Code

sysdb: Use a pager for displaying query results in interactive mode.
[sysdb.git] / src / tools / sysdb / main.c
index 05c5b9fb6d6ce6f6d57cb45f04666dff37e775a7..1f3975a7949b52491d4b0b2fe37660260e556649 100644 (file)
 #include "utils/error.h"
 #include "utils/llist.h"
 #include "utils/strbuf.h"
+#include "utils/os.h"
+#include "utils/ssl.h"
 
 #include <errno.h>
+#include <time.h>
 
 #if HAVE_LIBGEN_H
 #      include <libgen.h>
 
 #include <sys/stat.h>
 #include <fcntl.h>
-
+#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-
 #include <unistd.h>
 
 #include <sys/types.h>
 #      define DEFAULT_SOCKET "unix:"LOCALSTATEDIR"/run/sysdbd.sock"
 #endif
 
-static const char *
-get_current_user(void)
-{
-       struct passwd pw_entry;
-       struct passwd *result = NULL;
-
-       uid_t uid;
-
-       /* needs to be static because we return a pointer into this buffer
-        * to the caller */
-       static char buf[1024];
-
-       int status;
+static sdb_ssl_options_t ssl_options = {
+       /* ca_file */   SDB_SSL_CAFILE,
+       /* key_file */  "~/.config/sysdb/ssl/key.pem",
+       /* cert_file */ "~/.config/sysdb/ssl/cert.pem",
+       /* crl_file */  "~/.config/sysdb/ssl/crl.pem",
+};
 
-       uid = geteuid();
-
-       memset(&pw_entry, 0, sizeof(pw_entry));
-       status = getpwuid_r(uid, &pw_entry, buf, sizeof(buf), &result);
-
-       if (status || (! result)) {
-               char errbuf[1024];
-               sdb_log(SDB_LOG_ERR, "Failed to determine current username: %s",
-                               sdb_strerror(errno, errbuf, sizeof(errbuf)));
-               return NULL;
-       }
-       return result->pw_name;
-} /* get_current_user */
-
-static const char *
-get_homedir(const char *username)
+static void
+canonicalize_ssl_options(void)
 {
-       struct passwd pw_entry;
-       struct passwd *result = NULL;
-
-       /* needs to be static because we return a pointer into this buffer
-        * to the caller */
-       static char buf[1024];
-
-       int status;
-
-       memset(&pw_entry, 0, sizeof(pw_entry));
-       status = getpwnam_r(username, &pw_entry, buf, sizeof(buf), &result);
-
-       if (status || (! result)) {
-               char errbuf[1024];
-               sdb_log(SDB_LOG_WARNING, "Failed to determine home directory "
-                               "for user %s: %s", username,
-                               sdb_strerror(errno, errbuf, sizeof(errbuf)));
-               return NULL;
+       char *tmp;
+       if (ssl_options.ca_file) {
+               tmp = sdb_realpath(ssl_options.ca_file);
+               ssl_options.ca_file = tmp ? tmp : strdup(ssl_options.ca_file);
+       }
+       if (ssl_options.key_file) {
+               tmp = sdb_realpath(ssl_options.key_file);
+               ssl_options.key_file = tmp ? tmp : strdup(ssl_options.key_file);
+       }
+       if (ssl_options.cert_file) {
+               tmp = sdb_realpath(ssl_options.cert_file);
+               ssl_options.cert_file = tmp ? tmp : strdup(ssl_options.cert_file);
        }
-       return result->pw_dir;
-} /* get_homedir */
+       if (ssl_options.crl_file) {
+               tmp = sdb_realpath(ssl_options.crl_file);
+               ssl_options.crl_file = tmp ? tmp : strdup(ssl_options.crl_file);
+       }
+} /* canonicalize_ssl_options */
 
 static void
 exit_usage(char *name, int status)
 {
+       char *user = sdb_get_current_user();
        printf(
 "Usage: %s <options>\n"
 
-"\nOptions:\n"
-"  -H HOST   the host to connect to\n"
-"            default: "DEFAULT_SOCKET"\n"
-"  -U USER   the username to connect as\n"
-"            default: %s\n"
-"  -c CMD    execute the specified command and then exit\n"
+"Connection options:\n"
+"  -H HOST      the host to connect to\n"
+"               default: "DEFAULT_SOCKET"\n"
+"  -U USER      the username to connect as\n"
+"               default: %s\n"
+"  -c CMD       execute the specified command and then exit\n"
+"\n"
+"SSL options:\n"
+"  -K KEYFILE   private key file name\n"
+"               default: %s\n"
+"  -C CERTFILE  client certificate file name\n"
+"               default: %s\n"
+"  -A CAFILE    CA certificates file name\n"
+"               default: %s\n"
+"\n"
+"General options:\n"
 "\n"
-"  -h        display this help and exit\n"
-"  -V        display the version number and copyright\n"
+"  -h           display this help and exit\n"
+"  -V           display the version number and copyright\n"
 
 "\nSysDB client "SDB_CLIENT_VERSION_STRING SDB_CLIENT_VERSION_EXTRA", "
-PACKAGE_URL"\n", basename(name), get_current_user());
+PACKAGE_URL"\n", basename(name), user,
+                       ssl_options.key_file, ssl_options.cert_file, ssl_options.ca_file);
+
+       free(user);
        exit(status);
 } /* exit_usage */
 
@@ -171,7 +163,7 @@ exit_version(void)
 } /* exit_version */
 
 static int
-execute_commands(sdb_client_t *client, sdb_llist_t *commands)
+execute_commands(sdb_input_t *input, sdb_llist_t *commands)
 {
        sdb_llist_iter_t *iter;
        int status = 0;
@@ -185,7 +177,7 @@ execute_commands(sdb_client_t *client, sdb_llist_t *commands)
        while (sdb_llist_iter_has_next(iter)) {
                sdb_object_t *obj = sdb_llist_iter_get_next(iter);
 
-               if (sdb_client_send(client, CONNECTION_QUERY,
+               if (sdb_client_send(input->client, SDB_CONNECTION_QUERY,
                                        (uint32_t)strlen(obj->name), obj->name) <= 0) {
                        sdb_log(SDB_LOG_ERR, "Failed to send command '%s' to server",
                                        obj->name);
@@ -194,21 +186,29 @@ execute_commands(sdb_client_t *client, sdb_llist_t *commands)
                }
 
                /* Wait for server replies. We might get any number of log messages
-                * but eventually see the reply to the query, which is either OK or
+                * but eventually see the reply to the query, which is either DATA or
                 * ERROR. */
                while (42) {
-                       status = sdb_command_print_reply(client);
+                       status = sdb_command_print_reply(input);
                        if (status < 0) {
                                sdb_log(SDB_LOG_ERR, "Failed to read reply from server");
                                break;
                        }
 
-                       if ((status == CONNECTION_OK) || (status == CONNECTION_ERROR))
+                       if ((status == SDB_CONNECTION_DATA)
+                                       || (status == SDB_CONNECTION_ERROR))
+                               break;
+                       if (status == SDB_CONNECTION_OK) {
+                               /* pre 0.4 versions used OK instead of DATA */
+                               sdb_log(SDB_LOG_WARNING, "Received unexpected OK status from "
+                                               "server in response to a QUERY (expected DATA); "
+                                               "assuming we're talking to an old server");
                                break;
+                       }
                }
 
-               if (status)
-                       break;
+               if ((status != SDB_CONNECTION_OK) && (status != SDB_CONNECTION_DATA))
+                       break; /* error */
        }
 
        sdb_llist_iter_destroy(iter);
@@ -219,16 +219,15 @@ int
 main(int argc, char **argv)
 {
        const char *host = NULL;
-       const char *user = NULL;
 
-       const char *homedir;
+       char *homedir;
        char hist_file[1024] = "";
 
        sdb_input_t input = SDB_INPUT_INIT;
        sdb_llist_t *commands = NULL;
 
        while (42) {
-               int opt = getopt(argc, argv, "H:U:c:hV");
+               int opt = getopt(argc, argv, "H:U:c:C:K:A:hV");
 
                if (-1 == opt)
                        break;
@@ -238,7 +237,7 @@ main(int argc, char **argv)
                                host = optarg;
                                break;
                        case 'U':
-                               user = optarg;
+                               input.user = optarg;
                                break;
 
                        case 'c':
@@ -265,6 +264,16 @@ main(int argc, char **argv)
                                }
                                break;
 
+                       case 'C':
+                               ssl_options.cert_file = optarg;
+                               break;
+                       case 'K':
+                               ssl_options.key_file = optarg;
+                               break;
+                       case 'A':
+                               ssl_options.ca_file = optarg;
+                               break;
+
                        case 'h':
                                exit_usage(argv[0], 0);
                                break;
@@ -281,40 +290,64 @@ main(int argc, char **argv)
 
        if (! host)
                host = DEFAULT_SOCKET;
-       if (! user) {
-               user = get_current_user();
-               if (! user)
-                       exit(1);
-       }
+       if (! input.user)
+               input.user = sdb_get_current_user();
+       else
+               input.user = strdup(input.user);
+       if (! input.user)
+               exit(1);
+
+       if (sdb_ssl_init())
+               exit(1);
 
        input.client = sdb_client_create(host);
        if (! input.client) {
                sdb_log(SDB_LOG_ERR, "Failed to create client object");
+               sdb_input_reset(&input);
                exit(1);
        }
-       if (sdb_client_connect(input.client, user)) {
+       input.input = sdb_strbuf_create(2048);
+       sdb_input_init(&input);
+
+       canonicalize_ssl_options();
+       if (sdb_client_set_ssl_options(input.client, &ssl_options)) {
+               sdb_log(SDB_LOG_ERR, "Failed to apply SSL options");
+               sdb_input_reset(&input);
+               sdb_ssl_free_options(&ssl_options);
+               exit(1);
+       }
+       sdb_ssl_free_options(&ssl_options);
+       if (sdb_client_connect(input.client, input.user)) {
                sdb_log(SDB_LOG_ERR, "Failed to connect to SysDBd");
-               sdb_client_destroy(input.client);
+               sdb_input_reset(&input);
                exit(1);
        }
 
        if (commands) {
-               int status = execute_commands(input.client, commands);
+               int status;
+               input.interactive = 0;
+               status = execute_commands(&input, commands);
                sdb_llist_destroy(commands);
-               sdb_client_destroy(input.client);
-               exit(status);
+               sdb_input_reset(&input);
+               if ((status != SDB_CONNECTION_OK) && (status != SDB_CONNECTION_DATA))
+                       exit(1);
+               exit(0);
        }
 
        sdb_log(SDB_LOG_INFO, "SysDB client "SDB_CLIENT_VERSION_STRING
-                       SDB_CLIENT_VERSION_EXTRA" (libsysdbclient %s%s)\n",
+                       SDB_CLIENT_VERSION_EXTRA" (libsysdbclient %s%s)",
                        sdb_client_version_string(), sdb_client_version_extra());
+       sdb_command_print_server_version(&input);
+       printf("\n");
 
        using_history();
 
-       if ((homedir = get_homedir(user))) {
+       if ((homedir = sdb_get_homedir())) {
                snprintf(hist_file, sizeof(hist_file) - 1,
                                "%s/.sysdb_history", homedir);
                hist_file[sizeof(hist_file) - 1] = '\0';
+               free(homedir);
+               homedir = NULL;
 
                errno = 0;
                if (read_history(hist_file) && (errno != ENOENT)) {
@@ -324,10 +357,17 @@ main(int argc, char **argv)
                }
        }
 
-       input.input = sdb_strbuf_create(2048);
-       sdb_input_init(&input);
+       signal(SIGPIPE, SIG_IGN);
+       signal(SIGCHLD, SIG_IGN);
+
        sdb_input_mainloop();
 
+       sdb_client_shutdown(input.client, SHUT_WR);
+       while (! sdb_client_eof(input.client)) {
+               /* wait for remaining data to arrive */
+               sdb_command_print_reply(&input);
+       }
+
        if (hist_file[0] != '\0') {
                errno = 0;
                if (write_history(hist_file)) {
@@ -337,8 +377,8 @@ main(int argc, char **argv)
                }
        }
 
-       sdb_client_destroy(input.client);
-       sdb_strbuf_destroy(input.input);
+       sdb_input_reset(&input);
+       sdb_ssl_shutdown();
        return 0;
 } /* main */