mirror of
https://github.com/darlinghq/darling-libxml2.git
synced 2024-12-05 02:46:32 +00:00
030a7a1729
* encoding.c: applied patch supplied by Christophe Dubach to fix problem with --with-minimum configuration (bug 133773) * nanoftp.c: fixed potential buffer overflow problem, similar to fix just applied to nanohttp.c.
2277 lines
53 KiB
C
2277 lines
53 KiB
C
/*
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* nanoftp.c: basic FTP client support
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*
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* Reference: RFC 959
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*/
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#ifdef TESTING
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#define STANDALONE
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#define HAVE_STDLIB_H
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#define HAVE_UNISTD_H
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#define HAVE_SYS_SOCKET_H
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#define HAVE_NETINET_IN_H
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#define HAVE_NETDB_H
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#define HAVE_SYS_TIME_H
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#else /* TESTING */
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#define NEED_SOCKETS
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#endif /* TESTING */
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#define IN_LIBXML
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#include "libxml.h"
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#ifdef LIBXML_FTP_ENABLED
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#include <string.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#include <libxml/xmlmemory.h>
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#include <libxml/parser.h>
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#include <libxml/xmlerror.h>
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#include <libxml/uri.h>
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#include <libxml/nanoftp.h>
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#include <libxml/globals.h>
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/* #define DEBUG_FTP 1 */
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#ifdef STANDALONE
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#ifndef DEBUG_FTP
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#define DEBUG_FTP 1
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#endif
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#endif
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#ifdef __MINGW32__
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#define _WINSOCKAPI_
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#include <wsockcompat.h>
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#include <winsock2.h>
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#undef SOCKLEN_T
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#define SOCKLEN_T unsigned int
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#endif
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/**
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* A couple portability macros
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*/
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#ifndef _WINSOCKAPI_
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#ifndef __BEOS__
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#define closesocket(s) close(s)
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#endif
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#define SOCKET int
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#endif
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#if defined(VMS) || defined(__VMS)
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#define SOCKLEN_T unsigned int
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#endif
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#ifdef __BEOS__
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#ifndef PF_INET
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#define PF_INET AF_INET
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#endif
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#endif
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#define FTP_COMMAND_OK 200
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#define FTP_SYNTAX_ERROR 500
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#define FTP_GET_PASSWD 331
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#define FTP_BUF_SIZE 512
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#define XML_NANO_MAX_URLBUF 4096
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typedef struct xmlNanoFTPCtxt {
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char *protocol; /* the protocol name */
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char *hostname; /* the host name */
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int port; /* the port */
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char *path; /* the path within the URL */
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char *user; /* user string */
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char *passwd; /* passwd string */
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#ifdef SUPPORT_IP6
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struct sockaddr_storage ftpAddr; /* this is large enough to hold IPv6 address*/
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#else
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struct sockaddr_in ftpAddr; /* the socket address struct */
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#endif
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int passive; /* currently we support only passive !!! */
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SOCKET controlFd; /* the file descriptor for the control socket */
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SOCKET dataFd; /* the file descriptor for the data socket */
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int state; /* WRITE / READ / CLOSED */
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int returnValue; /* the protocol return value */
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/* buffer for data received from the control connection */
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char controlBuf[FTP_BUF_SIZE + 1];
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int controlBufIndex;
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int controlBufUsed;
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int controlBufAnswer;
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} xmlNanoFTPCtxt, *xmlNanoFTPCtxtPtr;
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static int initialized = 0;
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static char *proxy = NULL; /* the proxy name if any */
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static int proxyPort = 0; /* the proxy port if any */
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static char *proxyUser = NULL; /* user for proxy authentication */
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static char *proxyPasswd = NULL;/* passwd for proxy authentication */
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static int proxyType = 0; /* uses TYPE or a@b ? */
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#ifdef SUPPORT_IP6
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static
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int have_ipv6(void) {
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int s;
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s = socket (AF_INET6, SOCK_STREAM, 0);
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if (s != -1) {
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close (s);
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return (1);
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}
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return (0);
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}
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#endif
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/**
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* xmlFTPErrMemory:
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* @extra: extra informations
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*
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* Handle an out of memory condition
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*/
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static void
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xmlFTPErrMemory(const char *extra)
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{
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__xmlSimpleError(XML_FROM_FTP, XML_ERR_NO_MEMORY, NULL, NULL, extra);
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}
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/**
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* xmlNanoFTPInit:
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*
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* Initialize the FTP protocol layer.
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* Currently it just checks for proxy informations,
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* and get the hostname
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*/
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void
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xmlNanoFTPInit(void) {
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const char *env;
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#ifdef _WINSOCKAPI_
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WSADATA wsaData;
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#endif
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if (initialized)
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return;
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#ifdef _WINSOCKAPI_
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if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0)
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return;
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#endif
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proxyPort = 21;
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env = getenv("no_proxy");
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if (env != NULL)
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return;
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env = getenv("ftp_proxy");
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if (env != NULL) {
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xmlNanoFTPScanProxy(env);
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} else {
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env = getenv("FTP_PROXY");
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if (env != NULL) {
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xmlNanoFTPScanProxy(env);
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}
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}
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env = getenv("ftp_proxy_user");
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if (env != NULL) {
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proxyUser = xmlMemStrdup(env);
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}
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env = getenv("ftp_proxy_password");
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if (env != NULL) {
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proxyPasswd = xmlMemStrdup(env);
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}
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initialized = 1;
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}
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/**
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* xmlNanoFTPCleanup:
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*
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* Cleanup the FTP protocol layer. This cleanup proxy informations.
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*/
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void
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xmlNanoFTPCleanup(void) {
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if (proxy != NULL) {
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xmlFree(proxy);
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proxy = NULL;
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}
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if (proxyUser != NULL) {
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xmlFree(proxyUser);
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proxyUser = NULL;
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}
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if (proxyPasswd != NULL) {
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xmlFree(proxyPasswd);
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proxyPasswd = NULL;
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}
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#ifdef _WINSOCKAPI_
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if (initialized)
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WSACleanup();
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#endif
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initialized = 0;
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}
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/**
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* xmlNanoFTPProxy:
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* @host: the proxy host name
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* @port: the proxy port
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* @user: the proxy user name
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* @passwd: the proxy password
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* @type: the type of proxy 1 for using SITE, 2 for USER a@b
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*
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* Setup the FTP proxy informations.
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* This can also be done by using ftp_proxy ftp_proxy_user and
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* ftp_proxy_password environment variables.
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*/
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void
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xmlNanoFTPProxy(const char *host, int port, const char *user,
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const char *passwd, int type) {
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if (proxy != NULL)
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xmlFree(proxy);
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if (proxyUser != NULL)
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xmlFree(proxyUser);
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if (proxyPasswd != NULL)
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xmlFree(proxyPasswd);
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if (host)
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proxy = xmlMemStrdup(host);
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if (user)
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proxyUser = xmlMemStrdup(user);
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if (passwd)
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proxyPasswd = xmlMemStrdup(passwd);
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proxyPort = port;
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proxyType = type;
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}
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/**
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* xmlNanoFTPScanURL:
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* @ctx: an FTP context
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* @URL: The URL used to initialize the context
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*
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* (Re)Initialize an FTP context by parsing the URL and finding
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* the protocol host port and path it indicates.
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*/
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static void
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xmlNanoFTPScanURL(void *ctx, const char *URL) {
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xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
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const char *cur = URL;
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char buf[XML_NANO_MAX_URLBUF];
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int indx = 0;
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int port = 0;
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if (ctxt->protocol != NULL) {
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xmlFree(ctxt->protocol);
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ctxt->protocol = NULL;
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}
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if (ctxt->hostname != NULL) {
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xmlFree(ctxt->hostname);
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ctxt->hostname = NULL;
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}
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if (ctxt->path != NULL) {
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xmlFree(ctxt->path);
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ctxt->path = NULL;
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}
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if (URL == NULL) return;
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buf[indx] = 0;
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while ((*cur != 0) && (indx < XML_NANO_MAX_URLBUF - 1)) {
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if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) {
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buf[indx] = 0;
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ctxt->protocol = xmlMemStrdup(buf);
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indx = 0;
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cur += 3;
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break;
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}
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buf[indx++] = *cur++;
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}
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if (*cur == 0) return;
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buf[indx] = 0;
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/* allow user@ and user:pass@ forms */
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{
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const char *p = strchr(cur, '@');
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if(p) {
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while(indx < XML_NANO_MAX_URLBUF-1) {
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if(cur[0] == ':' || cur[0] == '@') break;
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buf[indx++] = *cur++;
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}
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buf[indx] = 0;
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ctxt->user = xmlMemStrdup(buf);
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indx = 0;
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if(cur[0] == ':') {
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cur++;
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while(indx < XML_NANO_MAX_URLBUF-1) {
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if(cur[0] == '@') break;
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buf[indx++] = *cur++;
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}
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buf[indx] = 0;
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ctxt->passwd = xmlMemStrdup(buf);
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indx = 0;
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}
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cur = p+1;
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}
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}
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while (indx < XML_NANO_MAX_URLBUF - 1) {
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if ((strchr (cur, '[') && !strchr (cur, ']')) ||
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(!strchr (cur, '[') && strchr (cur, ']'))) {
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xmlGenericError (xmlGenericErrorContext, "\nxmlNanoFTPScanURL: %s",
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"Syntax Error\n");
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return;
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}
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if (cur[0] == '[') {
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cur++;
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while (cur[0] != ']')
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buf[indx++] = *cur++;
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if (!strchr (buf, ':')) {
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xmlGenericError (xmlGenericErrorContext, "\nxmlNanoFTPScanURL: %s",
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"Use [IPv6]/IPv4 format\n");
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return;
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}
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buf[indx] = 0;
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ctxt->hostname = xmlMemStrdup (buf);
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indx = 0;
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cur += 1;
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if (cur[0] == ':') {
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cur++;
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while (*cur >= '0' && *cur <= '9') {
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port *= 10;
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port += *cur - '0';
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cur++;
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}
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if (port != 0) ctxt->port = port;
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while ((cur[0] != '/') && (*cur != 0))
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cur++;
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}
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break;
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}
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else { /* address is an IPv4 one*/
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if (cur[0] == ':') {
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buf[indx] = 0;
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ctxt->hostname = xmlMemStrdup (buf);
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indx = 0;
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cur += 1;
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while ((*cur >= '0') && (*cur <= '9')) {
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port *= 10;
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port += *cur - '0';
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cur++;
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}
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if (port != 0) ctxt->port = port;
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while ((cur[0] != '/') && (*cur != 0))
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cur++;
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break;
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}
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if ((*cur == '/') || (*cur == 0)) {
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buf[indx] = 0;
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ctxt->hostname = xmlMemStrdup (buf);
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indx = 0;
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break;
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}
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}
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buf[indx++] = *cur++;
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}
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if (*cur == 0)
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ctxt->path = xmlMemStrdup("/");
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else {
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indx = 0;
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buf[indx] = 0;
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while ((*cur != 0) && (indx < XML_NANO_MAX_URLBUF-1))
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buf[indx++] = *cur++;
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buf[indx] = 0;
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ctxt->path = xmlMemStrdup(buf);
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}
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}
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/**
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* xmlNanoFTPUpdateURL:
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* @ctx: an FTP context
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* @URL: The URL used to update the context
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*
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* Update an FTP context by parsing the URL and finding
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* new path it indicates. If there is an error in the
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* protocol, hostname, port or other information, the
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* error is raised. It indicates a new connection has to
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* be established.
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*
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* Returns 0 if Ok, -1 in case of error (other host).
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*/
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int
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xmlNanoFTPUpdateURL(void *ctx, const char *URL) {
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xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
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const char *cur = URL;
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char buf[XML_NANO_MAX_URLBUF];
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int indx = 0;
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int port = 0;
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if (URL == NULL)
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return(-1);
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if (ctxt == NULL)
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return(-1);
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if (ctxt->protocol == NULL)
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return(-1);
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if (ctxt->hostname == NULL)
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return(-1);
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buf[indx] = 0;
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while ((*cur != 0) && (indx < XML_NANO_MAX_URLBUF-1)) {
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if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) {
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buf[indx] = 0;
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if (strcmp(ctxt->protocol, buf))
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return(-1);
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indx = 0;
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cur += 3;
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break;
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}
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buf[indx++] = *cur++;
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}
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if (*cur == 0)
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return(-1);
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buf[indx] = 0;
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while (indx < XML_NANO_MAX_URLBUF-1) {
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if ((strchr (cur, '[') && !strchr (cur, ']')) ||
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(!strchr (cur, '[') && strchr (cur, ']'))) {
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xmlGenericError (xmlGenericErrorContext, "\nxmlNanoFTPUpdateURL: %s",
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"Syntax Error\n");
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return (-1);
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}
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if (cur[0] == '[') {
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cur++;
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while ((cur[0] != ']') && (indx < XML_NANO_MAX_URLBUF-1))
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buf[indx++] = *cur++;
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if (!strchr (buf, ':')) {
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xmlGenericError (xmlGenericErrorContext, "\nxmlNanoFTPUpdateURL: %s",
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"Use [IPv6]/IPv4 format\n");
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return (-1);
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}
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buf[indx] = 0;
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if (strcmp (ctxt->hostname, buf))
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return (-1);
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indx = 0;
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cur += 1;
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if (cur[0] == ':') {
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cur++;
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while (*cur >= '0' && *cur <= '9') {
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port *= 10;
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port += *cur - '0';
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cur++;
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}
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if (port != ctxt->port)
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return (-1);
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while ((cur[0] != '/') && (*cur != 0))
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cur++;
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}
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break;
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}
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else {
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if (cur[0] == ':') {
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buf[indx] = 0;
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if (strcmp (ctxt->hostname, buf))
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return (-1);
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indx = 0;
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cur += 1;
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while ((*cur >= '0') && (*cur <= '9')) {
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port *= 10;
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port += *cur - '0';
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cur++;
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}
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if (port != ctxt->port)
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return (-1);
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while ((cur[0] != '/') && (*cur != 0))
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cur++;
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break;
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}
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if ((*cur == '/') || (*cur == 0)) {
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buf[indx] = 0;
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if (strcmp (ctxt->hostname, buf))
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return (-1);
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indx = 0;
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break;
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}
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}
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buf[indx++] = *cur++;
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}
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if (ctxt->path != NULL) {
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xmlFree(ctxt->path);
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ctxt->path = NULL;
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}
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if (*cur == 0)
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ctxt->path = xmlMemStrdup("/");
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else {
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indx = 0;
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buf[indx] = 0;
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while ((*cur != 0) && (indx < XML_NANO_MAX_URLBUF-1))
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buf[indx++] = *cur++;
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buf[indx] = 0;
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ctxt->path = xmlMemStrdup(buf);
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}
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return(0);
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}
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|
|
/**
|
|
* xmlNanoFTPScanProxy:
|
|
* @URL: The proxy URL used to initialize the proxy context
|
|
*
|
|
* (Re)Initialize the FTP Proxy context by parsing the URL and finding
|
|
* the protocol host port it indicates.
|
|
* Should be like ftp://myproxy/ or ftp://myproxy:3128/
|
|
* A NULL URL cleans up proxy informations.
|
|
*/
|
|
|
|
void
|
|
xmlNanoFTPScanProxy(const char *URL) {
|
|
const char *cur = URL;
|
|
char buf[XML_NANO_MAX_URLBUF];
|
|
int indx = 0;
|
|
int port = 0;
|
|
|
|
if (proxy != NULL) {
|
|
xmlFree(proxy);
|
|
proxy = NULL;
|
|
}
|
|
if (proxyPort != 0) {
|
|
proxyPort = 0;
|
|
}
|
|
#ifdef DEBUG_FTP
|
|
if (URL == NULL)
|
|
xmlGenericError(xmlGenericErrorContext, "Removing FTP proxy info\n");
|
|
else
|
|
xmlGenericError(xmlGenericErrorContext, "Using FTP proxy %s\n", URL);
|
|
#endif
|
|
if (URL == NULL) return;
|
|
buf[indx] = 0;
|
|
while ((*cur != 0) && (indx < XML_NANO_MAX_URLBUF-1)) {
|
|
if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) {
|
|
buf[indx] = 0;
|
|
indx = 0;
|
|
cur += 3;
|
|
break;
|
|
}
|
|
buf[indx++] = *cur++;
|
|
}
|
|
if (*cur == 0) return;
|
|
|
|
buf[indx] = 0;
|
|
while (indx < XML_NANO_MAX_URLBUF-1) {
|
|
if ((strchr (cur, '[') && !strchr (cur, ']')) ||
|
|
(!strchr (cur, '[') && strchr (cur, ']'))) {
|
|
xmlGenericError (xmlGenericErrorContext, "\nxmlNanoFTPScanProxy: %s",
|
|
"Syntax error\n");
|
|
return;
|
|
}
|
|
|
|
if (cur[0] == '[') {
|
|
cur++;
|
|
while (cur[0] != ']')
|
|
buf[indx++] = *cur++;
|
|
if (!strchr (buf, ':')) {
|
|
xmlGenericError (xmlGenericErrorContext, "\nxmlNanoFTPScanProxy: %s",
|
|
"Use [IPv6]/IPv4 format\n");
|
|
return;
|
|
}
|
|
|
|
buf[indx] = 0;
|
|
proxy = xmlMemStrdup (buf);
|
|
indx = 0;
|
|
cur += 1;
|
|
if (cur[0] == ':') {
|
|
cur++;
|
|
while (*cur >= '0' && *cur <= '9') {
|
|
port *= 10;
|
|
port += *cur - '0';
|
|
cur++;
|
|
}
|
|
|
|
if (port != 0) proxyPort = port;
|
|
while ((cur[0] != '/') && (*cur != 0))
|
|
cur++;
|
|
}
|
|
break;
|
|
}
|
|
else {
|
|
if (cur[0] == ':') {
|
|
buf[indx] = 0;
|
|
proxy = xmlMemStrdup (buf);
|
|
indx = 0;
|
|
cur += 1;
|
|
while ((*cur >= '0') && (*cur <= '9')) {
|
|
port *= 10;
|
|
port += *cur - '0';
|
|
cur++;
|
|
}
|
|
if (port != 0) proxyPort = port;
|
|
while ((cur[0] != '/') && (*cur != 0))
|
|
cur++;
|
|
break;
|
|
}
|
|
if ((*cur == '/') || (*cur == 0)) {
|
|
buf[indx] = 0;
|
|
proxy = xmlMemStrdup (buf);
|
|
indx = 0;
|
|
break;
|
|
}
|
|
}
|
|
buf[indx++] = *cur++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPNewCtxt:
|
|
* @URL: The URL used to initialize the context
|
|
*
|
|
* Allocate and initialize a new FTP context.
|
|
*
|
|
* Returns an FTP context or NULL in case of error.
|
|
*/
|
|
|
|
void*
|
|
xmlNanoFTPNewCtxt(const char *URL) {
|
|
xmlNanoFTPCtxtPtr ret;
|
|
char *unescaped;
|
|
|
|
ret = (xmlNanoFTPCtxtPtr) xmlMalloc(sizeof(xmlNanoFTPCtxt));
|
|
if (ret == NULL) {
|
|
xmlFTPErrMemory("allocating FTP context");
|
|
return(NULL);
|
|
}
|
|
|
|
memset(ret, 0, sizeof(xmlNanoFTPCtxt));
|
|
ret->port = 21;
|
|
ret->passive = 1;
|
|
ret->returnValue = 0;
|
|
ret->controlBufIndex = 0;
|
|
ret->controlBufUsed = 0;
|
|
ret->controlFd = -1;
|
|
|
|
unescaped = xmlURIUnescapeString(URL, 0, NULL);
|
|
if (unescaped != NULL)
|
|
xmlNanoFTPScanURL(ret, unescaped);
|
|
else if (URL != NULL)
|
|
xmlNanoFTPScanURL(ret, URL);
|
|
xmlFree(unescaped);
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPFreeCtxt:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Frees the context after closing the connection.
|
|
*/
|
|
|
|
void
|
|
xmlNanoFTPFreeCtxt(void * ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
if (ctxt == NULL) return;
|
|
if (ctxt->hostname != NULL) xmlFree(ctxt->hostname);
|
|
if (ctxt->protocol != NULL) xmlFree(ctxt->protocol);
|
|
if (ctxt->path != NULL) xmlFree(ctxt->path);
|
|
ctxt->passive = 1;
|
|
if (ctxt->controlFd >= 0) closesocket(ctxt->controlFd);
|
|
ctxt->controlFd = -1;
|
|
ctxt->controlBufIndex = -1;
|
|
ctxt->controlBufUsed = -1;
|
|
xmlFree(ctxt);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPParseResponse:
|
|
* @buf: the buffer containing the response
|
|
* @len: the buffer length
|
|
*
|
|
* Parsing of the server answer, we just extract the code.
|
|
*
|
|
* returns 0 for errors
|
|
* +XXX for last line of response
|
|
* -XXX for response to be continued
|
|
*/
|
|
static int
|
|
xmlNanoFTPParseResponse(char *buf, int len) {
|
|
int val = 0;
|
|
|
|
if (len < 3) return(-1);
|
|
if ((*buf >= '0') && (*buf <= '9'))
|
|
val = val * 10 + (*buf - '0');
|
|
else
|
|
return(0);
|
|
buf++;
|
|
if ((*buf >= '0') && (*buf <= '9'))
|
|
val = val * 10 + (*buf - '0');
|
|
else
|
|
return(0);
|
|
buf++;
|
|
if ((*buf >= '0') && (*buf <= '9'))
|
|
val = val * 10 + (*buf - '0');
|
|
else
|
|
return(0);
|
|
buf++;
|
|
if (*buf == '-')
|
|
return(-val);
|
|
return(val);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPGetMore:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Read more information from the FTP control connection
|
|
* Returns the number of bytes read, < 0 indicates an error
|
|
*/
|
|
static int
|
|
xmlNanoFTPGetMore(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
int len;
|
|
int size;
|
|
|
|
if ((ctxt->controlBufIndex < 0) || (ctxt->controlBufIndex > FTP_BUF_SIZE)) {
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlNanoFTPGetMore : controlBufIndex = %d\n",
|
|
ctxt->controlBufIndex);
|
|
#endif
|
|
return(-1);
|
|
}
|
|
|
|
if ((ctxt->controlBufUsed < 0) || (ctxt->controlBufUsed > FTP_BUF_SIZE)) {
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlNanoFTPGetMore : controlBufUsed = %d\n",
|
|
ctxt->controlBufUsed);
|
|
#endif
|
|
return(-1);
|
|
}
|
|
if (ctxt->controlBufIndex > ctxt->controlBufUsed) {
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlNanoFTPGetMore : controlBufIndex > controlBufUsed %d > %d\n",
|
|
ctxt->controlBufIndex, ctxt->controlBufUsed);
|
|
#endif
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* First pack the control buffer
|
|
*/
|
|
if (ctxt->controlBufIndex > 0) {
|
|
memmove(&ctxt->controlBuf[0], &ctxt->controlBuf[ctxt->controlBufIndex],
|
|
ctxt->controlBufUsed - ctxt->controlBufIndex);
|
|
ctxt->controlBufUsed -= ctxt->controlBufIndex;
|
|
ctxt->controlBufIndex = 0;
|
|
}
|
|
size = FTP_BUF_SIZE - ctxt->controlBufUsed;
|
|
if (size == 0) {
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlNanoFTPGetMore : buffer full %d \n", ctxt->controlBufUsed);
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Read the amount left on the control connection
|
|
*/
|
|
if ((len = recv(ctxt->controlFd, &ctxt->controlBuf[ctxt->controlBufIndex],
|
|
size, 0)) < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "recv failed");
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlNanoFTPGetMore : read %d [%d - %d]\n", len,
|
|
ctxt->controlBufUsed, ctxt->controlBufUsed + len);
|
|
#endif
|
|
ctxt->controlBufUsed += len;
|
|
ctxt->controlBuf[ctxt->controlBufUsed] = 0;
|
|
|
|
return(len);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPReadResponse:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Read the response from the FTP server after a command.
|
|
* Returns the code number
|
|
*/
|
|
static int
|
|
xmlNanoFTPReadResponse(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char *ptr, *end;
|
|
int len;
|
|
int res = -1, cur = -1;
|
|
|
|
get_more:
|
|
/*
|
|
* Assumes everything up to controlBuf[controlBufIndex] has been read
|
|
* and analyzed.
|
|
*/
|
|
len = xmlNanoFTPGetMore(ctx);
|
|
if (len < 0) {
|
|
return(-1);
|
|
}
|
|
if ((ctxt->controlBufUsed == 0) && (len == 0)) {
|
|
return(-1);
|
|
}
|
|
ptr = &ctxt->controlBuf[ctxt->controlBufIndex];
|
|
end = &ctxt->controlBuf[ctxt->controlBufUsed];
|
|
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"\n<<<\n%s\n--\n", ptr);
|
|
#endif
|
|
while (ptr < end) {
|
|
cur = xmlNanoFTPParseResponse(ptr, end - ptr);
|
|
if (cur > 0) {
|
|
/*
|
|
* Successfully scanned the control code, scratch
|
|
* till the end of the line, but keep the index to be
|
|
* able to analyze the result if needed.
|
|
*/
|
|
res = cur;
|
|
ptr += 3;
|
|
ctxt->controlBufAnswer = ptr - ctxt->controlBuf;
|
|
while ((ptr < end) && (*ptr != '\n')) ptr++;
|
|
if (*ptr == '\n') ptr++;
|
|
if (*ptr == '\r') ptr++;
|
|
break;
|
|
}
|
|
while ((ptr < end) && (*ptr != '\n')) ptr++;
|
|
if (ptr >= end) {
|
|
ctxt->controlBufIndex = ctxt->controlBufUsed;
|
|
goto get_more;
|
|
}
|
|
if (*ptr != '\r') ptr++;
|
|
}
|
|
|
|
if (res < 0) goto get_more;
|
|
ctxt->controlBufIndex = ptr - ctxt->controlBuf;
|
|
#ifdef DEBUG_FTP
|
|
ptr = &ctxt->controlBuf[ctxt->controlBufIndex];
|
|
xmlGenericError(xmlGenericErrorContext, "\n---\n%s\n--\n", ptr);
|
|
#endif
|
|
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "Got %d\n", res);
|
|
#endif
|
|
return(res / 100);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPGetResponse:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Get the response from the FTP server after a command.
|
|
* Returns the code number
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPGetResponse(void *ctx) {
|
|
int res;
|
|
|
|
res = xmlNanoFTPReadResponse(ctx);
|
|
|
|
return(res);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPCheckResponse:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Check if there is a response from the FTP server after a command.
|
|
* Returns the code number, or 0
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPCheckResponse(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
fd_set rfd;
|
|
struct timeval tv;
|
|
|
|
tv.tv_sec = 0;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(ctxt->controlFd, &rfd);
|
|
switch(select(ctxt->controlFd + 1, &rfd, NULL, NULL, &tv)) {
|
|
case 0:
|
|
return(0);
|
|
case -1:
|
|
__xmlIOErr(XML_FROM_FTP, 0, "select");
|
|
return(-1);
|
|
|
|
}
|
|
|
|
return(xmlNanoFTPReadResponse(ctx));
|
|
}
|
|
|
|
/**
|
|
* Send the user authentication
|
|
*/
|
|
|
|
static int
|
|
xmlNanoFTPSendUser(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[200];
|
|
int len;
|
|
int res;
|
|
|
|
if (ctxt->user == NULL)
|
|
snprintf(buf, sizeof(buf), "USER anonymous\r\n");
|
|
else
|
|
snprintf(buf, sizeof(buf), "USER %s\r\n", ctxt->user);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
return(res);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* Send the password authentication
|
|
*/
|
|
|
|
static int
|
|
xmlNanoFTPSendPasswd(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[200];
|
|
int len;
|
|
int res;
|
|
|
|
if (ctxt->passwd == NULL)
|
|
snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
|
|
else
|
|
snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
return(res);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPQuit:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Send a QUIT command to the server
|
|
*
|
|
* Returns -1 in case of error, 0 otherwise
|
|
*/
|
|
|
|
|
|
int
|
|
xmlNanoFTPQuit(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[200];
|
|
int len, res;
|
|
|
|
snprintf(buf, sizeof(buf), "QUIT\r\n");
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf); /* Just to be consistent, even though we know it can't have a % in it */
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
return(res);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPConnect:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Tries to open a control connection
|
|
*
|
|
* Returns -1 in case of error, 0 otherwise
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPConnect(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
struct hostent *hp;
|
|
int port;
|
|
int res;
|
|
int addrlen = sizeof (struct sockaddr_in);
|
|
|
|
if (ctxt == NULL)
|
|
return(-1);
|
|
if (ctxt->hostname == NULL)
|
|
return(-1);
|
|
|
|
/*
|
|
* do the blocking DNS query.
|
|
*/
|
|
if (proxy) {
|
|
port = proxyPort;
|
|
} else {
|
|
port = ctxt->port;
|
|
}
|
|
if (port == 0)
|
|
port = 21;
|
|
|
|
memset (&ctxt->ftpAddr, 0, sizeof(ctxt->ftpAddr));
|
|
|
|
#ifdef SUPPORT_IP6
|
|
if (have_ipv6 ()) {
|
|
struct addrinfo hints, *tmp, *result;
|
|
|
|
result = NULL;
|
|
memset (&hints, 0, sizeof(hints));
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
|
|
if (proxy) {
|
|
if (getaddrinfo (proxy, NULL, &hints, &result) != 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
|
|
return (-1);
|
|
}
|
|
}
|
|
else
|
|
if (getaddrinfo (ctxt->hostname, NULL, &hints, &result) != 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
|
|
return (-1);
|
|
}
|
|
|
|
for (tmp = result; tmp; tmp = tmp->ai_next)
|
|
if (tmp->ai_family == AF_INET || tmp->ai_family == AF_INET6)
|
|
break;
|
|
|
|
if (!tmp) {
|
|
if (result)
|
|
freeaddrinfo (result);
|
|
return (-1);
|
|
}
|
|
else {
|
|
if (tmp->ai_family == AF_INET6) {
|
|
memcpy (&ctxt->ftpAddr, tmp->ai_addr, tmp->ai_addrlen);
|
|
((struct sockaddr_in6 *) &ctxt->ftpAddr)->sin6_port = htons (port);
|
|
ctxt->controlFd = socket (AF_INET6, SOCK_STREAM, 0);
|
|
}
|
|
else {
|
|
memcpy (&ctxt->ftpAddr, tmp->ai_addr, tmp->ai_addrlen);
|
|
((struct sockaddr_in *) &ctxt->ftpAddr)->sin_port = htons (port);
|
|
ctxt->controlFd = socket (AF_INET, SOCK_STREAM, 0);
|
|
}
|
|
addrlen = tmp->ai_addrlen;
|
|
freeaddrinfo (result);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (proxy)
|
|
hp = gethostbyname (proxy);
|
|
else
|
|
hp = gethostbyname (ctxt->hostname);
|
|
if (hp == NULL) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "gethostbyname failed");
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Prepare the socket
|
|
*/
|
|
((struct sockaddr_in *)&ctxt->ftpAddr)->sin_family = AF_INET;
|
|
memcpy (&((struct sockaddr_in *)&ctxt->ftpAddr)->sin_addr,
|
|
hp->h_addr_list[0], hp->h_length);
|
|
((struct sockaddr_in *)&ctxt->ftpAddr)->sin_port = htons (port);
|
|
ctxt->controlFd = socket (AF_INET, SOCK_STREAM, 0);
|
|
addrlen = sizeof (struct sockaddr_in);
|
|
}
|
|
|
|
if (ctxt->controlFd < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "socket failed");
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* Do the connect.
|
|
*/
|
|
if (connect(ctxt->controlFd, (struct sockaddr *) &ctxt->ftpAddr,
|
|
addrlen) < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "Failed to create a connection");
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* Wait for the HELLO from the server.
|
|
*/
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if (res != 2) {
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
|
|
/*
|
|
* State diagram for the login operation on the FTP server
|
|
*
|
|
* Reference: RFC 959
|
|
*
|
|
* 1
|
|
* +---+ USER +---+------------->+---+
|
|
* | B |---------->| W | 2 ---->| E |
|
|
* +---+ +---+------ | -->+---+
|
|
* | | | | |
|
|
* 3 | | 4,5 | | |
|
|
* -------------- ----- | | |
|
|
* | | | | |
|
|
* | | | | |
|
|
* | --------- |
|
|
* | 1| | | |
|
|
* V | | | |
|
|
* +---+ PASS +---+ 2 | ------>+---+
|
|
* | |---------->| W |------------->| S |
|
|
* +---+ +---+ ---------->+---+
|
|
* | | | | |
|
|
* 3 | |4,5| | |
|
|
* -------------- -------- |
|
|
* | | | | |
|
|
* | | | | |
|
|
* | -----------
|
|
* | 1,3| | | |
|
|
* V | 2| | |
|
|
* +---+ ACCT +---+-- | ----->+---+
|
|
* | |---------->| W | 4,5 -------->| F |
|
|
* +---+ +---+------------->+---+
|
|
*
|
|
* Of course in case of using a proxy this get really nasty and is not
|
|
* standardized at all :-(
|
|
*/
|
|
if (proxy) {
|
|
int len;
|
|
char buf[400];
|
|
|
|
if (proxyUser != NULL) {
|
|
/*
|
|
* We need proxy auth
|
|
*/
|
|
snprintf(buf, sizeof(buf), "USER %s\r\n", proxyUser);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->controlFd);
|
|
ctxt->controlFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
switch (res) {
|
|
case 2:
|
|
if (proxyPasswd == NULL)
|
|
break;
|
|
case 3:
|
|
if (proxyPasswd != NULL)
|
|
snprintf(buf, sizeof(buf), "PASS %s\r\n", proxyPasswd);
|
|
else
|
|
snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->controlFd);
|
|
ctxt->controlFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if (res > 3) {
|
|
closesocket(ctxt->controlFd);
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
break;
|
|
case 1:
|
|
break;
|
|
case 4:
|
|
case 5:
|
|
case -1:
|
|
default:
|
|
closesocket(ctxt->controlFd);
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We assume we don't need more authentication to the proxy
|
|
* and that it succeeded :-\
|
|
*/
|
|
switch (proxyType) {
|
|
case 0:
|
|
/* we will try in sequence */
|
|
case 1:
|
|
/* Using SITE command */
|
|
snprintf(buf, sizeof(buf), "SITE %s\r\n", ctxt->hostname);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if (res == 2) {
|
|
/* we assume it worked :-\ 1 is error for SITE command */
|
|
proxyType = 1;
|
|
break;
|
|
}
|
|
if (proxyType == 1) {
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
case 2:
|
|
/* USER user@host command */
|
|
if (ctxt->user == NULL)
|
|
snprintf(buf, sizeof(buf), "USER anonymous@%s\r\n",
|
|
ctxt->hostname);
|
|
else
|
|
snprintf(buf, sizeof(buf), "USER %s@%s\r\n",
|
|
ctxt->user, ctxt->hostname);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if ((res == 1) || (res == 2)) {
|
|
/* we assume it worked :-\ */
|
|
proxyType = 2;
|
|
return(0);
|
|
}
|
|
if (ctxt->passwd == NULL)
|
|
snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
|
|
else
|
|
snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if ((res == 1) || (res == 2)) {
|
|
/* we assume it worked :-\ */
|
|
proxyType = 2;
|
|
return(0);
|
|
}
|
|
if (proxyType == 2) {
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
case 3:
|
|
/*
|
|
* If you need support for other Proxy authentication scheme
|
|
* send the code or at least the sequence in use.
|
|
*/
|
|
default:
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
}
|
|
/*
|
|
* Non-proxy handling.
|
|
*/
|
|
res = xmlNanoFTPSendUser(ctxt);
|
|
if (res < 0) {
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
switch (res) {
|
|
case 2:
|
|
return(0);
|
|
case 3:
|
|
break;
|
|
case 1:
|
|
case 4:
|
|
case 5:
|
|
case -1:
|
|
default:
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
res = xmlNanoFTPSendPasswd(ctxt);
|
|
if (res < 0) {
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
switch (res) {
|
|
case 2:
|
|
break;
|
|
case 3:
|
|
__xmlIOErr(XML_FROM_FTP, XML_FTP_ACCNT,
|
|
"FTP server asking for ACCNT on anonymous\n");
|
|
case 1:
|
|
case 4:
|
|
case 5:
|
|
case -1:
|
|
default:
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPConnectTo:
|
|
* @server: an FTP server name
|
|
* @port: the port (use 21 if 0)
|
|
*
|
|
* Tries to open a control connection to the given server/port
|
|
*
|
|
* Returns an fTP context or NULL if it failed
|
|
*/
|
|
|
|
void*
|
|
xmlNanoFTPConnectTo(const char *server, int port) {
|
|
xmlNanoFTPCtxtPtr ctxt;
|
|
int res;
|
|
|
|
xmlNanoFTPInit();
|
|
if (server == NULL)
|
|
return(NULL);
|
|
ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(NULL);
|
|
ctxt->hostname = xmlMemStrdup(server);
|
|
if (port != 0)
|
|
ctxt->port = port;
|
|
res = xmlNanoFTPConnect(ctxt);
|
|
if (res < 0) {
|
|
xmlNanoFTPFreeCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
return(ctxt);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPCwd:
|
|
* @ctx: an FTP context
|
|
* @directory: a directory on the server
|
|
*
|
|
* Tries to change the remote directory
|
|
*
|
|
* Returns -1 incase of error, 1 if CWD worked, 0 if it failed
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPCwd(void *ctx, char *directory) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[400];
|
|
int len;
|
|
int res;
|
|
|
|
/*
|
|
* Expected response code for CWD:
|
|
*
|
|
* CWD
|
|
* 250
|
|
* 500, 501, 502, 421, 530, 550
|
|
*/
|
|
snprintf(buf, sizeof(buf), "CWD %s\r\n", directory);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if (res == 4) {
|
|
return(-1);
|
|
}
|
|
if (res == 2) return(1);
|
|
if (res == 5) {
|
|
return(0);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPDele:
|
|
* @ctx: an FTP context
|
|
* @file: a file or directory on the server
|
|
*
|
|
* Tries to delete an item (file or directory) from server
|
|
*
|
|
* Returns -1 incase of error, 1 if DELE worked, 0 if it failed
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPDele(void *ctx, char *file) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[400];
|
|
int len;
|
|
int res;
|
|
|
|
/*
|
|
* Expected response code for DELE:
|
|
*
|
|
* DELE
|
|
* 250
|
|
* 450, 550
|
|
* 500, 501, 502, 421, 530
|
|
*/
|
|
|
|
snprintf(buf, sizeof(buf), "DELE %s\r\n", file);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if (res == 4) {
|
|
return(-1);
|
|
}
|
|
if (res == 2) return(1);
|
|
if (res == 5) {
|
|
return(0);
|
|
}
|
|
return(0);
|
|
}
|
|
/**
|
|
* xmlNanoFTPGetConnection:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Try to open a data connection to the server. Currently only
|
|
* passive mode is supported.
|
|
*
|
|
* Returns -1 incase of error, 0 otherwise
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPGetConnection(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[200], *cur;
|
|
int len, i;
|
|
int res;
|
|
unsigned char ad[6], *adp, *portp;
|
|
unsigned int temp[6];
|
|
#ifdef SUPPORT_IP6
|
|
struct sockaddr_storage dataAddr;
|
|
#else
|
|
struct sockaddr_in dataAddr;
|
|
#endif
|
|
SOCKLEN_T dataAddrLen;
|
|
|
|
memset (&dataAddr, 0, sizeof(dataAddr));
|
|
#ifdef SUPPORT_IP6
|
|
if ((ctxt->ftpAddr).ss_family == AF_INET6) {
|
|
ctxt->dataFd = socket (AF_INET6, SOCK_STREAM, IPPROTO_TCP);
|
|
((struct sockaddr_in6 *)&dataAddr)->sin6_family = AF_INET6;
|
|
dataAddrLen = sizeof(struct sockaddr_in6);
|
|
} else
|
|
#endif
|
|
{
|
|
ctxt->dataFd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
|
((struct sockaddr_in *)&dataAddr)->sin_family = AF_INET;
|
|
dataAddrLen = sizeof (struct sockaddr_in);
|
|
}
|
|
|
|
if (ctxt->dataFd < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "socket failed");
|
|
return (-1);
|
|
}
|
|
|
|
if (ctxt->passive) {
|
|
#ifdef SUPPORT_IP6
|
|
if ((ctxt->ftpAddr).ss_family == AF_INET6)
|
|
snprintf (buf, sizeof(buf), "EPSV\r\n");
|
|
else
|
|
#endif
|
|
snprintf (buf, sizeof(buf), "PASV\r\n");
|
|
len = strlen (buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPReadResponse(ctx);
|
|
if (res != 2) {
|
|
if (res == 5) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-1);
|
|
} else {
|
|
/*
|
|
* retry with an active connection
|
|
*/
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
ctxt->passive = 0;
|
|
}
|
|
}
|
|
cur = &ctxt->controlBuf[ctxt->controlBufAnswer];
|
|
while (((*cur < '0') || (*cur > '9')) && *cur != '\0') cur++;
|
|
#ifdef SUPPORT_IP6
|
|
if ((ctxt->ftpAddr).ss_family == AF_INET6) {
|
|
if (sscanf (cur, "%u", &temp[0]) != 1) {
|
|
__xmlIOErr(XML_FROM_FTP, XML_FTP_EPSV_ANSWER,
|
|
"Invalid answer to EPSV\n");
|
|
if (ctxt->dataFd != -1) {
|
|
closesocket (ctxt->dataFd); ctxt->dataFd = -1;
|
|
}
|
|
return (-1);
|
|
}
|
|
memcpy (&((struct sockaddr_in6 *)&dataAddr)->sin6_addr, &((struct sockaddr_in6 *)&ctxt->ftpAddr)->sin6_addr, sizeof(struct in6_addr));
|
|
((struct sockaddr_in6 *)&dataAddr)->sin6_port = htons (temp[0]);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (sscanf (cur, "%u,%u,%u,%u,%u,%u", &temp[0], &temp[1], &temp[2],
|
|
&temp[3], &temp[4], &temp[5]) != 6) {
|
|
__xmlIOErr(XML_FROM_FTP, XML_FTP_PASV_ANSWER,
|
|
"Invalid answer to PASV\n");
|
|
if (ctxt->dataFd != -1) {
|
|
closesocket (ctxt->dataFd); ctxt->dataFd = -1;
|
|
}
|
|
return (-1);
|
|
}
|
|
for (i=0; i<6; i++) ad[i] = (unsigned char) (temp[i] & 0xff);
|
|
memcpy (&((struct sockaddr_in *)&dataAddr)->sin_addr, &ad[0], 4);
|
|
memcpy (&((struct sockaddr_in *)&dataAddr)->sin_port, &ad[4], 2);
|
|
}
|
|
|
|
if (connect(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "Failed to create a data connection");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return (-1);
|
|
}
|
|
} else {
|
|
getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen);
|
|
#ifdef SUPPORT_IP6
|
|
if ((ctxt->ftpAddr).ss_family == AF_INET6)
|
|
((struct sockaddr_in6 *)&dataAddr)->sin6_port = 0;
|
|
else
|
|
#endif
|
|
((struct sockaddr_in *)&dataAddr)->sin_port = 0;
|
|
|
|
if (bind(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "bind failed");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return (-1);
|
|
}
|
|
getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen);
|
|
|
|
if (listen(ctxt->dataFd, 1) < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "listen failed");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return (-1);
|
|
}
|
|
#ifdef SUPPORT_IP6
|
|
if ((ctxt->ftpAddr).ss_family == AF_INET6) {
|
|
char buf6[INET6_ADDRSTRLEN];
|
|
inet_ntop (AF_INET6, &((struct sockaddr_in6 *)&dataAddr)->sin6_addr,
|
|
buf6, INET6_ADDRSTRLEN);
|
|
adp = (unsigned char *) buf6;
|
|
portp = (unsigned char *) &((struct sockaddr_in6 *)&dataAddr)->sin6_port;
|
|
snprintf (buf, sizeof(buf), "EPRT |2|%s|%s|\r\n", adp, portp);
|
|
} else
|
|
#endif
|
|
{
|
|
adp = (unsigned char *) &((struct sockaddr_in *)&dataAddr)->sin_addr;
|
|
portp = (unsigned char *) &((struct sockaddr_in *)&dataAddr)->sin_port;
|
|
snprintf (buf, sizeof(buf), "PORT %d,%d,%d,%d,%d,%d\r\n",
|
|
adp[0] & 0xff, adp[1] & 0xff, adp[2] & 0xff, adp[3] & 0xff,
|
|
portp[0] & 0xff, portp[1] & 0xff);
|
|
}
|
|
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if (res != 2) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-1);
|
|
}
|
|
}
|
|
return(ctxt->dataFd);
|
|
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPCloseConnection:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Close the data connection from the server
|
|
*
|
|
* Returns -1 incase of error, 0 otherwise
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPCloseConnection(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
int res;
|
|
fd_set rfd, efd;
|
|
struct timeval tv;
|
|
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
tv.tv_sec = 15;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(ctxt->controlFd, &rfd);
|
|
FD_ZERO(&efd);
|
|
FD_SET(ctxt->controlFd, &efd);
|
|
res = select(ctxt->controlFd + 1, &rfd, NULL, &efd, &tv);
|
|
if (res < 0) {
|
|
#ifdef DEBUG_FTP
|
|
perror("select");
|
|
#endif
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
if (res == 0) {
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlNanoFTPCloseConnection: timeout\n");
|
|
#endif
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
} else {
|
|
res = xmlNanoFTPGetResponse(ctxt);
|
|
if (res != 2) {
|
|
closesocket(ctxt->controlFd); ctxt->controlFd = -1;
|
|
return(-1);
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPParseList:
|
|
* @list: some data listing received from the server
|
|
* @callback: the user callback
|
|
* @userData: the user callback data
|
|
*
|
|
* Parse at most one entry from the listing.
|
|
*
|
|
* Returns -1 incase of error, the length of data parsed otherwise
|
|
*/
|
|
|
|
static int
|
|
xmlNanoFTPParseList(const char *list, ftpListCallback callback, void *userData) {
|
|
const char *cur = list;
|
|
char filename[151];
|
|
char attrib[11];
|
|
char owner[11];
|
|
char group[11];
|
|
char month[4];
|
|
int year = 0;
|
|
int minute = 0;
|
|
int hour = 0;
|
|
int day = 0;
|
|
unsigned long size = 0;
|
|
int links = 0;
|
|
int i;
|
|
|
|
if (!strncmp(cur, "total", 5)) {
|
|
cur += 5;
|
|
while (*cur == ' ') cur++;
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
links = (links * 10) + (*cur++ - '0');
|
|
while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r'))
|
|
cur++;
|
|
return(cur - list);
|
|
} else if (*list == '+') {
|
|
return(0);
|
|
} else {
|
|
while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r'))
|
|
cur++;
|
|
if (*cur == 0) return(0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 10)
|
|
attrib[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0) return(0);
|
|
}
|
|
attrib[10] = 0;
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
links = (links * 10) + (*cur++ - '0');
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 10)
|
|
owner[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0) return(0);
|
|
}
|
|
owner[i] = 0;
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 10)
|
|
group[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0) return(0);
|
|
}
|
|
group[i] = 0;
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
size = (size * 10) + (*cur++ - '0');
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 3)
|
|
month[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0) return(0);
|
|
}
|
|
month[i] = 0;
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
day = (day * 10) + (*cur++ - '0');
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
if ((cur[1] == 0) || (cur[2] == 0)) return(0);
|
|
if ((cur[1] == ':') || (cur[2] == ':')) {
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
hour = (hour * 10) + (*cur++ - '0');
|
|
if (*cur == ':') cur++;
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
minute = (minute * 10) + (*cur++ - '0');
|
|
} else {
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
year = (year * 10) + (*cur++ - '0');
|
|
}
|
|
while (*cur == ' ') cur++;
|
|
if (*cur == 0) return(0);
|
|
i = 0;
|
|
while ((*cur != '\n') && (*cur != '\r')) {
|
|
if (i < 150)
|
|
filename[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0) return(0);
|
|
}
|
|
filename[i] = 0;
|
|
if ((*cur != '\n') && (*cur != '\r'))
|
|
return(0);
|
|
while ((*cur == '\n') || (*cur == '\r'))
|
|
cur++;
|
|
}
|
|
if (callback != NULL) {
|
|
callback(userData, filename, attrib, owner, group, size, links,
|
|
year, month, day, hour, minute);
|
|
}
|
|
return(cur - list);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPList:
|
|
* @ctx: an FTP context
|
|
* @callback: the user callback
|
|
* @userData: the user callback data
|
|
* @filename: optional files to list
|
|
*
|
|
* Do a listing on the server. All files info are passed back
|
|
* in the callbacks.
|
|
*
|
|
* Returns -1 incase of error, 0 otherwise
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPList(void *ctx, ftpListCallback callback, void *userData,
|
|
char *filename) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[4096 + 1];
|
|
int len, res;
|
|
int indx = 0, base;
|
|
fd_set rfd, efd;
|
|
struct timeval tv;
|
|
|
|
if (filename == NULL) {
|
|
if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1)
|
|
return(-1);
|
|
ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
|
|
if (ctxt->dataFd == -1)
|
|
return(-1);
|
|
snprintf(buf, sizeof(buf), "LIST -L\r\n");
|
|
} else {
|
|
if (filename[0] != '/') {
|
|
if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1)
|
|
return(-1);
|
|
}
|
|
ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
|
|
if (ctxt->dataFd == -1)
|
|
return(-1);
|
|
snprintf(buf, sizeof(buf), "LIST -L %s\r\n", filename);
|
|
}
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPReadResponse(ctxt);
|
|
if (res != 1) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-res);
|
|
}
|
|
|
|
do {
|
|
tv.tv_sec = 1;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(ctxt->dataFd, &rfd);
|
|
FD_ZERO(&efd);
|
|
FD_SET(ctxt->dataFd, &efd);
|
|
res = select(ctxt->dataFd + 1, &rfd, NULL, &efd, &tv);
|
|
if (res < 0) {
|
|
#ifdef DEBUG_FTP
|
|
perror("select");
|
|
#endif
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-1);
|
|
}
|
|
if (res == 0) {
|
|
res = xmlNanoFTPCheckResponse(ctxt);
|
|
if (res < 0) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
ctxt->dataFd = -1;
|
|
return(-1);
|
|
}
|
|
if (res == 2) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(0);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
if ((len = recv(ctxt->dataFd, &buf[indx], sizeof(buf) - (indx + 1), 0)) < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "recv");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
ctxt->dataFd = -1;
|
|
return(-1);
|
|
}
|
|
#ifdef DEBUG_FTP
|
|
write(1, &buf[indx], len);
|
|
#endif
|
|
indx += len;
|
|
buf[indx] = 0;
|
|
base = 0;
|
|
do {
|
|
res = xmlNanoFTPParseList(&buf[base], callback, userData);
|
|
base += res;
|
|
} while (res > 0);
|
|
|
|
memmove(&buf[0], &buf[base], indx - base);
|
|
indx -= base;
|
|
} while (len != 0);
|
|
xmlNanoFTPCloseConnection(ctxt);
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPGetSocket:
|
|
* @ctx: an FTP context
|
|
* @filename: the file to retrieve (or NULL if path is in context).
|
|
*
|
|
* Initiate fetch of the given file from the server.
|
|
*
|
|
* Returns the socket for the data connection, or <0 in case of error
|
|
*/
|
|
|
|
|
|
int
|
|
xmlNanoFTPGetSocket(void *ctx, const char *filename) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[300];
|
|
int res, len;
|
|
if ((filename == NULL) && (ctxt->path == NULL))
|
|
return(-1);
|
|
ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
|
|
if (ctxt->dataFd == -1)
|
|
return(-1);
|
|
|
|
snprintf(buf, sizeof(buf), "TYPE I\r\n");
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPReadResponse(ctxt);
|
|
if (res != 2) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-res);
|
|
}
|
|
if (filename == NULL)
|
|
snprintf(buf, sizeof(buf), "RETR %s\r\n", ctxt->path);
|
|
else
|
|
snprintf(buf, sizeof(buf), "RETR %s\r\n", filename);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
len = strlen(buf);
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "%s", buf);
|
|
#endif
|
|
res = send(ctxt->controlFd, buf, len, 0);
|
|
if (res < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "send failed");
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(res);
|
|
}
|
|
res = xmlNanoFTPReadResponse(ctxt);
|
|
if (res != 1) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-res);
|
|
}
|
|
return(ctxt->dataFd);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPGet:
|
|
* @ctx: an FTP context
|
|
* @callback: the user callback
|
|
* @userData: the user callback data
|
|
* @filename: the file to retrieve
|
|
*
|
|
* Fetch the given file from the server. All data are passed back
|
|
* in the callbacks. The last callback has a size of 0 block.
|
|
*
|
|
* Returns -1 incase of error, 0 otherwise
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPGet(void *ctx, ftpDataCallback callback, void *userData,
|
|
const char *filename) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
char buf[4096];
|
|
int len = 0, res;
|
|
fd_set rfd;
|
|
struct timeval tv;
|
|
|
|
if ((filename == NULL) && (ctxt->path == NULL))
|
|
return(-1);
|
|
if (callback == NULL)
|
|
return(-1);
|
|
if (xmlNanoFTPGetSocket(ctxt, filename) < 0)
|
|
return(-1);
|
|
|
|
do {
|
|
tv.tv_sec = 1;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(ctxt->dataFd, &rfd);
|
|
res = select(ctxt->dataFd + 1, &rfd, NULL, NULL, &tv);
|
|
if (res < 0) {
|
|
#ifdef DEBUG_FTP
|
|
perror("select");
|
|
#endif
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-1);
|
|
}
|
|
if (res == 0) {
|
|
res = xmlNanoFTPCheckResponse(ctxt);
|
|
if (res < 0) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
ctxt->dataFd = -1;
|
|
return(-1);
|
|
}
|
|
if (res == 2) {
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(0);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
if ((len = recv(ctxt->dataFd, buf, sizeof(buf), 0)) < 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "recv failed");
|
|
callback(userData, buf, len);
|
|
closesocket(ctxt->dataFd); ctxt->dataFd = -1;
|
|
return(-1);
|
|
}
|
|
callback(userData, buf, len);
|
|
} while (len != 0);
|
|
|
|
return(xmlNanoFTPCloseConnection(ctxt));
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPRead:
|
|
* @ctx: the FTP context
|
|
* @dest: a buffer
|
|
* @len: the buffer length
|
|
*
|
|
* This function tries to read @len bytes from the existing FTP connection
|
|
* and saves them in @dest. This is a blocking call.
|
|
*
|
|
* Returns the number of byte read. 0 is an indication of an end of connection.
|
|
* -1 indicates a parameter error.
|
|
*/
|
|
int
|
|
xmlNanoFTPRead(void *ctx, void *dest, int len) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
|
|
if (ctx == NULL) return(-1);
|
|
if (ctxt->dataFd < 0) return(0);
|
|
if (dest == NULL) return(-1);
|
|
if (len <= 0) return(0);
|
|
|
|
len = recv(ctxt->dataFd, dest, len, 0);
|
|
if (len <= 0) {
|
|
__xmlIOErr(XML_FROM_FTP, 0, "recv failed");
|
|
xmlNanoFTPCloseConnection(ctxt);
|
|
}
|
|
#ifdef DEBUG_FTP
|
|
xmlGenericError(xmlGenericErrorContext, "Recvd %d bytes\n", len);
|
|
#endif
|
|
return(len);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPOpen:
|
|
* @URL: the URL to the resource
|
|
*
|
|
* Start to fetch the given ftp:// resource
|
|
*
|
|
* Returns an FTP context, or NULL
|
|
*/
|
|
|
|
void*
|
|
xmlNanoFTPOpen(const char *URL) {
|
|
xmlNanoFTPCtxtPtr ctxt;
|
|
int sock;
|
|
|
|
xmlNanoFTPInit();
|
|
if (URL == NULL) return(NULL);
|
|
if (strncmp("ftp://", URL, 6)) return(NULL);
|
|
|
|
ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(URL);
|
|
if (ctxt == NULL) return(NULL);
|
|
if (xmlNanoFTPConnect(ctxt) < 0) {
|
|
xmlNanoFTPFreeCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
sock = xmlNanoFTPGetSocket(ctxt, ctxt->path);
|
|
if (sock < 0) {
|
|
xmlNanoFTPFreeCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
return(ctxt);
|
|
}
|
|
|
|
/**
|
|
* xmlNanoFTPClose:
|
|
* @ctx: an FTP context
|
|
*
|
|
* Close the connection and both control and transport
|
|
*
|
|
* Returns -1 incase of error, 0 otherwise
|
|
*/
|
|
|
|
int
|
|
xmlNanoFTPClose(void *ctx) {
|
|
xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
|
|
|
|
if (ctxt == NULL)
|
|
return(-1);
|
|
|
|
if (ctxt->dataFd >= 0) {
|
|
closesocket(ctxt->dataFd);
|
|
ctxt->dataFd = -1;
|
|
}
|
|
if (ctxt->controlFd >= 0) {
|
|
xmlNanoFTPQuit(ctxt);
|
|
closesocket(ctxt->controlFd);
|
|
ctxt->controlFd = -1;
|
|
}
|
|
xmlNanoFTPFreeCtxt(ctxt);
|
|
return(0);
|
|
}
|
|
|
|
#ifdef STANDALONE
|
|
/************************************************************************
|
|
* *
|
|
* Basic test in Standalone mode *
|
|
* *
|
|
************************************************************************/
|
|
static
|
|
void ftpList(void *userData, const char *filename, const char* attrib,
|
|
const char *owner, const char *group, unsigned long size, int links,
|
|
int year, const char *month, int day, int hour, int minute) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"%s %s %s %ld %s\n", attrib, owner, group, size, filename);
|
|
}
|
|
static
|
|
void ftpData(void *userData, const char *data, int len) {
|
|
if (userData == NULL) return;
|
|
if (len <= 0) {
|
|
fclose((FILE*)userData);
|
|
return;
|
|
}
|
|
fwrite(data, len, 1, (FILE*)userData);
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
void *ctxt;
|
|
FILE *output;
|
|
char *tstfile = NULL;
|
|
|
|
xmlNanoFTPInit();
|
|
if (argc > 1) {
|
|
ctxt = xmlNanoFTPNewCtxt(argv[1]);
|
|
if (xmlNanoFTPConnect(ctxt) < 0) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"Couldn't connect to %s\n", argv[1]);
|
|
exit(1);
|
|
}
|
|
if (argc > 2)
|
|
tstfile = argv[2];
|
|
} else
|
|
ctxt = xmlNanoFTPConnectTo("localhost", 0);
|
|
if (ctxt == NULL) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"Couldn't connect to localhost\n");
|
|
exit(1);
|
|
}
|
|
xmlNanoFTPList(ctxt, ftpList, NULL, tstfile);
|
|
output = fopen("/tmp/tstdata", "w");
|
|
if (output != NULL) {
|
|
if (xmlNanoFTPGet(ctxt, ftpData, (void *) output, tstfile) < 0)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"Failed to get file\n");
|
|
|
|
}
|
|
xmlNanoFTPClose(ctxt);
|
|
xmlMemoryDump();
|
|
exit(0);
|
|
}
|
|
#endif /* STANDALONE */
|
|
#else /* !LIBXML_FTP_ENABLED */
|
|
#ifdef STANDALONE
|
|
#include <stdio.h>
|
|
int main(int argc, char **argv) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"%s : FTP support not compiled in\n", argv[0]);
|
|
return(0);
|
|
}
|
|
#endif /* STANDALONE */
|
|
#endif /* LIBXML_FTP_ENABLED */
|