chiark / gitweb /
timedated: use libsystemd-bus instead of libdbus for bus communication
[elogind.git] / src / journal / journal-gatewayd.c
index bb9bd44c7a49e1fef8e12b0c1fca9ac195aaa297..d4d4b7ef043d17401650b4a5b4759a1e71c78df9 100644 (file)
 #include "util.h"
 #include "sd-journal.h"
 #include "sd-daemon.h"
+#include "sd-bus.h"
+#include "bus-util.h"
 #include "logs-show.h"
 #include "microhttpd-util.h"
-#include "virt.h"
 #include "build.h"
+#include "fileio.h"
 
 typedef struct RequestMeta {
         sd_journal *journal;
@@ -106,11 +108,10 @@ static int open_journal(RequestMeta *m) {
         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;
@@ -128,6 +129,8 @@ static int respond_oom(struct MHD_Connection *connection) {
         return ret;
 }
 
+#define respond_oom(connection) log_oom(), respond_oom_internal(connection)
+
 static int respond_error(
                 struct MHD_Connection *connection,
                 unsigned code,
@@ -244,7 +247,7 @@ static ssize_t request_reader_entries(
                         }
                 }
 
-                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;
@@ -331,7 +334,7 @@ static int request_parse_range(
 
                 colon2 = strchr(colon + 1, ':');
                 if (colon2) {
-                        char _cleanup_free_ *t;
+                        _cleanup_free_ char *t;
 
                         t = strndup(colon + 1, colon2 - colon - 1);
                         if (!t)
@@ -480,18 +483,14 @@ static int request_parse_arguments(
 
 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)
@@ -649,15 +648,11 @@ static int request_handler_fields(
                 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)
@@ -746,24 +741,63 @@ static int request_handler_file(
         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)
@@ -791,7 +825,7 @@ static int request_handler_machine(
 
         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 "\","
@@ -799,17 +833,17 @@ static int request_handler_machine(
                      "\"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);
@@ -838,30 +872,52 @@ static int request_handler(
                 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);
+                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");
 }
 
+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);
+
+        return 0;
+}
+
 static char *key_pem = NULL;
 static char *cert_pem = NULL;
 
@@ -875,6 +931,7 @@ static int parse_argv(int argc, char *argv[]) {
         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    },
@@ -884,13 +941,16 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
+        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");