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https://gitlab.com/libvirt/libvirt.git
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117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <inttypes.h>
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#include <libvirt/libvirt-admin.h>
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static const char *
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exampleTransportToString(int transport)
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{
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const char *str = NULL;
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switch ((virClientTransport) transport) {
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case VIR_CLIENT_TRANS_UNIX:
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str = "unix";
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break;
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case VIR_CLIENT_TRANS_TCP:
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str = "tcp";
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break;
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case VIR_CLIENT_TRANS_TLS:
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str = "tls";
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break;
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}
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return str ? str : "unknown";
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}
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static char *
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exampleGetTimeStr(time_t then)
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{
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char *ret = NULL;
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struct tm timeinfo;
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struct tm *timeinfop;
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/* localtime_r() is smarter, but since mingw lacks it and this
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* example is single-threaded, we can get away with localtime */
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if (!(timeinfop = localtime(&then)))
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return NULL;
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timeinfo = *timeinfop;
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if (!(ret = calloc(64, sizeof(char))))
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return NULL;
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if (strftime(ret, 64, "%Y-%m-%d %H:%M:%S%z",
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&timeinfo) == 0) {
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free(ret);
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return NULL;
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}
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return ret;
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}
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int main(int argc, char **argv)
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{
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int ret = -1;
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virAdmConnectPtr conn = NULL;
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virAdmServerPtr srv = NULL; /* which server to list the clients from */
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virAdmClientPtr *clients = NULL; /* where to store the servers */
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ssize_t i = 0;
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int count = 0;
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if (argc != 2) {
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fprintf(stderr, "One argument specifying the server to list connected "
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"clients for is expected\n");
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return -1;
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}
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/* first, open a connection to the daemon */
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if (!(conn = virAdmConnectOpen(NULL, 0)))
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return -1;
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/* first a virAdmServerPtr handle is necessary to obtain, that is done by
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* doing a lookup for specific server, let's get a handle on "libvirtd"
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* server
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*/
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if (!(srv = virAdmConnectLookupServer(conn, argv[1], 0)))
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goto cleanup;
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/* now get the currently connected clients to server @srv */
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if ((count = virAdmServerListClients(srv, &clients, 0)) < 0)
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goto cleanup;
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/* let's print the currently connected clients and some basic info about
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* them, we have 2 options how to iterate over the returned list,
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* use @count as the boundary or use the fact that @clients are guaranteed
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* to contain 1 extra element NULL;
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* this example uses the first option
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*/
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printf(" %-5s %-15s %-15s\n%s\n", "Id", "Transport", "Connected since",
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"--------------------------------------------------");
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for (i = 0; i < count; i++) {
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virAdmClientPtr client = clients[i];
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unsigned long long id = virAdmClientGetID(client);
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int transport = virAdmClientGetTransport(client);
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char * timestr = NULL;
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if (!(timestr =
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exampleGetTimeStr(virAdmClientGetTimestamp(client))))
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goto cleanup;
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printf(" %-5" PRIu64 " %-15s %-15s\n", (uint64_t)id,
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exampleTransportToString(transport), timestr);
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free(timestr);
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}
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ret = 0;
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cleanup:
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/* Once finished, free the list of clients, free the server handle and
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* close the connection properly, @conn will be deallocated automatically
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*/
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for (i = 0; i < count; i++)
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virAdmClientFree(clients[i]);
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free(clients);
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virAdmServerFree(srv);
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virAdmConnectClose(conn);
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return ret;
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}
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