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/* $Cambridge: hermes/src/prayer/cmd/cmd_spam.c,v 1.4 2008/09/17 17:20:25 dpc22 Exp $ */
/************************************************
* Prayer - a Webmail Interface *
************************************************/
/* Copyright (c) University of Cambridge 2000 - 2008 */
/* See the file NOTICE for conditions of use and distribution. */
#include "prayer_session.h"
static void generate_form(struct session *session)
{
struct template_vals *tvals = session->template_vals;
struct request *request = session->request;
struct account *account = session->account;
struct buffer *b = request->write_buffer;
unsigned long threshold =
(account->spam_threshold_valid) ? account->spam_threshold : 10;
template_vals_ulong(tvals, "spam_threshold", threshold);
if (account->spam_enabled)
template_vals_ulong(tvals, "spam_enabled", 1);
if (session->sieved_server)
template_vals_ulong(tvals, "using_sieve", 1);
if (account->spam_purge_enabled)
template_vals_ulong(tvals, "spam_purge_enabled", 1);
template_vals_ulong(tvals, "spam_purge_timeout",
account->spam_purge_timeout);
if (account->spam_whitelist && account->spam_whitelist[0])
template_vals_string(tvals, "spam_whitelist", account->spam_whitelist);
session_seed_template(session, tvals);
template_expand("spam", tvals, b);
response_html(request, 200); /* Success */
}
static void generate_error(struct session *session)
{
struct template_vals *tvals = session->template_vals;
struct account *account = session->account;
struct request *request = session->request;
char *msg = account_fetch_message(account);
struct buffer *b = request->write_buffer;
if (!(msg && msg[0]))
msg = "Unable to check mail processing status";
template_vals_string(tvals, "msg", msg);
session_seed_template(session, tvals);
template_expand("spam_fail", tvals, b);
response_html(request, 200);
}
/* Remove extraneous whitespace from each line in whitelist */
static char *
normalise_whitelist(char *list, struct pool *pool)
{
struct buffer *b = buffer_create(pool, 64);
char *tmp = pool_strdup(pool, list); /* Scratch copy */
char *s;
while ((s=string_get_line(&tmp))) {
if ((s=string_trim_whitespace(s)) && s[0]) {
bputs(b, s);
bputs(b, ""CRLF);
}
}
return(buffer_fetch(b, 0, buffer_size(b), NIL));
}
/* Check that addresslist consists of one valid address per line
(wildcard characters are allowed in addresses) */
static BOOL
validate_whitelist(struct session *session, char *list, struct pool *pool)
{
char *tmp = pool_strdup(pool, list); /* Scratch copy */
char *s;
ADDRESS *addr;
while ((s=string_get_line(&tmp))) {
if ((s=string_trim_whitespace(s)) && s[0]) {
addr = addr_parse(pool, s, "");
if (!addr) {
session_message(session, "Invalid address: %s", s);
return(NIL);
}
if (addr->next) {
session_message(session,
"Single address on each line please: %s", s);
mail_free_address(&addr);
return(NIL);
}
mail_free_address(&addr);
}
}
return(T);
}
void cmd_spam(struct session *session)
{
struct config *config = session->config;
struct request *request = session->request;
struct assoc *h = NIL;
struct account *account = session->account;
char *s, *t;
if (request->method != POST) {
if (!account_mail_check(account, request->pool))
generate_error(session);
else
generate_form(session);
return;
}
/* Form post */
request_decode_form(request);
h = request->form;
if (assoc_lookup(h, "sub_cancel")) {
session_redirect(session, request, "manage");
return;
}
s = assoc_lookup(h, "spam_threshold");
if (!(s && string_isnumber(s) && (atoi(s) > 0))) {
session_message(session,
"Threshold must be a number greater than zero");
generate_form(session);
return;
}
account->spam_enabled = assoc_lookup(h, "sub_enable") ? T : NIL;
account->spam_threshold = atoi(s);
account->spam_threshold_valid = T;
/* Spam whitelist and purge currently only available to sieve users */
if (session->sieved_server) {
if ((t = assoc_lookup(h, "spam_whitelist"))) {
string_strdup(&account->spam_whitelist,
normalise_whitelist(t, request->pool));
if (!validate_whitelist(session, account->spam_whitelist,
request->pool)) {
generate_form(session);
return;
}
} else
string_strdup(&account->spam_whitelist, "");
t = assoc_lookup(h, "spam_purge_timeout");
if (!(t && string_isnumber(t) && (atoi(t) >= 0))) {
session_message(session,
"Purge time must be a non-negative integer");
generate_form(session);
return;
}
account->spam_purge_timeout = atoi(t);
account->spam_purge_enabled = assoc_lookup(h, "spam_purge") ? T : NIL;
if (account->spam_purge_enabled) {
session_log(session, "[cmd_spam] spam_purge enabled: %d days",
account->spam_purge_timeout);
} else {
session_log(session, "[cmd_spam] spam_purge disabled");
}
}
if (!account_mail_update(account, request->pool)) {
char *msg = account_fetch_message(account);
session_alert(session, "Failed to update spam filter: %s", msg);
session_log(session,
"[cmd_spam] Failed to update spam filter: %s", msg);
generate_form(session);
return;
}
if (account->spam_enabled &&
!folderlist_lookup(session->folderlist, "spam")) {
if (ml_create(session, session->stream,
session_mailbox(session, request->pool, "spam"))) {
if (config->dualuse)
folderlist_add(session->folderlist, "spam", NIL, NIL);
else
folderlist_add(session->folderlist, "spam", NIL, T);
} else
session_alert(session, "Failed to create spam folder");
}
session_message(session, "Updated junk email filtering");
session_redirect(session, request, "manage");
}
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