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 #include "secrets.h"
  27
  28 #define MAX_VARIABLES 10000
  29
  30 /* set the expiry on fixed pages */
  31 #define EXPIRY_TIME (60*60*24*7)
  32
  33 #ifdef DEBUG_COMMENTS
  34 extern void print_title(char *fmt, ...);
  35 #endif
  36
  37 struct cgi_var {
  38         char *name;
  39         char *value;
  40 };
  41
  42 static struct cgi_var variables[MAX_VARIABLES];
  43 static int num_variables;
  44 static int content_length;
  45 static int request_post;
  46 static char *query_string;
  47 static const char *baseurl;
  48 static char *pathinfo;
  49 static char *C_user;
  50 static char *C_pass;
  51 static bool inetd_server;
  52 static bool got_request;
  53
  54 static char *grab_line(FILE *f, int *cl)
  55 {
  56         char *ret = NULL;
  57         int i = 0;
  58         int len = 0;
  59
  60         while ((*cl)) {
  61                 int c;
  62
  63                 if (i == len) {
  64                         char *ret2;
  65                         if (len == 0) len = 1024;
  66                         else len *= 2;
  67                         ret2 = (char *)SMB_REALLOC_KEEP_OLD_ON_ERROR(ret, len);
  68                         if (!ret2) return ret;
  69                         ret = ret2;
  70                 }
  71
  72                 c = fgetc(f);
  73                 (*cl)--;
  74
  75                 if (c == EOF) {
  76                         (*cl) = 0;
  77                         break;
  78                 }
  79
  80                 if (c == '\r') continue;
  81
  82                 if (strchr_m("\n&", c)) break;
  83
  84                 ret[i++] = c;
  85
  86         }
  87
  88         if (ret) {
  89                 ret[i] = 0;
  90         }
  91         return ret;
  92 }
  93
  94 /**
  95  URL encoded strings can have a '+', which should be replaced with a space
  96
  97  (This was in rfc1738_unescape(), but that broke the squid helper)
  98 **/
  99
 100 static void plus_to_space_unescape(char *buf)
 101 {
 102         char *p=buf;
 103
 104         while ((p=strchr_m(p,'+')))
 105                 *p = ' ';
 106 }
 107
 108 /***************************************************************************
 109   load all the variables passed to the CGI program. May have multiple variables
 110   with the same name and the same or different values. Takes a file parameter
 111   for simulating CGI invocation eg loading saved preferences.
 112   ***************************************************************************/
 113 void cgi_load_variables(void)
 114 {
 115         static char *line;
 116         char *p, *s, *tok;
 117         int len, i;
 118         FILE *f = stdin;
 119
 120 #ifdef DEBUG_COMMENTS
 121         char dummy[100]="";
 122         print_title(dummy);
 123         d_printf("<!== Start dump in cgi_load_variables() %s ==>\n",__FILE__);
 124 #endif
 125
 126         if (!content_length) {
 127                 p = getenv("CONTENT_LENGTH");
 128                 len = p?atoi(p):0;
 129         } else {
 130                 len = content_length;
 131         }
 132
 133
 134         if (len > 0 &&
 135             (request_post ||
 136              ((s=getenv("REQUEST_METHOD")) &&
 137               strequal(s,"POST")))) {
 138                 while (len && (line=grab_line(f, &len))) {
 139                         p = strchr_m(line,'=');
 140                         if (!p) continue;
 141
 142                         *p = 0;
 143
 144                         variables[num_variables].name = SMB_STRDUP(line);
 145                         variables[num_variables].value = SMB_STRDUP(p+1);
 146
 147                         SAFE_FREE(line);
 148
 149                         if (!variables[num_variables].name ||
 150                             !variables[num_variables].value)
 151                                 continue;
 152
 153                         plus_to_space_unescape(variables[num_variables].value);
 154                         rfc1738_unescape(variables[num_variables].value);
 155                         plus_to_space_unescape(variables[num_variables].name);
 156                         rfc1738_unescape(variables[num_variables].name);
 157
 158 #ifdef DEBUG_COMMENTS
 159                         printf("<!== POST var %s has value \"%s\"  ==>\n",
 160                                variables[num_variables].name,
 161                                variables[num_variables].value);
 162 #endif
 163
 164                         num_variables++;
 165                         if (num_variables == MAX_VARIABLES) break;
 166                 }
 167         }
 168
 169         fclose(stdin);
 170         open("/dev/null", O_RDWR);
 171
 172         if ((s=query_string) || (s=getenv("QUERY_STRING"))) {
 173                 char *saveptr;
 174                 for (tok=strtok_r(s, "&;", &saveptr); tok;
 175                      tok=strtok_r(NULL, "&;", &saveptr)) {
 176                         p = strchr_m(tok,'=');
 177                         if (!p) continue;
 178
 179                         *p = 0;
 180
 181                         variables[num_variables].name = SMB_STRDUP(tok);
 182                         variables[num_variables].value = SMB_STRDUP(p+1);
 183
 184                         if (!variables[num_variables].name ||
 185                             !variables[num_variables].value)
 186                                 continue;
 187
 188                         plus_to_space_unescape(variables[num_variables].value);
 189                         rfc1738_unescape(variables[num_variables].value);
 190                         plus_to_space_unescape(variables[num_variables].name);
 191                         rfc1738_unescape(variables[num_variables].name);
 192
 193 #ifdef DEBUG_COMMENTS
 194                         printf("<!== Commandline var %s has value \"%s\"  ==>\n",
 195                                variables[num_variables].name,
 196                                variables[num_variables].value);
 197 #endif
 198                         num_variables++;
 199                         if (num_variables == MAX_VARIABLES) break;
 200                 }
 201
 202         }
 203 #ifdef DEBUG_COMMENTS
 204         printf("<!== End dump in cgi_load_variables() ==>\n");
 205 #endif
 206
 207         /* variables from the client are in UTF-8 - convert them
 208            to our internal unix charset before use */
 209         for (i=0;i<num_variables;i++) {
 210                 TALLOC_CTX *frame = talloc_stackframe();
 211                 char *dest = NULL;
 212                 size_t dest_len;
 213
 214                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 215                                variables[i].name, strlen(variables[i].name),
 216                                &dest, &dest_len, True);
 217                 SAFE_FREE(variables[i].name);
 218                 variables[i].name = SMB_STRDUP(dest ? dest : "");
 219
 220                 dest = NULL;
 221                 convert_string_talloc(frame, CH_UTF8, CH_UNIX,
 222                                variables[i].value, strlen(variables[i].value),
 223                                &dest, &dest_len, True);
 224                 SAFE_FREE(variables[i].value);
 225                 variables[i].value = SMB_STRDUP(dest ? dest : "");
 226                 TALLOC_FREE(frame);
 227         }
 228 }
 229
 230
 231 /***************************************************************************
 232   find a variable passed via CGI
 233   Doesn't quite do what you think in the case of POST text variables, because
 234   if they exist they might have a value of "" or even " ", depending on the
 235   browser. Also doesn't allow for variables[] containing multiple variables
 236   with the same name and the same or different values.
 237   ***************************************************************************/
 238
 239 const char *cgi_variable(const char *name)
 240 {
 241         int i;
 242
 243         for (i=0;i<num_variables;i++)
 244                 if (strcmp(variables[i].name, name) == 0)
 245                         return variables[i].value;
 246         return NULL;
 247 }
 248
 249 /***************************************************************************
 250  Version of the above that can't return a NULL pointer.
 251 ***************************************************************************/
 252
 253 const char *cgi_variable_nonull(const char *name)
 254 {
 255         const char *var = cgi_variable(name);
 256         if (var) {
 257                 return var;
 258         } else {
 259                 return "";
 260         }
 261 }
 262
 263 /***************************************************************************
 264 tell a browser about a fatal error in the http processing
 265   ***************************************************************************/
 266 static void cgi_setup_error(const char *err, const char *header, const char *info)
 267 {
 268         if (!got_request) {
 269                 /* damn browsers don't like getting cut off before they give a request */
 270                 char line[1024];
 271                 while (fgets(line, sizeof(line)-1, stdin)) {
 272                         if (strnequal(line,"GET ", 4) ||
 273                             strnequal(line,"POST ", 5) ||
 274                             strnequal(line,"PUT ", 4)) {
 275                                 break;
 276                         }
 277                 }
 278         }
 279
 280         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);
 281         fclose(stdin);
 282         fclose(stdout);
 283         exit(0);
 284 }
 285
 286
 287 /***************************************************************************
 288 tell a browser about a fatal authentication error
 289   ***************************************************************************/
 290 static void cgi_auth_error(void)
 291 {
 292         if (inetd_server) {
 293                 cgi_setup_error("401 Authorization Required",
 294                                 "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 295                                 "You must be authenticated to use this service");
 296         } else {
 297                 printf("Content-Type: text/html\r\n");
 298
 299                 printf("\r\n<HTML><HEAD><TITLE>SWAT</TITLE></HEAD>\n");
 300                 printf("<BODY><H1>Installation Error</H1>\n");
 301                 printf("SWAT must be installed via inetd. It cannot be run as a CGI script<p>\n");
 302                 printf("</BODY></HTML>\r\n");
 303         }
 304         exit(0);
 305 }
 306
 307 /***************************************************************************
 308 authenticate when we are running as a CGI
 309   ***************************************************************************/
 310 static void cgi_web_auth(void)
 311 {
 312         const char *user = getenv("REMOTE_USER");
 313         struct passwd *pwd;
 314         const char *head = "Content-Type: text/html\r\n\r\n<HTML><BODY><H1>SWAT installation Error</H1>\n";
 315         const char *tail = "</BODY></HTML>\r\n";
 316
 317         if (!user) {
 318                 printf("%sREMOTE_USER not set. Not authenticated by web server.<br>%s\n",
 319                        head, tail);
 320                 exit(0);
 321         }
 322
 323         pwd = Get_Pwnam_alloc(talloc_tos(), user);
 324         if (!pwd) {
 325                 printf("%sCannot find user %s<br>%s\n", head, user, tail);
 326                 exit(0);
 327         }
 328
 329         C_user = SMB_STRDUP(user);
 330
 331         if (!setuid(0)) {
 332                 C_pass = secrets_fetch_generic("root", "SWAT");
 333                 if (C_pass == NULL) {
 334                         char *tmp_pass = NULL;
 335                         tmp_pass = generate_random_password(talloc_tos(),
 336                                                             16, 16);
 337                         if (tmp_pass == NULL) {
 338                                 printf("%sFailed to create random nonce for "
 339                                        "SWAT session\n<br>%s\n", head, tail);
 340                                 exit(0);
 341                         }
 342                         secrets_store_generic("root", "SWAT", tmp_pass);
 343                         C_pass = SMB_STRDUP(tmp_pass);
 344                         TALLOC_FREE(tmp_pass);
 345                 }
 346         }
 347         setuid(pwd->pw_uid);
 348         if (geteuid() != pwd->pw_uid || getuid() != pwd->pw_uid) {
 349                 printf("%sFailed to become user %s - uid=%d/%d<br>%s\n",
 350                        head, user, (int)geteuid(), (int)getuid(), tail);
 351                 exit(0);
 352         }
 353         TALLOC_FREE(pwd);
 354 }
 355
 356
 357 /***************************************************************************
 358 handle a http authentication line
 359   ***************************************************************************/
 360 static bool cgi_handle_authorization(char *line)
 361 {
 362         char *p;
 363         fstring user, user_pass;
 364         struct passwd *pass = NULL;
 365         const char *rhost;
 366         char addr[INET6_ADDRSTRLEN];
 367
 368         if (!strnequal(line,"Basic ", 6)) {
 369                 goto err;
 370         }
 371         line += 6;
 372         while (line[0] == ' ') line++;
 373         base64_decode_inplace(line);
 374         if (!(p=strchr_m(line,':'))) {
 375                 /*
 376                  * Always give the same error so a cracker
 377                  * cannot tell why we fail.
 378                  */
 379                 goto err;
 380         }
 381         *p = 0;
 382
 383         convert_string(CH_UTF8, CH_UNIX,
 384                        line, -1,
 385                        user, sizeof(user), True);
 386
 387         convert_string(CH_UTF8, CH_UNIX,
 388                        p+1, -1,
 389                        user_pass, sizeof(user_pass), True);
 390
 391         /*
 392          * Try and get the user from the UNIX password file.
 393          */
 394
 395         pass = Get_Pwnam_alloc(talloc_tos(), user);
 396
 397         rhost = client_name(1);
 398         if (strequal(rhost,"UNKNOWN"))
 399                 rhost = client_addr(1, addr, sizeof(addr));
 400
 401         /*
 402          * Validate the password they have given.
 403          */
 404
 405         if NT_STATUS_IS_OK(pass_check(pass, user, rhost, user_pass, false)) {
 406                 if (pass) {
 407                         /*
 408                          * Password was ok.
 409                          */
 410
 411                         if ( initgroups(pass->pw_name, pass->pw_gid) != 0 )
 412                                 goto err;
 413
 414                         become_user_permanently(pass->pw_uid, pass->pw_gid);
 415
 416                         /* Save the users name */
 417                         C_user = SMB_STRDUP(user);
 418                         C_pass = SMB_STRDUP(user_pass);
 419                         TALLOC_FREE(pass);
 420                         return True;
 421                 }
 422         }
 423
 424 err:
 425         cgi_setup_error("401 Bad Authorization",
 426                         "WWW-Authenticate: Basic realm=\"SWAT\"\r\n",
 427                         "username or password incorrect");
 428
 429         TALLOC_FREE(pass);
 430         return False;
 431 }
 432
 433 /***************************************************************************
 434 is this root?
 435   ***************************************************************************/
 436 bool am_root(void)
 437 {
 438         if (geteuid() == 0) {
 439                 return( True);
 440         } else {
 441                 return( False);
 442         }
 443 }
 444
 445 /***************************************************************************
 446 return a ptr to the users name
 447   ***************************************************************************/
 448 char *cgi_user_name(void)
 449 {
 450         return(C_user);
 451 }
 452
 453 /***************************************************************************
 454 return a ptr to the users password
 455   ***************************************************************************/
 456 char *cgi_user_pass(void)
 457 {
 458         return(C_pass);
 459 }
 460
 461 /***************************************************************************
 462 handle a file download
 463   ***************************************************************************/
 464 static void cgi_download(char *file)
 465 {
 466         SMB_STRUCT_STAT st;
 467         char buf[1024];
 468         int fd, l, i;
 469         char *p;
 470         char *lang;
 471
 472         /* sanitise the filename */
 473         for (i=0;file[i];i++) {
 474                 if (!isalnum((int)file[i]) && !strchr_m("/.-_", file[i])) {
 475                         cgi_setup_error("404 File Not Found","",
 476                                         "Illegal character in filename");
 477                 }
 478         }
 479
 480         if (sys_stat(file, &st, false) != 0)    {
 481                 cgi_setup_error("404 File Not Found","",
 482                                 "The requested file was not found");
 483         }
 484
 485         if (S_ISDIR(st.st_ex_mode))
 486         {
 487                 snprintf(buf, sizeof(buf), "%s/index.html", file);
 488                 if (!file_exist_stat(buf, &st, false)
 489                     || !S_ISREG(st.st_ex_mode))
 490                 {
 491                         cgi_setup_error("404 File Not Found","",
 492                                         "The requested file was not found");
 493                 }
 494         }
 495         else if (S_ISREG(st.st_ex_mode))
 496         {
 497                 snprintf(buf, sizeof(buf), "%s", file);
 498         }
 499         else
 500         {
 501                 cgi_setup_error("404 File Not Found","",
 502                                 "The requested file was not found");
 503         }
 504
 505         fd = web_open(buf,O_RDONLY,0);
 506         if (fd == -1) {
 507                 cgi_setup_error("404 File Not Found","",
 508                                 "The requested file was not found");
 509         }
 510         printf("HTTP/1.0 200 OK\r\n");
 511         if ((p=strrchr_m(buf, '.'))) {
 512                 if (strcmp(p,".gif")==0) {
 513                         printf("Content-Type: image/gif\r\n");
 514                 } else if (strcmp(p,".jpg")==0) {
 515                         printf("Content-Type: image/jpeg\r\n");
 516                 } else if (strcmp(p,".png")==0) {
 517                         printf("Content-Type: image/png\r\n");
 518                 } else if (strcmp(p,".css")==0) {
 519                         printf("Content-Type: text/css\r\n");
 520                 } else if (strcmp(p,".txt")==0) {
 521                         printf("Content-Type: text/plain\r\n");
 522                 } else {
 523                         printf("Content-Type: text/html\r\n");
 524                 }
 525         }
 526         printf("Expires: %s\r\n",
 527                    http_timestring(talloc_tos(), time(NULL)+EXPIRY_TIME));
 528
 529         lang = lang_tdb_current();
 530         if (lang) {
 531                 printf("Content-Language: %s\r\n", lang);
 532         }
 533
 534         printf("Content-Length: %d\r\n\r\n", (int)st.st_ex_size);
 535         while ((l=read(fd,buf,sizeof(buf)))>0) {
 536                 if (fwrite(buf, 1, l, stdout) != l) {
 537                         break;
 538                 }
 539         }
 540         close(fd);
 541         exit(0);
 542 }
 543
 544
 545
 546 /* return true if the char* contains ip addrs only.  Used to avoid
 547 name lookup calls */
 548
 549 static bool only_ipaddrs_in_list(const char **list)
 550 {
 551         bool only_ip = true;
 552
 553         if (!list) {
 554                 return true;
 555         }
 556
 557         for (; *list ; list++) {
 558                 /* factor out the special strings */
 559                 if (strequal(*list, "ALL") || strequal(*list, "FAIL") ||
 560                     strequal(*list, "EXCEPT")) {
 561                         continue;
 562                 }
 563
 564                 if (!is_ipaddress(*list)) {
 565                         /*
 566                          * If we failed, make sure that it was not because
 567                          * the token was a network/netmask pair. Only
 568                          * network/netmask pairs have a '/' in them.
 569                          */
 570                         if ((strchr_m(*list, '/')) == NULL) {
 571                                 only_ip = false;
 572                                 DEBUG(3,("only_ipaddrs_in_list: list has "
 573                                         "non-ip address (%s)\n",
 574                                         *list));
 575                                 break;
 576                         }
 577                 }
 578         }
 579
 580         return only_ip;
 581 }
 582
 583 /* return true if access should be allowed to a service for a socket */
 584 static bool check_access(int sock, const char **allow_list,
 585                          const char **deny_list)
 586 {
 587         bool ret = false;
 588         bool only_ip = false;
 589         char addr[INET6_ADDRSTRLEN];
 590
 591         if ((!deny_list || *deny_list==0) && (!allow_list || *allow_list==0)) {
 592                 return true;
 593         }
 594
 595         /* Bypass name resolution calls if the lists
 596          * only contain IP addrs */
 597         if (only_ipaddrs_in_list(allow_list) &&
 598             only_ipaddrs_in_list(deny_list)) {
 599                 only_ip = true;
 600                 DEBUG (3, ("check_access: no hostnames "
 601                            "in host allow/deny list.\n"));
 602                 ret = allow_access(deny_list,
 603                                    allow_list,
 604                                    "",
 605                                    get_peer_addr(sock,addr,sizeof(addr)));
 606         } else {
 607                 DEBUG (3, ("check_access: hostnames in "
 608                            "host allow/deny list.\n"));
 609                 ret = allow_access(deny_list,
 610                                    allow_list,
 611                                    get_peer_name(sock,true),
 612                                    get_peer_addr(sock,addr,sizeof(addr)));
 613         }
 614
 615         if (ret) {
 616                 DEBUG(2,("Allowed connection from %s (%s)\n",
 617                          only_ip ? "" : get_peer_name(sock,true),
 618                          get_peer_addr(sock,addr,sizeof(addr))));
 619         } else {
 620                 DEBUG(0,("Denied connection from %s (%s)\n",
 621                          only_ip ? "" : get_peer_name(sock,true),
 622                          get_peer_addr(sock,addr,sizeof(addr))));
 623         }
 624
 625         return(ret);
 626 }
 627
 628 /**
 629  * @brief Setup the CGI framework.
 630  *
 631  * Setup the cgi framework, handling the possibility that this program
 632  * is either run as a true CGI program with a gateway to a web server, or
 633  * is itself a mini web server.
 634  **/
 635 void cgi_setup(const char *rootdir, int auth_required)
 636 {
 637         bool authenticated = False;
 638         char line[1024];
 639         char *url=NULL;
 640         char *p;
 641         char *lang;
 642
 643         if (chdir(rootdir)) {
 644                 cgi_setup_error("500 Server Error", "",
 645                                 "chdir failed - the server is not configured correctly");
 646         }
 647
 648         /* Handle the possibility we might be running as non-root */
 649         sec_init();
 650
 651         if ((lang=getenv("HTTP_ACCEPT_LANGUAGE"))) {
 652                 /* if running as a cgi program */
 653                 web_set_lang(lang);
 654         }
 655
 656         /* maybe we are running under a web server */
 657         if (getenv("CONTENT_LENGTH") || getenv("REQUEST_METHOD")) {
 658                 if (auth_required) {
 659                         cgi_web_auth();
 660                 }
 661                 return;
 662         }
 663
 664         inetd_server = True;
 665
 666         if (!check_access(1, lp_hostsallow(-1), lp_hostsdeny(-1))) {
 667                 cgi_setup_error("403 Forbidden", "",
 668                                 "Samba is configured to deny access from this client\n<br>Check your \"hosts allow\" and \"hosts deny\" options in smb.conf ");
 669         }
 670
 671         /* we are a mini-web server. We need to read the request from stdin
 672            and handle authentication etc */
 673         while (fgets(line, sizeof(line)-1, stdin)) {
 674                 if (line[0] == '\r' || line[0] == '\n') break;
 675                 if (strnequal(line,"GET ", 4)) {
 676                         got_request = True;
 677                         url = SMB_STRDUP(&line[4]);
 678                 } else if (strnequal(line,"POST ", 5)) {
 679                         got_request = True;
 680                         request_post = 1;
 681                         url = SMB_STRDUP(&line[5]);
 682                 } else if (strnequal(line,"PUT ", 4)) {
 683                         got_request = True;
 684                         cgi_setup_error("400 Bad Request", "",
 685                                         "This server does not accept PUT requests");
 686                 } else if (strnequal(line,"Authorization: ", 15)) {
 687                         authenticated = cgi_handle_authorization(&line[15]);
 688                 } else if (strnequal(line,"Content-Length: ", 16)) {
 689                         content_length = atoi(&line[16]);
 690                 } else if (strnequal(line,"Accept-Language: ", 17)) {
 691                         web_set_lang(&line[17]);
 692                 }
 693                 /* ignore all other requests! */
 694         }
 695
 696         if (auth_required && !authenticated) {
 697                 cgi_auth_error();
 698         }
 699
 700         if (!url) {
 701                 cgi_setup_error("400 Bad Request", "",
 702                                 "You must specify a GET or POST request");
 703         }
 704
 705         /* trim the URL */
 706         if ((p = strchr_m(url,' ')) || (p=strchr_m(url,'\t'))) {
 707                 *p = 0;
 708         }
 709         while (*url && strchr_m("\r\n",url[strlen(url)-1])) {
 710                 url[strlen(url)-1] = 0;
 711         }
 712
 713         /* anything following a ? in the URL is part of the query string */
 714         if ((p=strchr_m(url,'?'))) {
 715                 query_string = p+1;
 716                 *p = 0;
 717         }
 718
 719         string_sub(url, "/swat/", "", 0);
 720
 721         if (url[0] != '/' && strstr(url,"..")==0) {
 722                 cgi_download(url);
 723         }
 724
 725         printf("HTTP/1.0 200 OK\r\nConnection: close\r\n");
 726         printf("Date: %s\r\n", http_timestring(talloc_tos(), time(NULL)));
 727         baseurl = "";
 728         pathinfo = url+1;
 729 }
 730
 731
 732 /***************************************************************************
 733 return the current pages URL
 734   ***************************************************************************/
 735 const char *cgi_baseurl(void)
 736 {
 737         if (inetd_server) {
 738                 return baseurl;
 739         }
 740         return getenv("SCRIPT_NAME");
 741 }
 742
 743 /***************************************************************************
 744 return the current pages path info
 745   ***************************************************************************/
 746 const char *cgi_pathinfo(void)
 747 {
 748         char *r;
 749         if (inetd_server) {
 750                 return pathinfo;
 751         }
 752         r = getenv("PATH_INFO");
 753         if (!r) return "";
 754         if (*r == '/') r++;
 755         return r;
 756 }
 757
 758 /***************************************************************************
 759 return the hostname of the client
 760   ***************************************************************************/
 761 const char *cgi_remote_host(void)
 762 {
 763         if (inetd_server) {
 764                 return get_peer_name(1,False);
 765         }
 766         return getenv("REMOTE_HOST");
 767 }
 768
 769 /***************************************************************************
 770 return the hostname of the client
 771   ***************************************************************************/
 772 const char *cgi_remote_addr(void)
 773 {
 774         if (inetd_server) {
 775                 char addr[INET6_ADDRSTRLEN];
 776                 get_peer_addr(1,addr,sizeof(addr));
 777                 return talloc_strdup(talloc_tos(), addr);
 778         }
 779         return getenv("REMOTE_ADDR");
 780 }
 781
 782
 783 /***************************************************************************
 784 return True if the request was a POST
 785   ***************************************************************************/
 786 bool cgi_waspost(void)
 787 {
 788         if (inetd_server) {
 789                 return request_post;
 790         }
 791         return strequal(getenv("REQUEST_METHOD"), "POST");
 792 }