Public bug reported:
libopie.a exports the functions md5_init, md5_append and md5_finish.
These are quite common names that should be avoided by a central
library. The problem arises when any binary that also uses these symbol
names is linked to libopie.a, especially when this happens indirectly.
Concretely, I ran into a problem when trying to use dovecot with libpam-
opie. pam_opie.so contains (part of) libopie.a, and thus also the
global functions md5_init, etc. Dovecot contains md5_init, md5_update
and md5_finish as global functions. Note that libopie and dovecot
differ in md5_append vs md5_update, yet share the other function names.
As a result, pam_opie.so will use part dovecot functions (per standard
plt resolution), and part its own (since md5_append is not defined my
dovecot). That results in an invalid md5 calculation and thus in failed
authentication.
Possible solution:
libopie.a should not export such common names, and instead prefix them
appropriately. Alternatively use hidden visibility if applicable.
Description: Ubuntu 9.10
Release: 9.10
libopie-dev:
Installed: 2.40~dfsg-0ubuntu1
Candidate: 2.40~dfsg-0ubuntu1
Version table:
*** 2.40~dfsg-0ubuntu1 0
500 http://ch.archive.ubuntu.com karmic/main Packages
100 /var/lib/dpkg/status
libpam-opie:
Installed: 0.21-8build2
Candidate: 0.21-8build2
Version table:
*** 0.21-8build2 0
500 http://ch.archive.ubuntu.com karmic/main Packages
100 /var/lib/dpkg/status
** Affects: opie (Ubuntu)
Importance: Undecided
Status: New
--
libopie exports conflicting symbols
https://bugs.launchpad.net/bugs/518653
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