159 lines
3.5 KiB
C
159 lines
3.5 KiB
C
/* ldbuildid.c - Build Id support routines
|
|
Copyright (C) 2013-2015 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU Binutils.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include "sysdep.h"
|
|
#include "bfd.h"
|
|
#include "safe-ctype.h"
|
|
#include "md5.h"
|
|
#include "sha1.h"
|
|
#include "ldbuildid.h"
|
|
|
|
#define streq(a,b) strcmp ((a), (b)) == 0
|
|
#define strneq(a,b,n) strncmp ((a), (b), (n)) == 0
|
|
|
|
bfd_boolean
|
|
validate_build_id_style (const char *style)
|
|
{
|
|
if ((streq (style, "md5")) || (streq (style, "sha1"))
|
|
#ifndef __MINGW32__
|
|
|| (streq (style, "uuid"))
|
|
#endif
|
|
|| (strneq (style, "0x", 2)))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
bfd_size_type
|
|
compute_build_id_size (const char *style)
|
|
{
|
|
if (streq (style, "md5") || streq (style, "uuid"))
|
|
return 128 / 8;
|
|
|
|
if (streq (style, "sha1"))
|
|
return 160 / 8;
|
|
|
|
if (strneq (style, "0x", 2))
|
|
{
|
|
bfd_size_type size = 0;
|
|
/* ID is in string form (hex). Count the bytes. */
|
|
const char *id = style + 2;
|
|
|
|
do
|
|
{
|
|
if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
|
|
{
|
|
++size;
|
|
id += 2;
|
|
}
|
|
else if (*id == '-' || *id == ':')
|
|
++id;
|
|
else
|
|
{
|
|
size = 0;
|
|
break;
|
|
}
|
|
} while (*id != '\0');
|
|
return size;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned char
|
|
read_hex (const char xdigit)
|
|
{
|
|
if (ISDIGIT (xdigit))
|
|
return xdigit - '0';
|
|
|
|
if (ISUPPER (xdigit))
|
|
return xdigit - 'A' + 0xa;
|
|
|
|
if (ISLOWER (xdigit))
|
|
return xdigit - 'a' + 0xa;
|
|
|
|
abort ();
|
|
return 0;
|
|
}
|
|
|
|
bfd_boolean
|
|
generate_build_id (bfd *abfd,
|
|
const char *style,
|
|
checksum_fn checksum_contents,
|
|
unsigned char *id_bits,
|
|
int size ATTRIBUTE_UNUSED)
|
|
{
|
|
if (streq (style, "md5"))
|
|
{
|
|
struct md5_ctx ctx;
|
|
|
|
md5_init_ctx (&ctx);
|
|
if (!(*checksum_contents) (abfd, (sum_fn) &md5_process_bytes, &ctx))
|
|
return FALSE;
|
|
md5_finish_ctx (&ctx, id_bits);
|
|
}
|
|
else if (streq (style, "sha1"))
|
|
{
|
|
struct sha1_ctx ctx;
|
|
|
|
sha1_init_ctx (&ctx);
|
|
if (!(*checksum_contents) (abfd, (sum_fn) &sha1_process_bytes, &ctx))
|
|
return FALSE;
|
|
sha1_finish_ctx (&ctx, id_bits);
|
|
}
|
|
#ifndef __MINGW32__
|
|
else if (streq (style, "uuid"))
|
|
{
|
|
int n;
|
|
int fd = open ("/dev/urandom", O_RDONLY);
|
|
|
|
if (fd < 0)
|
|
return FALSE;
|
|
n = read (fd, id_bits, size);
|
|
close (fd);
|
|
if (n < size)
|
|
return FALSE;
|
|
}
|
|
#endif
|
|
else if (strneq (style, "0x", 2))
|
|
{
|
|
/* ID is in string form (hex). Convert to bits. */
|
|
const char *id = style + 2;
|
|
size_t n = 0;
|
|
|
|
do
|
|
{
|
|
if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
|
|
{
|
|
id_bits[n] = read_hex (*id++) << 4;
|
|
id_bits[n++] |= read_hex (*id++);
|
|
}
|
|
else if (*id == '-' || *id == ':')
|
|
++id;
|
|
else
|
|
abort (); /* Should have been validated earlier. */
|
|
} while (*id != '\0');
|
|
}
|
|
else
|
|
abort (); /* Should have been validated earlier. */
|
|
|
|
return TRUE;
|
|
}
|