webcit/auth.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles authentication of users to a Citadel server.
   5  *
   6  */
   7
   8
   9 #include <ctype.h>
  10 #include <stdlib.h>
  11 #include <unistd.h>
  12 #include <stdio.h>
  13 #include <fcntl.h>
  14 #include <signal.h>
  15 #include <sys/types.h>
  16 #include <sys/wait.h>
  17 #include <sys/socket.h>
  18 #include <sys/time.h>
  19 #include <limits.h>
  20 #include <netinet/in.h>
  21 #include <netdb.h>
  22 #include <string.h>
  23 #include <pwd.h>
  24 #include <errno.h>
  25 #include <stdarg.h>
  26 #include <pthread.h>
  27 #include <signal.h>
  28 #include "webcit.h"
  29
  30 char *axdefs[] =
  31 {
  32         "Deleted",
  33         "New User",
  34         "Problem User",
  35         "Local User",
  36         "Network User",
  37         "Preferred User",
  38         "Aide"
  39 };
  40
  41 /*
  42  * Display the login screen
  43  */
  44 void display_login(char *mesg)
  45 {
  46         char buf[SIZ];
  47
  48         output_headers(1, 1, 2, 0, 0, 0, 0);
  49         //wprintf("<div id=\"content\">\n");
  50         wprintf("<div style=\"position:absolute; top:20px; left:20px; right:20px\">\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                 if (strlen(bstr("pass")) == 0) {
 129                         display_login("Blank passwords are not allowed.");
 130                         return;
 131                 }
 132                 serv_printf("NEWU %s", bstr("name"));
 133                 serv_gets(buf);
 134                 if (buf[0] == '2') {
 135                         become_logged_in(bstr("name"), bstr("pass"), buf);
 136                         serv_printf("SETP %s", bstr("pass"));
 137                         serv_gets(buf);
 138                 } else {
 139                         display_login(&buf[4]);
 140                         return;
 141                 }
 142         }
 143         if (WC->logged_in) {
 144                 if (WC->need_regi) {
 145                         display_reg(1);
 146                 } else {
 147                         do_welcome();
 148                 }
 149         } else {
 150                 display_login("Your password was not accepted.");
 151         }
 152
 153 }
 154
 155 void do_welcome(void)
 156 {
 157         char buf[SIZ];
 158         FILE *fp;
 159         int i;
 160
 161         /*
 162          * See if we have to run the first-time setup wizard
 163          */
 164         if (!setup_wizard) {
 165                 sprintf(wizard_filename, "setupwiz.%s.%s", ctdlhost, ctdlport);
 166                 for (i=0; i<strlen(wizard_filename); ++i) {
 167                         if (    (wizard_filename[i]==' ')
 168                                 || (wizard_filename[i] == '/')
 169                         ) {
 170                                 wizard_filename[i] = '_';
 171                         }
 172                 }
 173
 174                 fp = fopen(wizard_filename, "r");
 175                 if (fp != NULL) {
 176                         fgets(buf, sizeof buf, fp);
 177                         buf[strlen(buf)-1] = 0;
 178                         fclose(fp);
 179                         if (atoi(buf) != serv_info.serv_rev_level) {
 180                                 setup_wizard = 1;       /* already run */
 181                         }
 182                 }
 183         }
 184
 185         if (!setup_wizard) {
 186                 http_redirect("/setup_wizard");
 187         }
 188
 189         /*
 190          * Go to the user's preferred start page
 191          */
 192         get_preference("startpage", buf);
 193         if (strlen(buf)==0) {
 194                 strcpy(buf, "/dotskip&room=_BASEROOM_");
 195                 set_preference("startpage", buf);
 196         }
 197         http_redirect(buf);
 198 }
 199
 200
 201 /*
 202  * Disconnect from the Citadel server, and end this WebCit session
 203  */
 204 void end_webcit_session(void) {
 205         serv_puts("QUIT");
 206         WC->killthis = 1;
 207         /* close() of citadel socket will be done by do_housekeeping() */
 208 }
 209
 210
 211 void do_logout(void)
 212 {
 213         char buf[SIZ];
 214
 215         strcpy(WC->wc_username, "");
 216         strcpy(WC->wc_password, "");
 217         strcpy(WC->wc_roomname, "");
 218
 219         /* Calling output_headers() this way causes the cookies to be un-set */
 220         output_headers(1, 1, 0, 1, 0, 0, 0);
 221
 222         wprintf("<center>");
 223         serv_puts("MESG goodbye");
 224         serv_gets(buf);
 225
 226         if (WC->serv_sock >= 0) {
 227                 if (buf[0] == '1') {
 228                         fmout(NULL, "CENTER");
 229                 } else {
 230                         wprintf("Goodbye\n");
 231                 }
 232         }
 233         else {
 234                 wprintf("This program was unable to connect or stay "
 235                         "connected to the Citadel server.  Please report "
 236                         "this problem to your system administrator."
 237                 );
 238         }
 239
 240         wprintf("<hr /><a href=\"/\">Log in again</A>&nbsp;&nbsp;&nbsp;"
 241                 "<a href=\"javascript:window.close();\">Close window</A>"
 242                 "</center>\n");
 243         wDumpContent(2);
 244         end_webcit_session();
 245 }
 246
 247
 248 /*
 249  * validate new users
 250  */
 251 void validate(void)
 252 {
 253         char cmd[SIZ];
 254         char user[SIZ];
 255         char buf[SIZ];
 256         int a;
 257
 258         output_headers(1, 1, 2, 0, 0, 0, 0);
 259         wprintf("<div id=\"banner\">\n"
 260                 "<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
 261                 "<SPAN CLASS=\"titlebar\">Validate new users</SPAN>"
 262                 "</TD></TR></TABLE>\n"
 263                 "</div>\n<div id=\"content\">\n"
 264         );
 265
 266         strcpy(buf, bstr("user"));
 267         if (strlen(buf) > 0)
 268                 if (strlen(bstr("axlevel")) > 0) {
 269                         serv_printf("VALI %s|%s", buf, bstr("axlevel"));
 270                         serv_gets(buf);
 271                         if (buf[0] != '2') {
 272                                 wprintf("<b>%s</b><br />\n", &buf[4]);
 273                         }
 274                 }
 275         serv_puts("GNUR");
 276         serv_gets(buf);
 277
 278         if (buf[0] != '3') {
 279                 wprintf("<b>%s</b><br />\n", &buf[4]);
 280                 wDumpContent(1);
 281                 return;
 282         }
 283
 284         wprintf("<div id=\"fix_scrollbar_bug\">"
 285                 "<table border=0 width=100%% bgcolor=\"#ffffff\"><tr><td>\n");
 286         wprintf("<center>");
 287
 288         strcpy(user, &buf[4]);
 289         serv_printf("GREG %s", user);
 290         serv_gets(cmd);
 291         if (cmd[0] == '1') {
 292                 a = 0;
 293                 do {
 294                         serv_gets(buf);
 295                         ++a;
 296                         if (a == 1)
 297                                 wprintf("User #%s<br /><H1>%s</H1>",
 298                                         buf, &cmd[4]);
 299                         if (a == 2)
 300                                 wprintf("PW: %s<br />\n", buf);
 301                         if (a == 3)
 302                                 wprintf("%s<br />\n", buf);
 303                         if (a == 4)
 304                                 wprintf("%s<br />\n", buf);
 305                         if (a == 5)
 306                                 wprintf("%s, ", buf);
 307                         if (a == 6)
 308                                 wprintf("%s ", buf);
 309                         if (a == 7)
 310                                 wprintf("%s<br />\n", buf);
 311                         if (a == 8)
 312                                 wprintf("%s<br />\n", buf);
 313                         if (a == 9)
 314                                 wprintf("Current access level: %d (%s)\n",
 315                                         atoi(buf), axdefs[atoi(buf)]);
 316                 } while (strcmp(buf, "000"));
 317         } else {
 318                 wprintf("<H1>%s</H1>%s<br />\n", user, &cmd[4]);
 319         }
 320
 321         wprintf("<hr />Select access level for this user:<br />\n");
 322         for (a = 0; a <= 6; ++a) {
 323                 wprintf("<A HREF=\"/validate&user=");
 324                 urlescputs(user);
 325                 wprintf("&axlevel=%d\">%s</A>&nbsp;&nbsp;&nbsp;\n",
 326                         a, axdefs[a]);
 327         }
 328         wprintf("<br />\n");
 329
 330         wprintf("</CENTER>\n");
 331         wprintf("</td></tr></table></div>\n");
 332         wDumpContent(1);
 333 }
 334
 335
 336
 337 /*
 338  * Display form for registration.
 339  * (Set during_login to 1 if this registration is being performed during
 340  * new user login and will require chaining to the proper screen.)
 341  */
 342 void display_reg(int during_login)
 343 {
 344         long vcard_msgnum;
 345
 346         if (goto_config_room() != 0) {
 347                 if (during_login) do_welcome();
 348                 else display_main_menu();
 349                 return;
 350         }
 351
 352         vcard_msgnum = locate_user_vcard(WC->wc_username, -1);
 353         if (vcard_msgnum < 0L) {
 354                 if (during_login) do_welcome();
 355                 else display_main_menu();
 356                 return;
 357         }
 358
 359         if (during_login) {
 360                 do_edit_vcard(vcard_msgnum, "1", "/do_welcome");
 361         }
 362         else {
 363                 do_edit_vcard(vcard_msgnum, "1", "/display_main_menu");
 364         }
 365
 366 }
 367
 368
 369
 370
 371 /*
 372  * display form for changing your password
 373  */
 374 void display_changepw(void)
 375 {
 376         char buf[SIZ];
 377
 378         output_headers(1, 1, 2, 0, 0, 0, 0);
 379         wprintf("<div id=\"banner\">\n"
 380                 "<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
 381                 "<SPAN CLASS=\"titlebar\">Change your password</SPAN>"
 382                 "</TD></TR></TABLE>\n"
 383                 "</div>\n<div id=\"content\">\n"
 384         );
 385
 386         if (strlen(WC->ImportantMessage) > 0) {
 387                 do_template("beginbox_nt");
 388                 wprintf("<SPAN CLASS=\"errormsg\">"
 389                         "%s</SPAN><br />\n", WC->ImportantMessage);
 390                 do_template("endbox");
 391                 strcpy(WC->ImportantMessage, "");
 392         }
 393
 394         wprintf("<div id=\"fix_scrollbar_bug\">"
 395                 "<table border=0 width=100%% bgcolor=\"#ffffff\"><tr><td>\n");
 396
 397         wprintf("<CENTER><br />");
 398         serv_puts("MESG changepw");
 399         serv_gets(buf);
 400         if (buf[0] == '1') {
 401                 fmout(NULL, "CENTER");
 402         }
 403
 404         wprintf("<form name=\"changepwform\" action=\"changepw\" method=\"post\">\n");
 405         wprintf("<CENTER>"
 406                 "<table border=\"0\" cellspacing=\"5\" cellpadding=\"5\" "
 407                 "BGCOLOR=\"#EEEEEE\">"
 408                 "<TR><TD>Enter new password:</TD>\n");
 409         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 410         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 411         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 412
 413         wprintf("</TABLE><br />\n");
 414         wprintf("<INPUT type=\"submit\" name=\"action\" value=\"Change\">"
 415                 "&nbsp;"
 416                 "<INPUT type=\"submit\" name=\"action\" value=\"Cancel\">\n");
 417         wprintf("</form></center>\n");
 418         wprintf("</td></tr></table></div>\n");
 419         wDumpContent(1);
 420 }
 421
 422 /*
 423  * change password
 424  */
 425 void changepw(void)
 426 {
 427         char buf[SIZ];
 428         char newpass1[32], newpass2[32];
 429
 430         if (strcmp(bstr("action"), "Change")) {
 431                 strcpy(WC->ImportantMessage,
 432                         "Cancelled.  Password was not changed.");
 433                 display_main_menu();
 434                 return;
 435         }
 436
 437         strcpy(newpass1, bstr("newpass1"));
 438         strcpy(newpass2, bstr("newpass2"));
 439
 440         if (strcasecmp(newpass1, newpass2)) {
 441                 strcpy(WC->ImportantMessage,
 442                         "They don't match.  Password was not changed.");
 443                 display_changepw();
 444                 return;
 445         }
 446
 447         if (strlen(newpass1) == 0) {
 448                 strcpy(WC->ImportantMessage,
 449                         "Blank passwords are not allowed.");
 450                 display_changepw();
 451                 return;
 452         }
 453
 454         serv_printf("SETP %s", newpass1);
 455         serv_gets(buf);
 456         sprintf(WC->ImportantMessage, "%s", &buf[4]);
 457         if (buf[0] == '2') {
 458                 safestrncpy(WC->wc_password, buf, sizeof WC->wc_password);
 459                 display_main_menu();
 460         }
 461         else {
 462                 display_changepw();
 463         }
 464 }