I hereby relicense all my work on Sortix under the ISC license as below. All Sortix contributions by other people are already under this license, are not substantial enough to be copyrightable, or have been removed. All imported code from other projects is compatible with this license. All GPL licensed code from other projects had previously been removed. Copyright 2011-2016 Jonas 'Sortie' Termansen and contributors. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
220 lines
4.9 KiB
C
220 lines
4.9 KiB
C
/*
|
|
* Copyright (c) 2015, 2016 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* interactive.c
|
|
* Interactive utility functions.
|
|
*/
|
|
|
|
#include <sys/termmode.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <limits.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <termios.h>
|
|
#include <wchar.h>
|
|
|
|
#include "execute.h"
|
|
#include "interactive.h"
|
|
|
|
void shlvl(void)
|
|
{
|
|
long shlvl = 0;
|
|
if ( getenv("SHLVL") && (shlvl = atol(getenv("SHLVL"))) < 0 )
|
|
shlvl = 0;
|
|
if ( shlvl < LONG_MAX )
|
|
shlvl++;
|
|
char shlvl_string[sizeof(long) * 3];
|
|
snprintf(shlvl_string, sizeof(shlvl_string), "%li", shlvl);
|
|
setenv("SHLVL", shlvl_string, 1);
|
|
}
|
|
|
|
void text(const char* str)
|
|
{
|
|
fflush(stdout);
|
|
struct winsize ws;
|
|
if ( tcgetwinsize(1, &ws) < 0 )
|
|
err(2, "tcgetwinsize");
|
|
struct wincurpos wcp;
|
|
if ( tcgetwincurpos(1, &wcp) < 0 )
|
|
err(2, "tcgetwinsize");
|
|
size_t columns = ws.ws_col;
|
|
size_t column = wcp.wcp_col;
|
|
bool blank = false;
|
|
while ( str[0] )
|
|
{
|
|
if ( str[0] == '\n' )
|
|
{
|
|
putchar('\n');
|
|
blank = false;
|
|
column = 0;
|
|
str++;
|
|
continue;
|
|
}
|
|
else if ( isblank((unsigned char) str[0]) )
|
|
{
|
|
blank = true;
|
|
str++;
|
|
continue;
|
|
}
|
|
size_t word_length = 0;
|
|
size_t word_columns = 0;
|
|
mbstate_t ps = { 0 };
|
|
while ( str[word_length] &&
|
|
str[word_length] != '\n' &&
|
|
!isblank((unsigned char) str[word_length]) )
|
|
{
|
|
wchar_t wc;
|
|
size_t amount = mbrtowc(&wc, str + word_length, SIZE_MAX, &ps);
|
|
if ( amount == (size_t) -2 )
|
|
break;
|
|
if ( amount == (size_t) -1 )
|
|
{
|
|
memset(&ps, 0, sizeof(ps));
|
|
amount = 1;
|
|
}
|
|
if ( amount == (size_t) 0 )
|
|
break;
|
|
word_length += amount;
|
|
int width = wcwidth(wc);
|
|
if ( width < 0 )
|
|
continue;
|
|
word_columns += width;
|
|
}
|
|
if ( (column && blank ? 1 : 0) + word_columns <= columns - column )
|
|
{
|
|
if ( column && blank )
|
|
{
|
|
putchar(' ');
|
|
column++;
|
|
}
|
|
blank = false;
|
|
fwrite(str, 1, word_length, stdout);
|
|
column += word_columns;
|
|
if ( column == columns )
|
|
column = 0;
|
|
}
|
|
else
|
|
{
|
|
if ( column != 0 && column != columns )
|
|
putchar('\n');
|
|
column = 0;
|
|
blank = false;
|
|
fwrite(str, 1, word_length, stdout);
|
|
column += word_columns;
|
|
column %= columns;
|
|
}
|
|
str += word_length;
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
|
|
void textf(const char* format, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, format);
|
|
char* str;
|
|
int len = vasprintf(&str, format, ap);
|
|
va_end(ap);
|
|
if ( len < 0 )
|
|
{
|
|
vprintf(format, ap);
|
|
return;
|
|
}
|
|
text(str);
|
|
free(str);
|
|
}
|
|
|
|
void prompt(char* buffer,
|
|
size_t buffer_size,
|
|
const char* question,
|
|
const char* answer)
|
|
{
|
|
while ( true )
|
|
{
|
|
text(question);
|
|
if ( answer )
|
|
printf(" [%s] ", answer);
|
|
else
|
|
printf(" ");
|
|
fflush(stdout);
|
|
fgets(buffer, buffer_size, stdin);
|
|
size_t buffer_length = strlen(buffer);
|
|
if ( buffer_length && buffer[buffer_length-1] == '\n' )
|
|
buffer[--buffer_length] = '\0';
|
|
while ( buffer_length && buffer[buffer_length-1] == ' ' )
|
|
buffer[--buffer_length] = '\0';
|
|
if ( !strcmp(buffer, "") )
|
|
{
|
|
if ( !answer )
|
|
continue;
|
|
strlcpy(buffer, answer, buffer_size);
|
|
}
|
|
if ( !strcmp(buffer, "!") )
|
|
{
|
|
printf("Type 'exit' to return to install.\n");
|
|
fflush(stdout);
|
|
execute((const char*[]) { "sh", NULL }, "f");
|
|
continue;
|
|
}
|
|
if ( !strcmp(buffer, "!man") )
|
|
{
|
|
execute((const char*[]) { "man", prompt_man_section,
|
|
prompt_man_page, NULL }, "f");
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void password(char* buffer,
|
|
size_t buffer_size,
|
|
const char* question)
|
|
{
|
|
unsigned int termmode;
|
|
gettermmode(0, &termmode);
|
|
settermmode(0, termmode & ~TERMMODE_ECHO);
|
|
text(question);
|
|
printf(" ");
|
|
fflush(stdout);
|
|
fflush(stdin);
|
|
// TODO: This may leave a copy of the password in the stdio buffer.
|
|
fgets(buffer, buffer_size, stdin);
|
|
fflush(stdin);
|
|
printf("\n");
|
|
size_t buffer_length = strlen(buffer);
|
|
if ( buffer_length && buffer[buffer_length-1] == '\n' )
|
|
buffer[--buffer_length] = '\0';
|
|
settermmode(0, termmode);
|
|
}
|
|
|
|
static bool has_program(const char* program)
|
|
{
|
|
return execute((const char*[]) { "which", "--", program, NULL }, "q") == 0;
|
|
}
|
|
|
|
bool missing_program(const char* program)
|
|
{
|
|
if ( has_program(program) )
|
|
return false;
|
|
warnx("%s: Program is absent", program);
|
|
return true;
|
|
}
|