LookingGlass/client/utils.c

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/*
Looking Glass - KVM FrameRelay (KVMFR) Client
2019-02-22 11:16:14 +00:00
Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
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 02111-1307 USA
*/
#include "utils.h"
#include "debug.h"
#include <stdlib.h>
#include <stdio.h>
bool file_get_contents(const char * filename, char ** buffer, size_t * length)
{
FILE * fh = fopen(filename, "r");
if (!fh)
{
DEBUG_ERROR("Failed to open the file: %s", filename);
return false;
}
if (fseek(fh, 0, SEEK_END) != 0)
{
DEBUG_ERROR("Failed to seek");
fclose(fh);
return false;
}
long fsize = ftell(fh);
if (fseek(fh, 0, SEEK_SET) != 0)
{
DEBUG_ERROR("Failed to seek");
fclose(fh);
return false;
}
*buffer = malloc(fsize + 1);
if (!*buffer)
{
DEBUG_ERROR("Failed to allocate buffer of %lu bytes", fsize + 1);
fclose(fh);
return false;
}
if (fread(*buffer, 1, fsize, fh) != fsize)
{
DEBUG_ERROR("Failed to read the entire file");
fclose(fh);
free(*buffer);
return false;
}
fclose(fh);
buffer[fsize] = 0;
*length = fsize;
return true;
}