fix: on-device installs, rmpp 3.20 downgrade regression. Fixes #158

codexctl/__init__.py

@@ -261,7 +261,7 @@ def version_lookup(version: str | None) -> re.Match[str] | None:
                 if update_file:
                     try:
                         from remarkable_update_image import UpdateImage
-                        from remarkable_update_image.cpio import UpdateImage as CPIOUpdateImage
+                        from remarkable_update_image.image import CPIOUpdateImage
 
                         image = UpdateImage(update_file)
                         if isinstance(image, CPIOUpdateImage):

codexctl/device.py

@@ -2,6 +2,7 @@
 import logging
 import os
 import re
+import shlex
 import socket
 import subprocess
 import tempfile
@@ -291,11 +292,11 @@ def connect_to_device(
 
         return client
 
-    def _read_version_from_path(self, ftp, base_path: str = "") -> tuple[str, bool]:
+    def _read_version_from_path(self, ftp=None, base_path: str = "") -> tuple[str, bool]:
         """Reads version from a given path (current partition or mounted backup)
 
         Args:
-            ftp: SFTP client connection
+            ftp: SFTP client connection (None for local file access)
             base_path: Base path prefix (empty for current partition, /tmp/mount_pX for backup)
 
         Returns:
@@ -304,76 +305,133 @@ def _read_version_from_path(self, ftp, base_path: str = "") -> tuple[str, bool]:
         update_conf_path = f"{base_path}/usr/share/remarkable/update.conf" if base_path else "/usr/share/remarkable/update.conf"
         os_release_path = f"{base_path}/etc/os-release" if base_path else "/etc/os-release"
 
-        def file_exists(path: str) -> bool:
-            try:
-                ftp.stat(path)
-                return True
-            except FileNotFoundError:
-                return False
+        if ftp:
+            def file_exists(path: str) -> bool:
+                try:
+                    ftp.stat(path)
+                    return True
+                except FileNotFoundError:
+                    return False
+
+            def read_file(path: str) -> str:
+                with ftp.file(path) as file:
+                    return file.read().decode("utf-8")
+        else:
+            file_exists = os.path.exists
+
+            def read_file(path: str) -> str:
+                with open(path, encoding="utf-8") as file:
+                    return file.read()
 
         if file_exists(update_conf_path):
-            with ftp.file(update_conf_path) as file:
-                contents = file.read().decode("utf-8").strip("\n")
-                match = re.search("(?<=REMARKABLE_RELEASE_VERSION=).*", contents)
-                if match:
-                    return match.group(), True
-                raise SystemError(f"REMARKABLE_RELEASE_VERSION not found in {update_conf_path}")
+            contents = read_file(update_conf_path).strip("\n")
+            match = re.search("(?<=REMARKABLE_RELEASE_VERSION=).*", contents)
+            if match:
+                return match.group(), True
+            raise SystemError(f"REMARKABLE_RELEASE_VERSION not found in {update_conf_path}")
 
         if file_exists(os_release_path):
-            with ftp.file(os_release_path) as file:
-                contents = file.read().decode("utf-8")
-                match = re.search("(?<=IMG_VERSION=).*", contents)
-                if match:
-                    return match.group().strip('"'), False
-                raise SystemError(f"IMG_VERSION not found in {os_release_path}")
+            contents = read_file(os_release_path)
+            match = re.search("(?<=IMG_VERSION=).*", contents)
+            if match:
+                return match.group().strip('"'), False
+            raise SystemError(f"IMG_VERSION not found in {os_release_path}")
 
         raise SystemError(f"Cannot read version from {base_path or 'current partition'}: no version file found")
 
-    def _get_backup_partition_version(self) -> str:
-        """Gets the version installed on the backup (inactive) partition
+    def _get_active_device(self) -> str:
+        """Gets the active root device path.
 
         Returns:
-            str: Version string
+            str: Active device path (e.g., /dev/mmcblk2p2)
 
         Raises:
-            SystemError: If backup partition version cannot be determined
+            SystemError: If command fails or returns no output
         """
-        if not self.client:
-            raise SystemError("Cannot get backup partition version: no SSH client connection")
-
-        ftp = self.client.open_sftp()
-
         if self.hardware in (HardwareType.RMPP, HardwareType.RMPPM):
-            _stdin, stdout, _stderr = self.client.exec_command("swupdate -g")
-            active_device = stdout.read().decode("utf-8").strip()
-            active_part = int(active_device.split('p')[-1])
-            inactive_part = 3 if active_part == 2 else 2
-            device_base = re.sub(r'p\d+$', '', active_device)
+            cmd = "swupdate -g"
         else:
-            _stdin, stdout, _stderr = self.client.exec_command("rootdev")
-            active_device = stdout.read().decode("utf-8").strip()
-            active_part = int(active_device.split('p')[-1])
-            inactive_part = 3 if active_part == 2 else 2
-            device_base = re.sub(r'p\d+$', '', active_device)
+            cmd = "rootdev"
 
-        mount_point = f"/tmp/mount_p{inactive_part}"
+        if self.client:
+            _stdin, stdout, stderr = self.client.exec_command(cmd)
+            output = stdout.read().decode("utf-8").strip()
+            exit_status = stdout.channel.recv_exit_status()
+            if exit_status != 0 or not output:
+                error = stderr.read().decode("utf-8", errors="ignore")
+                raise SystemError(f"Failed to get active device using '{cmd}': {error or 'no output'}")
+            return output
+        else:
+            result = subprocess.run(cmd.split(), capture_output=True, text=True)
+            if result.returncode != 0 or not result.stdout.strip():
+                raise SystemError(f"Failed to get active device using '{cmd}': {result.stderr or 'no output'}")
+            return result.stdout.strip()
 
-        self.client.exec_command(f"mkdir -p {mount_point}")
-        _stdin, stdout, _stderr = self.client.exec_command(
-            f"mount -o ro {device_base}p{inactive_part} {mount_point}"
-        )
-        exit_status = stdout.channel.recv_exit_status()
+    def _parse_partition_info(self, active_device: str) -> tuple[int, int, str]:
+        """Parse partition numbers from device path.
+
+        Args:
+            active_device: Device path (e.g., /dev/mmcblk2p2)
+
+        Returns:
+            tuple: (active_part, inactive_part, device_base)
+        """
+        active_part = int(active_device.split('p')[-1])
+        inactive_part = 3 if active_part == 2 else 2
+        device_base = re.sub(r'p\d+$', '', active_device)
+        return active_part, inactive_part, device_base
 
-        if exit_status != 0:
-            error_msg = _stderr.read().decode('utf-8')
-            raise SystemError(f"Failed to mount backup partition: {error_msg}")
+    def _get_backup_partition_version(self) -> str:
+        """Gets the version installed on the backup (inactive) partition
+
+        Returns:
+            str: Version string (empty string for RM1/RM2 on failure)
 
+        Raises:
+            SystemError: If backup partition version cannot be determined (Paper Pro only)
+        """
         try:
-            version, _ = self._read_version_from_path(ftp, mount_point)
-            return version
-        finally:
-            self.client.exec_command(f"umount {mount_point}")
-            self.client.exec_command(f"rm -rf {mount_point}")
+            active_device = self._get_active_device()
+            _, inactive_part, device_base = self._parse_partition_info(active_device)
+            mount_point = f"/tmp/mount_p{inactive_part}"
+
+            if self.client:
+                ftp = self.client.open_sftp()
+                self.client.exec_command(f"mkdir -p {mount_point}")
+                _stdin, stdout, _stderr = self.client.exec_command(
+                    f"mount -o ro {device_base}p{inactive_part} {mount_point}"
+                )
+                exit_status = stdout.channel.recv_exit_status()
+
+                if exit_status != 0:
+                    error_msg = _stderr.read().decode('utf-8')
+                    raise SystemError(f"Failed to mount backup partition: {error_msg}")
+
+                try:
+                    version, _ = self._read_version_from_path(ftp, mount_point)
+                    return version
+                finally:
+                    self.client.exec_command(f"umount {mount_point}")
+                    self.client.exec_command(f"rm -rf {mount_point}")
+            else:
+                os.makedirs(mount_point, exist_ok=True)
+                result = subprocess.run(
+                    ["mount", "-o", "ro", f"{device_base}p{inactive_part}", mount_point],
+                    capture_output=True, text=True
+                )
+                if result.returncode != 0:
+                    raise SystemError(f"Failed to mount backup partition: {result.stderr}")
+
+                try:
+                    version, _ = self._read_version_from_path(base_path=mount_point)
+                    return version
+                finally:
+                    subprocess.run(["umount", mount_point])
+                    subprocess.run(["rm", "-rf", mount_point])
+        except SystemError:
+            if self.hardware in (HardwareType.RMPP, HardwareType.RMPPM):
+                raise
+            return ""
 
     def _get_paper_pro_partition_info(self, current_version: str) -> tuple[int, int, int]:
         """Gets partition information for Paper Pro devices
@@ -384,13 +442,8 @@ def _get_paper_pro_partition_info(self, current_version: str) -> tuple[int, int,
         Returns:
             tuple: (current_partition, inactive_partition, next_boot_partition)
         """
-        if not self.client:
-            raise SystemError("SSH client required for partition detection")
-
-        _stdin, stdout, _stderr = self.client.exec_command("swupdate -g")
-        active_device = stdout.read().decode("utf-8").strip()
-        current_part = int(active_device.split('p')[-1])
-        inactive_part = 3 if current_part == 2 else 2
+        active_device = self._get_active_device()
+        current_part, inactive_part, _ = self._parse_partition_info(active_device)
 
         parts = current_version.split('.')
         if len(parts) >= 2 and parts[0].isdigit() and parts[1].isdigit():
@@ -400,20 +453,42 @@ def _get_paper_pro_partition_info(self, current_version: str) -> tuple[int, int,
 
         next_boot_part = current_part
 
+        if self.client:
+            ftp = self.client.open_sftp()
+
+            def file_exists(path: str) -> bool:
+                try:
+                    ftp.stat(path)
+                    return True
+                except FileNotFoundError:
+                    return False
+
+            def read_file(path: str) -> str:
+                with ftp.file(path) as file:
+                    return file.read().decode("utf-8")
+        else:
+            file_exists = os.path.exists
+
+            def read_file(path: str) -> str:
+                with open(path, encoding="utf-8") as file:
+                    return file.read()
+
         if is_new_version:
+            boot_part_path = "/sys/bus/mmc/devices/mmc0:0001/boot_part"
             try:
-                ftp = self.client.open_sftp()
-                with ftp.file("/sys/bus/mmc/devices/mmc0:0001/boot_part") as file:
-                    boot_part_value = file.read().decode("utf-8").strip()
+                if file_exists(boot_part_path):
+                    boot_part_value = read_file(boot_part_path).strip()
                     next_boot_part = 2 if boot_part_value == "1" else 3
+                else:
+                    is_new_version = False
             except (IOError, OSError):
                 is_new_version = False
 
         if not is_new_version:
+            root_part_path = "/sys/devices/platform/lpgpr/root_part"
             try:
-                ftp = self.client.open_sftp()
-                with ftp.file("/sys/devices/platform/lpgpr/root_part") as file:
-                    root_part_value = file.read().decode("utf-8").strip()
+                if file_exists(root_part_path):
+                    root_part_value = read_file(root_part_path).strip()
                     next_boot_part = 2 if root_part_value == "a" else 3
             except (IOError, OSError) as e:
                 self.logger.debug(f"Failed to read next boot partition: {e}")
@@ -442,29 +517,16 @@ def get_device_status(self) -> tuple[str | None, str, str, str, str]:
                 beta_contents = file.read().decode("utf-8")
 
         else:
-            if os.path.exists("/usr/share/remarkable/update.conf"):
-                with open("/usr/share/remarkable/update.conf", encoding="utf-8") as file:
-                    xochitl_version = re.search(
-                        "(?<=REMARKABLE_RELEASE_VERSION=).*",
-                        file.read().strip("\n"),
-                    ).group()
-            else:
-                with open("/etc/os-release", encoding="utf-8") as file:
-                    xochitl_version = (
-                        re.search("(?<=IMG_VERSION=).*", file.read())
-                        .group()
-                        .strip('"')
-                    )
+            xochitl_version, old_update_engine = self._read_version_from_path()
 
-                    old_update_engine = False
             if os.path.exists("/etc/version"):
-                with open("/etc/version") as file:
+                with open("/etc/version", encoding="utf-8") as file:
                     version_id = file.read().rstrip()
             else:
                 version_id = ""
 
             if os.path.exists("/home/root/.config/remarkable/xochitl.conf"):
-                with open("/home/root/.config/remarkable/xochitl.conf") as file:
+                with open("/home/root/.config/remarkable/xochitl.conf", encoding="utf-8") as file:
                     beta_contents = file.read().rstrip()
             else:
                 beta_contents = ""
@@ -691,7 +753,7 @@ def install_sw_update(self, version_file: str, bootloader_files: dict[str, bytes
 
             print("\nDone! Running swupdate (PLEASE BE PATIENT, ~5 MINUTES)")
 
-            command = f"/usr/sbin/swupdate-from-image-file {out_location}"
+            command = f"bash -c 'source /usr/lib/swupdate/conf.d/09-swupdate-args && swupdate $SWUPDATE_ARGS -i {shlex.quote(out_location)}'"
             self.logger.debug(command)
             _stdin, stdout, _stderr = self.client.exec_command(command)
 
@@ -737,7 +799,7 @@ def install_sw_update(self, version_file: str, bootloader_files: dict[str, bytes
 
         else:
             print("Running swupdate")
-            command = ["/usr/sbin/swupdate-from-image-file", version_file]
+            command = ["bash", "-c", f"source /usr/lib/swupdate/conf.d/09-swupdate-args && swupdate $SWUPDATE_ARGS -i {shlex.quote(version_file)}"]
             self.logger.debug(command)
 
             try: