I write the websocket server via libwebsocket. I need Cookie field to valid user. there is a array named lextable[] for parse http header . I don't know how to modify lextable for Cookie filed.
Ok, go to "lib" directory in your libwebsockets dir. Find the "minilex.c" file, open it with your favorite text editor. At the beginning of the file you will see the "set" string array. You only need to add the line "Cookie: " at the end.
The next step is compiling the program "minilex.c" with command gcc minilex.c -o minilex.
When the compilation is finished, run the binary file and you will see a console consisting of two-dimensional array with the HEX codes of letters and their positions.
Copy-past it into "parsers.c" file.
Related
I am using ubuntu and i have used a library named as ICLI (interactive command line interface) which lets one build his own prompt. and i want whatever command i write in this prompt to be stored as JSON.
One way of doing so is file write, for which you can try
with open("data_file.json", "w") as write_file:
json.dump(data, write_file)
Here, data is a variable created before writing these lines. data contains whatever information needs to be stored, in JSON format.
I am trying to write a C program that takes in two arguments, either [-url | -phone | -email] and a text file that the user will download from a website.
After the user inputs the flag and the name of the text file, the program is supposed to extract and display the contents based on the regular expression I have developed.
For example, for URL the regex is
/^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/
I am having a hard time figuring out how I can implement such a task. Do I need to use fork()? How exactly can I read the data from the text file and display back results based on the regex?
Here is the example OUTPUT
$ gcc –o minor1 minor1.c
$ ./minor1
Usage:
./minor1 [-url | -email | -phone] input_file
URL CASE SCENARIO:
$./minor1 -url index.html
https://www.web.edu/
...
http://webpreview.web.edu/
...
httpL//policy.web.edu/
Based on the flag and the input file, this is what it is supposed to return
You may use curl to download the file from the web.
How to download a file from a URL in C, as a browser would?
C program for downloading files with curl
Then you can iterate and parse the data to extract the regex pattern of either url, email or phone.
Try to come out with some code yourself and if there is any problem, post what you did, snippet of the code that failed, and explain your own thoughts on why do you think it failed.
Python 3+
This is the error i get
This is my code
I want the user to input some words, then the program should run each word through my two textfiles, if the word exists in any of them, I want the program to add +1 to the positive/negative count list.
Thank you for your help :)
Seems like you have stumbled upon a Decoding error when trying to open one of the input files in the wordlist function. it is usually hard to determine the encoding used for a particular file. so you could :
1.Try opening the file with a different encoding such as ISO-8859-15,etc.
def OpenFile():
try:
with open("My File.txt",mode="r",encoding="IS0-8859-15")
#do process My File
except UnicodeDecodeError:
print("Something went Wrong Try a different file encoding")
else:
#everything was okay, return the required
finally:
# clean up here
2. Look it modules that try and determine the correct encoding for the file such as the chardet module
Install the
chardet module :
sudo pip3 install chardet
you can run it at the command line with your file as the Argument to determine the encoding
cd /path/to/File/
chardetect My\ File.txt
this should return the likely encoding for the given file
3.You can use the chardet module inside your python code however this is recommended in a case where you will be opening a file you do not have access to e.g at a clients computer whom wants to open another specified file
and reopening the same file and redetecting the encoding will cause your program to be slow.
First of all positive_count and negative_count should be integers and not lists. If you wish to count, adding 1 to the list isn't really what you're trying to accomplish.
Second of all, the UnicodeDecodeError is there because the encoding of the underlying file is not utf-8. Did you try utf-16 or utf-16-le? In case you're using Windows, utf-16-le is probably the encoding used unless you're using code-points in which case guessing will be a nightmare.
Could someone help me in writing a program that has to compile all the files in the directory and report error, if any. For which my program has to get the list of all files under the folder with its full path and store it in a temp-table and then it has to loop through the temp table and compile the files.
Below is a very rough start.
Look for more info around the COMPILE statement and the COMPILER system handle in the online help (F1).
Be aware that compiling requires you to have a developer license installed. Without it the COMPILE statement will fail.
DEFINE VARIABLE cDir AS CHARACTER NO-UNDO.
DEFINE VARIABLE cFile AS CHARACTER NO-UNDO FORMAT "x(30)".
ASSIGN
cDir = "c:\temp\".
INPUT FROM OS-DIR(cDir).
REPEAT:
IMPORT cFile.
IF cFile MATCHES "*..p" THEN DO:
COMPILE VALUE(cDir + cFile) SAVE NO-ERROR.
IF COMPILER:ERROR THEN DO:
DISPLAY
cFile
COMPILER:GET-MESSAGE(1) FORMAT "x(60)"
WITH FRAME frame1 WIDTH 300 20 DOWN.
END.
END.
END.
INPUT CLOSE.
Since the comment wouldn't let me paste this much into it... using INPUT FROM OS-DIR returns all of the files and directories under a directory. You can use this information to keep going down the directory tree to find all sub directories
OS-DIR documentation:
Sometimes, rather than reading the contents of a file, you want to read a list of the files in a directory. You can use the OS–DIR option of the INPUT FROM statement for this purpose.
Each line read from OS–DIR contains three values:
*The simple (base) name of the file.
*The full pathname of the file.
*A string value containing one or more attribute characters. These characters indicate the type of the file and its status.
Every file has one of the following attribute characters:
*F — Regular file or FIFO pipe
*D — Directory
*S — Special device
*X — Unknown file type
In addition, the attribute string for each file might contain one or more of the following attribute characters:
*H — Hidden file
*L — Symbolic link
*P — Pipe file
The tokens are returned in the standard ABL format that can be read by the IMPORT or SET statements.
I have run into a problem in one of my Tcl scripts where I am uploading a file from a Windows computer to a Unix server. I would like to get just the original file name from the Windows file and save the new file with the same name. The problem is that [file tail windows_file_name] does not work, it returns the whole file name like "c:\temp\dog.jpg" instead of just "dog.jpg". File tail works correctly on a Unix file name "/usr/tmp/dog.jpg", so for some reason it is not detecting that the file is in Windows format. However Tcl on my Windows computer works correctly for either name format. I am using Tcl 8.4.18, so maybe it is too old? Is there another trick to get it to split correctly?
Thanks
The problem here is that on Windows, both \ and / are valid path separators so long Windows API is concerned (even though only \ is deemed to be "official" on Windows). On the other hand, in POSIX, the only valid path separator is /, and the only two bytes which can't appear in a pathname component are / and \0 (a byte with value 0).
Hence, on a POSIX system, "C:\foo\bar.baz" is a perfectly valid short filename, and running
file normalize {C:\foo\bar.baz}
would yield /path/to/current/dir/C:\foo\bar.baz. By the same logic, [file tail $short_filename] is the same as $short_filename.
The solution is to either do what Glenn Jackman proposed or to somehow pass the short name from the browser via some other means (some JS bound to an appropriate file entry?). Also you could attempt to detect the user's OS from the User-Agent header.
To make Glenn's idea more agnostic to user's platform, you could go like this:
Scan the file name for "/".
If none found, do set fname [string map {\\ /} $fname] then go to the next step.
Use [file tail $fn] to extract the tail name.
It's not very bullet-proof, but supposedly better than nothing.
You could always do [lindex [split $windows_file_name \\] end]