source: branches/samba-3.3.x/source/lib/netapi/examples/common.c

#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <inttypes.h>

#include <popt.h>
#include <netapi.h>

void popt_common_callback(poptContext con,
                         enum poptCallbackReason reason,
                         const struct poptOption *opt,
                         const char *arg, const void *data)
{
        struct libnetapi_ctx *ctx = NULL;

        libnetapi_getctx(&ctx);

        if (reason == POPT_CALLBACK_REASON_PRE) {
        }

        if (reason == POPT_CALLBACK_REASON_POST) {
        }

        if (!opt) {
                return;
        }
        switch (opt->val) {
                case 'U': {
                        char *puser = strdup(arg);
                        char *p = NULL;

                        if ((p = strchr(puser,'%'))) {
                                size_t len;
                                *p = 0;
                                libnetapi_set_username(ctx, puser);
                                libnetapi_set_password(ctx, p+1);
                                len = strlen(p+1);
                                memset(strchr(arg,'%')+1,'X',len);
                        } else {
                                libnetapi_set_username(ctx, puser);
                        }
                        free(puser);
                        break;
                }
                case 'd':
                        libnetapi_set_debuglevel(ctx, arg);
                        break;
                case 'p':
                        libnetapi_set_password(ctx, arg);
                        break;
                case 'k':
                        libnetapi_set_use_kerberos(ctx);
                        break;
        }
}

struct poptOption popt_common_netapi_examples[] = {
        { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST, (void *)popt_common_callback },
        { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Username used for connection", "USERNAME" },
        { "password", 'p', POPT_ARG_STRING, NULL, 'p', "Password used for connection", "PASSWORD" },
        { "debuglevel", 'd', POPT_ARG_STRING, NULL, 'd', "Debuglevel", "DEBUGLEVEL" },
        { "kerberos", 'k', POPT_ARG_NONE, NULL, 'k', "Use Kerberos", NULL },
        POPT_TABLEEND
};