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 #include "auth.h"
  26
  27 #define MAX_VARIABLES 10000
  28
  29 /* set the expiry on fixed pages */
  30 #define EXPIRY_TIME (60*60*24*7)
  31
  32 #ifdef DEBUG_COMMENTS
  33 extern void print_title(char *fmt, ...);
  34 #endif
  35
  36 struct cgi_var {
  37         char *name;
  38         char *value;
  39 };
  40
  41 static struct cgi_var variables[MAX_VARIABLES];
  42 static int num_variables;
  43 static int content_length;
  44 static int request_post;
  45 static char *query_string;
  46 static const char *baseurl;
  47 static char *pathinfo;
  48 static char *C_user;
  49 static bool inetd_server;
  50 static bool got_request;
  51
  52 static char *grab_line(FILE *f, int *cl)
  53 {
  54         char *ret = NULL;
  55         int i = 0;
  56         int len = 0;
  57
  58         while ((*cl)) {
  59                 int c;
  60
  61                 if (i == len) {
  62                         char *ret2;
  63                         if (len == 0) len = 1024;
  64                         else len *= 2;
  65                         ret2 = (char *)SMB_REALLOC_KEEP_OLD_ON_ERROR(ret, len);
  66                         if (!ret2) return ret;
  67                         ret = ret2;
  68                 }
  69
  70                 c = fgetc(f);
  71                 (*cl)--;
  72
  73                 if (c == EOF) {
  74                         (*cl) = 0;
  75                         break;
  76                 }
  77
  78                 if (c == '\r') continue;
  79
  80                 if (strchr_m("\n&", c)) break;
  81
  82                 ret[i++] = c;
  83
  84         }
  85
  86         if (ret) {
  87                 ret[i] = 0;
  88         }
  89         return ret;
  90 }
  91
  92 /**
  93  URL encoded strings can have a '+', which should be replaced with a space
  94
  95  (This was in rfc1738_unescape(), but that broke the squid helper)
  96 **/
  97
  98 static void plus_to_space_unescape(char *buf)
  99 {
 100         char *p=buf;
 101
 102         while ((p=strchr_m(p,'+')))
 103                 *p = ' ';
 104 }
 105
 106 /***************************************************************************
 107   load all the variables passed to the CGI program. May have multiple variables
 108   with the same name and the same or different values. Takes a file parameter
 109   for simulating CGI invocation eg loading saved preferences.
 110   ***************************************************************************/
 111 void cgi_load_variables(void)
 112 {
 113         static char *line;
 114         char *p, *s, *tok;
 115         int len, i;
 116         FILE *f = stdin;
 117
 118 #ifdef DEBUG_COMMENTS
 119         char dummy[100]="";
 120         print_title(dummy);
 121         d_printf("<!== Start dump in cgi_load_variables() %s ==>\n",__FILE__);
 122 #endif
 123
 124         if (!content_length) {
 125                 p = getenv("CONTENT_LENGTH");
 126                 len = p?atoi(p):0;
 127         } else {
 128                 len = content_length;
 129         }
 130
 131
 132         if (len > 0 &&
 133             (request_post ||
 134              ((s=getenv("REQUEST_METHOD")) &&
 135               strequal(s,"POST")))) {
 136                 while (len && (line=grab_line(f, &len))) {
 137                         p = strchr_m(line,'=');
 138                         if (!p) continue;
 139
 140                         *p = 0;
 141
 142                         variables[num_variables].name = SMB_STRDUP(line);
 143                         variables[num_variables].value = SMB_STRDUP(p+1);
 144
 145                         SAFE_FREE(line);
 146
 147                         if (!variables[num_variables].name ||
 148                             !variables[num_variables].value)
 149                                 continue;
 150
 151                         plus_to_space_unescape(variables[num_variables].value);
 152                         rfc1738_unescape(variables[num_variables].value);
 153                         plus_to_space_unescape(variables[num_variables].name);
 154                         rfc1738_unescape(variables[num_variables].name);
 155
 156 #ifdef DEBUG_COMMENTS
 157                         printf("<!== POST var %s has value \"%s\"  ==>\n",
 158                                variables[num_variables].name,
 159                                variables[num_variables].value);
 160 #endif
 161
 162                         num_variables++;
 163                         if (num_variables == MAX_VARIABLES) break;
 164                 }
 165         }
 166
 167         fclose(stdin);
 168         open("/dev/null", O_RDWR);
 169
 170         if ((s=query_string) || (s=getenv("QUERY_STRING"))) {
 171                 char *saveptr;
 172                 for (tok=strtok_r(s, "&;", &saveptr); tok;
 173                      tok=strtok_r(NULL, "&;", &saveptr)) {
 174                         p = strchr_m(tok,'=');
 175                         if (!p) continue;
 176
 177                         *p = 0;
 178
 179                         variables[num_variables].name = SMB_STRDUP(tok);
 180                         variables[num_variables].value = SMB_STRDUP(p+1);
 181
 182                         if (!variables[num_variables].name ||
 183                             !variables[num_variables].value)
 184                                 continue;
 185
 186                         plus_to_space_unescape(variables[num_variables].value);
 187                         rfc1738_unescape(variables[num_variables].value);
 188                         plus_to_space_unescape(variables[num_variables].name);
 189                         rfc1738_unescape(variables[num_variables].name);
 190
 191 #ifdef DEBUG_COMMENTS
 192                         printf("<!== Commandline var %s has value \"%s\"  ==>\n",
 193                                variables[num_variables].name,
 194                                variables[num_variables].value);
 195 #endif
 196                         num_variables++;
 197                         if (num_variables == MAX_VARIABLES) break;
 198                 }
 199
 200         }
 201 #ifdef DEBUG_COMMENTS
 202         printf("<!== End dump in cgi_load_variables() ==>\n");
 203 #endif
 204
 205         /* variables from the client are in UTF-8 - convert them
 206            to our internal unix charset before use */
 207         for (i=0;i<num_variables;i++) {
 208                 TALLOC_CTX *frame = talloc_stackframe();
 209                 char *dest = NULL;
 210                 size_t dest_len;
 211
 212                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 213                                variables[i].name, strlen(variables[i].name),
 214                                &dest, &dest_len);
 215                 SAFE_FREE(variables[i].name);
 216                 variables[i].name = SMB_STRDUP(dest ? dest : "");
 217
 218                 dest = NULL;
 219                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 220                                variables[i].value, strlen(variables[i].value),
 221                                &dest, &dest_len);
 222                 SAFE_FREE(variables[i].value);
 223                 variables[i].value = SMB_STRDUP(dest ? dest : "");
 224                 TALLOC_FREE(frame);
 225         }
 226 }
 227
 228
 229 /***************************************************************************
 230   find a variable passed via CGI
 231   Doesn't quite do what you think in the case of POST text variables, because
 232   if they exist they might have a value of "" or even " ", depending on the
 233   browser. Also doesn't allow for variables[] containing multiple variables
 234   with the same name and the same or different values.
 235   ***************************************************************************/
 236
 237 const char *cgi_variable(const char *name)
 238 {
 239         int i;
 240
 241         for (i=0;i<num_variables;i++)
 242                 if (strcmp(variables[i].name, name) == 0)
 243                         return variables[i].value;
 244         return NULL;
 245 }
 246
 247 /***************************************************************************
 248  Version of the above that can't return a NULL pointer.
 249 ***************************************************************************/
 250
 251 const char *cgi_variable_nonull(const char *name)
 252 {
 253         const char *var = cgi_variable(name);
 254         if (var) {
 255                 return var;
 256         } else {
 257                 return "";
 258         }
 259 }
 260
 261 /***************************************************************************
 262 tell a browser about a fatal error in the http processing
 263   ***************************************************************************/
 264 static void cgi_setup_error(const char *err, const char *header, const char *info)
 265 {
 266         if (!got_request) {
 267                 /* damn browsers don't like getting cut off before they give a request */
 268                 char line[1024];
 269                 while (fgets(line, sizeof(line)-1, stdin)) {
 270                         if (strnequal(line,"GET ", 4) ||
 271                             strnequal(line,"POST ", 5) ||
 272                             strnequal(line,"PUT ", 4)) {
 273                                 break;
 274                         }
 275                 }
 276         }
 277
 278         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);
 279         fclose(stdin);
 280         fclose(stdout);
 281         exit(0);
 282 }
 283
 284
 285 /***************************************************************************
 286 tell a browser about a fatal authentication error
 287   ***************************************************************************/
 288 static void cgi_auth_error(void)
 289 {
 290         if (inetd_server) {
 291                 cgi_setup_error("401 Authorization Required",
 292                                 "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 293                                 "You must be authenticated to use this service");
 294         } else {
 295                 printf("Content-Type: text/html\r\n");
 296
 297                 printf("\r\n<HTML><HEAD><TITLE>SWAT</TITLE></HEAD>\n");
 298                 printf("<BODY><H1>Installation Error</H1>\n");
 299                 printf("SWAT must be installed via inetd. It cannot be run as a CGI script<p>\n");
 300                 printf("</BODY></HTML>\r\n");
 301         }
 302         exit(0);
 303 }
 304
 305 /***************************************************************************
 306 authenticate when we are running as a CGI
 307   ***************************************************************************/
 308 static void cgi_web_auth(void)
 309 {
 310         const char *user = getenv("REMOTE_USER");
 311         struct passwd *pwd;
 312         const char *head = "Content-Type: text/html\r\n\r\n<HTML><BODY><H1>SWAT installation Error</H1>\n";
 313         const char *tail = "</BODY></HTML>\r\n";
 314
 315         if (!user) {
 316                 printf("%sREMOTE_USER not set. Not authenticated by web server.<br>%s\n",
 317                        head, tail);
 318                 exit(0);
 319         }
 320
 321         pwd = Get_Pwnam_alloc(talloc_tos(), user);
 322         if (!pwd) {
 323                 printf("%sCannot find user %s<br>%s\n", head, user, tail);
 324                 exit(0);
 325         }
 326
 327         setuid(0);
 328         setuid(pwd->pw_uid);
 329         if (geteuid() != pwd->pw_uid || getuid() != pwd->pw_uid) {
 330                 printf("%sFailed to become user %s - uid=%d/%d<br>%s\n",
 331                        head, user, (int)geteuid(), (int)getuid(), tail);
 332                 exit(0);
 333         }
 334         TALLOC_FREE(pwd);
 335 }
 336
 337
 338 /***************************************************************************
 339 handle a http authentication line
 340   ***************************************************************************/
 341 static bool cgi_handle_authorization(char *line)
 342 {
 343         char *p;
 344         fstring user, user_pass;
 345         struct passwd *pass = NULL;
 346         const char *rhost;
 347         char addr[INET6_ADDRSTRLEN];
 348
 349         if (!strnequal(line,"Basic ", 6)) {
 350                 goto err;
 351         }
 352         line += 6;
 353         while (line[0] == ' ') line++;
 354         base64_decode_inplace(line);
 355         if (!(p=strchr_m(line,':'))) {
 356                 /*
 357                  * Always give the same error so a cracker
 358                  * cannot tell why we fail.
 359                  */
 360                 goto err;
 361         }
 362         *p = 0;
 363
 364         convert_string(CH_UTF8, CH_UNIX,
 365                        line, -1,
 366                        user, sizeof(user));
 367
 368         convert_string(CH_UTF8, CH_UNIX,
 369                        p+1, -1,
 370                        user_pass, sizeof(user_pass));
 371
 372         /*
 373          * Try and get the user from the UNIX password file.
 374          */
 375
 376         pass = Get_Pwnam_alloc(talloc_tos(), user);
 377
 378         rhost = client_name(1);
 379         if (strequal(rhost,"UNKNOWN"))
 380                 rhost = client_addr(1, addr, sizeof(addr));
 381
 382         /*
 383          * Validate the password they have given.
 384          */
 385
 386         if NT_STATUS_IS_OK(pass_check(pass, user, rhost, user_pass, false)) {
 387                 if (pass) {
 388                         /*
 389                          * Password was ok.
 390                          */
 391
 392                         if ( initgroups(pass->pw_name, pass->pw_gid) != 0 )
 393                                 goto err;
 394
 395                         become_user_permanently(pass->pw_uid, pass->pw_gid);
 396
 397                         /* Save the users name */
 398                         C_user = SMB_STRDUP(user);
 399                         TALLOC_FREE(pass);
 400                         return True;
 401                 }
 402         }
 403
 404 err:
 405         cgi_setup_error("401 Bad Authorization",
 406                         "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 407                         "username or password incorrect");
 408
 409         TALLOC_FREE(pass);
 410         return False;
 411 }
 412
 413 /***************************************************************************
 414 is this root?
 415   ***************************************************************************/
 416 bool am_root(void)
 417 {
 418         if (geteuid() == 0) {
 419                 return( True);
 420         } else {
 421                 return( False);
 422         }
 423 }
 424
 425 /***************************************************************************
 426 return a ptr to the users name
 427   ***************************************************************************/
 428 char *cgi_user_name(void)
 429 {
 430         return(C_user);
 431 }
 432
 433
 434 /***************************************************************************
 435 handle a file download
 436   ***************************************************************************/
 437 static void cgi_download(char *file)
 438 {
 439         SMB_STRUCT_STAT st;
 440         char buf[1024];
 441         int fd, l, i;
 442         char *p;
 443         char *lang;
 444
 445         /* sanitise the filename */
 446         for (i=0;file[i];i++) {
 447                 if (!isalnum((int)file[i]) && !strchr_m("/.-_", file[i])) {
 448                         cgi_setup_error("404 File Not Found","",
 449                                         "Illegal character in filename");
 450                 }
 451         }
 452
 453         if (sys_stat(file, &st, false) != 0)    {
 454                 cgi_setup_error("404 File Not Found","",
 455                                 "The requested file was not found");
 456         }
 457
 458         if (S_ISDIR(st.st_ex_mode))
 459         {
 460                 snprintf(buf, sizeof(buf), "%s/index.html", file);
 461                 if (!file_exist_stat(buf, &st, false)
 462                     || !S_ISREG(st.st_ex_mode))
 463                 {
 464                         cgi_setup_error("404 File Not Found","",
 465                                         "The requested file was not found");
 466                 }
 467         }
 468         else if (S_ISREG(st.st_ex_mode))
 469         {
 470                 snprintf(buf, sizeof(buf), "%s", file);
 471         }
 472         else
 473         {
 474                 cgi_setup_error("404 File Not Found","",
 475                                 "The requested file was not found");
 476         }
 477
 478         fd = web_open(buf,O_RDONLY,0);
 479         if (fd == -1) {
 480                 cgi_setup_error("404 File Not Found","",
 481                                 "The requested file was not found");
 482         }
 483         printf("HTTP/1.0 200 OK\r\n");
 484         if ((p=strrchr_m(buf, '.'))) {
 485                 if (strcmp(p,".gif")==0) {
 486                         printf("Content-Type: image/gif\r\n");
 487                 } else if (strcmp(p,".jpg")==0) {
 488                         printf("Content-Type: image/jpeg\r\n");
 489                 } else if (strcmp(p,".png")==0) {
 490                         printf("Content-Type: image/png\r\n");
 491                 } else if (strcmp(p,".css")==0) {
 492                         printf("Content-Type: text/css\r\n");
 493                 } else if (strcmp(p,".txt")==0) {
 494                         printf("Content-Type: text/plain\r\n");
 495                 } else {
 496                         printf("Content-Type: text/html\r\n");
 497                 }
 498         }
 499         printf("Expires: %s\r\n",
 500                    http_timestring(talloc_tos(), time(NULL)+EXPIRY_TIME));
 501
 502         lang = lang_tdb_current();
 503         if (lang) {
 504                 printf("Content-Language: %s\r\n", lang);
 505         }
 506
 507         printf("Content-Length: %d\r\n\r\n", (int)st.st_ex_size);
 508         while ((l=read(fd,buf,sizeof(buf)))>0) {
 509                 if (fwrite(buf, 1, l, stdout) != l) {
 510                         break;
 511                 }
 512         }
 513         close(fd);
 514         exit(0);
 515 }
 516
 517
 518
 519 /* return true if the char* contains ip addrs only.  Used to avoid
 520 name lookup calls */
 521
 522 static bool only_ipaddrs_in_list(const char **list)
 523 {
 524         bool only_ip = true;
 525
 526         if (!list) {
 527                 return true;
 528         }
 529
 530         for (; *list ; list++) {
 531                 /* factor out the special strings */
 532                 if (strequal(*list, "ALL") || strequal(*list, "FAIL") ||
 533                     strequal(*list, "EXCEPT")) {
 534                         continue;
 535                 }
 536
 537                 if (!is_ipaddress(*list)) {
 538                         /*
 539                          * If we failed, make sure that it was not because
 540                          * the token was a network/netmask pair. Only
 541                          * network/netmask pairs have a '/' in them.
 542                          */
 543                         if ((strchr_m(*list, '/')) == NULL) {
 544                                 only_ip = false;
 545                                 DEBUG(3,("only_ipaddrs_in_list: list has "
 546                                         "non-ip address (%s)\n",
 547                                         *list));
 548                                 break;
 549                         }
 550                 }
 551         }
 552
 553         return only_ip;
 554 }
 555
 556 /* return true if access should be allowed to a service for a socket */
 557 static bool check_access(int sock, const char **allow_list,
 558                          const char **deny_list)
 559 {
 560         bool ret = false;
 561         bool only_ip = false;
 562         char addr[INET6_ADDRSTRLEN];
 563
 564         if ((!deny_list || *deny_list==0) && (!allow_list || *allow_list==0)) {
 565                 return true;
 566         }
 567
 568         /* Bypass name resolution calls if the lists
 569          * only contain IP addrs */
 570         if (only_ipaddrs_in_list(allow_list) &&
 571             only_ipaddrs_in_list(deny_list)) {
 572                 only_ip = true;
 573                 DEBUG (3, ("check_access: no hostnames "
 574                            "in host allow/deny list.\n"));
 575                 ret = allow_access(deny_list,
 576                                    allow_list,
 577                                    "",
 578                                    get_peer_addr(sock,addr,sizeof(addr)));
 579         } else {
 580                 DEBUG (3, ("check_access: hostnames in "
 581                            "host allow/deny list.\n"));
 582                 ret = allow_access(deny_list,
 583                                    allow_list,
 584                                    get_peer_name(sock,true),
 585                                    get_peer_addr(sock,addr,sizeof(addr)));
 586         }
 587
 588         if (ret) {
 589                 DEBUG(2,("Allowed connection from %s (%s)\n",
 590                          only_ip ? "" : get_peer_name(sock,true),
 591                          get_peer_addr(sock,addr,sizeof(addr))));
 592         } else {
 593                 DEBUG(0,("Denied connection from %s (%s)\n",
 594                          only_ip ? "" : get_peer_name(sock,true),
 595                          get_peer_addr(sock,addr,sizeof(addr))));
 596         }
 597
 598         return(ret);
 599 }
 600
 601 /**
 602  * @brief Setup the CGI framework.
 603  *
 604  * Setup the cgi framework, handling the possibility that this program
 605  * is either run as a true CGI program with a gateway to a web server, or
 606  * is itself a mini web server.
 607  **/
 608 void cgi_setup(const char *rootdir, int auth_required)
 609 {
 610         bool authenticated = False;
 611         char line[1024];
 612         char *url=NULL;
 613         char *p;
 614         char *lang;
 615
 616         if (chdir(rootdir)) {
 617                 cgi_setup_error("500 Server Error", "",
 618                                 "chdir failed - the server is not configured correctly");
 619         }
 620
 621         /* Handle the possibility we might be running as non-root */
 622         sec_init();
 623
 624         if ((lang=getenv("HTTP_ACCEPT_LANGUAGE"))) {
 625                 /* if running as a cgi program */
 626                 web_set_lang(lang);
 627         }
 628
 629         /* maybe we are running under a web server */
 630         if (getenv("CONTENT_LENGTH") || getenv("REQUEST_METHOD")) {
 631                 if (auth_required) {
 632                         cgi_web_auth();
 633                 }
 634                 return;
 635         }
 636
 637         inetd_server = True;
 638
 639         if (!check_access(1, lp_hostsallow(-1), lp_hostsdeny(-1))) {
 640                 cgi_setup_error("403 Forbidden", "",
 641                                 "Samba is configured to deny access from this client\n<br>Check your \"hosts allow\" and \"hosts deny\" options in smb.conf ");
 642         }
 643
 644         /* we are a mini-web server. We need to read the request from stdin
 645            and handle authentication etc */
 646         while (fgets(line, sizeof(line)-1, stdin)) {
 647                 if (line[0] == '\r' || line[0] == '\n') break;
 648                 if (strnequal(line,"GET ", 4)) {
 649                         got_request = True;
 650                         url = SMB_STRDUP(&line[4]);
 651                 } else if (strnequal(line,"POST ", 5)) {
 652                         got_request = True;
 653                         request_post = 1;
 654                         url = SMB_STRDUP(&line[5]);
 655                 } else if (strnequal(line,"PUT ", 4)) {
 656                         got_request = True;
 657                         cgi_setup_error("400 Bad Request", "",
 658                                         "This server does not accept PUT requests");
 659                 } else if (strnequal(line,"Authorization: ", 15)) {
 660                         authenticated = cgi_handle_authorization(&line[15]);
 661                 } else if (strnequal(line,"Content-Length: ", 16)) {
 662                         content_length = atoi(&line[16]);
 663                 } else if (strnequal(line,"Accept-Language: ", 17)) {
 664                         web_set_lang(&line[17]);
 665                 }
 666                 /* ignore all other requests! */
 667         }
 668
 669         if (auth_required && !authenticated) {
 670                 cgi_auth_error();
 671         }
 672
 673         if (!url) {
 674                 cgi_setup_error("400 Bad Request", "",
 675                                 "You must specify a GET or POST request");
 676         }
 677
 678         /* trim the URL */
 679         if ((p = strchr_m(url,' ')) || (p=strchr_m(url,'\t'))) {
 680                 *p = 0;
 681         }
 682         while (*url && strchr_m("\r\n",url[strlen(url)-1])) {
 683                 url[strlen(url)-1] = 0;
 684         }
 685
 686         /* anything following a ? in the URL is part of the query string */
 687         if ((p=strchr_m(url,'?'))) {
 688                 query_string = p+1;
 689                 *p = 0;
 690         }
 691
 692         string_sub(url, "/swat/", "", 0);
 693
 694         if (url[0] != '/' && strstr(url,"..")==0) {
 695                 cgi_download(url);
 696         }
 697
 698         printf("HTTP/1.0 200 OK\r\nConnection: close\r\n");
 699         printf("Date: %s\r\n", http_timestring(talloc_tos(), time(NULL)));
 700         baseurl = "";
 701         pathinfo = url+1;
 702 }
 703
 704
 705 /***************************************************************************
 706 return the current pages URL
 707   ***************************************************************************/
 708 const char *cgi_baseurl(void)
 709 {
 710         if (inetd_server) {
 711                 return baseurl;
 712         }
 713         return getenv("SCRIPT_NAME");
 714 }
 715
 716 /***************************************************************************
 717 return the current pages path info
 718   ***************************************************************************/
 719 const char *cgi_pathinfo(void)
 720 {
 721         char *r;
 722         if (inetd_server) {
 723                 return pathinfo;
 724         }
 725         r = getenv("PATH_INFO");
 726         if (!r) return "";
 727         if (*r == '/') r++;
 728         return r;
 729 }
 730
 731 /***************************************************************************
 732 return the hostname of the client
 733   ***************************************************************************/
 734 const char *cgi_remote_host(void)
 735 {
 736         if (inetd_server) {
 737                 return get_peer_name(1,False);
 738         }
 739         return getenv("REMOTE_HOST");
 740 }
 741
 742 /***************************************************************************
 743 return the hostname of the client
 744   ***************************************************************************/
 745 const char *cgi_remote_addr(void)
 746 {
 747         if (inetd_server) {
 748                 char addr[INET6_ADDRSTRLEN];
 749                 get_peer_addr(1,addr,sizeof(addr));
 750                 return talloc_strdup(talloc_tos(), addr);
 751         }
 752         return getenv("REMOTE_ADDR");
 753 }
 754
 755
 756 /***************************************************************************
 757 return True if the request was a POST
 758   ***************************************************************************/
 759 bool cgi_waspost(void)
 760 {
 761         if (inetd_server) {
 762                 return request_post;
 763         }
 764         return strequal(getenv("REQUEST_METHOD"), "POST");
 765 }