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4-16 V1

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This commit is contained in:
manojampalam 2016-04-16 00:06:35 -07:00
parent 8f247d5c00
commit 54deeb7911
5 changed files with 150 additions and 58 deletions
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14
contrib/win32/openssh/ssh-agent.vcxproj
View File

@ -23,8 +23,10 @@
<ClCompile Include="..\win32compat\ssh-agent\agent-main.c" />
<ClCompile Include="..\win32compat\ssh-agent\agent.c" />
<ClCompile Include="..\win32compat\ssh-agent\connection.c" />
<ClCompile Include="..\win32compat\ssh-agent\agent-request.c" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\win32compat\ssh-agent\agent-request.h" />
<ClInclude Include="..\win32compat\ssh-agent\agent.h" />
</ItemGroup>
<PropertyGroup Label="Globals">
@ -107,8 +109,7 @@
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>_WIN32_WINNT=0x600;WIN32;_DEBUG;_LIB;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>false</SDLCheck>
<AdditionalIncludeDirectories>
</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>$(OpenSSH-Src-Path);$(OpenSSL-Win32-Debug-Path)include</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
</ClCompile>
@ -127,8 +128,7 @@
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>_WIN32_WINNT=0x600;WIN32;_DEBUG;_LIB;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>false</SDLCheck>
<AdditionalIncludeDirectories>
</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>$(OpenSSH-Src-Path);$(OpenSSL-x64-Debug-Path)include</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
</ClCompile>
@ -149,8 +149,7 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>_WIN32_WINNT=0x600;_LIB;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>false</SDLCheck>
<AdditionalIncludeDirectories>
</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>$(OpenSSH-Src-Path);$(OpenSSL-Win32-Release-Path)include</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
</ClCompile>
<Link>
@ -172,8 +171,7 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>_WIN32_WINNT=0x600;_LIB;_CRT_SECURE_NO_WARNINGS;_CRT_NONSTDC_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>false</SDLCheck>
<AdditionalIncludeDirectories>
</AdditionalIncludeDirectories>
<AdditionalIncludeDirectories>$(OpenSSH-Src-Path);$(OpenSSL-64-Release-Path)include</AdditionalIncludeDirectories>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
</ClCompile>
<Link>

38
contrib/win32/win32compat/ssh-agent/agent-request.c Normal file
View File

@ -0,0 +1,38 @@
/*
* Author: Manoj Ampalam <manoj.ampalam@microsoft.com>
* ssh-agent implementation on Windows
*
* Copyright (c) 2015 Microsoft Corp.
* All rights reserved
*
* Microsoft openssh win32 port
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "agent-request.h"
int
process_add_identity(struct sshbuf* request, struct sshbuf* response, HANDLE client) {
return 0;
}

13
contrib/win32/win32compat/ssh-agent/agent-request.h Normal file
View File

@ -0,0 +1,13 @@
#include <Windows.h>
typedef unsigned char u_int8_t;
typedef unsigned short u_int16_t;
typedef unsigned int u_int32_t;
typedef unsigned __int64 u_int64_t;
#define __attribute__(a)
#include "rsa.h"
#include "sshbuf.h"
#include "sshkey.h"
#include "authfd.h"
int process_add_identity(struct sshbuf*, struct sshbuf*, HANDLE);

12
contrib/win32/win32compat/ssh-agent/agent.h
View File

@ -1,16 +1,18 @@
#include <Windows.h>
#include <stdio.h>
#define BUFSIZE 5 * 1024
#define MAX_MESSAGE_SIZE 5 * 1024
#define HEADER_SIZE 4
struct agent_connection {
OVERLAPPED ol;
HANDLE connection;
HANDLE client_token;
struct {
DWORD size;
DWORD read;
char buf[BUFSIZE];
} request;
DWORD num_bytes;
DWORD transferred;
char buf[MAX_MESSAGE_SIZE];
DWORD buf_size;
} io_buf;
enum {
LISTENING = 0,
READING_HEADER,

131
contrib/win32/win32compat/ssh-agent/connection.c
View File

@ -29,20 +29,25 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "agent.h"
#include "agent-request.h"
void process_request(struct agent_connection*);
#define ABORT_CONNECTION_RETURN(c) do { \
con->state = DONE; \
agent_cleanup_connection(con); \
return; \
} while (0)
void agent_connection_on_error(struct agent_connection* con, DWORD error) {
con->state = DONE;
agent_cleanup_connection(con);
ABORT_CONNECTION_RETURN(con);
}
void agent_connection_on_io(struct agent_connection* con, DWORD bytes, OVERLAPPED* ol) {
/* process error */
if ( (bytes == 0) && (GetOverlappedResult(con->connection, ol, &bytes, FALSE) == FALSE)) {
con->state = DONE;
agent_cleanup_connection(con);
return;
}
if ((bytes == 0) && (GetOverlappedResult(con->connection, ol, &bytes, FALSE) == FALSE))
ABORT_CONNECTION_RETURN(c);
if (con->state == DONE)
DebugBreak();
@ -54,56 +59,47 @@ void agent_connection_on_io(struct agent_connection* con, DWORD bytes, OVERLAPPE
agent_listen();
case WRITING:
/* Writing is done, read next request */
/* assert on assumption that write always completes on sending all bytes*/
if (bytes != con->io_buf.num_bytes)
DebugBreak();
con->state = READING_HEADER;
ZeroMemory(&con->request, sizeof(con->request));
if (!ReadFile(con->connection, con->request.buf,
HEADER_SIZE, NULL, &con->ol) && (GetLastError() != ERROR_IO_PENDING)) {
con->state = DONE;
agent_cleanup_connection(con);
return;
}
ZeroMemory(&con->io_buf, sizeof(con->io_buf));
if (!ReadFile(con->connection, con->io_buf.buf,
HEADER_SIZE, NULL, &con->ol) && (GetLastError() != ERROR_IO_PENDING))
ABORT_CONNECTION_RETURN(c);
break;
case READING_HEADER:
con->request.read += bytes;
if (con->request.read == HEADER_SIZE) {
con->request.size = *((DWORD*)con->request.buf);
con->request.read = 0;
con->io_buf.transferred += bytes;
if (con->io_buf.transferred == HEADER_SIZE) {
con->io_buf.num_bytes = PEEK_U32(con->io_buf.buf);
con->io_buf.transferred = 0;
if (con->io_buf.num_bytes > MAX_MESSAGE_SIZE)
ABORT_CONNECTION_RETURN(c);
con->state = READING;
if (!ReadFile(con->connection, con->request.buf,
con->request.size, NULL, &con->ol)&&(GetLastError() != ERROR_IO_PENDING)) {
con->state = DONE;
agent_cleanup_connection(con);
return;
}
if (!ReadFile(con->connection, con->io_buf.buf,
con->io_buf.num_bytes, NULL, &con->ol)&&(GetLastError() != ERROR_IO_PENDING))
ABORT_CONNECTION_RETURN(c);
}
else {
if (!ReadFile(con->connection, con->request.buf + con->request.read,
HEADER_SIZE - con->request.read, NULL, &con->ol)&& (GetLastError() != ERROR_IO_PENDING)) {
con->state = DONE;
agent_cleanup_connection(con);
return;
}
if (!ReadFile(con->connection, con->io_buf.buf + con->io_buf.num_bytes,
HEADER_SIZE - con->io_buf.num_bytes, NULL, &con->ol)&& (GetLastError() != ERROR_IO_PENDING))
ABORT_CONNECTION_RETURN(c);
}
break;
case READING:
con->request.read += bytes;
if (con->request.read == con->request.size) {
/* process request and get response */
con->io_buf.transferred += bytes;
if (con->io_buf.transferred == con->io_buf.num_bytes) {
process_request(con);
con->state = WRITING;
if (!WriteFile(con->connection, con->request.buf,
con->request.size, NULL, &con->ol)&& (GetLastError() != ERROR_IO_PENDING) ){
con->state = DONE;
agent_cleanup_connection(con);
return;
}
if (!WriteFile(con->connection, con->io_buf.buf,
con->io_buf.num_bytes, NULL, &con->ol)&& (GetLastError() != ERROR_IO_PENDING) )
ABORT_CONNECTION_RETURN(c);
}
else {
if (!ReadFile(con->connection, con->request.buf + con->request.read,
con->request.size - con->request.read, NULL, &con->ol)&& (GetLastError() != ERROR_IO_PENDING)) {
con->state = DONE;
agent_cleanup_connection(con);
return;
}
if (!ReadFile(con->connection, con->io_buf.buf + con->io_buf.transferred,
con->io_buf.num_bytes - con->io_buf.transferred, NULL, &con->ol)&& (GetLastError() != ERROR_IO_PENDING))
ABORT_CONNECTION_RETURN(c);
}
break;
default:
@ -116,3 +112,48 @@ void agent_connection_disconnect(struct agent_connection* con) {
CancelIoEx(con->connection, NULL);
DisconnectNamedPipe(con->connection);
}
static void
process_request(struct agent_connection* con) {
int r;
struct sshbuf *request = NULL, *response = NULL;
u_char type;
request = sshbuf_from(con->io_buf.buf, con->io_buf.num_bytes);
response = sshbuf_new();
if ((request == NULL) || (response == NULL)) {
r = ENOMEM;
goto done;
}
if ((r = sshbuf_get_u8(request, &type)) != 0)
goto done;
switch (type) {
case SSH2_AGENTC_ADD_IDENTITY:
r = process_add_identity(request, response, con->client_token);
break;
default:
r = EINVAL;
goto done;
}
done:
if (request)
sshbuf_free(request);
ZeroMemory(&con->io_buf, sizeof(con->io_buf));
if (r == 0) {
POKE_U32(con->io_buf.buf, sshbuf_len(response));
memcpy(con->io_buf.buf + 4, sshbuf_ptr(response), sshbuf_len(response));
con->io_buf.num_bytes = sshbuf_len(response) + 4;
}
else {
POKE_U32(con->io_buf.buf, 1);
*(con->io_buf.buf + 4) = SSH_AGENT_FAILURE;
con->io_buf.num_bytes = 5;
}
if (response)
sshbuf_free(response);
}