1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 | #include "tool_setup.h"
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23 |
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24 | #ifndef HAVE_GETPASS_R
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25 | /* this file is only for systems without getpass_r() */
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26 |
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27 | #ifdef HAVE_FCNTL_H
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28 | # include <fcntl.h>
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29 | #endif
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30 |
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31 | #ifdef HAVE_TERMIOS_H
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32 | # include <termios.h>
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33 | #elif defined(HAVE_TERMIO_H)
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34 | # include <termio.h>
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35 | #endif
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36 |
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37 | #ifdef __VMS
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38 | # include descrip
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39 | # include starlet
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40 | # include iodef
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41 | #endif
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42 |
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43 | #ifdef WIN32
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44 | # include <conio.h>
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45 | #endif
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46 |
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47 | #ifdef NETWARE
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48 | # ifdef __NOVELL_LIBC__
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49 | # include <screen.h>
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50 | # else
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51 | # include <nwconio.h>
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52 | # endif
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53 | #endif
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54 |
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55 | #ifdef HAVE_UNISTD_H
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56 | #include <unistd.h>
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57 | #endif
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58 | #include "tool_getpass.h"
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59 |
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60 | #include "memdebug.h" /* keep this as LAST include */
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61 |
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62 | #ifdef __VMS
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63 | /* VMS implementation */
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64 | char *getpass_r(const char *prompt, char *buffer, size_t buflen)
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65 | {
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66 | long sts;
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67 | short chan;
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68 |
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69 | /* MSK, 23-JAN-2004, iosbdef.h wasn't in VAX V7.2 or CC 6.4 */
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70 | /* distribution so I created this. May revert back later to */
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71 | /* struct _iosb iosb; */
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72 | struct _iosb
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73 | {
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74 | short int iosb$w_status; /* status */
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75 | short int iosb$w_bcnt; /* byte count */
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76 | int unused; /* unused */
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77 | } iosb;
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78 |
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79 | $DESCRIPTOR(ttdesc, "TT");
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80 |
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81 | buffer[0] = '\0';
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82 | sts = sys$assign(&ttdesc, &chan, 0, 0);
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83 | if(sts & 1) {
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84 | sts = sys$qiow(0, chan,
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85 | IO$_READPROMPT | IO$M_NOECHO,
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86 | &iosb, 0, 0, buffer, buflen, 0, 0,
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87 | prompt, strlen(prompt));
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88 |
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89 | if((sts & 1) && (iosb.iosb$w_status & 1))
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90 | buffer[iosb.iosb$w_bcnt] = '\0';
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91 |
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92 | sts = sys$dassgn(chan);
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93 | }
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94 | return buffer; /* we always return success */
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95 | }
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96 | #define DONE
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97 | #endif /* __VMS */
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98 |
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99 | #ifdef __SYMBIAN32__
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100 | # define getch() getchar()
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101 | #endif
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102 |
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103 | #if defined(WIN32) || defined(__SYMBIAN32__)
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104 |
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105 | char *getpass_r(const char *prompt, char *buffer, size_t buflen)
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106 | {
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107 | size_t i;
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108 | fputs(prompt, stderr);
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109 |
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110 | for(i = 0; i < buflen; i++) {
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111 | buffer[i] = (char)getch();
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112 | if(buffer[i] == '\r' || buffer[i] == '\n') {
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113 | buffer[i] = '\0';
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114 | break;
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115 | }
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116 | else
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117 | if(buffer[i] == '\b')
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118 | /* remove this letter and if this is not the first key, remove the
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119 | previous one as well */
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120 | i = i - (i >= 1 ? 2 : 1);
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121 | }
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122 | #ifndef __SYMBIAN32__
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123 | /* since echo is disabled, print a newline */
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124 | fputs("\n", stderr);
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125 | #endif
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126 | /* if user didn't hit ENTER, terminate buffer */
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127 | if(i == buflen)
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128 | buffer[buflen-1] = '\0';
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129 |
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130 | return buffer; /* we always return success */
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131 | }
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132 | #define DONE
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133 | #endif /* WIN32 || __SYMBIAN32__ */
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134 |
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135 | #ifdef NETWARE
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136 | /* NetWare implementation */
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137 | #ifdef __NOVELL_LIBC__
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138 | char *getpass_r(const char *prompt, char *buffer, size_t buflen)
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139 | {
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140 | return getpassword(prompt, buffer, buflen);
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141 | }
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142 | #else
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143 | char *getpass_r(const char *prompt, char *buffer, size_t buflen)
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144 | {
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145 | size_t i = 0;
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146 |
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147 | printf("%s", prompt);
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148 | do {
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149 | buffer[i++] = getch();
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150 | if(buffer[i-1] == '\b') {
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151 | /* remove this letter and if this is not the first key,
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152 | remove the previous one as well */
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153 | if(i > 1) {
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154 | printf("\b \b");
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155 | i = i - 2;
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156 | }
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157 | else {
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158 | RingTheBell();
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159 | i = i - 1;
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160 | }
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161 | }
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162 | else if(buffer[i-1] != 13)
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163 | putchar('*');
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164 |
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165 | } while((buffer[i-1] != 13) && (i < buflen));
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166 | buffer[i-1] = '\0';
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167 | printf("\r\n");
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168 | return buffer;
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169 | }
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170 | #endif /* __NOVELL_LIBC__ */
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171 | #define DONE
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172 | #endif /* NETWARE */
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173 |
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174 | #ifndef DONE /* not previously provided */
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175 |
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176 | #ifdef HAVE_TERMIOS_H
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177 | # define struct_term struct termios
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178 | #elif defined(HAVE_TERMIO_H)
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179 | # define struct_term struct termio
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180 | #else
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181 | # undef struct_term
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182 | #endif
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183 |
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184 | static bool ttyecho(bool enable, int fd)
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185 | {
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186 | #ifdef struct_term
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187 | static struct_term withecho;
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188 | static struct_term noecho;
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189 | #endif
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190 | if(!enable) {
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191 | /* disable echo by extracting the current 'withecho' mode and remove the
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192 | ECHO bit and set back the struct */
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193 | #ifdef HAVE_TERMIOS_H
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194 | tcgetattr(fd, &withecho);
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195 | noecho = withecho;
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196 | noecho.c_lflag &= ~ECHO;
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197 | tcsetattr(fd, TCSANOW, &noecho);
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198 | #elif defined(HAVE_TERMIO_H)
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199 | ioctl(fd, TCGETA, &withecho);
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200 | noecho = withecho;
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201 | noecho.c_lflag &= ~ECHO;
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202 | ioctl(fd, TCSETA, &noecho);
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203 | #else
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204 | /* neither HAVE_TERMIO_H nor HAVE_TERMIOS_H, we can't disable echo! */
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205 | (void)fd;
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206 | return FALSE; /* not disabled */
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207 | #endif
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208 | return TRUE; /* disabled */
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209 | }
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210 | /* re-enable echo, assumes we disabled it before (and set the structs we
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211 | now use to reset the terminal status) */
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212 | #ifdef HAVE_TERMIOS_H
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213 | tcsetattr(fd, TCSAFLUSH, &withecho);
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214 | #elif defined(HAVE_TERMIO_H)
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215 | ioctl(fd, TCSETA, &withecho);
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216 | #else
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217 | return FALSE; /* not enabled */
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218 | #endif
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219 | return TRUE; /* enabled */
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220 | }
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221 |
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222 | char *getpass_r(const char *prompt, /* prompt to display */
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223 | char *password, /* buffer to store password in */
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224 | size_t buflen) /* size of buffer to store password in */
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225 | {
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226 | ssize_t nread;
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227 | bool disabled;
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228 | int fd = open("/dev/tty", O_RDONLY);
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229 | if(-1 == fd)
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230 | fd = STDIN_FILENO; /* use stdin if the tty couldn't be used */
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231 |
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232 | disabled = ttyecho(FALSE, fd); /* disable terminal echo */
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233 |
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234 | fputs(prompt, stderr);
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235 | nread = read(fd, password, buflen);
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236 | if(nread > 0)
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237 | password[--nread] = '\0'; /* zero terminate where enter is stored */
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238 | else
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239 | password[0] = '\0'; /* got nothing */
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240 |
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241 | if(disabled) {
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242 | /* if echo actually was disabled, add a newline */
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243 | fputs("\n", stderr);
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244 | (void)ttyecho(TRUE, fd); /* enable echo */
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245 | }
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246 |
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247 | if(STDIN_FILENO != fd)
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248 | close(fd);
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249 |
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250 | return password; /* return pointer to buffer */
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251 | }
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252 |
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253 | #endif /* DONE */
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254 | #endif /* HAVE_GETPASS_R */
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