main.c revision 98841 
1/*
2 *  Copyright (c) 1999-2002 Sendmail, Inc. and its suppliers.
3 *	All rights reserved.
4 *
5 * By using this file, you agree to the terms and conditions set
6 * forth in the LICENSE file which can be found at the top level of
7 * the sendmail distribution.
8 *
9 */
10
11#include <sm/gen.h>
12SM_RCSID("@(#)$Id: main.c,v 8.64 2002/06/04 02:32:32 geir Exp $")
13
14#define _DEFINE	1
15#include "libmilter.h"
16#include <fcntl.h>
17#include <sys/stat.h>
18
19
20static smfiDesc_ptr smfi = NULL;
21
22/*
23**  SMFI_REGISTER -- register a filter description
24**
25**	Parameters:
26**		smfilter -- description of filter to register
27**
28**	Returns:
29**		MI_SUCCESS/MI_FAILURE
30*/
31
32int
33smfi_register(smfilter)
34	smfiDesc_str smfilter;
35{
36	size_t len;
37
38	if (smfi == NULL)
39	{
40		smfi = (smfiDesc_ptr) malloc(sizeof *smfi);
41		if (smfi == NULL)
42			return MI_FAILURE;
43	}
44	(void) memcpy(smfi, &smfilter, sizeof *smfi);
45	if (smfilter.xxfi_name == NULL)
46		smfilter.xxfi_name = "Unknown";
47
48	len = strlen(smfilter.xxfi_name) + 1;
49	smfi->xxfi_name = (char *) malloc(len);
50	if (smfi->xxfi_name == NULL)
51		return MI_FAILURE;
52	(void) sm_strlcpy(smfi->xxfi_name, smfilter.xxfi_name, len);
53
54	/* compare milter version with hard coded version */
55	if (smfi->xxfi_version != SMFI_VERSION)
56	{
57		/* hard failure for now! */
58		smi_log(SMI_LOG_ERR,
59			"%s: smfi_register: version mismatch application: %d != milter: %d",
60			smfi->xxfi_name, smfi->xxfi_version,
61			(int) SMFI_VERSION);
62
63		/* XXX how about smfi? */
64		free(smfi->xxfi_name);
65		return MI_FAILURE;
66	}
67
68	return MI_SUCCESS;
69}
70
71/*
72**  SMFI_STOP -- stop milter
73**
74**	Parameters:
75**		none.
76**
77**	Returns:
78**		success.
79*/
80
81int
82smfi_stop()
83{
84	mi_stop_milters(MILTER_STOP);
85	return MI_SUCCESS;
86}
87
88/*
89**  default values for some variables.
90**	Most of these can be changed with the functions below.
91*/
92
93static int dbg = 0;
94static char *conn = NULL;
95static int timeout = MI_TIMEOUT;
96static int backlog = MI_SOMAXCONN;
97
98#if _FFR_SMFI_OPENSOCKET
99/*
100**  SMFI_OPENSOCKET -- try the socket setup to make sure we'll be
101**                     able to start up
102**
103**  	Parameters:
104**  		None.
105**
106**  	Return:
107**  		MI_SUCCESS/MI_FAILURE
108*/
109
110int
111smfi_opensocket()
112{
113	if (smfi == NULL || conn == NULL)
114		return MI_FAILURE;
115
116	return mi_opensocket(conn, backlog, dbg, smfi);
117}
118#endif /* _FFR_SMFI_OPENSOCKET */
119
120/*
121**  SMFI_SETDBG -- set debug level.
122**
123**	Parameters:
124**		odbg -- new debug level.
125**
126**	Returns:
127**		MI_SUCCESS
128*/
129
130int
131smfi_setdbg(odbg)
132	int odbg;
133{
134	dbg = odbg;
135	return MI_SUCCESS;
136}
137
138/*
139**  SMFI_SETTIMEOUT -- set timeout (for read/write).
140**
141**	Parameters:
142**		otimeout -- new timeout.
143**
144**	Returns:
145**		MI_SUCCESS
146*/
147
148int
149smfi_settimeout(otimeout)
150	int otimeout;
151{
152	timeout = otimeout;
153	return MI_SUCCESS;
154}
155
156/*
157**  SMFI_SETCONN -- set connection information (socket description)
158**
159**	Parameters:
160**		oconn -- new connection information.
161**
162**	Returns:
163**		MI_SUCCESS/MI_FAILURE
164*/
165
166int
167smfi_setconn(oconn)
168	char *oconn;
169{
170	size_t l;
171
172	if (oconn == NULL || *oconn == '\0')
173		return MI_FAILURE;
174	l = strlen(oconn) + 1;
175	if ((conn = (char *) malloc(l)) == NULL)
176		return MI_FAILURE;
177	if (sm_strlcpy(conn, oconn, l) >= l)
178		return MI_FAILURE;
179	return MI_SUCCESS;
180}
181
182/*
183**  SMFI_SETBACKLOG -- set backlog
184**
185**	Parameters:
186**		obacklog -- new backlog.
187**
188**	Returns:
189**		MI_SUCCESS/MI_FAILURE
190*/
191
192int
193smfi_setbacklog(obacklog)
194	int obacklog;
195{
196	if (obacklog <= 0)
197		return MI_FAILURE;
198	backlog = obacklog;
199	return MI_SUCCESS;
200}
201
202
203/*
204**  SMFI_MAIN -- setup milter connnection and start listener.
205**
206**	Parameters:
207**		none.
208**
209**	Returns:
210**		MI_SUCCESS/MI_FAILURE
211*/
212
213int
214smfi_main()
215{
216	int r;
217
218	(void) signal(SIGPIPE, SIG_IGN);
219	if (conn == NULL)
220	{
221		smi_log(SMI_LOG_FATAL, "%s: missing connection information",
222			smfi->xxfi_name);
223		return MI_FAILURE;
224	}
225
226	(void) atexit(mi_clean_signals);
227	if (mi_control_startup(smfi->xxfi_name) != MI_SUCCESS)
228	{
229		smi_log(SMI_LOG_FATAL,
230			"%s: Couldn't start signal thread",
231			smfi->xxfi_name);
232		return MI_FAILURE;
233	}
234	r = MI_SUCCESS;
235
236	/* Startup the listener */
237	if (mi_listener(conn, dbg, smfi, timeout, backlog) != MI_SUCCESS)
238		r = MI_FAILURE;
239
240	return r;
241}
242