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f82bbc1400
Add an oath_mode(3) function which translates from mode names to numbers. Consistently use UINT_MAX, not -1, to indicate an invalid response. Change the meaning of the window parameter to always indicate the number of codes to check *in addition* to the current code. Note that for TOTP, the window goes in both directions; a window of 1 means to check the current code plus the previous and next.
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*-
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* Copyright (c) 2014 The University of Oslo
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdint.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <security/oath.h>
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static const char *oath_mode_names[om_max] = {
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[om_hotp] = "hotp",
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[om_totp] = "totp",
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};
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/*
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* OATH
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*
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* Converts a mode name to the corresponding enum value
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*/
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enum oath_mode
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oath_mode(const char *str)
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{
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enum oath_mode om;
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for (om = 0; om < om_max; ++om) {
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if (oath_mode_names[om] != NULL &&
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strcasecmp(oath_mode_names[om], str) == 0) {
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return (om);
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}
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}
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return (om_undef);
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}
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/**
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* The =oath_mode function returns the =enum oath_mode value that
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* corresponds to the specified string.
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*
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* AUTHOR UIO
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*/
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