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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_transports_httpclient_h__
#define INCLUDE_transports_httpclient_h__
#include "common.h"
#include "net.h"
#define GIT_HTTP_STATUS_CONTINUE 100
#define GIT_HTTP_STATUS_OK 200
#define GIT_HTTP_MOVED_PERMANENTLY 301
#define GIT_HTTP_FOUND 302
#define GIT_HTTP_SEE_OTHER 303
#define GIT_HTTP_TEMPORARY_REDIRECT 307
#define GIT_HTTP_PERMANENT_REDIRECT 308
#define GIT_HTTP_STATUS_UNAUTHORIZED 401
#define GIT_HTTP_STATUS_PROXY_AUTHENTICATION_REQUIRED 407
typedef struct git_http_client git_http_client;
/** Method for the HTTP request */
typedef enum {
GIT_HTTP_METHOD_GET,
GIT_HTTP_METHOD_POST,
GIT_HTTP_METHOD_CONNECT
} git_http_method;
/** An HTTP request */
typedef struct {
git_http_method method; /**< Method for the request */
git_net_url *url; /**< Full request URL */
git_net_url *proxy; /**< Proxy to use */
/* Headers */
const char *accept; /**< Contents of the Accept header */
const char *content_type; /**< Content-Type header (for POST) */
git_credential *credentials; /**< Credentials to authenticate with */
git_credential *proxy_credentials; /**< Credentials for proxy */
git_strarray *custom_headers; /**< Additional headers to deliver */
/* To POST a payload, either set content_length OR set chunked. */
size_t content_length; /**< Length of the POST body */
unsigned chunked : 1, /**< Post with chunking */
expect_continue : 1; /**< Use expect/continue negotiation */
} git_http_request;
typedef struct {
int status;
/* Headers */
char *content_type;
size_t content_length;
char *location;
/* Authentication headers */
unsigned server_auth_schemetypes; /**< Schemes requested by remote */
unsigned server_auth_credtypes; /**< Supported cred types for remote */
unsigned proxy_auth_schemetypes; /**< Schemes requested by proxy */
unsigned proxy_auth_credtypes; /**< Supported cred types for proxy */
unsigned chunked : 1, /**< Response body is chunked */
resend_credentials : 1; /**< Resend with authentication */
} git_http_response;
typedef struct {
/** Certificate check callback for the remote */
git_transport_certificate_check_cb server_certificate_check_cb;
void *server_certificate_check_payload;
/** Certificate check callback for the proxy */
git_transport_certificate_check_cb proxy_certificate_check_cb;
void *proxy_certificate_check_payload;
} git_http_client_options;
/**
* Create a new httpclient instance with the given options.
*
* @param out pointer to receive the new instance
* @param opts options to create the client with or NULL for defaults
*/
extern int git_http_client_new(
git_http_client **out,
git_http_client_options *opts);
/*
* Sends a request to the host specified by the request URL. If the
* method is POST, either the content_length or the chunked flag must
* be specified. The body should be provided in subsequent calls to
* git_http_client_send_body.
*
* @param client the client to write the request to
* @param request the request to send
*/
extern int git_http_client_send_request(
git_http_client *client,
git_http_request *request);
/*
* After sending a request, there may already be a response to read --
* either because there was a non-continue response to an expect: continue
* request, or because the server pipelined a response to us before we even
* sent the request. Examine the state.
*
* @param client the client to examine
* @return true if there's already a response to read, false otherwise
*/
extern bool git_http_client_has_response(git_http_client *client);
/**
* Sends the given buffer to the remote as part of the request body. The
* request must have specified either a content_length or the chunked flag.
*
* @param client the client to write the request body to
* @param buffer the request body
* @param buffer_len number of bytes of the buffer to send
*/
extern int git_http_client_send_body(
git_http_client *client,
const char *buffer,
size_t buffer_len);
/**
* Reads the headers of a response to a request. This will consume the
* entirety of the headers of a response from the server. The body (if any)
* can be read by calling git_http_client_read_body. Callers must free
* the response with git_http_response_dispose.
*
* @param response pointer to the response object to fill
* @param client the client to read the response from
*/
extern int git_http_client_read_response(
git_http_response *response,
git_http_client *client);
/**
* Reads some or all of the body of a response. At most buffer_size (or
* INT_MAX) bytes will be read and placed into the buffer provided. The
* number of bytes read will be returned, or 0 to indicate that the end of
* the body has been read.
*
* @param client the client to read the response from
* @param buffer pointer to the buffer to fill
* @param buffer_size the maximum number of bytes to read
* @return the number of bytes read, 0 on end of body, or error code
*/
extern int git_http_client_read_body(
git_http_client *client,
char *buffer,
size_t buffer_size);
/**
* Reads all of the (remainder of the) body of the response and ignores it.
* None of the data from the body will be returned to the caller.
*
* @param client the client to read the response from
* @return 0 or an error code
*/
extern int git_http_client_skip_body(git_http_client *client);
/**
* Examines the status code of the response to determine if it is a
* redirect of any type (eg, 301, 302, etc).
*
* @param response the response to inspect
* @return true if the response is a redirect, false otherwise
*/
extern bool git_http_response_is_redirect(git_http_response *response);
/**
* Frees any memory associated with the response.
*
* @param response the response to free
*/
extern void git_http_response_dispose(git_http_response *response);
/**
* Frees any memory associated with the client. If any sockets are open,
* they will be closed.
*
* @param client the client to free
*/
extern void git_http_client_free(git_http_client *client);
#endif
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