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