Stop using jq

The jq is additional tool. Currently it's available in both RHEL
and CentOS base bootable container images. But, we better not
rely on it if someone removes it in future.

Author: jan-cerny

src/XCCDF/xccdf_session.c

@@ -1906,14 +1906,19 @@ struct xccdf_rule_result_iterator *xccdf_session_get_rule_results(const struct x
 	return xccdf_result_get_rule_results(session->xccdf.result);
 }
 
-static int system_is_in_bootc_mode(void)
+static bool _system_is_in_bootc_mode(void)
 {
 #ifdef OS_WINDOWS
-	return 0;
+	return false;
 #else
-	FILE *output = popen("bootc status --format json 2>/dev/null | jq \".status.booted\" 2>/dev/null", "r");
+	#define BOOTC_PATH "/usr/bin/bootc"
+	struct stat statbuf;
+	if (stat(BOOTC_PATH, &statbuf) == -1) {
+		return false;
+	}
+	FILE *output = popen(BOOTC_PATH " status --format json 2>/dev/null", "r");
 	if (output == NULL) {
-		return 0;
+		return false;
 	}
 	char buf[1024] = {0};
 	int c;
@@ -1923,7 +1928,7 @@ static int system_is_in_bootc_mode(void)
 		i++;
 	}
 	pclose(output);
-	return *buf != '\0' && strcmp(buf, "null\n") != 0;
+	return *buf != '\0' && strstr(buf, "\"status:\"null") == NULL;
 #endif
 }
 
@@ -1938,7 +1943,7 @@ int xccdf_session_remediate(struct xccdf_session *session)
 		oscap_seterr(OSCAP_EFAMILY_OSCAP, "Can't perform remediation in offline mode: not implemented");
 		return 1;
 	}
-	if (system_is_in_bootc_mode()) {
+	if (_system_is_in_bootc_mode()) {
 		oscap_seterr(OSCAP_EFAMILY_OSCAP,
 			"Detected running Image Mode operating system. OpenSCAP can't "
 			"perform remediation of this system because majority of the "