X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ec9c71129f67c5b1c2429dbaefe23e0d19149780..refs/pull/477/head:/client/util.c

diff --git a/client/util.c b/client/util.c
index 0a92f15a..9dab4655 100644
--- a/client/util.c
+++ b/client/util.c
@@ -193,13 +193,14 @@ char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
 	static char buf[1024];
 	char *tmp = buf;
 	memset(buf, 0x00, 1024);
-	size_t max_len = (len > 1010) ? 1010 : len;
-
+	size_t max_len = (len > 255) ? 255 : len;
+	// max 255 bytes * 3 + 2 characters = 767 in buffer
 	sprintf(tmp, "%s| ", sprint_hex(data, max_len) );
 	
 	size_t i = 0;
 	size_t pos = (max_len * 3)+2;
-	while(i < max_len){
+	// add another 255 characters ascii = 1020 characters of buffer used
+	while(i < max_len) {
 		char c = data[i];
 		if ( (c < 32) || (c == 127))
 			c = '.';
@@ -321,7 +322,7 @@ char * printBits(size_t const size, void const * const ptr)
 
 //  -------------------------------------------------------------------------
 //  line     - param line
-//  bg, en   - symbol numbers in param line of beginning an ending parameter
+//  bg, en   - symbol numbers in param line of beginning and ending parameter
 //  paramnum - param number (from 0)
 //  -------------------------------------------------------------------------
 int param_getptr(const char *line, int *bg, int *en, int paramnum)
@@ -354,13 +355,28 @@ int param_getptr(const char *line, int *bg, int *en, int paramnum)
 }
 
 
-char param_getchar(const char *line, int paramnum)
+int param_getlength(const char *line, int paramnum)
 {
 	int bg, en;
 	
+	if (param_getptr(line, &bg, &en, paramnum)) return 0;
+
+	return en - bg + 1;
+}
+
+char param_getchar(const char *line, int paramnum) {
+	return param_getchar_indx(line, 0, paramnum);
+}
+
+char param_getchar_indx(const char *line, int indx, int paramnum) {
+	int bg, en;
+	
 	if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 
-	return line[bg];
+	if (bg + indx > en)
+		return '\0';
+	
+	return line[bg + indx];
 }
 
 uint8_t param_get8(const char *line, int paramnum)
@@ -470,6 +486,51 @@ int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
 
 	return 0;
 }
+
+int param_gethex_to_eol(const char *line, int paramnum, uint8_t * data, int maxdatalen, int *datalen) {
+	int bg, en;
+	uint32_t temp;
+	char buf[5] = {0};
+
+	if (param_getptr(line, &bg, &en, paramnum)) return 1;
+
+	*datalen = 0;
+	
+	int indx = bg;
+	while (line[indx]) {
+		if (line[indx] == '\t' || line[indx] == ' ') 
+			continue;
+		
+		if (isxdigit(line[indx])) {
+			buf[strlen(buf) + 1] = 0x00;
+			buf[strlen(buf)] = line[indx];
+		} else {
+			// if we have symbols other than spaces and hex
+			return 1;
+		}				
+
+		if (*datalen >= maxdatalen) {
+			// if we dont have space in buffer and have symbols to translate
+			return 2;
+		}
+
+		if (strlen(buf) >= 2) {
+			sscanf(buf, "%x", &temp);
+			data[*datalen] = (uint8_t)(temp & 0xff);
+			*buf = 0;
+			(*datalen)++;
+		}
+		
+		indx++;
+	}
+
+	if (strlen(buf) > 0) 
+		//error when not completed hex bytes
+		return 3;
+		
+	return 0;
+}
+
 int param_getstr(const char *line, int paramnum, char * str)
 {
 	int bg, en;
@@ -613,7 +674,28 @@ void clean_ascii(unsigned char *buf, size_t len) {
   }
 }
 
+// replace \r \n to \0
+void strcleanrn(char *buf, size_t len) {
+	strcreplace(buf, len, '\n', '\0');
+	strcreplace(buf, len, '\r', '\0');
+}
 
+// replace char in buffer
+void strcreplace(char *buf, size_t len, char from, char to) {
+  for (size_t i = 0; i < len; i++) {
+    if (buf[i] == from)
+      buf[i] = to;
+  }
+}
+
+char *strmcopy(char *buf) {
+	char * str = NULL;
+	if ((str = (char*) malloc(strlen(buf) + 1)) != NULL) {
+		memset(str, 0, strlen(buf) + 1);
+		strcpy(str, buf);
+	}	
+	return str;
+}
 
 
 // determine number of logical CPU cores (use for multithreaded functions)