first beta - patch sent to librfid list

diff --git a/gemtag/gemtag.c b/gemtag/gemtag.c
index 121170f..e674d49 100644 (file)
--- a/gemtag/gemtag.c
+++ b/gemtag/gemtag.c
@@ -1,5 +1,6 @@
 /*
- *  (C) 2006 by Frank Zirkelbach <hackbard@hackdaworld.org>
+ *  (C) 2006 by Harald Welte <laforge@gnumonks.org>
+ *              Frank Zirkelbach <hackbard@hackdaworld.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 
@@ -25,21 +26,20 @@
 #include "gemtag.h"
 
 int asciidump(unsigned char *data,int len) {
+
        int i;
 
        for(i=0;i<len;i++)
-               if((data[i]>0x19)&&(data[i]<0x7f)) printf("%c",data[i]);
-               else printf(".");
-       //printf("\n");
+               printf("%c",(data[i]>0x19)&&(data[i]<0x7f)?data[i]:'.');
 
        return 0;
 }
 
 int hexdump(unsigned char *data,int len) {
+
        int i;
 
        for(i=0;i<len;i++) printf("%02x ",data[i]);
-       //printf("\n");
 
        return 0;
 }
@@ -181,6 +181,7 @@ int gemtag_transceive(struct gemtag_handle *gh,unsigned char cmd,
 }
 
 struct gemtag_handle *gemtag_open(void) {
+
        struct usb_device *gemtag;
        unsigned int i;
        struct gemtag_handle *gh;
@@ -252,13 +253,28 @@ int gemtag_transform_mifare_key(struct gemtag_handle *gh,
        return 0;
 }
 
-int gemtag_auth_key(struct gemtag_handle *gh,unsigned char authmode,
-                    int sector,unsigned char *key6) {
+int gemtag_auth_e2(struct gemtag_handle *gh,unsigned char authmode,
+                   int sector,unsigned char *key6) {
 
        unsigned char buf[32];
        unsigned int len,ret;
 
-       /* to be continued */
+       /* memory layout (sector/block) ? */
+
+       buf[0]=authmode;
+       buf[1]=0;
+       memcpy(buf+2,key6,6);
+       ret=gemtag_transceive(gh,GEMTAG_CMD_PCD_LOAD_KEY_E2,buf,8,buf,&len);
+       if(ret) return -LOAD_E2_FAILED;
+
+       buf[0]=authmode;
+       memcpy(buf+1,gh->serial,4);
+       buf[5]=0;
+       buf[6]=sector;
+       ret=gemtag_transceive(gh,GEMTAG_CMD_PICC_AUTH_E2,buf,7,buf,&len);
+       if(ret) return -AUTH_E2_FAILED;
+
+       return 0;
 
 }
 
@@ -302,8 +318,9 @@ int gemtag_write16(struct gemtag_handle *gh,int sector,unsigned char *data) {
        buf[0]=sector;
        memcpy(buf+1,data,16);
        ret=gemtag_transceive(gh,GEMTAG_CMD_PICC_WRITE,buf,17,buf,&len);
+       if(ret) return -WRITE_FAILED;
 
-       return ret;
+       return 0;
 }
 
 int gemtag_select_picc(struct gemtag_handle *gh) {
@@ -342,14 +359,6 @@ int main(int argc, char **argv) {
        gh->caps|=GEMTAG_CAP_CRC;
        //gh->caps|=GEMTAG_CAP_VERB_TRANSMIT;
 
-       /*
-       printf("Device:\n");
-       gemtag_transceive(gh,GEMTAG_CMD_GET_FW_VERSION,
-                         NULL,0,buf,&buflen);
-       asciidump(buf,buflen);
-       printf("\n");
-       */
-
        if(gemtag_select_picc(gh)) {
                printf("no card found!\n");
                return -NO_PICC;
@@ -360,7 +369,7 @@ int main(int argc, char **argv) {
               gh->serial[3],gh->serial[2],gh->serial[1],gh->serial[0]);
        i=0;
        while(!gemtag_auth_mifare_key(gh,key6,i)) {
-               gemtag_read16(gh,i,buf);
+               ret=gemtag_read16(gh,i,buf);
                printf("%02x: ",i);
                hexdump(buf,16);
                printf(" | ");
@@ -370,23 +379,6 @@ int main(int argc, char **argv) {
        }
        printf("\n");
 
-       /* try to write some data */
-       printf("write some data to the sector 04:\n");
-       for(i=0;i<16;i++) buf[i]=i;
-       i=4;
-       ret=gemtag_auth_mifare_key(gh,key6,i);
-       printf("return = %d\n",ret);
-       if(ret) printf("auth failed!\n");
-       ret=gemtag_write16(gh,i,buf);
-       if(ret) printf("write failed!\n");
-       printf("return = %d\n",ret);
-       ret=gemtag_read16(gh,i,buf);
-       if(ret) printf("read failed!\n");
-       printf("return = %d\n",ret);
-       printf("%02x: ",i);
-       hexdump(buf,16);
-       printf("\n");
-
        gemtag_close(gh);
 
        return 0;

diff --git a/gemtag/gemtag.h b/gemtag/gemtag.h
index dfdfa64..e5c24bf 100644 (file)
--- a/gemtag/gemtag.h
+++ b/gemtag/gemtag.h
@@ -1,5 +1,6 @@
 /*
- * (C) 2006 by Frank Zirkelbach <hackbard@hackdaworld.org>
+ * (C) 2006 by Harald Welte <laforge@gnumonks.org>
+ *             Frank Zirkelbach <hackbard@hackdaworld.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 
@@ -47,6 +48,8 @@ struct gemtag_cmd_hdr {
 #define WRITE_FAILED                   0x07
 #define NO_PICC                                0x08
 #define PICC_SELECT_ERROR              0x09
+#define LOAD_E2_FAILED                 0x0a
+#define AUTH_E2_FAILED                 0x0b
 
 /* gemtag commands */
 
@@ -122,6 +125,7 @@ struct gemtag_cmd_hdr {
 
 
 /* function prototypes */
+
 int asciidump(unsigned char *data,int len);
 int hexdump(unsigned char *data,int len);
 struct usb_device *find_device(unsigned short vendor,unsigned short device);
@@ -133,6 +137,8 @@ struct gemtag_handle *gemtag_open(void);
 int gemtag_close(struct gemtag_handle *gh);
 int gemtag_transform_mifare_key(struct gemtag_handle *gh,
                                 unsigned char *key6,unsigned char *key12);
+int gemtag_auth_e2(struct gemtag_handle *gh,unsigned char authmode,
+                   int sector,unsigned char *key6);
 int gemtag_auth_mifare_key(struct gemtag_handle *gh,
                            unsigned char *key6,int sector);
 int gemtag_read16(struct gemtag_handle *gh,int sector,unsigned char *data);