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zsh/Src/options.c
Stephane Chazelas f1e7481b86 45837: fix process group restoration upon exit
2024-02-18 18:56:39 +00:00

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/*
* options.c - shell options
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 1992-1997 Paul Falstad
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and to distribute modified versions of this software for any
* purpose, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* In no event shall Paul Falstad or the Zsh Development Group be liable
* to any party for direct, indirect, special, incidental, or consequential
* damages arising out of the use of this software and its documentation,
* even if Paul Falstad and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Paul Falstad and the Zsh Development Group specifically disclaim any
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose. The software
* provided hereunder is on an "as is" basis, and Paul Falstad and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
#include "zsh.mdh"
#include "options.pro"
/* current emulation (used to decide which set of option letters is used) */
/**/
mod_export int emulation;
/* current sticky emulation: sticky = NULL means none */
/**/
mod_export Emulation_options sticky;
/* the options; e.g. if opts[SHGLOB] != 0, SH_GLOB is turned on */
/**/
mod_export char opts[OPT_SIZE];
/* Option name hash table */
/**/
mod_export HashTable optiontab;
/* The canonical option name table */
#define OPT_CSH EMULATE_CSH
#define OPT_KSH EMULATE_KSH
#define OPT_SH EMULATE_SH
#define OPT_ZSH EMULATE_ZSH
#define OPT_ALL (OPT_CSH|OPT_KSH|OPT_SH|OPT_ZSH)
#define OPT_BOURNE (OPT_KSH|OPT_SH)
#define OPT_BSHELL (OPT_KSH|OPT_SH|OPT_ZSH)
#define OPT_NONBOURNE (OPT_ALL & ~OPT_BOURNE)
#define OPT_NONZSH (OPT_ALL & ~OPT_ZSH)
/* option is relevant to emulation */
#define OPT_EMULATE (EMULATE_UNUSED)
/* option should never be set by emulate() */
#define OPT_SPECIAL (EMULATE_UNUSED<<1)
/* option is an alias to an other option */
#define OPT_ALIAS (EMULATE_UNUSED<<2)
#define defset(X, my_emulation) (!!((X)->node.flags & my_emulation))
/*
* Note that option names should usually be fewer than 20 characters long
* to avoid formatting problems.
*/
static struct optname optns[] = {
{{NULL, "aliases", OPT_EMULATE|OPT_ALL}, ALIASESOPT},
{{NULL, "aliasfuncdef", OPT_EMULATE|OPT_BOURNE}, ALIASFUNCDEF},
{{NULL, "allexport", OPT_EMULATE}, ALLEXPORT},
{{NULL, "alwayslastprompt", OPT_ALL}, ALWAYSLASTPROMPT},
{{NULL, "alwaystoend", 0}, ALWAYSTOEND},
{{NULL, "appendcreate", OPT_EMULATE|OPT_BOURNE}, APPENDCREATE},
{{NULL, "appendhistory", OPT_ALL}, APPENDHISTORY},
{{NULL, "autocd", OPT_EMULATE}, AUTOCD},
{{NULL, "autocontinue", 0}, AUTOCONTINUE},
{{NULL, "autolist", OPT_ALL}, AUTOLIST},
{{NULL, "automenu", OPT_ALL}, AUTOMENU},
{{NULL, "autonamedirs", 0}, AUTONAMEDIRS},
{{NULL, "autoparamkeys", OPT_ALL}, AUTOPARAMKEYS},
{{NULL, "autoparamslash", OPT_ALL}, AUTOPARAMSLASH},
{{NULL, "autopushd", 0}, AUTOPUSHD},
{{NULL, "autoremoveslash", OPT_ALL}, AUTOREMOVESLASH},
{{NULL, "autoresume", 0}, AUTORESUME},
{{NULL, "badpattern", OPT_EMULATE|OPT_NONBOURNE},BADPATTERN},
{{NULL, "banghist", OPT_NONBOURNE}, BANGHIST},
{{NULL, "bareglobqual", OPT_EMULATE|OPT_ZSH}, BAREGLOBQUAL},
{{NULL, "bashautolist", 0}, BASHAUTOLIST},
{{NULL, "bashrematch", 0}, BASHREMATCH},
{{NULL, "beep", OPT_ALL}, BEEP},
{{NULL, "bgnice", OPT_EMULATE|OPT_NONBOURNE},BGNICE},
{{NULL, "braceccl", OPT_EMULATE}, BRACECCL},
{{NULL, "bsdecho", OPT_EMULATE|OPT_SH}, BSDECHO},
{{NULL, "caseglob", OPT_ALL}, CASEGLOB},
{{NULL, "casematch", OPT_ALL}, CASEMATCH},
{{NULL, "casepaths", 0}, CASEPATHS},
{{NULL, "cbases", 0}, CBASES},
{{NULL, "cprecedences", OPT_EMULATE|OPT_NONZSH}, CPRECEDENCES},
{{NULL, "cdablevars", OPT_EMULATE}, CDABLEVARS},
{{NULL, "cdsilent", 0}, CDSILENT},
{{NULL, "chasedots", OPT_EMULATE}, CHASEDOTS},
{{NULL, "chaselinks", OPT_EMULATE}, CHASELINKS},
{{NULL, "checkjobs", OPT_EMULATE|OPT_ZSH}, CHECKJOBS},
{{NULL, "checkrunningjobs", OPT_EMULATE|OPT_ZSH}, CHECKRUNNINGJOBS},
{{NULL, "clobber", OPT_EMULATE|OPT_ALL}, CLOBBER},
{{NULL, "clobberempty", 0}, CLOBBEREMPTY},
{{NULL, "combiningchars", 0}, COMBININGCHARS},
{{NULL, "completealiases", 0}, COMPLETEALIASES},
{{NULL, "completeinword", 0}, COMPLETEINWORD},
{{NULL, "continueonerror", 0}, CONTINUEONERROR},
{{NULL, "correct", 0}, CORRECT},
{{NULL, "correctall", 0}, CORRECTALL},
{{NULL, "cshjunkiehistory", OPT_EMULATE|OPT_CSH}, CSHJUNKIEHISTORY},
{{NULL, "cshjunkieloops", OPT_EMULATE|OPT_CSH}, CSHJUNKIELOOPS},
{{NULL, "cshjunkiequotes", OPT_EMULATE|OPT_CSH}, CSHJUNKIEQUOTES},
{{NULL, "cshnullcmd", OPT_EMULATE|OPT_CSH}, CSHNULLCMD},
{{NULL, "cshnullglob", OPT_EMULATE|OPT_CSH}, CSHNULLGLOB},
{{NULL, "debugbeforecmd", OPT_ALL}, DEBUGBEFORECMD},
{{NULL, "emacs", 0}, EMACSMODE},
{{NULL, "equals", OPT_EMULATE|OPT_ZSH}, EQUALS},
{{NULL, "errexit", OPT_EMULATE}, ERREXIT},
{{NULL, "errreturn", OPT_EMULATE}, ERRRETURN},
{{NULL, "exec", OPT_ALL}, EXECOPT},
{{NULL, "extendedglob", OPT_EMULATE}, EXTENDEDGLOB},
{{NULL, "extendedhistory", OPT_CSH}, EXTENDEDHISTORY},
{{NULL, "evallineno", OPT_EMULATE|OPT_ZSH}, EVALLINENO},
{{NULL, "flowcontrol", OPT_ALL}, FLOWCONTROL},
{{NULL, "forcefloat", 0}, FORCEFLOAT},
{{NULL, "functionargzero", OPT_EMULATE|OPT_NONBOURNE},FUNCTIONARGZERO},
{{NULL, "glob", OPT_EMULATE|OPT_ALL}, GLOBOPT},
{{NULL, "globalexport", OPT_EMULATE|OPT_ZSH}, GLOBALEXPORT},
{{NULL, "globalrcs", OPT_ALL}, GLOBALRCS},
{{NULL, "globassign", OPT_EMULATE|OPT_CSH}, GLOBASSIGN},
{{NULL, "globcomplete", 0}, GLOBCOMPLETE},
{{NULL, "globdots", OPT_EMULATE}, GLOBDOTS},
{{NULL, "globstarshort", OPT_EMULATE}, GLOBSTARSHORT},
{{NULL, "globsubst", OPT_EMULATE|OPT_NONZSH}, GLOBSUBST},
{{NULL, "hashcmds", OPT_ALL}, HASHCMDS},
{{NULL, "hashdirs", OPT_ALL}, HASHDIRS},
{{NULL, "hashexecutablesonly", 0}, HASHEXECUTABLESONLY},
{{NULL, "hashlistall", OPT_ALL}, HASHLISTALL},
{{NULL, "histallowclobber", 0}, HISTALLOWCLOBBER},
{{NULL, "histbeep", OPT_ALL}, HISTBEEP},
{{NULL, "histexpiredupsfirst",0}, HISTEXPIREDUPSFIRST},
{{NULL, "histfcntllock", 0}, HISTFCNTLLOCK},
{{NULL, "histfindnodups", 0}, HISTFINDNODUPS},
{{NULL, "histignorealldups", 0}, HISTIGNOREALLDUPS},
{{NULL, "histignoredups", 0}, HISTIGNOREDUPS},
{{NULL, "histignorespace", 0}, HISTIGNORESPACE},
{{NULL, "histlexwords", 0}, HISTLEXWORDS},
{{NULL, "histnofunctions", 0}, HISTNOFUNCTIONS},
{{NULL, "histnostore", 0}, HISTNOSTORE},
{{NULL, "histsubstpattern", OPT_EMULATE}, HISTSUBSTPATTERN},
{{NULL, "histreduceblanks", 0}, HISTREDUCEBLANKS},
{{NULL, "histsavebycopy", OPT_ALL}, HISTSAVEBYCOPY},
{{NULL, "histsavenodups", 0}, HISTSAVENODUPS},
{{NULL, "histverify", 0}, HISTVERIFY},
{{NULL, "hup", OPT_EMULATE|OPT_ZSH}, HUP},
{{NULL, "ignorebraces", OPT_EMULATE|OPT_SH}, IGNOREBRACES},
{{NULL, "ignoreclosebraces", OPT_EMULATE}, IGNORECLOSEBRACES},
{{NULL, "ignoreeof", 0}, IGNOREEOF},
{{NULL, "incappendhistory", 0}, INCAPPENDHISTORY},
{{NULL, "incappendhistorytime", 0}, INCAPPENDHISTORYTIME},
{{NULL, "interactive", OPT_SPECIAL}, INTERACTIVE},
{{NULL, "interactivecomments",OPT_BOURNE}, INTERACTIVECOMMENTS},
{{NULL, "ksharrays", OPT_EMULATE|OPT_BOURNE}, KSHARRAYS},
{{NULL, "kshautoload", OPT_EMULATE|OPT_BOURNE}, KSHAUTOLOAD},
{{NULL, "kshglob", OPT_EMULATE|OPT_KSH}, KSHGLOB},
{{NULL, "kshoptionprint", OPT_EMULATE|OPT_KSH}, KSHOPTIONPRINT},
{{NULL, "kshtypeset", 0}, KSHTYPESET},
{{NULL, "kshzerosubscript", 0}, KSHZEROSUBSCRIPT},
{{NULL, "listambiguous", OPT_ALL}, LISTAMBIGUOUS},
{{NULL, "listbeep", OPT_ALL}, LISTBEEP},
{{NULL, "listpacked", 0}, LISTPACKED},
{{NULL, "listrowsfirst", 0}, LISTROWSFIRST},
{{NULL, "listtypes", OPT_ALL}, LISTTYPES},
{{NULL, "localoptions", OPT_EMULATE|OPT_KSH}, LOCALOPTIONS},
{{NULL, "localloops", OPT_EMULATE}, LOCALLOOPS},
{{NULL, "localpatterns", OPT_EMULATE}, LOCALPATTERNS},
{{NULL, "localtraps", OPT_EMULATE|OPT_KSH}, LOCALTRAPS},
{{NULL, "login", OPT_SPECIAL}, LOGINSHELL},
{{NULL, "longlistjobs", 0}, LONGLISTJOBS},
{{NULL, "magicequalsubst", OPT_EMULATE}, MAGICEQUALSUBST},
{{NULL, "mailwarning", 0}, MAILWARNING},
{{NULL, "markdirs", 0}, MARKDIRS},
{{NULL, "menucomplete", 0}, MENUCOMPLETE},
{{NULL, "monitor", OPT_SPECIAL}, MONITOR},
{{NULL, "multibyte",
#ifdef MULTIBYTE_SUPPORT
OPT_ALL
#else
0
#endif
}, MULTIBYTE},
{{NULL, "multifuncdef", OPT_EMULATE|OPT_ZSH}, MULTIFUNCDEF},
{{NULL, "multios", OPT_EMULATE|OPT_ZSH}, MULTIOS},
{{NULL, "nomatch", OPT_EMULATE|OPT_NONBOURNE},NOMATCH},
{{NULL, "notify", OPT_ZSH}, NOTIFY},
{{NULL, "nullglob", OPT_EMULATE}, NULLGLOB},
{{NULL, "numericglobsort", OPT_EMULATE}, NUMERICGLOBSORT},
{{NULL, "octalzeroes", OPT_EMULATE|OPT_SH}, OCTALZEROES},
{{NULL, "overstrike", 0}, OVERSTRIKE},
{{NULL, "pathdirs", OPT_EMULATE}, PATHDIRS},
{{NULL, "pathscript", OPT_EMULATE|OPT_BOURNE}, PATHSCRIPT},
{{NULL, "pipefail", OPT_EMULATE}, PIPEFAIL},
{{NULL, "posixaliases", OPT_EMULATE|OPT_BOURNE}, POSIXALIASES},
{{NULL, "posixargzero", OPT_EMULATE}, POSIXARGZERO},
{{NULL, "posixbuiltins", OPT_EMULATE|OPT_BOURNE}, POSIXBUILTINS},
{{NULL, "posixcd", OPT_EMULATE|OPT_BOURNE}, POSIXCD},
{{NULL, "posixidentifiers", OPT_EMULATE|OPT_BOURNE}, POSIXIDENTIFIERS},
{{NULL, "posixjobs", OPT_EMULATE|OPT_BOURNE}, POSIXJOBS},
{{NULL, "posixstrings", OPT_EMULATE|OPT_BOURNE}, POSIXSTRINGS},
{{NULL, "posixtraps", OPT_EMULATE|OPT_BOURNE}, POSIXTRAPS},
{{NULL, "printeightbit", 0}, PRINTEIGHTBIT},
{{NULL, "printexitvalue", 0}, PRINTEXITVALUE},
{{NULL, "privileged", OPT_SPECIAL}, PRIVILEGED},
{{NULL, "promptbang", OPT_KSH}, PROMPTBANG},
{{NULL, "promptcr", OPT_ALL}, PROMPTCR},
{{NULL, "promptpercent", OPT_NONBOURNE}, PROMPTPERCENT},
{{NULL, "promptsp", OPT_ALL}, PROMPTSP},
{{NULL, "promptsubst", OPT_BOURNE}, PROMPTSUBST},
{{NULL, "pushdignoredups", OPT_EMULATE}, PUSHDIGNOREDUPS},
{{NULL, "pushdminus", OPT_EMULATE}, PUSHDMINUS},
{{NULL, "pushdsilent", 0}, PUSHDSILENT},
{{NULL, "pushdtohome", OPT_EMULATE}, PUSHDTOHOME},
{{NULL, "rcexpandparam", OPT_EMULATE}, RCEXPANDPARAM},
{{NULL, "rcquotes", OPT_EMULATE}, RCQUOTES},
{{NULL, "rcs", OPT_ALL}, RCS},
{{NULL, "recexact", 0}, RECEXACT},
{{NULL, "rematchpcre", 0}, REMATCHPCRE},
{{NULL, "restricted", OPT_SPECIAL}, RESTRICTED},
{{NULL, "rmstarsilent", OPT_BOURNE}, RMSTARSILENT},
{{NULL, "rmstarwait", 0}, RMSTARWAIT},
{{NULL, "sharehistory", OPT_KSH}, SHAREHISTORY},
{{NULL, "shfileexpansion", OPT_EMULATE|OPT_BOURNE}, SHFILEEXPANSION},
{{NULL, "shglob", OPT_EMULATE|OPT_BOURNE}, SHGLOB},
{{NULL, "shinstdin", OPT_SPECIAL}, SHINSTDIN},
{{NULL, "shnullcmd", OPT_EMULATE|OPT_BOURNE}, SHNULLCMD},
{{NULL, "shoptionletters", OPT_EMULATE|OPT_BOURNE}, SHOPTIONLETTERS},
{{NULL, "shortloops", OPT_EMULATE|OPT_NONBOURNE},SHORTLOOPS},
{{NULL, "shortrepeat", OPT_EMULATE}, SHORTREPEAT},
{{NULL, "shwordsplit", OPT_EMULATE|OPT_BOURNE}, SHWORDSPLIT},
{{NULL, "singlecommand", OPT_SPECIAL}, SINGLECOMMAND},
{{NULL, "singlelinezle", OPT_KSH}, SINGLELINEZLE},
{{NULL, "sourcetrace", 0}, SOURCETRACE},
{{NULL, "sunkeyboardhack", 0}, SUNKEYBOARDHACK},
{{NULL, "transientrprompt", 0}, TRANSIENTRPROMPT},
{{NULL, "trapsasync", 0}, TRAPSASYNC},
{{NULL, "typesetsilent", OPT_EMULATE|OPT_BOURNE}, TYPESETSILENT},
{{NULL, "typesettounset", OPT_EMULATE|OPT_BOURNE}, TYPESETTOUNSET},
{{NULL, "unset", OPT_EMULATE|OPT_BSHELL}, UNSET},
{{NULL, "verbose", 0}, VERBOSE},
{{NULL, "vi", 0}, VIMODE},
{{NULL, "warncreateglobal", OPT_EMULATE}, WARNCREATEGLOBAL},
{{NULL, "warnnestedvar", OPT_EMULATE}, WARNNESTEDVAR},
{{NULL, "xtrace", 0}, XTRACE},
{{NULL, "zle", OPT_SPECIAL}, USEZLE},
{{NULL, "braceexpand", OPT_ALIAS}, /* ksh/bash */ -IGNOREBRACES},
{{NULL, "dotglob", OPT_ALIAS}, /* bash */ GLOBDOTS},
{{NULL, "hashall", OPT_ALIAS}, /* bash */ HASHCMDS},
{{NULL, "histappend", OPT_ALIAS}, /* bash */ APPENDHISTORY},
{{NULL, "histexpand", OPT_ALIAS}, /* bash */ BANGHIST},
{{NULL, "log", OPT_ALIAS}, /* ksh */ -HISTNOFUNCTIONS},
{{NULL, "mailwarn", OPT_ALIAS}, /* bash */ MAILWARNING},
{{NULL, "onecmd", OPT_ALIAS}, /* bash */ SINGLECOMMAND},
{{NULL, "physical", OPT_ALIAS}, /* ksh/bash */ CHASELINKS},
{{NULL, "promptvars", OPT_ALIAS}, /* bash */ PROMPTSUBST},
{{NULL, "stdin", OPT_ALIAS}, /* ksh */ SHINSTDIN},
{{NULL, "trackall", OPT_ALIAS}, /* ksh */ HASHCMDS},
{{NULL, "dvorak", 0}, DVORAK},
{{NULL, NULL, 0}, 0}
};
/* Option letters */
#define optletters (isset(SHOPTIONLETTERS) ? kshletters : zshletters)
#define FIRST_OPT '0'
#define LAST_OPT 'y'
static short zshletters[LAST_OPT - FIRST_OPT + 1] = {
/* 0 */ CORRECT,
/* 1 */ PRINTEXITVALUE,
/* 2 */ -BADPATTERN,
/* 3 */ -NOMATCH,
/* 4 */ GLOBDOTS,
/* 5 */ NOTIFY,
/* 6 */ BGNICE,
/* 7 */ IGNOREEOF,
/* 8 */ MARKDIRS,
/* 9 */ AUTOLIST,
/* : */ 0,
/* ; */ 0,
/* < */ 0,
/* = */ 0,
/* > */ 0,
/* ? */ 0,
/* @ */ 0,
/* A */ 0, /* use with set for arrays */
/* B */ -BEEP,
/* C */ -CLOBBER,
/* D */ PUSHDTOHOME,
/* E */ PUSHDSILENT,
/* F */ -GLOBOPT,
/* G */ NULLGLOB,
/* H */ RMSTARSILENT,
/* I */ IGNOREBRACES,
/* J */ AUTOCD,
/* K */ -BANGHIST,
/* L */ SUNKEYBOARDHACK,
/* M */ SINGLELINEZLE,
/* N */ AUTOPUSHD,
/* O */ CORRECTALL,
/* P */ RCEXPANDPARAM,
/* Q */ PATHDIRS,
/* R */ LONGLISTJOBS,
/* S */ RECEXACT,
/* T */ CDABLEVARS,
/* U */ MAILWARNING,
/* V */ -PROMPTCR,
/* W */ AUTORESUME,
/* X */ LISTTYPES,
/* Y */ MENUCOMPLETE,
/* Z */ USEZLE,
/* [ */ 0,
/* \ */ 0,
/* ] */ 0,
/* ^ */ 0,
/* _ */ 0,
/* ` */ 0,
/* a */ ALLEXPORT,
/* b */ 0, /* in non-Bourne shells, end of options */
/* c */ 0, /* command follows */
/* d */ -GLOBALRCS,
/* e */ ERREXIT,
/* f */ -RCS,
/* g */ HISTIGNORESPACE,
/* h */ HISTIGNOREDUPS,
/* i */ INTERACTIVE,
/* j */ 0,
/* k */ INTERACTIVECOMMENTS,
/* l */ LOGINSHELL,
/* m */ MONITOR,
/* n */ -EXECOPT,
/* o */ 0, /* long option name follows */
/* p */ PRIVILEGED,
/* q */ 0,
/* r */ RESTRICTED,
/* s */ SHINSTDIN,
/* t */ SINGLECOMMAND,
/* u */ -UNSET,
/* v */ VERBOSE,
/* w */ CHASELINKS,
/* x */ XTRACE,
/* y */ SHWORDSPLIT,
};
static short kshletters[LAST_OPT - FIRST_OPT + 1] = {
/* 0 */ 0,
/* 1 */ 0,
/* 2 */ 0,
/* 3 */ 0,
/* 4 */ 0,
/* 5 */ 0,
/* 6 */ 0,
/* 7 */ 0,
/* 8 */ 0,
/* 9 */ 0,
/* : */ 0,
/* ; */ 0,
/* < */ 0,
/* = */ 0,
/* > */ 0,
/* ? */ 0,
/* @ */ 0,
/* A */ 0,
/* B */ 0,
/* C */ -CLOBBER,
/* D */ 0,
/* E */ 0,
/* F */ 0,
/* G */ 0,
/* H */ 0,
/* I */ 0,
/* J */ 0,
/* K */ 0,
/* L */ 0,
/* M */ 0,
/* N */ 0,
/* O */ 0,
/* P */ 0,
/* Q */ 0,
/* R */ 0,
/* S */ 0,
/* T */ TRAPSASYNC,
/* U */ 0,
/* V */ 0,
/* W */ 0,
/* X */ MARKDIRS,
/* Y */ 0,
/* Z */ 0,
/* [ */ 0,
/* \ */ 0,
/* ] */ 0,
/* ^ */ 0,
/* _ */ 0,
/* ` */ 0,
/* a */ ALLEXPORT,
/* b */ NOTIFY,
/* c */ 0,
/* d */ 0,
/* e */ ERREXIT,
/* f */ -GLOBOPT,
/* g */ 0,
/* h */ 0,
/* i */ INTERACTIVE,
/* j */ 0,
/* k */ 0,
/* l */ LOGINSHELL,
/* m */ MONITOR,
/* n */ -EXECOPT,
/* o */ 0,
/* p */ PRIVILEGED,
/* q */ 0,
/* r */ RESTRICTED,
/* s */ SHINSTDIN,
/* t */ SINGLECOMMAND,
/* u */ -UNSET,
/* v */ VERBOSE,
/* w */ 0,
/* x */ XTRACE,
/* y */ 0,
};
/* Initialisation of the option name hash table */
/**/
static void
printoptionnode(HashNode hn, int set)
{
Optname on = (Optname) hn;
int optno = on->optno;
if (optno < 0)
optno = -optno;
if (isset(KSHOPTIONPRINT)) {
if (defset(on, emulation))
printf("no%-19s %s\n", on->node.nam, isset(optno) ? "off" : "on");
else
printf("%-21s %s\n", on->node.nam, isset(optno) ? "on" : "off");
} else if (set == (isset(optno) ^ defset(on, emulation))) {
if (set ^ isset(optno))
fputs("no", stdout);
puts(on->node.nam);
}
}
/**/
void
createoptiontable(void)
{
Optname on;
optiontab = newhashtable(101, "optiontab", NULL);
optiontab->hash = hasher;
optiontab->emptytable = NULL;
optiontab->filltable = NULL;
optiontab->cmpnodes = strcmp;
optiontab->addnode = addhashnode;
optiontab->getnode = gethashnode;
optiontab->getnode2 = gethashnode2;
optiontab->removenode = NULL;
optiontab->disablenode = disablehashnode;
optiontab->enablenode = enablehashnode;
optiontab->freenode = NULL;
optiontab->printnode = printoptionnode;
for (on = optns; on->node.nam; on++)
optiontab->addnode(optiontab, on->node.nam, on);
}
/* Emulation appropriate to the setemulate function */
static int setemulate_emulation;
/* Option array manipulated within the setemulate function */
/**/
static char *setemulate_opts;
/* Setting of default options */
/**/
static void
setemulate(HashNode hn, int fully)
{
Optname on = (Optname) hn;
/* Set options: each non-special option is set according to the *
* current emulation mode if either it is considered relevant *
* to emulation or we are doing a full emulation (as indicated *
* by the `fully' parameter). */
if (!(on->node.flags & OPT_ALIAS) &&
((fully && !(on->node.flags & OPT_SPECIAL)) ||
(on->node.flags & OPT_EMULATE)))
setemulate_opts[on->optno] = defset(on, setemulate_emulation);
}
/**/
void
installemulation(int new_emulation, char *new_opts)
{
setemulate_emulation = new_emulation;
setemulate_opts = new_opts;
scanhashtable(optiontab, 0, 0, 0, setemulate,
!!(new_emulation & EMULATE_FULLY));
}
/**/
void
emulate(const char *zsh_name, int fully, int *new_emulation, char *new_opts)
{
char ch = *zsh_name;
if (ch == 'r')
ch = zsh_name[1];
/* Work out the new emulation mode */
if (ch == 'c')
*new_emulation = EMULATE_CSH;
else if (ch == 'k')
*new_emulation = EMULATE_KSH;
else if (ch == 's' || ch == 'b')
*new_emulation = EMULATE_SH;
else
*new_emulation = EMULATE_ZSH;
if (fully)
*new_emulation |= EMULATE_FULLY;
installemulation(*new_emulation, new_opts);
if (funcstack && funcstack->tp == FS_FUNC) {
/*
* We are inside a function. Decide if it's traced.
* Pedantic note: the function in the function table isn't
* guaranteed to be what we're executing, but it's
* close enough.
*/
Shfunc shf = (Shfunc)shfunctab->getnode(shfunctab, funcstack->name);
if (shf && (shf->node.flags & (PM_TAGGED|PM_TAGGED_LOCAL))) {
/* Tracing is on, so set xtrace */
new_opts[XTRACE] = 1;
}
}
}
/* setopt, unsetopt */
/**/
static void
setoption(HashNode hn, int value)
{
dosetopt(((Optname) hn)->optno, value, 0, opts);
}
/**/
int
bin_setopt(char *nam, char **args, UNUSED(Options ops), int isun)
{
int action, optno, match = 0;
int retval = 0;
/* With no arguments or options, display options. */
if (!*args) {
scanhashtable(optiontab, 1, 0, OPT_ALIAS, optiontab->printnode, !isun);
return 0;
}
/* loop through command line options (begins with "-" or "+") */
while (*args && (**args == '-' || **args == '+')) {
action = (**args == '-') ^ isun;
if(!args[0][1])
*args = "--";
while (*++*args) {
if(**args == Meta)
*++*args ^= 32;
/* The pseudo-option `--' signifies the end of options. */
if (**args == '-') {
args++;
goto doneoptions;
} else if (**args == 'o') {
if (!*++*args)
args++;
if (!*args) {
zwarnnam(nam, "string expected after -o");
inittyptab();
return 1;
}
if(!(optno = optlookup(*args))) {
zwarnnam(nam, "no such option: %s", *args);
retval |= 1;
} else if (dosetopt(optno, action, 0, opts)) {
zwarnnam(nam, "can't change option: %s", *args);
retval |= 1;
}
break;
} else if(**args == 'm') {
match = 1;
} else {
if (!(optno = optlookupc(**args))) {
zwarnnam(nam, "bad option: -%c", **args);
retval |= 1;
} else if (dosetopt(optno, action, 0, opts)) {
zwarnnam(nam, "can't change option: -%c", **args);
retval |= 1;
}
}
}
args++;
}
doneoptions:
if (!match) {
/* Not globbing the arguments -- arguments are simply option names. */
while (*args) {
if(!(optno = optlookup(*args++))) {
zwarnnam(nam, "no such option: %s", args[-1]);
retval |= 1;
} else if (dosetopt(optno, !isun, 0, opts)) {
zwarnnam(nam, "can't change option: %s", args[-1]);
retval |= 1;
}
}
} else {
/* Globbing option (-m) set. */
while (*args) {
Patprog pprog;
char *s, *t;
t = s = dupstring(*args);
while (*t)
if (*t == '_')
chuck(t);
else {
/* See comment in optlookup() */
if (*t >= 'A' && *t <= 'Z')
*t = (*t - 'A') + 'a';
t++;
}
/* Expand the current arg. */
tokenize(s);
if (!(pprog = patcompile(s, PAT_HEAPDUP, NULL))) {
zwarnnam(nam, "bad pattern: %s", *args);
retval |= 1;
break;
}
/* Loop over expansions. */
scanmatchtable(optiontab, pprog, 0, 0, OPT_ALIAS,
setoption, !isun);
args++;
}
}
inittyptab();
return retval;
}
/* Identify an option name */
/**/
mod_export int
optlookup(char const *name)
{
char *s, *t;
Optname n;
s = t = dupstring(name);
/* exorcise underscores, and change to lowercase */
while (*t)
if (*t == '_')
chuck(t);
else {
/*
* Some locales (in particular tr_TR.UTF-8) may
* have non-standard mappings of ASCII characters,
* so be careful. Option names must be ASCII so
* we don't need to be too clever.
*/
if (*t >= 'A' && *t <= 'Z')
*t = (*t - 'A') + 'a';
t++;
}
/* look up name in the table */
if (s[0] == 'n' && s[1] == 'o' &&
(n = (Optname) optiontab->getnode(optiontab, s + 2))) {
return -n->optno;
} else if ((n = (Optname) optiontab->getnode(optiontab, s)))
return n->optno;
else
return OPT_INVALID;
}
/* Identify an option letter */
/**/
int
optlookupc(char c)
{
if(c < FIRST_OPT || c > LAST_OPT)
return 0;
return optletters[c - FIRST_OPT];
}
/**/
static void
restrictparam(char *nam)
{
Param pm = (Param) paramtab->getnode(paramtab, nam);
if (pm) {
pm->node.flags |= PM_SPECIAL | PM_RESTRICTED;
return;
}
createparam(nam, PM_SCALAR | PM_UNSET | PM_SPECIAL | PM_RESTRICTED);
}
/* list of restricted parameters which are not otherwise special */
static char *rparams[] = {
"SHELL", "HISTFILE", "LD_LIBRARY_PATH", "LD_AOUT_LIBRARY_PATH",
"LD_PRELOAD", "LD_AOUT_PRELOAD", NULL
};
/* Set or unset an option, as a result of user request. The option *
* number may be negative, indicating that the sense is reversed *
* from the usual meaning of the option. */
/**/
mod_export int
dosetopt(int optno, int value, int force, char *new_opts)
{
if(!optno)
return -1;
if(optno < 0) {
optno = -optno;
value = !value;
}
if (optno == RESTRICTED) {
if (isset(RESTRICTED))
return value ? 0 : -1;
if (value) {
char **s;
for (s = rparams; *s; s++)
restrictparam(*s);
}
} else if(!force && optno == EXECOPT && !value && interact) {
/* cannot set noexec when interactive */
return -1;
} else if(!force && (optno == INTERACTIVE || optno == SHINSTDIN ||
optno == SINGLECOMMAND)) {
if (new_opts[optno] == value)
return 0;
/* it is not permitted to change the value of these options */
return -1;
} else if(!force && optno == USEZLE && value) {
/* we require a terminal in order to use ZLE */
if(!interact || SHTTY == -1 || !shout)
return -1;
} else if(optno == PRIVILEGED && !value) {
/* unsetting PRIVILEGED causes the shell to make itself unprivileged */
/* For simplicity's sake, require both setresgid() and setresuid() up-front. */
#if !defined(HAVE_SETRESGID)
zwarnnam("unsetopt",
"PRIVILEGED: can't drop privileges; setresgid() and friends not available");
return -1;
#elif !defined(HAVE_SETRESUID)
zwarnnam("unsetopt",
"PRIVILEGED: can't drop privileges; setresuid() and friends not available");
return -1;
#else
/* If set, return -1 so lastval will be non-zero. */
int failed = 0;
const int orig_euid = geteuid();
const int orig_egid = getegid();
/*
* Set the GID first as if we set the UID to non-privileged it
* might be impossible to restore the GID.
*/
if (setresgid(getgid(), getgid(), getgid())) {
zwarnnam("unsetopt",
"PRIVILEGED: can't drop privileges; failed to change group ID: %e",
errno);
return -1;
}
# ifdef USE_INITGROUPS
/* Set the supplementary groups list.
*
* Note that on macOS, FreeBSD, and possibly some other platforms,
* initgroups() resets the EGID to its second argument (see setgroups(2) for
* details). This has the potential to leave the EGID in an unexpected
* state. However, it seems common in other projects that do this dance to
* simply re-use the same GID that's going to become the EGID anyway, in
* which case it doesn't matter. That's what we do here. It's therefore
* possible, in some probably uncommon cases, that the shell ends up not
* having the privileges of the RUID user's primary/passwd group. */
if (geteuid() == 0) {
struct passwd *pw = getpwuid(getuid());
if (pw == NULL) {
zwarnnam("unsetopt",
"can't drop privileges; failed to get user information for uid %L: %e",
(long)getuid(), errno);
failed = 1;
/* This may behave strangely in the unlikely event that the same user
* name appears with multiple UIDs in the passwd database */
} else if (initgroups(pw->pw_name, getgid())) {
zwarnnam("unsetopt",
"can't drop privileges; failed to set supplementary group list: %e",
errno);
return -1;
}
} else if (getuid() != 0 &&
(geteuid() != getuid() || orig_egid != getegid())) {
zwarnnam("unsetopt",
"PRIVILEGED: supplementary group list not changed due to lack of permissions: EUID=%L",
(long)geteuid());
failed = 1;
}
# else
/* initgroups() isn't in POSIX. If it's not available on the system,
* we silently skip it. */
# endif
/* Set the UID second. */
if (setresuid(getuid(), getuid(), getuid())) {
zwarnnam("unsetopt",
"PRIVILEGED: can't drop privileges; failed to change user ID: %e",
errno);
return -1;
}
if (getuid() != 0 && orig_egid != getegid() &&
(setgid(orig_egid) != -1 || setegid(orig_egid) != -1)) {
zwarnnam("unsetopt",
"PRIVILEGED: can't drop privileges; was able to restore the egid");
return -1;
}
if (getuid() != 0 && orig_euid != geteuid() &&
(setuid(orig_euid) != -1 || seteuid(orig_euid) != -1)) {
zwarnnam("unsetopt",
"PRIVILEGED: can't drop privileges; was able to restore the euid");
return -1;
}
if (failed) {
/* A warning message has been printed. */
return -1;
}
#endif /* HAVE_SETRESGID && HAVE_SETRESUID */
#ifdef JOB_CONTROL
} else if (!force && optno == MONITOR && value) {
if (new_opts[optno] == value)
return 0;
if (SHTTY == -1)
return -1;
if (!origpgrp) {
origpgrp = GETPGRP();
acquire_pgrp();
}
#else
} else if(optno == MONITOR && value) {
return -1;
#endif /* not JOB_CONTROL */
#ifdef GETPWNAM_FAKED
} else if(optno == CDABLEVARS && value) {
return -1;
#endif /* GETPWNAM_FAKED */
} else if ((optno == EMACSMODE || optno == VIMODE) && value) {
if (sticky && sticky->emulation)
return -1;
zleentry(ZLE_CMD_SET_KEYMAP, optno);
new_opts[(optno == EMACSMODE) ? VIMODE : EMACSMODE] = 0;
} else if (optno == SUNKEYBOARDHACK) {
/* for backward compatibility */
keyboardhackchar = (value ? '`' : '\0');
}
new_opts[optno] = value;
if (
#ifdef MULTIBYTE_SUPPORT
optno == MULTIBYTE ||
#endif
optno == BANGHIST || optno == SHINSTDIN)
inittyptab();
return 0;
}
/* Function to get value for special parameter `-' */
/**/
char *
dashgetfn(UNUSED(Param pm))
{
static char buf[LAST_OPT - FIRST_OPT + 2];
char *val = buf;
int i;
for(i = 0; i <= LAST_OPT - FIRST_OPT; i++) {
int optno = optletters[i];
if(optno && ((optno > 0) ? isset(optno) : unset(-optno)))
*val++ = FIRST_OPT + i;
}
*val = '\0';
return buf;
}
/* print options for set -o/+o */
/**/
void
printoptionstates(int hadplus)
{
scanhashtable(optiontab, 1, 0, OPT_ALIAS, printoptionnodestate, hadplus);
}
/**/
static void
printoptionnodestate(HashNode hn, int hadplus)
{
Optname on = (Optname) hn;
int optno = on->optno;
if (hadplus) {
printf("set %co %s%s\n",
defset(on, emulation) != isset(optno) ? '-' : '+',
defset(on, emulation) ? "no" : "",
on->node.nam);
} else {
if (defset(on, emulation))
printf("no%-19s %s\n", on->node.nam, isset(optno) ? "off" : "on");
else
printf("%-21s %s\n", on->node.nam, isset(optno) ? "on" : "off");
}
}
/* Print option list for --help */
/**/
void
printoptionlist(void)
{
short *lp;
char c;
printf("\nNamed options:\n");
scanhashtable(optiontab, 1, 0, OPT_ALIAS, printoptionlist_printoption, 0);
printf("\nOption aliases:\n");
scanhashtable(optiontab, 1, OPT_ALIAS, 0, printoptionlist_printoption, 0);
printf("\nOption letters:\n");
for(lp = optletters, c = FIRST_OPT; c <= LAST_OPT; lp++, c++) {
if(!*lp)
continue;
printf(" -%c ", c);
printoptionlist_printequiv(*lp);
}
}
/**/
static void
printoptionlist_printoption(HashNode hn, UNUSED(int ignored))
{
Optname on = (Optname) hn;
if(on->node.flags & OPT_ALIAS) {
printf(" --%-19s ", on->node.nam);
printoptionlist_printequiv(on->optno);
} else
printf(" --%s\n", on->node.nam);
}
/**/
static void
printoptionlist_printequiv(int optno)
{
int isneg = optno < 0;
optno *= (isneg ? -1 : 1);
printf(" equivalent to --%s%s\n", isneg ? "no-" : "", optns[optno-1].node.nam);
}
/**/
static char *print_emulate_opts;
/**/
static void
print_emulate_option(HashNode hn, int fully)
{
Optname on = (Optname) hn;
if (!(on->node.flags & OPT_ALIAS) &&
((fully && !(on->node.flags & OPT_SPECIAL)) ||
(on->node.flags & OPT_EMULATE)))
{
if (!print_emulate_opts[on->optno])
fputs("no", stdout);
puts(on->node.nam);
}
}
/*
* List the settings of options associated with an emulation
*/
/**/
void list_emulate_options(char *cmdopts, int fully)
{
print_emulate_opts = cmdopts;
scanhashtable(optiontab, 1, 0, 0, print_emulate_option, fully);
}
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