Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 475 insertions, 0 deletions

diff --git a/sharkd_daemon.c b/sharkd_daemon.c
new file mode 100644
index 00000000..346f87b7
--- /dev/null
+++ b/sharkd_daemon.c
@@ -0,0 +1,475 @@
+/* sharkd_daemon.c
+ *
+ * Copyright (C) 2016 Jakub Zawadzki
+ *
+ * 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>
+#define WS_LOG_DOMAIN LOG_DOMAIN_MAIN
+
+#include <glib.h>
+
+#include <stdio.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <signal.h>
+
+#ifdef _WIN32
+#include <wsutil/unicode-utils.h>
+#include <wsutil/win32-utils.h>
+#endif
+
+#include <wsutil/filesystem.h>
+#include <wsutil/socket.h>
+#include <wsutil/inet_addr.h>
+#include <wsutil/please_report_bug.h>
+#include <wsutil/wslog.h>
+#include <wsutil/ws_getopt.h>
+
+#ifndef _WIN32
+#include <sys/un.h>
+#include <netinet/tcp.h>
+#endif
+
+#include <wsutil/strtoi.h>
+#include <wsutil/version_info.h>
+
+#include "sharkd.h"
+
+#ifdef _WIN32
+/* for windows support TCP sockets */
+# define SHARKD_TCP_SUPPORT
+#else
+/* for other system support only local sockets */
+# define SHARKD_UNIX_SUPPORT
+#endif
+
+static int mode = 0;
+static socket_handle_t _server_fd = INVALID_SOCKET;
+
+static socket_handle_t
+socket_init(char *path)
+{
+    socket_handle_t fd = INVALID_SOCKET;
+    char *err_msg;
+
+    err_msg = ws_init_sockets();
+    if (err_msg != NULL) {
+        ws_warning("ERROR: %s", err_msg);
+        g_free(err_msg);
+        ws_warning("%s", please_report_bug());
+        return fd;
+    }
+
+#ifdef SHARKD_UNIX_SUPPORT
+    if (!strncmp(path, "unix:", 5))
+    {
+        struct sockaddr_un s_un;
+        socklen_t s_un_len;
+
+        path += 5;
+
+        if (strlen(path) + 1 > sizeof(s_un.sun_path))
+            return INVALID_SOCKET;
+
+        fd = socket(AF_UNIX, SOCK_STREAM, 0);
+        if (fd == INVALID_SOCKET)
+            return INVALID_SOCKET;
+
+        memset(&s_un, 0, sizeof(s_un));
+        s_un.sun_family = AF_UNIX;
+        (void) g_strlcpy(s_un.sun_path, path, sizeof(s_un.sun_path));
+
+        s_un_len = (socklen_t)(offsetof(struct sockaddr_un, sun_path) + strlen(s_un.sun_path));
+
+        if (s_un.sun_path[0] == '@')
+            s_un.sun_path[0] = '\0';
+
+        if (bind(fd, (struct sockaddr *) &s_un, s_un_len))
+        {
+            closesocket(fd);
+            return INVALID_SOCKET;
+        }
+    }
+    else
+#endif
+
+#ifdef SHARKD_TCP_SUPPORT
+    if (!strncmp(path, "tcp:", 4))
+    {
+        struct sockaddr_in s_in;
+        int one = 1;
+        char *port_sep;
+        guint16 port;
+
+        path += 4;
+
+        port_sep = strchr(path, ':');
+        if (!port_sep)
+            return INVALID_SOCKET;
+
+        *port_sep = '\0';
+
+        if (ws_strtou16(port_sep + 1, NULL, &port) == FALSE)
+            return INVALID_SOCKET;
+
+#ifdef _WIN32
+        /* Need to use WSASocket() to disable overlapped I/O operations,
+            this way on windows SOCKET can be used as HANDLE for stdin/stdout */
+        fd = WSASocket(AF_INET, SOCK_STREAM, 0, NULL, 0, 0);
+#else
+        fd = socket(AF_INET, SOCK_STREAM, 0);
+#endif
+        if (fd == INVALID_SOCKET)
+            return INVALID_SOCKET;
+
+        s_in.sin_family = AF_INET;
+        ws_inet_pton4(path, (ws_in4_addr *)&(s_in.sin_addr.s_addr));
+        s_in.sin_port = g_htons(port);
+        *port_sep = ':';
+
+        setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *) &one, sizeof(one));
+
+        if (bind(fd, (struct sockaddr *) &s_in, sizeof(struct sockaddr_in)))
+        {
+            closesocket(fd);
+            return INVALID_SOCKET;
+        }
+    }
+    else
+#endif
+    {
+        return INVALID_SOCKET;
+    }
+
+    if (listen(fd, SOMAXCONN))
+    {
+        closesocket(fd);
+        return INVALID_SOCKET;
+    }
+
+    return fd;
+}
+
+static void
+print_usage(FILE* output)
+{
+    fprintf(output, "\n");
+    fprintf(output, "Usage: sharkd [<classic_options>|<gold_options>]\n");
+
+    fprintf(output, "\n");
+    fprintf(output, "Classic (classic_options):\n");
+    fprintf(output, "  [-|<socket>]\n");
+    fprintf(output, "\n");
+    fprintf(output, "  <socket> examples:\n");
+#ifdef SHARKD_UNIX_SUPPORT
+    fprintf(output, "  - unix:/tmp/sharkd.sock - listen on unix file /tmp/sharkd.sock\n");
+#endif
+#ifdef SHARKD_TCP_SUPPORT
+    fprintf(output, "  - tcp:127.0.0.1:4446 - listen on TCP port 4446\n");
+#endif
+
+    fprintf(output, "\n");
+    fprintf(output, "Gold (gold_options):\n");
+    fprintf(output, "  -a <socket>, --api <socket>\n");
+    fprintf(output, "                           listen on this socket\n");
+    fprintf(output, "  -h, --help               show this help information\n");
+    fprintf(output, "  -v, --version            show version information\n");
+    fprintf(output, "  -C <config profile>, --config-profile <config profile>\n");
+    fprintf(output, "                           start with specified configuration profile\n");
+
+    fprintf(output, "\n");
+    fprintf(output, "  Examples:\n");
+    fprintf(output, "    sharkd -C myprofile\n");
+    fprintf(output, "    sharkd -a tcp:127.0.0.1:4446 -C myprofile\n");
+
+    fprintf(output, "\n");
+    fprintf(output, "See the sharkd page of the Wireshark wiki for full details.\n");
+    fprintf(output, "\n");
+}
+
+int
+sharkd_init(int argc, char **argv)
+{
+    /*
+     * The leading + ensures that getopt_long() does not permute the argv[]
+     * entries.
+     *
+     * We have to make sure that the first getopt_long() preserves the content
+     * of argv[] for the subsequent getopt_long() call.
+     *
+     * We use getopt_long() in both cases to ensure that we're using a routine
+     * whose permutation behavior we can control in the same fashion on all
+     * platforms, and so that, if we ever need to process a long argument before
+     * doing further initialization, we can do so.
+     *
+     * Glibc and Solaris libc document that a leading + disables permutation
+     * of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
+     * and macOS don't document it, but do so anyway.
+     *
+     * We do *not* use a leading - because the behavior of a leading - is
+     * platform-dependent.
+     */
+
+#define OPTSTRING "+" "a:hmvC:"
+
+    static const char    optstring[] = OPTSTRING;
+
+    // right now we don't have any long options
+    static const struct ws_option long_options[] = {
+        {"api", ws_required_argument, NULL, 'a'},
+        {"help", ws_no_argument, NULL, 'h'},
+        {"version", ws_no_argument, NULL, 'v'},
+        {"config-profile", ws_required_argument, NULL, 'C'},
+        {0, 0, 0, 0 }
+    };
+
+    int opt;
+
+#ifndef _WIN32
+    pid_t pid;
+#endif
+    socket_handle_t fd;
+
+    if (argc < 2)
+    {
+        print_usage(stderr);
+        return -1;
+    }
+
+    // check for classic command line
+    if (!strcmp(argv[1], "-") || argv[1][0] == 't' || argv[1][0] == 'u')
+    {
+        mode = SHARKD_MODE_CLASSIC_CONSOLE;
+
+#ifndef _WIN32
+        signal(SIGCHLD, SIG_IGN);
+#endif
+
+        if (!strcmp(argv[1], "-"))
+        {
+            mode = SHARKD_MODE_CLASSIC_CONSOLE;
+        }
+        else
+        {
+            fd = socket_init(argv[1]);
+            if (fd == INVALID_SOCKET)
+                return -1;
+            _server_fd = fd;
+            mode = SHARKD_MODE_CLASSIC_DAEMON;
+        }
+    }
+    else
+        mode = SHARKD_MODE_GOLD_CONSOLE;  // assume we are running as gold console
+
+    if (mode >= SHARKD_MODE_GOLD_CONSOLE)
+    {
+        /*
+           In Daemon Mode, we will come through here twice; once when we start the Daemon and
+           once again after we have forked the session process.  The second time through, the
+           session process has already had its stdin and stdout wired up to the TCP or UNIX
+           socket and so in the original version of sharkd the session process is invoked with
+           the command line: sharkd -
+
+           When not using the classic command line, we want to spawn the session process with
+           the complete command line with all the new options but with the -a option and
+           parameter removed.  Invoking a second time with the -a option will cause a loop
+           where we repeatedly spawn a new session process.
+           */
+
+        do {
+            if (ws_optind > (argc - 1))
+                break;
+
+            opt = ws_getopt_long(argc, argv, optstring, long_options, NULL);
+
+            switch (opt) {
+                case 'C':        /* Configuration Profile */
+                    if (profile_exists(ws_optarg, FALSE)) {
+                        set_profile_name(ws_optarg);  // In Daemon Mode, we may need to do this again in the child process
+                    }
+                    else {
+                        fprintf(stderr, "Configuration Profile \"%s\" does not exist\n", ws_optarg);
+                        return -1;
+                    }
+                    break;
+
+                case 'a':
+                    fd = socket_init(ws_optarg);
+                    if (fd == INVALID_SOCKET)
+                        return -1;
+                    _server_fd = fd;
+
+                    fprintf(stderr, "Sharkd listening on: %s\n", ws_optarg);
+
+                    mode = SHARKD_MODE_GOLD_DAEMON;
+                    break;
+
+                case 'h':
+                    show_help_header("Daemon variant of Wireshark");
+                    print_usage(stderr);
+                    exit(0);
+                    break;
+
+                case 'm':
+                    // m is an internal-only option used when the daemon session process is created
+                    mode = SHARKD_MODE_GOLD_CONSOLE;
+                    break;
+
+                case 'v':         /* Show version and exit */
+                    show_version();
+                    exit(0);
+                    break;
+
+                default:
+                    if (!ws_optopt)
+                        fprintf(stderr, "This option isn't supported: %s\n", argv[ws_optind]);
+                    fprintf(stderr, "Use sharkd -h for details of supported options\n");
+                    exit(0);
+                    break;
+            }
+        } while (opt != -1);
+    }
+
+    if (mode == SHARKD_MODE_CLASSIC_DAEMON || mode == SHARKD_MODE_GOLD_DAEMON)
+    {
+        /* all good - try to daemonize */
+#ifndef _WIN32
+        pid = fork();
+        if (pid == -1)
+            fprintf(stderr, "cannot go to background fork() failed: %s\n", g_strerror(errno));
+
+        if (pid != 0)
+        {
+            /* parent */
+            exit(0);
+        }
+#endif
+    }
+
+    return 0;
+}
+
+int
+#ifndef _WIN32
+sharkd_loop(int argc _U_, char* argv[] _U_)
+#else
+sharkd_loop(int argc _U_, char* argv[])
+#endif
+{
+    if (mode == SHARKD_MODE_CLASSIC_CONSOLE || mode == SHARKD_MODE_GOLD_CONSOLE)
+    {
+        return sharkd_session_main(mode);
+    }
+
+    while (1)
+    {
+#ifndef _WIN32
+        pid_t pid;
+#else
+        size_t i_handles;
+        HANDLE handles[2];
+        PROCESS_INFORMATION pi;
+        STARTUPINFO si;
+        char *exename;
+        char command_line[2048];
+#endif
+        socket_handle_t fd;
+
+        fd = accept(_server_fd, NULL, NULL);
+        if (fd == INVALID_SOCKET)
+        {
+            fprintf(stderr, "cannot accept(): %s\n", g_strerror(errno));
+            continue;
+        }
+
+        /* wireshark is not ready for handling multiple capture files in single process, so fork(), and handle it in separate process */
+#ifndef _WIN32
+        pid = fork();
+        if (pid == 0)
+        {
+            closesocket(_server_fd);
+            /* redirect stdin, stdout to socket */
+            dup2(fd, 0);
+            dup2(fd, 1);
+            close(fd);
+
+            exit(sharkd_session_main(mode));
+        }
+
+        if (pid == -1)
+        {
+            fprintf(stderr, "cannot fork(): %s\n", g_strerror(errno));
+        }
+
+#else
+        memset(&pi, 0, sizeof(pi));
+        memset(&si, 0, sizeof(si));
+
+        si.cb = sizeof(si);
+        si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
+        si.hStdInput = (HANDLE) fd;
+        si.hStdOutput = (HANDLE) fd;
+        si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
+
+        i_handles = 0;
+        handles[i_handles++] = (HANDLE)fd;
+        if (si.hStdError != NULL) {
+            handles[i_handles++] = si.hStdError;
+        }
+
+        exename = get_executable_path("sharkd");
+
+        // we need to pass in all of the command line parameters except the -a parameter
+        // passing in -a at this point would could a loop, each iteration of which would generate a new session process
+        memset(&command_line, 0, sizeof(command_line));
+
+        if (mode <= SHARKD_MODE_CLASSIC_DAEMON)
+        {
+            (void) g_strlcat(command_line, "sharkd.exe -", sizeof(command_line));
+        }
+        else
+        {
+            // The -m option used here is an internal-only option that notifies the child process that it should
+            // run in Gold Console mode
+            (void) g_strlcat(command_line, "sharkd.exe -m", sizeof(command_line));
+
+            for (int i = 1; i < argc; i++)
+            {
+                if (
+                        !g_ascii_strncasecmp(argv[i], "-a", (guint)strlen(argv[i]))
+                        || !g_ascii_strncasecmp(argv[i], "--api", (guint)strlen(argv[i]))
+                   )
+                {
+                    i++;  // skip the socket details
+                }
+                else
+                {
+                    (void) g_strlcat(command_line, " ", sizeof(command_line));
+                    (void) g_strlcat(command_line, argv[i], sizeof(command_line));
+                }
+            }
+        }
+
+        if (!win32_create_process(exename, command_line, NULL, NULL, i_handles, handles, 0, NULL, NULL, &si, &pi))
+        {
+            fprintf(stderr, "win32_create_process(%s) failed\n", exename);
+        }
+        else
+        {
+            CloseHandle(pi.hThread);
+        }
+
+        g_free(exename);
+#endif
+
+        closesocket(fd);
+    }
+    return 0;
+}