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Fixing more errno handling.

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This commit is contained in:
Klaas Freitag 2012-12-06 13:15:01 +01:00
parent f461903a1a
commit e6ad2140eb
1 changed files with 102 additions and 118 deletions
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188
modules/csync_owncloud.c
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@ -52,7 +52,7 @@
#include "csync_log.h"
#if 1 || defined(NDEBUG)
#define DEBUG_WEBDAV(...)
#define DEBUG_WEBDAV(...) {printf(__VA_ARGS__); printf("\n");}
#else // FIXME: can't use CSYNC_LOG here because there is no ctx
#define DEBUG_WEBDAV(...) CSYNC_LOG(CSYNC_LOG_PRIORITY_DEBUG, __VA_ARGS__)
#endif
@ -192,45 +192,6 @@ csync_vio_file_stat_t _stat_cache;
char _buffer[PUT_BUFFER_SIZE];
/* ***************************************************************************** */
static void set_errno_from_neon_errcode( int neon_code ) {
switch(neon_code) {
case NE_OK: /* Success */
errno = 0;
break;
case NE_ERROR: /* Generic error; use ne_get_error(session) for message */
errno = ERRNO_GENERAL_ERROR;
break;
case NE_LOOKUP: /* Server or proxy hostname lookup failed */
errno = ERRNO_LOOKUP_ERROR;
break;
case NE_AUTH: /* User authentication failed on server */
errno = ERRNO_USER_UNKNOWN_ON_SERVER;
break;
case NE_PROXYAUTH: /* User authentication failed on proxy */
errno = ERRNO_PROXY_AUTH;
break;
case NE_CONNECT: /* Could not connect to server */
errno = ERRNO_CONNECT;
break;
case NE_TIMEOUT: /* Connection timed out */
errno = ERRNO_TIMEOUT;
break;
case NE_FAILED: /* The precondition failed */
errno = ERRNO_PRECONDITION;
break;
case NE_RETRY: /* Retry request (ne_end_request ONLY) */
errno = ERRNO_RETRY;
break;
case NE_REDIRECT: /* See ne_redirect.h */
errno = ERRNO_REDIRECT;
break;
default:
errno = ERRNO_GENERAL_ERROR;
}
}
static void set_errno_from_http_errcode( int err ) {
int new_errno = 0;
@ -326,6 +287,62 @@ static void set_errno_from_session() {
}
}
static void set_errno_from_neon_errcode( int neon_code ) {
switch(neon_code) {
case NE_OK: /* Success, but still the possiblity of problems */
case NE_ERROR: /* Generic error; use ne_get_error(session) for message */
set_errno_from_session(); /* Something wrong with http communication */
break;
case NE_LOOKUP: /* Server or proxy hostname lookup failed */
errno = ERRNO_LOOKUP_ERROR;
break;
case NE_AUTH: /* User authentication failed on server */
errno = ERRNO_USER_UNKNOWN_ON_SERVER;
break;
case NE_PROXYAUTH: /* User authentication failed on proxy */
errno = ERRNO_PROXY_AUTH;
break;
case NE_CONNECT: /* Could not connect to server */
errno = ERRNO_CONNECT;
break;
case NE_TIMEOUT: /* Connection timed out */
errno = ERRNO_TIMEOUT;
break;
case NE_FAILED: /* The precondition failed */
errno = ERRNO_PRECONDITION;
break;
case NE_RETRY: /* Retry request (ne_end_request ONLY) */
errno = ERRNO_RETRY;
break;
case NE_REDIRECT: /* See ne_redirect.h */
errno = ERRNO_REDIRECT;
break;
default:
errno = ERRNO_GENERAL_ERROR;
}
}
/* cleanPath to return an escaped path of an uri */
static char *_cleanPath( const char* uri ) {
int rc = 0;
char *path = NULL;
char *re = NULL;
rc = c_parse_uri( uri, NULL, NULL, NULL, NULL, NULL, &path );
if( rc < 0 ) {
DEBUG_WEBDAV("Unable to cleanPath %s", uri ? uri: "<zero>" );
re = NULL;
} else {
re = ne_path_escape( path );
}
DEBUG_WEBDAV("------------> Path in cleanpath: %s", path );
SAFE_FREE( path );
return re;
}
/*
* helper method to build up a user text for SSL problems, called from the
* verify_sslcert callback.
@ -606,7 +623,7 @@ static void request_created_hook(ne_request *req, void *userdata,
if( !req ) return;
if(dav_session.session_key) {
DEBUG_WEBDAV("Setting PHPSESSID to %s", dav_session.session_key);
/* DEBUG_WEBDAV("Setting PHPSESSID to %s", dav_session.session_key); */
ne_add_request_header(req, "Cookie", dav_session.session_key);
}
@ -900,10 +917,8 @@ static void results(void *userdata,
/*
* fetches a resource list from the WebDAV server. This is equivalent to list dir.
*
* takes ownership of curi
*/
static struct listdir_context *fetch_resource_list(char *curi, int depth)
static struct listdir_context *fetch_resource_list(const char *uri, int depth)
{
struct listdir_context *fetchCtx;
int ret = 0;
@ -911,11 +926,14 @@ static struct listdir_context *fetch_resource_list(char *curi, int depth)
ne_request *request = NULL;
const char *date_header = NULL;
const char *content_type = NULL;
char *curi = NULL;
time_t server_time;
time_t now;
time_t time_diff;
time_t time_diff_delta;
curi = _cleanPath( uri );
if (propfind_cache) {
if (c_streq(curi, propfind_cache->target)) {
propfind_cache->ref++;
@ -938,16 +956,15 @@ static struct listdir_context *fetch_resource_list(char *curi, int depth)
/* do a propfind request and parse the results in the results function, set as callback */
hdl = ne_propfind_create(dav_session.ctx, curi, depth);
if(hdl)
ret = ne_propfind_named(hdl, ls_props, results, fetchCtx);
if( ret == NE_OK ) {
const ne_status *req_status = NULL;
fetchCtx->currResource = fetchCtx->list;
if(hdl) {
ret = ne_propfind_named(hdl, ls_props, results, fetchCtx);
request = ne_propfind_get_request( hdl );
req_status = ne_get_status( request );
}
if( ret == NE_OK ) {
fetchCtx->currResource = fetchCtx->list;
/* Check the request status. */
if( req_status->klass != 2 ) {
set_errno_from_http_errcode(req_status->code);
@ -956,9 +973,13 @@ static struct listdir_context *fetch_resource_list(char *curi, int depth)
ret = NE_CONNECT;
}
DEBUG_WEBDAV("Simple propfind result code %d.", req_status->code);
} else {
if( ret == NE_ERROR && req_status->code == 404) {
errno = ENOENT;
} else {
set_errno_from_neon_errcode(ret);
}
}
if( ret == NE_OK ) {
/* Check the content type. If the server has a problem, ie. database is gone or such,
@ -1088,23 +1109,6 @@ static csync_vio_file_stat_t *resourceToFileStat( struct resource *res )
return lfs;
}
/* cleanPath to return an escaped path of an uri */
static char *_cleanPath( const char* uri ) {
int rc = 0;
char *path = NULL;
char *re = NULL;
rc = c_parse_uri( uri, NULL, NULL, NULL, NULL, NULL, &path );
if( rc < 0 ) {
DEBUG_WEBDAV("Unable to cleanPath %s", uri ? uri: "<zero>" );
re = NULL;
} else {
re = ne_path_escape( path );
}
SAFE_FREE( path );
return re;
}
/* WebDAV does not deliver permissions. Set a default here. */
static int _stat_perms( int type ) {
int ret = 0;
@ -1155,7 +1159,6 @@ static int owncloud_stat(const char *uri, csync_vio_file_stat_t *buf) {
*/
csync_vio_file_stat_t *lfs = NULL;
struct listdir_context *fetchCtx = NULL;
char *curi = NULL;
char *decodedUri = NULL;
char strbuf[PATH_MAX +1];
int len = 0;
@ -1190,8 +1193,8 @@ static int owncloud_stat(const char *uri, csync_vio_file_stat_t *buf) {
}
/* fetch data via a propfind call. */
curi = _cleanPath( uri );
fetchCtx = fetch_resource_list( curi, NE_DEPTH_ONE);
fetchCtx = fetch_resource_list( uri, NE_DEPTH_ONE);
DEBUG_WEBDAV("=> Errno after fetch resource list for %s: %d", uri, errno);
if (!fetchCtx) {
return -1;
}
@ -1362,17 +1365,7 @@ static const char* owncloud_file_id( const char *path )
* ETag header back. */
req = ne_request_create(dav_session.ctx, "HEAD", uri);
neon_stat = ne_request_dispatch(req);
if( neon_stat != NE_OK ) {
set_errno_from_neon_errcode( neon_stat );
} else {
status = ne_get_status(req);
if( status->klass != 2 ) {
DEBUG_WEBDAV("HEAD request failed: %s!", status->reason_phrase);
set_errno_from_http_errcode( status->code );
} else {
DEBUG_WEBDAV("http request all cool, result code %d", status->code);
}
}
header = ne_get_response_header(req, "etag");
}
@ -1580,11 +1573,8 @@ static int owncloud_sendfile(csync_vio_method_handle_t *src, csync_vio_method_ha
/* Start the request. */
neon_stat = ne_request_dispatch( write_ctx->req );
if( neon_stat != NE_OK ) {
set_errno_from_neon_errcode( neon_stat );
/* FIXME: The -1 aborts the whole sync. Correct? */
rc = -1;
} else {
status = ne_get_status( request );
if( status->klass != 2 ) {
DEBUG_WEBDAV("sendfile request failed with http status %d!", status->code);
@ -1595,10 +1585,13 @@ static int owncloud_sendfile(csync_vio_method_handle_t *src, csync_vio_method_ha
} else {
rc = -1;
}
if( status->klass == 5 /* Server errors and such */ ) {
rc = -1; /* Abort. */
}
} else {
DEBUG_WEBDAV("http request all cool, result code %d", status->code);
}
}
if (_progresscb) {
ne_set_notifier(dav_session.ctx, 0, 0);
_progresscb(write_ctx->clean_uri, rc != NE_OK ? CSYNC_NOTFY_ERROR : CSYNC_NOTIFY_FINISHED,
@ -1631,6 +1624,7 @@ static int owncloud_sendfile(csync_vio_method_handle_t *src, csync_vio_method_ha
} 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. */
if( status->klass == 4 /* Forbidden and stuff, soft error */ ) {
@ -1638,6 +1632,11 @@ static int owncloud_sendfile(csync_vio_method_handle_t *src, csync_vio_method_ha
} else {
rc = -1;
}
if( status->klass == 5 /* Server errors and such */ ) {
rc = -1; /* Abort. */
}
} else {
DEBUG_WEBDAV("http request all cool, result code %d", status->code);
}
}
@ -1669,6 +1668,7 @@ static int owncloud_close(csync_vio_method_handle_t *fhandle) {
writeCtx = (struct transfer_context*) fhandle;
if (fhandle == NULL) {
DEBUG_WEBDAV("*** Close returns errno EBADF!");
errno = EBADF;
return -1;
}
@ -1710,13 +1710,12 @@ static off_t owncloud_lseek(csync_vio_method_handle_t *fhandle, off_t offset, in
*/
static csync_vio_method_handle_t *owncloud_opendir(const char *uri) {
struct listdir_context *fetchCtx = NULL;
char *curi = _cleanPath( uri );
DEBUG_WEBDAV("opendir method called on %s", uri );
dav_connect( uri );
fetchCtx = fetch_resource_list( curi, NE_DEPTH_ONE );
fetchCtx = fetch_resource_list( uri, NE_DEPTH_ONE );
if( !fetchCtx ) {
/* errno is set properly in fetch_resource_list */
DEBUG_WEBDAV("Errno set to %d", errno);
@ -1808,11 +1807,7 @@ static int owncloud_mkdir(const char *uri, mode_t mode) {
DEBUG_WEBDAV("MKdir on %s", buf );
rc = ne_mkcol(dav_session.ctx, buf );
if( rc != NE_OK ) {
set_errno_from_neon_errcode(rc);
} else {
set_errno_from_session();
}
}
}
SAFE_FREE( path );
@ -1834,11 +1829,7 @@ static int owncloud_rmdir(const char *uri) {
if( rc >= 0 ) {
rc = ne_delete(dav_session.ctx, curi);
if ( rc != NE_OK ) {
set_errno_from_neon_errcode( rc );
} else {
set_errno_from_session();
}
}
SAFE_FREE( curi );
if( rc < 0 || rc != NE_OK ) {
@ -1866,11 +1857,7 @@ static int owncloud_rename(const char *olduri, const char *newuri) {
DEBUG_WEBDAV("MOVE: %s => %s: %d", src, target, rc );
rc = ne_move(dav_session.ctx, 1, src, target );
if (rc != NE_OK ) {
set_errno_from_neon_errcode(rc);
} else {
set_errno_from_session();
}
}
SAFE_FREE( src );
SAFE_FREE( target );
@ -1896,10 +1883,7 @@ static int owncloud_unlink(const char *uri) {
}
if( rc == NE_OK ) {
rc = ne_delete( dav_session.ctx, path );
if ( rc != NE_OK )
set_errno_from_neon_errcode(rc);
else
set_errno_from_session();
}
SAFE_FREE( path );