Taste the Rainbow:0.7.8: Difference between revisions

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| to use the same session bus and enables OLPC-specific
| to use the same session bus and enables OLPC-specific
| dbus access checks. When /etc/olpc-security exists,
| dbus access checks. When /etc/olpc-security exists,
| session-olpc.conf is loaded by [http://dev.laptop.org/git?p=sugar;a=blob;f=bin/sugar.in;hb=0168171c698d3ac75645dc150052fd34b28ec357 /usr/bin/sugar]
| session-olpc.conf is loaded by [http://dev.laptop.org/git?p=sugar;a=blob;f=bin/sugar.in;hb=HEAD /usr/bin/sugar]
|
|
|--- docs : explanations & notes
|--- docs : explanations & notes
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The key functions for launching activities are
The key functions for launching activities are
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l87 inject.py:grab_home()],
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l73 inject.py:strace()],
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l112 inject.py:configure_home()], and
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l85 inject.py:reserve_elt()],
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l142 inject.py:launch()].
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l98 inject.py:reserve_credentials()],
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l119 inject.py:grab_home()],
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l147 inject.py:configure_home()], and
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l179 inject.py:launch()].


These functions are called in the order listed from
These functions are called in the order listed from
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l201 inject.py:run()]
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l243 inject.py:run()]


which which is, in turn, called from
which which is, in turn, called from
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/service.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l58 service.py:Rainbow.CreateActivity()]
*[http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/service.py;hb=83eea6528df6a65d9fed508344019cc1e14b24bd#l38 service.py:Rainbow.CreateActivity()]


These six functions (and the relatively simple helpers they call) exhaust the functionality provided by rainbow-0.7.4.
These six functions (and the relatively simple helpers they call) exhaust the functionality provided by rainbow-0.7.4.

Revision as of 22:54, 24 January 2008

This page is a guided tour of the source code of the rainbow-0.7.8 release.

Source Code Overview

Please start in my rainbow-0.7.8 tree. 

 ./
  |--- README : Standard boilerplate about where work gets done; somewhat dated in this release.
  |--- rainbow.spec.in : spec-file template for building RPMS
  |--- Makefile.package : package-specific variables for use in ../Makefile.fedora
  |--- conf : installation-time configuration files
  |     \--- session-olpc.conf : applies some unusual dbus rules to allow many uids
  |                              to use the same session bus and enables OLPC-specific 
  |                              dbus access checks. When /etc/olpc-security exists, 
  |                              session-olpc.conf is loaded by /usr/bin/sugar 
  | 
  |--- docs : explanations & notes
  |     |--- NOTES : various problems I have encountered and thoughts on how to solve them.
  |     *--- rainbow.txt : a sketch & justification of the current design
  |
  \--- rainbow : source code
        |--- util : functions wrapping frequently used idioms or useful syscalls
        |--- inject.py : logic implementing activity launching
        \--- service.py : dbus service entry-point

Activity Launching

The key functions for launching activities are

These functions are called in the order listed from

which which is, in turn, called from

These six functions (and the relatively simple helpers they call) exhaust the functionality provided by rainbow-0.7.4.

Developing Rainbow

I develop Rainbow in four basic modes:

  • By packaging snapshots of a git clone to try out packaging changes.
 make snapshot
  • With locally-built or scratch-built packages, when I'm getting ready to tag a release.
 make release
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