Added validation for project working environment names

HISTORY.rst

@@ -20,6 +20,7 @@ PlatformIO Core 6
 * Improved source file filtering functionality for the `Static Code Analysis <https://docs.platformio.org/en/latest/advanced/static-code-analysis/index.html>`__ feature, making it easier to analyze only the code you need to
 * Added the ability to show a detailed library dependency tree only in `verbose mode <https://docs.platformio.org/en/latest/core/userguide/cmd_run.html#cmdoption-pio-run-v>`__, which can help you understand the relationship between libraries and troubleshoot issues more effectively (`issue #4517 <https://github.com/platformio/platformio-core/issues/4517>`_)
 * Added the ability to run only the `device monitor <https://docs.platformio.org/en/latest/core/userguide/device/cmd_monitor.html>`__ when using the `pio run -t monitor <https://docs.platformio.org/en/latest/core/userguide/cmd_run.html>`__ command, saving you time and resources by skipping the build process
+* Added validation for `project working environment names <https://docs.platformio.org/en/latest/projectconf/sections/env/index.html#working-env-name>`__ to ensure that they only contain lowercase letters ``a-z``, numbers ``0-9``, and special characters ``_`` (underscore) and ``-`` (hyphen)
 * Implemented a fix for shell injection vulnerabilities when converting INO files to CPP, ensuring your code is safe and secure (`issue #4532 <https://github.com/platformio/platformio-core/issues/4532>`_)
 * Restored the project generator for the `NetBeans IDE <https://docs.platformio.org/en/latest/integration/ide/netbeans.html>`__, providing you with more flexibility and options for your development workflow
 

platformio/project/config.py

@@ -39,6 +39,7 @@ CONFIG_HEADER = """
 
 
 class ProjectConfigBase:
+    ENVNAME_RE = re.compile(r"^[a-z\d\_\-]+$", flags=re.I)
     INLINE_COMMENT_RE = re.compile(r"\s+;.*$")
     VARTPL_RE = re.compile(r"\$\{([^\.\}\()]+)\.([^\}]+)\}")
 
@@ -388,16 +389,27 @@ class ProjectConfigBase:
     def validate(self, envs=None, silent=False):
         if not os.path.isfile(self.path):
             raise exception.NotPlatformIOProjectError(os.path.dirname(self.path))
+
+        known_envs = set(self.envs())
+
         # check envs
-        known = set(self.envs())
-        if not known:
+        if not known_envs:
             raise exception.ProjectEnvsNotAvailableError()
-        unknown = set(list(envs or []) + self.default_envs()) - known
-        if unknown:
-            raise exception.UnknownEnvNamesError(", ".join(unknown), ", ".join(known))
+        unknown_envs = set(list(envs or []) + self.default_envs()) - known_envs
+        if unknown_envs:
+            raise exception.UnknownEnvNamesError(
+                ", ".join(unknown_envs), ", ".join(known_envs)
+            )
+
+        # check envs names
+        for env in known_envs:
+            if not self.ENVNAME_RE.match(env):
+                raise exception.InvalidEnvNameError(env)
+
         if not silent:
             for warning in self.warnings:
                 click.secho("Warning! %s" % warning, fg="yellow")
+
         return True
 
 

platformio/project/exception.py

@@ -43,5 +43,12 @@ class UnknownEnvNamesError(ProjectError, UserSideException):
     MESSAGE = "Unknown environment names '{0}'. Valid names are '{1}'"
 
 
+class InvalidEnvNameError(ProjectError, UserSideException):
+    MESSAGE = (
+        "Invalid environment name '{0}'. The name can contain "
+        "alphanumeric, underscore, and hyphen characters (a-z, 0-9, -, _)"
+    )
+
+
 class ProjectOptionValueError(ProjectError, UserSideException):
     MESSAGE = "{0} for option `{1}` in section [{2}]"

tests/project/test_config.py

@@ -23,7 +23,11 @@ import pytest
 
 from platformio import fs
 from platformio.project.config import ProjectConfig
-from platformio.project.exception import InvalidProjectConfError, UnknownEnvNamesError
+from platformio.project.exception import (
+    InvalidEnvNameError,
+    InvalidProjectConfError,
+    UnknownEnvNamesError,
+)
 
 BASE_CONFIG = """
 [platformio]
@@ -662,9 +666,21 @@ upload_tool = two
 [c]
 upload_tool = three
 
-[env:native]
+[env:na_ti-ve13]
 extends = a, b, c
     """
     )
     config = ProjectConfig(str(project_conf))
-    assert config.get("env:native", "upload_tool") == "three"
+    assert config.get("env:na_ti-ve13", "upload_tool") == "three"
+
+
+def test_invalid_env_names(tmp_path: Path):
+    project_conf = tmp_path / "platformio.ini"
+    project_conf.write_text(
+        """
+[env:app:1]
+    """
+    )
+    config = ProjectConfig(str(project_conf))
+    with pytest.raises(InvalidEnvNameError, match=r".*Invalid environment name 'app:1"):
+        config.validate()