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         svprintf("hello", WCS_SERVCMD, "MESG hello");
  57
  58         do_template("login");
  59
  60         clear_local_substs();
  61         wDumpContent(0);        /* No menu here; not logged in yet! */
  62 }
  63
  64
  65
  66
  67 /*
  68  * This function needs to get called whenever the session changes from
  69  * not-logged-in to logged-in, either by an explicit login by the user or
  70  * by a timed-out session automatically re-establishing with a little help
  71  * from the browser cookie.  Either way, we need to load access controls and
  72  * preferences from the server.
  73  */
  74 void become_logged_in(char *user, char *pass, char *serv_response)
  75 {
  76         char buf[SIZ];
  77
  78         WC->logged_in = 1;
  79         extract(WC->wc_username, &serv_response[4], 0);
  80         strcpy(WC->wc_password, pass);
  81         WC->axlevel = extract_int(&serv_response[4], 1);
  82         if (WC->axlevel >= 6) {
  83                 WC->is_aide = 1;
  84         }
  85
  86         load_preferences();
  87
  88         serv_puts("CHEK");
  89         serv_gets(buf);
  90         if (buf[0] == '2') {
  91                 WC->new_mail = extract_int(&buf[4], 0);
  92                 WC->need_regi = extract_int(&buf[4], 1);
  93                 WC->need_vali = extract_int(&buf[4], 2);
  94                 extract(WC->cs_inet_email, &buf[4], 3);
  95         }
  96 }
  97
  98
  99 void do_login(void)
 100 {
 101         char buf[SIZ];
 102
 103         if (!strcasecmp(bstr("action"), "Exit")) {
 104                 do_logout();
 105                 return;
 106         }
 107         if (!strcasecmp(bstr("action"), "Login")) {
 108                 serv_printf("USER %s", bstr("name"));
 109                 serv_gets(buf);
 110                 if (buf[0] == '3') {
 111                         serv_printf("PASS %s", bstr("pass"));
 112                         serv_gets(buf);
 113                         if (buf[0] == '2') {
 114                                 become_logged_in(bstr("name"),
 115                                                  bstr("pass"), buf);
 116                         } else {
 117                                 display_login(&buf[4]);
 118                                 return;
 119                         }
 120                 } else {
 121                         display_login(&buf[4]);
 122                         return;
 123                 }
 124         }
 125         if (!strcasecmp(bstr("action"), "New User")) {
 126                 serv_printf("NEWU %s", bstr("name"));
 127                 serv_gets(buf);
 128                 if (buf[0] == '2') {
 129                         become_logged_in(bstr("name"), bstr("pass"), buf);
 130                         serv_printf("SETP %s", bstr("pass"));
 131                         serv_gets(buf);
 132                 } else {
 133                         display_login(&buf[4]);
 134                         return;
 135                 }
 136         }
 137         if (WC->logged_in) {
 138                 if (WC->need_regi) {
 139                         display_reg(1);
 140                 } else {
 141                         do_welcome();
 142                 }
 143         } else {
 144                 display_login("Your password was not accepted.");
 145         }
 146
 147 }
 148
 149 void do_welcome(void)
 150 {
 151         char startpage[SIZ];
 152
 153         get_preference("startpage", startpage);
 154         if (strlen(startpage)==0) {
 155                 strcpy(startpage, "/dotskip&room=_BASEROOM_");
 156                 set_preference("startpage", startpage);
 157         }
 158
 159         svprintf("STARTPAGE", WCS_STRING, startpage);
 160
 161         do_template("mainframeset");
 162         clear_local_substs();
 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);
 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("WC->axlevel")) > 0) {
 228                         serv_printf("VALI %s|%s", buf, bstr("WC->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         strcpy(user, &buf[4]);
 243         serv_printf("GREG %s", user);
 244         serv_gets(cmd);
 245         if (cmd[0] == '1') {
 246                 a = 0;
 247                 do {
 248                         serv_gets(buf);
 249                         ++a;
 250                         if (a == 1)
 251                                 wprintf("User #%s<BR><H1>%s</H1>",
 252                                         buf, &cmd[4]);
 253                         if (a == 2)
 254                                 wprintf("PW: %s<BR>\n", buf);
 255                         if (a == 3)
 256                                 wprintf("%s<BR>\n", buf);
 257                         if (a == 4)
 258                                 wprintf("%s<BR>\n", buf);
 259                         if (a == 5)
 260                                 wprintf("%s, ", buf);
 261                         if (a == 6)
 262                                 wprintf("%s ", buf);
 263                         if (a == 7)
 264                                 wprintf("%s<BR>\n", buf);
 265                         if (a == 8)
 266                                 wprintf("%s<BR>\n", buf);
 267                         if (a == 9)
 268                                 wprintf("Current access level: %d (%s)\n",
 269                                         atoi(buf), axdefs[atoi(buf)]);
 270                 } while (strcmp(buf, "000"));
 271         } else {
 272                 wprintf("<H1>%s</H1>%s<BR>\n", user, &cmd[4]);
 273         }
 274
 275         wprintf("<CENTER><TABLE border><CAPTION>Select access level:");
 276         wprintf("</CAPTION><TR>");
 277         for (a = 0; a <= 6; ++a) {
 278                 wprintf("<TD><A HREF=\"/validate&user=");
 279                 urlescputs(user);
 280                 wprintf("&WC->axlevel=%d\">%s</A></TD>\n",
 281                         a, axdefs[a]);
 282         }
 283         wprintf("</TR></TABLE><CENTER><BR>\n");
 284         wDumpContent(1);
 285 }
 286
 287
 288
 289 /*
 290  * Display form for registration.
 291  * (Set during_login to 1 if this registration is being performed during
 292  * new user login and will require chaining to the proper screen.)
 293  */
 294 void display_reg(int during_login)
 295 {
 296         long vcard_msgnum;
 297
 298         if (goto_config_room() != 0) {
 299                 if (during_login) do_welcome();
 300                 else display_main_menu();
 301                 return;
 302         }
 303
 304         vcard_msgnum = locate_user_vcard(WC->wc_username, -1);
 305         if (vcard_msgnum < 0L) {
 306                 if (during_login) do_welcome();
 307                 else display_main_menu();
 308                 return;
 309         }
 310
 311         if (during_login) {
 312                 do_edit_vcard(vcard_msgnum, "1", "/do_welcome");
 313         }
 314         else {
 315                 do_edit_vcard(vcard_msgnum, "1", "/display_main_menu");
 316         }
 317
 318 }
 319
 320
 321
 322
 323 /*
 324  * display form for changing your password
 325  */
 326 void display_changepw(void)
 327 {
 328         char buf[SIZ];
 329
 330         output_headers(3);
 331
 332         svprintf("BOXTITLE", WCS_STRING, "Change your password");
 333         do_template("beginbox");
 334         wprintf("<CENTER>");
 335         serv_puts("MESG changepw");
 336         serv_gets(buf);
 337         if (buf[0] == '1') {
 338                 fmout(NULL);
 339         }
 340
 341         wprintf("<FORM ACTION=\"changepw\" METHOD=\"POST\">\n");
 342         wprintf("<CENTER><TABLE border><TR><TD>Enter new password:</TD>\n");
 343         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass1\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 344         wprintf("<TR><TD>Enter it again to confirm:</TD>\n");
 345         wprintf("<TD><INPUT TYPE=\"password\" NAME=\"newpass2\" VALUE=\"\" MAXLENGTH=\"20\"></TD></TR>\n");
 346         wprintf("</TABLE>\n");
 347         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Change\">\n");
 348         wprintf("<INPUT type=\"submit\" NAME=\"action\" VALUE=\"Cancel\">\n");
 349         wprintf("</CENTER>\n");
 350         do_template("endbox");
 351         wDumpContent(1);
 352 }
 353
 354 /*
 355  * change password
 356  */
 357 void changepw(void)
 358 {
 359         char buf[SIZ];
 360         char newpass1[32], newpass2[32];
 361
 362         if (strcmp(bstr("action"), "Change")) {
 363                 display_error("Cancelled.  Password was not changed.");
 364                 return;
 365         }
 366         strcpy(newpass1, bstr("newpass1"));
 367         strcpy(newpass2, bstr("newpass2"));
 368
 369         if (strcasecmp(newpass1, newpass2)) {
 370                 display_error("They don't match.  Password was not changed.");
 371                 return;
 372         }
 373         serv_printf("SETP %s", newpass1);
 374         serv_gets(buf);
 375         if (buf[0] == '2')
 376                 display_success(&buf[4]);
 377         else
 378                 display_error(&buf[4]);
 379 }