121 lines
5.3 KiB
Python
121 lines
5.3 KiB
Python
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# -*- coding: utf-8 -*-
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"""Independent end-to-end check of the delivered .face.
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Nothing here trusts the build script's bookkeeping: the Lua table is parsed out of
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the face and every offset is validated against the *firmware images* (stock and
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patched) and the ui_images directory.
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"""
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import os, re, sys, json, hashlib, struct
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sys.stdout.reconfigure(encoding='utf-8', errors='replace')
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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from romfs import Romfs
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from paths import PROJ, INPUTS, WORK, DIST
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WF = PROJ
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NEW = os.path.join(INPUTS, 'target')
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PAT = os.path.join(WORK, 's5e_from_os4')
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FACE = os.path.join(DIST, 'S5eIcons.face')
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IMAGES = {'app': ('vela_app.bin', 'vela_app_os4.bin'), 'health': ('vela_health.bin', 'vela_health_os4.bin')}
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MANIFEST = os.path.join(PAT, 'manifest.json')
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face = open(FACE, 'rb').read()
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# 直接从 .face 里把 Lua 抠出来校验（不依赖构建目录）
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_end = face.find(b'return ui\n')
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if _end < 0:
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raise SystemExit('face 里找不到 Lua 结尾')
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_start = face.rfind(b'--[[', 0, _end)
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lua = face[_start:_end + len(b'return ui\n')]
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if not lua.startswith(b'--[[--') or b'local UIIMG = {' not in lua:
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raise SystemExit('Lua 提取失败：%r ... %r' % (lua[:24], lua[-24:]))
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fails = []
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def ck(cond, msg):
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print((' OK ' if cond else ' FAIL ') + msg)
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if not cond:
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fails.append(msg)
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print('== 头部 ==')
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ck(face[0:4] == b'\x5a\xa5\x34\x12', 'magic 5a a5 34 12')
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ck(face[40:50] == b'462150101\x00', 'id = %r' % face[40:50])
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ck(face[5] == 0, 'b5 = %d（固件自带表盘 b5 也是 0）' % face[5])
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a16, = struct.unpack('<I', face[16:20])
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a32, = struct.unpack('<I', face[32:36])
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print(' info @16=%d @32=0x%x 文件 %d B' % (a16, a32, len(face)))
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print('== 预览块 ==')
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pal, pw, ph, psz = struct.unpack('<IHHI', face[a32:a32 + 12])
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ck(pw == 326 and ph == 326, 'preview %dx%d（Compiler.exe 对 462 设备强制 326x326）' % (pw, ph))
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ck(a32 + 12 + psz <= len(face) + 1,
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'preview 数据 %d B @0x%x（文件尾 0x%x）' % (psz, a32 + 12, len(face)))
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print('== Lua 源码 ==')
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ck(face.count(lua) == 1, 'Lua 源码原样出现 %d 次（%d B）' % (face.count(lua), len(lua)))
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off_lua = face.find(lua)
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ck(off_lua > 0, 'Lua 偏移 0x%x' % off_lua)
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txt = lua.decode('utf-8')
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print('== UI 图片（从 .face 里的 Lua 表读出来校验）==')
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ui = re.findall(r'\{ (\d+), (\d+), "([a-z_]+)" \}', txt)
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ck(len(ui) == 8, 'UIIMG 条目 %d 条' % len(ui))
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files = {f[:-4]: open(os.path.join(WF, 'ui_images', f), 'rb').read()
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for f in os.listdir(os.path.join(WF, 'ui_images')) if f.endswith('.bin')}
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for o, l, n in ui:
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o, l = int(o), int(l)
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ck(n in files and face[o:o + l] == files[n], '%(n)-12s @0x%(o)06x len=%(l)d 与 ui_images/%(n)s.bin 一致' % dict(n=n, o=o, l=l))
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print('== 负载表 ==')
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pay = re.findall(r'\{ "(app|health)", 0x([0-9a-f]+), (\d+), (\d+) \}', txt)
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blocks = re.findall(r'^ (pay|rb) = \{', txt, re.M)
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ck(blocks == ['pay', 'rb'], 'pay / rb 两个表都在')
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half = len(pay) // 2
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exp = json.load(open(MANIFEST, encoding='utf-8'))['records']
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ck(half == len(exp) and len(pay) == 2 * len(exp),
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'pay %d 条 + rb %d 条（manifest 里 %d 条）' % (half, len(pay) - half, len(exp)))
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pay_recs = [dict(dev=d, off=int(o, 16), ln=int(l), res=int(r)) for d, o, l, r in pay[:half]]
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rb_recs = [dict(dev=d, off=int(o, 16), ln=int(l), res=int(r)) for d, o, l, r in pay[half:]]
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stock, patched, sizes = {}, {}, {}
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for dev, (sf, pf) in IMAGES.items():
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rs, rp = Romfs(os.path.join(NEW, sf)), Romfs(os.path.join(PAT, pf))
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stock[dev] = rs.data
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patched[dev] = rp.data
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sizes[dev] = rs.sb_size
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bad = 0
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for i, (p, r) in enumerate(zip(pay_recs, rb_recs)):
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assert p['dev'] == r['dev'] and p['off'] == r['off'] and p['ln'] == r['ln'], 'record %d 表错位' % i
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d, o, l = p['dev'], p['off'], p['ln']
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ok = (face[p['res']:p['res'] + l] == patched[d][o:o + l] and
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face[r['res']:r['res'] + l] == stock[d][o:o + l] and
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o % 4 == 0 and o + l <= sizes[d] and # RLE 素材的长度可以是任意值，只要偏移对齐
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len(face[p['res']:p['res'] + l]) == l and len(face[r['res']:r['res'] + l]) == l)
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if not ok:
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bad += 1
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print(' FAIL %-22s %s off=0x%x len=%d' % (d, p['dev'], o, l))
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ck(bad == 0, '%d 条：负载字节 == 改后镜像，回滚字节 == 原厂镜像，且都 4 对齐、不越界' % half)
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devs = {}
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for p in pay_recs:
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devs[p['dev']] = devs.get(p['dev'], 0) + 1
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exp_devs = {}
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for r in exp:
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exp_devs[r['dev']] = exp_devs.get(r['dev'], 0) + 1
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ck(devs == exp_devs, '分区分布 %s（manifest %s）' % (devs, exp_devs))
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print('== 负载文件在 .face 里连续存放 ==')
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pbin = open(os.path.join(WF, 'payload', 'payload.bin'), 'rb').read()
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rbin = open(os.path.join(WF, 'payload_rollback', 'rollback.bin'), 'rb').read()
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ck(face.count(pbin) == 1 and face.count(rbin) == 1,
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'payload %d B / rollback %d B 各出现 1 次' % (len(pbin), len(rbin)))
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rel = sorted(x['res'] - (face.find(pbin) + 15) for x in pay_recs)
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ck(rel[0] == 0, '第一条负载相对偏移为 0')
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ck(face[pay_recs[0]['res'] - 15:pay_recs[0]['res']] == pbin[:15], 'magic 紧贴第一条负载')
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print()
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if fails:
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print('!! %d 项未通过' % len(fails))
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sys.exit(1)
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print('全部通过 —— %s (%d B, sha256 %s)' % (os.path.basename(FACE), len(face),
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hashlib.sha256(face).hexdigest()[:16]))
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