#include <sys/types.h>
#include <stddef.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <syslog.h>
#include <pthread.h>
#include <fcntl.h>
#include <err.h>
#include <sys/un.h>
#include <sys/socket.h>

#include "usuals.h"
#include "httpauthd.h"
#include "defaults.h"

/* -----------------------------------------------------------------------
 * Handlers Registered Here
 */

extern ha_handler_t simple_handler;
extern ha_handler_t ldap_handler;
extern ha_handler_t ntlm_handler;

/* This is the list of all available handlers */
ha_handler_t* g_handlerlist[] =
{
  &simple_handler,
  &ldap_handler,
  &ntlm_handler
};

typedef struct httpauth_loaded
{
  ha_context_t ctx;
  struct httpauth_loaded* next;
}
httpauth_loaded_t;

/* The list of handlers in use */
httpauth_loaded_t* g_handlers = NULL;

/* -----------------------------------------------------------------------
 * Structures and Constants
 */

/* A command definition. Used in parsing */
typedef struct httpauth_command
{
  const char* name;
  int code;
  int args;
  const char** headers;
}
httpauth_command_t;

/* The various valid headers for the auth command */
const char* kAuthHeaders[] =
{
  "Authorization",
  "Proxy-Authorization",
  NULL
};

/* The command definitions */
const httpauth_command_t kCommands[] =
{
  { "auth", REQTYPE_AUTH, 3, kAuthHeaders },
  { "quit", REQTYPE_QUIT, 0, 0            },
  { NULL,   -1, -1                        }
};

typedef struct httpauth_thread
{
  pthread_t tid;
  int fd;
}
httpauth_thread_t;

/* -----------------------------------------------------------------------
 * Default Settings
 */

#define DEFAULT_CONFIG  "/usr/local/etc/httpauthd.conf"
#define DEFAULT_SOCKET  "/var/run/httpauthd.sock"
#define DEFAULT_MAXTHREADS  32


/* -----------------------------------------------------------------------
 * Globals
 */

int g_daemonized = 0;                     /* Currently running as a daemon */
int g_debugging = 0;                      /* In debug mode */
const char* g_socket = DEFAULT_SOCKET;    /* The socket to communicate on */
int g_maxthreads = DEFAULT_MAXTHREADS;    /* The maximum number of threads */

/* For main loop and signal handlers */
int g_quit = 0;

/* The main thread */
pthread_t g_mainthread;

/* The main mutex */
pthread_mutex_t g_mutex;
pthread_mutexattr_t g_mutexattr;

/* -----------------------------------------------------------------------
 * Forward Declarations
 */

int usage();
void* httpauth_thread(void* arg);
int httpauth_processor(int ifd, int ofd);
int process_auth(ha_request_t* req, ha_response_t* resp,
                  ha_buffer_t* outb);
int config_parse(const char* file, ha_buffer_t* buf);


/* -----------------------------------------------------------------------
 * Main Program
 */

int main(int argc, char* argv[])
{
  const char* conf = DEFAULT_CONFIG;
  httpauth_thread_t* threads = NULL;
  httpauth_loaded_t* h;
  int daemonize = 1;
  ha_buffer_t cbuf;
  int r, i, sock;
  int ch = 0;

  /* Keep note of the main thread */
  g_mainthread = pthread_self();

  /* Create the main mutex */
  if(pthread_mutexattr_init(&g_mutexattr) != 0 ||
     pthread_mutexattr_settype(&g_mutexattr, HA_MUTEX_TYPE) ||
     pthread_mutex_init(&g_mutex, &g_mutexattr) != 0)
    errx(1, "threading problem. can't create mutex");

  /* Parse the arguments nicely */
	while((ch = getopt(argc, argv, "df:X")) != -1)
	{
		switch(ch)
		{
		/*  Don't daemonize  */
    case 'd':
      daemonize = 0;
      break;

    /* The configuration file */
    case 'f':
      conf = optarg;
      break;

    /* Process console input instead */
		case 'X':
      g_debugging = 1;
			break;

    /* Usage information */
		case '?':
		default:
			return usage();
			break;
		}
	}

	argc -= optind;
	argv += optind;

  if(argc != 0)
    return usage();


  /* From here on out we need to quit in an orderly fashion */

  /* Run global initialization on all handlers */
  for(i = 0; i < countof(g_handlerlist); i++)
  {
    if(g_handlerlist[i]->f_init)
    {
      if((r = (g_handlerlist[i]->f_init)(NULL)) == -1)
        goto finally;
    }
  }

  /* Initialize our configuration buffer */
  ha_bufinit(&cbuf);


  /* Parse the configuration */
  config_parse(conf, &cbuf);


  if(!g_debugging)
  {
    struct sockaddr_un sau;

    /* Create the thread buffers */
    threads = (httpauth_thread_t*)malloc(sizeof(httpauth_thread_t) * g_maxthreads);
    if(!threads)
      errx(1, "out of memory");

    /* Create the socket */
    sock = socket(AF_UNIX, SOCK_STREAM, 0);
    if(sock < 0)
      err(1, "couldn't open socket");


    /* Unlink the socket file if it exists */
    /* TODO: Is this safe? */
    unlink(g_socket);

    /* Setup the socket */
    strncmp(sau.sun_path, g_socket, sizeof(sau.sun_path));
    sau.sun_path[sizeof(sau.sun_path) - 1] = 0;

    /* Bind to the socket */
    if(bind(sock, (struct sockaddr*)&sau,
        sizeof(sau) - (sizeof(sau.sun_path) - strlen(sau.sun_path))))
      err(1, "couldn't bind to socket: %s", sau.sun_path);


    /* Let 5 connections queue up */
    if(listen(sock, 5) != 0)
      err(1, "couldn't listen on socket");
  }


  /* TODO: Enable signal processing here */

  /* Initialize all the handlers */
  for(h = g_handlers; h; h = h->next)
  {
    if(h->ctx.handler->f_init)
    {
      if((r = (h->ctx.handler->f_init)(&(h->ctx))) == -1)
        goto finally;
    }
  }


  /* This is for debugging the internal processes */
  if(g_debugging)
  {
    r = httpauth_processor(0, 1);
    goto finally;
  }


  /* This is the daemon section of the code */
  else
  {
    /* TODO: Daemonize here, and disconnect from terminal */

    /* Open the system log */
    openlog("httpauthd", 0, LOG_AUTHPRIV);
    g_daemonized = 1;


    /* Now loop and accept the connections */
    while(!g_quit)
    {
      int fd;

      /* TODO: A nice way to break out of the loop here */

      fd = accept(sock, 0, 0);
      if(fd == -1)
      {
        switch(errno)
        {
        case EAGAIN:
        case EINTR:
          break;

        case ECONNABORTED:
        case EPROTO:
          ha_message(LOG_ERR, "couldn't accept a connection");
          break;

        default:
          ha_message(LOG_ERR, "couldn't accept a connection");
          g_quit = 1;
          break;
        };

        continue;
      }

      /* Look for thread and also clean up others */
      for(i = 0; i < g_maxthreads; i++)
      {
        /* Clean up quit threads */
        if(threads[i].tid != 0)
        {
          if(threads[i].fd == 0)
          {
            pthread_join(threads[i].tid, NULL);
            threads[i].tid = 0;
          }
        }

        /* Start a new thread if neccessary */
        if(fd != 0 && threads[i].tid == 0)
        {
          threads[i].fd = fd;
          r = pthread_create(&(threads[i].tid), NULL, httpauth_thread,
                             (void*)(threads + i));
          if(r != 0)
          {
            errno = r;
            ha_message(LOG_ERR, "couldn't create thread");
            g_quit = 1;
            break;
          }

          fd = 0;
        }
      }

      /* Check to make sure we have a thread */
      if(fd != 0)
      {
        ha_messagex(LOG_ERR, "too many connections open (max %d)", g_maxthreads);
        httpauth_respond(fd, HA_SERVER_ERROR, "too many connections");
        shutdown(fd, SHUT_RDWR);
      }
    }

    /* TODO: Quit all threads here */

    r = 0;
  }

finally:

  /* Uninitialize all the handlers */
  for(h = g_handlers; h; h = h->next)
  {
    if(h->ctx.handler->f_destroy)
      (h->ctx.handler->f_destroy)(&(h->ctx));
  }

  /* Run global destroy for all handlers */
  for(i = 0; i < countof(g_handlerlist); i++)
  {
    if(g_handlerlist[i]->f_destroy)
      (g_handlerlist[i]->f_destroy)(NULL);
  }

  /* Clean up memory and stuff */
  ha_buffree(&cbuf);


  /* Close the mutex */
  pthread_mutex_destroy(&g_mutex);
  pthread_mutexattr_destroy(&g_mutexattr);
  return r == -1 ? 1 : 0;
}

int usage()
{
  fprintf(stderr, "usage: httpauthd [-dX] [-f conffile]\n");
  return 2;
}

void* httpauth_thread(void* arg)
{
  int fd, r;

  ASSERT(arg);

  fd = (int)arg;
  return (void*)httpauth_processor(fd, fd);
}

/* -----------------------------------------------------------------------
 * Command Parsing and Handling
 */

int httpauth_read(int ifd, ha_request_t* req,
                    ha_buffer_t* buf)
{
  const httpauth_command_t* cmd;
  char* t;
  int i, r;
  int more = 1;

  ASSERT(req && buf);
  ASSERT(ifd != -1);

  /* Clean up the request header */
  memset(req, 0, sizeof(*req));
  req->type = -1;

  /* This guarantees a bit of memory allocated, and resets buffer */
  ha_bufreset(buf);

  r = ha_bufreadline(ifd, buf);
  if(r == -1)
    return -1;

  /* Check if this is the last line */
  if(r == 0)
    more = 0;

  /* Check to see if we got anything */
  if(ha_buflen(buf) == 0)
  {
    req->type = REQTYPE_IGNORE;
    return more;
  }

  /* Find the first space in the line */
  t = ha_bufparseword(buf, " \t");

  if(t)
  {
    /* Figure out which command it is */
    for(cmd = kCommands; cmd->name; cmd++)
    {
      if(strcasecmp(t, cmd->name) == 0)
      {
        req->type = cmd->code;
        break;
      }
    }
  }

  /* Check for invalid command */
  if(req->type == -1)
    return more;

  /* Now parse the arguments if any */
  for(i = 0; i < cmd->args; i++)
    req->args[i] = ha_bufparseword(buf, " \t");


  /* Now skip anything else we have in the buffer */
  ha_bufskip(buf);


  /* If we need headers, then read them now */
  if(cmd->headers)
  {
    const char** head;  /* For iterating through valid headers */
    int valid = 0;      /* The last header was valid */
    i = 0;              /* The header we're working with */

    for(;;)
    {
      /* Make sure we have more data */
      if(!more)
        break;

      r = ha_bufreadline(ifd, buf);
      if(r == -1)
        return -1;

      /* Check if this is the last line */
      if(r == 0)
        more = 0;

      /* An empty line is the end of the headers */
      if(ha_buflen(buf) == 0)
        break;

      /* Check if the header starts with a space */
      if(isspace(ha_bufchar(buf)))
      {
        /* Skip all the spaces */
        while(ha_buflen(buf) > 0 && isspace(ha_bufchar(buf)))
          ha_bufeat(buf);

        /* An empty line is the end of the headers
            even if that line has spaces on it */
        if(ha_buflen(buf) == 0)
          break;

        /* A header that has data on it but started
          with a space continues the previous header */
        if(valid && i > 0)
        {
          t = ha_bufparseline(buf, 0);
          if(t)
          {
            char* t2 = (char*)req->headers[i - 1].data + strlen(req->headers[i - 1].data);

            /* Fill the area between the end of the last
              valid header and this with spaces */
            memset(t2, ' ', t - t2);
          }
        }
      }
      else
      {
        if(i < MAX_HEADERS)
        {
          t = ha_bufparseword(buf, ":");

          if(t)
          {
            for(head = cmd->headers; ; head++)
            {
              if(!(*head))
              {
                t = NULL;
                break;
              }

              if(strcasecmp(t, *head) == 0)
                break;
            }
          }

          if(t)
          {
            req->headers[i].name = t;
            req->headers[i].data = ha_bufparseline(buf, 1);
            i++;
          }

          valid = (t != NULL) ? 1 : 0;
        }
      }

      ha_bufskip(buf);
    }
  }

  return more;
}

int write_data(int ofd, const char* data)
{
  int r;

  ASSERT(data);
  ASSERT(ofd != -1);

  while(*data != 0)
  {
    r = write(ofd, data, strlen(data));

    if(r > 0)
      data += r;

    else if(r == -1)
    {
      if(errno == EAGAIN || errno == EINTR)
        continue;

      /* The other end closed. no message */
      if(errno != EPIPE)
        ha_message(LOG_ERR, "couldn't write data");

      return -1;
    }
  }

  return 0;
}

int httpauth_respond(int ofd, int code, const char* msg)
{
  const char* t;
  char num[16];

  ASSERT(ofd != -1);
  ASSERT(code > 99 && code < 1000);

  sprintf(num, "%d", code);

  if(write_data(ofd, num) == -1 ||
     write_data(ofd, " ") == -1)
    return -1;

  switch(code)
  {
  case HA_SERVER_ERROR:
    t = "Internal Error ";
    break;
  case HA_SERVER_BADREQ:
    t = "Bad Request ";
    break;
  case HA_SERVER_DECLINE:
    t = "Unauthorized ";
    break;
  default:
    t = NULL;
    break;
  };

  if(t && write_data(ofd, t) == -1)
    return -1;

  if(msg)
  {
    if(write_data(ofd, "[") == -1 ||
       write_data(ofd, msg) == -1 ||
       write_data(ofd, "]") == -1)
      return -1;
  }

  return write_data(ofd, "\n");
}

const char kHeaderDelimiter[] = ": ";

int httpauth_write(int ofd, ha_response_t* resp)
{
	int i;
  int wrote = 0;

  ASSERT(ofd != -1);
  ASSERT(resp);

  if(httpauth_respond(ofd, resp->code, resp->detail) == -1)
    return -1;

  for(i = 0; i < MAX_HEADERS; i++)
  {
	  if(resp->headers[i].name)
    {
      if(write_data(ofd, resp->headers[i].name) == -1 ||
         write_data(ofd, kHeaderDelimiter) == -1 ||
         write_data(ofd, resp->headers[i].data) == -1 ||
         write_data(ofd, "\n") == -1)
        return -1;

      wrote = 1;
    }
  }

  if(wrote && write_data(ofd, "\n") == -1)
    return -1;

  return 0;
}

int httpauth_ready(int ofd, ha_buffer_t* buf)
{
  const char* t;
  httpauth_loaded_t* h;

  ASSERT(ofd != -1);
  ASSERT(buf);

  /* We send a ready banner to our client */

  for(h = g_handlers; h; h = h->next)
  {
    if(h != g_handlers)
      ha_bufjoin(buf);

    ha_bufmcat(buf, (h != g_handlers) ? " " : "",
              h->ctx.name, NULL);
  }

  if(ha_buferr(buf))
    return httpauth_respond(ofd, HA_SERVER_ERROR, NULL);
  else
    return httpauth_respond(ofd, HA_SERVER_READY, ha_bufdata(buf));
}

int httpauth_processor(int ifd, int ofd)
{
  ha_buffer_t inb;
  ha_buffer_t outb;
  ha_request_t req;
  ha_response_t resp;
  int result = -1;
  int r;

  ASSERT(ifd != -1);
  ASSERT(ofd != -1);

  /* Initialize the memory buffers */
  ha_bufinit(&inb);
  ha_bufinit(&outb);

  if(httpauth_ready(ofd, &outb) == -1)
  {
    result = 1;
    goto finally;
  }

  /* Now loop and handle the commands */
  while(result == -1)
  {
    ha_bufreset(&outb);
    ha_bufreset(&inb);

    r = httpauth_read(ifd, &req, &inb);
    if(r == -1 || ha_buferr(&inb))
    {
      httpauth_respond(ofd, HA_SERVER_ERROR, NULL);
      result = 1;
      continue;
    }

    if(r == 0)
      result = 0;

    switch(req.type)
    {
    case REQTYPE_AUTH:

      r = process_auth(&req, &resp, &outb);
      if(r == -1 || ha_buferr(&outb))
      {
        httpauth_respond(ofd, HA_SERVER_ERROR, NULL);
        result = 1;
        continue;
      }

      if(httpauth_write(ofd, &resp) == -1)
      {
        result = 1;
        continue;
      }

      break;


    case REQTYPE_QUIT:
      result = 0;
      break;


    default:
      if(httpauth_respond(ofd, HA_SERVER_BADREQ, "Unknown command") == -1)
      {
        result = -1;
        continue;
      }

      break;
    };
  }

  if(ifd == ofd)
    shutdown(ofd, SHUT_RDWR);
  else
    close(ofd);

finally:
  ha_buffree(&outb);
  ha_buffree(&inb);

  return result;
}

int process_auth(ha_request_t* req, ha_response_t* resp,
                  ha_buffer_t* outb)
{
  httpauth_loaded_t* h;

  ASSERT(req && resp && outb);

  /* Clear out our response */
  memset(resp, 0, sizeof(*resp));

  /* Check our connection argument */
  if(!req->args[AUTH_ARG_CONN] || !(req->args[AUTH_ARG_CONN][0]))
  {
    ha_messagex(LOG_ERR, "Missing connection ID in request");
    resp->detail = "Missing connection ID";
    resp->code = HA_SERVER_BADREQ;
    return 0;
  }

  /* Check our uri argument */
  if(!req->args[AUTH_ARG_URI] || !(req->args[AUTH_ARG_URI][0]))
  {
    ha_messagex(LOG_ERR, "Missing URI in request");
    resp->detail = "Missing URI";
    resp->code = HA_SERVER_BADREQ;
    return 0;
  }

  /* Check our connection arguments */
  if(!req->args[AUTH_ARG_METHOD] || !(req->args[AUTH_ARG_METHOD][0]))
  {
    ha_messagex(LOG_ERR, "Missing method in request");
    resp->detail = "Missing method";
    resp->code = HA_SERVER_BADREQ;
    return 0;
  }


  /* Find a handler for this type */
  for(h = g_handlers; h; h = h->next)
  {
    if(strcasecmp(h->ctx.name, req->args[0]) == 0)
    {
      /* Now let the handler handle it */
      if(h->ctx.handler->f_process)
        return (h->ctx.handler->f_process)(&(h->ctx), req, resp, outb);

      return 0;
    }
  }

  ha_messagex(LOG_ERR, "Unknown authentication type: %s", req->args[0]);
  resp->detail = "Unknown authentication type";
  resp->code = HA_SERVER_BADREQ;
  return -1;
}

/* -----------------------------------------------------------------------
 * Configuration
 */

ha_context_t* config_addhandler(ha_buffer_t* buf, const char* alias,
                                ha_handler_t* handler, const ha_context_t* defaults)
{
  httpauth_loaded_t* loaded;
  int len;

  ASSERT(buf && alias && handler && defaults);

  len = sizeof(httpauth_loaded_t) + handler->context_size;

  loaded = (httpauth_loaded_t*)ha_bufmalloc(buf, len);
  if(!loaded)
    errx(1, "out of memory");

  memset(loaded, 0, len);
  memcpy(&(loaded->ctx), defaults, sizeof(ha_context_t));

  if(handler->context_size)
  {
    void* mem = ((unsigned char*)loaded) + sizeof(httpauth_loaded_t);

    /* Initialize the defaults properly */
    if(handler->context_default)
      memcpy(mem, handler->context_default, handler->context_size);

    loaded->ctx.data = mem;
  }

  else
  {
    loaded->ctx.data = NULL;
  }

  loaded->ctx.name = (char*)alias;
  loaded->ctx.handler = handler;

  if(!g_handlers)
  {
    g_handlers = loaded;
  }
  else
  {
    httpauth_loaded_t* l = g_handlers;

    for(;;)
    {
      if(strcasecmp(alias, l->ctx.name) == 0)
        errx(1, "duplicate handler section for '%s'", alias);

      if(!(l->next))
        break;

      l = l->next;
    }

    l->next = loaded;
  }

  return &(loaded->ctx);
}


int config_parse(const char* file, ha_buffer_t* buf)
{
  ha_context_t defaults;
  ha_context_t* ctx = NULL;
  int line = 0;
  int fd;
  const char** t;
  char* name;
  char* value;
  int more = 1;
  int recog;
  int r, i;

  ASSERT(file && buf);

  /* Open the configuration file */
  fd = open(file, O_RDONLY);
  if(fd == -1)
    err(1, "couldn't open configuration file: %s", file);

  /* These are the default options for the contexts */
  memset(&defaults, 0, sizeof(defaults));
  defaults.types = 0xFFFFFFFF;          /* All types by default */
  defaults.cache_timeout = DEFAULT_TIMEOUT;   /* Timeout for cache */
  defaults.cache_max = DEFAULT_CACHEMAX;

  ha_bufreset(buf);

  /* Read each line and process */
  while(more)
  {
    ha_bufskip(buf);

    if((more = ha_bufreadline(fd, buf)) == -1)
      return -1;

    line++;

    /* Eat all white space at beginning of line */
    while(ha_buflen(buf) && isspace(ha_bufchar(buf)))
      ha_bufeat(buf);

    /* Skip blank lines */
    if(ha_buflen(buf) == 0)
      continue;

    /* Skip comment lines */
    if(ha_bufchar(buf) == '#')
      continue;

    /* Check for a handler */
    if(ha_bufchar(buf) == '[')
    {
      ha_handler_t* handler = NULL;
      const char* x;

      ha_bufeat(buf);
      name = ha_bufparseline(buf, 1);

      if(!name || name[strlen(name) - 1] != ']')
        errx(1, "configuration section invalid (line %d)", line);


      /* remove the bracket */
      name[strlen(name) - 1] = 0;


      /* Look for a handler with this type */
      for(i = 0; i < countof(g_handlerlist); i++)
      {
        if(g_handlerlist[i] && g_handlerlist[i]->type &&
           strcasecmp(name, g_handlerlist[i]->type) == 0)
        {
          handler = g_handlerlist[i];
          break;
        }
      }

      if(handler == NULL)
        errx(1, "unknown handler type '%s' (line %d)", name, line);

      /* If we had a last handler then add it to handlers */
      ctx = config_addhandler(buf, name, handler, &defaults);

      /* Rest doesn't apply to handler headers */
      continue;
    }


    /* Parse out the name */
    name = ha_bufparseword(buf, ":");
    if(!name || !name[0])
      errx(1, "configuration file invalid (line %d)", line);

    strlwr(name);

    /* And get the rest of the line */
    value = ha_bufparseline(buf, 1);
    if(value == NULL)
      errx(1, "configuration missing value at (line %d)", line);


    recog = 0;

    /* Is this the global section? */
    if(!ctx)
    {
      /* Look and see if that's a name we want */
      if(strcmp("socket", name) == 0)
      {
        g_socket = value;
        recog = 1;
      }

      else if(strcmp("maxthreads", name) == 0)
      {
        if(ha_confint(name, value, 1, 256, &g_maxthreads) == -1)
          exit(1);
        recog = 1;
      }

    }

    /* Otherwise we're in a handler */
    else
    {
      if(strcmp("alias", name) == 0)
      {
        ctx->name = value;
        recog = 1;
      }

      if(ctx->handler->f_config)
      {
        r = (ctx->handler->f_config)(ctx, name, value);
        if(r == -1)
          return -1;

        if(!recog && r)
          recog = 1;
      }
    }

    /* Options that are legal in both global and internal sections */
    if(!recog)
    {
      if(strcmp(name, "cachetimeout") == 0)
      {
        int v;
        if(ha_confint(name, value, 0, 86400, &v) == HA_ERROR)
          exit(1); /* Message already printed */

        (ctx ? ctx : &defaults)->cache_timeout = v;
        recog = 1;
      }

      else if(strcmp(name, "cachemax") == 0)
      {
        int v;
        if(ha_confint(name, value, 0, 0x7FFFFFFF, &v) == HA_ERROR)
          exit(1); /* Message already printed */

        (ctx ? ctx : &defaults)->cache_max = v;
        recog = 1;
      }

      else if(strcmp(name, "authtypes") == 0)
      {
        int types = 0;
        char* t;

        strlwr(value);

        /* Split the line into tokens at the spaces */
        while(*value)
        {
          while(*value && isspace(*value))
            value++;

          t = value;

          while(*t && !isspace(*t))
            t++;

          if(strncmp(value, "basic", 5) == 0)
            types |= HA_TYPE_BASIC;

          else if(strncmp(value, "digest", 6) == 0)
            types |= HA_TYPE_DIGEST;

          else if(strncmp(value, "ntlm", 4) == 0)
            types |= HA_TYPE_NTLM;

          else
            errx(1, "invalid type for '%s': %s (line %d)", name, value, line);

          value = t;
        }

        if(types == 0)
          errx(1, "no authentication types for '%s' (line %d)", name, line);

        (ctx ? ctx : &defaults)->types = types;
        recog = 1;
      }
    }

    if(!recog)
      errx(1, "unrecognized configuration setting '%s' (line %d)", name, line);
  }

  if(!g_handlers)
    ha_messagex(LOG_INFO, "no handlers found in configuration file");

  return 0;
}