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litle fix in utils trim

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+ added 2 functions to check script output
+ created a html page with 4 forms for tests
+ created 2 cpp forms, with and without creating header content-length
This commit is contained in:
Hugo LAMY
2022-08-15 00:24:08 +02:00
parent d663a4c7e6
commit f6f63931ad
12 changed files with 385 additions and 73 deletions
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srcs/cgi-bin/cgi.cpp
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114
srcs/cgi-bin/cgi_cpp.cpp Normal file
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@@ -0,0 +1,114 @@
# include <iostream>
# include <string>
# include <sstream>
# include <vector>
# include <stdlib.h> // getenv
# define CR "\r"
# define LF "\n"
# define CRLF CR LF
# define NPOS std::string::npos
std::string trim(std::string str, char del)
{
size_t pos;
// delete leadings del
pos = str.find_first_not_of(del);
if (pos == NPOS)
pos = str.size();
str = str.substr(pos);
// delete trailing del
pos = str.find_last_not_of(del);
if (pos != NPOS)
str = str.substr(0, pos + 1);
return str;
}
std::vector<std::string>
split(const std::string & input, std::string delim, char ctrim = '\0')
{
std::vector<std::string> split_str;
std::string tmp;
size_t start = 0;
size_t end = 0;
size_t len = 0;
while (end != NPOS)
{
end = input.find(delim, start);
len = end - start;
if (end == NPOS)
len = end;
tmp = input.substr(start, len);
if (ctrim != '\0')
tmp = trim(tmp, ctrim);
if (tmp.size() != 0)
split_str.push_back( tmp );
start = end + delim.size();
}
return split_str;
}
int main (int ac, char **av, char **en)
{
std::vector<std::string> split_str;
std::vector<std::string> sub_split_str;
std::vector<std::string>::const_iterator it;
char * tmp;
std::string input;
std::string http_header;
std::string http_body;
std::ostringstream strs;
size_t pos;
std::cin >> input;
http_header = "Content-Type: text/html; charset=UTF-8" CRLF;
http_header += "Content-Length: ";
http_body = "\
<!DOCTYPE html>\
<html>\
<head>\
<title>CGI</title>\
</head>\
<body>\
<h2>cgi</h2>\
";
http_body += "<h3>";
tmp = getenv("REQUEST_METHOD");
if (tmp != NULL)
http_body += tmp;
else
http_body = "method not foud";
http_body += "</h3>";
split_str = split(input, "&");
for (it = split_str.begin(); it != split_str.end(); ++it)
{
sub_split_str = split(*it, "=");
http_body += "<h3>";
http_body += sub_split_str[0];
http_body += "</h3>";
http_body += "<p>";
http_body += sub_split_str[1];
http_body += "</p>";
}
http_body += "\
</body>\
</html>\
";
strs << http_body.size();
http_header += strs.str();
http_header += CRLF CRLF;
std::cout << http_header << CRLF CRLF << http_body;
return 0;
}

133
srcs/cgi-bin/cgi_cpp_content_length.cpp Normal file
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@@ -0,0 +1,133 @@
# include <iostream>
# include <string>
# include <sstream>
# include <vector>
# include <stdlib.h> // getenv
# define CR "\r"
# define LF "\n"
# define CRLF CR LF
# define NPOS std::string::npos
std::string trim(std::string str, char del)
{
size_t pos;
// delete leadings del
pos = str.find_first_not_of(del);
if (pos == NPOS)
pos = str.size();
str = str.substr(pos);
// delete trailing del
pos = str.find_last_not_of(del);
if (pos != NPOS)
str = str.substr(0, pos + 1);
return str;
}
std::vector<std::string>
split(const std::string & input, std::string delim, char ctrim = '\0')
{
std::vector<std::string> split_str;
std::string tmp;
size_t start = 0;
size_t end = 0;
size_t len = 0;
while (end != NPOS)
{
end = input.find(delim, start);
len = end - start;
if (end == NPOS)
len = end;
tmp = input.substr(start, len);
if (ctrim != '\0')
tmp = trim(tmp, ctrim);
if (tmp.size() != 0)
split_str.push_back( tmp );
start = end + delim.size();
}
return split_str;
}
int main (int ac, char **av, char **en) {
std::vector<std::string> split_str;
std::vector<std::string> sub_split_str;
std::vector<std::string>::const_iterator it;
char * tmp;
std::string output;
std::ostringstream strs;
size_t pos;
std::cout << "Content-Type: text/html; charset=UTF-8" << CRLF CRLF;
std::cout
<< "<!DOCTYPE html>"
<< "<html>"
<< "<head>"
<< " <title>CGI</title>"
<< "</head>"
<< "<body>"
<< " <h2>cgi</h2>"
<< " <h3>";
tmp = getenv("REQUEST_METHOD");
if (tmp != NULL)
output = tmp;
else
output = "method not foud";
std::cout
<< output
<< " </h3>"
<< " <h3>http-request-body-message content :</h3>";
std::cin >> output;
split_str = split(output, "&");
output.clear();
for (it = split_str.begin(); it != split_str.end(); ++it)
{
sub_split_str = split(*it, "=");
std::cout
<< "<p>"
<< sub_split_str[0]
<< " : "
<< sub_split_str[1]
<< "</p>";
}
tmp = getenv("QUERY_STRING");
if (tmp == NULL)
std::cout << "query not foud";
std::cout
<< " <h3>http-uri-query content :</h3>";
output = tmp;
split_str = split(output, "&");
output.clear();
for (it = split_str.begin(); it != split_str.end(); ++it)
{
sub_split_str = split(*it, "=");
std::cout
<< "<h3>"
<< sub_split_str[0]
<< "</h3>"
<< "<p>"
<< sub_split_str[1]
<< "</p>";
}
std::cout
<< "</body>"
<< "</html>";
return 0;
}

2
srcs/utils.cpp
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@@ -226,7 +226,7 @@ std::string
begin = str.rfind(delim, pos);
if (begin == NPOS)
begin = 0;
else
else if (begin < pos)
begin += delim.size();
end = str.find(delim, pos);

2
srcs/webserv/Webserv.hpp
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@@ -114,6 +114,8 @@ class Webserv
void _check_script_output(Client *client, std::string & output);
void _check_script_status(Client *client, std::string & output);
void _check_script_fields(Client *client, std::string & output);
void _add_script_body_length_header(std::string & output);
void _remove_body_leading_empty_lines(std::string & output);
// epoll_update.cpp
int _epoll_update(int fd, uint32_t events, int op);
int _epoll_update(int fd, uint32_t events, int op, void *ptr);

68
srcs/webserv/cgi_script.cpp
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@@ -140,8 +140,6 @@ std::string Webserv::_exec_script(Client *client, char **env)
std::string body = client->get_rq_body();
int fd_in[2];
int fd_out[2];
int save_in = dup(STDIN_FILENO);
int save_out = dup(STDOUT_FILENO);
std::string path;
pipe(fd_in);
@@ -150,7 +148,7 @@ std::string Webserv::_exec_script(Client *client, char **env)
pid = fork();
if (pid == -1)
std::cerr << "fork crashed" << std::endl;
else if (pid == 0)
else if (pid == 0) // child
{
close(FD_WR_TO_CHLD);
close(FD_RD_FR_CHLD);
@@ -162,9 +160,10 @@ std::string Webserv::_exec_script(Client *client, char **env)
// for tests execve crash :
//execve("wrong", nll, env);
std::cerr << "execve crashed.\n";
// TODO HUGO : check errno
}
else
else //parent
{
close(FD_RD_FR_PRNT);
close(FD_WR_TO_PRNT);
@@ -182,9 +181,7 @@ std::string Webserv::_exec_script(Client *client, char **env)
}
if (script_output.empty())
script_output = "Status: 500\r\n\r\n";
dup2(save_in, STDIN_FILENO);
dup2(save_out, STDOUT_FILENO);
return script_output;
}
@@ -192,6 +189,8 @@ void Webserv::_check_script_output(Client *client, std::string & output)
{
_check_script_status(client, output);
_check_script_fields(client, output);
_add_script_body_length_header(output);
_remove_body_leading_empty_lines(output);
// _check_script_empty_lines(client, output);
// _check_script_space_colons(client, output);
// _check_script_new_lines(client, output);
@@ -248,3 +247,58 @@ void Webserv::_check_script_fields(Client *client, std::string & output)
}
}
void Webserv::_remove_body_leading_empty_lines(std::string & output)
{
size_t pos;
size_t pos_empty;
pos = output.find(CRLF CRLF);
if (pos == NPOS)
return;
pos += CRLF_SIZE * 2;
pos_empty = pos;
while (pos_empty == pos)
{
pos = output.find(CRLF, pos);
if (pos == pos_empty)
extract_line(output, pos, CRLF);
}
}
void Webserv::_add_script_body_length_header(std::string & output)
{
std::map<std::string, std::string> field;
std::map<std::string, std::string>::iterator it;
std::stringstream str_len;
std::string tmp;
size_t pos;
size_t len;
pos = output.find(CRLF CRLF);
if (pos != NPOS)
tmp = output.substr(pos + CRLF_SIZE);
len = tmp.size();
str_len << len;
// put script headers in map
tmp = output;
pos = tmp.find(CRLF CRLF);
if (pos != NPOS)
tmp.erase(pos);
::parse_http_headers(tmp, field);
// case insensitive search in map for "Content-Length"
tmp = "Content-Length";
for (it = field.begin(); it != field.end(); ++it)
{
if (str_tolower(it->first) == str_tolower(tmp))
{
pos = output.find(it->first);
::extract_line(output, pos, CRLF);
}
}
tmp += ": ";
tmp += str_len.str();
tmp += CRLF;
output.insert(0, tmp);
}

17
srcs/webserv/parsing_message_http.cpp
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@@ -1,17 +0,0 @@
#include "parsing_message_http.hpp"
std::string
parse_http_body(std::string message)
{
std::string body;
size_t pos;
pos = message.find(CRLF CRLF);
pos += std::string(CRLF CRLF).size();
// TODO: copying just like that might fail in case of binary or images
body = message.substr(pos);
return body;
}

32
srcs/webserv/parsing_message_http.hpp
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@@ -1,32 +0,0 @@
#ifndef PARSING_MESSAGE_HTTP_HPP
# define PARSING_MESSAGE_HTTP_HPP
# include <iostream>
# include <string>
# include <vector>
# include <map>
# include "utils.hpp"
std::map<std::string, std::string>
parse_http_headers (
std::string headers,
std::map<std::string, std::string> fields )
std::string
parse_http_body(std::string message);
// http message structure :
//
// start-line
// request-line
// method SP target SP version
// response-line
// version SP status SP reason
// header-fields
// name ":" SP value
// CRLF
// body
#endif