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, 0);
  53                 svprintf("mesg", WCS_STRING, "%s", buf);
  54         }
  55
  56         svprintf("hello", WCS_SERVCMD, "MESG hello");
  57         svprintf("BOXTITLE", WCS_STRING, "%s - powered by Citadel",
  58                 serv_info.serv_humannode);
  59
  60         do_template("login");
  61
  62         wDumpContent(0);        /* No menu here; not logged in yet! */
  63 }
  64
  65
  66
  67
  68 /*
  69  * This function needs to get called whenever the session changes from
  70  * not-logged-in to logged-in, either by an explicit login by the user or
  71  * by a timed-out session automatically re-establishing with a little help
  72  * from the browser cookie.  Either way, we need to load access controls and
  73  * preferences from the server.
  74  */
  75 void become_logged_in(char *user, char *pass, char *serv_response)
  76 {
  77         char buf[SIZ];
  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
  87         load_preferences();
  88
  89         serv_puts("CHEK");
  90         serv_gets(buf);
  91         if (buf[0] == '2') {
  92                 WC->new_mail = extract_int(&buf[4], 0);
  93                 WC->need_regi = extract_int(&buf[4], 1);
  94                 WC->need_vali = extract_int(&buf[4], 2);
  95                 extract(WC->cs_inet_email, &buf[4], 3);
  96         }
  97 }
  98
  99
 100 void do_login(void)
 101 {
 102         char buf[SIZ];
 103
 104         if (!strcasecmp(bstr("action"), "Exit")) {
 105                 do_logout();
 106                 return;
 107         }
 108         if (!strcasecmp(bstr("action"), "Login")) {
 109                 serv_printf("USER %s", bstr("name"));
 110                 serv_gets(buf);
 111                 if (buf[0] == '3') {
 112                         serv_printf("PASS %s", bstr("pass"));
 113                         serv_gets(buf);
 114                         if (buf[0] == '2') {
 115                                 become_logged_in(bstr("name"),
 116                                                  bstr("pass"), buf);
 117                         } else {
 118                                 display_login(&buf[4]);
 119                                 return;
 120                         }
 121                 } else {
 122                         display_login(&buf[4]);
 123                         return;
 124                 }
 125         }
 126         if (!strcasecmp(bstr("action"), "New User")) {
 127                 serv_printf("NEWU %s", bstr("name"));
 128                 serv_gets(buf);
 129                 if (buf[0] == '2') {
 130                         become_logged_in(bstr("name"), bstr("pass"), buf);
 131                         serv_printf("SETP %s", bstr("pass"));
 132                         serv_gets(buf);
 133                 } else {
 134                         display_login(&buf[4]);
 135                         return;
 136                 }
 137         }
 138         if (WC->logged_in) {
 139                 if (WC->need_regi) {
 140                         display_reg(1);
 141                 } else {
 142                         do_welcome();
 143                 }
 144         } else {
 145                 display_login("Your password was not accepted.");
 146         }
 147
 148 }
 149
 150 void do_welcome(void)
 151 {
 152         char startpage[SIZ];
 153
 154         get_preference("startpage", startpage);
 155         if (strlen(startpage)==0) {
 156                 strcpy(startpage, "/dotskip&room=_BASEROOM_");
 157                 set_preference("startpage", startpage);
 158         }
 159
 160         svprintf("STARTPAGE", WCS_STRING, startpage);
 161
 162         do_template("mainframeset");
 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 (WC->serv_sock >= 0) {
 191                 if (buf[0] == '1') {
 192                         fmout(NULL, "CENTER");
 193                 } else {
 194                         wprintf("Goodbye\n");
 195                 }
 196         }
 197         else {
 198                 wprintf("This program was unable to connect or stay "
 199                         "connected to the Citadel server.  Please report "
 200                         "this problem to your system administrator."
 201                 );
 202         }
 203
 204         wprintf("<HR><A HREF=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 205                 "<A HREF=\"javascript:window.close();\">Close window</A>"
 206                 "</CENTER>\n");
 207         wDumpContent(2);
 208         end_webcit_session();
 209 }
 210
 211
 212
 213 /*
 214  * validate new users
 215  */
 216 void validate(void)
 217 {
 218         char cmd[SIZ];
 219         char user[SIZ];
 220         char buf[SIZ];
 221         int a;
 222
 223         output_headers(3);
 224
 225         strcpy(buf, bstr("user"));
 226         if (strlen(buf) > 0)
 227                 if (strlen(bstr("axlevel")) > 0) {
 228                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 229                         serv_gets(buf);
 230                         if (buf[0] != '2') {
 231                                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 232                         }
 233                 }
 234         serv_puts("GNUR");
 235         serv_gets(buf);
 236
 237         if (buf[0] != '3') {
 238                 wprintf("<EM>%s</EM><BR>\n", &buf[4]);
 239                 wDumpContent(1);
 240                 return;
 241         }
 242
 243         wprintf("<CENTER>");
 244         do_template("beginbox_nt");
 245         wprintf("<CENTER>");
 246
 247         strcpy(user, &buf[4]);
 248         serv_printf("GREG %s", user);
 249         serv_gets(cmd);
 250         if (cmd[0] == '1') {
 251                 a = 0;
 252                 do {
 253                         serv_gets(buf);
 254                         ++a;
 255                         if (a == 1)
 256                                 wprintf("User #%s<BR><H1>%s</H1>",
 257                                         buf, &cmd[4]);
 258                         if (a == 2)
 259                                 wprintf("PW: %s<BR>\n", buf);
 260                         if (a == 3)
 261                                 wprintf("%s<BR>\n", buf);
 262                         if (a == 4)
 263                                 wprintf("%s<BR>\n", buf);
 264                         if (a == 5)
 265                                 wprintf("%s, ", buf);
 266                         if (a == 6)
 267                                 wprintf("%s ", buf);
 268                         if (a == 7)
 269                                 wprintf("%s<BR>\n", buf);
 270                         if (a == 8)
 271                                 wprintf("%s<BR>\n", buf);
 272                         if (a == 9)
 273                                 wprintf("Current access level: %d (%s)\n",
 274                                         atoi(buf), axdefs[atoi(buf)]);
 275                 } while (strcmp(buf, "000"));
 276         } else {
 277                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 278         }
 279
 280         wprintf("<HR>Select access level for this user:<BR>\n");
 281         for (a = 0; a <= 6; ++a) {
 282                 wprintf("<A HREF=\"/validate&user=");
 283                 urlescputs(user);
 284                 wprintf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 285                         a, axdefs[a]);
 286         }
 287         wprintf("<BR>\n");
 288
 289         wprintf("</CENTER>\n");
 290         do_template("endbox");
 291         wprintf("</CENTER>\n");
 292         wDumpContent(1);
 293 }
 294
 295
 296
 297 /*
 298  * Display form for registration.
 299  * (Set during_login to 1 if this registration is being performed during
 300  * new user login and will require chaining to the proper screen.)
 301  */
 302 void display_reg(int during_login)
 303 {
 304         long vcard_msgnum;
 305
 306         if (goto_config_room() != 0) {
 307                 if (during_login) do_welcome();
 308                 else display_main_menu();
 309                 return;
 310         }
 311
 312         vcard_msgnum = locate_user_vcard(WC->wc_username, -1);
 313         if (vcard_msgnum < 0L) {
 314                 if (during_login) do_welcome();
 315                 else display_main_menu();
 316                 return;
 317         }
 318
 319         if (during_login) {
 320                 do_edit_vcard(vcard_msgnum, "1", "/do_welcome");
 321         }
 322         else {
 323                 do_edit_vcard(vcard_msgnum, "1", "/display_main_menu");
 324         }
 325
 326 }
 327
 328
 329
 330
 331 /*
 332  * display form for changing your password
 333  */
 334 void display_changepw(void)
 335 {
 336         char buf[SIZ];
 337
 338         output_headers(3);
 339
 340         svprintf("BOXTITLE", WCS_STRING, "Change your password");
 341         do_template("beginbox");
 342         wprintf("<CENTER><BR>");
 343         serv_puts("MESG changepw");
 344         serv_gets(buf);
 345         if (buf[0] == '1') {
 346                 fmout(NULL, "CENTER");
 347         }
 348
 349         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 350         wprintf("<CENTER>"
 351                 "<table border=\"0\" cellspacing=\"5\" cellpadding=\"5\" "
 352                 "BGCOLOR=\"#EEEEEE\">"
 353                 "<TR><TD>Enter new password:</TD>\n");
 354         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 355         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 356         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 357         wprintf("</TABLE><BR>\n");
 358         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n"
 359                 "&nbsp;"
 360                 "<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 361         wprintf("</CENTER>\n");
 362         do_template("endbox");
 363         wDumpContent(1);
 364 }
 365
 366 /*
 367  * change password
 368  */
 369 void changepw(void)
 370 {
 371         char buf[SIZ];
 372         char newpass1[32], newpass2[32];
 373
 374         if (strcmp(bstr("action"), "Change")) {
 375                 strcpy(WC->ImportantMessage,
 376                         "Cancelled.  Password was not changed.");
 377                 display_main_menu();
 378                 return;
 379         }
 380         strcpy(newpass1, bstr("newpass1"));
 381         strcpy(newpass2, bstr("newpass2"));
 382
 383         if (strcasecmp(newpass1, newpass2)) {
 384                 strcpy(WC->ImportantMessage,
 385                         "They don't match.  Password was not changed.");
 386                 display_main_menu();
 387                 return;
 388         }
 389         serv_printf("SETP %s", newpass1);
 390         serv_gets(buf);
 391         strcpy(WC->ImportantMessage, &buf[4]);
 392         display_main_menu();
 393 }