[u/mdw/putty] / windows / winsftp.c

/*
 * winsftp.c: the Windows-specific parts of PSFTP and PSCP.
 */

#include <assert.h>

#include "putty.h"
#include "psftp.h"

/* ----------------------------------------------------------------------
 * Interface to GUI driver program.
 */

/* This is just a base value from which the main message numbers are
 * derived. */
#define   WM_APP_BASE		0x8000

/* These two pass a single character value in wParam. They represent
 * the visible output from PSCP. */
#define   WM_STD_OUT_CHAR	( WM_APP_BASE+400 )
#define   WM_STD_ERR_CHAR	( WM_APP_BASE+401 )

/* These pass a transfer status update. WM_STATS_CHAR passes a single
 * character in wParam, and is called repeatedly to pass the name of
 * the file, terminated with "\n". WM_STATS_SIZE passes the size of
 * the file being transferred in wParam. WM_STATS_ELAPSED is called
 * to pass the elapsed time (in seconds) in wParam, and
 * WM_STATS_PERCENT passes the percentage of the transfer which is
 * complete, also in wParam. */
#define   WM_STATS_CHAR		( WM_APP_BASE+402 )
#define   WM_STATS_SIZE 	( WM_APP_BASE+403 )
#define   WM_STATS_PERCENT	( WM_APP_BASE+404 )
#define   WM_STATS_ELAPSED	( WM_APP_BASE+405 )

/* These are used at the end of a run to pass an error code in
 * wParam: zero means success, nonzero means failure. WM_RET_ERR_CNT
 * is used after a copy, and WM_LS_RET_ERR_CNT is used after a file
 * list operation. */
#define   WM_RET_ERR_CNT	( WM_APP_BASE+406 )
#define   WM_LS_RET_ERR_CNT	( WM_APP_BASE+407 )

/* More transfer status update messages. WM_STATS_DONE passes the
 * number of bytes sent so far in wParam. WM_STATS_ETA passes the
 * estimated time to completion (in seconds). WM_STATS_RATEBS passes
 * the average transfer rate (in bytes per second). */
#define   WM_STATS_DONE		( WM_APP_BASE+408 )
#define   WM_STATS_ETA		( WM_APP_BASE+409 )
#define   WM_STATS_RATEBS	( WM_APP_BASE+410 )

#define NAME_STR_MAX 2048
static char statname[NAME_STR_MAX + 1];
static unsigned long statsize = 0;
static unsigned long statdone = 0;
static unsigned long stateta = 0;
static unsigned long statratebs = 0;
static int statperct = 0;
static unsigned long statelapsed = 0;

static HWND gui_hwnd = NULL;

static void send_msg(HWND h, UINT message, WPARAM wParam)
{
    while (!PostMessage(h, message, wParam, 0))
	SleepEx(1000, TRUE);
}

void gui_send_char(int is_stderr, int c)
{
    unsigned int msg_id = WM_STD_OUT_CHAR;
    if (is_stderr)
	msg_id = WM_STD_ERR_CHAR;
    send_msg(gui_hwnd, msg_id, (WPARAM) c);
}

void gui_send_errcount(int list, int errs)
{
    unsigned int msg_id = WM_RET_ERR_CNT;
    if (list)
	msg_id = WM_LS_RET_ERR_CNT;
    while (!PostMessage(gui_hwnd, msg_id, (WPARAM) errs, 0))
	SleepEx(1000, TRUE);
}

void gui_update_stats(char *name, unsigned long size,
		      int percentage, unsigned long elapsed,
		      unsigned long done, unsigned long eta,
		      unsigned long ratebs)
{
    unsigned int i;

    if (strcmp(name, statname) != 0) {
	for (i = 0; i < strlen(name); ++i)
	    send_msg(gui_hwnd, WM_STATS_CHAR, (WPARAM) name[i]);
	send_msg(gui_hwnd, WM_STATS_CHAR, (WPARAM) '\n');
	strcpy(statname, name);
    }
    if (statsize != size) {
	send_msg(gui_hwnd, WM_STATS_SIZE, (WPARAM) size);
	statsize = size;
    }
    if (statdone != done) {
	send_msg(gui_hwnd, WM_STATS_DONE, (WPARAM) done);
	statdone = done;
    }
    if (stateta != eta) {
	send_msg(gui_hwnd, WM_STATS_ETA, (WPARAM) eta);
	stateta = eta;
    }
    if (statratebs != ratebs) {
	send_msg(gui_hwnd, WM_STATS_RATEBS, (WPARAM) ratebs);
	statratebs = ratebs;
    }
    if (statelapsed != elapsed) {
	send_msg(gui_hwnd, WM_STATS_ELAPSED, (WPARAM) elapsed);
	statelapsed = elapsed;
    }
    if (statperct != percentage) {
	send_msg(gui_hwnd, WM_STATS_PERCENT, (WPARAM) percentage);
	statperct = percentage;
    }
}

void gui_enable(char *arg)
{
    gui_hwnd = (HWND) atoi(arg);
}

char *get_ttymode(void *frontend, const char *mode) { return NULL; }

/* ----------------------------------------------------------------------
 * File access abstraction.
 */

/*
 * Set local current directory. Returns NULL on success, or else an
 * error message which must be freed after printing.
 */
char *psftp_lcd(char *dir)
{
    char *ret = NULL;

    if (!SetCurrentDirectory(dir)) {
	LPVOID message;
	int i;
	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
		      FORMAT_MESSAGE_FROM_SYSTEM |
		      FORMAT_MESSAGE_IGNORE_INSERTS,
		      NULL, GetLastError(),
		      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		      (LPTSTR)&message, 0, NULL);
	i = strcspn((char *)message, "\n");
	ret = dupprintf("%.*s", i, (LPCTSTR)message);
	LocalFree(message);
    }

    return ret;
}

/*
 * Get local current directory. Returns a string which must be
 * freed.
 */
char *psftp_getcwd(void)
{
    char *ret = snewn(256, char);
    int len = GetCurrentDirectory(256, ret);
    if (len > 256)
	ret = sresize(ret, len, char);
    GetCurrentDirectory(len, ret);
    return ret;
}

#define TIME_POSIX_TO_WIN(t, ft) (*(LONGLONG*)&(ft) = \
	((LONGLONG) (t) + (LONGLONG) 11644473600) * (LONGLONG) 10000000)
#define TIME_WIN_TO_POSIX(ft, t) ((t) = (unsigned long) \
	((*(LONGLONG*)&(ft)) / (LONGLONG) 10000000 - (LONGLONG) 11644473600))

struct RFile {
    HANDLE h;
};

RFile *open_existing_file(char *name, unsigned long *size,
			  unsigned long *mtime, unsigned long *atime)
{
    HANDLE h;
    RFile *ret;

    h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL,
		   OPEN_EXISTING, 0, 0);
    if (h == INVALID_HANDLE_VALUE)
	return NULL;

    ret = snew(RFile);
    ret->h = h;

    if (size)
	*size = GetFileSize(h, NULL);

    if (mtime || atime) {
	FILETIME actime, wrtime;
	GetFileTime(h, NULL, &actime, &wrtime);
	if (atime)
	    TIME_WIN_TO_POSIX(actime, *atime);
	if (mtime)
	    TIME_WIN_TO_POSIX(wrtime, *mtime);
    }

    return ret;
}

int read_from_file(RFile *f, void *buffer, int length)
{
    int ret, read;
    ret = ReadFile(f->h, buffer, length, &read, NULL);
    if (!ret)
	return -1;		       /* error */
    else
	return read;
}

void close_rfile(RFile *f)
{
    CloseHandle(f->h);
    sfree(f);
}

struct WFile {
    HANDLE h;
};

WFile *open_new_file(char *name)
{
    HANDLE h;
    WFile *ret;

    h = CreateFile(name, GENERIC_WRITE, 0, NULL,
		   CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
    if (h == INVALID_HANDLE_VALUE)
	return NULL;

    ret = snew(WFile);
    ret->h = h;

    return ret;
}

int write_to_file(WFile *f, void *buffer, int length)
{
    int ret, written;
    ret = WriteFile(f->h, buffer, length, &written, NULL);
    if (!ret)
	return -1;		       /* error */
    else
	return written;
}

void set_file_times(WFile *f, unsigned long mtime, unsigned long atime)
{
    FILETIME actime, wrtime;
    TIME_POSIX_TO_WIN(atime, actime);
    TIME_POSIX_TO_WIN(mtime, wrtime);
    SetFileTime(f->h, NULL, &actime, &wrtime);
}

void close_wfile(WFile *f)
{
    CloseHandle(f->h);
    sfree(f);
}

int file_type(char *name)
{
    DWORD attr;
    attr = GetFileAttributes(name);
    /* We know of no `weird' files under Windows. */
    if (attr == (DWORD)-1)
	return FILE_TYPE_NONEXISTENT;
    else if (attr & FILE_ATTRIBUTE_DIRECTORY)
	return FILE_TYPE_DIRECTORY;
    else
	return FILE_TYPE_FILE;
}

struct DirHandle {
    HANDLE h;
    char *name;
};

DirHandle *open_directory(char *name)
{
    HANDLE h;
    WIN32_FIND_DATA fdat;
    char *findfile;
    DirHandle *ret;

    /* Enumerate files in dir `foo'. */
    findfile = dupcat(name, "/*", NULL);
    h = FindFirstFile(findfile, &fdat);
    if (h == INVALID_HANDLE_VALUE)
	return NULL;
    sfree(findfile);

    ret = snew(DirHandle);
    ret->h = h;
    ret->name = dupstr(fdat.cFileName);
    return ret;
}

char *read_filename(DirHandle *dir)
{
    do {

	if (!dir->name) {
	    WIN32_FIND_DATA fdat;
	    int ok = FindNextFile(dir->h, &fdat);
	    if (!ok)
		return NULL;
	    else
		dir->name = dupstr(fdat.cFileName);
	}

	assert(dir->name);
	if (dir->name[0] == '.' &&
	    (dir->name[1] == '\0' ||
	     (dir->name[1] == '.' && dir->name[2] == '\0'))) {
	    sfree(dir->name);
	    dir->name = NULL;
	}

    } while (!dir->name);

    if (dir->name) {
	char *ret = dir->name;
	dir->name = NULL;
	return ret;
    } else
	return NULL;
}

void close_directory(DirHandle *dir)
{
    FindClose(dir->h);
    if (dir->name)
	sfree(dir->name);
    sfree(dir);
}

int test_wildcard(char *name, int cmdline)
{
    HANDLE fh;
    WIN32_FIND_DATA fdat;

    /* First see if the exact name exists. */
    if (GetFileAttributes(name) != (DWORD)-1)
	return WCTYPE_FILENAME;

    /* Otherwise see if a wildcard match finds anything. */
    fh = FindFirstFile(name, &fdat);
    if (fh == INVALID_HANDLE_VALUE)
	return WCTYPE_NONEXISTENT;

    FindClose(fh);
    return WCTYPE_WILDCARD;
}

struct WildcardMatcher {
    HANDLE h;
    char *name;
    char *srcpath;
};

/*
 * Return a pointer to the portion of str that comes after the last
 * slash (or backslash or colon, if `local' is TRUE).
 */
static char *stripslashes(char *str, int local)
{
    char *p;

    if (local) {
        p = strchr(str, ':');
        if (p) str = p+1;
    }

    p = strrchr(str, '/');
    if (p) str = p+1;

    if (local) {
	p = strrchr(str, '\\');
	if (p) str = p+1;
    }

    return str;
}

WildcardMatcher *begin_wildcard_matching(char *name)
{
    HANDLE h;
    WIN32_FIND_DATA fdat;
    WildcardMatcher *ret;
    char *last;

    h = FindFirstFile(name, &fdat);
    if (h == INVALID_HANDLE_VALUE)
	return NULL;

    ret = snew(WildcardMatcher);
    ret->h = h;
    ret->srcpath = dupstr(name);
    last = stripslashes(ret->srcpath, 1);
    *last = '\0';
    if (fdat.cFileName[0] == '.' &&
	(fdat.cFileName[1] == '\0' ||
	 (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
	ret->name = NULL;
    else
	ret->name = dupcat(ret->srcpath, fdat.cFileName, NULL);

    return ret;
}

char *wildcard_get_filename(WildcardMatcher *dir)
{
    while (!dir->name) {
	WIN32_FIND_DATA fdat;
	int ok = FindNextFile(dir->h, &fdat);

	if (!ok)
	    return NULL;

	if (fdat.cFileName[0] == '.' &&
	    (fdat.cFileName[1] == '\0' ||
	     (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
	    dir->name = NULL;
	else
	    dir->name = dupcat(dir->srcpath, fdat.cFileName, NULL);
    }

    if (dir->name) {
	char *ret = dir->name;
	dir->name = NULL;
	return ret;
    } else
	return NULL;
}

void finish_wildcard_matching(WildcardMatcher *dir)
{
    FindClose(dir->h);
    if (dir->name)
	sfree(dir->name);
    sfree(dir->srcpath);
    sfree(dir);
}

int vet_filename(char *name)
{
    if (strchr(name, '/') || strchr(name, '\\') || strchr(name, ':'))
	return FALSE;

    if (!name[strspn(name, ".")])      /* entirely composed of dots */
	return FALSE;

    return TRUE;
}

int create_directory(char *name)
{
    return CreateDirectory(name, NULL) != 0;
}

char *dir_file_cat(char *dir, char *file)
{
    return dupcat(dir, "\\", file, NULL);
}

/* ----------------------------------------------------------------------
 * Platform-specific network handling.
 */

/*
 * Be told what socket we're supposed to be using.
 */
static SOCKET sftp_ssh_socket = INVALID_SOCKET;
static HANDLE netevent = NULL;
char *do_select(SOCKET skt, int startup)
{
    int events;
    if (startup)
	sftp_ssh_socket = skt;
    else
	sftp_ssh_socket = INVALID_SOCKET;

    if (p_WSAEventSelect) {
	if (startup) {
	    events = (FD_CONNECT | FD_READ | FD_WRITE |
		      FD_OOB | FD_CLOSE | FD_ACCEPT);
	    netevent = CreateEvent(NULL, FALSE, FALSE, NULL);
	} else {
	    events = 0;
	}
	if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) {
	    switch (p_WSAGetLastError()) {
	      case WSAENETDOWN:
		return "Network is down";
	      default:
		return "WSAEventSelect(): unknown error";
	    }
	}
    }
    return NULL;
}
extern int select_result(WPARAM, LPARAM);

int do_eventsel_loop(HANDLE other_event)
{
    int n;
    long next, ticks;
    HANDLE handles[2];
    SOCKET *sklist;
    int skcount;
    long now = GETTICKCOUNT();

    if (!netevent) {
	return -1;		       /* doom */
    }

    handles[0] = netevent;
    handles[1] = other_event;

    if (run_timers(now, &next)) {
	ticks = next - GETTICKCOUNT();
	if (ticks < 0) ticks = 0;  /* just in case */
    } else {
	ticks = INFINITE;
    }

    n = MsgWaitForMultipleObjects(other_event ? 2 : 1, handles, FALSE, ticks,
				  QS_POSTMESSAGE);

    if (n == WAIT_OBJECT_0 + 0) {
	WSANETWORKEVENTS things;
	SOCKET socket;
	extern SOCKET first_socket(int *), next_socket(int *);
	extern int select_result(WPARAM, LPARAM);
	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. */
	sklist = snewn(i, 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 (!p_WSAEnumNetworkEvents(socket, NULL, &things)) {
		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);
			select_result(wp, lp);
		    }
	    }
	}

	sfree(sklist);
    }

    if (n == WAIT_TIMEOUT) {
	now = next;
    } else {
	now = GETTICKCOUNT();
    }

    if (other_event && n == WAIT_OBJECT_0 + 1)
	return 1;

    return 0;
}

/*
 * Wait for some network data and process it.
 *
 * We have two variants of this function. One uses select() so that
 * it's compatible with WinSock 1. The other uses WSAEventSelect
 * and MsgWaitForMultipleObjects, so that we can consistently use
 * WSAEventSelect throughout; this enables us to also implement
 * ssh_sftp_get_cmdline() using a parallel mechanism.
 */
int ssh_sftp_loop_iteration(void)
{
    if (sftp_ssh_socket == INVALID_SOCKET)
	return -1;		       /* doom */

    if (p_WSAEventSelect == NULL) {
	fd_set readfds;
	int ret;
	long now = GETTICKCOUNT();

	if (socket_writable(sftp_ssh_socket))
	    select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_WRITE);

	do {
	    long next, ticks;
	    struct timeval tv, *ptv;

	    if (run_timers(now, &next)) {
		ticks = next - GETTICKCOUNT();
		if (ticks <= 0)
		    ticks = 1;	       /* just in case */
		tv.tv_sec = ticks / 1000;
		tv.tv_usec = ticks % 1000 * 1000;
		ptv = &tv;
	    } else {
		ptv = NULL;
	    }

	    FD_ZERO(&readfds);
	    FD_SET(sftp_ssh_socket, &readfds);
	    ret = p_select(1, &readfds, NULL, NULL, ptv);

	    if (ret < 0)
		return -1;		       /* doom */
	    else if (ret == 0)
		now = next;
	    else
		now = GETTICKCOUNT();

	} while (ret == 0);

	select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ);

	return 0;
    } else {
	return do_eventsel_loop(NULL);
    }
}

/*
 * Read a command line from standard input.
 * 
 * In the presence of WinSock 2, we can use WSAEventSelect to
 * mediate between the socket and stdin, meaning we can send
 * keepalives and respond to server events even while waiting at
 * the PSFTP command prompt. Without WS2, we fall back to a simple
 * fgets.
 */
struct command_read_ctx {
    HANDLE event;
    char *line;
};

static DWORD WINAPI command_read_thread(void *param)
{
    struct command_read_ctx *ctx = (struct command_read_ctx *) param;

    ctx->line = fgetline(stdin);

    SetEvent(ctx->event);

    return 0;
}

char *ssh_sftp_get_cmdline(char *prompt, int no_fds_ok)
{
    int ret;
    struct command_read_ctx actx, *ctx = &actx;
    DWORD threadid;

    fputs(prompt, stdout);
    fflush(stdout);

    if ((sftp_ssh_socket == INVALID_SOCKET && no_fds_ok) ||
	p_WSAEventSelect == NULL) {
	return fgetline(stdin);	       /* very simple */
    }

    /*
     * Create a second thread to read from stdin. Process network
     * and timing events until it terminates.
     */
    ctx->event = CreateEvent(NULL, FALSE, FALSE, NULL);
    ctx->line = NULL;

    if (!CreateThread(NULL, 0, command_read_thread,
		      ctx, 0, &threadid)) {
	fprintf(stderr, "Unable to create command input thread\n");
	cleanup_exit(1);
    }

    do {
	ret = do_eventsel_loop(ctx->event);

	/* Error return can only occur if netevent==NULL, and it ain't. */
	assert(ret >= 0);
    } while (ret == 0);

    return ctx->line;
}

/* ----------------------------------------------------------------------
 * Main program. Parse arguments etc.
 */
int main(int argc, char *argv[])
{
    int ret;

    ret = psftp_main(argc, argv);

    return ret;
}
Commit	Line	Data
d6cc41e6	1	/*
799dfcfa	2	* winsftp.c: the Windows-specific parts of PSFTP and PSCP.
d6cc41e6	3	*/
d6cc41e6	4
39934deb	5	#include <assert.h>
39934deb	6
d6cc41e6	7	#include "putty.h"
	8	#include "psftp.h"
	9
799dfcfa	10	/* ----------------------------------------------------------------------
799dfcfa	11	* Interface to GUI driver program.
d6cc41e6	12	*/
799dfcfa	13
	14	/* This is just a base value from which the main message numbers are
	15	* derived. */
	16	#define WM_APP_BASE 0x8000
	17
	18	/* These two pass a single character value in wParam. They represent
	19	* the visible output from PSCP. */
	20	#define WM_STD_OUT_CHAR ( WM_APP_BASE+400 )
	21	#define WM_STD_ERR_CHAR ( WM_APP_BASE+401 )
	22
	23	/* These pass a transfer status update. WM_STATS_CHAR passes a single
	24	* character in wParam, and is called repeatedly to pass the name of
	25	* the file, terminated with "\n". WM_STATS_SIZE passes the size of
	26	* the file being transferred in wParam. WM_STATS_ELAPSED is called
	27	* to pass the elapsed time (in seconds) in wParam, and
	28	* WM_STATS_PERCENT passes the percentage of the transfer which is
	29	* complete, also in wParam. */
	30	#define WM_STATS_CHAR ( WM_APP_BASE+402 )
	31	#define WM_STATS_SIZE ( WM_APP_BASE+403 )
	32	#define WM_STATS_PERCENT ( WM_APP_BASE+404 )
	33	#define WM_STATS_ELAPSED ( WM_APP_BASE+405 )
	34
	35	/* These are used at the end of a run to pass an error code in
	36	* wParam: zero means success, nonzero means failure. WM_RET_ERR_CNT
	37	* is used after a copy, and WM_LS_RET_ERR_CNT is used after a file
	38	* list operation. */
	39	#define WM_RET_ERR_CNT ( WM_APP_BASE+406 )
	40	#define WM_LS_RET_ERR_CNT ( WM_APP_BASE+407 )
	41
	42	/* More transfer status update messages. WM_STATS_DONE passes the
	43	* number of bytes sent so far in wParam. WM_STATS_ETA passes the
	44	* estimated time to completion (in seconds). WM_STATS_RATEBS passes
	45	* the average transfer rate (in bytes per second). */
	46	#define WM_STATS_DONE ( WM_APP_BASE+408 )
	47	#define WM_STATS_ETA ( WM_APP_BASE+409 )
	48	#define WM_STATS_RATEBS ( WM_APP_BASE+410 )
	49
	50	#define NAME_STR_MAX 2048
	51	static char statname[NAME_STR_MAX + 1];
	52	static unsigned long statsize = 0;
	53	static unsigned long statdone = 0;
	54	static unsigned long stateta = 0;
	55	static unsigned long statratebs = 0;
	56	static int statperct = 0;
	57	static unsigned long statelapsed = 0;
	58
	59	static HWND gui_hwnd = NULL;
	60
	61	static void send_msg(HWND h, UINT message, WPARAM wParam)
d6cc41e6	62	{
799dfcfa	63	while (!PostMessage(h, message, wParam, 0))
799dfcfa	64	SleepEx(1000, TRUE);
d6cc41e6	65	}
d6cc41e6	66
799dfcfa	67	void gui_send_char(int is_stderr, int c)
d6cc41e6	68	{
799dfcfa	69	unsigned int msg_id = WM_STD_OUT_CHAR;
	70	if (is_stderr)
	71	msg_id = WM_STD_ERR_CHAR;
	72	send_msg(gui_hwnd, msg_id, (WPARAM) c);
	73	}
d6cc41e6	74
799dfcfa	75	void gui_send_errcount(int list, int errs)
	76	{
	77	unsigned int msg_id = WM_RET_ERR_CNT;
	78	if (list)
	79	msg_id = WM_LS_RET_ERR_CNT;
	80	while (!PostMessage(gui_hwnd, msg_id, (WPARAM) errs, 0))
	81	SleepEx(1000, TRUE);
	82	}
	83
	84	void gui_update_stats(char *name, unsigned long size,
	85	int percentage, unsigned long elapsed,
	86	unsigned long done, unsigned long eta,
	87	unsigned long ratebs)
	88	{
	89	unsigned int i;
	90
	91	if (strcmp(name, statname) != 0) {
	92	for (i = 0; i < strlen(name); ++i)
	93	send_msg(gui_hwnd, WM_STATS_CHAR, (WPARAM) name[i]);
	94	send_msg(gui_hwnd, WM_STATS_CHAR, (WPARAM) '\n');
	95	strcpy(statname, name);
d6cc41e6	96	}
799dfcfa	97	if (statsize != size) {
	98	send_msg(gui_hwnd, WM_STATS_SIZE, (WPARAM) size);
	99	statsize = size;
	100	}
	101	if (statdone != done) {
	102	send_msg(gui_hwnd, WM_STATS_DONE, (WPARAM) done);
	103	statdone = done;
	104	}
	105	if (stateta != eta) {
	106	send_msg(gui_hwnd, WM_STATS_ETA, (WPARAM) eta);
	107	stateta = eta;
	108	}
	109	if (statratebs != ratebs) {
	110	send_msg(gui_hwnd, WM_STATS_RATEBS, (WPARAM) ratebs);
	111	statratebs = ratebs;
d6cc41e6	112	}
799dfcfa	113	if (statelapsed != elapsed) {
	114	send_msg(gui_hwnd, WM_STATS_ELAPSED, (WPARAM) elapsed);
	115	statelapsed = elapsed;
	116	}
	117	if (statperct != percentage) {
	118	send_msg(gui_hwnd, WM_STATS_PERCENT, (WPARAM) percentage);
	119	statperct = percentage;
	120	}
	121	}
	122
	123	void gui_enable(char *arg)
	124	{
	125	gui_hwnd = (HWND) atoi(arg);
d6cc41e6	126	}
c6ccd5c2	127
c6ccd5c2	128	char get_ttymode(void frontend, const char *mode) { return NULL; }
d6cc41e6	129
799dfcfa	130	/* ----------------------------------------------------------------------
	131	* File access abstraction.
	132	*/
	133
d6cc41e6	134	/*
	135	* Set local current directory. Returns NULL on success, or else an
	136	* error message which must be freed after printing.
	137	*/
	138	char psftp_lcd(char dir)
	139	{
	140	char *ret = NULL;
	141
	142	if (!SetCurrentDirectory(dir)) {
	143	LPVOID message;
	144	int i;
	145	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER \|
	146	FORMAT_MESSAGE_FROM_SYSTEM \|
	147	FORMAT_MESSAGE_IGNORE_INSERTS,
	148	NULL, GetLastError(),
	149	MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
	150	(LPTSTR)&message, 0, NULL);
	151	i = strcspn((char *)message, "\n");
	152	ret = dupprintf("%.*s", i, (LPCTSTR)message);
	153	LocalFree(message);
	154	}
	155
	156	return ret;
	157	}
	158
	159	/*
	160	* Get local current directory. Returns a string which must be
	161	* freed.
	162	*/
	163	char *psftp_getcwd(void)
	164	{
	165	char *ret = snewn(256, char);
	166	int len = GetCurrentDirectory(256, ret);
	167	if (len > 256)
	168	ret = sresize(ret, len, char);
	169	GetCurrentDirectory(len, ret);
	170	return ret;
	171	}
	172
799dfcfa	173	#define TIME_POSIX_TO_WIN(t, ft) ((LONGLONG)&(ft) = \
	174	((LONGLONG) (t) + (LONGLONG) 11644473600) * (LONGLONG) 10000000)
	175	#define TIME_WIN_TO_POSIX(ft, t) ((t) = (unsigned long) \
	176	(((LONGLONG)&(ft)) / (LONGLONG) 10000000 - (LONGLONG) 11644473600))
	177
	178	struct RFile {
	179	HANDLE h;
	180	};
	181
	182	RFile open_existing_file(char name, unsigned long *size,
	183	unsigned long mtime, unsigned long atime)
	184	{
	185	HANDLE h;
	186	RFile *ret;
	187
	188	h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL,
	189	OPEN_EXISTING, 0, 0);
	190	if (h == INVALID_HANDLE_VALUE)
	191	return NULL;
	192
	193	ret = snew(RFile);
	194	ret->h = h;
	195
	196	if (size)
	197	*size = GetFileSize(h, NULL);
	198
	199	if (mtime \|\| atime) {
	200	FILETIME actime, wrtime;
	201	GetFileTime(h, NULL, &actime, &wrtime);
	202	if (atime)
	203	TIME_WIN_TO_POSIX(actime, *atime);
	204	if (mtime)
	205	TIME_WIN_TO_POSIX(wrtime, *mtime);
	206	}
	207
	208	return ret;
	209	}
	210
	211	int read_from_file(RFile f, void buffer, int length)
	212	{
	213	int ret, read;
	214	ret = ReadFile(f->h, buffer, length, &read, NULL);
	215	if (!ret)
	216	return -1; /* error */
	217	else
	218	return read;
	219	}
	220
	221	void close_rfile(RFile *f)
	222	{
	223	CloseHandle(f->h);
	224	sfree(f);
	225	}
	226
	227	struct WFile {
	228	HANDLE h;
	229	};
	230
	231	WFile open_new_file(char name)
	232	{
	233	HANDLE h;
	234	WFile *ret;
	235
	236	h = CreateFile(name, GENERIC_WRITE, 0, NULL,
237	CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
238	if (h == INVALID_HANDLE_VALUE)
239	return NULL;
240
241	ret = snew(WFile);
242	ret->h = h;
243
244	return ret;
245	}
246
247	int write_to_file(WFile f, void buffer, int length)
248	{
249	int ret, written;
250	ret = WriteFile(f->h, buffer, length, &written, NULL);
251	if (!ret)
252	return -1; /* error */
253	else
254	return written;
255	}
256
257	void set_file_times(WFile *f, unsigned long mtime, unsigned long atime)
258	{
259	FILETIME actime, wrtime;
260	TIME_POSIX_TO_WIN(atime, actime);
261	TIME_POSIX_TO_WIN(mtime, wrtime);
262	SetFileTime(f->h, NULL, &actime, &wrtime);
263	}
264
265	void close_wfile(WFile *f)
266	{
267	CloseHandle(f->h);
268	sfree(f);
269	}
270
271	int file_type(char *name)
272	{
273	DWORD attr;
274	attr = GetFileAttributes(name);
275	/* We know of no `weird' files under Windows. */
276	if (attr == (DWORD)-1)
277	return FILE_TYPE_NONEXISTENT;
278	else if (attr & FILE_ATTRIBUTE_DIRECTORY)
279	return FILE_TYPE_DIRECTORY;
280	else
281	return FILE_TYPE_FILE;
282	}
283
284	struct DirHandle {
285	HANDLE h;
286	char *name;
287	};
288
289	DirHandle open_directory(char name)
290	{
291	HANDLE h;
292	WIN32_FIND_DATA fdat;
293	char *findfile;
294	DirHandle *ret;
295
8f0ebed4	296	/* Enumerate files in dir `foo'. */
799dfcfa	297	findfile = dupcat(name, "/*", NULL);
	298	h = FindFirstFile(findfile, &fdat);
	299	if (h == INVALID_HANDLE_VALUE)
	300	return NULL;
8c7d710c	301	sfree(findfile);
799dfcfa	302
	303	ret = snew(DirHandle);
	304	ret->h = h;
	305	ret->name = dupstr(fdat.cFileName);
	306	return ret;
	307	}
	308
	309	char read_filename(DirHandle dir)
	310	{
b0e15bb5	311	do {
	312
	313	if (!dir->name) {
	314	WIN32_FIND_DATA fdat;
	315	int ok = FindNextFile(dir->h, &fdat);
	316	if (!ok)
	317	return NULL;
	318	else
	319	dir->name = dupstr(fdat.cFileName);
	320	}
	321
	322	assert(dir->name);
	323	if (dir->name[0] == '.' &&
	324	(dir->name[1] == '\0' \|\|
	325	(dir->name[1] == '.' && dir->name[2] == '\0'))) {
	326	sfree(dir->name);
8c7d710c	327	dir->name = NULL;
b0e15bb5	328	}
	329
	330	} while (!dir->name);
799dfcfa	331
	332	if (dir->name) {
	333	char *ret = dir->name;
	334	dir->name = NULL;
	335	return ret;
	336	} else
	337	return NULL;
	338	}
	339
	340	void close_directory(DirHandle *dir)
	341	{
	342	FindClose(dir->h);
	343	if (dir->name)
	344	sfree(dir->name);
	345	sfree(dir);
	346	}
	347
	348	int test_wildcard(char *name, int cmdline)
	349	{
	350	HANDLE fh;
	351	WIN32_FIND_DATA fdat;
	352
	353	/* First see if the exact name exists. */
	354	if (GetFileAttributes(name) != (DWORD)-1)
	355	return WCTYPE_FILENAME;
	356
	357	/* Otherwise see if a wildcard match finds anything. */
	358	fh = FindFirstFile(name, &fdat);
	359	if (fh == INVALID_HANDLE_VALUE)
	360	return WCTYPE_NONEXISTENT;
	361
	362	FindClose(fh);
	363	return WCTYPE_WILDCARD;
	364	}
	365
	366	struct WildcardMatcher {
	367	HANDLE h;
	368	char *name;
	369	char *srcpath;
	370	};
	371
	372	/*
	373	* Return a pointer to the portion of str that comes after the last
	374	* slash (or backslash or colon, if `local' is TRUE).
	375	*/
	376	static char stripslashes(char str, int local)
	377	{
	378	char *p;
	379
	380	if (local) {
	381	p = strchr(str, ':');
	382	if (p) str = p+1;
	383	}
	384
	385	p = strrchr(str, '/');
	386	if (p) str = p+1;
	387
	388	if (local) {
	389	p = strrchr(str, '\\');
	390	if (p) str = p+1;
	391	}
	392
	393	return str;
	394	}
395
396	WildcardMatcher begin_wildcard_matching(char name)
397	{
398	HANDLE h;
399	WIN32_FIND_DATA fdat;
400	WildcardMatcher *ret;
401	char *last;
402
403	h = FindFirstFile(name, &fdat);
404	if (h == INVALID_HANDLE_VALUE)
405	return NULL;
406
407	ret = snew(WildcardMatcher);
408	ret->h = h;
409	ret->srcpath = dupstr(name);
410	last = stripslashes(ret->srcpath, 1);
411	*last = '\0';
412	if (fdat.cFileName[0] == '.' &&
413	(fdat.cFileName[1] == '\0' \|\|
414	(fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
415	ret->name = NULL;
416	else
417	ret->name = dupcat(ret->srcpath, fdat.cFileName, NULL);
418
419	return ret;
420	}
421
422	char wildcard_get_filename(WildcardMatcher dir)
423	{
424	while (!dir->name) {
425	WIN32_FIND_DATA fdat;
426	int ok = FindNextFile(dir->h, &fdat);
427
428	if (!ok)
429	return NULL;
430
431	if (fdat.cFileName[0] == '.' &&
432	(fdat.cFileName[1] == '\0' \|\|
433	(fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
434	dir->name = NULL;
435	else
436	dir->name = dupcat(dir->srcpath, fdat.cFileName, NULL);
437	}
438
439	if (dir->name) {
440	char *ret = dir->name;
441	dir->name = NULL;
442	return ret;
443	} else
444	return NULL;
445	}
446
447	void finish_wildcard_matching(WildcardMatcher *dir)
448	{
449	FindClose(dir->h);
450	if (dir->name)
451	sfree(dir->name);
452	sfree(dir->srcpath);
453	sfree(dir);
454	}
455
e9d14678	456	int vet_filename(char *name)
	457	{
	458	if (strchr(name, '/') \|\| strchr(name, '\\') \|\| strchr(name, ':'))
	459	return FALSE;
	460
	461	if (!name[strspn(name, ".")]) /* entirely composed of dots */
	462	return FALSE;
	463
	464	return TRUE;
	465	}
	466
799dfcfa	467	int create_directory(char *name)
	468	{
	469	return CreateDirectory(name, NULL) != 0;
	470	}
	471
8c7d710c	472	char dir_file_cat(char dir, char *file)
	473	{
	474	return dupcat(dir, "\\", file, NULL);
	475	}
	476
799dfcfa	477	/* ----------------------------------------------------------------------
	478	* Platform-specific network handling.
	479	*/
	480
	481	/*
	482	* Be told what socket we're supposed to be using.
	483	*/
65857773	484	static SOCKET sftp_ssh_socket = INVALID_SOCKET;
39934deb	485	static HANDLE netevent = NULL;
799dfcfa	486	char *do_select(SOCKET skt, int startup)
799dfcfa	487	{
39934deb	488	int events;
799dfcfa	489	if (startup)
	490	sftp_ssh_socket = skt;
	491	else
	492	sftp_ssh_socket = INVALID_SOCKET;
39934deb	493
	494	if (p_WSAEventSelect) {
	495	if (startup) {
	496	events = (FD_CONNECT \| FD_READ \| FD_WRITE \|
	497	FD_OOB \| FD_CLOSE \| FD_ACCEPT);
	498	netevent = CreateEvent(NULL, FALSE, FALSE, NULL);
	499	} else {
	500	events = 0;
	501	}
	502	if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) {
	503	switch (p_WSAGetLastError()) {
	504	case WSAENETDOWN:
	505	return "Network is down";
	506	default:
	507	return "WSAEventSelect(): unknown error";
	508	}
	509	}
	510	}
799dfcfa	511	return NULL;
	512	}
	513	extern int select_result(WPARAM, LPARAM);
	514
39934deb	515	int do_eventsel_loop(HANDLE other_event)
	516	{
	517	int n;
	518	long next, ticks;
	519	HANDLE handles[2];
	520	SOCKET *sklist;
	521	int skcount;
	522	long now = GETTICKCOUNT();
	523
	524	if (!netevent) {
	525	return -1; /* doom */
	526	}
	527
	528	handles[0] = netevent;
	529	handles[1] = other_event;
	530
	531	if (run_timers(now, &next)) {
	532	ticks = next - GETTICKCOUNT();
	533	if (ticks < 0) ticks = 0; /* just in case */
	534	} else {
	535	ticks = INFINITE;
	536	}
	537
	538	n = MsgWaitForMultipleObjects(other_event ? 2 : 1, handles, FALSE, ticks,
	539	QS_POSTMESSAGE);
	540
	541	if (n == WAIT_OBJECT_0 + 0) {
	542	WSANETWORKEVENTS things;
	543	SOCKET socket;
	544	extern SOCKET first_socket(int ), next_socket(int );
	545	extern int select_result(WPARAM, LPARAM);
	546	int i, socketstate;
	547
	548	/*
	549	* We must not call select_result() for any socket
	550	* until we have finished enumerating within the
	551	* tree. This is because select_result() may close
	552	* the socket and modify the tree.
	553	*/
	554	/* Count the active sockets. */
	555	i = 0;
	556	for (socket = first_socket(&socketstate);
	557	socket != INVALID_SOCKET;
	558	socket = next_socket(&socketstate)) i++;
	559
	560	/* Expand the buffer if necessary. */
	561	sklist = snewn(i, SOCKET);
	562
	563	/* Retrieve the sockets into sklist. */
	564	skcount = 0;
	565	for (socket = first_socket(&socketstate);
	566	socket != INVALID_SOCKET;
	567	socket = next_socket(&socketstate)) {
	568	sklist[skcount++] = socket;
	569	}
	570
	571	/* Now we're done enumerating; go through the list. */
	572	for (i = 0; i < skcount; i++) {
	573	WPARAM wp;
	574	socket = sklist[i];
	575	wp = (WPARAM) socket;
	576	if (!p_WSAEnumNetworkEvents(socket, NULL, &things)) {
	577	static const struct { int bit, mask; } eventtypes[] = {
	578	{FD_CONNECT_BIT, FD_CONNECT},
579	{FD_READ_BIT, FD_READ},
580	{FD_CLOSE_BIT, FD_CLOSE},
581	{FD_OOB_BIT, FD_OOB},
582	{FD_WRITE_BIT, FD_WRITE},
583	{FD_ACCEPT_BIT, FD_ACCEPT},
584	};
585	int e;
586
587	noise_ultralight(socket);
588	noise_ultralight(things.lNetworkEvents);
589
590	for (e = 0; e < lenof(eventtypes); e++)
591	if (things.lNetworkEvents & eventtypes[e].mask) {
592	LPARAM lp;
593	int err = things.iErrorCode[eventtypes[e].bit];
594	lp = WSAMAKESELECTREPLY(eventtypes[e].mask, err);
595	select_result(wp, lp);
596	}
597	}
598	}
599
600	sfree(sklist);
601	}
602
603	if (n == WAIT_TIMEOUT) {
604	now = next;
605	} else {
606	now = GETTICKCOUNT();
607	}
608
609	if (other_event && n == WAIT_OBJECT_0 + 1)
610	return 1;
611
612	return 0;
613	}
614
799dfcfa	615	/*
d6cc41e6	616	* Wait for some network data and process it.
39934deb	617	*
	618	* We have two variants of this function. One uses select() so that
	619	* it's compatible with WinSock 1. The other uses WSAEventSelect
	620	* and MsgWaitForMultipleObjects, so that we can consistently use
	621	* WSAEventSelect throughout; this enables us to also implement
	622	* ssh_sftp_get_cmdline() using a parallel mechanism.
d6cc41e6	623	*/
	624	int ssh_sftp_loop_iteration(void)
	625	{
d6cc41e6	626	if (sftp_ssh_socket == INVALID_SOCKET)
	627	return -1; /* doom */
	628
39934deb	629	if (p_WSAEventSelect == NULL) {
	630	fd_set readfds;
	631	int ret;
	632	long now = GETTICKCOUNT();
	633
	634	if (socket_writable(sftp_ssh_socket))
	635	select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_WRITE);
	636
	637	do {
	638	long next, ticks;
	639	struct timeval tv, *ptv;
	640
	641	if (run_timers(now, &next)) {
	642	ticks = next - GETTICKCOUNT();
	643	if (ticks <= 0)
	644	ticks = 1; /* just in case */
	645	tv.tv_sec = ticks / 1000;
	646	tv.tv_usec = ticks % 1000 * 1000;
	647	ptv = &tv;
	648	} else {
	649	ptv = NULL;
	650	}
	651
	652	FD_ZERO(&readfds);
	653	FD_SET(sftp_ssh_socket, &readfds);
	654	ret = p_select(1, &readfds, NULL, NULL, ptv);
	655
	656	if (ret < 0)
	657	return -1; /* doom */
	658	else if (ret == 0)
	659	now = next;
	660	else
	661	now = GETTICKCOUNT();
	662
	663	} while (ret == 0);
	664
	665	select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ);
	666
	667	return 0;
	668	} else {
	669	return do_eventsel_loop(NULL);
	670	}
	671	}
	672
	673	/*
	674	* Read a command line from standard input.
	675	*
	676	* In the presence of WinSock 2, we can use WSAEventSelect to
	677	* mediate between the socket and stdin, meaning we can send
	678	* keepalives and respond to server events even while waiting at
	679	* the PSFTP command prompt. Without WS2, we fall back to a simple
	680	* fgets.
	681	*/
	682	struct command_read_ctx {
	683	HANDLE event;
	684	char *line;
	685	};
	686
	687	static DWORD WINAPI command_read_thread(void *param)
	688	{
	689	struct command_read_ctx ctx = (struct command_read_ctx ) param;
	690
	691	ctx->line = fgetline(stdin);
	692
693	SetEvent(ctx->event);
d6cc41e6	694
d6cc41e6	695	return 0;
	696	}
	697
65857773	698	char ssh_sftp_get_cmdline(char prompt, int no_fds_ok)
39934deb	699	{
	700	int ret;
	701	struct command_read_ctx actx, *ctx = &actx;
	702	DWORD threadid;
	703
	704	fputs(prompt, stdout);
	705	fflush(stdout);
	706
65857773	707	if ((sftp_ssh_socket == INVALID_SOCKET && no_fds_ok) \|\|
65857773	708	p_WSAEventSelect == NULL) {
39934deb	709	return fgetline(stdin); /* very simple */
	710	}
	711
	712	/*
	713	* Create a second thread to read from stdin. Process network
	714	* and timing events until it terminates.
	715	*/
	716	ctx->event = CreateEvent(NULL, FALSE, FALSE, NULL);
	717	ctx->line = NULL;
	718
	719	if (!CreateThread(NULL, 0, command_read_thread,
	720	ctx, 0, &threadid)) {
	721	fprintf(stderr, "Unable to create command input thread\n");
	722	cleanup_exit(1);
	723	}
	724
	725	do {
	726	ret = do_eventsel_loop(ctx->event);
	727
	728	/* Error return can only occur if netevent==NULL, and it ain't. */
	729	assert(ret >= 0);
	730	} while (ret == 0);
	731
	732	return ctx->line;
	733	}
	734
799dfcfa	735	/* ----------------------------------------------------------------------
d6cc41e6	736	* Main program. Parse arguments etc.
	737	*/
	738	int main(int argc, char *argv[])
	739	{
	740	int ret;
	741
d6cc41e6	742	ret = psftp_main(argc, argv);
d6cc41e6	743
	744	return ret;
	745	}