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Compute hashes in File Browser

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Offline dmitrys

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Compute hashes in File Browser
« on: 23 / June / 2017, 15:48:52 »
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Accessible via the file popup menu. Computes the following:
  • CRC-16
  • CRC-32
  • MD5
  • SHA-1
  • SHA-256
  • SHA-384
  • SHA-512
Source.

Edit: Added SHA-512.
Edit 2: Fixed truncation.
Edit 3: Added SHA-384.
Edit 4: Added CRC-32.
Edit 5: Added CRC-16.
« Last Edit: 23 / June / 2017, 21:09:39 by dmitrys »
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Offline dmitrys

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Re: Compute hashes in File Browser
« Reply #1 on: 23 / June / 2017, 20:34:09 »
I tried adding CRC-64, but got this:

Quote
elf2flt unknown symbol: '__aeabi_llsr'

How can I work around it?
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Offline reyalp

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Re: Compute hashes in File Browser
« Reply #2 on: 23 / June / 2017, 22:55:00 »
Quote from: dmitrys on 23 / June / 2017, 20:34:09
I tried adding CRC-64, but got this:

Quote
elf2flt unknown symbol: '__aeabi_llsr'

How can I work around it?
See module_exportlist_eabi.inc and module_exportlist_elf.inc

Note the equivalent elf function probably has a different name, so you'll need to build with an elf compiler to find out. (we should probably drop ELF support at this point...)
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Offline dmitrys

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Re: Compute hashes in File Browser
« Reply #3 on: 23 / June / 2017, 23:39:36 »
Quote from: reyalp on 23 / June / 2017, 22:55:00
See module_exportlist_eabi.inc and module_exportlist_elf.inc

Note the equivalent elf function probably has a different name, so you'll need to build with an elf compiler to find out. (we should probably drop ELF support at this point...)

Nope. I guess the camera doesn't support 64-bit operations...

Speaking of compiler prefixes, any particular reason this wasn't merged?
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Offline reyalp

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Re: Compute hashes in File Browser
« Reply #4 on: 24 / June / 2017, 00:50:02 »
Quote from: dmitrys on 23 / June / 2017, 23:39:36
Nope. I guess the camera doesn't support 64-bit operations...
It's not a matter of what the camera supports, neither gcc nor elf2flt know anything about that.

Did you do a full build (make clean all)?
« Last Edit: 24 / June / 2017, 19:21:52 by reyalp »
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Offline reyalp

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Re: Compute hashes in File Browser
« Reply #5 on: 24 / June / 2017, 00:55:36 »
Quote from: dmitrys on 23 / June / 2017, 23:39:36
Speaking of compiler prefixes, any particular reason this wasn't merged?
If people want changes in the official svn, they need to post them here, not on random personal github repos.
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Offline philmoz

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Re: Compute hashes in File Browser
« Reply #6 on: 24 / June / 2017, 02:05:19 »
Quote from: dmitrys on 23 / June / 2017, 15:48:52
Accessible via the file popup menu. Computes the following:
  • CRC-16
  • CRC-32
  • MD5
  • SHA-1
  • SHA-256
  • SHA-384
  • SHA-512
Source.

Edit: Added SHA-512.
Edit 2: Fixed truncation.
Edit 3: Added SHA-384.
Edit 4: Added CRC-32.
Edit 5: Added CRC-16.

Ummm - why?

Phil.
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Offline dmitrys

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Re: Compute hashes in File Browser
« Reply #7 on: 24 / June / 2017, 12:02:01 »
Quote from: reyalp on 24 / June / 2017, 00:50:02
It's not a matter of what the camera supports, neither gcc nor elf2flt no anything about that.

I'm sorry I didn't clarify. The code would build, but the File Browser won't start.

Quote
Did you do a full build (make clean all)?

I'm assuming I don't have to re-upload DISKBOOT.BIN, since this is an assembly command. Am I wrong?
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Offline dmitrys

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Re: Compute hashes in File Browser
« Reply #8 on: 24 / June / 2017, 12:03:07 »
Quote from: reyalp on 24 / June / 2017, 00:55:36
If people want changes in the official svn, they need to post them here, not on random personal github repos.

If I post this as a patch, will it be accepted?
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Offline dmitrys

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Re: Compute hashes in File Browser
« Reply #9 on: 24 / June / 2017, 12:08:22 »
Quote from: philmoz on 24 / June / 2017, 02:05:19
Ummm - why?

Phil.

That's practically a no-brainer. md5 and sha1 were already there for eyefi, crc32 was a part of packfi2, and I already had sha2 adapted for the metadata generators. I picked crc16 from the Linux kernel.

I think this feature is at least as useful as "Replace CHDK" (which BTW happens to corrupt DISKBOOT.BIN if source == target).
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