root/main/trunk/greenstone2/common-src/src/getpw/getpw.cpp @ 26798

Revision 26798, 5.3 KB (checked in by davidb, 7 years ago)

Support for cross-compiling with Android-NDK added

  • Property svn:keywords set to Author Date Id Revision
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1/**********************************************************************
2 *
3 * getpw.cpp --
4 * A component of the Greenstone digital library software
5 * from the New Zealand Digital Library Project at the
6 * University of Waikato, New Zealand.
7 *
8 * Copyright (C) 2000  The New Zealand Digital Library Project
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 **********************************************************************/
25
26#define _XOPEN_SOURCE 1
27// This was added for Solaris, but it makes things worse on Solaris for me...
28// #define _XOPEN_SOURCE_EXTENDED 1
29
30// Windows version seems to be sensitive to the order of <iostream> and <crypt.h>
31// having <iostream> *after* <crypt.h> lead to linking error such as:
32//    __freea already defined in getpw.obj
33// which seems to be caused by compiler confusion of whether it should be using
34// /MD or /MT (which control dynamic or static/multi-threaded linking)
35
36#if defined(GSDL_USE_OBJECTSPACE)
37#  include <ospace\std\iostream>
38#elif defined(GSDL_USE_IOS_H)
39#  include <iostream.h>
40#else
41#  include <iostream>
42#endif
43
44// use the standard namespace
45#if !defined (GSDL_NAMESPACE_BROKEN)
46#  if defined(GSDL_USE_OBJECTSPACE)
47using namespace ospace::std;
48#  else
49using namespace std;
50#  endif
51#endif
52
53#include "gsdlconf.h"
54
55// include crypt
56#if defined(_MSC_VER)
57#  include <windows.h>
58#  include <stdio.h>
59#  include <crypt.h>
60#else
61#  include "config.h"
62#  include <getpass.h>
63#  include <crypt.h>
64
65
66#  if defined(HAVE_UNISTD_H)
67#  include <unistd.h>
68#  endif
69/* we are probably in trouble if we have neither crypt.h or unistd.h,
70   but for now we'll do nothing about it... */
71
72#endif  /* not _MSC_VER */
73
74#include <string.h>
75//#include <pwd.h>
76
77#if defined(_MSC_VER)
78char* getPassword(HANDLE hSTDIN)
79{
80    char a[129];
81    int charCount = 0;
82    DWORD cNumRead;
83    INPUT_RECORD irIn[128];
84   
85    bool done = false;
86    while (!done)
87    {
88        if (!ReadConsoleInput(hSTDIN, irIn, 128, &cNumRead))
89        {
90            cerr << "There was an error reading input from the console\n";
91            return strdup("");
92        }
93       
94        for(int j = 0; j < cNumRead; j++)
95        {
96            if(irIn[j].EventType == KEY_EVENT)
97            {
98                KEY_EVENT_RECORD keyEvent = irIn[j].Event.KeyEvent;
99                if(keyEvent.bKeyDown == false)
100                {
101                    if(keyEvent.wVirtualKeyCode == VK_RETURN)
102                    {
103                        done = true;
104                        cout << "\n";
105                    }
106                    else
107                    {
108                        if(charCount < 129)
109                        {
110                            a[charCount++] = keyEvent.uChar.AsciiChar;
111                        }
112                    }
113                }
114            }
115        }
116    }
117    a[charCount] = '\0';
118    return strdup(a);
119}
120#endif
121
122
123#if defined(__ANDROID__)
124
125// See:
126//  http://stackoverflow.com/questions/1196418/getting-a-password-in-c-without-using-getpass-3
127
128#include <stdio.h>
129#include <stdlib.h>
130#include <termios.h>
131
132char* getpass(const char* prompt)
133{
134    struct termios oflags, nflags;
135    char* password = (char*)malloc(64);
136
137    /* disabling echo */
138    tcgetattr(fileno(stdin), &oflags);
139    nflags = oflags;
140    nflags.c_lflag &= ~ECHO;
141    nflags.c_lflag |= ECHONL;
142
143    if (tcsetattr(fileno(stdin), TCSANOW, &nflags) != 0) {
144        perror("tcsetattr");
145        return NULL;
146    }
147
148    printf(prompt);
149    fgets(password, sizeof(password), stdin);
150    password[strlen(password) - 1] = 0;
151
152    /* restore terminal */
153    if (tcsetattr(fileno(stdin), TCSANOW, &oflags) != 0) {
154        perror("tcsetattr");
155        return NULL;
156    }
157
158    return password;
159}
160#endif
161
162
163
164
165int main (int argc, char *argv[]) {
166
167  int password_ok = 0;
168  char c[129];
169  int i;
170 
171  for (i=0; i<3; i++)  {
172#if defined(_MSC_VER)
173    HANDLE hSTDIN;
174    DWORD fdwMode, fdwPrevMode;
175    int counter=0;
176   
177    hSTDIN = GetStdHandle(STD_INPUT_HANDLE);
178    if (hSTDIN == INVALID_HANDLE_VALUE)
179    {
180        cerr << "There was an error getting a handle to the standard input\n";
181        return 1;
182    }
183   
184    if (!GetConsoleMode(hSTDIN, &fdwPrevMode))
185    {
186        cerr << "There was an error getting a handle to the current console mode\n";
187        return 2;
188    }
189   
190    fdwMode = NULL;
191    if (!SetConsoleMode(hSTDIN, fdwMode))
192    {
193        cerr << "There was an error setting the new handle mode\n";
194        return 3;
195    }
196   
197    cerr << "Enter password:";
198    char* a = getPassword(hSTDIN);
199#else
200    char* a = getpass("Enter password:");
201#endif
202    int len = strlen (a);
203    if (len < 3 || len > 128) {
204      cerr << "Password must be between 3 and 128 characters long. Try again\n";
205      continue;
206    }
207
208    strcpy (c, a);
209   
210#if defined(_MSC_VER)
211    cerr << "Re-enter password: ";
212    char* b = getPassword(hSTDIN);
213#else
214    char* b = getpass("Re-enter password:"); 
215#endif
216    if ((strcmp (c, b)) == 0) {
217      password_ok = 1;
218      break;
219    }
220    else {
221      cerr << "Passwords didn't match. Try again.\n";
222    }
223  }
224
225  if (!password_ok) {
226    cerr << "Failed to capture password." << endl;
227    return -1;
228  }
229 
230  char *salt = "Tp";
231  char *pw = crypt (c, salt);
232
233  cout << pw << "\n";
234
235  return 0;
236}
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