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https://github.com/git/git.git
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380395d094
Throughout git, it is assumed that the WIN32 preprocessor symbol is defined on native Windows setups (mingw and msvc) and not on Cygwin. On Cygwin, most of the time git can pretend this is just another Unix machine, and Windows-specific magic is generally counterproductive. Unfortunately Cygwin *does* define the WIN32 symbol in some headers. Best to rely on a new git-specific symbol GIT_WINDOWS_NATIVE instead, defined as follows: #if defined(WIN32) && !defined(__CYGWIN__) # define GIT_WINDOWS_NATIVE #endif After this change, it should be possible to drop the CYGWIN_V15_WIN32API setting without any negative effect. [rj: %s/WINDOWS_NATIVE/GIT_WINDOWS_NATIVE/g ] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
147 lines
2.5 KiB
C
147 lines
2.5 KiB
C
#include "git-compat-util.h"
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#include "compat/terminal.h"
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#include "sigchain.h"
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#include "strbuf.h"
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#if defined(HAVE_DEV_TTY) || defined(GIT_WINDOWS_NATIVE)
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static void restore_term(void);
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static void restore_term_on_signal(int sig)
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{
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restore_term();
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sigchain_pop(sig);
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raise(sig);
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}
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#ifdef HAVE_DEV_TTY
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#define INPUT_PATH "/dev/tty"
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#define OUTPUT_PATH "/dev/tty"
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static int term_fd = -1;
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static struct termios old_term;
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static void restore_term(void)
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{
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if (term_fd < 0)
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return;
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tcsetattr(term_fd, TCSAFLUSH, &old_term);
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close(term_fd);
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term_fd = -1;
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}
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static int disable_echo(void)
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{
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struct termios t;
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term_fd = open("/dev/tty", O_RDWR);
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if (tcgetattr(term_fd, &t) < 0)
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goto error;
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old_term = t;
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sigchain_push_common(restore_term_on_signal);
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t.c_lflag &= ~ECHO;
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if (!tcsetattr(term_fd, TCSAFLUSH, &t))
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return 0;
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error:
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close(term_fd);
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term_fd = -1;
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return -1;
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}
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#elif defined(GIT_WINDOWS_NATIVE)
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#define INPUT_PATH "CONIN$"
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#define OUTPUT_PATH "CONOUT$"
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#define FORCE_TEXT "t"
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static HANDLE hconin = INVALID_HANDLE_VALUE;
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static DWORD cmode;
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static void restore_term(void)
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{
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if (hconin == INVALID_HANDLE_VALUE)
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return;
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SetConsoleMode(hconin, cmode);
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CloseHandle(hconin);
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hconin = INVALID_HANDLE_VALUE;
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}
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static int disable_echo(void)
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{
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hconin = CreateFile("CONIN$", GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ, NULL, OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL, NULL);
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if (hconin == INVALID_HANDLE_VALUE)
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return -1;
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GetConsoleMode(hconin, &cmode);
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sigchain_push_common(restore_term_on_signal);
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if (!SetConsoleMode(hconin, cmode & (~ENABLE_ECHO_INPUT))) {
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CloseHandle(hconin);
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hconin = INVALID_HANDLE_VALUE;
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return -1;
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}
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return 0;
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}
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#endif
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#ifndef FORCE_TEXT
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#define FORCE_TEXT
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#endif
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char *git_terminal_prompt(const char *prompt, int echo)
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{
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static struct strbuf buf = STRBUF_INIT;
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int r;
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FILE *input_fh, *output_fh;
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input_fh = fopen(INPUT_PATH, "r" FORCE_TEXT);
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if (!input_fh)
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return NULL;
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output_fh = fopen(OUTPUT_PATH, "w" FORCE_TEXT);
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if (!output_fh) {
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fclose(input_fh);
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return NULL;
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}
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if (!echo && disable_echo()) {
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fclose(input_fh);
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fclose(output_fh);
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return NULL;
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}
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fputs(prompt, output_fh);
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fflush(output_fh);
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r = strbuf_getline(&buf, input_fh, '\n');
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if (!echo) {
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putc('\n', output_fh);
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fflush(output_fh);
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}
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restore_term();
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fclose(input_fh);
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fclose(output_fh);
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if (r == EOF)
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return NULL;
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return buf.buf;
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}
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#else
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char *git_terminal_prompt(const char *prompt, int echo)
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{
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return getpass(prompt);
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}
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#endif
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