Ejemplo n.º 1
0
func cookbookHandler(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	pathArray := splitPath(r.URL.Path)
	cookbookResponse := make(map[string]interface{})

	opUser, oerr := actor.GetReqUser(r.Header.Get("X-OPS-USERID"))
	if oerr != nil {
		jsonErrorReport(w, r, oerr.Error(), oerr.Status())
		return
	}

	var numResults string
	r.ParseForm()
	if nrs, found := r.Form["num_versions"]; found {
		if len(nrs) < 0 {
			jsonErrorReport(w, r, "invalid num_versions", http.StatusBadRequest)
			return
		}
		numResults = nrs[0]
		err := util.ValidateNumVersions(numResults)
		if err != nil {
			jsonErrorReport(w, r, err.Error(), err.Status())
			return
		}
	}
	force := ""
	if f, fok := r.Form["force"]; fok {
		if len(f) > 0 {
			force = f[0]
		}
	}

	pathArrayLen := len(pathArray)

	/* 1 and 2 length path arrays only support GET */
	if pathArrayLen < 3 && r.Method != "GET" {
		jsonErrorReport(w, r, "Bad request.", http.StatusMethodNotAllowed)
		return
	} else if pathArrayLen < 3 && opUser.IsValidator() {
		jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
		return
	}

	/* chef-pedant is happier when checking if a validator can do something
	 * surprisingly late in the game. It wants the perm checks to be
	 * checked after the method for the end point is checked out as
	 * something it's going to handle, so, for instance, issuing a DELETE
	 * against an endpoint where that isn't allowed should respond with a
	 * 405, rather than a 403, which also makes sense in areas where
	 * validators shouldn't be able to do anything. *shrugs*
	 */

	if pathArrayLen == 1 || (pathArrayLen == 2 && pathArray[1] == "") {
		/* list all cookbooks */
		cookbookResponse = cookbook.CookbookLister(numResults)
	} else if pathArrayLen == 2 {
		/* info about a cookbook and all its versions */
		cookbookName := pathArray[1]
		/* Undocumented behavior - a cookbook name of _latest gets a
		 * list of the latest versions of all the cookbooks, and _recipe
		 * gets the recipes of the latest cookbooks. */
		if cookbookName == "_latest" {
			cookbookResponse = cookbook.CookbookLatest()
		} else if cookbookName == "_recipes" {
			rlist, nerr := cookbook.CookbookRecipes()
			if nerr != nil {
				jsonErrorReport(w, r, nerr.Error(), nerr.Status())
				return
			}
			enc := json.NewEncoder(w)
			if err := enc.Encode(&rlist); err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
			}
			return
		} else {
			cb, err := cookbook.Get(cookbookName)
			if err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusNotFound)
				return
			}
			/* Strange thing here. The API docs say if num_versions
			 * is not specified to return one cookbook, yet the
			 * spec indicates that if it's not set that all
			 * cookbooks should be returned. Most places *except
			 * here* that's the case, so it can't be changed in
			 * infoHashBase. Explicitly set numResults to all
			 * here. */
			if numResults == "" {
				numResults = "all"
			}
			cookbookResponse[cookbookName] = cb.InfoHash(numResults)
		}
	} else if pathArrayLen == 3 {
		/* get information about or manipulate a specific cookbook
		 * version */
		cookbookName := pathArray[1]
		var cookbookVersion string
		var vererr util.Gerror
		opUser, oerr := actor.GetReqUser(r.Header.Get("X-OPS-USERID"))
		if oerr != nil {
			jsonErrorReport(w, r, oerr.Error(), oerr.Status())
			return
		}
		if r.Method == "GET" && pathArray[2] == "_latest" { // might be other special vers
			cookbookVersion = pathArray[2]
		} else {
			cookbookVersion, vererr = util.ValidateAsVersion(pathArray[2])
			if vererr != nil {
				vererr := util.Errorf("Invalid cookbook version '%s'.", pathArray[2])
				jsonErrorReport(w, r, vererr.Error(), vererr.Status())
				return
			}
		}
		switch r.Method {
		case "DELETE", "GET":
			if opUser.IsValidator() {
				jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
				return
			}
			cb, err := cookbook.Get(cookbookName)
			if err != nil {
				if err.Status() == http.StatusNotFound {
					msg := fmt.Sprintf("Cannot find a cookbook named %s with version %s", cookbookName, cookbookVersion)
					jsonErrorReport(w, r, msg, err.Status())
				} else {
					jsonErrorReport(w, r, err.Error(), err.Status())
				}
				return
			}
			cbv, err := cb.GetVersion(cookbookVersion)
			if err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusNotFound)
				return
			}
			if r.Method == "DELETE" {
				if !opUser.IsAdmin() {
					jsonErrorReport(w, r, "You are not allowed to take this action.", http.StatusForbidden)
					return
				}
				err := cb.DeleteVersion(cookbookVersion)
				if err != nil {
					jsonErrorReport(w, r, err.Error(), err.Status())
					return
				}
				if lerr := loginfo.LogEvent(opUser, cbv, "delete"); lerr != nil {
					jsonErrorReport(w, r, lerr.Error(), http.StatusInternalServerError)
					return
				}
				/* If all versions are gone, remove the
				 * cookbook - seems to be the desired
				 * behavior. */
				if cb.NumVersions() == 0 {
					if cerr := cb.Delete(); cerr != nil {
						jsonErrorReport(w, r, cerr.Error(), http.StatusInternalServerError)
						return
					}
				}
			} else {
				/* Special JSON rendition of the
				 * cookbook with some but not all of
				 * the fields. */
				cookbookResponse = cbv.ToJSON(r.Method)
				/* Sometimes, but not always, chef needs
				 * empty slices of maps for these
				 * values. Arrrgh. */
				/* Doing it this way is absolutely
				 * insane. However, webui really wants
				 * this information, while chef-pedant
				 * absolutely does NOT want it there.
				 * knife seems happy without it as well.
				 * Until such time that this gets
				 * resolved in a non-crazy manner, for
				 * this only send that info back if it's
				 * a webui request. */
				if rs := r.Header.Get("X-Ops-Request-Source"); rs == "web" {
					chkDiv := []string{"definitions", "libraries", "attributes", "providers", "resources", "templates", "root_files", "files"}
					for _, cd := range chkDiv {
						if cookbookResponse[cd] == nil {
							cookbookResponse[cd] = make([]map[string]interface{}, 0)
						}
					}
				}
			}
		case "PUT":
			if !opUser.IsAdmin() {
				jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
				return
			}
			cbvData, jerr := parseObjJSON(r.Body)
			if jerr != nil {
				jsonErrorReport(w, r, jerr.Error(), http.StatusBadRequest)
				return
			}
			/* First, see if the cookbook already exists, &
			 * if not create it. Second, see if this
			 * specific version of the cookbook exists. If
			 * so, update it, otherwise, create it and set
			 * the latest version as needed. */
			cb, err := cookbook.Get(cookbookName)
			if err != nil {
				cb, err = cookbook.New(cookbookName)
				if err != nil {
					jsonErrorReport(w, r, err.Error(), err.Status())
					return
				}
				/* save it so we get the id with mysql
				 * for creating versions & such */
				serr := cb.Save()
				if serr != nil {
					jsonErrorReport(w, r, serr.Error(), http.StatusInternalServerError)
					return
				}
				if lerr := loginfo.LogEvent(opUser, cb, "create"); lerr != nil {
					jsonErrorReport(w, r, lerr.Error(), http.StatusInternalServerError)
					return
				}
			}
			cbv, err := cb.GetVersion(cookbookVersion)

			/* Does the cookbook_name in the URL and what's
			 * in the body match? */
			switch t := cbvData["cookbook_name"].(type) {
			case string:
				/* Only send this particular
				 * error if the cookbook version
				 * hasn't been created yet.
				 * Instead we want a slightly
				 * different version later. */
				if t != cookbookName && cbv == nil {
					terr := util.Errorf("Field 'name' invalid")
					jsonErrorReport(w, r, terr.Error(), terr.Status())
					return
				}
			default:
				// rather unlikely, I think, to
				// be able to get here past the
				// cookbook get. Punk out and
				// don't do anything

			}
			if err != nil {
				var nerr util.Gerror
				cbv, nerr = cb.NewVersion(cookbookVersion, cbvData)
				if nerr != nil {
					// If the new version failed to
					// take, and there aren't any
					// other versions of the cookbook
					// it needs to be deleted.
					if cb.NumVersions() == 0 {
						cb.Delete()
					}
					jsonErrorReport(w, r, nerr.Error(), nerr.Status())
					return
				}
				if lerr := loginfo.LogEvent(opUser, cbv, "create"); lerr != nil {
					jsonErrorReport(w, r, lerr.Error(), http.StatusInternalServerError)
					return
				}
				w.WriteHeader(http.StatusCreated)
			} else {
				err := cbv.UpdateVersion(cbvData, force)
				if err != nil {
					jsonErrorReport(w, r, err.Error(), err.Status())
					return
				}
				gerr := cb.Save()
				if gerr != nil {
					jsonErrorReport(w, r, gerr.Error(), http.StatusInternalServerError)
					return
				}
				if lerr := loginfo.LogEvent(opUser, cbv, "modify"); lerr != nil {
					jsonErrorReport(w, r, lerr.Error(), http.StatusInternalServerError)
					return
				}
			}
			/* API docs are wrong. The docs claim that this
			 * should have no response body, but in fact it
			 * wants some (not all) of the cookbook version
			 * data. */
			cookbookResponse = cbv.ToJSON(r.Method)
		default:
			jsonErrorReport(w, r, "Unrecognized method", http.StatusMethodNotAllowed)
			return
		}
	} else {
		/* Say what? Bad request. */
		jsonErrorReport(w, r, "Bad request", http.StatusBadRequest)
		return
	}

	enc := json.NewEncoder(w)
	if err := enc.Encode(&cookbookResponse); err != nil {
		jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
	}
}
Ejemplo n.º 2
0
func environmentHandler(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	accErr := checkAccept(w, r, "application/json")
	if accErr != nil {
		jsonErrorReport(w, r, accErr.Error(), http.StatusNotAcceptable)
		return
	}

	opUser, oerr := actor.GetReqUser(r.Header.Get("X-OPS-USERID"))
	if oerr != nil {
		jsonErrorReport(w, r, oerr.Error(), oerr.Status())
		return
	}

	pathArray := splitPath(r.URL.Path)
	envResponse := make(map[string]interface{})
	var numResults string
	r.ParseForm()
	if nrs, found := r.Form["num_versions"]; found {
		if len(nrs) < 0 {
			jsonErrorReport(w, r, "invalid num_versions", http.StatusBadRequest)
			return
		}
		numResults = nrs[0]
		err := util.ValidateNumVersions(numResults)
		if err != nil {
			jsonErrorReport(w, r, "You have requested an invalid number of versions (x >= 0 || 'all')", err.Status())
			return
		}
	}

	pathArrayLen := len(pathArray)

	if pathArrayLen == 1 {
		switch r.Method {
		case "GET":
			if opUser.IsValidator() {
				jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
				return
			}
			envList := environment.GetList()
			for _, env := range envList {
				envResponse[env] = util.CustomURL(fmt.Sprintf("/environments/%s", env))
			}
		case "POST":
			if !opUser.IsAdmin() {
				jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
				return
			}
			envData, jerr := parseObjJSON(r.Body)
			if jerr != nil {
				jsonErrorReport(w, r, jerr.Error(), http.StatusBadRequest)
				return
			}
			if _, ok := envData["name"].(string); !ok || envData["name"].(string) == "" {
				jsonErrorReport(w, r, "Environment name missing", http.StatusBadRequest)
				return
			}
			chefEnv, _ := environment.Get(envData["name"].(string))
			if chefEnv != nil {
				httperr := fmt.Errorf("Environment already exists")
				jsonErrorReport(w, r, httperr.Error(), http.StatusConflict)
				return
			}
			var eerr util.Gerror
			chefEnv, eerr = environment.NewFromJSON(envData)
			if eerr != nil {
				jsonErrorReport(w, r, eerr.Error(), eerr.Status())
				return
			}
			if err := chefEnv.Save(); err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusBadRequest)
				return
			}
			if lerr := loginfo.LogEvent(opUser, chefEnv, "create"); lerr != nil {
				jsonErrorReport(w, r, lerr.Error(), http.StatusInternalServerError)
				return
			}
			envResponse["uri"] = util.ObjURL(chefEnv)
			w.WriteHeader(http.StatusCreated)
		default:
			jsonErrorReport(w, r, "Unrecognized method", http.StatusMethodNotAllowed)
			return
		}
	} else if pathArrayLen == 2 {
		/* All of the 2 element operations return the environment
		 * object, so we do the json encoding in this block and return
		 * out. */
		envName := pathArray[1]
		env, err := environment.Get(envName)
		delEnv := false /* Set this to delete the environment after
		 * sending the json. */
		if err != nil {
			jsonErrorReport(w, r, err.Error(), http.StatusNotFound)
			return
		}
		switch r.Method {
		case "GET", "DELETE":
			/* We don't actually have to do much here. */
			if r.Method == "DELETE" {
				if !opUser.IsAdmin() {
					jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
					return
				}
				if envName == "_default" {
					jsonErrorReport(w, r, "The '_default' environment cannot be modified.", http.StatusMethodNotAllowed)
					return
				}
				delEnv = true
			} else {
				if opUser.IsValidator() {
					jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
					return
				}
			}
		case "PUT":
			if !opUser.IsAdmin() {
				jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
				return
			}
			envData, jerr := parseObjJSON(r.Body)
			if jerr != nil {
				jsonErrorReport(w, r, jerr.Error(), http.StatusBadRequest)
				return
			}
			if envData == nil {
				jsonErrorReport(w, r, "No environment data in body at all!", http.StatusBadRequest)
				return
			}
			if _, ok := envData["name"]; !ok {
				//envData["name"] = envName
				jsonErrorReport(w, r, "Environment name missing", http.StatusBadRequest)
				return
			}
			jsonName, sterr := util.ValidateAsString(envData["name"])
			if sterr != nil {
				jsonErrorReport(w, r, sterr.Error(), sterr.Status())
				return
			} else if jsonName == "" {
				jsonErrorReport(w, r, "Environment name missing", http.StatusBadRequest)
				return
			}
			if envName != envData["name"].(string) {
				env, err = environment.Get(envData["name"].(string))
				if err == nil {
					jsonErrorReport(w, r, "Environment already exists", http.StatusConflict)
					return
				}
				var eerr util.Gerror
				env, eerr = environment.NewFromJSON(envData)
				if eerr != nil {
					jsonErrorReport(w, r, eerr.Error(), eerr.Status())
					return
				}
				w.WriteHeader(http.StatusCreated)
				oldenv, olderr := environment.Get(envName)
				if olderr == nil {
					oldenv.Delete()
				}
			} else {
				if jsonName == "" {
					envData["name"] = envName
				}
				if err := env.UpdateFromJSON(envData); err != nil {
					jsonErrorReport(w, r, err.Error(), err.Status())
					return
				}
			}
			if err := env.Save(); err != nil {
				jsonErrorReport(w, r, err.Error(), err.Status())
				return
			}
			if lerr := loginfo.LogEvent(opUser, env, "modify"); lerr != nil {
				jsonErrorReport(w, r, lerr.Error(), http.StatusInternalServerError)
				return
			}
		default:
			jsonErrorReport(w, r, "Unrecognized method", http.StatusMethodNotAllowed)
			return
		}
		enc := json.NewEncoder(w)
		if err := enc.Encode(&env); err != nil {
			jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
			return
		}
		if delEnv {
			err := env.Delete()
			if err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
				return
			}
			if lerr := loginfo.LogEvent(opUser, env, "delete"); lerr != nil {
				jsonErrorReport(w, r, lerr.Error(), http.StatusInternalServerError)
				return
			}
		}
		return
	} else if pathArrayLen == 3 {
		envName := pathArray[1]
		op := pathArray[2]

		if op == "cookbook_versions" && r.Method != "POST" || op != "cookbook_versions" && r.Method != "GET" {
			jsonErrorReport(w, r, "Unrecognized method", http.StatusMethodNotAllowed)
			return
		}

		if opUser.IsValidator() {
			jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
			return
		}

		env, err := environment.Get(envName)
		if err != nil {
			jsonErrorReport(w, r, err.Error(), http.StatusNotFound)
			return
		}

		switch op {
		case "cookbook_versions":
			/* Chef Server API docs aren't even remotely
			 * right here. What it actually wants is the
			 * usual hash of info for the latest or
			 * constrained version. Weird. */
			cbVer, jerr := parseObjJSON(r.Body)
			if jerr != nil {
				errmsg := jerr.Error()
				if !strings.Contains(errmsg, "Field") {
					errmsg = "invalid JSON"
				} else {
					errmsg = jerr.Error()
				}
				jsonErrorReport(w, r, errmsg, http.StatusBadRequest)
				return
			}

			if _, ok := cbVer["run_list"]; !ok {
				jsonErrorReport(w, r, "POSTed JSON badly formed.", http.StatusMethodNotAllowed)
				return
			}
			deps, err := cookbook.DependsCookbooks(cbVer["run_list"].([]string), env.CookbookVersions)
			if err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusPreconditionFailed)
				return
			}
			/* Need our own encoding here too. */
			enc := json.NewEncoder(w)
			if err := enc.Encode(&deps); err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
			}
			return
		case "cookbooks":
			envResponse = env.AllCookbookHash(numResults)
		case "nodes":
			nodeList, err := node.GetFromEnv(envName)
			if err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
				return
			}
			for _, chefNode := range nodeList {
				envResponse[chefNode.Name] = util.ObjURL(chefNode)
			}
		case "recipes":
			envRecipes := env.RecipeList()
			/* And... we have to do our own json response
			 * here. Hmph. */
			/* TODO: make the JSON encoding stuff its own
			 * function. Dunno why I never thought of that
			 * before now for this. */
			enc := json.NewEncoder(w)
			if err := enc.Encode(&envRecipes); err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
			}
			return
		default:
			jsonErrorReport(w, r, "Bad request", http.StatusBadRequest)
			return

		}
	} else if pathArrayLen == 4 {
		envName := pathArray[1]
		/* op is either "cookbooks" or "roles", and opName is the name
		 * of the object op refers to. */
		op := pathArray[2]
		opName := pathArray[3]

		if r.Method != "GET" {
			jsonErrorReport(w, r, "Method not allowed", http.StatusMethodNotAllowed)
			return
		}
		if opUser.IsValidator() {
			jsonErrorReport(w, r, "You are not allowed to perform this action", http.StatusForbidden)
			return
		}
		env, err := environment.Get(envName)
		if err != nil {
			jsonErrorReport(w, r, err.Error(), http.StatusNotFound)
			return
		}

		/* Biting the bullet and not redirecting this to
		 * /roles/NAME/environments/NAME. The behavior is exactly the
		 * same, but it makes clients and chef-pedant somewhat unhappy
		 * to not have this way available. */
		if op == "roles" {
			role, err := role.Get(opName)
			if err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusNotFound)
				return
			}
			var runList []string
			if envName == "_default" {
				runList = role.RunList
			} else {
				runList = role.EnvRunLists[envName]
			}
			envResponse["run_list"] = runList
		} else if op == "cookbooks" {
			cb, err := cookbook.Get(opName)
			if err != nil {
				jsonErrorReport(w, r, err.Error(), http.StatusNotFound)
				return
			}
			/* Here and, I think, here only, if num_versions isn't
			 * set it's supposed to return ALL matching versions.
			 * API docs are wrong here. */
			if numResults == "" {
				numResults = "all"
			}
			envResponse[opName] = cb.ConstrainedInfoHash(numResults, env.CookbookVersions[opName])
		} else {
			/* Not an op we know. */
			jsonErrorReport(w, r, "Bad request - too many elements in path", http.StatusBadRequest)
			return
		}
	} else {
		/* Bad number of path elements. */
		jsonErrorReport(w, r, "Bad request - too many elements in path", http.StatusBadRequest)
		return
	}

	enc := json.NewEncoder(w)
	if err := enc.Encode(&envResponse); err != nil {
		jsonErrorReport(w, r, err.Error(), http.StatusInternalServerError)
	}
}