treewide: improve maintaince

General revisions to maintain code (no functional changes intended).
Removed unnecessary linked-list length checks.
Fixed some typos on function names / comments.
Changed how test_storage forces SEGV due to new compiler warnings.

Signed-off-by: Ian Clowes <clowes_ian@hotmail.com>

src/include/datastorage.h

@@ -9,16 +9,9 @@
 #include "mac_utils.h"
 #include "utils.h"
 
-// Core data storage array sizes
-#define ARRAY_AP_LEN 100
-#define ARRAY_CLIENT_LEN 300
-#define PROBE_ARRAY_LEN 1000
-#define DENY_REQ_ARRAY_LEN 100
-
 /* Mac */
 
 // ---------------- Defines -------------------
-#define MAC_LIST_LENGTH 100
 #define DEFAULT_RRM_MODE_ORDER "pat"
 #define RRM_MODE_COUNT 3
 

src/include/tcpsocket.h

@@ -21,7 +21,7 @@ struct network_con_s {
  * @param port
  * @return
  */
-int add_tcp_conncection(char *ipv4, int port);
+int add_tcp_connection(char *ipv4, int port);
 
 /**
  * Opens a tcp server and adds it to the uloop.

src/network/tcpsocket.c

@@ -56,10 +56,12 @@ static void client_notify_write(struct ustream *s, int bytes) {
     return;
 }
 
-static void client_notify_state(struct ustream *s) {
-    struct client *cl = container_of(s,
-    struct client, s.stream);
 
+// FIXME: This void function tries to return a value sometimes...
+static void client_notify_state(struct ustream *s) {
+    dawnlog_debug_func("Entering...");
+
+    struct client *cl = container_of(s, struct client, s.stream);
     if (!s->eof)
         return;
 
@@ -71,8 +73,7 @@ static void client_notify_state(struct ustream *s) {
 }
 
 static void client_to_server_close(struct ustream *s) {
-    struct network_con_s *con = container_of(s,
-    struct network_con_s, stream.stream);
+    struct network_con_s *con = container_of(s, struct network_con_s, stream.stream);
 
     dawnlog_debug_func("Entering...");
 
@@ -87,8 +88,7 @@ static void client_to_server_close(struct ustream *s) {
 }
 
 static void client_to_server_state(struct ustream *s) {
-    struct client *cl = container_of(s,
-    struct client, s.stream);
+    struct client *cl = container_of(s, struct client, s.stream);
 
     dawnlog_debug_func("Entering...");
 
@@ -289,7 +289,7 @@ static void connect_cb(struct uloop_fd *f, unsigned int events) {
     entry->connected = 1;
 }
 
-int add_tcp_conncection(char *ipv4, int port) {
+int add_tcp_connection(char *ipv4, int port) {
     struct sockaddr_in serv_addr;
 
     dawnlog_debug_func("Entering...");

src/storage/datastorage.c

@@ -90,7 +90,7 @@ static const struct dawn_mac dawn_mac_null = { .u8 = {0,0,0,0,0,0} };
 ** then the target element does not exist, but can be inserted by using the returned reference.
 */
 
-static struct probe_entry_s** probe_skip_array_find_first_entry(struct dawn_mac client_mac, struct dawn_mac bssid_mac, int do_bssid)
+static struct probe_entry_s** probe_skip_array_find_first_entry(struct dawn_mac client_mac, struct dawn_mac bssid_mac, bool do_bssid)
 {
     int lo = 0;
     struct probe_entry_s** lo_ptr = &probe_skip_set;
@@ -906,10 +906,6 @@ void client_array_insert(client *entry, client** insert_pos) {
 
     client_entry_last++;
 
-    if (client_entry_last == ARRAY_CLIENT_LEN) {
-        dawnlog_warning("client_array overflowing (now contains %d entries)!\n", client_entry_last);
-    }
-
     // Try to keep skip list density stable
     if ((client_entry_last / DAWN_CLIENT_SKIP_RATIO) > client_skip_entry_last)
     {
@@ -1220,10 +1216,6 @@ probe_entry* insert_to_array(probe_entry* entry, int inc_counter, int save_80211
         *existing_entry = entry;
         probe_entry_last++;
 
-        if (probe_entry_last == PROBE_ARRAY_LEN) {
-           dawnlog_warning("probe_array overflowing (now contains %d entries)!\n", probe_entry_last);
-        }
-
         // Try to keep skip list density stable
         if ((probe_entry_last / DAWN_PROBE_SKIP_RATIO) > probe_skip_entry_last)
         {
@@ -1299,10 +1291,6 @@ void ap_array_insert(ap* entry) {
     entry->next_ap = *i;
     *i = entry;
     ap_entry_last++;
-
-    if (ap_entry_last == ARRAY_AP_LEN) {
-        dawnlog_warning("ap_array overflowing (contains %d entries)!\n", ap_entry_last);
-    }
 }
 
 ap* ap_array_get_ap(struct dawn_mac bssid_mac, const uint8_t* ssid) {
@@ -1451,7 +1439,7 @@ void insert_macs_from_file() {
     ssize_t read;
 
     dawnlog_debug_func("Entering...");
-// TODO: Loading to array is not constrained by array checks.  Buffer overrun can occur.
+
     fp = fopen("/tmp/dawn_mac_list", "r");
     if (fp == NULL)
     {
@@ -1596,10 +1584,6 @@ auth_entry* insert_to_denied_req_array(auth_entry* entry, int inc_counter, time_
         entry->next_auth = *i;
         *i = entry;
         denied_req_last++;
-
-        if (denied_req_last == DENY_REQ_ARRAY_LEN) {
-           dawnlog_warning("denied_req_array overflowing (now contains %d entries)!\n", denied_req_last);
-        }
     }
 
     pthread_mutex_unlock(&denied_array_mutex);
@@ -1636,10 +1620,6 @@ struct mac_entry_s* insert_to_mac_array(struct mac_entry_s* entry, struct mac_en
     *insert_pos = entry;
     mac_set_last++;
 
-    if (mac_set_last == DENY_REQ_ARRAY_LEN) {
-        dawnlog_warning("denied_req_array overflowing (now contains %d entries)!\n", mac_set_last);
-    }
-
     return entry;
 }
 

src/test/test_storage.c

@@ -429,7 +429,17 @@ static int consume_actions(int argc, char* argv[], int harness_verbosity)
             args_required = 1;
 
             char* leaky = dawn_malloc(10);
-            strcpy(leaky, "LEAKED"); // Force use of memory to avoid unused error
+            strcpy(leaky, "TRACKED"); // Force use of memory to avoid unused error
+
+            leaky = malloc(10);
+            strcpy(leaky, "UNTRACKED"); // Force use of memory to avoid unused error
+        }
+        else if (strcmp(*argv, "segv") == 0)
+        {
+            args_required = 1;
+
+            char *badpointer = 0;
+            *badpointer = 0;
         }
         else if (strcmp(*argv, "memaudit") == 0)
         {

src/utils/dawn_uci.c

@@ -308,15 +308,18 @@ struct probe_metric_s uci_get_dawn_metric() {
     struct uci_section *global_s, *band_s[__DAWN_BAND_MAX];
     struct uci_option *global_neighbors = NULL, *neighbors;
 
-    if (!(global_s = uci_find_metric_section("global"))) {
-        if (!(global_s = uci_find_metric_section(NULL))) {
-            dawnlog_warning("config metric global section not found! Using defaults.\n");
-        } else {
-            dawnlog_warning("config metric global section not found. "
-                            "Using first unnamed config metric.\n"
-                            "Consider naming a 'global' metric section to avoid ambiguity.\n");
-        }
-    }
+    dawnlog_debug_func("Entering...");
+
+    global_s = uci_find_metric_section("global");
+
+    if (!global_s && (global_s = uci_find_metric_section(NULL)))
+        dawnlog_warning("config metric global section not found. "
+            "Using first unnamed config metric.\n"
+            "Consider naming a 'global' metric section to avoid ambiguity.\n");
+
+    if (!global_s)
+        dawnlog_warning("config metric global section not found! Using defaults.\n");
+
     if (global_s) {
         // True global configuration
         DAWN_SET_CONFIG_INT(ret, global_s, kicking);

src/utils/mac_utils.c

@@ -48,17 +48,10 @@ int hwaddr_aton(const char* txt, uint8_t* addr) {
 
 void write_mac_to_file(char* path, struct dawn_mac addr) {
     FILE* f = fopen(path, "a");
-    if (f == NULL) {
+    if (f == NULL)
         dawnlog_error("Error opening mac file!\n");
-
-        // TODO: Should this be an exit()?
-        exit(1);
-    }
-
-    char mac_buf[20];
-    sprintf(mac_buf, MACSTR, MAC2STR(addr.u8));
-
-    fprintf(f, "%s\n", mac_buf);
+    else
+        fprintf(f, MACSTR "\n", MAC2STR(addr.u8));
 
     fclose(f);
 }

src/utils/ubus.c

@@ -441,25 +441,25 @@ int discard_entry = true;
 
     dawnlog_debug_func("Entering...");
     print_probe_array();
-    auth_entry* auth_req = dawn_malloc(sizeof(struct auth_entry_s));
-    if (auth_req == NULL)
+    auth_entry* assoc_req = dawn_malloc(sizeof(struct auth_entry_s));
+    if (assoc_req == NULL)
         return -1;
 
-    parse_to_assoc_req(msg, auth_req);
+    parse_to_assoc_req(msg, assoc_req);
     dawnlog_debug("Association entry: ");
-    print_auth_entry(DAWNLOG_DEBUG, auth_req);
+    print_auth_entry(DAWNLOG_DEBUG, assoc_req);
 
-    if (!mac_in_maclist(auth_req->client_addr)) {
+    if (!mac_in_maclist(assoc_req->client_addr)) {
         pthread_mutex_lock(&probe_array_mutex);
 
-        probe_entry *tmp = probe_array_get_entry(auth_req->bssid_addr, auth_req->client_addr);
+        probe_entry *tmp = probe_array_get_entry(assoc_req->bssid_addr, assoc_req->client_addr);
 
         pthread_mutex_unlock(&probe_array_mutex);
 
         // block if entry was not already found in probe database
         if (tmp == NULL || !decide_function(tmp, REQ_TYPE_ASSOC)) {
             if (dawn_metric.use_driver_recog) {
-                if (auth_req == insert_to_denied_req_array(auth_req, 1, time(0)))
+                if (assoc_req == insert_to_denied_req_array(assoc_req, 1, time(0)))
                     discard_entry = false;
             }
             return dawn_metric.deny_assoc_reason;
@@ -468,8 +468,8 @@ int discard_entry = true;
 
     if (discard_entry)
     {
-        dawn_free(auth_req);
-        auth_req = NULL;
+        dawn_free(assoc_req);
+        assoc_req = NULL;
     }
 
     return ret;
@@ -503,8 +503,10 @@ static int handle_probe_req(struct blob_attr *msg) {
     return WLAN_STATUS_SUCCESS;
 }
 
+// FIXME: Seems to do nothing...
 static int handle_beacon_rep(struct blob_attr *msg) {
     dawnlog_debug_func("Entering...");
+
     if (parse_to_beacon_rep(msg) == 0) {
         // dawnlog_debug("Inserting beacon Report!\n");
         // insert_to_array(beacon_rep, 1);
@@ -936,7 +938,7 @@ void update_tcp_connections(struct uloop_timeout *t) {
     if (strcmp(network_config.server_ip, ""))
     {
         // nothing happens if tcp connection is already established
-        add_tcp_conncection(network_config.server_ip, network_config.tcp_port);
+        add_tcp_connection(network_config.server_ip, network_config.tcp_port);
     }
     if (network_config.network_option == 2) // mdns enabled?
     {
@@ -1093,7 +1095,7 @@ static void ubus_umdns_cb(struct ubus_request *req, int type, struct blob_attr *
         } else {
             return;
         }
-        add_tcp_conncection(blobmsg_get_string(tb_dawn[DAWN_UMDNS_IPV4]), blobmsg_get_u32(tb_dawn[DAWN_UMDNS_PORT]));
+        add_tcp_connection(blobmsg_get_string(tb_dawn[DAWN_UMDNS_IPV4]), blobmsg_get_u32(tb_dawn[DAWN_UMDNS_PORT]));
     }
 }