s1d3sw1ped/bambu-nfc
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Make Parse take raw NFC UID and 1K image.

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Drop zip/JSON from the root API. dump remains an adapter for the Android app format; inventory and an AMS wand both call Parse(uid, image).
This commit is contained in:
Justin Harms
2026-08-23 15:27:11 -05:00
parent b38f7f643b
commit b67b37dc59
7 changed files with 110 additions and 169 deletions
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parse_test.go
+50 -55
View File
@@ -1,33 +1,51 @@
package bambunfc
import (
"bytes"
"encoding/hex"
"errors"
"os"
"path/filepath"
"testing"
"git.s1d3sw1ped.com/s1d3sw1ped/bambu-nfc/dump"
)
func TestParseZipFixtures(t *testing.T) {
func loadRaw(t *testing.T, uidHex string) (uid, image []byte) {
t.Helper()
var err error
uid, err = hex.DecodeString(uidHex)
if err != nil {
t.Fatal(err)
}
image, err = os.ReadFile(filepath.Join("testdata", "dumps", uidHex+".bin"))
if err != nil {
t.Fatal(err)
}
return uid, image
}
func parseFile(t *testing.T, uidHex string) Tag {
t.Helper()
uid, image := loadRaw(t, uidHex)
tag, err := Parse(uid, image)
if err != nil {
t.Fatal(err)
}
return tag
}
func TestParseRawFixtures(t *testing.T) {
t.Parallel()
f, err := os.Open("testdata/dumps.zip")
if err != nil {
t.Fatal(err)
}
defer f.Close()
tags, err := ParseZip(f)
if err != nil {
t.Fatal(err)
}
if len(tags) != 6 {
t.Fatalf("len(tags) = %d; want 6", len(tags))
uids := []string{
"e27be276", "52d60177", "92a80577", "b2d32177", "92b6fb31", "f28c58ed",
}
var translucent, basic int
for _, tag := range tags {
for _, id := range uids {
tag := parseFile(t, id)
if tag.Brand != BrandBambuLab {
t.Errorf("chip %s brand %q", tag.ChipUID, tag.Brand)
}
if tag.ChipUID != id {
t.Errorf("chip UID %q; want %q", tag.ChipUID, id)
}
if tag.DiameterMM != 1.75 {
t.Errorf("chip %s diameter %v", tag.ChipUID, tag.DiameterMM)
}
@@ -49,53 +67,30 @@ func TestParseZipFixtures(t *testing.T) {
if translucent != 4 || basic != 2 {
t.Errorf("translucent=%d basic=%d", translucent, basic)
}
a := parseFile(t, "e27be276")
if a.TrayUID != "2fb8e0e972084e74bf737393b28e7b12" {
t.Errorf("TrayUID = %s", a.TrayUID)
}
}
func TestParseImageErrors(t *testing.T) {
func TestParseErrors(t *testing.T) {
t.Parallel()
raw, err := os.ReadFile("testdata/dumps/e27be276.bin")
if err != nil {
t.Fatal(err)
}
if _, err := ParseImage("e27be276", raw[:1023], nil); !errors.Is(err, ErrImageSize) {
uid, image := loadRaw(t, "e27be276")
if _, err := Parse(uid, image[:1023]); !errors.Is(err, ErrImageSize) {
t.Errorf("short image err = %v; want ErrImageSize", err)
}
if _, err := ParseImage("e27be276", raw, []int{2}); !errors.Is(err, ErrIncomplete) {
t.Errorf("fail sector 2 err = %v; want ErrIncomplete", err)
}
blank := make([]byte, 1024)
if _, err := ParseImage("e27be276", blank, nil); !errors.Is(err, ErrNotBambu) {
if _, err := Parse(uid, blank); !errors.Is(err, ErrNotBambu) {
t.Errorf("blank image err = %v; want ErrNotBambu", err)
}
}
if _, err := Parse(nil, image); !errors.Is(err, ErrUID) {
t.Errorf("empty uid err = %v; want ErrUID", err)
}
func TestParseDumpJSON(t *testing.T) {
t.Parallel()
f, err := os.Open("testdata/dumps/e27be276.json")
if err != nil {
t.Fatal(err)
}
defer f.Close()
d, err := dump.ParseJSON(f)
if err != nil {
t.Fatal(err)
}
tag, err := ParseDump(d)
if err != nil {
t.Fatal(err)
}
if tag.TrayUID != "2fb8e0e972084e74bf737393b28e7b12" {
t.Errorf("TrayUID = %s", tag.TrayUID)
}
if tag.ChipUID != "e27be276" {
t.Errorf("ChipUID = %s", tag.ChipUID)
}
}
func TestParseImageEmptyUID(t *testing.T) {
t.Parallel()
_, err := ParseImage("", bytes.Repeat([]byte{1}, 1024), nil)
if !errors.Is(err, ErrUID) {
t.Errorf("err = %v; want ErrUID", err)
noTray := append([]byte(nil), image...)
copy(noTray[9*16:10*16], make([]byte, 16))
if _, err := Parse(uid, noTray); !errors.Is(err, ErrIncomplete) {
t.Errorf("zero tray err = %v; want ErrIncomplete", err)
}
}