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libs/regxes.py

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+# Regular expressions of email address, IP address, network.
+
+import re
+
+# Email address.
+#
+#   - `+`, `=` are used in SRS rewritten addresses.
+#   - `/` is sub-folder. e.g. 'john+lists/abc/def@domain.com' will create
+#     directory `lists` and its sub-folders `lists/abc/`, `lists/abc/def`.
+email = r"""[\w\-\#][\w\-\.\+\=\/\&\#]*@[\w\-][\w\-\.]*\.[a-zA-Z0-9\-]{2,25}"""
+cmp_email = re.compile(r"^" + email + r"$", re.IGNORECASE | re.DOTALL | re.ASCII)
+
+# Email address allowed by locally created mail user.
+#
+# `auth_email` allows less characters than `email`.
+# Disallowed chars: `+`, `=`, `/`.
+auth_email = r"""[\w\-\#][\w\-\=\.\&\#]*@[\w\-][\w\-\.]*\.[a-zA-Z0-9\-]{2,25}"""
+cmp_auth_email = re.compile(r"^" + auth_email + r"$", re.IGNORECASE | re.DOTALL | re.ASCII)
+
+# Wildcard sender address: 'user@*'
+wildcard_addr = r"""[\w\-][\w\-\.\+\=]*@\*"""
+cmp_wildcard_addr = re.compile(r"^" + wildcard_addr + r"$", re.IGNORECASE | re.DOTALL | re.ASCII)
+
+#
+# Domain name
+#
+# Single domain name.
+domain = r"""[\w\-][\w\-\.]*\.[a-z0-9\-]{2,25}"""
+cmp_domain = re.compile(r"^" + domain + r"$", re.IGNORECASE | re.DOTALL | re.ASCII)
+
+# Top level domain. e.g. .com, .biz, .org.
+top_level_domain = r"""[a-z0-9\-]{2,25}"""
+cmp_top_level_domain = re.compile(r"^" + top_level_domain + r"$", re.IGNORECASE | re.DOTALL | re.ASCII)
+
+# Valid first char of domain name, email address.
+valid_account_first_char = r"""^[0-9a-zA-Z]{1,1}$"""
+cmp_valid_account_first_char = re.compile(r"^" + valid_account_first_char + r"$", re.IGNORECASE)
+
+# WARNING: This is used for simple URL matching, not used to verify IP address.
+ip = r"[0-9a-zA-Z\.\:]+"
+
+# Wildcard IPv4: 192.168.0.*
+wildcard_ipv4 = r"(?:[\d\*]{1,3})\.(?:[\d\*]{1,3})\.(?:[\d\*]{1,3})\.(?:[\d\*]{1,3})$"
+cmp_wildcard_ipv4 = re.compile(wildcard_ipv4, re.IGNORECASE | re.DOTALL)
+
+# Mailing list id, a server-wide unique 36-char string.
+mailing_list_id = r"[a-zA-Z0-9\-]{36}"
+cmp_mailing_list_id = re.compile(r"^" + mailing_list_id + r"$")
+
+# Mailing list subscription confirm token. a 32-char string.
+mailing_list_confirm_token = r"[a-zA-Z0-9]{32}"
+cmp_mailing_list_confirm_token = re.compile(r"^" + mailing_list_confirm_token + r"$")
+
+#
+# Mailbox
+#
+# Set mailbox folder name. Could be either empty or up to 20 characters.
+mailbox_folder = r"""[a-zA-Z0-9]{0,20}"""
+cmp_mailbox_folder = re.compile(r"^" + mailbox_folder + r"$")