Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1400 insertions, 0 deletions

diff --git a/lib/cmdline/cmdline.c b/lib/cmdline/cmdline.c
new file mode 100644
index 0000000..9f4e964
--- /dev/null
+++ b/lib/cmdline/cmdline.c
@@ -0,0 +1,1400 @@
+/*
+ * Copyright (c) 2020      Andreas Schneider <asn@samba.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+#include "lib/param/param.h"
+#include "dynconfig/dynconfig.h"
+#include "auth/gensec/gensec.h"
+#include "libcli/smb/smb_util.h"
+#include "cmdline_private.h"
+
+#include <samba/version.h>
+
+static TALLOC_CTX *cmdline_mem_ctx;
+static struct loadparm_context *cmdline_lp_ctx;
+static struct cli_credentials *cmdline_creds;
+static samba_cmdline_load_config cmdline_load_config_fn;
+static struct samba_cmdline_daemon_cfg cmdline_daemon_cfg;
+
+static NTSTATUS (*cli_credentials_set_machine_account_fn)(
+	struct cli_credentials *cred,
+	struct loadparm_context *lp_ctx) =
+	cli_credentials_set_machine_account;
+
+/* PRIVATE */
+bool samba_cmdline_set_talloc_ctx(TALLOC_CTX *mem_ctx)
+{
+	if (cmdline_mem_ctx != NULL) {
+		return false;
+	}
+
+	cmdline_mem_ctx = mem_ctx;
+	return true;
+}
+
+TALLOC_CTX *samba_cmdline_get_talloc_ctx(void)
+{
+	return cmdline_mem_ctx;
+}
+
+static void _samba_cmdline_talloc_log(const char *message)
+{
+	D_ERR("%s", message);
+}
+
+bool samba_cmdline_init_common(TALLOC_CTX *mem_ctx)
+{
+	bool ok;
+
+	ok = samba_cmdline_set_talloc_ctx(mem_ctx);
+	if (!ok) {
+		return false;
+	}
+
+	cmdline_daemon_cfg = (struct samba_cmdline_daemon_cfg) {
+		.fork = true,
+	};
+
+	fault_setup();
+
+	/*
+	 * Log to stderr by default.
+	 * This can be changed to stdout using the option: --debug-stdout
+	 */
+	setup_logging(getprogname(), DEBUG_DEFAULT_STDERR);
+
+	talloc_set_log_fn(_samba_cmdline_talloc_log);
+	talloc_set_abort_fn(smb_panic);
+
+	return true;
+}
+
+bool samba_cmdline_set_load_config_fn(samba_cmdline_load_config fn)
+{
+	cmdline_load_config_fn = fn;
+	return true;
+}
+
+/* PUBLIC */
+bool samba_cmdline_set_lp_ctx(struct loadparm_context *lp_ctx)
+{
+	if (lp_ctx == NULL) {
+		return false;
+	}
+	cmdline_lp_ctx = lp_ctx;
+
+	return true;
+}
+
+struct loadparm_context *samba_cmdline_get_lp_ctx(void)
+{
+	return cmdline_lp_ctx;
+}
+
+bool samba_cmdline_set_creds(struct cli_credentials *creds)
+{
+	if (creds == NULL) {
+		return false;
+	}
+
+	TALLOC_FREE(cmdline_creds);
+	cmdline_creds = creds;
+
+	return true;
+}
+
+struct cli_credentials *samba_cmdline_get_creds(void)
+{
+	return cmdline_creds;
+}
+
+struct samba_cmdline_daemon_cfg *samba_cmdline_get_daemon_cfg(void)
+{
+	return &cmdline_daemon_cfg;
+}
+
+void samba_cmdline_set_machine_account_fn(
+	NTSTATUS (*fn) (struct cli_credentials *cred,
+			struct loadparm_context *lp_ctx))
+{
+	cli_credentials_set_machine_account_fn = fn;
+}
+
+void samba_cmdline_burn(int argc, char *argv[])
+{
+	bool found = false;
+	bool is_user = false;
+	char *p = NULL;
+	int i;
+	size_t ulen = 0;
+
+	for (i = 0; i < argc; i++) {
+		p = argv[i];
+		if (p == NULL) {
+			return;
+		}
+
+		if (strncmp(p, "-U", 2) == 0) {
+			ulen = 2;
+			found = true;
+			is_user = true;
+		} else if (strncmp(p, "--user", 6) == 0) {
+			ulen = 6;
+			found = true;
+			is_user = true;
+		} else if (strncmp(p, "--password", 10) == 0) {
+			ulen = 10;
+			found = true;
+		}
+
+		if (found) {
+			char *q = NULL;
+
+			if (strlen(p) == ulen) {
+				continue;
+			}
+
+			if (is_user) {
+				q = strchr_m(p, '%');
+				if (q != NULL) {
+					p = q;
+				}
+			} else {
+				p += ulen;
+			}
+
+			memset_s(p, strlen(p), '\0', strlen(p));
+			found = false;
+			is_user = false;
+		}
+	}
+}
+
+static bool is_popt_table_end(const struct poptOption *o)
+{
+	if (o->longName == NULL &&
+	    o->shortName == 0 &&
+	    o->argInfo == 0 &&
+	    o->arg == NULL &&
+	    o->val == 0 &&
+	    o->descrip == NULL &&
+	    o->argDescrip == NULL) {
+		return true;
+	}
+
+	return false;
+}
+
+static void find_duplicates(const struct poptOption *needle,
+			    const struct poptOption *haystack,
+			    size_t *count)
+{
+	for(;
+	    !is_popt_table_end(haystack);
+	    haystack++) {
+		switch (haystack->argInfo) {
+		case POPT_ARG_INCLUDE_TABLE:
+			if (haystack->arg != NULL) {
+				find_duplicates(needle, haystack->arg, count);
+			}
+
+			break;
+		default:
+			if (needle->shortName != 0 &&
+			    needle->shortName == haystack->shortName) {
+				(*count)++;
+				break;
+			}
+
+			if (needle->longName != NULL &&
+			    haystack->longName != NULL &&
+			    strequal(needle->longName, haystack->longName)) {
+				(*count)++;
+				break;
+			}
+			break;
+		}
+
+		if (*count > 1) {
+			return;
+		}
+	}
+}
+
+static bool cmdline_sanity_checker(const struct poptOption *current_opts,
+			     const struct poptOption *full_opts)
+{
+	const struct poptOption *o = current_opts;
+
+	for(;
+	    !is_popt_table_end(o);
+	    o++) {
+		bool ok;
+
+		switch (o->argInfo) {
+		case POPT_ARG_INCLUDE_TABLE:
+			if (o->arg != NULL) {
+				ok = cmdline_sanity_checker(o->arg, full_opts);
+				if (!ok) {
+					return false;
+				}
+			}
+
+			break;
+		default:
+			if (o->longName != NULL || o->shortName != 0) {
+				size_t count = 0;
+
+				find_duplicates(o, full_opts, &count);
+				if (count > 1) {
+					DBG_ERR("Duplicate option '--%s|-%c' "
+						"detected!\n",
+						o->longName,
+						o->shortName != 0 ?
+							o->shortName :
+							'-');
+					return false;
+				}
+			}
+
+			break;
+		}
+	}
+
+	return true;
+}
+
+bool samba_cmdline_sanity_check(const struct poptOption *opts)
+{
+	return cmdline_sanity_checker(opts, opts);
+}
+
+poptContext samba_popt_get_context(const char * name,
+				   int argc, const char ** argv,
+				   const struct poptOption * options,
+				   unsigned int flags)
+{
+#ifdef DEVELOPER
+	bool ok;
+
+	ok = samba_cmdline_sanity_check(options);
+	if (!ok) {
+		return NULL;
+	}
+#endif
+	return poptGetContext(name, argc, argv, options, flags);
+}
+
+/**********************************************************
+ * COMMON SAMBA POPT
+ **********************************************************/
+
+static bool log_to_file;
+
+static bool set_logfile(TALLOC_CTX *mem_ctx,
+			struct loadparm_context *lp_ctx,
+			const char *log_basename,
+			const char *process_name,
+			bool from_cmdline)
+{
+	bool ok = false;
+	char *new_logfile = talloc_asprintf(mem_ctx,
+					    "%s/log.%s",
+					    log_basename,
+					    process_name);
+	if (new_logfile == NULL) {
+		return false;
+	}
+
+	if (from_cmdline) {
+		ok = lpcfg_set_cmdline(lp_ctx,
+				       "log file",
+				       new_logfile);
+	} else {
+		ok = lpcfg_do_global_parameter(lp_ctx,
+					       "log file",
+					       new_logfile);
+	}
+	if (!ok) {
+		fprintf(stderr,
+			"Failed to set log to %s\n",
+			new_logfile);
+		TALLOC_FREE(new_logfile);
+		return false;
+	}
+	debug_set_logfile(new_logfile);
+	TALLOC_FREE(new_logfile);
+
+	return true;
+}
+
+static void popt_samba_callback(poptContext popt_ctx,
+				enum poptCallbackReason reason,
+				const struct poptOption *opt,
+				const char *arg, const void *data)
+{
+	TALLOC_CTX *mem_ctx = samba_cmdline_get_talloc_ctx();
+	struct loadparm_context *lp_ctx = samba_cmdline_get_lp_ctx();
+	const char *pname = NULL;
+	bool ok;
+
+	/* Find out basename of current program */
+	pname = getprogname();
+
+	if (reason == POPT_CALLBACK_REASON_PRE) {
+		if (lp_ctx == NULL) {
+			fprintf(stderr,
+				"Command line parsing not initialized!\n");
+			exit(1);
+		}
+		ok = set_logfile(mem_ctx,
+				 lp_ctx,
+				 get_dyn_LOGFILEBASE(),
+				 pname,
+				 false);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set log file for %s\n",
+				pname);
+			exit(1);
+		}
+		return;
+	}
+
+	if (reason == POPT_CALLBACK_REASON_POST) {
+		ok = cmdline_load_config_fn();
+		if (!ok) {
+			fprintf(stderr,
+				"%s - Failed to load config file!\n",
+				getprogname());
+			exit(1);
+		}
+
+		if (log_to_file) {
+			const struct loadparm_substitution *lp_sub =
+				lpcfg_noop_substitution();
+			char *logfile = NULL;
+
+			logfile = lpcfg_logfile(lp_ctx, lp_sub, mem_ctx);
+			if (logfile == NULL) {
+				fprintf(stderr,
+					"Failed to setup logging to file!");
+					exit(1);
+			}
+			debug_set_logfile(logfile);
+			setup_logging(logfile, DEBUG_FILE);
+			TALLOC_FREE(logfile);
+		}
+
+		return;
+	}
+
+	switch(opt->val) {
+	case OPT_LEAK_REPORT:
+		talloc_enable_leak_report();
+		break;
+	case OPT_LEAK_REPORT_FULL:
+		talloc_enable_leak_report_full();
+		break;
+	case OPT_OPTION:
+		if (arg != NULL) {
+			ok = lpcfg_set_option(lp_ctx, arg);
+			if (!ok) {
+				fprintf(stderr, "Error setting option '%s'\n", arg);
+				exit(1);
+			}
+		}
+		break;
+	case 'd':
+		if (arg != NULL) {
+			ok = lpcfg_set_cmdline(lp_ctx, "log level", arg);
+			if (!ok) {
+				fprintf(stderr,
+					"Failed to set debug level to: %s\n",
+					arg);
+				exit(1);
+			}
+		}
+		break;
+	case OPT_DEBUG_STDOUT:
+		setup_logging(pname, DEBUG_STDOUT);
+		break;
+	case OPT_CONFIGFILE:
+		if (arg != NULL) {
+			set_dyn_CONFIGFILE(arg);
+		}
+		break;
+	case 'l':
+		if (arg != NULL) {
+			ok = set_logfile(mem_ctx, lp_ctx, arg, pname, true);
+			if (!ok) {
+				fprintf(stderr,
+					"Failed to set log file for %s\n",
+					arg);
+				exit(1);
+			}
+			log_to_file = true;
+
+			set_dyn_LOGFILEBASE(arg);
+		}
+		break;
+	}
+}
+
+static struct poptOption popt_common_debug[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST,
+		.arg        = (void *)popt_samba_callback,
+	},
+	{
+		.longName   = "debuglevel",
+		.shortName  = 'd',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'd',
+		.descrip    = "Set debug level",
+		.argDescrip = "DEBUGLEVEL",
+	},
+	{
+		.longName   = "debug-stdout",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_DEBUG_STDOUT,
+		.descrip    = "Send debug output to standard output",
+	},
+	POPT_TABLEEND
+};
+
+static struct poptOption popt_common_option[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST,
+		.arg        = (void *)popt_samba_callback,
+	},
+	{
+		.longName   = "option",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_OPTION,
+		.descrip    = "Set smb.conf option from command line",
+		.argDescrip = "name=value",
+	},
+	POPT_TABLEEND
+};
+
+static struct poptOption popt_common_config[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST,
+		.arg        = (void *)popt_samba_callback,
+	},
+	{
+		.longName   = "configfile",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_CONFIGFILE,
+		.descrip    = "Use alternative configuration file",
+		.argDescrip = "CONFIGFILE",
+	},
+	POPT_TABLEEND
+};
+
+static struct poptOption popt_common_samba[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST,
+		.arg        = (void *)popt_samba_callback,
+	},
+	{
+		.longName   = "debuglevel",
+		.shortName  = 'd',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'd',
+		.descrip    = "Set debug level",
+		.argDescrip = "DEBUGLEVEL",
+	},
+	{
+		.longName   = "debug-stdout",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_DEBUG_STDOUT,
+		.descrip    = "Send debug output to standard output",
+	},
+	{
+		.longName   = "configfile",
+		.shortName  = 's',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_CONFIGFILE,
+		.descrip    = "Use alternative configuration file",
+		.argDescrip = "CONFIGFILE",
+	},
+	{
+		.longName   = "option",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_OPTION,
+		.descrip    = "Set smb.conf option from command line",
+		.argDescrip = "name=value",
+	},
+	{
+		.longName   = "log-basename",
+		.shortName  = 'l',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'l',
+		.descrip    = "Basename for log/debug files",
+		.argDescrip = "LOGFILEBASE",
+	},
+	{
+		.longName   = "leak-report",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_LEAK_REPORT,
+		.descrip    = "enable talloc leak reporting on exit",
+	},
+	{
+		.longName   = "leak-report-full",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_LEAK_REPORT_FULL,
+		.descrip    = "enable full talloc leak reporting on exit",
+	},
+	POPT_TABLEEND
+};
+
+static struct poptOption popt_common_samba_ldb[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST,
+		.arg        = (void *)popt_samba_callback,
+	},
+	{
+		.longName   = "debuglevel",
+		.shortName  = 'd',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'd',
+		.descrip    = "Set debug level",
+		.argDescrip = "DEBUGLEVEL",
+	},
+	{
+		.longName   = "debug-stdout",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_DEBUG_STDOUT,
+		.descrip    = "Send debug output to standard output",
+	},
+	{
+		.longName   = "configfile",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_CONFIGFILE,
+		.descrip    = "Use alternative configuration file",
+		.argDescrip = "CONFIGFILE",
+	},
+	{
+		.longName   = "option",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_OPTION,
+		.descrip    = "Set smb.conf option from command line",
+		.argDescrip = "name=value",
+	},
+	{
+		.longName   = "log-basename",
+		.shortName  = 'l',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'l',
+		.descrip    = "Basename for log/debug files",
+		.argDescrip = "LOGFILEBASE",
+	},
+	{
+		.longName   = "leak-report",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_LEAK_REPORT,
+		.descrip    = "enable talloc leak reporting on exit",
+	},
+	{
+		.longName   = "leak-report-full",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_LEAK_REPORT_FULL,
+		.descrip    = "enable full talloc leak reporting on exit",
+	},
+	POPT_TABLEEND
+};
+
+/**********************************************************
+ * CONNECTION POPT
+ **********************************************************/
+
+static void popt_connection_callback(poptContext popt_ctx,
+				     enum poptCallbackReason reason,
+				     const struct poptOption *opt,
+				     const char *arg,
+				     const void *data)
+{
+	struct loadparm_context *lp_ctx = cmdline_lp_ctx;
+
+	if (reason == POPT_CALLBACK_REASON_PRE) {
+		if (lp_ctx == NULL) {
+			fprintf(stderr,
+				"Command line parsing not initialized!\n");
+			exit(1);
+		}
+		return;
+	}
+
+	switch(opt->val) {
+	case 'O':
+		if (arg != NULL) {
+			lpcfg_set_cmdline(lp_ctx, "socket options", arg);
+		}
+		break;
+	case 'R':
+		if (arg != NULL) {
+			lpcfg_set_cmdline(lp_ctx, "name resolve order", arg);
+		}
+		break;
+	case 'm':
+		if (arg != NULL) {
+			lpcfg_set_cmdline(lp_ctx, "client max protocol", arg);
+		}
+		break;
+	case OPT_NETBIOS_SCOPE:
+		if (arg != NULL) {
+			lpcfg_set_cmdline(lp_ctx, "netbios scope", arg);
+		}
+		break;
+	case 'n':
+		if (arg != NULL) {
+			lpcfg_set_cmdline(lp_ctx, "netbios name", arg);
+		}
+		break;
+	case 'W':
+		if (arg != NULL) {
+			lpcfg_set_cmdline(lp_ctx, "workgroup", arg);
+		}
+		break;
+	case 'r':
+		if (arg != NULL) {
+			lpcfg_set_cmdline(lp_ctx, "realm", arg);
+		}
+		break;
+	}
+}
+
+static struct poptOption popt_common_connection[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK|POPT_CBFLAG_PRE,
+		.arg        = (void *)popt_connection_callback,
+	},
+	{
+		.longName   = "name-resolve",
+		.shortName  = 'R',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'R',
+		.descrip    = "Use these name resolution services only",
+		.argDescrip = "NAME-RESOLVE-ORDER",
+	},
+	{
+		.longName   = "socket-options",
+		.shortName  = 'O',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'O',
+		.descrip    = "socket options to use",
+		.argDescrip = "SOCKETOPTIONS",
+	},
+	{
+		.longName   = "max-protocol",
+		.shortName  = 'm',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'm',
+		.descrip    = "Set max protocol level",
+		.argDescrip = "MAXPROTOCOL",
+	},
+	{
+		.longName   = "netbiosname",
+		.shortName  = 'n',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'n',
+		.descrip    = "Primary netbios name",
+		.argDescrip = "NETBIOSNAME",
+	},
+	{
+		.longName   = "netbios-scope",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_NETBIOS_SCOPE,
+		.descrip    = "Use this Netbios scope",
+		.argDescrip = "SCOPE",
+	},
+	{
+		.longName   = "workgroup",
+		.shortName  = 'W',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'W',
+		.descrip    = "Set the workgroup name",
+		.argDescrip = "WORKGROUP",
+	},
+	{
+		.longName   = "realm",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'r',
+		.descrip    = "Set the realm name",
+		.argDescrip = "REALM",
+	},
+	POPT_TABLEEND
+};
+
+/**********************************************************
+ * CREDENTIALS POPT
+ **********************************************************/
+
+static bool skip_password_callback;
+static bool machine_account_pending;
+
+static void popt_common_credentials_callback(poptContext popt_ctx,
+					     enum poptCallbackReason reason,
+					     const struct poptOption *opt,
+					     const char *arg,
+					     const void *data)
+{
+	struct loadparm_context *lp_ctx = samba_cmdline_get_lp_ctx();
+	struct cli_credentials *creds = samba_cmdline_get_creds();
+	bool ok;
+
+	if (reason == POPT_CALLBACK_REASON_PRE) {
+		if (creds == NULL) {
+			fprintf(stderr,
+				"Command line parsing not initialized!\n");
+			exit(1);
+		}
+		return;
+	}
+
+	if (reason == POPT_CALLBACK_REASON_POST) {
+		const char *username = NULL;
+		enum credentials_obtained username_obtained =
+			CRED_UNINITIALISED;
+		enum credentials_obtained password_obtained =
+			CRED_UNINITIALISED;
+
+		/*
+		 * This calls cli_credentials_set_conf() to get the defaults
+		 * form smb.conf and set the winbind separator.
+		 *
+		 * Just warn that we can't read the smb.conf. The might not be
+		 * one available or we want to ignore it.
+		 */
+		ok = cli_credentials_guess(creds, lp_ctx);
+		if (!ok) {
+			fprintf(stderr,
+				"Unable to read defaults from smb.conf\n");
+		}
+
+		(void)cli_credentials_get_password_and_obtained(creds,
+								&password_obtained);
+		if (!skip_password_callback &&
+		    password_obtained < CRED_CALLBACK) {
+			ok = cli_credentials_set_cmdline_callbacks(creds);
+			if (!ok) {
+				fprintf(stderr,
+					"Failed to set cmdline password "
+					"callback\n");
+				exit(1);
+			}
+		}
+
+		if (machine_account_pending) {
+			NTSTATUS status;
+
+			status = cli_credentials_set_machine_account_fn(
+				creds, lp_ctx);
+			if (!NT_STATUS_IS_OK(status)) {
+				fprintf(stderr,
+					"Failed to set machine account: %s\n",
+					nt_errstr(status));
+				exit(1);
+			}
+		}
+
+		/*
+		 * When we set the username during the handling of the options
+		 * passed to the binary we haven't loaded the config yet. This
+		 * means that we didn't take the 'winbind separator' into
+		 * account.
+		 *
+		 * The username might contain the domain name and thus it
+		 * hasn't been correctly parsed yet. If we have a username we
+		 * need to set it again to run the string parser for the
+		 * username correctly.
+		 */
+		username =
+			cli_credentials_get_username_and_obtained(
+					creds, &username_obtained);
+		if (username_obtained == CRED_SPECIFIED &&
+		    username != NULL && username[0] != '\0') {
+			cli_credentials_parse_string(creds,
+						     username,
+						     CRED_SPECIFIED);
+		}
+
+		return;
+	}
+
+	switch(opt->val) {
+	case 'U':
+		if (arg != NULL) {
+			cli_credentials_parse_string(creds,
+						     arg,
+						     CRED_SPECIFIED);
+		}
+		break;
+	case OPT_PASSWORD:
+		if (arg != NULL) {
+			ok = cli_credentials_set_password(creds,
+							  arg,
+							  CRED_SPECIFIED);
+			if (!ok) {
+				fprintf(stderr,
+					"Failed to set password!\n");
+				exit(1);
+			}
+
+			skip_password_callback = true;
+		}
+		break;
+	case OPT_NT_HASH:
+		cli_credentials_set_password_will_be_nt_hash(creds, true);
+		break;
+	case 'A':
+		if (arg != NULL) {
+			ok = cli_credentials_parse_file(creds,
+							arg,
+							CRED_SPECIFIED);
+			if (!ok) {
+				fprintf(stderr,
+					"Failed to set parse authentication file!\n");
+				exit(1);
+			}
+			skip_password_callback = true;
+		}
+		break;
+	case 'N':
+		ok = cli_credentials_set_password(creds,
+						  NULL,
+						  CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+			        "Failed to set password!\n");
+			exit(1);
+		}
+		skip_password_callback = true;
+		break;
+	case 'P':
+		/*
+		 * Later, after this is all over, get the machine account
+		 * details from the secrets.(l|t)db.
+		 */
+		machine_account_pending = true;
+		break;
+	case OPT_SIMPLE_BIND_DN:
+		if (arg != NULL) {
+			ok = cli_credentials_set_bind_dn(creds, arg);
+			if (!ok) {
+				fprintf(stderr,
+					"Failed to set bind DN!\n");
+				exit(1);
+			}
+		}
+		break;
+	case OPT_USE_KERBEROS: {
+		int32_t use_kerberos = INT_MIN;
+		if (arg == NULL) {
+			fprintf(stderr,
+				"Failed to parse "
+				"--use-kerberos=desired|required|off: "
+				"Missing argument\n");
+			exit(1);
+		}
+
+		use_kerberos = lpcfg_parse_enum_vals("client use kerberos",
+						     arg);
+		if (use_kerberos == INT_MIN) {
+			fprintf(stderr,
+				"Failed to parse "
+				"--use-kerberos=desired|required|off: "
+				"Invalid argument\n");
+			exit(1);
+		}
+
+		ok = cli_credentials_set_kerberos_state(creds,
+							use_kerberos,
+							CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set Kerberos state to %s!\n", arg);
+			exit(1);
+		}
+		break;
+	}
+	case OPT_USE_KERBEROS_CCACHE: {
+		const char *error_string = NULL;
+		int rc;
+
+		if (arg == NULL) {
+			fprintf(stderr,
+				"Failed to parse --use-krb5-ccache=CCACHE: "
+				"Missing argument\n");
+			exit(1);
+		}
+
+		ok = cli_credentials_set_kerberos_state(creds,
+							CRED_USE_KERBEROS_REQUIRED,
+							CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set Kerberos state to %s!\n", arg);
+			exit(1);
+		}
+
+		rc = cli_credentials_set_ccache(creds,
+						lp_ctx,
+						arg,
+						CRED_SPECIFIED,
+						&error_string);
+		if (rc != 0) {
+			fprintf(stderr,
+				"Error reading krb5 credentials cache: '%s'"
+				" - %s\n",
+				arg,
+				error_string);
+			exit(1);
+		}
+
+		skip_password_callback = true;
+		break;
+	}
+	case OPT_USE_WINBIND_CCACHE:
+	{
+		uint32_t gensec_features;
+
+		gensec_features = cli_credentials_get_gensec_features(creds);
+		gensec_features |= GENSEC_FEATURE_NTLM_CCACHE;
+
+		ok = cli_credentials_set_gensec_features(creds,
+							 gensec_features,
+							 CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set gensec feature!\n");
+			exit(1);
+		}
+
+		skip_password_callback = true;
+		break;
+	}
+	case OPT_CLIENT_PROTECTION: {
+		uint32_t gensec_features;
+		enum smb_signing_setting signing_state =
+			SMB_SIGNING_OFF;
+		enum smb_encryption_setting encryption_state =
+			SMB_ENCRYPTION_OFF;
+
+		if (arg == NULL) {
+			fprintf(stderr,
+				"Failed to parse "
+				"--client-protection=sign|encrypt|off: "
+				"Missing argument\n");
+			exit(1);
+		}
+
+		gensec_features =
+			cli_credentials_get_gensec_features(
+					creds);
+
+		if (strequal(arg, "off")) {
+			gensec_features &=
+				~(GENSEC_FEATURE_SIGN|GENSEC_FEATURE_SEAL);
+
+			signing_state = SMB_SIGNING_OFF;
+			encryption_state = SMB_ENCRYPTION_OFF;
+		} else if (strequal(arg, "sign")) {
+			gensec_features |= GENSEC_FEATURE_SIGN;
+
+			signing_state = SMB_SIGNING_REQUIRED;
+			encryption_state = SMB_ENCRYPTION_OFF;
+		} else if (strequal(arg, "encrypt")) {
+			gensec_features |= GENSEC_FEATURE_SEAL;
+
+			signing_state = SMB_SIGNING_REQUIRED;
+			encryption_state = SMB_ENCRYPTION_REQUIRED;
+		} else {
+			fprintf(stderr,
+				"Failed to parse --client-protection\n");
+			exit(1);
+		}
+
+		ok = cli_credentials_set_gensec_features(creds,
+								gensec_features,
+								CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set gensec feature!\n");
+			exit(1);
+		}
+
+		ok = cli_credentials_set_smb_signing(creds,
+							signing_state,
+							CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set smb signing!\n");
+			exit(1);
+		}
+
+		ok = cli_credentials_set_smb_encryption(creds,
+							encryption_state,
+							CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set smb encryption!\n");
+			exit(1);
+		}
+		break;
+	}
+	} /* switch */
+}
+
+static struct poptOption popt_common_credentials[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST,
+		.arg        = (void *)popt_common_credentials_callback,
+	},
+	{
+		.longName   = "user",
+		.shortName  = 'U',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'U',
+		.descrip    = "Set the network username",
+		.argDescrip = "[DOMAIN/]USERNAME[%PASSWORD]",
+	},
+	{
+		.longName   = "no-pass",
+		.shortName  = 'N',
+		.argInfo    = POPT_ARG_NONE,
+		.val        = 'N',
+		.descrip    = "Don't ask for a password",
+	},
+	{
+		.longName   = "password",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_PASSWORD,
+		.descrip    = "Password",
+	},
+	{
+		.longName   = "pw-nt-hash",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_NT_HASH,
+		.descrip    = "The supplied password is the NT hash",
+	},
+	{
+		.longName   = "authentication-file",
+		.shortName  = 'A',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'A',
+		.descrip    = "Get the credentials from a file",
+		.argDescrip = "FILE",
+	},
+	{
+		.longName   = "machine-pass",
+		.shortName  = 'P',
+		.argInfo    = POPT_ARG_NONE,
+		.val        = 'P',
+		.descrip    = "Use stored machine account password",
+	},
+	{
+		.longName   = "simple-bind-dn",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_SIMPLE_BIND_DN,
+		.descrip    = "DN to use for a simple bind",
+		.argDescrip = "DN",
+	},
+	{
+		.longName   = "use-kerberos",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_USE_KERBEROS,
+		.descrip    = "Use Kerberos authentication",
+		.argDescrip = "desired|required|off",
+	},
+	{
+		.longName   = "use-krb5-ccache",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_USE_KERBEROS_CCACHE,
+		.descrip    = "Credentials cache location for Kerberos",
+		.argDescrip = "CCACHE",
+	},
+	{
+		.longName   = "use-winbind-ccache",
+		.argInfo    = POPT_ARG_NONE,
+		.val        = OPT_USE_WINBIND_CCACHE,
+		.descrip    = "Use the winbind ccache for authentication",
+	},
+	{
+		.longName   = "client-protection",
+		.argInfo    = POPT_ARG_STRING,
+		.val        = OPT_CLIENT_PROTECTION,
+		.descrip    = "Configure used protection for client connections",
+		.argDescrip = "sign|encrypt|off",
+	},
+	POPT_TABLEEND
+};
+
+/**********************************************************
+ * VERSION POPT
+ **********************************************************/
+
+static void popt_version_callback(poptContext ctx,
+				  enum poptCallbackReason reason,
+				  const struct poptOption *opt,
+				  const char *arg,
+				  const void *data)
+{
+	switch(opt->val) {
+	case 'V':
+		printf("Version %s\n", SAMBA_VERSION_STRING);
+		exit(0);
+	}
+}
+
+static struct poptOption popt_common_version[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK,
+		.arg        = (void *)popt_version_callback,
+	},
+	{
+		.longName   = "version",
+		.shortName  = 'V',
+		.argInfo    = POPT_ARG_NONE,
+		.val        = 'V',
+		.descrip    = "Print version",
+	},
+	POPT_TABLEEND
+};
+
+/**********************************************************
+ * DAEMON POPT
+ **********************************************************/
+
+static void popt_daemon_callback(poptContext ctx,
+				 enum poptCallbackReason reason,
+				 const struct poptOption *opt,
+				 const char *arg,
+				 const void *data)
+{
+	switch(opt->val) {
+	case OPT_DAEMON:
+		cmdline_daemon_cfg.daemon = true;
+		break;
+	case OPT_INTERACTIVE:
+		cmdline_daemon_cfg.interactive = true;
+		cmdline_daemon_cfg.fork = false;
+		break;
+	case OPT_FORK:
+		cmdline_daemon_cfg.fork = false;
+		break;
+	case OPT_NO_PROCESS_GROUP:
+		cmdline_daemon_cfg.no_process_group = true;
+		break;
+	}
+}
+
+static struct poptOption popt_common_daemon[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK,
+		.arg        = (void *)popt_daemon_callback
+	},
+	{
+		.longName   = "daemon",
+		.shortName  = 'D',
+		.argInfo    = POPT_ARG_NONE,
+		.arg        = NULL,
+		.val        = OPT_DAEMON,
+		.descrip    = "Become a daemon (default)" ,
+	},
+	{
+		.longName   = "interactive",
+		.shortName  = 'i',
+		.argInfo    = POPT_ARG_NONE,
+		.arg        = NULL,
+		.val        = OPT_INTERACTIVE,
+		.descrip    = "Run interactive (not a daemon) and log to stdout",
+	},
+	{
+		.longName   = "foreground",
+		.shortName  = 'F',
+		.argInfo    = POPT_ARG_NONE,
+		.arg        = NULL,
+		.val        = OPT_FORK,
+		.descrip    = "Run daemon in foreground (for daemontools, etc.)",
+	},
+	{
+		.longName   = "no-process-group",
+		.shortName  = '\0',
+		.argInfo    = POPT_ARG_NONE,
+		.arg        = NULL,
+		.val        = OPT_NO_PROCESS_GROUP,
+		.descrip    = "Don't create a new process group" ,
+	},
+	POPT_TABLEEND
+};
+
+/**********************************************************
+ * LEGACY S3 POPT
+ **********************************************************/
+
+static void popt_legacy_s3_callback(poptContext ctx,
+				    enum poptCallbackReason reason,
+				    const struct poptOption *opt,
+				    const char *arg,
+				    const void *data)
+{
+	struct cli_credentials *creds = samba_cmdline_get_creds();
+	bool ok;
+
+	switch(opt->val) {
+	case 'k':
+		fprintf(stderr,
+			"WARNING: The option -k|--kerberos is deprecated!\n");
+
+		ok = cli_credentials_set_kerberos_state(creds,
+							CRED_USE_KERBEROS_REQUIRED,
+							CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set Kerberos state to %s!\n", arg);
+			exit(1);
+		}
+
+		skip_password_callback = true;
+		break;
+	}
+}
+
+/* We allow '-k yes' too. */
+static struct poptOption popt_legacy_s3[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK,
+		.arg        = (void *)popt_legacy_s3_callback,
+	},
+	{
+		.longName   = "kerberos",
+		.shortName  = 'k',
+		.argInfo    = POPT_ARG_NONE,
+		.val        = 'k',
+		.descrip    = "DEPRECATED: Migrate to --use-kerberos",
+	},
+	POPT_TABLEEND
+};
+
+/**********************************************************
+ * LEGACY S4 POPT
+ **********************************************************/
+
+static void popt_legacy_s4_callback(poptContext ctx,
+				    enum poptCallbackReason reason,
+				    const struct poptOption *opt,
+				    const char *arg,
+				    const void *data)
+{
+	struct cli_credentials *creds = samba_cmdline_get_creds();
+	bool ok;
+
+	switch(opt->val) {
+	case 'k': {
+		enum credentials_use_kerberos use_kerberos =
+			CRED_USE_KERBEROS_REQUIRED;
+
+		fprintf(stderr,
+			"WARNING: The option -k|--kerberos is deprecated!\n");
+
+		if (arg != NULL) {
+			if (strcasecmp_m(arg, "yes") == 0) {
+				use_kerberos = CRED_USE_KERBEROS_REQUIRED;
+			} else if (strcasecmp_m(arg, "no") == 0) {
+				use_kerberos = CRED_USE_KERBEROS_DISABLED;
+			} else {
+				fprintf(stderr,
+					"Error parsing -k %s. Should be "
+					"-k [yes|no]\n",
+					arg);
+				exit(1);
+			}
+		}
+
+		ok = cli_credentials_set_kerberos_state(creds,
+							use_kerberos,
+							CRED_SPECIFIED);
+		if (!ok) {
+			fprintf(stderr,
+				"Failed to set Kerberos state to %s!\n", arg);
+			exit(1);
+		}
+
+		break;
+	}
+	}
+}
+
+static struct poptOption popt_legacy_s4[] = {
+	{
+		.argInfo    = POPT_ARG_CALLBACK,
+		.arg        = (void *)popt_legacy_s4_callback,
+	},
+	{
+		.longName   = "kerberos",
+		.shortName  = 'k',
+		.argInfo    = POPT_ARG_STRING,
+		.val        = 'k',
+		.descrip    = "DEPRECATED: Migrate to --use-kerberos",
+	},
+	POPT_TABLEEND
+};
+
+struct poptOption *samba_cmdline_get_popt(enum smb_cmdline_popt_options opt)
+{
+	switch (opt) {
+	case SAMBA_CMDLINE_POPT_OPT_DEBUG_ONLY:
+		return popt_common_debug;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_OPTION_ONLY:
+		return popt_common_option;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_CONFIG_ONLY:
+		return popt_common_config;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_SAMBA:
+		return popt_common_samba;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_CONNECTION:
+		return popt_common_connection;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_CREDENTIALS:
+		return popt_common_credentials;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_VERSION:
+		return popt_common_version;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_DAEMON:
+		return popt_common_daemon;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_SAMBA_LDB:
+		return popt_common_samba_ldb;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_LEGACY_S3:
+		return popt_legacy_s3;
+		break;
+	case SAMBA_CMDLINE_POPT_OPT_LEGACY_S4:
+		return popt_legacy_s4;
+		break;
+	}
+
+	/* Never reached */
+	return NULL;
+}