YAIP/src/response.h
Jonathan Hodgson dd71d26245 Initial https proxy work
The proxy can now sit between a client and a https web server. It does
this by looking for a CONNECT request that conventional proxies use to
open a tunnel between a client and an https server. Instead of opening
an opaque tunnel, yaip immediately sends bacck a "connection
established" response. This tells the client (browser normally) to
proceed and initiate an HTTPS connection.

I use the host that was send in the connect request to set up a fake SSL
server. If we have seen the domain before, we re-use the certificate,
otherwise we generate a new one and sign it using YAIP's built in
certificate authority.

I still need to do work on forwarding the request upstream. This is my
next job. Currently, yaip responds with a valid response of "it worked".

```
$ curl https://example.com --cacert ~/.config/yaip/cert.pem
It worked
```

Notice, we don't get any certificate errors because we are telling curl
to trust the authority that yaip uses
2022-01-30 12:25:57 +00:00

50 lines
1.2 KiB
C

#ifndef RESPONSE_H
#define RESPONSE_H
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include "util.h"
#include "requestresponse.h"
/*
* A struct reperesenting an http request
*/
typedef struct {
// Common versions are: 0.9, 1.0, 1.1, 2.0
float version;
int statusCode;
char *statusMessage;
HeaderList *headers;
void *body;
unsigned int headerLength;
} Response;
Response* newResponse();
/*
* creates the minium viable valid response
*/
void responseBarebones(Response *rsp);
void connectionEstablished(Response *rsp);
char *responseToString(Response *rsp);
/* sets the body of a response to a string
* @param rsp the response
* @param string the string
* @param updateContentLength whether the content-length header should be auto-updated
* Note: if you want to set a binary body, use responseSetBodyRaw
*/
void responseSetBody(Response *rsp, char *string, bool updateContentLength);
// TODO:
//void responseSetBodyRaw(Response *rsp, void *body, size_t size, bool updateContentLength);
void responseAddHeader(Response *rsp, char header[]);
Response* newResponseFromSocket(int socket);
void responseFirstLine( Response *req, char line[] );
void freeResponse( Response *rsp );
#endif /* ifndef REQUEST_H */