Extended comstack with outgoing IP YAZ-795

diff --git a/client/client.c b/client/client.c
index 596b76a..d64884c 100644 (file)
--- a/client/client.c
+++ b/client/client.c
@@ -151,6 +151,7 @@ static Odr_int last_hit_count = 0;
 static int pretty_xml = 0;
 static Odr_int sru_maximumRecords = 0;
 static yaz_cookies_t yaz_cookies = 0;
+static char *bind_host = 0;
 
 typedef enum {
     QueryType_Prefix,
@@ -703,7 +704,7 @@ static int session_connect_base(const char *arg, const char **basep)
     strncpy(type_and_host, arg, sizeof(type_and_host)-1);
     type_and_host[sizeof(type_and_host)-1] = '\0';
 
-    conn = cs_create_host_proxy(arg, 1, &add, yazProxy);
+    conn = cs_create_host2(arg, 1, &add, yazProxy, bind_host);
     if (!conn)
     {
         printf("Could not resolve address %s\n", arg);
@@ -755,6 +756,15 @@ static int session_connect(void)
     return r;
 }
 
+static int cmd_bind(const char *arg)
+{
+    xfree(bind_host);
+    bind_host = 0;
+    if (arg && *arg)
+        bind_host = xstrdup(arg);
+    return 0;
+}
+
 static int cmd_open(const char *arg)
 {
     int r;
@@ -5051,6 +5061,7 @@ static struct {
     {"init", cmd_init, "", NULL,0,NULL},
     {"sru", cmd_sru, "<method> <version>", NULL,0,NULL},
     {"url", cmd_url, "<url>", NULL,0,NULL},
+    {"bind", cmd_bind, "<host>", NULL,0,NULL},
     {"exit", cmd_quit, "",NULL,0,NULL},
     {0,0,0,0,0,0}
 };

diff --git a/include/yaz/comstack.h b/include/yaz/comstack.h
index 2b4b4d5..e3dada7 100644 (file)
--- a/include/yaz/comstack.h
+++ b/include/yaz/comstack.h
@@ -123,6 +123,10 @@ YAZ_EXPORT COMSTACK cs_create_host(const char *type_and_host,
 YAZ_EXPORT COMSTACK cs_create_host_proxy(const char *vhost,
                                          int blocking, void **vp,
                                          const char *proxy_host);
+YAZ_EXPORT COMSTACK cs_create_host2(const char *vhost,
+                                    int blocking, void **vp,
+                                    const char *proxy_host,
+                                    const char *bind_host);
 YAZ_EXPORT void cs_get_host_args(const char *type_and_host, const char **args);
 YAZ_EXPORT int cs_complete_auto_head(const char *buf, int len);
 YAZ_EXPORT int cs_complete_auto(const char *buf, int len);

diff --git a/include/yaz/tcpip.h b/include/yaz/tcpip.h
index 812ee2c..d744009 100644 (file)
--- a/include/yaz/tcpip.h
+++ b/include/yaz/tcpip.h
@@ -41,6 +41,9 @@ YAZ_EXPORT COMSTACK tcpip_type(int s, int flags, int protocol, void *vp);
 YAZ_EXPORT COMSTACK ssl_type(int s, int flags, int protocol, void *vp);
 YAZ_EXPORT COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
                                      const char *connect_host);
+YAZ_EXPORT COMSTACK yaz_tcpip_create2(int s, int flags, int protocol,
+                                      const char *connect_host,
+                                      const char *bind_host);
 
 YAZ_END_CDECL
 

diff --git a/src/comstack.c b/src/comstack.c
index d364f05..ee64fc8 100644 (file)
--- a/src/comstack.c
+++ b/src/comstack.c
@@ -175,8 +175,8 @@ COMSTACK cs_create_host(const char *vhost, int blocking, void **vp)
     return cs_create_host_proxy(vhost, blocking, vp, 0);
 }
 
-COMSTACK cs_create_host_proxy(const char *vhost, int blocking, void **vp,
-                              const char *proxy_host)
+COMSTACK cs_create_host2(const char *vhost, int blocking, void **vp,
+                         const char *proxy_host, const char *bind_host)
 {
     enum oid_proto proto = PROTO_Z3950;
     const char *host = 0;
@@ -198,7 +198,8 @@ COMSTACK cs_create_host_proxy(const char *vhost, int blocking, void **vp,
 
     if (t == tcpip_type)
     {
-        cs = yaz_tcpip_create(-1, blocking, proto, connect_host ? host : 0);
+        cs = yaz_tcpip_create2(-1, blocking, proto, connect_host ? host : 0,
+                               bind_host);
     }
     else
     {
@@ -216,6 +217,12 @@ COMSTACK cs_create_host_proxy(const char *vhost, int blocking, void **vp,
     return cs;
 }
 
+COMSTACK cs_create_host_proxy(const char *vhost, int blocking, void **vp,
+                              const char *proxy_host)
+{
+    return cs_create_host2(vhost, blocking, vp, proxy_host, 0);
+}
+
 int cs_look (COMSTACK cs)
 {
     return cs->event;

diff --git a/src/tcpip.c b/src/tcpip.c
index ab9f6c4..6d00525 100644 (file)
--- a/src/tcpip.c
+++ b/src/tcpip.c
@@ -90,6 +90,12 @@ static int ssl_get(COMSTACK h, char **buf, int *bufsize);
 static int ssl_put(COMSTACK h, char *buf, int size);
 #endif
 
+
+#if HAVE_GETADDRINFO
+struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port,
+                                   int *ipv6_only);
+#endif
+
 static COMSTACK tcpip_accept(COMSTACK h);
 static const char *tcpip_addrstr(COMSTACK h);
 static void *tcpip_straddr(COMSTACK h, const char *str);
@@ -125,6 +131,7 @@ typedef struct tcpip_state
     struct addrinfo *ai;
     struct addrinfo *ai_connect;
     int ipv6_only;
+    char *bind_host;
 #if RESOLVER_THREAD
     int pipefd[2];
     char *hoststr;
@@ -179,6 +186,7 @@ static struct tcpip_state *tcpip_state_create(void)
 #if HAVE_GETADDRINFO
     sp->ai = 0;
     sp->ai_connect = 0;
+    sp->bind_host = 0;
 #if RESOLVER_THREAD
     sp->hoststr = 0;
     sp->pipefd[0] = sp->pipefd[1] = -1;
@@ -243,12 +251,18 @@ COMSTACK tcpip_type(int s, int flags, int protocol, void *vp)
     return p;
 }
 
-COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
-                          const char *connect_host)
+COMSTACK yaz_tcpip_create2(int s, int flags, int protocol,
+                           const char *connect_host,
+                           const char *bind_host)
 {
     COMSTACK p = tcpip_type(s, flags, protocol, 0);
     if (!p)
         return 0;
+    if (bind_host)
+    {
+        tcpip_state *sp = (tcpip_state *) p->cprivate;
+        sp->bind_host = xstrdup(bind_host);
+    }
     if (connect_host)
     {
         tcpip_state *sp = (tcpip_state *) p->cprivate;
@@ -263,6 +277,12 @@ COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
     return p;
 }
 
+COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
+                          const char *connect_host)
+{
+    return yaz_tcpip_create2(s, flags, protocol, connect_host, 0);
+}
+
 #if HAVE_GNUTLS_H
 static void tcpip_create_cred(COMSTACK cs)
 {
@@ -456,6 +476,27 @@ static struct addrinfo *create_net_socket(COMSTACK h)
         return 0;
     if (!tcpip_set_blocking(h, h->flags))
         return 0;
+    if (sp->bind_host)
+    {
+        int r;
+        int ipv6_only = 0;
+        struct addrinfo *ai = tcpip_getaddrinfo(sp->bind_host, "210",
+                                                &ipv6_only);
+        if (!ai)
+            return 0;
+        r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
+        if (r)
+        {
+            int xerrno = errno;
+            if (xerrno == EINVAL)
+                fprintf(stderr, "bind returned EINVAL\n");
+            fprintf(stderr, "bind failed errno=%d %s\n", xerrno,
+                    strerror(xerrno));
+            freeaddrinfo(ai);
+            return 0;
+        }
+        freeaddrinfo(ai);
+    }
     return ai;
 }
 
@@ -1325,6 +1366,7 @@ void tcpip_close(COMSTACK h)
 
     TRC(fprintf(stderr, "tcpip_close: h=%p pid=%d\n", h, getpid()));
 #if HAVE_GETADDRINFO
+    xfree(sp->bind_host);
 #if RESOLVER_THREAD
     if (sp->pipefd[0] != -1)
     {