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Improve weblog robustness

This commit is contained in:
Erik 2019-02-07 20:41:38 +01:00
parent b76915828e
commit afe797fd6e
1 changed files with 11 additions and 16 deletions
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27
sonoff/xdrv_01_webserver.ino
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@ -129,11 +129,11 @@ const char HTTP_SCRIPT_CONSOL[] PROGMEM =
"x.onreadystatechange=function(){"
"if(x.readyState==4&&x.status==200){"
"var z,d;"
"d=x.responseXML;"
"id=d.getElementsByTagName('i')[0].childNodes[0].nodeValue;"
"if(d.getElementsByTagName('j')[0].childNodes[0].nodeValue==0){t.value='';}"
"z=d.getElementsByTagName('l')[0].childNodes;"
"if(z.length>0){t.value+=decodeURIComponent(z[0].nodeValue);}"
"d=x.responseText.split(/\1/);"
"id=d.shift();"
"if(d.shift()==0){t.value='';}"
"z=d.shift();"
"if(z.length>0){t.value+=z;}"
"t.scrollTop=99999;"
"sn=t.scrollTop;"
"}"
@ -1813,7 +1813,9 @@ void HandleAjaxConsoleRefresh(void)
if (strlen(svalue)) { counter = atoi(svalue); }
bool last_reset_web_log_flag = reset_web_log_flag;
String message = F("}9"); // Cannot load mqtt_data here as <> will be encoded by replacements below
// mqtt_data used as scratch space
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%d\1%d\1"), web_log_index, last_reset_web_log_flag);
String message = mqtt_data;
if (!reset_web_log_flag) {
counter = 0;
reset_web_log_flag = true;
@ -1834,20 +1836,13 @@ void HandleAjaxConsoleRefresh(void)
cflg = true;
}
strlcpy(mqtt_data, tmp, len);
message += mqtt_data;
message += mqtt_data; // mqtt_data used as scratch space
}
counter++;
if (!counter) { counter++; } // Skip 0 as it is not allowed
if (!counter) { counter++; } // Skip log index 0 as it is not allowed
} while (counter != web_log_index);
// XML encoding to fix blank console log in concert with javascript decodeURIComponent
message.replace(F("%"), F("%25")); // Needs to be done first as otherwise the % in %26 will also be converted
message.replace(F("&"), F("%26"));
message.replace(F("<"), F("%3C"));
message.replace(F(">"), F("%3E"));
}
snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("<r><i>%d</i><j>%d</j><l>"), web_log_index, last_reset_web_log_flag);
message.replace(F("}9"), mqtt_data); // Save to load here
message += F("</l></r>");
message += F("\1");
WebServer->send(200, FPSTR(HDR_CTYPE_XML), message);
}