DOKK / manpages / debian 12 / libsasl2-dev / sasl_checkapop.3.en
SASL_CHECKAPOP(3) Cyrus SASL SASL_CHECKAPOP(3)

sasl_checkapop - Cyrus SASL documentation

#include <sasl/sasl.h>
int sasl_checkapop(sasl_conn_t *conn,


                 const char *challenge,


                 unsigned challen,


                 const char *response,


                 unsigned resplen)

sasl_checkapop will check an APOP challenge/response. APOP is an optional POP3 (RFC 1939) authentication command which uses a shared secret (password). The password is stored in the SASL secrets database. For information on the SASL shared secrets database see the System Administrators Guide.

If called with a NULL challenge, sasl_checkapop() will check to see if the APOP mechanism is enabled.


sasl_checkapop returns an integer which corresponds to one of the following codes. SASL_OK indicates that the authentication is complete. All other return codes indicate errors and should either be handled or the authentication session should be quit. See sasl_errors(3) for meanings of return codes.

RFC 4422, RFC 1939

sasl(3), sasl_errors(3)

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2022-11-22 2.1.28