1 files changed, 133 insertions, 0 deletions
diff --git a/src/app_manifest.c b/src/app_manifest.c
new file mode 100644
index 0000000..fe64bea
--- /dev/null
+++ b/src/app_manifest.c
@@ -0,0 +1,133 @@
+/* app_manifest.c - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2005-2017 Natanael Copa <n@tanael.org>
+ * Copyright (C) 2008-2017 Timo Teräs <timo.teras@iki.fi>
+ * Copyright (C) 2017 William Pitcock <nenolod@dereferenced.org>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#include <stdio.h>
+#include <sys/stat.h>
+
+#include "apk_defines.h"
+#include "apk_applet.h"
+#include "apk_database.h"
+#include "apk_version.h"
+#include "apk_print.h"
+
+/* TODO: support package files as well as generating manifest from the installed DB. */
+static char *csum_types[APK_CHECKSUM_SHA1 + 1] = {
+	/* Note: if adding new algorithms, update apk-manifest(8) */
+	[APK_CHECKSUM_MD5] = "md5",
+	[APK_CHECKSUM_SHA1] = "sha1",
+};
+
+struct manifest_file_ctx {
+	const char *file;
+	struct apk_sign_ctx *sctx;
+};
+
+static void process_package(struct apk_database *db, struct apk_package *pkg)
+{
+	struct apk_installed_package *ipkg = pkg->ipkg;
+	struct apk_db_dir_instance *diri;
+	struct apk_db_file *file;
+	struct hlist_node *dc, *dn, *fc, *fn;
+	char csum_buf[APK_BLOB_CHECKSUM_BUF];
+
+	if (ipkg == NULL)
+		return;
+
+	hlist_for_each_entry_safe(diri, dc, dn, &ipkg->owned_dirs,
+				  pkg_dirs_list) {
+		hlist_for_each_entry_safe(file, fc, fn, &diri->owned_files,
+					  diri_files_list) {
+			apk_blob_t csum_blob = APK_BLOB_BUF(csum_buf);
+
+			memset(csum_buf, '\0', sizeof(csum_buf));
+			apk_blob_push_hexdump(&csum_blob, APK_BLOB_CSUM(file->csum));
+
+			if (apk_verbosity > 1)
+				printf("%s: ", pkg->name->name);
+
+                        printf("%s:%s  " DIR_FILE_FMT "\n", csum_types[file->csum.type], csum_buf, DIR_FILE_PRINTF(diri->dir, file));
+                }
+	}
+}
+
+static int read_file_entry(void *ctx, const struct apk_file_info *ae,
+                           struct apk_istream *is)
+{
+	struct manifest_file_ctx *mctx = ctx;
+	char csum_buf[APK_BLOB_CHECKSUM_BUF];
+	apk_blob_t csum_blob = APK_BLOB_BUF(csum_buf);
+	int r;
+
+	r = apk_sign_ctx_verify_tar(mctx->sctx, ae, is);
+	if (r != 0)
+		return r;
+
+	if (!mctx->sctx->data_started)
+		return 0;
+
+	if ((ae->mode & S_IFMT) != S_IFREG)
+		return 0;
+
+	memset(csum_buf, '\0', sizeof(csum_buf));
+	apk_blob_push_hexdump(&csum_blob, APK_BLOB_CSUM(ae->csum));
+
+	if (apk_verbosity > 1)
+		printf("%s: ", mctx->file);
+
+	printf("%s:%s  %s\n", csum_types[ae->csum.type], csum_buf, ae->name);
+
+	return 0;
+}
+
+static void process_file(struct apk_database *db, const char *match)
+{
+	struct apk_sign_ctx sctx;
+	struct manifest_file_ctx ctx = {match, &sctx};
+	int r;
+
+	apk_sign_ctx_init(&sctx, APK_SIGN_VERIFY, NULL, db->keys_fd);
+	r = apk_tar_parse(
+		apk_istream_gunzip_mpart(apk_istream_from_file(AT_FDCWD, match), apk_sign_ctx_mpart_cb, &sctx),
+		read_file_entry, &ctx, &db->id_cache);
+	apk_sign_ctx_free(&sctx);
+	if (r < 0) apk_error("%s: %s", match, apk_error_str(r));
+}
+
+static void process_match(struct apk_database *db, const char *match, struct apk_name *name, void *ctx)
+{
+	struct apk_provider *p;
+
+	if (name == NULL)
+	{
+		process_file(db, match);
+		return;
+	}
+
+	foreach_array_item(p, name->providers)
+		process_package(db, p->pkg);
+}
+
+static int manifest_main(void *ctx, struct apk_database *db, struct apk_string_array *args)
+{
+	apk_name_foreach_matching(db, args, apk_foreach_genid(), process_match, NULL);
+	return 0;
+}
+
+static struct apk_applet apk_manifest = {
+	.name = "manifest",
+	.arguments = "PACKAGE...",
+	.open_flags = APK_OPENF_READ,
+	.command_groups = APK_COMMAND_GROUP_REPO,
+	.main = manifest_main,
+};
+
+APK_DEFINE_APPLET(apk_manifest);