Copied tools directory from trunk. Here the original versions will be checked in, so that we can update them and merge the changes back in.

1 files changed, 300 insertions, 0 deletions

diff --git a/tools/plink/raw.c b/tools/plink/raw.c
new file mode 100644
index 000000000..ea51d74a7
--- /dev/null
+++ b/tools/plink/raw.c
@@ -0,0 +1,300 @@
+/*

+ * "Raw" backend.

+ */

+

+#include <stdio.h>

+#include <stdlib.h>

+

+#include "putty.h"

+

+#ifndef FALSE

+#define FALSE 0

+#endif

+#ifndef TRUE

+#define TRUE 1

+#endif

+

+#define RAW_MAX_BACKLOG 4096

+

+typedef struct raw_backend_data {

+    const struct plug_function_table *fn;

+    /* the above field _must_ be first in the structure */

+

+    Socket s;

+    int bufsize;

+    void *frontend;

+} *Raw;

+

+static void raw_size(void *handle, int width, int height);

+

+static void c_write(Raw raw, char *buf, int len)

+{

+    int backlog = from_backend(raw->frontend, 0, buf, len);

+    sk_set_frozen(raw->s, backlog > RAW_MAX_BACKLOG);

+}

+

+static void raw_log(Plug plug, int type, SockAddr addr, int port,

+		    const char *error_msg, int error_code)

+{

+    Raw raw = (Raw) plug;

+    char addrbuf[256], *msg;

+

+    sk_getaddr(addr, addrbuf, lenof(addrbuf));

+

+    if (type == 0)

+	msg = dupprintf("Connecting to %s port %d", addrbuf, port);

+    else

+	msg = dupprintf("Failed to connect to %s: %s", addrbuf, error_msg);

+

+    logevent(raw->frontend, msg);

+}

+

+static int raw_closing(Plug plug, const char *error_msg, int error_code,

+		       int calling_back)

+{

+    Raw raw = (Raw) plug;

+

+    if (raw->s) {

+        sk_close(raw->s);

+        raw->s = NULL;

+	notify_remote_exit(raw->frontend);

+    }

+    if (error_msg) {

+	/* A socket error has occurred. */

+	logevent(raw->frontend, error_msg);

+	connection_fatal(raw->frontend, "%s", error_msg);

+    }				       /* Otherwise, the remote side closed the connection normally. */

+    return 0;

+}

+

+static int raw_receive(Plug plug, int urgent, char *data, int len)

+{

+    Raw raw = (Raw) plug;

+    c_write(raw, data, len);

+    return 1;

+}

+

+static void raw_sent(Plug plug, int bufsize)

+{

+    Raw raw = (Raw) plug;

+    raw->bufsize = bufsize;

+}

+

+/*

+ * Called to set up the raw connection.

+ * 

+ * Returns an error message, or NULL on success.

+ *

+ * Also places the canonical host name into `realhost'. It must be

+ * freed by the caller.

+ */

+static const char *raw_init(void *frontend_handle, void **backend_handle,

+			    Config *cfg,

+			    char *host, int port, char **realhost, int nodelay,

+			    int keepalive)

+{

+    static const struct plug_function_table fn_table = {

+	raw_log,

+	raw_closing,

+	raw_receive,

+	raw_sent

+    };

+    SockAddr addr;

+    const char *err;

+    Raw raw;

+

+    raw = snew(struct raw_backend_data);

+    raw->fn = &fn_table;

+    raw->s = NULL;

+    *backend_handle = raw;

+

+    raw->frontend = frontend_handle;

+

+    /*

+     * Try to find host.

+     */

+    {

+	char *buf;

+	buf = dupprintf("Looking up host \"%s\"%s", host,

+			(cfg->addressfamily == ADDRTYPE_IPV4 ? " (IPv4)" :

+			 (cfg->addressfamily == ADDRTYPE_IPV6 ? " (IPv6)" :

+			  "")));

+	logevent(raw->frontend, buf);

+	sfree(buf);

+    }

+    addr = name_lookup(host, port, realhost, cfg, cfg->addressfamily);

+    if ((err = sk_addr_error(addr)) != NULL) {

+	sk_addr_free(addr);

+	return err;

+    }

+

+    if (port < 0)

+	port = 23;		       /* default telnet port */

+

+    /*

+     * Open socket.

+     */

+    raw->s = new_connection(addr, *realhost, port, 0, 1, nodelay, keepalive,

+			    (Plug) raw, cfg);

+    if ((err = sk_socket_error(raw->s)) != NULL)

+	return err;

+

+    if (*cfg->loghost) {

+	char *colon;

+

+	sfree(*realhost);

+	*realhost = dupstr(cfg->loghost);

+	colon = strrchr(*realhost, ':');

+	if (colon) {

+	    /*

+	     * FIXME: if we ever update this aspect of ssh.c for

+	     * IPv6 literal management, this should change in line

+	     * with it.

+	     */

+	    *colon++ = '\0';

+	}

+    }

+

+    return NULL;

+}

+

+static void raw_free(void *handle)

+{

+    Raw raw = (Raw) handle;

+

+    if (raw->s)

+	sk_close(raw->s);

+    sfree(raw);

+}

+

+/*

+ * Stub routine (we don't have any need to reconfigure this backend).

+ */

+static void raw_reconfig(void *handle, Config *cfg)

+{

+}

+

+/*

+ * Called to send data down the raw connection.

+ */

+static int raw_send(void *handle, char *buf, int len)

+{

+    Raw raw = (Raw) handle;

+

+    if (raw->s == NULL)

+	return 0;

+

+    raw->bufsize = sk_write(raw->s, buf, len);

+

+    return raw->bufsize;

+}

+

+/*

+ * Called to query the current socket sendability status.

+ */

+static int raw_sendbuffer(void *handle)

+{

+    Raw raw = (Raw) handle;

+    return raw->bufsize;

+}

+

+/*

+ * Called to set the size of the window

+ */

+static void raw_size(void *handle, int width, int height)

+{

+    /* Do nothing! */

+    return;

+}

+

+/*

+ * Send raw special codes.

+ */

+static void raw_special(void *handle, Telnet_Special code)

+{

+    /* Do nothing! */

+    return;

+}

+

+/*

+ * Return a list of the special codes that make sense in this

+ * protocol.

+ */

+static const struct telnet_special *raw_get_specials(void *handle)

+{

+    return NULL;

+}

+

+static int raw_connected(void *handle)

+{

+    Raw raw = (Raw) handle;

+    return raw->s != NULL;

+}

+

+static int raw_sendok(void *handle)

+{

+    return 1;

+}

+

+static void raw_unthrottle(void *handle, int backlog)

+{

+    Raw raw = (Raw) handle;

+    sk_set_frozen(raw->s, backlog > RAW_MAX_BACKLOG);

+}

+

+static int raw_ldisc(void *handle, int option)

+{

+    if (option == LD_EDIT || option == LD_ECHO)

+	return 1;

+    return 0;

+}

+

+static void raw_provide_ldisc(void *handle, void *ldisc)

+{

+    /* This is a stub. */

+}

+

+static void raw_provide_logctx(void *handle, void *logctx)

+{

+    /* This is a stub. */

+}

+

+static int raw_exitcode(void *handle)

+{

+    Raw raw = (Raw) handle;

+    if (raw->s != NULL)

+        return -1;                     /* still connected */

+    else

+        /* Exit codes are a meaningless concept in the Raw protocol */

+        return 0;

+}

+

+/*

+ * cfg_info for Raw does nothing at all.

+ */

+static int raw_cfg_info(void *handle)

+{

+    return 0;

+}

+

+Backend raw_backend = {

+    raw_init,

+    raw_free,

+    raw_reconfig,

+    raw_send,

+    raw_sendbuffer,

+    raw_size,

+    raw_special,

+    raw_get_specials,

+    raw_connected,

+    raw_exitcode,

+    raw_sendok,

+    raw_ldisc,

+    raw_provide_ldisc,

+    raw_provide_logctx,

+    raw_unthrottle,

+    raw_cfg_info,

+    "raw",

+    PROT_RAW,

+    0

+};