mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-12-30 14:22:37 +01:00
scan: Move rest of scanning code into scan.c
This commit is contained in:
Denis Kenzior
parent
92c677e715
commit
f2f1bfcdf9
205
src/scan.c
205
src/scan.c
@ -38,6 +38,17 @@
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#include "src/ie.h"
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#include "src/scan.h"
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struct l_genl_family *nl80211 = NULL;
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uint32_t scan_id = 0;
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scan_notify_func_t notify = NULL;
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struct scan_results {
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uint32_t wiphy;
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uint32_t ifindex;
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struct l_queue *bss_list;
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};
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void scan_start(struct l_genl_family *nl80211, uint32_t ifindex,
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scan_func_t callback, void *user_data)
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{
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@ -66,17 +77,6 @@ void scan_sched_start(struct l_genl_family *nl80211, uint32_t ifindex,
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l_error("Starting scheduled scan failed");
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}
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void scan_get_results(struct l_genl_family *nl80211, uint32_t ifindex,
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scan_func_t callback, scan_done_func_t scan_done,
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void *user_data)
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{
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struct l_genl_msg *msg;
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msg = l_genl_msg_new_sized(NL80211_CMD_GET_SCAN, 8);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &ifindex);
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l_genl_family_dump(nl80211, msg, callback, user_data, scan_done);
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}
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enum scan_ssid_security scan_get_ssid_security(
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enum ie_bss_capability bss_capability,
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const struct ie_rsn_info *info)
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@ -100,10 +100,10 @@ enum scan_ssid_security scan_get_ssid_security(
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}
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static bool scan_parse_bss_information_elements(struct scan_bss *bss,
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const uint8_t **ssid, uint8_t *ssid_len,
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const void *data, uint16_t len)
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{
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struct ie_tlv_iter iter;
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bool have_ssid = false;
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ie_tlv_iter_init(&iter, data, len);
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@ -115,8 +115,9 @@ static bool scan_parse_bss_information_elements(struct scan_bss *bss,
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if (iter.len > 32)
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return false;
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*ssid_len = iter.len;
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*ssid = iter.data;
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memcpy(bss->ssid, iter.data, iter.len);
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bss->ssid_len = iter.len;
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have_ssid = true;
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break;
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case IE_TYPE_RSN:
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if (!bss->rsne)
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@ -132,12 +133,10 @@ static bool scan_parse_bss_information_elements(struct scan_bss *bss,
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}
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}
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return true;
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return have_ssid;
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}
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static struct scan_bss *scan_parse_attr_bss(struct l_genl_attr *attr,
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const uint8_t **ssid,
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uint8_t *ssid_len)
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static struct scan_bss *scan_parse_attr_bss(struct l_genl_attr *attr)
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{
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uint16_t type, len;
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const void *data;
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@ -173,7 +172,7 @@ static struct scan_bss *scan_parse_attr_bss(struct l_genl_attr *attr,
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break;
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case NL80211_BSS_INFORMATION_ELEMENTS:
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if (!scan_parse_bss_information_elements(bss,
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ssid, ssid_len, data, len))
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data, len))
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goto fail;
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break;
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@ -187,11 +186,9 @@ fail:
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return NULL;
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}
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struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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static struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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uint32_t *out_ifindex,
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uint64_t *out_wdev,
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const uint8_t **out_ssid,
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uint8_t *out_ssid_len)
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uint64_t *out_wdev)
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{
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struct l_genl_attr attr, nested;
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uint16_t type, len;
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@ -199,8 +196,6 @@ struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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uint32_t ifindex;
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uint64_t wdev;
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struct scan_bss *bss = NULL;
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const uint8_t *ssid = NULL;
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uint8_t ssid_len = 0;
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if (!l_genl_attr_init(&attr, msg))
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return NULL;
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@ -225,7 +220,7 @@ struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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if (!l_genl_attr_recurse(&attr, &nested))
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return NULL;
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bss = scan_parse_attr_bss(&nested, &ssid, &ssid_len);
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bss = scan_parse_attr_bss(&nested);
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break;
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}
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}
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@ -233,23 +228,12 @@ struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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if (!bss)
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return NULL;
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if (!ssid) {
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scan_bss_free(bss);
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return NULL;
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}
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if (out_ifindex)
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*out_ifindex = ifindex;
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if (out_wdev)
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*out_wdev = wdev;
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if (out_ssid_len)
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*out_ssid_len = ssid_len;
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if (out_ssid)
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*out_ssid = ssid;
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return bss;
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}
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@ -291,3 +275,150 @@ void bss_get_supported_ciphers(struct scan_bss *bss,
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*pairwise_ciphers = ie.pairwise_ciphers;
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*group_ciphers = ie.group_cipher;
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}
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static void get_scan_callback(struct l_genl_msg *msg, void *user_data)
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{
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struct scan_results *results = user_data;
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struct scan_bss *bss;
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uint32_t ifindex;
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l_debug("get_scan_callback");
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if (!results->bss_list)
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results->bss_list = l_queue_new();
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bss = scan_parse_result(msg, &ifindex, NULL);
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if (!bss)
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return;
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if (ifindex != results->ifindex) {
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l_warn("ifindex mismatch in get_scan_callback");
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scan_bss_free(bss);
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return;
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}
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l_queue_push_tail(results->bss_list, bss);
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}
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static void get_scan_done(void *user)
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{
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struct scan_results *results = user;
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bool new_owner = false;
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l_debug("get_scan_done");
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if (!results->bss_list)
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goto done;
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if (notify)
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new_owner = notify(results->wiphy, results->ifindex,
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results->bss_list);
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if (!new_owner)
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l_queue_destroy(results->bss_list,
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(l_queue_destroy_func_t) scan_bss_free);
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done:
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l_free(results);
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}
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static void scan_notify(struct l_genl_msg *msg, void *user_data)
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{
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struct l_genl_attr attr;
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uint16_t type, len;
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const void *data;
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uint8_t cmd;
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uint32_t uninitialized_var(attr_ifindex);
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bool have_ifindex;
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uint32_t uninitialized_var(attr_wiphy);
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bool have_wiphy;
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cmd = l_genl_msg_get_command(msg);
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l_debug("Scan notification %u", cmd);
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if (!l_genl_attr_init(&attr, msg))
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return;
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while (l_genl_attr_next(&attr, &type, &len, &data)) {
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switch (type) {
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case NL80211_ATTR_WIPHY:
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if (len != sizeof(uint32_t)) {
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l_warn("Invalid wiphy attribute");
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return;
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}
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have_wiphy = true;
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attr_wiphy = *((uint32_t *) data);
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break;
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case NL80211_ATTR_IFINDEX:
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if (len != sizeof(uint32_t)) {
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l_warn("Invalid interface index attribute");
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return;
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}
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have_ifindex = true;
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attr_ifindex = *((uint32_t *) data);
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break;
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}
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}
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if (!have_wiphy) {
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l_warn("Scan results do not contain wiphy attribute");
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return;
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}
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if (!have_ifindex) {
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l_warn("Scan results do not contain ifindex attribute");
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return;
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}
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if (!notify)
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return;
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switch (cmd) {
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case NL80211_CMD_NEW_SCAN_RESULTS:
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case NL80211_CMD_SCHED_SCAN_RESULTS:
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{
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struct l_genl_msg *msg;
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struct scan_results *results;
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results = l_new(struct scan_results, 1);
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results->wiphy = attr_wiphy;
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results->ifindex = attr_ifindex;
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msg = l_genl_msg_new_sized(NL80211_CMD_GET_SCAN, 8);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4,
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&attr_ifindex);
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l_genl_family_dump(nl80211, msg, get_scan_callback, results,
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get_scan_done);
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return;
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}
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}
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}
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bool scan_init(struct l_genl_family *in, scan_notify_func_t func)
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{
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nl80211 = in;
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scan_id = l_genl_family_register(nl80211, "scan", scan_notify,
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NULL, NULL);
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if (!scan_id) {
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l_error("Registering for scan notification failed");
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return false;
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}
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notify = func;
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return true;
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}
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bool scan_free()
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{
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if (!nl80211)
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return false;
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notify = NULL;
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return l_genl_family_unregister(nl80211, scan_id);
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}
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18
src/scan.h
18
src/scan.h
@ -28,7 +28,8 @@ enum scan_ssid_security {
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};
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typedef void (*scan_func_t)(struct l_genl_msg *msg, void *user_data);
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typedef void (*scan_done_func_t)(void *user_data);
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typedef bool (*scan_notify_func_t)(uint32_t wiphy, uint32_t ifindex,
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struct l_queue *bss_list);
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struct scan_bss {
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uint8_t addr[6];
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@ -37,6 +38,8 @@ struct scan_bss {
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uint16_t capability;
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uint8_t *rsne;
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uint8_t *wpa;
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uint8_t ssid[32];
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uint8_t ssid_len;
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};
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void scan_start(struct l_genl_family *nl80211, uint32_t ifindex,
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@ -46,20 +49,13 @@ void scan_sched_start(struct l_genl_family *nl80211, uint32_t ifindex,
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uint32_t scan_interval, scan_func_t callback,
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void *user_data);
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void scan_get_results(struct l_genl_family *nl80211, uint32_t ifindex,
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scan_func_t callback, scan_done_func_t scan_done,
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void *user_data);
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enum scan_ssid_security scan_get_ssid_security(enum ie_bss_capability bss_cap,
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const struct ie_rsn_info *info);
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void scan_bss_free(struct scan_bss *bss);
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struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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uint32_t *out_ifindex,
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uint64_t *out_wdev,
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const uint8_t **out_ssid,
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uint8_t *out_ssid_len);
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void bss_get_supported_ciphers(struct scan_bss *bss,
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uint16_t *pairwise_ciphers,
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uint16_t *group_ciphers);
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bool scan_init(struct l_genl_family *in, scan_notify_func_t func);
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bool scan_free();
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298
src/wiphy.c
298
src/wiphy.c
@ -1488,111 +1488,6 @@ static void network_reset_bss_list(const void *key, void *value,
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network->bss_list = l_queue_new();
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}
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static void get_scan_callback(struct l_genl_msg *msg, void *user_data)
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{
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struct netdev *netdev = user_data;
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struct scan_bss *bss;
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uint32_t ifindex;
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const uint8_t *ssid;
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uint8_t ssid_len;
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struct network *network;
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enum scan_ssid_security ssid_security;
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const char *path;
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l_debug("get_scan_callback");
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if (!netdev->old_bss_list) {
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netdev->old_bss_list = netdev->bss_list;
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netdev->bss_list = l_queue_new();
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l_hashmap_foreach(netdev->networks,
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network_reset_bss_list, NULL);
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}
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bss = scan_parse_result(msg, &ifindex, NULL, &ssid, &ssid_len);
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if (!bss)
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return;
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if (ifindex != netdev->index)
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goto fail;
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if (!util_ssid_is_utf8(ssid_len, ssid)) {
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l_warn("Ignoring Network with non-UTF8 SSID '%s'",
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util_ssid_to_utf8(ssid_len, ssid));
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goto fail;
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}
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/*
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* If both an RSN and a WPA elements are present currently
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* RSN takes priority and the WPA IE is ignored.
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*/
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if (bss->rsne) {
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struct ie_rsn_info rsne;
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int res = ie_parse_rsne_from_data(bss->rsne, bss->rsne[1] + 2,
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&rsne);
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if (res < 0) {
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l_debug("Cannot parse RSN field (%d, %s)",
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res, strerror(-res));
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goto fail;
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}
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ssid_security = scan_get_ssid_security(bss->capability, &rsne);
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} else if (bss->wpa) {
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struct ie_rsn_info wpa;
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int res = ie_parse_wpa_from_data(bss->wpa, bss->wpa[1] + 2,
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&wpa);
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if (res < 0) {
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l_debug("Cannot parse WPA IE %s (%d, %s)",
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util_ssid_to_utf8(ssid_len, ssid),
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res, strerror(-res));
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goto fail;
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}
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ssid_security = scan_get_ssid_security(bss->capability, &wpa);
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} else
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ssid_security = scan_get_ssid_security(bss->capability, NULL);
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path = iwd_network_get_path(netdev, ssid, ssid_len, ssid_security);
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network = l_hashmap_lookup(netdev->networks, path);
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if (!network) {
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network = l_new(struct network, 1);
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network->netdev = netdev;
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memcpy(network->ssid, ssid, ssid_len);
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network->ssid_security = ssid_security;
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network->bss_list = l_queue_new();
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network->object_path = strdup(path);
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l_hashmap_insert(netdev->networks,
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network->object_path, network);
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l_debug("Found new SSID \"%s\" security %s", network->ssid,
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ssid_security_to_str(ssid_security));
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if (!l_dbus_register_interface(dbus_get_bus(),
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network->object_path,
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IWD_NETWORK_INTERFACE,
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setup_network_interface,
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network, NULL))
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l_info("Unable to register %s interface",
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IWD_NETWORK_INTERFACE);
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else
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network_emit_added(network);
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}
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l_debug("Found BSS '%s' with SSID: %s, freq: %u, "
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"strength: %i",
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bss_address_to_string(bss),
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util_ssid_to_utf8(ssid_len, ssid),
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bss->frequency, bss->signal_strength);
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l_queue_insert(network->bss_list, bss, add_bss, NULL);
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l_queue_push_head(netdev->bss_list, bss);
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return;
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fail:
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bss_free(bss);
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|
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}
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|
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static bool network_remove_if_lost(const void *key, void *data, void *user_data)
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{
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struct network *network = data;
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@ -1607,11 +1502,114 @@ static bool network_remove_if_lost(const void *key, void *data, void *user_data)
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return true;
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}
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|
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static void get_scan_done(void *user)
|
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static void process_bss(struct netdev *netdev, struct scan_bss *bss)
|
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{
|
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struct netdev *netdev = user;
|
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struct network *network;
|
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enum scan_ssid_security ssid_security;
|
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const char *path;
|
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|
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l_debug("get_scan_done for netdev: %p", netdev);
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l_debug("Found BSS '%s' with SSID: %s, freq: %u, "
|
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"strength: %i",
|
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bss_address_to_string(bss),
|
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util_ssid_to_utf8(bss->ssid_len, bss->ssid),
|
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bss->frequency, bss->signal_strength);
|
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|
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if (!util_ssid_is_utf8(bss->ssid_len, bss->ssid)) {
|
||||
l_warn("Ignoring BSS with non-UTF8 SSID");
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* If both an RSN and a WPA elements are present currently
|
||||
* RSN takes priority and the WPA IE is ignored.
|
||||
*/
|
||||
if (bss->rsne) {
|
||||
struct ie_rsn_info rsne;
|
||||
int res = ie_parse_rsne_from_data(bss->rsne, bss->rsne[1] + 2,
|
||||
&rsne);
|
||||
if (res < 0) {
|
||||
l_debug("Cannot parse RSN field (%d, %s)",
|
||||
res, strerror(-res));
|
||||
return;
|
||||
}
|
||||
|
||||
ssid_security = scan_get_ssid_security(bss->capability, &rsne);
|
||||
} else if (bss->wpa) {
|
||||
struct ie_rsn_info wpa;
|
||||
int res = ie_parse_wpa_from_data(bss->wpa, bss->wpa[1] + 2,
|
||||
&wpa);
|
||||
if (res < 0) {
|
||||
l_debug("Cannot parse WPA IE (%d, %s)",
|
||||
res, strerror(-res));
|
||||
return;
|
||||
}
|
||||
|
||||
ssid_security = scan_get_ssid_security(bss->capability, &wpa);
|
||||
} else
|
||||
ssid_security = scan_get_ssid_security(bss->capability, NULL);
|
||||
|
||||
path = iwd_network_get_path(netdev, bss->ssid, bss->ssid_len,
|
||||
ssid_security);
|
||||
|
||||
network = l_hashmap_lookup(netdev->networks, path);
|
||||
if (!network) {
|
||||
network = l_new(struct network, 1);
|
||||
network->netdev = netdev;
|
||||
memcpy(network->ssid, bss->ssid, bss->ssid_len);
|
||||
network->ssid_security = ssid_security;
|
||||
network->bss_list = l_queue_new();
|
||||
network->object_path = strdup(path);
|
||||
l_hashmap_insert(netdev->networks,
|
||||
network->object_path, network);
|
||||
|
||||
l_debug("Added new Network \"%s\" security %s", network->ssid,
|
||||
ssid_security_to_str(ssid_security));
|
||||
|
||||
if (!l_dbus_register_interface(dbus_get_bus(),
|
||||
network->object_path,
|
||||
IWD_NETWORK_INTERFACE,
|
||||
setup_network_interface,
|
||||
network, NULL))
|
||||
l_info("Unable to register %s interface",
|
||||
IWD_NETWORK_INTERFACE);
|
||||
else
|
||||
network_emit_added(network);
|
||||
}
|
||||
|
||||
l_queue_insert(network->bss_list, bss, add_bss, NULL);
|
||||
}
|
||||
|
||||
static bool new_scan_results(uint32_t wiphy_id, uint32_t ifindex,
|
||||
struct l_queue *bss_list)
|
||||
{
|
||||
struct wiphy *wiphy;
|
||||
struct netdev *netdev;
|
||||
const struct l_queue_entry *bss_entry;
|
||||
|
||||
wiphy = l_queue_find(wiphy_list, wiphy_match,
|
||||
L_UINT_TO_PTR(wiphy_id));
|
||||
if (!wiphy) {
|
||||
l_warn("Scan notification for unknown wiphy");
|
||||
return false;
|
||||
}
|
||||
|
||||
netdev = l_queue_find(wiphy->netdev_list, netdev_match,
|
||||
L_UINT_TO_PTR(ifindex));
|
||||
if (!netdev) {
|
||||
l_warn("Scan notification for unknown ifindex");
|
||||
return false;
|
||||
}
|
||||
|
||||
netdev->old_bss_list = netdev->bss_list;
|
||||
netdev->bss_list = bss_list;
|
||||
l_hashmap_foreach(netdev->networks, network_reset_bss_list, NULL);
|
||||
|
||||
for (bss_entry = l_queue_get_entries(bss_list); bss_entry;
|
||||
bss_entry = bss_entry->next) {
|
||||
struct scan_bss *bss = bss_entry->data;
|
||||
|
||||
process_bss(netdev, bss);
|
||||
}
|
||||
|
||||
if (netdev->connected_bss) {
|
||||
struct scan_bss *bss;
|
||||
@ -1636,6 +1634,8 @@ static void get_scan_done(void *user)
|
||||
|
||||
l_queue_destroy(netdev->old_bss_list, bss_free);
|
||||
netdev->old_bss_list = NULL;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static void interface_dump_callback(struct l_genl_msg *msg, void *user_data)
|
||||
@ -1940,81 +1940,6 @@ static void wiphy_config_notify(struct l_genl_msg *msg, void *user_data)
|
||||
}
|
||||
}
|
||||
|
||||
static void wiphy_scan_notify(struct l_genl_msg *msg, void *user_data)
|
||||
{
|
||||
struct wiphy *wiphy = NULL;
|
||||
struct netdev *netdev = NULL;
|
||||
struct l_genl_attr attr;
|
||||
uint16_t type, len;
|
||||
const void *data;
|
||||
uint8_t cmd;
|
||||
uint32_t uninitialized_var(attr_ifindex);
|
||||
bool have_ifindex;
|
||||
uint32_t uninitialized_var(attr_wiphy);
|
||||
bool have_wiphy;
|
||||
|
||||
cmd = l_genl_msg_get_command(msg);
|
||||
|
||||
l_debug("Scan notification %u", cmd);
|
||||
|
||||
if (!l_genl_attr_init(&attr, msg))
|
||||
return;
|
||||
|
||||
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
||||
switch (type) {
|
||||
case NL80211_ATTR_WIPHY:
|
||||
if (len != sizeof(uint32_t)) {
|
||||
l_warn("Invalid wiphy attribute");
|
||||
return;
|
||||
}
|
||||
|
||||
have_wiphy = true;
|
||||
attr_wiphy = *((uint32_t *) data);
|
||||
break;
|
||||
case NL80211_ATTR_IFINDEX:
|
||||
if (len != sizeof(uint32_t)) {
|
||||
l_warn("Invalid interface index attribute");
|
||||
return;
|
||||
}
|
||||
|
||||
have_ifindex = true;
|
||||
attr_ifindex = *((uint32_t *) data);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!have_wiphy) {
|
||||
l_warn("Scan results do not contain wiphy attribute");
|
||||
return;
|
||||
}
|
||||
|
||||
if (!have_ifindex) {
|
||||
l_warn("Scan results do not contain ifindex attribute");
|
||||
return;
|
||||
}
|
||||
|
||||
wiphy = l_queue_find(wiphy_list, wiphy_match,
|
||||
L_UINT_TO_PTR(attr_wiphy));
|
||||
if (!wiphy) {
|
||||
l_warn("Scan notification for unknown wiphy");
|
||||
return;
|
||||
}
|
||||
|
||||
netdev = l_queue_find(wiphy->netdev_list, netdev_match,
|
||||
L_UINT_TO_PTR(attr_ifindex));
|
||||
if (!netdev) {
|
||||
l_warn("Scan notification for unknown ifindex");
|
||||
return;
|
||||
}
|
||||
|
||||
if (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
|
||||
cmd == NL80211_CMD_SCHED_SCAN_RESULTS) {
|
||||
scan_get_results(nl80211, netdev->index, get_scan_callback,
|
||||
get_scan_done, netdev);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static void wiphy_mlme_notify(struct l_genl_msg *msg, void *user_data)
|
||||
{
|
||||
struct wiphy *wiphy = NULL;
|
||||
@ -2185,10 +2110,6 @@ static void nl80211_appeared(void *user_data)
|
||||
NULL, NULL))
|
||||
l_error("Registering for config notification failed");
|
||||
|
||||
if (!l_genl_family_register(nl80211, "scan", wiphy_scan_notify,
|
||||
NULL, NULL))
|
||||
l_error("Registering for scan notification failed");
|
||||
|
||||
if (!l_genl_family_register(nl80211, "mlme", wiphy_mlme_notify,
|
||||
NULL, NULL))
|
||||
l_error("Registering for MLME notification failed");
|
||||
@ -2197,6 +2118,9 @@ static void nl80211_appeared(void *user_data)
|
||||
wiphy_regulatory_notify, NULL, NULL))
|
||||
l_error("Registering for regulatory notification failed");
|
||||
|
||||
if (!scan_init(nl80211, new_scan_results))
|
||||
l_error("Unable to init scan functionality");
|
||||
|
||||
wiphy_list = l_queue_new();
|
||||
|
||||
msg = l_genl_msg_new(NL80211_CMD_GET_PROTOCOL_FEATURES);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user