More robust baseconv.

[doldaconnect.git] / config / baseconv.c

diff --git a/config/baseconv.c b/config/baseconv.c
index 360daad..d27a8cf 100644 (file)
--- a/config/baseconv.c
+++ b/config/baseconv.c
@@ -14,6 +14,11 @@ int main(int argc, char **argv)
     char *(*decfn)(char *, size_t *);
     char *(*encfn)(char *, size_t);
     
+    if(argc < 3) {
+       fprintf(stderr, "usage: baseconv [4568] [4568]\n");
+       fprintf(stderr, "\tenter data on stdin\n");
+       exit(1);
+    }
     data = 0;
     if(!strcmp(argv[1], "4")) {
        decfn = hexdecode;