New applets, ftpget and ftpput

5 files changed, 446 insertions, 0 deletions

diff --git a/include/applets.h b/include/applets.h
index bd2053039..5d8e7bb68 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -200,6 +200,12 @@
 #ifdef CONFIG_FSCK_MINIX
         APPLET_ODDNAME("fsck.minix", fsck_minix_main, _BB_DIR_SBIN, _BB_SUID_NEVER, fsck_minix)
 #endif
+#ifdef CONFIG_FTPGET
+        APPLET(ftpget, ftpgetput_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
+#endif
+#ifdef CONFIG_FTPPUT
+        APPLET(ftpput, ftpgetput_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_GETOPT
         APPLET(getopt, getopt_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif
diff --git a/include/usage.h b/include/usage.h
index d3c1e5072..3b519e65d 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -602,6 +602,27 @@
         "\t-m\tActivates MINIX-like \"mode not cleared\" warnings\n" \
         "\t-f\tForce file system check."
 
+#define ftpget_trivial_usage \
+        "[options] remote-host local-directory remote-file"
+#define ftpget_full_usage \
+        "Retrieve a remote file via FTP.\n\n" \
+        "Options:\n" \
+        "\t-c, --continue         Continue a previous transfer\n" \
+        "\t-v, --verbose          Verbose\n" \
+        "\t-u, --username         Username to be used\n" \
+        "\t-p, --password         Password to be used\n" \
+        "\t-P, --port             Port number to be used\n" 
+
+#define ftpput_trivial_usage \
+        "[options] remote-host remote-directory local-file"
+#define ftpput_full_usage \
+        "Store a local file on a remote machine via FTP.\n\n" \
+        "Options:\n" \
+        "\t-v, --verbose          Verbose\n" \
+        "\t-u, --username         Username to be used\n" \
+        "\t-p, --password         Password to be used\n" \
+        "\t-P, --port             Port number to be used\n" 
+
 #define getopt_trivial_usage \
         "[OPTIONS]..."
 #define getopt_full_usage \
diff --git a/networking/Config.in b/networking/Config.in
index b4b9462c3..b622b65f3 100644
--- a/networking/Config.in
+++ b/networking/Config.in
@@ -11,6 +11,18 @@ config CONFIG_FEATURE_IPV6
         help
           Please submit a patch to add help text for this item.
 
+config CONFIG_FTPGET
+        bool "ftpget"
+        default n
+        help
+          Retrieve a remote file via FTP.
+
+config CONFIG_FTPPUT
+        bool "ftpput"
+        default n
+        help
+          Store a remote file via FTP.
+
 config CONFIG_HOSTNAME
         bool "hostname"
         default n
diff --git a/networking/Makefile.in b/networking/Makefile.in
index e72b00194..c2ae451a4 100644
--- a/networking/Makefile.in
+++ b/networking/Makefile.in
@@ -23,6 +23,8 @@ NETWORKING_DIR:=$(TOPDIR)networking/
 endif
 
 NETWORKING-y:=
+NETWORKING-$(CONFIG_FTPGET)     += ftpgetput.o
+NETWORKING-$(CONFIG_FTPPUT)     += ftpgetput.o
 NETWORKING-$(CONFIG_HOSTNAME)   += hostname.o
 NETWORKING-$(CONFIG_IFCONFIG)   += ifconfig.o
 NETWORKING-$(CONFIG_IFUPDOWN)   += ifupdown.o
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
new file mode 100644
index 000000000..4cebbc71c
--- /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:
+*/