Checkpoint for installation of binary packages.

--HG--
extra : convert_revision : 0bc55ebae04b2e1e5ab20feca786b649fc2e0335

lib/depends.c

@@ -0,0 +1,189 @@
+/*-
+ * Copyright (c) 2008 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 <limits.h>
+
+#include <xbps_api.h>
+
+const char *
+xbps_get_pkg_version(const char *pkg)
+{
+	const char *tmp;
+
+	/* Get the required version */
+	tmp = strrchr(pkg, '-');
+	assert(tmp != NULL);
+	return tmp + 1; /* skip first '-' */
+}
+
+char *
+xbps_get_pkg_name(const char *pkg)
+{
+	const char *tmp;
+	char *pkgname;
+	size_t len;
+
+	/* Get the required version */
+	tmp = strrchr(pkg, '-');
+	assert(tmp != NULL);
+	len = strlen(pkg) - strlen(tmp);
+
+	/* Get package name */
+	pkgname = malloc(len + 1);
+	memcpy(pkgname, pkg, len);
+	pkgname[len + 1] = '\0';
+
+	return pkgname;
+}
+
+bool
+xbps_append_full_path(char *buf, const char *root, const char *plistf)
+{
+	const char *env, *tmp;
+	size_t len = 0;
+
+	assert(buf != NULL);
+	assert(plistf != NULL);
+
+	if (root)
+		env = root;
+	else {
+		env = getenv("XBPS_META_PATH");
+		if (env == NULL)
+			env = XBPS_META_PATH;
+	}
+
+	tmp = strncpy(buf, env, PATH_MAX - 1);
+	if (sizeof(*tmp) >= PATH_MAX) {
+		errno = ENOSPC;
+		return false;
+	}
+
+	len = strlen(buf);
+	buf[len + 1] = '\0';
+	if (buf[len - 2] != '/')
+		strncat(buf, "/", 1);
+	strncat(buf, plistf, sizeof(buf) - strlen(buf) - 1);
+
+	return true;
+}
+
+static int
+xbps_check_is_installed_pkg(const char *plist, const char *pkg)
+{
+	prop_dictionary_t dict, pkgdict;
+	prop_object_t obj;
+	const char *reqver, *instver;
+	char *pkgname;
+
+	pkgname = xbps_get_pkg_name(pkg);
+	reqver = xbps_get_pkg_version(pkg);
+
+	/* Get package dictionary from plist */
+	dict = prop_dictionary_internalize_from_file(plist);
+	if (dict == NULL) {
+		free(pkgname);
+		return XBPS_PKG_EEMPTY;
+	}
+
+	pkgdict = xbps_find_pkg_in_dict(dict, pkgname);
+	if (pkgdict == NULL) {
+		prop_object_release(dict);
+		free(pkgname);
+		return 1; /* not installed */
+	}
+
+	/* Get version from installed package */
+	obj = prop_dictionary_get(pkgdict, "version");
+	assert(obj != NULL);
+	assert(prop_object_type(obj) == PROP_TYPE_STRING);
+	instver = prop_string_cstring_nocopy(obj);
+	assert(instver != NULL);
+	free(pkgname);
+	prop_object_release(dict);
+
+	return (xbps_cmpver_versions(instver, reqver) > 0) ? 1 : 0;
+}
+
+int
+xbps_check_reqdeps_in_pkg(const char *plist, prop_dictionary_t pkg)
+{
+	prop_array_t array;
+	prop_object_t obj;
+	prop_object_iterator_t iter;
+	const char *reqpkg;
+	int rv = 0;
+	bool need_deps = false;
+
+	assert(pkg != NULL);
+	assert(prop_object_type(pkg) == PROP_TYPE_DICTIONARY);
+	assert(prop_dictionary_count(pkg) != 0);
+	assert(plist != NULL);
+
+	array = prop_dictionary_get(pkg, "run_depends");
+	if (array == NULL) {
+		/* Package has no required rundeps */
+		return 0;
+	}
+
+	assert(prop_object_type(array) == PROP_TYPE_ARRAY);
+	assert(prop_array_count(array) != 0);
+
+	iter = prop_array_iterator(array);
+	if (iter == NULL) {
+		errno = ENOMEM;
+		return -1;
+	}
+
+	while ((obj = prop_object_iterator_next(iter))) {
+		assert(prop_object_type(obj) == PROP_TYPE_STRING);
+		reqpkg = prop_string_cstring_nocopy(obj);
+
+		rv = xbps_check_is_installed_pkg(plist, reqpkg);
+		if (rv == XBPS_PKG_EEMPTY) {
+			/* No packages registered yet. */
+			need_deps = true;
+			printf("Package '%s' not installed\n", reqpkg);
+			//xbps_add_pkg_dependency(reqpkg);
+
+		} else if (rv == 1) {
+			need_deps = true;
+			printf("Package '%s' required.\n", reqpkg);
+
+		} else if (rv == 0) {
+			printf("Package '%s' already installed.\n", reqpkg);
+
+		}
+	}
+
+	prop_object_iterator_release(iter);
+
+	return need_deps;
+}