New option "-crlf" to s_client and s_server which tells them to convert

LFs into CRLFs when forwarding data from stdin to the TLS connection.
This is necessary for properly talking HTTP.
Because of the code freeze this change is by default disabled for now;
without -DAPPS_CRLF, the code is exactly as before.

apps/s_client.c

@@ -56,6 +56,9 @@
  * [including the GNU Public Licence.]
  */
 
+#ifdef APPS_CRLF
+# include <assert.h>
+#endif
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -138,6 +141,9 @@ static void sc_usage(void)
 	BIO_printf(bio_err," -state        - print the 'ssl' states\n");
 #ifdef FIONBIO
 	BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
+#endif
+#ifdef APPS_CRLF
+	BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
 #endif
 	BIO_printf(bio_err," -quiet        - no s_client output\n");
 	BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
@@ -165,6 +171,9 @@ int MAIN(int argc, char **argv)
 	char *cert_file=NULL,*key_file=NULL;
 	char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
 	int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
+#ifdef APPS_CRLF
+	int crlf=0;
+#endif
 	int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
 	SSL_CTX *ctx=NULL;
 	int ret=1,in_init=1,i,nbio_test=0;
@@ -235,6 +244,10 @@ int MAIN(int argc, char **argv)
 			if (--argc < 1) goto bad;
 			cert_file= *(++argv);
 			}
+#ifdef APPS_CRLF
+		else if	(strcmp(*argv,"-crlf") == 0)
+			crlf=1;
+#endif
 		else if	(strcmp(*argv,"-quiet") == 0)
 			c_quiet=1;
 		else if	(strcmp(*argv,"-pause") == 0)
@@ -634,7 +647,32 @@ printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240
 #ifndef WINDOWS
 		else if (FD_ISSET(fileno(stdin),&readfds))
 			{
-			i=read(fileno(stdin),cbuf,BUFSIZZ);
+#ifdef APPS_CRLF
+			if (crlf)
+				{
+				int j, lf_num;
+
+				i=read(fileno(stdin),cbuf,BUFSIZZ/2);
+				lf_num = 0;
+				/* both loops are skipped when i <= 0 */
+				for (j = 0; j < i; j++)
+					if (cbuf[j] == '\n')
+						lf_num++;
+				for (j = i-1; j >= 0; j--)
+					{
+					cbuf[j+lf_num] = cbuf[j];
+					if (cbuf[j] == '\n')
+						{
+						lf_num--;
+						i++;
+						cbuf[j+lf_num] = '\r';
+						}
+					}
+				assert(lf_num == 0);
+				}
+			else
+#endif
+				i=read(fileno(stdin),cbuf,BUFSIZZ);
 
 			if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
 				{

apps/s_server.c

@@ -56,6 +56,9 @@
  * [including the GNU Public Licence.]
  */
 
+#ifdef APPS_CRLF
+# include <assert.h>
+#endif
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -166,6 +169,9 @@ static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 static int s_nbio=0;
 #endif
 static int s_nbio_test=0;
+#ifdef APPS_CRLF
+	int s_crlf=0;
+#endif
 static SSL_CTX *ctx=NULL;
 static int www=0;
 
@@ -213,6 +219,9 @@ static void sv_usage(void)
 	BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 #endif
 	BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
+#ifdef APPS_CRLF
+	BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
+#endif
 	BIO_printf(bio_err," -debug        - Print more output\n");
 	BIO_printf(bio_err," -state        - Print the SSL states\n");
 	BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
@@ -516,6 +525,10 @@ int MAIN(int argc, char *argv[])
 			{ hack=1; }
 		else if	(strcmp(*argv,"-state") == 0)
 			{ state=1; }
+#ifdef APPS_CRLF
+		else if	(strcmp(*argv,"-crlf") == 0)
+			{ s_crlf=1; }
+#endif
 		else if	(strcmp(*argv,"-quiet") == 0)
 			{ s_quiet=1; }
 		else if	(strcmp(*argv,"-bugs") == 0)
@@ -800,7 +813,32 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 		if (i <= 0) continue;
 		if (FD_ISSET(fileno(stdin),&readfds))
 			{
-			i=read(fileno(stdin),buf,bufsize);
+#ifdef APPS_CRLF
+			if (s_crlf)
+				{
+				int j, lf_num;
+
+				i=read(fileno(stdin), buf, bufsize/2);
+				lf_num = 0;
+				/* both loops are skipped when i <= 0 */
+				for (j = 0; j < i; j++)
+					if (buf[j] == '\n')
+						lf_num++;
+				for (j = i-1; j >= 0; j--)
+					{
+					buf[j+lf_num] = buf[j];
+					if (buf[j] == '\n')
+						{
+						lf_num--;
+						i++;
+						buf[j+lf_num] = '\r';
+						}
+					}
+				assert(lf_num == 0);
+				}
+			else
+#endif
+				i=read(fileno(stdin),buf,bufsize);
 			if (!s_quiet)
 				{
 				if ((i <= 0) || (buf[0] == 'Q'))