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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
commit | e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch) | |
tree | 68cb5ef9081156392f1dd62a00c6ccc1451b93df /wiretap/json.c | |
parent | Initial commit. (diff) | |
download | wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip |
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'wiretap/json.c')
-rw-r--r-- | wiretap/json.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/wiretap/json.c b/wiretap/json.c new file mode 100644 index 0000000..e2213e9 --- /dev/null +++ b/wiretap/json.c @@ -0,0 +1,108 @@ +/* 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) + +static int json_file_type_subtype = -1; + +void register_json(void); + +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 = json_file_type_subtype; + 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; +} + +static const struct supported_block_type json_blocks_supported[] = { + /* + * This is a file format that we dissect, so we provide only one + * "packet" with the file's contents, and don't support any + * options. + */ + { WTAP_BLOCK_PACKET, ONE_BLOCK_SUPPORTED, NO_OPTIONS_SUPPORTED } +}; + +static const struct file_type_subtype_info json_info = { + "JavaScript Object Notation", "json", "json", NULL, + FALSE, BLOCKS_SUPPORTED(json_blocks_supported), + NULL, NULL, NULL +}; + +void register_json(void) +{ + json_file_type_subtype = wtap_register_file_type_subtype(&json_info); + + /* + * Register name for backwards compatibility with the + * wtap_filetypes table in Lua. + */ + wtap_register_backwards_compatibility_lua_name("JSON", + json_file_type_subtype); +} + +/* + * 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: + */ |