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| allmanj | hey - i've been asked to modify the ubuntu installer to create a second user (without sudo privileges) and prompt for a password | 12:18 |
|---|---|---|
| allmanj | i'm thinking i can somehow get this into the main menu, hopefully by dropping a script of some type in somewhere and not by creating a udeb (but if this is the preferred method i guess i can do this) | 12:19 |
| allmanj | unfortunately i can't really find how to do this. any hints appreciated... | 12:19 |
| cjwatson | allmanj: do you need UI for it? | 12:28 |
| cjwatson | oh, you said prompt | 12:29 |
| cjwatson | allmanj: prompting without a udeb is difficult because there's no other easy way to get templates in; the only way you can prompt without a udeb is if you can somehow arrange to reuse an existing template | 12:29 |
| cjwatson | allmanj: is the username fixed? | 12:30 |
| allmanj | the username is fixed, yes | 12:31 |
| allmanj | can i not use something like debconf-loadtemplate? | 12:31 |
| cjwatson | no, doesn't work properly | 12:33 |
| cjwatson | trust me on this, it's complex :-) | 12:33 |
| allmanj | :( dang! | 12:33 |
| cjwatson | you're not sunk, though | 12:33 |
| allmanj | oh? | 12:34 |
| cjwatson | if the username is fixed, then the existing user-setup text should work reasonably well? | 12:34 |
| cjwatson | unless you need extra text? | 12:34 |
| cjwatson | _Description: Choose a password for the new user: | 12:34 |
| cjwatson | A good password will contain a mixture of letters, numbers and punctuation | 12:34 |
| allmanj | no - i just need to make sure it's clear that the first time it prompts for a password it's for the first user, and the second time, for the second user | 12:34 |
| cjwatson | and should be changed at regular intervals. | 12:34 |
| cjwatson | hmm, ok, you might need extra text then | 12:34 |
| cjwatson | I think you will have to create a ueb | 12:35 |
| cjwatson | udeb | 12:35 |
| cjwatson | you can't get stuff onto the main menu without a udeb anyway, so ... | 12:35 |
| allmanj | :( i assume i can store it on the cd and load it during startup. So, not modify the initrd? | 12:36 |
| cjwatson | yeah, any udeb that's Priority: standard or higher is automatically loaded at anna time; you definitely shouldn't modify the initrd for this | 12:36 |
| cjwatson | it just needs to be in the proper Packages files | 12:36 |
| allmanj | yep - i've already modified the packages on the cd and regenerated the Packages file so i'm happy with that | 12:37 |
| cjwatson | are you comfortable with creating a udeb, or do you need help? | 12:37 |
| allmanj | i'll have a go at creating a simple udeb. I may need a little help though as i suspect i'll get stuck... | 12:37 |
| cjwatson | whereabouts do you want it to go in the menu? immediately after user-setup? | 12:38 |
| allmanj | cjwatson - that would seem sensible i think? | 12:38 |
| allmanj | this seems to have some basic info on creating a udeb: http://people.debian.org/%7Efjp/talks/debconf6/paper/ | 12:39 |
| cjwatson | I'd suggest cloning-and-hacking user-setup, radically simplifying it (you can chuck out loads of stuff), and making your udeb Depends: user-setup-udeb | 12:39 |
| cjwatson | yes, that's a good paper to read | 12:39 |
| allmanj | good call - i'll try that | 12:39 |
| cjwatson | you can then just use the same installer-menu-item number as user-setup and let the Depends break the tie for menu ordering | 12:39 |
| allmanj | any easy way for me to test my udeb without putting it on the cd and doing an install? | 12:39 |
| stgraber | Here I use an emulator like vmware or qemu, but maybe there is an easier way when testing only debian-installer (I'm testing a complete custom CD) | 12:42 |
| cjwatson | if you speak the debconf protocol to some basic extent, you can at least test the debconf interaction | 12:42 |
| cjwatson | DEBIAN_HAS_FRONTEND=1 ./script | 12:42 |
| cjwatson | and then you can type answers at it in the debconf protocol | 12:42 |
| cjwatson | it's also possible to set up a slightly more elaborate test environment by installing the cdebconf package and pointing /etc/cdebconf.conf at your own database, which you can then /usr/lib/cdebconf/debconf-loadtemplate into | 12:44 |
| cjwatson | I usually don't bother with that, but I have a bit more experience with what tends to break udebs so I can get away with shortcutting some things | 12:45 |
| === allmanj is a little scared | ||
| allmanj | i'll see how i get on with putting it on the cd and testing it with vmware, but if i have to keep doing it i'll try the cdebconf thingy | 12:46 |
| allmanj | i quite possibly will be back in the not-too-distant future sobbing uncontrolably | 12:47 |
| cjwatson | if you have the CD creation automated, vmware testing will probably be reasonably efficient at least for testing the early phase of your udeb that runs before base-installer | 12:47 |
| allmanj | and if there's an error with my udeb it'll freak out | 12:47 |
| cjwatson | but package installation takes a while even in vmware so if you're relying on that make sure that the user creation script (that you've borrowed from user-setup-apply) is pretty solid | 12:47 |
| cjwatson | note that you'll need to rename the debian-installer/user-setup-udeb/title template according to the name of your udeb, and the finish-install/progress/user-setup template according to the name of your finish-install script | 12:49 |
| cjwatson | one day we should probably embark upon a project of making d-i a bit more customiser-friendly ... | 12:50 |
| allmanj | i second the motion! | 12:52 |
| allmanj | i assume i only need the udeb. The user-setup source package appears to create a deb and a udeb | 01:19 |
| cjwatson | yes | 01:26 |
| cjwatson | the .deb's mostly for ubiquity | 01:27 |
| allmanj | thanks. i've just created a clone of user-passwd (renamed package name and all scripts and template variables) so perhaps i'll get lucky and it'll just work... | 01:28 |
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| allmanj | i've forgotten how i force it to load an additional udeb. anna-choose_modules or something? | 01:51 |
| cjwatson | you shouldn't need to force it if you use Priority: standard | 01:55 |
| cjwatson | but it's anna/choose_modules=blah | 01:55 |
| cjwatson | (modules=blah in feisty) | 01:56 |
| allmanj | and that'll add it to the default list - it won't replace it? | 01:56 |
| cjwatson | there's no default value for anna/choose_modules - it's only for extras | 02:04 |
| allmanj | it's looking good. booting into system now - we'll see if it set both passwords appropriately | 02:24 |
| allmanj | only seems to have created the second user in my modified user-setup:( | 02:26 |
| allmanj | it prompted twice for passwords (4 including verify) but only appears to have created one user | 02:27 |
| cjwatson | you need to not use the same templates | 02:28 |
| cjwatson | or rather you need to rename them | 02:28 |
| cjwatson | otherwise you'll clobber state saved by user-setup-ask for user-setup-apply | 02:29 |
| allmanj | i did rename them? | 04:02 |
| === allmanj has been away from desk for a good old while now | ||
| cjwatson | perhaps you clobbered user-setup's finish-install script by mistake? | 04:06 |
| cjwatson | it definitely sounds like something clashed | 04:06 |
| allmanj | hmm. that's possible. though i thought i renamed files. will double check - cheers | 04:16 |
| allmanj | no file name clashes that i can see | 04:18 |
| allmanj | actually... let me double check taht | 04:19 |
| allmanj | dpkg -c certainly reveals no clashes | 04:21 |
| cjwatson | try booting with DEBCONF_DEBUG=5 to get a full debconf trace - will be somewhat tedious to read but will almost certainly tell you (in syslog) what's going on | 04:30 |
| allmanj | i'm going to need it not to reboot so i can grab the logs. any simple way to do that? | 04:30 |
| cjwatson | either don't preseed finish-install/reboot_in_progress, or just grab /var/log/installer/syslog after reboot (it's copied across) | 04:38 |
| allmanj | ah - i didn't realise it was copied. thanks | 04:40 |
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| allmanj | looking at relevant section of syslog now. can see it reading in passwd/user-password... | 05:16 |
| cjwatson | that's what user-setup uses | 05:17 |
| allmanj | yep - going on now to see where it read in the other values... | 05:18 |
| allmanj | i can see it reading in the other values dta-passwd/user-password | 05:20 |
| allmanj | both then say ON STATE from 1 to 8 | 05:20 |
| allmanj | so i think it's populating the debconf database correctly at least... | 05:21 |
| allmanj | see it running the prebaseconfig from the modified package... | 05:22 |
| allmanj | and now i see it (at least starting) to run the prebaseconfig from user-setup | 05:24 |
| allmanj | hmm - so it ran the modified one first... | 05:25 |
| allmanj | it runs the script but doesn't create the user... | 05:26 |
| allmanj | so i see dta-passwd/make-user, returns true then it GETs dta-passwd/user-password-crypted | 05:27 |
| allmanj | but after passwd/make-user (which returns true) it goes to PROGRESS STEP 1 and then moves on to another prebaseconfig script... | 05:28 |
| cjwatson | it runs them in lexicographical order | 05:32 |
| cjwatson | bump the number or prepend a z to the name or something if you want it run afterwards (you probably do) | 05:33 |
| allmanj | well, it shouldn't make a difference which user is created first (in theory). However for some reason the user-setup one seems to skip user creation. The script gets run but it just goes to the next script after reading passwd/make-user (which is true) | 05:34 |
| allmanj | looking at the apply script... | 05:36 |
| allmanj | is_system_user | 05:36 |
| allmanj | could that be my problem? | 05:36 |
| allmanj | ah - that is indeed it. # Assume NIS, or any uid from 1000 to 29999, means there is a user. | 05:37 |
| allmanj | so if i make my one run after and skip the is_system_user check i should be ok | 05:37 |
| allmanj | i think | 05:37 |
| cjwatson | oh, right, sure, that's a piece you should remove from your script | 05:39 |
| cjwatson | you basically just want to use adduser | 05:39 |
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| allmanj | i've been as lazy as possible and barely touched user-setup. removed bits i think will interfere now and trying again... | 05:49 |
| allmanj | looks like i got it! thanks for the help! | 06:25 |
| cjwatson | np, glad it worked | 06:29 |
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