static int
cygterm_accepting(Plug plug, OSSocket sock)
{
Local local = (Local)plug;
cygterm_debug("top");
local->s = sk_register(sock, plug);
sk_set_frozen(local->s, 0);
/* Reset terminal size */
cygterm_size(local, conf_get_int(local->conf, CONF_width), conf_get_int(local->conf, CONF_height));
cygterm_debug("OK");
return 0;
}
static int
cygterm_receive(Plug plug, int urgent, char *data, int len)
{
Local local = (Local)plug;
int backlog;
cygterm_debug("backend -> display %u", len);
// dmemdump(data, len);
backlog = from_backend(local->frontend, 0, data, len);
// dmemdumpl(data, len);
sk_set_frozen(local->s, backlog > CYGTERM_MAX_BACKLOG);
cygterm_debug("OK");
return 1;
}
static void
cygterm_free(void *handle)
{
Local local = handle;
cygterm_debug("top");
sfree(local);
}
static void
cygterm_reconfig(void *handle, Conf *conf)
{
Local local = handle;
cygterm_debug("top");
local->conf = conf;
}
static int
cygterm_connected(void *handle)
{
Local local = handle;
cygterm_debug("top");
return local->s != NULL;
}
static int
cygterm_sendbuffer(void *handle)
{
Local local = handle;
cygterm_debug("top");
return local->bufsize;
}
static void
cygterm_reconfig(void *handle, Config *cfg)
{
Local local = handle;
cygterm_debug("top");
local->cfg = *cfg;
}
static void
cygterm_unthrottle(void *handle, int backlog)
{
Local local = handle;
cygterm_debug("top");
sk_set_frozen(local->s, backlog > CYGTERM_MAX_BACKLOG);
}
static int
cygterm_exitcode(void *handle)
{
Local local = handle;
cygterm_debug("top");
return local->exitcode;
}
static int
cygterm_closing(Plug plug, const char *error_msg, int error_code, int calling_back)
{
Local local = (Local)plug;
cygterm_debug("top");
if (local->s) {
sk_close(local->s);
local->s = NULL;
}
/* check for errors from cthelper */
CloseHandle(local->ctl);
/* wait for cthelper */
if (local->pi.hProcess != INVALID_HANDLE_VALUE) {
if (WAIT_OBJECT_0 == WaitForSingleObject(local->pi.hProcess, 2000)) {
DWORD status;
GetExitCodeProcess(local->pi.hProcess, &status);
switch (status) {
case CthelperSuccess:
break;
case CthelperInvalidUsage:
case CthelperInvalidPort:
case CthelperConnectFailed:
local->exitcode = INT_MAX;
error_msg = "Internal error";
break;
case CthelperPtyforkFailure:
local->exitcode = INT_MAX;
error_msg = "Failed to allocate pseudoterminal";
break;
case CthelperExecFailure:
local->exitcode = INT_MAX;
error_msg = "Failed to execute command";
break;
}
}
}
/* this calls cygterm_exitcode() */
notify_remote_exit(local->frontend);
if (error_msg) {
cygterm_debug("error_msg: %s", error_msg);
connection_fatal(local->frontend, "%s", error_msg);
}
return 0;
}
static void
cygterm_size(void *handle, int width, int height)
{
Local local = handle;
cygterm_debug("top");
cygterm_debug("size=%d,%d (last=%d,%d)",
width, height, conf_get_int(local->conf, CONF_width), conf_get_int(local->conf, CONF_height));
conf_set_int(local->conf, CONF_width, width);
conf_set_int(local->conf, CONF_height, height);
if (local->s) {
DWORD n;
Message m;
m.size = MESSAGE_MIN + sizeof(m.msg);
m.type = MSG_RESIZE;
m.msg.resize.width = width;
m.msg.resize.height = height;
cygterm_debug("WriteFile %p %p:%u", local->ctl, &m, m.size);
WriteFile(local->ctl, (const char *)&m, m.size, &n, 0);
cygterm_debug("WriteFile returns %d");
}
}
static int
cygterm_ldisc(void *handle, int option)
{
Local local = handle;
cygterm_debug("cygterm_ldisc: %d", option);
switch (option) {
case LD_EDIT:
return local->editing;
case LD_ECHO:
return local->echoing;
}
return 0;
}
static int
cygterm_send(void *handle, char *buf, int len)
{
Local local = handle;
cygterm_debug("frontend -> pty %u", len);
// dmemdump(buf, len);
#if 0
/* HACK */
{
int i;
for (i = 0; i < len - 1; i++)
if (buf[i] == 033 && !(buf[i+1]&0x80)) {
memmove(buf + i, buf + i + 1, --len - i);
buf[i] |= 0x80;
}
}
#endif
if (local->s != 0)
local->bufsize = sk_write(local->s, buf, len);
cygterm_debug("OK");
return local->bufsize;
}
static void
appendPath(const char *append)
{
char *path;
char *newPath;
cygterm_debug("getting PATH");
if (!(path = getenv("PATH"))) {
cygterm_debug("hmm.. PATH not set");
path = "";
}
cygterm_debug("alloc newPath");
newPath = smalloc(5 + strlen(append) + 1 + strlen(path) + 1);
cygterm_debug("init newPath");
sprintf(newPath, "PATH=%s;%s", path, append);
cygterm_debug("set newPath");
putenv(newPath);
cygterm_debug("free newPath");
sfree(newPath);
}
static void
cygterm_provide_logctx(void *handle, void *logctx)
{
cygterm_debug("top");
}
static void
cygterm_provide_ldisc(void *handle, void *ldisc)
{
cygterm_debug("top");
}
static int
cygterm_sendok(void *handle)
{
cygterm_debug("top");
return 1;
}
static const char *
cygterm_init(void *frontend_handle, void **backend_handle,
Conf *conf,
char *unused_host, int unused_port,
char **realhost, int nodelay, int keepalive)
{
/* XXX: I'm not sure if it is OK to overload Plug like this.
* cygterm_accepting should only be used for the listening socket
* (local->a) while the cygterm_closing, cygterm_receive, and cygterm_sent
* should be used only for the actual connection (local->s).
*/
static const struct plug_function_table fn_table = {
cygterm_log,
cygterm_closing,
cygterm_receive,
cygterm_sent,
cygterm_accepting
};
Local local;
const char *command;
char cmdline[2 * MAX_PATH];
int cport;
const char *err;
int cmdlinelen;
cygterm_debug("top");
local = snew(struct cygterm_backend_data);
local->fn = &fn_table;
local->a = NULL;
local->s = NULL;
local->conf = conf;
local->editing = 0;
local->echoing = 0;
local->exitcode = 0;
*backend_handle = local;
local->frontend = frontend_handle;
/* set up listen socket for communication with child */
cygterm_debug("setupCygTerm");
/* let sk use INADDR_LOOPBACK and let WinSock choose a port */
local->a = sk_newlistener(0, 0, (Plug)local, 1, ADDRTYPE_IPV4);
if ((err = sk_socket_error(local->a)) != NULL)
goto fail_free;
/* now, get the port that WinSock chose */
/* XXX: Is there another function in PuTTY to do this? */
cygterm_debug("getting port");
cport = sk_getport(local->a);
if (cport == -1) {
err = "Failed to get port number for cthelper";
goto fail_close;
}
if (strchr(conf_get_str(local->conf, CONF_termtype), ' ')) {
err = "term type contains spaces";
goto fail_close;
}
/* Build cthelper command line */
if(conf_get_int(conf, CONF_cygterm64)) {
cmdlinelen = sprintf(cmdline, CTHELPER64" %u %s ", cport, conf_get_str(local->conf, CONF_termtype));
}
else {
cmdlinelen = sprintf(cmdline, CTHELPER" %u %s ", cport, conf_get_str(local->conf, CONF_termtype));
}
cmdlinelen += makeAttributes(cmdline + cmdlinelen, conf);
command = conf_get_str(conf, CONF_cygcmd);
cygterm_debug("command is :%s:", command);
/* A command of "." or "-" tells us to pass no command arguments to
* cthelper which will then run the user's shell under Cygwin. */
if ((command[0]=='-'||command[0]=='.') && command[1]=='\0')
;
else if (cmdlinelen + strlen(command) + 2 > sizeof cmdline) {
err = "command is too long";
goto fail_close;
}
else {
cmdlinelen += sprintf(cmdline + cmdlinelen, " %s", command);
}
/* Add the Cygwin /bin path to the PATH. */
if (conf_get_int(conf, CONF_cygautopath)) {
char *cygwinBinPath = getCygwinBin(conf_get_int(conf, CONF_cygterm64));
if (!cygwinBinPath) {
/* we'll try anyway */
cygterm_debug("cygwin bin directory not found");
}
else {
cygterm_debug("found cygwin directory: %s", cygwinBinPath);
appendPath(cygwinBinPath);
sfree(cygwinBinPath);
}
}
cygterm_debug("starting cthelper: %s", cmdline);
if ((err = spawnChild(cmdline, &local->pi, &local->ctl)))
goto fail_close;
/* This should be set to the local hostname, Apparently, realhost is used
* only to set the window title.
*/
strcpy(*realhost = smalloc(sizeof CYGTERM_NAME), CYGTERM_NAME);
cygterm_debug("OK");
return 0;
fail_close:
sk_close(local->a);
fail_free:
sfree(local);
return err;
}
static const struct telnet_special *
cygterm_get_specials(void *handle)
{
cygterm_debug("top");
return NULL;
}
static void
cygterm_special(void *handle, Telnet_Special code)
{
cygterm_debug("top");
}
