webcit/auth.c

   1 /*
   2  * auth.c
   3  *
   4  * This file contains code which relates to authentication of users to Citadel.
   5  *
   6  * $Id$
   7  */
   8
   9
  10 #include <ctype.h>
  11 #include <stdlib.h>
  12 #include <unistd.h>
  13 #include <stdio.h>
  14 #include <fcntl.h>
  15 #include <signal.h>
  16 #include <sys/types.h>
  17 #include <sys/wait.h>
  18 #include <sys/socket.h>
  19 #include <sys/time.h>
  20 #include <limits.h>
  21 #include <netinet/in.h>
  22 #include <netdb.h>
  23 #include <string.h>
  24 #include <pwd.h>
  25 #include <errno.h>
  26 #include <stdarg.h>
  27 #include <pthread.h>
  28 #include <signal.h>
  29 #include "webcit.h"
  30
  31
  32 char *axdefs[] =
  33 {
  34         "Deleted",
  35         "New User",
  36         "Problem User",
  37         "Local User",
  38         "Network User",
  39         "Preferred User",
  40         "Aide"
  41 };
  42
  43 /*
  44  * Display the login screen
  45  */
  46 void display_login(char *mesg)
  47 {
  48         char buf[256];
  49
  50         wprintf("HTTP/1.0 200 OK\n");
  51         output_headers(3);
  52
  53         /* Da banner */
  54         wprintf("<CENTER><TABLE border=0 width=100%><TR><TD>\n");
  55         wprintf("<IMG SRC=\"/image&name=hello\">");
  56         wprintf("</TD><TD><CENTER>\n");
  57
  58         if (mesg != NULL) {
  59                 wprintf("<font size=+1><b>%s</b></font>", mesg);
  60         } else {
  61                 serv_puts("MESG hello");
  62                 serv_gets(buf);
  63                 if (buf[0] == '1')
  64                         fmout(NULL);
  65         }
  66
  67         wprintf("</CENTER></TD></TR></TABLE></CENTER>\n");
  68         wprintf("<HR>\n");
  69
  70         /* Da login box */
  71         wprintf("<CENTER><FORM ACTION=\"/login\" METHOD=\"POST\">\n");
  72         wprintf("<TABLE border><TR>\n");
  73         wprintf("<TD>User Name:</TD>\n");
  74         wprintf("<TD><INPUT TYPE=\"text\" NAME=\"name\" MAXLENGTH=\"25\">\n");
  75         wprintf("</TD></TR><TR>\n");
  76         wprintf("<TD>Password:</TD>\n");
  77         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"pass\" MAXLENGTH=\"20\"></TD>\n");
  78         wprintf("</TR></TABLE>\n");
  79         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Login\">\n");
  80         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"New User\">\n");
  81         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Exit\">\n");
  82
  83         /* Da instructions */
  84         wprintf("<LI><EM>If you already have an account on %s,",
  85                 serv_info.serv_humannode);
  86         wprintf("</EM> enter your user name\n");
  87         wprintf("and password and click \"<TT>Login</TT>.\"<BR>\n");
  88         wprintf("<LI><EM>If you are a new user,</EM>\n");
  89         wprintf("enter the name and password you wish to use, and click\n");
  90         wprintf("\"New User.\"<BR><LI>");
  91         wprintf("<EM>Please log off properly when finished.</EM>");
  92         wprintf("<LI>You must use a browser that supports <i>cookies</i>.<BR>\n");
  93         wprintf("</EM></UL>\n");
  94
  95         wDumpContent(0);        /* No menu here; not logged in yet! */
  96 }
  97
  98
  99
 100
 101 /*
 102  * This function needs to get called whenever a PASS or NEWU succeeds.
 103  */
 104 void become_logged_in(char *user, char *pass, char *serv_response)
 105 {
 106         WC->logged_in = 1;
 107         extract(WC->wc_username, &serv_response[4], 0);
 108         strcpy(WC->wc_password, pass);
 109         WC->axlevel = extract_int(&serv_response[4], 1);
 110         if (WC->axlevel >= 6)
 111                 WC->is_aide = 1;
 112 }
 113
 114
 115 void do_login(void)
 116 {
 117         char buf[256];
 118         int need_regi = 0;
 119
 120
 121         if (!strcasecmp(bstr("action"), "Exit")) {
 122                 do_logout();
 123         }
 124         if (!strcasecmp(bstr("action"), "Login")) {
 125                 serv_printf("USER %s", bstr("name"));
 126                 serv_gets(buf);
 127                 if (buf[0] == '3') {
 128                         serv_printf("PASS %s", bstr("pass"));
 129                         serv_gets(buf);
 130                         if (buf[0] == '2') {
 131                                 become_logged_in(bstr("name"),
 132                                                  bstr("pass"), buf);
 133                         } else {
 134                                 display_login(&buf[4]);
 135                                 return;
 136                         }
 137                 } else {
 138                         display_login(&buf[4]);
 139                         return;
 140                 }
 141         }
 142         if (!strcasecmp(bstr("action"), "New User")) {
 143                 serv_printf("NEWU %s", bstr("name"));
 144                 serv_gets(buf);
 145                 if (buf[0] == '2') {
 146                         become_logged_in(bstr("name"), bstr("pass"), buf);
 147                         serv_printf("SETP %s", bstr("pass"));
 148                         serv_gets(buf);
 149                 } else {
 150                         display_login(&buf[4]);
 151                         return;
 152                 }
 153         }
 154         if (WC->logged_in) {
 155                 serv_puts("CHEK");
 156                 serv_gets(buf);
 157                 if (buf[0] == '2') {
 158                         WC->new_mail = extract_int(&buf[4], 0);
 159                         need_regi = extract_int(&buf[4], 1);
 160                         WC->need_vali = extract_int(&buf[4], 2);
 161                 }
 162                 if (need_regi) {
 163                         display_reg(1);
 164                 } else {
 165                         do_welcome();
 166                 }
 167         } else {
 168                 display_login("Your password was not accepted.");
 169         }
 170
 171 }
 172
 173 void do_welcome(void)
 174 {
 175         smart_goto("_BASEROOM_");
 176 }
 177
 178
 179 void do_logout(void)
 180 {
 181         char buf[256];
 182
 183         strcpy(WC->wc_username, "");
 184         strcpy(WC->wc_password, "");
 185         strcpy(WC->wc_roomname, "");
 186
 187         wprintf("HTTP/1.0 200 OK\n");
 188         output_headers(2);      /* note "2" causes cookies to be unset */
 189
 190         wprintf("<CENTER>");
 191         serv_puts("MESG goodbye");
 192         serv_gets(buf);
 193
 194         if (buf[0] == '1')
 195                 fmout(NULL);
 196         else
 197                 wprintf("Goodbye\n");
 198
 199         wprintf("<HR><A HREF=\"/\">Log in again</A></CENTER>\n");
 200         wDumpContent(2);
 201         serv_puts("QUIT");
 202         close(WC->serv_sock);
 203         WC->serv_sock = (-1);
 204         WC->killthis = 1;
 205 }
 206
 207
 208
 209
 210
 211 /*
 212  * validate new users
 213  */
 214 void validate(void)
 215 {
 216         char cmd[256];
 217         char user[256];
 218         char buf[256];
 219         int a;
 220
 221         wprintf("HTTP/1.0 200 OK\n");
 222         output_headers(1);
 223
 224         strcpy(buf, bstr("user"));
 225         if (strlen(buf) > 0)
 226                 if (strlen(bstr("WC->axlevel")) > 0) {
 227                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 228                         serv_gets(buf);
 229                         if (buf[0] != '2') {
 230                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 231                         }
 232                 }
 233         serv_puts("GNUR");
 234         serv_gets(buf);
 235
 236         if (buf[0] != '3') {
 237                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 238                 wDumpContent(1);
 239                 return;
 240         }
 241         strcpy(user, &buf[4]);
 242         serv_printf("GREG %s", user);
 243         serv_gets(cmd);
 244         if (cmd[0] == '1') {
 245                 a = 0;
 246                 do {
 247                         serv_gets(buf);
 248                         ++a;
 249                         if (a == 1)
 250                                 wprintf("User #%s<BR><H1>%s</H1>",
 251                                         buf, &cmd[4]);
 252                         if (a == 2)
 253                                 wprintf("PW: %s<BR>\n", buf);
 254                         if (a == 3)
 255                                 wprintf("%s<BR>\n", buf);
 256                         if (a == 4)
 257                                 wprintf("%s<BR>\n", buf);
 258                         if (a == 5)
 259                                 wprintf("%s, ", buf);
 260                         if (a == 6)
 261                                 wprintf("%s ", buf);
 262                         if (a == 7)
 263                                 wprintf("%s<BR>\n", buf);
 264                         if (a == 8)
 265                                 wprintf("%s<BR>\n", buf);
 266                         if (a == 9)
 267                                 wprintf("Current access level: %d (%s)\n",
 268                                         atoi(buf), axdefs[atoi(buf)]);
 269                 } while (strcmp(buf, "000"));
 270         } else {
 271                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 272         }
 273
 274         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 275         wprintf("</CAPTION><TR>");
 276         for (a = 0; a <= 6; ++a) {
 277                 wprintf(
 278                                "<TD><A HREF=\"/validate&user=%s&WC->axlevel=%d\">%s</A></TD>\n",
 279                                urlesc(user), a, axdefs[a]);
 280         }
 281         wprintf("</TR></TABLE><CENTER><BR>\n");
 282         wDumpContent(1);
 283 }
 284
 285
 286
 287
 288
 289
 290 /*
 291  * Display form for registration.
 292  * (Set during_login to 1 if this registration is being performed during
 293  * new user login and will require chaining to the proper screen.)
 294  */
 295 void display_reg(int during_login)
 296 {
 297         char buf[256];
 298         int a;
 299
 300         wprintf("HTTP/1.0 200 OK\n");
 301         output_headers(1);
 302
 303         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=007700><TR><TD>");
 304         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 305         wprintf("<B>Enter registration info</B>\n");
 306         wprintf("</FONT></TD></TR></TABLE>\n");
 307
 308         wprintf("<CENTER>");
 309         serv_puts("MESG register");
 310         serv_gets(buf);
 311         if (buf[0] == '1')
 312                 fmout(NULL);
 313
 314         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 315         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 316
 317         serv_puts("GREG _SELF_");
 318         serv_gets(buf);
 319         if (buf[0] != '1') {
 320                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 321         } else {
 322
 323                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 324                 a = 0;
 325                 while (serv_gets(buf), strcmp(buf, "000")) {
 326                         ++a;
 327                         wprintf("<TR><TD>");
 328                         switch (a) {
 329                         case 3:
 330                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 331                                 break;
 332                         case 4:
 333                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 334                                 break;
 335                         case 5:
 336                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 337                                 break;
 338                         case 6:
 339                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 340                                 break;
 341                         case 7:
 342                                 wprintf("ZIP code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 343                                 break;
 344                         case 8:
 345                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 346                                 break;
 347                         case 10:
 348                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 349                                 break;
 350                         }
 351                         wprintf("</TD></TR>\n");
 352                 }
 353                 wprintf("</TABLE><P>");
 354         }
 355         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 356         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 357         wprintf("</CENTER>\n");
 358         wDumpContent(1);
 359 }
 360
 361 /*
 362  * register
 363  */
 364 void register_user(void)
 365 {
 366         char buf[256];
 367
 368         if (strcmp(bstr("action"), "Register")) {
 369                 display_error("Cancelled.  Registration was not saved.");
 370                 return;
 371         }
 372         serv_puts("REGI");
 373         serv_gets(buf);
 374         if (buf[0] != '4') {
 375                 display_error(&buf[4]);
 376         }
 377         serv_puts(bstr("realname"));
 378         serv_puts(bstr("address"));
 379         serv_puts(bstr("city"));
 380         serv_puts(bstr("state"));
 381         serv_puts(bstr("zip"));
 382         serv_puts(bstr("phone"));
 383         serv_puts(bstr("email"));
 384         serv_puts("000");
 385
 386         if (atoi(bstr("during_login"))) {
 387                 do_welcome();
 388         } else {
 389                 display_error("Registration information has been saved.");
 390         }
 391 }
 392
 393
 394
 395
 396
 397 /*
 398  * display form for changing your password
 399  */
 400 void display_changepw(void)
 401 {
 402         char buf[256];
 403
 404         wprintf("HTTP/1.0 200 OK\n");
 405         output_headers(1);
 406
 407         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=770000><TR><TD>");
 408         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 409         wprintf("<B>Change your password</B>\n");
 410         wprintf("</FONT></TD></TR></TABLE>\n");
 411
 412         wprintf("<CENTER>");
 413         serv_puts("MESG changepw");
 414         serv_gets(buf);
 415         if (buf[0] == '1')
 416                 fmout(NULL);
 417
 418         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 419         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 420         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 421         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 422         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 423         wprintf("</TABLE>\n");
 424         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 425         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 426         wprintf("</CENTER>\n");
 427         wDumpContent(1);
 428 }
 429
 430 /*
 431  * change password
 432  */
 433 void changepw(void)
 434 {
 435         char buf[256];
 436         char newpass1[32], newpass2[32];
 437
 438         if (strcmp(bstr("action"), "Change")) {
 439                 display_error("Cancelled.  Password was not changed.");
 440                 return;
 441         }
 442         strcpy(newpass1, bstr("newpass1"));
 443         strcpy(newpass2, bstr("newpass2"));
 444
 445         if (strcasecmp(newpass1, newpass2)) {
 446                 display_error("They don't match.  Password was not changed.");
 447                 return;
 448         }
 449         serv_printf("SETP %s", newpass1);
 450         serv_gets(buf);
 451         if (buf[0] == '2')
 452                 display_success(&buf[4]);
 453         else
 454                 display_error(&buf[4]);
 455 }