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                 }
 135                 if (need_regi) {
 136                         display_reg(1);
 137                 } else {
 138                         do_welcome();
 139                 }
 140         } else {
 141                 display_login("Your password was not accepted.");
 142         }
 143
 144 }
 145
 146 void do_welcome(void)
 147 {
 148         char startpage[SIZ];
 149
 150         get_preference("startpage", startpage);
 151         if (strlen(startpage)==0) {
 152                 strcpy(startpage, "/dotskip&room=_BASEROOM_");
 153                 set_preference("startpage", startpage);
 154         }
 155
 156         svprintf("STARTPAGE", WCS_STRING, startpage);
 157
 158         do_template("mainframeset");
 159         clear_local_substs();
 160 }
 161
 162
 163 /*
 164  * Disconnect from the Citadel server, and end this WebCit session
 165  */
 166 void end_webcit_session(void) {
 167         serv_puts("QUIT");
 168         WC->killthis = 1;
 169         /* close() of citadel socket will be done by do_housekeeping() */
 170 }
 171
 172
 173 void do_logout(void)
 174 {
 175         char buf[SIZ];
 176
 177         strcpy(WC->wc_username, "");
 178         strcpy(WC->wc_password, "");
 179         strcpy(WC->wc_roomname, "");
 180
 181         output_headers(2);      /* note "2" causes cookies to be unset */
 182
 183         wprintf("<CENTER>");
 184         serv_puts("MESG goodbye");
 185         serv_gets(buf);
 186
 187         if (WC->serv_sock >= 0) {
 188                 if (buf[0] == '1') {
 189                         fmout(NULL);
 190                 } else {
 191                         wprintf("Goodbye\n");
 192                 }
 193         }
 194         else {
 195                 wprintf("This program was unable to connect or stay "
 196                         "connected to the Citadel server.  Please report "
 197                         "this problem to your system administrator."
 198                 );
 199         }
 200
 201         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 202                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 203                 "</CENTER>\n");
 204         wDumpContent(2);
 205         end_webcit_session();
 206 }
 207
 208
 209
 210 /*
 211  * validate new users
 212  */
 213 void validate(void)
 214 {
 215         char cmd[SIZ];
 216         char user[SIZ];
 217         char buf[SIZ];
 218         int a;
 219
 220         output_headers(3);
 221
 222         strcpy(buf, bstr("user"));
 223         if (strlen(buf) > 0)
 224                 if (strlen(bstr("WC->axlevel")) > 0) {
 225                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 226                         serv_gets(buf);
 227                         if (buf[0] != '2') {
 228                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 229                         }
 230                 }
 231         serv_puts("GNUR");
 232         serv_gets(buf);
 233
 234         if (buf[0] != '3') {
 235                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 236                 wDumpContent(1);
 237                 return;
 238         }
 239         strcpy(user, &buf[4]);
 240         serv_printf("GREG %s", user);
 241         serv_gets(cmd);
 242         if (cmd[0] == '1') {
 243                 a = 0;
 244                 do {
 245                         serv_gets(buf);
 246                         ++a;
 247                         if (a == 1)
 248                                 wprintf("User #%s<BR><H1>%s</H1>",
 249                                         buf, &cmd[4]);
 250                         if (a == 2)
 251                                 wprintf("PW: %s<BR>\n", buf);
 252                         if (a == 3)
 253                                 wprintf("%s<BR>\n", buf);
 254                         if (a == 4)
 255                                 wprintf("%s<BR>\n", buf);
 256                         if (a == 5)
 257                                 wprintf("%s, ", buf);
 258                         if (a == 6)
 259                                 wprintf("%s ", buf);
 260                         if (a == 7)
 261                                 wprintf("%s<BR>\n", buf);
 262                         if (a == 8)
 263                                 wprintf("%s<BR>\n", buf);
 264                         if (a == 9)
 265                                 wprintf("Current access level: %d (%s)\n",
 266                                         atoi(buf), axdefs[atoi(buf)]);
 267                 } while (strcmp(buf, "000"));
 268         } else {
 269                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 270         }
 271
 272         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 273         wprintf("</CAPTION><TR>");
 274         for (a = 0; a <= 6; ++a) {
 275                 wprintf("<TD><A HREF=\"/validate&user=");
 276                 urlescputs(user);
 277                 wprintf("&WC->axlevel=%d\">%s</A></TD>\n",
 278                         a, axdefs[a]);
 279         }
 280         wprintf("</TR></TABLE><CENTER><BR>\n");
 281         wDumpContent(1);
 282 }
 283
 284
 285
 286
 287
 288
 289 /*
 290  * Display form for registration.
 291  * (Set during_login to 1 if this registration is being performed during
 292  * new user login and will require chaining to the proper screen.)
 293  */
 294 void display_reg(int during_login)
 295 {
 296         char buf[SIZ];
 297         int a;
 298
 299         output_headers(3);
 300
 301         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>");
 302         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 303         wprintf("<B>Enter registration info</B>\n");
 304         wprintf("</FONT></TD></TR></TABLE>\n");
 305
 306         wprintf("<CENTER>");
 307         serv_puts("MESG register");
 308         serv_gets(buf);
 309         if (buf[0] == '1')
 310                 fmout(NULL);
 311
 312         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 313         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 314
 315         serv_puts("GREG _SELF_");
 316         serv_gets(buf);
 317         if (buf[0] != '1') {
 318                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 319         } else {
 320
 321                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 322                 a = 0;
 323                 while (serv_gets(buf), strcmp(buf, "000")) {
 324                         ++a;
 325                         wprintf("<TR><TD>");
 326                         switch (a) {
 327                         case 3:
 328                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 329                                 break;
 330                         case 4:
 331                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 332                                 break;
 333                         case 5:
 334                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 335                                 break;
 336                         case 6:
 337                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 338                                 break;
 339                         case 7:
 340                                 wprintf("ZIP/postal code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 341                                 break;
 342                         case 8:
 343                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 344                                 break;
 345                         case 10:
 346                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 347                                 break;
 348                         case 11:
 349                                 wprintf("Country:</TD><TD><INPUT TYPE=\"text\" NAME=\"country\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 350                                 break;
 351                         }
 352                         wprintf("</TD></TR>\n");
 353                 }
 354                 wprintf("</TABLE><P>");
 355         }
 356         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 357         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 358         wprintf("</CENTER>\n");
 359         wDumpContent(1);
 360 }
 361
 362 /*
 363  * register
 364  */
 365 void register_user(void)
 366 {
 367         char buf[SIZ];
 368
 369         if (strcmp(bstr("action"), "Register")) {
 370                 display_error("Cancelled.  Registration was not saved.");
 371                 return;
 372         }
 373         serv_puts("REGI");
 374         serv_gets(buf);
 375         if (buf[0] != '4') {
 376                 display_error(&buf[4]);
 377         }
 378         serv_puts(bstr("realname"));
 379         serv_puts(bstr("address"));
 380         serv_puts(bstr("city"));
 381         serv_puts(bstr("state"));
 382         serv_puts(bstr("zip"));
 383         serv_puts(bstr("phone"));
 384         serv_puts(bstr("email"));
 385         serv_puts(bstr("country"));
 386         serv_puts("000");
 387
 388         if (atoi(bstr("during_login"))) {
 389                 do_welcome();
 390         } else {
 391                 display_success("Registration information has been saved.");
 392         }
 393 }
 394
 395
 396
 397
 398
 399 /*
 400  * display form for changing your password
 401  */
 402 void display_changepw(void)
 403 {
 404         char buf[SIZ];
 405
 406         output_headers(3);
 407
 408         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=770000><TR><TD>");
 409         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 410         wprintf("<B>Change your password</B>\n");
 411         wprintf("</FONT></TD></TR></TABLE>\n");
 412
 413         wprintf("<CENTER>");
 414         serv_puts("MESG changepw");
 415         serv_gets(buf);
 416         if (buf[0] == '1')
 417                 fmout(NULL);
 418
 419         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 420         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 421         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 422         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 423         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 424         wprintf("</TABLE>\n");
 425         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 426         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 427         wprintf("</CENTER>\n");
 428         wDumpContent(1);
 429 }
 430
 431 /*
 432  * change password
 433  */
 434 void changepw(void)
 435 {
 436         char buf[SIZ];
 437         char newpass1[32], newpass2[32];
 438
 439         if (strcmp(bstr("action"), "Change")) {
 440                 display_error("Cancelled.  Password was not changed.");
 441                 return;
 442         }
 443         strcpy(newpass1, bstr("newpass1"));
 444         strcpy(newpass2, bstr("newpass2"));
 445
 446         if (strcasecmp(newpass1, newpass2)) {
 447                 display_error("They don't match.  Password was not changed.");
 448                 return;
 449         }
 450         serv_printf("SETP %s", newpass1);
 451         serv_gets(buf);
 452         if (buf[0] == '2')
 453                 display_success(&buf[4]);
 454         else
 455                 display_error(&buf[4]);
 456 }