lib: Split authentication from CACEP

By removing authentication as part of CACEP, all policies
disappear. CACEP becomes a policy-free connection establishment
protocol between Application Entities.  Authentication can later be
added cleanly as a pure policy function when needed.

8 files changed, 69 insertions, 131 deletions

diff --git a/src/ipcpd/normal/cdap_flow.c b/src/ipcpd/normal/cdap_flow.c
index 3d1b2b22..d3d98884 100644
--- a/src/ipcpd/normal/cdap_flow.c
+++ b/src/ipcpd/normal/cdap_flow.c
@@ -29,6 +29,7 @@
 #include "cdap_flow.h"
 
 #include <stdlib.h>
+#include <string.h>
 #include <assert.h>
 
 static void cdap_flow_destroy(struct cdap_flow * flow)
@@ -37,20 +38,15 @@ static void cdap_flow_destroy(struct cdap_flow * flow)
 
         if (flow->ci != NULL)
                 cdap_destroy(flow->ci);
-        if (flow->info != NULL) {
-                conn_info_fini(flow->info);
-                free(flow->info);
-        }
 
         free(flow);
 }
 
-struct cdap_flow * cdap_flow_arr(int                     fd,
+struct cdap_flow * cdap_flow_arr(int                      fd,
                                  int                      resp,
-                                 enum pol_cacep           pc,
                                  const struct conn_info * info)
 {
-        struct cdap_flow *  flow;
+        struct cdap_flow * flow;
 
         if (flow_alloc_resp(fd, resp) < 0) {
                 log_err("Could not respond to new flow.");
@@ -66,12 +62,13 @@ struct cdap_flow * cdap_flow_arr(int                     fd,
                 return NULL;
         }
 
+        memset(&flow->info, 0, sizeof(flow->info));
+
         flow->fd = fd;
         flow->ci = NULL;
 
-        flow->info = cacep_auth_wait(fd, pc, info, NULL);
-        if (flow->info == NULL) {
-                log_err("Other side failed to authenticate.");
+        if (cacep_listen(fd, info, &flow->info)) {
+                log_err("Error establishing application connection.");
                 cdap_flow_destroy(flow);
                 return NULL;
         }
@@ -88,7 +85,6 @@ struct cdap_flow * cdap_flow_arr(int                     fd,
 
 struct cdap_flow * cdap_flow_alloc(const char *             dst_name,
                                    qosspec_t *              qs,
-                                   enum pol_cacep           pc,
                                    const struct conn_info * info)
 {
         struct cdap_flow *  flow;
@@ -119,12 +115,13 @@ struct cdap_flow * cdap_flow_alloc(const char *             dst_name,
                 return NULL;
         }
 
+        memset(&flow->info, 0, sizeof(flow->info));
+
         flow->fd = fd;
         flow->ci = NULL;
 
-        flow->info = cacep_auth(fd, pc, info, NULL);
-        if (flow->info == NULL) {
-                log_err("Failed to authenticate.");
+        if (cacep_connect(fd, info, &flow->info)) {
+                log_err("Failed to connect to application.");
                 cdap_flow_dealloc(flow);
                 return NULL;
         }
diff --git a/src/ipcpd/normal/cdap_flow.h b/src/ipcpd/normal/cdap_flow.h
index 8aa26dc0..761f3463 100644
--- a/src/ipcpd/normal/cdap_flow.h
+++ b/src/ipcpd/normal/cdap_flow.h
@@ -28,19 +28,17 @@
 #include <ouroboros/qos.h>
 
 struct cdap_flow {
-        int                 fd;
-        struct cdap *       ci;
-        struct conn_info * info;
+        int              fd;
+        struct cdap *    ci;
+        struct conn_info info;
 };
 
 struct cdap_flow * cdap_flow_arr(int                      fd,
                                  int                      resp,
-                                 enum pol_cacep           pc,
                                  const struct conn_info * info);
 
 struct cdap_flow * cdap_flow_alloc(const char *             dst_name,
                                    qosspec_t *              qs,
-                                   enum pol_cacep           pc,
                                    const struct conn_info * info);
 
 void               cdap_flow_dealloc(struct cdap_flow * flow);
diff --git a/src/ipcpd/normal/enroll.c b/src/ipcpd/normal/enroll.c
index b420533e..5c7ebd7e 100644
--- a/src/ipcpd/normal/enroll.c
+++ b/src/ipcpd/normal/enroll.c
@@ -44,7 +44,7 @@
 int enroll_handle(int fd)
 {
         struct cdap_flow * flow;
-        struct conn_info  info;
+        struct conn_info   info;
         cdap_key_t         key;
         enum cdap_opcode   oc;
         char *             name;
@@ -61,27 +61,20 @@ int enroll_handle(int fd)
         char * members_ro = MEMBERS_PATH;
         char * dif_ro     = DIF_PATH;
 
-        conn_info_init(&info);
+        memset(&info, 0, sizeof(info));
 
-        info.proto.protocol = strdup(CDAP_PROTO);
-        if (info.proto.protocol == NULL) {
-                conn_info_fini(&info);
-                return -ENOMEM;
-        }
-
-        info.proto.pref_version = 1;
-        info.proto.pref_syntax  = PROTO_GPB;
+        strcpy(info.ae_name, ENROLL_AE);
+        strcpy(info.protocol, CDAP_PROTO);
+        info.pref_version = 1;
+        info.pref_syntax = PROTO_GPB;
 
-        flow = cdap_flow_arr(fd, 0, ANONYMOUS_AUTH, &info);
+        flow = cdap_flow_arr(fd, 0, &info);
         if (flow == NULL) {
                 log_err("Failed to auth enrollment request.");
-                conn_info_fini(&info);
                 flow_dealloc(fd);
                 return -1;
         }
 
-        conn_info_fini(&info);
-
         while (!(boot_r && members_r && dif_name_r)) {
                 key = cdap_request_wait(flow->ci, &oc, &name, &data,
                                         (size_t *) &len , &flags);
@@ -156,7 +149,7 @@ int enroll_handle(int fd)
 int enroll_boot(char * dst_name)
 {
         struct cdap_flow * flow;
-        struct conn_info  info;
+        struct conn_info   info;
         cdap_key_t         key;
         uint8_t *          data;
         size_t             len;
@@ -170,26 +163,19 @@ int enroll_boot(char * dst_name)
         char * members_ro = MEMBERS_PATH;
         char * dif_ro     = DIF_PATH;
 
-        conn_info_init(&info);
+        memset(&info, 0, sizeof(info));
 
-        info.proto.protocol = strdup(CDAP_PROTO);
-        if (info.proto.protocol == NULL) {
-                conn_info_fini(&info);
-                return -ENOMEM;
-        }
-
-        info.proto.pref_version = 1;
-        info.proto.pref_syntax  = PROTO_GPB;
+        strcpy(info.ae_name, ENROLL_AE);
+        strcpy(info.protocol, CDAP_PROTO);
+        info.pref_version = 1;
+        info.pref_syntax  = PROTO_GPB;
 
-        flow = cdap_flow_alloc(dst_name, NULL, ANONYMOUS_AUTH, &info);
+        flow = cdap_flow_alloc(dst_name, NULL, &info);
         if (flow == NULL) {
                 log_err("Failed to allocate flow for enrollment request.");
-                conn_info_fini(&info);
                 return -1;
         }
 
-        conn_info_fini(&info);
-
         log_dbg("Getting boot information from %s.", dst_name);
 
         clock_gettime(CLOCK_REALTIME, &t0);
diff --git a/src/ipcpd/normal/fmgr.c b/src/ipcpd/normal/fmgr.c
index 071a895f..0c927fc7 100644
--- a/src/ipcpd/normal/fmgr.c
+++ b/src/ipcpd/normal/fmgr.c
@@ -249,7 +249,6 @@ static void fmgr_destroy_flows(void)
 
 int fmgr_init(void)
 {
-        enum pol_cacep     pc;
         enum pol_gam       pg;
 
         int i;
@@ -292,15 +291,6 @@ int fmgr_init(void)
                 return -1;
         }
 
-        if (rib_read(BOOT_PATH "/dt/gam/cacep", &pc, sizeof(pc))
-            != sizeof(pc)) {
-                log_err("Failed to read CACEP policy for ribmgr gam.");
-                return -1;
-        }
-
-        /* FIXME: Implement cacep policies */
-        (void) pc;
-
         fmgr.gam = gam_create(pg);
         if (fmgr.gam == NULL) {
                 log_err("Failed to create graph adjacency manager.");
@@ -345,7 +335,6 @@ void fmgr_fini()
                 flow_dealloc(flow->fd);
                 ipcp_flow_get_qoscube(flow->fd, &cube);
                 flow_set_del(fmgr.nm1_set[cube], flow->fd);
-                free(flow->info->name);
                 free(flow->info);
                 free(flow);
         }
diff --git a/src/ipcpd/normal/gam.c b/src/ipcpd/normal/gam.c
index 2479fa62..bdfc8cb9 100644
--- a/src/ipcpd/normal/gam.c
+++ b/src/ipcpd/normal/gam.c
@@ -120,7 +120,6 @@ void gam_destroy(struct gam * instance)
         list_for_each_safe(p, n, &instance->gas) {
                 struct ga * e = list_entry(p, struct ga, next);
                 list_del(&e->next);
-                free(e->info->name);
                 free(e->info);
                 free(e);
         }
@@ -156,7 +155,7 @@ static int add_ga(struct gam *       instance,
         pthread_cond_signal(&instance->gas_cond);
         pthread_mutex_unlock(&instance->gas_lock);
 
-        log_info("Added flow to %s.", info->name);
+        log_info("Added flow.");
 
         return 0;
 }
@@ -166,7 +165,7 @@ int gam_flow_arr(struct gam * instance,
                  qosspec_t    qs)
 {
         struct conn_info * rcv_info;
-        struct conn_info   snd_info;
+        struct conn_info snd_info;
 
         if (flow_alloc_resp(fd, instance->ops->accept_new_flow(instance->ops_o))
             < 0) {
@@ -174,34 +173,29 @@ int gam_flow_arr(struct gam * instance,
                 return -1;
         }
 
-        conn_info_init(&snd_info);
-        snd_info.proto.protocol = strdup(CDAP_PROTO);
-        if (snd_info.proto.protocol == NULL) {
-                conn_info_fini(&snd_info);
+        rcv_info = malloc(sizeof(*rcv_info));
+        if (rcv_info == NULL)
                 return -ENOMEM;
-        }
 
-        snd_info.proto.pref_version = 1;
-        snd_info.proto.pref_syntax = PROTO_GPB;
-        snd_info.addr = ipcpi.address;
-        snd_info.name = strdup(ipcpi.name);
-        if (snd_info.name == NULL) {
-                conn_info_fini(&snd_info);
-                return -ENOMEM;
-        }
+        memset(&snd_info, 0, sizeof(snd_info));
+        memset(rcv_info, 0, sizeof(*rcv_info));
+
+        /* FIXME: send correct AE */
+        strcpy(snd_info.ae_name, "FIXME:CORRECT_AE");
+        strcpy(snd_info.protocol, CDAP_PROTO);
+        snd_info.pref_version = 1;
+        snd_info.pref_syntax = PROTO_GPB;
+        snd_info.ae.addr = ipcpi.address;
 
-        rcv_info = cacep_auth_wait(fd, SIMPLE_AUTH, &snd_info, NULL);
-        if (rcv_info == NULL) {
-                log_err("Other side failed to authenticate.");
-                conn_info_fini(&snd_info);
+        if (cacep_listen(fd, &snd_info, rcv_info)) {
+                log_err("Failed to create application connection.");
+                flow_dealloc(fd);
+                free(rcv_info);
                 return -1;
         }
 
-        conn_info_fini(&snd_info);
-
         if (instance->ops->accept_flow(instance->ops_o, qs, rcv_info)) {
                 flow_dealloc(fd);
-                conn_info_fini(rcv_info);
                 free(rcv_info);
                 return 0;
         }
@@ -209,7 +203,6 @@ int gam_flow_arr(struct gam * instance,
         if (add_ga(instance, fd, qs, rcv_info)) {
                 log_err("Failed to add ga to graph adjacency manager list.");
                 flow_dealloc(fd);
-                conn_info_fini(rcv_info);
                 free(rcv_info);
                 return -1;
         }
@@ -222,11 +215,15 @@ int gam_flow_alloc(struct gam * instance,
                    qosspec_t    qs)
 {
         struct conn_info * rcv_info;
-        struct conn_info   snd_info;
+        struct conn_info snd_info;
         int                 fd;
 
         log_dbg("Allocating flow to %s.", dst_name);
 
+        rcv_info = malloc(sizeof(*rcv_info));
+        if (rcv_info == NULL)
+                return -ENOMEM;
+
         fd = flow_alloc(dst_name, NULL);
         if (fd < 0) {
                 log_err("Failed to allocate flow to %s.", dst_name);
@@ -239,34 +236,25 @@ int gam_flow_alloc(struct gam * instance,
                 return -1;
         }
 
-        conn_info_init(&snd_info);
-        snd_info.proto.protocol = strdup(CDAP_PROTO);
-        if (snd_info.proto.protocol == NULL) {
-                conn_info_fini(&snd_info);
-                return -ENOMEM;
-        }
+        memset(&snd_info, 0, sizeof(snd_info));
+        memset(rcv_info, 0, sizeof(*rcv_info));
 
-        snd_info.proto.pref_version = 1;
-        snd_info.proto.pref_syntax = PROTO_GPB;
-        snd_info.addr = ipcpi.address;
-        snd_info.name = strdup(ipcpi.name);
-        if (snd_info.name == NULL) {
-                conn_info_fini(&snd_info);
-                return -ENOMEM;
-        }
+        /* FIXME: send correct AE */
+        strcpy(snd_info.ae_name, "FIXME:CORRECT_AE");
+        strcpy(snd_info.protocol, CDAP_PROTO);
+        snd_info.pref_version = 1;
+        snd_info.pref_syntax = PROTO_GPB;
+        snd_info.ae.addr = ipcpi.address;
 
-        rcv_info = cacep_auth(fd, SIMPLE_AUTH, &snd_info, NULL);
-        if (rcv_info == NULL) {
-                log_err("Other side failed to authenticate.");
-                conn_info_fini(&snd_info);
+        if (cacep_connect(fd, &snd_info, rcv_info)) {
+                log_err("Failed to create application connection.");
+                flow_dealloc(fd);
+                free(rcv_info);
                 return -1;
         }
 
-        conn_info_fini(&snd_info);
-
         if (instance->ops->accept_flow(instance->ops_o, qs, rcv_info)) {
                 flow_dealloc(fd);
-                conn_info_fini(rcv_info);
                 free(rcv_info);
                 return 0;
         }
@@ -274,7 +262,6 @@ int gam_flow_alloc(struct gam * instance,
         if (add_ga(instance, fd, qs, rcv_info)) {
                 log_err("Failed to add GA to graph adjacency manager list.");
                 flow_dealloc(fd);
-                conn_info_fini(rcv_info);
                 free(rcv_info);
                 return -1;
         }
@@ -282,10 +269,10 @@ int gam_flow_alloc(struct gam * instance,
         return 0;
 }
 
-int gam_flow_wait(struct gam *         instance,
-                  int *                fd,
+int gam_flow_wait(struct gam *        instance,
+                  int *               fd,
                   struct conn_info ** info,
-                  qosspec_t *          qs)
+                  qosspec_t *         qs)
 {
         struct ga * ga;
 
diff --git a/src/ipcpd/normal/main.c b/src/ipcpd/normal/main.c
index 939544c3..c75a74d6 100644
--- a/src/ipcpd/normal/main.c
+++ b/src/ipcpd/normal/main.c
@@ -336,11 +336,6 @@ int normal_rib_init(void)
 
 static int normal_ipcp_bootstrap(struct dif_config * conf)
 {
-        /* FIXME: get CACEP policies from conf */
-        enum pol_cacep pol = SIMPLE_AUTH;
-
-        (void) pol;
-
         assert(conf);
         assert(conf->type == THIS_TYPE);
 
@@ -388,12 +383,6 @@ static int normal_ipcp_bootstrap(struct dif_config * conf)
             rib_write(BOOT_PATH "/rm/gam/type",
                       &conf->rm_gam_type,
                       sizeof(conf->rm_gam_type)) ||
-            rib_write(BOOT_PATH "/rm/gam/cacep",
-                      &pol,
-                      sizeof(pol)) ||
-            rib_write(BOOT_PATH "/dt/gam/cacep",
-                      &pol,
-                      sizeof(pol)) ||
             rib_write(BOOT_PATH "/addr_auth/type",
                       &conf->addr_auth_type,
                       sizeof(conf->addr_auth_type))) {
diff --git a/src/ipcpd/normal/pol/complete.c b/src/ipcpd/normal/pol/complete.c
index 1d4811d2..68f43e81 100644
--- a/src/ipcpd/normal/pol/complete.c
+++ b/src/ipcpd/normal/pol/complete.c
@@ -167,7 +167,8 @@ int complete_accept_flow(void *                    o,
 
         list_for_each(pos, &complete->neighbors) {
                 struct neighbor * e = list_entry(pos, struct neighbor, next);
-                if (strcmp(e->neighbor, info->name) == 0) {
+                /* FIXME: figure out union type and check name or address */
+                if (strcmp(e->neighbor, info->ae.name) == 0) {
                         pthread_mutex_unlock(&complete->neighbors_lock);
                         return -1;
                 }
@@ -185,7 +186,8 @@ int complete_accept_flow(void *                    o,
 
         list_head_init(&n->next);
 
-        n->neighbor = strdup(info->name);
+        /* FIXME: figure out union type and check name or address */
+        n->neighbor = strdup(info->ae.name);
         if (n->neighbor == NULL) {
                 pthread_mutex_unlock(&complete->neighbors_lock);
                 free(n);
diff --git a/src/ipcpd/normal/ribmgr.c b/src/ipcpd/normal/ribmgr.c
index 1436a7d4..25f1687e 100644
--- a/src/ipcpd/normal/ribmgr.c
+++ b/src/ipcpd/normal/ribmgr.c
@@ -53,7 +53,6 @@ struct {
 
 int ribmgr_init(void)
 {
-        enum pol_cacep pc;
         enum pol_gam   pg;
 
         if (rib_read(BOOT_PATH "/rm/gam/type", &pg, sizeof(pg))
@@ -62,15 +61,6 @@ int ribmgr_init(void)
                 return -1;
         }
 
-        if (rib_read(BOOT_PATH "/rm/gam/cacep", &pc, sizeof(pc))
-            != sizeof(pc)) {
-                log_err("Failed to read CACEP policy for ribmgr gam.");
-                return -1;
-        }
-
-        /* FIXME: Implement cacep policies */
-        (void) pc;
-
         ribmgr.gam = gam_create(pg);
         if (ribmgr.gam == NULL) {
                 log_err("Failed to create gam.");