1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 #include <sys/types.h>
33 #include <ctype.h>
34 #include "libmail.h"
35
36 #define TRUE 1
37 #define FALSE 0
38
39 char **
setup_exec(char * s)40 setup_exec(char *s)
41 {
42 char *p = s, *q;
43 static char *argvec[256]; /* is this enough? */
44 int i = 0;
45 int stop;
46 int ignorespace = FALSE;
47
48 /* Parse up string into arg. vec. for subsequent exec. Assume */
49 /* whitespace delimits args. Any non-escaped double quotes will */
50 /* be used to group multiple whitespace-delimited tokens into */
51 /* a single exec arg. */
52 p = skipspace(p);
53 while (*p) {
54 q = p;
55 stop = FALSE;
56 while (*q && (stop == FALSE)) {
57 again:
58 switch (*q) {
59 case '\\':
60 /* Slide command string 1 char to left */
61 strmove(q, q+1);
62 break;
63 case '"':
64 ignorespace = ((ignorespace == TRUE) ?
65 FALSE : TRUE);
66 /* Slide command string 1 char to left */
67 strmove(q, q+1);
68 goto again;
69 default:
70 if (isspace((int)*q) &&
71 (ignorespace == FALSE)) {
72 stop = TRUE;
73 continue;
74 }
75 break;
76 }
77 q++;
78 }
79 if (*q == '\0') {
80 argvec[i++] = p;
81 break;
82 }
83 *q++ = '\0';
84 argvec[i++] = p;
85 p = skipspace(q);
86 }
87 argvec[i] = NULL;
88 if (i == 0) {
89 return (NULL);
90 }
91 return (argvec);
92 }
93