added basic structure

1 files changed, 132 insertions, 0 deletions

diff --git a/libfetch/common.h b/libfetch/common.h
new file mode 100644
index 0000000..241dbbf
--- /dev/null
+++ b/libfetch/common.h
@@ -0,0 +1,132 @@
+/*-
+ * Copyright (c) 1998-2011 Dag-Erling Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _COMMON_H_INCLUDED
+#define _COMMON_H_INCLUDED
+
+#define FTP_DEFAULT_PORT	21
+#define HTTP_DEFAULT_PORT	80
+#define FTP_DEFAULT_PROXY_PORT	21
+#define HTTP_DEFAULT_PROXY_PORT	3128
+
+#ifdef WITH_SSL
+#include <openssl/crypto.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#endif
+
+/* Connection */
+typedef struct fetchconn conn_t;
+struct fetchconn {
+	int		 sd;		/* socket descriptor */
+	char		*buf;		/* buffer */
+	size_t		 bufsize;	/* buffer size */
+	size_t		 buflen;	/* length of buffer contents */
+	int		 err;		/* last protocol reply code */
+	struct {			/* data cached after an interrupted
+					   read */
+		char	*buf;
+		size_t	 size;
+		size_t	 pos;
+		size_t	 len;
+	} cache;
+#ifdef WITH_SSL
+	SSL		*ssl;		/* SSL handle */
+	SSL_CTX		*ssl_ctx;	/* SSL context */
+	X509		*ssl_cert;	/* server certificate */
+	SSL_METHOD	*ssl_meth;	/* SSL method */
+#endif
+	int		 ref;		/* reference count */
+};
+
+/* Structure used for error message lists */
+struct fetcherr {
+	const int	 num;
+	const int	 cat;
+	const char	*string;
+};
+
+/* for fetch_writev */
+struct iovec;
+
+void		 fetch_seterr(struct fetcherr *, int);
+void		 fetch_syserr(void);
+void		 fetch_info(const char *, ...);
+int		 fetch_default_port(const char *);
+int		 fetch_default_proxy_port(const char *);
+int		 fetch_bind(int, int, const char *);
+conn_t		*fetch_connect(const char *, int, int, int);
+conn_t		*fetch_reopen(int);
+conn_t		*fetch_ref(conn_t *);
+int		 fetch_ssl(conn_t *, int);
+ssize_t		 fetch_read(conn_t *, char *, size_t);
+int		 fetch_getln(conn_t *);
+ssize_t		 fetch_write(conn_t *, const char *, size_t);
+ssize_t		 fetch_writev(conn_t *, struct iovec *, int);
+int		 fetch_putln(conn_t *, const char *, size_t);
+int		 fetch_close(conn_t *);
+int		 fetch_add_entry(struct url_ent **, int *, int *,
+		     const char *, struct url_stat *);
+int		 fetch_netrc_auth(struct url *url);
+int		 fetch_no_proxy_match(const char *);
+
+#define ftp_seterr(n)	 fetch_seterr(ftp_errlist, n)
+#define http_seterr(n)	 fetch_seterr(http_errlist, n)
+#define netdb_seterr(n)	 fetch_seterr(netdb_errlist, n)
+#define url_seterr(n)	 fetch_seterr(url_errlist, n)
+
+#ifndef NDEBUG
+#define DEBUG(x) do { if (fetchDebug) { x; } } while (0)
+#else
+#define DEBUG(x) do { } while (0)
+#endif
+
+/*
+ * I don't really like exporting http_request() and ftp_request(),
+ * but the HTTP and FTP code occasionally needs to cross-call
+ * eachother, and this saves me from adding a lot of special-case code
+ * to handle those cases.
+ *
+ * Note that _*_request() free purl, which is way ugly but saves us a
+ * whole lot of trouble.
+ */
+FILE		*http_request(struct url *, const char *,
+		     struct url_stat *, struct url *, const char *);
+FILE		*ftp_request(struct url *, const char *,
+		     struct url_stat *, struct url *, const char *);
+
+/*
+ * Check whether a particular flag is set
+ */
+#define CHECK_FLAG(x)	(flags && strchr(flags, (x)))
+
+#endif