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pkg: get GoVersion by buildinfo package from ELF (by golang compiled) (#262) #295

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merged 1 commit into from
Jan 17, 2023
Merged

pkg: get GoVersion by buildinfo package from ELF (by golang compiled) (#262) #295

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38 changes: 6 additions & 32 deletions pkg/proc/proc.go
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Original file line number Diff line number Diff line change
@@ -1,8 +1,7 @@
package proc

import (
"debug/dwarf"
"debug/elf"
"debug/buildinfo"
"errors"
"strconv"
"strings"
Expand Down Expand Up @@ -34,40 +33,15 @@ func (v *GoVersion) After(major, minor int) bool {

// ExtraceGoVersion extracts Go version info from a binary that is built with Go toolchain
func ExtraceGoVersion(path string) (*GoVersion, error) {
file, err := elf.Open(path)
if err != nil {
return nil, err
bi, e := buildinfo.ReadFile(path)
if e != nil {
return nil, ErrVersionNotFound
}
defer file.Close()

raw, err := file.DWARF()
gv, err := parseGoVersion(bi.GoVersion)
if err != nil {
return nil, err
}

reader := raw.Reader()
for {
entry, err := reader.Next()
if err != nil {
return nil, err
}

if entry == nil {
break
}

for _, field := range entry.Field {
if field.Attr == dwarf.AttrProducer {
val, ok := field.Val.(string)
if !ok {
continue
}
return parseGoVersion(val)
}
}
}

return nil, ErrVersionNotFound
return gv, nil
}

func parseGoVersion(r string) (*GoVersion, error) {
Expand Down