extracted download and signature verification functionality to a function in tools...

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 2c02d119449667a95f9aebb7744784ae86840284..ae213e43f55a4521dddafd70393ae6e950119e71 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -1,5 +1,53 @@
+//-----------------------------------------------------------------------------
+// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// utilities
+//-----------------------------------------------------------------------------
+
 #include <stdio.h>
-#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include "util.h"
+
+#ifndef WIN32
+#include <termios.h>
+#include <sys/ioctl.h> 
+int ukbhit(void)
+{
+  int cnt = 0;
+  int error;
+  static struct termios Otty, Ntty;
+
+
+  tcgetattr( 0, &Otty);
+  Ntty = Otty;
+
+  Ntty.c_iflag          = 0;       /* input mode                */
+  Ntty.c_oflag          = 0;       /* output mode               */
+  Ntty.c_lflag         &= ~ICANON; /* raw mode */
+  Ntty.c_cc[VMIN]       = CMIN;    /* minimum time to wait      */
+  Ntty.c_cc[VTIME]      = CTIME;   /* minimum characters to wait for */
+
+  if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
+    error += ioctl(0, FIONREAD, &cnt);
+    error += tcsetattr(0, TCSANOW, &Otty);
+  }
+
+  return ( error == 0 ? cnt : -1 );
+}
+
+#else
+#include <conio.h>
+int ukbhit(void) {
+       return kbhit();
+}
+#endif
+
 
 void print_hex(const uint8_t * data, const size_t len)
 {
@@ -21,3 +69,140 @@ char * sprint_hex(const uint8_t * data, const size_t len) {
 
        return buf;
 }
+
+void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
+{
+       while (len--) {
+               dest[len] = (uint8_t) n;
+               n >>= 8;
+       }
+}
+
+uint64_t bytes_to_num(uint8_t* src, size_t len)
+{
+       uint64_t num = 0;
+       while (len--)
+       {
+               num = (num << 8) | (*src);
+               src++;
+       }
+       return num;
+}
+
+//  -------------------------------------------------------------------------
+//  string parameters lib
+//  -------------------------------------------------------------------------
+
+//  -------------------------------------------------------------------------
+//  line     - param line
+//  bg, en   - symbol numbers in param line of beginning an ending parameter
+//  paramnum - param number (from 0)
+//  -------------------------------------------------------------------------
+int param_getptr(const char *line, int *bg, int *en, int paramnum)
+{
+       int i;
+       int len = strlen(line);
+       
+       *bg = 0;
+       *en = 0;
+       
+  // skip spaces
+       while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
+       if (*bg >= len) {
+               return 1;
+       }
+
+       for (i = 0; i < paramnum; i++) {
+               while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
+               while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
+               
+               if (line[*bg] == '\0') return 1;
+       }
+       
+       *en = *bg;
+       while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
+       
+       (*en)--;
+
+       return 0;
+}
+
+char param_getchar(const char *line, int paramnum)
+{
+       int bg, en;
+       
+       if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
+
+       return line[bg];
+}
+
+uint8_t param_get8(const char *line, int paramnum)
+{
+       return param_get8ex(line, paramnum, 10, 0);
+}
+
+uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
+{
+       int bg, en;
+
+       if (!param_getptr(line, &bg, &en, paramnum)) 
+               return strtol(&line[bg], NULL, base) & 0xff;
+       else
+               return deflt;
+}
+
+uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
+{
+       int bg, en;
+
+       if (!param_getptr(line, &bg, &en, paramnum)) 
+               return strtol(&line[bg], NULL, base);
+       else
+               return deflt;
+}
+
+uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
+{
+       int bg, en;
+
+       if (!param_getptr(line, &bg, &en, paramnum)) 
+               return strtol(&line[bg], NULL, base);
+       else
+               return deflt;
+
+       return 0;
+}
+
+int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
+{
+       int bg, en, temp, i;
+
+       if (hexcnt % 2)
+               return 1;
+       
+       if (param_getptr(line, &bg, &en, paramnum)) return 1;
+
+       if (en - bg + 1 != hexcnt) 
+               return 1;
+
+       for(i = 0; i < hexcnt; i += 2) {
+               if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
+               
+               sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
+               data[i / 2] = temp & 0xff;
+       }       
+
+       return 0;
+}
+
+int param_getstr(const char *line, int paramnum, char * str)
+{
+       int bg, en;
+
+       if (param_getptr(line, &bg, &en, paramnum)) return 0;
+       
+       memcpy(str, line + bg, en - bg + 1);
+       str[en - bg + 1] = 0;
+       
+       return en - bg + 1;
+}