/* allocates and initializes an error response */
HttpReply *
errorBuildReply(ErrorState * err)
{
HttpReply *rep = httpReplyCreate();
const char *name = errorPageName(err->page_id);
http_version_t version;
/* no LMT for error pages; error pages expire immediately */
httpBuildVersion(&version, 1, 0);
if (strchr(name, ':')) {
/* Redirection */
char *quoted_url = rfc1738_escape_part(errorConvert('u', err));
httpReplySetHeaders(rep, version, HTTP_MOVED_TEMPORARILY, NULL, "text/html", 0, 0, squid_curtime);
httpHeaderPutStrf(&rep->header, HDR_LOCATION, name, quoted_url);
httpHeaderPutStrf(&rep->header, HDR_X_SQUID_ERROR, "%d %s\n", err->http_status, "Access Denied");
} else {
MemBuf content = errorBuildContent(err);
httpReplySetHeaders(rep, version, err->http_status, NULL, "text/html", content.size, 0, squid_curtime);
/*
* include some information for downstream caches. Implicit
* replaceable content. This isn't quite sufficient. xerrno is not
* necessarily meaningful to another system, so we really should
* expand it. Additionally, we should identify ourselves. Someone
* might want to know. Someone _will_ want to know OTOH, the first
* X-CACHE-MISS entry should tell us who.
*/
httpHeaderPutStrf(&rep->header, HDR_X_SQUID_ERROR, "%s %d",
name, err->xerrno);
httpBodySet(&rep->body, &content);
/* do not memBufClean() the content, it was absorbed by httpBody */
}
return rep;
}
static MemBuf
errorBuildContent(ErrorState * err)
{
MemBuf content;
const char *m;
const char *p;
const char *t;
assert(err != NULL);
assert(err->page_id > ERR_NONE && err->page_id < error_page_count);
memBufDefInit(&content);
m = error_text[err->page_id];
assert(m);
while ((p = strchr(m, '%'))) {
memBufAppend(&content, m, p - m); /* copy */
t = errorConvert(*++p, err); /* convert */
memBufPrintf(&content, "%s", t); /* copy */
m = p + 1; /* advance */
}
if (*m)
memBufPrintf(&content, "%s", m); /* copy tail */
assert(content.size == strlen(content.buf));
return content;
}
