diff options
Diffstat (limited to 'ext/socket/getaddrinfo.c')
-rw-r--r-- | ext/socket/getaddrinfo.c | 897 |
1 files changed, 448 insertions, 449 deletions
diff --git a/ext/socket/getaddrinfo.c b/ext/socket/getaddrinfo.c index ce6dc40478..bf0d90129f 100644 --- a/ext/socket/getaddrinfo.c +++ b/ext/socket/getaddrinfo.c @@ -98,42 +98,42 @@ static struct in6_addr faith_prefix = IN6ADDR_ANY_INIT; static const char in_addrany[] = { 0, 0, 0, 0 }; static const char in6_addrany[] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; static const char in_loopback[] = { 127, 0, 0, 1 }; static const char in6_loopback[] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; struct sockinet { - u_char si_len; - u_char si_family; - u_short si_port; + u_char si_len; + u_char si_family; + u_short si_port; }; static const struct afd { - int a_af; - int a_addrlen; - int a_socklen; - int a_off; - const char *a_addrany; - const char *a_loopback; + int a_af; + int a_addrlen; + int a_socklen; + int a_off; + const char *a_addrany; + const char *a_loopback; } afdl [] = { #ifdef INET6 #define N_INET6 0 - {PF_INET6, sizeof(struct in6_addr), - sizeof(struct sockaddr_in6), - offsetof(struct sockaddr_in6, sin6_addr), - in6_addrany, in6_loopback}, + {PF_INET6, sizeof(struct in6_addr), + sizeof(struct sockaddr_in6), + offsetof(struct sockaddr_in6, sin6_addr), + in6_addrany, in6_loopback}, #define N_INET 1 #else #define N_INET 0 #endif - {PF_INET, sizeof(struct in_addr), - sizeof(struct sockaddr_in), - offsetof(struct sockaddr_in, sin_addr), - in_addrany, in_loopback}, - {0, 0, 0, 0, NULL, NULL}, + {PF_INET, sizeof(struct in_addr), + sizeof(struct sockaddr_in), + offsetof(struct sockaddr_in, sin_addr), + in_addrany, in_loopback}, + {0, 0, 0, 0, NULL, NULL}, }; #ifdef INET6 @@ -143,58 +143,58 @@ static const struct afd { #endif static int get_name __P((const char *, const struct afd *, - struct addrinfo **, char *, struct addrinfo *, - int)); + struct addrinfo **, char *, struct addrinfo *, + int)); static int get_addr __P((const char *, int, struct addrinfo **, - struct addrinfo *, int)); + struct addrinfo *, int)); static int str_isnumber __P((const char *)); #ifndef HAVE_GAI_STRERROR static const char *const ai_errlist[] = { - "success.", - "address family for hostname not supported.", /* EAI_ADDRFAMILY */ - "temporary failure in name resolution.", /* EAI_AGAIN */ - "invalid value for ai_flags.", /* EAI_BADFLAGS */ - "non-recoverable failure in name resolution.", /* EAI_FAIL */ - "ai_family not supported.", /* EAI_FAMILY */ - "memory allocation failure.", /* EAI_MEMORY */ - "no address associated with hostname.", /* EAI_NODATA */ - "hostname nor servname provided, or not known.",/* EAI_NONAME */ - "servname not supported for ai_socktype.", /* EAI_SERVICE */ - "ai_socktype not supported.", /* EAI_SOCKTYPE */ - "system error returned in errno.", /* EAI_SYSTEM */ - "invalid value for hints.", /* EAI_BADHINTS */ - "resolved protocol is unknown.", /* EAI_PROTOCOL */ - "unknown error.", /* EAI_MAX */ + "success.", + "address family for hostname not supported.", /* EAI_ADDRFAMILY */ + "temporary failure in name resolution.", /* EAI_AGAIN */ + "invalid value for ai_flags.", /* EAI_BADFLAGS */ + "non-recoverable failure in name resolution.", /* EAI_FAIL */ + "ai_family not supported.", /* EAI_FAMILY */ + "memory allocation failure.", /* EAI_MEMORY */ + "no address associated with hostname.", /* EAI_NODATA */ + "hostname nor servname provided, or not known.",/* EAI_NONAME */ + "servname not supported for ai_socktype.", /* EAI_SERVICE */ + "ai_socktype not supported.", /* EAI_SOCKTYPE */ + "system error returned in errno.", /* EAI_SYSTEM */ + "invalid value for hints.", /* EAI_BADHINTS */ + "resolved protocol is unknown.", /* EAI_PROTOCOL */ + "unknown error.", /* EAI_MAX */ }; #endif #define GET_CANONNAME(ai, str) \ if (pai->ai_flags & AI_CANONNAME) {\ - if (((ai)->ai_canonname = (char *)malloc(strlen(str) + 1)) != NULL) {\ - strcpy((ai)->ai_canonname, (str));\ - } else {\ - error = EAI_MEMORY;\ - goto free;\ - }\ + if (((ai)->ai_canonname = (char *)malloc(strlen(str) + 1)) != NULL) {\ + strcpy((ai)->ai_canonname, (str));\ + } else {\ + error = EAI_MEMORY;\ + goto free;\ + }\ } #define GET_AI(ai, afd, addr, port) {\ - char *p;\ - if (((ai) = (struct addrinfo *)malloc(sizeof(struct addrinfo) +\ - ((afd)->a_socklen)))\ - == NULL) {\ - error = EAI_MEMORY;\ - goto free;\ - }\ - memcpy((ai), pai, sizeof(struct addrinfo));\ - (ai)->ai_addr = (struct sockaddr *)((ai) + 1);\ - (ai)->ai_family = (afd)->a_af;\ - (ai)->ai_addrlen = (afd)->a_socklen;\ - INIT_SOCKADDR((ai)->ai_addr, (afd)->a_af, (afd)->a_socklen);\ - ((struct sockinet *)(ai)->ai_addr)->si_port = (port);\ - p = (char *)((ai)->ai_addr);\ - memcpy(p + (afd)->a_off, (addr), (afd)->a_addrlen);\ + char *p;\ + if (((ai) = (struct addrinfo *)malloc(sizeof(struct addrinfo) +\ + ((afd)->a_socklen)))\ + == NULL) {\ + error = EAI_MEMORY;\ + goto free;\ + }\ + memcpy((ai), pai, sizeof(struct addrinfo));\ + (ai)->ai_addr = (struct sockaddr *)((ai) + 1);\ + (ai)->ai_family = (afd)->a_af;\ + (ai)->ai_addrlen = (afd)->a_socklen;\ + INIT_SOCKADDR((ai)->ai_addr, (afd)->a_af, (afd)->a_socklen);\ + ((struct sockinet *)(ai)->ai_addr)->si_port = (port);\ + p = (char *)((ai)->ai_addr);\ + memcpy(p + (afd)->a_off, (addr), (afd)->a_addrlen);\ } #define ERR(err) { error = (err); goto bad; } @@ -206,36 +206,35 @@ const char * gai_strerror(int ecode) { - if (ecode < 0 || ecode > EAI_MAX) - ecode = EAI_MAX; - return (char *)ai_errlist[ecode]; + if (ecode < 0 || ecode > EAI_MAX) + ecode = EAI_MAX; + return (char *)ai_errlist[ecode]; } #endif void freeaddrinfo(struct addrinfo *ai) { - struct addrinfo *next; - - do { - next = ai->ai_next; - if (ai->ai_canonname) - free(ai->ai_canonname); - /* no need to free(ai->ai_addr) */ - free(ai); - } while ((ai = next) != NULL); + struct addrinfo *next; + + do { + next = ai->ai_next; + free(ai->ai_canonname); + /* no need to free(ai->ai_addr) */ + free(ai); + } while ((ai = next) != NULL); } static int str_isnumber(const char *p) { - char *q = (char *)p; - while (*q) { - if (! isdigit(*q)) - return NO; - q++; - } - return YES; + char *q = (char *)p; + while (*q) { + if (! isdigit(*q)) + return NO; + q++; + } + return YES; } #ifndef HAVE_INET_PTON @@ -243,435 +242,435 @@ str_isnumber(const char *p) static int inet_pton(int af, const char *hostname, void *pton) { - struct in_addr in; + struct in_addr in; #ifdef HAVE_INET_ATON - if (!inet_aton(hostname, &in)) - return 0; + if (!inet_aton(hostname, &in)) + return 0; #else - int d1, d2, d3, d4; - char ch; - - if (sscanf(hostname, "%d.%d.%d.%d%c", &d1, &d2, &d3, &d4, &ch) == 4 && - 0 <= d1 && d1 <= 255 && 0 <= d2 && d2 <= 255 && - 0 <= d3 && d3 <= 255 && 0 <= d4 && d4 <= 255) { - in.s_addr = htonl( - ((long) d1 << 24) | ((long) d2 << 16) | - ((long) d3 << 8) | ((long) d4 << 0)); - } - else { - return 0; - } -#endif - memcpy(pton, &in, sizeof(in)); - return 1; + int d1, d2, d3, d4; + char ch; + + if (sscanf(hostname, "%d.%d.%d.%d%c", &d1, &d2, &d3, &d4, &ch) == 4 && + 0 <= d1 && d1 <= 255 && 0 <= d2 && d2 <= 255 && + 0 <= d3 && d3 <= 255 && 0 <= d4 && d4 <= 255) { + in.s_addr = htonl( + ((long) d1 << 24) | ((long) d2 << 16) | + ((long) d3 << 8) | ((long) d4 << 0)); + } + else { + return 0; + } +#endif + memcpy(pton, &in, sizeof(in)); + return 1; } #endif int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res) { - struct addrinfo sentinel; - struct addrinfo *top = NULL; - struct addrinfo *cur; - int i, error = 0; - char pton[PTON_MAX]; - struct addrinfo ai; - struct addrinfo *pai; - u_short port; + struct addrinfo sentinel; + struct addrinfo *top = NULL; + struct addrinfo *cur; + int i, error = 0; + char pton[PTON_MAX]; + struct addrinfo ai; + struct addrinfo *pai; + u_short port; #ifdef FAITH - static int firsttime = 1; - - if (firsttime) { - /* translator hack */ - { - char *q = getenv("GAI"); - if (q && inet_pton(AF_INET6, q, &faith_prefix) == 1) - translate = YES; - } - firsttime = 0; - } -#endif - - /* initialize file static vars */ - sentinel.ai_next = NULL; - cur = &sentinel; - pai = &ai; - pai->ai_flags = 0; - pai->ai_family = PF_UNSPEC; - pai->ai_socktype = ANY; - pai->ai_protocol = ANY; - pai->ai_addrlen = 0; - pai->ai_canonname = NULL; - pai->ai_addr = NULL; - pai->ai_next = NULL; - port = ANY; - - if (hostname == NULL && servname == NULL) - return EAI_NONAME; - if (hints) { - /* error check for hints */ - if (hints->ai_addrlen || hints->ai_canonname || - hints->ai_addr || hints->ai_next) - ERR(EAI_BADHINTS); /* xxx */ - if (hints->ai_flags & ~AI_MASK) - ERR(EAI_BADFLAGS); - switch (hints->ai_family) { - case PF_UNSPEC: - case PF_INET: + static int firsttime = 1; + + if (firsttime) { + /* translator hack */ + { + char *q = getenv("GAI"); + if (q && inet_pton(AF_INET6, q, &faith_prefix) == 1) + translate = YES; + } + firsttime = 0; + } +#endif + + /* initialize file static vars */ + sentinel.ai_next = NULL; + cur = &sentinel; + pai = &ai; + pai->ai_flags = 0; + pai->ai_family = PF_UNSPEC; + pai->ai_socktype = ANY; + pai->ai_protocol = ANY; + pai->ai_addrlen = 0; + pai->ai_canonname = NULL; + pai->ai_addr = NULL; + pai->ai_next = NULL; + port = ANY; + + if (hostname == NULL && servname == NULL) + return EAI_NONAME; + if (hints) { + /* error check for hints */ + if (hints->ai_addrlen || hints->ai_canonname || + hints->ai_addr || hints->ai_next) + ERR(EAI_BADHINTS); /* xxx */ + if (hints->ai_flags & ~AI_MASK) + ERR(EAI_BADFLAGS); + switch (hints->ai_family) { + case PF_UNSPEC: + case PF_INET: #ifdef INET6 - case PF_INET6: -#endif - break; - default: - ERR(EAI_FAMILY); - } - memcpy(pai, hints, sizeof(*pai)); - switch (pai->ai_socktype) { - case ANY: - switch (pai->ai_protocol) { - case ANY: - break; - case IPPROTO_UDP: - pai->ai_socktype = SOCK_DGRAM; - break; - case IPPROTO_TCP: - pai->ai_socktype = SOCK_STREAM; - break; - default: + case PF_INET6: +#endif + break; + default: + ERR(EAI_FAMILY); + } + memcpy(pai, hints, sizeof(*pai)); + switch (pai->ai_socktype) { + case ANY: + switch (pai->ai_protocol) { + case ANY: + break; + case IPPROTO_UDP: + pai->ai_socktype = SOCK_DGRAM; + break; + case IPPROTO_TCP: + pai->ai_socktype = SOCK_STREAM; + break; + default: #if defined(SOCK_RAW) - pai->ai_socktype = SOCK_RAW; + pai->ai_socktype = SOCK_RAW; #endif - break; - } - break; + break; + } + break; #if defined(SOCK_RAW) - case SOCK_RAW: - break; -#endif - case SOCK_DGRAM: - if (pai->ai_protocol != IPPROTO_UDP && - pai->ai_protocol != ANY) - ERR(EAI_BADHINTS); /*xxx*/ - pai->ai_protocol = IPPROTO_UDP; - break; - case SOCK_STREAM: - if (pai->ai_protocol != IPPROTO_TCP && - pai->ai_protocol != ANY) - ERR(EAI_BADHINTS); /*xxx*/ - pai->ai_protocol = IPPROTO_TCP; - break; - default: - ERR(EAI_SOCKTYPE); - break; - } - } - - /* - * service port - */ - if (servname) { - if (str_isnumber(servname)) { - if (pai->ai_socktype == ANY) { - /* caller accept *ANY* socktype */ - pai->ai_socktype = SOCK_DGRAM; - pai->ai_protocol = IPPROTO_UDP; - } - port = htons((unsigned short)atoi(servname)); + case SOCK_RAW: + break; +#endif + case SOCK_DGRAM: + if (pai->ai_protocol != IPPROTO_UDP && + pai->ai_protocol != ANY) + ERR(EAI_BADHINTS); /*xxx*/ + pai->ai_protocol = IPPROTO_UDP; + break; + case SOCK_STREAM: + if (pai->ai_protocol != IPPROTO_TCP && + pai->ai_protocol != ANY) + ERR(EAI_BADHINTS); /*xxx*/ + pai->ai_protocol = IPPROTO_TCP; + break; + default: + ERR(EAI_SOCKTYPE); + break; + } + } + + /* + * service port + */ + if (servname) { + if (str_isnumber(servname)) { + if (pai->ai_socktype == ANY) { + /* caller accept *ANY* socktype */ + pai->ai_socktype = SOCK_DGRAM; + pai->ai_protocol = IPPROTO_UDP; + } + port = htons((unsigned short)atoi(servname)); } else if (pai->ai_flags & AI_NUMERICSERV) { ERR(EAI_NONAME); - } else { - struct servent *sp; - const char *proto; - - proto = NULL; - switch (pai->ai_socktype) { - case ANY: - proto = NULL; - break; - case SOCK_DGRAM: - proto = "udp"; - break; - case SOCK_STREAM: - proto = "tcp"; - break; - default: - fprintf(stderr, "panic!\n"); - break; - } - if ((sp = getservbyname((char*)servname, proto)) == NULL) - ERR(EAI_SERVICE); - port = sp->s_port; - if (pai->ai_socktype == ANY) - if (strcmp(sp->s_proto, "udp") == 0) { - pai->ai_socktype = SOCK_DGRAM; - pai->ai_protocol = IPPROTO_UDP; - } else if (strcmp(sp->s_proto, "tcp") == 0) { - pai->ai_socktype = SOCK_STREAM; - pai->ai_protocol = IPPROTO_TCP; - } else - ERR(EAI_PROTOCOL); /*xxx*/ - } - } - - /* - * hostname == NULL. - * passive socket -> anyaddr (0.0.0.0 or ::) - * non-passive socket -> localhost (127.0.0.1 or ::1) - */ - if (hostname == NULL) { - const struct afd *afd; - int s; - - for (afd = &afdl[0]; afd->a_af; afd++) { - if (!(pai->ai_family == PF_UNSPEC - || pai->ai_family == afd->a_af)) { - continue; - } - - /* - * filter out AFs that are not supported by the kernel - * XXX errno? - */ - s = socket(afd->a_af, SOCK_DGRAM, 0); - if (s < 0) - continue; - - close(s); - - if (pai->ai_flags & AI_PASSIVE) { - GET_AI(cur->ai_next, afd, afd->a_addrany, port); - /* xxx meaningless? - * GET_CANONNAME(cur->ai_next, "anyaddr"); - */ - } else { - GET_AI(cur->ai_next, afd, afd->a_loopback, - port); - /* xxx meaningless? - * GET_CANONNAME(cur->ai_next, "localhost"); - */ - } - cur = cur->ai_next; - } - top = sentinel.ai_next; - if (top) - goto good; - else - ERR(EAI_FAMILY); - } - - /* hostname as numeric name */ - for (i = 0; afdl[i].a_af; i++) { - if (inet_pton(afdl[i].a_af, hostname, pton)) { - u_long v4a; + } else { + struct servent *sp; + const char *proto; + + proto = NULL; + switch (pai->ai_socktype) { + case ANY: + proto = NULL; + break; + case SOCK_DGRAM: + proto = "udp"; + break; + case SOCK_STREAM: + proto = "tcp"; + break; + default: + fprintf(stderr, "panic!\n"); + break; + } + if ((sp = getservbyname((char*)servname, proto)) == NULL) + ERR(EAI_SERVICE); + port = sp->s_port; + if (pai->ai_socktype == ANY) + if (strcmp(sp->s_proto, "udp") == 0) { + pai->ai_socktype = SOCK_DGRAM; + pai->ai_protocol = IPPROTO_UDP; + } else if (strcmp(sp->s_proto, "tcp") == 0) { + pai->ai_socktype = SOCK_STREAM; + pai->ai_protocol = IPPROTO_TCP; + } else + ERR(EAI_PROTOCOL); /*xxx*/ + } + } + + /* + * hostname == NULL. + * passive socket -> anyaddr (0.0.0.0 or ::) + * non-passive socket -> localhost (127.0.0.1 or ::1) + */ + if (hostname == NULL) { + const struct afd *afd; + int s; + + for (afd = &afdl[0]; afd->a_af; afd++) { + if (!(pai->ai_family == PF_UNSPEC + || pai->ai_family == afd->a_af)) { + continue; + } + + /* + * filter out AFs that are not supported by the kernel + * XXX errno? + */ + s = socket(afd->a_af, SOCK_DGRAM, 0); + if (s < 0) + continue; + + close(s); + + if (pai->ai_flags & AI_PASSIVE) { + GET_AI(cur->ai_next, afd, afd->a_addrany, port); + /* xxx meaningless? + * GET_CANONNAME(cur->ai_next, "anyaddr"); + */ + } else { + GET_AI(cur->ai_next, afd, afd->a_loopback, + port); + /* xxx meaningless? + * GET_CANONNAME(cur->ai_next, "localhost"); + */ + } + cur = cur->ai_next; + } + top = sentinel.ai_next; + if (top) + goto good; + else + ERR(EAI_FAMILY); + } + + /* hostname as numeric name */ + for (i = 0; afdl[i].a_af; i++) { + if (inet_pton(afdl[i].a_af, hostname, pton)) { + u_long v4a; #ifdef INET6 - u_char pfx; -#endif - - switch (afdl[i].a_af) { - case AF_INET: - v4a = ((struct in_addr *)pton)->s_addr; - if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a)) - pai->ai_flags &= ~AI_CANONNAME; - v4a >>= IN_CLASSA_NSHIFT; - if (v4a == 0 || v4a == IN_LOOPBACKNET) - pai->ai_flags &= ~AI_CANONNAME; - break; + u_char pfx; +#endif + + switch (afdl[i].a_af) { + case AF_INET: + v4a = ((struct in_addr *)pton)->s_addr; + if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a)) + pai->ai_flags &= ~AI_CANONNAME; + v4a >>= IN_CLASSA_NSHIFT; + if (v4a == 0 || v4a == IN_LOOPBACKNET) + pai->ai_flags &= ~AI_CANONNAME; + break; #ifdef INET6 - case AF_INET6: - pfx = ((struct in6_addr *)pton)->s6_addr[0]; - if (pfx == 0 || pfx == 0xfe || pfx == 0xff) - pai->ai_flags &= ~AI_CANONNAME; - break; -#endif - } - - if (pai->ai_family == afdl[i].a_af || - pai->ai_family == PF_UNSPEC) { - if (! (pai->ai_flags & AI_CANONNAME)) { - GET_AI(top, &afdl[i], pton, port); - goto good; - } - /* - * if AI_CANONNAME and if reverse lookup - * fail, return ai anyway to pacify - * calling application. - * - * XXX getaddrinfo() is a name->address - * translation function, and it looks strange - * that we do addr->name translation here. - */ - get_name(pton, &afdl[i], &top, pton, pai, port); - goto good; - } else - ERR(EAI_FAMILY); /*xxx*/ - } - } - - if (pai->ai_flags & AI_NUMERICHOST) - ERR(EAI_NONAME); - - /* hostname as alphabetical name */ - error = get_addr(hostname, pai->ai_family, &top, pai, port); - if (error == 0) { - if (top) { + case AF_INET6: + pfx = ((struct in6_addr *)pton)->s6_addr[0]; + if (pfx == 0 || pfx == 0xfe || pfx == 0xff) + pai->ai_flags &= ~AI_CANONNAME; + break; +#endif + } + + if (pai->ai_family == afdl[i].a_af || + pai->ai_family == PF_UNSPEC) { + if (! (pai->ai_flags & AI_CANONNAME)) { + GET_AI(top, &afdl[i], pton, port); + goto good; + } + /* + * if AI_CANONNAME and if reverse lookup + * fail, return ai anyway to pacify + * calling application. + * + * XXX getaddrinfo() is a name->address + * translation function, and it looks strange + * that we do addr->name translation here. + */ + get_name(pton, &afdl[i], &top, pton, pai, port); + goto good; + } else + ERR(EAI_FAMILY); /*xxx*/ + } + } + + if (pai->ai_flags & AI_NUMERICHOST) + ERR(EAI_NONAME); + + /* hostname as alphabetical name */ + error = get_addr(hostname, pai->ai_family, &top, pai, port); + if (error == 0) { + if (top) { good: - *res = top; - return SUCCESS; - } else - error = EAI_FAIL; - } + *res = top; + return SUCCESS; + } else + error = EAI_FAIL; + } free: - if (top) - freeaddrinfo(top); + if (top) + freeaddrinfo(top); bad: - *res = NULL; - return error; + *res = NULL; + return error; } static int get_name(const char *addr, const struct afd *afd, struct addrinfo **res, char *numaddr, struct addrinfo *pai, int port0) { - u_short port = port0 & 0xffff; - struct hostent *hp; - struct addrinfo *cur; - int error = 0; + u_short port = port0 & 0xffff; + struct hostent *hp; + struct addrinfo *cur; + int error = 0; #ifdef INET6 - int h_error; + int h_error; #endif #ifdef INET6 - hp = getipnodebyaddr(addr, afd->a_addrlen, afd->a_af, &h_error); + hp = getipnodebyaddr(addr, afd->a_addrlen, afd->a_af, &h_error); #else - hp = gethostbyaddr((char*)addr, afd->a_addrlen, AF_INET); + hp = gethostbyaddr((char*)addr, afd->a_addrlen, AF_INET); #endif - if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) { - GET_AI(cur, afd, hp->h_addr_list[0], port); - GET_CANONNAME(cur, hp->h_name); - } else - GET_AI(cur, afd, numaddr, port); + if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) { + GET_AI(cur, afd, hp->h_addr_list[0], port); + GET_CANONNAME(cur, hp->h_name); + } else + GET_AI(cur, afd, numaddr, port); #ifdef INET6 - if (hp) - freehostent(hp); + if (hp) + freehostent(hp); #endif - *res = cur; - return SUCCESS; + *res = cur; + return SUCCESS; free: - if (cur) - freeaddrinfo(cur); + if (cur) + freeaddrinfo(cur); #ifdef INET6 - if (hp) - freehostent(hp); + if (hp) + freehostent(hp); #endif /* bad: */ - *res = NULL; - return error; + *res = NULL; + return error; } static int get_addr(const char *hostname, int af, struct addrinfo **res, struct addrinfo *pai, int port0) { - u_short port = port0 & 0xffff; - struct addrinfo sentinel; - struct hostent *hp; - struct addrinfo *top, *cur; - const struct afd *afd; - int i, error = 0, h_error; - char *ap; - - top = NULL; - sentinel.ai_next = NULL; - cur = &sentinel; + u_short port = port0 & 0xffff; + struct addrinfo sentinel; + struct hostent *hp; + struct addrinfo *top, *cur; + const struct afd *afd; + int i, error = 0, h_error; + char *ap; + + top = NULL; + sentinel.ai_next = NULL; + cur = &sentinel; #ifdef INET6 - if (af == AF_UNSPEC) { - hp = getipnodebyname(hostname, AF_INET6, - AI_ADDRCONFIG|AI_ALL|AI_V4MAPPED, &h_error); - } else - hp = getipnodebyname(hostname, af, AI_ADDRCONFIG, &h_error); + if (af == AF_UNSPEC) { + hp = getipnodebyname(hostname, AF_INET6, + AI_ADDRCONFIG|AI_ALL|AI_V4MAPPED, &h_error); + } else + hp = getipnodebyname(hostname, af, AI_ADDRCONFIG, &h_error); #else - if (strlen(hostname) >= NI_MAXHOST) ERR(EAI_NODATA); - hp = gethostbyname((char*)hostname); - h_error = h_errno; -#endif - if (hp == NULL) { - switch (h_error) { - case HOST_NOT_FOUND: - case NO_DATA: - error = EAI_NODATA; - break; - case TRY_AGAIN: - error = EAI_AGAIN; - break; - case NO_RECOVERY: - default: - error = EAI_FAIL; - break; - } - goto bad; - } - - if ((hp->h_name == NULL) || (hp->h_name[0] == 0) || - (hp->h_addr_list[0] == NULL)) - ERR(EAI_FAIL); - - for (i = 0; (ap = hp->h_addr_list[i]) != NULL; i++) { - switch (af) { + if (strlen(hostname) >= NI_MAXHOST) ERR(EAI_NODATA); + hp = gethostbyname((char*)hostname); + h_error = h_errno; +#endif + if (hp == NULL) { + switch (h_error) { + case HOST_NOT_FOUND: + case NO_DATA: + error = EAI_NODATA; + break; + case TRY_AGAIN: + error = EAI_AGAIN; + break; + case NO_RECOVERY: + default: + error = EAI_FAIL; + break; + } + goto bad; + } + + if ((hp->h_name == NULL) || (hp->h_name[0] == 0) || + (hp->h_addr_list[0] == NULL)) + ERR(EAI_FAIL); + + for (i = 0; (ap = hp->h_addr_list[i]) != NULL; i++) { + switch (af) { #ifdef INET6 - case AF_INET6: - afd = &afdl[N_INET6]; - break; + case AF_INET6: + afd = &afdl[N_INET6]; + break; #endif #ifndef INET6 - default: /* AF_UNSPEC */ + default: /* AF_UNSPEC */ #endif - case AF_INET: - afd = &afdl[N_INET]; - break; + case AF_INET: + afd = &afdl[N_INET]; + break; #ifdef INET6 - default: /* AF_UNSPEC */ - if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)ap)) { - ap += sizeof(struct in6_addr) - - sizeof(struct in_addr); - afd = &afdl[N_INET]; - } else - afd = &afdl[N_INET6]; - break; -#endif - } + default: /* AF_UNSPEC */ + if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)ap)) { + ap += sizeof(struct in6_addr) - + sizeof(struct in_addr); + afd = &afdl[N_INET]; + } else + afd = &afdl[N_INET6]; + break; +#endif + } #ifdef FAITH - if (translate && afd->a_af == AF_INET) { - struct in6_addr *in6; - - GET_AI(cur->ai_next, &afdl[N_INET6], ap, port); - in6 = &((struct sockaddr_in6 *)cur->ai_next->ai_addr)->sin6_addr; - memcpy(&in6->s6_addr, &faith_prefix, - sizeof(struct in6_addr) - sizeof(struct in_addr)); - memcpy(&in6->s6_addr + sizeof(struct in_addr), ap, - sizeof(struct in_addr)); - } else + if (translate && afd->a_af == AF_INET) { + struct in6_addr *in6; + + GET_AI(cur->ai_next, &afdl[N_INET6], ap, port); + in6 = &((struct sockaddr_in6 *)cur->ai_next->ai_addr)->sin6_addr; + memcpy(&in6->s6_addr, &faith_prefix, + sizeof(struct in6_addr) - sizeof(struct in_addr)); + memcpy(&in6->s6_addr + sizeof(struct in_addr), ap, + sizeof(struct in_addr)); + } else #endif /* FAITH */ - GET_AI(cur->ai_next, afd, ap, port); - if (cur == &sentinel) { - top = cur->ai_next; - GET_CANONNAME(top, hp->h_name); - } - cur = cur->ai_next; - } + GET_AI(cur->ai_next, afd, ap, port); + if (cur == &sentinel) { + top = cur->ai_next; + GET_CANONNAME(top, hp->h_name); + } + cur = cur->ai_next; + } #ifdef INET6 - freehostent(hp); + freehostent(hp); #endif - *res = top; - return SUCCESS; + *res = top; + return SUCCESS; free: - if (top) - freeaddrinfo(top); + if (top) + freeaddrinfo(top); #ifdef INET6 - if (hp) - freehostent(hp); + if (hp) + freehostent(hp); #endif bad: - *res = NULL; - return error; + *res = NULL; + return error; } |