2 * Copyright 2005 Kai Blin
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * A dispatcher to run ntlm_auth for wine's sspi module.
26 #include <sys/types.h>
27 #ifdef HAVE_SYS_WAIT_H
36 #include "secur32_priv.h"
37 #include "wine/debug.h"
39 #define INITIAL_BUFFER_SIZE 200
41 WINE_DEFAULT_DEBUG_CHANNEL(secur32
);
43 SECURITY_STATUS
fork_helper(PNegoHelper
*new_helper
, const char *prog
,
51 TRACE("%s ", debugstr_a(prog
));
52 for(i
= 0; argv
[i
] != NULL
; ++i
)
54 TRACE("%s ", debugstr_a(argv
[i
]));
58 if( pipe(pipe_in
) < 0 )
60 return SEC_E_INTERNAL_ERROR
;
62 if( pipe(pipe_out
) < 0 )
66 return SEC_E_INTERNAL_ERROR
;
68 if (!(helper
= HeapAlloc(GetProcessHeap(),0, sizeof(NegoHelper
))))
74 return SEC_E_INSUFFICIENT_MEMORY
;
77 helper
->helper_pid
= fork();
79 if(helper
->helper_pid
== -1)
85 HeapFree( GetProcessHeap(), 0, helper
);
86 return SEC_E_INTERNAL_ERROR
;
89 if(helper
->helper_pid
== 0)
91 /* We're in the child now */
105 /* Whoops, we shouldn't get here. Big badaboom.*/
106 write(STDOUT_FILENO
, "BH\n", 3);
111 *new_helper
= helper
;
112 helper
->version
= -1;
113 helper
->password
= NULL
;
114 helper
->com_buf
= NULL
;
115 helper
->com_buf_size
= 0;
116 helper
->com_buf_offset
= 0;
117 helper
->pipe_in
= pipe_in
[0];
119 helper
->pipe_out
= pipe_out
[1];
126 static SECURITY_STATUS
read_line(PNegoHelper helper
, int *offset_len
)
131 if(helper
->com_buf
== NULL
)
133 TRACE("Creating a new buffer for the helper\n");
134 if((helper
->com_buf
= HeapAlloc(GetProcessHeap(), 0, INITIAL_BUFFER_SIZE
)) == NULL
)
135 return SEC_E_INSUFFICIENT_MEMORY
;
137 /* Created a new buffer, size is INITIAL_BUFFER_SIZE, offset is 0 */
138 helper
->com_buf_size
= INITIAL_BUFFER_SIZE
;
139 helper
->com_buf_offset
= 0;
144 TRACE("offset = %d, size = %d\n", helper
->com_buf_offset
, helper
->com_buf_size
);
145 if(helper
->com_buf_offset
+ INITIAL_BUFFER_SIZE
> helper
->com_buf_size
)
147 /* increment buffer size in INITIAL_BUFFER_SIZE steps */
148 char *buf
= HeapReAlloc(GetProcessHeap(), 0, helper
->com_buf
,
149 helper
->com_buf_size
+ INITIAL_BUFFER_SIZE
);
150 TRACE("Resizing buffer!\n");
151 if (!buf
) return SEC_E_INSUFFICIENT_MEMORY
;
152 helper
->com_buf_size
+= INITIAL_BUFFER_SIZE
;
153 helper
->com_buf
= buf
;
155 if((read_size
= read(helper
->pipe_in
, helper
->com_buf
+ helper
->com_buf_offset
,
156 helper
->com_buf_size
- helper
->com_buf_offset
)) <= 0)
158 return SEC_E_INTERNAL_ERROR
;
161 TRACE("read_size = %d, read: %s\n", read_size
,
162 debugstr_a(helper
->com_buf
+ helper
->com_buf_offset
));
163 helper
->com_buf_offset
+= read_size
;
164 newline
= memchr(helper
->com_buf
, '\n', helper
->com_buf_offset
);
165 }while(newline
== NULL
);
167 /* Now, if there's a newline character, and we read more than that newline,
168 * we have to store the offset so we can preserve the additional data.*/
169 if( newline
!= helper
->com_buf
+ helper
->com_buf_offset
)
171 TRACE("offset_len is calculated from %p - %p\n",
172 (helper
->com_buf
+ helper
->com_buf_offset
), newline
+1);
173 /* the length of the offset is the number of chars after the newline */
174 *offset_len
= (helper
->com_buf
+ helper
->com_buf_offset
) - (newline
+ 1);
186 static SECURITY_STATUS
preserve_unused(PNegoHelper helper
, int offset_len
)
188 TRACE("offset_len = %d\n", offset_len
);
192 memmove(helper
->com_buf
, helper
->com_buf
+ helper
->com_buf_offset
,
194 helper
->com_buf_offset
= offset_len
;
198 helper
->com_buf_offset
= 0;
201 TRACE("helper->com_buf_offset was set to: %d\n", helper
->com_buf_offset
);
205 SECURITY_STATUS
run_helper(PNegoHelper helper
, char *buffer
,
206 unsigned int max_buflen
, int *buflen
)
209 SECURITY_STATUS sec_status
= SEC_E_OK
;
211 TRACE("In helper: sending %s\n", debugstr_a(buffer
));
214 write(helper
->pipe_out
, buffer
, lstrlenA(buffer
));
215 write(helper
->pipe_out
, "\n", 1);
217 if((sec_status
= read_line(helper
, &offset_len
)) != SEC_E_OK
)
222 TRACE("In helper: received %s\n", debugstr_a(helper
->com_buf
));
223 *buflen
= lstrlenA(helper
->com_buf
);
225 if( *buflen
> max_buflen
)
227 ERR("Buffer size too small(%d given, %d required) dropping data!\n",
228 max_buflen
, *buflen
);
229 return SEC_E_BUFFER_TOO_SMALL
;
234 return SEC_E_ILLEGAL_MESSAGE
;
237 if( (*buflen
<= 3) && (strncmp(helper
->com_buf
, "BH", 2) == 0))
239 return SEC_E_INTERNAL_ERROR
;
242 /* We only get ERR if the input size is too big. On a GENSEC error,
243 * ntlm_auth will return BH */
244 if(strncmp(helper
->com_buf
, "ERR", 3) == 0)
246 return SEC_E_INVALID_TOKEN
;
249 memcpy(buffer
, helper
->com_buf
, *buflen
+1);
251 sec_status
= preserve_unused(helper
, offset_len
);
256 void cleanup_helper(PNegoHelper helper
)
259 TRACE("Killing helper %p\n", helper
);
260 if( (helper
== NULL
) || (helper
->helper_pid
== 0))
263 HeapFree(GetProcessHeap(), 0, helper
->password
);
264 HeapFree(GetProcessHeap(), 0, helper
->com_buf
);
266 /* closing stdin will terminate ntlm_auth */
267 close(helper
->pipe_out
);
268 close(helper
->pipe_in
);
270 waitpid(helper
->helper_pid
, NULL
, 0);
272 helper
->helper_pid
= 0;
273 HeapFree(GetProcessHeap(), 0, helper
);
276 void check_version(PNegoHelper helper
)
281 TRACE("Checking version of helper\n");
284 int len
= read(helper
->pipe_in
, temp
, sizeof(temp
)-1);
287 if((newline
= memchr(temp
, '\n', len
)) != NULL
)
292 TRACE("Exact version is %s\n", debugstr_a(temp
));
293 if(strncmp(temp
+8, "3.9", 3) == 0)
297 else if(strncmp(temp
+8, "3.0", 3) == 0)
303 TRACE("Unknown version!\n");
304 helper
->version
= -1;