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authorLaurent Bercot <ska-skaware@skarnet.org>2017-07-16 15:56:05 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2017-07-16 15:56:05 +0000
commitd945bca329f7a13741e1d3afcf9f0f73f6c70ce9 (patch)
tree8a5018ae89923172361823ae24f737819ed4a9d2 /src/libs6/ftrigr_updateb.c
parentf7c2e436ed0144d09cff0e3ac90f510a47f0aeac (diff)
downloads6-d945bca329f7a13741e1d3afcf9f0f73f6c70ce9.tar.xz
Add ftrigr_updateb()
Diffstat (limited to 'src/libs6/ftrigr_updateb.c')
-rw-r--r--src/libs6/ftrigr_updateb.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/libs6/ftrigr_updateb.c b/src/libs6/ftrigr_updateb.c
new file mode 100644
index 0000000..edf6f2c
--- /dev/null
+++ b/src/libs6/ftrigr_updateb.c
@@ -0,0 +1,65 @@
+/* ISC license. */
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <errno.h>
+#include <skalibs/gccattributes.h>
+#include <skalibs/error.h>
+#include <skalibs/uint16.h>
+#include <skalibs/genalloc.h>
+#include <skalibs/gensetdyn.h>
+#include <skalibs/unixmessage.h>
+#include <skalibs/skaclient.h>
+#include <s6/ftrigr.h>
+
+static inline int appears (uint16_t, uint16_t const *, size_t) gccattr_pure ;
+
+static inline int appears (uint16_t id, uint16_t const *list, size_t len)
+{
+ while (len) if (id == list[--len]) return 1 ;
+ return 0 ;
+}
+
+static int msghandler (unixmessage_t const *m, void *context)
+{
+ ftrigr_t *a = (ftrigr_t *)context ;
+ ftrigr1_t *p ;
+ int addit = 1 ;
+ uint16_t id ;
+ if (m->len != 4 || m->nfds) return (errno = EPROTO, 0) ;
+ uint16_unpack_big(m->s, &id) ;
+ p = GENSETDYN_P(ftrigr1_t, &a->data, id) ;
+ if (!p) return 1 ;
+ if (p->state != FR1STATE_LISTENING) return (errno = EINVAL, 0) ;
+ if (!genalloc_readyplus(uint16_t, &a->list, 1)) return 0 ;
+ switch (m->s[2])
+ {
+ case 'd' :
+ if (!stralloc_catb(&p->what, m->s + 3, 1)) return 0 ;
+ p->state = FR1STATE_WAITACK ;
+ break ;
+ case '!' :
+ if (!stralloc_catb(&p->what, m->s + 3, 1)) return 0 ;
+ if (p->options & FTRIGR_REPEAT)
+ {
+ if (p->what.len > 1
+ && appears(id+1, genalloc_s(uint16_t, &a->list), genalloc_len(uint16_t, &a->list)))
+ addit = 0 ;
+ }
+ else p->state = FR1STATE_WAITACKDATA ;
+ break ;
+ default : return (errno = EPROTO, 0) ;
+ }
+ if (addit)
+ {
+ id++ ; genalloc_append(uint16_t, &a->list, &id) ;
+ }
+ return 1 ;
+}
+
+int ftrigr_updateb (ftrigr_t *a)
+{
+ size_t curlen = genalloc_len(uint16_t, &a->list) ;
+ int r = skaclient_update(&a->connection, &msghandler, a) ;
+ return r < 0 ? r : (int)(genalloc_len(uint16_t, &a->list) - curlen) ;
+}