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> ... I have written and continue to write small programs to do this ... Would you mind sharing some of that code? Some of your recent comments on web browser

• 1vuio0pswjnm7 4y ago
  Below is one for PDF. Compile the 052.l file with something like flex -8iCrf $1; cc -O3 -std=c89 -W -Wall -pedantic -I$HOME -pipe lex.yy.c -static -o yy${x%.l}; strip -s yy${x%.l}; test -d yy||mkdir yy; export PATH=$PATH:$HOME/yy; exec mv yy${x%.l} yy; "yy045" is a small program to remove chunked transfer encoding. These programs are to be used in pipelines, something like echo https://www.bezem.de/pdf/ReservedWordsInC.pdf|yy025|nc -vv h1b 80|yy052 >1.pdf "h1b" is a HOSTS file entry for a localhost TLS-enabled forward proxy "yy025" is a small program that generates HTTP. Interestingly I think curl was modified in recent years to detect binary data on stdin. I just tested the following and it extracted the PDF automatically. curl https://www.bezem.de/pdf/ReservedWordsInC.pdf > 1.pdf However, one thing that curl does _not_ do is HTTP/1.1 pipelining. I use pipelining on a daily basis. That is where these programs become useful for me. cat > 052.l /* PDF file carver */ /* PDFs can contain newlines */ /* yy045 removes them so dont use yy045 */ #define echo ECHO #define jmp BEGIN int fileno(FILE *); xa "%PDF-" xb "%%EOF" %s xa %option noyywrap nounput noinput %% {xa} echo;jmp xa; <xa>{xb} echo;jmp 0; <xa>.|\n|\r echo; .|\n %% int main(){ yylex();exit(0) ;} ^D