Resolve unknown profile in tailoring

If someone provides a tailoring file and a profile ID that isn't
present in the tailoring file, it will print an error message.

Author: jan-cerny

tests/oscap_info_profiles/test_list_rules.sh

@@ -81,4 +81,18 @@ grep -q "xccdf_com.example.www_rule_R2" $stdout
 :> $stdout
 rm -rf "$temp_dir"
 
+# Test 7: --list-rules with tailoring referencing SDS via file: prefix, no cref,
+#         providing the original profile instead of the customized one
+temp_dir="$(mktemp -d)"
+cp "$srcdir/test_reference_ds.xml" $temp_dir
+tailoring_sds_nf="test_tailoring_file_sds.xml"
+sed "s;TEMP_DIRECTORY_PLACEHOLDER;$temp_dir;" "$srcdir/$tailoring_sds_nf" > "$temp_dir/$tailoring_sds_nf"
+$OSCAP info --profile "xccdf_com.example.www_profile_P1" --list-rules "$temp_dir/$tailoring_sds_nf" > $stdout 2> $stderr
+[[ -f $stdout ]]; [[ ! -s $stdout ]]; :> $stdout
+grep -q "Profile 'xccdf_com.example.www_profile_P1' not found in the tailoring file. Provide the customized profile ID. Get available profiles using:" "$stderr"
+grep -q "$ oscap info $temp_dir/$tailoring_sds_nf" "$stderr"
+[[ "$(wc -l < $stderr)" -eq 2 ]]
+:> $stderr
+rm -rf "$temp_dir"
+
 rm -f $stdout $stderr

utils/oscap-info.c

@@ -1006,7 +1006,11 @@ static int app_info(const struct oscap_action *action)
 			}
 			xccdf_policy_model_set_tailoring(policy_model, tailoring);
 			const char *profile_id = tailoring_get_profile_or_report_multiple_ids(tailoring, action->profile, action->file);
-			if (profile_id != NULL) {
+			if (profile_id == NULL) {
+				fprintf(stderr,
+					"Profile '%s' not found in the tailoring file. Provide the customized profile ID. "
+					"Get available profiles using:\n$ oscap info %s\n", action->profile, action->file);
+			} else {
 				if (action->list_rules) {
 					_print_rules_for_profile(policy_model, profile_id);
 				} else {