/src/p11-kit/common/argv.c
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1 | | /* |
2 | | * Copyright (C) 2012 Red Hat Inc. |
3 | | * |
4 | | * Redistribution and use in source and binary forms, with or without |
5 | | * modification, are permitted provided that the following conditions |
6 | | * are met: |
7 | | * |
8 | | * * Redistributions of source code must retain the above |
9 | | * copyright notice, this list of conditions and the |
10 | | * following disclaimer. |
11 | | * * Redistributions in binary form must reproduce the |
12 | | * above copyright notice, this list of conditions and |
13 | | * the following disclaimer in the documentation and/or |
14 | | * other materials provided with the distribution. |
15 | | * * The names of contributors to this software may not be |
16 | | * used to endorse or promote products derived from this |
17 | | * software without specific prior written permission. |
18 | | * |
19 | | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
20 | | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
21 | | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
22 | | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
23 | | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
24 | | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
25 | | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
26 | | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
27 | | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
28 | | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF |
29 | | * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
30 | | * DAMAGE. |
31 | | * |
32 | | * Author: Stef Walter <stefw@redhat.com> |
33 | | */ |
34 | | |
35 | | #include "config.h" |
36 | | |
37 | | #include "argv.h" |
38 | | #include "debug.h" |
39 | | |
40 | | #include <ctype.h> |
41 | | #include <stdlib.h> |
42 | | #include <string.h> |
43 | | |
44 | | bool |
45 | | p11_argv_parse (const char *string, |
46 | | void (*sink) (char *, void *), |
47 | | void *argument) |
48 | 0 | { |
49 | 0 | char quote = '\0'; |
50 | 0 | char *src, *dup, *at, *arg; |
51 | 0 | bool ret = true; |
52 | |
|
53 | 0 | return_val_if_fail (string != NULL, false); |
54 | 0 | return_val_if_fail (sink != NULL, false); |
55 | | |
56 | 0 | src = dup = strdup (string); |
57 | 0 | return_val_if_fail (dup != NULL, false); |
58 | | |
59 | 0 | arg = at = src; |
60 | 0 | for (src = dup; *src; src++) { |
61 | | |
62 | | /* Matching quote */ |
63 | 0 | if (quote == *src) { |
64 | 0 | quote = '\0'; |
65 | | |
66 | | /* Inside of quotes */ |
67 | 0 | } else if (quote != '\0') { |
68 | 0 | if (*src == '\\') { |
69 | 0 | src++; |
70 | 0 | if (!*src) { |
71 | 0 | ret = false; |
72 | 0 | goto done; |
73 | 0 | } |
74 | 0 | if (*src != quote) |
75 | 0 | *at++ = '\\'; |
76 | 0 | } |
77 | 0 | *at++ = *src; |
78 | | |
79 | | /* Space, not inside of quotes */ |
80 | 0 | } else if (isspace (*src)) { |
81 | 0 | *at = 0; |
82 | 0 | sink (arg, argument); |
83 | 0 | arg = at; |
84 | | |
85 | | /* Other character outside of quotes */ |
86 | 0 | } else { |
87 | 0 | switch (*src) { |
88 | 0 | case '\'': |
89 | 0 | case '"': |
90 | 0 | quote = *src; |
91 | 0 | break; |
92 | 0 | case '\\': |
93 | 0 | *at++ = *src++; |
94 | 0 | if (!*src) { |
95 | 0 | ret = false; |
96 | 0 | goto done; |
97 | 0 | } |
98 | | /* fall through */ |
99 | 0 | default: |
100 | 0 | *at++ = *src; |
101 | 0 | break; |
102 | 0 | } |
103 | 0 | } |
104 | 0 | } |
105 | | |
106 | | |
107 | 0 | if (at != arg) { |
108 | 0 | *at = 0; |
109 | 0 | sink (arg, argument); |
110 | 0 | } |
111 | |
|
112 | 0 | done: |
113 | 0 | free (dup); |
114 | 0 | return ret; |
115 | 0 | } |