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/*
* HTTP server driver
*
* Copyright 2019 Zebediah Figura
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "wine/http.h"
#include "winternl.h"
#include "ddk/wdm.h"
#include "wine/debug.h"
#include "wine/heap.h"
#include "wine/list.h"
static HANDLE directory_obj;
static DEVICE_OBJECT *device_obj;
WINE_DEFAULT_DEBUG_CHANNEL(http);
/* We have to return the HTTP_REQUEST structure to userspace exactly as it will
* be consumed; httpapi has no opportunity to massage it. Since it contains
* pointers, this is somewhat nontrivial. */
struct http_unknown_header_32
{
USHORT NameLength;
USHORT RawValueLength;
ULONG pName; /* char string */
ULONG pRawValue; /* char string */
};
struct http_data_chunk_32
{
HTTP_DATA_CHUNK_TYPE DataChunkType;
union
{
struct
{
ULONG pBuffer; /* char string */
ULONG BufferLength;
} FromMemory;
/* for the struct size */
struct
{
ULARGE_INTEGER StartingOffset;
ULARGE_INTEGER Length;
HANDLE FileHandle;
} FromFileHandle;
};
};
struct http_request_32
{
ULONG Flags;
HTTP_CONNECTION_ID ConnectionId;
HTTP_REQUEST_ID RequestId;
HTTP_URL_CONTEXT UrlContext;
HTTP_VERSION Version;
HTTP_VERB Verb;
USHORT UnknownVerbLength;
USHORT RawUrlLength;
ULONG pUnknownVerb; /* char string */
ULONG pRawUrl; /* char string */
struct
{
USHORT FullUrlLength;
USHORT HostLength;
USHORT AbsPathLength;
USHORT QueryStringLength;
ULONG pFullUrl; /* WCHAR string */
ULONG pHost; /* pointer to above */
ULONG pAbsPath; /* pointer to above */
ULONG pQueryString; /* pointer to above */
} CookedUrl;
struct
{
ULONG pRemoteAddress; /* SOCKADDR */
ULONG pLocalAddress; /* SOCKADDR */
} Address;
struct
{
USHORT UnknownHeaderCount;
ULONG pUnknownHeaders; /* struct http_unknown_header_32 */
USHORT TrailerCount;
ULONG pTrailers; /* NULL */
struct
{
USHORT RawValueLength;
ULONG pRawValue; /* char string */
} KnownHeaders[HttpHeaderRequestMaximum];
} Headers;
ULONGLONG BytesReceived;
USHORT EntityChunkCount;
ULONG pEntityChunks; /* struct http_data_chunk_32 */
HTTP_RAW_CONNECTION_ID RawConnectionId;
ULONG pSslInfo; /* NULL (FIXME) */
USHORT RequestInfoCount;
ULONG pRequestInfo; /* NULL (FIXME) */
};
struct http_unknown_header_64
{
USHORT NameLength;
USHORT RawValueLength;
ULONGLONG pName; /* char string */
ULONGLONG pRawValue; /* char string */
};
struct http_data_chunk_64
{
HTTP_DATA_CHUNK_TYPE DataChunkType;
union
{
struct
{
ULONGLONG pBuffer; /* char string */
ULONG BufferLength;
} FromMemory;
/* for the struct size */
struct
{
ULARGE_INTEGER StartingOffset;
ULARGE_INTEGER Length;
HANDLE FileHandle;
} FromFileHandle;
};
};
struct http_request_64
{
ULONG Flags;
HTTP_CONNECTION_ID ConnectionId;
HTTP_REQUEST_ID RequestId;
HTTP_URL_CONTEXT UrlContext;
HTTP_VERSION Version;
HTTP_VERB Verb;
USHORT UnknownVerbLength;
USHORT RawUrlLength;
ULONGLONG pUnknownVerb; /* char string */
ULONGLONG pRawUrl; /* char string */
struct
{
USHORT FullUrlLength;
USHORT HostLength;
USHORT AbsPathLength;
USHORT QueryStringLength;
ULONGLONG pFullUrl; /* WCHAR string */
ULONGLONG pHost; /* pointer to above */
ULONGLONG pAbsPath; /* pointer to above */
ULONGLONG pQueryString; /* pointer to above */
} CookedUrl;
struct
{
ULONGLONG pRemoteAddress; /* SOCKADDR */
ULONGLONG pLocalAddress; /* SOCKADDR */
} Address;
struct
{
USHORT UnknownHeaderCount;
ULONGLONG pUnknownHeaders; /* struct http_unknown_header_32 */
USHORT TrailerCount;
ULONGLONG pTrailers; /* NULL */
struct
{
USHORT RawValueLength;
ULONGLONG pRawValue; /* char string */
} KnownHeaders[HttpHeaderRequestMaximum];
} Headers;
ULONGLONG BytesReceived;
USHORT EntityChunkCount;
ULONGLONG pEntityChunks; /* struct http_data_chunk_32 */
HTTP_RAW_CONNECTION_ID RawConnectionId;
ULONGLONG pSslInfo; /* NULL (FIXME) */
USHORT RequestInfoCount;
ULONGLONG pRequestInfo; /* NULL (FIXME) */
};
#define DECLARE_CRITICAL_SECTION(cs) \
static CRITICAL_SECTION cs; \
static CRITICAL_SECTION_DEBUG cs##_debug = \
{ 0, 0, &cs, { &cs##_debug.ProcessLocksList, &cs##_debug.ProcessLocksList }, \
0, 0, { (DWORD_PTR)(__FILE__ ": " # cs) }}; \
static CRITICAL_SECTION cs = { &cs##_debug, -1, 0, 0, 0, 0 };
DECLARE_CRITICAL_SECTION(http_cs);
static HANDLE request_thread, request_event;
static BOOL thread_stop;
static HTTP_REQUEST_ID req_id_counter;
struct connection
{
struct list entry; /* in "connections" below */
SOCKET socket;
char *buffer;
unsigned int len, size;
/* If there is a request fully received and waiting to be read, the
* "available" parameter will be TRUE. Either there is no queue matching
* the URL of this request yet ("queue" is NULL), there is a queue but no
* IRPs have arrived for this request yet ("queue" is non-NULL and "req_id"
* is HTTP_NULL_ID), or an IRP has arrived but did not provide a large
* enough buffer to read the whole request ("queue" is non-NULL and
* "req_id" is not HTTP_NULL_ID).
*
* If "available" is FALSE, either we are waiting for a new request
* ("req_id" is HTTP_NULL_ID), or we are waiting for the user to send a
* response ("req_id" is not HTTP_NULL_ID). */
BOOL available;
struct request_queue *queue;
HTTP_REQUEST_ID req_id;
/* Things we already parsed out of the request header in parse_request().
* These are valid only if "available" is TRUE. */
unsigned int req_len;
HTTP_VERB verb;
HTTP_VERSION version;
const char *url, *host;
ULONG unk_verb_len, url_len, content_len;
};
static struct list connections = LIST_INIT(connections);
struct request_queue
{
struct list entry;
LIST_ENTRY irp_queue;
HTTP_URL_CONTEXT context;
char *url;
SOCKET socket;
};
static struct list request_queues = LIST_INIT(request_queues);
static void accept_connection(SOCKET socket)
{
struct connection *conn;
ULONG true = 1;
SOCKET peer;
if ((peer = accept(socket, NULL, NULL)) == INVALID_SOCKET)
return;
if (!(conn = heap_alloc_zero(sizeof(*conn))))
{
ERR("Failed to allocate memory.\n");
shutdown(peer, SD_BOTH);
closesocket(peer);
return;
}
if (!(conn->buffer = heap_alloc(8192)))
{
ERR("Failed to allocate buffer memory.\n");
heap_free(conn);
shutdown(peer, SD_BOTH);
closesocket(peer);
return;
}
conn->size = 8192;
WSAEventSelect(peer, request_event, FD_READ | FD_CLOSE);
ioctlsocket(peer, FIONBIO, &true);
conn->socket = peer;
list_add_head(&connections, &conn->entry);
}
static void close_connection(struct connection *conn)
{
heap_free(conn->buffer);
shutdown(conn->socket, SD_BOTH);
closesocket(conn->socket);
list_remove(&conn->entry);
heap_free(conn);
}
static HTTP_VERB parse_verb(const char *verb, int len)
{
static const char *const verbs[] =
{
"OPTIONS",
"GET",
"HEAD",
"POST",
"PUT",
"DELETE",
"TRACE",
"CONNECT",
"TRACK",
"MOVE",
"COPY",
"PROPFIND",
"PROPPATCH",
"MKCOL",
"LOCK",
"UNLOCK",
"SEARCH",
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(verbs); ++i)
{
if (!strncmp(verb, verbs[i], len))
return HttpVerbOPTIONS + i;
}
return HttpVerbUnknown;
}
/* Return the length of a token, as defined in RFC 2616 section 2.2. */
static int parse_token(const char *str, const char *end)
{
const char *p;
for (p = str; !end || p < end; ++p)
{
if (!isgraph(*p) || strchr("()<>@,;:\\\"/[]?={}", *p))
break;
}
return p - str;
}
static HTTP_HEADER_ID parse_header_name(const char *header, int len)
{
static const char *const headers[] =
{
"Cache-Control",
"Connection",
"Date",
"Keep-Alive",
"Pragma",
"Trailer",
"Transfer-Encoding",
"Upgrade",
"Via",
"Warning",
"Allow",
"Content-Length",
"Content-Type",
"Content-Encoding",
"Content-Language",
"Content-Location",
"Content-MD5",
"Content-Range",
"Expires",
"Last-Modified",
"Accept",
"Accept-Charset",
"Accept-Encoding",
"Accept-Language",
"Authorization",
"Cookie",
"Expect",
"From",
"Host",
"If-Match",
"If-Modified-Since",
"If-None-Match",
"If-Range",
"If-Unmodified-Since",
"Max-Forwards",
"Proxy-Authorization",
"Referer",
"Range",
"TE",
"Translate",
"User-Agent",
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(headers); ++i)
{
if (!strncmp(header, headers[i], len))
return i;
}
return HttpHeaderRequestMaximum;
}
static void parse_header(const char *name, int *name_len, const char **value, int *value_len)
{
const char *p = name;
*name_len = parse_token(name, NULL);
p += *name_len;
while (*p == ' ' || *p == '\t') ++p;
++p; /* skip colon */
while (*p == ' ' || *p == '\t') ++p;
*value = p;
while (isprint(*p) || *p == '\t') ++p;
while (isspace(*p)) --p; /* strip trailing LWS */
*value_len = p - *value + 1;
}
static NTSTATUS complete_irp(struct connection *conn, IRP *irp)
{
static const WCHAR httpW[] = {'h','t','t','p',':','/','/'};
const struct http_receive_request_params params
= *(struct http_receive_request_params *)irp->AssociatedIrp.SystemBuffer;
DWORD irp_size = (params.bits == 32) ? sizeof(struct http_request_32) : sizeof(struct http_request_64);
IO_STACK_LOCATION *stack = IoGetCurrentIrpStackLocation(irp);
const DWORD output_len = stack->Parameters.DeviceIoControl.OutputBufferLength;
ULONG cooked_len, host_len, abs_path_len, query_len, chunk_len = 0, offset;
const char *p, *name, *value, *host, *abs_path, *query;
USHORT unk_headers_count = 0, unk_header_idx;
int name_len, value_len, len;
struct sockaddr_in addr;
TRACE("Completing IRP %p.\n", irp);
if (!conn->req_id)
conn->req_id = ++req_id_counter;
/* First calculate the total buffer size needed for this IRP. */
if (conn->unk_verb_len)
irp_size += conn->unk_verb_len + 1;
irp_size += conn->url_len + 1;
/* cooked URL */
if (conn->url[0] == '/')
{
p = host = conn->host;
while (isgraph(*p)) ++p;
host_len = p - conn->host;
abs_path = conn->url;
abs_path_len = conn->url_len;
}
else
{
host = conn->url + 7;
abs_path = strchr(host, '/');
host_len = abs_path - host;
abs_path_len = (conn->url + conn->url_len) - abs_path;
}
if ((query = memchr(abs_path, '?', abs_path_len)))
{
query_len = (abs_path + abs_path_len) - query;
abs_path_len = query - abs_path;
}
else
query_len = 0;
cooked_len = (7 /* scheme */ + host_len + abs_path_len + query_len) * sizeof(WCHAR);
irp_size += cooked_len + sizeof(WCHAR);
/* addresses */
irp_size += 2 * sizeof(addr);
/* headers */
p = strstr(conn->buffer, "\r\n") + 2;
while (memcmp(p, "\r\n", 2))
{
name = p;
parse_header(name, &name_len, &value, &value_len);
if (parse_header_name(name, name_len) == HttpHeaderRequestMaximum)
{
irp_size += name_len + 1;
++unk_headers_count;
}
irp_size += value_len + 1;
p = strstr(p, "\r\n") + 2;
}
p += 2;
if (params.bits == 32)
irp_size += unk_headers_count * sizeof(struct http_unknown_header_32);
else
irp_size += unk_headers_count * sizeof(struct http_unknown_header_64);
TRACE("Need %u bytes, have %u.\n", irp_size, output_len);
irp->IoStatus.Information = irp_size;
memset(irp->AssociatedIrp.SystemBuffer, 0, output_len);
if (output_len < irp_size)
{
if (params.bits == 32)
{
struct http_request_32 *req = irp->AssociatedIrp.SystemBuffer;
req->ConnectionId = (ULONG_PTR)conn;
req->RequestId = conn->req_id;
}
else
{
struct http_request_64 *req = irp->AssociatedIrp.SystemBuffer;
req->ConnectionId = (ULONG_PTR)conn;
req->RequestId = conn->req_id;
}
return STATUS_BUFFER_OVERFLOW;
}
if (params.bits == 32)
{
struct http_request_32 *req = irp->AssociatedIrp.SystemBuffer;
struct http_unknown_header_32 *unk_headers = NULL;
char *buffer = irp->AssociatedIrp.SystemBuffer;
struct http_data_chunk_32 *chunk = NULL;
offset = sizeof(*req);
req->ConnectionId = (ULONG_PTR)conn;
req->RequestId = conn->req_id;
req->UrlContext = conn->queue->context;
req->Version = conn->version;
req->Verb = conn->verb;
req->UnknownVerbLength = conn->unk_verb_len;
req->RawUrlLength = conn->url_len;
if (conn->unk_verb_len)
{
req->pUnknownVerb = params.addr + offset;
memcpy(buffer + offset, conn->buffer, conn->unk_verb_len);
offset += conn->unk_verb_len;
buffer[offset++] = 0;
}
req->pRawUrl = params.addr + offset;
memcpy(buffer + offset, conn->url, conn->url_len);
offset += conn->url_len;
buffer[offset++] = 0;
req->CookedUrl.FullUrlLength = cooked_len;
req->CookedUrl.HostLength = host_len * sizeof(WCHAR);
req->CookedUrl.AbsPathLength = abs_path_len * sizeof(WCHAR);
req->CookedUrl.QueryStringLength = query_len * sizeof(WCHAR);
req->CookedUrl.pFullUrl = params.addr + offset;
req->CookedUrl.pHost = req->CookedUrl.pFullUrl + 7 * sizeof(WCHAR);
req->CookedUrl.pAbsPath = req->CookedUrl.pHost + host_len * sizeof(WCHAR);
if (query)
req->CookedUrl.pQueryString = req->CookedUrl.pAbsPath + abs_path_len * sizeof(WCHAR);
memcpy(buffer + offset, httpW, sizeof(httpW));
offset += 7 * sizeof(WCHAR);
MultiByteToWideChar(CP_ACP, 0, host, host_len, (WCHAR *)(buffer + offset), host_len * sizeof(WCHAR));
offset += host_len * sizeof(WCHAR);
MultiByteToWideChar(CP_ACP, 0, abs_path, abs_path_len + query_len,
(WCHAR *)(buffer + offset), (abs_path_len + query_len) * sizeof(WCHAR));
offset += (abs_path_len + query_len) * sizeof(WCHAR);
buffer[offset++] = 0;
buffer[offset++] = 0;
req->Address.pRemoteAddress = params.addr + offset;
len = sizeof(addr);
getpeername(conn->socket, (struct sockaddr *)&addr, &len);
memcpy(buffer + offset, &addr, sizeof(addr));
offset += sizeof(addr);
req->Address.pLocalAddress = params.addr + offset;
len = sizeof(addr);
getsockname(conn->socket, (struct sockaddr *)&addr, &len);
memcpy(buffer + offset, &addr, sizeof(addr));
offset += sizeof(addr);
req->Headers.UnknownHeaderCount = unk_headers_count;
if (unk_headers_count)
{
req->Headers.pUnknownHeaders = params.addr + offset;
unk_headers = (struct http_unknown_header_32 *)(buffer + offset);
offset += unk_headers_count * sizeof(*unk_headers);
}
unk_header_idx = 0;
p = strstr(conn->buffer, "\r\n") + 2;
while (memcmp(p, "\r\n", 2))
{
HTTP_HEADER_ID id;
name = p;
parse_header(name, &name_len, &value, &value_len);
if ((id = parse_header_name(name, name_len)) == HttpHeaderRequestMaximum)
{
unk_headers[unk_header_idx].NameLength = name_len;
unk_headers[unk_header_idx].RawValueLength = value_len;
unk_headers[unk_header_idx].pName = params.addr + offset;
memcpy(buffer + offset, name, name_len);
offset += name_len;
buffer[offset++] = 0;
unk_headers[unk_header_idx].pRawValue = params.addr + offset;
memcpy(buffer + offset, value, value_len);
offset += value_len;
buffer[offset++] = 0;
++unk_header_idx;
}
else
{
req->Headers.KnownHeaders[id].RawValueLength = value_len;
req->Headers.KnownHeaders[id].pRawValue = params.addr + offset;
memcpy(buffer + offset, value, value_len);
offset += value_len;
buffer[offset++] = 0;
}
p = strstr(p, "\r\n") + 2;
}
p += 2;
if (irp_size + sizeof(*chunk) < output_len && (params.flags & HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY))
chunk_len = min(conn->content_len, output_len - (irp_size + sizeof(*chunk)));
if (chunk_len)
{
req->EntityChunkCount = 1;
req->pEntityChunks = params.addr + offset;
chunk = (struct http_data_chunk_32 *)(buffer + offset);
offset += sizeof(*chunk);
chunk->DataChunkType = HttpDataChunkFromMemory;
chunk->FromMemory.BufferLength = chunk_len;
chunk->FromMemory.pBuffer = params.addr + offset;
memcpy(buffer + offset, p, chunk_len);
offset += chunk_len;
irp->IoStatus.Information = irp_size + sizeof(*chunk) + chunk_len;
}
if (chunk_len < conn->content_len)
req->Flags |= HTTP_REQUEST_FLAG_MORE_ENTITY_BODY_EXISTS;
req->BytesReceived = conn->req_len;
}
else
{
struct http_request_64 *req = irp->AssociatedIrp.SystemBuffer;
struct http_unknown_header_64 *unk_headers = NULL;
char *buffer = irp->AssociatedIrp.SystemBuffer;
struct http_data_chunk_64 *chunk = NULL;
offset = sizeof(*req);
req->ConnectionId = (ULONG_PTR)conn;
req->RequestId = conn->req_id;
req->UrlContext = conn->queue->context;
req->Version = conn->version;
req->Verb = conn->verb;
req->UnknownVerbLength = conn->unk_verb_len;
req->RawUrlLength = conn->url_len;
if (conn->unk_verb_len)
{
req->pUnknownVerb = params.addr + offset;
memcpy(buffer + offset, conn->buffer, conn->unk_verb_len);
offset += conn->unk_verb_len;
buffer[offset++] = 0;
}
req->pRawUrl = params.addr + offset;
memcpy(buffer + offset, conn->url, conn->url_len);
offset += conn->url_len;
buffer[offset++] = 0;
req->CookedUrl.FullUrlLength = cooked_len;
req->CookedUrl.HostLength = host_len * sizeof(WCHAR);
req->CookedUrl.AbsPathLength = abs_path_len * sizeof(WCHAR);
req->CookedUrl.QueryStringLength = query_len * sizeof(WCHAR);
req->CookedUrl.pFullUrl = params.addr + offset;
req->CookedUrl.pHost = req->CookedUrl.pFullUrl + 7 * sizeof(WCHAR);
req->CookedUrl.pAbsPath = req->CookedUrl.pHost + host_len * sizeof(WCHAR);
if (query)
req->CookedUrl.pQueryString = req->CookedUrl.pAbsPath + abs_path_len * sizeof(WCHAR);
memcpy(buffer + offset, httpW, sizeof(httpW));
offset += 7 * sizeof(WCHAR);
MultiByteToWideChar(CP_ACP, 0, host, host_len, (WCHAR *)(buffer + offset), host_len * sizeof(WCHAR));
offset += host_len * sizeof(WCHAR);
MultiByteToWideChar(CP_ACP, 0, abs_path, abs_path_len + query_len,
(WCHAR *)(buffer + offset), (abs_path_len + query_len) * sizeof(WCHAR));
offset += (abs_path_len + query_len) * sizeof(WCHAR);
buffer[offset++] = 0;
buffer[offset++] = 0;
req->Address.pRemoteAddress = params.addr + offset;
len = sizeof(addr);
getpeername(conn->socket, (struct sockaddr *)&addr, &len);
memcpy(buffer + offset, &addr, sizeof(addr));
offset += sizeof(addr);
req->Address.pLocalAddress = params.addr + offset;
len = sizeof(addr);
getsockname(conn->socket, (struct sockaddr *)&addr, &len);
memcpy(buffer + offset, &addr, sizeof(addr));
offset += sizeof(addr);
req->Headers.UnknownHeaderCount = unk_headers_count;
if (unk_headers_count)
{
req->Headers.pUnknownHeaders = params.addr + offset;
unk_headers = (struct http_unknown_header_64 *)(buffer + offset);
offset += unk_headers_count * sizeof(*unk_headers);
}
unk_header_idx = 0;
p = strstr(conn->buffer, "\r\n") + 2;
while (memcmp(p, "\r\n", 2))
{
HTTP_HEADER_ID id;
name = p;
parse_header(name, &name_len, &value, &value_len);
if ((id = parse_header_name(name, name_len)) == HttpHeaderRequestMaximum)
{
unk_headers[unk_header_idx].NameLength = name_len;
unk_headers[unk_header_idx].RawValueLength = value_len;
unk_headers[unk_header_idx].pName = params.addr + offset;
memcpy(buffer + offset, name, name_len);
offset += name_len;
buffer[offset++] = 0;
unk_headers[unk_header_idx].pRawValue = params.addr + offset;
memcpy(buffer + offset, value, value_len);
offset += value_len;
buffer[offset++] = 0;
++unk_header_idx;
}
else
{
req->Headers.KnownHeaders[id].RawValueLength = value_len;
req->Headers.KnownHeaders[id].pRawValue = params.addr + offset;
memcpy(buffer + offset, value, value_len);
offset += value_len;
buffer[offset++] = 0;
}
p = strstr(p, "\r\n") + 2;
}
p += 2;
if (irp_size + sizeof(*chunk) < output_len && (params.flags & HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY))
chunk_len = min(conn->content_len, output_len - (irp_size + sizeof(*chunk)));
if (chunk_len)
{
req->EntityChunkCount = 1;
req->pEntityChunks = params.addr + offset;
chunk = (struct http_data_chunk_64 *)(buffer + offset);
offset += sizeof(*chunk);
chunk->DataChunkType = HttpDataChunkFromMemory;
chunk->FromMemory.BufferLength = chunk_len;
chunk->FromMemory.pBuffer = params.addr + offset;
memcpy(buffer + offset, p, chunk_len);
offset += chunk_len;
irp->IoStatus.Information = irp_size + sizeof(*chunk) + chunk_len;
}
if (chunk_len < conn->content_len)
req->Flags |= HTTP_REQUEST_FLAG_MORE_ENTITY_BODY_EXISTS;
req->BytesReceived = conn->req_len;
}
assert(offset == irp->IoStatus.Information);
conn->available = FALSE;
memmove(conn->buffer, conn->buffer + conn->req_len, conn->len - conn->req_len);
conn->len -= conn->req_len;
return STATUS_SUCCESS;
}
/* Complete an IOCTL_HTTP_RECEIVE_REQUEST IRP if there is one to complete. */
static void try_complete_irp(struct connection *conn)
{
LIST_ENTRY *entry;
if (conn->queue && (entry = RemoveHeadList(&conn->queue->irp_queue)) != &conn->queue->irp_queue)
{
IRP *irp = CONTAINING_RECORD(entry, IRP, Tail.Overlay.ListEntry);
irp->IoStatus.Status = complete_irp(conn, irp);
IoCompleteRequest(irp, IO_NO_INCREMENT);
}
}
/* Return 1 if str matches expect, 0 if str is incomplete, -1 if they don't match. */
static int compare_exact(const char *str, const char *expect, const char *end)
{
while (*expect)
{
if (str >= end) return 0;
if (*str++ != *expect++) return -1;
}
return 1;
}
static int parse_number(const char *str, const char **endptr, const char *end)
{
int n = 0;
while (str < end && isdigit(*str))
n = n * 10 + (*str++ - '0');
*endptr = str;
return n;
}
static BOOL host_matches(const struct connection *conn, const struct request_queue *queue)
{
const char *conn_host = (conn->url[0] == '/') ? conn->host : conn->url + 7;
return !memicmp(queue->url + 7, conn_host, strlen(queue->url) - 8 /* strip final slash */);
}
/* Upon receiving a request, parse it to ensure that it is a valid HTTP request,
* and mark down some information that we will use later. Returns 1 if we parsed
* a complete request, 0 if incomplete, -1 if invalid. */
static int parse_request(struct connection *conn)
{
const char *const req = conn->buffer, *const end = conn->buffer + conn->len;
struct request_queue *queue;
const char *p = req, *q;
int len, ret;
if (!conn->len) return 0;
TRACE("%s\n", wine_dbgstr_an(conn->buffer, conn->len));
len = parse_token(p, end);
if (p + len >= end) return 0;
if (!len || p[len] != ' ') return -1;
/* verb */
if ((conn->verb = parse_verb(p, len)) == HttpVerbUnknown)
conn->unk_verb_len = len;
p += len + 1;
TRACE("Got verb %u (%s).\n", conn->verb, debugstr_an(req, len));
/* URL */
conn->url = p;
while (p < end && isgraph(*p)) ++p;
conn->url_len = p - conn->url;
if (p >= end) return 0;
if (!conn->url_len) return -1;
TRACE("Got URI %s.\n", debugstr_an(conn->url, conn->url_len));
/* version */
if ((ret = compare_exact(p, " HTTP/", end)) <= 0) return ret;
p += 6;
conn->version.MajorVersion = parse_number(p, &q, end);
if (q >= end) return 0;
if (q == p || *q != '.') return -1;
p = q + 1;
if (p >= end) return 0;
conn->version.MinorVersion = parse_number(p, &q, end);
if (q >= end) return 0;
if (q == p) return -1;
p = q;
if ((ret = compare_exact(p, "\r\n", end)) <= 0) return ret;
p += 2;
TRACE("Got version %hu.%hu.\n", conn->version.MajorVersion, conn->version.MinorVersion);
/* headers */
conn->host = NULL;
conn->content_len = 0;
for (;;)
{
const char *name = p;
if (!(ret = compare_exact(p, "\r\n", end))) return 0;
else if (ret > 0) break;
len = parse_token(p, end);
if (p + len >= end) return 0;
if (!len) return -1;
p += len;
while (p < end && (*p == ' ' || *p == '\t')) ++p;
if (p >= end) return 0;
if (*p != ':') return -1;
++p;
while (p < end && (*p == ' ' || *p == '\t')) ++p;
TRACE("Got %s header.\n", debugstr_an(name, len));
if (!strncmp(name, "Host", len))
conn->host = p;
else if (!strncmp(name, "Content-Length", len))
{
conn->content_len = parse_number(p, &q, end);
if (q >= end) return 0;
if (q == p) return -1;
}
else if (!strncmp(name, "Transfer-Encoding", len))
FIXME("Unhandled Transfer-Encoding header.\n");
while (p < end && (isprint(*p) || *p == '\t')) ++p;
if ((ret = compare_exact(p, "\r\n", end)) <= 0) return ret;
p += 2;
}
p += 2;
if (conn->url[0] == '/' && !conn->host) return -1;
if (end - p < conn->content_len) return 0;
conn->req_len = (p - req) + conn->content_len;
TRACE("Received a full request, length %u bytes.\n", conn->req_len);
conn->queue = NULL;
/* Find a queue which can receive this request. */
LIST_FOR_EACH_ENTRY(queue, &request_queues, struct request_queue, entry)
{
if (host_matches(conn, queue))
{
TRACE("Assigning request to queue %p.\n", queue);
conn->queue = queue;
break;
}
}
/* Stop selecting on incoming data until a response is queued. */
WSAEventSelect(conn->socket, request_event, FD_CLOSE);
conn->available = TRUE;
try_complete_irp(conn);
return 1;
}
static void format_date(char *buffer)
{
static const char day_names[7][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
static const char month_names[12][4] =
{"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
SYSTEMTIME date;
GetSystemTime(&date);
sprintf(buffer + strlen(buffer), "Date: %s, %02u %s %u %02u:%02u:%02u GMT\r\n",
day_names[date.wDayOfWeek], date.wDay, month_names[date.wMonth - 1],
date.wYear, date.wHour, date.wMinute, date.wSecond);
}
/* Send a 400 Bad Request response. */
static void send_400(struct connection *conn)
{
static const char response_header[] = "HTTP/1.1 400 Bad Request\r\n";
static const char response_body[] =
"Content-Type: text/html; charset=utf-8\r\n"
"Content-Language: en\r\n"
"Connection: close\r\n";
char buffer[sizeof(response_header) + sizeof(response_body) + 37];
strcpy(buffer, response_header);
format_date(buffer + strlen(buffer));
strcat(buffer, response_body);
if (send(conn->socket, buffer, strlen(buffer), 0) < 0)
ERR("Failed to send 400 response, error %u.\n", WSAGetLastError());
}
static void receive_data(struct connection *conn)
{
int len, ret;
/* We might be waiting for an IRP, but always call recv() anyway, since we
* might have been woken up by the socket closing. */
if ((len = recv(conn->socket, conn->buffer + conn->len, conn->size - conn->len, 0)) <= 0)
{
if (WSAGetLastError() == WSAEWOULDBLOCK)
return; /* nothing to receive */
else if (!len)
TRACE("Connection was shut down by peer.\n");
else
ERR("Got error %u; shutting down connection.\n", WSAGetLastError());
close_connection(conn);
return;
}
conn->len += len;
if (conn->available)
return; /* waiting for an HttpReceiveHttpRequest() call */
if (conn->req_id != HTTP_NULL_ID)
return; /* waiting for an HttpSendHttpResponse() call */
TRACE("Received %u bytes of data.\n", len);
if (!(ret = parse_request(conn)))
{
ULONG available;
ioctlsocket(conn->socket, FIONREAD, &available);
if (available)
{
TRACE("%u more bytes of data available, trying with larger buffer.\n", available);
if (!(conn->buffer = heap_realloc(conn->buffer, conn->len + available)))
{
ERR("Failed to allocate %u bytes of memory.\n", conn->len + available);
close_connection(conn);
return;
}
conn->size = conn->len + available;
if ((len = recv(conn->socket, conn->buffer + conn->len, conn->size - conn->len, 0)) < 0)
{
ERR("Got error %u; shutting down connection.\n", WSAGetLastError());
close_connection(conn);
return;
}
TRACE("Received %u bytes of data.\n", len);
conn->len += len;
ret = parse_request(conn);
}
}
if (!ret)
TRACE("Request is incomplete, waiting for more data.\n");
else if (ret < 0)
{
WARN("Failed to parse request; shutting down connection.\n");
send_400(conn);
close_connection(conn);
}
}
static DWORD WINAPI request_thread_proc(void *arg)
{
struct connection *conn, *cursor;
struct request_queue *queue;
TRACE("Starting request thread.\n");
while (!WaitForSingleObject(request_event, INFINITE))
{
EnterCriticalSection(&http_cs);
LIST_FOR_EACH_ENTRY(queue, &request_queues, struct request_queue, entry)
{
if (queue->socket != -1)
accept_connection(queue->socket);
}
LIST_FOR_EACH_ENTRY_SAFE(conn, cursor, &connections, struct connection, entry)
{
receive_data(conn);
}
LeaveCriticalSection(&http_cs);
}
TRACE("Stopping request thread.\n");
return 0;
}
static NTSTATUS http_add_url(struct request_queue *queue, IRP *irp)
{
const struct http_add_url_params *params = irp->AssociatedIrp.SystemBuffer;
struct sockaddr_in addr;
struct connection *conn;
unsigned int count = 0;
char *url, *endptr;
ULONG true = 1;
const char *p;
SOCKET s;
TRACE("host %s, context %s.\n", debugstr_a(params->url), wine_dbgstr_longlong(params->context));
if (!strncmp(params->url, "https://", 8))
{
FIXME("HTTPS is not implemented.\n");
return STATUS_NOT_IMPLEMENTED;
}
else if (strncmp(params->url, "http://", 7) || !strchr(params->url + 7, ':')
|| params->url[strlen(params->url) - 1] != '/')
return STATUS_INVALID_PARAMETER;
if (!(addr.sin_port = htons(strtol(strchr(params->url + 7, ':') + 1, &endptr, 10))) || *endptr != '/')
return STATUS_INVALID_PARAMETER;
if (!(url = heap_alloc(strlen(params->url)+1)))
return STATUS_NO_MEMORY;
strcpy(url, params->url);
for (p = url; *p; ++p)
if (*p == '/') ++count;
if (count > 3)
FIXME("Binding to relative URIs is not implemented; binding to all URIs instead.\n");
EnterCriticalSection(&http_cs);
if (queue->url && !strcmp(queue->url, url))
{
LeaveCriticalSection(&http_cs);
heap_free(url);
return STATUS_OBJECT_NAME_COLLISION;
}
else if (queue->url)
{
FIXME("Binding to multiple URLs is not implemented.\n");
LeaveCriticalSection(&http_cs);
heap_free(url);
return STATUS_NOT_IMPLEMENTED;
}
if ((s = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
{
ERR("Failed to create socket, error %u.\n", WSAGetLastError());
LeaveCriticalSection(&http_cs);
heap_free(url);
return STATUS_UNSUCCESSFUL;
}
addr.sin_family = AF_INET;
addr.sin_addr.S_un.S_addr = INADDR_ANY;
if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
ERR("Failed to bind socket, error %u.\n", WSAGetLastError());
LeaveCriticalSection(&http_cs);
closesocket(s);
heap_free(url);
return STATUS_UNSUCCESSFUL;
}
if (listen(s, SOMAXCONN) == -1)
{
ERR("Failed to listen to port %u, error %u.\n", addr.sin_port, WSAGetLastError());
LeaveCriticalSection(&http_cs);
closesocket(s);
heap_free(url);
return STATUS_OBJECT_NAME_COLLISION;
}
ioctlsocket(s, FIONBIO, &true);
WSAEventSelect(s, request_event, FD_ACCEPT);
queue->socket = s;
queue->url = url;
queue->context = params->context;
/* See if any pending requests now match this queue. */
LIST_FOR_EACH_ENTRY(conn, &connections, struct connection, entry)
{
if (conn->available && !conn->queue && host_matches(conn, queue))
{
conn->queue = queue;
try_complete_irp(conn);
}
}
LeaveCriticalSection(&http_cs);
return STATUS_SUCCESS;
}
static NTSTATUS http_remove_url(struct request_queue *queue, IRP *irp)
{
const char *url = irp->AssociatedIrp.SystemBuffer;
TRACE("host %s.\n", debugstr_a(url));
EnterCriticalSection(&http_cs);
if (!queue->url || strcmp(url, queue->url))
{
LeaveCriticalSection(&http_cs);
return STATUS_OBJECT_NAME_NOT_FOUND;
}
heap_free(queue->url);
queue->url = NULL;
LeaveCriticalSection(&http_cs);
return STATUS_SUCCESS;
}
static NTSTATUS http_receive_request(struct request_queue *queue, IRP *irp)
{
const struct http_receive_request_params *params = irp->AssociatedIrp.SystemBuffer;
struct connection *conn;
NTSTATUS ret;
TRACE("addr %s, id %s, flags %#x, bits %u.\n", wine_dbgstr_longlong(params->addr),
wine_dbgstr_longlong(params->id), params->flags, params->bits);
EnterCriticalSection(&http_cs);
LIST_FOR_EACH_ENTRY(conn, &connections, struct connection, entry)
{
if (conn->available && conn->queue == queue && params->id == conn->req_id)
{
ret = complete_irp(conn, irp);
LeaveCriticalSection(&http_cs);
return ret;
}
}
if (params->id == HTTP_NULL_ID)
{
TRACE("Queuing IRP %p.\n", irp);
InsertTailList(&queue->irp_queue, &irp->Tail.Overlay.ListEntry);
ret = STATUS_PENDING;
}
else
ret = STATUS_CONNECTION_INVALID;
LeaveCriticalSection(&http_cs);
return ret;
}
static NTSTATUS http_send_response(struct request_queue *queue, IRP *irp)
{
const struct http_response *response = irp->AssociatedIrp.SystemBuffer;
struct connection *conn;
TRACE("id %s, len %d.\n", wine_dbgstr_longlong(response->id), response->len);
EnterCriticalSection(&http_cs);
LIST_FOR_EACH_ENTRY(conn, &connections, struct connection, entry)
{
if (conn->req_id == response->id)
{
if (send(conn->socket, response->buffer, response->len, 0) >= 0)
{
conn->queue = NULL;
conn->req_id = HTTP_NULL_ID;
WSAEventSelect(conn->socket, request_event, FD_READ | FD_CLOSE);
irp->IoStatus.Information = response->len;
/* We might have another request already in the buffer. */
if (parse_request(conn) < 0)
{
WARN("Failed to parse request; shutting down connection.\n");
send_400(conn);
close_connection(conn);
}
}
else
{
ERR("Got error %u; shutting down connection.\n", WSAGetLastError());
close_connection(conn);
}
LeaveCriticalSection(&http_cs);
return STATUS_SUCCESS;
}
}
LeaveCriticalSection(&http_cs);
return STATUS_CONNECTION_INVALID;
}
static NTSTATUS WINAPI dispatch_ioctl(DEVICE_OBJECT *device, IRP *irp)
{
IO_STACK_LOCATION *stack = IoGetCurrentIrpStackLocation(irp);
struct request_queue *queue = stack->FileObject->FsContext;
NTSTATUS ret;
switch (stack->Parameters.DeviceIoControl.IoControlCode)
{
case IOCTL_HTTP_ADD_URL:
ret = http_add_url(queue, irp);
break;
case IOCTL_HTTP_REMOVE_URL:
ret = http_remove_url(queue, irp);
break;
case IOCTL_HTTP_RECEIVE_REQUEST:
ret = http_receive_request(queue, irp);
break;
case IOCTL_HTTP_SEND_RESPONSE:
ret = http_send_response(queue, irp);
break;
default:
FIXME("Unhandled ioctl %#x.\n", stack->Parameters.DeviceIoControl.IoControlCode);
ret = STATUS_NOT_IMPLEMENTED;
}
if (ret != STATUS_PENDING)
{
irp->IoStatus.Status = ret;
IoCompleteRequest(irp, IO_NO_INCREMENT);
}
else
IoMarkIrpPending(irp);
return ret;
}
static NTSTATUS WINAPI dispatch_create(DEVICE_OBJECT *device, IRP *irp)
{
IO_STACK_LOCATION *stack = IoGetCurrentIrpStackLocation(irp);
struct request_queue *queue;
if (!(queue = heap_alloc_zero(sizeof(*queue))))
return STATUS_NO_MEMORY;
stack->FileObject->FsContext = queue;
InitializeListHead(&queue->irp_queue);
EnterCriticalSection(&http_cs);
list_add_head(&request_queues, &queue->entry);
LeaveCriticalSection(&http_cs);
TRACE("Created queue %p.\n", queue);
irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
static void close_queue(struct request_queue *queue)
{
EnterCriticalSection(&http_cs);
list_remove(&queue->entry);
if (queue->socket != -1)
{
shutdown(queue->socket, SD_BOTH);
closesocket(queue->socket);
}
LeaveCriticalSection(&http_cs);
heap_free(queue->url);
heap_free(queue);
}
static NTSTATUS WINAPI dispatch_close(DEVICE_OBJECT *device, IRP *irp)
{
IO_STACK_LOCATION *stack = IoGetCurrentIrpStackLocation(irp);
struct request_queue *queue = stack->FileObject->FsContext;
TRACE("Closing queue %p.\n", queue);
close_queue(queue);
irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
static void WINAPI unload(DRIVER_OBJECT *driver)
{
struct request_queue *queue, *queue_next;
struct connection *conn, *conn_next;
thread_stop = TRUE;
SetEvent(request_event);
WaitForSingleObject(request_thread, INFINITE);
CloseHandle(request_thread);
CloseHandle(request_event);
LIST_FOR_EACH_ENTRY_SAFE(conn, conn_next, &connections, struct connection, entry)
{
close_connection(conn);
}
LIST_FOR_EACH_ENTRY_SAFE(queue, queue_next, &request_queues, struct request_queue, entry)
{
close_queue(queue);
}
WSACleanup();
IoDeleteDevice(device_obj);
NtClose(directory_obj);
}
NTSTATUS WINAPI DriverEntry(DRIVER_OBJECT *driver, UNICODE_STRING *path)
{
static const WCHAR device_nameW[] = {'\\','D','e','v','i','c','e','\\','H','t','t','p','\\','R','e','q','Q','u','e','u','e',0};
static const WCHAR directory_nameW[] = {'\\','D','e','v','i','c','e','\\','H','t','t','p',0};
OBJECT_ATTRIBUTES attr = {sizeof(attr)};
UNICODE_STRING string;
WSADATA wsadata;
NTSTATUS ret;
TRACE("driver %p, path %s.\n", driver, debugstr_w(path->Buffer));
RtlInitUnicodeString(&string, directory_nameW);
attr.ObjectName = &string;
if ((ret = NtCreateDirectoryObject(&directory_obj, 0, &attr)) && ret != STATUS_OBJECT_NAME_COLLISION)
ERR("Failed to create \\Device\\Http directory, status %#x.\n", ret);
RtlInitUnicodeString(&string, device_nameW);
if ((ret = IoCreateDevice(driver, 0, &string, FILE_DEVICE_UNKNOWN, 0, FALSE, &device_obj)))
{
ERR("Failed to create request queue device, status %#x.\n", ret);
NtClose(directory_obj);
return ret;
}
driver->MajorFunction[IRP_MJ_CREATE] = dispatch_create;
driver->MajorFunction[IRP_MJ_CLOSE] = dispatch_close;
driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = dispatch_ioctl;
driver->DriverUnload = unload;
WSAStartup(MAKEWORD(1,1), &wsadata);
request_event = CreateEventW(NULL, FALSE, FALSE, NULL);
request_thread = CreateThread(NULL, 0, request_thread_proc, NULL, 0, NULL);
return STATUS_SUCCESS;
}
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