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Provide fallback implementations of getaddrinfo() and freeaddrinfo().

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Patch by Martin Storsjö <$firstname()$firstname,st>.

Originally committed as revision 21145 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Martin Storsjö 2010-01-11 17:27:07 +00:00 committed by Ronald S. Bultje
parent c001861351
commit fa053ca725
2 changed files with 108 additions and 0 deletions
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38
libavformat/network.h
View File

@ -68,4 +68,42 @@ static inline void ff_network_close(void)
int inet_aton (const char * str, struct in_addr * add);
#endif
#if !HAVE_STRUCT_ADDRINFO
struct addrinfo {
int ai_flags;
int ai_family;
int ai_socktype;
int ai_protocol;
int ai_addrlen;
struct sockaddr *ai_addr;
char *ai_canonname;
struct addrinfo *ai_next;
};
#endif
/* getaddrinfo constants */
#ifndef EAI_FAIL
#define EAI_FAIL 4
#endif
#ifndef AI_PASSIVE
#define AI_PASSIVE 1
#endif
#ifndef AI_CANONNAME
#define AI_CANONNAME 2
#endif
#ifndef AI_NUMERICHOST
#define AI_NUMERICHOST 4
#endif
#if !HAVE_GETADDRINFO
int ff_getaddrinfo(const char *node, const char *service,
const struct addrinfo *hints, struct addrinfo **res);
void ff_freeaddrinfo(struct addrinfo *res);
#define getaddrinfo ff_getaddrinfo
#define freeaddrinfo ff_freeaddrinfo
#endif
#endif /* AVFORMAT_NETWORK_H */

70
libavformat/os_support.c
View File

@ -60,6 +60,76 @@ int inet_aton (const char * str, struct in_addr * 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;
sin = av_mallocz(sizeof(struct sockaddr_in));
if (!sin)
return EAI_FAIL;
sin->sin_family = AF_INET;
if (node) {
if (!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)
{
av_free(res->ai_canonname);
av_free(res->ai_addr);
av_free(res);
}
#endif
/* resolve host with also IP address parsing */
int resolve_host(struct in_addr *sin_addr, const char *hostname)
{