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Diffstat (limited to 'src/lib/dev.c')
-rw-r--r--src/lib/dev.c121
1 files changed, 106 insertions, 15 deletions
diff --git a/src/lib/dev.c b/src/lib/dev.c
index 229a1470..1e0a177d 100644
--- a/src/lib/dev.c
+++ b/src/lib/dev.c
@@ -29,6 +29,7 @@
#include "config.h"
#include <ouroboros/hash.h>
+#include <ouroboros/cacep.h>
#include <ouroboros/errno.h>
#include <ouroboros/dev.h>
#include <ouroboros/ipcp-dev.h>
@@ -59,6 +60,8 @@
#define DONE_PART -2
#define CRCLEN (sizeof(uint32_t))
+#define SECMEMSZ 16384
+#define SYMMKEYSZ 32
struct flow_set {
size_t idx;
@@ -98,6 +101,9 @@ struct flow {
qosspec_t spec;
ssize_t part_idx;
+ void * ctx;
+ uint8_t key[SYMMKEYSZ];
+
pid_t pid;
bool snd_timesout;
@@ -237,6 +243,8 @@ static void flow_clear(int fd)
ai.flows[fd].pid = -1;
}
+#include "crypt.c"
+
static void flow_fini(int fd)
{
assert(fd >= 0 && fd < SYS_MAX_FLOWS);
@@ -266,6 +274,9 @@ static void flow_fini(int fd)
if (ai.flows[fd].frcti != NULL)
frcti_destroy(ai.flows[fd].frcti);
+ if (ai.flows[fd].spec.cypher_s > 0)
+ crypt_fini(&ai.flows[fd]);
+
flow_clear(fd);
}
@@ -286,15 +297,15 @@ static int flow_init(int flow_id,
ai.flows[fd].rx_rb = shm_rbuff_open(ai.pid, flow_id);
if (ai.flows[fd].rx_rb == NULL)
- goto fail;
+ goto fail_rx_rb;
ai.flows[fd].tx_rb = shm_rbuff_open(pid, flow_id);
if (ai.flows[fd].tx_rb == NULL)
- goto fail;
+ goto fail_tx_rb;
ai.flows[fd].set = shm_flow_set_open(pid);
if (ai.flows[fd].set == NULL)
- goto fail;
+ goto fail_set;
ai.flows[fd].flow_id = flow_id;
ai.flows[fd].oflags = FLOWFDEFAULT;
@@ -302,6 +313,9 @@ static int flow_init(int flow_id,
ai.flows[fd].part_idx = NO_PART;
ai.flows[fd].spec = qs;
+ if (qs.cypher_s > 0 && crypt_init(&ai.flows[fd]) < 0)
+ goto fail_crypt;
+
ai.ports[flow_id].fd = fd;
port_set_state(&ai.ports[flow_id], PORT_ID_ASSIGNED);
@@ -310,8 +324,14 @@ static int flow_init(int flow_id,
return fd;
- fail:
- flow_fini(fd);
+ fail_crypt:
+ shm_flow_set_close(ai.flows[fd].set);
+ fail_set:
+ shm_rbuff_close(ai.flows[fd].tx_rb);
+ fail_tx_rb:
+ shm_rbuff_close(ai.flows[fd].rx_rb);
+ fail_rx_rb:
+ bmp_release(ai.fds, fd);
fail_fds:
pthread_rwlock_unlock(&ai.lock);
return err;
@@ -344,12 +364,11 @@ static void init(int argc,
ai.pid = getpid();
#ifdef HAVE_LIBGCRYPT
- if (!gcry_control (GCRYCTL_INITIALIZATION_FINISHED_P)) {
+ if (!gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P)) {
if (!gcry_check_version(GCRYPT_VERSION))
goto fail_fds;
- /* Needs to be enabled when we add encryption. */
- gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
- gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
+ gcry_control(GCRYCTL_DISABLE_SECMEM, 0);
+ gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
}
#endif
ai.fds = bmp_create(PROG_MAX_FLOWS - PROG_RES_FDS, PROG_RES_FDS);
@@ -550,8 +569,8 @@ int flow_accept(qosspec_t * qs,
if (ai.flows[fd].spec.in_order != 0) {
ai.flows[fd].frcti = frcti_create(fd);
if (ai.flows[fd].frcti == NULL) {
- flow_fini(fd);
pthread_rwlock_unlock(&ai.lock);
+ flow_dealloc(fd);
return -ENOMEM;
}
}
@@ -561,6 +580,31 @@ int flow_accept(qosspec_t * qs,
pthread_rwlock_unlock(&ai.lock);
+ /* TODO: piggyback public keys at flow allocation. */
+ if (ai.flows[fd].spec.cypher_s > 0) {
+ uint8_t key[SYMMKEYSZ];
+ uint16_t tmp;
+
+ pthread_rwlock_wrlock(&ai.lock);
+
+ tmp = ai.flows[fd].spec.cypher_s;
+ ai.flows[fd].spec.cypher_s = 0;
+
+ pthread_rwlock_unlock(&ai.lock);
+
+ if (crypt_dh_srv(fd, key) < 0) {
+ flow_dealloc(fd);
+ return -ECRYPT;
+ }
+
+ pthread_rwlock_wrlock(&ai.lock);
+
+ ai.flows[fd].spec.cypher_s = tmp;
+ memcpy(ai.flows[fd].key, key, SYMMKEYSZ);
+
+ pthread_rwlock_unlock(&ai.lock);
+ }
+
return fd;
}
@@ -579,9 +623,9 @@ static int __flow_alloc(const char * dst,
qs->ber = 1;
#endif
if (join)
- msg.code = IRM_MSG_CODE__IRM_FLOW_JOIN;
+ msg.code = IRM_MSG_CODE__IRM_FLOW_JOIN;
else
- msg.code = IRM_MSG_CODE__IRM_FLOW_ALLOC;
+ msg.code = IRM_MSG_CODE__IRM_FLOW_ALLOC;
msg.dst = (char *) dst;
msg.has_pid = true;
msg.pid = ai.pid;
@@ -605,7 +649,7 @@ static int __flow_alloc(const char * dst,
}
if (recv_msg->result != 0) {
- int res = recv_msg->result;
+ int res = recv_msg->result;
irm_msg__free_unpacked(recv_msg, NULL);
return res;
}
@@ -630,14 +674,39 @@ static int __flow_alloc(const char * dst,
if (ai.flows[fd].spec.in_order != 0) {
ai.flows[fd].frcti = frcti_create(fd);
if (ai.flows[fd].frcti == NULL) {
- flow_fini(fd);
pthread_rwlock_unlock(&ai.lock);
+ flow_dealloc(fd);
return -ENOMEM;
}
}
pthread_rwlock_unlock(&ai.lock);
+ /* TODO: piggyback public keys at flow allocation. */
+ if (!join && ai.flows[fd].spec.cypher_s > 0) {
+ uint8_t key[SYMMKEYSZ];
+ uint16_t tmp;
+
+ pthread_rwlock_wrlock(&ai.lock);
+
+ tmp = ai.flows[fd].spec.cypher_s;
+ ai.flows[fd].spec.cypher_s = 0;
+
+ pthread_rwlock_unlock(&ai.lock);
+
+ if (crypt_dh_clt(fd, key) < 0) {
+ flow_dealloc(fd);
+ return -ECRYPT;
+ }
+
+ pthread_rwlock_wrlock(&ai.lock);
+
+ ai.flows[fd].spec.cypher_s = tmp;
+ memcpy(ai.flows[fd].key, key, SYMMKEYSZ);
+
+ pthread_rwlock_unlock(&ai.lock);
+ }
+
return fd;
}
@@ -931,6 +1000,15 @@ ssize_t flow_write(int fd,
return -ENOMEM;
}
+ pthread_rwlock_wrlock(&ai.lock);
+ if (flow->spec.cypher_s > 0)
+ if (crypt_encrypt(flow, sdb) < 0) {
+ pthread_rwlock_unlock(&ai.lock);
+ shm_rdrbuff_remove(ai.rdrb, idx);
+ return -ENOMEM;
+ }
+ pthread_rwlock_unlock(&ai.lock);
+
if (flow->spec.ber == 0 && add_crc(sdb) != 0) {
shm_rdrbuff_remove(ai.rdrb, idx);
return -ENOMEM;
@@ -1009,9 +1087,22 @@ ssize_t flow_read(int fd,
shm_rbuff_read_b(rb, abstime);
if (idx < 0)
return idx;
+
sdb = shm_rdrbuff_get(ai.rdrb, idx);
- if (flow->spec.ber == 0 && chk_crc(sdb) != 0)
+ if (flow->spec.ber == 0 && chk_crc(sdb) != 0) {
+ shm_rdrbuff_remove(ai.rdrb, idx);
continue;
+ }
+
+ pthread_rwlock_wrlock(&ai.lock);
+ if (flow->spec.cypher_s > 0)
+ if (crypt_decrypt(flow, sdb) < 0) {
+ pthread_rwlock_unlock(&ai.lock);
+ shm_rdrbuff_remove(ai.rdrb,
+ idx);
+ return -ENOMEM;
+ }
+ pthread_rwlock_unlock(&ai.lock);
} while (frcti_rcv(flow->frcti, sdb) != 0);
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 21:23:12 +0000