[BACK]Return to readpass.c CVS log [TXT][DIR] Up to [local] / src / usr.bin / ssh

Diff for /src/usr.bin/ssh/readpass.c between version 1.14 and 1.15

version 1.14, 2001/02/08 19:30:52 version 1.15, 2001/04/18 21:57:41
Line 37 
Line 37 
 #include "xmalloc.h"  #include "xmalloc.h"
 #include "cli.h"  #include "cli.h"
 #include "readpass.h"  #include "readpass.h"
   #include "pathnames.h"
   #include "log.h"
   #include "atomicio.h"
   #include "ssh.h"
   
   char *
   ssh_askpass(char *askpass, char *msg)
   {
           pid_t pid;
           size_t len;
           char *nl, *pass;
           int p[2], status;
           char buf[1024];
   
           if (fflush(stdout) != 0)
                   error("ssh_askpass: fflush: %s", strerror(errno));
           if (askpass == NULL)
                   fatal("internal error: askpass undefined");
           if (pipe(p) < 0)
                   fatal("ssh_askpass: pipe: %s", strerror(errno));
           if ((pid = fork()) < 0)
                   fatal("ssh_askpass: fork: %s", strerror(errno));
           if (pid == 0) {
                   seteuid(getuid());
                   setuid(getuid());
                   close(p[0]);
                   if (dup2(p[1], STDOUT_FILENO) < 0)
                           fatal("ssh_askpass: dup2: %s", strerror(errno));
                   execlp(askpass, askpass, msg, (char *) 0);
                   fatal("ssh_askpass: exec(%s): %s", askpass, strerror(errno));
           }
           close(p[1]);
           len = read(p[0], buf, sizeof buf);
           close(p[0]);
           while (waitpid(pid, &status, 0) < 0)
                   if (errno != EINTR)
                           break;
           if (len <= 1)
                   return xstrdup("");
           nl = strchr(buf, '\n');
           if (nl)
                   *nl = '\0';
           pass = xstrdup(buf);
           memset(buf, 0, sizeof(buf));
           return pass;
   }
   
   
 /*  /*
  * Reads a passphrase from /dev/tty with echo turned off.  Returns the   * Reads a passphrase from /dev/tty with echo turned off.  Returns the
  * passphrase (allocated with xmalloc), being very careful to ensure that   * passphrase (allocated with xmalloc), being very careful to ensure that
Line 51 
Line 98 
 char *  char *
 read_passphrase(char *prompt, int from_stdin)  read_passphrase(char *prompt, int from_stdin)
 {  {
           char *askpass = NULL;
           int use_askpass = 0, ttyfd;
   
           if (from_stdin) {
                   if (!isatty(STDIN_FILENO))
                           use_askpass = 1;
           } else {
                   ttyfd = open("/dev/tty", O_RDWR);
                   if (ttyfd >= 0)
                           close(ttyfd);
                   else
                           use_askpass = 1;
           }
   
           if (use_askpass && getenv("DISPLAY")) {
                   if (getenv(SSH_ASKPASS_ENV))
                           askpass = getenv(SSH_ASKPASS_ENV);
                   else
                           askpass = _PATH_SSH_ASKPASS_DEFAULT;
                   return ssh_askpass(askpass, prompt);
           }
   
         return cli_read_passphrase(prompt, from_stdin, 0);          return cli_read_passphrase(prompt, from_stdin, 0);
 }  }

Legend:
Removed from v.1.14  
changed lines
  Added in v.1.15