Bump bundled libarchive version to 3.5.2

- Update bunlded libarchive version used on Windows/Mac
- Enable requested zstd support while we are at it. Closes #211

dependencies/libarchive-3.5.2/cpio/cmdline.c

@@ -0,0 +1,384 @@
+/*-
+ * Copyright (c) 2003-2007 Tim Kientzle
+ * 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
+ *    in this position and unchanged.
+ * 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(S) ``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(S) 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 "cpio_platform.h"
+__FBSDID("$FreeBSD: src/usr.bin/cpio/cmdline.c,v 1.5 2008/12/06 07:30:40 kientzle Exp $");
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_GRP_H
+#include <grp.h>
+#endif
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#include "cpio.h"
+#include "err.h"
+
+/*
+ * Short options for cpio.  Please keep this sorted.
+ */
+static const char *short_options = "067AaBC:cdE:F:f:H:hI:iJjLlmnO:opR:rtuVvW:yZz";
+
+/*
+ * Long options for cpio.  Please keep this sorted.
+ */
+static const struct option {
+	const char *name;
+	int required;	/* 1 if this option requires an argument */
+	int equivalent;	/* Equivalent short option. */
+} cpio_longopts[] = {
+	{ "b64encode",			0, OPTION_B64ENCODE },
+	{ "binary",			0, '7' },
+	{ "create",			0, 'o' },
+	{ "dereference",		0, 'L' },
+	{ "dot",			0, 'V' },
+	{ "extract",			0, 'i' },
+	{ "file",			1, 'F' },
+	{ "format",             	1, 'H' },
+	{ "grzip",			0, OPTION_GRZIP },
+	{ "help",			0, 'h' },
+	{ "insecure",			0, OPTION_INSECURE },
+	{ "link",			0, 'l' },
+	{ "list",			0, 't' },
+	{ "lrzip",			0, OPTION_LRZIP },
+	{ "lz4",			0, OPTION_LZ4 },
+	{ "lzma",			0, OPTION_LZMA },
+	{ "lzop",			0, OPTION_LZOP },
+	{ "make-directories",		0, 'd' },
+	{ "no-preserve-owner",		0, OPTION_NO_PRESERVE_OWNER },
+	{ "null",			0, '0' },
+	{ "numeric-uid-gid",		0, 'n' },
+	{ "owner",			1, 'R' },
+	{ "passphrase",			1, OPTION_PASSPHRASE },
+	{ "pass-through",		0, 'p' },
+	{ "preserve-modification-time", 0, 'm' },
+	{ "preserve-owner",		0, OPTION_PRESERVE_OWNER },
+	{ "pwb",			0, '6' },
+	{ "quiet",			0, OPTION_QUIET },
+	{ "unconditional",		0, 'u' },
+	{ "uuencode",			0, OPTION_UUENCODE },
+	{ "verbose",			0, 'v' },
+	{ "version",			0, OPTION_VERSION },
+	{ "xz",				0, 'J' },
+	{ "zstd",			0, OPTION_ZSTD },
+	{ NULL, 0, 0 }
+};
+
+/*
+ * I used to try to select platform-provided getopt() or
+ * getopt_long(), but that caused a lot of headaches.  In particular,
+ * I couldn't consistently use long options in the test harness
+ * because not all platforms have getopt_long().  That in turn led to
+ * overuse of the -W hack in the test harness, which made it rough to
+ * run the test harness against GNU cpio.  (I periodically run the
+ * test harness here against GNU cpio as a sanity-check.  Yes,
+ * I've found a couple of bugs in GNU cpio that way.)
+ */
+int
+cpio_getopt(struct cpio *cpio)
+{
+	enum { state_start = 0, state_next_word, state_short, state_long };
+	static int state = state_start;
+	static char *opt_word;
+
+	const struct option *popt, *match = NULL, *match2 = NULL;
+	const char *p, *long_prefix = "--";
+	size_t optlength;
+	int opt = '?';
+	int required = 0;
+
+	cpio->argument = NULL;
+
+	/* First time through, initialize everything. */
+	if (state == state_start) {
+		/* Skip program name. */
+		++cpio->argv;
+		--cpio->argc;
+		state = state_next_word;
+	}
+
+	/*
+	 * We're ready to look at the next word in argv.
+	 */
+	if (state == state_next_word) {
+		/* No more arguments, so no more options. */
+		if (cpio->argv[0] == NULL)
+			return (-1);
+		/* Doesn't start with '-', so no more options. */
+		if (cpio->argv[0][0] != '-')
+			return (-1);
+		/* "--" marks end of options; consume it and return. */
+		if (strcmp(cpio->argv[0], "--") == 0) {
+			++cpio->argv;
+			--cpio->argc;
+			return (-1);
+		}
+		/* Get next word for parsing. */
+		opt_word = *cpio->argv++;
+		--cpio->argc;
+		if (opt_word[1] == '-') {
+			/* Set up long option parser. */
+			state = state_long;
+			opt_word += 2; /* Skip leading '--' */
+		} else {
+			/* Set up short option parser. */
+			state = state_short;
+			++opt_word;  /* Skip leading '-' */
+		}
+	}
+
+	/*
+	 * We're parsing a group of POSIX-style single-character options.
+	 */
+	if (state == state_short) {
+		/* Peel next option off of a group of short options. */
+		opt = *opt_word++;
+		if (opt == '\0') {
+			/* End of this group; recurse to get next option. */
+			state = state_next_word;
+			return cpio_getopt(cpio);
+		}
+
+		/* Does this option take an argument? */
+		p = strchr(short_options, opt);
+		if (p == NULL)
+			return ('?');
+		if (p[1] == ':')
+			required = 1;
+
+		/* If it takes an argument, parse that. */
+		if (required) {
+			/* If arg is run-in, opt_word already points to it. */
+			if (opt_word[0] == '\0') {
+				/* Otherwise, pick up the next word. */
+				opt_word = *cpio->argv;
+				if (opt_word == NULL) {
+					lafe_warnc(0,
+					    "Option -%c requires an argument",
+					    opt);
+					return ('?');
+				}
+				++cpio->argv;
+				--cpio->argc;
+			}
+			if (opt == 'W') {
+				state = state_long;
+				long_prefix = "-W "; /* For clearer errors. */
+			} else {
+				state = state_next_word;
+				cpio->argument = opt_word;
+			}
+		}
+	}
+
+	/* We're reading a long option, including -W long=arg convention. */
+	if (state == state_long) {
+		/* After this long option, we'll be starting a new word. */
+		state = state_next_word;
+
+		/* Option name ends at '=' if there is one. */
+		p = strchr(opt_word, '=');
+		if (p != NULL) {
+			optlength = (size_t)(p - opt_word);
+			cpio->argument = (char *)(uintptr_t)(p + 1);
+		} else {
+			optlength = strlen(opt_word);
+		}
+
+		/* Search the table for an unambiguous match. */
+		for (popt = cpio_longopts; popt->name != NULL; popt++) {
+			/* Short-circuit if first chars don't match. */
+			if (popt->name[0] != opt_word[0])
+				continue;
+			/* If option is a prefix of name in table, record it.*/
+			if (strncmp(opt_word, popt->name, optlength) == 0) {
+				match2 = match; /* Record up to two matches. */
+				match = popt;
+				/* If it's an exact match, we're done. */
+				if (strlen(popt->name) == optlength) {
+					match2 = NULL; /* Forget the others. */
+					break;
+				}
+			}
+		}
+
+		/* Fail if there wasn't a unique match. */
+		if (match == NULL) {
+			lafe_warnc(0,
+			    "Option %s%s is not supported",
+			    long_prefix, opt_word);
+			return ('?');
+		}
+		if (match2 != NULL) {
+			lafe_warnc(0,
+			    "Ambiguous option %s%s (matches --%s and --%s)",
+			    long_prefix, opt_word, match->name, match2->name);
+			return ('?');
+		}
+
+		/* We've found a unique match; does it need an argument? */
+		if (match->required) {
+			/* Argument required: get next word if necessary. */
+			if (cpio->argument == NULL) {
+				cpio->argument = *cpio->argv;
+				if (cpio->argument == NULL) {
+					lafe_warnc(0,
+					    "Option %s%s requires an argument",
+					    long_prefix, match->name);
+					return ('?');
+				}
+				++cpio->argv;
+				--cpio->argc;
+			}
+		} else {
+			/* Argument forbidden: fail if there is one. */
+			if (cpio->argument != NULL) {
+				lafe_warnc(0,
+				    "Option %s%s does not allow an argument",
+				    long_prefix, match->name);
+				return ('?');
+			}
+		}
+		return (match->equivalent);
+	}
+
+	return (opt);
+}
+
+
+/*
+ * Parse the argument to the -R or --owner flag.
+ *
+ * The format is one of the following:
+ *   <username|uid>    - Override user but not group
+ *   <username>:   - Override both, group is user's default group
+ *   <uid>:    - Override user but not group
+ *   <username|uid>:<groupname|gid> - Override both
+ *   :<groupname|gid>  - Override group but not user
+ *
+ * Where uid/gid are decimal representations and groupname/username
+ * are names to be looked up in system database.  Note that we try
+ * to look up an argument as a name first, then try numeric parsing.
+ *
+ * A period can be used instead of the colon.
+ *
+ * Sets uid/gid return as appropriate, -1 indicates uid/gid not specified.
+ * TODO: If the spec uses uname/gname, then return those to the caller
+ * as well.  If the spec provides uid/gid, just return names as NULL.
+ *
+ * Returns NULL if no error, otherwise returns error string for display.
+ *
+ */
+const char *
+owner_parse(const char *spec, int *uid, int *gid)
+{
+	static char errbuff[128];
+	const char *u, *ue, *g;
+
+	*uid = -1;
+	*gid = -1;
+
+	if (spec[0] == '\0')
+		return ("Invalid empty user/group spec");
+
+	/*
+	 * Split spec into [user][:.][group]
+	 *  u -> first char of username, NULL if no username
+	 *  ue -> first char after username (colon, period, or \0)
+	 *  g -> first char of group name
+	 */
+	if (*spec == ':' || *spec == '.') {
+		/* If spec starts with ':' or '.', then just group. */
+		ue = u = NULL;
+		g = spec + 1;
+	} else {
+		/* Otherwise, [user] or [user][:] or [user][:][group] */
+		ue = u = spec;
+		while (*ue != ':' && *ue != '.' && *ue != '\0')
+			++ue;
+		g = ue;
+		if (*g != '\0') /* Skip : or . to find first char of group. */
+			++g;
+	}
+
+	if (u != NULL) {
+		/* Look up user: ue is first char after end of user. */
+		char *user;
+		struct passwd *pwent;
+
+		user = (char *)malloc(ue - u + 1);
+		if (user == NULL)
+			return ("Couldn't allocate memory");
+		memcpy(user, u, ue - u);
+		user[ue - u] = '\0';
+		if ((pwent = getpwnam(user)) != NULL) {
+			*uid = pwent->pw_uid;
+			if (*ue != '\0')
+				*gid = pwent->pw_gid;
+		} else {
+			char *end;
+			errno = 0;
+			*uid = (int)strtoul(user, &end, 10);
+			if (errno || *end != '\0') {
+				snprintf(errbuff, sizeof(errbuff),
+				    "Couldn't lookup user ``%s''", user);
+				errbuff[sizeof(errbuff) - 1] = '\0';
+				free(user);
+				return (errbuff);
+			}
+		}
+		free(user);
+	}
+
+	if (*g != '\0') {
+		struct group *grp;
+		if ((grp = getgrnam(g)) != NULL) {
+			*gid = grp->gr_gid;
+		} else {
+			char *end;
+			errno = 0;
+			*gid = (int)strtoul(g, &end, 10);
+			if (errno || *end != '\0') {
+				snprintf(errbuff, sizeof(errbuff),
+				    "Couldn't lookup group ``%s''", g);
+				errbuff[sizeof(errbuff) - 1] = '\0';
+				return (errbuff);
+			}
+		}
+	}
+	return (NULL);
+}