static_fn void put_enum(Namval_t *np, const void *val, nvflag_t flags, Namfun_t *fp) {
struct Enum *ep = (struct Enum *)fp;
const char *v;
int n;
if (!val && !(flags & NV_INTEGER)) {
nv_putv(np, val, flags, fp);
nv_disc(np, &ep->namfun, DISC_OP_POP);
if (!ep->namfun.nofree) free_enum(ep);
return;
}
if (flags & NV_INTEGER) {
nv_putv(np, val, flags, fp);
return;
}
for (int i = 0; i < ep->nelem; i++) {
v = ep->values[i];
if (ep->iflag) {
n = strcasecmp(v, val);
} else {
n = strcmp(v, val);
}
if (n == 0) {
// TODO: Figure out if a static var is correct. The code used to store a pointer to the
// stack local var `i` which is obviously wrong and only works by accident if the
// pointer is used before the stack location is overwritten.
static uint16_t x;
x = i;
nv_putv(np, (char *)&x, NV_UINT16, fp);
return;
}
}
if (nv_isattr(np, NV_NOFREE)) error(ERROR_exit(1), "%s: invalid value %s", nv_name(np), val);
}
static void put_enum(Namval_t* np,const char *val,int flags,Namfun_t *fp)
{
struct Enum *ep = (struct Enum*)fp;
register const char *v;
unsigned short i=0, n;
if(!val && !(flags&NV_INTEGER))
{
nv_putv(np, val, flags,fp);
nv_disc(np,&ep->hdr,NV_POP);
if(!ep->hdr.nofree)
free((void*)ep);
return;
}
if(flags&NV_INTEGER)
{
nv_putv(np,val,flags,fp);
return;
}
while(v=ep->values[i])
{
if(ep->iflag)
n = strcasecmp(v,val);
else
n = strcmp(v,val);
if(n==0)
{
nv_putv(np, (char*)&i, NV_UINT16, fp);
return;
}
i++;
}
if(nv_isattr(np,NV_NOFREE))
error(ERROR_exit(1), "%s: invalid value %s",nv_name(np),val);
}
int b_dot_cmd(register int n,char *argv[],void* extra)
{
register char *script;
register Namval_t *np;
register int jmpval;
register Shell_t *shp = ((Shbltin_t*)extra)->shp;
struct sh_scoped savst, *prevscope = shp->st.self;
char *filename=0;
int fd;
struct dolnod *argsave=0, *saveargfor;
struct checkpt buff;
Sfio_t *iop=0;
short level;
while (n = optget(argv,sh_optdot)) switch (n)
{
case ':':
errormsg(SH_DICT,2, "%s", opt_info.arg);
break;
case '?':
errormsg(SH_DICT,ERROR_usage(0), "%s",opt_info.arg);
return(2);
}
argv += opt_info.index;
script = *argv;
if(error_info.errors || !script)
errormsg(SH_DICT,ERROR_usage(2),"%s",optusage((char*)0));
if(shp->dot_depth+1 > DOTMAX)
errormsg(SH_DICT,ERROR_exit(1),e_toodeep,script);
if(!(np=shp->posix_fun))
{
/* check for KornShell style function first */
np = nv_search(script,shp->fun_tree,0);
if(np && is_afunction(np) && !nv_isattr(np,NV_FPOSIX))
{
if(!np->nvalue.ip)
{
path_search(script,NIL(Pathcomp_t**),0);
if(np->nvalue.ip)
{
if(nv_isattr(np,NV_FPOSIX))
np = 0;
}
else
errormsg(SH_DICT,ERROR_exit(1),e_found,script);
}
}
void lib_init(int flag, void* context)
{
Shell_t *shp = ((Shbltin_t*)context)->shp;
Namval_t *mp,*bp;
if(flag)
return;
bp = sh_addbuiltin(shp,"Enum", enum_create, (void*)0);
mp = nv_search("typeset",shp->bltin_tree,0);
nv_onattr(bp,nv_isattr(mp,NV_PUBLIC));
}
static void put_classval(Namval_t* np, const char* val, int flag, Namfun_t* nfp)
{
walk_class(np,1,(struct dcclass *)nfp);
if(nfp = nv_stack(np,(Namfun_t*)0))
{
free((void*)nfp);
if(np->nvalue && !nv_isattr(np,NV_NOFREE))
free((void*)np->nvalue);
}
if(val)
nv_putval(np,val,flag);
}
static_fn char *get_enum(Namval_t *np, Namfun_t *fp) {
if (nv_isattr(np, NV_NOTSET) == NV_NOTSET) return "";
struct Enum *ep = (struct Enum *)fp;
long n = nv_getn(np, fp);
assert(n >= 0);
if (n < ep->nelem) return (char *)ep->values[n];
static char buff[6];
sfsprintf(buff, sizeof(buff), "%u%c", n, 0);
return buff;
}
static char* get_enum(register Namval_t* np, Namfun_t *fp)
{
static char buff[6];
struct Enum *ep = (struct Enum*)fp;
long n = nv_getn(np,fp);
if(nv_isattr(np,NV_NOTSET)==NV_NOTSET)
return("");
if(n < ep->nelem)
return((char*)ep->values[n]);
sfsprintf(buff,sizeof(buff),"%u%c",n,0);
return(buff);
}
static int whence(Shell_t *shp,char **argv, register int flags)
{
register const char *name;
register Namval_t *np;
register const char *cp;
register int aflag,r=0;
register const char *msg;
int tofree;
Dt_t *root;
Namval_t *nq;
char *notused;
Pathcomp_t *pp=0;
int notrack = 1;
if(flags&Q_FLAG)
flags &= ~A_FLAG;
while(name= *argv++)
{
tofree=0;
aflag = ((flags&A_FLAG)!=0);
cp = 0;
np = 0;
if(flags&P_FLAG)
goto search;
if(flags&Q_FLAG)
goto bltins;
/* reserved words first */
if(sh_lookup(name,shtab_reserved))
{
sfprintf(sfstdout,"%s%s\n",name,(flags&V_FLAG)?sh_translate(is_reserved):"");
if(!aflag)
continue;
aflag++;
}
/* non-tracked aliases */
if((np=nv_search(name,shp->alias_tree,0))
&& !nv_isnull(np) && !(notrack=nv_isattr(np,NV_TAGGED))
&& (cp=nv_getval(np)))
{
if(flags&V_FLAG)
{
if(nv_isattr(np,NV_EXPORT))
msg = sh_translate(is_xalias);
else
msg = sh_translate(is_alias);
sfprintf(sfstdout,msg,name);
}
sfputr(sfstdout,sh_fmtq(cp),'\n');
if(!aflag)
continue;
cp = 0;
aflag++;
}
/* built-ins and functions next */
bltins:
root = (flags&F_FLAG)?shp->bltin_tree:shp->fun_tree;
if(np= nv_bfsearch(name, root, &nq, ¬used))
{
if(is_abuiltin(np) && nv_isnull(np))
goto search;
cp = "";
if(flags&V_FLAG)
{
if(nv_isnull(np))
cp = sh_translate(is_ufunction);
else if(is_abuiltin(np))
{
if(nv_isattr(np,BLT_SPC))
cp = sh_translate(is_spcbuiltin);
else
cp = sh_translate(is_builtin);
}
else
cp = sh_translate(is_function);
}
if(flags&Q_FLAG)
continue;
sfprintf(sfstdout,"%s%s\n",name,cp);
if(!aflag)
continue;
cp = 0;
aflag++;
}
search:
if(sh_isstate(SH_DEFPATH))
{
cp=0;
notrack=1;
}
do
{
if(path_search(shp,name,&pp,2+(aflag>1)))
{
cp = name;
if((flags&P_FLAG) && *cp!='/')
cp = 0;
}
else
{
cp = stakptr(PATH_OFFSET);
if(*cp==0)
cp = 0;
else if(*cp!='/')
{
cp = path_fullname(shp,cp);
tofree=1;
}
}
if(flags&Q_FLAG)
{
pp = 0;
r |= !cp;
}
else if(cp)
{
if(flags&V_FLAG)
{
if(*cp!= '/')
{
if(!np && (np=nv_search(name,shp->track_tree,0)))
sfprintf(sfstdout,"%s %s %s/%s\n",name,sh_translate(is_talias),path_pwd(shp,0),cp);
else if(!np || nv_isnull(np))
sfprintf(sfstdout,"%s%s\n",name,sh_translate(is_ufunction));
continue;
}
sfputr(sfstdout,sh_fmtq(name),' ');
/* built-in version of program */
if(*cp=='/' && (np=nv_search(cp,shp->bltin_tree,0)))
msg = sh_translate(is_builtver);
/* tracked aliases next */
else if(aflag>1 || !notrack || strchr(name,'/'))
msg = sh_translate("is");
else
msg = sh_translate(is_talias);
sfputr(sfstdout,msg,' ');
}
sfputr(sfstdout,sh_fmtq(cp),'\n');
if(aflag)
{
if(aflag<=1)
aflag++;
if (pp)
pp = pp->next;
}
else
pp = 0;
if(tofree)
{
free((char*)cp);
tofree = 0;
}
}
else if(aflag<=1)
{
r |= 1;
if(flags&V_FLAG)
errormsg(SH_DICT,ERROR_exit(0),e_found,sh_fmtq(name));
}
} while(pp);
}
return(r);
}
static void genvalue(Sfio_t *out, Shclass_t *sp, int indent, Namval_t *npar)
{
Shfield_t *fp = sp->fields;
Namval_t *np, **nodes= (Namval_t**)(sp+1);
register int i,isarray;
if(out)
{
sfwrite(out,"(\n",2);
indent++;
}
for(i=0; i < sp->nelem; i++,fp++)
{
#if 0
/* handle recursive case */
#endif
if(!(np=nodes[i]) && out)
np = sh_newnode(fp,npar);
if(np)
{
isarray=0;
if(nv_isattr(np,NV_ARRAY))
{
isarray=1;
if(array_elem(nv_arrayptr(np))==0)
isarray=2;
else
nv_putsub(np,(char*)0,ARRAY_SCAN);
}
sfnputc(out,'\t',indent);
sfputr(out,fp->name,(isarray==2?'\n':'='));
if(isarray)
{
if(isarray==2)
continue;
sfwrite(out,"(\n",2);
sfnputc(out,'\t',++indent);
}
while(1)
{
char *fmtq;
if(isarray)
{
sfprintf(out,"[%s]",sh_fmtq(nv_getsub(np)));
sfputc(out,'=');
}
if(!(fmtq=nv_getval(np)) || !(fmtq=sh_fmtq(fmtq)))
fmtq = "";
sfputr(out,fmtq,'\n');
if(!nv_nextsub(np))
break;
sfnputc(out,'\t',indent);
}
if(isarray)
{
sfnputc(out,'\t',--indent);
sfwrite(out,")\n",2);
}
}
}
if(out)
{
if(indent>1)
sfnputc(out,'\t',indent-1);
sfputc(out,')');
}
}
int test_unop(Shell_t *shp,register int op,register const char *arg)
{
struct stat statb;
int f;
switch(op)
{
case 'r':
return(permission(arg, R_OK));
case 'w':
return(permission(arg, W_OK));
case 'x':
return(permission(arg, X_OK));
case 'V':
#if SHOPT_FS_3D
{
register int offset = staktell();
if(stat(arg,&statb)<0 || !S_ISREG(statb.st_mode))
return(0);
/* add trailing / */
stakputs(arg);
stakputc('/');
stakputc(0);
arg = (const char*)stakptr(offset);
stakseek(offset);
/* FALL THRU */
}
#else
return(0);
#endif /* SHOPT_FS_3D */
case 'd':
return(test_stat(arg,&statb)>=0 && S_ISDIR(statb.st_mode));
case 'c':
return(test_stat(arg,&statb)>=0 && S_ISCHR(statb.st_mode));
case 'b':
return(test_stat(arg,&statb)>=0 && S_ISBLK(statb.st_mode));
case 'f':
return(test_stat(arg,&statb)>=0 && S_ISREG(statb.st_mode));
case 'u':
return(test_mode(arg)&S_ISUID);
case 'g':
return(test_mode(arg)&S_ISGID);
case 'k':
#ifdef S_ISVTX
return(test_mode(arg)&S_ISVTX);
#else
return(0);
#endif /* S_ISVTX */
#if SHOPT_TEST_L
case 'l':
#endif
case 'L':
case 'h': /* undocumented, and hopefully will disappear */
if(*arg==0 || arg[strlen(arg)-1]=='/' || lstat(arg,&statb)<0)
return(0);
return(S_ISLNK(statb.st_mode));
case 'C':
#ifdef S_ISCTG
return(test_stat(arg,&statb)>=0 && S_ISCTG(statb.st_mode));
#else
return(0);
#endif /* S_ISCTG */
case 'H':
#ifdef S_ISCDF
{
register int offset = staktell();
if(test_stat(arg,&statb)>=0 && S_ISCDF(statb.st_mode))
return(1);
stakputs(arg);
stakputc('+');
stakputc(0);
arg = (const char*)stakptr(offset);
stakseek(offset);
return(test_stat(arg,&statb)>=0 && S_ISCDF(statb.st_mode));
}
#else
return(0);
#endif /* S_ISCDF */
case 'S':
return(isasock(arg,&statb));
case 'N':
return(test_stat(arg,&statb)>=0 && tmxgetmtime(&statb) > tmxgetatime(&statb));
case 'p':
return(isapipe(arg,&statb));
case 'n':
return(*arg != 0);
case 'z':
return(*arg == 0);
case 's':
sfsync(sfstdout);
case 'O':
case 'G':
if(*arg==0 || test_stat(arg,&statb)<0)
return(0);
if(op=='s')
return(statb.st_size>0);
else if(op=='O')
return(statb.st_uid==shp->gd->userid);
return(statb.st_gid==shp->gd->groupid);
case 'a':
case 'e':
if(memcmp(arg,"/dev/",5)==0 && sh_open(arg,O_NONBLOCK))
return(1);
return(permission(arg, F_OK));
case 'o':
f=1;
if(*arg=='?')
return(sh_lookopt(arg+1,&f)>0);
op = sh_lookopt(arg,&f);
return(op && (f==(sh_isoption(op)!=0)));
case 't':
{
char *last;
op = strtol(arg,&last, 10);
return(*last?0:tty_check(op));
}
case 'v':
case 'R':
{
Namval_t *np;
Namarr_t *ap;
int isref;
if(!(np = nv_open(arg,shp->var_tree,NV_VARNAME|NV_NOFAIL|NV_NOADD|NV_NOREF)))
return(0);
isref = nv_isref(np);
if(op=='R')
return(isref);
if(isref)
{
if(np->nvalue.cp)
np = nv_refnode(np);
else
return(0);
}
if(ap = nv_arrayptr(np))
return(nv_arrayisset(np,ap));
return(!nv_isnull(np) || nv_isattr(np,NV_INTEGER));
}
default:
{
static char a[3] = "-?";
a[1]= op;
errormsg(SH_DICT,ERROR_exit(2),e_badop,a);
/* NOTREACHED */
return(0);
}
}
}
int b_dot_cmd(int n, char *argv[], Shbltin_t *context) {
char *script;
Namval_t *np;
int jmpval;
Shell_t *shp = context->shp;
struct sh_scoped savst, *prevscope = shp->st.self;
int fd;
char *filename = NULL;
char *buffer = NULL;
struct dolnod *saveargfor = NULL;
volatile struct dolnod *argsave = NULL;
checkpt_t buff;
Sfio_t *iop = NULL;
short level;
Optdisc_t disc;
memset(&disc, 0, sizeof(disc));
disc.version = OPT_VERSION;
opt_info.disc = &disc;
while ((n = optget(argv, sh_optdot))) {
switch (n) {
case ':': {
errormsg(SH_DICT, 2, "%s", opt_info.arg);
break;
}
case '?': {
errormsg(SH_DICT, ERROR_usage(0), "%s", opt_info.arg);
return 2;
}
default: { break; }
}
}
argv += opt_info.index;
script = *argv;
if (error_info.errors || !script) {
errormsg(SH_DICT, ERROR_usage(2), "%s", optusage(NULL));
__builtin_unreachable();
}
if (shp->dot_depth + 1 > DOTMAX) {
errormsg(SH_DICT, ERROR_exit(1), e_toodeep, script);
__builtin_unreachable();
}
np = shp->posix_fun;
if (!np) {
// Check for KornShell style function first.
np = nv_search(script, shp->fun_tree, 0);
if (np && is_afunction(np) && !nv_isattr(np, NV_FPOSIX)) {
if (!FETCH_VT(np->nvalue, ip)) {
// TODO: Replace this with a comment explaining why the return value of this
// path_search() call is ignored. At the time I wrote this (2019-03-16) no unit test
// exercises this statement. I added the void cast to silence Coverity Scan 253792.
(void)path_search(shp, script, NULL, 0);
if (FETCH_VT(np->nvalue, ip)) {
if (nv_isattr(np, NV_FPOSIX)) np = NULL;
} else {
errormsg(SH_DICT, ERROR_exit(1), e_found, script);
__builtin_unreachable();
}
}
} else {
np = NULL;
}
if (!np) {
fd = path_open(shp, script, path_get(shp, script));
if (fd < 0) {
errormsg(SH_DICT, ERROR_system(1), e_open, script);
__builtin_unreachable();
}
filename = path_fullname(shp, stkptr(shp->stk, PATH_OFFSET));
}
}
*prevscope = shp->st;
shp->st.lineno = np ? ((struct functnod *)nv_funtree(np))->functline : 1;
shp->st.var_local = shp->st.save_tree = shp->var_tree;
if (filename) {
shp->st.filename = filename;
shp->st.lineno = 1;
}
level = shp->fn_depth + shp->dot_depth + 1;
nv_putval(SH_LEVELNOD, (char *)&level, NV_INT16);
shp->st.prevst = prevscope;
shp->st.self = &savst;
shp->topscope = (Shscope_t *)shp->st.self;
prevscope->save_tree = shp->var_tree;
if (np) {
struct Ufunction *rp = FETCH_VT(np->nvalue, rp);
shp->st.filename = strdup(rp->fname ? rp->fname : "");
}
nv_putval(SH_PATHNAMENOD, shp->st.filename, NV_NOFREE);
shp->posix_fun = NULL;
if (np || argv[1]) argsave = sh_argnew(shp, argv, &saveargfor);
sh_pushcontext(shp, &buff, SH_JMPDOT);
jmpval = sigsetjmp(buff.buff, 0);
if (jmpval == 0) {
shp->dot_depth++;
if (np) {
sh_exec(shp, (Shnode_t *)(nv_funtree(np)), sh_isstate(shp, SH_ERREXIT));
} else {
buffer = malloc(IOBSIZE + 1);
iop = sfnew(NULL, buffer, IOBSIZE, fd, SF_READ);
sh_offstate(shp, SH_NOFORK);
sh_eval(shp, iop, sh_isstate(shp, SH_PROFILE) ? SH_FUNEVAL : 0);
}
}
sh_popcontext(shp, &buff);
if (buffer) free(buffer);
if (!np) {
free(shp->st.filename);
shp->st.filename = NULL;
}
shp->dot_depth--;
if ((np || argv[1]) && jmpval != SH_JMPSCRIPT) {
sh_argreset(shp, (struct dolnod *)argsave, saveargfor);
} else {
prevscope->dolc = shp->st.dolc;
prevscope->dolv = shp->st.dolv;
}
if (shp->st.self != &savst) *shp->st.self = shp->st;
// Only restore the top Shscope_t portion for posix functions.
memcpy(&shp->st, prevscope, sizeof(Shscope_t));
shp->topscope = (Shscope_t *)prevscope;
nv_putval(SH_PATHNAMENOD, shp->st.filename, NV_NOFREE);
if (jmpval && jmpval != SH_JMPFUN) siglongjmp(shp->jmplist->buff, jmpval);
return shp->exitval;
}