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https://github.com/qpdf/qpdf.git
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5d4cad9c02
Significantly improve the code's use of off_t for file offsets, size_t for memory sizes, and integer types in cases where there has to be compatibility with external interfaces. Rework sections of the code that would have prevented qpdf from working on files larger than 2 (or maybe 4) GB in size.
57 lines
1.0 KiB
C++
57 lines
1.0 KiB
C++
#include <qpdf/Pl_RC4.hh>
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#include <qpdf/QUtil.hh>
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Pl_RC4::Pl_RC4(char const* identifier, Pipeline* next,
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unsigned char const* key_data, int key_len,
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size_t out_bufsize) :
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Pipeline(identifier, next),
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out_bufsize(out_bufsize),
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rc4(key_data, key_len)
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{
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this->outbuf = new unsigned char[out_bufsize];
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}
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Pl_RC4::~Pl_RC4()
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{
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if (this->outbuf)
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{
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delete [] this->outbuf;
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this->outbuf = 0;
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}
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}
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void
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Pl_RC4::write(unsigned char* data, size_t len)
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{
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if (this->outbuf == 0)
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{
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throw std::logic_error(
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this->identifier +
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": Pl_RC4: write() called after finish() called");
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}
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size_t bytes_left = len;
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unsigned char* p = data;
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while (bytes_left > 0)
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{
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size_t bytes =
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(bytes_left < this->out_bufsize ? bytes_left : out_bufsize);
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bytes_left -= bytes;
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rc4.process(p, (int)bytes, outbuf);
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p += bytes;
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getNext()->write(outbuf, bytes);
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}
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}
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void
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Pl_RC4::finish()
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{
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if (this->outbuf)
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{
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delete [] this->outbuf;
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this->outbuf = 0;
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}
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this->getNext()->finish();
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}
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