#include <string.h>
#include <unistd.h>
#include <fcntl.h>
+#include <getopt.h>
#include <microhttpd.h>
#include "util.h"
#include "sd-journal.h"
#include "sd-daemon.h"
+#include "sd-bus.h"
+#include "bus-util.h"
#include "logs-show.h"
-#include "virt.h"
+#include "microhttpd-util.h"
+#include "build.h"
+#include "fileio.h"
typedef struct RequestMeta {
sd_journal *journal;
bool follow;
bool discrete;
+
+ uint64_t n_fields;
+ bool n_fields_set;
} RequestMeta;
static const char* const mime_types[_OUTPUT_MODE_MAX] = {
if (m->journal)
return 0;
- return sd_journal_open(&m->journal, SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM_ONLY);
+ return sd_journal_open(&m->journal, SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM);
}
-
-static int respond_oom(struct MHD_Connection *connection) {
+static int respond_oom_internal(struct MHD_Connection *connection) {
struct MHD_Response *response;
const char m[] = "Out of memory.\n";
int ret;
return ret;
}
+#define respond_oom(connection) log_oom(), respond_oom_internal(connection)
+
static int respond_error(
struct MHD_Connection *connection,
unsigned code,
m->tmp = tmpfile();
if (!m->tmp) {
log_error("Failed to create temporary file: %m");
- return MHD_CONTENT_READER_END_WITH_ERROR;;
+ return MHD_CONTENT_READER_END_WITH_ERROR;
}
}
- r = output_journal(m->tmp, m->journal, m->mode, 0, OUTPUT_FULL_WIDTH);
+ r = output_journal(m->tmp, m->journal, m->mode, 0, OUTPUT_FULL_WIDTH, NULL);
if (r < 0) {
log_error("Failed to serialize item: %s", strerror(-r));
return MHD_CONTENT_READER_END_WITH_ERROR;
colon2 = strchr(colon + 1, ':');
if (colon2) {
- char *t;
+ _cleanup_free_ char *t;
t = strndup(colon + 1, colon2 - colon - 1);
if (!t)
return -ENOMEM;
r = safe_atoi64(t, &m->n_skip);
- free(t);
if (r < 0)
return r;
}
return MHD_YES;
}
+ if (streq(key, "boot")) {
+ if (isempty(value))
+ r = true;
+ else {
+ r = parse_boolean(value);
+ if (r < 0) {
+ m->argument_parse_error = r;
+ return MHD_NO;
+ }
+ }
+
+ if (r) {
+ char match[9 + 32 + 1] = "_BOOT_ID=";
+ sd_id128_t bid;
+
+ r = sd_id128_get_boot(&bid);
+ if (r < 0) {
+ log_error("Failed to get boot ID: %s", strerror(-r));
+ return MHD_NO;
+ }
+
+ sd_id128_to_string(bid, match + 9);
+ r = sd_journal_add_match(m->journal, match, sizeof(match)-1);
+ if (r < 0) {
+ m->argument_parse_error = r;
+ return MHD_NO;
+ }
+ }
+
+ return MHD_YES;
+ }
+
p = strjoin(key, "=", strempty(value), NULL);
if (!p) {
m->argument_parse_error = log_oom();
static int request_handler_entries(
struct MHD_Connection *connection,
- void **connection_cls) {
+ void *connection_cls) {
struct MHD_Response *response;
- RequestMeta *m;
+ RequestMeta *m = connection_cls;
int r;
assert(connection);
- assert(connection_cls);
-
- m = request_meta(connection_cls);
- if (!m)
- return respond_oom(connection);
+ assert(m);
r = open_journal(m);
if (r < 0)
return r;
}
+static int output_field(FILE *f, OutputMode m, const char *d, size_t l) {
+ const char *eq;
+ size_t j;
+
+ eq = memchr(d, '=', l);
+ if (!eq)
+ return -EINVAL;
+
+ j = l - (eq - d + 1);
+
+ if (m == OUTPUT_JSON) {
+ fprintf(f, "{ \"%.*s\" : ", (int) (eq - d), d);
+ json_escape(f, eq+1, j, OUTPUT_FULL_WIDTH);
+ fputs(" }\n", f);
+ } else {
+ fwrite(eq+1, 1, j, f);
+ fputc('\n', f);
+ }
+
+ return 0;
+}
+
+static ssize_t request_reader_fields(
+ void *cls,
+ uint64_t pos,
+ char *buf,
+ size_t max) {
+
+ RequestMeta *m = cls;
+ int r;
+ size_t n, k;
+
+ assert(m);
+ assert(buf);
+ assert(max > 0);
+ assert(pos >= m->delta);
+
+ pos -= m->delta;
+
+ while (pos >= m->size) {
+ off_t sz;
+ const void *d;
+ size_t l;
+
+ /* End of this field, so let's serialize the next
+ * one */
+
+ if (m->n_fields_set &&
+ m->n_fields <= 0)
+ return MHD_CONTENT_READER_END_OF_STREAM;
+
+ r = sd_journal_enumerate_unique(m->journal, &d, &l);
+ if (r < 0) {
+ log_error("Failed to advance field index: %s", strerror(-r));
+ return MHD_CONTENT_READER_END_WITH_ERROR;
+ } else if (r == 0)
+ return MHD_CONTENT_READER_END_OF_STREAM;
+
+ pos -= m->size;
+ m->delta += m->size;
+
+ if (m->n_fields_set)
+ m->n_fields -= 1;
+
+ if (m->tmp)
+ rewind(m->tmp);
+ else {
+ m->tmp = tmpfile();
+ if (!m->tmp) {
+ log_error("Failed to create temporary file: %m");
+ return MHD_CONTENT_READER_END_WITH_ERROR;
+ }
+ }
+
+ r = output_field(m->tmp, m->mode, d, l);
+ if (r < 0) {
+ log_error("Failed to serialize item: %s", strerror(-r));
+ return MHD_CONTENT_READER_END_WITH_ERROR;
+ }
+
+ sz = ftello(m->tmp);
+ if (sz == (off_t) -1) {
+ log_error("Failed to retrieve file position: %m");
+ return MHD_CONTENT_READER_END_WITH_ERROR;
+ }
+
+ m->size = (uint64_t) sz;
+ }
+
+ if (fseeko(m->tmp, pos, SEEK_SET) < 0) {
+ log_error("Failed to seek to position: %m");
+ return MHD_CONTENT_READER_END_WITH_ERROR;
+ }
+
+ n = m->size - pos;
+ if (n > max)
+ n = max;
+
+ errno = 0;
+ k = fread(buf, 1, n, m->tmp);
+ if (k != n) {
+ log_error("Failed to read from file: %s", errno ? strerror(errno) : "Premature EOF");
+ return MHD_CONTENT_READER_END_WITH_ERROR;
+ }
+
+ return (ssize_t) k;
+}
+
+static int request_handler_fields(
+ struct MHD_Connection *connection,
+ const char *field,
+ void *connection_cls) {
+
+ struct MHD_Response *response;
+ RequestMeta *m = connection_cls;
+ int r;
+
+ assert(connection);
+ assert(m);
+
+ r = open_journal(m);
+ if (r < 0)
+ return respond_error(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, "Failed to open journal: %s\n", strerror(-r));
+
+ if (request_parse_accept(m, connection) < 0)
+ return respond_error(connection, MHD_HTTP_BAD_REQUEST, "Failed to parse Accept header.\n");
+
+ r = sd_journal_query_unique(m->journal, field);
+ if (r < 0)
+ return respond_error(connection, MHD_HTTP_BAD_REQUEST, "Failed to query unique fields.\n");
+
+ response = MHD_create_response_from_callback(MHD_SIZE_UNKNOWN, 4*1024, request_reader_fields, m, NULL);
+ if (!response)
+ return respond_oom(connection);
+
+ MHD_add_response_header(response, "Content-Type", mime_types[m->mode == OUTPUT_JSON ? OUTPUT_JSON : OUTPUT_SHORT]);
+
+ r = MHD_queue_response(connection, MHD_HTTP_OK, response);
+ MHD_destroy_response(response);
+
+ return r;
+}
+
static int request_handler_redirect(
struct MHD_Connection *connection,
const char *target) {
return ret;
}
+static int get_virtualization(char **v) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
+ const char *t;
+ char *b;
+ int r;
+
+ r = sd_bus_open_system(&bus);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.DBus.Properties",
+ "Get",
+ NULL,
+ &reply,
+ "ss",
+ "org.freedesktop.systemd1.Manager",
+ "Virtualization");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(reply, "v", "s", &t);
+ if (r < 0)
+ return r;
+
+ if (isempty(t)) {
+ *v = NULL;
+ return 0;
+ }
+
+ b = strdup(t);
+ if (!b)
+ return -ENOMEM;
+
+ *v = b;
+ return 1;
+}
+
static int request_handler_machine(
struct MHD_Connection *connection,
- void **connection_cls) {
+ void *connection_cls) {
struct MHD_Response *response;
- RequestMeta *m;
+ RequestMeta *m = connection_cls;
int r;
_cleanup_free_ char* hostname = NULL, *os_name = NULL;
uint64_t cutoff_from, cutoff_to, usage;
char *json;
sd_id128_t mid, bid;
- const char *v = "bare";
+ _cleanup_free_ char *v = NULL;
assert(connection);
-
- m = request_meta(connection_cls);
- if (!m)
- return respond_oom(connection);
+ assert(m);
r = open_journal(m);
if (r < 0)
parse_env_file("/etc/os-release", NEWLINE, "PRETTY_NAME", &os_name, NULL);
- detect_virtualization(&v);
+ get_virtualization(&v);
r = asprintf(&json,
"{ \"machine_id\" : \"" SD_ID128_FORMAT_STR "\","
"\"hostname\" : \"%s\","
"\"os_pretty_name\" : \"%s\","
"\"virtualization\" : \"%s\","
- "\"usage\" : \"%llu\","
- "\"cutoff_from_realtime\" : \"%llu\","
- "\"cutoff_to_realtime\" : \"%llu\" }\n",
+ "\"usage\" : \"%"PRIu64"\","
+ "\"cutoff_from_realtime\" : \"%"PRIu64"\","
+ "\"cutoff_to_realtime\" : \"%"PRIu64"\" }\n",
SD_ID128_FORMAT_VAL(mid),
SD_ID128_FORMAT_VAL(bid),
- hostname_cleanup(hostname),
+ hostname_cleanup(hostname, false),
os_name ? os_name : "Linux",
- v,
- (unsigned long long) usage,
- (unsigned long long) cutoff_from,
- (unsigned long long) cutoff_to);
+ v ? v : "bare",
+ usage,
+ cutoff_from,
+ cutoff_to);
if (r < 0)
return respond_oom(connection);
void **connection_cls) {
assert(connection);
+ assert(connection_cls);
assert(url);
assert(method);
if (!streq(method, "GET"))
- return MHD_NO;
+ return respond_error(connection, MHD_HTTP_METHOD_NOT_ACCEPTABLE,
+ "Unsupported method.\n");
+
+
+ if (!*connection_cls) {
+ if (!request_meta(connection_cls))
+ return respond_oom(connection);
+ return MHD_YES;
+ }
if (streq(url, "/"))
return request_handler_redirect(connection, "/browse");
if (streq(url, "/entries"))
- return request_handler_entries(connection, connection_cls);
+ return request_handler_entries(connection, *connection_cls);
+
+ if (startswith(url, "/fields/"))
+ return request_handler_fields(connection, url + 8, *connection_cls);
if (streq(url, "/browse"))
return request_handler_file(connection, DOCUMENT_ROOT "/browse.html", "text/html");
if (streq(url, "/machine"))
- return request_handler_machine(connection, connection_cls);
+ return request_handler_machine(connection, *connection_cls);
return respond_error(connection, MHD_HTTP_NOT_FOUND, "Not found.\n");
}
-int main(int argc, char *argv[]) {
- struct MHD_Daemon *d = NULL;
- int r = EXIT_FAILURE, n;
+static int help(void) {
+
+ printf("%s [OPTIONS...] ...\n\n"
+ "HTTP server for journal events.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --cert=CERT.PEM Specify server certificate in PEM format\n"
+ " --key=KEY.PEM Specify server key in PEM format\n",
+ program_invocation_short_name);
- if (argc > 1) {
+ return 0;
+}
+
+static char *key_pem = NULL;
+static char *cert_pem = NULL;
+
+static int parse_argv(int argc, char *argv[]) {
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_KEY,
+ ARG_CERT,
+ };
+
+ int r, c;
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "key", required_argument, NULL, ARG_KEY },
+ { "cert", required_argument, NULL, ARG_CERT },
+ { NULL, 0, NULL, 0 }
+ };
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+ switch(c) {
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case 'h':
+ return help();
+
+ case ARG_KEY:
+ if (key_pem) {
+ log_error("Key file specified twice");
+ return -EINVAL;
+ }
+ r = read_full_file(optarg, &key_pem, NULL);
+ if (r < 0) {
+ log_error("Failed to read key file: %s", strerror(-r));
+ return r;
+ }
+ assert(key_pem);
+ break;
+
+ case ARG_CERT:
+ if (cert_pem) {
+ log_error("Certificate file specified twice");
+ return -EINVAL;
+ }
+ r = read_full_file(optarg, &cert_pem, NULL);
+ if (r < 0) {
+ log_error("Failed to read certificate file: %s", strerror(-r));
+ return r;
+ }
+ assert(cert_pem);
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+
+ if (optind < argc) {
log_error("This program does not take arguments.");
- goto finish;
+ return -EINVAL;
+ }
+
+ if (!!key_pem != !!cert_pem) {
+ log_error("Certificate and key files must be specified together");
+ return -EINVAL;
}
+ return 1;
+}
+
+int main(int argc, char *argv[]) {
+ struct MHD_Daemon *d = NULL;
+ int r, n;
+
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
+ r = parse_argv(argc, argv);
+ if (r < 0)
+ return EXIT_FAILURE;
+ if (r == 0)
+ return EXIT_SUCCESS;
+
n = sd_listen_fds(1);
if (n < 0) {
log_error("Failed to determine passed sockets: %s", strerror(-n));
} else if (n > 1) {
log_error("Can't listen on more than one socket.");
goto finish;
- } else if (n > 0) {
- d = MHD_start_daemon(
- MHD_USE_THREAD_PER_CONNECTION|MHD_USE_POLL|MHD_USE_DEBUG,
- 19531,
- NULL, NULL,
- request_handler, NULL,
- MHD_OPTION_LISTEN_SOCKET, SD_LISTEN_FDS_START,
- MHD_OPTION_NOTIFY_COMPLETED, request_meta_free, NULL,
- MHD_OPTION_END);
} else {
- d = MHD_start_daemon(
- MHD_USE_DEBUG|MHD_USE_THREAD_PER_CONNECTION|MHD_USE_POLL,
- 19531,
- NULL, NULL,
- request_handler, NULL,
- MHD_OPTION_NOTIFY_COMPLETED, request_meta_free, NULL,
- MHD_OPTION_END);
+ struct MHD_OptionItem opts[] = {
+ { MHD_OPTION_NOTIFY_COMPLETED,
+ (intptr_t) request_meta_free, NULL },
+ { MHD_OPTION_EXTERNAL_LOGGER,
+ (intptr_t) microhttpd_logger, NULL },
+ { MHD_OPTION_END, 0, NULL },
+ { MHD_OPTION_END, 0, NULL },
+ { MHD_OPTION_END, 0, NULL },
+ { MHD_OPTION_END, 0, NULL }};
+ int opts_pos = 2;
+ int flags = MHD_USE_THREAD_PER_CONNECTION|MHD_USE_POLL|MHD_USE_DEBUG;
+
+ if (n > 0)
+ opts[opts_pos++] = (struct MHD_OptionItem)
+ {MHD_OPTION_LISTEN_SOCKET, SD_LISTEN_FDS_START};
+ if (key_pem) {
+ assert(cert_pem);
+ opts[opts_pos++] = (struct MHD_OptionItem)
+ {MHD_OPTION_HTTPS_MEM_KEY, 0, key_pem};
+ opts[opts_pos++] = (struct MHD_OptionItem)
+ {MHD_OPTION_HTTPS_MEM_CERT, 0, cert_pem};
+ flags |= MHD_USE_SSL;
+ }
+
+ d = MHD_start_daemon(flags, 19531,
+ NULL, NULL,
+ request_handler, NULL,
+ MHD_OPTION_ARRAY, opts,
+ MHD_OPTION_END);
}
if (!d) {
~ianmdlvl / elogind.git / blobdiff