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Style, minor cleanups

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This commit is contained in:
Glenn L McGrath 2002-11-28 09:52:23 +00:00
parent efdd0aed23
commit 30db423e11
1 changed files with 164 additions and 156 deletions
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320
libbb/inet_common.c
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@ -4,7 +4,7 @@
* *
* Heavily modified by Manuel Novoa III Mar 12, 2001 * Heavily modified by Manuel Novoa III Mar 12, 2001
* *
* Version: $Id: inet_common.c,v 1.4 2002/11/26 02:35:15 bug1 Exp $ * Version: $Id: inet_common.c,v 1.5 2002/11/28 09:52:23 bug1 Exp $
* *
*/ */
@ -21,181 +21,187 @@
#endif #endif
const char bb_INET_default[]="default"; const char bb_INET_default[] = "default";
int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst) int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
{ {
struct hostent *hp; struct hostent *hp;
struct netent *np; struct netent *np;
/* Grmpf. -FvK */ /* Grmpf. -FvK */
s_in->sin_family = AF_INET; s_in->sin_family = AF_INET;
s_in->sin_port = 0; s_in->sin_port = 0;
/* Default is special, meaning 0.0.0.0. */ /* Default is special, meaning 0.0.0.0. */
if (!strcmp(name, bb_INET_default)) { if (!strcmp(name, bb_INET_default)) {
s_in->sin_addr.s_addr = INADDR_ANY; s_in->sin_addr.s_addr = INADDR_ANY;
return (1); return (1);
} }
/* Look to see if it's a dotted quad. */ /* Look to see if it's a dotted quad. */
if (inet_aton(name, &s_in->sin_addr)) { if (inet_aton(name, &s_in->sin_addr)) {
return 0; return 0;
} }
/* If we expect this to be a hostname, try hostname database first */ /* If we expect this to be a hostname, try hostname database first */
#ifdef DEBUG #ifdef DEBUG
if (hostfirst) fprintf (stderr, "gethostbyname (%s)\n", name); if (hostfirst) {
error_msg("gethostbyname (%s)", name);
}
#endif #endif
if (hostfirst && if (hostfirst && (hp = gethostbyname(name)) != (struct hostent *) NULL) {
(hp = gethostbyname(name)) != (struct hostent *) NULL) { memcpy((char *) &s_in->sin_addr, (char *) hp->h_addr_list[0],
sizeof(struct in_addr));
return 0;
}
/* Try the NETWORKS database to see if this is a known network. */
#ifdef DEBUG
error_msg("getnetbyname (%s)", name);
#endif
if ((np = getnetbyname(name)) != (struct netent *) NULL) {
s_in->sin_addr.s_addr = htonl(np->n_net);
return 1;
}
if (hostfirst) {
/* Don't try again */
errno = h_errno;
return -1;
}
#ifdef DEBUG
res_init();
_res.options |= RES_DEBUG;
#endif
#ifdef DEBUG
error_msg("gethostbyname (%s)", name);
#endif
if ((hp = gethostbyname(name)) == (struct hostent *) NULL) {
errno = h_errno;
return -1;
}
memcpy((char *) &s_in->sin_addr, (char *) hp->h_addr_list[0], memcpy((char *) &s_in->sin_addr, (char *) hp->h_addr_list[0],
sizeof(struct in_addr)); sizeof(struct in_addr));
return 0; return 0;
}
/* Try the NETWORKS database to see if this is a known network. */
#ifdef DEBUG
fprintf (stderr, "getnetbyname (%s)\n", name);
#endif
if ((np = getnetbyname(name)) != (struct netent *) NULL) {
s_in->sin_addr.s_addr = htonl(np->n_net);
return 1;
}
if (hostfirst) {
/* Don't try again */
errno = h_errno;
return -1;
}
#ifdef DEBUG
res_init();
_res.options |= RES_DEBUG;
#endif
#ifdef DEBUG
fprintf (stderr, "gethostbyname (%s)\n", name);
#endif
if ((hp = gethostbyname(name)) == (struct hostent *) NULL) {
errno = h_errno;
return -1;
}
memcpy((char *) &s_in->sin_addr, (char *) hp->h_addr_list[0],
sizeof(struct in_addr));
return 0;
} }
/* cache */ /* cache */
struct addr { struct addr {
struct sockaddr_in addr; struct sockaddr_in addr;
char *name; char *name;
int host; int host;
struct addr *next; struct addr *next;
}; };
static struct addr *INET_nn = NULL; /* addr-to-name cache */ static struct addr *INET_nn = NULL; /* addr-to-name cache */
/* numeric: & 0x8000: default instead of *, /* numeric: & 0x8000: default instead of *,
* & 0x4000: host instead of net, * & 0x4000: host instead of net,
* & 0x0fff: don't resolve * & 0x0fff: don't resolve
*/ */
int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in, int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
int numeric, unsigned int netmask) int numeric, unsigned int netmask)
{ {
struct hostent *ent; struct hostent *ent;
struct netent *np; struct netent *np;
struct addr *pn; struct addr *pn;
unsigned long ad, host_ad; unsigned long ad, host_ad;
int host = 0; int host = 0;
/* Grmpf. -FvK */ /* Grmpf. -FvK */
if (s_in->sin_family != AF_INET) { if (s_in->sin_family != AF_INET) {
#ifdef DEBUG #ifdef DEBUG
fprintf(stderr, "rresolve: unsupport address family %d !\n", s_in->sin_family); error_msg("rresolve: unsupport address family %d !",
s_in->sin_family);
#endif #endif
errno = EAFNOSUPPORT; errno = EAFNOSUPPORT;
return (-1); return (-1);
} }
ad = (unsigned long) s_in->sin_addr.s_addr; ad = (unsigned long) s_in->sin_addr.s_addr;
#ifdef DEBUG #ifdef DEBUG
fprintf (stderr, "rresolve: %08lx, mask %08x, num %08x \n", ad, netmask, numeric); error_msg("rresolve: %08lx, mask %08x, num %08x", ad, netmask, numeric);
#endif #endif
if (ad == INADDR_ANY) { if (ad == INADDR_ANY) {
if ((numeric & 0x0FFF) == 0) { if ((numeric & 0x0FFF) == 0) {
if (numeric & 0x8000) if (numeric & 0x8000)
safe_strncpy(name, bb_INET_default, len); safe_strncpy(name, bb_INET_default, len);
else else
safe_strncpy(name, "*", len); safe_strncpy(name, "*", len);
return (0); return (0);
}
}
if (numeric & 0x0FFF) {
safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
return (0);
} }
}
if (numeric & 0x0FFF) {
safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
return (0);
}
if ((ad & (~netmask)) != 0 || (numeric & 0x4000)) if ((ad & (~netmask)) != 0 || (numeric & 0x4000))
host = 1; host = 1;
#if 0 #if 0
INET_nn = NULL; INET_nn = NULL;
#endif #endif
pn = INET_nn; pn = INET_nn;
while (pn != NULL) { while (pn != NULL) {
if (pn->addr.sin_addr.s_addr == ad && pn->host == host) { if (pn->addr.sin_addr.s_addr == ad && pn->host == host) {
safe_strncpy(name, pn->name, len); safe_strncpy(name, pn->name, len);
#ifdef DEBUG #ifdef DEBUG
fprintf (stderr, "rresolve: found %s %08lx in cache\n", (host? "host": "net"), ad); error_msg("rresolve: found %s %08lx in cache",
(host ? "host" : "net"), ad);
#endif #endif
return (0); return (0);
}
pn = pn->next;
} }
pn = pn->next;
}
host_ad = ntohl(ad); host_ad = ntohl(ad);
np = NULL; np = NULL;
ent = NULL; ent = NULL;
if (host) { if (host) {
#ifdef DEBUG #ifdef DEBUG
fprintf (stderr, "gethostbyaddr (%08lx)\n", ad); error_msg("gethostbyaddr (%08lx)", ad);
#endif #endif
ent = gethostbyaddr((char *) &ad, 4, AF_INET); ent = gethostbyaddr((char *) &ad, 4, AF_INET);
if (ent != NULL) if (ent != NULL) {
safe_strncpy(name, ent->h_name, len); safe_strncpy(name, ent->h_name, len);
} else { }
} else {
#ifdef DEBUG #ifdef DEBUG
fprintf (stderr, "getnetbyaddr (%08lx)\n", host_ad); error_msg("getnetbyaddr (%08lx)", host_ad);
#endif #endif
np = getnetbyaddr(host_ad, AF_INET); np = getnetbyaddr(host_ad, AF_INET);
if (np != NULL) if (np != NULL) {
safe_strncpy(name, np->n_name, len); safe_strncpy(name, np->n_name, len);
} }
if ((ent == NULL) && (np == NULL)) }
safe_strncpy(name, inet_ntoa(s_in->sin_addr), len); if ((ent == NULL) && (np == NULL)) {
pn = (struct addr *) xmalloc(sizeof(struct addr)); safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
pn->addr = *s_in; }
pn->next = INET_nn; pn = (struct addr *) xmalloc(sizeof(struct addr));
pn->host = host; pn->addr = *s_in;
pn->name = xstrdup(name); pn->next = INET_nn;
INET_nn = pn; pn->host = host;
pn->name = xstrdup(name);
INET_nn = pn;
return (0); return (0);
} }
#ifdef CONFIG_FEATURE_IPV6 #ifdef CONFIG_FEATURE_IPV6
int INET6_resolve(char *name, struct sockaddr_in6 *sin6) int INET6_resolve(char *name, struct sockaddr_in6 *sin6)
{ {
struct addrinfo req, *ai; struct addrinfo req, *ai;
int s; int s;
memset (&req, '\0', sizeof req); memset(&req, '\0', sizeof req);
req.ai_family = AF_INET6; req.ai_family = AF_INET6;
if ((s = getaddrinfo(name, NULL, &req, &ai))) { if ((s = getaddrinfo(name, NULL, &req, &ai))) {
fprintf(stderr, "getaddrinfo: %s: %d\n", name, s); error_msg("getaddrinfo: %s: %d", name, s);
return -1; return -1;
} }
memcpy(sin6, ai->ai_addr, sizeof(struct sockaddr_in6)); memcpy(sin6, ai->ai_addr, sizeof(struct sockaddr_in6));
freeaddrinfo(ai); freeaddrinfo(ai);
return (0); return (0);
} }
#ifndef IN6_IS_ADDR_UNSPECIFIED #ifndef IN6_IS_ADDR_UNSPECIFIED
@ -205,37 +211,39 @@ int INET6_resolve(char *name, struct sockaddr_in6 *sin6)
#endif #endif
int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6, int numeric) int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6,
int numeric)
{ {
int s; int s;
/* Grmpf. -FvK */ /* Grmpf. -FvK */
if (sin6->sin6_family != AF_INET6) { if (sin6->sin6_family != AF_INET6) {
#ifdef DEBUG #ifdef DEBUG
fprintf(stderr, _("rresolve: unsupport address family %d !\n"), error_msg(_("rresolve: unsupport address family %d !\n"),
sin6->sin6_family); sin6->sin6_family);
#endif #endif
errno = EAFNOSUPPORT; errno = EAFNOSUPPORT;
return (-1); return (-1);
} }
if (numeric & 0x7FFF) { if (numeric & 0x7FFF) {
inet_ntop(AF_INET6, &sin6->sin6_addr, name, len); inet_ntop(AF_INET6, &sin6->sin6_addr, name, len);
return (0); return (0);
} }
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
if (numeric & 0x8000) if (numeric & 0x8000) {
strcpy(name, "default"); strcpy(name, "default");
else } else {
strcpy(name, "*"); strcpy(name, "*");
return (0); }
} return (0);
}
if ((s = getnameinfo((struct sockaddr *) sin6, sizeof(struct sockaddr_in6), s = getnameinfo((struct sockaddr *) sin6, sizeof(struct sockaddr_in6), name, len, NULL, 0, 0);
name, len , NULL, 0, 0))) { if (s) {
fputs("getnameinfo failed\n", stderr); error_msg("getnameinfo failed");
return -1; return -1;
} }
return (0); return (0);
} }
#endif /* CONFIG_FEATURE_IPV6 */ #endif /* CONFIG_FEATURE_IPV6 */