1 files changed, 56 insertions, 0 deletions
diff --git a/com32/libupload/upload_backend.h b/com32/libupload/upload_backend.h
new file mode 100644
index 00000000..7ea03e46
--- /dev/null
+++ b/com32/libupload/upload_backend.h
@@ -0,0 +1,56 @@
+#ifndef BACKEND_H
+#define BACKEND_H
+
+#include <stddef.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <zlib.h>
+#include "serial.h"
+#include "tftp.h"
+
+/* Backend flags */
+#define BE_NEEDLEN	0x01
+
+struct upload_backend {
+    const char *name;
+    const char *helpmsg;
+    int minargs;
+
+    size_t dbytes;
+    size_t zbytes;
+    const char **argv;
+
+    uint32_t now;
+
+    int (*write)(struct upload_backend *);
+
+    z_stream zstream;
+    char *outbuf;
+    size_t alloc;
+};
+
+/* zout.c */
+int init_data(struct upload_backend *be, const char *argv[]);
+int write_data(struct upload_backend *be, const void *buf, size_t len);
+int flush_data(struct upload_backend *be);
+
+/* cpio.c */
+#define cpio_init init_data
+int cpio_hdr(struct upload_backend *be, uint32_t mode, size_t datalen,
+	     const char *filename);
+int cpio_mkdir(struct upload_backend *be, const char *filename);
+int cpio_writefile(struct upload_backend *be, const char *filename,
+		   const void *data, size_t len);
+int cpio_close(struct upload_backend *be);
+#define MODE_FILE	0100644
+#define MODE_DIR	0040755
+
+/* backends.c */
+struct upload_backend *get_upload_backend(const char *name);
+
+/* backends */
+extern struct upload_backend upload_tftp;
+extern struct upload_backend upload_ymodem;
+extern struct upload_backend upload_srec;
+
+#endif /* BACKEND_H */