Core Rule Set: the package registries' searches of gitea and Forgejo pass (closes #354)

Recorded from gitea 1.27.3 and Forgejo 17.0.1 with each registry's own
client, and curl for the Chef cookbook list and NuGet's Packages(), with
python3, powershell, ls -la, .htaccess, file names and plain words. q on
the Cargo, Chef, Composer and Conan searches and NuGet's search service
joins 900603. 900605 lets /bin/sh through on Composer and Conan. New:
900609 for npm's text, 900611 lets a Conan pattern such as zlib/* skip
942100, and 900612 for NuGet's Search() and Packages(): searchTerm,
$filter, and the names $filter, $orderby and $top for 942290.

Model: opus-5-5

internal/coreruleset/gitea.conf

@@ -172,11 +172,13 @@ SecRule REQUEST_FILENAME "@rx ^/(?:explore/repos|user/search_candidates|\
 
 # A branch, tag or package name can hold a slash, as feat/docker-support and
 # npm's @scope/name do. So q on a repository's branches, tags and packages
-# pages, on an owner's packages page, on the admin page of packages and on the
-# API's search of packages also skips this rule:
+# pages, on an owner's packages page, on the admin page of packages, on the
+# API's search of packages and on the Composer and Conan registries' searches
+# also skips this rule:
 #   932160: /bin/sh
 SecRule REQUEST_FILENAME "@rx ^/(?:[^/]+/[^/]+/(?:branches|tags|packages)|\
-    admin/packages|api/v1/packages/[^/]+)$" \
+    admin/packages|api/v1/packages/[^/]+|\
+    api/packages/[^/]+/(?:composer/search\.json|conan/v[12]/conans/search))$" \
     "id:900605,phase:1,pass,nolog,ctl:ruleRemoveTargetById=932160;ARGS:q"
 
 # gitea's other searches send a name or a few words in q too, which skips only
@@ -191,6 +193,8 @@ SecRule REQUEST_FILENAME "@rx ^/(?:[^/]+/[^/]+/(?:branches|tags|packages)|\
 #   - the lists of users and organisations;
 #   - the API's searches of users, of topics, of an organisation's teams and of
 #     emails;
+#   - the searches of the Cargo, Chef, Composer and Conan registries, and the
+#     NuGet registry's search service;
 #   - the list of repositories a user watches;
 #   - an organisation's milestones of one team, and its search for teams;
 #   - the milestones of a repository or an organisation, and the projects of a
@@ -210,6 +214,8 @@ SecRule REQUEST_FILENAME "@rx ^/(?:repo/search|notifications/watching|\
     explore/(?:users|organizations)|\
     api/v1/(?:users/search|topics/search|orgs/[^/]+/teams/search|\
     admin/emails/search)|\
+    api/packages/[^/]+/(?:cargo/api/v1/crates|chef/api/v1/(?:search|cookbooks)|\
+    composer/search\.json|conan/v[12]/conans/search|nuget/query)|\
     org/[^/]+/(?:milestones/[^/]+|teams/-/search)|\
     [^/]+/-/packages/[^/]+/.+/versions|\
     [^/]+/[^/]+/(?:(?:issues|pulls)/posters|issues/suggestions|milestones|\
@@ -246,6 +252,56 @@ SecRule REQUEST_FILENAME "@rx ^/api/v1/repos/[^/]+/[^/]+/milestones$" \
     ctl:ruleRemoveTargetById=932250;ARGS:name,\
     ctl:ruleRemoveTargetById=932260;ARGS:name"
 
+# The npm registry's search sends its words in text, which skips these rules
+# there:
+#   930120: .htaccess
+#   932120: powershell
+#   932160: /bin/sh, as an npm name such as @alice/tools-cli holds a slash
+#   932250: ls -la
+#   932260: python3
+SecRule REQUEST_FILENAME "@rx ^/api/packages/[^/]+/npm/-/v1/search$" \
+    "id:900609,phase:1,pass,nolog,\
+    ctl:ruleRemoveTargetById=930120;ARGS:text,\
+    ctl:ruleRemoveTargetById=932120;ARGS:text,\
+    ctl:ruleRemoveTargetById=932160;ARGS:text,\
+    ctl:ruleRemoveTargetById=932250;ARGS:text,\
+    ctl:ruleRemoveTargetById=932260;ARGS:text"
+
+# A Conan search takes a pattern such as zlib/*, which the rule for SQL
+# injection (942100) refused in q. q skips that rule when the query string has
+# one q, made only of the characters of a Conan name and *: letters, digits,
+# _, ., +, -, /, @ and *. Such a q holds no quote, space or bracket, so SQL
+# injection such as 1' OR '1'='1 stays refused.
+SecRule REQUEST_FILENAME "@rx ^/api/packages/[^/]+/conan/v[12]/conans/search$" \
+    "id:900611,phase:1,pass,nolog,chain"
+    SecRule &ARGS_GET:q "@eq 1" "chain"
+        SecRule ARGS_GET:q "@rx ^[\w.+*/@-]+$" \
+            "ctl:ruleRemoveTargetById=942100;ARGS:q"
+
+# The NuGet registry's older searches, Search() and Packages(), send their words
+# in searchTerm, or in $filter as an expression such as
+# tolower(Id) eq 'python3'. searchTerm skips these rules:
+#   930120: .htaccess
+#   932120: powershell
+#   932250: ls -la
+#   932260: python3
+# $filter skips these:
+#   930120: .htaccess
+#   932120: powershell
+# The names $filter, $orderby and $top skip the rule for MongoDB operators
+# (942290), which refused every such search.
+SecRule REQUEST_FILENAME "@rx ^/api/packages/[^/]+/nuget/(?:Search|Packages)\(\)$" \
+    "id:900612,phase:1,pass,nolog,\
+    ctl:ruleRemoveTargetById=930120;ARGS:searchTerm,\
+    ctl:ruleRemoveTargetById=932120;ARGS:searchTerm,\
+    ctl:ruleRemoveTargetById=932250;ARGS:searchTerm,\
+    ctl:ruleRemoveTargetById=932260;ARGS:searchTerm,\
+    ctl:ruleRemoveTargetById=930120;ARGS:$filter,\
+    ctl:ruleRemoveTargetById=932120;ARGS:$filter,\
+    ctl:ruleRemoveTargetById=942290;ARGS_NAMES:$filter,\
+    ctl:ruleRemoveTargetById=942290;ARGS_NAMES:$orderby,\
+    ctl:ruleRemoveTargetById=942290;ARGS_NAMES:$top"
+
 # The repositories on a user's or an organisation's page are searched with q
 # too. Their path has one segment, so q skips these rules on every path of one
 # segment, other apps' pages such as /index.php included: