1 /*- 2 * Copyright (c) 1998-2011 Dag-Erling Smørgrav 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _COMMON_H_INCLUDED 32 #define _COMMON_H_INCLUDED 33 34 #define FTP_DEFAULT_PORT 21 35 #define HTTP_DEFAULT_PORT 80 36 #define FTP_DEFAULT_PROXY_PORT 21 37 #define HTTP_DEFAULT_PROXY_PORT 3128 38 39 #ifdef WITH_SSL 40 #include <openssl/crypto.h> 41 #include <openssl/x509.h> 42 #include <openssl/pem.h> 43 #include <openssl/ssl.h> 44 #include <openssl/err.h> 45 #endif 46 47 /* Connection */ 48 typedef struct fetchconn conn_t; 49 struct fetchconn { 50 int sd; /* socket descriptor */ 51 char *buf; /* buffer */ 52 size_t bufsize; /* buffer size */ 53 size_t buflen; /* length of buffer contents */ 54 int err; /* last protocol reply code */ 55 struct { /* data cached after an interrupted 56 read */ 57 char *buf; 58 size_t size; 59 size_t pos; 60 size_t len; 61 } cache; 62 #ifdef WITH_SSL 63 SSL *ssl; /* SSL handle */ 64 SSL_CTX *ssl_ctx; /* SSL context */ 65 X509 *ssl_cert; /* server certificate */ 66 const SSL_METHOD *ssl_meth; /* SSL method */ 67 #endif 68 int ref; /* reference count */ 69 }; 70 71 /* Structure used for error message lists */ 72 struct fetcherr { 73 const int num; 74 const int cat; 75 const char *string; 76 }; 77 78 /* for fetch_writev */ 79 struct iovec; 80 81 void fetch_seterr(struct fetcherr *, int); 82 void fetch_syserr(void); 83 void fetch_info(const char *, ...); 84 int fetch_default_port(const char *); 85 int fetch_default_proxy_port(const char *); 86 int fetch_bind(int, int, const char *); 87 conn_t *fetch_connect(const char *, int, int, int); 88 conn_t *fetch_reopen(int); 89 conn_t *fetch_ref(conn_t *); 90 int fetch_ssl(conn_t *, int); 91 ssize_t fetch_read(conn_t *, char *, size_t); 92 int fetch_getln(conn_t *); 93 ssize_t fetch_write(conn_t *, const char *, size_t); 94 ssize_t fetch_writev(conn_t *, struct iovec *, int); 95 int fetch_putln(conn_t *, const char *, size_t); 96 int fetch_close(conn_t *); 97 int fetch_add_entry(struct url_ent **, int *, int *, 98 const char *, struct url_stat *); 99 int fetch_netrc_auth(struct url *url); 100 int fetch_no_proxy_match(const char *); 101 102 #define ftp_seterr(n) fetch_seterr(ftp_errlist, n) 103 #define http_seterr(n) fetch_seterr(http_errlist, n) 104 #define netdb_seterr(n) fetch_seterr(netdb_errlist, n) 105 #define url_seterr(n) fetch_seterr(url_errlist, n) 106 107 #ifndef NDEBUG 108 #define DEBUG(x) do { if (fetchDebug) { x; } } while (0) 109 #else 110 #define DEBUG(x) do { } while (0) 111 #endif 112 113 /* 114 * I don't really like exporting http_request() and ftp_request(), 115 * but the HTTP and FTP code occasionally needs to cross-call 116 * eachother, and this saves me from adding a lot of special-case code 117 * to handle those cases. 118 * 119 * Note that _*_request() free purl, which is way ugly but saves us a 120 * whole lot of trouble. 121 */ 122 FILE *http_request(struct url *, const char *, 123 struct url_stat *, struct url *, const char *); 124 FILE *ftp_request(struct url *, const char *, 125 struct url_stat *, struct url *, const char *); 126 127 /* 128 * Check whether a particular flag is set 129 */ 130 #define CHECK_FLAG(x) (flags && strchr(flags, (x))) 131 132 #endif 133