Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

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

2 files changed, 1696 insertions, 0 deletions

diff --git a/testing/mochitest/ssltunnel/moz.build b/testing/mochitest/ssltunnel/moz.build
new file mode 100644
index 0000000000..f9f6227153
--- /dev/null
+++ b/testing/mochitest/ssltunnel/moz.build
@@ -0,0 +1,20 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+GeckoProgram("ssltunnel", linkage=None)
+
+SOURCES += [
+    "ssltunnel.cpp",
+]
+
+USE_LIBS += [
+    "nspr",
+    "nss",
+]
+
+# This isn't XPCOM code, but it wants to use STL, so disable the STL
+# wrappers
+DisableStlWrapping()
diff --git a/testing/mochitest/ssltunnel/ssltunnel.cpp b/testing/mochitest/ssltunnel/ssltunnel.cpp
new file mode 100644
index 0000000000..e2377fcdf3
--- /dev/null
+++ b/testing/mochitest/ssltunnel/ssltunnel.cpp
@@ -0,0 +1,1676 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * WARNING: DO NOT USE THIS CODE IN PRODUCTION SYSTEMS.  It is highly likely to
+ *          be plagued with the usual problems endemic to C (buffer overflows
+ *          and the like).  We don't especially care here (but would accept
+ *          patches!) because this is only intended for use in our test
+ *          harnesses in controlled situations where input is guaranteed not to
+ *          be malicious.
+ */
+
+#include "ScopedNSSTypes.h"
+#include <assert.h>
+#include <stdio.h>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <stdarg.h>
+#include "prinit.h"
+#include "prerror.h"
+#include "prenv.h"
+#include "prnetdb.h"
+#include "prtpool.h"
+#include "nsAlgorithm.h"
+#include "nss.h"
+#include "keyhi.h"
+#include "ssl.h"
+#include "sslproto.h"
+#include "plhash.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/Unused.h"
+
+using namespace mozilla;
+using namespace mozilla::psm;
+using std::string;
+using std::vector;
+
+#define IS_DELIM(m, c) ((m)[(c) >> 3] & (1 << ((c)&7)))
+#define SET_DELIM(m, c) ((m)[(c) >> 3] |= (1 << ((c)&7)))
+#define DELIM_TABLE_SIZE 32
+
+// You can set the level of logging by env var SSLTUNNEL_LOG_LEVEL=n, where n
+// is 0 through 3.  The default is 1, INFO level logging.
+enum LogLevel {
+  LEVEL_DEBUG = 0,
+  LEVEL_INFO = 1,
+  LEVEL_ERROR = 2,
+  LEVEL_SILENT = 3
+} gLogLevel,
+    gLastLogLevel;
+
+#define _LOG_OUTPUT(level, func, params) \
+  PR_BEGIN_MACRO                         \
+  if (level >= gLogLevel) {              \
+    gLastLogLevel = level;               \
+    func params;                         \
+  }                                      \
+  PR_END_MACRO
+
+// The most verbose output
+#define LOG_DEBUG(params) _LOG_OUTPUT(LEVEL_DEBUG, printf, params)
+
+// Top level informative messages
+#define LOG_INFO(params) _LOG_OUTPUT(LEVEL_INFO, printf, params)
+
+// Serious errors that must be logged always until completely gag
+#define LOG_ERROR(params) _LOG_OUTPUT(LEVEL_ERROR, eprintf, params)
+
+// Same as LOG_ERROR, but when logging is set to LEVEL_DEBUG, the message
+// will be put to the stdout instead of stderr to keep continuity with other
+// LOG_DEBUG message output
+#define LOG_ERRORD(params)                     \
+  PR_BEGIN_MACRO                               \
+  if (gLogLevel == LEVEL_DEBUG)                \
+    _LOG_OUTPUT(LEVEL_ERROR, printf, params);  \
+  else                                         \
+    _LOG_OUTPUT(LEVEL_ERROR, eprintf, params); \
+  PR_END_MACRO
+
+// If there is any output written between LOG_BEGIN_BLOCK() and
+// LOG_END_BLOCK() then a new line will be put to the proper output (out/err)
+#define LOG_BEGIN_BLOCK() gLastLogLevel = LEVEL_SILENT;
+
+#define LOG_END_BLOCK()                                                        \
+  PR_BEGIN_MACRO                                                               \
+  if (gLastLogLevel == LEVEL_ERROR) LOG_ERROR(("\n"));                         \
+  if (gLastLogLevel < LEVEL_ERROR) _LOG_OUTPUT(gLastLogLevel, printf, ("\n")); \
+  PR_END_MACRO
+
+int eprintf(const char* str, ...) {
+  va_list ap;
+  va_start(ap, str);
+  int result = vfprintf(stderr, str, ap);
+  va_end(ap);
+  return result;
+}
+
+// Copied from nsCRT
+char* strtok2(char* string, const char* delims, char** newStr) {
+  PR_ASSERT(string);
+
+  char delimTable[DELIM_TABLE_SIZE];
+  uint32_t i;
+  char* result;
+  char* str = string;
+
+  for (i = 0; i < DELIM_TABLE_SIZE; i++) delimTable[i] = '\0';
+
+  for (i = 0; delims[i]; i++) {
+    SET_DELIM(delimTable, static_cast<uint8_t>(delims[i]));
+  }
+
+  // skip to beginning
+  while (*str && IS_DELIM(delimTable, static_cast<uint8_t>(*str))) {
+    str++;
+  }
+  result = str;
+
+  // fix up the end of the token
+  while (*str) {
+    if (IS_DELIM(delimTable, static_cast<uint8_t>(*str))) {
+      *str++ = '\0';
+      break;
+    }
+    str++;
+  }
+  *newStr = str;
+
+  return str == result ? nullptr : result;
+}
+
+enum client_auth_option { caNone = 0, caRequire = 1, caRequest = 2 };
+
+// Structs for passing data into jobs on the thread pool
+struct server_info_t {
+  int32_t listen_port;
+  string cert_nickname;
+  PLHashTable* host_cert_table;
+  PLHashTable* host_clientauth_table;
+  PLHashTable* host_redir_table;
+  PLHashTable* host_ssl3_table;
+  PLHashTable* host_tls1_table;
+  PLHashTable* host_tls11_table;
+  PLHashTable* host_tls12_table;
+  PLHashTable* host_tls13_table;
+  PLHashTable* host_3des_table;
+  PLHashTable* host_failhandshake_table;
+};
+
+struct connection_info_t {
+  PRFileDesc* client_sock;
+  PRNetAddr client_addr;
+  server_info_t* server_info;
+  // the original host in the Host: header for this connection is
+  // stored here, for proxied connections
+  string original_host;
+  // true if no SSL should be used for this connection
+  bool http_proxy_only;
+  // true if this connection is for a WebSocket
+  bool iswebsocket;
+};
+
+struct server_match_t {
+  string fullHost;
+  bool matched;
+};
+
+const int32_t BUF_SIZE = 16384;
+const int32_t BUF_MARGIN = 1024;
+const int32_t BUF_TOTAL = BUF_SIZE + BUF_MARGIN;
+
+struct relayBuffer {
+  char *buffer, *bufferhead, *buffertail, *bufferend;
+
+  relayBuffer() {
+    // Leave 1024 bytes more for request line manipulations
+    bufferhead = buffertail = buffer = new char[BUF_TOTAL];
+    bufferend = buffer + BUF_SIZE;
+  }
+
+  ~relayBuffer() { delete[] buffer; }
+
+  void compact() {
+    if (buffertail == bufferhead) buffertail = bufferhead = buffer;
+  }
+
+  bool empty() { return bufferhead == buffertail; }
+  size_t areafree() { return bufferend - buffertail; }
+  size_t margin() { return areafree() + BUF_MARGIN; }
+  size_t present() { return buffertail - bufferhead; }
+};
+
+// These numbers are multiplied by the number of listening ports (actual
+// servers running).  According the thread pool implementation there is no
+// need to limit the number of threads initially, threads are allocated
+// dynamically and stored in a linked list.  Initial number of 2 is chosen
+// to allocate a thread for socket accept and preallocate one for the first
+// connection that is with high probability expected to come.
+const uint32_t INITIAL_THREADS = 2;
+const uint32_t MAX_THREADS = 100;
+const uint32_t DEFAULT_STACKSIZE = (512 * 1024);
+
+// global data
+string nssconfigdir;
+vector<server_info_t> servers;
+PRNetAddr remote_addr;
+PRNetAddr websocket_server;
+PRThreadPool* threads = nullptr;
+PRLock* shutdown_lock = nullptr;
+PRCondVar* shutdown_condvar = nullptr;
+// Not really used, unless something fails to start
+bool shutdown_server = false;
+bool do_http_proxy = false;
+bool any_host_spec_config = false;
+bool listen_public = false;
+
+int ClientAuthValueComparator(const void* v1, const void* v2) {
+  int a = *static_cast<const client_auth_option*>(v1) -
+          *static_cast<const client_auth_option*>(v2);
+  if (a == 0) return 0;
+  if (a > 0) return 1;
+  // (a < 0)
+  return -1;
+}
+
+static int match_hostname(PLHashEntry* he, int index, void* arg) {
+  server_match_t* match = (server_match_t*)arg;
+  if (match->fullHost.find((char*)he->key) != string::npos)
+    match->matched = true;
+  return HT_ENUMERATE_NEXT;
+}
+
+/*
+ * Signal the main thread that the application should shut down.
+ */
+void SignalShutdown() {
+  PR_Lock(shutdown_lock);
+  PR_NotifyCondVar(shutdown_condvar);
+  PR_Unlock(shutdown_lock);
+}
+
+// available flags
+enum {
+  USE_SSL3 = 1 << 0,
+  USE_3DES = 1 << 1,
+  FAIL_HANDSHAKE = 1 << 2,
+  USE_TLS1 = 1 << 3,
+  USE_TLS1_1 = 1 << 4,
+  USE_TLS1_2 = 1 << 5,
+  USE_TLS1_3 = 1 << 6
+};
+
+bool ReadConnectRequest(server_info_t* server_info, relayBuffer& buffer,
+                        int32_t* result, string& certificate,
+                        client_auth_option* clientauth, string& host,
+                        string& location, int32_t* flags) {
+  if (buffer.present() < 4) {
+    LOG_DEBUG(
+        (" !! only %d bytes present in the buffer", (int)buffer.present()));
+    return false;
+  }
+  if (strncmp(buffer.buffertail - 4, "\r\n\r\n", 4)) {
+    LOG_ERRORD((" !! request is not tailed with CRLFCRLF but with %x %x %x %x",
+                *(buffer.buffertail - 4), *(buffer.buffertail - 3),
+                *(buffer.buffertail - 2), *(buffer.buffertail - 1)));
+    return false;
+  }
+
+  LOG_DEBUG((" parsing initial connect request, dump:\n%.*s\n",
+             (int)buffer.present(), buffer.bufferhead));
+
+  *result = 400;
+
+  char* token;
+  char* _caret;
+  token = strtok2(buffer.bufferhead, " ", &_caret);
+  if (!token) {
+    LOG_ERRORD((" no space found"));
+    return true;
+  }
+  if (strcmp(token, "CONNECT")) {
+    LOG_ERRORD((" not CONNECT request but %s", token));
+    return true;
+  }
+
+  token = strtok2(_caret, " ", &_caret);
+  void* c = PL_HashTableLookup(server_info->host_cert_table, token);
+  if (c) certificate = static_cast<char*>(c);
+
+  host = "https://";
+  host += token;
+
+  c = PL_HashTableLookup(server_info->host_clientauth_table, token);
+  if (c)
+    *clientauth = *static_cast<client_auth_option*>(c);
+  else
+    *clientauth = caNone;
+
+  void* redir = PL_HashTableLookup(server_info->host_redir_table, token);
+  if (redir) location = static_cast<char*>(redir);
+
+  if (PL_HashTableLookup(server_info->host_ssl3_table, token)) {
+    *flags |= USE_SSL3;
+  }
+
+  if (PL_HashTableLookup(server_info->host_3des_table, token)) {
+    *flags |= USE_3DES;
+  }
+
+  if (PL_HashTableLookup(server_info->host_tls1_table, token)) {
+    *flags |= USE_TLS1;
+  }
+
+  if (PL_HashTableLookup(server_info->host_tls11_table, token)) {
+    *flags |= USE_TLS1_1;
+  }
+
+  if (PL_HashTableLookup(server_info->host_tls12_table, token)) {
+    *flags |= USE_TLS1_2;
+  }
+
+  if (PL_HashTableLookup(server_info->host_tls13_table, token)) {
+    *flags |= USE_TLS1_3;
+  }
+
+  if (PL_HashTableLookup(server_info->host_failhandshake_table, token)) {
+    *flags |= FAIL_HANDSHAKE;
+  }
+
+  token = strtok2(_caret, "/", &_caret);
+  if (strcmp(token, "HTTP")) {
+    LOG_ERRORD((" not tailed with HTTP but with %s", token));
+    return true;
+  }
+
+  *result = (redir) ? 302 : 200;
+  return true;
+}
+
+bool ConfigureSSLServerSocket(PRFileDesc* socket, server_info_t* si,
+                              const string& certificate,
+                              const client_auth_option clientAuth,
+                              int32_t flags) {
+  const char* certnick =
+      certificate.empty() ? si->cert_nickname.c_str() : certificate.c_str();
+
+  UniqueCERTCertificate cert(PK11_FindCertFromNickname(certnick, nullptr));
+  if (!cert) {
+    LOG_ERROR(("Failed to find cert %s\n", certnick));
+    return false;
+  }
+
+  UniqueSECKEYPrivateKey privKey(PK11_FindKeyByAnyCert(cert.get(), nullptr));
+  if (!privKey) {
+    LOG_ERROR(("Failed to find private key\n"));
+    return false;
+  }
+
+  PRFileDesc* ssl_socket = SSL_ImportFD(nullptr, socket);
+  if (!ssl_socket) {
+    LOG_ERROR(("Error importing SSL socket\n"));
+    return false;
+  }
+
+  if (flags & FAIL_HANDSHAKE) {
+    // deliberately cause handshake to fail by sending the client a client hello
+    SSL_ResetHandshake(ssl_socket, false);
+    return true;
+  }
+
+  SSLKEAType certKEA = NSS_FindCertKEAType(cert.get());
+  if (SSL_ConfigSecureServer(ssl_socket, cert.get(), privKey.get(), certKEA) !=
+      SECSuccess) {
+    LOG_ERROR(("Error configuring SSL server socket\n"));
+    return false;
+  }
+
+  SSL_OptionSet(ssl_socket, SSL_SECURITY, true);
+  SSL_OptionSet(ssl_socket, SSL_HANDSHAKE_AS_CLIENT, false);
+  SSL_OptionSet(ssl_socket, SSL_HANDSHAKE_AS_SERVER, true);
+  SSL_OptionSet(ssl_socket, SSL_ENABLE_SESSION_TICKETS, true);
+
+  if (clientAuth != caNone) {
+    // If we're requesting or requiring a client certificate, we should
+    // configure NSS to include the "certificate_authorities" field in the
+    // certificate request message. That way we can test that gecko properly
+    // takes note of it.
+    UniqueCERTCertificate issuer(
+        CERT_FindCertIssuer(cert.get(), PR_Now(), certUsageAnyCA));
+    if (!issuer) {
+      LOG_DEBUG(("Failed to find issuer for %s\n", certnick));
+      return false;
+    }
+    UniqueCERTCertList issuerList(CERT_NewCertList());
+    if (!issuerList) {
+      LOG_ERROR(("Failed to allocate new CERTCertList\n"));
+      return false;
+    }
+    if (CERT_AddCertToListTail(issuerList.get(), issuer.get()) != SECSuccess) {
+      LOG_ERROR(("Failed to add issuer to issuerList\n"));
+      return false;
+    }
+    Unused << issuer.release();  // Ownership transferred to issuerList.
+    if (SSL_SetTrustAnchors(ssl_socket, issuerList.get()) != SECSuccess) {
+      LOG_ERROR(
+          ("Failed to set certificate_authorities list for client "
+           "authentication\n"));
+      return false;
+    }
+    SSL_OptionSet(ssl_socket, SSL_REQUEST_CERTIFICATE, true);
+    SSL_OptionSet(ssl_socket, SSL_REQUIRE_CERTIFICATE, clientAuth == caRequire);
+  }
+
+  SSLVersionRange range = {SSL_LIBRARY_VERSION_TLS_1_3,
+                           SSL_LIBRARY_VERSION_3_0};
+  if (flags & USE_SSL3) {
+    range.min = PR_MIN(range.min, SSL_LIBRARY_VERSION_3_0);
+    range.max = PR_MAX(range.max, SSL_LIBRARY_VERSION_3_0);
+  }
+  if (flags & USE_TLS1) {
+    range.min = PR_MIN(range.min, SSL_LIBRARY_VERSION_TLS_1_0);
+    range.max = PR_MAX(range.max, SSL_LIBRARY_VERSION_TLS_1_0);
+  }
+  if (flags & USE_TLS1_1) {
+    range.min = PR_MIN(range.min, SSL_LIBRARY_VERSION_TLS_1_1);
+    range.max = PR_MAX(range.max, SSL_LIBRARY_VERSION_TLS_1_1);
+  }
+  if (flags & USE_TLS1_2) {
+    range.min = PR_MIN(range.min, SSL_LIBRARY_VERSION_TLS_1_2);
+    range.max = PR_MAX(range.max, SSL_LIBRARY_VERSION_TLS_1_2);
+  }
+  if (flags & USE_TLS1_3) {
+    range.min = PR_MIN(range.min, SSL_LIBRARY_VERSION_TLS_1_3);
+    range.max = PR_MAX(range.max, SSL_LIBRARY_VERSION_TLS_1_3);
+  }
+  // Set the valid range, if any were specified (if not, skip
+  // when the default range is invalid, i.e. max > min)
+  if (range.min <= range.max &&
+      SSL_VersionRangeSet(ssl_socket, &range) != SECSuccess) {
+    LOG_ERROR(("Error configuring SSL socket version range\n"));
+    return false;
+  }
+
+  if (flags & USE_3DES) {
+    for (uint16_t i = 0; i < SSL_NumImplementedCiphers; ++i) {
+      uint16_t cipher_id = SSL_ImplementedCiphers[i];
+      if (cipher_id == TLS_RSA_WITH_3DES_EDE_CBC_SHA) {
+        SSL_CipherPrefSet(ssl_socket, cipher_id, true);
+      } else {
+        SSL_CipherPrefSet(ssl_socket, cipher_id, false);
+      }
+    }
+  }
+
+  SSL_ResetHandshake(ssl_socket, true);
+
+  return true;
+}
+
+/**
+ * This function examines the buffer for a Sec-WebSocket-Location: field,
+ * and if it's present, it replaces the hostname in that field with the
+ * value in the server's original_host field.  This function works
+ * in the reverse direction as AdjustWebSocketHost(), replacing the real
+ * hostname of a response with the potentially fake hostname that is expected
+ * by the browser (e.g., mochi.test).
+ *
+ * @return true if the header was adjusted successfully, or not found, false
+ * if the header is present but the url is not, which should indicate
+ * that more data needs to be read from the socket
+ */
+bool AdjustWebSocketLocation(relayBuffer& buffer, connection_info_t* ci) {
+  assert(buffer.margin());
+  buffer.buffertail[1] = '\0';
+
+  char* wsloc = strstr(buffer.bufferhead, "Sec-WebSocket-Location:");
+  if (!wsloc) return true;
+  // advance pointer to the start of the hostname
+  wsloc = strstr(wsloc, "ws://");
+  if (!wsloc) return false;
+  wsloc += 5;
+  // find the end of the hostname
+  char* wslocend = strchr(wsloc + 1, '/');
+  if (!wslocend) return false;
+  char* crlf = strstr(wsloc, "\r\n");
+  if (!crlf) return false;
+  if (ci->original_host.empty()) return true;
+
+  int diff = ci->original_host.length() - (wslocend - wsloc);
+  if (diff > 0) assert(size_t(diff) <= buffer.margin());
+  memmove(wslocend + diff, wslocend, buffer.buffertail - wsloc - diff);
+  buffer.buffertail += diff;
+
+  memcpy(wsloc, ci->original_host.c_str(), ci->original_host.length());
+  return true;
+}
+
+/**
+ * This function examines the buffer for a Host: field, and if it's present,
+ * it replaces the hostname in that field with the hostname in the server's
+ * remote_addr field.  This is needed because proxy requests may be coming
+ * from mochitest with fake hosts, like mochi.test, and these need to be
+ * replaced with the host that the destination server is actually running
+ * on.
+ */
+bool AdjustWebSocketHost(relayBuffer& buffer, connection_info_t* ci) {
+  const char HEADER_UPGRADE[] = "Upgrade:";
+  const char HEADER_HOST[] = "Host:";
+
+  PRNetAddr inet_addr =
+      (websocket_server.inet.port ? websocket_server : remote_addr);
+
+  assert(buffer.margin());
+
+  // Cannot use strnchr so add a null char at the end. There is always some
+  // space left because we preserve a margin.
+  buffer.buffertail[1] = '\0';
+
+  // Verify this is a WebSocket header.
+  char* h1 = strstr(buffer.bufferhead, HEADER_UPGRADE);
+  if (!h1) return false;
+  h1 += strlen(HEADER_UPGRADE);
+  h1 += strspn(h1, " \t");
+  char* h2 = strstr(h1, "WebSocket\r\n");
+  if (!h2) h2 = strstr(h1, "websocket\r\n");
+  if (!h2) h2 = strstr(h1, "Websocket\r\n");
+  if (!h2) return false;
+
+  char* host = strstr(buffer.bufferhead, HEADER_HOST);
+  if (!host) return false;
+  // advance pointer to beginning of hostname
+  host += strlen(HEADER_HOST);
+  host += strspn(host, " \t");
+
+  char* endhost = strstr(host, "\r\n");
+  if (!endhost) return false;
+
+  // Save the original host, so we can use it later on responses from the
+  // server.
+  ci->original_host.assign(host, endhost - host);
+
+  char newhost[40];
+  PR_NetAddrToString(&inet_addr, newhost, sizeof(newhost));
+  assert(strlen(newhost) < sizeof(newhost) - 7);
+  SprintfLiteral(newhost, "%s:%d", newhost, PR_ntohs(inet_addr.inet.port));
+
+  int diff = strlen(newhost) - (endhost - host);
+  if (diff > 0) assert(size_t(diff) <= buffer.margin());
+  memmove(endhost + diff, endhost, buffer.buffertail - host - diff);
+  buffer.buffertail += diff;
+
+  memcpy(host, newhost, strlen(newhost));
+  return true;
+}
+
+/**
+ * This function prefixes Request-URI path with a full scheme-host-port
+ * string.
+ */
+bool AdjustRequestURI(relayBuffer& buffer, string* host) {
+  assert(buffer.margin());
+
+  // Cannot use strnchr so add a null char at the end. There is always some
+  // space left because we preserve a margin.
+  buffer.buffertail[1] = '\0';
+  LOG_DEBUG((" incoming request to adjust:\n%s\n", buffer.bufferhead));
+
+  char *token, *path;
+  path = strchr(buffer.bufferhead, ' ') + 1;
+  if (!path) return false;
+
+  // If the path doesn't start with a slash don't change it, it is probably '*'
+  // or a full path already. Return true, we are done with this request
+  // adjustment.
+  if (*path != '/') return true;
+
+  token = strchr(path, ' ') + 1;
+  if (!token) return false;
+
+  if (strncmp(token, "HTTP/", 5)) return false;
+
+  size_t hostlength = host->length();
+  assert(hostlength <= buffer.margin());
+
+  memmove(path + hostlength, path, buffer.buffertail - path);
+  memcpy(path, host->c_str(), hostlength);
+  buffer.buffertail += hostlength;
+
+  return true;
+}
+
+bool ConnectSocket(UniquePRFileDesc& fd, const PRNetAddr* addr,
+                   PRIntervalTime timeout) {
+  PRStatus stat = PR_Connect(fd.get(), addr, timeout);
+  if (stat != PR_SUCCESS) return false;
+
+  PRSocketOptionData option;
+  option.option = PR_SockOpt_Nonblocking;
+  option.value.non_blocking = true;
+  PR_SetSocketOption(fd.get(), &option);
+
+  return true;
+}
+
+/*
+ * Handle an incoming client connection. The server thread has already
+ * accepted the connection, so we just need to connect to the remote
+ * port and then proxy data back and forth.
+ * The data parameter is a connection_info_t*, and must be deleted
+ * by this function.
+ */
+void HandleConnection(void* data) {
+  connection_info_t* ci = static_cast<connection_info_t*>(data);
+  PRIntervalTime connect_timeout = PR_SecondsToInterval(30);
+
+  UniquePRFileDesc other_sock(PR_NewTCPSocket());
+  bool client_done = false;
+  bool client_error = false;
+  bool connect_accepted = !do_http_proxy;
+  bool ssl_updated = !do_http_proxy;
+  bool expect_request_start = do_http_proxy;
+  string certificateToUse;
+  string locationHeader;
+  client_auth_option clientAuth;
+  string fullHost;
+  int32_t flags = 0;
+
+  LOG_DEBUG(("SSLTUNNEL(%p)): incoming connection csock(0)=%p, ssock(1)=%p\n",
+             static_cast<void*>(data), static_cast<void*>(ci->client_sock),
+             static_cast<void*>(other_sock.get())));
+  if (other_sock) {
+    int32_t numberOfSockets = 1;
+
+    relayBuffer buffers[2];
+
+    if (!do_http_proxy) {
+      if (!ConfigureSSLServerSocket(ci->client_sock, ci->server_info,
+                                    certificateToUse, caNone, flags))
+        client_error = true;
+      else if (!ConnectSocket(other_sock, &remote_addr, connect_timeout))
+        client_error = true;
+      else
+        numberOfSockets = 2;
+    }
+
+    PRPollDesc sockets[2] = {{ci->client_sock, PR_POLL_READ, 0},
+                             {other_sock.get(), PR_POLL_READ, 0}};
+    bool socketErrorState[2] = {false, false};
+
+    while (!((client_error || client_done) && buffers[0].empty() &&
+             buffers[1].empty())) {
+      sockets[0].in_flags |= PR_POLL_EXCEPT;
+      sockets[1].in_flags |= PR_POLL_EXCEPT;
+      LOG_DEBUG(("SSLTUNNEL(%p)): polling flags csock(0)=%c%c, ssock(1)=%c%c\n",
+                 static_cast<void*>(data),
+                 sockets[0].in_flags & PR_POLL_READ ? 'R' : '-',
+                 sockets[0].in_flags & PR_POLL_WRITE ? 'W' : '-',
+                 sockets[1].in_flags & PR_POLL_READ ? 'R' : '-',
+                 sockets[1].in_flags & PR_POLL_WRITE ? 'W' : '-'));
+      int32_t pollStatus =
+          PR_Poll(sockets, numberOfSockets, PR_MillisecondsToInterval(1000));
+      if (pollStatus < 0) {
+        LOG_DEBUG(("SSLTUNNEL(%p)): pollStatus=%d, exiting\n",
+                   static_cast<void*>(data), pollStatus));
+        client_error = true;
+        break;
+      }
+
+      if (pollStatus == 0) {
+        // timeout
+        LOG_DEBUG(("SSLTUNNEL(%p)): poll timeout, looping\n",
+                   static_cast<void*>(data)));
+        continue;
+      }
+
+      for (int32_t s = 0; s < numberOfSockets; ++s) {
+        int32_t s2 = s == 1 ? 0 : 1;
+        int16_t out_flags = sockets[s].out_flags;
+        int16_t& in_flags = sockets[s].in_flags;
+        int16_t& in_flags2 = sockets[s2].in_flags;
+        sockets[s].out_flags = 0;
+
+        LOG_BEGIN_BLOCK();
+        LOG_DEBUG(("SSLTUNNEL(%p)): %csock(%d)=%p out_flags=%d",
+                   static_cast<void*>(data), s == 0 ? 'c' : 's', s,
+                   static_cast<void*>(sockets[s].fd), out_flags));
+        if (out_flags & (PR_POLL_EXCEPT | PR_POLL_ERR | PR_POLL_HUP)) {
+          LOG_DEBUG((" :exception\n"));
+          client_error = true;
+          socketErrorState[s] = true;
+          // We got a fatal error state on the socket. Clear the output buffer
+          // for this socket to break the main loop, we will never more be able
+          // to send those data anyway.
+          buffers[s2].bufferhead = buffers[s2].buffertail = buffers[s2].buffer;
+          continue;
+        }  // PR_POLL_EXCEPT, PR_POLL_ERR, PR_POLL_HUP handling
+
+        if (out_flags & PR_POLL_READ && !buffers[s].areafree()) {
+          LOG_DEBUG(
+              (" no place in read buffer but got read flag, dropping it now!"));
+          in_flags &= ~PR_POLL_READ;
+        }
+
+        if (out_flags & PR_POLL_READ && buffers[s].areafree()) {
+          LOG_DEBUG((" :reading"));
+          int32_t bytesRead =
+              PR_Recv(sockets[s].fd, buffers[s].buffertail,
+                      buffers[s].areafree(), 0, PR_INTERVAL_NO_TIMEOUT);
+
+          if (bytesRead == 0) {
+            LOG_DEBUG((" socket gracefully closed"));
+            client_done = true;
+            in_flags &= ~PR_POLL_READ;
+          } else if (bytesRead < 0) {
+            if (PR_GetError() != PR_WOULD_BLOCK_ERROR) {
+              LOG_DEBUG((" error=%d", PR_GetError()));
+              // We are in error state, indicate that the connection was
+              // not closed gracefully
+              client_error = true;
+              socketErrorState[s] = true;
+              // Wipe out our send buffer, we cannot send it anyway.
+              buffers[s2].bufferhead = buffers[s2].buffertail =
+                  buffers[s2].buffer;
+            } else
+              LOG_DEBUG((" would block"));
+          } else {
+            // If the other socket is in error state (unable to send/receive)
+            // throw this data away and continue loop
+            if (socketErrorState[s2]) {
+              LOG_DEBUG((" have read but other socket is in error state\n"));
+              continue;
+            }
+
+            buffers[s].buffertail += bytesRead;
+            LOG_DEBUG((", read %d bytes", bytesRead));
+
+            // We have to accept and handle the initial CONNECT request here
+            int32_t response;
+            if (!connect_accepted &&
+                ReadConnectRequest(ci->server_info, buffers[s], &response,
+                                   certificateToUse, &clientAuth, fullHost,
+                                   locationHeader, &flags)) {
+              // Mark this as a proxy-only connection (no SSL) if the CONNECT
+              // request didn't come for port 443 or from any of the server's
+              // cert or clientauth hostnames.
+              if (fullHost.find(":443") == string::npos) {
+                server_match_t match;
+                match.fullHost = fullHost;
+                match.matched = false;
+                PL_HashTableEnumerateEntries(ci->server_info->host_cert_table,
+                                             match_hostname, &match);
+                PL_HashTableEnumerateEntries(
+                    ci->server_info->host_clientauth_table, match_hostname,
+                    &match);
+                PL_HashTableEnumerateEntries(ci->server_info->host_ssl3_table,
+                                             match_hostname, &match);
+                PL_HashTableEnumerateEntries(ci->server_info->host_tls1_table,
+                                             match_hostname, &match);
+                PL_HashTableEnumerateEntries(ci->server_info->host_tls11_table,
+                                             match_hostname, &match);
+                PL_HashTableEnumerateEntries(ci->server_info->host_tls12_table,
+                                             match_hostname, &match);
+                PL_HashTableEnumerateEntries(ci->server_info->host_tls13_table,
+                                             match_hostname, &match);
+                PL_HashTableEnumerateEntries(ci->server_info->host_3des_table,
+                                             match_hostname, &match);
+                PL_HashTableEnumerateEntries(
+                    ci->server_info->host_failhandshake_table, match_hostname,
+                    &match);
+                ci->http_proxy_only = !match.matched;
+              } else {
+                ci->http_proxy_only = false;
+              }
+
+              // Clean the request as it would be read
+              buffers[s].bufferhead = buffers[s].buffertail = buffers[s].buffer;
+              in_flags |= PR_POLL_WRITE;
+              connect_accepted = true;
+
+              // Store response to the oposite buffer
+              if (response == 200) {
+                LOG_DEBUG(
+                    (" accepted CONNECT request, connected to the server, "
+                     "sending OK to the client\n"));
+                strcpy(
+                    buffers[s2].buffer,
+                    "HTTP/1.1 200 Connected\r\nConnection: keep-alive\r\n\r\n");
+              } else if (response == 302) {
+                LOG_DEBUG(
+                    (" accepted CONNECT request with redirection, "
+                     "sending location and 302 to the client\n"));
+                client_done = true;
+                snprintf(buffers[s2].buffer,
+                         buffers[s2].bufferend - buffers[s2].buffer,
+                         "HTTP/1.1 302 Moved\r\n"
+                         "Location: https://%s/\r\n"
+                         "Connection: close\r\n\r\n",
+                         locationHeader.c_str());
+              } else {
+                LOG_ERRORD(
+                    (" could not read the connect request, closing connection "
+                     "with %d",
+                     response));
+                client_done = true;
+                snprintf(buffers[s2].buffer,
+                         buffers[s2].bufferend - buffers[s2].buffer,
+                         "HTTP/1.1 %d ERROR\r\nConnection: close\r\n\r\n",
+                         response);
+
+                break;
+              }
+
+              buffers[s2].buffertail =
+                  buffers[s2].buffer + strlen(buffers[s2].buffer);
+
+              // Send the response to the client socket
+              break;
+            }  // end of CONNECT handling
+
+            if (!buffers[s].areafree()) {
+              // Do not poll for read when the buffer is full
+              LOG_DEBUG((" no place in our read buffer, stop reading"));
+              in_flags &= ~PR_POLL_READ;
+            }
+
+            if (ssl_updated) {
+              if (s == 0 && expect_request_start) {
+                if (!strstr(buffers[s].bufferhead, "\r\n\r\n")) {
+                  // We haven't received the complete header yet, so wait.
+                  continue;
+                }
+                ci->iswebsocket = AdjustWebSocketHost(buffers[s], ci);
+                expect_request_start = !(
+                    ci->iswebsocket || AdjustRequestURI(buffers[s], &fullHost));
+                PRNetAddr* addr = &remote_addr;
+                if (ci->iswebsocket && websocket_server.inet.port)
+                  addr = &websocket_server;
+                if (!ConnectSocket(other_sock, addr, connect_timeout)) {
+                  LOG_ERRORD(
+                      (" could not open connection to the real server\n"));
+                  client_error = true;
+                  break;
+                }
+                LOG_DEBUG(("\n connected to remote server\n"));
+                numberOfSockets = 2;
+              } else if (s == 1 && ci->iswebsocket) {
+                if (!AdjustWebSocketLocation(buffers[s], ci)) continue;
+              }
+
+              in_flags2 |= PR_POLL_WRITE;
+              LOG_DEBUG((" telling the other socket to write"));
+            } else
+              LOG_DEBUG(
+                  (" we have something for the other socket to write, but ssl "
+                   "has not been administered on it"));
+          }
+        }  // PR_POLL_READ handling
+
+        if (out_flags & PR_POLL_WRITE) {
+          LOG_DEBUG((" :writing"));
+          int32_t bytesWrite =
+              PR_Send(sockets[s].fd, buffers[s2].bufferhead,
+                      buffers[s2].present(), 0, PR_INTERVAL_NO_TIMEOUT);
+
+          if (bytesWrite < 0) {
+            if (PR_GetError() != PR_WOULD_BLOCK_ERROR) {
+              LOG_DEBUG((" error=%d", PR_GetError()));
+              client_error = true;
+              socketErrorState[s] = true;
+              // We got a fatal error while writting the buffer. Clear it to
+              // break the main loop, we will never more be able to send it.
+              buffers[s2].bufferhead = buffers[s2].buffertail =
+                  buffers[s2].buffer;
+            } else
+              LOG_DEBUG((" would block"));
+          } else {
+            LOG_DEBUG((", written %d bytes", bytesWrite));
+            buffers[s2].buffertail[1] = '\0';
+            LOG_DEBUG((" dump:\n%.*s\n", bytesWrite, buffers[s2].bufferhead));
+
+            buffers[s2].bufferhead += bytesWrite;
+            if (buffers[s2].present()) {
+              LOG_DEBUG((" still have to write %d bytes",
+                         (int)buffers[s2].present()));
+              in_flags |= PR_POLL_WRITE;
+            } else {
+              if (!ssl_updated) {
+                LOG_DEBUG((" proxy response sent to the client"));
+                // Proxy response has just been writen, update to ssl
+                ssl_updated = true;
+                if (ci->http_proxy_only) {
+                  LOG_DEBUG(
+                      (" not updating to SSL based on http_proxy_only for this "
+                       "socket"));
+                } else if (!ConfigureSSLServerSocket(
+                               ci->client_sock, ci->server_info,
+                               certificateToUse, clientAuth, flags)) {
+                  LOG_ERRORD((" failed to config server socket\n"));
+                  client_error = true;
+                  break;
+                } else {
+                  LOG_DEBUG((" client socket updated to SSL"));
+                }
+              }  // sslUpdate
+
+              LOG_DEBUG(
+                  (" dropping our write flag and setting other socket read "
+                   "flag"));
+              in_flags &= ~PR_POLL_WRITE;
+              in_flags2 |= PR_POLL_READ;
+              buffers[s2].compact();
+            }
+          }
+        }                 // PR_POLL_WRITE handling
+        LOG_END_BLOCK();  // end the log
+      }                   // for...
+    }                     // while, poll
+  } else
+    client_error = true;
+
+  LOG_DEBUG(("SSLTUNNEL(%p)): exiting root function for csock=%p, ssock=%p\n",
+             static_cast<void*>(data), static_cast<void*>(ci->client_sock),
+             static_cast<void*>(other_sock.get())));
+  if (!client_error) PR_Shutdown(ci->client_sock, PR_SHUTDOWN_SEND);
+  PR_Close(ci->client_sock);
+
+  delete ci;
+}
+
+/*
+ * Start listening for SSL connections on a specified port, handing
+ * them off to client threads after accepting the connection.
+ * The data parameter is a server_info_t*, owned by the calling
+ * function.
+ */
+void StartServer(void* data) {
+  server_info_t* si = static_cast<server_info_t*>(data);
+
+  // TODO: select ciphers?
+  UniquePRFileDesc listen_socket(PR_NewTCPSocket());
+  if (!listen_socket) {
+    LOG_ERROR(("failed to create socket\n"));
+    SignalShutdown();
+    return;
+  }
+
+  // In case the socket is still open in the TIME_WAIT state from a previous
+  // instance of ssltunnel we ask to reuse the port.
+  PRSocketOptionData socket_option;
+  socket_option.option = PR_SockOpt_Reuseaddr;
+  socket_option.value.reuse_addr = true;
+  PR_SetSocketOption(listen_socket.get(), &socket_option);
+
+  PRNetAddr server_addr;
+  PRNetAddrValue listen_addr;
+  if (listen_public) {
+    listen_addr = PR_IpAddrAny;
+  } else {
+    listen_addr = PR_IpAddrLoopback;
+  }
+  PR_InitializeNetAddr(listen_addr, si->listen_port, &server_addr);
+
+  if (PR_Bind(listen_socket.get(), &server_addr) != PR_SUCCESS) {
+    LOG_ERROR(("failed to bind socket on port %d: error %d\n", si->listen_port,
+               PR_GetError()));
+    SignalShutdown();
+    return;
+  }
+
+  if (PR_Listen(listen_socket.get(), 1) != PR_SUCCESS) {
+    LOG_ERROR(("failed to listen on socket\n"));
+    SignalShutdown();
+    return;
+  }
+
+  LOG_INFO(("Server listening on port %d with cert %s\n", si->listen_port,
+            si->cert_nickname.c_str()));
+
+  while (!shutdown_server) {
+    connection_info_t* ci = new connection_info_t();
+    ci->server_info = si;
+    ci->http_proxy_only = do_http_proxy;
+    // block waiting for connections
+    ci->client_sock = PR_Accept(listen_socket.get(), &ci->client_addr,
+                                PR_INTERVAL_NO_TIMEOUT);
+
+    PRSocketOptionData option;
+    option.option = PR_SockOpt_Nonblocking;
+    option.value.non_blocking = true;
+    PR_SetSocketOption(ci->client_sock, &option);
+
+    if (ci->client_sock)
+      // Not actually using this PRJob*...
+      // PRJob* job =
+      PR_QueueJob(threads, HandleConnection, ci, true);
+    else
+      delete ci;
+  }
+}
+
+// bogus password func, just don't use passwords. :-P
+char* password_func(PK11SlotInfo* slot, PRBool retry, void* arg) {
+  if (retry) return nullptr;
+
+  return PL_strdup("");
+}
+
+server_info_t* findServerInfo(int portnumber) {
+  for (auto& server : servers) {
+    if (server.listen_port == portnumber) return &server;
+  }
+
+  return nullptr;
+}
+
+PLHashTable* get_ssl3_table(server_info_t* server) {
+  return server->host_ssl3_table;
+}
+
+PLHashTable* get_tls1_table(server_info_t* server) {
+  return server->host_tls1_table;
+}
+
+PLHashTable* get_tls11_table(server_info_t* server) {
+  return server->host_tls11_table;
+}
+
+PLHashTable* get_tls12_table(server_info_t* server) {
+  return server->host_tls12_table;
+}
+
+PLHashTable* get_tls13_table(server_info_t* server) {
+  return server->host_tls13_table;
+}
+
+PLHashTable* get_3des_table(server_info_t* server) {
+  return server->host_3des_table;
+}
+
+PLHashTable* get_failhandshake_table(server_info_t* server) {
+  return server->host_failhandshake_table;
+}
+
+int parseWeakCryptoConfig(char* const& keyword, char*& _caret,
+                          PLHashTable* (*get_table)(server_info_t*)) {
+  char* hostname = strtok2(_caret, ":", &_caret);
+  char* hostportstring = strtok2(_caret, ":", &_caret);
+  char* serverportstring = strtok2(_caret, "\n", &_caret);
+
+  int port = atoi(serverportstring);
+  if (port <= 0) {
+    LOG_ERROR(("Invalid port specified: %s\n", serverportstring));
+    return 1;
+  }
+
+  if (server_info_t* existingServer = findServerInfo(port)) {
+    any_host_spec_config = true;
+
+    char* hostname_copy =
+        new char[strlen(hostname) + strlen(hostportstring) + 2];
+    if (!hostname_copy) {
+      LOG_ERROR(("Out of memory"));
+      return 1;
+    }
+
+    strcpy(hostname_copy, hostname);
+    strcat(hostname_copy, ":");
+    strcat(hostname_copy, hostportstring);
+
+    PLHashEntry* entry =
+        PL_HashTableAdd(get_table(existingServer), hostname_copy, keyword);
+    if (!entry) {
+      LOG_ERROR(("Out of memory"));
+      return 1;
+    }
+  } else {
+    LOG_ERROR(
+        ("Server on port %d for redirhost option is not defined, use 'listen' "
+         "option first",
+         port));
+    return 1;
+  }
+
+  return 0;
+}
+
+int processConfigLine(char* configLine) {
+  if (*configLine == 0 || *configLine == '#') return 0;
+
+  char* _caret;
+  char* keyword = strtok2(configLine, ":", &_caret);
+  // Configure usage of http/ssl tunneling proxy behavior
+  if (!strcmp(keyword, "httpproxy")) {
+    char* value = strtok2(_caret, ":", &_caret);
+    if (!strcmp(value, "1")) do_http_proxy = true;
+
+    return 0;
+  }
+
+  if (!strcmp(keyword, "websocketserver")) {
+    char* ipstring = strtok2(_caret, ":", &_caret);
+    if (PR_StringToNetAddr(ipstring, &websocket_server) != PR_SUCCESS) {
+      LOG_ERROR(("Invalid IP address in proxy config: %s\n", ipstring));
+      return 1;
+    }
+    char* remoteport = strtok2(_caret, ":", &_caret);
+    int port = atoi(remoteport);
+    if (port <= 0) {
+      LOG_ERROR(("Invalid remote port in proxy config: %s\n", remoteport));
+      return 1;
+    }
+    websocket_server.inet.port = PR_htons(port);
+    return 0;
+  }
+
+  // Configure the forward address of the target server
+  if (!strcmp(keyword, "forward")) {
+    char* ipstring = strtok2(_caret, ":", &_caret);
+    if (PR_StringToNetAddr(ipstring, &remote_addr) != PR_SUCCESS) {
+      LOG_ERROR(("Invalid remote IP address: %s\n", ipstring));
+      return 1;
+    }
+    char* serverportstring = strtok2(_caret, ":", &_caret);
+    int port = atoi(serverportstring);
+    if (port <= 0) {
+      LOG_ERROR(("Invalid remote port: %s\n", serverportstring));
+      return 1;
+    }
+    remote_addr.inet.port = PR_htons(port);
+
+    return 0;
+  }
+
+  // Configure all listen sockets and port+certificate bindings.
+  // Listen on the public address if "*" was specified as the listen
+  // address or listen on the loopback address if "127.0.0.1" was
+  // specified. Using loopback will prevent users getting errors from
+  // their firewalls about ssltunnel needing permission. A public
+  // address is required when proxying ssl traffic from a physical or
+  // emulated Android device since it has a different ip address from
+  // the host.
+  if (!strcmp(keyword, "listen")) {
+    char* hostname = strtok2(_caret, ":", &_caret);
+    char* hostportstring = nullptr;
+    if (!strcmp(hostname, "*")) {
+      listen_public = true;
+    } else if (strcmp(hostname, "127.0.0.1")) {
+      any_host_spec_config = true;
+      hostportstring = strtok2(_caret, ":", &_caret);
+    }
+
+    char* serverportstring = strtok2(_caret, ":", &_caret);
+    char* certnick = strtok2(_caret, ":", &_caret);
+
+    int port = atoi(serverportstring);
+    if (port <= 0) {
+      LOG_ERROR(("Invalid port specified: %s\n", serverportstring));
+      return 1;
+    }
+
+    if (server_info_t* existingServer = findServerInfo(port)) {
+      if (!hostportstring) {
+        LOG_ERROR(
+            ("Null hostportstring specified for hostname %s\n", hostname));
+        return 1;
+      }
+      char* certnick_copy = new char[strlen(certnick) + 1];
+      char* hostname_copy =
+          new char[strlen(hostname) + strlen(hostportstring) + 2];
+
+      strcpy(hostname_copy, hostname);
+      strcat(hostname_copy, ":");
+      strcat(hostname_copy, hostportstring);
+      strcpy(certnick_copy, certnick);
+
+      PLHashEntry* entry = PL_HashTableAdd(existingServer->host_cert_table,
+                                           hostname_copy, certnick_copy);
+      if (!entry) {
+        LOG_ERROR(("Out of memory"));
+        return 1;
+      }
+    } else {
+      server_info_t server;
+      server.cert_nickname = certnick;
+      server.listen_port = port;
+      server.host_cert_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+      if (!server.host_cert_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+      server.host_clientauth_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          ClientAuthValueComparator, nullptr, nullptr);
+      if (!server.host_clientauth_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+      server.host_redir_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+      if (!server.host_redir_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      server.host_ssl3_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+
+      if (!server.host_ssl3_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      server.host_tls1_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+
+      if (!server.host_tls1_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      server.host_tls11_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+
+      if (!server.host_tls11_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      server.host_tls12_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+
+      if (!server.host_tls12_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      server.host_tls13_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+
+      if (!server.host_tls13_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      server.host_3des_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+      ;
+      if (!server.host_3des_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      server.host_failhandshake_table =
+          PL_NewHashTable(0, PL_HashString, PL_CompareStrings,
+                          PL_CompareStrings, nullptr, nullptr);
+      ;
+      if (!server.host_failhandshake_table) {
+        LOG_ERROR(("Internal, could not create hash table\n"));
+        return 1;
+      }
+
+      servers.push_back(server);
+    }
+
+    return 0;
+  }
+
+  if (!strcmp(keyword, "clientauth")) {
+    char* hostname = strtok2(_caret, ":", &_caret);
+    char* hostportstring = strtok2(_caret, ":", &_caret);
+    char* serverportstring = strtok2(_caret, ":", &_caret);
+
+    int port = atoi(serverportstring);
+    if (port <= 0) {
+      LOG_ERROR(("Invalid port specified: %s\n", serverportstring));
+      return 1;
+    }
+
+    if (server_info_t* existingServer = findServerInfo(port)) {
+      char* authoptionstring = strtok2(_caret, ":", &_caret);
+      client_auth_option* authoption = new client_auth_option;
+      if (!authoption) {
+        LOG_ERROR(("Out of memory"));
+        return 1;
+      }
+
+      if (!strcmp(authoptionstring, "require"))
+        *authoption = caRequire;
+      else if (!strcmp(authoptionstring, "request"))
+        *authoption = caRequest;
+      else if (!strcmp(authoptionstring, "none"))
+        *authoption = caNone;
+      else {
+        LOG_ERROR(
+            ("Incorrect client auth option modifier for host '%s'", hostname));
+        delete authoption;
+        return 1;
+      }
+
+      any_host_spec_config = true;
+
+      char* hostname_copy =
+          new char[strlen(hostname) + strlen(hostportstring) + 2];
+      if (!hostname_copy) {
+        LOG_ERROR(("Out of memory"));
+        delete authoption;
+        return 1;
+      }
+
+      strcpy(hostname_copy, hostname);
+      strcat(hostname_copy, ":");
+      strcat(hostname_copy, hostportstring);
+
+      PLHashEntry* entry = PL_HashTableAdd(
+          existingServer->host_clientauth_table, hostname_copy, authoption);
+      if (!entry) {
+        LOG_ERROR(("Out of memory"));
+        delete authoption;
+        return 1;
+      }
+    } else {
+      LOG_ERROR(
+          ("Server on port %d for client authentication option is not defined, "
+           "use 'listen' option first",
+           port));
+      return 1;
+    }
+
+    return 0;
+  }
+
+  if (!strcmp(keyword, "redirhost")) {
+    char* hostname = strtok2(_caret, ":", &_caret);
+    char* hostportstring = strtok2(_caret, ":", &_caret);
+    char* serverportstring = strtok2(_caret, ":", &_caret);
+
+    int port = atoi(serverportstring);
+    if (port <= 0) {
+      LOG_ERROR(("Invalid port specified: %s\n", serverportstring));
+      return 1;
+    }
+
+    if (server_info_t* existingServer = findServerInfo(port)) {
+      char* redirhoststring = strtok2(_caret, ":", &_caret);
+
+      any_host_spec_config = true;
+
+      char* hostname_copy =
+          new char[strlen(hostname) + strlen(hostportstring) + 2];
+      if (!hostname_copy) {
+        LOG_ERROR(("Out of memory"));
+        return 1;
+      }
+
+      strcpy(hostname_copy, hostname);
+      strcat(hostname_copy, ":");
+      strcat(hostname_copy, hostportstring);
+
+      char* redir_copy = new char[strlen(redirhoststring) + 1];
+      strcpy(redir_copy, redirhoststring);
+      PLHashEntry* entry = PL_HashTableAdd(existingServer->host_redir_table,
+                                           hostname_copy, redir_copy);
+      if (!entry) {
+        LOG_ERROR(("Out of memory"));
+        delete[] hostname_copy;
+        delete[] redir_copy;
+        return 1;
+      }
+    } else {
+      LOG_ERROR(
+          ("Server on port %d for redirhost option is not defined, use "
+           "'listen' option first",
+           port));
+      return 1;
+    }
+
+    return 0;
+  }
+
+  if (!strcmp(keyword, "ssl3")) {
+    return parseWeakCryptoConfig(keyword, _caret, get_ssl3_table);
+  }
+  if (!strcmp(keyword, "tls1")) {
+    return parseWeakCryptoConfig(keyword, _caret, get_tls1_table);
+  }
+  if (!strcmp(keyword, "tls1_1")) {
+    return parseWeakCryptoConfig(keyword, _caret, get_tls11_table);
+  }
+  if (!strcmp(keyword, "tls1_2")) {
+    return parseWeakCryptoConfig(keyword, _caret, get_tls12_table);
+  }
+  if (!strcmp(keyword, "tls1_3")) {
+    return parseWeakCryptoConfig(keyword, _caret, get_tls13_table);
+  }
+
+  if (!strcmp(keyword, "3des")) {
+    return parseWeakCryptoConfig(keyword, _caret, get_3des_table);
+  }
+
+  if (!strcmp(keyword, "failHandshake")) {
+    return parseWeakCryptoConfig(keyword, _caret, get_failhandshake_table);
+  }
+
+  // Configure the NSS certificate database directory
+  if (!strcmp(keyword, "certdbdir")) {
+    nssconfigdir = strtok2(_caret, "\n", &_caret);
+    return 0;
+  }
+
+  LOG_ERROR(("Error: keyword \"%s\" unexpected\n", keyword));
+  return 1;
+}
+
+int parseConfigFile(const char* filePath) {
+  FILE* f = fopen(filePath, "r");
+  if (!f) return 1;
+
+  char buffer[1024], *b = buffer;
+  while (!feof(f)) {
+    char c;
+
+    if (fscanf(f, "%c", &c) != 1) {
+      break;
+    }
+
+    switch (c) {
+      case '\n':
+        *b++ = 0;
+        if (processConfigLine(buffer)) {
+          fclose(f);
+          return 1;
+        }
+        b = buffer;
+        continue;
+
+      case '\r':
+        continue;
+
+      default:
+        *b++ = c;
+    }
+  }
+
+  fclose(f);
+
+  // Check mandatory items
+  if (nssconfigdir.empty()) {
+    LOG_ERROR(
+        ("Error: missing path to NSS certification database\n,use "
+         "certdbdir:<path> in the config file\n"));
+    return 1;
+  }
+
+  if (any_host_spec_config && !do_http_proxy) {
+    LOG_ERROR(
+        ("Warning: any host-specific configurations are ignored, add "
+         "httpproxy:1 to allow them\n"));
+  }
+
+  return 0;
+}
+
+int freeHostCertHashItems(PLHashEntry* he, int i, void* arg) {
+  delete[] (char*)he->key;
+  delete[] (char*)he->value;
+  return HT_ENUMERATE_REMOVE;
+}
+
+int freeHostRedirHashItems(PLHashEntry* he, int i, void* arg) {
+  delete[] (char*)he->key;
+  delete[] (char*)he->value;
+  return HT_ENUMERATE_REMOVE;
+}
+
+int freeClientAuthHashItems(PLHashEntry* he, int i, void* arg) {
+  delete[] (char*)he->key;
+  delete (client_auth_option*)he->value;
+  return HT_ENUMERATE_REMOVE;
+}
+
+int freeSSL3HashItems(PLHashEntry* he, int i, void* arg) {
+  delete[] (char*)he->key;
+  return HT_ENUMERATE_REMOVE;
+}
+
+int freeTLSHashItems(PLHashEntry* he, int i, void* arg) {
+  delete[] (char*)he->key;
+  return HT_ENUMERATE_REMOVE;
+}
+
+int free3DESHashItems(PLHashEntry* he, int i, void* arg) {
+  delete[] (char*)he->key;
+  return HT_ENUMERATE_REMOVE;
+}
+
+int main(int argc, char** argv) {
+  const char* configFilePath;
+
+  const char* logLevelEnv = PR_GetEnv("SSLTUNNEL_LOG_LEVEL");
+  gLogLevel = logLevelEnv ? (LogLevel)atoi(logLevelEnv) : LEVEL_INFO;
+
+  if (argc == 1)
+    configFilePath = "ssltunnel.cfg";
+  else
+    configFilePath = argv[1];
+
+  memset(&websocket_server, 0, sizeof(PRNetAddr));
+
+  if (parseConfigFile(configFilePath)) {
+    LOG_ERROR((
+        "Error: config file \"%s\" missing or formating incorrect\n"
+        "Specify path to the config file as parameter to ssltunnel or \n"
+        "create ssltunnel.cfg in the working directory.\n\n"
+        "Example format of the config file:\n\n"
+        "       # Enable http/ssl tunneling proxy-like behavior.\n"
+        "       # If not specified ssltunnel simply does direct forward.\n"
+        "       httpproxy:1\n\n"
+        "       # Specify path to the certification database used.\n"
+        "       certdbdir:/path/to/certdb\n\n"
+        "       # Forward/proxy all requests in raw to 127.0.0.1:8888.\n"
+        "       forward:127.0.0.1:8888\n\n"
+        "       # Accept connections on port 4443 or 5678 resp. and "
+        "authenticate\n"
+        "       # to any host ('*') using the 'server cert' or 'server cert 2' "
+        "resp.\n"
+        "       listen:*:4443:server cert\n"
+        "       listen:*:5678:server cert 2\n\n"
+        "       # Accept connections on port 4443 and authenticate using\n"
+        "       # 'a different cert' when target host is 'my.host.name:443'.\n"
+        "       # This only works in httpproxy mode and has higher priority\n"
+        "       # than the previous option.\n"
+        "       listen:my.host.name:443:4443:a different cert\n\n"
+        "       # To make a specific host require or just request a client "
+        "certificate\n"
+        "       # to authenticate use the following options. This can only be "
+        "used\n"
+        "       # in httpproxy mode and only after the 'listen' option has "
+        "been\n"
+        "       # specified. You also have to specify the tunnel listen port.\n"
+        "       clientauth:requesting-client-cert.host.com:443:4443:request\n"
+        "       clientauth:requiring-client-cert.host.com:443:4443:require\n"
+        "       # Proxy WebSocket traffic to the server at 127.0.0.1:9999,\n"
+        "       # instead of the server specified in the 'forward' option.\n"
+        "       websocketserver:127.0.0.1:9999\n",
+        configFilePath));
+    return 1;
+  }
+
+  // create a thread pool to handle connections
+  threads =
+      PR_CreateThreadPool(INITIAL_THREADS * servers.size(),
+                          MAX_THREADS * servers.size(), DEFAULT_STACKSIZE);
+  if (!threads) {
+    LOG_ERROR(("Failed to create thread pool\n"));
+    return 1;
+  }
+
+  shutdown_lock = PR_NewLock();
+  if (!shutdown_lock) {
+    LOG_ERROR(("Failed to create lock\n"));
+    PR_ShutdownThreadPool(threads);
+    return 1;
+  }
+  shutdown_condvar = PR_NewCondVar(shutdown_lock);
+  if (!shutdown_condvar) {
+    LOG_ERROR(("Failed to create condvar\n"));
+    PR_ShutdownThreadPool(threads);
+    PR_DestroyLock(shutdown_lock);
+    return 1;
+  }
+
+  PK11_SetPasswordFunc(password_func);
+
+  // Initialize NSS
+  if (NSS_Init(nssconfigdir.c_str()) != SECSuccess) {
+    int32_t errorlen = PR_GetErrorTextLength();
+    if (errorlen) {
+      auto err = mozilla::MakeUnique<char[]>(errorlen + 1);
+      PR_GetErrorText(err.get());
+      LOG_ERROR(("Failed to init NSS: %s", err.get()));
+    } else {
+      LOG_ERROR(("Failed to init NSS: Cannot get error from NSPR."));
+    }
+    PR_ShutdownThreadPool(threads);
+    PR_DestroyCondVar(shutdown_condvar);
+    PR_DestroyLock(shutdown_lock);
+    return 1;
+  }
+
+  if (NSS_SetDomesticPolicy() != SECSuccess) {
+    LOG_ERROR(("NSS_SetDomesticPolicy failed\n"));
+    PR_ShutdownThreadPool(threads);
+    PR_DestroyCondVar(shutdown_condvar);
+    PR_DestroyLock(shutdown_lock);
+    NSS_Shutdown();
+    return 1;
+  }
+
+  // these values should make NSS use the defaults
+  if (SSL_ConfigServerSessionIDCache(0, 0, 0, nullptr) != SECSuccess) {
+    LOG_ERROR(("SSL_ConfigServerSessionIDCache failed\n"));
+    PR_ShutdownThreadPool(threads);
+    PR_DestroyCondVar(shutdown_condvar);
+    PR_DestroyLock(shutdown_lock);
+    NSS_Shutdown();
+    return 1;
+  }
+
+  for (auto& server : servers) {
+    // Not actually using this PRJob*...
+    // PRJob* server_job =
+    PR_QueueJob(threads, StartServer, &server, true);
+  }
+  // now wait for someone to tell us to quit
+  PR_Lock(shutdown_lock);
+  PR_WaitCondVar(shutdown_condvar, PR_INTERVAL_NO_TIMEOUT);
+  PR_Unlock(shutdown_lock);
+  shutdown_server = true;
+  LOG_INFO(("Shutting down...\n"));
+  // cleanup
+  PR_ShutdownThreadPool(threads);
+  PR_JoinThreadPool(threads);
+  PR_DestroyCondVar(shutdown_condvar);
+  PR_DestroyLock(shutdown_lock);
+  if (NSS_Shutdown() == SECFailure) {
+    LOG_DEBUG(("Leaked NSS objects!\n"));
+  }
+
+  for (auto& server : servers) {
+    PL_HashTableEnumerateEntries(server.host_cert_table, freeHostCertHashItems,
+                                 nullptr);
+    PL_HashTableEnumerateEntries(server.host_clientauth_table,
+                                 freeClientAuthHashItems, nullptr);
+    PL_HashTableEnumerateEntries(server.host_redir_table,
+                                 freeHostRedirHashItems, nullptr);
+    PL_HashTableEnumerateEntries(server.host_ssl3_table, freeSSL3HashItems,
+                                 nullptr);
+    PL_HashTableEnumerateEntries(server.host_tls1_table, freeTLSHashItems,
+                                 nullptr);
+    PL_HashTableEnumerateEntries(server.host_tls11_table, freeTLSHashItems,
+                                 nullptr);
+    PL_HashTableEnumerateEntries(server.host_tls12_table, freeTLSHashItems,
+                                 nullptr);
+    PL_HashTableEnumerateEntries(server.host_tls13_table, freeTLSHashItems,
+                                 nullptr);
+    PL_HashTableEnumerateEntries(server.host_3des_table, free3DESHashItems,
+                                 nullptr);
+    PL_HashTableEnumerateEntries(server.host_failhandshake_table,
+                                 free3DESHashItems, nullptr);
+    PL_HashTableDestroy(server.host_cert_table);
+    PL_HashTableDestroy(server.host_clientauth_table);
+    PL_HashTableDestroy(server.host_redir_table);
+    PL_HashTableDestroy(server.host_ssl3_table);
+    PL_HashTableDestroy(server.host_tls1_table);
+    PL_HashTableDestroy(server.host_tls11_table);
+    PL_HashTableDestroy(server.host_tls12_table);
+    PL_HashTableDestroy(server.host_tls13_table);
+    PL_HashTableDestroy(server.host_3des_table);
+    PL_HashTableDestroy(server.host_failhandshake_table);
+  }
+
+  PR_Cleanup();
+  return 0;
+}