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MINOR: http-htx: Use http reply from the http-errors section

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When an http reply is configured to use an error message from an http-errors
section, instead of referencing the error message, the http reply is used. To do
so the new http reply type HTTP_REPLY_INDIRECT has been added.
This commit is contained in:
Christopher Faulet 2020-05-14 14:49:25 +02:00
parent 40e8569676
commit e29a97e51a
3 changed files with 19 additions and 6 deletions
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4
include/types/http_htx.h
View File

@ -47,10 +47,11 @@ struct http_reply_hdr {
};
#define HTTP_REPLY_EMPTY 0x00 /* the reply has no payload */
#define HTTP_REPLY_ERRMSG 0x01 /* the reply is an error message */
#define HTTP_REPLY_ERRMSG 0x01 /* the reply is an error message (may be NULL) */
#define HTTP_REPLY_ERRFILES 0x02 /* the reply references an http-errors section */
#define HTTP_REPLY_RAW 0x03 /* the reply use a raw payload */
#define HTTP_REPLY_LOGFMT 0x04 /* the reply use a log-format payload */
#define HTTP_REPLY_INDIRECT 0x05 /* the reply references another http-reply (may be NULL) */
/* Uses by HAProxy to generate internal responses */
struct http_reply {
@ -63,6 +64,7 @@ struct http_reply {
struct buffer obj; /* A raw string (type = HTTP_REPLY_RAW) */
struct buffer *errmsg; /* The error message to use as response (type = HTTP_REPLY_ERRMSG).
* may be NULL, if so rely on the proxy error messages */
struct http_reply *reply; /* The HTTP reply to use as response (type = HTTP_REPLY_INDIRECT) */
char *http_errors; /* The http-errors section to use (type = HTTP_REPLY_ERRFILES).
* Should be resolved during post-check */
} body;

13
src/http_ana.c
View File

@ -4708,7 +4708,18 @@ int http_reply_message(struct stream *s, struct http_reply *reply)
s->txn->status = reply->status;
channel_htx_truncate(res, htx);
/* HTTP_REPLY_ERRFILES unexpected here. handled as no payload if so */
/*
* - HTTP_REPLY_ERRFILES unexpected here. handled as no payload if so
*
* - HTTP_REPLY_INDIRECT: switch on another reply if defined or handled
* as no payload if NULL. the TXN status code is set with the status
* of the original reply.
*/
if (reply->type == HTTP_REPLY_INDIRECT) {
if (reply->body.reply)
reply = reply->body.reply;
}
if (reply->type == HTTP_REPLY_ERRMSG) {
/* implicit or explicit error message*/

6
src/http_htx.c
View File

@ -1278,10 +1278,10 @@ int http_check_http_reply(struct http_reply *reply, struct proxy *px, char **err
list_for_each_entry(http_errs, &http_errors_list, list) {
if (strcmp(http_errs->id, reply->body.http_errors) == 0) {
reply->type = HTTP_REPLY_ERRMSG;
reply->type = HTTP_REPLY_INDIRECT;
free(reply->body.http_errors);
reply->body.errmsg = http_errs->errmsg[http_get_status_idx(reply->status)];
if (!reply->body.errmsg)
reply->body.reply = http_errs->replies[http_get_status_idx(reply->status)];
if (!reply->body.reply)
ha_warning("Proxy '%s': status '%d' referenced by an http reply "
"not declared in http-errors section '%s'.\n",
px->id, reply->status, http_errs->id);