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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:34:10 +0000
commite4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch)
tree68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/wslua/wslua_capture_info.c
parentInitial commit. (diff)
downloadwireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz
wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/wslua/wslua_capture_info.c')
-rw-r--r--epan/wslua/wslua_capture_info.c520
1 files changed, 520 insertions, 0 deletions
diff --git a/epan/wslua/wslua_capture_info.c b/epan/wslua/wslua_capture_info.c
new file mode 100644
index 0000000..06bf847
--- /dev/null
+++ b/epan/wslua/wslua_capture_info.c
@@ -0,0 +1,520 @@
+/*
+ * wslua_capture_info.c
+ *
+ * Wireshark's interface to the Lua Programming Language
+ * for capture file data and meta-data.
+ *
+ * (c) 2014, Hadriel Kaplan <hadrielk@yahoo.com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include "config.h"
+
+#include "wslua_file_common.h"
+
+#include <epan/addr_resolv.h>
+
+
+/* WSLUA_CONTINUE_MODULE File */
+
+
+WSLUA_CLASS_DEFINE(CaptureInfo,FAIL_ON_NULL_OR_EXPIRED("CaptureInfo"));
+/*
+ A `CaptureInfo` object, passed into Lua as an argument by `FileHandler` callback
+ function `read_open()`, `read()`, `seek_read()`, `seq_read_close()`, and `read_close()`.
+ This object represents capture file data and meta-data (data about the
+ capture file) being read into Wireshark/TShark.
+
+ This object's fields can be written-to by Lua during the read-based function callbacks.
+ In other words, when the Lua plugin's `FileHandler.read_open()` function is invoked, a
+ `CaptureInfo` object will be passed in as one of the arguments, and its fields
+ should be written to by your Lua code to tell Wireshark about the capture.
+
+ @since 1.11.3
+ */
+
+CaptureInfo* push_CaptureInfo(lua_State* L, wtap *wth, const gboolean first_time) {
+ CaptureInfo f;
+
+ if (!wth) {
+ luaL_error(L, "Internal error: wth is NULL!");
+ return NULL;
+ }
+
+ f = (CaptureInfo) g_malloc0(sizeof(struct _wslua_captureinfo));
+ f->wth = wth;
+ f->wdh = NULL;
+ f->expired = FALSE;
+
+ if (first_time) {
+ /* XXX: need to do this? */
+ wth->file_encap = WTAP_ENCAP_UNKNOWN;
+ wth->file_tsprec = WTAP_TSPREC_UNKNOWN;
+ wth->snapshot_length = 0;
+ }
+
+ return pushCaptureInfo(L,f);
+}
+
+WSLUA_METAMETHOD CaptureInfo__tostring(lua_State* L) {
+ /* Generates a string of debug info for the CaptureInfo */
+ CaptureInfo fi = toCaptureInfo(L,1);
+
+ if (!fi || !fi->wth) {
+ lua_pushstring(L,"CaptureInfo pointer is NULL!");
+ } else {
+ wtap *wth = fi->wth;
+ lua_pushfstring(L, "CaptureInfo: file_type_subtype=%d, snapshot_length=%d, file_encap=%d, file_tsprec='%s'",
+ wth->file_type_subtype, wth->snapshot_length, wth->file_encap, wth->file_tsprec);
+ }
+
+ WSLUA_RETURN(1); /* String of debug information. */
+}
+
+
+static int CaptureInfo__gc(lua_State* L) {
+ CaptureInfo fc = toCaptureInfo(L,1);
+ g_free(fc);
+ return 0;
+}
+
+/* WSLUA_ATTRIBUTE CaptureInfo_encap RW The packet encapsulation type for the whole file.
+
+ See `wtap_encaps` for available types. Set to `wtap_encaps.PER_PACKET` if packets can
+ have different types, then later set `FrameInfo.encap` for each packet during `read()`/`seek_read()`.
+ */
+WSLUA_ATTRIBUTE_NAMED_NUMBER_GETTER(CaptureInfo,encap,wth->file_encap);
+WSLUA_ATTRIBUTE_NAMED_NUMBER_SETTER(CaptureInfo,encap,wth->file_encap,int);
+
+/* WSLUA_ATTRIBUTE CaptureInfo_time_precision RW The precision of the packet timestamps in the file.
+
+ See `wtap_file_tsprec` for available precisions.
+ */
+WSLUA_ATTRIBUTE_NAMED_NUMBER_GETTER(CaptureInfo,time_precision,wth->file_tsprec);
+WSLUA_ATTRIBUTE_NAMED_NUMBER_SETTER(CaptureInfo,time_precision,wth->file_tsprec,int);
+
+/* WSLUA_ATTRIBUTE CaptureInfo_snapshot_length RW The maximum packet length that could be recorded.
+
+ Setting it to `0` means unknown.
+ */
+WSLUA_ATTRIBUTE_NAMED_NUMBER_GETTER(CaptureInfo,snapshot_length,wth->snapshot_length);
+WSLUA_ATTRIBUTE_NAMED_NUMBER_SETTER(CaptureInfo,snapshot_length,wth->snapshot_length,guint);
+
+/* WSLUA_ATTRIBUTE CaptureInfo_comment RW A string comment for the whole capture file,
+ or nil if there is no `comment`. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_NTH_STRING_GETTER(CaptureInfo,comment,wth->shb_hdrs,OPT_COMMENT);
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_NTH_STRING_SETTER(CaptureInfo,comment,wth->shb_hdrs,OPT_COMMENT);
+
+/* WSLUA_ATTRIBUTE CaptureInfo_hardware RW A string containing the description of
+ the hardware used to create the capture, or nil if there is no `hardware` string. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_GETTER(CaptureInfo,hardware,wth->shb_hdrs,OPT_SHB_HARDWARE);
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_SETTER(CaptureInfo,hardware,wth->shb_hdrs,OPT_SHB_HARDWARE);
+
+/* WSLUA_ATTRIBUTE CaptureInfo_os RW A string containing the name of
+ the operating system used to create the capture, or nil if there is no `os` string. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_GETTER(CaptureInfo,os,wth->shb_hdrs,OPT_SHB_OS);
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_SETTER(CaptureInfo,os,wth->shb_hdrs,OPT_SHB_OS);
+
+/* WSLUA_ATTRIBUTE CaptureInfo_user_app RW A string containing the name of
+ the application used to create the capture, or nil if there is no `user_app` string. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_GETTER(CaptureInfo,user_app,wth->shb_hdrs,OPT_SHB_USERAPPL);
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_SETTER(CaptureInfo,user_app,wth->shb_hdrs,OPT_SHB_USERAPPL);
+
+/* WSLUA_ATTRIBUTE CaptureInfo_hosts WO Sets resolved ip-to-hostname information.
+
+ The value set must be a Lua table of two key-ed names: `ipv4_addresses` and `ipv6_addresses`.
+ The value of each of these names are themselves array tables, of key-ed tables, such that the inner table has a key
+ `addr` set to the raw 4-byte or 16-byte IP address Lua string and a `name` set to the resolved name.
+
+ For example, if the capture file identifies one resolved IPv4 address of 1.2.3.4 to `foo.com`, then you must set
+ `CaptureInfo.hosts` to a table of:
+
+ [source,lua]
+ ----
+ { ipv4_addresses = { { addr = "\01\02\03\04", name = "foo.com" } } }
+ ----
+
+ Note that either the `ipv4_addresses` or the `ipv6_addresses` table, or both, may be empty or nil.
+ */
+static int CaptureInfo_set_hosts(lua_State* L) {
+ CaptureInfo fi = checkCaptureInfo(L,1);
+ wtap *wth = fi->wth;
+ const char *addr = NULL;
+ const char *name = NULL;
+ size_t addr_len = 0;
+ size_t name_len = 0;
+ guint32 v4_addr = 0;
+ ws_in6_addr v6_addr = { {0} };
+
+ if (!wth->add_new_ipv4 || !wth->add_new_ipv6) {
+ return luaL_error(L, "CaptureInfo wtap has no IPv4 or IPv6 name resolution");
+ }
+
+ if (!lua_istable(L,-1)) {
+ return luaL_error(L, "CaptureInfo.host must be set to a table");
+ }
+
+ /* get the ipv4_addresses table */
+ lua_getfield(L, -1, "ipv4_addresses");
+
+ if (lua_istable(L,-1)) {
+ /* now walk the table */
+ lua_pushnil(L); /* first key */
+ while (lua_next(L, -2) != 0) {
+ /* 'key' (at index -2) and 'value' (at index -1) */
+ if (!lua_istable(L,-1)) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv4_addresses table does not contain a table");
+ }
+
+ lua_getfield(L, -1, "addr");
+ if (!lua_isstring(L,-1)) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv4_addresses table's table does not contain an 'addr' field");
+ }
+ addr = luaL_checklstring(L,-1,&addr_len);
+ if (addr_len != 4) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv4_addresses 'addr' value is not 4 bytes long");
+ }
+ memcpy(&v4_addr, addr, 4);
+
+ lua_getfield(L, -1, "name");
+ if (!lua_isstring(L,-1)) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv4_addresses table's table does not contain an 'addr' field");
+ }
+ name = luaL_checklstring(L,-1,&name_len);
+
+ wth->add_new_ipv4(v4_addr, name, FALSE);
+
+ /* removes 'value'; keeps 'key' for next iteration */
+ lua_pop(L, 1);
+ }
+ }
+
+ /* wasn't a table, or it was and we walked it; either way pop it */
+ lua_pop(L,1);
+
+
+ /* get the ipv6_addresses table */
+ lua_getfield(L, -1, "ip6_addresses");
+
+ if (lua_istable(L,-1)) {
+ /* now walk the table */
+ lua_pushnil(L); /* first key */
+ while (lua_next(L, -2) != 0) {
+ /* 'key' (at index -2) and 'value' (at index -1) */
+ if (!lua_istable(L,-1)) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv6_addresses table does not contain a table");
+ }
+
+ lua_getfield(L, -1, "addr");
+ if (!lua_isstring(L,-1)) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv6_addresses table's table does not contain an 'addr' field");
+ }
+ addr = luaL_checklstring(L,-1,&addr_len);
+ if (addr_len != 16) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv6_addresses 'addr' value is not 16 bytes long");
+ }
+ memcpy(&v6_addr, addr, 16);
+
+ lua_getfield(L, -1, "name");
+ if (!lua_isstring(L,-1)) {
+ lua_pop(L, 3); /* remove whatever it is, the key, and the ipv4_addreses table */
+ return luaL_error(L, "CaptureInfo.host ipv6_addresses table's table does not contain an 'addr' field");
+ }
+ name = luaL_checklstring(L,-1,&name_len);
+
+ wth->add_new_ipv6((const void *)(&v6_addr), name, FALSE);
+
+ /* removes 'value'; keeps 'key' for next iteration */
+ lua_pop(L, 1);
+ }
+ }
+
+ /* wasn't a table, or it was and we walked it; either way pop it */
+ lua_pop(L,1);
+
+ return 0;
+}
+
+
+/* WSLUA_ATTRIBUTE CaptureInfo_private_table RW A private Lua value unique to this file.
+
+ The `private_table` is a field you set/get with your own Lua table.
+ This is provided so that a Lua script can save per-file reading/writing
+ state, because multiple files can be opened and read at the same time.
+
+ For example, if the user issued a reload-file command, or Lua called the
+ `reload()` function, then the current capture file is still open while a new one
+ is being opened, and thus Wireshark will invoke `read_open()` while the previous
+ capture file has not caused `read_close()` to be called; and if the `read_open()`
+ succeeds then `read_close()` will be called right after that for the previous
+ file, rather than the one just opened. Thus the Lua script can use this
+ `private_table` to store a table of values specific to each file, by setting
+ this `private_table` in the `read_open()` function, which it can then later get back
+ inside its `read()`, `seek_read()`, and `read_close()` functions.
+*/
+static int CaptureInfo_get_private_table(lua_State* L) {
+ CaptureInfo fi = checkCaptureInfo(L,1);
+ return get_wth_priv_table_ref(L, fi->wth);
+}
+
+static int CaptureInfo_set_private_table(lua_State* L) {
+ CaptureInfo fi = checkCaptureInfo(L,1);
+ return set_wth_priv_table_ref(L, fi->wth);
+}
+
+WSLUA_ATTRIBUTES CaptureInfo_attributes[] = {
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,encap),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,time_precision),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,snapshot_length),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,comment),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,hardware),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,os),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,user_app),
+ WSLUA_ATTRIBUTE_WOREG(CaptureInfo,hosts),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfo,private_table),
+ { NULL, NULL, NULL }
+};
+
+WSLUA_META CaptureInfo_meta[] = {
+ WSLUA_CLASS_MTREG(CaptureInfo,tostring),
+ { NULL, NULL }
+};
+
+int CaptureInfo_register(lua_State* L) {
+ WSLUA_REGISTER_META_WITH_ATTRS(CaptureInfo);
+ return 0;
+}
+
+
+WSLUA_CLASS_DEFINE(CaptureInfoConst,FAIL_ON_NULL_OR_EXPIRED("CaptureInfoConst"));
+/*
+ A `CaptureInfoConst` object, passed into Lua as an argument to the `FileHandler` callback
+ function `write_open()`.
+
+ This object represents capture file data and meta-data (data about the
+ capture file) for the current capture in Wireshark/TShark.
+
+ This object's fields are read-from when used by `write_open` function callback.
+ In other words, when the Lua plugin's FileHandler `write_open` function is invoked, a
+ `CaptureInfoConst` object will be passed in as one of the arguments, and its fields
+ should be read from by your Lua code to get data about the capture that needs to be written.
+
+ @since 1.11.3
+ */
+
+CaptureInfoConst* push_CaptureInfoConst(lua_State* L, wtap_dumper *wdh) {
+ CaptureInfoConst f;
+
+ if (!wdh) {
+ luaL_error(L, "Internal error: wdh is NULL!");
+ return NULL;
+ }
+
+ f = (CaptureInfoConst) g_malloc0(sizeof(struct _wslua_captureinfo));
+ f->wth = NULL;
+ f->wdh = wdh;
+ f->expired = FALSE;
+ return pushCaptureInfoConst(L,f);
+}
+
+WSLUA_METAMETHOD CaptureInfoConst__tostring(lua_State* L) {
+ /* Generates a string of debug info for the CaptureInfoConst */
+ CaptureInfoConst fi = toCaptureInfoConst(L,1);
+
+ if (!fi || !fi->wdh) {
+ lua_pushstring(L,"CaptureInfoConst pointer is NULL!");
+ } else {
+ wtap_dumper *wdh = fi->wdh;
+ lua_pushfstring(L, "CaptureInfoConst: file_type_subtype=%d, snaplen=%d, encap=%d, compression_type=%d",
+ wdh->file_type_subtype, wdh->snaplen, wdh->file_encap, wdh->compression_type);
+ }
+
+ WSLUA_RETURN(1); /* String of debug information. */
+}
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_type RO The file type. */
+WSLUA_ATTRIBUTE_NAMED_NUMBER_GETTER(CaptureInfoConst,type,wdh->file_type_subtype);
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_snapshot_length RO The maximum packet length that is actually recorded (vs. the original
+ length of any given packet on-the-wire). A value of `0` means the snapshot length is unknown or there is no one
+ such length for the whole file. */
+WSLUA_ATTRIBUTE_NAMED_NUMBER_GETTER(CaptureInfoConst,snapshot_length,wdh->snaplen);
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_encap RO The packet encapsulation type for the whole file.
+
+ See `wtap_encaps` for available types. It is set to `wtap_encaps.PER_PACKET` if packets can
+ have different types, in which case each Frame identifies its type, in `FrameInfo.packet_encap`. */
+WSLUA_ATTRIBUTE_NAMED_NUMBER_GETTER(CaptureInfoConst,encap,wdh->file_encap);
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_comment RW A comment for the whole capture file, if the
+ `wtap_presence_flags.COMMENTS` was set in the presence flags; nil if there is no comment. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_GETTER(CaptureInfoConst,comment,wth->shb_hdrs,OPT_COMMENT);
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_hardware RO A string containing the description of
+ the hardware used to create the capture, or nil if there is no hardware string. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_GETTER(CaptureInfoConst,hardware,wth->shb_hdrs,OPT_SHB_HARDWARE);
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_os RO A string containing the name of
+ the operating system used to create the capture, or nil if there is no os string. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_GETTER(CaptureInfoConst,os,wth->shb_hdrs,OPT_SHB_OS);
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_user_app RO A string containing the name of
+ the application used to create the capture, or nil if there is no user_app string. */
+WSLUA_ATTRIBUTE_NAMED_OPT_BLOCK_STRING_GETTER(CaptureInfoConst,user_app,wth->shb_hdrs,OPT_SHB_USERAPPL);
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_hosts RO A ip-to-hostname Lua table of two key-ed names: `ipv4_addresses` and `ipv6_addresses`.
+ The value of each of these names are themselves array tables, of key-ed tables, such that the inner table has a key
+ `addr` set to the raw 4-byte or 16-byte IP address Lua string and a `name` set to the resolved name.
+
+ For example, if the current capture has one resolved IPv4 address of 1.2.3.4 to `foo.com`, then getting
+ `CaptureInfoConst.hosts` will get a table of:
+
+ [source,lua]
+ ----
+ { ipv4_addresses = { { addr = "\01\02\03\04", name = "foo.com" } }, ipv6_addresses = { } }
+ ----
+
+ Note that either the `ipv4_addresses` or the `ipv6_addresses` table, or both, may be empty, however they will not
+ be nil. */
+static int CaptureInfoConst_get_hosts(lua_State* L) {
+ CaptureInfoConst fi = checkCaptureInfoConst(L,1);
+ wtap_dumper *wdh = fi->wdh;
+
+ /* create the main table to return */
+ lua_newtable(L);
+
+ /* create the ipv4_addresses table */
+ lua_newtable(L);
+
+ if (wdh->addrinfo_lists && wdh->addrinfo_lists->ipv4_addr_list) {
+ hashipv4_t *ipv4_hash_list_entry = (hashipv4_t *)g_list_nth_data(wdh->addrinfo_lists->ipv4_addr_list, 0);
+ int i, j;
+ for (i=1, j=1; ipv4_hash_list_entry != NULL; i++) {
+ if ((ipv4_hash_list_entry->flags & USED_AND_RESOLVED_MASK) == RESOLVED_ADDRESS_USED) {
+ lua_pushnumber(L, j); /* push numeric index key starting at 1, so it will be an array table */
+ /* create the entry table */
+ lua_newtable(L);
+ /* addr is in network order already */
+ lua_pushlstring(L, (char*)(&ipv4_hash_list_entry->ip), 4);
+ lua_setfield(L, -2, "addr");
+ lua_pushstring(L, ipv4_hash_list_entry->name);
+ lua_setfield(L, -2, "name");
+ /* now our ipv4_addresses table is at -3, key number is -2, and entry table at -2, so we're good */
+ lua_settable(L, -3);
+ j++;
+ }
+ ipv4_hash_list_entry = (hashipv4_t *)g_list_nth_data(wdh->addrinfo_lists->ipv4_addr_list, i);
+ }
+ }
+
+ /* set the (possibly empty) ipv4_addresses table into the main table */
+ lua_setfield(L, -2, "ipv4_addresses");
+
+ /* create the ipv6_addresses table */
+ lua_newtable(L);
+
+ if (wdh->addrinfo_lists && wdh->addrinfo_lists->ipv6_addr_list) {
+ hashipv6_t *ipv6_hash_list_entry = (hashipv6_t *)g_list_nth_data(wdh->addrinfo_lists->ipv6_addr_list, 0);
+ int i, j;
+ for (i=1, j=1; ipv6_hash_list_entry != NULL; i++) {
+ if ((ipv6_hash_list_entry->flags & USED_AND_RESOLVED_MASK) == RESOLVED_ADDRESS_USED) {
+ lua_pushnumber(L, j); /* push numeric index key starting at 1, so it will be an array table */
+ /* create the entry table */
+ lua_newtable(L);
+ /* addr is in network order already */
+ lua_pushlstring(L, (char*)(&ipv6_hash_list_entry->addr[0]), 16);
+ lua_setfield(L, -2, "addr");
+ lua_pushstring(L, ipv6_hash_list_entry->name);
+ lua_setfield(L, -2, "name");
+ /* now our ipv6_addresses table is at -3, key number is -2, and entry table at -2, so we're good */
+ lua_settable(L, -3);
+ j++;
+ }
+ ipv6_hash_list_entry = (hashipv6_t *)g_list_nth_data(wdh->addrinfo_lists->ipv6_addr_list, i);
+ }
+ }
+
+ /* set the (possibly empty) ipv6_addresses table into the main table */
+ lua_setfield(L, -2, "ip6_addresses");
+
+ /* return the main table */
+ return 1;
+}
+
+/* WSLUA_ATTRIBUTE CaptureInfoConst_private_table RW A private Lua value unique to this file.
+
+ The `private_table` is a field you set/get with your own Lua table.
+ This is provided so that a Lua script can save per-file reading/writing
+ state, because multiple files can be opened and read at the same time.
+
+ For example, if two Lua scripts issue a `Dumper:new_for_current()` call and the
+ current file happens to use your script's writer, then the Wireshark will invoke
+ `write_open()` while the previous capture file has not had `write_close()` called.
+ Thus the Lua script can use this `private_table` to store a table of values
+ specific to each file, by setting this `private_table` in the write_open()
+ function, which it can then later get back inside its `write()`, and `write_close()`
+ functions.
+*/
+static int CaptureInfoConst_get_private_table(lua_State* L) {
+ CaptureInfoConst fi = checkCaptureInfoConst(L,1);
+ return get_wdh_priv_table_ref(L, fi->wdh);
+}
+
+static int CaptureInfoConst_set_private_table(lua_State* L) {
+ CaptureInfoConst fi = checkCaptureInfoConst(L,1);
+ return set_wdh_priv_table_ref(L, fi->wdh);
+}
+
+static int CaptureInfoConst__gc(lua_State* L) {
+ CaptureInfoConst fi = toCaptureInfoConst(L,1);
+ g_free(fi);
+ return 0;
+}
+
+WSLUA_ATTRIBUTES CaptureInfoConst_attributes[] = {
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,encap),
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,type),
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,snapshot_length),
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,comment),
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,hardware),
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,os),
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,user_app),
+ WSLUA_ATTRIBUTE_ROREG(CaptureInfoConst,hosts),
+ WSLUA_ATTRIBUTE_RWREG(CaptureInfoConst,private_table),
+ { NULL, NULL, NULL }
+};
+
+WSLUA_META CaptureInfoConst_meta[] = {
+ WSLUA_CLASS_MTREG(CaptureInfoConst,tostring),
+ { NULL, NULL }
+};
+
+int CaptureInfoConst_register(lua_State* L) {
+ WSLUA_REGISTER_META_WITH_ATTRS(CaptureInfoConst);
+ return 0;
+}
+
+
+/*
+ * Editor modelines - https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */