Add textclient, fix some textmessage issues

1 files changed, 34 insertions, 0 deletions

diff --git a/src/libunixonacid/textclient_startf.c b/src/libunixonacid/textclient_startf.c
new file mode 100644
index 0000000..fd724cd
--- /dev/null
+++ b/src/libunixonacid/textclient_startf.c
@@ -0,0 +1,34 @@
+/* ISC license. */
+
+#include <sys/uio.h>
+#include <string.h>
+#include <errno.h>
+#include <skalibs/error.h>
+#include <skalibs/allreadwrite.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/textmessage.h>
+#include <skalibs/textclient.h>
+
+int textclient_startf (textclient_t *a, char const *const *argv, char const *const *envp, uint32_t options, char const *before, size_t beforelen, char const *after, size_t afterlen, tain_t const *deadline, tain_t *stamp)
+{
+  struct iovec v ;
+  int fd[3] ;
+  pid_t pid = child_spawn(argv[0], argv, envp, fd, 3) ;
+  if (!pid) return 0 ;
+  textmessage_receiver_init(&a->syncin, fd[0], a->syncbuf, TEXTCLIENT_BUFSIZE, TEXTMESSAGE_MAXLEN) ;
+  textmessage_receiver_init(&a->asyncin, fd[2], a->asyncbuf, TEXTCLIENT_BUFSIZE, TEXTMESSAGE_MAXLEN) ;
+  textmessage_sender_init(&a->syncout, fd[1]) ;
+  a->pid = pid ;
+  a->options = options ;
+  if (!textclient_exchange(a, before, beforelen, &v, deadline, stamp)) goto err ;
+  if (v.iov_len != afterlen || memcmp(v.iov_base, after, afterlen)) goto errproto ;
+  if (sanitize_read(textmessage_timed_receive(&a->asyncin, &v, deadline, stamp)) <= 0) goto err ;
+  if (v.iov_len != afterlen || memcmp(v.iov_base, after, afterlen)) goto errproto ;
+  return 1 ;
+
+ errproto:
+  errno = EPROTO ;
+ err:
+  textclient_end(a) ;
+  return 0 ;
+}