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