func errorsParse(c *caddy.Controller) (*ErrorHandler, error) {
// Very important that we make a pointer because the startup
// function that opens the log file must have access to the
// same instance of the handler, not a copy.
handler := &ErrorHandler{ErrorPages: make(map[int]string)}
cfg := httpserver.GetConfig(c)
optionalBlock := func() (bool, error) {
var hadBlock bool
for c.NextBlock() {
hadBlock = true
what := c.Val()
if !c.NextArg() {
return hadBlock, c.ArgErr()
}
where := c.Val()
if what == "log" {
if where == "visible" {
handler.Debug = true
} else {
handler.LogFile = where
if c.NextArg() {
if c.Val() == "{" {
c.IncrNest()
logRoller, err := httpserver.ParseRoller(c)
if err != nil {
return hadBlock, err
}
handler.LogRoller = logRoller
}
}
}
} else {
// Error page; ensure it exists
where = filepath.Join(cfg.Root, where)
f, err := os.Open(where)
if err != nil {
log.Printf("[WARNING] Unable to open error page '%s': %v", where, err)
}
f.Close()
if what == "*" {
if handler.GenericErrorPage != "" {
return hadBlock, c.Errf("Duplicate status code entry: %s", what)
}
handler.GenericErrorPage = where
} else {
whatInt, err := strconv.Atoi(what)
if err != nil {
return hadBlock, c.Err("Expecting a numeric status code or '*', got '" + what + "'")
}
if _, exists := handler.ErrorPages[whatInt]; exists {
return hadBlock, c.Errf("Duplicate status code entry: %s", what)
}
handler.ErrorPages[whatInt] = where
}
}
}
return hadBlock, nil
}
for c.Next() {
// weird hack to avoid having the handler values overwritten.
if c.Val() == "}" {
continue
}
// Configuration may be in a block
hadBlock, err := optionalBlock()
if err != nil {
return handler, err
}
// Otherwise, the only argument would be an error log file name or 'visible'
if !hadBlock {
if c.NextArg() {
if c.Val() == "visible" {
handler.Debug = true
} else {
handler.LogFile = c.Val()
}
}
}
}
return handler, nil
}
func logParse(c *caddy.Controller) ([]Rule, error) {
var rules []Rule
for c.Next() {
args := c.RemainingArgs()
var logRoller *httpserver.LogRoller
if c.NextBlock() {
if c.Val() == "rotate" {
if c.NextArg() {
if c.Val() == "{" {
var err error
logRoller, err = httpserver.ParseRoller(c)
if err != nil {
return nil, err
}
// This part doesn't allow having something after the rotate block
if c.Next() {
if c.Val() != "}" {
return nil, c.ArgErr()
}
}
}
}
}
}
if len(args) == 0 {
// Nothing specified; use defaults
rules = append(rules, Rule{
PathScope: "/",
OutputFile: DefaultLogFilename,
Format: DefaultLogFormat,
Roller: logRoller,
})
} else if len(args) == 1 {
// Only an output file specified
rules = append(rules, Rule{
PathScope: "/",
OutputFile: args[0],
Format: DefaultLogFormat,
Roller: logRoller,
})
} else {
// Path scope, output file, and maybe a format specified
format := DefaultLogFormat
if len(args) > 2 {
switch args[2] {
case "{common}":
format = CommonLogFormat
case "{combined}":
format = CombinedLogFormat
default:
format = args[2]
}
}
rules = append(rules, Rule{
PathScope: args[0],
OutputFile: args[1],
Format: format,
Roller: logRoller,
})
}
}
return rules, nil
}