mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-07-20 12:27:09 -05:00
Rename most of the platform source files.
This gets rid of all those annoying 'win', 'ux' and 'gtk' prefixes which made filenames annoying to type and to tab-complete. Also, as with my other recent renaming sprees, I've taken the opportunity to expand and clarify some of the names so that they're not such cryptic abbreviations.
This commit is contained in:
Simon Tatham
650
windows/sftp.c
Normal file
650
windows/sftp.c
Normal file
@ -0,0 +1,650 @@
|
||||
/*
|
||||
* winsftp.c: the Windows-specific parts of PSFTP and PSCP.
|
||||
*/
|
||||
|
||||
#include <winsock2.h> /* need to put this first, for winelib builds */
|
||||
#include <assert.h>
|
||||
|
||||
#define NEED_DECLARATION_OF_SELECT
|
||||
|
||||
#include "putty.h"
|
||||
#include "psftp.h"
|
||||
#include "ssh.h"
|
||||
#include "security-api.h"
|
||||
|
||||
int filexfer_get_userpass_input(Seat *seat, prompts_t *p, bufchain *input)
|
||||
{
|
||||
int ret;
|
||||
ret = cmdline_get_passwd_input(p);
|
||||
if (ret == -1)
|
||||
ret = console_get_userpass_input(p);
|
||||
return ret;
|
||||
}
|
||||
|
||||
void platform_get_x11_auth(struct X11Display *display, Conf *conf)
|
||||
{
|
||||
/* Do nothing, therefore no auth. */
|
||||
}
|
||||
const bool platform_uses_x11_unix_by_default = true;
|
||||
|
||||
/* ----------------------------------------------------------------------
|
||||
* 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);
|
||||
size_t len = GetCurrentDirectory(256, ret);
|
||||
if (len > 256)
|
||||
ret = sresize(ret, len, char);
|
||||
GetCurrentDirectory(len, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static inline uint64_t uint64_from_words(uint32_t hi, uint32_t lo)
|
||||
{
|
||||
return (((uint64_t)hi) << 32) | lo;
|
||||
}
|
||||
|
||||
#define TIME_POSIX_TO_WIN(t, ft) do { \
|
||||
ULARGE_INTEGER uli; \
|
||||
uli.QuadPart = ((ULONGLONG)(t) + 11644473600ull) * 10000000ull; \
|
||||
(ft).dwLowDateTime = uli.LowPart; \
|
||||
(ft).dwHighDateTime = uli.HighPart; \
|
||||
} while(0)
|
||||
#define TIME_WIN_TO_POSIX(ft, t) do { \
|
||||
ULARGE_INTEGER uli; \
|
||||
uli.LowPart = (ft).dwLowDateTime; \
|
||||
uli.HighPart = (ft).dwHighDateTime; \
|
||||
uli.QuadPart = uli.QuadPart / 10000000ull - 11644473600ull; \
|
||||
(t) = (unsigned long) uli.QuadPart; \
|
||||
} while(0)
|
||||
|
||||
struct RFile {
|
||||
HANDLE h;
|
||||
};
|
||||
|
||||
RFile *open_existing_file(const char *name, uint64_t *size,
|
||||
unsigned long *mtime, unsigned long *atime,
|
||||
long *perms)
|
||||
{
|
||||
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) {
|
||||
DWORD lo, hi;
|
||||
lo = GetFileSize(h, &hi);
|
||||
*size = uint64_from_words(hi, lo);
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
if (perms)
|
||||
*perms = -1;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int read_from_file(RFile *f, void *buffer, int length)
|
||||
{
|
||||
DWORD read;
|
||||
if (!ReadFile(f->h, buffer, length, &read, NULL))
|
||||
return -1; /* error */
|
||||
else
|
||||
return read;
|
||||
}
|
||||
|
||||
void close_rfile(RFile *f)
|
||||
{
|
||||
CloseHandle(f->h);
|
||||
sfree(f);
|
||||
}
|
||||
|
||||
struct WFile {
|
||||
HANDLE h;
|
||||
};
|
||||
|
||||
WFile *open_new_file(const char *name, long perms)
|
||||
{
|
||||
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;
|
||||
}
|
||||
|
||||
WFile *open_existing_wfile(const char *name, uint64_t *size)
|
||||
{
|
||||
HANDLE h;
|
||||
WFile *ret;
|
||||
|
||||
h = CreateFile(name, GENERIC_WRITE, FILE_SHARE_READ, NULL,
|
||||
OPEN_EXISTING, 0, 0);
|
||||
if (h == INVALID_HANDLE_VALUE)
|
||||
return NULL;
|
||||
|
||||
ret = snew(WFile);
|
||||
ret->h = h;
|
||||
|
||||
if (size) {
|
||||
DWORD lo, hi;
|
||||
lo = GetFileSize(h, &hi);
|
||||
*size = uint64_from_words(hi, lo);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int write_to_file(WFile *f, void *buffer, int length)
|
||||
{
|
||||
DWORD written;
|
||||
if (!WriteFile(f->h, buffer, length, &written, NULL))
|
||||
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);
|
||||
}
|
||||
|
||||
/* Seek offset bytes through file, from whence, where whence is
|
||||
FROM_START, FROM_CURRENT, or FROM_END */
|
||||
int seek_file(WFile *f, uint64_t offset, int whence)
|
||||
{
|
||||
DWORD movemethod;
|
||||
|
||||
switch (whence) {
|
||||
case FROM_START:
|
||||
movemethod = FILE_BEGIN;
|
||||
break;
|
||||
case FROM_CURRENT:
|
||||
movemethod = FILE_CURRENT;
|
||||
break;
|
||||
case FROM_END:
|
||||
movemethod = FILE_END;
|
||||
break;
|
||||
default:
|
||||
return -1;
|
||||
}
|
||||
|
||||
{
|
||||
LONG lo = offset & 0xFFFFFFFFU, hi = offset >> 32;
|
||||
SetFilePointer(f->h, lo, &hi, movemethod);
|
||||
}
|
||||
|
||||
if (GetLastError() != NO_ERROR)
|
||||
return -1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
uint64_t get_file_posn(WFile *f)
|
||||
{
|
||||
LONG lo, hi = 0;
|
||||
|
||||
lo = SetFilePointer(f->h, 0L, &hi, FILE_CURRENT);
|
||||
return uint64_from_words(hi, lo);
|
||||
}
|
||||
|
||||
int file_type(const 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(const char *name, const char **errmsg)
|
||||
{
|
||||
HANDLE h;
|
||||
WIN32_FIND_DATA fdat;
|
||||
char *findfile;
|
||||
DirHandle *ret;
|
||||
|
||||
/* Enumerate files in dir `foo'. */
|
||||
findfile = dupcat(name, "/*");
|
||||
h = FindFirstFile(findfile, &fdat);
|
||||
if (h == INVALID_HANDLE_VALUE) {
|
||||
*errmsg = win_strerror(GetLastError());
|
||||
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;
|
||||
if (!FindNextFile(dir->h, &fdat))
|
||||
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(const char *name, bool 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;
|
||||
};
|
||||
|
||||
char *stripslashes(const char *str, bool local)
|
||||
{
|
||||
char *p;
|
||||
|
||||
/*
|
||||
* On Windows, \ / : are all path component separators.
|
||||
*/
|
||||
|
||||
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 (char *)str;
|
||||
}
|
||||
|
||||
WildcardMatcher *begin_wildcard_matching(const 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, true);
|
||||
*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);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
char *wildcard_get_filename(WildcardMatcher *dir)
|
||||
{
|
||||
while (!dir->name) {
|
||||
WIN32_FIND_DATA fdat;
|
||||
|
||||
if (!FindNextFile(dir->h, &fdat))
|
||||
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);
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
bool vet_filename(const char *name)
|
||||
{
|
||||
if (strchr(name, '/') || strchr(name, '\\') || strchr(name, ':'))
|
||||
return false;
|
||||
|
||||
if (!name[strspn(name, ".")]) /* entirely composed of dots */
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool create_directory(const char *name)
|
||||
{
|
||||
return CreateDirectory(name, NULL) != 0;
|
||||
}
|
||||
|
||||
char *dir_file_cat(const char *dir, const char *file)
|
||||
{
|
||||
ptrlen dir_pl = ptrlen_from_asciz(dir);
|
||||
return dupcat(
|
||||
dir, (ptrlen_endswith(dir_pl, PTRLEN_LITERAL("\\"), NULL) ||
|
||||
ptrlen_endswith(dir_pl, PTRLEN_LITERAL("/"), NULL)) ? "" : "\\",
|
||||
file);
|
||||
}
|
||||
|
||||
/* ----------------------------------------------------------------------
|
||||
* Platform-specific network handling.
|
||||
*/
|
||||
struct winsftp_cliloop_ctx {
|
||||
HANDLE other_event;
|
||||
int toret;
|
||||
};
|
||||
static bool winsftp_cliloop_pre(void *vctx, const HANDLE **extra_handles,
|
||||
size_t *n_extra_handles)
|
||||
{
|
||||
struct winsftp_cliloop_ctx *ctx = (struct winsftp_cliloop_ctx *)vctx;
|
||||
|
||||
if (ctx->other_event != INVALID_HANDLE_VALUE) {
|
||||
*extra_handles = &ctx->other_event;
|
||||
*n_extra_handles = 1;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
static bool winsftp_cliloop_post(void *vctx, size_t extra_handle_index)
|
||||
{
|
||||
struct winsftp_cliloop_ctx *ctx = (struct winsftp_cliloop_ctx *)vctx;
|
||||
|
||||
if (ctx->other_event != INVALID_HANDLE_VALUE &&
|
||||
extra_handle_index == 0)
|
||||
ctx->toret = 1; /* other_event was set */
|
||||
|
||||
return false; /* always run only one loop iteration */
|
||||
}
|
||||
int do_eventsel_loop(HANDLE other_event)
|
||||
{
|
||||
struct winsftp_cliloop_ctx ctx[1];
|
||||
ctx->other_event = other_event;
|
||||
ctx->toret = 0;
|
||||
cli_main_loop(winsftp_cliloop_pre, winsftp_cliloop_post, ctx);
|
||||
return ctx->toret;
|
||||
}
|
||||
|
||||
/*
|
||||
* 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 (p_WSAEventSelect == NULL) {
|
||||
fd_set readfds;
|
||||
int ret;
|
||||
unsigned long now = GETTICKCOUNT(), then;
|
||||
SOCKET skt = winselcli_unique_socket();
|
||||
|
||||
if (skt == INVALID_SOCKET)
|
||||
return -1; /* doom */
|
||||
|
||||
if (socket_writable(skt))
|
||||
select_result((WPARAM) skt, (LPARAM) FD_WRITE);
|
||||
|
||||
do {
|
||||
unsigned long next;
|
||||
long ticks;
|
||||
struct timeval tv, *ptv;
|
||||
|
||||
if (run_timers(now, &next)) {
|
||||
then = now;
|
||||
now = GETTICKCOUNT();
|
||||
if (now - then > next - then)
|
||||
ticks = 0;
|
||||
else
|
||||
ticks = next - now;
|
||||
tv.tv_sec = ticks / 1000;
|
||||
tv.tv_usec = ticks % 1000 * 1000;
|
||||
ptv = &tv;
|
||||
} else {
|
||||
ptv = NULL;
|
||||
}
|
||||
|
||||
FD_ZERO(&readfds);
|
||||
FD_SET(skt, &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) skt, (LPARAM) FD_READ);
|
||||
|
||||
return 0;
|
||||
} else {
|
||||
return do_eventsel_loop(INVALID_HANDLE_VALUE);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* 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(const char *prompt, bool no_fds_ok)
|
||||
{
|
||||
int ret;
|
||||
struct command_read_ctx ctx[1];
|
||||
DWORD threadid;
|
||||
HANDLE hThread;
|
||||
|
||||
fputs(prompt, stdout);
|
||||
fflush(stdout);
|
||||
|
||||
if ((winselcli_unique_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;
|
||||
|
||||
hThread = CreateThread(NULL, 0, command_read_thread, ctx, 0, &threadid);
|
||||
if (!hThread) {
|
||||
CloseHandle(ctx->event);
|
||||
fprintf(stderr, "Unable to create command input thread\n");
|
||||
cleanup_exit(1);
|
||||
}
|
||||
|
||||
do {
|
||||
ret = do_eventsel_loop(ctx->event);
|
||||
|
||||
/* do_eventsel_loop can't return an error (unlike
|
||||
* ssh_sftp_loop_iteration, which can return -1 if select goes
|
||||
* wrong or if the socket doesn't exist). */
|
||||
assert(ret >= 0);
|
||||
} while (ret == 0);
|
||||
|
||||
CloseHandle(hThread);
|
||||
CloseHandle(ctx->event);
|
||||
|
||||
return ctx->line;
|
||||
}
|
||||
|
||||
void platform_psftp_pre_conn_setup(LogPolicy *lp)
|
||||
{
|
||||
if (restricted_acl()) {
|
||||
lp_eventlog(lp, "Running with restricted process ACL");
|
||||
}
|
||||
}
|
||||
|
||||
/* ----------------------------------------------------------------------
|
||||
* Main program. Parse arguments etc.
|
||||
*/
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
int ret;
|
||||
|
||||
dll_hijacking_protection();
|
||||
|
||||
ret = psftp_main(argc, argv);
|
||||
|
||||
return ret;
|
||||
}
|
||||
Reference in New Issue
Block a user