mirror of
https://github.com/jedisct1/minisign.git
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119 lines
2.4 KiB
C
119 lines
2.4 KiB
C
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__HAIKU__)
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#include <sys/types.h>
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#endif
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#include <assert.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__HAIKU__)
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#include <fcntl.h>
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#include <poll.h>
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#include <termios.h>
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#include <unistd.h>
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#elif defined(_WIN32)
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#include <windows.h>
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#endif
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#include "get_line.h"
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#include "helpers.h"
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#ifndef TCSAFLUSH
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#define TCSAFLUSH 0
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#endif
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#ifndef VERIFY_ONLY
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static void
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disable_echo(void)
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{
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fflush(stdout);
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fflush(stderr);
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__HAIKU__)
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{
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struct termios p;
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if (!isatty(0) || tcgetattr(0, &p) != 0) {
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return;
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}
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p.c_lflag &= ~ECHO;
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tcsetattr(0, TCSAFLUSH, &p);
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}
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#elif defined(_WIN32)
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{
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HANDLE handle = GetStdHandle(STD_INPUT_HANDLE);
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DWORD mode = 0;
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GetConsoleMode(handle, &mode);
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SetConsoleMode(handle, mode & ~ENABLE_ECHO_INPUT);
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}
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#endif
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}
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static void
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enable_echo(void)
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{
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fflush(stdout);
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fflush(stderr);
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__HAIKU__)
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{
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struct termios p;
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if (!isatty(0) || tcgetattr(0, &p) != 0) {
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return;
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}
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p.c_lflag |= ECHO;
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tcsetattr(0, TCSAFLUSH, &p);
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}
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#elif defined(_WIN32)
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{
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HANDLE handle = GetStdHandle(STD_INPUT_HANDLE);
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DWORD mode = 0;
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GetConsoleMode(handle, &mode);
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SetConsoleMode(handle, mode | ENABLE_ECHO_INPUT);
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}
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#endif
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}
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int
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get_line(char *line, size_t max_len, const char *prompt)
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{
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memset(line, 0, max_len);
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if (max_len < 2U || max_len > INT_MAX) {
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return -1;
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}
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xfprintf(stderr, "%s", prompt);
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fflush(stderr);
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if (fgets(line, (int) max_len, stdin) == NULL) {
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return -1;
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}
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trim(line);
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if (strlen(line) >= max_len) {
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fprintf(stderr, "(truncated to %u characters)\n", (unsigned int) max_len);
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} else if (*line == 0) {
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fprintf(stderr, "(empty)\n");
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} else {
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fprintf(stderr, "\n");
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}
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return 0;
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}
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int
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get_password(char *pwd, size_t max_len, const char *prompt)
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{
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int ret;
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disable_echo();
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ret = get_line(pwd, max_len, prompt);
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enable_echo();
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return ret;
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}
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#endif
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