unkinben
35719984e6
Removes the committed .rpm binary (gitignored, so it broke clean checkouts) and the rpmbuild dependency. testsupport.MinimalRPM builds a valid-enough RPM header in-memory for cavaliergopher/rpm to parse, used by both the rpm provider test and the full-stack server repodata test.
60 lines
2.1 KiB
Go
60 lines
2.1 KiB
Go
package testsupport
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import (
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"bytes"
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"encoding/binary"
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)
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// MinimalRPM builds a valid-enough RPM package in pure Go (no committed binary
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// fixture, no external rpmbuild). It carries just the header tags the provider
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// reads: name/version/release/arch plus a single self Provides entry, which is
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// enough for cavaliergopher/rpm to parse and for repodata generation.
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func MinimalRPM(name, version, release, arch string) []byte {
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type tag struct {
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id, typ, count uint32
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data []byte
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}
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cstr := func(s string) []byte { return append([]byte(s), 0) }
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tags := []tag{
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{1000, 6, 1, cstr(name)}, // RPMTAG_NAME (STRING)
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{1001, 6, 1, cstr(version)}, // RPMTAG_VERSION
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{1002, 6, 1, cstr(release)}, // RPMTAG_RELEASE
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{1022, 6, 1, cstr(arch)}, // RPMTAG_ARCH
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{1047, 8, 1, cstr(name)}, // RPMTAG_PROVIDENAME (STRING_ARRAY)
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{1112, 4, 1, []byte{0, 0, 0, 0}}, // RPMTAG_PROVIDEFLAGS (INT32)
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{1113, 8, 1, cstr(version)}, // RPMTAG_PROVIDEVERSION (STRING_ARRAY)
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}
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buildHeader := func(entries []tag) []byte {
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var index, store bytes.Buffer
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for _, e := range entries {
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off := uint32(store.Len())
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for _, v := range []uint32{e.id, e.typ, off, e.count} {
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binary.Write(&index, binary.BigEndian, v)
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}
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store.Write(e.data)
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}
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var b bytes.Buffer
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b.Write([]byte{0x8e, 0xad, 0xe8, 0x01, 0, 0, 0, 0}) // header magic + reserved
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binary.Write(&b, binary.BigEndian, uint32(len(entries)))
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binary.Write(&b, binary.BigEndian, uint32(store.Len()))
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b.Write(index.Bytes())
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b.Write(store.Bytes())
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return b.Bytes()
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}
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lead := make([]byte, 96)
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copy(lead[0:4], []byte{0xed, 0xab, 0xee, 0xdb}) // lead magic
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lead[4] = 3 // major version
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binary.BigEndian.PutUint16(lead[8:10], 1) // archnum
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copy(lead[10:76], name) // name (66 bytes, null-padded)
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binary.BigEndian.PutUint16(lead[76:78], 1) // osnum
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binary.BigEndian.PutUint16(lead[78:80], 5) // signature type
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var out bytes.Buffer
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out.Write(lead)
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out.Write(buildHeader(nil)) // empty signature header (16 bytes, 8-aligned)
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out.Write(buildHeader(tags))
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return out.Bytes()
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}
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