[OpenSPARC-T2-DV] / verif / env / common / vera / niu_ippktgen / C / libnet / src / libnet_build_bgp.c

/*
 *  $Id: libnet_build_bgp.c,v 1.20 2005/11/29 22:21:52 carlosc Exp $
 *
 *  libnet
 *  libnet_build_bgp.c - BGP packet assembler (RFC 1771)
 *
 *  Copyright (c) 2003 Frederic Raynal <pappy@security-labs.org>
 *  All rights reserved.
 *
 * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
 *
 */

#if (HAVE_CONFIG_H)
#include "../include/config.h"
#endif
#if (!(_WIN32) || (__CYGWIN__)) 
#include "../include/libnet.h"
#else
#include "../include/win32/libnet.h"
#endif

libnet_ptag_t
libnet_build_bgp4_header(u_int8_t marker[LIBNET_BGP4_MARKER_SIZE], 
       u_int16_t len, u_int8_t type, u_int8_t *payload, u_int32_t payload_s,
       libnet_t *l, libnet_ptag_t ptag)
{
    u_int32_t n, h;
    libnet_pblock_t *p;
    struct libnet_bgp4_header_hdr bgp4_hdr;

    if (l == NULL)
    { 
        return (-1);
    } 

    n = LIBNET_BGP4_HEADER_H + payload_s;   /* size of memory block */
    h = 0;                                  /* BGP headers have no checksum */

    /*
     *  Find the existing protocol block if a ptag is specified, or create
     *  a new one.
     */
    p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_HEADER_H);
    if (p == NULL)
    {
        return (-1);
    }

	memset(&bgp4_hdr, 0, sizeof(bgp4_hdr));
	memcpy(bgp4_hdr.marker, marker, LIBNET_BGP4_MARKER_SIZE * sizeof (u_int8_t));
    bgp4_hdr.len = htons(len);
    bgp4_hdr.type = type;

    n = libnet_pblock_append(l, p, (u_int8_t *)&bgp4_hdr, LIBNET_BGP4_HEADER_H);
    if (n == -1)
    {
        goto bad;
    }

    if ((payload && !payload_s) || (!payload && payload_s))
    {
         snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
			     "%s(): payload inconsistency\n", __func__);
        goto bad;
    }

    if (payload && payload_s)
    {
        n = libnet_pblock_append(l, p, payload, payload_s);
        if (n == -1)
        {
            /* err msg set in libnet_pblock_append() */
            goto bad;
        }
    }
    
    return (ptag ? ptag : libnet_pblock_update(l, p, h,
            LIBNET_PBLOCK_BGP4_HEADER_H));
bad:
    libnet_pblock_delete(l, p);
    return (-1);
}

libnet_ptag_t
libnet_build_bgp4_open(u_int8_t version, u_int16_t src_as, u_int16_t hold_time,
            u_int32_t bgp_id, u_int8_t opt_len, u_int8_t *payload, u_int32_t payload_s,
	    libnet_t *l, libnet_ptag_t ptag)
{
    u_int32_t n, h;
    libnet_pblock_t *p;
    u_int16_t val;

    if (l == NULL)
    { 
        return (-1);
    } 

    n = LIBNET_BGP4_OPEN_H + payload_s;     /* size of memory block */
    h = 0;                                  /* BGP msg have no checksum */

    /*
     *  Find the existing protocol block if a ptag is specified, or create
     *  a new one.
     */
    p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_OPEN_H);
    if (p == NULL)
    {
        return (-1);
    }

    /* for memory alignment reason, we need to append each field separately */
    n = libnet_pblock_append(l, p, (u_int8_t *)&version, sizeof (version));
    if (n == -1)
    {
        goto bad;
    }

    val = htons(src_as);
    n = libnet_pblock_append(l, p, (u_int8_t *)&val, sizeof(src_as));
    if (n == -1)
    {
        goto bad;
    }

    val = htons(hold_time);
    n = libnet_pblock_append(l, p, (u_int8_t *)&val, sizeof(hold_time));
    if (n == -1)
    {
        goto bad;
    }

    n = htonl(bgp_id);
    n = libnet_pblock_append(l, p, (u_int8_t *)&n, sizeof(bgp_id));
    if (n == -1)
    {
        goto bad;
    }

    n = libnet_pblock_append(l, p, (u_int8_t *)&opt_len, sizeof(opt_len));
    if (n == -1)
    {
        goto bad;
    }

    if ((payload && !payload_s) || (!payload && payload_s))
    {
         snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
			     "%s(): payload inconsistency\n", __func__);
        goto bad;
    }

    if (payload && payload_s)
    {
        n = libnet_pblock_append(l, p, payload, payload_s);
        if (n == -1)
        {
            /* err msg set in libnet_pblock_append() */
            goto bad;
        }
    }
    
    return (ptag ? ptag : libnet_pblock_update(l, p, h,
           LIBNET_PBLOCK_BGP4_OPEN_H));
bad:
    libnet_pblock_delete(l, p);
    return (-1);
}

libnet_ptag_t
libnet_build_bgp4_update(u_int16_t unfeasible_rt_len, u_int8_t *withdrawn_rt,
            u_int16_t total_path_attr_len, u_int8_t *path_attributes,
	    u_int16_t info_len, u_int8_t *reachability_info,
	    u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
{
    u_int32_t n, h;
    libnet_pblock_t *p;
    u_int16_t length;

    if (l == NULL)
    { 
        return (-1);
    } 

    /* size of memory block */
    n = LIBNET_BGP4_UPDATE_H + unfeasible_rt_len + total_path_attr_len +
            info_len + payload_s;

    /* BGP msg have no checksum */
    h = 0;                                  

    /*
     *  Find the existing protocol block if a ptag is specified, or create
     *  a new one.
     */
    p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_UPDATE_H);
    if (p == NULL)
    {
        return (-1);
    }

    /* for memory alignment reason, we need to append each field separately */
    length = htons(unfeasible_rt_len);
    n = libnet_pblock_append(l, p, (u_int8_t *)&length, 
            sizeof (unfeasible_rt_len));
    if (n == -1)
    {
        goto bad;
    }

    if (unfeasible_rt_len && withdrawn_rt)
    {
	n = libnet_pblock_append(l, p, withdrawn_rt, unfeasible_rt_len);
	if (n == -1)
	{
	    goto bad;
	}
    }

    length = htons(total_path_attr_len);
    n = libnet_pblock_append(l, p, (u_int8_t *)&length,
            sizeof (total_path_attr_len));
    if (n == -1)
    {
        goto bad;
    }

    if (total_path_attr_len && path_attributes)
    {
	n = libnet_pblock_append(l, p, path_attributes, total_path_attr_len);
	if (n == -1)
	{
	    goto bad;
	}
    }

    if (info_len && reachability_info)
    {
	n = libnet_pblock_append(l, p, reachability_info, info_len);
	if (n == -1)
	{
	    goto bad;
	}
    }

    if ((payload && !payload_s) || (!payload && payload_s))
    {
         snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
			     "%s(): payload inconsistency\n", __func__);
        goto bad;
    }

    if (payload && payload_s)
    {
        n = libnet_pblock_append(l, p, payload, payload_s);
        if (n == -1)
        {
            /* err msg set in libnet_pblock_append() */
            goto bad;
        }
    }
    
    return (ptag ? ptag : libnet_pblock_update(l, p, h,
            LIBNET_PBLOCK_BGP4_UPDATE_H));
bad:
    libnet_pblock_delete(l, p);
    return (-1);
}

libnet_ptag_t
libnet_build_bgp4_notification(u_int8_t err_code, u_int8_t err_subcode,
	    u_int8_t *payload, u_int32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
{
    u_int32_t n, h;
    libnet_pblock_t *p;
    struct libnet_bgp4_notification_hdr bgp4_hdr;

    if (l == NULL)
    { 
        return (-1);
    } 

    n =  LIBNET_BGP4_NOTIFICATION_H + + payload_s;    /* size of memory block */
    h = 0; 

    /*
     *  Find the existing protocol block if a ptag is specified, or create
     *  a new one.
     */
    p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_NOTIFICATION_H);
    if (p == NULL)
    {
        return (-1);
    }

	memset(&bgp4_hdr, 0, sizeof(bgp4_hdr));
	bgp4_hdr.err_code    = err_code;
    bgp4_hdr.err_subcode = err_subcode;

    n = libnet_pblock_append(l, p, (u_int8_t *)&bgp4_hdr,
            LIBNET_BGP4_NOTIFICATION_H);
    if (n == -1)
    {
        goto bad;
    }

    if ((payload && !payload_s) || (!payload && payload_s))
    {
         snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
			     "%s(): payload inconsistency\n", __func__);
        goto bad;
    }

    if (payload && payload_s)
    {
        n = libnet_pblock_append(l, p, payload, payload_s);
        if (n == -1)
        {
            /* err msg set in libnet_pblock_append() */
            goto bad;
        }
    }
    
    return (ptag ? ptag : libnet_pblock_update(l, p, h,
            LIBNET_PBLOCK_BGP4_NOTIFICATION_H));
bad:
    libnet_pblock_delete(l, p);
    return (-1);
}

/* EOF */
Commit	Line	Data
86530b38 AT	1	/*
	2	* $Id: libnet_build_bgp.c,v 1.20 2005/11/29 22:21:52 carlosc Exp $
	3	*
	4	* libnet
	5	* libnet_build_bgp.c - BGP packet assembler (RFC 1771)
	6	*
	7	* Copyright (c) 2003 Frederic Raynal <pappy@security-labs.org>
	8	* All rights reserved.
	9	*
	10	* Redistribution and use in source and binary forms, with or without
	11	* modification, are permitted provided that the following conditions
	12	* are met:
	13	* 1. Redistributions of source code must retain the above copyright
	14	* notice, this list of conditions and the following disclaimer.
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in the
	17	* documentation and/or other materials provided with the distribution.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*
	31	*/
	32
	33	#if (HAVE_CONFIG_H)
	34	#include "../include/config.h"
	35	#endif
	36	#if (!(_WIN32) \|\| (__CYGWIN__))
	37	#include "../include/libnet.h"
	38	#else
	39	#include "../include/win32/libnet.h"
	40	#endif
	41
	42	libnet_ptag_t
	43	libnet_build_bgp4_header(u_int8_t marker[LIBNET_BGP4_MARKER_SIZE],
	44	u_int16_t len, u_int8_t type, u_int8_t *payload, u_int32_t payload_s,
	45	libnet_t *l, libnet_ptag_t ptag)
	46	{
	47	u_int32_t n, h;
	48	libnet_pblock_t *p;
	49	struct libnet_bgp4_header_hdr bgp4_hdr;
	50
	51	if (l == NULL)
	52	{
	53	return (-1);
	54	}
	55
	56	n = LIBNET_BGP4_HEADER_H + payload_s; /* size of memory block */
	57	h = 0; /* BGP headers have no checksum */
	58
	59	/*
	60	* Find the existing protocol block if a ptag is specified, or create
	61	* a new one.
	62	*/
	63	p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_HEADER_H);
	64	if (p == NULL)
65	{
66	return (-1);
67	}
68
69	memset(&bgp4_hdr, 0, sizeof(bgp4_hdr));
70	memcpy(bgp4_hdr.marker, marker, LIBNET_BGP4_MARKER_SIZE * sizeof (u_int8_t));
71	bgp4_hdr.len = htons(len);
72	bgp4_hdr.type = type;
73
74	n = libnet_pblock_append(l, p, (u_int8_t *)&bgp4_hdr, LIBNET_BGP4_HEADER_H);
75	if (n == -1)
76	{
77	goto bad;
78	}
79
80	if ((payload && !payload_s) \|\| (!payload && payload_s))
81	{
82	snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
83	"%s(): payload inconsistency\n", __func__);
84	goto bad;
85	}
86
87	if (payload && payload_s)
88	{
89	n = libnet_pblock_append(l, p, payload, payload_s);
90	if (n == -1)
91	{
92	/* err msg set in libnet_pblock_append() */
93	goto bad;
94	}
95	}
96
97	return (ptag ? ptag : libnet_pblock_update(l, p, h,
98	LIBNET_PBLOCK_BGP4_HEADER_H));
99	bad:
100	libnet_pblock_delete(l, p);
101	return (-1);
102	}
103
104	libnet_ptag_t
105	libnet_build_bgp4_open(u_int8_t version, u_int16_t src_as, u_int16_t hold_time,
106	u_int32_t bgp_id, u_int8_t opt_len, u_int8_t *payload, u_int32_t payload_s,
107	libnet_t *l, libnet_ptag_t ptag)
108	{
109	u_int32_t n, h;
110	libnet_pblock_t *p;
111	u_int16_t val;
112
113	if (l == NULL)
114	{
115	return (-1);
116	}
117
118	n = LIBNET_BGP4_OPEN_H + payload_s; /* size of memory block */
119	h = 0; /* BGP msg have no checksum */
120
121	/*
122	* Find the existing protocol block if a ptag is specified, or create
123	* a new one.
124	*/
125	p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_OPEN_H);
126	if (p == NULL)
127	{
128	return (-1);
129	}
130
131	/* for memory alignment reason, we need to append each field separately */
132	n = libnet_pblock_append(l, p, (u_int8_t *)&version, sizeof (version));
133	if (n == -1)
134	{
135	goto bad;
136	}
137
138	val = htons(src_as);
139	n = libnet_pblock_append(l, p, (u_int8_t *)&val, sizeof(src_as));
140	if (n == -1)
141	{
142	goto bad;
143	}
144
145	val = htons(hold_time);
146	n = libnet_pblock_append(l, p, (u_int8_t *)&val, sizeof(hold_time));
147	if (n == -1)
148	{
149	goto bad;
150	}
151
152	n = htonl(bgp_id);
153	n = libnet_pblock_append(l, p, (u_int8_t *)&n, sizeof(bgp_id));
154	if (n == -1)
155	{
156	goto bad;
157	}
158
159	n = libnet_pblock_append(l, p, (u_int8_t *)&opt_len, sizeof(opt_len));
160	if (n == -1)
161	{
162	goto bad;
163	}
164
165	if ((payload && !payload_s) \|\| (!payload && payload_s))
166	{
167	snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
168	"%s(): payload inconsistency\n", __func__);
169	goto bad;
170	}
171
172	if (payload && payload_s)
173	{
174	n = libnet_pblock_append(l, p, payload, payload_s);
175	if (n == -1)
176	{
177	/* err msg set in libnet_pblock_append() */
178	goto bad;
179	}
180	}
181
182	return (ptag ? ptag : libnet_pblock_update(l, p, h,
183	LIBNET_PBLOCK_BGP4_OPEN_H));
184	bad:
185	libnet_pblock_delete(l, p);
186	return (-1);
187	}
188
189	libnet_ptag_t
190	libnet_build_bgp4_update(u_int16_t unfeasible_rt_len, u_int8_t *withdrawn_rt,
191	u_int16_t total_path_attr_len, u_int8_t *path_attributes,
192	u_int16_t info_len, u_int8_t *reachability_info,
193	u_int8_t payload, u_int32_t payload_s, libnet_t l, libnet_ptag_t ptag)
194	{
195	u_int32_t n, h;
196	libnet_pblock_t *p;
197	u_int16_t length;
198
199	if (l == NULL)
200	{
201	return (-1);
202	}
203
204	/* size of memory block */
205	n = LIBNET_BGP4_UPDATE_H + unfeasible_rt_len + total_path_attr_len +
206	info_len + payload_s;
207
208	/* BGP msg have no checksum */
209	h = 0;
210
211	/*
212	* Find the existing protocol block if a ptag is specified, or create
213	* a new one.
214	*/
215	p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_UPDATE_H);
216	if (p == NULL)
217	{
218	return (-1);
219	}
220
221	/* for memory alignment reason, we need to append each field separately */
222	length = htons(unfeasible_rt_len);
223	n = libnet_pblock_append(l, p, (u_int8_t *)&length,
224	sizeof (unfeasible_rt_len));
225	if (n == -1)
226	{
227	goto bad;
228	}
229
230	if (unfeasible_rt_len && withdrawn_rt)
231	{
232	n = libnet_pblock_append(l, p, withdrawn_rt, unfeasible_rt_len);
233	if (n == -1)
234	{
235	goto bad;
236	}
237	}
238
239	length = htons(total_path_attr_len);
240	n = libnet_pblock_append(l, p, (u_int8_t *)&length,
241	sizeof (total_path_attr_len));
242	if (n == -1)
243	{
244	goto bad;
245	}
246
247	if (total_path_attr_len && path_attributes)
248	{
249	n = libnet_pblock_append(l, p, path_attributes, total_path_attr_len);
250	if (n == -1)
251	{
252	goto bad;
253	}
254	}
255
256	if (info_len && reachability_info)
257	{
258	n = libnet_pblock_append(l, p, reachability_info, info_len);
259	if (n == -1)
260	{
261	goto bad;
262	}
263	}
264
265	if ((payload && !payload_s) \|\| (!payload && payload_s))
266	{
267	snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
268	"%s(): payload inconsistency\n", __func__);
269	goto bad;
270	}
271
272	if (payload && payload_s)
273	{
274	n = libnet_pblock_append(l, p, payload, payload_s);
275	if (n == -1)
276	{
277	/* err msg set in libnet_pblock_append() */
278	goto bad;
279	}
280	}
281
282	return (ptag ? ptag : libnet_pblock_update(l, p, h,
283	LIBNET_PBLOCK_BGP4_UPDATE_H));
284	bad:
285	libnet_pblock_delete(l, p);
286	return (-1);
287	}
288
289	libnet_ptag_t
290	libnet_build_bgp4_notification(u_int8_t err_code, u_int8_t err_subcode,
291	u_int8_t payload, u_int32_t payload_s, libnet_t l, libnet_ptag_t ptag)
292	{
293	u_int32_t n, h;
294	libnet_pblock_t *p;
295	struct libnet_bgp4_notification_hdr bgp4_hdr;
296
297	if (l == NULL)
298	{
299	return (-1);
300	}
301
302	n = LIBNET_BGP4_NOTIFICATION_H + + payload_s; /* size of memory block */
303	h = 0;
304
305	/*
306	* Find the existing protocol block if a ptag is specified, or create
307	* a new one.
308	*/
309	p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_BGP4_NOTIFICATION_H);
310	if (p == NULL)
311	{
312	return (-1);
313	}
314
315	memset(&bgp4_hdr, 0, sizeof(bgp4_hdr));
316	bgp4_hdr.err_code = err_code;
317	bgp4_hdr.err_subcode = err_subcode;
318
319	n = libnet_pblock_append(l, p, (u_int8_t *)&bgp4_hdr,
320	LIBNET_BGP4_NOTIFICATION_H);
321	if (n == -1)
322	{
323	goto bad;
324	}
325
326	if ((payload && !payload_s) \|\| (!payload && payload_s))
327	{
328	snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
329	"%s(): payload inconsistency\n", __func__);
330	goto bad;
331	}
332
333	if (payload && payload_s)
334	{
335	n = libnet_pblock_append(l, p, payload, payload_s);
336	if (n == -1)
337	{
338	/* err msg set in libnet_pblock_append() */
339	goto bad;
340	}
341	}
342
343	return (ptag ? ptag : libnet_pblock_update(l, p, h,
344	LIBNET_PBLOCK_BGP4_NOTIFICATION_H));
345	bad:
346	libnet_pblock_delete(l, p);
347	return (-1);
348	}
349
350	/* EOF */