ci: do not rely on TREZOR_PATH, use switch ports instead

As the connected Trezors can be left in various weird states, trezorctl
list may not always return what is expected or even fail. If it failed
TREZOR_PATH was set to empty string which means random device got
selected.

For now let's avoid using incorrect device by powering down the other
usb port.

Fix log lines ordering.

ci/hardware_tests/bootstrap.py

@@ -16,12 +16,16 @@ def main(model: str, file: str = None):
     tt = TrezorT(config["tt"]["uhub_location"], config["tt"]["port"])
 
     if model == "t1":
-        t1.update_firmware(file)
+        tt.power_off()
+        path = t1.update_firmware(file)
     elif model == "tt":
-        tt.update_firmware(file)
+        t1.power_off()
+        path = tt.update_firmware(file)
     else:
         raise ValueError("Unknown Trezor model.")
 
+    print(path)
+
 
 if __name__ == "__main__":
     model = sys.argv[1]

ci/hardware_tests/device/device.py

@@ -1,6 +1,7 @@
 import datetime
-import os
+import sys
 import time
+from subprocess import run
 
 
 class Device:
@@ -8,14 +9,28 @@ class Device:
         self.uhub_location = uhub_location
         self.device_port = device_port
 
-    def run_trezorctl(self, cmd: str):
+    @staticmethod
+    def log(msg):
+        print(msg, flush=True, file=sys.stderr)
+
+    def run_trezorctl(self, cmd: str, **kwargs):
         full_cmd = "trezorctl "
         full_cmd += cmd
-        print("[software/trezorctl] Running '{}'".format(full_cmd))
-        os.system(full_cmd)
+        self.log("[software/trezorctl] Running '{}'".format(full_cmd))
+        return run(full_cmd, shell=True, check=True, **kwargs)
 
-    def check_version(self):
+    def check_model(self, model=None):
+        res = self.run_trezorctl("list", capture_output=True, text=True).stdout
+        self.log(res)
         self.run_trezorctl("get-features | grep version")
+        lines = res.splitlines()
+        if len(lines) != 1:
+            raise RuntimeError("{} trezors connected".format(len(lines)))
+        if model and model not in lines[0]:
+            raise RuntimeError(
+                "invalid trezor model connected (expected {})".format(model)
+            )
+        return lines[0].split()[0]
 
     def reboot(self):
         self.power_off()
@@ -23,19 +38,23 @@ class Device:
 
     def power_on(self):
         self.now()
-        print("[hardware/usb] Turning power on...")
-        os.system(
-            "uhubctl -l {} -p {} -a on".format(self.uhub_location, self.device_port)
+        self.log("[hardware/usb] Turning power on...")
+        run(
+            "uhubctl -l {} -p {} -a on".format(self.uhub_location, self.device_port),
+            shell=True,
+            check=True,
         )
         self.wait(3)
 
     def power_off(self):
         self.now()
-        print("[hardware/usb] Turning power off...")
-        os.system(
+        self.log("[hardware/usb] Turning power off...")
+        run(
             "uhubctl -l {} -p {} -r 100 -a off".format(
                 self.uhub_location, self.device_port
-            )
+            ),
+            shell=True,
+            check=True,
         )
         self.wait(3)
 
@@ -45,9 +64,9 @@ class Device:
     @staticmethod
     def wait(seconds):
         Device.now()
-        print("[software] Waiting for {} seconds...".format(seconds))
+        Device.log("[software] Waiting for {} seconds...".format(seconds))
         time.sleep(seconds)
 
     @staticmethod
     def now():
-        print("\n[timestamp] {}".format(datetime.datetime.now()))
+        Device.log("\n[timestamp] {}".format(datetime.datetime.now()))

ci/hardware_tests/device/t1.py

@@ -10,7 +10,7 @@ class TrezorOne(Device):
 
     def touch(self, location, action):
         self.now()
-        print(
+        self.log(
             "[hardware/trezor] Touching the {} button by {}...".format(location, action)
         )
         self.serial.write(("{} {}\n".format(location, action)).encode())
@@ -19,14 +19,16 @@ class TrezorOne(Device):
         if file:
             unofficial = True
             trezorctlcmd = "firmware-update -s -f {} &".format(file)
-            print("[software] Updating the firmware to {}".format(file))
+            self.log("[software] Updating the firmware to {}".format(file))
         else:
             unofficial = False
             trezorctlcmd = "firmware-update &"
-            print("[software] Updating the firmware to latest")
+            self.log("[software] Updating the firmware to latest")
         self.wait(3)
         self._enter_bootloader()
 
+        self.run_trezorctl("list")
+
         self.wait(3)
         self.run_trezorctl(trezorctlcmd)
         self.wait(3)
@@ -42,7 +44,7 @@ class TrezorOne(Device):
             self.wait(5)
             self.touch("right", "click")
         self.wait(5)
-        self.check_version()
+        return self.check_model("Trezor 1")
 
     def _enter_bootloader(self):
         self.power_off()

ci/hardware_tests/device/tt.py

@@ -7,15 +7,17 @@ class TrezorT(Device):
         self.power_off()
         self.power_on()
 
+        self.run_trezorctl("list")
+
         if not file:
             raise ValueError(
                 "Uploading production firmware will replace the bootloader, it is not allowed!"
             )
 
         self.wait(5)
-        print("[software] Updating the firmware to {}".format(file))
+        self.log("[software] Updating the firmware to {}".format(file))
         self.run_trezorctl("firmware-update -s -f {}".format(file))
 
         # after firmware-update finishes wait for reboot
         self.wait(15)
-        self.check_version()
+        return self.check_model("Trezor T")

ci/hardware_tests/get_trezor_path.sh

@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-
-if [ $# -ne 1 ]
-  then
-    echo "Usage: $0 [model]"
-    exit 1
-fi
-
-nix-shell --run "pipenv run trezorctl list | grep '$1' | cut -d' ' -f1 | tr -d '\n'"

ci/hardware_tests/t1_hw_test.sh

@@ -12,9 +12,6 @@ set -x # trace commands
 
 ./record_video.sh ${CI_COMMIT_SHORT_SHA} start
 (cd ../.. && poetry install)
-poetry run trezorctl -v list
-export TREZOR_PATH=$(./get_trezor_path.sh 'Trezor 1')
-echo $TREZOR_PATH
 poetry run python bootstrap.py t1
 poetry run python bootstrap.py t1 ../../trezor-*.bin
 poetry run pytest ../../tests/device_tests

ci/test.yml

@@ -325,9 +325,6 @@ hardware core btconly device test:
   script:
     - cd ci/hardware_tests
     - nix-shell --run "cd ../.. && poetry install"
-    - nix-shell --run "poetry run trezorctl list"
-    - export TREZOR_PATH=$(./get_trezor_path.sh 'Trezor T')
-    - nix-shell --run "echo $TREZOR_PATH"
     - nix-shell --run "poetry run python bootstrap.py tt ../../trezor-*.bin"
     - nix-shell --run "poetry run pytest ../../tests/device_tests -m 'not sd_card' -k 'not 15_of_15 and not test_multisig_mismatch_inputs'"
   timeout: 4h