Add bomblab files

LAB3-bomblab/README

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+This is bomb 13.
+
+It belongs to 202026010209 (esnl@hnu.edu.cn)

LAB3-bomblab/bomb.c

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+/***************************************************************************
+ * Dr. Evil's Insidious Bomb, Version 1.1
+ * Copyright 2011, Dr. Evil Incorporated. All rights reserved.
+ *
+ * LICENSE:
+ *
+ * Dr. Evil Incorporated (the PERPETRATOR) hereby grants you (the
+ * VICTIM) explicit permission to use this bomb (the BOMB).  This is a
+ * time limited license, which expires on the death of the VICTIM.
+ * The PERPETRATOR takes no responsibility for damage, frustration,
+ * insanity, bug-eyes, carpal-tunnel syndrome, loss of sleep, or other
+ * harm to the VICTIM.  Unless the PERPETRATOR wants to take credit,
+ * that is.  The VICTIM may not distribute this bomb source code to
+ * any enemies of the PERPETRATOR.  No VICTIM may debug,
+ * reverse-engineer, run "strings" on, decompile, decrypt, or use any
+ * other technique to gain knowledge of and defuse the BOMB.  BOMB
+ * proof clothing may not be worn when handling this program.  The
+ * PERPETRATOR will not apologize for the PERPETRATOR's poor sense of
+ * humor.  This license is null and void where the BOMB is prohibited
+ * by law.
+ ***************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "support.h"
+#include "phases.h"
+
+/* 
+ * Note to self: Remember to erase this file so my victims will have no
+ * idea what is going on, and so they will all blow up in a
+ * spectaculary fiendish explosion. -- Dr. Evil 
+ */
+
+FILE *infile;
+
+int main(int argc, char *argv[])
+{
+    char *input;
+
+    /* Note to self: remember to port this bomb to Windows and put a 
+     * fantastic GUI on it. */
+
+    /* When run with no arguments, the bomb reads its input lines 
+     * from standard input. */
+    if (argc == 1) {  
+	infile = stdin;
+    } 
+
+    /* When run with one argument <file>, the bomb reads from <file> 
+     * until EOF, and then switches to standard input. Thus, as you 
+     * defuse each phase, you can add its defusing string to <file> and
+     * avoid having to retype it. */
+    else if (argc == 2) {
+	if (!(infile = fopen(argv[1], "r"))) {
+	    printf("%s: Error: Couldn't open %s\n", argv[0], argv[1]);
+	    exit(8);
+	}
+    }
+
+    /* You can't call the bomb with more than 1 command line argument. */
+    else {
+	printf("Usage: %s [<input_file>]\n", argv[0]);
+	exit(8);
+    }
+
+    /* Do all sorts of secret stuff that makes the bomb harder to defuse. */
+    initialize_bomb();
+
+    printf("Welcome to my fiendish little bomb. You have 6 phases with\n");
+    printf("which to blow yourself up. Have a nice day!\n");
+
+    /* Hmm...  Six phases must be more secure than one phase! */
+    input = read_line();             /* Get input                   */
+    phase_1(input);                  /* Run the phase               */
+    phase_defused();                 /* Drat!  They figured it out!
+				      * Let me know how they did it. */
+    printf("Phase 1 defused. How about the next one?\n");
+
+    /* The second phase is harder.  No one will ever figure out
+     * how to defuse this... */
+    input = read_line();
+    phase_2(input);
+    phase_defused();
+    printf("That's number 2.  Keep going!\n");
+
+    /* I guess this is too easy so far.  Some more complex code will
+     * confuse people. */
+    input = read_line();
+    phase_3(input);
+    phase_defused();
+    printf("Halfway there!\n");
+
+    /* Oh yeah?  Well, how good is your math?  Try on this saucy problem! */
+    input = read_line();
+    phase_4(input);
+    phase_defused();
+    printf("So you got that one.  Try this one.\n");
+    
+    /* Round and 'round in memory we go, where we stop, the bomb blows! */
+    input = read_line();
+    phase_5(input);
+    phase_defused();
+    printf("Good work!  On to the next...\n");
+
+    /* This phase will never be used, since no one will get past the
+     * earlier ones.  But just in case, make this one extra hard. */
+    input = read_line();
+    phase_6(input);
+    phase_defused();
+
+    /* Wow, they got it!  But isn't something... missing?  Perhaps
+     * something they overlooked?  Mua ha ha ha ha! */
+    
+    return 0;
+}