--- /dev/null
+diff -Naur libdkim.orig/src/libdkimtest.cpp libdkim/src/libdkimtest.cpp
+--- libdkim.orig/src/libdkimtest.cpp 2009-03-13 16:17:45.000000000 -0500
++++ libdkim/src/libdkimtest.cpp 2009-03-13 16:26:02.000000000 -0500
+@@ -55,8 +55,23 @@
+ return 0;\r
+ }\r
+ \r
++void usage()\r
++{\r
+ \r
+-\r
++ printf( "usage: libdkimtest [-b<allman|ietf|both>] [-c<r|s|t|u>] [-d<domain>] [-l] [-h] [-i<you@yourdomain.com>] [-q] [-s] [-t] [-v] [-x<expire time>] [-z<hash>] <msgfile> <privkeyfile> <outfile>\n");\r
++ printf( "-b<standard> allman , ietf or both\n");\r
++ printf( "-c<canonicalization> r for relaxed [DEFAULT], s - simple, t relaxed/simple, u - simple/relaxed\n");\r
++ printf( "-d<domain> the domain tag, if not provided it will be determined from the sender/from header\n");\r
++ printf( "-l include body length tag\n");\r
++ printf( "-h this help\n");\r
++ printf( "-i<identity> the identity, if not provided it will not be included\n");\r
++ printf( "-s sign the message\n");\r
++ printf( "-t include a timestamp tag\n");\r
++ printf( "-v verify the message\n");\r
++ printf( "-x<expire_time> the expire time in seconds since epoch ( DEFAULT = current time + 604800)\n\t if set to - then it will not be included");\r
++ printf( "-z<hash> 1 for sha1, 2 for sha256, 3 for both\n");\r
++ printf( "-y<selector> the selector tag DEFAULT=MDaemon\n");\r
++}\r
+ int main(int argc, char* argv[])\r
+ {\r
+ int n;\r
+@@ -77,7 +92,7 @@
+ time(&t);\r
+ \r
+ opts.nCanon = DKIM_SIGN_RELAXED;\r
+- opts.nIncludeBodyLengthTag = 1;\r
++ opts.nIncludeBodyLengthTag = 0;\r
+ opts.nIncludeQueryMethod = 0;\r
+ opts.nIncludeTimeStamp = 0;\r
+ opts.expireTime = t + 604800; // expires in 1 week\r
+@@ -92,6 +107,11 @@
+ int nArgParseState = 0;\r
+ bool bSign = true;\r
+ \r
++ if(argc<2){\r
++ usage();\r
++ exit(1);\r
++ }\r
++\r
+ for( n = 1; n < argc; n++ )\r
+ {\r
+ if( argv[n][0] == '-' && strlen(argv[n]) > 1 )\r
+@@ -121,14 +141,16 @@
+ }\r
+ break;\r
+ \r
+-\r
++ case 'd': \r
++ strncpy(opts.szDomain,(const char*)(argv[n]+2),sizeof(opts.szDomain)-1);\r
++ break;\r
+ case 'l': // body length tag\r
+ opts.nIncludeBodyLengthTag = 1;\r
+ break;\r
+ \r
+ \r
+ case 'h':\r
+- printf( "usage: \n" );\r
++ usage(); \r
+ return 0;\r
+ \r
+ case 'i': // identity \r
+@@ -138,7 +160,7 @@
+ }\r
+ else\r
+ {\r
+- strcpy( opts.szIdentity, argv[n] + 2 );\r
++ strncpy( opts.szIdentity, argv[n] + 2,sizeof(opts.szIdentity)-1 );\r
+ }\r
+ break;\r
+ \r
+@@ -169,6 +191,9 @@
+ }\r
+ break;\r
+ \r
++ case 'y':\r
++ strncpy( opts.szSelector, argv[n]+2, sizeof(opts.szSelector)-1);\r
++ break;\r
+ \r
+ case 'z': // sign w/ sha1, sha256 or both \r
+ opts.nHash = atoi( &argv[n][2] );\r