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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/sndiod/listen.c	Lines:	0	128	0.0 %
Date:	2017-11-13	Branches:	0	52	0.0 %


/*	$OpenBSD: listen.c,v 1.12 2017/01/03 06:51:56 ratchov Exp $	*/
/*
 * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/signal.h>
#include <sys/stat.h>
#include <sys/un.h>

#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netdb.h>

#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "listen.h"
#include "file.h"
#include "sock.h"
#include "utils.h"

int listen_pollfd(void *, struct pollfd *);
int listen_revents(void *, struct pollfd *);
void listen_in(void *);
void listen_out(void *);
void listen_hup(void *);

struct fileops listen_fileops = {
	"listen",
	listen_pollfd,
	listen_revents,
	listen_in,
	listen_out,
	listen_hup
};

struct listen *listen_list = NULL;

void
listen_close(struct listen *f)
{
	struct listen **pf;

	for (pf = &listen_list; *pf != f; pf = &(*pf)->next) {
#ifdef DEBUG
		if (*pf == NULL) {
			log_puts("listen_close: not on list\n");
			panic();
		}
#endif
	}
	*pf = f->next;

	if (f->path != NULL) {
		xfree(f->path);
	}
	file_del(f->file);
	close(f->fd);
	xfree(f);
}

int
listen_new_un(char *path)
{
	int sock, oldumask;
	struct sockaddr_un sockname;
	struct listen *f;

	sock = socket(AF_UNIX, SOCK_STREAM, 0);
	if (sock < 0) {
		log_puts(path);
		log_puts(": failed to create socket\n");
		return 0;
	}
	if (unlink(path) < 0 && errno != ENOENT) {
		log_puts(path);
		log_puts(": failed to unlink socket\n");
		goto bad_close;
	}
	sockname.sun_family = AF_UNIX;
	strlcpy(sockname.sun_path, path, sizeof(sockname.sun_path));
	oldumask = umask(0111);
	if (bind(sock, (struct sockaddr *)&sockname,
		sizeof(struct sockaddr_un)) < 0) {
		log_puts(path);
		log_puts(": failed to bind socket\n");
		goto bad_close;
	}
	if (listen(sock, 1) < 0) {
		log_puts(path);
		log_puts(": failed to listen\n");
		goto bad_close;
	}
	umask(oldumask);
	f = xmalloc(sizeof(struct listen));
	f->file = file_new(&listen_fileops, f, path, 1);
	if (f->file == NULL)
		goto bad_close;
	f->path = xstrdup(path);
	f->fd = sock;
	f->next = listen_list;
	listen_list = f;
	return 1;
 bad_close:
	close(sock);
	return 0;
}

int
listen_new_tcp(char *addr, unsigned int port)
{
	char *host, serv[sizeof(unsigned int) * 3 + 1];
	struct addrinfo *ailist, *ai, aihints;
	struct listen *f;
	int s, error, opt = 1, n = 0;

	/*
	 * obtain a list of possible addresses for the host/port
	 */
	memset(&aihints, 0, sizeof(struct addrinfo));
	snprintf(serv, sizeof(serv), "%u", port);
	host = strcmp(addr, "-") == 0 ? NULL : addr;
	aihints.ai_flags |= AI_PASSIVE;
	aihints.ai_socktype = SOCK_STREAM;
	aihints.ai_protocol = IPPROTO_TCP;
	error = getaddrinfo(host, serv, &aihints, &ailist);
	if (error) {
		log_puts(addr);
		log_puts(": failed to resolve address\n");
		return 0;
	}

	/*
	 * for each address, try create a listening socket bound on
	 * that address
	 */
	for (ai = ailist; ai != NULL; ai = ai->ai_next) {
		s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
		if (s < 0) {
			log_puts(addr);
			log_puts(": failed to create socket\n");
			continue;
		}
		opt = 1;
		if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
			&opt, sizeof(int)) < 0) {
			log_puts(addr);
			log_puts(": failed to set SO_REUSEADDR\n");
			goto bad_close;
		}
		if (bind(s, ai->ai_addr, ai->ai_addrlen) < 0) {
			log_puts(addr);
			log_puts(": failed to bind socket\n");
			goto bad_close;
		}
		if (listen(s, 1) < 0) {
			log_puts(addr);
			log_puts(": failed to listen\n");
			goto bad_close;
		}
		f = xmalloc(sizeof(struct listen));
		f->file = file_new(&listen_fileops, f, addr, 1);
		if (f == NULL) {
		bad_close:
			close(s);
			continue;
		}
		f->path = NULL;
		f->fd = s;
		f->next = listen_list;
		listen_list = f;
		n++;
	}
	freeaddrinfo(ailist);
	return n;
}

int
listen_init(struct listen *f)
{
	return 1;
}

int
listen_pollfd(void *arg, struct pollfd *pfd)
{
	struct listen *f = arg;

	f->slowaccept = file_slowaccept;
	if (f->slowaccept)
		return 0;
	pfd->fd = f->fd;
	pfd->events = POLLIN;
	return 1;
}

int
listen_revents(void *arg, struct pollfd *pfd)
{
	struct listen *f = arg;

	if (f->slowaccept)
		return 0;
	return pfd->revents;
}

void
listen_in(void *arg)
{
	struct listen *f = arg;
	struct sockaddr caddr;
	socklen_t caddrlen;
	int sock, opt;

	caddrlen = sizeof(caddrlen);
	while ((sock = accept(f->fd, &caddr, &caddrlen)) < 0) {
		if (errno == EINTR)
			continue;
		if (errno == ENFILE || errno == EMFILE)
			file_slowaccept = 1;
		return;
	}
	if (fcntl(sock, F_SETFL, O_NONBLOCK) < 0) {
		file_log(f->file);
		log_puts(": failed to set non-blocking mode\n");
		goto bad_close;
	}
	if (f->path == NULL) {
		opt = 1;
		if (setsockopt(sock, IPPROTO_TCP, TCP_NODELAY,
			&opt, sizeof(int)) < 0) {
			file_log(f->file);
			log_puts(": failed to set TCP_NODELAY flag\n");
			goto bad_close;
		}
	}
	if (sock_new(sock) == NULL)
		goto bad_close;
	return;
bad_close:
	close(sock);
}

void
listen_out(void *arg)
{
}

void
listen_hup(void *arg)
{
	struct listen *f = arg;

	listen_close(f);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: listen.c,v 1.12 2017/01/03 06:51:56 ratchov Exp $ */
2			/*
3			* Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
4			*
5			* Permission to use, copy, modify, and distribute this software for any
6			* purpose with or without fee is hereby granted, provided that the above
7			* copyright notice and this permission notice appear in all copies.
8			*
9			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16			*/
17			#include <sys/types.h>
18			#include <sys/socket.h>
19			#include <sys/signal.h>
20			#include <sys/stat.h>
21			#include <sys/un.h>
22
23			#include <netinet/in.h>
24			#include <netinet/tcp.h>
25			#include <netdb.h>
26
27			#include <errno.h>
28			#include <fcntl.h>
29			#include <poll.h>
30			#include <stdio.h>
31			#include <string.h>
32			#include <unistd.h>
33
34			#include "listen.h"
35			#include "file.h"
36			#include "sock.h"
37			#include "utils.h"
38
39			int listen_pollfd(void , struct pollfd );
40			int listen_revents(void , struct pollfd );
41			void listen_in(void *);
42			void listen_out(void *);
43			void listen_hup(void *);
44
45			struct fileops listen_fileops = {
46			"listen",
47			listen_pollfd,
48			listen_revents,
49			listen_in,
50			listen_out,
51			listen_hup
52			};
53
54			struct listen *listen_list = NULL;
55
56			void
57			listen_close(struct listen *f)
58			{
59			struct listen **pf;
60
61			for (pf = &listen_list; pf != f; pf = &(pf)->next) {
62			#ifdef DEBUG
63			if (*pf == NULL) {
64			log_puts("listen_close: not on list\n");
65			panic();
66			}
67			#endif
68			}
69			*pf = f->next;
70
71			if (f->path != NULL) {
72			xfree(f->path);
73			}
74			file_del(f->file);
75			close(f->fd);
76			xfree(f);
77			}
78
79			int
80			listen_new_un(char *path)
81			{
82			int sock, oldumask;
83			struct sockaddr_un sockname;
84			struct listen *f;
85
86			sock = socket(AF_UNIX, SOCK_STREAM, 0);
87			if (sock < 0) {
88			log_puts(path);
89			log_puts(": failed to create socket\n");
90			return 0;
91			}
92			if (unlink(path) < 0 && errno != ENOENT) {
93			log_puts(path);
94			log_puts(": failed to unlink socket\n");
95			goto bad_close;
96			}
97			sockname.sun_family = AF_UNIX;
98			strlcpy(sockname.sun_path, path, sizeof(sockname.sun_path));
99			oldumask = umask(0111);
100			if (bind(sock, (struct sockaddr *)&sockname,
101			sizeof(struct sockaddr_un)) < 0) {
102			log_puts(path);
103			log_puts(": failed to bind socket\n");
104			goto bad_close;
105			}
106			if (listen(sock, 1) < 0) {
107			log_puts(path);
108			log_puts(": failed to listen\n");
109			goto bad_close;
110			}
111			umask(oldumask);
112			f = xmalloc(sizeof(struct listen));
113			f->file = file_new(&listen_fileops, f, path, 1);
114			if (f->file == NULL)
115			goto bad_close;
116			f->path = xstrdup(path);
117			f->fd = sock;
118			f->next = listen_list;
119			listen_list = f;
120			return 1;
121			bad_close:
122			close(sock);
123			return 0;
124			}
125
126			int
127			listen_new_tcp(char *addr, unsigned int port)
128			{
129			char host, serv[sizeof(unsigned int) 3 + 1];
130			struct addrinfo ailist, ai, aihints;
131			struct listen *f;
132			int s, error, opt = 1, n = 0;
133
134			/*
135			* obtain a list of possible addresses for the host/port
136			*/
137			memset(&aihints, 0, sizeof(struct addrinfo));
138			snprintf(serv, sizeof(serv), "%u", port);
139			host = strcmp(addr, "-") == 0 ? NULL : addr;
140			aihints.ai_flags \|= AI_PASSIVE;
141			aihints.ai_socktype = SOCK_STREAM;
142			aihints.ai_protocol = IPPROTO_TCP;
143			error = getaddrinfo(host, serv, &aihints, &ailist);
144			if (error) {
145			log_puts(addr);
146			log_puts(": failed to resolve address\n");
147			return 0;
148			}
149
150			/*
151			* for each address, try create a listening socket bound on
152			* that address
153			*/
154			for (ai = ailist; ai != NULL; ai = ai->ai_next) {
155			s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
156			if (s < 0) {
157			log_puts(addr);
158			log_puts(": failed to create socket\n");
159			continue;
160			}
161			opt = 1;
162			if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
163			&opt, sizeof(int)) < 0) {
164			log_puts(addr);
165			log_puts(": failed to set SO_REUSEADDR\n");
166			goto bad_close;
167			}
168			if (bind(s, ai->ai_addr, ai->ai_addrlen) < 0) {
169			log_puts(addr);
170			log_puts(": failed to bind socket\n");
171			goto bad_close;
172			}
173			if (listen(s, 1) < 0) {
174			log_puts(addr);
175			log_puts(": failed to listen\n");
176			goto bad_close;
177			}
178			f = xmalloc(sizeof(struct listen));
179			f->file = file_new(&listen_fileops, f, addr, 1);
180			if (f == NULL) {
181			bad_close:
182			close(s);
183			continue;
184			}
185			f->path = NULL;
186			f->fd = s;
187			f->next = listen_list;
188			listen_list = f;
189			n++;
190			}
191			freeaddrinfo(ailist);
192			return n;
193			}
194
195			int
196			listen_init(struct listen *f)
197			{
198			return 1;
199			}
200
201			int
202			listen_pollfd(void arg, struct pollfd pfd)
203			{
204			struct listen *f = arg;
205
206			f->slowaccept = file_slowaccept;
207			if (f->slowaccept)
208			return 0;
209			pfd->fd = f->fd;
210			pfd->events = POLLIN;
211			return 1;
212			}
213
214			int
215			listen_revents(void arg, struct pollfd pfd)
216			{
217			struct listen *f = arg;
218
219			if (f->slowaccept)
220			return 0;
221			return pfd->revents;
222			}
223
224			void
225			listen_in(void *arg)
226			{
227			struct listen *f = arg;
228			struct sockaddr caddr;
229			socklen_t caddrlen;
230			int sock, opt;
231
232			caddrlen = sizeof(caddrlen);
233			while ((sock = accept(f->fd, &caddr, &caddrlen)) < 0) {
234			if (errno == EINTR)
235			continue;
236			if (errno == ENFILE \|\| errno == EMFILE)
237			file_slowaccept = 1;
238			return;
239			}
240			if (fcntl(sock, F_SETFL, O_NONBLOCK) < 0) {
241			file_log(f->file);
242			log_puts(": failed to set non-blocking mode\n");
243			goto bad_close;
244			}
245			if (f->path == NULL) {
246			opt = 1;
247			if (setsockopt(sock, IPPROTO_TCP, TCP_NODELAY,
248			&opt, sizeof(int)) < 0) {
249			file_log(f->file);
250			log_puts(": failed to set TCP_NODELAY flag\n");
251			goto bad_close;
252			}
253			}
254			if (sock_new(sock) == NULL)
255			goto bad_close;
256			return;
257			bad_close:
258			close(sock);
259			}
260
261			void
262			listen_out(void *arg)
263			{
264			}
265
266			void
267			listen_hup(void *arg)
268			{
269			struct listen *f = arg;
270
271			listen_close(f);
272			}