| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2004-7, 2009, 2011-13 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file lib/client-common.c |
| 19 | * @brief Common code to client APIs |
| 20 | */ |
| 21 | |
| 22 | #include "common.h" |
| 23 | |
| 24 | #if HAVE_NETINET_IN_H |
| 25 | # include <netinet/in.h> |
| 26 | #endif |
| 27 | #if HAVE_SYS_UN_H |
| 28 | # include <sys/un.h> |
| 29 | #endif |
| 30 | #include <errno.h> |
| 31 | #if HAVE_NETDB_H |
| 32 | # include <netdb.h> |
| 33 | #endif |
| 34 | #if HAVE_UNISTD_H |
| 35 | # include <unistd.h> |
| 36 | #endif |
| 37 | #if HAVE_WS2TCPIP_H |
| 38 | # include <Ws2tcpip.h> |
| 39 | #endif |
| 40 | |
| 41 | #include "log.h" |
| 42 | #include "configuration.h" |
| 43 | #include "client-common.h" |
| 44 | #include "addr.h" |
| 45 | #include "mem.h" |
| 46 | |
| 47 | /** @brief Figure out what address to connect to |
| 48 | * @param c Configuration to honor |
| 49 | * @param flags Flags to guide the choice |
| 50 | * @param sap Where to store pointer to sockaddr |
| 51 | * @param namep Where to store socket name |
| 52 | * @return Socket length, or (socklen_t)-1 |
| 53 | */ |
| 54 | socklen_t disorder_find_server(struct config *c, unsigned flags, |
| 55 | struct sockaddr **sap, char **namep) { |
| 56 | struct sockaddr *sa; |
| 57 | #if !_WIN32 |
| 58 | struct sockaddr_un su; |
| 59 | #endif |
| 60 | struct addrinfo *res = 0; |
| 61 | char *name = NULL; |
| 62 | socklen_t len; |
| 63 | |
| 64 | if(c->connect.af != -1) { |
| 65 | res = netaddress_resolve(&c->connect, 0, IPPROTO_TCP); |
| 66 | if(!res) |
| 67 | return -1; |
| 68 | sa = res->ai_addr; |
| 69 | len = res->ai_addrlen; |
| 70 | } else { |
| 71 | #if _WIN32 |
| 72 | disorder_fatal(0, "local connections are not supported on Windows"); |
| 73 | #else |
| 74 | /* use the private socket if possible (which it should be) */ |
| 75 | if (!(flags & DISORDER_FS_NOTPRIV)) { |
| 76 | name = config_get_file2(c, "private/socket"); |
| 77 | if(access(name, R_OK) != 0) { |
| 78 | xfree(name); |
| 79 | name = NULL; |
| 80 | } |
| 81 | } |
| 82 | if(!name) |
| 83 | name = config_get_file2(c, "socket"); |
| 84 | if(strlen(name) >= sizeof su.sun_path) { |
| 85 | disorder_error(0, "socket path is too long"); |
| 86 | return -1; |
| 87 | } |
| 88 | memset(&su, 0, sizeof su); |
| 89 | su.sun_family = AF_UNIX; |
| 90 | strcpy(su.sun_path, name); |
| 91 | sa = (struct sockaddr *)&su; |
| 92 | len = sizeof su; |
| 93 | xfree(name); |
| 94 | #endif |
| 95 | } |
| 96 | *sap = xmalloc_noptr(len); |
| 97 | memcpy(*sap, sa, len); |
| 98 | if(namep) |
| 99 | *namep = format_sockaddr(sa); |
| 100 | if(res) |
| 101 | freeaddrinfo(res); |
| 102 | return len; |
| 103 | } |
| 104 | |
| 105 | /** @brief Figure out what address to connect to |
| 106 | * @param c Configuration to honor |
| 107 | * @param sap Where to store pointer to sockaddr |
| 108 | * @param namep Where to store socket name |
| 109 | * @return Socket length, or (socklen_t)-1 |
| 110 | * |
| 111 | * The function disorder_find_server() isn't a namespace violation, and has |
| 112 | * more functionality. This function is equivalent, to disorder_find_server() |
| 113 | * with a zero @c flags argument. |
| 114 | */ |
| 115 | socklen_t find_server(struct config *c, |
| 116 | struct sockaddr **sap, char **namep) { |
| 117 | return disorder_find_server(c, 0, sap, namep); |
| 118 | } |
| 119 | |
| 120 | const char disorder__body[1]; |
| 121 | const char disorder__list[1]; |
| 122 | const char disorder__integer[1]; |
| 123 | const char disorder__time[1]; |
| 124 | |
| 125 | /* |
| 126 | Local Variables: |
| 127 | c-basic-offset:2 |
| 128 | comment-column:40 |
| 129 | fill-column:79 |
| 130 | indent-tabs-mode:nil |
| 131 | End: |
| 132 | */ |