ci: enable semgrep check on v13 branches and update rules (#25647)

* ci: enable semgrep on v13 branches

* ci: break semgrep steps for nicer output

* ci: update semgrep rules inline with frappe repo

.flake8

@@ -29,4 +29,5 @@ ignore =
     B950,
     W191,
 
-max-line-length = 200
+max-line-length = 200
+exclude=.github/helper/semgrep_rules

.github/helper/semgrep_rules/frappe_correctness.py

@@ -4,25 +4,61 @@ from frappe import _, flt
 from frappe.model.document import Document
 
 
+# ruleid: frappe-modifying-but-not-comitting
 def on_submit(self):
 	if self.value_of_goods == 0:
 		frappe.throw(_('Value of goods cannot be 0'))
-	# ruleid: frappe-modifying-after-submit
 	self.status = 'Submitted'
 
+
+# ok: frappe-modifying-but-not-comitting
 def on_submit(self):
-	if flt(self.per_billed) < 100:
-		self.update_billing_status()
-	else:
-		# todook: frappe-modifying-after-submit
-		self.status = "Completed"
-		self.db_set("status", "Completed")
+	if self.value_of_goods == 0:
+		frappe.throw(_('Value of goods cannot be 0'))
+	self.status = 'Submitted'
+	self.db_set('status', 'Submitted')
 
-class TestDoc(Document):
-	pass
+# ok: frappe-modifying-but-not-comitting
+def on_submit(self):
+	if self.value_of_goods == 0:
+		frappe.throw(_('Value of goods cannot be 0'))
+	x = "y"
+	self.status = x
+	self.db_set('status', x)
 
-	def validate(self):
-		#ruleid: frappe-modifying-child-tables-while-iterating
-		for item in self.child_table:
-			if item.value < 0:
-				self.remove(item)
+
+# ok: frappe-modifying-but-not-comitting
+def on_submit(self):
+	x = "y"
+	self.status = x
+	self.save()
+
+# ruleid: frappe-modifying-but-not-comitting-other-method
+class DoctypeClass(Document):
+	def on_submit(self):
+		self.good_method()
+		self.tainted_method()
+
+	def tainted_method(self):
+		self.status = "uptate"
+
+
+# ok: frappe-modifying-but-not-comitting-other-method
+class DoctypeClass(Document):
+	def on_submit(self):
+		self.good_method()
+		self.tainted_method()
+
+	def tainted_method(self):
+		self.status = "update"
+		self.db_set("status", "update")
+
+# ok: frappe-modifying-but-not-comitting-other-method
+class DoctypeClass(Document):
+	def on_submit(self):
+		self.good_method()
+		self.tainted_method()
+		self.save()
+
+	def tainted_method(self):
+		self.status = "uptate"

.github/helper/semgrep_rules/frappe_correctness.yml

@@ -1,32 +1,93 @@
 # This file specifies rules for correctness according to how frappe doctype data model works.
 
 rules:
-- id: frappe-modifying-after-submit
+- id: frappe-modifying-but-not-comitting
   patterns:
-    - pattern: self.$ATTR = ...
-    - pattern-inside: |
-        def on_submit(self, ...):
+    - pattern: |
+        def $METHOD(self, ...):
           ...
+          self.$ATTR = ...
+    - pattern-not: |
+        def $METHOD(self, ...):
+          ...
+          self.$ATTR = ...
+          ...
+          self.db_set(..., self.$ATTR, ...)
+    - pattern-not: |
+        def $METHOD(self, ...):
+          ...
+          self.$ATTR = $SOME_VAR
+          ...
+          self.db_set(..., $SOME_VAR, ...)
+    - pattern-not: |
+        def $METHOD(self, ...):
+          ...
+          self.$ATTR = $SOME_VAR
+          ...
+          self.save()
     - metavariable-regex:
         metavariable: '$ATTR'
         # this is negative look-ahead, add more attrs to ignore like (ignore|ignore_this_too|ignore_me)
-        regex: '^(?!status_updater)(.*)$'
+        regex: '^(?!ignore_linked_doctypes|status_updater)(.*)$'
+    - metavariable-regex:
+        metavariable: "$METHOD"
+        regex: "(on_submit|on_cancel)"
   message: |
-    Doctype modified after submission. Please check if modification of self.$ATTR is commited to database.
+    DocType modified in self.$METHOD. Please check if modification of self.$ATTR is commited to database.
   languages: [python]
   severity: ERROR
 
-- id: frappe-modifying-after-cancel
+- id: frappe-modifying-but-not-comitting-other-method
   patterns:
-    - pattern: self.$ATTR = ...
-    - pattern-inside: |
-        def on_cancel(self, ...):
+  - pattern: |
+      class $DOCTYPE(...):
+        def $METHOD(self, ...):
           ...
-    - metavariable-regex:
-        metavariable: '$ATTR'
-        regex: '^(?!ignore_linked_doctypes|status_updater)(.*)$'
+          self.$ANOTHER_METHOD()
+          ...
+
+        def $ANOTHER_METHOD(self, ...):
+          ...
+          self.$ATTR = ...
+  - pattern-not: |
+      class $DOCTYPE(...):
+        def $METHOD(self, ...):
+          ...
+          self.$ANOTHER_METHOD()
+          ...
+
+        def $ANOTHER_METHOD(self, ...):
+          ...
+          self.$ATTR = ...
+          ...
+          self.db_set(..., self.$ATTR, ...)
+  - pattern-not: |
+      class $DOCTYPE(...):
+        def $METHOD(self, ...):
+          ...
+          self.$ANOTHER_METHOD()
+          ...
+
+        def $ANOTHER_METHOD(self, ...):
+          ...
+          self.$ATTR = $SOME_VAR
+          ...
+          self.db_set(..., $SOME_VAR, ...)
+  - pattern-not: |
+      class $DOCTYPE(...):
+        def $METHOD(self, ...):
+          ...
+          self.$ANOTHER_METHOD()
+          ...
+          self.save()
+        def $ANOTHER_METHOD(self, ...):
+          ...
+          self.$ATTR = ...
+  - metavariable-regex:
+      metavariable: "$METHOD"
+      regex: "(on_submit|on_cancel)"
   message: |
-    Doctype modified after cancellation. Please check if modification of self.$ATTR is commited to database.
+    self.$ANOTHER_METHOD is called from self.$METHOD, check if changes to self.$ATTR are commited to database.
   languages: [python]
   severity: ERROR
 

.github/helper/semgrep_rules/translate.js

@@ -35,3 +35,10 @@ __('You have' + 'subscribers in your mailing list.')
 // ruleid: frappe-translation-js-splitting
 __('You have {0} subscribers' +
     'in your mailing list', [subscribers.length])
+
+// ok: frappe-translation-js-splitting
+__("Ctrl+Enter to add comment")
+
+// ruleid: frappe-translation-js-splitting
+__('You have {0} subscribers \
+    in your mailing list', [subscribers.length])

.github/helper/semgrep_rules/translate.yml

@@ -42,9 +42,10 @@ rules:
 
 - id: frappe-translation-python-splitting
   pattern-either:
-  - pattern: _(...) + ... + _(...)
+  - pattern: _(...) + _(...)
   - pattern: _("..." + "...")
-  - pattern-regex: '_\([^\)]*\\\s*'
+  - pattern-regex: '_\([^\)]*\\\s*'    # lines broken by `\`
+  - pattern-regex: '_\(\s*\n'          # line breaks allowed by python for using ( )
   message: |
     Do not split strings inside translate function. Do not concatenate using translate functions.
     Please refer: https://frappeframework.com/docs/user/en/translations
@@ -53,8 +54,8 @@ rules:
 
 - id: frappe-translation-js-splitting
   pattern-either:
-  - pattern-regex: '__\([^\)]*[\+\\]\s*'
-  - pattern: __('...' + '...')
+  - pattern-regex: '__\([^\)]*[\\]\s+'
+  - pattern: __('...' + '...', ...)
   - pattern: __('...') + __('...')
   message: |
     Do not split strings inside translate function. Do not concatenate using translate functions.

.github/workflows/semgrep.yml

@@ -4,6 +4,8 @@ on:
   pull_request:
     branches:
       - develop
+      - version-13-hotfix
+      - version-13-pre-release
 jobs:
   semgrep:
     name: Frappe Linter
@@ -14,11 +16,19 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: 3.8
-    - name: Run semgrep
+
+    - name: Setup semgrep
       run: |
         python -m pip install -q semgrep
         git fetch origin $GITHUB_BASE_REF:$GITHUB_BASE_REF -q
+
+    - name: Semgrep errors
+      run: |
         files=$(git diff --name-only --diff-filter=d $GITHUB_BASE_REF)
         [[ -d .github/helper/semgrep_rules ]] && semgrep --severity ERROR --config=.github/helper/semgrep_rules --quiet --error $files
         semgrep --config="r/python.lang.correctness" --quiet --error $files
+
+    - name: Semgrep warnings
+      run: |
+        files=$(git diff --name-only --diff-filter=d $GITHUB_BASE_REF)
         [[ -d .github/helper/semgrep_rules ]] && semgrep --severity WARNING --severity INFO --config=.github/helper/semgrep_rules --quiet $files