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955 lines
22 KiB
955 lines
22 KiB
/*
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* HTTP address list routines for CUPS.
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*
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* Copyright 2007-2018 by Apple Inc.
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* Copyright 1997-2007 by Easy Software Products, all rights reserved.
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*
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* Licensed under Apache License v2.0. See the file "LICENSE" for more
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* information.
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*/
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/*
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* Include necessary headers...
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*/
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#include "cups-private.h"
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#include "debug-internal.h"
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#ifdef HAVE_RESOLV_H
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# include <resolv.h>
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#endif /* HAVE_RESOLV_H */
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#ifdef HAVE_POLL
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# include <poll.h>
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#endif /* HAVE_POLL */
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#ifndef _WIN32
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# include <fcntl.h>
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#endif /* _WIN32 */
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/*
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* 'httpAddrConnect()' - Connect to any of the addresses in the list.
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*
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* @since CUPS 1.2/macOS 10.5@ @exclude all@
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*/
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http_addrlist_t * /* O - Connected address or NULL on failure */
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httpAddrConnect(
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http_addrlist_t *addrlist, /* I - List of potential addresses */
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int *sock) /* O - Socket */
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{
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DEBUG_printf(("httpAddrConnect(addrlist=%p, sock=%p)", (void *)addrlist, (void *)sock));
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return (httpAddrConnect2(addrlist, sock, 30000, NULL));
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}
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/*
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* 'httpAddrConnect2()' - Connect to any of the addresses in the list with a
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* timeout and optional cancel.
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*
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* @since CUPS 1.7/macOS 10.9@
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*/
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http_addrlist_t * /* O - Connected address or NULL on failure */
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httpAddrConnect2(
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http_addrlist_t *addrlist, /* I - List of potential addresses */
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int *sock, /* O - Socket */
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int msec, /* I - Timeout in milliseconds */
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int *cancel) /* I - Pointer to "cancel" variable */
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{
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int val; /* Socket option value */
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#ifndef _WIN32
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int i, j, /* Looping vars */
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flags, /* Socket flags */
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result; /* Result from select() or poll() */
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#endif /* !_WIN32 */
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int remaining; /* Remaining timeout */
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int nfds, /* Number of file descriptors */
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fds[100]; /* Socket file descriptors */
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http_addrlist_t *addrs[100]; /* Addresses */
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#ifndef HAVE_POLL
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int max_fd = -1; /* Highest file descriptor */
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#endif /* !HAVE_POLL */
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#ifdef O_NONBLOCK
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# ifdef HAVE_POLL
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struct pollfd pfds[100]; /* Polled file descriptors */
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# else
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fd_set input_set, /* select() input set */
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output_set, /* select() output set */
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error_set; /* select() error set */
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struct timeval timeout; /* Timeout */
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# endif /* HAVE_POLL */
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#endif /* O_NONBLOCK */
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#ifdef DEBUG
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# ifndef _WIN32
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socklen_t len; /* Length of value */
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http_addr_t peer; /* Peer address */
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# endif /* !_WIN32 */
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char temp[256]; /* Temporary address string */
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#endif /* DEBUG */
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DEBUG_printf(("httpAddrConnect2(addrlist=%p, sock=%p, msec=%d, cancel=%p)", (void *)addrlist, (void *)sock, msec, (void *)cancel));
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if (!sock)
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{
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errno = EINVAL;
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_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0);
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return (NULL);
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}
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if (cancel && *cancel)
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return (NULL);
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if (msec <= 0)
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msec = INT_MAX;
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/*
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* Loop through each address until we connect or run out of addresses...
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*/
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nfds = 0;
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remaining = msec;
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while (remaining > 0)
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{
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if (cancel && *cancel)
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{
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while (nfds > 0)
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{
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nfds --;
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httpAddrClose(NULL, fds[nfds]);
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}
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return (NULL);
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}
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if (addrlist && nfds < (int)(sizeof(fds) / sizeof(fds[0])))
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{
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/*
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* Create the socket...
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*/
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DEBUG_printf(("2httpAddrConnect2: Trying %s:%d...", httpAddrString(&(addrlist->addr), temp, sizeof(temp)), httpAddrPort(&(addrlist->addr))));
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if ((fds[nfds] = (int)socket(httpAddrFamily(&(addrlist->addr)), SOCK_STREAM, 0)) < 0)
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{
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/*
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* Don't abort yet, as this could just be an issue with the local
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* system not being configured with IPv4/IPv6/domain socket enabled.
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*
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* Just skip this address...
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*/
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addrlist = addrlist->next;
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continue;
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}
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/*
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* Set options...
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*/
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val = 1;
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setsockopt(fds[nfds], SOL_SOCKET, SO_REUSEADDR, CUPS_SOCAST &val, sizeof(val));
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#ifdef SO_REUSEPORT
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val = 1;
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setsockopt(fds[nfds], SOL_SOCKET, SO_REUSEPORT, CUPS_SOCAST &val, sizeof(val));
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#endif /* SO_REUSEPORT */
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#ifdef SO_NOSIGPIPE
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val = 1;
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setsockopt(fds[nfds], SOL_SOCKET, SO_NOSIGPIPE, CUPS_SOCAST &val, sizeof(val));
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#endif /* SO_NOSIGPIPE */
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/*
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* Using TCP_NODELAY improves responsiveness, especially on systems
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* with a slow loopback interface...
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*/
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val = 1;
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setsockopt(fds[nfds], IPPROTO_TCP, TCP_NODELAY, CUPS_SOCAST &val, sizeof(val));
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#ifdef FD_CLOEXEC
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/*
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* Close this socket when starting another process...
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*/
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fcntl(fds[nfds], F_SETFD, FD_CLOEXEC);
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#endif /* FD_CLOEXEC */
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#ifdef O_NONBLOCK
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/*
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* Do an asynchronous connect by setting the socket non-blocking...
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*/
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DEBUG_printf(("httpAddrConnect2: Setting non-blocking connect()"));
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flags = fcntl(fds[nfds], F_GETFL, 0);
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fcntl(fds[nfds], F_SETFL, flags | O_NONBLOCK);
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#endif /* O_NONBLOCK */
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/*
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* Then connect...
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*/
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if (!connect(fds[nfds], &(addrlist->addr.addr), (socklen_t)httpAddrLength(&(addrlist->addr))))
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{
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DEBUG_printf(("1httpAddrConnect2: Connected to %s:%d...", httpAddrString(&(addrlist->addr), temp, sizeof(temp)), httpAddrPort(&(addrlist->addr))));
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#ifdef O_NONBLOCK
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fcntl(fds[nfds], F_SETFL, flags);
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#endif /* O_NONBLOCK */
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*sock = fds[nfds];
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while (nfds > 0)
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{
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nfds --;
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httpAddrClose(NULL, fds[nfds]);
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}
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return (addrlist);
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}
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#ifdef _WIN32
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if (WSAGetLastError() != WSAEINPROGRESS && WSAGetLastError() != WSAEWOULDBLOCK)
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#else
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if (errno != EINPROGRESS && errno != EWOULDBLOCK)
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#endif /* _WIN32 */
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{
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DEBUG_printf(("1httpAddrConnect2: Unable to connect to %s:%d: %s", httpAddrString(&(addrlist->addr), temp, sizeof(temp)), httpAddrPort(&(addrlist->addr)), strerror(errno)));
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httpAddrClose(NULL, fds[nfds]);
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addrlist = addrlist->next;
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continue;
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}
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#ifndef _WIN32
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fcntl(fds[nfds], F_SETFL, flags);
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#endif /* !_WIN32 */
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#ifndef HAVE_POLL
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if (fds[nfds] > max_fd)
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max_fd = fds[nfds];
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#endif /* !HAVE_POLL */
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addrs[nfds] = addrlist;
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nfds ++;
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addrlist = addrlist->next;
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}
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if (!addrlist && nfds == 0)
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break;
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/*
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* See if we can connect to any of the addresses so far...
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*/
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#ifdef O_NONBLOCK
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DEBUG_puts("1httpAddrConnect2: Finishing async connect()");
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do
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{
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if (cancel && *cancel)
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{
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/*
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* Close this socket and return...
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*/
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DEBUG_puts("1httpAddrConnect2: Canceled connect()");
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while (nfds > 0)
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{
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nfds --;
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httpAddrClose(NULL, fds[nfds]);
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}
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*sock = -1;
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return (NULL);
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}
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# ifdef HAVE_POLL
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for (i = 0; i < nfds; i ++)
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{
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pfds[i].fd = fds[i];
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pfds[i].events = POLLIN | POLLOUT;
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}
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result = poll(pfds, (nfds_t)nfds, addrlist ? 100 : remaining > 250 ? 250 : remaining);
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DEBUG_printf(("1httpAddrConnect2: poll() returned %d (%d)", result, errno));
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# else
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FD_ZERO(&input_set);
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for (i = 0; i < nfds; i ++)
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FD_SET(fds[i], &input_set);
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output_set = input_set;
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error_set = input_set;
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timeout.tv_sec = 0;
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timeout.tv_usec = (addrlist ? 100 : remaining > 250 ? 250 : remaining) * 1000;
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result = select(max_fd + 1, &input_set, &output_set, &error_set, &timeout);
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DEBUG_printf(("1httpAddrConnect2: select() returned %d (%d)", result, errno));
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# endif /* HAVE_POLL */
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}
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# ifdef _WIN32
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while (result < 0 && (WSAGetLastError() == WSAEINTR || WSAGetLastError() == WSAEWOULDBLOCK));
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# else
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while (result < 0 && (errno == EINTR || errno == EAGAIN));
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# endif /* _WIN32 */
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if (result > 0)
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{
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http_addrlist_t *connaddr = NULL; /* Connected address, if any */
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for (i = 0; i < nfds; i ++)
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{
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# ifdef HAVE_POLL
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DEBUG_printf(("pfds[%d].revents=%x\n", i, pfds[i].revents));
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if (pfds[i].revents && !(pfds[i].revents & (POLLERR | POLLHUP)))
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# else
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if (FD_ISSET(fds[i], &input_set) && !FD_ISSET(fds[i], &error_set))
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# endif /* HAVE_POLL */
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{
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*sock = fds[i];
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connaddr = addrs[i];
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# ifdef DEBUG
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len = sizeof(peer);
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if (!getpeername(fds[i], (struct sockaddr *)&peer, &len))
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DEBUG_printf(("1httpAddrConnect2: Connected to %s:%d...", httpAddrString(&peer, temp, sizeof(temp)), httpAddrPort(&peer)));
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# endif /* DEBUG */
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break;
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}
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# ifdef HAVE_POLL
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else if (pfds[i].revents & (POLLERR | POLLHUP))
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# else
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else if (FD_ISSET(fds[i], &error_set))
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# endif /* HAVE_POLL */
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{
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/*
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* Error on socket, remove from the "pool"...
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*/
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httpAddrClose(NULL, fds[i]);
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nfds --;
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if (i < nfds)
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{
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memmove(fds + i, fds + i + 1, (size_t)(nfds - i) * (sizeof(fds[0])));
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memmove(addrs + i, addrs + i + 1, (size_t)(nfds - i) * (sizeof(addrs[0])));
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}
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i --;
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}
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}
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if (connaddr)
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{
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/*
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* Connected on one address, close all of the other sockets we have so
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* far and return...
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*/
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for (j = 0; j < i; j ++)
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httpAddrClose(NULL, fds[j]);
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for (j ++; j < nfds; j ++)
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httpAddrClose(NULL, fds[j]);
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return (connaddr);
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}
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}
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#endif /* O_NONBLOCK */
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if (addrlist)
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remaining -= 100;
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else
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remaining -= 250;
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}
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while (nfds > 0)
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{
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nfds --;
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httpAddrClose(NULL, fds[nfds]);
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}
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#ifdef _WIN32
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_cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, "Connection failed", 0);
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#else
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_cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, strerror(errno), 0);
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#endif /* _WIN32 */
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return (NULL);
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}
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/*
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* 'httpAddrCopyList()' - Copy an address list.
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*
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* @since CUPS 1.7/macOS 10.9@
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*/
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http_addrlist_t * /* O - New address list or @code NULL@ on error */
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httpAddrCopyList(
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http_addrlist_t *src) /* I - Source address list */
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{
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http_addrlist_t *dst = NULL, /* First list entry */
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*prev = NULL, /* Previous list entry */
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*current = NULL;/* Current list entry */
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while (src)
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{
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if ((current = malloc(sizeof(http_addrlist_t))) == NULL)
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{
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current = dst;
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while (current)
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{
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prev = current;
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current = current->next;
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free(prev);
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}
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return (NULL);
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}
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memcpy(current, src, sizeof(http_addrlist_t));
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current->next = NULL;
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if (prev)
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prev->next = current;
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else
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dst = current;
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prev = current;
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src = src->next;
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}
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return (dst);
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}
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/*
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* 'httpAddrFreeList()' - Free an address list.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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void
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httpAddrFreeList(
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http_addrlist_t *addrlist) /* I - Address list to free */
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{
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http_addrlist_t *next; /* Next address in list */
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/*
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* Free each address in the list...
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*/
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while (addrlist)
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{
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next = addrlist->next;
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free(addrlist);
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addrlist = next;
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}
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}
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/*
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* 'httpAddrGetList()' - Get a list of addresses for a hostname.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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http_addrlist_t * /* O - List of addresses or NULL */
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httpAddrGetList(const char *hostname, /* I - Hostname, IP address, or NULL for passive listen address */
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int family, /* I - Address family or AF_UNSPEC */
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const char *service) /* I - Service name or port number */
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{
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http_addrlist_t *first, /* First address in list */
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*addr, /* Current address in list */
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*temp; /* New address */
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_cups_globals_t *cg = _cupsGlobals();
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/* Global data */
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#ifdef DEBUG
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_cups_debug_printf("httpAddrGetList(hostname=\"%s\", family=AF_%s, "
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"service=\"%s\")\n",
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hostname ? hostname : "(nil)",
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family == AF_UNSPEC ? "UNSPEC" :
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# ifdef AF_LOCAL
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family == AF_LOCAL ? "LOCAL" :
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# endif /* AF_LOCAL */
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# ifdef AF_INET6
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family == AF_INET6 ? "INET6" :
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# endif /* AF_INET6 */
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family == AF_INET ? "INET" : "???", service);
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#endif /* DEBUG */
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#ifdef HAVE_RES_INIT
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/*
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* STR #2920: Initialize resolver after failure in cups-polld
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*
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* If the previous lookup failed, re-initialize the resolver to prevent
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* temporary network errors from persisting. This *should* be handled by
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* the resolver libraries, but apparently the glibc folks do not agree.
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*
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* We set a flag at the end of this function if we encounter an error that
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* requires reinitialization of the resolver functions. We then call
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* res_init() if the flag is set on the next call here or in httpAddrLookup().
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*/
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if (cg->need_res_init)
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{
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res_init();
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cg->need_res_init = 0;
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}
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#endif /* HAVE_RES_INIT */
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/*
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* Lookup the address the best way we can...
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*/
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first = addr = NULL;
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#ifdef AF_LOCAL
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if (hostname && hostname[0] == '/')
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{
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/*
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* Domain socket address...
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*/
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if ((first = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t))) != NULL)
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{
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addr = first;
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first->addr.un.sun_family = AF_LOCAL;
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strlcpy(first->addr.un.sun_path, hostname, sizeof(first->addr.un.sun_path));
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}
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}
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else
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#endif /* AF_LOCAL */
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if (!hostname || _cups_strcasecmp(hostname, "localhost"))
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{
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#ifdef HAVE_GETADDRINFO
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struct addrinfo hints, /* Address lookup hints */
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*results, /* Address lookup results */
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*current; /* Current result */
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char ipv6[64], /* IPv6 address */
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*ipv6zone; /* Pointer to zone separator */
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int ipv6len; /* Length of IPv6 address */
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int error; /* getaddrinfo() error */
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/*
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* Lookup the address as needed...
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*/
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = family;
|
|
hints.ai_flags = hostname ? 0 : AI_PASSIVE;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
|
|
if (hostname && *hostname == '[')
|
|
{
|
|
/*
|
|
* Remove brackets from numeric IPv6 address...
|
|
*/
|
|
|
|
if (!strncmp(hostname, "[v1.", 4))
|
|
{
|
|
/*
|
|
* Copy the newer address format which supports link-local addresses...
|
|
*/
|
|
|
|
strlcpy(ipv6, hostname + 4, sizeof(ipv6));
|
|
if ((ipv6len = (int)strlen(ipv6) - 1) >= 0 && ipv6[ipv6len] == ']')
|
|
{
|
|
ipv6[ipv6len] = '\0';
|
|
hostname = ipv6;
|
|
|
|
/*
|
|
* Convert "+zone" in address to "%zone"...
|
|
*/
|
|
|
|
if ((ipv6zone = strrchr(ipv6, '+')) != NULL)
|
|
*ipv6zone = '%';
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Copy the regular non-link-local IPv6 address...
|
|
*/
|
|
|
|
strlcpy(ipv6, hostname + 1, sizeof(ipv6));
|
|
if ((ipv6len = (int)strlen(ipv6) - 1) >= 0 && ipv6[ipv6len] == ']')
|
|
{
|
|
ipv6[ipv6len] = '\0';
|
|
hostname = ipv6;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((error = getaddrinfo(hostname, service, &hints, &results)) == 0)
|
|
{
|
|
/*
|
|
* Copy the results to our own address list structure...
|
|
*/
|
|
|
|
for (current = results; current; current = current->ai_next)
|
|
if (current->ai_family == AF_INET || current->ai_family == AF_INET6)
|
|
{
|
|
/*
|
|
* Copy the address over...
|
|
*/
|
|
|
|
temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t));
|
|
if (!temp)
|
|
{
|
|
httpAddrFreeList(first);
|
|
freeaddrinfo(results);
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0);
|
|
return (NULL);
|
|
}
|
|
|
|
if (current->ai_family == AF_INET6)
|
|
memcpy(&(temp->addr.ipv6), current->ai_addr,
|
|
sizeof(temp->addr.ipv6));
|
|
else
|
|
memcpy(&(temp->addr.ipv4), current->ai_addr,
|
|
sizeof(temp->addr.ipv4));
|
|
|
|
/*
|
|
* Append the address to the list...
|
|
*/
|
|
|
|
if (!first)
|
|
first = temp;
|
|
|
|
if (addr)
|
|
addr->next = temp;
|
|
|
|
addr = temp;
|
|
}
|
|
|
|
/*
|
|
* Free the results from getaddrinfo()...
|
|
*/
|
|
|
|
freeaddrinfo(results);
|
|
}
|
|
else
|
|
{
|
|
if (error == EAI_FAIL)
|
|
cg->need_res_init = 1;
|
|
|
|
# ifdef _WIN32 /* Really, Microsoft?!? */
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, gai_strerrorA(error), 0);
|
|
# else
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, gai_strerror(error), 0);
|
|
# endif /* _WIN32 */
|
|
}
|
|
|
|
#else
|
|
if (hostname)
|
|
{
|
|
int i; /* Looping vars */
|
|
unsigned ip[4]; /* IPv4 address components */
|
|
const char *ptr; /* Pointer into hostname */
|
|
struct hostent *host; /* Result of lookup */
|
|
struct servent *port; /* Port number for service */
|
|
int portnum; /* Port number */
|
|
|
|
|
|
/*
|
|
* Lookup the service...
|
|
*/
|
|
|
|
if (!service)
|
|
portnum = 0;
|
|
else if (isdigit(*service & 255))
|
|
portnum = atoi(service);
|
|
else if ((port = getservbyname(service, NULL)) != NULL)
|
|
portnum = ntohs(port->s_port);
|
|
else if (!strcmp(service, "http"))
|
|
portnum = 80;
|
|
else if (!strcmp(service, "https"))
|
|
portnum = 443;
|
|
else if (!strcmp(service, "ipp") || !strcmp(service, "ipps"))
|
|
portnum = 631;
|
|
else if (!strcmp(service, "lpd"))
|
|
portnum = 515;
|
|
else if (!strcmp(service, "socket"))
|
|
portnum = 9100;
|
|
else
|
|
return (NULL);
|
|
|
|
/*
|
|
* This code is needed because some operating systems have a
|
|
* buggy implementation of gethostbyname() that does not support
|
|
* IPv4 addresses. If the hostname string is an IPv4 address, then
|
|
* sscanf() is used to extract the IPv4 components. We then pack
|
|
* the components into an IPv4 address manually, since the
|
|
* inet_aton() function is deprecated. We use the htonl() macro
|
|
* to get the right byte order for the address.
|
|
*/
|
|
|
|
for (ptr = hostname; isdigit(*ptr & 255) || *ptr == '.'; ptr ++);
|
|
|
|
if (!*ptr)
|
|
{
|
|
/*
|
|
* We have an IPv4 address; break it up and create an IPv4 address...
|
|
*/
|
|
|
|
if (sscanf(hostname, "%u.%u.%u.%u", ip, ip + 1, ip + 2, ip + 3) == 4 &&
|
|
ip[0] <= 255 && ip[1] <= 255 && ip[2] <= 255 && ip[3] <= 255)
|
|
{
|
|
first = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t));
|
|
if (!first)
|
|
return (NULL);
|
|
|
|
first->addr.ipv4.sin_family = AF_INET;
|
|
first->addr.ipv4.sin_addr.s_addr = htonl((((((((unsigned)ip[0] << 8) |
|
|
(unsigned)ip[1]) << 8) |
|
|
(unsigned)ip[2]) << 8) |
|
|
(unsigned)ip[3]));
|
|
first->addr.ipv4.sin_port = htons(portnum);
|
|
}
|
|
}
|
|
else if ((host = gethostbyname(hostname)) != NULL &&
|
|
# ifdef AF_INET6
|
|
(host->h_addrtype == AF_INET || host->h_addrtype == AF_INET6))
|
|
# else
|
|
host->h_addrtype == AF_INET)
|
|
# endif /* AF_INET6 */
|
|
{
|
|
for (i = 0; host->h_addr_list[i]; i ++)
|
|
{
|
|
/*
|
|
* Copy the address over...
|
|
*/
|
|
|
|
temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t));
|
|
if (!temp)
|
|
{
|
|
httpAddrFreeList(first);
|
|
return (NULL);
|
|
}
|
|
|
|
# ifdef AF_INET6
|
|
if (host->h_addrtype == AF_INET6)
|
|
{
|
|
temp->addr.ipv6.sin6_family = AF_INET6;
|
|
memcpy(&(temp->addr.ipv6.sin6_addr), host->h_addr_list[i],
|
|
sizeof(temp->addr.ipv6));
|
|
temp->addr.ipv6.sin6_port = htons(portnum);
|
|
}
|
|
else
|
|
# endif /* AF_INET6 */
|
|
{
|
|
temp->addr.ipv4.sin_family = AF_INET;
|
|
memcpy(&(temp->addr.ipv4.sin_addr), host->h_addr_list[i],
|
|
sizeof(temp->addr.ipv4));
|
|
temp->addr.ipv4.sin_port = htons(portnum);
|
|
}
|
|
|
|
/*
|
|
* Append the address to the list...
|
|
*/
|
|
|
|
if (!first)
|
|
first = temp;
|
|
|
|
if (addr)
|
|
addr->next = temp;
|
|
|
|
addr = temp;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (h_errno == NO_RECOVERY)
|
|
cg->need_res_init = 1;
|
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, hstrerror(h_errno), 0);
|
|
}
|
|
}
|
|
#endif /* HAVE_GETADDRINFO */
|
|
}
|
|
|
|
/*
|
|
* Detect some common errors and handle them sanely...
|
|
*/
|
|
|
|
if (!addr && (!hostname || !_cups_strcasecmp(hostname, "localhost")))
|
|
{
|
|
struct servent *port; /* Port number for service */
|
|
int portnum; /* Port number */
|
|
|
|
|
|
/*
|
|
* Lookup the service...
|
|
*/
|
|
|
|
if (!service)
|
|
portnum = 0;
|
|
else if (isdigit(*service & 255))
|
|
portnum = atoi(service);
|
|
else if ((port = getservbyname(service, NULL)) != NULL)
|
|
portnum = ntohs(port->s_port);
|
|
else if (!strcmp(service, "http"))
|
|
portnum = 80;
|
|
else if (!strcmp(service, "https"))
|
|
portnum = 443;
|
|
else if (!strcmp(service, "ipp") || !strcmp(service, "ipps"))
|
|
portnum = 631;
|
|
else if (!strcmp(service, "lpd"))
|
|
portnum = 515;
|
|
else if (!strcmp(service, "socket"))
|
|
portnum = 9100;
|
|
else
|
|
{
|
|
httpAddrFreeList(first);
|
|
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unknown service name."), 1);
|
|
return (NULL);
|
|
}
|
|
|
|
if (hostname && !_cups_strcasecmp(hostname, "localhost"))
|
|
{
|
|
/*
|
|
* Unfortunately, some users ignore all of the warnings in the
|
|
* /etc/hosts file and delete "localhost" from it. If we get here
|
|
* then we were unable to resolve the name, so use the IPv6 and/or
|
|
* IPv4 loopback interface addresses...
|
|
*/
|
|
|
|
#ifdef AF_INET6
|
|
if (family != AF_INET)
|
|
{
|
|
/*
|
|
* Add [::1] to the address list...
|
|
*/
|
|
|
|
temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t));
|
|
if (!temp)
|
|
{
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0);
|
|
httpAddrFreeList(first);
|
|
return (NULL);
|
|
}
|
|
|
|
temp->addr.ipv6.sin6_family = AF_INET6;
|
|
temp->addr.ipv6.sin6_port = htons(portnum);
|
|
# ifdef _WIN32
|
|
temp->addr.ipv6.sin6_addr.u.Byte[15] = 1;
|
|
# else
|
|
temp->addr.ipv6.sin6_addr.s6_addr32[3] = htonl(1);
|
|
# endif /* _WIN32 */
|
|
|
|
if (!first)
|
|
first = temp;
|
|
|
|
addr = temp;
|
|
}
|
|
|
|
if (family != AF_INET6)
|
|
#endif /* AF_INET6 */
|
|
{
|
|
/*
|
|
* Add 127.0.0.1 to the address list...
|
|
*/
|
|
|
|
temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t));
|
|
if (!temp)
|
|
{
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0);
|
|
httpAddrFreeList(first);
|
|
return (NULL);
|
|
}
|
|
|
|
temp->addr.ipv4.sin_family = AF_INET;
|
|
temp->addr.ipv4.sin_port = htons(portnum);
|
|
temp->addr.ipv4.sin_addr.s_addr = htonl(0x7f000001);
|
|
|
|
if (!first)
|
|
first = temp;
|
|
|
|
if (addr)
|
|
addr->next = temp;
|
|
}
|
|
}
|
|
else if (!hostname)
|
|
{
|
|
/*
|
|
* Provide one or more passive listening addresses...
|
|
*/
|
|
|
|
#ifdef AF_INET6
|
|
if (family != AF_INET)
|
|
{
|
|
/*
|
|
* Add [::] to the address list...
|
|
*/
|
|
|
|
temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t));
|
|
if (!temp)
|
|
{
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0);
|
|
httpAddrFreeList(first);
|
|
return (NULL);
|
|
}
|
|
|
|
temp->addr.ipv6.sin6_family = AF_INET6;
|
|
temp->addr.ipv6.sin6_port = htons(portnum);
|
|
|
|
if (!first)
|
|
first = temp;
|
|
|
|
addr = temp;
|
|
}
|
|
|
|
if (family != AF_INET6)
|
|
#endif /* AF_INET6 */
|
|
{
|
|
/*
|
|
* Add 0.0.0.0 to the address list...
|
|
*/
|
|
|
|
temp = (http_addrlist_t *)calloc(1, sizeof(http_addrlist_t));
|
|
if (!temp)
|
|
{
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0);
|
|
httpAddrFreeList(first);
|
|
return (NULL);
|
|
}
|
|
|
|
temp->addr.ipv4.sin_family = AF_INET;
|
|
temp->addr.ipv4.sin_port = htons(portnum);
|
|
|
|
if (!first)
|
|
first = temp;
|
|
|
|
if (addr)
|
|
addr->next = temp;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return the address list...
|
|
*/
|
|
|
|
return (first);
|
|
}
|