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-rw-r--r--src/shared/import-util.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/src/shared/import-util.c b/src/shared/import-util.c
new file mode 100644
index 0000000..bcd6c0c
--- /dev/null
+++ b/src/shared/import-util.c
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+#include <string.h>
+
+#include "alloc-util.h"
+#include "btrfs-util.h"
+#include "import-util.h"
+#include "log.h"
+#include "macro.h"
+#include "path-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "util.h"
+
+int import_url_last_component(const char *url, char **ret) {
+ const char *e, *p;
+ char *s;
+
+ e = strchrnul(url, '?');
+
+ while (e > url && e[-1] == '/')
+ e--;
+
+ p = e;
+ while (p > url && p[-1] != '/')
+ p--;
+
+ if (e <= p)
+ return -EINVAL;
+
+ s = strndup(p, e - p);
+ if (!s)
+ return -ENOMEM;
+
+ *ret = s;
+ return 0;
+}
+
+int import_url_change_last_component(const char *url, const char *suffix, char **ret) {
+ const char *e;
+ char *s;
+
+ assert(url);
+ assert(ret);
+
+ e = strchrnul(url, '?');
+
+ while (e > url && e[-1] == '/')
+ e--;
+
+ while (e > url && e[-1] != '/')
+ e--;
+
+ if (e <= url)
+ return -EINVAL;
+
+ s = new(char, (e - url) + strlen(suffix) + 1);
+ if (!s)
+ return -ENOMEM;
+
+ strcpy(mempcpy(s, url, e - url), suffix);
+ *ret = s;
+ return 0;
+}
+
+static const char* const import_verify_table[_IMPORT_VERIFY_MAX] = {
+ [IMPORT_VERIFY_NO] = "no",
+ [IMPORT_VERIFY_CHECKSUM] = "checksum",
+ [IMPORT_VERIFY_SIGNATURE] = "signature",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(import_verify, ImportVerify);
+
+int tar_strip_suffixes(const char *name, char **ret) {
+ const char *e;
+ char *s;
+
+ e = endswith(name, ".tar");
+ if (!e)
+ e = endswith(name, ".tar.xz");
+ if (!e)
+ e = endswith(name, ".tar.gz");
+ if (!e)
+ e = endswith(name, ".tar.bz2");
+ if (!e)
+ e = endswith(name, ".tgz");
+ if (!e)
+ e = strchr(name, 0);
+
+ if (e <= name)
+ return -EINVAL;
+
+ s = strndup(name, e - name);
+ if (!s)
+ return -ENOMEM;
+
+ *ret = s;
+ return 0;
+}
+
+int raw_strip_suffixes(const char *p, char **ret) {
+
+ static const char suffixes[] =
+ ".xz\0"
+ ".gz\0"
+ ".bz2\0"
+ ".raw\0"
+ ".qcow2\0"
+ ".img\0"
+ ".bin\0";
+
+ _cleanup_free_ char *q = NULL;
+
+ q = strdup(p);
+ if (!q)
+ return -ENOMEM;
+
+ for (;;) {
+ const char *sfx;
+ bool changed = false;
+
+ NULSTR_FOREACH(sfx, suffixes) {
+ char *e;
+
+ e = endswith(q, sfx);
+ if (e) {
+ *e = 0;
+ changed = true;
+ }
+ }
+
+ if (!changed)
+ break;
+ }
+
+ *ret = TAKE_PTR(q);
+
+ return 0;
+}
+
+int import_assign_pool_quota_and_warn(const char *path) {
+ int r;
+
+ r = btrfs_subvol_auto_qgroup("/var/lib/machines", 0, true);
+ if (r == -ENOTTY) {
+ log_debug_errno(r, "Failed to set up default quota hierarchy for /var/lib/machines, as directory is not on btrfs or not a subvolume. Ignoring.");
+ return 0;
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set up default quota hierarchy for /var/lib/machines: %m");
+ if (r > 0)
+ log_info("Set up default quota hierarchy for /var/lib/machines.");
+
+ r = btrfs_subvol_auto_qgroup(path, 0, true);
+ if (r == -ENOTTY) {
+ log_debug_errno(r, "Failed to set up quota hierarchy for %s, as directory is not on btrfs or not a subvolume. Ignoring.", path);
+ return 0;
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to set up default quota hierarchy for %s: %m", path);
+ if (r > 0)
+ log_debug("Set up default quota hierarchy for %s.", path);
+
+ return 0;
+}