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/* ISC license. */
#include <sys/uio.h>
#include <string.h>
#include <stdint.h>
#include <skalibs/uint32.h>
#include <skalibs/uint64.h>
#include <skalibs/tai.h>
#include <skalibs/strerr.h>
#include <skalibs/genalloc.h>
#include <skalibs/gensetdyn.h>
#include <skalibs/avltree.h>
#include <skalibs/unixmessage.h>
#include <skabus/rpc.h>
#include "skabus-rpcd.h"
static void *query_serial_dtok (uint32_t d, void *x)
{
(void)x ;
return &QUERY(d)->serial ;
}
static void *query_deadline_dtok (uint32_t d, void *x)
{
(void)x ;
return &QUERY(d)->deadline ;
}
static int query_serial_cmp (void const *a, void const *b, void *x)
{
uint64_t aa = *(uint64_t *)a ;
uint64_t bb = *(uint64_t *)b ;
(void)x ;
return aa < bb ? -1 : aa > bb ;
}
static int query_deadline_cmp (void const *a, void const *b, void *x)
{
tain const *aa = (tain const *)a ;
tain const *bb = (tain const *)b ;
(void)x ;
return tain_less(aa, bb) ? -1 : tain_less(bb, aa) ;
}
gensetdyn queries = GENSETDYN_ZERO ;
static avltree qserialdict = AVLTREE_INIT(10, 1, 2, &query_serial_dtok, &query_serial_cmp, 0) ;
static avltree qdeadlinedict = AVLTREE_INIT(10, 1, 2, &query_deadline_dtok, &query_deadline_cmp, 0) ;
static inline void query_delete (uint32_t i)
{
if (!avltree_delete(&qdeadlinedict, &QUERY(i)->deadline))
strerr_diefu1sys(111, "avltree_delete qdeadlinedict in query_delete") ;
if (!avltree_delete(&qserialdict, &QUERY(i)->serial))
strerr_diefu1sys(111, "avltree_delete qserialdict in query_delete") ;
if (!gensetdyn_delete(&queries, i))
strerr_diefu1sys(111, "gensetdyn_delete in query_delete") ;
}
void query_remove (uint32_t i)
{
query_t *q = QUERY(i) ;
client_t *c = CLIENT(q->client) ;
interface_t *y = INTERFACE(q->interface) ;
if (!gensetdyn_delete(&c->queries, q->clientindex))
strerr_diefu1sys(111, "gensetdyn_delete c->queries in query_remove") ;
if (!gensetdyn_delete(&y->queries, q->interfaceindex))
strerr_diefu1sys(111, "gensetdyn_delete y->queries in query_remove") ;
query_delete(i) ;
}
void query_fail (uint32_t i, unsigned char status)
{
query_t *q = QUERY(i) ;
client_t *c = CLIENT(q->client) ;
char pack[10] = "Rssssssssr" ;
unixmessage m = { .s = pack, .len = 10, .fds = 0, .nfds = 0 } ;
uint64_pack_big(pack+1, q->serial) ;
pack[9] = status ;
if (!unixmessage_put(&c->async.out, &m))
strerr_diefu1sys(111, "unixmessage_put in query_fail") ;
query_remove(i) ;
client_setdeadline(c) ;
}
int query_cancel (uint32_t i, unsigned char reason)
{
query_t *q = QUERY(i) ;
interface_t *y = INTERFACE(q->interface) ;
client_t *c = CLIENT(y->client) ;
char pack[14] = "Ciiiissssssssr" ;
unixmessage m = { .s = pack, .len = 14, .fds = 0, .nfds = 0 } ;
uint32_pack_big(pack+1, y->id) ;
uint64_pack_big(pack+5, q->serial) ;
pack[13] = reason ;
if (!unixmessage_put(&c->async.out, &m)) return 0 ;
client_setdeadline(c) ;
return 1 ;
}
int query_cancelremove (uint32_t i, unsigned char reason)
{
if (!query_cancel(i, reason)) return 0 ;
query_remove(i) ;
return 1 ;
}
int query_lookup_by_serial (uint64_t serial, uint32_t *d)
{
return avltree_search(&qserialdict, &serial, d) ;
}
int query_lookup_by_mindeadline (uint32_t *d)
{
return avltree_min(&qdeadlinedict, d) ;
}
void query_get_mindeadline (tain *deadline)
{
uint32_t d ;
if (query_lookup_by_mindeadline(&d)) *deadline = QUERY(d)->deadline ;
else tain_add_g(deadline, &tain_infinite_relative) ;
}
int query_add (uint32_t *d, tain const *deadline, uint32_t client, uint32_t interface)
{
static uint64_t serial = 1 ;
uint32_t qq, cc, yy ;
query_t *q ;
if (!gensetdyn_new(&queries, &qq)) return 0 ;
if (!gensetdyn_new(&CLIENT(client)->queries, &cc)) goto end0 ;
if (!gensetdyn_new(&INTERFACE(interface)->queries, &yy)) goto end1 ;
q = QUERY(qq) ;
q->serial = serial ;
q->deadline = *deadline ;
q->client = client ;
q->clientindex = cc ;
q->interface = interface ;
q->interfaceindex = yy ;
if (!avltree_insert(&qserialdict, qq)) goto end2 ;
for (;;)
{
static tain const nano1 = { .sec = TAI_ZERO, .nano = 1 } ;
uint32_t d ;
if (!avltree_search(&qdeadlinedict, &q->deadline, &d)) break ;
tain_add(&q->deadline, &q->deadline, &nano1) ;
}
if (!avltree_insert(&qdeadlinedict, qq)) goto end3 ;
serial++ ;
*d = qq ;
return 1 ;
end3:
if (!avltree_delete(&qserialdict, &serial))
strerr_diefu1sys(111, "avltree_delete in query_add") ;
end2:
if (!gensetdyn_delete(&INTERFACE(interface)->queries, yy))
strerr_diefu1sys(111, "gensetdyn_delete INTERFACE(interface)->queries in query_add") ;
end1:
if (!gensetdyn_delete(&CLIENT(client)->queries, cc))
strerr_diefu1sys(111, "gensetdyn_delete CLIENT(client)->queries in query_add") ;
end0:
if (!gensetdyn_delete(&queries, qq))
strerr_diefu1sys(111, "gensetdyn_delete queries in query_add") ;
return 0 ;
}
int query_send (uint32_t qq, unixmessage const *m)
{
skabus_rpc_rinfo_t rinfo ;
char pack[4 + SKABUS_RPC_RINFO_PACK] = "Q" ;
struct iovec v[2] = { { .iov_base = pack, .iov_len = 4 + SKABUS_RPC_RINFO_PACK }, { .iov_base = m->s, .iov_len = m->len } } ;
unixmessagev mtosend = { .v = v, .vlen = 2, .fds = m->fds, .nfds = m->nfds } ;
query_t *q = QUERY(qq) ;
interface_t *y = INTERFACE(q->interface) ;
client_t *c = CLIENT(q->client) ;
char const *idstr = client_idstr(c) ;
size_t idstrlen = strlen(idstr) ;
rinfo.serial = q->serial ;
rinfo.limit = q->deadline ;
tain_copynow(&rinfo.timestamp) ;
rinfo.uid = c->uid ;
rinfo.gid = c->gid ;
memcpy(rinfo.idstr, idstr, idstrlen) ;
memset(rinfo.idstr + idstrlen, 0, SKABUS_RPC_IDSTR_SIZE + 1 - idstrlen) ;
uint32_pack_big(pack+1, y->id) ;
skabus_rpc_rinfo_pack(pack + 5, &rinfo) ;
c = CLIENT(y->client) ;
if (!unixmessage_putv_and_close(&c->async.out, &mtosend, unixmessage_bits_closeall)) return 0 ;
client_setdeadline(c) ;
return 1 ;
}
void query_reply (uint32_t qq, char result, unixmessage const *m)
{
char pack[11] = "R" ;
struct iovec v[2] = { { .iov_base = pack, .iov_len = 11 }, { .iov_base = m->s, .iov_len = m->len } } ;
unixmessagev mtosend = { .v = v, .vlen = 2, .fds = m->fds, .nfds = m->nfds } ;
query_t *q = QUERY(qq) ;
client_t *c = CLIENT(q->client) ;
uint64_pack_big(pack+1, q->serial) ;
pack[9] = 0 ;
pack[10] = result ;
if (!unixmessage_putv_and_close(&c->async.out, &mtosend, unixmessage_bits_closeall))
strerr_diefu1sys(111, "unixmessage_put in query_reply") ;
client_setdeadline(c) ;
query_remove(qq) ;
}
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