Renameed lib/package_remove_obsoletes.c -> package_find_obsoletes.c.

lib/package_find_obsoletes.c

@@ -0,0 +1,175 @@
+/*-
+ * Copyright (c) 2009-2013 Juan Romero Pardines.
+ * 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 ``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 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 <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "xbps_api_impl.h"
+
+static prop_array_t
+merge_filelist(prop_dictionary_t d)
+{
+	prop_array_t a, result;
+	prop_dictionary_t filed;
+	size_t i;
+
+	result = prop_array_create();
+	assert(result);
+
+	if ((a = prop_dictionary_get(d, "files"))) {
+		for (i = 0; i < prop_array_count(a); i++) {
+			filed = prop_array_get(a, i);
+			prop_array_add(result, filed);
+		}
+	}
+	if ((a = prop_dictionary_get(d, "links"))) {
+		for (i = 0; i < prop_array_count(a); i++) {
+			filed = prop_array_get(a, i);
+			prop_array_add(result, filed);
+		}
+	}
+	if ((a = prop_dictionary_get(d, "conf_files"))) {
+		for (i = 0; i < prop_array_count(a); i++) {
+			filed = prop_array_get(a, i);
+			prop_array_add(result, filed);
+		}
+	}
+	if ((a = prop_dictionary_get(d, "dirs"))) {
+		for (i = 0; i < prop_array_count(a); i++) {
+			filed = prop_array_get(a, i);
+			prop_array_add(result, filed);
+		}
+	}
+
+	return result;
+}
+
+prop_array_t
+xbps_find_pkg_obsoletes(struct xbps_handle *xhp,
+			prop_dictionary_t instd,
+			prop_dictionary_t newd)
+{
+	prop_array_t instfiles, newfiles, obsoletes;
+	prop_object_t obj, obj2;
+	prop_string_t oldstr, newstr;
+	size_t i, x;
+	const char *oldhash;
+	char *file;
+	int rv = 0;
+	bool found;
+
+	assert(prop_object_type(instd) == PROP_TYPE_DICTIONARY);
+	assert(prop_object_type(newd) == PROP_TYPE_DICTIONARY);
+
+	obsoletes = prop_array_create();
+	assert(obsoletes);
+
+	instfiles = merge_filelist(instd);
+	if (prop_array_count(instfiles) == 0) {
+		/* nothing to check if current pkg does not own any file */
+		prop_object_release(instfiles);
+		return obsoletes;
+	}
+	newfiles = merge_filelist(newd);
+
+	/*
+	 * Iterate over files list from installed package.
+	 */
+	for (i = 0; i < prop_array_count(instfiles); i++) {
+		found = false;
+		obj = prop_array_get(instfiles, i);
+		assert(prop_object_type(obj) == PROP_TYPE_DICTIONARY);
+
+		oldstr = prop_dictionary_get(obj, "file");
+		if (oldstr == NULL)
+			continue;
+
+		file = xbps_xasprintf(".%s",
+		    prop_string_cstring_nocopy(oldstr));
+
+		oldhash = NULL;
+		prop_dictionary_get_cstring_nocopy(obj,
+		    "sha256", &oldhash);
+		if (oldhash) {
+			rv = xbps_file_hash_check(file, oldhash);
+			if (rv == ENOENT || rv == ERANGE) {
+				/*
+				 * Skip unexistent and files that do not
+				 * match the hash.
+				 */
+				free(file);
+				continue;
+			}
+		}
+		/*
+		 * Check if current file is available in new pkg filelist.
+		 */
+		for (x = 0; x < prop_array_count(newfiles); x++) {
+			obj2 = prop_array_get(newfiles, x);
+			newstr = prop_dictionary_get(obj2, "file");
+			assert(newstr);
+			/*
+			 * Skip files with same path.
+			 */
+			if (prop_string_equals(oldstr, newstr)) {
+				found = true;
+				break;
+			}
+		}
+		if (found) {
+			free(file);
+			continue;
+		}
+		/*
+		 * Do not add required symlinks for the
+		 * system transition to /usr.
+		 */
+		if ((strcmp(file, "./bin") == 0) ||
+		    (strcmp(file, "./bin/") == 0) ||
+		    (strcmp(file, "./sbin") == 0) ||
+		    (strcmp(file, "./sbin/") == 0) ||
+		    (strcmp(file, "./lib") == 0) ||
+		    (strcmp(file, "./lib/") == 0) ||
+		    (strcmp(file, "./lib64/") == 0) ||
+		    (strcmp(file, "./lib64") == 0)) {
+			free(file);
+			continue;
+		}
+		/*
+		 * Obsolete found, add onto the array.
+		 */
+		xbps_dbg_printf(xhp, "found obsolete: %s\n", file);
+		prop_array_add_cstring(obsoletes, file);
+		free(file);
+	}
+	prop_object_release(instfiles);
+	prop_object_release(newfiles);
+
+	return obsoletes;
+}