1 | /* Our own header. Tabs are set for 4 spaces, not 8 */ |
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2 | |
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3 | #ifndef __unp_h |
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4 | #define __unp_h |
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5 | |
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6 | #include "../config.h" /* configuration options for current OS */ |
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7 | /* "../config.h" is generated by configure */ |
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8 | |
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9 | /* If anything changes in the following list of #includes, must change |
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10 | acsite.m4 also, for configure's tests. */ |
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11 | |
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12 | #include <sys/types.h> /* basic system data types */ |
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13 | #include <sys/socket.h> /* basic socket definitions */ |
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14 | #include <sys/time.h> /* timeval{} for select() */ |
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15 | #include <time.h> /* timespec{} for pselect() */ |
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16 | #include <netinet/in.h> /* sockaddr_in{} and other Internet defns */ |
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17 | #include <arpa/inet.h> /* inet(3) functions */ |
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18 | #include <errno.h> |
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19 | #include <fcntl.h> /* for nonblocking */ |
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20 | #include <netdb.h> |
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21 | #include <signal.h> |
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22 | #include <stdio.h> |
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23 | #include <stdlib.h> |
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24 | #include <string.h> |
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25 | #include <sys/stat.h> /* for S_xxx file mode constants */ |
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26 | #include <sys/uio.h> /* for iovec{} and readv/writev */ |
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27 | #include <unistd.h> |
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28 | #include <sys/wait.h> |
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29 | #include <sys/un.h> /* for Unix domain sockets */ |
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30 | |
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31 | #ifdef HAVE_SYS_SELECT_H |
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32 | # include <sys/select.h> /* for convenience */ |
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33 | #endif |
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34 | |
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35 | #ifdef HAVE_SYS_SYSCTL_H |
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36 | # include <sys/sysctl.h> |
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37 | #endif |
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38 | |
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39 | #ifdef HAVE_POLL_H |
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40 | # include <poll.h> /* for convenience */ |
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41 | #endif |
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42 | |
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43 | #ifdef HAVE_SYS_EVENT_H |
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44 | # include <sys/event.h> /* for kqueue */ |
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45 | #endif |
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46 | |
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47 | #ifdef HAVE_STRINGS_H |
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48 | # include <strings.h> /* for convenience */ |
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49 | #endif |
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50 | |
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51 | /* Three headers are normally needed for socket/file ioctl's: |
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52 | * <sys/ioctl.h>, <sys/filio.h>, and <sys/sockio.h>. |
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53 | */ |
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54 | #ifdef HAVE_SYS_IOCTL_H |
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55 | # include <sys/ioctl.h> |
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56 | #endif |
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57 | #ifdef HAVE_SYS_FILIO_H |
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58 | # include <sys/filio.h> |
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59 | #endif |
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60 | #ifdef HAVE_SYS_SOCKIO_H |
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61 | # include <sys/sockio.h> |
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62 | #endif |
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63 | |
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64 | #ifdef HAVE_PTHREAD_H |
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65 | # include <pthread.h> |
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66 | #endif |
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67 | |
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68 | #ifdef HAVE_NET_IF_DL_H |
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69 | # include <net/if_dl.h> |
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70 | #endif |
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71 | |
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72 | #ifdef HAVE_NETINET_SCTP_H |
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73 | #include <netinet/sctp.h> |
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74 | #endif |
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75 | |
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76 | /* OSF/1 actually disables recv() and send() in <sys/socket.h> */ |
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77 | #ifdef __osf__ |
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78 | #undef recv |
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79 | #undef send |
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80 | #define recv(a,b,c,d) recvfrom(a,b,c,d,0,0) |
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81 | #define send(a,b,c,d) sendto(a,b,c,d,0,0) |
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82 | #endif |
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83 | |
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84 | #ifndef INADDR_NONE |
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85 | #define INADDR_NONE 0xffffffff /* should have been in <netinet/in.h> */ |
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86 | #endif |
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87 | |
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88 | #ifndef SHUT_RD /* these three POSIX names are new */ |
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89 | #define SHUT_RD 0 /* shutdown for reading */ |
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90 | #define SHUT_WR 1 /* shutdown for writing */ |
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91 | #define SHUT_RDWR 2 /* shutdown for reading and writing */ |
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92 | #endif |
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93 | |
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94 | #ifndef INET_ADDRSTRLEN |
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95 | #define INET_ADDRSTRLEN 16 /* "ddd.ddd.ddd.ddd\0" |
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96 | 1234567890123456 */ |
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97 | #endif |
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98 | |
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99 | /* Define following even if IPv6 not supported, so we can always allocate |
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100 | an adequately sized buffer without #ifdefs in the code. */ |
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101 | #ifndef INET6_ADDRSTRLEN |
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102 | #define INET6_ADDRSTRLEN 46 /* max size of IPv6 address string: |
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103 | "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx" or |
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104 | "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:ddd.ddd.ddd.ddd\0" |
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105 | 1234567890123456789012345678901234567890123456 */ |
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106 | #endif |
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107 | |
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108 | /* Define bzero() as a macro if it's not in standard C library. */ |
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109 | #ifndef HAVE_BZERO |
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110 | #define bzero(ptr,n) memset (ptr, 0, n) |
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111 | #endif |
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112 | |
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113 | /* Older resolvers do not have gethostbyname2() */ |
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114 | #ifndef HAVE_GETHOSTBYNAME2 |
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115 | #define gethostbyname2(host,family) gethostbyname((host)) |
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116 | #endif |
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117 | |
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118 | /* The structure returned by recvfrom_flags() */ |
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119 | struct unp_in_pktinfo { |
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120 | struct in_addr ipi_addr; /* dst IPv4 address */ |
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121 | int ipi_ifindex; /* received interface index */ |
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122 | }; |
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123 | |
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124 | /* We need the newer CMSG_LEN() and CMSG_SPACE() macros, but few |
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125 | implementations support them today. These two macros really need |
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126 | an ALIGN() macro, but each implementation does this differently. */ |
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127 | #ifndef CMSG_LEN |
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128 | #define CMSG_LEN(size) (sizeof(struct cmsghdr) + (size)) |
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129 | #endif |
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130 | #ifndef CMSG_SPACE |
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131 | #define CMSG_SPACE(size) (sizeof(struct cmsghdr) + (size)) |
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132 | #endif |
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133 | |
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134 | /* POSIX requires the SUN_LEN() macro, but not all implementations define |
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135 | it (yet). Note that this 4.4BSD macro works regardless whether there is |
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136 | a length field or not. */ |
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137 | #ifndef SUN_LEN |
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138 | # define SUN_LEN (su) \ |
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139 | (sizeof (*(su)) - sizeof ((su)->sun_path) + strlen((su)->sun_path)) |
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140 | #endif |
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141 | |
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142 | /* POSIX renames "Unix domain" as "local IPC." |
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143 | Not all systems define AF_LOCAL and PF_LOCAL (yet). */ |
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144 | #ifndef AF_LOCAL |
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145 | #define AF_LOCAL AF_UNIX |
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146 | #endif |
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147 | #ifndef PF_LOCAL |
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148 | #define PF_LOCAL PF_UNIX |
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149 | #endif |
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150 | |
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151 | /* POSIX requires that an #include of <poll.h> define INFTIM, but many |
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152 | systems still define it in <sys/stropts.h>. We don't want to include |
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153 | all the STREAMS stuff if it's not needed, so we just define INFTIM here. |
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154 | This is the standard value, but there's no guarantee it is -1. */ |
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155 | #ifndef INFTIM |
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156 | #define INFTIM (-1) /* infinite poll timeout */ |
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157 | #ifdef HAVE_POLL_H |
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158 | #define INFTIM_UNPH /* tell unpxti.h we defined it */ |
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159 | #endif |
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160 | #endif |
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161 | |
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162 | /* Following could be derived from SOMAXCONN in <sys/socket.h>, but many |
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163 | kernels still #define it as 5, while actually supporting many more */ |
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164 | #define LISTENQ 1024 /* 2nd argument to listen () */ |
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165 | |
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166 | /* Miscellaneous constants */ |
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167 | #define MAXLINE 4096 /* max text line length */ |
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168 | #define BUFFSIZE 8192 /* buffer size for reads and writes */ |
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169 | |
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170 | /* Define some port number that can be used for our examples */ |
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171 | #define SERV_PORT 9877 /* TCP and UDP */ |
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172 | #define SERV_PORT_STR "9877" /* TCP and UDP */ |
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173 | #define UNIXSTR_PATH "/tmp/unix.str" /* Unix domain stream */ |
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174 | #define UNIXDG_PATH "/tmp/unix.dg" /* Unix domain datagram */ |
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175 | |
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176 | /* Following shortens all the typecasts of pointer arguments: */ |
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177 | #define SA struct sockaddr |
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178 | |
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179 | #define HAVE_STRUCT_SOCKADDR_STORAGE |
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180 | #ifndef HAVE_STRUCT_SOCKADDR_STORAGE |
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181 | /* |
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182 | * RFC 3493: protocol-independent placeholder for socket addresses |
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183 | */ |
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184 | #define __SS_MAXSIZE 128 |
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185 | #define __SS_ALIGNSIZE (sizeof(int64_t)) |
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186 | #ifdef HAVE_SOCKADDR_SA_LEN |
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187 | #define __SS_PAD1SIZE (__SS_ALIGNSIZE - sizeof(u_char) - sizeof(sa_family_t)) |
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188 | #else |
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189 | #define __SS_PAD1SIZE (__SS_ALIGNSIZE - sizeof(sa_family_t)) |
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190 | #endif |
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191 | #define __SS_PAD2SIZE (__SS_MAXSIZE - 2*__SS_ALIGNSIZE) |
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192 | |
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193 | struct sockaddr_storage { |
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194 | #ifdef HAVE_SOCKADDR_SA_LEN |
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195 | u_char ss_len; |
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196 | #endif |
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197 | sa_family_t ss_family; |
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198 | char __ss_pad1[__SS_PAD1SIZE]; |
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199 | int64_t __ss_align; |
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200 | char __ss_pad2[__SS_PAD2SIZE]; |
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201 | }; |
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202 | #endif |
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203 | |
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204 | #define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) |
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205 | /* default file access permissions for new files */ |
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206 | #define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH) |
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207 | /* default permissions for new directories */ |
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208 | |
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209 | typedef void Sigfunc (int); /* for signal handlers */ |
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210 | |
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211 | #define min(a,b) ((a) < (b) ? (a) : (b)) |
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212 | #define max(a,b) ((a) > (b) ? (a) : (b)) |
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213 | |
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214 | #ifndef HAVE_ADDRINFO_STRUCT |
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215 | # include "../lib/addrinfo.h" |
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216 | #endif |
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217 | |
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218 | #ifndef HAVE_IF_NAMEINDEX_STRUCT |
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219 | struct if_nameindex { |
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220 | unsigned int if_index; /* 1, 2, ... */ |
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221 | char *if_name; /* null-terminated name: "le0", ... */ |
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222 | }; |
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223 | #endif |
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224 | |
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225 | #ifndef HAVE_TIMESPEC_STRUCT |
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226 | struct timespec { |
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227 | time_t tv_sec; /* seconds */ |
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228 | long tv_nsec; /* and nanoseconds */ |
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229 | }; |
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230 | #endif |
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231 | |
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