1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel (at) haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at https://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22 #include "tool_setup.h" 23 24 #if defined(__AMIGA__) && !defined(__amigaos4__) 25 # undef HAVE_TERMIOS_H 26 #endif 27 28 #ifndef HAVE_GETPASS_R 29 /* this file is only for systems without getpass_r() */ 30 31 #ifdef HAVE_FCNTL_H 32 # include <fcntl.h> 33 #endif 34 35 #ifdef HAVE_TERMIOS_H 36 # include <termios.h> 37 #elif defined(HAVE_TERMIO_H) 38 # include <termio.h> 39 #endif 40 41 #ifdef __VMS 42 # include descrip 43 # include starlet 44 # include iodef 45 #endif 46 47 #ifdef WIN32 48 # include <conio.h> 49 #endif 50 51 #ifdef NETWARE 52 # ifdef __NOVELL_LIBC__ 53 # include <screen.h> 54 # else 55 # include <nwconio.h> 56 # endif 57 #endif 58 59 #ifdef HAVE_UNISTD_H 60 #include <unistd.h> 61 #endif 62 #include "tool_getpass.h" 63 64 #include "memdebug.h" /* keep this as LAST include */ 65 66 #ifdef __VMS 67 /* VMS implementation */ 68 char *getpass_r(const char *prompt, char *buffer, size_t buflen) 69 { 70 long sts; 71 short chan; 72 73 /* MSK, 23-JAN-2004, iosbdef.h wasn't in VAX V7.2 or CC 6.4 */ 74 /* distribution so I created this. May revert back later to */ 75 /* struct _iosb iosb; */ 76 struct _iosb 77 { 78 short int iosb$w_status; /* status */ 79 short int iosb$w_bcnt; /* byte count */ 80 int unused; /* unused */ 81 } iosb; 82 83 $DESCRIPTOR(ttdesc, "TT"); 84 85 buffer[0] = '\0'; 86 sts = sys$assign(&ttdesc, &chan, 0, 0); 87 if(sts & 1) { 88 sts = sys$qiow(0, chan, 89 IO$_READPROMPT | IO$M_NOECHO, 90 &iosb, 0, 0, buffer, buflen, 0, 0, 91 prompt, strlen(prompt)); 92 93 if((sts & 1) && (iosb.iosb$w_status & 1)) 94 buffer[iosb.iosb$w_bcnt] = '\0'; 95 96 sts = sys$dassgn(chan); 97 } 98 return buffer; /* we always return success */ 99 } 100 #define DONE 101 #endif /* __VMS */ 102 103 #ifdef __SYMBIAN32__ 104 # define getch() getchar() 105 #endif 106 107 #if defined(WIN32) || defined(__SYMBIAN32__) 108 109 char *getpass_r(const char *prompt, char *buffer, size_t buflen) 110 { 111 size_t i; 112 fputs(prompt, stderr); 113 114 for(i = 0; i < buflen; i++) { 115 buffer[i] = (char)getch(); 116 if(buffer[i] == '\r' || buffer[i] == '\n') { 117 buffer[i] = '\0'; 118 break; 119 } 120 else 121 if(buffer[i] == '\b') 122 /* remove this letter and if this is not the first key, remove the 123 previous one as well */ 124 i = i - (i >= 1 ? 2 : 1); 125 } 126 #ifndef __SYMBIAN32__ 127 /* since echo is disabled, print a newline */ 128 fputs("\n", stderr); 129 #endif 130 /* if user didn't hit ENTER, terminate buffer */ 131 if(i == buflen) 132 buffer[buflen-1] = '\0'; 133 134 return buffer; /* we always return success */ 135 } 136 #define DONE 137 #endif /* WIN32 || __SYMBIAN32__ */ 138 139 #ifdef NETWARE 140 /* NetWare implementation */ 141 #ifdef __NOVELL_LIBC__ 142 char *getpass_r(const char *prompt, char *buffer, size_t buflen) 143 { 144 return getpassword(prompt, buffer, buflen); 145 } 146 #else 147 char *getpass_r(const char *prompt, char *buffer, size_t buflen) 148 { 149 size_t i = 0; 150 151 printf("%s", prompt); 152 do { 153 buffer[i++] = getch(); 154 if(buffer[i-1] == '\b') { 155 /* remove this letter and if this is not the first key, 156 remove the previous one as well */ 157 if(i > 1) { 158 printf("\b \b"); 159 i = i - 2; 160 } 161 else { 162 RingTheBell(); 163 i = i - 1; 164 } 165 } 166 else if(buffer[i-1] != 13) 167 putchar('*'); 168 169 } while((buffer[i-1] != 13) && (i < buflen)); 170 buffer[i-1] = '\0'; 171 printf("\r\n"); 172 return buffer; 173 } 174 #endif /* __NOVELL_LIBC__ */ 175 #define DONE 176 #endif /* NETWARE */ 177 178 #ifndef DONE /* not previously provided */ 179 180 #ifdef HAVE_TERMIOS_H 181 # define struct_term struct termios 182 #elif defined(HAVE_TERMIO_H) 183 # define struct_term struct termio 184 #else 185 # undef struct_term 186 #endif 187 188 static bool ttyecho(bool enable, int fd) 189 { 190 #ifdef struct_term 191 static struct_term withecho; 192 static struct_term noecho; 193 #endif 194 if(!enable) { 195 /* disable echo by extracting the current 'withecho' mode and remove the 196 ECHO bit and set back the struct */ 197 #ifdef HAVE_TERMIOS_H 198 tcgetattr(fd, &withecho); 199 noecho = withecho; 200 noecho.c_lflag &= ~ECHO; 201 tcsetattr(fd, TCSANOW, &noecho); 202 #elif defined(HAVE_TERMIO_H) 203 ioctl(fd, TCGETA, &withecho); 204 noecho = withecho; 205 noecho.c_lflag &= ~ECHO; 206 ioctl(fd, TCSETA, &noecho); 207 #else 208 /* neither HAVE_TERMIO_H nor HAVE_TERMIOS_H, we can't disable echo! */ 209 (void)fd; 210 return FALSE; /* not disabled */ 211 #endif 212 return TRUE; /* disabled */ 213 } 214 /* re-enable echo, assumes we disabled it before (and set the structs we 215 now use to reset the terminal status) */ 216 #ifdef HAVE_TERMIOS_H 217 tcsetattr(fd, TCSAFLUSH, &withecho); 218 #elif defined(HAVE_TERMIO_H) 219 ioctl(fd, TCSETA, &withecho); 220 #else 221 return FALSE; /* not enabled */ 222 #endif 223 return TRUE; /* enabled */ 224 } 225 226 char *getpass_r(const char *prompt, /* prompt to display */ 227 char *password, /* buffer to store password in */ 228 size_t buflen) /* size of buffer to store password in */ 229 { 230 ssize_t nread; 231 bool disabled; 232 int fd = open("/dev/tty", O_RDONLY); 233 if(-1 == fd) 234 fd = STDIN_FILENO; /* use stdin if the tty couldn't be used */ 235 236 disabled = ttyecho(FALSE, fd); /* disable terminal echo */ 237 238 fputs(prompt, stderr); 239 nread = read(fd, password, buflen); 240 if(nread > 0) 241 password[--nread] = '\0'; /* zero terminate where enter is stored */ 242 else 243 password[0] = '\0'; /* got nothing */ 244 245 if(disabled) { 246 /* if echo actually was disabled, add a newline */ 247 fputs("\n", stderr); 248 (void)ttyecho(TRUE, fd); /* enable echo */ 249 } 250 251 if(STDIN_FILENO != fd) 252 close(fd); 253 254 return password; /* return pointer to buffer */ 255 } 256 257 #endif /* DONE */ 258 #endif /* HAVE_GETPASS_R */ 259
