/* vi: set sw=4 ts=4: */
/*
- * ftpget
- *
+ * 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>
+ * Copyright (C) 2002 Glenn McGrath
*
* 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
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#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"
+#include "libbb.h"
typedef struct ftp_host_info_s {
- char *host;
- char *port;
- char *user;
- char *password;
+ const char *user;
+ const char *password;
+ struct len_and_sockaddr *lsa;
} ftp_host_info_t;
-static char verbose_flag;
-static char do_continue = 0;
+static smallint verbose_flag;
+static smallint do_continue;
-static int copyfd_chunk(int fd1, int fd2, const off_t chunksize)
+static void ftp_die(const char *msg, const char *remote) ATTRIBUTE_NORETURN;
+static void ftp_die(const char *msg, const char *remote)
{
- size_t nread;
- size_t nwritten;
- size_t size;
- size_t remaining;
- char buffer[BUFSIZ];
-
- if (chunksize) {
- remaining = chunksize;
- } else {
- remaining = -1;
- }
-
- 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) {
- remaining -= nwritten;
- }
- } while (remaining != 0);
-
- return 0;
+ /* Guard against garbage from remote server */
+ const char *cp = remote;
+ while (*cp >= ' ' && *cp < '\x7f') cp++;
+ bb_error_msg_and_die("unexpected server response%s%s: %.*s",
+ msg ? " to " : "", msg ? msg : "",
+ (int)(cp - remote), remote);
}
-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)
{
+ unsigned n;
if (verbose_flag) {
- error_msg("cmd %s%s", s1, s2);
+ bb_error_msg("cmd %s %s", s1, s2);
}
if (s1) {
if (s2) {
- fprintf(stream, "%s%s\n", s1, s2);
+ fprintf(stream, "%s %s\r\n", s1, s2);
} else {
- fprintf(stream, "%s\n", s1);
+ fprintf(stream, "%s\r\n", s1);
}
}
-
do {
+ char *buf_ptr;
+
if (fgets(buf, 510, stream) == NULL) {
- perror_msg_and_die("fgets()");
+ bb_perror_msg_and_die("fgets");
}
- } while (! isdigit(buf[0]) || buf[3] != ' ');
+ buf_ptr = strstr(buf, "\r\n");
+ if (buf_ptr) {
+ *buf_ptr = '\0';
+ }
+ } while (!isdigit(buf[0]) || buf[3] != ' ');
- return atoi(buf);
+ buf[3] = '\0';
+ n = xatou(buf);
+ buf[3] = ' ';
+ return n;
}
-static int xconnect_ftpdata(const char *target_host, const char *buf)
+static int xconnect_ftpdata(ftp_host_info_t *server, char *buf)
{
char *buf_ptr;
- char data_port[6];
- unsigned short port_num;
+ unsigned port_num;
+
+ /* Response is "NNN garbageN1,N2,N3,N4,P1,P2[)garbage]
+ * Server's IP is N1.N2.N3.N4 (we ignore it)
+ * Server's port for data connection is P1*256+P2 */
+ buf_ptr = strrchr(buf, ')');
+ if (buf_ptr) *buf_ptr = '\0';
buf_ptr = strrchr(buf, ',');
*buf_ptr = '\0';
- port_num = atoi(buf_ptr + 1);
+ port_num = xatoul_range(buf_ptr + 1, 0, 255);
buf_ptr = strrchr(buf, ',');
*buf_ptr = '\0';
- port_num += atoi(buf_ptr + 1) * 256;
+ port_num += xatoul_range(buf_ptr + 1, 0, 255) * 256;
- sprintf(data_port, "%d", port_num);
- return(xconnect(target_host, data_port));
+ set_nport(server->lsa, htons(port_num));
+ return xconnect_stream(server->lsa);
}
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+");
+ control_stream = fdopen(xconnect_stream(server->lsa), "r+");
if (control_stream == NULL) {
- perror_msg_and_die("Couldnt open control stream");
+ /* fdopen failed - extremely unlikely */
+ bb_perror_nomsg_and_die();
}
if (ftpcmd(NULL, NULL, control_stream, buf) != 220) {
- error_msg_and_die("%s", buf + 4);
+ ftp_die(NULL, buf);
}
/* Login to the server */
- switch (ftpcmd("USER ", server->user, control_stream, buf)) {
+ 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);
+ if (ftpcmd("PASS", server->password, control_stream, buf) != 230) {
+ ftp_die("PASS", buf);
}
break;
default:
- error_msg_and_die("USER error: %s", buf + 4);
+ ftp_die("USER", buf);
}
ftpcmd("TYPE I", NULL, control_stream, buf);
- return(control_stream);
+ return control_stream;
}
-#ifdef CONFIG_FTPGET
-static int ftp_recieve(FILE *control_stream, const char *host, const char *local_path, char *server_path)
+#if !ENABLE_FTPGET
+int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
+ const char *local_path, char *server_path);
+#else
+static
+int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
+ const char *local_path, char *server_path)
{
- char *filename;
- char *local_file;
char buf[512];
- off_t filesize = 0;
+/* I think 'filesize' usage here is bogus. Let's see... */
+ //off_t filesize = -1;
+#define filesize ((off_t)-1)
int fd_data;
- int fd_local;
+ int fd_local = -1;
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);
+ ftp_die("PASV", buf);
}
- fd_data = xconnect_ftpdata(host, buf);
+ fd_data = xconnect_ftpdata(server, buf);
- if (ftpcmd("SIZE ", server_path, control_stream, buf) == 213) {
- filesize = atol(buf + 4);
+ if (ftpcmd("SIZE", server_path, control_stream, buf) == 213) {
+ //filesize = BB_STRTOOFF(buf + 4, NULL, 10);
+ //if (errno || filesize < 0)
+ // ftp_die("SIZE", buf);
+ } else {
+ do_continue = 0;
}
- /* 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 (LONE_DASH(local_path)) {
+ fd_local = STDOUT_FILENO;
+ do_continue = 0;
}
if (do_continue) {
struct stat sbuf;
- if (fstat(fd_local, &sbuf) < 0) {
- perror_msg_and_die("fstat()");
+ if (lstat(local_path, &sbuf) < 0) {
+ bb_perror_msg_and_die("lstat");
}
if (sbuf.st_size > 0) {
beg_range = sbuf.st_size;
}
if (do_continue) {
- sprintf(buf, "REST %ld", beg_range);
+ sprintf(buf, "REST %"OFF_FMT"d", beg_range);
if (ftpcmd(buf, NULL, control_stream, buf) != 350) {
do_continue = 0;
} else {
- filesize -= beg_range;
+ //if (filesize != -1)
+ // filesize -= beg_range;
}
}
- if (ftpcmd("RETR ", server_path, control_stream, buf) > 150) {
- error_msg_and_die("RETR error: %s", buf + 4);
+ if (ftpcmd("RETR", server_path, control_stream, buf) > 150) {
+ ftp_die("RETR", buf);
+ }
+
+ /* only make a local file if we know that one exists on the remote server */
+ if (fd_local == -1) {
+ if (do_continue) {
+ fd_local = xopen(local_path, O_APPEND | O_WRONLY);
+ } else {
+ fd_local = xopen(local_path, O_CREAT | O_TRUNC | O_WRONLY);
+ }
}
/* Copy the file */
- copyfd_chunk(fd_data, fd_local, filesize);
+ if (filesize != -1) {
+ if (bb_copyfd_size(fd_data, fd_local, filesize) == -1)
+ return EXIT_FAILURE;
+ } else {
+ if (bb_copyfd_eof(fd_data, fd_local) == -1)
+ return EXIT_FAILURE;
+ }
/* close it all down */
close(fd_data);
if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
- error_msg_and_die("ftp error: %s", buf + 4);
+ ftp_die(NULL, buf);
}
ftpcmd("QUIT", NULL, control_stream, buf);
-
- return(EXIT_SUCCESS);
+
+ return EXIT_SUCCESS;
}
#endif
-#ifdef CONFIG_FTPPUT
-static int ftp_send(FILE *control_stream, const char *host, const char *server_path, char *local_path)
+#if !ENABLE_FTPPUT
+int ftp_send(ftp_host_info_t *server, FILE *control_stream,
+ const char *server_path, char *local_path);
+#else
+static
+int ftp_send(ftp_host_info_t *server, FILE *control_stream,
+ const char *server_path, char *local_path)
{
struct stat sbuf;
char buf[512];
/* 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);
+ ftp_die("PASV", buf);
}
+ fd_data = xconnect_ftpdata(server, buf);
/* 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;
+ fd_local = STDIN_FILENO;
+ if (NOT_LONE_DASH(local_path)) {
+ fd_local = xopen(local_path, O_RDONLY);
+ fstat(fd_local, &sbuf);
+
+ sprintf(buf, "ALLO %"OFF_FMT"u", sbuf.st_size);
+ response = ftpcmd(buf, NULL, control_stream, buf);
+ switch (response) {
+ case 200:
+ case 202:
+ break;
+ default:
+ close(fd_local);
+ ftp_die("ALLO", buf);
+ break;
+ }
}
-
- response = ftpcmd("STOR ", local_path, control_stream, buf);
+ response = ftpcmd("STOR", server_path, control_stream, buf);
switch (response) {
case 125:
case 150:
break;
default:
close(fd_local);
- error_msg_and_die("STOR error: %s", buf + 4);
+ ftp_die("STOR", buf);
}
/* transfer the file */
- copyfd_chunk(fd_local, fd_data, 0);
+ if (bb_copyfd_eof(fd_local, fd_data) == -1) {
+ exit(EXIT_FAILURE);
+ }
/* close it all down */
close(fd_data);
if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
- error_msg_and_die("error: %s", buf + 4);
+ ftp_die("close", buf);
}
ftpcmd("QUIT", NULL, control_stream, buf);
- return(EXIT_SUCCESS);
+ return EXIT_SUCCESS;
}
#endif
-int ftpgetput_main(int argc, char **argv)
+#define FTPGETPUT_OPT_CONTINUE 1
+#define FTPGETPUT_OPT_VERBOSE 2
+#define FTPGETPUT_OPT_USER 4
+#define FTPGETPUT_OPT_PASSWORD 8
+#define FTPGETPUT_OPT_PORT 16
+
+#if ENABLE_FEATURE_FTPGETPUT_LONG_OPTIONS
+static const char ftpgetput_longopts[] ALIGN1 =
+ "continue\0" Required_argument "c"
+ "verbose\0" No_argument "v"
+ "username\0" Required_argument "u"
+ "password\0" Required_argument "p"
+ "port\0" Required_argument "P"
+ ;
+#endif
+
+int ftpgetput_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int ftpgetput_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
/* content-length of the file */
- int option_index = -1;
- int opt;
-
+ unsigned opt;
+ const char *port = "ftp";
/* socket to ftp server */
FILE *control_stream;
-
- /* continue a prev transfer (-c) */
+ /* continue previous 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 ENABLE_FTPPUT && !ENABLE_FTPGET
+# define ftp_action ftp_send
+#elif ENABLE_FTPGET && !ENABLE_FTPPUT
+# define ftp_action ftp_receive
+#else
+ int (*ftp_action)(ftp_host_info_t *, FILE *, const char *, char *) = ftp_send;
+ /* Check to see if the command is ftpget or ftput */
if (applet_name[3] == 'g') {
- ftp_action = ftp_recieve;
+ ftp_action = ftp_receive;
}
#endif
/* Set default values */
- server = ftp_init();
- verbose_flag = 0;
+ server = xmalloc(sizeof(*server));
+ server->user = "anonymous";
+ server->password = "busybox@";
- /*
- * Decipher the command line
+ /*
+ * 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();
- }
+#if ENABLE_FEATURE_FTPGETPUT_LONG_OPTIONS
+ applet_long_options = ftpgetput_longopts;
+#endif
+ opt_complementary = "=3"; /* must have 3 params */
+ opt = getopt32(argv, "cvu:p:P:", &server->user, &server->password, &port);
+ argv += optind;
+
+ /* Process the non-option command line arguments */
+ if (opt & FTPGETPUT_OPT_CONTINUE) {
+ do_continue = 1;
+ }
+ if (opt & FTPGETPUT_OPT_VERBOSE) {
+ verbose_flag = 1;
}
- /*
- * Process the non-option command line arguments
- */
- if (argc - optind != 3) {
- show_usage();
+ /* We want to do exactly _one_ DNS lookup, since some
+ * sites (i.e. ftp.us.debian.org) use round-robin DNS
+ * and we want to connect to only one IP... */
+ server->lsa = xhost2sockaddr(argv[0], bb_lookup_port(port, "tcp", 21));
+ if (verbose_flag) {
+ printf("Connecting to %s (%s)\n", argv[0],
+ xmalloc_sockaddr2dotted(&server->lsa->u.sa));
}
/* 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]));
+ return ftp_action(server, control_stream, argv[1], argv[2]);
}
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/
projects / oweals / busybox.git / blobdiff