NAME
cgi_register_parse_cb - Register a parse callback
SYNOPSIS
#include <cgi/cgi.h>
NEOERR *cgi_register_parse_cb(CGI *cgi, const char *method, const char *ctype,
void *rock, CGI_PARSE_CB parse_cb);
ARGUMENTS
cgi - a CGI struct
method - the HTTP method you want to handle, or * for all
ctype - the HTTP Content-Type you want to handle, or * for all
rock - opaque data that we’ll pass to your call back
DESCRIPTION
The ClearSilver CGI Kit has built-in functionality to handle the
following methods: GET -> doesn’t have any data except query string,
which is processed for all methods POST w/ application/x-www-form-
urlencoded POST w/ multipart/form-data processed as RFC2388 data into
files and HDF (see cgi_filehandle()) PUT (any type) The entire data
chunk is stored as a file, with meta data in HDF (similar to single
files in RFC2388). The data is accessible via cgi_filehandle with NULL
for name. To handle other methods/content types, you have to register
your own parse function. This isn’t necessary if you aren’t expecting
any data, and technically HTTP only allows data on PUT/POST requests
(and presumably user defined methods). In particular, if you want to
implement XML-RPC or SOAP, you’ll have to register a callback here to
grab the XML data chunk. Usually you’ll want to register POST w/
application/xml or POST w/ text/xml (you either need to register both
or register POST w/ * and check the ctype yourself, remember to
nerr_raise(CGIParseNotHandled) if you aren’t handling the POST). In
general, your callback should: Find out how much data is available: l =
hdf_get_value (cgi->hdf, "CGI.ContentLength", NULL); len = atoi(l); And
read/handle all of the data using cgiwrap_read. See the builtin
handlers for how this is done. Note that cgiwrap_read is not
guarunteed to return all of the data you request (just like fread(3))
since it might be reading of a socket. Sorry. You should be careful
when reading the data to watch for short reads (ie, end of file) and
cases where the client sends you data ad infinitum.
RETURN VALUE
None
SEE ALSO
cgi_debug_init(3), cgi_parse(3), cgi_destroy(3), cgi_js_escape(3),
cgi_html_escape_strfunc(3), cgi_register_strfuncs(3), cgi_output(3),
parse_rfc2388(3), cgi_url_validate(3), open_upload(3), cgi_cs_init(3),
cgi_url_escape_more(3), cgi_html_strip_strfunc(3), cgi_neo_error(3),
cgi_redirect(3), cgi_filehandle(3), cgi_register_parse_cb(3),
cgi_url_escape(3), cgi_init(3), cgi_redirect_uri(3),
cgi_cookie_clear(3), cgi_url_unescape(3), cgi_vredirect(3),
cgi_display(3), cgi_html_ws_strip(3), cgi_error(3), cgi_cookie_set(3),
cgi_text_html_strfunc(3), cgi_cookie_authority