Adding upstream version 3.3.0+dfsg1.upstream/3.3.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 299 insertions, 0 deletions

diff --git a/libfreerdp/utils/passphrase.c b/libfreerdp/utils/passphrase.c
new file mode 100644
index 0000000..016da79
--- /dev/null
+++ b/libfreerdp/utils/passphrase.c
@@ -0,0 +1,299 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Passphrase Handling Utils
+ *
+ * Copyright 2011 Shea Levy <shea@shealevy.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+#include <freerdp/freerdp.h>
+
+#include <errno.h>
+#include <freerdp/utils/passphrase.h>
+
+#ifdef _WIN32
+
+#include <stdio.h>
+#include <io.h>
+#include <conio.h>
+#include <wincred.h>
+
+static char read_chr(FILE* f)
+{
+	char chr;
+	const BOOL isTty = _isatty(_fileno(f));
+	if (isTty)
+		return fgetc(f);
+	if (fscanf_s(f, "%c", &chr, (UINT32)sizeof(char)) && !feof(f))
+		return chr;
+	return 0;
+}
+
+int freerdp_interruptible_getc(rdpContext* context, FILE* f)
+{
+	return read_chr(f);
+}
+
+char* freerdp_passphrase_read(rdpContext* context, const char* prompt, char* buf, size_t bufsiz,
+                              int from_stdin)
+{
+	WCHAR UserNameW[CREDUI_MAX_USERNAME_LENGTH + 1] = { 'p', 'r', 'e', 'f', 'i',
+		                                                'l', 'l', 'e', 'd', '\0' };
+	WCHAR PasswordW[CREDUI_MAX_PASSWORD_LENGTH + 1] = { 0 };
+	BOOL fSave = FALSE;
+	DWORD dwFlags = 0;
+	WCHAR* promptW = ConvertUtf8ToWCharAlloc(prompt, NULL);
+	const DWORD status =
+	    CredUICmdLinePromptForCredentialsW(promptW, NULL, 0, UserNameW, ARRAYSIZE(UserNameW),
+	                                       PasswordW, ARRAYSIZE(PasswordW), &fSave, dwFlags);
+	free(promptW);
+	if (ConvertWCharNToUtf8(PasswordW, ARRAYSIZE(PasswordW), buf, bufsiz) < 0)
+		return NULL;
+	return buf;
+}
+
+#elif !defined(ANDROID)
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <termios.h>
+#include <unistd.h>
+#include <freerdp/utils/signal.h>
+
+#if defined(WINPR_HAVE_POLL_H) && !defined(__APPLE__)
+#include <poll.h>
+#else
+#include <time.h>
+#include <sys/select.h>
+#endif
+
+static int wait_for_fd(int fd, int timeout)
+{
+	int status = 0;
+#if defined(WINPR_HAVE_POLL_H) && !defined(__APPLE__)
+	struct pollfd pollset = { 0 };
+	pollset.fd = fd;
+	pollset.events = POLLIN;
+	pollset.revents = 0;
+
+	do
+	{
+		status = poll(&pollset, 1, timeout);
+	} while ((status < 0) && (errno == EINTR));
+
+#else
+	fd_set rset = { 0 };
+	struct timeval tv = { 0 };
+	FD_ZERO(&rset);
+	FD_SET(fd, &rset);
+
+	if (timeout)
+	{
+		tv.tv_sec = timeout / 1000;
+		tv.tv_usec = (timeout % 1000) * 1000;
+	}
+
+	do
+	{
+		status = select(fd + 1, &rset, NULL, NULL, timeout ? &tv : NULL);
+	} while ((status < 0) && (errno == EINTR));
+
+#endif
+	return status;
+}
+
+static void replace_char(char* buffer, size_t buffer_len, const char* toreplace)
+{
+	while (*toreplace != '\0')
+	{
+		char* ptr = NULL;
+		while ((ptr = strrchr(buffer, *toreplace)) != NULL)
+			*ptr = '\0';
+		toreplace++;
+	}
+}
+
+char* freerdp_passphrase_read(rdpContext* context, const char* prompt, char* buf, size_t bufsiz,
+                              int from_stdin)
+{
+	BOOL terminal_needs_reset = FALSE;
+	char term_name[L_ctermid] = { 0 };
+	int term_file = 0;
+
+	FILE* fout = NULL;
+
+	if (bufsiz == 0)
+	{
+		errno = EINVAL;
+		return NULL;
+	}
+
+	ctermid(term_name);
+	int terminal_fildes = 0;
+	if (from_stdin || strcmp(term_name, "") == 0 || (term_file = open(term_name, O_RDWR)) == -1)
+	{
+		fout = stdout;
+		terminal_fildes = STDIN_FILENO;
+	}
+	else
+	{
+		fout = fdopen(term_file, "w");
+		terminal_fildes = term_file;
+	}
+
+	struct termios orig_flags = { 0 };
+	if (tcgetattr(terminal_fildes, &orig_flags) != -1)
+	{
+		struct termios new_flags = { 0 };
+		new_flags = orig_flags;
+		new_flags.c_lflag &= ~ECHO;
+		new_flags.c_lflag |= ECHONL;
+		terminal_needs_reset = TRUE;
+		if (tcsetattr(terminal_fildes, TCSAFLUSH, &new_flags) == -1)
+			terminal_needs_reset = FALSE;
+	}
+
+	FILE* fp = fdopen(terminal_fildes, "r");
+	if (!fp)
+		goto error;
+
+	fprintf(fout, "%s", prompt);
+	fflush(fout);
+
+	char* ptr = NULL;
+	size_t ptr_len = 0;
+
+	const SSIZE_T res = freerdp_interruptible_get_line(context, &ptr, &ptr_len, fp);
+	if (res < 0)
+		goto error;
+	replace_char(ptr, ptr_len, "\r\n");
+
+	strncpy(buf, ptr, MIN(bufsiz, ptr_len));
+	free(ptr);
+	if (terminal_needs_reset)
+	{
+		if (tcsetattr(terminal_fildes, TCSAFLUSH, &orig_flags) == -1)
+			goto error;
+	}
+
+	if (terminal_fildes != STDIN_FILENO)
+	{
+		if (fclose(fp) == -1)
+			goto error;
+	}
+
+	return buf;
+
+error:
+{
+	int saved_errno = errno;
+	if (terminal_needs_reset)
+		tcsetattr(terminal_fildes, TCSAFLUSH, &orig_flags);
+	if (terminal_fildes != STDIN_FILENO)
+	{
+		if (fp)
+			fclose(fp);
+	}
+	errno = saved_errno;
+	return NULL;
+}
+}
+
+int freerdp_interruptible_getc(rdpContext* context, FILE* f)
+{
+	int rc = EOF;
+	const int fd = fileno(f);
+
+	const int orig = fcntl(fd, F_GETFL);
+	fcntl(fd, F_SETFL, orig | O_NONBLOCK);
+	do
+	{
+		const int res = wait_for_fd(fd, 10);
+		if (res != 0)
+		{
+			char c = 0;
+			const ssize_t rd = read(fd, &c, 1);
+			if (rd == 1)
+				rc = c;
+			break;
+		}
+	} while (!freerdp_shall_disconnect_context(context));
+
+	fcntl(fd, F_SETFL, orig);
+	return rc;
+}
+
+#else
+
+char* freerdp_passphrase_read(rdpContext* context, const char* prompt, char* buf, size_t bufsiz,
+                              int from_stdin)
+{
+	return NULL;
+}
+
+int freerdp_interruptible_getc(rdpContext* context, FILE* f)
+{
+	return EOF;
+}
+#endif
+
+SSIZE_T freerdp_interruptible_get_line(rdpContext* context, char** plineptr, size_t* psize,
+                                       FILE* stream)
+{
+	int c = 0;
+	char* n = NULL;
+	size_t step = 32;
+	size_t used = 0;
+	char* ptr = NULL;
+	size_t len = 0;
+
+	if (!plineptr || !psize)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+
+	do
+	{
+		if (used + 2 >= len)
+		{
+			len += step;
+			n = realloc(ptr, len);
+
+			if (!n)
+			{
+				return -1;
+			}
+
+			ptr = n;
+		}
+
+		c = freerdp_interruptible_getc(context, stream);
+		if (c != EOF)
+			ptr[used++] = (char)c;
+	} while ((c != '\n') && (c != '\r') && (c != EOF));
+
+	ptr[used] = '\0';
+	if (c == EOF)
+	{
+		free(ptr);
+		return EOF;
+	}
+	*plineptr = ptr;
+	*psize = used;
+	return used;
+}