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lib/fs: Be even more strict about Windows names (ref #7008) (#7012)

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Things like nul.whatever.txt are also not allowed.
This commit is contained in:
Jakob Borg
2020-09-28 10:42:37 +02:00
committed by GitHub
parent 9e0b924d57
commit e6b1f67ecf
2 changed files with 48 additions and 13 deletions
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lib/fs/util.go
+22 -13
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@@ -44,13 +44,19 @@ func getHomeDir() (string, error) {
return os.UserHomeDir()
}
var windowsDisallowedCharacters = string([]rune{
'<', '>', ':', '"', '|', '?', '*',
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
31,
})
var (
windowsDisallowedCharacters = string([]rune{
'<', '>', ':', '"', '|', '?', '*',
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
31,
})
windowsDisallowedNames = []string{"CON", "PRN", "AUX", "NUL",
"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
}
)
func WindowsInvalidFilename(name string) error {
// None of the path components should end in space or period, or be a
@@ -65,12 +71,15 @@ func WindowsInvalidFilename(name string) error {
// Names ending in space or period are not valid.
return errInvalidFilenameWindowsSpacePeriod
}
switch strings.ToUpper(part) {
case "CON", "PRN", "AUX", "NUL",
"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9":
// These reserved names are not valid.
return errInvalidFilenameWindowsReservedName
upperCased := strings.ToUpper(part)
for _, disallowed := range windowsDisallowedNames {
if upperCased == disallowed {
return errInvalidFilenameWindowsReservedName
}
if strings.HasPrefix(upperCased, disallowed+".") {
// nul.txt.jpg is also disallowed
return errInvalidFilenameWindowsReservedName
}
}
}