.Revision
 	object["options"] = snapshot.Options

src/duplicacy_snapshotmanager.go

@@ -249,17 +249,27 @@ func (manager *SnapshotManager) DownloadSnapshot(snapshotID string, revision int
 // the memory before passing them to the json unmarshaller.
 type sequenceReader struct {
 	sequence   []string
-	buffer     *bytes.Buffer
+	buffer     *bytes.Reader
 	index      int
 	refillFunc func(hash string) []byte
 }
 
+func NewSequenceReader(sequence []string, refillFunc func(hash string) []byte) *sequenceReader {
+	newData := refillFunc(sequence[0])
+	return &sequenceReader{
+		sequence:   sequence,
+		buffer:     bytes.NewReader(newData),
+		index:      1,
+		refillFunc: refillFunc,
+	}
+}
+
 // Read reads a new chunk using the refill function when there is no more data in the buffer
 func (reader *sequenceReader) Read(data []byte) (n int, err error) {
-	if len(reader.buffer.Bytes()) == 0 {
+	if reader.buffer.Len() == 0 {
 		if reader.index < len(reader.sequence) {
 			newData := reader.refillFunc(reader.sequence[reader.index])
-			reader.buffer.Write(newData)
+			reader.buffer = bytes.NewReader(newData)
 			reader.index++
 		} else {
 			return 0, io.EOF
@@ -269,15 +279,25 @@ func (reader *sequenceReader) Read(data []byte) (n int, err error) {
 	return reader.buffer.Read(data)
 }
 
-func (manager *SnapshotManager) CreateChunkOperator(resurrect bool, threads int, allowFailures bool) {
+func (reader *sequenceReader) GetFirstByte() byte {
+	b, err := reader.buffer.ReadByte()
+	reader.buffer.UnreadByte()
+	if err != nil {
+		return 0
+	} else {
+		return b
+	}
+}
+
+func (manager *SnapshotManager) CreateChunkOperator(resurrect bool, rewriteChunks bool, threads int, allowFailures bool) {
 	if manager.chunkOperator == nil {
-		manager.chunkOperator = CreateChunkOperator(manager.config, manager.storage, manager.snapshotCache, resurrect, threads, allowFailures)
+		manager.chunkOperator = CreateChunkOperator(manager.config, manager.storage, manager.snapshotCache, resurrect, rewriteChunks, threads, allowFailures)
 	}
 }
 
 // DownloadSequence returns the content represented by a sequence of chunks.
 func (manager *SnapshotManager) DownloadSequence(sequence []string) (content []byte) {
-	manager.CreateChunkOperator(false, 1, false)
+	manager.CreateChunkOperator(false, false, 1, false)
 	for _, chunkHash := range sequence {
 		chunk := manager.chunkOperator.Download(chunkHash, 0, true)
 		content = append(content, chunk.GetBytes()...)
@@ -654,7 +674,7 @@ func (manager *SnapshotManager) ListSnapshots(snapshotID string, revisionsToList
 	LOG_DEBUG("LIST_PARAMETERS", "id: %s, revisions: %v, tag: %s, showFiles: %t, showChunks: %t",
 		snapshotID, revisionsToList, tag, showFiles, showChunks)
 
-	manager.CreateChunkOperator(false, 1, false)
+	manager.CreateChunkOperator(false, false, 1, false)
 	defer func() {
 		manager.chunkOperator.Stop()
 		manager.chunkOperator = nil
@@ -760,9 +780,9 @@ func (manager *SnapshotManager) ListSnapshots(snapshotID string, revisionsToList
 
 // CheckSnapshots checks if there is any problem with a snapshot.
 func (manager *SnapshotManager) CheckSnapshots(snapshotID string, revisionsToCheck []int, tag string, showStatistics bool, showTabular bool,
-	checkFiles bool, checkChunks, searchFossils bool, resurrect bool, threads int, allowFailures bool) bool {
+	checkFiles bool, checkChunks, searchFossils bool, resurrect bool, rewriteChunks bool, threads int, allowFailures bool) bool {
 
-	manager.CreateChunkOperator(resurrect, threads, allowFailures)
+	manager.CreateChunkOperator(resurrect, rewriteChunks, threads, allowFailures)
 	defer func() {
 		manager.chunkOperator.Stop()
 		manager.chunkOperator = nil
@@ -1318,6 +1338,10 @@ func (manager *SnapshotManager) VerifySnapshot(snapshot *Snapshot) bool {
 		LOG_TRACE("SNAPSHOT_VERIFY", "%s", file.Path)
 	}
 
+	if lastChunk != nil {
+		manager.config.PutChunk(lastChunk)
+	}
+
 	if corruptedFiles > 0 {
 		LOG_WARN("SNAPSHOT_VERIFY", "Snapshot %s at revision %d contains %d corrupted files",
 			snapshot.ID, snapshot.Revision, corruptedFiles)
@@ -1336,7 +1360,7 @@ func (manager *SnapshotManager) RetrieveFile(snapshot *Snapshot, file *Entry, la
 		return true
 	}
 
-	manager.CreateChunkOperator(false, 1, false)
+	manager.CreateChunkOperator(false, false, 1, false)
 
 	fileHasher := manager.config.NewFileHasher()
 	alternateHash := false
@@ -1372,6 +1396,11 @@ func (manager *SnapshotManager) RetrieveFile(snapshot *Snapshot, file *Entry, la
 			}
 		}
 
+		if chunk.isBroken {
+			*lastChunk = nil
+			return false
+		}
+
 		output(chunk.GetBytes()[start:end])
 		if alternateHash {
 			fileHasher.Write([]byte(hex.EncodeToString([]byte(hash))))
@@ -1465,7 +1494,7 @@ func (manager *SnapshotManager) Diff(top string, snapshotID string, revisions []
 	LOG_DEBUG("DIFF_PARAMETERS", "top: %s, id: %s, revision: %v, path: %s, compareByHash: %t",
 		top, snapshotID, revisions, filePath, compareByHash)
 
-	manager.CreateChunkOperator(false, 1, false)
+	manager.CreateChunkOperator(false, false, 1, false)
 	defer func() {
 		manager.chunkOperator.Stop()
 		manager.chunkOperator = nil
@@ -1690,7 +1719,7 @@ func (manager *SnapshotManager) ShowHistory(top string, snapshotID string, revis
 	LOG_DEBUG("HISTORY_PARAMETERS", "top: %s, id: %s, revisions: %v, path: %s, showLocalHash: %t",
 		top, snapshotID, revisions, filePath, showLocalHash)
 
-	manager.CreateChunkOperator(false, 1, false)
+	manager.CreateChunkOperator(false, false, 1, false)
 	defer func() {
 		manager.chunkOperator.Stop()
 		manager.chunkOperator = nil
@@ -1818,7 +1847,7 @@ func (manager *SnapshotManager) PruneSnapshots(selfID string, snapshotID string,
 		LOG_WARN("DELETE_OPTIONS", "Tags or retention policy will be ignored if at least one revision is specified")
 	}
 
-	manager.CreateChunkOperator(false, threads, false)
+	manager.CreateChunkOperator(false, false, threads, false)
 	defer func() {
 		manager.chunkOperator.Stop()
 		manager.chunkOperator = nil
@@ -2594,12 +2623,29 @@ func (manager *SnapshotManager) DownloadFile(path string, derivationKey string)
 		derivationKey = derivationKey[len(derivationKey)-64:]
 	}
 
-	err = manager.fileChunk.Decrypt(manager.config.FileKey, derivationKey)
+	err, rewriteNeeded := manager.fileChunk.Decrypt(manager.config.FileKey, derivationKey)
 	if err != nil {
 		LOG_ERROR("DOWNLOAD_DECRYPT", "Failed to decrypt the file %s: %v", path, err)
 		return nil
 	}
 
+	if rewriteNeeded && manager.chunkOperator.rewriteChunks {
+
+		newChunk := manager.config.GetChunk()
+		newChunk.Reset(true)
+		newChunk.Write(manager.fileChunk.GetBytes())
+		err = newChunk.Encrypt(manager.config.FileKey, derivationKey, true)
+		if err == nil {
+			err = manager.storage.UploadFile(0, path, newChunk.GetBytes())
+			if err != nil {
+				LOG_WARN("DOWNLOAD_REWRITE", "Failed to re-uploaded the file %s: %v", path, err)
+			} else{
+				LOG_INFO("DOWNLOAD_REWRITE", "The file %s has been re-uploaded", path)
+			}
+		}
+		manager.config.PutChunk(newChunk)
+	}
+
 	err = manager.snapshotCache.UploadFile(0, path, manager.fileChunk.GetBytes())
 	if err != nil {
 		LOG_WARN("DOWNLOAD_FILE_CACHE", "Failed to add the file %s to the snapshot cache: %v", path, err)

src/duplicacy_snapshotmanager_test.go

@@ -116,7 +116,7 @@ func createTestSnapshotManager(testDir string) *SnapshotManager {
 
 func uploadTestChunk(manager *SnapshotManager, content []byte) string {
 
-	chunkOperator := CreateChunkOperator(manager.config, manager.storage, nil, false, *testThreads, false)
+	chunkOperator := CreateChunkOperator(manager.config, manager.storage, nil, false, false, *testThreads, false)
 	chunkOperator.UploadCompletionFunc = func(chunk *Chunk, chunkIndex int, skipped bool, chunkSize int, uploadSize int) {
 		LOG_INFO("UPLOAD_CHUNK", "Chunk %s size %d uploaded", chunk.GetID(), chunkSize)
 	}
@@ -179,7 +179,7 @@ func createTestSnapshot(manager *SnapshotManager, snapshotID string, revision in
 
 func checkTestSnapshots(manager *SnapshotManager, expectedSnapshots int, expectedFossils int) {
 
-	manager.CreateChunkOperator(false, 1, false)
+	manager.CreateChunkOperator(false, false, 1, false)
 	defer func() {
 		manager.chunkOperator.Stop()
 		manager.chunkOperator = nil
@@ -625,7 +625,7 @@ func TestPruneNewSnapshots(t *testing.T) {
 	// Now chunkHash1 wil be resurrected
 	snapshotManager.PruneSnapshots("vm1@host1", "vm1@host1", []int{}, []string{}, []string{}, false, false, []string{}, false, false, false, 1)
 	checkTestSnapshots(snapshotManager, 4, 0)
-	snapshotManager.CheckSnapshots("vm1@host1", []int{2, 3}, "", false, false, false, false, false, false, 1, false)
+	snapshotManager.CheckSnapshots("vm1@host1", []int{2, 3}, "", false, false, false, false, false, false, false, 1, false)
 }
 
 // A fossil collection left by an aborted prune should be ignored if any supposedly deleted snapshot exists
@@ -674,7 +674,7 @@ func TestPruneGhostSnapshots(t *testing.T) {
 	// Run the prune again but the fossil collection should be igored, since revision 1 still exists
 	snapshotManager.PruneSnapshots("vm1@host1", "vm1@host1", []int{}, []string{}, []string{}, false, false, []string{}, false, false, false, 1)
 	checkTestSnapshots(snapshotManager, 3, 2)
-	snapshotManager.CheckSnapshots("vm1@host1", []int{1, 2, 3}, "", false, false, false, false, true /*searchFossils*/, false, 1, false)
+	snapshotManager.CheckSnapshots("vm1@host1", []int{1, 2, 3}, "", false, false, false, false, true /*searchFossils*/, false, false, 1, false)
 
 	// Prune snapshot 1 again
 	snapshotManager.PruneSnapshots("vm1@host1", "vm1@host1", []int{1}, []string{}, []string{}, false, false, []string{}, false, false, false, 1)
@@ -688,5 +688,5 @@ func TestPruneGhostSnapshots(t *testing.T) {
 	// Run the prune again and this time the fossil collection will be processed and the fossils removed
 	snapshotManager.PruneSnapshots("vm1@host1", "vm1@host1", []int{}, []string{}, []string{}, false, false, []string{}, false, false, false, 1)
 	checkTestSnapshots(snapshotManager, 3, 0)
-	snapshotManager.CheckSnapshots("vm1@host1", []int{2, 3, 4}, "", false, false, false, false, false, false, 1, false)
+	snapshotManager.CheckSnapshots("vm1@host1", []int{2, 3, 4}, "", false, false, false, false, false, false, false, 1, false)
 }