1 files changed, 78 insertions, 0 deletions
diff --git a/fuzz-common.c b/fuzz-common.c
new file mode 100644
index 0000000..cc6c125
--- /dev/null
+++ b/fuzz-common.c
@@ -0,0 +1,78 @@
+#include "includes.h"
+
+#ifdef DROPBEAR_FUZZ
+
+#include "includes.h"
+#include "fuzz.h"
+#include "dbutil.h"
+#include "runopts.h"
+
+struct dropbear_fuzz_options fuzz;
+
+static void load_fixed_hostkeys(void);
+
+static void common_setup_fuzzer(void) {
+    fuzz.fuzzing = 1;
+}
+
+void svr_setup_fuzzer(void) {
+    struct passwd *pw;
+
+    common_setup_fuzzer();
+
+    char *argv[] = { 
+        "-E", 
+    };
+
+    int argc = sizeof(argv) / sizeof(*argv);
+    svr_getopts(argc, argv);
+
+    /* user lookups might be slow, cache it */
+    pw = getpwuid(getuid());
+    dropbear_assert(pw);
+    fuzz.pw_name = m_strdup(pw->pw_name);
+    fuzz.pw_dir = m_strdup(pw->pw_dir);
+    fuzz.pw_shell = m_strdup(pw->pw_shell);
+    fuzz.pw_passwd = m_strdup("!!zzznope");
+
+    load_fixed_hostkeys();
+}
+
+static void load_fixed_hostkeys(void) {
+#include "fuzz-hostkeys.c"   
+
+    buffer *b = buf_new(3000);
+    enum signkey_type type;
+
+    TRACE(("load fixed hostkeys"))
+
+    svr_opts.hostkey = new_sign_key();
+
+    buf_setlen(b, 0);
+    buf_putbytes(b, keyr, keyr_len);
+    buf_setpos(b, 0);
+    type = DROPBEAR_SIGNKEY_RSA;
+    if (buf_get_priv_key(b, svr_opts.hostkey, &type) == DROPBEAR_FAILURE) {
+        dropbear_exit("failed fixed rsa hostkey");
+    }
+
+    buf_setlen(b, 0);
+    buf_putbytes(b, keyd, keyd_len);
+    buf_setpos(b, 0);
+    type = DROPBEAR_SIGNKEY_DSS;
+    if (buf_get_priv_key(b, svr_opts.hostkey, &type) == DROPBEAR_FAILURE) {
+        dropbear_exit("failed fixed dss hostkey");
+    }
+
+    buf_setlen(b, 0);
+    buf_putbytes(b, keye, keye_len);
+    buf_setpos(b, 0);
+    type = DROPBEAR_SIGNKEY_ECDSA_NISTP256;
+    if (buf_get_priv_key(b, svr_opts.hostkey, &type) == DROPBEAR_FAILURE) {
+        dropbear_exit("failed fixed ecdsa hostkey");
+    }
+
+    buf_free(b);
+}
+
+#endif /* DROPBEAR_FUZZ */