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-rw-r--r--src/ipcpd/ipcp.c4
-rw-r--r--src/ipcpd/ipcp.h3
-rw-r--r--src/ipcpd/shim-udp/main.c341
-rw-r--r--src/irmd/main.c69
-rw-r--r--src/lib/ipcpd_messages.proto1
-rw-r--r--src/lib/irmd_messages.proto3
-rw-r--r--src/tools/echo/echo_server.c5
7 files changed, 395 insertions, 31 deletions
diff --git a/src/ipcpd/ipcp.c b/src/ipcpd/ipcp.c
index 0b652ff6..e0dac20b 100644
--- a/src/ipcpd/ipcp.c
+++ b/src/ipcpd/ipcp.c
@@ -174,8 +174,8 @@ int ipcp_main_loop(struct ipcp * _ipcp)
LOG_ERR("Flow_alloc unsupported.");
break;
}
- ret_msg.has_result = true;
- ret_msg.result = _ipcp->ops->ipcp_flow_alloc(
+ ret_msg.has_fd = true;
+ ret_msg.fd = _ipcp->ops->ipcp_flow_alloc(
msg->port_id,
msg->dst_ap_name,
msg->ap_name,
diff --git a/src/ipcpd/ipcp.h b/src/ipcpd/ipcp.h
index 9decac8b..f640d78b 100644
--- a/src/ipcpd/ipcp.h
+++ b/src/ipcpd/ipcp.h
@@ -26,6 +26,9 @@
#include "ipcp-ops.h"
#include "ipcp-data.h"
+/* needed to run over shim DIFs */
+#define ANONYMOUS_AP "__ANONYMOUS__"
+
enum ipcp_state {
IPCP_INIT = 0,
IPCP_ENROLLING,
diff --git a/src/ipcpd/shim-udp/main.c b/src/ipcpd/shim-udp/main.c
index df731490..14b08ba8 100644
--- a/src/ipcpd/shim-udp/main.c
+++ b/src/ipcpd/shim-udp/main.c
@@ -29,6 +29,7 @@
#include <ouroboros/utils.h>
#include <ouroboros/ipcp.h>
#include <ouroboros/dif_config.h>
+#include <ouroboros/sockets.h>
#define OUROBOROS_PREFIX "ipcpd/shim-udp"
@@ -36,6 +37,7 @@
#include <string.h>
#include <sys/socket.h>
+#include <sys/select.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/in.h>
@@ -44,9 +46,15 @@
#include <pthread.h>
#define THIS_TYPE IPCP_SHIM_UDP
+#define LISTEN_PORT htons(0x0D1F)
+#define SHIM_UDP_BUF_SIZE 256
+#define SHIM_UDP_MAX_SDU_SIZE 8980
#define shim_data(type) ((struct ipcp_udp_data *) type->data)
+#define local_ip (((struct ipcp_udp_data *) \
+ _ipcp->data)->s_saddr.sin_addr.s_addr)
+
/* global for trapping signal */
int irmd_pid;
@@ -64,16 +72,19 @@ struct ipcp_udp_data {
uint32_t ip_addr;
uint32_t dns_addr;
+ /* listen server */
+ struct sockaddr_in s_saddr;
+ int s_fd;
+
+ fd_set flow_fd_s;
+ flow_t * fd_to_flow_ptr[FD_SETSIZE];
+
pthread_mutex_t lock;
};
struct udp_flow {
/* FLOW MUST BE FIRST !!!! */
flow_t flow;
-
- uint16_t localport;
-
- struct sockaddr_in * remote;
int fd;
};
@@ -100,6 +111,7 @@ struct ipcp_udp_data * ipcp_udp_data_create(char * ap_name,
struct ipcp_data * data;
instance_name_t * instance_name;
enum ipcp_type ipcp_type;
+ int n;
instance_name = instance_name_create();
if (instance_name == NULL) {
@@ -110,12 +122,12 @@ struct ipcp_udp_data * ipcp_udp_data_create(char * ap_name,
instance_name = instance_name_init_with(
instance_name, ap_name, (uint16_t)atoi(ap_id));
- if (instance_name == NULL) {
+ if (instance_name == NULL) {
LOG_ERR("Failed to create instance name struct.");
return NULL;
}
- udp_data= malloc (sizeof *udp_data);
+ udp_data = malloc(sizeof *udp_data);
if (udp_data == NULL) {
LOG_DBGF("Failed to allocate.");
return NULL;
@@ -128,13 +140,170 @@ struct ipcp_udp_data * ipcp_udp_data_create(char * ap_name,
return NULL;
}
+ FD_ZERO(&udp_data->flow_fd_s);
+ for (n = 0; n < FD_SETSIZE; ++n)
+ udp_data->fd_to_flow_ptr[n] = NULL;
+
return udp_data;
}
+static void * ipcp_udp_listener()
+{
+ char buf[SHIM_UDP_BUF_SIZE];
+ int n = 0;
+
+ struct sockaddr_in f_saddr;
+ struct sockaddr_in c_saddr;
+ struct hostent * hostp;
+ struct udp_flow * flow;
+ int sfd = shim_data(_ipcp)->s_fd;
+
+ irm_msg_t msg = IRM_MSG__INIT;
+ irm_msg_t * ret_msg ;
+
+ while (true) {
+ n = sizeof c_saddr;
+ n = recvfrom(sfd, buf, SHIM_UDP_BUF_SIZE, 0,
+ (struct sockaddr *) &c_saddr, (unsigned *) &n);
+ if (n < 0)
+ continue;
+
+ /* flow alloc request from other host */
+ hostp = gethostbyaddr((const char *)&c_saddr.sin_addr.s_addr,
+ sizeof(c_saddr.sin_addr.s_addr), AF_INET);
+ if (hostp == NULL)
+ continue;
+
+ /* create a new socket for the server */
+ flow = malloc(sizeof *flow);
+ if (flow == NULL)
+ continue;
+
+ flow->fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ if (flow->fd == -1) {
+ free(flow);
+ continue;
+ }
+
+ memset((char *)&f_saddr, 0, sizeof f_saddr);
+ f_saddr.sin_family = AF_INET;
+ f_saddr.sin_addr.s_addr = local_ip;
+
+ /*
+ * FIXME: we could have a port dedicated per registered AP
+ * Not that critical for UDP, but will be for LLC
+ */
+
+ f_saddr.sin_port = 0;
+
+ /*
+ * store the remote address in the file descriptor
+ * this avoids having to store the sockaddr_in in
+ * the flow structure
+ */
+
+ if (connect(flow->fd,
+ (struct sockaddr *)&c_saddr, sizeof c_saddr) < 0) {
+ close(flow->fd);
+ free(flow);
+ continue;
+ }
+
+ /* reply to IRM */
+
+ msg.code = IRM_MSG_CODE__IPCP_FLOW_REQ_ARR;
+ msg.ap_name = ANONYMOUS_AP;
+ msg.ae_name = ""; /* no AE */
+ msg.has_reg_ap_id = true;
+ msg.reg_ap_id = ipcp_data_get_reg_ap_id(_ipcp->data, buf);
+
+ ret_msg = send_recv_irm_msg(&msg);
+ if (ret_msg == NULL) {
+ LOG_ERR("Could not send message to IRM.");
+ close(flow->fd);
+ free(flow);
+ continue;
+ }
+
+ if (!ret_msg->has_port_id) {
+ LOG_ERR("Didn't get port_id.");
+ free(ret_msg);
+ close(flow->fd);
+ free(flow);
+ continue;
+ }
+
+ flow->flow.port_id = ret_msg->port_id;
+ flow->flow.oflags = FLOW_O_DEFAULT;
+ flow->flow.state = FLOW_PENDING;
+
+ if(ipcp_data_add_flow(_ipcp->data, (flow_t *) flow)) {
+ LOG_DBGF("Could not add flow.");
+ free(ret_msg);
+ close(flow->fd);
+ free(flow);
+ continue;
+ }
+
+ FD_SET(flow->fd, &shim_data(_ipcp)->flow_fd_s);
+ shim_data(_ipcp)->fd_to_flow_ptr[flow->fd] = &flow->flow;
+
+ }
+}
+
+static void * ipcp_udp_sdu_reader()
+{
+ int n;
+ int fd;
+ char buf[SHIM_UDP_MAX_SDU_SIZE];
+
+ struct sockaddr_in r_saddr;
+
+ while (true) {
+ flow_t * flow;
+
+ if (select(FD_SETSIZE,
+ &shim_data(_ipcp)->flow_fd_s,
+ NULL, NULL, NULL)
+ < 0)
+ continue;
+
+ for (fd = 0; fd < FD_SETSIZE; ++fd) {
+ if (!FD_ISSET(fd, &shim_data(_ipcp)->flow_fd_s))
+ continue;
+
+ n = sizeof r_saddr;
+ n = recvfrom(fd,
+ buf,
+ SHIM_UDP_MAX_SDU_SIZE,
+ 0,
+ (struct sockaddr *) &r_saddr,
+ (unsigned *) &n);
+
+ flow = shim_data(_ipcp)->fd_to_flow_ptr[fd];
+ if (flow->state == FLOW_PENDING) {
+ if (connect(fd,
+ (struct sockaddr *)&r_saddr,
+ sizeof r_saddr)
+ < 0)
+ continue;
+ flow->state = FLOW_ALLOCATED;
+ }
+
+ /* send the sdu to the correct port_id */
+ LOG_MISSING;
+ }
+ }
+
+ return (void *) 0;
+}
+
int ipcp_udp_bootstrap(struct dif_config * conf)
{
char ipstr[INET_ADDRSTRLEN];
char dnsstr[INET_ADDRSTRLEN];
+ pthread_t handler;
+ pthread_t sdu_reader;
if (conf->type != THIS_TYPE) {
LOG_ERR("Config doesn't match IPCP type.");
@@ -162,6 +331,28 @@ int ipcp_udp_bootstrap(struct dif_config * conf)
shim_data(_ipcp)->ip_addr = conf->ip_addr;
shim_data(_ipcp)->dns_addr = conf->dns_addr;
+ /* UDP listen server */
+
+ if ((shim_data(_ipcp)->s_fd =
+ socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) {
+ LOG_DBGF("Can't create socket.");
+ return -1;
+ }
+
+ shim_data(_ipcp)->s_saddr.sin_family = AF_INET;
+ shim_data(_ipcp)->s_saddr.sin_addr.s_addr = conf->ip_addr;
+ shim_data(_ipcp)->s_saddr.sin_port = LISTEN_PORT;
+
+ if (bind(shim_data(_ipcp)->s_fd,
+ (struct sockaddr *)&shim_data(_ipcp)->s_saddr,
+ sizeof shim_data(_ipcp)->s_saddr ) < 0) {
+ LOG_ERR("Couldn't bind to %s.", ipstr);
+ return -1;
+ }
+
+ pthread_create(&handler, NULL, ipcp_udp_listener, NULL);
+ pthread_create(&sdu_reader, NULL, ipcp_udp_sdu_reader, NULL);
+
_ipcp->state = IPCP_ENROLLED;
LOG_DBG("Bootstrapped shim IPCP over UDP %s-%d.",
@@ -175,8 +366,6 @@ int ipcp_udp_bootstrap(struct dif_config * conf)
int ipcp_udp_ap_reg(char * ap_name, uint32_t reg_ap_id)
{
- LOG_DBG("Registering local ap %s, %u.", ap_name, reg_ap_id);
-
if (_ipcp->state != IPCP_ENROLLED) {
LOG_DBGF("Won't register with non-enrolled IPCP.");
return -1;
@@ -187,6 +376,9 @@ int ipcp_udp_ap_reg(char * ap_name, uint32_t reg_ap_id)
return -1;
}
+ LOG_DBG("Registered local ap %s, %u.", ap_name, reg_ap_id);
+
+ /* FIXME: register application with DNS server */
LOG_MISSING;
return 0;
@@ -194,17 +386,11 @@ int ipcp_udp_ap_reg(char * ap_name, uint32_t reg_ap_id)
int ipcp_udp_ap_unreg(uint32_t reg_ap_id)
{
- char * name = strdup(ipcp_data_get_reg_ap_name(_ipcp->data,
- reg_ap_id));
- LOG_DBG("Unregistering %s.", name);
-
ipcp_data_del_reg_entry(_ipcp->data, reg_ap_id);
- /* we are using dns */
+ /* FIXME: unregister application from DNS server */
LOG_MISSING;
- free (name);
-
return 0;
}
@@ -214,11 +400,132 @@ int ipcp_udp_flow_alloc(uint32_t port_id,
char * src_ae_name,
struct qos_spec * qos)
{
+ struct udp_flow * flow = NULL;
+ struct sockaddr_in l_saddr;
+ struct sockaddr_in r_saddr;
+
+ irm_msg_t msg = IRM_MSG__INIT;
+ irm_msg_t * ret_msg = NULL;
+
+ if (dst_ap_name == NULL || src_ap_name == NULL || src_ae_name == NULL)
+ return -1;
+
+ LOG_DBG("Received flow allocation request from %s to %s.",
+ src_ap_name, dst_ap_name);
+
+ if (strlen(dst_ap_name) > 255
+ || strlen(src_ap_name) > 255
+ || strlen(src_ae_name) > 255) {
+ LOG_ERR("Name too long for this shim.");
+ return -1;
+ }
+
+ if (qos != NULL)
+ LOG_DBGF("QoS requested. UDP/IP can't do that.");
+
+ flow = malloc(sizeof *flow);
+ if (flow == NULL)
+ return -1;
+
+ flow->fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ if (flow->fd == -1) {
+ free(flow);
+ return -1;
+ }
+
+ /* this socket is for the flow */
+ memset((char *)&l_saddr, 0, sizeof l_saddr);
+ l_saddr.sin_family = AF_INET;
+ l_saddr.sin_addr.s_addr = local_ip;
+ l_saddr.sin_port = 0;
+
+ if (bind(flow->fd, (struct sockaddr *) &l_saddr, sizeof l_saddr) < 0) {
+ char ipstr[INET_ADDRSTRLEN];
+ inet_ntop(AF_INET,
+ &l_saddr.sin_addr.s_addr,
+ ipstr,
+ INET_ADDRSTRLEN);
+ close(flow->fd);
+ free(flow);
+ return -1;
+ }
+
+ /* FIXME: use calls to specify DDNS server */
+
+#define IP_ADDR 0x7f000001; /* localhost */
+
+ LOG_MISSING;
+
+ memset((char *)&r_saddr, 0, sizeof r_saddr);
+ r_saddr.sin_family = AF_INET;
+ /* FIXME: pull in correct IP address */
+ r_saddr.sin_addr.s_addr = IP_ADDR; /* FIXME */
+ r_saddr.sin_port = LISTEN_PORT;
+
+ /* at least try to get the packet on the wire */
+ while (sendto(flow->fd, dst_ap_name, strlen(dst_ap_name), 0,
+ (struct sockaddr *) &r_saddr, sizeof r_saddr) < 0)
+
+ flow->flow.port_id = port_id;
+ flow->flow.oflags = FLOW_O_DEFAULT;
+ flow->flow.state = FLOW_PENDING;
+
+ /* add flow to the list */
+
+ pthread_mutex_lock(&_ipcp->data->flow_lock);
+
+ if(ipcp_data_add_flow(_ipcp->data, (flow_t *)flow)) {
+ LOG_DBGF("Could not add flow.");
+ pthread_mutex_unlock(&_ipcp->data->flow_lock);
+ close(flow->fd);
+ free(flow);
+ return -1;
+ }
+
+ pthread_mutex_unlock(&_ipcp->data->flow_lock);
+
+ /* tell IRMd that flow allocation "worked" */
+
+ msg.code = IRM_MSG_CODE__IPCP_FLOW_ALLOC_REPLY;
+ msg.has_port_id = true;
+ msg.port_id = flow->flow.port_id;
+ msg.has_response = true;
+ msg.response = 0;
+
+ ret_msg = send_recv_irm_msg(&msg);
+ if (ret_msg == NULL) {
+ close(flow->fd);
+ ipcp_data_del_flow(_ipcp->data, flow->flow.port_id);
+ return -1;
+ }
+
+ FD_SET(flow->fd, &shim_data(_ipcp)->flow_fd_s);
+ shim_data(_ipcp)->fd_to_flow_ptr[flow->fd] = &flow->flow;
+
return 0;
}
+
int ipcp_udp_flow_alloc_resp(uint32_t port_id,
- int result)
+ int response)
{
+ struct udp_flow * flow =
+ (struct udp_flow *) ipcp_data_find_flow(_ipcp->data, port_id);
+ if (flow == NULL) {
+ return -1;
+ }
+
+ if (response) {
+ ipcp_data_del_flow(_ipcp->data, port_id);
+ return 0;
+ }
+
+ /* awaken pending flow */
+
+ if (flow->flow.state != FLOW_PENDING)
+ return -1;
+
+ flow->flow.state = FLOW_ALLOCATED;
+
return 0;
}
@@ -255,7 +562,7 @@ struct ipcp * ipcp_udp_create(char * ap_name, char * i_id)
return NULL;
}
- ops = malloc (sizeof *ops);
+ ops = malloc(sizeof *ops);
if (ops == NULL) {
free(data);
free(i);
diff --git a/src/irmd/main.c b/src/irmd/main.c
index 13076cd1..374bfb6c 100644
--- a/src/irmd/main.c
+++ b/src/irmd/main.c
@@ -87,6 +87,24 @@ static struct ipcp_entry * find_ipcp_by_name(instance_name_t * api)
return tmp;
}
+static pid_t find_pid_by_dif_name(char * dif_name)
+{
+ struct list_head * pos = NULL;
+
+ list_for_each(pos, &instance->ipcps) {
+ struct ipcp_entry * tmp =
+ list_entry(pos, struct ipcp_entry, next);
+
+ if (tmp->dif_name == NULL)
+ return tmp->pid;
+
+ if (strcmp(dif_name, tmp->dif_name) == 0)
+ return tmp->pid;
+ }
+
+ return 0;
+}
+
static int create_ipcp(instance_name_t * api,
enum ipcp_type ipcp_type)
{
@@ -266,7 +284,41 @@ static int ap_reg(char * ap_name,
char ** difs,
size_t difs_size)
{
- return -1;
+ pid_t pid = 0;
+ int i;
+ int ret = 0;
+
+ if (instance->ipcps.next == NULL)
+ LOG_ERR("No IPCPs in this system.");
+
+ /*
+ * FIXME: this should be resolved by NSM
+ * Now it just takes the first DIF
+ */
+
+ if (strcmp(difs[0], "*") == 0) {
+ difs[0] = list_entry(instance->ipcps.next,
+ struct ipcp_entry,
+ next)->dif_name;
+ difs_size = 1;
+ }
+
+ for (i = 0; i < difs_size; ++i) {
+ pid = find_pid_by_dif_name(difs[i]);
+ if (pid == 0) {
+ LOG_ERR("%s: No such DIF.", difs[i]);
+ continue;
+ }
+
+ /* FIXME: get proper reg_ap_id */
+ if (ipcp_ap_reg(pid, rand(),ap_name)) {
+ LOG_ERR("Could not register %s in DIF %s.",
+ ap_name, difs[i]);
+ ret = -1;
+ }
+ }
+
+ return ret;
}
static int ap_unreg(char * ap_name,
@@ -366,7 +418,6 @@ int main()
sigaction(SIGTERM, &sig_act, NULL);
sigaction(SIGHUP, &sig_act, NULL);
-
if (access("/dev/shm/" SHM_DU_MAP_FILENAME, F_OK) != -1)
unlink("/dev/shm/" SHM_DU_MAP_FILENAME);
@@ -480,8 +531,8 @@ int main()
msg->oflags);
break;
case IRM_MSG_CODE__IRM_FLOW_ALLOC_RES:
- ret_msg.has_result = true;
- ret_msg.result = flow_alloc_res(msg->fd);
+ ret_msg.has_response = true;
+ ret_msg.response = flow_alloc_res(msg->fd);
break;
case IRM_MSG_CODE__IRM_FLOW_DEALLOC:
ret_msg.has_result = true;
@@ -493,15 +544,15 @@ int main()
msg->oflags);
break;
case IRM_MSG_CODE__IPCP_FLOW_REQ_ARR:
- ret_msg.has_fd = true;
- ret_msg.fd = flow_req_arr(msg->port_id,
- msg->ap_name,
- msg->ae_name);
+ ret_msg.has_port_id = true;
+ ret_msg.port_id = flow_req_arr(msg->port_id,
+ msg->ap_name,
+ msg->ae_name);
break;
case IRM_MSG_CODE__IPCP_FLOW_ALLOC_REPLY:
ret_msg.has_result = true;
ret_msg.result = flow_alloc_reply(msg->port_id,
- msg->result);
+ msg->response);
break;
case IRM_MSG_CODE__IPCP_FLOW_DEALLOC:
ret_msg.has_result = true;
diff --git a/src/lib/ipcpd_messages.proto b/src/lib/ipcpd_messages.proto
index 796638c7..850c64e4 100644
--- a/src/lib/ipcpd_messages.proto
+++ b/src/lib/ipcpd_messages.proto
@@ -26,4 +26,5 @@ message ipcp_msg {
optional string ae_name = 10;
optional dif_config_msg conf = 11;
optional int32 result = 12;
+ optional int32 fd = 13;
};
diff --git a/src/lib/irmd_messages.proto b/src/lib/irmd_messages.proto
index 92ea439e..d484a007 100644
--- a/src/lib/irmd_messages.proto
+++ b/src/lib/irmd_messages.proto
@@ -31,11 +31,12 @@ message irm_msg {
optional uint32 ipcp_type = 5;
repeated string dif_name = 6;
optional int32 fd = 7;
- optional int32 result = 8;
+ optional int32 response = 8;
optional int32 oflags = 9;
optional string dst_ap_name = 10;
optional uint32 port_id = 11;
optional uint32 reg_ap_id = 12;
optional int32 pid = 13;
optional dif_config_msg conf = 14;
+ optional int32 result = 15;
};
diff --git a/src/tools/echo/echo_server.c b/src/tools/echo/echo_server.c
index b1547d8c..e457e22b 100644
--- a/src/tools/echo/echo_server.c
+++ b/src/tools/echo/echo_server.c
@@ -64,15 +64,16 @@ int server_main()
return -1;
}
+ printf("Echo server started...\n");
+
while (true) {
client_fd = flow_accept(server_fd,
client_name, NULL);
if (client_fd < 0) {
- printf("Failed to accept flow\n");
continue;
}
- printf("New flow from %s", client_name);
+ printf("New flow from %s\n", client_name);
if (flow_alloc_resp(client_fd, 0)) {
printf("Failed to give an allocate response\n");
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-23 18:58:09 +0000