Move version_info.[ch] to ui/

Version info is an aspect of UI implementation so move it to
a more appropriate place, such as ui/. This also helps declutter
the top-level.

A static library is appropriate to encapsulate the dependencies
as private and it is better supported by CMake than object libraries.

Also version_info.h should not be installed as a public header.

13 files changed, 694 insertions, 19 deletions

diff --git a/ui/CMakeLists.txt b/ui/CMakeLists.txt
index 06f829a77d..f3e0c6d3e6 100644
--- a/ui/CMakeLists.txt
+++ b/ui/CMakeLists.txt
@@ -78,17 +78,8 @@ set_source_files_properties(
 	COMPILE_FLAGS "${WERROR_COMMON_FLAGS}"
 )
 
-
 add_library(ui STATIC ${UI_SRC})
 
-set_target_properties(ui PROPERTIES
-	LINK_FLAGS "${WS_LINK_FLAGS}"
-	FOLDER "UI"
-)
-if(MSVC)
-	set_target_properties(ui PROPERTIES LINK_FLAGS_DEBUG "${WS_MSVC_DEBUG_LINK_FLAGS}")
-endif()
-
 target_link_libraries(ui wsutil caputils)
 
 target_include_directories(ui SYSTEM
@@ -96,6 +87,26 @@ target_include_directories(ui SYSTEM
 		${WINSPARKLE_INCLUDE_DIRS}
 )
 
+add_library(version_info STATIC version_info.c)
+
+if(NOT VCSVERSION_OVERRIDE)
+	add_dependencies(version_info version)
+endif()
+
+target_link_libraries(version_info PRIVATE ${ZLIB_LIBRARIES})
+
+target_include_directories(version_info PRIVATE ${ZLIB_INCLUDE_DIRS})
+
+set_target_properties(ui version_info PROPERTIES
+	LINK_FLAGS "${WS_LINK_FLAGS}"
+	FOLDER "UI"
+)
+if(MSVC)
+	set_target_properties(ui version_info PROPERTIES
+		LINK_FLAGS_DEBUG "${WS_MSVC_DEBUG_LINK_FLAGS}"
+	)
+endif()
+
 add_definitions(-DDOC_DIR="${CMAKE_INSTALL_FULL_DOCDIR}")
 
 CHECKAPI(
diff --git a/ui/commandline.c b/ui/commandline.c
index 96135f4472..ebfc5eae50 100644
--- a/ui/commandline.c
+++ b/ui/commandline.c
@@ -29,7 +29,7 @@
 #include <wsutil/wsgetopt.h>
 #endif
 
-#include <version_info.h>
+#include <ui/version_info.h>
 
 #include <ui/clopts_common.h>
 #include <ui/cmdarg_err.h>
diff --git a/ui/decode_as_utils.c b/ui/decode_as_utils.c
index 5357b44d52..be2164e372 100644
--- a/ui/decode_as_utils.c
+++ b/ui/decode_as_utils.c
@@ -25,7 +25,7 @@
 #include "wsutil/filesystem.h"
 #include <wsutil/ws_assert.h>
 #include "ui/cmdarg_err.h"
-#include "version_info.h"
+#include "ui/version_info.h"
 
 /* XXX - We might want to switch this to a UAT */
 
diff --git a/ui/export_pdu_ui_utils.c b/ui/export_pdu_ui_utils.c
index 7246b57f66..53e43bbba2 100644
--- a/ui/export_pdu_ui_utils.c
+++ b/ui/export_pdu_ui_utils.c
@@ -15,7 +15,7 @@
 #include "globals.h"
 #include "wsutil/os_version_info.h"
 #include "wsutil/tempfile.h"
-#include "version_info.h"
+#include "ui/version_info.h"
 
 #include <epan/tap.h>
 #include <epan/exported_pdu.h>
diff --git a/ui/qt/about_dialog.cpp b/ui/qt/about_dialog.cpp
index 14535baa60..27611a1f62 100644
--- a/ui/qt/about_dialog.cpp
+++ b/ui/qt/about_dialog.cpp
@@ -38,7 +38,7 @@
 #include "wsutil/tempfile.h"
 #include "wsutil/plugins.h"
 #include "wsutil/copyright_info.h"
-#include "version_info.h"
+#include "ui/version_info.h"
 
 #include "extcap.h"
 
diff --git a/ui/qt/capture_file_properties_dialog.cpp b/ui/qt/capture_file_properties_dialog.cpp
index 8c23a6cb19..39241dcc1a 100644
--- a/ui/qt/capture_file_properties_dialog.cpp
+++ b/ui/qt/capture_file_properties_dialog.cpp
@@ -16,7 +16,7 @@
 
 #include "wsutil/str_util.h"
 #include "wsutil/utf8_entities.h"
-#include "version_info.h"
+#include "ui/version_info.h"
 
 #include <ui/qt/utils/qt_ui_utils.h>
 #include "wireshark_application.h"
diff --git a/ui/qt/follow_stream_dialog.cpp b/ui/qt/follow_stream_dialog.cpp
index e64bd5427b..4e36e09ea5 100644
--- a/ui/qt/follow_stream_dialog.cpp
+++ b/ui/qt/follow_stream_dialog.cpp
@@ -33,7 +33,7 @@
 
 #include "wsutil/file_util.h"
 #include "wsutil/str_util.h"
-#include "version_info.h"
+#include "ui/version_info.h"
 
 #include "ws_symbol_export.h"
 
diff --git a/ui/qt/main.cpp b/ui/qt/main.cpp
index 43b9b34ac1..975c0e21b5 100644
--- a/ui/qt/main.cpp
+++ b/ui/qt/main.cpp
@@ -48,7 +48,7 @@
 #include <wsutil/report_message.h>
 #include <wsutil/please_report_bug.h>
 #include <wsutil/unicode-utils.h>
-#include <version_info.h>
+#include <ui/version_info.h>
 
 #include <epan/addr_resolv.h>
 #include <epan/ex-opt.h>
diff --git a/ui/qt/main_window.cpp b/ui/qt/main_window.cpp
index 34ccf03ebd..6ff429918a 100644
--- a/ui/qt/main_window.cpp
+++ b/ui/qt/main_window.cpp
@@ -23,7 +23,7 @@ DIAG_ON(frame-larger-than=)
 #include <wsutil/filesystem.h>
 #include <wsutil/wslog.h>
 #include <wsutil/ws_assert.h>
-#include <version_info.h>
+#include <ui/version_info.h>
 #include <epan/prefs.h>
 #include <epan/stats_tree_priv.h>
 #include <epan/plugin_if.h>
diff --git a/ui/qt/welcome_page.cpp b/ui/qt/welcome_page.cpp
index 059a57334d..8631423ce4 100644
--- a/ui/qt/welcome_page.cpp
+++ b/ui/qt/welcome_page.cpp
@@ -16,7 +16,7 @@
 #include "ui/capture_globals.h"
 #include "ui/urls.h"
 
-#include "version_info.h"
+#include "ui/version_info.h"
 
 #include "welcome_page.h"
 #include <ui_welcome_page.h>
diff --git a/ui/tap_export_pdu.c b/ui/tap_export_pdu.c
index 98190a8e2e..850148ca55 100644
--- a/ui/tap_export_pdu.c
+++ b/ui/tap_export_pdu.c
@@ -18,7 +18,7 @@
 #include <wsutil/os_version_info.h>
 #include <wsutil/report_message.h>
 
-#include "version_info.h"
+#include "ui/version_info.h"
 
 #include "tap_export_pdu.h"
 
diff --git a/ui/version_info.c b/ui/version_info.c
new file mode 100644
index 0000000000..b7e60cc381
--- /dev/null
+++ b/ui/version_info.c
@@ -0,0 +1,547 @@
+/* version_info.c
+ * Routines to report version information for Wireshark programs
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <locale.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#elif __APPLE__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#elif __linux__
+#include <sys/sysinfo.h>
+#endif
+
+#include <glib.h>
+
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+#endif
+
+#include "version.h"
+
+#include "version_info.h"
+
+#include <wsutil/cpu_info.h>
+#include <wsutil/copyright_info.h>
+#include <wsutil/os_version_info.h>
+#include <wsutil/crash_info.h>
+#include <wsutil/plugins.h>
+
+static char *appname_with_version;
+static char *comp_info;
+static char *runtime_info;
+
+static void get_compiler_info(GString *str);
+
+void
+ws_init_version_info(const char *appname,
+	void (*prepend_compile_time_info)(GString *),
+	void (*append_compile_time_info)(GString *),
+	void (*additional_run_time_info)(GString *))
+{
+	GString *comp_info_str, *runtime_info_str;
+
+	/*
+	 * Combine the supplied application name string with the
+	 * version - including the VCS version, for a build from
+	 * a checkout.
+	 */
+	appname_with_version = g_strdup_printf("%s %s",
+		appname, get_ws_vcs_version_info());
+
+	/* Get the compile-time version information string */
+	comp_info_str = get_compiled_version_info(prepend_compile_time_info,
+		append_compile_time_info);
+
+	/* Get the run-time version information string */
+	runtime_info_str = get_runtime_version_info(additional_run_time_info);
+
+	comp_info = g_string_free(comp_info_str, FALSE);
+	runtime_info = g_string_free(runtime_info_str, FALSE);
+
+	/* Add this information to the information to be reported on a crash. */
+	ws_add_crash_info("%s\n"
+		"\n"
+		"%s\n"
+		"%s",
+		appname_with_version, comp_info, runtime_info);
+}
+
+const char *
+get_appname_and_version(void)
+{
+	return appname_with_version;
+}
+
+/*
+ * If the string doesn't end with a newline, append one.
+ * Then word-wrap it to 80 columns.
+ */
+static void
+end_string(GString *str)
+{
+	size_t point;
+	char *p, *q;
+
+	point = str->len;
+	if (point == 0 || str->str[point - 1] != '\n')
+		g_string_append(str, "\n");
+	p = str->str;
+	while (*p != '\0') {
+		q = strchr(p, '\n');
+		if (q - p > 80) {
+			/*
+			 * Break at or before this point.
+			 */
+			q = p + 80;
+			while (q > p && *q != ' ')
+				q--;
+			if (q != p)
+				*q = '\n';
+		}
+		p = q + 1;
+	}
+}
+
+static const gchar *
+get_zlib_compiled_version_info(void)
+{
+#ifdef HAVE_ZLIB
+#ifdef ZLIB_VERSION
+	return "with zlib "ZLIB_VERSION;
+#else
+	return "with zlib (version unknown)";
+#endif /* ZLIB_VERSION */
+#else
+	return "without zlib";
+#endif /* HAVE_ZLIB */
+}
+
+/*
+ * Get various library compile-time versions, put them in a GString,
+ * and return the GString.
+ *
+ * "prepend_info" is called at the start to prepend any additional
+ * information before the standard library information.
+ *
+ * "append_info" is called at the end to append any additional
+ * information after the standard library information.  This is
+ * required in order to, for example, put Qt information at the
+ * end of the string, as we don't use Qt in TShark.
+ */
+GString *
+get_compiled_version_info(void (*prepend_info)(GString *),
+			void (*append_info)(GString *))
+{
+	GString *str;
+
+	str = g_string_new("Compiled ");
+
+	if (sizeof(str) == 4)
+		g_string_append(str, "(32-bit) ");
+	else
+		g_string_append(str, "(64-bit) ");
+
+	/* Compiler info */
+	g_string_append(str, "using ");
+	get_compiler_info(str);
+	g_string_append(str, ", ");
+
+	if (prepend_info) {
+		(*prepend_info)(str);
+		g_string_append(str, ", ");
+	}
+
+	/* GLIB */
+	g_string_append(str, "with ");
+	g_string_append_printf(str,
+#ifdef GLIB_MAJOR_VERSION
+		"GLib %d.%d.%d", GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION,
+		GLIB_MICRO_VERSION);
+#else
+		"GLib (version unknown)");
+#endif
+
+	g_string_append_printf(str, ", %s", get_zlib_compiled_version_info());
+
+	/* Additional application-dependent information */
+	if (append_info)
+		(*append_info)(str);
+
+#ifdef WS_DISABLE_ASSERT
+	g_string_append(str, ", without assertions");
+#endif
+
+	g_string_append(str, ".");
+
+	end_string(str);
+
+	return str;
+}
+
+static void
+get_mem_info(GString *str)
+{
+	gint64 memsize = 0;
+
+#ifdef _WIN32
+	MEMORYSTATUSEX statex;
+
+	statex.dwLength = sizeof (statex);
+
+	if (GlobalMemoryStatusEx(&statex))
+		memsize = statex.ullTotalPhys;
+#elif __APPLE__
+	size_t len = sizeof(memsize);
+	sysctlbyname("hw.memsize", &memsize, &len, NULL, 0);
+#elif __linux__
+	struct sysinfo info;
+	if (sysinfo(&info) == 0)
+		memsize = info.totalram * info.mem_unit;
+#endif
+
+	if (memsize > 0)
+		g_string_append_printf(str, ", with ""%" G_GINT64_MODIFIER "d" " MB of physical memory", memsize/(1024*1024));
+}
+
+/*
+ * Get compiler information, and append it to the GString.
+ */
+static void
+get_compiler_info(GString *str)
+{
+	/*
+	 * See https://sourceforge.net/apps/mediawiki/predef/index.php?title=Compilers
+	 * information on various defined strings.
+	 *
+	 * GCC's __VERSION__ is a nice text string for humans to
+	 * read.  The page at sourceforge.net largely describes
+	 * numeric #defines that encode the version; if the compiler
+	 * doesn't also offer a nice printable string, we try prettifying
+	 * the number somehow.
+	 */
+	#if defined(_MSC_FULL_VER)
+		/*
+		 * We check for this first, as Microsoft have a version of their
+		 * compiler that has Clang as the front end and their code generator
+		 * as the back end.
+		 *
+		 * My head asplode.
+		 */
+
+		/* As of Wireshark 3.0, we support only Visual Studio 2015 (14.x)
+		 * or later.
+		 *
+		 * https://dev.to/yumetodo/list-of-mscver-and-mscfullver-8nd
+		 * has a *large* table of Microsoft product names, VC++ versions,
+		 * _MSC_VER values, and _MSC_FULL_VER values.  All the versions
+		 * we support define _MSC_FULL_VER.  We don't bother trying to
+		 * get the SP/update/version number from the build number, as
+		 * we'd have to keep updating that with every update; there's no
+		 * way to get that information directly from a predefine, and in
+		 * some cases multiple updates/versions have the *same* build
+		 * number (because they didn't update the toolchain).
+		 *
+		 * https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=vs-2017
+		 * defines the format of _MSC_VER and _MSC_FULL_VER.  _MSC_FULL_VER
+		 * is a decimal number of the form MMmmBBBBB, where MM is the compiler/
+		 * toolchain major version, mm is the minor version, and BBBBB is the
+		 * build.  We break it down based on that.
+		 */
+		#define COMPILER_MAJOR_VERSION (_MSC_FULL_VER / 10000000)
+		#define COMPILER_MINOR_VERSION ((_MSC_FULL_VER % 10000000) / 100000)
+		#define COMPILER_BUILD_NUMBER (_MSC_FULL_VER % 100000)
+
+		/*
+		 * From https://web.archive.org/web/20190125151548/https://blogs.msdn.microsoft.com/vcblog/2014/11/17/c111417-features-in-vs-2015-preview/
+		 * Bakersfield: DevDiv's upper management determines the scheduling
+		 * of new major versions.  They also decided to increment the product
+		 * version from 12 (for VS 2013) to 14 (for VS 2015).  However, the
+		 * C++ compiler's version incremented normally, from 18 to 19.
+		 * (It's larger because the C++ compiler predates the "Visual" in
+		 * Visual C++.)
+		 *
+		 * So the product version number is 5 less than the compiler version
+		 * number.
+		 */
+		#define VCPP_MAJOR_VERSION	(COMPILER_MAJOR_VERSION - 5)
+
+		#if VCPP_MAJOR_VERSION == 14
+			/*
+			 * From https://devblogs.microsoft.com/cppblog/side-by-side-minor-version-msvc-toolsets-in-visual-studio-2017/
+			 *
+			 * We've been delivering improvements to Visual Studio 2017 more
+			 * frequently than ever before. Since its first release in March
+			 * we've released four major updates to VS2017 and are currently
+			 * previewing the fifth update, VS2017 version 15.5.
+			 *
+			 * The MSVC toolset in VS2017 is built as a minor version update to
+			 * the VS2015 compiler toolset. This minor version bump indicates
+			 * that the VS2017 MSVC toolset is binary compatible with the VS2015
+			 * MSVC toolset, enabling an easier upgrade for VS2015 users. Even
+			 * though the MSVC compiler toolset in VS2017 delivers many new
+			 * features and conformance improvements it is a minor version,
+			 * compatible update from 14.00 in VS2015 to 14.10 in VS2017.
+			 */
+			#if COMPILER_MINOR_VERSION < 10
+				#define VS_VERSION	"2015"
+			#elif COMPILER_MINOR_VERSION < 20
+				#define VS_VERSION	"2017"
+			#else
+				#define VS_VERSION	"2019"
+			#endif
+		#else
+			/*
+			 * Add additional checks here, before the #else.
+			 */
+			#define VS_VERSION	"(unknown)"
+		#endif /* VCPP_MAJOR_VERSION */
+
+		/*
+		 * XXX - should we show the raw compiler version number, as is
+		 * shown by "cl /?", which would be %d.%d.%d.%d with
+		 * COMPILER_MAJOR_VERSION, COMPILER_MINOR_VERSION,
+		 * COMPILER_BUILD_NUMBER, and _MSC_BUILD, the last of which is
+		 * "the revision number element of the compiler's version number",
+		 * which I guess is not to be confused with the build number,
+		 * the _BUILD in the name nonwithstanding.
+		 */
+		g_string_append_printf(str, "Microsoft Visual Studio " VS_VERSION " (VC++ %d.%d, build %d)",
+			VCPP_MAJOR_VERSION, COMPILER_MINOR_VERSION, COMPILER_BUILD_NUMBER);
+		#if defined(__clang__)
+			/*
+			 * See above.
+			 */
+			g_string_append_printf(str, " clang/C2 %s and -fno-ms-compatibility",
+				__VERSION__);
+		#endif
+	#elif defined(__GNUC__) && defined(__VERSION__)
+		/*
+		 * Clang and llvm-gcc also define __GNUC__ and __VERSION__;
+		 * distinguish between them.
+		 */
+		#if defined(__clang__)
+			/* clang */
+			gchar *version; /* clang's version string has a trailing space. */
+			#if defined(__clang_version__)
+				version = g_strdup(__clang_version__);
+				g_string_append_printf(str, "Clang %s", g_strstrip(version));
+			#else
+				version = g_strdup(__VERSION__);
+				g_string_append_printf(str, "%s", g_strstrip(version));
+			#endif /* __clang_version__ */
+			g_free(version);
+		#elif defined(__llvm__)
+			/* llvm-gcc */
+			g_string_append_printf(str, "llvm-gcc %s", __VERSION__);
+		#else
+			/* boring old GCC */
+			g_string_append_printf(str, "GCC %s", __VERSION__);
+		#endif
+	#elif defined(__HP_aCC)
+		g_string_append_printf(str, "HP aCC %d", __HP_aCC);
+	#elif defined(__xlC__)
+		g_string_append_printf(str, "IBM XL C %d.%d",
+			(__xlC__ >> 8) & 0xFF, __xlC__ & 0xFF);
+		#ifdef __IBMC__
+			if ((__IBMC__ % 10) != 0)
+				g_string_append_printf(str, " patch %d", __IBMC__ % 10);
+		#endif /* __IBMC__ */
+	#elif defined(__INTEL_COMPILER)
+		g_string_append_printf(str, "Intel C %d.%d",
+			__INTEL_COMPILER / 100, (__INTEL_COMPILER / 10) % 10);
+		if ((__INTEL_COMPILER % 10) != 0)
+			g_string_append_printf(str, " patch %d", __INTEL_COMPILER % 10);
+		#ifdef __INTEL_COMPILER_BUILD_DATE
+			g_string_sprinta(str, ", compiler built %04d-%02d-%02d",
+				__INTEL_COMPILER_BUILD_DATE / 10000,
+				(__INTEL_COMPILER_BUILD_DATE / 100) % 100,
+				__INTEL_COMPILER_BUILD_DATE % 100);
+		#endif /* __INTEL_COMPILER_BUILD_DATE */
+	#elif defined(__SUNPRO_C)
+		g_string_append_printf(str, "Sun C %d.%d",
+			(__SUNPRO_C >> 8) & 0xF, (__SUNPRO_C >> 4) & 0xF);
+		if ((__SUNPRO_C & 0xF) != 0)
+			g_string_append_printf(str, " patch %d", __SUNPRO_C & 0xF);
+	#else
+		g_string_append(str, "unknown compiler");
+	#endif
+}
+
+/* XXX - is the setlocale() return string opaque? For glibc the separator is ';' */
+static gchar *
+get_locale(void)
+{
+	const gchar *lang;
+	gchar **locv, *loc;
+
+	lang = setlocale(LC_ALL, NULL);
+	if (lang == NULL) {
+		return NULL;
+	}
+
+	locv = g_strsplit(lang, ";", -1);
+	loc = g_strjoinv(", ", locv);
+	g_strfreev(locv);
+	return loc;
+}
+
+/*
+ * Get various library run-time versions, and the OS version, and append
+ * them to the specified GString.
+ *
+ * "additional_info" is called at the end to append any additional
+ * information; this is required in order to, for example, put the
+ * libcap information at the end of the string, as we currently
+ * don't use libcap in TShark.
+ */
+GString *
+get_runtime_version_info(void (*additional_info)(GString *))
+{
+	GString *str;
+	gchar *lang;
+
+	str = g_string_new("Running on ");
+
+	get_os_version_info(str);
+
+	/* CPU Info */
+	get_cpu_info(str);
+
+	/* Get info about installed memory */
+	get_mem_info(str);
+
+	/* GLib */
+	g_string_append_printf(str, ", with GLib %u.%u.%u",
+			glib_major_version, glib_minor_version, glib_micro_version);
+
+	/* zlib */
+#if defined(HAVE_ZLIB) && !defined(_WIN32)
+	g_string_append_printf(str, ", with zlib %s", zlibVersion());
+#endif
+
+	/* Additional application-dependent information */
+	if (additional_info)
+		(*additional_info)(str);
+
+	/*
+	 * Locale.
+	 *
+	 * This returns the C language's locale information; this
+	 * returns the locale that's actually in effect, even if
+	 * it doesn't happen to match the settings of any of the
+	 * locale environment variables.
+	 *
+	 * On Windows get_locale returns the full language, country
+	 * name, and code page, e.g. "English_United States.1252":
+	 * https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/setlocale-wsetlocale?view=vs-2019
+	 */
+	if ((lang = get_locale()) != NULL) {
+		g_string_append_printf(str, ", with locale %s", lang);
+		g_free(lang);
+	}
+	else {
+		g_string_append(str, ", with default locale");
+	}
+
+	/* plugins */
+#ifdef HAVE_PLUGINS
+	if (g_module_supported()) {
+		g_string_append_printf(str, ", binary plugins supported (%d loaded)", plugins_get_count());
+	}
+	else {
+		g_string_append(str, ", binary plugins not supported by the platform");
+	}
+#else
+	g_string_append(str, ", built without support for binary plugins");
+#endif
+
+	g_string_append(str, ".");
+
+	end_string(str);
+
+	return str;
+}
+
+/*
+ * Return a version number string for Wireshark, including, for builds
+ * from a tree checked out from Wireshark's version control system,
+ * something identifying what version was checked out.
+ */
+const char *
+get_ws_vcs_version_info(void)
+{
+#ifdef VCSVERSION
+	return VERSION " (" VCSVERSION ")";
+#else
+	return VERSION;
+#endif
+}
+
+const char *
+get_ws_vcs_version_info_short(void)
+{
+#ifdef VCSVERSION
+	return VCSVERSION;
+#else
+	return VERSION;
+#endif
+}
+
+void
+get_ws_version_number(int *major, int *minor, int *micro)
+{
+	if (major)
+		*major = VERSION_MAJOR;
+	if (minor)
+		*minor = VERSION_MINOR;
+	if (micro)
+		*micro = VERSION_MICRO;
+}
+
+void
+show_version(void)
+{
+	printf("%s\n"
+			"\n"
+			"%s\n"
+			"%s\n"
+			"%s",
+			appname_with_version, get_copyright_info(),
+			comp_info, runtime_info);
+}
+
+void
+show_help_header(const char *description)
+{
+	printf("%s\n"
+		"%s\n"
+		"See https://www.wireshark.org for more information.\n",
+		appname_with_version, description);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vi: set shiftwidth=8 tabstop=8 noexpandtab:
+ * :indentSize=8:tabSize=8:noTabs=false:
+ */
diff --git a/ui/version_info.h b/ui/version_info.h
new file mode 100644
index 0000000000..d16bb3cfbf
--- /dev/null
+++ b/ui/version_info.h
@@ -0,0 +1,117 @@
+/* version_info.h
+ * Declarations of routines to report version information for Wireshark
+ * programs
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef __WS_VERSION_INFO_H__
+#define __WS_VERSION_INFO_H__
+
+#include <glib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/*
+ * Initialize information about the program for various purposes, including
+ * reporting the version and build information for the program, putting
+ * that information into crash dumps if possible, and giving the program
+ * name and version information into capture files written by the program
+ * if possible.
+ *
+ * "appname" is a string that appears at the beginning of the information;
+ * it should include the application name, followed by "(Wireshark)" if
+ * the program isn't Wireshark.
+ *
+ * "prepend_compile_time_info" is called at the start to prepend any
+ * additional build information before the standard library information.
+ *
+ * "append_compile_time_info" is called at the end to append any additional
+ * build information after the standard library information.  This is
+ * required in order to, for example, put Qt information at the
+ * end of the string, as we don't use Qt in TShark.
+ *
+ * "additional_info" is called at the end to append any additional
+ * run-time information; this is required in order to, for example,
+ * put the libcap information at the end of the string, as we currently
+ * don't use libcap in TShark.
+ */
+void ws_init_version_info(const char *appname,
+    void (*prepend_compile_time_info)(GString *),
+    void (*append_compile_time_info)(GString *),
+    void (*additional_run_time_info)(GString *));
+
+/*
+ * Get a string giving the application name, as provided to
+ * ws_init_version_info(), followed by a string giving the
+ * application version.
+ */
+const char *get_appname_and_version(void);
+
+/*
+ * Get various library compile-time versions, put them in a GString,
+ * and return the GString.
+ *
+ * "prepend_info" is called at the start to prepend any additional
+ * information before the standard library information.
+ *
+ * "append_info" is called at the end to append any additional
+ * information after the standard library information.  This is
+ * required in order to, for example, put Qt information at the
+ * end of the string, as we don't use Qt in TShark.
+ */
+GString *get_compiled_version_info(void (*prepend_info)(GString *),
+                                                 void (*append_info)(GString *));
+
+/*
+ * Get various library run-time versions, and the OS version, put them in
+ * a GString, and return the GString.
+ *
+ * "additional_info" is called at the end to append any additional
+ * information; this is required in order to, for example, put the
+ * libcap information at the end of the string, as we currently
+ * don't use libcap in TShark.
+ */
+GString *get_runtime_version_info(void (*additional_info)(GString *));
+
+/*
+ * Return a version number string for Wireshark, including, for builds
+ * from a tree checked out from Wireshark's version control system,
+ * something identifying what version was checked out.
+ */
+const char *get_ws_vcs_version_info(void);
+
+/*
+ * Shorter version of get_ws_vcs_version_info().
+ */
+const char *get_ws_vcs_version_info_short(void);
+
+/*
+ * Return version number as integers.
+ */
+void get_ws_version_number(int *major, int *minor, int *micro);
+
+/*
+ * Show the program name and version number information on the standard
+ * output; this is used for command-line "show the version" options.
+ */
+void show_version(void);
+
+/*
+ * Show the program name and version number information, a supplied
+ * description string, and a "See {URL} for more information" message.
+ * This is used for command-line "help" options.
+ */
+void show_help_header(const char *description);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __WS_VERSION_INFO_H__ */