Add my bird role

9 files changed, 426 insertions, 0 deletions

diff --git a/roles/uvok_bird/README.md b/roles/uvok_bird/README.md
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+Role Name
+=========
+
+Start up my bird setup.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+None
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+MIT
+
+Author Information
+------------------
+
+uvok (https://blog.uvokchee.de/).
\ No newline at end of file
diff --git a/roles/uvok_bird/defaults/main.yml b/roles/uvok_bird/defaults/main.yml
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+---
+# defaults file for bird
+uvok_bird_opts:
+  config_dir: "/tmp/bird/"
+  clearnet: false
+  dn42: false
+  use_fallback: false
+  preferred_ip: "::1"
+  prefixes: []
+  babel_if_name: 
diff --git a/roles/uvok_bird/handlers/main.yml b/roles/uvok_bird/handlers/main.yml
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+---
+# handlers file for uvok_bird
+
+- name: Check config
+  command: birdc configure check
+  listen: configure bird
+- name: apply config
+  command: birdc configure soft
+  listen: configure bird
diff --git a/roles/uvok_bird/meta/main.yml b/roles/uvok_bird/meta/main.yml
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+++ b/roles/uvok_bird/meta/main.yml
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+galaxy_info:
+  author: uvok
+  description: Start up my bird setup. Probably won't fit your needs.
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: MIT
+
+  min_ansible_version: "2.16"
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.
diff --git a/roles/uvok_bird/tasks/main.yml b/roles/uvok_bird/tasks/main.yml
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+++ b/roles/uvok_bird/tasks/main.yml
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+---
+# tasks file for uvok_bird
+- name: Ensure bird directory exists
+  ansible.builtin.file:
+    path: '{{ uvok_bird_opts.config_dir }}'
+    state: directory
+    mode: '0750'
+    owner: 'bird'
+    group: 'bird'
+- name: Install template
+  template:
+    src: clearnet.conf.j2
+    dest: '{{ uvok_bird_opts.config_dir }}/clearnet.conf'
+    mode: '0640'
+    owner: 'bird'
+    group: 'bird'
+  when:
+    - uvok_bird_opts.clearnet
+  notify: configure bird
diff --git a/roles/uvok_bird/templates/clearnet.conf.j2 b/roles/uvok_bird/templates/clearnet.conf.j2
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+++ b/roles/uvok_bird/templates/clearnet.conf.j2
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+# {{ ansible_managed }}
+
+define CLEARNET_PREFIP = {{ uvok_bird_opts.preferred_ip }};
+
+# trs=transit
+ipv6 table t_myas_unfiltered;
+ipv6 table t_myas_trs;
+ipv6 table t_myas_babel;
+
+roa6 table clear_roa_v6;
+
+protocol rpki roa_clearnet1 {
+    roa6 { table clear_roa_v6; };
+    remote 10.2.0.1;
+    port 8282;
+    refresh 3600;
+    retry 600;
+    expire 7200;
+}
+
+protocol rpki roa_clearnet2 {
+    roa6 { table clear_roa_v6; };
+    remote 10.2.0.10;
+    port 8282;
+    refresh 3600;
+    retry 600;
+    expire 7200;
+}
+
+define BOGON_ASNS = [
+  0,                      # RFC 7607
+  23456,                  # RFC 4893 AS_TRANS
+  64496..64511,           # RFC 5398 and documentation/example ASNs
+  64512..65534,           # RFC 6996 Private ASNs
+  65535,                  # RFC 7300 Last 16 bit ASN
+  65536..65551,           # RFC 5398 and documentation/example ASNs
+  65552..131071,          # RFC IANA reserved ASNs
+  4200000000..4294967294, # RFC 6996 Private ASNs
+  4294967295 ];           # RFC 7300 Last 32 bit ASN
+
+define BOGON_PREFIXES = [ ::/0,                          # Default route
+                          ::/8+,                         # RFC 4291 IPv4-compatible, loopback, et al
+                          0100::/64+,                    # RFC 6666 Discard-Only
+                          2001:2::/48+,                  # RFC 5180 BMWG
+                          2001:10::/28+,                 # RFC 4843 ORCHID
+                          2001:db8::/32+,                # RFC 3849 documentation
+                          2002::/16+,                    # RFC 7526 6to4 anycast relay
+                          3ffe::/16+,                    # RFC 3701 old 6bone
+                          fc00::/7+,                     # RFC 4193 unique local unicast
+                          fe80::/10+,                    # RFC 4291 link local unicast
+                          fec0::/10+,                    # RFC 3879 old site local unicast
+                          ff00::/8+                      # RFC 4291 multicast
+ ];
+
+function reject_bogon_asns()
+int set bogon_asns;
+{
+  bogon_asns = BOGON_ASNS;
+
+  if ( bgp_path ~ bogon_asns ) then {
+    print "Reject: bogon AS_PATH: ", net, " ", bgp_path;
+    clearnet_add_filter(FILTER_BOGON_ASN);
+  }
+}
+
+function reject_bogon_prefixes()
+prefix set bogon_prefixes;
+{
+    bogon_prefixes = BOGON_PREFIXES;
+    if (net ~ bogon_prefixes) then {
+        print "Reject: Bogon prefix: ", net, " ", bgp_path;
+        clearnet_add_filter(FILTER_BOGON_PREFIX);
+    }
+}
+
+define PROBLEM_PREFIXES = [
+];
+
+function reject_problem_prefixes()
+prefix set problem_prefixes;
+{
+    problem_prefixes = PROBLEM_PREFIXES;
+    if (net ~ problem_prefixes) then {
+        print "Reject: Problematic prefix: ", net, " ", bgp_path;
+        clearnet_add_filter(FILTER_PROBLEM_PREFIX);
+    }
+}
+
+function reject_long_aspaths()
+{
+    if ( bgp_path.len > 50 ) then {
+        clearnet_add_filter(FILTER_LONG_ASPATH);
+    }
+}
+
+function reject_small_prefixes()
+{
+  if (net.len > 55 && net.type = NET_IP6) then {
+    print "Reject: Too small prefix: ", net, " ", bgp_path;
+    clearnet_add_filter(FILTER_SMALL_V6_PREFIX);
+  }
+}
+
+function reject_roa_rpki()
+{
+    if ( roa_check(clear_roa_v6, net, bgp_path.last_nonaggregated) = ROA_INVALID ) then {
+        clearnet_add_filter(FILTER_ROA_RPKI);
+    }
+}
+
+function clearnet_common_import() {
+    reject_bogon_asns();
+    reject_bogon_prefixes();
+    reject_long_aspaths();
+    reject_small_prefixes();
+    reject_problem_prefixes();
+    reject_roa_rpki();
+    honor_graceful_shutdown();
+}
+
+filter myas_export
+{
+    if (proto = "myprefix") then {
+        accept;
+    }
+    reject;
+}
+
+# route collector
+filter myas_f_rc
+{
+# export IXP routes after all
+#    if ( clearnet_is_ixp() ) then reject;
+    if (source = RTS_BGP) then accept;
+    if (proto = "myprefix") then accept;
+    reject;
+};
+
+protocol static myprefix {
+{% for prefix in uvok_bird_opts.prefixes %}
+    route {{ prefix }} reject;
+{% endfor %};
+
+    ipv6 {
+        # needs to be in unfiltered - because that's where I'm exporting from
+        table t_myas_unfiltered;
+        import all;
+        export none;
+    };
+}
+
+protocol direct {
+    ipv6 { table t_myas_babel; };
+    interface "myas_int";
+};
+
+template bgp pt_clearnet {
+    local as CLEARNET_ASN;
+
+    graceful restart on;
+    long lived graceful restart on;
+
+    prefer older on;
+
+    # Neighbor as must be first route as
+    enforce first as on;
+    # faster updates
+    enable extended messages on;
+
+    # defaults anyway
+    enable route refresh on;
+    interpret communities on;
+    direct;
+
+    # higher better
+    default bgp_local_pref 100;
+
+    # my value - lower better
+    default bgp_med 100;
+
+    ipv6 {
+        # start by importing into the unfiltered table
+        table t_myas_unfiltered;
+
+        # for inspection who's evil
+        import keep filtered;
+        # for RPKI / ROA
+        import table on;
+
+        import filter {
+            clearnet_import_transit();
+            clearnet_common_import();
+            accept;
+        };
+
+        export filter myas_export;
+    };
+}
+
+# route collector
+template bgp pt_rc from pt_clearnet {
+    multihop;
+
+    # yes, use unfiltered table for export
+    # I wanna shame garbish announcers publically! ;)
+    ipv6 {
+        add paths tx;
+        import none;
+        export filter myas_f_rc;
+    };
+}
+
+{% if uvok_bird_opts.babel_if_name %}
+protocol babel p_myas_babel {
+  ipv6 {
+    table t_myas_babel;
+    import where source ~ [RTS_DEVICE, RTS_BABEL];
+    export where source ~ [RTS_DEVICE, RTS_BABEL];
+  };
+
+  interface "{{ uvok_bird_opts.babel_if_name }}" {
+  };
+}
+{% endif %}
+
+# pipe babel table => bgp table for next-hop resolution?
+protocol pipe {
+    table t_myas_babel;
+    peer table t_myas_trs;
+    import none;
+    export where source ~ [RTS_BABEL];
+}
+
+# EXPORT FROM unfilteed TO filtered trs table
+protocol pipe {
+    table t_myas_unfiltered;
+    peer table t_myas_trs;
+    import none;
+    export filter {
+        if ( bgp_large_community ~ [(CLEARNET_ASN, LC_FILTERED, *)] ) then {
+            reject;
+        }
+        accept;
+    };
+}
+
+protocol kernel p_myas_i {
+#    scan time 20;
+    kernel table 150;
+
+    ipv6 {
+        table t_myas_babel;
+        import none;
+        export filter {
+            if (source != RTS_BABEL) then {
+                print "SHOULD NOT HAPPEN: export babel to kernel: ", net, " from", source;
+                reject;
+            }
+            krt_prefsrc = CLEARNET_PREFIP;
+            accept;
+        };
+    };
+};
+
+protocol kernel pk_myas_out {
+    kernel table 100;
+
+    ipv6 {
+        table t_myas_trs;
+        import none;
+        export filter {
+            krt_prefsrc = CLEARNET_PREFIP;
+            if (source = RTS_BGP) then {
+                accept;
+            }
+{% if uvok_bird_opts.use_fallback %}
+            if (proto = "myas_def_fallb") then {
+                accept;
+            }
+{% endif %}
+            reject;
+        };
+    };
+};
+
+include "/etc/bird/clear_peers/*.conf";
+{% if uvok_bird_opts.use_fallback %}
+include "clear_fallback.conf";
+{% endif %}
diff --git a/roles/uvok_bird/tests/inventory b/roles/uvok_bird/tests/inventory
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+localhost
+
diff --git a/roles/uvok_bird/tests/test.yml b/roles/uvok_bird/tests/test.yml
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+++ b/roles/uvok_bird/tests/test.yml
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+---
+- name: "Test play?"
+  hosts: localhost
+  remote_user: root
+  roles:
+    - uvok_bird
diff --git a/roles/uvok_bird/vars/main.yml b/roles/uvok_bird/vars/main.yml
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+++ b/roles/uvok_bird/vars/main.yml
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+---
+# vars file for uvok_bird