X-Git-Url: http://git.bytex64.net/?a=blobdiff_plain;f=common%2Fauth.c;h=26569fd86c31773b10b465642328eeb1d1eb82b4;hb=d119f69edc7c2a9ad2ded2be7fe71eae89926f92;hp=cdfbf85f396fed3cbb2d640db412baa8c5815b73;hpb=96ec261b36bdbb701e05f5ee1aab70dec44085f9;p=blerg.git

diff --git a/common/auth.c b/common/auth.c
index cdfbf85..26569fd 100644
--- a/common/auth.c
+++ b/common/auth.c
@@ -1,3 +1,6 @@
+/* Blerg is (C) 2011 The Dominion of Awesome, and is distributed under a
+ * BSD-style license.  Please see the COPYING file for details.
+ */
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
@@ -9,17 +12,22 @@
 #include "util.h"
 
 #define TOKEN_SIZE 16
+#define MAX_PASSWORD_LENGTH 64
 
 int auth_set_password(const char *username, const char *password) {
 	char filename[512];
-	int fd;
+	int fd, n;
 
 	if (!valid_name(username) || !blerg_exists(username))
 		return 0;
 
+	n = strlen(password);
+	if (n > MAX_PASSWORD_LENGTH)
+		return 0;
+
 	snprintf(filename, 512, "%s/%s/password", DATA_PATH, username);
 	fd = open(filename, O_WRONLY | O_CREAT, 0600);
-	write(fd, password, strlen(password));
+	write(fd, password, n);
 	close(fd);
 	
 	return 1;
@@ -37,7 +45,7 @@ int auth_get_password(const char *username, char *password) {
 	fd = open(filename, O_RDONLY);
 	if (fd == -1)
 		return 0;
-	len = read(fd, password, 32);
+	len = read(fd, password, MAX_PASSWORD_LENGTH);
 	close(fd);
 
 	password[len] = 0;
@@ -51,7 +59,7 @@ int auth_check_password(const char *username, const char *password) {
 	if (auth_get_password(username, epw) == 0)
 		return 0;
 
-	if (strncmp(password, epw, 32) == 0)
+	if (strncmp(password, epw, MAX_PASSWORD_LENGTH) == 0)
 		return 1;
 	else
 		return 0;