Update vendor/libarchive to 3.7.3

New features:
  #1941 uudecode filter: support file name and file mode in raw mode
  #1943 7-zip reader: translate Windows permissions into UNIX
        permissions
  #1962 zstd filter now supports the "long" write option
  #2012 add trailing letter b to bsdtar(1) substitute pattern
  #2031 PCRE2 support
  #2054 add support for long options "--group" and "--owner" to tar(1)

Security fixes:
  #2101 Fix possible vulnerability in tar error reporting introduced
        in f27c173

Important bugfixes:
  #1974 ISO9660: preserve the natural order of links
  #2105 rar5: fix infinite loop if during rar5 decompression the last
        block produced no data
  #2027 xz filter: fix incorrect eof at the end of an lzip member
  #2043 zip: fix end-of-data marker processing when decompressing zip
        archives

Obtained from:		libarchive
Libarchive commit:	4fcc02d906cca4b9e21a78a833f1142a2689ec52

1 files changed, 23 insertions, 5 deletions

diff --git a/tar/subst.c b/tar/subst.c
index 55ad63dcecde..9747abb906c4 100644
--- a/tar/subst.c
+++ b/tar/subst.c
@@ -24,14 +24,15 @@
  */
 
 #include "bsdtar_platform.h"
-__FBSDID("$FreeBSD: src/usr.bin/tar/subst.c,v 1.4 2008/06/15 10:08:16 kientzle Exp $");
 
-#if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H)
+#if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) || defined(HAVE_PCRE2POSIX_H)
 #include "bsdtar.h"
 
 #include <errno.h>
-#ifdef HAVE_PCREPOSIX_H
+#if defined(HAVE_PCREPOSIX_H)
 #include <pcreposix.h>
+#elif defined(HAVE_PCRE2POSIX_H)
+#include <pcre2posix.h>
 #else
 #include <regex.h>
 #endif
@@ -48,7 +49,7 @@ struct subst_rule {
 	struct subst_rule *next;
 	regex_t re;
 	char *result;
-	unsigned int global:1, print:1, regular:1, symlink:1, hardlink:1;
+	unsigned int global:1, print:1, regular:1, symlink:1, hardlink:1, from_begin:1;
 };
 
 struct substitution {
@@ -128,9 +129,14 @@ add_substitution(struct bsdtar *bsdtar, const char *rule_text)
 	rule->regular = 1; /* Rewrite regular filenames. */
 	rule->symlink = 1; /* Rewrite symlink targets. */
 	rule->hardlink = 1; /* Rewrite hardlink targets. */
+	rule->from_begin = 0; /* Don't match from start. */
 
 	while (*++end_pattern) {
 		switch (*end_pattern) {
+		case 'b':
+		case 'B':
+			rule->from_begin = 1;
+			break;
 		case 'g':
 		case 'G':
 			rule->global = 1;
@@ -159,6 +165,7 @@ add_substitution(struct bsdtar *bsdtar, const char *rule_text)
 			break;
 		default:
 			lafe_errc(1, 0, "Invalid replacement flag %c", *end_pattern);
+			/* NOTREACHED */
 		}
 	}
 }
@@ -212,6 +219,7 @@ apply_substitution(struct bsdtar *bsdtar, const char *name, char **result,
 {
 	const char *path = name;
 	regmatch_t matches[10];
+	char* buffer = NULL;
 	size_t i, j;
 	struct subst_rule *rule;
 	struct substitution *subst;
@@ -237,6 +245,13 @@ apply_substitution(struct bsdtar *bsdtar, const char *name, char **result,
 				continue;
 		}
 
+		if (rule->from_begin && *result) {
+			realloc_strcat(result, name);
+			realloc_strcat(&buffer, *result);
+			name = buffer;
+			(*result)[0] = 0;
+		}
+
 		while (1) {
 			if (regexec(&rule->re, name, 10, matches, 0))
 				break;
@@ -276,6 +291,7 @@ apply_substitution(struct bsdtar *bsdtar, const char *name, char **result,
 				case '9':
 					realloc_strncat(result, rule->result + j, i - j - 1);
 					if ((size_t)(c - '0') > (size_t)(rule->re.re_nsub)) {
+						free(buffer);
 						free(*result);
 						*result = NULL;
 						return -1;
@@ -302,6 +318,8 @@ apply_substitution(struct bsdtar *bsdtar, const char *name, char **result,
 	if (got_match)
 		realloc_strcat(result, name);
 
+	free(buffer);
+
 	if (print_match)
 		fprintf(stderr, "%s >> %s\n", path, *result);
 
@@ -325,4 +343,4 @@ cleanup_substitution(struct bsdtar *bsdtar)
 	}
 	free(subst);
 }
-#endif /* defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) */
+#endif /* defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H) || defined(HAVE_PCRE2POSIX_H) */