470 lines
23 KiB
PHP
470 lines
23 KiB
PHP
<?php
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namespace Extend\TencentVideo;
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class TLSSigAPIv2
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{
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private $key = false;
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private $sdkappid = 0;
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/**
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*【功能说明】用于签发 TRTC 和 IM 服务中必须要使用的 UserSig 鉴权票据
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*
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*【参数说明】
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* @param string userid - 用户id，限制长度为32字节，只允许包含大小写英文字母（a-zA-Z）、数字（0-9）及下划线和连词符。
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* @param string expire - UserSig 票据的过期时间，单位是秒，比如 86400 代表生成的 UserSig 票据在一天后就无法再使用了。
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* @return string 签名字符串
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* @throws \Exception
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*/
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/**
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* Function: Used to issue UserSig that is required by the TRTC and IM services.
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*
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* Parameter description:
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* @param userid - User ID. The value can be up to 32 bytes in length and contain letters (a-z and A-Z), digits (0-9), underscores (_), and hyphens (-).
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* @param expire - UserSig expiration time, in seconds. For example, 86400 indicates that the generated UserSig will expire one day after being generated.
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* @return string signature string
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* @throws \Exception
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*/
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public function genUserSig( $userid, $expire = 86400*180 ) {
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return $this->__genSig( $userid, $expire, '', false );
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}
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/**
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*【功能说明】
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* 用于签发 TRTC 进房参数中可选的 PrivateMapKey 权限票据。
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* PrivateMapKey 需要跟 UserSig 一起使用，但 PrivateMapKey 比 UserSig 有更强的权限控制能力：
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* - UserSig 只能控制某个 UserID 有无使用 TRTC 服务的权限，只要 UserSig 正确，其对应的 UserID 可以进出任意房间。
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* - PrivateMapKey 则是将 UserID 的权限控制的更加严格，包括能不能进入某个房间，能不能在该房间里上行音视频等等。
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* 如果要开启 PrivateMapKey 严格权限位校验，需要在【实时音视频控制台】=>【应用管理】=>【应用信息】中打开“启动权限密钥”开关。
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*
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*【参数说明】
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* @param userid - 用户id，限制长度为32字节，只允许包含大小写英文字母（a-zA-Z）、数字（0-9）及下划线和连词符。
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* @param expire - PrivateMapKey 票据的过期时间，单位是秒，比如 86400 生成的 PrivateMapKey 票据在一天后就无法再使用了。
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* @param roomid - 房间号，用于指定该 userid 可以进入的房间号
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* @param privilegeMap - 权限位，使用了一个字节中的 8 个比特位，分别代表八个具体的功能权限开关：
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* - 第 1 位：0000 0001 = 1，创建房间的权限
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* - 第 2 位：0000 0010 = 2，加入房间的权限
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* - 第 3 位：0000 0100 = 4，发送语音的权限
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* - 第 4 位：0000 1000 = 8，接收语音的权限
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* - 第 5 位：0001 0000 = 16，发送视频的权限
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* - 第 6 位：0010 0000 = 32，接收视频的权限
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* - 第 7 位：0100 0000 = 64，发送辅路（也就是屏幕分享）视频的权限
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* - 第 8 位：1000 0000 = 200，接收辅路（也就是屏幕分享）视频的权限
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* - privilegeMap == 1111 1111 == 255 代表该 userid 在该 roomid 房间内的所有功能权限。
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* - privilegeMap == 0010 1010 == 42 代表该 userid 拥有加入房间和接收音视频数据的权限，但不具备其他权限。
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*/
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/**
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* Function:
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* Used to issue PrivateMapKey that is optional for room entry.
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* PrivateMapKey must be used together with UserSig but with more powerful permission control capabilities.
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* - UserSig can only control whether a UserID has permission to use the TRTC service. As long as the UserSig is correct, the user with the corresponding UserID can enter or leave any room.
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* - PrivateMapKey specifies more stringent permissions for a UserID, including whether the UserID can be used to enter a specific room and perform audio/video upstreaming in the room.
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* To enable stringent PrivateMapKey permission bit verification, you need to enable permission key in TRTC console > Application Management > Application Info.
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*
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* Parameter description:
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* userid - User ID. The value can be up to 32 bytes in length and contain letters (a-z and A-Z), digits (0-9), underscores (_), and hyphens (-).
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* roomid - ID of the room to which the specified UserID can enter.
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* expire - PrivateMapKey expiration time, in seconds. For example, 86400 indicates that the generated PrivateMapKey will expire one day after being generated.
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* privilegeMap - Permission bits. Eight bits in the same byte are used as the permission switches of eight specific features:
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* - Bit 1: 0000 0001 = 1, permission for room creation
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* - Bit 2: 0000 0010 = 2, permission for room entry
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* - Bit 3: 0000 0100 = 4, permission for audio sending
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* - Bit 4: 0000 1000 = 8, permission for audio receiving
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* - Bit 5: 0001 0000 = 16, permission for video sending
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* - Bit 6: 0010 0000 = 32, permission for video receiving
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* - Bit 7: 0100 0000 = 64, permission for substream video sending (screen sharing)
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* - Bit 8: 1000 0000 = 200, permission for substream video receiving (screen sharing)
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* - privilegeMap == 1111 1111 == 255: Indicates that the UserID has all feature permissions of the room specified by roomid.
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* - privilegeMap == 0010 1010 == 42: Indicates that the UserID has only the permissions to enter the room and receive audio/video data.
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*/
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public function genPrivateMapKey( $userid, $expire, $roomid, $privilegeMap ) {
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$userbuf = $this->__genUserBuf( $userid, $roomid, $expire, $privilegeMap, 0, '' );
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return $this->__genSig( $userid, $expire, $userbuf, true );
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}
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/**
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*【功能说明】
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* 用于签发 TRTC 进房参数中可选的 PrivateMapKey 权限票据。
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* PrivateMapKey 需要跟 UserSig 一起使用，但 PrivateMapKey 比 UserSig 有更强的权限控制能力：
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* - UserSig 只能控制某个 UserID 有无使用 TRTC 服务的权限，只要 UserSig 正确，其对应的 UserID 可以进出任意房间。
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* - PrivateMapKey 则是将 UserID 的权限控制的更加严格，包括能不能进入某个房间，能不能在该房间里上行音视频等等。
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* 如果要开启 PrivateMapKey 严格权限位校验，需要在【实时音视频控制台】=>【应用管理】=>【应用信息】中打开“启动权限密钥”开关。
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*
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*【参数说明】
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* @param userid - 用户id，限制长度为32字节，只允许包含大小写英文字母（a-zA-Z）、数字（0-9）及下划线和连词符。
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* @param expire - PrivateMapKey 票据的过期时间，单位是秒，比如 86400 生成的 PrivateMapKey 票据在一天后就无法再使用了。
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* @param roomstr - 房间号，用于指定该 userid 可以进入的房间号
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* @param privilegeMap - 权限位，使用了一个字节中的 8 个比特位，分别代表八个具体的功能权限开关：
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* - 第 1 位：0000 0001 = 1，创建房间的权限
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* - 第 2 位：0000 0010 = 2，加入房间的权限
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* - 第 3 位：0000 0100 = 4，发送语音的权限
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* - 第 4 位：0000 1000 = 8，接收语音的权限
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* - 第 5 位：0001 0000 = 16，发送视频的权限
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* - 第 6 位：0010 0000 = 32，接收视频的权限
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* - 第 7 位：0100 0000 = 64，发送辅路（也就是屏幕分享）视频的权限
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* - 第 8 位：1000 0000 = 200，接收辅路（也就是屏幕分享）视频的权限
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* - privilegeMap == 1111 1111 == 255 代表该 userid 在该 roomid 房间内的所有功能权限。
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* - privilegeMap == 0010 1010 == 42 代表该 userid 拥有加入房间和接收音视频数据的权限，但不具备其他权限。
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*/
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/**
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* Function:
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* Used to issue PrivateMapKey that is optional for room entry.
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* PrivateMapKey must be used together with UserSig but with more powerful permission control capabilities.
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* - UserSig can only control whether a UserID has permission to use the TRTC service. As long as the UserSig is correct, the user with the corresponding UserID can enter or leave any room.
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* - PrivateMapKey specifies more stringent permissions for a UserID, including whether the UserID can be used to enter a specific room and perform audio/video upstreaming in the room.
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* To enable stringent PrivateMapKey permission bit verification, you need to enable permission key in TRTC console > Application Management > Application Info.
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*
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* Parameter description:
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* @param userid - User ID. The value can be up to 32 bytes in length and contain letters (a-z and A-Z), digits (0-9), underscores (_), and hyphens (-).
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* @param roomstr - ID of the room to which the specified UserID can enter.
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* @param expire - PrivateMapKey expiration time, in seconds. For example, 86400 indicates that the generated PrivateMapKey will expire one day after being generated.
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* @param privilegeMap - Permission bits. Eight bits in the same byte are used as the permission switches of eight specific features:
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* - Bit 1: 0000 0001 = 1, permission for room creation
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* - Bit 2: 0000 0010 = 2, permission for room entry
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* - Bit 3: 0000 0100 = 4, permission for audio sending
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* - Bit 4: 0000 1000 = 8, permission for audio receiving
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* - Bit 5: 0001 0000 = 16, permission for video sending
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* - Bit 6: 0010 0000 = 32, permission for video receiving
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* - Bit 7: 0100 0000 = 64, permission for substream video sending (screen sharing)
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* - Bit 8: 1000 0000 = 200, permission for substream video receiving (screen sharing)
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* - privilegeMap == 1111 1111 == 255: Indicates that the UserID has all feature permissions of the room specified by roomid.
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* - privilegeMap == 0010 1010 == 42: Indicates that the UserID has only the permissions to enter the room and receive audio/video data.
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*/
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public function genPrivateMapKeyWithStringRoomID( $userid, $expire, $roomstr, $privilegeMap ) {
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$userbuf = $this->__genUserBuf( $userid, 0, $expire, $privilegeMap, 0, $roomstr );
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return $this->__genSig( $userid, $expire, $userbuf, true );
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}
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public function __construct( $sdkappid, $key ) {
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$this->sdkappid = $sdkappid;
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$this->key = $key;
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}
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/**
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* 用于 url 的 base64 encode
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* '+' => '*', '/' => '-', '=' => '_'
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* @param string $string 需要编码的数据
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* @return string 编码后的base64串，失败返回false
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* @throws \Exception
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*/
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/**
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* base64 encode for url
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* '+' => '*', '/' => '-', '=' => '_'
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* @param string $string data to be encoded
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* @return string The encoded base64 string, returns false on failure
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* @throws \Exception
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*/
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private function base64_url_encode( $string ) {
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static $replace = Array( '+' => '*', '/' => '-', '=' => '_' );
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$base64 = base64_encode( $string );
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if ( $base64 === false ) {
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throw new \Exception( 'base64_encode error' );
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}
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return str_replace( array_keys( $replace ), array_values( $replace ), $base64 );
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}
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/**
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* 用于 url 的 base64 decode
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* '+' => '*', '/' => '-', '=' => '_'
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* @param string $base64 需要解码的base64串
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* @return string 解码后的数据，失败返回false
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* @throws \Exception
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*/
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/**
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* base64 decode for url
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* '+' => '*', '/' => '-', '=' => '_'
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* @param string $base64 base64 string to be decoded
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* @return string Decoded data, return false on failure
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* @throws \Exception
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*/
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private function base64_url_decode( $base64 ) {
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static $replace = Array( '+' => '*', '/' => '-', '=' => '_' );
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$string = str_replace( array_values( $replace ), array_keys( $replace ), $base64 );
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$result = base64_decode( $string );
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if ( $result == false ) {
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throw new \Exception( 'base64_url_decode error' );
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}
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return $result;
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}
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/**
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* TRTC业务进房权限加密串使用用户定义的userbuf
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* @brief 生成 userbuf
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* @param account 用户名
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* @param dwSdkappid sdkappid
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* @param dwAuthID 数字房间号
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* @param dwExpTime 过期时间：该权限加密串的过期时间. 过期时间 = now+dwExpTime
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* @param dwPrivilegeMap 用户权限，255表示所有权限
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* @param dwAccountType 用户类型, 默认为0
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* @param roomStr 字符串房间号
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* @return userbuf string 返回的userbuf
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*/
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/**
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* User-defined userbuf is used for the encrypted string of TRTC service entry permission
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* @brief generate userbuf
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* @param account username
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* @param dwSdkappid sdkappid
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* @param dwAuthID digital room number
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* @param dwExpTime Expiration time: The expiration time of the encrypted string of this permission. Expiration time = now+dwExpTime
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* @param dwPrivilegeMap User permissions, 255 means all permissions
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* @param dwAccountType User type, default is 0
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* @param roomStr String room number
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* @return userbuf string returned userbuf
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*/
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private function __genUserBuf( $account, $dwAuthID, $dwExpTime, $dwPrivilegeMap, $dwAccountType,$roomStr ) {
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//cVer unsigned char/1 版本号，填0
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if($roomStr == '')
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$userbuf = pack( 'C1', '0' );
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else
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$userbuf = pack( 'C1', '1' );
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$userbuf .= pack( 'n', strlen( $account ) );
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//wAccountLen unsigned short /2 第三方自己的帐号长度
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$userbuf .= pack( 'a'.strlen( $account ), $account );
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//buffAccount wAccountLen 第三方自己的帐号字符
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$userbuf .= pack( 'N', $this->sdkappid );
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//dwSdkAppid unsigned int/4 sdkappid
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$userbuf .= pack( 'N', $dwAuthID );
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//dwAuthId unsigned int/4 群组号码/音视频房间号
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$expire = $dwExpTime + time();
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$userbuf .= pack( 'N', $expire );
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//dwExpTime unsigned int/4 过期时间 （当前时间 + 有效期（单位：秒，建议300秒））
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$userbuf .= pack( 'N', $dwPrivilegeMap );
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//dwPrivilegeMap unsigned int/4 权限位
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$userbuf .= pack( 'N', $dwAccountType );
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//dwAccountType unsigned int/4
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if($roomStr != '')
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{
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$userbuf .= pack( 'n', strlen( $roomStr ) );
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//roomStrLen unsigned short /2 字符串房间号长度
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$userbuf .= pack( 'a'.strlen( $roomStr ), $roomStr );
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//roomStr roomStrLen 字符串房间号
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}
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return $userbuf;
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}
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/**
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* 使用 hmac sha256 生成 sig 字段内容，经过 base64 编码
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* @param $identifier 用户名，utf-8 编码
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* @param $curr_time 当前生成 sig 的 unix 时间戳
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* @param $expire 有效期，单位秒
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* @param $base64_userbuf base64 编码后的 userbuf
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* @param $userbuf_enabled 是否开启 userbuf
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* @return string base64 后的 sig
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*/
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/**
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* Use hmac sha256 to generate sig field content, base64 encoded
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* @param $identifier Username, utf-8 encoded
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* @param $curr_time The unix timestamp of the current generated sig
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* @param $expire Validity period, in seconds
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* @param $base64_userbuf base64 encoded userbuf
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* @param $userbuf_enabled 是No enable userbuf
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* @return string sig after base64
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*/
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private function hmacsha256( $identifier, $curr_time, $expire, $base64_userbuf, $userbuf_enabled ) {
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$content_to_be_signed = 'TLS.identifier:' . $identifier . "\n"
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. 'TLS.sdkappid:' . $this->sdkappid . "\n"
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. 'TLS.time:' . $curr_time . "\n"
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. 'TLS.expire:' . $expire . "\n";
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if ( true == $userbuf_enabled ) {
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$content_to_be_signed .= 'TLS.userbuf:' . $base64_userbuf . "\n";
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}
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return base64_encode( hash_hmac( 'sha256', $content_to_be_signed, $this->key, true ) );
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}
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/**
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* 生成签名。
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*
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* @param $identifier 用户账号
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* @param int $expire 过期时间，单位秒，默认 180 天
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* @param $userbuf base64 编码后的 userbuf
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* @param $userbuf_enabled 是否开启 userbuf
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* @return string 签名字符串
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* @throws \Exception
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*/
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/**
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* Generate signature.
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*
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* @param $identifier user account
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* @param int $expire Expiration time, in seconds, default 180 days
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* @param $userbuf base64 encoded userbuf
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* @param $userbuf_enabled Whether to enable userbuf
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* @return string signature string
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* @throws \Exception
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*/
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private function __genSig( $identifier, $expire, $userbuf, $userbuf_enabled ) {
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$curr_time = time();
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$sig_array = Array(
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'TLS.ver' => '2.0',
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'TLS.identifier' => strval( $identifier ),
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'TLS.sdkappid' => intval( $this->sdkappid ),
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'TLS.expire' => intval( $expire ),
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'TLS.time' => intval( $curr_time )
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);
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$base64_userbuf = '';
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if ( true == $userbuf_enabled ) {
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$base64_userbuf = base64_encode( $userbuf );
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$sig_array['TLS.userbuf'] = strval( $base64_userbuf );
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}
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$sig_array['TLS.sig'] = $this->hmacsha256( $identifier, $curr_time, $expire, $base64_userbuf, $userbuf_enabled );
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if ( $sig_array['TLS.sig'] === false ) {
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throw new \Exception( 'base64_encode error' );
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}
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$json_str_sig = json_encode( $sig_array );
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if ( $json_str_sig === false ) {
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throw new \Exception( 'json_encode error' );
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}
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$compressed = gzcompress( $json_str_sig );
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if ( $compressed === false ) {
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throw new \Exception( 'gzcompress error' );
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}
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return $this->base64_url_encode( $compressed );
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}
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/**
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* 验证签名。
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*
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* @param string $sig 签名内容
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* @param string $identifier 需要验证用户名，utf-8 编码
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* @param int $init_time 返回的生成时间，unix 时间戳
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* @param int $expire_time 返回的有效期，单位秒
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* @param string $userbuf 返回的用户数据
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* @param string $error_msg 失败时的错误信息
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* @return boolean 验证是否成功
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* @throws \Exception
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*/
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/**
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* Verify signature.
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*
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* @param string $sig Signature content
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* @param string $identifier Need to authenticate user name, utf-8 encoding
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* @param int $init_time Returned generation time, unix timestamp
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|
* @param int $expire_time Return the validity period, in seconds
|
|
* @param string $userbuf returned user data
|
|
* @param string $error_msg error message on failure
|
|
* @return boolean Verify success
|
|
* @throws \Exception
|
|
*/
|
|
|
|
private function __verifySig( $sig, $identifier, &$init_time, &$expire_time, &$userbuf, &$error_msg ) {
|
|
try {
|
|
$error_msg = '';
|
|
$compressed_sig = $this->base64_url_decode( $sig );
|
|
$pre_level = error_reporting( E_ERROR );
|
|
$uncompressed_sig = gzuncompress( $compressed_sig );
|
|
error_reporting( $pre_level );
|
|
if ( $uncompressed_sig === false ) {
|
|
throw new \Exception( 'gzuncompress error' );
|
|
}
|
|
$sig_doc = json_decode( $uncompressed_sig );
|
|
if ( $sig_doc == false ) {
|
|
throw new \Exception( 'json_decode error' );
|
|
}
|
|
$sig_doc = ( array )$sig_doc;
|
|
if ( $sig_doc['TLS.identifier'] !== $identifier ) {
|
|
throw new \Exception( "identifier dosen't match" );
|
|
}
|
|
if ( $sig_doc['TLS.sdkappid'] != $this->sdkappid ) {
|
|
throw new \Exception( "sdkappid dosen't match" );
|
|
}
|
|
$sig = $sig_doc['TLS.sig'];
|
|
if ( $sig == false ) {
|
|
throw new \Exception( 'sig field is missing' );
|
|
}
|
|
|
|
$init_time = $sig_doc['TLS.time'];
|
|
$expire_time = $sig_doc['TLS.expire'];
|
|
|
|
$curr_time = time();
|
|
if ( $curr_time > $init_time+$expire_time ) {
|
|
throw new \Exception( 'sig expired' );
|
|
}
|
|
|
|
$userbuf_enabled = false;
|
|
$base64_userbuf = '';
|
|
if ( isset( $sig_doc['TLS.userbuf'] ) ) {
|
|
$base64_userbuf = $sig_doc['TLS.userbuf'];
|
|
$userbuf = base64_decode( $base64_userbuf );
|
|
$userbuf_enabled = true;
|
|
}
|
|
$sigCalculated = $this->hmacsha256( $identifier, $init_time, $expire_time, $base64_userbuf, $userbuf_enabled );
|
|
|
|
if ( $sig != $sigCalculated ) {
|
|
throw new \Exception( 'verify failed' );
|
|
}
|
|
|
|
return true;
|
|
} catch ( \Exception $ex ) {
|
|
$error_msg = $ex->getMessage();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 带 userbuf 验证签名。
|
|
*
|
|
* @param string $sig 签名内容
|
|
* @param string $identifier 需要验证用户名，utf-8 编码
|
|
* @param int $init_time 返回的生成时间，unix 时间戳
|
|
* @param int $expire_time 返回的有效期，单位秒
|
|
* @param string $error_msg 失败时的错误信息
|
|
* @return boolean 验证是否成功
|
|
* @throws \Exception
|
|
*/
|
|
|
|
/**
|
|
* Verify signature with userbuf.
|
|
*
|
|
* @param string $sig Signature content
|
|
* @param string $identifier Need to authenticate user name, utf-8 encoding
|
|
* @param int $init_time Returned generation time, unix timestamp
|
|
* @param int $expire_time Return the validity period, in seconds
|
|
* @param string $error_msg error message on failure
|
|
* @return boolean Verify success
|
|
* @throws \Exception
|
|
*/
|
|
public function verifySig( $sig, $identifier, &$init_time, &$expire_time, &$error_msg ) {
|
|
$userbuf = '';
|
|
return $this->__verifySig( $sig, $identifier, $init_time, $expire_time, $userbuf, $error_msg );
|
|
}
|
|
|
|
/**
|
|
* 验证签名
|
|
* @param string $sig 签名内容
|
|
* @param string $identifier 需要验证用户名，utf-8 编码
|
|
* @param int $init_time 返回的生成时间，unix 时间戳
|
|
* @param int $expire_time 返回的有效期，单位秒
|
|
* @param string $userbuf 返回的用户数据
|
|
* @param string $error_msg 失败时的错误信息
|
|
* @return boolean 验证是否成功
|
|
* @throws \Exception
|
|
*/
|
|
|
|
/**
|
|
* Verify signature
|
|
* @param string $sig Signature content
|
|
* @param string $identifier Need to authenticate user name, utf-8 encoding
|
|
* @param int $init_time Returned generation time, unix timestamp
|
|
* @param int $expire_time Return the validity period, in seconds
|
|
* @param string $userbuf returned user data
|
|
* @param string $error_msg error message on failure
|
|
* @return boolean Verify success
|
|
* @throws \Exception
|
|
*/
|
|
public function verifySigWithUserBuf( $sig, $identifier, &$init_time, &$expire_time, &$userbuf, &$error_msg ) {
|
|
return $this->__verifySig( $sig, $identifier, $init_time, $expire_time, $userbuf, $error_msg );
|
|
}
|
|
} |