dan
218b7cdb27
ble: encrypt wifi password
...
BLE "just works" pairing dos not protect against active MITM,
so we need to handle this ourselves. Use nacl/libsodium
crypto_box to encrypt and authenticate the wifi password
this also adds a step to the interaction between client and device:
after writing the password, we now write a "true" to the "connecting"
characteristic to kick off the actual conection attempt.
2026-02-17 12:37:59 +00:00
dan
4be5521504
ble: remove unused connection_state attribute
2026-02-15 17:56:18 +00:00
dan
48968551cc
add getrandom 0.2.17 with custom source
2026-02-14 20:34:14 +00:00
dan
a892593ea5
sense-check docs and comments
2026-02-04 18:59:46 +00:00
dan
671c2a382c
reset after configuring wifi, and if if doesn't work
2026-02-04 18:42:49 +00:00
dan
d79b32c8bf
delete unused imports
2026-02-04 18:35:20 +00:00
dan
cee50cd4a8
delete dead commented cde
2026-02-04 17:54:25 +00:00
dan
601c7391a3
write selected wifi credentials to flash nvs
...
todo
- reboot after writing
- delete bad networks after failing to connect
2026-02-04 00:37:24 +00:00
dan
2cfe436ac9
scan wireless networks & publish over ble
...
does not actually connect yet
2026-02-02 21:19:39 +00:00
dan
dcaa927ab1
don't need ssid and password to do a wifi scan
2026-02-01 22:54:29 +00:00
dan
6c4d64ce0e
demonstrate reading/writing a characteristic
2026-02-01 16:45:53 +00:00
dan
f25a539084
log when current_network_index is changed
2026-02-01 16:43:45 +00:00
dan
a729199926
PoC BLE support
...
It advertises, and it enumerates some characteristics. None of them
are hooked up to anthing yet
2026-02-01 15:27:30 +00:00
dan
13b0868488
esp_radio Controller is shared between wifi, ble
...
in preparation for adding ble, move its creation into main and
pass the object into wifi
2026-02-01 00:17:24 +00:00
dan
923dbe6fa9
add session registration with signature checking
2026-01-29 19:10:07 +00:00
dan
e6e7030ba6
fix ota_write_chnk bug
...
somehow hadn't spotted we were not writing the start of the data, oops
2026-01-26 00:25:05 +00:00
dan
fb59198f70
remove read_all, shorten using Result
...
this has made the "can't happen" error messages a bit less helpful
but we will come back to that
2026-01-25 00:44:03 +00:00
dan
0d86c64134
replace read_all with socket.read_exact
2026-01-24 22:20:49 +00:00
dan
04b71489b1
replace join(join) with join3
2026-01-24 00:09:45 +00:00
dan
14045825f3
extract module for ota flashing
2026-01-23 23:57:25 +00:00
dan
3a0dbe5c90
sign firmware with chained hashes
...
signing each block individually is slow (well, verifying is slow) and
doesn't protect against a MITM e.g. reordering or dropping
blocks. Instead we use the technique described in "How to Sign Digital
Streams (Gennaro, Rohatgi) where only the _first_ block is
cryptographically signed but each block contains a sha256 hash of its
successor block.
https://users.ece.cmu.edu/~adrian/731-sp04/readings/gr-stream-sig.pdf
2026-01-23 19:38:39 +00:00
dan
2f517e991d
remove tabs
2026-01-23 19:17:19 +00:00
dan
a3edd49f10
check signature on each block
2026-01-21 21:42:26 +00:00
dan
cc9bf7897c
rearrange OTA message format to sign each block
2026-01-21 18:32:57 +00:00
dan
d50244ceb0
ota: buffer data flash full erase blocks
...
this speeds it up a lot because it's not doing mutiple erases for the
same block
2026-01-20 18:54:48 +00:00
dan
b9d02b07b5
OTA support (replace stub)
2026-01-19 21:09:58 +00:00
dan
b58453f9e7
add BUILD_ID env var so we can see if OTA worked
2026-01-19 21:06:27 +00:00
dan
235dd59bdc
delete unused and commented-out code
2026-01-18 23:16:39 +00:00
dan
c8dd5e0414
add tcp listener for OTA updating and session keys
...
* actual OTA updating not yet implemented, we read from the socket and
throw the data away
* session keys are ignored
2026-01-16 23:24:27 +00:00
dan
40536c8dca
write timestamp at front of each response
2026-01-12 21:57:50 +00:00
dan
9be9d167c3
mdns implementation notes
2026-01-12 18:00:05 +00:00
dan
cdf7209c21
rename project
2026-01-11 20:20:00 +00:00
dan
fd9b558d4c
table subscriptions can have start/end
2026-01-08 00:03:45 +00:00
dan
71460edfdb
rearrange subscriber and subscription
2026-01-07 23:50:35 +00:00
dan
4fead34199
stop sending to peer if we haven't heard from it for 60s
...
this is udp so there is no way to test if it has closed the
connection - instead we expect it to periodically refresh
2026-01-05 21:09:39 +00:00
dan
721dbbf06b
we need to bump this number whenever we add a socket
2026-01-05 21:02:16 +00:00
dan
400ac33517
open udp socket, write table 0x11 to any peer that sends us data
...
TODO: actually parse the message from the peer in case they want
somethng other than table 0x11
2026-01-05 21:01:00 +00:00
dan
18e3c406ec
remove unnecessary use
2026-01-05 13:18:52 +00:00
dan
bba38102a4
new fn mdns::responder()
...
wraps up everything including socket creation. this was supposed to be
a thread but I haven't figured that out yet: it doesn't matter yet as
there isn't anmything else we're doing at the same time
2026-01-04 23:22:38 +00:00
dan
b65218b0f4
remove Mdns prefix from Responder{,State}
2026-01-02 21:50:16 +00:00
dan
7e5e7c201d
rename DnsResource as Resource and alias in client
2026-01-02 21:49:27 +00:00
dan
400e2e1e14
rename DnsDatabase -> Database
2026-01-02 21:27:07 +00:00
dan
acd356a7e5
DnsDatabase can be a tuple struct
2026-01-02 20:52:02 +00:00
dan
d3a46d5969
make DnsDatabase private
2026-01-02 20:39:47 +00:00
dan
31306f258d
extract mdns into separate file
2026-01-02 20:27:48 +00:00
dan
59c2bb1ba1
rename var
2026-01-02 20:20:10 +00:00
dan
cd63386282
pass records into DnsDatabase instead of making htem up
2026-01-02 19:43:38 +00:00
dan
4219991e1c
move probe failure handling up the call stack
...
instead of handling name collision inside MdnsResponder, pass the
error back to the caller which is better placed to decide how to
change the records
2026-01-02 19:20:33 +00:00
dan
fe81d1f617
pass socket into MdnsResponder
...
we otherwise have to pass in the buffers it uses so it's hardly like
we're hiding it.
2026-01-02 19:09:35 +00:00
dan
4fcd921943
whitespace
2026-01-01 16:43:28 +00:00
dan