LCOV - code coverage report
Current view: top level - third_party/heimdal/lib/hcrypto - ui.c (source / functions) Hit Total Coverage
Test: coverage report for master 2f515e9b Lines: 55 85 64.7 %
Date: 2024-04-21 15:09:00 Functions: 2 3 66.7 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 1997 - 2000, 2005 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : 
      34             : #include <config.h>
      35             : #include <roken.h>
      36             : #include <signal.h>
      37             : #ifdef HAVE_TERMIOS_H
      38             : #include <termios.h>
      39             : #endif
      40             : 
      41             : #include <ui.h>
      42             : #ifdef HAVE_CONIO_H
      43             : #include <conio.h>
      44             : #endif
      45             : 
      46             : static sig_atomic_t intr_flag;
      47             : 
      48             : static void
      49           0 : intr(int sig)
      50             : {
      51           0 :     intr_flag++;
      52           0 : }
      53             : 
      54             : #ifdef HAVE_CONIO_H
      55             : 
      56             : /*
      57             :  * Windows does console slightly different then then unix case.
      58             :  */
      59             : 
      60             : static int
      61             : read_string(const char *preprompt, const char *prompt,
      62             :             char *buf, size_t len, int echo)
      63             : {
      64             :     int of = 0;
      65             :     int c;
      66             :     char *p;
      67             :     void (*oldsigintr)(int);
      68             : 
      69             :     _cprintf("%s%s", preprompt, prompt);
      70             : 
      71             :     oldsigintr = signal(SIGINT, intr);
      72             : 
      73             :     p = buf;
      74             :     while(intr_flag == 0){
      75             :         c = ((echo)? _getche(): _getch());
      76             :         if(c == '\n' || c == '\r')
      77             :             break;
      78             :         if(of == 0)
      79             :             *p++ = c;
      80             :         of = (p == buf + len);
      81             :     }
      82             :     if(of)
      83             :         p--;
      84             :     *p = 0;
      85             : 
      86             :     if(echo == 0){
      87             :         printf("\n");
      88             :     }
      89             : 
      90             :     signal(SIGINT, oldsigintr);
      91             : 
      92             :     if(intr_flag)
      93             :         return -2;
      94             :     if(of)
      95             :         return -1;
      96             :     return 0;
      97             : }
      98             : 
      99             : #else /* !HAVE_CONIO_H */
     100             : 
     101             : #ifndef NSIG
     102             : #define NSIG 47
     103             : #endif
     104             : 
     105             : static int
     106          30 : read_string(const char *preprompt, const char *prompt,
     107             :             char *buf, size_t len, int echo)
     108             : {
     109           0 :     struct sigaction sigs[NSIG];
     110           0 :     int oksigs[NSIG];
     111           0 :     struct sigaction sa;
     112           0 :     FILE *tty;
     113          30 :     int ret = 0;
     114          30 :     int of = 0;
     115           0 :     int i;
     116           0 :     int c;
     117           0 :     char *p;
     118             : 
     119           0 :     struct termios t_new, t_old;
     120             : 
     121          30 :     memset(&oksigs, 0, sizeof(oksigs));
     122             : 
     123          30 :     memset(&sa, 0, sizeof(sa));
     124          30 :     sa.sa_handler = intr;
     125          30 :     sigemptyset(&sa.sa_mask);
     126          30 :     sa.sa_flags = 0;
     127        1950 :     for(i = 1; i < sizeof(sigs) / sizeof(sigs[0]); i++)
     128        1920 :         if (i != SIGALRM)
     129        1890 :             if (sigaction(i, &sa, &sigs[i]) == 0)
     130        1770 :                 oksigs[i] = 1;
     131             : 
     132          30 :     if((tty = fopen("/dev/tty", "r")) != NULL)
     133           0 :         rk_cloexec_file(tty);
     134             :     else
     135          30 :         tty = stdin;
     136             : 
     137          30 :     fprintf(stderr, "%s%s", preprompt, prompt);
     138          30 :     fflush(stderr);
     139             : 
     140          30 :     if(echo == 0){
     141          30 :         tcgetattr(fileno(tty), &t_old);
     142          30 :         memcpy(&t_new, &t_old, sizeof(t_new));
     143          30 :         t_new.c_lflag &= ~ECHO;
     144          30 :         tcsetattr(fileno(tty), TCSANOW, &t_new);
     145             :     }
     146          30 :     intr_flag = 0;
     147          30 :     p = buf;
     148         381 :     while(intr_flag == 0){
     149         381 :         c = getc(tty);
     150         381 :         if(c == EOF){
     151           0 :             if(!ferror(tty))
     152           0 :                 ret = 1;
     153           0 :             break;
     154             :         }
     155         381 :         if(c == '\n')
     156          30 :             break;
     157         351 :         if(of == 0)
     158         351 :             *p++ = c;
     159         351 :         of = (p == buf + len);
     160             :     }
     161          30 :     if(of)
     162           0 :         p--;
     163          30 :     *p = 0;
     164             : 
     165          30 :     if(echo == 0){
     166          30 :         fprintf(stderr, "\n");
     167          30 :         tcsetattr(fileno(tty), TCSANOW, &t_old);
     168             :     }
     169             : 
     170          30 :     if(tty != stdin)
     171           0 :         fclose(tty);
     172             : 
     173        1950 :     for(i = 1; i < sizeof(sigs) / sizeof(sigs[0]); i++)
     174        1920 :         if (oksigs[i])
     175        1770 :             sigaction(i, &sigs[i], NULL);
     176             : 
     177          30 :     if(ret)
     178           0 :         return -3;
     179          30 :     if(intr_flag)
     180           0 :         return -2;
     181          30 :     if(of)
     182           0 :         return -1;
     183          30 :     return 0;
     184             : }
     185             : 
     186             : #endif /* HAVE_CONIO_H */
     187             : 
     188             : int
     189          24 : UI_UTIL_read_pw_string(char *buf, int length, const char *prompt, int verify)
     190             : {
     191           0 :     int ret;
     192             : 
     193          24 :     ret = read_string("", prompt, buf, length, 0);
     194          24 :     if (ret)
     195           0 :         return ret;
     196             : 
     197          24 :     if (verify & UI_UTIL_FLAG_VERIFY) {
     198           0 :         char *buf2;
     199           6 :         buf2 = malloc(length);
     200           6 :         if (buf2 == NULL)
     201           0 :             return 1;
     202             : 
     203           6 :         ret = read_string("Verify password - ", prompt, buf2, length, 0);
     204           6 :         if (ret) {
     205           0 :             free(buf2);
     206           0 :             return ret;
     207             :         }
     208           6 :         if (strcmp(buf2, buf) != 0) {
     209           0 :             if (!(verify & UI_UTIL_FLAG_VERIFY_SILENT)) {
     210           0 :                 fprintf(stderr, "Verify failure\n");
     211           0 :                 fflush(stderr);
     212             :             }
     213           0 :             ret = 1;
     214             :         }
     215           6 :         free(buf2);
     216             :     }
     217          24 :     return ret;
     218             : }

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