ftrigr_unsubscribe.c (833B)
1 /* ISC license. */ 2 3 #include <errno.h> 4 #include <skalibs/uint16.h> 5 #include <skalibs/stralloc.h> 6 #include <skalibs/gensetdyn.h> 7 #include <skalibs/textclient.h> 8 #include <s6/ftrigr.h> 9 10 int ftrigr_unsubscribe (ftrigr_t *a, uint16_t i, tain const *deadline, tain *stamp) 11 { 12 ftrigr1_t *p ; 13 char pack[3] = "--U" ; 14 if (!i--) return (errno = EINVAL, 0) ; 15 p = GENSETDYN_P(ftrigr1_t, &a->data, i) ; 16 if (!p) return (errno = EINVAL, 0) ; 17 switch (p->state) 18 { 19 case FR1STATE_WAITACK : 20 case FR1STATE_WAITACKDATA : 21 { 22 char dummy ; 23 ftrigr_check(a, i+1, &dummy) ; 24 return 1 ; 25 } 26 default : break ; 27 } 28 uint16_pack_big(pack, i) ; 29 if (!textclient_command(&a->connection, pack, 3, deadline, stamp)) return 0 ; 30 stralloc_free(&p->what) ; 31 *p = ftrigr1_zero ; 32 return gensetdyn_delete(&a->data, i) ; 33 }