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/*
Copyright (c) 2004-2010 NFG Net Facilities Group BV support@nfg.nl
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dbmail.h"
#include "dm_cache.h"
#define THIS_MODULE "Cache"
/*
* cached raw message data
*/
#define T Cache_T
struct T {
u64_t id;
u64_t size;
Mem_T memdump;
Mem_T tmpdump;
int file_dumped;
};
/* */
T Cache_new(void)
{
int serr;
T C;
C = g_malloc0(sizeof(*C));
C->id = 0;
if (! (C->memdump = Mem_open())) {
serr = errno;
TRACE(TRACE_ERR,"Mem_open() failed [%s]", strerror(serr));
g_free(C);
errno = serr;
return NULL;
}
if (! (C->tmpdump = Mem_open())) {
serr = errno;
TRACE(TRACE_ERR,"Mem_open() failed [%s]", strerror(serr));
errno = serr;
Mem_close(&C->memdump);
g_free(C);
return NULL;
}
return C;
}
u64_t Cache_set_dump(T C, char *buf, int dumptype)
{
u64_t outcnt = 0;
Mem_T M;
switch (dumptype) {
case IMAP_CACHE_MEMDUMP:
M = Cache_get_memdump(C);
break;
case IMAP_CACHE_TMPDUMP:
M = Cache_get_tmpdump(C);
break;
default:
assert(0);
break;
}
assert(M);
assert(buf);
outcnt = strlen(buf);
Mem_rewind(M);
Mem_write(M, buf, outcnt);
Mem_rewind(M);
return outcnt;
}
void Cache_clear(T C)
{
C->id = 0;
C->size = 0;
Mem_close(&C->memdump);
C->memdump = Mem_open();
Mem_close(&C->tmpdump);
C->tmpdump = Mem_open();
}
u64_t Cache_update(T C, DbmailMessage *message, int filter)
{
u64_t tmpcnt = 0, outcnt = 0;
char *crlf = NULL, *buf = NULL;
TRACE(TRACE_DEBUG,"[%p] C->id[%llu] message->id[%llu]", C, C->id, message->id);
if (C->id != message->id) {
Cache_clear(C);
buf = dbmail_message_to_string(message);
crlf = get_crlf_encoded(buf);
outcnt = Cache_set_dump(C,crlf,IMAP_CACHE_MEMDUMP);
tmpcnt = Cache_set_dump(C,crlf,IMAP_CACHE_TMPDUMP);
g_free(buf);
g_free(crlf);
assert(tmpcnt==outcnt);
C->size = outcnt;
C->id = message->id;
}
switch (filter) {
/* for these two update the temp MEM buffer */
case DBMAIL_MESSAGE_FILTER_HEAD:
buf = dbmail_message_hdrs_to_string(message);
crlf = get_crlf_encoded(buf);
outcnt = Cache_set_dump(C,crlf,IMAP_CACHE_TMPDUMP);
g_free(buf);
g_free(crlf);
break;
case DBMAIL_MESSAGE_FILTER_BODY:
buf = dbmail_message_body_to_string(message);
crlf = get_crlf_encoded(buf);
outcnt = Cache_set_dump(C,crlf,IMAP_CACHE_TMPDUMP);
g_free(buf);
g_free(crlf);
break;
case DBMAIL_MESSAGE_FILTER_FULL:
outcnt = C->size;
Mem_rewind(C->memdump);
Mem_rewind(C->tmpdump);
/* done */
break;
}
TRACE(TRACE_DEBUG,"C->size[%llu], outcnt[%llu]", C->size, outcnt);
return outcnt;
}
void Cache_set_memdump(T C, Mem_T M)
{
assert(C);
assert(M);
C->memdump = M;
}
u64_t Cache_get_size(T C)
{
assert(C);
return C->size;
}
Mem_T Cache_get_memdump(T C)
{
return C->memdump;
}
void Cache_set_tmpdump(T C, Mem_T M)
{
assert(C);
assert(M);
C->tmpdump = M;
}
Mem_T Cache_get_tmpdump(T C)
{
return C->tmpdump;
}
/*
* closes the msg cache
*/
void Cache_free(T *C)
{
T c = *C;
c->id = -1;
Mem_close(&c->memdump);
Mem_close(&c->tmpdump);
g_free(c);
}
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