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Code Issues

(svn r6257) Use memcmp() to check the MD5 sum instead of using a home brewed loop

release/0.5
tron 2006-08-31 07:52:20 +00:00
parent 45e34d555c
commit cd8f1cc63d
1 changed files with 4 additions and 12 deletions
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16
gfxinit.c
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@ -13,6 +13,7 @@
#include "newgrf.h" #include "newgrf.h"
#include "md5.h" #include "md5.h"
#include "variables.h" #include "variables.h"
#include <string.h>
typedef struct MD5File { typedef struct MD5File {
const char * const filename; // filename const char * const filename; // filename
@ -96,18 +97,9 @@ static void LoadGrfIndexed(const char* filename, const SpriteID* index_tbl, int
/* Check that the supplied MD5 hash matches that stored for the supplied filename */ /* Check that the supplied MD5 hash matches that stored for the supplied filename */
static bool CheckMD5Digest(const MD5File file, md5_byte_t *digest, bool warn) static bool CheckMD5Digest(const MD5File file, md5_byte_t *digest, bool warn)
{ {
uint i; if (memcmp(file.hash, digest, sizeof(file.hash)) == 0) return true;
if (warn) fprintf(stderr, "MD5 of %s is ****INCORRECT**** - File Corrupt.\n", file.filename);
/* Loop through each byte of the file MD5 and the stored MD5... */ return false;
for (i = 0; i < 16; i++) if (file.hash[i] != digest[i]) break;
/* If all bytes of the MD5's match (i.e. the MD5's match)... */
if (i == 16) {
return true;
} else {
if (warn) fprintf(stderr, "MD5 of %s is ****INCORRECT**** - File Corrupt.\n", file.filename);
return false;
};
} }
/* Calculate and check the MD5 hash of the supplied filename. /* Calculate and check the MD5 hash of the supplied filename.