Add error codes and better handling.
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@ -41,6 +41,7 @@
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#include <dirent.h>
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#include <fcntl.h>
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#include <fnmatch.h>
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#include <errno.h>
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#ifdef ENABLE_WINPR
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#include <winpr/stream.h>
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@ -111,6 +112,44 @@ static void __guac_rdpdr_fs_translate_path(guac_rdpdr_device* device,
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}
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int guac_rdpdr_fs_get_errorcode(int err) {
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/* Translate errno codes to GUAC_RDPDR_FS codes */
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if (err == ENFILE) return GUAC_RDPDR_FS_ENFILE;
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if (err == ENOENT) return GUAC_RDPDR_FS_ENOENT;
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if (err == ENOTDIR) return GUAC_RDPDR_FS_ENOTDIR;
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if (err == ENOSPC) return GUAC_RDPDR_FS_ENOSPC;
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if (err == EISDIR) return GUAC_RDPDR_FS_EISDIR;
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if (err == EACCES) return GUAC_RDPDR_FS_EACCES;
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if (err == EEXIST) return GUAC_RDPDR_FS_EEXIST;
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if (err == EINVAL) return GUAC_RDPDR_FS_EINVAL;
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if (err == ENOSYS) return GUAC_RDPDR_FS_ENOSYS;
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if (err == ENOTSUP) return GUAC_RDPDR_FS_ENOTSUP;
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/* Default to invalid parameter */
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return GUAC_RDPDR_FS_EINVAL;
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}
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int guac_rdpdr_fs_get_status(int err) {
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/* Translate GUAC_RDPDR_FS error code to RDPDR status code */
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if (err == GUAC_RDPDR_FS_ENFILE) return STATUS_NO_MORE_FILES;
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if (err == GUAC_RDPDR_FS_ENOENT) return STATUS_NO_SUCH_FILE;
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if (err == GUAC_RDPDR_FS_ENOTDIR) return STATUS_NOT_A_DIRECTORY;
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if (err == GUAC_RDPDR_FS_ENOSPC) return STATUS_DISK_FULL;
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if (err == GUAC_RDPDR_FS_EISDIR) return STATUS_FILE_IS_A_DIRECTORY;
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if (err == GUAC_RDPDR_FS_EACCES) return STATUS_ACCESS_DENIED;
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if (err == GUAC_RDPDR_FS_EEXIST) return STATUS_OBJECT_NAME_COLLISION;
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if (err == GUAC_RDPDR_FS_EINVAL) return STATUS_INVALID_PARAMETER;
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if (err == GUAC_RDPDR_FS_ENOSYS) return STATUS_NOT_IMPLEMENTED;
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if (err == GUAC_RDPDR_FS_ENOTSUP) return STATUS_NOT_SUPPORTED;
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/* Default to invalid parameter */
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return STATUS_INVALID_PARAMETER;
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}
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int guac_rdpdr_fs_open(guac_rdpdr_device* device, const char* path,
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int access, int file_attributes, int create_disposition,
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int create_options) {
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@ -195,7 +234,7 @@ int guac_rdpdr_fs_open(guac_rdpdr_device* device, const char* path,
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/* Unrecognised disposition */
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default:
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return GUAC_RDPDR_FS_ENOENT; /* FIXME: Replace with real return value */
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return GUAC_RDPDR_FS_ENOSYS;
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}
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@ -206,7 +245,7 @@ int guac_rdpdr_fs_open(guac_rdpdr_device* device, const char* path,
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/* Open file */
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fd = open(real_path, flags, S_IRUSR | S_IWUSR);
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if (fd == -1)
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return GUAC_RDPDR_FS_ENOENT;
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return guac_rdpdr_fs_get_errorcode(errno);
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/* Get file ID, init file */
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file_id = guac_pool_next_int(data->file_id_pool);
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@ -83,10 +83,54 @@
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#define GUAC_RDPDR_FS_ENFILE -1
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/**
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* Error code returned with no such file exists.
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* Error code returned when no such file exists.
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*/
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#define GUAC_RDPDR_FS_ENOENT -2
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/**
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* Error code returned when the operation required a directory
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* but the file was not a directory.
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*/
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#define GUAC_RDPDR_FS_ENOTDIR -3
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/**
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* Error code returned when insufficient space exists to complete
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* the operation.
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*/
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#define GUAC_RDPDR_FS_ENOSPC -4
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/**
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* Error code returned when the operation requires a normal file but
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* a directory was given.
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*/
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#define GUAC_RDPDR_FS_EISDIR -5
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/**
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* Error code returned when permission is denied.
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*/
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#define GUAC_RDPDR_FS_EACCES -6
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/**
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* Error code returned when the operation cannot be completed because the
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* file already exists.
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*/
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#define GUAC_RDPDR_FS_EEXIST -7
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/**
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* Error code returned when invalid parameters were given.
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*/
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#define GUAC_RDPDR_FS_EINVAL -8
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/**
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* Error code returned when the operation is not implemented.
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*/
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#define GUAC_RDPDR_FS_ENOSYS -9
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/**
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* Error code returned when the operation is not supported.
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*/
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#define GUAC_RDPDR_FS_ENOTSUP -10
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/*
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* Access constants.
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*/
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@ -240,6 +284,16 @@ void guac_rdpdr_register_fs(guac_rdpdrPlugin* rdpdr);
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*/
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int guac_rdpdr_fs_convert_path(const char* parent, const char* rel_path, char* abs_path);
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/**
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* Translates the given errno error code to a GUAC_RDPDR_FS error code.
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*/
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int guac_rdpdr_fs_get_errorcode(int err);
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/**
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* Teanslates the given GUAC_RDPDR_FS error code to an RDPDR status code.
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*/
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int guac_rdpdr_fs_get_status(int err);
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/**
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* Returns the next available file ID, or an error code less than zero
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* if an error occurs.
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@ -86,24 +86,13 @@ void guac_rdpdr_fs_process_create(guac_rdpdr_device* device,
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file_id = guac_rdpdr_fs_open(device, path, desired_access, file_attributes,
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create_disposition, create_options);
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/* If no file IDs available, notify server */
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if (file_id == GUAC_RDPDR_FS_ENFILE) {
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/* If an error occurred, notify server */
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if (file_id < 0) {
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guac_client_log_error(device->rdpdr->client,
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"File open refused - too many open files");
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"File open refused (%i): \"%s\"", file_id, path);
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output_stream = guac_rdpdr_new_io_completion(device, completion_id,
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STATUS_TOO_MANY_OPENED_FILES, 5);
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Stream_Write_UINT32(output_stream, 0); /* fileId */
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Stream_Write_UINT8(output_stream, 0); /* information */
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}
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/* If file does not exist, notify server */
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else if (file_id == GUAC_RDPDR_FS_ENOENT) {
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guac_client_log_error(device->rdpdr->client,
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"File open refused - does not exist: \"%s\"", path);
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output_stream = guac_rdpdr_new_io_completion(device, completion_id,
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STATUS_NO_SUCH_FILE, 5);
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guac_rdpdr_fs_get_status(file_id), 5);
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Stream_Write_UINT32(output_stream, 0); /* fileId */
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Stream_Write_UINT8(output_stream, 0); /* information */
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}
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@ -204,12 +204,17 @@
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#define STATUS_SUCCESS 0x00000000
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#define STATUS_NO_MORE_FILES 0x80000006
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#define STATUS_DEVICE_OFF_LINE 0x80000010
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#define STATUS_NOT_IMPLEMENTED 0xC0000002
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#define STATUS_INVALID_PARAMETER 0xC000000D
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#define STATUS_NO_SUCH_FILE 0xC000000F
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#define STATUS_END_OF_FILE 0xC0000011
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#define STATUS_ACCESS_DENIED 0xC0000022
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#define STATUS_OBJECT_NAME_COLLISION 0xC0000035
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#define STATUS_DISK_FULL 0xC000007F
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#define STATUS_FILE_INVALID 0xC0000098
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#define STATUS_FILE_IS_A_DIRECTORY 0xC00000BA
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#define STATUS_NOT_SUPPORTED 0xC00000BB
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#define STATUS_NOT_A_DIRECTORY 0xC0000103
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#define STATUS_TOO_MANY_OPENED_FILES 0xC000011F
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#define STATUS_CANNOT_DELETE 0xC0000121
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#define STATUS_FILE_DELETED 0xC0000123
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