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 char *C_pass;
  50 static bool inetd_server;
  51 static bool got_request;
  52
  53 static char *grab_line(FILE *f, int *cl)
  54 {
  55         char *ret = NULL;
  56         int i = 0;
  57         int len = 0;
  58
  59         while ((*cl)) {
  60                 int c;
  61
  62                 if (i == len) {
  63                         char *ret2;
  64                         if (len == 0) len = 1024;
  65                         else len *= 2;
  66                         ret2 = (char *)SMB_REALLOC_KEEP_OLD_ON_ERROR(ret, len);
  67                         if (!ret2) return ret;
  68                         ret = ret2;
  69                 }
  70
  71                 c = fgetc(f);
  72                 (*cl)--;
  73
  74                 if (c == EOF) {
  75                         (*cl) = 0;
  76                         break;
  77                 }
  78
  79                 if (c == '\r') continue;
  80
  81                 if (strchr_m("\n&", c)) break;
  82
  83                 ret[i++] = c;
  84
  85         }
  86
  87         if (ret) {
  88                 ret[i] = 0;
  89         }
  90         return ret;
  91 }
  92
  93 /**
  94  URL encoded strings can have a '+', which should be replaced with a space
  95
  96  (This was in rfc1738_unescape(), but that broke the squid helper)
  97 **/
  98
  99 static void plus_to_space_unescape(char *buf)
 100 {
 101         char *p=buf;
 102
 103         while ((p=strchr_m(p,'+')))
 104                 *p = ' ';
 105 }
 106
 107 /***************************************************************************
 108   load all the variables passed to the CGI program. May have multiple variables
 109   with the same name and the same or different values. Takes a file parameter
 110   for simulating CGI invocation eg loading saved preferences.
 111   ***************************************************************************/
 112 void cgi_load_variables(void)
 113 {
 114         static char *line;
 115         char *p, *s, *tok;
 116         int len, i;
 117         FILE *f = stdin;
 118
 119 #ifdef DEBUG_COMMENTS
 120         char dummy[100]="";
 121         print_title(dummy);
 122         printf("<!== Start dump in cgi_load_variables() %s ==>\n",__FILE__);
 123 #endif
 124
 125         if (!content_length) {
 126                 p = getenv("CONTENT_LENGTH");
 127                 len = p?atoi(p):0;
 128         } else {
 129                 len = content_length;
 130         }
 131
 132
 133         if (len > 0 &&
 134             (request_post ||
 135              ((s=getenv("REQUEST_METHOD")) &&
 136               strequal(s,"POST")))) {
 137                 while (len && (line=grab_line(f, &len))) {
 138                         p = strchr_m(line,'=');
 139                         if (!p) continue;
 140
 141                         *p = 0;
 142
 143                         variables[num_variables].name = SMB_STRDUP(line);
 144                         variables[num_variables].value = SMB_STRDUP(p+1);
 145
 146                         SAFE_FREE(line);
 147
 148                         if (!variables[num_variables].name ||
 149                             !variables[num_variables].value)
 150                                 continue;
 151
 152                         plus_to_space_unescape(variables[num_variables].value);
 153                         rfc1738_unescape(variables[num_variables].value);
 154                         plus_to_space_unescape(variables[num_variables].name);
 155                         rfc1738_unescape(variables[num_variables].name);
 156
 157 #ifdef DEBUG_COMMENTS
 158                         printf("<!== POST var %s has value \"%s\"  ==>\n",
 159                                variables[num_variables].name,
 160                                variables[num_variables].value);
 161 #endif
 162
 163                         num_variables++;
 164                         if (num_variables == MAX_VARIABLES) break;
 165                 }
 166         }
 167
 168         fclose(stdin);
 169         open("/dev/null", O_RDWR);
 170
 171         if ((s=query_string) || (s=getenv("QUERY_STRING"))) {
 172                 char *saveptr;
 173                 for (tok=strtok_r(s, "&;", &saveptr); tok;
 174                      tok=strtok_r(NULL, "&;", &saveptr)) {
 175                         p = strchr_m(tok,'=');
 176                         if (!p) continue;
 177
 178                         *p = 0;
 179
 180                         variables[num_variables].name = SMB_STRDUP(tok);
 181                         variables[num_variables].value = SMB_STRDUP(p+1);
 182
 183                         if (!variables[num_variables].name ||
 184                             !variables[num_variables].value)
 185                                 continue;
 186
 187                         plus_to_space_unescape(variables[num_variables].value);
 188                         rfc1738_unescape(variables[num_variables].value);
 189                         plus_to_space_unescape(variables[num_variables].name);
 190                         rfc1738_unescape(variables[num_variables].name);
 191
 192 #ifdef DEBUG_COMMENTS
 193                         printf("<!== Commandline var %s has value \"%s\"  ==>\n",
 194                                variables[num_variables].name,
 195                                variables[num_variables].value);
 196 #endif
 197                         num_variables++;
 198                         if (num_variables == MAX_VARIABLES) break;
 199                 }
 200
 201         }
 202 #ifdef DEBUG_COMMENTS
 203         printf("<!== End dump in cgi_load_variables() ==>\n");
 204 #endif
 205
 206         /* variables from the client are in UTF-8 - convert them
 207            to our internal unix charset before use */
 208         for (i=0;i<num_variables;i++) {
 209                 TALLOC_CTX *frame = talloc_stackframe();
 210                 char *dest = NULL;
 211                 size_t dest_len;
 212
 213                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 214                                variables[i].name, strlen(variables[i].name),
 215                                &dest, &dest_len);
 216                 SAFE_FREE(variables[i].name);
 217                 variables[i].name = SMB_STRDUP(dest ? dest : "");
 218
 219                 dest = NULL;
 220                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 221                                variables[i].value, strlen(variables[i].value),
 222                                &dest, &dest_len);
 223                 SAFE_FREE(variables[i].value);
 224                 variables[i].value = SMB_STRDUP(dest ? dest : "");
 225                 TALLOC_FREE(frame);
 226         }
 227 }
 228
 229
 230 /***************************************************************************
 231   find a variable passed via CGI
 232   Doesn't quite do what you think in the case of POST text variables, because
 233   if they exist they might have a value of "" or even " ", depending on the
 234   browser. Also doesn't allow for variables[] containing multiple variables
 235   with the same name and the same or different values.
 236   ***************************************************************************/
 237
 238 const char *cgi_variable(const char *name)
 239 {
 240         int i;
 241
 242         for (i=0;i<num_variables;i++)
 243                 if (strcmp(variables[i].name, name) == 0)
 244                         return variables[i].value;
 245         return NULL;
 246 }
 247
 248 /***************************************************************************
 249  Version of the above that can't return a NULL pointer.
 250 ***************************************************************************/
 251
 252 const char *cgi_variable_nonull(const char *name)
 253 {
 254         const char *var = cgi_variable(name);
 255         if (var) {
 256                 return var;
 257         } else {
 258                 return "";
 259         }
 260 }
 261
 262 /***************************************************************************
 263 tell a browser about a fatal error in the http processing
 264   ***************************************************************************/
 265 static void cgi_setup_error(const char *err, const char *header, const char *info)
 266 {
 267         if (!got_request) {
 268                 /* damn browsers don't like getting cut off before they give a request */
 269                 char line[1024];
 270                 while (fgets(line, sizeof(line)-1, stdin)) {
 271                         if (strnequal(line,"GET ", 4) ||
 272                             strnequal(line,"POST ", 5) ||
 273                             strnequal(line,"PUT ", 4)) {
 274                                 break;
 275                         }
 276                 }
 277         }
 278
 279         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);
 280         fclose(stdin);
 281         fclose(stdout);
 282         exit(0);
 283 }
 284
 285
 286 /***************************************************************************
 287 tell a browser about a fatal authentication error
 288   ***************************************************************************/
 289 static void cgi_auth_error(void)
 290 {
 291         if (inetd_server) {
 292                 cgi_setup_error("401 Authorization Required",
 293                                 "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 294                                 "You must be authenticated to use this service");
 295         } else {
 296                 printf("Content-Type: text/html\r\n");
 297
 298                 printf("\r\n<HTML><HEAD><TITLE>SWAT</TITLE></HEAD>\n");
 299                 printf("<BODY><H1>Installation Error</H1>\n");
 300                 printf("SWAT must be installed via inetd. It cannot be run as a CGI script<p>\n");
 301                 printf("</BODY></HTML>\r\n");
 302         }
 303         exit(0);
 304 }
 305
 306 /***************************************************************************
 307 authenticate when we are running as a CGI
 308   ***************************************************************************/
 309 static void cgi_web_auth(void)
 310 {
 311         const char *user = getenv("REMOTE_USER");
 312         struct passwd *pwd;
 313         const char *head = "Content-Type: text/html\r\n\r\n<HTML><BODY><H1>SWAT installation Error</H1>\n";
 314         const char *tail = "</BODY></HTML>\r\n";
 315
 316         if (!user) {
 317                 printf("%sREMOTE_USER not set. Not authenticated by web server.<br>%s\n",
 318                        head, tail);
 319                 exit(0);
 320         }
 321
 322         pwd = Get_Pwnam_alloc(talloc_tos(), user);
 323         if (!pwd) {
 324                 printf("%sCannot find user %s<br>%s\n", head, user, tail);
 325                 exit(0);
 326         }
 327
 328         setuid(0);
 329         setuid(pwd->pw_uid);
 330         if (geteuid() != pwd->pw_uid || getuid() != pwd->pw_uid) {
 331                 printf("%sFailed to become user %s - uid=%d/%d<br>%s\n",
 332                        head, user, (int)geteuid(), (int)getuid(), tail);
 333                 exit(0);
 334         }
 335         TALLOC_FREE(pwd);
 336 }
 337
 338
 339 /***************************************************************************
 340 handle a http authentication line
 341   ***************************************************************************/
 342 static bool cgi_handle_authorization(char *line)
 343 {
 344         char *p;
 345         fstring user, user_pass;
 346         struct passwd *pass = NULL;
 347         const char *rhost;
 348         char addr[INET6_ADDRSTRLEN];
 349         size_t size = 0;
 350
 351         if (!strnequal(line,"Basic ", 6)) {
 352                 goto err;
 353         }
 354         line += 6;
 355         while (line[0] == ' ') line++;
 356         base64_decode_inplace(line);
 357         if (!(p=strchr_m(line,':'))) {
 358                 /*
 359                  * Always give the same error so a cracker
 360                  * cannot tell why we fail.
 361                  */
 362                 goto err;
 363         }
 364         *p = 0;
 365
 366         if (!convert_string(CH_UTF8, CH_UNIX,
 367                        line, -1,
 368                        user, sizeof(user), &size)) {
 369                 goto err;
 370         }
 371
 372         if (!convert_string(CH_UTF8, CH_UNIX,
 373                        p+1, -1,
 374                        user_pass, sizeof(user_pass), &size)) {
 375                 goto err;
 376         }
 377
 378         /*
 379          * Try and get the user from the UNIX password file.
 380          */
 381
 382         pass = Get_Pwnam_alloc(talloc_tos(), user);
 383
 384         rhost = client_name(1);
 385         if (strequal(rhost,"UNKNOWN"))
 386                 rhost = client_addr(1, addr, sizeof(addr));
 387
 388         /*
 389          * Validate the password they have given.
 390          */
 391
 392         if NT_STATUS_IS_OK(pass_check(pass, user, rhost, user_pass, false)) {
 393                 if (pass) {
 394                         /*
 395                          * Password was ok.
 396                          */
 397
 398                         if ( initgroups(pass->pw_name, pass->pw_gid) != 0 )
 399                                 goto err;
 400
 401                         become_user_permanently(pass->pw_uid, pass->pw_gid);
 402
 403                         /* Save the users name */
 404                         C_user = SMB_STRDUP(user);
 405                         C_pass = SMB_STRDUP(user_pass);
 406                         TALLOC_FREE(pass);
 407                         return True;
 408                 }
 409         }
 410
 411 err:
 412         cgi_setup_error("401 Bad Authorization",
 413                         "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 414                         "username or password incorrect");
 415
 416         TALLOC_FREE(pass);
 417         return False;
 418 }
 419
 420 /***************************************************************************
 421 is this root?
 422   ***************************************************************************/
 423 bool am_root(void)
 424 {
 425         if (geteuid() == 0) {
 426                 return( True);
 427         } else {
 428                 return( False);
 429         }
 430 }
 431
 432 /***************************************************************************
 433 return a ptr to the users name
 434   ***************************************************************************/
 435 char *cgi_user_name(void)
 436 {
 437         return(C_user);
 438 }
 439
 440 /***************************************************************************
 441 return a ptr to the users password
 442   ***************************************************************************/
 443 char *cgi_user_pass(void)
 444 {
 445         return(C_pass);
 446 }
 447
 448 /***************************************************************************
 449 handle a file download
 450   ***************************************************************************/
 451 static void cgi_download(char *file)
 452 {
 453         SMB_STRUCT_STAT st;
 454         char buf[1024];
 455         int fd, l, i;
 456         char *p;
 457         char *lang;
 458
 459         /* sanitise the filename */
 460         for (i=0;file[i];i++) {
 461                 if (!isalnum((int)file[i]) && !strchr_m("/.-_", file[i])) {
 462                         cgi_setup_error("404 File Not Found","",
 463                                         "Illegal character in filename");
 464                 }
 465         }
 466
 467         if (sys_stat(file, &st, false) != 0)    {
 468                 cgi_setup_error("404 File Not Found","",
 469                                 "The requested file was not found");
 470         }
 471
 472         if (S_ISDIR(st.st_ex_mode))
 473         {
 474                 snprintf(buf, sizeof(buf), "%s/index.html", file);
 475                 if (!file_exist_stat(buf, &st, false)
 476                     || !S_ISREG(st.st_ex_mode))
 477                 {
 478                         cgi_setup_error("404 File Not Found","",
 479                                         "The requested file was not found");
 480                 }
 481         }
 482         else if (S_ISREG(st.st_ex_mode))
 483         {
 484                 snprintf(buf, sizeof(buf), "%s", file);
 485         }
 486         else
 487         {
 488                 cgi_setup_error("404 File Not Found","",
 489                                 "The requested file was not found");
 490         }
 491
 492         fd = web_open(buf,O_RDONLY,0);
 493         if (fd == -1) {
 494                 cgi_setup_error("404 File Not Found","",
 495                                 "The requested file was not found");
 496         }
 497         printf("HTTP/1.0 200 OK\r\n");
 498         if ((p=strrchr_m(buf, '.'))) {
 499                 if (strcmp(p,".gif")==0) {
 500                         printf("Content-Type: image/gif\r\n");
 501                 } else if (strcmp(p,".jpg")==0) {
 502                         printf("Content-Type: image/jpeg\r\n");
 503                 } else if (strcmp(p,".png")==0) {
 504                         printf("Content-Type: image/png\r\n");
 505                 } else if (strcmp(p,".css")==0) {
 506                         printf("Content-Type: text/css\r\n");
 507                 } else if (strcmp(p,".txt")==0) {
 508                         printf("Content-Type: text/plain\r\n");
 509                 } else {
 510                         printf("Content-Type: text/html\r\n");
 511                 }
 512         }
 513         printf("Expires: %s\r\n",
 514                    http_timestring(talloc_tos(), time(NULL)+EXPIRY_TIME));
 515
 516         lang = lang_tdb_current();
 517         if (lang) {
 518                 printf("Content-Language: %s\r\n", lang);
 519         }
 520
 521         printf("Content-Length: %d\r\n\r\n", (int)st.st_ex_size);
 522         while ((l=read(fd,buf,sizeof(buf)))>0) {
 523                 if (fwrite(buf, 1, l, stdout) != l) {
 524                         break;
 525                 }
 526         }
 527         close(fd);
 528         exit(0);
 529 }
 530
 531
 532
 533 /* return true if the char* contains ip addrs only.  Used to avoid
 534 name lookup calls */
 535
 536 static bool only_ipaddrs_in_list(const char **list)
 537 {
 538         bool only_ip = true;
 539
 540         if (!list) {
 541                 return true;
 542         }
 543
 544         for (; *list ; list++) {
 545                 /* factor out the special strings */
 546                 if (strequal(*list, "ALL") || strequal(*list, "FAIL") ||
 547                     strequal(*list, "EXCEPT")) {
 548                         continue;
 549                 }
 550
 551                 if (!is_ipaddress(*list)) {
 552                         /*
 553                          * If we failed, make sure that it was not because
 554                          * the token was a network/netmask pair. Only
 555                          * network/netmask pairs have a '/' in them.
 556                          */
 557                         if ((strchr_m(*list, '/')) == NULL) {
 558                                 only_ip = false;
 559                                 DEBUG(3,("only_ipaddrs_in_list: list has "
 560                                         "non-ip address (%s)\n",
 561                                         *list));
 562                                 break;
 563                         }
 564                 }
 565         }
 566
 567         return only_ip;
 568 }
 569
 570 /* return true if access should be allowed to a service for a socket */
 571 static bool check_access(int sock, const char **allow_list,
 572                          const char **deny_list)
 573 {
 574         bool ret = false;
 575         bool only_ip = false;
 576         char addr[INET6_ADDRSTRLEN];
 577
 578         if ((!deny_list || *deny_list==0) && (!allow_list || *allow_list==0)) {
 579                 return true;
 580         }
 581
 582         /* Bypass name resolution calls if the lists
 583          * only contain IP addrs */
 584         if (only_ipaddrs_in_list(allow_list) &&
 585             only_ipaddrs_in_list(deny_list)) {
 586                 only_ip = true;
 587                 DEBUG (3, ("check_access: no hostnames "
 588                            "in host allow/deny list.\n"));
 589                 ret = allow_access(deny_list,
 590                                    allow_list,
 591                                    "",
 592                                    get_peer_addr(sock,addr,sizeof(addr)));
 593         } else {
 594                 DEBUG (3, ("check_access: hostnames in "
 595                            "host allow/deny list.\n"));
 596                 ret = allow_access(deny_list,
 597                                    allow_list,
 598                                    get_peer_name(sock,true),
 599                                    get_peer_addr(sock,addr,sizeof(addr)));
 600         }
 601
 602         if (ret) {
 603                 DEBUG(2,("Allowed connection from %s (%s)\n",
 604                          only_ip ? "" : get_peer_name(sock,true),
 605                          get_peer_addr(sock,addr,sizeof(addr))));
 606         } else {
 607                 DEBUG(0,("Denied connection from %s (%s)\n",
 608                          only_ip ? "" : get_peer_name(sock,true),
 609                          get_peer_addr(sock,addr,sizeof(addr))));
 610         }
 611
 612         return(ret);
 613 }
 614
 615 /**
 616  * @brief Setup the CGI framework.
 617  *
 618  * Setup the cgi framework, handling the possibility that this program
 619  * is either run as a true CGI program with a gateway to a web server, or
 620  * is itself a mini web server.
 621  **/
 622 void cgi_setup(const char *rootdir, int auth_required)
 623 {
 624         bool authenticated = False;
 625         char line[1024];
 626         char *url=NULL;
 627         char *p;
 628         char *lang;
 629
 630         if (chdir(rootdir)) {
 631                 cgi_setup_error("500 Server Error", "",
 632                                 "chdir failed - the server is not configured correctly");
 633         }
 634
 635         /* Handle the possibility we might be running as non-root */
 636         sec_init();
 637
 638         if ((lang=getenv("HTTP_ACCEPT_LANGUAGE"))) {
 639                 /* if running as a cgi program */
 640                 web_set_lang(lang);
 641         }
 642
 643         /* maybe we are running under a web server */
 644         if (getenv("CONTENT_LENGTH") || getenv("REQUEST_METHOD")) {
 645                 if (auth_required) {
 646                         cgi_web_auth();
 647                 }
 648                 return;
 649         }
 650
 651         inetd_server = True;
 652
 653         if (!check_access(1, lp_hostsallow(-1), lp_hostsdeny(-1))) {
 654                 cgi_setup_error("403 Forbidden", "",
 655                                 "Samba is configured to deny access from this client\n<br>Check your \"hosts allow\" and \"hosts deny\" options in smb.conf ");
 656         }
 657
 658         /* we are a mini-web server. We need to read the request from stdin
 659            and handle authentication etc */
 660         while (fgets(line, sizeof(line)-1, stdin)) {
 661                 if (line[0] == '\r' || line[0] == '\n') break;
 662                 if (strnequal(line,"GET ", 4)) {
 663                         got_request = True;
 664                         url = SMB_STRDUP(&line[4]);
 665                 } else if (strnequal(line,"POST ", 5)) {
 666                         got_request = True;
 667                         request_post = 1;
 668                         url = SMB_STRDUP(&line[5]);
 669                 } else if (strnequal(line,"PUT ", 4)) {
 670                         got_request = True;
 671                         cgi_setup_error("400 Bad Request", "",
 672                                         "This server does not accept PUT requests");
 673                 } else if (strnequal(line,"Authorization: ", 15)) {
 674                         authenticated = cgi_handle_authorization(&line[15]);
 675                 } else if (strnequal(line,"Content-Length: ", 16)) {
 676                         content_length = atoi(&line[16]);
 677                 } else if (strnequal(line,"Accept-Language: ", 17)) {
 678                         web_set_lang(&line[17]);
 679                 }
 680                 /* ignore all other requests! */
 681         }
 682
 683         if (auth_required && !authenticated) {
 684                 cgi_auth_error();
 685         }
 686
 687         if (!url) {
 688                 cgi_setup_error("400 Bad Request", "",
 689                                 "You must specify a GET or POST request");
 690         }
 691
 692         /* trim the URL */
 693         if ((p = strchr_m(url,' ')) || (p=strchr_m(url,'\t'))) {
 694                 *p = 0;
 695         }
 696         while (*url && strchr_m("\r\n",url[strlen(url)-1])) {
 697                 url[strlen(url)-1] = 0;
 698         }
 699
 700         /* anything following a ? in the URL is part of the query string */
 701         if ((p=strchr_m(url,'?'))) {
 702                 query_string = p+1;
 703                 *p = 0;
 704         }
 705
 706         string_sub(url, "/swat/", "", 0);
 707
 708         if (url[0] != '/' && strstr(url,"..")==0) {
 709                 cgi_download(url);
 710         }
 711
 712         printf("HTTP/1.0 200 OK\r\nConnection: close\r\n");
 713         printf("Date: %s\r\n", http_timestring(talloc_tos(), time(NULL)));
 714         baseurl = "";
 715         pathinfo = url+1;
 716 }
 717
 718
 719 /***************************************************************************
 720 return the current pages URL
 721   ***************************************************************************/
 722 const char *cgi_baseurl(void)
 723 {
 724         if (inetd_server) {
 725                 return baseurl;
 726         }
 727         return getenv("SCRIPT_NAME");
 728 }
 729
 730 /***************************************************************************
 731 return the current pages path info
 732   ***************************************************************************/
 733 const char *cgi_pathinfo(void)
 734 {
 735         char *r;
 736         if (inetd_server) {
 737                 return pathinfo;
 738         }
 739         r = getenv("PATH_INFO");
 740         if (!r) return "";
 741         if (*r == '/') r++;
 742         return r;
 743 }
 744
 745 /***************************************************************************
 746 return the hostname of the client
 747   ***************************************************************************/
 748 const char *cgi_remote_host(void)
 749 {
 750         if (inetd_server) {
 751                 return get_peer_name(1,False);
 752         }
 753         return getenv("REMOTE_HOST");
 754 }
 755
 756 /***************************************************************************
 757 return the hostname of the client
 758   ***************************************************************************/
 759 const char *cgi_remote_addr(void)
 760 {
 761         if (inetd_server) {
 762                 char addr[INET6_ADDRSTRLEN];
 763                 get_peer_addr(1,addr,sizeof(addr));
 764                 return talloc_strdup(talloc_tos(), addr);
 765         }
 766         return getenv("REMOTE_ADDR");
 767 }
 768
 769
 770 /***************************************************************************
 771 return True if the request was a POST
 772   ***************************************************************************/
 773 bool cgi_waspost(void)
 774 {
 775         if (inetd_server) {
 776                 return request_post;
 777         }
 778         return strequal(getenv("REQUEST_METHOD"), "POST");
 779 }