r7525: Unify lp_load(), load_interfaces and logging setup into popt().

There is now a new --debug-stderr option to enable debug to STDERR.

popt isn't perfect, but the callbacks are used in all the main Samba
binaries, and should be used in the rest.  This avoids duplicated
code, and ensures every binary is setup correctly.

This also ensures the setup happens early enough to have -s function,
and have a correct impact on the credentials code.  (Fixing a bug that
frustrated tridge earlier today).

The only 'subtle' aspect of all this is that I'm pretty sure that the
SAMBA_COMMON popt code must be above the CREDENTIALS code, in the
popt tables.

Andrew Bartlett
(This used to be commit 50f3c2b3a22971f40e0d3a88127b5120bfc47591)

6 files changed, 43 insertions, 42 deletions

diff --git a/source4/lib/cmdline/popt_common.c b/source4/lib/cmdline/popt_common.c
index 94b72c520d..fec85281ef 100644
--- a/source4/lib/cmdline/popt_common.c
+++ b/source4/lib/cmdline/popt_common.c
@@ -38,7 +38,7 @@
  *		-i,--scope
  */
 
-enum {OPT_OPTION=1,OPT_LEAK_REPORT,OPT_LEAK_REPORT_FULL};
+enum {OPT_OPTION=1,OPT_LEAK_REPORT,OPT_LEAK_REPORT_FULL, OPT_DEBUG_STDERR};
 
 struct cli_credentials *cmdline_credentials = NULL;
 
@@ -49,6 +49,14 @@ static void popt_common_callback(poptContext con,
 {
 	const char *pname;
 	
+	if (reason == POPT_CALLBACK_REASON_POST) {
+		/* Hook any 'every Samba program must do this, after
+		 * the smb.conf is setup' functions here */
+		lp_load(dyn_CONFIGFILE,True,False,False);
+		load_interfaces();
+		return;
+	}
+
 	/* Find out basename of current program */
 	pname = strrchr_m(poptGetInvocationName(con),'/');
 
@@ -58,9 +66,7 @@ static void popt_common_callback(poptContext con,
 		pname++;
 
 	if (reason == POPT_CALLBACK_REASON_PRE) {
-		char *logfile = talloc_asprintf(NULL, "%s/log.%s", dyn_LOGFILEBASE, pname);
-		lp_set_cmdline("log file", logfile);
-		talloc_free(logfile);
+		setup_logging(pname, DEBUG_STDOUT);
 		return;
 	}
 
@@ -69,6 +75,10 @@ static void popt_common_callback(poptContext con,
 		lp_set_cmdline("log level", arg);
 		break;
 
+	case OPT_DEBUG_STDERR:
+		setup_logging(pname, DEBUG_STDERR);
+		break;
+
 	case 'V':
 		printf( "Version %s\n", SAMBA_VERSION_STRING );
 		exit(0);
@@ -128,6 +138,7 @@ static void popt_common_callback(poptContext con,
 	case OPT_LEAK_REPORT_FULL:
 		talloc_enable_leak_report_full();
 		break;
+
 	}
 }
 
@@ -143,8 +154,9 @@ struct poptOption popt_common_connection[] = {
 };
 
 struct poptOption popt_common_samba[] = {
-	{ NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, popt_common_callback },
+	{ NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST, popt_common_callback },
 	{ "debuglevel",   'd', POPT_ARG_STRING, NULL, 'd', "Set debug level", "DEBUGLEVEL" },
+	{ "debug-stderr", 0, POPT_ARG_NONE, NULL, OPT_DEBUG_STDERR, "Send debug output to STDERR", NULL },
 	{ "configfile",   's', POPT_ARG_STRING, NULL, 's', "Use alternative configuration file", "CONFIGFILE" },
 	{ "option",         0, POPT_ARG_STRING, NULL, OPT_OPTION, "Set smb.conf option from command line", "name=value" },
 	{ "log-basename", 'l', POPT_ARG_STRING, NULL, 'l', "Basename for log/debug files", "LOGFILEBASE" },
diff --git a/source4/lib/debug.c b/source4/lib/debug.c
index ab012a98aa..a775c46854 100644
--- a/source4/lib/debug.c
+++ b/source4/lib/debug.c
@@ -74,8 +74,6 @@ void reopen_logs(void)
 	char *fname = NULL;
 	int old_fd = state.fd;
 
-	state.fd = 0;
-
 	switch (state.logtype) {
 	case DEBUG_STDOUT:
 		state.fd = 1;
@@ -89,12 +87,20 @@ void reopen_logs(void)
 		if ((*logfile) == '/') {
 			fname = strdup(logfile);
 		} else {
-			asprintf(&fname, "%s/%s.log", dyn_LOGFILEBASE, logfile);
+			asprintf(&fname, "%s/%s.log", dyn_LOGFILEBASE, state.prog_name);
 		}
 		if (fname) {
-			state.fd = open(fname, O_CREAT|O_APPEND|O_WRONLY, 0644);
+			int newfd = open(fname, O_CREAT|O_APPEND|O_WRONLY, 0600);
+			if (newfd == -1) {
+				DEBUG(1, ("Failed to open new logfile: %s\n", fname));
+			} else {
+				state.fd = newfd;
+			}
 			free(fname);
+		} else {
+			DEBUG(1, ("Failed to find name for file-based logfile!\n"));
 		}
+
 		break;
 	}
 
@@ -109,8 +115,12 @@ void reopen_logs(void)
 */
 void setup_logging(const char *prog_name, enum debug_logtype new_logtype)
 {
-	state.logtype = new_logtype;
-	state.prog_name = prog_name;
+	if (state.logtype < new_logtype) {
+		state.logtype = new_logtype;
+	}
+	if (prog_name) {
+		state.prog_name = prog_name;
+	}
 	reopen_logs();
 }
 
diff --git a/source4/lib/registry/tools/regdiff.c b/source4/lib/registry/tools/regdiff.c
index 4260a56142..f86c0ae383 100644
--- a/source4/lib/registry/tools/regdiff.c
+++ b/source4/lib/registry/tools/regdiff.c
@@ -121,21 +121,18 @@ static void writediff(struct registry_key *oldkey, struct registry_key *newkey,
 	WERROR error, error2;
 	struct poptOption long_options[] = {
 		POPT_AUTOHELP
-		POPT_COMMON_CREDENTIALS
 		{"output", 'o', POPT_ARG_STRING, &outputfile, 'o', "output file to use", NULL },
 		{"null", 'n', POPT_ARG_NONE, &from_null, 'n', "Diff from NULL", NULL },
 		{"remote", 'R', POPT_ARG_STRING, NULL, 0, "Connect to remote server" , NULL },
 		{"local", 'L', POPT_ARG_NONE, NULL, 0, "Open local registry", NULL },
+		POPT_COMMON_SAMBA
+		POPT_COMMON_CREDENTIALS
+		POPT_COMMON_VERSION
 		POPT_TABLEEND
 	};
 
 	regdiff_init_subsystems;
 
-	if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
-		fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
-	}
-
-
 	pc = poptGetContext(argv[0], argc, (const char **) argv, long_options,0);
 
 	while((opt = poptGetNextOpt(pc)) != -1) {
@@ -157,7 +154,6 @@ static void writediff(struct registry_key *oldkey, struct registry_key *newkey,
 			return 1;
 		}
 	}
-	setup_logging(argv[0], DEBUG_STDOUT);
 
 	poptFreeContext(pc);
 
diff --git a/source4/lib/registry/tools/regpatch.c b/source4/lib/registry/tools/regpatch.c
index 5c9851b71b..02ef4d4655 100644
--- a/source4/lib/registry/tools/regpatch.c
+++ b/source4/lib/registry/tools/regpatch.c
@@ -749,25 +749,19 @@ static int nt_apply_reg_command_file(struct registry_context *r, const char *cmd
 	WERROR error;
 	struct poptOption long_options[] = {
 		POPT_AUTOHELP
-		POPT_COMMON_CREDENTIALS
 		{"remote", 'R', POPT_ARG_STRING, &remote, 0, "connect to specified remote server", NULL},
+		POPT_COMMON_SAMBA
+		POPT_COMMON_CREDENTIALS
 		POPT_TABLEEND
 	};
 
 	regpatch_init_subsystems;
 
-	if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
-		fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
-	}
-
-
 	pc = poptGetContext(argv[0], argc, (const char **) argv, long_options,0);
 
 	while((opt = poptGetNextOpt(pc)) != -1) {
 	}
 
-	setup_logging(argv[0], DEBUG_STDOUT);
-
 	if (remote) {
 		error = reg_open_remote (&h, cmdline_credentials, remote);
 	} else {
diff --git a/source4/lib/registry/tools/regshell.c b/source4/lib/registry/tools/regshell.c
index 03cb09c443..0c53f737b8 100644
--- a/source4/lib/registry/tools/regshell.c
+++ b/source4/lib/registry/tools/regshell.c
@@ -374,26 +374,21 @@ static char **reg_completion(const char *text, int start, int end)
 	struct registry_context *h = NULL;
 	struct poptOption long_options[] = {
 		POPT_AUTOHELP
-		POPT_COMMON_CREDENTIALS
 		{"backend", 'b', POPT_ARG_STRING, &backend, 0, "backend to use", NULL},
 		{"remote", 'R', POPT_ARG_STRING, &remote, 0, "connect to specified remote server", NULL},
+		POPT_COMMON_SAMBA
+		POPT_COMMON_CREDENTIALS
+		POPT_COMMON_VERSION
 		POPT_TABLEEND
 	};
 
 	regshell_init_subsystems;
 
-	if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
-		fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
-	}
-
-	
 	pc = poptGetContext(argv[0], argc, (const char **) argv, long_options,0);
 	
 	while((opt = poptGetNextOpt(pc)) != -1) {
 	}
 
-	setup_logging("regtree", DEBUG_STDOUT);
-
 	if (remote) {
 		error = reg_open_remote (&h, cmdline_credentials, remote); 
 	} else if (backend) {
diff --git a/source4/lib/registry/tools/regtree.c b/source4/lib/registry/tools/regtree.c
index 2cf5f6ab96..f18467b523 100644
--- a/source4/lib/registry/tools/regtree.c
+++ b/source4/lib/registry/tools/regtree.c
@@ -82,28 +82,22 @@ static void print_tree(int l, struct registry_key *p, int fullpath, int novals)
 	int fullpath = 0, no_values = 0;
 	struct poptOption long_options[] = {
 		POPT_AUTOHELP
-		POPT_COMMON_CREDENTIALS	
 		{"backend", 'b', POPT_ARG_STRING, &backend, 0, "backend to use", NULL},
 		{"fullpath", 'f', POPT_ARG_NONE, &fullpath, 0, "show full paths", NULL},
 		{"remote", 'R', POPT_ARG_STRING, &remote, 0, "connect to specified remote server", NULL },
 		{"no-values", 'V', POPT_ARG_NONE, &no_values, 0, "don't show values", NULL},
+		POPT_COMMON_SAMBA	
+		POPT_COMMON_CREDENTIALS	
 		POPT_TABLEEND
 	};
 
 	regtree_init_subsystems;
 
-	if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
-		fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
-	}
-
-
 	pc = poptGetContext(argv[0], argc, (const char **) argv, long_options,0);
 	
 	while((opt = poptGetNextOpt(pc)) != -1) {
 	}
 
-	setup_logging("regtree", DEBUG_STDOUT);
-
 	if (remote) {
 		error = reg_open_remote(&h, cmdline_credentials, remote);
 	} else if (backend) {