src/sslproc.c

   1 /*
   2  *  sslproc.c: An interface to ssld
   3  *  Copyright (C) 2007 Aaron Sethman <androsyn@ratbox.org>
   4  *  Copyright (C) 2007 ircd-ratbox development team
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
  19  *  USA
  20  *
  21  *  $Id$
  22  */
  23
  24 #include <ratbox_lib.h>
  25 #include "stdinc.h"
  26
  27
  28 #include "s_conf.h"
  29 #include "logger.h"
  30 #include "listener.h"
  31 #include "sslproc.h"
  32 #include "s_serv.h"
  33 #include "ircd.h"
  34 #include "hash.h"
  35 #include "client.h"
  36 #include "send.h"
  37 #include "packet.h"
  38
  39 #define ZIPSTATS_TIME           60
  40
  41 static void collect_zipstats(void *unused);
  42 static void ssl_read_ctl(rb_fde_t * F, void *data);
  43 static int ssld_count;
  44
  45 static char tmpbuf[READBUF_SIZE];
  46 static char nul = '\0';
  47
  48 #define MAXPASSFD 4
  49 #define READSIZE 1024
  50 typedef struct _ssl_ctl_buf
  51 {
  52         rb_dlink_node node;
  53         char *buf;
  54         size_t buflen;
  55         rb_fde_t *F[MAXPASSFD];
  56         int nfds;
  57 } ssl_ctl_buf_t;
  58
  59
  60 struct _ssl_ctl
  61 {
  62         rb_dlink_node node;
  63         int cli_count;
  64         rb_fde_t *F;
  65         rb_fde_t *P;
  66         pid_t pid;
  67         rb_dlink_list readq;
  68         rb_dlink_list writeq;
  69         uint8_t dead;
  70 };
  71
  72 static void send_new_ssl_certs_one(ssl_ctl_t * ctl, const char *ssl_cert,
  73                                    const char *ssl_private_key, const char *ssl_dh_params);
  74 static void send_init_prng(ssl_ctl_t * ctl, prng_seed_t seedtype, const char *path);
  75
  76
  77 static rb_dlink_list ssl_daemons;
  78
  79 static inline int32_t
  80 buf_to_int32(char *buf)
  81 {
  82         int32_t x;
  83         memcpy(&x, buf, sizeof(x));
  84         return x;
  85 }
  86
  87 static inline void
  88 int32_to_buf(char *buf, int32_t x)
  89 {
  90         memcpy(buf, &x, sizeof(x));
  91         return;
  92 }
  93
  94
  95 static inline uint16_t
  96 buf_to_uint16(char *buf)
  97 {
  98         uint16_t x;
  99         memcpy(&x, buf, sizeof(x));
 100         return x;
 101 }
 102
 103 static inline void
 104 uint16_to_buf(char *buf, uint16_t x)
 105 {
 106         memcpy(buf, &x, sizeof(x));
 107         return;
 108 }
 109
 110
 111 static ssl_ctl_t *
 112 allocate_ssl_daemon(rb_fde_t * F, rb_fde_t * P, int pid)
 113 {
 114         ssl_ctl_t *ctl;
 115
 116         if(F == NULL || pid < 0)
 117                 return NULL;
 118         ctl = rb_malloc(sizeof(ssl_ctl_t));
 119         ctl->F = F;
 120         ctl->P = P;
 121         ctl->pid = pid;
 122         ssld_count++;
 123         rb_dlinkAdd(ctl, &ctl->node, &ssl_daemons);
 124         return ctl;
 125 }
 126
 127 static void
 128 free_ssl_daemon(ssl_ctl_t * ctl)
 129 {
 130         rb_dlink_node *ptr;
 131         ssl_ctl_buf_t *ctl_buf;
 132         int x;
 133         if(ctl->cli_count)
 134                 return;
 135
 136         RB_DLINK_FOREACH(ptr, ctl->readq.head)
 137         {
 138                 ctl_buf = ptr->data;
 139                 for(x = 0; x < ctl_buf->nfds; x++)
 140                         rb_close(ctl_buf->F[x]);
 141
 142                 rb_free(ctl_buf->buf);
 143                 rb_free(ctl_buf);
 144         }
 145
 146         RB_DLINK_FOREACH(ptr, ctl->writeq.head)
 147         {
 148                 ctl_buf = ptr->data;
 149                 for(x = 0; x < ctl_buf->nfds; x++)
 150                         rb_close(ctl_buf->F[x]);
 151
 152                 rb_free(ctl_buf->buf);
 153                 rb_free(ctl_buf);
 154         }
 155         rb_close(ctl->F);
 156         rb_close(ctl->P);
 157         rb_dlinkDelete(&ctl->node, &ssl_daemons);
 158         rb_free(ctl);
 159 }
 160
 161 static char *ssld_path;
 162
 163 static int ssld_spin_count = 0;
 164 static time_t last_spin;
 165 static int ssld_wait = 0;
 166
 167
 168 static void
 169 ssl_killall(void)
 170 {
 171         rb_dlink_node *ptr, *next;
 172         ssl_ctl_t *ctl;
 173         RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head)
 174         {
 175                 ctl = ptr->data;
 176                 if(ctl->dead)
 177                         continue;
 178                 ctl->dead = 1;
 179                 ssld_count--;
 180                 rb_kill(ctl->pid, SIGKILL);
 181         }
 182 }
 183
 184 static void
 185 ssl_dead(ssl_ctl_t * ctl)
 186 {
 187         if(ctl->dead)
 188                 return;
 189
 190         ctl->dead = 1;
 191         ssld_count--;
 192         rb_kill(ctl->pid, SIGKILL);     /* make sure the process is really gone */
 193         ilog(L_MAIN, "ssld helper died - attempting to restart");
 194         sendto_realops_snomask(SNO_GENERAL, L_ALL, "ssld helper died - attempting to restart");
 195         start_ssldaemon(1, ServerInfo.ssl_cert, ServerInfo.ssl_private_key, ServerInfo.ssl_dh_params);
 196 }
 197
 198 static void
 199 ssl_do_pipe(rb_fde_t * F, void *data)
 200 {
 201         int retlen;
 202         ssl_ctl_t *ctl = data;
 203         retlen = rb_write(F, "0", 1);
 204         if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno)))
 205         {
 206                 ssl_dead(ctl);
 207                 return;
 208         }
 209         rb_setselect(F, RB_SELECT_READ, ssl_do_pipe, data);
 210 }
 211
 212 static void
 213 restart_ssld_event(void *unused)
 214 {
 215         ssld_spin_count = 0;
 216         last_spin = 0;
 217         ssld_wait = 0;
 218         if(ServerInfo.ssld_count > get_ssld_count())
 219         {
 220                 int start = ServerInfo.ssld_count - get_ssld_count();
 221                 ilog(L_MAIN, "Attempting to restart ssld processes");
 222                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "Attempt to restart ssld processes");
 223                 start_ssldaemon(start, ServerInfo.ssl_cert, ServerInfo.ssl_private_key, ServerInfo.ssl_dh_params);
 224         }
 225 }
 226
 227 int
 228 start_ssldaemon(int count, const char *ssl_cert, const char *ssl_private_key, const char *ssl_dh_params)
 229 {
 230         rb_fde_t *F1, *F2;
 231         rb_fde_t *P1, *P2;
 232 #ifdef _WIN32
 233         const char *suffix = ".exe";
 234 #else
 235         const char *suffix = "";
 236 #endif
 237
 238         char fullpath[PATH_MAX + 1];
 239         char fdarg[6];
 240         const char *parv[2];
 241         char buf[128];
 242         char s_pid[10];
 243         pid_t pid;
 244         int started = 0, i;
 245
 246         if(ssld_wait)
 247                 return 0;
 248
 249         if(ssld_spin_count > 20 && (rb_current_time() - last_spin < 5))
 250         {
 251                 ilog(L_MAIN, "ssld helper is spinning - will attempt to restart in 1 minute");
 252                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 253                                        "ssld helper is spinning - will attempt to restart in 1 minute");
 254                 rb_event_add("restart_ssld_event", restart_ssld_event, NULL, 60);
 255                 ssld_wait = 1;
 256                 return 0;
 257         }
 258
 259         ssld_spin_count++;
 260         last_spin = rb_current_time();
 261
 262         if(ssld_path == NULL)
 263         {
 264                 rb_snprintf(fullpath, sizeof(fullpath), "%s/ssld%s", BINPATH, suffix);
 265
 266                 if(access(fullpath, X_OK) == -1)
 267                 {
 268                         rb_snprintf(fullpath, sizeof(fullpath), "%s/bin/ssld%s",
 269                                     ConfigFileEntry.dpath, suffix);
 270                         if(access(fullpath, X_OK) == -1)
 271                         {
 272                                 ilog(L_MAIN,
 273                                      "Unable to execute ssld%s in %s/bin or %s",
 274                                      ConfigFileEntry.dpath, suffix, BINPATH);
 275                                 return 0;
 276                         }
 277                 }
 278                 ssld_path = rb_strdup(fullpath);
 279         }
 280         rb_strlcpy(buf, "-ircd ssld daemon helper", sizeof(buf));
 281         parv[0] = buf;
 282         parv[1] = NULL;
 283
 284         for(i = 0; i < count; i++)
 285         {
 286                 ssl_ctl_t *ctl;
 287                 if(rb_socketpair(AF_UNIX, SOCK_DGRAM, 0, &F1, &F2, "SSL/TLS handle passing socket") == -1)
 288                 {
 289                         ilog(L_MAIN, "Unable to create ssld - rb_socketpair failed: %s", strerror(errno));
 290                         return started;
 291                 }
 292
 293                 rb_set_buffers(F1, READBUF_SIZE);
 294                 rb_set_buffers(F2, READBUF_SIZE);
 295                 rb_snprintf(fdarg, sizeof(fdarg), "%d", rb_get_fd(F2));
 296                 rb_setenv("CTL_FD", fdarg, 1);
 297                 rb_pipe(&P1, &P2, "SSL/TLS pipe");
 298                 rb_snprintf(fdarg, sizeof(fdarg), "%d", rb_get_fd(P1));
 299                 rb_setenv("CTL_PIPE", fdarg, 1);
 300                 rb_snprintf(s_pid, sizeof(s_pid), "%d", (int)getpid());
 301                 rb_setenv("CTL_PPID", s_pid, 1);
 302 #ifdef _WIN32
 303                 SetHandleInformation((HANDLE) rb_get_fd(F2), HANDLE_FLAG_INHERIT, 1);
 304                 SetHandleInformation((HANDLE) rb_get_fd(P1), HANDLE_FLAG_INHERIT, 1);
 305 #endif
 306
 307                 pid = rb_spawn_process(ssld_path, (const char **) parv);
 308                 if(pid == -1)
 309                 {
 310                         ilog(L_MAIN, "Unable to create ssld: %s\n", strerror(errno));
 311                         rb_close(F1);
 312                         rb_close(F2);
 313                         rb_close(P1);
 314                         rb_close(P2);
 315                         return started;
 316                 }
 317                 started++;
 318                 rb_close(F2);
 319                 rb_close(P1);
 320                 ctl = allocate_ssl_daemon(F1, P2, pid);
 321                 if(ssl_ok)
 322                 {
 323                         if(ConfigFileEntry.use_egd && (ConfigFileEntry.egdpool_path != NULL))
 324                                 send_init_prng(ctl, RB_PRNG_EGD, ConfigFileEntry.egdpool_path);
 325                         else
 326                                 send_init_prng(ctl, RB_PRNG_DEFAULT, NULL);
 327                 }
 328                 if(ssl_ok && ssl_cert != NULL && ssl_private_key != NULL)
 329                         send_new_ssl_certs_one(ctl, ssl_cert, ssl_private_key,
 330                                                ssl_dh_params != NULL ? ssl_dh_params : "");
 331                 ssl_read_ctl(ctl->F, ctl);
 332                 ssl_do_pipe(P2, ctl);
 333
 334         }
 335         return started;
 336 }
 337
 338 static void
 339 ssl_process_zipstats(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf)
 340 {
 341         struct Client *server;
 342         struct ZipStats *zips;
 343         int parc;
 344         char *parv[7];
 345         parc = rb_string_to_array(ctl_buf->buf, parv, 6);
 346         server = find_server(NULL, parv[1]);
 347         if(server == NULL || server->localClient == NULL || !IsCapable(server, CAP_ZIP))
 348                 return;
 349         if(server->localClient->zipstats == NULL)
 350                 server->localClient->zipstats = rb_malloc(sizeof(struct ZipStats));
 351
 352         zips = server->localClient->zipstats;
 353
 354         zips->in += strtoull(parv[2], NULL, 10);
 355         zips->in_wire += strtoull(parv[3], NULL, 10);
 356         zips->out += strtoull(parv[4], NULL, 10);
 357         zips->out_wire += strtoull(parv[5], NULL, 10);
 358
 359         if(zips->in > 0)
 360                 zips->in_ratio = ((double) (zips->in - zips->in_wire) / (double) zips->in) * 100.00;
 361         else
 362                 zips->in_ratio = 0;
 363
 364         if(zips->out > 0)
 365                 zips->out_ratio = ((double) (zips->out - zips->out_wire) / (double) zips->out) * 100.00;
 366         else
 367                 zips->out_ratio = 0;
 368 }
 369
 370 static void
 371 ssl_process_dead_fd(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf)
 372 {
 373         struct Client *client_p;
 374         char reason[256];
 375         int32_t fd;
 376
 377         if(ctl_buf->buflen < 6)
 378                 return;         /* bogus message..drop it.. XXX should warn here */
 379
 380         fd = buf_to_int32(&ctl_buf->buf[1]);
 381         rb_strlcpy(reason, &ctl_buf->buf[5], sizeof(reason));
 382         client_p = find_cli_fd_hash(fd);
 383         if(client_p == NULL)
 384                 return;
 385         if(IsAnyServer(client_p) || IsRegistered(client_p))
 386         {
 387                 /* read any last moment ERROR, QUIT or the like -- jilles */
 388                 if (!strcmp(reason, "Remote host closed the connection"))
 389                         read_packet(client_p->localClient->F, client_p);
 390                 if (IsAnyDead(client_p))
 391                         return;
 392         }
 393         if(IsAnyServer(client_p))
 394         {
 395                 sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) && !IsServer(client_p) ? L_NETWIDE : L_ALL, "ssld error for %s: %s", client_p->name, reason);
 396                 ilog(L_SERVER, "ssld error for %s: %s", log_client_name(client_p, SHOW_IP), reason);
 397         }
 398         exit_client(client_p, client_p, &me, reason);
 399 }
 400
 401 static void
 402 ssl_process_cmd_recv(ssl_ctl_t * ctl)
 403 {
 404         static const char *cannot_setup_ssl = "ssld cannot setup ssl, check your certificates and private key";
 405         static const char *no_ssl_or_zlib = "ssld has neither SSL/TLS or zlib support killing all sslds";
 406         rb_dlink_node *ptr, *next;
 407         ssl_ctl_buf_t *ctl_buf;
 408         if(ctl->dead)
 409                 return;
 410         RB_DLINK_FOREACH_SAFE(ptr, next, ctl->readq.head)
 411         {
 412                 ctl_buf = ptr->data;
 413                 switch (*ctl_buf->buf)
 414                 {
 415                 case 'N':
 416                         ssl_ok = 0;     /* ssld says it can't do ssl/tls */
 417                         break;
 418                 case 'D':
 419                         ssl_process_dead_fd(ctl, ctl_buf);
 420                         break;
 421                 case 'S':
 422                         ssl_process_zipstats(ctl, ctl_buf);
 423                         break;
 424                 case 'I':
 425                         ssl_ok = 0;
 426                         ilog(L_MAIN, cannot_setup_ssl);
 427                         sendto_realops_snomask(SNO_GENERAL, L_ALL, cannot_setup_ssl);
 428                 case 'U':
 429                         zlib_ok = 0;
 430                         ssl_ok = 0;
 431                         ilog(L_MAIN, no_ssl_or_zlib);
 432                         sendto_realops_snomask(SNO_GENERAL, L_ALL, no_ssl_or_zlib);
 433                         ssl_killall();
 434                         break;
 435                 case 'z':
 436                         zlib_ok = 0;
 437                         break;
 438                 default:
 439                         ilog(L_MAIN, "Received invalid command from ssld: %s", ctl_buf->buf);
 440                         sendto_realops_snomask(SNO_GENERAL, L_ALL, "Received invalid command from ssld");
 441                         break;
 442                 }
 443                 rb_dlinkDelete(ptr, &ctl->readq);
 444                 rb_free(ctl_buf->buf);
 445                 rb_free(ctl_buf);
 446         }
 447
 448 }
 449
 450
 451 static void
 452 ssl_read_ctl(rb_fde_t * F, void *data)
 453 {
 454         ssl_ctl_buf_t *ctl_buf;
 455         ssl_ctl_t *ctl = data;
 456         int retlen;
 457
 458         if(ctl->dead)
 459                 return;
 460         do
 461         {
 462                 ctl_buf = rb_malloc(sizeof(ssl_ctl_buf_t));
 463                 ctl_buf->buf = rb_malloc(READSIZE);
 464                 retlen = rb_recv_fd_buf(ctl->F, ctl_buf->buf, READSIZE, ctl_buf->F, 4);
 465                 ctl_buf->buflen = retlen;
 466                 if(retlen <= 0)
 467                 {
 468                         rb_free(ctl_buf->buf);
 469                         rb_free(ctl_buf);
 470                 }
 471                 else
 472                         rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->readq);
 473         }
 474         while(retlen > 0);
 475
 476         if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno)))
 477         {
 478                 ssl_dead(ctl);
 479                 return;
 480         }
 481         ssl_process_cmd_recv(ctl);
 482         rb_setselect(ctl->F, RB_SELECT_READ, ssl_read_ctl, ctl);
 483 }
 484
 485 static ssl_ctl_t *
 486 which_ssld(void)
 487 {
 488         ssl_ctl_t *ctl, *lowest = NULL;
 489         rb_dlink_node *ptr;
 490
 491         RB_DLINK_FOREACH(ptr, ssl_daemons.head)
 492         {
 493                 ctl = ptr->data;
 494                 if(ctl->dead)
 495                         continue;
 496                 if(lowest == NULL)
 497                 {
 498                         lowest = ctl;
 499                         continue;
 500                 }
 501                 if(ctl->cli_count < lowest->cli_count)
 502                         lowest = ctl;
 503         }
 504         return (lowest);
 505 }
 506
 507 static void
 508 ssl_write_ctl(rb_fde_t * F, void *data)
 509 {
 510         ssl_ctl_t *ctl = data;
 511         ssl_ctl_buf_t *ctl_buf;
 512         rb_dlink_node *ptr, *next;
 513         int retlen, x;
 514
 515         if(ctl->dead)
 516                 return;
 517
 518         RB_DLINK_FOREACH_SAFE(ptr, next, ctl->writeq.head)
 519         {
 520                 ctl_buf = ptr->data;
 521                 /* in theory unix sock_dgram shouldn't ever short write this.. */
 522                 retlen = rb_send_fd_buf(ctl->F, ctl_buf->F, ctl_buf->nfds, ctl_buf->buf, ctl_buf->buflen, ctl->pid);
 523                 if(retlen > 0)
 524                 {
 525                         rb_dlinkDelete(ptr, &ctl->writeq);
 526                         for(x = 0; x < ctl_buf->nfds; x++)
 527                                 rb_close(ctl_buf->F[x]);
 528                         rb_free(ctl_buf->buf);
 529                         rb_free(ctl_buf);
 530
 531                 }
 532                 if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno)))
 533                 {
 534                         ssl_dead(ctl);
 535                         return;
 536                 }
 537                 else
 538                 {
 539                         rb_setselect(ctl->F, RB_SELECT_WRITE, ssl_write_ctl, ctl);
 540                 }
 541         }
 542 }
 543
 544 static void
 545 ssl_cmd_write_queue(ssl_ctl_t * ctl, rb_fde_t ** F, int count, const void *buf, size_t buflen)
 546 {
 547         ssl_ctl_buf_t *ctl_buf;
 548         int x;
 549
 550         /* don't bother */
 551         if(ctl->dead)
 552                 return;
 553
 554         ctl_buf = rb_malloc(sizeof(ssl_ctl_buf_t));
 555         ctl_buf->buf = rb_malloc(buflen);
 556         memcpy(ctl_buf->buf, buf, buflen);
 557         ctl_buf->buflen = buflen;
 558
 559         for(x = 0; x < count && x < MAXPASSFD; x++)
 560         {
 561                 ctl_buf->F[x] = F[x];
 562         }
 563         ctl_buf->nfds = count;
 564         rb_dlinkAddTail(ctl_buf, &ctl_buf->node, &ctl->writeq);
 565         ssl_write_ctl(ctl->F, ctl);
 566 }
 567
 568
 569 static void
 570 send_new_ssl_certs_one(ssl_ctl_t * ctl, const char *ssl_cert, const char *ssl_private_key, const char *ssl_dh_params)
 571 {
 572         size_t len;
 573
 574         len = strlen(ssl_cert) + strlen(ssl_private_key) + strlen(ssl_dh_params) + 5;
 575         if(len > sizeof(tmpbuf))
 576         {
 577                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 578                                        "Parameters for send_new_ssl_certs_one too long (%zu > %zu) to pass to ssld, not sending...",
 579                                        len, sizeof(tmpbuf));
 580                 ilog(L_MAIN,
 581                      "Parameters for send_new_ssl_certs_one too long (%zu > %zu) to pass to ssld, not sending...",
 582                      len, sizeof(tmpbuf));
 583                 return;
 584         }
 585         len = rb_snprintf(tmpbuf, sizeof(tmpbuf), "K%c%s%c%s%c%s%c", nul, ssl_cert, nul,
 586                           ssl_private_key, nul, ssl_dh_params, nul);
 587         ssl_cmd_write_queue(ctl, NULL, 0, tmpbuf, len);
 588 }
 589
 590 static void
 591 send_init_prng(ssl_ctl_t * ctl, prng_seed_t seedtype, const char *path)
 592 {
 593         size_t len;
 594         const char *s;
 595         uint8_t seed = (uint8_t) seedtype;
 596
 597         if(path == NULL)
 598                 s = "";
 599         else
 600                 s = path;
 601
 602         len = strlen(s) + 3;
 603         if(len > sizeof(tmpbuf))
 604         {
 605                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 606                                        "Parameters for send_init_prng too long (%zd > %zd) to pass to ssld, not sending...",
 607                                        len, sizeof(tmpbuf));
 608                 ilog(L_MAIN,
 609                      "Parameters for send_init_prng too long (%zd > %zd) to pass to ssld, not sending...",
 610                      len, sizeof(tmpbuf));
 611                 return;
 612
 613         }
 614         len = rb_snprintf(tmpbuf, sizeof(tmpbuf), "I%c%s%c", seed, s, nul);
 615         ssl_cmd_write_queue(ctl, NULL, 0, tmpbuf, len);
 616 }
 617
 618 void
 619 send_new_ssl_certs(const char *ssl_cert, const char *ssl_private_key, const char *ssl_dh_params)
 620 {
 621         rb_dlink_node *ptr;
 622         if(ssl_cert == NULL || ssl_private_key == NULL || ssl_dh_params == NULL)
 623         {
 624                 ssl_ok = 0;
 625                 return;
 626         }
 627         RB_DLINK_FOREACH(ptr, ssl_daemons.head)
 628         {
 629                 ssl_ctl_t *ctl = ptr->data;
 630                 send_new_ssl_certs_one(ctl, ssl_cert, ssl_private_key, ssl_dh_params);
 631         }
 632 }
 633
 634
 635 ssl_ctl_t *
 636 start_ssld_accept(rb_fde_t * sslF, rb_fde_t * plainF, int32_t id)
 637 {
 638         rb_fde_t *F[2];
 639         ssl_ctl_t *ctl;
 640         char buf[5];
 641         F[0] = sslF;
 642         F[1] = plainF;
 643
 644         buf[0] = 'A';
 645         int32_to_buf(&buf[1], id);
 646         ctl = which_ssld();
 647         ctl->cli_count++;
 648         ssl_cmd_write_queue(ctl, F, 2, buf, sizeof(buf));
 649         return ctl;
 650 }
 651
 652 ssl_ctl_t *
 653 start_ssld_connect(rb_fde_t * sslF, rb_fde_t * plainF, int32_t id)
 654 {
 655         rb_fde_t *F[2];
 656         ssl_ctl_t *ctl;
 657         char buf[5];
 658         F[0] = sslF;
 659         F[1] = plainF;
 660
 661         buf[0] = 'C';
 662         int32_to_buf(&buf[1], id);
 663
 664         ctl = which_ssld();
 665         ctl->cli_count++;
 666         ssl_cmd_write_queue(ctl, F, 2, buf, sizeof(buf));
 667         return ctl;
 668 }
 669
 670 void
 671 ssld_decrement_clicount(ssl_ctl_t * ctl)
 672 {
 673         if(ctl == NULL)
 674                 return;
 675
 676         ctl->cli_count--;
 677         if(ctl->dead && !ctl->cli_count)
 678         {
 679                 free_ssl_daemon(ctl);
 680         }
 681 }
 682
 683 /*
 684  * what we end up sending to the ssld process for ziplinks is the following
 685  * Z[ourfd][level][RECVQ]
 686  * Z = ziplinks command = buf[0]
 687  * ourfd = Our end of the socketpair = buf[1..4]
 688  * level = zip level buf[5]
 689  * recvqlen = our recvq len = buf[6-7]
 690  * recvq = any data we read prior to starting ziplinks
 691  */
 692 void
 693 start_zlib_session(void *data)
 694 {
 695         struct Client *server = (struct Client *) data;
 696         uint16_t recvqlen;
 697         uint8_t level;
 698         void *xbuf;
 699
 700         rb_fde_t *F[2];
 701         rb_fde_t *xF1, *xF2;
 702         char *buf;
 703         char buf2[9];
 704         void *recvq_start;
 705
 706         size_t hdr = (sizeof(uint8_t) * 2) + sizeof(int32_t);
 707         size_t len;
 708         int cpylen, left;
 709
 710         server->localClient->event = NULL;
 711
 712         recvqlen = rb_linebuf_len(&server->localClient->buf_recvq);
 713
 714         len = recvqlen + hdr;
 715
 716         if(len > READBUF_SIZE)
 717         {
 718                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 719                                        "ssld - attempted to pass message of %zd len, max len %d, giving up",
 720                                        len, READBUF_SIZE);
 721                 ilog(L_MAIN, "ssld - attempted to pass message of %zd len, max len %d, giving up", len, READBUF_SIZE);
 722                 exit_client(server, server, server, "ssld readbuf exceeded");
 723                 return;
 724         }
 725
 726         buf = rb_malloc(len);
 727         level = ConfigFileEntry.compression_level;
 728
 729         int32_to_buf(&buf[1], rb_get_fd(server->localClient->F));
 730         buf[5] = (char) level;
 731
 732         recvq_start = &buf[6];
 733         server->localClient->zipstats = rb_malloc(sizeof(struct ZipStats));
 734
 735         xbuf = recvq_start;
 736         left = recvqlen;
 737
 738         do
 739         {
 740                 cpylen = rb_linebuf_get(&server->localClient->buf_recvq, xbuf, left, LINEBUF_PARTIAL, LINEBUF_RAW);
 741                 left -= cpylen;
 742                 xbuf = (void *) (((uintptr_t) xbuf) + cpylen);
 743         }
 744         while(cpylen > 0);
 745
 746         /* Pass the socket to ssld. */
 747         *buf = 'Z';
 748         if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF1, &xF2, "Initial zlib socketpairs") == -1)
 749         {
 750                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "Error creating zlib socketpair - %s", strerror(errno));
 751                 ilog(L_MAIN, "Error creating zlib socketpairs - %s", strerror(errno));
 752                 exit_client(server, server, server, "Error creating zlib socketpair");
 753                 return;
 754         }
 755
 756         if(IsSSL(server))
 757         {
 758                 /* tell ssld the new connid for the ssl part*/
 759                 buf2[0] = 'Y';
 760                 int32_to_buf(&buf2[1], rb_get_fd(server->localClient->F));
 761                 int32_to_buf(&buf2[5], rb_get_fd(xF2));
 762                 ssl_cmd_write_queue(server->localClient->ssl_ctl, NULL, 0, buf2, sizeof(buf2));
 763         }
 764
 765
 766         F[0] = server->localClient->F;
 767         F[1] = xF1;
 768         del_from_cli_fd_hash(server);
 769         server->localClient->F = xF2;
 770         /* need to redo as what we did before isn't valid now */
 771         int32_to_buf(&buf[1], rb_get_fd(server->localClient->F));
 772         add_to_cli_fd_hash(server);
 773
 774         server->localClient->z_ctl = which_ssld();
 775         server->localClient->z_ctl->cli_count++;
 776         ssl_cmd_write_queue(server->localClient->z_ctl, F, 2, buf, len);
 777         rb_free(buf);
 778 }
 779
 780 static void
 781 collect_zipstats(void *unused)
 782 {
 783         rb_dlink_node *ptr;
 784         struct Client *target_p;
 785         char buf[sizeof(uint8_t) + sizeof(int32_t) + HOSTLEN];
 786         void *odata;
 787         size_t len;
 788         int32_t id;
 789
 790         buf[0] = 'S';
 791         odata = buf + sizeof(uint8_t) + sizeof(int32_t);
 792
 793         RB_DLINK_FOREACH(ptr, serv_list.head)
 794         {
 795                 target_p = ptr->data;
 796                 if(IsCapable(target_p, CAP_ZIP))
 797                 {
 798                         len = sizeof(uint8_t) + sizeof(uint32_t);
 799
 800                         id = rb_get_fd(target_p->localClient->F);
 801                         int32_to_buf(&buf[1], rb_get_fd(target_p->localClient->F));
 802                         rb_strlcpy(odata, target_p->name, (sizeof(buf) - len));
 803                         len += strlen(odata) + 1;       /* Get the \0 as well */
 804                         ssl_cmd_write_queue(target_p->localClient->z_ctl, NULL, 0, buf, len);
 805                 }
 806         }
 807 }
 808
 809 static void
 810 cleanup_dead_ssl(void *unused)
 811 {
 812         rb_dlink_node *ptr, *next;
 813         ssl_ctl_t *ctl;
 814         RB_DLINK_FOREACH_SAFE(ptr, next, ssl_daemons.head)
 815         {
 816                 ctl = ptr->data;
 817                 if(ctl->dead && !ctl->cli_count)
 818                 {
 819                         free_ssl_daemon(ctl);
 820                 }
 821         }
 822 }
 823
 824 int
 825 get_ssld_count(void)
 826 {
 827         return ssld_count;
 828 }
 829
 830 void
 831 init_ssld(void)
 832 {
 833         rb_event_addish("collect_zipstats", collect_zipstats, NULL, ZIPSTATS_TIME);
 834         rb_event_addish("cleanup_dead_ssld", cleanup_dead_ssl, NULL, 1200);
 835 }