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Detect and reject messages with invalid i3 and or n3.

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This commit is contained in:
Steve Franke 2018-07-28 08:50:50 -05:00
parent d9838cf616
commit bee1ecd109
1 changed files with 6 additions and 4 deletions
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10
lib/ft8/ft8b_2.f90
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@ -317,15 +317,17 @@ subroutine ft8b_2(dd0,newdat,nQSOProgress,nfqso,nftx,ndepth,lapon,lapcqonly, &
xsnr=-99.0 xsnr=-99.0
if(nharderrors.lt.0 .or. nharderrors.gt.36) cycle if(nharderrors.lt.0 .or. nharderrors.gt.36) cycle
if(count(cw.eq.0).eq.174) cycle !Reject the all-zero codeword if(count(cw.eq.0).eq.174) cycle !Reject the all-zero codeword
nbadcrc=0 ! If we get this far, must be a valid codeword.
write(c77,'(77i1)') message77 write(c77,'(77i1)') message77
read(c77(72:74),'(b3)') n3 read(c77(72:74),'(b3)') n3
read(c77(75:77),'(b3)') i3 read(c77(75:77),'(b3)') i3
call unpack77(c77,msg37) if(i3.gt.4 .or. (i3.eq.0.and.n3.gt.5)) then
if(index(msg37,'QU1RK').gt.0) then
nbadcrc=1
cycle cycle
endif endif
call unpack77(c77,msg37)
if(index(msg37,'QU1RK').gt.0) then
cycle
endif
nbadcrc=0 ! If we get this far: valid codeword, valid (i3,n3), nonquirky message.
call genft8_174_91(msg37,i3,n3,msgsent37,msgbits,itone) call genft8_174_91(msg37,i3,n3,msgsent37,msgbits,itone)
if(lsubtract) call subtractft8(dd0,itone,f1,xdt) if(lsubtract) call subtractft8(dd0,itone,f1,xdt)
xsig=0.0 xsig=0.0