From effc305cda9ae599b8598f23fd457c6f04c10628 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 13 Nov 2023 17:44:04 +0100 Subject: [PATCH] hostapd: add udebug support This is not activated by default and must be explicitly enabled via ubus It supports reporting log messages and netlink packets Signed-off-by: Felix Fietkau --- package/network/services/hostapd/Makefile | 4 +- .../network/services/hostapd/files/hostapd.uc | 25 +++ .../services/hostapd/files/wpa_supplicant.uc | 24 +++ .../hostapd/patches/601-ucode_support.patch | 142 ++++++++++++++++-- .../services/hostapd/src/src/ap/ucode.c | 1 + .../services/hostapd/src/src/utils/ucode.c | 117 +++++++++++++++ .../services/hostapd/src/src/utils/ucode.h | 1 + .../hostapd/src/wpa_supplicant/ucode.c | 1 + 8 files changed, 301 insertions(+), 14 deletions(-) diff --git a/package/network/services/hostapd/Makefile b/package/network/services/hostapd/Makefile index f46c6275ef..17f9dcb581 100644 --- a/package/network/services/hostapd/Makefile +++ b/package/network/services/hostapd/Makefile @@ -79,7 +79,7 @@ ifneq ($(CONFIG_DRIVER_11AX_SUPPORT),) HOSTAPD_IEEE80211AX:=y endif -CORE_DEPENDS = +ucode +libubus +libucode +ucode-mod-fs +ucode-mod-nl80211 +ucode-mod-rtnl +ucode-mod-ubus +ucode-mod-uloop +libblobmsg-json +CORE_DEPENDS = +ucode +libubus +libucode +ucode-mod-fs +ucode-mod-nl80211 +ucode-mod-rtnl +ucode-mod-ubus +ucode-mod-uloop +libblobmsg-json +libudebug OPENSSL_DEPENDS = +PACKAGE_$(1):libopenssl +PACKAGE_$(1):libopenssl-legacy DRIVER_MAKEOPTS= \ @@ -585,7 +585,7 @@ TARGET_CPPFLAGS := \ -D_GNU_SOURCE \ $(if $(CONFIG_WPA_MSG_MIN_PRIORITY),-DCONFIG_MSG_MIN_PRIORITY=$(CONFIG_WPA_MSG_MIN_PRIORITY)) -TARGET_LDFLAGS += -lubox -lubus -lblobmsg_json -lucode -lm -lnl-tiny +TARGET_LDFLAGS += -lubox -lubus -lblobmsg_json -lucode -lm -lnl-tiny -ludebug ifdef CONFIG_WPA_ENABLE_WEP DRIVER_MAKEOPTS += CONFIG_WEP=y diff --git a/package/network/services/hostapd/files/hostapd.uc b/package/network/services/hostapd/files/hostapd.uc index 750fd535a4..84138f29a5 100644 --- a/package/network/services/hostapd/files/hostapd.uc +++ b/package/network/services/hostapd/files/hostapd.uc @@ -782,8 +782,33 @@ let main_obj = { }, }; +function handle_debug_config(cfg) { + hostapd.printf(`handle_debug_config: ${cfg}\n`); + if (!cfg) + return; + + let data = cfg.service; + if (!data) + return; + + data = data.hostapd; + if (!data) + return; + + hostapd.udebug_set(!!+data.enabled); +} + hostapd.data.ubus = ubus; hostapd.data.obj = ubus.publish("hostapd", main_obj); +hostapd.data.debug_sub = ubus.subscriber((req) => { + if (req.type != "config") + return; + + handle_debug_config(req.data); +}); + +hostapd.data.debug_sub.subscribe("udebug"); +handle_debug_config(ubus.call("udebug", "get_config", {})); function bss_event(type, name, data) { let ubus = hostapd.data.ubus; diff --git a/package/network/services/hostapd/files/wpa_supplicant.uc b/package/network/services/hostapd/files/wpa_supplicant.uc index d624f27cdd..aac144b339 100644 --- a/package/network/services/hostapd/files/wpa_supplicant.uc +++ b/package/network/services/hostapd/files/wpa_supplicant.uc @@ -244,8 +244,32 @@ let main_obj = { }, }; +function handle_debug_config(cfg) { + if (!cfg) + return; + + let data = cfg.service; + if (!data) + return; + + data = data.wpa_supplicant; + if (!data) + return; + + wpas.udebug_set(!!+data.enabled); +} + wpas.data.ubus = ubus; wpas.data.obj = ubus.publish("wpa_supplicant", main_obj); +wpas.data.debug_sub = ubus.subscriber((req) => { + if (req.type != "config") + return; + + handle_debug_config(req.data); +}); + +wpas.data.debug_sub.subscribe("udebug"); +handle_debug_config(ubus.call("udebug", "get_config", {})); function iface_event(type, name, data) { let ubus = wpas.data.ubus; diff --git a/package/network/services/hostapd/patches/601-ucode_support.patch b/package/network/services/hostapd/patches/601-ucode_support.patch index 23f535b685..cfdb51f356 100644 --- a/package/network/services/hostapd/patches/601-ucode_support.patch +++ b/package/network/services/hostapd/patches/601-ucode_support.patch @@ -196,7 +196,7 @@ #ifdef CONFIG_BGSCAN if (state == WPA_COMPLETED && wpa_s->current_ssid != wpa_s->bgscan_ssid) -@@ -7596,6 +7597,7 @@ struct wpa_supplicant * wpa_supplicant_a +@@ -7594,6 +7595,7 @@ struct wpa_supplicant * wpa_supplicant_a #endif /* CONFIG_P2P */ wpas_ubus_add_bss(wpa_s); @@ -204,7 +204,7 @@ return wpa_s; } -@@ -7623,6 +7625,7 @@ int wpa_supplicant_remove_iface(struct w +@@ -7621,6 +7623,7 @@ int wpa_supplicant_remove_iface(struct w struct wpa_supplicant *parent = wpa_s->parent; #endif /* CONFIG_MESH */ @@ -212,7 +212,7 @@ wpas_ubus_free_bss(wpa_s); /* Remove interface from the global list of interfaces */ -@@ -7933,6 +7936,7 @@ struct wpa_global * wpa_supplicant_init( +@@ -7931,6 +7934,7 @@ struct wpa_global * wpa_supplicant_init( eloop_register_timeout(WPA_SUPPLICANT_CLEANUP_INTERVAL, 0, wpas_periodic, global, NULL); @@ -220,7 +220,7 @@ return global; } -@@ -7971,12 +7975,8 @@ int wpa_supplicant_run(struct wpa_global +@@ -7969,12 +7973,8 @@ int wpa_supplicant_run(struct wpa_global eloop_register_signal_terminate(wpa_supplicant_terminate, global); eloop_register_signal_reconfig(wpa_supplicant_reconfig, global); @@ -233,7 +233,7 @@ return 0; } -@@ -8009,6 +8009,8 @@ void wpa_supplicant_deinit(struct wpa_gl +@@ -8007,6 +8007,8 @@ void wpa_supplicant_deinit(struct wpa_gl wpas_notify_supplicant_deinitialized(global); @@ -395,7 +395,60 @@ { --- a/src/drivers/driver_nl80211.c +++ b/src/drivers/driver_nl80211.c -@@ -1333,7 +1333,7 @@ static void wpa_driver_nl80211_event_rtm +@@ -73,6 +73,16 @@ enum nlmsgerr_attrs { + + #endif /* ANDROID */ + ++static void handle_nl_debug_hook(struct nl_msg *msg, int tx) ++{ ++ const struct nlmsghdr *nlh; ++ ++ if (!wpa_netlink_hook) ++ return; ++ ++ nlh = nlmsg_hdr(msg); ++ wpa_netlink_hook(tx, nlh, nlh->nlmsg_len); ++} + + static struct nl_sock * nl_create_handle(struct nl_cb *cb, const char *dbg) + { +@@ -379,6 +389,11 @@ static int no_seq_check(struct nl_msg *m + return NL_OK; + } + ++static int debug_handler(struct nl_msg *msg, void *arg) ++{ ++ handle_nl_debug_hook(msg, 0); ++ return NL_OK; ++} + + static void nl80211_nlmsg_clear(struct nl_msg *msg) + { +@@ -415,6 +430,7 @@ static int send_and_recv(struct nl80211_ + if (!msg) + return -ENOMEM; + ++ handle_nl_debug_hook(msg, 1); + cb = nl_cb_clone(global->nl_cb); + if (!cb) + goto out; +@@ -443,6 +459,7 @@ static int send_and_recv(struct nl80211_ + + err = 1; + ++ nl_cb_set(cb, NL_CB_MSG_IN, NL_CB_CUSTOM, debug_handler, NULL); + nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); + nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); + if (ack_handler_custom) { +@@ -919,6 +936,7 @@ nl80211_get_wiphy_data_ap(struct i802_bs + os_free(w); + return NULL; + } ++ nl_cb_set(w->nl_cb, NL_CB_MSG_IN, NL_CB_CUSTOM, debug_handler, NULL); + nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, + no_seq_check, NULL); + nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, +@@ -1333,7 +1351,7 @@ static void wpa_driver_nl80211_event_rtm } wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)", namebuf, ifname); @@ -404,7 +457,7 @@ wpa_printf(MSG_DEBUG, "nl80211: Not the main interface (%s) - do not indicate interface down", drv->first_bss->ifname); -@@ -1369,7 +1369,7 @@ static void wpa_driver_nl80211_event_rtm +@@ -1369,7 +1387,7 @@ static void wpa_driver_nl80211_event_rtm } wpa_printf(MSG_DEBUG, "nl80211: Interface up (%s/%s)", namebuf, ifname); @@ -413,7 +466,23 @@ wpa_printf(MSG_DEBUG, "nl80211: Not the main interface (%s) - do not indicate interface up", drv->first_bss->ifname); -@@ -8432,6 +8432,7 @@ static void *i802_init(struct hostapd_da +@@ -1992,6 +2010,7 @@ static int wpa_driver_nl80211_init_nl_gl + /* Continue without vendor events */ + } + ++ nl_cb_set(global->nl_cb, NL_CB_MSG_IN, NL_CB_CUSTOM, debug_handler, NULL); + nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, + no_seq_check, NULL); + nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, +@@ -2160,6 +2179,7 @@ static int nl80211_init_bss(struct i802_ + if (!bss->nl_cb) + return -1; + ++ nl_cb_set(bss->nl_cb, NL_CB_MSG_IN, NL_CB_CUSTOM, debug_handler, NULL); + nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, + no_seq_check, NULL); + nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, +@@ -8432,6 +8452,7 @@ static void *i802_init(struct hostapd_da char master_ifname[IFNAMSIZ]; int ifindex, br_ifindex = 0; int br_added = 0; @@ -421,7 +490,7 @@ bss = wpa_driver_nl80211_drv_init(hapd, params->ifname, params->global_priv, 1, -@@ -8491,21 +8492,17 @@ static void *i802_init(struct hostapd_da +@@ -8491,21 +8512,17 @@ static void *i802_init(struct hostapd_da (params->num_bridge == 0 || !params->bridge[0])) add_ifidx(drv, br_ifindex, drv->ifindex); @@ -453,7 +522,7 @@ } if (drv->capa.flags2 & WPA_DRIVER_FLAGS2_CONTROL_PORT_RX) { -@@ -8875,6 +8872,50 @@ static int wpa_driver_nl80211_if_remove( +@@ -8875,6 +8892,50 @@ static int wpa_driver_nl80211_if_remove( return 0; } @@ -504,7 +573,7 @@ static int cookie_handler(struct nl_msg *msg, void *arg) { -@@ -10513,6 +10554,37 @@ static int driver_nl80211_if_remove(void +@@ -10513,6 +10574,37 @@ static int driver_nl80211_if_remove(void } @@ -542,7 +611,7 @@ static int driver_nl80211_send_mlme(void *priv, const u8 *data, size_t data_len, int noack, unsigned int freq, -@@ -13697,6 +13769,8 @@ const struct wpa_driver_ops wpa_driver_n +@@ -13697,6 +13789,8 @@ const struct wpa_driver_ops wpa_driver_n .set_acl = wpa_driver_nl80211_set_acl, .if_add = wpa_driver_nl80211_if_add, .if_remove = driver_nl80211_if_remove, @@ -551,3 +620,52 @@ .send_mlme = driver_nl80211_send_mlme, .get_hw_feature_data = nl80211_get_hw_feature_data, .sta_add = wpa_driver_nl80211_sta_add, +--- a/src/utils/wpa_debug.c ++++ b/src/utils/wpa_debug.c +@@ -26,6 +26,10 @@ static FILE *wpa_debug_tracing_file = NU + #define WPAS_TRACE_PFX "wpas <%d>: " + #endif /* CONFIG_DEBUG_LINUX_TRACING */ + ++void (*wpa_printf_hook)(int level, const char *fmt, va_list ap); ++void (*wpa_hexdump_hook)(int level, const char *title, const void *buf, ++ size_t len); ++void (*wpa_netlink_hook)(int tx, const void *data, size_t len); + + int wpa_debug_level = MSG_INFO; + int wpa_debug_show_keys = 0; +@@ -210,6 +214,12 @@ void _wpa_printf(int level, const char * + { + va_list ap; + ++ if (wpa_printf_hook) { ++ va_start(ap, fmt); ++ wpa_printf_hook(level, fmt, ap); ++ va_end(ap); ++ } ++ + if (level >= wpa_debug_level) { + #ifdef CONFIG_ANDROID_LOG + va_start(ap, fmt); +@@ -260,6 +270,9 @@ void _wpa_hexdump(int level, const char + { + size_t i; + ++ if (wpa_hexdump_hook) ++ wpa_hexdump_hook(level, title, buf, len); ++ + #ifdef CONFIG_DEBUG_LINUX_TRACING + if (wpa_debug_tracing_file != NULL) { + fprintf(wpa_debug_tracing_file, +--- a/src/utils/wpa_debug.h ++++ b/src/utils/wpa_debug.h +@@ -11,6 +11,10 @@ + + #include "wpabuf.h" + ++extern void (*wpa_printf_hook)(int level, const char *fmt, va_list ap); ++extern void (*wpa_hexdump_hook)(int level, const char *title, ++ const void *buf, size_t len); ++extern void (*wpa_netlink_hook)(int tx, const void *data, size_t len); + extern int wpa_debug_level; + extern int wpa_debug_show_keys; + extern int wpa_debug_timestamp; diff --git a/package/network/services/hostapd/src/src/ap/ucode.c b/package/network/services/hostapd/src/src/ap/ucode.c index af97091be5..16d1b51536 100644 --- a/package/network/services/hostapd/src/src/ap/ucode.c +++ b/package/network/services/hostapd/src/src/ap/ucode.c @@ -711,6 +711,7 @@ int hostapd_ucode_init(struct hapd_interfaces *ifaces) { "freq_info", uc_wpa_freq_info }, { "add_iface", uc_hostapd_add_iface }, { "remove_iface", uc_hostapd_remove_iface }, + { "udebug_set", uc_wpa_udebug_set }, }; static const uc_function_list_t bss_fns[] = { { "ctrl", uc_hostapd_bss_ctrl }, diff --git a/package/network/services/hostapd/src/src/utils/ucode.c b/package/network/services/hostapd/src/src/utils/ucode.c index 2beeb9a7ff..14fd6bc5ec 100644 --- a/package/network/services/hostapd/src/src/utils/ucode.c +++ b/package/network/services/hostapd/src/src/utils/ucode.c @@ -4,12 +4,20 @@ #include "crypto/crypto.h" #include "crypto/sha1.h" #include "common/ieee802_11_common.h" +#include +#include +#include #include #include +#include static uc_value_t *registry; static uc_vm_t vm; static struct uloop_timeout gc_timer; +static struct udebug ud; +static struct udebug_buf ud_log, ud_nl[3]; + +#define UDEBUG_FLAG_RX_FRAME (1ULL << 0) static void uc_gc_timer(struct uloop_timeout *timeout) { @@ -251,6 +259,115 @@ int wpa_ucode_call_prepare(const char *fname) return 0; } +static void udebug_printf_hook(int level, const char *fmt, va_list ap) +{ + udebug_entry_init(&ud_log); + udebug_entry_vprintf(&ud_log, fmt, ap); + udebug_entry_add(&ud_log); +} + +static void udebug_hexdump_hook(int level, const char *title, + const void *data, size_t len) +{ + char *buf; + + udebug_entry_init(&ud_log); + udebug_entry_printf(&ud_log, "%s - hexdump:", title); + buf = udebug_entry_append(&ud_log, NULL, 3 * len); + for (size_t i = 0; i < len; i++) + buf += sprintf(buf, " %02x", *(uint8_t *)(data + i)); + udebug_entry_add(&ud_log); +} + +static void udebug_netlink_hook(int tx, const void *data, size_t len) +{ + struct { + uint16_t pkttype; + uint16_t arphdr; + uint16_t _pad[5]; + uint16_t proto; + } hdr = { + .pkttype = host_to_be16(tx ? 7 : 6), + .arphdr = host_to_be16(824), + .proto = host_to_be16(16), + }; + const struct nlmsghdr *nlh = data; + const struct genlmsghdr *gnlh = data + NLMSG_HDRLEN; + struct udebug_buf *buf = &ud_nl[!!tx]; + + if (nlh->nlmsg_type == 0x10) + buf = &ud_nl[2]; + else if (!tx && gnlh->cmd == NL80211_CMD_FRAME && + !(udebug_buf_flags(buf) & UDEBUG_FLAG_RX_FRAME)) + return; + + udebug_entry_init(buf); + udebug_entry_append(buf, &hdr, sizeof(hdr)); + udebug_entry_append(buf, data, len); + udebug_entry_add(buf); +} + +uc_value_t *uc_wpa_udebug_set(uc_vm_t *vm, size_t nargs) +{ + static const struct udebug_buf_meta meta_log = { + .name = "wpa_log", + .format = UDEBUG_FORMAT_STRING, + }; + static const struct udebug_buf_meta meta_nl_ll = { + .name = "wpa_nl_ctrl", + .format = UDEBUG_FORMAT_PACKET, + .sub_format = UDEBUG_DLT_NETLINK, + }; + static const struct udebug_buf_meta meta_nl_tx = { + .name = "wpa_nl_tx", + .format = UDEBUG_FORMAT_PACKET, + .sub_format = UDEBUG_DLT_NETLINK, + }; + static const struct udebug_buf_flag rx_flags[] = { + { "rx_frame", UDEBUG_FLAG_RX_FRAME }, + }; + static const struct udebug_buf_meta meta_nl_rx = { + .name = "wpa_nl_rx", + .format = UDEBUG_FORMAT_PACKET, + .sub_format = UDEBUG_DLT_NETLINK, + .flags = rx_flags, + .n_flags = ARRAY_SIZE(rx_flags), + }; + bool val = ucv_is_truish(uc_fn_arg(0)); + static bool enabled = false; + + if (enabled == val) + return ucv_boolean_new(true); + + enabled = val; + if (val) { + udebug_init(&ud); + udebug_auto_connect(&ud, NULL); + udebug_buf_init(&ud_log, 1024, 64 * 1024); + udebug_buf_add(&ud, &ud_log, &meta_log); + udebug_buf_init(&ud_nl[0], 1024, 256 * 1024); + udebug_buf_add(&ud, &ud_nl[0], &meta_nl_rx); + udebug_buf_init(&ud_nl[1], 1024, 64 * 1024); + udebug_buf_add(&ud, &ud_nl[1], &meta_nl_tx); + udebug_buf_init(&ud_nl[2], 256, 32 * 1024); + udebug_buf_add(&ud, &ud_nl[2], &meta_nl_ll); + + wpa_printf_hook = udebug_printf_hook; + wpa_hexdump_hook = udebug_hexdump_hook; + wpa_netlink_hook = udebug_netlink_hook; + } else { + for (size_t i = 0; i < ARRAY_SIZE(ud_nl); i++) + udebug_buf_free(&ud_nl[i]); + udebug_buf_free(&ud_log); + udebug_free(&ud); + wpa_printf_hook = NULL; + wpa_hexdump_hook = NULL; + wpa_netlink_hook = NULL; + } + + return ucv_boolean_new(true); +} + uc_value_t *wpa_ucode_global_init(const char *name, uc_resource_type_t *global_type) { uc_value_t *global = uc_resource_new(global_type, NULL); diff --git a/package/network/services/hostapd/src/src/utils/ucode.h b/package/network/services/hostapd/src/src/utils/ucode.h index 2c1886976e..c083241e07 100644 --- a/package/network/services/hostapd/src/src/utils/ucode.h +++ b/package/network/services/hostapd/src/src/utils/ucode.h @@ -21,6 +21,7 @@ int wpa_ucode_registry_add(uc_value_t *reg, uc_value_t *val); uc_value_t *wpa_ucode_registry_get(uc_value_t *reg, int idx); uc_value_t *wpa_ucode_registry_remove(uc_value_t *reg, int idx); +uc_value_t *uc_wpa_udebug_set(uc_vm_t *vm, size_t nargs); uc_value_t *uc_wpa_printf(uc_vm_t *vm, size_t nargs); uc_value_t *uc_wpa_getpid(uc_vm_t *vm, size_t nargs); uc_value_t *uc_wpa_sha1(uc_vm_t *vm, size_t nargs); diff --git a/package/network/services/hostapd/src/wpa_supplicant/ucode.c b/package/network/services/hostapd/src/wpa_supplicant/ucode.c index 6cba73dcd5..397f85bde7 100644 --- a/package/network/services/hostapd/src/wpa_supplicant/ucode.c +++ b/package/network/services/hostapd/src/wpa_supplicant/ucode.c @@ -262,6 +262,7 @@ int wpas_ucode_init(struct wpa_global *gl) { "getpid", uc_wpa_getpid }, { "add_iface", uc_wpas_add_iface }, { "remove_iface", uc_wpas_remove_iface }, + { "udebug_set", uc_wpa_udebug_set }, }; static const uc_function_list_t iface_fns[] = { { "status", uc_wpas_iface_status }, -- 2.30.2