1 /* $OpenBSD: tty-term.c,v 1.45 2016/01/29 11:13:56 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <curses.h> 22 #include <fnmatch.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <term.h> 26 #include <vis.h> 27 28 #include "tmux.h" 29 30 void tty_term_override(struct tty_term *, const char *); 31 char *tty_term_strip(const char *); 32 33 struct tty_terms tty_terms = LIST_HEAD_INITIALIZER(tty_terms); 34 35 enum tty_code_type { 36 TTYCODE_NONE = 0, 37 TTYCODE_STRING, 38 TTYCODE_NUMBER, 39 TTYCODE_FLAG, 40 }; 41 42 struct tty_code { 43 enum tty_code_type type; 44 union { 45 char *string; 46 int number; 47 int flag; 48 } value; 49 }; 50 51 struct tty_term_code_entry { 52 enum tty_code_type type; 53 const char *name; 54 }; 55 56 const struct tty_term_code_entry tty_term_codes[] = { 57 [TTYC_ACSC] = { TTYCODE_STRING, "acsc" }, 58 [TTYC_AX] = { TTYCODE_FLAG, "AX" }, 59 [TTYC_BCE] = { TTYCODE_FLAG, "bce" }, 60 [TTYC_BEL] = { TTYCODE_STRING, "bel" }, 61 [TTYC_BLINK] = { TTYCODE_STRING, "blink" }, 62 [TTYC_BOLD] = { TTYCODE_STRING, "bold" }, 63 [TTYC_CIVIS] = { TTYCODE_STRING, "civis" }, 64 [TTYC_CLEAR] = { TTYCODE_STRING, "clear" }, 65 [TTYC_CNORM] = { TTYCODE_STRING, "cnorm" }, 66 [TTYC_COLORS] = { TTYCODE_NUMBER, "colors" }, 67 [TTYC_CR] = { TTYCODE_STRING, "Cr" }, 68 [TTYC_CS] = { TTYCODE_STRING, "Cs" }, 69 [TTYC_CSR] = { TTYCODE_STRING, "csr" }, 70 [TTYC_CUB] = { TTYCODE_STRING, "cub" }, 71 [TTYC_CUB1] = { TTYCODE_STRING, "cub1" }, 72 [TTYC_CUD] = { TTYCODE_STRING, "cud" }, 73 [TTYC_CUD1] = { TTYCODE_STRING, "cud1" }, 74 [TTYC_CUF] = { TTYCODE_STRING, "cuf" }, 75 [TTYC_CUF1] = { TTYCODE_STRING, "cuf1" }, 76 [TTYC_CUP] = { TTYCODE_STRING, "cup" }, 77 [TTYC_CUU] = { TTYCODE_STRING, "cuu" }, 78 [TTYC_CUU1] = { TTYCODE_STRING, "cuu1" }, 79 [TTYC_CVVIS] = { TTYCODE_STRING, "cvvis" }, 80 [TTYC_DCH] = { TTYCODE_STRING, "dch" }, 81 [TTYC_DCH1] = { TTYCODE_STRING, "dch1" }, 82 [TTYC_DIM] = { TTYCODE_STRING, "dim" }, 83 [TTYC_DL] = { TTYCODE_STRING, "dl" }, 84 [TTYC_DL1] = { TTYCODE_STRING, "dl1" }, 85 [TTYC_E3] = { TTYCODE_STRING, "E3" }, 86 [TTYC_ECH] = { TTYCODE_STRING, "ech" }, 87 [TTYC_EL] = { TTYCODE_STRING, "el" }, 88 [TTYC_EL1] = { TTYCODE_STRING, "el1" }, 89 [TTYC_ENACS] = { TTYCODE_STRING, "enacs" }, 90 [TTYC_FSL] = { TTYCODE_STRING, "fsl" }, 91 [TTYC_HOME] = { TTYCODE_STRING, "home" }, 92 [TTYC_HPA] = { TTYCODE_STRING, "hpa" }, 93 [TTYC_ICH] = { TTYCODE_STRING, "ich" }, 94 [TTYC_ICH1] = { TTYCODE_STRING, "ich1" }, 95 [TTYC_IL] = { TTYCODE_STRING, "il" }, 96 [TTYC_IL1] = { TTYCODE_STRING, "il1" }, 97 [TTYC_INVIS] = { TTYCODE_STRING, "invis" }, 98 [TTYC_IS1] = { TTYCODE_STRING, "is1" }, 99 [TTYC_IS2] = { TTYCODE_STRING, "is2" }, 100 [TTYC_IS3] = { TTYCODE_STRING, "is3" }, 101 [TTYC_KCBT] = { TTYCODE_STRING, "kcbt" }, 102 [TTYC_KCUB1] = { TTYCODE_STRING, "kcub1" }, 103 [TTYC_KCUD1] = { TTYCODE_STRING, "kcud1" }, 104 [TTYC_KCUF1] = { TTYCODE_STRING, "kcuf1" }, 105 [TTYC_KCUU1] = { TTYCODE_STRING, "kcuu1" }, 106 [TTYC_KDC2] = { TTYCODE_STRING, "kDC" }, 107 [TTYC_KDC3] = { TTYCODE_STRING, "kDC3" }, 108 [TTYC_KDC4] = { TTYCODE_STRING, "kDC4" }, 109 [TTYC_KDC5] = { TTYCODE_STRING, "kDC5" }, 110 [TTYC_KDC6] = { TTYCODE_STRING, "kDC6" }, 111 [TTYC_KDC7] = { TTYCODE_STRING, "kDC7" }, 112 [TTYC_KDCH1] = { TTYCODE_STRING, "kdch1" }, 113 [TTYC_KDN2] = { TTYCODE_STRING, "kDN" }, 114 [TTYC_KDN3] = { TTYCODE_STRING, "kDN3" }, 115 [TTYC_KDN4] = { TTYCODE_STRING, "kDN4" }, 116 [TTYC_KDN5] = { TTYCODE_STRING, "kDN5" }, 117 [TTYC_KDN6] = { TTYCODE_STRING, "kDN6" }, 118 [TTYC_KDN7] = { TTYCODE_STRING, "kDN7" }, 119 [TTYC_KEND] = { TTYCODE_STRING, "kend" }, 120 [TTYC_KEND2] = { TTYCODE_STRING, "kEND" }, 121 [TTYC_KEND3] = { TTYCODE_STRING, "kEND3" }, 122 [TTYC_KEND4] = { TTYCODE_STRING, "kEND4" }, 123 [TTYC_KEND5] = { TTYCODE_STRING, "kEND5" }, 124 [TTYC_KEND6] = { TTYCODE_STRING, "kEND6" }, 125 [TTYC_KEND7] = { TTYCODE_STRING, "kEND7" }, 126 [TTYC_KF1] = { TTYCODE_STRING, "kf1" }, 127 [TTYC_KF10] = { TTYCODE_STRING, "kf10" }, 128 [TTYC_KF11] = { TTYCODE_STRING, "kf11" }, 129 [TTYC_KF12] = { TTYCODE_STRING, "kf12" }, 130 [TTYC_KF13] = { TTYCODE_STRING, "kf13" }, 131 [TTYC_KF14] = { TTYCODE_STRING, "kf14" }, 132 [TTYC_KF15] = { TTYCODE_STRING, "kf15" }, 133 [TTYC_KF16] = { TTYCODE_STRING, "kf16" }, 134 [TTYC_KF17] = { TTYCODE_STRING, "kf17" }, 135 [TTYC_KF18] = { TTYCODE_STRING, "kf18" }, 136 [TTYC_KF19] = { TTYCODE_STRING, "kf19" }, 137 [TTYC_KF2] = { TTYCODE_STRING, "kf2" }, 138 [TTYC_KF20] = { TTYCODE_STRING, "kf20" }, 139 [TTYC_KF21] = { TTYCODE_STRING, "kf21" }, 140 [TTYC_KF22] = { TTYCODE_STRING, "kf22" }, 141 [TTYC_KF23] = { TTYCODE_STRING, "kf23" }, 142 [TTYC_KF24] = { TTYCODE_STRING, "kf24" }, 143 [TTYC_KF25] = { TTYCODE_STRING, "kf25" }, 144 [TTYC_KF26] = { TTYCODE_STRING, "kf26" }, 145 [TTYC_KF27] = { TTYCODE_STRING, "kf27" }, 146 [TTYC_KF28] = { TTYCODE_STRING, "kf28" }, 147 [TTYC_KF29] = { TTYCODE_STRING, "kf29" }, 148 [TTYC_KF3] = { TTYCODE_STRING, "kf3" }, 149 [TTYC_KF30] = { TTYCODE_STRING, "kf30" }, 150 [TTYC_KF31] = { TTYCODE_STRING, "kf31" }, 151 [TTYC_KF32] = { TTYCODE_STRING, "kf32" }, 152 [TTYC_KF33] = { TTYCODE_STRING, "kf33" }, 153 [TTYC_KF34] = { TTYCODE_STRING, "kf34" }, 154 [TTYC_KF35] = { TTYCODE_STRING, "kf35" }, 155 [TTYC_KF36] = { TTYCODE_STRING, "kf36" }, 156 [TTYC_KF37] = { TTYCODE_STRING, "kf37" }, 157 [TTYC_KF38] = { TTYCODE_STRING, "kf38" }, 158 [TTYC_KF39] = { TTYCODE_STRING, "kf39" }, 159 [TTYC_KF4] = { TTYCODE_STRING, "kf4" }, 160 [TTYC_KF40] = { TTYCODE_STRING, "kf40" }, 161 [TTYC_KF41] = { TTYCODE_STRING, "kf41" }, 162 [TTYC_KF42] = { TTYCODE_STRING, "kf42" }, 163 [TTYC_KF43] = { TTYCODE_STRING, "kf43" }, 164 [TTYC_KF44] = { TTYCODE_STRING, "kf44" }, 165 [TTYC_KF45] = { TTYCODE_STRING, "kf45" }, 166 [TTYC_KF46] = { TTYCODE_STRING, "kf46" }, 167 [TTYC_KF47] = { TTYCODE_STRING, "kf47" }, 168 [TTYC_KF48] = { TTYCODE_STRING, "kf48" }, 169 [TTYC_KF49] = { TTYCODE_STRING, "kf49" }, 170 [TTYC_KF5] = { TTYCODE_STRING, "kf5" }, 171 [TTYC_KF50] = { TTYCODE_STRING, "kf50" }, 172 [TTYC_KF51] = { TTYCODE_STRING, "kf51" }, 173 [TTYC_KF52] = { TTYCODE_STRING, "kf52" }, 174 [TTYC_KF53] = { TTYCODE_STRING, "kf53" }, 175 [TTYC_KF54] = { TTYCODE_STRING, "kf54" }, 176 [TTYC_KF55] = { TTYCODE_STRING, "kf55" }, 177 [TTYC_KF56] = { TTYCODE_STRING, "kf56" }, 178 [TTYC_KF57] = { TTYCODE_STRING, "kf57" }, 179 [TTYC_KF58] = { TTYCODE_STRING, "kf58" }, 180 [TTYC_KF59] = { TTYCODE_STRING, "kf59" }, 181 [TTYC_KF6] = { TTYCODE_STRING, "kf6" }, 182 [TTYC_KF60] = { TTYCODE_STRING, "kf60" }, 183 [TTYC_KF61] = { TTYCODE_STRING, "kf61" }, 184 [TTYC_KF62] = { TTYCODE_STRING, "kf62" }, 185 [TTYC_KF63] = { TTYCODE_STRING, "kf63" }, 186 [TTYC_KF7] = { TTYCODE_STRING, "kf7" }, 187 [TTYC_KF8] = { TTYCODE_STRING, "kf8" }, 188 [TTYC_KF9] = { TTYCODE_STRING, "kf9" }, 189 [TTYC_KHOM2] = { TTYCODE_STRING, "kHOM" }, 190 [TTYC_KHOM3] = { TTYCODE_STRING, "kHOM3" }, 191 [TTYC_KHOM4] = { TTYCODE_STRING, "kHOM4" }, 192 [TTYC_KHOM5] = { TTYCODE_STRING, "kHOM5" }, 193 [TTYC_KHOM6] = { TTYCODE_STRING, "kHOM6" }, 194 [TTYC_KHOM7] = { TTYCODE_STRING, "kHOM7" }, 195 [TTYC_KHOME] = { TTYCODE_STRING, "khome" }, 196 [TTYC_KIC2] = { TTYCODE_STRING, "kIC" }, 197 [TTYC_KIC3] = { TTYCODE_STRING, "kIC3" }, 198 [TTYC_KIC4] = { TTYCODE_STRING, "kIC4" }, 199 [TTYC_KIC5] = { TTYCODE_STRING, "kIC5" }, 200 [TTYC_KIC6] = { TTYCODE_STRING, "kIC6" }, 201 [TTYC_KIC7] = { TTYCODE_STRING, "kIC7" }, 202 [TTYC_KICH1] = { TTYCODE_STRING, "kich1" }, 203 [TTYC_KLFT2] = { TTYCODE_STRING, "kLFT" }, 204 [TTYC_KLFT3] = { TTYCODE_STRING, "kLFT3" }, 205 [TTYC_KLFT4] = { TTYCODE_STRING, "kLFT4" }, 206 [TTYC_KLFT5] = { TTYCODE_STRING, "kLFT5" }, 207 [TTYC_KLFT6] = { TTYCODE_STRING, "kLFT6" }, 208 [TTYC_KLFT7] = { TTYCODE_STRING, "kLFT7" }, 209 [TTYC_KMOUS] = { TTYCODE_STRING, "kmous" }, 210 [TTYC_KNP] = { TTYCODE_STRING, "knp" }, 211 [TTYC_KNXT2] = { TTYCODE_STRING, "kNXT" }, 212 [TTYC_KNXT3] = { TTYCODE_STRING, "kNXT3" }, 213 [TTYC_KNXT4] = { TTYCODE_STRING, "kNXT4" }, 214 [TTYC_KNXT5] = { TTYCODE_STRING, "kNXT5" }, 215 [TTYC_KNXT6] = { TTYCODE_STRING, "kNXT6" }, 216 [TTYC_KNXT7] = { TTYCODE_STRING, "kNXT7" }, 217 [TTYC_KPP] = { TTYCODE_STRING, "kpp" }, 218 [TTYC_KPRV2] = { TTYCODE_STRING, "kPRV" }, 219 [TTYC_KPRV3] = { TTYCODE_STRING, "kPRV3" }, 220 [TTYC_KPRV4] = { TTYCODE_STRING, "kPRV4" }, 221 [TTYC_KPRV5] = { TTYCODE_STRING, "kPRV5" }, 222 [TTYC_KPRV6] = { TTYCODE_STRING, "kPRV6" }, 223 [TTYC_KPRV7] = { TTYCODE_STRING, "kPRV7" }, 224 [TTYC_KRIT2] = { TTYCODE_STRING, "kRIT" }, 225 [TTYC_KRIT3] = { TTYCODE_STRING, "kRIT3" }, 226 [TTYC_KRIT4] = { TTYCODE_STRING, "kRIT4" }, 227 [TTYC_KRIT5] = { TTYCODE_STRING, "kRIT5" }, 228 [TTYC_KRIT6] = { TTYCODE_STRING, "kRIT6" }, 229 [TTYC_KRIT7] = { TTYCODE_STRING, "kRIT7" }, 230 [TTYC_KUP2] = { TTYCODE_STRING, "kUP" }, 231 [TTYC_KUP3] = { TTYCODE_STRING, "kUP3" }, 232 [TTYC_KUP4] = { TTYCODE_STRING, "kUP4" }, 233 [TTYC_KUP5] = { TTYCODE_STRING, "kUP5" }, 234 [TTYC_KUP6] = { TTYCODE_STRING, "kUP6" }, 235 [TTYC_KUP7] = { TTYCODE_STRING, "kUP7" }, 236 [TTYC_MS] = { TTYCODE_STRING, "Ms" }, 237 [TTYC_OP] = { TTYCODE_STRING, "op" }, 238 [TTYC_REV] = { TTYCODE_STRING, "rev" }, 239 [TTYC_RI] = { TTYCODE_STRING, "ri" }, 240 [TTYC_RMACS] = { TTYCODE_STRING, "rmacs" }, 241 [TTYC_RMCUP] = { TTYCODE_STRING, "rmcup" }, 242 [TTYC_RMKX] = { TTYCODE_STRING, "rmkx" }, 243 [TTYC_SE] = { TTYCODE_STRING, "Se" }, 244 [TTYC_SETAB] = { TTYCODE_STRING, "setab" }, 245 [TTYC_SETAF] = { TTYCODE_STRING, "setaf" }, 246 [TTYC_SGR0] = { TTYCODE_STRING, "sgr0" }, 247 [TTYC_SITM] = { TTYCODE_STRING, "sitm" }, 248 [TTYC_SMACS] = { TTYCODE_STRING, "smacs" }, 249 [TTYC_SMCUP] = { TTYCODE_STRING, "smcup" }, 250 [TTYC_SMKX] = { TTYCODE_STRING, "smkx" }, 251 [TTYC_SMSO] = { TTYCODE_STRING, "smso" }, 252 [TTYC_SMUL] = { TTYCODE_STRING, "smul" }, 253 [TTYC_SS] = { TTYCODE_STRING, "Ss" }, 254 [TTYC_TC] = { TTYCODE_FLAG, "Tc" }, 255 [TTYC_TSL] = { TTYCODE_STRING, "tsl" }, 256 [TTYC_VPA] = { TTYCODE_STRING, "vpa" }, 257 [TTYC_XENL] = { TTYCODE_FLAG, "xenl" }, 258 [TTYC_XT] = { TTYCODE_FLAG, "XT" }, 259 }; 260 261 u_int 262 tty_term_ncodes(void) 263 { 264 return (nitems(tty_term_codes)); 265 } 266 267 char * 268 tty_term_strip(const char *s) 269 { 270 const char *ptr; 271 static char buf[BUFSIZ]; 272 size_t len; 273 274 /* Ignore strings with no padding. */ 275 if (strchr(s, '$') == NULL) 276 return (xstrdup(s)); 277 278 len = 0; 279 for (ptr = s; *ptr != '\0'; ptr++) { 280 if (*ptr == '$' && *(ptr + 1) == '<') { 281 while (*ptr != '\0' && *ptr != '>') 282 ptr++; 283 if (*ptr == '>') 284 ptr++; 285 } 286 287 buf[len++] = *ptr; 288 if (len == (sizeof buf) - 1) 289 break; 290 } 291 buf[len] = '\0'; 292 293 return (xstrdup(buf)); 294 } 295 296 void 297 tty_term_override(struct tty_term *term, const char *overrides) 298 { 299 const struct tty_term_code_entry *ent; 300 struct tty_code *code; 301 char *termnext, *termstr; 302 char *entnext, *entstr; 303 char *s, *ptr, *val; 304 const char *errstr; 305 u_int i; 306 int n, removeflag; 307 308 s = xstrdup(overrides); 309 310 termnext = s; 311 while ((termstr = strsep(&termnext, ",")) != NULL) { 312 entnext = termstr; 313 314 entstr = strsep(&entnext, ":"); 315 if (entstr == NULL || entnext == NULL) 316 continue; 317 if (fnmatch(entstr, term->name, 0) != 0) 318 continue; 319 while ((entstr = strsep(&entnext, ":")) != NULL) { 320 if (*entstr == '\0') 321 continue; 322 323 val = NULL; 324 removeflag = 0; 325 if ((ptr = strchr(entstr, '=')) != NULL) { 326 *ptr++ = '\0'; 327 val = xstrdup(ptr); 328 if (strunvis(val, ptr) == -1) { 329 free(val); 330 val = xstrdup(ptr); 331 } 332 } else if (entstr[strlen(entstr) - 1] == '@') { 333 entstr[strlen(entstr) - 1] = '\0'; 334 removeflag = 1; 335 } else 336 val = xstrdup(""); 337 338 log_debug("%s override: %s %s", 339 term->name, entstr, removeflag ? "@" : val); 340 for (i = 0; i < tty_term_ncodes(); i++) { 341 ent = &tty_term_codes[i]; 342 if (strcmp(entstr, ent->name) != 0) 343 continue; 344 code = &term->codes[i]; 345 346 if (removeflag) { 347 code->type = TTYCODE_NONE; 348 continue; 349 } 350 switch (ent->type) { 351 case TTYCODE_NONE: 352 break; 353 case TTYCODE_STRING: 354 if (code->type == TTYCODE_STRING) 355 free(code->value.string); 356 code->value.string = xstrdup(val); 357 code->type = ent->type; 358 break; 359 case TTYCODE_NUMBER: 360 n = strtonum(val, 0, INT_MAX, &errstr); 361 if (errstr != NULL) 362 break; 363 code->value.number = n; 364 code->type = ent->type; 365 break; 366 case TTYCODE_FLAG: 367 code->value.flag = 1; 368 code->type = ent->type; 369 break; 370 } 371 } 372 373 free(val); 374 } 375 } 376 377 free(s); 378 } 379 380 struct tty_term * 381 tty_term_find(char *name, int fd, char **cause) 382 { 383 struct tty_term *term; 384 const struct tty_term_code_entry *ent; 385 struct tty_code *code; 386 u_int i; 387 int n, error; 388 char *s; 389 const char *acs; 390 391 LIST_FOREACH(term, &tty_terms, entry) { 392 if (strcmp(term->name, name) == 0) { 393 term->references++; 394 return (term); 395 } 396 } 397 398 log_debug("new term: %s", name); 399 term = xmalloc(sizeof *term); 400 term->name = xstrdup(name); 401 term->references = 1; 402 term->flags = 0; 403 term->codes = xcalloc (tty_term_ncodes(), sizeof *term->codes); 404 LIST_INSERT_HEAD(&tty_terms, term, entry); 405 406 /* Set up curses terminal. */ 407 if (setupterm(name, fd, &error) != OK) { 408 switch (error) { 409 case 1: 410 xasprintf(cause, "can't use hardcopy terminal: %s", 411 name); 412 break; 413 case 0: 414 xasprintf(cause, "missing or unsuitable terminal: %s", 415 name); 416 break; 417 case -1: 418 xasprintf(cause, "can't find terminfo database"); 419 break; 420 default: 421 xasprintf(cause, "unknown error"); 422 break; 423 } 424 goto error; 425 } 426 427 /* Fill in codes. */ 428 for (i = 0; i < tty_term_ncodes(); i++) { 429 ent = &tty_term_codes[i]; 430 431 code = &term->codes[i]; 432 code->type = TTYCODE_NONE; 433 switch (ent->type) { 434 case TTYCODE_NONE: 435 break; 436 case TTYCODE_STRING: 437 s = tigetstr((char *) ent->name); 438 if (s == NULL || s == (char *) -1) 439 break; 440 code->type = TTYCODE_STRING; 441 code->value.string = tty_term_strip(s); 442 break; 443 case TTYCODE_NUMBER: 444 n = tigetnum((char *) ent->name); 445 if (n == -1 || n == -2) 446 break; 447 code->type = TTYCODE_NUMBER; 448 code->value.number = n; 449 break; 450 case TTYCODE_FLAG: 451 n = tigetflag((char *) ent->name); 452 if (n == -1) 453 break; 454 code->type = TTYCODE_FLAG; 455 code->value.flag = n; 456 break; 457 } 458 } 459 460 /* Apply terminal overrides. */ 461 s = options_get_string(global_options, "terminal-overrides"); 462 tty_term_override(term, s); 463 464 /* Delete curses data. */ 465 del_curterm(cur_term); 466 467 /* These are always required. */ 468 if (!tty_term_has(term, TTYC_CLEAR)) { 469 xasprintf(cause, "terminal does not support clear"); 470 goto error; 471 } 472 if (!tty_term_has(term, TTYC_CUP)) { 473 xasprintf(cause, "terminal does not support cup"); 474 goto error; 475 } 476 477 /* These can be emulated so one of the two is required. */ 478 if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) { 479 xasprintf(cause, "terminal does not support cud1 or cud"); 480 goto error; 481 } 482 483 /* Figure out if we have 256. */ 484 if (tty_term_number(term, TTYC_COLORS) == 256) 485 term->flags |= TERM_256COLOURS; 486 487 /* 488 * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1 489 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1). 490 * 491 * This is irritating, most notably because it is impossible to write 492 * to the very bottom-right of the screen without scrolling. 493 * 494 * Flag the terminal here and apply some workarounds in other places to 495 * do the best possible. 496 */ 497 if (!tty_term_flag(term, TTYC_XENL)) 498 term->flags |= TERM_EARLYWRAP; 499 500 /* Generate ACS table. If none is present, use nearest ASCII. */ 501 memset(term->acs, 0, sizeof term->acs); 502 if (tty_term_has(term, TTYC_ACSC)) 503 acs = tty_term_string(term, TTYC_ACSC); 504 else 505 acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y<z>~."; 506 for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2) 507 term->acs[(u_char) acs[0]][0] = acs[1]; 508 509 /* On terminals with xterm titles (XT), fill in tsl and fsl. */ 510 if (tty_term_flag(term, TTYC_XT) && 511 !tty_term_has(term, TTYC_TSL) && 512 !tty_term_has(term, TTYC_FSL)) { 513 code = &term->codes[TTYC_TSL]; 514 code->value.string = xstrdup("\033]0;"); 515 code->type = TTYCODE_STRING; 516 code = &term->codes[TTYC_FSL]; 517 code->value.string = xstrdup("\007"); 518 code->type = TTYCODE_STRING; 519 } 520 521 return (term); 522 523 error: 524 tty_term_free(term); 525 return (NULL); 526 } 527 528 void 529 tty_term_free(struct tty_term *term) 530 { 531 u_int i; 532 533 if (--term->references != 0) 534 return; 535 536 LIST_REMOVE(term, entry); 537 538 for (i = 0; i < tty_term_ncodes(); i++) { 539 if (term->codes[i].type == TTYCODE_STRING) 540 free(term->codes[i].value.string); 541 } 542 free(term->codes); 543 544 free(term->name); 545 free(term); 546 } 547 548 int 549 tty_term_has(struct tty_term *term, enum tty_code_code code) 550 { 551 return (term->codes[code].type != TTYCODE_NONE); 552 } 553 554 const char * 555 tty_term_string(struct tty_term *term, enum tty_code_code code) 556 { 557 if (!tty_term_has(term, code)) 558 return (""); 559 if (term->codes[code].type != TTYCODE_STRING) 560 fatalx("not a string: %d", code); 561 return (term->codes[code].value.string); 562 } 563 564 const char * 565 tty_term_string1(struct tty_term *term, enum tty_code_code code, int a) 566 { 567 return (tparm((char *) tty_term_string(term, code), a)); 568 } 569 570 const char * 571 tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b) 572 { 573 return (tparm((char *) tty_term_string(term, code), a, b)); 574 } 575 576 const char * 577 tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a) 578 { 579 return (tparm((char *) tty_term_string(term, code), a)); 580 } 581 582 const char * 583 tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a, 584 const void *b) 585 { 586 return (tparm((char *) tty_term_string(term, code), a, b)); 587 } 588 589 int 590 tty_term_number(struct tty_term *term, enum tty_code_code code) 591 { 592 if (!tty_term_has(term, code)) 593 return (0); 594 if (term->codes[code].type != TTYCODE_NUMBER) 595 fatalx("not a number: %d", code); 596 return (term->codes[code].value.number); 597 } 598 599 int 600 tty_term_flag(struct tty_term *term, enum tty_code_code code) 601 { 602 if (!tty_term_has(term, code)) 603 return (0); 604 if (term->codes[code].type != TTYCODE_FLAG) 605 fatalx("not a flag: %d", code); 606 return (term->codes[code].value.flag); 607 } 608 609 const char * 610 tty_term_describe(struct tty_term *term, enum tty_code_code code) 611 { 612 static char s[256]; 613 char out[128]; 614 615 switch (term->codes[code].type) { 616 case TTYCODE_NONE: 617 xsnprintf(s, sizeof s, "%4u: %s: [missing]", 618 code, tty_term_codes[code].name); 619 break; 620 case TTYCODE_STRING: 621 strnvis(out, term->codes[code].value.string, sizeof out, 622 VIS_OCTAL|VIS_TAB|VIS_NL); 623 xsnprintf(s, sizeof s, "%4u: %s: (string) %s", 624 code, tty_term_codes[code].name, 625 out); 626 break; 627 case TTYCODE_NUMBER: 628 xsnprintf(s, sizeof s, "%4u: %s: (number) %d", 629 code, tty_term_codes[code].name, 630 term->codes[code].value.number); 631 break; 632 case TTYCODE_FLAG: 633 xsnprintf(s, sizeof s, "%4u: %s: (flag) %s", 634 code, tty_term_codes[code].name, 635 term->codes[code].value.flag ? "true" : "false"); 636 break; 637 } 638 return (s); 639 } 640