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305 lines
7.8 KiB
C
305 lines
7.8 KiB
C
/*
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* Unix interface for ntlm_auth
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*
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* Copyright 2005, 2006 Kai Blin
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* Copyright 2021 Hans Leidekker for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#if 0
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#pragma makedep unix
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#endif
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#include <stdarg.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/wait.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winternl.h"
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#include "winbase.h"
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#include "sspi.h"
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#include "wine/debug.h"
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#include "unixlib.h"
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WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
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WINE_DECLARE_DEBUG_CHANNEL(winediag);
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#define INITIAL_BUFFER_SIZE 200
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struct com_buf
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{
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char *buffer;
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unsigned int size;
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unsigned int offset;
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};
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static SECURITY_STATUS read_line( struct ntlm_ctx *ctx, unsigned int *offset )
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{
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char *newline;
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struct com_buf *com_buf = (struct com_buf *)(ULONG_PTR)ctx->com_buf;
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if (!com_buf)
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{
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if (!(com_buf = malloc( sizeof(*com_buf) ))) return SEC_E_INSUFFICIENT_MEMORY;
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if (!(com_buf->buffer = malloc( INITIAL_BUFFER_SIZE )))
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{
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free( com_buf );
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return SEC_E_INSUFFICIENT_MEMORY;
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}
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com_buf->size = INITIAL_BUFFER_SIZE;
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com_buf->offset = 0;
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ctx->com_buf = (ULONG_PTR)com_buf;
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}
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do
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{
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ssize_t size;
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if (com_buf->offset + INITIAL_BUFFER_SIZE > com_buf->size)
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{
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char *buf = realloc( com_buf->buffer, com_buf->size + INITIAL_BUFFER_SIZE );
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if (!buf) return SEC_E_INSUFFICIENT_MEMORY;
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com_buf->size += INITIAL_BUFFER_SIZE;
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com_buf->buffer = buf;
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}
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size = read( ctx->pipe_in, com_buf->buffer + com_buf->offset, com_buf->size - com_buf->offset );
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if (size <= 0) return SEC_E_INTERNAL_ERROR;
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com_buf->offset += size;
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newline = memchr( com_buf->buffer, '\n', com_buf->offset );
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} while (!newline);
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/* if there's a newline character, and we read more than that newline, we have to store the offset so we can
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preserve the additional data */
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if (newline != com_buf->buffer + com_buf->offset) *offset = (com_buf->buffer + com_buf->offset) - (newline + 1);
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else *offset = 0;
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*newline = 0;
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return SEC_E_OK;
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}
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static NTSTATUS ntlm_chat( void *args )
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{
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const struct chat_params *params = args;
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struct ntlm_ctx *ctx = params->ctx;
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struct com_buf *com_buf;
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SECURITY_STATUS status = SEC_E_OK;
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unsigned int offset;
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write( ctx->pipe_out, params->buf, strlen(params->buf) );
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write( ctx->pipe_out, "\n", 1 );
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if ((status = read_line( ctx, &offset )) != SEC_E_OK) return status;
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com_buf = (struct com_buf *)(ULONG_PTR)ctx->com_buf;
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*params->retlen = strlen( com_buf->buffer );
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if (*params->retlen > params->buflen) return SEC_E_BUFFER_TOO_SMALL;
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if (*params->retlen < 2) return SEC_E_ILLEGAL_MESSAGE;
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if (!strncmp( com_buf->buffer, "ERR", 3 )) return SEC_E_INVALID_TOKEN;
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memcpy( params->buf, com_buf->buffer, *params->retlen + 1 );
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if (!offset) com_buf->offset = 0;
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else
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{
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memmove( com_buf->buffer, com_buf->buffer + com_buf->offset, offset );
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com_buf->offset = offset;
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}
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return SEC_E_OK;
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}
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static NTSTATUS ntlm_cleanup( void *args )
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{
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struct ntlm_ctx *ctx = args;
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struct com_buf *com_buf = (struct com_buf *)(ULONG_PTR)ctx->com_buf;
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if (!ctx || (ctx->mode != MODE_CLIENT && ctx->mode != MODE_SERVER)) return STATUS_INVALID_HANDLE;
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ctx->mode = MODE_INVALID;
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/* closing stdin will terminate ntlm_auth */
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close( ctx->pipe_out );
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close( ctx->pipe_in );
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if (ctx->pid > 0) /* reap child */
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{
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pid_t ret;
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do {
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ret = waitpid( ctx->pid, NULL, 0 );
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} while (ret < 0 && errno == EINTR);
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}
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if (com_buf) free( com_buf->buffer );
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free( com_buf );
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return STATUS_SUCCESS;
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}
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static NTSTATUS ntlm_fork( void *args )
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{
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const struct fork_params *params = args;
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struct ntlm_ctx *ctx = params->ctx;
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int pipe_in[2], pipe_out[2];
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#ifdef HAVE_PIPE2
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if (pipe2( pipe_in, O_CLOEXEC ) < 0)
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#endif
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{
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if (pipe( pipe_in ) < 0 ) return SEC_E_INTERNAL_ERROR;
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fcntl( pipe_in[0], F_SETFD, FD_CLOEXEC );
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fcntl( pipe_in[1], F_SETFD, FD_CLOEXEC );
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}
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#ifdef HAVE_PIPE2
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if (pipe2( pipe_out, O_CLOEXEC ) < 0)
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#endif
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{
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if (pipe( pipe_out ) < 0)
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{
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close( pipe_in[0] );
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close( pipe_in[1] );
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return SEC_E_INTERNAL_ERROR;
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}
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fcntl( pipe_out[0], F_SETFD, FD_CLOEXEC );
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fcntl( pipe_out[1], F_SETFD, FD_CLOEXEC );
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}
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if (!(ctx->pid = fork())) /* child */
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{
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dup2( pipe_out[0], 0 );
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close( pipe_out[0] );
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close( pipe_out[1] );
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dup2( pipe_in[1], 1 );
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close( pipe_in[0] );
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close( pipe_in[1] );
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execvp( params->argv[0], params->argv );
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write( 1, "BH\n", 3 );
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_exit( 1 );
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}
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else
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{
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ctx->pipe_in = pipe_in[0];
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close( pipe_in[1] );
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ctx->pipe_out = pipe_out[1];
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close( pipe_out[0] );
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}
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return SEC_E_OK;
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}
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static NTSTATUS ntlm_check_version( void *args )
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{
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struct ntlm_ctx ctx = { 0 };
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char *argv[3], buf[80];
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NTSTATUS status = STATUS_DLL_NOT_FOUND;
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struct fork_params params = { &ctx, argv };
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int len;
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argv[0] = (char *)"ntlm_auth";
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argv[1] = (char *)"--version";
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argv[2] = NULL;
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if (ntlm_fork( ¶ms ) != SEC_E_OK) return status;
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if ((len = read( ctx.pipe_in, buf, sizeof(buf) - 1 )) > 8)
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{
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char *newline;
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if ((newline = memchr( buf, '\n', len ))) *newline = 0;
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else buf[len] = 0;
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TRACE( "detected ntlm_auth version %s\n", debugstr_a(buf) );
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status = STATUS_SUCCESS;
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}
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if (status) ERR_(winediag)( "ntlm_auth was not found. Make sure that ntlm_auth >= 3.0.25 is in your path. "
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"Usually, you can find it in the winbind package of your distribution.\n" );
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ntlm_cleanup( &ctx );
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return status;
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}
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const unixlib_entry_t __wine_unix_call_funcs[] =
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{
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ntlm_chat,
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ntlm_cleanup,
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ntlm_fork,
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ntlm_check_version,
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};
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#ifdef _WIN64
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typedef ULONG PTR32;
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static NTSTATUS wow64_ntlm_chat( void *args )
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{
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struct
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{
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PTR32 ctx;
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PTR32 buf;
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UINT buflen;
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PTR32 retlen;
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} const *params32 = args;
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struct chat_params params =
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{
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ULongToPtr(params32->ctx),
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ULongToPtr(params32->buf),
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params32->buflen,
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ULongToPtr(params32->retlen)
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};
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return ntlm_chat( ¶ms );
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}
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static NTSTATUS wow64_ntlm_fork( void *args )
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{
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struct
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{
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PTR32 ctx;
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PTR32 argv;
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} const *params32 = args;
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struct fork_params params;
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PTR32 *argv32 = ULongToPtr(params32->argv);
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char **argv;
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NTSTATUS ret;
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int i, argc = 0;
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while (argv32[argc]) argc++;
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argv = malloc( (argc + 1) * sizeof(*argv) );
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for (i = 0; i <= argc; i++) argv[i] = ULongToPtr( argv32[i] );
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params.ctx = ULongToPtr(params32->ctx);
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params.argv = argv;
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ret = ntlm_fork( ¶ms );
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free( argv );
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return ret;
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}
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const unixlib_entry_t __wine_unix_call_wow64_funcs[] =
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{
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wow64_ntlm_chat,
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ntlm_cleanup,
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wow64_ntlm_fork,
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ntlm_check_version,
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};
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#endif /* _WIN64 */
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