git.uis.cam.ac.uk - uis - git/git.git/blame_incremental

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Commit	Line	Data
	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
	9	#include "strbuf.h"
	10	#include "remote.h"
	11
	12	/*
	13	* We detect based on the cURL version if multi-transfer is
	14	* usable in this implementation and define this symbol accordingly.
	15	* This is not something Makefile should set nor users should pass
	16	* via CFLAGS.
	17	*/
	18	#undef USE_CURL_MULTI
	19
	20	#if LIBCURL_VERSION_NUM >= 0x071000
	21	#define USE_CURL_MULTI
	22	#define DEFAULT_MAX_REQUESTS 5
	23	#endif
	24
	25	#if LIBCURL_VERSION_NUM < 0x070704
	26	#define curl_global_cleanup() do { /* nothing */ } while(0)
	27	#endif
	28	#if LIBCURL_VERSION_NUM < 0x070800
	29	#define curl_global_init(a) do { /* nothing */ } while(0)
	30	#endif
	31
	32	#if (LIBCURL_VERSION_NUM < 0x070c04) \|\| (LIBCURL_VERSION_NUM == 0x071000)
	33	#define NO_CURL_EASY_DUPHANDLE
	34	#endif
	35
	36	#if LIBCURL_VERSION_NUM < 0x070a03
	37	#define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
	38	#endif
	39
	40	#if LIBCURL_VERSION_NUM < 0x070c03
	41	#define NO_CURL_IOCTL
	42	#endif
	43
	44	struct slot_results
	45	{
	46	CURLcode curl_result;
	47	long http_code;
	48	};
	49
	50	struct active_request_slot
	51	{
	52	CURL *curl;
	53	FILE *local;
	54	int in_use;
	55	CURLcode curl_result;
	56	long http_code;
	57	int *finished;
	58	struct slot_results *results;
	59	void *callback_data;
	60	void (callback_func)(void data);
	61	struct active_request_slot *next;
	62	};
	63
	64	struct buffer
	65	{
	66	struct strbuf buf;
	67	size_t posn;
	68	};
	69
	70	/* Curl request read/write callbacks */
	71	extern size_t fread_buffer(void ptr, size_t eltsize, size_t nmemb, void strbuf);
	72	extern size_t fwrite_buffer(const void ptr, size_t eltsize, size_t nmemb, void strbuf);
	73	extern size_t fwrite_null(const void ptr, size_t eltsize, size_t nmemb, void strbuf);
	74	#ifndef NO_CURL_IOCTL
	75	extern curlioerr ioctl_buffer(CURL handle, int cmd, void clientp);
	76	#endif
	77
	78	/* Slot lifecycle functions */
	79	extern struct active_request_slot *get_active_slot(void);
	80	extern int start_active_slot(struct active_request_slot *slot);
	81	extern void run_active_slot(struct active_request_slot *slot);
	82	extern void finish_all_active_slots(void);
	83	extern void release_active_slot(struct active_request_slot *slot);
	84
	85	#ifdef USE_CURL_MULTI
	86	extern void fill_active_slots(void);
	87	extern void add_fill_function(void data, int (fill)(void *));
	88	extern void step_active_slots(void);
	89	#endif
	90
	91	extern struct curl_slist *no_pragma_header;
	92
	93	#define RANGE_HEADER_SIZE 30
	94
	95	extern void http_init(struct remote *remote);
	96	extern void http_cleanup(void);
	97
	98	extern int data_received;
	99	extern int active_requests;
	100	extern int http_is_verbose;
	101
	102	extern char curl_errorstr[CURL_ERROR_SIZE];
	103
	104	static inline int missing__target(int code, int result)
	105	{
	106	return /* file:// URL -- do we ever use one??? */
	107	(result == CURLE_FILE_COULDNT_READ_FILE) \|\|
	108	/* http:// and https:// URL */
	109	(code == 404 && result == CURLE_HTTP_RETURNED_ERROR) \|\|
	110	/* ftp:// URL */
	111	(code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
	112	;
	113	}
	114
	115	#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
	116
	117	extern int http_fetch_ref(const char base, struct ref ref);
	118
	119	#endif /* HTTP_H */