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tmux/input.c
nicm 322adfbdde Add a get-clipboard option which when enabled (the default is off) uses 
the same mechanism as palette requests to request clipboard from the
terminal and forward to the requesting pane. Remove the now-redundant
forward-to-pane ability from "refresh-client -l". GitHub issue 4275.
2025-12-02 08:20:32 +00:00

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/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <netinet/in.h>
#include <ctype.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "tmux.h"
/*
* Based on the description by Paul Williams at:
*
* https://vt100.net/emu/dec_ansi_parser
*
* With the following changes:
*
* - 7-bit only.
*
* - Support for UTF-8.
*
* - OSC (but not APC) may be terminated by \007 as well as ST.
*
* - A state for APC similar to OSC. Some terminals appear to use this to set
* the title.
*
* - A state for the screen \033k...\033\\ sequence to rename a window. This is
* pretty stupid but not supporting it is more trouble than it is worth.
*
* - Special handling for ESC inside a DCS to allow arbitrary byte sequences to
* be passed to the underlying terminals.
*/
/* Type of terminator. */
enum input_end_type {
INPUT_END_ST,
INPUT_END_BEL
};
/* Request sent by a pane. */
struct input_request {
struct client *c;
struct input_ctx *ictx;
enum input_request_type type;
time_t t;
enum input_end_type end;
int idx;
void *data;
TAILQ_ENTRY(input_request) entry;
TAILQ_ENTRY(input_request) centry;
};
#define INPUT_REQUEST_TIMEOUT 2
/* Input parser cell. */
struct input_cell {
struct grid_cell cell;
int set;
int g0set; /* 1 if ACS */
int g1set; /* 1 if ACS */
};
/* Input parser argument. */
struct input_param {
enum {
INPUT_MISSING,
INPUT_NUMBER,
INPUT_STRING
} type;
union {
int num;
char *str;
};
};
/* Input parser context. */
struct input_ctx {
struct window_pane *wp;
struct bufferevent *event;
struct screen_write_ctx ctx;
struct colour_palette *palette;
struct input_cell cell;
struct input_cell old_cell;
u_int old_cx;
u_int old_cy;
int old_mode;
u_char interm_buf[4];
size_t interm_len;
u_char param_buf[64];
size_t param_len;
#define INPUT_BUF_START 32
u_char *input_buf;
size_t input_len;
size_t input_space;
enum input_end_type input_end;
struct input_param param_list[24];
u_int param_list_len;
struct utf8_data utf8data;
int utf8started;
int ch;
struct utf8_data last;
const struct input_state *state;
int flags;
#define INPUT_DISCARD 0x1
#define INPUT_LAST 0x2
struct input_requests requests;
u_int request_count;
struct event request_timer;
/*
* All input received since we were last in the ground state. Sent to
* control clients on connection.
*/
struct evbuffer *since_ground;
struct event ground_timer;
};
/* Helper functions. */
struct input_transition;
static void input_request_timer_callback(int, short, void *);
static void input_start_request_timer(struct input_ctx *);
static struct input_request *input_make_request(struct input_ctx *,
enum input_request_type);
static void input_free_request(struct input_request *);
static int input_add_request(struct input_ctx *, enum input_request_type,
int);
static int input_split(struct input_ctx *);
static int input_get(struct input_ctx *, u_int, int, int);
static void input_set_state(struct input_ctx *,
const struct input_transition *);
static void input_reset_cell(struct input_ctx *);
static void input_report_current_theme(struct input_ctx *);
static void input_osc_4(struct input_ctx *, const char *);
static void input_osc_8(struct input_ctx *, const char *);
static void input_osc_10(struct input_ctx *, const char *);
static void input_osc_11(struct input_ctx *, const char *);
static void input_osc_12(struct input_ctx *, const char *);
static void input_osc_52(struct input_ctx *, const char *);
static void input_osc_104(struct input_ctx *, const char *);
static void input_osc_110(struct input_ctx *, const char *);
static void input_osc_111(struct input_ctx *, const char *);
static void input_osc_112(struct input_ctx *, const char *);
static void input_osc_133(struct input_ctx *, const char *);
/* Transition entry/exit handlers. */
static void input_clear(struct input_ctx *);
static void input_ground(struct input_ctx *);
static void input_enter_dcs(struct input_ctx *);
static void input_enter_osc(struct input_ctx *);
static void input_exit_osc(struct input_ctx *);
static void input_enter_apc(struct input_ctx *);
static void input_exit_apc(struct input_ctx *);
static void input_enter_rename(struct input_ctx *);
static void input_exit_rename(struct input_ctx *);
/* Input state handlers. */
static int input_print(struct input_ctx *);
static int input_intermediate(struct input_ctx *);
static int input_parameter(struct input_ctx *);
static int input_input(struct input_ctx *);
static int input_c0_dispatch(struct input_ctx *);
static int input_esc_dispatch(struct input_ctx *);
static int input_csi_dispatch(struct input_ctx *);
static void input_csi_dispatch_rm(struct input_ctx *);
static void input_csi_dispatch_rm_private(struct input_ctx *);
static void input_csi_dispatch_sm(struct input_ctx *);
static void input_csi_dispatch_sm_private(struct input_ctx *);
static void input_csi_dispatch_sm_graphics(struct input_ctx *);
static void input_csi_dispatch_winops(struct input_ctx *);
static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
static void input_csi_dispatch_sgr(struct input_ctx *);
static int input_dcs_dispatch(struct input_ctx *);
static int input_top_bit_set(struct input_ctx *);
static int input_end_bel(struct input_ctx *);
/* Command table comparison function. */
static int input_table_compare(const void *, const void *);
/* Command table entry. */
struct input_table_entry {
int ch;
const char *interm;
int type;
};
/* Escape commands. */
enum input_esc_type {
INPUT_ESC_DECALN,
INPUT_ESC_DECKPAM,
INPUT_ESC_DECKPNM,
INPUT_ESC_DECRC,
INPUT_ESC_DECSC,
INPUT_ESC_HTS,
INPUT_ESC_IND,
INPUT_ESC_NEL,
INPUT_ESC_RI,
INPUT_ESC_RIS,
INPUT_ESC_SCSG0_OFF,
INPUT_ESC_SCSG0_ON,
INPUT_ESC_SCSG1_OFF,
INPUT_ESC_SCSG1_ON,
INPUT_ESC_ST
};
/* Escape command table. */
static const struct input_table_entry input_esc_table[] = {
{ '0', "(", INPUT_ESC_SCSG0_ON },
{ '0', ")", INPUT_ESC_SCSG1_ON },
{ '7', "", INPUT_ESC_DECSC },
{ '8', "", INPUT_ESC_DECRC },
{ '8', "#", INPUT_ESC_DECALN },
{ '=', "", INPUT_ESC_DECKPAM },
{ '>', "", INPUT_ESC_DECKPNM },
{ 'B', "(", INPUT_ESC_SCSG0_OFF },
{ 'B', ")", INPUT_ESC_SCSG1_OFF },
{ 'D', "", INPUT_ESC_IND },
{ 'E', "", INPUT_ESC_NEL },
{ 'H', "", INPUT_ESC_HTS },
{ 'M', "", INPUT_ESC_RI },
{ '\\', "", INPUT_ESC_ST },
{ 'c', "", INPUT_ESC_RIS },
};
/* Control (CSI) commands. */
enum input_csi_type {
INPUT_CSI_CBT,
INPUT_CSI_CNL,
INPUT_CSI_CPL,
INPUT_CSI_CUB,
INPUT_CSI_CUD,
INPUT_CSI_CUF,
INPUT_CSI_CUP,
INPUT_CSI_CUU,
INPUT_CSI_DA,
INPUT_CSI_DA_TWO,
INPUT_CSI_DCH,
INPUT_CSI_DECSCUSR,
INPUT_CSI_DECSTBM,
INPUT_CSI_DL,
INPUT_CSI_DSR,
INPUT_CSI_DSR_PRIVATE,
INPUT_CSI_ECH,
INPUT_CSI_ED,
INPUT_CSI_EL,
INPUT_CSI_HPA,
INPUT_CSI_ICH,
INPUT_CSI_IL,
INPUT_CSI_MODOFF,
INPUT_CSI_MODSET,
INPUT_CSI_QUERY_PRIVATE,
INPUT_CSI_RCP,
INPUT_CSI_REP,
INPUT_CSI_RM,
INPUT_CSI_RM_PRIVATE,
INPUT_CSI_SCP,
INPUT_CSI_SD,
INPUT_CSI_SGR,
INPUT_CSI_SM,
INPUT_CSI_SM_GRAPHICS,
INPUT_CSI_SM_PRIVATE,
INPUT_CSI_SU,
INPUT_CSI_TBC,
INPUT_CSI_VPA,
INPUT_CSI_WINOPS,
INPUT_CSI_XDA
};
/* Control (CSI) command table. */
static const struct input_table_entry input_csi_table[] = {
{ '@', "", INPUT_CSI_ICH },
{ 'A', "", INPUT_CSI_CUU },
{ 'B', "", INPUT_CSI_CUD },
{ 'C', "", INPUT_CSI_CUF },
{ 'D', "", INPUT_CSI_CUB },
{ 'E', "", INPUT_CSI_CNL },
{ 'F', "", INPUT_CSI_CPL },
{ 'G', "", INPUT_CSI_HPA },
{ 'H', "", INPUT_CSI_CUP },
{ 'J', "", INPUT_CSI_ED },
{ 'K', "", INPUT_CSI_EL },
{ 'L', "", INPUT_CSI_IL },
{ 'M', "", INPUT_CSI_DL },
{ 'P', "", INPUT_CSI_DCH },
{ 'S', "", INPUT_CSI_SU },
{ 'S', "?", INPUT_CSI_SM_GRAPHICS },
{ 'T', "", INPUT_CSI_SD },
{ 'X', "", INPUT_CSI_ECH },
{ 'Z', "", INPUT_CSI_CBT },
{ '`', "", INPUT_CSI_HPA },
{ 'b', "", INPUT_CSI_REP },
{ 'c', "", INPUT_CSI_DA },
{ 'c', ">", INPUT_CSI_DA_TWO },
{ 'd', "", INPUT_CSI_VPA },
{ 'f', "", INPUT_CSI_CUP },
{ 'g', "", INPUT_CSI_TBC },
{ 'h', "", INPUT_CSI_SM },
{ 'h', "?", INPUT_CSI_SM_PRIVATE },
{ 'l', "", INPUT_CSI_RM },
{ 'l', "?", INPUT_CSI_RM_PRIVATE },
{ 'm', "", INPUT_CSI_SGR },
{ 'm', ">", INPUT_CSI_MODSET },
{ 'n', "", INPUT_CSI_DSR },
{ 'n', ">", INPUT_CSI_MODOFF },
{ 'n', "?", INPUT_CSI_DSR_PRIVATE },
{ 'p', "?$", INPUT_CSI_QUERY_PRIVATE },
{ 'q', " ", INPUT_CSI_DECSCUSR },
{ 'q', ">", INPUT_CSI_XDA },
{ 'r', "", INPUT_CSI_DECSTBM },
{ 's', "", INPUT_CSI_SCP },
{ 't', "", INPUT_CSI_WINOPS },
{ 'u', "", INPUT_CSI_RCP }
};
/* Input transition. */
struct input_transition {
int first;
int last;
int (*handler)(struct input_ctx *);
const struct input_state *state;
};
/* Input state. */
struct input_state {
const char *name;
void (*enter)(struct input_ctx *);
void (*exit)(struct input_ctx *);
const struct input_transition *transitions;
};
/* State transitions available from all states. */
#define INPUT_STATE_ANYWHERE \
{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
{ 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
{ 0x1b, 0x1b, NULL, &input_state_esc_enter }
/* Forward declarations of state tables. */
static const struct input_transition input_state_ground_table[];
static const struct input_transition input_state_esc_enter_table[];
static const struct input_transition input_state_esc_intermediate_table[];
static const struct input_transition input_state_csi_enter_table[];
static const struct input_transition input_state_csi_parameter_table[];
static const struct input_transition input_state_csi_intermediate_table[];
static const struct input_transition input_state_csi_ignore_table[];
static const struct input_transition input_state_dcs_enter_table[];
static const struct input_transition input_state_dcs_parameter_table[];
static const struct input_transition input_state_dcs_intermediate_table[];
static const struct input_transition input_state_dcs_handler_table[];
static const struct input_transition input_state_dcs_escape_table[];
static const struct input_transition input_state_dcs_ignore_table[];
static const struct input_transition input_state_osc_string_table[];
static const struct input_transition input_state_apc_string_table[];
static const struct input_transition input_state_rename_string_table[];
static const struct input_transition input_state_consume_st_table[];
/* ground state definition. */
static const struct input_state input_state_ground = {
"ground",
input_ground, NULL,
input_state_ground_table
};
/* esc_enter state definition. */
static const struct input_state input_state_esc_enter = {
"esc_enter",
input_clear, NULL,
input_state_esc_enter_table
};
/* esc_intermediate state definition. */
static const struct input_state input_state_esc_intermediate = {
"esc_intermediate",
NULL, NULL,
input_state_esc_intermediate_table
};
/* csi_enter state definition. */
static const struct input_state input_state_csi_enter = {
"csi_enter",
input_clear, NULL,
input_state_csi_enter_table
};
/* csi_parameter state definition. */
static const struct input_state input_state_csi_parameter = {
"csi_parameter",
NULL, NULL,
input_state_csi_parameter_table
};
/* csi_intermediate state definition. */
static const struct input_state input_state_csi_intermediate = {
"csi_intermediate",
NULL, NULL,
input_state_csi_intermediate_table
};
/* csi_ignore state definition. */
static const struct input_state input_state_csi_ignore = {
"csi_ignore",
NULL, NULL,
input_state_csi_ignore_table
};
/* dcs_enter state definition. */
static const struct input_state input_state_dcs_enter = {
"dcs_enter",
input_enter_dcs, NULL,
input_state_dcs_enter_table
};
/* dcs_parameter state definition. */
static const struct input_state input_state_dcs_parameter = {
"dcs_parameter",
NULL, NULL,
input_state_dcs_parameter_table
};
/* dcs_intermediate state definition. */
static const struct input_state input_state_dcs_intermediate = {
"dcs_intermediate",
NULL, NULL,
input_state_dcs_intermediate_table
};
/* dcs_handler state definition. */
static const struct input_state input_state_dcs_handler = {
"dcs_handler",
NULL, NULL,
input_state_dcs_handler_table
};
/* dcs_escape state definition. */
static const struct input_state input_state_dcs_escape = {
"dcs_escape",
NULL, NULL,
input_state_dcs_escape_table
};
/* dcs_ignore state definition. */
static const struct input_state input_state_dcs_ignore = {
"dcs_ignore",
NULL, NULL,
input_state_dcs_ignore_table
};
/* osc_string state definition. */
static const struct input_state input_state_osc_string = {
"osc_string",
input_enter_osc, input_exit_osc,
input_state_osc_string_table
};
/* apc_string state definition. */
static const struct input_state input_state_apc_string = {
"apc_string",
input_enter_apc, input_exit_apc,
input_state_apc_string_table
};
/* rename_string state definition. */
static const struct input_state input_state_rename_string = {
"rename_string",
input_enter_rename, input_exit_rename,
input_state_rename_string_table
};
/* consume_st state definition. */
static const struct input_state input_state_consume_st = {
"consume_st",
input_enter_rename, NULL, /* rename also waits for ST */
input_state_consume_st_table
};
/* ground state table. */
static const struct input_transition input_state_ground_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, input_c0_dispatch, NULL },
{ 0x19, 0x19, input_c0_dispatch, NULL },
{ 0x1c, 0x1f, input_c0_dispatch, NULL },
{ 0x20, 0x7e, input_print, NULL },
{ 0x7f, 0x7f, NULL, NULL },
{ 0x80, 0xff, input_top_bit_set, NULL },
{ -1, -1, NULL, NULL }
};
/* esc_enter state table. */
static const struct input_transition input_state_esc_enter_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, input_c0_dispatch, NULL },
{ 0x19, 0x19, input_c0_dispatch, NULL },
{ 0x1c, 0x1f, input_c0_dispatch, NULL },
{ 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
{ 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
{ 0x50, 0x50, NULL, &input_state_dcs_enter },
{ 0x51, 0x57, input_esc_dispatch, &input_state_ground },
{ 0x58, 0x58, NULL, &input_state_consume_st },
{ 0x59, 0x59, input_esc_dispatch, &input_state_ground },
{ 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
{ 0x5b, 0x5b, NULL, &input_state_csi_enter },
{ 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
{ 0x5d, 0x5d, NULL, &input_state_osc_string },
{ 0x5e, 0x5e, NULL, &input_state_consume_st },
{ 0x5f, 0x5f, NULL, &input_state_apc_string },
{ 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
{ 0x6b, 0x6b, NULL, &input_state_rename_string },
{ 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* esc_intermediate state table. */
static const struct input_transition input_state_esc_intermediate_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, input_c0_dispatch, NULL },
{ 0x19, 0x19, input_c0_dispatch, NULL },
{ 0x1c, 0x1f, input_c0_dispatch, NULL },
{ 0x20, 0x2f, input_intermediate, NULL },
{ 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* csi_enter state table. */
static const struct input_transition input_state_csi_enter_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, input_c0_dispatch, NULL },
{ 0x19, 0x19, input_c0_dispatch, NULL },
{ 0x1c, 0x1f, input_c0_dispatch, NULL },
{ 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
{ 0x30, 0x39, input_parameter, &input_state_csi_parameter },
{ 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
{ 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
{ 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
{ 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* csi_parameter state table. */
static const struct input_transition input_state_csi_parameter_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, input_c0_dispatch, NULL },
{ 0x19, 0x19, input_c0_dispatch, NULL },
{ 0x1c, 0x1f, input_c0_dispatch, NULL },
{ 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
{ 0x30, 0x39, input_parameter, NULL },
{ 0x3a, 0x3a, input_parameter, NULL },
{ 0x3b, 0x3b, input_parameter, NULL },
{ 0x3c, 0x3f, NULL, &input_state_csi_ignore },
{ 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* csi_intermediate state table. */
static const struct input_transition input_state_csi_intermediate_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, input_c0_dispatch, NULL },
{ 0x19, 0x19, input_c0_dispatch, NULL },
{ 0x1c, 0x1f, input_c0_dispatch, NULL },
{ 0x20, 0x2f, input_intermediate, NULL },
{ 0x30, 0x3f, NULL, &input_state_csi_ignore },
{ 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* csi_ignore state table. */
static const struct input_transition input_state_csi_ignore_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, input_c0_dispatch, NULL },
{ 0x19, 0x19, input_c0_dispatch, NULL },
{ 0x1c, 0x1f, input_c0_dispatch, NULL },
{ 0x20, 0x3f, NULL, NULL },
{ 0x40, 0x7e, NULL, &input_state_ground },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* dcs_enter state table. */
static const struct input_transition input_state_dcs_enter_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
{ 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
{ 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
{ 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
{ 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
{ 0x40, 0x7e, input_input, &input_state_dcs_handler },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* dcs_parameter state table. */
static const struct input_transition input_state_dcs_parameter_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
{ 0x30, 0x39, input_parameter, NULL },
{ 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
{ 0x3b, 0x3b, input_parameter, NULL },
{ 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
{ 0x40, 0x7e, input_input, &input_state_dcs_handler },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* dcs_intermediate state table. */
static const struct input_transition input_state_dcs_intermediate_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0x2f, input_intermediate, NULL },
{ 0x30, 0x3f, NULL, &input_state_dcs_ignore },
{ 0x40, 0x7e, input_input, &input_state_dcs_handler },
{ 0x7f, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* dcs_handler state table. */
static const struct input_transition input_state_dcs_handler_table[] = {
/* No INPUT_STATE_ANYWHERE */
{ 0x00, 0x1a, input_input, NULL },
{ 0x1b, 0x1b, NULL, &input_state_dcs_escape },
{ 0x1c, 0xff, input_input, NULL },
{ -1, -1, NULL, NULL }
};
/* dcs_escape state table. */
static const struct input_transition input_state_dcs_escape_table[] = {
/* No INPUT_STATE_ANYWHERE */
{ 0x00, 0x5b, input_input, &input_state_dcs_handler },
{ 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
{ 0x5d, 0xff, input_input, &input_state_dcs_handler },
{ -1, -1, NULL, NULL }
};
/* dcs_ignore state table. */
static const struct input_transition input_state_dcs_ignore_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* osc_string state table. */
static const struct input_transition input_state_osc_string_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x06, NULL, NULL },
{ 0x07, 0x07, input_end_bel, &input_state_ground },
{ 0x08, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0xff, input_input, NULL },
{ -1, -1, NULL, NULL }
};
/* apc_string state table. */
static const struct input_transition input_state_apc_string_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0xff, input_input, NULL },
{ -1, -1, NULL, NULL }
};
/* rename_string state table. */
static const struct input_transition input_state_rename_string_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0xff, input_input, NULL },
{ -1, -1, NULL, NULL }
};
/* consume_st state table. */
static const struct input_transition input_state_consume_st_table[] = {
INPUT_STATE_ANYWHERE,
{ 0x00, 0x17, NULL, NULL },
{ 0x19, 0x19, NULL, NULL },
{ 0x1c, 0x1f, NULL, NULL },
{ 0x20, 0xff, NULL, NULL },
{ -1, -1, NULL, NULL }
};
/* Maximum of bytes allowed to read in a single input. */
static size_t input_buffer_size = INPUT_BUF_DEFAULT_SIZE;
/* Input table compare. */
static int
input_table_compare(const void *key, const void *value)
{
const struct input_ctx *ictx = key;
const struct input_table_entry *entry = value;
if (ictx->ch != entry->ch)
return (ictx->ch - entry->ch);
return (strcmp(ictx->interm_buf, entry->interm));
}
/* Stop UTF-8 and enter an invalid character. */
static void
input_stop_utf8(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
static struct utf8_data rc = { "\357\277\275", 3, 3, 1 };
if (ictx->utf8started) {
utf8_copy(&ictx->cell.cell.data, &rc);
screen_write_collect_add(sctx, &ictx->cell.cell);
}
ictx->utf8started = 0;
}
/*
* Timer - if this expires then have been waiting for a terminator for too
* long, so reset to ground.
*/
static void
input_ground_timer_callback(__unused int fd, __unused short events, void *arg)
{
struct input_ctx *ictx = arg;
log_debug("%s: %s expired" , __func__, ictx->state->name);
input_reset(ictx, 0);
}
/* Start the timer. */
static void
input_start_ground_timer(struct input_ctx *ictx)
{
struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
event_del(&ictx->ground_timer);
event_add(&ictx->ground_timer, &tv);
}
/* Reset cell state to default. */
static void
input_reset_cell(struct input_ctx *ictx)
{
memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
ictx->cell.set = 0;
ictx->cell.g0set = ictx->cell.g1set = 0;
memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
ictx->old_cx = 0;
ictx->old_cy = 0;
}
/* Save screen state. */
static void
input_save_state(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct screen *s = sctx->s;
memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
ictx->old_cx = s->cx;
ictx->old_cy = s->cy;
ictx->old_mode = s->mode;
}
/* Restore screen state. */
static void
input_restore_state(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
if (ictx->old_mode & MODE_ORIGIN)
screen_write_mode_set(sctx, MODE_ORIGIN);
else
screen_write_mode_clear(sctx, MODE_ORIGIN);
screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
}
/* Initialise input parser. */
struct input_ctx *
input_init(struct window_pane *wp, struct bufferevent *bev,
struct colour_palette *palette)
{
struct input_ctx *ictx;
ictx = xcalloc(1, sizeof *ictx);
ictx->wp = wp;
ictx->event = bev;
ictx->palette = palette;
ictx->input_space = INPUT_BUF_START;
ictx->input_buf = xmalloc(INPUT_BUF_START);
ictx->since_ground = evbuffer_new();
if (ictx->since_ground == NULL)
fatalx("out of memory");
evtimer_set(&ictx->ground_timer, input_ground_timer_callback, ictx);
TAILQ_INIT(&ictx->requests);
evtimer_set(&ictx->request_timer, input_request_timer_callback, ictx);
input_reset(ictx, 0);
return (ictx);
}
/* Destroy input parser. */
void
input_free(struct input_ctx *ictx)
{
struct input_request *ir, *ir1;
u_int i;
for (i = 0; i < ictx->param_list_len; i++) {
if (ictx->param_list[i].type == INPUT_STRING)
free(ictx->param_list[i].str);
}
TAILQ_FOREACH_SAFE(ir, &ictx->requests, entry, ir1)
input_free_request(ir);
event_del(&ictx->request_timer);
free(ictx->input_buf);
evbuffer_free(ictx->since_ground);
event_del(&ictx->ground_timer);
free(ictx);
}
/* Reset input state and clear screen. */
void
input_reset(struct input_ctx *ictx, int clear)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct window_pane *wp = ictx->wp;
input_reset_cell(ictx);
if (clear && wp != NULL) {
if (TAILQ_EMPTY(&wp->modes))
screen_write_start_pane(sctx, wp, &wp->base);
else
screen_write_start(sctx, &wp->base);
screen_write_reset(sctx);
screen_write_stop(sctx);
}
input_clear(ictx);
ictx->state = &input_state_ground;
ictx->flags = 0;
}
/* Return pending data. */
struct evbuffer *
input_pending(struct input_ctx *ictx)
{
return (ictx->since_ground);
}
/* Change input state. */
static void
input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
{
if (ictx->state->exit != NULL)
ictx->state->exit(ictx);
ictx->state = itr->state;
if (ictx->state->enter != NULL)
ictx->state->enter(ictx);
}
/* Parse data. */
static void
input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
{
struct screen_write_ctx *sctx = &ictx->ctx;
const struct input_state *state = NULL;
const struct input_transition *itr = NULL;
size_t off = 0;
/* Parse the input. */
while (off < len) {
ictx->ch = buf[off++];
/* Find the transition. */
if (ictx->state != state ||
itr == NULL ||
ictx->ch < itr->first ||
ictx->ch > itr->last) {
itr = ictx->state->transitions;
while (itr->first != -1 && itr->last != -1) {
if (ictx->ch >= itr->first &&
ictx->ch <= itr->last)
break;
itr++;
}
if (itr->first == -1 || itr->last == -1) {
/* No transition? Eh? */
fatalx("no transition from state");
}
}
state = ictx->state;
/*
* Any state except print stops the current collection. This is
* an optimization to avoid checking if the attributes have
* changed for every character. It will stop unnecessarily for
* sequences that don't make a terminal change, but they should
* be the minority.
*/
if (itr->handler != input_print)
screen_write_collect_end(sctx);
/*
* Execute the handler, if any. Don't switch state if it
* returns non-zero.
*/
if (itr->handler != NULL && itr->handler(ictx) != 0)
continue;
/* And switch state, if necessary. */
if (itr->state != NULL)
input_set_state(ictx, itr);
/* If not in ground state, save input. */
if (ictx->state != &input_state_ground)
evbuffer_add(ictx->since_ground, &ictx->ch, 1);
}
}
/* Parse input from pane. */
void
input_parse_pane(struct window_pane *wp)
{
void *new_data;
size_t new_size;
new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
input_parse_buffer(wp, new_data, new_size);
window_pane_update_used_data(wp, &wp->offset, new_size);
}
/* Parse given input. */
void
input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
{
struct input_ctx *ictx = wp->ictx;
struct screen_write_ctx *sctx = &ictx->ctx;
if (len == 0)
return;
window_update_activity(wp->window);
wp->flags |= PANE_CHANGED;
/* Flag new input while in a mode. */
if (!TAILQ_EMPTY(&wp->modes))
wp->flags |= PANE_UNSEENCHANGES;
/* NULL wp if there is a mode set as don't want to update the tty. */
if (TAILQ_EMPTY(&wp->modes))
screen_write_start_pane(sctx, wp, &wp->base);
else
screen_write_start(sctx, &wp->base);
log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
ictx->state->name, len, (int)len, buf);
input_parse(ictx, buf, len);
screen_write_stop(sctx);
}
/* Parse given input for screen. */
void
input_parse_screen(struct input_ctx *ictx, struct screen *s,
screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
{
struct screen_write_ctx *sctx = &ictx->ctx;
if (len == 0)
return;
screen_write_start_callback(sctx, s, cb, arg);
input_parse(ictx, buf, len);
screen_write_stop(sctx);
}
/* Split the parameter list (if any). */
static int
input_split(struct input_ctx *ictx)
{
const char *errstr;
char *ptr, *out;
struct input_param *ip;
u_int i;
for (i = 0; i < ictx->param_list_len; i++) {
if (ictx->param_list[i].type == INPUT_STRING)
free(ictx->param_list[i].str);
}
ictx->param_list_len = 0;
if (ictx->param_len == 0)
return (0);
ip = &ictx->param_list[0];
ptr = ictx->param_buf;
while ((out = strsep(&ptr, ";")) != NULL) {
if (*out == '\0')
ip->type = INPUT_MISSING;
else {
if (strchr(out, ':') != NULL) {
ip->type = INPUT_STRING;
ip->str = xstrdup(out);
} else {
ip->type = INPUT_NUMBER;
ip->num = strtonum(out, 0, INT_MAX, &errstr);
if (errstr != NULL)
return (-1);
}
}
ip = &ictx->param_list[++ictx->param_list_len];
if (ictx->param_list_len == nitems(ictx->param_list))
return (-1);
}
for (i = 0; i < ictx->param_list_len; i++) {
ip = &ictx->param_list[i];
if (ip->type == INPUT_MISSING)
log_debug("parameter %u: missing", i);
else if (ip->type == INPUT_STRING)
log_debug("parameter %u: string %s", i, ip->str);
else if (ip->type == INPUT_NUMBER)
log_debug("parameter %u: number %d", i, ip->num);
}
return (0);
}
/* Get an argument or return default value. */
static int
input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
{
struct input_param *ip;
int retval;
if (validx >= ictx->param_list_len)
return (defval);
ip = &ictx->param_list[validx];
if (ip->type == INPUT_MISSING)
return (defval);
if (ip->type == INPUT_STRING)
return (-1);
retval = ip->num;
if (retval < minval)
return (minval);
return (retval);
}
/* Send reply. */
static void
input_send_reply(struct input_ctx *ictx, const char *reply)
{
struct bufferevent *bev = ictx->event;
if (bev != NULL) {
log_debug("%s: %s", __func__, reply);
bufferevent_write(bev, reply, strlen(reply));
}
}
/* Reply to terminal query. */
static void printflike(3, 4)
input_reply(struct input_ctx *ictx, int add, const char *fmt, ...)
{
struct input_request *ir;
va_list ap;
char *reply;
va_start(ap, fmt);
xvasprintf(&reply, fmt, ap);
va_end(ap);
if (add && !TAILQ_EMPTY(&ictx->requests)) {
ir = input_make_request(ictx, INPUT_REQUEST_QUEUE);
ir->data = reply;
} else {
input_send_reply(ictx, reply);
free(reply);
}
}
/* Clear saved state. */
static void
input_clear(struct input_ctx *ictx)
{
event_del(&ictx->ground_timer);
*ictx->interm_buf = '\0';
ictx->interm_len = 0;
*ictx->param_buf = '\0';
ictx->param_len = 0;
*ictx->input_buf = '\0';
ictx->input_len = 0;
ictx->input_end = INPUT_END_ST;
ictx->flags &= ~INPUT_DISCARD;
}
/* Reset for ground state. */
static void
input_ground(struct input_ctx *ictx)
{
event_del(&ictx->ground_timer);
evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
if (ictx->input_space > INPUT_BUF_START) {
ictx->input_space = INPUT_BUF_START;
ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
}
}
/* Output this character to the screen. */
static int
input_print(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
int set;
input_stop_utf8(ictx); /* can't be valid UTF-8 */
set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
if (set == 1)
ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
else
ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
utf8_set(&ictx->cell.cell.data, ictx->ch);
screen_write_collect_add(sctx, &ictx->cell.cell);
utf8_copy(&ictx->last, &ictx->cell.cell.data);
ictx->flags |= INPUT_LAST;
ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
return (0);
}
/* Collect intermediate string. */
static int
input_intermediate(struct input_ctx *ictx)
{
if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
ictx->flags |= INPUT_DISCARD;
else {
ictx->interm_buf[ictx->interm_len++] = ictx->ch;
ictx->interm_buf[ictx->interm_len] = '\0';
}
return (0);
}
/* Collect parameter string. */
static int
input_parameter(struct input_ctx *ictx)
{
if (ictx->param_len == (sizeof ictx->param_buf) - 1)
ictx->flags |= INPUT_DISCARD;
else {
ictx->param_buf[ictx->param_len++] = ictx->ch;
ictx->param_buf[ictx->param_len] = '\0';
}
return (0);
}
/* Collect input string. */
static int
input_input(struct input_ctx *ictx)
{
size_t available;
available = ictx->input_space;
while (ictx->input_len + 1 >= available) {
available *= 2;
if (available > input_buffer_size) {
ictx->flags |= INPUT_DISCARD;
return (0);
}
ictx->input_buf = xrealloc(ictx->input_buf, available);
ictx->input_space = available;
}
ictx->input_buf[ictx->input_len++] = ictx->ch;
ictx->input_buf[ictx->input_len] = '\0';
return (0);
}
/* Execute C0 control sequence. */
static int
input_c0_dispatch(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct window_pane *wp = ictx->wp;
struct screen *s = sctx->s;
struct grid_cell gc, first_gc;
u_int cx, line;
u_int width;
int has_content = 0;
input_stop_utf8(ictx); /* can't be valid UTF-8 */
log_debug("%s: '%c'", __func__, ictx->ch);
switch (ictx->ch) {
case '\000': /* NUL */
break;
case '\007': /* BEL */
if (wp != NULL)
alerts_queue(wp->window, WINDOW_BELL);
break;
case '\010': /* BS */
screen_write_backspace(sctx);
break;
case '\011': /* HT */
/* Don't tab beyond the end of the line. */
cx = s->cx;
if (cx >= screen_size_x(s) - 1)
break;
/* Find the next tab point, or use the last column if none. */
line = s->cy + s->grid->hsize;
grid_get_cell(s->grid, cx, line, &first_gc);
do {
if (!has_content) {
grid_get_cell(s->grid, cx, line, &gc);
if (gc.data.size != 1 ||
*gc.data.data != ' ' ||
!grid_cells_look_equal(&gc, &first_gc))
has_content = 1;
}
cx++;
if (bit_test(s->tabs, cx))
break;
} while (cx < screen_size_x(s) - 1);
width = cx - s->cx;
if (has_content || width > sizeof gc.data.data)
s->cx = cx;
else {
grid_get_cell(s->grid, s->cx, line, &gc);
grid_set_tab(&gc, width);
screen_write_collect_add(sctx, &gc);
}
break;
case '\012': /* LF */
case '\013': /* VT */
case '\014': /* FF */
screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
if (s->mode & MODE_CRLF)
screen_write_carriagereturn(sctx);
break;
case '\015': /* CR */
screen_write_carriagereturn(sctx);
break;
case '\016': /* SO */
ictx->cell.set = 1;
break;
case '\017': /* SI */
ictx->cell.set = 0;
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
ictx->flags &= ~INPUT_LAST;
return (0);
}
/* Execute escape sequence. */
static int
input_esc_dispatch(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct screen *s = sctx->s;
struct input_table_entry *entry;
if (ictx->flags & INPUT_DISCARD)
return (0);
log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
sizeof input_esc_table[0], input_table_compare);
if (entry == NULL) {
log_debug("%s: unknown '%c'", __func__, ictx->ch);
return (0);
}
switch (entry->type) {
case INPUT_ESC_RIS:
colour_palette_clear(ictx->palette);
input_reset_cell(ictx);
screen_write_reset(sctx);
screen_write_fullredraw(sctx);
break;
case INPUT_ESC_IND:
screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
break;
case INPUT_ESC_NEL:
screen_write_carriagereturn(sctx);
screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
break;
case INPUT_ESC_HTS:
if (s->cx < screen_size_x(s))
bit_set(s->tabs, s->cx);
break;
case INPUT_ESC_RI:
screen_write_reverseindex(sctx, ictx->cell.cell.bg);
break;
case INPUT_ESC_DECKPAM:
screen_write_mode_set(sctx, MODE_KKEYPAD);
break;
case INPUT_ESC_DECKPNM:
screen_write_mode_clear(sctx, MODE_KKEYPAD);
break;
case INPUT_ESC_DECSC:
input_save_state(ictx);
break;
case INPUT_ESC_DECRC:
input_restore_state(ictx);
break;
case INPUT_ESC_DECALN:
screen_write_alignmenttest(sctx);
break;
case INPUT_ESC_SCSG0_ON:
ictx->cell.g0set = 1;
break;
case INPUT_ESC_SCSG0_OFF:
ictx->cell.g0set = 0;
break;
case INPUT_ESC_SCSG1_ON:
ictx->cell.g1set = 1;
break;
case INPUT_ESC_SCSG1_OFF:
ictx->cell.g1set = 0;
break;
case INPUT_ESC_ST:
/* ST terminates OSC but the state transition already did it. */
break;
}
ictx->flags &= ~INPUT_LAST;
return (0);
}
/* Execute control sequence. */
static int
input_csi_dispatch(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct screen *s = sctx->s;
struct input_table_entry *entry;
struct options *oo;
int i, n, m, ek, set, p;
u_int cx, bg = ictx->cell.cell.bg;
if (ictx->flags & INPUT_DISCARD)
return (0);
log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch,
ictx->interm_buf, ictx->param_buf);
if (input_split(ictx) != 0)
return (0);
entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
sizeof input_csi_table[0], input_table_compare);
if (entry == NULL) {
log_debug("%s: unknown '%c'", __func__, ictx->ch);
return (0);
}
switch (entry->type) {
case INPUT_CSI_CBT:
/* Find the previous tab point, n times. */
cx = s->cx;
if (cx > screen_size_x(s) - 1)
cx = screen_size_x(s) - 1;
n = input_get(ictx, 0, 1, 1);
if (n == -1)
break;
while (cx > 0 && n-- > 0) {
do
cx--;
while (cx > 0 && !bit_test(s->tabs, cx));
}
s->cx = cx;
break;
case INPUT_CSI_CUB:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_cursorleft(sctx, n);
break;
case INPUT_CSI_CUD:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_cursordown(sctx, n);
break;
case INPUT_CSI_CUF:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_cursorright(sctx, n);
break;
case INPUT_CSI_CUP:
n = input_get(ictx, 0, 1, 1);
m = input_get(ictx, 1, 1, 1);
if (n != -1 && m != -1)
screen_write_cursormove(sctx, m - 1, n - 1, 1);
break;
case INPUT_CSI_MODSET:
n = input_get(ictx, 0, 0, 0);
if (n != 4)
break;
m = input_get(ictx, 1, 0, 0);
/*
* Set the extended key reporting mode as per the client
* request, unless "extended-keys" is set to "off".
*/
ek = options_get_number(global_options, "extended-keys");
if (ek == 0)
break;
screen_write_mode_clear(sctx, EXTENDED_KEY_MODES);
if (m == 2)
screen_write_mode_set(sctx, MODE_KEYS_EXTENDED_2);
else if (m == 1 || ek == 2)
screen_write_mode_set(sctx, MODE_KEYS_EXTENDED);
break;
case INPUT_CSI_MODOFF:
n = input_get(ictx, 0, 0, 0);
if (n != 4)
break;
/*
* Clear the extended key reporting mode as per the client
* request, unless "extended-keys always" forces into mode 1.
*/
screen_write_mode_clear(sctx,
MODE_KEYS_EXTENDED|MODE_KEYS_EXTENDED_2);
if (options_get_number(global_options, "extended-keys") == 2)
screen_write_mode_set(sctx, MODE_KEYS_EXTENDED);
break;
case INPUT_CSI_WINOPS:
input_csi_dispatch_winops(ictx);
break;
case INPUT_CSI_CUU:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_cursorup(sctx, n);
break;
case INPUT_CSI_CNL:
n = input_get(ictx, 0, 1, 1);
if (n != -1) {
screen_write_carriagereturn(sctx);
screen_write_cursordown(sctx, n);
}
break;
case INPUT_CSI_CPL:
n = input_get(ictx, 0, 1, 1);
if (n != -1) {
screen_write_carriagereturn(sctx);
screen_write_cursorup(sctx, n);
}
break;
case INPUT_CSI_DA:
switch (input_get(ictx, 0, 0, 0)) {
case -1:
break;
case 0:
input_reply(ictx, 1, "\033[?1;2c");
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
break;
case INPUT_CSI_DA_TWO:
switch (input_get(ictx, 0, 0, 0)) {
case -1:
break;
case 0:
input_reply(ictx, 1, "\033[>84;0;0c");
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
break;
case INPUT_CSI_ECH:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_clearcharacter(sctx, n, bg);
break;
case INPUT_CSI_DCH:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_deletecharacter(sctx, n, bg);
break;
case INPUT_CSI_DECSTBM:
n = input_get(ictx, 0, 1, 1);
m = input_get(ictx, 1, 1, screen_size_y(s));
if (n != -1 && m != -1)
screen_write_scrollregion(sctx, n - 1, m - 1);
break;
case INPUT_CSI_DL:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_deleteline(sctx, n, bg);
break;
case INPUT_CSI_DSR_PRIVATE:
switch (input_get(ictx, 0, 0, 0)) {
case 996:
input_report_current_theme(ictx);
break;
}
break;
case INPUT_CSI_QUERY_PRIVATE:
switch (input_get(ictx, 0, 0, 0)) {
case 12: /* cursor blink: 1 = blink, 2 = steady */
if (s->cstyle != SCREEN_CURSOR_DEFAULT ||
s->mode & MODE_CURSOR_BLINKING_SET)
n = (s->mode & MODE_CURSOR_BLINKING) ? 1 : 2;
else {
if (ictx->wp != NULL)
oo = ictx->wp->options;
else
oo = global_options;
p = options_get_number(oo, "cursor-style");
/* blink for 1,3,5; steady for 0,2,4,6 */
n = (p == 1 || p == 3 || p == 5) ? 1 : 2;
}
input_reply(ictx, 1, "\033[?12;%d$y", n);
break;
case 2004: /* bracketed paste */
n = (s->mode & MODE_BRACKETPASTE) ? 1 : 2;
input_reply(ictx, 1, "\033[?2004;%d$y", n);
break;
case 1004: /* focus reporting */
n = (s->mode & MODE_FOCUSON) ? 1 : 2;
input_reply(ictx, 1, "\033[?1004;%d$y", n);
break;
case 1006: /* SGR mouse */
n = (s->mode & MODE_MOUSE_SGR) ? 1 : 2;
input_reply(ictx, 1, "\033[?1006;%d$y", n);
break;
case 2031:
input_reply(ictx, 1, "\033[?2031;2$y");
break;
}
break;
case INPUT_CSI_DSR:
switch (input_get(ictx, 0, 0, 0)) {
case -1:
break;
case 5:
input_reply(ictx, 1, "\033[0n");
break;
case 6:
input_reply(ictx, 1, "\033[%u;%uR", s->cy + 1,
s->cx + 1);
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
break;
case INPUT_CSI_ED:
switch (input_get(ictx, 0, 0, 0)) {
case -1:
break;
case 0:
screen_write_clearendofscreen(sctx, bg);
break;
case 1:
screen_write_clearstartofscreen(sctx, bg);
break;
case 2:
screen_write_clearscreen(sctx, bg);
break;
case 3:
if (input_get(ictx, 1, 0, 0) == 0) {
/*
* Linux console extension to clear history
* (for example before locking the screen).
*/
screen_write_clearhistory(sctx);
}
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
break;
case INPUT_CSI_EL:
switch (input_get(ictx, 0, 0, 0)) {
case -1:
break;
case 0:
screen_write_clearendofline(sctx, bg);
break;
case 1:
screen_write_clearstartofline(sctx, bg);
break;
case 2:
screen_write_clearline(sctx, bg);
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
break;
case INPUT_CSI_HPA:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_cursormove(sctx, n - 1, -1, 1);
break;
case INPUT_CSI_ICH:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_insertcharacter(sctx, n, bg);
break;
case INPUT_CSI_IL:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_insertline(sctx, n, bg);
break;
case INPUT_CSI_REP:
n = input_get(ictx, 0, 1, 1);
if (n == -1)
break;
m = screen_size_x(s) - s->cx;
if (n > m)
n = m;
if (~ictx->flags & INPUT_LAST)
break;
set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
if (set == 1)
ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
else
ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
utf8_copy(&ictx->cell.cell.data, &ictx->last);
for (i = 0; i < n; i++)
screen_write_collect_add(sctx, &ictx->cell.cell);
break;
case INPUT_CSI_RCP:
input_restore_state(ictx);
break;
case INPUT_CSI_RM:
input_csi_dispatch_rm(ictx);
break;
case INPUT_CSI_RM_PRIVATE:
input_csi_dispatch_rm_private(ictx);
break;
case INPUT_CSI_SCP:
input_save_state(ictx);
break;
case INPUT_CSI_SGR:
input_csi_dispatch_sgr(ictx);
break;
case INPUT_CSI_SM:
input_csi_dispatch_sm(ictx);
break;
case INPUT_CSI_SM_PRIVATE:
input_csi_dispatch_sm_private(ictx);
break;
case INPUT_CSI_SM_GRAPHICS:
input_csi_dispatch_sm_graphics(ictx);
break;
case INPUT_CSI_SU:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_scrollup(sctx, n, bg);
break;
case INPUT_CSI_SD:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_scrolldown(sctx, n, bg);
break;
case INPUT_CSI_TBC:
switch (input_get(ictx, 0, 0, 0)) {
case -1:
break;
case 0:
if (s->cx < screen_size_x(s))
bit_clear(s->tabs, s->cx);
break;
case 3:
bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
break;
case INPUT_CSI_VPA:
n = input_get(ictx, 0, 1, 1);
if (n != -1)
screen_write_cursormove(sctx, -1, n - 1, 1);
break;
case INPUT_CSI_DECSCUSR:
n = input_get(ictx, 0, 0, 0);
if (n == -1)
break;
screen_set_cursor_style(n, &s->cstyle, &s->mode);
if (n == 0) {
/* Go back to default blinking state. */
screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING_SET);
}
break;
case INPUT_CSI_XDA:
n = input_get(ictx, 0, 0, 0);
if (n == 0) {
input_reply(ictx, 1, "\033P>|tmux %s\033\\",
getversion());
}
break;
}
ictx->flags &= ~INPUT_LAST;
return (0);
}
/* Handle CSI RM. */
static void
input_csi_dispatch_rm(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
u_int i;
for (i = 0; i < ictx->param_list_len; i++) {
switch (input_get(ictx, i, 0, -1)) {
case -1:
break;
case 4: /* IRM */
screen_write_mode_clear(sctx, MODE_INSERT);
break;
case 34:
screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
}
}
/* Handle CSI private RM. */
static void
input_csi_dispatch_rm_private(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct grid_cell *gc = &ictx->cell.cell;
u_int i;
for (i = 0; i < ictx->param_list_len; i++) {
switch (input_get(ictx, i, 0, -1)) {
case -1:
break;
case 1: /* DECCKM */
screen_write_mode_clear(sctx, MODE_KCURSOR);
break;
case 3: /* DECCOLM */
screen_write_cursormove(sctx, 0, 0, 1);
screen_write_clearscreen(sctx, gc->bg);
break;
case 6: /* DECOM */
screen_write_mode_clear(sctx, MODE_ORIGIN);
screen_write_cursormove(sctx, 0, 0, 1);
break;
case 7: /* DECAWM */
screen_write_mode_clear(sctx, MODE_WRAP);
break;
case 12:
screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
break;
case 25: /* TCEM */
screen_write_mode_clear(sctx, MODE_CURSOR);
break;
case 1000:
case 1001:
case 1002:
case 1003:
screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
break;
case 1004:
screen_write_mode_clear(sctx, MODE_FOCUSON);
break;
case 1005:
screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
break;
case 1006:
screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
break;
case 47:
case 1047:
screen_write_alternateoff(sctx, gc, 0);
break;
case 1049:
screen_write_alternateoff(sctx, gc, 1);
break;
case 2004:
screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
break;
case 2031:
screen_write_mode_clear(sctx, MODE_THEME_UPDATES);
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
}
}
/* Handle CSI SM. */
static void
input_csi_dispatch_sm(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
u_int i;
for (i = 0; i < ictx->param_list_len; i++) {
switch (input_get(ictx, i, 0, -1)) {
case -1:
break;
case 4: /* IRM */
screen_write_mode_set(sctx, MODE_INSERT);
break;
case 34:
screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
}
}
/* Handle CSI private SM. */
static void
input_csi_dispatch_sm_private(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct grid_cell *gc = &ictx->cell.cell;
u_int i;
for (i = 0; i < ictx->param_list_len; i++) {
switch (input_get(ictx, i, 0, -1)) {
case -1:
break;
case 1: /* DECCKM */
screen_write_mode_set(sctx, MODE_KCURSOR);
break;
case 3: /* DECCOLM */
screen_write_cursormove(sctx, 0, 0, 1);
screen_write_clearscreen(sctx, ictx->cell.cell.bg);
break;
case 6: /* DECOM */
screen_write_mode_set(sctx, MODE_ORIGIN);
screen_write_cursormove(sctx, 0, 0, 1);
break;
case 7: /* DECAWM */
screen_write_mode_set(sctx, MODE_WRAP);
break;
case 12:
screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
break;
case 25: /* TCEM */
screen_write_mode_set(sctx, MODE_CURSOR);
break;
case 1000:
screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
break;
case 1002:
screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
break;
case 1003:
screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
screen_write_mode_set(sctx, MODE_MOUSE_ALL);
break;
case 1004:
screen_write_mode_set(sctx, MODE_FOCUSON);
break;
case 1005:
screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
break;
case 1006:
screen_write_mode_set(sctx, MODE_MOUSE_SGR);
break;
case 47:
case 1047:
screen_write_alternateon(sctx, gc, 0);
break;
case 1049:
screen_write_alternateon(sctx, gc, 1);
break;
case 2004:
screen_write_mode_set(sctx, MODE_BRACKETPASTE);
break;
case 2031:
screen_write_mode_set(sctx, MODE_THEME_UPDATES);
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
}
}
/* Handle CSI graphics SM. */
static void
input_csi_dispatch_sm_graphics(__unused struct input_ctx *ictx)
{
}
/* Handle CSI window operations. */
static void
input_csi_dispatch_winops(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct screen *s = sctx->s;
struct window_pane *wp = ictx->wp;
struct window *w = NULL;
u_int x = screen_size_x(s), y = screen_size_y(s);
int n, m;
if (wp != NULL)
w = wp->window;
m = 0;
while ((n = input_get(ictx, m, 0, -1)) != -1) {
switch (n) {
case 1:
case 2:
case 5:
case 6:
case 7:
case 11:
case 13:
case 20:
case 21:
case 24:
break;
case 3:
case 4:
case 8:
m++;
if (input_get(ictx, m, 0, -1) == -1)
return;
/* FALLTHROUGH */
case 9:
case 10:
m++;
if (input_get(ictx, m, 0, -1) == -1)
return;
break;
case 14:
if (w == NULL)
break;
input_reply(ictx, 1, "\033[4;%u;%ut", y * w->ypixel,
x * w->xpixel);
break;
case 15:
if (w == NULL)
break;
input_reply(ictx, 1, "\033[5;%u;%ut", y * w->ypixel,
x * w->xpixel);
break;
case 16:
if (w == NULL)
break;
input_reply(ictx, 1, "\033[6;%u;%ut", w->ypixel,
w->xpixel);
break;
case 18:
input_reply(ictx, 1, "\033[8;%u;%ut", y, x);
break;
case 19:
input_reply(ictx, 1, "\033[9;%u;%ut", y, x);
break;
case 22:
m++;
switch (input_get(ictx, m, 0, -1)) {
case -1:
return;
case 0:
case 2:
screen_push_title(sctx->s);
break;
}
break;
case 23:
m++;
switch (input_get(ictx, m, 0, -1)) {
case -1:
return;
case 0:
case 2:
screen_pop_title(sctx->s);
if (wp == NULL)
break;
notify_pane("pane-title-changed", wp);
server_redraw_window_borders(w);
server_status_window(w);
break;
}
break;
default:
log_debug("%s: unknown '%c'", __func__, ictx->ch);
break;
}
m++;
}
}
/* Helper for 256 colour SGR. */
static int
input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
{
struct grid_cell *gc = &ictx->cell.cell;
if (c == -1 || c > 255) {
if (fgbg == 38)
gc->fg = 8;
else if (fgbg == 48)
gc->bg = 8;
} else {
if (fgbg == 38)
gc->fg = c | COLOUR_FLAG_256;
else if (fgbg == 48)
gc->bg = c | COLOUR_FLAG_256;
else if (fgbg == 58)
gc->us = c | COLOUR_FLAG_256;
}
return (1);
}
/* Handle CSI SGR for 256 colours. */
static void
input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
{
int c;
c = input_get(ictx, (*i) + 1, 0, -1);
if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
(*i)++;
}
/* Helper for RGB colour SGR. */
static int
input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
int b)
{
struct grid_cell *gc = &ictx->cell.cell;
if (r == -1 || r > 255)
return (0);
if (g == -1 || g > 255)
return (0);
if (b == -1 || b > 255)
return (0);
if (fgbg == 38)
gc->fg = colour_join_rgb(r, g, b);
else if (fgbg == 48)
gc->bg = colour_join_rgb(r, g, b);
else if (fgbg == 58)
gc->us = colour_join_rgb(r, g, b);
return (1);
}
/* Handle CSI SGR for RGB colours. */
static void
input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
{
int r, g, b;
r = input_get(ictx, (*i) + 1, 0, -1);
g = input_get(ictx, (*i) + 2, 0, -1);
b = input_get(ictx, (*i) + 3, 0, -1);
if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
(*i) += 3;
}
/* Handle CSI SGR with a ISO parameter. */
static void
input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
{
struct grid_cell *gc = &ictx->cell.cell;
char *s = ictx->param_list[i].str, *copy, *ptr, *out;
int p[8];
u_int n;
const char *errstr;
for (n = 0; n < nitems(p); n++)
p[n] = -1;
n = 0;
ptr = copy = xstrdup(s);
while ((out = strsep(&ptr, ":")) != NULL) {
if (*out != '\0') {
p[n++] = strtonum(out, 0, INT_MAX, &errstr);
if (errstr != NULL || n == nitems(p)) {
free(copy);
return;
}
} else {
n++;
if (n == nitems(p)) {
free(copy);
return;
}
}
log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
}
free(copy);
if (n == 0)
return;
if (p[0] == 4) {
if (n != 2)
return;
switch (p[1]) {
case 0:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
break;
case 1:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
gc->attr |= GRID_ATTR_UNDERSCORE;
break;
case 2:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
gc->attr |= GRID_ATTR_UNDERSCORE_2;
break;
case 3:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
gc->attr |= GRID_ATTR_UNDERSCORE_3;
break;
case 4:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
gc->attr |= GRID_ATTR_UNDERSCORE_4;
break;
case 5:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
gc->attr |= GRID_ATTR_UNDERSCORE_5;
break;
}
return;
}
if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
return;
switch (p[1]) {
case 2:
if (n < 3)
break;
if (n == 5)
i = 2;
else
i = 3;
if (n < i + 3)
break;
input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
p[i + 2]);
break;
case 5:
if (n < 3)
break;
input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
break;
}
}
/* Handle CSI SGR. */
static void
input_csi_dispatch_sgr(struct input_ctx *ictx)
{
struct grid_cell *gc = &ictx->cell.cell;
u_int i, link;
int n;
if (ictx->param_list_len == 0) {
memcpy(gc, &grid_default_cell, sizeof *gc);
return;
}
for (i = 0; i < ictx->param_list_len; i++) {
if (ictx->param_list[i].type == INPUT_STRING) {
input_csi_dispatch_sgr_colon(ictx, i);
continue;
}
n = input_get(ictx, i, 0, 0);
if (n == -1)
continue;
if (n == 38 || n == 48 || n == 58) {
i++;
switch (input_get(ictx, i, 0, -1)) {
case 2:
input_csi_dispatch_sgr_rgb(ictx, n, &i);
break;
case 5:
input_csi_dispatch_sgr_256(ictx, n, &i);
break;
}
continue;
}
switch (n) {
case 0:
link = gc->link;
memcpy(gc, &grid_default_cell, sizeof *gc);
gc->link = link;
break;
case 1:
gc->attr |= GRID_ATTR_BRIGHT;
break;
case 2:
gc->attr |= GRID_ATTR_DIM;
break;
case 3:
gc->attr |= GRID_ATTR_ITALICS;
break;
case 4:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
gc->attr |= GRID_ATTR_UNDERSCORE;
break;
case 5:
case 6:
gc->attr |= GRID_ATTR_BLINK;
break;
case 7:
gc->attr |= GRID_ATTR_REVERSE;
break;
case 8:
gc->attr |= GRID_ATTR_HIDDEN;
break;
case 9:
gc->attr |= GRID_ATTR_STRIKETHROUGH;
break;
case 21:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
gc->attr |= GRID_ATTR_UNDERSCORE_2;
break;
case 22:
gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
break;
case 23:
gc->attr &= ~GRID_ATTR_ITALICS;
break;
case 24:
gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
break;
case 25:
gc->attr &= ~GRID_ATTR_BLINK;
break;
case 27:
gc->attr &= ~GRID_ATTR_REVERSE;
break;
case 28:
gc->attr &= ~GRID_ATTR_HIDDEN;
break;
case 29:
gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
break;
case 30:
case 31:
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
gc->fg = n - 30;
break;
case 39:
gc->fg = 8;
break;
case 40:
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
gc->bg = n - 40;
break;
case 49:
gc->bg = 8;
break;
case 53:
gc->attr |= GRID_ATTR_OVERLINE;
break;
case 55:
gc->attr &= ~GRID_ATTR_OVERLINE;
break;
case 59:
gc->us = 8;
break;
case 90:
case 91:
case 92:
case 93:
case 94:
case 95:
case 96:
case 97:
gc->fg = n;
break;
case 100:
case 101:
case 102:
case 103:
case 104:
case 105:
case 106:
case 107:
gc->bg = n - 10;
break;
}
}
}
/* End of input with BEL. */
static int
input_end_bel(struct input_ctx *ictx)
{
log_debug("%s", __func__);
ictx->input_end = INPUT_END_BEL;
return (0);
}
/* DCS string started. */
static void
input_enter_dcs(struct input_ctx *ictx)
{
log_debug("%s", __func__);
input_clear(ictx);
input_start_ground_timer(ictx);
ictx->flags &= ~INPUT_LAST;
}
/* Handle DECRQSS query. */
static int
input_handle_decrqss(struct input_ctx *ictx)
{
struct window_pane *wp = ictx->wp;
struct options *oo;
struct screen_write_ctx *sctx = &ictx->ctx;
u_char *buf = ictx->input_buf;
size_t len = ictx->input_len;
struct screen *s = sctx->s;
int ps, opt_ps, blinking;
if (len < 3 || buf[1] != ' ' || buf[2] != 'q')
goto not_recognized;
/*
* Cursor style query: DCS $ q SP q
* Reply: DCS 1 $ r SP q <Ps> SP q ST
*/
if (s->cstyle == SCREEN_CURSOR_BLOCK ||
s->cstyle == SCREEN_CURSOR_UNDERLINE ||
s->cstyle == SCREEN_CURSOR_BAR) {
blinking = (s->mode & MODE_CURSOR_BLINKING) != 0;
switch (s->cstyle) {
case SCREEN_CURSOR_BLOCK:
ps = blinking ? 1 : 2;
break;
case SCREEN_CURSOR_UNDERLINE:
ps = blinking ? 3 : 4;
break;
case SCREEN_CURSOR_BAR:
ps = blinking ? 5 : 6;
break;
default:
ps = 0;
break;
}
} else {
/*
* No explicit runtime style: fall back to the configured
* cursor-style option (integer Ps 0..6). Pane options inherit.
*/
if (wp != NULL)
oo = wp->options;
else
oo = global_options;
opt_ps = options_get_number(oo, "cursor-style");
/* Sanity clamp: valid Ps are 0..6 per DECSCUSR. */
if (opt_ps < 0 || opt_ps > 6)
opt_ps = 0;
ps = opt_ps;
}
log_debug("%s: DECRQSS cursor -> Ps=%d (cstyle=%d mode=%#x)", __func__,
ps, s->cstyle, s->mode);
input_reply(ictx, 1, "\033P1$r q%d q\033\\", ps);
return (0);
not_recognized:
/* Unrecognized DECRQSS: send DCS 0 $ r Pt ST. */
input_reply(ictx, 1, "\033P0$r\033\\");
return (0);
}
/* DCS terminator (ST) received. */
static int
input_dcs_dispatch(struct input_ctx *ictx)
{
struct window_pane *wp = ictx->wp;
struct options *oo;
struct screen_write_ctx *sctx = &ictx->ctx;
u_char *buf = ictx->input_buf;
size_t len = ictx->input_len;
const char prefix[] = "tmux;";
const u_int prefixlen = (sizeof prefix) - 1;
long long allow_passthrough = 0;
if (wp == NULL)
return (0);
oo = wp->options;
if (ictx->flags & INPUT_DISCARD) {
log_debug("%s: %zu bytes (discard)", __func__, len);
return (0);
}
log_debug("%s: %zu bytes", __func__, len);
/* DCS sequences with intermediate byte '$' (includes DECRQSS). */
if (ictx->interm_len == 1 && ictx->interm_buf[0] == '$') {
/* DECRQSS is DCS $ q Pt ST. */
if (len >= 1 && buf[0] == 'q')
return (input_handle_decrqss(ictx));
/*
* Not DECRQSS. DCS '$' is currently only used by DECRQSS, but
* leave other '$' DCS (if any appear in future) to existing
* handlers.
*/
}
allow_passthrough = options_get_number(oo, "allow-passthrough");
if (!allow_passthrough)
return (0);
log_debug("%s: \"%s\"", __func__, buf);
if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
allow_passthrough == 2);
}
return (0);
}
/* OSC string started. */
static void
input_enter_osc(struct input_ctx *ictx)
{
log_debug("%s", __func__);
input_clear(ictx);
input_start_ground_timer(ictx);
ictx->flags &= ~INPUT_LAST;
}
/* OSC terminator (ST) received. */
static void
input_exit_osc(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct window_pane *wp = ictx->wp;
u_char *p = ictx->input_buf;
u_int option;
if (ictx->flags & INPUT_DISCARD)
return;
if (ictx->input_len < 1 || *p < '0' || *p > '9')
return;
log_debug("%s: \"%s\" (end %s)", __func__, p,
ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
option = 0;
while (*p >= '0' && *p <= '9')
option = option * 10 + *p++ - '0';
if (*p != ';' && *p != '\0')
return;
if (*p == ';')
p++;
switch (option) {
case 0:
case 2:
if (wp != NULL &&
options_get_number(wp->options, "allow-set-title") &&
screen_set_title(sctx->s, p)) {
notify_pane("pane-title-changed", wp);
server_redraw_window_borders(wp->window);
server_status_window(wp->window);
}
break;
case 4:
input_osc_4(ictx, p);
break;
case 7:
if (utf8_isvalid(p)) {
screen_set_path(sctx->s, p);
if (wp != NULL) {
server_redraw_window_borders(wp->window);
server_status_window(wp->window);
}
}
break;
case 8:
input_osc_8(ictx, p);
break;
case 10:
input_osc_10(ictx, p);
break;
case 11:
input_osc_11(ictx, p);
break;
case 12:
input_osc_12(ictx, p);
break;
case 52:
input_osc_52(ictx, p);
break;
case 104:
input_osc_104(ictx, p);
break;
case 110:
input_osc_110(ictx, p);
break;
case 111:
input_osc_111(ictx, p);
break;
case 112:
input_osc_112(ictx, p);
break;
case 133:
input_osc_133(ictx, p);
break;
default:
log_debug("%s: unknown '%u'", __func__, option);
break;
}
}
/* APC string started. */
static void
input_enter_apc(struct input_ctx *ictx)
{
log_debug("%s", __func__);
input_clear(ictx);
input_start_ground_timer(ictx);
ictx->flags &= ~INPUT_LAST;
}
/* APC terminator (ST) received. */
static void
input_exit_apc(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct window_pane *wp = ictx->wp;
if (ictx->flags & INPUT_DISCARD)
return;
log_debug("%s: \"%s\"", __func__, ictx->input_buf);
if (wp != NULL &&
options_get_number(wp->options, "allow-set-title") &&
screen_set_title(sctx->s, ictx->input_buf)) {
notify_pane("pane-title-changed", wp);
server_redraw_window_borders(wp->window);
server_status_window(wp->window);
}
}
/* Rename string started. */
static void
input_enter_rename(struct input_ctx *ictx)
{
log_debug("%s", __func__);
input_clear(ictx);
input_start_ground_timer(ictx);
ictx->flags &= ~INPUT_LAST;
}
/* Rename terminator (ST) received. */
static void
input_exit_rename(struct input_ctx *ictx)
{
struct window_pane *wp = ictx->wp;
struct window *w;
struct options_entry *o;
if (wp == NULL)
return;
if (ictx->flags & INPUT_DISCARD)
return;
if (!options_get_number(ictx->wp->options, "allow-rename"))
return;
log_debug("%s: \"%s\"", __func__, ictx->input_buf);
if (!utf8_isvalid(ictx->input_buf))
return;
w = wp->window;
if (ictx->input_len == 0) {
o = options_get_only(w->options, "automatic-rename");
if (o != NULL)
options_remove_or_default(o, -1, NULL);
if (!options_get_number(w->options, "automatic-rename"))
window_set_name(w, "");
} else {
options_set_number(w->options, "automatic-rename", 0);
window_set_name(w, ictx->input_buf);
}
server_redraw_window_borders(w);
server_status_window(w);
}
/* Open UTF-8 character. */
static int
input_top_bit_set(struct input_ctx *ictx)
{
struct screen_write_ctx *sctx = &ictx->ctx;
struct utf8_data *ud = &ictx->utf8data;
ictx->flags &= ~INPUT_LAST;
if (!ictx->utf8started) {
ictx->utf8started = 1;
if (utf8_open(ud, ictx->ch) != UTF8_MORE)
input_stop_utf8(ictx);
return (0);
}
switch (utf8_append(ud, ictx->ch)) {
case UTF8_MORE:
return (0);
case UTF8_ERROR:
input_stop_utf8(ictx);
return (0);
case UTF8_DONE:
break;
}
ictx->utf8started = 0;
log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
(int)ud->size, ud->data, ud->width);
utf8_copy(&ictx->cell.cell.data, ud);
screen_write_collect_add(sctx, &ictx->cell.cell);
utf8_copy(&ictx->last, &ictx->cell.cell.data);
ictx->flags |= INPUT_LAST;
return (0);
}
/* Reply to a colour request. */
static void
input_osc_colour_reply(struct input_ctx *ictx, int add, u_int n, int idx, int c,
enum input_end_type end_type)
{
u_char r, g, b;
const char *end;
if (c != -1)
c = colour_force_rgb(c);
if (c == -1)
return;
colour_split_rgb(c, &r, &g, &b);
if (end_type == INPUT_END_BEL)
end = "\007";
else
end = "\033\\";
if (n == 4) {
input_reply(ictx, add,
"\033]%u;%d;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
n, idx, r, r, g, g, b, b, end);
} else {
input_reply(ictx, add,
"\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
n, r, r, g, g, b, b, end);
}
}
/* Handle the OSC 4 sequence for setting (multiple) palette entries. */
static void
input_osc_4(struct input_ctx *ictx, const char *p)
{
char *copy, *s, *next = NULL;
long idx;
int c, bad = 0, redraw = 0;
struct colour_palette *palette = ictx->palette;
copy = s = xstrdup(p);
while (s != NULL && *s != '\0') {
idx = strtol(s, &next, 10);
if (*next++ != ';') {
bad = 1;
break;
}
if (idx < 0 || idx >= 256) {
bad = 1;
break;
}
s = strsep(&next, ";");
if (strcmp(s, "?") == 0) {
c = colour_palette_get(palette, idx|COLOUR_FLAG_256);
if (c != -1) {
input_osc_colour_reply(ictx, 1, 4, idx, c,
ictx->input_end);
s = next;
continue;
}
input_add_request(ictx, INPUT_REQUEST_PALETTE, idx);
s = next;
continue;
}
if ((c = colour_parseX11(s)) == -1) {
s = next;
continue;
}
if (colour_palette_set(palette, idx, c))
redraw = 1;
s = next;
}
if (bad)
log_debug("bad OSC 4: %s", p);
if (redraw)
screen_write_fullredraw(&ictx->ctx);
free(copy);
}
/* Handle the OSC 8 sequence for embedding hyperlinks. */
static void
input_osc_8(struct input_ctx *ictx, const char *p)
{
struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
struct grid_cell *gc = &ictx->cell.cell;
const char *start, *end, *uri;
char *id = NULL;
for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) {
if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
if (id != NULL)
goto bad;
id = xstrndup(start + 3, end - start - 3);
}
/* The first ; is the end of parameters and start of the URI. */
if (*end == ';')
break;
}
if (end == NULL || *end != ';')
goto bad;
uri = end + 1;
if (*uri == '\0') {
gc->link = 0;
free(id);
return;
}
gc->link = hyperlinks_put(hl, uri, id);
if (id == NULL)
log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
else
log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
free(id);
return;
bad:
log_debug("bad OSC 8 %s", p);
free(id);
}
/* Handle the OSC 10 sequence for setting and querying foreground colour. */
static void
input_osc_10(struct input_ctx *ictx, const char *p)
{
struct window_pane *wp = ictx->wp;
struct grid_cell defaults;
int c;
if (strcmp(p, "?") == 0) {
if (wp == NULL)
return;
c = window_pane_get_fg_control_client(wp);
if (c == -1) {
tty_default_colours(&defaults, wp);
if (COLOUR_DEFAULT(defaults.fg))
c = window_pane_get_fg(wp);
else
c = defaults.fg;
}
input_osc_colour_reply(ictx, 1, 10, 0, c, ictx->input_end);
return;
}
if ((c = colour_parseX11(p)) == -1) {
log_debug("bad OSC 10: %s", p);
return;
}
if (ictx->palette != NULL) {
ictx->palette->fg = c;
if (wp != NULL)
wp->flags |= PANE_STYLECHANGED;
screen_write_fullredraw(&ictx->ctx);
}
}
/* Handle the OSC 110 sequence for resetting foreground colour. */
static void
input_osc_110(struct input_ctx *ictx, const char *p)
{
struct window_pane *wp = ictx->wp;
if (*p != '\0')
return;
if (ictx->palette != NULL) {
ictx->palette->fg = 8;
if (wp != NULL)
wp->flags |= PANE_STYLECHANGED;
screen_write_fullredraw(&ictx->ctx);
}
}
/* Handle the OSC 11 sequence for setting and querying background colour. */
static void
input_osc_11(struct input_ctx *ictx, const char *p)
{
struct window_pane *wp = ictx->wp;
int c;
if (strcmp(p, "?") == 0) {
if (wp == NULL)
return;
c = window_pane_get_bg(wp);
input_osc_colour_reply(ictx, 1, 11, 0, c, ictx->input_end);
return;
}
if ((c = colour_parseX11(p)) == -1) {
log_debug("bad OSC 11: %s", p);
return;
}
if (ictx->palette != NULL) {
ictx->palette->bg = c;
if (wp != NULL)
wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
screen_write_fullredraw(&ictx->ctx);
}
}
/* Handle the OSC 111 sequence for resetting background colour. */
static void
input_osc_111(struct input_ctx *ictx, const char *p)
{
struct window_pane *wp = ictx->wp;
if (*p != '\0')
return;
if (ictx->palette != NULL) {
ictx->palette->bg = 8;
if (wp != NULL)
wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
screen_write_fullredraw(&ictx->ctx);
}
}
/* Handle the OSC 12 sequence for setting and querying cursor colour. */
static void
input_osc_12(struct input_ctx *ictx, const char *p)
{
struct window_pane *wp = ictx->wp;
int c;
if (strcmp(p, "?") == 0) {
if (wp != NULL) {
c = ictx->ctx.s->ccolour;
if (c == -1)
c = ictx->ctx.s->default_ccolour;
input_osc_colour_reply(ictx, 1, 12, 0, c, ictx->input_end);
}
return;
}
if ((c = colour_parseX11(p)) == -1) {
log_debug("bad OSC 12: %s", p);
return;
}
screen_set_cursor_colour(ictx->ctx.s, c);
}
/* Handle the OSC 112 sequence for resetting cursor colour. */
static void
input_osc_112(struct input_ctx *ictx, const char *p)
{
if (*p == '\0') /* no arguments allowed */
screen_set_cursor_colour(ictx->ctx.s, -1);
}
/* Handle the OSC 133 sequence. */
static void
input_osc_133(struct input_ctx *ictx, const char *p)
{
struct grid *gd = ictx->ctx.s->grid;
u_int line = ictx->ctx.s->cy + gd->hsize;
struct grid_line *gl;
if (line > gd->hsize + gd->sy - 1)
return;
gl = grid_get_line(gd, line);
switch (*p) {
case 'A':
gl->flags |= GRID_LINE_START_PROMPT;
break;
case 'C':
gl->flags |= GRID_LINE_START_OUTPUT;
break;
}
}
/* Handle OSC 52 reply. */
static void
input_osc_52_reply(struct input_ctx *ictx)
{
struct paste_buffer *pb;
int state;
const char *buf;
size_t len;
state = options_get_number(global_options, "get-clipboard");
if (state == 0)
return;
if (state == 1) {
if ((pb = paste_get_top(NULL)) == NULL)
return;
buf = paste_buffer_data(pb, &len);
if (ictx->input_end == INPUT_END_BEL)
input_reply_clipboard(ictx->event, buf, len, "\007");
else
input_reply_clipboard(ictx->event, buf, len, "\033\\");
return;
}
input_add_request(ictx, INPUT_REQUEST_CLIPBOARD, ictx->input_end);
}
/* Handle the OSC 52 sequence for setting the clipboard. */
static void
input_osc_52(struct input_ctx *ictx, const char *p)
{
struct window_pane *wp = ictx->wp;
size_t len;
char *end;
u_char *out;
int outlen, state;
struct screen_write_ctx ctx;
const char* allow = "cpqs01234567";
char flags[sizeof "cpqs01234567"] = "";
u_int i, j = 0;
if (wp == NULL)
return;
state = options_get_number(global_options, "set-clipboard");
if (state != 2)
return;
if ((end = strchr(p, ';')) == NULL)
return;
end++;
if (*end == '\0')
return;
log_debug("%s: %s", __func__, end);
for (i = 0; p + i != end; i++) {
if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
flags[j++] = p[i];
}
log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
if (strcmp(end, "?") == 0) {
input_osc_52_reply(ictx);
return;
}
len = (strlen(end) / 4) * 3;
if (len == 0)
return;
out = xmalloc(len);
if ((outlen = b64_pton(end, out, len)) == -1) {
free(out);
return;
}
screen_write_start_pane(&ctx, wp, NULL);
screen_write_setselection(&ctx, flags, out, outlen);
screen_write_stop(&ctx);
notify_pane("pane-set-clipboard", wp);
paste_add(NULL, out, outlen);
}
/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
static void
input_osc_104(struct input_ctx *ictx, const char *p)
{
char *copy, *s;
long idx;
int bad = 0, redraw = 0;
if (*p == '\0') {
colour_palette_clear(ictx->palette);
screen_write_fullredraw(&ictx->ctx);
return;
}
copy = s = xstrdup(p);
while (*s != '\0') {
idx = strtol(s, &s, 10);
if (*s != '\0' && *s != ';') {
bad = 1;
break;
}
if (idx < 0 || idx >= 256) {
bad = 1;
break;
}
if (colour_palette_set(ictx->palette, idx, -1))
redraw = 1;
if (*s == ';')
s++;
}
if (bad)
log_debug("bad OSC 104: %s", p);
if (redraw)
screen_write_fullredraw(&ictx->ctx);
free(copy);
}
/* Send a clipboard reply. */
void
input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
const char *end)
{
char *out = NULL;
int outlen = 0;
if (buf != NULL && len != 0) {
if (len >= ((size_t)INT_MAX * 3 / 4) - 1)
return;
outlen = 4 * ((len + 2) / 3) + 1;
out = xmalloc(outlen);
if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
free(out);
return;
}
}
bufferevent_write(bev, "\033]52;;", 6);
if (outlen != 0)
bufferevent_write(bev, out, outlen);
bufferevent_write(bev, end, strlen(end));
free(out);
}
/* Set input buffer size. */
void
input_set_buffer_size(size_t buffer_size)
{
log_debug("%s: %lu -> %lu", __func__, input_buffer_size, buffer_size);
input_buffer_size = buffer_size;
}
/* Request timer. Remove any requests that are too old. */
static void
input_request_timer_callback(__unused int fd, __unused short events, void *arg)
{
struct input_ctx *ictx = arg;
struct input_request *ir, *ir1;
time_t t = time(NULL);
TAILQ_FOREACH_SAFE(ir, &ictx->requests, entry, ir1) {
if (ir->t >= t - INPUT_REQUEST_TIMEOUT)
continue;
if (ir->type == INPUT_REQUEST_QUEUE)
input_send_reply(ir->ictx, ir->data);
input_free_request(ir);
}
if (ictx->request_count != 0)
input_start_request_timer(ictx);
}
/* Start the request timer. */
static void
input_start_request_timer(struct input_ctx *ictx)
{
struct timeval tv = { .tv_sec = 0, .tv_usec = 500000 };
event_del(&ictx->request_timer);
event_add(&ictx->request_timer, &tv);
}
/* Create a request. */
static struct input_request *
input_make_request(struct input_ctx *ictx, enum input_request_type type)
{
struct input_request *ir;
ir = xcalloc (1, sizeof *ir);
ir->type = type;
ir->ictx = ictx;
ir->t = time(NULL);
if (++ictx->request_count == 1)
input_start_request_timer(ictx);
TAILQ_INSERT_TAIL(&ictx->requests, ir, entry);
return (ir);
}
/* Free a request. */
static void
input_free_request(struct input_request *ir)
{
struct input_ctx *ictx = ir->ictx;
if (ir->c != NULL)
TAILQ_REMOVE(&ir->c->input_requests, ir, centry);
ictx->request_count--;
TAILQ_REMOVE(&ictx->requests, ir, entry);
free(ir->data);
free(ir);
}
/* Add a request. */
static int
input_add_request(struct input_ctx *ictx, enum input_request_type type, int idx)
{
struct window_pane *wp = ictx->wp;
struct window *w;
struct client *c = NULL, *loop;
struct input_request *ir;
char s[64];
if (wp == NULL)
return (-1);
w = wp->window;
TAILQ_FOREACH(loop, &clients, entry) {
if (loop->flags & CLIENT_UNATTACHEDFLAGS)
continue;
if (loop->session == NULL || !session_has(loop->session, w))
continue;
if (~loop->tty.flags & TTY_STARTED)
continue;
if (c == NULL)
c = loop;
else if (timercmp(&loop->activity_time, &c->activity_time, >))
c = loop;
}
if (c == NULL)
return (-1);
ir = input_make_request(ictx, type);
ir->c = c;
ir->idx = idx;
ir->end = ictx->input_end;
TAILQ_INSERT_TAIL(&c->input_requests, ir, centry);
switch (type) {
case INPUT_REQUEST_PALETTE:
xsnprintf(s, sizeof s, "\033]4;%d;?\033\\", idx);
tty_puts(&c->tty, s);
break;
case INPUT_REQUEST_CLIPBOARD:
tty_putcode_ss(&c->tty, TTYC_MS, "", "?");
break;
case INPUT_REQUEST_QUEUE:
break;
}
return (0);
}
/* Handle a palette reply. */
static void
input_request_palette_reply(struct input_request *ir, void *data)
{
struct input_request_palette_data *pd = data;
input_osc_colour_reply(ir->ictx, 0, 4, pd->idx, pd->c, ir->end);
}
/* Handle a clipboard reply. */
static void
input_request_clipboard_reply(struct input_request *ir, void *data)
{
struct input_ctx *ictx = ir->ictx;
struct input_request_clipboard_data *cd = data;
int state;
char *copy;
state = options_get_number(global_options, "get-clipboard");
if (state == 0 || state == 1)
return;
if (state == 3) {
copy = xmalloc(cd->len);
memcpy(copy, cd->buf, cd->len);
paste_add(NULL, copy, cd->len);
}
if (ir->idx == INPUT_END_BEL)
input_reply_clipboard(ictx->event, cd->buf, cd->len, "\007");
else
input_reply_clipboard(ictx->event, cd->buf, cd->len, "\033\\");
}
/* Handle a reply to a request. */
void
input_request_reply(struct client *c, enum input_request_type type, void *data)
{
struct input_request *ir, *ir1, *found = NULL;
struct input_request_palette_data *pd = data;
int complete = 0;
TAILQ_FOREACH_SAFE(ir, &c->input_requests, centry, ir1) {
if (ir->type != type) {
input_free_request(ir);
continue;
}
if (type == INPUT_REQUEST_PALETTE && pd->idx == ir->idx) {
found = ir;
break;
}
if (type == INPUT_REQUEST_CLIPBOARD) {
found = ir;
break;
}
}
if (found == NULL)
return;
TAILQ_FOREACH_SAFE(ir, &found->ictx->requests, entry, ir1) {
if (complete && ir->type != INPUT_REQUEST_QUEUE)
break;
if (ir->type == INPUT_REQUEST_QUEUE)
input_send_reply(ir->ictx, ir->data);
else if (ir == found) {
if (ir->type == INPUT_REQUEST_PALETTE)
input_request_palette_reply(ir, data);
else if (ir->type == INPUT_REQUEST_CLIPBOARD)
input_request_clipboard_reply(ir, data);
complete = 1;
}
input_free_request(ir);
}
}
/* Cancel pending requests for client. */
void
input_cancel_requests(struct client *c)
{
struct input_request *ir, *ir1;
TAILQ_FOREACH_SAFE(ir, &c->input_requests, entry, ir1)
input_free_request(ir);
}
/* Report current theme. */
static void
input_report_current_theme(struct input_ctx *ictx)
{
switch (window_pane_get_theme(ictx->wp)) {
case THEME_DARK:
input_reply(ictx, 0, "\033[?997;1n");
break;
case THEME_LIGHT:
input_reply(ictx, 0, "\033[?997;2n");
break;
case THEME_UNKNOWN:
break;
}
}
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