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pinentry-dmenu/pinentry-dmenu.c

424 lines
8.7 KiB

#include <signal.h>
#include <time.h>
#include <ctype.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <string.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
#include "pinentry/pinentry.h"
#include "pinentry/memory.h"
/* macros */
#define INTERSECT(x, y, w, h, r) \
(MAX(0, MIN((x)+(w),(r).x_org+(r).width) - MAX((x),(r).x_org)) \
&& MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
#define LENGTH(X) (sizeof X / sizeof X[0])
#define TEXTNW(X, N) (drw_font_getexts_width(drw->fonts[0], (X), (N)))
#define TEXTW(X) (drw_text(drw, 0, 0, 0, 0, (X), 0) + drw->fonts[0]->h)
const char *str_OK = "OK\n";
const char *str_ERRUNPARS = "ERR1337 dunno what to do with it\n";
const char *str_ERRNOTIMP = "ERR4100 not implemented yet\n";
/* enums */
enum { SchemeNorm, SchemeSel, SchemeLast }; /* color schemes */
enum { WinPin, WinConfirm }; /* window modes */
enum { Ok, NotOk, Cancel }; /* return status */
static char text[2048] = "";
static int bh, mw, mh;
static int inputw, promptw;
static size_t cursor = 0;
static Atom clip, utf8;
static Window win;
static XIC xic;
static int mon = -1;
static ClrScheme scheme[SchemeLast];
static Display *dpy;
static int screen;
static Window root;
static Drw *drw;
static int sw, sh;
static int timed_out;
static int confirmed;
static int winmode;
pinentry_t pinentry;
#include "config.h"
void
grabkeyboard(void) {
int i;
/* try to grab keyboard,
* we may have to wait for another process to ungrab */
for (i = 0; i < 1000; i++) {
if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
GrabModeAsync, CurrentTime) == GrabSuccess) {
return;
}
usleep(1000);
}
die("cannot grab keyboard\n");
}
size_t
nextrune(int cursor, int inc) {
ssize_t n;
/* return location of next utf8 rune in the given direction (+1 or -1) */
for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc);
return n;
}
void
insert(const char *str, ssize_t n) {
if (strlen(text) + n > sizeof text - 1) {
return;
}
/* move existing text out of the way, insert new text, and update cursor */
memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
if (n > 0) {
memcpy(&text[cursor], str, n);
}
cursor += n;
}
void
drawwin(void) {
int curpos;
int x = 0, y = 0, bh, w;
char *sectext;
int i;
int seccursor = 0;
ssize_t n;
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_rect(drw, 0, 0, mw, mh, True, 1, 1);
if ((pinentry->description) && *(pinentry->description)) {
drw_setscheme(drw, &scheme[SchemeSel]);
drw_text(drw, 0, 0, mw, bh, pinentry->description, 0);
y += bh;
}
if ((pinentry->prompt) && *(pinentry->prompt)) {
drw_setscheme(drw, &scheme[SchemeSel]);
drw_text(drw, x, y, promptw, bh, pinentry->prompt, 0);
x += promptw;
}
w = inputw;
drw_setscheme(drw, &scheme[SchemeNorm]);
sectext = malloc (sizeof (char) * 2048);
sectext[0] = '\0';
for (i=0; text[i]!='\0'; i=nextrune(i, +1)) {
strcat(sectext, secstring);
if (i < cursor) {
for (n = seccursor + 1; n + 1 >= 0 && (sectext[n] & 0xc0) == 0x80;
n ++);
seccursor = n;
}
}
if (winmode == WinPin) {
drw_text(drw, x, y, mw, bh, sectext, 0);
if ((curpos = TEXTNW(sectext, seccursor) + bh/2 - 2) < w) {
drw_rect(drw, x + curpos + 2, y + 2, 1 , bh - 4 , True, 1, 0);
}
} else {
drw_text(drw, x, y, mw, bh, "(y/n)", 0);
}
drw_map(drw, win, 0, 0, mw, mh);
}
void
setup(void){
int x,y;
XSetWindowAttributes swa;
XIM xim;
scheme[SchemeNorm].bg = drw_clr_create(drw, normbgcolor);
scheme[SchemeNorm].fg = drw_clr_create(drw, normfgcolor);
scheme[SchemeSel].bg = drw_clr_create(drw, selbgcolor);
scheme[SchemeSel].fg = drw_clr_create(drw, selfgcolor);
clip = XInternAtom(dpy, "CLIPBOARD", False);
utf8 = XInternAtom(dpy, "UTF8_STRING", False);
bh = drw->fonts[0]->h + 2;
mh = (pinentry->description && *(pinentry->description))? bh * 2 : bh;
x = 0;
y = topbar ? 0 : sh - mh;
mw = sw;
promptw = (pinentry->prompt && *(pinentry->prompt)) ? TEXTW(pinentry->prompt) : 0;
inputw = mw-promptw;
swa.override_redirect = True;
swa.background_pixel = scheme[SchemeNorm].bg->pix;
swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
DefaultDepth(dpy, screen), CopyFromParent,
DefaultVisual(dpy, screen),
CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
xim = XOpenIM(dpy, NULL, NULL, NULL);
xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
XNClientWindow, win, XNFocusWindow, win, NULL);
XMapRaised(dpy, win);
drw_resize(drw, mw, mh);
drawwin();
}
void
cleanup(void) {
XUngrabKey(dpy, AnyKey, AnyModifier, root);
drw_clr_free(scheme[SchemeNorm].bg);
drw_clr_free(scheme[SchemeNorm].fg);
drw_clr_free(scheme[SchemeSel].fg);
drw_clr_free(scheme[SchemeSel].bg);
drw_free(drw);
XSync(dpy, False);
XCloseDisplay(dpy);
}
static int
keypress(XKeyEvent *ev) {
char buf[32];
int len;
KeySym ksym = NoSymbol;
Status status;
len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
if (status == XBufferOverflow) {
return 0;
}
if (winmode == WinConfirm) {
switch(ksym){
case XK_KP_Enter:
case XK_Return:
case XK_y:
confirmed = 1;
return 1;
break;
case XK_n:
confirmed = 0;
return 1;
break;
case XK_Escape:
pinentry->canceled = 1;
confirmed = 0;
return 1;
break;
}
} else {
switch(ksym){
default:
if (!iscntrl(*buf)) {
insert(buf, len);
}
break;
case XK_Delete:
if (text[cursor] == '\0') {
return 0;
}
cursor = nextrune(cursor, +1);
/* fallthrough */
case XK_BackSpace:
if (cursor == 0) {
return 0;
}
insert(NULL, nextrune(cursor, -1) - cursor);
break;
case XK_Escape:
pinentry->canceled = 1;
return 1;
/*cleanup();
exit(1);*/
break;
case XK_Left:
if (cursor > 0) {
cursor = nextrune(cursor, -1);
}
break;
case XK_Right:
if (text[cursor]!='\0') {
cursor = nextrune(cursor, +1);
}
break;
case XK_Return:
case XK_KP_Enter:
return 1;
break;
}
}
drawwin();
return 0;
}
void
paste(void) {
char *p, *q;
int di;
unsigned long dl;
Atom da;
/* we have been given the current selection, now insert it into input */
XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
utf8, &da, &di, &dl, &dl, (unsigned char **)&p);
insert(p, (q = strchr(p, '\n')) ? q-p : (ssize_t)strlen(p));
XFree(p);
drawwin();
}
void
run(void) {
XEvent ev;
while(!XNextEvent(dpy, &ev)) {
if (XFilterEvent(&ev, win)) {
continue; /* what is this I don't even */
}
switch(ev.type) {
case Expose:
if (ev.xexpose.count == 0) {
drw_map(drw, win, 0, 0, mw, mh);
}
break;
case KeyPress:
if (keypress(&ev.xkey)) {
return;
}
break;
case SelectionNotify:
if (ev.xselection.property == utf8) {
paste();
}
break;
case VisibilityNotify:
if (ev.xvisibility.state != VisibilityUnobscured) {
XRaiseWindow(dpy, win);
}
break;
}
}
}
void
promptwin(void) {
grabkeyboard();
setup();
run();
cleanup();
}
static void
catchsig(int sig) {
if (sig == SIGALRM) {
timed_out = 1;
}
}
static int
password (void) {
char *buf;
winmode = WinPin;
promptwin();
if (pinentry->canceled) {
return -1;
}
buf = secmem_malloc(strlen(text));
strcpy(buf, text);
pinentry_setbuffer_use (pinentry, buf, 0);
return 1;
}
static int
confirm(void) {
winmode = WinConfirm;
confirmed = 0;
promptwin();
return confirmed;
}
static int
cmdhandler (pinentry_t recieved_pinentry) {
struct sigaction sa;
text[0]='\0';
cursor = 0;
pinentry = recieved_pinentry;
if (!setlocale(LC_CTYPE, "") || !XSupportsLocale()) {
fputs("warning: no locale support\n", stderr);
}
if (!(dpy = XOpenDisplay(pinentry->display))) { /* NULL was here */
die("dmenu: cannot open display\n");
}
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
drw = drw_create(dpy, screen, root, sw, sh);
drw_load_fonts(drw, fonts, LENGTH(fonts));
if (!drw->fontcount) {
die("No fonts could be loaded.\n");
}
drw_setscheme(drw, &scheme[SchemeNorm]);
if (pinentry->timeout) {
memset(&sa, 0, sizeof(sa));
sa.sa_handler = catchsig;
sigaction(SIGALRM, &sa, NULL);
alarm(pinentry->timeout);
}
if (pinentry->pin) {
return password();
} else {
return confirm();
}
return -1;
}
pinentry_cmd_handler_t pinentry_cmd_handler = cmdhandler;
int
main(int argc, char *argv[]) {
pinentry_init("pinentry-dmenu");
pinentry_parse_opts(argc, argv);
if (pinentry_loop()) {
return 1;
}
return 0;
}