fix: improve url and jinja string escapes (#585)

ansiblelater/rules/CheckCommandInsteadOfModule.py

@@ -39,9 +39,12 @@ class CheckCommandInsteadOfModule(StandardBase):
                 if task["action"]["__ansible_module__"] in commands:
                     first_cmd_arg = self.get_first_cmd_arg(task)
                     executable = os.path.basename(first_cmd_arg)
+                    cmd = cmd = self.get_safe_cmd(task)
+
                     if (
                         first_cmd_arg and executable in modules
                         and task["action"].get("warn", True) and "register" not in task
+                        and not any(ch in cmd for ch in self.SHELL_PIPE_CHARS)
                     ):
                         errors.append(
                             self.Error(

ansiblelater/rules/CheckShellInsteadCommand.py

@@ -1,5 +1,3 @@
-import re
-
 from ansiblelater.standard import StandardBase
 
 
@@ -22,13 +20,8 @@ class CheckShellInsteadCommand(StandardBase):
                     if "executable" in task["action"]:
                         continue
 
-                    if "cmd" in task["action"]:
-                        cmd = task["action"].get("cmd", [])
-                    else:
-                        cmd = " ".join(task["action"].get("__ansible_arguments__", []))
-
-                    unjinja = re.sub(r"\{\{[^\}]*\}\}", "JINJA_VAR", cmd)
-                    if not any(ch in unjinja for ch in "&|<>;$\n*[]{}?"):
+                    cmd = self.get_safe_cmd(task)
+                    if not any(ch in cmd for ch in self.SHELL_PIPE_CHARS):
                         errors.append(self.Error(task["__line__"], self.helptext))
 
         return self.Result(candidate.path, errors)

ansiblelater/standard.py

@@ -8,6 +8,7 @@ import pathlib
 import re
 from abc import ABCMeta, abstractmethod
 from collections import defaultdict
+from urllib.parse import urlparse
 
 import toolz
 import yaml
@@ -44,6 +45,8 @@ class StandardExtendedMeta(StandardMeta, ABCMeta):
 
 class StandardBase(metaclass=StandardExtendedMeta):
 
+    SHELL_PIPE_CHARS = "&|<>;$\n*[]{}?"
+
     @property
     @abstractmethod
     def sid(self):
@@ -246,6 +249,22 @@ class StandardBase(metaclass=StandardExtendedMeta):
 
         return first_cmd_arg
 
+    @staticmethod
+    def get_safe_cmd(task):
+        if "cmd" in task["action"]:
+            cmd = task["action"].get("cmd", "")
+        else:
+            cmd = " ".join(task["action"].get("__ansible_arguments__", []))
+
+        cmd = re.sub(r"{{.+?}}", "JINJA_EXPRESSION", cmd)
+        cmd = re.sub(r"{%.+?%}", "JINJA_STATEMENT", cmd)
+        cmd = re.sub(r"{#.+?#}", "JINJA_COMMENT", cmd)
+
+        parts = cmd.split()
+        parts = [p if not urlparse(p.strip('"').strip("'")).scheme else "URL" for p in parts]
+
+        return " ".join(parts)
+
     class Error:
         """Default error object created if a rule failed."""