fix inconsistent tabs and spaces

ratbox-respond.c

@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <signal.h>
 #include <openssl/err.h>
 #include <openssl/rsa.h>
 #include <openssl/pem.h>
@@ -35,6 +36,8 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 
+RSA *rsa = NULL;
+
 void nodumps()
 {
 	struct rlimit r;
@@ -42,31 +45,37 @@ void nodumps()
 	setrlimit(RLIMIT_CORE, &r);
 }
 
+void byebye(int sig)
+{
+	memset(rsa, 0, sizeof rsa);
+	exit(0);
+}
+
 static int called_passcb = 0;
 static int pass_cb(char *buf, int size, int rwflag, void *u)
 {
 	int len;
-        char *tmp;
+	char *tmp;
 
 	called_passcb++;
 
-        if(!isatty(fileno(stdin)))
+	if(!isatty(fileno(stdin)))
 	{
-        	if(fgets(buf, size, stdin) == NULL)
-        		return 0;
+		if(fgets(buf, size, stdin) == NULL)
+			return 0;
 		tmp = strpbrk(buf, "\r\n");
 		if(tmp != NULL)
 			*tmp = '\0';
 		return strlen(buf);
-        }
+	}
 	tmp = getpass("Enter passphrase for private key: ");
-        len = strlen(tmp);
-        if (len <= 0) 
+	len = strlen(tmp);
+	if (len <= 0) 
 		return 0;
-        if (len > size)
-        	len = size;
-        memcpy(buf, tmp, len);
-        return len;
+	if (len > size)
+		len = size;
+	memcpy(buf, tmp, len);
+	return len;
 }
 
 
@@ -210,7 +219,7 @@ read_challenge(FILE *f)
 		}
 	}
 
-        fgets((char *)buf, sizeof(buf), stdin);
+	fgets((char *)buf, sizeof(buf), stdin);
 
 	tmp = strpbrk((char *)buf, "\r\n");
 	if(tmp != NULL)
@@ -224,10 +233,17 @@ read_challenge(FILE *f)
 int
 main(int argc, char **argv)
 {
+	struct sigaction act;
+
+	act.sa_handler = byebye;
+
+	sigaction(SIGHUP,  &act, 0);
+	sigaction(SIGINT,  &act, 0);
+	sigaction(SIGTERM, &act, 0);
+
 	nodumps();
 
 	FILE *kfile;
-	RSA *rsa = NULL;
 	SHA_CTX ctx;
 	unsigned char *ptr;
 	unsigned char *ndata, ddata[512];
@@ -283,5 +299,5 @@ main(int argc, char **argv)
 		puts((char *)ndata);
 		fflush(NULL);
 	}
-	return 0;
+	byebye(0);
 }