6 * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #ifndef __WTAP_INT_H__
24 #define __WTAP_INT_H__
26 #ifdef HAVE_SYS_TIME_H
34 #ifdef HAVE_WINSOCK2_H
43 #endif /* HAVE_LIBZ */
47 typedef gboolean (*subtype_read_func)(struct wtap*, int*, char**, gint64*);
48 typedef gboolean (*subtype_seek_read_func)(struct wtap*, gint64, union wtap_pseudo_header*,
49 guint8*, int, int *, char **);
52 int fd; /* File descriptor for cap file */
53 FILE_T random_fh; /* Secondary FILE_T for random access */
56 struct Buffer *frame_buffer;
57 struct wtap_pkthdr phdr;
58 union wtap_pseudo_header pseudo_header;
64 subtype_read_func subtype_read;
65 subtype_seek_read_func subtype_seek_read;
66 void (*subtype_sequential_close)(struct wtap*);
67 void (*subtype_close)(struct wtap*);
68 int file_encap; /* per-file, for those
69 file formats that have
70 per-file encapsulation
72 int tsprecision; /* timestamp precision of the lower 32bits
73 * e.g. WTAP_FILE_TSPREC_USEC */
78 typedef gboolean (*subtype_write_func)(struct wtap_dumper*,
79 const struct wtap_pkthdr*, const union wtap_pseudo_header*,
81 typedef gboolean (*subtype_close_func)(struct wtap_dumper*, int*);
93 subtype_write_func subtype_write;
94 subtype_close_func subtype_close;
96 int tsprecision; /* timestamp precision of the lower 32bits
97 * e.g. WTAP_FILE_TSPREC_USEC */
100 extern gboolean wtap_dump_file_write(wtap_dumper *wdh, const void *buf,
101 size_t bufsize, int *err);
103 extern gint wtap_num_file_types;
105 /* Macros to byte-swap 64-bit, 32-bit and 16-bit quantities. */
107 ((((x)&G_GINT64_CONSTANT(0xFF00000000000000U))>>56) | \
108 (((x)&G_GINT64_CONSTANT(0x00FF000000000000U))>>40) | \
109 (((x)&G_GINT64_CONSTANT(0x0000FF0000000000U))>>24) | \
110 (((x)&G_GINT64_CONSTANT(0x000000FF00000000U))>>8) | \
111 (((x)&G_GINT64_CONSTANT(0x00000000FF000000U))<<8) | \
112 (((x)&G_GINT64_CONSTANT(0x0000000000FF0000U))<<24) | \
113 (((x)&G_GINT64_CONSTANT(0x000000000000FF00U))<<40) | \
114 (((x)&G_GINT64_CONSTANT(0x00000000000000FFU))<<56))
116 ((((x)&0xFF000000)>>24) | \
117 (((x)&0x00FF0000)>>8) | \
118 (((x)&0x0000FF00)<<8) | \
119 (((x)&0x000000FF)<<24))
121 ((((x)&0xFF00)>>8) | \
124 /* Macros to byte-swap possibly-unaligned 64-bit, 32-bit and 16-bit quantities;
125 * they take a pointer to the quantity, and byte-swap it in place.
127 #define PBSWAP64(p) \
143 #define PBSWAP32(p) \
153 #define PBSWAP16(p) \
161 /* Turn host-byte-order values into little-endian values. */
162 #define htoles(s) GUINT16_TO_LE(s)
163 #define htolel(l) GUINT32_TO_LE(l)
164 #define htolell(ll) GUINT64_TO_LE(ll)
166 /* Pointer versions of ntohs and ntohl. Given a pointer to a member of a
167 * byte array, returns the value of the two or four bytes at the pointer.
168 * The pletoh[sl] versions return the little-endian representation.
169 * We also provide pntohll and pletohll, which extract 64-bit integral
172 * These will work regardless of the byte alignment of the pointer.
176 #define pntohs(p) ((guint16) \
177 ((guint16)*((const guint8 *)(p)+0)<<8| \
178 (guint16)*((const guint8 *)(p)+1)<<0))
182 #define pntoh24(p) ((guint32)*((const guint8 *)(p)+0)<<16| \
183 (guint32)*((const guint8 *)(p)+1)<<8| \
184 (guint32)*((const guint8 *)(p)+2)<<0)
188 #define pntohl(p) ((guint32)*((const guint8 *)(p)+0)<<24| \
189 (guint32)*((const guint8 *)(p)+1)<<16| \
190 (guint32)*((const guint8 *)(p)+2)<<8| \
191 (guint32)*((const guint8 *)(p)+3)<<0)
195 #define pntohll(p) ((guint64)*((const guint8 *)(p)+0)<<56| \
196 (guint64)*((const guint8 *)(p)+1)<<48| \
197 (guint64)*((const guint8 *)(p)+2)<<40| \
198 (guint64)*((const guint8 *)(p)+3)<<32| \
199 (guint64)*((const guint8 *)(p)+4)<<24| \
200 (guint64)*((const guint8 *)(p)+5)<<16| \
201 (guint64)*((const guint8 *)(p)+6)<<8| \
202 (guint64)*((const guint8 *)(p)+7)<<0)
207 #define pletohs(p) ((guint16) \
208 ((guint16)*((const guint8 *)(p)+1)<<8| \
209 (guint16)*((const guint8 *)(p)+0)<<0))
213 #define pletoh24(p) ((guint32)*((const guint8 *)(p)+2)<<16| \
214 (guint32)*((const guint8 *)(p)+1)<<8| \
215 (guint32)*((const guint8 *)(p)+0)<<0)
220 #define pletohl(p) ((guint32)*((const guint8 *)(p)+3)<<24| \
221 (guint32)*((const guint8 *)(p)+2)<<16| \
222 (guint32)*((const guint8 *)(p)+1)<<8| \
223 (guint32)*((const guint8 *)(p)+0)<<0)
228 #define pletohll(p) ((guint64)*((const guint8 *)(p)+7)<<56| \
229 (guint64)*((const guint8 *)(p)+6)<<48| \
230 (guint64)*((const guint8 *)(p)+5)<<40| \
231 (guint64)*((const guint8 *)(p)+4)<<32| \
232 (guint64)*((const guint8 *)(p)+3)<<24| \
233 (guint64)*((const guint8 *)(p)+2)<<16| \
234 (guint64)*((const guint8 *)(p)+1)<<8| \
235 (guint64)*((const guint8 *)(p)+0)<<0)
238 /* Pointer routines to put items out in a particular byte order.
239 * These will work regardless of the byte alignment of the pointer.
243 #define phtons(p, v) \
245 (p)[0] = (guint8)((v) >> 8); \
246 (p)[1] = (guint8)((v) >> 0); \
251 #define phtonl(p, v) \
253 (p)[0] = (guint8)((v) >> 24); \
254 (p)[1] = (guint8)((v) >> 16); \
255 (p)[2] = (guint8)((v) >> 8); \
256 (p)[3] = (guint8)((v) >> 0); \
261 #define phtonll(p, v) \
263 (p)[0] = (guint8)((v) >> 56); \
264 (p)[1] = (guint8)((v) >> 48); \
265 (p)[2] = (guint8)((v) >> 40); \
266 (p)[3] = (guint8)((v) >> 32); \
267 (p)[4] = (guint8)((v) >> 24); \
268 (p)[5] = (guint8)((v) >> 16); \
269 (p)[6] = (guint8)((v) >> 8); \
270 (p)[7] = (guint8)((v) >> 0); \
275 #define pletonll(p, v) \
277 (p)[0] = (guint8)((v) >> 0); \
278 (p)[1] = (guint8)((v) >> 8); \
279 (p)[2] = (guint8)((v) >> 16); \
280 (p)[3] = (guint8)((v) >> 24); \
281 (p)[4] = (guint8)((v) >> 32); \
282 (p)[5] = (guint8)((v) >> 40); \
283 (p)[6] = (guint8)((v) >> 48); \
284 (p)[7] = (guint8)((v) >> 56); \
288 #define wtap_file_read_unknown_bytes(target, num_bytes, fh, err) \
292 _bytes_read = file_read((target), 1, (num_bytes), (fh)); \
293 if (_bytes_read != (int) (num_bytes)) { \
294 *(err) = file_error((fh)); \
300 #define wtap_file_read_expected_bytes(target, num_bytes, fh, err) \
304 _bytes_read = file_read((target), 1, (num_bytes), (fh)); \
305 if (_bytes_read != (int) (num_bytes)) { \
306 *(err) = file_error((fh)); \
307 if (*(err) == 0 && _bytes_read > 0) { \
308 *(err) = WTAP_ERR_SHORT_READ; \
315 /* glib doesn't have g_ptr_array_len of all things!*/
316 #ifndef g_ptr_array_len
317 #define g_ptr_array_len(a) ((a)->len)
320 #endif /* __WTAP_INT_H__ */