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* TPROXY requires Linux 2.6.29+ (see man 7 ip[1]). * all redsocks code is running as root to bind to arbitrary port. * Non-Linux and old-Linux builds are broken at the moment. [1] http://www.kernel.org/doc/man-pages/online/pages/man7/ip.7.html
70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
#ifndef UTILS_H_SAT_FEB__2_02_24_05_2008
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#define UTILS_H_SAT_FEB__2_02_24_05_2008
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#include <stddef.h>
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#include <time.h>
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#include <event.h>
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struct sockaddr_in;
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#define SIZEOF_ARRAY(arr) (sizeof(arr) / sizeof(arr[0]))
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#define FOREACH(ptr, array) for (ptr = array; ptr < array + SIZEOF_ARRAY(array); ptr++)
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#define FOREACH_REV(ptr, array) for (ptr = array + SIZEOF_ARRAY(array) - 1; ptr >= array; ptr--)
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#define UNUSED(x) ((void)(x))
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#if defined __GNUC__
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#define PACKED __attribute__((packed))
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#else
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#error Unknown compiler, modify utils.h for it
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#endif
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/**
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* container_of - cast a member of a structure out to the containing structure
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* @ptr: the pointer to the member.
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*
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*/
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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#define clamp_value(value, min_val, max_val) do { \
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if (value < min_val) \
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value = min_val; \
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if (value > max_val) \
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value = max_val; \
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} while (0)
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time_t redsocks_time(time_t *t);
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char *redsocks_evbuffer_readline(struct evbuffer *buf);
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struct bufferevent* red_connect_relay(struct sockaddr_in *addr, evbuffercb writecb, everrorcb errorcb, void *cbarg);
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int red_socket_geterrno(struct bufferevent *buffev);
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int red_is_socket_connected_ok(struct bufferevent *buffev);
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int red_recv_udp_pkt(int fd, char *buf, size_t buflen, struct sockaddr_in *fromaddr, struct sockaddr_in *toaddr);
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int fcntl_nonblock(int fd);
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#define event_fmt_str "%s|%s|%s|%s|%s|0x%x"
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#define event_fmt(what) \
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(what) & EVBUFFER_READ ? "EVBUFFER_READ" : "0", \
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(what) & EVBUFFER_WRITE ? "EVBUFFER_WRITE" : "0", \
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(what) & EVBUFFER_EOF ? "EVBUFFER_EOF" : "0", \
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(what) & EVBUFFER_ERROR ? "EVBUFFER_ERROR" : "0", \
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(what) & EVBUFFER_TIMEOUT ? "EVBUFFER_TIMEOUT" : "0", \
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(what) & ~(EVBUFFER_READ|EVBUFFER_WRITE|EVBUFFER_EOF|EVBUFFER_ERROR|EVBUFFER_TIMEOUT)
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#if INET6_ADDRSTRLEN < INET_ADDRSTRLEN
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# error Impossible happens: INET6_ADDRSTRLEN < INET_ADDRSTRLEN
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#else
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# define RED_INET_ADDRSTRLEN (INET6_ADDRSTRLEN + 1 + 5 + 1) // addr + : + port + \0
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#endif
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char *red_inet_ntop(const struct sockaddr_in* sa, char* buffer, size_t buffer_size);
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/* vim:set tabstop=4 softtabstop=4 shiftwidth=4: */
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/* vim:set foldmethod=marker foldlevel=32 foldmarker={,}: */
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#endif /* UTILS_H_SAT_FEB__2_02_24_05_2008 */
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