file_checksum

Name

file_checksum

Auth

yes

Description

Calculates checksums of count bytes at offset from the file descripor fd.

DO NOT use this function to calculate checksums of an entire, unmodified file, use checksumfile instead.

Output

Returns sha1, md5 and size.

size will be equal to count unless bytes past current filesize are requested to be checksummed.

Required

Parameter	Description
fd	int the file descriptor, for which checksums are calculated
count	int count in bytes, for which checksums are calculated
offset	int from where in bytes the checksum calculation starts

Example

{
    result: 0,
    sha1: "SHA-1 checksum",
    md5: "MD5 checksum",
    size: "count of bytes, for which the checksums are calculated"
}

Errors

Code	Description
1000	Log in required.
1007	Invalid or closed file descriptor.
1009	Please provide 'offset'.
1011	Please provide 'count'.
2000	Log in failed.
4000	Too many login tries from this IP address.
5004	Read error. Try reopening the file.