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Copy pathmessage_handler_validator.go
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394 lines (351 loc) · 10.3 KB
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package validators
import (
"context"
"encoding/base64"
"fmt"
"net/url"
"strings"
"time"
"github.com/NdoleStudio/httpsms/pkg/cache"
"github.com/NdoleStudio/httpsms/pkg/repositories"
"github.com/NdoleStudio/httpsms/pkg/services"
"github.com/NdoleStudio/stacktrace"
"github.com/NdoleStudio/httpsms/pkg/entities"
"github.com/NdoleStudio/httpsms/pkg/requests"
"github.com/NdoleStudio/httpsms/pkg/telemetry"
"github.com/thedevsaddam/govalidator"
)
// MessageHandlerValidator validates models used in handlers.MessageHandler
type MessageHandlerValidator struct {
validator
logger telemetry.Logger
tracer telemetry.Tracer
phoneService *services.PhoneService
tokenValidator *TurnstileTokenValidator
cache cache.Cache
}
// NewMessageHandlerValidator creates a new handlers.MessageHandler validator
func NewMessageHandlerValidator(
logger telemetry.Logger,
tracer telemetry.Tracer,
phoneService *services.PhoneService,
tokenValidator *TurnstileTokenValidator,
) (v *MessageHandlerValidator) {
return &MessageHandlerValidator{
logger: logger.WithService(fmt.Sprintf("%T", v)),
tracer: tracer,
phoneService: phoneService,
tokenValidator: tokenValidator,
}
}
const (
maxAttachmentCount = 10
maxAttachmentSize = (3 * 1024 * 1024) / 2 // 1.5 MB per attachment
maxTotalAttachmentSize = 3 * 1024 * 1024 // 3 MB total
)
// ValidateMessageReceive validates the requests.MessageReceive request
func (validator MessageHandlerValidator) ValidateMessageReceive(_ context.Context, request requests.MessageReceive) url.Values {
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"to": []string{
"required",
phoneNumberRule,
},
"from": []string{
"required",
},
"content": func() []string {
if len(request.Attachments) > 0 {
return []string{"max:2048"}
}
return []string{"required", "min:1", "max:2048"}
}(),
"sim": []string{
"required",
"in:" + strings.Join([]string{
string(entities.SIM1),
string(entities.SIM2),
}, ","),
},
},
})
errors := v.ValidateStruct()
if len(request.Attachments) > 0 {
attachmentErrors := validator.validateAttachments(request.Attachments)
for key, values := range attachmentErrors {
for _, value := range values {
errors.Add(key, value)
}
}
}
return errors
}
func (validator MessageHandlerValidator) validateAttachments(attachments []requests.MessageAttachment) url.Values {
errors := url.Values{}
allowedTypes := repositories.AllowedContentTypes()
if len(attachments) > maxAttachmentCount {
errors.Add("attachments", fmt.Sprintf("attachment count [%d] exceeds maximum of [%d]", len(attachments), maxAttachmentCount))
return errors
}
totalSize := 0
for i, attachment := range attachments {
if !allowedTypes[attachment.ContentType] {
errors.Add("attachments", fmt.Sprintf("attachment [%d] has unsupported content type [%s]", i, attachment.ContentType))
continue
}
decoded, err := base64.StdEncoding.DecodeString(attachment.Content)
if err != nil {
errors.Add("attachments", fmt.Sprintf("attachment [%d] has invalid base64 content", i))
continue
}
if len(decoded) > maxAttachmentSize {
errors.Add("attachments", fmt.Sprintf("attachment [%d] size [%d] exceeds maximum of [%d] bytes", i, len(decoded), maxAttachmentSize))
}
totalSize += len(decoded)
}
if totalSize > maxTotalAttachmentSize {
errors.Add("attachments", fmt.Sprintf("total attachment size [%d] exceeds maximum of [%d] bytes", totalSize, maxTotalAttachmentSize))
}
return errors
}
// ValidateMessageSend validates the requests.MessageSend request
func (validator MessageHandlerValidator) ValidateMessageSend(ctx context.Context, userID entities.UserID, request requests.MessageSend) url.Values {
ctx, span := validator.tracer.Start(ctx)
defer span.End()
ctxLogger := validator.tracer.CtxLogger(validator.logger, span)
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"to": []string{
"required",
contactPhoneNumberRule,
},
"request_id": []string{
"max:255",
},
"from": []string{
"required",
phoneNumberRule,
},
"attachments": []string{
"max:10",
multipleAttachmentURLRule,
},
"content": []string{
"required",
"min:1",
"max:2048",
},
},
})
result := v.ValidateStruct()
if len(result) != 0 {
return result
}
if request.SendAt != nil && request.SendAt.After(time.Now().Add(480*time.Hour)) {
result.Add("send_at", "the scheduled time cannot be more than 20 days (480 hours) in the future")
}
_, err := validator.phoneService.Load(ctx, userID, request.From)
if stacktrace.GetCode(err) == repositories.ErrCodeNotFound {
result.Add("from", fmt.Sprintf("no phone found with with 'from' number [%s]. install the android app on your phone to start sending messages", request.From))
}
if err != nil {
ctxLogger.Error(validator.tracer.WrapErrorSpan(span, stacktrace.Propagatef(err, "could not load phone for user [%s] and phone [%s]", userID, request.From)))
result.Add("from", fmt.Sprintf("could not validate 'from' number [%s], please try again later", request.From))
}
return result
}
// ValidateMessageBulkSend validates the requests.MessageBulkSend request
func (validator MessageHandlerValidator) ValidateMessageBulkSend(ctx context.Context, userID entities.UserID, request requests.MessageBulkSend) url.Values {
ctx, span := validator.tracer.Start(ctx)
defer span.End()
ctxLogger := validator.tracer.CtxLogger(validator.logger, span)
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"to": []string{
"required",
"max:1000",
"min:1",
multipleContactPhoneNumberRule,
},
"from": []string{
"required",
phoneNumberRule,
},
"attachments": []string{
"max:10",
multipleAttachmentURLRule,
},
"content": []string{
"required",
"min:1",
"max:1024",
},
},
})
result := v.ValidateStruct()
if len(result) != 0 {
return result
}
_, err := validator.phoneService.Load(ctx, userID, request.From)
if stacktrace.GetCode(err) == repositories.ErrCodeNotFound {
result.Add("from", fmt.Sprintf("no phone found with with 'from' number [%s]. Install the android app on your phone to start sending messages", request.From))
}
if err != nil {
ctxLogger.Error(validator.tracer.WrapErrorSpan(span, stacktrace.Propagatef(err, "could not load phone for user [%s] and phone [%s]", userID, request.From)))
result.Add("from", fmt.Sprintf("could not validate 'from' number [%s], please try again later", request.From))
}
return result
}
// ValidateMessageOutstanding validates the requests.MessageOutstanding request
func (validator MessageHandlerValidator) ValidateMessageOutstanding(_ context.Context, request requests.MessageOutstanding) url.Values {
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"message_id": []string{
"required",
"uuid",
},
},
})
return v.ValidateStruct()
}
// ValidateMessageIndex validates the requests.MessageIndex request
func (validator MessageHandlerValidator) ValidateMessageIndex(_ context.Context, request requests.MessageIndex) url.Values {
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"limit": []string{
"required",
"numeric",
"min:1",
"max:20",
},
"skip": []string{
"required",
"numeric",
"min:0",
},
"contact": []string{
"required",
"min:1",
},
"query": []string{
"max:100",
},
"owner": []string{
"required",
phoneNumberRule,
},
},
})
return v.ValidateStruct()
}
// ValidateMessageSearch validates the requests.MessageSearch request
func (validator MessageHandlerValidator) ValidateMessageSearch(ctx context.Context, request requests.MessageSearch) url.Values {
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"owners": []string{
multipleContactPhoneNumberRule,
},
"types": []string{
multipleInRule + ":" + strings.Join([]string{
entities.MessageTypeCallMissed,
entities.MessageTypeMobileOriginated,
entities.MessageTypeMobileTerminated,
}, ","),
},
"statuses": []string{
multipleInRule + ":" + strings.Join([]string{
entities.MessageStatusPending,
entities.MessageStatusSent,
entities.MessageStatusDelivered,
entities.MessageStatusFailed,
entities.MessageStatusExpired,
entities.MessageStatusReceived,
}, ","),
},
"sort_by": []string{
"in:" + strings.Join([]string{
"created_at",
"owner",
"contact",
"type",
"status",
}, ","),
},
"limit": []string{
"required",
"numeric",
"min:1",
"max:200",
},
"skip": []string{
"required",
"numeric",
"min:0",
},
"query": []string{
"max:50",
},
"token": []string{
"required",
},
},
})
errors := v.ValidateStruct()
if len(errors) > 0 {
return errors
}
if !validator.tokenValidator.ValidateToken(ctx, request.IPAddress, request.Token) {
errors.Add("token", "The captcha token from turnstile is invalid")
}
return errors
}
// ValidateMessageEvent validates the requests.MessageEvent request
func (validator MessageHandlerValidator) ValidateMessageEvent(_ context.Context, request requests.MessageEvent) url.Values {
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"event_name": []string{
"required",
"in:" + strings.Join([]string{
string(entities.MessageEventNameSent),
string(entities.MessageEventNameFailed),
string(entities.MessageEventNameDelivered),
}, ","),
},
"messageID": []string{
"required",
"uuid",
},
},
})
return v.ValidateStruct()
}
// ValidateCallMissed validates the requests.MessageCallMissed request
func (validator MessageHandlerValidator) ValidateCallMissed(_ context.Context, request requests.MessageCallMissed) url.Values {
v := govalidator.New(govalidator.Options{
Data: &request,
Rules: govalidator.MapData{
"to": []string{
"required",
phoneNumberRule,
},
"from": []string{
"required",
},
"sim": []string{
"required",
"in:" + strings.Join([]string{
string(entities.SIM1),
string(entities.SIM2),
}, ","),
},
},
})
return v.ValidateStruct()
}