Sacagawea

Sacagawea is a gopher server.

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libsacagawea.so / sacagawea32.dll

• exclusive lock to access to files (even in read-only mode)
• determine file type by calling file with popen (on Linux) or by checking the extension (on Windows)
• map file in memory (will need to do this before sending it, in the server)

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sacagawea(.exe)

These will be coded inside the library, and called by sacagawea(.exe)

• Check the configuration file (sacagawea.conf), then parse command line options
• create sighandler for SIGHUP (on Linux) or listener for console event (on Windows), this will check the configuration file
• spawn sacalogs(.exe) and make a new pipe between the main process and sacalogs

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These will be coded inside sacagawea(.exe)

• bind/listen/select/accept
• spawn new process/thread which will carry on the comunication
• the new process/thread loads the file to send in memory
• send and event/condition variable to sacalogs(.exe)
• always spawn a new thread to send the loaded file to the client

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sacalogs(.exe)

• logFile process which receives information on the operation performed by a pipe (normal pipe)
• it wake up with an event (on Win32), or a condition variable (on Linux)

The saved logs (sacagawea.log) will use the following syntax:

[dd-MM-YYYY hh:mm:ss] file_name, file_size, client's IP:port

For example:

[21-07-2019 15:54:33] mare.jpg, 2048 B, 72.192.10.4:3948

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sacagawea.conf

Regex to find all configuration variables

$regex =~ /([a-zA-Z0-9]+)[ \t]+([a-zA-Z0-9 ]+)(:?\n|$)/;

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