KXML_OPEN(3) Library Functions Manual KXML_OPEN(3)

kxml_open — open kcgixml context

library “libkcgixml”

#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>
#include <kcgixml.h>

enum kcgi_err
kxml_open(struct kxmlreq *xml, struct kreq *req, const char *const *elems, size_t elemsz);

Zeroes and initialises a new context req with the underlying kcgi(3) context r as allocated with khttp_parse(3) or khttp_fcgi_parse(3). It should only be called after khttp_body(3). The context is initialised with elemsz possible elements having names elems. It is the caller's responsibility that these be valid XML element names.

If kcgi_writer_disable(3) has been called, the process will be killed with an uncatchable signal.

Returns an enum kcgi_err indicating the error state.

Success (not an error).
Internal memory allocation failure.
The output connection has been terminated. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.
The connection is still expecting headers with khttp_head(3). Indicates that khttp_body(3) did not return with success or was not invoked. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.
Internal system error writing to the output stream.

The following outputs a simple XML page. It assumes r is a struct kreq pointer. For brevity, it does not do any error checking.

const char *const elems[] =
  { "foo", "bar", "baz" };
khttp_head(r, kresps[KRESP_STATUS],
  "%s", khttps[KHTTP_200]);
khttp_head(r, kresps[KRESP_CONTENT_TYPE],
  "%s", kmimetypes[KMIME_TEXT_XML]);
khttp_body(r);
kxml_open(&req, r, elems, 3);
kxml_push(&req, 0); /* foo */
kxml_puts(&req, "Hello, world");
kxml_close(&req);

kcgixml(3)

Written by Kristaps Dzonsons <kristaps@bsd.lv>.

September 15, 2024 OpenBSD 7.5