pe_flag.c revision 295484 
1/*-
2 * Copyright (c) 2016 Kai Wang
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <errno.h>
28
29#include "_libpe.h"
30
31ELFTC_VCSID("$Id: pe_flag.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
32
33int
34pe_flag(PE *pe, PE_Cmd c, unsigned int flags)
35{
36
37	if (pe == NULL || (c != PE_C_SET && c != PE_C_CLR)) {
38		errno = EINVAL;
39		return (-1);
40	}
41
42	if ((flags & ~(PE_F_STRIP_DOS_STUB | PE_F_STRIP_RICH_HEADER |
43	    PE_F_STRIP_SYMTAB | PE_F_STRIP_DEBUG)) != 0) {
44		errno = EINVAL;
45		return (-1);
46	}
47
48	if (c == PE_C_SET)
49		pe->pe_flags |= flags;
50	else
51		pe->pe_flags &= ~flags;
52
53	return (0);
54}
55
56int
57pe_flag_dos_header(PE *pe, PE_Cmd c, unsigned int flags)
58{
59
60	if (pe == NULL || (c != PE_C_SET && c != PE_C_CLR) ||
61	    (flags & ~PE_F_DIRTY) != 0) {
62		errno = EINVAL;
63		return (-1);
64	}
65
66	if (c == PE_C_SET)
67		pe->pe_flags |= LIBPE_F_DIRTY_DOS_HEADER;
68	else
69		pe->pe_flags &= ~LIBPE_F_DIRTY_DOS_HEADER;
70
71	return (0);
72}
73
74int
75pe_flag_coff_header(PE *pe, PE_Cmd c, unsigned int flags)
76{
77
78	if (pe == NULL || (c != PE_C_SET && c != PE_C_CLR) ||
79	    (flags & ~PE_F_DIRTY) != 0) {
80		errno = EINVAL;
81		return (-1);
82	}
83
84	if (c == PE_C_SET)
85		pe->pe_flags |= LIBPE_F_DIRTY_COFF_HEADER;
86	else
87		pe->pe_flags &= ~LIBPE_F_DIRTY_COFF_HEADER;
88
89	return (0);
90}
91
92int
93pe_flag_opt_header(PE *pe, PE_Cmd c, unsigned int flags)
94{
95
96	if (pe == NULL || (c != PE_C_SET && c != PE_C_CLR) ||
97	    (flags & ~PE_F_DIRTY) != 0) {
98		errno = EINVAL;
99		return (-1);
100	}
101
102	if (c == PE_C_SET)
103		pe->pe_flags |= LIBPE_F_DIRTY_OPT_HEADER;
104	else
105		pe->pe_flags &= ~LIBPE_F_DIRTY_OPT_HEADER;
106
107	return (0);
108}
109
110int
111pe_flag_data_dir(PE *pe, PE_Cmd c, unsigned int flags)
112{
113
114	if (pe == NULL || (c != PE_C_SET && c != PE_C_CLR) ||
115	    (flags & ~PE_F_DIRTY) != 0) {
116		errno = EINVAL;
117		return (-1);
118	}
119
120	if (c == PE_C_SET)
121		pe->pe_flags |= LIBPE_F_DIRTY_OPT_HEADER;
122	else
123		pe->pe_flags &= ~LIBPE_F_DIRTY_OPT_HEADER;
124
125	return (0);
126}
127
128int
129pe_flag_scn(PE_Scn *ps, PE_Cmd c, unsigned int flags)
130{
131
132	if (ps == NULL || (c != PE_C_SET && c != PE_C_CLR) ||
133	    (flags & ~(PE_F_DIRTY | PE_F_STRIP_SECTION)) == 0) {
134		errno = EINVAL;
135		return (-1);
136	}
137
138	if (c == PE_C_SET)
139		ps->ps_flags |= flags;
140	else
141		ps->ps_flags &= ~flags;
142
143	return (0);
144}
145
146int
147pe_flag_section_header(PE_Scn *ps, PE_Cmd c, unsigned int flags)
148{
149	PE *pe;
150
151	if (ps == NULL || (c != PE_C_SET && c != PE_C_CLR) ||
152	    (flags & ~PE_F_DIRTY) != 0) {
153		errno = EINVAL;
154		return (-1);
155	}
156
157	pe = ps->ps_pe;
158
159	/* The library doesn't support per section header dirty flag. */
160	if (c == PE_C_SET)
161		pe->pe_flags |= LIBPE_F_DIRTY_SEC_HEADER;
162	else
163		pe->pe_flags &= ~LIBPE_F_DIRTY_SEC_HEADER;
164
165	return (0);
166}
167
168int
169pe_flag_buffer(PE_Buffer *pb, PE_Cmd c, unsigned int flags)
170{
171	PE_SecBuf *sb;
172
173	if (pb == NULL || (c != PE_C_SET && c != PE_C_CLR) ||
174	    (flags & ~PE_F_DIRTY) != 0) {
175		errno = EINVAL;
176		return (-1);
177	}
178
179	sb = (PE_SecBuf *) pb;
180
181	if (c == PE_C_SET)
182		sb->sb_flags |= flags;
183	else
184		sb->sb_flags &= ~flags;
185
186	return (0);
187}
188