detectors/slsDetectorPackage
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This commit is contained in:
maliakal_d
2021-09-10 15:35:30 +02:00
parent a657450035
commit 3bcfb2291a
1 changed files with 13 additions and 5 deletions
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18
slsDetectorServers/slsDetectorServer/src/common.c
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@ -215,11 +215,19 @@ int verifyChecksumFromFile(char *mess, char *clientChecksum, char *fname, ssize_
return FAIL;
}
const int readUnitSize = 128;
char buf[readUnitSize];
buf[0]=0xf;
ssize_t bytes = 1;
ssize_t totalBytesRead = bytes;
char buf[readUnitSize + 1];
bytes = fread(buf, 1, readUnitSize + 1, fp);
// the first time, extra bytes are read
ssize_t totalBytesRead = bytes - 1;
char lastByte = buf[0];
// bytes = 128
while (bytes > 0) {
buf[0] = lastbyte;
// shift by 4 bits to the left
for (int i = 0; i < bytes; ++i) {
buf[i] = ((buf[i] & 0xf) << 4) + ((buf[i + 1] >> 4) & 0xf);
}
lastbyte = buf[bytes];
if (!MD5_Update(&c, buf, bytes)) {
fclose(fp);
strcpy(mess, "Unable to calculate checksum (MD5_Update)\n");
@ -231,7 +239,7 @@ int verifyChecksumFromFile(char *mess, char *clientChecksum, char *fname, ssize_
LOG(logINFOBLUE, ("\tReached %lu bytes. Not reading more\n", totalBytesRead));
break;
}
bytes = fread(buf, 1, readUnitSize, fp);
bytes = fread(buf + 1, 1, readUnitSize, fp);
totalBytesRead += bytes;
}
// last null character (if size does not match)