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         char buf[256];
  49
  50         output_headers(3);
  51
  52         if (mesg != NULL) if (strlen(mesg) > 0) {
  53                 stresc(buf, mesg, 0);
  54                 svprintf("mesg", WCS_STRING, "%s", buf);
  55         }
  56
  57         stresc(buf, serv_info.serv_humannode, 1);
  58         svprintf("humannode", WCS_STRING, "%s", buf);
  59
  60         svprintf("hello", WCS_SERVCMD, "MESG hello");
  61
  62         do_template("login.html");
  63
  64         clear_local_substs();
  65         wDumpContent(0);        /* No menu here; not logged in yet! */
  66 }
  67
  68
  69
  70
  71 /*
  72  * This function needs to get called whenever a PASS or NEWU succeeds.
  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
  84
  85 void do_login(void)
  86 {
  87         char buf[256];
  88         int need_regi = 0;
  89
  90
  91         if (!strcasecmp(bstr("action"), "Exit")) {
  92                 do_logout();
  93                 return;
  94         }
  95         if (!strcasecmp(bstr("action"), "Login")) {
  96                 serv_printf("USER %s", bstr("name"));
  97                 serv_gets(buf);
  98                 if (buf[0] == '3') {
  99                         serv_printf("PASS %s", bstr("pass"));
 100                         serv_gets(buf);
 101                         if (buf[0] == '2') {
 102                                 become_logged_in(bstr("name"),
 103                                                  bstr("pass"), buf);
 104                         } else {
 105                                 display_login(&buf[4]);
 106                                 return;
 107                         }
 108                 } else {
 109                         display_login(&buf[4]);
 110                         return;
 111                 }
 112         }
 113         if (!strcasecmp(bstr("action"), "New User")) {
 114                 serv_printf("NEWU %s", bstr("name"));
 115                 serv_gets(buf);
 116                 if (buf[0] == '2') {
 117                         become_logged_in(bstr("name"), bstr("pass"), buf);
 118                         serv_printf("SETP %s", bstr("pass"));
 119                         serv_gets(buf);
 120                 } else {
 121                         display_login(&buf[4]);
 122                         return;
 123                 }
 124         }
 125         if (WC->logged_in) {
 126                 serv_puts("CHEK");
 127                 serv_gets(buf);
 128                 if (buf[0] == '2') {
 129                         WC->new_mail = extract_int(&buf[4], 0);
 130                         need_regi = extract_int(&buf[4], 1);
 131                         WC->need_vali = extract_int(&buf[4], 2);
 132                 }
 133                 if (need_regi) {
 134                         display_reg(1);
 135                 } else {
 136                         do_welcome();
 137                 }
 138         } else {
 139                 display_login("Your password was not accepted.");
 140         }
 141
 142 }
 143
 144 void do_welcome(void)
 145 {
 146         smart_goto("_BASEROOM_");
 147 }
 148
 149
 150 /*
 151  * Disconnect from the Citadel server, and end this WebCit session
 152  */
 153 void end_webcit_session(void) {
 154         serv_puts("QUIT");
 155         close(WC->serv_sock);
 156         WC->serv_sock = (-1);
 157         WC->killthis = 1;
 158 }
 159
 160
 161 void do_logout(void)
 162 {
 163         char buf[256];
 164
 165         strcpy(WC->wc_username, "");
 166         strcpy(WC->wc_password, "");
 167         strcpy(WC->wc_roomname, "");
 168
 169         output_headers(2);      /* note "2" causes cookies to be unset */
 170
 171         wprintf("<CENTER>");
 172         serv_puts("MESG goodbye");
 173         serv_gets(buf);
 174
 175         if (buf[0] == '1')
 176                 fmout(NULL);
 177         else
 178                 wprintf("Goodbye\n");
 179
 180         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 181                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 182                 "</CENTER>\n");
 183         wDumpContent(2);
 184         end_webcit_session();
 185 }
 186
 187
 188
 189 /*
 190  * validate new users
 191  */
 192 void validate(void)
 193 {
 194         char cmd[256];
 195         char user[256];
 196         char buf[256];
 197         int a;
 198
 199         output_headers(1);
 200
 201         strcpy(buf, bstr("user"));
 202         if (strlen(buf) > 0)
 203                 if (strlen(bstr("WC->axlevel")) > 0) {
 204                         serv_printf("VALI %s|%s", buf, bstr("WC->axlevel"));
 205                         serv_gets(buf);
 206                         if (buf[0] != '2') {
 207                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 208                         }
 209                 }
 210         serv_puts("GNUR");
 211         serv_gets(buf);
 212
 213         if (buf[0] != '3') {
 214                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 215                 wDumpContent(1);
 216                 return;
 217         }
 218         strcpy(user, &buf[4]);
 219         serv_printf("GREG %s", user);
 220         serv_gets(cmd);
 221         if (cmd[0] == '1') {
 222                 a = 0;
 223                 do {
 224                         serv_gets(buf);
 225                         ++a;
 226                         if (a == 1)
 227                                 wprintf("User #%s<BR><H1>%s</H1>",
 228                                         buf, &cmd[4]);
 229                         if (a == 2)
 230                                 wprintf("PW: %s<BR>\n", buf);
 231                         if (a == 3)
 232                                 wprintf("%s<BR>\n", buf);
 233                         if (a == 4)
 234                                 wprintf("%s<BR>\n", buf);
 235                         if (a == 5)
 236                                 wprintf("%s, ", buf);
 237                         if (a == 6)
 238                                 wprintf("%s ", buf);
 239                         if (a == 7)
 240                                 wprintf("%s<BR>\n", buf);
 241                         if (a == 8)
 242                                 wprintf("%s<BR>\n", buf);
 243                         if (a == 9)
 244                                 wprintf("Current access level: %d (%s)\n",
 245                                         atoi(buf), axdefs[atoi(buf)]);
 246                 } while (strcmp(buf, "000"));
 247         } else {
 248                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 249         }
 250
 251         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 252         wprintf("</CAPTION><TR>");
 253         for (a = 0; a <= 6; ++a) {
 254                 wprintf(
 255                                "<TD><A HREF=\"/validate&user=%s&WC->axlevel=%d\">%s</A></TD>\n",
 256                                urlesc(user), a, axdefs[a]);
 257         }
 258         wprintf("</TR></TABLE><CENTER><BR>\n");
 259         wDumpContent(1);
 260 }
 261
 262
 263
 264
 265
 266
 267 /*
 268  * Display form for registration.
 269  * (Set during_login to 1 if this registration is being performed during
 270  * new user login and will require chaining to the proper screen.)
 271  */
 272 void display_reg(int during_login)
 273 {
 274         char buf[256];
 275         int a;
 276
 277         output_headers(1);
 278
 279         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=007700><TR><TD>");
 280         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 281         wprintf("<B>Enter registration info</B>\n");
 282         wprintf("</FONT></TD></TR></TABLE>\n");
 283
 284         wprintf("<CENTER>");
 285         serv_puts("MESG register");
 286         serv_gets(buf);
 287         if (buf[0] == '1')
 288                 fmout(NULL);
 289
 290         wprintf("<FORM ACTION=\"/register\" METHOD=\"POST\">\n");
 291         wprintf("<INPUT TYPE=\"hidden\" NAME=\"during_login\" VALUE=\"%d\">\n", during_login);
 292
 293         serv_puts("GREG _SELF_");
 294         serv_gets(buf);
 295         if (buf[0] != '1') {
 296                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 297         } else {
 298
 299                 wprintf("<H1>%s</H1><TABLE border>\n", &buf[4]);
 300                 a = 0;
 301                 while (serv_gets(buf), strcmp(buf, "000")) {
 302                         ++a;
 303                         wprintf("<TR><TD>");
 304                         switch (a) {
 305                         case 3:
 306                                 wprintf("Real Name:</TD><TD><INPUT TYPE=\"text\" NAME=\"realname\" VALUE=\"%s\" MAXLENGTH=\"29\"><BR>\n", buf);
 307                                 break;
 308                         case 4:
 309                                 wprintf("Street Address:</TD><TD><INPUT TYPE=\"text\" NAME=\"address\" VALUE=\"%s\" MAXLENGTH=\"24\"><BR>\n", buf);
 310                                 break;
 311                         case 5:
 312                                 wprintf("City/town:</TD><TD><INPUT TYPE=\"text\" NAME=\"city\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 313                                 break;
 314                         case 6:
 315                                 wprintf("State/province:</TD><TD><INPUT TYPE=\"text\" NAME=\"state\" VALUE=\"%s\" MAXLENGTH=\"2\"><BR>\n", buf);
 316                                 break;
 317                         case 7:
 318                                 wprintf("ZIP code:</TD><TD><INPUT TYPE=\"text\" NAME=\"zip\" VALUE=\"%s\" MAXLENGTH=\"10\"><BR>\n", buf);
 319                                 break;
 320                         case 8:
 321                                 wprintf("Telephone:</TD><TD><INPUT TYPE=\"text\" NAME=\"phone\" VALUE=\"%s\" MAXLENGTH=\"14\"><BR>\n", buf);
 322                                 break;
 323                         case 10:
 324                                 wprintf("E-Mail:</TD><TD><INPUT TYPE=\"text\" NAME=\"email\" VALUE=\"%s\" MAXLENGTH=\"31\"><BR>\n", buf);
 325                                 break;
 326                         }
 327                         wprintf("</TD></TR>\n");
 328                 }
 329                 wprintf("</TABLE><P>");
 330         }
 331         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Register\">\n");
 332         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 333         wprintf("</CENTER>\n");
 334         wDumpContent(1);
 335 }
 336
 337 /*
 338  * register
 339  */
 340 void register_user(void)
 341 {
 342         char buf[256];
 343
 344         if (strcmp(bstr("action"), "Register")) {
 345                 display_error("Cancelled.  Registration was not saved.");
 346                 return;
 347         }
 348         serv_puts("REGI");
 349         serv_gets(buf);
 350         if (buf[0] != '4') {
 351                 display_error(&buf[4]);
 352         }
 353         serv_puts(bstr("realname"));
 354         serv_puts(bstr("address"));
 355         serv_puts(bstr("city"));
 356         serv_puts(bstr("state"));
 357         serv_puts(bstr("zip"));
 358         serv_puts(bstr("phone"));
 359         serv_puts(bstr("email"));
 360         serv_puts("000");
 361
 362         if (atoi(bstr("during_login"))) {
 363                 do_welcome();
 364         } else {
 365                 display_error("Registration information has been saved.");
 366         }
 367 }
 368
 369
 370
 371
 372
 373 /*
 374  * display form for changing your password
 375  */
 376 void display_changepw(void)
 377 {
 378         char buf[256];
 379
 380         output_headers(1);
 381
 382         wprintf("<TABLE WIDTH=100% BORDER=0 BGCOLOR=770000><TR><TD>");
 383         wprintf("<FONT SIZE=+1 COLOR=\"FFFFFF\"");
 384         wprintf("<B>Change your password</B>\n");
 385         wprintf("</FONT></TD></TR></TABLE>\n");
 386
 387         wprintf("<CENTER>");
 388         serv_puts("MESG changepw");
 389         serv_gets(buf);
 390         if (buf[0] == '1')
 391                 fmout(NULL);
 392
 393         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 394         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 395         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 396         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 397         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 398         wprintf("</TABLE>\n");
 399         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 400         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 401         wprintf("</CENTER>\n");
 402         wDumpContent(1);
 403 }
 404
 405 /*
 406  * change password
 407  */
 408 void changepw(void)
 409 {
 410         char buf[256];
 411         char newpass1[32], newpass2[32];
 412
 413         if (strcmp(bstr("action"), "Change")) {
 414                 display_error("Cancelled.  Password was not changed.");
 415                 return;
 416         }
 417         strcpy(newpass1, bstr("newpass1"));
 418         strcpy(newpass2, bstr("newpass2"));
 419
 420         if (strcasecmp(newpass1, newpass2)) {
 421                 display_error("They don't match.  Password was not changed.");
 422                 return;
 423         }
 424         serv_printf("SETP %s", newpass1);
 425         serv_gets(buf);
 426         if (buf[0] == '2')
 427                 display_success(&buf[4]);
 428         else
 429                 display_error(&buf[4]);
 430 }