Adding upstream version 2.9.5.upstream/2.9.5

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 275 insertions, 0 deletions

diff --git a/src/cfgparse-tcp.c b/src/cfgparse-tcp.c
new file mode 100644
index 0000000..a4f6f29
--- /dev/null
+++ b/src/cfgparse-tcp.c
@@ -0,0 +1,275 @@
+/*
+ * Configuration parsing for TCP (bind and server keywords)
+ *
+ * Copyright 2000-2020 Willy Tarreau <w@1wt.eu>
+ *
+ * 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 <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <netinet/tcp.h>
+#include <netinet/in.h>
+
+#include <haproxy/api.h>
+#include <haproxy/arg.h>
+#include <haproxy/errors.h>
+#include <haproxy/list.h>
+#include <haproxy/listener.h>
+#include <haproxy/namespace.h>
+#include <haproxy/proxy-t.h>
+#include <haproxy/server.h>
+#include <haproxy/tools.h>
+
+
+#ifdef IPV6_V6ONLY
+/* parse the "v4v6" bind keyword */
+static int bind_parse_v4v6(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	conf->settings.options |= RX_O_V4V6;
+	return 0;
+}
+
+/* parse the "v6only" bind keyword */
+static int bind_parse_v6only(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	conf->settings.options |= RX_O_V6ONLY;
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_HAP_TRANSPARENT
+/* parse the "transparent" bind keyword */
+static int bind_parse_transparent(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	conf->settings.options |= RX_O_FOREIGN;
+	return 0;
+}
+#endif
+
+#if defined(TCP_DEFER_ACCEPT) || defined(SO_ACCEPTFILTER)
+/* parse the "defer-accept" bind keyword */
+static int bind_parse_defer_accept(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	conf->options |= BC_O_DEF_ACCEPT;
+	return 0;
+}
+#endif
+
+#ifdef TCP_FASTOPEN
+/* parse the "tfo" bind keyword */
+static int bind_parse_tfo(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	conf->options |= BC_O_TCP_FO;
+	return 0;
+}
+#endif
+
+#ifdef TCP_MAXSEG
+/* parse the "mss" bind keyword */
+static int bind_parse_mss(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	int mss;
+
+	if (!*args[cur_arg + 1]) {
+		memprintf(err, "'%s' : missing MSS value", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	mss = atoi(args[cur_arg + 1]);
+	if (!mss || abs(mss) > 65535) {
+		memprintf(err, "'%s' : expects an MSS with and absolute value between 1 and 65535", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	conf->maxseg = mss;
+	return 0;
+}
+#endif
+
+#ifdef TCP_USER_TIMEOUT
+/* parse the "tcp-ut" bind keyword */
+static int bind_parse_tcp_ut(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	const char *ptr = NULL;
+	unsigned int timeout;
+
+	if (!*args[cur_arg + 1]) {
+		memprintf(err, "'%s' : missing TCP User Timeout value", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	ptr = parse_time_err(args[cur_arg + 1], &timeout, TIME_UNIT_MS);
+	if (ptr == PARSE_TIME_OVER) {
+		memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
+			  args[cur_arg+1], args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+	else if (ptr == PARSE_TIME_UNDER) {
+		memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
+			  args[cur_arg+1], args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+	else if (ptr) {
+		memprintf(err, "'%s' : expects a positive delay in milliseconds", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	conf->tcp_ut = timeout;
+	return 0;
+}
+#endif
+
+#ifdef SO_BINDTODEVICE
+/* parse the "interface" bind keyword */
+static int bind_parse_interface(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	if (!*args[cur_arg + 1]) {
+		memprintf(err, "'%s' : missing interface name", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	ha_free(&conf->settings.interface);
+	conf->settings.interface = strdup(args[cur_arg + 1]);
+	return 0;
+}
+#endif
+
+#ifdef USE_NS
+/* parse the "namespace" bind keyword */
+static int bind_parse_namespace(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	char *namespace = NULL;
+
+	if (!*args[cur_arg + 1]) {
+		memprintf(err, "'%s' : missing namespace id", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+	namespace = args[cur_arg + 1];
+
+	conf->settings.netns = netns_store_lookup(namespace, strlen(namespace));
+
+	if (conf->settings.netns == NULL)
+		conf->settings.netns = netns_store_insert(namespace);
+
+	if (conf->settings.netns == NULL) {
+		ha_alert("Cannot open namespace '%s'.\n", args[cur_arg + 1]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+	return 0;
+}
+#endif
+
+#ifdef TCP_USER_TIMEOUT
+/* parse the "tcp-ut" server keyword */
+static int srv_parse_tcp_ut(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
+{
+	const char *ptr = NULL;
+	unsigned int timeout;
+
+	if (!*args[*cur_arg + 1]) {
+		memprintf(err, "'%s' : missing TCP User Timeout value", args[*cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	ptr = parse_time_err(args[*cur_arg + 1], &timeout, TIME_UNIT_MS);
+	if (ptr == PARSE_TIME_OVER) {
+		memprintf(err, "timer overflow in argument '%s' to '%s' (maximum value is 2147483647 ms or ~24.8 days)",
+			  args[*cur_arg+1], args[*cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+	else if (ptr == PARSE_TIME_UNDER) {
+		memprintf(err, "timer underflow in argument '%s' to '%s' (minimum non-null value is 1 ms)",
+			  args[*cur_arg+1], args[*cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+	else if (ptr) {
+		memprintf(err, "'%s' : expects a positive delay in milliseconds", args[*cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	if (newsrv->addr.ss_family == AF_INET || newsrv->addr.ss_family == AF_INET6)
+		newsrv->tcp_ut = timeout;
+
+	return 0;
+}
+#endif
+
+
+/************************************************************************/
+/*           All supported bind keywords must be declared here.         */
+/************************************************************************/
+
+/* Note: must not be declared <const> as its list will be overwritten.
+ * Please take care of keeping this list alphabetically sorted, doing so helps
+ * all code contributors.
+ * Optional keywords are also declared with a NULL ->parse() function so that
+ * the config parser can report an appropriate error when a known keyword was
+ * not enabled.
+ */
+static struct bind_kw_list bind_kws = { "TCP", { }, {
+#if defined(TCP_DEFER_ACCEPT) || defined(SO_ACCEPTFILTER)
+	{ "defer-accept",  bind_parse_defer_accept, 0 }, /* wait for some data for 1 second max before doing accept */
+#endif
+#ifdef SO_BINDTODEVICE
+	{ "interface",     bind_parse_interface,    1 }, /* specifically bind to this interface */
+#endif
+#ifdef TCP_MAXSEG
+	{ "mss",           bind_parse_mss,          1 }, /* set MSS of listening socket */
+#endif
+#ifdef TCP_USER_TIMEOUT
+	{ "tcp-ut",        bind_parse_tcp_ut,       1 }, /* set User Timeout on listening socket */
+#endif
+#ifdef TCP_FASTOPEN
+	{ "tfo",           bind_parse_tfo,          0 }, /* enable TCP_FASTOPEN of listening socket */
+#endif
+#ifdef CONFIG_HAP_TRANSPARENT
+	{ "transparent",   bind_parse_transparent,  0 }, /* transparently bind to the specified addresses */
+#endif
+#ifdef IPV6_V6ONLY
+	{ "v4v6",          bind_parse_v4v6,         0 }, /* force socket to bind to IPv4+IPv6 */
+	{ "v6only",        bind_parse_v6only,       0 }, /* force socket to bind to IPv6 only */
+#endif
+#ifdef USE_NS
+	{ "namespace",     bind_parse_namespace,    1 },
+#endif
+	/* the versions with the NULL parse function*/
+	{ "defer-accept",  NULL,  0 },
+	{ "interface",     NULL,  1 },
+	{ "mss",           NULL,  1 },
+	{ "transparent",   NULL,  0 },
+	{ "v4v6",          NULL,  0 },
+	{ "v6only",        NULL,  0 },
+	{ NULL, NULL, 0 },
+}};
+
+INITCALL1(STG_REGISTER, bind_register_keywords, &bind_kws);
+
+static struct srv_kw_list srv_kws = { "TCP", { }, {
+#ifdef TCP_USER_TIMEOUT
+	{ "tcp-ut",        srv_parse_tcp_ut,        1,  1,  0 }, /* set TCP user timeout on server */
+#endif
+	{ NULL, NULL, 0 },
+}};
+
+INITCALL1(STG_REGISTER, srv_register_keywords, &srv_kws);
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ * End:
+ */