+int
+main()
+{
+ pid_t pid;
+ int fd, ptyfd, ttyfd, status;
+
+ pid = fork();
+ if (pid < 0) { /* failed */
+ exit(1);
+ } else if (pid > 0) { /* parent */
+ waitpid(pid, &status, 0);
+ if (WIFEXITED(status))
+ exit(WEXITSTATUS(status));
+ else
+ exit(2);
+ } else { /* child */
+ close(0); close(1); close(2);
+ setsid();
+ openpty(&ptyfd, &ttyfd, NULL, NULL, NULL);
+ fd = open("/dev/tty", O_RDWR | O_NOCTTY);
+ if (fd >= 0)
+ exit(3); /* Acquired ctty: broken */
+ else
+ exit(0); /* Did not acquire ctty: OK */
+ }
+}
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ AC_DEFINE(SSHD_ACQUIRES_CTTY)
+ ],
+ [
+ AC_MSG_RESULT(cross-compiling, assuming yes)
+ ]
+ )
+fi
+
+if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
+ test "x$check_for_hpux_broken_getaddrinfo" = "x1"; then
+ AC_MSG_CHECKING(if getaddrinfo seems to work)
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <errno.h>
+#include <netinet/in.h>
+
+#define TEST_PORT "2222"
+
+int
+main(void)
+{
+ int err, sock;
+ struct addrinfo *gai_ai, *ai, hints;
+ char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_PASSIVE;
+
+ err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
+ if (err != 0) {
+ fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
+ exit(1);
+ }
+
+ for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
+ if (ai->ai_family != AF_INET6)
+ continue;
+
+ err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
+ sizeof(ntop), strport, sizeof(strport),
+ NI_NUMERICHOST|NI_NUMERICSERV);
+
+ if (err != 0) {
+ if (err == EAI_SYSTEM)
+ perror("getnameinfo EAI_SYSTEM");
+ else
+ fprintf(stderr, "getnameinfo failed: %s\n",
+ gai_strerror(err));
+ exit(2);
+ }
+
+ sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+ if (sock < 0)
+ perror("socket");
+ if (bind(sock, ai->ai_addr, ai->ai_addrlen) < 0) {
+ if (errno == EBADF)
+ exit(3);
+ }
+ }
+ exit(0);
+}
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ AC_DEFINE(BROKEN_GETADDRINFO)
+ ],
+ [
+ AC_MSG_RESULT(cross-compiling, assuming yes)
+ ]
+ )
+fi
+
+if test "x$ac_cv_func_getaddrinfo" = "xyes" && \
+ test "x$check_for_aix_broken_getaddrinfo" = "x1"; then
+ AC_MSG_CHECKING(if getaddrinfo seems to work)
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <errno.h>
+#include <netinet/in.h>
+
+#define TEST_PORT "2222"
+
+int
+main(void)
+{
+ int err, sock;
+ struct addrinfo *gai_ai, *ai, hints;
+ char ntop[NI_MAXHOST], strport[NI_MAXSERV], *name = NULL;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_PASSIVE;
+
+ err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
+ if (err != 0) {
+ fprintf(stderr, "getaddrinfo failed (%s)", gai_strerror(err));
+ exit(1);
+ }
+
+ for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
+ if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
+ continue;
+
+ err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
+ sizeof(ntop), strport, sizeof(strport),
+ NI_NUMERICHOST|NI_NUMERICSERV);
+
+ if (ai->ai_family == AF_INET && err != 0) {
+ perror("getnameinfo");
+ exit(2);
+ }
+ }
+ exit(0);
+}
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(AIX_GETNAMEINFO_HACK, 1,
+ [Define if you have a getaddrinfo that fails
+ for the all-zeros IPv6 address])
+ ],
+ [
+ AC_MSG_RESULT(no)
+ AC_DEFINE(BROKEN_GETADDRINFO)
+ ],
+ [
+ AC_MSG_RESULT(cross-compiling, assuming no)
+ ]
+ )
+fi
+
+if test "x$check_for_conflicting_getspnam" = "x1"; then
+ AC_MSG_CHECKING(for conflicting getspnam in shadow.h)
+ AC_COMPILE_IFELSE(
+ [
+#include <shadow.h>
+int main(void) {exit(0);}
+ ],
+ [
+ AC_MSG_RESULT(no)
+ ],
+ [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(GETSPNAM_CONFLICTING_DEFS, 1,
+ [Conflicting defs for getspnam])
+ ]
+ )
+fi
+
+AC_FUNC_GETPGRP
+
+# Search for OpenSSL
+saved_CPPFLAGS="$CPPFLAGS"
+saved_LDFLAGS="$LDFLAGS"
+AC_ARG_WITH(ssl-dir,
+ [ --with-ssl-dir=PATH Specify path to OpenSSL installation ],
+ [
+ if test "x$withval" != "xno" ; then
+ case "$withval" in
+ # Relative paths
+ ./*|../*) withval="`pwd`/$withval"
+ esac
+ if test -d "$withval/lib"; then
+ if test -n "${need_dash_r}"; then
+ LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
+ else
+ LDFLAGS="-L${withval}/lib ${LDFLAGS}"
+ fi
+ else
+ if test -n "${need_dash_r}"; then
+ LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
+ else
+ LDFLAGS="-L${withval} ${LDFLAGS}"
+ fi
+ fi
+ if test -d "$withval/include"; then
+ CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
+ else
+ CPPFLAGS="-I${withval} ${CPPFLAGS}"
+ fi
+ fi
+ ]
+)
+LIBS="-lcrypto $LIBS"
+AC_TRY_LINK_FUNC(RAND_add, AC_DEFINE(HAVE_OPENSSL, 1,
+ [Define if your ssl headers are included
+ with #include <openssl/header.h>]),
+ [
+ dnl Check default openssl install dir
+ if test -n "${need_dash_r}"; then
+ LDFLAGS="-L/usr/local/ssl/lib -R/usr/local/ssl/lib ${saved_LDFLAGS}"
+ else
+ LDFLAGS="-L/usr/local/ssl/lib ${saved_LDFLAGS}"
+ fi
+ CPPFLAGS="-I/usr/local/ssl/include ${saved_CPPFLAGS}"
+ AC_TRY_LINK_FUNC(RAND_add, AC_DEFINE(HAVE_OPENSSL),
+ [
+ AC_MSG_ERROR([*** Can't find recent OpenSSL libcrypto (see config.log for details) ***])
+ ]
+ )
+ ]
+)
+
+# Determine OpenSSL header version
+AC_MSG_CHECKING([OpenSSL header version])
+AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+#include <openssl/opensslv.h>
+#define DATA "conftest.sslincver"
+int main(void) {
+ FILE *fd;
+ int rc;
+
+ fd = fopen(DATA,"w");
+ if(fd == NULL)
+ exit(1);
+
+ if ((rc = fprintf(fd ,"%x (%s)\n", OPENSSL_VERSION_NUMBER, OPENSSL_VERSION_TEXT)) <0)
+ exit(1);
+
+ exit(0);
+}
+ ]])],
+ [
+ ssl_header_ver=`cat conftest.sslincver`
+ AC_MSG_RESULT($ssl_header_ver)
+ ],
+ [
+ AC_MSG_RESULT(not found)
+ AC_MSG_ERROR(OpenSSL version header not found.)
+ ],
+ [
+ AC_MSG_WARN([cross compiling: not checking])
+ ]
+)
+
+# Determine OpenSSL library version
+AC_MSG_CHECKING([OpenSSL library version])
+AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <string.h>
+#include <openssl/opensslv.h>
+#include <openssl/crypto.h>
+#define DATA "conftest.ssllibver"
+int main(void) {
+ FILE *fd;
+ int rc;
+
+ fd = fopen(DATA,"w");
+ if(fd == NULL)
+ exit(1);
+
+ if ((rc = fprintf(fd ,"%x (%s)\n", SSLeay(), SSLeay_version(SSLEAY_VERSION))) <0)
+ exit(1);
+
+ exit(0);
+}
+ ]])],
+ [
+ ssl_library_ver=`cat conftest.ssllibver`
+ AC_MSG_RESULT($ssl_library_ver)
+ ],
+ [
+ AC_MSG_RESULT(not found)
+ AC_MSG_ERROR(OpenSSL library not found.)
+ ],
+ [
+ AC_MSG_WARN([cross compiling: not checking])
+ ]
+)
+
+AC_ARG_WITH(openssl-header-check,
+ [ --without-openssl-header-check Disable OpenSSL version consistency check],
+ [ if test "x$withval" = "xno" ; then
+ openssl_check_nonfatal=1
+ fi
+ ]
+)
+
+# Sanity check OpenSSL headers
+AC_MSG_CHECKING([whether OpenSSL's headers match the library])
+AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <string.h>
+#include <openssl/opensslv.h>
+int main(void) { exit(SSLeay() == OPENSSL_VERSION_NUMBER ? 0 : 1); }
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ if test "x$openssl_check_nonfatal" = "x"; then
+ AC_MSG_ERROR([Your OpenSSL headers do not match your
+library. Check config.log for details.
+If you are sure your installation is consistent, you can disable the check
+by running "./configure --without-openssl-header-check".
+Also see contrib/findssl.sh for help identifying header/library mismatches.
+])
+ else
+ AC_MSG_WARN([Your OpenSSL headers do not match your
+library. Check config.log for details.
+Also see contrib/findssl.sh for help identifying header/library mismatches.])
+ fi
+ ],
+ [
+ AC_MSG_WARN([cross compiling: not checking])
+ ]
+)
+
+AC_MSG_CHECKING([if programs using OpenSSL functions will link])
+AC_LINK_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <openssl/evp.h>
+int main(void) { SSLeay_add_all_algorithms(); }
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ saved_LIBS="$LIBS"
+ LIBS="$LIBS -ldl"
+ AC_MSG_CHECKING([if programs using OpenSSL need -ldl])
+ AC_LINK_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <openssl/evp.h>
+int main(void) { SSLeay_add_all_algorithms(); }
+ ]])],
+ [
+ AC_MSG_RESULT(yes)
+ ],
+ [
+ AC_MSG_RESULT(no)
+ LIBS="$saved_LIBS"
+ ]
+ )
+ ]