98 lines
3 KiB
GDScript3
98 lines
3 KiB
GDScript3
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class_name NetworkMailProtocol
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extends RefCounted
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const CAPABILITY: StringName = &"mail_v1"
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const RELIABLE_CHANNEL: int = NetworkProtocol.MAIL_RELIABLE_CHANNEL
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const MAX_ID_LENGTH: int = 96
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const MAX_BODY_CHARACTERS: int = 2000
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const MAX_BODY_BYTES: int = 8000
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const MAX_RECIPIENT_LETTERS: int = 100
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const MAX_SESSION_LETTERS: int = 200
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const GREETINGS: PackedStringArray = ["dear", "to", "hey", "greetings"]
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const SALUTATIONS: PackedStringArray = [
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"love", "from", "cheers", "salutations", "good_luck_have_fun",
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]
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enum State {
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SENT_UNREAD,
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READ,
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ACCEPTANCE_PENDING,
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ACCEPTED,
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DECLINED,
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ATTACHMENT_RECALLED,
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CANCELLED,
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SESSION_ENDED,
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}
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static func sanitize_body(value: Variant) -> String:
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if typeof(value) != TYPE_STRING:
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return ""
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var body := str(value).strip_edges(false, true)
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if (
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body.strip_edges().is_empty()
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or body.length() > MAX_BODY_CHARACTERS
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or body.to_utf8_buffer().size() > MAX_BODY_BYTES
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):
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return ""
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for index: int in body.length():
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var codepoint := body.unicode_at(index)
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if codepoint < 32 and codepoint not in [9, 10, 13]:
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return ""
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if codepoint == 127:
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return ""
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return body.replace("\r\n", "\n").replace("\r", "\n").replace("\t", " ")
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static func valid_id(value: Variant) -> bool:
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return (
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typeof(value) == TYPE_STRING
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and not str(value).is_empty()
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and str(value).length() <= MAX_ID_LENGTH
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)
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static func validate_send_request(data: Variant) -> bool:
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if typeof(data) != TYPE_DICTIONARY:
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return false
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var value: Dictionary = data
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return (
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valid_id(value.get("request_id"))
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and valid_id(value.get("session_id"))
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and typeof(value.get("recipient_peer_id")) == TYPE_INT
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and int(value["recipient_peer_id"]) > 0
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and typeof(value.get("greeting_id")) == TYPE_STRING
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and str(value["greeting_id"]) in GREETINGS
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and not sanitize_body(value.get("body")).is_empty()
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and typeof(value.get("salutation_id")) == TYPE_STRING
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and str(value["salutation_id"]) in SALUTATIONS
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and typeof(value.get("reservation_id")) == TYPE_STRING
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and str(value["reservation_id"]).length() <= MAX_ID_LENGTH
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and typeof(value.get("attachment")) == TYPE_DICTIONARY
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and Dictionary(value["attachment"]).size() <= 3
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)
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static func validate_mail(data: Variant) -> bool:
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if typeof(data) != TYPE_DICTIONARY:
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return false
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var value: Dictionary = data
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return (
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valid_id(value.get("mail_id"))
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and valid_id(value.get("session_id"))
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and typeof(value.get("sequence")) == TYPE_INT
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and typeof(value.get("sender_peer_id")) == TYPE_INT
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and typeof(value.get("recipient_peer_id")) == TYPE_INT
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and typeof(value.get("sender_display_name")) == TYPE_STRING
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and str(value["sender_display_name"]).length() <= 24
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and str(value.get("greeting_id", "")) in GREETINGS
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and not sanitize_body(value.get("body")).is_empty()
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and str(value.get("salutation_id", "")) in SALUTATIONS
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and typeof(value.get("attachment")) == TYPE_DICTIONARY
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and Dictionary(value["attachment"]).size() <= 3
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and typeof(value.get("state")) == TYPE_INT
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and int(value["state"]) >= 0
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and int(value["state"]) < State.size()
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)
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