Use mattermost v5 module (#1192)

1 files changed, 236 insertions, 0 deletions

diff --git a/vendor/github.com/mattermost/ldap/error.go b/vendor/github.com/mattermost/ldap/error.go
new file mode 100644
index 00000000..b1fda2d8
--- /dev/null
+++ b/vendor/github.com/mattermost/ldap/error.go
@@ -0,0 +1,236 @@
+package ldap
+
+import (
+	"fmt"
+
+	ber "github.com/go-asn1-ber/asn1-ber"
+)
+
+// LDAP Result Codes
+const (
+	LDAPResultSuccess                            = 0
+	LDAPResultOperationsError                    = 1
+	LDAPResultProtocolError                      = 2
+	LDAPResultTimeLimitExceeded                  = 3
+	LDAPResultSizeLimitExceeded                  = 4
+	LDAPResultCompareFalse                       = 5
+	LDAPResultCompareTrue                        = 6
+	LDAPResultAuthMethodNotSupported             = 7
+	LDAPResultStrongAuthRequired                 = 8
+	LDAPResultReferral                           = 10
+	LDAPResultAdminLimitExceeded                 = 11
+	LDAPResultUnavailableCriticalExtension       = 12
+	LDAPResultConfidentialityRequired            = 13
+	LDAPResultSaslBindInProgress                 = 14
+	LDAPResultNoSuchAttribute                    = 16
+	LDAPResultUndefinedAttributeType             = 17
+	LDAPResultInappropriateMatching              = 18
+	LDAPResultConstraintViolation                = 19
+	LDAPResultAttributeOrValueExists             = 20
+	LDAPResultInvalidAttributeSyntax             = 21
+	LDAPResultNoSuchObject                       = 32
+	LDAPResultAliasProblem                       = 33
+	LDAPResultInvalidDNSyntax                    = 34
+	LDAPResultIsLeaf                             = 35
+	LDAPResultAliasDereferencingProblem          = 36
+	LDAPResultInappropriateAuthentication        = 48
+	LDAPResultInvalidCredentials                 = 49
+	LDAPResultInsufficientAccessRights           = 50
+	LDAPResultBusy                               = 51
+	LDAPResultUnavailable                        = 52
+	LDAPResultUnwillingToPerform                 = 53
+	LDAPResultLoopDetect                         = 54
+	LDAPResultSortControlMissing                 = 60
+	LDAPResultOffsetRangeError                   = 61
+	LDAPResultNamingViolation                    = 64
+	LDAPResultObjectClassViolation               = 65
+	LDAPResultNotAllowedOnNonLeaf                = 66
+	LDAPResultNotAllowedOnRDN                    = 67
+	LDAPResultEntryAlreadyExists                 = 68
+	LDAPResultObjectClassModsProhibited          = 69
+	LDAPResultResultsTooLarge                    = 70
+	LDAPResultAffectsMultipleDSAs                = 71
+	LDAPResultVirtualListViewErrorOrControlError = 76
+	LDAPResultOther                              = 80
+	LDAPResultServerDown                         = 81
+	LDAPResultLocalError                         = 82
+	LDAPResultEncodingError                      = 83
+	LDAPResultDecodingError                      = 84
+	LDAPResultTimeout                            = 85
+	LDAPResultAuthUnknown                        = 86
+	LDAPResultFilterError                        = 87
+	LDAPResultUserCanceled                       = 88
+	LDAPResultParamError                         = 89
+	LDAPResultNoMemory                           = 90
+	LDAPResultConnectError                       = 91
+	LDAPResultNotSupported                       = 92
+	LDAPResultControlNotFound                    = 93
+	LDAPResultNoResultsReturned                  = 94
+	LDAPResultMoreResultsToReturn                = 95
+	LDAPResultClientLoop                         = 96
+	LDAPResultReferralLimitExceeded              = 97
+	LDAPResultInvalidResponse                    = 100
+	LDAPResultAmbiguousResponse                  = 101
+	LDAPResultTLSNotSupported                    = 112
+	LDAPResultIntermediateResponse               = 113
+	LDAPResultUnknownType                        = 114
+	LDAPResultCanceled                           = 118
+	LDAPResultNoSuchOperation                    = 119
+	LDAPResultTooLate                            = 120
+	LDAPResultCannotCancel                       = 121
+	LDAPResultAssertionFailed                    = 122
+	LDAPResultAuthorizationDenied                = 123
+	LDAPResultSyncRefreshRequired                = 4096
+
+	ErrorNetwork            = 200
+	ErrorFilterCompile      = 201
+	ErrorFilterDecompile    = 202
+	ErrorDebugging          = 203
+	ErrorUnexpectedMessage  = 204
+	ErrorUnexpectedResponse = 205
+	ErrorEmptyPassword      = 206
+)
+
+// LDAPResultCodeMap contains string descriptions for LDAP error codes
+var LDAPResultCodeMap = map[uint16]string{
+	LDAPResultSuccess:                            "Success",
+	LDAPResultOperationsError:                    "Operations Error",
+	LDAPResultProtocolError:                      "Protocol Error",
+	LDAPResultTimeLimitExceeded:                  "Time Limit Exceeded",
+	LDAPResultSizeLimitExceeded:                  "Size Limit Exceeded",
+	LDAPResultCompareFalse:                       "Compare False",
+	LDAPResultCompareTrue:                        "Compare True",
+	LDAPResultAuthMethodNotSupported:             "Auth Method Not Supported",
+	LDAPResultStrongAuthRequired:                 "Strong Auth Required",
+	LDAPResultReferral:                           "Referral",
+	LDAPResultAdminLimitExceeded:                 "Admin Limit Exceeded",
+	LDAPResultUnavailableCriticalExtension:       "Unavailable Critical Extension",
+	LDAPResultConfidentialityRequired:            "Confidentiality Required",
+	LDAPResultSaslBindInProgress:                 "Sasl Bind In Progress",
+	LDAPResultNoSuchAttribute:                    "No Such Attribute",
+	LDAPResultUndefinedAttributeType:             "Undefined Attribute Type",
+	LDAPResultInappropriateMatching:              "Inappropriate Matching",
+	LDAPResultConstraintViolation:                "Constraint Violation",
+	LDAPResultAttributeOrValueExists:             "Attribute Or Value Exists",
+	LDAPResultInvalidAttributeSyntax:             "Invalid Attribute Syntax",
+	LDAPResultNoSuchObject:                       "No Such Object",
+	LDAPResultAliasProblem:                       "Alias Problem",
+	LDAPResultInvalidDNSyntax:                    "Invalid DN Syntax",
+	LDAPResultIsLeaf:                             "Is Leaf",
+	LDAPResultAliasDereferencingProblem:          "Alias Dereferencing Problem",
+	LDAPResultInappropriateAuthentication:        "Inappropriate Authentication",
+	LDAPResultInvalidCredentials:                 "Invalid Credentials",
+	LDAPResultInsufficientAccessRights:           "Insufficient Access Rights",
+	LDAPResultBusy:                               "Busy",
+	LDAPResultUnavailable:                        "Unavailable",
+	LDAPResultUnwillingToPerform:                 "Unwilling To Perform",
+	LDAPResultLoopDetect:                         "Loop Detect",
+	LDAPResultSortControlMissing:                 "Sort Control Missing",
+	LDAPResultOffsetRangeError:                   "Result Offset Range Error",
+	LDAPResultNamingViolation:                    "Naming Violation",
+	LDAPResultObjectClassViolation:               "Object Class Violation",
+	LDAPResultResultsTooLarge:                    "Results Too Large",
+	LDAPResultNotAllowedOnNonLeaf:                "Not Allowed On Non Leaf",
+	LDAPResultNotAllowedOnRDN:                    "Not Allowed On RDN",
+	LDAPResultEntryAlreadyExists:                 "Entry Already Exists",
+	LDAPResultObjectClassModsProhibited:          "Object Class Mods Prohibited",
+	LDAPResultAffectsMultipleDSAs:                "Affects Multiple DSAs",
+	LDAPResultVirtualListViewErrorOrControlError: "Failed because of a problem related to the virtual list view",
+	LDAPResultOther:                              "Other",
+	LDAPResultServerDown:                         "Cannot establish a connection",
+	LDAPResultLocalError:                         "An error occurred",
+	LDAPResultEncodingError:                      "LDAP encountered an error while encoding",
+	LDAPResultDecodingError:                      "LDAP encountered an error while decoding",
+	LDAPResultTimeout:                            "LDAP timeout while waiting for a response from the server",
+	LDAPResultAuthUnknown:                        "The auth method requested in a bind request is unknown",
+	LDAPResultFilterError:                        "An error occurred while encoding the given search filter",
+	LDAPResultUserCanceled:                       "The user canceled the operation",
+	LDAPResultParamError:                         "An invalid parameter was specified",
+	LDAPResultNoMemory:                           "Out of memory error",
+	LDAPResultConnectError:                       "A connection to the server could not be established",
+	LDAPResultNotSupported:                       "An attempt has been made to use a feature not supported LDAP",
+	LDAPResultControlNotFound:                    "The controls required to perform the requested operation were not found",
+	LDAPResultNoResultsReturned:                  "No results were returned from the server",
+	LDAPResultMoreResultsToReturn:                "There are more results in the chain of results",
+	LDAPResultClientLoop:                         "A loop has been detected. For example when following referrals",
+	LDAPResultReferralLimitExceeded:              "The referral hop limit has been exceeded",
+	LDAPResultCanceled:                           "Operation was canceled",
+	LDAPResultNoSuchOperation:                    "Server has no knowledge of the operation requested for cancellation",
+	LDAPResultTooLate:                            "Too late to cancel the outstanding operation",
+	LDAPResultCannotCancel:                       "The identified operation does not support cancellation or the cancel operation cannot be performed",
+	LDAPResultAssertionFailed:                    "An assertion control given in the LDAP operation evaluated to false causing the operation to not be performed",
+	LDAPResultSyncRefreshRequired:                "Refresh Required",
+	LDAPResultInvalidResponse:                    "Invalid Response",
+	LDAPResultAmbiguousResponse:                  "Ambiguous Response",
+	LDAPResultTLSNotSupported:                    "Tls Not Supported",
+	LDAPResultIntermediateResponse:               "Intermediate Response",
+	LDAPResultUnknownType:                        "Unknown Type",
+	LDAPResultAuthorizationDenied:                "Authorization Denied",
+
+	ErrorNetwork:            "Network Error",
+	ErrorFilterCompile:      "Filter Compile Error",
+	ErrorFilterDecompile:    "Filter Decompile Error",
+	ErrorDebugging:          "Debugging Error",
+	ErrorUnexpectedMessage:  "Unexpected Message",
+	ErrorUnexpectedResponse: "Unexpected Response",
+	ErrorEmptyPassword:      "Empty password not allowed by the client",
+}
+
+// Error holds LDAP error information
+type Error struct {
+	// Err is the underlying error
+	Err error
+	// ResultCode is the LDAP error code
+	ResultCode uint16
+	// MatchedDN is the matchedDN returned if any
+	MatchedDN string
+}
+
+func (e *Error) Error() string {
+	return fmt.Sprintf("LDAP Result Code %d %q: %s", e.ResultCode, LDAPResultCodeMap[e.ResultCode], e.Err.Error())
+}
+
+// GetLDAPError creates an Error out of a BER packet representing a LDAPResult
+// The return is an error object. It can be casted to a Error structure.
+// This function returns nil if resultCode in the LDAPResult sequence is success(0).
+func GetLDAPError(packet *ber.Packet) error {
+	if packet == nil {
+		return &Error{ResultCode: ErrorUnexpectedResponse, Err: fmt.Errorf("Empty packet")}
+	}
+
+	if len(packet.Children) >= 2 {
+		response := packet.Children[1]
+		if response == nil {
+			return &Error{ResultCode: ErrorUnexpectedResponse, Err: fmt.Errorf("Empty response in packet")}
+		}
+		if response.ClassType == ber.ClassApplication && response.TagType == ber.TypeConstructed && len(response.Children) >= 3 {
+			resultCode := uint16(response.Children[0].Value.(int64))
+			if resultCode == 0 { // No error
+				return nil
+			}
+			return &Error{ResultCode: resultCode, MatchedDN: response.Children[1].Value.(string),
+				Err: fmt.Errorf("%s", response.Children[2].Value.(string))}
+		}
+	}
+
+	return &Error{ResultCode: ErrorNetwork, Err: fmt.Errorf("Invalid packet format")}
+}
+
+// NewError creates an LDAP error with the given code and underlying error
+func NewError(resultCode uint16, err error) error {
+	return &Error{ResultCode: resultCode, Err: err}
+}
+
+// IsErrorWithCode returns true if the given error is an LDAP error with the given result code
+func IsErrorWithCode(err error, desiredResultCode uint16) bool {
+	if err == nil {
+		return false
+	}
+
+	serverError, ok := err.(*Error)
+	if !ok {
+		return false
+	}
+
+	return serverError.ResultCode == desiredResultCode
+}