+ if (mode == 0) {
+
+ /* ------------------------------------------------------------------
+ * Now we're ready to do Real Stuff.
+ */
+ while (1) {
+ struct sftp_command *cmd;
+ cmd = sftp_getcmd(stdin, 0, 0);
+ if (!cmd)
+ break;
+ if (cmd->obey(cmd) < 0)
+ break;
+ }
+ } else {
+ fp = fopen(batchfile, "r");
+ if (!fp) {
+ printf("Fatal: unable to open %s\n", batchfile);
+ return;
+ }
+ while (1) {
+ struct sftp_command *cmd;
+ cmd = sftp_getcmd(fp, mode, modeflags);
+ if (!cmd)
+ break;
+ if (cmd->obey(cmd) < 0)
+ break;
+ if (fxp_error() != NULL) {
+ if (!(modeflags & 2))
+ break;
+ }
+ }
+ fclose(fp);
+
+ }
+}
+
+/* ----------------------------------------------------------------------
+ * Dirty bits: integration with PuTTY.
+ */
+
+static int verbose = 0;
+
+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 want to carry on connecting just once, without\n"
+ "adding the key to the cache, enter \"n\".\n"
+ "If you do not trust this host, press Return to abandon the\n"
+ "connection.\n"
+ "Store key in cache? (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);
+ fflush(stderr);
+ }
+ if (ret == 1) { /* key was absent */
+ fprintf(stderr, absentmsg, fingerprint);
+ fflush(stderr);
+ }
+
+ 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 (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);
+ }
+}
+
+/*
+ * Ask whether the selected cipher is acceptable (since it was
+ * below the configured 'warn' threshold).
+ * cs: 0 = both ways, 1 = client->server, 2 = server->client
+ */
+void askcipher(char *ciphername, int cs)
+{
+ HANDLE hin;
+ DWORD savemode, i;
+
+ static const char msg[] =
+ "The first %scipher supported by the server is\n"
+ "%s, which is below the configured warning threshold.\n"
+ "Continue with connection? (y/n) ";
+ static const char abandoned[] = "Connection abandoned.\n";
+
+ char line[32];
+
+ fprintf(stderr, msg,
+ (cs == 0) ? "" :
+ (cs == 1) ? "client-to-server " :
+ "server-to-client ",
+ ciphername);
+ fflush(stderr);
+
+ 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 (line[0] == 'y' || line[0] == 'Y') {
+ return;
+ } else {
+ fprintf(stderr, abandoned);
+ exit(0);
+ }
+}
+
+/*
+ * Warn about the obsolescent key file format.
+ */
+void old_keyfile_warning(void)
+{
+ static const char message[] =
+ "You are loading an SSH 2 private key which has an\n"
+ "old version of the file format. This means your key\n"
+ "file is not fully tamperproof. Future versions of\n"
+ "PuTTY may stop supporting this private key format,\n"
+ "so we recommend you convert your key to the new\n"
+ "format.\n"
+ "\n"
+ "Once the key is loaded into PuTTYgen, you can perform\n"
+ "this conversion simply by saving it again.\n";
+
+ fputs(message, stderr);
+}
+
+/*
+ * Print an error message and perform a fatal exit.
+ */
+void fatalbox(char *fmt, ...)
+{
+ char str[0x100]; /* Make the size big enough */
+ va_list ap;
+ va_start(ap, fmt);
+ strcpy(str, "Fatal:");
+ vsprintf(str + strlen(str), fmt, ap);
+ va_end(ap);
+ strcat(str, "\n");
+ fputs(stderr, str);
+
+ exit(1);
+}
+void connection_fatal(char *fmt, ...)
+{
+ char str[0x100]; /* Make the size big enough */
+ va_list ap;
+ va_start(ap, fmt);
+ strcpy(str, "Fatal:");
+ vsprintf(str + strlen(str), fmt, ap);
+ va_end(ap);
+ strcat(str, "\n");
+ fputs(stderr, str);
+
+ exit(1);
+}
+
+void logevent(char *string)
+{
+}
+
+void ldisc_send(char *buf, int len, int interactive)
+{
+ /*
+ * This is only here because of the calls to ldisc_send(NULL,
+ * 0) in ssh.c. Nothing in PSFTP actually needs to use the
+ * ldisc as an ldisc. So if we get called with any real data, I
+ * want to know about it.
+ */
+ assert(len == 0);
+}
+
+/*
+ * Be told what socket we're supposed to be using.
+ */
+static SOCKET sftp_ssh_socket;
+char *do_select(SOCKET skt, int startup)
+{
+ if (startup)
+ sftp_ssh_socket = skt;
+ else
+ sftp_ssh_socket = INVALID_SOCKET;
+ return NULL;
+}
+extern int select_result(WPARAM, LPARAM);
+
+/*
+ * Receive a block of data from the SSH link. Block until all data
+ * is available.
+ *
+ * To do this, we repeatedly call the SSH protocol module, with our
+ * own trap in from_backend() to catch the data that comes back. We
+ * do this until we have enough data.
+ */
+
+static unsigned char *outptr; /* where to put the data */
+static unsigned outlen; /* how much data required */
+static unsigned char *pending = NULL; /* any spare data */
+static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */
+int from_backend(int is_stderr, char *data, int datalen)
+{
+ unsigned char *p = (unsigned char *) data;
+ unsigned len = (unsigned) datalen;
+
+ /*
+ * stderr data is just spouted to local stderr and otherwise
+ * ignored.
+ */
+ if (is_stderr) {
+ fwrite(data, 1, len, stderr);
+ return 0;
+ }
+
+ /*
+ * If this is before the real session begins, just return.
+ */
+ if (!outptr)
+ return 0;
+
+ if (outlen > 0) {
+ unsigned used = outlen;
+ if (used > len)
+ used = len;
+ memcpy(outptr, p, used);
+ outptr += used;
+ outlen -= used;
+ p += used;
+ len -= used;
+ }
+
+ if (len > 0) {
+ if (pendsize < pendlen + len) {
+ pendsize = pendlen + len + 4096;
+ pending = (pending ? srealloc(pending, pendsize) :
+ smalloc(pendsize));
+ if (!pending)
+ fatalbox("Out of memory");
+ }
+ memcpy(pending + pendlen, p, len);
+ pendlen += len;
+ }
+
+ return 0;
+}
+int sftp_recvdata(char *buf, int len)
+{
+ outptr = (unsigned char *) buf;
+ outlen = len;
+
+ /*
+ * See if the pending-input block contains some of what we
+ * need.
+ */
+ if (pendlen > 0) {
+ unsigned pendused = pendlen;
+ if (pendused > outlen)
+ pendused = outlen;
+ memcpy(outptr, pending, pendused);
+ memmove(pending, pending + pendused, pendlen - pendused);
+ outptr += pendused;
+ outlen -= pendused;
+ pendlen -= pendused;
+ if (pendlen == 0) {
+ pendsize = 0;
+ sfree(pending);
+ pending = NULL;
+ }
+ if (outlen == 0)
+ return 1;
+ }
+
+ while (outlen > 0) {
+ fd_set readfds;
+
+ FD_ZERO(&readfds);
+ FD_SET(sftp_ssh_socket, &readfds);
+ if (select(1, &readfds, NULL, NULL, NULL) < 0)
+ return 0; /* doom */
+ select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ);
+ }
+
+ return 1;
+}
+int sftp_senddata(char *buf, int len)
+{
+ back->send((unsigned char *) buf, len);
+ return 1;
+}
+
+/*
+ * Loop through the ssh connection and authentication process.
+ */
+static void ssh_sftp_init(void)
+{
+ if (sftp_ssh_socket == INVALID_SOCKET)
+ return;
+ while (!back->sendok()) {
+ fd_set readfds;
+ FD_ZERO(&readfds);
+ FD_SET(sftp_ssh_socket, &readfds);
+ if (select(1, &readfds, NULL, NULL, NULL) < 0)
+ return; /* doom */
+ select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ);
+ }
+}
+
+static char *password = NULL;
+static int get_line(const char *prompt, char *str, int maxlen, int is_pw)
+{
+ HANDLE hin, hout;
+ DWORD savemode, newmode, 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;
+ }
+ }
+
+ 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\n");
+ exit(1);
+ }
+
+ GetConsoleMode(hin, &savemode);
+ newmode = savemode | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT;
+ if (is_pw)
+ newmode &= ~ENABLE_ECHO_INPUT;
+ else
+ newmode |= ENABLE_ECHO_INPUT;
+ SetConsoleMode(hin, newmode);
+
+ WriteFile(hout, prompt, strlen(prompt), &i, NULL);
+ ReadFile(hin, str, maxlen - 1, &i, NULL);
+
+ SetConsoleMode(hin, savemode);
+
+ if ((int) i > maxlen)
+ i = maxlen - 1;
+ else
+ i = i - 2;
+ str[i] = '\0';
+
+ if (is_pw)
+ WriteFile(hout, "\r\n", 2, &i, NULL);
+
+ return 1;
+}
+
+/*
+ * Initialize the Win$ock driver.
+ */
+static void init_winsock(void)
+{
+ WORD winsock_ver;
+ WSADATA wsadata;
+
+ winsock_ver = MAKEWORD(1, 1);
+ if (WSAStartup(winsock_ver, &wsadata)) {
+ fprintf(stderr, "Unable to initialise WinSock");
+ exit(1);
+ }
+ if (LOBYTE(wsadata.wVersion) != 1 || HIBYTE(wsadata.wVersion) != 1) {
+ fprintf(stderr, "WinSock version is incompatible with 1.1");
+ exit(1);
+ }
+}
+
+/*
+ * Short description of parameters.
+ */
+static void usage(void)
+{
+ printf("PuTTY Secure File Transfer (SFTP) client\n");
+ printf("%s\n", ver);
+ printf("Usage: psftp [options] user@host\n");
+ printf("Options:\n");
+ printf(" -b file use specified batchfile\n");
+ printf(" -bc output batchfile commands\n");
+ printf(" -be don't stop batchfile processing if errors\n");
+ printf(" -v show verbose messages\n");
+ printf(" -P port connect to specified port\n");
+ printf(" -pw passw login with specified password\n");
+ exit(1);
+}
+
+/*
+ * Connect to a host.
+ */
+static int psftp_connect(char *userhost, char *user, int portnumber)
+{
+ char *host, *realhost;
+ char *err;
+
+ /* Separate host and username */
+ host = userhost;
+ host = strrchr(host, '@');
+ if (host == NULL) {
+ host = userhost;
+ } else {
+ *host++ = '\0';
+ if (user) {
+ printf("psftp: multiple usernames specified; using \"%s\"\n",
+ user);
+ } else
+ user = userhost;
+ }
+
+ /* Try to load settings for this host */
+ do_defaults(host, &cfg);
+ if (cfg.host[0] == '\0') {
+ /* No settings for this host; use defaults */
+ do_defaults(NULL, &cfg);
+ strncpy(cfg.host, host, sizeof(cfg.host) - 1);
+ cfg.host[sizeof(cfg.host) - 1] = '\0';
+ cfg.port = 22;
+ }
+
+ /*
+ * 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);