The elevation mechanism currently embedded in
`lib/child-writer/writer-proxy.js` is extracted as a separate re-usable
function in `lib/shared/permissions.js`.
This change hugely simplifies the writer proxy, while allowing us to
iterate faster on the elevation core functionality.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
Currently, both of these functions accept two arguments: the error
title, and the error description. This function signature makes is hard
to keep adding options to these error creation functions, like an error
code, so this commit refactors them to take a single argument: an
options object containing `title` and `description` properties.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
Windows will not react to dynamically set environment variables (e.g:
`process.env.MOUNTUTILS_DEBUG = '1'`), so in order to workaround this
limitation, we set `MOUNTUTILS_DEBUG` in
`lib/child-writer/writer-proxy.js` when spawning the CLI, and we also
set `DEBUG='*'` in `lib/start.js`, so it gets picked up by the child
writer module, which spawns the writer proxy by inheriting the
environment.
Currently, if the child writer receives a message from the writer
process that is not a valid robot object, then it will throw an error.
Now, we check if the message is a robot message, and if so, we try to
parse it (throwing errors if its indeed a malformed/incomplete robot
message), however we log it if not.
The main motivation behind this feature is that it will allows us to
print debugging information on the mountutils module, and have it
redirected to DevTools.
Change-Type: minor
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
This commit implements our own version of the `is-elevated` module. The
reason behind this is that `is-elevated` relies on lots of unnecessary
modules, that eventually require `spawn-sync` and `try-thread-sleep`,
which conditionally require dependencies that are not even declared in
their `package.json`, causing issues when concatenating the Etcher CLI.
See: https://github.com/resin-io/etcher/pull/1235
See: https://github.com/resin-io/etcher/pull/1228
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
This adds a new command recognition for message type "log",
to enable `console.log()`ing arbitrary data to the parent process console.
Not sure if we'd really want this in, but it's very handy for debugging,
and would keep us from writing these 3 lines every time
we want to inspect something in between those processes.
Change-Type: minor
`sudo-prompt`, the module we use to provide elevation for GNU/Linux,
relies on polkit to show the elevation dialog. Polkit implements a
"backend" to control privileges, but relies on different packages to
provide a GUI frontend.
If no GUI frontend can be found on the system, then `sudo-prompt` will
fail with a `No polkit authentication agent found.` In this case, we
shouldn't present a scary stack trace to the user, and we should also
not send this error to TrackJS.
As a solution, we intercept such error in
`lib/child-writer/writer-proxy.js`, and convert it into a human readable
user error using `errors.createUserError()`, which is passed to the
Etcher GUI using the "robot" mechanism.
Fixes: https://github.com/resin-io/etcher/issues/1179
Change-Type: patch
Changelog-Entry: Provide a user friendly error message when no polkit authentication agent is available on the system.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
* chore: get the CI tests working again
* an updated eslint-plugin-lodash was creating extra linter errors where we
were using built-in String methods instead of the lodash equivalents
* an updated codespell package now installs with a different executable-name
(no .py extension), and now supports multiple dictionaries
* while I was at it I replaced the messy double-quoting-string logic with the
command-join module
Changelog-type: patch
* chore: downgrade codespell to 1.9.2 because the latest version has issues running on Windows
(we'll hopefully be able to revert this commit when codespell works again properly!)
The current error handling logic is a mess. We have code that tries to
fetch information about errors in different places throughout the
application, and its incredibly hard to ensure certain types of error
get decent human friendly error messages.
This commit groups, improves, and tests all error related functions in
`lib/shared/errors.js`.
Here's a summary of the changes, in more detail:
- Move the `HUMAN_FRIENDLY` object to `shared/errors.js`
- Extend `HUMAN_FRIENDLY` with error descriptions
- Add `ENOMEM` to `shared/errors.js`
- Group CLI and `OSDialogService` mechanisms for getting an error title
and an error description
- Move error serialisation routines from `robot` to `shared/errors.js`
- Create and use `createError()` and `createUserError()` utility
functions
- Add user friendly descriptions to many errors
- Don't report user errors to TrackJS
Fixes: https://github.com/resin-io/etcher/issues/1098
Change-Type: minor
Changelog-Entry: Make errors more user friendly throughout the application.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
This is one step towards enforcing the linter until we barely have to
check for style issues on code reviews.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
There are a lot of new rules since the last time I revised the ESLint
rules documentation.
I've updated the main `.eslintrc.yml` to include some newer additions,
plus I added another ESLint configuration file inside `tests`, so we can
add some stricted rules to the production code while relaxing them for
the test suite (due to the fact that Mocha is not very ES6 friendly and
Angular tests require a bit of dark magic to setup).
This is a summary of the most important changes:
- Disallow "magic numbers"
These should now be extracted to constants, which forces us to think of
a good name for them, and thus make the code more self-documenting (I
had to Google up the meaning of some existing magic numbers, so I guess
this will be great for readability purposes).
- Require consistent `return` statements
Some functions relied on JavaScript relaxed casting mechanism to work,
which now have explicit return values. This flag also helped me detect
some promises that were not being returned, and therefore risked not
being caught by the exception handlers in case of errors.
- Disallow redefining function arguments
Immutability makes functions easier to reason about.
- Enforce JavaScript string templates instead of string concatenation
We were heavily mixing boths across the codebase.
There are some extra rules that I tweaked, however most of codebase
changes in this commit are related to the rules mentioned above.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
The `child-writer` module is not re-used by both the GUI and the CLI, so
it makes sense to have it in `lib/child-writer`.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
