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Goodhosts' rewrite of the hosts file renders MAMP incapable of managing its entries

Open theMikeD opened this issue 5 years ago • 30 comments

I am running MAMP Pro and VVV simultaneously, and sometimes concurrently. When MAMP Pro has first crack at the /etc/hosts file, it ends up looking like this:

127.0.0.1	scratch.test	# MAMP PRO - Do NOT remove this entry!
::1		scratch.test	# MAMP PRO - Do NOT remove this entry!
127.0.0.1	clean.test	# MAMP PRO - Do NOT remove this entry!
::1		clean.test	# MAMP PRO - Do NOT remove this entry!
127.0.0.1	cnmd.test	# MAMP PRO - Do NOT remove this entry!
::1		cnmd.test	# MAMP PRO - Do NOT remove this entry!
127.0.0.1	boilerplate.test	# MAMP PRO - Do NOT remove this entry!
::1		boilerplate.test	# MAMP PRO - Do NOT remove this entry!
127.0.0.1	macster.local	# MAMP PRO - Do NOT remove this entry!
::1		macster.local	# MAMP PRO - Do NOT remove this entry!

etc etc. Adding and removing hosts via MAMP Pro works correctly, and shutting down MAMP Pro removes all entries it controls. All fine.

When I fire up MAMP Pro and then fire up VVV, /etc/hosts gets rewritten so that I end up with this

::1 boilerplate.test clean.test cnmd.test macster.local scratch.test # MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!
127.0.0.1 boilerplate.test clean.test cnmd.test macster.local scratch.test # MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!  MAMP PRO - Do NOT remove this entry!
192.168.50.4 vvv vvv.test rfa.test # VAGRANT: 32549be2774dded0939569e71b56d8f1 (default) / 465e8518-e2b5-4ae0-9348-e56e8662ab2d
255.255.255.255 broadcasthost

IOW they have gone from one-per-line pairs to a single entry. This rewrite prevents MAMP from being able to manage its entries.

As technically correct as this may be, this is a bad scene. Is there a way to have GH just do its thing without modifying anything else?

theMikeD avatar Dec 28 '20 16:12 theMikeD

i dont think you can use the --clean functionality with a rig like mamp then, the only way to get here is through a clean flag right? i am not missing something that got you here via other use?

luthermonson avatar Dec 28 '20 18:12 luthermonson

I think this needs migrating to the vagrant repo at https://github.com/goodhosts/vagrant

tomjn avatar Dec 28 '20 18:12 tomjn

ohhh that makes sense, ill copy/paste and link it and close this

luthermonson avatar Dec 28 '20 18:12 luthermonson

To me the issue is not just the plugin that does a clean but the fact that the clean command, cleans all the file and just the parts that are involved with goodhosts.

Clean command was implemented to avoid multiple injection of the same rule by goodhosts as a previous ticket so is a problem in both the projects @luthermonson

Mte90 avatar Dec 29 '20 10:12 Mte90

you think there should be a #goodhosts comment or something and just keep everything 100% separate from everyone else?

luthermonson avatar Dec 29 '20 18:12 luthermonson

yes in this way the user can use clean without worrying.

Mte90 avatar Dec 29 '20 18:12 Mte90

@Mte90 @theMikeD let's do it, if we do some sort of #MANAGED BY GOODHOSTS comment block and only change entries in there it would make the most sense but i feel this requires a 1.1.x version bump, agree?

luthermonson avatar Dec 29 '20 18:12 luthermonson

Yes to me is good so I can do a new release of the plugin with that and add a flag to enable or not the clean at all.

Mte90 avatar Dec 29 '20 18:12 Mte90

This sounds good!

tomjn avatar Dec 29 '20 19:12 tomjn

Whats the next step?

theMikeD avatar Jan 09 '21 17:01 theMikeD

find time to add the feature :D PRs welcome~

luthermonson avatar Jan 11 '21 20:01 luthermonson

Luther I think the problem is less time and willingness and more that they don’t know how to do it, I know that’s definitely the case here.

What would such a PR look like?

On Mon, 11 Jan 2021 at 20:22, Luther Monson [email protected] wrote:

find time to add the feature :D PRs welcome~

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/goodhosts/cli/issues/24#issuecomment-758200613, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAAOLZ55NORZI7TLYW4ORJLSZNMYLANCNFSM4VMGYQEQ .

tomjn avatar Jan 11 '21 20:01 tomjn

@luthermonson any update or technical direction? You have willing contributors with the time to make the change, who don't know what to do. I'd really like to be able to write a PR but what would that PR look like?

tomjn avatar Jan 13 '21 14:01 tomjn

@tomjn this is what i want.. open to feedback

  1. all code for doing this should be in the cli, the hostsfile package should just be to parse a hosts file to types. this is logic around what to do with the hostsfile after that is done so this code should be here in this repo, can try doing a first round of this have a line type that uses hostsfile.Line and includes a bool which is we check if we manage the line or not.
  2. easiest thing is probably a string to match in comment per line like MAMP does, for example as long as it contains goodhosts in the comment we assume it was meant for our cli, just need a something simple like strings.Contains("goodhosts", comment). e.g. we'd manage all of these lines
127.0.0.1 myhost anotherhost #goodhosts
192.168.0.2 dev-server1 #my comment here goodhosts
192.168.0.3 dev-server2 #goodhosts my comment here
  1. make sure when we add an entry with the add subcommand we need to make sure the comment gets put in place as well
  2. might find it annoying if the goodhosts managed lines are all over the file, might want clean to group them together
  3. dont forget the tests!

luthermonson avatar Jan 13 '21 17:01 luthermonson

Maybe we can just revert the clean imperative until there is a way to turn it off?

theMikeD avatar Jan 15 '21 20:01 theMikeD

@theMikeD that doesn't make sense in the context of this repo, for Goodhosts CLI, it would be easier to not use --clean than it would be to remove the feature.

I think there's been some misunderstanding as to what goodhosts is on your part:

  • goodhosts cli, a golang command line program for adding and removing things from the hosts file
  • vagrant-goodhosts, a vagrant plugin that uses goodhosts to add hosts as requested by a vagrant project
  • VVV, a vagrant project that uses vagrant goodhosts in place of vagrant hostsupdater

This is the goodhosts cli repo, so reverting the --clean parameter means removing that feature. Unless you meant make vagrant-goodhosts not specify --clean? Because goodhosts only cleans when the --clean parameter is passed

tomjn avatar Jan 16 '21 01:01 tomjn

I'm becoming a pro at posting bugs to the wrong repo. Please move this issue elsewhere if you deem it appropriate.

Unless you meant make vagrant-goodhosts not specify --clean?

Yes, this. As I understand it, doing so isn't something I can control with a config file.

theMikeD avatar Jan 16 '21 03:01 theMikeD

You posted in the right repo, but that particular request was for a different piece of software. IIRC @Mte90 has already fixed and merged a PR that makes it configurable and off by default

tomjn avatar Jan 16 '21 19:01 tomjn

As for this feature, I think these semantics make sense if the CLI is used in conjunction with a --namespace="" parameter.

When adding a host:

  • if the host already exists
    • if it exists on a line without the namespace comment on the end
      • error message + bad error code
    • if it exists on a line with the namespace comment
      • remove from file and add on a new line if the IP is different with namespace comment
      • do nothing if the IP is the same
  • if it does not exist
    • add on a new line with namespace comment

When removing a host:

  • if it exists on a line without the namespace comment on the end
    • error message + bad error code
  • if it exists on a line with the namespace comment
    • remove from file

Additionally, the namespace parameter would allow rival namespaces, as well as the ability for us to do things like:

goodhosts remove cnmd.test --namespace="MAMP PRO - Do NOT remove this entry!"

tomjn avatar Jan 16 '21 20:01 tomjn

all code for doing this should be in the cli, the hostsfile package should just be to parse a hosts file to types. this is logic around what to do with the hostsfile after that is done so this code should be here in this repo, can try doing a first round of this have a line type that uses hostsfile.Line and includes a bool which is we check if we manage the line or not.

This seems sensible

easiest thing is probably a string to match in comment per line like MAMP does, for example as long as it contains goodhosts in the comment we assume it was meant for our cli, just need a something simple like strings.Contains("goodhosts", comment). e.g. we'd manage all of these lines

I think we should allow the namespace to be configurable from the CLI parameter for maximum flexibility, then search for # namespace \n or equivalent

tomjn avatar Jan 16 '21 20:01 tomjn

any updates for this @luthermonson?

Mte90 avatar Feb 22 '21 13:02 Mte90

oh thanks for the ping. this fell off my radar. adding it to my task list and ill try and get to it this week

luthermonson avatar Feb 22 '21 18:02 luthermonson

@theMikeD latest goodhosts vagrant plugin removed the clean operation a few months ago

tomjn avatar Mar 22 '21 20:03 tomjn

@luthermonson just a ping again :-D

Mte90 avatar Apr 02 '21 15:04 Mte90

oi vey

luthermonson avatar Apr 05 '21 23:04 luthermonson

and it is time for another ping @luthermonson :-D

Mte90 avatar May 11 '21 17:05 Mte90

missed this ping... sorry. im bad at getting this feature done.

luthermonson avatar Jun 03 '21 08:06 luthermonson

it's me again :-D I don't know Go otherwise I will try to implement it.

Mte90 avatar Jun 28 '21 17:06 Mte90

is this still an issue with the new release? I saw test cases with MAMP examples were added to the hostsfile repo prior to 1.1.1 release

tomjn avatar Oct 01 '23 15:10 tomjn

it's not fixed yet, i grabbed the mamp hosts file to try and test it eventually as i started keeping default hosts files to write more tests against

luthermonson avatar Oct 02 '23 03:10 luthermonson