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Diffstat (limited to 'external/libcurl_android/jni/libcurl/lib/ftp.c')
-rwxr-xr-xexternal/libcurl_android/jni/libcurl/lib/ftp.c4585
1 files changed, 0 insertions, 4585 deletions
diff --git a/external/libcurl_android/jni/libcurl/lib/ftp.c b/external/libcurl_android/jni/libcurl/lib/ftp.c
deleted file mode 100755
index 715afc2f..00000000
--- a/external/libcurl_android/jni/libcurl/lib/ftp.c
+++ /dev/null
@@ -1,4585 +0,0 @@
-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#ifndef CURL_DISABLE_FTP
-
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#ifdef HAVE_UTSNAME_H
-#include <sys/utsname.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#ifdef __VMS
-#include <in.h>
-#include <inet.h>
-#endif
-
-#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
-#undef in_addr_t
-#define in_addr_t unsigned long
-#endif
-
-#include <curl/curl.h>
-#include "urldata.h"
-#include "sendf.h"
-#include "if2ip.h"
-#include "hostip.h"
-#include "progress.h"
-#include "transfer.h"
-#include "escape.h"
-#include "http.h" /* for HTTP proxy tunnel stuff */
-#include "socks.h"
-#include "ftp.h"
-#include "fileinfo.h"
-#include "ftplistparser.h"
-#include "curl_sec.h"
-#include "strtoofft.h"
-#include "strequal.h"
-#include "vtls/vtls.h"
-#include "connect.h"
-#include "strerror.h"
-#include "inet_ntop.h"
-#include "inet_pton.h"
-#include "select.h"
-#include "parsedate.h" /* for the week day and month names */
-#include "sockaddr.h" /* required for Curl_sockaddr_storage */
-#include "multiif.h"
-#include "url.h"
-#include "rawstr.h"
-#include "speedcheck.h"
-#include "warnless.h"
-#include "http_proxy.h"
-#include "non-ascii.h"
-
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
-#include "curl_memory.h"
-/* The last #include file should be: */
-#include "memdebug.h"
-
-#ifndef NI_MAXHOST
-#define NI_MAXHOST 1025
-#endif
-#ifndef INET_ADDRSTRLEN
-#define INET_ADDRSTRLEN 16
-#endif
-
-#ifdef CURL_DISABLE_VERBOSE_STRINGS
-#define ftp_pasv_verbose(a,b,c,d) Curl_nop_stmt
-#endif
-
-/* Local API functions */
-#ifndef DEBUGBUILD
-static void _state(struct connectdata *conn,
- ftpstate newstate);
-#define state(x,y) _state(x,y)
-#else
-static void _state(struct connectdata *conn,
- ftpstate newstate,
- int lineno);
-#define state(x,y) _state(x,y,__LINE__)
-#endif
-
-static CURLcode ftp_sendquote(struct connectdata *conn,
- struct curl_slist *quote);
-static CURLcode ftp_quit(struct connectdata *conn);
-static CURLcode ftp_parse_url_path(struct connectdata *conn);
-static CURLcode ftp_regular_transfer(struct connectdata *conn, bool *done);
-#ifndef CURL_DISABLE_VERBOSE_STRINGS
-static void ftp_pasv_verbose(struct connectdata *conn,
- Curl_addrinfo *ai,
- char *newhost, /* ascii version */
- int port);
-#endif
-static CURLcode ftp_state_prepare_transfer(struct connectdata *conn);
-static CURLcode ftp_state_mdtm(struct connectdata *conn);
-static CURLcode ftp_state_quote(struct connectdata *conn,
- bool init, ftpstate instate);
-static CURLcode ftp_nb_type(struct connectdata *conn,
- bool ascii, ftpstate newstate);
-static int ftp_need_type(struct connectdata *conn,
- bool ascii);
-static CURLcode ftp_do(struct connectdata *conn, bool *done);
-static CURLcode ftp_done(struct connectdata *conn,
- CURLcode, bool premature);
-static CURLcode ftp_connect(struct connectdata *conn, bool *done);
-static CURLcode ftp_disconnect(struct connectdata *conn, bool dead_connection);
-static CURLcode ftp_do_more(struct connectdata *conn, int *completed);
-static CURLcode ftp_multi_statemach(struct connectdata *conn, bool *done);
-static int ftp_getsock(struct connectdata *conn, curl_socket_t *socks,
- int numsocks);
-static int ftp_domore_getsock(struct connectdata *conn, curl_socket_t *socks,
- int numsocks);
-static CURLcode ftp_doing(struct connectdata *conn,
- bool *dophase_done);
-static CURLcode ftp_setup_connection(struct connectdata * conn);
-
-static CURLcode init_wc_data(struct connectdata *conn);
-static CURLcode wc_statemach(struct connectdata *conn);
-
-static void wc_data_dtor(void *ptr);
-
-static CURLcode ftp_state_retr(struct connectdata *conn, curl_off_t filesize);
-
-static CURLcode ftp_readresp(curl_socket_t sockfd,
- struct pingpong *pp,
- int *ftpcode,
- size_t *size);
-static CURLcode ftp_dophase_done(struct connectdata *conn,
- bool connected);
-
-/* easy-to-use macro: */
-#define PPSENDF(x,y,z) if((result = Curl_pp_sendf(x,y,z)) != CURLE_OK) \
- return result
-
-
-/*
- * FTP protocol handler.
- */
-
-const struct Curl_handler Curl_handler_ftp = {
- "FTP", /* scheme */
- ftp_setup_connection, /* setup_connection */
- ftp_do, /* do_it */
- ftp_done, /* done */
- ftp_do_more, /* do_more */
- ftp_connect, /* connect_it */
- ftp_multi_statemach, /* connecting */
- ftp_doing, /* doing */
- ftp_getsock, /* proto_getsock */
- ftp_getsock, /* doing_getsock */
- ftp_domore_getsock, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- ftp_disconnect, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_FTP, /* defport */
- CURLPROTO_FTP, /* protocol */
- PROTOPT_DUAL | PROTOPT_CLOSEACTION | PROTOPT_NEEDSPWD
- | PROTOPT_NOURLQUERY /* flags */
-};
-
-
-#ifdef USE_SSL
-/*
- * FTPS protocol handler.
- */
-
-const struct Curl_handler Curl_handler_ftps = {
- "FTPS", /* scheme */
- ftp_setup_connection, /* setup_connection */
- ftp_do, /* do_it */
- ftp_done, /* done */
- ftp_do_more, /* do_more */
- ftp_connect, /* connect_it */
- ftp_multi_statemach, /* connecting */
- ftp_doing, /* doing */
- ftp_getsock, /* proto_getsock */
- ftp_getsock, /* doing_getsock */
- ftp_domore_getsock, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- ftp_disconnect, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_FTPS, /* defport */
- CURLPROTO_FTPS, /* protocol */
- PROTOPT_SSL | PROTOPT_DUAL | PROTOPT_CLOSEACTION |
- PROTOPT_NEEDSPWD | PROTOPT_NOURLQUERY /* flags */
-};
-#endif
-
-#ifndef CURL_DISABLE_HTTP
-/*
- * HTTP-proxyed FTP protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_ftp_proxy = {
- "FTP", /* scheme */
- Curl_http_setup_conn, /* setup_connection */
- Curl_http, /* do_it */
- Curl_http_done, /* done */
- ZERO_NULL, /* do_more */
- ZERO_NULL, /* connect_it */
- ZERO_NULL, /* connecting */
- ZERO_NULL, /* doing */
- ZERO_NULL, /* proto_getsock */
- ZERO_NULL, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- ZERO_NULL, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_FTP, /* defport */
- CURLPROTO_HTTP, /* protocol */
- PROTOPT_NONE /* flags */
-};
-
-
-#ifdef USE_SSL
-/*
- * HTTP-proxyed FTPS protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_ftps_proxy = {
- "FTPS", /* scheme */
- Curl_http_setup_conn, /* setup_connection */
- Curl_http, /* do_it */
- Curl_http_done, /* done */
- ZERO_NULL, /* do_more */
- ZERO_NULL, /* connect_it */
- ZERO_NULL, /* connecting */
- ZERO_NULL, /* doing */
- ZERO_NULL, /* proto_getsock */
- ZERO_NULL, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- ZERO_NULL, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_FTPS, /* defport */
- CURLPROTO_HTTP, /* protocol */
- PROTOPT_NONE /* flags */
-};
-#endif
-#endif
-
-
-/*
- * NOTE: back in the old days, we added code in the FTP code that made NOBODY
- * requests on files respond with headers passed to the client/stdout that
- * looked like HTTP ones.
- *
- * This approach is not very elegant, it causes confusion and is error-prone.
- * It is subject for removal at the next (or at least a future) soname bump.
- * Until then you can test the effects of the removal by undefining the
- * following define named CURL_FTP_HTTPSTYLE_HEAD.
- */
-#define CURL_FTP_HTTPSTYLE_HEAD 1
-
-static void freedirs(struct ftp_conn *ftpc)
-{
- int i;
- if(ftpc->dirs) {
- for(i=0; i < ftpc->dirdepth; i++) {
- if(ftpc->dirs[i]) {
- free(ftpc->dirs[i]);
- ftpc->dirs[i]=NULL;
- }
- }
- free(ftpc->dirs);
- ftpc->dirs = NULL;
- ftpc->dirdepth = 0;
- }
- if(ftpc->file) {
- free(ftpc->file);
- ftpc->file = NULL;
- }
-}
-
-/* Returns non-zero if the given string contains CR (\r) or LF (\n),
- which are not allowed within RFC 959 <string>.
- Note: The input string is in the client's encoding which might
- not be ASCII, so escape sequences \r & \n must be used instead
- of hex values 0x0d & 0x0a.
-*/
-static bool isBadFtpString(const char *string)
-{
- return ((NULL != strchr(string, '\r')) ||
- (NULL != strchr(string, '\n'))) ? TRUE : FALSE;
-}
-
-/***********************************************************************
- *
- * AcceptServerConnect()
- *
- * After connection request is received from the server this function is
- * called to accept the connection and close the listening socket
- *
- */
-static CURLcode AcceptServerConnect(struct connectdata *conn)
-{
- struct SessionHandle *data = conn->data;
- curl_socket_t sock = conn->sock[SECONDARYSOCKET];
- curl_socket_t s = CURL_SOCKET_BAD;
-#ifdef ENABLE_IPV6
- struct Curl_sockaddr_storage add;
-#else
- struct sockaddr_in add;
-#endif
- curl_socklen_t size = (curl_socklen_t) sizeof(add);
-
- if(0 == getsockname(sock, (struct sockaddr *) &add, &size)) {
- size = sizeof(add);
-
- s=accept(sock, (struct sockaddr *) &add, &size);
- }
- Curl_closesocket(conn, sock); /* close the first socket */
-
- if(CURL_SOCKET_BAD == s) {
- failf(data, "Error accept()ing server connect");
- return CURLE_FTP_PORT_FAILED;
- }
- infof(data, "Connection accepted from server\n");
-
- conn->sock[SECONDARYSOCKET] = s;
- curlx_nonblock(s, TRUE); /* enable non-blocking */
- conn->sock_accepted[SECONDARYSOCKET] = TRUE;
-
- if(data->set.fsockopt) {
- int error = 0;
-
- /* activate callback for setting socket options */
- error = data->set.fsockopt(data->set.sockopt_client,
- s,
- CURLSOCKTYPE_ACCEPT);
-
- if(error) {
- Curl_closesocket(conn, s); /* close the socket and bail out */
- conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
- return CURLE_ABORTED_BY_CALLBACK;
- }
- }
-
- return CURLE_OK;
-
-}
-
-/*
- * ftp_timeleft_accept() returns the amount of milliseconds left allowed for
- * waiting server to connect. If the value is negative, the timeout time has
- * already elapsed.
- *
- * The start time is stored in progress.t_acceptdata - as set with
- * Curl_pgrsTime(..., TIMER_STARTACCEPT);
- *
- */
-static long ftp_timeleft_accept(struct SessionHandle *data)
-{
- long timeout_ms = DEFAULT_ACCEPT_TIMEOUT;
- long other;
- struct timeval now;
-
- if(data->set.accepttimeout > 0)
- timeout_ms = data->set.accepttimeout;
-
- now = Curl_tvnow();
-
- /* check if the generic timeout possibly is set shorter */
- other = Curl_timeleft(data, &now, FALSE);
- if(other && (other < timeout_ms))
- /* note that this also works fine for when other happens to be negative
- due to it already having elapsed */
- timeout_ms = other;
- else {
- /* subtract elapsed time */
- timeout_ms -= Curl_tvdiff(now, data->progress.t_acceptdata);
- if(!timeout_ms)
- /* avoid returning 0 as that means no timeout! */
- return -1;
- }
-
- return timeout_ms;
-}
-
-
-/***********************************************************************
- *
- * ReceivedServerConnect()
- *
- * After allowing server to connect to us from data port, this function
- * checks both data connection for connection establishment and ctrl
- * connection for a negative response regarding a failure in connecting
- *
- */
-static CURLcode ReceivedServerConnect(struct connectdata *conn, bool *received)
-{
- struct SessionHandle *data = conn->data;
- curl_socket_t ctrl_sock = conn->sock[FIRSTSOCKET];
- curl_socket_t data_sock = conn->sock[SECONDARYSOCKET];
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
- int result;
- long timeout_ms;
- ssize_t nread;
- int ftpcode;
-
- *received = FALSE;
-
- timeout_ms = ftp_timeleft_accept(data);
- infof(data, "Checking for server connect\n");
- if(timeout_ms < 0) {
- /* if a timeout was already reached, bail out */
- failf(data, "Accept timeout occurred while waiting server connect");
- return CURLE_FTP_ACCEPT_TIMEOUT;
- }
-
- /* First check whether there is a cached response from server */
- if(pp->cache_size && pp->cache && pp->cache[0] > '3') {
- /* Data connection could not be established, let's return */
- infof(data, "There is negative response in cache while serv connect\n");
- Curl_GetFTPResponse(&nread, conn, &ftpcode);
- return CURLE_FTP_ACCEPT_FAILED;
- }
-
- result = Curl_socket_check(ctrl_sock, data_sock, CURL_SOCKET_BAD, 0);
-
- /* see if the connection request is already here */
- switch (result) {
- case -1: /* error */
- /* let's die here */
- failf(data, "Error while waiting for server connect");
- return CURLE_FTP_ACCEPT_FAILED;
- case 0: /* Server connect is not received yet */
- break; /* loop */
- default:
-
- if(result & CURL_CSELECT_IN2) {
- infof(data, "Ready to accept data connection from server\n");
- *received = TRUE;
- }
- else if(result & CURL_CSELECT_IN) {
- infof(data, "Ctrl conn has data while waiting for data conn\n");
- Curl_GetFTPResponse(&nread, conn, &ftpcode);
-
- if(ftpcode/100 > 3)
- return CURLE_FTP_ACCEPT_FAILED;
-
- return CURLE_FTP_WEIRD_SERVER_REPLY;
- }
-
- break;
- } /* switch() */
-
- return CURLE_OK;
-}
-
-
-/***********************************************************************
- *
- * InitiateTransfer()
- *
- * After connection from server is accepted this function is called to
- * setup transfer parameters and initiate the data transfer.
- *
- */
-static CURLcode InitiateTransfer(struct connectdata *conn)
-{
- struct SessionHandle *data = conn->data;
- struct FTP *ftp = data->req.protop;
- CURLcode result = CURLE_OK;
-
- if(conn->ssl[SECONDARYSOCKET].use) {
- /* since we only have a plaintext TCP connection here, we must now
- * do the TLS stuff */
- infof(data, "Doing the SSL/TLS handshake on the data stream\n");
- result = Curl_ssl_connect(conn, SECONDARYSOCKET);
- if(result)
- return result;
- }
-
- if(conn->proto.ftpc.state_saved == FTP_STOR) {
- *(ftp->bytecountp)=0;
-
- /* When we know we're uploading a specified file, we can get the file
- size prior to the actual upload. */
-
- Curl_pgrsSetUploadSize(data, data->state.infilesize);
-
- /* set the SO_SNDBUF for the secondary socket for those who need it */
- Curl_sndbufset(conn->sock[SECONDARYSOCKET]);
-
- Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
- SECONDARYSOCKET, ftp->bytecountp);
- }
- else {
- /* FTP download: */
- Curl_setup_transfer(conn, SECONDARYSOCKET,
- conn->proto.ftpc.retr_size_saved, FALSE,
- ftp->bytecountp, -1, NULL); /* no upload here */
- }
-
- conn->proto.ftpc.pp.pending_resp = TRUE; /* expect server response */
- state(conn, FTP_STOP);
-
- return CURLE_OK;
-}
-
-/***********************************************************************
- *
- * AllowServerConnect()
- *
- * When we've issue the PORT command, we have told the server to connect to
- * us. This function checks whether data connection is established if so it is
- * accepted.
- *
- */
-static CURLcode AllowServerConnect(struct connectdata *conn, bool *connected)
-{
- struct SessionHandle *data = conn->data;
- long timeout_ms;
- CURLcode ret = CURLE_OK;
-
- *connected = FALSE;
- infof(data, "Preparing for accepting server on data port\n");
-
- /* Save the time we start accepting server connect */
- Curl_pgrsTime(data, TIMER_STARTACCEPT);
-
- timeout_ms = ftp_timeleft_accept(data);
- if(timeout_ms < 0) {
- /* if a timeout was already reached, bail out */
- failf(data, "Accept timeout occurred while waiting server connect");
- return CURLE_FTP_ACCEPT_TIMEOUT;
- }
-
- /* see if the connection request is already here */
- ret = ReceivedServerConnect(conn, connected);
- if(ret)
- return ret;
-
- if(*connected) {
- ret = AcceptServerConnect(conn);
- if(ret)
- return ret;
-
- ret = InitiateTransfer(conn);
- if(ret)
- return ret;
- }
- else {
- /* Add timeout to multi handle and break out of the loop */
- if(ret == CURLE_OK && *connected == FALSE) {
- if(data->set.accepttimeout > 0)
- Curl_expire(data, data->set.accepttimeout);
- else
- Curl_expire(data, DEFAULT_ACCEPT_TIMEOUT);
- }
- }
-
- return ret;
-}
-
-/* macro to check for a three-digit ftp status code at the start of the
- given string */
-#define STATUSCODE(line) (ISDIGIT(line[0]) && ISDIGIT(line[1]) && \
- ISDIGIT(line[2]))
-
-/* macro to check for the last line in an FTP server response */
-#define LASTLINE(line) (STATUSCODE(line) && (' ' == line[3]))
-
-static bool ftp_endofresp(struct connectdata *conn, char *line, size_t len,
- int *code)
-{
- (void)conn;
-
- if((len > 3) && LASTLINE(line)) {
- *code = curlx_sltosi(strtol(line, NULL, 10));
- return TRUE;
- }
-
- return FALSE;
-}
-
-static CURLcode ftp_readresp(curl_socket_t sockfd,
- struct pingpong *pp,
- int *ftpcode, /* return the ftp-code if done */
- size_t *size) /* size of the response */
-{
- struct connectdata *conn = pp->conn;
- struct SessionHandle *data = conn->data;
-#ifdef HAVE_GSSAPI
- char * const buf = data->state.buffer;
-#endif
- CURLcode result = CURLE_OK;
- int code;
-
- result = Curl_pp_readresp(sockfd, pp, &code, size);
-
-#if defined(HAVE_GSSAPI)
- /* handle the security-oriented responses 6xx ***/
- /* FIXME: some errorchecking perhaps... ***/
- switch(code) {
- case 631:
- code = Curl_sec_read_msg(conn, buf, PROT_SAFE);
- break;
- case 632:
- code = Curl_sec_read_msg(conn, buf, PROT_PRIVATE);
- break;
- case 633:
- code = Curl_sec_read_msg(conn, buf, PROT_CONFIDENTIAL);
- break;
- default:
- /* normal ftp stuff we pass through! */
- break;
- }
-#endif
-
- /* store the latest code for later retrieval */
- data->info.httpcode=code;
-
- if(ftpcode)
- *ftpcode = code;
-
- if(421 == code) {
- /* 421 means "Service not available, closing control connection." and FTP
- * servers use it to signal that idle session timeout has been exceeded.
- * If we ignored the response, it could end up hanging in some cases.
- *
- * This response code can come at any point so having it treated
- * generically is a good idea.
- */
- infof(data, "We got a 421 - timeout!\n");
- state(conn, FTP_STOP);
- return CURLE_OPERATION_TIMEDOUT;
- }
-
- return result;
-}
-
-/* --- parse FTP server responses --- */
-
-/*
- * Curl_GetFTPResponse() is a BLOCKING function to read the full response
- * from a server after a command.
- *
- */
-
-CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
- struct connectdata *conn,
- int *ftpcode) /* return the ftp-code */
-{
- /*
- * We cannot read just one byte per read() and then go back to select() as
- * the OpenSSL read() doesn't grok that properly.
- *
- * Alas, read as much as possible, split up into lines, use the ending
- * line in a response or continue reading. */
-
- curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
- long timeout; /* timeout in milliseconds */
- long interval_ms;
- struct SessionHandle *data = conn->data;
- CURLcode result = CURLE_OK;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
- size_t nread;
- int cache_skip=0;
- int value_to_be_ignored=0;
-
- if(ftpcode)
- *ftpcode = 0; /* 0 for errors */
- else
- /* make the pointer point to something for the rest of this function */
- ftpcode = &value_to_be_ignored;
-
- *nreadp=0;
-
- while(!*ftpcode && !result) {
- /* check and reset timeout value every lap */
- timeout = Curl_pp_state_timeout(pp);
-
- if(timeout <=0 ) {
- failf(data, "FTP response timeout");
- return CURLE_OPERATION_TIMEDOUT; /* already too little time */
- }
-
- interval_ms = 1000; /* use 1 second timeout intervals */
- if(timeout < interval_ms)
- interval_ms = timeout;
-
- /*
- * Since this function is blocking, we need to wait here for input on the
- * connection and only then we call the response reading function. We do
- * timeout at least every second to make the timeout check run.
- *
- * A caution here is that the ftp_readresp() function has a cache that may
- * contain pieces of a response from the previous invoke and we need to
- * make sure we don't just wait for input while there is unhandled data in
- * that cache. But also, if the cache is there, we call ftp_readresp() and
- * the cache wasn't good enough to continue we must not just busy-loop
- * around this function.
- *
- */
-
- if(pp->cache && (cache_skip < 2)) {
- /*
- * There's a cache left since before. We then skipping the wait for
- * socket action, unless this is the same cache like the previous round
- * as then the cache was deemed not enough to act on and we then need to
- * wait for more data anyway.
- */
- }
- else {
- switch (Curl_socket_ready(sockfd, CURL_SOCKET_BAD, interval_ms)) {
- case -1: /* select() error, stop reading */
- failf(data, "FTP response aborted due to select/poll error: %d",
- SOCKERRNO);
- return CURLE_RECV_ERROR;
-
- case 0: /* timeout */
- if(Curl_pgrsUpdate(conn))
- return CURLE_ABORTED_BY_CALLBACK;
- continue; /* just continue in our loop for the timeout duration */
-
- default: /* for clarity */
- break;
- }
- }
- result = ftp_readresp(sockfd, pp, ftpcode, &nread);
- if(result)
- break;
-
- if(!nread && pp->cache)
- /* bump cache skip counter as on repeated skips we must wait for more
- data */
- cache_skip++;
- else
- /* when we got data or there is no cache left, we reset the cache skip
- counter */
- cache_skip=0;
-
- *nreadp += nread;
-
- } /* while there's buffer left and loop is requested */
-
- pp->pending_resp = FALSE;
-
- return result;
-}
-
-#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
- /* for debug purposes */
-static const char * const ftp_state_names[]={
- "STOP",
- "WAIT220",
- "AUTH",
- "USER",
- "PASS",
- "ACCT",
- "PBSZ",
- "PROT",
- "CCC",
- "PWD",
- "SYST",
- "NAMEFMT",
- "QUOTE",
- "RETR_PREQUOTE",
- "STOR_PREQUOTE",
- "POSTQUOTE",
- "CWD",
- "MKD",
- "MDTM",
- "TYPE",
- "LIST_TYPE",
- "RETR_TYPE",
- "STOR_TYPE",
- "SIZE",
- "RETR_SIZE",
- "STOR_SIZE",
- "REST",
- "RETR_REST",
- "PORT",
- "PRET",
- "PASV",
- "LIST",
- "RETR",
- "STOR",
- "QUIT"
-};
-#endif
-
-/* This is the ONLY way to change FTP state! */
-static void _state(struct connectdata *conn,
- ftpstate newstate
-#ifdef DEBUGBUILD
- , int lineno
-#endif
- )
-{
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
- if(ftpc->state != newstate)
- infof(conn->data, "FTP %p (line %d) state change from %s to %s\n",
- (void *)ftpc, lineno, ftp_state_names[ftpc->state],
- ftp_state_names[newstate]);
-#endif
- ftpc->state = newstate;
-}
-
-static CURLcode ftp_state_user(struct connectdata *conn)
-{
- CURLcode result;
- struct FTP *ftp = conn->data->req.protop;
- /* send USER */
- PPSENDF(&conn->proto.ftpc.pp, "USER %s", ftp->user?ftp->user:"");
-
- state(conn, FTP_USER);
- conn->data->state.ftp_trying_alternative = FALSE;
-
- return CURLE_OK;
-}
-
-static CURLcode ftp_state_pwd(struct connectdata *conn)
-{
- CURLcode result;
-
- /* send PWD to discover our entry point */
- PPSENDF(&conn->proto.ftpc.pp, "%s", "PWD");
- state(conn, FTP_PWD);
-
- return CURLE_OK;
-}
-
-/* For the FTP "protocol connect" and "doing" phases only */
-static int ftp_getsock(struct connectdata *conn,
- curl_socket_t *socks,
- int numsocks)
-{
- return Curl_pp_getsock(&conn->proto.ftpc.pp, socks, numsocks);
-}
-
-/* For the FTP "DO_MORE" phase only */
-static int ftp_domore_getsock(struct connectdata *conn, curl_socket_t *socks,
- int numsocks)
-{
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- if(!numsocks)
- return GETSOCK_BLANK;
-
- /* When in DO_MORE state, we could be either waiting for us to connect to a
- * remote site, or we could wait for that site to connect to us. Or just
- * handle ordinary commands.
- */
-
- if(FTP_STOP == ftpc->state) {
- int bits = GETSOCK_READSOCK(0);
-
- /* if stopped and still in this state, then we're also waiting for a
- connect on the secondary connection */
- socks[0] = conn->sock[FIRSTSOCKET];
-
- if(!conn->data->set.ftp_use_port) {
- int s;
- int i;
- /* PORT is used to tell the server to connect to us, and during that we
- don't do happy eyeballs, but we do if we connect to the server */
- for(s=1, i=0; i<2; i++) {
- if(conn->tempsock[i] != CURL_SOCKET_BAD) {
- socks[s] = conn->tempsock[i];
- bits |= GETSOCK_WRITESOCK(s++);
- }
- }
- }
- else {
- socks[1] = conn->sock[SECONDARYSOCKET];
- bits |= GETSOCK_WRITESOCK(1);
- }
-
- return bits;
- }
- else
- return Curl_pp_getsock(&conn->proto.ftpc.pp, socks, numsocks);
-}
-
-/* This is called after the FTP_QUOTE state is passed.
-
- ftp_state_cwd() sends the range of CWD commands to the server to change to
- the correct directory. It may also need to send MKD commands to create
- missing ones, if that option is enabled.
-*/
-static CURLcode ftp_state_cwd(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- if(ftpc->cwddone)
- /* already done and fine */
- result = ftp_state_mdtm(conn);
- else {
- ftpc->count2 = 0; /* count2 counts failed CWDs */
-
- /* count3 is set to allow a MKD to fail once. In the case when first CWD
- fails and then MKD fails (due to another session raced it to create the
- dir) this then allows for a second try to CWD to it */
- ftpc->count3 = (conn->data->set.ftp_create_missing_dirs==2)?1:0;
-
- if(conn->bits.reuse && ftpc->entrypath) {
- /* This is a re-used connection. Since we change directory to where the
- transfer is taking place, we must first get back to the original dir
- where we ended up after login: */
- ftpc->count1 = 0; /* we count this as the first path, then we add one
- for all upcoming ones in the ftp->dirs[] array */
- PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->entrypath);
- state(conn, FTP_CWD);
- }
- else {
- if(ftpc->dirdepth) {
- ftpc->count1 = 1;
- /* issue the first CWD, the rest is sent when the CWD responses are
- received... */
- PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->dirs[ftpc->count1 -1]);
- state(conn, FTP_CWD);
- }
- else {
- /* No CWD necessary */
- result = ftp_state_mdtm(conn);
- }
- }
- }
- return result;
-}
-
-typedef enum {
- EPRT,
- PORT,
- DONE
-} ftpport;
-
-static CURLcode ftp_state_use_port(struct connectdata *conn,
- ftpport fcmd) /* start with this */
-
-{
- CURLcode result = CURLE_OK;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct SessionHandle *data=conn->data;
- curl_socket_t portsock= CURL_SOCKET_BAD;
- char myhost[256] = "";
-
- struct Curl_sockaddr_storage ss;
- Curl_addrinfo *res, *ai;
- curl_socklen_t sslen;
- char hbuf[NI_MAXHOST];
- struct sockaddr *sa=(struct sockaddr *)&ss;
- struct sockaddr_in * const sa4 = (void *)sa;
-#ifdef ENABLE_IPV6
- struct sockaddr_in6 * const sa6 = (void *)sa;
-#endif
- char tmp[1024];
- static const char mode[][5] = { "EPRT", "PORT" };
- int rc;
- int error;
- char *host = NULL;
- char *string_ftpport = data->set.str[STRING_FTPPORT];
- struct Curl_dns_entry *h=NULL;
- unsigned short port_min = 0;
- unsigned short port_max = 0;
- unsigned short port;
- bool possibly_non_local = TRUE;
-
- char *addr = NULL;
-
- /* Step 1, figure out what is requested,
- * accepted format :
- * (ipv4|ipv6|domain|interface)?(:port(-range)?)?
- */
-
- if(data->set.str[STRING_FTPPORT] &&
- (strlen(data->set.str[STRING_FTPPORT]) > 1)) {
-
-#ifdef ENABLE_IPV6
- size_t addrlen = INET6_ADDRSTRLEN > strlen(string_ftpport) ?
- INET6_ADDRSTRLEN : strlen(string_ftpport);
-#else
- size_t addrlen = INET_ADDRSTRLEN > strlen(string_ftpport) ?
- INET_ADDRSTRLEN : strlen(string_ftpport);
-#endif
- char *ip_start = string_ftpport;
- char *ip_end = NULL;
- char *port_start = NULL;
- char *port_sep = NULL;
-
- addr = calloc(addrlen+1, 1);
- if(!addr)
- return CURLE_OUT_OF_MEMORY;
-
-#ifdef ENABLE_IPV6
- if(*string_ftpport == '[') {
- /* [ipv6]:port(-range) */
- ip_start = string_ftpport + 1;
- if((ip_end = strchr(string_ftpport, ']')) != NULL )
- strncpy(addr, ip_start, ip_end - ip_start);
- }
- else
-#endif
- if(*string_ftpport == ':') {
- /* :port */
- ip_end = string_ftpport;
- }
- else if((ip_end = strchr(string_ftpport, ':')) != NULL) {
- /* either ipv6 or (ipv4|domain|interface):port(-range) */
-#ifdef ENABLE_IPV6
- if(Curl_inet_pton(AF_INET6, string_ftpport, sa6) == 1) {
- /* ipv6 */
- port_min = port_max = 0;
- strcpy(addr, string_ftpport);
- ip_end = NULL; /* this got no port ! */
- }
- else
-#endif
- /* (ipv4|domain|interface):port(-range) */
- strncpy(addr, string_ftpport, ip_end - ip_start );
- }
- else
- /* ipv4|interface */
- strcpy(addr, string_ftpport);
-
- /* parse the port */
- if(ip_end != NULL) {
- if((port_start = strchr(ip_end, ':')) != NULL) {
- port_min = curlx_ultous(strtoul(port_start+1, NULL, 10));
- if((port_sep = strchr(port_start, '-')) != NULL) {
- port_max = curlx_ultous(strtoul(port_sep + 1, NULL, 10));
- }
- else
- port_max = port_min;
- }
- }
-
- /* correct errors like:
- * :1234-1230
- * :-4711 , in this case port_min is (unsigned)-1,
- * therefore port_min > port_max for all cases
- * but port_max = (unsigned)-1
- */
- if(port_min > port_max )
- port_min = port_max = 0;
-
-
- if(*addr != '\0') {
- /* attempt to get the address of the given interface name */
- switch(Curl_if2ip(conn->ip_addr->ai_family, conn->scope, addr,
- hbuf, sizeof(hbuf))) {
- case IF2IP_NOT_FOUND:
- /* not an interface, use the given string as host name instead */
- host = addr;
- break;
- case IF2IP_AF_NOT_SUPPORTED:
- return CURLE_FTP_PORT_FAILED;
- case IF2IP_FOUND:
- host = hbuf; /* use the hbuf for host name */
- }
- }
- else
- /* there was only a port(-range) given, default the host */
- host = NULL;
- } /* data->set.ftpport */
-
- if(!host) {
- /* not an interface and not a host name, get default by extracting
- the IP from the control connection */
-
- sslen = sizeof(ss);
- if(getsockname(conn->sock[FIRSTSOCKET], sa, &sslen)) {
- failf(data, "getsockname() failed: %s",
- Curl_strerror(conn, SOCKERRNO) );
- Curl_safefree(addr);
- return CURLE_FTP_PORT_FAILED;
- }
- switch(sa->sa_family) {
-#ifdef ENABLE_IPV6
- case AF_INET6:
- Curl_inet_ntop(sa->sa_family, &sa6->sin6_addr, hbuf, sizeof(hbuf));
- break;
-#endif
- default:
- Curl_inet_ntop(sa->sa_family, &sa4->sin_addr, hbuf, sizeof(hbuf));
- break;
- }
- host = hbuf; /* use this host name */
- possibly_non_local = FALSE; /* we know it is local now */
- }
-
- /* resolv ip/host to ip */
- rc = Curl_resolv(conn, host, 0, &h);
- if(rc == CURLRESOLV_PENDING)
- (void)Curl_resolver_wait_resolv(conn, &h);
- if(h) {
- res = h->addr;
- /* when we return from this function, we can forget about this entry
- to we can unlock it now already */
- Curl_resolv_unlock(data, h);
- } /* (h) */
- else
- res = NULL; /* failure! */
-
- if(res == NULL) {
- failf(data, "failed to resolve the address provided to PORT: %s", host);
- Curl_safefree(addr);
- return CURLE_FTP_PORT_FAILED;
- }
-
- Curl_safefree(addr);
- host = NULL;
-
- /* step 2, create a socket for the requested address */
-
- portsock = CURL_SOCKET_BAD;
- error = 0;
- for(ai = res; ai; ai = ai->ai_next) {
- result = Curl_socket(conn, ai, NULL, &portsock);
- if(result) {
- error = SOCKERRNO;
- continue;
- }
- break;
- }
- if(!ai) {
- failf(data, "socket failure: %s", Curl_strerror(conn, error));
- return CURLE_FTP_PORT_FAILED;
- }
-
- /* step 3, bind to a suitable local address */
-
- memcpy(sa, ai->ai_addr, ai->ai_addrlen);
- sslen = ai->ai_addrlen;
-
- for(port = port_min; port <= port_max;) {
- if(sa->sa_family == AF_INET)
- sa4->sin_port = htons(port);
-#ifdef ENABLE_IPV6
- else
- sa6->sin6_port = htons(port);
-#endif
- /* Try binding the given address. */
- if(bind(portsock, sa, sslen) ) {
- /* It failed. */
- error = SOCKERRNO;
- if(possibly_non_local && (error == EADDRNOTAVAIL)) {
- /* The requested bind address is not local. Use the address used for
- * the control connection instead and restart the port loop
- */
-
- infof(data, "bind(port=%hu) on non-local address failed: %s\n", port,
- Curl_strerror(conn, error) );
-
- sslen = sizeof(ss);
- if(getsockname(conn->sock[FIRSTSOCKET], sa, &sslen)) {
- failf(data, "getsockname() failed: %s",
- Curl_strerror(conn, SOCKERRNO) );
- Curl_closesocket(conn, portsock);
- return CURLE_FTP_PORT_FAILED;
- }
- port = port_min;
- possibly_non_local = FALSE; /* don't try this again */
- continue;
- }
- else if(error != EADDRINUSE && error != EACCES) {
- failf(data, "bind(port=%hu) failed: %s", port,
- Curl_strerror(conn, error) );
- Curl_closesocket(conn, portsock);
- return CURLE_FTP_PORT_FAILED;
- }
- }
- else
- break;
-
- port++;
- }
-
- /* maybe all ports were in use already*/
- if(port > port_max) {
- failf(data, "bind() failed, we ran out of ports!");
- Curl_closesocket(conn, portsock);
- return CURLE_FTP_PORT_FAILED;
- }
-
- /* get the name again after the bind() so that we can extract the
- port number it uses now */
- sslen = sizeof(ss);
- if(getsockname(portsock, (struct sockaddr *)sa, &sslen)) {
- failf(data, "getsockname() failed: %s",
- Curl_strerror(conn, SOCKERRNO) );
- Curl_closesocket(conn, portsock);
- return CURLE_FTP_PORT_FAILED;
- }
-
- /* step 4, listen on the socket */
-
- if(listen(portsock, 1)) {
- failf(data, "socket failure: %s", Curl_strerror(conn, SOCKERRNO));
- Curl_closesocket(conn, portsock);
- return CURLE_FTP_PORT_FAILED;
- }
-
- /* step 5, send the proper FTP command */
-
- /* get a plain printable version of the numerical address to work with
- below */
- Curl_printable_address(ai, myhost, sizeof(myhost));
-
-#ifdef ENABLE_IPV6
- if(!conn->bits.ftp_use_eprt && conn->bits.ipv6)
- /* EPRT is disabled but we are connected to a IPv6 host, so we ignore the
- request and enable EPRT again! */
- conn->bits.ftp_use_eprt = TRUE;
-#endif
-
- for(; fcmd != DONE; fcmd++) {
-
- if(!conn->bits.ftp_use_eprt && (EPRT == fcmd))
- /* if disabled, goto next */
- continue;
-
- if((PORT == fcmd) && sa->sa_family != AF_INET)
- /* PORT is ipv4 only */
- continue;
-
- switch (sa->sa_family) {
- case AF_INET:
- port = ntohs(sa4->sin_port);
- break;
-#ifdef ENABLE_IPV6
- case AF_INET6:
- port = ntohs(sa6->sin6_port);
- break;
-#endif
- default:
- continue; /* might as well skip this */
- }
-
- if(EPRT == fcmd) {
- /*
- * Two fine examples from RFC2428;
- *
- * EPRT |1|132.235.1.2|6275|
- *
- * EPRT |2|1080::8:800:200C:417A|5282|
- */
-
- result = Curl_pp_sendf(&ftpc->pp, "%s |%d|%s|%hu|", mode[fcmd],
- sa->sa_family == AF_INET?1:2,
- myhost, port);
- if(result) {
- failf(data, "Failure sending EPRT command: %s",
- curl_easy_strerror(result));
- Curl_closesocket(conn, portsock);
- /* don't retry using PORT */
- ftpc->count1 = PORT;
- /* bail out */
- state(conn, FTP_STOP);
- return result;
- }
- break;
- }
- else if(PORT == fcmd) {
- char *source = myhost;
- char *dest = tmp;
-
- /* translate x.x.x.x to x,x,x,x */
- while(source && *source) {
- if(*source == '.')
- *dest=',';
- else
- *dest = *source;
- dest++;
- source++;
- }
- *dest = 0;
- snprintf(dest, 20, ",%d,%d", (int)(port>>8), (int)(port&0xff));
-
- result = Curl_pp_sendf(&ftpc->pp, "%s %s", mode[fcmd], tmp);
- if(result) {
- failf(data, "Failure sending PORT command: %s",
- curl_easy_strerror(result));
- Curl_closesocket(conn, portsock);
- /* bail out */
- state(conn, FTP_STOP);
- return result;
- }
- break;
- }
- }
-
- /* store which command was sent */
- ftpc->count1 = fcmd;
-
- /* we set the secondary socket variable to this for now, it is only so that
- the cleanup function will close it in case we fail before the true
- secondary stuff is made */
- if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
- Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
- conn->sock[SECONDARYSOCKET] = portsock;
-
- /* this tcpconnect assignment below is a hackish work-around to make the
- multi interface with active FTP work - as it will not wait for a
- (passive) connect in Curl_is_connected().
-
- The *proper* fix is to make sure that the active connection from the
- server is done in a non-blocking way. Currently, it is still BLOCKING.
- */
- conn->bits.tcpconnect[SECONDARYSOCKET] = TRUE;
-
- state(conn, FTP_PORT);
- return result;
-}
-
-static CURLcode ftp_state_use_pasv(struct connectdata *conn)
-{
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- CURLcode result = CURLE_OK;
- /*
- Here's the excecutive summary on what to do:
-
- PASV is RFC959, expect:
- 227 Entering Passive Mode (a1,a2,a3,a4,p1,p2)
-
- LPSV is RFC1639, expect:
- 228 Entering Long Passive Mode (4,4,a1,a2,a3,a4,2,p1,p2)
-
- EPSV is RFC2428, expect:
- 229 Entering Extended Passive Mode (|||port|)
-
- */
-
- static const char mode[][5] = { "EPSV", "PASV" };
- int modeoff;
-
-#ifdef PF_INET6
- if(!conn->bits.ftp_use_epsv && conn->bits.ipv6)
- /* EPSV is disabled but we are connected to a IPv6 host, so we ignore the
- request and enable EPSV again! */
- conn->bits.ftp_use_epsv = TRUE;
-#endif
-
- modeoff = conn->bits.ftp_use_epsv?0:1;
-
- PPSENDF(&ftpc->pp, "%s", mode[modeoff]);
-
- ftpc->count1 = modeoff;
- state(conn, FTP_PASV);
- infof(conn->data, "Connect data stream passively\n");
-
- return result;
-}
-
-/*
- * ftp_state_prepare_transfer() starts PORT, PASV or PRET etc.
- *
- * REST is the last command in the chain of commands when a "head"-like
- * request is made. Thus, if an actual transfer is to be made this is where we
- * take off for real.
- */
-static CURLcode ftp_state_prepare_transfer(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct FTP *ftp = conn->data->req.protop;
- struct SessionHandle *data = conn->data;
-
- if(ftp->transfer != FTPTRANSFER_BODY) {
- /* doesn't transfer any data */
-
- /* still possibly do PRE QUOTE jobs */
- state(conn, FTP_RETR_PREQUOTE);
- result = ftp_state_quote(conn, TRUE, FTP_RETR_PREQUOTE);
- }
- else if(data->set.ftp_use_port) {
- /* We have chosen to use the PORT (or similar) command */
- result = ftp_state_use_port(conn, EPRT);
- }
- else {
- /* We have chosen (this is default) to use the PASV (or similar) command */
- if(data->set.ftp_use_pret) {
- /* The user has requested that we send a PRET command
- to prepare the server for the upcoming PASV */
- if(!conn->proto.ftpc.file) {
- PPSENDF(&conn->proto.ftpc.pp, "PRET %s",
- data->set.str[STRING_CUSTOMREQUEST]?
- data->set.str[STRING_CUSTOMREQUEST]:
- (data->set.ftp_list_only?"NLST":"LIST"));
- }
- else if(data->set.upload) {
- PPSENDF(&conn->proto.ftpc.pp, "PRET STOR %s", conn->proto.ftpc.file);
- }
- else {
- PPSENDF(&conn->proto.ftpc.pp, "PRET RETR %s", conn->proto.ftpc.file);
- }
- state(conn, FTP_PRET);
- }
- else {
- result = ftp_state_use_pasv(conn);
- }
- }
- return result;
-}
-
-static CURLcode ftp_state_rest(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct FTP *ftp = conn->data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- if((ftp->transfer != FTPTRANSFER_BODY) && ftpc->file) {
- /* if a "head"-like request is being made (on a file) */
-
- /* Determine if server can respond to REST command and therefore
- whether it supports range */
- PPSENDF(&conn->proto.ftpc.pp, "REST %d", 0);
-
- state(conn, FTP_REST);
- }
- else
- result = ftp_state_prepare_transfer(conn);
-
- return result;
-}
-
-static CURLcode ftp_state_size(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct FTP *ftp = conn->data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- if((ftp->transfer == FTPTRANSFER_INFO) && ftpc->file) {
- /* if a "head"-like request is being made (on a file) */
-
- /* we know ftpc->file is a valid pointer to a file name */
- PPSENDF(&ftpc->pp, "SIZE %s", ftpc->file);
-
- state(conn, FTP_SIZE);
- }
- else
- result = ftp_state_rest(conn);
-
- return result;
-}
-
-static CURLcode ftp_state_list(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
-
- /* If this output is to be machine-parsed, the NLST command might be better
- to use, since the LIST command output is not specified or standard in any
- way. It has turned out that the NLST list output is not the same on all
- servers either... */
-
- /*
- if FTPFILE_NOCWD was specified, we are currently in
- the user's home directory, so we should add the path
- as argument for the LIST / NLST / or custom command.
- Whether the server will support this, is uncertain.
-
- The other ftp_filemethods will CWD into dir/dir/ first and
- then just do LIST (in that case: nothing to do here)
- */
- char *cmd,*lstArg,*slashPos;
-
- lstArg = NULL;
- if((data->set.ftp_filemethod == FTPFILE_NOCWD) &&
- data->state.path &&
- data->state.path[0] &&
- strchr(data->state.path,'/')) {
-
- lstArg = strdup(data->state.path);
- if(!lstArg)
- return CURLE_OUT_OF_MEMORY;
-
- /* Check if path does not end with /, as then we cut off the file part */
- if(lstArg[strlen(lstArg) - 1] != '/') {
-
- /* chop off the file part if format is dir/dir/file */
- slashPos = strrchr(lstArg,'/');
- if(slashPos)
- *(slashPos+1) = '\0';
- }
- }
-
- cmd = aprintf( "%s%s%s",
- data->set.str[STRING_CUSTOMREQUEST]?
- data->set.str[STRING_CUSTOMREQUEST]:
- (data->set.ftp_list_only?"NLST":"LIST"),
- lstArg? " ": "",
- lstArg? lstArg: "" );
-
- if(!cmd) {
- if(lstArg)
- free(lstArg);
- return CURLE_OUT_OF_MEMORY;
- }
-
- result = Curl_pp_sendf(&conn->proto.ftpc.pp, "%s", cmd);
-
- if(lstArg)
- free(lstArg);
-
- free(cmd);
-
- if(result != CURLE_OK)
- return result;
-
- state(conn, FTP_LIST);
-
- return result;
-}
-
-static CURLcode ftp_state_retr_prequote(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
-
- /* We've sent the TYPE, now we must send the list of prequote strings */
-
- result = ftp_state_quote(conn, TRUE, FTP_RETR_PREQUOTE);
-
- return result;
-}
-
-static CURLcode ftp_state_stor_prequote(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
-
- /* We've sent the TYPE, now we must send the list of prequote strings */
-
- result = ftp_state_quote(conn, TRUE, FTP_STOR_PREQUOTE);
-
- return result;
-}
-
-static CURLcode ftp_state_type(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct FTP *ftp = conn->data->req.protop;
- struct SessionHandle *data = conn->data;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- /* If we have selected NOBODY and HEADER, it means that we only want file
- information. Which in FTP can't be much more than the file size and
- date. */
- if(data->set.opt_no_body && ftpc->file &&
- ftp_need_type(conn, data->set.prefer_ascii)) {
- /* The SIZE command is _not_ RFC 959 specified, and therefor many servers
- may not support it! It is however the only way we have to get a file's
- size! */
-
- ftp->transfer = FTPTRANSFER_INFO;
- /* this means no actual transfer will be made */
-
- /* Some servers return different sizes for different modes, and thus we
- must set the proper type before we check the size */
- result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_TYPE);
- if(result)
- return result;
- }
- else
- result = ftp_state_size(conn);
-
- return result;
-}
-
-/* This is called after the CWD commands have been done in the beginning of
- the DO phase */
-static CURLcode ftp_state_mdtm(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- /* Requested time of file or time-depended transfer? */
- if((data->set.get_filetime || data->set.timecondition) && ftpc->file) {
-
- /* we have requested to get the modified-time of the file, this is a white
- spot as the MDTM is not mentioned in RFC959 */
- PPSENDF(&ftpc->pp, "MDTM %s", ftpc->file);
-
- state(conn, FTP_MDTM);
- }
- else
- result = ftp_state_type(conn);
-
- return result;
-}
-
-
-/* This is called after the TYPE and possible quote commands have been sent */
-static CURLcode ftp_state_ul_setup(struct connectdata *conn,
- bool sizechecked)
-{
- CURLcode result = CURLE_OK;
- struct FTP *ftp = conn->data->req.protop;
- struct SessionHandle *data = conn->data;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- int seekerr = CURL_SEEKFUNC_OK;
-
- if((data->state.resume_from && !sizechecked) ||
- ((data->state.resume_from > 0) && sizechecked)) {
- /* we're about to continue the uploading of a file */
- /* 1. get already existing file's size. We use the SIZE command for this
- which may not exist in the server! The SIZE command is not in
- RFC959. */
-
- /* 2. This used to set REST. But since we can do append, we
- don't another ftp command. We just skip the source file
- offset and then we APPEND the rest on the file instead */
-
- /* 3. pass file-size number of bytes in the source file */
- /* 4. lower the infilesize counter */
- /* => transfer as usual */
-
- if(data->state.resume_from < 0 ) {
- /* Got no given size to start from, figure it out */
- PPSENDF(&ftpc->pp, "SIZE %s", ftpc->file);
- state(conn, FTP_STOR_SIZE);
- return result;
- }
-
- /* enable append */
- data->set.ftp_append = TRUE;
-
- /* Let's read off the proper amount of bytes from the input. */
- if(conn->seek_func) {
- seekerr = conn->seek_func(conn->seek_client, data->state.resume_from,
- SEEK_SET);
- }
-
- if(seekerr != CURL_SEEKFUNC_OK) {
- if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
- failf(data, "Could not seek stream");
- return CURLE_FTP_COULDNT_USE_REST;
- }
- /* seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
- else {
- curl_off_t passed=0;
- do {
- size_t readthisamountnow =
- (data->state.resume_from - passed > CURL_OFF_T_C(BUFSIZE)) ?
- BUFSIZE : curlx_sotouz(data->state.resume_from - passed);
-
- size_t actuallyread =
- conn->fread_func(data->state.buffer, 1, readthisamountnow,
- conn->fread_in);
-
- passed += actuallyread;
- if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
- /* this checks for greater-than only to make sure that the
- CURL_READFUNC_ABORT return code still aborts */
- failf(data, "Failed to read data");
- return CURLE_FTP_COULDNT_USE_REST;
- }
- } while(passed < data->state.resume_from);
- }
- }
- /* now, decrease the size of the read */
- if(data->state.infilesize>0) {
- data->state.infilesize -= data->state.resume_from;
-
- if(data->state.infilesize <= 0) {
- infof(data, "File already completely uploaded\n");
-
- /* no data to transfer */
- Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
-
- /* Set ->transfer so that we won't get any error in
- * ftp_done() because we didn't transfer anything! */
- ftp->transfer = FTPTRANSFER_NONE;
-
- state(conn, FTP_STOP);
- return CURLE_OK;
- }
- }
- /* we've passed, proceed as normal */
- } /* resume_from */
-
- PPSENDF(&ftpc->pp, data->set.ftp_append?"APPE %s":"STOR %s",
- ftpc->file);
-
- state(conn, FTP_STOR);
-
- return result;
-}
-
-static CURLcode ftp_state_quote(struct connectdata *conn,
- bool init,
- ftpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct FTP *ftp = data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- bool quote=FALSE;
- struct curl_slist *item;
-
- switch(instate) {
- case FTP_QUOTE:
- default:
- item = data->set.quote;
- break;
- case FTP_RETR_PREQUOTE:
- case FTP_STOR_PREQUOTE:
- item = data->set.prequote;
- break;
- case FTP_POSTQUOTE:
- item = data->set.postquote;
- break;
- }
-
- /*
- * This state uses:
- * 'count1' to iterate over the commands to send
- * 'count2' to store wether to allow commands to fail
- */
-
- if(init)
- ftpc->count1 = 0;
- else
- ftpc->count1++;
-
- if(item) {
- int i = 0;
-
- /* Skip count1 items in the linked list */
- while((i< ftpc->count1) && item) {
- item = item->next;
- i++;
- }
- if(item) {
- char *cmd = item->data;
- if(cmd[0] == '*') {
- cmd++;
- ftpc->count2 = 1; /* the sent command is allowed to fail */
- }
- else
- ftpc->count2 = 0; /* failure means cancel operation */
-
- PPSENDF(&ftpc->pp, "%s", cmd);
- state(conn, instate);
- quote = TRUE;
- }
- }
-
- if(!quote) {
- /* No more quote to send, continue to ... */
- switch(instate) {
- case FTP_QUOTE:
- default:
- result = ftp_state_cwd(conn);
- break;
- case FTP_RETR_PREQUOTE:
- if(ftp->transfer != FTPTRANSFER_BODY)
- state(conn, FTP_STOP);
- else {
- if(ftpc->known_filesize != -1) {
- Curl_pgrsSetDownloadSize(data, ftpc->known_filesize);
- result = ftp_state_retr(conn, ftpc->known_filesize);
- }
- else {
- PPSENDF(&ftpc->pp, "SIZE %s", ftpc->file);
- state(conn, FTP_RETR_SIZE);
- }
- }
- break;
- case FTP_STOR_PREQUOTE:
- result = ftp_state_ul_setup(conn, FALSE);
- break;
- case FTP_POSTQUOTE:
- break;
- }
- }
-
- return result;
-}
-
-/* called from ftp_state_pasv_resp to switch to PASV in case of EPSV
- problems */
-static CURLcode ftp_epsv_disable(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- infof(conn->data, "Failed EPSV attempt. Disabling EPSV\n");
- /* disable it for next transfer */
- conn->bits.ftp_use_epsv = FALSE;
- conn->data->state.errorbuf = FALSE; /* allow error message to get
- rewritten */
- PPSENDF(&conn->proto.ftpc.pp, "%s", "PASV");
- conn->proto.ftpc.count1++;
- /* remain in/go to the FTP_PASV state */
- state(conn, FTP_PASV);
- return result;
-}
-
-/*
- * Perform the necessary magic that needs to be done once the TCP connection
- * to the proxy has completed.
- */
-static CURLcode proxy_magic(struct connectdata *conn,
- char *newhost, unsigned short newport,
- bool *magicdone)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data=conn->data;
-
- *magicdone = FALSE;
- switch(conn->proxytype) {
- case CURLPROXY_SOCKS5:
- case CURLPROXY_SOCKS5_HOSTNAME:
- result = Curl_SOCKS5(conn->proxyuser, conn->proxypasswd, newhost,
- newport, SECONDARYSOCKET, conn);
- *magicdone = TRUE;
- break;
- case CURLPROXY_SOCKS4:
- result = Curl_SOCKS4(conn->proxyuser, newhost, newport,
- SECONDARYSOCKET, conn, FALSE);
- *magicdone = TRUE;
- break;
- case CURLPROXY_SOCKS4A:
- result = Curl_SOCKS4(conn->proxyuser, newhost, newport,
- SECONDARYSOCKET, conn, TRUE);
- *magicdone = TRUE;
- break;
- case CURLPROXY_HTTP:
- case CURLPROXY_HTTP_1_0:
- /* do nothing here. handled later. */
- break;
- default:
- failf(data, "unknown proxytype option given");
- result = CURLE_COULDNT_CONNECT;
- break;
- }
-
- if(conn->bits.tunnel_proxy && conn->bits.httpproxy) {
- /* BLOCKING */
- /* We want "seamless" FTP operations through HTTP proxy tunnel */
-
- /* Curl_proxyCONNECT is based on a pointer to a struct HTTP at the
- * member conn->proto.http; we want FTP through HTTP and we have to
- * change the member temporarily for connecting to the HTTP proxy. After
- * Curl_proxyCONNECT we have to set back the member to the original
- * struct FTP pointer
- */
- struct HTTP http_proxy;
- struct FTP *ftp_save = data->req.protop;
- memset(&http_proxy, 0, sizeof(http_proxy));
- data->req.protop = &http_proxy;
-
- result = Curl_proxyCONNECT(conn, SECONDARYSOCKET, newhost, newport);
-
- data->req.protop = ftp_save;
-
- if(result)
- return result;
-
- if(conn->tunnel_state[SECONDARYSOCKET] != TUNNEL_COMPLETE) {
- /* the CONNECT procedure is not complete, the tunnel is not yet up */
- state(conn, FTP_STOP); /* this phase is completed */
- return result;
- }
- else
- *magicdone = TRUE;
- }
- return result;
-}
-
-static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
- int ftpcode)
-{
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- CURLcode result;
- struct SessionHandle *data=conn->data;
- struct Curl_dns_entry *addr=NULL;
- int rc;
- unsigned short connectport; /* the local port connect() should use! */
- char *str=&data->state.buffer[4]; /* start on the first letter */
-
- if((ftpc->count1 == 0) &&
- (ftpcode == 229)) {
- /* positive EPSV response */
- char *ptr = strchr(str, '(');
- if(ptr) {
- unsigned int num;
- char separator[4];
- ptr++;
- if(5 == sscanf(ptr, "%c%c%c%u%c",
- &separator[0],
- &separator[1],
- &separator[2],
- &num,
- &separator[3])) {
- const char sep1 = separator[0];
- int i;
-
- /* The four separators should be identical, or else this is an oddly
- formatted reply and we bail out immediately. */
- for(i=1; i<4; i++) {
- if(separator[i] != sep1) {
- ptr=NULL; /* set to NULL to signal error */
- break;
- }
- }
- if(num > 0xffff) {
- failf(data, "Illegal port number in EPSV reply");
- return CURLE_FTP_WEIRD_PASV_REPLY;
- }
- if(ptr) {
- ftpc->newport = (unsigned short)(num & 0xffff);
-
- if(conn->bits.tunnel_proxy ||
- conn->proxytype == CURLPROXY_SOCKS5 ||
- conn->proxytype == CURLPROXY_SOCKS5_HOSTNAME ||
- conn->proxytype == CURLPROXY_SOCKS4 ||
- conn->proxytype == CURLPROXY_SOCKS4A)
- /* proxy tunnel -> use other host info because ip_addr_str is the
- proxy address not the ftp host */
- snprintf(ftpc->newhost, sizeof(ftpc->newhost), "%s",
- conn->host.name);
- else
- /* use the same IP we are already connected to */
- snprintf(ftpc->newhost, NEWHOST_BUFSIZE, "%s", conn->ip_addr_str);
- }
- }
- else
- ptr=NULL;
- }
- if(!ptr) {
- failf(data, "Weirdly formatted EPSV reply");
- return CURLE_FTP_WEIRD_PASV_REPLY;
- }
- }
- else if((ftpc->count1 == 1) &&
- (ftpcode == 227)) {
- /* positive PASV response */
- int ip[4];
- int port[2];
-
- /*
- * Scan for a sequence of six comma-separated numbers and use them as
- * IP+port indicators.
- *
- * Found reply-strings include:
- * "227 Entering Passive Mode (127,0,0,1,4,51)"
- * "227 Data transfer will passively listen to 127,0,0,1,4,51"
- * "227 Entering passive mode. 127,0,0,1,4,51"
- */
- while(*str) {
- if(6 == sscanf(str, "%d,%d,%d,%d,%d,%d",
- &ip[0], &ip[1], &ip[2], &ip[3],
- &port[0], &port[1]))
- break;
- str++;
- }
-
- if(!*str) {
- failf(data, "Couldn't interpret the 227-response");
- return CURLE_FTP_WEIRD_227_FORMAT;
- }
-
- /* we got OK from server */
- if(data->set.ftp_skip_ip) {
- /* told to ignore the remotely given IP but instead use the one we used
- for the control connection */
- infof(data, "Skips %d.%d.%d.%d for data connection, uses %s instead\n",
- ip[0], ip[1], ip[2], ip[3],
- conn->ip_addr_str);
- if(conn->bits.tunnel_proxy ||
- conn->proxytype == CURLPROXY_SOCKS5 ||
- conn->proxytype == CURLPROXY_SOCKS5_HOSTNAME ||
- conn->proxytype == CURLPROXY_SOCKS4 ||
- conn->proxytype == CURLPROXY_SOCKS4A)
- /* proxy tunnel -> use other host info because ip_addr_str is the
- proxy address not the ftp host */
- snprintf(ftpc->newhost, sizeof(ftpc->newhost), "%s", conn->host.name);
- else
- snprintf(ftpc->newhost, sizeof(ftpc->newhost), "%s",
- conn->ip_addr_str);
- }
- else
- snprintf(ftpc->newhost, sizeof(ftpc->newhost),
- "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
- ftpc->newport = (unsigned short)(((port[0]<<8) + port[1]) & 0xffff);
- }
- else if(ftpc->count1 == 0) {
- /* EPSV failed, move on to PASV */
- return ftp_epsv_disable(conn);
- }
- else {
- failf(data, "Bad PASV/EPSV response: %03d", ftpcode);
- return CURLE_FTP_WEIRD_PASV_REPLY;
- }
-
- if(conn->bits.proxy) {
- /*
- * This connection uses a proxy and we need to connect to the proxy again
- * here. We don't want to rely on a former host lookup that might've
- * expired now, instead we remake the lookup here and now!
- */
- rc = Curl_resolv(conn, conn->proxy.name, (int)conn->port, &addr);
- if(rc == CURLRESOLV_PENDING)
- /* BLOCKING, ignores the return code but 'addr' will be NULL in
- case of failure */
- (void)Curl_resolver_wait_resolv(conn, &addr);
-
- connectport =
- (unsigned short)conn->port; /* we connect to the proxy's port */
-
- if(!addr) {
- failf(data, "Can't resolve proxy host %s:%hu",
- conn->proxy.name, connectport);
- return CURLE_FTP_CANT_GET_HOST;
- }
- }
- else {
- /* normal, direct, ftp connection */
- rc = Curl_resolv(conn, ftpc->newhost, ftpc->newport, &addr);
- if(rc == CURLRESOLV_PENDING)
- /* BLOCKING */
- (void)Curl_resolver_wait_resolv(conn, &addr);
-
- connectport = ftpc->newport; /* we connect to the remote port */
-
- if(!addr) {
- failf(data, "Can't resolve new host %s:%hu", ftpc->newhost, connectport);
- return CURLE_FTP_CANT_GET_HOST;
- }
- }
-
- conn->bits.tcpconnect[SECONDARYSOCKET] = FALSE;
- result = Curl_connecthost(conn, addr);
-
- Curl_resolv_unlock(data, addr); /* we're done using this address */
-
- if(result) {
- if(ftpc->count1 == 0 && ftpcode == 229)
- return ftp_epsv_disable(conn);
-
- return result;
- }
-
-
- /*
- * When this is used from the multi interface, this might've returned with
- * the 'connected' set to FALSE and thus we are now awaiting a non-blocking
- * connect to connect.
- */
-
- if(data->set.verbose)
- /* this just dumps information about this second connection */
- ftp_pasv_verbose(conn, conn->ip_addr, ftpc->newhost, connectport);
-
- conn->bits.do_more = TRUE;
- state(conn, FTP_STOP); /* this phase is completed */
-
- return result;
-}
-
-static CURLcode ftp_state_port_resp(struct connectdata *conn,
- int ftpcode)
-{
- struct SessionHandle *data = conn->data;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- ftpport fcmd = (ftpport)ftpc->count1;
- CURLcode result = CURLE_OK;
-
- if(ftpcode != 200) {
- /* the command failed */
-
- if(EPRT == fcmd) {
- infof(data, "disabling EPRT usage\n");
- conn->bits.ftp_use_eprt = FALSE;
- }
- fcmd++;
-
- if(fcmd == DONE) {
- failf(data, "Failed to do PORT");
- result = CURLE_FTP_PORT_FAILED;
- }
- else
- /* try next */
- result = ftp_state_use_port(conn, fcmd);
- }
- else {
- infof(data, "Connect data stream actively\n");
- state(conn, FTP_STOP); /* end of DO phase */
- result = ftp_dophase_done(conn, FALSE);
- }
-
- return result;
-}
-
-static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
- int ftpcode)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data=conn->data;
- struct FTP *ftp = data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- switch(ftpcode) {
- case 213:
- {
- /* we got a time. Format should be: "YYYYMMDDHHMMSS[.sss]" where the
- last .sss part is optional and means fractions of a second */
- int year, month, day, hour, minute, second;
- char *buf = data->state.buffer;
- if(6 == sscanf(buf+4, "%04d%02d%02d%02d%02d%02d",
- &year, &month, &day, &hour, &minute, &second)) {
- /* we have a time, reformat it */
- time_t secs=time(NULL);
- /* using the good old yacc/bison yuck */
- snprintf(buf, sizeof(conn->data->state.buffer),
- "%04d%02d%02d %02d:%02d:%02d GMT",
- year, month, day, hour, minute, second);
- /* now, convert this into a time() value: */
- data->info.filetime = (long)curl_getdate(buf, &secs);
- }
-
-#ifdef CURL_FTP_HTTPSTYLE_HEAD
- /* If we asked for a time of the file and we actually got one as well,
- we "emulate" a HTTP-style header in our output. */
-
- if(data->set.opt_no_body &&
- ftpc->file &&
- data->set.get_filetime &&
- (data->info.filetime>=0) ) {
- time_t filetime = (time_t)data->info.filetime;
- struct tm buffer;
- const struct tm *tm = &buffer;
-
- result = Curl_gmtime(filetime, &buffer);
- if(result)
- return result;
-
- /* format: "Tue, 15 Nov 1994 12:45:26" */
- snprintf(buf, BUFSIZE-1,
- "Last-Modified: %s, %02d %s %4d %02d:%02d:%02d GMT\r\n",
- Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
- tm->tm_mday,
- Curl_month[tm->tm_mon],
- tm->tm_year + 1900,
- tm->tm_hour,
- tm->tm_min,
- tm->tm_sec);
- result = Curl_client_write(conn, CLIENTWRITE_BOTH, buf, 0);
- if(result)
- return result;
- } /* end of a ridiculous amount of conditionals */
-#endif
- }
- break;
- default:
- infof(data, "unsupported MDTM reply format\n");
- break;
- case 550: /* "No such file or directory" */
- failf(data, "Given file does not exist");
- result = CURLE_FTP_COULDNT_RETR_FILE;
- break;
- }
-
- if(data->set.timecondition) {
- if((data->info.filetime > 0) && (data->set.timevalue > 0)) {
- switch(data->set.timecondition) {
- case CURL_TIMECOND_IFMODSINCE:
- default:
- if(data->info.filetime <= data->set.timevalue) {
- infof(data, "The requested document is not new enough\n");
- ftp->transfer = FTPTRANSFER_NONE; /* mark to not transfer data */
- data->info.timecond = TRUE;
- state(conn, FTP_STOP);
- return CURLE_OK;
- }
- break;
- case CURL_TIMECOND_IFUNMODSINCE:
- if(data->info.filetime > data->set.timevalue) {
- infof(data, "The requested document is not old enough\n");
- ftp->transfer = FTPTRANSFER_NONE; /* mark to not transfer data */
- data->info.timecond = TRUE;
- state(conn, FTP_STOP);
- return CURLE_OK;
- }
- break;
- } /* switch */
- }
- else {
- infof(data, "Skipping time comparison\n");
- }
- }
-
- if(!result)
- result = ftp_state_type(conn);
-
- return result;
-}
-
-static CURLcode ftp_state_type_resp(struct connectdata *conn,
- int ftpcode,
- ftpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data=conn->data;
-
- if(ftpcode/100 != 2) {
- /* "sasserftpd" and "(u)r(x)bot ftpd" both responds with 226 after a
- successful 'TYPE I'. While that is not as RFC959 says, it is still a
- positive response code and we allow that. */
- failf(data, "Couldn't set desired mode");
- return CURLE_FTP_COULDNT_SET_TYPE;
- }
- if(ftpcode != 200)
- infof(data, "Got a %03d response code instead of the assumed 200\n",
- ftpcode);
-
- if(instate == FTP_TYPE)
- result = ftp_state_size(conn);
- else if(instate == FTP_LIST_TYPE)
- result = ftp_state_list(conn);
- else if(instate == FTP_RETR_TYPE)
- result = ftp_state_retr_prequote(conn);
- else if(instate == FTP_STOR_TYPE)
- result = ftp_state_stor_prequote(conn);
-
- return result;
-}
-
-static CURLcode ftp_state_retr(struct connectdata *conn,
- curl_off_t filesize)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data=conn->data;
- struct FTP *ftp = data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- if(data->set.max_filesize && (filesize > data->set.max_filesize)) {
- failf(data, "Maximum file size exceeded");
- return CURLE_FILESIZE_EXCEEDED;
- }
- ftp->downloadsize = filesize;
-
- if(data->state.resume_from) {
- /* We always (attempt to) get the size of downloads, so it is done before
- this even when not doing resumes. */
- if(filesize == -1) {
- infof(data, "ftp server doesn't support SIZE\n");
- /* We couldn't get the size and therefore we can't know if there really
- is a part of the file left to get, although the server will just
- close the connection when we start the connection so it won't cause
- us any harm, just not make us exit as nicely. */
- }
- else {
- /* We got a file size report, so we check that there actually is a
- part of the file left to get, or else we go home. */
- if(data->state.resume_from< 0) {
- /* We're supposed to download the last abs(from) bytes */
- if(filesize < -data->state.resume_from) {
- failf(data, "Offset (%" CURL_FORMAT_CURL_OFF_T
- ") was beyond file size (%" CURL_FORMAT_CURL_OFF_T ")",
- data->state.resume_from, filesize);
- return CURLE_BAD_DOWNLOAD_RESUME;
- }
- /* convert to size to download */
- ftp->downloadsize = -data->state.resume_from;
- /* download from where? */
- data->state.resume_from = filesize - ftp->downloadsize;
- }
- else {
- if(filesize < data->state.resume_from) {
- failf(data, "Offset (%" CURL_FORMAT_CURL_OFF_T
- ") was beyond file size (%" CURL_FORMAT_CURL_OFF_T ")",
- data->state.resume_from, filesize);
- return CURLE_BAD_DOWNLOAD_RESUME;
- }
- /* Now store the number of bytes we are expected to download */
- ftp->downloadsize = filesize-data->state.resume_from;
- }
- }
-
- if(ftp->downloadsize == 0) {
- /* no data to transfer */
- Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
- infof(data, "File already completely downloaded\n");
-
- /* Set ->transfer so that we won't get any error in ftp_done()
- * because we didn't transfer the any file */
- ftp->transfer = FTPTRANSFER_NONE;
- state(conn, FTP_STOP);
- return CURLE_OK;
- }
-
- /* Set resume file transfer offset */
- infof(data, "Instructs server to resume from offset %"
- CURL_FORMAT_CURL_OFF_T "\n", data->state.resume_from);
-
- PPSENDF(&ftpc->pp, "REST %" CURL_FORMAT_CURL_OFF_T,
- data->state.resume_from);
-
- state(conn, FTP_RETR_REST);
- }
- else {
- /* no resume */
- PPSENDF(&ftpc->pp, "RETR %s", ftpc->file);
- state(conn, FTP_RETR);
- }
-
- return result;
-}
-
-static CURLcode ftp_state_size_resp(struct connectdata *conn,
- int ftpcode,
- ftpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data=conn->data;
- curl_off_t filesize;
- char *buf = data->state.buffer;
-
- /* get the size from the ascii string: */
- filesize = (ftpcode == 213)?curlx_strtoofft(buf+4, NULL, 0):-1;
-
- if(instate == FTP_SIZE) {
-#ifdef CURL_FTP_HTTPSTYLE_HEAD
- if(-1 != filesize) {
- snprintf(buf, sizeof(data->state.buffer),
- "Content-Length: %" CURL_FORMAT_CURL_OFF_T "\r\n", filesize);
- result = Curl_client_write(conn, CLIENTWRITE_BOTH, buf, 0);
- if(result)
- return result;
- }
-#endif
- Curl_pgrsSetDownloadSize(data, filesize);
- result = ftp_state_rest(conn);
- }
- else if(instate == FTP_RETR_SIZE) {
- Curl_pgrsSetDownloadSize(data, filesize);
- result = ftp_state_retr(conn, filesize);
- }
- else if(instate == FTP_STOR_SIZE) {
- data->state.resume_from = filesize;
- result = ftp_state_ul_setup(conn, TRUE);
- }
-
- return result;
-}
-
-static CURLcode ftp_state_rest_resp(struct connectdata *conn,
- int ftpcode,
- ftpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- switch(instate) {
- case FTP_REST:
- default:
-#ifdef CURL_FTP_HTTPSTYLE_HEAD
- if(ftpcode == 350) {
- char buffer[24]= { "Accept-ranges: bytes\r\n" };
- result = Curl_client_write(conn, CLIENTWRITE_BOTH, buffer, 0);
- if(result)
- return result;
- }
-#endif
- result = ftp_state_prepare_transfer(conn);
- break;
-
- case FTP_RETR_REST:
- if(ftpcode != 350) {
- failf(conn->data, "Couldn't use REST");
- result = CURLE_FTP_COULDNT_USE_REST;
- }
- else {
- PPSENDF(&ftpc->pp, "RETR %s", ftpc->file);
- state(conn, FTP_RETR);
- }
- break;
- }
-
- return result;
-}
-
-static CURLcode ftp_state_stor_resp(struct connectdata *conn,
- int ftpcode, ftpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
-
- if(ftpcode>=400) {
- failf(data, "Failed FTP upload: %0d", ftpcode);
- state(conn, FTP_STOP);
- /* oops, we never close the sockets! */
- return CURLE_UPLOAD_FAILED;
- }
-
- conn->proto.ftpc.state_saved = instate;
-
- /* PORT means we are now awaiting the server to connect to us. */
- if(data->set.ftp_use_port) {
- bool connected;
-
- state(conn, FTP_STOP); /* no longer in STOR state */
-
- result = AllowServerConnect(conn, &connected);
- if(result)
- return result;
-
- if(!connected) {
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- infof(data, "Data conn was not available immediately\n");
- ftpc->wait_data_conn = TRUE;
- }
-
- return CURLE_OK;
- }
- else
- return InitiateTransfer(conn);
-}
-
-/* for LIST and RETR responses */
-static CURLcode ftp_state_get_resp(struct connectdata *conn,
- int ftpcode,
- ftpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct FTP *ftp = data->req.protop;
- char *buf = data->state.buffer;
-
- if((ftpcode == 150) || (ftpcode == 125)) {
-
- /*
- A;
- 150 Opening BINARY mode data connection for /etc/passwd (2241
- bytes). (ok, the file is being transferred)
-
- B:
- 150 Opening ASCII mode data connection for /bin/ls
-
- C:
- 150 ASCII data connection for /bin/ls (137.167.104.91,37445) (0 bytes).
-
- D:
- 150 Opening ASCII mode data connection for [file] (0.0.0.0,0) (545 bytes)
-
- E:
- 125 Data connection already open; Transfer starting. */
-
- curl_off_t size=-1; /* default unknown size */
-
-
- /*
- * It appears that there are FTP-servers that return size 0 for files when
- * SIZE is used on the file while being in BINARY mode. To work around
- * that (stupid) behavior, we attempt to parse the RETR response even if
- * the SIZE returned size zero.
- *
- * Debugging help from Salvatore Sorrentino on February 26, 2003.
- */
-
- if((instate != FTP_LIST) &&
- !data->set.prefer_ascii &&
- (ftp->downloadsize < 1)) {
- /*
- * It seems directory listings either don't show the size or very
- * often uses size 0 anyway. ASCII transfers may very well turn out
- * that the transferred amount of data is not the same as this line
- * tells, why using this number in those cases only confuses us.
- *
- * Example D above makes this parsing a little tricky */
- char *bytes;
- bytes=strstr(buf, " bytes");
- if(bytes--) {
- long in=(long)(bytes-buf);
- /* this is a hint there is size information in there! ;-) */
- while(--in) {
- /* scan for the left parenthesis and break there */
- if('(' == *bytes)
- break;
- /* skip only digits */
- if(!ISDIGIT(*bytes)) {
- bytes=NULL;
- break;
- }
- /* one more estep backwards */
- bytes--;
- }
- /* if we have nothing but digits: */
- if(bytes++) {
- /* get the number! */
- size = curlx_strtoofft(bytes, NULL, 0);
- }
- }
- }
- else if(ftp->downloadsize > -1)
- size = ftp->downloadsize;
-
- if(size > data->req.maxdownload && data->req.maxdownload > 0)
- size = data->req.size = data->req.maxdownload;
- else if((instate != FTP_LIST) && (data->set.prefer_ascii))
- size = -1; /* kludge for servers that understate ASCII mode file size */
-
- infof(data, "Maxdownload = %" CURL_FORMAT_CURL_OFF_T "\n",
- data->req.maxdownload);
-
- if(instate != FTP_LIST)
- infof(data, "Getting file with size: %" CURL_FORMAT_CURL_OFF_T "\n",
- size);
-
- /* FTP download: */
- conn->proto.ftpc.state_saved = instate;
- conn->proto.ftpc.retr_size_saved = size;
-
- if(data->set.ftp_use_port) {
- bool connected;
-
- result = AllowServerConnect(conn, &connected);
- if(result)
- return result;
-
- if(!connected) {
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- infof(data, "Data conn was not available immediately\n");
- state(conn, FTP_STOP);
- ftpc->wait_data_conn = TRUE;
- }
- }
- else
- return InitiateTransfer(conn);
- }
- else {
- if((instate == FTP_LIST) && (ftpcode == 450)) {
- /* simply no matching files in the dir listing */
- ftp->transfer = FTPTRANSFER_NONE; /* don't download anything */
- state(conn, FTP_STOP); /* this phase is over */
- }
- else {
- failf(data, "RETR response: %03d", ftpcode);
- return instate == FTP_RETR && ftpcode == 550?
- CURLE_REMOTE_FILE_NOT_FOUND:
- CURLE_FTP_COULDNT_RETR_FILE;
- }
- }
-
- return result;
-}
-
-/* after USER, PASS and ACCT */
-static CURLcode ftp_state_loggedin(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
-
- if(conn->ssl[FIRSTSOCKET].use) {
- /* PBSZ = PROTECTION BUFFER SIZE.
-
- The 'draft-murray-auth-ftp-ssl' (draft 12, page 7) says:
-
- Specifically, the PROT command MUST be preceded by a PBSZ
- command and a PBSZ command MUST be preceded by a successful
- security data exchange (the TLS negotiation in this case)
-
- ... (and on page 8):
-
- Thus the PBSZ command must still be issued, but must have a
- parameter of '0' to indicate that no buffering is taking place
- and the data connection should not be encapsulated.
- */
- PPSENDF(&conn->proto.ftpc.pp, "PBSZ %d", 0);
- state(conn, FTP_PBSZ);
- }
- else {
- result = ftp_state_pwd(conn);
- }
- return result;
-}
-
-/* for USER and PASS responses */
-static CURLcode ftp_state_user_resp(struct connectdata *conn,
- int ftpcode,
- ftpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct FTP *ftp = data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- (void)instate; /* no use for this yet */
-
- /* some need password anyway, and others just return 2xx ignored */
- if((ftpcode == 331) && (ftpc->state == FTP_USER)) {
- /* 331 Password required for ...
- (the server requires to send the user's password too) */
- PPSENDF(&ftpc->pp, "PASS %s", ftp->passwd?ftp->passwd:"");
- state(conn, FTP_PASS);
- }
- else if(ftpcode/100 == 2) {
- /* 230 User ... logged in.
- (the user logged in with or without password) */
- result = ftp_state_loggedin(conn);
- }
- else if(ftpcode == 332) {
- if(data->set.str[STRING_FTP_ACCOUNT]) {
- PPSENDF(&ftpc->pp, "ACCT %s", data->set.str[STRING_FTP_ACCOUNT]);
- state(conn, FTP_ACCT);
- }
- else {
- failf(data, "ACCT requested but none available");
- result = CURLE_LOGIN_DENIED;
- }
- }
- else {
- /* All other response codes, like:
-
- 530 User ... access denied
- (the server denies to log the specified user) */
-
- if(conn->data->set.str[STRING_FTP_ALTERNATIVE_TO_USER] &&
- !conn->data->state.ftp_trying_alternative) {
- /* Ok, USER failed. Let's try the supplied command. */
- PPSENDF(&conn->proto.ftpc.pp, "%s",
- conn->data->set.str[STRING_FTP_ALTERNATIVE_TO_USER]);
- conn->data->state.ftp_trying_alternative = TRUE;
- state(conn, FTP_USER);
- result = CURLE_OK;
- }
- else {
- failf(data, "Access denied: %03d", ftpcode);
- result = CURLE_LOGIN_DENIED;
- }
- }
- return result;
-}
-
-/* for ACCT response */
-static CURLcode ftp_state_acct_resp(struct connectdata *conn,
- int ftpcode)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- if(ftpcode != 230) {
- failf(data, "ACCT rejected by server: %03d", ftpcode);
- result = CURLE_FTP_WEIRD_PASS_REPLY; /* FIX */
- }
- else
- result = ftp_state_loggedin(conn);
-
- return result;
-}
-
-
-static CURLcode ftp_statemach_act(struct connectdata *conn)
-{
- CURLcode result;
- curl_socket_t sock = conn->sock[FIRSTSOCKET];
- struct SessionHandle *data=conn->data;
- int ftpcode;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
- static const char ftpauth[][4] = { "SSL", "TLS" };
- size_t nread = 0;
-
- if(pp->sendleft)
- return Curl_pp_flushsend(pp);
-
- result = ftp_readresp(sock, pp, &ftpcode, &nread);
- if(result)
- return result;
-
- if(ftpcode) {
- /* we have now received a full FTP server response */
- switch(ftpc->state) {
- case FTP_WAIT220:
- if(ftpcode == 230)
- /* 230 User logged in - already! */
- return ftp_state_user_resp(conn, ftpcode, ftpc->state);
- else if(ftpcode != 220) {
- failf(data, "Got a %03d ftp-server response when 220 was expected",
- ftpcode);
- return CURLE_FTP_WEIRD_SERVER_REPLY;
- }
-
- /* We have received a 220 response fine, now we proceed. */
-#ifdef HAVE_GSSAPI
- if(data->set.krb) {
- /* If not anonymous login, try a secure login. Note that this
- procedure is still BLOCKING. */
-
- Curl_sec_request_prot(conn, "private");
- /* We set private first as default, in case the line below fails to
- set a valid level */
- Curl_sec_request_prot(conn, data->set.str[STRING_KRB_LEVEL]);
-
- if(Curl_sec_login(conn) != CURLE_OK)
- infof(data, "Logging in with password in cleartext!\n");
- else
- infof(data, "Authentication successful\n");
- }
-#endif
-
- if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
- /* We don't have a SSL/TLS connection yet, but FTPS is
- requested. Try a FTPS connection now */
-
- ftpc->count3=0;
- switch(data->set.ftpsslauth) {
- case CURLFTPAUTH_DEFAULT:
- case CURLFTPAUTH_SSL:
- ftpc->count2 = 1; /* add one to get next */
- ftpc->count1 = 0;
- break;
- case CURLFTPAUTH_TLS:
- ftpc->count2 = -1; /* subtract one to get next */
- ftpc->count1 = 1;
- break;
- default:
- failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d",
- (int)data->set.ftpsslauth);
- return CURLE_UNKNOWN_OPTION; /* we don't know what to do */
- }
- PPSENDF(&ftpc->pp, "AUTH %s", ftpauth[ftpc->count1]);
- state(conn, FTP_AUTH);
- }
- else {
- result = ftp_state_user(conn);
- if(result)
- return result;
- }
-
- break;
-
- case FTP_AUTH:
- /* we have gotten the response to a previous AUTH command */
-
- /* RFC2228 (page 5) says:
- *
- * If the server is willing to accept the named security mechanism,
- * and does not require any security data, it must respond with
- * reply code 234/334.
- */
-
- if((ftpcode == 234) || (ftpcode == 334)) {
- /* Curl_ssl_connect is BLOCKING */
- result = Curl_ssl_connect(conn, FIRSTSOCKET);
- if(CURLE_OK == result) {
- conn->ssl[SECONDARYSOCKET].use = FALSE; /* clear-text data */
- result = ftp_state_user(conn);
- }
- }
- else if(ftpc->count3 < 1) {
- ftpc->count3++;
- ftpc->count1 += ftpc->count2; /* get next attempt */
- result = Curl_pp_sendf(&ftpc->pp, "AUTH %s", ftpauth[ftpc->count1]);
- /* remain in this same state */
- }
- else {
- if(data->set.use_ssl > CURLUSESSL_TRY)
- /* we failed and CURLUSESSL_CONTROL or CURLUSESSL_ALL is set */
- result = CURLE_USE_SSL_FAILED;
- else
- /* ignore the failure and continue */
- result = ftp_state_user(conn);
- }
-
- if(result)
- return result;
- break;
-
- case FTP_USER:
- case FTP_PASS:
- result = ftp_state_user_resp(conn, ftpcode, ftpc->state);
- break;
-
- case FTP_ACCT:
- result = ftp_state_acct_resp(conn, ftpcode);
- break;
-
- case FTP_PBSZ:
- PPSENDF(&ftpc->pp, "PROT %c",
- data->set.use_ssl == CURLUSESSL_CONTROL ? 'C' : 'P');
- state(conn, FTP_PROT);
-
- break;
-
- case FTP_PROT:
- if(ftpcode/100 == 2)
- /* We have enabled SSL for the data connection! */
- conn->ssl[SECONDARYSOCKET].use =
- (data->set.use_ssl != CURLUSESSL_CONTROL) ? TRUE : FALSE;
- /* FTP servers typically responds with 500 if they decide to reject
- our 'P' request */
- else if(data->set.use_ssl > CURLUSESSL_CONTROL)
- /* we failed and bails out */
- return CURLE_USE_SSL_FAILED;
-
- if(data->set.ftp_ccc) {
- /* CCC - Clear Command Channel
- */
- PPSENDF(&ftpc->pp, "%s", "CCC");
- state(conn, FTP_CCC);
- }
- else {
- result = ftp_state_pwd(conn);
- if(result)
- return result;
- }
- break;
-
- case FTP_CCC:
- if(ftpcode < 500) {
- /* First shut down the SSL layer (note: this call will block) */
- result = Curl_ssl_shutdown(conn, FIRSTSOCKET);
-
- if(result) {
- failf(conn->data, "Failed to clear the command channel (CCC)");
- return result;
- }
- }
-
- /* Then continue as normal */
- result = ftp_state_pwd(conn);
- if(result)
- return result;
- break;
-
- case FTP_PWD:
- if(ftpcode == 257) {
- char *ptr=&data->state.buffer[4]; /* start on the first letter */
- char *dir;
- char *store;
-
- dir = malloc(nread + 1);
- if(!dir)
- return CURLE_OUT_OF_MEMORY;
-
- /* Reply format is like
- 257<space>[rubbish]"<directory-name>"<space><commentary> and the
- RFC959 says
-
- The directory name can contain any character; embedded
- double-quotes should be escaped by double-quotes (the
- "quote-doubling" convention).
- */
-
- /* scan for the first double-quote for non-standard responses */
- while(ptr < &data->state.buffer[sizeof(data->state.buffer)]
- && *ptr != '\n' && *ptr != '\0' && *ptr != '"')
- ptr++;
-
- if('\"' == *ptr) {
- /* it started good */
- ptr++;
- for(store = dir; *ptr;) {
- if('\"' == *ptr) {
- if('\"' == ptr[1]) {
- /* "quote-doubling" */
- *store = ptr[1];
- ptr++;
- }
- else {
- /* end of path */
- *store = '\0'; /* zero terminate */
- break; /* get out of this loop */
- }
- }
- else
- *store = *ptr;
- store++;
- ptr++;
- }
-
- /* If the path name does not look like an absolute path (i.e.: it
- does not start with a '/'), we probably need some server-dependent
- adjustments. For example, this is the case when connecting to
- an OS400 FTP server: this server supports two name syntaxes,
- the default one being incompatible with standard pathes. In
- addition, this server switches automatically to the regular path
- syntax when one is encountered in a command: this results in
- having an entrypath in the wrong syntax when later used in CWD.
- The method used here is to check the server OS: we do it only
- if the path name looks strange to minimize overhead on other
- systems. */
-
- if(!ftpc->server_os && dir[0] != '/') {
-
- result = Curl_pp_sendf(&ftpc->pp, "%s", "SYST");
- if(result != CURLE_OK) {
- free(dir);
- return result;
- }
- Curl_safefree(ftpc->entrypath);
- ftpc->entrypath = dir; /* remember this */
- infof(data, "Entry path is '%s'\n", ftpc->entrypath);
- /* also save it where getinfo can access it: */
- data->state.most_recent_ftp_entrypath = ftpc->entrypath;
- state(conn, FTP_SYST);
- break;
- }
-
- Curl_safefree(ftpc->entrypath);
- ftpc->entrypath = dir; /* remember this */
- infof(data, "Entry path is '%s'\n", ftpc->entrypath);
- /* also save it where getinfo can access it: */
- data->state.most_recent_ftp_entrypath = ftpc->entrypath;
- }
- else {
- /* couldn't get the path */
- free(dir);
- infof(data, "Failed to figure out path\n");
- }
- }
- state(conn, FTP_STOP); /* we are done with the CONNECT phase! */
- DEBUGF(infof(data, "protocol connect phase DONE\n"));
- break;
-
- case FTP_SYST:
- if(ftpcode == 215) {
- char *ptr=&data->state.buffer[4]; /* start on the first letter */
- char *os;
- char *store;
-
- os = malloc(nread + 1);
- if(!os)
- return CURLE_OUT_OF_MEMORY;
-
- /* Reply format is like
- 215<space><OS-name><space><commentary>
- */
- while(*ptr == ' ')
- ptr++;
- for(store = os; *ptr && *ptr != ' ';)
- *store++ = *ptr++;
- *store = '\0'; /* zero terminate */
-
- /* Check for special servers here. */
-
- if(strequal(os, "OS/400")) {
- /* Force OS400 name format 1. */
- result = Curl_pp_sendf(&ftpc->pp, "%s", "SITE NAMEFMT 1");
- if(result != CURLE_OK) {
- free(os);
- return result;
- }
- /* remember target server OS */
- Curl_safefree(ftpc->server_os);
- ftpc->server_os = os;
- state(conn, FTP_NAMEFMT);
- break;
- }
- else {
- /* Nothing special for the target server. */
- /* remember target server OS */
- Curl_safefree(ftpc->server_os);
- ftpc->server_os = os;
- }
- }
- else {
- /* Cannot identify server OS. Continue anyway and cross fingers. */
- }
-
- state(conn, FTP_STOP); /* we are done with the CONNECT phase! */
- DEBUGF(infof(data, "protocol connect phase DONE\n"));
- break;
-
- case FTP_NAMEFMT:
- if(ftpcode == 250) {
- /* Name format change successful: reload initial path. */
- ftp_state_pwd(conn);
- break;
- }
-
- state(conn, FTP_STOP); /* we are done with the CONNECT phase! */
- DEBUGF(infof(data, "protocol connect phase DONE\n"));
- break;
-
- case FTP_QUOTE:
- case FTP_POSTQUOTE:
- case FTP_RETR_PREQUOTE:
- case FTP_STOR_PREQUOTE:
- if((ftpcode >= 400) && !ftpc->count2) {
- /* failure response code, and not allowed to fail */
- failf(conn->data, "QUOT command failed with %03d", ftpcode);
- return CURLE_QUOTE_ERROR;
- }
- result = ftp_state_quote(conn, FALSE, ftpc->state);
- if(result)
- return result;
-
- break;
-
- case FTP_CWD:
- if(ftpcode/100 != 2) {
- /* failure to CWD there */
- if(conn->data->set.ftp_create_missing_dirs &&
- ftpc->count1 && !ftpc->count2) {
- /* try making it */
- ftpc->count2++; /* counter to prevent CWD-MKD loops */
- PPSENDF(&ftpc->pp, "MKD %s", ftpc->dirs[ftpc->count1 - 1]);
- state(conn, FTP_MKD);
- }
- else {
- /* return failure */
- failf(data, "Server denied you to change to the given directory");
- ftpc->cwdfail = TRUE; /* don't remember this path as we failed
- to enter it */
- return CURLE_REMOTE_ACCESS_DENIED;
- }
- }
- else {
- /* success */
- ftpc->count2=0;
- if(++ftpc->count1 <= ftpc->dirdepth) {
- /* send next CWD */
- PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
- }
- else {
- result = ftp_state_mdtm(conn);
- if(result)
- return result;
- }
- }
- break;
-
- case FTP_MKD:
- if((ftpcode/100 != 2) && !ftpc->count3--) {
- /* failure to MKD the dir */
- failf(data, "Failed to MKD dir: %03d", ftpcode);
- return CURLE_REMOTE_ACCESS_DENIED;
- }
- state(conn, FTP_CWD);
- /* send CWD */
- PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
- break;
-
- case FTP_MDTM:
- result = ftp_state_mdtm_resp(conn, ftpcode);
- break;
-
- case FTP_TYPE:
- case FTP_LIST_TYPE:
- case FTP_RETR_TYPE:
- case FTP_STOR_TYPE:
- result = ftp_state_type_resp(conn, ftpcode, ftpc->state);
- break;
-
- case FTP_SIZE:
- case FTP_RETR_SIZE:
- case FTP_STOR_SIZE:
- result = ftp_state_size_resp(conn, ftpcode, ftpc->state);
- break;
-
- case FTP_REST:
- case FTP_RETR_REST:
- result = ftp_state_rest_resp(conn, ftpcode, ftpc->state);
- break;
-
- case FTP_PRET:
- if(ftpcode != 200) {
- /* there only is this one standard OK return code. */
- failf(data, "PRET command not accepted: %03d", ftpcode);
- return CURLE_FTP_PRET_FAILED;
- }
- result = ftp_state_use_pasv(conn);
- break;
-
- case FTP_PASV:
- result = ftp_state_pasv_resp(conn, ftpcode);
- break;
-
- case FTP_PORT:
- result = ftp_state_port_resp(conn, ftpcode);
- break;
-
- case FTP_LIST:
- case FTP_RETR:
- result = ftp_state_get_resp(conn, ftpcode, ftpc->state);
- break;
-
- case FTP_STOR:
- result = ftp_state_stor_resp(conn, ftpcode, ftpc->state);
- break;
-
- case FTP_QUIT:
- /* fallthrough, just stop! */
- default:
- /* internal error */
- state(conn, FTP_STOP);
- break;
- }
- } /* if(ftpcode) */
-
- return result;
-}
-
-
-/* called repeatedly until done from multi.c */
-static CURLcode ftp_multi_statemach(struct connectdata *conn,
- bool *done)
-{
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- CURLcode result = Curl_pp_statemach(&ftpc->pp, FALSE);
-
- /* Check for the state outside of the Curl_socket_ready() return code checks
- since at times we are in fact already in this state when this function
- gets called. */
- *done = (ftpc->state == FTP_STOP) ? TRUE : FALSE;
-
- return result;
-}
-
-static CURLcode ftp_block_statemach(struct connectdata *conn)
-{
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
- CURLcode result = CURLE_OK;
-
- while(ftpc->state != FTP_STOP) {
- result = Curl_pp_statemach(pp, TRUE);
- if(result)
- break;
- }
-
- return result;
-}
-
-/*
- * ftp_connect() should do everything that is to be considered a part of
- * the connection phase.
- *
- * The variable 'done' points to will be TRUE if the protocol-layer connect
- * phase is done when this function returns, or FALSE if not.
- *
- */
-static CURLcode ftp_connect(struct connectdata *conn,
- bool *done) /* see description above */
-{
- CURLcode result;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
-
- *done = FALSE; /* default to not done yet */
-
- /* We always support persistent connections on ftp */
- connkeep(conn, "FTP default");
-
- pp->response_time = RESP_TIMEOUT; /* set default response time-out */
- pp->statemach_act = ftp_statemach_act;
- pp->endofresp = ftp_endofresp;
- pp->conn = conn;
-
- if(conn->handler->flags & PROTOPT_SSL) {
- /* BLOCKING */
- result = Curl_ssl_connect(conn, FIRSTSOCKET);
- if(result)
- return result;
- }
-
- Curl_pp_init(pp); /* init the generic pingpong data */
-
- /* When we connect, we start in the state where we await the 220
- response */
- state(conn, FTP_WAIT220);
-
- result = ftp_multi_statemach(conn, done);
-
- return result;
-}
-
-/***********************************************************************
- *
- * ftp_done()
- *
- * The DONE function. This does what needs to be done after a single DO has
- * performed.
- *
- * Input argument is already checked for validity.
- */
-static CURLcode ftp_done(struct connectdata *conn, CURLcode status,
- bool premature)
-{
- struct SessionHandle *data = conn->data;
- struct FTP *ftp = data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
- ssize_t nread;
- int ftpcode;
- CURLcode result = CURLE_OK;
- bool was_ctl_valid = ftpc->ctl_valid;
- char *path;
- const char *path_to_use = data->state.path;
-
- if(!ftp)
- /* When the easy handle is removed from the multi while libcurl is still
- * trying to resolve the host name, it seems that the ftp struct is not
- * yet initialized, but the removal action calls Curl_done() which calls
- * this function. So we simply return success if no ftp pointer is set.
- */
- return CURLE_OK;
-
- switch(status) {
- case CURLE_BAD_DOWNLOAD_RESUME:
- case CURLE_FTP_WEIRD_PASV_REPLY:
- case CURLE_FTP_PORT_FAILED:
- case CURLE_FTP_ACCEPT_FAILED:
- case CURLE_FTP_ACCEPT_TIMEOUT:
- case CURLE_FTP_COULDNT_SET_TYPE:
- case CURLE_FTP_COULDNT_RETR_FILE:
- case CURLE_PARTIAL_FILE:
- case CURLE_UPLOAD_FAILED:
- case CURLE_REMOTE_ACCESS_DENIED:
- case CURLE_FILESIZE_EXCEEDED:
- case CURLE_REMOTE_FILE_NOT_FOUND:
- case CURLE_WRITE_ERROR:
- /* the connection stays alive fine even though this happened */
- /* fall-through */
- case CURLE_OK: /* doesn't affect the control connection's status */
- if(!premature) {
- ftpc->ctl_valid = was_ctl_valid;
- break;
- }
- /* until we cope better with prematurely ended requests, let them
- * fallback as if in complete failure */
- default: /* by default, an error means the control connection is
- wedged and should not be used anymore */
- ftpc->ctl_valid = FALSE;
- ftpc->cwdfail = TRUE; /* set this TRUE to prevent us to remember the
- current path, as this connection is going */
- connclose(conn, "FTP ended with bad error code");
- result = status; /* use the already set error code */
- break;
- }
-
- /* now store a copy of the directory we are in */
- if(ftpc->prevpath)
- free(ftpc->prevpath);
-
- if(data->set.wildcardmatch) {
- if(data->set.chunk_end && ftpc->file) {
- data->set.chunk_end(data->wildcard.customptr);
- }
- ftpc->known_filesize = -1;
- }
-
- /* get the "raw" path */
- path = curl_easy_unescape(data, path_to_use, 0, NULL);
- if(!path) {
- /* out of memory, but we can limp along anyway (and should try to
- * since we may already be in the out of memory cleanup path) */
- if(!result)
- result = CURLE_OUT_OF_MEMORY;
- ftpc->ctl_valid = FALSE; /* mark control connection as bad */
- connclose(conn, "FTP: out of memory!"); /* mark for connection closure */
- ftpc->prevpath = NULL; /* no path remembering */
- }
- else {
- size_t flen = ftpc->file?strlen(ftpc->file):0; /* file is "raw" already */
- size_t dlen = strlen(path)-flen;
- if(!ftpc->cwdfail) {
- if(dlen && (data->set.ftp_filemethod != FTPFILE_NOCWD)) {
- ftpc->prevpath = path;
- if(flen)
- /* if 'path' is not the whole string */
- ftpc->prevpath[dlen]=0; /* terminate */
- }
- else {
- /* we never changed dir */
- ftpc->prevpath=strdup("");
- free(path);
- }
- if(ftpc->prevpath)
- infof(data, "Remembering we are in dir \"%s\"\n", ftpc->prevpath);
- }
- else {
- ftpc->prevpath = NULL; /* no path */
- free(path);
- }
- }
- /* free the dir tree and file parts */
- freedirs(ftpc);
-
- /* shut down the socket to inform the server we're done */
-
-#ifdef _WIN32_WCE
- shutdown(conn->sock[SECONDARYSOCKET],2); /* SD_BOTH */
-#endif
-
- if(conn->sock[SECONDARYSOCKET] != CURL_SOCKET_BAD) {
- if(!result && ftpc->dont_check && data->req.maxdownload > 0) {
- /* partial download completed */
- result = Curl_pp_sendf(pp, "%s", "ABOR");
- if(result) {
- failf(data, "Failure sending ABOR command: %s",
- curl_easy_strerror(result));
- ftpc->ctl_valid = FALSE; /* mark control connection as bad */
- connclose(conn, "ABOR command failed"); /* connection closure */
- }
- }
-
- if(conn->ssl[SECONDARYSOCKET].use) {
- /* The secondary socket is using SSL so we must close down that part
- first before we close the socket for real */
- Curl_ssl_close(conn, SECONDARYSOCKET);
-
- /* Note that we keep "use" set to TRUE since that (next) connection is
- still requested to use SSL */
- }
- if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET]) {
- Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
- conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
- conn->bits.tcpconnect[SECONDARYSOCKET] = FALSE;
- }
- }
-
- if(!result && (ftp->transfer == FTPTRANSFER_BODY) && ftpc->ctl_valid &&
- pp->pending_resp && !premature) {
- /*
- * Let's see what the server says about the transfer we just performed,
- * but lower the timeout as sometimes this connection has died while the
- * data has been transferred. This happens when doing through NATs etc that
- * abandon old silent connections.
- */
- long old_time = pp->response_time;
-
- pp->response_time = 60*1000; /* give it only a minute for now */
- pp->response = Curl_tvnow(); /* timeout relative now */
-
- result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
-
- pp->response_time = old_time; /* set this back to previous value */
-
- if(!nread && (CURLE_OPERATION_TIMEDOUT == result)) {
- failf(data, "control connection looks dead");
- ftpc->ctl_valid = FALSE; /* mark control connection as bad */
- connclose(conn, "Timeout or similar in FTP DONE operation"); /* close */
- }
-
- if(result)
- return result;
-
- if(ftpc->dont_check && data->req.maxdownload > 0) {
- /* we have just sent ABOR and there is no reliable way to check if it was
- * successful or not; we have to close the connection now */
- infof(data, "partial download completed, closing connection\n");
- connclose(conn, "Partial download with no ability to check");
- return result;
- }
-
- if(!ftpc->dont_check) {
- /* 226 Transfer complete, 250 Requested file action okay, completed. */
- if((ftpcode != 226) && (ftpcode != 250)) {
- failf(data, "server did not report OK, got %d", ftpcode);
- result = CURLE_PARTIAL_FILE;
- }
- }
- }
-
- if(result || premature)
- /* the response code from the transfer showed an error already so no
- use checking further */
- ;
- else if(data->set.upload) {
- if((-1 != data->state.infilesize) &&
- (data->state.infilesize != *ftp->bytecountp) &&
- !data->set.crlf &&
- (ftp->transfer == FTPTRANSFER_BODY)) {
- failf(data, "Uploaded unaligned file size (%" CURL_FORMAT_CURL_OFF_T
- " out of %" CURL_FORMAT_CURL_OFF_T " bytes)",
- *ftp->bytecountp, data->state.infilesize);
- result = CURLE_PARTIAL_FILE;
- }
- }
- else {
- if((-1 != data->req.size) &&
- (data->req.size != *ftp->bytecountp) &&
-#ifdef CURL_DO_LINEEND_CONV
- /* Most FTP servers don't adjust their file SIZE response for CRLFs, so
- * we'll check to see if the discrepancy can be explained by the number
- * of CRLFs we've changed to LFs.
- */
- ((data->req.size + data->state.crlf_conversions) !=
- *ftp->bytecountp) &&
-#endif /* CURL_DO_LINEEND_CONV */
- (data->req.maxdownload != *ftp->bytecountp)) {
- failf(data, "Received only partial file: %" CURL_FORMAT_CURL_OFF_T
- " bytes", *ftp->bytecountp);
- result = CURLE_PARTIAL_FILE;
- }
- else if(!ftpc->dont_check &&
- !*ftp->bytecountp &&
- (data->req.size>0)) {
- failf(data, "No data was received!");
- result = CURLE_FTP_COULDNT_RETR_FILE;
- }
- }
-
- /* clear these for next connection */
- ftp->transfer = FTPTRANSFER_BODY;
- ftpc->dont_check = FALSE;
-
- /* Send any post-transfer QUOTE strings? */
- if(!status && !result && !premature && data->set.postquote)
- result = ftp_sendquote(conn, data->set.postquote);
-
- return result;
-}
-
-/***********************************************************************
- *
- * ftp_sendquote()
- *
- * Where a 'quote' means a list of custom commands to send to the server.
- * The quote list is passed as an argument.
- *
- * BLOCKING
- */
-
-static
-CURLcode ftp_sendquote(struct connectdata *conn, struct curl_slist *quote)
-{
- struct curl_slist *item;
- ssize_t nread;
- int ftpcode;
- CURLcode result;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
-
- item = quote;
- while(item) {
- if(item->data) {
- char *cmd = item->data;
- bool acceptfail = FALSE;
-
- /* if a command starts with an asterisk, which a legal FTP command never
- can, the command will be allowed to fail without it causing any
- aborts or cancels etc. It will cause libcurl to act as if the command
- is successful, whatever the server reponds. */
-
- if(cmd[0] == '*') {
- cmd++;
- acceptfail = TRUE;
- }
-
- PPSENDF(&conn->proto.ftpc.pp, "%s", cmd);
-
- pp->response = Curl_tvnow(); /* timeout relative now */
-
- result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
- if(result)
- return result;
-
- if(!acceptfail && (ftpcode >= 400)) {
- failf(conn->data, "QUOT string not accepted: %s", cmd);
- return CURLE_QUOTE_ERROR;
- }
- }
-
- item = item->next;
- }
-
- return CURLE_OK;
-}
-
-/***********************************************************************
- *
- * ftp_need_type()
- *
- * Returns TRUE if we in the current situation should send TYPE
- */
-static int ftp_need_type(struct connectdata *conn,
- bool ascii_wanted)
-{
- return conn->proto.ftpc.transfertype != (ascii_wanted?'A':'I');
-}
-
-/***********************************************************************
- *
- * ftp_nb_type()
- *
- * Set TYPE. We only deal with ASCII or BINARY so this function
- * sets one of them.
- * If the transfer type is not sent, simulate on OK response in newstate
- */
-static CURLcode ftp_nb_type(struct connectdata *conn,
- bool ascii, ftpstate newstate)
-{
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- CURLcode result;
- char want = (char)(ascii?'A':'I');
-
- if(ftpc->transfertype == want) {
- state(conn, newstate);
- return ftp_state_type_resp(conn, 200, newstate);
- }
-
- PPSENDF(&ftpc->pp, "TYPE %c", want);
- state(conn, newstate);
-
- /* keep track of our current transfer type */
- ftpc->transfertype = want;
- return CURLE_OK;
-}
-
-/***************************************************************************
- *
- * ftp_pasv_verbose()
- *
- * This function only outputs some informationals about this second connection
- * when we've issued a PASV command before and thus we have connected to a
- * possibly new IP address.
- *
- */
-#ifndef CURL_DISABLE_VERBOSE_STRINGS
-static void
-ftp_pasv_verbose(struct connectdata *conn,
- Curl_addrinfo *ai,
- char *newhost, /* ascii version */
- int port)
-{
- char buf[256];
- Curl_printable_address(ai, buf, sizeof(buf));
- infof(conn->data, "Connecting to %s (%s) port %d\n", newhost, buf, port);
-}
-#endif
-
-/*
- Check if this is a range download, and if so, set the internal variables
- properly.
- */
-
-static CURLcode ftp_range(struct connectdata *conn)
-{
- curl_off_t from, to;
- char *ptr;
- char *ptr2;
- struct SessionHandle *data = conn->data;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- if(data->state.use_range && data->state.range) {
- from=curlx_strtoofft(data->state.range, &ptr, 0);
- while(*ptr && (ISSPACE(*ptr) || (*ptr=='-')))
- ptr++;
- to=curlx_strtoofft(ptr, &ptr2, 0);
- if(ptr == ptr2) {
- /* we didn't get any digit */
- to=-1;
- }
- if((-1 == to) && (from>=0)) {
- /* X - */
- data->state.resume_from = from;
- DEBUGF(infof(conn->data, "FTP RANGE %" CURL_FORMAT_CURL_OFF_T
- " to end of file\n", from));
- }
- else if(from < 0) {
- /* -Y */
- data->req.maxdownload = -from;
- data->state.resume_from = from;
- DEBUGF(infof(conn->data, "FTP RANGE the last %" CURL_FORMAT_CURL_OFF_T
- " bytes\n", -from));
- }
- else {
- /* X-Y */
- data->req.maxdownload = (to-from)+1; /* include last byte */
- data->state.resume_from = from;
- DEBUGF(infof(conn->data, "FTP RANGE from %" CURL_FORMAT_CURL_OFF_T
- " getting %" CURL_FORMAT_CURL_OFF_T " bytes\n",
- from, data->req.maxdownload));
- }
- DEBUGF(infof(conn->data, "range-download from %" CURL_FORMAT_CURL_OFF_T
- " to %" CURL_FORMAT_CURL_OFF_T ", totally %"
- CURL_FORMAT_CURL_OFF_T " bytes\n",
- from, to, data->req.maxdownload));
- ftpc->dont_check = TRUE; /* dont check for successful transfer */
- }
- else
- data->req.maxdownload = -1;
- return CURLE_OK;
-}
-
-
-/*
- * ftp_do_more()
- *
- * This function shall be called when the second FTP (data) connection is
- * connected.
- *
- * 'complete' can return 0 for incomplete, 1 for done and -1 for go back
- * (which basically is only for when PASV is being sent to retry a failed
- * EPSV).
- */
-
-static CURLcode ftp_do_more(struct connectdata *conn, int *completep)
-{
- struct SessionHandle *data=conn->data;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- CURLcode result = CURLE_OK;
- bool connected = FALSE;
- bool complete = FALSE;
-
- /* the ftp struct is inited in ftp_connect() */
- struct FTP *ftp = data->req.protop;
-
- /* if the second connection isn't done yet, wait for it */
- if(!conn->bits.tcpconnect[SECONDARYSOCKET]) {
- if(conn->tunnel_state[SECONDARYSOCKET] == TUNNEL_CONNECT) {
- /* As we're in TUNNEL_CONNECT state now, we know the proxy name and port
- aren't used so we blank their arguments. TODO: make this nicer */
- result = Curl_proxyCONNECT(conn, SECONDARYSOCKET, NULL, 0);
-
- return result;
- }
-
- result = Curl_is_connected(conn, SECONDARYSOCKET, &connected);
-
- /* Ready to do more? */
- if(connected) {
- DEBUGF(infof(data, "DO-MORE connected phase starts\n"));
- if(conn->bits.proxy) {
- infof(data, "Connection to proxy confirmed\n");
- result = proxy_magic(conn, ftpc->newhost, ftpc->newport, &connected);
- }
- }
- else {
- if(result && (ftpc->count1 == 0)) {
- *completep = -1; /* go back to DOING please */
- /* this is a EPSV connect failing, try PASV instead */
- return ftp_epsv_disable(conn);
- }
- return result;
- }
- }
-
- if(ftpc->state) {
- /* already in a state so skip the intial commands.
- They are only done to kickstart the do_more state */
- result = ftp_multi_statemach(conn, &complete);
-
- *completep = (int)complete;
-
- /* if we got an error or if we don't wait for a data connection return
- immediately */
- if(result || (ftpc->wait_data_conn != TRUE))
- return result;
-
- if(ftpc->wait_data_conn)
- /* if we reach the end of the FTP state machine here, *complete will be
- TRUE but so is ftpc->wait_data_conn, which says we need to wait for
- the data connection and therefore we're not actually complete */
- *completep = 0;
- }
-
- if(ftp->transfer <= FTPTRANSFER_INFO) {
- /* a transfer is about to take place, or if not a file name was given
- so we'll do a SIZE on it later and then we need the right TYPE first */
-
- if(ftpc->wait_data_conn == TRUE) {
- bool serv_conned;
-
- result = ReceivedServerConnect(conn, &serv_conned);
- if(result)
- return result; /* Failed to accept data connection */
-
- if(serv_conned) {
- /* It looks data connection is established */
- result = AcceptServerConnect(conn);
- ftpc->wait_data_conn = FALSE;
- if(!result)
- result = InitiateTransfer(conn);
-
- if(result)
- return result;
-
- *completep = 1; /* this state is now complete when the server has
- connected back to us */
- }
- }
- else if(data->set.upload) {
- result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_STOR_TYPE);
- if(result)
- return result;
-
- result = ftp_multi_statemach(conn, &complete);
- *completep = (int)complete;
- }
- else {
- /* download */
- ftp->downloadsize = -1; /* unknown as of yet */
-
- result = ftp_range(conn);
- if(result)
- ;
- else if(data->set.ftp_list_only || !ftpc->file) {
- /* The specified path ends with a slash, and therefore we think this
- is a directory that is requested, use LIST. But before that we
- need to set ASCII transfer mode. */
-
- /* But only if a body transfer was requested. */
- if(ftp->transfer == FTPTRANSFER_BODY) {
- result = ftp_nb_type(conn, TRUE, FTP_LIST_TYPE);
- if(result)
- return result;
- }
- /* otherwise just fall through */
- }
- else {
- result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_RETR_TYPE);
- if(result)
- return result;
- }
-
- result = ftp_multi_statemach(conn, &complete);
- *completep = (int)complete;
- }
- return result;
- }
-
- if((result == CURLE_OK) && (ftp->transfer != FTPTRANSFER_BODY))
- /* no data to transfer. FIX: it feels like a kludge to have this here
- too! */
- Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
-
- if(!ftpc->wait_data_conn) {
- /* no waiting for the data connection so this is now complete */
- *completep = 1;
- DEBUGF(infof(data, "DO-MORE phase ends with %d\n", (int)result));
- }
-
- return result;
-}
-
-
-
-/***********************************************************************
- *
- * ftp_perform()
- *
- * This is the actual DO function for FTP. Get a file/directory according to
- * the options previously setup.
- */
-
-static
-CURLcode ftp_perform(struct connectdata *conn,
- bool *connected, /* connect status after PASV / PORT */
- bool *dophase_done)
-{
- /* this is FTP and no proxy */
- CURLcode result=CURLE_OK;
-
- DEBUGF(infof(conn->data, "DO phase starts\n"));
-
- if(conn->data->set.opt_no_body) {
- /* requested no body means no transfer... */
- struct FTP *ftp = conn->data->req.protop;
- ftp->transfer = FTPTRANSFER_INFO;
- }
-
- *dophase_done = FALSE; /* not done yet */
-
- /* start the first command in the DO phase */
- result = ftp_state_quote(conn, TRUE, FTP_QUOTE);
- if(result)
- return result;
-
- /* run the state-machine */
- result = ftp_multi_statemach(conn, dophase_done);
-
- *connected = conn->bits.tcpconnect[SECONDARYSOCKET];
-
- infof(conn->data, "ftp_perform ends with SECONDARY: %d\n", *connected);
-
- if(*dophase_done)
- DEBUGF(infof(conn->data, "DO phase is complete1\n"));
-
- return result;
-}
-
-static void wc_data_dtor(void *ptr)
-{
- struct ftp_wc_tmpdata *tmp = ptr;
- if(tmp)
- Curl_ftp_parselist_data_free(&tmp->parser);
- Curl_safefree(tmp);
-}
-
-static CURLcode init_wc_data(struct connectdata *conn)
-{
- char *last_slash;
- char *path = conn->data->state.path;
- struct WildcardData *wildcard = &(conn->data->wildcard);
- CURLcode ret = CURLE_OK;
- struct ftp_wc_tmpdata *ftp_tmp;
-
- last_slash = strrchr(conn->data->state.path, '/');
- if(last_slash) {
- last_slash++;
- if(last_slash[0] == '\0') {
- wildcard->state = CURLWC_CLEAN;
- ret = ftp_parse_url_path(conn);
- return ret;
- }
- else {
- wildcard->pattern = strdup(last_slash);
- if(!wildcard->pattern)
- return CURLE_OUT_OF_MEMORY;
- last_slash[0] = '\0'; /* cut file from path */
- }
- }
- else { /* there is only 'wildcard pattern' or nothing */
- if(path[0]) {
- wildcard->pattern = strdup(path);
- if(!wildcard->pattern)
- return CURLE_OUT_OF_MEMORY;
- path[0] = '\0';
- }
- else { /* only list */
- wildcard->state = CURLWC_CLEAN;
- ret = ftp_parse_url_path(conn);
- return ret;
- }
- }
-
- /* program continues only if URL is not ending with slash, allocate needed
- resources for wildcard transfer */
-
- /* allocate ftp protocol specific temporary wildcard data */
- ftp_tmp = calloc(1, sizeof(struct ftp_wc_tmpdata));
- if(!ftp_tmp) {
- Curl_safefree(wildcard->pattern);
- return CURLE_OUT_OF_MEMORY;
- }
-
- /* INITIALIZE parselist structure */
- ftp_tmp->parser = Curl_ftp_parselist_data_alloc();
- if(!ftp_tmp->parser) {
- Curl_safefree(wildcard->pattern);
- Curl_safefree(ftp_tmp);
- return CURLE_OUT_OF_MEMORY;
- }
-
- wildcard->tmp = ftp_tmp; /* put it to the WildcardData tmp pointer */
- wildcard->tmp_dtor = wc_data_dtor;
-
- /* wildcard does not support NOCWD option (assert it?) */
- if(conn->data->set.ftp_filemethod == FTPFILE_NOCWD)
- conn->data->set.ftp_filemethod = FTPFILE_MULTICWD;
-
- /* try to parse ftp url */
- ret = ftp_parse_url_path(conn);
- if(ret) {
- Curl_safefree(wildcard->pattern);
- wildcard->tmp_dtor(wildcard->tmp);
- wildcard->tmp_dtor = ZERO_NULL;
- wildcard->tmp = NULL;
- return ret;
- }
-
- wildcard->path = strdup(conn->data->state.path);
- if(!wildcard->path) {
- Curl_safefree(wildcard->pattern);
- wildcard->tmp_dtor(wildcard->tmp);
- wildcard->tmp_dtor = ZERO_NULL;
- wildcard->tmp = NULL;
- return CURLE_OUT_OF_MEMORY;
- }
-
- /* backup old write_function */
- ftp_tmp->backup.write_function = conn->data->set.fwrite_func;
- /* parsing write function */
- conn->data->set.fwrite_func = Curl_ftp_parselist;
- /* backup old file descriptor */
- ftp_tmp->backup.file_descriptor = conn->data->set.out;
- /* let the writefunc callback know what curl pointer is working with */
- conn->data->set.out = conn;
-
- infof(conn->data, "Wildcard - Parsing started\n");
- return CURLE_OK;
-}
-
-/* This is called recursively */
-static CURLcode wc_statemach(struct connectdata *conn)
-{
- struct WildcardData * const wildcard = &(conn->data->wildcard);
- CURLcode ret = CURLE_OK;
-
- switch (wildcard->state) {
- case CURLWC_INIT:
- ret = init_wc_data(conn);
- if(wildcard->state == CURLWC_CLEAN)
- /* only listing! */
- break;
- else
- wildcard->state = ret ? CURLWC_ERROR : CURLWC_MATCHING;
- break;
-
- case CURLWC_MATCHING: {
- /* In this state is LIST response successfully parsed, so lets restore
- previous WRITEFUNCTION callback and WRITEDATA pointer */
- struct ftp_wc_tmpdata *ftp_tmp = wildcard->tmp;
- conn->data->set.fwrite_func = ftp_tmp->backup.write_function;
- conn->data->set.out = ftp_tmp->backup.file_descriptor;
- ftp_tmp->backup.write_function = ZERO_NULL;
- ftp_tmp->backup.file_descriptor = NULL;
- wildcard->state = CURLWC_DOWNLOADING;
-
- if(Curl_ftp_parselist_geterror(ftp_tmp->parser)) {
- /* error found in LIST parsing */
- wildcard->state = CURLWC_CLEAN;
- return wc_statemach(conn);
- }
- else if(wildcard->filelist->size == 0) {
- /* no corresponding file */
- wildcard->state = CURLWC_CLEAN;
- return CURLE_REMOTE_FILE_NOT_FOUND;
- }
- return wc_statemach(conn);
- }
-
- case CURLWC_DOWNLOADING: {
- /* filelist has at least one file, lets get first one */
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- struct curl_fileinfo *finfo = wildcard->filelist->head->ptr;
-
- char *tmp_path = aprintf("%s%s", wildcard->path, finfo->filename);
- if(!tmp_path)
- return CURLE_OUT_OF_MEMORY;
-
- /* switch default "state.pathbuffer" and tmp_path, good to see
- ftp_parse_url_path function to understand this trick */
- Curl_safefree(conn->data->state.pathbuffer);
- conn->data->state.pathbuffer = tmp_path;
- conn->data->state.path = tmp_path;
-
- infof(conn->data, "Wildcard - START of \"%s\"\n", finfo->filename);
- if(conn->data->set.chunk_bgn) {
- long userresponse = conn->data->set.chunk_bgn(
- finfo, wildcard->customptr, (int)wildcard->filelist->size);
- switch(userresponse) {
- case CURL_CHUNK_BGN_FUNC_SKIP:
- infof(conn->data, "Wildcard - \"%s\" skipped by user\n",
- finfo->filename);
- wildcard->state = CURLWC_SKIP;
- return wc_statemach(conn);
- case CURL_CHUNK_BGN_FUNC_FAIL:
- return CURLE_CHUNK_FAILED;
- }
- }
-
- if(finfo->filetype != CURLFILETYPE_FILE) {
- wildcard->state = CURLWC_SKIP;
- return wc_statemach(conn);
- }
-
- if(finfo->flags & CURLFINFOFLAG_KNOWN_SIZE)
- ftpc->known_filesize = finfo->size;
-
- ret = ftp_parse_url_path(conn);
- if(ret) {
- return ret;
- }
-
- /* we don't need the Curl_fileinfo of first file anymore */
- Curl_llist_remove(wildcard->filelist, wildcard->filelist->head, NULL);
-
- if(wildcard->filelist->size == 0) { /* remains only one file to down. */
- wildcard->state = CURLWC_CLEAN;
- /* after that will be ftp_do called once again and no transfer
- will be done because of CURLWC_CLEAN state */
- return CURLE_OK;
- }
- } break;
-
- case CURLWC_SKIP: {
- if(conn->data->set.chunk_end)
- conn->data->set.chunk_end(conn->data->wildcard.customptr);
- Curl_llist_remove(wildcard->filelist, wildcard->filelist->head, NULL);
- wildcard->state = (wildcard->filelist->size == 0) ?
- CURLWC_CLEAN : CURLWC_DOWNLOADING;
- return wc_statemach(conn);
- }
-
- case CURLWC_CLEAN: {
- struct ftp_wc_tmpdata *ftp_tmp = wildcard->tmp;
- ret = CURLE_OK;
- if(ftp_tmp) {
- ret = Curl_ftp_parselist_geterror(ftp_tmp->parser);
- }
- wildcard->state = ret ? CURLWC_ERROR : CURLWC_DONE;
- } break;
-
- case CURLWC_DONE:
- case CURLWC_ERROR:
- break;
- }
-
- return ret;
-}
-
-/***********************************************************************
- *
- * ftp_do()
- *
- * This function is registered as 'curl_do' function. It decodes the path
- * parts etc as a wrapper to the actual DO function (ftp_perform).
- *
- * The input argument is already checked for validity.
- */
-static CURLcode ftp_do(struct connectdata *conn, bool *done)
-{
- CURLcode retcode = CURLE_OK;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- *done = FALSE; /* default to false */
- ftpc->wait_data_conn = FALSE; /* default to no such wait */
-
- if(conn->data->set.wildcardmatch) {
- retcode = wc_statemach(conn);
- if(conn->data->wildcard.state == CURLWC_SKIP ||
- conn->data->wildcard.state == CURLWC_DONE) {
- /* do not call ftp_regular_transfer */
- return CURLE_OK;
- }
- if(retcode) /* error, loop or skipping the file */
- return retcode;
- }
- else { /* no wildcard FSM needed */
- retcode = ftp_parse_url_path(conn);
- if(retcode)
- return retcode;
- }
-
- retcode = ftp_regular_transfer(conn, done);
-
- return retcode;
-}
-
-
-CURLcode Curl_ftpsendf(struct connectdata *conn,
- const char *fmt, ...)
-{
- ssize_t bytes_written;
-#define SBUF_SIZE 1024
- char s[SBUF_SIZE];
- size_t write_len;
- char *sptr=s;
- CURLcode res = CURLE_OK;
-#ifdef HAVE_GSSAPI
- enum protection_level data_sec = conn->data_prot;
-#endif
-
- va_list ap;
- va_start(ap, fmt);
- write_len = vsnprintf(s, SBUF_SIZE-3, fmt, ap);
- va_end(ap);
-
- strcpy(&s[write_len], "\r\n"); /* append a trailing CRLF */
- write_len +=2;
-
- bytes_written=0;
-
- res = Curl_convert_to_network(conn->data, s, write_len);
- /* Curl_convert_to_network calls failf if unsuccessful */
- if(res)
- return(res);
-
- for(;;) {
-#ifdef HAVE_GSSAPI
- conn->data_prot = PROT_CMD;
-#endif
- res = Curl_write(conn, conn->sock[FIRSTSOCKET], sptr, write_len,
- &bytes_written);
-#ifdef HAVE_GSSAPI
- DEBUGASSERT(data_sec > PROT_NONE && data_sec < PROT_LAST);
- conn->data_prot = data_sec;
-#endif
-
- if(CURLE_OK != res)
- break;
-
- if(conn->data->set.verbose)
- Curl_debug(conn->data, CURLINFO_HEADER_OUT,
- sptr, (size_t)bytes_written, conn);
-
- if(bytes_written != (ssize_t)write_len) {
- write_len -= bytes_written;
- sptr += bytes_written;
- }
- else
- break;
- }
-
- return res;
-}
-
-/***********************************************************************
- *
- * ftp_quit()
- *
- * This should be called before calling sclose() on an ftp control connection
- * (not data connections). We should then wait for the response from the
- * server before returning. The calling code should then try to close the
- * connection.
- *
- */
-static CURLcode ftp_quit(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
-
- if(conn->proto.ftpc.ctl_valid) {
- result = Curl_pp_sendf(&conn->proto.ftpc.pp, "%s", "QUIT");
- if(result) {
- failf(conn->data, "Failure sending QUIT command: %s",
- curl_easy_strerror(result));
- conn->proto.ftpc.ctl_valid = FALSE; /* mark control connection as bad */
- connclose(conn, "QUIT command failed"); /* mark for connection closure */
- state(conn, FTP_STOP);
- return result;
- }
-
- state(conn, FTP_QUIT);
-
- result = ftp_block_statemach(conn);
- }
-
- return result;
-}
-
-/***********************************************************************
- *
- * ftp_disconnect()
- *
- * Disconnect from an FTP server. Cleanup protocol-specific per-connection
- * resources. BLOCKING.
- */
-static CURLcode ftp_disconnect(struct connectdata *conn, bool dead_connection)
-{
- struct ftp_conn *ftpc= &conn->proto.ftpc;
- struct pingpong *pp = &ftpc->pp;
-
- /* We cannot send quit unconditionally. If this connection is stale or
- bad in any way, sending quit and waiting around here will make the
- disconnect wait in vain and cause more problems than we need to.
-
- ftp_quit() will check the state of ftp->ctl_valid. If it's ok it
- will try to send the QUIT command, otherwise it will just return.
- */
- if(dead_connection)
- ftpc->ctl_valid = FALSE;
-
- /* The FTP session may or may not have been allocated/setup at this point! */
- (void)ftp_quit(conn); /* ignore errors on the QUIT */
-
- if(ftpc->entrypath) {
- struct SessionHandle *data = conn->data;
- if(data->state.most_recent_ftp_entrypath == ftpc->entrypath) {
- data->state.most_recent_ftp_entrypath = NULL;
- }
- free(ftpc->entrypath);
- ftpc->entrypath = NULL;
- }
-
- freedirs(ftpc);
- if(ftpc->prevpath) {
- free(ftpc->prevpath);
- ftpc->prevpath = NULL;
- }
- if(ftpc->server_os) {
- free(ftpc->server_os);
- ftpc->server_os = NULL;
- }
-
- Curl_pp_disconnect(pp);
-
-#ifdef HAVE_GSSAPI
- Curl_sec_end(conn);
-#endif
-
- return CURLE_OK;
-}
-
-/***********************************************************************
- *
- * ftp_parse_url_path()
- *
- * Parse the URL path into separate path components.
- *
- */
-static
-CURLcode ftp_parse_url_path(struct connectdata *conn)
-{
- struct SessionHandle *data = conn->data;
- /* the ftp struct is already inited in ftp_connect() */
- struct FTP *ftp = data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- const char *slash_pos; /* position of the first '/' char in curpos */
- const char *path_to_use = data->state.path;
- const char *cur_pos;
- const char *filename = NULL;
-
- cur_pos = path_to_use; /* current position in path. point at the begin
- of next path component */
-
- ftpc->ctl_valid = FALSE;
- ftpc->cwdfail = FALSE;
-
- switch(data->set.ftp_filemethod) {
- case FTPFILE_NOCWD:
- /* fastest, but less standard-compliant */
-
- /*
- The best time to check whether the path is a file or directory is right
- here. so:
-
- the first condition in the if() right here, is there just in case
- someone decides to set path to NULL one day
- */
- if(data->state.path &&
- data->state.path[0] &&
- (data->state.path[strlen(data->state.path) - 1] != '/') )
- filename = data->state.path; /* this is a full file path */
- /*
- ftpc->file is not used anywhere other than for operations on a file.
- In other words, never for directory operations.
- So we can safely leave filename as NULL here and use it as a
- argument in dir/file decisions.
- */
- break;
-
- case FTPFILE_SINGLECWD:
- /* get the last slash */
- if(!path_to_use[0]) {
- /* no dir, no file */
- ftpc->dirdepth = 0;
- break;
- }
- slash_pos=strrchr(cur_pos, '/');
- if(slash_pos || !*cur_pos) {
- size_t dirlen = slash_pos-cur_pos;
-
- ftpc->dirs = calloc(1, sizeof(ftpc->dirs[0]));
- if(!ftpc->dirs)
- return CURLE_OUT_OF_MEMORY;
-
- if(!dirlen)
- dirlen++;
-
- ftpc->dirs[0] = curl_easy_unescape(conn->data, slash_pos ? cur_pos : "/",
- slash_pos ? curlx_uztosi(dirlen) : 1,
- NULL);
- if(!ftpc->dirs[0]) {
- freedirs(ftpc);
- return CURLE_OUT_OF_MEMORY;
- }
- ftpc->dirdepth = 1; /* we consider it to be a single dir */
- filename = slash_pos ? slash_pos+1 : cur_pos; /* rest is file name */
- }
- else
- filename = cur_pos; /* this is a file name only */
- break;
-
- default: /* allow pretty much anything */
- case FTPFILE_MULTICWD:
- ftpc->dirdepth = 0;
- ftpc->diralloc = 5; /* default dir depth to allocate */
- ftpc->dirs = calloc(ftpc->diralloc, sizeof(ftpc->dirs[0]));
- if(!ftpc->dirs)
- return CURLE_OUT_OF_MEMORY;
-
- /* we have a special case for listing the root dir only */
- if(strequal(path_to_use, "/")) {
- cur_pos++; /* make it point to the zero byte */
- ftpc->dirs[0] = strdup("/");
- ftpc->dirdepth++;
- }
- else {
- /* parse the URL path into separate path components */
- while((slash_pos = strchr(cur_pos, '/')) != NULL) {
- /* 1 or 0 pointer offset to indicate absolute directory */
- ssize_t absolute_dir = ((cur_pos - data->state.path > 0) &&
- (ftpc->dirdepth == 0))?1:0;
-
- /* seek out the next path component */
- if(slash_pos-cur_pos) {
- /* we skip empty path components, like "x//y" since the FTP command
- CWD requires a parameter and a non-existent parameter a) doesn't
- work on many servers and b) has no effect on the others. */
- int len = curlx_sztosi(slash_pos - cur_pos + absolute_dir);
- ftpc->dirs[ftpc->dirdepth] =
- curl_easy_unescape(conn->data, cur_pos - absolute_dir, len, NULL);
- if(!ftpc->dirs[ftpc->dirdepth]) { /* run out of memory ... */
- failf(data, "no memory");
- freedirs(ftpc);
- return CURLE_OUT_OF_MEMORY;
- }
- if(isBadFtpString(ftpc->dirs[ftpc->dirdepth])) {
- free(ftpc->dirs[ftpc->dirdepth]);
- freedirs(ftpc);
- return CURLE_URL_MALFORMAT;
- }
- }
- else {
- cur_pos = slash_pos + 1; /* jump to the rest of the string */
- if(!ftpc->dirdepth) {
- /* path starts with a slash, add that as a directory */
- ftpc->dirs[ftpc->dirdepth] = strdup("/");
- if(!ftpc->dirs[ftpc->dirdepth++]) { /* run out of memory ... */
- failf(data, "no memory");
- freedirs(ftpc);
- return CURLE_OUT_OF_MEMORY;
- }
- }
- continue;
- }
-
- cur_pos = slash_pos + 1; /* jump to the rest of the string */
- if(++ftpc->dirdepth >= ftpc->diralloc) {
- /* enlarge array */
- char **bigger;
- ftpc->diralloc *= 2; /* double the size each time */
- bigger = realloc(ftpc->dirs, ftpc->diralloc * sizeof(ftpc->dirs[0]));
- if(!bigger) {
- freedirs(ftpc);
- return CURLE_OUT_OF_MEMORY;
- }
- ftpc->dirs = bigger;
- }
- }
- }
- filename = cur_pos; /* the rest is the file name */
- break;
- } /* switch */
-
- if(filename && *filename) {
- ftpc->file = curl_easy_unescape(conn->data, filename, 0, NULL);
- if(NULL == ftpc->file) {
- freedirs(ftpc);
- failf(data, "no memory");
- return CURLE_OUT_OF_MEMORY;
- }
- if(isBadFtpString(ftpc->file)) {
- freedirs(ftpc);
- return CURLE_URL_MALFORMAT;
- }
- }
- else
- ftpc->file=NULL; /* instead of point to a zero byte, we make it a NULL
- pointer */
-
- if(data->set.upload && !ftpc->file && (ftp->transfer == FTPTRANSFER_BODY)) {
- /* We need a file name when uploading. Return error! */
- failf(data, "Uploading to a URL without a file name!");
- return CURLE_URL_MALFORMAT;
- }
-
- ftpc->cwddone = FALSE; /* default to not done */
-
- if(ftpc->prevpath) {
- /* prevpath is "raw" so we convert the input path before we compare the
- strings */
- int dlen;
- char *path = curl_easy_unescape(conn->data, data->state.path, 0, &dlen);
- if(!path) {
- freedirs(ftpc);
- return CURLE_OUT_OF_MEMORY;
- }
-
- dlen -= ftpc->file?curlx_uztosi(strlen(ftpc->file)):0;
- if((dlen == curlx_uztosi(strlen(ftpc->prevpath))) &&
- strnequal(path, ftpc->prevpath, dlen)) {
- infof(data, "Request has same path as previous transfer\n");
- ftpc->cwddone = TRUE;
- }
- free(path);
- }
-
- return CURLE_OK;
-}
-
-/* call this when the DO phase has completed */
-static CURLcode ftp_dophase_done(struct connectdata *conn,
- bool connected)
-{
- struct FTP *ftp = conn->data->req.protop;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
-
- if(connected) {
- int completed;
- CURLcode result = ftp_do_more(conn, &completed);
-
- if(result) {
- if(conn->sock[SECONDARYSOCKET] != CURL_SOCKET_BAD) {
- /* close the second socket if it was created already */
- Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
- conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
- }
- return result;
- }
- }
-
- if(ftp->transfer != FTPTRANSFER_BODY)
- /* no data to transfer */
- Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
- else if(!connected)
- /* since we didn't connect now, we want do_more to get called */
- conn->bits.do_more = TRUE;
-
- ftpc->ctl_valid = TRUE; /* seems good */
-
- return CURLE_OK;
-}
-
-/* called from multi.c while DOing */
-static CURLcode ftp_doing(struct connectdata *conn,
- bool *dophase_done)
-{
- CURLcode result = ftp_multi_statemach(conn, dophase_done);
-
- if(result)
- DEBUGF(infof(conn->data, "DO phase failed\n"));
- else if(*dophase_done) {
- result = ftp_dophase_done(conn, FALSE /* not connected */);
-
- DEBUGF(infof(conn->data, "DO phase is complete2\n"));
- }
- return result;
-}
-
-/***********************************************************************
- *
- * ftp_regular_transfer()
- *
- * The input argument is already checked for validity.
- *
- * Performs all commands done before a regular transfer between a local and a
- * remote host.
- *
- * ftp->ctl_valid starts out as FALSE, and gets set to TRUE if we reach the
- * ftp_done() function without finding any major problem.
- */
-static
-CURLcode ftp_regular_transfer(struct connectdata *conn,
- bool *dophase_done)
-{
- CURLcode result=CURLE_OK;
- bool connected=FALSE;
- struct SessionHandle *data = conn->data;
- struct ftp_conn *ftpc = &conn->proto.ftpc;
- data->req.size = -1; /* make sure this is unknown at this point */
-
- Curl_pgrsSetUploadCounter(data, 0);
- Curl_pgrsSetDownloadCounter(data, 0);
- Curl_pgrsSetUploadSize(data, -1);
- Curl_pgrsSetDownloadSize(data, -1);
-
- ftpc->ctl_valid = TRUE; /* starts good */
-
- result = ftp_perform(conn,
- &connected, /* have we connected after PASV/PORT */
- dophase_done); /* all commands in the DO-phase done? */
-
- if(CURLE_OK == result) {
-
- if(!*dophase_done)
- /* the DO phase has not completed yet */
- return CURLE_OK;
-
- result = ftp_dophase_done(conn, connected);
-
- if(result)
- return result;
- }
- else
- freedirs(ftpc);
-
- return result;
-}
-
-static CURLcode ftp_setup_connection(struct connectdata *conn)
-{
- struct SessionHandle *data = conn->data;
- char *type;
- char command;
- struct FTP *ftp;
-
- if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
- /* Unless we have asked to tunnel ftp operations through the proxy, we
- switch and use HTTP operations only */
-#ifndef CURL_DISABLE_HTTP
- if(conn->handler == &Curl_handler_ftp)
- conn->handler = &Curl_handler_ftp_proxy;
- else {
-#ifdef USE_SSL
- conn->handler = &Curl_handler_ftps_proxy;
-#else
- failf(data, "FTPS not supported!");
- return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
- }
- /* set it up as a HTTP connection instead */
- return conn->handler->setup_connection(conn);
-#else
- failf(data, "FTP over http proxy requires HTTP support built-in!");
- return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
- }
-
- conn->data->req.protop = ftp = malloc(sizeof(struct FTP));
- if(NULL == ftp)
- return CURLE_OUT_OF_MEMORY;
-
- data->state.path++; /* don't include the initial slash */
- data->state.slash_removed = TRUE; /* we've skipped the slash */
-
- /* FTP URLs support an extension like ";type=<typecode>" that
- * we'll try to get now! */
- type = strstr(data->state.path, ";type=");
-
- if(!type)
- type = strstr(conn->host.rawalloc, ";type=");
-
- if(type) {
- *type = 0; /* it was in the middle of the hostname */
- command = Curl_raw_toupper(type[6]);
- conn->bits.type_set = TRUE;
-
- switch (command) {
- case 'A': /* ASCII mode */
- data->set.prefer_ascii = TRUE;
- break;
-
- case 'D': /* directory mode */
- data->set.ftp_list_only = TRUE;
- break;
-
- case 'I': /* binary mode */
- default:
- /* switch off ASCII */
- data->set.prefer_ascii = FALSE;
- break;
- }
- }
-
- /* get some initial data into the ftp struct */
- ftp->bytecountp = &conn->data->req.bytecount;
- ftp->transfer = FTPTRANSFER_BODY;
- ftp->downloadsize = 0;
-
- /* No need to duplicate user+password, the connectdata struct won't change
- during a session, but we re-init them here since on subsequent inits
- since the conn struct may have changed or been replaced.
- */
- ftp->user = conn->user;
- ftp->passwd = conn->passwd;
- if(isBadFtpString(ftp->user))
- return CURLE_URL_MALFORMAT;
- if(isBadFtpString(ftp->passwd))
- return CURLE_URL_MALFORMAT;
-
- conn->proto.ftpc.known_filesize = -1; /* unknown size for now */
-
- return CURLE_OK;
-}
-
-#endif /* CURL_DISABLE_FTP */