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(1, 1, 2, 0, 0, 0, 0);
  50         wprintf("<div id=\"content\">\n");
  51
  52         if (mesg != NULL) if (strlen(mesg) > 0) {
  53                 stresc(buf, mesg, 0, 0);
  54                 svprintf("mesg", WCS_STRING, "%s", buf);
  55         }
  56
  57         svprintf("hello", WCS_SERVCMD, "MESG hello");
  58         svprintf("BOXTITLE", WCS_STRING, "%s - powered by Citadel",
  59                 serv_info.serv_humannode);
  60
  61         do_template("login");
  62
  63         wDumpContent(2);
  64 }
  65
  66
  67
  68
  69 /*
  70  * This function needs to get called whenever the session changes from
  71  * not-logged-in to logged-in, either by an explicit login by the user or
  72  * by a timed-out session automatically re-establishing with a little help
  73  * from the browser cookie.  Either way, we need to load access controls and
  74  * preferences from the server.
  75  */
  76 void become_logged_in(char *user, char *pass, char *serv_response)
  77 {
  78         char buf[SIZ];
  79
  80         WC->logged_in = 1;
  81         extract(WC->wc_username, &serv_response[4], 0);
  82         strcpy(WC->wc_password, pass);
  83         WC->axlevel = extract_int(&serv_response[4], 1);
  84         if (WC->axlevel >= 6) {
  85                 WC->is_aide = 1;
  86         }
  87
  88         load_preferences();
  89
  90         serv_puts("CHEK");
  91         serv_gets(buf);
  92         if (buf[0] == '2') {
  93                 WC->new_mail = extract_int(&buf[4], 0);
  94                 WC->need_regi = extract_int(&buf[4], 1);
  95                 WC->need_vali = extract_int(&buf[4], 2);
  96                 extract(WC->cs_inet_email, &buf[4], 3);
  97         }
  98 }
  99
 100
 101 void do_login(void)
 102 {
 103         char buf[SIZ];
 104
 105         if (!strcasecmp(bstr("action"), "Exit")) {
 106                 do_logout();
 107                 return;
 108         }
 109         if (!strcasecmp(bstr("action"), "Login")) {
 110                 serv_printf("USER %s", bstr("name"));
 111                 serv_gets(buf);
 112                 if (buf[0] == '3') {
 113                         serv_printf("PASS %s", bstr("pass"));
 114                         serv_gets(buf);
 115                         if (buf[0] == '2') {
 116                                 become_logged_in(bstr("name"),
 117                                                  bstr("pass"), buf);
 118                         } else {
 119                                 display_login(&buf[4]);
 120                                 return;
 121                         }
 122                 } else {
 123                         display_login(&buf[4]);
 124                         return;
 125                 }
 126         }
 127         if (!strcasecmp(bstr("action"), "New User")) {
 128                 serv_printf("NEWU %s", bstr("name"));
 129                 serv_gets(buf);
 130                 if (buf[0] == '2') {
 131                         become_logged_in(bstr("name"), bstr("pass"), buf);
 132                         serv_printf("SETP %s", bstr("pass"));
 133                         serv_gets(buf);
 134                 } else {
 135                         display_login(&buf[4]);
 136                         return;
 137                 }
 138         }
 139         if (WC->logged_in) {
 140                 if (WC->need_regi) {
 141                         display_reg(1);
 142                 } else {
 143                         do_welcome();
 144                 }
 145         } else {
 146                 display_login("Your password was not accepted.");
 147         }
 148
 149 }
 150
 151 void do_welcome(void)
 152 {
 153         char startpage[SIZ];
 154
 155         get_preference("startpage", startpage);
 156         if (strlen(startpage)==0) {
 157                 strcpy(startpage, "/dotskip&room=_BASEROOM_");
 158                 set_preference("startpage", startpage);
 159         }
 160
 161         http_redirect(startpage);
 162 }
 163
 164
 165 /*
 166  * Disconnect from the Citadel server, and end this WebCit session
 167  */
 168 void end_webcit_session(void) {
 169         serv_puts("QUIT");
 170         WC->killthis = 1;
 171         /* close() of citadel socket will be done by do_housekeeping() */
 172 }
 173
 174
 175 void do_logout(void)
 176 {
 177         char buf[SIZ];
 178
 179         strcpy(WC->wc_username, "");
 180         strcpy(WC->wc_password, "");
 181         strcpy(WC->wc_roomname, "");
 182
 183         /* Calling output_headers() this way causes the cookies to be un-set */
 184         output_headers(1, 1, 0, 1, 0, 0, 0);
 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  * validate new users
 214  */
 215 void validate(void)
 216 {
 217         char cmd[SIZ];
 218         char user[SIZ];
 219         char buf[SIZ];
 220         int a;
 221
 222         output_headers(1, 1, 0, 0, 0, 0, 0);
 223
 224         strcpy(buf, bstr("user"));
 225         if (strlen(buf) > 0)
 226                 if (strlen(bstr("axlevel")) > 0) {
 227                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 228                         serv_gets(buf);
 229                         if (buf[0] != '2') {
 230                                 wprintf("<b>%s</b><br />\n", &buf[4]);
 231                         }
 232                 }
 233         serv_puts("GNUR");
 234         serv_gets(buf);
 235
 236         if (buf[0] != '3') {
 237                 wprintf("<b>%s</b><br />\n", &buf[4]);
 238                 wDumpContent(1);
 239                 return;
 240         }
 241
 242         wprintf("<center>");
 243         do_template("beginbox_nt");
 244         wprintf("<center>");
 245
 246         strcpy(user, &buf[4]);
 247         serv_printf("GREG %s", user);
 248         serv_gets(cmd);
 249         if (cmd[0] == '1') {
 250                 a = 0;
 251                 do {
 252                         serv_gets(buf);
 253                         ++a;
 254                         if (a == 1)
 255                                 wprintf("User #%s<br /><H1>%s</H1>",
 256                                         buf, &cmd[4]);
 257                         if (a == 2)
 258                                 wprintf("PW: %s<br />\n", buf);
 259                         if (a == 3)
 260                                 wprintf("%s<br />\n", buf);
 261                         if (a == 4)
 262                                 wprintf("%s<br />\n", buf);
 263                         if (a == 5)
 264                                 wprintf("%s, ", buf);
 265                         if (a == 6)
 266                                 wprintf("%s ", buf);
 267                         if (a == 7)
 268                                 wprintf("%s<br />\n", buf);
 269                         if (a == 8)
 270                                 wprintf("%s<br />\n", buf);
 271                         if (a == 9)
 272                                 wprintf("Current access level: %d (%s)\n",
 273                                         atoi(buf), axdefs[atoi(buf)]);
 274                 } while (strcmp(buf, "000"));
 275         } else {
 276                 wprintf("<H1>%s</H1>%s<br />\n", user, &cmd[4]);
 277         }
 278
 279         wprintf("<hr />Select access level for this user:<br />\n");
 280         for (a = 0; a <= 6; ++a) {
 281                 wprintf("<A HREF=\"/validate&user=");
 282                 urlescputs(user);
 283                 wprintf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 284                         a, axdefs[a]);
 285         }
 286         wprintf("<br />\n");
 287
 288         wprintf("</CENTER>\n");
 289         do_template("endbox");
 290         wprintf("</CENTER>\n");
 291         wDumpContent(1);
 292 }
 293
 294
 295
 296 /*
 297  * Display form for registration.
 298  * (Set during_login to 1 if this registration is being performed during
 299  * new user login and will require chaining to the proper screen.)
 300  */
 301 void display_reg(int during_login)
 302 {
 303         long vcard_msgnum;
 304
 305         if (goto_config_room() != 0) {
 306                 if (during_login) do_welcome();
 307                 else display_main_menu();
 308                 return;
 309         }
 310
 311         vcard_msgnum = locate_user_vcard(WC->wc_username, -1);
 312         if (vcard_msgnum < 0L) {
 313                 if (during_login) do_welcome();
 314                 else display_main_menu();
 315                 return;
 316         }
 317
 318         if (during_login) {
 319                 do_edit_vcard(vcard_msgnum, "1", "/do_welcome");
 320         }
 321         else {
 322                 do_edit_vcard(vcard_msgnum, "1", "/display_main_menu");
 323         }
 324
 325 }
 326
 327
 328
 329
 330 /*
 331  * display form for changing your password
 332  */
 333 void display_changepw(void)
 334 {
 335         char buf[SIZ];
 336
 337         output_headers(1, 1, 0, 0, 0, 0, 0);
 338
 339         svprintf("BOXTITLE", WCS_STRING, "Change your password");
 340         do_template("beginbox");
 341         wprintf("<CENTER><br />");
 342         serv_puts("MESG changepw");
 343         serv_gets(buf);
 344         if (buf[0] == '1') {
 345                 fmout(NULL, "CENTER");
 346         }
 347
 348         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 349         wprintf("<CENTER>"
 350                 "<table border=\"0\" cellspacing=\"5\" cellpadding=\"5\" "
 351                 "BGCOLOR=\"#EEEEEE\">"
 352                 "<TR><TD>Enter new password:</TD>\n");
 353         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 354         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 355         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 356         wprintf("</TABLE><br />\n");
 357         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n"
 358                 "&nbsp;"
 359                 "<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 360         wprintf("</CENTER>\n");
 361         do_template("endbox");
 362         wDumpContent(1);
 363 }
 364
 365 /*
 366  * change password
 367  */
 368 void changepw(void)
 369 {
 370         char buf[SIZ];
 371         char newpass1[32], newpass2[32];
 372
 373         if (strcmp(bstr("action"), "Change")) {
 374                 strcpy(WC->ImportantMessage,
 375                         "Cancelled.  Password was not changed.");
 376                 display_main_menu();
 377                 return;
 378         }
 379         strcpy(newpass1, bstr("newpass1"));
 380         strcpy(newpass2, bstr("newpass2"));
 381
 382         if (strcasecmp(newpass1, newpass2)) {
 383                 strcpy(WC->ImportantMessage,
 384                         "They don't match.  Password was not changed.");
 385                 display_main_menu();
 386                 return;
 387         }
 388         serv_printf("SETP %s", newpass1);
 389         serv_gets(buf);
 390         strcpy(WC->ImportantMessage, &buf[4]);
 391         display_main_menu();
 392 }