[thirdparty/git.git] / http.h

#ifndef HTTP_H
#define HTTP_H

#include "cache.h"

#include <curl/curl.h>
#include <curl/easy.h>

#include "strbuf.h"

/*
 * We detect based on the cURL version if multi-transfer is
 * usable in this implementation and define this symbol accordingly.
 * This is not something Makefile should set nor users should pass
 * via CFLAGS.
 */
#undef USE_CURL_MULTI

#if LIBCURL_VERSION_NUM >= 0x071000
#define USE_CURL_MULTI
#define DEFAULT_MAX_REQUESTS 5
#endif

#if LIBCURL_VERSION_NUM < 0x070704
#define curl_global_cleanup() do { /* nothing */ } while(0)
#endif
#if LIBCURL_VERSION_NUM < 0x070800
#define curl_global_init(a) do { /* nothing */ } while(0)
#endif

#if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000)
#define NO_CURL_EASY_DUPHANDLE
#endif

#if LIBCURL_VERSION_NUM < 0x070a03
#define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
#endif

struct slot_results
{
	CURLcode curl_result;
	long http_code;
};

struct active_request_slot
{
	CURL *curl;
	FILE *local;
	int in_use;
	CURLcode curl_result;
	long http_code;
	int *finished;
	struct slot_results *results;
	void *callback_data;
	void (*callback_func)(void *data);
	struct active_request_slot *next;
};

struct buffer
{
	struct strbuf buf;
	size_t posn;
};

/* Curl request read/write callbacks */
extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb,
			   struct buffer *buffer);
extern size_t fwrite_buffer(const void *ptr, size_t eltsize,
			    size_t nmemb, struct strbuf *buffer);
extern size_t fwrite_null(const void *ptr, size_t eltsize,
			  size_t nmemb, struct strbuf *buffer);

/* Slot lifecycle functions */
extern struct active_request_slot *get_active_slot(void);
extern int start_active_slot(struct active_request_slot *slot);
extern void run_active_slot(struct active_request_slot *slot);
extern void finish_all_active_slots(void);
extern void release_active_slot(struct active_request_slot *slot);

#ifdef USE_CURL_MULTI
extern void fill_active_slots(void);
extern void add_fill_function(void *data, int (*fill)(void *));
extern void step_active_slots(void);
#endif

extern void http_init(void);
extern void http_cleanup(void);

extern int data_received;
extern int active_requests;

extern char curl_errorstr[CURL_ERROR_SIZE];

static inline int missing__target(int code, int result)
{
	return	/* file:// URL -- do we ever use one??? */
		(result == CURLE_FILE_COULDNT_READ_FILE) ||
		/* http:// and https:// URL */
		(code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
		/* ftp:// URL */
		(code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
		;
}

#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)

extern int http_fetch_ref(const char *base, const char *ref, unsigned char *sha1);

#endif /* HTTP_H */
Commit	Line	Data
29508e1e NH	1	#ifndef HTTP_H
	2	#define HTTP_H
	3
	4	#include "cache.h"
	5
	6	#include <curl/curl.h>
	7	#include <curl/easy.h>
	8
028c2976 MH	9	#include "strbuf.h"
028c2976 MH	10
4f5f998f JH	11	/*
	12	* We detect based on the cURL version if multi-transfer is
	13	* usable in this implementation and define this symbol accordingly.
	14	* This is not something Makefile should set nor users should pass
	15	* via CFLAGS.
	16	*/
	17	#undef USE_CURL_MULTI
	18
9cf04301	19	#if LIBCURL_VERSION_NUM >= 0x071000
29508e1e NH	20	#define USE_CURL_MULTI
	21	#define DEFAULT_MAX_REQUESTS 5
	22	#endif
	23
	24	#if LIBCURL_VERSION_NUM < 0x070704
	25	#define curl_global_cleanup() do { /* nothing */ } while(0)
	26	#endif
	27	#if LIBCURL_VERSION_NUM < 0x070800
	28	#define curl_global_init(a) do { /* nothing */ } while(0)
	29	#endif
	30
500ebb01	31	#if (LIBCURL_VERSION_NUM < 0x070c04) \|\| (LIBCURL_VERSION_NUM == 0x071000)
29508e1e NH	32	#define NO_CURL_EASY_DUPHANDLE
	33	#endif
	34
c774b2dc AH	35	#if LIBCURL_VERSION_NUM < 0x070a03
	36	#define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
	37	#endif
	38
c8568e13 NH	39	struct slot_results
	40	{
	41	CURLcode curl_result;
	42	long http_code;
	43	};
	44
29508e1e NH	45	struct active_request_slot
	46	{
	47	CURL *curl;
	48	FILE *local;
	49	int in_use;
	50	CURLcode curl_result;
	51	long http_code;
baa7b67d	52	int *finished;
c8568e13	53	struct slot_results *results;
29508e1e NH	54	void *callback_data;
	55	void (callback_func)(void data);
	56	struct active_request_slot *next;
	57	};
	58
	59	struct buffer
	60	{
028c2976 MH	61	struct strbuf buf;
028c2976 MH	62	size_t posn;
29508e1e NH	63	};
	64
	65	/* Curl request read/write callbacks */
	66	extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb,
	67	struct buffer *buffer);
	68	extern size_t fwrite_buffer(const void *ptr, size_t eltsize,
028c2976	69	size_t nmemb, struct strbuf *buffer);
29508e1e	70	extern size_t fwrite_null(const void *ptr, size_t eltsize,
028c2976	71	size_t nmemb, struct strbuf *buffer);
29508e1e NH	72
	73	/* Slot lifecycle functions */
	74	extern struct active_request_slot *get_active_slot(void);
	75	extern int start_active_slot(struct active_request_slot *slot);
	76	extern void run_active_slot(struct active_request_slot *slot);
	77	extern void finish_all_active_slots(void);
53f31389	78	extern void release_active_slot(struct active_request_slot *slot);
29508e1e NH	79
	80	#ifdef USE_CURL_MULTI
	81	extern void fill_active_slots(void);
fc57b6aa	82	extern void add_fill_function(void data, int (fill)(void *));
29508e1e NH	83	extern void step_active_slots(void);
	84	#endif
	85
	86	extern void http_init(void);
	87	extern void http_cleanup(void);
	88
	89	extern int data_received;
	90	extern int active_requests;
	91
29508e1e NH	92	extern char curl_errorstr[CURL_ERROR_SIZE];
29508e1e NH	93
e8dc37e0 MH	94	static inline int missing__target(int code, int result)
	95	{
	96	return /* file:// URL -- do we ever use one??? */
	97	(result == CURLE_FILE_COULDNT_READ_FILE) \|\|
	98	/* http:// and https:// URL */
	99	(code == 404 && result == CURLE_HTTP_RETURNED_ERROR) \|\|
	100	/* ftp:// URL */
	101	(code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
	102	;
	103	}
	104
	105	#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
	106
d7e92806 MH	107	extern int http_fetch_ref(const char base, const char ref, unsigned char *sha1);
d7e92806 MH	108
29508e1e	109	#endif /* HTTP_H */