Annotation of embedaddon/php/ext/fileinfo/libmagic/elfclass.h, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (c) Christos Zoulas 2008.
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 immediately at the beginning of the file, without modification,
10: * this list of conditions, and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: *
15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
19: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25: * SUCH DAMAGE.
26: */
27: if (nbytes <= sizeof(elfhdr))
28: return 0;
29:
30: u.l = 1;
31: (void)memcpy(&elfhdr, buf, sizeof elfhdr);
32: swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA];
33:
34: type = elf_getu16(swap, elfhdr.e_type);
35: switch (type) {
36: #ifdef ELFCORE
37: case ET_CORE:
38: if (dophn_core(ms, clazz, swap, fd,
39: (off_t)elf_getu(swap, elfhdr.e_phoff),
40: elf_getu16(swap, elfhdr.e_phnum),
41: (size_t)elf_getu16(swap, elfhdr.e_phentsize),
42: fsize, &flags) == -1)
43: return -1;
44: break;
45: #endif
46: case ET_EXEC:
47: case ET_DYN:
48: if (dophn_exec(ms, clazz, swap, fd,
49: (off_t)elf_getu(swap, elfhdr.e_phoff),
50: elf_getu16(swap, elfhdr.e_phnum),
51: (size_t)elf_getu16(swap, elfhdr.e_phentsize),
52: fsize, &flags, elf_getu16(swap, elfhdr.e_shnum))
53: == -1)
54: return -1;
55: /*FALLTHROUGH*/
56: case ET_REL:
57: if (doshn(ms, clazz, swap, fd,
58: (off_t)elf_getu(swap, elfhdr.e_shoff),
59: elf_getu16(swap, elfhdr.e_shnum),
60: (size_t)elf_getu16(swap, elfhdr.e_shentsize),
61: &flags,
62: elf_getu16(swap, elfhdr.e_machine)) == -1)
63: return -1;
64: break;
65:
66: default:
67: break;
68: }
69: return 1;
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