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package/mdns-alias: replace with lightweight C daemon
The replacement is a complete rewrite in C using the Avahi client API. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg
@@ -1,7 +1,5 @@
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config BR2_PACKAGE_MDNS_ALIAS
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bool mdns-alias
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select BR2_PACKAGE_DBUS
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select BR2_PACKAGE_DBUS_PYTHON
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select BR2_PACKAGE_AVAHI
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help
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Advertises the initial $(HOSTNAME).local and network.local to
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Avahi over D-Bus.
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Advertises the initial $(HOSTNAME).local and network.local with Avahi.
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@@ -0,0 +1,5 @@
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# From GitHub release
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sha256 fd7272e4e520418a4a1352b69df852d963adfa928afcfda8e82ce7953626efdd mdns-alias-1.0.tar.gz
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# Locally generated
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sha256 3d6f910b5e198f3daab48047b8ee6949040f7abee3927daf2e231f265faf7d91 LICENSE
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@@ -5,12 +5,12 @@
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################################################################################
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MDNS_ALIAS_VERSION = 1.0
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MDNS_ALIAS_SITE_METHOD = local
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MDNS_ALIAS_SITE = $(BR2_EXTERNAL_INFIX_PATH)/src/mdns-alias
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MDNS_ALIAS_SETUP_TYPE = setuptools
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MDNS_ALIAS_LICENSE = MIT
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MDNS_ALIAS_SITE = https://github.com/troglobit/mdns-alias/releases/download/v$(MDNS_ALIAS_VERSION)
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MDNS_ALIAS_LICENSE = ISC
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MDNS_ALIAS_LICENSE_FILES = LICENSE
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MDNS_ALIAS_REDISTRIBUTE = NO
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MDNS_ALIAS_DEPENDENCIES = host-pkgconf avahi
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#MDNS_ALIAS_AUTORECONF = YES
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#MDNS_ALIAS_DEPENDENCIES += host-automake host-autoconf
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define MDNS_ALIAS_INSTALL_EXTRA
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$(INSTALL) -D -m 0644 $(MDNS_ALIAS_PKGDIR)/mdns-alias.svc \
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@@ -22,4 +22,4 @@ define MDNS_ALIAS_INSTALL_EXTRA
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endef
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MDNS_ALIAS_POST_INSTALL_TARGET_HOOKS += MDNS_ALIAS_INSTALL_EXTRA
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$(eval $(python-package))
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$(eval $(autotools-package))
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@@ -1,21 +0,0 @@
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MIT License
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Copyright (c) 2024 Joachim Wiberg
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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@@ -1,11 +0,0 @@
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mDNS Alias
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==========
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This Python program both advertises CNAMEs (using D-Bus to Avahi).
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To start the program:
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mdns-alias $hostname.local network.local
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The latter CNAME can be used with nginx and netbrowse to provide
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a basic mDNS service browser.
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@@ -1,24 +0,0 @@
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"""
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Avahi CNAME service over D-Bus advertiser
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"""
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import sys
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import time
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from .mdns_alias import MdnsAlias
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__all__ = ['MdnsAlias']
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def main():
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"""Advertises aliases from command line."""
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mdns_aliases = MdnsAlias()
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for arg in sys.argv[1:]:
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mdns_aliases.publish_cname(str(arg).encode("utf-8", "strict"))
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while True:
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time.sleep(3600)
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if __name__ == '__main__':
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try:
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main()
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except KeyboardInterrupt:
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print("Exiting")
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@@ -1,56 +0,0 @@
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"""Avahi CNAME publisher class"""
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from encodings.idna import ToASCII
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import dbus
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class MdnsAlias:
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"""Import to your project and use publish_cname() for each name."""
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DBUS_NAME = 'org.freedesktop.Avahi'
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CLASS_IN = 0x01
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TYPE_CNAME = 0x05
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TTL = 60
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DBUS_PATH_SERVER = '/'
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DBUS_INTERFACE_SERVER = DBUS_NAME + '.Server'
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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + '.EntryGroup'
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IF_UNSPEC = -1
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PROTO_UNSPEC = -1
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def publish_cname(self, cname):
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"""Call this method for each alias to publish as a CNAME record."""
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bus = dbus.SystemBus()
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server = dbus.Interface(bus.get_object(self.DBUS_NAME, self.DBUS_PATH_SERVER),
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self.DBUS_INTERFACE_SERVER)
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group = dbus.Interface(bus.get_object(self.DBUS_NAME, server.EntryGroupNew()),
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self.DBUS_INTERFACE_ENTRY_GROUP)
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rdata = self.create_rr(server.GetHostNameFqdn())
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cname = self.encode_dns(cname)
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group.AddRecord(self.IF_UNSPEC, self.PROTO_UNSPEC, dbus.UInt32(0),
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cname, self.CLASS_IN, self.TYPE_CNAME, self.TTL, rdata)
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group.Commit()
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print("Published " + cname.decode())
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@staticmethod
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def encode_dns(name):
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"""Internal"""
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out = []
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name = name.decode()
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for part in str(name).split('.'):
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if len(part) == 0:
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continue
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out.append(ToASCII(part))
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return b'.'.join(out)
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@staticmethod
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def create_rr(name):
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"""Internal"""
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out = []
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for part in name.split('.'):
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if len(part) == 0:
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continue
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out.append(chr(len(part)).encode())
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out.append(ToASCII(part))
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out.append(b'\0')
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return b''.join(out)
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@@ -1,20 +0,0 @@
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[build-system]
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requires = ["setuptools>=42", "wheel"]
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#build-backend = "setuptools.build_meta"
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[project]
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name = "mdns-alias"
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version = "1.0"
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description = "Request mDNS-SD CNAME over D-Bus to Avahi."
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authors = [{name = "Joachim Wiberg", email = "troglobit@gmail.com"}]
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license = {file = "LICENSE"}
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readme = "README.md"
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dependencies = [
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"dbus",
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]
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#[tool.setuptools.packages.find]
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#where = ["mdns_alias"]
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[project.scripts]
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mdns-alias = "mdns_alias:main"
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