diff options
Diffstat (limited to 'tools/plink/rlogin.c')
| -rw-r--r-- | tools/plink/rlogin.c | 373 |
1 files changed, 0 insertions, 373 deletions
diff --git a/tools/plink/rlogin.c b/tools/plink/rlogin.c deleted file mode 100644 index b514d7a5b..000000000 --- a/tools/plink/rlogin.c +++ /dev/null @@ -1,373 +0,0 @@ -/*
- * Rlogin backend.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <ctype.h>
-
-#include "putty.h"
-
-#ifndef FALSE
-#define FALSE 0
-#endif
-#ifndef TRUE
-#define TRUE 1
-#endif
-
-#define RLOGIN_MAX_BACKLOG 4096
-
-typedef struct rlogin_tag {
- const struct plug_function_table *fn;
- /* the above field _must_ be first in the structure */
-
- Socket s;
- int bufsize;
- int firstbyte;
- int cansize;
- int term_width, term_height;
- void *frontend;
-} *Rlogin;
-
-static void rlogin_size(void *handle, int width, int height);
-
-static void c_write(Rlogin rlogin, char *buf, int len)
-{
- int backlog = from_backend(rlogin->frontend, 0, buf, len);
- sk_set_frozen(rlogin->s, backlog > RLOGIN_MAX_BACKLOG);
-}
-
-static void rlogin_log(Plug plug, int type, SockAddr addr, int port,
- const char *error_msg, int error_code)
-{
- Rlogin rlogin = (Rlogin) 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(rlogin->frontend, msg);
-}
-
-static int rlogin_closing(Plug plug, const char *error_msg, int error_code,
- int calling_back)
-{
- Rlogin rlogin = (Rlogin) plug;
- if (rlogin->s) {
- sk_close(rlogin->s);
- rlogin->s = NULL;
- notify_remote_exit(rlogin->frontend);
- }
- if (error_msg) {
- /* A socket error has occurred. */
- logevent(rlogin->frontend, error_msg);
- connection_fatal(rlogin->frontend, "%s", error_msg);
- } /* Otherwise, the remote side closed the connection normally. */
- return 0;
-}
-
-static int rlogin_receive(Plug plug, int urgent, char *data, int len)
-{
- Rlogin rlogin = (Rlogin) plug;
- if (urgent == 2) {
- char c;
-
- c = *data++;
- len--;
- if (c == '\x80') {
- rlogin->cansize = 1;
- rlogin_size(rlogin, rlogin->term_width, rlogin->term_height);
- }
- /*
- * We should flush everything (aka Telnet SYNCH) if we see
- * 0x02, and we should turn off and on _local_ flow control
- * on 0x10 and 0x20 respectively. I'm not convinced it's
- * worth it...
- */
- } else {
- /*
- * Main rlogin protocol. This is really simple: the first
- * byte is expected to be NULL and is ignored, and the rest
- * is printed.
- */
- if (rlogin->firstbyte) {
- if (data[0] == '\0') {
- data++;
- len--;
- }
- rlogin->firstbyte = 0;
- }
- if (len > 0)
- c_write(rlogin, data, len);
- }
- return 1;
-}
-
-static void rlogin_sent(Plug plug, int bufsize)
-{
- Rlogin rlogin = (Rlogin) plug;
- rlogin->bufsize = bufsize;
-}
-
-/*
- * Called to set up the rlogin 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 *rlogin_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 = {
- rlogin_log,
- rlogin_closing,
- rlogin_receive,
- rlogin_sent
- };
- SockAddr addr;
- const char *err;
- Rlogin rlogin;
-
- rlogin = snew(struct rlogin_tag);
- rlogin->fn = &fn_table;
- rlogin->s = NULL;
- rlogin->frontend = frontend_handle;
- rlogin->term_width = cfg->width;
- rlogin->term_height = cfg->height;
- rlogin->firstbyte = 1;
- rlogin->cansize = 0;
- *backend_handle = rlogin;
-
- /*
- * 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(rlogin->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 = 513; /* default rlogin port */
-
- /*
- * Open socket.
- */
- rlogin->s = new_connection(addr, *realhost, port, 1, 0,
- nodelay, keepalive, (Plug) rlogin, cfg);
- if ((err = sk_socket_error(rlogin->s)) != NULL)
- return err;
-
- /*
- * Send local username, remote username, terminal/speed
- */
-
- {
- char z = 0;
- char *p;
- char ruser[sizeof(cfg->username)];
- (void) get_remote_username(cfg, ruser, sizeof(ruser));
- sk_write(rlogin->s, &z, 1);
- sk_write(rlogin->s, cfg->localusername,
- strlen(cfg->localusername));
- sk_write(rlogin->s, &z, 1);
- sk_write(rlogin->s, ruser,
- strlen(ruser));
- sk_write(rlogin->s, &z, 1);
- sk_write(rlogin->s, cfg->termtype,
- strlen(cfg->termtype));
- sk_write(rlogin->s, "/", 1);
- for (p = cfg->termspeed; isdigit((unsigned char)*p); p++) continue;
- sk_write(rlogin->s, cfg->termspeed, p - cfg->termspeed);
- rlogin->bufsize = sk_write(rlogin->s, &z, 1);
- }
-
- 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 rlogin_free(void *handle)
-{
- Rlogin rlogin = (Rlogin) handle;
-
- if (rlogin->s)
- sk_close(rlogin->s);
- sfree(rlogin);
-}
-
-/*
- * Stub routine (we don't have any need to reconfigure this backend).
- */
-static void rlogin_reconfig(void *handle, Config *cfg)
-{
-}
-
-/*
- * Called to send data down the rlogin connection.
- */
-static int rlogin_send(void *handle, char *buf, int len)
-{
- Rlogin rlogin = (Rlogin) handle;
-
- if (rlogin->s == NULL)
- return 0;
-
- rlogin->bufsize = sk_write(rlogin->s, buf, len);
-
- return rlogin->bufsize;
-}
-
-/*
- * Called to query the current socket sendability status.
- */
-static int rlogin_sendbuffer(void *handle)
-{
- Rlogin rlogin = (Rlogin) handle;
- return rlogin->bufsize;
-}
-
-/*
- * Called to set the size of the window
- */
-static void rlogin_size(void *handle, int width, int height)
-{
- Rlogin rlogin = (Rlogin) handle;
- char b[12] = { '\xFF', '\xFF', 0x73, 0x73, 0, 0, 0, 0, 0, 0, 0, 0 };
-
- rlogin->term_width = width;
- rlogin->term_height = height;
-
- if (rlogin->s == NULL || !rlogin->cansize)
- return;
-
- b[6] = rlogin->term_width >> 8;
- b[7] = rlogin->term_width & 0xFF;
- b[4] = rlogin->term_height >> 8;
- b[5] = rlogin->term_height & 0xFF;
- rlogin->bufsize = sk_write(rlogin->s, b, 12);
- return;
-}
-
-/*
- * Send rlogin special codes.
- */
-static void rlogin_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 *rlogin_get_specials(void *handle)
-{
- return NULL;
-}
-
-static int rlogin_connected(void *handle)
-{
- Rlogin rlogin = (Rlogin) handle;
- return rlogin->s != NULL;
-}
-
-static int rlogin_sendok(void *handle)
-{
- /* Rlogin rlogin = (Rlogin) handle; */
- return 1;
-}
-
-static void rlogin_unthrottle(void *handle, int backlog)
-{
- Rlogin rlogin = (Rlogin) handle;
- sk_set_frozen(rlogin->s, backlog > RLOGIN_MAX_BACKLOG);
-}
-
-static int rlogin_ldisc(void *handle, int option)
-{
- /* Rlogin rlogin = (Rlogin) handle; */
- return 0;
-}
-
-static void rlogin_provide_ldisc(void *handle, void *ldisc)
-{
- /* This is a stub. */
-}
-
-static void rlogin_provide_logctx(void *handle, void *logctx)
-{
- /* This is a stub. */
-}
-
-static int rlogin_exitcode(void *handle)
-{
- Rlogin rlogin = (Rlogin) handle;
- if (rlogin->s != NULL)
- return -1; /* still connected */
- else
- /* If we ever implement RSH, we'll probably need to do this properly */
- return 0;
-}
-
-/*
- * cfg_info for rlogin does nothing at all.
- */
-static int rlogin_cfg_info(void *handle)
-{
- return 0;
-}
-
-Backend rlogin_backend = {
- rlogin_init,
- rlogin_free,
- rlogin_reconfig,
- rlogin_send,
- rlogin_sendbuffer,
- rlogin_size,
- rlogin_special,
- rlogin_get_specials,
- rlogin_connected,
- rlogin_exitcode,
- rlogin_sendok,
- rlogin_ldisc,
- rlogin_provide_ldisc,
- rlogin_provide_logctx,
- rlogin_unthrottle,
- rlogin_cfg_info,
- "rlogin",
- PROT_RLOGIN,
- 513
-};
|