# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.

NGX_USER=${NGX_USER:-nobody}

if [ -z "$NGX_GROUP" ]; then
    if [ $NGX_USER = nobody ]; then
        if grep nobody /etc/group 2>&1 >/dev/null; then
            echo "checking for nobody group ... found"
            NGX_GROUP=nobody
        else
            echo "checking for nobody group ... not found"

            if grep nogroup /etc/group 2>&1 >/dev/null; then
                echo "checking for nogroup group ... found"
                NGX_GROUP=nogroup
            else
                echo "checking for nogroup group ... not found"
                NGX_GROUP=nobody
            fi
        fi
    else
        NGX_GROUP=$NGX_USER
    fi
fi

ngx_feature="poll()"
ngx_feature_name=
ngx_feature_run=no
ngx_feature_incs="#include <poll.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int  n; struct pollfd  pl;
                  pl.fd = 0;
                  pl.events = 0;
                  pl.revents = 0;
                  n = poll(&pl, 1, 0);
                  if (n == -1) return 1"
. auto/feature

if [ $ngx_found = no ]; then
    EVENT_POLL=NONE
fi

ngx_feature="/dev/poll"
ngx_feature_name="NGX_HAVE_DEVPOLL"
ngx_feature_run=no
ngx_feature_incs="#include <sys/devpoll.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int  n, dp; struct dvpoll  dvp;
                  dp = 0;
                  dvp.dp_fds = NULL;
                  dvp.dp_nfds = 0;
                  dvp.dp_timeout = 0;
                  n = ioctl(dp, DP_POLL, &dvp);
                  if (n == -1) return 1"
. auto/feature

if [ $ngx_found = yes ]; then
    CORE_SRCS="$CORE_SRCS $DEVPOLL_SRCS"
    EVENT_MODULES="$EVENT_MODULES $DEVPOLL_MODULE"
    EVENT_FOUND=YES
fi

if test -z "$NGX_KQUEUE_CHECKED"; then
    ngx_feature="kqueue"
    ngx_feature_name="NGX_HAVE_KQUEUE"
    ngx_feature_run=no
    ngx_feature_incs="#include <sys/event.h>"
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test="int kq; kq = kqueue()"
    . auto/feature

    if [ $ngx_found = yes ]; then

        have=NGX_HAVE_CLEAR_EVENT . auto/have
        EVENT_MODULES="$EVENT_MODULES $KQUEUE_MODULE"
        CORE_SRCS="$CORE_SRCS $KQUEUE_SRCS"
        EVENT_FOUND=YES

        ngx_feature="kqueue's NOTE_LOWAT"
        ngx_feature_name="NGX_HAVE_LOWAT_EVENT"
        ngx_feature_run=no
        ngx_feature_incs="#include <sys/event.h>"
        ngx_feature_path=
        ngx_feature_libs=
        ngx_feature_test="struct kevent  kev;
                          kev.fflags = NOTE_LOWAT;"
        . auto/feature

        ngx_feature="kqueue's EVFILT_TIMER"
        ngx_feature_name="NGX_HAVE_TIMER_EVENT"
        ngx_feature_run=yes
        ngx_feature_incs="#include <sys/event.h>
                          #include <sys/time.h>"
        ngx_feature_path=
        ngx_feature_libs=
        ngx_feature_test="int      kq;
                  struct kevent    kev;
                  struct timespec  ts;

                  if ((kq = kqueue()) == -1) return 1;

                  kev.ident = 0;
                  kev.filter = EVFILT_TIMER;
                  kev.flags = EV_ADD|EV_ENABLE;
                  kev.fflags = 0;
                  kev.data = 1000;
                  kev.udata = 0;

                  ts.tv_sec = 0;
                  ts.tv_nsec = 0;

                  if (kevent(kq, &kev, 1, &kev, 1, &ts) == -1) return 1;

                  if (kev.flags & EV_ERROR) return 1;"

        . auto/feature
    fi
fi

if [ "$NGX_SYSTEM" = "NetBSD" ]; then

    # NetBSD 2.0 incompatibly defines kevent.udata as "intptr_t"

    cat << END >> $NGX_AUTO_CONFIG_H

#define NGX_KQUEUE_UDATA_T

END

else
    cat << END >> $NGX_AUTO_CONFIG_H

#define NGX_KQUEUE_UDATA_T  (void *)

END

fi

ngx_feature="crypt()"
ngx_feature_name=
ngx_feature_run=no
ngx_feature_incs=
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="crypt(\"test\", \"salt\");"
. auto/feature

if [ $ngx_found = no ]; then

    ngx_feature="crypt() in libcrypt"
    ngx_feature_name=
    ngx_feature_run=no
    ngx_feature_incs=
    ngx_feature_path=
    ngx_feature_libs=-lcrypt
    . auto/feature

    if [ $ngx_found = yes ]; then
        CRYPT_LIB="-lcrypt"
    fi
fi

ngx_feature="F_READAHEAD"
ngx_feature_name="NGX_HAVE_F_READAHEAD"
ngx_feature_run=no
ngx_feature_incs="#include <fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="fcntl(0, F_READAHEAD, 1);"
. auto/feature

ngx_feature="posix_fadvise()"
ngx_feature_name="NGX_HAVE_POSIX_FADVISE"
ngx_feature_run=no
ngx_feature_incs="#include <fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="posix_fadvise(0, 0, 0, POSIX_FADV_SEQUENTIAL);"
. auto/feature

ngx_feature="O_DIRECT"
ngx_feature_name="NGX_HAVE_O_DIRECT"
ngx_feature_run=no
ngx_feature_incs="#include <fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="fcntl(0, F_SETFL, O_DIRECT);"
. auto/feature

if [ $ngx_found = yes -a "$NGX_SYSTEM" = "Linux" ]; then
    have=NGX_HAVE_ALIGNED_DIRECTIO . auto/have
fi

ngx_feature="F_NOCACHE"
ngx_feature_name="NGX_HAVE_F_NOCACHE"
ngx_feature_run=no
ngx_feature_incs="#include <fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="fcntl(0, F_NOCACHE, 1);"
. auto/feature

ngx_feature="directio()"
ngx_feature_name="NGX_HAVE_DIRECTIO"
ngx_feature_run=no
ngx_feature_incs="#include <sys/types.h>
                  #include <sys/fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="directio(0, DIRECTIO_ON);"
. auto/feature

ngx_feature="statfs()"
ngx_feature_name="NGX_HAVE_STATFS"
ngx_feature_run=no
ngx_feature_incs="$NGX_INCLUDE_SYS_PARAM_H
                  $NGX_INCLUDE_SYS_MOUNT_H
                  $NGX_INCLUDE_SYS_VFS_H"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct statfs  fs;
                  statfs(\".\", &fs);"
. auto/feature

ngx_feature="statvfs()"
ngx_feature_name="NGX_HAVE_STATVFS"
ngx_feature_run=no
ngx_feature_incs="#include <sys/types.h>
                  #include <sys/statvfs.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct statvfs  fs;
                  statvfs(\".\", &fs);"
. auto/feature

ngx_feature="dlopen()"
ngx_feature_name="NGX_HAVE_DLOPEN"
ngx_feature_run=no
ngx_feature_incs="#include <dlfcn.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="dlopen(NULL, RTLD_NOW | RTLD_GLOBAL); dlsym(NULL, NULL)"
. auto/feature

if [ $ngx_found != yes ]; then

    ngx_feature="dlopen() in libdl"
    ngx_feature_libs="-ldl"
    . auto/feature

    if [ $ngx_found = yes ]; then
        CORE_LIBS="$CORE_LIBS -ldl"
        NGX_LIBDL="-ldl"
    fi
fi

ngx_feature="sched_yield()"
ngx_feature_name="NGX_HAVE_SCHED_YIELD"
ngx_feature_run=no
ngx_feature_incs="#include <sched.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="sched_yield()"
. auto/feature

if [ $ngx_found != yes ]; then

    ngx_feature="sched_yield() in librt"
    ngx_feature_libs="-lrt"
    . auto/feature

    if [ $ngx_found = yes ]; then
        CORE_LIBS="$CORE_LIBS -lrt"
    fi
fi

ngx_feature="SO_SETFIB"
ngx_feature_name="NGX_HAVE_SETFIB"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_SETFIB, NULL, 0)"
. auto/feature

ngx_feature="SO_REUSEPORT"
ngx_feature_name="NGX_HAVE_REUSEPORT"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_REUSEPORT, NULL, 0)"
. auto/feature

ngx_feature="SO_ACCEPTFILTER"
ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)"
. auto/feature

# BSD way to get IPv4 datagram destination address

ngx_feature="IP_RECVDSTADDR"
ngx_feature_name="NGX_HAVE_IP_RECVDSTADDR"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <netinet/in.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_RECVDSTADDR, NULL, 0)"
. auto/feature

# Linux way to get IPv4 datagram destination address

ngx_feature="IP_PKTINFO"
ngx_feature_name="NGX_HAVE_IP_PKTINFO"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <netinet/in.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_PKTINFO, NULL, 0)"
. auto/feature

# RFC 3542 way to get IPv6 datagram destination address

ngx_feature="IPV6_RECVPKTINFO"
ngx_feature_name="NGX_HAVE_IPV6_RECVPKTINFO"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <netinet/in.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, IPPROTO_IPV6, IPV6_RECVPKTINFO, NULL, 0)"
. auto/feature

ngx_feature="TCP_DEFER_ACCEPT"
ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <netinet/in.h>
                  #include <netinet/tcp.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_DEFER_ACCEPT, NULL, 0)"
. auto/feature

ngx_feature="TCP_KEEPIDLE"
ngx_feature_name="NGX_HAVE_KEEPALIVE_TUNABLE"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <netinet/in.h>
                  #include <netinet/tcp.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_KEEPIDLE, NULL, 0);
                  setsockopt(0, IPPROTO_TCP, TCP_KEEPINTVL, NULL, 0);
                  setsockopt(0, IPPROTO_TCP, TCP_KEEPCNT, NULL, 0)"
. auto/feature

ngx_feature="TCP_FASTOPEN"
ngx_feature_name="NGX_HAVE_TCP_FASTOPEN"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <netinet/in.h>
                  #include <netinet/tcp.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_FASTOPEN, NULL, 0)"
. auto/feature

ngx_feature="TCP_INFO"
ngx_feature_name="NGX_HAVE_TCP_INFO"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <netinet/in.h>
                  #include <netinet/tcp.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="socklen_t optlen = sizeof(struct tcp_info);
                  struct tcp_info ti;
                  ti.tcpi_rtt = 0;
                  ti.tcpi_rttvar = 0;
                  ti.tcpi_snd_cwnd = 0;
                  ti.tcpi_rcv_space = 0;
                  getsockopt(0, IPPROTO_TCP, TCP_INFO, &ti, &optlen)"
. auto/feature

ngx_feature="accept4()"
ngx_feature_name="NGX_HAVE_ACCEPT4"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="accept4(0, NULL, NULL, SOCK_NONBLOCK)"
. auto/feature

if [ $NGX_FILE_AIO = YES ]; then

    ngx_feature="kqueue AIO support"
    ngx_feature_name="NGX_HAVE_FILE_AIO"
    ngx_feature_run=no
    ngx_feature_incs="#include <aio.h>"
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test="int  n; struct aiocb  iocb;
                      iocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
                      n = aio_read(&iocb)"
    . auto/feature

    if [ $ngx_found = yes ]; then
        CORE_SRCS="$CORE_SRCS $FILE_AIO_SRCS"
    fi

    if [ $ngx_found = no ]; then

        ngx_feature="Linux AIO support"
        ngx_feature_name="NGX_HAVE_FILE_AIO"
        ngx_feature_run=no
        ngx_feature_incs="#include <linux/aio_abi.h>
                          #include <sys/eventfd.h>"
        ngx_feature_path=
        ngx_feature_libs=
        ngx_feature_test="struct iocb  iocb;
                          iocb.aio_lio_opcode = IOCB_CMD_PREAD;
                          iocb.aio_flags = IOCB_FLAG_RESFD;
                          iocb.aio_resfd = -1;
                          (void) eventfd(0, 0)"
        . auto/feature

        if [ $ngx_found = yes ]; then
            have=NGX_HAVE_EVENTFD . auto/have
            have=NGX_HAVE_SYS_EVENTFD_H . auto/have
            CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS"
        fi
    fi

    if [ $ngx_found = no ]; then

        ngx_feature="Linux AIO support (SYS_eventfd)"
        ngx_feature_incs="#include <linux/aio_abi.h>
                          #include <sys/syscall.h>"
        ngx_feature_test="int  n = SYS_eventfd;
                          struct iocb  iocb;
                          iocb.aio_lio_opcode = IOCB_CMD_PREAD;
                          iocb.aio_flags = IOCB_FLAG_RESFD;
                          iocb.aio_resfd = -1;"
        . auto/feature

        if [ $ngx_found = yes ]; then
            have=NGX_HAVE_EVENTFD . auto/have
            CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS"
        fi
    fi

    if [ $ngx_found = no ]; then
        cat << END

$0: no supported file AIO was found
Currently file AIO is supported on FreeBSD 4.3+ and Linux 2.6.22+ only

END
        exit 1
    fi

else

    ngx_feature="eventfd()"
    ngx_feature_name="NGX_HAVE_EVENTFD"
    ngx_feature_run=no
    ngx_feature_incs="#include <sys/eventfd.h>"
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test="(void) eventfd(0, 0)"
    . auto/feature

    if [ $ngx_found = yes ]; then
        have=NGX_HAVE_SYS_EVENTFD_H . auto/have
    fi

    if [ $ngx_found = no ]; then

        ngx_feature="eventfd() (SYS_eventfd)"
        ngx_feature_incs="#include <sys/syscall.h>"
        ngx_feature_test="int n = SYS_eventfd"
        . auto/feature
    fi
fi

have=NGX_HAVE_UNIX_DOMAIN . auto/have

ngx_feature_libs=

# C types

ngx_type="int"; . auto/types/sizeof

ngx_type="long"; . auto/types/sizeof

ngx_type="long long"; . auto/types/sizeof

ngx_type="void *"; . auto/types/sizeof; ngx_ptr_size=$ngx_size
ngx_param=NGX_PTR_SIZE; ngx_value=$ngx_size; . auto/types/value

# POSIX types

NGX_INCLUDE_AUTO_CONFIG_H="#include \"ngx_auto_config.h\""

ngx_type="uint32_t"; ngx_types="u_int32_t"; . auto/types/typedef
ngx_type="uint64_t"; ngx_types="u_int64_t"; . auto/types/typedef

ngx_type="sig_atomic_t"; ngx_types="int"; . auto/types/typedef
. auto/types/sizeof
ngx_param=NGX_SIG_ATOMIC_T_SIZE; ngx_value=$ngx_size; . auto/types/value

ngx_type="socklen_t"; ngx_types="int"; . auto/types/typedef

ngx_type="in_addr_t"; ngx_types="uint32_t u_int32_t"; . auto/types/typedef

ngx_type="in_port_t"; ngx_types="u_short"; . auto/types/typedef

ngx_type="rlim_t"; ngx_types="int"; . auto/types/typedef

. auto/types/uintptr_t

. auto/endianness

ngx_type="size_t"; . auto/types/sizeof
ngx_param=NGX_MAX_SIZE_T_VALUE; ngx_value=$ngx_max_value; . auto/types/value
ngx_param=NGX_SIZE_T_LEN; ngx_value=$ngx_max_len; . auto/types/value

ngx_type="off_t"; . auto/types/sizeof
ngx_param=NGX_MAX_OFF_T_VALUE; ngx_value=$ngx_max_value; . auto/types/value
ngx_param=NGX_OFF_T_LEN; ngx_value=$ngx_max_len; . auto/types/value

ngx_type="time_t"; . auto/types/sizeof
ngx_param=NGX_TIME_T_SIZE; ngx_value=$ngx_size; . auto/types/value
ngx_param=NGX_TIME_T_LEN; ngx_value=$ngx_max_len; . auto/types/value
ngx_param=NGX_MAX_TIME_T_VALUE; ngx_value=$ngx_max_value; . auto/types/value

# syscalls, libc calls and some features

if [ $NGX_IPV6 = YES ]; then
    ngx_feature="AF_INET6"
    ngx_feature_name="NGX_HAVE_INET6"
    ngx_feature_run=no
    ngx_feature_incs="#include <sys/socket.h>
                      #include <netinet/in.h>
                      #include <arpa/inet.h>"
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test="struct sockaddr_in6  sin6;
                      sin6.sin6_family = AF_INET6;"
    . auto/feature
fi

ngx_feature="setproctitle()"
ngx_feature_name="NGX_HAVE_SETPROCTITLE"
ngx_feature_run=no
ngx_feature_incs="#include <stdlib.h>"
ngx_feature_path=
ngx_feature_libs=$NGX_SETPROCTITLE_LIB
ngx_feature_test="setproctitle(\"test\");"
. auto/feature

ngx_feature="pread()"
ngx_feature_name="NGX_HAVE_PREAD"
ngx_feature_run=no
ngx_feature_incs=
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="char buf[1]; ssize_t n; n = pread(0, buf, 1, 0);
                  if (n == -1) return 1"
. auto/feature

ngx_feature="pwrite()"
ngx_feature_name="NGX_HAVE_PWRITE"
ngx_feature_run=no
ngx_feature_incs=
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="char buf[1]; ssize_t n; n = pwrite(1, buf, 1, 0);
                  if (n == -1) return 1"
. auto/feature

# pwritev() was introduced in FreeBSD 6 and Linux 2.6.30, glibc 2.10

ngx_feature="pwritev()"
ngx_feature_name="NGX_HAVE_PWRITEV"
ngx_feature_run=no
ngx_feature_incs='#include <sys/uio.h>'
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="char buf[1]; struct iovec vec[1]; ssize_t n;
                  vec[0].iov_base = buf;
                  vec[0].iov_len = 1;
                  n = pwritev(1, vec, 1, 0);
                  if (n == -1) return 1"
. auto/feature

ngx_feature="sys_nerr"
ngx_feature_name="NGX_SYS_NERR"
ngx_feature_run=value
ngx_feature_incs='#include <errno.h>
                  #include <stdio.h>'
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test='printf("%d", sys_nerr);'
. auto/feature

if [ $ngx_found = no ]; then

    # Cygiwn defines _sys_nerr
    ngx_feature="_sys_nerr"
    ngx_feature_name="NGX_SYS_NERR"
    ngx_feature_run=value
    ngx_feature_incs='#include <errno.h>
                      #include <stdio.h>'
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test='printf("%d", _sys_nerr);'
    . auto/feature
fi

if [ $ngx_found = no ]; then

    # Solaris has no sys_nerr
    ngx_feature='maximum errno'
    ngx_feature_name=NGX_SYS_NERR
    ngx_feature_run=value
    ngx_feature_incs='#include <errno.h>
                      #include <string.h>
                      #include <stdio.h>'
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test='int  n;
                      char *p;
                      for (n = 1; n < 1000; n++) {
                          errno = 0;
                          p = strerror(n);
                          if (errno == EINVAL
                              || p == NULL
                              || strncmp(p, "Unknown error", 13) == 0)
                          {
                              break;
                          }
                      }
                      printf("%d", n);'
    . auto/feature
fi

ngx_feature="localtime_r()"
ngx_feature_name="NGX_HAVE_LOCALTIME_R"
ngx_feature_run=no
ngx_feature_incs="#include <time.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct tm t; time_t c=0; localtime_r(&c, &t)"
. auto/feature

ngx_feature="posix_memalign()"
ngx_feature_name="NGX_HAVE_POSIX_MEMALIGN"
ngx_feature_run=no
ngx_feature_incs="#include <stdlib.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="void *p; int n; n = posix_memalign(&p, 4096, 4096);
                  if (n != 0) return 1"
. auto/feature

ngx_feature="memalign()"
ngx_feature_name="NGX_HAVE_MEMALIGN"
ngx_feature_run=no
ngx_feature_incs="#include <stdlib.h>
                  #include <malloc.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="void *p; p = memalign(4096, 4096);
                  if (p == NULL) return 1"
. auto/feature

ngx_feature="mmap(MAP_ANON|MAP_SHARED)"
ngx_feature_name="NGX_HAVE_MAP_ANON"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/mman.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="void *p;
                  p = mmap(NULL, 4096, PROT_READ|PROT_WRITE,
                           MAP_ANON|MAP_SHARED, -1, 0);
                  if (p == MAP_FAILED) return 1;"
. auto/feature

ngx_feature='mmap("/dev/zero", MAP_SHARED)'
ngx_feature_name="NGX_HAVE_MAP_DEVZERO"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/mman.h>
                  #include <sys/stat.h>
                  #include <fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test='void *p; int  fd;
                  fd = open("/dev/zero", O_RDWR);
                  p = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
                  if (p == MAP_FAILED) return 1;'
. auto/feature

ngx_feature="System V shared memory"
ngx_feature_name="NGX_HAVE_SYSVSHM"
ngx_feature_run=yes
ngx_feature_incs="#include <sys/ipc.h>
                  #include <sys/shm.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int  id;
                  id = shmget(IPC_PRIVATE, 4096, (SHM_R|SHM_W|IPC_CREAT));
                  if (id == -1) return 1;
                  shmctl(id, IPC_RMID, NULL);"
. auto/feature

ngx_feature="POSIX semaphores"
ngx_feature_name="NGX_HAVE_POSIX_SEM"
ngx_feature_run=yes
ngx_feature_incs="#include <semaphore.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="sem_t  sem;
                  if (sem_init(&sem, 1, 0) == -1) return 1;
                  sem_destroy(&sem);"
. auto/feature

if [ $ngx_found = no ]; then

    # Linux has POSIX semaphores in libpthread
    ngx_feature="POSIX semaphores in libpthread"
    ngx_feature_libs=-lpthread
    . auto/feature

    if [ $ngx_found = yes ]; then
        CORE_LIBS="$CORE_LIBS -lpthread"
    fi
fi

if [ $ngx_found = no ]; then

    # Solaris has POSIX semaphores in librt
    ngx_feature="POSIX semaphores in librt"
    ngx_feature_libs=-lrt
    . auto/feature

    if [ $ngx_found = yes ]; then
        CORE_LIBS="$CORE_LIBS -lrt"
    fi
fi

ngx_feature="struct msghdr.msg_control"
ngx_feature_name="NGX_HAVE_MSGHDR_MSG_CONTROL"
ngx_feature_run=no
ngx_feature_incs="#include <sys/socket.h>
                  #include <stdio.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct msghdr  msg;
                  printf(\"%d\", (int) sizeof(msg.msg_control))"
. auto/feature

ngx_feature="ioctl(FIONBIO)"
ngx_feature_name="NGX_HAVE_FIONBIO"
ngx_feature_run=no
ngx_feature_incs="#include <sys/ioctl.h>
                  #include <stdio.h>
                  $NGX_INCLUDE_SYS_FILIO_H"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="int i = FIONBIO; printf(\"%d\", i)"
. auto/feature

ngx_feature="struct tm.tm_gmtoff"
ngx_feature_name="NGX_HAVE_GMTOFF"
ngx_feature_run=no
ngx_feature_incs="#include <time.h>
                  #include <stdio.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct tm  tm; tm.tm_gmtoff = 0;
                  printf(\"%d\", (int) tm.tm_gmtoff)"
. auto/feature

ngx_feature="struct dirent.d_namlen"
ngx_feature_name="NGX_HAVE_D_NAMLEN"
ngx_feature_run=no
ngx_feature_incs="#include <dirent.h>
                  #include <stdio.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct dirent  dir; dir.d_namlen = 0;
                  printf(\"%d\", (int) dir.d_namlen)"
. auto/feature

ngx_feature="struct dirent.d_type"
ngx_feature_name="NGX_HAVE_D_TYPE"
ngx_feature_run=no
ngx_feature_incs="#include <dirent.h>
                  #include <stdio.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct dirent  dir; dir.d_type = DT_REG;
                  printf(\"%d\", (int) dir.d_type)"
. auto/feature

ngx_feature="sysconf(_SC_NPROCESSORS_ONLN)"
ngx_feature_name="NGX_HAVE_SC_NPROCESSORS_ONLN"
ngx_feature_run=no
ngx_feature_incs=
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="sysconf(_SC_NPROCESSORS_ONLN)"
. auto/feature

ngx_feature="openat(), fstatat()"
ngx_feature_name="NGX_HAVE_OPENAT"
ngx_feature_run=no
ngx_feature_incs="#include <sys/types.h>
                  #include <sys/stat.h>
                  #include <fcntl.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="struct stat sb;
                  openat(AT_FDCWD, \".\", O_RDONLY|O_NOFOLLOW);
                  fstatat(AT_FDCWD, \".\", &sb, AT_SYMLINK_NOFOLLOW);"
. auto/feature

ngx_feature="getaddrinfo()"
ngx_feature_name="NGX_HAVE_GETADDRINFO"
ngx_feature_run=no
ngx_feature_incs="#include <sys/types.h>
                  #include <sys/socket.h>
                  #include <netdb.h>"
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test='struct addrinfo *res;
                  if (getaddrinfo("localhost", NULL, NULL, &res) != 0) return 1;
                  freeaddrinfo(res)'
. auto/feature


<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Loader;

use Twig\Error\LoaderError;
use Twig\Source;

/**
 * Loads template from the filesystem.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FilesystemLoader implements LoaderInterface
{
    /** Identifier of the main namespace. */
    const MAIN_NAMESPACE = '__main__';

    protected $paths = [];
    protected $cache = [];
    protected $errorCache = [];

    private $rootPath;

    /**
     * @param string|array $paths    A path or an array of paths where to look for templates
     * @param string|null  $rootPath The root path common to all relative paths (null for getcwd())
     */
    public function __construct($paths = [], string $rootPath = null)
    {
        $this->rootPath = (null === $rootPath ? getcwd() : $rootPath).\DIRECTORY_SEPARATOR;
        if (false !== $realPath = realpath($rootPath)) {
            $this->rootPath = $realPath.\DIRECTORY_SEPARATOR;
        }

        if ($paths) {
            $this->setPaths($paths);
        }
    }

    /**
     * Returns the paths to the templates.
     */
    public function getPaths(string $namespace = self::MAIN_NAMESPACE): array
    {
        return isset($this->paths[$namespace]) ? $this->paths[$namespace] : [];
    }

    /**
     * Returns the path namespaces.
     *
     * The main namespace is always defined.
     */
    public function getNamespaces(): array
    {
        return array_keys($this->paths);
    }

    /**
     * @param string|array $paths A path or an array of paths where to look for templates
     */
    public function setPaths($paths, string $namespace = self::MAIN_NAMESPACE): void
    {
        if (!\is_array($paths)) {
            $paths = [$paths];
        }

        $this->paths[$namespace] = [];
        foreach ($paths as $path) {
            $this->addPath($path, $namespace);
        }
    }

    /**
     * @throws LoaderError
     */
    public function addPath(string $path, string $namespace = self::MAIN_NAMESPACE): void
    {
        // invalidate the cache
        $this->cache = $this->errorCache = [];

        $checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
        if (!is_dir($checkPath)) {
            throw new LoaderError(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
        }

        $this->paths[$namespace][] = rtrim($path, '/\\');
    }

    /**
     * @throws LoaderError
     */
    public function prependPath(string $path, string $namespace = self::MAIN_NAMESPACE): void
    {
        // invalidate the cache
        $this->cache = $this->errorCache = [];

        $checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
        if (!is_dir($checkPath)) {
            throw new LoaderError(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
        }

        $path = rtrim($path, '/\\');

        if (!isset($this->paths[$namespace])) {
            $this->paths[$namespace][] = $path;
        } else {
            array_unshift($this->paths[$namespace], $path);
        }
    }

    public function getSourceContext(string $name): Source
    {
        if (null === $path = $this->findTemplate($name)) {
            return new Source('', $name, '');
        }

        return new Source(file_get_contents($path), $name, $path);
    }

    public function getCacheKey(string $name): string
    {
        if (null === $path = $this->findTemplate($name)) {
            return '';
        }
        $len = \strlen($this->rootPath);
        if (0 === strncmp($this->rootPath, $path, $len)) {
            return substr($path, $len);
        }

        return $path;
    }

    /**
     * @return bool
     */
    public function exists(string $name)
    {
        $name = $this->normalizeName($name);

        if (isset($this->cache[$name])) {
            return true;
        }

        return null !== $this->findTemplate($name, false);
    }

    public function isFresh(string $name, int $time): bool
    {
        // false support to be removed in 3.0
        if (null === $path = $this->findTemplate($name)) {
            return false;
        }

        return filemtime($path) < $time;
    }

    /**
     * @return string|null
     */
    protected function findTemplate(string $name, bool $throw = true)
    {
        $name = $this->normalizeName($name);

        if (isset($this->cache[$name])) {
            return $this->cache[$name];
        }

        if (isset($this->errorCache[$name])) {
            if (!$throw) {
                return null;
            }

            throw new LoaderError($this->errorCache[$name]);
        }

        try {
            $this->validateName($name);

            list($namespace, $shortname) = $this->parseName($name);
        } catch (LoaderError $e) {
            if (!$throw) {
                return null;
            }

            throw $e;
        }

        if (!isset($this->paths[$namespace])) {
            $this->errorCache[$name] = sprintf('There are no registered paths for namespace "%s".', $namespace);

            if (!$throw) {
                return null;
            }

            throw new LoaderError($this->errorCache[$name]);
        }

        foreach ($this->paths[$namespace] as $path) {
            if (!$this->isAbsolutePath($path)) {
                $path = $this->rootPath.$path;
            }

            if (is_file($path.'/'.$shortname)) {
                if (false !== $realpath = realpath($path.'/'.$shortname)) {
                    return $this->cache[$name] = $realpath;
                }

                return $this->cache[$name] = $path.'/'.$shortname;
            }
        }

        $this->errorCache[$name] = sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths[$namespace]));

        if (!$throw) {
            return null;
        }

        throw new LoaderError($this->errorCache[$name]);
    }

    private function normalizeName(string $name): string
    {
        return preg_replace('#/{2,}#', '/', str_replace('\\', '/', $name));
    }

    private function parseName(string $name, string $default = self::MAIN_NAMESPACE): array
    {
        if (isset($name[0]) && '@' == $name[0]) {
            if (false === $pos = strpos($name, '/')) {
                throw new LoaderError(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
            }

            $namespace = substr($name, 1, $pos - 1);
            $shortname = substr($name, $pos + 1);

            return [$namespace, $shortname];
        }

        return [$default, $name];
    }

    private function validateName(string $name): void
    {
        if (false !== strpos($name, "\0")) {
            throw new LoaderError('A template name cannot contain NUL bytes.');
        }

        $name = ltrim($name, '/');
        $parts = explode('/', $name);
        $level = 0;
        foreach ($parts as $part) {
            if ('..' === $part) {
                --$level;
            } elseif ('.' !== $part) {
                ++$level;
            }

            if ($level < 0) {
                throw new LoaderError(sprintf('Looks like you try to load a template outside configured directories (%s).', $name));
            }
        }
    }

    private function isAbsolutePath(string $file): bool
    {
        return strspn($file, '/\\', 0, 1)
            || (\strlen($file) > 3 && ctype_alpha($file[0])
                && ':' === $file[1]
                && strspn($file, '/\\', 2, 1)
            )
            || null !== parse_url($file, PHP_URL_SCHEME)
        ;
    }
}