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-rw-r--r--src/analyze/analyze-verify.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/src/analyze/analyze-verify.c b/src/analyze/analyze-verify.c
new file mode 100644
index 0000000..1d8a1ed
--- /dev/null
+++ b/src/analyze/analyze-verify.c
@@ -0,0 +1,287 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <stdlib.h>
+
+#include "alloc-util.h"
+#include "all-units.h"
+#include "analyze-verify.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "log.h"
+#include "manager.h"
+#include "pager.h"
+#include "path-util.h"
+#include "strv.h"
+#include "unit-name.h"
+
+static int prepare_filename(const char *filename, char **ret) {
+ int r;
+ const char *name;
+ _cleanup_free_ char *abspath = NULL;
+ _cleanup_free_ char *dir = NULL;
+ _cleanup_free_ char *with_instance = NULL;
+ char *c;
+
+ assert(filename);
+ assert(ret);
+
+ r = path_make_absolute_cwd(filename, &abspath);
+ if (r < 0)
+ return r;
+
+ name = basename(abspath);
+ if (!unit_name_is_valid(name, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) {
+ r = unit_name_replace_instance(name, "i", &with_instance);
+ if (r < 0)
+ return r;
+ }
+
+ dir = dirname_malloc(abspath);
+ if (!dir)
+ return -ENOMEM;
+
+ c = path_join(dir, with_instance ?: name);
+ if (!c)
+ return -ENOMEM;
+
+ *ret = c;
+ return 0;
+}
+
+static int generate_path(char **var, char **filenames) {
+ const char *old;
+ char **filename;
+
+ _cleanup_strv_free_ char **ans = NULL;
+ int r;
+
+ STRV_FOREACH(filename, filenames) {
+ char *t;
+
+ t = dirname_malloc(*filename);
+ if (!t)
+ return -ENOMEM;
+
+ r = strv_consume(&ans, t);
+ if (r < 0)
+ return r;
+ }
+
+ assert_se(strv_uniq(ans));
+
+ /* First, prepend our directories. Second, if some path was specified, use that, and
+ * otherwise use the defaults. Any duplicates will be filtered out in path-lookup.c.
+ * Treat explicit empty path to mean that nothing should be appended.
+ */
+ old = getenv("SYSTEMD_UNIT_PATH");
+ if (!streq_ptr(old, "")) {
+ if (!old)
+ old = ":";
+
+ r = strv_extend(&ans, old);
+ if (r < 0)
+ return r;
+ }
+
+ *var = strv_join(ans, ":");
+ if (!*var)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int verify_socket(Unit *u) {
+ int r;
+
+ assert(u);
+
+ if (u->type != UNIT_SOCKET)
+ return 0;
+
+ /* Cannot run this without the service being around */
+
+ /* This makes sure instance is created if necessary. */
+ r = socket_instantiate_service(SOCKET(u));
+ if (r < 0)
+ return log_unit_error_errno(u, r, "Socket cannot be started, failed to create instance: %m");
+
+ /* This checks both type of sockets */
+ if (UNIT_ISSET(SOCKET(u)->service)) {
+ Service *service;
+
+ service = SERVICE(UNIT_DEREF(SOCKET(u)->service));
+ log_unit_debug(u, "Using %s", UNIT(service)->id);
+
+ if (UNIT(service)->load_state != UNIT_LOADED) {
+ log_unit_error(u, "Service %s not loaded, %s cannot be started.", UNIT(service)->id, u->id);
+ return -ENOENT;
+ }
+ }
+
+ return 0;
+}
+
+static int verify_executable(Unit *u, ExecCommand *exec) {
+ if (!exec)
+ return 0;
+
+ if (access(exec->path, X_OK) < 0)
+ return log_unit_error_errno(u, errno, "Command %s is not executable: %m", exec->path);
+
+ return 0;
+}
+
+static int verify_executables(Unit *u) {
+ ExecCommand *exec;
+ int r = 0, k;
+ unsigned i;
+
+ assert(u);
+
+ exec = u->type == UNIT_SOCKET ? SOCKET(u)->control_command :
+ u->type == UNIT_MOUNT ? MOUNT(u)->control_command :
+ u->type == UNIT_SWAP ? SWAP(u)->control_command : NULL;
+ k = verify_executable(u, exec);
+ if (k < 0 && r == 0)
+ r = k;
+
+ if (u->type == UNIT_SERVICE)
+ for (i = 0; i < ELEMENTSOF(SERVICE(u)->exec_command); i++) {
+ k = verify_executable(u, SERVICE(u)->exec_command[i]);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ if (u->type == UNIT_SOCKET)
+ for (i = 0; i < ELEMENTSOF(SOCKET(u)->exec_command); i++) {
+ k = verify_executable(u, SOCKET(u)->exec_command[i]);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ return r;
+}
+
+static int verify_documentation(Unit *u, bool check_man) {
+ char **p;
+ int r = 0, k;
+
+ STRV_FOREACH(p, u->documentation) {
+ log_unit_debug(u, "Found documentation item: %s", *p);
+
+ if (check_man && startswith(*p, "man:")) {
+ k = show_man_page(*p + 4, true);
+ if (k != 0) {
+ if (k < 0)
+ log_unit_error_errno(u, k, "Can't show %s: %m", *p + 4);
+ else {
+ log_unit_error(u, "Command 'man %s' failed with code %d", *p + 4, k);
+ k = -ENOEXEC;
+ }
+ if (r == 0)
+ r = k;
+ }
+ }
+ }
+
+ /* Check remote URLs? */
+
+ return r;
+}
+
+static int verify_unit(Unit *u, bool check_man) {
+ _cleanup_(sd_bus_error_free) sd_bus_error err = SD_BUS_ERROR_NULL;
+ int r, k;
+
+ assert(u);
+
+ if (DEBUG_LOGGING)
+ unit_dump(u, stdout, "\t");
+
+ log_unit_debug(u, "Creating %s/start job", u->id);
+ r = manager_add_job(u->manager, JOB_START, u, JOB_REPLACE, &err, NULL);
+ if (r < 0)
+ log_unit_error_errno(u, r, "Failed to create %s/start: %s", u->id, bus_error_message(&err, r));
+
+ k = verify_socket(u);
+ if (k < 0 && r == 0)
+ r = k;
+
+ k = verify_executables(u);
+ if (k < 0 && r == 0)
+ r = k;
+
+ k = verify_documentation(u, check_man);
+ if (k < 0 && r == 0)
+ r = k;
+
+ return r;
+}
+
+int verify_units(char **filenames, UnitFileScope scope, bool check_man, bool run_generators) {
+ const ManagerTestRunFlags flags =
+ MANAGER_TEST_RUN_BASIC |
+ MANAGER_TEST_RUN_ENV_GENERATORS |
+ run_generators * MANAGER_TEST_RUN_GENERATORS;
+
+ _cleanup_(manager_freep) Manager *m = NULL;
+ Unit *units[strv_length(filenames)];
+ _cleanup_free_ char *var = NULL;
+ int r = 0, k, i, count = 0;
+ char **filename;
+
+ if (strv_isempty(filenames))
+ return 0;
+
+ /* set the path */
+ r = generate_path(&var, filenames);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate unit load path: %m");
+
+ assert_se(set_unit_path(var) >= 0);
+
+ r = manager_new(scope, flags, &m);
+ if (r < 0)
+ return log_error_errno(r, "Failed to initialize manager: %m");
+
+ log_debug("Starting manager...");
+
+ r = manager_startup(m, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ manager_clear_jobs(m);
+
+ log_debug("Loading remaining units from the command line...");
+
+ STRV_FOREACH(filename, filenames) {
+ _cleanup_free_ char *prepared = NULL;
+
+ log_debug("Handling %s...", *filename);
+
+ k = prepare_filename(*filename, &prepared);
+ if (k < 0) {
+ log_error_errno(k, "Failed to prepare filename %s: %m", *filename);
+ if (r == 0)
+ r = k;
+ continue;
+ }
+
+ k = manager_load_startable_unit_or_warn(m, NULL, prepared, &units[count]);
+ if (k < 0 && r == 0)
+ r = k;
+ else
+ count++;
+ }
+
+ for (i = 0; i < count; i++) {
+ k = verify_unit(units[i], check_man);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ return r;
+}
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