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");
  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         char startpage[SIZ];
 152
 153         get_preference("startpage", startpage);
 154         if (strlen(startpage)==0) {
 155                 strcpy(startpage, "/dotskip&room=_BASEROOM_");
 156                 set_preference("startpage", startpage);
 157         }
 158
 159         svprintf("STARTPAGE", WCS_STRING, startpage);
 160
 161         do_template("mainframeset");
 162         clear_local_substs();
 163 }
 164
 165
 166 /*
 167  * Disconnect from the Citadel server, and end this WebCit session
 168  */
 169 void end_webcit_session(void) {
 170         serv_puts("QUIT");
 171         WC->killthis = 1;
 172         /* close() of citadel socket will be done by do_housekeeping() */
 173 }
 174
 175
 176 void do_logout(void)
 177 {
 178         char buf[SIZ];
 179
 180         strcpy(WC->wc_username, "");
 181         strcpy(WC->wc_password, "");
 182         strcpy(WC->wc_roomname, "");
 183
 184         output_headers(2);      /* note "2" causes cookies to be unset */
 185
 186         wprintf("<CENTER>");
 187         serv_puts("MESG goodbye");
 188         serv_gets(buf);
 189
 190         if (buf[0] == '1')
 191                 fmout(NULL);
 192         else
 193                 wprintf("Goodbye\n");
 194
 195         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 196                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 197                 "</CENTER>\n");
 198         wDumpContent(2);
 199         end_webcit_session();
 200 }
 201
 202
 203
 204 /*
 205  * validate new users
 206  */
 207 void validate(void)
 208 {
 209         char cmd[SIZ];
 210         char user[SIZ];
 211         char buf[SIZ];
 212         int a;
 213
 214         output_headers(3);
 215
 216         strcpy(buf, bstr("user"));
 217         if (strlen(buf) > 0)
 218                 if (strlen(bstr("WC->axlevel")) > 0) {
 219                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 220                         serv_gets(buf);
 221                         if (buf[0] != '2') {
 222                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 223                         }
 224                 }
 225         serv_puts("GNUR");
 226         serv_gets(buf);
 227
 228         if (buf[0] != '3') {
 229                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 230                 wDumpContent(1);
 231                 return;
 232         }
 233         strcpy(user, &buf[4]);
 234         serv_printf("GREG %s", user);
 235         serv_gets(cmd);
 236         if (cmd[0] == '1') {
 237                 a = 0;
 238                 do {
 239                         serv_gets(buf);
 240                         ++a;
 241                         if (a == 1)
 242                                 wprintf("User #%s<BR><H1>%s</H1>",
 243                                         buf, &cmd[4]);
 244                         if (a == 2)
 245                                 wprintf("PW: %s<BR>\n", buf);
 246                         if (a == 3)
 247                                 wprintf("%s<BR>\n", buf);
 248                         if (a == 4)
 249                                 wprintf("%s<BR>\n", buf);
 250                         if (a == 5)
 251                                 wprintf("%s, ", buf);
 252                         if (a == 6)
 253                                 wprintf("%s ", buf);
 254                         if (a == 7)
 255                                 wprintf("%s<BR>\n", buf);
 256                         if (a == 8)
 257                                 wprintf("%s<BR>\n", buf);
 258                         if (a == 9)
 259                                 wprintf("Current access level: %d (%s)\n",
 260                                         atoi(buf), axdefs[atoi(buf)]);
 261                 } while (strcmp(buf, "000"));
 262         } else {
 263                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 264         }
 265
 266         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 267         wprintf("</CAPTION><TR>");
 268         for (a = 0; a <= 6; ++a) {
 269                 wprintf("<TD><A HREF=\"/validate&user=");
 270                 urlescputs(user);
 271                 wprintf("&WC->axlevel=%d\">%s</A></TD>\n",
 272                         a, axdefs[a]);
 273         }
 274         wprintf("</TR></TABLE><CENTER><BR>\n");
 275         wDumpContent(1);
 276 }
 277
 278
 279
 280
 281
 282
 283 /*
 284  * Display form for registration.
 285  * (Set during_login to 1 if this registration is being performed during
 286  * new user login and will require chaining to the proper screen.)
 287  */
 288 void display_reg(int during_login)
 289 {
 290         char buf[SIZ];
 291         int a;
 292
 293         output_headers(3);
 294
 295         wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=007700><TR><TD>");
 296         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 297         wprintf("<B>Enter registration info</B>\n");
 298         wprintf("</FONT></TD></TR></TABLE>\n");
 299
 300         wprintf("<CENTER>");
 301         serv_puts("MESG register");
 302         serv_gets(buf);
 303         if (buf[0] == '1')
 304                 fmout(NULL);
 305
 306         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 307         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 308
 309         serv_puts("GREG _SELF_");
 310         serv_gets(buf);
 311         if (buf[0] != '1') {
 312                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 313         } else {
 314
 315                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 316                 a = 0;
 317                 while (serv_gets(buf), strcmp(buf, "000")) {
 318                         ++a;
 319                         wprintf("<TR><TD>");
 320                         switch (a) {
 321                         case 3:
 322                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 323                                 break;
 324                         case 4:
 325                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 326                                 break;
 327                         case 5:
 328                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 329                                 break;
 330                         case 6:
 331                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 332                                 break;
 333                         case 7:
 334                                 wprintf("ZIP/postal code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 335                                 break;
 336                         case 8:
 337                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 338                                 break;
 339                         case 10:
 340                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 341                                 break;
 342                         case 11:
 343                                 wprintf("Country:</TD><TD><INPUT TYPE=\"text\" NAME=\"country\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 344                                 break;
 345                         }
 346                         wprintf("</TD></TR>\n");
 347                 }
 348                 wprintf("</TABLE><P>");
 349         }
 350         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 351         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 352         wprintf("</CENTER>\n");
 353         wDumpContent(1);
 354 }
 355
 356 /*
 357  * register
 358  */
 359 void register_user(void)
 360 {
 361         char buf[SIZ];
 362
 363         if (strcmp(bstr("action"), "Register")) {
 364                 display_error("Cancelled.  Registration was not saved.");
 365                 return;
 366         }
 367         serv_puts("REGI");
 368         serv_gets(buf);
 369         if (buf[0] != '4') {
 370                 display_error(&buf[4]);
 371         }
 372         serv_puts(bstr("realname"));
 373         serv_puts(bstr("address"));
 374         serv_puts(bstr("city"));
 375         serv_puts(bstr("state"));
 376         serv_puts(bstr("zip"));
 377         serv_puts(bstr("phone"));
 378         serv_puts(bstr("email"));
 379         serv_puts(bstr("country"));
 380         serv_puts("000");
 381
 382         if (atoi(bstr("during_login"))) {
 383                 do_welcome();
 384         } else {
 385                 display_success("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[SIZ];
 399
 400         output_headers(3);
 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[SIZ];
 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 }