ripple-api/app/v1/token.go

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package v1
import (
"crypto/md5"
"database/sql"
"encoding/json"
"fmt"
"github.com/osuripple/api/common"
"golang.org/x/crypto/bcrypt"
)
type tokenNewInData struct {
// either username or userid must be given in the request.
// if none is given, the request is trashed.
Username string `json:"username"`
UserID int `json:"id"`
Password string `json:"password"`
Privileges int `json:"privileges"`
Description string `json:"description"`
}
type tokenNewOutData struct {
Username string `json:"username"`
ID int `json:"id"`
Privileges int `json:"privileges"`
Token string `json:"token,omitempty"`
Banned bool `json:"banned"`
}
// TokenNewPOST is the handler for POST /token/new.
func TokenNewPOST(md common.MethodData) (r common.Response) {
data := tokenNewInData{}
err := json.Unmarshal(md.RequestData, &data)
if err != nil {
r = ErrBadJSON
return
}
var miss []string
if data.Username == "" && data.UserID == 0 {
miss = append(miss, "username|id")
}
if data.Password == "" {
miss = append(miss, "password")
}
if len(miss) != 0 {
r = ErrMissingField(miss...)
return
}
var q *sql.Row
const base = "SELECT id, username, rank, password_md5, password_version, allowed FROM users "
if data.UserID != 0 {
q = md.DB.QueryRow(base+"WHERE id = ? LIMIT 1", data.UserID)
} else {
q = md.DB.QueryRow(base+"WHERE username = ? LIMIT 1", data.Username)
}
ret := tokenNewOutData{}
var (
rank int
pw string
pwVersion int
allowed int
)
err = q.Scan(&ret.ID, &ret.Username, &rank, &pw, &pwVersion, &allowed)
switch {
case err == sql.ErrNoRows:
r.Code = 404
r.Message = "No user with that username/id was found."
return
case err != nil:
md.C.Error(err)
r = Err500
return
}
if pwVersion == 1 {
r.Code = 418 // Teapots!
r.Message = "That user still has a password in version 1. Unfortunately, in order for the API to check for the password to be OK, the user has to first log in through the website."
return
}
if err := bcrypt.CompareHashAndPassword([]byte(pw), []byte(fmt.Sprintf("%x", md5.Sum([]byte(data.Password))))); err != nil {
if err == bcrypt.ErrMismatchedHashAndPassword {
r.Code = 403
r.Message = "That password doesn't match!"
return
}
md.C.Error(err)
r = Err500
return
}
if allowed == 0 {
r.Code = 200
r.Message = "That user is banned."
ret.Banned = true
r.Data = ret
return
}
ret.Privileges = int(common.Privileges(data.Privileges).CanOnly(rank))
var (
tokenStr string
tokenMD5 string
)
for {
tokenStr = common.RandomString(32)
tokenMD5 = fmt.Sprintf("%x", md5.Sum([]byte(tokenStr)))
ret.Token = tokenStr
id := 0
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err := md.DB.QueryRow("SELECT id FROM tokens WHERE token=? LIMIT 1", tokenMD5).Scan(&id)
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if err == sql.ErrNoRows {
break
}
if err != nil {
md.C.Error(err)
r = Err500
return
}
}
_, err = md.DB.Exec("INSERT INTO tokens(user, privileges, description, token) VALUES (?, ?, ?, ?)", ret.ID, ret.Privileges, data.Description, tokenMD5)
if err != nil {
md.C.Error(err)
r = Err500
return
}
r.Code = 200
r.Data = ret
return
}