common.py revision 43874f8c864972b9dae7e4927aa347455b774c94
1# Copyright (C) 2008 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15import getopt 16import getpass 17import os 18import re 19import shutil 20import subprocess 21import sys 22import tempfile 23 24# missing in Python 2.4 and before 25if not hasattr(os, "SEEK_SET"): 26 os.SEEK_SET = 0 27 28class Options(object): pass 29OPTIONS = Options() 30OPTIONS.signapk_jar = "out/host/linux-x86/framework/signapk.jar" 31OPTIONS.dumpkey_jar = "out/host/linux-x86/framework/dumpkey.jar" 32OPTIONS.max_image_size = {} 33OPTIONS.verbose = False 34OPTIONS.tempfiles = [] 35 36 37class ExternalError(RuntimeError): pass 38 39 40def Run(args, **kwargs): 41 """Create and return a subprocess.Popen object, printing the command 42 line on the terminal if -v was specified.""" 43 if OPTIONS.verbose: 44 print " running: ", " ".join(args) 45 return subprocess.Popen(args, **kwargs) 46 47 48def LoadBoardConfig(fn): 49 """Parse a board_config.mk file looking for lines that specify the 50 maximum size of various images, and parse them into the 51 OPTIONS.max_image_size dict.""" 52 OPTIONS.max_image_size = {} 53 for line in open(fn): 54 line = line.strip() 55 m = re.match(r"BOARD_(BOOT|RECOVERY|SYSTEM|USERDATA)IMAGE_MAX_SIZE" 56 r"\s*:=\s*(\d+)", line) 57 if not m: continue 58 59 OPTIONS.max_image_size[m.group(1).lower() + ".img"] = int(m.group(2)) 60 61 62def BuildAndAddBootableImage(sourcedir, targetname, output_zip): 63 """Take a kernel, cmdline, and ramdisk directory from the input (in 64 'sourcedir'), and turn them into a boot image. Put the boot image 65 into the output zip file under the name 'targetname'.""" 66 67 print "creating %s..." % (targetname,) 68 69 img = BuildBootableImage(sourcedir) 70 71 CheckSize(img, targetname) 72 output_zip.writestr(targetname, img) 73 74def BuildBootableImage(sourcedir): 75 """Take a kernel, cmdline, and ramdisk directory from the input (in 76 'sourcedir'), and turn them into a boot image. Return the image data.""" 77 78 ramdisk_img = tempfile.NamedTemporaryFile() 79 img = tempfile.NamedTemporaryFile() 80 81 p1 = Run(["mkbootfs", os.path.join(sourcedir, "RAMDISK")], 82 stdout=subprocess.PIPE) 83 p2 = Run(["gzip", "-n"], stdin=p1.stdout, stdout=ramdisk_img.file.fileno()) 84 85 p2.wait() 86 p1.wait() 87 assert p1.returncode == 0, "mkbootfs of %s ramdisk failed" % (targetname,) 88 assert p2.returncode == 0, "gzip of %s ramdisk failed" % (targetname,) 89 90 cmdline = open(os.path.join(sourcedir, "cmdline")).read().rstrip("\n") 91 p = Run(["mkbootimg", 92 "--kernel", os.path.join(sourcedir, "kernel"), 93 "--cmdline", cmdline, 94 "--ramdisk", ramdisk_img.name, 95 "--output", img.name], 96 stdout=subprocess.PIPE) 97 p.communicate() 98 assert p.returncode == 0, "mkbootimg of %s image failed" % (targetname,) 99 100 img.seek(os.SEEK_SET, 0) 101 data = img.read() 102 103 ramdisk_img.close() 104 img.close() 105 106 return data 107 108 109def AddRecovery(output_zip): 110 BuildAndAddBootableImage(os.path.join(OPTIONS.input_tmp, "RECOVERY"), 111 "recovery.img", output_zip) 112 113def AddBoot(output_zip): 114 BuildAndAddBootableImage(os.path.join(OPTIONS.input_tmp, "BOOT"), 115 "boot.img", output_zip) 116 117def UnzipTemp(filename): 118 """Unzip the given archive into a temporary directory and return the name.""" 119 120 tmp = tempfile.mkdtemp(prefix="targetfiles-") 121 OPTIONS.tempfiles.append(tmp) 122 p = Run(["unzip", "-q", filename, "-d", tmp], stdout=subprocess.PIPE) 123 p.communicate() 124 if p.returncode != 0: 125 raise ExternalError("failed to unzip input target-files \"%s\"" % 126 (filename,)) 127 return tmp 128 129 130def GetKeyPasswords(keylist): 131 """Given a list of keys, prompt the user to enter passwords for 132 those which require them. Return a {key: password} dict. password 133 will be None if the key has no password.""" 134 135 key_passwords = {} 136 devnull = open("/dev/null", "w+b") 137 for k in sorted(keylist): 138 # An empty-string key is used to mean don't re-sign this package. 139 # Obviously we don't need a password for this non-key. 140 if not k: 141 key_passwords[k] = None 142 continue 143 144 p = subprocess.Popen(["openssl", "pkcs8", "-in", k+".pk8", 145 "-inform", "DER", "-nocrypt"], 146 stdin=devnull.fileno(), 147 stdout=devnull.fileno(), 148 stderr=subprocess.STDOUT) 149 p.communicate() 150 if p.returncode == 0: 151 print "%s.pk8 does not require a password" % (k,) 152 key_passwords[k] = None 153 else: 154 key_passwords[k] = getpass.getpass("Enter password for %s.pk8> " % (k,)) 155 devnull.close() 156 print 157 return key_passwords 158 159 160def SignFile(input_name, output_name, key, password, align=None): 161 """Sign the input_name zip/jar/apk, producing output_name. Use the 162 given key and password (the latter may be None if the key does not 163 have a password. 164 165 If align is an integer > 1, zipalign is run to align stored files in 166 the output zip on 'align'-byte boundaries. 167 """ 168 if align == 0 or align == 1: 169 align = None 170 171 if align: 172 temp = tempfile.NamedTemporaryFile() 173 sign_name = temp.name 174 else: 175 sign_name = output_name 176 177 p = subprocess.Popen(["java", "-jar", OPTIONS.signapk_jar, 178 key + ".x509.pem", 179 key + ".pk8", 180 input_name, sign_name], 181 stdin=subprocess.PIPE, 182 stdout=subprocess.PIPE) 183 if password is not None: 184 password += "\n" 185 p.communicate(password) 186 if p.returncode != 0: 187 raise ExternalError("signapk.jar failed: return code %s" % (p.returncode,)) 188 189 if align: 190 p = subprocess.Popen(["zipalign", "-f", str(align), sign_name, output_name]) 191 p.communicate() 192 if p.returncode != 0: 193 raise ExternalError("zipalign failed: return code %s" % (p.returncode,)) 194 temp.close() 195 196 197def CheckSize(data, target): 198 """Check the data string passed against the max size limit, if 199 any, for the given target. Raise exception if the data is too big. 200 Print a warning if the data is nearing the maximum size.""" 201 limit = OPTIONS.max_image_size.get(target, None) 202 if limit is None: return 203 204 size = len(data) 205 pct = float(size) * 100.0 / limit 206 msg = "%s size (%d) is %.2f%% of limit (%d)" % (target, size, pct, limit) 207 if pct >= 99.0: 208 raise ExternalError(msg) 209 elif pct >= 95.0: 210 print 211 print " WARNING: ", msg 212 print 213 elif OPTIONS.verbose: 214 print " ", msg 215 216 217COMMON_DOCSTRING = """ 218 -p (--path) <dir> 219 Prepend <dir> to the list of places to search for binaries run 220 by this script. 221 222 -v (--verbose) 223 Show command lines being executed. 224 225 -h (--help) 226 Display this usage message and exit. 227""" 228 229def Usage(docstring): 230 print docstring.rstrip("\n") 231 print COMMON_DOCSTRING 232 233 234def ParseOptions(argv, 235 docstring, 236 extra_opts="", extra_long_opts=(), 237 extra_option_handler=None): 238 """Parse the options in argv and return any arguments that aren't 239 flags. docstring is the calling module's docstring, to be displayed 240 for errors and -h. extra_opts and extra_long_opts are for flags 241 defined by the caller, which are processed by passing them to 242 extra_option_handler.""" 243 244 try: 245 opts, args = getopt.getopt( 246 argv, "hvp:" + extra_opts, 247 ["help", "verbose", "path="] + list(extra_long_opts)) 248 except getopt.GetoptError, err: 249 Usage(docstring) 250 print "**", str(err), "**" 251 sys.exit(2) 252 253 path_specified = False 254 255 for o, a in opts: 256 if o in ("-h", "--help"): 257 Usage(docstring) 258 sys.exit() 259 elif o in ("-v", "--verbose"): 260 OPTIONS.verbose = True 261 elif o in ("-p", "--path"): 262 os.environ["PATH"] = a + os.pathsep + os.environ["PATH"] 263 path_specified = True 264 else: 265 if extra_option_handler is None or not extra_option_handler(o, a): 266 assert False, "unknown option \"%s\"" % (o,) 267 268 if not path_specified: 269 os.environ["PATH"] = ("out/host/linux-x86/bin" + os.pathsep + 270 os.environ["PATH"]) 271 272 return args 273 274 275def Cleanup(): 276 for i in OPTIONS.tempfiles: 277 if os.path.isdir(i): 278 shutil.rmtree(i) 279 else: 280 os.remove(i) 281