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
31 ELFTC_VCSID("$Id: pe_flag.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
32
33 int
pe_flag(PE * pe,PE_Cmd c,unsigned int flags)34 pe_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
56 int
pe_flag_dos_header(PE * pe,PE_Cmd c,unsigned int flags)57 pe_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
74 int
pe_flag_coff_header(PE * pe,PE_Cmd c,unsigned int flags)75 pe_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
92 int
pe_flag_opt_header(PE * pe,PE_Cmd c,unsigned int flags)93 pe_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
110 int
pe_flag_data_dir(PE * pe,PE_Cmd c,unsigned int flags)111 pe_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
128 int
pe_flag_scn(PE_Scn * ps,PE_Cmd c,unsigned int flags)129 pe_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
146 int
pe_flag_section_header(PE_Scn * ps,PE_Cmd c,unsigned int flags)147 pe_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
168 int
pe_flag_buffer(PE_Buffer * pb,PE_Cmd c,unsigned int flags)169 pe_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