276da39af9
Approved by: roberto, delphij Security: VuXML: 0d0f3050-1f69-11e5-9ba9-d050996490d0 Security: http://bugs.ntp.org/show_bug.cgi?id=2853 Security: https://www.kb.cert.org/vuls/id/668167 Security: http://support.ntp.org/bin/view/Main/SecurityNotice#June_2015_NTP_Security_Vulnerabi
117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
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/**
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* \file alias.c
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*
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* Handle options that are aliases for another option.
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*
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* @addtogroup autoopts
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* @{
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*/
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/*
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* This routine will forward an option alias to the correct option code.
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*
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* This file is part of AutoOpts, a companion to AutoGen.
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* AutoOpts is free software.
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* AutoOpts is Copyright (C) 1992-2015 by Bruce Korb - all rights reserved
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*
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* AutoOpts is available under any one of two licenses. The license
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* in use must be one of these two and the choice is under the control
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* of the user of the license.
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*
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* The GNU Lesser General Public License, version 3 or later
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* See the files "COPYING.lgplv3" and "COPYING.gplv3"
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*
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* The Modified Berkeley Software Distribution License
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* See the file "COPYING.mbsd"
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*
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* These files have the following sha256 sums:
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*
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* 8584710e9b04216a394078dc156b781d0b47e1729104d666658aecef8ee32e95 COPYING.gplv3
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* 4379e7444a0e2ce2b12dd6f5a52a27a4d02d39d247901d3285c88cf0d37f477b COPYING.lgplv3
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* 13aa749a5b0a454917a944ed8fffc530b784f5ead522b1aacaf4ec8aa55a6239 COPYING.mbsd
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*/
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LOCAL tSuccess
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too_many_occurrences(tOptions * opts, tOptDesc * od)
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{
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if ((opts->fOptSet & OPTPROC_ERRSTOP) != 0) {
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char const * eqv = (od->optEquivIndex != NO_EQUIVALENT) ? zequiv : zNil;
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fprintf(stderr, ztoo_often_fmt, opts->pzProgName);
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if (od->optMaxCt > 1)
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fprintf(stderr, zat_most, od->optMaxCt, od->pz_Name, eqv);
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else
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fprintf(stderr, zonly_one, od->pz_Name, eqv);
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(*opts->pUsageProc)(opts, EXIT_FAILURE);
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/* NOTREACHED */
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}
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return FAILURE;
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}
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/*=export_func optionAlias
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* private:
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*
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* what: relay an option to its alias
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* arg: + tOptions * + opts + program options descriptor +
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* arg: + tOptDesc * + old_od + the descriptor for this arg +
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* arg: + unsigned int + alias + the aliased-to option index +
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* ret-type: int
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*
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* doc:
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* Handle one option as if it had been specified as another. Exactly.
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* Returns "-1" if the aliased-to option has appeared too many times.
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=*/
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int
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optionAlias(tOptions * opts, tOptDesc * old_od, unsigned int alias)
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{
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tOptDesc * new_od;
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if (opts <= OPTPROC_EMIT_LIMIT)
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return 0;
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new_od = opts->pOptDesc + alias;
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if ((unsigned)opts->optCt <= alias) {
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fputs(zbad_alias_id, stderr);
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option_exits(EXIT_FAILURE);
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}
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/*
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* Copy over the option instance flags
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*/
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new_od->fOptState &= OPTST_PERSISTENT_MASK;
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new_od->fOptState |= (old_od->fOptState & ~OPTST_PERSISTENT_MASK);
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new_od->optArg.argString = old_od->optArg.argString;
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/*
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* Keep track of count only for DEFINED (command line) options.
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* IF we have too many, build up an error message and bail.
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*/
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if ( (new_od->fOptState & OPTST_DEFINED)
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&& (++new_od->optOccCt > new_od->optMaxCt) )
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return too_many_occurrences(opts, new_od);
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/*
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* Clear the state bits and counters
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*/
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old_od->fOptState &= OPTST_PERSISTENT_MASK;
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old_od->optOccCt = 0;
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/*
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* If there is a procedure to call, call it
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*/
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if (new_od->pOptProc != NULL)
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(*new_od->pOptProc)(opts, new_od);
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return 0;
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}
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/** @}
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*
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* Local Variables:
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* mode: C
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* c-file-style: "stroustrup"
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* indent-tabs-mode: nil
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* End:
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* end of autoopts/alias.c */
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