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Trying to implement gzip decompression of request body #11

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26 changes: 21 additions & 5 deletions stream_parser.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,8 @@ stream_parser::stream_parser(const pcre *url_filter_re, const pcre_extra *url_fi
url_filter_re(url_filter_re),
url_filter_extra(url_filter_extra),
output_path(output_path),
gzip_flag(false),
gzip_response_flag(false),
gzip_request_flag(false),
dump_flag(-1) {
std::memset(&next_seq, 0, sizeof next_seq);
std::memset(&ts_usc, 0, sizeof ts_usc);
Expand Down Expand Up @@ -109,7 +110,11 @@ int stream_parser::on_header_value(http_parser *parser, const char *at, size_t l
stream_parser *self = reinterpret_cast<stream_parser *>(parser->data);
if (parser->type == HTTP_RESPONSE) {
if (self->temp_header_field == "content-encoding" && std::strstr(at, "gzip")) {
self->gzip_flag = true;
self->gzip_response_flag = true;
}
} else if (parser->type == HTTP_REQUEST) {
if (self->temp_header_field == "content-encoding" && std::strstr(at, "gzip")) {
self->gzip_request_flag = true;
}
} else {
if (self->temp_header_field == "host") {
Expand Down Expand Up @@ -170,7 +175,7 @@ bool stream_parser::match_url(const std::string &url) {
void stream_parser::dump_http_request() {
if (dump_flag != 0) return;

if (gzip_flag && !body[HTTP_RESPONSE].empty()) {
if (gzip_response_flag && !body[HTTP_RESPONSE].empty()) {
std::string new_body;
if (gzip_decompress(body[HTTP_RESPONSE], new_body)) {
body[HTTP_RESPONSE].assign(new_body);
Expand Down Expand Up @@ -224,7 +229,8 @@ void stream_parser::dump_http_request() {
body_100_continue.clear();
host.clear();
std::memset(&ts_usc, 0, sizeof ts_usc);
gzip_flag = false;
gzip_response_flag = false;
gzip_request_flag = false;
dump_flag = 1;
}

Expand All @@ -250,7 +256,17 @@ std::ostream &operator<<(std::ostream &out, const stream_parser &parser) {
if (!parser.body_100_continue.empty()) {
out << parser.body_100_continue;
}
if (!is_atty || is_plain_text(parser.body[HTTP_REQUEST])) {
if(parser.gzip_request_flag) {
std::string non_const_request_body;
std::string new_body;
non_const_request_body.assign(parser.body[HTTP_REQUEST]);
if (gzip_decompress(non_const_request_body, new_body)) {
out << new_body;
} else {
out << ANSI_COLOR_RED << "[decompress error]" << ANSI_COLOR_RESET << std::endl;
}

} else if (!is_atty || is_plain_text(parser.body[HTTP_REQUEST])) {
out << parser.body[HTTP_REQUEST];
} else {
out << ANSI_COLOR_RED << "[binary request body] (size:" << parser.body[HTTP_REQUEST].size() << ")"
Expand Down
3 changes: 2 additions & 1 deletion stream_parser.h
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,8 @@ class stream_parser {
std::string body_100_continue;

std::string temp_header_field;
bool gzip_flag;
bool gzip_response_flag;
bool gzip_request_flag;
int dump_flag;

uint32_t fin_nxtseq[HTTP_BOTH];
Expand Down