Proof-of-concept FTP implementation

src/include/gpxe/ftp.h

@@ -0,0 +1,68 @@
+#ifndef _GPXE_FTP_H
+#define _GPXE_FTP_H
+
+/** @file
+ *
+ * File transfer protocol
+ *
+ */
+
+#include <stdint.h>
+#include <gpxe/tcp.h>
+
+enum ftp_state {
+	FTP_CONNECT = 0,
+	FTP_USER,
+	FTP_PASS,
+	FTP_TYPE,
+	FTP_PASV,
+	FTP_RETR,
+	FTP_QUIT,
+	FTP_DONE,
+};
+
+/**
+ * An FTP request
+ *
+ */
+struct ftp_request {
+	/** TCP connection for this request */
+	struct tcp_connection tcp;
+	/** File to download */
+	const char *filename;
+	/** Callback function
+	 *
+	 * @v data	Received data
+	 * @v len	Length of received data
+	 *
+	 * This function is called for all data received from the
+	 * remote server.
+	 */
+	void ( *callback ) ( char *data, size_t len );
+	/** Completion indicator
+	 *
+	 * This will be set to a non-zero value when the transfer is
+	 * complete.  A negative value indicates an error.
+	 */
+	int complete;
+
+	/** Current state */
+	enum ftp_state state;
+	/** Amount of current message already transmitted */
+	size_t already_sent;
+	/** Buffer to be filled with data received via the control channel */
+	char *recvbuf;
+	/** Remaining size of recvbuf */
+	size_t recvsize;
+	/** FTP status code, as text */
+	char status_text[4];
+	/** Passive-mode parameters, as text */
+	char passive_text[24]; /* "aaa,bbb,ccc,ddd,eee,fff" */
+
+	/** TCP connection for the data channel */
+	struct tcp_connection tcp_data;
+};
+
+extern void ftp_connect ( struct ftp_request *ftp );
+
+#endif