auth: remove #define default_cache_key cache_key

[LEN] to [static LEN] on some function parameters Also add STATIC_ARRAY macro to hide it in c++ compilation.

auth: Moved all passdb/userdb template handling to auth_passdb/userdb. This is because passdb_find() and userdb_find() attempts to avoid duplicating passdbs and userdbs when they have identical driver+args. This deduplication is useful when using multiple protocol { .. } blocks that duplicate some passdb/userdb backends. For example we might want to have only a single SQL connection regardless of how the protocol-specific passdbs and userdbs are being set up. All the default/override_fields and result_* settings aren't relevant to the passdb/userdb backends, so removing them will again allow the deduplication to work correctly.

auth: Moved cache_key from passdb_module to auth_passdb. This is in preparation for the next changeset, which moves default/override_fields also to auth_passdb.

auth: Code cleanup: Renamed auth-stream to auth-fields.

Marked functions parameters that are allowed to be NULL. Some APIs were also changed. The non-obvious APIs where NULL parameter was changed to "" are master_service_init() and auth_master_user_list_init(). These checks can currently be enabled only on a patched clang: http://llvm.org/bugs/show_bug.cgi?id=6786

auth: Support passing regular %variables to sql/ldap iterate queries.

auth: Added default_fields and override_fields settings to all passdbs and userdbs.

auth worker: Verify that both client and server see the same passdb/userdb IDs. --HG-- branch : HEAD

auth: Initial support for per-protocol auth settings. Currently the list of services is hard-coded. This should be changed so that config lookup returns the service names. --HG-- branch : HEAD

auth: Store args in passdb/userdb_module, so init() doesn't need it as parameter. --HG-- branch : HEAD

auth: Completely removed struct auth_*db from *db.c --HG-- branch : HEAD

auth: passdb/userdb backends no longer know about struct auth_passdb/auth_userdb. --HG-- branch : HEAD

auth: Cleaned up struct auth_passdb/auth_userdb. --HG-- branch : HEAD

auth: Added auth failure penalty tracking based on remote IP address. --HG-- branch : HEAD

Implemented support for listing all users in userdb. --HG-- branch : HEAD

Initial commit for config rewrite. --HG-- branch : HEAD

Changed .h ifdef/defines to use <NAME>_H format. --HG-- branch : HEAD

Added pass/userdb_register_module() functions and used them to register the build-in functions instead of having a predefined array. --HG-- branch : HEAD

Changed userdb callback API. Don't require uid/gid to be returned by userdb. --HG-- branch : HEAD

Authentication cache caches now also userdb data. Code by Tommi Saviranta. --HG-- branch : HEAD

We treated internal userdb lookup errors as "user unknown" errors. In such situations this caused deliver to think the user didn't exist and the mail get bounced. --HG-- branch : HEAD

Added "bool" type and changed all ints that were used as booleans to bool. --HG-- branch : HEAD

Separated userdb_module's interface and the actual data struct. Now it's possible to have multiple userdbs of same type but with different settings. --HG-- branch : HEAD

s/occured/occurred/ --HG-- branch : HEAD

Replaced userdb/passdb settings with blocks so it's possible to give multiple ones. Plaintext password mechanisms now support handling multiple passdbs, but others don't yet. Also fixed a few memory leaks. --HG-- branch : HEAD

Restructuring of auth code. Balancer auth processes were a bad idea. Usually the balancer itself took as much CPU as the actual workers because it acted as a proxy. Now auth worker means different thing: they're used to execute blocking passdb and userdb queries. Currently just MySQL (PAM and checkpassword in TODO). --HG-- branch : HEAD

userdb can now return extra parameters to master. Removed special handling of home/mail wherever possible, they're just regular extra parameters now. LDAP passdb and static userdb can return extra parameters now. --HG-- branch : HEAD

Cleanups. --HG-- branch : HEAD

Moved extern userdb/passdb declarations to .c files. --HG-- branch : HEAD

Reorganized the code to have less global/static variables. --HG-- branch : HEAD

Split auth_request* functions from mech.c to auth-request.c --HG-- branch : HEAD

Added "passdb" userdb. It works only if passdb gives all the information needed for userdb. For example with SQL you can use ".. uid AS userdb_uid, gid AS userdb_gid, home AS userdb_home .." in password_query. --HG-- branch : HEAD

If UID or GID isn't numeric, look it up from passwd/group. --HG-- branch : HEAD

Added name variable for userdb_module and passdb_module and changed their initialization a bit. --HG-- branch : HEAD

Created generic asynchronous SQL API and implemented MySQL and PostgreSQL drivers. MySQL is implemented synchronously because it's API doesn't provide async way to do it. Replaced pgsql and mysql userdb/passdb with generic sql userdb/passdb. --HG-- branch : HEAD

Changed dovecot-auth protocol to ASCII based. Should be easier now to write replacement server if needed by someone. Also cleaned up/made more consistent auth code. The new code could still use some cleaning though.. --HG-- branch : HEAD

Added preinit() call to userdb/passdbs, which is called before dropping privileges. init() is called after. SQL/LDAP now parses the config file in preinit, but does the actual connecting only in init(). This fixes LDAP crashing at startup. --HG-- branch : HEAD

Fixed var_expand() to take a table of variables rather than a few predefined ones. Added support for modifiers. --HG-- branch : HEAD

MySQL authentication patch by Matther Reimer --HG-- branch : HEAD

Chrooting changes. Now all userdbs will support "<chroot>/./<homedir>" style home directories. --HG-- branch : HEAD

Added PostgreSQL support, patch by Alex Howansky --HG-- branch : HEAD

Added default_pass_scheme to LDAP. Support for more password schemes. Merged password checking code with LDAP and passwd-file, so both support the same schemes now. --HG-- branch : HEAD

auth process fixes, LDAP seems to be working (with the kludge define or fixed libldap) --HG-- branch : HEAD

Cleanups, LDAP support compiles again and generally looks ok, even if it doesn't necessarily work :) Works now with new master config. --HG-- branch : HEAD

Async userdb and passdb interface. --HG-- branch : HEAD

We have now separate "userdb" and "passdb". They aren't tied to each others in any way, so it's possible to use whatever user database with whatever password database. Added "static" userdb, which uses same uid/gid for everyone and generates home directory from given template. This could be useful with PAM, although insecure since everyone uses same uid. Not too well tested, and userdb/passdb API still needs to be changed to asynchronous for sql/ldap/etc lookups. --HG-- branch : HEAD