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cti-python-stix2/docs/guide/ts_support.ipynb

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{
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{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"nbsphinx": "hidden"
},
"outputs": [],
"source": [
"# Delete this cell to re-enable tracebacks\n",
"import sys\n",
"ipython = get_ipython()\n",
"\n",
"def hide_traceback(exc_tuple=None, filename=None, tb_offset=None,\n",
" exception_only=False, running_compiled_code=False):\n",
" etype, value, tb = sys.exc_info()\n",
" value.__cause__ = None # suppress chained exceptions\n",
" return ipython._showtraceback(etype, value, ipython.InteractiveTB.get_exception_only(etype, value))\n",
"\n",
"ipython.showtraceback = hide_traceback"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"nbsphinx": "hidden"
},
"outputs": [],
"source": [
"# JSON output syntax highlighting\n",
"from __future__ import print_function\n",
"from pygments import highlight\n",
"from pygments.lexers import JsonLexer, TextLexer\n",
"from pygments.formatters import HtmlFormatter\n",
"from IPython.display import display, HTML\n",
"from IPython.core.interactiveshell import InteractiveShell\n",
"\n",
"InteractiveShell.ast_node_interactivity = \"all\"\n",
"\n",
"def json_print(inpt):\n",
" string = str(inpt)\n",
" formatter = HtmlFormatter()\n",
" if string[0] == '{':\n",
" lexer = JsonLexer()\n",
" else:\n",
" lexer = TextLexer()\n",
" return HTML('<style type=\"text/css\">{}</style>{}'.format(\n",
" formatter.get_style_defs('.highlight'),\n",
" highlight(string, lexer, formatter)))\n",
"\n",
"globals()['print'] = json_print"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Technical Specification Support\n",
"\n",
"### How imports work\n",
"\n",
"Imports can be used in different ways depending on the use case and support levels.\n",
"\n",
"People who want to support the latest version of STIX 2 without having to make changes, can implicitly use the latest version:",
"<div class=\"alert alert-warning\">\n",
"\n",
"**Warning**\n",
"\n",
"The implicit import method can cause the code to break between major releases to support a newer approved committee specification. Therefore, not recommended for large scale applications relying on specific object support.\n",
"\n",
"</div>"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"import stix2\n",
"\n",
"stix2.Indicator()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"or,"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"from stix2 import Indicator\n",
"\n",
"Indicator()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"People who want to use an explicit version:"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"import stix2.v20\n",
"\n",
"stix2.v20.Indicator()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"or,"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"from stix2.v20 import Indicator\n",
"\n",
"Indicator()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"or even, (less preferred)"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"import stix2.v20 as stix2\n",
"\n",
"stix2.Indicator()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"The last option makes it easy to update to a new version in one place per file, once you've made the deliberate action to do this.\n",
"\n",
"People who want to use multiple versions in a single file:"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"import stix2\n",
"\n",
"stix2.v20.Indicator()\n",
"stix2.v21.Indicator()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"or,"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"from stix2 import v20, v21\n",
"\n",
"v20.Indicator()\n",
"v21.Indicator()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"or (less preferred):"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"from stix2.v20 import Indicator as Indicator_v20\n",
"from stix2.v21 import Indicator as Indicator_v21\n",
"\n",
"Indicator_v20()\n",
"Indicator_v21()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### How parsing works\n",
"If the ``version`` positional argument is not provided the library will make the best attempt using the \"spec_version\" property found on a Bundle, SDOs, SCOs, or SROs.\n",
"\n",
"You can lock your [parse()](../api/stix2.core.rst#stix2.core.parse) method to a specific STIX version by:"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [
{
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".highlight .il { color: #666666 } /* Literal.Number.Integer.Long */</style><div class=\"highlight\"><pre><span></span><span class=\"p\">{</span>\n",
" <span class=\"nt\">&quot;type&quot;</span><span class=\"p\">:</span> <span class=\"s2\">&quot;indicator&quot;</span><span class=\"p\">,</span>\n",
" <span class=\"nt\">&quot;id&quot;</span><span class=\"p\">:</span> <span class=\"s2\">&quot;indicator--dbcbd659-c927-4f9a-994f-0a2632274394&quot;</span><span class=\"p\">,</span>\n",
" <span class=\"nt\">&quot;created&quot;</span><span class=\"p\">:</span> <span class=\"s2\">&quot;2017-09-26T23:33:39.829Z&quot;</span><span class=\"p\">,</span>\n",
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" <span class=\"nt\">&quot;name&quot;</span><span class=\"p\">:</span> <span class=\"s2\">&quot;File hash for malware variant&quot;</span><span class=\"p\">,</span>\n",
" <span class=\"nt\">&quot;pattern&quot;</span><span class=\"p\">:</span> <span class=\"s2\">&quot;[file:hashes.md5 = &#39;d41d8cd98f00b204e9800998ecf8427e&#39;]&quot;</span><span class=\"p\">,</span>\n",
" <span class=\"nt\">&quot;valid_from&quot;</span><span class=\"p\">:</span> <span class=\"s2\">&quot;2017-09-26T23:33:39.829952Z&quot;</span><span class=\"p\">,</span>\n",
" <span class=\"nt\">&quot;labels&quot;</span><span class=\"p\">:</span> <span class=\"p\">[</span>\n",
" <span class=\"s2\">&quot;malicious-activity&quot;</span>\n",
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"execution_count": 3,
"metadata": {},
"output_type": "execute_result"
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],
"source": [
"from stix2 import parse\n",
"\n",
"indicator = parse(\"\"\"{\n",
" \"type\": \"indicator\",\n",
" \"id\": \"indicator--dbcbd659-c927-4f9a-994f-0a2632274394\",\n",
" \"created\": \"2017-09-26T23:33:39.829Z\",\n",
" \"modified\": \"2017-09-26T23:33:39.829Z\",\n",
" \"labels\": [\n",
" \"malicious-activity\"\n",
" ],\n",
" \"name\": \"File hash for malware variant\",\n",
" \"pattern\": \"[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']\",\n",
" \"valid_from\": \"2017-09-26T23:33:39.829952Z\"\n",
"}\"\"\", version=\"2.0\")\n",
"print(indicator)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"In the example above if a 2.1 or higher object is parsed, the operation will fail."
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### How custom content works\n",
"\n",
"[CustomObject](../api/v21/stix2.v21.sdo.rst#stix2.v21.sdo.CustomObject), [CustomObservable](../api/v21/stix2.v21.observables.rst#stix2.v21.observables.CustomObservable), [CustomMarking](../api/v21/stix2.v21.common.rst#stix2.v21.common.CustomMarking) and [CustomExtension](../api/v21/stix2.v21.observables.rst#stix2.v21.observables.CustomExtension) must be registered explicitly by STIX version. This is a design decision since properties or requirements may change as the STIX Technical Specification advances.\n",
"\n",
"You can perform this by:"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [],
"source": [
"import stix2\n",
"\n",
"# Make my custom observable available in STIX 2.0\n",
"@stix2.v20.CustomObservable('x-new-object-type',\n",
" [(\"prop\", stix2.properties.BooleanProperty())])\n",
"class NewObject2(object):\n",
" pass\n",
"\n",
"\n",
"# Make my custom observable available in STIX 2.1\n",
"@stix2.v21.CustomObservable('x-new-object-type',\n",
" [(\"prop\", stix2.properties.BooleanProperty())])\n",
"class NewObject2(object):\n",
" pass"
]
}
],
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