textual suger

[proxmark3-svn] / client / cmdcrc.c

diff --git a/client/cmdcrc.c b/client/cmdcrc.c
index 666b4a8e67d42c2de61377ea978be72b4d8076b3..4c1c74f54860747058f71fa6678c1c14da1fc32a 100644 (file)
--- a/client/cmdcrc.c
+++ b/client/cmdcrc.c
@@ -19,8 +19,6 @@
 
 #include <stdio.h>
 #include <string.h>
 
 #include <stdio.h>
 #include <string.h>

-//#include <stdlib.h>
-//#include <ctype.h>

 #include "cmdmain.h"
 #include "cmdcrc.h"
 #include "reveng/reveng.h"
 #include "cmdmain.h"
 #include "cmdcrc.h"
 #include "reveng/reveng.h"


@@ -74,10 +72,10 @@ int CmdCrc(const char *Cmd)
        if (argc == 3 && memcmp(argv[1],"-g",2)==0) {
                CmdrevengSearch(argv[2]);
        } else {
        if (argc == 3 && memcmp(argv[1],"-g",2)==0) {
                CmdrevengSearch(argv[2]);
        } else {

-       reveng_main(argc, argv);
+               reveng_main(argc, argv);

        }
        //PrintAndLog("DEBUG argc: %d, %s %s Cmd: %s",argc, argv[0], Cmd2, Cmd);
        }
        //PrintAndLog("DEBUG argc: %d, %s %s Cmd: %s",argc, argv[0], Cmd2, Cmd);

-       for(int i = 0; i < argc; ++i){
+       for(int i = 0; i < argc; ++i) {

                free(argv[i]);
        }
 
                free(argv[i]);
        }
 


@@ -131,121 +129,122 @@ int GetModels(char *Models[], int *count, uint8_t *width){
                mfree(&model);
        } else { //reveng -s
 
                mfree(&model);
        } else { //reveng -s
 

-                       if(~model.flags & P_MULXN)
-                               return uerr("cannot search for non-Williams compliant models");
+               if(~model.flags & P_MULXN)
+                       return uerr("cannot search for non-Williams compliant models");

 
                praloc(&model.spoly, (unsigned long)width[0]);
                praloc(&model.init, (unsigned long)width[0]);
                praloc(&model.xorout, (unsigned long)width[0]);
 
                praloc(&model.spoly, (unsigned long)width[0]);
                praloc(&model.init, (unsigned long)width[0]);
                praloc(&model.xorout, (unsigned long)width[0]);

-                       if(!plen(model.spoly))
+
+               if(!plen(model.spoly))

                        palloc(&model.spoly, (unsigned long)width[0]);
                        palloc(&model.spoly, (unsigned long)width[0]);

-                       else
+               else

                        width[0] = (uint8_t)plen(model.spoly);
 
                        width[0] = (uint8_t)plen(model.spoly);
 

-                       /* special case if qpoly is zero, search to end of range */
-                       if(!ptst(qpoly))
-                               rflags &= ~R_HAVEQ;
-
-                       /* if endianness not specified, try
-                        * little-endian then big-endian.
-                        * NB: crossed-endian algorithms will not be
-                        * searched.
-                        */
-                       /* scan against preset models */
-                       if(~uflags & C_FORCE) {
-                               pass = 0;
-                               Cnt = 0;
-                               do {
-                                       psets = mcount();
-
-                                       while(psets) {
-                                               mbynum(&pset, --psets);
-                                               
-                                               /* skip if different width, or refin or refout don't match */
-                                       if(plen(pset.spoly) != width[0] || (model.flags ^ pset.flags) & (P_REFIN | P_REFOUT))
-                                                       continue;
-                                               /* skip if the preset doesn't match specified parameters */
-                                               if(rflags & R_HAVEP && pcmp(&model.spoly, &pset.spoly))
-                                                       continue;
-                                               if(rflags & R_HAVEI && psncmp(&model.init, &pset.init))
-                                                       continue;
-                                               if(rflags & R_HAVEX && psncmp(&model.xorout, &pset.xorout))
-                                                       continue;
-                               
-                                       //for additional args (not used yet, maybe future?)
-                                               apoly = pclone(pset.xorout);
-                                               if(pset.flags & P_REFOUT)
-                                                       prev(&apoly);
-                                       
-                                               for(qptr = apolys; qptr < pptr; ++qptr) {
-                                                       crc = pcrc(*qptr, pset.spoly, pset.init, apoly, 0);
-                                                       if(ptst(crc)) {
-                                                               pfree(&crc);
-                                                               break;
-                                                       } else
-                                                               pfree(&crc);
-                                               }
-                                               pfree(&apoly);
-                                               if(qptr == pptr) {
-
-                                                       /* the selected model solved all arguments */
-
-                                                       mcanon(&pset);
-                                                       
-                                                       size_t size = (pset.name && *pset.name) ? strlen(pset.name) : 6;
-                                                       //PrintAndLog("Size: %d, %s, count: %d",size,pset.name, Cnt);
-                                                       char *tmp = calloc(size+1, sizeof(char));
-                                                       if (tmp == NULL){
-                                                               PrintAndLog("out of memory?");
-                                                               return 0;
-                                                       }
-                                               width[Cnt] = width[0];
-                                                       memcpy(tmp, pset.name, size);
-                                                       Models[Cnt++] = tmp;
-                                                       *count = Cnt;
-                                                       uflags |= C_RESULT;
-                                               }
-                                       }
-                                       mfree(&pset);
+               /* special case if qpoly is zero, search to end of range */
+               if(!ptst(qpoly))
+                       rflags &= ~R_HAVEQ;

 
 

-                                       /* toggle refIn/refOut and reflect arguments */
-                                       if(~rflags & R_HAVERI) {
-                                               model.flags ^= P_REFIN | P_REFOUT;
-                                               for(qptr = apolys; qptr < pptr; ++qptr)
-                                                       prevch(qptr, ibperhx);
+               /* if endianness not specified, try
+                * little-endian then big-endian.
+                * NB: crossed-endian algorithms will not be
+                * searched.
+                */
+               /* scan against preset models */
+               if(~uflags & C_FORCE) {
+                       pass = 0;
+                       Cnt = 0;
+                       do {
+                               psets = mcount();
+
+                               while(psets) {
+                                       mbynum(&pset, --psets);
+                                       
+                                       /* skip if different width, or refin or refout don't match */
+                               if(plen(pset.spoly) != width[0] || (model.flags ^ pset.flags) & (P_REFIN | P_REFOUT))
+                                               continue;
+                                       /* skip if the preset doesn't match specified parameters */
+                                       if(rflags & R_HAVEP && pcmp(&model.spoly, &pset.spoly))
+                                               continue;
+                                       if(rflags & R_HAVEI && psncmp(&model.init, &pset.init))
+                                               continue;
+                                       if(rflags & R_HAVEX && psncmp(&model.xorout, &pset.xorout))
+                                               continue;
+                       
+                               //for additional args (not used yet, maybe future?)
+                                       apoly = pclone(pset.xorout);
+                                       if(pset.flags & P_REFOUT)
+                                               prev(&apoly);
+                               
+                                       for(qptr = apolys; qptr < pptr; ++qptr) {
+                                               crc = pcrc(*qptr, pset.spoly, pset.init, apoly, 0);
+                                               if(ptst(crc)) {
+                                                       pfree(&crc);
+                                                       break;
+                                               } else
+                                                       pfree(&crc);

                                        }
                                        }

-                               } while(~rflags & R_HAVERI && ++pass < 2);
-                       }
-               //got everything now free the memory...
+                                       pfree(&apoly);
+                                       if(qptr == pptr) {

 
 

-                       if(uflags & C_RESULT) {
-                               for(qptr = apolys; qptr < pptr; ++qptr)
-                                       pfree(qptr);
-                       }
-                       if(!(model.flags & P_REFIN) != !(model.flags & P_REFOUT))
-                               return uerr("cannot search for crossed-endian models");
+                                               /* the selected model solved all arguments */

 
 

-                       pass = 0;
-                       do {
-                               mptr = candmods = reveng(&model, qpoly, rflags, args, apolys);
-                               if(mptr && plen(mptr->spoly))
-                                       uflags |= C_RESULT;
-                               while(mptr && plen(mptr->spoly)) {
-                                       mfree(mptr++);
+                                               mcanon(&pset);
+                                               
+                                               size_t size = (pset.name && *pset.name) ? strlen(pset.name) : 6;
+                                               //PrintAndLog("Size: %d, %s, count: %d",size,pset.name, Cnt);
+                                               char *tmp = calloc(size+1, sizeof(char));
+                                               if (tmp == NULL){
+                                                       PrintAndLog("out of memory?");
+                                                       return 0;
+                                               }
+                                       width[Cnt] = width[0];
+                                               memcpy(tmp, pset.name, size);
+                                               Models[Cnt++] = tmp;
+                                               *count = Cnt;
+                                               uflags |= C_RESULT;
+                                       }

                                }
                                }

-                               free(candmods);
+                               mfree(&pset);
+
+                               /* toggle refIn/refOut and reflect arguments */

                                if(~rflags & R_HAVERI) {
                                        model.flags ^= P_REFIN | P_REFOUT;
                                        for(qptr = apolys; qptr < pptr; ++qptr)
                                                prevch(qptr, ibperhx);
                                }
                        } while(~rflags & R_HAVERI && ++pass < 2);
                                if(~rflags & R_HAVERI) {
                                        model.flags ^= P_REFIN | P_REFOUT;
                                        for(qptr = apolys; qptr < pptr; ++qptr)
                                                prevch(qptr, ibperhx);
                                }
                        } while(~rflags & R_HAVERI && ++pass < 2);

+               }
+               //got everything now free the memory...
+
+               if(uflags & C_RESULT) {

                        for(qptr = apolys; qptr < pptr; ++qptr)
                                pfree(qptr);
                        for(qptr = apolys; qptr < pptr; ++qptr)
                                pfree(qptr);

-                       free(apolys);
-                       if(~uflags & C_RESULT)
-                               return uerr("no models found");
-                       mfree(&model);
+               }
+               if(!(model.flags & P_REFIN) != !(model.flags & P_REFOUT))
+                       return uerr("cannot search for crossed-endian models");
+
+               pass = 0;
+               do {
+                       mptr = candmods = reveng(&model, qpoly, rflags, args, apolys);
+                       if(mptr && plen(mptr->spoly))
+                               uflags |= C_RESULT;
+                       while(mptr && plen(mptr->spoly)) {
+                               mfree(mptr++);
+                       }
+                       free(candmods);
+                       if(~rflags & R_HAVERI) {
+                               model.flags ^= P_REFIN | P_REFOUT;
+                               for(qptr = apolys; qptr < pptr; ++qptr)
+                                       prevch(qptr, ibperhx);
+                       }
+               } while(~rflags & R_HAVERI && ++pass < 2);
+               for(qptr = apolys; qptr < pptr; ++qptr)
+                       pfree(qptr);
+               free(apolys);
+               if(~uflags & C_RESULT)
+                       return uerr("no models found");
+               mfree(&model);

 
        }
        return 1;
 
        }
        return 1;


@@ -318,9 +317,13 @@ int RunModel(char *inModel, char *inHexStr, bool reverse, char endian, char *res
                        model.flags &= ~P_RTJUST;
                        break;
        }
                        model.flags &= ~P_RTJUST;
                        break;
        }

-
+       /* canonicalise the model, so the one we dump is the one we
+        * calculate with (not with -s, spoly may be blank which will
+        * normalise to zero and clear init and xorout.)
+        */

        mcanon(&model);
 
        mcanon(&model);
 

+

        if (reverse) {
                // v  calculate reversed CRC
                /* Distinct from the -V switch as this causes
        if (reverse) {
                // v  calculate reversed CRC
                /* Distinct from the -V switch as this causes