* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
- *
- * Copyright © 2006 Pierre Habouzit
+ */
+/*
+ * Copyright © 2007 Pierre Habouzit
*/
+#include <pthread.h>
#include <sys/epoll.h>
#include <sys/socket.h>
#ifndef EPOLLRDHUP
#endif
#include "evtloop.h"
#include "mutt.h"
+#include "mutt_ssl.li"
+
+DO_ARRAY_TYPE(job_t, job);
static int epollfd = -1;
+static job_array jobs;
+static pthread_mutex_t el_mx;
+static pthread_cond_t el_cond;
+static pthread_t el_thread;
static int el_job_setemode(job_t *w, el_mode emode)
{
}
}
+void job_wipe(job_t *w)
+{
+ if (w->xcred)
+ gnutls_certificate_free_credentials(w->xcred);
+ if (w->session)
+ gnutls_deinit(w->session);
+}
+
+static void job_arrau_dtor(job_t **j)
+{
+ if (*j)
+ IGNORE(el_job_release(*j, EL_KILLED));
+}
+
+DO_ARRAY_FUNCS(job_t, job, job_arrau_dtor);
+
+static void job_array_remove(job_array *arr, job_t *j)
+{
+ for (int i = 0; i < arr->len; i++) {
+ if (arr->arr[i] == j) {
+ job_array_take(arr, i);
+ break;
+ }
+ }
+}
+
+job_t *el_job_start(const machine_t *m, void *cfg)
+{
+ job_t *w = job_new();
+ w->m = m;
+ job_array_append(&jobs, w);
+ return m->setup(w, cfg) < 0 ? NULL : w;
+}
+
int el_job_release(job_t *w, el_status reason)
{
+ if (w->cond) {
+ pthread_cond_signal(&el_cond);
+ w->cond = false;
+ }
w->state = EL_LLP_FINI;
if (w->m && w->m->finalize) {
w->m->finalize(w, reason);
}
if (w->fd >= 0) {
+ if (w->session)
+ gnutls_bye(w->session, GNUTLS_SHUT_RDWR);
close(w->fd);
}
+ job_array_remove(&jobs, w);
job_delete(&w);
return -1;
}
+static int el_job_tlsing(job_t *w, int starttls)
+{
+ int err = gnutls_handshake(w->session);
+ if (err < 0 && !gnutls_error_is_fatal(err)) {
+ int wr = gnutls_record_get_direction(w->session);
+ return el_job_setemode(w, wr ? EL_WRITING : EL_READING);
+ }
+ if (err < 0)
+ return el_job_release(w, EL_RDHUP);
+
+#if 0
+ if (!tls_check_certificate (conn))
+ return -1;
+#endif
+
+ /* set Security Strength Factor (SSF) for SASL */
+ /* NB: gnutls_cipher_get_key_size() returns key length in bytes */
+ w->ssf = gnutls_cipher_get_key_size(gnutls_cipher_get(w->session)) * 8;
+ w->state = EL_LLP_READY;
+ if (starttls)
+ return el_job_setemode(w, w->mode);
+ return w->m->on_event(w, EL_EVT_RUNNING);
+}
+
+static int el_job_starttlsing(job_t *w)
+{
+ return el_job_tlsing(w, true);
+}
+
+static int el_job_connecting_ssl(job_t *w)
+{
+ return el_job_tlsing(w, false);
+}
+
static int el_job_connecting(job_t *w)
{
int err = 0;
if (getsockopt(w->fd, SOL_SOCKET, SO_ERROR, (void *)&err, &len) || err)
return el_job_release(w, EL_ERROR);
+ if (w->session) {
+ w->llp = &el_job_connecting_ssl;
+ return w->llp(w);
+ }
w->state = EL_LLP_READY;
return w->m->on_event(w, EL_EVT_RUNNING);
}
+static int tls_negotiate(job_t *w)
+{
+ static int protocol_priority[] = { GNUTLS_TLS1, GNUTLS_SSL3, 0 };
+
+ if (gnutls_certificate_allocate_credentials(&w->xcred) < 0)
+ return -1;
+
+ /* ignore errors, maybe file doesn't exist yet */
+ gnutls_certificate_set_x509_trust_file(w->xcred, mod_ssl.cert_file,
+ GNUTLS_X509_FMT_PEM);
+
+ if (mod_ssl.ca_certificates_file) {
+ gnutls_certificate_set_x509_trust_file(w->xcred,
+ mod_ssl.ca_certificates_file, GNUTLS_X509_FMT_PEM);
+ }
+ gnutls_init(&w->session, GNUTLS_CLIENT);
+
+ /* set socket */
+ gnutls_transport_set_ptr(w->session, (gnutls_transport_ptr)(intptr_t)w->fd);
+
+ /* disable TLS/SSL protocols as needed */
+ if (!mod_ssl.use_sslv3) {
+ protocol_priority[1] = 0;
+ }
+
+ /* We use default priorities (see gnutls documentation),
+ except for protocol version */
+ gnutls_set_default_priority(w->session);
+ gnutls_protocol_set_priority(w->session, protocol_priority);
+ gnutls_credentials_set(w->session, GNUTLS_CRD_CERTIFICATE, w->xcred);
+ return 0;
+}
+
int el_job_connect(job_t *w, struct sockaddr *addr, socklen_t len,
- int type, int proto)
+ int type, int proto, int ssl)
{
int res, sock = socket(addr->sa_family, type, proto);
goto error;
w->fd = sock;
+ if (ssl && tls_negotiate(w) < 0)
+ goto error;
+
w->llp = &el_job_connecting;
return el_job_setmode(w, EL_WRITING);
return el_job_release(w, EL_ERROR);
}
+int el_job_starttls(job_t *w)
+{
+ if (tls_negotiate(w) < 0)
+ return el_job_release(w, EL_RDHUP);
+ w->state = EL_LLP_INIT;
+ w->llp = &el_job_starttlsing;
+ return w->llp(w);
+}
+
ssize_t el_job_read(job_t *w, buffer_t *buf)
{
ssize_t nr;
if (w->session) {
nr = gnutls_record_recv(w->session, buf->data + buf->len, BUFSIZ);
- if (nr < 0 && gnutls_error_is_fatal(nr))
- return el_job_release(w, EL_RDHUP);
- if (nr <= 0) {
+ if (nr < 0 && !gnutls_error_is_fatal(nr)) {
int wr = gnutls_record_get_direction(w->session);
return el_job_setemode(w, wr ? EL_WRITING : EL_READING);
}
EL_JOB_CHECK(el_job_setemode(w, w->mode));
} else {
nr = read(w->fd, buf->data + buf->len, BUFSIZ);
- if (nr < 0) {
- if (errno == EINTR || errno == EAGAIN)
- return 0;
- }
- if (nr <= 0)
- return el_job_release(w, EL_RDHUP);
+ if (nr < 0 && (errno == EINTR || errno == EAGAIN))
+ return 0;
}
+ if (nr <= 0)
+ return el_job_release(w, EL_RDHUP);
buffer_extend(buf, nr);
return nr;
}
+ssize_t el_job_write(job_t *w, buffer_t *buf)
+{
+ ssize_t nr;
+
+ if (buf->len == 0)
+ return 0;
+
+ if (w->session) {
+ nr = gnutls_record_send(w->session, buf->data, buf->len);
+ if (nr < 0 && !gnutls_error_is_fatal(nr)) {
+ int wr = gnutls_record_get_direction(w->session);
+ return el_job_setemode(w, wr ? EL_WRITING : EL_READING);
+ }
+ EL_JOB_CHECK(el_job_setemode(w, w->mode));
+ } else {
+ nr = write(w->fd, buf->data, buf->len);
+ if (nr < 0 && (errno == EINTR || errno == EAGAIN))
+ return 0;
+ }
+ if (nr <= 0)
+ return el_job_release(w, EL_RDHUP);
+ buffer_splice(buf, 0, nr, NULL, 0);
+ return nr;
+}
+
+void el_lock(void)
+{
+ pthread_mutex_lock(&el_mx);
+}
+
+void el_unlock(void)
+{
+ pthread_mutex_unlock(&el_mx);
+}
+
int el_dispatch(int timeout)
{
struct epoll_event events[FD_SETSIZE];
mutt_exit(EXIT_FAILURE);
}
+ el_lock();
while (--count >= 0) {
job_t *w = events[count].data.ptr;
int event = events[count].events;
int evt = 0;
+ if (w->cond) {
+ pthread_cond_signal(&el_cond);
+ w->cond = false;
+ }
+ gettimeofday(&w->mru, NULL);
switch (w->state) {
case EL_LLP_INIT:
w->llp(w);
if (event & EPOLLRDHUP) {
IGNORE(el_job_release(w, EL_RDHUP));
} else if (w->mode != w->emode) {
- w->m->on_event(w, EL_EVT_INOUT ^ w->emode);
+ IGNORE(w->m->on_event(w, EL_EVT_INOUT ^ w->emode));
} else {
if (event & EPOLLIN)
evt |= EL_EVT_IN;
if (event & EPOLLOUT)
evt |= EL_EVT_OUT;
- w->m->on_event(w, evt);
+ IGNORE(w->m->on_event(w, evt));
}
break;
break;
}
}
+ el_unlock();
return 0;
}
+
+void el_wait(job_t *w)
+{
+ w->cond = true;
+ pthread_cond_wait(&el_cond, &el_mx);
+}
+
+static void *el_loop(void *data)
+{
+ time_t sec = time(NULL);
+
+ for (;;) {
+ struct timeval now;
+
+ el_dispatch(100);
+ pthread_testcancel();
+
+ gettimeofday(&now, NULL);
+ if (sec >= now.tv_sec)
+ continue;
+ sec = now.tv_sec;
+ now.tv_sec -= 10;
+
+ el_lock();
+ for (int i = jobs.len - 1; i >= 0; --i) {
+ job_t *w = jobs.arr[i];
+ if (timercmp(&now, &w->mru, >)) {
+ if (w->cond) {
+ pthread_cond_signal(&el_cond);
+ w->cond = false;
+ }
+ IGNORE(w->m->on_event(w, EL_EVT_WAKEUP));
+ }
+ }
+ el_unlock();
+ }
+}
+
+void el_initialize(void)
+{
+ pthread_mutexattr_t attr;
+
+ pthread_mutexattr_init(&attr);
+ pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
+ pthread_mutex_init(&el_mx, &attr);
+ pthread_mutexattr_destroy(&attr);
+
+ gnutls_global_init();
+ epollfd = epoll_create(1024);
+ if (epollfd < 0) {
+ mutt_error("epoll_create");
+ mutt_exit(EXIT_FAILURE);
+ }
+ job_array_init(&jobs);
+ pthread_create(&el_thread, NULL, &el_loop, NULL);
+}
+
+void el_shutdown(void)
+{
+ pthread_cancel(el_thread);
+ pthread_join(el_thread, NULL);
+ job_array_wipe(&jobs);
+ close(epollfd);
+ gnutls_global_deinit();
+ pthread_mutex_destroy(&el_mx);
+}
projects / apps / madmutt.git / blobdiff