8000 Check if AP exists before adding it by dav1901 · Pull Request #5373 · esp8266/Arduino · GitHub
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Check if AP exists before adding it #5373

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Merged
merged 3 commits into from
Nov 28, 2018
Merged

Check if AP exists before adding it #5373

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61d3d18
Check if AP exists before adding it
dav1901 Nov 24, 2018
eed3684
Merge branch 'master' into issue4253
d-a-v Nov 26, 2018
b7c9f1c
Merge branch 'master' into issue4253
d-a-v Nov 27, 2018
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1 change: 1 addition & 0 deletions libraries/ESP8266WiFi/keywords.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,7 @@ softAPgetStationNum KEYWORD2

#ESP8266WiFiMulti
addAP KEYWORD2
existsAP KEYWORD2
run KEYWORD2

#ESP8266WiFiScan
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39 changes: 35 additions & 4 deletions libraries/ESP8266WiFi/src/ESP8266WiFiMulti.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,10 @@ bool ESP8266WiFiMulti::addAP(const char* ssid, const char *passphrase) {
return APlistAdd(ssid, passphrase);
}

bool ESP8266WiFiMulti::existsAP(const char* ssid, const char *passphrase) {
return APlistExists(ssid, passphrase);
}

wl_status_t ESP8266WiFiMulti::run(void) {

wl_status_t status = WiFi.status();
Expand Down Expand Up @@ -184,18 +188,23 @@ bool ESP8266WiFiMulti::APlistAdd(const char* ssid, const char *passphrase) {
WifiAPEntry newAP;

if(!ssid || *ssid == 0x00 || strlen(ssid) > 31) {
// fail SSID to long or missing!
DEBUG_WIFI_MULTI("[WIFI][APlistAdd] no ssid or ssid to long\n");
// fail SSID too long or missing!
DEBUG_WIFI_MULTI("[WIFI][APlistAdd] no ssid or ssid too long\n");
return false;
}

//for passphrase, max is 63 ascii + null. For psk, 64hex + null.
if(passphrase && strlen(passphrase) > 64) {
// fail passphrase to long!
DEBUG_WIFI_MULTI("[WIFI][APlistAdd] passphrase to long\n");
// fail passphrase too long!
DEBUG_WIFI_MULTI("[WIFI][APlistAdd] passphrase too long\n");
return false;
}

if(APlistExists(ssid, passphrase)) {
DEBUG_WIFI_MULTI("[WIFI][APlistAdd] SSID: %s already exists\n", ssid);
return true;
}

newAP.ssid = strdup(ssid);

if(!newAP.ssid) {
Expand All @@ -220,6 +229,28 @@ bool ESP8266WiFiMulti::APlistAdd(const char* ssid, const char *passphrase) {
return true;
}

bool ESP8266WiFiMulti::APlistExists(const char* ssid, const char *passphrase) {
if(!ssid || *ssid == 0x00 || strlen(ssid) > 31) {
// fail SSID too long or missing!
DEBUG_WIFI_MULTI("[WIFI][APlistExists] no ssid or ssid too long\n");
return false;
}
for(auto entry : APlist) {
if(!strcmp(entry.ssid, ssid)) {
if(!passphrase) {
if(!strcmp(entry.passphrase, "")) {
return true;
}
} else {
if(!strcmp(entry.passphrase, passphrase)) {
return true;
}
}
}
}
return false;
}

void ESP8266WiFiMulti::APlistClean(void) {
for(auto entry : APlist) {
if(entry.ssid) {
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2 changes: 2 additions & 0 deletions libraries/ESP8266WiFi/src/ESP8266WiFiMulti.h
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Expand Up @@ -53,12 +53,14 @@ class ESP8266WiFiMulti {
~ESP8266WiFiMulti();

bool addAP(const char* ssid, const char *passphrase = NULL);
bool existsAP(const char* ssid, const char *passphrase = NULL);

wl_status_t run(void);

private:
WifiAPlist APlist;
bool APlistAdd(const char* ssid, const char *passphrase = NULL);
bool APlistExists(const char* ssid, const char *passphrase = NULL);
void APlistClean(void);

};
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0