]>
Commit | Line | Data |
---|---|---|
f68414c6 | 1 | /* |
4ac4a490 | 2 | * Copyright (C) 1996-2017 The Squid Software Foundation and contributors |
37be9888 AJ |
3 | * |
4 | * Squid software is distributed under GPLv2+ license and includes | |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
f68414c6 | 7 | */ |
37be9888 | 8 | |
14c0d3ab DK |
9 | #ifndef SQUID_COMPAT_CMSG_H |
10 | #define SQUID_COMPAT_CMSG_H | |
11 | ||
37be9888 AJ |
12 | /* |
13 | * Compatibility-layer for CMSG_ | |
14 | */ | |
15 | ||
f68414c6 | 16 | // cmsg.h is found through sys/socket.h |
14c0d3ab DK |
17 | #if HAVE_SYS_SOCKET_H |
18 | #include <sys/socket.h> | |
19 | #endif | |
20 | ||
2ff9dfaa AJ |
21 | // mswsock.h defines WSA_CMSG definitions |
22 | #if HAVE_MSWSOCK_H | |
23 | #include <mswsock.h> | |
24 | #endif | |
5c01f369 AJ |
25 | #if HAVE_WINSOCK2_H |
26 | #include <winsock2.h> | |
5c01f369 AJ |
27 | #endif |
28 | ||
c72f8c2e AJ |
29 | // sockaddr_un might be in sys/un.h if not pulled in already |
30 | #if HAVE_SYS_UN_H | |
31 | #include <sys/un.h> | |
32 | #endif | |
f68414c6 | 33 | |
c72f8c2e | 34 | #if !HAVE_CMSGHDR |
00e73a76 | 35 | struct cmsghdr { |
c72f8c2e AJ |
36 | unsigned int cmsg_len; |
37 | int cmsg_level; | |
38 | int cmsg_type; | |
00e73a76 A |
39 | unsigned char cmsg_data[16]; /* dummy */ |
40 | /* followed by UCHAR cmsg_data[]; */ | |
c72f8c2e AJ |
41 | }; |
42 | #endif | |
f68414c6 AJ |
43 | |
44 | /* lifted off https://metacpan.org/source/SAMPO/Socket-PassAccessRights-0.03/passfd.c */ | |
2ff9dfaa AJ |
45 | // check for WSA_CMSG first because Windows defines CMSG_DATA for other uses |
46 | #if defined(WSA_CMSG_DATA) | |
47 | # define SQUID_CMSG_DATA(cmsg) WSA_CMSG_DATA(cmsg) | |
48 | #elif defined(CMSG_DATA) | |
49 | # define SQUID_CMSG_DATA(cmsg) CMSG_DATA(cmsg) | |
50 | #else | |
51 | # define SQUID_CMSG_DATA(cmsg) ((cmsg)->cmsg_data) | |
f68414c6 AJ |
52 | #endif |
53 | ||
54 | #ifndef CMSG_NXTHDR | |
2ff9dfaa | 55 | # define CMSG_NXTHDR(mhdr, X) __cmsg_nxthdr (mhdr, X) |
f68414c6 AJ |
56 | #endif |
57 | ||
58 | #ifndef CMSG_FIRSTHDR | |
59 | # define CMSG_FIRSTHDR(mhdr) \ | |
60 | ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \ | |
61 | ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL) | |
62 | #endif | |
63 | ||
64 | #ifndef CMSG_ALIGN | |
65 | # define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \ | |
66 | & ~(sizeof (size_t) - 1)) | |
67 | #endif | |
68 | ||
c72f8c2e | 69 | #ifndef CMSG_SPACE |
f68414c6 AJ |
70 | # define CMSG_SPACE(len) (CMSG_ALIGN (len) \ |
71 | + CMSG_ALIGN (sizeof (struct cmsghdr))) | |
72 | #undef HAVE_CONSTANT_CMSG_SPACE | |
73 | #define HAVE_CONSTANT_CMSG_SPACE 1 | |
c72f8c2e | 74 | #endif |
f68414c6 AJ |
75 | |
76 | #ifndef CMSG_LEN | |
77 | # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len)) | |
78 | #endif | |
79 | ||
c72f8c2e AJ |
80 | #if !HAVE_IOVEC |
81 | struct iovec { | |
82 | void *iov_base; | |
83 | size_t iov_len; | |
84 | }; | |
85 | #endif | |
86 | ||
87 | #if !HAVE_MSGHDR | |
f68414c6 AJ |
88 | struct msghdr { |
89 | void *msg_name; /* Address to send to/receive from. */ | |
90 | socklen_t msg_namelen; /* Length of address data. */ | |
91 | ||
92 | struct iovec *msg_iov; /* Vector of data to send/receive into. */ | |
93 | size_t msg_iovlen; /* Number of elements in the vector. */ | |
94 | ||
95 | void *msg_control; /* Ancillary data (eg BSD filedesc passing). */ | |
96 | size_t msg_controllen; /* Ancillary data buffer length. | |
97 | !! The type should be socklen_t but the | |
98 | definition of the kernel is incompatible | |
99 | with this. */ | |
100 | ||
101 | int msg_flags; /* Flags on received message. */ | |
102 | }; | |
c72f8c2e | 103 | #endif |
f68414c6 | 104 | |
c72f8c2e | 105 | #if !HAVE_SOCKADDR_UN |
f68414c6 | 106 | struct sockaddr_un { |
00e73a76 | 107 | char sun_family; |
f68414c6 AJ |
108 | char sun_path[256]; /* pathname */ |
109 | }; | |
c72f8c2e AJ |
110 | #endif |
111 | ||
112 | #ifndef SUN_LEN | |
f68414c6 AJ |
113 | # define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) \ |
114 | + strlen ((ptr)->sun_path)) | |
c72f8c2e | 115 | #endif |
f68414c6 AJ |
116 | |
117 | #ifndef SCM_RIGHTS | |
118 | #define SCM_RIGHTS 1 | |
119 | #endif | |
120 | #ifndef SCM_CREDENTIALS | |
121 | #define SCM_CREDENTIALS 2 | |
122 | #endif | |
123 | #ifndef SCM_SECURITY | |
124 | #define SCM_SECURITY 3 | |
125 | #endif | |
126 | ||
127 | #ifndef AF_LOCAL | |
128 | #define AF_LOCAL 1 | |
129 | #endif | |
130 | ||
f68414c6 AJ |
131 | // CMSG_SPACE is not constant on some systems (in particular Max OS X), |
132 | // provide a replacement that can be used at build time in that case | |
133 | // NP: this must go below our replacement definitions. | |
134 | ||
14c0d3ab DK |
135 | #if HAVE_CONSTANT_CMSG_SPACE |
136 | #define SQUID_CMSG_SPACE CMSG_SPACE | |
137 | #else | |
138 | // add 16 bytes for header and data alignment | |
139 | #define SQUID_CMSG_SPACE(len) (sizeof(struct cmsghdr) + (len) + 16) | |
140 | #endif | |
141 | ||
142 | #endif /* SQUID_COMPAT_CMSG_H */ | |
f53969cc | 143 |