build: Build mlibc + add distclean target

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 0 insertions, 342 deletions

diff --git a/lib/mlibc/options/posix/generic/wordexp-stubs.cpp b/lib/mlibc/options/posix/generic/wordexp-stubs.cpp
deleted file mode 100644
index 8443527..0000000
--- a/lib/mlibc/options/posix/generic/wordexp-stubs.cpp
+++ /dev/null
@@ -1,342 +0,0 @@
-/*
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * code taken from OPNSense, with modifications
- *
- * Copyright (c) 2002 Tim J. Robbins.
- * All rights reserved.
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <wordexp.h>
-#include <fcntl.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <stdint.h>
-
-#define SHELL_PATH "/bin/sh"
-#define SHELL_NAME "sh"
-
-static size_t we_read_fully(int fd, char *buffer, size_t len) {
-	size_t done = 0;
-
-	do {
-		ssize_t nread = read(fd, buffer + done, len - done);
-		if(nread == -1 && errno == EINTR)
-			continue;
-		if(nread <= 0)
-			break;
-		done += nread;
-	} while (done != len);
-
-	return done;
-}
-
-static int we_askshell(const char *words, wordexp_t *we, int flags) {
-	int pdes[2]; /* pipe to child */
-	char bbuf[9]; /* buffer for byte count */
-	char wbuf[9]; /* buffer for word count */
-	size_t nwords = 0; /* number of words from child */
-	size_t nbytes = 0; /* number of bytes from child */
-	size_t sofs = 0; /* offset into we->we_strings */
-	size_t vofs = 0; /* offset into we->we_wordv */
-	pid_t pid; /* PID of child */
-	pid_t wpid; /* waitpid return value */
-	int status; /* child exit status */
-	int error; /* our return value */
-	int serrno; /* errno to return */
-	char *np, *p; /* handy pointers */
-	char *nstrings; /* temporary for realloc() */
-	char **new_wordv; /* temporary for realloc() */
-	sigset_t newsigblock;
-	sigset_t oldsigblock;
-	const char *ifs = getenv("IFS");
-
-	serrno = errno;
-
-	if(pipe2(pdes, O_CLOEXEC) < 0)
-		return WRDE_NOSPACE;
-
-	(void)sigemptyset(&newsigblock);
-	(void)sigaddset(&newsigblock, SIGCHLD);
-	(void)sigprocmask(SIG_BLOCK, &newsigblock, &oldsigblock);
-
-	if((pid = fork()) < 0) {
-		serrno = errno;
-		close(pdes[0]);
-		close(pdes[1]);
-		(void)sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
-		errno = serrno;
-		return WRDE_NOSPACE;
-	} else if(pid == 0) {
-		/*
-		 * We are the child; make /bin/sh expand `words'.
-		 */
-		(void)sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
-		if((pdes[1] != STDOUT_FILENO ? dup2(pdes[1], STDOUT_FILENO) : fcntl(pdes[1], F_SETFD, 0)) < 0)
-			_exit(1);
-
-		execl(SHELL_PATH, SHELL_NAME, flags & WRDE_UNDEF ? "-u" : "+u",
-			"-c", "IFS=$1;eval \"$2\";eval \"set -- $3\";IFS=;a=\"$*\";"
-			"printf '%08x' \"$#\" \"${#a}\";printf '%s\\0' \"$@\"", "",
-			ifs != NULL ? ifs : " \t\n",
-			flags & WRDE_SHOWERR ? "" : "exec 2>/dev/null",
-			words,
-			(char *)NULL);
-		_exit(1);
-	}
-
-	/*
-	 * We are the parent; read the output of the shell wordexp function,
-	 * which is a 32-bit hexadecimal word count, a 32-bit hexadecimal
-	 * byte count (not including terminating null bytes), followed by
-	 * the expanded words separated by nulls.
-	 */
-	close(pdes[1]);
-	if(we_read_fully(pdes[0], wbuf, 8) != 8 || we_read_fully(pdes[0], bbuf, 8) != 8) {
-		error = flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX;
-		serrno = errno;
-		goto cleanup;
-	}
-	wbuf[8] = bbuf[8] = '\0';
-	nwords = strtol(wbuf, NULL, 16);
-	nbytes = strtol(bbuf, NULL, 16) + nwords;
-
-	/*
-	 * Allocate or reallocate (when flags & WRDE_APPEND) the word vector
-	 * and string storage buffers for the expanded words we're about to
-	 * read from the child.
-	 */
-	sofs = we->we_nbytes;
-	vofs = we->we_wordc;
-	if((flags & (WRDE_DOOFFS|WRDE_APPEND)) == (WRDE_DOOFFS | WRDE_APPEND))
-		vofs += we->we_offs;
-	we->we_wordc += nwords;
-	we->we_nbytes += nbytes;
-
-	if((new_wordv = (char **) realloc(we->we_wordv, (we->we_wordc + 1 + (flags & WRDE_DOOFFS ?  we->we_offs : 0)) * sizeof(char *))) == NULL) {
-		error = WRDE_NOSPACE;
-		goto cleanup;
-	}
-
-	we->we_wordv = new_wordv;
-
-	if((nstrings = (char *) realloc(we->we_strings, we->we_nbytes)) == NULL) {
-		error = WRDE_NOSPACE;
-		goto cleanup;
-	}
-
-	for(size_t i = 0; i < vofs; i++) {
-		if(we->we_wordv[i] != NULL)
-			we->we_wordv[i] += nstrings - we->we_strings;
-	}
-	we->we_strings = nstrings;
-
-	if(we_read_fully(pdes[0], we->we_strings + sofs, nbytes) != nbytes) {
-		error = flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX;
-		serrno = errno;
-		goto cleanup;
-	}
-
-	error = 0;
-cleanup:
-	close(pdes[0]);
-
-	do {
-		wpid = waitpid(pid, &status, 0);
-	} while(wpid < 0 && errno == EINTR);
-
-	(void)sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
-
-	if(error != 0) {
-		errno = serrno;
-		return error;
-	}
-
-	if(wpid < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0)
-		return flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX;
-
-	/*
-	 * Break the null-terminated expanded word strings out into
-	 * the vector.
-	 */
-	if(vofs == 0 && flags & WRDE_DOOFFS) {
-		while (vofs < we->we_offs)
-			we->we_wordv[vofs++] = NULL;
-	}
-
-	p = we->we_strings + sofs;
-	while (nwords-- != 0) {
-		we->we_wordv[vofs++] = p;
-		if((np = (char *) memchr(p, '\0', nbytes)) == NULL)
-			return WRDE_NOSPACE;
-
-		nbytes -= np - p + 1;
-		p = np + 1;
-	}
-
-	we->we_wordv[vofs] = NULL;
-	return 0;
-}
-
-/*
- * we_check --
- *	Check that the string contains none of the following unquoted
- *	special characters: <newline> |&;<>(){}
- *	or command substitutions when WRDE_NOCMD is set in flags.
- */
-static int we_check(const char *words, int flags)
-{
-	char c;
-	int dquote, level, quote, squote;
-
-	quote = squote = dquote = 0;
-	while ((c = *words++) != '\0') {
-		switch (c) {
-			case '\\': {
-				if(squote == 0)
-					quote ^= 1;
-				continue;
-			}
-			case '\'': {
-				if(quote + dquote == 0)
-					squote ^= 1;
-				break;
-			}
-			case '"': {
-				if(quote + squote == 0)
-					dquote ^= 1;
-				break;
-			}
-			case '`': {
-				if(quote + squote == 0 && flags & WRDE_NOCMD)
-					return WRDE_CMDSUB;
-				while ((c = *words++) != '\0' && c != '`')
-					if(c == '\\' && (c = *words++) == '\0')
-						break;
-				if(c == '\0')
-					return WRDE_SYNTAX;
-				break;
-			}
-			case '|':
-			case '&':
-			case ';':
-			case '<':
-			case '>':
-			case '{':
-			case '}':
-			case '(':
-			case ')':
-			case '\n': {
-				if(quote + squote + dquote == 0)
-					return WRDE_BADCHAR;
-				break;
-			}
-			case '$': {
-				if((c = *words++) == '\0')
-					break;
-				else if(quote + squote == 0 && c == '(') {
-					if(flags & WRDE_NOCMD && *words != '(')
-						return WRDE_CMDSUB;
-					level = 1;
-					while ((c = *words++) != '\0') {
-						if(c == '\\') {
-							if((c = *words++) == '\0')
-								break;
-						} else if(c == '(')
-							level++;
-						else if(c == ')' && --level == 0)
-							break;
-					}
-					if(c == '\0' || level != 0)
-						return WRDE_SYNTAX;
-				} else if(quote + squote == 0 && c == '{') {
-					level = 1;
-					while ((c = *words++) != '\0') {
-						if(c == '\\') {
-							if((c = *words++) == '\0')
-								break;
-						} else if(c == '{')
-							level++;
-						else if(c == '}' && --level == 0)
-							break;
-					}
-					if(c == '\0' || level != 0)
-						return WRDE_SYNTAX;
-				} else
-					--words;
-				break;
-			}
-			default: {
-				break;
-			}
-		}
-		quote = 0;
-	}
-
-	if(quote + squote + dquote != 0)
-		return WRDE_SYNTAX;
-
-	return 0;
-}
-
-int wordexp(const char * __restrict words, wordexp_t * __restrict we, int flags) {
-	int error;
-
-	if(flags & WRDE_REUSE)
-		wordfree(we);
-
-	if((flags & WRDE_APPEND) == 0) {
-		we->we_wordc = 0;
-		we->we_wordv = NULL;
-		we->we_strings = NULL;
-		we->we_nbytes = 0;
-	}
-
-	if((error = we_check(words, flags)) != 0) {
-		wordfree(we);
-		return error;
-	}
-
-	if((error = we_askshell(words, we, flags)) != 0) {
-		wordfree(we);
-		return error;
-	}
-
-	return 0;
-}
-
-void wordfree(wordexp_t *we) {
-	if (we == NULL)
-		return;
-	free(we->we_wordv);
-	free(we->we_strings);
-	we->we_wordv = NULL;
-	we->we_strings = NULL;
-	we->we_nbytes = 0;
-	we->we_wordc = 0;
-}