X-Git-Url: https://harishankar.org/repos/?a=blobdiff_plain;f=wordblox.h;h=e27d37cfbaeabe9b3f5b0e147e14a0e3f63d52e2;hb=350edf3c909ce7926dc84411190cca003f6ac2e9;hp=b6579861deb0ae4a99b7b4ac866ad352974e53b0;hpb=f5202f7c1ec8a765f4d0325e56f6d89ca22bef28;p=wordblah.git

diff --git a/wordblox.h b/wordblox.h
index b657986..e27d37c 100644
--- a/wordblox.h
+++ b/wordblox.h
@@ -69,6 +69,7 @@ typedef struct {
 	char char_ans[MAX_PUZZLE_SIZE][MAX_PUZZLE_SIZE];
 	int cur_row;
 	int cur_col;
+	enum ORIENTATION current_movement;
 } MainPlayerData;
 
 /* compute the hash of a password */
@@ -101,6 +102,23 @@ err:
 	exit (2);
 }
 
+/* convert the hashed binary password to hexadecimal representation and
+   free the hashed binary password */
+void to_hexadecimal (char *hex, unsigned char *binary_pwd, unsigned int len)
+{
+	char buf[3];
+	/* keep reference to beginning of the hashed password */
+	unsigned char *binary_pw_begin = binary_pwd;
+	for (int i = 0; i < len; i ++)
+	{
+		sprintf (buf, "%02x", (*binary_pwd)&0xff);
+		strcat (hex, buf);
+		binary_pwd ++;
+	}
+	/* free the hashed password */
+	OPENSSL_free (binary_pw_begin);	
+}
+
 /* get a number from the user */
 int get_num ()
 {
@@ -122,13 +140,12 @@ bool verify_password (Puzzle *p, const char* password)
 	unsigned int len;
 	digest_message ((const unsigned char *)password, strlen(password),
 						&hashed_password, &len);
+	char hashed_hex_pwd[256] = { (char) NULL };
+	to_hexadecimal (hashed_hex_pwd, hashed_password, len);
 	
-	if (strcmp (p->hashed_password, (const char*) hashed_password) == 0)
-	{
-		OPENSSL_free (hashed_password);
+	if (strcmp (p->hashed_password, hashed_hex_pwd) == 0)
 		return true;
-	}
-	OPENSSL_free (hashed_password);	
+	
 	return false;
 }
 
@@ -148,9 +165,14 @@ void set_puzzle_password (Puzzle *p, const char *password)
 		unsigned int len;
 		digest_message ((const unsigned char *)password, strlen(password),
 						&hashedpwd, &len);
-		strcpy (p->hashed_password, (const char *)hashedpwd);
+		/* the hashedpwd contains binary data - we will convert it to 
+		   hexadecimal data and store in file */
+
+		to_hexadecimal (p->hashed_password, hashedpwd, len);
+		printf ("%s\n", p->hashed_password);
+		
 		strcpy (p->salt, "\0");
-		OPENSSL_free (hashedpwd);
+
 	}
 }
 
@@ -269,6 +291,46 @@ void reset_color () {
 	printf ("\x1B[0m");
 }
 
+/* check if the prev row has a block or not */
+bool prev_row_block (Puzzle *p, int r, int c)
+{
+	if (r == 0)
+		return true;
+	if (p->chars[r-1][c] == '#')
+		return true;
+	return false;
+}
+
+/* check if the next row has a block or not */
+bool next_row_block (Puzzle *p, int r, int c)
+{
+	if (r == p->grid_size-1)
+		return true;
+	if (p->chars[r+1][c] == '#')
+		return true;
+	return false;
+}
+
+/* check if the prev col has a block or not */
+bool prev_col_block (Puzzle *p, int r, int c)
+{
+	if (c == 0)
+		return true;
+	if (p->chars[r][c-1] == '#')
+		return true;
+	return false;
+}
+
+/* check if the next col has a block or not */
+bool next_col_block (Puzzle *p, int r, int c)
+{
+	if (c == p->grid_size - 1)
+		return true;
+	if (p->chars[r][c+1] == '#')
+		return true;
+	return false;
+}
+
 /* check if previous row is blank or not */
 bool prev_row_blank (Puzzle *p, int r, int c) 
 {
@@ -298,6 +360,34 @@ bool next_col_blank (Puzzle *p, int r, int c)
 	return false;
 }
 
+/* set the current row/col to the beginning of word index (across or down) */
+void set_selection_to_word_start (MainPlayerData *app_data,
+								 enum ORIENTATION orient, int word_index)
+{
+	for (int i = 0; i < app_data->puzzle.grid_size; i ++)
+	{
+		for (int j = 0; j < app_data->puzzle.grid_size; j ++)
+		{
+			if (orient == ACROSS && 
+				app_data->puzzle.start_across_word[i][j] == word_index)
+			{
+				app_data->current_movement = ACROSS;
+				app_data->cur_row = i;
+				app_data->cur_col = j;
+				break;
+			}
+			else if (orient == DOWN && 
+				app_data->puzzle.start_down_word[i][j] == word_index)
+			{
+				app_data->current_movement = DOWN;
+				app_data->cur_row = i;
+				app_data->cur_col = j;
+				break;
+			}
+		}
+	}
+}
+
 /* unfreeze the grid - make editing possible to change words */
 void unfreeze_puzzle (Puzzle *p)
 {