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Add support for Metalink's md2, and md4 hashes

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* bootstrap.conf: Add crypto/md2, and crypto/md4
* src/metalink.c (retrieve_from_metalink): Add md2, and md4 support

This patch adds support for the deprecated (insecure) md2, and md4
Message-Digest algorithms to the Metalink module.
This commit is contained in:
Matthew White 2016-08-02 08:41:30 +02:00 committed by Tim Rühsen
parent edad3c1df3
commit 9db02a0c46
2 changed files with 30 additions and 2 deletions
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2
bootstrap.conf
View File

@ -64,6 +64,8 @@ memrchr
mkdir
mkstemp
mkostemp
crypto/md2
crypto/md4
crypto/md5
crypto/sha1
crypto/sha256

30
src/metalink.c
View File

@ -34,6 +34,8 @@ as that of the covered work. */
#include "retr.h"
#include "exits.h"
#include "utils.h"
#include "md2.h"
#include "md4.h"
#include "md5.h"
#include "sha1.h"
#include "sha256.h"
@ -181,6 +183,12 @@ retrieve_from_metalink (const metalink_t* metalink)
for (mchksum_ptr = mfile->checksums; *mchksum_ptr; mchksum_ptr++)
{
char md2[MD2_DIGEST_SIZE];
char md2_txt[2 * MD2_DIGEST_SIZE + 1];
char md4[MD4_DIGEST_SIZE];
char md4_txt[2 * MD4_DIGEST_SIZE + 1];
char md5[MD5_DIGEST_SIZE];
char md5_txt[2 * MD5_DIGEST_SIZE + 1];
@ -203,7 +211,9 @@ retrieve_from_metalink (const metalink_t* metalink)
mchksum = *mchksum_ptr;
/* I have seen both variants... */
if (c_strcasecmp (mchksum->type, "md5")
if (c_strcasecmp (mchksum->type, "md2")
&& c_strcasecmp (mchksum->type, "md4")
&& c_strcasecmp (mchksum->type, "md5")
&& c_strcasecmp (mchksum->type, "sha1")
&& c_strcasecmp (mchksum->type, "sha-1")
&& c_strcasecmp (mchksum->type, "sha224")
@ -225,7 +235,23 @@ retrieve_from_metalink (const metalink_t* metalink)
DEBUGP (("Declared hash: %s\n", mchksum->hash));
if (c_strcasecmp (mchksum->type, "md5") == 0)
if (c_strcasecmp (mchksum->type, "md2") == 0)
{
md2_stream (local_file, md2);
wg_hex_to_string (md2_txt, md2, MD2_DIGEST_SIZE);
DEBUGP (("Computed hash: %s\n", md2_txt));
if (!strcmp (md2_txt, mchksum->hash))
hash_ok = true;
}
else if (c_strcasecmp (mchksum->type, "md4") == 0)
{
md4_stream (local_file, md4);
wg_hex_to_string (md4_txt, md4, MD4_DIGEST_SIZE);
DEBUGP (("Computed hash: %s\n", md4_txt));
if (!strcmp (md4_txt, mchksum->hash))
hash_ok = true;
}
else if (c_strcasecmp (mchksum->type, "md5") == 0)
{
md5_stream (local_file, md5);
wg_hex_to_string (md5_txt, md5, MD5_DIGEST_SIZE);