diff options
author | Mike Frysinger <vapier@gentoo.org> | 2007-09-28 20:39:18 +0000 |
---|---|---|
committer | Mike Frysinger <vapier@gentoo.org> | 2007-09-28 20:39:18 +0000 |
commit | 283dc2c2d0a89fae1f1ac39c51df2e2e48dd616a (patch) | |
tree | b74c8a49f8d4f510bc272e2241f513884d7520b9 | |
parent | eb0847057d25cffba97cf04f60b8df54bf175dd9 (diff) |
cleanup code style
-rw-r--r-- | libc/inet/resolv.c | 624 |
1 files changed, 301 insertions, 323 deletions
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c index 5d3e2d871..6634d594b 100644 --- a/libc/inet/resolv.c +++ b/libc/inet/resolv.c @@ -275,9 +275,9 @@ struct resolv_answer { }; enum etc_hosts_action { - GET_HOSTS_BYNAME = 0, - GETHOSTENT, - GET_HOSTS_BYADDR, + GET_HOSTS_BYNAME = 0, + GETHOSTENT, + GET_HOSTS_BYADDR, }; /* function prototypes */ @@ -418,7 +418,7 @@ int attribute_hidden __decode_dotted(const unsigned char * const data, int offse if (!data) return -1; - while ((l=data[offset++])) { + while ((l = data[offset++])) { if (measure) total++; if ((l & 0xc0) == (0xc0)) { @@ -446,9 +446,8 @@ int attribute_hidden __decode_dotted(const unsigned char * const data, int offse } /* The null byte must be counted too */ - if (measure) { + if (measure) total++; - } DPRINTF("Total decode len = %d\n", total); @@ -708,7 +707,7 @@ __UCLIBC_MUTEX_STATIC(mylock, PTHREAD_MUTEX_INITIALIZER); * is pretty lame. I think these two variables can probably be de-global-ized, * which should eliminate the need for doing locking here... Needs a closer * look anyways. */ -static int ns=0, id=1; +static int ns = 0, id = 1; int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char **nsip, unsigned char **outpacket, struct resolv_answer *a) @@ -734,7 +733,7 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char fd = -1; if (!packet || !lookup || !nscount) - goto fail; + goto fail; DPRINTF("Looking up type %d answer for '%s'\n", type, name); @@ -805,36 +804,37 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char #endif if (fd < 0) { retries++; - continue; + continue; } /* Connect to the UDP socket so that asyncronous errors are returned */ #ifdef __UCLIBC_HAS_IPV6__ if (v6) { - sa6.sin6_family = AF_INET6; - sa6.sin6_port = htons(NAMESERVER_PORT); - /* sa6.sin6_addr is already here */ - rc = connect(fd, (struct sockaddr *) &sa6, sizeof(sa6)); + sa6.sin6_family = AF_INET6; + sa6.sin6_port = htons(NAMESERVER_PORT); + /* sa6.sin6_addr is already here */ + rc = connect(fd, (struct sockaddr *) &sa6, sizeof(sa6)); } else { #endif - sa.sin_family = AF_INET; - sa.sin_port = htons(NAMESERVER_PORT); - __UCLIBC_MUTEX_LOCK(__resolv_lock); - /* 'dns' is really __nameserver[] which is a global that - needs to hold __resolv_lock before access!! */ - sa.sin_addr.s_addr = inet_addr(dns); - __UCLIBC_MUTEX_UNLOCK(__resolv_lock); - rc = connect(fd, (struct sockaddr *) &sa, sizeof(sa)); + sa.sin_family = AF_INET; + sa.sin_port = htons(NAMESERVER_PORT); + __UCLIBC_MUTEX_LOCK(__resolv_lock); + /* 'dns' is really __nameserver[] which is a global that + needs to hold __resolv_lock before access!! */ + sa.sin_addr.s_addr = inet_addr(dns); + __UCLIBC_MUTEX_UNLOCK(__resolv_lock); + rc = connect(fd, (struct sockaddr *) &sa, sizeof(sa)); #ifdef __UCLIBC_HAS_IPV6__ } #endif if (rc < 0) { - if (errno == ENETUNREACH) { + if (errno == ENETUNREACH) { /* routing error, presume not transient */ goto tryall; - } else + } else { /* retry */ retries++; + } continue; } @@ -848,7 +848,7 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char tv.tv_sec = REPLY_TIMEOUT; tv.tv_usec = 0; if (select(fd + 1, &fds, NULL, NULL, &tv) <= 0) { - DPRINTF("Timeout\n"); + DPRINTF("Timeout\n"); /* timed out, so retry send and receive, * to next nameserver on queue */ @@ -870,7 +870,6 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char goto again; } - DPRINTF("Got response %s\n", "(i think)!"); DPRINTF("qrcount=%d,ancount=%d,nscount=%d,arcount=%d\n", h.qdcount, h.ancount, h.nscount, h.arcount); @@ -895,56 +894,44 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char DPRINTF("Decoding answer at pos %d\n", pos); first_answer = 1; - for (j=0;j<h.ancount;j++,pos += i) - { - i = __decode_answer(packet, pos, &ma); + for (j = 0; j < h.ancount; j++, pos += i) { + i = __decode_answer(packet, pos, &ma); + + if (i < 0) { + DPRINTF("failed decode %d\n", i); + goto again; + } - if (i<0) { - DPRINTF("failed decode %d\n", i); + if (first_answer) { + ma.buf = a->buf; + ma.buflen = a->buflen; + ma.add_count = a->add_count; + memcpy(a, &ma, sizeof(ma)); + if (a->atype != T_SIG && (0 == a->buf || (type != T_A && type != T_AAAA))) + break; + if (a->atype != type) { + free(a->dotted); + continue; + } + a->add_count = h.ancount - j - 1; + if ((a->rdlength + sizeof(struct in_addr*)) * a->add_count > a->buflen) + break; + a->add_count = 0; + first_answer = 0; + } else { + free(ma.dotted); + if (ma.atype != type) + continue; + if (a->rdlength != ma.rdlength) { + free(a->dotted); + DPRINTF("Answer address len(%u) differs from original(%u)\n", + ma.rdlength, a->rdlength); goto again; } - - if ( first_answer ) - { - ma.buf = a->buf; - ma.buflen = a->buflen; - ma.add_count = a->add_count; - memcpy(a, &ma, sizeof(ma)); - if (a->atype != T_SIG && (0 == a->buf || (type != T_A && type != T_AAAA))) - { - break; - } - if (a->atype != type) - { - free(a->dotted); - continue; - } - a->add_count = h.ancount - j - 1; - if ((a->rdlength + sizeof(struct in_addr*)) * a->add_count > a->buflen) - { - break; - } - a->add_count = 0; - first_answer = 0; - } - else - { - free(ma.dotted); - if (ma.atype != type) - { - continue; - } - if (a->rdlength != ma.rdlength) - { - free(a->dotted); - DPRINTF("Answer address len(%u) differs from original(%u)\n", - ma.rdlength, a->rdlength); - goto again; - } - memcpy(a->buf + (a->add_count * ma.rdlength), ma.rdata, ma.rdlength); - ++a->add_count; - } + memcpy(a->buf + (a->add_count * ma.rdlength), ma.rdata, ma.rdlength); + ++a->add_count; } + } DPRINTF("Answer name = |%s|\n", a->dotted); DPRINTF("Answer type = |%d|\n", a->atype); @@ -969,7 +956,7 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char /* if there are other nameservers, give them a go, otherwise return with error */ { - variant = -1; + variant = -1; local_ns = (local_ns + 1) % nscount; if (local_ns == 0) retries++; @@ -980,39 +967,39 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char again: /* if there are searchdomains, try them or fallback as passed */ { - int sdomains; - __UCLIBC_MUTEX_LOCK(__resolv_lock); - sdomains=__searchdomains; - __UCLIBC_MUTEX_UNLOCK(__resolv_lock); + int sdomains; + __UCLIBC_MUTEX_LOCK(__resolv_lock); + sdomains = __searchdomains; + __UCLIBC_MUTEX_UNLOCK(__resolv_lock); - if (variant < sdomains - 1) { + if (variant < sdomains - 1) { /* next search */ variant++; - } else { + } else { /* next server, first search */ local_ns = (local_ns + 1) % nscount; if (local_ns == 0) retries++; variant = -1; - } + } } } fail: if (fd != -1) - close(fd); + close(fd); if (lookup) - free(lookup); + free(lookup); if (packet) - free(packet); + free(packet); h_errno = NETDB_INTERNAL; /* Mess with globals while under lock */ if (local_ns != -1) { - __UCLIBC_MUTEX_LOCK(mylock); - ns = local_ns; - id = local_id; - __UCLIBC_MUTEX_UNLOCK(mylock); + __UCLIBC_MUTEX_LOCK(mylock); + ns = local_ns; + id = local_id; + __UCLIBC_MUTEX_UNLOCK(mylock); } return -1; } @@ -1044,52 +1031,51 @@ void attribute_hidden __open_nameservers() /* int rv = 0; */ __UCLIBC_MUTEX_LOCK(__resolv_lock); - if (__nameservers > 0) { + if (__nameservers > 0) goto DONE; - } if ((fp = fopen("/etc/resolv.conf", "r")) || (fp = fopen("/etc/config/resolv.conf", "r"))) - { + { - while (fgets(szBuffer, sizeof(szBuffer), fp) != NULL) { + while (fgets(szBuffer, sizeof(szBuffer), fp) != NULL) { - for (p = szBuffer; *p && isspace(*p); p++) - /* skip white space */; - if (*p == '\0' || *p == '\n' || *p == '#') /* skip comments etc */ - continue; - argc = 0; - while (*p && argc < RESOLV_ARGS) { - argv[argc++] = p; - while (*p && !isspace(*p) && *p != '\n') - p++; - while (*p && (isspace(*p) || *p == '\n')) /* remove spaces */ - *p++ = '\0'; - } + for (p = szBuffer; *p && isspace(*p); p++) + /* skip white space */; + if (*p == '\0' || *p == '\n' || *p == '#') /* skip comments etc */ + continue; + argc = 0; + while (*p && argc < RESOLV_ARGS) { + argv[argc++] = p; + while (*p && !isspace(*p) && *p != '\n') + p++; + while (*p && (isspace(*p) || *p == '\n')) /* remove spaces */ + *p++ = '\0'; + } - if (strcmp(argv[0], "nameserver") == 0) { - for (i = 1; i < argc && __nameservers < MAX_SERVERS; i++) { - __nameserver[__nameservers++] = strdup(argv[i]); - DPRINTF("adding nameserver %s\n", argv[i]); - } + if (strcmp(argv[0], "nameserver") == 0) { + for (i = 1; i < argc && __nameservers < MAX_SERVERS; i++) { + __nameserver[__nameservers++] = strdup(argv[i]); + DPRINTF("adding nameserver %s\n", argv[i]); } + } - /* domain and search are mutually exclusive, the last one wins */ - if (strcmp(argv[0],"domain")==0 || strcmp(argv[0],"search")==0) { - while (__searchdomains > 0) { - free(__searchdomain[--__searchdomains]); - __searchdomain[__searchdomains] = NULL; - } - for (i=1; i < argc && __searchdomains < MAX_SEARCH; i++) { - __searchdomain[__searchdomains++] = strdup(argv[i]); - DPRINTF("adding search %s\n", argv[i]); - } + /* domain and search are mutually exclusive, the last one wins */ + if (strcmp(argv[0],"domain") == 0 || strcmp(argv[0],"search") == 0) { + while (__searchdomains > 0) { + free(__searchdomain[--__searchdomains]); + __searchdomain[__searchdomains] = NULL; + } + for (i = 1; i < argc && __searchdomains < MAX_SEARCH; i++) { + __searchdomain[__searchdomains++] = strdup(argv[i]); + DPRINTF("adding search %s\n", argv[i]); } } - fclose(fp); - DPRINTF("nameservers = %d\n", __nameservers); - goto DONE; } + fclose(fp); + DPRINTF("nameservers = %d\n", __nameservers); + goto DONE; + } DPRINTF("failed to open %s\n", "resolv.conf"); h_errno = NO_RECOVERY; @@ -1192,17 +1178,16 @@ int res_init(void) /** rp->rhook = NULL; **/ /** rp->_u._ext.nsinit = 0; **/ - if(__searchdomains) { + if (__searchdomains) { int i; - for(i=0; i<__searchdomains; i++) { + for (i = 0; i < __searchdomains; i++) rp->dnsrch[i] = __searchdomain[i]; - } } - if(__nameservers) { + if (__nameservers) { int i; struct in_addr a; - for(i=0; i<__nameservers; i++) { + for (i = 0; i < __nameservers; i++) { if (inet_aton(__nameserver[i], &a)) { rp->nsaddr_list[i].sin_addr = a; rp->nsaddr_list[i].sin_family = AF_INET; @@ -1213,7 +1198,7 @@ int res_init(void) rp->nscount = __nameservers; __UCLIBC_MUTEX_UNLOCK(__resolv_lock); - return(0); + return 0; } libc_hidden_def(res_init) @@ -1252,8 +1237,8 @@ int res_query(const char *dname, int class, int type, memset((char *) &a, '\0', sizeof(a)); __UCLIBC_MUTEX_LOCK(__resolv_lock); - __nameserversXX=__nameservers; - __nameserverXX=__nameserver; + __nameserversXX = __nameservers; + __nameserverXX = __nameserver; __UCLIBC_MUTEX_UNLOCK(__resolv_lock); i = __dns_lookup(dname, type, __nameserversXX, __nameserverXX, &packet, &a); @@ -1466,7 +1451,7 @@ int res_querydomain(name, domain, class, type, answer, anslen) __UCLIBC_MUTEX_UNLOCK(__resolv_lock); if (_res_options & RES_DEBUG) printf(";; res_querydomain(%s, %s, %d, %d)\n", - name, domain?domain:"<Nil>", class, type); + name, (domain ? domain : "<Nil>"), class, type); #endif if (domain == NULL) { /* @@ -1544,55 +1529,55 @@ int attribute_hidden __read_etc_hosts_r(FILE * fp, const char * name, int type, struct hostent ** result, int * h_errnop) { - struct in_addr *in=NULL; - struct in_addr **addr_list=NULL; + struct in_addr *in = NULL; + struct in_addr **addr_list = NULL; #ifdef __UCLIBC_HAS_IPV6__ - struct in6_addr *in6=NULL; - struct in6_addr **addr_list6=NULL; + struct in6_addr *in6 = NULL; + struct in6_addr **addr_list6 =NULL; #endif /* __UCLIBC_HAS_IPV6__ */ char *cp, **alias; - int aliases, i, ret=HOST_NOT_FOUND; + int aliases, i, ret = HOST_NOT_FOUND; if (buflen < sizeof(char *)*(ALIAS_DIM)) return ERANGE; - alias=(char **)buf; - buf+=sizeof(char **)*(ALIAS_DIM); - buflen-=sizeof(char **)*(ALIAS_DIM); + alias = (char **)buf; + buf += sizeof(char **)*(ALIAS_DIM); + buflen -= sizeof(char **)*(ALIAS_DIM); - if (action!=GETHOSTENT) { + if (action != GETHOSTENT) { #ifdef __UCLIBC_HAS_IPV6__ - char *p=buf; - size_t len=buflen; + char *p = buf; + size_t len = buflen; #endif /* __UCLIBC_HAS_IPV6__ */ - *h_errnop=NETDB_INTERNAL; + *h_errnop = NETDB_INTERNAL; if (buflen < sizeof(*in)) return ERANGE; - in=(struct in_addr*)buf; - buf+=sizeof(*in); - buflen-=sizeof(*in); + in = (struct in_addr*)buf; + buf += sizeof(*in); + buflen -= sizeof(*in); if (buflen < sizeof(*addr_list)*2) return ERANGE; - addr_list=(struct in_addr **)buf; - buf+=sizeof(*addr_list)*2; - buflen-=sizeof(*addr_list)*2; + addr_list = (struct in_addr **)buf; + buf += sizeof(*addr_list)*2; + buflen -= sizeof(*addr_list)*2; #ifdef __UCLIBC_HAS_IPV6__ if (len < sizeof(*in6)) return ERANGE; - in6=(struct in6_addr*)p; - p+=sizeof(*in6); - len-=sizeof(*in6); + in6 = (struct in6_addr*)p; + p += sizeof(*in6); + len -= sizeof(*in6); if (len < sizeof(*addr_list6)*2) return ERANGE; - addr_list6=(struct in6_addr**)p; - p+=sizeof(*addr_list6)*2; - len-=sizeof(*addr_list6)*2; + addr_list6 = (struct in6_addr**)p; + p += sizeof(*addr_list6)*2; + len -= sizeof(*addr_list6)*2; if (len < buflen) { - buflen=len; - buf=p; + buflen = len; + buf = p; } #endif /* __UCLIBC_HAS_IPV6__ */ @@ -1601,12 +1586,12 @@ int attribute_hidden __read_etc_hosts_r(FILE * fp, const char * name, int type, __open_etc_hosts(&fp); if (fp == NULL) { - result=NULL; + result = NULL; return errno; } } - *h_errnop=HOST_NOT_FOUND; + *h_errnop = HOST_NOT_FOUND; while (fgets(buf, buflen, fp)) { if ((cp = strchr(buf, '#'))) *cp = '\0'; @@ -1629,10 +1614,10 @@ int attribute_hidden __read_etc_hosts_r(FILE * fp, const char * name, int type, if (aliases < 2) continue; /* syntax error really */ - if (action==GETHOSTENT) { + if (action == GETHOSTENT) { /* Return whatever the next entry happens to be. */ break; - } else if (action==GET_HOSTS_BYADDR) { + } else if (action == GET_HOSTS_BYADDR) { if (strcmp(name, alias[0]) != 0) continue; } else { @@ -1653,10 +1638,10 @@ int attribute_hidden __read_etc_hosts_r(FILE * fp, const char * name, int type, result_buf->h_length = sizeof(*in); result_buf->h_addr_list = (char**) addr_list; result_buf->h_aliases = alias + 2; - *result=result_buf; - ret=NETDB_SUCCESS; + *result = result_buf; + ret = NETDB_SUCCESS; #ifdef __UCLIBC_HAS_IPV6__ - } else if (type == AF_INET6 && inet_pton(AF_INET6, alias[0], in6) > 0) { + } else if (type == AF_INET6 && inet_pton(AF_INET6, alias[0], in6) > 0) { DPRINTF("Found INET6\n"); addr_list6[0] = in6; addr_list6[1] = 0; @@ -1665,23 +1650,21 @@ int attribute_hidden __read_etc_hosts_r(FILE * fp, const char * name, int type, result_buf->h_length = sizeof(*in6); result_buf->h_addr_list = (char**) addr_list6; result_buf->h_aliases = alias + 2; - *result=result_buf; - ret=NETDB_SUCCESS; + *result = result_buf; + ret = NETDB_SUCCESS; #endif /* __UCLIBC_HAS_IPV6__ */ } else { DPRINTF("Error\n"); - ret=TRY_AGAIN; + ret = TRY_AGAIN; break; /* bad ip address */ - } + } - if (action!=GETHOSTENT) { + if (action != GETHOSTENT) fclose(fp); - } return ret; } - if (action!=GETHOSTENT) { + if (action != GETHOSTENT) fclose(fp); - } return ret; } #endif @@ -1695,52 +1678,50 @@ static FILE * __gethostent_fp; void endhostent (void) { - __UCLIBC_MUTEX_LOCK(mylock); - __stay_open = 0; - if (__gethostent_fp) { - fclose(__gethostent_fp); - } - __UCLIBC_MUTEX_UNLOCK(mylock); + __UCLIBC_MUTEX_LOCK(mylock); + __stay_open = 0; + if (__gethostent_fp) + fclose(__gethostent_fp); + __UCLIBC_MUTEX_UNLOCK(mylock); } void sethostent (int stay_open) { - __UCLIBC_MUTEX_LOCK(mylock); - __stay_open = stay_open; - __UCLIBC_MUTEX_UNLOCK(mylock); + __UCLIBC_MUTEX_LOCK(mylock); + __stay_open = stay_open; + __UCLIBC_MUTEX_UNLOCK(mylock); } int gethostent_r(struct hostent *result_buf, char *buf, size_t buflen, struct hostent **result, int *h_errnop) { - int ret; + int ret; - __UCLIBC_MUTEX_LOCK(mylock); - if (__gethostent_fp == NULL) { - __open_etc_hosts(&__gethostent_fp); + __UCLIBC_MUTEX_LOCK(mylock); if (__gethostent_fp == NULL) { - *result = NULL; - ret = TRY_AGAIN; - goto DONE; + __open_etc_hosts(&__gethostent_fp); + if (__gethostent_fp == NULL) { + *result = NULL; + ret = TRY_AGAIN; + goto DONE; + } } - } - ret = __read_etc_hosts_r(__gethostent_fp, NULL, AF_INET, GETHOSTENT, + ret = __read_etc_hosts_r(__gethostent_fp, NULL, AF_INET, GETHOSTENT, result_buf, buf, buflen, result, h_errnop); - if (__stay_open == 0) { - fclose(__gethostent_fp); - } + if (__stay_open == 0) + fclose(__gethostent_fp); DONE: - __UCLIBC_MUTEX_UNLOCK(mylock); - return(ret); + __UCLIBC_MUTEX_UNLOCK(mylock); + return ret; } libc_hidden_def(gethostent_r) struct hostent *gethostent (void) { - static struct { - struct hostent h; - char buf[ + static struct { + struct hostent h; + char buf[ #ifndef __UCLIBC_HAS_IPV6__ sizeof(struct in_addr) + sizeof(struct in_addr *)*2 + #else @@ -1748,15 +1729,15 @@ struct hostent *gethostent (void) #endif /* __UCLIBC_HAS_IPV6__ */ sizeof(char *)*(ALIAS_DIM) + 80/*namebuffer*/ + 2/* margin */]; - } *sp; - struct hostent *host; - - free(sp); - sp = __uc_malloc(sizeof(*sp)); - __UCLIBC_MUTEX_LOCK(mylock); - gethostent_r(&sp->h, sp->buf, sizeof(sp->buf), &host, &h_errno); - __UCLIBC_MUTEX_UNLOCK(mylock); - return(host); + } *sp; + struct hostent *host; + + free(sp); + sp = __uc_malloc(sizeof(*sp)); + __UCLIBC_MUTEX_LOCK(mylock); + gethostent_r(&sp->h, sp->buf, sizeof(sp->buf), &host, &h_errno); + __UCLIBC_MUTEX_UNLOCK(mylock); + return host; } #endif @@ -1768,8 +1749,8 @@ int attribute_hidden __get_hosts_byname_r(const char * name, int type, struct hostent ** result, int * h_errnop) { - return(__read_etc_hosts_r(NULL, name, type, GET_HOSTS_BYNAME, - result_buf, buf, buflen, result, h_errnop)); + return __read_etc_hosts_r(NULL, name, type, GET_HOSTS_BYNAME, + result_buf, buf, buflen, result, h_errnop); } #endif @@ -1787,7 +1768,7 @@ int attribute_hidden __get_hosts_byaddr_r(const char * addr, int len, int type, char ipaddr[INET6_ADDRSTRLEN]; #endif /* __UCLIBC_HAS_IPV6__ */ - switch (type) { + switch (type) { case AF_INET: if (len != sizeof(struct in_addr)) return 0; @@ -1860,7 +1841,7 @@ BAD_FAM: sizeof(struct in6_addr), AF_INET6); else #endif /* __UCLIBC_HAS_IPV6__ */ - h = gethostbyaddr ((const void *) &(((const struct sockaddr_in *)sa)->sin_addr), + h = gethostbyaddr ((const void *) &(((const struct sockaddr_in *)sa)->sin_addr), sizeof(struct in_addr), AF_INET); if (h) { @@ -2017,7 +1998,7 @@ int gethostbyname_r(const char * name, char ** __nameserverXX; __open_nameservers(); - *result=NULL; + *result = NULL; if (!name) return EINVAL; @@ -2026,8 +2007,8 @@ int gethostbyname_r(const char * name, int old_errno = errno; /* Save the old errno and reset errno */ __set_errno(0); /* to check for missing /etc/hosts. */ - if ((i=__get_hosts_byname_r(name, AF_INET, result_buf, - buf, buflen, result, h_errnop))==0) + if ((i = __get_hosts_byname_r(name, AF_INET, result_buf, + buf, buflen, result, h_errnop)) == 0) return i; switch (*h_errnop) { case HOST_NOT_FOUND: @@ -2049,26 +2030,26 @@ int gethostbyname_r(const char * name, *h_errnop = NETDB_INTERNAL; if (buflen < sizeof(*in)) return ERANGE; - in=(struct in_addr*)buf; - buf+=sizeof(*in); - buflen-=sizeof(*in); + in = (struct in_addr*)buf; + buf += sizeof(*in); + buflen -= sizeof(*in); if (buflen < sizeof(*addr_list)*2) return ERANGE; - addr_list=(struct in_addr**)buf; - buf+=sizeof(*addr_list)*2; - buflen-=sizeof(*addr_list)*2; + addr_list = (struct in_addr**)buf; + buf += sizeof(*addr_list)*2; + buflen -= sizeof(*addr_list)*2; addr_list[0] = in; addr_list[1] = 0; if (buflen < sizeof(char *)*(ALIAS_DIM)) return ERANGE; - alias=(char **)buf; - buf+=sizeof(char **)*(ALIAS_DIM); - buflen-=sizeof(char **)*(ALIAS_DIM); + alias = (char **)buf; + buf += sizeof(char **)*(ALIAS_DIM); + buflen -= sizeof(char **)*(ALIAS_DIM); - if (buflen<256) + if (buflen < 256) return ERANGE; strncpy(buf, name, buflen); @@ -2077,57 +2058,54 @@ int gethostbyname_r(const char * name, /* First check if this is already an address */ if (inet_aton(name, in)) { - result_buf->h_name = buf; - result_buf->h_addrtype = AF_INET; - result_buf->h_length = sizeof(*in); - result_buf->h_addr_list = (char **) addr_list; - result_buf->h_aliases = alias; - *result=result_buf; - *h_errnop = NETDB_SUCCESS; - return NETDB_SUCCESS; + result_buf->h_name = buf; + result_buf->h_addrtype = AF_INET; + result_buf->h_length = sizeof(*in); + result_buf->h_addr_list = (char **) addr_list; + result_buf->h_aliases = alias; + *result = result_buf; + *h_errnop = NETDB_SUCCESS; + return NETDB_SUCCESS; } for (;;) { - __UCLIBC_MUTEX_LOCK(__resolv_lock); - __nameserversXX=__nameservers; - __nameserverXX=__nameserver; - __UCLIBC_MUTEX_UNLOCK(__resolv_lock); - a.buf = buf; - a.buflen = buflen; - a.add_count = 0; - i = __dns_lookup(name, T_A, __nameserversXX, __nameserverXX, &packet, &a); + __UCLIBC_MUTEX_LOCK(__resolv_lock); + __nameserversXX = __nameservers; + __nameserverXX = __nameserver; + __UCLIBC_MUTEX_UNLOCK(__resolv_lock); + a.buf = buf; + a.buflen = buflen; + a.add_count = 0; + i = __dns_lookup(name, T_A, __nameserversXX, __nameserverXX, &packet, &a); - if (i < 0) { + if (i < 0) { *h_errnop = HOST_NOT_FOUND; DPRINTF("__dns_lookup\n"); return TRY_AGAIN; - } - - if ((a.rdlength + sizeof(struct in_addr*)) * a.add_count + 256 > buflen) - { - free(a.dotted); - free(packet); - *h_errnop = NETDB_INTERNAL; - DPRINTF("buffer too small for all addresses\n"); - return ERANGE; - } - else if(a.add_count > 0) - { - memmove(buf - sizeof(struct in_addr*)*2, buf, a.add_count * a.rdlength); - addr_list = (struct in_addr**)(buf + a.add_count * a.rdlength); - addr_list[0] = in; - for (i = a.add_count-1; i>=0; --i) - addr_list[i+1] = (struct in_addr*)(buf - sizeof(struct in_addr*)*2 + a.rdlength * i); - addr_list[a.add_count + 1] = 0; - buflen -= (((char*)&(addr_list[a.add_count + 2])) - buf); - buf = (char*)&addr_list[a.add_count + 2]; - } + } - strncpy(buf, a.dotted, buflen); - free(a.dotted); + if ((a.rdlength + sizeof(struct in_addr*)) * a.add_count + 256 > buflen) { + free(a.dotted); + free(packet); + *h_errnop = NETDB_INTERNAL; + DPRINTF("buffer too small for all addresses\n"); + return ERANGE; + } else if (a.add_count > 0) { + memmove(buf - sizeof(struct in_addr*)*2, buf, a.add_count * a.rdlength); + addr_list = (struct in_addr**)(buf + a.add_count * a.rdlength); + addr_list[0] = in; + for (i = a.add_count - 1; i >= 0; --i) + addr_list[i+1] = (struct in_addr*)(buf - sizeof(struct in_addr*)*2 + a.rdlength * i); + addr_list[a.add_count + 1] = 0; + buflen -= (((char*)&(addr_list[a.add_count + 2])) - buf); + buf = (char*)&addr_list[a.add_count + 2]; + } + + strncpy(buf, a.dotted, buflen); + free(a.dotted); - if (a.atype == T_A) { /* ADDRESS */ + if (a.atype == T_A) { /* ADDRESS */ memcpy(in, a.rdata, sizeof(*in)); result_buf->h_name = buf; result_buf->h_addrtype = AF_INET; @@ -2139,14 +2117,14 @@ int gethostbyname_r(const char * name, result_buf->h_aliases = alias; /* TODO: generate the full list */ free(packet); break; - } else { + } else { free(packet); - *h_errnop=HOST_NOT_FOUND; + *h_errnop = HOST_NOT_FOUND; return TRY_AGAIN; - } + } } - *result=result_buf; + *result = result_buf; *h_errnop = NETDB_SUCCESS; return NETDB_SUCCESS; } @@ -2181,7 +2159,7 @@ int gethostbyname2_r(const char *name, int family, return EINVAL; __open_nameservers(); - *result=NULL; + *result = NULL; if (!name) return EINVAL; @@ -2190,8 +2168,8 @@ int gethostbyname2_r(const char *name, int family, int old_errno = errno; /* Save the old errno and reset errno */ __set_errno(0); /* to check for missing /etc/hosts. */ - if ((i=__get_hosts_byname_r(name, family, result_buf, - buf, buflen, result, h_errnop))==0) + if ((i = __get_hosts_byname_r(name, family, result_buf, + buf, buflen, result, h_errnop)) == 0) return i; switch (*h_errnop) { case HOST_NOT_FOUND: @@ -2213,40 +2191,40 @@ int gethostbyname2_r(const char *name, int family, *h_errnop = NETDB_INTERNAL; if (buflen < sizeof(*in)) return ERANGE; - in=(struct in6_addr*)buf; - buf+=sizeof(*in); - buflen-=sizeof(*in); + in = (struct in6_addr*)buf; + buf += sizeof(*in); + buflen -= sizeof(*in); if (buflen < sizeof(*addr_list)*2) return ERANGE; - addr_list=(struct in6_addr**)buf; - buf+=sizeof(*addr_list)*2; - buflen-=sizeof(*addr_list)*2; + addr_list = (struct in6_addr**)buf; + buf += sizeof(*addr_list)*2; + buflen -= sizeof(*addr_list)*2; addr_list[0] = in; addr_list[1] = 0; - if (buflen<256) + if (buflen < 256) return ERANGE; strncpy(buf, name, buflen); /* First check if this is already an address */ if (inet_pton(AF_INET6, name, in)) { - result_buf->h_name = buf; - result_buf->h_addrtype = AF_INET6; - result_buf->h_length = sizeof(*in); - result_buf->h_addr_list = (char **) addr_list; - *result=result_buf; - *h_errnop = NETDB_SUCCESS; - return NETDB_SUCCESS; + result_buf->h_name = buf; + result_buf->h_addrtype = AF_INET6; + result_buf->h_length = sizeof(*in); + result_buf->h_addr_list = (char **) addr_list; + *result = result_buf; + *h_errnop = NETDB_SUCCESS; + return NETDB_SUCCESS; } memset((char *) &a, '\0', sizeof(a)); for (;;) { __UCLIBC_MUTEX_LOCK(__resolv_lock); - __nameserversXX=__nameservers; - __nameserverXX=__nameserver; + __nameserversXX = __nameservers; + __nameserverXX = __nameserver; __UCLIBC_MUTEX_UNLOCK(__resolv_lock); i = __dns_lookup(buf, T_AAAA, __nameserversXX, __nameserverXX, &packet, &a); @@ -2283,12 +2261,12 @@ int gethostbyname2_r(const char *name, int family, break; } else { free(packet); - *h_errnop=HOST_NOT_FOUND; + *h_errnop = HOST_NOT_FOUND; return TRY_AGAIN; } } - *result=result_buf; + *result = result_buf; *h_errnop = NETDB_SUCCESS; return NETDB_SUCCESS; #endif /* __UCLIBC_HAS_IPV6__ */ @@ -2320,7 +2298,7 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type, int __nameserversXX; char ** __nameserverXX; - *result=NULL; + *result = NULL; if (!addr) return EINVAL; @@ -2342,8 +2320,8 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type, } /* do /etc/hosts first */ - if ((i=__get_hosts_byaddr_r(addr, len, type, result_buf, - buf, buflen, result, h_errnop))==0) + if ((i = __get_hosts_byaddr_r(addr, len, type, result_buf, + buf, buflen, result, h_errnop)) == 0) return i; switch (*h_errnop) { case HOST_NOT_FOUND: @@ -2356,52 +2334,52 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type, __open_nameservers(); #ifdef __UCLIBC_HAS_IPV6__ - qp=buf; - plen=buflen; + qp = buf; + plen = buflen; #endif /* __UCLIBC_HAS_IPV6__ */ *h_errnop = NETDB_INTERNAL; if (buflen < sizeof(*in)) return ERANGE; - in=(struct in_addr*)buf; - buf+=sizeof(*in); - buflen-=sizeof(*in); + in = (struct in_addr*)buf; + buf += sizeof(*in); + buflen -= sizeof(*in); if (buflen < sizeof(*addr_list)*2) return ERANGE; - addr_list=(struct in_addr**)buf; - buf+=sizeof(*addr_list)*2; - buflen-=sizeof(*addr_list)*2; + addr_list = (struct in_addr**)buf; + buf += sizeof(*addr_list)*2; + buflen -= sizeof(*addr_list)*2; if (buflen < sizeof(char *)*(ALIAS_DIM)) return ERANGE; - alias=(char **)buf; - buf+=sizeof(*alias)*(ALIAS_DIM); - buflen-=sizeof(*alias)*(ALIAS_DIM); + alias = (char **)buf; + buf += sizeof(*alias)*(ALIAS_DIM); + buflen -= sizeof(*alias)*(ALIAS_DIM); #ifdef __UCLIBC_HAS_IPV6__ if (plen < sizeof(*in6)) return ERANGE; - in6=(struct in6_addr*)qp; - qp+=sizeof(*in6); - plen-=sizeof(*in6); + in6 = (struct in6_addr*)qp; + qp += sizeof(*in6); + plen -= sizeof(*in6); if (plen < sizeof(*addr_list6)*2) return ERANGE; - addr_list6=(struct in6_addr**)qp; - qp+=sizeof(*addr_list6)*2; - plen-=sizeof(*addr_list6)*2; + addr_list6 = (struct in6_addr**)qp; + qp += sizeof(*addr_list6)*2; + plen -= sizeof(*addr_list6)*2; if (plen < buflen) { - buflen=plen; - buf=qp; + buflen = plen; + buf = qp; } #endif /* __UCLIBC_HAS_IPV6__ */ - if (buflen<256) + if (buflen < 256) return ERANGE; - if(type == AF_INET) { + if (type == AF_INET) { unsigned char *tmp_addr = (unsigned char *)addr; memcpy(&in->s_addr, addr, len); @@ -2433,8 +2411,8 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type, for (;;) { __UCLIBC_MUTEX_LOCK(__resolv_lock); - __nameserversXX=__nameservers; - __nameserverXX=__nameserver; + __nameserversXX = __nameservers; + __nameserverXX = __nameserver; __UCLIBC_MUTEX_UNLOCK(__resolv_lock); i = __dns_lookup(buf, T_PTR, __nameserversXX, __nameserverXX, &packet, &a); @@ -2467,7 +2445,7 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type, result_buf->h_name = buf; result_buf->h_addrtype = type; - if(type == AF_INET) { + if (type == AF_INET) { result_buf->h_length = sizeof(*in); #ifdef __UCLIBC_HAS_IPV6__ } else { @@ -2485,7 +2463,7 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type, } } - *result=result_buf; + *result = result_buf; *h_errnop = NETDB_SUCCESS; return NETDB_SUCCESS; } @@ -2534,15 +2512,15 @@ static int printable(int ch) static int special(int ch) { switch (ch) { - case 0x22: /* '"' */ - case 0x2E: /* '.' */ - case 0x3B: /* ';' */ - case 0x5C: /* '\\' */ + case 0x22: /* '"' */ + case 0x2E: /* '.' */ + case 0x3B: /* ';' */ + case 0x5C: /* '\\' */ /* Special modifiers in zone files. */ - case 0x40: /* '@' */ - case 0x24: /* '$' */ + case 0x40: /* '@' */ + case 0x24: /* '$' */ return (1); - default: + default: return (0); } } |