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