fix various compilation errors

Include gmid.h as first header in every file, as it then includes
config.h (that defines _GNU_SOURCE for instance).

Fix also a warning about unsigned vs signed const char pointers in
openssl.

configure

@@ -296,8 +296,6 @@ cat <<__HEREDOC__
 
 __HEREDOC__
 
-[ ${HAVE_VASPRINTF} -eq 0 ] && echo "#include <stdarg.h>"
-
 [ ${HAVE_EXPLICIT_BZERO} -eq 0 -o \
   ${HAVE_RECALLOCARRAY} -eq 0 -o \
   ${HAVE_STRLCAT} -eq 0 -o \

ex.c

@@ -14,6 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <err.h>
 #include <errno.h>
 
@@ -24,8 +26,6 @@
 #include <stdarg.h>
 #include <string.h>
 
-#include "gmid.h"
-
 int
 send_string(int fd, const char *str)
 {

gg.c

@@ -14,10 +14,10 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <string.h>
-
 #include "gmid.h"
 
+#include <string.h>
+
 int flag2, flag3, bflag, cflag, hflag, Nflag, Vflag, vflag;
 const char *cert, *key;
 

gmid.c

@@ -14,6 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <sys/stat.h>
 
 #include <errno.h>
@@ -23,8 +25,6 @@
 #include <signal.h>
 #include <string.h>
 
-#include "gmid.h"
-
 volatile sig_atomic_t hupped;
 
 struct vhost hosts[HOSTSLEN];

gmid.h

@@ -17,6 +17,8 @@
 #ifndef GMID_H
 #define GMID_H
 
+#include "config.h"
+
 #include <sys/socket.h>
 #include <sys/types.h>
 
@@ -33,8 +35,6 @@
 
 #include <openssl/x509.h>
 
-#include "config.h"
-
 #define GEMINI_URL_LEN (1024+3)	/* URL max len + \r\n + \0 */
 
 #define SUCCESS		20

iri.c

@@ -14,11 +14,11 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <ctype.h>
 #include <string.h>
 
-#include "gmid.h"
-
 static inline int
 unreserved(int p)
 {

log.c

@@ -14,6 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <errno.h>
 #include <netdb.h>
 #include <stdarg.h>
@@ -21,8 +23,6 @@
 #include <string.h>
 #include <syslog.h>
 
-#include "gmid.h"
-
 void
 fatal(const char *fmt, ...)
 {

mime.c

@@ -14,12 +14,12 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include "gmid.h"
-
 void
 init_mime(struct mime *mime)
 {

puny.c

@@ -14,12 +14,12 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 
-#include "gmid.h"
-
 #define BASE	36
 #define TMIN	1
 #define TMAX	26

server.c

@@ -14,6 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <sys/stat.h>
 
 #include <netdb.h>
@@ -26,8 +28,6 @@
 #include <limits.h>
 #include <string.h>
 
-#include "gmid.h"
-
 struct server {
 	struct client	 clients[MAX_USERS];
 	struct tls	*ctx;

utf8.c

@@ -21,11 +21,11 @@
  * SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <stddef.h>
 #include <stdint.h>
 
-#include "gmid.h"
-
 #define UTF8_ACCEPT 0
 #define UTF8_REJECT 1
 

utils.c

@@ -14,6 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "gmid.h"
+
 #include <errno.h>
 #include <string.h>
 
@@ -22,8 +24,6 @@
 #include <openssl/x509_vfy.h>
 #include <openssl/x509v3.h>
 
-#include "gmid.h"
-
 static sigset_t set;
 
 void
@@ -115,7 +115,7 @@ xstrdup(const char *s)
 }
 
 void
-gen_certificate(const char *host, const char *certpath, const char *keypath)
+gen_certificate(const char *hostname, const char *certpath, const char *keypath)
 {
 	BIGNUM		*e;
 	EVP_PKEY	*pkey;
@@ -123,7 +123,8 @@ gen_certificate(const char *host, const char *certpath, const char *keypath)
 	X509		*x509;
 	X509_NAME	*name;
 	FILE		*f;
-	const char	*org = "gmid";
+	const unsigned char *org = (const unsigned char*)"gmid";
+	const unsigned char *host = (const unsigned char*)hostname;
 
 	log_notice(NULL,
 	    "generating new certificate for %s (it could take a while)",