mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-22 19:08:09 +01:00
2b62ca2e3b
This is the result of running
$ uncrustify --replace --config ../devel/uncrustify.cfg *.c *.h *.cc
in the lib directory
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/* sha1.c - Interfaces to SHA-1 hash for the notmuch mail system
|
|
*
|
|
* Copyright © 2009 Carl Worth
|
|
*
|
|
* 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, see https://www.gnu.org/licenses/ .
|
|
*
|
|
* Author: Carl Worth <cworth@cworth.org>
|
|
*/
|
|
|
|
#include "notmuch-private.h"
|
|
|
|
#include <glib.h>
|
|
|
|
/* Create a hexadecimal string version of the SHA-1 digest of 'str'
|
|
* (including its null terminating character).
|
|
*
|
|
* This function returns a newly allocated string which the caller
|
|
* should free() when finished.
|
|
*/
|
|
char *
|
|
_notmuch_sha1_of_string (const char *str)
|
|
{
|
|
GChecksum *sha1;
|
|
char *digest;
|
|
|
|
sha1 = g_checksum_new (G_CHECKSUM_SHA1);
|
|
g_checksum_update (sha1, (const guchar *) str, strlen (str) + 1);
|
|
digest = xstrdup (g_checksum_get_string (sha1));
|
|
g_checksum_free (sha1);
|
|
|
|
return digest;
|
|
}
|
|
|
|
/* Create a hexadecimal string version of the SHA-1 digest of the
|
|
* contents of the named file.
|
|
*
|
|
* This function returns a newly allocated string which the caller
|
|
* should free() when finished.
|
|
*
|
|
* If any error occurs while reading the file, (permission denied,
|
|
* file not found, etc.), this function returns NULL.
|
|
*/
|
|
char *
|
|
_notmuch_sha1_of_file (const char *filename)
|
|
{
|
|
FILE *file;
|
|
|
|
#define BLOCK_SIZE 4096
|
|
unsigned char block[BLOCK_SIZE];
|
|
size_t bytes_read;
|
|
GChecksum *sha1;
|
|
char *digest = NULL;
|
|
|
|
file = fopen (filename, "r");
|
|
if (file == NULL)
|
|
return NULL;
|
|
|
|
sha1 = g_checksum_new (G_CHECKSUM_SHA1);
|
|
if (sha1 == NULL)
|
|
goto DONE;
|
|
|
|
while (1) {
|
|
bytes_read = fread (block, 1, 4096, file);
|
|
if (bytes_read == 0) {
|
|
if (feof (file))
|
|
break;
|
|
else if (ferror (file))
|
|
goto DONE;
|
|
} else {
|
|
g_checksum_update (sha1, block, bytes_read);
|
|
}
|
|
}
|
|
|
|
digest = xstrdup (g_checksum_get_string (sha1));
|
|
|
|
DONE:
|
|
if (sha1)
|
|
g_checksum_free (sha1);
|
|
if (file)
|
|
fclose (file);
|
|
|
|
return digest;
|
|
}
|