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#include "git-compat-util.h"
#include "compat/terminal.h"
#include "sigchain.h"
#include "strbuf.h"
#ifdef HAVE_DEV_TTY
static int term_fd = -1;
static struct termios old_term;
static void restore_term(void)
{
if (term_fd < 0)
return;
tcsetattr(term_fd, TCSAFLUSH, &old_term);
close(term_fd);
term_fd = -1;
}
static void restore_term_on_signal(int sig)
{
restore_term();
sigchain_pop(sig);
raise(sig);
}
static int disable_echo(void)
{
struct termios t;
term_fd = open("/dev/tty", O_RDWR);
if (tcgetattr(term_fd, &t) < 0)
goto error;
old_term = t;
sigchain_push_common(restore_term_on_signal);
t.c_lflag &= ~ECHO;
if (!tcsetattr(term_fd, TCSAFLUSH, &t))
return 0;
error:
close(term_fd);
term_fd = -1;
return -1;
}
char *git_terminal_prompt(const char *prompt, int echo)
{
static struct strbuf buf = STRBUF_INIT;
int r;
FILE *input_fh, *output_fh;
input_fh = fopen("/dev/tty", "r");
if (!input_fh)
return NULL;
output_fh = fopen("/dev/tty", "w");
if (!output_fh) {
fclose(input_fh);
return NULL;
}
if (!echo && disable_echo()) {
fclose(input_fh);
fclose(output_fh);
return NULL;
}
fputs(prompt, output_fh);
fflush(output_fh);
r = strbuf_getline(&buf, input_fh, '\n');
if (!echo) {
putc('\n', output_fh);
fflush(output_fh);
}
restore_term();
fclose(input_fh);
fclose(output_fh);
if (r == EOF)
return NULL;
return buf.buf;
}
#else
char *git_terminal_prompt(const char *prompt, int echo)
{
return getpass(prompt);
}
#endif
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