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authorDenis Vlasenko <vda.linux@googlemail.com>2006-12-27 04:35:04 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2006-12-27 04:35:04 +0000
commit8d42f86b146871ae4c4cafd3801a85f381249a14 (patch)
treeb963999fc54eddb65f1929b894f868e24851fc9c /networking/ftpgetput.c
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Correcting branch name to be like previous ones
Diffstat (limited to 'networking/ftpgetput.c')
-rw-r--r--networking/ftpgetput.c340
1 files changed, 340 insertions, 0 deletions
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
new file mode 100644
index 000000000..223d2435c
--- /dev/null
+++ b/networking/ftpgetput.c
@@ -0,0 +1,340 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * ftpget
4 *
5 * Mini implementation of FTP to retrieve a remote file.
6 *
7 * Copyright (C) 2002 Jeff Angielski, The PTR Group <jeff@theptrgroup.com>
8 * Copyright (C) 2002 Glenn McGrath <bug1@iinet.net.au>
9 *
10 * Based on wget.c by Chip Rosenthal Covad Communications
11 * <chip@laserlink.net>
12 *
13 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
14 */
15
16#include "busybox.h"
17#include <getopt.h>
18
19typedef struct ftp_host_info_s {
20 char *user;
21 char *password;
22 struct sockaddr_in *s_in;
23} ftp_host_info_t;
24
25static char verbose_flag = 0;
26static char do_continue = 0;
27
28static int ftpcmd(const char *s1, const char *s2, FILE *stream, char *buf)
29{
30 if (verbose_flag) {
31 bb_error_msg("cmd %s%s", s1, s2);
32 }
33
34 if (s1) {
35 if (s2) {
36 fprintf(stream, "%s%s\r\n", s1, s2);
37 } else {
38 fprintf(stream, "%s\r\n", s1);
39 }
40 }
41 do {
42 char *buf_ptr;
43
44 if (fgets(buf, 510, stream) == NULL) {
45 bb_perror_msg_and_die("fgets");
46 }
47 buf_ptr = strstr(buf, "\r\n");
48 if (buf_ptr) {
49 *buf_ptr = '\0';
50 }
51 } while (!isdigit(buf[0]) || buf[3] != ' ');
52
53 return xatou(buf);
54}
55
56static int xconnect_ftpdata(ftp_host_info_t *server, const char *buf)
57{
58 char *buf_ptr;
59 unsigned short port_num;
60
61 buf_ptr = strrchr(buf, ',');
62 *buf_ptr = '\0';
63 port_num = xatoul_range(buf_ptr + 1, 0, 255);
64
65 buf_ptr = strrchr(buf, ',');
66 *buf_ptr = '\0';
67 port_num += xatoul_range(buf_ptr + 1, 0, 255) * 256;
68
69 server->s_in->sin_port = htons(port_num);
70 return xconnect_tcp_v4(server->s_in);
71}
72
73static FILE *ftp_login(ftp_host_info_t *server)
74{
75 FILE *control_stream;
76 char buf[512];
77
78 /* Connect to the command socket */
79 control_stream = fdopen(xconnect_tcp_v4(server->s_in), "r+");
80 if (control_stream == NULL) {
81 bb_perror_msg_and_die("cannot open control stream");
82 }
83
84 if (ftpcmd(NULL, NULL, control_stream, buf) != 220) {
85 bb_error_msg_and_die("%s", buf + 4);
86 }
87
88 /* Login to the server */
89 switch (ftpcmd("USER ", server->user, control_stream, buf)) {
90 case 230:
91 break;
92 case 331:
93 if (ftpcmd("PASS ", server->password, control_stream, buf) != 230) {
94 bb_error_msg_and_die("PASS error: %s", buf + 4);
95 }
96 break;
97 default:
98 bb_error_msg_and_die("USER error: %s", buf + 4);
99 }
100
101 ftpcmd("TYPE I", NULL, control_stream, buf);
102
103 return control_stream;
104}
105
106#if !ENABLE_FTPGET
107int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
108 const char *local_path, char *server_path);
109#else
110static
111int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
112 const char *local_path, char *server_path)
113{
114 char buf[512];
115 off_t filesize = 0;
116 int fd_data;
117 int fd_local = -1;
118 off_t beg_range = 0;
119
120 /* Connect to the data socket */
121 if (ftpcmd("PASV", NULL, control_stream, buf) != 227) {
122 bb_error_msg_and_die("PASV error: %s", buf + 4);
123 }
124 fd_data = xconnect_ftpdata(server, buf);
125
126 if (ftpcmd("SIZE ", server_path, control_stream, buf) == 213) {
127 filesize = BB_STRTOOFF(buf + 4, NULL, 10);
128 if (errno || filesize < 0)
129 bb_error_msg_and_die("SIZE error: %s", buf + 4);
130 } else {
131 filesize = -1;
132 do_continue = 0;
133 }
134
135 if ((local_path[0] == '-') && (local_path[1] == '\0')) {
136 fd_local = STDOUT_FILENO;
137 do_continue = 0;
138 }
139
140 if (do_continue) {
141 struct stat sbuf;
142 if (lstat(local_path, &sbuf) < 0) {
143 bb_perror_msg_and_die("lstat");
144 }
145 if (sbuf.st_size > 0) {
146 beg_range = sbuf.st_size;
147 } else {
148 do_continue = 0;
149 }
150 }
151
152 if (do_continue) {
153 sprintf(buf, "REST %"OFF_FMT"d", beg_range);
154 if (ftpcmd(buf, NULL, control_stream, buf) != 350) {
155 do_continue = 0;
156 } else {
157 filesize -= beg_range;
158 }
159 }
160
161 if (ftpcmd("RETR ", server_path, control_stream, buf) > 150) {
162 bb_error_msg_and_die("RETR error: %s", buf + 4);
163 }
164
165 /* only make a local file if we know that one exists on the remote server */
166 if (fd_local == -1) {
167 if (do_continue) {
168 fd_local = xopen(local_path, O_APPEND | O_WRONLY);
169 } else {
170 fd_local = xopen(local_path, O_CREAT | O_TRUNC | O_WRONLY);
171 }
172 }
173
174 /* Copy the file */
175 if (filesize != -1) {
176 if (-1 == bb_copyfd_size(fd_data, fd_local, filesize))
177 exit(EXIT_FAILURE);
178 } else {
179 if (-1 == bb_copyfd_eof(fd_data, fd_local))
180 exit(EXIT_FAILURE);
181 }
182
183 /* close it all down */
184 close(fd_data);
185 if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
186 bb_error_msg_and_die("ftp error: %s", buf + 4);
187 }
188 ftpcmd("QUIT", NULL, control_stream, buf);
189
190 return EXIT_SUCCESS;
191}
192#endif
193
194#if !ENABLE_FTPPUT
195int ftp_send(ftp_host_info_t *server, FILE *control_stream,
196 const char *server_path, char *local_path);
197#else
198static
199int ftp_send(ftp_host_info_t *server, FILE *control_stream,
200 const char *server_path, char *local_path)
201{
202 struct stat sbuf;
203 char buf[512];
204 int fd_data;
205 int fd_local;
206 int response;
207
208 /* Connect to the data socket */
209 if (ftpcmd("PASV", NULL, control_stream, buf) != 227) {
210 bb_error_msg_and_die("PASV error: %s", buf + 4);
211 }
212 fd_data = xconnect_ftpdata(server, buf);
213
214 /* get the local file */
215 if ((local_path[0] == '-') && (local_path[1] == '\0')) {
216 fd_local = STDIN_FILENO;
217 } else {
218 fd_local = xopen(local_path, O_RDONLY);
219 fstat(fd_local, &sbuf);
220
221 sprintf(buf, "ALLO %lu", (unsigned long)sbuf.st_size);
222 response = ftpcmd(buf, NULL, control_stream, buf);
223 switch (response) {
224 case 200:
225 case 202:
226 break;
227 default:
228 close(fd_local);
229 bb_error_msg_and_die("ALLO error: %s", buf + 4);
230 break;
231 }
232 }
233 response = ftpcmd("STOR ", server_path, control_stream, buf);
234 switch (response) {
235 case 125:
236 case 150:
237 break;
238 default:
239 close(fd_local);
240 bb_error_msg_and_die("STOR error: %s", buf + 4);
241 }
242
243 /* transfer the file */
244 if (bb_copyfd_eof(fd_local, fd_data) == -1) {
245 exit(EXIT_FAILURE);
246 }
247
248 /* close it all down */
249 close(fd_data);
250 if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
251 bb_error_msg_and_die("error: %s", buf + 4);
252 }
253 ftpcmd("QUIT", NULL, control_stream, buf);
254
255 return EXIT_SUCCESS;
256}
257#endif
258
259#define FTPGETPUT_OPT_CONTINUE 1
260#define FTPGETPUT_OPT_VERBOSE 2
261#define FTPGETPUT_OPT_USER 4
262#define FTPGETPUT_OPT_PASSWORD 8
263#define FTPGETPUT_OPT_PORT 16
264
265#if ENABLE_FEATURE_FTPGETPUT_LONG_OPTIONS
266static const struct option ftpgetput_long_options[] = {
267 { "continue", 1, NULL, 'c' },
268 { "verbose", 0, NULL, 'v' },
269 { "username", 1, NULL, 'u' },
270 { "password", 1, NULL, 'p' },
271 { "port", 1, NULL, 'P' },
272 { 0, 0, 0, 0 }
273};
274#endif
275
276int ftpgetput_main(int argc, char **argv)
277{
278 /* content-length of the file */
279 unsigned opt;
280 char *port = "ftp";
281
282 /* socket to ftp server */
283 FILE *control_stream;
284 struct sockaddr_in s_in;
285
286 /* continue a prev transfer (-c) */
287 ftp_host_info_t *server;
288
289 int (*ftp_action)(ftp_host_info_t *, FILE *, const char *, char *) = NULL;
290
291 /* Check to see if the command is ftpget or ftput */
292 if (ENABLE_FTPPUT && (!ENABLE_FTPGET || applet_name[3] == 'p')) {
293 ftp_action = ftp_send;
294 }
295 if (ENABLE_FTPGET && (!ENABLE_FTPPUT || applet_name[3] == 'g')) {
296 ftp_action = ftp_receive;
297 }
298
299 /* Set default values */
300 server = xmalloc(sizeof(ftp_host_info_t));
301 server->user = "anonymous";
302 server->password = "busybox@";
303 verbose_flag = 0;
304
305 /*
306 * Decipher the command line
307 */
308#if ENABLE_FEATURE_FTPGETPUT_LONG_OPTIONS
309 applet_long_options = ftpgetput_long_options;
310#endif
311 opt = getopt32(argc, argv, "cvu:p:P:", &server->user, &server->password, &port);
312
313 /* Process the non-option command line arguments */
314 if (argc - optind != 3) {
315 bb_show_usage();
316 }
317
318 if (opt & FTPGETPUT_OPT_CONTINUE) {
319 do_continue = 1;
320 }
321 if (opt & FTPGETPUT_OPT_VERBOSE) {
322 verbose_flag = 1;
323 }
324
325 /* We want to do exactly _one_ DNS lookup, since some
326 * sites (i.e. ftp.us.debian.org) use round-robin DNS
327 * and we want to connect to only one IP... */
328 server->s_in = &s_in;
329 bb_lookup_host(&s_in, argv[optind]);
330 s_in.sin_port = bb_lookup_port(port, "tcp", 21);
331 if (verbose_flag) {
332 printf("Connecting to %s[%s]:%d\n",
333 argv[optind], inet_ntoa(s_in.sin_addr), ntohs(s_in.sin_port));
334 }
335
336 /* Connect/Setup/Configure the FTP session */
337 control_stream = ftp_login(server);
338
339 return ftp_action(server, control_stream, argv[optind + 1], argv[optind + 2]);
340}