xbps-bin: added WIP remove target.

--HG-- extra : convert_revision : 71314f7183384094223cf10bf16ff704ca084883
2009-02-03 03:18:00 +01:00 · 2009-02-03 03:18:00 +01:00 · 4a9125364a
commit 4a9125364a
parent b2fe705924
4 changed files with 161 additions and 10 deletions
--- a/lib/remove.c
+++ b/lib/remove.c
@ -0,0 +1,135 @@
+/*-
+ * Copyright (c) 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 <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <ctype.h>
+
+#include <xbps_api.h>
+
+int
+xbps_unregister_pkg(const char *pkgname)
+{
+	char *plist;
+	int rv = 0;
+
+	assert(pkgname != NULL);
+
+	plist = xbps_append_full_path(true, NULL, XBPS_REGPKGDB);
+	if (plist == NULL)
+		return EINVAL;
+
+	if (!xbps_remove_pkg_dict_from_file(pkgname, plist))
+		rv = errno;
+
+	return rv;
+}
+
+int
+xbps_remove_binary_pkg(const char *pkgname, const char *destdir)
+{
+	FILE *flist;
+	char path[PATH_MAX - 1], line[LINE_MAX - 1], *p;
+	int rv = 0;
+	size_t len = 0;
+
+	assert(pkgname != NULL);
+
+	if (destdir) {
+		if ((rv = chdir(destdir)) != 0)
+			return errno;
+	} else
+		destdir = "";
+
+	(void)snprintf(path, sizeof(path), "%s%s/metadata/%s/flist",
+	    destdir, XBPS_META_PATH, pkgname);
+
+	if ((flist = fopen(path, "r")) == NULL)
+		return errno;
+
+	while (!feof(flist)) {
+		p = fgets(line, sizeof(line), flist);
+		if (p == NULL) {
+			if (feof(flist))
+				break;
+			if (ferror(flist)) {
+				rv = errno;
+				break;
+			}
+		}
+		if (strlen(line) == 0 || line[0] == '#' ||
+		    isspace((unsigned char)line[0]) != 0)
+			continue;
+
+		len = strlen(line) + 1;
+		p = calloc(1, len);
+		if (p == NULL) {
+			rv = errno;
+			break;
+		}
+
+		(void)strncpy(p, line, len - 2);
+		(void)snprintf(path, sizeof(path), "%s%s",
+		    destdir, p);
+
+		/*
+		 * Remove the file or the directory if it's empty.
+		 */
+		if ((rv = unlink(path)) == -1) {
+			if (errno == EISDIR) {
+				if ((rv = rmdir(path)) == -1) {
+					if (errno == ENOTEMPTY)  {
+						rv = 0;
+						goto next;
+					}
+					printf("WARNING: can't remove directory"
+					    " %s (%s)\n", path, strerror(errno));
+					goto next;
+				}
+				printf("Removed directory: %s\n", path);
+				goto next;
+			}
+			printf("WARNING: can't remove file %s (%s)\n", path,
+			    strerror(errno));
+			goto next;
+		}
+
+		printf("Removed file: %s\n", path);
+next:
+		free(p);
+		p = NULL;
+	}
+
+	(void)fclose(flist);
+
+	/* If successful, unregister pkg from db */
+	return rv ? rv : xbps_unregister_pkg(pkgname);
+}