327 lines
8.1 KiB
C
327 lines
8.1 KiB
C
#include <X11/Xlib.h>
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#include <X11/cursorfont.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <assert.h>
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#include <glib.h>
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gint fail(const gchar *s) {
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if (s)
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fprintf(stderr, "%s\n", s);
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else
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fprintf
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(stderr,
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"Usage: obxprop [OPTIONS]\n\n"
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"Options:\n"
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" --help Display this help and exit\n"
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" --display DISPLAY Connect to this X display\n"
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" --id ID Show the properties for this window\n"
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" --root Show the properties for the root window\n");
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return 1;
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}
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gint parse_hex(gchar *s) {
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gint result = 0;
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while (*s) {
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gint add;
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if (*s >= '0' && *s <='9')
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add = *s-'0';
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else if (*s >= 'A' && *s <='F')
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add = *s-'A';
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else if (*s >= 'a' && *s <='f')
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add = *s-'a';
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else
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break;
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result *= 16;
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result += add;
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}
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return result;
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}
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Window find_client(Display *d, Window win)
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{
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Window r, *children;
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guint n, i;
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Atom state = XInternAtom(d, "WM_STATE", True);
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Atom ret_type;
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gint ret_format, res;
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gulong ret_items, ret_bytesleft, *xdata;
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XQueryTree(d, win, &r, &r, &children, &n);
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for (i = 0; i < n; ++i) {
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Window w = find_client(d, children[i]);
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if (w) return w;
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}
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// try me
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res = XGetWindowProperty(d, win, state, 0, 1,
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False, state, &ret_type, &ret_format,
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&ret_items, &ret_bytesleft,
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(unsigned char**) &xdata);
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XFree(xdata);
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if (res != Success || ret_type == None || ret_items < 1)
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return None;
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return win; // found it!
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}
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static gboolean get_all(Display *d, Window win, Atom prop,
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Atom *type, gint *size,
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guchar **data, guint *num)
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{
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gboolean ret = FALSE;
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gint res;
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guchar *xdata = NULL;
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gulong ret_items, bytes_left;
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res = XGetWindowProperty(d, win, prop, 0l, G_MAXLONG,
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FALSE, AnyPropertyType, type, size,
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&ret_items, &bytes_left, &xdata);
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if (res == Success) {
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if (ret_items > 0) {
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guint i;
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*data = g_malloc(ret_items * (*size / 8));
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for (i = 0; i < ret_items; ++i)
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switch (*size) {
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case 8:
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(*data)[i] = xdata[i];
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break;
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case 16:
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((guint16*)*data)[i] = ((gushort*)xdata)[i];
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break;
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case 32:
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((guint32*)*data)[i] = ((gulong*)xdata)[i];
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break;
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default:
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g_assert_not_reached(); /* unhandled size */
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}
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*num = ret_items;
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ret = TRUE;
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}
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XFree(xdata);
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}
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return ret;
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}
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gchar *append_string(gchar *before, gchar *after, gboolean quote)
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{
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gchar *tmp;
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const gchar *q = quote ? "\"" : "";
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if (before)
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tmp = g_strdup_printf("%s, %s%s%s", before, q, after, q);
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else
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tmp = g_strdup_printf("%s%s%s", q, after, q);
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g_free(before);
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return tmp;
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}
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gchar *append_int(gchar *before, guint after)
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{
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gchar *tmp;
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if (before)
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tmp = g_strdup_printf("%s, %u", before, after);
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else
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tmp = g_strdup_printf("%u", after);
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g_free(before);
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return tmp;
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}
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gchar* read_strings(gchar *val, guint n, gboolean utf8)
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{
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GSList *strs = NULL, *it;
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gchar *ret, *p;
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guint i;
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p = val;
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while (p < val + n) {
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strs = g_slist_append(strs, g_strndup(p, n - (p - val)));
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p += strlen(p) + 1; /* next string */
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}
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ret = NULL;
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for (i = 0, it = strs; it; ++i, it = g_slist_next(it)) {
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char *data;
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if (utf8) {
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if (g_utf8_validate(it->data, -1, NULL))
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data = g_strdup(it->data);
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else
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data = g_strdup("");
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}
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else
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data = g_locale_to_utf8(it->data, -1, NULL, NULL, NULL);
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ret = append_string(ret, data, TRUE);
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g_free(data);
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}
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while (strs) {
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g_free(strs->data);
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strs = g_slist_delete_link(strs, strs);
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}
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return ret;
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}
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gchar* read_atoms(Display *d, guchar *val, guint n)
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{
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gchar *ret;
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guint i;
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ret = NULL;
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for (i = 0; i < n; ++i)
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ret = append_string(ret, XGetAtomName(d, ((guint32*)val)[i]), FALSE);
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return ret;
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}
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gchar* read_numbers(guchar *val, guint n, guint size)
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{
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gchar *ret;
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guint i;
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ret = NULL;
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for (i = 0; i < n; ++i)
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switch (size) {
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case 8:
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ret = append_int(ret, ((guint8*)val)[i]);
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break;
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case 16:
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ret = append_int(ret, ((guint16*)val)[i]);
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break;
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case 32:
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ret = append_int(ret, ((guint32*)val)[i]);
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break;
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default:
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g_assert_not_reached(); /* unhandled size */
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}
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return ret;
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}
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gboolean read_prop(Display *d, Window w, Atom prop, const gchar **type, gchar **val)
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{
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guchar *ret;
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guint nret;
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gint size;
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Atom ret_type;
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ret = NULL;
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if (get_all(d, w, prop, &ret_type, &size, &ret, &nret)) {
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*type = XGetAtomName(d, ret_type);
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if (strcmp(*type, "STRING") == 0)
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*val = read_strings((gchar*)ret, nret, FALSE);
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else if (strcmp(*type, "UTF8_STRING") == 0)
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*val = read_strings((gchar*)ret, nret, TRUE);
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else if (strcmp(*type, "ATOM") == 0) {
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g_assert(size == 32);
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*val = read_atoms(d, ret, nret);
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}
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else
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*val = read_numbers(ret, nret, size);
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g_free(ret);
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return TRUE;
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}
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return FALSE;
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}
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void show_properties(Display *d, Window w)
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{
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Atom* props;
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int i, n;
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props = XListProperties(d, w, &n);
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for (i = 0; i < n; ++i) {
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const char *type;
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char *name, *val;
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name = XGetAtomName(d, props[i]);
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if (read_prop(d, w, props[i], &type, &val)) {
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g_print("%s(%s) = %s\n", name, type, val);
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g_free(val);
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}
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XFree(name);
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}
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XFree(props);
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}
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int main(int argc, char **argv)
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{
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Display *d;
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Window id, userid = None;
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int i;
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char *dname = NULL;
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gboolean root = FALSE;
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for (i = 1; i < argc; ++i) {
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if (!strcmp(argv[i], "--help")) {
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return fail(0);
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}
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else if (!strcmp(argv[i], "--root"))
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root = TRUE;
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else if (!strcmp(argv[i], "--id")) {
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if (++i == argc)
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return fail(0);
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if (argv[i][0] == '0' && argv[i][1] == 'x') {
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/* hex */
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userid = parse_hex(argv[i]+2);
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}
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else {
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/* decimal */
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userid = atoi(argv[i]);
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}
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break;
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}
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else if (!strcmp(argv[i], "--display")) {
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if (++i == argc)
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return fail(0);
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dname = argv[i];
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}
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}
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d = XOpenDisplay(dname);
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if (!d) {
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return fail("Unable to find an X display. "
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"Ensure you have permission to connect to the display.");
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}
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if (root)
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userid = RootWindow(d, DefaultScreen(d));
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if (userid == None) {
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i = XGrabPointer(d, RootWindow(d, DefaultScreen(d)),
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False, ButtonPressMask,
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GrabModeAsync, GrabModeAsync,
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None, XCreateFontCursor(d, XC_crosshair),
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CurrentTime);
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if (i != GrabSuccess)
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return fail("Unable to grab the pointer device");
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while (1) {
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XEvent ev;
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XNextEvent(d, &ev);
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if (ev.type == ButtonPress) {
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XUngrabPointer(d, CurrentTime);
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userid = ev.xbutton.subwindow;
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break;
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}
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}
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}
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id = find_client(d, userid);
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if (id == None)
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return fail("Unable to find window with the requested ID");
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show_properties(d, id);
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XCloseDisplay(d);
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return 0;
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}
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