diff options
Diffstat (limited to 'src/journal/journald-stream.c')
| -rw-r--r-- | src/journal/journald-stream.c | 459 |
1 files changed, 0 insertions, 459 deletions
diff --git a/src/journal/journald-stream.c b/src/journal/journald-stream.c deleted file mode 100644 index 7b88f747db..0000000000 --- a/src/journal/journald-stream.c +++ /dev/null @@ -1,459 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2011 Lennart Poettering - - systemd 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; either version 2.1 of the License, or - (at your option) any later version. - - systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <fcntl.h> -#include <unistd.h> -#include <stddef.h> -#include <sys/epoll.h> - -#ifdef HAVE_SELINUX -#include <selinux/selinux.h> -#endif - -#include "socket-util.h" -#include "journald-server.h" -#include "journald-stream.h" -#include "journald-syslog.h" -#include "journald-kmsg.h" -#include "journald-console.h" - -#define STDOUT_STREAMS_MAX 4096 - -typedef enum StdoutStreamState { - STDOUT_STREAM_IDENTIFIER, - STDOUT_STREAM_UNIT_ID, - STDOUT_STREAM_PRIORITY, - STDOUT_STREAM_LEVEL_PREFIX, - STDOUT_STREAM_FORWARD_TO_SYSLOG, - STDOUT_STREAM_FORWARD_TO_KMSG, - STDOUT_STREAM_FORWARD_TO_CONSOLE, - STDOUT_STREAM_RUNNING -} StdoutStreamState; - -struct StdoutStream { - Server *server; - StdoutStreamState state; - - int fd; - - struct ucred ucred; -#ifdef HAVE_SELINUX - security_context_t security_context; -#endif - - char *identifier; - char *unit_id; - int priority; - bool level_prefix:1; - bool forward_to_syslog:1; - bool forward_to_kmsg:1; - bool forward_to_console:1; - - char buffer[LINE_MAX+1]; - size_t length; - - LIST_FIELDS(StdoutStream, stdout_stream); -}; - -static int stdout_stream_log(StdoutStream *s, const char *p) { - struct iovec iovec[N_IOVEC_META_FIELDS + 5]; - char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL, *syslog_identifier = NULL; - unsigned n = 0; - int priority; - char *label = NULL; - size_t label_len = 0; - - assert(s); - assert(p); - - if (isempty(p)) - return 0; - - priority = s->priority; - - if (s->level_prefix) - syslog_parse_priority((char**) &p, &priority); - - if (s->forward_to_syslog || s->server->forward_to_syslog) - server_forward_syslog(s->server, syslog_fixup_facility(priority), s->identifier, p, &s->ucred, NULL); - - if (s->forward_to_kmsg || s->server->forward_to_kmsg) - server_forward_kmsg(s->server, priority, s->identifier, p, &s->ucred); - - if (s->forward_to_console || s->server->forward_to_console) - server_forward_console(s->server, priority, s->identifier, p, &s->ucred); - - IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=stdout"); - - if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0) - IOVEC_SET_STRING(iovec[n++], syslog_priority); - - if (priority & LOG_FACMASK) - if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0) - IOVEC_SET_STRING(iovec[n++], syslog_facility); - - if (s->identifier) { - syslog_identifier = strappend("SYSLOG_IDENTIFIER=", s->identifier); - if (syslog_identifier) - IOVEC_SET_STRING(iovec[n++], syslog_identifier); - } - - message = strappend("MESSAGE=", p); - if (message) - IOVEC_SET_STRING(iovec[n++], message); - -#ifdef HAVE_SELINUX - if (s->security_context) { - label = (char*) s->security_context; - label_len = strlen((char*) s->security_context); - } -#endif - - server_dispatch_message(s->server, iovec, n, ELEMENTSOF(iovec), &s->ucred, NULL, label, label_len, s->unit_id, priority); - - free(message); - free(syslog_priority); - free(syslog_facility); - free(syslog_identifier); - - return 0; -} - -static int stdout_stream_line(StdoutStream *s, char *p) { - int r; - - assert(s); - assert(p); - - p = strstrip(p); - - switch (s->state) { - - case STDOUT_STREAM_IDENTIFIER: - if (isempty(p)) - s->identifier = NULL; - else { - s->identifier = strdup(p); - if (!s->identifier) - return log_oom(); - } - - s->state = STDOUT_STREAM_UNIT_ID; - return 0; - - case STDOUT_STREAM_UNIT_ID: - if (s->ucred.uid == 0) { - if (isempty(p)) - s->unit_id = NULL; - else { - s->unit_id = strdup(p); - if (!s->unit_id) - return log_oom(); - } - } - - s->state = STDOUT_STREAM_PRIORITY; - return 0; - - case STDOUT_STREAM_PRIORITY: - r = safe_atoi(p, &s->priority); - if (r < 0 || s->priority <= 0 || s->priority >= 999) { - log_warning("Failed to parse log priority line."); - return -EINVAL; - } - - s->state = STDOUT_STREAM_LEVEL_PREFIX; - return 0; - - case STDOUT_STREAM_LEVEL_PREFIX: - r = parse_boolean(p); - if (r < 0) { - log_warning("Failed to parse level prefix line."); - return -EINVAL; - } - - s->level_prefix = !!r; - s->state = STDOUT_STREAM_FORWARD_TO_SYSLOG; - return 0; - - case STDOUT_STREAM_FORWARD_TO_SYSLOG: - r = parse_boolean(p); - if (r < 0) { - log_warning("Failed to parse forward to syslog line."); - return -EINVAL; - } - - s->forward_to_syslog = !!r; - s->state = STDOUT_STREAM_FORWARD_TO_KMSG; - return 0; - - case STDOUT_STREAM_FORWARD_TO_KMSG: - r = parse_boolean(p); - if (r < 0) { - log_warning("Failed to parse copy to kmsg line."); - return -EINVAL; - } - - s->forward_to_kmsg = !!r; - s->state = STDOUT_STREAM_FORWARD_TO_CONSOLE; - return 0; - - case STDOUT_STREAM_FORWARD_TO_CONSOLE: - r = parse_boolean(p); - if (r < 0) { - log_warning("Failed to parse copy to console line."); - return -EINVAL; - } - - s->forward_to_console = !!r; - s->state = STDOUT_STREAM_RUNNING; - return 0; - - case STDOUT_STREAM_RUNNING: - return stdout_stream_log(s, p); - } - - assert_not_reached("Unknown stream state"); -} - -static int stdout_stream_scan(StdoutStream *s, bool force_flush) { - char *p; - size_t remaining; - int r; - - assert(s); - - p = s->buffer; - remaining = s->length; - for (;;) { - char *end; - size_t skip; - - end = memchr(p, '\n', remaining); - if (end) - skip = end - p + 1; - else if (remaining >= sizeof(s->buffer) - 1) { - end = p + sizeof(s->buffer) - 1; - skip = remaining; - } else - break; - - *end = 0; - - r = stdout_stream_line(s, p); - if (r < 0) - return r; - - remaining -= skip; - p += skip; - } - - if (force_flush && remaining > 0) { - p[remaining] = 0; - r = stdout_stream_line(s, p); - if (r < 0) - return r; - - p += remaining; - remaining = 0; - } - - if (p > s->buffer) { - memmove(s->buffer, p, remaining); - s->length = remaining; - } - - return 0; -} - -int stdout_stream_process(StdoutStream *s) { - ssize_t l; - int r; - - assert(s); - - l = read(s->fd, s->buffer+s->length, sizeof(s->buffer)-1-s->length); - if (l < 0) { - - if (errno == EAGAIN) - return 0; - - log_warning("Failed to read from stream: %m"); - return -errno; - } - - if (l == 0) { - r = stdout_stream_scan(s, true); - if (r < 0) - return r; - - return 0; - } - - s->length += l; - r = stdout_stream_scan(s, false); - if (r < 0) - return r; - - return 1; - -} - -void stdout_stream_free(StdoutStream *s) { - assert(s); - - if (s->server) { - assert(s->server->n_stdout_streams > 0); - s->server->n_stdout_streams --; - LIST_REMOVE(StdoutStream, stdout_stream, s->server->stdout_streams, s); - } - - if (s->fd >= 0) { - if (s->server) - epoll_ctl(s->server->epoll_fd, EPOLL_CTL_DEL, s->fd, NULL); - - close_nointr_nofail(s->fd); - } - -#ifdef HAVE_SELINUX - if (s->security_context) - freecon(s->security_context); -#endif - - free(s->identifier); - free(s); -} - -int stdout_stream_new(Server *s) { - StdoutStream *stream; - int fd, r; - socklen_t len; - struct epoll_event ev; - - assert(s); - - fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC); - if (fd < 0) { - if (errno == EAGAIN) - return 0; - - log_error("Failed to accept stdout connection: %m"); - return -errno; - } - - if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) { - log_warning("Too many stdout streams, refusing connection."); - close_nointr_nofail(fd); - return 0; - } - - stream = new0(StdoutStream, 1); - if (!stream) { - close_nointr_nofail(fd); - return log_oom(); - } - - stream->fd = fd; - - len = sizeof(stream->ucred); - if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &stream->ucred, &len) < 0) { - log_error("Failed to determine peer credentials: %m"); - r = -errno; - goto fail; - } - -#ifdef HAVE_SELINUX - if (getpeercon(fd, &stream->security_context) < 0 && errno != ENOPROTOOPT) - log_error("Failed to determine peer security context: %m"); -#endif - - if (shutdown(fd, SHUT_WR) < 0) { - log_error("Failed to shutdown writing side of socket: %m"); - r = -errno; - goto fail; - } - - zero(ev); - ev.data.ptr = stream; - ev.events = EPOLLIN; - if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) { - log_error("Failed to add stream to event loop: %m"); - r = -errno; - goto fail; - } - - stream->server = s; - LIST_PREPEND(StdoutStream, stdout_stream, s->stdout_streams, stream); - s->n_stdout_streams ++; - - return 0; - -fail: - stdout_stream_free(stream); - return r; -} - -int server_open_stdout_socket(Server *s) { - union sockaddr_union sa; - int r; - struct epoll_event ev; - - assert(s); - - if (s->stdout_fd < 0) { - - s->stdout_fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); - if (s->stdout_fd < 0) { - log_error("socket() failed: %m"); - return -errno; - } - - zero(sa); - sa.un.sun_family = AF_UNIX; - strncpy(sa.un.sun_path, "/run/systemd/journal/stdout", sizeof(sa.un.sun_path)); - - unlink(sa.un.sun_path); - - r = bind(s->stdout_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path)); - if (r < 0) { - log_error("bind() failed: %m"); - return -errno; - } - - chmod(sa.un.sun_path, 0666); - - if (listen(s->stdout_fd, SOMAXCONN) < 0) { - log_error("liste() failed: %m"); - return -errno; - } - } else - fd_nonblock(s->stdout_fd, 1); - - zero(ev); - ev.events = EPOLLIN; - ev.data.fd = s->stdout_fd; - if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->stdout_fd, &ev) < 0) { - log_error("Failed to add stdout server fd to epoll object: %m"); - return -errno; - } - - return 0; -} |