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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <gtk/gtk.h>
#include <vte/vte.h>
#include "qemu-gtk.h"
#include "tcp.h"
/* ----------------------------------------------------------------- */
static void show_error(struct qemu_window *win, char *cmd, char *reply)
{
/* FIXME: show error dialog */
fprintf(stderr, "ERROR: %s: %s\n", cmd, reply);
}
static int monitor_parse(struct qemu_window *win, char *buf, int len)
{
char *reply, *prompt, *cmd;
int off;
/* handle vnc password change */
if (win->vnc_send_password && win->mrun &&
!strcmp(win->mrun->cmd, "change vnc password") &&
strstr(buf, "Password: "))
{
char buf[64];
int len;
if (debug)
fprintf(stderr, "%s: password prompt\n", __FUNCTION__);
len = snprintf(buf, sizeof(buf), "%s\n", win->vnc_password);
write(win->monitor.handle, buf, len);
win->vnc_send_password = 0;
return 0;
}
/* parse buffer */
prompt = strstr(buf, "(qemu) ");
if (NULL == prompt) {
return 0;
}
off = prompt - buf;
if (prompt > buf+1 && prompt[-2] == '\r' && prompt[-1] == '\n')
prompt -= 2;
*prompt = 0;
if (!win->mrun) {
if (debug)
fprintf(stderr, "%s: no cmd in flight\n", __FUNCTION__);
goto out;
}
cmd = win->mrun->cmd;
reply = strstr(buf, "\r\n");
if (!reply) {
if (debug)
fprintf(stderr, "%s: no reply for \"%s\"\n", __FUNCTION__, cmd);
goto out;
}
reply += 2;
if (debug)
fprintf(stderr, "%s: \"%s\" -> [%s]\n", __FUNCTION__, cmd, reply);
/* parse reply */
if (0 == strcmp(cmd, "info version")) {
snprintf(win->version, sizeof(win->version), "%s", reply);
update_status(win);
} else if (0 == strcmp(cmd, "info name")) {
snprintf(win->name, sizeof(win->name), "%s", reply);
update_status(win);
} else if (0 == strcmp(cmd, "info vnc")) {
if (1 == sscanf(reply, "VNC server active on: %127[^\r\n]",
win->vnc_display) &&
strstr(reply, "No client connected")) {
if (strstr(win->vnc_display, ",password")) {
win->vnc_password = malloc(32);
#if 1
/* FIXME: do something less predictable */
srand(time(NULL)+getpid());
snprintf(win->vnc_password, 32, "%x", rand() & 0xfffffff);
#endif
win->vnc_send_password = 1;
monitor_append(win, "change vnc password");
} else {
vnc_connect(win);
}
}
} else if (0 == strcmp(cmd, "change vnc password")) {
vnc_connect(win);
} else if (0 == strcmp(cmd, "info block")) {
devices_parse_info_block(win, reply);
} else if (0 == strncmp(cmd, "eject ", 6) ||
0 == strncmp(cmd, "change ", 7)) {
show_error(win, cmd, reply);
}
out:
return off + 7;
}
/* ----------------------------------------------------------------- */
static void monitor_next(struct qemu_window *win)
{
char buf[256];
int len;
if (win->mrun)
free(win->mrun);
win->mrun = win->mqueue;
if (!win->mrun)
return;
win->mqueue = win->mrun->next;
len = snprintf(buf, sizeof(buf), "%s\n", win->mrun->cmd);
write(win->monitor.handle, buf, len);
}
void monitor_append(struct qemu_window *win, char *cmd)
{
struct qemu_mq *mq;
int try_send = 0;
if (win->mqueue) {
for (mq = win->mqueue; mq->next; mq = mq->next)
;
mq->next = malloc(sizeof(*mq));
mq = mq->next;
if (debug)
fprintf(stderr, "%s: tail: %s\n", __FUNCTION__, cmd);
} else {
win->mqueue = malloc(sizeof(*mq));
mq = win->mqueue;
if (!win->mrun && !win->mused && win->msize)
try_send = 1;
if (debug)
fprintf(stderr, "%s: %s: %s\n", __FUNCTION__,
try_send ? "send" : "head", cmd);
}
mq->next = NULL;
snprintf(mq->cmd, sizeof(mq->cmd), "%s", cmd);
if (try_send)
monitor_next(win);
}
static gboolean monitor_watch(GIOChannel *source, GIOCondition condition,
gpointer userdata)
{
struct qemu_window *win = userdata;
int rc;
if (win->mused == win->msize) {
if (!win->msize)
win->msize = 4;
win->msize *= 2;
win->mbuf = realloc(win->mbuf, win->msize +1);
}
rc = read(win->monitor.handle, win->mbuf + win->mused, win->msize - win->mused);
switch(rc) {
case -1:
if (EINTR == errno)
break;
perror("monitor: read");
goto close;
case 0:
fprintf(stderr, "monitor: EOF\n");
goto close;
default:
if (win->monitor.vte)
vte_terminal_feed(VTE_TERMINAL(win->monitor.vte), win->mbuf + win->mused, rc);
win->mused += rc;
win->mbuf[win->mused] = 0;
rc = monitor_parse(win, win->mbuf, win->mused);
if (rc) {
if (rc < win->mused)
memmove(win->mbuf, win->mbuf + rc, win->mused - rc);
win->mused -= rc;
}
break;
}
if (0 == win->mused)
monitor_next(win);
return TRUE;
close:
if (win->monitor.vte)
vte_terminal_feed(VTE_TERMINAL(win->monitor.vte), "\r\n=== CLOSED ===", 16);
close(win->monitor.handle);
win->monitor.handle = -1;
if (win->quit_on_shutdown)
gtk_widget_destroy(win->toplevel);
else
update_status(win);
return FALSE;
}
/* ----------------------------------------------------------------- */
int monitor_connect(struct qemu_window *win, char *dest)
{
int fd;
fd = conn_init(&win->monitor, "monitor", dest);
if (-1 == fd)
return -1;
win->monitor.ch = g_io_channel_unix_new(fd);
win->monitor.id = g_io_add_watch(win->monitor.ch, G_IO_IN, monitor_watch, win);
monitor_append(win, "info version");
monitor_append(win, "info name");
monitor_append(win, "info vnc");
monitor_append(win, "info block");
return fd;
}
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