From 3591c0660c52cec9fa06e7539b56604a7499fa10 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Sun, 10 May 1998 01:46:06 +0000
Subject: [PATCH] cleanup code a bit

---
 Makefile.in    |   2 +-
 clientserver.c | 245 +++++++++++++++++++++++++++++++++++++++++++++++++
 main.c         | 242 ++++--------------------------------------------
 rsync.h        |   1 +
 4 files changed, 263 insertions(+), 227 deletions(-)
 create mode 100644 clientserver.c

diff --git a/Makefile.in b/Makefile.in
index f8ed5464..46fe29e5 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -22,7 +22,7 @@ SHELL=/bin/sh
 
 LIBOBJ=lib/getopt.o lib/fnmatch.o lib/zlib.o lib/compat.o
 OBJS1=rsync.o exclude.o util.o md4.o main.o checksum.o match.o syscall.o log.o
-DAEMON_OBJ = params.o loadparm.o 
+DAEMON_OBJ = params.o loadparm.o clientserver.o
 OBJS=$(OBJS1) $(DAEMON_OBJ) flist.o io.o compat.o hlink.o token.o uidlist.o socket.o $(LIBOBJ)
 
 # note that the -I. is needed to handle config.h when using VPATH
diff --git a/clientserver.c b/clientserver.c
new file mode 100644
index 00000000..6d6e01d6
--- /dev/null
+++ b/clientserver.c
@@ -0,0 +1,245 @@
+/* 
+   Copyright (C) Andrew Tridgell 1998
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/* the socket based protocol for setting up a connection wit rsyncd */
+
+#include "rsync.h"
+
+extern int module_id;
+extern int read_only;
+extern int verbose;
+extern int rsync_port;
+
+int start_socket_client(char *host, char *path, int argc, char *argv[])
+{
+	int fd, i;
+	char *sargs[MAX_ARGS];
+	int sargc=0;
+	char line[1024];
+	char *p;
+	int version;
+
+	fd = open_socket_out(host, rsync_port);
+	if (fd == -1) {
+		exit_cleanup(1);
+	}
+	
+	server_options(sargs,&sargc);
+
+	sargs[sargc++] = ".";
+
+	if (path && *path) 
+		sargs[sargc++] = path;
+
+	sargs[sargc] = NULL;
+
+	p = strchr(path,'/');
+	if (p) *p = 0;
+	io_printf(fd,"%s\n",path);
+	if (p) *p = '/';
+
+	if (!read_line(fd, line, sizeof(line)-1)) {
+		return -1;
+	}
+
+	if (sscanf(line,"@RSYNCD: %d", &version) != 1) {
+		return -1;
+	}
+
+	while (1) {
+		if (!read_line(fd, line, sizeof(line)-1)) {
+			return -1;
+		}
+		if (strcmp(line,"@RSYNCD: OK") == 0) break;
+		rprintf(FINFO,"%s\n", line);
+	}
+
+	for (i=0;i<sargc;i++) {
+		io_printf(fd,"%s\n", sargs[i]);
+	}
+	io_printf(fd,"\n");
+
+#if 0
+	while (1) {
+		if (!read_line(fd, line, sizeof(line)-1)) {
+			return -1;
+		}
+		rprintf(FINFO,"%s\n", line);
+	}
+#endif
+
+	return client_run(fd, fd, -1, argc, argv);
+}
+
+
+
+static int rsync_module(int fd, int i)
+{
+	int argc=0;
+	char *argv[MAX_ARGS];
+	char **argp;
+	char line[1024];
+
+	module_id = i;
+
+	if (lp_read_only(i))
+		read_only = 1;
+
+	rprintf(FERROR,"rsyncd starting\n");
+
+	if (chroot(lp_path(i))) {
+		io_printf(fd,"@ERROR: chroot failed\n");
+		return -1;
+	}
+
+	if (chdir("/")) {
+		io_printf(fd,"@ERROR: chdir failed\n");
+		return -1;
+	}
+
+	if (setgid(lp_gid(i))) {
+		io_printf(fd,"@ERROR: setgid failed\n");
+		return -1;
+	}
+
+	if (setuid(lp_uid(i))) {
+		io_printf(fd,"@ERROR: setuid failed\n");
+		return -1;
+	}
+
+	io_printf(fd,"@RSYNCD: OK\n");
+
+	argv[argc++] = "rsyncd";
+
+	while (1) {
+		if (!read_line(fd, line, sizeof(line)-1)) {
+			return -1;
+		}
+
+		if (!*line) break;
+
+		argv[argc] = strdup(line);
+		if (!argv[argc]) {
+			return -1;
+		}
+
+		argc++;
+		if (argc == MAX_ARGS) {
+			return -1;
+		}
+	}
+
+	parse_arguments(argc, argv);
+
+	/* don't allow the logs to be flooded too fast */
+	if (verbose > 1) verbose = 1;
+
+	argc -= optind;
+	argp = argv + optind;
+	optind = 0;
+
+	start_server(fd, fd, argc, argp);
+
+	return 0;
+}
+
+static void send_listing(int fd)
+{
+	int n = lp_numservices();
+	int i;
+	
+	for (i=0;i<n;i++)
+		if (lp_list(i))
+		    io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i));
+}
+
+/* this is called when a socket connection is established to a client
+   and we want to start talking. The setup of the system is done from
+   here */
+static int start_daemon(int fd)
+{
+	char line[1024];
+	char *motd;
+
+	set_socket_options(fd,"SO_KEEPALIVE");
+
+	io_printf(fd,"@RSYNCD: %d\n", PROTOCOL_VERSION);
+
+	motd = lp_motd_file();
+	if (*motd) {
+		FILE *f = fopen(motd,"r");
+		while (f && !feof(f)) {
+			int len = fread(line, 1, sizeof(line)-1, f);
+			if (len > 0) {
+				line[len] = 0;
+				io_printf(fd,"%s", line);
+			}
+		}
+		if (f) fclose(f);
+		io_printf(fd,"\n");
+	}
+
+	/* read a single line indicating the resource that is wanted */
+	while (1) {
+		int i;
+
+		line[0] = 0;
+		if (!read_line(fd, line, sizeof(line)-1)) {
+			return -1;
+		}
+
+		if (!*line || strcmp(line,"#list")==0) {
+			send_listing(fd);
+			return -1;
+		} 
+
+		if (*line == '#') {
+			/* it's some sort of command that I don't understand */
+			io_printf(fd,"ERROR: Unknown command '%s'\n", line);
+			return -1;
+		}
+
+		i = lp_number(line);
+		if (i == -1) {
+			io_printf(fd,"ERROR: Unknown module '%s'\n", line);
+			return -1;
+		}
+
+		return rsync_module(fd, i);
+	}
+
+	return 0;
+}
+
+
+int daemon_main(void)
+{
+	if (!lp_load(RSYNCD_CONF)) {
+		exit_cleanup(1);
+	}
+
+	if (is_a_socket(STDIN_FILENO)) {
+		/* we are running via inetd */
+		return start_daemon(STDIN_FILENO);
+	}
+
+	become_daemon();
+
+	return start_accept_loop(rsync_port, start_daemon);
+}
+
diff --git a/main.c b/main.c
index 0bcc7f54..fc4dc60d 100644
--- a/main.c
+++ b/main.c
@@ -58,9 +58,9 @@ int force_delete = 0;
 int io_timeout = 0;
 int io_error = 0;
 int read_only = 0;
-static int module_id;
+int module_id = -1;
 
-static int port = RSYNC_PORT;
+int rsync_port = RSYNC_PORT;
 
 static char *shell_cmd;
 
@@ -105,7 +105,7 @@ static void report(int f)
 }
 
 
-static void server_options(char **args,int *argc)
+void server_options(char **args,int *argc)
 {
   int ac = *argc;
   static char argstr[50];
@@ -464,7 +464,7 @@ void start_server(int f_in, int f_out, int argc, char *argv[])
       exit_cleanup(0);
 }
 
-static int client_run(int f_in, int f_out, int pid, int argc, char *argv[])
+int client_run(int f_in, int f_out, int pid, int argc, char *argv[])
 {
 	struct file_list *flist;
 	int status = 0, status2 = 0;
@@ -512,67 +512,6 @@ static int client_run(int f_in, int f_out, int pid, int argc, char *argv[])
 }
 
 
-int start_socket_client(char *host, char *path, int argc, char *argv[])
-{
-	int fd, i;
-	char *sargs[MAX_ARGS];
-	int sargc=0;
-	char line[1024];
-	char *p;
-	int version;
-
-	fd = open_socket_out(host, port);
-	if (fd == -1) {
-		exit_cleanup(1);
-	}
-	
-	server_options(sargs,&sargc);
-
-	sargs[sargc++] = ".";
-
-	if (path && *path) 
-		sargs[sargc++] = path;
-
-	sargs[sargc] = NULL;
-
-	p = strchr(path,'/');
-	if (p) *p = 0;
-	io_printf(fd,"%s\n",path);
-	if (p) *p = '/';
-
-	if (!read_line(fd, line, sizeof(line)-1)) {
-		return -1;
-	}
-
-	if (sscanf(line,"RSYNCD %d", &version) != 1) {
-		return -1;
-	}
-
-	while (1) {
-		if (!read_line(fd, line, sizeof(line)-1)) {
-			return -1;
-		}
-		if (strcmp(line,"RSYNCD: OK") == 0) break;
-		rprintf(FINFO,"%s\n", line);
-	}
-
-	for (i=0;i<sargc;i++) {
-		io_printf(fd,"%s\n", sargs[i]);
-	}
-	io_printf(fd,"\n");
-
-#if 0
-	while (1) {
-		if (!read_line(fd, line, sizeof(line)-1)) {
-			return -1;
-		}
-		rprintf(FINFO,"%s\n", line);
-	}
-#endif
-
-	return client_run(fd, fd, -1, argc, argv);
-}
-
 int start_client(int argc, char *argv[])
 {
 	char *p;
@@ -589,6 +528,12 @@ int start_client(int argc, char *argv[])
 			*p = 0;
 			return start_socket_client(argv[0], p+2, argc-1, argv+1);
 		}
+
+		if (argc < 2) {
+			usage(FERROR);
+			exit_cleanup(1);
+		}
+
 		am_sender = 0;
 		*p = 0;
 		shell_machine = argv[0];
@@ -605,6 +550,11 @@ int start_client(int argc, char *argv[])
 			*p = 0;
 			return start_socket_client(argv[argc-1], p+2, argc-1, argv);
 		}
+
+		if (argc < 2) {
+			usage(FERROR);
+			exit_cleanup(1);
+		}
 		
 		if (local_server) {
 			shell_machine = NULL;
@@ -749,7 +699,7 @@ RETSIGTYPE sigusr1_handler(int val) {
 }
 
 
-static void parse_arguments(int argc, char *argv[])
+void parse_arguments(int argc, char *argv[])
 {
     int opt;
     int option_index;
@@ -938,161 +888,6 @@ static void parse_arguments(int argc, char *argv[])
     }
 }
 
-static int rsync_module(int fd, int i)
-{
-	int argc=0;
-	char *argv[MAX_ARGS];
-	char **argp;
-	char line[1024];
-
-	module_id = i;
-
-	if (lp_read_only(i))
-		read_only = 1;
-
-	rprintf(FERROR,"rsyncd starting\n");
-
-	if (chroot(lp_path(i))) {
-		io_printf(fd,"ERROR: chroot failed\n");
-		return -1;
-	}
-
-	if (chdir("/")) {
-		io_printf(fd,"ERROR: chdir failed\n");
-		return -1;
-	}
-
-	if (setgid(lp_gid(i))) {
-		io_printf(fd,"ERROR: setgid failed\n");
-		return -1;
-	}
-
-	if (setuid(lp_uid(i))) {
-		io_printf(fd,"ERROR: setuid failed\n");
-		return -1;
-	}
-
-	io_printf(fd,"RSYNCD: OK\n");
-
-	argv[argc++] = "rsyncd";
-
-	while (1) {
-		if (!read_line(fd, line, sizeof(line)-1)) {
-			return -1;
-		}
-
-		if (!*line) break;
-
-		argv[argc] = strdup(line);
-		if (!argv[argc]) {
-			return -1;
-		}
-
-		argc++;
-		if (argc == MAX_ARGS) {
-			return -1;
-		}
-	}
-
-	parse_arguments(argc, argv);
-
-	/* don't allow the logs to be flooded too fast */
-	if (verbose > 1) verbose = 1;
-
-	argc -= optind;
-	argp = argv + optind;
-	optind = 0;
-
-	start_server(fd, fd, argc, argp);
-
-	return 0;
-}
-
-static void send_listing(int fd)
-{
-	int n = lp_numservices();
-	int i;
-	
-	for (i=0;i<n;i++)
-		if (lp_list(i))
-		    io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i));
-}
-
-/* this is called when a socket connection is established to a client
-   and we want to start talking. The setup of the system is done from
-   here */
-static int start_daemon(int fd)
-{
-	char line[1024];
-	char *motd;
-
-	set_socket_options(fd,"SO_KEEPALIVE");
-
-	io_printf(fd,"RSYNCD %d\n", PROTOCOL_VERSION);
-
-	motd = lp_motd_file();
-	if (*motd) {
-		FILE *f = fopen(motd,"r");
-		while (f && !feof(f)) {
-			int len = fread(line, 1, sizeof(line)-1, f);
-			if (len > 0) {
-				line[len] = 0;
-				io_printf(fd,"%s", line);
-			}
-		}
-		if (f) fclose(f);
-		io_printf(fd,"\n");
-	}
-
-	/* read a single line indicating the resource that is wanted */
-	while (1) {
-		int i;
-
-		line[0] = 0;
-		if (!read_line(fd, line, sizeof(line)-1)) {
-			return -1;
-		}
-
-		if (!*line || strcmp(line,"#list")==0) {
-			send_listing(fd);
-			return -1;
-		} 
-
-		if (*line == '#') {
-			/* it's some sort of command that I don't understand */
-			io_printf(fd,"ERROR: Unknown command '%s'\n", line);
-			return -1;
-		}
-
-		i = lp_number(line);
-		if (i == -1) {
-			io_printf(fd,"ERROR: Unknown module '%s'\n", line);
-			return -1;
-		}
-
-		return rsync_module(fd, i);
-	}
-
-	return 0;
-}
-
-
-static int daemon_main(void)
-{
-	if (!lp_load(RSYNCD_CONF)) {
-		exit_cleanup(1);
-	}
-
-	if (is_a_socket(STDIN_FILENO)) {
-		/* we are running via inetd */
-		return start_daemon(STDIN_FILENO);
-	}
-
-	become_daemon();
-
-	return start_accept_loop(port, start_daemon);
-}
-
 int main(int argc,char *argv[])
 {
 
@@ -1134,11 +929,6 @@ int main(int argc,char *argv[])
 	    start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv);
     }
 
-    if (argc < 2) {
-      usage(FERROR);
-      exit_cleanup(1);
-    }
-
     return start_client(argc, argv);
 }
 
diff --git a/rsync.h b/rsync.h
index e2d77453..62c03467 100644
--- a/rsync.h
+++ b/rsync.h
@@ -73,6 +73,7 @@
 #include <unistd.h>
 #endif
 #include <stdio.h>
+#include <stddef.h>
 
 #ifdef HAVE_SYS_PARAM_H
 #include <sys/param.h>
-- 
2.34.1