Introduce virLeaseReadCustomLeaseFile which will populate
the new leases array with all the leases, except for expired
ones and the ones matching 'ip_to_delete'.
This removes five variables from main().
---
src/network/leaseshelper.c | 194 +++++++++++++++++++++++++--------------------
1 file changed, 108 insertions(+), 86 deletions(-)
diff --git a/src/network/leaseshelper.c b/src/network/leaseshelper.c
index 3d2dace..8bf1c01 100644
--- a/src/network/leaseshelper.c
+++ b/src/network/leaseshelper.c
@@ -105,35 +105,135 @@ VIR_ENUM_DECL(virLeaseAction);
VIR_ENUM_IMPL(virLeaseAction, VIR_LEASE_ACTION_LAST,
"add", "old", "del", "init");
+static int
+virLeaseReadCustomLeaseFile(virJSONValuePtr leases_array_new,
+ const char *custom_lease_file,
+ const char *ip_to_delete,
+ char **server_duid)
+{
+ char *lease_entries = NULL;
+ virJSONValuePtr leases_array = NULL;
+ long long currtime = 0;
+ long long expirytime;
+ int custom_lease_file_len = 0;
+ virJSONValuePtr lease_tmp = NULL;
+ const char *ip_tmp = NULL;
+ const char *server_duid_tmp = NULL;
+ size_t i;
+ int ret = -1;
+
+ currtime = (long long) time(NULL);
+
+ /* Read entire contents */
+ if ((custom_lease_file_len = virFileReadAll(custom_lease_file,
+
VIR_NETWORK_DHCP_LEASE_FILE_SIZE_MAX,
+ &lease_entries)) < 0) {
+ goto cleanup;
+ }
+
+ /* Check for previous leases */
+ if (custom_lease_file_len) {
+ if (!(leases_array = virJSONValueFromString(lease_entries))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("invalid json in file: %s, rewriting it"),
+ custom_lease_file);
+ } else {
+ if (!virJSONValueIsArray(leases_array)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("couldn't fetch array of leases"));
+ goto cleanup;
+ }
+
+ i = 0;
+ while (i < virJSONValueArraySize(leases_array)) {
+
+ if (!(lease_tmp = virJSONValueArrayGet(leases_array, i))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("failed to parse json"));
+ goto cleanup;
+ }
+
+ if (!(ip_tmp = virJSONValueObjectGetString(lease_tmp,
"ip-address")) ||
+ (virJSONValueObjectGetNumberLong(lease_tmp, "expiry-time",
&expirytime) < 0)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("failed to parse json"));
+ goto cleanup;
+ }
+ /* Check whether lease has expired or not */
+ if (expirytime < currtime) {
+ i++;
+ continue;
+ }
+
+ /* Check whether lease has to be included or not */
+ if (ip_to_delete && STREQ(ip_tmp, ip_to_delete)) {
+ i++;
+ continue;
+ }
+
+ if (strchr(ip_tmp, ':')) {
+ /* This is an ipv6 lease */
+ if ((server_duid_tmp
+ = virJSONValueObjectGetString(lease_tmp,
"server-duid"))) {
+ if (!*server_duid && VIR_STRDUP(*server_duid,
server_duid_tmp) < 0) {
+ /* Control reaches here when the 'action' is not
for an
+ * ipv6 lease or, for some weird reason the env var
+ * DNSMASQ_SERVER_DUID wasn't set*/
+ goto cleanup;
+ }
+ } else {
+ /* Inject server-duid into those ipv6 leases which
+ * didn't have it previously, for example, those
+ * created by leaseshelper from libvirt 1.2.6 */
+ if (virJSONValueObjectAppendString(lease_tmp,
"server-duid", *server_duid) < 0)
+ goto cleanup;
+ }
+ }
+
+ /* Move old lease to new array */
+ if (virJSONValueArrayAppend(leases_array_new, lease_tmp) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("failed to create json"));
+ goto cleanup;
+ }
+
+ ignore_value(virJSONValueArraySteal(leases_array, i));
+ }
+ }
+ }
+
+ ret = 0;
+
+ cleanup:
+ virJSONValueFree(leases_array);
+ VIR_FREE(lease_entries);
+ return ret;
+}
+
int
main(int argc, char **argv)
{
char *exptime = NULL;
char *pid_file = NULL;
- char *lease_entries = NULL;
char *custom_lease_file = NULL;
const char *ip = NULL;
const char *mac = NULL;
const char *ip_tmp = NULL;
const char *leases_str = NULL;
- const char *server_duid_tmp = NULL;
const char *iaid = virGetEnvAllowSUID("DNSMASQ_IAID");
const char *clientid = virGetEnvAllowSUID("DNSMASQ_CLIENT_ID");
const char *interface = virGetEnvAllowSUID("DNSMASQ_INTERFACE");
const char *exptime_tmp = virGetEnvAllowSUID("DNSMASQ_LEASE_EXPIRES");
const char *hostname = virGetEnvAllowSUID("DNSMASQ_SUPPLIED_HOSTNAME");
char *server_duid = NULL;
- long long currtime = 0;
long long expirytime = 0;
size_t i = 0;
int action = -1;
int pid_file_fd = -1;
int rv = EXIT_FAILURE;
- int custom_lease_file_len = 0;
bool delete = false;
virJSONValuePtr lease_new = NULL;
virJSONValuePtr lease_tmp = NULL;
- virJSONValuePtr leases_array = NULL;
virJSONValuePtr leases_array_new = NULL;
virSetErrorFunc(NULL, NULL);
@@ -230,13 +330,6 @@ main(int argc, char **argv)
if (virFileTouch(custom_lease_file, 0644) < 0)
goto cleanup;
- /* Read entire contents */
- if ((custom_lease_file_len = virFileReadAll(custom_lease_file,
-
VIR_NETWORK_DHCP_LEASE_FILE_SIZE_MAX,
- &lease_entries)) < 0) {
- goto cleanup;
- }
-
switch ((enum virLeaseActionFlags) action) {
case VIR_LEASE_ACTION_ADD:
case VIR_LEASE_ACTION_OLD:
@@ -308,78 +401,9 @@ main(int argc, char **argv)
goto cleanup;
}
- currtime = (long long) time(NULL);
-
- /* Check for previous leases */
- if (custom_lease_file_len) {
- if (!(leases_array = virJSONValueFromString(lease_entries))) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("invalid json in file: %s, rewriting it"),
- custom_lease_file);
- } else {
- if (!virJSONValueIsArray(leases_array)) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("couldn't fetch array of leases"));
- goto cleanup;
- }
-
- i = 0;
- while (i < virJSONValueArraySize(leases_array)) {
-
- if (!(lease_tmp = virJSONValueArrayGet(leases_array, i))) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("failed to parse json"));
- goto cleanup;
- }
-
- if (!(ip_tmp = virJSONValueObjectGetString(lease_tmp,
"ip-address")) ||
- (virJSONValueObjectGetNumberLong(lease_tmp, "expiry-time",
&expirytime) < 0)) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("failed to parse json"));
- goto cleanup;
- }
- /* Check whether lease has expired or not */
- if (expirytime < currtime) {
- i++;
- continue;
- }
-
- /* Check whether lease has to be included or not */
- if (delete && STREQ(ip_tmp, ip)) {
- i++;
- continue;
- }
-
- if (strchr(ip_tmp, ':')) {
- /* This is an ipv6 lease */
- if ((server_duid_tmp
- = virJSONValueObjectGetString(lease_tmp,
"server-duid"))) {
- if (!server_duid && VIR_STRDUP(server_duid,
server_duid_tmp) < 0) {
- /* Control reaches here when the 'action' is not
for an
- * ipv6 lease or, for some weird reason the env var
- * DNSMASQ_SERVER_DUID wasn't set*/
- goto cleanup;
- }
- } else {
- /* Inject server-duid into those ipv6 leases which
- * didn't have it previously, for example, those
- * created by leaseshelper from libvirt 1.2.6 */
- if (virJSONValueObjectAppendString(lease_tmp,
"server-duid", server_duid) < 0)
- goto cleanup;
- }
- }
-
- /* Move old lease to new array */
- if (virJSONValueArrayAppend(leases_array_new, lease_tmp) < 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("failed to create json"));
- goto cleanup;
- }
-
- ignore_value(virJSONValueArraySteal(leases_array, i));
- }
- }
- }
+ if (virLeaseReadCustomLeaseFile(leases_array_new, custom_lease_file,
+ delete ? ip : NULL, &server_duid) < 0)
+ goto cleanup;
switch ((enum virLeaseActionFlags) action) {
case VIR_LEASE_ACTION_INIT:
@@ -476,10 +500,8 @@ main(int argc, char **argv)
VIR_FREE(pid_file);
VIR_FREE(exptime);
VIR_FREE(server_duid);
- VIR_FREE(lease_entries);
VIR_FREE(custom_lease_file);
virJSONValueFree(lease_new);
- virJSONValueFree(leases_array);
virJSONValueFree(leases_array_new);
return rv;
--
2.4.6
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