diff options
Diffstat (limited to 'thirdparty/libwebsockets/plat/lws-plat-unix.c')
| -rw-r--r-- | thirdparty/libwebsockets/plat/lws-plat-unix.c | 982 |
1 files changed, 982 insertions, 0 deletions
diff --git a/thirdparty/libwebsockets/plat/lws-plat-unix.c b/thirdparty/libwebsockets/plat/lws-plat-unix.c new file mode 100644 index 0000000000..d1bca8b5df --- /dev/null +++ b/thirdparty/libwebsockets/plat/lws-plat-unix.c @@ -0,0 +1,982 @@ +/* + * libwebsockets - small server side websockets and web server implementation + * + * Copyright (C) 2010-2017 Andy Green <andy@warmcat.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation: + * version 2.1 of the License. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#define _GNU_SOURCE +#include "core/private.h" + +#include <pwd.h> +#include <grp.h> + +#ifdef LWS_WITH_PLUGINS +#include <dlfcn.h> +#endif +#include <dirent.h> + +void lws_plat_apply_FD_CLOEXEC(int n) +{ + if (n != -1) + fcntl(n, F_SETFD, FD_CLOEXEC ); +} + +int +lws_plat_socket_offset(void) +{ + return 0; +} + +int +lws_plat_pipe_create(struct lws *wsi) +{ + struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi]; + +#if defined(LWS_HAVE_PIPE2) + return pipe2(pt->dummy_pipe_fds, O_NONBLOCK); +#else + return pipe(pt->dummy_pipe_fds); +#endif +} + +int +lws_plat_pipe_signal(struct lws *wsi) +{ + struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi]; + char buf = 0; + int n; + + n = write(pt->dummy_pipe_fds[1], &buf, 1); + + return n != 1; +} + +void +lws_plat_pipe_close(struct lws *wsi) +{ + struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi]; + + if (pt->dummy_pipe_fds[0] && pt->dummy_pipe_fds[0] != -1) + close(pt->dummy_pipe_fds[0]); + if (pt->dummy_pipe_fds[1] && pt->dummy_pipe_fds[1] != -1) + close(pt->dummy_pipe_fds[1]); + + pt->dummy_pipe_fds[0] = pt->dummy_pipe_fds[1] = -1; +} + +#ifdef __QNX__ +# include "netinet/tcp_var.h" +# define TCP_KEEPINTVL TCPCTL_KEEPINTVL +# define TCP_KEEPIDLE TCPCTL_KEEPIDLE +# define TCP_KEEPCNT TCPCTL_KEEPCNT +#endif + +unsigned long long time_in_microseconds(void) +{ + struct timeval tv; + + gettimeofday(&tv, NULL); + return ((unsigned long long)tv.tv_sec * 1000000LL) + tv.tv_usec; +} + +LWS_VISIBLE int +lws_get_random(struct lws_context *context, void *buf, int len) +{ + return read(context->fd_random, (char *)buf, len); +} + +LWS_VISIBLE int +lws_send_pipe_choked(struct lws *wsi) +{ + struct lws_pollfd fds; + struct lws *wsi_eff = wsi; + +#if defined(LWS_WITH_HTTP2) + wsi_eff = lws_get_network_wsi(wsi); +#endif + + /* the fact we checked implies we avoided back-to-back writes */ + wsi_eff->could_have_pending = 0; + + /* treat the fact we got a truncated send pending as if we're choked */ + if (wsi_eff->trunc_len) + return 1; + + fds.fd = wsi_eff->desc.sockfd; + fds.events = POLLOUT; + fds.revents = 0; + + if (poll(&fds, 1, 0) != 1) + return 1; + + if ((fds.revents & POLLOUT) == 0) + return 1; + + /* okay to send another packet without blocking */ + + return 0; +} + +LWS_VISIBLE int +lws_poll_listen_fd(struct lws_pollfd *fd) +{ + return poll(fd, 1, 0); +} + +LWS_VISIBLE void lwsl_emit_syslog(int level, const char *line) +{ + int syslog_level = LOG_DEBUG; + + switch (level) { + case LLL_ERR: + syslog_level = LOG_ERR; + break; + case LLL_WARN: + syslog_level = LOG_WARNING; + break; + case LLL_NOTICE: + syslog_level = LOG_NOTICE; + break; + case LLL_INFO: + syslog_level = LOG_INFO; + break; + } + syslog(syslog_level, "%s", line); +} + +LWS_VISIBLE LWS_EXTERN int +_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi) +{ + volatile struct lws_foreign_thread_pollfd *ftp, *next; + volatile struct lws_context_per_thread *vpt; + struct lws_context_per_thread *pt; + int n = -1, m, c; + + /* stay dead once we are dead */ + + if (!context || !context->vhost_list) + return 1; + + pt = &context->pt[tsi]; + vpt = (volatile struct lws_context_per_thread *)pt; + + lws_stats_atomic_bump(context, pt, LWSSTATS_C_SERVICE_ENTRY, 1); + + if (timeout_ms < 0) + goto faked_service; + + if (context->event_loop_ops->run_pt) + context->event_loop_ops->run_pt(context, tsi); + + if (!context->service_tid_detected) { + struct lws _lws; + + memset(&_lws, 0, sizeof(_lws)); + _lws.context = context; + + context->service_tid_detected = + context->vhost_list->protocols[0].callback( + &_lws, LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0); + context->service_tid = context->service_tid_detected; + context->service_tid_detected = 1; + } + + /* + * is there anybody with pending stuff that needs service forcing? + */ + if (!lws_service_adjust_timeout(context, 1, tsi)) { + /* -1 timeout means just do forced service */ + _lws_plat_service_tsi(context, -1, pt->tid); + /* still somebody left who wants forced service? */ + if (!lws_service_adjust_timeout(context, 1, pt->tid)) + /* yes... come back again quickly */ + timeout_ms = 0; + } + + if (timeout_ms) { + lws_pt_lock(pt, __func__); + /* don't stay in poll wait longer than next hr timeout */ + lws_usec_t t = __lws_hrtimer_service(pt); + if ((lws_usec_t)timeout_ms * 1000 > t) + timeout_ms = t / 1000; + lws_pt_unlock(pt); + } + + vpt->inside_poll = 1; + lws_memory_barrier(); + n = poll(pt->fds, pt->fds_count, timeout_ms); + vpt->inside_poll = 0; + lws_memory_barrier(); + + /* Collision will be rare and brief. Just spin until it completes */ + while (vpt->foreign_spinlock) + ; + + /* + * At this point we are not inside a foreign thread pollfd change, + * and we have marked ourselves as outside the poll() wait. So we + * are the only guys that can modify the lws_foreign_thread_pollfd + * list on the pt. Drain the list and apply the changes to the + * affected pollfds in the correct order. + */ + + lws_pt_lock(pt, __func__); + + ftp = vpt->foreign_pfd_list; + //lwsl_notice("cleared list %p\n", ftp); + while (ftp) { + struct lws *wsi; + struct lws_pollfd *pfd; + + next = ftp->next; + pfd = &vpt->fds[ftp->fd_index]; + if (lws_socket_is_valid(pfd->fd)) { + wsi = wsi_from_fd(context, pfd->fd); + if (wsi) + __lws_change_pollfd(wsi, ftp->_and, ftp->_or); + } + lws_free((void *)ftp); + ftp = next; + } + vpt->foreign_pfd_list = NULL; + lws_memory_barrier(); + + /* we have come out of a poll wait... check the hrtimer list */ + + __lws_hrtimer_service(pt); + + lws_pt_unlock(pt); + + m = 0; +#if defined(LWS_ROLE_WS) && !defined(LWS_WITHOUT_EXTENSIONS) + m |= !!pt->ws.rx_draining_ext_list; +#endif + + if (pt->context->tls_ops && + pt->context->tls_ops->fake_POLLIN_for_buffered) + m |= pt->context->tls_ops->fake_POLLIN_for_buffered(pt); + + if (!m && !n) { /* nothing to do */ + lws_service_fd_tsi(context, NULL, tsi); + lws_service_do_ripe_rxflow(pt); + + return 0; + } + +faked_service: + m = lws_service_flag_pending(context, tsi); + if (m) + c = -1; /* unknown limit */ + else + if (n < 0) { + if (LWS_ERRNO != LWS_EINTR) + return -1; + return 0; + } else + c = n; + + /* any socket with events to service? */ + for (n = 0; n < (int)pt->fds_count && c; n++) { + if (!pt->fds[n].revents) + continue; + + c--; + + m = lws_service_fd_tsi(context, &pt->fds[n], tsi); + if (m < 0) + return -1; + /* if something closed, retry this slot */ + if (m) + n--; + } + + lws_service_do_ripe_rxflow(pt); + + return 0; +} + +LWS_VISIBLE int +lws_plat_check_connection_error(struct lws *wsi) +{ + return 0; +} + +LWS_VISIBLE int +lws_plat_service(struct lws_context *context, int timeout_ms) +{ + return _lws_plat_service_tsi(context, timeout_ms, 0); +} + +LWS_VISIBLE int +lws_plat_set_socket_options(struct lws_vhost *vhost, int fd) +{ + int optval = 1; + socklen_t optlen = sizeof(optval); + +#ifdef LWS_WITH_IPV6 + optval = 0; + setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (const void*)&optval, optlen); +#endif + +#if defined(__APPLE__) || \ + defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \ + defined(__NetBSD__) || \ + defined(__OpenBSD__) || \ + defined(__HAIKU__) + struct protoent *tcp_proto; +#endif + + fcntl(fd, F_SETFD, FD_CLOEXEC); + + if (vhost->ka_time) { + /* enable keepalive on this socket */ + optval = 1; + if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, + (const void *)&optval, optlen) < 0) + return 1; + +#if defined(__APPLE__) || \ + defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \ + defined(__NetBSD__) || \ + defined(__CYGWIN__) || defined(__OpenBSD__) || defined (__sun) || \ + defined(__HAIKU__) + + /* + * didn't find a way to set these per-socket, need to + * tune kernel systemwide values + */ +#else + /* set the keepalive conditions we want on it too */ + +#if defined(LWS_HAVE_TCP_USER_TIMEOUT) + optval = 1000 * (vhost->ka_time + + (vhost->ka_interval * vhost->ka_probes)); + if (setsockopt(fd, IPPROTO_TCP, TCP_USER_TIMEOUT, + (const void *)&optval, optlen) < 0) + return 1; +#endif + optval = vhost->ka_time; + if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, + (const void *)&optval, optlen) < 0) + return 1; + + optval = vhost->ka_interval; + if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL, + (const void *)&optval, optlen) < 0) + return 1; + + optval = vhost->ka_probes; + if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT, + (const void *)&optval, optlen) < 0) + return 1; +#endif + } + +#if defined(SO_BINDTODEVICE) + if (vhost->bind_iface && vhost->iface) { + lwsl_info("binding listen skt to %s using SO_BINDTODEVICE\n", vhost->iface); + if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, vhost->iface, + strlen(vhost->iface)) < 0) { + lwsl_warn("Failed to bind to device %s\n", vhost->iface); + return 1; + } + } +#endif + + /* Disable Nagle */ + optval = 1; +#if defined (__sun) || defined(__QNX__) + if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0) + return 1; +#elif !defined(__APPLE__) && \ + !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && \ + !defined(__NetBSD__) && \ + !defined(__OpenBSD__) && \ + !defined(__HAIKU__) + if (setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0) + return 1; +#else + tcp_proto = getprotobyname("TCP"); + if (setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, &optval, optlen) < 0) + return 1; +#endif + + /* We are nonblocking... */ + if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) + return 1; + + return 0; +} + +#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP) +static void +_lws_plat_apply_caps(int mode, const cap_value_t *cv, int count) +{ + cap_t caps; + + if (!count) + return; + + caps = cap_get_proc(); + + cap_set_flag(caps, mode, count, cv, CAP_SET); + cap_set_proc(caps); + prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0); + cap_free(caps); +} +#endif + +LWS_VISIBLE void +lws_plat_drop_app_privileges(const struct lws_context_creation_info *info) +{ +#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP) + int n; +#endif + + if (info->gid && info->gid != -1) + if (setgid(info->gid)) + lwsl_warn("setgid: %s\n", strerror(LWS_ERRNO)); + + if (info->uid && info->uid != -1) { + struct passwd *p = getpwuid(info->uid); + + if (p) { + +#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP) + _lws_plat_apply_caps(CAP_PERMITTED, info->caps, info->count_caps); +#endif + + initgroups(p->pw_name, info->gid); + if (setuid(info->uid)) + lwsl_warn("setuid: %s\n", strerror(LWS_ERRNO)); + else + lwsl_notice("Set privs to user '%s'\n", p->pw_name); + +#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP) + _lws_plat_apply_caps(CAP_EFFECTIVE, info->caps, info->count_caps); + + if (info->count_caps) + for (n = 0; n < info->count_caps; n++) + lwsl_notice(" RETAINING CAPABILITY %d\n", (int)info->caps[n]); +#endif + + } else + lwsl_warn("getpwuid: unable to find uid %d", info->uid); + } +} + +#ifdef LWS_WITH_PLUGINS + +#if defined(LWS_WITH_LIBUV) && UV_VERSION_MAJOR > 0 + +/* libuv.c implements these in a cross-platform way */ + +#else + +static int filter(const struct dirent *ent) +{ + if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..")) + return 0; + + return 1; +} + +LWS_VISIBLE int +lws_plat_plugins_init(struct lws_context * context, const char * const *d) +{ + struct lws_plugin_capability lcaps; + struct lws_plugin *plugin; + lws_plugin_init_func initfunc; + struct dirent **namelist; + int n, i, m, ret = 0; + char path[256]; + void *l; + + lwsl_notice(" Plugins:\n"); + + while (d && *d) { + n = scandir(*d, &namelist, filter, alphasort); + if (n < 0) { + lwsl_err("Scandir on %s failed\n", *d); + return 1; + } + + for (i = 0; i < n; i++) { + if (strlen(namelist[i]->d_name) < 7) + goto inval; + + lwsl_notice(" %s\n", namelist[i]->d_name); + + lws_snprintf(path, sizeof(path) - 1, "%s/%s", *d, + namelist[i]->d_name); + l = dlopen(path, RTLD_NOW); + if (!l) { + lwsl_err("Error loading DSO: %s\n", dlerror()); + while (i++ < n) + free(namelist[i]); + goto bail; + } + /* we could open it, can we get his init function? */ + m = lws_snprintf(path, sizeof(path) - 1, "init_%s", + namelist[i]->d_name + 3 /* snip lib... */); + path[m - 3] = '\0'; /* snip the .so */ + initfunc = dlsym(l, path); + if (!initfunc) { + lwsl_err("Failed to get init on %s: %s", + namelist[i]->d_name, dlerror()); + dlclose(l); + } + lcaps.api_magic = LWS_PLUGIN_API_MAGIC; + m = initfunc(context, &lcaps); + if (m) { + lwsl_err("Initializing %s failed %d\n", + namelist[i]->d_name, m); + dlclose(l); + goto skip; + } + + plugin = lws_malloc(sizeof(*plugin), "plugin"); + if (!plugin) { + lwsl_err("OOM\n"); + goto bail; + } + plugin->list = context->plugin_list; + context->plugin_list = plugin; + lws_strncpy(plugin->name, namelist[i]->d_name, + sizeof(plugin->name)); + plugin->l = l; + plugin->caps = lcaps; + context->plugin_protocol_count += lcaps.count_protocols; + context->plugin_extension_count += lcaps.count_extensions; + + free(namelist[i]); + continue; + + skip: + dlclose(l); + inval: + free(namelist[i]); + } + free(namelist); + d++; + } + +bail: + free(namelist); + + return ret; +} + +LWS_VISIBLE int +lws_plat_plugins_destroy(struct lws_context * context) +{ + struct lws_plugin *plugin = context->plugin_list, *p; + lws_plugin_destroy_func func; + char path[256]; + int m; + + if (!plugin) + return 0; + + lwsl_notice("%s\n", __func__); + + while (plugin) { + p = plugin; + m = lws_snprintf(path, sizeof(path) - 1, "destroy_%s", plugin->name + 3); + path[m - 3] = '\0'; + func = dlsym(plugin->l, path); + if (!func) { + lwsl_err("Failed to get destroy on %s: %s", + plugin->name, dlerror()); + goto next; + } + m = func(context); + if (m) + lwsl_err("Initializing %s failed %d\n", + plugin->name, m); +next: + dlclose(p->l); + plugin = p->list; + p->list = NULL; + free(p); + } + + context->plugin_list = NULL; + + return 0; +} + +#endif +#endif + + +#if 0 +static void +sigabrt_handler(int x) +{ + printf("%s\n", __func__); +} +#endif + +LWS_VISIBLE int +lws_plat_context_early_init(void) +{ +#if !defined(LWS_AVOID_SIGPIPE_IGN) + signal(SIGPIPE, SIG_IGN); +#endif + + return 0; +} + +LWS_VISIBLE void +lws_plat_context_early_destroy(struct lws_context *context) +{ +} + +LWS_VISIBLE void +lws_plat_context_late_destroy(struct lws_context *context) +{ +#ifdef LWS_WITH_PLUGINS + if (context->plugin_list) + lws_plat_plugins_destroy(context); +#endif + + if (context->lws_lookup) + lws_free(context->lws_lookup); + + if (!context->fd_random) + lwsl_err("ZERO RANDOM FD\n"); + if (context->fd_random != LWS_INVALID_FILE) + close(context->fd_random); +} + +/* cast a struct sockaddr_in6 * into addr for ipv6 */ + +LWS_VISIBLE int +lws_interface_to_sa(int ipv6, const char *ifname, struct sockaddr_in *addr, + size_t addrlen) +{ + int rc = LWS_ITOSA_NOT_EXIST; + + struct ifaddrs *ifr; + struct ifaddrs *ifc; +#ifdef LWS_WITH_IPV6 + struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr; +#endif + + getifaddrs(&ifr); + for (ifc = ifr; ifc != NULL && rc; ifc = ifc->ifa_next) { + if (!ifc->ifa_addr) + continue; + + lwsl_debug(" interface %s vs %s (fam %d) ipv6 %d\n", ifc->ifa_name, ifname, ifc->ifa_addr->sa_family, ipv6); + + if (strcmp(ifc->ifa_name, ifname)) + continue; + + switch (ifc->ifa_addr->sa_family) { +#if defined(AF_PACKET) + case AF_PACKET: + /* interface exists but is not usable */ + rc = LWS_ITOSA_NOT_USABLE; + continue; +#endif + + case AF_INET: +#ifdef LWS_WITH_IPV6 + if (ipv6) { + /* map IPv4 to IPv6 */ + bzero((char *)&addr6->sin6_addr, + sizeof(struct in6_addr)); + addr6->sin6_addr.s6_addr[10] = 0xff; + addr6->sin6_addr.s6_addr[11] = 0xff; + memcpy(&addr6->sin6_addr.s6_addr[12], + &((struct sockaddr_in *)ifc->ifa_addr)->sin_addr, + sizeof(struct in_addr)); + } else +#endif + memcpy(addr, + (struct sockaddr_in *)ifc->ifa_addr, + sizeof(struct sockaddr_in)); + break; +#ifdef LWS_WITH_IPV6 + case AF_INET6: + memcpy(&addr6->sin6_addr, + &((struct sockaddr_in6 *)ifc->ifa_addr)->sin6_addr, + sizeof(struct in6_addr)); + break; +#endif + default: + continue; + } + rc = LWS_ITOSA_USABLE; + } + + freeifaddrs(ifr); + + if (rc) { + /* check if bind to IP address */ +#ifdef LWS_WITH_IPV6 + if (inet_pton(AF_INET6, ifname, &addr6->sin6_addr) == 1) + rc = LWS_ITOSA_USABLE; + else +#endif + if (inet_pton(AF_INET, ifname, &addr->sin_addr) == 1) + rc = LWS_ITOSA_USABLE; + } + + return rc; +} + +LWS_VISIBLE void +lws_plat_insert_socket_into_fds(struct lws_context *context, struct lws *wsi) +{ + struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi]; + + if (context->event_loop_ops->io) + context->event_loop_ops->io(wsi, LWS_EV_START | LWS_EV_READ); + + pt->fds[pt->fds_count++].revents = 0; +} + +LWS_VISIBLE void +lws_plat_delete_socket_from_fds(struct lws_context *context, + struct lws *wsi, int m) +{ + struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi]; + + if (context->event_loop_ops->io) + context->event_loop_ops->io(wsi, + LWS_EV_STOP | LWS_EV_READ | LWS_EV_WRITE); + + pt->fds_count--; +} + +LWS_VISIBLE void +lws_plat_service_periodic(struct lws_context *context) +{ + /* if our parent went down, don't linger around */ + if (context->started_with_parent && + kill(context->started_with_parent, 0) < 0) + kill(getpid(), SIGTERM); +} + +LWS_VISIBLE int +lws_plat_change_pollfd(struct lws_context *context, + struct lws *wsi, struct lws_pollfd *pfd) +{ + return 0; +} + +LWS_VISIBLE const char * +lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt) +{ + return inet_ntop(af, src, dst, cnt); +} + +LWS_VISIBLE int +lws_plat_inet_pton(int af, const char *src, void *dst) +{ + return inet_pton(af, src, dst); +} + +LWS_VISIBLE lws_fop_fd_t +_lws_plat_file_open(const struct lws_plat_file_ops *fops, const char *filename, + const char *vpath, lws_fop_flags_t *flags) +{ + struct stat stat_buf; + int ret = open(filename, (*flags) & LWS_FOP_FLAGS_MASK, 0664); + lws_fop_fd_t fop_fd; + + if (ret < 0) + return NULL; + + if (fstat(ret, &stat_buf) < 0) + goto bail; + + fop_fd = malloc(sizeof(*fop_fd)); + if (!fop_fd) + goto bail; + + fop_fd->fops = fops; + fop_fd->flags = *flags; + fop_fd->fd = ret; + fop_fd->filesystem_priv = NULL; /* we don't use it */ + fop_fd->len = stat_buf.st_size; + fop_fd->pos = 0; + + return fop_fd; + +bail: + close(ret); + return NULL; +} + +LWS_VISIBLE int +_lws_plat_file_close(lws_fop_fd_t *fop_fd) +{ + int fd = (*fop_fd)->fd; + + free(*fop_fd); + *fop_fd = NULL; + + return close(fd); +} + +LWS_VISIBLE lws_fileofs_t +_lws_plat_file_seek_cur(lws_fop_fd_t fop_fd, lws_fileofs_t offset) +{ + lws_fileofs_t r; + + if (offset > 0 && + offset > (lws_fileofs_t)fop_fd->len - (lws_fileofs_t)fop_fd->pos) + offset = fop_fd->len - fop_fd->pos; + + if ((lws_fileofs_t)fop_fd->pos + offset < 0) + offset = -fop_fd->pos; + + r = lseek(fop_fd->fd, offset, SEEK_CUR); + + if (r >= 0) + fop_fd->pos = r; + else + lwsl_err("error seeking from cur %ld, offset %ld\n", + (long)fop_fd->pos, (long)offset); + + return r; +} + +LWS_VISIBLE int +_lws_plat_file_read(lws_fop_fd_t fop_fd, lws_filepos_t *amount, + uint8_t *buf, lws_filepos_t len) +{ + long n; + + n = read((int)fop_fd->fd, buf, len); + if (n == -1) { + *amount = 0; + return -1; + } + fop_fd->pos += n; + lwsl_debug("%s: read %ld of req %ld, pos %ld, len %ld\n", __func__, n, + (long)len, (long)fop_fd->pos, (long)fop_fd->len); + *amount = n; + + return 0; +} + +LWS_VISIBLE int +_lws_plat_file_write(lws_fop_fd_t fop_fd, lws_filepos_t *amount, + uint8_t *buf, lws_filepos_t len) +{ + long n; + + n = write((int)fop_fd->fd, buf, len); + if (n == -1) { + *amount = 0; + return -1; + } + + fop_fd->pos += n; + *amount = n; + + return 0; +} + +LWS_VISIBLE int +lws_plat_init(struct lws_context *context, + const struct lws_context_creation_info *info) +{ + int fd; + + /* master context has the global fd lookup array */ + context->lws_lookup = lws_zalloc(sizeof(struct lws *) * + context->max_fds, "lws_lookup"); + if (context->lws_lookup == NULL) { + lwsl_err("OOM on lws_lookup array for %d connections\n", + context->max_fds); + return 1; + } + + lwsl_info(" mem: platform fd map: %5lu bytes\n", + (unsigned long)(sizeof(struct lws *) * context->max_fds)); + fd = open(SYSTEM_RANDOM_FILEPATH, O_RDONLY); + + context->fd_random = fd; + if (context->fd_random < 0) { + lwsl_err("Unable to open random device %s %d\n", + SYSTEM_RANDOM_FILEPATH, context->fd_random); + return 1; + } + +#ifdef LWS_WITH_PLUGINS + if (info->plugin_dirs) + lws_plat_plugins_init(context, info->plugin_dirs); +#endif + + return 0; +} + +LWS_VISIBLE int +lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf, + int len) +{ + int n; + + n = write(fd, buf, len); + + fsync(fd); + lseek(fd, 0, SEEK_SET); + + return n != len; +} + +LWS_VISIBLE int +lws_plat_write_file(const char *filename, void *buf, int len) +{ + int m, fd; + + fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600); + + if (fd == -1) + return 1; + + m = write(fd, buf, len); + close(fd); + + return m != len; +} + +LWS_VISIBLE int +lws_plat_read_file(const char *filename, void *buf, int len) +{ + int n, fd = lws_open(filename, O_RDONLY); + if (fd == -1) + return -1; + + n = read(fd, buf, len); + close(fd); + + return n; +} + +LWS_VISIBLE int +lws_plat_recommended_rsa_bits(void) +{ + return 4096; +} |