1 files changed, 359 insertions, 0 deletions

diff --git a/meta/classes/license.bbclass b/meta/classes/license.bbclass
new file mode 100644
index 0000000000..6abdae4e84
--- /dev/null
+++ b/meta/classes/license.bbclass
@@ -0,0 +1,359 @@
+# Populates LICENSE_DIRECTORY as set in distro config with the license files as set by
+# LIC_FILES_CHKSUM.
+# TODO:
+# - There is a real issue revolving around license naming standards.
+
+LICENSE_DIRECTORY ??= "${DEPLOY_DIR}/licenses"
+LICSSTATEDIR = "${WORKDIR}/license-destdir/"
+
+# Create extra package with license texts and add it to RRECOMMENDS_${PN}
+LICENSE_CREATE_PACKAGE[type] = "boolean"
+LICENSE_CREATE_PACKAGE ??= "0"
+LICENSE_PACKAGE_SUFFIX ??= "-lic"
+LICENSE_FILES_DIRECTORY ??= "${datadir}/licenses/"
+
+addtask populate_lic after do_patch before do_build
+do_populate_lic[dirs] = "${LICSSTATEDIR}/${PN}"
+do_populate_lic[cleandirs] = "${LICSSTATEDIR}"
+
+license_create_manifest() {
+        mkdir -p ${LICENSE_DIRECTORY}/${IMAGE_NAME}
+        # Get list of installed packages
+        list_installed_packages |sort > ${LICENSE_DIRECTORY}/${IMAGE_NAME}/package.manifest
+        INSTALLED_PKGS=`cat ${LICENSE_DIRECTORY}/${IMAGE_NAME}/package.manifest`
+        LICENSE_MANIFEST="${LICENSE_DIRECTORY}/${IMAGE_NAME}/license.manifest"
+        # remove existing license.manifest file
+        if [ -f ${LICENSE_MANIFEST} ]; then
+                rm ${LICENSE_MANIFEST}
+        fi
+        touch ${LICENSE_MANIFEST}
+        for pkg in ${INSTALLED_PKGS}; do
+                filename=`ls ${PKGDATA_DIR}/runtime-reverse/${pkg}| head -1`
+                pkged_pn="$(sed -n 's/^PN: //p' ${filename})"
+
+                # check to see if the package name exists in the manifest. if so, bail.
+                if grep -q "^PACKAGE NAME: ${pkg}" ${LICENSE_MANIFEST}; then
+                        continue
+                fi
+
+                pkged_pv="$(sed -n 's/^PV: //p' ${filename})"
+                pkged_name="$(basename $(readlink ${filename}))"
+                pkged_lic="$(sed -n "/^LICENSE_${pkged_name}: /{ s/^LICENSE_${pkged_name}: //; s/[|&()*]/ /g; s/  */ /g; p }" ${filename})"
+                if [ -z ${pkged_lic} ]; then
+                        # fallback checking value of LICENSE
+                        pkged_lic="$(sed -n "/^LICENSE: /{ s/^LICENSE: //; s/[|&()*]/ /g; s/  */ /g; p }" ${filename})"
+                fi
+
+                echo "PACKAGE NAME:" ${pkg} >> ${LICENSE_MANIFEST}
+                echo "PACKAGE VERSION:" ${pkged_pv} >> ${LICENSE_MANIFEST}
+                echo "RECIPE NAME:" ${pkged_pn} >> ${LICENSE_MANIFEST}
+                printf "LICENSE:" >> ${LICENSE_MANIFEST}
+                for lic in ${pkged_lic}; do
+                        # to reference a license file trim trailing + symbol
+                        if ! [ -e "${LICENSE_DIRECTORY}/${pkged_pn}/generic_${lic%+}" ]; then
+                                bbwarn "The license listed ${lic} was not in the licenses collected for ${pkged_pn}"
+                        fi
+                        printf " ${lic}" >> ${LICENSE_MANIFEST}
+                done
+                printf "\n\n" >> ${LICENSE_MANIFEST}
+        done
+
+        # Two options here:
+        # - Just copy the manifest
+        # - Copy the manifest and the license directories
+        # With both options set we see a .5 M increase in core-image-minimal
+        if [ -n "${COPY_LIC_MANIFEST}" ]; then
+                mkdir -p ${IMAGE_ROOTFS}/usr/share/common-licenses/
+                cp ${LICENSE_MANIFEST} ${IMAGE_ROOTFS}/usr/share/common-licenses/license.manifest
+                if [ -n "${COPY_LIC_DIRS}" ]; then
+                        for pkg in ${INSTALLED_PKGS}; do
+                                mkdir -p ${IMAGE_ROOTFS}/usr/share/common-licenses/${pkg}
+                                for lic in `ls ${LICENSE_DIRECTORY}/${pkg}`; do
+                                        # Really don't need to copy the generics as they're 
+                                        # represented in the manifest and in the actual pkg licenses
+                                        # Doing so would make your image quite a bit larger
+                                        if [[ "${lic}" != "generic_"* ]]; then
+                                                cp ${LICENSE_DIRECTORY}/${pkg}/${lic} ${IMAGE_ROOTFS}/usr/share/common-licenses/${pkg}/${lic}
+                                        elif [[ "${lic}" == "generic_"* ]]; then
+                                                if [ ! -f ${IMAGE_ROOTFS}/usr/share/common-licenses/${lic} ]; then
+                                                        cp ${LICENSE_DIRECTORY}/${pkg}/${lic} ${IMAGE_ROOTFS}/usr/share/common-licenses/
+                                                fi
+                                                ln -s ../${lic} ${IMAGE_ROOTFS}/usr/share/common-licenses/${pkg}/${lic}
+                                        fi
+                                done
+                        done
+                fi
+        fi
+
+}
+
+python do_populate_lic() {
+    """
+    Populate LICENSE_DIRECTORY with licenses.
+    """
+    lic_files_paths = find_license_files(d)
+
+    # The base directory we wrangle licenses to
+    destdir = os.path.join(d.getVar('LICSSTATEDIR', True), d.getVar('PN', True))
+    copy_license_files(lic_files_paths, destdir)
+}
+
+# it would be better to copy them in do_install_append, but find_license_filesa is python
+python perform_packagecopy_prepend () {
+    enabled = oe.data.typed_value('LICENSE_CREATE_PACKAGE', d)
+    if d.getVar('CLASSOVERRIDE', True) == 'class-target' and enabled:
+        lic_files_paths = find_license_files(d)
+
+        # LICENSE_FILES_DIRECTORY starts with '/' so os.path.join cannot be used to join D and LICENSE_FILES_DIRECTORY
+        destdir = d.getVar('D', True) + os.path.join(d.getVar('LICENSE_FILES_DIRECTORY', True), d.getVar('PN', True))
+        copy_license_files(lic_files_paths, destdir)
+        add_package_and_files(d)
+}
+
+def add_package_and_files(d):
+    packages = d.getVar('PACKAGES', True)
+    files = d.getVar('LICENSE_FILES_DIRECTORY', True)
+    pn = d.getVar('PN', True)
+    pn_lic = "%s%s" % (pn, d.getVar('LICENSE_PACKAGE_SUFFIX'))
+    if pn_lic in packages:
+        bb.warn("%s package already existed in %s." % (pn_lic, pn))
+    else:
+        # first in PACKAGES to be sure that nothing else gets LICENSE_FILES_DIRECTORY
+        d.setVar('PACKAGES', "%s %s" % (pn_lic, packages))
+        d.setVar('FILES_' + pn_lic, files)
+        rrecommends_pn = d.getVar('RRECOMMENDS_' + pn, True)
+        if rrecommends_pn:
+            d.setVar('RRECOMMENDS_' + pn, "%s %s" % (pn_lic, rrecommends_pn))
+        else:
+            d.setVar('RRECOMMENDS_' + pn, "%s" % (pn_lic))
+
+def copy_license_files(lic_files_paths, destdir):
+    import shutil
+
+    bb.utils.mkdirhier(destdir)
+    for (basename, path) in lic_files_paths:
+        try:
+            ret = shutil.copyfile(path, os.path.join(destdir, basename))
+        except Exception as e:
+            bb.warn("Could not copy license file %s: %s" % (basename, e))
+
+def find_license_files(d):
+    """
+    Creates list of files used in LIC_FILES_CHKSUM and generic LICENSE files.
+    """
+    import shutil
+    import oe.license
+
+    pn = d.getVar('PN', True)
+    for package in d.getVar('PACKAGES', True):
+        if d.getVar('LICENSE_' + package, True):
+            license_types = license_types + ' & ' + \
+                            d.getVar('LICENSE_' + package, True)
+
+    #If we get here with no license types, then that means we have a recipe 
+    #level license. If so, we grab only those.
+    try:
+        license_types
+    except NameError:        
+        # All the license types at the recipe level
+        license_types = d.getVar('LICENSE', True)
+ 
+    # All the license files for the package
+    lic_files = d.getVar('LIC_FILES_CHKSUM', True)
+    pn = d.getVar('PN', True)
+    # The license files are located in S/LIC_FILE_CHECKSUM.
+    srcdir = d.getVar('S', True)
+    # Directory we store the generic licenses as set in the distro configuration
+    generic_directory = d.getVar('COMMON_LICENSE_DIR', True)
+    # List of basename, path tuples
+    lic_files_paths = []
+    license_source_dirs = []
+    license_source_dirs.append(generic_directory)
+    try:
+        additional_lic_dirs = d.getVar('LICENSE_PATH', True).split()
+        for lic_dir in additional_lic_dirs:
+            license_source_dirs.append(lic_dir)
+    except:
+        pass
+
+    class FindVisitor(oe.license.LicenseVisitor):
+        def visit_Str(self, node):
+            #
+            # Until I figure out what to do with
+            # the two modifiers I support (or greater = +
+            # and "with exceptions" being *
+            # we'll just strip out the modifier and put
+            # the base license.
+            find_license(node.s.replace("+", "").replace("*", ""))
+            self.generic_visit(node)
+
+    def find_license(license_type):
+        try:
+            bb.utils.mkdirhier(gen_lic_dest)
+        except:
+            pass
+        spdx_generic = None
+        license_source = None
+        # If the generic does not exist we need to check to see if there is an SPDX mapping to it
+        for lic_dir in license_source_dirs:
+            if not os.path.isfile(os.path.join(lic_dir, license_type)):
+                if d.getVarFlag('SPDXLICENSEMAP', license_type) != None:
+                    # Great, there is an SPDXLICENSEMAP. We can copy!
+                    bb.debug(1, "We need to use a SPDXLICENSEMAP for %s" % (license_type))
+                    spdx_generic = d.getVarFlag('SPDXLICENSEMAP', license_type)
+                    license_source = lic_dir
+                    break
+            elif os.path.isfile(os.path.join(lic_dir, license_type)):
+                spdx_generic = license_type
+                license_source = lic_dir
+                break
+
+        if spdx_generic and license_source:
+            # we really should copy to generic_ + spdx_generic, however, that ends up messing the manifest
+            # audit up. This should be fixed in emit_pkgdata (or, we actually got and fix all the recipes)
+
+            lic_files_paths.append(("generic_" + license_type, os.path.join(license_source, spdx_generic)))
+        else:
+            # And here is where we warn people that their licenses are lousy
+            bb.warn("%s: No generic license file exists for: %s in any provider" % (pn, license_type))
+            pass
+
+    if not generic_directory:
+        raise bb.build.FuncFailed("COMMON_LICENSE_DIR is unset. Please set this in your distro config")
+
+    if not lic_files:
+        # No recipe should have an invalid license file. This is checked else
+        # where, but let's be pedantic
+        bb.note(pn + ": Recipe file does not have license file information.")
+        return lic_files_paths
+
+    for url in lic_files.split():
+        (type, host, path, user, pswd, parm) = bb.fetch.decodeurl(url)
+        # We want the license filename and path
+        srclicfile = os.path.join(srcdir, path)
+        lic_files_paths.append((os.path.basename(path), srclicfile))
+
+    v = FindVisitor()
+    try:
+        v.visit_string(license_types)
+    except oe.license.InvalidLicense as exc:
+        bb.fatal('%s: %s' % (d.getVar('PF', True), exc))
+    except SyntaxError:
+        bb.warn("%s: Failed to parse it's LICENSE field." % (d.getVar('PF', True)))
+
+    return lic_files_paths
+
+def return_spdx(d, license):
+    """
+    This function returns the spdx mapping of a license if it exists.
+     """
+    return d.getVarFlag('SPDXLICENSEMAP', license, True)
+
+def incompatible_license(d, dont_want_licenses, package=None):
+    """
+    This function checks if a recipe has only incompatible licenses. It also take into consideration 'or'
+    operand.
+    """
+    import re
+    import oe.license
+    from fnmatch import fnmatchcase as fnmatch
+    license = d.getVar("LICENSE_%s" % package, True) if package else None
+    if not license:
+        license = d.getVar('LICENSE', True)
+
+    def license_ok(license):
+        for dwl in dont_want_licenses:
+            # If you want to exclude license named generically 'X', we
+            # surely want to exclude 'X+' as well.  In consequence, we
+            # will exclude a trailing '+' character from LICENSE in
+            # case INCOMPATIBLE_LICENSE is not a 'X+' license.
+            lic = license
+            if not re.search('\+$', dwl):
+                lic = re.sub('\+', '', license)
+            if fnmatch(lic, dwl):
+                return False
+        return True
+
+    # Handles an "or" or two license sets provided by
+    # flattened_licenses(), pick one that works if possible.
+    def choose_lic_set(a, b):
+        return a if all(license_ok(lic) for lic in a) else b
+
+    try:
+        licenses = oe.license.flattened_licenses(license, choose_lic_set)
+    except oe.license.LicenseError as exc:
+        bb.fatal('%s: %s' % (d.getVar('P', True), exc))
+    return any(not license_ok(l) for l in licenses)
+
+def check_license_flags(d):
+    """
+    This function checks if a recipe has any LICENSE_FLAGs that
+    aren't whitelisted.
+
+    If it does, it returns the first LICENSE_FLAG missing from the
+    whitelist, or all the LICENSE_FLAGs if there is no whitelist.
+
+    If everything is is properly whitelisted, it returns None.
+    """
+
+    def license_flag_matches(flag, whitelist, pn):
+        """
+        Return True if flag matches something in whitelist, None if not.
+
+        Before we test a flag against the whitelist, we append _${PN}
+        to it.  We then try to match that string against the
+        whitelist.  This covers the normal case, where we expect
+        LICENSE_FLAGS to be a simple string like 'commercial', which
+        the user typically matches exactly in the whitelist by
+        explicitly appending the package name e.g 'commercial_foo'.
+        If we fail the match however, we then split the flag across
+        '_' and append each fragment and test until we either match or
+        run out of fragments.
+        """
+        flag_pn = ("%s_%s" % (flag, pn))
+        for candidate in whitelist:
+            if flag_pn == candidate:
+                    return True
+
+        flag_cur = ""
+        flagments = flag_pn.split("_")
+        flagments.pop() # we've already tested the full string
+        for flagment in flagments:
+            if flag_cur:
+                flag_cur += "_"
+            flag_cur += flagment
+            for candidate in whitelist:
+                if flag_cur == candidate:
+                    return True
+        return False
+
+    def all_license_flags_match(license_flags, whitelist):
+        """ Return first unmatched flag, None if all flags match """
+        pn = d.getVar('PN', True)
+        split_whitelist = whitelist.split()
+        for flag in license_flags.split():
+            if not license_flag_matches(flag, split_whitelist, pn):
+                return flag
+        return None
+
+    license_flags = d.getVar('LICENSE_FLAGS', True)
+    if license_flags:
+        whitelist = d.getVar('LICENSE_FLAGS_WHITELIST', True)
+        if not whitelist:
+            return license_flags
+        unmatched_flag = all_license_flags_match(license_flags, whitelist)
+        if unmatched_flag:
+            return unmatched_flag
+    return None
+
+SSTATETASKS += "do_populate_lic"
+do_populate_lic[sstate-name] = "populate-lic"
+do_populate_lic[sstate-inputdirs] = "${LICSSTATEDIR}"
+do_populate_lic[sstate-outputdirs] = "${LICENSE_DIRECTORY}/"
+
+ROOTFS_POSTPROCESS_COMMAND_prepend = "license_create_manifest; "
+
+python do_populate_lic_setscene () {
+    sstate_setscene(d)
+}
+addtask do_populate_lic_setscene