--- sourceforge.net/trunk/rdesktop/rdpdr.c 2003/12/09 09:59:26 555 +++ sourceforge.net/trunk/rdesktop/rdpdr.c 2004/04/15 20:11:19 650 @@ -1,17 +1,149 @@ +#include +#include +#include +#include /* opendir, closedir, readdir */ +#include #include "rdesktop.h" -#define IRP_MJ_CREATE 0x00 -#define IRP_MJ_CLOSE 0x02 -#define IRP_MJ_READ 0x03 -#define IRP_MJ_WRITE 0x04 -#define IRP_MJ_DEVICE_CONTROL 0x0e +#define IRP_MJ_CREATE 0x00 +#define IRP_MJ_CLOSE 0x02 +#define IRP_MJ_READ 0x03 +#define IRP_MJ_WRITE 0x04 +#define IRP_MJ_QUERY_INFORMATION 0x05 +#define IRP_MJ_SET_INFORMATION 0x06 +#define IRP_MJ_QUERY_VOLUME_INFORMATION 0x0a +#define IRP_MJ_DIRECTORY_CONTROL 0x0c +#define IRP_MJ_DEVICE_CONTROL 0x0e +#define IRP_MJ_LOCK_CONTROL 0x11 + +#define IRP_MN_QUERY_DIRECTORY 0x01 +#define IRP_MN_NOTIFY_CHANGE_DIRECTORY 0x02 extern char hostname[16]; extern DEVICE_FNS serial_fns; extern DEVICE_FNS printer_fns; +extern DEVICE_FNS parallel_fns; +extern DEVICE_FNS disk_fns; +extern FILEINFO g_fileinfo[]; static VCHANNEL *rdpdr_channel; +/* If select() times out, the request for the device with handle g_min_timeout_fd is aborted */ +HANDLE g_min_timeout_fd; +uint32 g_num_devices; + +/* Table with information about rdpdr devices */ +RDPDR_DEVICE g_rdpdr_device[RDPDR_MAX_DEVICES]; +char * g_rdpdr_clientname = NULL; + +/* Used to store incoming io request, until they are ready to be completed */ +/* using a linked list ensures that they are processed in the right order, */ +/* if multiple ios are being done on the same fd */ +struct async_iorequest +{ + uint32 fd, major, minor, offset, device, id, length, partial_len; + long timeout, /* Total timeout */ + itv_timeout; /* Interval timeout (between serial characters) */ + uint8 *buffer; + DEVICE_FNS *fns; + + struct async_iorequest *next; /* next element in list */ +}; + +struct async_iorequest *g_iorequest; + +/* Return device_id for a given handle */ +int +get_device_index(HANDLE handle) +{ + int i; + for (i = 0; i < RDPDR_MAX_DEVICES; i++) + { + if (g_rdpdr_device[i].handle == handle) + return i; + } + return -1; +} + +/* Converts a windows path to a unix path */ +void +convert_to_unix_filename(char *filename) +{ + char *p; + + while ((p = strchr(filename, '\\'))) + { + *p = '/'; + } +} + +BOOL +rdpdr_handle_ok(int device, int handle) +{ + switch (g_rdpdr_device[device].device_type) + { + case DEVICE_TYPE_PARALLEL: + case DEVICE_TYPE_SERIAL: + case DEVICE_TYPE_PRINTER: + case DEVICE_TYPE_SCARD: + if (g_rdpdr_device[device].handle != handle) + return False; + break; + case DEVICE_TYPE_DISK: + if (g_fileinfo[handle].device_id != device) + return False; + break; + } + return True; +} + +/* Add a new io request to the table containing pending io requests so it won't block rdesktop */ +BOOL +add_async_iorequest(uint32 device, uint32 file, uint32 id, uint32 major, uint32 length, + DEVICE_FNS * fns, uint32 total_timeout, uint32 interval_timeout, uint8 * buffer, + uint32 offset) +{ + struct async_iorequest *iorq; + + if (g_iorequest == NULL) + { + g_iorequest = (struct async_iorequest *) xmalloc(sizeof(struct async_iorequest)); + if (!g_iorequest) + return False; + g_iorequest->fd = 0; + g_iorequest->next = NULL; + } + + iorq = g_iorequest; + + while (iorq->fd != 0) + { + // create new element if needed + if (iorq->next == NULL) + { + iorq->next = + (struct async_iorequest *) xmalloc(sizeof(struct async_iorequest)); + if (!iorq->next) + return False; + iorq->next->fd = 0; + iorq->next->next = NULL; + } + iorq = iorq->next; + } + iorq->device = device; + iorq->fd = file; + iorq->id = id; + iorq->major = major; + iorq->length = length; + iorq->partial_len = 0; + iorq->fns = fns; + iorq->timeout = total_timeout; + iorq->itv_timeout = interval_timeout; + iorq->buffer = buffer; + iorq->offset = offset; + return True; +} + void rdpdr_send_connect(void) { @@ -27,12 +159,18 @@ channel_send(s, rdpdr_channel); } + void rdpdr_send_name(void) { uint8 magic[4] = "rDNC"; - uint32 hostlen = (strlen(hostname) + 1) * 2; STREAM s; + uint32 hostlen; + + if (NULL == g_rdpdr_clientname) { + g_rdpdr_clientname = hostname; + } + hostlen = (strlen(g_rdpdr_clientname) + 1) * 2; s = channel_init(rdpdr_channel, 16 + hostlen); out_uint8a(s, magic, 4); @@ -40,60 +178,85 @@ out_uint16_le(s, 0x72); out_uint32(s, 0); out_uint32_le(s, hostlen); - rdp_out_unistr(s, hostname, hostlen - 2); + rdp_out_unistr(s, g_rdpdr_clientname, hostlen - 2); s_mark_end(s); channel_send(s, rdpdr_channel); } +/* Returns the size of the payload of the announce packet */ +int +announcedata_size() +{ + int size, i; + PRINTER *printerinfo; + + size = 8; //static announce size + size += g_num_devices * 0x14; + + for (i = 0; i < g_num_devices; i++) + { + if (g_rdpdr_device[i].device_type == DEVICE_TYPE_PRINTER) + { + printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; + printerinfo->bloblen = + printercache_load_blob(printerinfo->printer, &(printerinfo->blob)); + + size += 0x18; + size += 2 * strlen(printerinfo->driver) + 2; + size += 2 * strlen(printerinfo->printer) + 2; + size += printerinfo->bloblen; + } + } + + return size; +} + void rdpdr_send_available(void) { + uint8 magic[4] = "rDAD"; - char *driver = "Digital turbo PrintServer 20"; /* Fairly generic PostScript driver */ - char *printer = "PostScript"; - uint32 driverlen = (strlen(driver) + 1) * 2; - uint32 printerlen = (strlen(printer) + 1) * 2; + uint32 driverlen, printerlen, bloblen; + int i; STREAM s; + PRINTER *printerinfo; - s = channel_init(rdpdr_channel, 8 + 20); + s = channel_init(rdpdr_channel, announcedata_size()); out_uint8a(s, magic, 4); - out_uint32_le(s, 1); /* Number of devices */ + out_uint32_le(s, g_num_devices); -#if 1 - out_uint32_le(s, 0x1); /* Device type 0x1 - serial */ - out_uint32_le(s, 0); /* Handle */ - out_uint8p(s, "COM2", 4); - out_uint8s(s, 4); /* Pad to 8 */ - out_uint32(s, 0); -#endif -#if 0 - out_uint32_le(s, 0x2); /* Device type 0x2 - parallel */ - out_uint32_le(s, 0); - out_uint8p(s, "LPT2", 4); - out_uint8s(s, 4); - out_uint32(s, 0); -#endif -#if 1 - out_uint32_le(s, 0x4); /* Device type 0x4 - printer */ - out_uint32_le(s, 1); - out_uint8p(s, "PRN1", 4); - out_uint8s(s, 4); - out_uint32_le(s, 24 + driverlen + printerlen); /* length of extra info */ - out_uint32_le(s, 2); /* unknown */ - out_uint8s(s, 8); /* unknown */ - out_uint32_le(s, driverlen); /* length of driver name */ - out_uint32_le(s, printerlen); /* length of printer name */ - out_uint32(s, 0); /* unknown */ - rdp_out_unistr(s, driver, driverlen - 2); - rdp_out_unistr(s, printer, printerlen - 2); -#endif -#if 0 - out_uint32_le(s, 0x8); /* Device type 0x8 - disk */ - out_uint32_le(s, 0); - out_uint8p(s, "Z:", 2); - out_uint8s(s, 6); - out_uint32(s, 0); -#endif + for (i = 0; i < g_num_devices; i++) + { + out_uint32_le(s, g_rdpdr_device[i].device_type); + out_uint32_le(s, i); /* RDP Device ID */ + out_uint8p(s, g_rdpdr_device[i].name, 8); + + switch (g_rdpdr_device[i].device_type) + { + case DEVICE_TYPE_PRINTER: + printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; + + driverlen = 2 * strlen(printerinfo->driver) + 2; + printerlen = 2 * strlen(printerinfo->printer) + 2; + bloblen = printerinfo->bloblen; + + out_uint32_le(s, 24 + driverlen + printerlen + bloblen); /* length of extra info */ + out_uint32_le(s, printerinfo->default_printer ? 2 : 0); + out_uint8s(s, 8); /* unknown */ + out_uint32_le(s, driverlen); + out_uint32_le(s, printerlen); + out_uint32_le(s, bloblen); + rdp_out_unistr(s, printerinfo->driver, driverlen - 2); + rdp_out_unistr(s, printerinfo->printer, printerlen - 2); + out_uint8a(s, printerinfo->blob, bloblen); + + if (printerinfo->blob) + xfree(printerinfo->blob); /* Blob is sent twice if reconnecting */ + break; + default: + out_uint32(s, 0); + } + } #if 0 out_uint32_le(s, 0x20); /* Device type 0x20 - smart card */ out_uint32_le(s, 0); @@ -121,20 +284,37 @@ out_uint32_le(s, result); out_uint8p(s, buffer, length); s_mark_end(s); - hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); + /* JIF + hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); */ channel_send(s, rdpdr_channel); } static void rdpdr_process_irp(STREAM s) { - uint32 device, file, id, major, minor; - NTSTATUS status = STATUS_INVALID_DEVICE_REQUEST; - uint32 result = 0, length, request, bytes_in, bytes_out; - uint8 buffer[256]; - uint32 buffer_len = 1; + uint32 result = 0, + length = 0, + desired_access = 0, + request, + file, + info_level, + buffer_len, + id, + major, + minor, + device, + offset, + bytes_in, + bytes_out, + error_mode, + share_mode, disposition, total_timeout, interval_timeout, flags_and_attributes = 0; + + char filename[256]; + uint8 *buffer, *pst_buf; struct stream out; DEVICE_FNS *fns; + BOOL rw_blocking = True; + NTSTATUS status = STATUS_INVALID_DEVICE_REQUEST; in_uint32_le(s, device); in_uint32_le(s, file); @@ -142,16 +322,38 @@ in_uint32_le(s, major); in_uint32_le(s, minor); - memset(buffer, 0, sizeof(buffer)); + buffer_len = 0; + buffer = (uint8 *) xmalloc(1024); + buffer[0] = 0; - /* FIXME: this should probably be a more dynamic mapping */ - switch (device) + switch (g_rdpdr_device[device].device_type) { - case 0: + case DEVICE_TYPE_SERIAL: + fns = &serial_fns; - case 1: + rw_blocking = False; + break; + + case DEVICE_TYPE_PARALLEL: + + fns = ¶llel_fns; + rw_blocking = False; + break; + + case DEVICE_TYPE_PRINTER: + fns = &printer_fns; + break; + + case DEVICE_TYPE_DISK: + + fns = &disk_fns; + rw_blocking = False; + break; + + case DEVICE_TYPE_SCARD: default: + error("IRP for bad device %ld\n", device); return; } @@ -159,42 +361,265 @@ switch (major) { case IRP_MJ_CREATE: - if (fns->create) - status = fns->create(&result); + + in_uint32_be(s, desired_access); + in_uint8s(s, 0x08); // unknown + in_uint32_le(s, error_mode); + in_uint32_le(s, share_mode); + in_uint32_le(s, disposition); + in_uint32_le(s, flags_and_attributes); + in_uint32_le(s, length); + + if (length && (length / 2) < 256) + { + rdp_in_unistr(s, filename, length); + convert_to_unix_filename(filename); + } + else + { + filename[0] = 0; + } + + if (!fns->create) + { + status = STATUS_NOT_SUPPORTED; + break; + } + + status = fns->create(device, desired_access, share_mode, disposition, + flags_and_attributes, filename, &result); + buffer_len = 1; break; case IRP_MJ_CLOSE: - if (fns->close) - status = fns->close(file); + if (!fns->close) + { + status = STATUS_NOT_SUPPORTED; + break; + } + + status = fns->close(file); break; case IRP_MJ_READ: - if (fns->read) + + if (!fns->read) + { + status = STATUS_NOT_SUPPORTED; + break; + } + + in_uint32_le(s, length); + in_uint32_le(s, offset); +#if WITH_DEBUG_RDP5 + DEBUG(("RDPDR IRP Read (length: %d, offset: %d)\n", length, offset)); +#endif + if (!rdpdr_handle_ok(device, file)) + { + status = STATUS_INVALID_HANDLE; + break; + } + + if (rw_blocking) // Complete read immediately { - if (length > sizeof(buffer)) - length = sizeof(buffer); - status = fns->read(file, buffer, length, &result); + buffer = (uint8 *) xrealloc((void *) buffer, length); + if (!buffer) + { + status = STATUS_CANCELLED; + break; + } + status = fns->read(file, buffer, length, offset, &result); buffer_len = result; + break; + } + + // Add request to table + pst_buf = (uint8 *) xmalloc(length); + if (!pst_buf) + { + status = STATUS_CANCELLED; + break; + } + serial_get_timeout(file, length, &total_timeout, &interval_timeout); + if (add_async_iorequest + (device, file, id, major, length, fns, total_timeout, interval_timeout, + pst_buf, offset)) + { + status = STATUS_PENDING; + break; } - break; + status = STATUS_CANCELLED; + break; case IRP_MJ_WRITE: - if (fns->write) - status = fns->write(file, s->p, length, &result); + + buffer_len = 1; + + if (!fns->write) + { + status = STATUS_NOT_SUPPORTED; + break; + } + + in_uint32_le(s, length); + in_uint32_le(s, offset); + in_uint8s(s, 0x18); +#if WITH_DEBUG_RDP5 + DEBUG(("RDPDR IRP Write (length: %d)\n", result)); +#endif + if (!rdpdr_handle_ok(device, file)) + { + status = STATUS_INVALID_HANDLE; + break; + } + + if (rw_blocking) // Complete immediately + { + status = fns->write(file, s->p, length, offset, &result); + break; + } + + // Add to table + pst_buf = (uint8 *) xmalloc(length); + if (!pst_buf) + { + status = STATUS_CANCELLED; + break; + } + + in_uint8a(s, pst_buf, length); + + if (add_async_iorequest + (device, file, id, major, length, fns, 0, 0, pst_buf, offset)) + { + status = STATUS_PENDING; + break; + } + + status = STATUS_CANCELLED; + break; + + case IRP_MJ_QUERY_INFORMATION: + + if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) + { + status = STATUS_INVALID_HANDLE; + break; + } + in_uint32_le(s, info_level); + + out.data = out.p = buffer; + out.size = sizeof(buffer); + status = disk_query_information(file, info_level, &out); + result = buffer_len = out.p - out.data; + + break; + + case IRP_MJ_SET_INFORMATION: + + if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) + { + status = STATUS_INVALID_HANDLE; + break; + } + + in_uint32_le(s, info_level); + + out.data = out.p = buffer; + out.size = sizeof(buffer); + status = disk_set_information(file, info_level, s, &out); + result = buffer_len = out.p - out.data; + break; + + case IRP_MJ_QUERY_VOLUME_INFORMATION: + + if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) + { + status = STATUS_INVALID_HANDLE; + break; + } + + in_uint32_le(s, info_level); + + out.data = out.p = buffer; + out.size = sizeof(buffer); + status = disk_query_volume_information(file, info_level, &out); + result = buffer_len = out.p - out.data; + break; + + case IRP_MJ_DIRECTORY_CONTROL: + + if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) + { + status = STATUS_INVALID_HANDLE; + break; + } + + switch (minor) + { + case IRP_MN_QUERY_DIRECTORY: + + in_uint32_le(s, info_level); + in_uint8s(s, 1); + in_uint32_le(s, length); + in_uint8s(s, 0x17); + if (length && length < 2 * 255) + { + rdp_in_unistr(s, filename, length); + convert_to_unix_filename(filename); + } + else + { + filename[0] = 0; + } + out.data = out.p = buffer; + out.size = sizeof(buffer); + status = disk_query_directory(file, info_level, filename, + &out); + result = buffer_len = out.p - out.data; + if (!buffer_len) + buffer_len++; + break; + + case IRP_MN_NOTIFY_CHANGE_DIRECTORY: + + /* JIF + unimpl("IRP major=0x%x minor=0x%x: IRP_MN_NOTIFY_CHANGE_DIRECTORY\n", major, minor); */ + status = STATUS_PENDING; // Don't send completion packet + break; + + default: + + status = STATUS_INVALID_PARAMETER; + /* JIF + unimpl("IRP major=0x%x minor=0x%x\n", major, minor); */ + } break; case IRP_MJ_DEVICE_CONTROL: - if (fns->device_control) + + if (!fns->device_control) + { + status = STATUS_NOT_SUPPORTED; + break; + } + + in_uint32_le(s, bytes_out); + in_uint32_le(s, bytes_in); + in_uint32_le(s, request); + in_uint8s(s, 0x14); + + buffer = (uint8 *) xrealloc((void *) buffer, bytes_out + 0x14); + if (!buffer) { - in_uint32_le(s, bytes_out); - in_uint32_le(s, bytes_in); - in_uint32_le(s, request); - in_uint8s(s, 0x14); - out.data = out.p = buffer; - out.size = sizeof(buffer); - status = fns->device_control(file, request, s, &out); - result = buffer_len = out.p - out.data; + status = STATUS_CANCELLED; + break; } + + out.data = out.p = buffer; + out.size = sizeof(buffer); + status = fns->device_control(file, request, s, &out); + result = buffer_len = out.p - out.data; break; default: @@ -202,7 +627,53 @@ break; } - rdpdr_send_completion(device, id, status, result, buffer, buffer_len); + if (status != STATUS_PENDING) + { + rdpdr_send_completion(device, id, status, result, buffer, buffer_len); + } + if (buffer) + xfree(buffer); + buffer = NULL; +} + +void +rdpdr_send_clientcapabilty(void) +{ + uint8 magic[4] = "rDPC"; + STREAM s; + + s = channel_init(rdpdr_channel, 0x50); + out_uint8a(s, magic, 4); + out_uint32_le(s, 5); /* count */ + out_uint16_le(s, 1); /* first */ + out_uint16_le(s, 0x28); /* length */ + out_uint32_le(s, 1); + out_uint32_le(s, 2); + out_uint16_le(s, 2); + out_uint16_le(s, 5); + out_uint16_le(s, 1); + out_uint16_le(s, 5); + out_uint16_le(s, 0xFFFF); + out_uint16_le(s, 0); + out_uint32_le(s, 0); + out_uint32_le(s, 3); + out_uint32_le(s, 0); + out_uint32_le(s, 0); + out_uint16_le(s, 2); /* second */ + out_uint16_le(s, 8); /* length */ + out_uint32_le(s, 1); + out_uint16_le(s, 3); /* third */ + out_uint16_le(s, 8); /* length */ + out_uint32_le(s, 1); + out_uint16_le(s, 4); /* fourth */ + out_uint16_le(s, 8); /* length */ + out_uint32_le(s, 1); + out_uint16_le(s, 5); /* fifth */ + out_uint16_le(s, 8); /* length */ + out_uint32_le(s, 1); + + s_mark_end(s); + channel_send(s, rdpdr_channel); } static void @@ -211,8 +682,10 @@ uint32 handle; uint8 *magic; - printf("rdpdr_process\n"); +#if WITH_DEBUG_RDP5 + printf("--- rdpdr_process ---\n"); hexdump(s->p, s->end - s->p); +#endif in_uint8p(s, magic, 4); if ((magic[0] == 'r') && (magic[1] == 'D')) @@ -226,19 +699,35 @@ { rdpdr_send_connect(); rdpdr_send_name(); - rdpdr_send_available(); return; } - else if ((magic[2] == 'C') && (magic[3] == 'C')) + if ((magic[2] == 'C') && (magic[3] == 'C')) { /* connect from server */ + rdpdr_send_clientcapabilty(); + rdpdr_send_available(); return; } - else if ((magic[2] == 'r') && (magic[3] == 'd')) + if ((magic[2] == 'r') && (magic[3] == 'd')) { /* connect to a specific resource */ in_uint32(s, handle); - printf("Server connected to resource %d\n", handle); +#if WITH_DEBUG_RDP5 + DEBUG(("RDPDR: Server connected to resource %d\n", handle)); +#endif + return; + } + if ((magic[2] == 'P') && (magic[3] == 'S')) + { + /* server capability */ + return; + } + } + if ((magic[0] == 'R') && (magic[1] == 'P')) + { + if ((magic[2] == 'C') && (magic[3] == 'P')) + { + printercache_process(s); return; } } @@ -246,10 +735,233 @@ } BOOL -rdpdr_init(void) +rdpdr_init() { - rdpdr_channel = - channel_register("rdpdr", CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_COMPRESS_RDP, - rdpdr_process); + if (g_num_devices > 0) + { + rdpdr_channel = + channel_register("rdpdr", + CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_COMPRESS_RDP, + rdpdr_process); + } + return (rdpdr_channel != NULL); } + +/* Add file descriptors of pending io request to select() */ +void +rdpdr_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv, BOOL * timeout) +{ + uint32 select_timeout = 0; // Timeout value to be used for select() (in millisecons). + struct async_iorequest *iorq; + + iorq = g_iorequest; + while (iorq != NULL) + { + if (iorq->fd != 0) + { + switch (iorq->major) + { + case IRP_MJ_READ: + + FD_SET(iorq->fd, rfds); + + // Check if io request timeout is smaller than current (but not 0). + if (iorq->timeout + && (select_timeout == 0 + || iorq->timeout < select_timeout)) + { + // Set new timeout + select_timeout = iorq->timeout; + g_min_timeout_fd = iorq->fd; /* Remember fd */ + tv->tv_sec = select_timeout / 1000; + tv->tv_usec = (select_timeout % 1000) * 1000; + *timeout = True; + } + break; + + case IRP_MJ_WRITE: + FD_SET(iorq->fd, wfds); + break; + + } + *n = MAX(*n, iorq->fd); + } + + iorq = iorq->next; + } +} + +struct async_iorequest * +rdpdr_remove_iorequest(struct async_iorequest *prev, struct async_iorequest *iorq) +{ + if (!iorq) + return NULL; + + if (iorq->buffer) + xfree(iorq->buffer); + if (prev) + { + prev->next = iorq->next; + xfree(iorq); + iorq = prev->next; + } + else + { + // Even if NULL + g_iorequest = iorq->next; + xfree(iorq); + iorq = NULL; + } + return iorq; +} + +/* Check if select() returned with one of the rdpdr file descriptors, and complete io if it did */ +void +rdpdr_check_fds(fd_set * rfds, fd_set * wfds, BOOL timed_out) +{ + NTSTATUS status; + uint32 result = 0; + DEVICE_FNS *fns; + struct async_iorequest *iorq; + struct async_iorequest *prev; + uint32 req_size = 0; + + if (timed_out) + { + rdpdr_abort_io(g_min_timeout_fd, 0, STATUS_TIMEOUT); + return; + } + + iorq = g_iorequest; + prev = NULL; + while (iorq != NULL) + { + if (iorq->fd != 0) + { + switch (iorq->major) + { + case IRP_MJ_READ: + if (FD_ISSET(iorq->fd, rfds)) + { + /* Read the data */ + fns = iorq->fns; + + req_size = + (iorq->length - iorq->partial_len) > + 8192 ? 8192 : (iorq->length - + iorq->partial_len); + /* never read larger chunks than 8k - chances are that it will block */ + status = fns->read(iorq->fd, + iorq->buffer + iorq->partial_len, + req_size, iorq->offset, &result); + + if (result > 0) + { + iorq->partial_len += result; + iorq->offset += result; + } +#if WITH_DEBUG_RDP5 + DEBUG(("RDPDR: %d bytes of data read\n", result)); +#endif + /* only delete link if all data has been transfered */ + /* or if result was 0 and status success - EOF */ + if ((iorq->partial_len == iorq->length) || + (result == 0)) + { +#if WITH_DEBUG_RDP5 + DEBUG(("RDPDR: AIO total %u bytes read of %u\n", iorq->partial_len, iorq->length)); +#endif + rdpdr_send_completion(iorq->device, + iorq->id, status, + iorq->partial_len, + iorq->buffer, + iorq->partial_len); + iorq = rdpdr_remove_iorequest(prev, iorq); + } + } + break; + case IRP_MJ_WRITE: + if (FD_ISSET(iorq->fd, wfds)) + { + /* Write data. */ + fns = iorq->fns; + + req_size = + (iorq->length - iorq->partial_len) > + 8192 ? 8192 : (iorq->length - + iorq->partial_len); + + /* never write larger chunks than 8k - chances are that it will block */ + status = fns->write(iorq->fd, + iorq->buffer + + iorq->partial_len, req_size, + iorq->offset, &result); + + if (result > 0) + { + iorq->partial_len += result; + iorq->offset += result; + } + +#if WITH_DEBUG_RDP5 + DEBUG(("RDPDR: %d bytes of data written\n", + result)); +#endif + /* only delete link if all data has been transfered */ + /* or we couldn't write */ + if ((iorq->partial_len == iorq->length) + || (result == 0)) + { +#if WITH_DEBUG_RDP5 + DEBUG(("RDPDR: AIO total %u bytes written of %u\n", iorq->partial_len, iorq->length)); +#endif + rdpdr_send_completion(iorq->device, + iorq->id, status, + iorq->partial_len, + (uint8 *) "", 1); + + iorq = rdpdr_remove_iorequest(prev, iorq); + } + } + break; + } + + } + prev = iorq; + if (iorq) + iorq = iorq->next; + } + +} + +/* Abort a pending io request for a given handle and major */ +BOOL +rdpdr_abort_io(uint32 fd, uint32 major, NTSTATUS status) +{ + uint32 result; + struct async_iorequest *iorq; + struct async_iorequest *prev; + + iorq = g_iorequest; + prev = NULL; + while (iorq != NULL) + { + // Only remove from table when major is not set, or when correct major is supplied. + // Abort read should not abort a write io request. + if ((iorq->fd == fd) && (major == 0 || iorq->major == major)) + { + result = 0; + rdpdr_send_completion(iorq->device, iorq->id, status, result, (uint8 *) "", + 1); + + iorq = rdpdr_remove_iorequest(prev, iorq); + return True; + } + + prev = iorq; + iorq = iorq->next; + } + + return False; +}