Initial import of xbps with code as August '09.

--HG--
extra : convert_revision : juan%40xbps-20090817170720-amxxac4a2e8bza1j

lib/util.c

@@ -0,0 +1,372 @@
+/*-
+ * Copyright (c) 2008-2009 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 <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <sys/utsname.h>
+
+#include <xbps_api.h>
+
+static bool	question(bool, const char *, va_list);
+
+static const char *rootdir;
+static int flags;
+
+char *
+xbps_get_file_hash(const char *file)
+{
+	SHA256_CTX ctx;
+	char *hash;
+	uint8_t buf[BUFSIZ * 20], digest[SHA256_DIGEST_STRING_LENGTH];
+	ssize_t bytes;
+	int fd;
+
+	if ((fd = open(file, O_RDONLY)) == -1)
+		return NULL;
+
+	SHA256_Init(&ctx);
+	while ((bytes = read(fd, buf, sizeof(buf))) > 0)
+		SHA256_Update(&ctx, buf, (size_t)bytes);
+	hash = strdup(SHA256_End(&ctx, digest));
+	(void)close(fd);
+
+	return hash;
+}
+
+int
+xbps_check_file_hash(const char *path, const char *sha256)
+{
+	char *res;
+
+	res = xbps_get_file_hash(path);
+	if (res == NULL)
+		return errno;
+
+	if (strcmp(sha256, res)) {
+		free(res);
+		return ERANGE;
+	}
+	free(res);
+
+	return 0;
+}
+
+int
+xbps_check_pkg_file_hash(prop_dictionary_t pkgd, const char *repoloc)
+{
+	const char *sha256, *arch, *filename;
+	char *binfile;
+	int rv = 0;
+
+	assert(repoloc != NULL);
+
+	if (!prop_dictionary_get_cstring_nocopy(pkgd, "filename", &filename))
+		return EINVAL;
+
+	if (!prop_dictionary_get_cstring_nocopy(pkgd, "filename-sha256",
+	    &sha256))
+		return EINVAL;
+
+	if (!prop_dictionary_get_cstring_nocopy(pkgd, "architecture", &arch))
+		return EINVAL;
+
+	binfile = xbps_xasprintf("%s/%s/%s", repoloc, arch, filename);
+	if (binfile == NULL)
+		return EINVAL;
+
+	rv = xbps_check_file_hash(binfile, sha256);
+	free(binfile);
+
+	return rv;
+}
+
+int
+xbps_check_is_installed_pkg(const char *pkg)
+{
+	prop_dictionary_t dict;
+	const char *reqver, *instver;
+	char *pkgname;
+	int rv = 0;
+	pkg_state_t state = 0;
+
+	assert(pkg != NULL);
+
+	pkgname = xbps_get_pkg_name(pkg);
+	reqver = xbps_get_pkg_version(pkg);
+
+	dict = xbps_find_pkg_installed_from_plist(pkgname);
+	if (dict == NULL) {
+		free(pkgname);
+		return -1; /* not installed */
+	}
+
+	/*
+	 * Check that package state is fully installed, not
+	 * unpacked or something else.
+	 */
+	if (xbps_get_pkg_state_installed(pkgname, &state) != 0) {
+		free(pkgname);
+		return -1;
+	}
+	free(pkgname);
+
+	if (state != XBPS_PKG_STATE_INSTALLED)
+		return -1;
+
+	/* Get version from installed package */
+	prop_dictionary_get_cstring_nocopy(dict, "version", &instver);
+
+	/* Compare installed and required version. */
+	rv = xbps_cmpver(instver, reqver);
+
+	prop_object_release(dict);
+
+	return rv;
+}
+
+bool
+xbps_check_is_installed_pkgname(const char *pkgname)
+{
+	prop_dictionary_t pkgd;
+
+	assert(pkgname != NULL);
+
+	pkgd = xbps_find_pkg_installed_from_plist(pkgname);
+	if (pkgd) {
+		prop_object_release(pkgd);
+		return true;
+	}
+
+	return false;
+}
+
+const char *
+xbps_get_pkg_version(const char *pkg)
+{
+	const char *tmp;
+
+	assert(pkg != NULL);
+
+	/* Get the required version */
+	tmp = strrchr(pkg, '-');
+	if (tmp == NULL)
+		return NULL;
+
+	return tmp + 1; /* skip first '-' */
+}
+
+const char *
+xbps_get_pkg_revision(const char *pkg)
+{
+	const char *tmp;
+
+	assert(pkg != NULL);
+
+	/* Get the required revision */
+	tmp = strrchr(pkg, '_');
+	if (tmp == NULL)
+		return NULL;
+
+	return tmp + 1; /* skip first '_' */
+}
+
+char *
+xbps_get_pkg_name(const char *pkg)
+{
+	const char *tmp;
+	char *pkgname;
+	size_t len = 0;
+
+	assert(pkg != NULL);
+
+	/* Get package name */
+	tmp = strrchr(pkg, '-');
+	if (tmp == NULL)
+		return NULL;
+
+	len = strlen(pkg) - strlen(tmp) + 1;
+
+	pkgname = malloc(len);
+	memcpy(pkgname, pkg, len - 1);
+	pkgname[len - 1] = '\0';
+
+	return pkgname;
+}
+
+char *
+xbps_get_pkg_index_plist(const char *path)
+{
+	struct utsname un;
+
+	assert(path != NULL);
+
+	if (uname(&un) == -1)
+		return NULL;
+
+	return xbps_xasprintf("%s/%s/%s", path, un.machine, XBPS_PKGINDEX);
+}
+
+bool
+xbps_pkg_has_rundeps(prop_dictionary_t pkg)
+{
+	prop_array_t array;
+
+	assert(pkg != NULL);
+	array = prop_dictionary_get(pkg, "run_depends");
+	if (array && prop_array_count(array) > 0)
+		return true;
+
+	return false;
+}
+
+void
+xbps_set_rootdir(const char *dir)
+{
+	assert(dir != NULL);
+	rootdir = dir;
+}
+
+const char *
+xbps_get_rootdir(void)
+{
+	if (rootdir == NULL)
+		rootdir = "";
+
+	return rootdir;
+}
+
+void
+xbps_set_flags(int lflags)
+{
+	flags = lflags;
+}
+
+int
+xbps_get_flags(void)
+{
+	return flags;
+}
+
+char *
+xbps_xasprintf(const char *fmt, ...)
+{
+	va_list ap;
+	char *buf;
+
+	va_start(ap, fmt);
+	if (vasprintf(&buf, fmt, ap) == -1)
+		return NULL;
+	va_end(ap);
+
+	return buf;
+}
+
+/*
+ * The following functions were taken from pacman (src/pacman/util.c)
+ * Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
+ */
+bool
+xbps_yesno(const char *fmt, ...)
+{
+	va_list ap;
+	bool res;
+
+	va_start(ap, fmt);
+	res = question(1, fmt, ap);
+	va_end(ap);
+
+	return res;
+}
+
+bool
+xbps_noyes(const char *fmt, ...)
+{
+	va_list ap;
+	bool res;
+
+	va_start(ap, fmt);
+	res = question(0, fmt, ap);
+	va_end(ap);
+
+	return res;
+}
+
+static char *
+strtrim(char *str)
+{
+	char *pch = str;
+
+	if (str == NULL || *str == '\0')
+		return str;
+
+	while (isspace((unsigned char)*pch))
+		pch++;
+
+	if (pch != str)
+		memmove(str, pch, (strlen(pch) + 1));
+
+	if (*str == '\0')
+		return str;
+
+	pch = (str + (strlen(str) - 1));
+	while (isspace((unsigned char)*pch))
+		pch--;
+
+	*++pch = '\0';
+
+	return str;
+}
+
+static bool
+question(bool preset, const char *fmt, va_list ap)
+{
+	char response[32];
+
+	vfprintf(stderr, fmt, ap);
+	if (preset)
+		fprintf(stderr, " %s ", "[Y/n]");
+	else
+		fprintf(stderr, " %s ", "[y/N]");
+
+	if (fgets(response, 32, stdin)) {
+		(void)strtrim(response);
+		if (strlen(response) == 0)
+			return preset;
+
+		if ((strcasecmp(response, "y") == 0) ||
+		    (strcasecmp(response, "yes") == 0))
+			return true;
+		else if ((strcasecmp(response, "n") == 0) ||
+			 (strcasecmp(response, "no") == 0))
+			return false;
+	}
+	return false;
+}