| 1 | /* $NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $ */
|
|---|
| 2 |
|
|---|
| 3 | /*-
|
|---|
| 4 | * Copyright (c) 1991, 1993
|
|---|
| 5 | * The Regents of the University of California. All rights reserved.
|
|---|
| 6 | *
|
|---|
| 7 | * This code is derived from software contributed to Berkeley by
|
|---|
| 8 | * Kenneth Almquist.
|
|---|
| 9 | *
|
|---|
| 10 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 11 | * modification, are permitted provided that the following conditions
|
|---|
| 12 | * are met:
|
|---|
| 13 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 14 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 15 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 16 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 17 | * documentation and/or other materials provided with the distribution.
|
|---|
| 18 | * 3. Neither the name of the University nor the names of its contributors
|
|---|
| 19 | * may be used to endorse or promote products derived from this software
|
|---|
| 20 | * without specific prior written permission.
|
|---|
| 21 | *
|
|---|
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 32 | * SUCH DAMAGE.
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #ifdef HAVE_SYS_CDEFS_H
|
|---|
| 36 | #include <sys/cdefs.h>
|
|---|
| 37 | #endif
|
|---|
| 38 | #ifndef lint
|
|---|
| 39 | #if 0
|
|---|
| 40 | static char sccsid[] = "@(#)show.c 8.3 (Berkeley) 5/4/95";
|
|---|
| 41 | #else
|
|---|
| 42 | __RCSID("$NetBSD: show.c,v 1.26 2003/11/14 10:46:13 dsl Exp $");
|
|---|
| 43 | #endif
|
|---|
| 44 | #endif /* not lint */
|
|---|
| 45 |
|
|---|
| 46 | #include <stdio.h>
|
|---|
| 47 | #include <stdarg.h>
|
|---|
| 48 | #include <stdlib.h>
|
|---|
| 49 |
|
|---|
| 50 | #include "shell.h"
|
|---|
| 51 | #include "parser.h"
|
|---|
| 52 | #include "nodes.h"
|
|---|
| 53 | #include "mystring.h"
|
|---|
| 54 | #include "show.h"
|
|---|
| 55 | #include "options.h"
|
|---|
| 56 |
|
|---|
| 57 |
|
|---|
| 58 | #ifdef DEBUG
|
|---|
| 59 | static void shtree(union node *, int, char *, FILE*);
|
|---|
| 60 | static void shcmd(union node *, FILE *);
|
|---|
| 61 | static void sharg(union node *, FILE *);
|
|---|
| 62 | static void indent(int, char *, FILE *);
|
|---|
| 63 | static void trstring(shinstance *, char *);
|
|---|
| 64 |
|
|---|
| 65 |
|
|---|
| 66 | void
|
|---|
| 67 | showtree(shinstance *psh, union node *n)
|
|---|
| 68 | {
|
|---|
| 69 | trputs(psh, "showtree called\n");
|
|---|
| 70 | shtree(n, 1, NULL, stdout);
|
|---|
| 71 | }
|
|---|
| 72 |
|
|---|
| 73 |
|
|---|
| 74 | static void
|
|---|
| 75 | shtree(union node *n, int ind, char *pfx, FILE *fp)
|
|---|
| 76 | {
|
|---|
| 77 | struct nodelist *lp;
|
|---|
| 78 | const char *s;
|
|---|
| 79 |
|
|---|
| 80 | if (n == NULL)
|
|---|
| 81 | return;
|
|---|
| 82 |
|
|---|
| 83 | indent(ind, pfx, fp);
|
|---|
| 84 | switch(n->type) {
|
|---|
| 85 | case NSEMI:
|
|---|
| 86 | s = "; ";
|
|---|
| 87 | goto binop;
|
|---|
| 88 | case NAND:
|
|---|
| 89 | s = " && ";
|
|---|
| 90 | goto binop;
|
|---|
| 91 | case NOR:
|
|---|
| 92 | s = " || ";
|
|---|
| 93 | binop:
|
|---|
| 94 | shtree(n->nbinary.ch1, ind, NULL, fp);
|
|---|
| 95 | /* if (ind < 0) */
|
|---|
| 96 | fputs(s, fp);
|
|---|
| 97 | shtree(n->nbinary.ch2, ind, NULL, fp);
|
|---|
| 98 | break;
|
|---|
| 99 | case NCMD:
|
|---|
| 100 | shcmd(n, fp);
|
|---|
| 101 | if (ind >= 0)
|
|---|
| 102 | putc('\n', fp);
|
|---|
| 103 | break;
|
|---|
| 104 | case NPIPE:
|
|---|
| 105 | for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
|
|---|
| 106 | shcmd(lp->n, fp);
|
|---|
| 107 | if (lp->next)
|
|---|
| 108 | fputs(" | ", fp);
|
|---|
| 109 | }
|
|---|
| 110 | if (n->npipe.backgnd)
|
|---|
| 111 | fputs(" &", fp);
|
|---|
| 112 | if (ind >= 0)
|
|---|
| 113 | putc('\n', fp);
|
|---|
| 114 | break;
|
|---|
| 115 | default:
|
|---|
| 116 | fprintf(fp, "<node type %d>", n->type);
|
|---|
| 117 | if (ind >= 0)
|
|---|
| 118 | putc('\n', fp);
|
|---|
| 119 | break;
|
|---|
| 120 | }
|
|---|
| 121 | }
|
|---|
| 122 |
|
|---|
| 123 |
|
|---|
| 124 |
|
|---|
| 125 | static void
|
|---|
| 126 | shcmd(union node *cmd, FILE *fp)
|
|---|
| 127 | {
|
|---|
| 128 | union node *np;
|
|---|
| 129 | int first;
|
|---|
| 130 | const char *s;
|
|---|
| 131 | int dftfd;
|
|---|
| 132 |
|
|---|
| 133 | first = 1;
|
|---|
| 134 | for (np = cmd->ncmd.args ; np ; np = np->narg.next) {
|
|---|
| 135 | if (! first)
|
|---|
| 136 | putchar(' ');
|
|---|
| 137 | sharg(np, fp);
|
|---|
| 138 | first = 0;
|
|---|
| 139 | }
|
|---|
| 140 | for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) {
|
|---|
| 141 | if (! first)
|
|---|
| 142 | putchar(' ');
|
|---|
| 143 | switch (np->nfile.type) {
|
|---|
| 144 | case NTO: s = ">"; dftfd = 1; break;
|
|---|
| 145 | case NCLOBBER: s = ">|"; dftfd = 1; break;
|
|---|
| 146 | case NAPPEND: s = ">>"; dftfd = 1; break;
|
|---|
| 147 | case NTOFD: s = ">&"; dftfd = 1; break;
|
|---|
| 148 | case NFROM: s = "<"; dftfd = 0; break;
|
|---|
| 149 | case NFROMFD: s = "<&"; dftfd = 0; break;
|
|---|
| 150 | case NFROMTO: s = "<>"; dftfd = 0; break;
|
|---|
| 151 | default: s = "*error*"; dftfd = 0; break;
|
|---|
| 152 | }
|
|---|
| 153 | if (np->nfile.fd != dftfd)
|
|---|
| 154 | fprintf(fp, "%d", np->nfile.fd);
|
|---|
| 155 | fputs(s, fp);
|
|---|
| 156 | if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) {
|
|---|
| 157 | fprintf(fp, "%d", np->ndup.dupfd);
|
|---|
| 158 | } else {
|
|---|
| 159 | sharg(np->nfile.fname, fp);
|
|---|
| 160 | }
|
|---|
| 161 | first = 0;
|
|---|
| 162 | }
|
|---|
| 163 | }
|
|---|
| 164 |
|
|---|
| 165 |
|
|---|
| 166 |
|
|---|
| 167 | static void
|
|---|
| 168 | sharg(union node *arg, FILE *fp)
|
|---|
| 169 | {
|
|---|
| 170 | char *p;
|
|---|
| 171 | struct nodelist *bqlist;
|
|---|
| 172 | int subtype;
|
|---|
| 173 |
|
|---|
| 174 | if (arg->type != NARG) {
|
|---|
| 175 | printf("<node type %d>\n", arg->type);
|
|---|
| 176 | abort();
|
|---|
| 177 | }
|
|---|
| 178 | bqlist = arg->narg.backquote;
|
|---|
| 179 | for (p = arg->narg.text ; *p ; p++) {
|
|---|
| 180 | switch (*p) {
|
|---|
| 181 | case CTLESC:
|
|---|
| 182 | putc(*++p, fp);
|
|---|
| 183 | break;
|
|---|
| 184 | case CTLVAR:
|
|---|
| 185 | putc('$', fp);
|
|---|
| 186 | putc('{', fp);
|
|---|
| 187 | subtype = *++p;
|
|---|
| 188 | if (subtype == VSLENGTH)
|
|---|
| 189 | putc('#', fp);
|
|---|
| 190 |
|
|---|
| 191 | while (*p != '=')
|
|---|
| 192 | putc(*p++, fp);
|
|---|
| 193 |
|
|---|
| 194 | if (subtype & VSNUL)
|
|---|
| 195 | putc(':', fp);
|
|---|
| 196 |
|
|---|
| 197 | switch (subtype & VSTYPE) {
|
|---|
| 198 | case VSNORMAL:
|
|---|
| 199 | putc('}', fp);
|
|---|
| 200 | break;
|
|---|
| 201 | case VSMINUS:
|
|---|
| 202 | putc('-', fp);
|
|---|
| 203 | break;
|
|---|
| 204 | case VSPLUS:
|
|---|
| 205 | putc('+', fp);
|
|---|
| 206 | break;
|
|---|
| 207 | case VSQUESTION:
|
|---|
| 208 | putc('?', fp);
|
|---|
| 209 | break;
|
|---|
| 210 | case VSASSIGN:
|
|---|
| 211 | putc('=', fp);
|
|---|
| 212 | break;
|
|---|
| 213 | case VSTRIMLEFT:
|
|---|
| 214 | putc('#', fp);
|
|---|
| 215 | break;
|
|---|
| 216 | case VSTRIMLEFTMAX:
|
|---|
| 217 | putc('#', fp);
|
|---|
| 218 | putc('#', fp);
|
|---|
| 219 | break;
|
|---|
| 220 | case VSTRIMRIGHT:
|
|---|
| 221 | putc('%', fp);
|
|---|
| 222 | break;
|
|---|
| 223 | case VSTRIMRIGHTMAX:
|
|---|
| 224 | putc('%', fp);
|
|---|
| 225 | putc('%', fp);
|
|---|
| 226 | break;
|
|---|
| 227 | case VSLENGTH:
|
|---|
| 228 | break;
|
|---|
| 229 | default:
|
|---|
| 230 | printf("<subtype %d>", subtype);
|
|---|
| 231 | }
|
|---|
| 232 | break;
|
|---|
| 233 | case CTLENDVAR:
|
|---|
| 234 | putc('}', fp);
|
|---|
| 235 | break;
|
|---|
| 236 | case CTLBACKQ:
|
|---|
| 237 | case CTLBACKQ|CTLQUOTE:
|
|---|
| 238 | putc('$', fp);
|
|---|
| 239 | putc('(', fp);
|
|---|
| 240 | shtree(bqlist->n, -1, NULL, fp);
|
|---|
| 241 | putc(')', fp);
|
|---|
| 242 | break;
|
|---|
| 243 | default:
|
|---|
| 244 | putc(*p, fp);
|
|---|
| 245 | break;
|
|---|
| 246 | }
|
|---|
| 247 | }
|
|---|
| 248 | }
|
|---|
| 249 |
|
|---|
| 250 |
|
|---|
| 251 | static void
|
|---|
| 252 | indent(int amount, char *pfx, FILE *fp)
|
|---|
| 253 | {
|
|---|
| 254 | int i;
|
|---|
| 255 |
|
|---|
| 256 | for (i = 0 ; i < amount ; i++) {
|
|---|
| 257 | if (pfx && i == amount - 1)
|
|---|
| 258 | fputs(pfx, fp);
|
|---|
| 259 | putc('\t', fp);
|
|---|
| 260 | }
|
|---|
| 261 | }
|
|---|
| 262 | #endif
|
|---|
| 263 |
|
|---|
| 264 |
|
|---|
| 265 |
|
|---|
| 266 | /*
|
|---|
| 267 | * Debugging stuff.
|
|---|
| 268 | */
|
|---|
| 269 |
|
|---|
| 270 |
|
|---|
| 271 | FILE *tracefile;
|
|---|
| 272 |
|
|---|
| 273 |
|
|---|
| 274 | #ifdef DEBUG
|
|---|
| 275 | void
|
|---|
| 276 | trputc(shinstance *psh, int c)
|
|---|
| 277 | {
|
|---|
| 278 | if (debug(psh) != 1)
|
|---|
| 279 | return;
|
|---|
| 280 | putc(c, tracefile);
|
|---|
| 281 | }
|
|---|
| 282 | #endif
|
|---|
| 283 |
|
|---|
| 284 | void
|
|---|
| 285 | trace(shinstance *psh, const char *fmt, ...)
|
|---|
| 286 | {
|
|---|
| 287 | #ifdef DEBUG
|
|---|
| 288 | va_list va;
|
|---|
| 289 |
|
|---|
| 290 | if (debug(psh) != 1)
|
|---|
| 291 | return;
|
|---|
| 292 | fprintf(tracefile, "[%d] ", sh_getpid(psh));
|
|---|
| 293 | va_start(va, fmt);
|
|---|
| 294 | (void) vfprintf(tracefile, fmt, va);
|
|---|
| 295 | va_end(va);
|
|---|
| 296 | #endif
|
|---|
| 297 | }
|
|---|
| 298 |
|
|---|
| 299 | void
|
|---|
| 300 | tracev(shinstance *psh, const char *fmt, va_list va)
|
|---|
| 301 | {
|
|---|
| 302 | #ifdef DEBUG
|
|---|
| 303 | if (debug(psh) != 1)
|
|---|
| 304 | return;
|
|---|
| 305 | fprintf(tracefile, "[%d] ", sh_getpid(psh));
|
|---|
| 306 | (void) vfprintf(tracefile, fmt, va);
|
|---|
| 307 | #endif
|
|---|
| 308 | }
|
|---|
| 309 |
|
|---|
| 310 |
|
|---|
| 311 | #ifdef DEBUG
|
|---|
| 312 | void
|
|---|
| 313 | trputs(shinstance *psh, const char *s)
|
|---|
| 314 | {
|
|---|
| 315 | if (debug(psh) != 1)
|
|---|
| 316 | return;
|
|---|
| 317 | fputs(s, tracefile);
|
|---|
| 318 | }
|
|---|
| 319 |
|
|---|
| 320 |
|
|---|
| 321 | static void
|
|---|
| 322 | trstring(shinstance *psh, char *s)
|
|---|
| 323 | {
|
|---|
| 324 | char *p;
|
|---|
| 325 | char c;
|
|---|
| 326 |
|
|---|
| 327 | if (debug(psh) != 1)
|
|---|
| 328 | return;
|
|---|
| 329 | putc('"', tracefile);
|
|---|
| 330 | for (p = s ; *p ; p++) {
|
|---|
| 331 | switch (*p) {
|
|---|
| 332 | case '\n': c = 'n'; goto backslash;
|
|---|
| 333 | case '\t': c = 't'; goto backslash;
|
|---|
| 334 | case '\r': c = 'r'; goto backslash;
|
|---|
| 335 | case '"': c = '"'; goto backslash;
|
|---|
| 336 | case '\\': c = '\\'; goto backslash;
|
|---|
| 337 | case CTLESC: c = 'e'; goto backslash;
|
|---|
| 338 | case CTLVAR: c = 'v'; goto backslash;
|
|---|
| 339 | case CTLVAR+CTLQUOTE: c = 'V'; goto backslash;
|
|---|
| 340 | case CTLBACKQ: c = 'q'; goto backslash;
|
|---|
| 341 | case CTLBACKQ+CTLQUOTE: c = 'Q'; goto backslash;
|
|---|
| 342 | backslash: putc('\\', tracefile);
|
|---|
| 343 | putc(c, tracefile);
|
|---|
| 344 | break;
|
|---|
| 345 | default:
|
|---|
| 346 | if (*p >= ' ' && *p <= '~')
|
|---|
| 347 | putc(*p, tracefile);
|
|---|
| 348 | else {
|
|---|
| 349 | putc('\\', tracefile);
|
|---|
| 350 | putc(*p >> 6 & 03, tracefile);
|
|---|
| 351 | putc(*p >> 3 & 07, tracefile);
|
|---|
| 352 | putc(*p & 07, tracefile);
|
|---|
| 353 | }
|
|---|
| 354 | break;
|
|---|
| 355 | }
|
|---|
| 356 | }
|
|---|
| 357 | putc('"', tracefile);
|
|---|
| 358 | }
|
|---|
| 359 | #endif
|
|---|
| 360 |
|
|---|
| 361 |
|
|---|
| 362 | void
|
|---|
| 363 | trargs(shinstance *psh, char **ap)
|
|---|
| 364 | {
|
|---|
| 365 | #ifdef DEBUG
|
|---|
| 366 | if (debug(psh) != 1)
|
|---|
| 367 | return;
|
|---|
| 368 | while (*ap) {
|
|---|
| 369 | trstring(psh, *ap++);
|
|---|
| 370 | if (*ap)
|
|---|
| 371 | putc(' ', tracefile);
|
|---|
| 372 | else
|
|---|
| 373 | putc('\n', tracefile);
|
|---|
| 374 | }
|
|---|
| 375 | #endif
|
|---|
| 376 | }
|
|---|
| 377 |
|
|---|
| 378 |
|
|---|
| 379 | #ifdef DEBUG
|
|---|
| 380 | void
|
|---|
| 381 | opentrace(shinstance *psh)
|
|---|
| 382 | {
|
|---|
| 383 | char s[100];
|
|---|
| 384 | #if defined(O_APPEND) && !defined(_MSC_VER)
|
|---|
| 385 | int flags;
|
|---|
| 386 | #endif
|
|---|
| 387 |
|
|---|
| 388 | if (debug(psh) != 1) {
|
|---|
| 389 | if (tracefile)
|
|---|
| 390 | fflush(tracefile);
|
|---|
| 391 | /* leave open because libedit might be using it */
|
|---|
| 392 | return;
|
|---|
| 393 | }
|
|---|
| 394 | #ifdef not_this_way
|
|---|
| 395 | {
|
|---|
| 396 | char *p;
|
|---|
| 397 | if ((p = getenv("HOME")) == NULL) {
|
|---|
| 398 | if (sh_geteuid(psh) == 0)
|
|---|
| 399 | p = "/";
|
|---|
| 400 | else
|
|---|
| 401 | p = "/tmp";
|
|---|
| 402 | }
|
|---|
| 403 | scopy(p, s);
|
|---|
| 404 | strcat(s, "/trace");
|
|---|
| 405 | }
|
|---|
| 406 | #else
|
|---|
| 407 | scopy("./trace", s);
|
|---|
| 408 | #endif /* not_this_way */
|
|---|
| 409 | if (tracefile) {
|
|---|
| 410 | if (!freopen(s, "a", tracefile)) {
|
|---|
| 411 | fprintf(stderr, "Can't re-open %s\n", s);
|
|---|
| 412 | debug(psh) = 0;
|
|---|
| 413 | return;
|
|---|
| 414 | }
|
|---|
| 415 | } else {
|
|---|
| 416 | if ((tracefile = fopen(s, "a")) == NULL) {
|
|---|
| 417 | fprintf(stderr, "Can't open %s\n", s);
|
|---|
| 418 | debug(psh) = 0;
|
|---|
| 419 | return;
|
|---|
| 420 | }
|
|---|
| 421 | }
|
|---|
| 422 | #if defined(O_APPEND) && !defined(_MSC_VER)
|
|---|
| 423 | if ((flags = shfile_fcntl(&psh->fdtab, fileno(tracefile), F_GETFL, 0)) >= 0)
|
|---|
| 424 | shfile_fcntl(&psh->fdtab, fileno(tracefile), F_SETFL, flags | O_APPEND);
|
|---|
| 425 | #endif
|
|---|
| 426 | setvbuf(tracefile, (char *)NULL, _IOLBF, 0); //setlinebuf(tracefile);
|
|---|
| 427 | fputs("\nTracing started.\n", tracefile);
|
|---|
| 428 | }
|
|---|
| 429 | #endif /* DEBUG */
|
|---|
