--- /dev/null
+/* This is a copy of the hellolibvirt example demonstaring how to use
+ * virConnectOpenAuth with a custom auth callback */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <libvirt/libvirt.h>
+#include <libvirt/virterror.h>
+
+static void
+showError(virConnectPtr conn)
+{
+ int ret;
+ virErrorPtr err;
+
+ err = malloc(sizeof(*err));
+ if (err == NULL) {
+ printf("Could not allocate memory for error data\n");
+ goto out;
+ }
+
+ ret = virConnCopyLastError(conn, err);
+
+ switch (ret) {
+ case 0:
+ printf("No error found\n");
+ break;
+
+ case -1:
+ printf("Parameter error when attempting to get last error\n");
+ break;
+
+ default:
+ printf("libvirt reported: \"%s\"\n", err->message);
+ break;
+ }
+
+ virResetError(err);
+ free(err);
+
+out:
+ return;
+}
+
+
+static int
+showHypervisorInfo(virConnectPtr conn)
+{
+ int ret = 0;
+ unsigned long hvVer, major, minor, release;
+ const char *hvType;
+
+ /* virConnectGetType returns a pointer to a static string, so no
+ * allocation or freeing is necessary; it is possible for the call
+ * to fail if, for example, there is no connection to a
+ * hypervisor, so check what it returns. */
+ hvType = virConnectGetType(conn);
+ if (hvType == NULL) {
+ ret = 1;
+ printf("Failed to get hypervisor type\n");
+ showError(conn);
+ goto out;
+ }
+
+ if (virConnectGetVersion(conn, &hvVer) != 0) {
+ ret = 1;
+ printf("Failed to get hypervisor version\n");
+ showError(conn);
+ goto out;
+ }
+
+ major = hvVer / 1000000;
+ hvVer %= 1000000;
+ minor = hvVer / 1000;
+ release = hvVer % 1000;
+
+ printf("Hypervisor: \"%s\" version: %lu.%lu.%lu\n",
+ hvType,
+ major,
+ minor,
+ release);
+
+out:
+ return ret;
+}
+
+
+static int
+showDomains(virConnectPtr conn)
+{
+ int ret = 0, i, numNames, numInactiveDomains, numActiveDomains;
+ char **nameList = NULL;
+
+ numActiveDomains = virConnectNumOfDomains(conn);
+ if (numActiveDomains == -1) {
+ ret = 1;
+ printf("Failed to get number of active domains\n");
+ showError(conn);
+ goto out;
+ }
+
+ numInactiveDomains = virConnectNumOfDefinedDomains(conn);
+ if (numInactiveDomains == -1) {
+ ret = 1;
+ printf("Failed to get number of inactive domains\n");
+ showError(conn);
+ goto out;
+ }
+
+ printf("There are %d active and %d inactive domains\n",
+ numActiveDomains, numInactiveDomains);
+
+ nameList = malloc(sizeof(*nameList) * numInactiveDomains);
+
+ if (nameList == NULL) {
+ ret = 1;
+ printf("Could not allocate memory for list of inactive domains\n");
+ goto out;
+ }
+
+ numNames = virConnectListDefinedDomains(conn,
+ nameList,
+ numInactiveDomains);
+
+ if (numNames == -1) {
+ ret = 1;
+ printf("Could not get list of defined domains from hypervisor\n");
+ showError(conn);
+ goto out;
+ }
+
+ if (numNames > 0) {
+ printf("Inactive domains:\n");
+ }
+
+ for (i = 0 ; i < numNames ; i++) {
+ printf(" %s\n", *(nameList + i));
+ /* The API documentation doesn't say so, but the names
+ * returned by virConnectListDefinedDomains are strdup'd and
+ * must be freed here. */
+ free(*(nameList + i));
+ }
+
+out:
+ free(nameList);
+ return ret;
+}
+
+/* Struct to pass the credentials to the auth callback via the cbdata pointer */
+struct _AuthData {
+ char *username;
+ char *password;
+};
+
+typedef struct _AuthData AuthData;
+
+/* This function will be called by libvirt to obtain credentials in order to
+ * authenticate to the hypervisor */
+static int
+authCallback(virConnectCredentialPtr cred, unsigned int ncred, void *cbdata)
+{
+ int i;
+ AuthData *authData = cbdata;
+
+ /* libvirt might request multiple credentials in a single call.
+ * This example supports VIR_CRED_AUTHNAME and VIR_CRED_PASSPHRASE
+ * credentials only, but there are several other types.
+ *
+ * A request may also contain a prompt message that can be displayed
+ * to the user and a challenge. The challenge is specific to the
+ * credential type and hypervisor type.
+ *
+ * For example the ESX driver passes the hostname of the ESX or vCenter
+ * server as challenge. This allows a auth callback to return the
+ * proper credentials. */
+ for (i = 0; i < ncred ; ++i) {
+ switch (cred[i].type) {
+ case VIR_CRED_AUTHNAME:
+ cred[i].result = strdup(authData->username);
+
+ if (cred[i].result == NULL) {
+ return -1;
+ }
+
+ cred[i].resultlen = strlen(cred[i].result);
+ break;
+
+ case VIR_CRED_PASSPHRASE:
+ cred[i].result = strdup(authData->password);
+
+ if (cred[i].result == NULL) {
+ return -1;
+ }
+
+ cred[i].resultlen = strlen(cred[i].result);
+ break;
+
+ default:
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+/* The list of credential types supported by our auth callback */
+static int credTypes[] = {
+ VIR_CRED_AUTHNAME,
+ VIR_CRED_PASSPHRASE
+};
+
+
+/* The auth struct that will be passed to virConnectOpenAuth */
+static virConnectAuth auth = {
+ credTypes,
+ sizeof(credTypes) / sizeof(int),
+ authCallback,
+ NULL, // cbdata will be initialized in main
+};
+
+
+int
+main(int argc, char *argv[])
+{
+ int ret = 0;
+ virConnectPtr conn;
+ char *uri;
+ AuthData authData;
+
+ if (argc != 4) {
+ ret = 1;
+ printf("Usage: %s <uri> <username> <password>\n", argv[0]);
+ goto out;
+ }
+
+ uri = argv[1];
+ authData.username = argv[2];
+ authData.password = argv[3];
+ auth.cbdata = &authData;
+
+ printf("Attempting to connect to hypervisor\n");
+
+ conn = virConnectOpenAuth(uri, &auth, 0);
+
+ if (NULL == conn) {
+ ret = 1;
+ printf("No connection to hypervisor\n");
+ showError(conn);
+ goto out;
+ }
+
+ uri = virConnectGetURI(conn);
+ if (uri == NULL) {
+ ret = 1;
+ printf("Failed to get URI for hypervisor connection\n");
+ showError(conn);
+ goto disconnect;
+ }
+
+ printf("Connected to hypervisor at \"%s\"\n", uri);
+ free(uri);
+
+ if (showHypervisorInfo(conn) != 0) {
+ ret = 1;
+ goto disconnect;
+ }
+
+ if (showDomains(conn) != 0) {
+ ret = 1;
+ goto disconnect;
+ }
+
+ disconnect:
+ if (virConnectClose(conn) != 0) {
+ printf("Failed to disconnect from hypervisor\n");
+ showError(conn);
+ ret = 1;
+ } else {
+ printf("Disconnected from hypervisor\n");
+ }
+
+ out:
+ return ret;
+}
projects / people / liuw / libxenctrl-split / libvirt.git / commitdiff