X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=rnetclient.c;h=de903cdccd15ce39e2d844058c6c0d9e196bf04f;hb=44392364ec17385cef6a720c640a606c29ca9b40;hp=24d542e829c2512ac682c5fa54c34c787431e0fc;hpb=5fb0636280af43f92233a0466474c42ccbf7c370;p=cascardo%2Flibreceita.git

diff --git a/rnetclient.c b/rnetclient.c
index 24d542e..de903cd 100644
--- a/rnetclient.c
+++ b/rnetclient.c
@@ -1,5 +1,5 @@
 /*
- *  Copyright (C) 2012  Thadeu Lima de Souza Cascardo <cascardo@minaslivre.org>
+ *  Copyright (C) 2012-2013  Thadeu Lima de Souza Cascardo <cascardo@minaslivre.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -24,8 +24,10 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <netdb.h>
 #include <gnutls/gnutls.h>
 #include <zlib.h>
+#include "decfile.h"
 
 static void * get_creds(char *certfile)
 {
@@ -111,42 +113,102 @@ static int inflateRecord(char *buffer, size_t len, char **out, size_t *olen)
 	return 0;
 }
 
-int main(int argc, char **argv)
+#define RNET_ADDRESS "receitanet.receita.fazenda.gov.br"
+
+static int connect_rnet(int *c)
 {
+	struct addrinfo *addresses;
+	struct addrinfo *addr;
+	struct addrinfo hint;
 	struct sockaddr_in saddr;
+	int r;
+	int fd = *c = -1;
+	int i;
+	memset(&hint, 0, sizeof(hint));
+	hint.ai_family = AF_UNSPEC;
+	hint.ai_socktype = SOCK_STREAM;
+	hint.ai_protocol = IPPROTO_TCP;
+	hint.ai_flags = AI_ADDRCONFIG;
+	r = getaddrinfo(RNET_ADDRESS, "3456", &hint, &addresses);
+	if (r) {
+		return r;
+	}
+	for (addr = addresses; addr != NULL; addr = addr->ai_next) {
+		fd = socket(addr->ai_family, addr->ai_socktype,
+				addr->ai_protocol);
+		if (fd >= 0)
+			if (!(r = connect(fd, addr->ai_addr,
+						addr->ai_addrlen)))
+				break;
+		close(fd);
+		fd = -1;
+	}
+	freeaddrinfo(addresses);
+	*c = fd;
+	if (fd == -1)
+		return EAI_SYSTEM;
+	return 0;
+}
+
+static int handshake(int c)
+{
+	char buffer[16];
+	int r;
+	buffer[0] = 1;
+	write(c, buffer, 1);
+	write(c, "00000000000000", 14);
+	r = read(c, buffer, 1);
+	if (r != 1 && buffer[0] != 'E')
+		return -1;
+	r = read(c, buffer, 14);
+	if (r != 14)
+		return -1;
+	return 0;
+}
+
+static void usage(void)
+{
+	fprintf(stderr, "rnetclient [filename]\n");
+	exit(1);
+}
+
+int main(int argc, char **argv)
+{
 	int c;
 	int r;
 	char buffer[2048];
 	char *out;
 	size_t olen;
+	struct rnet_decfile *decfile;
 	gnutls_session_t session;
+	
+	if (argc < 2) {
+		usage();
+	}
+
+	decfile = rnet_decfile_open(argv[1]);
+	if (!decfile) {
+		fprintf(stderr, "could not parse %s: %s\n", argv[1], strerror(errno));
+		exit(1);
+	}
+
 	gnutls_global_init();
+
 	session_new(&session);
-	c = socket(PF_INET, SOCK_STREAM, 0);
-	saddr.sin_family = AF_INET;
-	saddr.sin_port = htons(3456);
-	saddr.sin_addr.s_addr = inet_addr("161.148.185.11");
-	r = connect(c, (struct sockaddr *) &saddr, sizeof(saddr));
-	if (r < 0) {
+	r = connect_rnet(&c);
+	if (r) {
 		fprintf(stderr, "error connecting to server: %s\n",
-			strerror(errno));
+			r == EAI_SYSTEM ? strerror(errno) : gai_strerror(r));
 		exit(1);
 	}
 	gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) c);
-	buffer[0] = 1;
-	write(c, buffer, 1);
-	write(c, "00000000000000", 14);
-	r = read(c, buffer, 1);
-	if (r != 1 && buffer[0] != 'E')
-		exit(1);
-	r = read(c, buffer, 14);
-	if (r != 14)
+	r = handshake(c);
+	if (r < 0) {
 		exit(1);
+	}
 	if ((r = gnutls_handshake(session)) < 0)
 		fprintf(stderr, "error in handshake: %s\n",
 				gnutls_strerror(r));
-	else
-		fprintf(stderr, "handshake ok\n");
 	r = read(0, buffer, sizeof(buffer));
 	deflateRecord(buffer, r, &out, &olen);
 	gnutls_record_send(session, out, olen);
@@ -154,6 +216,10 @@ int main(int argc, char **argv)
 	while ((r = gnutls_record_recv(session, buffer, sizeof(buffer))) > 0)
 		write(1, buffer, r);
 	close(c);
+
+	rnet_decfile_close(decfile);
+
 	gnutls_global_deinit();
+
 	return 0;
 }