#define PUTTY_DO_GLOBALS /* actually _define_ globals */
#include "putty.h"
+#include "storage.h"
void fatalbox (char *p, ...) {
va_list ap;
static char *password = NULL;
-/*
- * Stubs for linking with other modules.
- */
-void write_clip (void *data, int len) { }
-void term_deselect(void) { }
+void logevent(char *string) { }
+
+void verify_ssh_host_key(char *host, int port, char *keytype,
+ char *keystr, char *fingerprint) {
+ int ret;
+
+ static const char absentmsg[] =
+ "The server's host key is not cached in the registry. You\n"
+ "have no guarantee that the server is the computer you\n"
+ "think it is.\n"
+ "The server's key fingerprint is:\n"
+ "%s\n"
+ "If you trust this host, enter \"y\" to add the key to\n"
+ "PuTTY's cache and carry on connecting.\n"
+ "If you do not trust this host, enter \"n\" to abandon the\n"
+ "connection.\n"
+ "Continue connecting? (y/n) ";
+
+ static const char wrongmsg[] =
+ "WARNING - POTENTIAL SECURITY BREACH!\n"
+ "The server's host key does not match the one PuTTY has\n"
+ "cached in the registry. This means that either the\n"
+ "server administrator has changed the host key, or you\n"
+ "have actually connected to another computer pretending\n"
+ "to be the server.\n"
+ "The new key fingerprint is:\n"
+ "%s\n"
+ "If you were expecting this change and trust the new key,\n"
+ "enter \"y\" to update PuTTY's cache and continue connecting.\n"
+ "If you want to carry on connecting but without updating\n"
+ "the cache, enter \"n\".\n"
+ "If you want to abandon the connection completely, press\n"
+ "Return to cancel. Pressing Return is the ONLY guaranteed\n"
+ "safe choice.\n"
+ "Update cached key? (y/n, Return cancels connection) ";
+
+ static const char abandoned[] = "Connection abandoned.\n";
+
+ char line[32];
+
+ /*
+ * Verify the key against the registry.
+ */
+ ret = verify_host_key(host, port, keytype, keystr);
+
+ if (ret == 0) /* success - key matched OK */
+ return;
+ if (ret == 2) { /* key was different */
+ fprintf(stderr, wrongmsg, fingerprint);
+ if (fgets(line, sizeof(line), stdin) &&
+ line[0] != '\0' && line[0] != '\n') {
+ if (line[0] == 'y' || line[0] == 'Y')
+ store_host_key(host, port, keytype, keystr);
+ } else {
+ fprintf(stderr, abandoned);
+ exit(0);
+ }
+ }
+ if (ret == 1) { /* key was absent */
+ fprintf(stderr, absentmsg, fingerprint);
+ if (fgets(line, sizeof(line), stdin) &&
+ (line[0] == 'y' || line[0] == 'Y'))
+ store_host_key(host, port, keytype, keystr);
+ else {
+ fprintf(stderr, abandoned);
+ exit(0);
+ }
+ }
+}
HANDLE outhandle;
DWORD orig_console_mode;
return 1;
}
-int WINAPI stdin_read_thread(void *param) {
+static int WINAPI stdin_read_thread(void *param) {
struct input_data *idata = (struct input_data *)param;
HANDLE inhandle;
/*
* Process the command line.
*/
- do_defaults(NULL);
+ do_defaults(NULL, &cfg);
default_protocol = cfg.protocol;
default_port = cfg.port;
+ {
+ /*
+ * Override the default protocol if PLINK_PROTOCOL is set.
+ */
+ char *p = getenv("PLINK_PROTOCOL");
+ int i;
+ if (p) {
+ for (i = 0; backends[i].backend != NULL; i++) {
+ if (!strcmp(backends[i].name, p)) {
+ default_protocol = cfg.protocol = backends[i].protocol;
+ default_port = cfg.port = backends[i].backend->default_port;
+ break;
+ }
+ }
+ }
+ }
while (--argc) {
char *p = *++argv;
if (*p == '-') {
/*
* One string.
*/
- do_defaults (p);
+ do_defaults (p, &cfg);
if (cfg.host[0] == '\0') {
/* No settings for this host; use defaults */
strncpy(cfg.host, p, sizeof(cfg.host)-1);
if (!*cfg.host) {
usage();
}
- if (portnumber != -1)
- cfg.port = portnumber;
if (!*cfg.remote_cmd)
flags |= FLAG_INTERACTIVE;
}
/*
+ * Select port.
+ */
+ if (portnumber != -1)
+ cfg.port = portnumber;
+
+ /*
* Initialise WinSock.
*/
winsock_ver = MAKEWORD(2, 0);
sending = FALSE;
while (1) {
int n;
+
+ if (!sending && back->sendok()) {
+ /*
+ * Create a separate thread to read from stdin. This is
+ * a total pain, but I can't find another way to do it:
+ *
+ * - an overlapped ReadFile or ReadFileEx just doesn't
+ * happen; we get failure from ReadFileEx, and
+ * ReadFile blocks despite being given an OVERLAPPED
+ * structure. Perhaps we can't do overlapped reads
+ * on consoles. WHY THE HELL NOT?
+ *
+ * - WaitForMultipleObjects(netevent, console) doesn't
+ * work, because it signals the console when
+ * _anything_ happens, including mouse motions and
+ * other things that don't cause data to be readable
+ * - so we're back to ReadFile blocking.
+ */
+ idata.event = stdinevent;
+ if (!CreateThread(NULL, 0, stdin_read_thread,
+ &idata, 0, &threadid)) {
+ fprintf(stderr, "Unable to create second thread\n");
+ exit(1);
+ }
+ sending = TRUE;
+ }
+
n = WaitForMultipleObjects(2, handles, FALSE, INFINITE);
if (n == 0) {
WSANETWORKEVENTS things;
}
}
term_out();
- if (!sending && back->sendok()) {
- /*
- * Create a separate thread to read from stdin.
- * This is a total pain, but I can't find another
- * way to do it:
- *
- * - an overlapped ReadFile or ReadFileEx just
- * doesn't happen; we get failure from
- * ReadFileEx, and ReadFile blocks despite being
- * given an OVERLAPPED structure. Perhaps we
- * can't do overlapped reads on consoles. WHY
- * THE HELL NOT?
- *
- * - WaitForMultipleObjects(netevent, console)
- * doesn't work, because it signals the console
- * when _anything_ happens, including mouse
- * motions and other things that don't cause
- * data to be readable - so we're back to
- * ReadFile blocking.
- */
- idata.event = stdinevent;
- if (!CreateThread(NULL, 0, stdin_read_thread,
- &idata, 0, &threadid)) {
- fprintf(stderr, "Unable to create second thread\n");
- exit(1);
- }
- sending = TRUE;
- }
} else if (n == 1) {
if (idata.len > 0) {
back->send(idata.buffer, idata.len);
projects / u / mdw / putty / blobdiff