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         }
 123         if (!strcasecmp(bstr("action"), "Login")) {
 124                 serv_printf("USER %s", bstr("name"));
 125                 serv_gets(buf);
 126                 if (buf[0] == '3') {
 127                         serv_printf("PASS %s", bstr("pass"));
 128                         serv_gets(buf);
 129                         if (buf[0] == '2') {
 130                                 become_logged_in(bstr("name"),
 131                                                  bstr("pass"), buf);
 132                         } else {
 133                                 display_login(&buf[4]);
 134                                 return;
 135                         }
 136                 } else {
 137                         display_login(&buf[4]);
 138                         return;
 139                 }
 140         }
 141         if (!strcasecmp(bstr("action"), "New User")) {
 142                 serv_printf("NEWU %s", bstr("name"));
 143                 serv_gets(buf);
 144                 if (buf[0] == '2') {
 145                         become_logged_in(bstr("name"), bstr("pass"), buf);
 146                         serv_printf("SETP %s", bstr("pass"));
 147                         serv_gets(buf);
 148                 } else {
 149                         display_login(&buf[4]);
 150                         return;
 151                 }
 152         }
 153         if (WC->logged_in) {
 154                 serv_puts("CHEK");
 155                 serv_gets(buf);
 156                 if (buf[0] == '2') {
 157                         WC->new_mail = extract_int(&buf[4], 0);
 158                         need_regi = extract_int(&buf[4], 1);
 159                         WC->need_vali = extract_int(&buf[4], 2);
 160                 }
 161                 if (need_regi) {
 162                         display_reg(1);
 163                 } else {
 164                         do_welcome();
 165                 }
 166         } else {
 167                 display_login("Your password was not accepted.");
 168         }
 169
 170 }
 171
 172 void do_welcome(void)
 173 {
 174         smart_goto("_BASEROOM_");
 175 }
 176
 177
 178 void do_logout(void)
 179 {
 180         char buf[256];
 181
 182         strcpy(WC->wc_username, "");
 183         strcpy(WC->wc_password, "");
 184         strcpy(WC->wc_roomname, "");
 185
 186         output_headers(2);      /* note "2" causes cookies to be unset */
 187
 188         wprintf("<CENTER>");
 189         serv_puts("MESG goodbye");
 190         serv_gets(buf);
 191
 192         if (buf[0] == '1')
 193                 fmout(NULL);
 194         else
 195                 wprintf("Goodbye\n");
 196
 197         wprintf("<HR><A HREF=\"/\">Log in again</A></CENTER>\n");
 198         wDumpContent(2);
 199         serv_puts("QUIT");
 200         close(WC->serv_sock);
 201         WC->serv_sock = (-1);
 202         WC->killthis = 1;
 203 }
 204
 205
 206
 207
 208
 209 /*
 210  * validate new users
 211  */
 212 void validate(void)
 213 {
 214         char cmd[256];
 215         char user[256];
 216         char buf[256];
 217         int a;
 218
 219         output_headers(1);
 220
 221         strcpy(buf, bstr("user"));
 222         if (strlen(buf) > 0)
 223                 if (strlen(bstr("WC->axlevel")) > 0) {
 224                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 225                         serv_gets(buf);
 226                         if (buf[0] != '2') {
 227                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 228                         }
 229                 }
 230         serv_puts("GNUR");
 231         serv_gets(buf);
 232
 233         if (buf[0] != '3') {
 234                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 235                 wDumpContent(1);
 236                 return;
 237         }
 238         strcpy(user, &buf[4]);
 239         serv_printf("GREG %s", user);
 240         serv_gets(cmd);
 241         if (cmd[0] == '1') {
 242                 a = 0;
 243                 do {
 244                         serv_gets(buf);
 245                         ++a;
 246                         if (a == 1)
 247                                 wprintf("User #%s<BR><H1>%s</H1>",
 248                                         buf, &cmd[4]);
 249                         if (a == 2)
 250                                 wprintf("PW: %s<BR>\n", buf);
 251                         if (a == 3)
 252                                 wprintf("%s<BR>\n", buf);
 253                         if (a == 4)
 254                                 wprintf("%s<BR>\n", buf);
 255                         if (a == 5)
 256                                 wprintf("%s, ", buf);
 257                         if (a == 6)
 258                                 wprintf("%s ", buf);
 259                         if (a == 7)
 260                                 wprintf("%s<BR>\n", buf);
 261                         if (a == 8)
 262                                 wprintf("%s<BR>\n", buf);
 263                         if (a == 9)
 264                                 wprintf("Current access level: %d (%s)\n",
 265                                         atoi(buf), axdefs[atoi(buf)]);
 266                 } while (strcmp(buf, "000"));
 267         } else {
 268                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 269         }
 270
 271         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 272         wprintf("</CAPTION><TR>");
 273         for (a = 0; a <= 6; ++a) {
 274                 wprintf(
 275                                "<TD><A HREF=\"/validate&user=%s&WC->axlevel=%d\">%s</A></TD>\n",
 276                                urlesc(user), a, axdefs[a]);
 277         }
 278         wprintf("</TR></TABLE><CENTER><BR>\n");
 279         wDumpContent(1);
 280 }
 281
 282
 283
 284
 285
 286
 287 /*
 288  * Display form for registration.
 289  * (Set during_login to 1 if this registration is being performed during
 290  * new user login and will require chaining to the proper screen.)
 291  */
 292 void display_reg(int during_login)
 293 {
 294         char buf[256];
 295         int a;
 296
 297         output_headers(1);
 298
 299         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=007700><TR><TD>");
 300         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 301         wprintf("<B>Enter registration info</B>\n");
 302         wprintf("</FONT></TD></TR></TABLE>\n");
 303
 304         wprintf("<CENTER>");
 305         serv_puts("MESG register");
 306         serv_gets(buf);
 307         if (buf[0] == '1')
 308                 fmout(NULL);
 309
 310         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 311         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 312
 313         serv_puts("GREG _SELF_");
 314         serv_gets(buf);
 315         if (buf[0] != '1') {
 316                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 317         } else {
 318
 319                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 320                 a = 0;
 321                 while (serv_gets(buf), strcmp(buf, "000")) {
 322                         ++a;
 323                         wprintf("<TR><TD>");
 324                         switch (a) {
 325                         case 3:
 326                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 327                                 break;
 328                         case 4:
 329                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 330                                 break;
 331                         case 5:
 332                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 333                                 break;
 334                         case 6:
 335                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 336                                 break;
 337                         case 7:
 338                                 wprintf("ZIP code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 339                                 break;
 340                         case 8:
 341                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 342                                 break;
 343                         case 10:
 344                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 345                                 break;
 346                         }
 347                         wprintf("</TD></TR>\n");
 348                 }
 349                 wprintf("</TABLE><P>");
 350         }
 351         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 352         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 353         wprintf("</CENTER>\n");
 354         wDumpContent(1);
 355 }
 356
 357 /*
 358  * register
 359  */
 360 void register_user(void)
 361 {
 362         char buf[256];
 363
 364         if (strcmp(bstr("action"), "Register")) {
 365                 display_error("Cancelled.  Registration was not saved.");
 366                 return;
 367         }
 368         serv_puts("REGI");
 369         serv_gets(buf);
 370         if (buf[0] != '4') {
 371                 display_error(&buf[4]);
 372         }
 373         serv_puts(bstr("realname"));
 374         serv_puts(bstr("address"));
 375         serv_puts(bstr("city"));
 376         serv_puts(bstr("state"));
 377         serv_puts(bstr("zip"));
 378         serv_puts(bstr("phone"));
 379         serv_puts(bstr("email"));
 380         serv_puts("000");
 381
 382         if (atoi(bstr("during_login"))) {
 383                 do_welcome();
 384         } else {
 385                 display_error("Registration information has been saved.");
 386         }
 387 }
 388
 389
 390
 391
 392
 393 /*
 394  * display form for changing your password
 395  */
 396 void display_changepw(void)
 397 {
 398         char buf[256];
 399
 400         output_headers(1);
 401
 402         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=770000><TR><TD>");
 403         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 404         wprintf("<B>Change your password</B>\n");
 405         wprintf("</FONT></TD></TR></TABLE>\n");
 406
 407         wprintf("<CENTER>");
 408         serv_puts("MESG changepw");
 409         serv_gets(buf);
 410         if (buf[0] == '1')
 411                 fmout(NULL);
 412
 413         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 414         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 415         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 416         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 417         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 418         wprintf("</TABLE>\n");
 419         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 420         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 421         wprintf("</CENTER>\n");
 422         wDumpContent(1);
 423 }
 424
 425 /*
 426  * change password
 427  */
 428 void changepw(void)
 429 {
 430         char buf[256];
 431         char newpass1[32], newpass2[32];
 432
 433         if (strcmp(bstr("action"), "Change")) {
 434                 display_error("Cancelled.  Password was not changed.");
 435                 return;
 436         }
 437         strcpy(newpass1, bstr("newpass1"));
 438         strcpy(newpass2, bstr("newpass2"));
 439
 440         if (strcasecmp(newpass1, newpass2)) {
 441                 display_error("They don't match.  Password was not changed.");
 442                 return;
 443         }
 444         serv_printf("SETP %s", newpass1);
 445         serv_gets(buf);
 446         if (buf[0] == '2')
 447                 display_success(&buf[4]);
 448         else
 449                 display_error(&buf[4]);
 450 }