webcit/listsub.c

   1 /*
   2  * $Id$
   3  *
   4  * Web forms for handling mailing list subscribe/unsubscribe requests.
   5  *
   6  */
   7
   8 #include <ctype.h>
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <sys/types.h>
  15 #include <sys/wait.h>
  16 #include <sys/socket.h>
  17 #include <sys/time.h>
  18 #include <limits.h>
  19 #include <netinet/in.h>
  20 #include <netdb.h>
  21 #include <string.h>
  22 #include <pwd.h>
  23 #include <errno.h>
  24 #include <stdarg.h>
  25 #include <pthread.h>
  26 #include <signal.h>
  27 #include "webcit.h"
  28
  29
  30
  31 /*
  32  * List subscription handling
  33  */
  34 void do_listsub(void)
  35 {
  36         char cmd[SIZ];
  37         char room[SIZ];
  38         char token[SIZ];
  39         char email[SIZ];
  40         char subtype[SIZ];
  41
  42         char buf[SIZ];
  43         int self;
  44         char sroom[SIZ];
  45
  46         strcpy(WC->wc_username, "");
  47         strcpy(WC->wc_password, "");
  48         strcpy(WC->wc_roomname, "");
  49
  50         wprintf("<HTML><HEAD><TITLE>List subscription</TITLE></HEAD><BODY>\n");
  51
  52         strcpy(cmd, bstr("cmd"));
  53         strcpy(room, bstr("room"));
  54         strcpy(token, bstr("token"));
  55         strcpy(email, bstr("email"));
  56         strcpy(subtype, bstr("subtype"));
  57
  58         wprintf("<CENTER>"
  59                 "<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
  60                 "<SPAN CLASS=\"titlebar\">List subscribe/unsubscribe</SPAN>\n"
  61                 "</TD></TR></TABLE><br />\n"
  62         );
  63
  64         /*
  65          * Subscribe command
  66          */
  67         if (!strcasecmp(cmd, "subscribe")) {
  68                 serv_printf("SUBS subscribe|%s|%s|%s|%s/listsub",
  69                         room,
  70                         email,
  71                         subtype,
  72                         WC->http_host
  73                 );
  74                 serv_gets(buf);
  75                 if (buf[0] == '2') {
  76                         wprintf("<CENTER><H1>Confirmation request sent</H1>"
  77                                 "You are subscribing <TT>");
  78                         escputs(email);
  79                         wprintf("</TT> to the &quot;");
  80                         escputs(room);
  81                         wprintf("&quot; mailing list.  The listserver has "
  82                                 "sent you an e-mail with one additional "
  83                                 "Web link for you to click on to confirm "
  84                                 "your subscription.  This extra step is for "
  85                                 "your protection, as it prevents others from "
  86                                 "being able to subscribe you to lists "
  87                                 "without your consent.<br /><br />"
  88                                 "Please click on the link which is being "
  89                                 "e-mailed to you and your subscription will "
  90                                 "be confirmed.<br />\n"
  91                                 "<A HREF=\"/listsub\">Back...</A></CENTER>\n"
  92                         );
  93                 }
  94                 else {
  95                         wprintf("<FONT SIZE=+1><B>ERROR: %s</B>"
  96                                 "</FONT><br /><br />\n",
  97                                 &buf[4]);
  98                         goto FORM;
  99                 }
 100         }
 101
 102         /*
 103          * Unsubscribe command
 104          */
 105         else if (!strcasecmp(cmd, "unsubscribe")) {
 106                 serv_printf("SUBS unsubscribe|%s|%s|%s/listsub",
 107                         room,
 108                         email,
 109                         WC->http_host
 110                 );
 111                 serv_gets(buf);
 112                 if (buf[0] == '2') {
 113                         wprintf("<CENTER><H1>Confirmation request sent</H1>"
 114                                 "You are unsubscribing <TT>");
 115                         escputs(email);
 116                         wprintf("</TT> from the &quot;");
 117                         escputs(room);
 118                         wprintf("&quot; mailing list.  The listserver has "
 119                                 "sent you an e-mail with one additional "
 120                                 "Web link for you to click on to confirm "
 121                                 "your unsubscription.  This extra step is for "
 122                                 "your protection, as it prevents others from "
 123                                 "being able to unsubscribe you from "
 124                                 "lists without your consent.<br /><br />"
 125                                 "Please click on the link which is being "
 126                                 "e-mailed to you and your unsubscription will "
 127                                 "be confirmed.<br />\n"
 128                                 "<A HREF=\"/listsub\">Back...</A></CENTER>\n"
 129                         );
 130                 }
 131                 else {
 132                         wprintf("<FONT SIZE=+1><B>ERROR: %s</B>"
 133                                 "</FONT><br /><br />\n",
 134                                 &buf[4]);
 135                         goto FORM;
 136                 }
 137         }
 138
 139         /*
 140          * Confirm command
 141          */
 142         else if (!strcasecmp(cmd, "confirm")) {
 143                 serv_printf("SUBS confirm|%s|%s",
 144                         room,
 145                         token
 146                 );
 147                 serv_gets(buf);
 148                 if (buf[0] == '2') {
 149                         wprintf("<CENTER><H1>Confirmation successful!</H1>");
 150                 }
 151                 else {
 152                         wprintf("<CENTER><H1>Confirmation failed.</H1>"
 153                                 "This could mean one of two things:<UL>\n"
 154                                 "<LI>You waited too long to confirm your "
 155                                 "subscribe/unsubscribe request (the "
 156                                 "confirmation link is only valid for three "
 157                                 "days)\n<LI>You have <i>already</i> "
 158                                 "successfully confirmed your "
 159                                 "subscribe/unsubscribe request and are "
 160                                 "attempting to do it again.</UL>\n"
 161                                 "The error returned by the server was: "
 162                         );
 163                 }
 164                 wprintf("%s</CENTER><br />\n", &buf[4]);
 165         }
 166
 167         /*
 168          * Any other (invalid) command causes the form to be displayed
 169          */
 170         else {
 171 FORM:           wprintf("<FORM METHOD=\"GET\" ACTION=\"/listsub\">\n"
 172                         "<TABLE BORDER=0>\n"
 173                 );
 174
 175                 wprintf("<TR><TD>Name of list</TD><TD>"
 176                         "<SELECT NAME=\"room\" SIZE=1>\n");
 177
 178                 serv_puts("LPRM");
 179                 serv_gets(buf);
 180                 if (buf[0] == '1') {
 181                         while (serv_gets(buf), strcmp(buf, "000")) {
 182                                 extract(sroom, buf, 0);
 183                                 self = extract_int(buf, 4) & QR2_SELFLIST ;
 184                                 if (self) {
 185                                         wprintf("<OPTION VALUE=\"");
 186                                         escputs(sroom);
 187                                         wprintf("\">");
 188                                         escputs(sroom);
 189                                         wprintf("</OPTION>\n");
 190                                 }
 191                         }
 192                 }
 193                 wprintf("</SELECT>"
 194                         "</TD></TR>\n");
 195
 196                 wprintf("<TR><TD>Your e-mail address</TD><TD>"
 197                         "<INPUT TYPE=\"text\" NAME=\"email\" "
 198                         "VALUE=\""
 199                 );
 200                 escputs(email);
 201                 wprintf("\" MAXLENGTH=128></TD></TR>\n");
 202
 203                 wprintf("</TABLE>"
 204                         "(If subscribing) preferred format: "
 205                         "<INPUT TYPE=\"radio\" NAME=\"subtype\""
 206                         "VALUE=\"list\">One message at a time&nbsp; "
 207                         "<INPUT TYPE=\"radio\" NAME=\"subtype\""
 208                         "VALUE=\"digest\" CHECKED>Digest format&nbsp; "
 209                         "<br />\n"
 210                         "<INPUT TYPE=\"submit\" NAME=\"cmd\""
 211                         " VALUE=\"subscribe\">\n"
 212                         "<INPUT TYPE=\"submit\" NAME=\"cmd\""
 213                         " VALUE=\"unsubscribe\">\n"
 214                         "</FORM>\n"
 215                 );
 216
 217                 wprintf("<br />When you attempt to subscribe or unsubscribe to "
 218                         "a mailing list, you will receive an e-mail containing"
 219                         " one additional web link to click on for final "
 220                         "confirmation.  This extra step is for your "
 221                         "protection, as it prevents others from being able to "
 222                         "subscribe or unsubscribe you to lists.<br />\n"
 223                 );
 224
 225         }
 226
 227         /*
 228          * Since this isn't part of a normal Citadel session, we bail right
 229          * out without maintaining any state.
 230          */
 231         /* wDumpContent(2); */
 232         wprintf("</BODY></HTML>\n");
 233         end_webcit_session();
 234 }