--- /dev/null
+/*
+ * Copyright (C) 2013 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define _GNU_SOURCE
+
+
+#include <string.h>
+
+#include <talloc/talloc.h>
+#include <types/types.h>
+#include <log/log.h>
+#include <util/util.h>
+
+#include "config.h"
+#include "nc-cui.h"
+#include "nc-sysinfo.h"
+
+struct sysinfo_screen {
+ struct nc_scr scr;
+ struct cui *cui;
+ char **lines;
+ int n_lines;
+ int n_alloc_lines;
+ int scroll_y;
+ void (*on_exit)(struct cui *);
+};
+
+static struct sysinfo_screen *sysinfo_screen_from_scr(struct nc_scr *scr)
+{
+ struct sysinfo_screen *sysinfo_screen;
+
+ assert(scr->sig == pb_sysinfo_screen_sig);
+ sysinfo_screen = (struct sysinfo_screen *)
+ ((char *)scr - (size_t)&((struct sysinfo_screen *)0)->scr);
+ assert(sysinfo_screen->scr.sig == pb_sysinfo_screen_sig);
+ return sysinfo_screen;
+}
+
+static void sysinfo_screen_draw(struct sysinfo_screen *screen)
+{
+ int max_y, i;
+
+ max_y = getmaxy(screen->scr.sub_ncw);
+
+ max_y = min(max_y, screen->scroll_y + screen->n_lines);
+
+ for (i = screen->scroll_y; i < max_y; i++)
+ mvwaddstr(screen->scr.sub_ncw, i, 1, screen->lines[i]);
+
+ wrefresh(screen->scr.sub_ncw);
+}
+
+static void sysinfo_screen_scroll(struct sysinfo_screen *screen, int key)
+{
+ int win_lines = getmaxy(screen->scr.sub_ncw);
+ int delta;
+
+ if (key == KEY_UP)
+ delta = -1;
+ else if (key == KEY_DOWN)
+ delta = 1;
+ else
+ return;
+
+ if (screen->scroll_y + delta < 0)
+ return;
+ if (screen->scroll_y + delta + win_lines > screen->n_lines - 1)
+ return;
+
+ screen->scroll_y += delta;
+ wscrl(screen->scr.sub_ncw, delta);
+
+ if (delta > 0) {
+ mvwaddstr(screen->scr.sub_ncw, win_lines - 1, 1,
+ screen->lines[screen->scroll_y+win_lines-1]);
+ } else if (delta < 0) {
+ mvwaddstr(screen->scr.sub_ncw, 0, 1,
+ screen->lines[screen->scroll_y]);
+ }
+
+ wrefresh(screen->scr.sub_ncw);
+}
+
+static void sysinfo_clear(struct sysinfo_screen *screen)
+{
+ talloc_free(screen->lines);
+ screen->n_lines = 0;
+ screen->n_alloc_lines = 16;
+ screen->lines = talloc_array(screen, char *, screen->n_alloc_lines);
+}
+
+static __attribute__((format(printf, 2, 3))) void sysinfo_screen_append_line(
+ struct sysinfo_screen *screen, const char *fmt, ...)
+{
+ char *line;
+ va_list ap;
+
+ if (fmt) {
+ va_start(ap, fmt);
+ line = talloc_vasprintf(screen->lines, fmt, ap);
+ va_end(ap);
+ } else {
+ line = "";
+ }
+
+ if (screen->n_lines == screen->n_alloc_lines) {
+ screen->n_alloc_lines *= 2;
+ screen->lines = talloc_realloc(screen, screen->lines,
+ char *, screen->n_alloc_lines);
+ }
+
+ screen->lines[screen->n_lines] = line;
+ screen->n_lines++;
+}
+
+static void mac_str(struct interface_info *info, char *buf, unsigned int buflen)
+{
+ unsigned int i;
+ char *pos;
+
+ assert(buflen > sizeof("unknown"));
+
+ if (!info->hwaddr_size || info->hwaddr_size * 3 + 1 > buflen) {
+ strcpy(buf, "unknown");
+ return;
+ }
+
+ pos = buf;
+
+ for (i = 0; i < info->hwaddr_size; i++) {
+ snprintf(pos, 4, "%02x:", info->hwaddr[i]);
+ pos += 3;
+ }
+
+ *(pos - 1) = '\0';
+
+ return;
+}
+
+static void sysinfo_screen_populate(struct sysinfo_screen *screen,
+ const struct system_info *sysinfo)
+{
+ unsigned int i;
+
+ sysinfo_clear(screen);
+
+#define line(...) sysinfo_screen_append_line(screen, __VA_ARGS__)
+ if (!sysinfo) {
+ line("Waiting for system information...");
+ return;
+ }
+
+ line("%-12s %s", "System type:", sysinfo->type ?: "");
+ line("%-12s %s", "System id:", sysinfo->identifier ?: "");
+
+ line(NULL);
+ if (sysinfo->n_interfaces)
+ line("Network interfaces");
+
+ for (i = 0; i < sysinfo->n_interfaces; i++) {
+ struct interface_info *info = sysinfo->interfaces[i];
+ char macbuf[32];
+
+ mac_str(info, macbuf, sizeof(macbuf));
+
+ line("%s:", info->name);
+ line(" MAC: %s", macbuf);
+ line(NULL);
+ }
+
+#undef line
+}
+
+static void sysinfo_screen_process_key(struct nc_scr *scr, int key)
+{
+ struct sysinfo_screen *screen = sysinfo_screen_from_scr(scr);
+
+ switch (key) {
+ case 'x':
+ screen->on_exit(screen->cui);
+ break;
+ case KEY_DOWN:
+ case KEY_UP:
+ sysinfo_screen_scroll(screen, key);
+ break;
+ default:
+ break;
+ }
+}
+
+static void sysinfo_screen_resize(struct nc_scr *scr)
+{
+ struct sysinfo_screen *screen = sysinfo_screen_from_scr(scr);
+ sysinfo_screen_draw(screen);
+}
+
+struct nc_scr *sysinfo_screen_scr(struct sysinfo_screen *screen)
+{
+ return &screen->scr;
+}
+
+void sysinfo_screen_update(struct sysinfo_screen *screen,
+ const struct system_info *sysinfo)
+{
+ sysinfo_screen_populate(screen, sysinfo);
+ sysinfo_screen_draw(screen);
+}
+
+struct sysinfo_screen *sysinfo_screen_init(struct cui *cui,
+ const struct system_info *sysinfo,
+ void (*on_exit)(struct cui *))
+{
+ struct sysinfo_screen *screen;
+
+ screen = talloc_zero(cui, struct sysinfo_screen);
+ nc_scr_init(&screen->scr, pb_sysinfo_screen_sig, 0,
+ cui, sysinfo_screen_process_key,
+ NULL, NULL, sysinfo_screen_resize);
+
+ screen->cui = cui;
+ screen->on_exit = on_exit;
+
+ screen->scr.frame.ltitle = talloc_strdup(screen,
+ "Petitboot System Information");
+ screen->scr.frame.rtitle = NULL;
+ screen->scr.frame.help = talloc_strdup(screen, "x=exit");
+ nc_scr_frame_draw(&screen->scr);
+
+ sysinfo_screen_populate(screen, sysinfo);
+ wrefresh(screen->scr.main_ncw);
+ scrollok(screen->scr.sub_ncw, true);
+ sysinfo_screen_draw(screen);
+
+ return screen;
+}
projects / petitboot / commitdiff