New applets, ftpget and ftpput

1 files changed, 405 insertions, 0 deletions

diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
new file mode 100644
index 0000000..4cebbc7
--- /dev/null
+++ b/networking/ftpgetput.c
@@ -0,0 +1,405 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * ftpget 
+ *  
+ * Mini implementation of FTP to retrieve a remote file.
+ *
+ * Copyright (C) 2002 Jeff Angielski, The PTR Group <jeff@theptrgroup.com>
+ * Copyright (C) 2002 Glenn McGrath <bug1@optushome.com.au>
+ *
+ * Based on wget.c by Chip Rosenthal Covad Communications
+ * <chip@laserlink.net>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <netinet/in.h>
+#include <netdb.h>
+
+#include "busybox.h"
+
+typedef struct ftp_host_info_s {
+	char *host;
+	char *port;
+	char *user;
+	char *password;
+} ftp_host_info_t;
+
+static char verbose_flag;
+static char do_continue = 0;
+
+/* If chunksize == 0 read till end of file */
+static int copyfd_chunk(int fd1, int fd2, off_t chunksize)
+{
+	size_t nread;
+	size_t nwritten;
+	size_t size;
+	char buffer[BUFSIZ];
+
+	do {
+		if ((chunksize > BUFSIZ) || (chunksize == 0)) {
+			size = BUFSIZ;
+		} else {
+			size = chunksize;
+		}
+
+		nread = safe_read(fd1, buffer, size);
+
+		if (nread < 0) {
+			if (chunksize) {
+				perror_msg_and_die("read error");
+			} else {
+				return(0);
+			}
+		}
+
+		nwritten = full_write(fd2, buffer, nread);
+
+		if (nwritten != nread) {
+			error_msg_and_die("Unable to write all data");
+		}
+
+		if (chunksize) {
+			chunksize -= nwritten;
+		}
+
+	} while (chunksize);
+
+	return 0;
+}
+
+static ftp_host_info_t *ftp_init(void)
+{
+	ftp_host_info_t *host;
+
+	host = xcalloc(1, sizeof(ftp_host_info_t));
+
+	/* Set the default port */
+	if (getservbyname("ftp", "tcp")) {
+		host->port = "ftp";
+	} else {
+		host->port = "21";
+	}
+	host->user = "anonymous";
+	host->password = "busybox@";
+
+	return(host);
+}
+
+static int ftpcmd(const char *s1, const char *s2, FILE *stream, char *buf)
+{
+	if (verbose_flag) {
+		error_msg("cmd %s%s", s1, s2);
+	}
+
+	if (s1) {
+		if (s2) {
+			fprintf(stream, "%s%s\n", s1, s2);
+		} else {
+			fprintf(stream, "%s\n", s1);
+		}
+	}
+
+	do {
+		if (fgets(buf, 510, stream) == NULL) {
+			perror_msg_and_die("fgets()");
+		}
+	} while (! isdigit(buf[0]) || buf[3] != ' ');
+
+	return atoi(buf);
+}
+
+static int xconnect_ftpdata(const char *target_host, const char *buf)
+{
+	char *buf_ptr;
+	char data_port[6];
+	unsigned short port_num;
+
+	buf_ptr = strrchr(buf, ',');
+	*buf_ptr = '\0';
+	port_num = atoi(buf_ptr + 1);
+
+	buf_ptr = strrchr(buf, ',');
+	*buf_ptr = '\0';
+	port_num += atoi(buf_ptr + 1) * 256;
+
+	sprintf(data_port, "%d", port_num);
+	return(xconnect(target_host, data_port));
+}
+
+static FILE *ftp_login(ftp_host_info_t *server)
+{
+	FILE *control_stream;
+	char buf[512];
+	int control_fd;
+
+	/* Connect to the command socket */
+	control_fd = xconnect(server->host, server->port);
+	control_stream = fdopen(control_fd, "r+");
+	if (control_stream == NULL) {
+		perror_msg_and_die("Couldnt open control stream");
+	}
+
+	if (ftpcmd(NULL, NULL, control_stream, buf) != 220) {
+		error_msg_and_die("%s", buf + 4);
+	}
+
+	/*  Login to the server */
+	switch (ftpcmd("USER ", server->user, control_stream, buf)) {
+	case 230:
+		break;
+	case 331:
+		if (ftpcmd("PASS ", server->password, control_stream, buf) != 230) {
+			error_msg_and_die("PASS error: %s", buf + 4);
+		}
+		break;
+	default:
+		error_msg_and_die("USER error: %s", buf + 4);
+	}
+
+	ftpcmd("TYPE I", NULL, control_stream, buf);
+
+	return(control_stream);
+}
+
+#ifdef CONFIG_FTPGET
+static int ftp_recieve(FILE *control_stream, const char *host, const char *local_path, char *server_path)
+{
+	char *filename;
+	char *local_file;
+	char buf[512];
+	off_t filesize = 0;
+	int fd_data;
+	int fd_local;
+	off_t beg_range = 0;
+
+	filename = get_last_path_component(server_path);
+	local_file = concat_path_file(local_path, filename);
+
+	/* Connect to the data socket */
+	if (ftpcmd("PASV", NULL, control_stream, buf) != 227) {
+		error_msg_and_die("PASV error: %s", buf + 4);
+	}
+	fd_data = xconnect_ftpdata(host, buf);
+
+	if (ftpcmd("SIZE ", server_path, control_stream, buf) == 213) {
+		filesize = atol(buf + 4);
+	}
+
+	/* only make a local file if we know that one exists on the remote server */
+	if (do_continue) {
+		fd_local = xopen(local_file, O_APPEND | O_WRONLY);
+	} else {
+		fd_local = xopen(local_file, O_CREAT | O_TRUNC | O_WRONLY);
+	}
+
+	if (do_continue) {
+		struct stat sbuf;
+		if (fstat(fd_local, &sbuf) < 0) {
+			perror_msg_and_die("fstat()");
+		}
+		if (sbuf.st_size > 0) {
+			beg_range = sbuf.st_size;
+		} else {
+			do_continue = 0;
+		}
+	}
+
+	if (do_continue) {
+		sprintf(buf, "REST %ld", beg_range);
+		if (ftpcmd(buf, NULL, control_stream, buf) != 350) {
+			do_continue = 0;
+		} else {
+			filesize -= beg_range;
+		}
+	}
+
+	if (ftpcmd("RETR ", server_path, control_stream, buf) > 150) {
+		error_msg_and_die("RETR error: %s", buf + 4);
+	}
+
+	/* Copy the file */
+	copyfd_chunk(fd_data, fd_local, filesize);
+
+	/* close it all down */
+	close(fd_data);
+	if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
+		error_msg_and_die("ftp error: %s", buf + 4);
+	}
+	ftpcmd("QUIT", NULL, control_stream, buf);
+	
+	return(EXIT_SUCCESS);
+}
+#endif
+
+#ifdef CONFIG_FTPPUT
+static int ftp_send(FILE *control_stream, const char *host, const char *local_path, char *server_path)
+{
+	struct stat sbuf;
+	char buf[512];
+	int fd_data;
+	int fd_local;
+	int response;
+
+	/*  Connect to the data socket */
+	if (ftpcmd("PASV", NULL, control_stream, buf) != 227) {
+		error_msg_and_die("PASV error: %s", buf + 4);
+	}
+	fd_data = xconnect_ftpdata(host, buf);
+
+	if (ftpcmd("CWD ", server_path, control_stream, buf) != 250) {
+		error_msg_and_die("CWD error: %s", buf + 4);
+	}
+
+	/* get the local file */
+	fd_local = xopen(local_path, O_RDONLY);
+	fstat(fd_local, &sbuf);
+
+	sprintf(buf, "ALLO %lu", sbuf.st_size);
+	response = ftpcmd(buf, NULL, control_stream, buf);
+	switch (response) {
+	case 200:
+	case 202:
+		break;
+	default:
+		close(fd_local);
+		error_msg_and_die("ALLO error: %s", buf + 4);
+		break;
+	}
+
+	response = ftpcmd("STOR ", local_path, control_stream, buf);
+	switch (response) {
+	case 125:
+	case 150:
+		break;
+	default:
+		close(fd_local);
+		error_msg_and_die("STOR error: %s", buf + 4);
+	}
+
+	/* transfer the file  */
+	copyfd_chunk(fd_local, fd_data, 0);
+
+	/* close it all down */
+	close(fd_data);
+	if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
+		error_msg_and_die("error: %s", buf + 4);
+	}
+	ftpcmd("QUIT", NULL, control_stream, buf);
+
+	return(EXIT_SUCCESS);
+}
+#endif
+
+int ftpgetput_main(int argc, char **argv)
+{
+	/* content-length of the file */
+	int option_index = -1;
+	int opt;
+
+	/* socket to ftp server */
+	FILE *control_stream;
+
+	/* continue a prev transfer (-c) */
+	ftp_host_info_t *server;
+
+	int (*ftp_action)(FILE *, const char *, const char *, char *) = NULL;
+
+	struct option long_options[] = {
+		{"username", 1, NULL, 'u'},
+		{"password", 1, NULL, 'p'},
+		{"port", 1, NULL, 'P'},
+		{"continue", 1, NULL, 'c'},
+		{"verbose", 0, NULL, 'v'},
+		{0, 0, 0, 0}
+	};
+
+#ifdef CONFIG_FTPPUT
+	if (applet_name[3] == 'p') {
+		ftp_action = ftp_send;
+	} 
+#endif
+#ifdef CONFIG_FTPGET
+	if (applet_name[3] == 'g') {
+		ftp_action = ftp_recieve;
+	}
+#endif
+
+	/* Set default values */
+	server = ftp_init();
+	verbose_flag = 0;
+
+	/* 
+	 * Decipher the command line 
+	 */
+	while ((opt = getopt_long(argc, argv, "u:p:P:cv", long_options, &option_index)) != EOF) {
+		switch(opt) {
+		case 'c':
+			do_continue = 1;
+			break;
+		case 'u':
+			server->user = optarg;
+			break;
+		case 'p':
+			server->password = optarg;
+			break;
+		case 'P':
+			server->port = optarg;
+			break;
+		case 'v':
+			verbose_flag = 1;
+			break;
+		default:
+			show_usage();
+		}
+	}
+
+	/*
+	 * Process the non-option command line arguments
+	 */
+	if (argc - optind != 3) {
+		show_usage();
+	}
+
+	/*  Connect/Setup/Configure the FTP session */
+	server->host = argv[optind];
+	control_stream = ftp_login(server);
+
+	return(ftp_action(control_stream, argv[optind], argv[optind + 1], argv[optind + 2]));
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/