/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ #include "tool_setup.h" #ifndef HAVE_GETPASS_R /* this file is only for systems without getpass_r() */ #ifdef HAVE_FCNTL_H # include <fcntl.h> #endif #ifdef HAVE_TERMIOS_H # include <termios.h> #elif defined(HAVE_TERMIO_H) # include <termio.h> #endif #ifdef __VMS # include descrip # include starlet # include iodef #endif #ifdef WIN32 # include <conio.h> #endif #ifdef NETWARE # ifdef __NOVELL_LIBC__ # include <screen.h> # else # include <nwconio.h> # endif #endif #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #include "tool_getpass.h" #include "memdebug.h" /* keep this as LAST include */ #ifdef __VMS /* VMS implementation */ char *getpass_r(const char *prompt, char *buffer, size_t buflen) { long sts; short chan; /* MSK, 23-JAN-2004, iosbdef.h wasn't in VAX V7.2 or CC 6.4 */ /* distribution so I created this. May revert back later to */ /* struct _iosb iosb; */ struct _iosb { short int iosb$w_status; /* status */ short int iosb$w_bcnt; /* byte count */ int unused; /* unused */ } iosb; $DESCRIPTOR(ttdesc, "TT"); buffer[0] = '\0'; sts = sys$assign(&ttdesc, &chan, 0, 0); if(sts & 1) { sts = sys$qiow(0, chan, IO$_READPROMPT | IO$M_NOECHO, &iosb, 0, 0, buffer, buflen, 0, 0, prompt, strlen(prompt)); if((sts & 1) && (iosb.iosb$w_status & 1)) buffer[iosb.iosb$w_bcnt] = '\0'; sts = sys$dassgn(chan); } return buffer; /* we always return success */ } #define DONE #endif /* __VMS */ #ifdef __SYMBIAN32__ # define getch() getchar() #endif #if defined(WIN32) || defined(__SYMBIAN32__) char *getpass_r(const char *prompt, char *buffer, size_t buflen) { size_t i; fputs(prompt, stderr); for(i = 0; i < buflen; i++) { buffer[i] = (char)getch(); if(buffer[i] == '\r' || buffer[i] == '\n') { buffer[i] = '\0'; break; } else if(buffer[i] == '\b') /* remove this letter and if this is not the first key, remove the previous one as well */ i = i - (i >= 1 ? 2 : 1); } #ifndef __SYMBIAN32__ /* since echo is disabled, print a newline */ fputs("\n", stderr); #endif /* if user didn't hit ENTER, terminate buffer */ if(i == buflen) buffer[buflen-1] = '\0'; return buffer; /* we always return success */ } #define DONE #endif /* WIN32 || __SYMBIAN32__ */ #ifdef NETWARE /* NetWare implementation */ #ifdef __NOVELL_LIBC__ char *getpass_r(const char *prompt, char *buffer, size_t buflen) { return getpassword(prompt, buffer, buflen); } #else char *getpass_r(const char *prompt, char *buffer, size_t buflen) { size_t i = 0; printf("%s", prompt); do { buffer[i++] = getch(); if(buffer[i-1] == '\b') { /* remove this letter and if this is not the first key, remove the previous one as well */ if(i > 1) { printf("\b \b"); i = i - 2; } else { RingTheBell(); i = i - 1; } } else if(buffer[i-1] != 13) putchar('*'); } while((buffer[i-1] != 13) && (i < buflen)); buffer[i-1] = '\0'; printf("\r\n"); return buffer; } #endif /* __NOVELL_LIBC__ */ #define DONE #endif /* NETWARE */ #ifndef DONE /* not previously provided */ #ifdef HAVE_TERMIOS_H # define struct_term struct termios #elif defined(HAVE_TERMIO_H) # define struct_term struct termio #else # undef struct_term #endif static bool ttyecho(bool enable, int fd) { #ifdef struct_term static struct_term withecho; static struct_term noecho; #endif if(!enable) { /* disable echo by extracting the current 'withecho' mode and remove the ECHO bit and set back the struct */ #ifdef HAVE_TERMIOS_H tcgetattr(fd, &withecho); noecho = withecho; noecho.c_lflag &= ~ECHO; tcsetattr(fd, TCSANOW, &noecho); #elif defined(HAVE_TERMIO_H) ioctl(fd, TCGETA, &withecho); noecho = withecho; noecho.c_lflag &= ~ECHO; ioctl(fd, TCSETA, &noecho); #else /* neither HAVE_TERMIO_H nor HAVE_TERMIOS_H, we can't disable echo! */ (void)fd; return FALSE; /* not disabled */ #endif return TRUE; /* disabled */ } else { /* re-enable echo, assumes we disabled it before (and set the structs we now use to reset the terminal status) */ #ifdef HAVE_TERMIOS_H tcsetattr(fd, TCSAFLUSH, &withecho); #elif defined(HAVE_TERMIO_H) ioctl(fd, TCSETA, &withecho); #else return FALSE; /* not enabled */ #endif return TRUE; /* enabled */ } } char *getpass_r(const char *prompt, /* prompt to display */ char *password, /* buffer to store password in */ size_t buflen) /* size of buffer to store password in */ { ssize_t nread; bool disabled; int fd = open("/dev/tty", O_RDONLY); if(-1 == fd) fd = STDIN_FILENO; /* use stdin if the tty couldn't be used */ disabled = ttyecho(FALSE, fd); /* disable terminal echo */ fputs(prompt, stderr); nread = read(fd, password, buflen); if(nread > 0) password[--nread] = '\0'; /* zero terminate where enter is stored */ else password[0] = '\0'; /* got nothing */ if(disabled) { /* if echo actually was disabled, add a newline */ fputs("\n", stderr); (void)ttyecho(TRUE, fd); /* enable echo */ } if(STDIN_FILENO != fd) close(fd); return password; /* return pointer to buffer */ } #endif /* DONE */ #endif /* HAVE_GETPASS_R */