summaryrefslogtreecommitdiffstats
path: root/src/tcpcheck.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/tcpcheck.c')
-rw-r--r--src/tcpcheck.c5209
1 files changed, 5209 insertions, 0 deletions
diff --git a/src/tcpcheck.c b/src/tcpcheck.c
new file mode 100644
index 0000000..6441d34
--- /dev/null
+++ b/src/tcpcheck.c
@@ -0,0 +1,5209 @@
+/*
+ * Health-checks functions.
+ *
+ * Copyright 2000-2009,2020 Willy Tarreau <w@1wt.eu>
+ * Copyright 2007-2010 Krzysztof Piotr Oledzki <ole@ans.pl>
+ * Copyright 2013 Baptiste Assmann <bedis9@gmail.com>
+ * Copyright 2020 Gaetan Rivet <grive@u256.net>
+ * Copyright 2020 Christopher Faulet <cfaulet@haproxy.com>
+ * Crown Copyright 2022 Defence Science and Technology Laboratory <dstlipgroup@dstl.gov.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <haproxy/action.h>
+#include <haproxy/api.h>
+#include <haproxy/cfgparse.h>
+#include <haproxy/check.h>
+#include <haproxy/chunk.h>
+#include <haproxy/connection.h>
+#include <haproxy/errors.h>
+#include <haproxy/global.h>
+#include <haproxy/h1.h>
+#include <haproxy/http.h>
+#include <haproxy/http_htx.h>
+#include <haproxy/htx.h>
+#include <haproxy/istbuf.h>
+#include <haproxy/list.h>
+#include <haproxy/log.h>
+#include <haproxy/net_helper.h>
+#include <haproxy/protocol.h>
+#include <haproxy/proxy-t.h>
+#include <haproxy/regex.h>
+#include <haproxy/sample.h>
+#include <haproxy/server.h>
+#include <haproxy/ssl_sock.h>
+#include <haproxy/stconn.h>
+#include <haproxy/task.h>
+#include <haproxy/tcpcheck.h>
+#include <haproxy/ticks.h>
+#include <haproxy/tools.h>
+#include <haproxy/trace.h>
+#include <haproxy/vars.h>
+
+
+#define TRACE_SOURCE &trace_check
+
+/* Global tree to share all tcp-checks */
+struct eb_root shared_tcpchecks = EB_ROOT;
+
+
+DECLARE_POOL(pool_head_tcpcheck_rule, "tcpcheck_rule", sizeof(struct tcpcheck_rule));
+
+/**************************************************************************/
+/*************** Init/deinit tcp-check rules and ruleset ******************/
+/**************************************************************************/
+/* Releases memory allocated for a log-format string */
+static void free_tcpcheck_fmt(struct list *fmt)
+{
+ struct logformat_node *lf, *lfb;
+
+ list_for_each_entry_safe(lf, lfb, fmt, list) {
+ LIST_DELETE(&lf->list);
+ release_sample_expr(lf->expr);
+ free(lf->arg);
+ free(lf);
+ }
+}
+
+/* Releases memory allocated for an HTTP header used in a tcp-check send rule */
+void free_tcpcheck_http_hdr(struct tcpcheck_http_hdr *hdr)
+{
+ if (!hdr)
+ return;
+
+ free_tcpcheck_fmt(&hdr->value);
+ istfree(&hdr->name);
+ free(hdr);
+}
+
+/* Releases memory allocated for an HTTP header list used in a tcp-check send
+ * rule
+ */
+static void free_tcpcheck_http_hdrs(struct list *hdrs)
+{
+ struct tcpcheck_http_hdr *hdr, *bhdr;
+
+ list_for_each_entry_safe(hdr, bhdr, hdrs, list) {
+ LIST_DELETE(&hdr->list);
+ free_tcpcheck_http_hdr(hdr);
+ }
+}
+
+/* Releases memory allocated for a tcp-check. If in_pool is set, it means the
+ * tcp-check was allocated using a memory pool (it is used to instantiate email
+ * alerts).
+ */
+void free_tcpcheck(struct tcpcheck_rule *rule, int in_pool)
+{
+ if (!rule)
+ return;
+
+ free(rule->comment);
+ switch (rule->action) {
+ case TCPCHK_ACT_SEND:
+ switch (rule->send.type) {
+ case TCPCHK_SEND_STRING:
+ case TCPCHK_SEND_BINARY:
+ istfree(&rule->send.data);
+ break;
+ case TCPCHK_SEND_STRING_LF:
+ case TCPCHK_SEND_BINARY_LF:
+ free_tcpcheck_fmt(&rule->send.fmt);
+ break;
+ case TCPCHK_SEND_HTTP:
+ free(rule->send.http.meth.str.area);
+ if (!(rule->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT))
+ istfree(&rule->send.http.uri);
+ else
+ free_tcpcheck_fmt(&rule->send.http.uri_fmt);
+ istfree(&rule->send.http.vsn);
+ free_tcpcheck_http_hdrs(&rule->send.http.hdrs);
+ if (!(rule->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT))
+ istfree(&rule->send.http.body);
+ else
+ free_tcpcheck_fmt(&rule->send.http.body_fmt);
+ break;
+ case TCPCHK_SEND_UNDEF:
+ break;
+ }
+ break;
+ case TCPCHK_ACT_EXPECT:
+ free_tcpcheck_fmt(&rule->expect.onerror_fmt);
+ free_tcpcheck_fmt(&rule->expect.onsuccess_fmt);
+ release_sample_expr(rule->expect.status_expr);
+ switch (rule->expect.type) {
+ case TCPCHK_EXPECT_HTTP_STATUS:
+ free(rule->expect.codes.codes);
+ break;
+ case TCPCHK_EXPECT_STRING:
+ case TCPCHK_EXPECT_BINARY:
+ case TCPCHK_EXPECT_HTTP_BODY:
+ istfree(&rule->expect.data);
+ break;
+ case TCPCHK_EXPECT_STRING_REGEX:
+ case TCPCHK_EXPECT_BINARY_REGEX:
+ case TCPCHK_EXPECT_HTTP_STATUS_REGEX:
+ case TCPCHK_EXPECT_HTTP_BODY_REGEX:
+ regex_free(rule->expect.regex);
+ break;
+ case TCPCHK_EXPECT_STRING_LF:
+ case TCPCHK_EXPECT_BINARY_LF:
+ case TCPCHK_EXPECT_HTTP_BODY_LF:
+ free_tcpcheck_fmt(&rule->expect.fmt);
+ break;
+ case TCPCHK_EXPECT_HTTP_HEADER:
+ if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_REG)
+ regex_free(rule->expect.hdr.name_re);
+ else if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT)
+ free_tcpcheck_fmt(&rule->expect.hdr.name_fmt);
+ else
+ istfree(&rule->expect.hdr.name);
+
+ if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_REG)
+ regex_free(rule->expect.hdr.value_re);
+ else if (rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT)
+ free_tcpcheck_fmt(&rule->expect.hdr.value_fmt);
+ else if (!(rule->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_NONE))
+ istfree(&rule->expect.hdr.value);
+ break;
+ case TCPCHK_EXPECT_CUSTOM:
+ case TCPCHK_EXPECT_UNDEF:
+ break;
+ }
+ break;
+ case TCPCHK_ACT_CONNECT:
+ free(rule->connect.sni);
+ free(rule->connect.alpn);
+ release_sample_expr(rule->connect.port_expr);
+ break;
+ case TCPCHK_ACT_COMMENT:
+ break;
+ case TCPCHK_ACT_ACTION_KW:
+ free(rule->action_kw.rule);
+ break;
+ }
+
+ if (in_pool)
+ pool_free(pool_head_tcpcheck_rule, rule);
+ else
+ free(rule);
+}
+
+/* Creates a tcp-check variable used in preset variables before executing a
+ * tcp-check ruleset.
+ */
+struct tcpcheck_var *create_tcpcheck_var(const struct ist name)
+{
+ struct tcpcheck_var *var = NULL;
+
+ var = calloc(1, sizeof(*var));
+ if (var == NULL)
+ return NULL;
+
+ var->name = istdup(name);
+ if (!isttest(var->name)) {
+ free(var);
+ return NULL;
+ }
+
+ LIST_INIT(&var->list);
+ return var;
+}
+
+/* Releases memory allocated for a preset tcp-check variable */
+void free_tcpcheck_var(struct tcpcheck_var *var)
+{
+ if (!var)
+ return;
+
+ istfree(&var->name);
+ if (var->data.type == SMP_T_STR || var->data.type == SMP_T_BIN)
+ free(var->data.u.str.area);
+ else if (var->data.type == SMP_T_METH && var->data.u.meth.meth == HTTP_METH_OTHER)
+ free(var->data.u.meth.str.area);
+ free(var);
+}
+
+/* Releases a list of preset tcp-check variables */
+void free_tcpcheck_vars(struct list *vars)
+{
+ struct tcpcheck_var *var, *back;
+
+ list_for_each_entry_safe(var, back, vars, list) {
+ LIST_DELETE(&var->list);
+ free_tcpcheck_var(var);
+ }
+}
+
+/* Duplicate a list of preset tcp-check variables */
+int dup_tcpcheck_vars(struct list *dst, const struct list *src)
+{
+ const struct tcpcheck_var *var;
+ struct tcpcheck_var *new = NULL;
+
+ list_for_each_entry(var, src, list) {
+ new = create_tcpcheck_var(var->name);
+ if (!new)
+ goto error;
+ new->data.type = var->data.type;
+ if (var->data.type == SMP_T_STR || var->data.type == SMP_T_BIN) {
+ if (chunk_dup(&new->data.u.str, &var->data.u.str) == NULL)
+ goto error;
+ if (var->data.type == SMP_T_STR)
+ new->data.u.str.area[new->data.u.str.data] = 0;
+ }
+ else if (var->data.type == SMP_T_METH && var->data.u.meth.meth == HTTP_METH_OTHER) {
+ if (chunk_dup(&new->data.u.str, &var->data.u.str) == NULL)
+ goto error;
+ new->data.u.str.area[new->data.u.str.data] = 0;
+ new->data.u.meth.meth = var->data.u.meth.meth;
+ }
+ else
+ new->data.u = var->data.u;
+ LIST_APPEND(dst, &new->list);
+ }
+ return 1;
+
+ error:
+ free(new);
+ return 0;
+}
+
+/* Looks for a shared tcp-check ruleset given its name. */
+struct tcpcheck_ruleset *find_tcpcheck_ruleset(const char *name)
+{
+ struct tcpcheck_ruleset *rs;
+ struct ebpt_node *node;
+
+ node = ebis_lookup_len(&shared_tcpchecks, name, strlen(name));
+ if (node) {
+ rs = container_of(node, typeof(*rs), node);
+ return rs;
+ }
+ return NULL;
+}
+
+/* Creates a new shared tcp-check ruleset and insert it in shared_tcpchecks
+ * tree.
+ */
+struct tcpcheck_ruleset *create_tcpcheck_ruleset(const char *name)
+{
+ struct tcpcheck_ruleset *rs;
+
+ rs = calloc(1, sizeof(*rs));
+ if (rs == NULL)
+ return NULL;
+
+ rs->node.key = strdup(name);
+ if (rs->node.key == NULL) {
+ free(rs);
+ return NULL;
+ }
+
+ LIST_INIT(&rs->rules);
+ ebis_insert(&shared_tcpchecks, &rs->node);
+ return rs;
+}
+
+/* Releases memory allocated by a tcp-check ruleset. */
+void free_tcpcheck_ruleset(struct tcpcheck_ruleset *rs)
+{
+ struct tcpcheck_rule *r, *rb;
+
+ if (!rs)
+ return;
+
+ ebpt_delete(&rs->node);
+ free(rs->node.key);
+ list_for_each_entry_safe(r, rb, &rs->rules, list) {
+ LIST_DELETE(&r->list);
+ free_tcpcheck(r, 0);
+ }
+ free(rs);
+}
+
+
+/**************************************************************************/
+/**************** Everything about tcp-checks execution *******************/
+/**************************************************************************/
+/* Returns the id of a step in a tcp-check ruleset */
+int tcpcheck_get_step_id(const struct check *check, const struct tcpcheck_rule *rule)
+{
+ if (!rule)
+ rule = check->current_step;
+
+ /* no last started step => first step */
+ if (!rule)
+ return 1;
+
+ /* last step is the first implicit connect */
+ if (rule->index == 0 &&
+ rule->action == TCPCHK_ACT_CONNECT &&
+ (rule->connect.options & TCPCHK_OPT_IMPLICIT))
+ return 0;
+
+ return rule->index + 1;
+}
+
+/* Returns the first non COMMENT/ACTION_KW tcp-check rule from list <list> or
+ * NULL if none was found.
+ */
+struct tcpcheck_rule *get_first_tcpcheck_rule(const struct tcpcheck_rules *rules)
+{
+ struct tcpcheck_rule *r;
+
+ list_for_each_entry(r, rules->list, list) {
+ if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW)
+ return r;
+ }
+ return NULL;
+}
+
+/* Returns the last non COMMENT/ACTION_KW tcp-check rule from list <list> or
+ * NULL if none was found.
+ */
+static struct tcpcheck_rule *get_last_tcpcheck_rule(struct tcpcheck_rules *rules)
+{
+ struct tcpcheck_rule *r;
+
+ list_for_each_entry_rev(r, rules->list, list) {
+ if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW)
+ return r;
+ }
+ return NULL;
+}
+
+/* Returns the non COMMENT/ACTION_KW tcp-check rule from list <list> following
+ * <start> or NULL if non was found. If <start> is NULL, it relies on
+ * get_first_tcpcheck_rule().
+ */
+static struct tcpcheck_rule *get_next_tcpcheck_rule(struct tcpcheck_rules *rules, struct tcpcheck_rule *start)
+{
+ struct tcpcheck_rule *r;
+
+ if (!start)
+ return get_first_tcpcheck_rule(rules);
+
+ r = LIST_NEXT(&start->list, typeof(r), list);
+ list_for_each_entry_from(r, rules->list, list) {
+ if (r->action != TCPCHK_ACT_COMMENT && r->action != TCPCHK_ACT_ACTION_KW)
+ return r;
+ }
+ return NULL;
+}
+
+
+/* Creates info message when a tcp-check healthcheck fails on an expect rule */
+static void tcpcheck_expect_onerror_message(struct buffer *msg, struct check *check, struct tcpcheck_rule *rule,
+ int match, struct ist info)
+{
+ struct sample *smp;
+
+ /* Follows these step to produce the info message:
+ * 1. if info field is already provided, copy it
+ * 2. if the expect rule provides an onerror log-format string,
+ * use it to produce the message
+ * 3. the expect rule is part of a protocol check (http, redis, mysql...), do nothing
+ * 4. Otherwise produce the generic tcp-check info message
+ */
+ if (istlen(info)) {
+ chunk_istcat(msg, info);
+ goto comment;
+ }
+ else if (!LIST_ISEMPTY(&rule->expect.onerror_fmt)) {
+ msg->data += sess_build_logline(check->sess, NULL, b_tail(msg), b_room(msg), &rule->expect.onerror_fmt);
+ goto comment;
+ }
+
+ if (check->type == PR_O2_TCPCHK_CHK &&
+ (check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) != TCPCHK_RULES_TCP_CHK)
+ goto comment;
+
+ chunk_strcat(msg, (match ? "TCPCHK matched unwanted content" : "TCPCHK did not match content"));
+ switch (rule->expect.type) {
+ case TCPCHK_EXPECT_HTTP_STATUS:
+ chunk_appendf(msg, "(status codes) at step %d", tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_STRING:
+ case TCPCHK_EXPECT_HTTP_BODY:
+ chunk_appendf(msg, " '%.*s' at step %d", (unsigned int)istlen(rule->expect.data), istptr(rule->expect.data),
+ tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_BINARY:
+ chunk_appendf(msg, " (binary) at step %d", tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_STRING_REGEX:
+ case TCPCHK_EXPECT_HTTP_STATUS_REGEX:
+ case TCPCHK_EXPECT_HTTP_BODY_REGEX:
+ chunk_appendf(msg, " (regex) at step %d", tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_BINARY_REGEX:
+ chunk_appendf(msg, " (binary regex) at step %d", tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_STRING_LF:
+ case TCPCHK_EXPECT_HTTP_BODY_LF:
+ chunk_appendf(msg, " (log-format string) at step %d", tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_BINARY_LF:
+ chunk_appendf(msg, " (log-format binary) at step %d", tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_CUSTOM:
+ chunk_appendf(msg, " (custom function) at step %d", tcpcheck_get_step_id(check, rule));
+ break;
+ case TCPCHK_EXPECT_HTTP_HEADER:
+ chunk_appendf(msg, " (header pattern) at step %d", tcpcheck_get_step_id(check, rule));
+ case TCPCHK_EXPECT_UNDEF:
+ /* Should never happen. */
+ return;
+ }
+
+ comment:
+ /* If the failing expect rule provides a comment, it is concatenated to
+ * the info message.
+ */
+ if (rule->comment) {
+ chunk_strcat(msg, " comment: ");
+ chunk_strcat(msg, rule->comment);
+ }
+
+ /* Finally, the check status code is set if the failing expect rule
+ * defines a status expression.
+ */
+ if (rule->expect.status_expr) {
+ smp = sample_fetch_as_type(check->proxy, check->sess, NULL, SMP_OPT_DIR_RES | SMP_OPT_FINAL,
+ rule->expect.status_expr, SMP_T_STR);
+
+ if (smp && sample_casts[smp->data.type][SMP_T_SINT] &&
+ sample_casts[smp->data.type][SMP_T_SINT](smp))
+ check->code = smp->data.u.sint;
+ }
+
+ *(b_tail(msg)) = '\0';
+}
+
+/* Creates info message when a tcp-check healthcheck succeeds on an expect rule */
+static void tcpcheck_expect_onsuccess_message(struct buffer *msg, struct check *check, struct tcpcheck_rule *rule,
+ struct ist info)
+{
+ struct sample *smp;
+
+ /* Follows these step to produce the info message:
+ * 1. if info field is already provided, copy it
+ * 2. if the expect rule provides an onsucces log-format string,
+ * use it to produce the message
+ * 3. the expect rule is part of a protocol check (http, redis, mysql...), do nothing
+ * 4. Otherwise produce the generic tcp-check info message
+ */
+ if (istlen(info))
+ chunk_istcat(msg, info);
+ if (!LIST_ISEMPTY(&rule->expect.onsuccess_fmt))
+ msg->data += sess_build_logline(check->sess, NULL, b_tail(msg), b_room(msg),
+ &rule->expect.onsuccess_fmt);
+ else if (check->type == PR_O2_TCPCHK_CHK &&
+ (check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_TCP_CHK)
+ chunk_strcat(msg, "(tcp-check)");
+
+ /* Finally, the check status code is set if the expect rule defines a
+ * status expression.
+ */
+ if (rule->expect.status_expr) {
+ smp = sample_fetch_as_type(check->proxy, check->sess, NULL, SMP_OPT_DIR_RES | SMP_OPT_FINAL,
+ rule->expect.status_expr, SMP_T_STR);
+
+ if (smp && sample_casts[smp->data.type][SMP_T_SINT] &&
+ sample_casts[smp->data.type][SMP_T_SINT](smp))
+ check->code = smp->data.u.sint;
+ }
+
+ *(b_tail(msg)) = '\0';
+}
+
+/* Internal functions to parse and validate a MySQL packet in the context of an
+ * expect rule. It start to parse the input buffer at the offset <offset>. If
+ * <last_read> is set, no more data are expected.
+ */
+static enum tcpcheck_eval_ret tcpcheck_mysql_expect_packet(struct check *check, struct tcpcheck_rule *rule,
+ unsigned int offset, int last_read)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ enum healthcheck_status status;
+ struct buffer *msg = NULL;
+ struct ist desc = IST_NULL;
+ unsigned int err = 0, plen = 0;
+
+
+ TRACE_ENTER(CHK_EV_TCPCHK_EXP, check);
+
+ /* 3 Bytes for the packet length and 1 byte for the sequence id */
+ if (b_data(&check->bi) < offset+4) {
+ if (!last_read)
+ goto wait_more_data;
+
+ /* invalid length or truncated response */
+ status = HCHK_STATUS_L7RSP;
+ goto error;
+ }
+
+ plen = ((unsigned char) *b_peek(&check->bi, offset)) +
+ (((unsigned char) *(b_peek(&check->bi, offset+1))) << 8) +
+ (((unsigned char) *(b_peek(&check->bi, offset+2))) << 16);
+
+ if (b_data(&check->bi) < offset+plen+4) {
+ if (!last_read)
+ goto wait_more_data;
+
+ /* invalid length or truncated response */
+ status = HCHK_STATUS_L7RSP;
+ goto error;
+ }
+
+ if (*b_peek(&check->bi, offset+4) == '\xff') {
+ /* MySQL Error packet always begin with field_count = 0xff */
+ status = HCHK_STATUS_L7STS;
+ err = ((unsigned char) *b_peek(&check->bi, offset+5)) +
+ (((unsigned char) *(b_peek(&check->bi, offset+6))) << 8);
+ desc = ist2(b_peek(&check->bi, offset+7), b_data(&check->bi) - offset - 7);
+ goto error;
+ }
+
+ if (get_next_tcpcheck_rule(check->tcpcheck_rules, rule) != NULL) {
+ /* Not the last rule, continue */
+ goto out;
+ }
+
+ /* We set the MySQL Version in description for information purpose
+ * FIXME : it can be cool to use MySQL Version for other purpose,
+ * like mark as down old MySQL server.
+ */
+ status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD);
+ set_server_check_status(check, status, b_peek(&check->bi, 5));
+
+ out:
+ free_trash_chunk(msg);
+ TRACE_LEAVE(CHK_EV_TCPCHK_EXP, check, 0, 0, (size_t[]){ret});
+ return ret;
+
+ error:
+ ret = TCPCHK_EVAL_STOP;
+ check->code = err;
+ msg = alloc_trash_chunk();
+ if (msg)
+ tcpcheck_expect_onerror_message(msg, check, rule, 0, desc);
+ set_server_check_status(check, status, (msg ? b_head(msg) : NULL));
+ goto out;
+
+ wait_more_data:
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ ret = TCPCHK_EVAL_WAIT;
+ goto out;
+}
+
+/* Custom tcp-check expect function to parse and validate the MySQL initial
+ * handshake packet. Returns TCPCHK_EVAL_WAIT to wait for more data,
+ * TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if an
+ * error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_mysql_expect_iniths(struct check *check, struct tcpcheck_rule *rule, int last_read)
+{
+ return tcpcheck_mysql_expect_packet(check, rule, 0, last_read);
+}
+
+/* Custom tcp-check expect function to parse and validate the MySQL OK packet
+ * following the initial handshake. Returns TCPCHK_EVAL_WAIT to wait for more
+ * data, TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if
+ * an error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_mysql_expect_ok(struct check *check, struct tcpcheck_rule *rule, int last_read)
+{
+ unsigned int hslen = 0;
+
+ hslen = 4 + ((unsigned char) *b_head(&check->bi)) +
+ (((unsigned char) *(b_peek(&check->bi, 1))) << 8) +
+ (((unsigned char) *(b_peek(&check->bi, 2))) << 16);
+
+ return tcpcheck_mysql_expect_packet(check, rule, hslen, last_read);
+}
+
+/* Custom tcp-check expect function to parse and validate the LDAP bind response
+ * package packet. Returns TCPCHK_EVAL_WAIT to wait for more data,
+ * TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if an
+ * error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_ldap_expect_bindrsp(struct check *check, struct tcpcheck_rule *rule, int last_read)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ enum healthcheck_status status;
+ struct buffer *msg = NULL;
+ struct ist desc = IST_NULL;
+ char *ptr;
+ unsigned short nbytes = 0;
+ size_t msglen = 0;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_EXP, check);
+
+ /* Check if the server speaks LDAP (ASN.1/BER)
+ * http://en.wikipedia.org/wiki/Basic_Encoding_Rules
+ * http://tools.ietf.org/html/rfc4511
+ */
+ ptr = b_head(&check->bi) + 1;
+
+ /* size of LDAPMessage */
+ if (*ptr & 0x80) {
+ /* For message size encoded on several bytes, we only handle
+ * size encoded on 2 or 4 bytes. There is no reason to make this
+ * part to complex because only Active Directory is known to
+ * encode BindReponse length on 4 bytes.
+ */
+ nbytes = (*ptr & 0x7f);
+ if (b_data(&check->bi) < 1 + nbytes)
+ goto too_short;
+ switch (nbytes) {
+ case 4: msglen = read_n32(ptr+1); break;
+ case 2: msglen = read_n16(ptr+1); break;
+ default:
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Not LDAPv3 protocol");
+ goto error;
+ }
+ }
+ else
+ msglen = *ptr;
+ ptr += 1 + nbytes;
+
+ if (b_data(&check->bi) < 2 + nbytes + msglen)
+ goto too_short;
+
+ /* http://tools.ietf.org/html/rfc4511#section-4.2.2
+ * messageID: 0x02 0x01 0x01: INTEGER 1
+ * protocolOp: 0x61: bindResponse
+ */
+ if (memcmp(ptr, "\x02\x01\x01\x61", 4) != 0) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Not LDAPv3 protocol");
+ goto error;
+ }
+ ptr += 4;
+
+ /* skip size of bindResponse */
+ nbytes = 0;
+ if (*ptr & 0x80)
+ nbytes = (*ptr & 0x7f);
+ ptr += 1 + nbytes;
+
+ /* http://tools.ietf.org/html/rfc4511#section-4.1.9
+ * ldapResult: 0x0a 0x01: ENUMERATION
+ */
+ if (memcmp(ptr, "\x0a\x01", 2) != 0) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Not LDAPv3 protocol");
+ goto error;
+ }
+ ptr += 2;
+
+ /* http://tools.ietf.org/html/rfc4511#section-4.1.9
+ * resultCode
+ */
+ check->code = *ptr;
+ if (check->code) {
+ status = HCHK_STATUS_L7STS;
+ desc = ist("See RFC: http://tools.ietf.org/html/rfc4511#section-4.1.9");
+ goto error;
+ }
+
+ status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD);
+ set_server_check_status(check, status, "Success");
+
+ out:
+ free_trash_chunk(msg);
+ TRACE_LEAVE(CHK_EV_TCPCHK_EXP, check, 0, 0, (size_t[]){ret});
+ return ret;
+
+ error:
+ ret = TCPCHK_EVAL_STOP;
+ msg = alloc_trash_chunk();
+ if (msg)
+ tcpcheck_expect_onerror_message(msg, check, rule, 0, desc);
+ set_server_check_status(check, status, (msg ? b_head(msg) : NULL));
+ goto out;
+
+ too_short:
+ if (!last_read)
+ goto wait_more_data;
+ /* invalid length or truncated response */
+ status = HCHK_STATUS_L7RSP;
+ goto error;
+
+ wait_more_data:
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ ret = TCPCHK_EVAL_WAIT;
+ goto out;
+}
+
+/* Custom tcp-check expect function to parse and validate the SPOP hello agent
+ * frame. Returns TCPCHK_EVAL_WAIT to wait for more data, TCPCHK_EVAL_CONTINUE
+ * to evaluate the next rule or TCPCHK_EVAL_STOP if an error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_spop_expect_agenthello(struct check *check, struct tcpcheck_rule *rule, int last_read)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ enum healthcheck_status status;
+ struct buffer *msg = NULL;
+ struct ist desc = IST_NULL;
+ unsigned int framesz;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_EXP, check);
+
+ memcpy(&framesz, b_head(&check->bi), 4);
+ framesz = ntohl(framesz);
+
+ if (!last_read && b_data(&check->bi) < (4+framesz))
+ goto wait_more_data;
+
+ memset(b_orig(&trash), 0, b_size(&trash));
+ if (spoe_handle_healthcheck_response(b_peek(&check->bi, 4), framesz, b_orig(&trash), HCHK_DESC_LEN) == -1) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist2(b_orig(&trash), strlen(b_orig(&trash)));
+ goto error;
+ }
+
+ status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD);
+ set_server_check_status(check, status, "SPOA server is ok");
+
+ out:
+ free_trash_chunk(msg);
+ TRACE_LEAVE(CHK_EV_TCPCHK_EXP, check, 0, 0, (size_t[]){ret});
+ return ret;
+
+ error:
+ ret = TCPCHK_EVAL_STOP;
+ msg = alloc_trash_chunk();
+ if (msg)
+ tcpcheck_expect_onerror_message(msg, check, rule, 0, desc);
+ set_server_check_status(check, status, (msg ? b_head(msg) : NULL));
+ goto out;
+
+ wait_more_data:
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ ret = TCPCHK_EVAL_WAIT;
+ goto out;
+}
+
+/* Custom tcp-check expect function to parse and validate the agent-check
+ * reply. Returns TCPCHK_EVAL_WAIT to wait for more data, TCPCHK_EVAL_CONTINUE
+ * to evaluate the next rule or TCPCHK_EVAL_STOP if an error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_agent_expect_reply(struct check *check, struct tcpcheck_rule *rule, int last_read)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_STOP;
+ enum healthcheck_status status = HCHK_STATUS_CHECKED;
+ const char *hs = NULL; /* health status */
+ const char *as = NULL; /* admin status */
+ const char *ps = NULL; /* performance status */
+ const char *sc = NULL; /* maxconn */
+ const char *err = NULL; /* first error to report */
+ const char *wrn = NULL; /* first warning to report */
+ char *cmd, *p;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_EXP, check);
+
+ /* We're getting an agent check response. The agent could
+ * have been disabled in the mean time with a long check
+ * still pending. It is important that we ignore the whole
+ * response.
+ */
+ if (!(check->state & CHK_ST_ENABLED))
+ goto out;
+
+ /* The agent supports strings made of a single line ended by the
+ * first CR ('\r') or LF ('\n'). This line is composed of words
+ * delimited by spaces (' '), tabs ('\t'), or commas (','). The
+ * line may optionally contained a description of a state change
+ * after a sharp ('#'), which is only considered if a health state
+ * is announced.
+ *
+ * Words may be composed of :
+ * - a numeric weight suffixed by the percent character ('%').
+ * - a health status among "up", "down", "stopped", and "fail".
+ * - an admin status among "ready", "drain", "maint".
+ *
+ * These words may appear in any order. If multiple words of the
+ * same category appear, the last one wins.
+ */
+
+ p = b_head(&check->bi);
+ while (*p && *p != '\n' && *p != '\r')
+ p++;
+
+ if (!*p) {
+ if (!last_read)
+ goto wait_more_data;
+
+ /* at least inform the admin that the agent is mis-behaving */
+ set_server_check_status(check, check->status, "Ignoring incomplete line from agent");
+ goto out;
+ }
+
+ *p = 0;
+ cmd = b_head(&check->bi);
+
+ while (*cmd) {
+ /* look for next word */
+ if (*cmd == ' ' || *cmd == '\t' || *cmd == ',') {
+ cmd++;
+ continue;
+ }
+
+ if (*cmd == '#') {
+ /* this is the beginning of a health status description,
+ * skip the sharp and blanks.
+ */
+ cmd++;
+ while (*cmd == '\t' || *cmd == ' ')
+ cmd++;
+ break;
+ }
+
+ /* find the end of the word so that we have a null-terminated
+ * word between <cmd> and <p>.
+ */
+ p = cmd + 1;
+ while (*p && *p != '\t' && *p != ' ' && *p != '\n' && *p != ',')
+ p++;
+ if (*p)
+ *p++ = 0;
+
+ /* first, health statuses */
+ if (strcasecmp(cmd, "up") == 0) {
+ check->health = check->rise + check->fall - 1;
+ status = HCHK_STATUS_L7OKD;
+ hs = cmd;
+ }
+ else if (strcasecmp(cmd, "down") == 0) {
+ check->health = 0;
+ status = HCHK_STATUS_L7STS;
+ hs = cmd;
+ }
+ else if (strcasecmp(cmd, "stopped") == 0) {
+ check->health = 0;
+ status = HCHK_STATUS_L7STS;
+ hs = cmd;
+ }
+ else if (strcasecmp(cmd, "fail") == 0) {
+ check->health = 0;
+ status = HCHK_STATUS_L7STS;
+ hs = cmd;
+ }
+ /* admin statuses */
+ else if (strcasecmp(cmd, "ready") == 0) {
+ as = cmd;
+ }
+ else if (strcasecmp(cmd, "drain") == 0) {
+ as = cmd;
+ }
+ else if (strcasecmp(cmd, "maint") == 0) {
+ as = cmd;
+ }
+ /* try to parse a weight here and keep the last one */
+ else if (isdigit((unsigned char)*cmd) && strchr(cmd, '%') != NULL) {
+ ps = cmd;
+ }
+ /* try to parse a maxconn here */
+ else if (strncasecmp(cmd, "maxconn:", strlen("maxconn:")) == 0) {
+ sc = cmd;
+ }
+ else {
+ /* keep a copy of the first error */
+ if (!err)
+ err = cmd;
+ }
+ /* skip to next word */
+ cmd = p;
+ }
+ /* here, cmd points either to \0 or to the beginning of a
+ * description. Skip possible leading spaces.
+ */
+ while (*cmd == ' ' || *cmd == '\n')
+ cmd++;
+
+ /* First, update the admin status so that we avoid sending other
+ * possibly useless warnings and can also update the health if
+ * present after going back up.
+ */
+ if (as) {
+ if (strcasecmp(as, "drain") == 0) {
+ TRACE_DEVEL("set server into DRAIN mode", CHK_EV_TCPCHK_EXP, check);
+ srv_adm_set_drain(check->server);
+ }
+ else if (strcasecmp(as, "maint") == 0) {
+ TRACE_DEVEL("set server into MAINT mode", CHK_EV_TCPCHK_EXP, check);
+ srv_adm_set_maint(check->server);
+ }
+ else {
+ TRACE_DEVEL("set server into READY mode", CHK_EV_TCPCHK_EXP, check);
+ srv_adm_set_ready(check->server);
+ }
+ }
+
+ /* now change weights */
+ if (ps) {
+ const char *msg;
+
+ TRACE_DEVEL("change server weight", CHK_EV_TCPCHK_EXP, check);
+ msg = server_parse_weight_change_request(check->server, ps);
+ if (!wrn || !*wrn)
+ wrn = msg;
+ }
+
+ if (sc) {
+ const char *msg;
+
+ sc += strlen("maxconn:");
+
+ TRACE_DEVEL("change server maxconn", CHK_EV_TCPCHK_EXP, check);
+ /* This is safe to call server_parse_maxconn_change_request
+ * because the server lock is held during the check.
+ */
+ msg = server_parse_maxconn_change_request(check->server, sc);
+ if (!wrn || !*wrn)
+ wrn = msg;
+ }
+
+ /* and finally health status */
+ if (hs) {
+ /* We'll report some of the warnings and errors we have
+ * here. Down reports are critical, we leave them untouched.
+ * Lack of report, or report of 'UP' leaves the room for
+ * ERR first, then WARN.
+ */
+ const char *msg = cmd;
+ struct buffer *t;
+
+ if (!*msg || status == HCHK_STATUS_L7OKD) {
+ if (err && *err)
+ msg = err;
+ else if (wrn && *wrn)
+ msg = wrn;
+ }
+
+ t = get_trash_chunk();
+ chunk_printf(t, "via agent : %s%s%s%s",
+ hs, *msg ? " (" : "",
+ msg, *msg ? ")" : "");
+ TRACE_DEVEL("update server health status", CHK_EV_TCPCHK_EXP, check);
+ set_server_check_status(check, status, t->area);
+ }
+ else if (err && *err) {
+ /* No status change but we'd like to report something odd.
+ * Just report the current state and copy the message.
+ */
+ TRACE_DEVEL("agent reports an error", CHK_EV_TCPCHK_EXP, check);
+ chunk_printf(&trash, "agent reports an error : %s", err);
+ set_server_check_status(check, status/*check->status*/, trash.area);
+ }
+ else if (wrn && *wrn) {
+ /* No status change but we'd like to report something odd.
+ * Just report the current state and copy the message.
+ */
+ TRACE_DEVEL("agent reports a warning", CHK_EV_TCPCHK_EXP, check);
+ chunk_printf(&trash, "agent warns : %s", wrn);
+ set_server_check_status(check, status/*check->status*/, trash.area);
+ }
+ else {
+ TRACE_DEVEL("update server health status", CHK_EV_TCPCHK_EXP, check);
+ set_server_check_status(check, status, NULL);
+ }
+
+ out:
+ TRACE_LEAVE(CHK_EV_TCPCHK_EXP, check, 0, 0, (size_t[]){ret});
+ return ret;
+
+ wait_more_data:
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ ret = TCPCHK_EVAL_WAIT;
+ goto out;
+}
+
+/* Evaluates a TCPCHK_ACT_CONNECT rule. Returns TCPCHK_EVAL_WAIT to wait the
+ * connection establishment, TCPCHK_EVAL_CONTINUE to evaluate the next rule or
+ * TCPCHK_EVAL_STOP if an error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_eval_connect(struct check *check, struct tcpcheck_rule *rule)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ struct tcpcheck_connect *connect = &rule->connect;
+ struct proxy *proxy = check->proxy;
+ struct server *s = check->server;
+ struct task *t = check->task;
+ struct connection *conn = sc_conn(check->sc);
+ struct protocol *proto;
+ struct xprt_ops *xprt;
+ struct tcpcheck_rule *next;
+ int status, port;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_CONN, check);
+
+ next = get_next_tcpcheck_rule(check->tcpcheck_rules, rule);
+
+ /* current connection already created, check if it is established or not */
+ if (conn) {
+ if (conn->flags & CO_FL_WAIT_XPRT) {
+ /* We are still waiting for the connection establishment */
+ if (next && next->action == TCPCHK_ACT_SEND) {
+ if (!(check->sc->wait_event.events & SUB_RETRY_SEND))
+ conn->mux->subscribe(check->sc, SUB_RETRY_SEND, &check->sc->wait_event);
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("not connected yet", CHK_EV_TCPCHK_CONN, check);
+ }
+ else
+ ret = tcpcheck_eval_recv(check, rule);
+ }
+ goto out;
+ }
+
+ /* Note: here check->sc = sc = conn = NULL */
+
+ /* Always release input and output buffer when a new connect is evaluated */
+ check_release_buf(check, &check->bi);
+ check_release_buf(check, &check->bo);
+
+ /* No connection, prepare a new one */
+ conn = conn_new((s ? &s->obj_type : &proxy->obj_type));
+ if (!conn) {
+ chunk_printf(&trash, "TCPCHK error allocating connection at step %d",
+ tcpcheck_get_step_id(check, rule));
+ if (rule->comment)
+ chunk_appendf(&trash, " comment: '%s'", rule->comment);
+ set_server_check_status(check, HCHK_STATUS_SOCKERR, trash.area);
+ ret = TCPCHK_EVAL_STOP;
+ TRACE_ERROR("stconn allocation error", CHK_EV_TCPCHK_CONN|CHK_EV_TCPCHK_ERR, check);
+ goto out;
+ }
+ if (sc_attach_mux(check->sc, NULL, conn) < 0) {
+ TRACE_ERROR("mux attach error", CHK_EV_TCPCHK_CONN|CHK_EV_TCPCHK_ERR, check);
+ conn_free(conn);
+ conn = NULL;
+ status = SF_ERR_RESOURCE;
+ goto fail_check;
+ }
+ conn->ctx = check->sc;
+ conn_set_owner(conn, check->sess, NULL);
+
+ /* no client address */
+ if (!sockaddr_alloc(&conn->dst, NULL, 0)) {
+ TRACE_ERROR("sockaddr allocation error", CHK_EV_TCPCHK_CONN|CHK_EV_TCPCHK_ERR, check);
+ status = SF_ERR_RESOURCE;
+ goto fail_check;
+ }
+
+ /* connect to the connect rule addr if specified, otherwise the check
+ * addr if specified on the server. otherwise, use the server addr (it
+ * MUST exist at this step).
+ */
+ *conn->dst = (is_addr(&connect->addr)
+ ? connect->addr
+ : (is_addr(&check->addr) ? check->addr : s->addr));
+ proto = protocol_lookup(conn->dst->ss_family, PROTO_TYPE_STREAM, 0);
+
+ port = 0;
+ if (connect->port)
+ port = connect->port;
+ if (!port && connect->port_expr) {
+ struct sample *smp;
+
+ smp = sample_fetch_as_type(check->proxy, check->sess, NULL,
+ SMP_OPT_DIR_REQ | SMP_OPT_FINAL,
+ connect->port_expr, SMP_T_SINT);
+ if (smp)
+ port = smp->data.u.sint;
+ }
+ if (!port && is_inet_addr(&connect->addr))
+ port = get_host_port(&connect->addr);
+ if (!port && check->port)
+ port = check->port;
+ if (!port && is_inet_addr(&check->addr))
+ port = get_host_port(&check->addr);
+ if (!port) {
+ /* The server MUST exist here */
+ port = s->svc_port;
+ }
+ set_host_port(conn->dst, port);
+ TRACE_DEVEL("set port", CHK_EV_TCPCHK_CONN, check, 0, 0, (size_t[]){port});
+
+ xprt = ((connect->options & TCPCHK_OPT_SSL)
+ ? xprt_get(XPRT_SSL)
+ : ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) ? check->xprt : xprt_get(XPRT_RAW)));
+
+ if (conn_prepare(conn, proto, xprt) < 0) {
+ TRACE_ERROR("xprt allocation error", CHK_EV_TCPCHK_CONN|CHK_EV_TCPCHK_ERR, check);
+ status = SF_ERR_RESOURCE;
+ goto fail_check;
+ }
+
+ if ((connect->options & TCPCHK_OPT_SOCKS4) && s && (s->flags & SRV_F_SOCKS4_PROXY)) {
+ conn->send_proxy_ofs = 1;
+ conn->flags |= CO_FL_SOCKS4;
+ TRACE_DEVEL("configure SOCKS4 proxy", CHK_EV_TCPCHK_CONN);
+ }
+ else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.via_socks4 && (s->flags & SRV_F_SOCKS4_PROXY)) {
+ conn->send_proxy_ofs = 1;
+ conn->flags |= CO_FL_SOCKS4;
+ TRACE_DEVEL("configure SOCKS4 proxy", CHK_EV_TCPCHK_CONN);
+ }
+
+ if (connect->options & TCPCHK_OPT_SEND_PROXY) {
+ conn->send_proxy_ofs = 1;
+ conn->flags |= CO_FL_SEND_PROXY;
+ TRACE_DEVEL("configure PROXY protocol", CHK_EV_TCPCHK_CONN, check);
+ }
+ else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.send_proxy && !(check->state & CHK_ST_AGENT)) {
+ conn->send_proxy_ofs = 1;
+ conn->flags |= CO_FL_SEND_PROXY;
+ TRACE_DEVEL("configure PROXY protocol", CHK_EV_TCPCHK_CONN, check);
+ }
+
+ status = SF_ERR_INTERNAL;
+ if (proto && proto->connect) {
+ int flags = 0;
+
+ if (!next)
+ flags |= CONNECT_DELACK_ALWAYS;
+ if (connect->options & TCPCHK_OPT_HAS_DATA)
+ flags |= (CONNECT_HAS_DATA|CONNECT_DELACK_ALWAYS);
+ status = proto->connect(conn, flags);
+ }
+
+ if (status != SF_ERR_NONE)
+ goto fail_check;
+
+ conn_set_private(conn);
+ conn->ctx = check->sc;
+
+#ifdef USE_OPENSSL
+ if (connect->sni)
+ ssl_sock_set_servername(conn, connect->sni);
+ else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.sni)
+ ssl_sock_set_servername(conn, s->check.sni);
+
+ if (connect->alpn)
+ ssl_sock_set_alpn(conn, (unsigned char *)connect->alpn, connect->alpn_len);
+ else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && s && s->check.alpn_str)
+ ssl_sock_set_alpn(conn, (unsigned char *)s->check.alpn_str, s->check.alpn_len);
+#endif
+
+ if (conn_ctrl_ready(conn) && (connect->options & TCPCHK_OPT_LINGER) && !(conn->flags & CO_FL_FDLESS)) {
+ /* Some servers don't like reset on close */
+ HA_ATOMIC_AND(&fdtab[conn->handle.fd].state, ~FD_LINGER_RISK);
+ }
+
+ if (conn_ctrl_ready(conn) && (conn->flags & (CO_FL_SEND_PROXY | CO_FL_SOCKS4))) {
+ if (xprt_add_hs(conn) < 0)
+ status = SF_ERR_RESOURCE;
+ }
+
+ if (conn_xprt_start(conn) < 0) {
+ status = SF_ERR_RESOURCE;
+ goto fail_check;
+ }
+
+ /* The mux may be initialized now if there isn't server attached to the
+ * check (email alerts) or if there is a mux proto specified or if there
+ * is no alpn.
+ */
+ if (!s || ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && check->mux_proto) ||
+ connect->mux_proto || (!connect->alpn && !check->alpn_str)) {
+ const struct mux_ops *mux_ops;
+
+ TRACE_DEVEL("try to install mux now", CHK_EV_TCPCHK_CONN, check);
+ if (connect->mux_proto)
+ mux_ops = connect->mux_proto->mux;
+ else if ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && check->mux_proto)
+ mux_ops = check->mux_proto->mux;
+ else {
+ int mode = ((check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK
+ ? PROTO_MODE_HTTP
+ : PROTO_MODE_TCP);
+
+ mux_ops = conn_get_best_mux(conn, IST_NULL, PROTO_SIDE_BE, mode);
+ }
+ if (mux_ops && conn_install_mux(conn, mux_ops, check->sc, proxy, check->sess) < 0) {
+ TRACE_ERROR("failed to install mux", CHK_EV_TCPCHK_CONN|CHK_EV_TCPCHK_ERR, check);
+ status = SF_ERR_INTERNAL;
+ goto fail_check;
+ }
+ }
+
+ fail_check:
+ /* It can return one of :
+ * - SF_ERR_NONE if everything's OK
+ * - SF_ERR_SRVTO if there are no more servers
+ * - SF_ERR_SRVCL if the connection was refused by the server
+ * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn)
+ * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...)
+ * - SF_ERR_INTERNAL for any other purely internal errors
+ * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted.
+ * Note that we try to prevent the network stack from sending the ACK during the
+ * connect() when a pure TCP check is used (without PROXY protocol).
+ */
+ switch (status) {
+ case SF_ERR_NONE:
+ /* we allow up to min(inter, timeout.connect) for a connection
+ * to establish but only when timeout.check is set as it may be
+ * to short for a full check otherwise
+ */
+ t->expire = tick_add(now_ms, MS_TO_TICKS(check->inter));
+
+ if (proxy->timeout.check && proxy->timeout.connect) {
+ int t_con = tick_add(now_ms, proxy->timeout.connect);
+ t->expire = tick_first(t->expire, t_con);
+ }
+ break;
+ case SF_ERR_SRVTO: /* ETIMEDOUT */
+ case SF_ERR_SRVCL: /* ECONNREFUSED, ENETUNREACH, ... */
+ case SF_ERR_PRXCOND:
+ case SF_ERR_RESOURCE:
+ case SF_ERR_INTERNAL:
+ TRACE_ERROR("report connection error", CHK_EV_TCPCHK_CONN|CHK_EV_TCPCHK_ERR, check, 0, 0, (size_t[]){status});
+ chk_report_conn_err(check, errno, 0);
+ ret = TCPCHK_EVAL_STOP;
+ goto out;
+ }
+
+ /* don't do anything until the connection is established */
+ if (conn->flags & CO_FL_WAIT_XPRT) {
+ if (conn->mux) {
+ if (next && next->action == TCPCHK_ACT_SEND)
+ conn->mux->subscribe(check->sc, SUB_RETRY_SEND, &check->sc->wait_event);
+ else
+ conn->mux->subscribe(check->sc, SUB_RETRY_RECV, &check->sc->wait_event);
+ }
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("not connected yet", CHK_EV_TCPCHK_CONN, check);
+ goto out;
+ }
+
+ out:
+ if (conn && check->result == CHK_RES_FAILED) {
+ conn->flags |= CO_FL_ERROR;
+ TRACE_ERROR("connect failed, report connection error", CHK_EV_TCPCHK_CONN|CHK_EV_TCPCHK_ERR, check);
+ }
+
+ if (ret == TCPCHK_EVAL_CONTINUE && check->proxy->timeout.check)
+ check->task->expire = tick_add_ifset(now_ms, check->proxy->timeout.check);
+
+ TRACE_LEAVE(CHK_EV_TCPCHK_CONN, check, 0, 0, (size_t[]){ret});
+ return ret;
+}
+
+/* Evaluates a TCPCHK_ACT_SEND rule. Returns TCPCHK_EVAL_WAIT if outgoing data
+ * were not fully sent, TCPCHK_EVAL_CONTINUE to evaluate the next rule or
+ * TCPCHK_EVAL_STOP if an error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_eval_send(struct check *check, struct tcpcheck_rule *rule)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ struct tcpcheck_send *send = &rule->send;
+ struct stconn *sc = check->sc;
+ struct connection *conn = __sc_conn(sc);
+ struct buffer *tmp = NULL;
+ struct htx *htx = NULL;
+ int connection_hdr = 0;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA, check);
+
+ if (check->state & CHK_ST_OUT_ALLOC) {
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_STATE("waiting for output buffer allocation", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA|CHK_EV_TX_BLK, check);
+ goto out;
+ }
+
+ if (!check_get_buf(check, &check->bo)) {
+ check->state |= CHK_ST_OUT_ALLOC;
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_STATE("waiting for output buffer allocation", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA|CHK_EV_TX_BLK, check);
+ goto out;
+ }
+
+ /* Data already pending in the output buffer, send them now */
+ if ((IS_HTX_CONN(conn) && !htx_is_empty(htxbuf(&check->bo))) || (!IS_HTX_CONN(conn) && b_data(&check->bo))) {
+ TRACE_DEVEL("Data still pending, try to send it now", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA, check);
+ goto do_send;
+ }
+
+ /* Always release input buffer when a new send is evaluated */
+ check_release_buf(check, &check->bi);
+
+ switch (send->type) {
+ case TCPCHK_SEND_STRING:
+ case TCPCHK_SEND_BINARY:
+ if (istlen(send->data) >= b_size(&check->bo)) {
+ chunk_printf(&trash, "tcp-check send : string too large (%u) for buffer size (%u) at step %d",
+ (unsigned int)istlen(send->data), (unsigned int)b_size(&check->bo),
+ tcpcheck_get_step_id(check, rule));
+ set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area);
+ ret = TCPCHK_EVAL_STOP;
+ goto out;
+ }
+ b_putist(&check->bo, send->data);
+ break;
+ case TCPCHK_SEND_STRING_LF:
+ check->bo.data = sess_build_logline(check->sess, NULL, b_orig(&check->bo), b_size(&check->bo), &rule->send.fmt);
+ if (!b_data(&check->bo))
+ goto out;
+ break;
+ case TCPCHK_SEND_BINARY_LF: {
+ int len = b_size(&check->bo);
+
+ tmp = alloc_trash_chunk();
+ if (!tmp)
+ goto error_lf;
+ tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &rule->send.fmt);
+ if (!b_data(tmp))
+ goto out;
+ tmp->area[tmp->data] = '\0';
+ if (parse_binary(b_orig(tmp), &check->bo.area, &len, NULL) == 0)
+ goto error_lf;
+ check->bo.data = len;
+ break;
+ }
+ case TCPCHK_SEND_HTTP: {
+ struct htx_sl *sl;
+ struct ist meth, uri, vsn, clen, body;
+ unsigned int slflags = 0;
+
+ tmp = alloc_trash_chunk();
+ if (!tmp)
+ goto error_htx;
+
+ meth = ((send->http.meth.meth == HTTP_METH_OTHER)
+ ? ist2(send->http.meth.str.area, send->http.meth.str.data)
+ : http_known_methods[send->http.meth.meth]);
+ if (send->http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) {
+ tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &send->http.uri_fmt);
+ uri = (b_data(tmp) ? ist2(b_orig(tmp), b_data(tmp)) : ist("/"));
+ }
+ else
+ uri = (isttest(send->http.uri) ? send->http.uri : ist("/"));
+ vsn = (isttest(send->http.vsn) ? send->http.vsn : ist("HTTP/1.0"));
+
+ if ((istlen(vsn) == 6 && *(vsn.ptr+5) == '2') ||
+ (istlen(vsn) == 8 && (*(vsn.ptr+5) > '1' || (*(vsn.ptr+5) == '1' && *(vsn.ptr+7) >= '1'))))
+ slflags |= HTX_SL_F_VER_11;
+ slflags |= (HTX_SL_F_XFER_LEN|HTX_SL_F_CLEN);
+ if (!(send->http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) && !isttest(send->http.body))
+ slflags |= HTX_SL_F_BODYLESS;
+
+ htx = htx_from_buf(&check->bo);
+ sl = htx_add_stline(htx, HTX_BLK_REQ_SL, slflags, meth, uri, vsn);
+ if (!sl)
+ goto error_htx;
+ sl->info.req.meth = send->http.meth.meth;
+ if (!http_update_host(htx, sl, uri))
+ goto error_htx;
+
+ if (!LIST_ISEMPTY(&send->http.hdrs)) {
+ struct tcpcheck_http_hdr *hdr;
+ struct ist hdr_value;
+
+ list_for_each_entry(hdr, &send->http.hdrs, list) {
+ chunk_reset(tmp);
+ tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &hdr->value);
+ if (!b_data(tmp))
+ continue;
+ hdr_value = ist2(b_orig(tmp), b_data(tmp));
+ if (!htx_add_header(htx, hdr->name, hdr_value))
+ goto error_htx;
+ if ((sl->flags & HTX_SL_F_HAS_AUTHORITY) && isteqi(hdr->name, ist("host"))) {
+ if (!http_update_authority(htx, sl, hdr_value))
+ goto error_htx;
+ }
+ if (isteqi(hdr->name, ist("connection")))
+ connection_hdr = 1;
+ }
+
+ }
+ if (check->proxy->options2 & PR_O2_CHK_SNDST) {
+ chunk_reset(tmp);
+ httpchk_build_status_header(check->server, tmp);
+ if (!htx_add_header(htx, ist("X-Haproxy-Server-State"), ist2(b_orig(tmp), b_data(tmp))))
+ goto error_htx;
+ }
+
+
+ if (send->http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) {
+ chunk_reset(tmp);
+ tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &send->http.body_fmt);
+ body = ist2(b_orig(tmp), b_data(tmp));
+ }
+ else
+ body = send->http.body;
+
+ if (!connection_hdr && !htx_add_header(htx, ist("Connection"), ist("close")))
+ goto error_htx;
+
+ if ((send->http.meth.meth != HTTP_METH_OPTIONS &&
+ send->http.meth.meth != HTTP_METH_GET &&
+ send->http.meth.meth != HTTP_METH_HEAD &&
+ send->http.meth.meth != HTTP_METH_DELETE) || istlen(body)) {
+ clen = ist((!istlen(body) ? "0" : ultoa(istlen(body))));
+ if (!htx_add_header(htx, ist("Content-length"), clen))
+ goto error_htx;
+ }
+
+ if (!htx_add_endof(htx, HTX_BLK_EOH) ||
+ (istlen(body) && !htx_add_data_atonce(htx, body)))
+ goto error_htx;
+
+ /* no more data are expected */
+ htx->flags |= HTX_FL_EOM;
+ htx_to_buf(htx, &check->bo);
+ break;
+ }
+ case TCPCHK_SEND_UNDEF:
+ /* Should never happen. */
+ ret = TCPCHK_EVAL_STOP;
+ goto out;
+ };
+
+ do_send:
+ TRACE_DATA("send data", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA, check);
+ if (conn->mux->snd_buf(sc, &check->bo,
+ (IS_HTX_CONN(conn) ? (htxbuf(&check->bo))->data: b_data(&check->bo)), 0) <= 0) {
+ if ((conn->flags & CO_FL_ERROR) || sc_ep_test(sc, SE_FL_ERROR)) {
+ ret = TCPCHK_EVAL_STOP;
+ TRACE_DEVEL("connection error during send", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA|CHK_EV_TX_ERR, check);
+ goto out;
+ }
+ }
+ if ((IS_HTX_CONN(conn) && !htx_is_empty(htxbuf(&check->bo))) || (!IS_HTX_CONN(conn) && b_data(&check->bo))) {
+ conn->mux->subscribe(sc, SUB_RETRY_SEND, &sc->wait_event);
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("data not fully sent, wait", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA, check);
+ goto out;
+ }
+
+ out:
+ free_trash_chunk(tmp);
+ if (!b_data(&check->bo) || ret == TCPCHK_EVAL_STOP)
+ check_release_buf(check, &check->bo);
+
+ TRACE_LEAVE(CHK_EV_TCPCHK_SND, check, 0, 0, (size_t[]){ret});
+ return ret;
+
+ error_htx:
+ if (htx) {
+ htx_reset(htx);
+ htx_to_buf(htx, &check->bo);
+ }
+ chunk_printf(&trash, "tcp-check send : failed to build HTTP request at step %d",
+ tcpcheck_get_step_id(check, rule));
+ TRACE_ERROR("failed to build HTTP request", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA|CHK_EV_TCPCHK_ERR, check);
+ set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area);
+ ret = TCPCHK_EVAL_STOP;
+ goto out;
+
+ error_lf:
+ chunk_printf(&trash, "tcp-check send : failed to build log-format string at step %d",
+ tcpcheck_get_step_id(check, rule));
+ TRACE_ERROR("failed to build log-format string", CHK_EV_TCPCHK_SND|CHK_EV_TX_DATA|CHK_EV_TCPCHK_ERR, check);
+ set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area);
+ ret = TCPCHK_EVAL_STOP;
+ goto out;
+
+}
+
+/* Try to receive data before evaluating a tcp-check expect rule. Returns
+ * TCPCHK_EVAL_WAIT if it is already subscribed on receive events or if nothing
+ * was received, TCPCHK_EVAL_CONTINUE to evaluate the expect rule or
+ * TCPCHK_EVAL_STOP if an error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_eval_recv(struct check *check, struct tcpcheck_rule *rule)
+{
+ struct stconn *sc = check->sc;
+ struct connection *conn = __sc_conn(sc);
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ size_t max, read, cur_read = 0;
+ int is_empty;
+ int read_poll = MAX_READ_POLL_LOOPS;
+
+ TRACE_ENTER(CHK_EV_RX_DATA, check);
+
+ if (sc->wait_event.events & SUB_RETRY_RECV) {
+ TRACE_DEVEL("waiting for response", CHK_EV_RX_DATA, check);
+ goto wait_more_data;
+ }
+
+ if (sc_ep_test(sc, SE_FL_EOS))
+ goto end_recv;
+
+ if (check->state & CHK_ST_IN_ALLOC) {
+ TRACE_STATE("waiting for input buffer allocation", CHK_EV_RX_DATA|CHK_EV_RX_BLK, check);
+ goto wait_more_data;
+ }
+
+ if (!check_get_buf(check, &check->bi)) {
+ check->state |= CHK_ST_IN_ALLOC;
+ TRACE_STATE("waiting for input buffer allocation", CHK_EV_RX_DATA|CHK_EV_RX_BLK, check);
+ goto wait_more_data;
+ }
+
+ /* errors on the connection and the stream connector were already checked */
+
+ /* prepare to detect if the mux needs more room */
+ sc_ep_clr(sc, SE_FL_WANT_ROOM);
+
+ while (sc_ep_test(sc, SE_FL_RCV_MORE) ||
+ (!(conn->flags & CO_FL_ERROR) && !sc_ep_test(sc, SE_FL_ERROR | SE_FL_EOS))) {
+ max = (IS_HTX_SC(sc) ? htx_free_space(htxbuf(&check->bi)) : b_room(&check->bi));
+ read = conn->mux->rcv_buf(sc, &check->bi, max, 0);
+ cur_read += read;
+ if (!read ||
+ sc_ep_test(sc, SE_FL_WANT_ROOM) ||
+ (--read_poll <= 0) ||
+ (read < max && read >= global.tune.recv_enough))
+ break;
+ }
+
+ end_recv:
+ is_empty = (IS_HTX_SC(sc) ? htx_is_empty(htxbuf(&check->bi)) : !b_data(&check->bi));
+ if (is_empty && ((conn->flags & CO_FL_ERROR) || sc_ep_test(sc, SE_FL_ERROR))) {
+ /* Report network errors only if we got no other data. Otherwise
+ * we'll let the upper layers decide whether the response is OK
+ * or not. It is very common that an RST sent by the server is
+ * reported as an error just after the last data chunk.
+ */
+ TRACE_ERROR("connection error during recv", CHK_EV_RX_DATA|CHK_EV_RX_ERR, check);
+ goto stop;
+ }
+ if (!cur_read) {
+ if (sc_ep_test(sc, SE_FL_EOI)) {
+ /* If EOI is set, it means there is a response or an error */
+ goto out;
+ }
+
+ if (!sc_ep_test(sc, SE_FL_WANT_ROOM | SE_FL_ERROR | SE_FL_EOS)) {
+ conn->mux->subscribe(sc, SUB_RETRY_RECV, &sc->wait_event);
+ TRACE_DEVEL("waiting for response", CHK_EV_RX_DATA, check);
+ goto wait_more_data;
+ }
+
+ if (is_empty) {
+ int status;
+
+ chunk_printf(&trash, "TCPCHK got an empty response at step %d",
+ tcpcheck_get_step_id(check, rule));
+ if (rule->comment)
+ chunk_appendf(&trash, " comment: '%s'", rule->comment);
+
+ TRACE_ERROR("empty response", CHK_EV_RX_DATA|CHK_EV_RX_ERR, check);
+ status = ((rule->expect.err_status != HCHK_STATUS_UNKNOWN) ? rule->expect.err_status : HCHK_STATUS_L7RSP);
+ set_server_check_status(check, status, trash.area);
+ goto stop;
+ }
+ }
+ TRACE_DATA("data received", CHK_EV_RX_DATA, check, 0, 0, (size_t[]){cur_read});
+
+ out:
+ if (!b_data(&check->bi) || ret == TCPCHK_EVAL_STOP)
+ check_release_buf(check, &check->bi);
+
+ TRACE_LEAVE(CHK_EV_RX_DATA, check, 0, 0, (size_t[]){ret});
+ return ret;
+
+ stop:
+ ret = TCPCHK_EVAL_STOP;
+ goto out;
+
+ wait_more_data:
+ ret = TCPCHK_EVAL_WAIT;
+ goto out;
+}
+
+/* Evaluates an HTTP TCPCHK_ACT_EXPECT rule. If <last_read> is set , no more data
+ * are expected. Returns TCPCHK_EVAL_WAIT to wait for more data,
+ * TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP if an
+ * error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_eval_expect_http(struct check *check, struct tcpcheck_rule *rule, int last_read)
+{
+ struct htx *htx = htxbuf(&check->bi);
+ struct htx_sl *sl;
+ struct htx_blk *blk;
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ struct tcpcheck_expect *expect = &rule->expect;
+ struct buffer *msg = NULL, *tmp = NULL, *nbuf = NULL, *vbuf = NULL;
+ enum healthcheck_status status = HCHK_STATUS_L7RSP;
+ struct ist desc = IST_NULL;
+ int i, match, inverse;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_EXP, check);
+
+ last_read |= (!htx_free_data_space(htx) || (htx->flags & HTX_FL_EOM));
+
+ if (htx->flags & HTX_FL_PARSING_ERROR) {
+ TRACE_ERROR("invalid response", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ status = HCHK_STATUS_L7RSP;
+ goto error;
+ }
+
+ if (htx_is_empty(htx)) {
+ if (last_read) {
+ TRACE_ERROR("empty response received", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ status = HCHK_STATUS_L7RSP;
+ goto error;
+ }
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ goto wait_more_data;
+ }
+
+ sl = http_get_stline(htx);
+ check->code = sl->info.res.status;
+
+ if (check->server &&
+ (check->server->proxy->options & PR_O_DISABLE404) &&
+ (check->server->next_state != SRV_ST_STOPPED) &&
+ (check->code == 404)) {
+ /* 404 may be accepted as "stopping" only if the server was up */
+ TRACE_STATE("404 response & disable-404", CHK_EV_TCPCHK_EXP, check);
+ goto out;
+ }
+
+ inverse = !!(expect->flags & TCPCHK_EXPT_FL_INV);
+ /* Make GCC happy ; initialize match to a failure state. */
+ match = inverse;
+ status = expect->err_status;
+
+ switch (expect->type) {
+ case TCPCHK_EXPECT_HTTP_STATUS:
+ match = 0;
+ for (i = 0; i < expect->codes.num; i++) {
+ if (sl->info.res.status >= expect->codes.codes[i][0] &&
+ sl->info.res.status <= expect->codes.codes[i][1]) {
+ match = 1;
+ break;
+ }
+ }
+
+ /* Set status and description in case of error */
+ status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7STS);
+ if (LIST_ISEMPTY(&expect->onerror_fmt))
+ desc = htx_sl_res_reason(sl);
+ break;
+ case TCPCHK_EXPECT_HTTP_STATUS_REGEX:
+ match = regex_exec2(expect->regex, HTX_SL_RES_CPTR(sl), HTX_SL_RES_CLEN(sl));
+
+ /* Set status and description in case of error */
+ status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7STS);
+ if (LIST_ISEMPTY(&expect->onerror_fmt))
+ desc = htx_sl_res_reason(sl);
+ break;
+
+ case TCPCHK_EXPECT_HTTP_HEADER: {
+ struct http_hdr_ctx ctx;
+ struct ist npat, vpat, value;
+ int full = (expect->flags & (TCPCHK_EXPT_FL_HTTP_HVAL_NONE|TCPCHK_EXPT_FL_HTTP_HVAL_FULL));
+
+ if (expect->flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT) {
+ nbuf = alloc_trash_chunk();
+ if (!nbuf) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Failed to allocate buffer to eval log-format string");
+ TRACE_ERROR("buffer allocation failure", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ nbuf->data = sess_build_logline(check->sess, NULL, b_orig(nbuf), b_size(nbuf), &expect->hdr.name_fmt);
+ if (!b_data(nbuf)) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("log-format string evaluated to an empty string");
+ TRACE_ERROR("invalid log-format string (hdr name)", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ npat = ist2(b_orig(nbuf), b_data(nbuf));
+ }
+ else if (!(expect->flags & TCPCHK_EXPT_FL_HTTP_HNAME_REG))
+ npat = expect->hdr.name;
+
+ if (expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT) {
+ vbuf = alloc_trash_chunk();
+ if (!vbuf) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Failed to allocate buffer to eval log-format string");
+ TRACE_ERROR("buffer allocation failure", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ vbuf->data = sess_build_logline(check->sess, NULL, b_orig(vbuf), b_size(vbuf), &expect->hdr.value_fmt);
+ if (!b_data(vbuf)) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("log-format string evaluated to an empty string");
+ TRACE_ERROR("invalid log-format string (hdr value)", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ vpat = ist2(b_orig(vbuf), b_data(vbuf));
+ }
+ else if (!(expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_REG))
+ vpat = expect->hdr.value;
+
+ match = 0;
+ ctx.blk = NULL;
+ while (1) {
+ switch (expect->flags & TCPCHK_EXPT_FL_HTTP_HNAME_TYPE) {
+ case TCPCHK_EXPT_FL_HTTP_HNAME_STR:
+ if (!http_find_str_header(htx, npat, &ctx, full))
+ goto end_of_match;
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HNAME_BEG:
+ if (!http_find_pfx_header(htx, npat, &ctx, full))
+ goto end_of_match;
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HNAME_END:
+ if (!http_find_sfx_header(htx, npat, &ctx, full))
+ goto end_of_match;
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HNAME_SUB:
+ if (!http_find_sub_header(htx, npat, &ctx, full))
+ goto end_of_match;
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HNAME_REG:
+ if (!http_match_header(htx, expect->hdr.name_re, &ctx, full))
+ goto end_of_match;
+ break;
+ default:
+ /* should never happen */
+ goto end_of_match;
+ }
+
+ /* A header has matched the name pattern, let's test its
+ * value now (always defined from there). If there is no
+ * value pattern, it is a good match.
+ */
+
+ if (expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_NONE) {
+ match = 1;
+ goto end_of_match;
+ }
+
+ value = ctx.value;
+ switch (expect->flags & TCPCHK_EXPT_FL_HTTP_HVAL_TYPE) {
+ case TCPCHK_EXPT_FL_HTTP_HVAL_STR:
+ if (isteq(value, vpat)) {
+ match = 1;
+ goto end_of_match;
+ }
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HVAL_BEG:
+ if (istlen(value) < istlen(vpat))
+ break;
+ value = ist2(istptr(value), istlen(vpat));
+ if (isteq(value, vpat)) {
+ match = 1;
+ goto end_of_match;
+ }
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HVAL_END:
+ if (istlen(value) < istlen(vpat))
+ break;
+ value = ist2(istend(value) - istlen(vpat), istlen(vpat));
+ if (isteq(value, vpat)) {
+ match = 1;
+ goto end_of_match;
+ }
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HVAL_SUB:
+ if (isttest(istist(value, vpat))) {
+ match = 1;
+ goto end_of_match;
+ }
+ break;
+ case TCPCHK_EXPT_FL_HTTP_HVAL_REG:
+ if (regex_exec2(expect->hdr.value_re, istptr(value), istlen(value))) {
+ match = 1;
+ goto end_of_match;
+ }
+ break;
+ }
+ }
+
+ end_of_match:
+ status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7STS);
+ if (LIST_ISEMPTY(&expect->onerror_fmt))
+ desc = htx_sl_res_reason(sl);
+ break;
+ }
+
+ case TCPCHK_EXPECT_HTTP_BODY:
+ case TCPCHK_EXPECT_HTTP_BODY_REGEX:
+ case TCPCHK_EXPECT_HTTP_BODY_LF:
+ match = 0;
+ chunk_reset(&trash);
+ for (blk = htx_get_head_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) {
+ enum htx_blk_type type = htx_get_blk_type(blk);
+
+ if (type == HTX_BLK_TLR || type == HTX_BLK_EOT)
+ break;
+ if (type == HTX_BLK_DATA) {
+ if (!chunk_istcat(&trash, htx_get_blk_value(htx, blk)))
+ break;
+ }
+ }
+
+ if (!b_data(&trash)) {
+ if (!last_read) {
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ goto wait_more_data;
+ }
+ status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7RSP);
+ if (LIST_ISEMPTY(&expect->onerror_fmt))
+ desc = ist("HTTP content check could not find a response body");
+ TRACE_ERROR("no response boduy found while expected", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+
+ if (expect->type == TCPCHK_EXPECT_HTTP_BODY_LF) {
+ tmp = alloc_trash_chunk();
+ if (!tmp) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Failed to allocate buffer to eval log-format string");
+ TRACE_ERROR("buffer allocation failure", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &expect->fmt);
+ if (!b_data(tmp)) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("log-format string evaluated to an empty string");
+ TRACE_ERROR("invalid log-format string", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ }
+
+ if (!last_read &&
+ ((expect->type == TCPCHK_EXPECT_HTTP_BODY && b_data(&trash) < istlen(expect->data)) ||
+ ((expect->type == TCPCHK_EXPECT_HTTP_BODY_LF && b_data(&trash) < b_data(tmp))) ||
+ (expect->min_recv > 0 && b_data(&trash) < expect->min_recv))) {
+ ret = TCPCHK_EVAL_WAIT;
+ goto out;
+ }
+
+ if (expect->type ==TCPCHK_EXPECT_HTTP_BODY)
+ match = my_memmem(b_orig(&trash), b_data(&trash), istptr(expect->data), istlen(expect->data)) != NULL;
+ else if (expect->type ==TCPCHK_EXPECT_HTTP_BODY_LF)
+ match = my_memmem(b_orig(&trash), b_data(&trash), b_orig(tmp), b_data(tmp)) != NULL;
+ else
+ match = regex_exec2(expect->regex, b_orig(&trash), b_data(&trash));
+
+ /* Wait for more data on mismatch only if no minimum is defined (-1),
+ * otherwise the absence of match is already conclusive.
+ */
+ if (!match && !last_read && (expect->min_recv == -1)) {
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ goto out;
+ }
+
+ /* Set status and description in case of error */
+ status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7RSP);
+ if (LIST_ISEMPTY(&expect->onerror_fmt))
+ desc = (inverse
+ ? ist("HTTP check matched unwanted content")
+ : ist("HTTP content check did not match"));
+ break;
+
+
+ default:
+ /* should never happen */
+ status = ((status != HCHK_STATUS_UNKNOWN) ? status : HCHK_STATUS_L7RSP);
+ goto error;
+ }
+
+ if (!(match ^ inverse)) {
+ TRACE_STATE("expect rule failed", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+
+ TRACE_STATE("expect rule succeeded", CHK_EV_TCPCHK_EXP, check);
+
+ out:
+ free_trash_chunk(tmp);
+ free_trash_chunk(nbuf);
+ free_trash_chunk(vbuf);
+ free_trash_chunk(msg);
+ TRACE_LEAVE(CHK_EV_TCPCHK_EXP, check, 0, 0, (size_t[]){ret});
+ return ret;
+
+ error:
+ TRACE_STATE("expect rule failed", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ ret = TCPCHK_EVAL_STOP;
+ msg = alloc_trash_chunk();
+ if (msg)
+ tcpcheck_expect_onerror_message(msg, check, rule, 0, desc);
+ set_server_check_status(check, status, (msg ? b_head(msg) : NULL));
+ goto out;
+
+ wait_more_data:
+ ret = TCPCHK_EVAL_WAIT;
+ goto out;
+}
+
+/* Evaluates a TCP TCPCHK_ACT_EXPECT rule. Returns TCPCHK_EVAL_WAIT to wait for
+ * more data, TCPCHK_EVAL_CONTINUE to evaluate the next rule or TCPCHK_EVAL_STOP
+ * if an error occurred.
+ */
+enum tcpcheck_eval_ret tcpcheck_eval_expect(struct check *check, struct tcpcheck_rule *rule, int last_read)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ struct tcpcheck_expect *expect = &rule->expect;
+ struct buffer *msg = NULL, *tmp = NULL;
+ struct ist desc = IST_NULL;
+ enum healthcheck_status status;
+ int match, inverse;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_EXP, check);
+
+ last_read |= b_full(&check->bi);
+
+ /* The current expect might need more data than the previous one, check again
+ * that the minimum amount data required to match is respected.
+ */
+ if (!last_read) {
+ if ((expect->type == TCPCHK_EXPECT_STRING || expect->type == TCPCHK_EXPECT_BINARY) &&
+ (b_data(&check->bi) < istlen(expect->data))) {
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ goto out;
+ }
+ if (expect->min_recv > 0 && (b_data(&check->bi) < expect->min_recv)) {
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ goto out;
+ }
+ }
+
+ inverse = !!(expect->flags & TCPCHK_EXPT_FL_INV);
+ /* Make GCC happy ; initialize match to a failure state. */
+ match = inverse;
+ status = ((expect->err_status != HCHK_STATUS_UNKNOWN) ? expect->err_status : HCHK_STATUS_L7RSP);
+
+ switch (expect->type) {
+ case TCPCHK_EXPECT_STRING:
+ case TCPCHK_EXPECT_BINARY:
+ match = my_memmem(b_head(&check->bi), b_data(&check->bi), istptr(expect->data), istlen(expect->data)) != NULL;
+ break;
+ case TCPCHK_EXPECT_STRING_REGEX:
+ match = regex_exec2(expect->regex, b_head(&check->bi), MIN(b_data(&check->bi), b_size(&check->bi)-1));
+ break;
+
+ case TCPCHK_EXPECT_BINARY_REGEX:
+ chunk_reset(&trash);
+ dump_binary(&trash, b_head(&check->bi), b_data(&check->bi));
+ match = regex_exec2(expect->regex, b_head(&trash), MIN(b_data(&trash), b_size(&trash)-1));
+ break;
+
+ case TCPCHK_EXPECT_STRING_LF:
+ case TCPCHK_EXPECT_BINARY_LF:
+ match = 0;
+ tmp = alloc_trash_chunk();
+ if (!tmp) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Failed to allocate buffer to eval format string");
+ TRACE_ERROR("buffer allocation failure", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ tmp->data = sess_build_logline(check->sess, NULL, b_orig(tmp), b_size(tmp), &expect->fmt);
+ if (!b_data(tmp)) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("log-format string evaluated to an empty string");
+ TRACE_ERROR("invalid log-format string", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ if (expect->type == TCPCHK_EXPECT_BINARY_LF) {
+ int len = tmp->data;
+ if (parse_binary(b_orig(tmp), &tmp->area, &len, NULL) == 0) {
+ status = HCHK_STATUS_L7RSP;
+ desc = ist("Failed to parse hexastring resulting of eval of a log-format string");
+ TRACE_ERROR("invalid binary log-format string", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ goto error;
+ }
+ tmp->data = len;
+ }
+ if (b_data(&check->bi) < tmp->data) {
+ if (!last_read) {
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ goto out;
+ }
+ break;
+ }
+ match = my_memmem(b_head(&check->bi), b_data(&check->bi), b_orig(tmp), b_data(tmp)) != NULL;
+ break;
+
+ case TCPCHK_EXPECT_CUSTOM:
+ if (expect->custom)
+ ret = expect->custom(check, rule, last_read);
+ goto out;
+ default:
+ /* Should never happen. */
+ ret = TCPCHK_EVAL_STOP;
+ goto out;
+ }
+
+
+ /* Wait for more data on mismatch only if no minimum is defined (-1),
+ * otherwise the absence of match is already conclusive.
+ */
+ if (!match && !last_read && (expect->min_recv == -1)) {
+ ret = TCPCHK_EVAL_WAIT;
+ TRACE_DEVEL("waiting for more data", CHK_EV_TCPCHK_EXP, check);
+ goto out;
+ }
+
+ /* Result as expected, next rule. */
+ if (match ^ inverse) {
+ TRACE_STATE("expect rule succeeded", CHK_EV_TCPCHK_EXP, check);
+ goto out;
+ }
+
+ error:
+ /* From this point on, we matched something we did not want, this is an error state. */
+ TRACE_STATE("expect rule failed", CHK_EV_TCPCHK_EXP|CHK_EV_TCPCHK_ERR, check);
+ ret = TCPCHK_EVAL_STOP;
+ msg = alloc_trash_chunk();
+ if (msg)
+ tcpcheck_expect_onerror_message(msg, check, rule, match, desc);
+ set_server_check_status(check, status, (msg ? b_head(msg) : NULL));
+ free_trash_chunk(msg);
+
+ out:
+ free_trash_chunk(tmp);
+ TRACE_LEAVE(CHK_EV_TCPCHK_EXP, check, 0, 0, (size_t[]){ret});
+ return ret;
+}
+
+/* Evaluates a TCPCHK_ACT_ACTION_KW rule. Returns TCPCHK_EVAL_CONTINUE to
+ * evaluate the next rule or TCPCHK_EVAL_STOP if an error occurred. It never
+ * waits.
+ */
+enum tcpcheck_eval_ret tcpcheck_eval_action_kw(struct check *check, struct tcpcheck_rule *rule)
+{
+ enum tcpcheck_eval_ret ret = TCPCHK_EVAL_CONTINUE;
+ struct act_rule *act_rule;
+ enum act_return act_ret;
+
+ act_rule =rule->action_kw.rule;
+ act_ret = act_rule->action_ptr(act_rule, check->proxy, check->sess, NULL, 0);
+ if (act_ret != ACT_RET_CONT) {
+ chunk_printf(&trash, "TCPCHK ACTION unexpected result at step %d\n",
+ tcpcheck_get_step_id(check, rule));
+ set_server_check_status(check, HCHK_STATUS_L7RSP, trash.area);
+ ret = TCPCHK_EVAL_STOP;
+ }
+
+ return ret;
+}
+
+/* Executes a tcp-check ruleset. Note that this is called both from the
+ * connection's wake() callback and from the check scheduling task. It returns
+ * 0 on normal cases, or <0 if a close() has happened on an existing connection,
+ * presenting the risk of an fd replacement.
+ *
+ * Please do NOT place any return statement in this function and only leave
+ * via the out_end_tcpcheck label after setting retcode.
+ */
+int tcpcheck_main(struct check *check)
+{
+ struct tcpcheck_rule *rule;
+ struct stconn *sc = check->sc;
+ struct connection *conn = sc_conn(sc);
+ int must_read = 1, last_read = 0;
+ int retcode = 0;
+ enum tcpcheck_eval_ret eval_ret;
+
+ /* here, we know that the check is complete or that it failed */
+ if (check->result != CHK_RES_UNKNOWN)
+ goto out;
+
+ TRACE_ENTER(CHK_EV_TCPCHK_EVAL, check);
+
+ /* Note: the stream connector and the connection may only be undefined before
+ * the first rule evaluation (it is always a connect rule) or when the
+ * stream connector allocation failed on a connect rule, during sc allocation.
+ */
+
+ /* 1- check for connection error, if any */
+ if ((conn && conn->flags & CO_FL_ERROR) || sc_ep_test(sc, SE_FL_ERROR))
+ goto out_end_tcpcheck;
+
+ /* 2- check if a rule must be resume. It happens if check->current_step
+ * is defined. */
+ else if (check->current_step) {
+ rule = check->current_step;
+ TRACE_PROTO("resume rule evaluation", CHK_EV_TCPCHK_EVAL, check, 0, 0, (size_t[]){ tcpcheck_get_step_id(check, rule)});
+ }
+
+ /* 3- It is the first evaluation. We must create a session and preset
+ * tcp-check variables */
+ else {
+ struct tcpcheck_var *var;
+
+ /* First evaluation, create a session */
+ check->sess = session_new(&checks_fe, NULL, &check->obj_type);
+ if (!check->sess) {
+ chunk_printf(&trash, "TCPCHK error allocating check session");
+ TRACE_ERROR("session allocation failure", CHK_EV_TCPCHK_EVAL|CHK_EV_TCPCHK_ERR, check);
+ set_server_check_status(check, HCHK_STATUS_SOCKERR, trash.area);
+ goto out_end_tcpcheck;
+ }
+ vars_init_head(&check->vars, SCOPE_CHECK);
+ rule = LIST_NEXT(check->tcpcheck_rules->list, typeof(rule), list);
+
+ /* Preset tcp-check variables */
+ list_for_each_entry(var, &check->tcpcheck_rules->preset_vars, list) {
+ struct sample smp;
+
+ memset(&smp, 0, sizeof(smp));
+ smp_set_owner(&smp, check->proxy, check->sess, NULL, SMP_OPT_FINAL);
+ smp.data = var->data;
+ vars_set_by_name_ifexist(istptr(var->name), istlen(var->name), &smp);
+ }
+ TRACE_PROTO("start rules evaluation", CHK_EV_TCPCHK_EVAL, check);
+ }
+
+ /* Now evaluate the tcp-check rules */
+
+ list_for_each_entry_from(rule, check->tcpcheck_rules->list, list) {
+ check->code = 0;
+ switch (rule->action) {
+ case TCPCHK_ACT_CONNECT:
+ /* Not the first connection, release it first */
+ if (sc_conn(sc) && check->current_step != rule) {
+ check->state |= CHK_ST_CLOSE_CONN;
+ retcode = -1;
+ }
+
+ check->current_step = rule;
+
+ /* We are still waiting the connection gets closed */
+ if (check->state & CHK_ST_CLOSE_CONN) {
+ TRACE_DEVEL("wait previous connection closure", CHK_EV_TCPCHK_EVAL|CHK_EV_TCPCHK_CONN, check);
+ eval_ret = TCPCHK_EVAL_WAIT;
+ break;
+ }
+
+ TRACE_PROTO("eval connect rule", CHK_EV_TCPCHK_EVAL|CHK_EV_TCPCHK_CONN, check);
+ eval_ret = tcpcheck_eval_connect(check, rule);
+
+ /* Refresh connection */
+ conn = sc_conn(sc);
+ last_read = 0;
+ must_read = (IS_HTX_SC(sc) ? htx_is_empty(htxbuf(&check->bi)) : !b_data(&check->bi));
+ break;
+ case TCPCHK_ACT_SEND:
+ check->current_step = rule;
+ TRACE_PROTO("eval send rule", CHK_EV_TCPCHK_EVAL|CHK_EV_TCPCHK_SND, check);
+ eval_ret = tcpcheck_eval_send(check, rule);
+ must_read = 1;
+ break;
+ case TCPCHK_ACT_EXPECT:
+ check->current_step = rule;
+ TRACE_PROTO("eval expect rule", CHK_EV_TCPCHK_EVAL|CHK_EV_TCPCHK_EXP, check);
+ if (must_read) {
+ eval_ret = tcpcheck_eval_recv(check, rule);
+ if (eval_ret == TCPCHK_EVAL_STOP)
+ goto out_end_tcpcheck;
+ else if (eval_ret == TCPCHK_EVAL_WAIT)
+ goto out;
+ last_read = ((conn->flags & CO_FL_ERROR) || sc_ep_test(sc, SE_FL_ERROR | SE_FL_EOS));
+ must_read = 0;
+ }
+
+ eval_ret = ((check->tcpcheck_rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK
+ ? tcpcheck_eval_expect_http(check, rule, last_read)
+ : tcpcheck_eval_expect(check, rule, last_read));
+
+ if (eval_ret == TCPCHK_EVAL_WAIT) {
+ check->current_step = rule->expect.head;
+ if (!(sc->wait_event.events & SUB_RETRY_RECV))
+ conn->mux->subscribe(sc, SUB_RETRY_RECV, &sc->wait_event);
+ }
+ break;
+ case TCPCHK_ACT_ACTION_KW:
+ /* Don't update the current step */
+ TRACE_PROTO("eval action kw rule", CHK_EV_TCPCHK_EVAL|CHK_EV_TCPCHK_ACT, check);
+ eval_ret = tcpcheck_eval_action_kw(check, rule);
+ break;
+ default:
+ /* Otherwise, just go to the next one and don't update
+ * the current step
+ */
+ eval_ret = TCPCHK_EVAL_CONTINUE;
+ break;
+ }
+
+ switch (eval_ret) {
+ case TCPCHK_EVAL_CONTINUE:
+ break;
+ case TCPCHK_EVAL_WAIT:
+ goto out;
+ case TCPCHK_EVAL_STOP:
+ goto out_end_tcpcheck;
+ }
+ }
+
+ /* All rules was evaluated */
+ if (check->current_step) {
+ rule = check->current_step;
+
+ TRACE_DEVEL("eval tcp-check result", CHK_EV_TCPCHK_EVAL, check);
+
+ if (rule->action == TCPCHK_ACT_EXPECT) {
+ struct buffer *msg;
+ enum healthcheck_status status;
+
+ if (check->server &&
+ (check->server->proxy->options & PR_O_DISABLE404) &&
+ (check->server->next_state != SRV_ST_STOPPED) &&
+ (check->code == 404)) {
+ set_server_check_status(check, HCHK_STATUS_L7OKCD, NULL);
+ TRACE_PROTO("tcp-check conditionally passed (disable-404)", CHK_EV_TCPCHK_EVAL, check);
+ goto out_end_tcpcheck;
+ }
+
+ msg = alloc_trash_chunk();
+ if (msg)
+ tcpcheck_expect_onsuccess_message(msg, check, rule, IST_NULL);
+ status = ((rule->expect.ok_status != HCHK_STATUS_UNKNOWN) ? rule->expect.ok_status : HCHK_STATUS_L7OKD);
+ set_server_check_status(check, status, (msg ? b_head(msg) : "(tcp-check)"));
+ free_trash_chunk(msg);
+ }
+ else if (rule->action == TCPCHK_ACT_CONNECT) {
+ const char *msg = ((rule->connect.options & TCPCHK_OPT_IMPLICIT) ? NULL : "(tcp-check)");
+ enum healthcheck_status status = HCHK_STATUS_L4OK;
+#ifdef USE_OPENSSL
+ if (conn_is_ssl(conn))
+ status = HCHK_STATUS_L6OK;
+#endif
+ set_server_check_status(check, status, msg);
+ }
+ else
+ set_server_check_status(check, HCHK_STATUS_L7OKD, "(tcp-check)");
+ }
+ else {
+ set_server_check_status(check, HCHK_STATUS_L7OKD, "(tcp-check)");
+ }
+ TRACE_PROTO("tcp-check passed", CHK_EV_TCPCHK_EVAL, check);
+
+ out_end_tcpcheck:
+ if ((conn && conn->flags & CO_FL_ERROR) || sc_ep_test(sc, SE_FL_ERROR)) {
+ TRACE_ERROR("report connection error", CHK_EV_TCPCHK_EVAL|CHK_EV_TCPCHK_ERR, check);
+ chk_report_conn_err(check, errno, 0);
+ }
+
+ /* the tcpcheck is finished, release in/out buffer now */
+ check_release_buf(check, &check->bi);
+ check_release_buf(check, &check->bo);
+
+ out:
+ TRACE_LEAVE(CHK_EV_HCHK_RUN, check);
+ return retcode;
+}
+
+void tcp_check_keywords_register(struct action_kw_list *kw_list)
+{
+ LIST_APPEND(&tcp_check_keywords.list, &kw_list->list);
+}
+
+/**************************************************************************/
+/******************* Internals to parse tcp-check rules *******************/
+/**************************************************************************/
+struct action_kw_list tcp_check_keywords = {
+ .list = LIST_HEAD_INIT(tcp_check_keywords.list),
+};
+
+/* Creates a tcp-check rule resulting from parsing a custom keyword. NULL is
+ * returned on error.
+ */
+struct tcpcheck_rule *parse_tcpcheck_action(char **args, int cur_arg, struct proxy *px,
+ struct list *rules, struct action_kw *kw,
+ const char *file, int line, char **errmsg)
+{
+ struct tcpcheck_rule *chk = NULL;
+ struct act_rule *actrule = NULL;
+
+ actrule = new_act_rule(ACT_F_TCP_CHK, file, line);
+ if (!actrule) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ actrule->kw = kw;
+
+ cur_arg++;
+ if (kw->parse((const char **)args, &cur_arg, px, actrule, errmsg) == ACT_RET_PRS_ERR) {
+ memprintf(errmsg, "'%s' : %s", kw->kw, *errmsg);
+ goto error;
+ }
+
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->action = TCPCHK_ACT_ACTION_KW;
+ chk->action_kw.rule = actrule;
+ return chk;
+
+ error:
+ free(actrule);
+ return NULL;
+}
+
+/* Parses and creates a tcp-check connect or an http-check connect rule. NULL is
+ * returned on error.
+ */
+struct tcpcheck_rule *parse_tcpcheck_connect(char **args, int cur_arg, struct proxy *px, struct list *rules,
+ const char *file, int line, char **errmsg)
+{
+ struct tcpcheck_rule *chk = NULL;
+ struct sockaddr_storage *sk = NULL;
+ char *comment = NULL, *sni = NULL, *alpn = NULL;
+ struct sample_expr *port_expr = NULL;
+ const struct mux_proto_list *mux_proto = NULL;
+ unsigned short conn_opts = 0;
+ long port = 0;
+ int alpn_len = 0;
+
+ list_for_each_entry(chk, rules, list) {
+ if (chk->action == TCPCHK_ACT_CONNECT)
+ break;
+ if (chk->action == TCPCHK_ACT_COMMENT ||
+ chk->action == TCPCHK_ACT_ACTION_KW ||
+ (chk->action == TCPCHK_ACT_SEND && (chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)))
+ continue;
+
+ memprintf(errmsg, "first step MUST also be a 'connect', "
+ "optionally preceded by a 'set-var', an 'unset-var' or a 'comment', "
+ "when there is a 'connect' step in the tcp-check ruleset");
+ goto error;
+ }
+
+ cur_arg++;
+ while (*(args[cur_arg])) {
+ if (strcmp(args[cur_arg], "default") == 0)
+ conn_opts |= TCPCHK_OPT_DEFAULT_CONNECT;
+ else if (strcmp(args[cur_arg], "addr") == 0) {
+ int port1, port2;
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects <ipv4|ipv6> as argument.", args[cur_arg]);
+ goto error;
+ }
+
+ sk = str2sa_range(args[cur_arg+1], NULL, &port1, &port2, NULL, NULL,
+ errmsg, NULL, NULL, PA_O_RESOLVE | PA_O_PORT_OK | PA_O_STREAM | PA_O_CONNECT);
+ if (!sk) {
+ memprintf(errmsg, "'%s' : %s.", args[cur_arg], *errmsg);
+ goto error;
+ }
+
+ cur_arg++;
+ }
+ else if (strcmp(args[cur_arg], "port") == 0) {
+ const char *p, *end;
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a port number or a sample expression as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+
+ port = 0;
+ release_sample_expr(port_expr);
+ p = args[cur_arg]; end = p + strlen(p);
+ port = read_uint(&p, end);
+ if (p != end) {
+ int idx = 0;
+
+ px->conf.args.ctx = ARGC_SRV;
+ port_expr = sample_parse_expr((char *[]){args[cur_arg], NULL}, &idx,
+ file, line, errmsg, &px->conf.args, NULL);
+
+ if (!port_expr) {
+ memprintf(errmsg, "error detected while parsing port expression : %s", *errmsg);
+ goto error;
+ }
+ if (!(port_expr->fetch->val & SMP_VAL_BE_CHK_RUL)) {
+ memprintf(errmsg, "error detected while parsing port expression : "
+ " fetch method '%s' extracts information from '%s', "
+ "none of which is available here.\n",
+ args[cur_arg], sample_src_names(port_expr->fetch->use));
+ goto error;
+ }
+ px->http_needed |= !!(port_expr->fetch->use & SMP_USE_HTTP_ANY);
+ }
+ else if (port > 65535 || port < 1) {
+ memprintf(errmsg, "expects a valid TCP port (from range 1 to 65535) or a sample expression, got %s.",
+ args[cur_arg]);
+ goto error;
+ }
+ }
+ else if (strcmp(args[cur_arg], "proto") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a MUX protocol as argument.", args[cur_arg]);
+ goto error;
+ }
+ mux_proto = get_mux_proto(ist(args[cur_arg + 1]));
+ if (!mux_proto) {
+ memprintf(errmsg, "'%s' : unknown MUX protocol '%s'.", args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+
+ if (strcmp(args[0], "tcp-check") == 0 && mux_proto->mode != PROTO_MODE_TCP) {
+ memprintf(errmsg, "'%s' : invalid MUX protocol '%s' for tcp-check", args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+ else if (strcmp(args[0], "http-check") == 0 && mux_proto->mode != PROTO_MODE_HTTP) {
+ memprintf(errmsg, "'%s' : invalid MUX protocol '%s' for http-check", args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+
+ cur_arg++;
+ }
+ else if (strcmp(args[cur_arg], "comment") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ free(comment);
+ comment = strdup(args[cur_arg]);
+ if (!comment) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ else if (strcmp(args[cur_arg], "send-proxy") == 0)
+ conn_opts |= TCPCHK_OPT_SEND_PROXY;
+ else if (strcmp(args[cur_arg], "via-socks4") == 0)
+ conn_opts |= TCPCHK_OPT_SOCKS4;
+ else if (strcmp(args[cur_arg], "linger") == 0)
+ conn_opts |= TCPCHK_OPT_LINGER;
+#ifdef USE_OPENSSL
+ else if (strcmp(args[cur_arg], "ssl") == 0) {
+ px->options |= PR_O_TCPCHK_SSL;
+ conn_opts |= TCPCHK_OPT_SSL;
+ }
+ else if (strcmp(args[cur_arg], "sni") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ free(sni);
+ sni = strdup(args[cur_arg]);
+ if (!sni) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ else if (strcmp(args[cur_arg], "alpn") == 0) {
+#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
+ free(alpn);
+ if (ssl_sock_parse_alpn(args[cur_arg + 1], &alpn, &alpn_len, errmsg)) {
+ memprintf(errmsg, "'%s' : %s", args[cur_arg], *errmsg);
+ goto error;
+ }
+ cur_arg++;
+#else
+ memprintf(errmsg, "'%s' : library does not support TLS ALPN extension.", args[cur_arg]);
+ goto error;
+#endif
+ }
+#endif /* USE_OPENSSL */
+
+ else {
+ memprintf(errmsg, "expects 'comment', 'port', 'addr', 'send-proxy'"
+#ifdef USE_OPENSSL
+ ", 'ssl', 'sni', 'alpn'"
+#endif /* USE_OPENSSL */
+ " or 'via-socks4', 'linger', 'default' but got '%s' as argument.",
+ args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ }
+
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->action = TCPCHK_ACT_CONNECT;
+ chk->comment = comment;
+ chk->connect.port = port;
+ chk->connect.options = conn_opts;
+ chk->connect.sni = sni;
+ chk->connect.alpn = alpn;
+ chk->connect.alpn_len= alpn_len;
+ chk->connect.port_expr= port_expr;
+ chk->connect.mux_proto= mux_proto;
+ if (sk)
+ chk->connect.addr = *sk;
+ return chk;
+
+ error:
+ free(alpn);
+ free(sni);
+ free(comment);
+ release_sample_expr(port_expr);
+ return NULL;
+}
+
+/* Parses and creates a tcp-check send rule. NULL is returned on error */
+struct tcpcheck_rule *parse_tcpcheck_send(char **args, int cur_arg, struct proxy *px, struct list *rules,
+ const char *file, int line, char **errmsg)
+{
+ struct tcpcheck_rule *chk = NULL;
+ char *comment = NULL, *data = NULL;
+ enum tcpcheck_send_type type = TCPCHK_SEND_UNDEF;
+
+ if (strcmp(args[cur_arg], "send-binary-lf") == 0)
+ type = TCPCHK_SEND_BINARY_LF;
+ else if (strcmp(args[cur_arg], "send-binary") == 0)
+ type = TCPCHK_SEND_BINARY;
+ else if (strcmp(args[cur_arg], "send-lf") == 0)
+ type = TCPCHK_SEND_STRING_LF;
+ else if (strcmp(args[cur_arg], "send") == 0)
+ type = TCPCHK_SEND_STRING;
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a %s as argument",
+ (type == TCPCHK_SEND_BINARY ? "binary string": "string"), args[cur_arg]);
+ goto error;
+ }
+
+ data = args[cur_arg+1];
+
+ cur_arg += 2;
+ while (*(args[cur_arg])) {
+ if (strcmp(args[cur_arg], "comment") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ free(comment);
+ comment = strdup(args[cur_arg]);
+ if (!comment) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ else {
+ memprintf(errmsg, "expects 'comment' but got '%s' as argument.",
+ args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ }
+
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->action = TCPCHK_ACT_SEND;
+ chk->comment = comment;
+ chk->send.type = type;
+
+ switch (chk->send.type) {
+ case TCPCHK_SEND_STRING:
+ chk->send.data = ist(strdup(data));
+ if (!isttest(chk->send.data)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ break;
+ case TCPCHK_SEND_BINARY: {
+ int len = chk->send.data.len;
+ if (parse_binary(data, &chk->send.data.ptr, &len, errmsg) == 0) {
+ memprintf(errmsg, "'%s' invalid binary string (%s).\n", data, *errmsg);
+ goto error;
+ }
+ chk->send.data.len = len;
+ break;
+ }
+ case TCPCHK_SEND_STRING_LF:
+ case TCPCHK_SEND_BINARY_LF:
+ LIST_INIT(&chk->send.fmt);
+ px->conf.args.ctx = ARGC_SRV;
+ if (!parse_logformat_string(data, px, &chk->send.fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", data, *errmsg);
+ goto error;
+ }
+ break;
+ case TCPCHK_SEND_HTTP:
+ case TCPCHK_SEND_UNDEF:
+ goto error;
+ }
+
+ return chk;
+
+ error:
+ free(chk);
+ free(comment);
+ return NULL;
+}
+
+/* Parses and creates a http-check send rule. NULL is returned on error */
+struct tcpcheck_rule *parse_tcpcheck_send_http(char **args, int cur_arg, struct proxy *px, struct list *rules,
+ const char *file, int line, char **errmsg)
+{
+ struct tcpcheck_rule *chk = NULL;
+ struct tcpcheck_http_hdr *hdr = NULL;
+ struct http_hdr hdrs[global.tune.max_http_hdr];
+ char *meth = NULL, *uri = NULL, *vsn = NULL;
+ char *body = NULL, *comment = NULL;
+ unsigned int flags = 0;
+ int i = 0, host_hdr = -1;
+
+ cur_arg++;
+ while (*(args[cur_arg])) {
+ if (strcmp(args[cur_arg], "meth") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ meth = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "uri") == 0 || strcmp(args[cur_arg], "uri-lf") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ flags &= ~TCPCHK_SND_HTTP_FL_URI_FMT;
+ if (strcmp(args[cur_arg], "uri-lf") == 0)
+ flags |= TCPCHK_SND_HTTP_FL_URI_FMT;
+ cur_arg++;
+ uri = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "ver") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ vsn = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "hdr") == 0) {
+ if (!*args[cur_arg+1] || !*args[cur_arg+2]) {
+ memprintf(errmsg, "'%s' expects <name> and <value> as arguments", args[cur_arg]);
+ goto error;
+ }
+
+ if (strcasecmp(args[cur_arg+1], "host") == 0) {
+ if (host_hdr >= 0) {
+ memprintf(errmsg, "'%s' header already defined (previous value is '%s')",
+ args[cur_arg+1], istptr(hdrs[host_hdr].v));
+ goto error;
+ }
+ host_hdr = i;
+ }
+ else if (strcasecmp(args[cur_arg+1], "content-length") == 0 ||
+ strcasecmp(args[cur_arg+1], "transfer-encoding") == 0)
+ goto skip_hdr;
+
+ hdrs[i].n = ist(args[cur_arg + 1]);
+ hdrs[i].v = ist(args[cur_arg + 2]);
+ i++;
+ skip_hdr:
+ cur_arg += 2;
+ }
+ else if (strcmp(args[cur_arg], "body") == 0 || strcmp(args[cur_arg], "body-lf") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ flags &= ~TCPCHK_SND_HTTP_FL_BODY_FMT;
+ if (strcmp(args[cur_arg], "body-lf") == 0)
+ flags |= TCPCHK_SND_HTTP_FL_BODY_FMT;
+ cur_arg++;
+ body = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "comment") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ free(comment);
+ comment = strdup(args[cur_arg]);
+ if (!comment) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ else {
+ memprintf(errmsg, "expects 'comment', 'meth', 'uri', 'uri-lf', 'ver', 'hdr', 'body' or 'body-lf'"
+ " but got '%s' as argument.", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ }
+
+ hdrs[i].n = hdrs[i].v = IST_NULL;
+
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->action = TCPCHK_ACT_SEND;
+ chk->comment = comment; comment = NULL;
+ chk->send.type = TCPCHK_SEND_HTTP;
+ chk->send.http.flags = flags;
+ LIST_INIT(&chk->send.http.hdrs);
+
+ if (meth) {
+ chk->send.http.meth.meth = find_http_meth(meth, strlen(meth));
+ chk->send.http.meth.str.area = strdup(meth);
+ chk->send.http.meth.str.data = strlen(meth);
+ if (!chk->send.http.meth.str.area) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ if (uri) {
+ if (chk->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) {
+ LIST_INIT(&chk->send.http.uri_fmt);
+ px->conf.args.ctx = ARGC_SRV;
+ if (!parse_logformat_string(uri, px, &chk->send.http.uri_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", uri, *errmsg);
+ goto error;
+ }
+ }
+ else {
+ chk->send.http.uri = ist(strdup(uri));
+ if (!isttest(chk->send.http.uri)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ }
+ if (vsn) {
+ chk->send.http.vsn = ist(strdup(vsn));
+ if (!isttest(chk->send.http.vsn)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ for (i = 0; istlen(hdrs[i].n); i++) {
+ hdr = calloc(1, sizeof(*hdr));
+ if (!hdr) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ LIST_INIT(&hdr->value);
+ hdr->name = istdup(hdrs[i].n);
+ if (!isttest(hdr->name)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+
+ ist0(hdrs[i].v);
+ if (!parse_logformat_string(istptr(hdrs[i].v), px, &hdr->value, 0, SMP_VAL_BE_CHK_RUL, errmsg))
+ goto error;
+ LIST_APPEND(&chk->send.http.hdrs, &hdr->list);
+ hdr = NULL;
+ }
+
+ if (body) {
+ if (chk->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) {
+ LIST_INIT(&chk->send.http.body_fmt);
+ px->conf.args.ctx = ARGC_SRV;
+ if (!parse_logformat_string(body, px, &chk->send.http.body_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", body, *errmsg);
+ goto error;
+ }
+ }
+ else {
+ chk->send.http.body = ist(strdup(body));
+ if (!isttest(chk->send.http.body)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ }
+
+ return chk;
+
+ error:
+ free_tcpcheck_http_hdr(hdr);
+ free_tcpcheck(chk, 0);
+ free(comment);
+ return NULL;
+}
+
+/* Parses and creates a http-check comment rule. NULL is returned on error */
+struct tcpcheck_rule *parse_tcpcheck_comment(char **args, int cur_arg, struct proxy *px, struct list *rules,
+ const char *file, int line, char **errmsg)
+{
+ struct tcpcheck_rule *chk = NULL;
+ char *comment = NULL;
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "expects a string as argument");
+ goto error;
+ }
+ cur_arg++;
+ comment = strdup(args[cur_arg]);
+ if (!comment) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->action = TCPCHK_ACT_COMMENT;
+ chk->comment = comment;
+ return chk;
+
+ error:
+ free(comment);
+ return NULL;
+}
+
+/* Parses and creates a tcp-check or an http-check expect rule. NULL is returned
+ * on error. <proto> is set to the right protocol flags (covered by the
+ * TCPCHK_RULES_PROTO_CHK mask).
+ */
+struct tcpcheck_rule *parse_tcpcheck_expect(char **args, int cur_arg, struct proxy *px,
+ struct list *rules, unsigned int proto,
+ const char *file, int line, char **errmsg)
+{
+ struct tcpcheck_rule *prev_check, *chk = NULL;
+ struct sample_expr *status_expr = NULL;
+ char *on_success_msg, *on_error_msg, *comment, *pattern, *npat, *vpat;
+ enum tcpcheck_expect_type type = TCPCHK_EXPECT_UNDEF;
+ enum healthcheck_status ok_st = HCHK_STATUS_UNKNOWN;
+ enum healthcheck_status err_st = HCHK_STATUS_UNKNOWN;
+ enum healthcheck_status tout_st = HCHK_STATUS_UNKNOWN;
+ unsigned int flags = 0;
+ long min_recv = -1;
+ int inverse = 0;
+
+ on_success_msg = on_error_msg = comment = pattern = npat = vpat = NULL;
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "expects at least a matching pattern as arguments");
+ goto error;
+ }
+
+ cur_arg++;
+ while (*(args[cur_arg])) {
+ int in_pattern = 0;
+
+ rescan:
+ if (strcmp(args[cur_arg], "min-recv") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a integer as argument", args[cur_arg]);
+ goto error;
+ }
+ /* Use an signed integer here because of bufsize */
+ cur_arg++;
+ min_recv = atol(args[cur_arg]);
+ if (min_recv < -1 || min_recv > INT_MAX) {
+ memprintf(errmsg, "'%s' expects -1 or an integer from 0 to INT_MAX" , args[cur_arg-1]);
+ goto error;
+ }
+ }
+ else if (*(args[cur_arg]) == '!') {
+ in_pattern = 1;
+ while (*(args[cur_arg]) == '!') {
+ inverse = !inverse;
+ args[cur_arg]++;
+ }
+ if (!*(args[cur_arg]))
+ cur_arg++;
+ goto rescan;
+ }
+ else if (strcmp(args[cur_arg], "string") == 0 || strcmp(args[cur_arg], "rstring") == 0) {
+ if (type != TCPCHK_EXPECT_UNDEF) {
+ memprintf(errmsg, "only on pattern expected");
+ goto error;
+ }
+ if (proto != TCPCHK_RULES_HTTP_CHK)
+ type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_STRING : TCPCHK_EXPECT_STRING_REGEX);
+ else
+ type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_HTTP_BODY : TCPCHK_EXPECT_HTTP_BODY_REGEX);
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ pattern = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "binary") == 0 || strcmp(args[cur_arg], "rbinary") == 0) {
+ if (proto == TCPCHK_RULES_HTTP_CHK)
+ goto bad_http_kw;
+ if (type != TCPCHK_EXPECT_UNDEF) {
+ memprintf(errmsg, "only on pattern expected");
+ goto error;
+ }
+ type = ((*(args[cur_arg]) == 'b') ? TCPCHK_EXPECT_BINARY : TCPCHK_EXPECT_BINARY_REGEX);
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ pattern = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "string-lf") == 0 || strcmp(args[cur_arg], "binary-lf") == 0) {
+ if (type != TCPCHK_EXPECT_UNDEF) {
+ memprintf(errmsg, "only on pattern expected");
+ goto error;
+ }
+ if (proto != TCPCHK_RULES_HTTP_CHK)
+ type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_STRING_LF : TCPCHK_EXPECT_BINARY_LF);
+ else {
+ if (*(args[cur_arg]) != 's')
+ goto bad_http_kw;
+ type = TCPCHK_EXPECT_HTTP_BODY_LF;
+ }
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ pattern = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "status") == 0 || strcmp(args[cur_arg], "rstatus") == 0) {
+ if (proto != TCPCHK_RULES_HTTP_CHK)
+ goto bad_tcp_kw;
+ if (type != TCPCHK_EXPECT_UNDEF) {
+ memprintf(errmsg, "only on pattern expected");
+ goto error;
+ }
+ type = ((*(args[cur_arg]) == 's') ? TCPCHK_EXPECT_HTTP_STATUS : TCPCHK_EXPECT_HTTP_STATUS_REGEX);
+
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a <pattern> as argument", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ pattern = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "custom") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (type != TCPCHK_EXPECT_UNDEF) {
+ memprintf(errmsg, "only on pattern expected");
+ goto error;
+ }
+ type = TCPCHK_EXPECT_CUSTOM;
+ }
+ else if (strcmp(args[cur_arg], "hdr") == 0 || strcmp(args[cur_arg], "fhdr") == 0) {
+ int orig_arg = cur_arg;
+
+ if (proto != TCPCHK_RULES_HTTP_CHK)
+ goto bad_tcp_kw;
+ if (type != TCPCHK_EXPECT_UNDEF) {
+ memprintf(errmsg, "only on pattern expected");
+ goto error;
+ }
+ type = TCPCHK_EXPECT_HTTP_HEADER;
+
+ if (strcmp(args[cur_arg], "fhdr") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_FULL;
+
+ /* Parse the name pattern, mandatory */
+ if (!*(args[cur_arg+1]) || !*(args[cur_arg+2]) ||
+ (strcmp(args[cur_arg+1], "name") != 0 && strcmp(args[cur_arg+1], "name-lf") != 0)) {
+ memprintf(errmsg, "'%s' expects at the name keyword as first argument followed by a pattern",
+ args[orig_arg]);
+ goto error;
+ }
+
+ if (strcmp(args[cur_arg+1], "name-lf") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HNAME_FMT;
+
+ cur_arg += 2;
+ if (strcmp(args[cur_arg], "-m") == 0) {
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' : '%s' expects at a matching pattern ('str', 'beg', 'end', 'sub' or 'reg')",
+ args[orig_arg], args[cur_arg]);
+ goto error;
+ }
+ if (strcmp(args[cur_arg+1], "str") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HNAME_STR;
+ else if (strcmp(args[cur_arg+1], "beg") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HNAME_BEG;
+ else if (strcmp(args[cur_arg+1], "end") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HNAME_END;
+ else if (strcmp(args[cur_arg+1], "sub") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HNAME_SUB;
+ else if (strcmp(args[cur_arg+1], "reg") == 0) {
+ if (flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT) {
+ memprintf(errmsg, "'%s': log-format string is not supported with a regex matching method",
+ args[orig_arg]);
+ goto error;
+ }
+ flags |= TCPCHK_EXPT_FL_HTTP_HNAME_REG;
+ }
+ else {
+ memprintf(errmsg, "'%s' : '%s' only supports 'str', 'beg', 'end', 'sub' or 'reg' (got '%s')",
+ args[orig_arg], args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+ cur_arg += 2;
+ }
+ else
+ flags |= TCPCHK_EXPT_FL_HTTP_HNAME_STR;
+ npat = args[cur_arg];
+
+ if (!*(args[cur_arg+1]) ||
+ (strcmp(args[cur_arg+1], "value") != 0 && strcmp(args[cur_arg+1], "value-lf") != 0)) {
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_NONE;
+ goto next;
+ }
+ if (strcmp(args[cur_arg+1], "value-lf") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_FMT;
+
+ /* Parse the value pattern, optional */
+ if (strcmp(args[cur_arg+2], "-m") == 0) {
+ cur_arg += 2;
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' : '%s' expects at a matching pattern ('str', 'beg', 'end', 'sub' or 'reg')",
+ args[orig_arg], args[cur_arg]);
+ goto error;
+ }
+ if (strcmp(args[cur_arg+1], "str") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_STR;
+ else if (strcmp(args[cur_arg+1], "beg") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_BEG;
+ else if (strcmp(args[cur_arg+1], "end") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_END;
+ else if (strcmp(args[cur_arg+1], "sub") == 0)
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_SUB;
+ else if (strcmp(args[cur_arg+1], "reg") == 0) {
+ if (flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT) {
+ memprintf(errmsg, "'%s': log-format string is not supported with a regex matching method",
+ args[orig_arg]);
+ goto error;
+ }
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_REG;
+ }
+ else {
+ memprintf(errmsg, "'%s' : '%s' only supports 'str', 'beg', 'end', 'sub' or 'reg' (got '%s')",
+ args[orig_arg], args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+ }
+ else
+ flags |= TCPCHK_EXPT_FL_HTTP_HVAL_STR;
+
+ if (!*(args[cur_arg+2])) {
+ memprintf(errmsg, "'%s' expect a pattern with the value keyword", args[orig_arg]);
+ goto error;
+ }
+ vpat = args[cur_arg+2];
+ cur_arg += 2;
+ }
+ else if (strcmp(args[cur_arg], "comment") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ free(comment);
+ comment = strdup(args[cur_arg]);
+ if (!comment) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ else if (strcmp(args[cur_arg], "on-success") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ on_success_msg = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "on-error") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]);
+ goto error;
+ }
+ cur_arg++;
+ on_error_msg = args[cur_arg];
+ }
+ else if (strcmp(args[cur_arg], "ok-status") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]);
+ goto error;
+ }
+ if (strcasecmp(args[cur_arg+1], "L7OK") == 0)
+ ok_st = HCHK_STATUS_L7OKD;
+ else if (strcasecmp(args[cur_arg+1], "L7OKC") == 0)
+ ok_st = HCHK_STATUS_L7OKCD;
+ else if (strcasecmp(args[cur_arg+1], "L6OK") == 0)
+ ok_st = HCHK_STATUS_L6OK;
+ else if (strcasecmp(args[cur_arg+1], "L4OK") == 0)
+ ok_st = HCHK_STATUS_L4OK;
+ else {
+ memprintf(errmsg, "'%s' only supports 'L4OK', 'L6OK', 'L7OK' or 'L7OKC' status (got '%s').",
+ args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+ cur_arg++;
+ }
+ else if (strcmp(args[cur_arg], "error-status") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]);
+ goto error;
+ }
+ if (strcasecmp(args[cur_arg+1], "L7RSP") == 0)
+ err_st = HCHK_STATUS_L7RSP;
+ else if (strcasecmp(args[cur_arg+1], "L7STS") == 0)
+ err_st = HCHK_STATUS_L7STS;
+ else if (strcasecmp(args[cur_arg+1], "L7OKC") == 0)
+ err_st = HCHK_STATUS_L7OKCD;
+ else if (strcasecmp(args[cur_arg+1], "L6RSP") == 0)
+ err_st = HCHK_STATUS_L6RSP;
+ else if (strcasecmp(args[cur_arg+1], "L4CON") == 0)
+ err_st = HCHK_STATUS_L4CON;
+ else {
+ memprintf(errmsg, "'%s' only supports 'L4CON', 'L6RSP', 'L7RSP' or 'L7STS' status (got '%s').",
+ args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+ cur_arg++;
+ }
+ else if (strcmp(args[cur_arg], "status-code") == 0) {
+ int idx = 0;
+
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects an expression as argument", args[cur_arg]);
+ goto error;
+ }
+
+ cur_arg++;
+ release_sample_expr(status_expr);
+ px->conf.args.ctx = ARGC_SRV;
+ status_expr = sample_parse_expr((char *[]){args[cur_arg], NULL}, &idx,
+ file, line, errmsg, &px->conf.args, NULL);
+ if (!status_expr) {
+ memprintf(errmsg, "error detected while parsing status-code expression : %s", *errmsg);
+ goto error;
+ }
+ if (!(status_expr->fetch->val & SMP_VAL_BE_CHK_RUL)) {
+ memprintf(errmsg, "error detected while parsing status-code expression : "
+ " fetch method '%s' extracts information from '%s', "
+ "none of which is available here.\n",
+ args[cur_arg], sample_src_names(status_expr->fetch->use));
+ goto error;
+ }
+ px->http_needed |= !!(status_expr->fetch->use & SMP_USE_HTTP_ANY);
+ }
+ else if (strcmp(args[cur_arg], "tout-status") == 0) {
+ if (in_pattern) {
+ memprintf(errmsg, "[!] not supported with '%s'", args[cur_arg]);
+ goto error;
+ }
+ if (!*(args[cur_arg+1])) {
+ memprintf(errmsg, "'%s' expects a string as argument", args[cur_arg]);
+ goto error;
+ }
+ if (strcasecmp(args[cur_arg+1], "L7TOUT") == 0)
+ tout_st = HCHK_STATUS_L7TOUT;
+ else if (strcasecmp(args[cur_arg+1], "L6TOUT") == 0)
+ tout_st = HCHK_STATUS_L6TOUT;
+ else if (strcasecmp(args[cur_arg+1], "L4TOUT") == 0)
+ tout_st = HCHK_STATUS_L4TOUT;
+ else {
+ memprintf(errmsg, "'%s' only supports 'L4TOUT', 'L6TOUT' or 'L7TOUT' status (got '%s').",
+ args[cur_arg], args[cur_arg+1]);
+ goto error;
+ }
+ cur_arg++;
+ }
+ else {
+ if (proto == TCPCHK_RULES_HTTP_CHK) {
+ bad_http_kw:
+ memprintf(errmsg, "'only supports min-recv, [!]string', '[!]rstring', '[!]string-lf', '[!]status', "
+ "'[!]rstatus', [!]hdr, [!]fhdr or comment but got '%s' as argument.", args[cur_arg]);
+ }
+ else {
+ bad_tcp_kw:
+ memprintf(errmsg, "'only supports min-recv, '[!]binary', '[!]string', '[!]rstring', '[!]string-lf'"
+ "'[!]rbinary', '[!]binary-lf' or comment but got '%s' as argument.", args[cur_arg]);
+ }
+ goto error;
+ }
+ next:
+ cur_arg++;
+ }
+
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->action = TCPCHK_ACT_EXPECT;
+ LIST_INIT(&chk->expect.onerror_fmt);
+ LIST_INIT(&chk->expect.onsuccess_fmt);
+ chk->comment = comment; comment = NULL;
+ chk->expect.type = type;
+ chk->expect.min_recv = min_recv;
+ chk->expect.flags = flags | (inverse ? TCPCHK_EXPT_FL_INV : 0);
+ chk->expect.ok_status = ok_st;
+ chk->expect.err_status = err_st;
+ chk->expect.tout_status = tout_st;
+ chk->expect.status_expr = status_expr; status_expr = NULL;
+
+ if (on_success_msg) {
+ px->conf.args.ctx = ARGC_SRV;
+ if (!parse_logformat_string(on_success_msg, px, &chk->expect.onsuccess_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", on_success_msg, *errmsg);
+ goto error;
+ }
+ }
+ if (on_error_msg) {
+ px->conf.args.ctx = ARGC_SRV;
+ if (!parse_logformat_string(on_error_msg, px, &chk->expect.onerror_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", on_error_msg, *errmsg);
+ goto error;
+ }
+ }
+
+ switch (chk->expect.type) {
+ case TCPCHK_EXPECT_HTTP_STATUS: {
+ const char *p = pattern;
+ unsigned int c1,c2;
+
+ chk->expect.codes.codes = NULL;
+ chk->expect.codes.num = 0;
+ while (1) {
+ c1 = c2 = read_uint(&p, pattern + strlen(pattern));
+ if (*p == '-') {
+ p++;
+ c2 = read_uint(&p, pattern + strlen(pattern));
+ }
+ if (c1 > c2) {
+ memprintf(errmsg, "invalid range of status codes '%s'", pattern);
+ goto error;
+ }
+
+ chk->expect.codes.num++;
+ chk->expect.codes.codes = my_realloc2(chk->expect.codes.codes,
+ chk->expect.codes.num * sizeof(*chk->expect.codes.codes));
+ if (!chk->expect.codes.codes) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->expect.codes.codes[chk->expect.codes.num-1][0] = c1;
+ chk->expect.codes.codes[chk->expect.codes.num-1][1] = c2;
+
+ if (*p == '\0')
+ break;
+ if (*p != ',') {
+ memprintf(errmsg, "invalid character '%c' in the list of status codes", *p);
+ goto error;
+ }
+ p++;
+ }
+ break;
+ }
+ case TCPCHK_EXPECT_STRING:
+ case TCPCHK_EXPECT_HTTP_BODY:
+ chk->expect.data = ist(strdup(pattern));
+ if (!isttest(chk->expect.data)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ break;
+ case TCPCHK_EXPECT_BINARY: {
+ int len = chk->expect.data.len;
+
+ if (parse_binary(pattern, &chk->expect.data.ptr, &len, errmsg) == 0) {
+ memprintf(errmsg, "invalid binary string (%s)", *errmsg);
+ goto error;
+ }
+ chk->expect.data.len = len;
+ break;
+ }
+ case TCPCHK_EXPECT_STRING_REGEX:
+ case TCPCHK_EXPECT_BINARY_REGEX:
+ case TCPCHK_EXPECT_HTTP_STATUS_REGEX:
+ case TCPCHK_EXPECT_HTTP_BODY_REGEX:
+ chk->expect.regex = regex_comp(pattern, 1, 0, errmsg);
+ if (!chk->expect.regex)
+ goto error;
+ break;
+
+ case TCPCHK_EXPECT_STRING_LF:
+ case TCPCHK_EXPECT_BINARY_LF:
+ case TCPCHK_EXPECT_HTTP_BODY_LF:
+ LIST_INIT(&chk->expect.fmt);
+ px->conf.args.ctx = ARGC_SRV;
+ if (!parse_logformat_string(pattern, px, &chk->expect.fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", pattern, *errmsg);
+ goto error;
+ }
+ break;
+
+ case TCPCHK_EXPECT_HTTP_HEADER:
+ if (!npat) {
+ memprintf(errmsg, "unexpected error, undefined header name pattern");
+ goto error;
+ }
+ if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_REG) {
+ chk->expect.hdr.name_re = regex_comp(npat, 0, 0, errmsg);
+ if (!chk->expect.hdr.name_re)
+ goto error;
+ }
+ else if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HNAME_FMT) {
+ px->conf.args.ctx = ARGC_SRV;
+ LIST_INIT(&chk->expect.hdr.name_fmt);
+ if (!parse_logformat_string(npat, px, &chk->expect.hdr.name_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", npat, *errmsg);
+ goto error;
+ }
+ }
+ else {
+ chk->expect.hdr.name = ist(strdup(npat));
+ if (!isttest(chk->expect.hdr.name)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+
+ if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_NONE) {
+ chk->expect.hdr.value = IST_NULL;
+ break;
+ }
+
+ if (!vpat) {
+ memprintf(errmsg, "unexpected error, undefined header value pattern");
+ goto error;
+ }
+ else if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_REG) {
+ chk->expect.hdr.value_re = regex_comp(vpat, 1, 0, errmsg);
+ if (!chk->expect.hdr.value_re)
+ goto error;
+ }
+ else if (chk->expect.flags & TCPCHK_EXPT_FL_HTTP_HVAL_FMT) {
+ px->conf.args.ctx = ARGC_SRV;
+ LIST_INIT(&chk->expect.hdr.value_fmt);
+ if (!parse_logformat_string(vpat, px, &chk->expect.hdr.value_fmt, 0, SMP_VAL_BE_CHK_RUL, errmsg)) {
+ memprintf(errmsg, "'%s' invalid log-format string (%s).\n", npat, *errmsg);
+ goto error;
+ }
+ }
+ else {
+ chk->expect.hdr.value = ist(strdup(vpat));
+ if (!isttest(chk->expect.hdr.value)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+
+ break;
+ case TCPCHK_EXPECT_CUSTOM:
+ chk->expect.custom = NULL; /* Must be defined by the caller ! */
+ break;
+ case TCPCHK_EXPECT_UNDEF:
+ memprintf(errmsg, "pattern not found");
+ goto error;
+ }
+
+ /* All tcp-check expect points back to the first inverse expect rule in
+ * a chain of one or more expect rule, potentially itself.
+ */
+ chk->expect.head = chk;
+ list_for_each_entry_rev(prev_check, rules, list) {
+ if (prev_check->action == TCPCHK_ACT_EXPECT) {
+ if (prev_check->expect.flags & TCPCHK_EXPT_FL_INV)
+ chk->expect.head = prev_check;
+ continue;
+ }
+ if (prev_check->action != TCPCHK_ACT_COMMENT && prev_check->action != TCPCHK_ACT_ACTION_KW)
+ break;
+ }
+ return chk;
+
+ error:
+ free_tcpcheck(chk, 0);
+ free(comment);
+ release_sample_expr(status_expr);
+ return NULL;
+}
+
+/* Overwrites fields of the old http send rule with those of the new one. When
+ * replaced, old values are freed and replaced by the new ones. New values are
+ * not copied but transferred. At the end <new> should be empty and can be
+ * safely released. This function never fails.
+ */
+void tcpcheck_overwrite_send_http_rule(struct tcpcheck_rule *old, struct tcpcheck_rule *new)
+{
+ struct logformat_node *lf, *lfb;
+ struct tcpcheck_http_hdr *hdr, *bhdr;
+
+
+ if (new->send.http.meth.str.area) {
+ free(old->send.http.meth.str.area);
+ old->send.http.meth.meth = new->send.http.meth.meth;
+ old->send.http.meth.str.area = new->send.http.meth.str.area;
+ old->send.http.meth.str.data = new->send.http.meth.str.data;
+ new->send.http.meth.str = BUF_NULL;
+ }
+
+ if (!(new->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) && isttest(new->send.http.uri)) {
+ if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT))
+ istfree(&old->send.http.uri);
+ else
+ free_tcpcheck_fmt(&old->send.http.uri_fmt);
+ old->send.http.flags &= ~TCPCHK_SND_HTTP_FL_URI_FMT;
+ old->send.http.uri = new->send.http.uri;
+ new->send.http.uri = IST_NULL;
+ }
+ else if ((new->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT) && !LIST_ISEMPTY(&new->send.http.uri_fmt)) {
+ if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_URI_FMT))
+ istfree(&old->send.http.uri);
+ else
+ free_tcpcheck_fmt(&old->send.http.uri_fmt);
+ old->send.http.flags |= TCPCHK_SND_HTTP_FL_URI_FMT;
+ LIST_INIT(&old->send.http.uri_fmt);
+ list_for_each_entry_safe(lf, lfb, &new->send.http.uri_fmt, list) {
+ LIST_DELETE(&lf->list);
+ LIST_APPEND(&old->send.http.uri_fmt, &lf->list);
+ }
+ }
+
+ if (isttest(new->send.http.vsn)) {
+ istfree(&old->send.http.vsn);
+ old->send.http.vsn = new->send.http.vsn;
+ new->send.http.vsn = IST_NULL;
+ }
+
+ if (!LIST_ISEMPTY(&new->send.http.hdrs)) {
+ free_tcpcheck_http_hdrs(&old->send.http.hdrs);
+ list_for_each_entry_safe(hdr, bhdr, &new->send.http.hdrs, list) {
+ LIST_DELETE(&hdr->list);
+ LIST_APPEND(&old->send.http.hdrs, &hdr->list);
+ }
+ }
+
+ if (!(new->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) && isttest(new->send.http.body)) {
+ if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT))
+ istfree(&old->send.http.body);
+ else
+ free_tcpcheck_fmt(&old->send.http.body_fmt);
+ old->send.http.flags &= ~TCPCHK_SND_HTTP_FL_BODY_FMT;
+ old->send.http.body = new->send.http.body;
+ new->send.http.body = IST_NULL;
+ }
+ else if ((new->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT) && !LIST_ISEMPTY(&new->send.http.body_fmt)) {
+ if (!(old->send.http.flags & TCPCHK_SND_HTTP_FL_BODY_FMT))
+ istfree(&old->send.http.body);
+ else
+ free_tcpcheck_fmt(&old->send.http.body_fmt);
+ old->send.http.flags |= TCPCHK_SND_HTTP_FL_BODY_FMT;
+ LIST_INIT(&old->send.http.body_fmt);
+ list_for_each_entry_safe(lf, lfb, &new->send.http.body_fmt, list) {
+ LIST_DELETE(&lf->list);
+ LIST_APPEND(&old->send.http.body_fmt, &lf->list);
+ }
+ }
+}
+
+/* Internal function used to add an http-check rule in a list during the config
+ * parsing step. Depending on its type, and the previously inserted rules, a
+ * specific action may be performed or an error may be reported. This functions
+ * returns 1 on success and 0 on error and <errmsg> is filled with the error
+ * message.
+ */
+int tcpcheck_add_http_rule(struct tcpcheck_rule *chk, struct tcpcheck_rules *rules, char **errmsg)
+{
+ struct tcpcheck_rule *r;
+
+ /* the implicit send rule coming from an "option httpchk" line must be
+ * merged with the first explici http-check send rule, if
+ * any. Depending on the declaration order some tests are required.
+ *
+ * Some tests are also required for other kinds of http-check rules to be
+ * sure the ruleset remains valid.
+ */
+
+ if (chk->action == TCPCHK_ACT_SEND && (chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)) {
+ /* Tries to add an implicit http-check send rule from an "option httpchk" line.
+ * First, the first rule is retrieved, skipping the first CONNECT, if any, and
+ * following tests are performed :
+ *
+ * 1- If there is no such rule or if it is not a send rule, the implicit send
+ * rule is pushed in front of the ruleset
+ *
+ * 2- If it is another implicit send rule, it is replaced with the new one.
+ *
+ * 3- Otherwise, it means it is an explicit send rule. In this case we merge
+ * both, overwriting the old send rule (the explicit one) with info of the
+ * new send rule (the implicit one).
+ */
+ r = get_first_tcpcheck_rule(rules);
+ if (r && r->action == TCPCHK_ACT_CONNECT)
+ r = get_next_tcpcheck_rule(rules, r);
+ if (!r || r->action != TCPCHK_ACT_SEND)
+ LIST_INSERT(rules->list, &chk->list);
+ else if (r->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT) {
+ LIST_DELETE(&r->list);
+ free_tcpcheck(r, 0);
+ LIST_INSERT(rules->list, &chk->list);
+ }
+ else {
+ tcpcheck_overwrite_send_http_rule(r, chk);
+ free_tcpcheck(chk, 0);
+ }
+ }
+ else {
+ /* Tries to add an explicit http-check rule. First of all we check the typefo the
+ * last inserted rule to be sure it is valid. Then for send rule, we try to merge it
+ * with an existing implicit send rule, if any. At the end, if there is no error,
+ * the rule is appended to the list.
+ */
+
+ r = get_last_tcpcheck_rule(rules);
+ if (!r || (r->action == TCPCHK_ACT_SEND && (r->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)))
+ /* no error */;
+ else if (r->action != TCPCHK_ACT_CONNECT && chk->action == TCPCHK_ACT_SEND) {
+ memprintf(errmsg, "unable to add http-check send rule at step %d (missing connect rule).",
+ chk->index+1);
+ return 0;
+ }
+ else if (r->action != TCPCHK_ACT_SEND && r->action != TCPCHK_ACT_EXPECT && chk->action == TCPCHK_ACT_EXPECT) {
+ memprintf(errmsg, "unable to add http-check expect rule at step %d (missing send rule).",
+ chk->index+1);
+ return 0;
+ }
+ else if (r->action != TCPCHK_ACT_EXPECT && chk->action == TCPCHK_ACT_CONNECT) {
+ memprintf(errmsg, "unable to add http-check connect rule at step %d (missing expect rule).",
+ chk->index+1);
+ return 0;
+ }
+
+ if (chk->action == TCPCHK_ACT_SEND) {
+ r = get_first_tcpcheck_rule(rules);
+ if (r && r->action == TCPCHK_ACT_SEND && (r->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)) {
+ tcpcheck_overwrite_send_http_rule(r, chk);
+ free_tcpcheck(chk, 0);
+ LIST_DELETE(&r->list);
+ r->send.http.flags &= ~TCPCHK_SND_HTTP_FROM_OPT;
+ chk = r;
+ }
+ }
+ LIST_APPEND(rules->list, &chk->list);
+ }
+ return 1;
+}
+
+/* Check tcp-check health-check configuration for the proxy <px>. */
+static int check_proxy_tcpcheck(struct proxy *px)
+{
+ struct tcpcheck_rule *chk, *back;
+ char *comment = NULL, *errmsg = NULL;
+ enum tcpcheck_rule_type prev_action = TCPCHK_ACT_COMMENT;
+ int ret = ERR_NONE;
+
+ if (!(px->cap & PR_CAP_BE) || (px->options2 & PR_O2_CHK_ANY) != PR_O2_TCPCHK_CHK) {
+ deinit_proxy_tcpcheck(px);
+ goto out;
+ }
+
+ ha_free(&px->check_command);
+ ha_free(&px->check_path);
+
+ if (!px->tcpcheck_rules.list) {
+ ha_alert("proxy '%s' : tcp-check configured but no ruleset defined.\n", px->id);
+ ret |= ERR_ALERT | ERR_FATAL;
+ goto out;
+ }
+
+ /* HTTP ruleset only : */
+ if ((px->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK) {
+ struct tcpcheck_rule *next;
+
+ /* move remaining implicit send rule from "option httpchk" line to the right place.
+ * If such rule exists, it must be the first one. In this case, the rule is moved
+ * after the first connect rule, if any. Otherwise, nothing is done.
+ */
+ chk = get_first_tcpcheck_rule(&px->tcpcheck_rules);
+ if (chk && chk->action == TCPCHK_ACT_SEND && (chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT)) {
+ next = get_next_tcpcheck_rule(&px->tcpcheck_rules, chk);
+ if (next && next->action == TCPCHK_ACT_CONNECT) {
+ LIST_DELETE(&chk->list);
+ LIST_INSERT(&next->list, &chk->list);
+ chk->index = next->index + 1;
+ }
+ }
+
+ /* add implicit expect rule if the last one is a send. It is inherited from previous
+ * versions where the http expect rule was optional. Now it is possible to chained
+ * send/expect rules but the last expect may still be implicit.
+ */
+ chk = get_last_tcpcheck_rule(&px->tcpcheck_rules);
+ if (chk && chk->action == TCPCHK_ACT_SEND) {
+ next = parse_tcpcheck_expect((char *[]){"http-check", "expect", "status", "200-399", ""},
+ 1, px, px->tcpcheck_rules.list, TCPCHK_RULES_HTTP_CHK,
+ px->conf.file, px->conf.line, &errmsg);
+ if (!next) {
+ ha_alert("proxy '%s': unable to add implicit http-check expect rule "
+ "(%s).\n", px->id, errmsg);
+ free(errmsg);
+ ret |= ERR_ALERT | ERR_FATAL;
+ goto out;
+ }
+ LIST_APPEND(px->tcpcheck_rules.list, &next->list);
+ next->index = chk->index + 1;
+ }
+ }
+
+ /* For all ruleset: */
+
+ /* If there is no connect rule preceding all send / expect rules, an
+ * implicit one is inserted before all others.
+ */
+ chk = get_first_tcpcheck_rule(&px->tcpcheck_rules);
+ if (!chk || chk->action != TCPCHK_ACT_CONNECT) {
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ ha_alert("proxy '%s': unable to add implicit tcp-check connect rule "
+ "(out of memory).\n", px->id);
+ ret |= ERR_ALERT | ERR_FATAL;
+ goto out;
+ }
+ chk->action = TCPCHK_ACT_CONNECT;
+ chk->connect.options = (TCPCHK_OPT_DEFAULT_CONNECT|TCPCHK_OPT_IMPLICIT);
+ LIST_INSERT(px->tcpcheck_rules.list, &chk->list);
+ }
+
+ /* Remove all comment rules. To do so, when a such rule is found, the
+ * comment is assigned to the following rule(s).
+ */
+ list_for_each_entry_safe(chk, back, px->tcpcheck_rules.list, list) {
+ struct tcpcheck_rule *next;
+
+ if (chk->action != prev_action && prev_action != TCPCHK_ACT_COMMENT)
+ ha_free(&comment);
+
+ prev_action = chk->action;
+ switch (chk->action) {
+ case TCPCHK_ACT_COMMENT:
+ free(comment);
+ comment = chk->comment;
+ LIST_DELETE(&chk->list);
+ free(chk);
+ break;
+ case TCPCHK_ACT_CONNECT:
+ if (!chk->comment && comment)
+ chk->comment = strdup(comment);
+ next = get_next_tcpcheck_rule(&px->tcpcheck_rules, chk);
+ if (next && next->action == TCPCHK_ACT_SEND)
+ chk->connect.options |= TCPCHK_OPT_HAS_DATA;
+ /* fall through */
+ case TCPCHK_ACT_ACTION_KW:
+ ha_free(&comment);
+ break;
+ case TCPCHK_ACT_SEND:
+ case TCPCHK_ACT_EXPECT:
+ if (!chk->comment && comment)
+ chk->comment = strdup(comment);
+ break;
+ }
+ }
+ ha_free(&comment);
+
+ out:
+ return ret;
+}
+
+void deinit_proxy_tcpcheck(struct proxy *px)
+{
+ free_tcpcheck_vars(&px->tcpcheck_rules.preset_vars);
+ px->tcpcheck_rules.flags = 0;
+ px->tcpcheck_rules.list = NULL;
+}
+
+static void deinit_tcpchecks()
+{
+ struct tcpcheck_ruleset *rs;
+ struct tcpcheck_rule *r, *rb;
+ struct ebpt_node *node, *next;
+
+ node = ebpt_first(&shared_tcpchecks);
+ while (node) {
+ next = ebpt_next(node);
+ ebpt_delete(node);
+ free(node->key);
+ rs = container_of(node, typeof(*rs), node);
+ list_for_each_entry_safe(r, rb, &rs->rules, list) {
+ LIST_DELETE(&r->list);
+ free_tcpcheck(r, 0);
+ }
+ free(rs);
+ node = next;
+ }
+}
+
+int add_tcpcheck_expect_str(struct tcpcheck_rules *rules, const char *str)
+{
+ struct tcpcheck_rule *tcpcheck, *prev_check;
+ struct tcpcheck_expect *expect;
+
+ if ((tcpcheck = pool_zalloc(pool_head_tcpcheck_rule)) == NULL)
+ return 0;
+ tcpcheck->action = TCPCHK_ACT_EXPECT;
+
+ expect = &tcpcheck->expect;
+ expect->type = TCPCHK_EXPECT_STRING;
+ LIST_INIT(&expect->onerror_fmt);
+ LIST_INIT(&expect->onsuccess_fmt);
+ expect->ok_status = HCHK_STATUS_L7OKD;
+ expect->err_status = HCHK_STATUS_L7RSP;
+ expect->tout_status = HCHK_STATUS_L7TOUT;
+ expect->data = ist(strdup(str));
+ if (!isttest(expect->data)) {
+ pool_free(pool_head_tcpcheck_rule, tcpcheck);
+ return 0;
+ }
+
+ /* All tcp-check expect points back to the first inverse expect rule
+ * in a chain of one or more expect rule, potentially itself.
+ */
+ tcpcheck->expect.head = tcpcheck;
+ list_for_each_entry_rev(prev_check, rules->list, list) {
+ if (prev_check->action == TCPCHK_ACT_EXPECT) {
+ if (prev_check->expect.flags & TCPCHK_EXPT_FL_INV)
+ tcpcheck->expect.head = prev_check;
+ continue;
+ }
+ if (prev_check->action != TCPCHK_ACT_COMMENT && prev_check->action != TCPCHK_ACT_ACTION_KW)
+ break;
+ }
+ LIST_APPEND(rules->list, &tcpcheck->list);
+ return 1;
+}
+
+int add_tcpcheck_send_strs(struct tcpcheck_rules *rules, const char * const *strs)
+{
+ struct tcpcheck_rule *tcpcheck;
+ struct tcpcheck_send *send;
+ const char *in;
+ char *dst;
+ int i;
+
+ if ((tcpcheck = pool_zalloc(pool_head_tcpcheck_rule)) == NULL)
+ return 0;
+ tcpcheck->action = TCPCHK_ACT_SEND;
+
+ send = &tcpcheck->send;
+ send->type = TCPCHK_SEND_STRING;
+
+ for (i = 0; strs[i]; i++)
+ send->data.len += strlen(strs[i]);
+
+ send->data.ptr = malloc(istlen(send->data) + 1);
+ if (!isttest(send->data)) {
+ pool_free(pool_head_tcpcheck_rule, tcpcheck);
+ return 0;
+ }
+
+ dst = istptr(send->data);
+ for (i = 0; strs[i]; i++)
+ for (in = strs[i]; (*dst = *in++); dst++);
+ *dst = 0;
+
+ LIST_APPEND(rules->list, &tcpcheck->list);
+ return 1;
+}
+
+/* Parses the "tcp-check" proxy keyword */
+static int proxy_parse_tcpcheck(char **args, int section, struct proxy *curpx,
+ const struct proxy *defpx, const char *file, int line,
+ char **errmsg)
+{
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rule *chk = NULL;
+ int index, cur_arg, ret = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[0], NULL))
+ ret = 1;
+
+ /* Deduce the ruleset name from the proxy info */
+ chunk_printf(&trash, "*tcp-check-%s_%s-%d",
+ ((curpx == defpx) ? "defaults" : curpx->id),
+ curpx->conf.file, curpx->conf.line);
+
+ rs = find_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ rs = create_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ memprintf(errmsg, "out of memory.\n");
+ goto error;
+ }
+ }
+
+ index = 0;
+ if (!LIST_ISEMPTY(&rs->rules)) {
+ chk = LIST_PREV(&rs->rules, typeof(chk), list);
+ index = chk->index + 1;
+ chk = NULL;
+ }
+
+ cur_arg = 1;
+ if (strcmp(args[cur_arg], "connect") == 0)
+ chk = parse_tcpcheck_connect(args, cur_arg, curpx, &rs->rules, file, line, errmsg);
+ else if (strcmp(args[cur_arg], "send") == 0 || strcmp(args[cur_arg], "send-binary") == 0 ||
+ strcmp(args[cur_arg], "send-lf") == 0 || strcmp(args[cur_arg], "send-binary-lf") == 0)
+ chk = parse_tcpcheck_send(args, cur_arg, curpx, &rs->rules, file, line, errmsg);
+ else if (strcmp(args[cur_arg], "expect") == 0)
+ chk = parse_tcpcheck_expect(args, cur_arg, curpx, &rs->rules, 0, file, line, errmsg);
+ else if (strcmp(args[cur_arg], "comment") == 0)
+ chk = parse_tcpcheck_comment(args, cur_arg, curpx, &rs->rules, file, line, errmsg);
+ else {
+ struct action_kw *kw = action_kw_tcp_check_lookup(args[cur_arg]);
+
+ if (!kw) {
+ action_kw_tcp_check_build_list(&trash);
+ memprintf(errmsg, "'%s' only supports 'comment', 'connect', 'send', 'send-binary', 'expect'"
+ "%s%s. but got '%s'",
+ args[0], (*trash.area ? ", " : ""), trash.area, args[1]);
+ goto error;
+ }
+ chk = parse_tcpcheck_action(args, cur_arg, curpx, &rs->rules, kw, file, line, errmsg);
+ }
+
+ if (!chk) {
+ memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg);
+ goto error;
+ }
+ ret = (ret || (*errmsg != NULL)); /* Handle warning */
+
+ /* No error: add the tcp-check rule in the list */
+ chk->index = index;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ if ((curpx->options2 & PR_O2_CHK_ANY) == PR_O2_TCPCHK_CHK &&
+ (curpx->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_TCP_CHK) {
+ /* Use this ruleset if the proxy already has tcp-check enabled */
+ curpx->tcpcheck_rules.list = &rs->rules;
+ curpx->tcpcheck_rules.flags &= ~TCPCHK_RULES_UNUSED_TCP_RS;
+ }
+ else {
+ /* mark this ruleset as unused for now */
+ curpx->tcpcheck_rules.flags |= TCPCHK_RULES_UNUSED_TCP_RS;
+ }
+
+ return ret;
+
+ error:
+ free_tcpcheck(chk, 0);
+ free_tcpcheck_ruleset(rs);
+ return -1;
+}
+
+/* Parses the "http-check" proxy keyword */
+static int proxy_parse_httpcheck(char **args, int section, struct proxy *curpx,
+ const struct proxy *defpx, const char *file, int line,
+ char **errmsg)
+{
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rule *chk = NULL;
+ int index, cur_arg, ret = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[0], NULL))
+ ret = 1;
+
+ cur_arg = 1;
+ if (strcmp(args[cur_arg], "disable-on-404") == 0) {
+ /* enable a graceful server shutdown on an HTTP 404 response */
+ curpx->options |= PR_O_DISABLE404;
+ if (too_many_args(1, args, errmsg, NULL))
+ goto error;
+ goto out;
+ }
+ else if (strcmp(args[cur_arg], "send-state") == 0) {
+ /* enable emission of the apparent state of a server in HTTP checks */
+ curpx->options2 |= PR_O2_CHK_SNDST;
+ if (too_many_args(1, args, errmsg, NULL))
+ goto error;
+ goto out;
+ }
+
+ /* Deduce the ruleset name from the proxy info */
+ chunk_printf(&trash, "*http-check-%s_%s-%d",
+ ((curpx == defpx) ? "defaults" : curpx->id),
+ curpx->conf.file, curpx->conf.line);
+
+ rs = find_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ rs = create_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ memprintf(errmsg, "out of memory.\n");
+ goto error;
+ }
+ }
+
+ index = 0;
+ if (!LIST_ISEMPTY(&rs->rules)) {
+ chk = LIST_PREV(&rs->rules, typeof(chk), list);
+ if (chk->action != TCPCHK_ACT_SEND || !(chk->send.http.flags & TCPCHK_SND_HTTP_FROM_OPT))
+ index = chk->index + 1;
+ chk = NULL;
+ }
+
+ if (strcmp(args[cur_arg], "connect") == 0)
+ chk = parse_tcpcheck_connect(args, cur_arg, curpx, &rs->rules, file, line, errmsg);
+ else if (strcmp(args[cur_arg], "send") == 0)
+ chk = parse_tcpcheck_send_http(args, cur_arg, curpx, &rs->rules, file, line, errmsg);
+ else if (strcmp(args[cur_arg], "expect") == 0)
+ chk = parse_tcpcheck_expect(args, cur_arg, curpx, &rs->rules, TCPCHK_RULES_HTTP_CHK,
+ file, line, errmsg);
+ else if (strcmp(args[cur_arg], "comment") == 0)
+ chk = parse_tcpcheck_comment(args, cur_arg, curpx, &rs->rules, file, line, errmsg);
+ else {
+ struct action_kw *kw = action_kw_tcp_check_lookup(args[cur_arg]);
+
+ if (!kw) {
+ action_kw_tcp_check_build_list(&trash);
+ memprintf(errmsg, "'%s' only supports 'disable-on-404', 'send-state', 'comment', 'connect',"
+ " 'send', 'expect'%s%s. but got '%s'",
+ args[0], (*trash.area ? ", " : ""), trash.area, args[1]);
+ goto error;
+ }
+ chk = parse_tcpcheck_action(args, cur_arg, curpx, &rs->rules, kw, file, line, errmsg);
+ }
+
+ if (!chk) {
+ memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg);
+ goto error;
+ }
+ ret = (*errmsg != NULL); /* Handle warning */
+
+ chk->index = index;
+ if ((curpx->options2 & PR_O2_CHK_ANY) == PR_O2_TCPCHK_CHK &&
+ (curpx->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_HTTP_CHK) {
+ /* Use this ruleset if the proxy already has http-check enabled */
+ curpx->tcpcheck_rules.list = &rs->rules;
+ curpx->tcpcheck_rules.flags &= ~TCPCHK_RULES_UNUSED_HTTP_RS;
+ if (!tcpcheck_add_http_rule(chk, &curpx->tcpcheck_rules, errmsg)) {
+ memprintf(errmsg, "'%s %s' : %s.", args[0], args[1], *errmsg);
+ curpx->tcpcheck_rules.list = NULL;
+ goto error;
+ }
+ }
+ else {
+ /* mark this ruleset as unused for now */
+ curpx->tcpcheck_rules.flags |= TCPCHK_RULES_UNUSED_HTTP_RS;
+ LIST_APPEND(&rs->rules, &chk->list);
+ }
+
+ out:
+ return ret;
+
+ error:
+ free_tcpcheck(chk, 0);
+ free_tcpcheck_ruleset(rs);
+ return -1;
+}
+
+/* Parses the "option redis-check" proxy keyword */
+int proxy_parse_redis_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ static char *redis_req = "*1\r\n$4\r\nPING\r\n";
+ static char *redis_res = "+PONG\r\n";
+
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ char *errmsg = NULL;
+ int err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags = 0;
+
+ rs = find_tcpcheck_ruleset("*redis-check");
+ if (rs)
+ goto ruleset_found;
+
+ rs = create_tcpcheck_ruleset("*redis-check");
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send", redis_req, ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 0;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "string", redis_res,
+ "error-status", "L7STS",
+ "on-error", "%[res.payload(0,0),cut_crlf]",
+ "on-success", "Redis server is ok",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_REDIS_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 1;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ ruleset_found:
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_REDIS_CHK;
+
+ out:
+ free(errmsg);
+ return err_code;
+
+ error:
+ free_tcpcheck_ruleset(rs);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+
+/* Parses the "option ssl-hello-chk" proxy keyword */
+int proxy_parse_ssl_hello_chk_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ /* This is the SSLv3 CLIENT HELLO packet used in conjunction with the
+ * ssl-hello-chk option to ensure that the remote server speaks SSL.
+ *
+ * Check RFC 2246 (TLSv1.0) sections A.3 and A.4 for details.
+ */
+ static char sslv3_client_hello[] = {
+ "16" /* ContentType : 0x16 = Handshake */
+ "0300" /* ProtocolVersion : 0x0300 = SSLv3 */
+ "0079" /* ContentLength : 0x79 bytes after this one */
+ "01" /* HanshakeType : 0x01 = CLIENT HELLO */
+ "000075" /* HandshakeLength : 0x75 bytes after this one */
+ "0300" /* Hello Version : 0x0300 = v3 */
+ "%[date(),htonl,hex]" /* Unix GMT Time (s) : filled with <now> (@0x0B) */
+ "%[str(HAPROXYSSLCHK\nHAPROXYSSLCHK\n),hex]" /* Random : must be exactly 28 bytes */
+ "00" /* Session ID length : empty (no session ID) */
+ "004E" /* Cipher Suite Length : 78 bytes after this one */
+ "0001" "0002" "0003" "0004" /* 39 most common ciphers : */
+ "0005" "0006" "0007" "0008" /* 0x01...0x1B, 0x2F...0x3A */
+ "0009" "000A" "000B" "000C" /* This covers RSA/DH, */
+ "000D" "000E" "000F" "0010" /* various bit lengths, */
+ "0011" "0012" "0013" "0014" /* SHA1/MD5, DES/3DES/AES... */
+ "0015" "0016" "0017" "0018"
+ "0019" "001A" "001B" "002F"
+ "0030" "0031" "0032" "0033"
+ "0034" "0035" "0036" "0037"
+ "0038" "0039" "003A"
+ "01" /* Compression Length : 0x01 = 1 byte for types */
+ "00" /* Compression Type : 0x00 = NULL compression */
+ };
+
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ char *errmsg = NULL;
+ int err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags = 0;
+
+ rs = find_tcpcheck_ruleset("*ssl-hello-check");
+ if (rs)
+ goto ruleset_found;
+
+ rs = create_tcpcheck_ruleset("*ssl-hello-check");
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary-lf", sslv3_client_hello, ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 0;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rbinary", "^1[56]",
+ "min-recv", "5", "ok-status", "L6OK",
+ "error-status", "L6RSP", "tout-status", "L6TOUT",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_SSL3_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 1;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ ruleset_found:
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_SSL3_CHK;
+
+ out:
+ free(errmsg);
+ return err_code;
+
+ error:
+ free_tcpcheck_ruleset(rs);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+/* Parses the "option smtpchk" proxy keyword */
+int proxy_parse_smtpchk_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ static char *smtp_req = "%[var(check.smtp_cmd)]\r\n";
+
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ struct tcpcheck_var *var = NULL;
+ char *cmd = NULL, *errmsg = NULL;
+ int err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(2, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags = 0;
+
+ cur_arg += 2;
+ if (*args[cur_arg] && *args[cur_arg+1] &&
+ (strcmp(args[cur_arg], "EHLO") == 0 || strcmp(args[cur_arg], "HELO") == 0)) {
+ /* <EHLO|HELO> + space (1) + <host> + null byte (1) */
+ cmd = calloc(strlen(args[cur_arg]) + 1 + strlen(args[cur_arg+1]) + 1, sizeof(*cmd));
+ if (cmd)
+ sprintf(cmd, "%s %s", args[cur_arg], args[cur_arg+1]);
+ }
+ else {
+ /* this just hits the default for now, but you could potentially expand it to allow for other stuff
+ though, it's unlikely you'd want to send anything other than an EHLO or HELO */
+ cmd = strdup("HELO localhost");
+ }
+
+ var = create_tcpcheck_var(ist("check.smtp_cmd"));
+ if (cmd == NULL || var == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ var->data.type = SMP_T_STR;
+ var->data.u.str.area = cmd;
+ var->data.u.str.data = strlen(cmd);
+ LIST_INIT(&var->list);
+ LIST_APPEND(&rules->preset_vars, &var->list);
+ cmd = NULL;
+ var = NULL;
+
+ rs = find_tcpcheck_ruleset("*smtp-check");
+ if (rs)
+ goto ruleset_found;
+
+ rs = create_tcpcheck_ruleset("*smtp-check");
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ chk = parse_tcpcheck_connect((char *[]){"tcp-check", "connect", "default", "linger", ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 0;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rstring", "^[0-9]{3}[ \r]",
+ "min-recv", "4",
+ "error-status", "L7RSP",
+ "on-error", "%[res.payload(0,0),cut_crlf]",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_SMTP_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 1;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rstring", "^2[0-9]{2}[ \r]",
+ "min-recv", "4",
+ "error-status", "L7STS",
+ "on-error", "%[res.payload(4,0),ltrim(' '),cut_crlf]",
+ "status-code", "res.payload(0,3)",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_SMTP_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 2;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-lf", smtp_req, ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 3;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rstring", "^(2[0-9]{2}-[^\r]*\r\n)*2[0-9]{2}[ \r]",
+ "error-status", "L7STS",
+ "on-error", "%[res.payload(4,0),ltrim(' '),cut_crlf]",
+ "on-success", "%[res.payload(4,0),ltrim(' '),cut_crlf]",
+ "status-code", "res.payload(0,3)",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_SMTP_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 4;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ /* Send an SMTP QUIT to ensure clean disconnect (issue 1812), and expect a 2xx response code */
+
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send", "QUIT\r\n", ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 5;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rstring", "^2[0-9]{2}[- \r]",
+ "min-recv", "4",
+ "error-status", "L7STS",
+ "on-error", "%[res.payload(4,0),ltrim(' '),cut_crlf]",
+ "on-success", "%[res.payload(4,0),ltrim(' '),cut_crlf]",
+ "status-code", "res.payload(0,3)",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_SMTP_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 6;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ ruleset_found:
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_SMTP_CHK;
+
+ out:
+ free(errmsg);
+ return err_code;
+
+ error:
+ free(cmd);
+ free(var);
+ free_tcpcheck_vars(&rules->preset_vars);
+ free_tcpcheck_ruleset(rs);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+/* Parses the "option pgsql-check" proxy keyword */
+int proxy_parse_pgsql_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ static char pgsql_req[] = {
+ "%[var(check.plen),htonl,hex]" /* The packet length*/
+ "00030000" /* the version 3.0 */
+ "7573657200" /* "user" key */
+ "%[var(check.username),hex]00" /* the username */
+ "00"
+ };
+
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ struct tcpcheck_var *var = NULL;
+ char *user = NULL, *errmsg = NULL;
+ size_t packetlen = 0;
+ int err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(2, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags = 0;
+
+ cur_arg += 2;
+ if (!*args[cur_arg] || !*args[cur_arg+1]) {
+ ha_alert("parsing [%s:%d] : '%s %s' expects 'user <username>' as argument.\n",
+ file, line, args[0], args[1]);
+ goto error;
+ }
+ if (strcmp(args[cur_arg], "user") == 0) {
+ packetlen = 15 + strlen(args[cur_arg+1]);
+ user = strdup(args[cur_arg+1]);
+
+ var = create_tcpcheck_var(ist("check.username"));
+ if (user == NULL || var == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ var->data.type = SMP_T_STR;
+ var->data.u.str.area = user;
+ var->data.u.str.data = strlen(user);
+ LIST_INIT(&var->list);
+ LIST_APPEND(&rules->preset_vars, &var->list);
+ user = NULL;
+ var = NULL;
+
+ var = create_tcpcheck_var(ist("check.plen"));
+ if (var == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ var->data.type = SMP_T_SINT;
+ var->data.u.sint = packetlen;
+ LIST_INIT(&var->list);
+ LIST_APPEND(&rules->preset_vars, &var->list);
+ var = NULL;
+ }
+ else {
+ ha_alert("parsing [%s:%d] : '%s %s' only supports optional values: 'user'.\n",
+ file, line, args[0], args[1]);
+ goto error;
+ }
+
+ rs = find_tcpcheck_ruleset("*pgsql-check");
+ if (rs)
+ goto ruleset_found;
+
+ rs = create_tcpcheck_ruleset("*pgsql-check");
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ chk = parse_tcpcheck_connect((char *[]){"tcp-check", "connect", "default", "linger", ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 0;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary-lf", pgsql_req, ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 1;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "!rstring", "^E",
+ "min-recv", "5",
+ "error-status", "L7RSP",
+ "on-error", "%[res.payload(6,0)]",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_PGSQL_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 2;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rbinary", "^52000000[A-Z0-9]{2}000000(00|02|03|04|05|06|07|09|0A)",
+ "min-recv", "9",
+ "error-status", "L7STS",
+ "on-success", "PostgreSQL server is ok",
+ "on-error", "PostgreSQL unknown error",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_PGSQL_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 3;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ ruleset_found:
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_PGSQL_CHK;
+
+ out:
+ free(errmsg);
+ return err_code;
+
+ error:
+ free(user);
+ free(var);
+ free_tcpcheck_vars(&rules->preset_vars);
+ free_tcpcheck_ruleset(rs);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+
+/* Parses the "option mysql-check" proxy keyword */
+int proxy_parse_mysql_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ /* This is an example of a MySQL >=4.0 client Authentication packet kindly provided by Cyril Bonte.
+ * const char mysql40_client_auth_pkt[] = {
+ * "\x0e\x00\x00" // packet length
+ * "\x01" // packet number
+ * "\x00\x00" // client capabilities
+ * "\x00\x00\x01" // max packet
+ * "haproxy\x00" // username (null terminated string)
+ * "\x00" // filler (always 0x00)
+ * "\x01\x00\x00" // packet length
+ * "\x00" // packet number
+ * "\x01" // COM_QUIT command
+ * };
+ */
+ static char mysql40_rsname[] = "*mysql40-check";
+ static char mysql40_req[] = {
+ "%[var(check.header),hex]" /* 3 bytes for the packet length and 1 byte for the sequence ID */
+ "0080" /* client capabilities */
+ "000001" /* max packet */
+ "%[var(check.username),hex]00" /* the username */
+ "00" /* filler (always 0x00) */
+ "010000" /* packet length*/
+ "00" /* sequence ID */
+ "01" /* COM_QUIT command */
+ };
+
+ /* This is an example of a MySQL >=4.1 client Authentication packet provided by Nenad Merdanovic.
+ * const char mysql41_client_auth_pkt[] = {
+ * "\x0e\x00\x00\" // packet length
+ * "\x01" // packet number
+ * "\x00\x00\x00\x00" // client capabilities
+ * "\x00\x00\x00\x01" // max packet
+ * "\x21" // character set (UTF-8)
+ * char[23] // All zeroes
+ * "haproxy\x00" // username (null terminated string)
+ * "\x00" // filler (always 0x00)
+ * "\x01\x00\x00" // packet length
+ * "\x00" // packet number
+ * "\x01" // COM_QUIT command
+ * };
+ */
+ static char mysql41_rsname[] = "*mysql41-check";
+ static char mysql41_req[] = {
+ "%[var(check.header),hex]" /* 3 bytes for the packet length and 1 byte for the sequence ID */
+ "00820000" /* client capabilities */
+ "00800001" /* max packet */
+ "21" /* character set (UTF-8) */
+ "000000000000000000000000" /* 23 bytes, al zeroes */
+ "0000000000000000000000"
+ "%[var(check.username),hex]00" /* the username */
+ "00" /* filler (always 0x00) */
+ "010000" /* packet length*/
+ "00" /* sequence ID */
+ "01" /* COM_QUIT command */
+ };
+
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ struct tcpcheck_var *var = NULL;
+ char *mysql_rsname = "*mysql-check";
+ char *mysql_req = NULL, *hdr = NULL, *user = NULL, *errmsg = NULL;
+ int index = 0, err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(3, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags = 0;
+
+ cur_arg += 2;
+ if (*args[cur_arg]) {
+ int packetlen, userlen;
+
+ if (strcmp(args[cur_arg], "user") != 0) {
+ ha_alert("parsing [%s:%d] : '%s %s' only supports optional values: 'user' (got '%s').\n",
+ file, line, args[0], args[1], args[cur_arg]);
+ goto error;
+ }
+
+ if (*(args[cur_arg+1]) == 0) {
+ ha_alert("parsing [%s:%d] : '%s %s %s' expects <username> as argument.\n",
+ file, line, args[0], args[1], args[cur_arg]);
+ goto error;
+ }
+
+ hdr = calloc(4, sizeof(*hdr));
+ user = strdup(args[cur_arg+1]);
+ userlen = strlen(args[cur_arg+1]);
+
+ if (hdr == NULL || user == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ if (!*args[cur_arg+2] || strcmp(args[cur_arg+2], "post-41") == 0) {
+ packetlen = userlen + 7 + 27;
+ mysql_req = mysql41_req;
+ mysql_rsname = mysql41_rsname;
+ }
+ else if (strcmp(args[cur_arg+2], "pre-41") == 0) {
+ packetlen = userlen + 7;
+ mysql_req = mysql40_req;
+ mysql_rsname = mysql40_rsname;
+ }
+ else {
+ ha_alert("parsing [%s:%d] : keyword '%s' only supports 'post-41' and 'pre-41' (got '%s').\n",
+ file, line, args[cur_arg], args[cur_arg+2]);
+ goto error;
+ }
+
+ hdr[0] = (unsigned char)(packetlen & 0xff);
+ hdr[1] = (unsigned char)((packetlen >> 8) & 0xff);
+ hdr[2] = (unsigned char)((packetlen >> 16) & 0xff);
+ hdr[3] = 1;
+
+ var = create_tcpcheck_var(ist("check.header"));
+ if (var == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ var->data.type = SMP_T_STR;
+ var->data.u.str.area = hdr;
+ var->data.u.str.data = 4;
+ LIST_INIT(&var->list);
+ LIST_APPEND(&rules->preset_vars, &var->list);
+ hdr = NULL;
+ var = NULL;
+
+ var = create_tcpcheck_var(ist("check.username"));
+ if (var == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ var->data.type = SMP_T_STR;
+ var->data.u.str.area = user;
+ var->data.u.str.data = strlen(user);
+ LIST_INIT(&var->list);
+ LIST_APPEND(&rules->preset_vars, &var->list);
+ user = NULL;
+ var = NULL;
+ }
+
+ rs = find_tcpcheck_ruleset(mysql_rsname);
+ if (rs)
+ goto ruleset_found;
+
+ rs = create_tcpcheck_ruleset(mysql_rsname);
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ chk = parse_tcpcheck_connect((char *[]){"tcp-check", "connect", "default", "linger", ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = index++;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ if (mysql_req) {
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary-lf", mysql_req, ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = index++;
+ LIST_APPEND(&rs->rules, &chk->list);
+ }
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_MYSQL_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->expect.custom = tcpcheck_mysql_expect_iniths;
+ chk->index = index++;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ if (mysql_req) {
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_MYSQL_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->expect.custom = tcpcheck_mysql_expect_ok;
+ chk->index = index++;
+ LIST_APPEND(&rs->rules, &chk->list);
+ }
+
+ ruleset_found:
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_MYSQL_CHK;
+
+ out:
+ free(errmsg);
+ return err_code;
+
+ error:
+ free(hdr);
+ free(user);
+ free(var);
+ free_tcpcheck_vars(&rules->preset_vars);
+ free_tcpcheck_ruleset(rs);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+int proxy_parse_ldap_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ static char *ldap_req = "300C020101600702010304008000";
+
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ char *errmsg = NULL;
+ int err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags = 0;
+
+ rs = find_tcpcheck_ruleset("*ldap-check");
+ if (rs)
+ goto ruleset_found;
+
+ rs = create_tcpcheck_ruleset("*ldap-check");
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary", ldap_req, ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 0;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "rbinary", "^30",
+ "min-recv", "14",
+ "on-error", "Not LDAPv3 protocol",
+ ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_LDAP_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 1;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_LDAP_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->expect.custom = tcpcheck_ldap_expect_bindrsp;
+ chk->index = 2;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ ruleset_found:
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_LDAP_CHK;
+
+ out:
+ free(errmsg);
+ return err_code;
+
+ error:
+ free_tcpcheck_ruleset(rs);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+int proxy_parse_spop_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ char *spop_req = NULL;
+ char *errmsg = NULL;
+ int spop_len = 0, err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags = 0;
+
+
+ rs = find_tcpcheck_ruleset("*spop-check");
+ if (rs)
+ goto ruleset_found;
+
+ rs = create_tcpcheck_ruleset("*spop-check");
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+
+ if (spoe_prepare_healthcheck_request(&spop_req, &spop_len) == -1) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ chunk_reset(&trash);
+ dump_binary(&trash, spop_req, spop_len);
+ trash.area[trash.data] = '\0';
+
+ chk = parse_tcpcheck_send((char *[]){"tcp-check", "send-binary", b_head(&trash), ""},
+ 1, curpx, &rs->rules, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->index = 0;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ chk = parse_tcpcheck_expect((char *[]){"tcp-check", "expect", "custom", "min-recv", "4", ""},
+ 1, curpx, &rs->rules, TCPCHK_RULES_SPOP_CHK, file, line, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : %s\n", file, line, errmsg);
+ goto error;
+ }
+ chk->expect.custom = tcpcheck_spop_expect_agenthello;
+ chk->index = 1;
+ LIST_APPEND(&rs->rules, &chk->list);
+
+ ruleset_found:
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_SPOP_CHK;
+
+ out:
+ free(spop_req);
+ free(errmsg);
+ return err_code;
+
+ error:
+ free_tcpcheck_ruleset(rs);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+
+static struct tcpcheck_rule *proxy_parse_httpchk_req(char **args, int cur_arg, struct proxy *px, char **errmsg)
+{
+ struct tcpcheck_rule *chk = NULL;
+ struct tcpcheck_http_hdr *hdr = NULL;
+ char *meth = NULL, *uri = NULL, *vsn = NULL;
+ char *hdrs, *body;
+
+ hdrs = (*args[cur_arg+2] ? strstr(args[cur_arg+2], "\r\n") : NULL);
+ body = (*args[cur_arg+2] ? strstr(args[cur_arg+2], "\r\n\r\n") : NULL);
+ if (hdrs == body)
+ hdrs = NULL;
+ if (hdrs) {
+ *hdrs = '\0';
+ hdrs +=2;
+ }
+ if (body) {
+ *body = '\0';
+ body += 4;
+ }
+ if (hdrs || body) {
+ memprintf(errmsg, "hiding headers or body at the end of the version string is deprecated."
+ " Please, consider to use 'http-check send' directive instead.");
+ }
+
+ chk = calloc(1, sizeof(*chk));
+ if (!chk) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ chk->action = TCPCHK_ACT_SEND;
+ chk->send.type = TCPCHK_SEND_HTTP;
+ chk->send.http.flags |= TCPCHK_SND_HTTP_FROM_OPT;
+ chk->send.http.meth.meth = HTTP_METH_OPTIONS;
+ LIST_INIT(&chk->send.http.hdrs);
+
+ /* Copy the method, uri and version */
+ if (*args[cur_arg]) {
+ if (!*args[cur_arg+1])
+ uri = args[cur_arg];
+ else
+ meth = args[cur_arg];
+ }
+ if (*args[cur_arg+1])
+ uri = args[cur_arg+1];
+ if (*args[cur_arg+2])
+ vsn = args[cur_arg+2];
+
+ if (meth) {
+ chk->send.http.meth.meth = find_http_meth(meth, strlen(meth));
+ chk->send.http.meth.str.area = strdup(meth);
+ chk->send.http.meth.str.data = strlen(meth);
+ if (!chk->send.http.meth.str.area) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ if (uri) {
+ chk->send.http.uri = ist(strdup(uri));
+ if (!isttest(chk->send.http.uri)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+ if (vsn) {
+ chk->send.http.vsn = ist(strdup(vsn));
+ if (!isttest(chk->send.http.vsn)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+
+ /* Copy the header */
+ if (hdrs) {
+ struct http_hdr tmp_hdrs[global.tune.max_http_hdr];
+ struct h1m h1m;
+ int i, ret;
+
+ /* Build and parse the request */
+ chunk_printf(&trash, "%s\r\n\r\n", hdrs);
+
+ h1m.flags = H1_MF_HDRS_ONLY;
+ ret = h1_headers_to_hdr_list(b_orig(&trash), b_tail(&trash),
+ tmp_hdrs, sizeof(tmp_hdrs)/sizeof(tmp_hdrs[0]),
+ &h1m, NULL);
+ if (ret <= 0) {
+ memprintf(errmsg, "unable to parse the request '%s'.", b_orig(&trash));
+ goto error;
+ }
+
+ for (i = 0; istlen(tmp_hdrs[i].n); i++) {
+ hdr = calloc(1, sizeof(*hdr));
+ if (!hdr) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ LIST_INIT(&hdr->value);
+ hdr->name = istdup(tmp_hdrs[i].n);
+ if (!isttest(hdr->name)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+
+ ist0(tmp_hdrs[i].v);
+ if (!parse_logformat_string(istptr(tmp_hdrs[i].v), px, &hdr->value, 0, SMP_VAL_BE_CHK_RUL, errmsg))
+ goto error;
+ LIST_APPEND(&chk->send.http.hdrs, &hdr->list);
+ }
+ }
+
+ /* Copy the body */
+ if (body) {
+ chk->send.http.body = ist(strdup(body));
+ if (!isttest(chk->send.http.body)) {
+ memprintf(errmsg, "out of memory");
+ goto error;
+ }
+ }
+
+ return chk;
+
+ error:
+ free_tcpcheck_http_hdr(hdr);
+ free_tcpcheck(chk, 0);
+ return NULL;
+}
+
+/* Parses the "option httpchck" proxy keyword */
+int proxy_parse_httpchk_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ struct tcpcheck_rule *chk;
+ char *errmsg = NULL;
+ int err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(3, 1, file, line, args, &err_code))
+ goto out;
+
+ chk = proxy_parse_httpchk_req(args, cur_arg+2, curpx, &errmsg);
+ if (!chk) {
+ ha_alert("parsing [%s:%d] : '%s %s' : %s.\n", file, line, args[0], args[1], errmsg);
+ goto error;
+ }
+ if (errmsg) {
+ ha_warning("parsing [%s:%d]: '%s %s' : %s\n", file, line, args[0], args[1], errmsg);
+ err_code |= ERR_WARN;
+ ha_free(&errmsg);
+ }
+
+ no_request:
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = NULL;
+ rules->flags |= TCPCHK_SND_HTTP_FROM_OPT;
+
+ /* Deduce the ruleset name from the proxy info */
+ chunk_printf(&trash, "*http-check-%s_%s-%d",
+ ((curpx == defpx) ? "defaults" : curpx->id),
+ curpx->conf.file, curpx->conf.line);
+
+ rs = find_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ rs = create_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ }
+
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_HTTP_CHK;
+ if (!tcpcheck_add_http_rule(chk, rules, &errmsg)) {
+ ha_alert("parsing [%s:%d] : '%s %s' : %s.\n", file, line, args[0], args[1], errmsg);
+ rules->list = NULL;
+ goto error;
+ }
+
+ out:
+ free(errmsg);
+ return err_code;
+
+ error:
+ free_tcpcheck_ruleset(rs);
+ free_tcpcheck(chk, 0);
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+/* Parses the "option tcp-check" proxy keyword */
+int proxy_parse_tcp_check_opt(char **args, int cur_arg, struct proxy *curpx, const struct proxy *defpx,
+ const char *file, int line)
+{
+ struct tcpcheck_ruleset *rs = NULL;
+ struct tcpcheck_rules *rules = &curpx->tcpcheck_rules;
+ int err_code = 0;
+
+ if (warnifnotcap(curpx, PR_CAP_BE, file, line, args[cur_arg+1], NULL))
+ err_code |= ERR_WARN;
+
+ if (alertif_too_many_args_idx(0, 1, file, line, args, &err_code))
+ goto out;
+
+ curpx->options2 &= ~PR_O2_CHK_ANY;
+ curpx->options2 |= PR_O2_TCPCHK_CHK;
+
+ if ((rules->flags & TCPCHK_RULES_PROTO_CHK) == TCPCHK_RULES_TCP_CHK) {
+ /* If a tcp-check rulesset is already set, do nothing */
+ if (rules->list)
+ goto out;
+
+ /* If a tcp-check ruleset is waiting to be used for the current proxy,
+ * get it.
+ */
+ if (rules->flags & TCPCHK_RULES_UNUSED_TCP_RS)
+ goto curpx_ruleset;
+
+ /* Otherwise, try to get the tcp-check ruleset of the default proxy */
+ chunk_printf(&trash, "*tcp-check-defaults_%s-%d", defpx->conf.file, defpx->conf.line);
+ rs = find_tcpcheck_ruleset(b_orig(&trash));
+ if (rs)
+ goto ruleset_found;
+ }
+
+ curpx_ruleset:
+ /* Deduce the ruleset name from the proxy info */
+ chunk_printf(&trash, "*tcp-check-%s_%s-%d",
+ ((curpx == defpx) ? "defaults" : curpx->id),
+ curpx->conf.file, curpx->conf.line);
+
+ rs = find_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ rs = create_tcpcheck_ruleset(b_orig(&trash));
+ if (rs == NULL) {
+ ha_alert("parsing [%s:%d] : out of memory.\n", file, line);
+ goto error;
+ }
+ }
+
+ ruleset_found:
+ free_tcpcheck_vars(&rules->preset_vars);
+ rules->list = &rs->rules;
+ rules->flags &= ~(TCPCHK_RULES_PROTO_CHK|TCPCHK_RULES_UNUSED_RS);
+ rules->flags |= TCPCHK_RULES_TCP_CHK;
+
+ out:
+ return err_code;
+
+ error:
+ err_code |= ERR_ALERT | ERR_FATAL;
+ goto out;
+}
+
+static struct cfg_kw_list cfg_kws = {ILH, {
+ { CFG_LISTEN, "http-check", proxy_parse_httpcheck },
+ { CFG_LISTEN, "tcp-check", proxy_parse_tcpcheck },
+ { 0, NULL, NULL },
+}};
+
+REGISTER_POST_PROXY_CHECK(check_proxy_tcpcheck);
+REGISTER_PROXY_DEINIT(deinit_proxy_tcpcheck);
+REGISTER_POST_DEINIT(deinit_tcpchecks);
+INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);