#define POINTER_EVENT 5
#define CLIENT_CUT_TEXT 6
-#define RFB_BUF_SIZE 2048
+#define RFB_BUF_SIZE 64
struct pixel_format {
uint8_t bpp;
char text[];
};
+struct update_header {
+ uint8_t msgtype;
+ uint8_t padding;
+ uint16_t nrects;
+ uint16_t xpos;
+ uint16_t ypos;
+ uint16_t width;
+ uint16_t height;
+ int32_t enctype;
+};
+
struct rfb_state {
enum {
ST_BEGIN,
int writepos;
char next_update_incremental;
+ char update_requested;
+
struct fb_update_req client_interest_area;
- int needs_updated;
+ enum {
+ SST_IDLE,
+ SST_NEEDS_UPDATE,
+ SST_SENDING
+ } send_state;
+
+ uint32_t update_pos;
+ uint32_t frame_bytes;
};
static struct server_init_message server_info;
static void init_server_info() {
- server_info.name_length = 8;
+ server_info.name_length = htonl(8);
memcpy(server_info.name_string, "NetWatch", 8);
}
static void update_server_info() {
if (fb != NULL) {
- server_info.fb_width = fb->curmode.xres;
- server_info.fb_height = fb->curmode.yres;
+ outputf("RFB: setting fmt %d", fb->curmode.format);
+ server_info.fb_width = htons(fb->curmode.xres);
+ server_info.fb_height = htons(fb->curmode.yres);
switch (fb->curmode.format) {
case FB_RGB888:
server_info.fmt.bpp = 32;
server_info.fmt.depth = 24;
server_info.fmt.big_endian = 0;
server_info.fmt.true_color = 1;
- server_info.fmt.red_max = 255;
- server_info.fmt.green_max = 255;
- server_info.fmt.blue_max = 255;
+ server_info.fmt.red_max = htons(255);
+ server_info.fmt.green_max = htons(255);
+ server_info.fmt.blue_max = htons(255);
server_info.fmt.red_shift = 0;
server_info.fmt.green_shift = 8;
server_info.fmt.blue_shift = 16;
outputf("RFB: unknown fb fmt %d", fb->curmode.format);
break;
}
+ } else {
+ outputf("RFB: fb null");
+ }
+}
+
+static void send_fsm(struct tcp_pcb *pcb, struct rfb_state *state) {
+ struct update_header hdr;
+ int left, sndlength;
+ err_t err;
+
+ switch (state->send_state) {
+ case SST_IDLE:
+ /* Nothing to do */
+ if (state->update_requested) {
+ outputf("RFB send: update requested");
+ state->update_requested = 0;
+ state->send_state = SST_NEEDS_UPDATE;
+ } else {
+ break;
+ }
+
+ /* potential FALL THROUGH */
+
+ case SST_NEEDS_UPDATE:
+ outputf("RFB send: sending header");
+ /* Send a header */
+ state->frame_bytes = fb->curmode.xres * fb->curmode.yres * fb->curmode.bytestride;
+ hdr.msgtype = 0;
+ hdr.nrects = htons(1);
+ hdr.xpos = htons(0);
+ hdr.ypos = htons(0);
+ hdr.width = htons(fb->curmode.xres);
+ hdr.height = htons(fb->curmode.yres);
+ hdr.enctype = htonl(0);
+ tcp_write(pcb, &hdr, sizeof(hdr), TCP_WRITE_FLAG_COPY);
+
+ state->update_pos = 0;
+ state->send_state = SST_SENDING;
+
+ /* FALL THROUGH */
+
+ case SST_SENDING:
+ while (1) {
+ unsigned char mbuf[8192 /* XXX magic */];
+
+ left = state->frame_bytes - state->update_pos;
+
+ if (left == 0) {
+ state->send_state = SST_IDLE;
+ break;
+ }
+
+ if (left > 8192)
+ left = 8192;
+
+ memcpy(mbuf, fb->fbaddr + state->update_pos, left); /* It's OK if it becomes smaller later. */
+
+ sndlength = left;
+ do {
+ err = tcp_write(pcb, mbuf, sndlength, TCP_WRITE_FLAG_COPY /* This is my memory on the stack, thank you very much. */);
+ if (err == ERR_MEM) /* Back down until lwip says we've got space. */
+ sndlength /= 2;
+ } while (err == ERR_MEM && sndlength > 1);
+
+ if (err != ERR_OK) {
+ /* We'll just give up for now and come back when we have space later. */
+ //outputf("RFB: send error %d", err);
+ break;
+ }
+
+ state->update_pos += sndlength;
+
+ if (tcp_sndbuf(pcb) == 0) {
+ break;
+ }
+ }
+
+ break;
+ }
+
+ if (tcp_output(pcb) != ERR_OK)
+ {
+ outputf("RFB: tcp_output bailed in send_fsm?");
}
}
+static err_t rfb_sent(void *arg, struct tcp_pcb *pcb, uint16_t len) {
+ struct rfb_state *state = arg;
+ send_fsm(pcb, state);
+ return ERR_OK;
+}
+
static void close_conn(struct tcp_pcb *pcb, struct rfb_state *state) {
tcp_arg(pcb, NULL);
tcp_sent(pcb, NULL);
};
static enum fsm_result recv_fsm(struct tcp_pcb *pcb, struct rfb_state *state) {
+ int i;
+ int pktsize;
+
+ outputf("RFB FSM: st %d rp %d wp %d", state->state, state->readpos,
+ state->writepos);
switch(state->state) {
case ST_BEGIN:
state->readpos += 12;
state->state = ST_CLIENTINIT;
- /* We support one security type, currently "none". */
+ /* We support one security type, currently "none".
+ * Send that and SecurityResult. */
if (state->version >= 7) {
- tcp_write(pcb, "\x01\x01", 2, 0);
+ tcp_write(pcb, "\x01\x01\x00\x00\x00\x00", 6, 0);
} else {
- tcp_write(pcb, "\x01", 1, 0);
+ tcp_write(pcb, "\x01\x00\x00\x00\x00", 5, 0);
}
- /* ... and go right ahead and send SecurityResult message. */
- tcp_write(pcb, "\x00\x00\x00\x01", 4, 0);
tcp_output(pcb);
return OK;
case ST_CLIENTINIT:
- if (state->writepos < 1) return NEEDMORE;
- state->readpos += 1;
+ if (state->version >= 7) {
+ /* Ignore the security type and ClientInit */
+ if (state->writepos < 2) return NEEDMORE;
+ state->readpos += 2;
+ } else {
+ /* Just ClientInit */
+ if (state->writepos < 1) return NEEDMORE;
+ state->readpos += 1;
+ }
+
state->state = ST_MAIN;
- tcp_write(pcb, &server_info, sizeof(server_info), 0);
+ outputf("RFB: Sending server info", state->version);
+ tcp_write(pcb, &server_info, sizeof(server_info), TCP_WRITE_FLAG_COPY);
tcp_output(pcb);
return OK;
case ST_MAIN:
if (state->writepos < 1) return NEEDMORE;
+ outputf("RFB: cmd %d", state->data[0]);
switch (state->data[0]) {
case SET_PIXEL_FORMAT:
/* SetPixelFormat */
if (state->writepos < (sizeof(struct pixel_format) + 4))
return NEEDMORE;
+ outputf("RFB: SetPixelFormat");
/*
struct pixel_format * new_fmt =
(struct pixel_format *)(&state->data[4]);
struct set_encs_req * req = (struct set_encs_req *)state->data;
- if (state->writepos < (sizeof(struct set_encs_req)
- + 4 * req->num))
- return NEEDMORE;
+ pktsize = sizeof(struct set_encs_req) + (4 * ntohs(req->num));
- /* XXX ... */
+ outputf("RFB: SetEncodings [%d]", ntohs(req->num));
+ if (state->writepos < pktsize) return NEEDMORE;
+
+ for (i = 0; i < ntohs(req->num); i++) {
+ outputf("RFB: Encoding: %d", ntohl(req->encodings[i]));
+ /* XXX ... */
+
+ }
- state->readpos += (4 * req->num) + sizeof(struct set_encs_req);
+ state->readpos += pktsize;
return OK;
case FB_UPDATE_REQUEST:
if (state->writepos < sizeof(struct fb_update_req))
return NEEDMORE;
+ outputf("RFB: UpdateRequest");
- state->needs_updated = 1;
+ state->update_requested = 1;
memcpy(&state->client_interest_area, state->data,
sizeof(struct fb_update_req));
case KEY_EVENT:
if (state->writepos < sizeof(struct key_event_pkt))
return NEEDMORE;
+ outputf("RFB: Key");
/* XXX stub */
case POINTER_EVENT:
if (state->writepos < sizeof(struct pointer_event_pkt))
return NEEDMORE;
+ outputf("RFB: Pointer");
/* XXX stub */
case CLIENT_CUT_TEXT:
if (state->writepos < sizeof(struct text_event_pkt))
return NEEDMORE;
+ outputf("RFB: Cut Text");
struct text_event_pkt * pkt =
(struct text_event_pkt *)state->data;
outputf("RFB: Processing %d", p->tot_len);
pbuf_copy_partial(p, state->data + state->writepos, p->tot_len, 0);
+ state->writepos += p->tot_len;
+
tcp_recved(pcb, p->tot_len);
pbuf_free(p);
while (1) {
switch (recv_fsm(pcb, state)) {
case NEEDMORE:
+ outputf("RFB FSM: blocking");
/* Need more data */
return ERR_OK;
case OK:
+ outputf("RFB FSM: ok");
+
+ /* Kick off a send. */
+ if (state->send_state == SST_IDLE
+ && state->update_requested) {
+ send_fsm(pcb, state);
+ }
+
if (state->readpos == state->writepos) {
state->readpos = 0;
state->writepos = 0;
state = (struct rfb_state *)mem_malloc(sizeof(struct rfb_state));
+ state->state = ST_BEGIN;
+ state->readpos = 0;
+ state->writepos = 0;
+ state->update_requested = 0;
+ state->send_state = SST_IDLE;
+
/* XXX: update_server_info() should be called from the 64ms timer, and deal
* with screen resizes appropriately. */
update_server_info();
tcp_arg(pcb, state);
tcp_recv(pcb, rfb_recv);
+ tcp_sent(pcb, rfb_sent);
/*
tcp_err(pcb, rfb_err);
tcp_poll(pcb, rfb_poll, 2);
git.joshuawise.com / netwatch.git / blobdiff