Create a PHP normalizer in C

I need to make a C program based on Flex/Bison with two funcionalities:

1. executed as a standalone command:

pnorm <path-to-php/html>

2. Provide a function to other C programs... by example:

int pnorm(char *orig_filename, char *dest_filename) { ....... }

> In this case, the output is to dest_filename, not stdout.

The program should read an HTML/PHP file and print to stdout the result.

The result is normalized version of the PHP code.

The process should be done in 2 steps:



- convert $variable= base64_decode(...) in $variable="<printable characters>"

- convert eval(base64_decode(...) in eval("<php code> (printable characters) ");

- convert eval(mutltiple_functions("...")) in eval("<php code> (printable));

Also consider the "string1" . "string2" posibility as the source string

Where multiple_functions are all possible combinations of:

- base64_decode

- str_rot13

- gzinflate

- gzuncompress

- stripslashes

*1 please note that the resulting PHP code is not to be executed, it is just to be analyzed. It can result with syntactic errors.

*2 Consider that there could be necessary to recursivelly do this job. It means that the base64_decode can result as a new encoded string with another combination of these functions.



Once all strings are replaced with the decoded version, the software should make the next changes to the code:

1. Take off all the comments (Multi line comments and single line comments)

2. Convert all text to lowercase (statements, strings and every text). Remember that PHP source code is UTF-8

3. Convert all strings delimitators to " (double quote)

4. Convert all strings like "ab" . "cd" to "abcd"

5. Convert all strings like "ab" .chr(65) . "cd" to "abAcd" (only with printable characters)

6. convert "ab" . chr(64+1) ."cd" to "abAcd" (for basic operations: +,-,*,^)

7. Convert all strings like "ab\065" and "ab\x41" to "abA" (only with printable characters)

8. Replace all CR,LF,TAB with a single space

9. Remove all repeated spaces. Example: echo "hello"; -> to echo "hello"

10 Remove reduntant spaces after and before parenthesis, braces and comparison ops:

if ( $a == 2 ) { echo "2"; } --> to --> if ($a==2) {echo "2";}

Be careful with:

1. Segmentation faults

2. buffer overrun

3. memory management

Please try not to use but the standard libraries. (accepted are flex,bison,pcre and the standard libraries)

Also pleaseprovide the makefile.

The HTML code (imagine there is PHP embeded in an HTML file) should be lowered case,removed the CR,LF,TAB, removed the comments. Javascript should be treated as HTML code.

Please make me any question if you need.

Please respect the price you give me. Think well before offer.

Habilidades: Programação C, PHP, Arquitetura de software

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( 3 comentários ) Talca, Chile

ID do Projeto: #14082585

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