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Code Issues Releases Wiki Activity

Fixed byte order when parsing gatway address on BigEndian platforms

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This commit is contained in:
Bryan Roe
2020-08-21 23:45:23 -07:00
parent 7cc0f0c213
commit 105ff1dcb4
2 changed files with 17 additions and 1 deletions
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8
meshcore/meshinfo.c
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@@ -298,6 +298,7 @@ int info_GetDefaultGateway(char* ifname, char** gateway)
struct parser_result_field* p;
struct parser_result* parse2;
struct parser_result_field* p2;
int16_t test = 0x0001;
*gateway = NULL;
len = utilx_readfile2("/proc/net/route", &route);
@@ -320,6 +321,13 @@ int info_GetDefaultGateway(char* ifname, char** gateway)
temp = p2->NextResult->NextResult->data;
for (i = 0; i < r; i++) { (*gateway)[r - (i + 1)] = util_hexToint(temp + (i * 2), 2); }
ILibDestructParserResults(parse2);
if (r == 4 && ((char*)&test)[0] == 0)
{
// Swap Byte Order
int j = ((int*)*gateway)[0];
j = (j & 0x000000FFU) << 24 | (j & 0x0000FF00U) << 8 | (j & 0x00FF0000U) >> 8 | (j & 0xFF000000U) >> 24;
((int*)*gateway)[0] = j;
}
break;
}
}

10
microscript/ILibDuktape_ScriptContainer.c
View File

@@ -2177,7 +2177,15 @@ void ILibDuktape_ScriptContainer_OS_Push(duk_context *ctx, void *chain)
tokens = lines[i].split('\\t');\
if (tokens[headers['Mask']] == '00000000')\
{\
var gw = Buffer.from(tokens[headers['Gateway']], 'hex').readUInt32LE();\
var gw;\
if(require('os').endianness()=='LE')\
{\
gw = Buffer.from(tokens[headers['Gateway']], 'hex').readUInt32LE();\
}\
else\
{\
gw = Buffer.from(tokens[headers['Gateway']], 'hex').readUInt32BE();\
}\
var gwAddr = ((gw >> 24) & 255) + '.' + ((gw >> 16) & 255) + '.' + ((gw >> 8) & 255) + '.' + (gw & 255);\
defaultGateways[tokens[headers['Iface']]] = gwAddr;\
}\