41 lines
1007 B
Go
41 lines
1007 B
Go
package wine
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import (
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"debug/elf"
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"path/filepath"
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"time"
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)
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// InstalledVersion reads the selected helper's embedded release without
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// executing Wine. Older helpers without the metadata return an empty string.
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// This describes the files on disk, which may differ from a running helper.
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func InstalledVersion() string {
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helper := helperPath()
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if helper == "" {
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return ""
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}
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// Resolve launcher symlinks before locating its adjacent Winelib sidecar.
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helper, err := filepath.EvalSymlinks(helper)
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if err != nil {
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return ""
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}
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file, err := elf.Open(helper + ".so")
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if err != nil {
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return ""
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}
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defer file.Close()
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section := file.Section(".wine_access.version")
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if section == nil || section.Size != 11 || section.Flags&elf.SHF_COMPRESSED != 0 {
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return ""
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}
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var data [11]byte
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if _, err := section.ReadAt(data[:], 0); err != nil || data[10] != 0 {
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return ""
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}
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release := string(data[:10])
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if _, err := time.Parse("2006.01.02", release); err != nil {
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return ""
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}
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return release
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}
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