The Annoyance Filter.pdf - Fourmilab

90 FLASH STREAM DECODER ANNOYANCE-FILTER §111
111. Executable actions are encoded in a Flash script as a stagDoAction tag, which contains a
sequence of action codes, terminated by a zero (sactionNone ) action. Action codes in the range # 00–
#
7F are single byte codes with no arguments. Action codes from # 80 to # FF are followed by a 16 bit
field specifying the number of argument bytes which follow. Unknown actions, like tags, may hence be
skipped.
〈 Flash file action codes 111 〉 ≡
typedef enum {
sactionNone = # 00,
sactionNextFrame = # 04,
sactionPrevFrame = # 05,
sactionPlay = # 06,
sactionStop = # 07,
sactionToggleQuality = # 08,
sactionStopSounds = # 09,
sactionAdd = # 0A,
sactionSubtract = # 0B,
sactionMultiply = # 0C,
sactionDivide = # 0D,
sactionEqual = # 0E,
sactionLessThan = # 0F,
sactionLogicalAnd = # 10,
sactionLogicalOr = # 11,
sactionLogicalNot = # 12,
sactionStringEqual = # 13,
sactionStringLength = # 14,
sactionSubString = # 15,
sactionInt = # 18,
sactionEval = # 1C,
sactionSetVariable = # 1D,
sactionSetTargetExpression = # 20,
sactionStringConcat = # 21,
sactionGetProperty = # 22,
sactionSetProperty = # 23,
sactionDuplicateClip = # 24,
sactionRemoveClip = # 25,
sactionTrace = # 26,
sactionStartDragMovie = # 27,
sactionStopDragMovie = # 28,
sactionStringLessThan = # 29,
sactionRandom = # 30,
sactionMBLength = # 31,
sactionOrd = # 32,
sactionChr = # 33,
sactionGetTimer = # 34,
sactionMBSubString = # 35,
sactionMBOrd = # 36,
sactionMBChr = # 37,
sactionHasLength = # 80,
sactionGotoFrame = # 81, /∗ frame num (WORD) ∗/
sactionGetURL = # 83, /∗ url (STR), window (STR) ∗/
sactionWaitForFrame = # 8A, /∗ frame needed (WORD), ∗/
/∗ actions to skip (BYTE) ∗/