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[tor-commits] [tor/master] check-changes: Warn about bugfixes on future releases



commit 3eafa61f6324c91b4bb8c02a6e54db0f12ef42c2
Author: teor <teor@xxxxxxxxxxxxxx>
Date:   Tue Sep 18 20:39:03 2018 +1000

    check-changes: Warn about bugfixes on future releases
    
    Warn when bugfix changes files say that the bug is in a future release.
    
    Closes ticket 27761.
---
 Makefile.am                  |  2 +-
 changes/ticket27761          |  3 ++-
 scripts/maint/lintChanges.py | 50 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 53 insertions(+), 2 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 36a5dd2e9..9a65e083a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -408,7 +408,7 @@ endif
 check-changes:
 if USEPYTHON
 	@if test -d "$(top_srcdir)/changes"; then \
-		$(PYTHON) $(top_srcdir)/scripts/maint/lintChanges.py $(top_srcdir)/changes; \
+		PACKAGE_VERSION=$(PACKAGE_VERSION) $(PYTHON) $(top_srcdir)/scripts/maint/lintChanges.py $(top_srcdir)/changes; \
 		fi
 endif
 
diff --git a/changes/ticket27761 b/changes/ticket27761
index ef4686bdc..35106ee9c 100644
--- a/changes/ticket27761
+++ b/changes/ticket27761
@@ -1,3 +1,4 @@
   o Minor features (changelogs):
     - Check that bugfix versions in changes files look like Tor versions
-      from the versions spec. Closes ticket 27761.
+      from the versions spec. Warn when bugfixes claim to be on a future
+      release. Closes ticket 27761.
diff --git a/scripts/maint/lintChanges.py b/scripts/maint/lintChanges.py
index 5c5d45da1..39fa08bb4 100755
--- a/scripts/maint/lintChanges.py
+++ b/scripts/maint/lintChanges.py
@@ -35,6 +35,36 @@ NEEDS_SUBCATEGORIES = set([
     "Major features",
     ])
 
+def split_tor_version(version):
+    '''
+    Return the initial numeric components of the Tor version as a list of ints.
+    For versions earlier than 0.1.0, returns MAJOR, MINOR, and MICRO.
+    For versions 0.1.0 and later, returns MAJOR, MINOR, MICRO, and PATCHLEVEL if present.
+
+    If the version is malformed, returns None.
+    '''
+    version_match = re.search('([0-9]+)\.([0-9]+)\.([0-9]+)(\.([0-9]+))?', version)
+    if version_match is None:
+        return None
+
+    version_groups = version_match.groups()
+    if version_groups is None:
+        return None
+    if len(version_groups) < 3:
+        return None
+
+    if len(version_groups) != 5:
+        return None
+    version_components = version_groups[0:3]
+    version_components += version_groups[4:5]
+
+    try:
+        version_list = [int(v) for v in version_components if v is not None]
+    except ValueError:
+        return None
+
+    return version_list
+
 def lintfile(fname):
     have_warned = []
 
@@ -93,6 +123,26 @@ def lintfile(fname):
                 warn("Versions must have at least 3 digits. ('0.1.2', '0.3.4.8', or '0.3.5.1-alpha'.)")
             elif bugfix_match.group(0) is None:
                 warn("Versions must have at least 3 digits. ('0.1.2', '0.3.4.8', or '0.3.5.1-alpha'.)")
+            else:
+                bugfix_match = re.search('bugfix on ([0-9a-z][-.0-9a-z]+[0-9a-z])', contents)
+                bugfix_group = bugfix_match.groups(0) if bugfix_match is not None else None
+                bugfix_version = bugfix_group[0] if bugfix_group is not None else None
+                package_version = os.environ.get('PACKAGE_VERSION', None)
+                if bugfix_version is None:
+                    # This should be unreachable, unless the patterns are out of sync
+                    warn("Malformed bugfix version.")
+                elif package_version is not None:
+                    # If $PACKAGE_VERSION isn't set, skip this check
+                    bugfix_split = split_tor_version(bugfix_version)
+                    package_split = split_tor_version(package_version)
+                    if bugfix_split is None:
+                        # This should be unreachable, unless the patterns are out of sync
+                        warn("Malformed bugfix version: '{}'.".format(bugfix_version))
+                    elif package_split is None:
+                        # This should be unreachable, unless the patterns are out of sync, or the package versioning scheme has changed
+                        warn("Malformed $PACKAGE_VERSION: '{}'.".format(package_version))
+                    elif bugfix_split > package_split:
+                        warn("Bugfixes must be made on earlier versions (or this version). (Bugfix on version: '{}', current tor package version: '{}'.)".format(bugfix_version, package_version))
 
     return have_warned != []
 



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