ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/hostapd/radius.c b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/hostapd/radius.c
new file mode 100644
index 0000000..362a22c
--- /dev/null
+++ b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/hostapd/radius.c
@@ -0,0 +1,715 @@
+#include "utils/includes.h"
+#include "utils/common.h"
+#include "utils/eloop.h"
+#include "crypto/crypto.h"
+#include "crypto/tls.h"
+
+#include "ap/ap_config.h"
+#include "eap_server/eap.h"
+#include "radius/radius.h"
+#include "radius/radius_server.h"
+#include "eap_register.h"
+
+#include <libubox/blobmsg_json.h>
+#include <libubox/blobmsg.h>
+#include <libubox/avl.h>
+#include <libubox/avl-cmp.h>
+#include <libubox/kvlist.h>
+
+#include <sys/stat.h>
+#include <fnmatch.h>
+
+#define VENDOR_ID_WISPR 14122
+#define VENDOR_ATTR_SIZE 6
+
+struct radius_parse_attr_data {
+ unsigned int vendor;
+ u8 type;
+ int size;
+ char format;
+ const char *data;
+};
+
+struct radius_parse_attr_state {
+ struct hostapd_radius_attr *prev;
+ struct hostapd_radius_attr *attr;
+ struct wpabuf *buf;
+ void *attrdata;
+};
+
+struct radius_user_state {
+ struct avl_node node;
+ struct eap_user data;
+};
+
+struct radius_user_data {
+ struct kvlist users;
+ struct avl_tree user_state;
+ struct blob_attr *wildcard;
+};
+
+struct radius_state {
+ struct radius_server_data *radius;
+ struct eap_config eap;
+
+ struct radius_user_data phase1, phase2;
+ const char *user_file;
+ time_t user_file_ts;
+
+ int n_attrs;
+ struct hostapd_radius_attr *attrs;
+};
+
+struct radius_config {
+ struct tls_connection_params tls;
+ struct radius_server_conf radius;
+};
+
+enum {
+ USER_ATTR_PASSWORD,
+ USER_ATTR_HASH,
+ USER_ATTR_SALT,
+ USER_ATTR_METHODS,
+ USER_ATTR_RADIUS,
+ USER_ATTR_VLAN,
+ USER_ATTR_MAX_RATE_UP,
+ USER_ATTR_MAX_RATE_DOWN,
+ __USER_ATTR_MAX
+};
+
+static void radius_tls_event(void *ctx, enum tls_event ev,
+ union tls_event_data *data)
+{
+ switch (ev) {
+ case TLS_CERT_CHAIN_SUCCESS:
+ wpa_printf(MSG_DEBUG, "radius: remote certificate verification success");
+ break;
+ case TLS_CERT_CHAIN_FAILURE:
+ wpa_printf(MSG_INFO, "radius: certificate chain failure: reason=%d depth=%d subject='%s' err='%s'",
+ data->cert_fail.reason,
+ data->cert_fail.depth,
+ data->cert_fail.subject,
+ data->cert_fail.reason_txt);
+ break;
+ case TLS_PEER_CERTIFICATE:
+ wpa_printf(MSG_DEBUG, "radius: peer certificate: depth=%d serial_num=%s subject=%s",
+ data->peer_cert.depth,
+ data->peer_cert.serial_num ? data->peer_cert.serial_num : "N/A",
+ data->peer_cert.subject);
+ break;
+ case TLS_ALERT:
+ if (data->alert.is_local)
+ wpa_printf(MSG_DEBUG, "radius: local TLS alert: %s",
+ data->alert.description);
+ else
+ wpa_printf(MSG_DEBUG, "radius: remote TLS alert: %s",
+ data->alert.description);
+ break;
+ case TLS_UNSAFE_RENEGOTIATION_DISABLED:
+ /* Not applicable to TLS server */
+ break;
+ }
+}
+
+static void radius_userdata_init(struct radius_user_data *u)
+{
+ kvlist_init(&u->users, kvlist_blob_len);
+ avl_init(&u->user_state, avl_strcmp, false, NULL);
+}
+
+static void radius_userdata_free(struct radius_user_data *u)
+{
+ struct radius_user_state *s, *tmp;
+
+ kvlist_free(&u->users);
+ free(u->wildcard);
+ u->wildcard = NULL;
+ avl_remove_all_elements(&u->user_state, s, node, tmp)
+ free(s);
+}
+
+static void
+radius_userdata_load(struct radius_user_data *u, struct blob_attr *data)
+{
+ enum {
+ USERSTATE_USERS,
+ USERSTATE_WILDCARD,
+ __USERSTATE_MAX,
+ };
+ static const struct blobmsg_policy policy[__USERSTATE_MAX] = {
+ [USERSTATE_USERS] = { "users", BLOBMSG_TYPE_TABLE },
+ [USERSTATE_WILDCARD] = { "wildcard", BLOBMSG_TYPE_ARRAY },
+ };
+ struct blob_attr *tb[__USERSTATE_MAX], *cur;
+ int rem;
+
+ if (!data)
+ return;
+
+ blobmsg_parse(policy, __USERSTATE_MAX, tb, blobmsg_data(data), blobmsg_len(data));
+
+ blobmsg_for_each_attr(cur, tb[USERSTATE_USERS], rem)
+ kvlist_set(&u->users, blobmsg_name(cur), cur);
+
+ if (tb[USERSTATE_WILDCARD])
+ u->wildcard = blob_memdup(tb[USERSTATE_WILDCARD]);
+}
+
+static void
+load_userfile(struct radius_state *s)
+{
+ enum {
+ USERDATA_PHASE1,
+ USERDATA_PHASE2,
+ __USERDATA_MAX
+ };
+ static const struct blobmsg_policy policy[__USERDATA_MAX] = {
+ [USERDATA_PHASE1] = { "phase1", BLOBMSG_TYPE_TABLE },
+ [USERDATA_PHASE2] = { "phase2", BLOBMSG_TYPE_TABLE },
+ };
+ struct blob_attr *tb[__USERDATA_MAX], *cur;
+ static struct blob_buf b;
+ struct stat st;
+ int rem;
+
+ if (stat(s->user_file, &st))
+ return;
+
+ if (s->user_file_ts == st.st_mtime)
+ return;
+
+ s->user_file_ts = st.st_mtime;
+ radius_userdata_free(&s->phase1);
+ radius_userdata_free(&s->phase2);
+
+ blob_buf_init(&b, 0);
+ blobmsg_add_json_from_file(&b, s->user_file);
+ blobmsg_parse(policy, __USERDATA_MAX, tb, blob_data(b.head), blob_len(b.head));
+ radius_userdata_load(&s->phase1, tb[USERDATA_PHASE1]);
+ radius_userdata_load(&s->phase2, tb[USERDATA_PHASE2]);
+
+ blob_buf_free(&b);
+}
+
+static struct blob_attr *
+radius_user_get(struct radius_user_data *s, const char *name)
+{
+ struct blob_attr *cur;
+ int rem;
+
+ cur = kvlist_get(&s->users, name);
+ if (cur)
+ return cur;
+
+ blobmsg_for_each_attr(cur, s->wildcard, rem) {
+ static const struct blobmsg_policy policy = {
+ "name", BLOBMSG_TYPE_STRING
+ };
+ struct blob_attr *pattern;
+
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_TABLE)
+ continue;
+
+ blobmsg_parse(&policy, 1, &pattern, blobmsg_data(cur), blobmsg_len(cur));
+ if (!name)
+ continue;
+
+ if (!fnmatch(blobmsg_get_string(pattern), name, 0))
+ return cur;
+ }
+
+ return NULL;
+}
+
+static struct radius_parse_attr_data *
+radius_parse_attr(struct blob_attr *attr)
+{
+ static const struct blobmsg_policy policy[4] = {
+ { .type = BLOBMSG_TYPE_INT32 },
+ { .type = BLOBMSG_TYPE_INT32 },
+ { .type = BLOBMSG_TYPE_STRING },
+ { .type = BLOBMSG_TYPE_STRING },
+ };
+ static struct radius_parse_attr_data data;
+ struct blob_attr *tb[4];
+ const char *format;
+
+ blobmsg_parse_array(policy, ARRAY_SIZE(policy), tb, blobmsg_data(attr), blobmsg_len(attr));
+
+ if (!tb[0] || !tb[1] || !tb[2] || !tb[3])
+ return NULL;
+
+ format = blobmsg_get_string(tb[2]);
+ if (strlen(format) != 1)
+ return NULL;
+
+ data.vendor = blobmsg_get_u32(tb[0]);
+ data.type = blobmsg_get_u32(tb[1]);
+ data.format = format[0];
+ data.data = blobmsg_get_string(tb[3]);
+ data.size = strlen(data.data);
+
+ switch (data.format) {
+ case 's':
+ break;
+ case 'x':
+ if (data.size & 1)
+ return NULL;
+ data.size /= 2;
+ break;
+ case 'd':
+ data.size = 4;
+ break;
+ default:
+ return NULL;
+ }
+
+ return &data;
+}
+
+static void
+radius_count_attrs(struct blob_attr **tb, int *n_attr, size_t *attr_size)
+{
+ struct blob_attr *data = tb[USER_ATTR_RADIUS];
+ struct blob_attr *cur;
+ int rem;
+
+ blobmsg_for_each_attr(cur, data, rem) {
+ struct radius_parse_attr_data *data;
+ size_t prev = *attr_size;
+
+ data = radius_parse_attr(cur);
+ if (!data)
+ continue;
+
+ *attr_size += data->size;
+ if (data->vendor)
+ *attr_size += VENDOR_ATTR_SIZE;
+
+ (*n_attr)++;
+ }
+
+ *n_attr += !!tb[USER_ATTR_VLAN] * 3 +
+ !!tb[USER_ATTR_MAX_RATE_UP] +
+ !!tb[USER_ATTR_MAX_RATE_DOWN];
+ *attr_size += !!tb[USER_ATTR_VLAN] * (4 + 4 + 5) +
+ !!tb[USER_ATTR_MAX_RATE_UP] * (4 + VENDOR_ATTR_SIZE) +
+ !!tb[USER_ATTR_MAX_RATE_DOWN] * (4 + VENDOR_ATTR_SIZE);
+}
+
+static void *
+radius_add_attr(struct radius_parse_attr_state *state,
+ u32 vendor, u8 type, u8 len)
+{
+ struct hostapd_radius_attr *attr;
+ struct wpabuf *buf;
+ void *val;
+
+ val = state->attrdata;
+
+ buf = state->buf++;
+ buf->buf = val;
+
+ attr = state->attr++;
+ attr->val = buf;
+ attr->type = type;
+
+ if (state->prev)
+ state->prev->next = attr;
+ state->prev = attr;
+
+ if (vendor) {
+ u8 *vendor_hdr = val + 4;
+
+ WPA_PUT_BE32(val, vendor);
+ vendor_hdr[0] = type;
+ vendor_hdr[1] = len + 2;
+
+ len += VENDOR_ATTR_SIZE;
+ val += VENDOR_ATTR_SIZE;
+ attr->type = RADIUS_ATTR_VENDOR_SPECIFIC;
+ }
+
+ buf->size = buf->used = len;
+ state->attrdata += len;
+
+ return val;
+}
+
+static void
+radius_parse_attrs(struct blob_attr **tb, struct radius_parse_attr_state *state)
+{
+ struct blob_attr *data = tb[USER_ATTR_RADIUS];
+ struct hostapd_radius_attr *prev = NULL;
+ struct blob_attr *cur;
+ int len, rem;
+ void *val;
+
+ if ((cur = tb[USER_ATTR_VLAN]) != NULL && blobmsg_get_u32(cur) < 4096) {
+ char buf[5];
+
+ val = radius_add_attr(state, 0, RADIUS_ATTR_TUNNEL_TYPE, 4);
+ WPA_PUT_BE32(val, RADIUS_TUNNEL_TYPE_VLAN);
+
+ val = radius_add_attr(state, 0, RADIUS_ATTR_TUNNEL_MEDIUM_TYPE, 4);
+ WPA_PUT_BE32(val, RADIUS_TUNNEL_MEDIUM_TYPE_802);
+
+ len = snprintf(buf, sizeof(buf), "%d", blobmsg_get_u32(cur));
+ val = radius_add_attr(state, 0, RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID, len);
+ memcpy(val, buf, len);
+ }
+
+ if ((cur = tb[USER_ATTR_MAX_RATE_UP]) != NULL) {
+ val = radius_add_attr(state, VENDOR_ID_WISPR, 7, 4);
+ WPA_PUT_BE32(val, blobmsg_get_u32(cur));
+ }
+
+ if ((cur = tb[USER_ATTR_MAX_RATE_DOWN]) != NULL) {
+ val = radius_add_attr(state, VENDOR_ID_WISPR, 8, 4);
+ WPA_PUT_BE32(val, blobmsg_get_u32(cur));
+ }
+
+ blobmsg_for_each_attr(cur, data, rem) {
+ struct radius_parse_attr_data *data;
+ void *val;
+ int size;
+
+ data = radius_parse_attr(cur);
+ if (!data)
+ continue;
+
+ val = radius_add_attr(state, data->vendor, data->type, data->size);
+ switch (data->format) {
+ case 's':
+ memcpy(val, data->data, data->size);
+ break;
+ case 'x':
+ hexstr2bin(data->data, val, data->size);
+ break;
+ case 'd':
+ WPA_PUT_BE32(val, atoi(data->data));
+ break;
+ }
+ }
+}
+
+static void
+radius_user_parse_methods(struct eap_user *eap, struct blob_attr *data)
+{
+ struct blob_attr *cur;
+ int rem, n = 0;
+
+ if (!data)
+ return;
+
+ blobmsg_for_each_attr(cur, data, rem) {
+ const char *method;
+
+ if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+ continue;
+
+ if (n == EAP_MAX_METHODS)
+ break;
+
+ method = blobmsg_get_string(cur);
+ eap->methods[n].method = eap_server_get_type(method, &eap->methods[n].vendor);
+ if (eap->methods[n].vendor == EAP_VENDOR_IETF &&
+ eap->methods[n].method == EAP_TYPE_NONE) {
+ if (!strcmp(method, "TTLS-PAP")) {
+ eap->ttls_auth |= EAP_TTLS_AUTH_PAP;
+ continue;
+ }
+ if (!strcmp(method, "TTLS-CHAP")) {
+ eap->ttls_auth |= EAP_TTLS_AUTH_CHAP;
+ continue;
+ }
+ if (!strcmp(method, "TTLS-MSCHAP")) {
+ eap->ttls_auth |= EAP_TTLS_AUTH_MSCHAP;
+ continue;
+ }
+ if (!strcmp(method, "TTLS-MSCHAPV2")) {
+ eap->ttls_auth |= EAP_TTLS_AUTH_MSCHAPV2;
+ continue;
+ }
+ }
+ n++;
+ }
+}
+
+static struct eap_user *
+radius_user_get_state(struct radius_user_data *u, struct blob_attr *data,
+ const char *id)
+{
+ static const struct blobmsg_policy policy[__USER_ATTR_MAX] = {
+ [USER_ATTR_PASSWORD] = { "password", BLOBMSG_TYPE_STRING },
+ [USER_ATTR_HASH] = { "hash", BLOBMSG_TYPE_STRING },
+ [USER_ATTR_SALT] = { "salt", BLOBMSG_TYPE_STRING },
+ [USER_ATTR_METHODS] = { "methods", BLOBMSG_TYPE_ARRAY },
+ [USER_ATTR_RADIUS] = { "radius", BLOBMSG_TYPE_ARRAY },
+ [USER_ATTR_VLAN] = { "vlan-id", BLOBMSG_TYPE_INT32 },
+ [USER_ATTR_MAX_RATE_UP] = { "max-rate-up", BLOBMSG_TYPE_INT32 },
+ [USER_ATTR_MAX_RATE_DOWN] = { "max-rate-down", BLOBMSG_TYPE_INT32 },
+ };
+ struct blob_attr *tb[__USER_ATTR_MAX], *cur;
+ char *password_buf, *salt_buf, *name_buf;
+ struct radius_parse_attr_state astate = {};
+ struct hostapd_radius_attr *attr;
+ struct radius_user_state *state;
+ int pw_len = 0, salt_len = 0;
+ struct eap_user *eap;
+ struct wpabuf *val;
+ size_t attrsize = 0;
+ void *attrdata;
+ int n_attr = 0;
+
+ state = avl_find_element(&u->user_state, id, state, node);
+ if (state)
+ return &state->data;
+
+ blobmsg_parse(policy, __USER_ATTR_MAX, tb, blobmsg_data(data), blobmsg_len(data));
+
+ if ((cur = tb[USER_ATTR_SALT]) != NULL)
+ salt_len = strlen(blobmsg_get_string(cur)) / 2;
+ if ((cur = tb[USER_ATTR_HASH]) != NULL)
+ pw_len = strlen(blobmsg_get_string(cur)) / 2;
+ else if ((cur = tb[USER_ATTR_PASSWORD]) != NULL)
+ pw_len = blobmsg_len(cur) - 1;
+ radius_count_attrs(tb, &n_attr, &attrsize);
+
+ state = calloc_a(sizeof(*state), &name_buf, strlen(id) + 1,
+ &password_buf, pw_len,
+ &salt_buf, salt_len,
+ &astate.attr, n_attr * sizeof(*astate.attr),
+ &astate.buf, n_attr * sizeof(*astate.buf),
+ &astate.attrdata, attrsize);
+ eap = &state->data;
+ eap->salt = salt_len ? salt_buf : NULL;
+ eap->salt_len = salt_len;
+ eap->password = pw_len ? password_buf : NULL;
+ eap->password_len = pw_len;
+ eap->force_version = -1;
+
+ if ((cur = tb[USER_ATTR_SALT]) != NULL)
+ hexstr2bin(blobmsg_get_string(cur), salt_buf, salt_len);
+ if ((cur = tb[USER_ATTR_PASSWORD]) != NULL)
+ memcpy(password_buf, blobmsg_get_string(cur), pw_len);
+ else if ((cur = tb[USER_ATTR_HASH]) != NULL) {
+ hexstr2bin(blobmsg_get_string(cur), password_buf, pw_len);
+ eap->password_hash = 1;
+ }
+ radius_user_parse_methods(eap, tb[USER_ATTR_METHODS]);
+
+ if (n_attr > 0) {
+ cur = tb[USER_ATTR_RADIUS];
+ eap->accept_attr = astate.attr;
+ radius_parse_attrs(tb, &astate);
+ }
+
+ state->node.key = strcpy(name_buf, id);
+ avl_insert(&u->user_state, &state->node);
+
+ return &state->data;
+
+free:
+ free(state);
+ return NULL;
+}
+
+static int radius_get_eap_user(void *ctx, const u8 *identity,
+ size_t identity_len, int phase2,
+ struct eap_user *user)
+{
+ struct radius_state *s = ctx;
+ struct radius_user_data *u = phase2 ? &s->phase2 : &s->phase1;
+ struct blob_attr *entry;
+ struct eap_user *data;
+ char *id;
+
+ if (identity_len > 512)
+ return -1;
+
+ load_userfile(s);
+
+ id = alloca(identity_len + 1);
+ memcpy(id, identity, identity_len);
+ id[identity_len] = 0;
+
+ entry = radius_user_get(u, id);
+ if (!entry)
+ return -1;
+
+ if (!user)
+ return 0;
+
+ data = radius_user_get_state(u, entry, id);
+ if (!data)
+ return -1;
+
+ *user = *data;
+ if (user->password_len > 0)
+ user->password = os_memdup(user->password, user->password_len);
+ if (user->salt_len > 0)
+ user->salt = os_memdup(user->salt, user->salt_len);
+ user->phase2 = phase2;
+
+ return 0;
+}
+
+static int radius_setup(struct radius_state *s, struct radius_config *c)
+{
+ struct eap_config *eap = &s->eap;
+ struct tls_config conf = {
+ .event_cb = radius_tls_event,
+ .tls_flags = TLS_CONN_DISABLE_TLSv1_3,
+ .cb_ctx = s,
+ };
+
+ eap->eap_server = 1;
+ eap->max_auth_rounds = 100;
+ eap->max_auth_rounds_short = 50;
+ eap->ssl_ctx = tls_init(&conf);
+ if (!eap->ssl_ctx) {
+ wpa_printf(MSG_INFO, "TLS init failed\n");
+ return 1;
+ }
+
+ if (tls_global_set_params(eap->ssl_ctx, &c->tls)) {
+ wpa_printf(MSG_INFO, "failed to set TLS parameters\n");
+ return 1;
+ }
+
+ c->radius.eap_cfg = eap;
+ c->radius.conf_ctx = s;
+ c->radius.get_eap_user = radius_get_eap_user;
+ s->radius = radius_server_init(&c->radius);
+ if (!s->radius) {
+ wpa_printf(MSG_INFO, "failed to initialize radius server\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+static int radius_init(struct radius_state *s)
+{
+ memset(s, 0, sizeof(*s));
+ radius_userdata_init(&s->phase1);
+ radius_userdata_init(&s->phase2);
+}
+
+static void radius_deinit(struct radius_state *s)
+{
+ if (s->radius)
+ radius_server_deinit(s->radius);
+
+ if (s->eap.ssl_ctx)
+ tls_deinit(s->eap.ssl_ctx);
+
+ radius_userdata_free(&s->phase1);
+ radius_userdata_free(&s->phase2);
+}
+
+static int usage(const char *progname)
+{
+ fprintf(stderr, "Usage: %s <options>\n",
+ progname);
+}
+
+int radius_main(int argc, char **argv)
+{
+ static struct radius_state state = {};
+ static struct radius_config config = {};
+ const char *progname = argv[0];
+ int ret = 0;
+ int ch;
+
+ wpa_debug_setup_stdout();
+ wpa_debug_level = 0;
+
+ if (eloop_init()) {
+ wpa_printf(MSG_ERROR, "Failed to initialize event loop");
+ return 1;
+ }
+
+ eap_server_register_methods();
+ radius_init(&state);
+
+ while ((ch = getopt(argc, argv, "6C:c:d:i:k:K:p:P:s:u:")) != -1) {
+ switch (ch) {
+ case '6':
+ config.radius.ipv6 = 1;
+ break;
+ case 'C':
+ config.tls.ca_cert = optarg;
+ break;
+ case 'c':
+ if (config.tls.client_cert2)
+ return usage(progname);
+
+ if (config.tls.client_cert)
+ config.tls.client_cert2 = optarg;
+ else
+ config.tls.client_cert = optarg;
+ break;
+ case 'd':
+ config.tls.dh_file = optarg;
+ break;
+ case 'i':
+ state.eap.server_id = optarg;
+ state.eap.server_id_len = strlen(optarg);
+ break;
+ case 'k':
+ if (config.tls.private_key2)
+ return usage(progname);
+
+ if (config.tls.private_key)
+ config.tls.private_key2 = optarg;
+ else
+ config.tls.private_key = optarg;
+ break;
+ case 'K':
+ if (config.tls.private_key_passwd2)
+ return usage(progname);
+
+ if (config.tls.private_key_passwd)
+ config.tls.private_key_passwd2 = optarg;
+ else
+ config.tls.private_key_passwd = optarg;
+ break;
+ case 'p':
+ config.radius.auth_port = atoi(optarg);
+ break;
+ case 'P':
+ config.radius.acct_port = atoi(optarg);
+ break;
+ case 's':
+ config.radius.client_file = optarg;
+ break;
+ case 'u':
+ state.user_file = optarg;
+ break;
+ default:
+ return usage(progname);
+ }
+ }
+
+ if (!config.tls.client_cert || !config.tls.private_key ||
+ !config.radius.client_file || !state.eap.server_id ||
+ !state.user_file) {
+ wpa_printf(MSG_INFO, "missing options\n");
+ goto out;
+ }
+
+ ret = radius_setup(&state, &config);
+ if (ret)
+ goto out;
+
+ load_userfile(&state);
+ eloop_run();
+
+out:
+ radius_deinit(&state);
+ os_program_deinit();
+
+ return ret;
+}