source3/web/cgi.c

   1 /*
   2    some simple CGI helper routines
   3    Copyright (C) Andrew Tridgell 1997-1998
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19
  20 #include "includes.h"
  21 #include "system/passwd.h"
  22 #include "system/filesys.h"
  23 #include "web/swat_proto.h"
  24 #include "intl/lang_tdb.h"
  25
  26 #define MAX_VARIABLES 10000
  27
  28 /* set the expiry on fixed pages */
  29 #define EXPIRY_TIME (60*60*24*7)
  30
  31 #ifdef DEBUG_COMMENTS
  32 extern void print_title(char *fmt, ...);
  33 #endif
  34
  35 struct cgi_var {
  36         char *name;
  37         char *value;
  38 };
  39
  40 static struct cgi_var variables[MAX_VARIABLES];
  41 static int num_variables;
  42 static int content_length;
  43 static int request_post;
  44 static char *query_string;
  45 static const char *baseurl;
  46 static char *pathinfo;
  47 static char *C_user;
  48 static bool inetd_server;
  49 static bool got_request;
  50
  51 static char *grab_line(FILE *f, int *cl)
  52 {
  53         char *ret = NULL;
  54         int i = 0;
  55         int len = 0;
  56
  57         while ((*cl)) {
  58                 int c;
  59
  60                 if (i == len) {
  61                         char *ret2;
  62                         if (len == 0) len = 1024;
  63                         else len *= 2;
  64                         ret2 = (char *)SMB_REALLOC_KEEP_OLD_ON_ERROR(ret, len);
  65                         if (!ret2) return ret;
  66                         ret = ret2;
  67                 }
  68
  69                 c = fgetc(f);
  70                 (*cl)--;
  71
  72                 if (c == EOF) {
  73                         (*cl) = 0;
  74                         break;
  75                 }
  76
  77                 if (c == '\r') continue;
  78
  79                 if (strchr_m("\n&", c)) break;
  80
  81                 ret[i++] = c;
  82
  83         }
  84
  85         if (ret) {
  86                 ret[i] = 0;
  87         }
  88         return ret;
  89 }
  90
  91 /**
  92  URL encoded strings can have a '+', which should be replaced with a space
  93
  94  (This was in rfc1738_unescape(), but that broke the squid helper)
  95 **/
  96
  97 static void plus_to_space_unescape(char *buf)
  98 {
  99         char *p=buf;
 100
 101         while ((p=strchr_m(p,'+')))
 102                 *p = ' ';
 103 }
 104
 105 /***************************************************************************
 106   load all the variables passed to the CGI program. May have multiple variables
 107   with the same name and the same or different values. Takes a file parameter
 108   for simulating CGI invocation eg loading saved preferences.
 109   ***************************************************************************/
 110 void cgi_load_variables(void)
 111 {
 112         static char *line;
 113         char *p, *s, *tok;
 114         int len, i;
 115         FILE *f = stdin;
 116
 117 #ifdef DEBUG_COMMENTS
 118         char dummy[100]="";
 119         print_title(dummy);
 120         d_printf("<!== Start dump in cgi_load_variables() %s ==>\n",__FILE__);
 121 #endif
 122
 123         if (!content_length) {
 124                 p = getenv("CONTENT_LENGTH");
 125                 len = p?atoi(p):0;
 126         } else {
 127                 len = content_length;
 128         }
 129
 130
 131         if (len > 0 &&
 132             (request_post ||
 133              ((s=getenv("REQUEST_METHOD")) &&
 134               strequal(s,"POST")))) {
 135                 while (len && (line=grab_line(f, &len))) {
 136                         p = strchr_m(line,'=');
 137                         if (!p) continue;
 138
 139                         *p = 0;
 140
 141                         variables[num_variables].name = SMB_STRDUP(line);
 142                         variables[num_variables].value = SMB_STRDUP(p+1);
 143
 144                         SAFE_FREE(line);
 145
 146                         if (!variables[num_variables].name ||
 147                             !variables[num_variables].value)
 148                                 continue;
 149
 150                         plus_to_space_unescape(variables[num_variables].value);
 151                         rfc1738_unescape(variables[num_variables].value);
 152                         plus_to_space_unescape(variables[num_variables].name);
 153                         rfc1738_unescape(variables[num_variables].name);
 154
 155 #ifdef DEBUG_COMMENTS
 156                         printf("<!== POST var %s has value \"%s\"  ==>\n",
 157                                variables[num_variables].name,
 158                                variables[num_variables].value);
 159 #endif
 160
 161                         num_variables++;
 162                         if (num_variables == MAX_VARIABLES) break;
 163                 }
 164         }
 165
 166         fclose(stdin);
 167         open("/dev/null", O_RDWR);
 168
 169         if ((s=query_string) || (s=getenv("QUERY_STRING"))) {
 170                 char *saveptr;
 171                 for (tok=strtok_r(s, "&;", &saveptr); tok;
 172                      tok=strtok_r(NULL, "&;", &saveptr)) {
 173                         p = strchr_m(tok,'=');
 174                         if (!p) continue;
 175
 176                         *p = 0;
 177
 178                         variables[num_variables].name = SMB_STRDUP(tok);
 179                         variables[num_variables].value = SMB_STRDUP(p+1);
 180
 181                         if (!variables[num_variables].name ||
 182                             !variables[num_variables].value)
 183                                 continue;
 184
 185                         plus_to_space_unescape(variables[num_variables].value);
 186                         rfc1738_unescape(variables[num_variables].value);
 187                         plus_to_space_unescape(variables[num_variables].name);
 188                         rfc1738_unescape(variables[num_variables].name);
 189
 190 #ifdef DEBUG_COMMENTS
 191                         printf("<!== Commandline var %s has value \"%s\"  ==>\n",
 192                                variables[num_variables].name,
 193                                variables[num_variables].value);
 194 #endif
 195                         num_variables++;
 196                         if (num_variables == MAX_VARIABLES) break;
 197                 }
 198
 199         }
 200 #ifdef DEBUG_COMMENTS
 201         printf("<!== End dump in cgi_load_variables() ==>\n");
 202 #endif
 203
 204         /* variables from the client are in UTF-8 - convert them
 205            to our internal unix charset before use */
 206         for (i=0;i<num_variables;i++) {
 207                 TALLOC_CTX *frame = talloc_stackframe();
 208                 char *dest = NULL;
 209                 size_t dest_len;
 210
 211                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 212                                variables[i].name, strlen(variables[i].name),
 213                                &dest, &dest_len);
 214                 SAFE_FREE(variables[i].name);
 215                 variables[i].name = SMB_STRDUP(dest ? dest : "");
 216
 217                 dest = NULL;
 218                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 219                                variables[i].value, strlen(variables[i].value),
 220                                &dest, &dest_len);
 221                 SAFE_FREE(variables[i].value);
 222                 variables[i].value = SMB_STRDUP(dest ? dest : "");
 223                 TALLOC_FREE(frame);
 224         }
 225 }
 226
 227
 228 /***************************************************************************
 229   find a variable passed via CGI
 230   Doesn't quite do what you think in the case of POST text variables, because
 231   if they exist they might have a value of "" or even " ", depending on the
 232   browser. Also doesn't allow for variables[] containing multiple variables
 233   with the same name and the same or different values.
 234   ***************************************************************************/
 235
 236 const char *cgi_variable(const char *name)
 237 {
 238         int i;
 239
 240         for (i=0;i<num_variables;i++)
 241                 if (strcmp(variables[i].name, name) == 0)
 242                         return variables[i].value;
 243         return NULL;
 244 }
 245
 246 /***************************************************************************
 247  Version of the above that can't return a NULL pointer.
 248 ***************************************************************************/
 249
 250 const char *cgi_variable_nonull(const char *name)
 251 {
 252         const char *var = cgi_variable(name);
 253         if (var) {
 254                 return var;
 255         } else {
 256                 return "";
 257         }
 258 }
 259
 260 /***************************************************************************
 261 tell a browser about a fatal error in the http processing
 262   ***************************************************************************/
 263 static void cgi_setup_error(const char *err, const char *header, const char *info)
 264 {
 265         if (!got_request) {
 266                 /* damn browsers don't like getting cut off before they give a request */
 267                 char line[1024];
 268                 while (fgets(line, sizeof(line)-1, stdin)) {
 269                         if (strnequal(line,"GET ", 4) ||
 270                             strnequal(line,"POST ", 5) ||
 271                             strnequal(line,"PUT ", 4)) {
 272                                 break;
 273                         }
 274                 }
 275         }
 276
 277         d_printf("HTTP/1.0 %s\r\n%sConnection: close\r\nContent-Type: text/html\r\n\r\n<HTML><HEAD><TITLE>%s</TITLE></HEAD><BODY><H1>%s</H1>%s<p></BODY></HTML>\r\n\r\n", err, header, err, err, info);
 278         fclose(stdin);
 279         fclose(stdout);
 280         exit(0);
 281 }
 282
 283
 284 /***************************************************************************
 285 tell a browser about a fatal authentication error
 286   ***************************************************************************/
 287 static void cgi_auth_error(void)
 288 {
 289         if (inetd_server) {
 290                 cgi_setup_error("401 Authorization Required",
 291                                 "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 292                                 "You must be authenticated to use this service");
 293         } else {
 294                 printf("Content-Type: text/html\r\n");
 295
 296                 printf("\r\n<HTML><HEAD><TITLE>SWAT</TITLE></HEAD>\n");
 297                 printf("<BODY><H1>Installation Error</H1>\n");
 298                 printf("SWAT must be installed via inetd. It cannot be run as a CGI script<p>\n");
 299                 printf("</BODY></HTML>\r\n");
 300         }
 301         exit(0);
 302 }
 303
 304 /***************************************************************************
 305 authenticate when we are running as a CGI
 306   ***************************************************************************/
 307 static void cgi_web_auth(void)
 308 {
 309         const char *user = getenv("REMOTE_USER");
 310         struct passwd *pwd;
 311         const char *head = "Content-Type: text/html\r\n\r\n<HTML><BODY><H1>SWAT installation Error</H1>\n";
 312         const char *tail = "</BODY></HTML>\r\n";
 313
 314         if (!user) {
 315                 printf("%sREMOTE_USER not set. Not authenticated by web server.<br>%s\n",
 316                        head, tail);
 317                 exit(0);
 318         }
 319
 320         pwd = Get_Pwnam_alloc(talloc_tos(), user);
 321         if (!pwd) {
 322                 printf("%sCannot find user %s<br>%s\n", head, user, tail);
 323                 exit(0);
 324         }
 325
 326         setuid(0);
 327         setuid(pwd->pw_uid);
 328         if (geteuid() != pwd->pw_uid || getuid() != pwd->pw_uid) {
 329                 printf("%sFailed to become user %s - uid=%d/%d<br>%s\n",
 330                        head, user, (int)geteuid(), (int)getuid(), tail);
 331                 exit(0);
 332         }
 333         TALLOC_FREE(pwd);
 334 }
 335
 336
 337 /***************************************************************************
 338 handle a http authentication line
 339   ***************************************************************************/
 340 static bool cgi_handle_authorization(char *line)
 341 {
 342         char *p;
 343         fstring user, user_pass;
 344         struct passwd *pass = NULL;
 345         const char *rhost;
 346         char addr[INET6_ADDRSTRLEN];
 347
 348         if (!strnequal(line,"Basic ", 6)) {
 349                 goto err;
 350         }
 351         line += 6;
 352         while (line[0] == ' ') line++;
 353         base64_decode_inplace(line);
 354         if (!(p=strchr_m(line,':'))) {
 355                 /*
 356                  * Always give the same error so a cracker
 357                  * cannot tell why we fail.
 358                  */
 359                 goto err;
 360         }
 361         *p = 0;
 362
 363         convert_string(CH_UTF8, CH_UNIX,
 364                        line, -1,
 365                        user, sizeof(user));
 366
 367         convert_string(CH_UTF8, CH_UNIX,
 368                        p+1, -1,
 369                        user_pass, sizeof(user_pass));
 370
 371         /*
 372          * Try and get the user from the UNIX password file.
 373          */
 374
 375         pass = Get_Pwnam_alloc(talloc_tos(), user);
 376
 377         rhost = client_name(1);
 378         if (strequal(rhost,"UNKNOWN"))
 379                 rhost = client_addr(1, addr, sizeof(addr));
 380
 381         /*
 382          * Validate the password they have given.
 383          */
 384
 385         if NT_STATUS_IS_OK(pass_check(pass, user, rhost, user_pass, false)) {
 386                 if (pass) {
 387                         /*
 388                          * Password was ok.
 389                          */
 390
 391                         if ( initgroups(pass->pw_name, pass->pw_gid) != 0 )
 392                                 goto err;
 393
 394                         become_user_permanently(pass->pw_uid, pass->pw_gid);
 395
 396                         /* Save the users name */
 397                         C_user = SMB_STRDUP(user);
 398                         TALLOC_FREE(pass);
 399                         return True;
 400                 }
 401         }
 402
 403 err:
 404         cgi_setup_error("401 Bad Authorization",
 405                         "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 406                         "username or password incorrect");
 407
 408         TALLOC_FREE(pass);
 409         return False;
 410 }
 411
 412 /***************************************************************************
 413 is this root?
 414   ***************************************************************************/
 415 bool am_root(void)
 416 {
 417         if (geteuid() == 0) {
 418                 return( True);
 419         } else {
 420                 return( False);
 421         }
 422 }
 423
 424 /***************************************************************************
 425 return a ptr to the users name
 426   ***************************************************************************/
 427 char *cgi_user_name(void)
 428 {
 429         return(C_user);
 430 }
 431
 432
 433 /***************************************************************************
 434 handle a file download
 435   ***************************************************************************/
 436 static void cgi_download(char *file)
 437 {
 438         SMB_STRUCT_STAT st;
 439         char buf[1024];
 440         int fd, l, i;
 441         char *p;
 442         char *lang;
 443
 444         /* sanitise the filename */
 445         for (i=0;file[i];i++) {
 446                 if (!isalnum((int)file[i]) && !strchr_m("/.-_", file[i])) {
 447                         cgi_setup_error("404 File Not Found","",
 448                                         "Illegal character in filename");
 449                 }
 450         }
 451
 452         if (sys_stat(file, &st, false) != 0)    {
 453                 cgi_setup_error("404 File Not Found","",
 454                                 "The requested file was not found");
 455         }
 456
 457         if (S_ISDIR(st.st_ex_mode))
 458         {
 459                 snprintf(buf, sizeof(buf), "%s/index.html", file);
 460                 if (!file_exist_stat(buf, &st, false)
 461                     || !S_ISREG(st.st_ex_mode))
 462                 {
 463                         cgi_setup_error("404 File Not Found","",
 464                                         "The requested file was not found");
 465                 }
 466         }
 467         else if (S_ISREG(st.st_ex_mode))
 468         {
 469                 snprintf(buf, sizeof(buf), "%s", file);
 470         }
 471         else
 472         {
 473                 cgi_setup_error("404 File Not Found","",
 474                                 "The requested file was not found");
 475         }
 476
 477         fd = web_open(buf,O_RDONLY,0);
 478         if (fd == -1) {
 479                 cgi_setup_error("404 File Not Found","",
 480                                 "The requested file was not found");
 481         }
 482         printf("HTTP/1.0 200 OK\r\n");
 483         if ((p=strrchr_m(buf, '.'))) {
 484                 if (strcmp(p,".gif")==0) {
 485                         printf("Content-Type: image/gif\r\n");
 486                 } else if (strcmp(p,".jpg")==0) {
 487                         printf("Content-Type: image/jpeg\r\n");
 488                 } else if (strcmp(p,".png")==0) {
 489                         printf("Content-Type: image/png\r\n");
 490                 } else if (strcmp(p,".css")==0) {
 491                         printf("Content-Type: text/css\r\n");
 492                 } else if (strcmp(p,".txt")==0) {
 493                         printf("Content-Type: text/plain\r\n");
 494                 } else {
 495                         printf("Content-Type: text/html\r\n");
 496                 }
 497         }
 498         printf("Expires: %s\r\n",
 499                    http_timestring(talloc_tos(), time(NULL)+EXPIRY_TIME));
 500
 501         lang = lang_tdb_current();
 502         if (lang) {
 503                 printf("Content-Language: %s\r\n", lang);
 504         }
 505
 506         printf("Content-Length: %d\r\n\r\n", (int)st.st_ex_size);
 507         while ((l=read(fd,buf,sizeof(buf)))>0) {
 508                 if (fwrite(buf, 1, l, stdout) != l) {
 509                         break;
 510                 }
 511         }
 512         close(fd);
 513         exit(0);
 514 }
 515
 516
 517
 518 /* return true if the char* contains ip addrs only.  Used to avoid
 519 name lookup calls */
 520
 521 static bool only_ipaddrs_in_list(const char **list)
 522 {
 523         bool only_ip = true;
 524
 525         if (!list) {
 526                 return true;
 527         }
 528
 529         for (; *list ; list++) {
 530                 /* factor out the special strings */
 531                 if (strequal(*list, "ALL") || strequal(*list, "FAIL") ||
 532                     strequal(*list, "EXCEPT")) {
 533                         continue;
 534                 }
 535
 536                 if (!is_ipaddress(*list)) {
 537                         /*
 538                          * If we failed, make sure that it was not because
 539                          * the token was a network/netmask pair. Only
 540                          * network/netmask pairs have a '/' in them.
 541                          */
 542                         if ((strchr_m(*list, '/')) == NULL) {
 543                                 only_ip = false;
 544                                 DEBUG(3,("only_ipaddrs_in_list: list has "
 545                                         "non-ip address (%s)\n",
 546                                         *list));
 547                                 break;
 548                         }
 549                 }
 550         }
 551
 552         return only_ip;
 553 }
 554
 555 /* return true if access should be allowed to a service for a socket */
 556 static bool check_access(int sock, const char **allow_list,
 557                          const char **deny_list)
 558 {
 559         bool ret = false;
 560         bool only_ip = false;
 561         char addr[INET6_ADDRSTRLEN];
 562
 563         if ((!deny_list || *deny_list==0) && (!allow_list || *allow_list==0)) {
 564                 return true;
 565         }
 566
 567         /* Bypass name resolution calls if the lists
 568          * only contain IP addrs */
 569         if (only_ipaddrs_in_list(allow_list) &&
 570             only_ipaddrs_in_list(deny_list)) {
 571                 only_ip = true;
 572                 DEBUG (3, ("check_access: no hostnames "
 573                            "in host allow/deny list.\n"));
 574                 ret = allow_access(deny_list,
 575                                    allow_list,
 576                                    "",
 577                                    get_peer_addr(sock,addr,sizeof(addr)));
 578         } else {
 579                 DEBUG (3, ("check_access: hostnames in "
 580                            "host allow/deny list.\n"));
 581                 ret = allow_access(deny_list,
 582                                    allow_list,
 583                                    get_peer_name(sock,true),
 584                                    get_peer_addr(sock,addr,sizeof(addr)));
 585         }
 586
 587         if (ret) {
 588                 DEBUG(2,("Allowed connection from %s (%s)\n",
 589                          only_ip ? "" : get_peer_name(sock,true),
 590                          get_peer_addr(sock,addr,sizeof(addr))));
 591         } else {
 592                 DEBUG(0,("Denied connection from %s (%s)\n",
 593                          only_ip ? "" : get_peer_name(sock,true),
 594                          get_peer_addr(sock,addr,sizeof(addr))));
 595         }
 596
 597         return(ret);
 598 }
 599
 600 /**
 601  * @brief Setup the CGI framework.
 602  *
 603  * Setup the cgi framework, handling the possibility that this program
 604  * is either run as a true CGI program with a gateway to a web server, or
 605  * is itself a mini web server.
 606  **/
 607 void cgi_setup(const char *rootdir, int auth_required)
 608 {
 609         bool authenticated = False;
 610         char line[1024];
 611         char *url=NULL;
 612         char *p;
 613         char *lang;
 614
 615         if (chdir(rootdir)) {
 616                 cgi_setup_error("500 Server Error", "",
 617                                 "chdir failed - the server is not configured correctly");
 618         }
 619
 620         /* Handle the possibility we might be running as non-root */
 621         sec_init();
 622
 623         if ((lang=getenv("HTTP_ACCEPT_LANGUAGE"))) {
 624                 /* if running as a cgi program */
 625                 web_set_lang(lang);
 626         }
 627
 628         /* maybe we are running under a web server */
 629         if (getenv("CONTENT_LENGTH") || getenv("REQUEST_METHOD")) {
 630                 if (auth_required) {
 631                         cgi_web_auth();
 632                 }
 633                 return;
 634         }
 635
 636         inetd_server = True;
 637
 638         if (!check_access(1, lp_hostsallow(-1), lp_hostsdeny(-1))) {
 639                 cgi_setup_error("403 Forbidden", "",
 640                                 "Samba is configured to deny access from this client\n<br>Check your \"hosts allow\" and \"hosts deny\" options in smb.conf ");
 641         }
 642
 643         /* we are a mini-web server. We need to read the request from stdin
 644            and handle authentication etc */
 645         while (fgets(line, sizeof(line)-1, stdin)) {
 646                 if (line[0] == '\r' || line[0] == '\n') break;
 647                 if (strnequal(line,"GET ", 4)) {
 648                         got_request = True;
 649                         url = SMB_STRDUP(&line[4]);
 650                 } else if (strnequal(line,"POST ", 5)) {
 651                         got_request = True;
 652                         request_post = 1;
 653                         url = SMB_STRDUP(&line[5]);
 654                 } else if (strnequal(line,"PUT ", 4)) {
 655                         got_request = True;
 656                         cgi_setup_error("400 Bad Request", "",
 657                                         "This server does not accept PUT requests");
 658                 } else if (strnequal(line,"Authorization: ", 15)) {
 659                         authenticated = cgi_handle_authorization(&line[15]);
 660                 } else if (strnequal(line,"Content-Length: ", 16)) {
 661                         content_length = atoi(&line[16]);
 662                 } else if (strnequal(line,"Accept-Language: ", 17)) {
 663                         web_set_lang(&line[17]);
 664                 }
 665                 /* ignore all other requests! */
 666         }
 667
 668         if (auth_required && !authenticated) {
 669                 cgi_auth_error();
 670         }
 671
 672         if (!url) {
 673                 cgi_setup_error("400 Bad Request", "",
 674                                 "You must specify a GET or POST request");
 675         }
 676
 677         /* trim the URL */
 678         if ((p = strchr_m(url,' ')) || (p=strchr_m(url,'\t'))) {
 679                 *p = 0;
 680         }
 681         while (*url && strchr_m("\r\n",url[strlen(url)-1])) {
 682                 url[strlen(url)-1] = 0;
 683         }
 684
 685         /* anything following a ? in the URL is part of the query string */
 686         if ((p=strchr_m(url,'?'))) {
 687                 query_string = p+1;
 688                 *p = 0;
 689         }
 690
 691         string_sub(url, "/swat/", "", 0);
 692
 693         if (url[0] != '/' && strstr(url,"..")==0) {
 694                 cgi_download(url);
 695         }
 696
 697         printf("HTTP/1.0 200 OK\r\nConnection: close\r\n");
 698         printf("Date: %s\r\n", http_timestring(talloc_tos(), time(NULL)));
 699         baseurl = "";
 700         pathinfo = url+1;
 701 }
 702
 703
 704 /***************************************************************************
 705 return the current pages URL
 706   ***************************************************************************/
 707 const char *cgi_baseurl(void)
 708 {
 709         if (inetd_server) {
 710                 return baseurl;
 711         }
 712         return getenv("SCRIPT_NAME");
 713 }
 714
 715 /***************************************************************************
 716 return the current pages path info
 717   ***************************************************************************/
 718 const char *cgi_pathinfo(void)
 719 {
 720         char *r;
 721         if (inetd_server) {
 722                 return pathinfo;
 723         }
 724         r = getenv("PATH_INFO");
 725         if (!r) return "";
 726         if (*r == '/') r++;
 727         return r;
 728 }
 729
 730 /***************************************************************************
 731 return the hostname of the client
 732   ***************************************************************************/
 733 const char *cgi_remote_host(void)
 734 {
 735         if (inetd_server) {
 736                 return get_peer_name(1,False);
 737         }
 738         return getenv("REMOTE_HOST");
 739 }
 740
 741 /***************************************************************************
 742 return the hostname of the client
 743   ***************************************************************************/
 744 const char *cgi_remote_addr(void)
 745 {
 746         if (inetd_server) {
 747                 char addr[INET6_ADDRSTRLEN];
 748                 get_peer_addr(1,addr,sizeof(addr));
 749                 return talloc_strdup(talloc_tos(), addr);
 750         }
 751         return getenv("REMOTE_ADDR");
 752 }
 753
 754
 755 /***************************************************************************
 756 return True if the request was a POST
 757   ***************************************************************************/
 758 bool cgi_waspost(void)
 759 {
 760         if (inetd_server) {
 761                 return request_post;
 762         }
 763         return strequal(getenv("REQUEST_METHOD"), "POST");
 764 }