Create libosmovty as library from OpenBSC VTY functions
diff --git a/include/osmocom/vty/vty.h b/include/osmocom/vty/vty.h
new file mode 100644
index 0000000..f82ada1
--- /dev/null
+++ b/include/osmocom/vty/vty.h
@@ -0,0 +1,151 @@
+#ifndef _VTY_H
+#define _VTY_H
+
+#include <stdio.h>
+#include <stdarg.h>
+
+/* GCC have printf type attribute check. */
+#ifdef __GNUC__
+#define VTY_PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
+#else
+#define VTY_PRINTF_ATTRIBUTE(a,b)
+#endif /* __GNUC__ */
+
+/* Does the I/O error indicate that the operation should be retried later? */
+#define ERRNO_IO_RETRY(EN) \
+ (((EN) == EAGAIN) || ((EN) == EWOULDBLOCK) || ((EN) == EINTR))
+
+/* Vty read buffer size. */
+#define VTY_READ_BUFSIZ 512
+
+#define VTY_BUFSIZ 512
+#define VTY_MAXHIST 20
+
+/* Vty events */
+enum event {
+ VTY_SERV,
+ VTY_READ,
+ VTY_WRITE,
+ VTY_CLOSED,
+ VTY_TIMEOUT_RESET,
+#ifdef VTYSH
+ VTYSH_SERV,
+ VTYSH_READ,
+ VTYSH_WRITE
+#endif /* VTYSH */
+};
+
+struct vty {
+ FILE *file;
+
+ /* private data, specified by creator */
+ void *priv;
+
+ /* File descripter of this vty. */
+ int fd;
+
+ /* Is this vty connect to file or not */
+ enum { VTY_TERM, VTY_FILE, VTY_SHELL, VTY_SHELL_SERV } type;
+
+ /* Node status of this vty */
+ int node;
+
+ /* Failure count */
+ int fail;
+
+ /* Output buffer. */
+ struct buffer *obuf;
+
+ /* Command input buffer */
+ char *buf;
+
+ /* Command cursor point */
+ int cp;
+
+ /* Command length */
+ int length;
+
+ /* Command max length. */
+ int max;
+
+ /* Histry of command */
+ char *hist[VTY_MAXHIST];
+
+ /* History lookup current point */
+ int hp;
+
+ /* History insert end point */
+ int hindex;
+
+ /* For current referencing point of interface, route-map,
+ access-list etc... */
+ void *index;
+
+ /* For multiple level index treatment such as key chain and key. */
+ void *index_sub;
+
+ /* For escape character. */
+ unsigned char escape;
+
+ /* Current vty status. */
+ enum { VTY_NORMAL, VTY_CLOSE, VTY_MORE, VTY_MORELINE } status;
+
+ /* IAC handling: was the last character received the IAC
+ * (interpret-as-command) escape character (and therefore the next
+ * character will be the command code)? Refer to Telnet RFC 854. */
+ unsigned char iac;
+
+ /* IAC SB (option subnegotiation) handling */
+ unsigned char iac_sb_in_progress;
+ /* At the moment, we care only about the NAWS (window size) negotiation,
+ * and that requires just a 5-character buffer (RFC 1073):
+ * <NAWS char> <16-bit width> <16-bit height> */
+#define TELNET_NAWS_SB_LEN 5
+ unsigned char sb_buf[TELNET_NAWS_SB_LEN];
+ /* How many subnegotiation characters have we received? We just drop
+ * those that do not fit in the buffer. */
+ size_t sb_len;
+
+ /* Window width/height. */
+ int width;
+ int height;
+
+ /* Configure lines. */
+ int lines;
+
+ int monitor;
+
+ /* In configure mode. */
+ int config;
+};
+
+/* Small macro to determine newline is newline only or linefeed needed. */
+#define VTY_NEWLINE ((vty->type == VTY_TERM) ? "\r\n" : "\n")
+
+static inline char *vty_newline(struct vty *vty)
+{
+ return VTY_NEWLINE;
+}
+
+/* Prototypes. */
+void vty_init(const char *name, const char *version, const char *copyright);
+int vty_read_config_file(const char *file_name, void *priv);
+void vty_init_vtysh (void);
+void vty_reset (void);
+struct vty *vty_new (void);
+struct vty *vty_create (int vty_sock, void *priv);
+int vty_out (struct vty *, const char *, ...) VTY_PRINTF_ATTRIBUTE(2, 3);
+int vty_out_newline(struct vty *);
+int vty_read(struct vty *vty);
+//void vty_time_print (struct vty *, int);
+void vty_close (struct vty *);
+char *vty_get_cwd (void);
+void vty_log (const char *level, const char *proto, const char *fmt, va_list);
+int vty_config_lock (struct vty *);
+int vty_config_unlock (struct vty *);
+int vty_shell (struct vty *);
+int vty_shell_serv (struct vty *);
+void vty_hello (struct vty *);
+
+void *tall_vty_ctx;
+#endif