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How does the SQL injection from the “Bobby Tables” XKCD comic work?
...tudent, where the $xxx variable contents was taken directly out of an HTML form, without checking format nor escaping special characters.
So if $firstName contains Robert'); DROP TABLE students; -- the database program will execute the following request directly on the DB:
INSERT INTO 'students' ...
How to use PHP OPCache?
...guration OpCache uses. This includes all ini settings as well as version information and blacklisted files.
var_dump(opcache_get_configuration());
opcache_get_status():
This will return an array with information about the current status of the cache. This information will include things like: th...
Can't escape the backslash with regex?
...kslash.
Depending on the language, you might be able to use a different form of quoting that doesn't parse escape sequences to avoid having to use as many - for instance, in Python:
re.compile(r'\\')
The r in front of the quotes makes it a raw string which doesn't parse backslash escapes.
...
Initializing a struct to 0
...ing point zero) are represented as all zero bits, which is true on all platforms I know about (but the C standard permits implementations where this is false; I know no such implementation).
You could perhaps code myStruct m = {}; or myStruct m = {0}; (even if the first member of myStruct is not a...
IIS: Idle Timeout vs Recycle
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Basic HTTP and Bearer Token Authentication
... @Azngeek Curl does send both the authorization headers when you perform the task. You need to handle it from your server's end. Just run your curl command with both headers with -v param. You'll find that its sending Authorization: Basic Ym9zY236Ym9zY28=, Authorization: Bearer mytoken123 at ...
What's the canonical way to check for type in Python?
...):
See Built-in Functions in the Python Library Reference for relevant information.
One more note: in this case, if you're using Python 2, you may actually want to use:
if isinstance(o, basestring):
because this will also catch Unicode strings (unicode is not a subclass of str; both str and un...
What does the line “#!/bin/sh” mean in a UNIX shell script?
... the operating system will look at the first few bytes of the file. These form the so-called "magic number", which can be used to decide the format of the program and how to execute it.
#! corresponds to the magic number 0x2321 (look it up in an ascii table). When the system sees that the magic n...
Protecting Java Source Code From Being Accessed [closed]
...ata watermarking
This is where you change the file's metadata to contain information. You can embed your name, a hash, etc. in unseen parts of a file, especially EXE's. In NT days, Alternate Data Streams were popular.
Unusual characters
I'll throw this one in just for kicks. An old IRC impersonation...
Swift alert view with OK and Cancel: which button tapped?
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