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/*
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* QEMU VNC display driver
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*
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* Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
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* Copyright (C) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h" |
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#include "console.h" |
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#include "sysemu.h" |
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#include "qemu_socket.h" |
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#include "qemu-timer.h" |
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#include "audio/audio.h" |
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#include <zlib.h> |
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#define VNC_REFRESH_INTERVAL (1000 / 30) |
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#include "vnc.h" |
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#include "vnc_keysym.h" |
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#include "keymaps.c" |
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#include "d3des.h" |
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#ifdef CONFIG_VNC_TLS
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#include <gnutls/gnutls.h> |
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#include <gnutls/x509.h> |
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#endif /* CONFIG_VNC_TLS */ |
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// #define _VNC_DEBUG 1
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#ifdef _VNC_DEBUG
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#define VNC_DEBUG(fmt, ...) do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
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#if defined(CONFIG_VNC_TLS) && _VNC_DEBUG >= 2 |
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/* Very verbose, so only enabled for _VNC_DEBUG >= 2 */
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static void vnc_debug_gnutls_log(int level, const char* str) { |
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VNC_DEBUG("%d %s", level, str);
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} |
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#endif /* CONFIG_VNC_TLS && _VNC_DEBUG */ |
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#else
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#define VNC_DEBUG(fmt, ...) do { } while (0) |
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#endif
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#define count_bits(c, v) { \
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for (c = 0; v; v >>= 1) \ |
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{ \ |
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c += v & 1; \
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} \ |
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} |
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typedef struct Buffer |
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{ |
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size_t capacity; |
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size_t offset; |
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uint8_t *buffer; |
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} Buffer; |
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typedef struct VncState VncState; |
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typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len); |
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typedef void VncWritePixels(VncState *vs, void *data, int size); |
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typedef void VncSendHextileTile(VncState *vs, |
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int x, int y, int w, int h, |
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void *last_bg,
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void *last_fg,
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int *has_bg, int *has_fg); |
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#define VNC_MAX_WIDTH 2048 |
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#define VNC_MAX_HEIGHT 2048 |
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#define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * 32)) |
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#define VNC_AUTH_CHALLENGE_SIZE 16 |
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struct VncState
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{ |
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QEMUTimer *timer; |
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int lsock;
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int csock;
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DisplayState *ds; |
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int need_update;
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uint32_t dirty_row[VNC_MAX_HEIGHT][VNC_DIRTY_WORDS]; |
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char *old_data;
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uint32_t features; |
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int absolute;
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int last_x;
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int last_y;
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uint32_t vnc_encoding; |
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uint8_t tight_quality; |
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uint8_t tight_compression; |
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int major;
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int minor;
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char *display;
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char *password;
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int auth;
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#ifdef CONFIG_VNC_TLS
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int subauth;
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int x509verify;
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char *x509cacert;
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char *x509cacrl;
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char *x509cert;
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char *x509key;
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#endif
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char challenge[VNC_AUTH_CHALLENGE_SIZE];
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#ifdef CONFIG_VNC_TLS
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int wiremode;
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gnutls_session_t tls_session; |
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#endif
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Buffer output; |
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Buffer input; |
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kbd_layout_t *kbd_layout; |
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/* current output mode information */
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VncWritePixels *write_pixels; |
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VncSendHextileTile *send_hextile_tile; |
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DisplaySurface clientds, serverds; |
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CaptureVoiceOut *audio_cap; |
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struct audsettings as;
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VncReadEvent *read_handler; |
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size_t read_handler_expect; |
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/* input */
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uint8_t modifiers_state[256];
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Buffer zlib; |
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Buffer zlib_tmp; |
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z_stream zlib_stream[4];
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}; |
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static VncState *vnc_state; /* needed for info vnc */ |
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static DisplayChangeListener *dcl;
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void do_info_vnc(void) |
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{ |
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if (vnc_state == NULL || vnc_state->display == NULL) |
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term_printf("VNC server disabled\n");
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else {
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term_printf("VNC server active on: ");
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term_print_filename(vnc_state->display); |
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term_printf("\n");
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if (vnc_state->csock == -1) |
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term_printf("No client connected\n");
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else
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term_printf("Client connected\n");
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} |
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} |
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static inline uint32_t vnc_has_feature(VncState *vs, int feature) { |
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return (vs->features & (1 << feature)); |
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} |
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/* TODO
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1) Get the queue working for IO.
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2) there is some weirdness when using the -S option (the screen is grey
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and not totally invalidated
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3) resolutions > 1024
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*/
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static void vnc_write(VncState *vs, const void *data, size_t len); |
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static void vnc_write_u32(VncState *vs, uint32_t value); |
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static void vnc_write_s32(VncState *vs, int32_t value); |
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static void vnc_write_u16(VncState *vs, uint16_t value); |
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static void vnc_write_u8(VncState *vs, uint8_t value); |
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static void vnc_flush(VncState *vs); |
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static void vnc_update_client(void *opaque); |
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static void vnc_client_read(void *opaque); |
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static void vnc_colordepth(DisplayState *ds); |
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static inline void vnc_set_bit(uint32_t *d, int k) |
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{ |
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d[k >> 5] |= 1 << (k & 0x1f); |
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} |
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static inline void vnc_clear_bit(uint32_t *d, int k) |
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{ |
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d[k >> 5] &= ~(1 << (k & 0x1f)); |
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} |
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static inline void vnc_set_bits(uint32_t *d, int n, int nb_words) |
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{ |
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int j;
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j = 0;
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while (n >= 32) { |
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d[j++] = -1;
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n -= 32;
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} |
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if (n > 0) |
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d[j++] = (1 << n) - 1; |
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while (j < nb_words)
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d[j++] = 0;
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} |
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static inline int vnc_get_bit(const uint32_t *d, int k) |
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{ |
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return (d[k >> 5] >> (k & 0x1f)) & 1; |
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} |
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static inline int vnc_and_bits(const uint32_t *d1, const uint32_t *d2, |
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int nb_words)
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{ |
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int i;
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for(i = 0; i < nb_words; i++) { |
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if ((d1[i] & d2[i]) != 0) |
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return 1; |
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} |
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return 0; |
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} |
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static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) |
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{ |
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VncState *vs = ds->opaque; |
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int i;
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h += y; |
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/* round x down to ensure the loop only spans one 16-pixel block per,
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iteration. otherwise, if (x % 16) != 0, the last iteration may span
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two 16-pixel blocks but we only mark the first as dirty
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*/
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w += (x % 16);
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x -= (x % 16);
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x = MIN(x, vs->serverds.width); |
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y = MIN(y, vs->serverds.height); |
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w = MIN(x + w, vs->serverds.width) - x; |
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h = MIN(h, vs->serverds.height); |
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for (; y < h; y++)
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for (i = 0; i < w; i += 16) |
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vnc_set_bit(vs->dirty_row[y], (x + i) / 16);
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} |
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static void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, |
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int32_t encoding) |
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{ |
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vnc_write_u16(vs, x); |
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vnc_write_u16(vs, y); |
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vnc_write_u16(vs, w); |
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vnc_write_u16(vs, h); |
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vnc_write_s32(vs, encoding); |
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} |
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static void buffer_reserve(Buffer *buffer, size_t len) |
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{ |
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if ((buffer->capacity - buffer->offset) < len) {
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buffer->capacity += (len + 1024);
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buffer->buffer = qemu_realloc(buffer->buffer, buffer->capacity); |
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if (buffer->buffer == NULL) { |
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fprintf(stderr, "vnc: out of memory\n");
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exit(1);
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} |
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} |
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} |
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static int buffer_empty(Buffer *buffer) |
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{ |
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return buffer->offset == 0; |
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} |
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static uint8_t *buffer_end(Buffer *buffer)
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{ |
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return buffer->buffer + buffer->offset;
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} |
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static void buffer_reset(Buffer *buffer) |
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{ |
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buffer->offset = 0;
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} |
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static void buffer_append(Buffer *buffer, const void *data, size_t len) |
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{ |
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memcpy(buffer->buffer + buffer->offset, data, len); |
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buffer->offset += len; |
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} |
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static void vnc_dpy_resize(DisplayState *ds) |
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{ |
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int size_changed;
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VncState *vs = ds->opaque; |
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vs->old_data = qemu_realloc(vs->old_data, ds_get_linesize(ds) * ds_get_height(ds)); |
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if (vs->old_data == NULL) { |
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fprintf(stderr, "vnc: memory allocation failed\n");
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exit(1);
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} |
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if (ds_get_bytes_per_pixel(ds) != vs->serverds.pf.bytes_per_pixel)
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console_color_init(ds); |
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vnc_colordepth(ds); |
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size_changed = ds_get_width(ds) != vs->serverds.width || |
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ds_get_height(ds) != vs->serverds.height; |
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vs->serverds = *(ds->surface); |
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if (size_changed) {
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if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { |
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vnc_write_u8(vs, 0); /* msg id */ |
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vnc_write_u8(vs, 0);
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vnc_write_u16(vs, 1); /* number of rects */ |
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vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds), |
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VNC_ENCODING_DESKTOPRESIZE); |
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vnc_flush(vs); |
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} |
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} |
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memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row)); |
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memset(vs->old_data, 42, ds_get_linesize(vs->ds) * ds_get_height(vs->ds));
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} |
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/* fastest code */
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static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size) |
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{ |
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vnc_write(vs, pixels, size); |
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} |
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/* slowest but generic code. */
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static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v) |
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{ |
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uint8_t r, g, b; |
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r = ((((v & vs->serverds.pf.rmask) >> vs->serverds.pf.rshift) << vs->clientds.pf.rbits) >> |
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vs->serverds.pf.rbits); |
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g = ((((v & vs->serverds.pf.gmask) >> vs->serverds.pf.gshift) << vs->clientds.pf.gbits) >> |
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vs->serverds.pf.gbits); |
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b = ((((v & vs->serverds.pf.bmask) >> vs->serverds.pf.bshift) << vs->clientds.pf.bbits) >> |
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vs->serverds.pf.bbits); |
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v = (r << vs->clientds.pf.rshift) | |
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(g << vs->clientds.pf.gshift) | |
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(b << vs->clientds.pf.bshift); |
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switch(vs->clientds.pf.bytes_per_pixel) {
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case 1: |
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buf[0] = v;
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break;
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case 2: |
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if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
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buf[0] = v >> 8; |
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buf[1] = v;
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} else {
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buf[1] = v >> 8; |
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buf[0] = v;
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} |
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break;
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default:
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case 4: |
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if (vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) {
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buf[0] = v >> 24; |
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buf[1] = v >> 16; |
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buf[2] = v >> 8; |
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buf[3] = v;
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} else {
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buf[3] = v >> 24; |
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buf[2] = v >> 16; |
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buf[1] = v >> 8; |
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buf[0] = v;
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} |
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break;
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} |
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} |
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static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size) |
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{ |
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uint8_t buf[4];
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if (vs->serverds.pf.bytes_per_pixel == 4) { |
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uint32_t *pixels = pixels1; |
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int n, i;
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n = size >> 2;
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for(i = 0; i < n; i++) { |
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vnc_convert_pixel(vs, buf, pixels[i]); |
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vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
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} |
399 |
} else if (vs->serverds.pf.bytes_per_pixel == 2) { |
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uint16_t *pixels = pixels1; |
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int n, i;
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n = size >> 1;
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for(i = 0; i < n; i++) { |
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vnc_convert_pixel(vs, buf, pixels[i]); |
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vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
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} |
407 |
} else if (vs->serverds.pf.bytes_per_pixel == 1) { |
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uint8_t *pixels = pixels1; |
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int n, i;
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n = size; |
411 |
for(i = 0; i < n; i++) { |
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vnc_convert_pixel(vs, buf, pixels[i]); |
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vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel); |
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} |
415 |
} else {
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fprintf(stderr, "vnc_write_pixels_generic: VncState color depth not supported\n");
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} |
418 |
} |
419 |
|
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static void send_framebuffer_update_raw(VncState *vs, int x, int y, int w, int h) |
421 |
{ |
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int i;
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uint8_t *row; |
424 |
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row = ds_get_data(vs->ds) + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds); |
426 |
for (i = 0; i < h; i++) { |
427 |
vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds)); |
428 |
row += ds_get_linesize(vs->ds); |
429 |
} |
430 |
} |
431 |
|
432 |
static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h) |
433 |
{ |
434 |
ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F); |
435 |
ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F); |
436 |
} |
437 |
|
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#define BPP 8 |
439 |
#include "vnchextile.h" |
440 |
#undef BPP
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441 |
|
442 |
#define BPP 16 |
443 |
#include "vnchextile.h" |
444 |
#undef BPP
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445 |
|
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#define BPP 32 |
447 |
#include "vnchextile.h" |
448 |
#undef BPP
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449 |
|
450 |
#define GENERIC
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#define BPP 8 |
452 |
#include "vnchextile.h" |
453 |
#undef BPP
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454 |
#undef GENERIC
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455 |
|
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#define GENERIC
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#define BPP 16 |
458 |
#include "vnchextile.h" |
459 |
#undef BPP
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460 |
#undef GENERIC
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461 |
|
462 |
#define GENERIC
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463 |
#define BPP 32 |
464 |
#include "vnchextile.h" |
465 |
#undef BPP
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#undef GENERIC
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467 |
|
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static void send_framebuffer_update_hextile(VncState *vs, int x, int y, int w, int h) |
469 |
{ |
470 |
int i, j;
|
471 |
int has_fg, has_bg;
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uint8_t *last_fg, *last_bg; |
473 |
|
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last_fg = (uint8_t *) qemu_malloc(vs->serverds.pf.bytes_per_pixel); |
475 |
last_bg = (uint8_t *) qemu_malloc(vs->serverds.pf.bytes_per_pixel); |
476 |
has_fg = has_bg = 0;
|
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for (j = y; j < (y + h); j += 16) { |
478 |
for (i = x; i < (x + w); i += 16) { |
479 |
vs->send_hextile_tile(vs, i, j, |
480 |
MIN(16, x + w - i), MIN(16, y + h - j), |
481 |
last_bg, last_fg, &has_bg, &has_fg); |
482 |
} |
483 |
} |
484 |
free(last_fg); |
485 |
free(last_bg); |
486 |
|
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} |
488 |
|
489 |
static void vnc_zlib_init(VncState *vs) |
490 |
{ |
491 |
int i;
|
492 |
for (i=0; i<(sizeof(vs->zlib_stream) / sizeof(z_stream)); i++) |
493 |
vs->zlib_stream[i].opaque = NULL;
|
494 |
} |
495 |
|
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static void vnc_zlib_start(VncState *vs) |
497 |
{ |
498 |
buffer_reset(&vs->zlib); |
499 |
|
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// make the output buffer be the zlib buffer, so we can compress it later
|
501 |
vs->zlib_tmp = vs->output; |
502 |
vs->output = vs->zlib; |
503 |
} |
504 |
|
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static int vnc_zlib_stop(VncState *vs, int stream_id) |
506 |
{ |
507 |
z_streamp zstream = &vs->zlib_stream[stream_id]; |
508 |
int previous_out;
|
509 |
|
510 |
// switch back to normal output/zlib buffers
|
511 |
vs->zlib = vs->output; |
512 |
vs->output = vs->zlib_tmp; |
513 |
|
514 |
// compress the zlib buffer
|
515 |
|
516 |
// initialize the stream
|
517 |
// XXX need one stream per session
|
518 |
if (zstream->opaque != vs) {
|
519 |
int err;
|
520 |
|
521 |
VNC_DEBUG("VNC: initializing zlib stream %d\n", stream_id);
|
522 |
VNC_DEBUG("VNC: opaque = %p | vs = %p\n", zstream->opaque, vs);
|
523 |
zstream->zalloc = Z_NULL; |
524 |
zstream->zfree = Z_NULL; |
525 |
|
526 |
err = deflateInit2(zstream, vs->tight_compression, Z_DEFLATED, MAX_WBITS, |
527 |
MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY); |
528 |
|
529 |
if (err != Z_OK) {
|
530 |
fprintf(stderr, "VNC: error initializing zlib\n");
|
531 |
return -1; |
532 |
} |
533 |
|
534 |
zstream->opaque = vs; |
535 |
} |
536 |
|
537 |
// XXX what to do if tight_compression changed in between?
|
538 |
|
539 |
// reserve memory in output buffer
|
540 |
buffer_reserve(&vs->output, vs->zlib.offset + 64);
|
541 |
|
542 |
// set pointers
|
543 |
zstream->next_in = vs->zlib.buffer; |
544 |
zstream->avail_in = vs->zlib.offset; |
545 |
zstream->next_out = vs->output.buffer + vs->output.offset; |
546 |
zstream->avail_out = vs->output.capacity - vs->output.offset; |
547 |
zstream->data_type = Z_BINARY; |
548 |
previous_out = zstream->total_out; |
549 |
|
550 |
// start encoding
|
551 |
if (deflate(zstream, Z_SYNC_FLUSH) != Z_OK) {
|
552 |
fprintf(stderr, "VNC: error during zlib compression\n");
|
553 |
return -1; |
554 |
} |
555 |
|
556 |
vs->output.offset = vs->output.capacity - zstream->avail_out; |
557 |
return zstream->total_out - previous_out;
|
558 |
} |
559 |
|
560 |
static void send_framebuffer_update_zlib(VncState *vs, int x, int y, int w, int h) |
561 |
{ |
562 |
int old_offset, new_offset, bytes_written;
|
563 |
|
564 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_ZLIB); |
565 |
|
566 |
// remember where we put in the follow-up size
|
567 |
old_offset = vs->output.offset; |
568 |
vnc_write_s32(vs, 0);
|
569 |
|
570 |
// compress the stream
|
571 |
vnc_zlib_start(vs); |
572 |
send_framebuffer_update_raw(vs, x, y, w, h); |
573 |
bytes_written = vnc_zlib_stop(vs, 0);
|
574 |
|
575 |
if (bytes_written == -1) |
576 |
return;
|
577 |
|
578 |
// hack in the size
|
579 |
new_offset = vs->output.offset; |
580 |
vs->output.offset = old_offset; |
581 |
vnc_write_u32(vs, bytes_written); |
582 |
vs->output.offset = new_offset; |
583 |
} |
584 |
|
585 |
static void send_framebuffer_update(VncState *vs, int x, int y, int w, int h) |
586 |
{ |
587 |
switch(vs->vnc_encoding) {
|
588 |
case VNC_ENCODING_ZLIB:
|
589 |
send_framebuffer_update_zlib(vs, x, y, w, h); |
590 |
break;
|
591 |
case VNC_ENCODING_HEXTILE:
|
592 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_HEXTILE); |
593 |
send_framebuffer_update_hextile(vs, x, y, w, h); |
594 |
break;
|
595 |
default:
|
596 |
vnc_framebuffer_update(vs, x, y, w, h, VNC_ENCODING_RAW); |
597 |
send_framebuffer_update_raw(vs, x, y, w, h); |
598 |
break;
|
599 |
} |
600 |
} |
601 |
|
602 |
static void vnc_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h) |
603 |
{ |
604 |
VncState *vs = ds->opaque; |
605 |
|
606 |
vnc_update_client(vs); |
607 |
|
608 |
vnc_write_u8(vs, 0); /* msg id */ |
609 |
vnc_write_u8(vs, 0);
|
610 |
vnc_write_u16(vs, 1); /* number of rects */ |
611 |
vnc_framebuffer_update(vs, dst_x, dst_y, w, h, VNC_ENCODING_COPYRECT); |
612 |
vnc_write_u16(vs, src_x); |
613 |
vnc_write_u16(vs, src_y); |
614 |
vnc_flush(vs); |
615 |
} |
616 |
|
617 |
static int find_dirty_height(VncState *vs, int y, int last_x, int x) |
618 |
{ |
619 |
int h;
|
620 |
|
621 |
for (h = 1; h < (vs->serverds.height - y); h++) { |
622 |
int tmp_x;
|
623 |
if (!vnc_get_bit(vs->dirty_row[y + h], last_x))
|
624 |
break;
|
625 |
for (tmp_x = last_x; tmp_x < x; tmp_x++)
|
626 |
vnc_clear_bit(vs->dirty_row[y + h], tmp_x); |
627 |
} |
628 |
|
629 |
return h;
|
630 |
} |
631 |
|
632 |
static void vnc_update_client(void *opaque) |
633 |
{ |
634 |
VncState *vs = opaque; |
635 |
|
636 |
if (vs->need_update && vs->csock != -1) { |
637 |
int y;
|
638 |
uint8_t *row; |
639 |
char *old_row;
|
640 |
uint32_t width_mask[VNC_DIRTY_WORDS]; |
641 |
int n_rectangles;
|
642 |
int saved_offset;
|
643 |
int has_dirty = 0; |
644 |
|
645 |
vga_hw_update(); |
646 |
|
647 |
vnc_set_bits(width_mask, (ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
|
648 |
|
649 |
/* Walk through the dirty map and eliminate tiles that
|
650 |
really aren't dirty */
|
651 |
row = ds_get_data(vs->ds); |
652 |
old_row = vs->old_data; |
653 |
|
654 |
for (y = 0; y < ds_get_height(vs->ds); y++) { |
655 |
if (vnc_and_bits(vs->dirty_row[y], width_mask, VNC_DIRTY_WORDS)) {
|
656 |
int x;
|
657 |
uint8_t *ptr; |
658 |
char *old_ptr;
|
659 |
|
660 |
ptr = row; |
661 |
old_ptr = (char*)old_row;
|
662 |
|
663 |
for (x = 0; x < ds_get_width(vs->ds); x += 16) { |
664 |
if (memcmp(old_ptr, ptr, 16 * ds_get_bytes_per_pixel(vs->ds)) == 0) { |
665 |
vnc_clear_bit(vs->dirty_row[y], (x / 16));
|
666 |
} else {
|
667 |
has_dirty = 1;
|
668 |
memcpy(old_ptr, ptr, 16 * ds_get_bytes_per_pixel(vs->ds));
|
669 |
} |
670 |
|
671 |
ptr += 16 * ds_get_bytes_per_pixel(vs->ds);
|
672 |
old_ptr += 16 * ds_get_bytes_per_pixel(vs->ds);
|
673 |
} |
674 |
} |
675 |
|
676 |
row += ds_get_linesize(vs->ds); |
677 |
old_row += ds_get_linesize(vs->ds); |
678 |
} |
679 |
|
680 |
if (!has_dirty && !vs->audio_cap) {
|
681 |
qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL); |
682 |
return;
|
683 |
} |
684 |
|
685 |
/* Count rectangles */
|
686 |
n_rectangles = 0;
|
687 |
vnc_write_u8(vs, 0); /* msg id */ |
688 |
vnc_write_u8(vs, 0);
|
689 |
saved_offset = vs->output.offset; |
690 |
vnc_write_u16(vs, 0);
|
691 |
|
692 |
for (y = 0; y < vs->serverds.height; y++) { |
693 |
int x;
|
694 |
int last_x = -1; |
695 |
for (x = 0; x < vs->serverds.width / 16; x++) { |
696 |
if (vnc_get_bit(vs->dirty_row[y], x)) {
|
697 |
if (last_x == -1) { |
698 |
last_x = x; |
699 |
} |
700 |
vnc_clear_bit(vs->dirty_row[y], x); |
701 |
} else {
|
702 |
if (last_x != -1) { |
703 |
int h = find_dirty_height(vs, y, last_x, x);
|
704 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
705 |
n_rectangles++; |
706 |
} |
707 |
last_x = -1;
|
708 |
} |
709 |
} |
710 |
if (last_x != -1) { |
711 |
int h = find_dirty_height(vs, y, last_x, x);
|
712 |
send_framebuffer_update(vs, last_x * 16, y, (x - last_x) * 16, h); |
713 |
n_rectangles++; |
714 |
} |
715 |
} |
716 |
vs->output.buffer[saved_offset] = (n_rectangles >> 8) & 0xFF; |
717 |
vs->output.buffer[saved_offset + 1] = n_rectangles & 0xFF; |
718 |
vnc_flush(vs); |
719 |
|
720 |
} |
721 |
|
722 |
if (vs->csock != -1) { |
723 |
qemu_mod_timer(vs->timer, qemu_get_clock(rt_clock) + VNC_REFRESH_INTERVAL); |
724 |
} |
725 |
|
726 |
} |
727 |
|
728 |
static int vnc_listen_poll(void *opaque) |
729 |
{ |
730 |
VncState *vs = opaque; |
731 |
if (vs->csock == -1) |
732 |
return 1; |
733 |
return 0; |
734 |
} |
735 |
|
736 |
/* audio */
|
737 |
static void audio_capture_notify(void *opaque, audcnotification_e cmd) |
738 |
{ |
739 |
VncState *vs = opaque; |
740 |
|
741 |
switch (cmd) {
|
742 |
case AUD_CNOTIFY_DISABLE:
|
743 |
vnc_write_u8(vs, 255);
|
744 |
vnc_write_u8(vs, 1);
|
745 |
vnc_write_u16(vs, 0);
|
746 |
vnc_flush(vs); |
747 |
break;
|
748 |
|
749 |
case AUD_CNOTIFY_ENABLE:
|
750 |
vnc_write_u8(vs, 255);
|
751 |
vnc_write_u8(vs, 1);
|
752 |
vnc_write_u16(vs, 1);
|
753 |
vnc_flush(vs); |
754 |
break;
|
755 |
} |
756 |
} |
757 |
|
758 |
static void audio_capture_destroy(void *opaque) |
759 |
{ |
760 |
} |
761 |
|
762 |
static void audio_capture(void *opaque, void *buf, int size) |
763 |
{ |
764 |
VncState *vs = opaque; |
765 |
|
766 |
vnc_write_u8(vs, 255);
|
767 |
vnc_write_u8(vs, 1);
|
768 |
vnc_write_u16(vs, 2);
|
769 |
vnc_write_u32(vs, size); |
770 |
vnc_write(vs, buf, size); |
771 |
vnc_flush(vs); |
772 |
} |
773 |
|
774 |
static void audio_add(VncState *vs) |
775 |
{ |
776 |
struct audio_capture_ops ops;
|
777 |
|
778 |
if (vs->audio_cap) {
|
779 |
term_printf ("audio already running\n");
|
780 |
return;
|
781 |
} |
782 |
|
783 |
ops.notify = audio_capture_notify; |
784 |
ops.destroy = audio_capture_destroy; |
785 |
ops.capture = audio_capture; |
786 |
|
787 |
vs->audio_cap = AUD_add_capture(NULL, &vs->as, &ops, vs);
|
788 |
if (!vs->audio_cap) {
|
789 |
term_printf ("Failed to add audio capture\n");
|
790 |
} |
791 |
} |
792 |
|
793 |
static void audio_del(VncState *vs) |
794 |
{ |
795 |
if (vs->audio_cap) {
|
796 |
AUD_del_capture(vs->audio_cap, vs); |
797 |
vs->audio_cap = NULL;
|
798 |
} |
799 |
} |
800 |
|
801 |
static int vnc_client_io_error(VncState *vs, int ret, int last_errno) |
802 |
{ |
803 |
if (ret == 0 || ret == -1) { |
804 |
if (ret == -1) { |
805 |
switch (last_errno) {
|
806 |
case EINTR:
|
807 |
case EAGAIN:
|
808 |
#ifdef _WIN32
|
809 |
case WSAEWOULDBLOCK:
|
810 |
#endif
|
811 |
return 0; |
812 |
default:
|
813 |
break;
|
814 |
} |
815 |
} |
816 |
|
817 |
VNC_DEBUG("Closing down client sock %d %d\n", ret, ret < 0 ? last_errno : 0); |
818 |
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
819 |
closesocket(vs->csock); |
820 |
vs->csock = -1;
|
821 |
dcl->idle = 1;
|
822 |
buffer_reset(&vs->input); |
823 |
buffer_reset(&vs->output); |
824 |
vs->need_update = 0;
|
825 |
#ifdef CONFIG_VNC_TLS
|
826 |
if (vs->tls_session) {
|
827 |
gnutls_deinit(vs->tls_session); |
828 |
vs->tls_session = NULL;
|
829 |
} |
830 |
vs->wiremode = VNC_WIREMODE_CLEAR; |
831 |
#endif /* CONFIG_VNC_TLS */ |
832 |
audio_del(vs); |
833 |
return 0; |
834 |
} |
835 |
return ret;
|
836 |
} |
837 |
|
838 |
static void vnc_client_error(VncState *vs) |
839 |
{ |
840 |
vnc_client_io_error(vs, -1, EINVAL);
|
841 |
} |
842 |
|
843 |
static void vnc_client_write(void *opaque) |
844 |
{ |
845 |
long ret;
|
846 |
VncState *vs = opaque; |
847 |
|
848 |
#ifdef CONFIG_VNC_TLS
|
849 |
if (vs->tls_session) {
|
850 |
ret = gnutls_write(vs->tls_session, vs->output.buffer, vs->output.offset); |
851 |
if (ret < 0) { |
852 |
if (ret == GNUTLS_E_AGAIN)
|
853 |
errno = EAGAIN; |
854 |
else
|
855 |
errno = EIO; |
856 |
ret = -1;
|
857 |
} |
858 |
} else
|
859 |
#endif /* CONFIG_VNC_TLS */ |
860 |
ret = send(vs->csock, vs->output.buffer, vs->output.offset, 0);
|
861 |
ret = vnc_client_io_error(vs, ret, socket_error()); |
862 |
if (!ret)
|
863 |
return;
|
864 |
|
865 |
memmove(vs->output.buffer, vs->output.buffer + ret, (vs->output.offset - ret)); |
866 |
vs->output.offset -= ret; |
867 |
|
868 |
if (vs->output.offset == 0) { |
869 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
870 |
} |
871 |
} |
872 |
|
873 |
static void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting) |
874 |
{ |
875 |
vs->read_handler = func; |
876 |
vs->read_handler_expect = expecting; |
877 |
} |
878 |
|
879 |
static void vnc_client_read(void *opaque) |
880 |
{ |
881 |
VncState *vs = opaque; |
882 |
long ret;
|
883 |
|
884 |
buffer_reserve(&vs->input, 4096);
|
885 |
|
886 |
#ifdef CONFIG_VNC_TLS
|
887 |
if (vs->tls_session) {
|
888 |
ret = gnutls_read(vs->tls_session, buffer_end(&vs->input), 4096);
|
889 |
if (ret < 0) { |
890 |
if (ret == GNUTLS_E_AGAIN)
|
891 |
errno = EAGAIN; |
892 |
else
|
893 |
errno = EIO; |
894 |
ret = -1;
|
895 |
} |
896 |
} else
|
897 |
#endif /* CONFIG_VNC_TLS */ |
898 |
ret = recv(vs->csock, buffer_end(&vs->input), 4096, 0); |
899 |
ret = vnc_client_io_error(vs, ret, socket_error()); |
900 |
if (!ret)
|
901 |
return;
|
902 |
|
903 |
vs->input.offset += ret; |
904 |
|
905 |
while (vs->read_handler && vs->input.offset >= vs->read_handler_expect) {
|
906 |
size_t len = vs->read_handler_expect; |
907 |
int ret;
|
908 |
|
909 |
ret = vs->read_handler(vs, vs->input.buffer, len); |
910 |
if (vs->csock == -1) |
911 |
return;
|
912 |
|
913 |
if (!ret) {
|
914 |
memmove(vs->input.buffer, vs->input.buffer + len, (vs->input.offset - len)); |
915 |
vs->input.offset -= len; |
916 |
} else {
|
917 |
vs->read_handler_expect = ret; |
918 |
} |
919 |
} |
920 |
} |
921 |
|
922 |
static void vnc_write(VncState *vs, const void *data, size_t len) |
923 |
{ |
924 |
buffer_reserve(&vs->output, len); |
925 |
|
926 |
if (buffer_empty(&vs->output)) {
|
927 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
928 |
} |
929 |
|
930 |
buffer_append(&vs->output, data, len); |
931 |
} |
932 |
|
933 |
static void vnc_write_s32(VncState *vs, int32_t value) |
934 |
{ |
935 |
vnc_write_u32(vs, *(uint32_t *)&value); |
936 |
} |
937 |
|
938 |
static void vnc_write_u32(VncState *vs, uint32_t value) |
939 |
{ |
940 |
uint8_t buf[4];
|
941 |
|
942 |
buf[0] = (value >> 24) & 0xFF; |
943 |
buf[1] = (value >> 16) & 0xFF; |
944 |
buf[2] = (value >> 8) & 0xFF; |
945 |
buf[3] = value & 0xFF; |
946 |
|
947 |
vnc_write(vs, buf, 4);
|
948 |
} |
949 |
|
950 |
static void vnc_write_u16(VncState *vs, uint16_t value) |
951 |
{ |
952 |
uint8_t buf[2];
|
953 |
|
954 |
buf[0] = (value >> 8) & 0xFF; |
955 |
buf[1] = value & 0xFF; |
956 |
|
957 |
vnc_write(vs, buf, 2);
|
958 |
} |
959 |
|
960 |
static void vnc_write_u8(VncState *vs, uint8_t value) |
961 |
{ |
962 |
vnc_write(vs, (char *)&value, 1); |
963 |
} |
964 |
|
965 |
static void vnc_flush(VncState *vs) |
966 |
{ |
967 |
if (vs->output.offset)
|
968 |
vnc_client_write(vs); |
969 |
} |
970 |
|
971 |
static uint8_t read_u8(uint8_t *data, size_t offset)
|
972 |
{ |
973 |
return data[offset];
|
974 |
} |
975 |
|
976 |
static uint16_t read_u16(uint8_t *data, size_t offset)
|
977 |
{ |
978 |
return ((data[offset] & 0xFF) << 8) | (data[offset + 1] & 0xFF); |
979 |
} |
980 |
|
981 |
static int32_t read_s32(uint8_t *data, size_t offset)
|
982 |
{ |
983 |
return (int32_t)((data[offset] << 24) | (data[offset + 1] << 16) | |
984 |
(data[offset + 2] << 8) | data[offset + 3]); |
985 |
} |
986 |
|
987 |
static uint32_t read_u32(uint8_t *data, size_t offset)
|
988 |
{ |
989 |
return ((data[offset] << 24) | (data[offset + 1] << 16) | |
990 |
(data[offset + 2] << 8) | data[offset + 3]); |
991 |
} |
992 |
|
993 |
#ifdef CONFIG_VNC_TLS
|
994 |
static ssize_t vnc_tls_push(gnutls_transport_ptr_t transport,
|
995 |
const void *data, |
996 |
size_t len) { |
997 |
struct VncState *vs = (struct VncState *)transport; |
998 |
int ret;
|
999 |
|
1000 |
retry:
|
1001 |
ret = send(vs->csock, data, len, 0);
|
1002 |
if (ret < 0) { |
1003 |
if (errno == EINTR)
|
1004 |
goto retry;
|
1005 |
return -1; |
1006 |
} |
1007 |
return ret;
|
1008 |
} |
1009 |
|
1010 |
|
1011 |
static ssize_t vnc_tls_pull(gnutls_transport_ptr_t transport,
|
1012 |
void *data,
|
1013 |
size_t len) { |
1014 |
struct VncState *vs = (struct VncState *)transport; |
1015 |
int ret;
|
1016 |
|
1017 |
retry:
|
1018 |
ret = recv(vs->csock, data, len, 0);
|
1019 |
if (ret < 0) { |
1020 |
if (errno == EINTR)
|
1021 |
goto retry;
|
1022 |
return -1; |
1023 |
} |
1024 |
return ret;
|
1025 |
} |
1026 |
#endif /* CONFIG_VNC_TLS */ |
1027 |
|
1028 |
static void client_cut_text(VncState *vs, size_t len, uint8_t *text) |
1029 |
{ |
1030 |
} |
1031 |
|
1032 |
static void check_pointer_type_change(VncState *vs, int absolute) |
1033 |
{ |
1034 |
if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE) && vs->absolute != absolute) {
|
1035 |
vnc_write_u8(vs, 0);
|
1036 |
vnc_write_u8(vs, 0);
|
1037 |
vnc_write_u16(vs, 1);
|
1038 |
vnc_framebuffer_update(vs, absolute, 0,
|
1039 |
ds_get_width(vs->ds), ds_get_height(vs->ds), |
1040 |
VNC_ENCODING_POINTER_TYPE_CHANGE); |
1041 |
vnc_flush(vs); |
1042 |
} |
1043 |
vs->absolute = absolute; |
1044 |
} |
1045 |
|
1046 |
static void pointer_event(VncState *vs, int button_mask, int x, int y) |
1047 |
{ |
1048 |
int buttons = 0; |
1049 |
int dz = 0; |
1050 |
|
1051 |
if (button_mask & 0x01) |
1052 |
buttons |= MOUSE_EVENT_LBUTTON; |
1053 |
if (button_mask & 0x02) |
1054 |
buttons |= MOUSE_EVENT_MBUTTON; |
1055 |
if (button_mask & 0x04) |
1056 |
buttons |= MOUSE_EVENT_RBUTTON; |
1057 |
if (button_mask & 0x08) |
1058 |
dz = -1;
|
1059 |
if (button_mask & 0x10) |
1060 |
dz = 1;
|
1061 |
|
1062 |
if (vs->absolute) {
|
1063 |
kbd_mouse_event(x * 0x7FFF / (ds_get_width(vs->ds) - 1), |
1064 |
y * 0x7FFF / (ds_get_height(vs->ds) - 1), |
1065 |
dz, buttons); |
1066 |
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { |
1067 |
x -= 0x7FFF;
|
1068 |
y -= 0x7FFF;
|
1069 |
|
1070 |
kbd_mouse_event(x, y, dz, buttons); |
1071 |
} else {
|
1072 |
if (vs->last_x != -1) |
1073 |
kbd_mouse_event(x - vs->last_x, |
1074 |
y - vs->last_y, |
1075 |
dz, buttons); |
1076 |
vs->last_x = x; |
1077 |
vs->last_y = y; |
1078 |
} |
1079 |
|
1080 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
1081 |
} |
1082 |
|
1083 |
static void reset_keys(VncState *vs) |
1084 |
{ |
1085 |
int i;
|
1086 |
for(i = 0; i < 256; i++) { |
1087 |
if (vs->modifiers_state[i]) {
|
1088 |
if (i & 0x80) |
1089 |
kbd_put_keycode(0xe0);
|
1090 |
kbd_put_keycode(i | 0x80);
|
1091 |
vs->modifiers_state[i] = 0;
|
1092 |
} |
1093 |
} |
1094 |
} |
1095 |
|
1096 |
static void press_key(VncState *vs, int keysym) |
1097 |
{ |
1098 |
kbd_put_keycode(keysym2scancode(vs->kbd_layout, keysym) & 0x7f);
|
1099 |
kbd_put_keycode(keysym2scancode(vs->kbd_layout, keysym) | 0x80);
|
1100 |
} |
1101 |
|
1102 |
static void do_key_event(VncState *vs, int down, int keycode, int sym) |
1103 |
{ |
1104 |
/* QEMU console switch */
|
1105 |
switch(keycode) {
|
1106 |
case 0x2a: /* Left Shift */ |
1107 |
case 0x36: /* Right Shift */ |
1108 |
case 0x1d: /* Left CTRL */ |
1109 |
case 0x9d: /* Right CTRL */ |
1110 |
case 0x38: /* Left ALT */ |
1111 |
case 0xb8: /* Right ALT */ |
1112 |
if (down)
|
1113 |
vs->modifiers_state[keycode] = 1;
|
1114 |
else
|
1115 |
vs->modifiers_state[keycode] = 0;
|
1116 |
break;
|
1117 |
case 0x02 ... 0x0a: /* '1' to '9' keys */ |
1118 |
if (down && vs->modifiers_state[0x1d] && vs->modifiers_state[0x38]) { |
1119 |
/* Reset the modifiers sent to the current console */
|
1120 |
reset_keys(vs); |
1121 |
console_select(keycode - 0x02);
|
1122 |
return;
|
1123 |
} |
1124 |
break;
|
1125 |
case 0x3a: /* CapsLock */ |
1126 |
case 0x45: /* NumLock */ |
1127 |
if (!down)
|
1128 |
vs->modifiers_state[keycode] ^= 1;
|
1129 |
break;
|
1130 |
} |
1131 |
|
1132 |
if (keycode_is_keypad(vs->kbd_layout, keycode)) {
|
1133 |
/* If the numlock state needs to change then simulate an additional
|
1134 |
keypress before sending this one. This will happen if the user
|
1135 |
toggles numlock away from the VNC window.
|
1136 |
*/
|
1137 |
if (keysym_is_numlock(vs->kbd_layout, sym & 0xFFFF)) { |
1138 |
if (!vs->modifiers_state[0x45]) { |
1139 |
vs->modifiers_state[0x45] = 1; |
1140 |
press_key(vs, 0xff7f);
|
1141 |
} |
1142 |
} else {
|
1143 |
if (vs->modifiers_state[0x45]) { |
1144 |
vs->modifiers_state[0x45] = 0; |
1145 |
press_key(vs, 0xff7f);
|
1146 |
} |
1147 |
} |
1148 |
} |
1149 |
|
1150 |
if (is_graphic_console()) {
|
1151 |
if (keycode & 0x80) |
1152 |
kbd_put_keycode(0xe0);
|
1153 |
if (down)
|
1154 |
kbd_put_keycode(keycode & 0x7f);
|
1155 |
else
|
1156 |
kbd_put_keycode(keycode | 0x80);
|
1157 |
} else {
|
1158 |
/* QEMU console emulation */
|
1159 |
if (down) {
|
1160 |
switch (keycode) {
|
1161 |
case 0x2a: /* Left Shift */ |
1162 |
case 0x36: /* Right Shift */ |
1163 |
case 0x1d: /* Left CTRL */ |
1164 |
case 0x9d: /* Right CTRL */ |
1165 |
case 0x38: /* Left ALT */ |
1166 |
case 0xb8: /* Right ALT */ |
1167 |
break;
|
1168 |
case 0xc8: |
1169 |
kbd_put_keysym(QEMU_KEY_UP); |
1170 |
break;
|
1171 |
case 0xd0: |
1172 |
kbd_put_keysym(QEMU_KEY_DOWN); |
1173 |
break;
|
1174 |
case 0xcb: |
1175 |
kbd_put_keysym(QEMU_KEY_LEFT); |
1176 |
break;
|
1177 |
case 0xcd: |
1178 |
kbd_put_keysym(QEMU_KEY_RIGHT); |
1179 |
break;
|
1180 |
case 0xd3: |
1181 |
kbd_put_keysym(QEMU_KEY_DELETE); |
1182 |
break;
|
1183 |
case 0xc7: |
1184 |
kbd_put_keysym(QEMU_KEY_HOME); |
1185 |
break;
|
1186 |
case 0xcf: |
1187 |
kbd_put_keysym(QEMU_KEY_END); |
1188 |
break;
|
1189 |
case 0xc9: |
1190 |
kbd_put_keysym(QEMU_KEY_PAGEUP); |
1191 |
break;
|
1192 |
case 0xd1: |
1193 |
kbd_put_keysym(QEMU_KEY_PAGEDOWN); |
1194 |
break;
|
1195 |
default:
|
1196 |
kbd_put_keysym(sym); |
1197 |
break;
|
1198 |
} |
1199 |
} |
1200 |
} |
1201 |
} |
1202 |
|
1203 |
static void key_event(VncState *vs, int down, uint32_t sym) |
1204 |
{ |
1205 |
int keycode;
|
1206 |
|
1207 |
if (sym >= 'A' && sym <= 'Z' && is_graphic_console()) |
1208 |
sym = sym - 'A' + 'a'; |
1209 |
|
1210 |
keycode = keysym2scancode(vs->kbd_layout, sym & 0xFFFF);
|
1211 |
do_key_event(vs, down, keycode, sym); |
1212 |
} |
1213 |
|
1214 |
static void ext_key_event(VncState *vs, int down, |
1215 |
uint32_t sym, uint16_t keycode) |
1216 |
{ |
1217 |
/* if the user specifies a keyboard layout, always use it */
|
1218 |
if (keyboard_layout)
|
1219 |
key_event(vs, down, sym); |
1220 |
else
|
1221 |
do_key_event(vs, down, keycode, sym); |
1222 |
} |
1223 |
|
1224 |
static void framebuffer_update_request(VncState *vs, int incremental, |
1225 |
int x_position, int y_position, |
1226 |
int w, int h) |
1227 |
{ |
1228 |
if (x_position > ds_get_width(vs->ds))
|
1229 |
x_position = ds_get_width(vs->ds); |
1230 |
if (y_position > ds_get_height(vs->ds))
|
1231 |
y_position = ds_get_height(vs->ds); |
1232 |
if (x_position + w >= ds_get_width(vs->ds))
|
1233 |
w = ds_get_width(vs->ds) - x_position; |
1234 |
if (y_position + h >= ds_get_height(vs->ds))
|
1235 |
h = ds_get_height(vs->ds) - y_position; |
1236 |
|
1237 |
int i;
|
1238 |
vs->need_update = 1;
|
1239 |
if (!incremental) {
|
1240 |
char *old_row = vs->old_data + y_position * ds_get_linesize(vs->ds);
|
1241 |
|
1242 |
for (i = 0; i < h; i++) { |
1243 |
vnc_set_bits(vs->dirty_row[y_position + i], |
1244 |
(ds_get_width(vs->ds) / 16), VNC_DIRTY_WORDS);
|
1245 |
memset(old_row, 42, ds_get_width(vs->ds) * ds_get_bytes_per_pixel(vs->ds));
|
1246 |
old_row += ds_get_linesize(vs->ds); |
1247 |
} |
1248 |
} |
1249 |
} |
1250 |
|
1251 |
static void send_ext_key_event_ack(VncState *vs) |
1252 |
{ |
1253 |
vnc_write_u8(vs, 0);
|
1254 |
vnc_write_u8(vs, 0);
|
1255 |
vnc_write_u16(vs, 1);
|
1256 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1257 |
VNC_ENCODING_EXT_KEY_EVENT); |
1258 |
vnc_flush(vs); |
1259 |
} |
1260 |
|
1261 |
static void send_ext_audio_ack(VncState *vs) |
1262 |
{ |
1263 |
vnc_write_u8(vs, 0);
|
1264 |
vnc_write_u8(vs, 0);
|
1265 |
vnc_write_u16(vs, 1);
|
1266 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(vs->ds), ds_get_height(vs->ds), |
1267 |
VNC_ENCODING_AUDIO); |
1268 |
vnc_flush(vs); |
1269 |
} |
1270 |
|
1271 |
static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) |
1272 |
{ |
1273 |
int i;
|
1274 |
unsigned int enc = 0; |
1275 |
|
1276 |
vnc_zlib_init(vs); |
1277 |
vs->features = 0;
|
1278 |
vs->vnc_encoding = 0;
|
1279 |
vs->tight_compression = 9;
|
1280 |
vs->tight_quality = 9;
|
1281 |
vs->absolute = -1;
|
1282 |
dcl->dpy_copy = NULL;
|
1283 |
|
1284 |
for (i = n_encodings - 1; i >= 0; i--) { |
1285 |
enc = encodings[i]; |
1286 |
switch (enc) {
|
1287 |
case VNC_ENCODING_RAW:
|
1288 |
vs->vnc_encoding = enc; |
1289 |
break;
|
1290 |
case VNC_ENCODING_COPYRECT:
|
1291 |
dcl->dpy_copy = vnc_copy; |
1292 |
break;
|
1293 |
case VNC_ENCODING_HEXTILE:
|
1294 |
vs->features |= VNC_FEATURE_HEXTILE_MASK; |
1295 |
vs->vnc_encoding = enc; |
1296 |
break;
|
1297 |
case VNC_ENCODING_ZLIB:
|
1298 |
vs->features |= VNC_FEATURE_ZLIB_MASK; |
1299 |
vs->vnc_encoding = enc; |
1300 |
break;
|
1301 |
case VNC_ENCODING_DESKTOPRESIZE:
|
1302 |
vs->features |= VNC_FEATURE_RESIZE_MASK; |
1303 |
break;
|
1304 |
case VNC_ENCODING_POINTER_TYPE_CHANGE:
|
1305 |
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; |
1306 |
break;
|
1307 |
case VNC_ENCODING_EXT_KEY_EVENT:
|
1308 |
send_ext_key_event_ack(vs); |
1309 |
break;
|
1310 |
case VNC_ENCODING_AUDIO:
|
1311 |
send_ext_audio_ack(vs); |
1312 |
break;
|
1313 |
case VNC_ENCODING_WMVi:
|
1314 |
vs->features |= VNC_FEATURE_WMVI_MASK; |
1315 |
break;
|
1316 |
case VNC_ENCODING_COMPRESSLEVEL0 ... VNC_ENCODING_COMPRESSLEVEL0 + 9: |
1317 |
vs->tight_compression = (enc & 0x0F);
|
1318 |
break;
|
1319 |
case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9: |
1320 |
vs->tight_quality = (enc & 0x0F);
|
1321 |
break;
|
1322 |
default:
|
1323 |
VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);
|
1324 |
break;
|
1325 |
} |
1326 |
} |
1327 |
|
1328 |
check_pointer_type_change(vs, kbd_mouse_is_absolute()); |
1329 |
} |
1330 |
|
1331 |
static void set_pixel_conversion(VncState *vs) |
1332 |
{ |
1333 |
if ((vs->clientds.flags & QEMU_BIG_ENDIAN_FLAG) ==
|
1334 |
(vs->ds->surface->flags & QEMU_BIG_ENDIAN_FLAG) && |
1335 |
!memcmp(&(vs->clientds.pf), &(vs->ds->surface->pf), sizeof(PixelFormat))) {
|
1336 |
vs->write_pixels = vnc_write_pixels_copy; |
1337 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
1338 |
case 8: |
1339 |
vs->send_hextile_tile = send_hextile_tile_8; |
1340 |
break;
|
1341 |
case 16: |
1342 |
vs->send_hextile_tile = send_hextile_tile_16; |
1343 |
break;
|
1344 |
case 32: |
1345 |
vs->send_hextile_tile = send_hextile_tile_32; |
1346 |
break;
|
1347 |
} |
1348 |
} else {
|
1349 |
vs->write_pixels = vnc_write_pixels_generic; |
1350 |
switch (vs->ds->surface->pf.bits_per_pixel) {
|
1351 |
case 8: |
1352 |
vs->send_hextile_tile = send_hextile_tile_generic_8; |
1353 |
break;
|
1354 |
case 16: |
1355 |
vs->send_hextile_tile = send_hextile_tile_generic_16; |
1356 |
break;
|
1357 |
case 32: |
1358 |
vs->send_hextile_tile = send_hextile_tile_generic_32; |
1359 |
break;
|
1360 |
} |
1361 |
} |
1362 |
} |
1363 |
|
1364 |
static void set_pixel_format(VncState *vs, |
1365 |
int bits_per_pixel, int depth, |
1366 |
int big_endian_flag, int true_color_flag, |
1367 |
int red_max, int green_max, int blue_max, |
1368 |
int red_shift, int green_shift, int blue_shift) |
1369 |
{ |
1370 |
if (!true_color_flag) {
|
1371 |
vnc_client_error(vs); |
1372 |
return;
|
1373 |
} |
1374 |
|
1375 |
vs->clientds = vs->serverds; |
1376 |
vs->clientds.pf.rmax = red_max; |
1377 |
count_bits(vs->clientds.pf.rbits, red_max); |
1378 |
vs->clientds.pf.rshift = red_shift; |
1379 |
vs->clientds.pf.rmask = red_max << red_shift; |
1380 |
vs->clientds.pf.gmax = green_max; |
1381 |
count_bits(vs->clientds.pf.gbits, green_max); |
1382 |
vs->clientds.pf.gshift = green_shift; |
1383 |
vs->clientds.pf.gmask = green_max << green_shift; |
1384 |
vs->clientds.pf.bmax = blue_max; |
1385 |
count_bits(vs->clientds.pf.bbits, blue_max); |
1386 |
vs->clientds.pf.bshift = blue_shift; |
1387 |
vs->clientds.pf.bmask = blue_max << blue_shift; |
1388 |
vs->clientds.pf.bits_per_pixel = bits_per_pixel; |
1389 |
vs->clientds.pf.bytes_per_pixel = bits_per_pixel / 8;
|
1390 |
vs->clientds.pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel; |
1391 |
vs->clientds.flags = big_endian_flag ? QEMU_BIG_ENDIAN_FLAG : 0x00;
|
1392 |
|
1393 |
set_pixel_conversion(vs); |
1394 |
|
1395 |
vga_hw_invalidate(); |
1396 |
vga_hw_update(); |
1397 |
} |
1398 |
|
1399 |
static void pixel_format_message (VncState *vs) { |
1400 |
char pad[3] = { 0, 0, 0 }; |
1401 |
|
1402 |
vnc_write_u8(vs, vs->ds->surface->pf.bits_per_pixel); /* bits-per-pixel */
|
1403 |
vnc_write_u8(vs, vs->ds->surface->pf.depth); /* depth */
|
1404 |
|
1405 |
#ifdef WORDS_BIGENDIAN
|
1406 |
vnc_write_u8(vs, 1); /* big-endian-flag */ |
1407 |
#else
|
1408 |
vnc_write_u8(vs, 0); /* big-endian-flag */ |
1409 |
#endif
|
1410 |
vnc_write_u8(vs, 1); /* true-color-flag */ |
1411 |
vnc_write_u16(vs, vs->ds->surface->pf.rmax); /* red-max */
|
1412 |
vnc_write_u16(vs, vs->ds->surface->pf.gmax); /* green-max */
|
1413 |
vnc_write_u16(vs, vs->ds->surface->pf.bmax); /* blue-max */
|
1414 |
vnc_write_u8(vs, vs->ds->surface->pf.rshift); /* red-shift */
|
1415 |
vnc_write_u8(vs, vs->ds->surface->pf.gshift); /* green-shift */
|
1416 |
vnc_write_u8(vs, vs->ds->surface->pf.bshift); /* blue-shift */
|
1417 |
if (vs->ds->surface->pf.bits_per_pixel == 32) |
1418 |
vs->send_hextile_tile = send_hextile_tile_32; |
1419 |
else if (vs->ds->surface->pf.bits_per_pixel == 16) |
1420 |
vs->send_hextile_tile = send_hextile_tile_16; |
1421 |
else if (vs->ds->surface->pf.bits_per_pixel == 8) |
1422 |
vs->send_hextile_tile = send_hextile_tile_8; |
1423 |
vs->clientds = *(vs->ds->surface); |
1424 |
vs->clientds.flags |= ~QEMU_ALLOCATED_FLAG; |
1425 |
vs->write_pixels = vnc_write_pixels_copy; |
1426 |
|
1427 |
vnc_write(vs, pad, 3); /* padding */ |
1428 |
} |
1429 |
|
1430 |
static void vnc_dpy_setdata(DisplayState *ds) |
1431 |
{ |
1432 |
/* We don't have to do anything */
|
1433 |
} |
1434 |
|
1435 |
static void vnc_colordepth(DisplayState *ds) |
1436 |
{ |
1437 |
struct VncState *vs = ds->opaque;
|
1438 |
|
1439 |
if (vs->csock != -1 && vnc_has_feature(vs, VNC_FEATURE_WMVI)) { |
1440 |
/* Sending a WMVi message to notify the client*/
|
1441 |
vnc_write_u8(vs, 0); /* msg id */ |
1442 |
vnc_write_u8(vs, 0);
|
1443 |
vnc_write_u16(vs, 1); /* number of rects */ |
1444 |
vnc_framebuffer_update(vs, 0, 0, ds_get_width(ds), ds_get_height(ds), |
1445 |
VNC_ENCODING_WMVi); |
1446 |
pixel_format_message(vs); |
1447 |
vnc_flush(vs); |
1448 |
} else {
|
1449 |
set_pixel_conversion(vs); |
1450 |
} |
1451 |
} |
1452 |
|
1453 |
static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) |
1454 |
{ |
1455 |
int i;
|
1456 |
uint16_t limit; |
1457 |
|
1458 |
switch (data[0]) { |
1459 |
case 0: |
1460 |
if (len == 1) |
1461 |
return 20; |
1462 |
|
1463 |
set_pixel_format(vs, read_u8(data, 4), read_u8(data, 5), |
1464 |
read_u8(data, 6), read_u8(data, 7), |
1465 |
read_u16(data, 8), read_u16(data, 10), |
1466 |
read_u16(data, 12), read_u8(data, 14), |
1467 |
read_u8(data, 15), read_u8(data, 16)); |
1468 |
break;
|
1469 |
case 2: |
1470 |
if (len == 1) |
1471 |
return 4; |
1472 |
|
1473 |
if (len == 4) { |
1474 |
limit = read_u16(data, 2);
|
1475 |
if (limit > 0) |
1476 |
return 4 + (limit * 4); |
1477 |
} else
|
1478 |
limit = read_u16(data, 2);
|
1479 |
|
1480 |
for (i = 0; i < limit; i++) { |
1481 |
int32_t val = read_s32(data, 4 + (i * 4)); |
1482 |
memcpy(data + 4 + (i * 4), &val, sizeof(val)); |
1483 |
} |
1484 |
|
1485 |
set_encodings(vs, (int32_t *)(data + 4), limit);
|
1486 |
break;
|
1487 |
case 3: |
1488 |
if (len == 1) |
1489 |
return 10; |
1490 |
|
1491 |
framebuffer_update_request(vs, |
1492 |
read_u8(data, 1), read_u16(data, 2), read_u16(data, 4), |
1493 |
read_u16(data, 6), read_u16(data, 8)); |
1494 |
break;
|
1495 |
case 4: |
1496 |
if (len == 1) |
1497 |
return 8; |
1498 |
|
1499 |
key_event(vs, read_u8(data, 1), read_u32(data, 4)); |
1500 |
break;
|
1501 |
case 5: |
1502 |
if (len == 1) |
1503 |
return 6; |
1504 |
|
1505 |
pointer_event(vs, read_u8(data, 1), read_u16(data, 2), read_u16(data, 4)); |
1506 |
break;
|
1507 |
case 6: |
1508 |
if (len == 1) |
1509 |
return 8; |
1510 |
|
1511 |
if (len == 8) { |
1512 |
uint32_t dlen = read_u32(data, 4);
|
1513 |
if (dlen > 0) |
1514 |
return 8 + dlen; |
1515 |
} |
1516 |
|
1517 |
client_cut_text(vs, read_u32(data, 4), data + 8); |
1518 |
break;
|
1519 |
case 255: |
1520 |
if (len == 1) |
1521 |
return 2; |
1522 |
|
1523 |
switch (read_u8(data, 1)) { |
1524 |
case 0: |
1525 |
if (len == 2) |
1526 |
return 12; |
1527 |
|
1528 |
ext_key_event(vs, read_u16(data, 2),
|
1529 |
read_u32(data, 4), read_u32(data, 8)); |
1530 |
break;
|
1531 |
case 1: |
1532 |
if (len == 2) |
1533 |
return 4; |
1534 |
|
1535 |
switch (read_u16 (data, 2)) { |
1536 |
case 0: |
1537 |
audio_add(vs); |
1538 |
break;
|
1539 |
case 1: |
1540 |
audio_del(vs); |
1541 |
break;
|
1542 |
case 2: |
1543 |
if (len == 4) |
1544 |
return 10; |
1545 |
switch (read_u8(data, 4)) { |
1546 |
case 0: vs->as.fmt = AUD_FMT_U8; break; |
1547 |
case 1: vs->as.fmt = AUD_FMT_S8; break; |
1548 |
case 2: vs->as.fmt = AUD_FMT_U16; break; |
1549 |
case 3: vs->as.fmt = AUD_FMT_S16; break; |
1550 |
case 4: vs->as.fmt = AUD_FMT_U32; break; |
1551 |
case 5: vs->as.fmt = AUD_FMT_S32; break; |
1552 |
default:
|
1553 |
printf("Invalid audio format %d\n", read_u8(data, 4)); |
1554 |
vnc_client_error(vs); |
1555 |
break;
|
1556 |
} |
1557 |
vs->as.nchannels = read_u8(data, 5);
|
1558 |
if (vs->as.nchannels != 1 && vs->as.nchannels != 2) { |
1559 |
printf("Invalid audio channel coount %d\n",
|
1560 |
read_u8(data, 5));
|
1561 |
vnc_client_error(vs); |
1562 |
break;
|
1563 |
} |
1564 |
vs->as.freq = read_u32(data, 6);
|
1565 |
break;
|
1566 |
default:
|
1567 |
printf ("Invalid audio message %d\n", read_u8(data, 4)); |
1568 |
vnc_client_error(vs); |
1569 |
break;
|
1570 |
} |
1571 |
break;
|
1572 |
|
1573 |
default:
|
1574 |
printf("Msg: %d\n", read_u16(data, 0)); |
1575 |
vnc_client_error(vs); |
1576 |
break;
|
1577 |
} |
1578 |
break;
|
1579 |
default:
|
1580 |
printf("Msg: %d\n", data[0]); |
1581 |
vnc_client_error(vs); |
1582 |
break;
|
1583 |
} |
1584 |
|
1585 |
vnc_read_when(vs, protocol_client_msg, 1);
|
1586 |
return 0; |
1587 |
} |
1588 |
|
1589 |
static int protocol_client_init(VncState *vs, uint8_t *data, size_t len) |
1590 |
{ |
1591 |
char buf[1024]; |
1592 |
int size;
|
1593 |
|
1594 |
vnc_write_u16(vs, ds_get_width(vs->ds)); |
1595 |
vnc_write_u16(vs, ds_get_height(vs->ds)); |
1596 |
|
1597 |
pixel_format_message(vs); |
1598 |
|
1599 |
if (qemu_name)
|
1600 |
size = snprintf(buf, sizeof(buf), "QEMU (%s)", qemu_name); |
1601 |
else
|
1602 |
size = snprintf(buf, sizeof(buf), "QEMU"); |
1603 |
|
1604 |
vnc_write_u32(vs, size); |
1605 |
vnc_write(vs, buf, size); |
1606 |
vnc_flush(vs); |
1607 |
|
1608 |
vnc_read_when(vs, protocol_client_msg, 1);
|
1609 |
|
1610 |
return 0; |
1611 |
} |
1612 |
|
1613 |
static void make_challenge(VncState *vs) |
1614 |
{ |
1615 |
int i;
|
1616 |
|
1617 |
srand(time(NULL)+getpid()+getpid()*987654+rand()); |
1618 |
|
1619 |
for (i = 0 ; i < sizeof(vs->challenge) ; i++) |
1620 |
vs->challenge[i] = (int) (256.0*rand()/(RAND_MAX+1.0)); |
1621 |
} |
1622 |
|
1623 |
static int protocol_client_auth_vnc(VncState *vs, uint8_t *data, size_t len) |
1624 |
{ |
1625 |
unsigned char response[VNC_AUTH_CHALLENGE_SIZE]; |
1626 |
int i, j, pwlen;
|
1627 |
unsigned char key[8]; |
1628 |
|
1629 |
if (!vs->password || !vs->password[0]) { |
1630 |
VNC_DEBUG("No password configured on server");
|
1631 |
vnc_write_u32(vs, 1); /* Reject auth */ |
1632 |
if (vs->minor >= 8) { |
1633 |
static const char err[] = "Authentication failed"; |
1634 |
vnc_write_u32(vs, sizeof(err));
|
1635 |
vnc_write(vs, err, sizeof(err));
|
1636 |
} |
1637 |
vnc_flush(vs); |
1638 |
vnc_client_error(vs); |
1639 |
return 0; |
1640 |
} |
1641 |
|
1642 |
memcpy(response, vs->challenge, VNC_AUTH_CHALLENGE_SIZE); |
1643 |
|
1644 |
/* Calculate the expected challenge response */
|
1645 |
pwlen = strlen(vs->password); |
1646 |
for (i=0; i<sizeof(key); i++) |
1647 |
key[i] = i<pwlen ? vs->password[i] : 0;
|
1648 |
deskey(key, EN0); |
1649 |
for (j = 0; j < VNC_AUTH_CHALLENGE_SIZE; j += 8) |
1650 |
des(response+j, response+j); |
1651 |
|
1652 |
/* Compare expected vs actual challenge response */
|
1653 |
if (memcmp(response, data, VNC_AUTH_CHALLENGE_SIZE) != 0) { |
1654 |
VNC_DEBUG("Client challenge reponse did not match\n");
|
1655 |
vnc_write_u32(vs, 1); /* Reject auth */ |
1656 |
if (vs->minor >= 8) { |
1657 |
static const char err[] = "Authentication failed"; |
1658 |
vnc_write_u32(vs, sizeof(err));
|
1659 |
vnc_write(vs, err, sizeof(err));
|
1660 |
} |
1661 |
vnc_flush(vs); |
1662 |
vnc_client_error(vs); |
1663 |
} else {
|
1664 |
VNC_DEBUG("Accepting VNC challenge response\n");
|
1665 |
vnc_write_u32(vs, 0); /* Accept auth */ |
1666 |
vnc_flush(vs); |
1667 |
|
1668 |
vnc_read_when(vs, protocol_client_init, 1);
|
1669 |
} |
1670 |
return 0; |
1671 |
} |
1672 |
|
1673 |
static int start_auth_vnc(VncState *vs) |
1674 |
{ |
1675 |
make_challenge(vs); |
1676 |
/* Send client a 'random' challenge */
|
1677 |
vnc_write(vs, vs->challenge, sizeof(vs->challenge));
|
1678 |
vnc_flush(vs); |
1679 |
|
1680 |
vnc_read_when(vs, protocol_client_auth_vnc, sizeof(vs->challenge));
|
1681 |
return 0; |
1682 |
} |
1683 |
|
1684 |
|
1685 |
#ifdef CONFIG_VNC_TLS
|
1686 |
#define DH_BITS 1024 |
1687 |
static gnutls_dh_params_t dh_params;
|
1688 |
|
1689 |
static int vnc_tls_initialize(void) |
1690 |
{ |
1691 |
static int tlsinitialized = 0; |
1692 |
|
1693 |
if (tlsinitialized)
|
1694 |
return 1; |
1695 |
|
1696 |
if (gnutls_global_init () < 0) |
1697 |
return 0; |
1698 |
|
1699 |
/* XXX ought to re-generate diffie-hellmen params periodically */
|
1700 |
if (gnutls_dh_params_init (&dh_params) < 0) |
1701 |
return 0; |
1702 |
if (gnutls_dh_params_generate2 (dh_params, DH_BITS) < 0) |
1703 |
return 0; |
1704 |
|
1705 |
#if defined(_VNC_DEBUG) && _VNC_DEBUG >= 2 |
1706 |
gnutls_global_set_log_level(10);
|
1707 |
gnutls_global_set_log_function(vnc_debug_gnutls_log); |
1708 |
#endif
|
1709 |
|
1710 |
tlsinitialized = 1;
|
1711 |
|
1712 |
return 1; |
1713 |
} |
1714 |
|
1715 |
static gnutls_anon_server_credentials vnc_tls_initialize_anon_cred(void) |
1716 |
{ |
1717 |
gnutls_anon_server_credentials anon_cred; |
1718 |
int ret;
|
1719 |
|
1720 |
if ((ret = gnutls_anon_allocate_server_credentials(&anon_cred)) < 0) { |
1721 |
VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
|
1722 |
return NULL; |
1723 |
} |
1724 |
|
1725 |
gnutls_anon_set_server_dh_params(anon_cred, dh_params); |
1726 |
|
1727 |
return anon_cred;
|
1728 |
} |
1729 |
|
1730 |
|
1731 |
static gnutls_certificate_credentials_t vnc_tls_initialize_x509_cred(VncState *vs)
|
1732 |
{ |
1733 |
gnutls_certificate_credentials_t x509_cred; |
1734 |
int ret;
|
1735 |
|
1736 |
if (!vs->x509cacert) {
|
1737 |
VNC_DEBUG("No CA x509 certificate specified\n");
|
1738 |
return NULL; |
1739 |
} |
1740 |
if (!vs->x509cert) {
|
1741 |
VNC_DEBUG("No server x509 certificate specified\n");
|
1742 |
return NULL; |
1743 |
} |
1744 |
if (!vs->x509key) {
|
1745 |
VNC_DEBUG("No server private key specified\n");
|
1746 |
return NULL; |
1747 |
} |
1748 |
|
1749 |
if ((ret = gnutls_certificate_allocate_credentials(&x509_cred)) < 0) { |
1750 |
VNC_DEBUG("Cannot allocate credentials %s\n", gnutls_strerror(ret));
|
1751 |
return NULL; |
1752 |
} |
1753 |
if ((ret = gnutls_certificate_set_x509_trust_file(x509_cred,
|
1754 |
vs->x509cacert, |
1755 |
GNUTLS_X509_FMT_PEM)) < 0) {
|
1756 |
VNC_DEBUG("Cannot load CA certificate %s\n", gnutls_strerror(ret));
|
1757 |
gnutls_certificate_free_credentials(x509_cred); |
1758 |
return NULL; |
1759 |
} |
1760 |
|
1761 |
if ((ret = gnutls_certificate_set_x509_key_file (x509_cred,
|
1762 |
vs->x509cert, |
1763 |
vs->x509key, |
1764 |
GNUTLS_X509_FMT_PEM)) < 0) {
|
1765 |
VNC_DEBUG("Cannot load certificate & key %s\n", gnutls_strerror(ret));
|
1766 |
gnutls_certificate_free_credentials(x509_cred); |
1767 |
return NULL; |
1768 |
} |
1769 |
|
1770 |
if (vs->x509cacrl) {
|
1771 |
if ((ret = gnutls_certificate_set_x509_crl_file(x509_cred,
|
1772 |
vs->x509cacrl, |
1773 |
GNUTLS_X509_FMT_PEM)) < 0) {
|
1774 |
VNC_DEBUG("Cannot load CRL %s\n", gnutls_strerror(ret));
|
1775 |
gnutls_certificate_free_credentials(x509_cred); |
1776 |
return NULL; |
1777 |
} |
1778 |
} |
1779 |
|
1780 |
gnutls_certificate_set_dh_params (x509_cred, dh_params); |
1781 |
|
1782 |
return x509_cred;
|
1783 |
} |
1784 |
|
1785 |
static int vnc_validate_certificate(struct VncState *vs) |
1786 |
{ |
1787 |
int ret;
|
1788 |
unsigned int status; |
1789 |
const gnutls_datum_t *certs;
|
1790 |
unsigned int nCerts, i; |
1791 |
time_t now; |
1792 |
|
1793 |
VNC_DEBUG("Validating client certificate\n");
|
1794 |
if ((ret = gnutls_certificate_verify_peers2 (vs->tls_session, &status)) < 0) { |
1795 |
VNC_DEBUG("Verify failed %s\n", gnutls_strerror(ret));
|
1796 |
return -1; |
1797 |
} |
1798 |
|
1799 |
if ((now = time(NULL)) == ((time_t)-1)) { |
1800 |
return -1; |
1801 |
} |
1802 |
|
1803 |
if (status != 0) { |
1804 |
if (status & GNUTLS_CERT_INVALID)
|
1805 |
VNC_DEBUG("The certificate is not trusted.\n");
|
1806 |
|
1807 |
if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
|
1808 |
VNC_DEBUG("The certificate hasn't got a known issuer.\n");
|
1809 |
|
1810 |
if (status & GNUTLS_CERT_REVOKED)
|
1811 |
VNC_DEBUG("The certificate has been revoked.\n");
|
1812 |
|
1813 |
if (status & GNUTLS_CERT_INSECURE_ALGORITHM)
|
1814 |
VNC_DEBUG("The certificate uses an insecure algorithm\n");
|
1815 |
|
1816 |
return -1; |
1817 |
} else {
|
1818 |
VNC_DEBUG("Certificate is valid!\n");
|
1819 |
} |
1820 |
|
1821 |
/* Only support x509 for now */
|
1822 |
if (gnutls_certificate_type_get(vs->tls_session) != GNUTLS_CRT_X509)
|
1823 |
return -1; |
1824 |
|
1825 |
if (!(certs = gnutls_certificate_get_peers(vs->tls_session, &nCerts)))
|
1826 |
return -1; |
1827 |
|
1828 |
for (i = 0 ; i < nCerts ; i++) { |
1829 |
gnutls_x509_crt_t cert; |
1830 |
VNC_DEBUG ("Checking certificate chain %d\n", i);
|
1831 |
if (gnutls_x509_crt_init (&cert) < 0) |
1832 |
return -1; |
1833 |
|
1834 |
if (gnutls_x509_crt_import(cert, &certs[i], GNUTLS_X509_FMT_DER) < 0) { |
1835 |
gnutls_x509_crt_deinit (cert); |
1836 |
return -1; |
1837 |
} |
1838 |
|
1839 |
if (gnutls_x509_crt_get_expiration_time (cert) < now) {
|
1840 |
VNC_DEBUG("The certificate has expired\n");
|
1841 |
gnutls_x509_crt_deinit (cert); |
1842 |
return -1; |
1843 |
} |
1844 |
|
1845 |
if (gnutls_x509_crt_get_activation_time (cert) > now) {
|
1846 |
VNC_DEBUG("The certificate is not yet activated\n");
|
1847 |
gnutls_x509_crt_deinit (cert); |
1848 |
return -1; |
1849 |
} |
1850 |
|
1851 |
if (gnutls_x509_crt_get_activation_time (cert) > now) {
|
1852 |
VNC_DEBUG("The certificate is not yet activated\n");
|
1853 |
gnutls_x509_crt_deinit (cert); |
1854 |
return -1; |
1855 |
} |
1856 |
|
1857 |
gnutls_x509_crt_deinit (cert); |
1858 |
} |
1859 |
|
1860 |
return 0; |
1861 |
} |
1862 |
|
1863 |
|
1864 |
static int start_auth_vencrypt_subauth(VncState *vs) |
1865 |
{ |
1866 |
switch (vs->subauth) {
|
1867 |
case VNC_AUTH_VENCRYPT_TLSNONE:
|
1868 |
case VNC_AUTH_VENCRYPT_X509NONE:
|
1869 |
VNC_DEBUG("Accept TLS auth none\n");
|
1870 |
vnc_write_u32(vs, 0); /* Accept auth completion */ |
1871 |
vnc_read_when(vs, protocol_client_init, 1);
|
1872 |
break;
|
1873 |
|
1874 |
case VNC_AUTH_VENCRYPT_TLSVNC:
|
1875 |
case VNC_AUTH_VENCRYPT_X509VNC:
|
1876 |
VNC_DEBUG("Start TLS auth VNC\n");
|
1877 |
return start_auth_vnc(vs);
|
1878 |
|
1879 |
default: /* Should not be possible, but just in case */ |
1880 |
VNC_DEBUG("Reject auth %d\n", vs->auth);
|
1881 |
vnc_write_u8(vs, 1);
|
1882 |
if (vs->minor >= 8) { |
1883 |
static const char err[] = "Unsupported authentication type"; |
1884 |
vnc_write_u32(vs, sizeof(err));
|
1885 |
vnc_write(vs, err, sizeof(err));
|
1886 |
} |
1887 |
vnc_client_error(vs); |
1888 |
} |
1889 |
|
1890 |
return 0; |
1891 |
} |
1892 |
|
1893 |
static void vnc_handshake_io(void *opaque); |
1894 |
|
1895 |
static int vnc_continue_handshake(struct VncState *vs) { |
1896 |
int ret;
|
1897 |
|
1898 |
if ((ret = gnutls_handshake(vs->tls_session)) < 0) { |
1899 |
if (!gnutls_error_is_fatal(ret)) {
|
1900 |
VNC_DEBUG("Handshake interrupted (blocking)\n");
|
1901 |
if (!gnutls_record_get_direction(vs->tls_session))
|
1902 |
qemu_set_fd_handler(vs->csock, vnc_handshake_io, NULL, vs);
|
1903 |
else
|
1904 |
qemu_set_fd_handler(vs->csock, NULL, vnc_handshake_io, vs);
|
1905 |
return 0; |
1906 |
} |
1907 |
VNC_DEBUG("Handshake failed %s\n", gnutls_strerror(ret));
|
1908 |
vnc_client_error(vs); |
1909 |
return -1; |
1910 |
} |
1911 |
|
1912 |
if (vs->x509verify) {
|
1913 |
if (vnc_validate_certificate(vs) < 0) { |
1914 |
VNC_DEBUG("Client verification failed\n");
|
1915 |
vnc_client_error(vs); |
1916 |
return -1; |
1917 |
} else {
|
1918 |
VNC_DEBUG("Client verification passed\n");
|
1919 |
} |
1920 |
} |
1921 |
|
1922 |
VNC_DEBUG("Handshake done, switching to TLS data mode\n");
|
1923 |
vs->wiremode = VNC_WIREMODE_TLS; |
1924 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, vnc_client_write, vs);
|
1925 |
|
1926 |
return start_auth_vencrypt_subauth(vs);
|
1927 |
} |
1928 |
|
1929 |
static void vnc_handshake_io(void *opaque) { |
1930 |
struct VncState *vs = (struct VncState *)opaque; |
1931 |
|
1932 |
VNC_DEBUG("Handshake IO continue\n");
|
1933 |
vnc_continue_handshake(vs); |
1934 |
} |
1935 |
|
1936 |
#define NEED_X509_AUTH(vs) \
|
1937 |
((vs)->subauth == VNC_AUTH_VENCRYPT_X509NONE || \ |
1938 |
(vs)->subauth == VNC_AUTH_VENCRYPT_X509VNC || \ |
1939 |
(vs)->subauth == VNC_AUTH_VENCRYPT_X509PLAIN) |
1940 |
|
1941 |
|
1942 |
static int vnc_start_tls(struct VncState *vs) { |
1943 |
static const int cert_type_priority[] = { GNUTLS_CRT_X509, 0 }; |
1944 |
static const int protocol_priority[]= { GNUTLS_TLS1_1, GNUTLS_TLS1_0, GNUTLS_SSL3, 0 }; |
1945 |
static const int kx_anon[] = {GNUTLS_KX_ANON_DH, 0}; |
1946 |
static const int kx_x509[] = {GNUTLS_KX_DHE_DSS, GNUTLS_KX_RSA, GNUTLS_KX_DHE_RSA, GNUTLS_KX_SRP, 0}; |
1947 |
|
1948 |
VNC_DEBUG("Do TLS setup\n");
|
1949 |
if (vnc_tls_initialize() < 0) { |
1950 |
VNC_DEBUG("Failed to init TLS\n");
|
1951 |
vnc_client_error(vs); |
1952 |
return -1; |
1953 |
} |
1954 |
if (vs->tls_session == NULL) { |
1955 |
if (gnutls_init(&vs->tls_session, GNUTLS_SERVER) < 0) { |
1956 |
vnc_client_error(vs); |
1957 |
return -1; |
1958 |
} |
1959 |
|
1960 |
if (gnutls_set_default_priority(vs->tls_session) < 0) { |
1961 |
gnutls_deinit(vs->tls_session); |
1962 |
vs->tls_session = NULL;
|
1963 |
vnc_client_error(vs); |
1964 |
return -1; |
1965 |
} |
1966 |
|
1967 |
if (gnutls_kx_set_priority(vs->tls_session, NEED_X509_AUTH(vs) ? kx_x509 : kx_anon) < 0) { |
1968 |
gnutls_deinit(vs->tls_session); |
1969 |
vs->tls_session = NULL;
|
1970 |
vnc_client_error(vs); |
1971 |
return -1; |
1972 |
} |
1973 |
|
1974 |
if (gnutls_certificate_type_set_priority(vs->tls_session, cert_type_priority) < 0) { |
1975 |
gnutls_deinit(vs->tls_session); |
1976 |
vs->tls_session = NULL;
|
1977 |
vnc_client_error(vs); |
1978 |
return -1; |
1979 |
} |
1980 |
|
1981 |
if (gnutls_protocol_set_priority(vs->tls_session, protocol_priority) < 0) { |
1982 |
gnutls_deinit(vs->tls_session); |
1983 |
vs->tls_session = NULL;
|
1984 |
vnc_client_error(vs); |
1985 |
return -1; |
1986 |
} |
1987 |
|
1988 |
if (NEED_X509_AUTH(vs)) {
|
1989 |
gnutls_certificate_server_credentials x509_cred = vnc_tls_initialize_x509_cred(vs); |
1990 |
if (!x509_cred) {
|
1991 |
gnutls_deinit(vs->tls_session); |
1992 |
vs->tls_session = NULL;
|
1993 |
vnc_client_error(vs); |
1994 |
return -1; |
1995 |
} |
1996 |
if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_CERTIFICATE, x509_cred) < 0) { |
1997 |
gnutls_deinit(vs->tls_session); |
1998 |
vs->tls_session = NULL;
|
1999 |
gnutls_certificate_free_credentials(x509_cred); |
2000 |
vnc_client_error(vs); |
2001 |
return -1; |
2002 |
} |
2003 |
if (vs->x509verify) {
|
2004 |
VNC_DEBUG("Requesting a client certificate\n");
|
2005 |
gnutls_certificate_server_set_request (vs->tls_session, GNUTLS_CERT_REQUEST); |
2006 |
} |
2007 |
|
2008 |
} else {
|
2009 |
gnutls_anon_server_credentials anon_cred = vnc_tls_initialize_anon_cred(); |
2010 |
if (!anon_cred) {
|
2011 |
gnutls_deinit(vs->tls_session); |
2012 |
vs->tls_session = NULL;
|
2013 |
vnc_client_error(vs); |
2014 |
return -1; |
2015 |
} |
2016 |
if (gnutls_credentials_set(vs->tls_session, GNUTLS_CRD_ANON, anon_cred) < 0) { |
2017 |
gnutls_deinit(vs->tls_session); |
2018 |
vs->tls_session = NULL;
|
2019 |
gnutls_anon_free_server_credentials(anon_cred); |
2020 |
vnc_client_error(vs); |
2021 |
return -1; |
2022 |
} |
2023 |
} |
2024 |
|
2025 |
gnutls_transport_set_ptr(vs->tls_session, (gnutls_transport_ptr_t)vs); |
2026 |
gnutls_transport_set_push_function(vs->tls_session, vnc_tls_push); |
2027 |
gnutls_transport_set_pull_function(vs->tls_session, vnc_tls_pull); |
2028 |
} |
2029 |
|
2030 |
VNC_DEBUG("Start TLS handshake process\n");
|
2031 |
return vnc_continue_handshake(vs);
|
2032 |
} |
2033 |
|
2034 |
static int protocol_client_vencrypt_auth(VncState *vs, uint8_t *data, size_t len) |
2035 |
{ |
2036 |
int auth = read_u32(data, 0); |
2037 |
|
2038 |
if (auth != vs->subauth) {
|
2039 |
VNC_DEBUG("Rejecting auth %d\n", auth);
|
2040 |
vnc_write_u8(vs, 0); /* Reject auth */ |
2041 |
vnc_flush(vs); |
2042 |
vnc_client_error(vs); |
2043 |
} else {
|
2044 |
VNC_DEBUG("Accepting auth %d, starting handshake\n", auth);
|
2045 |
vnc_write_u8(vs, 1); /* Accept auth */ |
2046 |
vnc_flush(vs); |
2047 |
|
2048 |
if (vnc_start_tls(vs) < 0) { |
2049 |
VNC_DEBUG("Failed to complete TLS\n");
|
2050 |
return 0; |
2051 |
} |
2052 |
|
2053 |
if (vs->wiremode == VNC_WIREMODE_TLS) {
|
2054 |
VNC_DEBUG("Starting VeNCrypt subauth\n");
|
2055 |
return start_auth_vencrypt_subauth(vs);
|
2056 |
} else {
|
2057 |
VNC_DEBUG("TLS handshake blocked\n");
|
2058 |
return 0; |
2059 |
} |
2060 |
} |
2061 |
return 0; |
2062 |
} |
2063 |
|
2064 |
static int protocol_client_vencrypt_init(VncState *vs, uint8_t *data, size_t len) |
2065 |
{ |
2066 |
if (data[0] != 0 || |
2067 |
data[1] != 2) { |
2068 |
VNC_DEBUG("Unsupported VeNCrypt protocol %d.%d\n", (int)data[0], (int)data[1]); |
2069 |
vnc_write_u8(vs, 1); /* Reject version */ |
2070 |
vnc_flush(vs); |
2071 |
vnc_client_error(vs); |
2072 |
} else {
|
2073 |
VNC_DEBUG("Sending allowed auth %d\n", vs->subauth);
|
2074 |
vnc_write_u8(vs, 0); /* Accept version */ |
2075 |
vnc_write_u8(vs, 1); /* Number of sub-auths */ |
2076 |
vnc_write_u32(vs, vs->subauth); /* The supported auth */
|
2077 |
vnc_flush(vs); |
2078 |
vnc_read_when(vs, protocol_client_vencrypt_auth, 4);
|
2079 |
} |
2080 |
return 0; |
2081 |
} |
2082 |
|
2083 |
static int start_auth_vencrypt(VncState *vs) |
2084 |
{ |
2085 |
/* Send VeNCrypt version 0.2 */
|
2086 |
vnc_write_u8(vs, 0);
|
2087 |
vnc_write_u8(vs, 2);
|
2088 |
|
2089 |
vnc_read_when(vs, protocol_client_vencrypt_init, 2);
|
2090 |
return 0; |
2091 |
} |
2092 |
#endif /* CONFIG_VNC_TLS */ |
2093 |
|
2094 |
static int protocol_client_auth(VncState *vs, uint8_t *data, size_t len) |
2095 |
{ |
2096 |
/* We only advertise 1 auth scheme at a time, so client
|
2097 |
* must pick the one we sent. Verify this */
|
2098 |
if (data[0] != vs->auth) { /* Reject auth */ |
2099 |
VNC_DEBUG("Reject auth %d\n", (int)data[0]); |
2100 |
vnc_write_u32(vs, 1);
|
2101 |
if (vs->minor >= 8) { |
2102 |
static const char err[] = "Authentication failed"; |
2103 |
vnc_write_u32(vs, sizeof(err));
|
2104 |
vnc_write(vs, err, sizeof(err));
|
2105 |
} |
2106 |
vnc_client_error(vs); |
2107 |
} else { /* Accept requested auth */ |
2108 |
VNC_DEBUG("Client requested auth %d\n", (int)data[0]); |
2109 |
switch (vs->auth) {
|
2110 |
case VNC_AUTH_NONE:
|
2111 |
VNC_DEBUG("Accept auth none\n");
|
2112 |
if (vs->minor >= 8) { |
2113 |
vnc_write_u32(vs, 0); /* Accept auth completion */ |
2114 |
vnc_flush(vs); |
2115 |
} |
2116 |
vnc_read_when(vs, protocol_client_init, 1);
|
2117 |
break;
|
2118 |
|
2119 |
case VNC_AUTH_VNC:
|
2120 |
VNC_DEBUG("Start VNC auth\n");
|
2121 |
return start_auth_vnc(vs);
|
2122 |
|
2123 |
#ifdef CONFIG_VNC_TLS
|
2124 |
case VNC_AUTH_VENCRYPT:
|
2125 |
VNC_DEBUG("Accept VeNCrypt auth\n");;
|
2126 |
return start_auth_vencrypt(vs);
|
2127 |
#endif /* CONFIG_VNC_TLS */ |
2128 |
|
2129 |
default: /* Should not be possible, but just in case */ |
2130 |
VNC_DEBUG("Reject auth %d\n", vs->auth);
|
2131 |
vnc_write_u8(vs, 1);
|
2132 |
if (vs->minor >= 8) { |
2133 |
static const char err[] = "Authentication failed"; |
2134 |
vnc_write_u32(vs, sizeof(err));
|
2135 |
vnc_write(vs, err, sizeof(err));
|
2136 |
} |
2137 |
vnc_client_error(vs); |
2138 |
} |
2139 |
} |
2140 |
return 0; |
2141 |
} |
2142 |
|
2143 |
static int protocol_version(VncState *vs, uint8_t *version, size_t len) |
2144 |
{ |
2145 |
char local[13]; |
2146 |
|
2147 |
memcpy(local, version, 12);
|
2148 |
local[12] = 0; |
2149 |
|
2150 |
if (sscanf(local, "RFB %03d.%03d\n", &vs->major, &vs->minor) != 2) { |
2151 |
VNC_DEBUG("Malformed protocol version %s\n", local);
|
2152 |
vnc_client_error(vs); |
2153 |
return 0; |
2154 |
} |
2155 |
VNC_DEBUG("Client request protocol version %d.%d\n", vs->major, vs->minor);
|
2156 |
if (vs->major != 3 || |
2157 |
(vs->minor != 3 &&
|
2158 |
vs->minor != 4 &&
|
2159 |
vs->minor != 5 &&
|
2160 |
vs->minor != 7 &&
|
2161 |
vs->minor != 8)) {
|
2162 |
VNC_DEBUG("Unsupported client version\n");
|
2163 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2164 |
vnc_flush(vs); |
2165 |
vnc_client_error(vs); |
2166 |
return 0; |
2167 |
} |
2168 |
/* Some broken clients report v3.4 or v3.5, which spec requires to be treated
|
2169 |
* as equivalent to v3.3 by servers
|
2170 |
*/
|
2171 |
if (vs->minor == 4 || vs->minor == 5) |
2172 |
vs->minor = 3;
|
2173 |
|
2174 |
if (vs->minor == 3) { |
2175 |
if (vs->auth == VNC_AUTH_NONE) {
|
2176 |
VNC_DEBUG("Tell client auth none\n");
|
2177 |
vnc_write_u32(vs, vs->auth); |
2178 |
vnc_flush(vs); |
2179 |
vnc_read_when(vs, protocol_client_init, 1);
|
2180 |
} else if (vs->auth == VNC_AUTH_VNC) { |
2181 |
VNC_DEBUG("Tell client VNC auth\n");
|
2182 |
vnc_write_u32(vs, vs->auth); |
2183 |
vnc_flush(vs); |
2184 |
start_auth_vnc(vs); |
2185 |
} else {
|
2186 |
VNC_DEBUG("Unsupported auth %d for protocol 3.3\n", vs->auth);
|
2187 |
vnc_write_u32(vs, VNC_AUTH_INVALID); |
2188 |
vnc_flush(vs); |
2189 |
vnc_client_error(vs); |
2190 |
} |
2191 |
} else {
|
2192 |
VNC_DEBUG("Telling client we support auth %d\n", vs->auth);
|
2193 |
vnc_write_u8(vs, 1); /* num auth */ |
2194 |
vnc_write_u8(vs, vs->auth); |
2195 |
vnc_read_when(vs, protocol_client_auth, 1);
|
2196 |
vnc_flush(vs); |
2197 |
} |
2198 |
|
2199 |
return 0; |
2200 |
} |
2201 |
|
2202 |
static void vnc_connect(VncState *vs) |
2203 |
{ |
2204 |
VNC_DEBUG("New client on socket %d\n", vs->csock);
|
2205 |
dcl->idle = 0;
|
2206 |
socket_set_nonblock(vs->csock); |
2207 |
qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs); |
2208 |
vnc_write(vs, "RFB 003.008\n", 12); |
2209 |
vnc_flush(vs); |
2210 |
vnc_read_when(vs, protocol_version, 12);
|
2211 |
memset(vs->old_data, 0, ds_get_linesize(vs->ds) * ds_get_height(vs->ds));
|
2212 |
memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row)); |
2213 |
vs->features = 0;
|
2214 |
dcl->dpy_copy = NULL;
|
2215 |
vnc_update_client(vs); |
2216 |
reset_keys(vs); |
2217 |
} |
2218 |
|
2219 |
static void vnc_listen_read(void *opaque) |
2220 |
{ |
2221 |
VncState *vs = opaque; |
2222 |
struct sockaddr_in addr;
|
2223 |
socklen_t addrlen = sizeof(addr);
|
2224 |
|
2225 |
/* Catch-up */
|
2226 |
vga_hw_update(); |
2227 |
|
2228 |
vs->csock = accept(vs->lsock, (struct sockaddr *)&addr, &addrlen);
|
2229 |
if (vs->csock != -1) { |
2230 |
vnc_connect(vs); |
2231 |
} |
2232 |
} |
2233 |
|
2234 |
void vnc_display_init(DisplayState *ds)
|
2235 |
{ |
2236 |
VncState *vs; |
2237 |
|
2238 |
vs = qemu_mallocz(sizeof(VncState));
|
2239 |
dcl = qemu_mallocz(sizeof(DisplayChangeListener));
|
2240 |
|
2241 |
ds->opaque = vs; |
2242 |
dcl->idle = 1;
|
2243 |
vnc_state = vs; |
2244 |
vs->display = NULL;
|
2245 |
vs->password = NULL;
|
2246 |
|
2247 |
vs->lsock = -1;
|
2248 |
vs->csock = -1;
|
2249 |
vs->last_x = -1;
|
2250 |
vs->last_y = -1;
|
2251 |
|
2252 |
vs->ds = ds; |
2253 |
|
2254 |
if (keyboard_layout)
|
2255 |
vs->kbd_layout = init_keyboard_layout(keyboard_layout); |
2256 |
else
|
2257 |
vs->kbd_layout = init_keyboard_layout("en-us");
|
2258 |
|
2259 |
if (!vs->kbd_layout)
|
2260 |
exit(1);
|
2261 |
|
2262 |
vs->timer = qemu_new_timer(rt_clock, vnc_update_client, vs); |
2263 |
|
2264 |
dcl->dpy_update = vnc_dpy_update; |
2265 |
dcl->dpy_resize = vnc_dpy_resize; |
2266 |
dcl->dpy_setdata = vnc_dpy_setdata; |
2267 |
dcl->dpy_refresh = NULL;
|
2268 |
register_displaychangelistener(ds, dcl); |
2269 |
|
2270 |
vs->as.freq = 44100;
|
2271 |
vs->as.nchannels = 2;
|
2272 |
vs->as.fmt = AUD_FMT_S16; |
2273 |
vs->as.endianness = 0;
|
2274 |
} |
2275 |
|
2276 |
#ifdef CONFIG_VNC_TLS
|
2277 |
static int vnc_set_x509_credential(VncState *vs, |
2278 |
const char *certdir, |
2279 |
const char *filename, |
2280 |
char **cred,
|
2281 |
int ignoreMissing)
|
2282 |
{ |
2283 |
struct stat sb;
|
2284 |
|
2285 |
if (*cred) {
|
2286 |
qemu_free(*cred); |
2287 |
*cred = NULL;
|
2288 |
} |
2289 |
|
2290 |
*cred = qemu_malloc(strlen(certdir) + strlen(filename) + 2);
|
2291 |
|
2292 |
strcpy(*cred, certdir); |
2293 |
strcat(*cred, "/");
|
2294 |
strcat(*cred, filename); |
2295 |
|
2296 |
VNC_DEBUG("Check %s\n", *cred);
|
2297 |
if (stat(*cred, &sb) < 0) { |
2298 |
qemu_free(*cred); |
2299 |
*cred = NULL;
|
2300 |
if (ignoreMissing && errno == ENOENT)
|
2301 |
return 0; |
2302 |
return -1; |
2303 |
} |
2304 |
|
2305 |
return 0; |
2306 |
} |
2307 |
|
2308 |
static int vnc_set_x509_credential_dir(VncState *vs, |
2309 |
const char *certdir) |
2310 |
{ |
2311 |
if (vnc_set_x509_credential(vs, certdir, X509_CA_CERT_FILE, &vs->x509cacert, 0) < 0) |
2312 |
goto cleanup;
|
2313 |
if (vnc_set_x509_credential(vs, certdir, X509_CA_CRL_FILE, &vs->x509cacrl, 1) < 0) |
2314 |
goto cleanup;
|
2315 |
if (vnc_set_x509_credential(vs, certdir, X509_SERVER_CERT_FILE, &vs->x509cert, 0) < 0) |
2316 |
goto cleanup;
|
2317 |
if (vnc_set_x509_credential(vs, certdir, X509_SERVER_KEY_FILE, &vs->x509key, 0) < 0) |
2318 |
goto cleanup;
|
2319 |
|
2320 |
return 0; |
2321 |
|
2322 |
cleanup:
|
2323 |
qemu_free(vs->x509cacert); |
2324 |
qemu_free(vs->x509cacrl); |
2325 |
qemu_free(vs->x509cert); |
2326 |
qemu_free(vs->x509key); |
2327 |
vs->x509cacert = vs->x509cacrl = vs->x509cert = vs->x509key = NULL;
|
2328 |
return -1; |
2329 |
} |
2330 |
#endif /* CONFIG_VNC_TLS */ |
2331 |
|
2332 |
void vnc_display_close(DisplayState *ds)
|
2333 |
{ |
2334 |
VncState *vs = ds ? (VncState *)ds->opaque : vnc_state; |
2335 |
|
2336 |
if (vs->display) {
|
2337 |
qemu_free(vs->display); |
2338 |
vs->display = NULL;
|
2339 |
} |
2340 |
if (vs->lsock != -1) { |
2341 |
qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL); |
2342 |
close(vs->lsock); |
2343 |
vs->lsock = -1;
|
2344 |
} |
2345 |
if (vs->csock != -1) { |
2346 |
qemu_set_fd_handler2(vs->csock, NULL, NULL, NULL, NULL); |
2347 |
closesocket(vs->csock); |
2348 |
vs->csock = -1;
|
2349 |
buffer_reset(&vs->input); |
2350 |
buffer_reset(&vs->output); |
2351 |
vs->need_update = 0;
|
2352 |
#ifdef CONFIG_VNC_TLS
|
2353 |
if (vs->tls_session) {
|
2354 |
gnutls_deinit(vs->tls_session); |
2355 |
vs->tls_session = NULL;
|
2356 |
} |
2357 |
vs->wiremode = VNC_WIREMODE_CLEAR; |
2358 |
#endif /* CONFIG_VNC_TLS */ |
2359 |
} |
2360 |
vs->auth = VNC_AUTH_INVALID; |
2361 |
#ifdef CONFIG_VNC_TLS
|
2362 |
vs->subauth = VNC_AUTH_INVALID; |
2363 |
vs->x509verify = 0;
|
2364 |
#endif
|
2365 |
audio_del(vs); |
2366 |
} |
2367 |
|
2368 |
int vnc_display_password(DisplayState *ds, const char *password) |
2369 |
{ |
2370 |
VncState *vs = ds ? (VncState *)ds->opaque : vnc_state; |
2371 |
|
2372 |
if (vs->password) {
|
2373 |
qemu_free(vs->password); |
2374 |
vs->password = NULL;
|
2375 |
} |
2376 |
if (password && password[0]) { |
2377 |
if (!(vs->password = qemu_strdup(password)))
|
2378 |
return -1; |
2379 |
} |
2380 |
|
2381 |
return 0; |
2382 |
} |
2383 |
|
2384 |
int vnc_display_open(DisplayState *ds, const char *display) |
2385 |
{ |
2386 |
VncState *vs = ds ? (VncState *)ds->opaque : vnc_state; |
2387 |
const char *options; |
2388 |
int password = 0; |
2389 |
int reverse = 0; |
2390 |
int to_port = 0; |
2391 |
#ifdef CONFIG_VNC_TLS
|
2392 |
int tls = 0, x509 = 0; |
2393 |
#endif
|
2394 |
|
2395 |
vnc_display_close(ds); |
2396 |
if (strcmp(display, "none") == 0) |
2397 |
return 0; |
2398 |
|
2399 |
if (!(vs->display = strdup(display)))
|
2400 |
return -1; |
2401 |
|
2402 |
options = display; |
2403 |
while ((options = strchr(options, ','))) { |
2404 |
options++; |
2405 |
if (strncmp(options, "password", 8) == 0) { |
2406 |
password = 1; /* Require password auth */ |
2407 |
} else if (strncmp(options, "reverse", 7) == 0) { |
2408 |
reverse = 1;
|
2409 |
} else if (strncmp(options, "to=", 3) == 0) { |
2410 |
to_port = atoi(options+3) + 5900; |
2411 |
#ifdef CONFIG_VNC_TLS
|
2412 |
} else if (strncmp(options, "tls", 3) == 0) { |
2413 |
tls = 1; /* Require TLS */ |
2414 |
} else if (strncmp(options, "x509", 4) == 0) { |
2415 |
char *start, *end;
|
2416 |
x509 = 1; /* Require x509 certificates */ |
2417 |
if (strncmp(options, "x509verify", 10) == 0) |
2418 |
vs->x509verify = 1; /* ...and verify client certs */ |
2419 |
|
2420 |
/* Now check for 'x509=/some/path' postfix
|
2421 |
* and use that to setup x509 certificate/key paths */
|
2422 |
start = strchr(options, '=');
|
2423 |
end = strchr(options, ',');
|
2424 |
if (start && (!end || (start < end))) {
|
2425 |
int len = end ? end-(start+1) : strlen(start+1); |
2426 |
char *path = qemu_strndup(start + 1, len); |
2427 |
|
2428 |
VNC_DEBUG("Trying certificate path '%s'\n", path);
|
2429 |
if (vnc_set_x509_credential_dir(vs, path) < 0) { |
2430 |
fprintf(stderr, "Failed to find x509 certificates/keys in %s\n", path);
|
2431 |
qemu_free(path); |
2432 |
qemu_free(vs->display); |
2433 |
vs->display = NULL;
|
2434 |
return -1; |
2435 |
} |
2436 |
qemu_free(path); |
2437 |
} else {
|
2438 |
fprintf(stderr, "No certificate path provided\n");
|
2439 |
qemu_free(vs->display); |
2440 |
vs->display = NULL;
|
2441 |
return -1; |
2442 |
} |
2443 |
#endif
|
2444 |
} |
2445 |
} |
2446 |
|
2447 |
if (password) {
|
2448 |
#ifdef CONFIG_VNC_TLS
|
2449 |
if (tls) {
|
2450 |
vs->auth = VNC_AUTH_VENCRYPT; |
2451 |
if (x509) {
|
2452 |
VNC_DEBUG("Initializing VNC server with x509 password auth\n");
|
2453 |
vs->subauth = VNC_AUTH_VENCRYPT_X509VNC; |
2454 |
} else {
|
2455 |
VNC_DEBUG("Initializing VNC server with TLS password auth\n");
|
2456 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSVNC; |
2457 |
} |
2458 |
} else {
|
2459 |
#endif
|
2460 |
VNC_DEBUG("Initializing VNC server with password auth\n");
|
2461 |
vs->auth = VNC_AUTH_VNC; |
2462 |
#ifdef CONFIG_VNC_TLS
|
2463 |
vs->subauth = VNC_AUTH_INVALID; |
2464 |
} |
2465 |
#endif
|
2466 |
} else {
|
2467 |
#ifdef CONFIG_VNC_TLS
|
2468 |
if (tls) {
|
2469 |
vs->auth = VNC_AUTH_VENCRYPT; |
2470 |
if (x509) {
|
2471 |
VNC_DEBUG("Initializing VNC server with x509 no auth\n");
|
2472 |
vs->subauth = VNC_AUTH_VENCRYPT_X509NONE; |
2473 |
} else {
|
2474 |
VNC_DEBUG("Initializing VNC server with TLS no auth\n");
|
2475 |
vs->subauth = VNC_AUTH_VENCRYPT_TLSNONE; |
2476 |
} |
2477 |
} else {
|
2478 |
#endif
|
2479 |
VNC_DEBUG("Initializing VNC server with no auth\n");
|
2480 |
vs->auth = VNC_AUTH_NONE; |
2481 |
#ifdef CONFIG_VNC_TLS
|
2482 |
vs->subauth = VNC_AUTH_INVALID; |
2483 |
} |
2484 |
#endif
|
2485 |
} |
2486 |
|
2487 |
if (reverse) {
|
2488 |
/* connect to viewer */
|
2489 |
if (strncmp(display, "unix:", 5) == 0) |
2490 |
vs->lsock = unix_connect(display+5);
|
2491 |
else
|
2492 |
vs->lsock = inet_connect(display, SOCK_STREAM); |
2493 |
if (-1 == vs->lsock) { |
2494 |
free(vs->display); |
2495 |
vs->display = NULL;
|
2496 |
return -1; |
2497 |
} else {
|
2498 |
vs->csock = vs->lsock; |
2499 |
vs->lsock = -1;
|
2500 |
vnc_connect(vs); |
2501 |
} |
2502 |
return 0; |
2503 |
|
2504 |
} else {
|
2505 |
/* listen for connects */
|
2506 |
char *dpy;
|
2507 |
dpy = qemu_malloc(256);
|
2508 |
if (strncmp(display, "unix:", 5) == 0) { |
2509 |
pstrcpy(dpy, 256, "unix:"); |
2510 |
vs->lsock = unix_listen(display+5, dpy+5, 256-5); |
2511 |
} else {
|
2512 |
vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900); |
2513 |
} |
2514 |
if (-1 == vs->lsock) { |
2515 |
free(dpy); |
2516 |
return -1; |
2517 |
} else {
|
2518 |
free(vs->display); |
2519 |
vs->display = dpy; |
2520 |
} |
2521 |
} |
2522 |
|
2523 |
return qemu_set_fd_handler2(vs->lsock, vnc_listen_poll, vnc_listen_read, NULL, vs); |
2524 |
} |