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Diffstat (limited to 'hostport.c')
-rw-r--r--hostport.c103
1 files changed, 82 insertions, 21 deletions
diff --git a/hostport.c b/hostport.c
index 6360cbd..5f248f2 100644
--- a/hostport.c
+++ b/hostport.c
@@ -11,9 +11,10 @@
#include <netdb.h>
#include "debug.h"
#include "util.h"
-#include "resolve.h"
+#include "list.h"
+#include "hostport.h"
-void resolve_freehostport(struct hostportres *hp) {
+static void freehostport(struct hostportres *hp) {
if (hp) {
free(hp->host);
free(hp->port);
@@ -23,7 +24,7 @@ void resolve_freehostport(struct hostportres *hp) {
}
}
-static int resolve_parsehostport(struct hostportres *hp, char *hostport, char *default_port) {
+static int parsehostport(struct hostportres *hp, char *hostport, char *default_port) {
char *p, *field;
int ipv6 = 0;
@@ -69,7 +70,7 @@ static int resolve_parsehostport(struct hostportres *hp, char *hostport, char *d
return 1;
}
-struct hostportres *resolve_newhostport(char *hostport, char *default_port, uint8_t prefixok) {
+static struct hostportres *newhostport(char *hostport, char *default_port, uint8_t prefixok) {
struct hostportres *hp;
char *slash, *s;
int plen;
@@ -81,7 +82,7 @@ struct hostportres *resolve_newhostport(char *hostport, char *default_port, uint
}
memset(hp, 0, sizeof(struct hostportres));
- if (!resolve_parsehostport(hp, hostport, default_port))
+ if (!parsehostport(hp, hostport, default_port))
goto errexit;
if (!strcmp(hp->host, "*")) {
@@ -92,22 +93,22 @@ struct hostportres *resolve_newhostport(char *hostport, char *default_port, uint
slash = hp->host ? strchr(hp->host, '/') : NULL;
if (slash) {
if (!prefixok) {
- debug(DBG_WARN, "resolve_newhostport: prefix not allowed here", hp->host);
+ debug(DBG_WARN, "newhostport: prefix not allowed here", hp->host);
goto errexit;
}
s = slash + 1;
if (!*s) {
- debug(DBG_WARN, "resolve_newhostport: prefix length must be specified after the / in %s", hp->host);
+ debug(DBG_WARN, "newhostport: prefix length must be specified after the / in %s", hp->host);
goto errexit;
}
for (; *s; s++)
if (*s < '0' || *s > '9') {
- debug(DBG_WARN, "resolve_newhostport: %s in %s is not a valid prefix length", slash + 1, hp->host);
+ debug(DBG_WARN, "newhostport: %s in %s is not a valid prefix length", slash + 1, hp->host);
goto errexit;
}
plen = atoi(slash + 1);
if (plen < 0 || plen > 128) {
- debug(DBG_WARN, "resolve_newhostport: %s in %s is not a valid prefix length", slash + 1, hp->host);
+ debug(DBG_WARN, "newhostport: %s in %s is not a valid prefix length", slash + 1, hp->host);
goto errexit;
}
hp->prefixlen = plen;
@@ -117,11 +118,11 @@ struct hostportres *resolve_newhostport(char *hostport, char *default_port, uint
return hp;
errexit:
- resolve_freehostport(hp);
+ freehostport(hp);
return NULL;
}
-static int resolve_resolve(struct hostportres *hp, int socktype, uint8_t passive) {
+static int resolvehostport(struct hostportres *hp, int socktype, uint8_t passive) {
struct addrinfo hints, *res;
memset(&hints, 0, sizeof(hints));
@@ -133,7 +134,7 @@ static int resolve_resolve(struct hostportres *hp, int socktype, uint8_t passive
if (!hp->host && !hp->port) {
/* getaddrinfo() doesn't like host and port to be NULL */
if (getaddrinfo(hp->host, "1812" /* can be anything */, &hints, &hp->addrinfo)) {
- debug(DBG_WARN, "resolve_resolve: can't resolve (null) port (null)");
+ debug(DBG_WARN, "resolvehostport: can't resolve (null) port (null)");
goto errexit;
}
for (res = hp->addrinfo; res; res = res->ai_next)
@@ -142,21 +143,21 @@ static int resolve_resolve(struct hostportres *hp, int socktype, uint8_t passive
if (hp->prefixlen != 255)
hints.ai_flags |= AI_NUMERICHOST;
if (getaddrinfo(hp->host, hp->port, &hints, &hp->addrinfo)) {
- debug(DBG_WARN, "resolve_resolve: can't resolve %s port %s", hp->host ? hp->host : "(null)", hp->port ? hp->port : "(null)");
+ debug(DBG_WARN, "resolvehostport: can't resolve %s port %s", hp->host ? hp->host : "(null)", hp->port ? hp->port : "(null)");
goto errexit;
}
if (hp->prefixlen != 255) {
switch (hp->addrinfo->ai_family) {
case AF_INET:
if (hp->prefixlen > 32) {
- debug(DBG_WARN, "resolve_resolve: prefix length must be <= 32 in %s", hp->host);
+ debug(DBG_WARN, "resolvehostport: prefix length must be <= 32 in %s", hp->host);
goto errexit;
}
break;
case AF_INET6:
break;
default:
- debug(DBG_WARN, "resolve_resolve: prefix must be IPv4 or IPv6 in %s", hp->host);
+ debug(DBG_WARN, "resolvehostport: prefix must be IPv4 or IPv6 in %s", hp->host);
goto errexit;
}
}
@@ -169,26 +170,50 @@ static int resolve_resolve(struct hostportres *hp, int socktype, uint8_t passive
return 0;
}
-int resolve_hostports(struct list *hostports, int socktype) {
+int addhostport(struct list **hostports, char *hostport, char *portdefault, uint8_t prefixok) {
+ struct hostportres *hp;
+
+ hp = newhostport(hostport, portdefault, prefixok);
+ if (!hp)
+ return 0;
+ if (!*hostports)
+ *hostports = list_create();
+ if (!*hostports || !list_push(*hostports, hp)) {
+ freehostport(hp);
+ debug(DBG_ERR, "addhostport: malloc failed");
+ return 0;
+ }
+ return 1;
+}
+
+void freehostports(struct list *hostports) {
+ struct hostportres *hp;
+
+ while ((hp = (struct hostportres *)list_shift(hostports)))
+ freehostport(hp);
+ list_destroy(hostports);
+}
+
+int resolvehostports(struct list *hostports, int socktype) {
struct list_node *entry;
struct hostportres *hp;
for (entry = list_first(hostports); entry; entry = list_next(entry)) {
hp = (struct hostportres *)entry->data;
- if (!hp->addrinfo && !resolve_resolve(hp, socktype, 0))
+ if (!hp->addrinfo && !resolvehostport(hp, socktype, 0))
return 0;
}
return 1;
}
-struct addrinfo *resolve_passiveaddrinfo(char *hostport, char *default_port, int socktype) {
+struct addrinfo *resolvepassiveaddrinfo(char *hostport, char *default_port, int socktype) {
struct addrinfo *ai = NULL;
- struct hostportres *hp = resolve_newhostport(hostport, default_port, 0);
- if (hp && resolve_resolve(hp, socktype, 1)) {
+ struct hostportres *hp = newhostport(hostport, default_port, 0);
+ if (hp && resolvehostport(hp, socktype, 1)) {
ai = hp->addrinfo;
hp->addrinfo = NULL;
}
- resolve_freehostport(hp);
+ freehostport(hp);
return ai;
}
@@ -203,3 +228,39 @@ static int prefixmatch(void *a1, void *a2, uint8_t len) {
return 1;
return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]);
}
+
+int addressmatches(struct list *hostports, struct sockaddr *addr) {
+ struct sockaddr_in6 *sa6 = NULL;
+ struct in_addr *a4 = NULL;
+ struct addrinfo *res;
+ struct list_node *entry;
+ struct hostportres *hp = NULL;
+
+ if (addr->sa_family == AF_INET6) {
+ sa6 = (struct sockaddr_in6 *)addr;
+ if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
+ a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
+ sa6 = NULL;
+ }
+ } else
+ a4 = &((struct sockaddr_in *)addr)->sin_addr;
+
+ for (entry = list_first(hostports); entry; entry = list_next(entry)) {
+ hp = (struct hostportres *)entry->data;
+ for (res = hp->addrinfo; res; res = res->ai_next)
+ if (hp->prefixlen == 255) {
+ if ((a4 && res->ai_family == AF_INET &&
+ !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
+ (sa6 && res->ai_family == AF_INET6 &&
+ !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
+ return 1;
+ } else {
+ if ((a4 && res->ai_family == AF_INET &&
+ prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, hp->prefixlen)) ||
+ (sa6 && res->ai_family == AF_INET6 &&
+ prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, hp->prefixlen)))
+ return 1;
+ }
+ }
+ return 0;
+}
generated by cgit v1.1 at 2024-12-26 19:40:09 +0000