[deb_ffmpeg.git] / ffmpeg / libavformat / os_support.c

/*
 * various OS-feature replacement utilities
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
 * copyright (c) 2002 Francois Revol
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/* needed by inet_aton() */
#define _SVID_SOURCE

#include "config.h"
#include "avformat.h"
#include "os_support.h"

#if CONFIG_NETWORK
#include <fcntl.h>
#if !HAVE_POLL_H
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif /* HAVE_SYS_TIME_H */
#if HAVE_WINSOCK2_H
#include <winsock2.h>
#elif HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif /* HAVE_WINSOCK2_H */
#endif /* !HAVE_POLL_H */

#include "network.h"

#if !HAVE_INET_ATON
#include <stdlib.h>

int ff_inet_aton(const char *str, struct in_addr *add)
{
    unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;

    if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
        return 0;

    if (!add1 || (add1 | add2 | add3 | add4) > 255)
        return 0;

    add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);

    return 1;
}
#else
int ff_inet_aton(const char *str, struct in_addr *add)
{
    return inet_aton(str, add);
}
#endif /* !HAVE_INET_ATON */

#if !HAVE_GETADDRINFO
int ff_getaddrinfo(const char *node, const char *service,
                   const struct addrinfo *hints, struct addrinfo **res)
{
    struct hostent *h = NULL;
    struct addrinfo *ai;
    struct sockaddr_in *sin;

#if HAVE_WINSOCK2_H
    int (WSAAPI *win_getaddrinfo)(const char *node, const char *service,
                                  const struct addrinfo *hints,
                                  struct addrinfo **res);
    HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
    win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo");
    if (win_getaddrinfo)
        return win_getaddrinfo(node, service, hints, res);
#endif /* HAVE_WINSOCK2_H */

    *res = NULL;
    sin  = av_mallocz(sizeof(struct sockaddr_in));
    if (!sin)
        return EAI_FAIL;
    sin->sin_family = AF_INET;

    if (node) {
        if (!ff_inet_aton(node, &sin->sin_addr)) {
            if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
                av_free(sin);
                return EAI_FAIL;
            }
            h = gethostbyname(node);
            if (!h) {
                av_free(sin);
                return EAI_FAIL;
            }
            memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
        }
    } else {
        if (hints && (hints->ai_flags & AI_PASSIVE))
            sin->sin_addr.s_addr = INADDR_ANY;
        else
            sin->sin_addr.s_addr = INADDR_LOOPBACK;
    }

    /* Note: getaddrinfo allows service to be a string, which
     * should be looked up using getservbyname. */
    if (service)
        sin->sin_port = htons(atoi(service));

    ai = av_mallocz(sizeof(struct addrinfo));
    if (!ai) {
        av_free(sin);
        return EAI_FAIL;
    }

    *res            = ai;
    ai->ai_family   = AF_INET;
    ai->ai_socktype = hints ? hints->ai_socktype : 0;
    switch (ai->ai_socktype) {
    case SOCK_STREAM:
        ai->ai_protocol = IPPROTO_TCP;
        break;
    case SOCK_DGRAM:
        ai->ai_protocol = IPPROTO_UDP;
        break;
    default:
        ai->ai_protocol = 0;
        break;
    }

    ai->ai_addr    = (struct sockaddr *)sin;
    ai->ai_addrlen = sizeof(struct sockaddr_in);
    if (hints && (hints->ai_flags & AI_CANONNAME))
        ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;

    ai->ai_next = NULL;
    return 0;
}

void ff_freeaddrinfo(struct addrinfo *res)
{
#if HAVE_WINSOCK2_H
    void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res);
    HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
    win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res))
                       GetProcAddress(ws2mod, "freeaddrinfo");
    if (win_freeaddrinfo) {
        win_freeaddrinfo(res);
        return;
    }
#endif /* HAVE_WINSOCK2_H */

    av_free(res->ai_canonname);
    av_free(res->ai_addr);
    av_free(res);
}

int ff_getnameinfo(const struct sockaddr *sa, int salen,
                   char *host, int hostlen,
                   char *serv, int servlen, int flags)
{
    const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;

#if HAVE_WINSOCK2_H
    int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
                                  char *host, DWORD hostlen,
                                  char *serv, DWORD servlen, int flags);
    HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
    win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
    if (win_getnameinfo)
        return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
#endif /* HAVE_WINSOCK2_H */

    if (sa->sa_family != AF_INET)
        return EAI_FAMILY;
    if (!host && !serv)
        return EAI_NONAME;

    if (host && hostlen > 0) {
        struct hostent *ent = NULL;
        uint32_t a;
        if (!(flags & NI_NUMERICHOST))
            ent = gethostbyaddr((const char *)&sin->sin_addr,
                                sizeof(sin->sin_addr), AF_INET);

        if (ent) {
            snprintf(host, hostlen, "%s", ent->h_name);
        } else if (flags & NI_NAMERQD) {
            return EAI_NONAME;
        } else {
            a = ntohl(sin->sin_addr.s_addr);
            snprintf(host, hostlen, "%d.%d.%d.%d",
                     ((a >> 24) & 0xff), ((a >> 16) & 0xff),
                     ((a >>  8) & 0xff),  (a        & 0xff));
        }
    }

    if (serv && servlen > 0) {
        struct servent *ent = NULL;
#if HAVE_GETSERVBYPORT
        if (!(flags & NI_NUMERICSERV))
            ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
#endif /* HAVE_GETSERVBYPORT */

        if (ent)
            snprintf(serv, servlen, "%s", ent->s_name);
        else
            snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
    }

    return 0;
}
#endif /* !HAVE_GETADDRINFO */

#if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H
const char *ff_gai_strerror(int ecode)
{
    switch (ecode) {
    case EAI_AGAIN:
        return "Temporary failure in name resolution";
    case EAI_BADFLAGS:
        return "Invalid flags for ai_flags";
    case EAI_FAIL:
        return "A non-recoverable error occurred";
    case EAI_FAMILY:
        return "The address family was not recognized or the address "
               "length was invalid for the specified family";
    case EAI_MEMORY:
        return "Memory allocation failure";
#if EAI_NODATA != EAI_NONAME
    case EAI_NODATA:
        return "No address associated with hostname";
#endif /* EAI_NODATA != EAI_NONAME */
    case EAI_NONAME:
        return "The name does not resolve for the supplied parameters";
    case EAI_SERVICE:
        return "servname not supported for ai_socktype";
    case EAI_SOCKTYPE:
        return "ai_socktype not supported";
    }

    return "Unknown error";
}
#endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */

int ff_socket_nonblock(int socket, int enable)
{
#if HAVE_WINSOCK2_H
    u_long param = enable;
    return ioctlsocket(socket, FIONBIO, &param);
#else
    if (enable)
        return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
    else
        return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
#endif /* HAVE_WINSOCK2_H */
}

#if !HAVE_POLL_H
int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout)
{
    fd_set read_set;
    fd_set write_set;
    fd_set exception_set;
    nfds_t i;
    int n;
    int rc;

#if HAVE_WINSOCK2_H
    if (numfds >= FD_SETSIZE) {
        errno = EINVAL;
        return -1;
    }
#endif /* HAVE_WINSOCK2_H */

    FD_ZERO(&read_set);
    FD_ZERO(&write_set);
    FD_ZERO(&exception_set);

    n = 0;
    for (i = 0; i < numfds; i++) {
        if (fds[i].fd < 0)
            continue;
#if !HAVE_WINSOCK2_H
        if (fds[i].fd >= FD_SETSIZE) {
            errno = EINVAL;
            return -1;
        }
#endif /* !HAVE_WINSOCK2_H */

        if (fds[i].events & POLLIN)
            FD_SET(fds[i].fd, &read_set);
        if (fds[i].events & POLLOUT)
            FD_SET(fds[i].fd, &write_set);
        if (fds[i].events & POLLERR)
            FD_SET(fds[i].fd, &exception_set);

        if (fds[i].fd >= n)
            n = fds[i].fd + 1;
    }

    if (n == 0)
        /* Hey!? Nothing to poll, in fact!!! */
        return 0;

    if (timeout < 0) {
        rc = select(n, &read_set, &write_set, &exception_set, NULL);
    } else {
        struct timeval tv;
        tv.tv_sec  = timeout / 1000;
        tv.tv_usec = 1000 * (timeout % 1000);
        rc         = select(n, &read_set, &write_set, &exception_set, &tv);
    }

    if (rc < 0)
        return rc;

    for (i = 0; i < numfds; i++) {
        fds[i].revents = 0;

        if (FD_ISSET(fds[i].fd, &read_set))
            fds[i].revents |= POLLIN;
        if (FD_ISSET(fds[i].fd, &write_set))
            fds[i].revents |= POLLOUT;
        if (FD_ISSET(fds[i].fd, &exception_set))
            fds[i].revents |= POLLERR;
    }

    return rc;
}
#endif /* !HAVE_POLL_H */

#endif /* CONFIG_NETWORK */
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* various OS-feature replacement utilities
	3	* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
	4	* copyright (c) 2002 Francois Revol
	5	*
	6	* This file is part of FFmpeg.
	7	*
	8	* FFmpeg is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU Lesser General Public
	10	* License as published by the Free Software Foundation; either
	11	* version 2.1 of the License, or (at your option) any later version.
	12	*
	13	* FFmpeg is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* Lesser General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU Lesser General Public
	19	* License along with FFmpeg; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	21	*/
	22
	23	/* needed by inet_aton() */
	24	#define _SVID_SOURCE
	25
	26	#include "config.h"
	27	#include "avformat.h"
	28	#include "os_support.h"
	29
	30	#if CONFIG_NETWORK
	31	#include <fcntl.h>
	32	#if !HAVE_POLL_H
	33	#if HAVE_SYS_TIME_H
	34	#include <sys/time.h>
	35	#endif /* HAVE_SYS_TIME_H */
	36	#if HAVE_WINSOCK2_H
	37	#include <winsock2.h>
	38	#elif HAVE_SYS_SELECT_H
	39	#include <sys/select.h>
	40	#endif /* HAVE_WINSOCK2_H */
	41	#endif /* !HAVE_POLL_H */
	42
	43	#include "network.h"
	44
	45	#if !HAVE_INET_ATON
	46	#include <stdlib.h>
	47
	48	int ff_inet_aton(const char str, struct in_addr add)
	49	{
	50	unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
	51
	52	if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
	53	return 0;
	54
	55	if (!add1 \|\| (add1 \| add2 \| add3 \| add4) > 255)
	56	return 0;
	57
	58	add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
	59
	60	return 1;
	61	}
	62	#else
	63	int ff_inet_aton(const char str, struct in_addr add)
	64	{
65	return inet_aton(str, add);
66	}
67	#endif /* !HAVE_INET_ATON */
68
69	#if !HAVE_GETADDRINFO
70	int ff_getaddrinfo(const char node, const char service,
71	const struct addrinfo hints, struct addrinfo *res)
72	{
73	struct hostent *h = NULL;
74	struct addrinfo *ai;
75	struct sockaddr_in *sin;
76
77	#if HAVE_WINSOCK2_H
78	int (WSAAPI win_getaddrinfo)(const char node, const char *service,
79	const struct addrinfo *hints,
80	struct addrinfo **res);
81	HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
82	win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo");
83	if (win_getaddrinfo)
84	return win_getaddrinfo(node, service, hints, res);
85	#endif /* HAVE_WINSOCK2_H */
86
87	*res = NULL;
88	sin = av_mallocz(sizeof(struct sockaddr_in));
89	if (!sin)
90	return EAI_FAIL;
91	sin->sin_family = AF_INET;
92
93	if (node) {
94	if (!ff_inet_aton(node, &sin->sin_addr)) {
95	if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
96	av_free(sin);
97	return EAI_FAIL;
98	}
99	h = gethostbyname(node);
100	if (!h) {
101	av_free(sin);
102	return EAI_FAIL;
103	}
104	memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
105	}
106	} else {
107	if (hints && (hints->ai_flags & AI_PASSIVE))
108	sin->sin_addr.s_addr = INADDR_ANY;
109	else
110	sin->sin_addr.s_addr = INADDR_LOOPBACK;
111	}
112
113	/* Note: getaddrinfo allows service to be a string, which
114	* should be looked up using getservbyname. */
115	if (service)
116	sin->sin_port = htons(atoi(service));
117
118	ai = av_mallocz(sizeof(struct addrinfo));
119	if (!ai) {
120	av_free(sin);
121	return EAI_FAIL;
122	}
123
124	*res = ai;
125	ai->ai_family = AF_INET;
126	ai->ai_socktype = hints ? hints->ai_socktype : 0;
127	switch (ai->ai_socktype) {
128	case SOCK_STREAM:
129	ai->ai_protocol = IPPROTO_TCP;
130	break;
131	case SOCK_DGRAM:
132	ai->ai_protocol = IPPROTO_UDP;
133	break;
134	default:
135	ai->ai_protocol = 0;
136	break;
137	}
138
139	ai->ai_addr = (struct sockaddr *)sin;
140	ai->ai_addrlen = sizeof(struct sockaddr_in);
141	if (hints && (hints->ai_flags & AI_CANONNAME))
142	ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
143
144	ai->ai_next = NULL;
145	return 0;
146	}
147
148	void ff_freeaddrinfo(struct addrinfo *res)
149	{
150	#if HAVE_WINSOCK2_H
151	void (WSAAPI win_freeaddrinfo)(struct addrinfo res);
152	HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
153	win_freeaddrinfo = (void (WSAAPI )(struct addrinfo res))
154	GetProcAddress(ws2mod, "freeaddrinfo");
155	if (win_freeaddrinfo) {
156	win_freeaddrinfo(res);
157	return;
158	}
159	#endif /* HAVE_WINSOCK2_H */
160
161	av_free(res->ai_canonname);
162	av_free(res->ai_addr);
163	av_free(res);
164	}
165
166	int ff_getnameinfo(const struct sockaddr *sa, int salen,
167	char *host, int hostlen,
168	char *serv, int servlen, int flags)
169	{
170	const struct sockaddr_in sin = (const struct sockaddr_in )sa;
171
172	#if HAVE_WINSOCK2_H
173	int (WSAAPI win_getnameinfo)(const struct sockaddr sa, socklen_t salen,
174	char *host, DWORD hostlen,
175	char *serv, DWORD servlen, int flags);
176	HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
177	win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
178	if (win_getnameinfo)
179	return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
180	#endif /* HAVE_WINSOCK2_H */
181
182	if (sa->sa_family != AF_INET)
183	return EAI_FAMILY;
184	if (!host && !serv)
185	return EAI_NONAME;
186
187	if (host && hostlen > 0) {
188	struct hostent *ent = NULL;
189	uint32_t a;
190	if (!(flags & NI_NUMERICHOST))
191	ent = gethostbyaddr((const char *)&sin->sin_addr,
192	sizeof(sin->sin_addr), AF_INET);
193
194	if (ent) {
195	snprintf(host, hostlen, "%s", ent->h_name);
196	} else if (flags & NI_NAMERQD) {
197	return EAI_NONAME;
198	} else {
199	a = ntohl(sin->sin_addr.s_addr);
200	snprintf(host, hostlen, "%d.%d.%d.%d",
201	((a >> 24) & 0xff), ((a >> 16) & 0xff),
202	((a >> 8) & 0xff), (a & 0xff));
203	}
204	}
205
206	if (serv && servlen > 0) {
207	struct servent *ent = NULL;
208	#if HAVE_GETSERVBYPORT
209	if (!(flags & NI_NUMERICSERV))
210	ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
211	#endif /* HAVE_GETSERVBYPORT */
212
213	if (ent)
214	snprintf(serv, servlen, "%s", ent->s_name);
215	else
216	snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
217	}
218
219	return 0;
220	}
221	#endif /* !HAVE_GETADDRINFO */
222
223	#if !HAVE_GETADDRINFO \|\| HAVE_WINSOCK2_H
224	const char *ff_gai_strerror(int ecode)
225	{
226	switch (ecode) {
227	case EAI_AGAIN:
228	return "Temporary failure in name resolution";
229	case EAI_BADFLAGS:
230	return "Invalid flags for ai_flags";
231	case EAI_FAIL:
232	return "A non-recoverable error occurred";
233	case EAI_FAMILY:
234	return "The address family was not recognized or the address "
235	"length was invalid for the specified family";
236	case EAI_MEMORY:
237	return "Memory allocation failure";
238	#if EAI_NODATA != EAI_NONAME
239	case EAI_NODATA:
240	return "No address associated with hostname";
241	#endif /* EAI_NODATA != EAI_NONAME */
242	case EAI_NONAME:
243	return "The name does not resolve for the supplied parameters";
244	case EAI_SERVICE:
245	return "servname not supported for ai_socktype";
246	case EAI_SOCKTYPE:
247	return "ai_socktype not supported";
248	}
249
250	return "Unknown error";
251	}
252	#endif /* !HAVE_GETADDRINFO \|\| HAVE_WINSOCK2_H */
253
254	int ff_socket_nonblock(int socket, int enable)
255	{
256	#if HAVE_WINSOCK2_H
257	u_long param = enable;
258	return ioctlsocket(socket, FIONBIO, &param);
259	#else
260	if (enable)
261	return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) \| O_NONBLOCK);
262	else
263	return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
264	#endif /* HAVE_WINSOCK2_H */
265	}
266
267	#if !HAVE_POLL_H
268	int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout)
269	{
270	fd_set read_set;
271	fd_set write_set;
272	fd_set exception_set;
273	nfds_t i;
274	int n;
275	int rc;
276
277	#if HAVE_WINSOCK2_H
278	if (numfds >= FD_SETSIZE) {
279	errno = EINVAL;
280	return -1;
281	}
282	#endif /* HAVE_WINSOCK2_H */
283
284	FD_ZERO(&read_set);
285	FD_ZERO(&write_set);
286	FD_ZERO(&exception_set);
287
288	n = 0;
289	for (i = 0; i < numfds; i++) {
290	if (fds[i].fd < 0)
291	continue;
292	#if !HAVE_WINSOCK2_H
293	if (fds[i].fd >= FD_SETSIZE) {
294	errno = EINVAL;
295	return -1;
296	}
297	#endif /* !HAVE_WINSOCK2_H */
298
299	if (fds[i].events & POLLIN)
300	FD_SET(fds[i].fd, &read_set);
301	if (fds[i].events & POLLOUT)
302	FD_SET(fds[i].fd, &write_set);
303	if (fds[i].events & POLLERR)
304	FD_SET(fds[i].fd, &exception_set);
305
306	if (fds[i].fd >= n)
307	n = fds[i].fd + 1;
308	}
309
310	if (n == 0)
311	/* Hey!? Nothing to poll, in fact!!! */
312	return 0;
313
314	if (timeout < 0) {
315	rc = select(n, &read_set, &write_set, &exception_set, NULL);
316	} else {
317	struct timeval tv;
318	tv.tv_sec = timeout / 1000;
319	tv.tv_usec = 1000 * (timeout % 1000);
320	rc = select(n, &read_set, &write_set, &exception_set, &tv);
321	}
322
323	if (rc < 0)
324	return rc;
325
326	for (i = 0; i < numfds; i++) {
327	fds[i].revents = 0;
328
329	if (FD_ISSET(fds[i].fd, &read_set))
330	fds[i].revents \|= POLLIN;
331	if (FD_ISSET(fds[i].fd, &write_set))
332	fds[i].revents \|= POLLOUT;
333	if (FD_ISSET(fds[i].fd, &exception_set))
334	fds[i].revents \|= POLLERR;
335	}
336
337	return rc;
338	}
339	#endif /* !HAVE_POLL_H */
340
341	#endif /* CONFIG_NETWORK */