2 * winsftp.c: the Windows-specific parts of PSFTP and PSCP.
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12 char *get_ttymode(void *frontend, const char *mode) { return NULL; }
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14 int get_userpass_input(prompts_t *p, unsigned char *in, int inlen)
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17 ret = cmdline_get_passwd_input(p, in, inlen);
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19 ret = console_get_userpass_input(p, in, inlen);
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23 void platform_get_x11_auth(struct X11Display *display, const Config *cfg)
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25 /* Do nothing, therefore no auth. */
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27 const int platform_uses_x11_unix_by_default = TRUE;
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29 /* ----------------------------------------------------------------------
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30 * File access abstraction.
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34 * Set local current directory. Returns NULL on success, or else an
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35 * error message which must be freed after printing.
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37 char *psftp_lcd(char *dir)
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41 if (!SetCurrentDirectory(dir)) {
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44 FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
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45 FORMAT_MESSAGE_FROM_SYSTEM |
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46 FORMAT_MESSAGE_IGNORE_INSERTS,
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47 NULL, GetLastError(),
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48 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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49 (LPTSTR)&message, 0, NULL);
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50 i = strcspn((char *)message, "\n");
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51 ret = dupprintf("%.*s", i, (LPCTSTR)message);
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59 * Get local current directory. Returns a string which must be
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62 char *psftp_getcwd(void)
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64 char *ret = snewn(256, char);
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65 int len = GetCurrentDirectory(256, ret);
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67 ret = sresize(ret, len, char);
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68 GetCurrentDirectory(len, ret);
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72 #define TIME_POSIX_TO_WIN(t, ft) do { \
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73 ULARGE_INTEGER uli; \
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74 uli.QuadPart = ((ULONGLONG)(t) + 11644473600ull) * 10000000ull; \
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75 (ft).dwLowDateTime = uli.LowPart; \
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76 (ft).dwHighDateTime = uli.HighPart; \
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78 #define TIME_WIN_TO_POSIX(ft, t) do { \
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79 ULARGE_INTEGER uli; \
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80 uli.LowPart = (ft).dwLowDateTime; \
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81 uli.HighPart = (ft).dwHighDateTime; \
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82 uli.QuadPart = uli.QuadPart / 10000000ull - 11644473600ull; \
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83 (t) = (unsigned long) uli.QuadPart; \
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90 RFile *open_existing_file(char *name, uint64 *size,
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91 unsigned long *mtime, unsigned long *atime)
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96 h = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL,
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97 OPEN_EXISTING, 0, 0);
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98 if (h == INVALID_HANDLE_VALUE)
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105 size->lo=GetFileSize(h, &(size->hi));
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107 if (mtime || atime) {
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108 FILETIME actime, wrtime;
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109 GetFileTime(h, NULL, &actime, &wrtime);
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111 TIME_WIN_TO_POSIX(actime, *atime);
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113 TIME_WIN_TO_POSIX(wrtime, *mtime);
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119 int read_from_file(RFile *f, void *buffer, int length)
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123 ret = ReadFile(f->h, buffer, length, &read, NULL);
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125 return -1; /* error */
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130 void close_rfile(RFile *f)
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140 WFile *open_new_file(char *name)
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145 h = CreateFile(name, GENERIC_WRITE, 0, NULL,
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146 CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
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147 if (h == INVALID_HANDLE_VALUE)
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156 WFile *open_existing_wfile(char *name, uint64 *size)
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161 h = CreateFile(name, GENERIC_WRITE, FILE_SHARE_READ, NULL,
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162 OPEN_EXISTING, 0, 0);
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163 if (h == INVALID_HANDLE_VALUE)
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170 size->lo=GetFileSize(h, &(size->hi));
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175 int write_to_file(WFile *f, void *buffer, int length)
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179 ret = WriteFile(f->h, buffer, length, &written, NULL);
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181 return -1; /* error */
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186 void set_file_times(WFile *f, unsigned long mtime, unsigned long atime)
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188 FILETIME actime, wrtime;
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189 TIME_POSIX_TO_WIN(atime, actime);
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190 TIME_POSIX_TO_WIN(mtime, wrtime);
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191 SetFileTime(f->h, NULL, &actime, &wrtime);
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194 void close_wfile(WFile *f)
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200 /* Seek offset bytes through file, from whence, where whence is
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201 FROM_START, FROM_CURRENT, or FROM_END */
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202 int seek_file(WFile *f, uint64 offset, int whence)
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208 movemethod = FILE_BEGIN;
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211 movemethod = FILE_CURRENT;
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214 movemethod = FILE_END;
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220 SetFilePointer(f->h, offset.lo, &(offset.hi), movemethod);
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222 if (GetLastError() != NO_ERROR)
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228 uint64 get_file_posn(WFile *f)
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233 ret.lo = SetFilePointer(f->h, 0L, &(ret.hi), FILE_CURRENT);
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238 int file_type(char *name)
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241 attr = GetFileAttributes(name);
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242 /* We know of no `weird' files under Windows. */
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243 if (attr == (DWORD)-1)
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244 return FILE_TYPE_NONEXISTENT;
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245 else if (attr & FILE_ATTRIBUTE_DIRECTORY)
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246 return FILE_TYPE_DIRECTORY;
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248 return FILE_TYPE_FILE;
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256 DirHandle *open_directory(char *name)
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259 WIN32_FIND_DATA fdat;
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263 /* Enumerate files in dir `foo'. */
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264 findfile = dupcat(name, "/*", NULL);
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265 h = FindFirstFile(findfile, &fdat);
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266 if (h == INVALID_HANDLE_VALUE)
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270 ret = snew(DirHandle);
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272 ret->name = dupstr(fdat.cFileName);
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276 char *read_filename(DirHandle *dir)
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281 WIN32_FIND_DATA fdat;
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282 int ok = FindNextFile(dir->h, &fdat);
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286 dir->name = dupstr(fdat.cFileName);
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290 if (dir->name[0] == '.' &&
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291 (dir->name[1] == '\0' ||
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292 (dir->name[1] == '.' && dir->name[2] == '\0'))) {
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297 } while (!dir->name);
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300 char *ret = dir->name;
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307 void close_directory(DirHandle *dir)
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315 int test_wildcard(char *name, int cmdline)
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318 WIN32_FIND_DATA fdat;
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320 /* First see if the exact name exists. */
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321 if (GetFileAttributes(name) != (DWORD)-1)
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322 return WCTYPE_FILENAME;
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324 /* Otherwise see if a wildcard match finds anything. */
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325 fh = FindFirstFile(name, &fdat);
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326 if (fh == INVALID_HANDLE_VALUE)
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327 return WCTYPE_NONEXISTENT;
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330 return WCTYPE_WILDCARD;
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333 struct WildcardMatcher {
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340 * Return a pointer to the portion of str that comes after the last
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341 * slash (or backslash or colon, if `local' is TRUE).
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343 static char *stripslashes(char *str, int local)
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348 p = strchr(str, ':');
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352 p = strrchr(str, '/');
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356 p = strrchr(str, '\\');
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363 WildcardMatcher *begin_wildcard_matching(char *name)
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366 WIN32_FIND_DATA fdat;
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367 WildcardMatcher *ret;
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370 h = FindFirstFile(name, &fdat);
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371 if (h == INVALID_HANDLE_VALUE)
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374 ret = snew(WildcardMatcher);
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376 ret->srcpath = dupstr(name);
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377 last = stripslashes(ret->srcpath, 1);
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379 if (fdat.cFileName[0] == '.' &&
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380 (fdat.cFileName[1] == '\0' ||
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381 (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
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384 ret->name = dupcat(ret->srcpath, fdat.cFileName, NULL);
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389 char *wildcard_get_filename(WildcardMatcher *dir)
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391 while (!dir->name) {
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392 WIN32_FIND_DATA fdat;
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393 int ok = FindNextFile(dir->h, &fdat);
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398 if (fdat.cFileName[0] == '.' &&
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399 (fdat.cFileName[1] == '\0' ||
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400 (fdat.cFileName[1] == '.' && fdat.cFileName[2] == '\0')))
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403 dir->name = dupcat(dir->srcpath, fdat.cFileName, NULL);
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407 char *ret = dir->name;
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414 void finish_wildcard_matching(WildcardMatcher *dir)
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419 sfree(dir->srcpath);
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423 int vet_filename(char *name)
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425 if (strchr(name, '/') || strchr(name, '\\') || strchr(name, ':'))
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428 if (!name[strspn(name, ".")]) /* entirely composed of dots */
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434 int create_directory(char *name)
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436 return CreateDirectory(name, NULL) != 0;
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439 char *dir_file_cat(char *dir, char *file)
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441 return dupcat(dir, "\\", file, NULL);
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444 /* ----------------------------------------------------------------------
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445 * Platform-specific network handling.
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449 * Be told what socket we're supposed to be using.
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451 static SOCKET sftp_ssh_socket = INVALID_SOCKET;
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452 static HANDLE netevent = INVALID_HANDLE_VALUE;
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453 char *do_select(SOCKET skt, int startup)
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457 sftp_ssh_socket = skt;
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459 sftp_ssh_socket = INVALID_SOCKET;
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461 if (p_WSAEventSelect) {
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463 events = (FD_CONNECT | FD_READ | FD_WRITE |
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464 FD_OOB | FD_CLOSE | FD_ACCEPT);
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465 netevent = CreateEvent(NULL, FALSE, FALSE, NULL);
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469 if (p_WSAEventSelect(skt, netevent, events) == SOCKET_ERROR) {
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470 switch (p_WSAGetLastError()) {
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472 return "Network is down";
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474 return "WSAEventSelect(): unknown error";
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480 extern int select_result(WPARAM, LPARAM);
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482 int do_eventsel_loop(HANDLE other_event)
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484 int n, nhandles, nallhandles, netindex, otherindex;
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489 long now = GETTICKCOUNT();
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491 if (run_timers(now, &next)) {
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492 ticks = next - GETTICKCOUNT();
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493 if (ticks < 0) ticks = 0; /* just in case */
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498 handles = handle_get_events(&nhandles);
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499 handles = sresize(handles, nhandles+2, HANDLE);
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500 nallhandles = nhandles;
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502 if (netevent != INVALID_HANDLE_VALUE)
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503 handles[netindex = nallhandles++] = netevent;
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506 if (other_event != INVALID_HANDLE_VALUE)
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507 handles[otherindex = nallhandles++] = other_event;
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511 n = WaitForMultipleObjects(nallhandles, handles, FALSE, ticks);
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513 if ((unsigned)(n - WAIT_OBJECT_0) < (unsigned)nhandles) {
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514 handle_got_event(handles[n - WAIT_OBJECT_0]);
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515 } else if (netindex >= 0 && n == WAIT_OBJECT_0 + netindex) {
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516 WSANETWORKEVENTS things;
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518 extern SOCKET first_socket(int *), next_socket(int *);
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519 extern int select_result(WPARAM, LPARAM);
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520 int i, socketstate;
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523 * We must not call select_result() for any socket
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524 * until we have finished enumerating within the
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525 * tree. This is because select_result() may close
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526 * the socket and modify the tree.
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528 /* Count the active sockets. */
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530 for (socket = first_socket(&socketstate);
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531 socket != INVALID_SOCKET;
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532 socket = next_socket(&socketstate)) i++;
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534 /* Expand the buffer if necessary. */
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535 sklist = snewn(i, SOCKET);
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537 /* Retrieve the sockets into sklist. */
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539 for (socket = first_socket(&socketstate);
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540 socket != INVALID_SOCKET;
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541 socket = next_socket(&socketstate)) {
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542 sklist[skcount++] = socket;
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545 /* Now we're done enumerating; go through the list. */
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546 for (i = 0; i < skcount; i++) {
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548 socket = sklist[i];
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549 wp = (WPARAM) socket;
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550 if (!p_WSAEnumNetworkEvents(socket, NULL, &things)) {
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551 static const struct { int bit, mask; } eventtypes[] = {
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552 {FD_CONNECT_BIT, FD_CONNECT},
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553 {FD_READ_BIT, FD_READ},
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554 {FD_CLOSE_BIT, FD_CLOSE},
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555 {FD_OOB_BIT, FD_OOB},
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556 {FD_WRITE_BIT, FD_WRITE},
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557 {FD_ACCEPT_BIT, FD_ACCEPT},
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561 noise_ultralight(socket);
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562 noise_ultralight(things.lNetworkEvents);
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564 for (e = 0; e < lenof(eventtypes); e++)
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565 if (things.lNetworkEvents & eventtypes[e].mask) {
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567 int err = things.iErrorCode[eventtypes[e].bit];
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568 lp = WSAMAKESELECTREPLY(eventtypes[e].mask, err);
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569 select_result(wp, lp);
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579 if (n == WAIT_TIMEOUT) {
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582 now = GETTICKCOUNT();
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585 if (otherindex >= 0 && n == WAIT_OBJECT_0 + otherindex)
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592 * Wait for some network data and process it.
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594 * We have two variants of this function. One uses select() so that
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595 * it's compatible with WinSock 1. The other uses WSAEventSelect
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596 * and MsgWaitForMultipleObjects, so that we can consistently use
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597 * WSAEventSelect throughout; this enables us to also implement
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598 * ssh_sftp_get_cmdline() using a parallel mechanism.
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600 int ssh_sftp_loop_iteration(void)
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602 if (p_WSAEventSelect == NULL) {
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605 long now = GETTICKCOUNT();
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607 if (sftp_ssh_socket == INVALID_SOCKET)
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608 return -1; /* doom */
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610 if (socket_writable(sftp_ssh_socket))
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611 select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_WRITE);
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615 struct timeval tv, *ptv;
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617 if (run_timers(now, &next)) {
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618 ticks = next - GETTICKCOUNT();
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620 ticks = 1; /* just in case */
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621 tv.tv_sec = ticks / 1000;
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622 tv.tv_usec = ticks % 1000 * 1000;
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629 FD_SET(sftp_ssh_socket, &readfds);
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630 ret = p_select(1, &readfds, NULL, NULL, ptv);
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633 return -1; /* doom */
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637 now = GETTICKCOUNT();
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639 } while (ret == 0);
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641 select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ);
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645 return do_eventsel_loop(INVALID_HANDLE_VALUE);
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650 * Read a command line from standard input.
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652 * In the presence of WinSock 2, we can use WSAEventSelect to
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653 * mediate between the socket and stdin, meaning we can send
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654 * keepalives and respond to server events even while waiting at
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655 * the PSFTP command prompt. Without WS2, we fall back to a simple
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658 struct command_read_ctx {
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663 static DWORD WINAPI command_read_thread(void *param)
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665 struct command_read_ctx *ctx = (struct command_read_ctx *) param;
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667 ctx->line = fgetline(stdin);
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669 SetEvent(ctx->event);
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674 char *ssh_sftp_get_cmdline(char *prompt, int no_fds_ok)
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677 struct command_read_ctx actx, *ctx = &actx;
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680 fputs(prompt, stdout);
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683 if ((sftp_ssh_socket == INVALID_SOCKET && no_fds_ok) ||
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684 p_WSAEventSelect == NULL) {
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685 return fgetline(stdin); /* very simple */
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689 * Create a second thread to read from stdin. Process network
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690 * and timing events until it terminates.
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692 ctx->event = CreateEvent(NULL, FALSE, FALSE, NULL);
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695 if (!CreateThread(NULL, 0, command_read_thread,
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696 ctx, 0, &threadid)) {
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697 fprintf(stderr, "Unable to create command input thread\n");
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702 ret = do_eventsel_loop(ctx->event);
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704 /* Error return can only occur if netevent==NULL, and it ain't. */
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706 } while (ret == 0);
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711 /* ----------------------------------------------------------------------
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712 * Main program. Parse arguments etc.
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714 int main(int argc, char *argv[])
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718 ret = psftp_main(argc, argv);
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