1/* Copyright (C) 2007 Red Hat, Inc.
2   This file is part of elfutils.
3
4   This file is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 3 of the License, or
7   (at your option) any later version.
8
9   elfutils is distributed in the hope that it will be useful, but
10   WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
16
17#ifdef HAVE_CONFIG_H
18# include <config.h>
19#endif
20
21#include <ar.h>
22#include <fcntl.h>
23#include <libelf.h>
24#include <stdio.h>
25#include <unistd.h>
26
27
28static int handle (const char *fname);
29
30
31int
32main (int argc, char *argv[])
33{
34  elf_version (EV_CURRENT);
35
36  int result = 0;
37  if (argc == 1)
38    result = handle ("a.out");
39  else
40    for (int i = 1; i < argc; ++i)
41      result |= handle (argv[1]);
42
43  return result;
44}
45
46
47static int
48handle (const char *fname)
49{
50  int fd = open (fname, O_RDONLY);
51  if (fd == -1)
52    {
53      printf ("cannot open '%s': %m\n", fname);
54      return 1;
55    }
56
57  Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
58  if (elf == NULL)
59    {
60      printf ("cannot get ELF handling for '%s': %s\n",
61	      fname, elf_errmsg (-1));
62      close (fd);
63      return 1;
64    }
65
66  if (elf_kind (elf) != ELF_K_AR)
67    {
68      printf ("'%s' is no archive\n", fname);
69      elf_end (elf);
70      close (fd);
71      return 1;
72    }
73
74  printf ("%s:\n", fname);
75  Elf *subelf = NULL;
76  Elf_Cmd cmd = ELF_C_READ_MMAP;
77  while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
78    {
79      Elf_Arhdr *arhdr = elf_getarhdr (subelf);
80      if (arhdr == NULL)
81	{
82	  printf ("cannot get archive header in '%s': %s\n",
83		  fname, elf_errmsg (-1));
84	  elf_end (subelf);
85	  elf_end (elf);
86	  close (fd);
87	  return 1;
88	}
89
90      off_t off = elf_getaroff (subelf);
91
92      printf ("\nOffset    %llu\n"
93	      "  Name    %s\n"
94	      "  Date    %ld\n"
95	      "  UID     %d\n"
96	      "  GID     %d\n"
97	      "  Mode    %o\n"
98	      "  Size    %lld\n",
99	      (unsigned long long int) off,
100	      arhdr->ar_name, (long int) arhdr->ar_date, (int) arhdr->ar_uid,
101	      (int) arhdr->ar_gid,
102	      (int) arhdr->ar_mode, (long long int) arhdr->ar_size);
103
104      cmd = elf_next (subelf);
105      elf_end (subelf);
106    }
107
108  close (fd);
109
110  return 0;
111}
112