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 char *axdefs[] =
  32 {
  33         "Deleted",
  34         "New User",
  35         "Problem User",
  36         "Local User",
  37         "Network User",
  38         "Preferred User",
  39         "Aide"
  40 };
  41
  42 /*
  43  * Display the login screen
  44  */
  45 void display_login(char *mesg)
  46 {
  47         char buf[SIZ];
  48
  49         output_headers(3);
  50
  51         if (mesg != NULL) if (strlen(mesg) > 0) {
  52                 stresc(buf, mesg, 0);
  53                 svprintf("mesg", WCS_STRING, "%s", buf);
  54         }
  55
  56         svprintf("hello", WCS_SERVCMD, "MESG hello");
  57
  58         do_template("login");
  59
  60         clear_local_substs();
  61         wDumpContent(0);        /* No menu here; not logged in yet! */
  62 }
  63
  64
  65
  66
  67 /*
  68  * This function needs to get called whenever the session changes from
  69  * not-logged-in to logged-in, either by an explicit login by the user or
  70  * by a timed-out session automatically re-establishing with a little help
  71  * from the browser cookie.  Either way, we need to load access controls and
  72  * preferences from the server.
  73  */
  74 void become_logged_in(char *user, char *pass, char *serv_response)
  75 {
  76         WC->logged_in = 1;
  77         extract(WC->wc_username, &serv_response[4], 0);
  78         strcpy(WC->wc_password, pass);
  79         WC->axlevel = extract_int(&serv_response[4], 1);
  80         if (WC->axlevel >= 6) {
  81                 WC->is_aide = 1;
  82         }
  83         load_preferences();
  84 }
  85
  86
  87 void do_login(void)
  88 {
  89         char buf[SIZ];
  90         int need_regi = 0;
  91
  92
  93         if (!strcasecmp(bstr("action"), "Exit")) {
  94                 do_logout();
  95                 return;
  96         }
  97         if (!strcasecmp(bstr("action"), "Login")) {
  98                 serv_printf("USER %s", bstr("name"));
  99                 serv_gets(buf);
 100                 if (buf[0] == '3') {
 101                         serv_printf("PASS %s", bstr("pass"));
 102                         serv_gets(buf);
 103                         if (buf[0] == '2') {
 104                                 become_logged_in(bstr("name"),
 105                                                  bstr("pass"), buf);
 106                         } else {
 107                                 display_login(&buf[4]);
 108                                 return;
 109                         }
 110                 } else {
 111                         display_login(&buf[4]);
 112                         return;
 113                 }
 114         }
 115         if (!strcasecmp(bstr("action"), "New User")) {
 116                 serv_printf("NEWU %s", bstr("name"));
 117                 serv_gets(buf);
 118                 if (buf[0] == '2') {
 119                         become_logged_in(bstr("name"), bstr("pass"), buf);
 120                         serv_printf("SETP %s", bstr("pass"));
 121                         serv_gets(buf);
 122                 } else {
 123                         display_login(&buf[4]);
 124                         return;
 125                 }
 126         }
 127         if (WC->logged_in) {
 128                 serv_puts("CHEK");
 129                 serv_gets(buf);
 130                 if (buf[0] == '2') {
 131                         WC->new_mail = extract_int(&buf[4], 0);
 132                         need_regi = extract_int(&buf[4], 1);
 133                         WC->need_vali = extract_int(&buf[4], 2);
 134                         extract(WC->cs_inet_email, &buf[4], 3);
 135                 }
 136                 if (need_regi) {
 137                         display_reg(1);
 138                 } else {
 139                         do_welcome();
 140                 }
 141         } else {
 142                 display_login("Your password was not accepted.");
 143         }
 144
 145 }
 146
 147 void do_welcome(void)
 148 {
 149         char startpage[SIZ];
 150
 151         get_preference("startpage", startpage);
 152         if (strlen(startpage)==0) {
 153                 strcpy(startpage, "/dotskip&room=_BASEROOM_");
 154                 set_preference("startpage", startpage);
 155         }
 156
 157         svprintf("STARTPAGE", WCS_STRING, startpage);
 158
 159         do_template("mainframeset");
 160         clear_local_substs();
 161 }
 162
 163
 164 /*
 165  * Disconnect from the Citadel server, and end this WebCit session
 166  */
 167 void end_webcit_session(void) {
 168         serv_puts("QUIT");
 169         WC->killthis = 1;
 170         /* close() of citadel socket will be done by do_housekeeping() */
 171 }
 172
 173
 174 void do_logout(void)
 175 {
 176         char buf[SIZ];
 177
 178         strcpy(WC->wc_username, "");
 179         strcpy(WC->wc_password, "");
 180         strcpy(WC->wc_roomname, "");
 181
 182         output_headers(2);      /* note "2" causes cookies to be unset */
 183
 184         wprintf("<CENTER>");
 185         serv_puts("MESG goodbye");
 186         serv_gets(buf);
 187
 188         if (WC->serv_sock >= 0) {
 189                 if (buf[0] == '1') {
 190                         fmout(NULL);
 191                 } else {
 192                         wprintf("Goodbye\n");
 193                 }
 194         }
 195         else {
 196                 wprintf("This program was unable to connect or stay "
 197                         "connected to the Citadel server.  Please report "
 198                         "this problem to your system administrator."
 199                 );
 200         }
 201
 202         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 203                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 204                 "</CENTER>\n");
 205         wDumpContent(2);
 206         end_webcit_session();
 207 }
 208
 209
 210
 211 /*
 212  * validate new users
 213  */
 214 void validate(void)
 215 {
 216         char cmd[SIZ];
 217         char user[SIZ];
 218         char buf[SIZ];
 219         int a;
 220
 221         output_headers(3);
 222
 223         strcpy(buf, bstr("user"));
 224         if (strlen(buf) > 0)
 225                 if (strlen(bstr("WC->axlevel")) > 0) {
 226                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 227                         serv_gets(buf);
 228                         if (buf[0] != '2') {
 229                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 230                         }
 231                 }
 232         serv_puts("GNUR");
 233         serv_gets(buf);
 234
 235         if (buf[0] != '3') {
 236                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 237                 wDumpContent(1);
 238                 return;
 239         }
 240         strcpy(user, &buf[4]);
 241         serv_printf("GREG %s", user);
 242         serv_gets(cmd);
 243         if (cmd[0] == '1') {
 244                 a = 0;
 245                 do {
 246                         serv_gets(buf);
 247                         ++a;
 248                         if (a == 1)
 249                                 wprintf("User #%s<BR><H1>%s</H1>",
 250                                         buf, &cmd[4]);
 251                         if (a == 2)
 252                                 wprintf("PW: %s<BR>\n", buf);
 253                         if (a == 3)
 254                                 wprintf("%s<BR>\n", buf);
 255                         if (a == 4)
 256                                 wprintf("%s<BR>\n", buf);
 257                         if (a == 5)
 258                                 wprintf("%s, ", buf);
 259                         if (a == 6)
 260                                 wprintf("%s ", buf);
 261                         if (a == 7)
 262                                 wprintf("%s<BR>\n", buf);
 263                         if (a == 8)
 264                                 wprintf("%s<BR>\n", buf);
 265                         if (a == 9)
 266                                 wprintf("Current access level: %d (%s)\n",
 267                                         atoi(buf), axdefs[atoi(buf)]);
 268                 } while (strcmp(buf, "000"));
 269         } else {
 270                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 271         }
 272
 273         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 274         wprintf("</CAPTION><TR>");
 275         for (a = 0; a <= 6; ++a) {
 276                 wprintf("<TD><A HREF=\"/validate&user=");
 277                 urlescputs(user);
 278                 wprintf("&WC->axlevel=%d\">%s</A></TD>\n",
 279                         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[SIZ];
 298         int a;
 299
 300         output_headers(3);
 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/postal 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                         case 11:
 350                                 wprintf("Country:</TD><TD><INPUT TYPE=\"text\" NAME=\"country\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 351                                 break;
 352                         }
 353                         wprintf("</TD></TR>\n");
 354                 }
 355                 wprintf("</TABLE><P>");
 356         }
 357         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 358         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 359         wprintf("</CENTER>\n");
 360         wDumpContent(1);
 361 }
 362
 363 /*
 364  * register
 365  */
 366 void register_user(void)
 367 {
 368         char buf[SIZ];
 369
 370         if (strcmp(bstr("action"), "Register")) {
 371                 display_error("Cancelled.  Registration was not saved.");
 372                 return;
 373         }
 374         serv_puts("REGI");
 375         serv_gets(buf);
 376         if (buf[0] != '4') {
 377                 display_error(&buf[4]);
 378         }
 379         serv_puts(bstr("realname"));
 380         serv_puts(bstr("address"));
 381         serv_puts(bstr("city"));
 382         serv_puts(bstr("state"));
 383         serv_puts(bstr("zip"));
 384         serv_puts(bstr("phone"));
 385         serv_puts(bstr("email"));
 386         serv_puts(bstr("country"));
 387         serv_puts("000");
 388
 389         if (atoi(bstr("during_login"))) {
 390                 do_welcome();
 391         } else {
 392                 display_success("Registration information has been saved.");
 393         }
 394 }
 395
 396
 397
 398
 399
 400 /*
 401  * display form for changing your password
 402  */
 403 void display_changepw(void)
 404 {
 405         char buf[SIZ];
 406
 407         output_headers(3);
 408
 409         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=770000><TR><TD>");
 410         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 411         wprintf("<B>Change your password</B>\n");
 412         wprintf("</FONT></TD></TR></TABLE>\n");
 413
 414         wprintf("<CENTER>");
 415         serv_puts("MESG changepw");
 416         serv_gets(buf);
 417         if (buf[0] == '1')
 418                 fmout(NULL);
 419
 420         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 421         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 422         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 423         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 424         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 425         wprintf("</TABLE>\n");
 426         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 427         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 428         wprintf("</CENTER>\n");
 429         wDumpContent(1);
 430 }
 431
 432 /*
 433  * change password
 434  */
 435 void changepw(void)
 436 {
 437         char buf[SIZ];
 438         char newpass1[32], newpass2[32];
 439
 440         if (strcmp(bstr("action"), "Change")) {
 441                 display_error("Cancelled.  Password was not changed.");
 442                 return;
 443         }
 444         strcpy(newpass1, bstr("newpass1"));
 445         strcpy(newpass2, bstr("newpass2"));
 446
 447         if (strcasecmp(newpass1, newpass2)) {
 448                 display_error("They don't match.  Password was not changed.");
 449                 return;
 450         }
 451         serv_printf("SETP %s", newpass1);
 452         serv_gets(buf);
 453         if (buf[0] == '2')
 454                 display_success(&buf[4]);
 455         else
 456                 display_error(&buf[4]);
 457 }