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wget: preparations for ftps:// support (block move, no code changes)

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-02-06 15:02:16 +01:00
parent 98066662aa
commit e999657f6d
1 changed files with 81 additions and 81 deletions
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162
networking/wget.c
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@ -602,87 +602,6 @@ static void reset_beg_range_to_zero(void)
/* ftruncate(G.output_fd, 0); */
}
static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_sockaddr *lsa)
{
FILE *sfp;
char *str;
int port;
if (!target->user)
target->user = xstrdup("anonymous:busybox@");
sfp = open_socket(lsa);
if (ftpcmd(NULL, NULL, sfp) != 220)
bb_error_msg_and_die("%s", sanitize_string(G.wget_buf + 4));
/*
* Splitting username:password pair,
* trying to log in
*/
str = strchr(target->user, ':');
if (str)
*str++ = '\0';
switch (ftpcmd("USER ", target->user, sfp)) {
case 230:
break;
case 331:
if (ftpcmd("PASS ", str, sfp) == 230)
break;
/* fall through (failed login) */
default:
bb_error_msg_and_die("ftp login: %s", sanitize_string(G.wget_buf + 4));
}
ftpcmd("TYPE I", NULL, sfp);
/*
* Querying file size
*/
if (ftpcmd("SIZE ", target->path, sfp) == 213) {
G.content_len = BB_STRTOOFF(G.wget_buf + 4, NULL, 10);
if (G.content_len < 0 || errno) {
bb_error_msg_and_die("SIZE value is garbage");
}
G.got_clen = 1;
}
/*
* Entering passive mode
*/
if (ftpcmd("PASV", NULL, sfp) != 227) {
pasv_error:
bb_error_msg_and_die("bad response to %s: %s", "PASV", sanitize_string(G.wget_buf));
}
// Response is "227 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
str = strrchr(G.wget_buf, ')');
if (str) str[0] = '\0';
str = strrchr(G.wget_buf, ',');
if (!str) goto pasv_error;
port = xatou_range(str+1, 0, 255);
*str = '\0';
str = strrchr(G.wget_buf, ',');
if (!str) goto pasv_error;
port += xatou_range(str+1, 0, 255) * 256;
set_nport(&lsa->u.sa, htons(port));
*dfpp = open_socket(lsa);
if (G.beg_range != 0) {
sprintf(G.wget_buf, "REST %"OFF_FMT"u", G.beg_range);
if (ftpcmd(G.wget_buf, NULL, sfp) == 350)
G.content_len -= G.beg_range;
else
reset_beg_range_to_zero();
}
if (ftpcmd("RETR ", target->path, sfp) > 150)
bb_error_msg_and_die("bad response to %s: %s", "RETR", sanitize_string(G.wget_buf));
return sfp;
}
#if ENABLE_FEATURE_WGET_OPENSSL
static int spawn_https_helper_openssl(const char *host, unsigned port)
{
@ -808,6 +727,87 @@ static void spawn_ssl_client(const char *host, int network_fd)
}
#endif
static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_sockaddr *lsa)
{
FILE *sfp;
char *str;
int port;
if (!target->user)
target->user = xstrdup("anonymous:busybox@");
sfp = open_socket(lsa);
if (ftpcmd(NULL, NULL, sfp) != 220)
bb_error_msg_and_die("%s", sanitize_string(G.wget_buf + 4));
/*
* Splitting username:password pair,
* trying to log in
*/
str = strchr(target->user, ':');
if (str)
*str++ = '\0';
switch (ftpcmd("USER ", target->user, sfp)) {
case 230:
break;
case 331:
if (ftpcmd("PASS ", str, sfp) == 230)
break;
/* fall through (failed login) */
default:
bb_error_msg_and_die("ftp login: %s", sanitize_string(G.wget_buf + 4));
}
ftpcmd("TYPE I", NULL, sfp);
/*
* Querying file size
*/
if (ftpcmd("SIZE ", target->path, sfp) == 213) {
G.content_len = BB_STRTOOFF(G.wget_buf + 4, NULL, 10);
if (G.content_len < 0 || errno) {
bb_error_msg_and_die("SIZE value is garbage");
}
G.got_clen = 1;
}
/*
* Entering passive mode
*/
if (ftpcmd("PASV", NULL, sfp) != 227) {
pasv_error:
bb_error_msg_and_die("bad response to %s: %s", "PASV", sanitize_string(G.wget_buf));
}
// Response is "227 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
str = strrchr(G.wget_buf, ')');
if (str) str[0] = '\0';
str = strrchr(G.wget_buf, ',');
if (!str) goto pasv_error;
port = xatou_range(str+1, 0, 255);
*str = '\0';
str = strrchr(G.wget_buf, ',');
if (!str) goto pasv_error;
port += xatou_range(str+1, 0, 255) * 256;
set_nport(&lsa->u.sa, htons(port));
*dfpp = open_socket(lsa);
if (G.beg_range != 0) {
sprintf(G.wget_buf, "REST %"OFF_FMT"u", G.beg_range);
if (ftpcmd(G.wget_buf, NULL, sfp) == 350)
G.content_len -= G.beg_range;
else
reset_beg_range_to_zero();
}
if (ftpcmd("RETR ", target->path, sfp) > 150)
bb_error_msg_and_die("bad response to %s: %s", "RETR", sanitize_string(G.wget_buf));
return sfp;
}
static void NOINLINE retrieve_file_data(FILE *dfp)
{
#if ENABLE_FEATURE_WGET_STATUSBAR || ENABLE_FEATURE_WGET_TIMEOUT