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CLEANUP: http: make it more obvious that msg->som is always null outside of chunks

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Since the recent buffer reorg, msg->som is redundant with buf->p but still
appears at a number of places. This tiny patch allows to confirm that som
follows two states :
  - 0 from the moment the message starts to be parsed
  - relative offset to ->p for start of chunk when parsing chunks

During this second state, ->sol is never used, so we should probably merge
the two.
This commit is contained in:
Willy Tarreau 2012-05-18 23:04:32 +02:00
parent 09d1e254c9
commit 06a000f56e
2 changed files with 8 additions and 12 deletions
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4
src/backend.c
View File

@ -260,8 +260,8 @@ struct server *get_server_ph_post(struct session *s)
const char *params = b_ptr(req, (int)(msg->sov - req->o));
const char *p = params;
if (len > buffer_len(req) - (msg->sov - msg->som))
len = buffer_len(req) - (msg->sov - msg->som);
if (len > buffer_len(req) - msg->sov)
len = buffer_len(req) - msg->sov;
if (len == 0)
return NULL;

16
src/proto_http.c
View File

@ -1303,15 +1303,13 @@ void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
* first if we need to remove some CRLF. We can only
* do this when o=0.
*/
char *beg = buf->p;
if (unlikely(ptr != beg)) {
if (unlikely(ptr != buf->p)) {
if (buf->o)
goto http_msg_ood;
/* Remove empty leading lines, as recommended by RFC2616. */
bi_fast_delete(buf, ptr - beg);
bi_fast_delete(buf, ptr - buf->p);
}
msg->sol = msg->som = ptr - buf->p;
msg->sol = msg->som = 0;
hdr_idx_init(idx);
state = HTTP_MSG_RPVER;
goto http_msg_rpver;
@ -1370,15 +1368,13 @@ void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
* first if we need to remove some CRLF. We can only
* do this when o=0.
*/
char *beg = buf->p;
if (likely(ptr != beg)) {
if (likely(ptr != buf->p)) {
if (buf->o)
goto http_msg_ood;
/* Remove empty leading lines, as recommended by RFC2616. */
bi_fast_delete(buf, ptr - beg);
bi_fast_delete(buf, ptr - buf->p);
}
msg->sol = msg->som = ptr - buf->p;
msg->sol = msg->som = 0;
/* we will need this when keep-alive will be supported
hdr_idx_init(idx);
*/