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-rw-r--r--src/audit.c103
1 files changed, 71 insertions, 32 deletions
diff --git a/src/audit.c b/src/audit.c
index d6a66b7..b1fbef5 100644
--- a/src/audit.c
+++ b/src/audit.c
@@ -20,34 +20,71 @@
struct audit_ctx {
unsigned int open_flags;
- int (*audit)(struct apk_database *db);
+ int check_permissions : 1;
+ int (*audit)(struct audit_ctx *actx, struct apk_database *db);
};
-static int audit_file(struct apk_database *db, struct apk_db_file *dbf,
+static int audit_file(struct audit_ctx *actx,
+ struct apk_database *db,
+ struct apk_db_file *dbf,
const char *name)
{
struct apk_file_info fi;
+ if (dbf == NULL)
+ return 'A';
+
if (apk_file_get_info(db->root_fd, name, APK_FI_NOFOLLOW | dbf->csum.type, &fi) != 0)
- return 1;
+ return 0;
if (dbf->csum.type != APK_CHECKSUM_NONE &&
apk_checksum_compare(&fi.csum, &dbf->csum) == 0)
- return 0;
+ return 'U';
if (S_ISLNK(fi.mode) && dbf->csum.type == APK_CHECKSUM_NONE)
- return 0;
+ return 'U';
+
+ if (actx->check_permissions &&
+ (dbf->mode != 0 || dbf->uid != 0 || dbf->gid != 0)) {
+ if ((fi.mode & 07777) != (dbf->mode & 07777))
+ return 'M';
+ if (fi.uid != dbf->uid || fi.gid != dbf->gid)
+ return 'M';
+ }
- /* FIXME: check uid/gid/mode; but they are not in DB */
+ return 0;
+}
+
+static int audit_directory(struct audit_ctx *actx,
+ struct apk_database *db,
+ struct apk_db_dir *dbd,
+ struct apk_file_info *fi)
+{
+ if (dbd == NULL)
+ return 'D';
+
+ if (actx->check_permissions &&
+ (dbd->mode != 0 || dbd->uid != 0 || dbd->gid != 0)) {
+ if ((fi->mode & 07777) != (dbd->mode & 07777))
+ return 'm';
+ if (fi->uid != dbd->uid || fi->gid != dbd->gid)
+ return 'm';
+ }
- return 1;
+ return 0;
}
-static int audit_directory(apk_hash_item item, void *ctx)
+struct audit_tree_ctx {
+ struct audit_ctx *actx;
+ struct apk_database *db;
+};
+
+static int audit_directory_tree(apk_hash_item item, void *ctx)
{
- struct apk_database *db = (struct apk_database *) ctx;
+ struct audit_tree_ctx *atctx = (struct audit_tree_ctx *) ctx;
+ struct audit_ctx *actx = atctx->actx;
+ struct apk_database *db = atctx->db;
struct apk_db_dir *dbd = (struct apk_db_dir *) item;
- struct apk_db_file *dbf;
struct apk_file_info fi;
struct dirent *de;
apk_blob_t bdir = APK_BLOB_PTR_LEN(dbd->name, dbd->namelen);
@@ -76,39 +113,37 @@ static int audit_directory(apk_hash_item item, void *ctx)
continue;
if (S_ISDIR(fi.mode)) {
- if (apk_db_dir_query(db, APK_BLOB_STR(tmp)) != NULL) {
- /* FIXME: check uid/gid/mode */
- continue;
- }
-
- reason = 'D';
+ struct apk_db_dir *dbd;
+ dbd = apk_db_dir_query(db, APK_BLOB_STR(tmp));
+ reason = audit_directory(actx, db, dbd, &fi);
} else {
+ struct apk_db_file *dbf;
dbf = apk_db_file_query(db, bdir, APK_BLOB_STR(de->d_name));
- if (dbf != NULL) {
- if (audit_file(db, dbf, tmp) == 0)
- continue;
- reason = 'U';
- } else {
- reason = 'A';
- }
+ reason = audit_file(actx, db, dbf, tmp);
}
- if (apk_verbosity < 1)
- printf("%s\n", tmp);
- else
- printf("%c %s\n", reason, tmp);
+ if (reason) {
+ if (apk_verbosity < 1)
+ printf("%s\n", tmp);
+ else
+ printf("%c %s\n", reason, tmp);
+ }
}
closedir(dir);
return 0;
}
-static int audit_backup(struct apk_database *db)
+static int audit_backup(struct audit_ctx *actx, struct apk_database *db)
{
- return apk_hash_foreach(&db->installed.dirs, audit_directory, db);
+ struct audit_tree_ctx atctx = {
+ .actx = actx,
+ .db = db,
+ };
+ return apk_hash_foreach(&db->installed.dirs, audit_directory_tree, &atctx);
}
-static int audit_system(struct apk_database *db)
+static int audit_system(struct audit_ctx *actx, struct apk_database *db)
{
struct apk_installed_package *ipkg;
struct apk_package *pkg;
@@ -131,7 +166,7 @@ static int audit_system(struct apk_database *db)
snprintf(name, sizeof(name), "%s/%s",
diri->dir->name, file->name);
- if (audit_file(db, file, name) == 0)
+ if (audit_file(actx, db, file, name) == 0)
continue;
if (apk_verbosity < 1) {
@@ -162,6 +197,9 @@ static int audit_parse(void *ctx, struct apk_db_options *dbopts,
case 0x10001:
actx->audit = audit_system;
break;
+ case 0x10002:
+ actx->check_permissions = 1;
+ break;
default:
return -1;
}
@@ -175,7 +213,7 @@ static int audit_main(void *ctx, struct apk_database *db, int argc, char **argv)
if (actx->audit == NULL)
return -EINVAL;
- return actx->audit(db);
+ return actx->audit(actx, db);
}
static struct apk_option audit_options[] = {
@@ -183,6 +221,7 @@ static struct apk_option audit_options[] = {
"List all modified configuration files that need to be backed up" },
{ 0x10001, "system", "Verify checksums of all installed files "
"(-q to print only modfied packages)" },
+ { 0x10002, "check-permissions", "Check file and directory uid/gid/mode too" },
};
static struct apk_applet apk_audit = {