mirror of
https://github.com/sheumann/hush.git
synced 2024-12-27 16:31:24 +00:00
ftpgetput: deal with long-standing TODOs:
- do not use ALLO on upload - move globals to "struct globals" - move buf[] there too - remove commented out "filesize" code - other shrinkage function old new delta xconnect_ftpdata 117 127 +10 ftp_die 49 59 +10 ftpcmd 292 301 +9 verbose_flag 1 - -1 do_continue 1 - -1 ftpgetput_main 405 352 -53 ftp_receive 451 394 -57 ftp_send 325 185 -140 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 3/3 up/down: 29/-252) Total: -223 bytes
This commit is contained in:
Denis Vlasenko
parent
6c615a6c07
commit
0e7940ae90
@ -15,28 +15,43 @@
|
||||
|
||||
#include "libbb.h"
|
||||
|
||||
typedef struct ftp_host_info_s {
|
||||
struct globals {
|
||||
const char *user;
|
||||
const char *password;
|
||||
struct len_and_sockaddr *lsa;
|
||||
} ftp_host_info_t;
|
||||
int verbose_flag;
|
||||
int do_continue;
|
||||
char buf[1]; /* actually [BUF_SIZE] */
|
||||
};
|
||||
#define G (*(struct globals*)&bb_common_bufsiz1)
|
||||
enum { BUFSZ = COMMON_BUFSIZE - offsetof(struct globals, buf) };
|
||||
struct BUG_G_too_big {
|
||||
char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
|
||||
};
|
||||
#define user (G.user )
|
||||
#define password (G.password )
|
||||
#define lsa (G.lsa )
|
||||
#define verbose_flag (G.verbose_flag)
|
||||
#define do_continue (G.do_continue )
|
||||
#define buf (G.buf )
|
||||
#define INIT_G() do { \
|
||||
} while (0)
|
||||
|
||||
static smallint verbose_flag;
|
||||
static smallint do_continue;
|
||||
|
||||
static void ftp_die(const char *msg, const char *remote) ATTRIBUTE_NORETURN;
|
||||
static void ftp_die(const char *msg, const char *remote)
|
||||
static void ftp_die(const char *msg) ATTRIBUTE_NORETURN;
|
||||
static void ftp_die(const char *msg)
|
||||
{
|
||||
const char *cp = buf; /* buf holds peer's response */
|
||||
|
||||
/* Guard against garbage from remote server */
|
||||
const char *cp = remote;
|
||||
while (*cp >= ' ' && *cp < '\x7f') cp++;
|
||||
while (*cp >= ' ' && *cp < '\x7f')
|
||||
cp++;
|
||||
bb_error_msg_and_die("unexpected server response%s%s: %.*s",
|
||||
msg ? " to " : "", msg ? msg : "",
|
||||
(int)(cp - remote), remote);
|
||||
(int)(cp - buf), buf);
|
||||
}
|
||||
|
||||
|
||||
static int ftpcmd(const char *s1, const char *s2, FILE *stream, char *buf)
|
||||
static int ftpcmd(const char *s1, const char *s2, FILE *stream)
|
||||
{
|
||||
unsigned n;
|
||||
if (verbose_flag) {
|
||||
@ -44,16 +59,13 @@ static int ftpcmd(const char *s1, const char *s2, FILE *stream, char *buf)
|
||||
}
|
||||
|
||||
if (s1) {
|
||||
if (s2) {
|
||||
fprintf(stream, "%s %s\r\n", s1, s2);
|
||||
} else {
|
||||
fprintf(stream, "%s\r\n", s1);
|
||||
}
|
||||
fprintf(stream, (s2 ? "%s %s\r\n" : "%s %s\r\n"+3), s1, s2);
|
||||
}
|
||||
|
||||
do {
|
||||
char *buf_ptr;
|
||||
|
||||
if (fgets(buf, 510, stream) == NULL) {
|
||||
if (fgets(buf, BUFSZ - 2, stream) == NULL) {
|
||||
bb_perror_msg_and_die("fgets");
|
||||
}
|
||||
buf_ptr = strstr(buf, "\r\n");
|
||||
@ -68,41 +80,40 @@ static int ftpcmd(const char *s1, const char *s2, FILE *stream, char *buf)
|
||||
return n;
|
||||
}
|
||||
|
||||
static FILE *ftp_login(ftp_host_info_t *server)
|
||||
static FILE *ftp_login(void)
|
||||
{
|
||||
FILE *control_stream;
|
||||
char buf[512];
|
||||
|
||||
/* Connect to the command socket */
|
||||
control_stream = fdopen(xconnect_stream(server->lsa), "r+");
|
||||
control_stream = fdopen(xconnect_stream(lsa), "r+");
|
||||
if (control_stream == NULL) {
|
||||
/* fdopen failed - extremely unlikely */
|
||||
bb_perror_nomsg_and_die();
|
||||
}
|
||||
|
||||
if (ftpcmd(NULL, NULL, control_stream, buf) != 220) {
|
||||
ftp_die(NULL, buf);
|
||||
if (ftpcmd(NULL, NULL, control_stream) != 220) {
|
||||
ftp_die(NULL);
|
||||
}
|
||||
|
||||
/* Login to the server */
|
||||
switch (ftpcmd("USER", server->user, control_stream, buf)) {
|
||||
switch (ftpcmd("USER", user, control_stream)) {
|
||||
case 230:
|
||||
break;
|
||||
case 331:
|
||||
if (ftpcmd("PASS", server->password, control_stream, buf) != 230) {
|
||||
ftp_die("PASS", buf);
|
||||
if (ftpcmd("PASS", password, control_stream) != 230) {
|
||||
ftp_die("PASS");
|
||||
}
|
||||
break;
|
||||
default:
|
||||
ftp_die("USER", buf);
|
||||
ftp_die("USER");
|
||||
}
|
||||
|
||||
ftpcmd("TYPE I", NULL, control_stream, buf);
|
||||
ftpcmd("TYPE I", NULL, control_stream);
|
||||
|
||||
return control_stream;
|
||||
}
|
||||
|
||||
static int xconnect_ftpdata(ftp_host_info_t *server, char *buf)
|
||||
static int xconnect_ftpdata(void)
|
||||
{
|
||||
char *buf_ptr;
|
||||
unsigned port_num;
|
||||
@ -121,21 +132,18 @@ static int xconnect_ftpdata(ftp_host_info_t *server, char *buf)
|
||||
*buf_ptr = '\0';
|
||||
port_num += xatoul_range(buf_ptr + 1, 0, 255) * 256;
|
||||
|
||||
set_nport(server->lsa, htons(port_num));
|
||||
return xconnect_stream(server->lsa);
|
||||
set_nport(lsa, htons(port_num));
|
||||
return xconnect_stream(lsa);
|
||||
}
|
||||
|
||||
#if !ENABLE_FTPGET
|
||||
int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
|
||||
int ftp_receive(FILE *control_stream,
|
||||
const char *local_path, char *server_path);
|
||||
#else
|
||||
static
|
||||
int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
|
||||
int ftp_receive(FILE *control_stream,
|
||||
const char *local_path, char *server_path)
|
||||
{
|
||||
char buf[512];
|
||||
/* 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 = -1;
|
||||
@ -160,16 +168,12 @@ response).
|
||||
*/
|
||||
|
||||
/* connect to the data socket */
|
||||
if (ftpcmd("PASV", NULL, control_stream, buf) != 227) {
|
||||
ftp_die("PASV", buf);
|
||||
if (ftpcmd("PASV", NULL, control_stream) != 227) {
|
||||
ftp_die("PASV");
|
||||
}
|
||||
fd_data = xconnect_ftpdata(server, buf);
|
||||
fd_data = xconnect_ftpdata();
|
||||
|
||||
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 {
|
||||
if (ftpcmd("SIZE", server_path, control_stream) != 213) {
|
||||
do_continue = 0;
|
||||
}
|
||||
|
||||
@ -193,16 +197,13 @@ response).
|
||||
|
||||
if (do_continue) {
|
||||
sprintf(buf, "REST %"OFF_FMT"d", beg_range);
|
||||
if (ftpcmd(buf, NULL, control_stream, buf) != 350) {
|
||||
if (ftpcmd(buf, NULL, control_stream) != 350) {
|
||||
do_continue = 0;
|
||||
} else {
|
||||
//if (filesize != -1)
|
||||
// filesize -= beg_range;
|
||||
}
|
||||
}
|
||||
|
||||
if (ftpcmd("RETR", server_path, control_stream, buf) > 150) {
|
||||
ftp_die("RETR", buf);
|
||||
if (ftpcmd("RETR", server_path, control_stream) > 150) {
|
||||
ftp_die("RETR");
|
||||
}
|
||||
|
||||
/* make local _after_ we know that remote file exists */
|
||||
@ -216,76 +217,52 @@ response).
|
||||
// TODO: merge tail of ftp_receive and ftp_send starting from here
|
||||
|
||||
/* copy the file */
|
||||
if (filesize != -1) { // NEVER HAPPENS, filesize is always -1
|
||||
if (bb_copyfd_size(fd_data, fd_local, filesize) == -1)
|
||||
return EXIT_FAILURE;
|
||||
} else {
|
||||
if (bb_copyfd_eof(fd_data, fd_local) == -1) {
|
||||
/* error msg is already printed by bb_copyfd_eof */
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
if (bb_copyfd_eof(fd_data, fd_local) == -1) {
|
||||
/* error msg is already printed by bb_copyfd_eof */
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
/* close it all down */
|
||||
close(fd_data);
|
||||
if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
|
||||
ftp_die(NULL, buf);
|
||||
if (ftpcmd(NULL, NULL, control_stream) != 226) {
|
||||
ftp_die(NULL);
|
||||
}
|
||||
ftpcmd("QUIT", NULL, control_stream, buf);
|
||||
ftpcmd("QUIT", NULL, control_stream);
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if !ENABLE_FTPPUT
|
||||
int ftp_send(ftp_host_info_t *server, FILE *control_stream,
|
||||
int ftp_send(FILE *control_stream,
|
||||
const char *server_path, char *local_path);
|
||||
#else
|
||||
static
|
||||
int ftp_send(ftp_host_info_t *server, FILE *control_stream,
|
||||
int ftp_send(FILE *control_stream,
|
||||
const char *server_path, char *local_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) {
|
||||
ftp_die("PASV", buf);
|
||||
if (ftpcmd("PASV", NULL, control_stream) != 227) {
|
||||
ftp_die("PASV");
|
||||
}
|
||||
fd_data = xconnect_ftpdata(server, buf);
|
||||
fd_data = xconnect_ftpdata();
|
||||
|
||||
/* get the local file */
|
||||
fd_local = STDIN_FILENO;
|
||||
if (NOT_LONE_DASH(local_path)) {
|
||||
if (NOT_LONE_DASH(local_path))
|
||||
fd_local = xopen(local_path, O_RDONLY);
|
||||
fstat(fd_local, &sbuf);
|
||||
|
||||
// TODO: do we really need to send ALLO? It's ancient...
|
||||
// Doesn't it break "ftpput .. .. fifo" too?
|
||||
|
||||
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); // TODO: why bother?
|
||||
ftp_die("ALLO", buf);
|
||||
break;
|
||||
}
|
||||
}
|
||||
response = ftpcmd("STOR", server_path, control_stream, buf);
|
||||
response = ftpcmd("STOR", server_path, control_stream);
|
||||
switch (response) {
|
||||
case 125:
|
||||
case 150:
|
||||
break;
|
||||
default:
|
||||
close(fd_local); // TODO: why bother?
|
||||
ftp_die("STOR", buf);
|
||||
ftp_die("STOR");
|
||||
}
|
||||
|
||||
/* transfer the file */
|
||||
@ -296,10 +273,10 @@ int ftp_send(ftp_host_info_t *server, FILE *control_stream,
|
||||
|
||||
/* close it all down */
|
||||
close(fd_data);
|
||||
if (ftpcmd(NULL, NULL, control_stream, buf) != 226) {
|
||||
ftp_die("close", buf);
|
||||
if (ftpcmd(NULL, NULL, control_stream) != 226) {
|
||||
ftp_die("close");
|
||||
}
|
||||
ftpcmd("QUIT", NULL, control_stream, buf);
|
||||
ftpcmd("QUIT", NULL, control_stream);
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@ -324,30 +301,28 @@ static const char ftpgetput_longopts[] ALIGN1 =
|
||||
int ftpgetput_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int ftpgetput_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
||||
{
|
||||
/* content-length of the file */
|
||||
unsigned opt;
|
||||
const char *port = "ftp";
|
||||
/* socket to ftp server */
|
||||
FILE *control_stream;
|
||||
/* continue previous transfer (-c) */
|
||||
ftp_host_info_t *server;
|
||||
|
||||
#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;
|
||||
int (*ftp_action)(FILE *, const char *, char *) = ftp_send;
|
||||
|
||||
/* Check to see if the command is ftpget or ftput */
|
||||
if (applet_name[3] == 'g') {
|
||||
ftp_action = ftp_receive;
|
||||
}
|
||||
#endif
|
||||
|
||||
INIT_G();
|
||||
/* Set default values */
|
||||
server = xmalloc(sizeof(*server));
|
||||
server->user = "anonymous";
|
||||
server->password = "busybox@";
|
||||
user = "anonymous";
|
||||
password = "busybox@";
|
||||
|
||||
/*
|
||||
* Decipher the command line
|
||||
@ -355,29 +330,22 @@ int ftpgetput_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
||||
#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);
|
||||
opt_complementary = "=3:vv:cc"; /* must have 3 params; -v and -c count */
|
||||
opt = getopt32(argv, "cvu:p:P:", &user, &password, &port,
|
||||
&verbose_flag, &do_continue);
|
||||
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;
|
||||
}
|
||||
|
||||
/* 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));
|
||||
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));
|
||||
xmalloc_sockaddr2dotted(&lsa->u.sa));
|
||||
}
|
||||
|
||||
/* Connect/Setup/Configure the FTP session */
|
||||
control_stream = ftp_login(server);
|
||||
control_stream = ftp_login();
|
||||
|
||||
return ftp_action(server, control_stream, argv[1], argv[2]);
|
||||
return ftp_action(control_stream, argv[1], argv[2]);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user