agl-basesystem

1 files changed, 311 insertions, 0 deletions

diff --git a/external/poky/meta/classes/useradd-staticids.bbclass b/external/poky/meta/classes/useradd-staticids.bbclass
new file mode 100644
index 00000000..70d59e55
--- /dev/null
+++ b/external/poky/meta/classes/useradd-staticids.bbclass
@@ -0,0 +1,311 @@
+# In order to support a deterministic set of 'dynamic' users/groups,
+# we need a function to reformat the params based on a static file
+def update_useradd_static_config(d):
+    import itertools
+    import re
+    import errno
+    import oe.useradd
+
+    def list_extend(iterable, length, obj = None):
+        """Ensure that iterable is the specified length by extending with obj
+        and return it as a list"""
+        return list(itertools.islice(itertools.chain(iterable, itertools.repeat(obj)), length))
+
+    def merge_files(file_list, exp_fields):
+        """Read each passwd/group file in file_list, split each line and create
+        a dictionary with the user/group names as keys and the split lines as
+        values. If the user/group name already exists in the dictionary, then
+        update any fields in the list with the values from the new list (if they
+        are set)."""
+        id_table = dict()
+        for conf in file_list.split():
+            try:
+                with open(conf, "r") as f:
+                    for line in f:
+                        if line.startswith('#'):
+                            continue
+                        # Make sure there always are at least exp_fields
+                        # elements in the field list. This allows for leaving
+                        # out trailing colons in the files.
+                        fields = list_extend(line.rstrip().split(":"), exp_fields)
+                        if fields[0] not in id_table:
+                            id_table[fields[0]] = fields
+                        else:
+                            id_table[fields[0]] = list(map(lambda x, y: x or y, fields, id_table[fields[0]]))
+            except IOError as e:
+                if e.errno == errno.ENOENT:
+                    pass
+
+        return id_table
+
+    def handle_missing_id(id, type, pkg, files, var, value):
+        # For backwards compatibility we accept "1" in addition to "error"
+        error_dynamic = d.getVar('USERADD_ERROR_DYNAMIC')
+        msg = "%s - %s: %sname %s does not have a static ID defined." % (d.getVar('PN'), pkg, type, id)
+        if files:
+            msg += " Add %s to one of these files: %s" % (id, files)
+        else:
+            msg += " %s file(s) not found in BBPATH: %s" % (var, value)
+        if error_dynamic == 'error' or error_dynamic == '1':
+            raise NotImplementedError(msg)
+        elif error_dynamic == 'warn':
+            bb.warn(msg)
+        elif error_dynamic == 'skip':
+            raise bb.parse.SkipRecipe(msg)
+
+    # Return a list of configuration files based on either the default
+    # files/group or the contents of USERADD_GID_TABLES, resp.
+    # files/passwd for USERADD_UID_TABLES.
+    # Paths are resolved via BBPATH.
+    def get_table_list(d, var, default):
+        files = []
+        bbpath = d.getVar('BBPATH')
+        tables = d.getVar(var)
+        if not tables:
+            tables = default
+        for conf_file in tables.split():
+            files.append(bb.utils.which(bbpath, conf_file))
+        return (' '.join(files), var, default)
+
+    # We parse and rewrite the useradd components
+    def rewrite_useradd(params, is_pkg):
+        parser = oe.useradd.build_useradd_parser()
+
+        newparams = []
+        users = None
+        for param in oe.useradd.split_commands(params):
+            try:
+                uaargs = parser.parse_args(oe.useradd.split_args(param))
+            except:
+                bb.fatal("%s: Unable to parse arguments for USERADD_PARAM_%s: '%s'" % (d.getVar('PN'), pkg, param))
+
+            # Read all passwd files specified in USERADD_UID_TABLES or files/passwd
+            # Use the standard passwd layout:
+            #  username:password:user_id:group_id:comment:home_directory:login_shell
+            #
+            # If a field is left blank, the original value will be used.  The 'username'
+            # field is required.
+            #
+            # Note: we ignore the password field, as including even the hashed password
+            # in the useradd command may introduce a security hole.  It's assumed that
+            # all new users get the default ('*' which prevents login) until the user is
+            # specifically configured by the system admin.
+            if not users:
+                files, table_var, table_value = get_table_list(d, 'USERADD_UID_TABLES', 'files/passwd')
+                users = merge_files(files, 7)
+
+            type = 'system user' if uaargs.system else 'normal user'
+            if uaargs.LOGIN not in users:
+                handle_missing_id(uaargs.LOGIN, type, pkg, files, table_var, table_value)
+                newparams.append(param)
+                continue
+
+            field = users[uaargs.LOGIN]
+
+            if uaargs.uid and field[2] and (uaargs.uid != field[2]):
+                bb.warn("%s: Changing username %s's uid from (%s) to (%s), verify configuration files!" % (d.getVar('PN'), uaargs.LOGIN, uaargs.uid, field[2]))
+            uaargs.uid = field[2] or uaargs.uid
+
+            # Determine the possible groupname
+            # Unless the group name (or gid) is specified, we assume that the LOGIN is the groupname
+            #
+            # By default the system has creation of the matching groups enabled
+            # So if the implicit username-group creation is on, then the implicit groupname (LOGIN)
+            # is used, and we disable the user_group option.
+            #
+            if uaargs.gid:
+                uaargs.groupname = uaargs.gid
+            elif uaargs.user_group is not False:
+                uaargs.groupname = uaargs.LOGIN
+            else:
+                uaargs.groupname = 'users'
+            uaargs.groupid = field[3] or uaargs.groupname
+
+            if uaargs.groupid and uaargs.gid != uaargs.groupid:
+                newgroup = None
+                if not uaargs.groupid.isdigit():
+                    # We don't have a group number, so we have to add a name
+                    bb.debug(1, "Adding group %s!" % uaargs.groupid)
+                    newgroup = "%s %s" % (' --system' if uaargs.system else '', uaargs.groupid)
+                elif uaargs.groupname and not uaargs.groupname.isdigit():
+                    # We have a group name and a group number to assign it to
+                    bb.debug(1, "Adding group %s (gid %s)!" % (uaargs.groupname, uaargs.groupid))
+                    newgroup = "-g %s %s" % (uaargs.groupid, uaargs.groupname)
+                else:
+                    # We want to add a group, but we don't know it's name... so we can't add the group...
+                    # We have to assume the group has previously been added or we'll fail on the adduser...
+                    # Note: specifying the actual gid is very rare in OE, usually the group name is specified.
+                    bb.warn("%s: Changing gid for login %s to %s, verify configuration files!" % (d.getVar('PN'), uaargs.LOGIN, uaargs.groupid))
+
+                uaargs.gid = uaargs.groupid
+                uaargs.user_group = None
+                if newgroup and is_pkg:
+                    groupadd = d.getVar("GROUPADD_PARAM_%s" % pkg)
+                    if groupadd:
+                        # Only add the group if not already specified
+                        if not uaargs.groupname in groupadd:
+                            d.setVar("GROUPADD_PARAM_%s" % pkg, "%s; %s" % (groupadd, newgroup))
+                    else:
+                        d.setVar("GROUPADD_PARAM_%s" % pkg, newgroup)
+
+            uaargs.comment = "'%s'" % field[4] if field[4] else uaargs.comment
+            uaargs.home_dir = field[5] or uaargs.home_dir
+            uaargs.shell = field[6] or uaargs.shell
+
+            # Should be an error if a specific option is set...
+            if not uaargs.uid or not uaargs.uid.isdigit() or not uaargs.gid:
+                 handle_missing_id(uaargs.LOGIN, type, pkg, files, table_var, table_value)
+
+            # Reconstruct the args...
+            newparam  = ['', ' --defaults'][uaargs.defaults]
+            newparam += ['', ' --base-dir %s' % uaargs.base_dir][uaargs.base_dir != None]
+            newparam += ['', ' --comment %s' % uaargs.comment][uaargs.comment != None]
+            newparam += ['', ' --home-dir %s' % uaargs.home_dir][uaargs.home_dir != None]
+            newparam += ['', ' --expiredate %s' % uaargs.expiredate][uaargs.expiredate != None]
+            newparam += ['', ' --inactive %s' % uaargs.inactive][uaargs.inactive != None]
+            newparam += ['', ' --gid %s' % uaargs.gid][uaargs.gid != None]
+            newparam += ['', ' --groups %s' % uaargs.groups][uaargs.groups != None]
+            newparam += ['', ' --skel %s' % uaargs.skel][uaargs.skel != None]
+            newparam += ['', ' --key %s' % uaargs.key][uaargs.key != None]
+            newparam += ['', ' --no-log-init'][uaargs.no_log_init]
+            newparam += ['', ' --create-home'][uaargs.create_home is True]
+            newparam += ['', ' --no-create-home'][uaargs.create_home is False]
+            newparam += ['', ' --no-user-group'][uaargs.user_group is False]
+            newparam += ['', ' --non-unique'][uaargs.non_unique]
+            if uaargs.password != None:
+                newparam += ['', ' --password %s' % uaargs.password][uaargs.password != None]
+            elif uaargs.clear_password:
+                newparam += ['', ' --clear-password %s' % uaargs.clear_password][uaargs.clear_password != None]
+            newparam += ['', ' --root %s' % uaargs.root][uaargs.root != None]
+            newparam += ['', ' --system'][uaargs.system]
+            newparam += ['', ' --shell %s' % uaargs.shell][uaargs.shell != None]
+            newparam += ['', ' --uid %s' % uaargs.uid][uaargs.uid != None]
+            newparam += ['', ' --user-group'][uaargs.user_group is True]
+            newparam += ' %s' % uaargs.LOGIN
+
+            newparams.append(newparam)
+
+        return ";".join(newparams).strip()
+
+    # We parse and rewrite the groupadd components
+    def rewrite_groupadd(params, is_pkg):
+        parser = oe.useradd.build_groupadd_parser()
+
+        newparams = []
+        groups = None
+        for param in oe.useradd.split_commands(params):
+            try:
+                # If we're processing multiple lines, we could have left over values here...
+                gaargs = parser.parse_args(oe.useradd.split_args(param))
+            except:
+                bb.fatal("%s: Unable to parse arguments for GROUPADD_PARAM_%s: '%s'" % (d.getVar('PN'), pkg, param))
+
+            # Read all group files specified in USERADD_GID_TABLES or files/group
+            # Use the standard group layout:
+            #  groupname:password:group_id:group_members
+            #
+            # If a field is left blank, the original value will be used. The 'groupname' field
+            # is required.
+            #
+            # Note: similar to the passwd file, the 'password' filed is ignored
+            # Note: group_members is ignored, group members must be configured with the GROUPMEMS_PARAM
+            if not groups:
+                files, table_var, table_value = get_table_list(d, 'USERADD_GID_TABLES', 'files/group')
+                groups = merge_files(files, 4)
+
+            type = 'system group' if gaargs.system else 'normal group'
+            if gaargs.GROUP not in groups:
+                handle_missing_id(gaargs.GROUP, type, pkg, files, table_var, table_value)
+                newparams.append(param)
+                continue
+
+            field = groups[gaargs.GROUP]
+
+            if field[2]:
+                if gaargs.gid and (gaargs.gid != field[2]):
+                    bb.warn("%s: Changing groupname %s's gid from (%s) to (%s), verify configuration files!" % (d.getVar('PN'), gaargs.GROUP, gaargs.gid, field[2]))
+                gaargs.gid = field[2]
+
+            if not gaargs.gid or not gaargs.gid.isdigit():
+                handle_missing_id(gaargs.GROUP, type, pkg, files, table_var, table_value)
+
+            # Reconstruct the args...
+            newparam  = ['', ' --force'][gaargs.force]
+            newparam += ['', ' --gid %s' % gaargs.gid][gaargs.gid != None]
+            newparam += ['', ' --key %s' % gaargs.key][gaargs.key != None]
+            newparam += ['', ' --non-unique'][gaargs.non_unique]
+            if gaargs.password != None:
+                newparam += ['', ' --password %s' % gaargs.password][gaargs.password != None]
+            elif gaargs.clear_password:
+                newparam += ['', ' --clear-password %s' % gaargs.clear_password][gaargs.clear_password != None]
+            newparam += ['', ' --root %s' % gaargs.root][gaargs.root != None]
+            newparam += ['', ' --system'][gaargs.system]
+            newparam += ' %s' % gaargs.GROUP
+
+            newparams.append(newparam)
+
+        return ";".join(newparams).strip()
+
+    # The parsing of the current recipe depends on the content of
+    # the files listed in USERADD_UID/GID_TABLES. We need to tell bitbake
+    # about that explicitly to trigger re-parsing and thus re-execution of
+    # this code when the files change.
+    bbpath = d.getVar('BBPATH')
+    for varname, default in (('USERADD_UID_TABLES', 'files/passwd'),
+                             ('USERADD_GID_TABLES', 'files/group')):
+        tables = d.getVar(varname)
+        if not tables:
+            tables = default
+        for conf_file in tables.split():
+            bb.parse.mark_dependency(d, bb.utils.which(bbpath, conf_file))
+
+    # Load and process the users and groups, rewriting the adduser/addgroup params
+    useradd_packages = d.getVar('USERADD_PACKAGES') or ""
+
+    for pkg in useradd_packages.split():
+        # Groupmems doesn't have anything we might want to change, so simply validating
+        # is a bit of a waste -- only process useradd/groupadd
+        useradd_param = d.getVar('USERADD_PARAM_%s' % pkg)
+        if useradd_param:
+            #bb.warn("Before: 'USERADD_PARAM_%s' - '%s'" % (pkg, useradd_param))
+            d.setVar('USERADD_PARAM_%s' % pkg, rewrite_useradd(useradd_param, True))
+            #bb.warn("After:  'USERADD_PARAM_%s' - '%s'" % (pkg, d.getVar('USERADD_PARAM_%s' % pkg)))
+
+        groupadd_param = d.getVar('GROUPADD_PARAM_%s' % pkg)
+        if groupadd_param:
+            #bb.warn("Before: 'GROUPADD_PARAM_%s' - '%s'" % (pkg, groupadd_param))
+            d.setVar('GROUPADD_PARAM_%s' % pkg, rewrite_groupadd(groupadd_param, True))
+            #bb.warn("After:  'GROUPADD_PARAM_%s' - '%s'" % (pkg, d.getVar('GROUPADD_PARAM_%s' % pkg)))
+
+    # Load and process extra users and groups, rewriting only adduser/addgroup params
+    pkg = d.getVar('PN')
+    extrausers = d.getVar('EXTRA_USERS_PARAMS') or ""
+
+    #bb.warn("Before:  'EXTRA_USERS_PARAMS' - '%s'" % (d.getVar('EXTRA_USERS_PARAMS')))
+    new_extrausers = []
+    for cmd in oe.useradd.split_commands(extrausers):
+        if re.match('''useradd (.*)''', cmd):
+            useradd_param = re.match('''useradd (.*)''', cmd).group(1)
+            useradd_param = rewrite_useradd(useradd_param, False)
+            cmd = 'useradd %s' % useradd_param
+        elif re.match('''groupadd (.*)''', cmd):
+            groupadd_param = re.match('''groupadd (.*)''', cmd).group(1)
+            groupadd_param = rewrite_groupadd(groupadd_param, False)
+            cmd = 'groupadd %s' % groupadd_param
+
+        new_extrausers.append(cmd)
+
+    new_extrausers.append('')
+    d.setVar('EXTRA_USERS_PARAMS', ';'.join(new_extrausers))
+    #bb.warn("After:  'EXTRA_USERS_PARAMS' - '%s'" % (d.getVar('EXTRA_USERS_PARAMS')))
+
+
+python __anonymous() {
+    if not bb.data.inherits_class('nativesdk', d) \
+        and not bb.data.inherits_class('native', d):
+        try:
+            update_useradd_static_config(d)
+        except NotImplementedError as f:
+            bb.debug(1, "Skipping recipe %s: %s" % (d.getVar('PN'), f))
+            raise bb.parse.SkipRecipe(f)
+}