CAP-1-1 {itu-t recommendation x cap(1303)} 
DEFINITIONS XER INSTRUCTIONS AUTOMATIC TAGS ::=
-- CAP Alert Message (version 1.1)
BEGIN

Alert ::= SEQUENCE { 
   identifier IdentifierString,
	    -- Unambiguous identification of the message 
        -- from all messages from
	    -- this sender, in a format defined by the sender and 
        -- identified in the "sender" field below.
   sender     String,
	    -- The globally unambiguous identification of the sender.
	    -- This specification does not define the root of 
        -- a global identification tree (there is no international 
        -- agreement on such a root), so it relies
	    -- on human-readable text to define globally and 
        -- unambiguously the sender.
	    -- An internet domain name or use of "iri:/ITU-T/..." 
        -- are possible, but
	    -- the choice needs to be clearly stated in human-readable form.
   sent       DateTime,
   status     AlertStatus,
   msgType    AlertMessageType,
   source     String OPTIONAL,
	    -- Not standardised human-readable identification 
        -- of the source of the alert.
   scope      AlertScope,
   restriction String OPTIONAL,
	    -- Not standardised human-readable restrictions 
        -- on the distribution of the alert message
   addresses   String OPTIONAL,
	    -- A space separated list of addressees for private messages
	    -- (see 3.2.1)
   code-list   SEQUENCE SIZE((0..MAX)) OF code String,
	    -- A sequence codes for special handling
        -- (see 3.2.1)
	    -- The format and semantics of the codes are not defined in this
	    -- specification.
   note        String OPTIONAL,
	    -- Not standardised human-readable clarifying text for the alert
	    -- (see 3.2.1)
   references  String OPTIONAL,
	    -- Space-separated references to earlier messages
        -- (see 3.2.1)
   incidents   String OPTIONAL,
	    -- Space-separated references to related incidents
        -- (see 3.2.1)
   info-list   SEQUENCE SIZE((0..MAX)) OF info AlertInformation  }

AlertStatus ::= ENUMERATED {
        actual,
        draft,
        exercise,
        system,
        test }

AlertMessageType ::= ENUMERATED {
        ack,
        alert,
        cancel,
        error,
        update }

AlertScope ::= ENUMERATED {
        private,
        public,
        restricted }

AlertInformation ::= SEQUENCE {
   language          Language -- DEFAULT "en-US" -- ,
	    -- The language used in this value of the Info type
        -- (see 3.2.2)
   category-list     SEQUENCE (SIZE(1..MAX)) OF 
                     category InformationCategory,
   event             String,
	    -- Not standardised human-readable text describing the 
        -- type of the event (see 3.2.2)
   responseType-list SEQUENCE SIZE((0..MAX)) OF
                     responseType InformationResponseType,
   urgency           HowUrgent,
   severity          HowSevere,
   certainty         HowCertain,
   audience          String OPTIONAL,
	    -- Not standardised human-readable text describing the 
        -- intended audience for the message (see 3.2.2)
   eventCode-list    SEQUENCE SIZE((0..MAX)) OF eventCode SEQUENCE {
        	valueName ValueName,
        	value     Value },
   effective         DateTime OPTIONAL,
   onset             DateTime OPTIONAL,
   expires           DateTime OPTIONAL,
   senderName        String OPTIONAL,
	    -- Not standardised human-readable name of the authority 
        -- issuing the message (see 3.2.2)
   headline          String (SIZE (1..160,...)) OPTIONAL,
	    -- Not standardised human-readable short statement (headline) 
        -- of the alert (see 3.2.2)
   description       String OPTIONAL,
	    -- Not standardised human-readable extended description of 
        -- the event (see 3.2.2)
   instruction       String OPTIONAL,
	    -- Not standardised human-readable recommended action
        -- (see 3.2.2)
   web               AnyURI OPTIONAL,
   contact           String OPTIONAL,
	    -- Not standardised human-readable contact details for 
        -- follow-up (see 3.2.2)
   parameter-list    SEQUENCE SIZE((0..MAX)) OF parameter SEQUENCE {
	    -- System-specific parameters (see 3.2.2)
	    valueName ValueName,
	    value     Value },
   resource-list     SEQUENCE SIZE((0..MAX)) OF resource ResourceFile,
   area-list         SEQUENCE SIZE((0..MAX)) OF Area }

InformationCategory ::=  ENUMERATED {
        cBRNE,
        env,
        fire,
        geo,
        health,
        infra,
        met,
        other,
        rescue,
        safety,
        security,
        transport }

InformationResponseType ::= ENUMERATED {
        assess,
        evacuate,
        execute,
        monitor,
        none,
        prepare,
        shelter }

HowUrgent ::= ENUMERATED {
        expected,
        future,
        immediate,
        past,
        unknown }

HowSevere ::= ENUMERATED {
        extreme,
        minor,
        moderate,
        severe,
        unknown }

HowCertain ::= ENUMERATED {
        likely,
        observed,
        possible,
        unknown,
        unlikely }

ResourceFile ::= SEQUENCE {
	    -- Information about an associated resource file
        -- (see 3.2.3)
   resourceDesc String,
	    -- Not standardised human-readable description of the type 
        -- and content of
	    -- an associated resource file (for example a map or 
        -- photograph)(see 3.2.3)
   mimeType     String OPTIONAL,
   size         INTEGER OPTIONAL, -- In bytes
   uri          AnyURI OPTIONAL, 
   derefUri     String OPTIONAL,
	    -- An alternative to the URI giving the Base64-encoded 
        -- content of the resource file (see 3.2.3)
   digest       String OPTIONAL
	    -- SHA-1 hash of the resource file for error detection
        -- (see 3.2.3) -- }

Area ::= SEQUENCE {
	    -- Identification of an affected area
   areaDesc     String,
	    -- Not standardised human-readable description of the area
   polygon-list SEQUENCE OF polygon String,
	    -- Each element is a space-separated list of coordinate pairs
	    -- The complete list starts and ends with the same point and
	    -- defines the polygon that defines the area 
        -- (see 3.2.4).
   circle-list  SEQUENCE OF circle String,
	    -- A space-separated list of coordinates for a point and a radius
   geocode-list SEQUENCE SIZE((0..MAX)) OF geocode SEQUENCE {
	    -- A geographic code designating the alert target area
        -- (see 3.2.4)
	 	   valueName ValueName,
		   value     Value },
   altitude     String OPTIONAL,
	    -- Specific or minimum altitude of the affected area
   ceiling      String OPTIONAL
	    -- Maximum altitude of the affected area -- }

ValueName ::=  String  -- A not standardised name for 
        -- an information event code, a parameter or a geocode

Value ::=  String  -- The value of the information event code,
                   -- parameter or geocode

String ::=  UTF8String (FROM (
           {0,0,0,9} -- TAB 
         | {0,0,0,10} -- CR
         | {0,0,0,13} -- LF 
         | {0,0,0,32}..{0,0,215,255} -- Space to the start of the S-zone
         | {0,0,224,0}..{0,0,255,253} -- Rest of BMP after S-zone
         | {0,1,0,0}..{0,16,255,253}  -- Other planes -- ) )

StringChar ::= String (SIZE(1))

SpaceAndComma ::= UTF8String (FROM (
   	   {0,0,0,32} -- SPACE
          | {0,0,0,44} -- COMMA -- ) )

IdentifierString ::= String (FROM (StringChar EXCEPT SpaceAndComma))

Language ::= VisibleString(FROM ("a".."z" | "A".."Z" | "-" | "0".."9")) 
               (PATTERN "[a-zA-Z]#(1,8)(-[a-zA-Z0-9]#(1,8))*")
        -- The semantics of Language is specified in IETF RFC 3066

DateTime ::= TIME (SETTINGS "Basic=Date-Time Date=YMD 
          Year=Basic Time=HMS Local-or-UTC=LD")
	    -- This is the ISO 8601 format using local time and a 
        -- time difference

StringWithNoCRLFHT ::= UTF8String (FROM (
         {0,0,0,32}..{0,0,215,255}
         | {0,0,224,0}..{0,0,255,253}
         | {0,1,0,0}..{0,16,255,255}))

AnyURI ::= StringWithNoCRLFHT (CONSTRAINED BY {
          /* Shall be a valid URI as defined in IETF RFC 2396 */})

ENCODING-CONTROL XER
    GLOBAL-DEFAULTS MODIFIED-ENCODINGS
    GLOBAL-DEFAULTS CONTROL-NAMESPACE
        "http://www.w3.org/2001/XMLSchema-instance" PREFIX "xsi"
    NAMESPACE ALL, ALL IN ALL AS "urn:oasis:names:tc:emergency:cap:1.1"
              PREFIX "cap"
    NAME Alert, Area AS UNCAPITALIZED
    UNTAGGED SEQUENCE OF
    DEFAULT-FOR-EMPTY AlertInformation.language AS "en-US"
    TEXT AlertStatus:ALL, 
         AlertMessageType:ALL, 
         AlertScope:ALL, 
         InformationCategory:ALL, 
         InformationResponseType:ALL, 
         HowUrgent:ALL,
         HowSevere:ALL, 
         HowCertain:ALL AS CAPITALIZED
    WHITESPACE Language, AnyURI COLLAPSE
END