void
mail_free(struct mail *m)
{
if (m->attach != NULL)
attach_free(m->attach);
if (m->tags != NULL)
strb_destroy(&m->tags);
ARRAY_FREE(&m->wrapped);
m->wrapchar = '\0';
if (m->auxfree != NULL && m->auxdata != NULL)
m->auxfree(m->auxdata);
}
/* Check mail against next rule or part of expression. */
int
mail_match(struct mail_ctx *mctx, struct msg *msg, struct msgbuf *msgbuf)
{
struct account *a = mctx->account;
struct mail *m = mctx->mail;
struct expritem *ei;
struct replstrs *users;
int should_free, this = -1, error = MAIL_CONTINUE;
char desc[DESCBUFSIZE];
set_wrapped(m, ' ');
/* If blocked, check for msgs from parent. */
if (mctx->msgid != 0) {
if (msg == NULL || msg->id != mctx->msgid)
return (MAIL_BLOCKED);
mctx->msgid = 0;
if (msg->type != MSG_DONE)
fatalx("unexpected message");
if (msgbuf->buf != NULL && msgbuf->len != 0) {
strb_destroy(&m->tags);
m->tags = msgbuf->buf;
reset_tags(&m->tags);
}
ei = mctx->expritem;
switch (msg->data.error) {
case MATCH_ERROR:
return (MAIL_ERROR);
case MATCH_TRUE:
this = 1;
break;
case MATCH_FALSE:
this = 0;
break;
default:
fatalx("unexpected response");
}
apply_result(ei, &mctx->result, this);
goto next_expritem;
}
/* Check for completion and end of ruleset. */
if (mctx->done)
return (MAIL_DONE);
if (mctx->rule == NULL) {
switch (conf.impl_act) {
case DECISION_NONE:
log_warnx("%s: reached end of ruleset. no "
"unmatched-mail option; keeping mail", a->name);
m->decision = DECISION_KEEP;
break;
case DECISION_KEEP:
log_debug2("%s: reached end of ruleset. keeping mail",
a->name);
m->decision = DECISION_KEEP;
break;
case DECISION_DROP:
log_debug2("%s: reached end of ruleset. dropping mail",
a->name);
m->decision = DECISION_DROP;
break;
}
return (MAIL_DONE);
}
/* Expression not started. Start it. */
if (mctx->expritem == NULL) {
/* Start the expression. */
mctx->result = 0;
mctx->expritem = TAILQ_FIRST(mctx->rule->expr);
}
/* Check this expression item and adjust the result. */
ei = mctx->expritem;
/* Handle short-circuit evaluation. */
switch (ei->op) {
case OP_NONE:
break;
case OP_AND:
/* And and the result is already false. */
if (!mctx->result)
goto next_expritem;
break;
case OP_OR:
/* Or and the result is already true. */
if (mctx->result)
goto next_expritem;
break;
}
switch (ei->match->match(mctx, ei)) {
case MATCH_ERROR:
return (MAIL_ERROR);
case MATCH_PARENT:
return (MAIL_BLOCKED);
case MATCH_TRUE:
this = 1;
break;
case MATCH_FALSE:
this = 0;
break;
default:
fatalx("unexpected op");
}
apply_result(ei, &mctx->result, this);
ei->match->desc(ei, desc, sizeof desc);
log_debug3("%s: tried %s, result now %d", a->name, desc, mctx->result);
next_expritem:
/* Move to the next item. If there is one, then return. */
mctx->expritem = TAILQ_NEXT(mctx->expritem, entry);
if (mctx->expritem != NULL)
return (MAIL_CONTINUE);
log_debug3("%s: finished rule %u, result %d", a->name, mctx->rule->idx,
mctx->result);
/* If the result was false, skip to find the next rule. */
if (!mctx->result)
goto next_rule;
log_debug2("%s: matched to rule %u", a->name, mctx->rule->idx);
/*
* If this rule is stop, mark the context so when we get back after
* delivery we know to stop.
*/
if (mctx->rule->stop)
mctx->done = 1;
/* Handle nested rules. */
if (!TAILQ_EMPTY(&mctx->rule->rules)) {
log_debug2("%s: entering nested rules", a->name);
/*
* Stack the current rule (we are at the end of it so the
* the expritem must be NULL already).
*/
ARRAY_ADD(&mctx->stack, mctx->rule);
/* Continue with the first rule of the nested list. */
mctx->rule = TAILQ_FIRST(&mctx->rule->rules);
return (MAIL_CONTINUE);
}
mctx->matched = 1;
/* Handle lambda actions. */
if (mctx->rule->lambda != NULL) {
users = find_delivery_users(mctx, NULL, &should_free);
chained = MAXACTIONCHAIN;
if (fill_from_action(mctx,
mctx->rule, mctx->rule->lambda, users) != 0) {
if (should_free)
ARRAY_FREEALL(users);
return (MAIL_ERROR);
}
if (should_free)
ARRAY_FREEALL(users);
error = MAIL_DELIVER;
}
/* Fill the delivery action queue. */
if (!ARRAY_EMPTY(mctx->rule->actions)) {
chained = MAXACTIONCHAIN;
if (fill_from_strings(mctx,
mctx->rule, mctx->rule->actions) != 0)
return (MAIL_ERROR);
error = MAIL_DELIVER;
}
next_rule:
/* Move to the next rule. */
mctx->ruleidx = mctx->rule->idx; /* save last index */
mctx->rule = TAILQ_NEXT(mctx->rule, entry);
/* If no more rules, try to move up the stack. */
while (mctx->rule == NULL) {
if (ARRAY_EMPTY(&mctx->stack))
break;
log_debug2("%s: exiting nested rules", a->name);
mctx->rule = ARRAY_LAST(&mctx->stack);
mctx->rule = TAILQ_NEXT(mctx->rule, entry);
ARRAY_TRUNC(&mctx->stack, 1);
}
return (error);
}
