### Bug Summary

File: | wiretap/file_access.c
Warning: | line 2206, column 13 Potential leak of memory pointed to by 'wdh'

### Annotated Source Code

Press '?' to see keyboard shortcuts

Show analyzer invocation
clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name file_access.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -fno-delete-null-pointer-checks -mframe-pointer=all -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -ffloat16-excess-precision=fast -fbfloat16-excess-precision=fast -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/builds/wireshark/wireshark/build -fcoverage-compilation-dir=/builds/wireshark/wireshark/build -resource-dir /usr/lib/llvm-21/lib/clang/21 -isystem /usr/include/glib-2.0 -isystem /usr/lib/x86_64-linux-gnu/glib-2.0/include -isystem /usr/include/libxml2 -D G_DISABLE_DEPRECATED -D G_DISABLE_SINGLE_INCLUDES -D WS_BUILD_DLL -D WS_DEBUG -D WS_DEBUG_UTF_8 -D wiretap_EXPORTS -I /builds/wireshark/wireshark/build -I /builds/wireshark/wireshark -I /builds/wireshark/wireshark/include -I /builds/wireshark/wireshark/wiretap -I /builds/wireshark/wireshark/build/wiretap -D _GLIBCXX_ASSERTIONS -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/builds/wireshark/wireshark/= -fmacro-prefix-map=/builds/wireshark/wireshark/build/= -fmacro-prefix-map=../= -Wno-format-nonliteral -std=gnu11 -ferror-limit 19 -fvisibility=hidden -fwrapv -fwrapv-pointer -fstrict-flex-arrays=3 -stack-protector 2 -fstack-clash-protection -fcf-protection=full -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fexceptions -fcolor-diagnostics -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /builds/wireshark/wireshark/sbout/2025-11-30-100318-3593-1 -x c /builds/wireshark/wireshark/wiretap/file_access.c

Keyboard shortcuts:

- Use 'j/k' keys for keyboard navigation
- Use 'Shift+S' to show/hide relevant lines
- Use '?' to toggle this window

Close
Show only relevant lines Show control flow arrows

1 | /* file_access.c
2 | *
3 | * Wiretap Library
4 | * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
5 | *
6 | * SPDX-License-Identifier: GPL-2.0-or-later
7 | */
8 |
9 | #include "config.h"
10 | #define WS_LOG_DOMAIN"Wiretap" LOG_DOMAIN_WIRETAP"Wiretap"
11 | #include "wtap-int.h"
12 |
13 | #include <assert.h>
14 |
15 | #include <string.h>
16 | #include <stdlib.h>
17 |
18 | #include <errno(*__errno_location ()).h>
19 |
20 | #include <wsutil/file_util.h>
21 | #include <wsutil/file_compressed.h>
22 | #include <wsutil/tempfile.h>
23 | #ifdef HAVE_PLUGINS1
24 | #include <wsutil/plugins.h>
25 | #endif
26 | #include <wsutil/ws_assert.h>
27 |
28 | #include "wtap_module.h"
29 | #include "wtap_modules.h"
30 | #include "file_wrappers.h"
31 | #include "required_file_handlers.h"
32 | #include <wsutil/array.h>
33 | #include <wsutil/buffer.h>
34 | #include <wsutil/str_util.h>
35 |
36 | #include "lanalyzer.h"
37 | #include "ngsniffer.h"
38 | #include "radcom.h"
39 | #include "ascendtext.h"
40 | #include "nettl.h"
41 | #include "libpcap.h"
42 | #include "snoop.h"
43 | #include "iptrace.h"
44 | #include "iseries.h"
45 | #include "netmon.h"
46 | #include "netxray.h"
47 | #include "toshiba.h"
48 | #include "eyesdn.h"
49 | #include "i4btrace.h"
50 | #include "csids.h"
51 | #include "pppdump.h"
52 | #include "peekclassic.h"
53 | #include "peektagged.h"
54 | #include "vms.h"
55 | #include "dbs-etherwatch.h"
56 | #include "visual.h"
57 | #include "cosine.h"
58 | #include "5views.h"
59 | #include "erf.h"
60 | #include "hcidump.h"
61 | #include "logcat.h"
62 | #include "logcat_text.h"
63 | #include "json.h"
64 | #include "json_log.h"
65 | #include "mmodule.h"
66 | #include "observer.h"
67 | #include "k12.h"
68 | #include "ber.h"
69 | #include "catapult_dct2000.h"
70 | #include "mp4.h"
71 | #include "mp2t.h"
72 | #include "mpeg.h"
73 | #include "netscreen.h"
74 | #include "commview.h"
75 | #include "pcapng.h"
76 | #include "aethra.h"
77 | #include "btsnoop.h"
78 | #include "tnef.h"
79 | #include "dct3trace.h"
80 | #include "packetlogger.h"
81 | #include "daintree-sna.h"
82 | #include "netscaler.h"
83 | #include "mime_file.h"
84 | #include "ipfix.h"
85 | #include "vwr.h"
86 | #include "camins.h"
87 | #include "stanag4607.h"
88 | #include "capsa.h"
89 | #include "nettrace_3gpp_32_423.h"
90 | #include "mplog.h"
91 | #include "dpa400.h"
92 | #include "rfc7468.h"
93 | #include "ruby_marshal.h"
94 | #include "systemd_journal.h"
95 | #include "log3gpp.h"
96 | #include "candump.h"
97 | #include "busmaster.h"
98 | #include "cllog.h"
99 | #include "blf.h"
100 | #include "eri_enb_log.h"
101 | #include "autosar_dlt.h"
102 | #include "rtpdump.h"
103 | #include "ems.h"
104 | #include "ttl.h"
105 | #include "peak-trc.h"
106 | #include "netlog.h"
107 | #include "procmon.h"
108 |
109 | /*
110 | * Add an extension, and all compressed versions thereof if requested,
111 | * to a GSList of extensions.
112 | */
113 | static GSList *
114 | add_extensions(GSList *extensions, const char *extension,
115 | GSList *compression_type_extensions)
116 | {
117 | /*
118 | * Add the specified extension.
119 | */
120 | extensions = g_slist_prepend(extensions, g_strdup(extension)g_strdup_inline (extension));
121 |
122 | /*
123 | * Add whatever compressed versions we were supplied.
124 | */
125 | for (GSList *compression_type_extension = compression_type_extensions;
126 | compression_type_extension != NULL((void*)0);
127 | compression_type_extension = g_slist_next(compression_type_extension)((compression_type_extension) ? (((GSList *)(compression_type_extension ))->next) : ((void*)0))) {
128 | extensions = g_slist_prepend(extensions,
129 | ws_strdup_printf("%s.%s", extension,wmem_strdup_printf(((void*)0), "%s.%s", extension, (const char *)compression_type_extension->data)
130 | (const char *)compression_type_extension->data)wmem_strdup_printf(((void*)0), "%s.%s", extension, (const char *)compression_type_extension->data));
131 | }
132 |
133 | return extensions;
134 | }
135 |
136 | static const struct file_extension_info* file_type_extensions;
137 |
138 | static GArray* file_type_extensions_arr;
139 |
140 | void
141 | wtap_init_file_type_extensions(const struct file_extension_info* file_extensions, unsigned num_extensions)
142 | {
143 | file_type_extensions_arr = g_array_new(false0,true1,sizeof(struct file_extension_info));
144 |
145 | g_array_append_vals(file_type_extensions_arr, file_extensions, num_extensions);
146 |
147 | file_type_extensions = (struct file_extension_info*)(void *)file_type_extensions_arr->data;
148 | }
149 |
150 | void
151 | wtap_register_file_type_extension(const struct file_extension_info *ei)
152 | {
153 | g_array_append_val(file_type_extensions_arr,*ei)g_array_append_vals (file_type_extensions_arr, &(*ei), 1);
154 |
155 | file_type_extensions = (const struct file_extension_info*)(void *)file_type_extensions_arr->data;
156 | }
157 |
158 | int
159 | wtap_get_num_file_type_extensions(void)
160 | {
161 | return file_type_extensions_arr->len;
162 | }
163 |
164 | const char *
165 | wtap_get_file_extension_type_name(int extension_type)
166 | {
167 | return file_type_extensions[extension_type].name;
168 | }
169 |
170 | static GSList *
171 | add_extensions_for_file_extensions_type(int extension_type, GSList *extensions,
172 | GSList *compression_type_extensions)
173 | {
174 | char **extensions_set, **extensionp, *extension;
175 |
176 | /*
177 | * Split the extension-list string into a set of extensions.
178 | */
179 | extensions_set = g_strsplit(file_type_extensions[extension_type].extensions,
180 | ";", 0);
181 |
182 | /*
183 | * Add each of those extensions to the list.
184 | */
185 | for (extensionp = extensions_set; *extensionp != NULL((void*)0); extensionp++) {
186 | extension = *extensionp;
187 |
188 | /*
189 | * Add the extension, and all compressed variants
190 | * of it.
191 | */
192 | extensions = add_extensions(extensions, extension,
193 | compression_type_extensions);
194 | }
195 |
196 | g_strfreev(extensions_set);
197 | return extensions;
198 | }
199 |
200 | /* Return a list of file extensions that are used by the specified file
201 | * extension type.
202 | *
203 | * All strings in the list are allocated with g_malloc() and must be freed
204 | * with g_free().
205 | */
206 | GSList *
207 | wtap_get_file_extension_type_extensions(unsigned extension_type)
208 | {
209 | GSList *extensions, *compression_type_extensions;
210 |
211 | if (extension_type >= file_type_extensions_arr->len)
212 | return NULL((void*)0); /* not a valid extension type */
213 |
214 | extensions = NULL((void*)0); /* empty list, to start with */
215 |
216 | /*
217 | * Get compression-type extensions, if any.
218 | */
219 | compression_type_extensions = ws_get_all_compression_type_extensions_list();
220 |
221 | /*
222 | * Add all this file extension type's extensions, with compressed
223 | * variants.
224 | */
225 | extensions = add_extensions_for_file_extensions_type(extension_type,
226 | extensions, compression_type_extensions);
227 |
228 | g_slist_free(compression_type_extensions);
229 |
230 | return g_slist_reverse(extensions);
231 | }
232 |
233 | /*
234 | * The open_file_* routines must return:
235 | *
236 | * WTAP_OPEN_ERROR on an I/O error;
237 | *
238 | * WTAP_OPEN_MINE if the file they're reading is one of the types
239 | * it handles;
240 | *
241 | * WTAP_OPEN_NOT_MINE if the file they're reading isn't the type
242 | * they're checking for.
243 | *
244 | * If the routine handles this type of file, it must set the "file_type"
245 | * field in the "struct wtap" to the type of the file.
246 | *
247 | * Note that the routine does *not* have to free the private data pointer on
248 | * error. The caller takes care of that by calling wtap_close on error.
249 | * (See https://gitlab.com/wireshark/wireshark/-/issues/8518)
250 | *
251 | * However, the caller *does* have to free the private data pointer when
252 | * returning WTAP_OPEN_NOT_MINE, since the next file type will be called
253 | * and will likely just overwrite the pointer.
254 | *
255 | * The names are used in file open dialogs to select, for files that
256 | * don't have magic numbers and that could potentially be files of
257 | * more than one type based on the heuristics, a particular file
258 | * type to interpret it as, if the file name has no extension, the
259 | * extension isn't sufficient to determine the appropriate file type,
260 | * or the extension is wrong.
261 | *
262 | * NOTE: when adding file formats to this list you may also want to add them
263 | * to the following files so that the various desktop environments will
264 | * know that Wireshark can open the file:
265 | * 1) resources/freedesktop/org.wireshark.Wireshark-mime.xml (for freedesktop.org environments)
266 | * 2) packaging/macosx/WiresharkInfo.plist.in (for macOS)
267 | *
268 | * If your file format has a commonly-used extension (e.g., ".pcap") then you
269 | * should probably also add it to file_type_extensions_base[] (in this file),
270 | * to the list of "<glob pattern=...>" entries for this file format in
271 | * resources/freedesktop/org.wireshark.Wireshark-mime.xml, to the
272 | * CFBundleTypeExtensions array for this file format in
273 | * packaging/macosx/WiresharkInfo.plist, and to the PushFileExtensions macro
274 | * in packaging/nsis/wireshark-common.nsh and the File Associations in
275 | * packaging/wix/ComponentGroups.wxi (for Windows).
276 | */
277 | static const struct open_info open_info_base[] = {
278 | /* Open routines that look for magic numbers */
279 | { "Wireshark/tcpdump/... - pcap", OPEN_INFO_MAGIC, libpcap_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
280 | { "Wireshark/... - pcapng", OPEN_INFO_MAGIC, pcapng_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
281 | { "Sniffer (DOS)", OPEN_INFO_MAGIC, ngsniffer_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
282 | { "Snoop, Shomiti/Finisar Surveyor", OPEN_INFO_MAGIC, snoop_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
283 | { "AIX iptrace", OPEN_INFO_MAGIC, iptrace_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
284 | { "Microsoft Network Monitor", OPEN_INFO_MAGIC, netmon_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
285 | { "Cinco NetXray/Sniffer (Windows)", OPEN_INFO_MAGIC, netxray_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
286 | { "RADCOM WAN/LAN analyzer", OPEN_INFO_MAGIC, radcom_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
287 | { "HP-UX nettl trace", OPEN_INFO_MAGIC, nettl_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
288 | { "Visual Networks traffic capture", OPEN_INFO_MAGIC, visual_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
289 | { "InfoVista 5View capture", OPEN_INFO_MAGIC, _5views_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
290 | { "Viavi Observer", OPEN_INFO_MAGIC, observer_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
291 | { "Savvius tagged", OPEN_INFO_MAGIC, peektagged_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
292 | { "Colasoft Capsa", OPEN_INFO_MAGIC, capsa_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
293 | { "DBS Etherwatch (VMS)", OPEN_INFO_MAGIC, dbs_etherwatch_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
294 | { "Tektronix K12xx 32-bit .rf5 format", OPEN_INFO_MAGIC, k12_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
295 | { "Catapult DCT2000 trace (.out format)", OPEN_INFO_MAGIC, catapult_dct2000_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
296 | { "Aethra .aps file", OPEN_INFO_MAGIC, aethra_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
297 | { "Symbian OS btsnoop", OPEN_INFO_MAGIC, btsnoop_open, "log", NULL((void*)0), NULL((void*)0) },
298 | { "EyeSDN USB S0/E1 ISDN trace format", OPEN_INFO_MAGIC, eyesdn_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
299 | { "Transport-Neutral Encapsulation Format", OPEN_INFO_MAGIC, tnef_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
300 | /* 3GPP TS 32.423 Trace must come before MIME Files as it's XML based*/
301 | { "3GPP TS 32.423 Trace format", OPEN_INFO_MAGIC, nettrace_3gpp_32_423_file_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
302 | /* Gammu DCT3 trace must come before MIME files as it's XML based*/
303 | { "Gammu DCT3 trace", OPEN_INFO_MAGIC, dct3trace_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
304 | { "BLF Logfile", OPEN_INFO_MAGIC, blf_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
305 | { "AUTOSAR DLT Logfile", OPEN_INFO_MAGIC, autosar_dlt_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
306 | { "TTL Logfile", OPEN_INFO_MAGIC, ttl_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
307 | { "RTPDump files", OPEN_INFO_MAGIC, rtpdump_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
308 | { "MIME Files Format", OPEN_INFO_MAGIC, mime_file_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
309 | { "Micropross mplog", OPEN_INFO_MAGIC, mplog_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
310 | { "Unigraf DPA-400 capture", OPEN_INFO_MAGIC, dpa400_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
311 | { "RFC 7468 files", OPEN_INFO_MAGIC, rfc7468_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
312 | { "MS Procmon Files", OPEN_INFO_MAGIC, procmon_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
313 |
314 | /* Open routines that have no magic numbers and require heuristics. */
315 | { "Novell LANalyzer", OPEN_INFO_HEURISTIC, lanalyzer_open, "tr1", NULL((void*)0), NULL((void*)0) },
316 | /*
317 | * PacketLogger must come before MPEG, because its files
318 | * are sometimes grabbed by mpeg_open.
319 | */
320 | { "macOS PacketLogger", OPEN_INFO_HEURISTIC, packetlogger_open, "pklg", NULL((void*)0), NULL((void*)0) },
321 | /* Some MPEG files have magic numbers, others just have heuristics. */
322 | { "MPEG", OPEN_INFO_HEURISTIC, mpeg_open, "mpeg;mpg;mp3", NULL((void*)0), NULL((void*)0) },
323 | { "Daintree SNA", OPEN_INFO_HEURISTIC, daintree_sna_open, "dcf", NULL((void*)0), NULL((void*)0) },
324 | { "STANAG 4607 Format", OPEN_INFO_HEURISTIC, stanag4607_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
325 | { "ASN.1 Basic Encoding Rules", OPEN_INFO_HEURISTIC, ber_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
326 | /*
327 | * I put NetScreen *before* erf, because there were some
328 | * false positives with my test-files (Sake Blok, July 2007)
329 | *
330 | * I put VWR *after* ERF, because there were some cases where
331 | * ERF files were misidentified as vwr files (Stephen
332 | * Donnelly, August 2013; see bug 9054)
333 | *
334 | * I put VWR *after* Peek Classic, CommView, iSeries text,
335 | * Toshiba text, K12 text, VMS tcpiptrace text, and NetScaler,
336 | * because there were some cases where files of those types were
337 | * misidentified as vwr files (Guy Harris, December 2013)
338 | */
339 | { "NetScreen snoop text file", OPEN_INFO_HEURISTIC, netscreen_open, "txt", NULL((void*)0), NULL((void*)0) },
340 | { "Endace ERF capture", OPEN_INFO_HEURISTIC, erf_open, "erf", NULL((void*)0), NULL((void*)0) },
341 | { "IPFIX File Format", OPEN_INFO_HEURISTIC, ipfix_open, "pfx;ipfix",NULL((void*)0), NULL((void*)0) },
342 | { "K12 text file", OPEN_INFO_HEURISTIC, k12text_open, "txt", NULL((void*)0), NULL((void*)0) },
343 | { "Savvius classic", OPEN_INFO_HEURISTIC, peekclassic_open, "pkt;tpc;apc;wpz", NULL((void*)0), NULL((void*)0) },
344 | { "pppd log (pppdump format)", OPEN_INFO_HEURISTIC, pppdump_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
345 | { "IBM iSeries comm. trace", OPEN_INFO_HEURISTIC, iseries_open, "txt", NULL((void*)0), NULL((void*)0) },
346 | { "I4B ISDN trace", OPEN_INFO_HEURISTIC, i4btrace_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
347 | { "MPEG2 transport stream", OPEN_INFO_HEURISTIC, mp2t_open, "mp2t;ts;mpg", NULL((void*)0), NULL((void*)0) },
348 | { "CSIDS IPLog", OPEN_INFO_HEURISTIC, csids_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
349 | { "TCPIPtrace (VMS)", OPEN_INFO_HEURISTIC, vms_open, "txt", NULL((void*)0), NULL((void*)0) },
350 | { "CoSine IPSX L2 capture", OPEN_INFO_HEURISTIC, cosine_open, "txt", NULL((void*)0), NULL((void*)0) },
351 | { "Bluetooth HCI dump", OPEN_INFO_HEURISTIC, hcidump_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
352 | { "TamoSoft CommView NCF", OPEN_INFO_HEURISTIC, commview_ncf_open, "ncf", NULL((void*)0), NULL((void*)0) },
353 | { "TamoSoft CommView NCFX", OPEN_INFO_HEURISTIC, commview_ncfx_open, "ncfx", NULL((void*)0), NULL((void*)0) },
354 | { "NetScaler", OPEN_INFO_HEURISTIC, nstrace_open, "cap", NULL((void*)0), NULL((void*)0) },
355 | { "Android Logcat Binary format", OPEN_INFO_HEURISTIC, logcat_open, "logcat", NULL((void*)0), NULL((void*)0) },
356 | { "Android Logcat Text formats", OPEN_INFO_HEURISTIC, logcat_text_open, "txt", NULL((void*)0), NULL((void*)0) },
357 | { "Candump log", OPEN_INFO_HEURISTIC, candump_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
358 | { "Busmaster log", OPEN_INFO_HEURISTIC, busmaster_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
359 | { "CSS Electronics CLX000 CAN log", OPEN_INFO_MAGIC, cllog_open, "txt", NULL((void*)0), NULL((void*)0) },
360 | { "Ericsson eNode-B raw log", OPEN_INFO_MAGIC, eri_enb_log_open, NULL((void*)0), NULL((void*)0), NULL((void*)0) },
361 | { "Systemd Journal", OPEN_INFO_HEURISTIC, systemd_journal_open, "log;jnl;journal", NULL((void*)0), NULL((void*)0) },
362 | { "PEAK CAN TRC log", OPEN_INFO_HEURISTIC, peak_trc_open, "trc", NULL((void*)0), NULL((void*)0) },
363 |
364 | /* ASCII trace files from Telnet sessions. */
365 | { "Lucent/Ascend access server trace", OPEN_INFO_HEURISTIC, ascend_open, "txt", NULL((void*)0), NULL((void*)0) },
366 | { "Toshiba Compact ISDN Router snoop", OPEN_INFO_HEURISTIC, toshiba_open, "txt", NULL((void*)0), NULL((void*)0) },
367 |
368 | { "EGNOS Message Server (EMS) file", OPEN_INFO_HEURISTIC, ems_open, "ems", NULL((void*)0), NULL((void*)0) },
369 |
370 | /* NetLog needs to be before JSON because it is a specifically formatted JSON file */
371 | { "NetLog", OPEN_INFO_HEURISTIC, netlog_open, "json", NULL((void*)0), NULL((void*)0) },
372 | /* JSON Log needs to be before JSON because it handles a variety of JSON logs */
373 | { "JSON Log", OPEN_INFO_HEURISTIC, json_log_open, "json;jsonl;log", NULL((void*)0), NULL((void*)0) },
374 | { "JavaScript Object Notation", OPEN_INFO_HEURISTIC, json_open, "json", NULL((void*)0), NULL((void*)0) },
375 | { "Bachmann M-Module File", OPEN_INFO_HEURISTIC, mmodule_open, "m", NULL((void*)0), NULL((void*)0) },
376 | { "Ruby Marshal Object", OPEN_INFO_HEURISTIC, ruby_marshal_open, "", NULL((void*)0), NULL((void*)0) },
377 | { "3gpp phone log", OPEN_INFO_MAGIC, log3gpp_open, "log", NULL((void*)0), NULL((void*)0) },
378 | { "MP4 media file", OPEN_INFO_MAGIC, mp4_open, "mp4", NULL((void*)0), NULL((void*)0) },
379 | /* Extremely weak heuristics - put them at the end. */
380 | { "Ixia IxVeriWave .vwr Raw Capture", OPEN_INFO_HEURISTIC, vwr_open, "vwr", NULL((void*)0), NULL((void*)0) },
381 | { "CAM Inspector file", OPEN_INFO_HEURISTIC, camins_open, "camins", NULL((void*)0), NULL((void*)0) },
382 | };
383 |
384 | /* this is only used to build the dynamic array on load, do NOT use this
385 | * for anything else, because the size of the actual array will change if
386 | * Lua scripts register a new file reader.
387 | */
388 | #define N_OPEN_INFO_ROUTINES(sizeof (open_info_base) / sizeof (open_info_base)[0]) array_length(open_info_base)(sizeof (open_info_base) / sizeof (open_info_base)[0])
389 |
390 | static GArray *open_info_arr;
391 |
392 | /* this always points to the top of the created array */
393 | struct open_info *open_routines;
394 |
395 | /* this points to the first OPEN_INFO_HEURISTIC type in the array */
396 | static unsigned heuristic_open_routine_idx;
397 |
398 | static void
399 | set_heuristic_routine(void)
400 | {
401 | unsigned i;
402 | ws_assert(open_info_arr != NULL)do { if ((1) && !(open_info_arr != ((void*)0))) ws_log_fatal_full ("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c", 402, __func__ , "assertion failed: %s", "open_info_arr != ((void*)0)"); } while (0);
403 |
404 | for (i = 0; i < open_info_arr->len; i++) {
405 | if (open_routines[i].type == OPEN_INFO_HEURISTIC) {
406 | heuristic_open_routine_idx = i;
407 | break;
408 | }
409 | /* sanity check */
410 | ws_assert(open_routines[i].type == OPEN_INFO_MAGIC)do { if ((1) && !(open_routines[i].type == OPEN_INFO_MAGIC )) ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 410, __func__, "assertion failed: %s", "open_routines[i].type == OPEN_INFO_MAGIC" ); } while (0);
411 | }
412 |
413 | ws_assert(heuristic_open_routine_idx > 0)do { if ((1) && !(heuristic_open_routine_idx > 0)) ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 413, __func__, "assertion failed: %s", "heuristic_open_routine_idx > 0" ); } while (0);
414 | }
415 |
416 | void
417 | init_open_routines(void)
418 | {
419 | unsigned int i;
420 | struct open_info *i_open;
421 |
422 | if (open_info_arr)
423 | return;
424 |
425 | open_info_arr = g_array_new(true1,true1,sizeof(struct open_info));
426 |
427 | g_array_append_vals(open_info_arr, open_info_base, N_OPEN_INFO_ROUTINES(sizeof (open_info_base) / sizeof (open_info_base)[0]));
428 |
429 | open_routines = (struct open_info *)(void*) open_info_arr->data;
430 |
431 | /* Populate the extensions_set list now */
432 | for (i = 0, i_open = open_routines; i < open_info_arr->len; i++, i_open++) {
433 | if (i_open->extensions != NULL((void*)0))
434 | i_open->extensions_set = g_strsplit(i_open->extensions, ";", 0);
435 | }
436 |
437 | set_heuristic_routine();
438 | }
439 |
440 | /*
441 | * Registers a new file reader - currently only called by wslua code for
442 | * Lua readers and by compiled file reader plugins.
443 | *
444 | * If first_routine is true, the reader added before other readers of its
445 | * type (magic or heuristic). This should be done only in cases where
446 | * this reader's open test must be performed early, to avoid false
447 | * positives for other readers' tests treating files for this reader
448 | * as being for another reader.
449 | *
450 | * XXX - given that there is no guarantee that registration routines will
451 | * be called in a given order, all this really does is divide readers for
452 | * a given type (magic or heuristic) into two categories, with open routines
453 | * for readers in the first category (first_routine true) all being called
454 | * before readers in the second category; it does not guarantee a particular
455 | * total order for open routines.
456 | *
457 | * Checks for an existing reader of the same name and errors if it finds one;
458 | * if you want to handle that condition more gracefully, call
459 | * wtap_has_open_info() first.
460 | */
461 | void
462 | wtap_register_open_info(struct open_info *oi, const bool_Bool first_routine)
463 | {
464 | if (!oi || !oi->name) {
465 | ws_error("No open_info name given to register")ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 465, __func__, "No open_info name given to register");
466 | return;
467 | }
468 |
469 | /* verify name doesn't already exist */
470 | if (wtap_has_open_info(oi->name)) {
471 | ws_error("Name given to register_open_info already exists")ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 471, __func__, "Name given to register_open_info already exists" );
472 | return;
473 | }
474 |
475 | if (oi->extensions != NULL((void*)0))
476 | oi->extensions_set = g_strsplit(oi->extensions, ";", 0);
477 |
478 | /* if it's magic and first, prepend it; if it's heuristic and not first,
479 | append it; if it's anything else, stick it in the middle */
480 | if (first_routine && oi->type == OPEN_INFO_MAGIC) {
481 | g_array_prepend_val(open_info_arr, *oi)g_array_prepend_vals (open_info_arr, &(*oi), 1);
482 | } else if (!first_routine && oi->type == OPEN_INFO_HEURISTIC) {
483 | g_array_append_val(open_info_arr, *oi)g_array_append_vals (open_info_arr, &(*oi), 1);
484 | } else {
485 | g_array_insert_val(open_info_arr, heuristic_open_routine_idx, *oi)g_array_insert_vals (open_info_arr, heuristic_open_routine_idx , &(*oi), 1);
486 | }
487 |
488 | open_routines = (struct open_info *)(void*) open_info_arr->data;
489 | set_heuristic_routine();
490 | }
491 |
492 | /* De-registers a file reader by removing it from the GArray based on its name.
493 | * This function must NOT be called during wtap_open_offline(), since it changes the array.
494 | * Note: this function will error if it doesn't find the given name; if you want to handle
495 | * that condition more gracefully, call wtap_has_open_info() first.
496 | */
497 | void
498 | wtap_deregister_open_info(const char *name)
499 | {
500 | unsigned i;
501 |
502 | if (!name) {
503 | ws_error("Missing open_info name to de-register")ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 503, __func__, "Missing open_info name to de-register");
504 | return;
505 | }
506 |
507 | for (i = 0; i < open_info_arr->len; i++) {
508 | if (open_routines[i].name && strcmp(open_routines[i].name, name) == 0) {
509 | g_strfreev(open_routines[i].extensions_set);
510 | open_info_arr = g_array_remove_index(open_info_arr, i);
511 | set_heuristic_routine();
512 | return;
513 | }
514 | }
515 |
516 | ws_error("deregister_open_info: name not found")ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 516, __func__, "deregister_open_info: name not found");
517 | }
518 |
519 | /* Determines if a open routine short name already exists
520 | */
521 | bool_Bool
522 | wtap_has_open_info(const char *name)
523 | {
524 | unsigned i;
525 |
526 | if (!name) {
527 | ws_error("No name given to wtap_has_open_info!")ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 527, __func__, "No name given to wtap_has_open_info!");
528 | return false0;
529 | }
530 |
531 |
532 | for (i = 0; i < open_info_arr->len; i++) {
533 | if (open_routines[i].name && strcmp(open_routines[i].name, name) == 0) {
534 | return true1;
535 | }
536 | }
537 |
538 | return false0;
539 | }
540 |
541 | bool_Bool
542 | wtap_uses_lua_filehandler(const wtap* wth)
543 | {
544 | if (wth && wth->wslua_data != NULL((void*)0)) {
545 | /*
546 | * Currently, wslua_data is set if and only if using a Lua
547 | * file handler.
548 | */
549 | return true1;
550 | }
551 |
552 | return false0;
553 | }
554 |
555 | /*
556 | * Visual C++ on Win32 systems doesn't define these. (Old UNIX systems don't
557 | * define them either.)
558 | *
559 | * Visual C++ on Win32 systems doesn't define S_IFIFO, it defines _S_IFIFO.
560 | */
561 | #ifndef S_ISREG
562 | #define S_ISREG(mode)((((mode)) & 0170000) == (0100000)) (((mode) & S_IFMT0170000) == S_IFREG0100000)
563 | #endif
564 | #ifndef S_IFIFO0010000
565 | #define S_IFIFO0010000 _S_IFIFO
566 | #endif
567 | #ifndef S_ISFIFO
568 | #define S_ISFIFO(mode)((((mode)) & 0170000) == (0010000)) (((mode) & S_IFMT0170000) == S_IFIFO0010000)
569 | #endif
570 | #ifndef S_ISDIR
571 | #define S_ISDIR(mode)((((mode)) & 0170000) == (0040000)) (((mode) & S_IFMT0170000) == S_IFDIR0040000)
572 | #endif
573 |
574 | /* returns the 'type' number to use for wtap_open_offline based on the
575 | * passed-in name (the name in the open_info struct). It returns WTAP_TYPE_AUTO
576 | * on failure, which is the number 0. The 'type' number is the entry's index+1,
577 | * because that's what wtap_open_offline() expects it to be.
578 | */
579 | unsigned int
580 | open_info_name_to_type(const char *name)
581 | {
582 | unsigned int i;
583 |
584 | if (!name)
585 | return WTAP_TYPE_AUTO0;
586 |
587 | for (i = 0; i < open_info_arr->len; i++) {
588 | if (open_routines[i].name != NULL((void*)0) &&
589 | strcmp(name, open_routines[i].name) == 0)
590 | return i+1;
591 | }
592 |
593 | return WTAP_TYPE_AUTO0; /* no such file type */
594 | }
595 |
596 | static char *
597 | get_file_extension(const char *pathname)
598 | {
599 | char *filename;
600 | char **components;
601 | size_t ncomponents;
602 | char *extensionp;
603 |
604 | /*
605 | * Is the pathname empty?
606 | */
607 | if (strcmp(pathname, "") == 0)
608 | return NULL((void*)0); /* no extension */
609 |
610 | /*
611 | * Find the last component of the pathname.
612 | */
613 | filename = g_path_get_basename(pathname);
614 |
615 | /*
616 | * Does it have an extension?
617 | */
618 | if (strchr(filename, '.') == NULL((void*)0)) {
619 | g_free(filename);
620 | return NULL((void*)0); /* no extension whatsoever */
621 | }
622 |
623 | /*
624 | * Yes. Fold it to lowercase, since open_routines[] has
625 | * its extensions in lowercase.
626 | */
627 | ascii_strdown_inplace(filename);
628 |
629 | /*
630 | * Split it into components separated by ".".
631 | */
632 | components = g_strsplit(filename, ".", 0);
633 | g_free(filename);
634 |
635 | /*
636 | * Count the components.
637 | */
638 | for (ncomponents = 0; components[ncomponents] != NULL((void*)0); ncomponents++)
639 | ;
640 |
641 | if (ncomponents == 0) {
642 | g_strfreev(components);
643 | return NULL((void*)0); /* no components */
644 | }
645 | if (ncomponents == 1) {
646 | g_strfreev(components);
647 | return NULL((void*)0); /* only one component, with no "." */
648 | }
649 |
650 | /*
651 | * Get compression-type extensions, if any.
652 | */
653 | GSList *compression_type_extensions = ws_get_all_compression_type_extensions_list();
654 |
655 | /*
656 | * Is the last component one of the extensions used for compressed
657 | * files?
658 | */
659 | extensionp = components[ncomponents - 1];
660 | for (GSList *compression_type_extension = compression_type_extensions;
661 | compression_type_extension != NULL((void*)0);
662 | compression_type_extension = g_slist_next(compression_type_extension)((compression_type_extension) ? (((GSList *)(compression_type_extension ))->next) : ((void*)0))) {
663 | if (strcmp(extensionp, (const char *)compression_type_extension->data) == 0) {
664 | /*
665 | * Yes, so it's one of the compressed-file extensions.
666 | * Is there an extension before that?
667 | */
668 | if (ncomponents == 2) {
669 | g_slist_free(compression_type_extensions);
670 | g_strfreev(components);
671 | return NULL((void*)0); /* no, only two components */
672 | }
673 |
674 | /*
675 | * Yes, return that extension.
676 | */
677 | g_slist_free(compression_type_extensions);
678 | extensionp = g_strdup(components[ncomponents - 2])g_strdup_inline (components[ncomponents - 2]);
679 | g_strfreev(components);
680 | return extensionp;
681 | }
682 | }
683 |
684 | g_slist_free(compression_type_extensions);
685 |
686 | /*
687 | * The extension isn't one of the compressed-file extensions;
688 | * return it.
689 | */
690 | extensionp = g_strdup(extensionp)g_strdup_inline (extensionp);
691 | g_strfreev(components);
692 | return extensionp;
693 | }
694 |
695 | /*
696 | * Check if file extension is used in this heuristic
697 | */
698 | static bool_Bool
699 | heuristic_uses_extension(unsigned int i, const char *extension)
700 | {
701 | char **extensionp;
702 |
703 | /*
704 | * Does this file type *have* any extensions?
705 | */
706 | if (open_routines[i].extensions == NULL((void*)0))
707 | return false0; /* no */
708 |
709 | /*
710 | * Check each of them against the specified extension.
711 | */
712 | for (extensionp = open_routines[i].extensions_set; *extensionp != NULL((void*)0);
713 | extensionp++) {
714 | if (strcmp(extension, *extensionp) == 0) {
715 | return true1; /* it's one of them */
716 | }
717 | }
718 |
719 | return false0; /* it's not one of them */
720 | }
721 |
722 | /*
723 | * Attempt to open the file corresponding to "wth" using the file format
724 | * handler in "candidate".
725 | *
726 | * Returns WTAP_OPEN_MINE upon success, WTAP_OPEN_NOT_MINE if the file is not
727 | * in a suitable format for "candidate", or WTAP_OPEN_ERROR if a failure
728 | * occurred while reading the input.
729 | */
730 | static int
731 | try_one_open(wtap *wth, const struct open_info *candidate, int *err, char **err_info)
732 | {
733 | /* Seek back to the beginning of the file; the open routine for the
734 | * previous file type may have left the file position somewhere other
735 | * than the beginning, and the open routine for this file type will
736 | * probably want to start reading at the beginning.
737 | *
738 | * Initialize the data offset while we're at it.
739 | */
740 | if (file_seek(wth->fh, 0, SEEK_SET0, err) == -1) {
741 | /* Error - give up */
742 | return WTAP_OPEN_ERROR;
743 | }
744 |
745 | /* Set wth with wslua data if any - this is how we pass the data to the
746 | * file reader, kinda like the priv member but not free'd later.
747 | * It's ok for this to copy a NULL.
748 | */
749 | wth->wslua_data = candidate->wslua_data;
750 |
751 | return candidate->open_routine(wth, err, err_info);
752 | }
753 |
754 | /*
755 | * Attempt to open the file corresponding to "wth". If "type" is supplied
756 | * (i.e. other than WTAP_TYPE_AUTO), that will be the only type attempted.
757 | * Otherwise, heuristic detection of the file format will be performed,
758 | * possibly guided by the extension part of "filename".
759 | *
760 | * Returns WTAP_OPEN_MINE upon success, WTAP_OPEN_NOT_MINE if it was not
761 | * possible to determine a suitable format for the file, or WTAP_OPEN_ERROR if
762 | * a failure occurred while reading the input.
763 | */
764 | static int
765 | try_open(wtap *wth, unsigned int type, int *err, char **err_info)
766 | {
767 | int result = WTAP_OPEN_NOT_MINE;
768 | unsigned i;
769 | char *extension;
770 |
771 | /* 'type' is 1-based. */
772 | if (type != WTAP_TYPE_AUTO0 && type <= open_info_arr->len) {
773 | /* Try only the specified type. */
774 | return try_one_open(wth, &open_routines[type - 1], err, err_info);
775 | }
776 |
777 | /* First, all file types that support magic numbers. */
778 | for (i = 0; i < heuristic_open_routine_idx && result == WTAP_OPEN_NOT_MINE; i++) {
779 | result = try_one_open(wth, &open_routines[i], err, err_info);
780 | }
781 |
782 | if (result != WTAP_OPEN_NOT_MINE) {
783 | return result;
784 | }
785 |
786 | /* Does this file's name have an extension? */
787 | extension = get_file_extension(wth->pathname);
788 | if (extension != NULL((void*)0)) {
789 | unsigned pass;
790 |
791 | /*
792 | * Yes, the filename has an extension.
793 | *
794 | * The heuristic types fall into one of three categories, which
795 | * we attempt in order by scanning for each category in turn.
796 | *
797 | * First pass selects the heuristic types that list this file's
798 | * extension, as these are most likely to be the correct choice
799 | * for this file.
800 | *
801 | * Second pass selects heuristic types which have no
802 | * extensions. We try those before the ones that have
803 | * extensions that *don't* match this file's extension, on the
804 | * theory that files of those types generally have one of the
805 | * type's extensions, and, as this file *doesn't* have one of
806 | * those extensions, it's probably *not* one of those files.
807 | *
808 | * Third pass selects heuristic types which support extensions
809 | * but where none of them matches this file's extension.
810 | *
811 | * We need only continue searching until we find a match or an
812 | * error occurs.
813 | */
814 |
815 | for (pass = 0; pass < 3 && result == WTAP_OPEN_NOT_MINE; pass++) {
816 | for (i = heuristic_open_routine_idx; i < open_info_arr->len && result == WTAP_OPEN_NOT_MINE; i++) {
817 | if ( (pass == 0 && heuristic_uses_extension(i, extension))
818 | || (pass == 1 && open_routines[i].extensions == NULL((void*)0))
819 | || (pass == 2 && open_routines[i].extensions != NULL((void*)0)
820 | && !heuristic_uses_extension(i, extension))) {
821 | result = try_one_open(wth, &open_routines[i], err, err_info);
822 | }
823 | }
824 | }
825 |
826 | g_free(extension);
827 | } else {
828 | /* No extension. Try all the heuristic types in order. */
829 | for (i = heuristic_open_routine_idx; i < open_info_arr->len && result == WTAP_OPEN_NOT_MINE; i++) {
830 | result = try_one_open(wth, &open_routines[i], err, err_info);
831 | }
832 | }
833 |
834 | return result;
835 | }
836 |
837 | /* Opens a file and prepares a wtap struct.
838 | * If "do_random" is true, it opens the file twice; the second open
839 | * allows the application to do random-access I/O without moving
840 | * the seek offset for sequential I/O, which is used by Wireshark
841 | * so that it can do sequential I/O to a capture file that's being
842 | * written to as new packets arrive independently of random I/O done
843 | * to display protocol trees for packets when they're selected.
844 | */
845 | wtap *
846 | wtap_open_offline(const char *filename, unsigned int type, int *err, char **err_info,
847 | bool_Bool do_random, const char* app_env_var_prefix)
848 | {
849 | int fd;
850 | ws_statb64struct stat statb;
851 | bool_Bool ispipe = false0;
852 | wtap *wth;
853 | bool_Bool use_stdin = false0;
854 | wtap_block_t shb;
855 |
856 | *err = 0;
857 | *err_info = NULL((void*)0);
858 |
859 | /* open standard input if filename is '-' */
860 | if (strcmp(filename, "-") == 0)
861 | use_stdin = true1;
862 |
863 | /* First, make sure the file is valid */
864 | if (use_stdin) {
865 | if (ws_fstat64fstat(0, &statb) < 0) {
866 | *err = errno(*__errno_location ());
867 | return NULL((void*)0);
868 | }
869 | } else {
870 | if (ws_stat64stat(filename, &statb) < 0) {
871 | *err = errno(*__errno_location ());
872 | return NULL((void*)0);
873 | }
874 | }
875 | if (S_ISFIFO(statb.st_mode)((((statb.st_mode)) & 0170000) == (0010000))) {
876 | /*
877 | * Opens of FIFOs are allowed only when not opening
878 | * for random access.
879 | *
880 | * Currently, we do seeking when trying to find out
881 | * the file type, but our I/O routines do some amount
882 | * of buffering, and do backward seeks within the buffer
883 | * if possible, so at least some file types can be
884 | * opened from pipes, so we don't completely disallow opens
885 | * of pipes.
886 | */
887 | if (do_random) {
888 | *err = WTAP_ERR_RANDOM_OPEN_PIPE-2;
889 | return NULL((void*)0);
890 | }
891 | ispipe = true1;
892 | } else if (S_ISDIR(statb.st_mode)((((statb.st_mode)) & 0170000) == (0040000))) {
893 | /*
894 | * Return different errors for "this is a directory"
895 | * and "this is some random special file type", so
896 | * the user can get a potentially more helpful error.
897 | */
898 | *err = EISDIR21;
899 | return NULL((void*)0);
900 | } else if (! S_ISREG(statb.st_mode)((((statb.st_mode)) & 0170000) == (0100000))) {
901 | *err = WTAP_ERR_NOT_REGULAR_FILE-1;
902 | return NULL((void*)0);
903 | }
904 |
905 | /*
906 | * We need two independent descriptors for random access, so
907 | * they have different file positions. If we're opening the
908 | * standard input, we can only dup it to get additional
909 | * descriptors, so we can't have two independent descriptors,
910 | * and thus can't do random access.
911 | */
912 | if (use_stdin && do_random) {
913 | *err = WTAP_ERR_RANDOM_OPEN_STDIN-16;
914 | return NULL((void*)0);
915 | }
916 |
917 | errno(*__errno_location ()) = ENOMEM12;
918 | wth = g_new0(wtap, 1)((wtap *) g_malloc0_n ((1), sizeof (wtap)));
919 |
920 | /* Open the file */
921 | errno(*__errno_location ()) = WTAP_ERR_CANT_OPEN-6;
922 | if (use_stdin) {
923 | /*
924 | * We dup FD 0, so that we don't have to worry about
925 | * a file_close of wth->fh closing the standard
926 | * input of the process.
927 | */
928 | fd = ws_dupdup(0);
929 | if (fd < 0) {
930 | *err = errno(*__errno_location ());
931 | g_free(wth);
932 | return NULL((void*)0);
933 | }
934 | #ifdef _WIN32
935 | if (_setmode(fd, O_BINARY0) == -1) {
936 | /* "Shouldn't happen" */
937 | *err = errno(*__errno_location ());
938 | g_free(wth);
939 | return NULL((void*)0);
940 | }
941 | #endif
942 | if (!(wth->fh = file_fdopen(fd))) {
943 | *err = errno(*__errno_location ());
944 | ws_closeclose(fd);
945 | g_free(wth);
946 | return NULL((void*)0);
947 | }
948 | } else {
949 | if (!(wth->fh = file_open(filename))) {
950 | *err = errno(*__errno_location ());
951 | g_free(wth);
952 | return NULL((void*)0);
953 | }
954 | }
955 |
956 | if (do_random) {
957 | if (!(wth->random_fh = file_open(filename))) {
958 | *err = errno(*__errno_location ());
959 | file_close(wth->fh);
960 | g_free(wth);
961 | return NULL((void*)0);
962 | }
963 | } else
964 | wth->random_fh = NULL((void*)0);
965 |
966 | /* initialization */
967 | wth->ispipe = ispipe;
968 | wth->file_encap = WTAP_ENCAP_UNKNOWN0;
969 | wth->subtype_sequential_close = NULL((void*)0);
970 | wth->subtype_close = NULL((void*)0);
971 | wth->file_tsprec = WTAP_TSPREC_USEC6;
972 | nstime_set_unset(&wth->file_start_ts);
973 | nstime_set_unset(&wth->file_end_ts);
974 | wth->pathname = g_strdup(filename)g_strdup_inline (filename);
975 | wth->priv = NULL((void*)0);
976 | wth->wslua_data = NULL((void*)0);
977 | wth->shb_hdrs = g_array_new(false0, false0, sizeof(wtap_block_t));
978 | wth->app_env_var_prefix = app_env_var_prefix;
979 | shb = wtap_block_create(WTAP_BLOCK_SECTION);
980 | if (shb)
981 | g_array_append_val(wth->shb_hdrs, shb)g_array_append_vals (wth->shb_hdrs, &(shb), 1);
982 |
983 | /* Initialize the array containing a list of interfaces. pcapng_open and
984 | * erf_open needs this (and libpcap_open for ERF encapsulation types).
985 | * Always initing it here saves checking for a NULL ptr later. */
986 | wth->interface_data = g_array_new(false0, false0, sizeof(wtap_block_t));
987 | /*
988 | * Next interface data that wtap_get_next_interface_description()
989 | * will return.
990 | */
991 | wth->next_interface_data = 0;
992 |
993 | wth->shb_iface_to_global = g_array_new(false0, false0, sizeof(unsigned));
994 | g_array_append_val(wth->shb_iface_to_global, wth->interface_data->len)g_array_append_vals (wth->shb_iface_to_global, &(wth-> interface_data->len), 1);
995 |
996 | if (wth->random_fh) {
997 | wth->fast_seek = g_ptr_array_new();
998 |
999 | file_set_random_access(wth->fh, false0, wth->fast_seek);
1000 | file_set_random_access(wth->random_fh, true1, wth->fast_seek);
1001 | }
1002 |
1003 | /* Find a file format handler which can read the file. */
1004 | switch (try_open(wth, type, err, err_info)) {
1005 | case WTAP_OPEN_NOT_MINE:
1006 | /* Well, it's not one of the types of file we know about. */
1007 | *err = WTAP_ERR_FILE_UNKNOWN_FORMAT-3;
1008 | /* FALLTHROUGH */
1009 |
1010 | case WTAP_OPEN_ERROR:
1011 | wtap_close(wth);
1012 | wth = NULL((void*)0);
1013 | }
1014 |
1015 | return wth;
1016 | }
1017 |
1018 | /*
1019 | * Given the pathname of the file we just closed with wtap_fdclose(), attempt
1020 | * to reopen that file and assign the new file descriptor(s) to the sequential
1021 | * stream and, if do_random is true, to the random stream. Used on Windows
1022 | * after the rename of a file we had open was done or if the rename of a
1023 | * file on top of a file we had open failed.
1024 | *
1025 | * This is only required by Wireshark, not TShark, and, at the point that
1026 | * Wireshark is doing this, the sequential stream is closed, and the
1027 | * random stream is open, so this refuses to open pipes, and only
1028 | * reopens the random stream.
1029 | */
1030 | bool_Bool
1031 | wtap_fdreopen(wtap *wth, const char *filename, int *err)
1032 | {
1033 | ws_statb64struct stat statb;
1034 |
1035 | /*
1036 | * We need two independent descriptors for random access, so
1037 | * they have different file positions. If we're opening the
1038 | * standard input, we can only dup it to get additional
1039 | * descriptors, so we can't have two independent descriptors,
1040 | * and thus can't do random access.
1041 | */
1042 | if (strcmp(filename, "-") == 0) {
1043 | *err = WTAP_ERR_RANDOM_OPEN_STDIN-16;
1044 | return false0;
1045 | }
1046 |
1047 | /* First, make sure the file is valid */
1048 | if (ws_stat64stat(filename, &statb) < 0) {
1049 | *err = errno(*__errno_location ());
1050 | return false0;
1051 | }
1052 | if (S_ISFIFO(statb.st_mode)((((statb.st_mode)) & 0170000) == (0010000))) {
1053 | /*
1054 | * Opens of FIFOs are not allowed; see above.
1055 | */
1056 | *err = WTAP_ERR_RANDOM_OPEN_PIPE-2;
1057 | return false0;
1058 | } else if (S_ISDIR(statb.st_mode)((((statb.st_mode)) & 0170000) == (0040000))) {
1059 | /*
1060 | * Return different errors for "this is a directory"
1061 | * and "this is some random special file type", so
1062 | * the user can get a potentially more helpful error.
1063 | */
1064 | *err = EISDIR21;
1065 | return false0;
1066 | } else if (! S_ISREG(statb.st_mode)((((statb.st_mode)) & 0170000) == (0100000))) {
1067 | *err = WTAP_ERR_NOT_REGULAR_FILE-1;
1068 | return false0;
1069 | }
1070 |
1071 | /* Open the file */
1072 | errno(*__errno_location ()) = WTAP_ERR_CANT_OPEN-6;
1073 | if (!file_fdreopen(wth->random_fh, filename)) {
1074 | *err = errno(*__errno_location ());
1075 | return false0;
1076 | }
1077 | if (strcmp(filename, wth->pathname) != 0) {
1078 | g_free(wth->pathname);
1079 | wth->pathname = g_strdup(filename)g_strdup_inline (filename);
1080 | }
1081 | return true1;
1082 | }
1083 |
1084 | /* Table of the file types and subtypes for which we have support. */
1085 |
1086 | /*
1087 | * Pointer to the GArray holding the registered file types.
1088 | */
1089 | static GArray* file_type_subtype_table_arr;
1090 |
1091 | /*
1092 | * Pointer to the table of registered file types in that GArray.
1093 | */
1094 | static const struct file_type_subtype_info* file_type_subtype_table;
1095 |
1096 | /*
1097 | * Number of elements in the table for builtin file types/subtypes.
1098 | */
1099 | static unsigned wtap_num_builtin_file_types_subtypes;
1100 |
1101 | /*
1102 | * Required builtin types.
1103 | */
1104 | int pcap_file_type_subtype = -1;
1105 | int pcap_nsec_file_type_subtype = -1;
1106 | int pcapng_file_type_subtype = -1;
1107 |
1108 | /*
1109 | * Table for mapping old file type/subtype names to new ones for
1110 | * backwards compatibility.
1111 | */
1112 | static GHashTable *type_subtype_name_map;
1113 |
1114 | /*
1115 | * Initialize the table of file types/subtypes with all the builtin
1116 | * types/subtypes.
1117 | */
1118 | void
1119 | wtap_init_file_type_subtypes(const char* app_env_var_prefix)
1120 | {
1121 | /* Don't do this twice. */
1122 | ws_assert(file_type_subtype_table_arr == NULL)do { if ((1) && !(file_type_subtype_table_arr == ((void *)0))) ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 1122, __func__, "assertion failed: %s", "file_type_subtype_table_arr == ((void*)0)" ); } while (0);
1123 |
1124 | /*
1125 | * Estimate the number of file types/subtypes as twice the
1126 | * number of modules; that's probably an overestimate, as
1127 | * the average number of file types/subtypes registered by
1128 | * a module is > 1 but probably < 2, but that shouldn't
1129 | * waste too much memory.
1130 | *
1131 | * Add on 7 more for pcapng, pcap, nanosecond pcap, and the
1132 | * extra modified flavors of pcap.
1133 | */
1134 | file_type_subtype_table_arr = g_array_sized_new(false0, true1,
1135 | sizeof(struct file_type_subtype_info), wtap_module_count*2 + 7);
1136 | file_type_subtype_table = (const struct file_type_subtype_info*)(void *)file_type_subtype_table_arr->data;
1137 |
1138 | /*
1139 | * Initialize the hash table for mapping old file type/subtype
1140 | * names to the corresponding new names.
1141 | */
1142 | type_subtype_name_map = g_hash_table_new_full(g_str_hash,
1143 | g_str_equal, g_free, g_free);
1144 |
1145 | /* No entries yet, so no builtin entries yet. */
1146 | wtap_num_builtin_file_types_subtypes = 0;
1147 |
1148 | /*
1149 | * Register the builtin entries that aren't in the table.
1150 | * First, do the required ones; register pcapng first, then
1151 | * pcap, so, at the beginning of the table, we have pcapng,
1152 | * pcap, nanosecond pcap, and the weird modified pcaps, so
1153 | * searches for file types that can write a file format
1154 | * start with pcapng, pcap, and nanosecond pcap.
1155 | */
1156 | register_pcapng(app_env_var_prefix);
1157 | register_pcap();
1158 |
1159 | /* Now register the ones found by the build process */
1160 | for (unsigned i = 0; i < wtap_module_count; i++)
1161 | wtap_module_reg[i].cb_func();
1162 |
1163 | /* Update the number of builtin entries. */
1164 | wtap_num_builtin_file_types_subtypes = file_type_subtype_table_arr->len;
1165 | }
1166 |
1167 | /*
1168 | * Attempt to register a new file type/subtype; fails if a type/subtype
1169 | * with that name is already registered.
1170 | */
1171 | int
1172 | wtap_register_file_type_subtype(const struct file_type_subtype_info* fi)
1173 | {
1174 | struct file_type_subtype_info* finfo;
1175 | unsigned file_type_subtype;
1176 |
1177 | /*
1178 | * Check for required fields (description and name).
1179 | */
1180 | if (!fi || !fi->description || !fi->name) {
1181 | ws_warning("no file type info")do { if (1) { ws_log_full("Wiretap", LOG_LEVEL_WARNING, "wiretap/file_access.c" , 1181, __func__, "no file type info"); } } while (0);
1182 | return -1;
1183 | }
1184 |
1185 | /*
1186 | * There must be at least one block type that this file
1187 | * type/subtype supports.
1188 | */
1189 | if (fi->num_supported_blocks == 0 || fi->supported_blocks == NULL((void*)0)) {
1190 | ws_warning("no blocks supported by file type \"%s\"", fi->name)do { if (1) { ws_log_full("Wiretap", LOG_LEVEL_WARNING, "wiretap/file_access.c" , 1190, __func__, "no blocks supported by file type \"%s\"", fi ->name); } } while (0);
1191 | return -1;
1192 | }
1193 |
1194 | /*
1195 | * Is this type already registered?
1196 | */
1197 | if (wtap_name_to_file_type_subtype(fi->name) != -1) {
1198 | /*
1199 | * Yes. You don't get to replace an existing handler.
1200 | */
1201 | ws_warning("file type \"%s\" is already registered", fi->name)do { if (1) { ws_log_full("Wiretap", LOG_LEVEL_WARNING, "wiretap/file_access.c" , 1201, __func__, "file type \"%s\" is already registered", fi ->name); } } while (0);
1202 | return -1;
1203 | }
1204 |
1205 | /*
1206 | * Is there a freed entry in the array, due to a file type
1207 | * being de-registered?
1208 | *
1209 | * Skip the built-in entries, as they're never deregistered.
1210 | */
1211 | for (file_type_subtype = wtap_num_builtin_file_types_subtypes;
1212 | file_type_subtype < file_type_subtype_table_arr->len;
1213 | file_type_subtype++) {
1214 | if (file_type_subtype_table[file_type_subtype].name == NULL((void*)0)) {
1215 | /*
1216 | * We found such an entry.
1217 | *
1218 | * Get the pointer from the GArray, so that we get a
1219 | * non-const pointer.
1220 | */
1221 | finfo = &g_array_index(file_type_subtype_table_arr, struct file_type_subtype_info, file_type_subtype)(((struct file_type_subtype_info*) (void *) (file_type_subtype_table_arr )->data) [(file_type_subtype)]);
1222 |
1223 | /*
1224 | * Fill in the entry with the new values.
1225 | */
1226 | *finfo = *fi;
1227 |
1228 | return (int)file_type_subtype;
1229 | }
1230 | }
1231 |
1232 | /*
1233 | * There aren't any free slots, so add a new entry.
1234 | * Get the number of current number of entries, which will
1235 | * be the index of the new entry, then append this entry
1236 | * to the end of the array, change file_type_subtype_table
1237 | * in case the array had to get reallocated, and return
1238 | * the index of the new entry.
1239 | */
1240 | file_type_subtype = file_type_subtype_table_arr->len;
1241 | g_array_append_val(file_type_subtype_table_arr, *fi)g_array_append_vals (file_type_subtype_table_arr, &(*fi), 1);
1242 | file_type_subtype_table = (const struct file_type_subtype_info*)(void *)file_type_subtype_table_arr->data;
1243 | return file_type_subtype;
1244 | }
1245 |
1246 | /* De-registers a file writer - they can never be removed from the GArray, but we can "clear" an entry.
1247 | */
1248 | void
1249 | wtap_deregister_file_type_subtype(const int subtype)
1250 | {
1251 | struct file_type_subtype_info* finfo;
1252 |
1253 | if (subtype < 0 || subtype >= (int)file_type_subtype_table_arr->len) {
1254 | ws_error("invalid file type to de-register")ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 1254, __func__, "invalid file type to de-register");
1255 | return;
1256 | }
1257 | if ((unsigned)subtype < wtap_num_builtin_file_types_subtypes) {
1258 | ws_error("built-in file types cannot be de-registered")ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 1258, __func__, "built-in file types cannot be de-registered" );
1259 | return;
1260 | }
1261 |
1262 | /*
1263 | * Get the pointer from the GArray, so that we get a non-const
1264 | * pointer.
1265 | */
1266 | finfo = &g_array_index(file_type_subtype_table_arr, struct file_type_subtype_info, subtype)(((struct file_type_subtype_info*) (void *) (file_type_subtype_table_arr )->data) [(subtype)]);
1267 | /*
1268 | * Clear out this entry.
1269 | */
1270 | finfo->description = NULL((void*)0);
1271 | finfo->name = NULL((void*)0);
1272 | finfo->default_file_extension = NULL((void*)0);
1273 | finfo->additional_file_extensions = NULL((void*)0);
1274 | finfo->writing_must_seek = false0;
1275 | finfo->num_supported_blocks = 0;
1276 | finfo->supported_blocks = NULL((void*)0);
1277 | finfo->can_write_encap = NULL((void*)0);
1278 | finfo->dump_open = NULL((void*)0);
1279 | finfo->wslua_info = NULL((void*)0);
1280 | }
1281 |
1282 | /*
1283 | * Given a GArray of WTAP_ENCAP_ types, return the per-file encapsulation
1284 | * type that would be needed to write out a file with those types. If
1285 | * there's only one type, it's that type, otherwise it's
1286 | * WTAP_ENCAP_PER_PACKET.
1287 | */
1288 | int
1289 | wtap_dump_required_file_encap_type(const GArray *file_encaps)
1290 | {
1291 | int encap;
1292 |
1293 | encap = WTAP_ENCAP_PER_PACKET-1;
1294 | if (file_encaps->len == 1) {
1295 | /* OK, use the one-and-only encapsulation type. */
1296 | encap = g_array_index(file_encaps, int, 0)(((int*) (void *) (file_encaps)->data) [(0)]);
1297 | }
1298 | return encap;
1299 | }
1300 |
1301 | bool_Bool
1302 | wtap_dump_can_write_encap(int file_type_subtype, int encap)
1303 | {
1304 | int result = 0;
1305 |
1306 | if (file_type_subtype < 0 ||
1307 | file_type_subtype >= (int)file_type_subtype_table_arr->len ||
1308 | file_type_subtype_table[file_type_subtype].can_write_encap == NULL((void*)0))
1309 | return false0;
1310 |
1311 | result = (*file_type_subtype_table[file_type_subtype].can_write_encap)(encap);
1312 |
1313 | if (result != 0) {
1314 | /* if the err said to check wslua's can_write_encap, try that */
1315 | if (result == WTAP_ERR_CHECK_WSLUA-23
1316 | && file_type_subtype_table[file_type_subtype].wslua_info != NULL((void*)0)
1317 | && file_type_subtype_table[file_type_subtype].wslua_info->wslua_can_write_encap != NULL((void*)0)) {
1318 |
1319 | result = (*file_type_subtype_table[file_type_subtype].wslua_info->wslua_can_write_encap)(encap, file_type_subtype_table[file_type_subtype].wslua_info->wslua_data);
1320 |
1321 | }
1322 |
1323 | if (result != 0)
1324 | return false0;
1325 | }
1326 |
1327 | return true1;
1328 | }
1329 |
1330 | /*
1331 | * Return true if a capture with a given GArray of encapsulation types
1332 | * and a given bitset of comment types can be written in a specified
1333 | * format, and false if it can't.
1334 | */
1335 | static bool_Bool
1336 | wtap_dump_can_write_format(int ft, const GArray *file_encaps,
1337 | uint32_t required_comment_types)
1338 | {
1339 | unsigned i;
1340 |
1341 | /*
1342 | * Can we write in this format?
1343 | */
1344 | if (!wtap_dump_can_open(ft)) {
1345 | /* No. */
1346 | return false0;
1347 | }
1348 |
1349 | /*
1350 | * Yes. Can we write out all the required comments in this
1351 | * format?
1352 | */
1353 | if (required_comment_types & WTAP_COMMENT_PER_SECTION0x00000001) {
1354 | if (wtap_file_type_subtype_supports_option(ft,
1355 | WTAP_BLOCK_SECTION, OPT_COMMENT1) == OPTION_NOT_SUPPORTED) {
1356 | /* Not section comments. */
1357 | return false0;
1358 | }
1359 | }
1360 | if (required_comment_types & WTAP_COMMENT_PER_INTERFACE0x00000002) {
1361 | if (wtap_file_type_subtype_supports_option(ft,
1362 | WTAP_BLOCK_IF_ID_AND_INFO, OPT_COMMENT1) == OPTION_NOT_SUPPORTED) {
1363 | /* Not interface comments. */
1364 | return false0;
1365 | }
1366 | }
1367 | if (required_comment_types & WTAP_COMMENT_PER_PACKET0x00000004) {
1368 | if (wtap_file_type_subtype_supports_option(ft,
1369 | WTAP_BLOCK_PACKET, OPT_COMMENT1) == OPTION_NOT_SUPPORTED) {
1370 | /* Not packet comments. */
1371 | return false0;
1372 | }
1373 | }
1374 |
1375 | /*
1376 | * Yes. Is the required per-file encapsulation type supported?
1377 | * This might be WTAP_ENCAP_PER_PACKET.
1378 | */
1379 | if (!wtap_dump_can_write_encap(ft, wtap_dump_required_file_encap_type(file_encaps))) {
1380 | /* No. */
1381 | return false0;
1382 | }
1383 |
1384 | /*
1385 | * Yes. Are all the individual encapsulation types supported?
1386 | */
1387 | for (i = 0; i < file_encaps->len; i++) {
1388 | if (!wtap_dump_can_write_encap(ft,
1389 | g_array_index(file_encaps, int, i)(((int*) (void *) (file_encaps)->data) [(i)]))) {
1390 | /* No - one of them isn't. */
1391 | return false0;
1392 | }
1393 | }
1394 |
1395 | /* Yes - we're OK. */
1396 | return true1;
1397 | }
1398 |
1399 | /*
1400 | * Return true if we can write a file with the given GArray of
1401 | * encapsulation types and the given bitmask of comment types.
1402 | */
1403 | bool_Bool
1404 | wtap_dump_can_write(const GArray *file_encaps, uint32_t required_comment_types)
1405 | {
1406 | int ft;
1407 |
1408 | for (ft = 0; ft < (int)file_type_subtype_table_arr->len; ft++) {
1409 | /* To save a file with Wiretap, Wiretap has to handle that format,
1410 | * and its code to handle that format must be able to write a file
1411 | * with this file's encapsulation types.
1412 | */
1413 | if (wtap_dump_can_write_format(ft, file_encaps, required_comment_types)) {
1414 | /* OK, we can write it out in this type. */
1415 | return true1;
1416 | }
1417 | }
1418 |
1419 | /* No, we couldn't save it in any format. */
1420 | return false0;
1421 | }
1422 |
1423 | /*
1424 | * Sort by file type/subtype name.
1425 | */
1426 | static int
1427 | compare_file_type_subtypes_by_name(const void *a, const void *b)
1428 | {
1429 | int file_type_subtype_a = *(const int *)a;
1430 | int file_type_subtype_b = *(const int *)b;
1431 |
1432 | return strcmp(wtap_file_type_subtype_name(file_type_subtype_a),
1433 | wtap_file_type_subtype_name(file_type_subtype_b));
1434 | }
1435 |
1436 | /*
1437 | * Sort by file type/subtype description.
1438 | */
1439 | static int
1440 | compare_file_type_subtypes_by_description(const void *a, const void *b)
1441 | {
1442 | int file_type_subtype_a = *(const int *)a;
1443 | int file_type_subtype_b = *(const int *)b;
1444 |
1445 | return strcmp(wtap_file_type_subtype_description(file_type_subtype_a),
1446 | wtap_file_type_subtype_description(file_type_subtype_b));
1447 | }
1448 |
1449 | /*
1450 | * Get a GArray of file type/subtype values for file types/subtypes
1451 | * that can be used to save a file of a given type/subtype with a given
1452 | * GArray of encapsulation types and the given bitmask of comment types.
1453 | */
1454 | GArray *
1455 | wtap_get_savable_file_types_subtypes_for_file(int file_type_subtype,
1456 | const GArray *file_encaps, uint32_t required_comment_types,
1457 | ft_sort_order sort_order)
1458 | {
1459 | GArray *savable_file_types_subtypes;
1460 | int ft;
1461 | int default_file_type_subtype = -1;
1462 | int other_file_type_subtype = -1;
1463 |
1464 | /* Can we save this file in its own file type/subtype? */
1465 | if (wtap_dump_can_write_format(file_type_subtype, file_encaps,
1466 | required_comment_types)) {
1467 | /* Yes - make that the default file type/subtype. */
1468 | default_file_type_subtype = file_type_subtype;
1469 | } else if (wtap_dump_can_write_format(pcap_file_type_subtype,
1470 | file_encaps,
1471 | required_comment_types)) {
1472 | /*
1473 | * No, but we can write it as a pcap file; make that
1474 | * the default file type/subtype.
1475 | */
1476 | default_file_type_subtype = pcap_file_type_subtype;
1477 | } else if (wtap_dump_can_write_format(pcapng_file_type_subtype,
1478 | file_encaps,
1479 | required_comment_types)) {
1480 | /*
1481 | * No, but we can write it as a pcapng file; make that
1482 | * the default file type/subtype.
1483 | */
1484 | default_file_type_subtype = pcapng_file_type_subtype;
1485 | } else {
1486 | /* OK, find the first file type/subtype we *can* save it as. */
1487 | default_file_type_subtype = -1;
1488 | for (ft = 0; ft < (int)file_type_subtype_table_arr->len; ft++) {
1489 | if (wtap_dump_can_write_format(ft, file_encaps,
1490 | required_comment_types)) {
1491 | /* OK, got it. */
1492 | default_file_type_subtype = ft;
1493 | break;
1494 | }
1495 | }
1496 | }
1497 |
1498 | if (default_file_type_subtype == -1) {
1499 | /* We don't support writing this file as any file type/subtype. */
1500 | return NULL((void*)0);
1501 | }
1502 |
1503 | /*
1504 | * If the default is pcap, put pcapng right after it if we can
1505 | * also write it in pcapng format; otherwise, if the default is
1506 | * pcapng, put pcap right after it if we can also write it in
1507 | * pcap format.
1508 | */
1509 | if (default_file_type_subtype == pcap_file_type_subtype) {
1510 | if (wtap_dump_can_write_format(pcapng_file_type_subtype,
1511 | file_encaps,
1512 | required_comment_types))
1513 | other_file_type_subtype = pcapng_file_type_subtype;
1514 | } else if (default_file_type_subtype == pcapng_file_type_subtype) {
1515 | if (wtap_dump_can_write_format(pcap_file_type_subtype,
1516 | file_encaps,
1517 | required_comment_types))
1518 | other_file_type_subtype = pcap_file_type_subtype;
1519 | }
1520 |
1521 | /* Allocate the array. */
1522 | savable_file_types_subtypes = g_array_new(false0, false0,
1523 | sizeof (int));
1524 |
1525 | /*
1526 | * First, add the types we don't want to force to the
1527 | * beginning of the list.
1528 | */
1529 | for (ft = 0; ft < (int)file_type_subtype_table_arr->len; ft++) {
1530 | if (ft == default_file_type_subtype ||
1531 | ft == other_file_type_subtype)
1532 | continue; /* we will done this one later */
1533 | if (wtap_dump_can_write_format(ft, file_encaps,
1534 | required_comment_types)) {
1535 | /* OK, we can write it out in this type. */
1536 | g_array_append_val(savable_file_types_subtypes, ft)g_array_append_vals (savable_file_types_subtypes, &(ft), 1 );
1537 | }
1538 | }
1539 |
1540 | /* Now, sort the list. */
1541 | g_array_sort(savable_file_types_subtypes,
1542 | (sort_order == FT_SORT_BY_NAME) ? compare_file_type_subtypes_by_name :
1543 | compare_file_type_subtypes_by_description);
1544 |
1545 | /*
1546 | * If we have a type/subtype to put above the default one,
1547 | * do so.
1548 | *
1549 | * We put this type at the beginning before putting the
1550 | * default there, so the default is at the top.
1551 | */
1552 | if (other_file_type_subtype != -1)
1553 | g_array_prepend_val(savable_file_types_subtypes,g_array_prepend_vals (savable_file_types_subtypes, &(other_file_type_subtype ), 1)
1554 | other_file_type_subtype)g_array_prepend_vals (savable_file_types_subtypes, &(other_file_type_subtype ), 1);
1555 |
1556 | /* Put the default file type/subtype first in the list. */
1557 | g_array_prepend_val(savable_file_types_subtypes,g_array_prepend_vals (savable_file_types_subtypes, &(default_file_type_subtype ), 1)
1558 | default_file_type_subtype)g_array_prepend_vals (savable_file_types_subtypes, &(default_file_type_subtype ), 1);
1559 |
1560 | return savable_file_types_subtypes;
1561 | }
1562 |
1563 | /*
1564 | * Get a GArray of all writable file type/subtype values.
1565 | */
1566 | GArray *
1567 | wtap_get_writable_file_types_subtypes(ft_sort_order sort_order)
1568 | {
1569 | GArray *writable_file_types_subtypes;
1570 | int ft;
1571 |
1572 | /*
1573 | * Allocate the array.
1574 | * Pre-allocate room enough for all types.
1575 | * XXX - that's overkill; just scan the table to find all the
1576 | * writable types and count them.
1577 | */
1578 | writable_file_types_subtypes = g_array_sized_new(false0, false0,
1579 | sizeof (int), file_type_subtype_table_arr->len);
1580 |
1581 | /*
1582 | * First, add the types we don't want to force to the
1583 | * beginning of the list.
1584 | */
1585 | for (ft = 0; ft < (int)file_type_subtype_table_arr->len; ft++) {
1586 | if (ft == pcap_file_type_subtype ||
1587 | ft == pcapng_file_type_subtype)
1588 | continue; /* we've already done these two */
1589 | if (wtap_dump_can_open(ft)) {
1590 | /* OK, we can write this type. */
1591 | g_array_append_val(writable_file_types_subtypes, ft)g_array_append_vals (writable_file_types_subtypes, &(ft), 1);
1592 | }
1593 | }
1594 |
1595 | /* Now, sort the list. */
1596 | g_array_sort(writable_file_types_subtypes,
1597 | (sort_order == FT_SORT_BY_NAME) ? compare_file_type_subtypes_by_name :
1598 | compare_file_type_subtypes_by_description);
1599 |
1600 | /*
1601 | * Now, put pcap and pcapng at the beginning, as they're
1602 | * our "native" formats. Put pcapng there first, and
1603 | * pcap before it.
1604 | */
1605 | if (pcapng_file_type_subtype != -1 &&
1606 | wtap_dump_can_open(pcapng_file_type_subtype)) {
1607 | /*
1608 | * We can write pcapng. (If we can't, that's a huge
1609 | * mistake.)
1610 | */
1611 | g_array_prepend_val(writable_file_types_subtypes,g_array_prepend_vals (writable_file_types_subtypes, &(pcapng_file_type_subtype ), 1)
1612 | pcapng_file_type_subtype)g_array_prepend_vals (writable_file_types_subtypes, &(pcapng_file_type_subtype ), 1);
1613 | }
1614 | if (pcap_file_type_subtype != -1 &&
1615 | wtap_dump_can_open(pcap_file_type_subtype)) {
1616 | /*
1617 | * We can write pcap. (If we can't, that's a huge
1618 | * mistake.)
1619 | */
1620 | g_array_prepend_val(writable_file_types_subtypes,g_array_prepend_vals (writable_file_types_subtypes, &(pcap_file_type_subtype ), 1)
1621 | pcap_file_type_subtype)g_array_prepend_vals (writable_file_types_subtypes, &(pcap_file_type_subtype ), 1);
1622 | }
1623 |
1624 | return writable_file_types_subtypes;
1625 | }
1626 |
1627 | /*
1628 | * String describing the file type/subtype.
1629 | */
1630 | const char *
1631 | wtap_file_type_subtype_description(int file_type_subtype)
1632 | {
1633 | if (file_type_subtype < 0 ||
1634 | file_type_subtype >= (int)file_type_subtype_table_arr->len)
1635 | return NULL((void*)0);
1636 | else
1637 | return file_type_subtype_table[file_type_subtype].description;
1638 | }
1639 |
1640 | /*
1641 | * Name to use in, say, a command-line flag specifying the type/subtype.
1642 | */
1643 | const char *
1644 | wtap_file_type_subtype_name(int file_type_subtype)
1645 | {
1646 | if (file_type_subtype < 0 ||
1647 | file_type_subtype >= (int)file_type_subtype_table_arr->len)
1648 | return NULL((void*)0);
1649 | else
1650 | return file_type_subtype_table[file_type_subtype].name;
1651 | }
1652 |
1653 | /*
1654 | * Register a backwards-compatibility name.
1655 | */
1656 | void
1657 | wtap_register_compatibility_file_subtype_name(const char *old_name,
1658 | const char *new_name)
1659 | {
1660 | g_hash_table_insert(type_subtype_name_map, g_strdup(old_name)g_strdup_inline (old_name),
1661 | g_strdup(new_name)g_strdup_inline (new_name));
1662 | }
1663 |
1664 | /*
1665 | * Translate a name to a capture file type/subtype.
1666 | */
1667 | int
1668 | wtap_name_to_file_type_subtype(const char *name)
1669 | {
1670 | char *new_name;
1671 | int file_type_subtype;
1672 |
1673 | /*
1674 | * Is this name a backwards-compatibility name?
1675 | */
1676 | new_name = (char *)g_hash_table_lookup(type_subtype_name_map,
1677 | (void *)name);
1678 | if (new_name != NULL((void*)0)) {
1679 | /*
1680 | * Yes, and new_name is the name to which it should
1681 | * be mapped.
1682 | */
1683 | name = new_name;
1684 | }
1685 | for (file_type_subtype = 0;
1686 | file_type_subtype < (int)file_type_subtype_table_arr->len;
1687 | file_type_subtype++) {
1688 | if (file_type_subtype_table[file_type_subtype].name != NULL((void*)0) &&
1689 | strcmp(name, file_type_subtype_table[file_type_subtype].name) == 0)
1690 | return file_type_subtype;
1691 | }
1692 |
1693 | return -1; /* no such file type, or we can't write it */
1694 | }
1695 |
1696 | /*
1697 | * Provide the file type/subtype for pcap.
1698 | */
1699 | int
1700 | wtap_pcap_file_type_subtype(void)
1701 | {
1702 | /*
1703 | * Make sure pcap was registered as a file type/subtype;
1704 | * it's one of our "native" formats.
1705 | */
1706 | ws_assert(pcap_file_type_subtype != -1)do { if ((1) && !(pcap_file_type_subtype != -1)) ws_log_fatal_full ("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c", 1706, __func__ , "assertion failed: %s", "pcap_file_type_subtype != -1"); } while (0);
1707 | return pcap_file_type_subtype;
1708 | }
1709 |
1710 | /*
1711 | * Provide the file type/subtype for nanosecond-resolution pcap.
1712 | */
1713 | int
1714 | wtap_pcap_nsec_file_type_subtype(void)
1715 | {
1716 | /*
1717 | * Make sure nanosecond-resolution pcap was registered
1718 | * as a file type/subtype; it's one of our "native" formats.
1719 | */
1720 | ws_assert(pcap_nsec_file_type_subtype != -1)do { if ((1) && !(pcap_nsec_file_type_subtype != -1)) ws_log_fatal_full("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c" , 1720, __func__, "assertion failed: %s", "pcap_nsec_file_type_subtype != -1" ); } while (0);
1721 | return pcap_nsec_file_type_subtype;
1722 | }
1723 |
1724 | /*
1725 | * Provide the file type/subtype for pcapng.
1726 | */
1727 | int
1728 | wtap_pcapng_file_type_subtype(void)
1729 | {
1730 | /*
1731 | * Make sure pcapng was registered as a file type/subtype;
1732 | * it's one of our "native" formats.
1733 | */
1734 | ws_assert(pcapng_file_type_subtype != -1)do { if ((1) && !(pcapng_file_type_subtype != -1)) ws_log_fatal_full ("Wiretap", LOG_LEVEL_ERROR, "wiretap/file_access.c", 1734, __func__ , "assertion failed: %s", "pcapng_file_type_subtype != -1"); } while (0);
1735 | return pcapng_file_type_subtype;
1736 | }
1737 |
1738 | /*
1739 | * Determine if a file type/subtype can write a block of the given type.
1740 | */
1741 | block_support_t
1742 | wtap_file_type_subtype_supports_block(int file_type_subtype,
1743 | wtap_block_type_t type)
1744 | {
1745 | size_t num_supported_blocks;
1746 | const struct supported_block_type *supported_blocks;
1747 |
1748 | if (file_type_subtype < 0 ||
1749 | file_type_subtype >= (int)file_type_subtype_table_arr->len) {
1750 | /*
1751 | * There's no such file type, so it can't support any
1752 | * blocks.
1753 | */
1754 | return BLOCK_NOT_SUPPORTED;
1755 | }
1756 |
1757 | num_supported_blocks = file_type_subtype_table[file_type_subtype].num_supported_blocks;
1758 | supported_blocks = file_type_subtype_table[file_type_subtype].supported_blocks;
1759 |
1760 | for (size_t block_idx = 0; block_idx < num_supported_blocks;
1761 | block_idx++) {
1762 | if (supported_blocks[block_idx].type == type)
1763 | return supported_blocks[block_idx].support;
1764 | }
1765 |
1766 | /*
1767 | * Not found, which means not supported.
1768 | */
1769 | return BLOCK_NOT_SUPPORTED;
1770 | }
1771 |
1772 | /*
1773 | * Determine if a file type/subtype, when writing a block of the given type,
1774 | * can support adding the given option to the block.
1775 | */
1776 | option_support_t
1777 | wtap_file_type_subtype_supports_option(int file_type_subtype,
1778 | wtap_block_type_t type, unsigned option)
1779 | {
1780 | size_t num_supported_blocks;
1781 | const struct supported_block_type *supported_blocks;
1782 |
1783 | if (file_type_subtype < 0 ||
1784 | file_type_subtype >= (int)file_type_subtype_table_arr->len) {
1785 | /*
1786 | * There's no such file type, so it can't support any
1787 | * blocks, and thus can't support any options.
1788 | */
1789 | return OPTION_NOT_SUPPORTED;
1790 | }
1791 |
1792 | num_supported_blocks = file_type_subtype_table[file_type_subtype].num_supported_blocks;
1793 | supported_blocks = file_type_subtype_table[file_type_subtype].supported_blocks;
1794 |
1795 | for (size_t block_idx = 0; block_idx < num_supported_blocks;
1796 | block_idx++) {
1797 | if (supported_blocks[block_idx].type == type) {
1798 | /*
1799 | * OK, that block is known.
1800 | * Is it supported?
1801 | */
1802 | if (supported_blocks[block_idx].support == BLOCK_NOT_SUPPORTED) {
1803 | /*
1804 | * No, so clearly the option isn't
1805 | * supported in that block.
1806 | */
1807 | return OPTION_NOT_SUPPORTED;
1808 | }
1809 |
1810 | /*
1811 | * Yes, so check the options.
1812 | */
1813 | size_t num_supported_options;
1814 | const struct supported_option_type *supported_options;
1815 |
1816 | num_supported_options = supported_blocks[block_idx].num_supported_options;
1817 | supported_options = supported_blocks[block_idx].supported_options;
1818 | for (size_t opt_idx = 0; opt_idx < num_supported_options;
1819 | opt_idx++) {
1820 | if (supported_options[opt_idx].opt == option)
1821 | return supported_options[opt_idx].support;
1822 | }
1823 |
1824 | /*
1825 | * Not found, which means not supported.
1826 | */
1827 | return OPTION_NOT_SUPPORTED;
1828 | }
1829 | }
1830 |
1831 | /*
1832 | * The block type wasn't found, which means it's not supported,
1833 | * which means the option isn't supported in that block.
1834 | */
1835 | return OPTION_NOT_SUPPORTED;
1836 | }
1837 |
1838 | static GSList *
1839 | add_extensions_for_file_type_subtype(int file_type_subtype, GSList *extensions,
1840 | GSList *compression_type_extensions)
1841 | {
1842 | char **extensions_set, **extensionp;
1843 | char *extension;
1844 |
1845 | if (file_type_subtype < 0 ||
1846 | file_type_subtype >= (int)file_type_subtype_table_arr->len) {
1847 | /*
1848 | * There's no such file type, so it has no extensions
1849 | * to add.
1850 | */
1851 | return extensions;
1852 | }
1853 |
1854 | /*
1855 | * Add the default extension, and all of the compressed variants
1856 | * from the list of compressed-file extensions, if there is a
1857 | * default extension.
1858 | */
1859 | if (file_type_subtype_table[file_type_subtype].default_file_extension != NULL((void*)0)) {
1860 | extensions = add_extensions(extensions,
1861 | file_type_subtype_table[file_type_subtype].default_file_extension,
1862 | compression_type_extensions);
1863 | }
1864 |
1865 | if (file_type_subtype_table[file_type_subtype].additional_file_extensions != NULL((void*)0)) {
1866 | /*
1867 | * We have additional extensions; add them.
1868 | *
1869 | * First, split the extension-list string into a set of
1870 | * extensions.
1871 | */
1872 | extensions_set = g_strsplit(file_type_subtype_table[file_type_subtype].additional_file_extensions,
1873 | ";", 0);
1874 |
1875 | /*
1876 | * Add each of those extensions to the list.
1877 | */
1878 | for (extensionp = extensions_set; *extensionp != NULL((void*)0);
1879 | extensionp++) {
1880 | extension = *extensionp;
1881 |
1882 | /*
1883 | * Add the extension, and all compressed variants
1884 | * of it if requested.
1885 | */
1886 | extensions = add_extensions(extensions, extension,
1887 | compression_type_extensions);
1888 | }
1889 |
1890 | g_strfreev(extensions_set);
1891 | }
1892 | return extensions;
1893 | }
1894 |
1895 | /* Return a list of file extensions that are used by the specified file
1896 | * type/subtype.
1897 | *
1898 | * If include_compressed is true, the list will include compressed
1899 | * extensions, e.g. not just "pcap" but also "pcap.gz" if we can read
1900 | * gzipped files.
1901 | *
1902 | * All strings in the list are allocated with g_malloc() and must be freed
1903 | * with g_free().
1904 | */
1905 | GSList *
1906 | wtap_get_file_extensions_list(int file_type_subtype, bool_Bool include_compressed)
1907 | {
1908 | GSList *extensions, *compression_type_extensions;
1909 |
1910 | if (file_type_subtype < 0 ||
1911 | file_type_subtype >= (int)file_type_subtype_table_arr->len)
1912 | return NULL((void*)0); /* not a valid file type */
1913 |
1914 | if (file_type_subtype_table[file_type_subtype].default_file_extension == NULL((void*)0))
1915 | return NULL((void*)0); /* valid, but no extensions known */
1916 |
1917 | extensions = NULL((void*)0); /* empty list, to start with */
1918 |
1919 | /*
1920 | * Add all this file type's extensions, with compressed
1921 | * variants if include_compressed is true.
1922 | */
1923 | if (include_compressed) {
1924 | /*
1925 | * Get compression-type extensions, if any.
1926 | */
1927 | compression_type_extensions = ws_get_all_compression_type_extensions_list();
1928 | } else {
1929 | /*
1930 | * We don't want the compressed file extensions.
1931 | */
1932 | compression_type_extensions = NULL((void*)0);
1933 | }
1934 | extensions = add_extensions_for_file_type_subtype(file_type_subtype, extensions,
1935 | compression_type_extensions);
1936 |
1937 | g_slist_free(compression_type_extensions);
1938 |
1939 | return g_slist_reverse(extensions);
1940 | }
1941 |
1942 | /* Return a list of all extensions that are used by all capture file
1943 | * types, including compressed extensions, e.g. not just "pcap" but
1944 | * also "pcap.gz" if we can read gzipped files.
1945 | *
1946 | * "Capture files" means "include file types that correspond to
1947 | * collections of network packets, but not file types that
1948 | * store data that just happens to be transported over protocols
1949 | * such as HTTP but that aren't collections of network packets",
1950 | * so that it could be used for "All Capture Files" without picking
1951 | * up JPEG files or files such as that - those aren't capture files,
1952 | * and we *do* have them listed in the long list of individual file
1953 | * types, so omitting them from "All Capture Files" is the right
1954 | * thing to do.
1955 | *
1956 | * All strings in the list are allocated with g_malloc() and must be freed
1957 | * with g_free().
1958 | *
1959 | * This is used to generate a list of extensions to look for if the user
1960 | * chooses "All Capture Files" in a file open dialog.
1961 | */
1962 | GSList *
1963 | wtap_get_all_capture_file_extensions_list(void)
1964 | {
1965 | GSList *extensions, *compression_type_extensions;
1966 | unsigned int i;
1967 |
1968 | extensions = NULL((void*)0); /* empty list, to start with */
1969 |
1970 | /*
1971 | * Get compression-type extensions, if any.
1972 | */
1973 | compression_type_extensions = ws_get_all_compression_type_extensions_list();
1974 |
1975 | for (i = 0; i < file_type_extensions_arr->len; i++) {
1976 | /*
1977 | * Is this a capture file, rather than one of the
1978 | * other random file types we can read?
1979 | */
1980 | if (file_type_extensions[i].is_capture_file) {
1981 | /*
1982 | * Yes. Add all this file extension type's
1983 | * extensions, with compressed variants.
1984 | */
1985 | extensions = add_extensions_for_file_extensions_type(i,
1986 | extensions, compression_type_extensions);
1987 | }
1988 | }
1989 |
1990 | g_slist_free(compression_type_extensions);
1991 |
1992 | return g_slist_reverse(extensions);
1993 | }
1994 |
1995 | /* Return a list of all extensions that are used by all file types that
1996 | * we can read, including compressed extensions, e.g. not just "pcap" but
1997 | * also "pcap.gz" if we can read gzipped files.
1998 | *
1999 | * "File type" means "include file types that correspond to collections
2000 | * of network packets, as well as file types that store data that just
2001 | * happens to be transported over protocols such as HTTP but that aren't
2002 | * collections of network packets, and plain text files".
2003 | *
2004 | * All strings in the list are allocated with g_malloc() and must be freed
2005 | * with g_free().
2006 | *
2007 | * This is used to get the "base name" for a file, by stripping off
2008 | * compressed-file extensions and extensions that correspond to file
2009 | * types that we know about.
2010 | */
2011 | GSList *
2012 | wtap_get_all_file_extensions_list(void)
2013 | {
2014 | GSList *extensions, *compression_type_extensions;
2015 |
2016 | extensions = NULL((void*)0); /* empty list, to start with */
2017 |
2018 | /*
2019 | * Get compression-type extensions, if any.
2020 | */
2021 | compression_type_extensions = ws_get_all_compression_type_extensions_list();
2022 |
2023 | for (int ft = 0; ft < (int)file_type_subtype_table_arr->len; ft++) {
2024 | extensions = add_extensions_for_file_type_subtype(ft, extensions,
2025 | compression_type_extensions);
2026 | }
2027 |
2028 | g_slist_free(compression_type_extensions);
2029 |
2030 | return g_slist_reverse(extensions);
2031 | }
2032 |
2033 | /*
2034 | * Free a list returned by wtap_get_file_extension_type_extensions(),
2035 | * wtap_get_all_capture_file_extensions_list, wtap_get_file_extensions_list(),
2036 | * or wtap_get_all_file_extensions_list().
2037 | */
2038 | void
2039 | wtap_free_extensions_list(GSList *extensions)
2040 | {
2041 | GSList *extension;
2042 |
2043 | for (extension = extensions; extension != NULL((void*)0);
2044 | extension = g_slist_next(extension)((extension) ? (((GSList *)(extension))->next) : ((void*)0 ))) {
2045 | g_free(extension->data);
2046 | }
2047 | g_slist_free(extensions);
2048 | }
2049 |
2050 | /*
2051 | * Return the default file extension to use with the specified file type
2052 | * and subtype; that's just the extension, without any ".".
2053 | */
2054 | const char *
2055 | wtap_default_file_extension(int file_type_subtype)
2056 | {
2057 | if (file_type_subtype < 0 ||
2058 | file_type_subtype >= (int)file_type_subtype_table_arr->len)
2059 | return NULL((void*)0);
2060 | else
2061 | return file_type_subtype_table[file_type_subtype].default_file_extension;
2062 | }
2063 |
2064 | /*
2065 | * Return whether we know how to write the specified file type.
2066 | */
2067 | bool_Bool
2068 | wtap_dump_can_open(int file_type_subtype)
2069 | {
2070 | if (file_type_subtype < 0 ||
2071 | file_type_subtype >= (int)file_type_subtype_table_arr->len ||
2072 | file_type_subtype_table[file_type_subtype].dump_open == NULL((void*)0))
2073 | return false0;
2074 |
2075 | return true1;
2076 | }
2077 |
2078 | /*
2079 | * Return whether we know how to write a compressed file of the specified
2080 | * file type.
2081 | */
2082 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG) || defined (HAVE_LZ4FRAME_H1)
2083 | bool_Bool
2084 | wtap_dump_can_compress(int file_type_subtype)
2085 | {
2086 | /*
2087 | * If this is an unknown file type, or if we have to
2088 | * seek when writing out a file with this file type,
2089 | * return false.
2090 | */
2091 | if (file_type_subtype < 0 ||
2092 | file_type_subtype >= (int)file_type_subtype_table_arr->len ||
2093 | file_type_subtype_table[file_type_subtype].writing_must_seek)
2094 | return false0;
2095 |
2096 | return true1;
2097 | }
2098 | #else
2099 | bool_Bool
2100 | wtap_dump_can_compress(int file_type_subtype _U___attribute__((unused)))
2101 | {
2102 | return false0;
2103 | }
2104 | #endif
2105 |
2106 | static bool_Bool wtap_dump_open_finish(wtap_dumper *wdh, int *err,
2107 | char **err_info);
2108 |
2109 | static WFILE_T wtap_dump_file_open(const wtap_dumper *wdh, const char *filename);
2110 | static WFILE_T wtap_dump_file_fdopen(const wtap_dumper *wdh, int fd);
2111 | static int wtap_dump_file_close(wtap_dumper *wdh);
2112 | static bool_Bool wtap_dump_fix_idb(wtap_dumper *wdh, wtap_block_t idb, int *err);
2113 |
2114 | static wtap_dumper *
2115 | wtap_dump_init_dumper(int file_type_subtype, ws_compression_type compression_type,
2116 | const wtap_dump_params *params, int *err)
2117 | {
2118 | wtap_dumper *wdh;
2119 | wtap_block_t descr, file_int_data;
2120 | wtapng_if_descr_mandatory_t *descr_mand, *file_int_data_mand;
2121 | GArray *interfaces = params->idb_inf ? params->idb_inf->interface_data : NULL((void*)0);
4 | ← | Assuming field 'idb_inf' is non-null | →
5 | ← | '?' condition is true | →
2122 |
2123 | /* Can we write files of this file type/subtype?
2124 | *
2125 | * This will fail if file_type_subtype isn't a valid
2126 | * file type/subtype value, so, if it doesn't fail,
2127 | * we know file_type_subtype is within the bounds of
2128 | * the table of file types/subtypes.
2129 | */
2130 | if (!wtap_dump_can_open(file_type_subtype)) {
6 | ← | Taking false branch | →
2131 | /* Invalid type, or type we don't know how to write. */
2132 | *err = WTAP_ERR_UNWRITABLE_FILE_TYPE-7;
2133 | return NULL((void*)0);
2134 | }
2135 |
2136 | /* OK, we know how to write that file type/subtype; can we write
2137 | * the specified encapsulation type in that file type/subtype?
2138 | */
2139 | *err = (*file_type_subtype_table[file_type_subtype].can_write_encap)(params->encap);
2140 | /* if the err said to check wslua's can_write_encap, try that */
2141 | if (*err == WTAP_ERR_CHECK_WSLUA-23
7 | ← | Assuming the condition is false | →
2142 | && file_type_subtype_table[file_type_subtype].wslua_info != NULL((void*)0)
2143 | && file_type_subtype_table[file_type_subtype].wslua_info->wslua_can_write_encap != NULL((void*)0)) {
2144 |
2145 | *err = (*file_type_subtype_table[file_type_subtype].wslua_info->wslua_can_write_encap)(params->encap, file_type_subtype_table[file_type_subtype].wslua_info->wslua_data);
2146 | }
2147 |
2148 | if (*err != 0) {
8 | ← | Assuming the condition is false | →
2149 | /* No, we can't. */
2150 | return NULL((void*)0);
2151 | }
2152 |
2153 | /* Check whether we can open a capture file with that file type
2154 | * and that encapsulation, and, if the compression type isn't
2155 | * "uncompressed", whether we can write a *compressed* file
2156 | * of that file type.
2157 | * If we're doing compression, can this file type/subtype be
2158 | written in compressed form?
2159 | *
2160 | * (The particular type doesn't matter - if the file can't
2161 | * be written 100% sequentially, we can't compress it,
2162 | * because we can't go back and overwrite something we've
2163 | * already written.
2164 | */
2165 | if (compression_type != WS_FILE_UNCOMPRESSED &&
9 | ← | Assuming 'compression_type' is equal to WS_FILE_UNCOMPRESSED | →
2166 | !wtap_dump_can_compress(file_type_subtype)) {
2167 | *err = WTAP_ERR_COMPRESSION_NOT_SUPPORTED-17;
2168 | return NULL((void*)0);
2169 | }
2170 |
2171 | /* Allocate a data structure for the output stream. */
2172 | wdh = g_new0(wtap_dumper, 1)((wtap_dumper *) g_malloc0_n ((1), sizeof (wtap_dumper)));
10 | ← | Memory is allocated | →
2173 | if (wdh == NULL((void*)0)) {
11 | ← | Assuming 'wdh' is not equal to NULL | →
12 | ← | Taking false branch | →
2174 | *err = errno(*__errno_location ());
2175 | return NULL((void*)0);
2176 | }
2177 |
2178 | wdh->file_type_subtype = file_type_subtype;
2179 | wdh->snaplen = params->snaplen;
2180 | wdh->file_encap = params->encap;
2181 | wdh->compression_type = compression_type;
2182 | wdh->wslua_data = NULL((void*)0);
2183 | wdh->shb_iface_to_global = params->shb_iface_to_global;
2184 | wdh->interface_data = g_array_new(false0, false0, sizeof(wtap_block_t));
2185 |
2186 | /* Set Section Header Block data */
2187 | wdh->shb_hdrs = params->shb_hdrs;
2188 | /* Set Name Resolution Block data */
2189 | wdh->nrbs_growing = params->nrbs_growing;
2190 | /* Set Interface Description Block data */
2191 | if (interfaces && interfaces->len) {
13 | ← | Assuming 'interfaces' is non-null | →
14 | ← | Assuming field 'len' is not equal to 0 | →
15 | ← | Taking true branch | →
2192 | if (!params->dont_copy_idbs) { /* XXX */
16 | ← | Assuming field 'dont_copy_idbs' is false | →
17 | ← | Taking true branch | →
2193 | unsigned itf_count;
2194 |
2195 | /* Note: this memory is owned by wtap_dumper and will become
2196 | * invalid after wtap_dump_close. */
2197 | for (itf_count = 0; itf_count
17.1 | 'itf_count' is < field 'len'
< interfaces->len; itf_count++) {
18 | ← | Loop condition is true. Entering loop body | →
2198 | file_int_data = g_array_index(interfaces, wtap_block_t, itf_count)(((wtap_block_t*) (void *) (interfaces)->data) [(itf_count )]);
2199 | file_int_data_mand = (wtapng_if_descr_mandatory_t*)wtap_block_get_mandatory_data(file_int_data);
2200 | descr = wtap_block_make_copy(file_int_data);
2201 | if ((params->encap != WTAP_ENCAP_PER_PACKET-1) && (params->encap != file_int_data_mand->wtap_encap)) {
19 | ← | Assuming the condition is false | →
2202 | descr_mand = (wtapng_if_descr_mandatory_t*)wtap_block_get_mandatory_data(descr);
2203 | descr_mand->wtap_encap = params->encap;
2204 | }
2205 | if (!wtap_dump_fix_idb(wdh, descr, err)) {
20 | ← | Taking true branch | →
2206 | return NULL((void*)0);
21 | ← | Potential leak of memory pointed to by 'wdh'
2207 | }
2208 | g_array_append_val(wdh->interface_data, descr)g_array_append_vals (wdh->interface_data, &(descr), 1);
2209 | }
2210 | }
2211 | } else if (params->encap != WTAP_ENCAP_NONE-2 && params->encap != WTAP_ENCAP_PER_PACKET-1) {
2212 | /* Generate a fake IDB if we don't have one, unless the
2213 | * file encapsulation is none. (WTAP_ENCAP_NONE either
2214 | * means that there are no interfaces, or they will be
2215 | * provided later when reading the file in single-pass mode.)
2216 | *
2217 | * For WTAP_ENCAP_PER_PACKET, we'll have to generate IDBs
2218 | * from packet records as they come in. (pcapng does this now.)
2219 | *
2220 | * XXX File types should provide their own IDBs (possibly
2221 | * fake ones generated by wtap_add_generated_idb()), in
2222 | * order to support being used as inputs for mergecap where
2223 | * pcapng is the output.
2224 | */
2225 | descr = wtap_dump_params_generate_idb(params);
2226 | g_array_append_val(wdh->interface_data, descr)g_array_append_vals (wdh->interface_data, &(descr), 1);
2227 | }
2228 | /* Set Decryption Secrets Blocks */
2229 | wdh->dsbs_initial = params->dsbs_initial;
2230 | wdh->dsbs_growing = params->dsbs_growing;
2231 | /* Set Sysdig meta events */
2232 | wdh->mevs_growing = params->mevs_growing;
2233 | /* Set DPIBs */
2234 | wdh->dpibs_growing = params->dpibs_growing;
2235 | return wdh;
2236 | }
2237 |
2238 | wtap_dumper *
2239 | wtap_dump_open(const char *filename, int file_type_subtype,
2240 | ws_compression_type compression_type, const wtap_dump_params *params,
2241 | int *err, char **err_info)
2242 | {
2243 | wtap_dumper *wdh;
2244 | WFILE_T fh;
2245 |
2246 | *err = 0;
2247 | *err_info = NULL((void*)0);
2248 |
2249 | /* Allocate and initialize a data structure for the output stream. */
2250 | wdh = wtap_dump_init_dumper(file_type_subtype, compression_type, params,
2251 | err);
2252 | if (wdh == NULL((void*)0))
2253 | return NULL((void*)0);
2254 |
2255 | /* In case "fopen()" fails but doesn't set "errno", set "errno"
2256 | to a generic "the open failed" error. */
2257 | errno(*__errno_location ()) = WTAP_ERR_CANT_OPEN-6;
2258 | fh = wtap_dump_file_open(wdh, filename);
2259 | if (fh == NULL((void*)0)) {
2260 | *err = errno(*__errno_location ());
2261 | g_free(wdh);
2262 | return NULL((void*)0); /* can't create file */
2263 | }
2264 | wdh->fh = fh;
2265 |
2266 | if (!wtap_dump_open_finish(wdh, err, err_info)) {
2267 | /* Get rid of the file we created; we couldn't finish
2268 | opening it. */
2269 | wtap_dump_file_close(wdh);
2270 | ws_unlinkunlink(filename);
2271 | g_free(wdh);
2272 | return NULL((void*)0);
2273 | }
2274 | return wdh;
2275 | }
2276 |
2277 | wtap_dumper *
2278 | wtap_dump_open_tempfile(const char *tmpdir, char **filenamep, const char *pfx,
2279 | int file_type_subtype, ws_compression_type compression_type,
2280 | const wtap_dump_params *params, int *err, char **err_info)
2281 | {
2282 | int fd;
2283 | const char *ext;
2284 | char sfx[16];
2285 | wtap_dumper *wdh;
2286 | WFILE_T fh;
2287 |
2288 | /* No path name for the temporary file yet. */
2289 | *filenamep = NULL((void*)0);
2290 |
2291 | *err = 0;
2292 | *err_info = NULL((void*)0);
2293 |
2294 | /* Allocate and initialize a data structure for the output stream. */
2295 | wdh = wtap_dump_init_dumper(file_type_subtype, compression_type, params,
2296 | err);
2297 | if (wdh == NULL((void*)0))
2298 | return NULL((void*)0);
2299 |
2300 | /* Choose an appropriate suffix for the file */
2301 | ext = wtap_default_file_extension(file_type_subtype);
2302 | if (ext == NULL((void*)0))
2303 | ext = "tmp";
2304 | sfx[0] = '.';
2305 | sfx[1] = '\0';
2306 | (void) g_strlcat(sfx, ext, 16);
2307 |
2308 | /* Choose a random name for the file */
2309 | fd = create_tempfile(tmpdir, filenamep, pfx, sfx, NULL((void*)0));
2310 | if (fd == -1) {
2311 | *err = WTAP_ERR_CANT_OPEN-6;
2312 | g_free(wdh);
2313 | return NULL((void*)0); /* can't create file */
2314 | }
2315 |
2316 | /* In case "fopen()" fails but doesn't set "errno", set "errno"
2317 | to a generic "the open failed" error. */
2318 | errno(*__errno_location ()) = WTAP_ERR_CANT_OPEN-6;
2319 | fh = wtap_dump_file_fdopen(wdh, fd);
2320 | if (fh == NULL((void*)0)) {
2321 | *err = errno(*__errno_location ());
2322 | ws_closeclose(fd);
2323 | g_free(wdh);
2324 | return NULL((void*)0); /* can't create file */
2325 | }
2326 | wdh->fh = fh;
2327 |
2328 | if (!wtap_dump_open_finish(wdh, err, err_info)) {
2329 | /* Get rid of the file we created; we couldn't finish
2330 | opening it. */
2331 | wtap_dump_file_close(wdh);
2332 | ws_unlinkunlink(*filenamep);
2333 | g_free(wdh);
2334 | return NULL((void*)0);
2335 | }
2336 | return wdh;
2337 | }
2338 |
2339 | wtap_dumper *
2340 | wtap_dump_fdopen(int fd, int file_type_subtype, ws_compression_type compression_type,
2341 | const wtap_dump_params *params, int *err, char **err_info)
2342 | {
2343 | wtap_dumper *wdh;
2344 | WFILE_T fh;
2345 |
2346 | *err = 0;
2347 | *err_info = NULL((void*)0);
2348 |
2349 | /* Allocate and initialize a data structure for the output stream. */
2350 | wdh = wtap_dump_init_dumper(file_type_subtype, compression_type, params,
3 | ← | Calling 'wtap_dump_init_dumper' | →
2351 | err);
2352 | if (wdh == NULL((void*)0))
2353 | return NULL((void*)0);
2354 |
2355 | /* In case "fopen()" fails but doesn't set "errno", set "errno"
2356 | to a generic "the open failed" error. */
2357 | errno(*__errno_location ()) = WTAP_ERR_CANT_OPEN-6;
2358 | fh = wtap_dump_file_fdopen(wdh, fd);
2359 | if (fh == NULL((void*)0)) {
2360 | *err = errno(*__errno_location ());
2361 | g_free(wdh);
2362 | return NULL((void*)0); /* can't create standard I/O stream */
2363 | }
2364 | wdh->fh = fh;
2365 |
2366 | if (!wtap_dump_open_finish(wdh, err, err_info)) {
2367 | wtap_dump_file_close(wdh);
2368 | g_free(wdh);
2369 | return NULL((void*)0);
2370 | }
2371 | return wdh;
2372 | }
2373 |
2374 | wtap_dumper *
2375 | wtap_dump_open_stdout(int file_type_subtype, ws_compression_type compression_type,
2376 | const wtap_dump_params *params, int *err, char **err_info)
2377 | {
2378 | int new_fd;
2379 | wtap_dumper *wdh;
2380 |
2381 | /*
2382 | * Duplicate the file descriptor, so that we can close the
2383 | * wtap_dumper handle the same way we close any other
2384 | * wtap_dumper handle, without closing the standard output.
2385 | */
2386 | new_fd = ws_dupdup(1);
2387 | if (new_fd == -1) {
1 | Taking false branch | →
2388 | /* dup failed */
2389 | *err = errno(*__errno_location ());
2390 | return NULL((void*)0);
2391 | }
2392 | #ifdef _WIN32
2393 | /*
2394 | * Put the new descriptor into binary mode.
2395 | *
2396 | * XXX - even if the file format we're writing is a text
2397 | * format?
2398 | */
2399 | if (_setmode(new_fd, O_BINARY0) == -1) {
2400 | /* "Should not happen" */
2401 | *err = errno(*__errno_location ());
2402 | ws_closeclose(new_fd);
2403 | return NULL((void*)0);
2404 | }
2405 | #endif
2406 |
2407 | wdh = wtap_dump_fdopen(new_fd, file_type_subtype, compression_type,
2 | ← | Calling 'wtap_dump_fdopen' | →
2408 | params, err, err_info);
2409 | if (wdh == NULL((void*)0)) {
2410 | /* Failed; close the new FD */
2411 | ws_closeclose(new_fd);
2412 | return NULL((void*)0);
2413 | }
2414 | return wdh;
2415 | }
2416 |
2417 | static bool_Bool
2418 | wtap_dump_open_finish(wtap_dumper *wdh, int *err, char **err_info)
2419 | {
2420 | int fd;
2421 | bool_Bool cant_seek;
2422 |
2423 | /* Can we do a seek on the file descriptor?
2424 | If not, note that fact. */
2425 | if (wdh->compression_type != WS_FILE_UNCOMPRESSED) {
2426 | cant_seek = true1;
2427 | } else {
2428 | fd = ws_filenofileno((FILE *)wdh->fh);
2429 | if (ws_lseek64lseek(fd, 1, SEEK_CUR1) == (off_t) -1)
2430 | cant_seek = true1;
2431 | else {
2432 | /* Undo the seek. */
2433 | ws_lseek64lseek(fd, 0, SEEK_SET0);
2434 | cant_seek = false0;
2435 | }
2436 | }
2437 |
2438 | /* If this file type requires seeking, and we can't seek, fail. */
2439 | if (file_type_subtype_table[wdh->file_type_subtype].writing_must_seek && cant_seek) {
2440 | *err = WTAP_ERR_CANT_WRITE_TO_PIPE-5;
2441 | return false0;
2442 | }
2443 |
2444 | /* Set wdh with wslua data if any - this is how we pass the data
2445 | * to the file writer.
2446 | */
2447 | if (file_type_subtype_table[wdh->file_type_subtype].wslua_info)
2448 | wdh->wslua_data = file_type_subtype_table[wdh->file_type_subtype].wslua_info->wslua_data;
2449 |
2450 | /* Now try to open the file for writing. */
2451 | if (!(*file_type_subtype_table[wdh->file_type_subtype].dump_open)(wdh, err,
2452 | err_info)) {
2453 | return false0;
2454 | }
2455 |
2456 | return true1; /* success! */
2457 | }
2458 |
2459 | /* XXX - Temporary hack to deal with nstime_t, and thus wtap_rec and libwiretap
2460 | * in general, not storing precision greater than nanoseconds yet. Despite
2461 | * whatever precision an IDB claims, we can't write finer than nanosecond.
2462 | * Eventually this should be removed.
2463 | * Fix a given IDB to indicate no greater than nanosecond precision. */
2464 | static bool_Bool
2465 | wtap_dump_fix_idb(wtap_dumper *wdb _U___attribute__((unused)), wtap_block_t idb, int *err)
2466 | {
2467 | wtapng_if_descr_mandatory_t *idb_mand;
2468 | int64_t tsoffset;
2469 | idb_mand = (wtapng_if_descr_mandatory_t*)wtap_block_get_mandatory_data(idb);
2470 |
2471 | /*
2472 | * nstime_t only stores nanoseconds, so instead of claiming false
2473 | * precision, fix things up.
2474 | */
2475 | if (idb_mand->time_units_per_second > 1000000000) {
2476 | ws_warning("original time precision reduced to nanoseconds")do { if (1) { ws_log_full("Wiretap", LOG_LEVEL_WARNING, "wiretap/file_access.c" , 2476, __func__, "original time precision reduced to nanoseconds" ); } } while (0);
2477 | idb_mand->time_units_per_second = 1000000000;
2478 | switch (wtap_block_set_uint8_option_value(idb, OPT_IDB_TSRESOL9, 9)) {
2479 | case WTAP_OPTTYPE_SUCCESS:
2480 | break;
2481 | case WTAP_OPTTYPE_NOT_FOUND:
2482 | // This "should not" happen, because no if_tsresol means 6,
2483 | // and time_units_per_second should be 1000000;
2484 | if (wtap_block_add_uint8_option(idb, OPT_IDB_TSRESOL9, 9) == WTAP_OPTTYPE_SUCCESS) {
2485 | break;
2486 | }
2487 | /* FALLTHROUGH */
2488 | default:
2489 | // These "should not" happen either.
2490 | *err = WTAP_ERR_INTERNAL-21;
2491 | return false0;
2492 | }
2493 | }
2494 |
2495 | /*
2496 | * Since we're not writing more than nanosecond resolution, if_tsoffset
2497 | * isn't necessary, as anything we can store in absolute timestamps in
2498 | * Wireshark records we can write to a file without an offset (unless
2499 | * we have 32-bit time_t, but that's rare these days.) So we remove it
2500 | * here, though in the long term we should keep it.
2501 | */
2502 | if (wtap_block_get_int64_option_value(idb, OPT_IDB_TSOFFSET14, &tsoffset) == WTAP_OPTTYPE_SUCCESS) {
2503 | wtap_block_remove_option(idb, OPT_IDB_TSOFFSET14);
2504 | }
2505 |
2506 | return true1;
2507 | }
2508 |
2509 | bool_Bool
2510 | wtap_dump_add_idb(wtap_dumper *wdh, wtap_block_t idb, int *err,
2511 | char **err_info)
2512 | {
2513 | wtap_block_t idb_copy;
2514 |
2515 | if (wdh->subtype_add_idb == NULL((void*)0)) {
2516 | /* Not supported. */
2517 | *err = WTAP_ERR_UNWRITABLE_REC_TYPE-24;
2518 | *err_info = g_strdup("Adding IDBs isn't supported by this file type")g_strdup_inline ("Adding IDBs isn't supported by this file type" );
2519 | return false0;
2520 | }
2521 |
2522 | /*
2523 | * Add a copy of this IDB to our array of IDBs.
2524 | */
2525 | idb_copy = wtap_block_create(WTAP_BLOCK_IF_ID_AND_INFO);
2526 | wtap_block_copy(idb_copy, idb);
2527 | g_array_append_val(wdh->interface_data, idb_copy)g_array_append_vals (wdh->interface_data, &(idb_copy), 1);
2528 |
2529 | if (!wtap_dump_fix_idb(wdh, idb_copy, err)) {
2530 | *err_info = ws_strdup_printf("pcapng: failed to lower time resolution to nanoseconds")wmem_strdup_printf(((void*)0), "pcapng: failed to lower time resolution to nanoseconds" );
2531 | return false0;
2532 | }
2533 |
2534 | *err = 0;
2535 | *err_info = NULL((void*)0);
2536 | return (wdh->subtype_add_idb)(wdh, idb, err, err_info);
2537 | }
2538 |
2539 | bool_Bool
2540 | wtap_dump(wtap_dumper *wdh, const wtap_rec *rec, int *err, char **err_info)
2541 | {
2542 | *err = 0;
2543 | *err_info = NULL((void*)0);
2544 | return (wdh->subtype_write)(wdh, rec, err, err_info);
2545 | }
2546 |
2547 | bool_Bool
2548 | wtap_dump_flush(wtap_dumper *wdh, int *err)
2549 | {
2550 | switch (wdh->compression_type) {
2551 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG)
2552 | case WS_FILE_GZIP_COMPRESSED:
2553 | if (gzwfile_flush((GZWFILE_T)wdh->fh) == -1) {
2554 | *err = gzwfile_geterr((GZWFILE_T)wdh->fh);
2555 | return false0;
2556 | }
2557 | break;
2558 | #endif
2559 | #ifdef HAVE_LZ4FRAME_H1
2560 | case WS_FILE_LZ4_COMPRESSED:
2561 | if (lz4wfile_flush((LZ4WFILE_T)wdh->fh) == -1) {
2562 | *err = lz4wfile_geterr((LZ4WFILE_T)wdh->fh);
2563 | return false0;
2564 | }
2565 | break;
2566 | #endif /* HAVE_LZ4FRAME_H */
2567 | default:
2568 | if (fflush((FILE *)wdh->fh) == EOF(-1)) {
2569 | *err = errno(*__errno_location ());
2570 | return false0;
2571 | }
2572 | }
2573 | return true1;
2574 | }
2575 |
2576 | bool_Bool
2577 | wtap_dump_close(wtap_dumper *wdh, bool_Bool *needs_reload,
2578 | int *err, char **err_info)
2579 | {
2580 | bool_Bool ret = true1;
2581 |
2582 | *err = 0;
2583 | *err_info = NULL((void*)0);
2584 | if (wdh->subtype_finish != NULL((void*)0)) {
2585 | /* There's a finish routine for this dump stream. */
2586 | if (!(wdh->subtype_finish)(wdh, err, err_info))
2587 | ret = false0;
2588 | }
2589 | errno(*__errno_location ()) = WTAP_ERR_CANT_CLOSE-11;
2590 | if (wtap_dump_file_close(wdh) == EOF(-1)) {
2591 | if (ret) {
2592 | /* The per-format finish function succeeded,
2593 | but the stream close didn't. Save the
2594 | reason why, if our caller asked for it. */
2595 | if (err != NULL((void*)0))
2596 | *err = errno(*__errno_location ());
2597 | }
2598 | ret = false0;
2599 | }
2600 | if (needs_reload != NULL((void*)0))
2601 | *needs_reload = wdh->needs_reload;
2602 | g_free(wdh->priv);
2603 | wtap_block_array_free(wdh->interface_data);
2604 | wtap_block_array_unref(wdh->dsbs_initial);
2605 | g_free(wdh);
2606 | return ret;
2607 | }
2608 |
2609 | int
2610 | wtap_dump_file_type_subtype(const wtap_dumper *wdh)
2611 | {
2612 | return wdh->file_type_subtype;
2613 | }
2614 |
2615 | int64_t
2616 | wtap_get_bytes_dumped(const wtap_dumper *wdh)
2617 | {
2618 | return wdh->bytes_dumped;
2619 | }
2620 |
2621 | void
2622 | wtap_set_bytes_dumped(wtap_dumper *wdh, int64_t bytes_dumped)
2623 | {
2624 | wdh->bytes_dumped = bytes_dumped;
2625 | }
2626 |
2627 | bool_Bool
2628 | wtap_addrinfo_list_empty(const addrinfo_lists_t *addrinfo_lists)
2629 | {
2630 | return (addrinfo_lists == NULL((void*)0)) ||
2631 | ((addrinfo_lists->ipv4_addr_list == NULL((void*)0)) &&
2632 | (addrinfo_lists->ipv6_addr_list == NULL((void*)0)));
2633 | }
2634 |
2635 | bool_Bool
2636 | wtap_dump_set_addrinfo_list(wtap_dumper *wdh, addrinfo_lists_t *addrinfo_lists)
2637 | {
2638 | if (!wdh || wdh->file_type_subtype < 0 ||
2639 | wdh->file_type_subtype >= (int)file_type_subtype_table_arr->len ||
2640 | wtap_file_type_subtype_supports_block(wdh->file_type_subtype, WTAP_BLOCK_NAME_RESOLUTION) == BLOCK_NOT_SUPPORTED)
2641 | return false0;
2642 | wdh->addrinfo_lists = addrinfo_lists;
2643 | return true1;
2644 | }
2645 |
2646 | void
2647 | wtap_dump_discard_name_resolution(wtap_dumper *wdh)
2648 | {
2649 | /* As below for DSBs. */
2650 | if (wdh->nrbs_growing) {
2651 | /*
2652 | * Pretend we've written all of them.
2653 | */
2654 | wdh->nrbs_growing_written = wdh->nrbs_growing->len;
2655 | }
2656 | }
2657 |
2658 | void
2659 | wtap_dump_discard_decryption_secrets(wtap_dumper *wdh)
2660 | {
2661 | /*
2662 | * This doesn't free the data, as it might be pointed to
2663 | * from other structures; it merely marks all of them as
2664 | * having been written to the file, so that they don't
2665 | * get written by wtap_dump().
2666 | *
2667 | * XXX - our APIs for dealing with some metadata, such as
2668 | * resolved names, decryption secrets, and interface
2669 | * statistics is not very well oriented towards one-pass
2670 | * programs; this needs to be cleaned up. See bug 15502.
2671 | */
2672 | if (wdh->dsbs_growing) {
2673 | /*
2674 | * Pretend we've written all of them.
2675 | */
2676 | wdh->dsbs_growing_written = wdh->dsbs_growing->len;
2677 | }
2678 | }
2679 |
2680 | void
2681 | wtap_dump_discard_sysdig_meta_events(wtap_dumper *wdh)
2682 | {
2683 | /* As above for DSBs. */
2684 | if (wdh->mevs_growing) {
2685 | /*
2686 | * Pretend we've written all of them.
2687 | */
2688 | wdh->mevs_growing_written = wdh->mevs_growing->len;
2689 | }
2690 | }
2691 |
2692 | /* internally open a file for writing (compressed or not) */
2693 | static WFILE_T
2694 | wtap_dump_file_open(const wtap_dumper *wdh, const char *filename)
2695 | {
2696 | switch (wdh->compression_type) {
2697 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG)
2698 | case WS_FILE_GZIP_COMPRESSED:
2699 | return gzwfile_open(filename);
2700 | #endif /* defined (HAVE_ZLIB) || defined (HAVE_ZLIBNG) */
2701 | #ifdef HAVE_LZ4FRAME_H1
2702 | case WS_FILE_LZ4_COMPRESSED:
2703 | return lz4wfile_open(filename);
2704 | #endif /* HAVE_LZ4FRAME_H */
2705 | default:
2706 | return ws_fopenfopen(filename, "wb");
2707 | }
2708 | }
2709 |
2710 | /* internally open a file for writing (compressed or not) */
2711 | static WFILE_T
2712 | wtap_dump_file_fdopen(const wtap_dumper *wdh, int fd)
2713 | {
2714 | switch (wdh->compression_type) {
2715 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG)
2716 | case WS_FILE_GZIP_COMPRESSED:
2717 | return gzwfile_fdopen(fd);
2718 | #endif /* defined (HAVE_ZLIB) || defined (HAVE_ZLIBNG) */
2719 | #ifdef HAVE_LZ4FRAME_H1
2720 | case WS_FILE_LZ4_COMPRESSED:
2721 | return lz4wfile_fdopen(fd);
2722 | #endif /* HAVE_LZ4FRAME_H */
2723 | default:
2724 | return ws_fdopenfdopen(fd, "wb");
2725 | }
2726 | }
2727 |
2728 | /* internally writing raw bytes (compressed or not). Updates wdh->bytes_dumped on success */
2729 | bool_Bool
2730 | wtap_dump_file_write(wtap_dumper *wdh, const void *buf, size_t bufsize, int *err)
2731 | {
2732 | size_t nwritten;
2733 |
2734 | switch (wdh->compression_type) {
2735 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG)
2736 | case WS_FILE_GZIP_COMPRESSED:
2737 | nwritten = gzwfile_write((GZWFILE_T)wdh->fh, buf, (unsigned int) bufsize);
2738 | /*
2739 | * gzwfile_write() returns 0 on error.
2740 | */
2741 | if (nwritten == 0) {
2742 | *err = gzwfile_geterr((GZWFILE_T)wdh->fh);
2743 | return false0;
2744 | }
2745 | break;
2746 | #endif
2747 | #ifdef HAVE_LZ4FRAME_H1
2748 | case WS_FILE_LZ4_COMPRESSED:
2749 | nwritten = lz4wfile_write((LZ4WFILE_T)wdh->fh, buf, bufsize);
2750 | /*
2751 | * lz4wfile_write() returns 0 on error.
2752 | */
2753 | if (nwritten == 0) {
2754 | *err = lz4wfile_geterr((LZ4WFILE_T)wdh->fh);
2755 | return false0;
2756 | }
2757 | break;
2758 | #endif /* HAVE_LZ4FRAME_H */
2759 | default:
2760 | errno(*__errno_location ()) = WTAP_ERR_CANT_WRITE-10;
2761 | nwritten = fwrite(buf, 1, bufsize, (FILE *)wdh->fh);
2762 | /*
2763 | * At least according to the macOS man page,
2764 | * this can return a short count on an error.
2765 | */
2766 | if (nwritten != bufsize) {
2767 | if (ferror((FILE *)wdh->fh))
2768 | *err = errno(*__errno_location ());
2769 | else
2770 | *err = WTAP_ERR_SHORT_WRITE-14;
2771 | return false0;
2772 | }
2773 | }
2774 | wdh->bytes_dumped += bufsize;
2775 | return true1;
2776 | }
2777 |
2778 | /* internally close a file for writing (compressed or not) */
2779 | static int
2780 | wtap_dump_file_close(wtap_dumper *wdh)
2781 | {
2782 | switch (wdh->compression_type) {
2783 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG)
2784 | case WS_FILE_GZIP_COMPRESSED:
2785 | return gzwfile_close((GZWFILE_T)wdh->fh);
2786 | #endif
2787 | #ifdef HAVE_LZ4FRAME_H1
2788 | case WS_FILE_LZ4_COMPRESSED:
2789 | return lz4wfile_close((LZ4WFILE_T)wdh->fh);
2790 | #endif /* HAVE_LZ4FRAME_H */
2791 | default:
2792 | return fclose((FILE *)wdh->fh);
2793 | }
2794 | }
2795 |
2796 | int64_t
2797 | wtap_dump_file_seek(wtap_dumper *wdh, int64_t offset, int whence, int *err)
2798 | {
2799 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG) || defined (HAVE_LZ4FRAME_H1)
2800 | if (wdh->compression_type != WS_FILE_UNCOMPRESSED) {
2801 | *err = WTAP_ERR_CANT_SEEK_COMPRESSED-19;
2802 | return -1;
2803 | } else
2804 | #endif
2805 | {
2806 | if (-1 == ws_fseek64fseeko((FILE *)wdh->fh, offset, whence)) {
2807 | *err = errno(*__errno_location ());
2808 | return -1;
2809 | } else
2810 | {
2811 | return 0;
2812 | }
2813 | }
2814 | }
2815 |
2816 | int64_t
2817 | wtap_dump_file_tell(wtap_dumper *wdh, int *err)
2818 | {
2819 | int64_t rval;
2820 | #if defined (HAVE_ZLIB1) || defined (HAVE_ZLIBNG) || defined (HAVE_LZ4FRAME_H1)
2821 | if (wdh->compression_type != WS_FILE_UNCOMPRESSED) {
2822 | *err = WTAP_ERR_CANT_SEEK_COMPRESSED-19;
2823 | return -1;
2824 | } else
2825 | #endif
2826 | {
2827 | if (-1 == (rval = ws_ftell64ftello((FILE *)wdh->fh))) {
2828 | *err = errno(*__errno_location ());
2829 | return -1;
2830 | } else
2831 | {
2832 | return rval;
2833 | }
2834 | }
2835 | }
2836 |
2837 | void
2838 | cleanup_open_routines(void)
2839 | {
2840 | unsigned i;
2841 | struct open_info *i_open;
2842 |
2843 | if (open_routines != NULL((void*)0) && open_info_arr) {
2844 | for (i = 0, i_open = open_routines; i < open_info_arr->len; i++, i_open++) {
2845 | if (i_open->extensions != NULL((void*)0))
2846 | g_strfreev(i_open->extensions_set);
2847 | }
2848 |
2849 | g_array_free(open_info_arr, true1);
2850 | open_info_arr = NULL((void*)0);
2851 | }
2852 | }
2853 |
2854 | /*
2855 | * Allow built-in file handlers (but *not* plugin file handlers!) to
2856 | * register a "backwards-compatibility" name and file type value, to
2857 | * put in the Lua wtap_filetypes table.
2858 | *
2859 | * This is only to be used as long as we have that table; new Lua
2860 | * code should use wtap_name_to_file_type_subtype() to look up
2861 | * file types by their name, just as C code should.
2862 | *
2863 | * The backwards-compatibility names are the old WTAP_FILE_TYPE_SUBTYPE_
2864 | * #define name, with WTAP_FILE_TYPE_SUBTYPE_ removed.
2865 | */
2866 |
2867 | static GArray *backwards_compatibility_lua_names;
2868 |
2869 | void
2870 | // NOLINTNEXTLINE(misc-no-recursion)
2871 | wtap_register_backwards_compatibility_lua_name(const char *name, int ft)
2872 | {
2873 | struct backwards_compatibiliity_lua_name entry;
2874 |
2875 | /*
2876 | * Create the table if it doesn't already exist.
2877 | * Use the same size as we do for the file type/subtype table.
2878 | */
2879 | if (backwards_compatibility_lua_names == NULL((void*)0)) {
2880 | backwards_compatibility_lua_names = g_array_sized_new(false0,
2881 | true1, sizeof(struct backwards_compatibiliity_lua_name),
2882 | wtap_module_count*2);
2883 |
2884 | /*
2885 | * Extra backwards compatibility hack - add entries
2886 | * for time stamp precision values(!), as well as
2887 | * for "UNKNOWN" and types that don't yet register
2888 | * themselves.
2889 | *
2890 | * If new WS_TSPREC_ value are added, don't bother
2891 | * adding them to this table; any Lua program that
2892 | * would use them should use the wtap_tsprecs type.
2893 | *
2894 | * (Recursion: see "recursion".)
2895 | */
2896 | wtap_register_backwards_compatibility_lua_name("TSPREC_SEC",
2897 | WTAP_TSPREC_SEC0);
2898 | wtap_register_backwards_compatibility_lua_name("TSPREC_DSEC",
2899 | WTAP_TSPREC_100_MSEC1);
2900 | wtap_register_backwards_compatibility_lua_name("TSPREC_CSEC",
2901 | WTAP_TSPREC_10_MSEC2);
2902 | wtap_register_backwards_compatibility_lua_name("TSPREC_MSEC",
2903 | WTAP_TSPREC_MSEC3);
2904 | wtap_register_backwards_compatibility_lua_name("TSPREC_USEC",
2905 | WTAP_TSPREC_USEC6);
2906 | wtap_register_backwards_compatibility_lua_name("TSPREC_NSEC",
2907 | WTAP_TSPREC_NSEC9);
2908 | wtap_register_backwards_compatibility_lua_name("UNKNOWN",
2909 | WTAP_FILE_TYPE_SUBTYPE_UNKNOWN-1);
2910 | }
2911 | entry.name = name;
2912 | entry.ft = ft;
2913 | g_array_append_val(backwards_compatibility_lua_names, entry)g_array_append_vals (backwards_compatibility_lua_names, & (entry), 1);
2914 | }
2915 |
2916 | const GArray *
2917 | get_backwards_compatibility_lua_table(void)
2918 | {
2919 | return backwards_compatibility_lua_names;
2920 | }
2921 |
2922 | /*
2923 | * Editor modelines - https://www.wireshark.org/tools/modelines.html
2924 | *
2925 | * Local variables:
2926 | * c-basic-offset: 8
2927 | * tab-width: 8
2928 | * indent-tabs-mode: t
2929 | * End:
2930 | *
2931 | * vi: set shiftwidth=8 tabstop=8 noexpandtab:
2932 | * :indentSize=8:tabSize=8:noTabs=false:
2933 | */