src/inspircd_io.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include <sys/time.h>
  21 #include <sys/resource.h>
  22 #include <sys/types.h>
  23 #include <string>
  24 #include <unistd.h>
  25 #include <sstream>
  26 #include <iostream>
  27 #include <fstream>
  28 #include "inspircd.h"
  29 #include "inspircd_io.h"
  30 #include "inspircd_util.h"
  31 #include "inspstring.h"
  32 #include "helperfuncs.h"
  33
  34 extern FILE *log_file;
  35 extern int boundPortCount;
  36 extern int openSockfd[MAXSOCKS];
  37 extern time_t TIME;
  38 extern bool unlimitcore;
  39 extern int MaxConn;
  40 std::vector<std::string> include_stack;
  41
  42 void WriteOpers(char* text, ...);
  43
  44 void Exit (int status)
  45 {
  46         if (log_file)
  47                 fclose(log_file);
  48         send_error("Server shutdown.");
  49         exit (status);
  50 }
  51
  52 void Killed(int status)
  53 {
  54         if (log_file)
  55                 fclose(log_file);
  56         send_error("Server terminated.");
  57         exit(status);
  58 }
  59
  60 void Rehash(int status)
  61 {
  62         WriteOpers("Rehashing config file %s due to SIGHUP",CONFIG_FILE);
  63         ReadConfig(false,NULL);
  64 }
  65
  66
  67
  68 void Start (void)
  69 {
  70         printf("\033[1;32mInspire Internet Relay Chat Server, compiled %s at %s\n",__DATE__,__TIME__);
  71         printf("(C) ChatSpike Development team.\033[0m\n\n");
  72         printf("Developers:\033[1;32m     Brain, FrostyCoolSlug\033[0m\n");
  73         printf("Documentation:\033[1;32m  FrostyCoolSlug, w00t\033[0m\n");
  74         printf("Testers:\033[1;32m        typobox43, piggles, Lord_Zathras, CC\033[0m\n");
  75         printf("Name concept:\033[1;32m   Lord_Zathras\033[0m\n\n");
  76 }
  77
  78 void WritePID(std::string filename)
  79 {
  80         ofstream outfile(filename.c_str());
  81         if (outfile.is_open())
  82         {
  83                 outfile << getpid();
  84                 outfile.close();
  85         }
  86         else
  87         {
  88                 printf("Failed to write PID-file '%s', exiting.\n",filename.c_str());
  89                 log(DEFAULT,"Failed to write PID-file '%s', exiting.",filename.c_str());
  90                 Exit(0);
  91         }
  92 }
  93
  94
  95 int DaemonSeed (void)
  96 {
  97         int childpid;
  98         signal (SIGALRM, SIG_IGN);
  99         signal (SIGHUP, Rehash);
 100         signal (SIGPIPE, SIG_IGN);
 101         signal (SIGTERM, Exit);
 102         signal (SIGSEGV, Error);
 103         if ((childpid = fork ()) < 0)
 104                 return (ERROR);
 105         else if (childpid > 0)
 106                 exit (0);
 107         setsid ();
 108         umask (007);
 109         printf("InspIRCd Process ID: \033[1;32m%lu\033[0m\n",(unsigned long)getpid());
 110
 111         setpriority(PRIO_PROCESS,(int)getpid(),15);
 112
 113         if (unlimitcore)
 114         {
 115                 rlimit rl;
 116                 if (getrlimit(RLIMIT_CORE, &rl) == -1)
 117                 {
 118                         log(DEFAULT,"Failed to getrlimit()!");
 119                         return(FALSE);
 120                 }
 121                 else
 122                 {
 123                         rl.rlim_cur = rl.rlim_max;
 124                         if (setrlimit(RLIMIT_CORE, &rl) == -1)
 125                                 log(DEFAULT,"setrlimit() failed, cannot increase coredump size.");
 126                 }
 127         }
 128
 129         return (TRUE);
 130 }
 131
 132
 133 /* Make Sure Modules Are Avaliable!
 134  * (BugFix By Craig.. See? I do work! :p)
 135  * Modified by brain, requires const char*
 136  * to work with other API functions
 137  */
 138
 139 bool FileExists (const char* file)
 140 {
 141         FILE *input;
 142         if ((input = fopen (file, "r")) == NULL)
 143         {
 144                 return(false);
 145         }
 146         else
 147         {
 148                 fclose (input);
 149                 return(true);
 150         }
 151 }
 152
 153 /* ConfProcess does the following things to a config line in the following order:
 154  *
 155  * Processes the line for syntax errors as shown below
 156  *      (1) Line void of quotes or equals (a malformed, illegal tag format)
 157  *      (2) Odd number of quotes on the line indicating a missing quote
 158  *      (3) number of equals signs not equal to number of quotes / 2 (missing an equals sign)
 159  *      (4) Spaces between the opening bracket (<) and the keyword
 160  *      (5) Spaces between a keyword and an equals sign
 161  *      (6) Spaces between an equals sign and a quote
 162  * Removes trailing spaces
 163  * Removes leading spaces
 164  * Converts tabs to spaces
 165  * Turns multiple spaces that are outside of quotes into single spaces
 166  */
 167
 168 std::string ConfProcess(char* buffer, long linenumber, std::stringstream* errorstream, bool &error, std::string filename)
 169 {
 170         long number_of_quotes = 0;
 171         long number_of_equals = 0;
 172         bool has_open_bracket = false;
 173         bool in_quotes = false;
 174         error = false;
 175         if (!buffer)
 176         {
 177                 return "";
 178         }
 179         // firstly clean up the line by stripping spaces from the start and end and converting tabs to spaces
 180         for (unsigned int d = 0; d < strlen(buffer); d++)
 181                 if ((buffer[d]) == 9)
 182                         buffer[d] = ' ';
 183         while ((buffer[0] == ' ') && (strlen(buffer)>0)) buffer++;
 184         while ((buffer[strlen(buffer)-1] == ' ') && (strlen(buffer)>0)) buffer[strlen(buffer)-1] = '\0';
 185
 186         // empty lines are syntactically valid, as are comments
 187         if (!(*buffer) || buffer[0] == '#')
 188                 return "";
 189
 190         for (unsigned int c = 0; c < strlen(buffer); c++)
 191         {
 192                 // convert all spaces that are OUTSIDE quotes into hardspace (0xA0) as this will make them easier to
 193                 // search and replace later :)
 194                 if ((!in_quotes) && (buffer[c] == ' '))
 195                         buffer[c] = '\xA0';
 196                 if ((buffer[c] == '<') && (!in_quotes))
 197                 {
 198                         has_open_bracket = true;
 199                         if (strlen(buffer) == 1)
 200                         {
 201                                 *errorstream << "Tag without identifier at " << filename << ":" << linenumber << endl;
 202                                 error = true;
 203                                 return "";
 204                         }
 205                         else if ((tolower(buffer[c+1]) < 'a') || (tolower(buffer[c+1]) > 'z'))
 206                         {
 207                                 *errorstream << "Invalid characters in identifier at " << filename << ":" << linenumber << endl;
 208                                 error = true;
 209                                 return "";
 210                         }
 211                 }
 212                 if (buffer[c] == '"')
 213                 {
 214                         number_of_quotes++;
 215                         in_quotes = (!in_quotes);
 216                 }
 217                 if ((buffer[c] == '=') && (!in_quotes))
 218                 {
 219                         number_of_equals++;
 220                         if (strlen(buffer) == c)
 221                         {
 222                                 *errorstream << "Variable without a value at " << filename << ":" << linenumber << endl;
 223                                 error = true;
 224                                 return "";
 225                         }
 226                         else if (buffer[c+1] != '"')
 227                         {
 228                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 229                                 error = true;
 230                                 return "";
 231                         }
 232                         else if (!c)
 233                         {
 234                                 *errorstream << "Value without a variable (line starts with '=') at " << filename << ":" << linenumber << endl;
 235                                 error = true;
 236                                 return "";
 237                         }
 238                         else if (buffer[c-1] == '\xA0')
 239                         {
 240                                 *errorstream << "Variable name not followed immediately by its value at " << filename << ":" << linenumber << endl;
 241                                 error = true;
 242                                 return "";
 243                         }
 244                 }
 245         }
 246         // no quotes, and no equals. something freaky.
 247         if ((!number_of_quotes) || (!number_of_equals) && (strlen(buffer)>2) && (buffer[0]=='<'))
 248         {
 249                 *errorstream << "Malformed tag at " << filename << ":" << linenumber << endl;
 250                 error = true;
 251                 return "";
 252         }
 253         // odd number of quotes. thats just wrong.
 254         if ((number_of_quotes % 2) != 0)
 255         {
 256                 *errorstream << "Missing \" at " << filename << ":" << linenumber << endl;
 257                 error = true;
 258                 return "";
 259         }
 260         if (number_of_equals < (number_of_quotes/2))
 261         {
 262                 *errorstream << "Missing '=' at " << filename << ":" << linenumber << endl;
 263         }
 264         if (number_of_equals > (number_of_quotes/2))
 265         {
 266                 *errorstream << "Too many '=' at " << filename << ":" << linenumber << endl;
 267         }
 268
 269         std::string parsedata = buffer;
 270         // turn multispace into single space
 271         while (parsedata.find("\xA0\xA0") != std::string::npos)
 272         {
 273                 parsedata.erase(parsedata.find("\xA0\xA0"),1);
 274         }
 275
 276         // turn our hardspace back into softspace
 277         for (unsigned int d = 0; d < parsedata.length(); d++)
 278         {
 279                 if (parsedata[d] == '\xA0')
 280                         parsedata[d] = ' ';
 281         }
 282
 283         // and we're done, the line is fine!
 284         return parsedata;
 285 }
 286
 287 int fgets_safe(char* buffer, size_t maxsize, FILE* &file)
 288 {
 289         char c_read = '\0';
 290         unsigned int bufptr = 0;
 291         while ((!feof(file)) && (c_read != '\n') && (c_read != '\r') && (bufptr < maxsize))
 292         {
 293                 c_read = fgetc(file);
 294                 if ((c_read != '\n') && (c_read != '\r'))
 295                         buffer[bufptr++] = c_read;
 296         }
 297         buffer[bufptr] = '\0';
 298         return bufptr;
 299 }
 300
 301 bool LoadConf(const char* filename, std::stringstream *target, std::stringstream* errorstream)
 302 {
 303         target->str("");
 304         errorstream->str("");
 305         long linenumber = 1;
 306         // first, check that the file exists before we try to do anything with it
 307         if (!FileExists(filename))
 308         {
 309                 *errorstream << "File " << filename << " not found." << endl;
 310                 return false;
 311         }
 312         // Fix the chmod of the file to restrict it to the current user and group
 313         chmod(filename,0600);
 314         for (unsigned int t = 0; t < include_stack.size(); t++)
 315         {
 316                 if (std::string(filename) == include_stack[t])
 317                 {
 318                         *errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
 319                         return false;
 320                 }
 321         }
 322         include_stack.push_back(filename);
 323         // now open it
 324         FILE* conf = fopen(filename,"r");
 325         char buffer[MAXBUF];
 326         if (conf)
 327         {
 328                 while (!feof(conf))
 329                 {
 330                         if (fgets_safe(buffer, MAXBUF, conf))
 331                         {
 332                                 if ((!feof(conf)) && (buffer) && (strlen(buffer)))
 333                                 {
 334                                         if ((buffer[0] != '#') && (buffer[0] != '\r')  && (buffer[0] != '\n'))
 335                                         {
 336                                                 if (!strncmp(buffer,"<include file=\"",15))
 337                                                 {
 338                                                         char* buf = buffer;
 339                                                         char confpath[10240],newconf[10240];
 340                                                         // include file directive
 341                                                         buf += 15;      // advance to filename
 342                                                         for (unsigned int j = 0; j < strlen(buf); j++)
 343                                                         {
 344                                                                 if (buf[j] == '\\')
 345                                                                         buf[j] = '/';
 346                                                                 if (buf[j] == '"')
 347                                                                 {
 348                                                                         buf[j] = '\0';
 349                                                                         break;
 350                                                                 }
 351                                                         }
 352                                                         log(DEFAULT,"Opening included file '%s'",buf);
 353                                                         if (*buf != '/')
 354                                                         {
 355                                                                 strlcpy(confpath,CONFIG_FILE,10240);
 356                                                                 if (strstr(confpath,"/inspircd.conf"))
 357                                                                 {
 358                                                                         // leaves us with just the path
 359                                                                         *(strstr(confpath,"/inspircd.conf")) = '\0';
 360                                                                 }
 361                                                                 snprintf(newconf,10240,"%s/%s",confpath,buf);
 362                                                         }
 363                                                         else snprintf(newconf,10240,"%s",buf);
 364                                                         std::stringstream merge(stringstream::in | stringstream::out);
 365                                                         // recursively call LoadConf and get the new data, use the same errorstream
 366                                                         if (LoadConf(newconf, &merge, errorstream))
 367                                                         {
 368                                                                 // append to the end of the file
 369                                                                 std::string newstuff = merge.str();
 370                                                                 *target << newstuff;
 371                                                         }
 372                                                         else
 373                                                         {
 374                                                                 // the error propogates up to its parent recursively
 375                                                                 // causing the config reader to bail at the top level.
 376                                                                 fclose(conf);
 377                                                                 return false;
 378                                                         }
 379                                                 }
 380                                                 else
 381                                                 {
 382                                                         bool error = false;
 383                                                         std::string data = ConfProcess(buffer,linenumber++,errorstream,error,filename);
 384                                                         if (error)
 385                                                         {
 386                                                                 return false;
 387                                                         }
 388                                                         *target << data;
 389                                                 }
 390                                         }
 391                                         else linenumber++;
 392                                 }
 393                         }
 394                 }
 395                 fclose(conf);
 396         }
 397         target->seekg(0);
 398         return true;
 399 }
 400
 401 /* Counts the number of tags of a certain type within the config file, e.g. to enumerate opers */
 402
 403 int EnumConf(std::stringstream *config, const char* tag)
 404 {
 405         int ptr = 0;
 406         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 407         int in_token, in_quotes, tptr, idx = 0;
 408
 409         const char* buf = config->str().c_str();
 410         long bptr = 0;
 411         long len = strlen(buf);
 412
 413         ptr = 0;
 414         in_token = 0;
 415         in_quotes = 0;
 416         lastc = '\0';
 417         while (bptr<len)
 418         {
 419                 lastc = c;
 420                 c = buf[bptr++];
 421                 if ((c == '#') && (lastc == '\n'))
 422                 {
 423                         while ((c != '\n') && (bptr<len))
 424                         {
 425                                 lastc = c;
 426                                 c = buf[bptr++];
 427                         }
 428                 }
 429                 if ((c == '<') && (!in_quotes))
 430                 {
 431                         tptr = 0;
 432                         in_token = 1;
 433                         do {
 434                                 c = buf[bptr++];
 435                                 if (c != ' ')
 436                                 {
 437                                         c_tag[tptr++] = c;
 438                                         c_tag[tptr] = '\0';
 439                                 }
 440                         } while (c != ' ');
 441                 }
 442                 if (c == '"')
 443                 {
 444                         in_quotes = (!in_quotes);
 445                 }
 446                 if ((c == '>') && (!in_quotes))
 447                 {
 448                         in_token = 0;
 449                         if (!strcmp(c_tag,tag))
 450                         {
 451                                 /* correct tag, but wrong index */
 452                                 idx++;
 453                         }
 454                         c_tag[0] = '\0';
 455                         buffer[0] = '\0';
 456                         ptr = 0;
 457                         tptr = 0;
 458                 }
 459                 if (c != '>')
 460                 {
 461                         if ((in_token) && (c != '\n') && (c != '\r'))
 462                         {
 463                                 buffer[ptr++] = c;
 464                                 buffer[ptr] = '\0';
 465                         }
 466                 }
 467         }
 468         return idx;
 469 }
 470
 471 /* Counts the number of values within a certain tag */
 472
 473 int EnumValues(std::stringstream *config, const char* tag, int index)
 474 {
 475         int ptr = 0;
 476         char buffer[MAXBUF], c_tag[MAXBUF], c, lastc;
 477         int in_token, in_quotes, tptr, idx = 0;
 478
 479         bool correct_tag = false;
 480         int num_items = 0;
 481
 482         const char* buf = config->str().c_str();
 483         long bptr = 0;
 484         long len = strlen(buf);
 485
 486         ptr = 0;
 487         in_token = 0;
 488         in_quotes = 0;
 489         lastc = '\0';
 490         while (bptr<len)
 491         {
 492                 lastc = c;
 493                 c = buf[bptr++];
 494                 if ((c == '#') && (lastc == '\n'))
 495                 {
 496                         while ((c != '\n') && (bptr<len))
 497                         {
 498                                 lastc = c;
 499                                 c = buf[bptr++];
 500                         }
 501                 }
 502                 if ((c == '<') && (!in_quotes))
 503                 {
 504                         tptr = 0;
 505                         in_token = 1;
 506                         do {
 507                                 c = buf[bptr++];
 508                                 if (c != ' ')
 509                                 {
 510                                         c_tag[tptr++] = c;
 511                                         c_tag[tptr] = '\0';
 512
 513                                         if ((!strcmp(c_tag,tag)) && (idx == index))
 514                                         {
 515                                                 correct_tag = true;
 516                                         }
 517                                 }
 518                         } while (c != ' ');
 519                 }
 520                 if (c == '"')
 521                 {
 522                         in_quotes = (!in_quotes);
 523                 }
 524
 525                 if ( (correct_tag) && (!in_quotes) && ( (c == ' ') || (c == '\n') || (c == '\r') ) )
 526                 {
 527                         num_items++;
 528                 }
 529                 if ((c == '>') && (!in_quotes))
 530                 {
 531                         in_token = 0;
 532                         if (correct_tag)
 533                                 correct_tag = false;
 534                         if (!strcmp(c_tag,tag))
 535                         {
 536                                 /* correct tag, but wrong index */
 537                                 idx++;
 538                         }
 539                         c_tag[0] = '\0';
 540                         buffer[0] = '\0';
 541                         ptr = 0;
 542                         tptr = 0;
 543                 }
 544                 if (c != '>')
 545                 {
 546                         if ((in_token) && (c != '\n') && (c != '\r'))
 547                         {
 548                                 buffer[ptr++] = c;
 549                                 buffer[ptr] = '\0';
 550                         }
 551                 }
 552         }
 553         return num_items+1;
 554 }
 555
 556
 557
 558 int ConfValueEnum(char* tag, std::stringstream* config)
 559 {
 560         return EnumConf(config,tag);
 561 }
 562
 563
 564
 565 /* Retrieves a value from the config file. If there is more than one value of the specified
 566  * key and section (e.g. for opers etc) then the index value specifies which to retreive, e.g.
 567  *
 568  * ConfValue("oper","name",2,result);
 569  */
 570
 571 int ReadConf(std::stringstream *config, const char* tag, const char* var, int index, char *result)
 572 {
 573         int ptr = 0;
 574         char buffer[65535], c_tag[MAXBUF], c, lastc;
 575         int in_token, in_quotes, tptr, idx = 0;
 576         char* key;
 577
 578         const char* buf = config->str().c_str();
 579         long bptr = 0;
 580         long len = config->str().length();
 581
 582         ptr = 0;
 583         in_token = 0;
 584         in_quotes = 0;
 585         lastc = '\0';
 586         c_tag[0] = '\0';
 587         buffer[0] = '\0';
 588         while (bptr<len)
 589         {
 590                 lastc = c;
 591                 c = buf[bptr++];
 592                 // FIX: Treat tabs as spaces
 593                 if (c == 9)
 594                         c = 32;
 595                 if ((c == '<') && (!in_quotes))
 596                 {
 597                         tptr = 0;
 598                         in_token = 1;
 599                         do {
 600                                 c = buf[bptr++];
 601                                 if (c != ' ')
 602                                 {
 603                                         c_tag[tptr++] = c;
 604                                         c_tag[tptr] = '\0';
 605                                 }
 606                         // FIX: Tab can follow a tagname as well as space.
 607                         } while ((c != ' ') && (c != 9));
 608                 }
 609                 if (c == '"')
 610                 {
 611                         in_quotes = (!in_quotes);
 612                 }
 613                 if ((c == '>') && (!in_quotes))
 614                 {
 615                         in_token = 0;
 616                         if (idx == index)
 617                         {
 618                                 if (!strcmp(c_tag,tag))
 619                                 {
 620                                         if ((buffer) && (c_tag) && (var))
 621                                         {
 622                                                 key = strstr(buffer,var);
 623                                                 if (!key)
 624                                                 {
 625                                                         /* value not found in tag */
 626                                                         strcpy(result,"");
 627                                                         return 0;
 628                                                 }
 629                                                 else
 630                                                 {
 631                                                         key+=strlen(var);
 632                                                         while (key[0] !='"')
 633                                                         {
 634                                                                 if (!strlen(key))
 635                                                                 {
 636                                                                         /* missing quote */
 637                                                                         strcpy(result,"");
 638                                                                         return 0;
 639                                                                 }
 640                                                                 key++;
 641                                                         }
 642                                                         key++;
 643                                                         for (unsigned j = 0; j < strlen(key); j++)
 644                                                         {
 645                                                                 if (key[j] == '"')
 646                                                                 {
 647                                                                         key[j] = '\0';
 648                                                                 }
 649                                                         }
 650                                                         strlcpy(result,key,MAXBUF);
 651                                                         return 1;
 652                                                 }
 653                                         }
 654                                 }
 655                         }
 656                         if (!strcmp(c_tag,tag))
 657                         {
 658                                 /* correct tag, but wrong index */
 659                                 idx++;
 660                         }
 661                         c_tag[0] = '\0';
 662                         buffer[0] = '\0';
 663                         ptr = 0;
 664                         tptr = 0;
 665                 }
 666                 if (c != '>')
 667                 {
 668                         if ((in_token) && (c != '\n') && (c != '\r'))
 669                         {
 670                                 buffer[ptr++] = c;
 671                                 buffer[ptr] = '\0';
 672                         }
 673                 }
 674         }
 675         strcpy(result,""); // value or its tag not found at all
 676         return 0;
 677 }
 678
 679
 680
 681 int ConfValue(char* tag, char* var, int index, char *result,std::stringstream *config)
 682 {
 683         ReadConf(config, tag, var, index, result);
 684         return 0;
 685 }
 686
 687
 688
 689 // This will bind a socket to a port. It works for UDP/TCP
 690 int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
 691 {
 692         memset((char *)&server,0,sizeof(server));
 693         struct in_addr addy;
 694         inet_aton(addr,&addy);
 695         server.sin_family = AF_INET;
 696         if (!strcmp(addr,""))
 697         {
 698                 server.sin_addr.s_addr = htonl(INADDR_ANY);
 699         }
 700         else
 701         {
 702                 server.sin_addr = addy;
 703         }
 704         server.sin_port = htons(port);
 705         if (bind(sockfd,(struct sockaddr*)&server,sizeof(server))<0)
 706         {
 707                 return(ERROR);
 708         }
 709         else
 710         {
 711                 listen(sockfd, MaxConn);
 712                 return(TRUE);
 713         }
 714 }
 715
 716
 717 // Open a TCP Socket
 718 int OpenTCPSocket (void)
 719 {
 720         int sockfd;
 721         int on = 1;
 722         struct linger linger = { 0 };
 723
 724         if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
 725                 return (ERROR);
 726         else
 727         {
 728                 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
 729                 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
 730                 linger.l_onoff = 1;
 731                 linger.l_linger = 1;
 732                 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (const char*)&linger,sizeof(linger));
 733                 return (sockfd);
 734         }
 735 }