static int login_prompt ( char *buf_name )
{
char buf [1024];
char *sp, *ep;
int i;
for(i=0; i<EMPTY_USERNAME_COUNT; i++) {
print_login_prompt();
if ( !fgets ( buf, sizeof( buf ) - 1, stdin ))
return 0;
if ( !strchr ( buf, '\n' ))
return 0;
for ( sp = buf; isspace ( *sp ); sp++ ) { }
for ( ep = sp; isgraph ( *ep ); ep++ ) { }
*ep = 0;
safe_strncpy(buf_name, sp, USERNAME_SIZE);
if(buf_name[0])
return 1;
}
return 0;
}
static void get_username_or_die(char *buf, int size_buf)
{
int c, cntdown;
cntdown = EMPTY_USERNAME_COUNT;
prompt:
print_login_prompt();
/* skip whitespace */
do {
c = getchar();
if (c == EOF)
exit(EXIT_FAILURE);
if (c == '\n') {
if (!--cntdown)
exit(EXIT_FAILURE);
goto prompt;
}
} while (isspace(c)); /* maybe isblank? */
*buf++ = c;
if (!fgets(buf, size_buf-2, stdin))
exit(EXIT_FAILURE);
if (!strchr(buf, '\n'))
exit(EXIT_FAILURE);
while ((unsigned char)*buf > ' ')
buf++;
*buf = '\0';
}