MINOR: http: Regroup return statements of http_req_get_intercept_rule at the end

Instead of having multiple return statements spreaded here and there in middle
of the function, we just exit from the loop setting the right return code. It
let a chance to do some work before leaving the function. It is also less error
prone.

src/proto_http.c

@@ -1779,6 +1779,7 @@ http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream
 	struct act_rule *rule;
 	struct hdr_ctx ctx;
 	const char *auth_realm;
+	enum rule_result rule_ret = HTTP_RULE_RES_CONT;
 	int act_flags = 0;
 	int len;
 	int early_hint = 0;
@@ -1816,18 +1817,21 @@ http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream
 resume_execution:
 		switch (rule->action) {
 		case ACT_ACTION_ALLOW:
-			return HTTP_RULE_RES_STOP;
+			rule_ret = HTTP_RULE_RES_STOP;
+			goto end;
 
 		case ACT_ACTION_DENY:
 			if (deny_status)
 				*deny_status = rule->deny_status;
-			return HTTP_RULE_RES_DENY;
+			rule_ret = HTTP_RULE_RES_DENY;
+			goto end;
 
 		case ACT_HTTP_REQ_TARPIT:
 			txn->flags |= TX_CLTARPIT;
 			if (deny_status)
 				*deny_status = rule->deny_status;
-			return HTTP_RULE_RES_DENY;
+			rule_ret = HTTP_RULE_RES_DENY;
+			goto end;
 
 		case ACT_HTTP_REQ_AUTH:
 			/* Auth might be performed on regular http-req rules as well as on stats */
@@ -1846,12 +1850,14 @@ resume_execution:
 			txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
 			http_reply_and_close(s, txn->status, &trash);
 			stream_inc_http_err_ctr(s);
-			return HTTP_RULE_RES_ABRT;
+			rule_ret = HTTP_RULE_RES_ABRT;
+			goto end;
 
 		case ACT_HTTP_REDIR:
+			rule_ret = HTTP_RULE_RES_DONE;
 			if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
-				return HTTP_RULE_RES_BADREQ;
+				rule_ret = HTTP_RULE_RES_BADREQ;
-			return HTTP_RULE_RES_DONE;
+			goto end;
 
 		case ACT_HTTP_SET_NICE:
 			s->task->nice = rule->arg.nice;
@@ -1878,8 +1884,10 @@ resume_execution:
 			if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
 			                          rule->arg.hdr_add.name_len,
 			                          &rule->arg.hdr_add.fmt,
-			                          &rule->arg.hdr_add.re, rule->action))
+			                          &rule->arg.hdr_add.re, rule->action)) {
-				return HTTP_RULE_RES_BADREQ;
+				rule_ret = HTTP_RULE_RES_BADREQ;
+				goto end;
+			}
 			break;
 
 		case ACT_HTTP_DEL_HDR:
@@ -1902,8 +1910,10 @@ resume_execution:
 			struct buffer *replace;
 
 			replace = alloc_trash_chunk();
-			if (!replace)
+			if (!replace) {
-				return HTTP_RULE_RES_BADREQ;
+				rule_ret = HTTP_RULE_RES_BADREQ;
+				goto end;
+			}
 
 			len = rule->arg.hdr_add.name_len + 2,
 			len += build_logline(s, replace->area + len,
@@ -1956,8 +1966,10 @@ resume_execution:
 
 			/* allocate key */
 			key = alloc_trash_chunk();
-			if (!key)
+			if (!key) {
-				return HTTP_RULE_RES_BADREQ;
+				rule_ret = HTTP_RULE_RES_BADREQ;
+				goto end;
+			}
 
 			/* collect key */
 			key->data = build_logline(s, key->area, key->size,
@@ -1985,8 +1997,10 @@ resume_execution:
 
 			/* allocate key */
 			key = alloc_trash_chunk();
-			if (!key)
+			if (!key) {
-				return HTTP_RULE_RES_BADREQ;
+				rule_ret = HTTP_RULE_RES_BADREQ;
+				goto end;
+			}
 
 			/* collect key */
 			key->data = build_logline(s, key->area, key->size,
@@ -2015,14 +2029,17 @@ resume_execution:
 
 			/* allocate key */
 			key = alloc_trash_chunk();
-			if (!key)
+			if (!key) {
-				return HTTP_RULE_RES_BADREQ;
+				rule_ret = HTTP_RULE_RES_BADREQ;
+				goto end;
+			}
 
 			/* allocate value */
 			value = alloc_trash_chunk();
 			if (!value) {
 				free_trash_chunk(key);
-				return HTTP_RULE_RES_BADREQ;
+				rule_ret = HTTP_RULE_RES_BADREQ;
+				goto end;
 			}
 
 			/* collect key */
@@ -2056,8 +2073,10 @@ resume_execution:
 			if (!http_apply_early_hint_rule(s, txn->rsp.chn, early_hint,
 			                                rule->arg.early_hint.name,
 			                                rule->arg.early_hint.name_len,
-			                                &rule->arg.early_hint.fmt))
+			                                &rule->arg.early_hint.fmt)) {
-				return HTTP_RULE_RES_DONE;
+				rule_ret = HTTP_RULE_RES_DONE;
+				goto end;
+			}
 			early_hint = 1;
 			break;
 		case ACT_CUSTOM:
@@ -2072,10 +2091,12 @@ resume_execution:
 			case ACT_RET_CONT:
 				break;
 			case ACT_RET_STOP:
-				return HTTP_RULE_RES_DONE;
+				rule_ret = HTTP_RULE_RES_DONE;
+				goto end;
 			case ACT_RET_YIELD:
 				s->current_rule = rule;
-				return HTTP_RULE_RES_YIELD;
+				rule_ret = HTTP_RULE_RES_YIELD;
+				goto end;
 			}
 			break;
 
@@ -2128,6 +2149,7 @@ resume_execution:
 		}
 	}
 
+  end:
 	if (early_hint) {
 		struct channel *chn = s->txn->rsp.chn;
 		char *cur_ptr = ci_head(chn);
@@ -2138,7 +2160,7 @@ resume_execution:
 	}
 
 	/* we reached the end of the rules, nothing to report */
-	return HTTP_RULE_RES_CONT;
+	return rule_ret;
 }