diff options
Diffstat (limited to 'src/libskabus/skabus_pub_update.c')
-rw-r--r-- | src/libskabus/skabus_pub_update.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/libskabus/skabus_pub_update.c b/src/libskabus/skabus_pub_update.c new file mode 100644 index 0000000..46e699c --- /dev/null +++ b/src/libskabus/skabus_pub_update.c @@ -0,0 +1,58 @@ +/* ISC license. */ + +#include <string.h> +#include <stdint.h> +#include <errno.h> + +#include <skalibs/posixishard.h> +#include <skalibs/uint64.h> +#include <skalibs/tai.h> +#include <skalibs/alloc.h> +#include <skalibs/genalloc.h> +#include <skalibs/unixmessage.h> +#include <skalibs/skaclient.h> + +#include <skabus/pub.h> + +static int handler (unixmessage_t const *m, void *x) +{ + skabus_pub_t *a = (skabus_pub_t *)x ; + size_t n = genalloc_len(skabus_pub_cltinfo_t, &a->info) ; + char const *s = m->s ; + size_t len = m->len ; + skabus_pub_cltinfo_t *p ; + uint8_t idlen ; + if (len < 11 + TAIN_PACK || !m->nfds) goto errproto ; + if (!genalloc_readyplus(skabus_pub_cltinfo_t, &a->info, 1)) goto err ; + p = genalloc_s(skabus_pub_cltinfo_t, &a->info) + n ; + p->fd = m->fds[0] ; + p->nfds = m->nfds - 1 ; + if (p->nfds > 1) + { + p->fds = alloc(p->nfds * sizeof(int)) ; + if (!p->fds) goto err ; + for (size_t i = 0 ; i < p->nfds ; i++) p->fds[i] = m->fds[1 + i] ; + } + else p->fds = 0 ; + uint64_unpack_big(s, &p->msginfo.serial) ; s += 8 ; len -= 8 ; + tain_unpack(s, &p->msginfo.timestamp) ; s += TAIN_PACK ; len -= TAIN_PACK ; + p->msginfo.flags = *s++ ; len-- ; + idlen = *s++ ; len-- ; + if (len != (size_t)idlen + 1 || s[idlen] || idlen > SKABUS_PUB_IDSTR_SIZE) goto errprotof ; + memcpy(p->msginfo.sender, s, len) ; + genalloc_setlen(skabus_pub_cltinfo_t, &a->info, n+1) ; + return 1 ; + + errprotof: + alloc_free(p->fds) ; + errproto: + errno = EPROTO ; + err: + unixmessage_drop(m) ; + return 0 ; +} + +int skabus_pub_update (skabus_pub_t *a) +{ + return skaclient_update(&a->connection, &handler, a) ; +} |