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Diffstat (limited to 'tools/plink/rlogin.c')
-rw-r--r--tools/plink/rlogin.c125
1 files changed, 90 insertions, 35 deletions
diff --git a/tools/plink/rlogin.c b/tools/plink/rlogin.c
index b514d7a5b..29ae5fd14 100644
--- a/tools/plink/rlogin.c
+++ b/tools/plink/rlogin.c
@@ -27,6 +27,11 @@ typedef struct rlogin_tag {
int cansize;
int term_width, term_height;
void *frontend;
+
+ Conf *conf;
+
+ /* In case we need to read a username from the terminal before starting */
+ prompts_t *prompt;
} *Rlogin;
static void rlogin_size(void *handle, int width, int height);
@@ -57,6 +62,13 @@ static int rlogin_closing(Plug plug, const char *error_msg, int error_code,
int calling_back)
{
Rlogin rlogin = (Rlogin) plug;
+
+ /*
+ * We don't implement independent EOF in each direction for Telnet
+ * connections; as soon as we get word that the remote side has
+ * sent us EOF, we wind up the whole connection.
+ */
+
if (rlogin->s) {
sk_close(rlogin->s);
rlogin->s = NULL;
@@ -113,6 +125,27 @@ static void rlogin_sent(Plug plug, int bufsize)
rlogin->bufsize = bufsize;
}
+static void rlogin_startup(Rlogin rlogin, const char *ruser)
+{
+ char z = 0;
+ char *p;
+
+ sk_write(rlogin->s, &z, 1);
+ p = conf_get_str(rlogin->conf, CONF_localusername);
+ sk_write(rlogin->s, p, strlen(p));
+ sk_write(rlogin->s, &z, 1);
+ sk_write(rlogin->s, ruser, strlen(ruser));
+ sk_write(rlogin->s, &z, 1);
+ p = conf_get_str(rlogin->conf, CONF_termtype);
+ sk_write(rlogin->s, p, strlen(p));
+ sk_write(rlogin->s, "/", 1);
+ p = conf_get_str(rlogin->conf, CONF_termspeed);
+ sk_write(rlogin->s, p, strspn(p, "0123456789"));
+ rlogin->bufsize = sk_write(rlogin->s, &z, 1);
+
+ rlogin->prompt = NULL;
+}
+
/*
* Called to set up the rlogin connection.
*
@@ -122,7 +155,7 @@ static void rlogin_sent(Plug plug, int bufsize)
* freed by the caller.
*/
static const char *rlogin_init(void *frontend_handle, void **backend_handle,
- Config *cfg,
+ Conf *conf,
char *host, int port, char **realhost,
int nodelay, int keepalive)
{
@@ -135,30 +168,36 @@ static const char *rlogin_init(void *frontend_handle, void **backend_handle,
SockAddr addr;
const char *err;
Rlogin rlogin;
+ char *ruser;
+ int addressfamily;
+ char *loghost;
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->term_width = conf_get_int(conf, CONF_width);
+ rlogin->term_height = conf_get_int(conf, CONF_height);
rlogin->firstbyte = 1;
rlogin->cansize = 0;
+ rlogin->prompt = NULL;
+ rlogin->conf = conf_copy(conf);
*backend_handle = rlogin;
+ addressfamily = conf_get_int(conf, CONF_addressfamily);
/*
* Try to find host.
*/
{
char *buf;
buf = dupprintf("Looking up host \"%s\"%s", host,
- (cfg->addressfamily == ADDRTYPE_IPV4 ? " (IPv4)" :
- (cfg->addressfamily == ADDRTYPE_IPV6 ? " (IPv6)" :
+ (addressfamily == ADDRTYPE_IPV4 ? " (IPv4)" :
+ (addressfamily == ADDRTYPE_IPV6 ? " (IPv6)" :
"")));
logevent(rlogin->frontend, buf);
sfree(buf);
}
- addr = name_lookup(host, port, realhost, cfg, cfg->addressfamily);
+ addr = name_lookup(host, port, realhost, conf, addressfamily);
if ((err = sk_addr_error(addr)) != NULL) {
sk_addr_free(addr);
return err;
@@ -171,39 +210,16 @@ static const char *rlogin_init(void *frontend_handle, void **backend_handle,
* Open socket.
*/
rlogin->s = new_connection(addr, *realhost, port, 1, 0,
- nodelay, keepalive, (Plug) rlogin, cfg);
+ nodelay, keepalive, (Plug) rlogin, conf);
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) {
+ loghost = conf_get_str(conf, CONF_loghost);
+ if (*loghost) {
char *colon;
sfree(*realhost);
- *realhost = dupstr(cfg->loghost);
+ *realhost = dupstr(loghost);
colon = strrchr(*realhost, ':');
if (colon) {
/*
@@ -215,6 +231,28 @@ static const char *rlogin_init(void *frontend_handle, void **backend_handle,
}
}
+ /*
+ * Send local username, remote username, terminal type and
+ * terminal speed - unless we don't have the remote username yet,
+ * in which case we prompt for it and may end up deferring doing
+ * anything else until the local prompt mechanism returns.
+ */
+ if ((ruser = get_remote_username(conf)) == NULL) {
+ rlogin_startup(rlogin, ruser);
+ sfree(ruser);
+ } else {
+ int ret;
+
+ rlogin->prompt = new_prompts(rlogin->frontend);
+ rlogin->prompt->to_server = TRUE;
+ rlogin->prompt->name = dupstr("Rlogin login name");
+ add_prompt(rlogin->prompt, dupstr("rlogin username: "), TRUE);
+ ret = get_userpass_input(rlogin->prompt, NULL, 0);
+ if (ret >= 0) {
+ rlogin_startup(rlogin, rlogin->prompt->prompts[0]->result);
+ }
+ }
+
return NULL;
}
@@ -222,15 +260,18 @@ static void rlogin_free(void *handle)
{
Rlogin rlogin = (Rlogin) handle;
+ if (rlogin->prompt)
+ free_prompts(rlogin->prompt);
if (rlogin->s)
sk_close(rlogin->s);
+ conf_free(rlogin->conf);
sfree(rlogin);
}
/*
* Stub routine (we don't have any need to reconfigure this backend).
*/
-static void rlogin_reconfig(void *handle, Config *cfg)
+static void rlogin_reconfig(void *handle, Conf *conf)
{
}
@@ -244,7 +285,21 @@ static int rlogin_send(void *handle, char *buf, int len)
if (rlogin->s == NULL)
return 0;
- rlogin->bufsize = sk_write(rlogin->s, buf, len);
+ if (rlogin->prompt) {
+ /*
+ * We're still prompting for a username, and aren't talking
+ * directly to the network connection yet.
+ */
+ int ret = get_userpass_input(rlogin->prompt,
+ (unsigned char *)buf, len);
+ if (ret >= 0) {
+ rlogin_startup(rlogin, rlogin->prompt->prompts[0]->result);
+ /* that nulls out rlogin->prompt, so then we'll start sending
+ * data down the wire in the obvious way */
+ }
+ } else {
+ rlogin->bufsize = sk_write(rlogin->s, buf, len);
+ }
return rlogin->bufsize;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-09 06:28:52 +0000