├── .gitignore ├── Makefile.am ├── configure.ac ├── README ├── bundle-chroot-builder.py └── COPYING /.gitignore: -------------------------------------------------------------------------------- 1 | Makefile 2 | Makefile.in 3 | configure 4 | aclocal.m4 5 | autom4te.cache/ 6 | config.log 7 | config.status 8 | install-sh 9 | missing 10 | depcomp 11 | -------------------------------------------------------------------------------- /Makefile.am: -------------------------------------------------------------------------------- 1 | dist_bin_SCRIPTS = \ 2 | bundle-chroot-builder.py 3 | 4 | configdir = $(datadir)/defaults/bundle-chroot-builder 5 | dist_config_DATA = \ 6 | builder.conf 7 | EXTRA_DIST = COPYING 8 | -------------------------------------------------------------------------------- /configure.ac: -------------------------------------------------------------------------------- 1 | AC_PREREQ([2.68]) 2 | AC_INIT([bundle-chroot-builder],[1.15],[tudor.marcu@intel.com],[bundle-chroot-builder]) 3 | AM_INIT_AUTOMAKE([foreign silent-rules color-tests no-dist-gzip dist-xz]) 4 | AC_CONFIG_FILES(Makefile) 5 | AC_PREFIX_DEFAULT(/usr/local) 6 | AC_OUTPUT 7 | -------------------------------------------------------------------------------- /README: -------------------------------------------------------------------------------- 1 | Building this Project 2 | ===================== 3 | For help using automake see 4 | http://www.gnu.org/software/automake/manual/html_node/index.html 5 | 6 | Configure: 7 | aclocal 8 | autoconf 9 | automake --add-missing 10 | # Defaults to /usr/local or specific --prefix=/usr 11 | # to overwrite the installed version 12 | ./configure 13 | 14 | Build: 15 | make 16 | 17 | Install: 18 | make -n install 19 | sudo make install 20 | 21 | Configuration File 22 | ================== 23 | Please update the configuration file paths to point to where your 24 | bundle-chroot-builder and clr-bundles directories are on the system. 25 | 26 | The builder configuration file can be found in: 27 | /usr/share/defaults/bundle-chroot-builder/ 28 | By default, the builder will use the config in here, but can be overridden by 29 | one placed in /etc/bundle-chroot-builder/, or specified with -c/--config. 30 | 31 | Running The Builder 32 | =================== 33 | To build version 10 chroots: 34 | ./bundle-chroot-builder.py 10 35 | 36 | To build version 10 chroots using a custom configuration file 37 | ./bundle-chroot-builder -c /path/to/builder.conf 10 38 | -------------------------------------------------------------------------------- /bundle-chroot-builder.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # 3 | # Copyright © 2015-2016 Intel Corporation. 4 | # 5 | # This program is free software: you can redistribute it and/or modify 6 | # it under the terms of the GNU General Public License as published by 7 | # the Free Software Foundation, version 3 or later of the License. 8 | # 9 | # This program is distributed in the hope that it will be useful, 10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 | # GNU General Public License for more details. 13 | # 14 | # You should have received a copy of the GNU General Public License 15 | # along with this program. If not, see . 16 | 17 | """Software Update server bundle chroot creator""" 18 | 19 | # pylint: disable=R0912 20 | # pylint: disable=R0914 21 | # pylint: disable=R0915 22 | # pylint: disable=W0703 23 | 24 | import argparse 25 | import configparser 26 | import os 27 | import os.path 28 | import io 29 | import platform 30 | import re 31 | import shutil 32 | import stat 33 | import subprocess 34 | import sys 35 | import tempfile 36 | import time 37 | import urllib.request 38 | import multiprocessing 39 | 40 | 41 | def handle_options(): 42 | """Process command arguments""" 43 | aparser = argparse.ArgumentParser() 44 | aparser.add_argument("version", help="New build version") 45 | aparser.add_argument("-m", "--mix-version", help="Mix version for SWUPD mixer") 46 | aparser.add_argument("-c", "--config", help="Path to config file") 47 | args = aparser.parse_args() 48 | return args 49 | 50 | 51 | def get_config(args): 52 | buildconf='/usr/share/defaults/bundle-chroot-builder/builder.conf' 53 | if os.path.isfile('/etc/bundle-chroot-builder/builder.conf'): 54 | buildconf = '/etc/bundle-chroot-builder/builder.conf' 55 | if args.config: 56 | buildconf = args.config 57 | 58 | print("Reading from %s" % buildconf) 59 | cfg_txt = "" 60 | # Check that the environment variables in the config file are valid 61 | pattern = re.compile("\$\{?(\w+)\}?") 62 | for i, line in enumerate(open(buildconf, 'r')): 63 | for match in re.finditer(pattern, line): 64 | if not match.group(1) in os.environ: 65 | print("ERROR:\nbuilder.conf contains an undefined environment variable: %s on line %s\n" 66 | % (i+1, match.group(1))) 67 | exit(1) 68 | cfg_txt += os.path.expandvars(line) 69 | 70 | config = configparser.ConfigParser() 71 | config.readfp(io.StringIO(cfg_txt)) 72 | return config 73 | 74 | 75 | def read_config(args): 76 | config = get_config(args) 77 | for option in ['SERVER_STATE_DIR', 'BUNDLE_DIR', 'YUM_CONF']: 78 | if config.has_option('Builder', option) == False: 79 | print("ERROR:\nbuilder.conf is missing:\n[Builder]\n%s\n" % option) 80 | exit(1) 81 | 82 | """Read the configuration file for our script values""" 83 | conf = config['Builder'] 84 | state_dir = conf['SERVER_STATE_DIR'] 85 | bundles = conf['BUNDLE_DIR'] 86 | yum_conf = conf['YUM_CONF'] 87 | 88 | return state_dir, bundles, yum_conf 89 | 90 | 91 | def install_bundle(out_dir, postfix, bundle, bundles, yum_cmd): 92 | """Helper function to yum install a bundle""" 93 | lines = [] 94 | try: 95 | output = subprocess.check_output(["m4", bundles + "/" + bundle], cwd=bundles, bufsize=1, universal_newlines=True) 96 | except subprocess.CalledProcessError as e: 97 | print('ERROR {0}: m4 failed on {1}/{2}'.format(e.returncode, bundles, bundle)) 98 | raise 99 | for line in output: 100 | lines.append(line) 101 | 102 | pkgs = "".join(lines) 103 | to_install = [] 104 | for pkg in pkgs.splitlines(): 105 | pkg = pkg.strip() 106 | # Don't add blank lines or lines with leading '#' 107 | if len(pkg) == 0 or pkg[0] == "#": 108 | continue 109 | to_install.append(pkg) 110 | subprocess.check_output(yum_cmd + ["--installroot={0}/{1}" .format(out_dir, postfix), "install"] + to_install) 111 | includes = [] 112 | with open(bundles + "/" + bundle, "r") as bfile: 113 | for line in bfile.readlines(): 114 | if line.startswith("include("): 115 | # 8 characters skips 'include(' 116 | end_position = line.find(")") 117 | includes.append(line[8:end_position] + "\n") 118 | with open("{0}/{1}-includes".format(out_dir, bundle), "w") as ifile: 119 | ifile.writelines(includes) 120 | 121 | 122 | def process_bundle(out_dir, bundle, bundles, yum_cmd): 123 | subprocess.check_output(["cp", "-a", "--preserve=all", "{}/os-core".format(out_dir), "{0}/{1}".format(out_dir, bundle)]) 124 | install_bundle(out_dir, bundle, bundle, bundles, yum_cmd) 125 | with open(out_dir + "/packages-{}".format(bundle), "w") as file: 126 | subprocess.Popen(['rpm', '--root={0}/{1}'.format(out_dir, bundle), 127 | '-qa', '--queryformat', '%{NAME}\t%{SOURCERPM}\n'], stdout=file).wait() 128 | with open(out_dir + "/packages-{}".format(bundle), "r") as file: 129 | raw_list = file.readlines() 130 | for line in raw_list: 131 | # Line is 'pkg\tpkg.src.rpm\n' 132 | subpackage, srpm = line.split("\t") 133 | # Drop newline 134 | srpm = srpm[:-1] 135 | with open(out_dir + "/pkgmap-{0} * {1}".format(bundle, srpm), "a") as file: 136 | subprocess.Popen(['rpm', '--root={0}/{1}'.format(out_dir, bundle), 137 | '-ql', subpackage], stdout=file).wait() 138 | bundle_prefix = out_dir + "/" + bundle + "/usr/share/clear/bundles/" 139 | with open(bundle_prefix + bundle, "a"): 140 | os.utime(bundle_prefix + bundle, None) 141 | clean_bundle(out_dir, bundle, bundles, yum_cmd) 142 | 143 | 144 | def clean_bundle(out_dir, bundle, bundles, yum_cmd): 145 | mode_00755 = (stat.S_IRWXU | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH | stat.S_IXOTH) 146 | mode_01777 = stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO | stat.S_ISVTX 147 | prev_dir = os.getcwd() 148 | os.chdir(out_dir + "/" + bundle) 149 | # must use relative paths here or we kill the host 150 | shutil.rmtree("./var/lib/") 151 | os.mkdir("./var/lib/") 152 | os.chmod("./var/lib/", mode_00755) 153 | shutil.rmtree("./var/cache/") 154 | os.mkdir("./var/cache/") 155 | os.chmod("./var/cache/", mode_00755) 156 | shutil.rmtree("./var/log/") 157 | os.mkdir("./var/log/") 158 | os.chmod("./var/log/", mode_00755) 159 | shutil.rmtree("./dev/") 160 | os.mkdir("./dev/") 161 | os.chmod("./dev/", mode_00755) 162 | shutil.rmtree("./run/") 163 | os.mkdir("./run/") 164 | os.chmod("./run/", mode_00755) 165 | shutil.rmtree("./tmp/") 166 | os.mkdir("./tmp/") 167 | os.chmod("./tmp/", mode_01777) 168 | os.chdir(prev_dir) 169 | 170 | 171 | def write_default_server_ini(state_dir, server_conf): 172 | """ 173 | Write default server.ini file in the state dir in the following format 174 | 175 | [Server] 176 | emptydir={state_dir}/empty/ 177 | imagebase={state_dir}/image/ 178 | outputdir={state_dir}/www/ 179 | 180 | [Debuginfo] 181 | banned=true 182 | lib=/usr/lib/debug/ 183 | src=/usr/src/debug/ 184 | """ 185 | contents = ("[Server]\n" 186 | "emptydir={0}/empty/\n" 187 | "imagebase={0}/image/\n" 188 | "outputdir={0}/www/\n".format(state_dir)) 189 | if server_conf: 190 | contents += ("\n[Debuginfo]\n" 191 | "banned={}\n" 192 | "lib={}\n" 193 | "src={}\n" 194 | .format(server_conf.get('debuginfo_banned'), 195 | server_conf.get('debuginfo_lib'), 196 | server_conf.get('debuginfo_src'))) 197 | 198 | with open(state_dir + "/server.ini", "w+") as serverini: 199 | serverini.write(contents) 200 | 201 | 202 | def create_chroots(args, state_dir, bundles, yum_conf): 203 | """The state_dir should always be created if it does not exist""" 204 | if os.path.isdir(state_dir) == False: 205 | os.makedirs(state_dir) 206 | if os.path.isdir(state_dir + "/image") == False: 207 | os.makedirs(state_dir + "/image") 208 | if os.path.isdir(state_dir + "/www") == False: 209 | os.makedirs(state_dir + "/www") 210 | if os.path.isdir(state_dir + "/image/0") == False: 211 | os.makedirs(state_dir + "/image/0") 212 | if os.path.isdir(state_dir + "/www/0") == False: 213 | os.makedirs(state_dir + "/www/0") 214 | 215 | # Create server.ini and groups.ini for create_update later on 216 | config = get_config(args) 217 | config = config['Server'] if 'Server' in config else {} 218 | write_default_server_ini(state_dir, config) 219 | with open(state_dir + "/groups.ini", "w+") as groupsini: 220 | bundle_list = os.listdir(bundles) 221 | bundle_list = trim_bundles(bundle_list) 222 | for bundle in bundle_list: 223 | groupsini.write("[{0}]\ngroup={0}\n\n".format(bundle)) 224 | 225 | """Setup chroots for bundles""" 226 | bversion = "" 227 | blines = [] 228 | if args.mix_version: 229 | out_version = args.mix_version 230 | else: 231 | out_version = args.version 232 | build_version = args.version 233 | 234 | if os.path.exists(state_dir + "/image/LAST_VER") == False: 235 | with open(state_dir + "/image/LAST_VER", "w") as latestver: 236 | latestver.write("0\n") 237 | 238 | config = configparser.ConfigParser() 239 | config.read(yum_conf) 240 | 241 | """Read the yum config to find which url to use""" 242 | if 'local' in config: 243 | conf_baseurl = config['local']['baseurl'] 244 | print(conf_baseurl) 245 | else: 246 | conf_baseurl = config['clear']['baseurl'] 247 | url = conf_baseurl.split("$releasever")[0] + build_version + conf_baseurl.split("$releasever")[1] 248 | conf_baseurl = url 249 | 250 | out_dir = state_dir + "/image/" + out_version 251 | 252 | try: 253 | with open("/usr/share/clear/version", "r") as verfile: 254 | clrver = int(verfile.read().strip()) 255 | except Exception: 256 | clrver = None 257 | 258 | if clrver and clrver > 20650: 259 | print("using dnf on clr") 260 | packager = ["dnf"] 261 | elif platform.dist()[0] == "fedora" and int(platform.dist()[1]) >= 22: 262 | print("using dnf instead of yum") 263 | packager = ["dnf"] 264 | else: 265 | packager = ["yum"] 266 | yum_cmd = packager + ["--config={}".format(yum_conf), "-y", "--releasever={}".format(build_version)] 267 | if 'local' in config == False: 268 | try: 269 | urllib.request.urlopen(conf_baseurl) 270 | except Exception as excep: 271 | print("Unable to retrieve {}".format(conf_baseurl)) 272 | print(excep) 273 | sys.exit(-2) 274 | if os.path.isdir(out_dir): 275 | print("Removing pre-existing {} before starting".format(out_dir)) 276 | os.system('rm -rf '+out_dir) 277 | # if os.path.isdir(out_dir): 278 | # print("Removing pre-existing {} before starting".format(out_dir)) 279 | # shutil.rmtree(out_dir) 280 | print("Preparing new {}".format(out_dir)) 281 | print(" based on bundles from: {}".format(bundles)) 282 | print(" and yum config: {}".format(yum_conf)) 283 | 284 | print("Creating os-core bundle") 285 | os.makedirs(out_dir + "/os-core/var/lib/rpm") 286 | 287 | print("Initializing rpm database") 288 | subprocess.check_output(["rpm", "--root", "{}/os-core".format(out_dir), "--initdb"]) 289 | 290 | print("Cleaning yum cache") 291 | subprocess.check_output(yum_cmd + ["--installroot={}/os-core".format(out_dir), "clean", "all"]) 292 | 293 | print("Yum installing os-core filesystem") 294 | subprocess.check_output(yum_cmd + ["--installroot={}/os-core".format(out_dir), "install", "filesystem"]) 295 | 296 | print("Yum installing packages from os-core") 297 | install_bundle(out_dir, "os-core", "os-core", bundles, yum_cmd) 298 | 299 | os.makedirs(out_dir + "/os-core/usr/share/clear", exist_ok=True) 300 | with open(out_dir + "/os-core/usr/share/clear/version", "w") as file: 301 | file.writelines([out_version]) 302 | with open(out_dir + "/os-core/usr/share/clear/versionstamp", "w") as file: 303 | file.writelines([str(int(time.time()))]) 304 | 305 | bundle_prefix = out_dir + "/os-core/usr/share/clear/bundles/" 306 | os.makedirs(bundle_prefix) 307 | with open(bundle_prefix + "os-core", "a"): 308 | os.utime(bundle_prefix + "os-core", None) 309 | 310 | print("Noting os-core package list") 311 | with open(out_dir + "/versions", "w") as file: 312 | subprocess.Popen(yum_cmd + ["--quiet", "--installroot={}/os-core".format(out_dir), "list"], stdout=file).wait() 313 | with open(out_dir + "/packages-os-core", "w") as file: 314 | subprocess.Popen(['rpm', '--root={}/os-core'.format(out_dir), 315 | '-qa', '--queryformat', '%{NAME}\t%{SOURCERPM}\n'], stdout=file).wait() 316 | with open(out_dir + "/os-core/usr/lib/os-release", "r") as file: 317 | lines = file.readlines() 318 | for line in lines: 319 | if line.startswith("VERSION_ID="): 320 | bversion = line.split("=")[1] 321 | if bversion != out_version: 322 | line = "VERSION_ID={}\n".format(out_version) 323 | blines.append(line) 324 | with open(out_dir + "/os-core/usr/lib/os-release", "w") as file: 325 | file.writelines(blines) 326 | 327 | bundle_list = os.listdir(bundles) 328 | bundle_list.remove('os-core') 329 | bundle_list = trim_bundles(bundle_list) 330 | pool = multiprocessing.Pool() 331 | results_list = [] 332 | 333 | def progress(r): 334 | print('.', end="", flush=True) 335 | 336 | for bundle in bundle_list: 337 | print("Scheduling to process bundle {}".format(bundle)) 338 | r = pool.apply_async(process_bundle, (out_dir, bundle, bundles, yum_cmd), callback=progress) 339 | results_list.append(r) 340 | print("Waiting for tasks to complete...") 341 | pool.close() 342 | pool.join() 343 | print(' done!') 344 | print("Retrieving results...") 345 | for r in results_list: 346 | r.get() 347 | 348 | """Read the URL values from builder.conf and insert them into os-core-update to swupd knows where to pull content from""" 349 | config = get_config(args) 350 | 351 | """Read the configuration file for our script values""" 352 | for option in ['BUNDLE', 'CONTENTURL', 'VERSIONURL', 'FORMAT']: 353 | if config.has_option('swupd', option) == False: 354 | print("ERROR:\nbuilder.conf is missing:\n[swupd]\n%s\n" % option) 355 | exit(1) 356 | conf = config['swupd'] 357 | bundlename = conf['BUNDLE'] 358 | contenturl = conf['CONTENTURL'] 359 | versionurl = conf['VERSIONURL'] 360 | formatname = conf['FORMAT'] 361 | 362 | print("Adding SWUPD default values to '{}' bundle...".format(bundlename)) 363 | """Do not add a leading slash on anything except the first variable in os.path.join!""" 364 | confpath = os.path.join(out_dir, bundlename, "usr/share/defaults/swupd/") 365 | os.makedirs(confpath, exist_ok=True) 366 | with open(os.path.join(confpath, "contenturl"), "w") as file: 367 | file.writelines(contenturl) 368 | print(" contenturl: {}".format(contenturl)) 369 | with open(os.path.join(confpath, "versionurl"), "w") as file: 370 | file.writelines(versionurl) 371 | print(" versionurl: {}".format(versionurl)) 372 | with open(os.path.join(confpath, "format"), "w") as file: 373 | file.writelines(formatname) 374 | print(" format: {}".format(formatname)) 375 | 376 | print("Creating package to file mappings") 377 | package_mapping = {} 378 | map_files = [f for f in os.listdir(out_dir) if f.startswith("pkgmap-")] 379 | for map_file in map_files: 380 | # map_file's name is "pkgmap-{bundle} * {pkg}.src.rpm" 381 | # The " * " is pure magic but unlikely enough to not show up in a 382 | # real package's filename I'm using it instead of recursing through 383 | # temporary per bundle folders 384 | package_name = map_file[map_file.find(" * ") + 3:-len(".src.rpm")] 385 | with open(out_dir + "/" + map_file, "rb") as file: 386 | path_list = file.readlines() 387 | if package_name not in package_mapping: 388 | package_mapping[package_name] = set() 389 | for path in path_list: 390 | # RPM prints out a specific string for subpackages that contain no 391 | # files. It should be excluded from the SRPM file list. 392 | if re.match(br"\(contains no files\)\n", path): 393 | continue 394 | package_mapping[package_name].add(path) 395 | for package_name, paths in package_mapping.items(): 396 | with open(out_dir + "/files-{}".format(package_name), "wb") as file: 397 | file.writelines(sorted(paths)) 398 | for map_file in map_files: 399 | os.unlink(out_dir + "/" + map_file) 400 | 401 | print("Cleaning os-core...") 402 | clean_bundle(out_dir, 'os-core', bundles, yum_cmd) 403 | 404 | print("Cleaning package list") 405 | web_dir = state_dir + "/www/" + out_version + "/" 406 | image_dir = state_dir + "/image/" + out_version + "/" 407 | if os.path.isdir(web_dir): 408 | print(" removing pre-existing {} before setting version file" .format(web_dir)) 409 | os.system('rm -rf '+web_dir) 410 | # FIXME: Figure out problems with the below to replace the above. 411 | # Consider all uses of os.system("rm -fr") as FIXMEs of the same variety. 412 | # if os.path.isdir(image_dir): 413 | # print(" removing pre-existing {} before setting version file" 414 | # .format(imagedir()) 415 | # shutil.rmtree(image_dir) 416 | os.makedirs(image_dir + '/noship') 417 | versions_output = [] 418 | with open(out_dir + "/versions", "r") as file: 419 | versions = set() 420 | lines = file.readlines() 421 | for line in lines: 422 | if line.startswith("Available") or \ 423 | line.startswith("Installed") or \ 424 | line.startswith("BDB2053") or \ 425 | line.startswith("rpm") or line.startswith("yum"): 426 | continue 427 | name, pver = re.search("^([^\t ]*)[\t ]*([^\t ]*)", 428 | line).groups() 429 | versions.add(name + ":" + pver) 430 | versions = sorted(versions) 431 | versions_output.append("{0: <50}{1}\n".format("Available", "Packages")) 432 | for name, pver in [line.split(":") for line in versions]: 433 | versions_output.append("{0: <50}{1}\n".format(name, pver)) 434 | with open(image_dir + "versions", "w") as file: 435 | file.writelines(versions_output) 436 | bundle_list = os.listdir(bundles) 437 | bundle_list = trim_bundles(bundle_list) 438 | for bundle in bundle_list: 439 | shutil.copyfile(out_dir + "/packages-{}".format(bundle), image_dir + "/noship/packages-{}".format(bundle)) 440 | if os.path.isfile(out_dir + "/{}-includes".format(bundle)): 441 | shutil.copyfile(out_dir + "/{}-includes".format(bundle), image_dir + "/noship/{}-includes".format(bundle)) 442 | for package_name in package_mapping.keys(): 443 | shutil.copyfile(out_dir + "/files-{}".format(package_name), 444 | image_dir + "/noship/files-{}".format(package_name)) 445 | 446 | # Remove bundles with blacklisted characters, such as dot files 447 | def trim_bundles(bundles): 448 | for bundle in bundles: 449 | if bundle.startswith('.'): 450 | bundles.remove(bundle) 451 | return bundles 452 | 453 | def main(): 454 | """Entry point for chroot creator""" 455 | args = handle_options() 456 | state_dir, bundles, yum_conf = read_config(args) 457 | create_chroots(args, state_dir, bundles, yum_conf) 458 | 459 | if __name__ == '__main__': 460 | main() 461 | sys.exit(0) 462 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------