#ifndef HTTP_H #define HTTP_H #include "cache.h" #include <curl/curl.h> #include <curl/easy.h> #include "strbuf.h" #include "remote.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(struct remote *remote); 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 */