1sasl_callbacks(12 February 2006)              sasl_callbacks(12 February 2006)
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NAME

6       sasl_callbacks - How to work with SASL callbacks
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SYNOPSIS

10       #include <sasl/sasl.h>
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DESCRIPTION

14       sasl_callbacks  are  used  when  the application needs some information
15       from the application. Common reasons are getting for getting  usernames
16       and passwords. A client MUST specify what callbacks they support in the
17       sasl_client/server_init()  or  sasl_client/server_new()  calls.  If  an
18       authentication mechanism needs a callback that the application does not
19       state it supports it cannot be used.
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21       If a callback has an id parameter that should be checked to  make  sure
22       you are giving the appropriate value.
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24       If  an application is using the client side of the library functions to
25       handle the callbacks are not necessary.  Instead  the  application  may
26       deal  with  callbacks via SASL_INTERACT's. See sasl_client_start/step()
27       for more information.
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29       The list of callbacks follows:
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Common Callbacks

33       sasl_getopt_t
34               Get an option value
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36       sasl_log_t
37               Log message handler
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39       sasl_getpath_t
40               Get path to search for plugins (e.g. SASL mechanisms)
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42       sasl_verifyfile_t
43               Verify files for use by SASL
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45       sasl_canon_user_t
46               Username canonicalization function.
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Client-only Callbacks

50       sasl_getsimple_t
51               Get user/language list
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53       sasl_getsecret_t
54               Get authentication secret
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56       sasl_chalprompt_t
57               Display challenge and prompt for response
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59       sasl_getrealm_t
60               Get the realm for authentication
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Server-only Callbacks

64       sasl_authorize_t
65               Authorize policy callback
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67       sasl_server_userdb_checkpass_t
68               verify plaintext password
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70       sasl_server_userdb_setpass_t
71               set plaintext password
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73       sasl_getconfpath_t
74               Get path to search for SASL  configuration  file  (server  side
75               only). New in SASL 2.1.22.
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RETURN VALUE

79       SASL callback functions should return SASL return codes. See sasl.h for
80       a complete list. SASL_OK typically indicates success.
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CONFORMING TO

84       RFC 2222
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SEE ALSO

88       sasl(3), sasl_errors(3), sasl_authorize_t(3), sasl_log_t(3),  sasl_get‐
89       path_t(3),         sasl_getconfpath_t(3),         sasl_verifyfile_t(3),
90       sasl_canon_user_t(3),      sasl_getsimple(3),      sasl_getsecret_t(3),
91       sasl_chalprompt_t(3),      sasl_getrealm_t(3),     sasl_authorize_t(3),
92       sasl_server_userdb_checkpass_t(3), sasl_server_userdb_setpass_t(3)
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96SASL man pages                       SASL     sasl_callbacks(12 February 2006)
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