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CHG: all @marshmellow42 's changes to make the reveng work.

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ADD: lua script test for using the reveng inside lua.  *prove of concept*
      it implements -h help
                    -d  data in a hexstring
                    -w  width of the crc family. (ie 16 gives all CRC-16 calculations.
     it iterates thru all found crc presets in a crc family based on the width of crc.  It calcs crc and the reverse crc.
This commit is contained in:
iceman1001 2015-06-09 13:31:53 +02:00
commit 60e8657796
6 changed files with 476 additions and 9 deletions
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29
client/reveng/cli.c
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@ -183,8 +183,10 @@ int reveng_main(int argc, char *argv[]) {
return 0;
//exit(EXIT_FAILURE);
}
if(c < 0)
if(c < 0){
uerror("no preset models available");
return 0;
}
/* must set width so that parameter to -ipx is not zeroed */
width = plen(model.spoly);
rflags |= R_HAVEP | R_HAVEI | R_HAVERI | R_HAVERO | R_HAVEX;
@ -314,8 +316,10 @@ ippx:
break;
case 'D': /* D dump all models */
args = mcount();
if(!args)
if(!args){
uerror("no preset models available");
return 0;
}
for(mode = 0; mode < args; ++mode) {
mbynum(&model, mode);
mcanon(&model);
@ -327,8 +331,10 @@ ippx:
* either attaching names to arbitrary models or forcing to a preset
* mmatch(&model, M_OVERWR);
*/
if(~model.flags & P_MULXN)
if(~model.flags & P_MULXN){
uerror("not a Williams model compliant algorithm");
return 0;
}
string = mtostr(&model);
puts(string);
free(string);
@ -348,10 +354,14 @@ ippx:
}
break;
case 's': /* s search for algorithm */
if(!width)
if(!width){
uerror("must specify positive -k or -w before -s");
if(~model.flags & P_MULXN)
return 0;
}
if(~model.flags & P_MULXN){
uerror("cannot search for non-Williams compliant models");
return 0;
}
praloc(&model.spoly, width);
praloc(&model.init, width);
praloc(&model.xorout, width);
@ -366,8 +376,10 @@ ippx:
/* allocate argument array */
args = argc - optind;
if(!(apolys = malloc(args * sizeof(poly_t))))
if(!(apolys = malloc(args * sizeof(poly_t)))){
uerror("cannot allocate memory for argument list");
return 0;
}
for(pptr = apolys; optind < argc; ++optind) {
if(uflags & C_INFILE)
@ -435,8 +447,10 @@ ippx:
return 1;
//exit(EXIT_SUCCESS);
}
if(!(model.flags & P_REFIN) != !(model.flags & P_REFOUT))
if(!(model.flags & P_REFIN) != !(model.flags & P_REFOUT)){
uerror("cannot search for crossed-endian models");
return 0;
}
pass = 0;
do {
mptr = candmods = reveng(&model, qpoly, rflags, args, apolys);
@ -465,7 +479,6 @@ ippx:
break;
default: /* no mode specified */
fprintf(stderr, "%s: no mode switch specified. Use %s -h for help.\n", myname, myname);
return 0;
//exit(EXIT_FAILURE);
}