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         stresc(buf, serv_info.serv_humannode, 1);
  57         svprintf("humannode", WCS_STRING, "%s", buf);
  58
  59         svprintf("hello", WCS_SERVCMD, "MESG hello");
  60
  61         do_template("login.html");
  62
  63         clear_local_substs();
  64         wDumpContent(0);        /* No menu here; not logged in yet! */
  65 }
  66
  67
  68
  69
  70 /*
  71  * This function needs to get called whenever the session changes from
  72  * not-logged-in to logged-in, either by an explicit login by the user or
  73  * by a timed-out session automatically re-establishing with a little help
  74  * from the browser cookie.  Either way, we need to load access controls and
  75  * preferences from the server.
  76  */
  77 void become_logged_in(char *user, char *pass, char *serv_response)
  78 {
  79         WC->logged_in = 1;
  80         extract(WC->wc_username, &serv_response[4], 0);
  81         strcpy(WC->wc_password, pass);
  82         WC->axlevel = extract_int(&serv_response[4], 1);
  83         if (WC->axlevel >= 6) {
  84                 WC->is_aide = 1;
  85         }
  86         load_preferences();
  87 }
  88
  89
  90 void do_login(void)
  91 {
  92         char buf[SIZ];
  93         int need_regi = 0;
  94
  95
  96         if (!strcasecmp(bstr("action"), "Exit")) {
  97                 do_logout();
  98                 return;
  99         }
 100         if (!strcasecmp(bstr("action"), "Login")) {
 101                 serv_printf("USER %s", bstr("name"));
 102                 serv_gets(buf);
 103                 if (buf[0] == '3') {
 104                         serv_printf("PASS %s", bstr("pass"));
 105                         serv_gets(buf);
 106                         if (buf[0] == '2') {
 107                                 become_logged_in(bstr("name"),
 108                                                  bstr("pass"), buf);
 109                         } else {
 110                                 display_login(&buf[4]);
 111                                 return;
 112                         }
 113                 } else {
 114                         display_login(&buf[4]);
 115                         return;
 116                 }
 117         }
 118         if (!strcasecmp(bstr("action"), "New User")) {
 119                 serv_printf("NEWU %s", bstr("name"));
 120                 serv_gets(buf);
 121                 if (buf[0] == '2') {
 122                         become_logged_in(bstr("name"), bstr("pass"), buf);
 123                         serv_printf("SETP %s", bstr("pass"));
 124                         serv_gets(buf);
 125                 } else {
 126                         display_login(&buf[4]);
 127                         return;
 128                 }
 129         }
 130         if (WC->logged_in) {
 131                 serv_puts("CHEK");
 132                 serv_gets(buf);
 133                 if (buf[0] == '2') {
 134                         WC->new_mail = extract_int(&buf[4], 0);
 135                         need_regi = extract_int(&buf[4], 1);
 136                         WC->need_vali = extract_int(&buf[4], 2);
 137                 }
 138                 if (need_regi) {
 139                         display_reg(1);
 140                 } else {
 141                         do_welcome();
 142                 }
 143         } else {
 144                 display_login("Your password was not accepted.");
 145         }
 146
 147 }
 148
 149 void do_welcome(void)
 150 {
 151         http_redirect("/static/mainframeset.html");
 152 }
 153
 154
 155 /*
 156  * Disconnect from the Citadel server, and end this WebCit session
 157  */
 158 void end_webcit_session(void) {
 159         serv_puts("QUIT");
 160         WC->killthis = 1;
 161         /* close() of citadel socket will be done by do_housekeeping() */
 162 }
 163
 164
 165 void do_logout(void)
 166 {
 167         char buf[SIZ];
 168
 169         strcpy(WC->wc_username, "");
 170         strcpy(WC->wc_password, "");
 171         strcpy(WC->wc_roomname, "");
 172
 173         output_headers(2);      /* note "2" causes cookies to be unset */
 174
 175         wprintf("<CENTER>");
 176         serv_puts("MESG goodbye");
 177         serv_gets(buf);
 178
 179         if (buf[0] == '1')
 180                 fmout(NULL);
 181         else
 182                 wprintf("Goodbye\n");
 183
 184         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 185                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 186                 "</CENTER>\n");
 187         wDumpContent(2);
 188         end_webcit_session();
 189 }
 190
 191
 192
 193 /*
 194  * validate new users
 195  */
 196 void validate(void)
 197 {
 198         char cmd[SIZ];
 199         char user[SIZ];
 200         char buf[SIZ];
 201         int a;
 202
 203         output_headers(3);
 204
 205         strcpy(buf, bstr("user"));
 206         if (strlen(buf) > 0)
 207                 if (strlen(bstr("WC->axlevel")) > 0) {
 208                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 209                         serv_gets(buf);
 210                         if (buf[0] != '2') {
 211                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 212                         }
 213                 }
 214         serv_puts("GNUR");
 215         serv_gets(buf);
 216
 217         if (buf[0] != '3') {
 218                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 219                 wDumpContent(1);
 220                 return;
 221         }
 222         strcpy(user, &buf[4]);
 223         serv_printf("GREG %s", user);
 224         serv_gets(cmd);
 225         if (cmd[0] == '1') {
 226                 a = 0;
 227                 do {
 228                         serv_gets(buf);
 229                         ++a;
 230                         if (a == 1)
 231                                 wprintf("User #%s<BR><H1>%s</H1>",
 232                                         buf, &cmd[4]);
 233                         if (a == 2)
 234                                 wprintf("PW: %s<BR>\n", buf);
 235                         if (a == 3)
 236                                 wprintf("%s<BR>\n", buf);
 237                         if (a == 4)
 238                                 wprintf("%s<BR>\n", buf);
 239                         if (a == 5)
 240                                 wprintf("%s, ", buf);
 241                         if (a == 6)
 242                                 wprintf("%s ", buf);
 243                         if (a == 7)
 244                                 wprintf("%s<BR>\n", buf);
 245                         if (a == 8)
 246                                 wprintf("%s<BR>\n", buf);
 247                         if (a == 9)
 248                                 wprintf("Current access level: %d (%s)\n",
 249                                         atoi(buf), axdefs[atoi(buf)]);
 250                 } while (strcmp(buf, "000"));
 251         } else {
 252                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 253         }
 254
 255         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 256         wprintf("</CAPTION><TR>");
 257         for (a = 0; a <= 6; ++a) {
 258                 wprintf("<TD><A HREF=\"/validate&user=");
 259                 urlescputs(user);
 260                 wprintf("&WC->axlevel=%d\">%s</A></TD>\n",
 261                         a, axdefs[a]);
 262         }
 263         wprintf("</TR></TABLE><CENTER><BR>\n");
 264         wDumpContent(1);
 265 }
 266
 267
 268
 269
 270
 271
 272 /*
 273  * Display form for registration.
 274  * (Set during_login to 1 if this registration is being performed during
 275  * new user login and will require chaining to the proper screen.)
 276  */
 277 void display_reg(int during_login)
 278 {
 279         char buf[SIZ];
 280         int a;
 281
 282         output_headers(3);
 283
 284         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>");
 285         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 286         wprintf("<B>Enter registration info</B>\n");
 287         wprintf("</FONT></TD></TR></TABLE>\n");
 288
 289         wprintf("<CENTER>");
 290         serv_puts("MESG register");
 291         serv_gets(buf);
 292         if (buf[0] == '1')
 293                 fmout(NULL);
 294
 295         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 296         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 297
 298         serv_puts("GREG _SELF_");
 299         serv_gets(buf);
 300         if (buf[0] != '1') {
 301                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 302         } else {
 303
 304                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 305                 a = 0;
 306                 while (serv_gets(buf), strcmp(buf, "000")) {
 307                         ++a;
 308                         wprintf("<TR><TD>");
 309                         switch (a) {
 310                         case 3:
 311                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 312                                 break;
 313                         case 4:
 314                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 315                                 break;
 316                         case 5:
 317                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 318                                 break;
 319                         case 6:
 320                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 321                                 break;
 322                         case 7:
 323                                 wprintf("ZIP/postal code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 324                                 break;
 325                         case 8:
 326                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 327                                 break;
 328                         case 10:
 329                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 330                                 break;
 331                         case 11:
 332                                 wprintf("Country:</TD><TD><INPUT TYPE=\"text\" NAME=\"country\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 333                                 break;
 334                         }
 335                         wprintf("</TD></TR>\n");
 336                 }
 337                 wprintf("</TABLE><P>");
 338         }
 339         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 340         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 341         wprintf("</CENTER>\n");
 342         wDumpContent(1);
 343 }
 344
 345 /*
 346  * register
 347  */
 348 void register_user(void)
 349 {
 350         char buf[SIZ];
 351
 352         if (strcmp(bstr("action"), "Register")) {
 353                 display_error("Cancelled.  Registration was not saved.");
 354                 return;
 355         }
 356         serv_puts("REGI");
 357         serv_gets(buf);
 358         if (buf[0] != '4') {
 359                 display_error(&buf[4]);
 360         }
 361         serv_puts(bstr("realname"));
 362         serv_puts(bstr("address"));
 363         serv_puts(bstr("city"));
 364         serv_puts(bstr("state"));
 365         serv_puts(bstr("zip"));
 366         serv_puts(bstr("phone"));
 367         serv_puts(bstr("email"));
 368         serv_puts(bstr("country"));
 369         serv_puts("000");
 370
 371         if (atoi(bstr("during_login"))) {
 372                 do_welcome();
 373         } else {
 374                 display_success("Registration information has been saved.");
 375         }
 376 }
 377
 378
 379
 380
 381
 382 /*
 383  * display form for changing your password
 384  */
 385 void display_changepw(void)
 386 {
 387         char buf[SIZ];
 388
 389         output_headers(3);
 390
 391         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=770000><TR><TD>");
 392         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 393         wprintf("<B>Change your password</B>\n");
 394         wprintf("</FONT></TD></TR></TABLE>\n");
 395
 396         wprintf("<CENTER>");
 397         serv_puts("MESG changepw");
 398         serv_gets(buf);
 399         if (buf[0] == '1')
 400                 fmout(NULL);
 401
 402         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 403         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 404         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 405         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 406         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 407         wprintf("</TABLE>\n");
 408         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 409         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 410         wprintf("</CENTER>\n");
 411         wDumpContent(1);
 412 }
 413
 414 /*
 415  * change password
 416  */
 417 void changepw(void)
 418 {
 419         char buf[SIZ];
 420         char newpass1[32], newpass2[32];
 421
 422         if (strcmp(bstr("action"), "Change")) {
 423                 display_error("Cancelled.  Password was not changed.");
 424                 return;
 425         }
 426         strcpy(newpass1, bstr("newpass1"));
 427         strcpy(newpass2, bstr("newpass2"));
 428
 429         if (strcasecmp(newpass1, newpass2)) {
 430                 display_error("They don't match.  Password was not changed.");
 431                 return;
 432         }
 433         serv_printf("SETP %s", newpass1);
 434         serv_gets(buf);
 435         if (buf[0] == '2')
 436                 display_success(&buf[4]);
 437         else
 438                 display_error(&buf[4]);
 439 }