/* Gets a file from the owncloud url to the open file descriptor. */
static int owncloud_get(csync_vio_method_handle_t *flocal,
csync_vio_method_handle_t *fremote,
csync_vio_file_stat_t *vfs) {
int rc = 0;
int neon_stat;
const ne_status *status;
int fd;
struct transfer_context *write_ctx = (struct transfer_context*) fremote;
(void) vfs; /* stat information of the source file */
fd = csync_vio_getfd(flocal);
if (fd == -1) {
errno = EINVAL;
return -1;
}
/* GET a file to the open file descriptor */
if( write_ctx == NULL ) {
errno = EINVAL;
return -1;
}
if( write_ctx->req == NULL ) {
errno = EINVAL;
return -1;
}
DEBUG_WEBDAV(" -- GET on %s", write_ctx->url);
write_ctx->fd = fd;
/* Allow compressed content by setting the header */
ne_add_request_header( write_ctx->req, "Accept-Encoding", "gzip,deflate" );
/* hook called before the content is parsed to set the correct reader,
* either the compressed- or uncompressed reader.
*/
ne_hook_post_headers( dav_session.ctx, install_content_reader, write_ctx );
neon_stat = ne_request_dispatch(write_ctx->req );
/* possible return codes are:
* NE_OK, NE_AUTH, NE_CONNECT, NE_TIMEOUT, NE_ERROR (from ne_request.h)
*/
if( neon_stat != NE_OK ) {
set_errno_from_neon_errcode(neon_stat);
DEBUG_WEBDAV("Error GET: Neon: %d, errno %d", neon_stat, errno);
rc = -1;
} else {
status = ne_get_status( write_ctx->req );
if( status->klass != 2 ) {
DEBUG_WEBDAV("sendfile request failed with http status %d!", status->code);
set_errno_from_http_errcode( status->code );
/* decide if soft error or hard error that stops the whole sync. */
/* Currently all problems concerning one file are soft errors */
if( status->klass == 4 /* Forbidden and stuff, soft error */ ) {
rc = 1;
} else if( status->klass == 5 /* Server errors and such */ ) {
rc = 1; /* No Abort on individual file errors. */
} else {
rc = 1;
}
} else {
DEBUG_WEBDAV("http request all cool, result code %d (%s)", status->code,
status->reason_phrase ? status->reason_phrase : "<empty>");
}
}
/* delete the hook again, otherwise they get chained as they are with the session */
ne_unhook_post_headers( dav_session.ctx, install_content_reader, write_ctx );
/* if the compression handle is set through the post_header hook, delete it. */
if( write_ctx->decompress ) {
ne_decompress_destroy( write_ctx->decompress );
}
return rc;
}
static csync_vio_method_handle_t *owncloud_open(const char *durl,
int flags,
mode_t mode) {
char *uri = NULL;
char *dir = NULL;
char getUrl[PATH_MAX];
int put = 0;
int rc = NE_OK;
#ifdef _WIN32
int gtp = 0;
char tmpname[13];
#endif
struct transfer_context *writeCtx = NULL;
csync_stat_t statBuf;
memset( getUrl, '\0', PATH_MAX );
(void) mode; /* unused on webdav server */
DEBUG_WEBDAV(( "=> open called for %s\n", durl ));
uri = _cleanPath( durl );
if( ! uri ) {
DEBUG_WEBDAV(("Failed to clean path for %s\n", durl ));
errno = EACCES;
rc = NE_ERROR;
}
if( rc == NE_OK )
dav_connect( durl );
if (flags & O_WRONLY) {
put = 1;
}
if (flags & O_RDWR) {
put = 1;
}
if (flags & O_CREAT) {
put = 1;
}
if( rc == NE_OK && put ) {
/* check if the dir name exists. Otherwise return ENOENT */
dir = c_dirname( durl );
if (dir == NULL) {
errno = ENOMEM;
return NULL;
}
DEBUG_WEBDAV(("Stating directory %s\n", dir ));
if( c_streq( dir, _lastDir )) {
DEBUG_WEBDAV(("Dir %s is there, we know it already.\n", dir));
} else {
if( owncloud_stat( dir, (csync_vio_method_handle_t*)(&statBuf) ) == 0 ) {
DEBUG_WEBDAV(("Directory of file to open exists.\n"));
SAFE_FREE( _lastDir );
_lastDir = c_strdup(dir);
} else {
DEBUG_WEBDAV(("Directory %s of file to open does NOT exist.\n", dir ));
/* the directory does not exist. That is an ENOENT */
errno = ENOENT;
SAFE_FREE( dir );
return NULL;
}
}
}
writeCtx = c_malloc( sizeof(struct transfer_context) );
writeCtx->bytes_written = 0;
if( rc == NE_OK ) {
/* open a temp file to store the incoming data */
#ifdef _WIN32
memset( tmpname, '\0', 13 );
gtp = GetTempPath( PATH_MAX, getUrl );
DEBUG_WEBDAV(("win32 tmp path: %s\n", getUrl ));
if ( gtp > MAX_PATH || (gtp == 0) ) {
DEBUG_WEBDAV(("Failed to compute Win32 tmp path, trying /tmp\n"));
strcpy( getUrl, "/tmp/");
}
strcpy( tmpname, "csync.XXXXXX" );
if( c_tmpname( tmpname ) == 0 ) {
_fmode = _O_BINARY;
strcat( getUrl, tmpname );
writeCtx->tmpFileName = c_strdup( getUrl );
writeCtx->fd = open( writeCtx->tmpFileName, O_RDWR | O_CREAT | O_EXCL, 0600 );
} else {
writeCtx->fd = -1;
}
#else
writeCtx->tmpFileName = c_strdup( "/tmp/csync.XXXXXX" );
writeCtx->fd = mkstemp( writeCtx->tmpFileName );
#endif
DEBUG_WEBDAV(("opening temp directory %s: %d\n", writeCtx->tmpFileName, writeCtx->fd ));
if( writeCtx->fd == -1 ) {
DEBUG_WEBDAV(("Failed to open temp file, errno = %d\n", errno ));
rc = NE_ERROR;
/* errno is set by the mkstemp call above. */
}
}
if( rc == NE_OK && put) {
DEBUG_WEBDAV(("PUT request on %s!\n", uri));
/* reset the write buffer */
writeCtx->bytes_written = 0;
writeCtx->fileWritten = 0; /* flag to indicate if contents was pushed to file */
writeCtx->req = ne_request_create(dav_session.ctx, "PUT", uri);
writeCtx->method = "PUT";
}
if( rc == NE_OK && ! put ) {
writeCtx->req = 0;
writeCtx->method = "GET";
/* Download the data into a local temp file. */
/* the download via the get function requires a full uri */
snprintf( getUrl, PATH_MAX, "%s://%s%s", ne_get_scheme( dav_session.ctx),
ne_get_server_hostport( dav_session.ctx ), uri );
DEBUG_WEBDAV(("GET request on %s\n", getUrl ));
#define WITH_HTTP_COMPRESSION
#ifdef WITH_HTTP_COMPRESSION
writeCtx->req = ne_request_create( dav_session.ctx, "GET", getUrl );
/* Allow compressed content by setting the header */
ne_add_request_header( writeCtx->req, "Accept-Encoding", "gzip,deflate" );
/* hook called before the content is parsed to set the correct reader,
* either the compressed- or uncompressed reader.
*/
ne_hook_post_headers( dav_session.ctx, install_content_reader, writeCtx );
/* actually do the request */
rc = ne_request_dispatch(writeCtx->req );
/* possible return codes are:
* NE_OK, NE_AUTH, NE_CONNECT, NE_TIMEOUT, NE_ERROR (from ne_request.h)
*/
if( rc != NE_OK || (rc == NE_OK && ne_get_status(writeCtx->req)->klass != 2) ) {
DEBUG_WEBDAV(("request_dispatch failed with rc=%d\n", rc ));
if( rc == NE_OK ) rc = NE_ERROR;
errno = EACCES;
}
/* delete the hook again, otherwise they get chained as they are with the session */
ne_unhook_post_headers( dav_session.ctx, install_content_reader, writeCtx );
/* if the compression handle is set through the post_header hook, delete it. */
if( writeCtx->decompress ) {
ne_decompress_destroy( writeCtx->decompress );
}
/* delete the request in any case */
ne_request_destroy(writeCtx->req);
#else
DEBUG_WEBDAV(("GET Compression not supported!\n"));
rc = ne_get( dav_session.ctx, getUrl, writeCtx->fd ); /* FIX_ESCAPE? */
#endif
if( rc != NE_OK ) {
DEBUG_WEBDAV(("Download to local file failed: %d.\n", rc));
errno = EACCES;
}
if( close( writeCtx->fd ) == -1 ) {
DEBUG_WEBDAV(("Close of local download file failed.\n"));
writeCtx->fd = -1;
rc = NE_ERROR;
errno = EACCES;
}
writeCtx->fd = -1;
}
if( rc != NE_OK ) {
SAFE_FREE( writeCtx );
}
SAFE_FREE( uri );
SAFE_FREE( dir );
return (csync_vio_method_handle_t *) writeCtx;
}