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         output_headers(3);
  51
  52         /* Da banner */
  53         wprintf("<CENTER><TABLE border=0 width=100%><TR><TD>\n");
  54         wprintf("<IMG SRC=\"/image&name=hello\">");
  55         wprintf("</TD><TD><CENTER>\n");
  56
  57         if (mesg != NULL) {
  58                 wprintf("<font size=+1><b>%s</b></font>", mesg);
  59         } else {
  60                 serv_puts("MESG hello");
  61                 serv_gets(buf);
  62                 if (buf[0] == '1')
  63                         fmout(NULL);
  64         }
  65
  66         wprintf("</CENTER></TD></TR></TABLE></CENTER>\n");
  67         wprintf("<HR>\n");
  68
  69         /* Da login box */
  70         wprintf("<CENTER><FORM ACTION=\"/login\" METHOD=\"POST\">\n");
  71         wprintf("<TABLE border><TR>\n");
  72         wprintf("<TD>User Name:</TD>\n");
  73         wprintf("<TD><INPUT TYPE=\"text\" NAME=\"name\" MAXLENGTH=\"25\">\n");
  74         wprintf("</TD></TR><TR>\n");
  75         wprintf("<TD>Password:</TD>\n");
  76         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"pass\" MAXLENGTH=\"20\"></TD>\n");
  77         wprintf("</TR></TABLE>\n");
  78         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Login\">\n");
  79         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"New User\">\n");
  80         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Exit\">\n");
  81
  82         /* Da instructions */
  83         wprintf("<LI><EM>If you already have an account on %s,",
  84                 serv_info.serv_humannode);
  85         wprintf("</EM> enter your user name\n");
  86         wprintf("and password and click \"<TT>Login</TT>.\"<BR>\n");
  87         wprintf("<LI><EM>If you are a new user,</EM>\n");
  88         wprintf("enter the name and password you wish to use, and click\n");
  89         wprintf("\"New User.\"<BR><LI>");
  90         wprintf("<EM>Please log off properly when finished.</EM>");
  91         wprintf("<LI>You must use a browser that supports <i>cookies</i>.<BR>\n");
  92         wprintf("</EM></UL>\n");
  93
  94         wDumpContent(0);        /* No menu here; not logged in yet! */
  95 }
  96
  97
  98
  99
 100 /*
 101  * This function needs to get called whenever a PASS or NEWU succeeds.
 102  */
 103 void become_logged_in(char *user, char *pass, char *serv_response)
 104 {
 105         WC->logged_in = 1;
 106         extract(WC->wc_username, &serv_response[4], 0);
 107         strcpy(WC->wc_password, pass);
 108         WC->axlevel = extract_int(&serv_response[4], 1);
 109         if (WC->axlevel >= 6)
 110                 WC->is_aide = 1;
 111 }
 112
 113
 114 void do_login(void)
 115 {
 116         char buf[256];
 117         int need_regi = 0;
 118
 119
 120         if (!strcasecmp(bstr("action"), "Exit")) {
 121                 do_logout();
 122                 return;
 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         output_headers(2);      /* note "2" causes cookies to be unset */
 188
 189         wprintf("<CENTER>");
 190         serv_puts("MESG goodbye");
 191         serv_gets(buf);
 192
 193         if (buf[0] == '1')
 194                 fmout(NULL);
 195         else
 196                 wprintf("Goodbye\n");
 197
 198         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 199                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 200                 "</CENTER>\n");
 201         wDumpContent(2);
 202         serv_puts("QUIT");
 203         close(WC->serv_sock);
 204         WC->serv_sock = (-1);
 205         WC->killthis = 1;
 206 }
 207
 208
 209
 210
 211
 212 /*
 213  * validate new users
 214  */
 215 void validate(void)
 216 {
 217         char cmd[256];
 218         char user[256];
 219         char buf[256];
 220         int a;
 221
 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         output_headers(1);
 301
 302         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=007700><TR><TD>");
 303         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 304         wprintf("<B>Enter registration info</B>\n");
 305         wprintf("</FONT></TD></TR></TABLE>\n");
 306
 307         wprintf("<CENTER>");
 308         serv_puts("MESG register");
 309         serv_gets(buf);
 310         if (buf[0] == '1')
 311                 fmout(NULL);
 312
 313         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 314         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 315
 316         serv_puts("GREG _SELF_");
 317         serv_gets(buf);
 318         if (buf[0] != '1') {
 319                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 320         } else {
 321
 322                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 323                 a = 0;
 324                 while (serv_gets(buf), strcmp(buf, "000")) {
 325                         ++a;
 326                         wprintf("<TR><TD>");
 327                         switch (a) {
 328                         case 3:
 329                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 330                                 break;
 331                         case 4:
 332                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 333                                 break;
 334                         case 5:
 335                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 336                                 break;
 337                         case 6:
 338                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 339                                 break;
 340                         case 7:
 341                                 wprintf("ZIP code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 342                                 break;
 343                         case 8:
 344                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 345                                 break;
 346                         case 10:
 347                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 348                                 break;
 349                         }
 350                         wprintf("</TD></TR>\n");
 351                 }
 352                 wprintf("</TABLE><P>");
 353         }
 354         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 355         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 356         wprintf("</CENTER>\n");
 357         wDumpContent(1);
 358 }
 359
 360 /*
 361  * register
 362  */
 363 void register_user(void)
 364 {
 365         char buf[256];
 366
 367         if (strcmp(bstr("action"), "Register")) {
 368                 display_error("Cancelled.  Registration was not saved.");
 369                 return;
 370         }
 371         serv_puts("REGI");
 372         serv_gets(buf);
 373         if (buf[0] != '4') {
 374                 display_error(&buf[4]);
 375         }
 376         serv_puts(bstr("realname"));
 377         serv_puts(bstr("address"));
 378         serv_puts(bstr("city"));
 379         serv_puts(bstr("state"));
 380         serv_puts(bstr("zip"));
 381         serv_puts(bstr("phone"));
 382         serv_puts(bstr("email"));
 383         serv_puts("000");
 384
 385         if (atoi(bstr("during_login"))) {
 386                 do_welcome();
 387         } else {
 388                 display_error("Registration information has been saved.");
 389         }
 390 }
 391
 392
 393
 394
 395
 396 /*
 397  * display form for changing your password
 398  */
 399 void display_changepw(void)
 400 {
 401         char buf[256];
 402
 403         output_headers(1);
 404
 405         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=770000><TR><TD>");
 406         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 407         wprintf("<B>Change your password</B>\n");
 408         wprintf("</FONT></TD></TR></TABLE>\n");
 409
 410         wprintf("<CENTER>");
 411         serv_puts("MESG changepw");
 412         serv_gets(buf);
 413         if (buf[0] == '1')
 414                 fmout(NULL);
 415
 416         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 417         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 418         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 419         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 420         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 421         wprintf("</TABLE>\n");
 422         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 423         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 424         wprintf("</CENTER>\n");
 425         wDumpContent(1);
 426 }
 427
 428 /*
 429  * change password
 430  */
 431 void changepw(void)
 432 {
 433         char buf[256];
 434         char newpass1[32], newpass2[32];
 435
 436         if (strcmp(bstr("action"), "Change")) {
 437                 display_error("Cancelled.  Password was not changed.");
 438                 return;
 439         }
 440         strcpy(newpass1, bstr("newpass1"));
 441         strcpy(newpass2, bstr("newpass2"));
 442
 443         if (strcasecmp(newpass1, newpass2)) {
 444                 display_error("They don't match.  Password was not changed.");
 445                 return;
 446         }
 447         serv_printf("SETP %s", newpass1);
 448         serv_gets(buf);
 449         if (buf[0] == '2')
 450                 display_success(&buf[4]);
 451         else
 452                 display_error(&buf[4]);
 453 }