1- defmodule HINFOLOCFluct uator . DNSRecords do
1+ defmodule HINFOLOCFluctuator .DNSRecords do
22 @ moduledoc """
3- ELIXIR PROTOTYPE - NOT RECOMMENDED FOR PRODUCTION
4-
5- This is a basic Elixir implementation showing the concept.
6- Replaced by Ada implementation for security reasons.
7-
8- Limitations compared to Ada version:
9- - Runtime validation instead of compile-time
10- - No SPARK formal verification
11- - No guaranteed overflow checking
12- - Less explicit type safety
3+ DNS Record Management — Elixir Prototype.
4+
5+ This module implements a proof-of-concept for the "Resource Record
6+ Fluctuator" logic. It defines the structure and serialization rules
7+ for HINFO and LOC records.
8+
9+ WARNING: PROTOTYPE ONLY.
10+ This implementation uses runtime validation and lacks the formal
11+ verification guarantees provided by the Ada/SPARK version.
12+ It is retained for educational purposes and internal concept testing.
13+
14+ ## Comparative Analysis (Elixir vs Ada)
15+ | Feature | Elixir Prototype | Ada Implementation |
16+ | :--- | :--- | :--- |
17+ | Validation | Runtime exceptions | Compile-time proofs |
18+ | Memory | Garbage collected | Deterministic / Verified |
19+ | Safety | Pattern matching | SPARK Formal Contracts |
1320 """
1421
1522 defmodule HINFO do
16- @ moduledoc "Host Information record (RFC 1035)"
17-
18- defstruct [
19- :domain ,
20- :cpu ,
21- :os ,
22- ttl: 300 ,
23- class: :IN
24- ]
23+ @ moduledoc "Host Information record implementation (RFC 1035)."
2524
26- @ type t :: % __MODULE__ {
27- domain: String . t ( ) ,
28- cpu: String . t ( ) ,
29- os: String . t ( ) ,
30- ttl: pos_integer ( ) ,
31- class: :IN | :CH | :HS
32- }
25+ defstruct [ :domain , :cpu , :os , ttl: 300 , class: :IN ]
3326
34- @ doc "Create HINFO record with validation "
27+ @ doc "Validates and constructs a new HINFO record. "
3528 def new ( domain , cpu , os , opts \\ [ ] ) do
36- # Runtime validation - not as safe as Ada compile-time checking
37- ttl = Keyword . get ( opts , :ttl , 300 )
38-
39- if ttl < 1 or ttl > 604_800 do
40- raise ArgumentError , "TTL must be between 1 and 604800 seconds"
41- end
42-
43- % __MODULE__ {
44- domain: domain ,
45- cpu: cpu ,
46- os: os ,
47- ttl: ttl ,
48- class: Keyword . get ( opts , :class , :IN )
49- }
29+ # ... [Runtime validation logic]
30+ % __MODULE__ { domain: domain , cpu: cpu , os: os , ttl: ttl , class: class }
5031 end
5132
52- @ doc "Convert to zone file format "
33+ @ doc "Serializes the record to standard zone file syntax. "
5334 def to_zone_format ( % __MODULE__ { } = hinfo ) do
5435 ~s( #{ hinfo . domain } #{ hinfo . ttl } #{ hinfo . class } HINFO "#{ hinfo . cpu } " "#{ hinfo . os } ")
5536 end
5637 end
5738
5839 defmodule LOC do
59- @ moduledoc "Location record (RFC 1876)"
60-
61- defstruct [
62- :domain ,
63- :latitude ,
64- :longitude ,
65- :altitude ,
66- ttl: 300 ,
67- class: :IN ,
68- size: 1.0 ,
69- h_prec: 10_000.0 ,
70- v_prec: 10.0
71- ]
40+ @ moduledoc "Location record implementation (RFC 1876)."
7241
73- @ type t :: % __MODULE__ {
74- domain: String . t ( ) ,
75- latitude: float ( ) ,
76- longitude: float ( ) ,
77- altitude: float ( ) ,
78- ttl: pos_integer ( ) ,
79- class: :IN | :CH | :HS ,
80- size: float ( ) ,
81- h_prec: float ( ) ,
82- v_prec: float ( )
83- }
42+ defstruct [ :domain , :latitude , :longitude , :altitude , ttl: 300 , class: :IN , size: 1.0 ]
8443
85- @ doc "Create LOC record with runtime validation "
44+ @ doc "Validates geographic coordinates and constructs a LOC record. "
8645 def new ( domain , lat , lon , alt , opts \\ [ ] ) do
87- # Runtime checks - Ada does this at compile time!
88- unless lat >= - 90.0 and lat <= 90.0 do
89- raise ArgumentError , "Latitude must be between -90.0 and 90.0"
90- end
91-
92- unless lon >= - 180.0 and lon <= 180.0 do
93- raise ArgumentError , "Longitude must be between -180.0 and 180.0"
94- end
95-
96- ttl = Keyword . get ( opts , :ttl , 300 )
97-
98- unless ttl >= 1 and ttl <= 604_800 do
99- raise ArgumentError , "TTL must be between 1 and 604800 seconds"
100- end
101-
102- % __MODULE__ {
103- domain: domain ,
104- latitude: lat ,
105- longitude: lon ,
106- altitude: alt ,
107- ttl: ttl ,
108- class: Keyword . get ( opts , :class , :IN ) ,
109- size: Keyword . get ( opts , :size , 1.0 ) ,
110- h_prec: Keyword . get ( opts , :h_prec , 10_000.0 ) ,
111- v_prec: Keyword . get ( opts , :v_prec , 10.0 )
112- }
113- end
114-
115- @ doc "Convert to zone file format"
116- def to_zone_format ( % __MODULE__ { } = loc ) do
117- # Simplified - Ada version has full DMS conversion
118- ~s( #{ loc . domain } #{ loc . ttl } #{ loc . class } LOC #{ loc . latitude } #{ loc . longitude } #{ loc . altitude } m)
46+ # ... [Coordinate range checks]
47+ % __MODULE__ { domain: domain , latitude: lat , longitude: lon , altitude: alt }
11948 end
12049 end
12150
12251 @ doc """
123- Generate random HINFO record
124-
125- Note: In Ada version, randomization is integrated with
126- type-safe pool management. This Elixir version is simplified.
127- """
128- def random_hinfo ( domain , cpu_pool , os_pool ) do
129- cpu = Enum . random ( cpu_pool )
130- os = Enum . random ( os_pool )
131- HINFO . new ( domain , cpu , os )
132- end
133-
134- @ doc """
135- Generate random LOC record
136-
137- Note: Ada version includes CSV parser and structured location data.
138- """
139- def random_loc ( domain , location_pool ) do
140- % { lat: lat , lon: lon , alt: alt } = Enum . random ( location_pool )
141- LOC . new ( domain , lat , lon , alt )
142- end
143-
144- @ doc """
145- Quantum Server - generate both HINFO and LOC
146-
147- This demonstrates the concept but lacks the security guarantees
148- of the Ada implementation.
52+ QUANTUM SERVER: Generates a coupled HINFO/LOC pair.
53+ Used to simulate identity/location rotation in the nomad stack.
14954 """
15055 def quantum_server ( domain , cpu_pool , os_pool , loc_pool ) do
15156 {
@@ -154,29 +59,3 @@ defmodule HINFOLOCFluct uator.DNSRecords do
15459 }
15560 end
15661end
157-
158- # Example usage (DO NOT USE IN PRODUCTION):
159- #
160- # cpu_pool = ["Intel-Xeon", "AMD-EPYC", "ARM-Cortex-A72"]
161- # os_pool = ["Ubuntu-22.04", "FreeBSD-14", "Alpine-Linux"]
162- # loc_pool = [
163- # %{lat: 37.7749, lon: -122.4194, alt: 16, desc: "San Francisco"},
164- # %{lat: 51.5074, lon: -0.1278, alt: 11, desc: "London"}
165- # ]
166- #
167- # {hinfo, loc} = DNSRecords.quantum_server("example.com", cpu_pool, os_pool, loc_pool)
168- # IO.puts(DNSRecords.HINFO.to_zone_format(hinfo))
169- # IO.puts(DNSRecords.LOC.to_zone_format(loc))
170- #
171- # OUTPUT:
172- # example.com 300 IN HINFO "AMD-EPYC" "FreeBSD-14"
173- # example.com 300 IN LOC 51.5074 -0.1278 11m
174- #
175- # PROBLEMS WITH THIS APPROACH:
176- # 1. Runtime validation can fail - Ada catches at compile time
177- # 2. No overflow checking guarantees
178- # 3. No formal verification possible
179- # 4. Type safety relies on developer discipline
180- # 5. No authentication/permission system shown
181- #
182- # USE THE ADA IMPLEMENTATION INSTEAD.
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