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Diffstat (limited to 'include/haproxy/action-t.h')
| -rw-r--r-- | include/haproxy/action-t.h | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/include/haproxy/action-t.h b/include/haproxy/action-t.h new file mode 100644 index 0000000..f77bdce --- /dev/null +++ b/include/haproxy/action-t.h @@ -0,0 +1,217 @@ +/* + * include/haproxy/action-t.h + * This file contains actions definitions. + * + * Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation, version 2.1 + * exclusively. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _HAPROXY_ACTION_T_H +#define _HAPROXY_ACTION_T_H + +#include <haproxy/applet-t.h> +#include <haproxy/stick_table-t.h> +#include <haproxy/vars-t.h> + +struct session; +struct stream; +struct proxy; + +enum act_from { + ACT_F_TCP_REQ_CON, /* tcp-request connection */ + ACT_F_TCP_REQ_SES, /* tcp-request session */ + ACT_F_TCP_REQ_CNT, /* tcp-request content */ + ACT_F_TCP_RES_CNT, /* tcp-response content */ + ACT_F_HTTP_REQ, /* http-request */ + ACT_F_HTTP_RES, /* http-response */ + ACT_F_TCP_CHK, /* tcp-check. */ + ACT_F_CFG_PARSER, /* config parser */ + ACT_F_CLI_PARSER, /* command line parser */ +}; + +enum act_return { + ACT_RET_CONT, /* continue processing. */ + ACT_RET_STOP, /* stop processing. */ + ACT_RET_YIELD, /* call me again. */ + ACT_RET_ERR, /* internal processing error. */ + ACT_RET_DONE, /* processing done, stop processing */ + ACT_RET_DENY, /* deny, must be handled by the caller */ + ACT_RET_ABRT, /* abort, handled by action itsleft. */ + ACT_RET_INV, /* invalid request/response */ +}; + +enum act_parse_ret { + ACT_RET_PRS_OK, /* continue processing. */ + ACT_RET_PRS_ERR, /* abort processing. */ +}; + +/* Option flags passed to custom actions */ +enum act_opt { + ACT_OPT_NONE = 0x00000000, /* no flag */ + ACT_OPT_FINAL = 0x00000001, /* last call, cannot yield */ + ACT_OPT_FIRST = 0x00000002, /* first call for this action */ +}; + +/* Flags used to describe the action. */ +enum act_flag { + ACT_FLAG_FINAL = 1 << 0, /* the action stops the rules evaluation when executed */ +}; + + +/* known actions to be used without any action function pointer. This enum is + * typically used in a switch case, if and only if .action_ptr is undefined. So + * if an action function is defined for one of following action types, the + * function have the priority over the switch. + */ +enum act_name { + ACT_CUSTOM = 0, + + /* common action */ + ACT_ACTION_ALLOW, + ACT_ACTION_DENY, + + /* common http actions .*/ + ACT_HTTP_REDIR, + + /* http request actions. */ + ACT_HTTP_REQ_TARPIT, + + /* tcp actions */ + ACT_TCP_EXPECT_PX, + ACT_TCP_EXPECT_CIP, + ACT_TCP_CLOSE, /* close at the sender's */ +}; + +/* Timeout name valid for a set-timeout rule */ +enum act_timeout_name { + ACT_TIMEOUT_SERVER, + ACT_TIMEOUT_TUNNEL, + ACT_TIMEOUT_CLIENT, +}; + +enum act_normalize_uri { + ACT_NORMALIZE_URI_PATH_MERGE_SLASHES, + ACT_NORMALIZE_URI_PATH_STRIP_DOT, + ACT_NORMALIZE_URI_PATH_STRIP_DOTDOT, + ACT_NORMALIZE_URI_PATH_STRIP_DOTDOT_FULL, + ACT_NORMALIZE_URI_QUERY_SORT_BY_NAME, + ACT_NORMALIZE_URI_PERCENT_TO_UPPERCASE, + ACT_NORMALIZE_URI_PERCENT_TO_UPPERCASE_STRICT, + ACT_NORMALIZE_URI_PERCENT_DECODE_UNRESERVED, + ACT_NORMALIZE_URI_PERCENT_DECODE_UNRESERVED_STRICT, + ACT_NORMALIZE_URI_FRAGMENT_STRIP, + ACT_NORMALIZE_URI_FRAGMENT_ENCODE, +}; + +/* NOTE: if <.action_ptr> is defined, the referenced function will always be + * called regardless the action type. */ +struct act_rule { + struct list list; + struct acl_cond *cond; /* acl condition to meet */ + unsigned int action; /* ACT_* or any meaningful value if action_ptr is defined */ + unsigned int flags; /* ACT_FLAG_* */ + enum act_from from; /* ACT_F_* */ + enum act_return (*action_ptr)(struct act_rule *rule, struct proxy *px, /* ptr to custom action */ + struct session *sess, struct stream *s, int opts); + int (*check_ptr)(struct act_rule *rule, struct proxy *px, char **err); /* ptr to check function */ + void (*release_ptr)(struct act_rule *rule); /* ptr to release function */ + const struct action_kw *kw; + struct applet applet; /* used for the applet registration. */ + union { + struct { + struct sample_expr *expr; + char *varname; + char *resolvers_id; + struct resolvers *resolvers; + struct resolv_options *opts; + } resolv; /* resolving */ + struct { + int i; /* integer param (status, nice, loglevel, ..) */ + struct ist str; /* string param (reason, header name, ...) */ + struct list fmt; /* log-format compatible expression */ + struct my_regex *re; /* used by replace-header/value/uri/path */ + } http; /* args used by some HTTP rules */ + struct http_reply *http_reply; /* HTTP response to be used by return/deny/tarpit rules */ + struct redirect_rule *redir; /* redirect rule or "http-request redirect" */ + struct { + char *ref; /* MAP or ACL file name to update */ + struct list key; /* pattern to retrieve MAP or ACL key */ + struct list value; /* pattern to retrieve MAP value */ + } map; + struct sample_expr *expr; + struct { + struct sample_expr *expr; /* expression used as the key */ + struct cap_hdr *hdr; /* the capture storage */ + } cap; + struct { + struct sample_expr *expr; + int idx; + } capid; + struct { + int value; /* plain timeout value in ms if no expr is used */ + enum act_timeout_name type; /* timeout type */ + struct sample_expr *expr; /* timeout value as an expression */ + } timeout; + struct hlua_rule *hlua_rule; + struct { + struct list fmt; /* log-format compatible expression */ + struct sample_expr *expr; + uint64_t name_hash; + enum vars_scope scope; + uint conditions; /* Bitfield of the conditions passed to this set-var call */ + } vars; + struct { + int sc; + unsigned int idx; + long long int value; + struct sample_expr *expr; + } gpc; + struct { + int sc; + unsigned int idx; + long long int value; + struct sample_expr *expr; + } gpt; + struct track_ctr_prm trk_ctr; + struct { + char *srvname; /* server name from config parsing. */ + struct server *srv; /* target server to attach the connection */ + struct sample_expr *name; /* used to differentiate idle connections */ + } attach_srv; /* 'attach-srv' rule */ + struct { + void *p[4]; + } act; /* generic pointers to be used by custom actions */ + } arg; /* arguments used by some actions */ + struct { + char *file; /* file name where the rule appears (or NULL) */ + int line; /* line number where the rule appears */ + } conf; +}; + +struct action_kw { + const char *kw; + enum act_parse_ret (*parse)(const char **args, int *cur_arg, struct proxy *px, + struct act_rule *rule, char **err); + int flags; + void *private; +}; + +struct action_kw_list { + struct list list; + struct action_kw kw[VAR_ARRAY]; +}; + +#endif /* _HAPROXY_ACTION_T_H */ |