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author | Aqua-sama <aqua@iserlohn-fortress.net> | 2018-09-11 02:06:31 +0200 |
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committer | Aqua-sama <aqua@iserlohn-fortress.net> | 2018-09-11 02:06:31 +0200 |
commit | a3d5c49e061d7b022271ea2be374e929ff385c60 (patch) | |
tree | a3346c813f8c8a39cfd825f3642dece46eca13f1 /tools/updater/manifest.go | |
parent | WebProfile: save httpCacheType and persistentCookiesPolicy (diff) | |
download | smolbote-a3d5c49e061d7b022271ea2be374e929ff385c60.tar.xz |
Update golang updater tool
Diffstat (limited to 'tools/updater/manifest.go')
-rw-r--r-- | tools/updater/manifest.go | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tools/updater/manifest.go b/tools/updater/manifest.go new file mode 100644 index 0000000..942a5e7 --- /dev/null +++ b/tools/updater/manifest.go @@ -0,0 +1,41 @@ +package main + +import ( + "crypto/sha512" + "os" + "io" + "fmt" +) + +func checkFile(filepath string, checksum string) (bool, error) { + if _, err := os.Stat(filepath); os.IsNotExist(err) { + return false, nil + } + + // file exists, check checksum + lsum, err := hash(filepath) + if err != nil { + return false, err + } + + if checksum != fmt.Sprintf("%x", lsum) { + return false, nil + } + + return true, nil +} + +func hash(filepath string) ([]byte, error) { + file, err := os.Open(filepath) + if err != nil { + return nil, err + } + defer file.Close() + + hasher := sha512.New() + if _, err := io.Copy(hasher, file); err != nil { + return nil, err + } + + return hasher.Sum(nil), nil +} |