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Sourcecode: postgresql-8.4 version File versions

startup.c

/*
 * psql - the PostgreSQL interactive terminal
 *
 * Copyright (c) 2000-2009, PostgreSQL Global Development Group
 *
 * $PostgreSQL$
 */
#include "postgres_fe.h"

#include <sys/types.h>

#ifndef WIN32
#include <unistd.h>
#else                                     /* WIN32 */
#include <io.h>
#include <win32.h>
#endif   /* WIN32 */

#include "getopt_long.h"

#include <locale.h>

#include "command.h"
#include "common.h"
#include "describe.h"
#include "help.h"
#include "input.h"
#include "mainloop.h"
#include "settings.h"



/*
 * Global psql options
 */
PsqlSettings pset;

#ifndef WIN32
#define SYSPSQLRC "psqlrc"
#define PSQLRC          ".psqlrc"
#else
#define SYSPSQLRC "psqlrc"
#define PSQLRC          "psqlrc.conf"
#endif

/*
 * Structures to pass information between the option parsing routine
 * and the main function
 */
enum _actions
{
      ACT_NOTHING = 0,
      ACT_SINGLE_SLASH,
      ACT_LIST_DB,
      ACT_SINGLE_QUERY,
      ACT_FILE
};

struct adhoc_opts
{
      char     *dbname;
      char     *host;
      char     *port;
      char     *username;
      char     *logfilename;
      enum _actions action;
      char     *action_string;
      bool        no_readline;
      bool        no_psqlrc;
      bool        single_txn;
};

static void parse_psql_options(int argc, char *argv[],
                           struct adhoc_opts * options);
static void process_psqlrc(char *argv0);
static void process_psqlrc_file(char *filename);
static void showVersion(void);
static void EstablishVariableSpace(void);

/*
 *
 * main
 *
 */
int
main(int argc, char *argv[])
{
      struct adhoc_opts options;
      int               successResult;
      char     *password = NULL;
      char     *password_prompt = NULL;
      bool        new_pass;

      set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("psql"));

      if (argc > 1)
      {
            if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
            {
                  usage();
                  exit(EXIT_SUCCESS);
            }
            if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
            {
                  showVersion();
                  exit(EXIT_SUCCESS);
            }
      }

#ifdef WIN32
      setvbuf(stderr, NULL, _IONBF, 0);
#endif

      setup_cancel_handler();

      pset.progname = get_progname(argv[0]);

      pset.db = NULL;
      setDecimalLocale();
      pset.encoding = PQenv2encoding();
      pset.queryFout = stdout;
      pset.queryFoutPipe = false;
      pset.cur_cmd_source = stdin;
      pset.cur_cmd_interactive = false;

      /* We rely on unmentioned fields of pset.popt to start out 0/false/NULL */
      pset.popt.topt.format = PRINT_ALIGNED;
      pset.popt.topt.border = 1;
      pset.popt.topt.pager = 1;
      pset.popt.topt.start_table = true;
      pset.popt.topt.stop_table = true;
      pset.popt.default_footer = true;
      /* We must get COLUMNS here before readline() sets it */
      pset.popt.topt.env_columns = getenv("COLUMNS") ? atoi(getenv("COLUMNS")) : 0;

      pset.notty = (!isatty(fileno(stdin)) || !isatty(fileno(stdout)));

      pset.getPassword = TRI_DEFAULT;

      EstablishVariableSpace();

      SetVariable(pset.vars, "VERSION", PG_VERSION_STR);

      /* Default values for variables */
      SetVariableBool(pset.vars, "AUTOCOMMIT");
      SetVariable(pset.vars, "VERBOSITY", "default");
      SetVariable(pset.vars, "PROMPT1", DEFAULT_PROMPT1);
      SetVariable(pset.vars, "PROMPT2", DEFAULT_PROMPT2);
      SetVariable(pset.vars, "PROMPT3", DEFAULT_PROMPT3);

      parse_psql_options(argc, argv, &options);

      if (!pset.popt.topt.fieldSep)
            pset.popt.topt.fieldSep = pg_strdup(DEFAULT_FIELD_SEP);
      if (!pset.popt.topt.recordSep)
            pset.popt.topt.recordSep = pg_strdup(DEFAULT_RECORD_SEP);

      if (options.username == NULL)
            password_prompt = pg_strdup(_("Password: "));
      else
      {
            password_prompt = malloc(strlen(_("Password for user %s: ")) - 2 +
                                                 strlen(options.username) + 1);
            sprintf(password_prompt, _("Password for user %s: "),
                        options.username);
      }

      if (pset.getPassword == TRI_YES)
            password = simple_prompt(password_prompt, 100, false);

      /* loop until we have a password if requested by backend */
      do
      {
            new_pass = false;
            pset.db = PQsetdbLogin(options.host, options.port, NULL, NULL,
                              options.action == ACT_LIST_DB && options.dbname == NULL ?
                                             "postgres" : options.dbname,
                                             options.username, password);

            if (PQstatus(pset.db) == CONNECTION_BAD &&
                  PQconnectionNeedsPassword(pset.db) &&
                  password == NULL &&
                  pset.getPassword != TRI_NO)
            {
                  PQfinish(pset.db);
                  password = simple_prompt(password_prompt, 100, false);
                  new_pass = true;
            }
      } while (new_pass);

      free(password);
      free(password_prompt);

      if (PQstatus(pset.db) == CONNECTION_BAD)
      {
            fprintf(stderr, "%s: %s", pset.progname, PQerrorMessage(pset.db));
            PQfinish(pset.db);
            exit(EXIT_BADCONN);
      }

      PQsetNoticeProcessor(pset.db, NoticeProcessor, NULL);

      SyncVariables();

      if (options.action == ACT_LIST_DB)
      {
            int               success = listAllDbs(false);

            PQfinish(pset.db);
            exit(success ? EXIT_SUCCESS : EXIT_FAILURE);
      }

      if (options.logfilename)
      {
            pset.logfile = fopen(options.logfilename, "a");
            if (!pset.logfile)
                  fprintf(stderr, _("%s: could not open log file \"%s\": %s\n"),
                              pset.progname, options.logfilename, strerror(errno));
      }

      /*
       * Now find something to do
       */

      /*
       * process file given by -f
       */
      if (options.action == ACT_FILE && strcmp(options.action_string, "-") != 0)
      {
            if (!options.no_psqlrc)
                  process_psqlrc(argv[0]);

            successResult = process_file(options.action_string, options.single_txn);
      }

      /*
       * process slash command if one was given to -c
       */
      else if (options.action == ACT_SINGLE_SLASH)
      {
            PsqlScanState scan_state;

            if (pset.echo == PSQL_ECHO_ALL)
                  puts(options.action_string);

            scan_state = psql_scan_create();
            psql_scan_setup(scan_state,
                                    options.action_string,
                                    strlen(options.action_string));

            successResult = HandleSlashCmds(scan_state, NULL) != PSQL_CMD_ERROR
                  ? EXIT_SUCCESS : EXIT_FAILURE;

            psql_scan_destroy(scan_state);
      }

      /*
       * If the query given to -c was a normal one, send it
       */
      else if (options.action == ACT_SINGLE_QUERY)
      {
            if (pset.echo == PSQL_ECHO_ALL)
                  puts(options.action_string);

            successResult = SendQuery(options.action_string)
                  ? EXIT_SUCCESS : EXIT_FAILURE;
      }

      /*
       * or otherwise enter interactive main loop
       */
      else
      {
            if (!options.no_psqlrc)
                  process_psqlrc(argv[0]);

            connection_warnings();
            if (!pset.quiet && !pset.notty)
                  printf(_("Type \"help\" for help.\n\n"));
            if (!pset.notty)
                  initializeInput(options.no_readline ? 0 : 1);
            if (options.action_string)          /* -f - was used */
                  pset.inputfile = "<stdin>";

            successResult = MainLoop(stdin);
      }

      /* clean up */
      if (pset.logfile)
            fclose(pset.logfile);
      PQfinish(pset.db);
      setQFout(NULL);

      return successResult;
}


/*
 * Parse command line options
 */

static void
parse_psql_options(int argc, char *argv[], struct adhoc_opts * options)
{
      static struct option long_options[] =
      {
            {"echo-all", no_argument, NULL, 'a'},
            {"no-align", no_argument, NULL, 'A'},
            {"command", required_argument, NULL, 'c'},
            {"dbname", required_argument, NULL, 'd'},
            {"echo-queries", no_argument, NULL, 'e'},
            {"echo-hidden", no_argument, NULL, 'E'},
            {"file", required_argument, NULL, 'f'},
            {"field-separator", required_argument, NULL, 'F'},
            {"host", required_argument, NULL, 'h'},
            {"html", no_argument, NULL, 'H'},
            {"list", no_argument, NULL, 'l'},
            {"log-file", required_argument, NULL, 'L'},
            {"no-readline", no_argument, NULL, 'n'},
            {"single-transaction", no_argument, NULL, '1'},
            {"output", required_argument, NULL, 'o'},
            {"port", required_argument, NULL, 'p'},
            {"pset", required_argument, NULL, 'P'},
            {"quiet", no_argument, NULL, 'q'},
            {"record-separator", required_argument, NULL, 'R'},
            {"single-step", no_argument, NULL, 's'},
            {"single-line", no_argument, NULL, 'S'},
            {"tuples-only", no_argument, NULL, 't'},
            {"table-attr", required_argument, NULL, 'T'},
            {"username", required_argument, NULL, 'U'},
            {"set", required_argument, NULL, 'v'},
            {"variable", required_argument, NULL, 'v'},
            {"version", no_argument, NULL, 'V'},
            {"no-password", no_argument, NULL, 'w'},
            {"password", no_argument, NULL, 'W'},
            {"expanded", no_argument, NULL, 'x'},
            {"no-psqlrc", no_argument, NULL, 'X'},
            {"help", no_argument, NULL, '?'},
            {NULL, 0, NULL, 0}
      };

      int               optindex;
      extern char *optarg;
      extern int  optind;
      int               c;

      memset(options, 0, sizeof *options);

      while ((c = getopt_long(argc, argv, "aAc:d:eEf:F:h:HlL:no:p:P:qR:sStT:U:v:VwWxX?1",
                                          long_options, &optindex)) != -1)
      {
            switch (c)
            {
                  case 'a':
                        SetVariable(pset.vars, "ECHO", "all");
                        break;
                  case 'A':
                        pset.popt.topt.format = PRINT_UNALIGNED;
                        break;
                  case 'c':
                        options->action_string = optarg;
                        if (optarg[0] == '\\')
                        {
                              options->action = ACT_SINGLE_SLASH;
                              options->action_string++;
                        }
                        else
                              options->action = ACT_SINGLE_QUERY;
                        break;
                  case 'd':
                        options->dbname = optarg;
                        break;
                  case 'e':
                        SetVariable(pset.vars, "ECHO", "queries");
                        break;
                  case 'E':
                        SetVariableBool(pset.vars, "ECHO_HIDDEN");
                        break;
                  case 'f':
                        options->action = ACT_FILE;
                        options->action_string = optarg;
                        break;
                  case 'F':
                        pset.popt.topt.fieldSep = pg_strdup(optarg);
                        break;
                  case 'h':
                        options->host = optarg;
                        break;
                  case 'H':
                        pset.popt.topt.format = PRINT_HTML;
                        break;
                  case 'l':
                        options->action = ACT_LIST_DB;
                        break;
                  case 'L':
                        options->logfilename = optarg;
                        break;
                  case 'n':
                        options->no_readline = true;
                        break;
                  case 'o':
                        setQFout(optarg);
                        break;
                  case 'p':
                        options->port = optarg;
                        break;
                  case 'P':
                        {
                              char     *value;
                              char     *equal_loc;
                              bool        result;

                              value = pg_strdup(optarg);
                              equal_loc = strchr(value, '=');
                              if (!equal_loc)
                                    result = do_pset(value, NULL, &pset.popt, true);
                              else
                              {
                                    *equal_loc = '\0';
                                    result = do_pset(value, equal_loc + 1, &pset.popt, true);
                              }

                              if (!result)
                              {
                                    fprintf(stderr, _("%s: could not set printing parameter \"%s\"\n"), pset.progname, value);
                                    exit(EXIT_FAILURE);
                              }

                              free(value);
                              break;
                        }
                  case 'q':
                        SetVariableBool(pset.vars, "QUIET");
                        break;
                  case 'R':
                        pset.popt.topt.recordSep = pg_strdup(optarg);
                        break;
                  case 's':
                        SetVariableBool(pset.vars, "SINGLESTEP");
                        break;
                  case 'S':
                        SetVariableBool(pset.vars, "SINGLELINE");
                        break;
                  case 't':
                        pset.popt.topt.tuples_only = true;
                        break;
                  case 'T':
                        pset.popt.topt.tableAttr = pg_strdup(optarg);
                        break;
                  case 'U':
                        options->username = optarg;
                        break;
                  case 'v':
                        {
                              char     *value;
                              char     *equal_loc;

                              value = pg_strdup(optarg);
                              equal_loc = strchr(value, '=');
                              if (!equal_loc)
                              {
                                    if (!DeleteVariable(pset.vars, value))
                                    {
                                          fprintf(stderr, _("%s: could not delete variable \"%s\"\n"),
                                                      pset.progname, value);
                                          exit(EXIT_FAILURE);
                                    }
                              }
                              else
                              {
                                    *equal_loc = '\0';
                                    if (!SetVariable(pset.vars, value, equal_loc + 1))
                                    {
                                          fprintf(stderr, _("%s: could not set variable \"%s\"\n"),
                                                      pset.progname, value);
                                          exit(EXIT_FAILURE);
                                    }
                              }

                              free(value);
                              break;
                        }
                  case 'V':
                        showVersion();
                        exit(EXIT_SUCCESS);
                  case 'w':
                        pset.getPassword = TRI_NO;
                        break;
                  case 'W':
                        pset.getPassword = TRI_YES;
                        break;
                  case 'x':
                        pset.popt.topt.expanded = true;
                        break;
                  case 'X':
                        options->no_psqlrc = true;
                        break;
                  case '1':
                        options->single_txn = true;
                        break;
                  case '?':
                        /* Actual help option given */
                        if (strcmp(argv[optind - 1], "-?") == 0 || strcmp(argv[optind - 1], "--help") == 0)
                        {
                              usage();
                              exit(EXIT_SUCCESS);
                        }
                        /* unknown option reported by getopt */
                        else
                        {
                              fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
                                          pset.progname);
                              exit(EXIT_FAILURE);
                        }
                        break;
                  default:
                        fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
                                    pset.progname);
                        exit(EXIT_FAILURE);
                        break;
            }
      }

      /*
       * if we still have arguments, use it as the database name and username
       */
      while (argc - optind >= 1)
      {
            if (!options->dbname)
                  options->dbname = argv[optind];
            else if (!options->username)
                  options->username = argv[optind];
            else if (!pset.quiet)
                  fprintf(stderr, _("%s: warning: extra command-line argument \"%s\" ignored\n"),
                              pset.progname, argv[optind]);

            optind++;
      }
}


/*
 * Load .psqlrc file, if found.
 */
static void
process_psqlrc(char *argv0)
{
      char        home[MAXPGPATH];
      char        rc_file[MAXPGPATH];
      char        my_exec_path[MAXPGPATH];
      char        etc_path[MAXPGPATH];

      find_my_exec(argv0, my_exec_path);
      get_etc_path(my_exec_path, etc_path);

      snprintf(rc_file, MAXPGPATH, "%s/%s", etc_path, SYSPSQLRC);
      process_psqlrc_file(rc_file);

      if (get_home_path(home))
      {
            snprintf(rc_file, MAXPGPATH, "%s/%s", home, PSQLRC);
            process_psqlrc_file(rc_file);
      }
}



static void
process_psqlrc_file(char *filename)
{
      char     *psqlrc;

#if defined(WIN32) && (!defined(__MINGW32__))
#define R_OK 4
#endif

      psqlrc = pg_malloc(strlen(filename) + 1 + strlen(PG_VERSION) + 1);
      sprintf(psqlrc, "%s-%s", filename, PG_VERSION);

      if (access(psqlrc, R_OK) == 0)
            (void) process_file(psqlrc, false);
      else if (access(filename, R_OK) == 0)
            (void) process_file(filename, false);
      free(psqlrc);
}



/* showVersion
 *
 * This output format is intended to match GNU standards.
 */
static void
showVersion(void)
{
      puts("psql (PostgreSQL) " PG_VERSION);

#if defined(USE_READLINE)
      puts(_("contains support for command-line editing"));
#endif
}



/*
 * Assign hooks for psql variables.
 *
 * This isn't an amazingly good place for them, but neither is anywhere else.
 */

static void
autocommit_hook(const char *newval)
{
      pset.autocommit = ParseVariableBool(newval);
}

static void
on_error_stop_hook(const char *newval)
{
      pset.on_error_stop = ParseVariableBool(newval);
}

static void
quiet_hook(const char *newval)
{
      pset.quiet = ParseVariableBool(newval);
}

static void
singleline_hook(const char *newval)
{
      pset.singleline = ParseVariableBool(newval);
}

static void
singlestep_hook(const char *newval)
{
      pset.singlestep = ParseVariableBool(newval);
}

static void
fetch_count_hook(const char *newval)
{
      pset.fetch_count = ParseVariableNum(newval, -1, -1, false);
}

static void
echo_hook(const char *newval)
{
      if (newval == NULL)
            pset.echo = PSQL_ECHO_NONE;
      else if (strcmp(newval, "queries") == 0)
            pset.echo = PSQL_ECHO_QUERIES;
      else if (strcmp(newval, "all") == 0)
            pset.echo = PSQL_ECHO_ALL;
      else
            pset.echo = PSQL_ECHO_NONE;
}

static void
echo_hidden_hook(const char *newval)
{
      if (newval == NULL)
            pset.echo_hidden = PSQL_ECHO_HIDDEN_OFF;
      else if (strcmp(newval, "noexec") == 0)
            pset.echo_hidden = PSQL_ECHO_HIDDEN_NOEXEC;
      else if (pg_strcasecmp(newval, "off") == 0)
            pset.echo_hidden = PSQL_ECHO_HIDDEN_OFF;
      else
            pset.echo_hidden = PSQL_ECHO_HIDDEN_ON;
}

static void
on_error_rollback_hook(const char *newval)
{
      if (newval == NULL)
            pset.on_error_rollback = PSQL_ERROR_ROLLBACK_OFF;
      else if (pg_strcasecmp(newval, "interactive") == 0)
            pset.on_error_rollback = PSQL_ERROR_ROLLBACK_INTERACTIVE;
      else if (pg_strcasecmp(newval, "off") == 0)
            pset.on_error_rollback = PSQL_ERROR_ROLLBACK_OFF;
      else
            pset.on_error_rollback = PSQL_ERROR_ROLLBACK_ON;
}

static void
histcontrol_hook(const char *newval)
{
      if (newval == NULL)
            pset.histcontrol = hctl_none;
      else if (strcmp(newval, "ignorespace") == 0)
            pset.histcontrol = hctl_ignorespace;
      else if (strcmp(newval, "ignoredups") == 0)
            pset.histcontrol = hctl_ignoredups;
      else if (strcmp(newval, "ignoreboth") == 0)
            pset.histcontrol = hctl_ignoreboth;
      else
            pset.histcontrol = hctl_none;
}

static void
prompt1_hook(const char *newval)
{
      pset.prompt1 = newval ? newval : "";
}

static void
prompt2_hook(const char *newval)
{
      pset.prompt2 = newval ? newval : "";
}

static void
prompt3_hook(const char *newval)
{
      pset.prompt3 = newval ? newval : "";
}

static void
verbosity_hook(const char *newval)
{
      if (newval == NULL)
            pset.verbosity = PQERRORS_DEFAULT;
      else if (strcmp(newval, "default") == 0)
            pset.verbosity = PQERRORS_DEFAULT;
      else if (strcmp(newval, "terse") == 0)
            pset.verbosity = PQERRORS_TERSE;
      else if (strcmp(newval, "verbose") == 0)
            pset.verbosity = PQERRORS_VERBOSE;
      else
            pset.verbosity = PQERRORS_DEFAULT;

      if (pset.db)
            PQsetErrorVerbosity(pset.db, pset.verbosity);
}


static void
EstablishVariableSpace(void)
{
      pset.vars = CreateVariableSpace();

      SetVariableAssignHook(pset.vars, "AUTOCOMMIT", autocommit_hook);
      SetVariableAssignHook(pset.vars, "ON_ERROR_STOP", on_error_stop_hook);
      SetVariableAssignHook(pset.vars, "QUIET", quiet_hook);
      SetVariableAssignHook(pset.vars, "SINGLELINE", singleline_hook);
      SetVariableAssignHook(pset.vars, "SINGLESTEP", singlestep_hook);
      SetVariableAssignHook(pset.vars, "FETCH_COUNT", fetch_count_hook);
      SetVariableAssignHook(pset.vars, "ECHO", echo_hook);
      SetVariableAssignHook(pset.vars, "ECHO_HIDDEN", echo_hidden_hook);
      SetVariableAssignHook(pset.vars, "ON_ERROR_ROLLBACK", on_error_rollback_hook);
      SetVariableAssignHook(pset.vars, "HISTCONTROL", histcontrol_hook);
      SetVariableAssignHook(pset.vars, "PROMPT1", prompt1_hook);
      SetVariableAssignHook(pset.vars, "PROMPT2", prompt2_hook);
      SetVariableAssignHook(pset.vars, "PROMPT3", prompt3_hook);
      SetVariableAssignHook(pset.vars, "VERBOSITY", verbosity_hook);
}

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