#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
+#include <assert.h>
#include <stdarg.h>
-#define PUTTY_DO_GLOBALS /* actually _define_ globals */
+#define PUTTY_DO_GLOBALS /* actually _define_ globals */
#include "putty.h"
#include "storage.h"
#include "tree234.h"
-void fatalbox (char *p, ...) {
+#define MAX_STDIN_BACKLOG 4096
+
+void fatalbox(char *p, ...)
+{
va_list ap;
fprintf(stderr, "FATAL ERROR: ");
va_start(ap, p);
va_end(ap);
fputc('\n', stderr);
WSACleanup();
- exit(1);
+ cleanup_exit(1);
}
-void connection_fatal (char *p, ...) {
+void modalfatalbox(char *p, ...)
+{
va_list ap;
fprintf(stderr, "FATAL ERROR: ");
va_start(ap, p);
va_end(ap);
fputc('\n', stderr);
WSACleanup();
- exit(1);
+ cleanup_exit(1);
}
-
-static char *password = NULL;
-
-void logevent(char *string) { }
-
-void verify_ssh_host_key(char *host, int port, char *keytype,
- char *keystr, char *fingerprint) {
- int ret;
- HANDLE hin;
- DWORD savemode, i;
-
- 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 (ret == 1) /* key was absent */
- fprintf(stderr, absentmsg, fingerprint);
-
- hin = GetStdHandle(STD_INPUT_HANDLE);
- GetConsoleMode(hin, &savemode);
- SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT |
- ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT));
- ReadFile(hin, line, sizeof(line)-1, &i, NULL);
- SetConsoleMode(hin, savemode);
-
- if (ret == 2) { /* key was different */
- if (line[0] != '\0' && line[0] != '\r' && 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 */
- if (line[0] == 'y' || line[0] == 'Y')
- store_host_key(host, port, keytype, keystr);
- else {
- fprintf(stderr, abandoned);
- exit(0);
- }
- }
+void connection_fatal(void *frontend, char *p, ...)
+{
+ va_list ap;
+ fprintf(stderr, "FATAL ERROR: ");
+ va_start(ap, p);
+ vfprintf(stderr, p, ap);
+ va_end(ap);
+ fputc('\n', stderr);
+ WSACleanup();
+ cleanup_exit(1);
+}
+void cmdline_error(char *p, ...)
+{
+ va_list ap;
+ fprintf(stderr, "plink: ");
+ va_start(ap, p);
+ vfprintf(stderr, p, ap);
+ va_end(ap);
+ fputc('\n', stderr);
+ exit(1);
}
-HANDLE outhandle, errhandle;
+HANDLE inhandle, outhandle, errhandle;
DWORD orig_console_mode;
WSAEVENT netevent;
-void begin_session(void) {
- if (!cfg.ldisc_term)
- SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT);
- else
- SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), orig_console_mode);
-}
+static Backend *back;
+static void *backhandle;
+static Config cfg;
-void from_backend(int is_stderr, char *data, int len) {
- int pos;
- DWORD ret;
- HANDLE h = (is_stderr ? errhandle : outhandle);
+int term_ldisc(Terminal *term, int mode)
+{
+ return FALSE;
+}
+void ldisc_update(void *frontend, int echo, int edit)
+{
+ /* Update stdin read mode to reflect changes in line discipline. */
+ DWORD mode;
- pos = 0;
- while (pos < len) {
- if (!WriteFile(h, data+pos, len-pos, &ret, NULL))
- return; /* give up in panic */
- pos += ret;
- }
+ mode = ENABLE_PROCESSED_INPUT;
+ if (echo)
+ mode = mode | ENABLE_ECHO_INPUT;
+ else
+ mode = mode & ~ENABLE_ECHO_INPUT;
+ if (edit)
+ mode = mode | ENABLE_LINE_INPUT;
+ else
+ mode = mode & ~ENABLE_LINE_INPUT;
+ SetConsoleMode(inhandle, mode);
}
struct input_data {
HANDLE event, eventback;
};
-static int get_password(const char *prompt, char *str, int maxlen)
+static DWORD WINAPI stdin_read_thread(void *param)
{
- HANDLE hin, hout;
- DWORD savemode, i;
-
- if (password) {
- static int tried_once = 0;
-
- if (tried_once) {
- return 0;
- } else {
- strncpy(str, password, maxlen);
- str[maxlen-1] = '\0';
- tried_once = 1;
- return 1;
- }
- }
+ struct input_data *idata = (struct input_data *) param;
+ HANDLE inhandle;
- hin = GetStdHandle(STD_INPUT_HANDLE);
- hout = GetStdHandle(STD_OUTPUT_HANDLE);
- if (hin == INVALID_HANDLE_VALUE || hout == INVALID_HANDLE_VALUE) {
- fprintf(stderr, "Cannot get standard input/output handles");
- return 0;
+ inhandle = GetStdHandle(STD_INPUT_HANDLE);
+
+ while (ReadFile(inhandle, idata->buffer, sizeof(idata->buffer),
+ &idata->len, NULL) && idata->len > 0) {
+ SetEvent(idata->event);
+ WaitForSingleObject(idata->eventback, INFINITE);
}
- GetConsoleMode(hin, &savemode);
- SetConsoleMode(hin, (savemode & (~ENABLE_ECHO_INPUT)) |
- ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT);
+ idata->len = 0;
+ SetEvent(idata->event);
- WriteFile(hout, prompt, strlen(prompt), &i, NULL);
- ReadFile(hin, str, maxlen-1, &i, NULL);
+ return 0;
+}
- SetConsoleMode(hin, savemode);
+struct output_data {
+ DWORD len, lenwritten;
+ int writeret;
+ char *buffer;
+ int is_stderr, done;
+ HANDLE event, eventback;
+ int busy;
+};
- if ((int)i > maxlen) i = maxlen-1; else i = i - 2;
- str[i] = '\0';
+static DWORD WINAPI stdout_write_thread(void *param)
+{
+ struct output_data *odata = (struct output_data *) param;
+ HANDLE outhandle, errhandle;
- WriteFile(hout, "\r\n", 2, &i, NULL);
+ outhandle = GetStdHandle(STD_OUTPUT_HANDLE);
+ errhandle = GetStdHandle(STD_ERROR_HANDLE);
- return 1;
+ while (1) {
+ WaitForSingleObject(odata->eventback, INFINITE);
+ if (odata->done)
+ break;
+ odata->writeret =
+ WriteFile(odata->is_stderr ? errhandle : outhandle,
+ odata->buffer, odata->len, &odata->lenwritten, NULL);
+ SetEvent(odata->event);
+ }
+
+ return 0;
}
-static DWORD WINAPI stdin_read_thread(void *param) {
- struct input_data *idata = (struct input_data *)param;
- HANDLE inhandle;
+bufchain stdout_data, stderr_data;
+struct output_data odata, edata;
- inhandle = GetStdHandle(STD_INPUT_HANDLE);
+void try_output(int is_stderr)
+{
+ struct output_data *data = (is_stderr ? &edata : &odata);
+ void *senddata;
+ int sendlen;
+
+ if (!data->busy) {
+ bufchain_prefix(is_stderr ? &stderr_data : &stdout_data,
+ &senddata, &sendlen);
+ data->buffer = senddata;
+ data->len = sendlen;
+ SetEvent(data->eventback);
+ data->busy = 1;
+ }
+}
- while (ReadFile(inhandle, idata->buffer, sizeof(idata->buffer),
- &idata->len, NULL) && idata->len > 0) {
- SetEvent(idata->event);
- WaitForSingleObject(idata->eventback, INFINITE);
+int from_backend(void *frontend_handle, int is_stderr,
+ const char *data, int len)
+{
+ int osize, esize;
+
+ assert(len > 0);
+
+ if (is_stderr) {
+ bufchain_add(&stderr_data, data, len);
+ try_output(1);
+ } else {
+ bufchain_add(&stdout_data, data, len);
+ try_output(0);
}
- idata->len = 0;
- SetEvent(idata->event);
+ osize = bufchain_size(&stdout_data);
+ esize = bufchain_size(&stderr_data);
- return 0;
+ return osize + esize;
}
/*
printf("PuTTY Link: command-line connection utility\n");
printf("%s\n", ver);
printf("Usage: plink [options] [user@]host [command]\n");
+ printf(" (\"host\" can also be a PuTTY saved session name)\n");
printf("Options:\n");
printf(" -v show verbose messages\n");
- printf(" -ssh force use of ssh protocol\n");
+ printf(" -load sessname Load settings from saved session\n");
+ printf(" -ssh -telnet -rlogin -raw\n");
+ printf(" force use of a particular protocol (default SSH)\n");
printf(" -P port connect to specified port\n");
+ printf(" -l user connect with specified username\n");
+ printf(" -m file read remote command(s) from file\n");
+ printf(" -batch disable all interactive prompts\n");
+ printf("The following options only apply to SSH connections:\n");
printf(" -pw passw login with specified password\n");
+ printf(" -L listen-port:host:port Forward local port to "
+ "remote address\n");
+ printf(" -R listen-port:host:port Forward remote port to"
+ " local address\n");
+ printf(" -X -x enable / disable X11 forwarding\n");
+ printf(" -A -a enable / disable agent forwarding\n");
+ printf(" -t -T enable / disable pty allocation\n");
+ printf(" -1 -2 force use of particular protocol version\n");
+ printf(" -C enable compression\n");
+ printf(" -i key private key file for authentication\n");
exit(1);
}
-char *do_select(SOCKET skt, int startup) {
+char *do_select(SOCKET skt, int startup)
+{
int events;
if (startup) {
- events = FD_READ | FD_WRITE | FD_OOB | FD_CLOSE;
+ events = (FD_CONNECT | FD_READ | FD_WRITE |
+ FD_OOB | FD_CLOSE | FD_ACCEPT);
} else {
events = 0;
}
- if (WSAEventSelect (skt, netevent, events) == SOCKET_ERROR) {
- switch (WSAGetLastError()) {
- case WSAENETDOWN: return "Network is down";
- default: return "WSAAsyncSelect(): unknown error";
- }
+ if (WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) {
+ switch (WSAGetLastError()) {
+ case WSAENETDOWN:
+ return "Network is down";
+ default:
+ return "WSAAsyncSelect(): unknown error";
+ }
}
return NULL;
}
-int main(int argc, char **argv) {
+int main(int argc, char **argv)
+{
WSADATA wsadata;
WORD winsock_ver;
- WSAEVENT stdinevent;
- HANDLE handles[2];
- DWORD threadid;
+ WSAEVENT stdinevent, stdoutevent, stderrevent;
+ HANDLE handles[4];
+ DWORD in_threadid, out_threadid, err_threadid;
struct input_data idata;
+ int reading;
int sending;
int portnumber = -1;
SOCKET *sklist;
int skcount, sksize;
int connopen;
+ int exitcode;
+ int errors;
- ssh_get_password = get_password;
+ ssh_get_line = console_get_line;
- sklist = NULL; skcount = sksize = 0;
+ sklist = NULL;
+ skcount = sksize = 0;
+ /*
+ * Initialise port and protocol to sensible defaults. (These
+ * will be overridden by more or less anything.)
+ */
+ default_protocol = PROT_SSH;
+ default_port = 22;
flags = FLAG_STDERR;
/*
do_defaults(NULL, &cfg);
default_protocol = cfg.protocol;
default_port = cfg.port;
+ errors = 0;
{
- /*
- * 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;
- }
- }
- }
+ /*
+ * 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 == '-') {
- if (!strcmp(p, "-ssh")) {
- default_protocol = cfg.protocol = PROT_SSH;
- default_port = cfg.port = 22;
- } else if (!strcmp(p, "-telnet")) {
- default_protocol = cfg.protocol = PROT_TELNET;
- default_port = cfg.port = 23;
- } else if (!strcmp(p, "-raw")) {
- default_protocol = cfg.protocol = PROT_RAW;
- } else if (!strcmp(p, "-v")) {
- flags |= FLAG_VERBOSE;
- } else if (!strcmp(p, "-log")) {
- logfile = "putty.log";
- } else if (!strcmp(p, "-pw") && argc > 1) {
- --argc, password = *++argv;
- } else if (!strcmp(p, "-l") && argc > 1) {
- char *username;
- --argc, username = *++argv;
- strncpy(cfg.username, username, sizeof(cfg.username));
- cfg.username[sizeof(cfg.username)-1] = '\0';
- } else if (!strcmp(p, "-P") && argc > 1) {
- --argc, portnumber = atoi(*++argv);
- }
+ char *p = *++argv;
+ if (*p == '-') {
+ int ret = cmdline_process_param(p, (argc > 1 ? argv[1] : NULL),
+ 1, &cfg);
+ if (ret == -2) {
+ fprintf(stderr,
+ "plink: option \"%s\" requires an argument\n", p);
+ errors = 1;
+ } else if (ret == 2) {
+ --argc, ++argv;
+ } else if (ret == 1) {
+ continue;
+ } else if (!strcmp(p, "-batch")) {
+ console_batch_mode = 1;
+ } else {
+ fprintf(stderr, "plink: unknown option \"%s\"\n", p);
+ errors = 1;
+ }
} else if (*p) {
- if (!*cfg.host) {
- char *q = p;
- /*
- * If the hostname starts with "telnet:", set the
- * protocol to Telnet and process the string as a
- * Telnet URL.
- */
- if (!strncmp(q, "telnet:", 7)) {
- char c;
-
- q += 7;
- if (q[0] == '/' && q[1] == '/')
- q += 2;
- cfg.protocol = PROT_TELNET;
- p = q;
- while (*p && *p != ':' && *p != '/') p++;
- c = *p;
- if (*p)
- *p++ = '\0';
- if (c == ':')
- cfg.port = atoi(p);
- else
- cfg.port = -1;
- strncpy (cfg.host, q, sizeof(cfg.host)-1);
- cfg.host[sizeof(cfg.host)-1] = '\0';
- } else {
- char *r;
- /*
- * Before we process the [user@]host string, we
- * first check for the presence of a protocol
- * prefix (a protocol name followed by ",").
- */
- r = strchr(p, ',');
- if (r) {
- int i, j;
- for (i = 0; backends[i].backend != NULL; i++) {
- j = strlen(backends[i].name);
- if (j == r-p &&
- !memcmp(backends[i].name, p, j)) {
- default_protocol = cfg.protocol = backends[i].protocol;
- portnumber = backends[i].backend->default_port;
- p = r+1;
- break;
- }
- }
- }
-
- /*
- * Three cases. Either (a) there's a nonzero
- * length string followed by an @, in which
- * case that's user and the remainder is host.
- * Or (b) there's only one string, not counting
- * a potential initial @, and it exists in the
- * saved-sessions database. Or (c) only one
- * string and it _doesn't_ exist in the
- * database.
- */
- r = strrchr(p, '@');
- if (r == p) p++, r = NULL; /* discount initial @ */
- if (r == NULL) {
- /*
- * One string.
- */
- Config cfg2;
- do_defaults (p, &cfg2);
- if (cfg2.host[0] == '\0') {
- /* No settings for this host; use defaults */
- strncpy(cfg.host, p, sizeof(cfg.host)-1);
- cfg.host[sizeof(cfg.host)-1] = '\0';
- cfg.port = 22;
- } else
- cfg = cfg2;
- } else {
- *r++ = '\0';
- strncpy(cfg.username, p, sizeof(cfg.username)-1);
- cfg.username[sizeof(cfg.username)-1] = '\0';
- strncpy(cfg.host, r, sizeof(cfg.host)-1);
- cfg.host[sizeof(cfg.host)-1] = '\0';
- cfg.port = 22;
- }
- }
- } else {
- int len = sizeof(cfg.remote_cmd) - 1;
- char *cp = cfg.remote_cmd;
- int len2;
-
- strncpy(cp, p, len); cp[len] = '\0';
- len2 = strlen(cp); len -= len2; cp += len2;
- while (--argc) {
- if (len > 0)
- len--, *cp++ = ' ';
- strncpy(cp, *++argv, len); cp[len] = '\0';
- len2 = strlen(cp); len -= len2; cp += len2;
- }
- cfg.nopty = TRUE; /* command => no terminal */
- cfg.ldisc_term = TRUE; /* use stdin like a line buffer */
- break; /* done with cmdline */
- }
+ if (!*cfg.host) {
+ char *q = p;
+ /*
+ * If the hostname starts with "telnet:", set the
+ * protocol to Telnet and process the string as a
+ * Telnet URL.
+ */
+ if (!strncmp(q, "telnet:", 7)) {
+ char c;
+
+ q += 7;
+ if (q[0] == '/' && q[1] == '/')
+ q += 2;
+ cfg.protocol = PROT_TELNET;
+ p = q;
+ while (*p && *p != ':' && *p != '/')
+ p++;
+ c = *p;
+ if (*p)
+ *p++ = '\0';
+ if (c == ':')
+ cfg.port = atoi(p);
+ else
+ cfg.port = -1;
+ strncpy(cfg.host, q, sizeof(cfg.host) - 1);
+ cfg.host[sizeof(cfg.host) - 1] = '\0';
+ } else {
+ char *r;
+ /*
+ * Before we process the [user@]host string, we
+ * first check for the presence of a protocol
+ * prefix (a protocol name followed by ",").
+ */
+ r = strchr(p, ',');
+ if (r) {
+ int i, j;
+ for (i = 0; backends[i].backend != NULL; i++) {
+ j = strlen(backends[i].name);
+ if (j == r - p &&
+ !memcmp(backends[i].name, p, j)) {
+ default_protocol = cfg.protocol =
+ backends[i].protocol;
+ portnumber =
+ backends[i].backend->default_port;
+ p = r + 1;
+ break;
+ }
+ }
+ }
+
+ /*
+ * Three cases. Either (a) there's a nonzero
+ * length string followed by an @, in which
+ * case that's user and the remainder is host.
+ * Or (b) there's only one string, not counting
+ * a potential initial @, and it exists in the
+ * saved-sessions database. Or (c) only one
+ * string and it _doesn't_ exist in the
+ * database.
+ */
+ r = strrchr(p, '@');
+ if (r == p)
+ p++, r = NULL; /* discount initial @ */
+ if (r == NULL) {
+ /*
+ * One string.
+ */
+ Config cfg2;
+ do_defaults(p, &cfg2);
+ if (cfg2.host[0] == '\0') {
+ /* No settings for this host; use defaults */
+ strncpy(cfg.host, p, sizeof(cfg.host) - 1);
+ cfg.host[sizeof(cfg.host) - 1] = '\0';
+ cfg.port = default_port;
+ } else {
+ cfg = cfg2;
+ cfg.remote_cmd_ptr = cfg.remote_cmd;
+ }
+ } else {
+ *r++ = '\0';
+ strncpy(cfg.username, p, sizeof(cfg.username) - 1);
+ cfg.username[sizeof(cfg.username) - 1] = '\0';
+ strncpy(cfg.host, r, sizeof(cfg.host) - 1);
+ cfg.host[sizeof(cfg.host) - 1] = '\0';
+ cfg.port = default_port;
+ }
+ }
+ } else {
+ char *command;
+ int cmdlen, cmdsize;
+ cmdlen = cmdsize = 0;
+ command = NULL;
+
+ while (argc) {
+ while (*p) {
+ if (cmdlen >= cmdsize) {
+ cmdsize = cmdlen + 512;
+ command = sresize(command, cmdsize, char);
+ }
+ command[cmdlen++]=*p++;
+ }
+ if (cmdlen >= cmdsize) {
+ cmdsize = cmdlen + 512;
+ command = sresize(command, cmdsize, char);
+ }
+ command[cmdlen++]=' '; /* always add trailing space */
+ if (--argc) p = *++argv;
+ }
+ if (cmdlen) command[--cmdlen]='\0';
+ /* change trailing blank to NUL */
+ cfg.remote_cmd_ptr = command;
+ cfg.remote_cmd_ptr2 = NULL;
+ cfg.nopty = TRUE; /* command => no terminal */
+
+ break; /* done with cmdline */
+ }
}
}
+ if (errors)
+ return 1;
+
if (!*cfg.host) {
- usage();
+ usage();
+ }
+
+ /*
+ * Trim leading whitespace off the hostname if it's there.
+ */
+ {
+ int space = strspn(cfg.host, " \t");
+ memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space);
+ }
+
+ /* See if host is of the form user@host */
+ if (cfg.host[0] != '\0') {
+ char *atsign = strchr(cfg.host, '@');
+ /* Make sure we're not overflowing the user field */
+ if (atsign) {
+ if (atsign - cfg.host < sizeof cfg.username) {
+ strncpy(cfg.username, cfg.host, atsign - cfg.host);
+ cfg.username[atsign - cfg.host] = '\0';
+ }
+ memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1));
+ }
+ }
+
+ /*
+ * Perform command-line overrides on session configuration.
+ */
+ cmdline_run_saved(&cfg);
+
+ /*
+ * Trim a colon suffix off the hostname if it's there.
+ */
+ cfg.host[strcspn(cfg.host, ":")] = '\0';
+
+ /*
+ * Remove any remaining whitespace from the hostname.
+ */
+ {
+ int p1 = 0, p2 = 0;
+ while (cfg.host[p2] != '\0') {
+ if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') {
+ cfg.host[p1] = cfg.host[p2];
+ p1++;
+ }
+ p2++;
+ }
+ cfg.host[p1] = '\0';
}
- if (!*cfg.remote_cmd)
- flags |= FLAG_INTERACTIVE;
+ if (!*cfg.remote_cmd_ptr)
+ flags |= FLAG_INTERACTIVE;
/*
* Select protocol. This is farmed out into a table in a
* separate file to enable an ssh-free variant.
*/
{
- int i;
- back = NULL;
- for (i = 0; backends[i].backend != NULL; i++)
- if (backends[i].protocol == cfg.protocol) {
- back = backends[i].backend;
- break;
- }
- if (back == NULL) {
- fprintf(stderr, "Internal fault: Unsupported protocol found\n");
- return 1;
- }
+ int i;
+ back = NULL;
+ for (i = 0; backends[i].backend != NULL; i++)
+ if (backends[i].protocol == cfg.protocol) {
+ back = backends[i].backend;
+ break;
+ }
+ if (back == NULL) {
+ fprintf(stderr,
+ "Internal fault: Unsupported protocol found\n");
+ return 1;
+ }
}
/*
* Select port.
*/
if (portnumber != -1)
- cfg.port = portnumber;
+ cfg.port = portnumber;
/*
* Initialise WinSock.
{
char *error;
char *realhost;
+ /* nodelay is only useful if stdin is a character device (console) */
+ int nodelay = cfg.tcp_nodelay &&
+ (GetFileType(GetStdHandle(STD_INPUT_HANDLE)) == FILE_TYPE_CHAR);
- error = back->init (cfg.host, cfg.port, &realhost);
+ error = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port,
+ &realhost, nodelay);
if (error) {
fprintf(stderr, "Unable to open connection:\n%s", error);
return 1;
}
+ logctx = log_init(NULL, &cfg);
+ back->provide_logctx(backhandle, logctx);
+ console_provide_logctx(logctx);
+ sfree(realhost);
}
connopen = 1;
stdinevent = CreateEvent(NULL, FALSE, FALSE, NULL);
+ stdoutevent = CreateEvent(NULL, FALSE, FALSE, NULL);
+ stderrevent = CreateEvent(NULL, FALSE, FALSE, NULL);
- GetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), &orig_console_mode);
- SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_PROCESSED_INPUT);
+ inhandle = GetStdHandle(STD_INPUT_HANDLE);
outhandle = GetStdHandle(STD_OUTPUT_HANDLE);
errhandle = GetStdHandle(STD_ERROR_HANDLE);
+ GetConsoleMode(inhandle, &orig_console_mode);
+ SetConsoleMode(inhandle, ENABLE_PROCESSED_INPUT);
/*
* Turn off ECHO and LINE input modes. We don't care if this
*/
handles[0] = netevent;
handles[1] = stdinevent;
+ handles[2] = stdoutevent;
+ handles[3] = stderrevent;
sending = FALSE;
+
+ /*
+ * Create spare threads to write to stdout and stderr, so we
+ * can arrange asynchronous writes.
+ */
+ odata.event = stdoutevent;
+ odata.eventback = CreateEvent(NULL, FALSE, FALSE, NULL);
+ odata.is_stderr = 0;
+ odata.busy = odata.done = 0;
+ if (!CreateThread(NULL, 0, stdout_write_thread,
+ &odata, 0, &out_threadid)) {
+ fprintf(stderr, "Unable to create output thread\n");
+ cleanup_exit(1);
+ }
+ edata.event = stderrevent;
+ edata.eventback = CreateEvent(NULL, FALSE, FALSE, NULL);
+ edata.is_stderr = 1;
+ edata.busy = edata.done = 0;
+ if (!CreateThread(NULL, 0, stdout_write_thread,
+ &edata, 0, &err_threadid)) {
+ fprintf(stderr, "Unable to create error output thread\n");
+ cleanup_exit(1);
+ }
+
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;
- idata.eventback = CreateEvent(NULL, FALSE, FALSE, NULL);
- 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;
- enum234 e;
+ int n;
+
+ if (!sending && back->sendok(backhandle)) {
+ /*
+ * 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;
+ idata.eventback = CreateEvent(NULL, FALSE, FALSE, NULL);
+ if (!CreateThread(NULL, 0, stdin_read_thread,
+ &idata, 0, &in_threadid)) {
+ fprintf(stderr, "Unable to create input thread\n");
+ cleanup_exit(1);
+ }
+ sending = TRUE;
+ }
+
+ n = WaitForMultipleObjects(4, handles, FALSE, INFINITE);
+ if (n == 0) {
+ WSANETWORKEVENTS things;
SOCKET socket;
- extern SOCKET first_socket(enum234 *), next_socket(enum234 *);
+ extern SOCKET first_socket(int *), next_socket(int *);
extern int select_result(WPARAM, LPARAM);
- int i;
-
- /*
- * We must not call select_result() for any socket
- * until we have finished enumerating within the tree.
- * This is because select_result() may close the socket
- * and modify the tree.
- */
- /* Count the active sockets. */
- i = 0;
- for (socket = first_socket(&e); socket != INVALID_SOCKET;
- socket = next_socket(&e))
- i++;
-
- /* Expand the buffer if necessary. */
- if (i > sksize) {
- sksize = i+16;
- sklist = srealloc(sklist, sksize * sizeof(*sklist));
- }
-
- /* Retrieve the sockets into sklist. */
- skcount = 0;
- for (socket = first_socket(&e); socket != INVALID_SOCKET;
- socket = next_socket(&e)) {
- sklist[skcount++] = socket;
- }
-
- /* Now we're done enumerating; go through the list. */
- for (i = 0; i < skcount; i++) {
- WPARAM wp;
- socket = sklist[i];
- wp = (WPARAM)socket;
+ int i, socketstate;
+
+ /*
+ * We must not call select_result() for any socket
+ * until we have finished enumerating within the tree.
+ * This is because select_result() may close the socket
+ * and modify the tree.
+ */
+ /* Count the active sockets. */
+ i = 0;
+ for (socket = first_socket(&socketstate);
+ socket != INVALID_SOCKET;
+ socket = next_socket(&socketstate)) i++;
+
+ /* Expand the buffer if necessary. */
+ if (i > sksize) {
+ sksize = i + 16;
+ sklist = sresize(sklist, sksize, SOCKET);
+ }
+
+ /* Retrieve the sockets into sklist. */
+ skcount = 0;
+ for (socket = first_socket(&socketstate);
+ socket != INVALID_SOCKET;
+ socket = next_socket(&socketstate)) {
+ sklist[skcount++] = socket;
+ }
+
+ /* Now we're done enumerating; go through the list. */
+ for (i = 0; i < skcount; i++) {
+ WPARAM wp;
+ socket = sklist[i];
+ wp = (WPARAM) socket;
if (!WSAEnumNetworkEvents(socket, NULL, &things)) {
- noise_ultralight(socket);
- noise_ultralight(things.lNetworkEvents);
- if (things.lNetworkEvents & FD_READ)
- connopen &= select_result(wp, (LPARAM)FD_READ);
- if (things.lNetworkEvents & FD_CLOSE)
- connopen &= select_result(wp, (LPARAM)FD_CLOSE);
- if (things.lNetworkEvents & FD_OOB)
- connopen &= select_result(wp, (LPARAM)FD_OOB);
- if (things.lNetworkEvents & FD_WRITE)
- connopen &= select_result(wp, (LPARAM)FD_WRITE);
+ static const struct { int bit, mask; } eventtypes[] = {
+ {FD_CONNECT_BIT, FD_CONNECT},
+ {FD_READ_BIT, FD_READ},
+ {FD_CLOSE_BIT, FD_CLOSE},
+ {FD_OOB_BIT, FD_OOB},
+ {FD_WRITE_BIT, FD_WRITE},
+ {FD_ACCEPT_BIT, FD_ACCEPT},
+ };
+ int e;
+
+ noise_ultralight(socket);
+ noise_ultralight(things.lNetworkEvents);
+
+ for (e = 0; e < lenof(eventtypes); e++)
+ if (things.lNetworkEvents & eventtypes[e].mask) {
+ LPARAM lp;
+ int err = things.iErrorCode[eventtypes[e].bit];
+ lp = WSAMAKESELECTREPLY(eventtypes[e].mask, err);
+ connopen &= select_result(wp, lp);
+ }
+ }
+ }
+ } else if (n == 1) {
+ reading = 0;
+ noise_ultralight(idata.len);
+ if (connopen && back->socket(backhandle) != NULL) {
+ if (idata.len > 0) {
+ back->send(backhandle, idata.buffer, idata.len);
+ } else {
+ back->special(backhandle, TS_EOF);
}
}
- } else if (n == 1) {
- noise_ultralight(idata.len);
- if (idata.len > 0) {
- back->send(idata.buffer, idata.len);
- } else {
- back->special(TS_EOF);
- }
- SetEvent(idata.eventback);
- }
- if (!connopen || back->socket() == NULL)
- break; /* we closed the connection */
+ } else if (n == 2) {
+ odata.busy = 0;
+ if (!odata.writeret) {
+ fprintf(stderr, "Unable to write to standard output\n");
+ cleanup_exit(0);
+ }
+ bufchain_consume(&stdout_data, odata.lenwritten);
+ if (bufchain_size(&stdout_data) > 0)
+ try_output(0);
+ if (connopen && back->socket(backhandle) != NULL) {
+ back->unthrottle(backhandle, bufchain_size(&stdout_data) +
+ bufchain_size(&stderr_data));
+ }
+ } else if (n == 3) {
+ edata.busy = 0;
+ if (!edata.writeret) {
+ fprintf(stderr, "Unable to write to standard output\n");
+ cleanup_exit(0);
+ }
+ bufchain_consume(&stderr_data, edata.lenwritten);
+ if (bufchain_size(&stderr_data) > 0)
+ try_output(1);
+ if (connopen && back->socket(backhandle) != NULL) {
+ back->unthrottle(backhandle, bufchain_size(&stdout_data) +
+ bufchain_size(&stderr_data));
+ }
+ }
+ if (!reading && back->sendbuffer(backhandle) < MAX_STDIN_BACKLOG) {
+ SetEvent(idata.eventback);
+ reading = 1;
+ }
+ if ((!connopen || back->socket(backhandle) == NULL) &&
+ bufchain_size(&stdout_data) == 0 &&
+ bufchain_size(&stderr_data) == 0)
+ break; /* we closed the connection */
}
WSACleanup();
- return 0;
+ exitcode = back->exitcode(backhandle);
+ if (exitcode < 0) {
+ fprintf(stderr, "Remote process exit code unavailable\n");
+ exitcode = 1; /* this is an error condition */
+ }
+ return exitcode;
}
projects / u / mdw / putty / blobdiff