#ifndef __WORDBLOX_H
#define __WORDBLOX_H
-
+#define _XOPEN_SOURCE
+#include <unistd.h>
#include <gd.h>
#include <gdfontmb.h>
#include <gdfontg.h>
+#include <zlib.h>
#include "constantstrings.h"
#define MAX_PUZZLE_SIZE 20
String clue_down[MAX_PUZZLE_SIZE][MAX_PUZZLE_SIZE];
int grid_size;
bool grid_frozen;
+ char hashed_password[256];
+ char salt[256];
} Puzzle;
/* get a number from the user */
return n;
}
+/* verify password */
+bool verify_password (Puzzle *p, const char* password)
+{
+ /* no password set */
+ if (strcmp (p->hashed_password, "\0") == 0)
+ return true;
+
+ /* hash the user input password and compare it with the stored password */
+ char* hashed_password = crypt (password, (const char *)p->salt);
+
+ if (strcmp (p->hashed_password, hashed_password) == 0)
+ return true;
+
+ return false;
+}
+
+/* Set or reset password for puzzle */
+void set_puzzle_password (Puzzle *p, const char *password)
+{
+ /* if it is a null string, reset the password */
+ if (strcmp (password, "\0") == 0)
+ {
+ strcpy (p->hashed_password, "\0");
+ strcpy (p->salt, "\0");
+ }
+ else
+ {
+ srand (time(NULL));
+ char salt[256];
+ sprintf (salt, "puzzle%d", rand()%1000);
+ char* hashedpwd = crypt (password, (const char*)salt);
+ strcpy (p->hashed_password, hashedpwd);
+ strcpy (p->salt, salt);
+ }
+}
+
+/* Output the clues to text file */
+void export_clues (Puzzle *p, const char *filename)
+{
+ FILE *outfile = fopen (filename, "w");
+ if (outfile == NULL)
+ {
+ fprintf (stderr, "%s\n", ERROR_WRITING_FILE);
+ exit (1);
+ }
+ /* first the across clues */
+ fprintf (outfile, "ACROSS CLUES\n");
+ for (int i = 0; i < p->grid_size; i ++)
+ {
+ for (int j = 0; j < p->grid_size; j ++)
+ {
+ if (p->start_across_word[i][j] != -1)
+ fprintf (outfile, "%d - %s\n", p->start_across_word[i][j],
+ p->clue_across[i][j]);
+ }
+ }
+ /* now the down clues */
+ fprintf (outfile, "DOWN CLUES\n");
+ for (int i = 0; i < p->grid_size; i ++)
+ {
+ for (int j = 0; j < p->grid_size; j ++)
+ {
+ if (p->start_down_word[i][j] != -1)
+ fprintf (outfile, "%d - %s\n", p->start_down_word[i][j],
+ p->clue_down[i][j]);
+ }
+ }
+ fclose (outfile);
+}
+
/* Output the grid to image - if answerkey is true export filled grid */
void export_grid_image (Puzzle *p, const char *filename, bool answerkey)
{
strcpy (p->clue_down[i][j], "");
}
}
+ strcpy (p->hashed_password, "\0");
+ strcpy (p->salt, "\0");
+
}
-/* save the puzzle */
+/* save the puzzle to a file */
void save_puzzle (Puzzle *puzzle, const char* file) {
FILE *outfile;
- outfile = fopen (file, "wb");
+ /* First output the uncompressed contents to temp file */
+ outfile = tmpfile ();
if (outfile == NULL)
{
fprintf (stderr, "%s\n", ERROR_WRITING_FILE);
exit (1);
}
- fwrite (puzzle, sizeof (*puzzle), 1, outfile);
+ /* grid size is the first field */
+ fprintf (outfile, "%d\n", puzzle->grid_size);
+ /* whether grid is frozen or not */
+ fprintf (outfile, "%d\n", puzzle->grid_frozen);
+ /* the hashed password */
+ fprintf (outfile, "%s\n", puzzle->hashed_password);
+ /* the salt */
+ fprintf (outfile, "%s\n", puzzle->salt);
+
+ /* First output the grid characters columns/rows */
+ for (int i = 0; i < puzzle->grid_size; i ++)
+ {
+ for (int j = 0; j < puzzle->grid_size; j ++)
+ fprintf (outfile, "%c", puzzle->chars[i][j]);
+ fprintf (outfile, "\n");
+ }
+
+ /* Next output the start across/down numbers */
+ for (int i = 0; i < puzzle->grid_size; i ++)
+ {
+ for (int j = 0; j < puzzle->grid_size; j++)
+ {
+ fprintf (outfile, "%d ", puzzle->start_across_word[i][j]);
+ fprintf (outfile, "%d ", puzzle->start_down_word[i][j]);
+ }
+ fprintf (outfile, "\n");
+ }
+
+ /* Output the across clues */
+ fprintf (outfile, "ACROSS\n");
+ /* Search the grid for across words */
+ for (int i = 0; i < puzzle->grid_size; i ++)
+ {
+ for (int j = 0; j < puzzle->grid_size; j++)
+ {
+ /* if it is an across word, then put the word index followed by
+ tab character (as separator) and the clue */
+ if (puzzle->start_across_word[i][j] != -1)
+ fprintf (outfile, "%d\t%s\n", puzzle->start_across_word[i][j],
+ puzzle->clue_across[i][j]);
+ }
+ }
+
+ /* Output the down clues */
+ fprintf (outfile, "DOWN\n");
+ /* Search the grid for down words */
+ for (int i = 0; i < puzzle->grid_size; i ++)
+ {
+ for (int j = 0; j < puzzle->grid_size; j++)
+ {
+ /* same as across word, put the word index followed by the tab
+ character and then the clue */
+ if (puzzle->start_down_word[i][j] != -1)
+ fprintf (outfile, "%d\t%s\n", puzzle->start_down_word[i][j],
+ puzzle->clue_down[i][j]);
+ }
+ }
+
+ /* Flush the buffer and rewind to beginning - to read and save into
+ gzip compressed file */
+ fflush (outfile);
+ fseek (outfile, 0, 0);
+
+ /* now compress the file and save it to destination file */
+ gzFile outdestfile = gzopen (file, "wb");
+ if (outdestfile == NULL)
+ {
+ fprintf (stderr, ERROR_WRITING_FILE);
+ fclose (outfile);
+ exit (1);
+ }
+ char buf[4096];
+ while (fread (buf, sizeof(char), 4096, outfile))
+ {
+ int res = gzwrite (outdestfile, buf, strlen (buf) );
+ if (res == 0)
+ {
+ fprintf (stderr, "%s %s", ERROR_WRITING_FILE, COMPRESSED);
+ fclose (outfile);
+ exit (1);
+ }
+ }
+ gzclose (outdestfile);
fclose (outfile);
+
}
-/* read the puzzle */
+/* read the puzzle from a file */
Puzzle load_puzzle (const char* file) {
- FILE *infile;
- Puzzle p;
- infile = fopen (file, "rb");
- if (infile == NULL)
+ /* First open the GZip file */
+ gzFile insourcefile = gzopen (file, "rb");
+ if (insourcefile == NULL)
{
- fprintf (stderr, "%s\n", ERROR_READING_FILE);
+ fprintf (stderr, "%s %s", ERROR_READING_FILE, COMPRESSED);
exit (1);
}
- fread (&p, sizeof(p), 1, infile);
+ /* Open a temporary file to uncompress the contents */
+ FILE *infile = tmpfile ();
+ if (infile == NULL)
+ {
+ fprintf (stderr, ERROR_READING_FILE);
+ exit (1);
+ }
+ /* Put the uncompressed content to the temp file */
+ char buf[4096];
+ while (gzread (insourcefile, buf, 4096))
+ {
+ int res = fwrite (buf, sizeof(char), strlen (buf), infile);
+ if (res == 0)
+ {
+ fprintf (stderr, ERROR_READING_FILE);
+ fclose (infile);
+ gzclose (insourcefile);
+ exit (1);
+ }
+ }
+ /* Close the gzip file */
+ gzclose (insourcefile);
+ /* Flush the temp file buffer and rewind to beginning */
+ fflush (infile);
+ fseek (infile, 0, 0);
+
+ /* Read the temporary file contents to the structure Puzzle */
+ Puzzle p;
+ char line[MAX_CLUE_LENGTH+10];
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+ p.grid_size = atoi (line);
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+ p.grid_frozen = atoi (line) == 0 ? false : true ;
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+ if (strlen (line) != 1)
+ strcpy (p.hashed_password, strtok (line, "\n"));
+ else
+ strcpy (p.hashed_password, "\0");
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+ if (strlen (line) != 1)
+ strcpy (p.salt, strtok (line, "\n"));
+ else
+ strcpy (p.salt, "\0");
+
+ /* read each character of the grid */
+ for (int i = 0; i < p.grid_size; i ++ )
+ {
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+ for (int j = 0; j < p.grid_size; j ++)
+ p.chars[i][j] = line[j];
+ }
+ /* read the word numbers */
+ for (int i = 0; i < p.grid_size; i ++)
+ {
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+ char *token = strtok (line, " ");
+ for (int j = 0; j < p.grid_size; j ++)
+ {
+ if (token != NULL)
+ p.start_across_word[i][j] = atoi (token);
+ token = strtok (NULL, " ");
+ if (token != NULL)
+ p.start_down_word[i][j] = atoi (token);
+ token = strtok (NULL, " ");
+ }
+ }
+ /* read the clues */
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+
+ /* across clues */
+ char clues[100][MAX_CLUE_LENGTH];
+ int word_num[100];
+ int c = 0;
+ /* first read the across clues from file */
+ while (1)
+ {
+ fgets (line, MAX_CLUE_LENGTH + 10, infile);
+ /* if reached the end of across clues */
+ if (strcmp (line, "DOWN\n") == 0)
+ break;
+ word_num[c] = atoi (strtok (line, "\t"));
+ char *cl = strtok (NULL, "\n");
+ if (cl != NULL)
+ strcpy (clues[c], cl);
+ else
+ strcpy (clues[c], "\0");
+ c++;
+ }
+ /* set the clue to the correct cell in grid */
+ for (int i = 0; i < p.grid_size; i ++)
+ {
+ for (int j = 0; j < p.grid_size; j ++)
+ {
+ for (int r = 0; r < c; r ++)
+ if (p.start_across_word[i][j] == word_num[r])
+ strcpy (p.clue_across[i][j], clues[r]);
+ }
+ }
+
+ /* down clues */
+ c = 0;
+ while (fgets (line, MAX_CLUE_LENGTH + 10, infile))
+ {
+ word_num[c] = atoi (strtok (line, "\t"));
+ char* cl = strtok (NULL, "\n");
+ if (cl != NULL)
+ strcpy (clues[c], cl);
+ else
+ strcpy (clues[c], "\0");
+ c++;
+ }
+ for (int i = 0; i < p.grid_size; i ++)
+ {
+ for (int j = 0; j < p.grid_size; j ++)
+ {
+ for (int r = 0; r < c; r ++)
+ if (p.start_down_word[i][j] == word_num[r])
+ strcpy (p.clue_down[i][j], clues[r]);
+ }
+ }
+
fclose (infile);
return p;
}
}
/* function to check if a word is valid or not */
-bool is_valid_word (const char *word)
+char* is_valid_word (char *word)
{
- for (int i = 0; i < strlen (word); i ++)
+ if (word == NULL || strlen(word) == 0)
+ return NULL;
+ for (int i = 0; i < strlen (word) - 1; i ++)
if (! isalpha (word[i]))
- return false;
+ return NULL;
- return true;
+ return strtok (word, "\n");
}
printf ("\u2550");
printf ("\u2557");
reset_color (); printf ("\n");
+ printf ("\u2551");
set_color (fg, bg, BOLD);
- printf ("\u2551%-*s\u2551", padding, title);
+ printf ("%-*s", padding, title);
+ reset_color ();
+ set_color (fg, bg, NORMAL);
+ printf ("\u2551");
reset_color (); printf ("\n");
set_color (fg, bg, NORMAL);
printf ("\u2560");
projects / wordblah.git / blobdiff