Applications now could call iscygtty(STDIN_FILENO) in order to detect whether they are running from Cygwin/MSys terminal.
Without that, they have no choice but to think that stdin is redirected from a named pipe. Signed-off-by: Mihail Konev <k....@ya.ru> Moved-from: https://github.com/Alexpux/mingw-w64/pull/3 --- v5: - stricter check (follows cygwin tty.cc) - drop \\?\, as the name shouldn't be long mingw-w64-headers/include/iscygtty.c | 104 +++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 mingw-w64-headers/include/iscygtty.c diff --git a/mingw-w64-headers/include/iscygtty.c b/mingw-w64-headers/include/iscygtty.c new file mode 100644 index 000000000000..1fbd8a6cba3d --- /dev/null +++ b/mingw-w64-headers/include/iscygtty.c @@ -0,0 +1,104 @@ +#ifndef __ISCYGTTY_C__ +#define __ISCYGTTY_C__ + +#include <io.h> +#include <winternl.h> + +static int iscygtty(int fd) { + intptr_t h_fd = _get_osfhandle(fd); + + char ntfn_bytes[sizeof(OBJECT_NAME_INFORMATION) + 256 * sizeof(WCHAR)]; + OBJECT_NAME_INFORMATION *ntfn = (OBJECT_NAME_INFORMATION*) ntfn_bytes; + NTSTATUS status; + ULONG ntfn_size = sizeof(ntfn_bytes); + + USHORT i, l; + wchar_t c, *s0; + + memset(ntfn, 0, ntfn_size); + status = NtQueryObject((HANDLE)h_fd, ObjectNameInformation, + ntfn, ntfn_size, &ntfn_size); + + if (!NT_SUCCESS(status)) + return 0; + + l = ntfn->Name.Length; + s0 = ntfn->Name.Buffer; + + /* Check for "\Device\NamedPipe" */ + { + wchar_t expect[] = L"\\Device\\NamedPipe\\"; + + for (i = 0; i < l; i++) { + wchar_t e = expect[i]; + c = s0[i]; + if (!e) + break; + if (c != e) { + return 0; + } + } + + l -= i; + s0 += i; + } + + /* Look for "[a-z0-9]+-[a-z0-9]+-pty[0-9]+-from-master" */ + { + int part = 0; + + for (i = 0; i < l; i++) { + c = s0[i]; + + if (!c) + break; + + if (c == L'-') { + part++; + + /* handle -pty%d- */ + if (part == 2) { + wchar_t *s = s0 + i + 1; + + if (s[0] == L'p' && s[1] == L't' && s[2] == L'y' && + (c = s[3]) && (c >= L'0') && (c <= L'9')) + { + s += 4; + while ((c = *s) && (c >= L'0') && (c <= L'9')) + s++; + if (c != L'-') { + return 0; + } + part++; + + { + wchar_t expect[] = L"-from-master"; + int j; + + j = 0; + while (1) { + wchar_t e = expect[j]; + c = s[j]; + if (!e) { + return 1; + } + if (c != e) { + return 0; + } + j++; + } + } + } else { + return 0; + } + } + } else if (!(c >= L'a' && c <= L'z') && !(c >= L'0' && c <= L'9')) { + return 0; + } + } + } + + return 0; +} + +#endif /* __ISCYGTTY_C__ */ -- 2.9.2 ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
