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
  32 char *axdefs[] =
  33 {
  34         "Deleted",
  35         "New User",
  36         "Problem User",
  37         "Local User",
  38         "Network User",
  39         "Preferred User",
  40         "Aide"
  41 };
  42
  43 /*
  44  * Display the login screen
  45  */
  46 void display_login(char *mesg)
  47 {
  48         output_headers(3);
  49
  50         /*
  51         mesg = mesg
  52         hello = "mesg hello"
  53         humannode = config.c_humannode
  54         */
  55
  56         do_template("login.html");
  57
  58         wDumpContent(0);        /* No menu here; not logged in yet! */
  59 }
  60
  61
  62
  63
  64 /*
  65  * This function needs to get called whenever a PASS or NEWU succeeds.
  66  */
  67 void become_logged_in(char *user, char *pass, char *serv_response)
  68 {
  69         WC->logged_in = 1;
  70         extract(WC->wc_username, &serv_response[4], 0);
  71         strcpy(WC->wc_password, pass);
  72         WC->axlevel = extract_int(&serv_response[4], 1);
  73         if (WC->axlevel >= 6)
  74                 WC->is_aide = 1;
  75 }
  76
  77
  78 void do_login(void)
  79 {
  80         char buf[256];
  81         int need_regi = 0;
  82
  83
  84         if (!strcasecmp(bstr("action"), "Exit")) {
  85                 do_logout();
  86                 return;
  87         }
  88         if (!strcasecmp(bstr("action"), "Login")) {
  89                 serv_printf("USER %s", bstr("name"));
  90                 serv_gets(buf);
  91                 if (buf[0] == '3') {
  92                         serv_printf("PASS %s", bstr("pass"));
  93                         serv_gets(buf);
  94                         if (buf[0] == '2') {
  95                                 become_logged_in(bstr("name"),
  96                                                  bstr("pass"), buf);
  97                         } else {
  98                                 display_login(&buf[4]);
  99                                 return;
 100                         }
 101                 } else {
 102                         display_login(&buf[4]);
 103                         return;
 104                 }
 105         }
 106         if (!strcasecmp(bstr("action"), "New User")) {
 107                 serv_printf("NEWU %s", bstr("name"));
 108                 serv_gets(buf);
 109                 if (buf[0] == '2') {
 110                         become_logged_in(bstr("name"), bstr("pass"), buf);
 111                         serv_printf("SETP %s", bstr("pass"));
 112                         serv_gets(buf);
 113                 } else {
 114                         display_login(&buf[4]);
 115                         return;
 116                 }
 117         }
 118         if (WC->logged_in) {
 119                 serv_puts("CHEK");
 120                 serv_gets(buf);
 121                 if (buf[0] == '2') {
 122                         WC->new_mail = extract_int(&buf[4], 0);
 123                         need_regi = extract_int(&buf[4], 1);
 124                         WC->need_vali = extract_int(&buf[4], 2);
 125                 }
 126                 if (need_regi) {
 127                         display_reg(1);
 128                 } else {
 129                         do_welcome();
 130                 }
 131         } else {
 132                 display_login("Your password was not accepted.");
 133         }
 134
 135 }
 136
 137 void do_welcome(void)
 138 {
 139         smart_goto("_BASEROOM_");
 140 }
 141
 142
 143 /*
 144  * Disconnect from the Citadel server, and end this WebCit session
 145  */
 146 void end_webcit_session(void) {
 147         serv_puts("QUIT");
 148         close(WC->serv_sock);
 149         WC->serv_sock = (-1);
 150         WC->killthis = 1;
 151 }
 152
 153
 154 void do_logout(void)
 155 {
 156         char buf[256];
 157
 158         strcpy(WC->wc_username, "");
 159         strcpy(WC->wc_password, "");
 160         strcpy(WC->wc_roomname, "");
 161
 162         output_headers(2);      /* note "2" causes cookies to be unset */
 163
 164         wprintf("<CENTER>");
 165         serv_puts("MESG goodbye");
 166         serv_gets(buf);
 167
 168         if (buf[0] == '1')
 169                 fmout(NULL);
 170         else
 171                 wprintf("Goodbye\n");
 172
 173         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 174                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 175                 "</CENTER>\n");
 176         wDumpContent(2);
 177         end_webcit_session();
 178 }
 179
 180
 181
 182 /*
 183  * validate new users
 184  */
 185 void validate(void)
 186 {
 187         char cmd[256];
 188         char user[256];
 189         char buf[256];
 190         int a;
 191
 192         output_headers(1);
 193
 194         strcpy(buf, bstr("user"));
 195         if (strlen(buf) > 0)
 196                 if (strlen(bstr("WC->axlevel")) > 0) {
 197                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 198                         serv_gets(buf);
 199                         if (buf[0] != '2') {
 200                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 201                         }
 202                 }
 203         serv_puts("GNUR");
 204         serv_gets(buf);
 205
 206         if (buf[0] != '3') {
 207                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 208                 wDumpContent(1);
 209                 return;
 210         }
 211         strcpy(user, &buf[4]);
 212         serv_printf("GREG %s", user);
 213         serv_gets(cmd);
 214         if (cmd[0] == '1') {
 215                 a = 0;
 216                 do {
 217                         serv_gets(buf);
 218                         ++a;
 219                         if (a == 1)
 220                                 wprintf("User #%s<BR><H1>%s</H1>",
 221                                         buf, &cmd[4]);
 222                         if (a == 2)
 223                                 wprintf("PW: %s<BR>\n", buf);
 224                         if (a == 3)
 225                                 wprintf("%s<BR>\n", buf);
 226                         if (a == 4)
 227                                 wprintf("%s<BR>\n", buf);
 228                         if (a == 5)
 229                                 wprintf("%s, ", buf);
 230                         if (a == 6)
 231                                 wprintf("%s ", buf);
 232                         if (a == 7)
 233                                 wprintf("%s<BR>\n", buf);
 234                         if (a == 8)
 235                                 wprintf("%s<BR>\n", buf);
 236                         if (a == 9)
 237                                 wprintf("Current access level: %d (%s)\n",
 238                                         atoi(buf), axdefs[atoi(buf)]);
 239                 } while (strcmp(buf, "000"));
 240         } else {
 241                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 242         }
 243
 244         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 245         wprintf("</CAPTION><TR>");
 246         for (a = 0; a <= 6; ++a) {
 247                 wprintf(
 248                                "<TD><A HREF=\"/validate&user=%s&WC->axlevel=%d\">%s</A></TD>\n",
 249                                urlesc(user), a, axdefs[a]);
 250         }
 251         wprintf("</TR></TABLE><CENTER><BR>\n");
 252         wDumpContent(1);
 253 }
 254
 255
 256
 257
 258
 259
 260 /*
 261  * Display form for registration.
 262  * (Set during_login to 1 if this registration is being performed during
 263  * new user login and will require chaining to the proper screen.)
 264  */
 265 void display_reg(int during_login)
 266 {
 267         char buf[256];
 268         int a;
 269
 270         output_headers(1);
 271
 272         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=007700><TR><TD>");
 273         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 274         wprintf("<B>Enter registration info</B>\n");
 275         wprintf("</FONT></TD></TR></TABLE>\n");
 276
 277         wprintf("<CENTER>");
 278         serv_puts("MESG register");
 279         serv_gets(buf);
 280         if (buf[0] == '1')
 281                 fmout(NULL);
 282
 283         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 284         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 285
 286         serv_puts("GREG _SELF_");
 287         serv_gets(buf);
 288         if (buf[0] != '1') {
 289                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 290         } else {
 291
 292                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 293                 a = 0;
 294                 while (serv_gets(buf), strcmp(buf, "000")) {
 295                         ++a;
 296                         wprintf("<TR><TD>");
 297                         switch (a) {
 298                         case 3:
 299                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 300                                 break;
 301                         case 4:
 302                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 303                                 break;
 304                         case 5:
 305                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 306                                 break;
 307                         case 6:
 308                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 309                                 break;
 310                         case 7:
 311                                 wprintf("ZIP code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 312                                 break;
 313                         case 8:
 314                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 315                                 break;
 316                         case 10:
 317                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 318                                 break;
 319                         }
 320                         wprintf("</TD></TR>\n");
 321                 }
 322                 wprintf("</TABLE><P>");
 323         }
 324         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 325         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 326         wprintf("</CENTER>\n");
 327         wDumpContent(1);
 328 }
 329
 330 /*
 331  * register
 332  */
 333 void register_user(void)
 334 {
 335         char buf[256];
 336
 337         if (strcmp(bstr("action"), "Register")) {
 338                 display_error("Cancelled.  Registration was not saved.");
 339                 return;
 340         }
 341         serv_puts("REGI");
 342         serv_gets(buf);
 343         if (buf[0] != '4') {
 344                 display_error(&buf[4]);
 345         }
 346         serv_puts(bstr("realname"));
 347         serv_puts(bstr("address"));
 348         serv_puts(bstr("city"));
 349         serv_puts(bstr("state"));
 350         serv_puts(bstr("zip"));
 351         serv_puts(bstr("phone"));
 352         serv_puts(bstr("email"));
 353         serv_puts("000");
 354
 355         if (atoi(bstr("during_login"))) {
 356                 do_welcome();
 357         } else {
 358                 display_error("Registration information has been saved.");
 359         }
 360 }
 361
 362
 363
 364
 365
 366 /*
 367  * display form for changing your password
 368  */
 369 void display_changepw(void)
 370 {
 371         char buf[256];
 372
 373         output_headers(1);
 374
 375         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=770000><TR><TD>");
 376         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 377         wprintf("<B>Change your password</B>\n");
 378         wprintf("</FONT></TD></TR></TABLE>\n");
 379
 380         wprintf("<CENTER>");
 381         serv_puts("MESG changepw");
 382         serv_gets(buf);
 383         if (buf[0] == '1')
 384                 fmout(NULL);
 385
 386         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 387         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 388         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 389         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 390         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 391         wprintf("</TABLE>\n");
 392         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 393         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 394         wprintf("</CENTER>\n");
 395         wDumpContent(1);
 396 }
 397
 398 /*
 399  * change password
 400  */
 401 void changepw(void)
 402 {
 403         char buf[256];
 404         char newpass1[32], newpass2[32];
 405
 406         if (strcmp(bstr("action"), "Change")) {
 407                 display_error("Cancelled.  Password was not changed.");
 408                 return;
 409         }
 410         strcpy(newpass1, bstr("newpass1"));
 411         strcpy(newpass2, bstr("newpass2"));
 412
 413         if (strcasecmp(newpass1, newpass2)) {
 414                 display_error("They don't match.  Password was not changed.");
 415                 return;
 416         }
 417         serv_printf("SETP %s", newpass1);
 418         serv_gets(buf);
 419         if (buf[0] == '2')
 420                 display_success(&buf[4]);
 421         else
 422                 display_error(&buf[4]);
 423 }