/**
* Sends a brigade with an error bucket down the filter chain.
*/
apr_status_t send_error_bucket(modsec_rec *msr, ap_filter_t *f, int status) {
apr_bucket_brigade *brigade = NULL;
apr_bucket *bucket = NULL;
/* Set the status line explicitly for the error document */
f->r->status_line = ap_get_status_line(status);
brigade = apr_brigade_create(f->r->pool, f->r->connection->bucket_alloc);
if (brigade == NULL) return APR_EGENERAL;
bucket = ap_bucket_error_create(status, NULL, f->r->pool, f->r->connection->bucket_alloc);
if (bucket == NULL) return APR_EGENERAL;
APR_BRIGADE_INSERT_TAIL(brigade, bucket);
bucket = apr_bucket_eos_create(f->r->connection->bucket_alloc);
if (bucket == NULL) return APR_EGENERAL;
APR_BRIGADE_INSERT_TAIL(brigade, bucket);
ap_pass_brigade(f->next, brigade);
/* NOTE:
* It may not matter what we do from the filter as it may be too
* late to even generate an error (already sent to client). Nick Kew
* recommends to return APR_EGENERAL in hopes that the handler in control
* will notice and do The Right Thing. So, that is what we do now.
*/
return APR_EGENERAL;
}
static void
flush_headers(slash_context_t* ctx)
{
sl_response_key_value_t* headers;
size_t header_count, i;
if(!ctx->headers_sent) {
ctx->r->status = sl_response_get_status(ctx->vm);
ctx->r->status_line = ap_get_status_line(ctx->r->status);
headers = sl_response_get_headers(ctx->vm, &header_count);
for(i = 0; i < header_count; i++) {
apr_table_add(ctx->r->headers_out, headers[i].name, headers[i].value);
}
ctx->headers_sent = 1;
}
}
DAV_DECLARE(dav_get_props_result) dav_get_props(dav_propdb *propdb,
apr_xml_elem *prop_elem)
{
const dav_hooks_db *db_hooks = propdb->db_hooks;
apr_xml_elem *elem = prop_elem;
apr_text_header hdr_good = { 0 };
apr_text_header hdr_bad = { 0 };
apr_text_header hdr_403 = { 0 };
apr_text_header hdr_ns = { 0 };
int have_good = 0;
dav_get_props_result result = { 0 };
char *marks_liveprop;
dav_xmlns_info *xi;
int xi_filled = 0;
/* ### NOTE: we should pass in TWO buffers -- one for keys, one for
the marks */
/* we will ALWAYS provide a "good" result, even if it is EMPTY */
apr_text_append(propdb->p, &hdr_good,
"<D:propstat>" DEBUG_CR
"<D:prop>" DEBUG_CR);
/* ### the marks should be in a buffer! */
/* allocate zeroed-memory for the marks. These marks indicate which
liveprop namespaces we've generated into the output xmlns buffer */
/* same for the liveprops */
marks_liveprop = apr_pcalloc(propdb->p, dav_get_liveprop_ns_count() + 1);
xi = dav_xmlns_create(propdb->p);
for (elem = elem->first_child; elem; elem = elem->next) {
dav_elem_private *priv;
dav_error *err;
dav_prop_insert inserted;
dav_prop_name name;
if (elem->ns == APR_XML_NS_NONE)
name.ns = "";
else
name.ns = APR_XML_GET_URI_ITEM(propdb->ns_xlate, elem->ns);
name.name = elem->name;
/*
** First try live property providers; if they don't handle
** the property, then try looking it up in the propdb.
*/
if (elem->priv == NULL) {
elem->priv = apr_pcalloc(propdb->p, sizeof(*priv));
}
priv = elem->priv;
/* cache the propid; dav_get_props() could be called many times */
if (priv->propid == 0)
dav_find_liveprop(propdb, elem);
if (priv->propid != DAV_PROPID_CORE_UNKNOWN) {
/* insert the property. returns 1 if an insertion was done. */
if ((err = dav_insert_liveprop(propdb, elem, DAV_PROP_INSERT_VALUE,
&hdr_good, &inserted)) != NULL) {
/* ### need to propagate the error to the caller... */
/* ### skip it for now, as if nothing was inserted */
}
if (inserted == DAV_PROP_INSERT_VALUE) {
have_good = 1;
/*
** Add the liveprop's namespace URIs. Note that provider==NULL
** for core properties.
*/
if (priv->provider != NULL) {
const char * const * scan_ns_uri;
for (scan_ns_uri = priv->provider->namespace_uris;
*scan_ns_uri != NULL;
++scan_ns_uri) {
long ns;
ns = dav_get_liveprop_ns_index(*scan_ns_uri);
if (marks_liveprop[ns])
continue;
marks_liveprop[ns] = 1;
dav_insert_xmlns(propdb->p, "lp", ns, *scan_ns_uri,
&hdr_ns);
}
}
/* property added. move on to the next property. */
continue;
}
else if (inserted == DAV_PROP_INSERT_NOTDEF) {
/* nothing to do. fall thru to allow property to be handled
as a dead property */
}
else if (inserted == DAV_PROP_INSERT_FORBIDDEN) {
if (hdr_403.first == NULL)
apr_text_append(propdb->p, &hdr_403,
"<D:propstat>" DEBUG_CR
"<D:prop>" DEBUG_CR);
/* output this property's name (into the forbidden propstats) */
dav_output_prop_name(propdb->p, &name, xi, &hdr_403);
continue;
}
#if DAV_DEBUG
else {
#if 0
/* ### need to change signature to return an error */
return dav_new_error(propdb->p, HTTP_INTERNAL_SERVER_ERROR, 0,
"INTERNAL DESIGN ERROR: insert_liveprop "
"did not insert what was asked for.");
#endif
}
#endif
}
/* The property wasn't a live property, so look in the dead property
database. */
/* make sure propdb is really open */
if (propdb->deferred) {
/* ### what to do with db open error? */
(void) dav_really_open_db(propdb, 1 /*ro*/);
}
/* only bother to look if a database exists */
if (propdb->db != NULL) {
int found;
if ((err = (*db_hooks->output_value)(propdb->db, &name,
xi, &hdr_good,
&found)) != NULL) {
/* ### what to do? continue doesn't seem right... */
continue;
}
if (found) {
have_good = 1;
/* if we haven't added the db's namespaces, then do so... */
if (!xi_filled) {
(void) (*db_hooks->define_namespaces)(propdb->db, xi);
xi_filled = 1;
}
continue;
}
}
/* not found as a live OR dead property. add a record to the "bad"
propstats */
/* make sure we've started our "bad" propstat */
if (hdr_bad.first == NULL) {
apr_text_append(propdb->p, &hdr_bad,
"<D:propstat>" DEBUG_CR
"<D:prop>" DEBUG_CR);
}
/* output this property's name (into the bad propstats) */
dav_output_prop_name(propdb->p, &name, xi, &hdr_bad);
}
apr_text_append(propdb->p, &hdr_good,
"</D:prop>" DEBUG_CR
"<D:status>HTTP/1.1 200 OK</D:status>" DEBUG_CR
"</D:propstat>" DEBUG_CR);
/* default to start with the good */
result.propstats = hdr_good.first;
/* we may not have any "bad" results */
if (hdr_bad.first != NULL) {
/* "close" the bad propstat */
apr_text_append(propdb->p, &hdr_bad,
"</D:prop>" DEBUG_CR
"<D:status>HTTP/1.1 404 Not Found</D:status>" DEBUG_CR
"</D:propstat>" DEBUG_CR);
/* if there are no good props, then just return the bad */
if (!have_good) {
result.propstats = hdr_bad.first;
}
else {
/* hook the bad propstat to the end of the good one */
hdr_good.last->next = hdr_bad.first;
}
}
if (hdr_403.first != NULL) {
/* "close" the bad propstat */
char *perm_denied_txt =
apr_psprintf(propdb->p, "</D:prop>" DEBUG_CR "<D:status>HTTP/1.1 %s </D:status>"
"</D:propstat>" DEBUG_CR,
ap_get_status_line(dav_get_permission_denied_status(propdb->r)));
apr_text_append(propdb->p, &hdr_403, perm_denied_txt);
if (hdr_bad.first != NULL)
hdr_bad.last->next = hdr_403.first;
else if (have_good)
hdr_good.last->next = hdr_403.first;
else result.propstats = hdr_403.first;
}
/* add in all the various namespaces, and return them */
dav_xmlns_generate(xi, &hdr_ns);
result.xmlns = hdr_ns.first;
return result;
}
apr_status_t ma_advertise_server(server_rec *server, int type)
{
char buf[MA_BSIZE];
char dat[APR_RFC822_DATE_LEN];
char add[40];
unsigned char msig[APR_MD5_DIGESTSIZE];
unsigned char ssig[APR_MD5_DIGESTSIZE * 2 + 1];
const char *asl;
char *p = buf;
int i, c = 0;
apr_size_t l = MA_BSIZE - 8;
apr_size_t n = 0;
apr_md5_ctx_t md;
mod_advertise_config *mconf = ap_get_module_config(server->module_config, &advertise_module);
ma_sequence++;
if (ma_sequence < 1)
ma_sequence = 1;
sprintf(buf, "%" APR_INT64_T_FMT, ma_sequence);
ap_recent_rfc822_date(dat, apr_time_now());
asl = ap_get_status_line(ma_advertise_stat);
/* Create MD5 digest
* salt + date + sequence + srvid
*/
apr_md5_init(&md);
apr_md5_update(&md, magd->ssalt, APR_MD5_DIGESTSIZE);
apr_md5_update(&md, dat, strlen(dat));
apr_md5_update(&md, buf, strlen(buf));
apr_md5_update(&md, magd->srvid + 1, strlen(magd->srvid) - 1);
apr_md5_final(msig, &md);
/* Convert MD5 digest to hex string */
for (i = 0; i < APR_MD5_DIGESTSIZE; i++) {
ssig[c++] = hex[msig[i] >> 4];
ssig[c++] = hex[msig[i] & 0x0F];
}
ssig[c] = '\0';
n = apr_snprintf(p, l, MA_ADVERTISE_SERVER_FMT,
asl, dat, ma_sequence, ssig, magd->srvid + 1);
if (type == MA_ADVERTISE_SERVER) {
char *ma_advertise_srvs = mconf->ma_advertise_srvs;
if (strchr(ma_advertise_srvs, ':') != NULL) {
apr_snprintf(add, 40, "[%s]", mconf->ma_advertise_srvs);
ma_advertise_srvs = add;
}
l -= n;
n += apr_snprintf(p + n, l,
"X-Manager-Address: %s:%u" CRLF
"X-Manager-Url: %s" CRLF
"X-Manager-Protocol: %s" CRLF
"X-Manager-Host: %s" CRLF,
ma_advertise_srvs,
mconf->ma_advertise_srvp,
mconf->ma_advertise_srvh,
mconf->ma_advertise_srvm,
server->server_hostname);
}
strcat(p, CRLF);
n += 2;
return apr_socket_sendto(ma_mgroup_socket,
ma_mgroup_sa, 0, buf, &n);
}
