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/*
* cook - file construction tool
* Copyright (C) 1999, 2006, 2007 Peter Miller;
* All rights reserved.
*
* 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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* MANIFEST: functions to manipulate calculates
*/
#include <common/ac/errno.h>
#include <cook/archive.h>
#include <common/error_intl.h>
#include <cook/fingerprint.h>
#include <common/fp/combined.h>
#include <common/str.h>
#include <common/trace.h>
/*
* NAME
* fp_calculate
*
* SYNOPSIS
* string_ty *fp_calculate(string_ty *path);
*
* DESCRIPTION
* The fp_calculate function is used to read the given file
* to calculate its fingerprint. The cryptographically string
* fingerprint is returned in a string. If the file does not exist,
* the NULL pointer is returned.
*/
string_ty *
fp_fingerprint(string_ty *path)
{
char buffer[1000];
fingerprint_ty *fp;
int err;
sub_context_ty *scp;
string_ty *result;
trace(("fp_fingerprint(path = \"%s\")\n{\n", path->str_text));
fp = fingerprint_new(&fp_combined);
err = fingerprint_file_sum(fp, path->str_text, buffer, sizeof(buffer));
if (err && errno == ENOENT)
err = archive_fingerprint(fp, path, buffer, sizeof(buffer));
if (err)
{
switch (errno)
{
case ENOTDIR:
case EISDIR:
case ENOENT:
break;
default:
scp = sub_context_new();
sub_errno_set(scp);
sub_var_set_string(scp, "File_Name", path);
fatal_intl(scp, i18n("fingerprint \"$filename\": $errno"));
/* NOTREACHED */
sub_context_delete(scp);
break;
}
result = 0;
}
else
result = str_from_c(buffer);
fingerprint_delete(fp);
trace(("return \"%s\";\n", result ? result->str_text : ""));
trace(("}\n"));
return result;
}
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