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/* json.c
*
* Copyright 2015, Dario Lombardo <lomato@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <string.h>
#include "wtap-int.h"
#include "file_wrappers.h"
#include "json.h"
#include <wsutil/wsjson.h>
/* Maximum size of json file. */
#define MAX_FILE_SIZE (50*1024*1024)
wtap_open_return_val json_open(wtap *wth, int *err, gchar **err_info)
{
guint8* filebuf;
int bytes_read;
/* XXX checking the full file contents might be a bit expensive, maybe
* resort to simpler heuristics like '{' or '[' (with some other chars)? */
filebuf = (guint8*)g_malloc0(MAX_FILE_SIZE);
if (!filebuf)
return WTAP_OPEN_ERROR;
bytes_read = file_read(filebuf, MAX_FILE_SIZE, wth->fh);
if (bytes_read < 0) {
/* Read error. */
*err = file_error(wth->fh, err_info);
g_free(filebuf);
return WTAP_OPEN_ERROR;
}
if (bytes_read == 0) {
/* empty file, not *anybody's* */
g_free(filebuf);
return WTAP_OPEN_NOT_MINE;
}
if (json_validate(filebuf, bytes_read) == FALSE) {
g_free(filebuf);
return WTAP_OPEN_NOT_MINE;
}
if (file_seek(wth->fh, 0, SEEK_SET, err) == -1) {
g_free(filebuf);
return WTAP_OPEN_ERROR;
}
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_JSON;
wth->file_encap = WTAP_ENCAP_JSON;
wth->file_tsprec = WTAP_TSPREC_SEC;
wth->subtype_read = wtap_full_file_read;
wth->subtype_seek_read = wtap_full_file_seek_read;
wth->snapshot_length = 0;
g_free(filebuf);
return WTAP_OPEN_MINE;
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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