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-rw-r--r--package/toolbox/src/sed/main.c523
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diff --git a/package/toolbox/src/sed/main.c b/package/toolbox/src/sed/main.c
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+/* $OpenBSD: main.c,v 1.35 2017/08/01 18:05:53 martijn Exp $ */
+
+/*-
+ * Copyright (c) 2016, 2017
+ * mirabilos <m@mirbsd.org>
+ * Copyright (c) 1992 Diomidis Spinellis.
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Diomidis Spinellis of Imperial College, University of London.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <regex.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <libgen.h>
+
+#include "defs.h"
+#include "extern.h"
+
+__RCSID("$MirOS: src/usr.bin/sed/main.c,v 1.3 2017/11/20 01:23:57 tg Exp $");
+
+/*
+ * Linked list of units (strings and files) to be compiled
+ */
+struct s_compunit {
+ struct s_compunit *next;
+ enum e_cut {CU_FILE, CU_STRING} type;
+ char *s; /* Pointer to string or fname */
+};
+
+/*
+ * Linked list pointer to compilation units and pointer to current
+ * next pointer.
+ */
+static struct s_compunit *script, **cu_nextp = &script;
+
+/*
+ * Linked list of files to be processed
+ */
+struct s_flist {
+ char *fname;
+ struct s_flist *next;
+};
+
+/*
+ * Linked list pointer to files and pointer to current
+ * next pointer.
+ */
+static struct s_flist *files, **fl_nextp = &files;
+
+FILE *infile; /* Current input file */
+FILE *outfile; /* Current output file */
+
+int Eflag, aflag, eflag, nflag;
+static int rval; /* Exit status */
+
+/*
+ * Current file and line number; line numbers restart across compilation
+ * units, but span across input files. The latter is optional if editing
+ * in place.
+ */
+const char *fname; /* File name. */
+const char *outfname; /* Output file name */
+static char oldfname[PATH_MAX]; /* Old file name (for in-place editing) */
+static char tmpfname[PATH_MAX]; /* Temporary file name (for in-place editing) */
+const char *inplace; /* Inplace edit file extension */
+u_long linenum;
+
+static void add_compunit(enum e_cut, char *);
+static void add_file(char *);
+static int next_files_have_lines(void);
+
+int termwidth;
+
+int pledge_wpath, pledge_rpath;
+
+int
+main(int argc, char *argv[])
+{
+ int c, fflag;
+
+ fflag = 0;
+ inplace = NULL;
+ while ((c = getopt(argc, argv, "Eae:f:i::nru")) != -1)
+ switch (c) {
+ case 'E':
+ case 'r':
+ Eflag = 1;
+ break;
+ case 'a':
+ aflag = 1;
+ break;
+ case 'e':
+ eflag = 1;
+ add_compunit(CU_STRING, optarg);
+ break;
+ case 'f':
+ fflag = 1;
+ add_compunit(CU_FILE, optarg);
+ break;
+ case 'i':
+ inplace = optarg ? optarg : "";
+ break;
+ case 'n':
+ nflag = 1;
+ break;
+ case 'u':
+ setvbuf(stdout, NULL, _IOLBF, 0);
+ break;
+ default:
+ case '?':
+ (void)fprintf(stderr,
+ "usage: sed [-aEnru] [-i[extension]] command [file ...]\n"
+ " sed [-aEnru] [-e command] [-f command_file] [-i[extension]] [file ...]\n");
+ exit(1);
+ }
+ argc -= optind;
+ argv += optind;
+
+ termwidth = 60;
+
+#if defined(__OpenBSD__) && !defined(__MirBSD__)
+ if (inplace != NULL) {
+ if (pledge("stdio rpath wpath cpath fattr chown", NULL) == -1)
+ error(FATAL, "pledge: %s", strerror(errno));
+ } else {
+ if (pledge("stdio rpath wpath cpath", NULL) == -1)
+ error(FATAL, "pledge: %s", strerror(errno));
+ }
+#endif
+
+ /* First usage case; script is the first arg */
+ if (!eflag && !fflag && *argv) {
+ add_compunit(CU_STRING, *argv);
+ argv++;
+ }
+
+ compile();
+
+ /* Continue with first and start second usage */
+ if (*argv) {
+#if defined(__OpenBSD__) && !defined(__MirBSD__)
+ if (!pledge_wpath && inplace == NULL) {
+ if (pledge("stdio rpath", NULL) == -1)
+ error(FATAL, "pledge: %s", strerror(errno));
+ }
+#endif
+ for (; *argv; argv++)
+ add_file(*argv);
+ } else {
+#if defined(__OpenBSD__) && !defined(__MirBSD__)
+ if (!pledge_wpath && !pledge_rpath) {
+ if (pledge("stdio", NULL) == -1)
+ error(FATAL, "pledge: %s", strerror(errno));
+ } else if (pledge_rpath) {
+ if (pledge("stdio rpath", NULL) == -1)
+ error(FATAL, "pledge: %s", strerror(errno));
+ } else if (pledge_wpath) {
+ if (pledge("stdio wpath cpath", NULL) == -1)
+ error(FATAL, "pledge: %s", strerror(errno));
+ }
+#endif
+ add_file(NULL);
+ }
+ process();
+ cfclose(prog, NULL);
+ if (fclose(stdout))
+ error(FATAL, "stdout: %s", strerror(errno));
+ exit (rval);
+}
+
+/*
+ * Like fgets, but go through the chain of compilation units chaining them
+ * together. Empty strings and files are ignored.
+ */
+char *
+cu_fgets(char **outbuf, size_t *outsize)
+{
+ static enum {ST_EOF, ST_FILE, ST_STRING} state = ST_EOF;
+ static FILE *f; /* Current open file */
+ static char *s; /* Current pointer inside string */
+ static char string_ident[30];
+ size_t len;
+ char *p;
+
+ if (*outbuf == NULL)
+ *outsize = 0;
+
+again:
+ switch (state) {
+ case ST_EOF:
+ if (script == NULL)
+ goto cu_fgets_nilreturn;
+ linenum = 0;
+ switch (script->type) {
+ case CU_FILE:
+ if ((f = fopen(script->s, "r")) == NULL)
+ error(FATAL,
+ "%s: %s", script->s, strerror(errno));
+ fname = script->s;
+ state = ST_FILE;
+ goto again;
+ case CU_STRING:
+ if (((size_t)snprintf(string_ident,
+ sizeof(string_ident), "\"%s\"", script->s)) >=
+ sizeof(string_ident))
+ strlcpy(string_ident +
+ sizeof(string_ident) - 6, " ...\"", 5);
+ fname = string_ident;
+ s = script->s;
+ state = ST_STRING;
+ goto again;
+ }
+ case ST_FILE:
+ if ((p = fgetln(f, &len)) != NULL) {
+ linenum++;
+ if (len >= *outsize) {
+ free(*outbuf);
+ *outsize = ROUNDLEN(len + 1);
+ *outbuf = xmalloc(*outsize);
+ }
+ memcpy(*outbuf, p, len);
+ (*outbuf)[len] = '\0';
+ if (linenum == 1 && p[0] == '#' && p[1] == 'n')
+ nflag = 1;
+ return (*outbuf);
+ }
+ script = script->next;
+ (void)fclose(f);
+ state = ST_EOF;
+ goto again;
+ case ST_STRING:
+ if (linenum == 0 && s[0] == '#' && s[1] == 'n')
+ nflag = 1;
+ p = *outbuf;
+ len = *outsize;
+ for (;;) {
+ if (len <= 1) {
+ *outbuf = xrealloc(*outbuf,
+ *outsize + _POSIX2_LINE_MAX);
+ p = *outbuf + *outsize - len;
+ len += _POSIX2_LINE_MAX;
+ *outsize += _POSIX2_LINE_MAX;
+ }
+ switch (*s) {
+ case '\0':
+ state = ST_EOF;
+ if (s == script->s) {
+ script = script->next;
+ goto again;
+ } else {
+ script = script->next;
+ *p = '\0';
+ linenum++;
+ return (*outbuf);
+ }
+ case '\n':
+ *p++ = '\n';
+ *p = '\0';
+ s++;
+ linenum++;
+ return (*outbuf);
+ default:
+ *p++ = *s++;
+ len--;
+ }
+ }
+ }
+ /* NOTREACHED */
+ /* but GCC doesn't care, so: */
+ cu_fgets_nilreturn:
+ return (NULL);
+}
+
+/*
+ * Like fgets, but go through the list of files chaining them together.
+ * Set len to the length of the line.
+ */
+int
+mf_fgets(SPACE *sp, enum e_spflag spflag)
+{
+ struct stat sb;
+ size_t len;
+ char *p;
+ int c, fd;
+ static int firstfile;
+
+ if (infile == NULL) {
+ /* stdin? */
+ if (files->fname == NULL) {
+ if (inplace != NULL)
+ error(FATAL, "-i may not be used with stdin");
+ infile = stdin;
+ fname = "stdin";
+ outfile = stdout;
+ outfname = "stdout";
+ }
+
+ firstfile = 1;
+ }
+
+ for (;;) {
+ if (infile != NULL && (c = getc(infile)) != EOF) {
+ (void)ungetc(c, infile);
+ break;
+ }
+ /* If we are here then either eof or no files are open yet */
+ if (infile == stdin) {
+ sp->len = 0;
+ return (0);
+ }
+ if (infile != NULL) {
+ fclose(infile);
+ if (*oldfname != '\0') {
+ if (rename(fname, oldfname) != 0) {
+ warning("rename()");
+ unlink(tmpfname);
+ exit(1);
+ }
+ *oldfname = '\0';
+ }
+ if (*tmpfname != '\0') {
+ if (outfile != NULL && outfile != stdout)
+ fclose(outfile);
+ outfile = NULL;
+ rename(tmpfname, fname);
+ *tmpfname = '\0';
+ }
+ outfname = NULL;
+ }
+ if (firstfile == 0)
+ files = files->next;
+ else
+ firstfile = 0;
+ if (files == NULL) {
+ sp->len = 0;
+ return (0);
+ }
+ fname = files->fname;
+ if (inplace != NULL) {
+ char *tmpdirname;
+
+ if (lstat(fname, &sb) != 0)
+ error(FATAL, "%s: %s", fname,
+ strerror(errno ? errno : EIO));
+ if (!S_ISREG(sb.st_mode))
+ error(FATAL, "%s: %s %s", fname,
+ "in-place editing only",
+ "works for regular files");
+ if (*inplace != '\0') {
+ strlcpy(oldfname, fname,
+ sizeof(oldfname));
+ len = strlcat(oldfname, inplace,
+ sizeof(oldfname));
+ if (len > sizeof(oldfname))
+ error(FATAL, "%s: name too long", fname);
+ }
+ len = snprintf(tmpfname, sizeof(tmpfname), "%s/sedXXXXXXXXXX",
+ dirname(tmpdirname = strdup(fname)));
+ free(tmpdirname);
+ if (len >= sizeof(tmpfname))
+ error(FATAL, "%s: name too long", fname);
+ if ((fd = mkstemp(tmpfname)) == -1)
+ error(FATAL, "%s: %s", fname, strerror(errno));
+ if ((outfile = fdopen(fd, "w")) == NULL) {
+ unlink(tmpfname);
+ error(FATAL, "%s", fname);
+ }
+ fchown(fileno(outfile), sb.st_uid, sb.st_gid);
+ fchmod(fileno(outfile), sb.st_mode & ALLPERMS);
+ outfname = tmpfname;
+ linenum = 0;
+ resetranges();
+ } else {
+ outfile = stdout;
+ outfname = "stdout";
+ }
+ if ((infile = fopen(fname, "r")) == NULL) {
+ warning("%s", strerror(errno));
+ rval = 1;
+ continue;
+ }
+ }
+
+ /*
+ * We are here only when infile is open and we still have something
+ * to read from it.
+ *
+ * Use fgetln so that we can handle essentially infinite input data.
+ * Can't use the pointer into the stdio buffer as the process space
+ * because the ungetc() can cause it to move.
+ */
+ p = fgetln(infile, &len);
+ if (ferror(infile))
+ error(FATAL, "%s: %s", fname, strerror(errno ? errno : EIO));
+ if (len != 0 && p[len - 1] == '\n') {
+ sp->append_newline = 1;
+ len--;
+ } else if (!lastline()) {
+ sp->append_newline = 1;
+ } else {
+ sp->append_newline = 0;
+ }
+ cspace(sp, p, len, spflag);
+
+ linenum++;
+
+ return (1);
+}
+
+/*
+ * Add a compilation unit to the linked list
+ */
+static void
+add_compunit(enum e_cut type, char *s)
+{
+ struct s_compunit *cu;
+
+ cu = xmalloc(sizeof(struct s_compunit));
+ cu->type = type;
+ cu->s = s;
+ cu->next = NULL;
+ *cu_nextp = cu;
+ cu_nextp = &cu->next;
+}
+
+/*
+ * Add a file to the linked list
+ */
+static void
+add_file(char *s)
+{
+ struct s_flist *fp;
+
+ fp = xmalloc(sizeof(struct s_flist));
+ fp->next = NULL;
+ *fl_nextp = fp;
+ fp->fname = s;
+ fl_nextp = &fp->next;
+}
+
+
+static int
+next_files_have_lines(void)
+{
+ struct s_flist *file;
+ FILE *file_fd;
+ int ch;
+
+ file = files;
+ while ((file = file->next) != NULL) {
+ if ((file_fd = fopen(file->fname, "r")) == NULL)
+ continue;
+
+ if ((ch = getc(file_fd)) != EOF) {
+ /*
+ * This next file has content, therefore current
+ * file doesn't contains the last line.
+ */
+ ungetc(ch, file_fd);
+ fclose(file_fd);
+ return (1);
+ }
+ fclose(file_fd);
+ }
+ return (0);
+}
+
+int
+lastline(void)
+{
+ int ch;
+
+ if (feof(infile)) {
+ return !(
+ (inplace == NULL) &&
+ next_files_have_lines());
+ }
+ if ((ch = getc(infile)) == EOF) {
+ return !(
+ (inplace == NULL) &&
+ next_files_have_lines());
+ }
+ ungetc(ch, infile);
+ return (0);
+}
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