mirror of
https://github.com/nextcloud/desktop.git
synced 2024-10-24 13:25:52 +03:00
137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
/*
|
|
* libcsync -- a library to sync a directory with another
|
|
*
|
|
* Copyright (c) 2008 by Andreas Schneider <mail@cynapses.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
#include "csync_auth.h"
|
|
|
|
/** Zero a structure */
|
|
#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
|
|
|
|
int csync_auth(const char *prompt, char *buf, size_t len, int echo, int verify,
|
|
void *userdata) {
|
|
struct termios attr;
|
|
struct termios old_attr;
|
|
int ok = 0;
|
|
int fd = -1;
|
|
char *ptr = NULL;
|
|
char tmp[len];
|
|
|
|
/* unused variables */
|
|
(void) userdata;
|
|
|
|
ZERO_STRUCT(attr);
|
|
ZERO_STRUCT(old_attr);
|
|
ZERO_STRUCT(tmp);
|
|
|
|
/* get local terminal attributes */
|
|
if (tcgetattr(STDIN_FILENO, &attr) < 0) {
|
|
perror("tcgetattr");
|
|
return -1;
|
|
}
|
|
|
|
/* save terminal attributes */
|
|
memcpy(&old_attr, &attr, sizeof(attr));
|
|
if((fd = fcntl(0, F_GETFL, 0)) < 0) {
|
|
perror("fcntl");
|
|
return -1;
|
|
}
|
|
|
|
/* disable echo */
|
|
if (!echo) {
|
|
attr.c_lflag &= ~(ECHO);
|
|
}
|
|
|
|
/* write attributes to terminal */
|
|
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &attr) < 0) {
|
|
perror("tcsetattr");
|
|
return -1;
|
|
}
|
|
|
|
/* disable nonblocking I/O */
|
|
if (fd & O_NDELAY) {
|
|
fcntl(0, F_SETFL, fd & ~O_NDELAY);
|
|
}
|
|
|
|
/* read the password */
|
|
while (!ok) {
|
|
if (*buf) {
|
|
fprintf(stdout, "%s [%s] ", prompt, buf);
|
|
} else {
|
|
fprintf(stdout, "%s ", prompt);
|
|
}
|
|
fflush(stdout);
|
|
while (! fgets(tmp, len, stdin));
|
|
|
|
if ((ptr = strchr(tmp, '\n'))) {
|
|
*ptr = '\0';
|
|
}
|
|
fprintf(stdout, "\n");
|
|
|
|
if (*tmp) {
|
|
strncpy(buf, tmp, len);
|
|
}
|
|
|
|
|
|
if (verify) {
|
|
char key_string[len];
|
|
|
|
fprintf(stdout, "\nVerifying, please re-enter. %s", prompt);
|
|
fflush(stdout);
|
|
if (! fgets(key_string, sizeof(key_string), stdin)) {
|
|
clearerr(stdin);
|
|
continue;
|
|
}
|
|
if ((ptr = strchr(key_string, '\n'))) {
|
|
*ptr = '\0';
|
|
}
|
|
fprintf(stdout, "\n");
|
|
if (strcmp(buf, key_string)) {
|
|
printf("\n\07\07Mismatch - try again\n");
|
|
fflush(stdout);
|
|
continue;
|
|
}
|
|
}
|
|
ok = 1;
|
|
}
|
|
|
|
/* reset terminal */
|
|
if (tcsetattr(STDIN_FILENO, TCSANOW, &old_attr)) {
|
|
ok = 0;
|
|
}
|
|
|
|
/* close fd */
|
|
if (fd & O_NDELAY) {
|
|
fcntl(0, F_SETFL, fd);
|
|
}
|
|
|
|
/* force termination */
|
|
buf[len - 1] = '\0';
|
|
ZERO_STRUCT(tmp);
|
|
|
|
/* return nonzero if not okay */
|
|
return !ok;
|
|
}
|
|
|
|
/* vim: set ts=8 sw=2 et cindent: */
|