/* $OpenBSD: tty-features.c,v 1.20 2021/06/10 07:59:08 nicm Exp $ */ /* * Copyright (c) 2020 Nicholas Marriott * * 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 #include #include #include "tmux.h" /* * Still hardcoded: * - default colours (under AX or op capabilities); * - AIX colours (under colors >= 16); * - alternate escape (if terminal is VT100-like). * * Also: * - DECFRA uses a flag instead of capabilities; * - UTF-8 is a separate flag on the client; needed for unattached clients. */ /* A named terminal feature. */ struct tty_feature { const char *name; const char **capabilities; int flags; }; /* Terminal has xterm(1) title setting. */ static const char *tty_feature_title_capabilities[] = { "tsl=\\E]0;", /* should be using TS really */ "fsl=\\a", NULL }; static const struct tty_feature tty_feature_title = { "title", tty_feature_title_capabilities, 0 }; /* Terminal has mouse support. */ static const char *tty_feature_mouse_capabilities[] = { "kmous=\\E[M", NULL }; static const struct tty_feature tty_feature_mouse = { "mouse", tty_feature_mouse_capabilities, 0 }; /* Terminal can set the clipboard with OSC 52. */ static const char *tty_feature_clipboard_capabilities[] = { "Ms=\\E]52;%p1%s;%p2%s\\a", NULL }; static const struct tty_feature tty_feature_clipboard = { "clipboard", tty_feature_clipboard_capabilities, 0 }; /* * Terminal supports RGB colour. This replaces setab and setaf also since * terminals with RGB have versions that do not allow setting colours from the * 256 palette. */ static const char *tty_feature_rgb_capabilities[] = { "AX", "setrgbf=\\E[38;2;%p1%d;%p2%d;%p3%dm", "setrgbb=\\E[48;2;%p1%d;%p2%d;%p3%dm", "setab=\\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m", "setaf=\\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m", NULL }; static const struct tty_feature tty_feature_rgb = { "RGB", tty_feature_rgb_capabilities, TERM_256COLOURS|TERM_RGBCOLOURS }; /* Terminal supports 256 colours. */ static const char *tty_feature_256_capabilities[] = { "AX", "setab=\\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m", "setaf=\\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m", NULL }; static const struct tty_feature tty_feature_256 = { "256", tty_feature_256_capabilities, TERM_256COLOURS }; /* Terminal supports overline. */ static const char *tty_feature_overline_capabilities[] = { "Smol=\\E[53m", NULL }; static const struct tty_feature tty_feature_overline = { "overline", tty_feature_overline_capabilities, 0 }; /* Terminal supports underscore styles. */ static const char *tty_feature_usstyle_capabilities[] = { "Smulx=\\E[4::%p1%dm", "Setulc=\\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m", "ol=\\E[59m", NULL }; static const struct tty_feature tty_feature_usstyle = { "usstyle", tty_feature_usstyle_capabilities, 0 }; /* Terminal supports bracketed paste. */ static const char *tty_feature_bpaste_capabilities[] = { "Enbp=\\E[?2004h", "Dsbp=\\E[?2004l", NULL }; static const struct tty_feature tty_feature_bpaste = { "bpaste", tty_feature_bpaste_capabilities, 0 }; /* Terminal supports focus reporting. */ static const char *tty_feature_focus_capabilities[] = { "Enfcs=\\E[?1004h", "Dsfcs=\\E[?1004l", NULL }; static const struct tty_feature tty_feature_focus = { "focus", tty_feature_focus_capabilities, 0 }; /* Terminal supports cursor styles. */ static const char *tty_feature_cstyle_capabilities[] = { "Ss=\\E[%p1%d q", "Se=\\E[2 q", NULL }; static const struct tty_feature tty_feature_cstyle = { "cstyle", tty_feature_cstyle_capabilities, 0 }; /* Terminal supports cursor colours. */ static const char *tty_feature_ccolour_capabilities[] = { "Cs=\\E]12;%p1%s\\a", "Cr=\\E]112\\a", NULL }; static const struct tty_feature tty_feature_ccolour = { "ccolour", tty_feature_ccolour_capabilities, 0 }; /* Terminal supports strikethrough. */ static const char *tty_feature_strikethrough_capabilities[] = { "smxx=\\E[9m", NULL }; static const struct tty_feature tty_feature_strikethrough = { "strikethrough", tty_feature_strikethrough_capabilities, 0 }; /* Terminal supports synchronized updates. */ static const char *tty_feature_sync_capabilities[] = { "Sync=\\EP=%p1%ds\\E\\\\", NULL }; static const struct tty_feature tty_feature_sync = { "sync", tty_feature_sync_capabilities, 0 }; /* Terminal supports extended keys. */ static const char *tty_feature_extkeys_capabilities[] = { "Eneks=\\E[>4;1m", "Dseks=\\E[>4m", NULL }; static const struct tty_feature tty_feature_extkeys = { "extkeys", tty_feature_extkeys_capabilities, 0 }; /* Terminal supports DECSLRM margins. */ static const char *tty_feature_margins_capabilities[] = { "Enmg=\\E[?69h", "Dsmg=\\E[?69l", "Clmg=\\E[s", "Cmg=\\E[%i%p1%d;%p2%ds", NULL }; static const struct tty_feature tty_feature_margins = { "margins", tty_feature_margins_capabilities, TERM_DECSLRM }; /* Terminal supports DECFRA rectangle fill. */ static const char *tty_feature_rectfill_capabilities[] = { "Rect", NULL }; static const struct tty_feature tty_feature_rectfill = { "rectfill", tty_feature_rectfill_capabilities, TERM_DECFRA }; /* Available terminal features. */ static const struct tty_feature *tty_features[] = { &tty_feature_256, &tty_feature_bpaste, &tty_feature_ccolour, &tty_feature_clipboard, &tty_feature_cstyle, &tty_feature_extkeys, &tty_feature_focus, &tty_feature_margins, &tty_feature_mouse, &tty_feature_overline, &tty_feature_rectfill, &tty_feature_rgb, &tty_feature_strikethrough, &tty_feature_sync, &tty_feature_title, &tty_feature_usstyle }; void tty_add_features(int *feat, const char *s, const char *separators) { const struct tty_feature *tf; char *next, *loop, *copy; u_int i; log_debug("adding terminal features %s", s); loop = copy = xstrdup(s); while ((next = strsep(&loop, separators)) != NULL) { for (i = 0; i < nitems(tty_features); i++) { tf = tty_features[i]; if (strcasecmp(tf->name, next) == 0) break; } if (i == nitems(tty_features)) { log_debug("unknown terminal feature: %s", next); break; } if (~(*feat) & (1 << i)) { log_debug("adding terminal feature: %s", tf->name); (*feat) |= (1 << i); } } free(copy); } const char * tty_get_features(int feat) { const struct tty_feature *tf; static char s[512]; u_int i; *s = '\0'; for (i = 0; i < nitems(tty_features); i++) { if (~feat & (1 << i)) continue; tf = tty_features[i]; strlcat(s, tf->name, sizeof s); strlcat(s, ",", sizeof s); } if (*s != '\0') s[strlen(s) - 1] = '\0'; return (s); } int tty_apply_features(struct tty_term *term, int feat) { const struct tty_feature *tf; const char **capability; u_int i; if (feat == 0) return (0); log_debug("applying terminal features: %s", tty_get_features(feat)); for (i = 0; i < nitems(tty_features); i++) { if ((term->features & (1 << i)) || (~feat & (1 << i))) continue; tf = tty_features[i]; log_debug("applying terminal feature: %s", tf->name); if (tf->capabilities != NULL) { capability = tf->capabilities; while (*capability != NULL) { log_debug("adding capability: %s", *capability); tty_term_apply(term, *capability, 1); capability++; } } term->flags |= tf->flags; } if ((term->features | feat) == term->features) return (0); term->features |= feat; return (1); } void tty_default_features(int *feat, const char *name, u_int version) { static struct { const char *name; u_int version; const char *features; } table[] = { #define TTY_FEATURES_BASE_MODERN_XTERM \ "256,RGB,bpaste,clipboard,mouse,strikethrough,title" { .name = "mintty", .features = TTY_FEATURES_BASE_MODERN_XTERM ",ccolour,cstyle,extkeys,margins,overline,usstyle" }, { .name = "tmux", .features = TTY_FEATURES_BASE_MODERN_XTERM ",ccolour,cstyle,focus,overline,usstyle" }, { .name = "rxvt-unicode", .features = "256,bpaste,ccolour,cstyle,mouse,title" }, { .name = "iTerm2", .features = TTY_FEATURES_BASE_MODERN_XTERM ",cstyle,extkeys,margins,sync" }, { .name = "XTerm", /* * xterm also supports DECSLRM and DECFRA, but they can be * disabled so not set it here - they will be added if * secondary DA shows VT420. */ .features = TTY_FEATURES_BASE_MODERN_XTERM ",ccolour,cstyle,extkeys,focus" } }; u_int i; for (i = 0; i < nitems(table); i++) { if (strcmp(table[i].name, name) != 0) continue; if (version != 0 && version < table[i].version) continue; tty_add_features(feat, table[i].features, ","); } }