commands: add the core command addon, and the command "set"

The set command sets an option using the same syntax as commandline --set.

3 files changed, 35 insertions, 0 deletions

diff --git a/mitmproxy/addons/__init__.py b/mitmproxy/addons/__init__.py
index e87f2cbd..fa194fc1 100644
--- a/mitmproxy/addons/__init__.py
+++ b/mitmproxy/addons/__init__.py
@@ -4,6 +4,7 @@ from mitmproxy.addons import check_alpn
 from mitmproxy.addons import check_ca
 from mitmproxy.addons import clientplayback
 from mitmproxy.addons import core_option_validation
+from mitmproxy.addons import core
 from mitmproxy.addons import disable_h2c
 from mitmproxy.addons import onboarding
 from mitmproxy.addons import proxyauth
@@ -20,6 +21,7 @@ from mitmproxy.addons import upstream_auth
 
 def default_addons():
     return [
+        core.Core(),
         core_option_validation.CoreOptionValidation(),
         anticache.AntiCache(),
         anticomp.AntiComp(),
diff --git a/mitmproxy/addons/core.py b/mitmproxy/addons/core.py
new file mode 100644
index 00000000..7b648403
--- /dev/null
+++ b/mitmproxy/addons/core.py
@@ -0,0 +1,18 @@
+from mitmproxy import ctx
+from mitmproxy import exceptions
+
+
+class Core:
+    def set(self, spec: str) -> None:
+        """
+            Set an option of the form "key[=value]". When the value is omitted,
+            booleans are set to true, strings and integers are set to None (if
+            permitted), and sequences are emptied.
+        """
+        try:
+            ctx.options.set(spec)
+        except exceptions.OptionsError as e:
+            raise exceptions.CommandError(e) from e
+
+    def load(self, l):
+        l.add_command("set", self.set)
diff --git a/test/mitmproxy/addons/test_core.py b/test/mitmproxy/addons/test_core.py
new file mode 100644
index 00000000..99bf3f40
--- /dev/null
+++ b/test/mitmproxy/addons/test_core.py
@@ -0,0 +1,15 @@
+from mitmproxy.addons import core
+from mitmproxy.test import taddons
+from mitmproxy import exceptions
+import pytest
+
+
+def test_set():
+    sa = core.Core()
+    with taddons.context() as tctx:
+        assert not tctx.master.options.anticomp
+        tctx.command(sa.set, "anticomp")
+        assert tctx.master.options.anticomp
+
+        with pytest.raises(exceptions.CommandError):
+            tctx.command(sa.set, "nonexistent")