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s3fs-fuse/src/curl.h
Andrew Gaul 60d456a993 Use scoped enums for acl_t, sse_type_t, and storage_class_t 
This prevents some kinds of implicit conversions.  Also deduplicate
str/from_str logic.  References #1371.
2020-08-20 18:46:18 +09:00

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/*
* s3fs - FUSE-based file system backed by Amazon S3
*
* Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef S3FS_CURL_H_
#define S3FS_CURL_H_
#include <cassert>
#include "psemaphore.h"
#include "types.h"
//----------------------------------------------
// Avoid dependency on libcurl version
//----------------------------------------------
// [NOTE]
// The following symbols (enum) depend on the version of libcurl.
// CURLOPT_TCP_KEEPALIVE 7.25.0 and later
// CURLOPT_SSL_ENABLE_ALPN 7.36.0 and later
// CURLOPT_KEEP_SENDING_ON_ERROR 7.51.0 and later
//
// s3fs uses these, if you build s3fs with the old libcurl,
// substitute the following symbols to avoid errors.
// If the version of libcurl linked at runtime is old,
// curl_easy_setopt results in an error(CURLE_UNKNOWN_OPTION) and
// a message is output.
//
#if defined(HAVE_CURLOPT_TCP_KEEPALIVE) && (HAVE_CURLOPT_TCP_KEEPALIVE == 1)
#define S3FS_CURLOPT_TCP_KEEPALIVE CURLOPT_TCP_KEEPALIVE
#else
#define S3FS_CURLOPT_TCP_KEEPALIVE static_cast<CURLoption>(213)
#endif
#if defined(HAVE_CURLOPT_SSL_ENABLE_ALPN) && (HAVE_CURLOPT_SSL_ENABLE_ALPN == 1)
#define S3FS_CURLOPT_SSL_ENABLE_ALPN CURLOPT_SSL_ENABLE_ALPN
#else
#define S3FS_CURLOPT_SSL_ENABLE_ALPN static_cast<CURLoption>(226)
#endif
#if defined(HAVE_CURLOPT_KEEP_SENDING_ON_ERROR) && (HAVE_CURLOPT_KEEP_SENDING_ON_ERROR == 1)
#define S3FS_CURLOPT_KEEP_SENDING_ON_ERROR CURLOPT_KEEP_SENDING_ON_ERROR
#else
#define S3FS_CURLOPT_KEEP_SENDING_ON_ERROR static_cast<CURLoption>(245)
#endif
//----------------------------------------------
// Symbols
//----------------------------------------------
static const int MIN_MULTIPART_SIZE = 5 * 1024 * 1024;
//----------------------------------------------
// class BodyData
//----------------------------------------------
// memory class for curl write memory callback
//
class BodyData
{
private:
char* text;
size_t lastpos;
size_t bufsize;
private:
bool IsSafeSize(size_t addbytes) const {
return ((lastpos + addbytes + 1) > bufsize ? false : true);
}
bool Resize(size_t addbytes);
public:
BodyData() : text(NULL), lastpos(0), bufsize(0) {}
~BodyData() {
Clear();
}
void Clear(void);
bool Append(void* ptr, size_t bytes);
bool Append(void* ptr, size_t blockSize, size_t numBlocks) {
return Append(ptr, (blockSize * numBlocks));
}
const char* str() const;
size_t size() const {
return lastpos;
}
};
//----------------------------------------------
// Utility structs & typedefs
//----------------------------------------------
typedef std::vector<std::string> etaglist_t;
// Each part information for Multipart upload
struct filepart
{
bool uploaded; // does finish uploading
std::string etag; // expected etag value
int fd; // base file(temporary full file) descriptor
off_t startpos; // seek fd point for uploading
off_t size; // uploading size
etaglist_t* etaglist; // use only parallel upload
int etagpos; // use only parallel upload
filepart() : uploaded(false), fd(-1), startpos(0), size(-1), etaglist(NULL), etagpos(-1) {}
~filepart()
{
clear();
}
void clear(void)
{
uploaded = false;
etag = "";
fd = -1;
startpos = 0;
size = -1;
etaglist = NULL;
etagpos = - 1;
}
void add_etag_list(etaglist_t* list)
{
if(list){
list->push_back(std::string(""));
etaglist = list;
etagpos = list->size() - 1;
}else{
etaglist = NULL;
etagpos = - 1;
}
}
};
// for progress
struct case_insensitive_compare_func
{
bool operator()(const std::string& a, const std::string& b) const {
return strcasecmp(a.c_str(), b.c_str()) < 0;
}
};
typedef std::map<std::string, std::string, case_insensitive_compare_func> mimes_t;
typedef std::pair<double, double> progress_t;
typedef std::map<CURL*, time_t> curltime_t;
typedef std::map<CURL*, progress_t> curlprogress_t;
class S3fsMultiCurl;
//----------------------------------------------
// class CurlHandlerPool
//----------------------------------------------
typedef std::list<CURL*> hcurllist_t;
class CurlHandlerPool
{
public:
explicit CurlHandlerPool(int maxHandlers) : mMaxHandlers(maxHandlers)
{
assert(maxHandlers > 0);
}
bool Init();
bool Destroy();
CURL* GetHandler(bool only_pool);
void ReturnHandler(CURL* hCurl, bool restore_pool);
private:
int mMaxHandlers;
pthread_mutex_t mLock;
hcurllist_t mPool;
};
//----------------------------------------------
// class S3fsCurl
//----------------------------------------------
#include "fdcache.h" // for fdpage_list_t
class S3fsCurl;
// Prototype function for lazy setup options for curl handle
typedef bool (*s3fscurl_lazy_setup)(S3fsCurl* s3fscurl);
typedef std::map<std::string, std::string> iamcredmap_t;
typedef std::map<std::string, std::string> sseckeymap_t;
typedef std::list<sseckeymap_t> sseckeylist_t;
// Class for lapping curl
//
class S3fsCurl
{
friend class S3fsMultiCurl;
private:
enum REQTYPE {
REQTYPE_UNSET = -1,
REQTYPE_DELETE = 0,
REQTYPE_HEAD,
REQTYPE_PUTHEAD,
REQTYPE_PUT,
REQTYPE_GET,
REQTYPE_CHKBUCKET,
REQTYPE_LISTBUCKET,
REQTYPE_PREMULTIPOST,
REQTYPE_COMPLETEMULTIPOST,
REQTYPE_UPLOADMULTIPOST,
REQTYPE_COPYMULTIPOST,
REQTYPE_MULTILIST,
REQTYPE_IAMCRED,
REQTYPE_ABORTMULTIUPLOAD,
REQTYPE_IAMROLE
};
// class variables
static pthread_mutex_t curl_handles_lock;
static struct callback_locks_t {
pthread_mutex_t dns;
pthread_mutex_t ssl_session;
} callback_locks;
static bool is_initglobal_done;
static CurlHandlerPool* sCurlPool;
static int sCurlPoolSize;
static CURLSH* hCurlShare;
static bool is_cert_check;
static bool is_dns_cache;
static bool is_ssl_session_cache;
static long connect_timeout;
static time_t readwrite_timeout;
static int retries;
static bool is_public_bucket;
static acl_t default_acl;
static storage_class_t storage_class;
static sseckeylist_t sseckeys;
static std::string ssekmsid;
static sse_type_t ssetype;
static bool is_content_md5;
static bool is_verbose;
static bool is_dump_body;
static std::string AWSAccessKeyId;
static std::string AWSSecretAccessKey;
static std::string AWSAccessToken;
static time_t AWSAccessTokenExpire;
static bool is_ecs;
static bool is_use_session_token;
static bool is_ibm_iam_auth;
static std::string IAM_cred_url;
static size_t IAM_field_count;
static std::string IAM_token_field;
static std::string IAM_expiry_field;
static std::string IAM_role;
static long ssl_verify_hostname;
static curltime_t curl_times;
static curlprogress_t curl_progress;
static std::string curl_ca_bundle;
static mimes_t mimeTypes;
static std::string userAgent;
static int max_parallel_cnt;
static int max_multireq;
static off_t multipart_size;
static bool is_sigv4;
static bool is_ua; // User-Agent
static bool requester_pays;
// variables
CURL* hCurl;
REQTYPE type; // type of request
std::string path; // target object path
std::string base_path; // base path (for multi curl head request)
std::string saved_path; // saved path = cache key (for multi curl head request)
std::string url; // target object path(url)
struct curl_slist* requestHeaders;
headers_t responseHeaders; // header data by HeaderCallback
BodyData bodydata; // body data by WriteMemoryCallback
BodyData headdata; // header data by WriteMemoryCallback
volatile long LastResponseCode;
const unsigned char* postdata; // use by post method and read callback function.
int postdata_remaining; // use by post method and read callback function.
filepart partdata; // use by multipart upload/get object callback
bool is_use_ahbe; // additional header by extension
int retry_count; // retry count for multipart
FILE* b_infile; // backup for retrying
const unsigned char* b_postdata; // backup for retrying
int b_postdata_remaining; // backup for retrying
off_t b_partdata_startpos; // backup for retrying
ssize_t b_partdata_size; // backup for retrying
int b_ssekey_pos; // backup for retrying
std::string b_ssevalue; // backup for retrying
sse_type_t b_ssetype; // backup for retrying
std::string b_from; // backup for retrying(for copy request)
headers_t b_meta; // backup for retrying(for copy request)
std::string op; // the HTTP verb of the request ("PUT", "GET", etc.)
std::string query_string; // request query string
Semaphore *sem;
pthread_mutex_t *completed_tids_lock;
std::vector<pthread_t> *completed_tids;
s3fscurl_lazy_setup fpLazySetup; // curl options for lazy setting function
public:
// constructor/destructor
explicit S3fsCurl(bool ahbe = false);
~S3fsCurl();
private:
// class methods
static bool InitGlobalCurl(void);
static bool DestroyGlobalCurl(void);
static bool InitShareCurl(void);
static bool DestroyShareCurl(void);
static void LockCurlShare(CURL* handle, curl_lock_data nLockData, curl_lock_access laccess, void* useptr);
static void UnlockCurlShare(CURL* handle, curl_lock_data nLockData, void* useptr);
static bool InitCryptMutex(void);
static bool DestroyCryptMutex(void);
static int CurlProgress(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
static bool LocateBundle(void);
static size_t HeaderCallback(void *data, size_t blockSize, size_t numBlocks, void *userPtr);
static size_t WriteMemoryCallback(void *ptr, size_t blockSize, size_t numBlocks, void *data);
static size_t ReadCallback(void *ptr, size_t size, size_t nmemb, void *userp);
static size_t UploadReadCallback(void *ptr, size_t size, size_t nmemb, void *userp);
static size_t DownloadWriteCallback(void* ptr, size_t size, size_t nmemb, void* userp);
static bool UploadMultipartPostCallback(S3fsCurl* s3fscurl);
static bool CopyMultipartPostCallback(S3fsCurl* s3fscurl);
static bool MixMultipartPostCallback(S3fsCurl* s3fscurl);
static S3fsCurl* UploadMultipartPostRetryCallback(S3fsCurl* s3fscurl);
static S3fsCurl* CopyMultipartPostRetryCallback(S3fsCurl* s3fscurl);
static S3fsCurl* MixMultipartPostRetryCallback(S3fsCurl* s3fscurl);
static S3fsCurl* ParallelGetObjectRetryCallback(S3fsCurl* s3fscurl);
// lazy functions for set curl options
static bool UploadMultipartPostSetCurlOpts(S3fsCurl* s3fscurl);
static bool CopyMultipartPostSetCurlOpts(S3fsCurl* s3fscurl);
static bool PreGetObjectRequestSetCurlOpts(S3fsCurl* s3fscurl);
static bool PreHeadRequestSetCurlOpts(S3fsCurl* s3fscurl);
static bool ParseIAMCredentialResponse(const char* response, iamcredmap_t& keyval);
static bool SetIAMCredentials(const char* response);
static bool ParseIAMRoleFromMetaDataResponse(const char* response, std::string& rolename);
static bool SetIAMRoleFromMetaData(const char* response);
static bool LoadEnvSseCKeys(void);
static bool LoadEnvSseKmsid(void);
static bool PushbackSseKeys(std::string& onekey);
static bool AddUserAgent(CURL* hCurl);
static int CurlDebugFunc(CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr);
static int CurlDebugBodyInFunc(CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr);
static int CurlDebugBodyOutFunc(CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr);
static int RawCurlDebugFunc(CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr, curl_infotype datatype);
// methods
bool ResetHandle(bool lock_already_held = false);
bool RemakeHandle(void);
bool ClearInternalData(void);
void insertV4Headers();
void insertV2Headers();
void insertIBMIAMHeaders();
void insertAuthHeaders();
std::string CalcSignatureV2(const std::string& method, const std::string& strMD5, const std::string& content_type, const std::string& date, const std::string& resource);
std::string CalcSignature(const std::string& method, const std::string& canonical_uri, const std::string& query_string, const std::string& strdate, const std::string& payload_hash, const std::string& date8601);
int GetIAMCredentials(void);
int UploadMultipartPostSetup(const char* tpath, int part_num, const std::string& upload_id);
int CopyMultipartPostSetup(const char* from, const char* to, int part_num, const std::string& upload_id, headers_t& meta);
bool UploadMultipartPostComplete();
bool CopyMultipartPostComplete();
bool MixMultipartPostComplete();
public:
// class methods
static bool InitS3fsCurl(void);
static bool InitMimeType(const std::string& strFile);
static bool DestroyS3fsCurl(void);
static int ParallelMultipartUploadRequest(const char* tpath, headers_t& meta, int fd);
static int ParallelMixMultipartUploadRequest(const char* tpath, headers_t& meta, int fd, const fdpage_list_t& mixuppages);
static int ParallelGetObjectRequest(const char* tpath, int fd, off_t start, ssize_t size);
static bool CheckIAMCredentialUpdate(void);
// class methods(variables)
static std::string LookupMimeType(const std::string& name);
static bool SetCheckCertificate(bool isCertCheck);
static bool SetDnsCache(bool isCache);
static bool SetSslSessionCache(bool isCache);
static long SetConnectTimeout(long timeout);
static time_t SetReadwriteTimeout(time_t timeout);
static time_t GetReadwriteTimeout(void) { return S3fsCurl::readwrite_timeout; }
static int SetRetries(int count);
static bool SetPublicBucket(bool flag);
static bool IsPublicBucket(void) { return S3fsCurl::is_public_bucket; }
static acl_t SetDefaultAcl(acl_t acl);
static acl_t GetDefaultAcl();
static storage_class_t SetStorageClass(storage_class_t storage_class);
static storage_class_t GetStorageClass() { return S3fsCurl::storage_class; }
static bool LoadEnvSse(void) { return (S3fsCurl::LoadEnvSseCKeys() && S3fsCurl::LoadEnvSseKmsid()); }
static sse_type_t SetSseType(sse_type_t type);
static sse_type_t GetSseType(void) { return S3fsCurl::ssetype; }
static bool IsSseDisable(void) { return (sse_type_t::SSE_DISABLE == S3fsCurl::ssetype); }
static bool IsSseS3Type(void) { return (sse_type_t::SSE_S3 == S3fsCurl::ssetype); }
static bool IsSseCType(void) { return (sse_type_t::SSE_C == S3fsCurl::ssetype); }
static bool IsSseKmsType(void) { return (sse_type_t::SSE_KMS == S3fsCurl::ssetype); }
static bool FinalCheckSse(void);
static bool SetSseCKeys(const char* filepath);
static bool SetSseKmsid(const char* kmsid);
static bool IsSetSseKmsId(void) { return !S3fsCurl::ssekmsid.empty(); }
static const char* GetSseKmsId(void) { return S3fsCurl::ssekmsid.c_str(); }
static bool GetSseKey(std::string& md5, std::string& ssekey);
static bool GetSseKeyMd5(int pos, std::string& md5);
static int GetSseKeyCount(void);
static bool SetContentMd5(bool flag);
static bool SetVerbose(bool flag);
static bool GetVerbose(void) { return S3fsCurl::is_verbose; }
static bool SetDumpBody(bool flag);
static bool IsDumpBody(void) { return S3fsCurl::is_dump_body; }
static bool SetAccessKey(const char* AccessKeyId, const char* SecretAccessKey);
static bool SetAccessKeyWithSessionToken(const char* AccessKeyId, const char* SecretAccessKey, const char * SessionToken);
static bool IsSetAccessKeyID(void){
return (0 < S3fsCurl::AWSAccessKeyId.size());
}
static bool IsSetAccessKeys(void){
return (0 < S3fsCurl::IAM_role.size() || ((0 < S3fsCurl::AWSAccessKeyId.size() || S3fsCurl::is_ibm_iam_auth) && 0 < S3fsCurl::AWSSecretAccessKey.size()));
}
static long SetSslVerifyHostname(long value);
static long GetSslVerifyHostname(void) { return S3fsCurl::ssl_verify_hostname; }
// maximum parallel GET and PUT requests
static int SetMaxParallelCount(int value);
static int GetMaxParallelCount(void) { return S3fsCurl::max_parallel_cnt; }
// maximum parallel HEAD requests
static int SetMaxMultiRequest(int max);
static int GetMaxMultiRequest(void) { return S3fsCurl::max_multireq; }
static bool SetIsECS(bool flag);
static bool SetIsIBMIAMAuth(bool flag);
static size_t SetIAMFieldCount(size_t field_count);
static std::string SetIAMCredentialsURL(const char* url);
static std::string SetIAMTokenField(const char* token_field);
static std::string SetIAMExpiryField(const char* expiry_field);
static std::string SetIAMRole(const char* role);
static const char* GetIAMRole(void) { return S3fsCurl::IAM_role.c_str(); }
static bool SetMultipartSize(off_t size);
static off_t GetMultipartSize(void) { return S3fsCurl::multipart_size; }
static bool SetSignatureV4(bool isset) { bool bresult = S3fsCurl::is_sigv4; S3fsCurl::is_sigv4 = isset; return bresult; }
static bool IsSignatureV4(void) { return S3fsCurl::is_sigv4; }
static bool SetUserAgentFlag(bool isset) { bool bresult = S3fsCurl::is_ua; S3fsCurl::is_ua = isset; return bresult; }
static bool IsUserAgentFlag(void) { return S3fsCurl::is_ua; }
static void InitUserAgent(void);
static bool SetRequesterPays(bool flag) { bool old_flag = S3fsCurl::requester_pays; S3fsCurl::requester_pays = flag; return old_flag; }
static bool IsRequesterPays(void) { return S3fsCurl::requester_pays; }
// methods
bool CreateCurlHandle(bool only_pool = false, bool remake = false);
bool DestroyCurlHandle(bool restore_pool = true, bool clear_internal_data = true);
bool LoadIAMRoleFromMetaData(void);
bool AddSseRequestHead(sse_type_t ssetype, std::string& ssevalue, bool is_only_c, bool is_copy);
bool GetResponseCode(long& responseCode, bool from_curl_handle = true);
int RequestPerform(bool dontAddAuthHeaders=false);
int DeleteRequest(const char* tpath);
bool PreHeadRequest(const char* tpath, const char* bpath = NULL, const char* savedpath = NULL, int ssekey_pos = -1);
bool PreHeadRequest(std::string& tpath, std::string& bpath, std::string& savedpath, int ssekey_pos = -1) {
return PreHeadRequest(tpath.c_str(), bpath.c_str(), savedpath.c_str(), ssekey_pos);
}
int HeadRequest(const char* tpath, headers_t& meta);
int PutHeadRequest(const char* tpath, headers_t& meta, bool is_copy);
int PutRequest(const char* tpath, headers_t& meta, int fd);
int PreGetObjectRequest(const char* tpath, int fd, off_t start, ssize_t size, sse_type_t ssetype, std::string& ssevalue);
int GetObjectRequest(const char* tpath, int fd, off_t start = -1, ssize_t size = -1);
int CheckBucket(void);
int ListBucketRequest(const char* tpath, const char* query);
int PreMultipartPostRequest(const char* tpath, headers_t& meta, std::string& upload_id, bool is_copy);
int CompleteMultipartPostRequest(const char* tpath, const std::string& upload_id, etaglist_t& parts);
int UploadMultipartPostRequest(const char* tpath, int part_num, const std::string& upload_id);
int MultipartListRequest(std::string& body);
int AbortMultipartUpload(const char* tpath, const std::string& upload_id);
int MultipartHeadRequest(const char* tpath, off_t size, headers_t& meta, bool is_copy);
int MultipartUploadRequest(const char* tpath, headers_t& meta, int fd, bool is_copy);
int MultipartUploadRequest(const std::string& upload_id, const char* tpath, int fd, off_t offset, off_t size, etaglist_t& list);
int MultipartRenameRequest(const char* from, const char* to, headers_t& meta, off_t size);
// methods(variables)
CURL* GetCurlHandle(void) const { return hCurl; }
std::string GetPath(void) const { return path; }
std::string GetBasePath(void) const { return base_path; }
std::string GetSpacialSavedPath(void) const { return saved_path; }
std::string GetUrl(void) const { return url; }
std::string GetOp(void) const { return op; }
headers_t* GetResponseHeaders(void) { return &responseHeaders; }
BodyData* GetBodyData(void) { return &bodydata; }
BodyData* GetHeadData(void) { return &headdata; }
long GetLastResponseCode(void) const { return LastResponseCode; }
bool SetUseAhbe(bool ahbe);
bool EnableUseAhbe(void) { return SetUseAhbe(true); }
bool DisableUseAhbe(void) { return SetUseAhbe(false); }
bool IsUseAhbe(void) const { return is_use_ahbe; }
int GetMultipartRetryCount(void) const { return retry_count; }
void SetMultipartRetryCount(int retrycnt) { retry_count = retrycnt; }
bool IsOverMultipartRetryCount(void) const { return (retry_count >= S3fsCurl::retries); }
int GetLastPreHeadSeecKeyPos(void) const { return b_ssekey_pos; }
};
//----------------------------------------------
// class S3fsMultiCurl
//----------------------------------------------
// Class for lapping multi curl
//
typedef std::vector<S3fsCurl*> s3fscurllist_t;
typedef bool (*S3fsMultiSuccessCallback)(S3fsCurl* s3fscurl); // callback for succeed multi request
typedef S3fsCurl* (*S3fsMultiRetryCallback)(S3fsCurl* s3fscurl); // callback for failure and retrying
class S3fsMultiCurl
{
private:
const int maxParallelism;
s3fscurllist_t clist_all; // all of curl requests
s3fscurllist_t clist_req; // curl requests are sent
S3fsMultiSuccessCallback SuccessCallback;
S3fsMultiRetryCallback RetryCallback;
pthread_mutex_t completed_tids_lock;
std::vector<pthread_t> completed_tids;
private:
bool ClearEx(bool is_all);
int MultiPerform(void);
int MultiRead(void);
static void* RequestPerformWrapper(void* arg);
public:
explicit S3fsMultiCurl(int maxParallelism);
~S3fsMultiCurl();
int GetMaxParallelism() { return maxParallelism; }
S3fsMultiSuccessCallback SetSuccessCallback(S3fsMultiSuccessCallback function);
S3fsMultiRetryCallback SetRetryCallback(S3fsMultiRetryCallback function);
bool Clear(void) { return ClearEx(true); }
bool SetS3fsCurlObject(S3fsCurl* s3fscurl);
int Request(void);
};
//----------------------------------------------
// Utility Functions
//----------------------------------------------
std::string GetContentMD5(int fd);
unsigned char* md5hexsum(int fd, off_t start, ssize_t size);
std::string md5sum(int fd, off_t start, ssize_t size);
struct curl_slist* curl_slist_sort_insert(struct curl_slist* list, const char* data);
struct curl_slist* curl_slist_sort_insert(struct curl_slist* list, const char* key, const char* value);
std::string get_sorted_header_keys(const struct curl_slist* list);
std::string get_canonical_headers(const struct curl_slist* list, bool only_amz = false);
std::string get_header_value(const struct curl_slist* list, const std::string &key);
bool MakeUrlResource(const char* realpath, std::string& resourcepath, std::string& url);
std::string prepare_url(const char* url);
bool get_object_sse_type(const char* path, sse_type_t& ssetype, std::string& ssevalue); // implement in s3fs.cpp
#endif // S3FS_CURL_H_
/*
* Local variables:
* tab-width: 2
* c-basic-offset: 2
* End:
* vim600: expandtab sw=2 ts=2 fdm=marker
* vim<600: expandtab sw=2 ts=2
*/
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