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 #include <sys/types.h>
31 #include <ctype.h>
32 #include "libmail.h"
33
34 #define TRUE 1
35 #define FALSE 0
36
37 char **
setup_exec(char * s)38 setup_exec(char *s)
39 {
40 char *p = s, *q;
41 static char *argvec[256]; /* is this enough? */
42 int i = 0;
43 int stop;
44 int ignorespace = FALSE;
45
46 /* Parse up string into arg. vec. for subsequent exec. Assume */
47 /* whitespace delimits args. Any non-escaped double quotes will */
48 /* be used to group multiple whitespace-delimited tokens into */
49 /* a single exec arg. */
50 p = skipspace(p);
51 while (*p) {
52 q = p;
53 stop = FALSE;
54 while (*q && (stop == FALSE)) {
55 again:
56 switch (*q) {
57 case '\\':
58 /* Slide command string 1 char to left */
59 strmove(q, q+1);
60 break;
61 case '"':
62 ignorespace = ((ignorespace == TRUE) ?
63 FALSE : TRUE);
64 /* Slide command string 1 char to left */
65 strmove(q, q+1);
66 goto again;
67 default:
68 if (isspace((int)*q) &&
69 (ignorespace == FALSE)) {
70 stop = TRUE;
71 continue;
72 }
73 break;
74 }
75 q++;
76 }
77 if (*q == '\0') {
78 argvec[i++] = p;
79 break;
80 }
81 *q++ = '\0';
82 argvec[i++] = p;
83 p = skipspace(q);
84 }
85 argvec[i] = NULL;
86 if (i == 0) {
87 return (NULL);
88 }
89 return (argvec);
90 }
91