55b903e2e0
Update vendor/tcsh to git b605cb561d Vendor changes: 1. PR/471: Daiki Ueno: Delay interpreting arginp until we've processed our startup files (which can change the NLS environment). 2. Fix type of read in prompt confirmation (eg. rmstar) (David Kaspar). 3. Fix out of bounds read (Brooks Davis) (reproduce by starting tcsh and hitting tab at the prompt). 4. Don't play pointer tricks that are undefined in modern c (Brooks Davis).
1031 lines
22 KiB
C
1031 lines
22 KiB
C
/* $Header: /p/tcsh/cvsroot/tcsh/tw.init.c,v 3.42 2011/04/17 14:49:30 christos Exp $ */
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/*
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* tw.init.c: Handle lists of things to complete
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*/
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/*-
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* Copyright (c) 1980, 1991 The Regents of the University of California.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#include "sh.h"
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RCSID("$tcsh: tw.init.c,v 3.42 2011/04/17 14:49:30 christos Exp $")
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#include "tw.h"
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#include "ed.h"
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#include "tc.h"
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#include "sh.proc.h"
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#define TW_INCR 128
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typedef struct {
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Char **list, /* List of command names */
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*buff; /* Space holding command names */
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size_t nlist, /* Number of items */
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nbuff, /* Current space in name buf */
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tlist, /* Total space in list */
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tbuff; /* Total space in name buf */
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} stringlist_t;
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static struct varent *tw_vptr = NULL; /* Current shell variable */
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static Char **tw_env = NULL; /* Current environment variable */
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static const Char *tw_word; /* Current word pointer */
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static struct KeyFuncs *tw_bind = NULL; /* List of the bindings */
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#ifndef HAVENOLIMIT
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static struct limits *tw_limit = NULL; /* List of the resource limits */
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#endif /* HAVENOLIMIT */
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static int tw_index = 0; /* signal and job index */
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static DIR *tw_dir_fd = NULL; /* Current directory descriptor */
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static int tw_cmd_got = 0; /* What we need to do */
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static stringlist_t tw_cmd = { NULL, NULL, 0, 0, 0, 0 };
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static stringlist_t tw_item = { NULL, NULL, 0, 0, 0, 0 };
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#define TW_FL_CMD 0x01
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#define TW_FL_ALIAS 0x02
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#define TW_FL_BUILTIN 0x04
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#define TW_FL_SORT 0x08
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#define TW_FL_REL 0x10
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static struct { /* Current element pointer */
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size_t cur; /* Current element number */
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Char **pathv; /* Current element in path */
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DIR *dfd; /* Current directory descriptor */
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} tw_cmd_state;
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#define SETDIR(dfd) \
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{ \
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tw_dir_fd = dfd; \
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if (tw_dir_fd != NULL) \
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rewinddir(tw_dir_fd); \
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}
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#define CLRDIR(dfd) \
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if (dfd != NULL) { \
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pintr_disabled++; \
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xclosedir(dfd); \
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dfd = NULL; \
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disabled_cleanup(&pintr_disabled); \
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}
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static Char *tw_str_add (stringlist_t *, size_t);
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static void tw_str_free (stringlist_t *);
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static int tw_dir_next (struct Strbuf *, DIR *);
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static void tw_cmd_add (const Char *name);
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static void tw_cmd_cmd (void);
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static void tw_cmd_builtin (void);
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static void tw_cmd_alias (void);
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static void tw_cmd_sort (void);
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static void tw_vptr_start (struct varent *);
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/* tw_str_add():
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* Add an item to the string list
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*/
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static Char *
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tw_str_add(stringlist_t *sl, size_t len)
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{
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Char *ptr;
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if (sl->tlist <= sl->nlist) {
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pintr_disabled++;
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sl->tlist += TW_INCR;
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sl->list = xrealloc(sl->list, sl->tlist * sizeof(Char *));
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disabled_cleanup(&pintr_disabled);
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}
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if (sl->tbuff <= sl->nbuff + len) {
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size_t i;
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ptr = sl->buff;
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pintr_disabled++;
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sl->tbuff += TW_INCR + len;
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sl->buff = xrealloc(sl->buff, sl->tbuff * sizeof(Char));
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/* Re-thread the new pointer list, if changed */
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if (ptr != NULL && ptr != sl->buff) {
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for (i = 0; i < sl->nlist; i++)
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sl->list[i] = sl->buff + (sl->list[i] - ptr);
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}
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disabled_cleanup(&pintr_disabled);
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}
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ptr = sl->list[sl->nlist++] = &sl->buff[sl->nbuff];
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sl->nbuff += len;
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return ptr;
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} /* tw_str_add */
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/* tw_str_free():
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* Free a stringlist
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*/
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static void
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tw_str_free(stringlist_t *sl)
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{
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pintr_disabled++;
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if (sl->list) {
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xfree(sl->list);
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sl->list = NULL;
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sl->tlist = sl->nlist = 0;
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}
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if (sl->buff) {
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xfree(sl->buff);
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sl->buff = NULL;
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sl->tbuff = sl->nbuff = 0;
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}
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disabled_cleanup(&pintr_disabled);
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} /* end tw_str_free */
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static int
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tw_dir_next(struct Strbuf *res, DIR *dfd)
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{
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struct dirent *dirp;
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if (dfd == NULL)
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return 0;
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if ((dirp = readdir(dfd)) != NULL) {
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Strbuf_append(res, str2short(dirp->d_name));
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return 1;
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}
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return 0;
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} /* end tw_dir_next */
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/* tw_cmd_add():
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* Add the name to the command list
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*/
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static void
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tw_cmd_add(const Char *name)
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{
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size_t len;
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len = Strlen(name) + 2;
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(void) Strcpy(tw_str_add(&tw_cmd, len), name);
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} /* end tw_cmd_add */
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/* tw_cmd_free():
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* Free the command list
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*/
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void
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tw_cmd_free(void)
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{
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CLRDIR(tw_dir_fd)
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tw_str_free(&tw_cmd);
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tw_cmd_got = 0;
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} /* end tw_cmd_free */
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/* tw_cmd_cmd():
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* Add system commands to the command list
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*/
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static void
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tw_cmd_cmd(void)
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{
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DIR *dirp;
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struct dirent *dp;
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Char *dir = NULL, *name;
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Char **pv;
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struct varent *v = adrof(STRpath);
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struct varent *recexec = adrof(STRrecognize_only_executables);
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size_t len;
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if (v == NULL || v->vec == NULL) /* if no path */
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return;
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for (pv = v->vec; *pv; pv++) {
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if (pv[0][0] != '/') {
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tw_cmd_got |= TW_FL_REL;
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continue;
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}
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if ((dirp = opendir(short2str(*pv))) == NULL)
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continue;
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cleanup_push(dirp, opendir_cleanup);
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if (recexec) {
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dir = Strspl(*pv, STRslash);
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cleanup_push(dir, xfree);
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}
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while ((dp = readdir(dirp)) != NULL) {
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#if defined(_UWIN) || defined(__CYGWIN__)
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/* Turn foo.{exe,com,bat} into foo since UWIN's readdir returns
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* the file with the .exe, .com, .bat extension
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*
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* Same for Cygwin, but only for .exe and .com extension.
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*/
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len = strlen(dp->d_name);
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if (len > 4 && (strcmp(&dp->d_name[len - 4], ".exe") == 0 ||
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#ifndef __CYGWIN__
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strcmp(&dp->d_name[len - 4], ".bat") == 0 ||
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#endif /* !__CYGWIN__ */
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strcmp(&dp->d_name[len - 4], ".com") == 0))
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dp->d_name[len - 4] = '\0';
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#endif /* _UWIN || __CYGWIN__ */
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/* the call to executable() may make this a bit slow */
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name = str2short(dp->d_name);
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if (dp->d_ino == 0 || (recexec && !executable(dir, name, 0)))
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continue;
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len = Strlen(name);
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if (name[0] == '#' || /* emacs temp files */
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name[0] == '.' || /* .files */
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name[len - 1] == '~' || /* emacs backups */
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name[len - 1] == '%') /* textedit backups */
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continue; /* Ignore! */
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tw_cmd_add(name);
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}
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cleanup_until(dirp);
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}
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} /* end tw_cmd_cmd */
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/* tw_cmd_builtin():
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* Add builtins to the command list
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*/
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static void
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tw_cmd_builtin(void)
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{
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const struct biltins *bptr;
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for (bptr = bfunc; bptr < &bfunc[nbfunc]; bptr++)
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if (bptr->bname)
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tw_cmd_add(str2short(bptr->bname));
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#ifdef WINNT_NATIVE
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for (bptr = nt_bfunc; bptr < &nt_bfunc[nt_nbfunc]; bptr++)
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if (bptr->bname)
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tw_cmd_add(str2short(bptr->bname));
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#endif /* WINNT_NATIVE*/
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} /* end tw_cmd_builtin */
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/* tw_cmd_alias():
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* Add aliases to the command list
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*/
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static void
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tw_cmd_alias(void)
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{
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struct varent *p;
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struct varent *c;
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p = &aliases;
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for (;;) {
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while (p->v_left)
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p = p->v_left;
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x:
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if (p->v_parent == 0) /* is it the header? */
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return;
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if (p->v_name)
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tw_cmd_add(p->v_name);
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if (p->v_right) {
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p = p->v_right;
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continue;
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}
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do {
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c = p;
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p = p->v_parent;
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} while (p->v_right == c);
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goto x;
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}
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} /* end tw_cmd_alias */
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/* tw_cmd_sort():
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* Sort the command list removing duplicate elements
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*/
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static void
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tw_cmd_sort(void)
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{
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size_t fwd, i;
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pintr_disabled++;
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/* sort the list. */
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qsort(tw_cmd.list, tw_cmd.nlist, sizeof(Char *), fcompare);
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/* get rid of multiple entries */
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for (i = 0, fwd = 0; i + 1 < tw_cmd.nlist; i++) {
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if (Strcmp(tw_cmd.list[i], tw_cmd.list[i + 1]) == 0) /* garbage */
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fwd++; /* increase the forward ref. count */
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else if (fwd)
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tw_cmd.list[i - fwd] = tw_cmd.list[i];
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}
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/* Fix fencepost error -- Theodore Ts'o <tytso@athena.mit.edu> */
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if (fwd)
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tw_cmd.list[i - fwd] = tw_cmd.list[i];
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tw_cmd.nlist -= fwd;
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disabled_cleanup(&pintr_disabled);
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} /* end tw_cmd_sort */
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/* tw_cmd_start():
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* Get the command list and sort it, if not done yet.
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* Reset the current pointer to the beginning of the command list
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*/
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/*ARGSUSED*/
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void
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tw_cmd_start(DIR *dfd, const Char *pat)
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{
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static Char *defpath[] = { STRNULL, 0 };
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USE(pat);
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SETDIR(dfd)
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if ((tw_cmd_got & TW_FL_CMD) == 0) {
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tw_cmd_free();
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tw_cmd_cmd();
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tw_cmd_got |= TW_FL_CMD;
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}
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if ((tw_cmd_got & TW_FL_ALIAS) == 0) {
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tw_cmd_alias();
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tw_cmd_got &= ~TW_FL_SORT;
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tw_cmd_got |= TW_FL_ALIAS;
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}
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if ((tw_cmd_got & TW_FL_BUILTIN) == 0) {
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tw_cmd_builtin();
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tw_cmd_got &= ~TW_FL_SORT;
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tw_cmd_got |= TW_FL_BUILTIN;
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}
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if ((tw_cmd_got & TW_FL_SORT) == 0) {
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tw_cmd_sort();
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tw_cmd_got |= TW_FL_SORT;
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}
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tw_cmd_state.cur = 0;
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CLRDIR(tw_cmd_state.dfd)
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if (tw_cmd_got & TW_FL_REL) {
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struct varent *vp = adrof(STRpath);
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if (vp && vp->vec)
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tw_cmd_state.pathv = vp->vec;
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else
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tw_cmd_state.pathv = defpath;
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}
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else
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tw_cmd_state.pathv = defpath;
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} /* tw_cmd_start */
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/* tw_cmd_next():
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* Return the next element in the command list or
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* Look for commands in the relative path components
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*/
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int
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tw_cmd_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
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{
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int ret = 0;
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Char *ptr;
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if (tw_cmd_state.cur < tw_cmd.nlist) {
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*flags = TW_DIR_OK;
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Strbuf_append(res, tw_cmd.list[tw_cmd_state.cur++]);
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return 1;
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}
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/*
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* We need to process relatives in the path.
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*/
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while ((tw_cmd_state.dfd == NULL ||
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(res->len = 0, ret = tw_dir_next(res, tw_cmd_state.dfd)) == 0) &&
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*tw_cmd_state.pathv != NULL) {
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CLRDIR(tw_cmd_state.dfd)
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while (*tw_cmd_state.pathv && tw_cmd_state.pathv[0][0] == '/')
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tw_cmd_state.pathv++;
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if ((ptr = *tw_cmd_state.pathv) != 0) {
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res->len = 0;
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Strbuf_append(res, ptr);
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ret = 1;
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/*
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* We complete directories only on '.' should that
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* be changed?
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*/
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dir->len = 0;
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if (ptr[0] == '\0' || (ptr[0] == '.' && ptr[1] == '\0')) {
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tw_cmd_state.dfd = opendir(".");
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*flags = TW_DIR_OK | TW_EXEC_CHK;
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}
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else {
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Strbuf_append(dir, *tw_cmd_state.pathv);
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Strbuf_append1(dir, '/');
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tw_cmd_state.dfd = opendir(short2str(*tw_cmd_state.pathv));
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*flags = TW_EXEC_CHK;
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}
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Strbuf_terminate(dir);
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tw_cmd_state.pathv++;
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}
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}
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return ret;
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} /* end tw_cmd_next */
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|
|
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/* tw_vptr_start():
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* Find the first variable in the variable list
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*/
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static void
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tw_vptr_start(struct varent *c)
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{
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tw_vptr = c; /* start at beginning of variable list */
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|
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for (;;) {
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while (tw_vptr->v_left)
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tw_vptr = tw_vptr->v_left;
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x:
|
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if (tw_vptr->v_parent == 0) { /* is it the header? */
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tw_vptr = NULL;
|
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return;
|
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}
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if (tw_vptr->v_name)
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return; /* found first one */
|
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if (tw_vptr->v_right) {
|
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tw_vptr = tw_vptr->v_right;
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continue;
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}
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|
do {
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c = tw_vptr;
|
|
tw_vptr = tw_vptr->v_parent;
|
|
} while (tw_vptr->v_right == c);
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goto x;
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}
|
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} /* end tw_shvar_start */
|
|
|
|
|
|
/* tw_shvar_next():
|
|
* Return the next shell variable
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
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tw_shvar_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
struct varent *p;
|
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struct varent *c;
|
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|
|
USE(flags);
|
|
USE(dir);
|
|
if ((p = tw_vptr) == NULL)
|
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return 0; /* just in case */
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|
|
Strbuf_append(res, p->v_name); /* we know that this name is here now */
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|
|
|
/* now find the next one */
|
|
for (;;) {
|
|
if (p->v_right) { /* if we can go right */
|
|
p = p->v_right;
|
|
while (p->v_left)
|
|
p = p->v_left;
|
|
}
|
|
else { /* else go up */
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|
do {
|
|
c = p;
|
|
p = p->v_parent;
|
|
} while (p->v_right == c);
|
|
}
|
|
if (p->v_parent == 0) { /* is it the header? */
|
|
tw_vptr = NULL;
|
|
return 1;
|
|
}
|
|
if (p->v_name) {
|
|
tw_vptr = p; /* save state for the next call */
|
|
return 1;
|
|
}
|
|
}
|
|
} /* end tw_shvar_next */
|
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|
|
|
|
/* tw_envvar_next():
|
|
* Return the next environment variable
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_envvar_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
const Char *ps;
|
|
|
|
USE(flags);
|
|
USE(dir);
|
|
if (tw_env == NULL || *tw_env == NULL)
|
|
return 0;
|
|
for (ps = *tw_env; *ps && *ps != '='; ps++)
|
|
continue;
|
|
Strbuf_appendn(res, *tw_env, ps - *tw_env);
|
|
tw_env++;
|
|
return 1;
|
|
} /* end tw_envvar_next */
|
|
|
|
|
|
/* tw_var_start():
|
|
* Begin the list of the shell and environment variables
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_var_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
tw_vptr_start(&shvhed);
|
|
tw_env = STR_environ;
|
|
} /* end tw_var_start */
|
|
|
|
|
|
/* tw_alias_start():
|
|
* Begin the list of the shell aliases
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_alias_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
tw_vptr_start(&aliases);
|
|
tw_env = NULL;
|
|
} /* tw_alias_start */
|
|
|
|
|
|
/* tw_complete_start():
|
|
* Begin the list of completions
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_complete_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
tw_vptr_start(&completions);
|
|
tw_env = NULL;
|
|
} /* end tw_complete_start */
|
|
|
|
|
|
/* tw_var_next():
|
|
* Return the next shell or environment variable
|
|
*/
|
|
int
|
|
tw_var_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (tw_vptr)
|
|
ret = tw_shvar_next(res, dir, flags);
|
|
if (ret == 0 && tw_env)
|
|
ret = tw_envvar_next(res, dir, flags);
|
|
return ret;
|
|
} /* end tw_var_next */
|
|
|
|
|
|
/* tw_logname_start():
|
|
* Initialize lognames to the beginning of the list
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_logname_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
#ifdef HAVE_GETPWENT
|
|
(void) setpwent(); /* Open passwd file */
|
|
#endif
|
|
} /* end tw_logname_start */
|
|
|
|
|
|
/* tw_logname_next():
|
|
* Return the next entry from the passwd file
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_logname_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
struct passwd *pw;
|
|
|
|
/*
|
|
* We don't want to get interrupted inside getpwent()
|
|
* because the yellow pages code is not interruptible,
|
|
* and if we call endpwent() immediatetely after
|
|
* (in pintr()) we may be freeing an invalid pointer
|
|
*/
|
|
USE(flags);
|
|
USE(dir);
|
|
pintr_disabled++;
|
|
#ifdef HAVE_GETPWENT
|
|
pw = getpwent();
|
|
#else
|
|
pw = NULL;
|
|
#endif
|
|
disabled_cleanup(&pintr_disabled);
|
|
|
|
if (pw == NULL) {
|
|
#ifdef YPBUGS
|
|
fix_yp_bugs();
|
|
#endif
|
|
return 0;
|
|
}
|
|
Strbuf_append(res, str2short(pw->pw_name));
|
|
return 1;
|
|
} /* end tw_logname_next */
|
|
|
|
|
|
/* tw_logname_end():
|
|
* Close the passwd file to finish the logname list
|
|
*/
|
|
void
|
|
tw_logname_end(void)
|
|
{
|
|
#ifdef YPBUGS
|
|
fix_yp_bugs();
|
|
#endif
|
|
#ifdef HAVE_GETPWENT
|
|
(void) endpwent();
|
|
#endif
|
|
} /* end tw_logname_end */
|
|
|
|
|
|
/* tw_grpname_start():
|
|
* Initialize grpnames to the beginning of the list
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_grpname_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
#if !defined(_VMS_POSIX) && !defined(_OSD_POSIX) && !defined(WINNT_NATIVE) && !defined (__ANDROID__)
|
|
(void) setgrent(); /* Open group file */
|
|
#endif /* !_VMS_POSIX && !_OSD_POSIX && !WINNT_NATIVE */
|
|
} /* end tw_grpname_start */
|
|
|
|
|
|
/* tw_grpname_next():
|
|
* Return the next entry from the group file
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_grpname_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
struct group *gr;
|
|
|
|
/*
|
|
* We don't want to get interrupted inside getgrent()
|
|
* because the yellow pages code is not interruptible,
|
|
* and if we call endgrent() immediatetely after
|
|
* (in pintr()) we may be freeing an invalid pointer
|
|
*/
|
|
USE(flags);
|
|
USE(dir);
|
|
pintr_disabled++;
|
|
#if !defined(_VMS_POSIX) && !defined(_OSD_POSIX) && !defined(WINNT_NATIVE) && !defined(__ANDROID__)
|
|
errno = 0;
|
|
while ((gr = getgrent()) == NULL && errno == EINTR) {
|
|
handle_pending_signals();
|
|
errno = 0;
|
|
}
|
|
#else /* _VMS_POSIX || _OSD_POSIX || WINNT_NATIVE */
|
|
gr = NULL;
|
|
#endif /* !_VMS_POSIX && !_OSD_POSIX && !WINNT_NATIVE */
|
|
disabled_cleanup(&pintr_disabled);
|
|
|
|
if (gr == NULL) {
|
|
#ifdef YPBUGS
|
|
fix_yp_bugs();
|
|
#endif
|
|
return 0;
|
|
}
|
|
Strbuf_append(res, str2short(gr->gr_name));
|
|
return 1;
|
|
} /* end tw_grpname_next */
|
|
|
|
|
|
/* tw_grpname_end():
|
|
* Close the group file to finish the groupname list
|
|
*/
|
|
void
|
|
tw_grpname_end(void)
|
|
{
|
|
#ifdef YPBUGS
|
|
fix_yp_bugs();
|
|
#endif
|
|
#if !defined(_VMS_POSIX) && !defined(_OSD_POSIX) && !defined(WINNT_NATIVE) && !defined (__ANDROID__)
|
|
(void) endgrent();
|
|
#endif /* !_VMS_POSIX && !_OSD_POSIX && !WINNT_NATIVE */
|
|
} /* end tw_grpname_end */
|
|
|
|
/* tw_file_start():
|
|
* Initialize the directory for the file list
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_file_start(DIR *dfd, const Char *pat)
|
|
{
|
|
struct varent *vp;
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
if ((vp = adrof(STRcdpath)) != NULL)
|
|
tw_env = vp->vec;
|
|
} /* end tw_file_start */
|
|
|
|
|
|
/* tw_file_next():
|
|
* Return the next file in the directory
|
|
*/
|
|
int
|
|
tw_file_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
int ret = tw_dir_next(res, tw_dir_fd);
|
|
if (ret == 0 && (*flags & TW_DIR_OK) != 0) {
|
|
CLRDIR(tw_dir_fd)
|
|
while (tw_env && *tw_env)
|
|
if ((tw_dir_fd = opendir(short2str(*tw_env))) != NULL)
|
|
break;
|
|
else
|
|
tw_env++;
|
|
|
|
if (tw_dir_fd) {
|
|
dir->len = 0;
|
|
Strbuf_append(dir, *tw_env++);
|
|
Strbuf_append1(dir, '/');
|
|
Strbuf_terminate(dir);
|
|
ret = tw_dir_next(res, tw_dir_fd);
|
|
}
|
|
}
|
|
return ret;
|
|
} /* end tw_file_next */
|
|
|
|
|
|
/* tw_dir_end():
|
|
* Clear directory related lists
|
|
*/
|
|
void
|
|
tw_dir_end(void)
|
|
{
|
|
CLRDIR(tw_dir_fd)
|
|
CLRDIR(tw_cmd_state.dfd)
|
|
} /* end tw_dir_end */
|
|
|
|
|
|
/* tw_item_free():
|
|
* Free the item list
|
|
*/
|
|
void
|
|
tw_item_free(void)
|
|
{
|
|
tw_str_free(&tw_item);
|
|
} /* end tw_item_free */
|
|
|
|
|
|
/* tw_item_get():
|
|
* Return the list of items
|
|
*/
|
|
Char **
|
|
tw_item_get(void)
|
|
{
|
|
return tw_item.list;
|
|
} /* end tw_item_get */
|
|
|
|
|
|
/* tw_item_add():
|
|
* Return a new item for a Strbuf_terminate()'d s
|
|
*/
|
|
void
|
|
tw_item_add(const struct Strbuf *s)
|
|
{
|
|
Char *p;
|
|
|
|
p = tw_str_add(&tw_item, s->len + 1);
|
|
Strcpy(p, s->s);
|
|
} /* tw_item_add */
|
|
|
|
|
|
/* tw_item_find():
|
|
* Find the string if it exists in the item list
|
|
* end return it.
|
|
*/
|
|
Char *
|
|
tw_item_find(Char *str)
|
|
{
|
|
size_t i;
|
|
|
|
if (tw_item.list == NULL || str == NULL)
|
|
return NULL;
|
|
|
|
for (i = 0; i < tw_item.nlist; i++)
|
|
if (tw_item.list[i] != NULL && Strcmp(tw_item.list[i], str) == 0)
|
|
return tw_item.list[i];
|
|
return NULL;
|
|
} /* end tw_item_find */
|
|
|
|
|
|
/* tw_vl_start():
|
|
* Initialize a variable list
|
|
*/
|
|
void
|
|
tw_vl_start(DIR *dfd, const Char *pat)
|
|
{
|
|
SETDIR(dfd)
|
|
if ((tw_vptr = adrof(pat)) != NULL) {
|
|
tw_env = tw_vptr->vec;
|
|
tw_vptr = NULL;
|
|
}
|
|
else
|
|
tw_env = NULL;
|
|
} /* end tw_vl_start */
|
|
|
|
|
|
/*
|
|
* Initialize a word list
|
|
*/
|
|
void
|
|
tw_wl_start(DIR *dfd, const Char *pat)
|
|
{
|
|
SETDIR(dfd);
|
|
tw_word = pat;
|
|
} /* end tw_wl_start */
|
|
|
|
|
|
/*
|
|
* Return the next word from the word list
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_wl_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
const Char *p;
|
|
|
|
USE(dir);
|
|
USE(flags);
|
|
if (tw_word == NULL || tw_word[0] == '\0')
|
|
return 0;
|
|
|
|
while (*tw_word && Isspace(*tw_word)) tw_word++;
|
|
|
|
for (p = tw_word; *tw_word && !Isspace(*tw_word); tw_word++)
|
|
continue;
|
|
if (tw_word == p)
|
|
return 0;
|
|
Strbuf_appendn(res, p, tw_word - p);
|
|
if (*tw_word)
|
|
tw_word++;
|
|
return 1;
|
|
} /* end tw_wl_next */
|
|
|
|
|
|
/* tw_bind_start():
|
|
* Begin the list of the shell bindings
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_bind_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
tw_bind = FuncNames;
|
|
} /* end tw_bind_start */
|
|
|
|
|
|
/* tw_bind_next():
|
|
* Begin the list of the shell bindings
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_bind_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
USE(dir);
|
|
USE(flags);
|
|
if (tw_bind && tw_bind->name) {
|
|
const char *ptr;
|
|
|
|
for (ptr = tw_bind->name; *ptr != '\0'; ptr++)
|
|
Strbuf_append1(res, *ptr);
|
|
tw_bind++;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
} /* end tw_bind_next */
|
|
|
|
|
|
/* tw_limit_start():
|
|
* Begin the list of the shell limitings
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_limit_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
#ifndef HAVENOLIMIT
|
|
tw_limit = limits;
|
|
#endif /* ! HAVENOLIMIT */
|
|
} /* end tw_limit_start */
|
|
|
|
|
|
/* tw_limit_next():
|
|
* Begin the list of the shell limitings
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_limit_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
USE(dir);
|
|
USE(flags);
|
|
#ifndef HAVENOLIMIT
|
|
if (tw_limit && tw_limit->limname) {
|
|
const char *ptr;
|
|
|
|
for (ptr = tw_limit->limname; *ptr != '\0'; ptr++)
|
|
Strbuf_append1(res, *ptr);
|
|
tw_limit++;
|
|
return 1;
|
|
}
|
|
#endif /* ! HAVENOLIMIT */
|
|
return 0;
|
|
} /* end tw_limit_next */
|
|
|
|
|
|
/* tw_sig_start():
|
|
* Begin the list of the shell sigings
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_sig_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
tw_index = 0;
|
|
} /* end tw_sig_start */
|
|
|
|
|
|
/* tw_sig_next():
|
|
* Begin the list of the shell sigings
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_sig_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
USE(dir);
|
|
USE(flags);
|
|
for (;tw_index < nsig; tw_index++) {
|
|
const char *ptr;
|
|
|
|
if (mesg[tw_index].iname == NULL)
|
|
continue;
|
|
|
|
for (ptr = mesg[tw_index].iname; *ptr != '\0'; ptr++)
|
|
Strbuf_append1(res, *ptr);
|
|
tw_index++;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
} /* end tw_sig_next */
|
|
|
|
|
|
/* tw_job_start():
|
|
* Begin the list of the shell jobings
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
tw_job_start(DIR *dfd, const Char *pat)
|
|
{
|
|
USE(pat);
|
|
SETDIR(dfd)
|
|
tw_index = 1;
|
|
} /* end tw_job_start */
|
|
|
|
|
|
/* tw_job_next():
|
|
* Begin the list of the shell jobings
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
tw_job_next(struct Strbuf *res, struct Strbuf *dir, int *flags)
|
|
{
|
|
struct process *j;
|
|
|
|
USE(dir);
|
|
USE(flags);
|
|
for (;tw_index <= pmaxindex; tw_index++) {
|
|
for (j = proclist.p_next; j != NULL; j = j->p_next)
|
|
if (j->p_index == tw_index && j->p_procid == j->p_jobid)
|
|
break;
|
|
if (j == NULL)
|
|
continue;
|
|
Strbuf_append(res, j->p_command);
|
|
tw_index++;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
} /* end tw_job_next */
|