Initial import

1 files changed, 164 insertions, 0 deletions

diff --git a/src/Socket.cc b/src/Socket.cc
new file mode 100644
index 00000000..292efc51
--- /dev/null
+++ b/src/Socket.cc
@@ -0,0 +1,164 @@
+/* <!-- copyright */
+/*
+ * aria2 - a simple utility for downloading files faster
+ *
+ * Copyright (C) 2006 Tatsuhiro Tsujikawa
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/* copyright --> */
+#include "Socket.h"
+#include <unistd.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/time.h>
+#include <netdb.h>
+#include "DlRetryEx.h"
+#include "DlAbortEx.h"
+#include <errno.h>
+
+Socket::Socket():sockfd(-1) {}
+
+Socket::Socket(const Socket& s) {
+  sockfd = dup(s.sockfd);
+}
+
+Socket::~Socket() {
+  closeConnection();
+}
+
+Socket& Socket::operator=(const Socket& s) {
+  if(this != &s) {
+    closeConnection();
+    sockfd = dup(s.sockfd);
+  }
+  return *this;
+}
+
+void Socket::establishConnection(string host, int port) {
+  sockfd = socket(AF_INET, SOCK_STREAM, 0);
+  if(sockfd >= 0) {
+    socklen_t sockopt = 1;
+    if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &sockopt, sizeof(int)) < 0) {
+      close(sockfd);
+      sockfd = -1;
+      throw new DlAbortEx(strerror(errno));
+    }
+  } else {
+      throw new DlAbortEx(strerror(errno));
+  }
+
+  struct sockaddr_in sockaddr;
+  memset((char*)&sockaddr, 0, sizeof(sockaddr));
+  sockaddr.sin_family = AF_INET;
+  sockaddr.sin_port = htons(port);
+  if(inet_aton(host.c_str(), &sockaddr.sin_addr)) {
+    // ok
+  } else {
+    struct addrinfo ai;
+    ai.ai_flags = 0;
+    ai.ai_family = PF_INET;
+    ai.ai_socktype = SOCK_STREAM;
+    ai.ai_protocol = 0; 
+    ai.ai_addr = (struct sockaddr*)&sockaddr;
+    struct addrinfo* res;
+    int ec;
+    if((ec = getaddrinfo(host.c_str(), NULL, &ai, &res)) != 0) {
+      throw new DlAbortEx(gai_strerror(ec));
+    }
+    sockaddr.sin_addr = ((struct sockaddr_in*)res->ai_addr)->sin_addr;
+    freeaddrinfo(res);
+  }
+  // make socket non-blocking mode
+  int flags = fcntl(sockfd, F_GETFL, 0);
+  fcntl(sockfd, F_SETFL, flags|O_NONBLOCK);
+  if(connect(sockfd, (struct sockaddr*)&sockaddr, (socklen_t)sizeof(sockaddr)) == -1 && errno != EINPROGRESS) {
+    throw new DlAbortEx(strerror(errno));
+  }
+}
+
+void Socket::setNonBlockingMode() {
+  int flags = fcntl(sockfd, F_GETFL, 0);
+  fcntl(sockfd, F_SETFL, flags&~O_NONBLOCK);
+}
+
+void Socket::closeConnection() {
+  if(sockfd != -1) {
+    close(sockfd);
+    sockfd = -1;
+  }
+}
+
+bool Socket::isWritable(int timeout) {
+  fd_set fds;
+  FD_ZERO(&fds);
+  FD_SET(sockfd, &fds);
+
+  struct timeval tv;
+  tv.tv_sec = timeout;
+  tv.tv_usec = 0;
+
+  int r = select(sockfd+1, NULL, &fds, NULL, &tv);
+  if(r == 1) {
+    return true;
+  } else if(r == 0) {
+    // time out
+    return false;
+  } else {
+    throw new DlRetryEx(strerror(errno));
+  }
+}
+
+bool Socket::isReadable(int timeout) {
+  fd_set fds;
+  FD_ZERO(&fds);
+  FD_SET(sockfd, &fds);
+
+  struct timeval tv;
+  tv.tv_sec = timeout;
+  tv.tv_usec = 0;
+
+  int r = select(sockfd+1, &fds, NULL, NULL, &tv);
+  if(r == 1) {
+    return true;
+  } else if(r == 0) {
+    // time out
+    return false;
+  } else {
+    throw new DlRetryEx(strerror(errno));
+  }
+}
+
+void Socket::writeData(const char* data, int len, int timeout) {
+  if(!isWritable(timeout) || send(sockfd, data, (size_t)len, 0) != len) {
+    throw new DlRetryEx(strerror(errno));
+  }
+}
+
+void Socket::readData(char* data, int& len, int timeout) {
+  if(!isReadable(timeout) || (len = recv(sockfd, data, (size_t)len, 0)) < 0) {
+    throw new DlRetryEx(strerror(errno));
+  }
+}
+
+void Socket::peekData(char* data, int& len, int timeout) {
+  if(!isReadable(timeout) || (len = recv(sockfd, data, (size_t)len, MSG_PEEK)) < 0) {
+    throw new DlRetryEx(strerror(errno));
+  }
+}