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