eculocate

commit 1d03cfdd39c17de3c009320b2a4ecf678e8202dc
parent 25fffe6ae7525c139d1534e31c93967aa8350513
Author: Daniel Barlow <dan@telent.net>
Date:   Tue, 20 Jan 2026 23:38:49 +0000

convert otaclient to python

it seems easier than packaging the ruby ed25519 gem in nix

Diffstat:
M
Makefile
 | 
2
+-
A
otaclient.py
 | 
33
+++++++++++++++++++++++++++++++++
M
shell.nix
 | 
7
+++++--

3 files changed, 39 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile
@@ -11,7 +11,7 @@ ota.bin: $(IMAGE)
 	espflash save-image --chip esp32c3 $< $@
 
 install: ota.bin
-	time ruby otaclient.rb $<
+	time python otaclient.py $<
 
 privkey.pem:
 	openssl genpkey -algorithm ed25519 -out privkey.pem
diff --git a/otaclient.py b/otaclient.py
@@ -0,0 +1,33 @@
+import socket
+import struct
+import sys
+
+sock = socket.create_connection(("eculocate.local", 5000))
+
+with open(sys.argv[1], "rb") as f:
+    rom_image = f.read()
+
+image_len = len(rom_image)
+
+# Build payload
+payload = (
+    b"ROM0" +
+    (b"z" * 64) +
+    struct.pack(">L", image_len) +
+    rom_image
+)
+
+# Send payload
+sock.sendall(payload)
+
+# Read a line from the socket (until newline)
+response = b""
+while not response.endswith(b"\n"):
+    chunk = sock.recv(1)
+    if not chunk:
+        break
+    response += chunk
+
+print(response.decode(errors="replace"))
+
+sock.close()
diff --git a/shell.nix b/shell.nix
@@ -4,7 +4,10 @@
     libPath = with pkgs; lib.makeLibraryPath [
       # load external libraries that you need in your rust project here
     ];
-in
+    python = (pkgs.python3.withPackages (python-pkgs: [
+      python-pkgs.ed25519
+    ]));
+  in
   pkgs.mkShell rec {
     buildInputs = with pkgs; [
       clang
@@ -13,7 +16,7 @@ in
       rustup
 
       entr
-      ruby
+      python
       openssl
     ];
     RUSTC_VERSION = overrides.toolchain.channel;