/
protocols.c
1824 lines (1466 loc) · 46.1 KB
/
protocols.c
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/*****************************************************************************/
/* protocols.c - Skeleton functions for the protocols gftp supports */
/* Copyright (C) 1998-2007 Brian Masney <masneyb@gftp.org> */
/* */
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation; either version 2 of the License, or */
/* (at your option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111 USA */
/*****************************************************************************/
#include "gftp.h"
static const char cvsid[] = "$Id$";
gftp_request *
gftp_request_new (void)
{
gftp_request *request;
request = g_malloc0 (sizeof (*request));
request->datafd = -1;
request->cachefd = -1;
request->server_type = GFTP_DIRTYPE_OTHER;
request->homedir=NULL;
return (request);
}
void
gftp_request_destroy (gftp_request * request, int free_request)
{
g_return_if_fail (request != NULL);
gftp_disconnect (request);
if (request->destroy != NULL)
request->destroy (request);
if (request->hostname)
g_free (request->hostname);
if (request->username)
g_free (request->username);
if (request->password)
g_free (request->password);
if (request->account)
g_free (request->account);
if (request->directory)
g_free (request->directory);
if (request->last_ftp_response)
g_free (request->last_ftp_response);
if (request->protocol_data)
g_free (request->protocol_data);
if (request->homedir)
g_free (request->homedir);
#if defined (HAVE_GETADDRINFO) && defined (HAVE_GAI_STRERROR)
if (request->remote_addr != NULL)
g_free (request->remote_addr);
#endif
if (request->local_options_vars != NULL)
{
gftp_config_free_options (request->local_options_vars,
request->local_options_hash,
request->num_local_options_vars);
}
memset (request, 0, sizeof (*request));
if (free_request)
g_free (request);
else
{
request->datafd = -1;
request->cachefd = -1;
request->server_type = GFTP_DIRTYPE_OTHER;
}
}
/* This function is called to copy protocol specific data from one request
structure to another. This is typically called when a file transfer is
completed, state information can be copied back to the main window */
void
gftp_copy_param_options (gftp_request * dest_request,
gftp_request * src_request)
{
g_return_if_fail (dest_request != NULL);
g_return_if_fail (src_request != NULL);
g_return_if_fail (dest_request->protonum == src_request->protonum);
if (dest_request->copy_param_options)
dest_request->copy_param_options (dest_request, src_request);
}
void
gftp_file_destroy (gftp_file * file, int free_it)
{
g_return_if_fail (file != NULL);
if (file->file)
g_free (file->file);
if (file->user)
g_free (file->user);
if (file->group)
g_free (file->group);
if (file->destfile)
g_free (file->destfile);
if (free_it && file)
g_free (file);
else
memset (file, 0, sizeof (*file));
}
int
gftp_connect (gftp_request * request)
{
int ret;
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->connect == NULL)
return (GFTP_EFATAL);
if ((ret = gftp_set_config_options (request)) < 0)
return (ret);
ret=request->connect (request);
if(ret==0 && request->directory && request->directory[0] && request->homedir == NULL)
request->homedir=g_strdup(request->directory);
return ret;
}
void
gftp_disconnect (gftp_request * request)
{
g_return_if_fail (request != NULL);
#ifdef USE_SSL
if (request->ssl != NULL)
{
SSL_free (request->ssl);
request->ssl = NULL;
}
#endif
#if GLIB_MAJOR_VERSION > 1
if (request->iconv_from_initialized)
{
g_iconv_close (request->iconv_from);
request->iconv_from_initialized = 0;
}
if (request->iconv_to_initialized)
{
g_iconv_close (request->iconv_to);
request->iconv_to_initialized = 0;
}
if (request->iconv_charset)
{
g_free (request->iconv_charset);
request->iconv_charset = NULL;
}
#endif
if(request->homedir)
g_free (request->homedir);
request->homedir=NULL;
request->cached = 0;
if (request->disconnect == NULL)
return;
request->disconnect (request);
}
off_t
gftp_get_file (gftp_request * request, const char *filename,
off_t startsize)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
request->cached = 0;
if (request->get_file == NULL)
return (GFTP_EFATAL);
return (request->get_file (request, filename, startsize));
}
int
gftp_put_file (gftp_request * request, const char *filename,
off_t startsize, off_t totalsize)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
request->cached = 0;
if (request->put_file == NULL)
return (GFTP_EFATAL);
return (request->put_file (request, filename, startsize, totalsize));
}
off_t
gftp_transfer_file (gftp_request * fromreq, const char *fromfile,
off_t fromsize, gftp_request * toreq, const char *tofile,
off_t tosize)
{
/* Needed for systems that size(float) < size(void *) */
union { intptr_t i; float f; } maxkbs;
off_t size;
int ret;
g_return_val_if_fail (fromreq != NULL, GFTP_EFATAL);
g_return_val_if_fail (fromfile != NULL, GFTP_EFATAL);
g_return_val_if_fail (toreq != NULL, GFTP_EFATAL);
g_return_val_if_fail (tofile != NULL, GFTP_EFATAL);
gftp_lookup_request_option (toreq, "maxkbs", &maxkbs.f);
if (maxkbs.f > 0)
{
toreq->logging_function (gftp_logging_misc, toreq,
_("File transfer will be throttled to %.2f KB/s\n"),
maxkbs.f);
}
if (fromreq->protonum == toreq->protonum &&
fromreq->transfer_file != NULL)
return (fromreq->transfer_file (fromreq, fromfile, fromsize, toreq,
tofile, tosize));
fromreq->cached = 0;
toreq->cached = 0;
get_file:
size = gftp_get_file (fromreq, fromfile, tosize);
if (size < 0)
{
if (size == GFTP_ETIMEDOUT)
{
ret = gftp_connect (fromreq);
if (ret < 0)
return (ret);
goto get_file;
}
return (size);
}
put_file:
ret = gftp_put_file (toreq, tofile, tosize, size);
if (ret != 0)
{
if (size == GFTP_ETIMEDOUT)
{
ret = gftp_connect (fromreq);
if (ret < 0)
return (ret);
goto put_file;
}
if (gftp_abort_transfer (fromreq) != 0)
gftp_end_transfer (fromreq);
return (ret);
}
return (size);
}
ssize_t
gftp_get_next_file_chunk (gftp_request * request, char *buf, size_t size)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
g_return_val_if_fail (buf != NULL, GFTP_EFATAL);
if (request->get_next_file_chunk != NULL)
return (request->get_next_file_chunk (request, buf, size));
return (request->read_function (request, buf, size, request->datafd));
}
ssize_t
gftp_put_next_file_chunk (gftp_request * request, char *buf, size_t size)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
g_return_val_if_fail (buf != NULL, GFTP_EFATAL);
if (request->put_next_file_chunk != NULL)
return (request->put_next_file_chunk (request, buf, size));
return (request->write_function (request, buf, size, request->datafd));
}
int
gftp_end_transfer (gftp_request * request)
{
int ret;
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (!request->cached &&
request->end_transfer != NULL)
ret = request->end_transfer (request);
else
ret = 0;
if (request->cachefd > 0)
{
close (request->cachefd);
request->cachefd = -1;
}
if (request->last_dir_entry)
{
g_free (request->last_dir_entry);
request->last_dir_entry = NULL;
request->last_dir_entry_len = 0;
}
return (ret);
}
int
gftp_abort_transfer (gftp_request * request)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->abort_transfer == NULL)
return (GFTP_EFATAL);
/* FIXME - end the transfer if it is not successful */
return (request->abort_transfer (request));
}
int
gftp_stat_filename (gftp_request * request, const char *filename, mode_t * mode,
off_t * filesize)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
g_return_val_if_fail (filename != NULL, GFTP_EFATAL);
if (request->stat_filename != NULL)
return (request->stat_filename (request, filename, mode, filesize));
else
return (0);
}
int
gftp_list_files (gftp_request * request)
{
char *remote_lc_time, *locret;
int fd;
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
#if ENABLE_NLS
gftp_lookup_request_option (request, "remote_lc_time", &remote_lc_time);
if (remote_lc_time != NULL && *remote_lc_time != '\0')
locret = setlocale (LC_TIME, remote_lc_time);
else
locret = setlocale (LC_TIME, NULL);
if (locret == NULL)
{
locret = setlocale (LC_TIME, NULL);
request->logging_function (gftp_logging_error, request,
_("Error setting LC_TIME to '%s'. Falling back to '%s'\n"),
remote_lc_time, locret);
}
#else
locret = _("<unknown>");
#endif
request->cached = 0;
if (request->use_cache && (fd = gftp_find_cache_entry (request)) > 0)
{
request->logging_function (gftp_logging_misc, request,
_("Loading directory listing %s from cache (LC_TIME=%s)\n"),
request->directory, locret);
request->cachefd = fd;
request->cached = 1;
return (0);
}
else if (request->use_cache)
{
request->logging_function (gftp_logging_misc, request,
_("Loading directory listing %s from server (LC_TIME=%s)\n"),
request->directory, locret);
request->cachefd = gftp_new_cache_entry (request);
request->cached = 0;
}
if (request->list_files == NULL)
return (GFTP_EFATAL);
return (request->list_files (request));
}
int
gftp_get_next_file (gftp_request * request, const char *filespec,
gftp_file * fle)
{
char *slashpos, *tmpfile, *utf8;
size_t destlen;
int fd, ret;
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->get_next_file == NULL)
return (GFTP_EFATAL);
if (request->cached && request->cachefd > 0)
fd = request->cachefd;
else
fd = request->datafd;
memset (fle, 0, sizeof (*fle));
do
{
gftp_file_destroy (fle, 0);
ret = request->get_next_file (request, fle, fd);
if (fle->file != NULL && (slashpos = strrchr (fle->file, '/')) != NULL)
{
if (*(slashpos + 1) == '\0')
{
gftp_file_destroy (fle, 0);
continue;
}
*slashpos = '\0';
tmpfile = g_strdup (slashpos + 1);
if (strcmp (fle->file, request->directory) != 0)
request->logging_function (gftp_logging_error, request,
_("Warning: Stripping path off of file '%s'. The stripped path (%s) doesn't match the current directory (%s)\n"),
tmpfile, fle->file, request->directory,
g_strerror (errno));
g_free (fle->file);
fle->file = tmpfile;
}
if (ret >= 0 && fle->file != NULL)
{
if (g_utf8_validate (fle->file, -1, NULL))
fle->filename_utf8_encoded = 1;
else
{
utf8 = gftp_filename_to_utf8 (request, fle->file, &destlen);
if (utf8 != NULL)
{
g_free (fle->file);
fle->file = utf8;
fle->filename_utf8_encoded = 1;
}
}
}
if (ret >= 0 && !request->cached && request->cachefd > 0 &&
request->last_dir_entry != NULL)
{
if (gftp_fd_write (request, request->last_dir_entry,
request->last_dir_entry_len, request->cachefd) < 0)
{
request->logging_function (gftp_logging_error, request,
_("Error: Cannot write to cache: %s\n"),
g_strerror (errno));
close (request->cachefd);
request->cachefd = -1;
}
}
} while (ret > 0 && !gftp_match_filespec (request, fle->file, filespec));
return (ret);
}
int
gftp_parse_bookmark (gftp_request * request, gftp_request * local_request,
const char * bookmark, int *refresh_local)
{
gftp_logging_func logging_function;
gftp_bookmarks_var * tempentry;
char *default_protocol;
const char *email;
int i, init_ret;
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
g_return_val_if_fail (bookmark != NULL, GFTP_EFATAL);
logging_function = request->logging_function;
gftp_request_destroy (request, 0);
request->logging_function = logging_function;
if ((tempentry = g_hash_table_lookup (gftp_bookmarks_htable,
bookmark)) == NULL)
{
request->logging_function (gftp_logging_error, request,
_("Error: Could not find bookmark %s\n"),
bookmark);
return (GFTP_EFATAL);
}
else if (tempentry->hostname == NULL || *tempentry->hostname == '\0')
{
request->logging_function (gftp_logging_error, request,
_("Bookmarks Error: The bookmark entry %s does not have a hostname\n"), bookmark);
return (GFTP_EFATAL);
}
if (tempentry->user != NULL)
gftp_set_username (request, tempentry->user);
if (tempentry->pass != NULL)
{
if (strcmp (tempentry->pass, "@EMAIL@") == 0)
{
gftp_lookup_request_option (request, "email", &email);
gftp_set_password (request, email);
}
else
gftp_set_password (request, tempentry->pass);
}
if (tempentry->acct != NULL)
gftp_set_account (request, tempentry->acct);
gftp_set_hostname (request, tempentry->hostname);
gftp_set_directory (request, tempentry->remote_dir);
gftp_set_port (request, tempentry->port);
if (local_request != NULL && tempentry->local_dir != NULL &&
*tempentry->local_dir != '\0')
{
g_free(local_request->homedir);
local_request->homedir=g_strdup(tempentry->local_dir);
gftp_set_directory (local_request, tempentry->local_dir);
if (refresh_local != NULL)
*refresh_local = 1;
}
else if (refresh_local != NULL)
*refresh_local = 0;
for (i = 0; gftp_protocols[i].name; i++)
{
if (strcmp (gftp_protocols[i].name, tempentry->protocol) == 0)
{
if ((init_ret = gftp_protocols[i].init (request)) < 0)
{
gftp_request_destroy (request, 0);
return (init_ret);
}
break;
}
}
if (gftp_protocols[i].name == NULL)
{
gftp_lookup_request_option (request, "default_protocol",
&default_protocol);
if (default_protocol != NULL && *default_protocol != '\0')
{
for (i = 0; gftp_protocols[i].url_prefix; i++)
{
if (strcmp (gftp_protocols[i].name, default_protocol) == 0)
break;
}
}
if (gftp_protocols[i].url_prefix == NULL)
i = GFTP_FTP_NUM;
}
gftp_copy_local_options (&request->local_options_vars,
&request->local_options_hash,
&request->num_local_options_vars,
tempentry->local_options_vars,
tempentry->num_local_options_vars);
if ((init_ret = gftp_protocols[i].init (request)) < 0)
{
gftp_request_destroy (request, 0);
return (init_ret);
}
return (0);
}
int is_directory(char *path) {
struct stat statbuf;
if (stat(path, &statbuf) == -1)
return 0;
else
return S_ISDIR(statbuf.st_mode);
}
int
gftp_parse_url (gftp_request * request, const char *url)
{
char *pos, *endpos, *default_protocol, *new_url;
gftp_logging_func logging_function;
const char *clear_pos;
int i, ret;
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
g_return_val_if_fail (url != NULL, GFTP_EFATAL);
logging_function = request->logging_function;
gftp_request_destroy (request, 0);
request->logging_function = logging_function;
for (clear_pos = url;
*clear_pos == ' ' || *clear_pos == '\t';
clear_pos++);
new_url = g_strdup (clear_pos);
for (pos = new_url + strlen (new_url) - 1;
*pos == ' ' || *pos == '\t';
pos--)
*pos = '\0';
/* See if the URL has a protocol... */
if ((pos = strstr (new_url, "://")) != NULL)
{
*pos = '\0';
for (i = 0; gftp_protocols[i].url_prefix; i++)
{
if (strcmp (gftp_protocols[i].url_prefix, new_url) == 0)
break;
}
if (gftp_protocols[i].url_prefix == NULL)
{
request->logging_function (gftp_logging_error, NULL,
_("The protocol '%s' is currently not supported.\n"),
new_url);
g_free (new_url);
return (GFTP_EFATAL);
}
*pos = ':';
pos += 3;
}
else
{
gftp_lookup_request_option (request, "default_protocol",
&default_protocol);
i = GFTP_FTP_NUM;
if (default_protocol != NULL && *default_protocol != '\0')
{
for (i = 0; gftp_protocols[i].url_prefix; i++)
{
if (strcmp (gftp_protocols[i].name, default_protocol) == 0)
break;
}
}
if (gftp_protocols[i].url_prefix == NULL)
{
request->logging_function (gftp_logging_error, NULL,
_("The protocol '%s' is currently not supported.\n"),
default_protocol);
g_free (new_url);
return (GFTP_EFATAL);
}
pos = new_url;
}
if ((ret = gftp_protocols[i].init (request)) < 0)
{
gftp_request_destroy (request, 0);
return (ret);
}
if ((endpos = strchr (pos, '/')) != NULL)
{
if(is_directory(endpos))
{
gftp_set_directory (request, endpos);
*endpos = '\0';
}
else
{
if (request->directory)
g_free (request->directory);
request->directory = g_strdup (endpos);
}
}
if (request->parse_url != NULL)
{
ret = request->parse_url (request, new_url);
g_free (new_url);
return (ret);
}
if (*pos != '\0')
{
if (endpos == NULL)
endpos = pos + strlen (pos) - 1;
else
endpos--;
for (; isdigit (*endpos); endpos--);
if (*endpos == ':' && isdigit (*(endpos + 1)))
{
gftp_set_port (request, strtol (endpos + 1, NULL, 10));
*endpos = '\0';
}
if ((endpos = strrchr (pos, '@')) != NULL)
{
gftp_set_hostname (request, endpos + 1);
*endpos = '\0';
if ((endpos = strchr (pos, ':')) != NULL)
{
*endpos = '\0';
gftp_set_username (request, pos);
gftp_set_password (request, endpos + 1);
}
else
{
gftp_set_username (request, pos);
gftp_set_password (request, "");
}
}
else
gftp_set_hostname (request, pos);
}
g_free (new_url);
return (0);
}
void
gftp_set_hostname (gftp_request * request, const char *hostname)
{
g_return_if_fail (request != NULL);
g_return_if_fail (hostname != NULL);
if (request->hostname)
g_free (request->hostname);
request->hostname = g_strdup (hostname);
}
void
gftp_set_username (gftp_request * request, const char *username)
{
g_return_if_fail (request != NULL);
if (request->username)
g_free (request->username);
if (username != NULL)
request->username = g_strdup (username);
else
request->username = NULL;
}
void
gftp_set_password (gftp_request * request, const char *password)
{
g_return_if_fail (request != NULL);
if (request->password)
g_free (request->password);
if (password != NULL)
request->password = g_strdup (password);
else
request->password = NULL;
}
void
gftp_set_account (gftp_request * request, const char *account)
{
g_return_if_fail (request != NULL);
g_return_if_fail (account != NULL);
if (request->account)
g_free (request->account);
request->account = g_strdup (account);
}
int
gftp_set_directory (gftp_request * request, const char *directory)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
g_return_val_if_fail (directory != NULL, GFTP_EFATAL);
if (request->datafd <= 0 && !request->always_connected)
{
if (directory != request->directory)
{
if (request->directory)
g_free (request->directory);
request->directory = g_strdup (directory);
}
return (0);
}
else if (request->chdir == NULL)
return (GFTP_EFATAL);
return (request->chdir (request, directory));
}
void
gftp_set_port (gftp_request * request, unsigned int port)
{
g_return_if_fail (request != NULL);
request->port = port;
}
int
gftp_remove_directory (gftp_request * request, const char *directory)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->rmdir == NULL)
return (GFTP_EFATAL);
return (request->rmdir (request, directory));
}
int
gftp_remove_file (gftp_request * request, const char *file)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->rmfile == NULL)
return (GFTP_EFATAL);
return (request->rmfile (request, file));
}
int
gftp_make_directory (gftp_request * request, const char *directory)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->mkdir == NULL)
return (GFTP_EFATAL);
return (request->mkdir (request, directory));
}
int
gftp_rename_file (gftp_request * request, const char *oldname,
const char *newname)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->rename == NULL)
return (GFTP_EFATAL);
return (request->rename (request, oldname, newname));
}
int
gftp_chmod (gftp_request * request, const char *file, mode_t mode)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->chmod == NULL)
return (GFTP_EFATAL);
mode &= S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX;
return (request->chmod (request, file, mode));
}
int
gftp_set_file_time (gftp_request * request, const char *file, time_t datetime)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->set_file_time == NULL)
return (GFTP_EFATAL);
return (request->set_file_time (request, file, datetime));
}
int
gftp_site_cmd (gftp_request * request, int specify_site, const char *command)
{
g_return_val_if_fail (request != NULL, GFTP_EFATAL);
if (request->site == NULL)
return (GFTP_EFATAL);
return (request->site (request, specify_site, command));
}
off_t
gftp_get_file_size (gftp_request * request, const char *filename)
{
g_return_val_if_fail (request != NULL, 0);
if (request->get_file_size == NULL)
return (0);
return (request->get_file_size (request, filename));
}
static GHashTable *
gftp_gen_dir_hash (gftp_request * request, int *ret)
{
GHashTable * dirhash;
gftp_file * fle;
off_t *newsize;
dirhash = g_hash_table_new (string_hash_function, string_hash_compare);
*ret = gftp_list_files (request);
if (*ret == 0)
{
fle = g_malloc0 (sizeof (*fle));
while (gftp_get_next_file (request, NULL, fle) > 0)
{
newsize = g_malloc0 (sizeof (*newsize));
*newsize = fle->size;
g_hash_table_insert (dirhash, fle->file, newsize);
fle->file = NULL;
gftp_file_destroy (fle, 0);
}
gftp_end_transfer (request);
g_free (fle);
}
else
{
g_hash_table_destroy (dirhash);
dirhash = NULL;
}
return (dirhash);
}
static void
destroy_hash_ent (gpointer key, gpointer value, gpointer user_data)
{
g_free (key);
g_free (value);
}
static void
gftp_destroy_dir_hash (GHashTable * dirhash)
{
if (dirhash == NULL)
return;
g_hash_table_foreach (dirhash, destroy_hash_ent, NULL);
g_hash_table_destroy (dirhash);