202 lines
8.1 KiB
C++
202 lines
8.1 KiB
C++
/*
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* s3fs - FUSE-based file system backed by Amazon S3
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*
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* Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef S3FS_CRED_H_
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#define S3FS_CRED_H_
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#include <map>
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#include <mutex>
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#include <string>
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#include "common.h"
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#include "s3fs_extcred.h"
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#include "types.h"
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//----------------------------------------------
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// Typedefs
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//----------------------------------------------
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typedef std::map<std::string, std::string> iamcredmap_t;
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//------------------------------------------------
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// class S3fsCred
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//------------------------------------------------
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// This is a class for operating and managing Credentials(accesskey,
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// secret key, tokens, etc.) used by S3fs.
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// Operations related to Credentials are aggregated in this class.
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//
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// cppcheck-suppress ctuOneDefinitionRuleViolation ; for stub in test_curl_util.cpp
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class S3fsCred
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{
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private:
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static constexpr char ALLBUCKET_FIELDS_TYPE[] = ""; // special key for mapping(This name is absolutely not used as a bucket name)
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static constexpr char KEYVAL_FIELDS_TYPE[] = "\t"; // special key for mapping(This name is absolutely not used as a bucket name)
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static constexpr char AWS_ACCESSKEYID[] = "AWSAccessKeyId";
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static constexpr char AWS_SECRETKEY[] = "AWSSecretKey";
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static constexpr int IAM_EXPIRE_MERGING = 20 * 60; // update timing
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static constexpr char ECS_IAM_ENV_VAR[] = "AWS_CONTAINER_CREDENTIALS_RELATIVE_URI";
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static constexpr char IAMCRED_ACCESSKEYID[] = "AccessKeyId";
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static constexpr char IAMCRED_SECRETACCESSKEY[] = "SecretAccessKey";
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static constexpr char IAMCRED_ROLEARN[] = "RoleArn";
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static std::string bucket_name;
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mutable std::mutex token_lock;
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std::string passwd_file;
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std::string aws_profile;
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bool load_iamrole;
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std::string AWSAccessKeyId GUARDED_BY(token_lock);
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std::string AWSSecretAccessKey GUARDED_BY(token_lock);
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std::string AWSAccessToken GUARDED_BY(token_lock);
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time_t AWSAccessTokenExpire GUARDED_BY(token_lock);
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bool is_ecs;
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bool is_use_session_token;
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bool is_ibm_iam_auth;
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std::string IAM_cred_url;
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int IAM_api_version GUARDED_BY(token_lock);
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std::string IAMv2_api_token GUARDED_BY(token_lock);
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size_t IAM_field_count;
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std::string IAM_token_field;
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std::string IAM_expiry_field;
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std::string IAM_role GUARDED_BY(token_lock);
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bool set_builtin_cred_opts; // true if options other than "credlib" is set
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std::string credlib; // credlib(name or path)
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std::string credlib_opts; // options for credlib
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void* hExtCredLib;
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fp_VersionS3fsCredential pFuncCredVersion;
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fp_InitS3fsCredential pFuncCredInit;
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fp_FreeS3fsCredential pFuncCredFree;
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fp_UpdateS3fsCredential pFuncCredUpdate;
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public:
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static constexpr char IAMv2_token_url[] = "http://169.254.169.254/latest/api/token";
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static constexpr int IAMv2_token_ttl = 21600;
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static constexpr char IAMv2_token_ttl_hdr[] = "X-aws-ec2-metadata-token-ttl-seconds";
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static constexpr char IAMv2_token_hdr[] = "X-aws-ec2-metadata-token";
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private:
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static bool ParseIAMRoleFromMetaDataResponse(const char* response, std::string& rolename);
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bool SetS3fsPasswdFile(const char* file);
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bool IsSetPasswdFile() const;
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bool SetAwsProfileName(const char* profile_name);
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bool SetIAMRoleMetadataType(bool flag);
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bool SetAccessKey(const char* AccessKeyId, const char* SecretAccessKey) REQUIRES(S3fsCred::token_lock);
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bool SetAccessKeyWithSessionToken(const char* AccessKeyId, const char* SecretAccessKey, const char * SessionToken) REQUIRES(S3fsCred::token_lock);
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bool IsSetAccessKeys() const REQUIRES(S3fsCred::token_lock);
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bool SetIsECS(bool flag);
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bool SetIsUseSessionToken(bool flag);
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bool SetIsIBMIAMAuth(bool flag);
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int SetIMDSVersionHasLock(int version) REQUIRES(S3fsCred::token_lock);
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int SetIMDSVersion(int version)
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{
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const std::lock_guard<std::mutex> lock(token_lock);
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return SetIMDSVersionHasLock(version);
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}
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int GetIMDSVersion() const REQUIRES(S3fsCred::token_lock);
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bool SetIAMv2APITokenHasLock(const std::string& token) REQUIRES(S3fsCred::token_lock);
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const std::string& GetIAMv2APIToken() const REQUIRES(S3fsCred::token_lock);
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bool SetIAMRole(const char* role) REQUIRES(S3fsCred::token_lock);
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const std::string& GetIAMRoleHasLock() const REQUIRES(S3fsCred::token_lock);
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const std::string& GetIAMRole() const
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{
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const std::lock_guard<std::mutex> lock(token_lock);
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return GetIAMRoleHasLock();
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}
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bool IsSetIAMRole() const REQUIRES(S3fsCred::token_lock);
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size_t SetIAMFieldCount(size_t field_count);
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std::string SetIAMCredentialsURL(const char* url);
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std::string SetIAMTokenField(const char* token_field);
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std::string SetIAMExpiryField(const char* expiry_field);
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bool IsReadableS3fsPasswdFile() const;
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bool CheckS3fsPasswdFilePerms();
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bool ParseS3fsPasswdFile(bucketkvmap_t& resmap);
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bool ReadS3fsPasswdFile() REQUIRES(S3fsCred::token_lock);
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static int CheckS3fsCredentialAwsFormat(const kvmap_t& kvmap, std::string& access_key_id, std::string& secret_access_key);
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bool ReadAwsCredentialFile(const std::string &filename) REQUIRES(S3fsCred::token_lock);
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bool InitialS3fsCredentials() REQUIRES(S3fsCred::token_lock);
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bool ParseIAMCredentialResponse(const char* response, iamcredmap_t& keyval) const;
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bool GetIAMCredentialsURL(std::string& url, bool check_iam_role) REQUIRES(S3fsCred::token_lock);
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bool LoadIAMCredentials() REQUIRES(S3fsCred::token_lock);
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bool SetIAMCredentials(const char* response) REQUIRES(S3fsCred::token_lock);
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bool SetIAMRoleFromMetaData(const char* response);
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bool SetExtCredLib(const char* arg);
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bool IsSetExtCredLib() const;
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bool SetExtCredLibOpts(const char* args);
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bool IsSetExtCredLibOpts() const;
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bool InitExtCredLib();
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bool LoadExtCredLib();
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bool UnloadExtCredLib();
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bool UpdateExtCredentials() REQUIRES(S3fsCred::token_lock);
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static bool CheckForbiddenBucketParams();
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public:
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static bool SetBucket(const std::string& bucket);
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static const std::string& GetBucket();
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S3fsCred();
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~S3fsCred();
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S3fsCred(const S3fsCred&) = delete;
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S3fsCred(S3fsCred&&) = delete;
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S3fsCred& operator=(const S3fsCred&) = delete;
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S3fsCred& operator=(S3fsCred&&) = delete;
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bool IsIBMIAMAuth() const { return is_ibm_iam_auth; }
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bool LoadIAMRoleFromMetaData();
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bool CheckIAMCredentialUpdate(std::string* access_key_id = nullptr, std::string* secret_access_key = nullptr, std::string* access_token = nullptr);
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const char* GetCredFuncVersion(bool detail) const;
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int DetectParam(const char* arg);
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bool CheckAllParams();
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};
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#endif // S3FS_CRED_H_
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: expandtab sw=4 ts=4 fdm=marker
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* vim<600: expandtab sw=4 ts=4
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*/
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