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/*-------------------------------------------------------------------------
*
* psql.c--
* an interactive front-end to postgreSQL
*
* Copyright (c) 1996, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/bin/psql/Attic/psql.c,v 1.70 1997/06/03 06:17:34 vadim Exp $
*
*-------------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/param.h> /* for MAXPATHLEN */
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include "postgres.h"
#include "libpq-fe.h"
#include "pqsignal.h"
#include "stringutils.h"
#include "psqlHelp.h"
#ifndef HAVE_STRDUP
#include "strdup.h"
#endif
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#ifdef HAVE_LIBREADLINE
# ifdef HAVE_READLINE_H
# include <readline.h>
# if defined(HAVE_HISTORY) || defined(HAVE_LIBHISTORY)
# include <history.h>
# endif
# else
# include <readline/readline.h>
# if defined(HAVE_HISTORY) || defined(HAVE_LIBHISTORY)
# include <readline/history.h>
# endif
# endif
#endif
#define PROMPT "=> "
#define MAX_QUERY_BUFFER 20000
#define COPYBUFSIZ 8192
#define DEFAULT_FIELD_SEP "|"
#define DEFAULT_EDITOR "vi"
#define DEFAULT_SHELL "/bin/sh"
typedef struct _psqlSettings {
PGconn *db; /* connection to backend */
FILE *queryFout; /* where to send the query results */
PQprintOpt opt; /* options to be passed to PQprint */
char *prompt; /* prompt to display */
char *gfname; /* one-shot file output argument for \g */
bool notty; /* input or output is not a tty */
bool pipe; /* queryFout is from a popen() */
bool echoQuery; /* echo the query before sending it */
bool quiet; /* run quietly, no messages, no promt */
bool singleStep; /* prompt before for each query */
bool singleLineMode; /* query terminated by newline */
bool useReadline;/* use libreadline routines */
bool getPassword;/* prompt the user for a username and password */
} PsqlSettings;
/* declarations for functions in this file */
static void usage(char *progname);
static void slashUsage();
static void handleCopyOut(PGresult * res, bool quiet, FILE * copystream);
static void
handleCopyIn(PGresult * res, const bool mustprompt,
FILE * copystream);
static int tableList(PsqlSettings * ps, bool deep_tablelist, char table_index_both);
static int tableDesc(PsqlSettings * ps, char *table);
static int rightsList(PsqlSettings * ps);
static void prompt_for_password(char *username, char *password);
static char * make_connect_string(char *host, char *port, char *dbname,
char *username, char *password);
char *gets_noreadline(char *prompt, FILE * source);
char *gets_readline(char *prompt, FILE * source);
char *gets_fromFile(char *prompt, FILE * source);
int listAllDbs(PsqlSettings * settings);
void
SendQuery(bool * success_p, PsqlSettings * settings, const char *query,
const bool copy_in, const bool copy_out, FILE * copystream);
int
HandleSlashCmds(PsqlSettings * settings,
char *line,
char *query);
int MainLoop(PsqlSettings * settings, FILE * source);
/* probably should move this into libpq */
void
PQprint(FILE * fp,
PGresult * res,
PQprintOpt * po
);
FILE *setFout(PsqlSettings * ps, char *fname);
/*
* usage print out usage for command line arguments
*/
static void
usage(char *progname)
{
fprintf(stderr, "Usage: %s [options] [dbname]\n", progname);
fprintf(stderr, "\t -a authsvc set authentication service\n");
fprintf(stderr, "\t -A turn off alignment when printing out attributes\n");
fprintf(stderr, "\t -c query run single query (slash commands too)\n");
fprintf(stderr, "\t -d dbName specify database name\n");
fprintf(stderr, "\t -e echo the query sent to the backend\n");
fprintf(stderr, "\t -f filename use file as a source of queries\n");
fprintf(stderr, "\t -F sep set the field separator (default is " ")\n");
fprintf(stderr, "\t -h host set database server host\n");
fprintf(stderr, "\t -H turn on html3.0 table output\n");
fprintf(stderr, "\t -l list available databases\n");
fprintf(stderr, "\t -n don't use readline library\n");
fprintf(stderr, "\t -o filename send output to filename or (|pipe)\n");
fprintf(stderr, "\t -p port set port number\n");
fprintf(stderr, "\t -q run quietly (no messages, no prompts)\n");
fprintf(stderr, "\t -s single step mode (prompts for each query)\n");
fprintf(stderr, "\t -S single line mode (i.e. query terminated by newline)\n");
fprintf(stderr, "\t -t turn off printing of headings and row count\n");
fprintf(stderr, "\t -u ask for a username and password for authentication\n");
fprintf(stderr, "\t -T html set html3.0 table command options (cf. -H)\n");
fprintf(stderr, "\t -x turn on expanded output (field names on left)\n");
exit(1);
}
/*
* slashUsage print out usage for the backslash commands
*/
static char *
on(bool f)
{
return f ? "on" : "off";
}
static void
slashUsage(PsqlSettings * ps)
{
fprintf(stderr, " \\? -- help\n");
fprintf(stderr, " \\a -- toggle field-alignment (currenty %s)\n", on(ps->opt.align));
fprintf(stderr, " \\C [<captn>] -- set html3 caption (currently '%s')\n", ps->opt.caption ? ps->opt.caption : "");
fprintf(stderr, " \\connect <dbname> <user> -- connect to new database (currently '%s')\n", PQdb(ps->db));
fprintf(stderr, " \\copy table {from | to} <fname>\n");
fprintf(stderr, " \\d [<table>] -- list tables and indicies in database or columns in <table>, * for all\n");
fprintf(stderr, " \\di -- list only indicies in database\n");
fprintf(stderr, " \\dt -- list only tables in database\n");
fprintf(stderr, " \\e [<fname>] -- edit the current query buffer or <fname>, \\E execute too\n");
fprintf(stderr, " \\f [<sep>] -- change field separater (currently '%s')\n", ps->opt.fieldSep);
fprintf(stderr, " \\g [<fname>] [|<cmd>] -- send query to backend [and results in <fname> or pipe]\n");
fprintf(stderr, " \\h [<cmd>] -- help on syntax of sql commands, * for all commands\n");
fprintf(stderr, " \\H -- toggle html3 output (currently %s)\n", on(ps->opt.html3));
fprintf(stderr, " \\i <fname> -- read and execute queries from filename\n");
fprintf(stderr, " \\l -- list all databases\n");
fprintf(stderr, " \\m -- toggle monitor-like table display (currently %s)\n", on(ps->opt.standard));
fprintf(stderr, " \\o [<fname>] [|<cmd>] -- send all query results to stdout, <fname>, or pipe\n");
fprintf(stderr, " \\p -- print the current query buffer\n");
fprintf(stderr, " \\q -- quit\n");
fprintf(stderr, " \\r -- reset(clear) the query buffer\n");
fprintf(stderr, " \\s [<fname>] -- print history or save it in <fname>\n");
fprintf(stderr, " \\t -- toggle table headings and row count (currently %s)\n", on(ps->opt.header));
fprintf(stderr, " \\T [<html>] -- set html3.0 <table ...> options (currently '%s')\n", ps->opt.tableOpt ? ps->opt.tableOpt : "");
fprintf(stderr, " \\x -- toggle expanded output (currently %s)\n", on(ps->opt.expanded));
fprintf(stderr, " \\z -- list current grant/revoke permissions\n");
fprintf(stderr, " \\! [<cmd>] -- shell escape or command\n");
}
static PGresult *
PSQLexec(PsqlSettings * ps, char *query)
{
PGresult *res = PQexec(ps->db, query);
if (!res)
fputs(PQerrorMessage(ps->db), stderr);
else {
if (PQresultStatus(res) == PGRES_COMMAND_OK ||
PQresultStatus(res) == PGRES_TUPLES_OK)
return res;
if (!ps->quiet)
fputs(PQerrorMessage(ps->db), stderr);
PQclear(res);
}
return NULL;
}
/*
* listAllDbs
*
* list all the databases in the system returns 0 if all went well
*
*
*/
int
listAllDbs(PsqlSettings * ps)
{
PGresult *results;
char *query = "select * from pg_database;";
if (!(results = PSQLexec(ps, query)))
return 1;
else {
PQprint(ps->queryFout,
results,
&ps->opt);
PQclear(results);
return 0;
}
}
/*
* List The Database Tables returns 0 if all went well
*
*/
int
tableList(PsqlSettings * ps, bool deep_tablelist, char table_index_both)
{
char listbuf[256];
int nColumns;
int i;
char *rk;
char *rr;
PGresult *res;
listbuf[0] = '\0';
strcat(listbuf, "SELECT usename, relname, relkind, relhasrules");
strcat(listbuf, " FROM pg_class, pg_user ");
switch (table_index_both) {
case 't': strcat(listbuf, "WHERE ( relkind = 'r') ");
break;
case 'i': strcat(listbuf, "WHERE ( relkind = 'i') ");
break;
case 'b':
default: strcat(listbuf, "WHERE ( relkind = 'r' OR relkind = 'i') ");
break;
}
strcat(listbuf, " and relname !~ '^pg_'");
strcat(listbuf, " and relname !~ '^Inv[0-9]+'");
/*
* the usesysid = relowner won't work on stock 1.0 dbs, need to add in
* the int4oideq function
*/
strcat(listbuf, " and usesysid = relowner");
strcat(listbuf, " ORDER BY relname ");
if (!(res = PSQLexec(ps, listbuf)))
return -1;
/* first, print out the attribute names */
nColumns = PQntuples(res);
if (nColumns > 0) {
if (deep_tablelist) {
/* describe everything here */
char **table;
table = (char **) malloc(nColumns * sizeof(char *));
if (table == NULL)
perror("malloc");
/* load table table */
for (i = 0; i < nColumns; i++) {
table[i] = (char *) malloc(PQgetlength(res, i, 1) * sizeof(char) + 1);
if (table[i] == NULL)
perror("malloc");
strcpy(table[i], PQgetvalue(res, i, 1));
}
PQclear(res);
for (i = 0; i < nColumns; i++) {
tableDesc(ps, table[i]);
}
free(table);
} else {
/* Display the information */
printf("\nDatabase = %s\n", PQdb(ps->db));
printf(" +------------------+----------------------------------+----------+\n");
printf(" | Owner | Relation | Type |\n");
printf(" +------------------+----------------------------------+----------+\n");
/* next, print out the instances */
for (i = 0; i < PQntuples(res); i++) {
printf(" | %-16.16s", PQgetvalue(res, i, 0));
printf(" | %-32.32s | ", PQgetvalue(res, i, 1));
rk = PQgetvalue(res, i, 2);
rr = PQgetvalue(res, i, 3);
if (strcmp(rk, "r") == 0)
printf("%-8.8s |", (rr[0] == 't') ? "view?" : "table");
else
printf("%-8.8s |", "index");
printf("\n");
}
printf(" +------------------+----------------------------------+----------+\n");
PQclear(res);
}
return (0);
} else {
switch (table_index_both) {
case 't': fprintf(stderr, "Couldn't find any tables!\n");
break;
case 'i': fprintf(stderr, "Couldn't find any indicies!\n");
break;
case 'b':
default: fprintf(stderr, "Couldn't find any tables or indicies!\n");
break;
}
return (-1);
}
}
/*
* List Tables Grant/Revoke Permissions returns 0 if all went well
*
*/
int
rightsList(PsqlSettings * ps)
{
char listbuf[256];
int nColumns;
int i;
PGresult *res;
listbuf[0] = '\0';
strcat(listbuf, "SELECT relname, relacl");
strcat(listbuf, " FROM pg_class, pg_user ");
strcat(listbuf, "WHERE ( relkind = 'r' OR relkind = 'i') ");
strcat(listbuf, " and relname !~ '^pg_'");
strcat(listbuf, " and relname !~ '^Inv[0-9]+'");
strcat(listbuf, " and usesysid = relowner");
strcat(listbuf, " ORDER BY relname ");
if (!(res = PSQLexec(ps, listbuf)))
return -1;
nColumns = PQntuples(res);
if(nColumns > 0) {
/* Display the information */
printf("\nDatabase = %s\n", PQdb(ps->db));
printf(" +------------------+----------------------------------------------------+\n");
printf(" | Relation | Grant/Revoke Permissions |\n");
printf(" +------------------+----------------------------------------------------+\n");
/* next, print out the instances */
for (i = 0; i < PQntuples(res); i++) {
printf(" | %-16.16s", PQgetvalue(res, i, 0));
printf(" | %-50.50s | ", PQgetvalue(res, i, 1));
printf("\n");
}
printf(" +------------------+----------------------------------------------------+\n");
PQclear(res);
return (0);
} else {
fprintf(stderr, "Couldn't find any tables!\n");
return (-1);
}
}
/*
* Describe a table
*
* Describe the columns in a database table. returns 0 if all went well
*
*
*/
int
tableDesc(PsqlSettings * ps, char *table)
{
char descbuf[256];
int nColumns;
char *rtype;
int i;
int rsize;
PGresult *res;
/* Build the query */
descbuf[0] = '\0';
strcat(descbuf, "SELECT a.attnum, a.attname, t.typname, a.attlen");
strcat(descbuf, " FROM pg_class c, pg_attribute a, pg_type t ");
strcat(descbuf, " WHERE c.relname = '");
strcat(descbuf, table);
strcat(descbuf, "'");
strcat(descbuf, " and a.attnum > 0 ");
strcat(descbuf, " and a.attrelid = c.oid ");
strcat(descbuf, " and a.atttypid = t.oid ");
strcat(descbuf, " ORDER BY attnum ");
if (!(res = PSQLexec(ps, descbuf)))
return -1;
/* first, print out the attribute names */
nColumns = PQntuples(res);
if (nColumns > 0) {
/*
* * Display the information
*/
printf("\nTable = %s\n", table);
printf("+----------------------------------+----------------------------------+-------+\n");
printf("| Field | Type | Length|\n");
printf("+----------------------------------+----------------------------------+-------+\n");
/* next, print out the instances */
for (i = 0; i < PQntuples(res); i++) {
printf("| %-32.32s | ", PQgetvalue(res, i, 1));
rtype = PQgetvalue(res, i, 2);
rsize = atoi(PQgetvalue(res, i, 3));
if (strcmp(rtype, "text") == 0) {
printf("%-32.32s |", rtype);
printf("%6s |", "var");
} else if (strcmp(rtype, "bpchar") == 0) {
printf("%-32.32s |", "(bp)char");
printf("%6i |", rsize > 0 ? rsize - 4 : 0);
} else if (strcmp(rtype, "varchar") == 0) {
printf("%-32.32s |", rtype);
printf("%6i |", rsize > 0 ? rsize - 4 : 0);
} else {
/* array types start with an underscore */
if (rtype[0] != '_')
printf("%-32.32s |", rtype);
else {
char *newname;
newname = malloc(strlen(rtype) + 2);
strcpy(newname, rtype + 1);
strcat(newname, "[]");
printf("%-32.32s |", newname);
free(newname);
}
if (rsize > 0)
printf("%6i |", rsize);
else
printf("%6s |", "var");
}
printf("\n");
}
printf("+----------------------------------+----------------------------------+-------+\n");
PQclear(res);
return (0);
} else {
fprintf(stderr, "Couldn't find table %s!\n", table);
return (-1);
}
}
typedef char *(*READ_ROUTINE) (char *prompt, FILE * source);
/*
* gets_noreadline prompt source gets a line of input without calling
* readline, the source is ignored
*/
char *
gets_noreadline(char *prompt, FILE * source)
{
fputs(prompt, stdout);
fflush(stdout);
return (gets_fromFile(prompt, stdin));
}
/*
* gets_readline prompt source the routine to get input from GNU readline(),
* the source is ignored the prompt argument is used as the prompting string
*/
char *
gets_readline(char *prompt, FILE * source)
{
char *s;
#ifdef HAVE_LIBREADLINE
s = readline(prompt);
#else
char buf[500];
printf("%s", prompt);
s = fgets(buf, 500, stdin);
#endif
fputc('\r', stdout);
fflush(stdout);
return s;
}
/*
* gets_fromFile prompt source
*
* the routine to read from a file, the prompt argument is ignored the source
* argument is a FILE *
*/
char *
gets_fromFile(char *prompt, FILE * source)
{
char *line;
int len;
line = malloc(MAX_QUERY_BUFFER + 1);
/* read up to MAX_QUERY_BUFFER characters */
if (fgets(line, MAX_QUERY_BUFFER, source) == NULL)
return NULL;
line[MAX_QUERY_BUFFER - 1] = '\0';
len = strlen(line);
if (len == MAX_QUERY_BUFFER) {
fprintf(stderr, "line read exceeds maximum length. Truncating at %d\n",
MAX_QUERY_BUFFER);
}
return line;
}
/*
* SendQuery: send the query string to the backend return *success_p = 1 if
* the query executed successfully returns *success_p = 0 otherwise
*/
void
SendQuery(bool * success_p, PsqlSettings * settings, const char *query,
const bool copy_in, const bool copy_out, FILE * copystream)
{
PGresult *results;
PGnotify *notify;
if (settings->singleStep)
fprintf(stdout, "\n**************************************"
"*****************************************\n");
if (settings->echoQuery || settings->singleStep) {
fprintf(stderr, "QUERY: %s\n", query);
fflush(stderr);
}
if (settings->singleStep) {
fprintf(stdout, "\n**************************************"
"*****************************************\n");
fflush(stdout);
printf("\npress return to continue ..\n");
gets_fromFile("", stdin);
}
results = PQexec(settings->db, query);
if (results == NULL) {
fprintf(stderr, "%s", PQerrorMessage(settings->db));
*success_p = false;
} else {
switch (PQresultStatus(results)) {
case PGRES_TUPLES_OK:
if (settings->gfname) {
PsqlSettings ps = *settings;
FILE *fp;
ps.queryFout = stdout;
fp = setFout(&ps, settings->gfname);
if (!fp || fp == stdout) {
*success_p = false;
break;
} else
*success_p = true;
PQprint(fp,
results,
&(settings->opt));
if (ps.pipe)
pclose(fp);
else
fclose(fp);
free(settings->gfname);
settings->gfname = NULL;
break;
} else {
*success_p = true;
PQprint(settings->queryFout,
results,
&(settings->opt));
fflush(settings->queryFout);
}
PQclear(results);
break;
case PGRES_EMPTY_QUERY:
*success_p = true;
PQclear(results);
break;
case PGRES_COMMAND_OK:
*success_p = true;
if (!settings->quiet)
fprintf(stdout, "%s\n", PQcmdStatus(results));
PQclear(results);
break;
case PGRES_COPY_OUT:
*success_p = true;
if (copy_out) {
handleCopyOut(results, settings->quiet, copystream);
} else {
if (!settings->quiet)
fprintf(stdout, "Copy command returns...\n");
handleCopyOut(results, settings->quiet, stdout);
}
PQclear(results);
break;
case PGRES_COPY_IN:
*success_p = true;
if (copy_in)
handleCopyIn(results, false, copystream);
else
handleCopyIn(results, !settings->quiet, stdin);
PQclear(results);
break;
case PGRES_NONFATAL_ERROR:
case PGRES_FATAL_ERROR:
case PGRES_BAD_RESPONSE:
*success_p = false;
fprintf(stderr, "%s", PQerrorMessage(settings->db));
break;
}
if (PQstatus(settings->db) == CONNECTION_BAD) {
fprintf(stderr,
"We have lost the connection to the backend, so "
"further processing is impossible. "
"Terminating.\n");
exit(2); /* we are out'ta here */
}
/* check for asynchronous returns */
notify = PQnotifies(settings->db);
if (notify) {
fprintf(stderr,
"ASYNC NOTIFY of '%s' from backend pid '%d' received\n",
notify->relname, notify->be_pid);
free(notify);
}
}
}
static void
editFile(char *fname)
{
char *editorName;
char *sys;
editorName = getenv("EDITOR");
if (!editorName)
editorName = DEFAULT_EDITOR;
sys = malloc(strlen(editorName) + strlen(fname) + 32 + 1);
if (!sys) {
perror("malloc");
exit(1);
}
sprintf(sys, "exec '%s' '%s'", editorName, fname);
system(sys);
free(sys);
}
static bool
toggle(PsqlSettings * settings, bool * sw, char *msg)
{
*sw = !*sw;
if (!settings->quiet)
fprintf(stderr, "turned %s %s\n", on(*sw), msg);
return *sw;
}
static void
unescape(char *dest, const char *source)
{
/*-----------------------------------------------------------------------------
Return as the string <dest> the value of string <source> with escape
sequences turned into the bytes they represent.
-----------------------------------------------------------------------------*/
char *p;
bool esc; /* Last character we saw was the escape
* character (/) */
esc = false; /* Haven't seen escape character yet */
for (p = (char *) source; *p; p++) {
char c; /* Our output character */
if (esc) {
switch (*p) {
case 'n':
c = '\n';
break;
case 'r':
c = '\r';
break;
case 't':
c = '\t';
break;
case 'f':
c = '\f';
break;
case '\\':
c = '\\';
break;
default:
c = *p;
}
esc = false;
} else if (*p == '\\') {
esc = true;
c = ' '; /* meaningless, but compiler doesn't know
* that */
} else {
c = *p;
esc = false;
}
if (!esc)
*dest++ = c;
}
*dest = '\0'; /* Terminating null character */
}
static void
parse_slash_copy(const char *args, char *table, const int table_len,
char *file, const int file_len,
bool * from_p, bool * error_p)
{
char work_args[200];
/*
* A copy of the \copy command arguments, except that we modify it as we
* parse to suit our parsing needs.
*/
char *table_tok, *fromto_tok;
strncpy(work_args, args, sizeof(work_args));
work_args[sizeof(work_args) - 1] = '\0';
*error_p = false; /* initial assumption */
table_tok = strtok(work_args, " ");
if (table_tok == NULL) {
fprintf(stderr, "\\copy needs arguments.\n");
*error_p = true;
} else {
strncpy(table, table_tok, table_len);
file[table_len - 1] = '\0';
fromto_tok = strtok(NULL, " ");
if (fromto_tok == NULL) {
fprintf(stderr, "'FROM' or 'TO' must follow table name.\n");
*error_p = true;
} else {
if (strcasecmp(fromto_tok, "from") == 0)
*from_p = true;
else if (strcasecmp(fromto_tok, "to") == 0)
*from_p = false;
else {
fprintf(stderr,
"Unrecognized token found where "
"'FROM' or 'TO' expected: '%s'.\n",
fromto_tok);
*error_p = true;
}
if (!*error_p) {
char *file_tok;
file_tok = strtok(NULL, " ");
if (file_tok == NULL) {
fprintf(stderr, "A file pathname must follow '%s'.\n",
fromto_tok);
*error_p = true;
} else {
strncpy(file, file_tok, file_len);
file[file_len - 1] = '\0';
if (strtok(NULL, " ") != NULL) {
fprintf(stderr,
"You have extra tokens after the filename.\n");
*error_p = true;
}
}
}
}
}
}
static void
do_copy(const char *args, PsqlSettings * settings)
{
/*---------------------------------------------------------------------------
Execute a \copy command (frontend copy). We have to open a file, then
submit a COPY query to the backend and either feed it data from the
file or route its response into the file.
We do a text copy with default (tab) column delimiters. Some day, we
should do all the things a backend copy can do.
----------------------------------------------------------------------------*/
char query[200];
/* The COPY command we send to the back end */
bool from;
/* The direction of the copy is from a file to a table. */
char file[MAXPATHLEN + 1];
/* The pathname of the file from/to which we copy */
char table[NAMEDATALEN + 1];
/* The name of the table from/to which we copy */
bool syntax_error;
/* The \c command has invalid syntax */
FILE *copystream;
parse_slash_copy(args, table, sizeof(table), file, sizeof(file),
&from, &syntax_error);
if (!syntax_error) {
strcpy(query, "COPY ");
strcat(query, table);
if (from)
strcat(query, " FROM stdin");
else
strcat(query, " TO stdout");
if (from) {
copystream = fopen(file, "r");
} else {
copystream = fopen(file, "w");
}
if (copystream == NULL)
fprintf(stderr,
"Unable to open file %s which to copy, errno = %s (%d).",
from ? "from" : "to", strerror(errno), errno);
else {
bool success; /* The query succeeded at the backend */
SendQuery(&success, settings, query, from, !from, copystream);
fclose(copystream);
if (!settings->quiet) {
if (success)
fprintf(stdout, "Successfully copied.\n");
else
fprintf(stdout, "Copy failed.\n");
}
}
}
}
static void
do_connect(const char *new_dbname,
const char *new_user,
PsqlSettings * settings)
{
char *dbname = PQdb(settings->db);
if (!new_dbname)
fprintf(stderr, "\\connect must be followed by a database name\n");
else {
PGconn *olddb = settings->db;
static char *userenv = NULL;
char *old_userenv = NULL;
printf("closing connection to database: %s\n", dbname);
if (new_user != NULL) {
/*
PQsetdb() does not allow us to specify the user,
so we have to do it via PGUSER
*/
if (userenv != NULL)
old_userenv = userenv;
userenv = malloc(strlen("PGUSER=") + strlen(new_user) + 1);
sprintf(userenv,"PGUSER=%s",new_user);
/* putenv() may continue to use memory as part of environment */
putenv(userenv);
/* can delete old memory if we malloc'ed it */
if (old_userenv != NULL)
free(old_userenv);
}
settings->db = PQsetdb(PQhost(olddb), PQport(olddb),
NULL, NULL, new_dbname);
if (!new_user)
printf("connecting to new database: %s\n", new_dbname);
else
printf("connecting to new database: %s as user: %s\n",
new_dbname,new_user);
if (PQstatus(settings->db) == CONNECTION_BAD) {
fprintf(stderr, "%s\n", PQerrorMessage(settings->db));
printf("reconnecting to %s\n", dbname);
settings->db = PQsetdb(PQhost(olddb), PQport(olddb),
NULL, NULL, dbname);
if (PQstatus(settings->db) == CONNECTION_BAD) {
fprintf(stderr,
"could not reconnect to %s. exiting\n", dbname);
exit(2);
}
} else {
PQfinish(olddb);
free(settings->prompt);
settings->prompt = malloc(strlen(PQdb(settings->db)) + 10);
sprintf(settings->prompt, "%s%s", PQdb(settings->db), PROMPT);
}
}
}
static void
do_edit(const char *filename_arg, char *query, int *status_p)
{
int fd;
char tmp[64];
char *fname;
int cc;
const int ql = strlen(query);
bool error;
if (filename_arg) {
fname = (char *) filename_arg;
error = false;
} else {
sprintf(tmp, "/tmp/psql.%ld.%ld", (long) geteuid(), (long) getpid());
fname = tmp;
unlink(tmp);
if (ql > 0) {
if ((fd = open(tmp, O_EXCL | O_CREAT | O_WRONLY, 0600)) == -1) {
perror(tmp);
error = true;
} else {
if (query[ql - 1] != '\n')
strcat(query, "\n");
if (write(fd, query, ql) != ql) {
perror(tmp);
close(fd);
unlink(tmp);
error = true;
} else
error = false;
close(fd);
}
} else
error = false;
}
if (error)
*status_p = 1;
else {
editFile(fname);
if ((fd = open(fname, O_RDONLY)) == -1) {
perror(fname);
if (!filename_arg)
unlink(fname);
*status_p = 1;
} else {
if ((cc = read(fd, query, MAX_QUERY_BUFFER)) == -1) {
perror(fname);
close(fd);
if (!filename_arg)
unlink(fname);
*status_p = 1;
} else {
query[cc] = '\0';
close(fd);
if (!filename_arg)
unlink(fname);
rightTrim(query);
*status_p = 3;
}
}
}
}
static void
do_help(const char *topic)
{
if (!topic) {
char left_center_right; /* Which column we're
* displaying */
int i; /* Index into QL_HELP[] */
printf("type \\h <cmd> where <cmd> is one of the following:\n");
left_center_right = 'L';/* Start with left column */
i = 0;
while (QL_HELP[i].cmd != NULL) {
switch (left_center_right) {
case 'L':
printf(" %-25s", QL_HELP[i].cmd);
left_center_right = 'C';
break;
case 'C':
printf("%-25s", QL_HELP[i].cmd);
left_center_right = 'R';
break;
case 'R':
printf("%-25s\n", QL_HELP[i].cmd);
left_center_right = 'L';
break;
};
i++;
}
if (left_center_right != 'L')
puts("\n");
printf("type \\h * for a complete description of all commands\n");
} else {
int i; /* Index into QL_HELP[] */
bool help_found; /* We found the help he asked for */
help_found = false; /* Haven't found it yet */
for (i = 0; QL_HELP[i].cmd; i++) {
if (strcmp(QL_HELP[i].cmd, topic) == 0 ||
strcmp(topic, "*") == 0) {
help_found = true;
printf("Command: %s\n", QL_HELP[i].cmd);
printf("Description: %s\n", QL_HELP[i].help);
printf("Syntax:\n");
printf("%s\n", QL_HELP[i].syntax);
printf("\n");
}
}
if (!help_found)
printf("command not found, "
"try \\h with no arguments to see available help\n");
}
}
static void
do_shell(const char *command)
{
if (!command) {
char *sys;
char *shellName;
shellName = getenv("SHELL");
if (shellName == NULL)
shellName = DEFAULT_SHELL;
sys = malloc(strlen(shellName) + 16);
if (!sys) {
perror("malloc");
exit(1);
}
sprintf(sys, "exec %s", shellName);
system(sys);
free(sys);
} else
system(command);
}
/*
* HandleSlashCmds:
*
* Handles all the different commands that start with \ db_ptr is a pointer to
* the TgDb* structure line is the current input line prompt_ptr is a pointer
* to the prompt string, a pointer is used because the prompt can be used
* with a connection to a new database returns a status: 0 - send currently
* constructed query to backend (i.e. we got a \g) 1 - skip processing of
* this line, continue building up query 2 - terminate processing of this
* query entirely, 3 - new query supplied by edit
*/
int
HandleSlashCmds(PsqlSettings * settings,
char *line,
char *query)
{
int status = 1;
char *optarg;
/*
* Pointer inside the <cmd> string to the argument of the slash command,
* assuming it is a one-character slash command. If it's not a
* one-character command, this is meaningless.
*/
char *optarg2;
/*
* Pointer inside the <cmd> string to the argument of the slash command
* assuming it's not a one-character command. If it's a one-character
* command, this is meaningless.
*/
char *cmd;
/*
* String: value of the slash command, less the slash and with escape
* sequences decoded.
*/
int blank_loc;
/* Offset within <cmd> of first blank */
cmd = malloc(strlen(line)); /* unescaping better not make string grow. */
unescape(cmd, line + 1); /* sets cmd string */
/*
* Originally, there were just single character commands. Now, we define
* some longer, friendly commands, but we have to keep the old single
* character commands too. \c used to be what \connect is now.
* Complicating matters is the fact that with the single-character
* commands, you can start the argument right after the single character,
* so "\copy" would mean "connect to database named 'opy'".
*/
if (strlen(cmd) > 1)
optarg = cmd + 1 + strspn(cmd + 1, " \t");
else
optarg = NULL;
blank_loc = strcspn(cmd, " \t");
if (blank_loc == 0 || !cmd[blank_loc])
optarg2 = NULL;
else
optarg2 = cmd + blank_loc + strspn(cmd + blank_loc, " \t");
switch (cmd[0]) {
case 'a': /* toggles to align fields on output */
toggle(settings, &settings->opt.align, "field alignment");
break;
case 'C': /* define new caption */
if (settings->opt.caption)
free(settings->opt.caption);
if (!optarg)
{
if (settings->opt.caption)
free(settings->opt.caption);
settings->opt.caption = NULL;
}
else if (!(settings->opt.caption = strdup(optarg))) {
perror("malloc");
exit(1);
}
break;
case 'c':{
if (strncmp(cmd, "copy ", strlen("copy ")) == 0)
do_copy(optarg2, settings);
else if (strncmp(cmd, "connect ", strlen("connect ")) == 0 ||
strcmp(cmd, "connect") == 0 /* issue error message */) {
char *optarg3 = NULL;
int blank_loc2;
if (optarg2) {
blank_loc2 = strcspn(optarg2, " \t");
if (blank_loc2 == 0 || *(optarg2 + blank_loc2) == '\0')
optarg3 = NULL;
else {
optarg3 = optarg2 + blank_loc2 +
strspn(optarg2 + blank_loc2, " \t");
*(optarg2 + blank_loc2) = '\0';
}
}
do_connect(optarg2, optarg3, settings);
}
else {
char *optarg3 = NULL;
int blank_loc2;
if (optarg) {
blank_loc2 = strcspn(optarg, " \t");
if (blank_loc2 == 0 || *(optarg + blank_loc2) == '\0')
optarg3 = NULL;
else {
optarg3 = optarg + blank_loc2 +
strspn(optarg + blank_loc2, " \t");
*(optarg + blank_loc2) = '\0';
}
}
do_connect(optarg, optarg3, settings);
}
}
break;
case 'd': /* \d describe tables or columns in a table */
if (strncmp(cmd, "dt", 2) == 0) { /* only tables */
tableList(settings, 0, 't');
} else if (strncmp(cmd, "di", 2) == 0) { /* only tables */
tableList(settings, 0, 'i');
} else if (!optarg) { /* show'em both */
tableList(settings, 0, 'b');
} else if (strcmp(optarg, "*") == 0) { /* show everything */
tableList(settings, 0, 'b');
tableList(settings, 1, 'b');
} else { /* describe the specified table */
tableDesc(settings, optarg);
}
break;
case 'e': /* edit */
{
do_edit(optarg, query, &status);
break;
}
case 'E':
{
FILE *fd;
static char *lastfile;
struct stat st, st2;
if (optarg) {
if (lastfile)
free(lastfile);
lastfile = malloc(strlen(optarg + 1));
if (!lastfile) {
perror("malloc");
exit(1);
}
strcpy(lastfile, optarg);
} else if (!lastfile) {
fprintf(stderr, "\\r must be followed by a file name initially\n");
break;
}
stat(lastfile, &st);
editFile(lastfile);
if ((stat(lastfile, &st2) == -1) || ((fd = fopen(lastfile, "r")) == NULL)) {
perror(lastfile);
break;
}
if (st2.st_mtime == st.st_mtime) {
if (!settings->quiet)
fprintf(stderr, "warning: %s not modified. query not executed\n", lastfile);
fclose(fd);
break;
}
MainLoop(settings, fd);
fclose(fd);
break;
}
case 'f':
{
char *fs = DEFAULT_FIELD_SEP;
if (optarg)
fs = optarg;
if (settings->opt.fieldSep)
free(settings->opt.fieldSep);
if (!(settings->opt.fieldSep = strdup(fs))) {
perror("malloc");
exit(1);
}
if (!settings->quiet)
fprintf(stderr, "field separater changed to '%s'\n", settings->opt.fieldSep);
break;
}
case 'g': /* \g means send query */
if (!optarg)
settings->gfname = NULL;
else if (!(settings->gfname = strdup(optarg))) {
perror("malloc");
exit(1);
}
status = 0;
break;
case 'h': /* help */
{
do_help(optarg);
break;
}
case 'i': /* \i is include file */
{
FILE *fd;
if (!optarg) {
fprintf(stderr, "\\i must be followed by a file name\n");
break;
}
if ((fd = fopen(optarg, "r")) == NULL) {
fprintf(stderr, "file named %s could not be opened\n", optarg);
break;
}
MainLoop(settings, fd);
fclose(fd);
break;
}
case 'l': /* \l is list database */
listAllDbs(settings);
break;
case 'H':
if (toggle(settings, &settings->opt.html3, "HTML3.0 tabular output"))
settings->opt.standard = 0;
break;
case 'o':
setFout(settings, optarg);
break;
case 'p':
if (query) {
fputs(query, stdout);
fputc('\n', stdout);
}
break;
case 'q': /* \q is quit */
status = 2;
break;
case 'r': /* reset(clear) the buffer */
query[0] = '\0';
if (!settings->quiet)
fprintf(stderr, "buffer reset(cleared)\n");
break;
case 's': /* \s is save history to a file */
if (!optarg)
optarg = "/dev/tty";
#ifdef HAVE_HISTORY
if (write_history(optarg) != 0)
fprintf(stderr, "cannot write history to %s\n", optarg);
#endif
break;
case 'm': /* monitor like type-setting */
if (toggle(settings, &settings->opt.standard, "standard SQL separaters and padding")) {
settings->opt.html3 = settings->opt.expanded = 0;
settings->opt.align = settings->opt.header = 1;
if (settings->opt.fieldSep)
free(settings->opt.fieldSep);
settings->opt.fieldSep = strdup("|");
if (!settings->quiet)
fprintf(stderr, "field separater changed to '%s'\n", settings->opt.fieldSep);
} else {
if (settings->opt.fieldSep)
free(settings->opt.fieldSep);
settings->opt.fieldSep = strdup(DEFAULT_FIELD_SEP);
if (!settings->quiet)
fprintf(stderr, "field separater changed to '%s'\n", settings->opt.fieldSep);
}
break;
case 'z': /* list table rights (grant/revoke) */
rightsList(settings);
break;
case 't': /* toggle headers */
toggle(settings, &settings->opt.header, "output headings and row count");
break;
case 'T': /* define html <table ...> option */
if (settings->opt.tableOpt)
free(settings->opt.tableOpt);
if (!optarg)
settings->opt.tableOpt = NULL;
else if (!(settings->opt.tableOpt = strdup(optarg))) {
perror("malloc");
exit(1);
}
break;
case 'x':
toggle(settings, &settings->opt.expanded, "expanded table representation");
break;
case '!':
do_shell(optarg);
break;
default:
case '?': /* \? is help */
slashUsage(settings);
break;
}
free(cmd);
return status;
}
/*
* MainLoop: main processing loop for reading lines of input and sending them
* to the backend
*
* this loop is re-entrant. May be called by \i command which reads input from
* a file
*
* db_ptr must be initialized and set
*/
int
MainLoop(PsqlSettings * settings, FILE * source)
{
char *line; /* line of input */
int len; /* length of the line */
char query[MAX_QUERY_BUFFER]; /* multi-line query storage */
int successResult = 1;
int slashCmdStatus = 0;
/*
* slashCmdStatus can be: 0 - send currently constructed query to backend
* (i.e. we got a \g) 1 - skip processing of this line, continue building
* up query 2 - terminate processing of this query entirely 3 - new query
* supplied by edit
*/
bool querySent = false;
bool interactive;
READ_ROUTINE GetNextLine;
bool eof = 0;
/* We've reached the end of our command input. */
bool success;
bool in_quote;
bool was_bslash; /* backslash */
bool was_dash;
int paren_level;
char *query_start;
interactive = ((source == stdin) && !settings->notty);
if (interactive) {
if (settings->prompt)
free(settings->prompt);
settings->prompt =
malloc(strlen(PQdb(settings->db)) + strlen(PROMPT) + 1);
if (settings->quiet)
settings->prompt[0] = '\0';
else
sprintf(settings->prompt, "%s%s", PQdb(settings->db), PROMPT);
if (settings->useReadline) {
#ifdef HAVE_HISTORY
using_history();
#endif
GetNextLine = gets_readline;
} else
GetNextLine = gets_noreadline;
} else
GetNextLine = gets_fromFile;
query[0] = '\0';
in_quote = false;
paren_level = 0;
slashCmdStatus = -1; /* set default */
/* main loop for getting queries and executing them */
while (!eof) {
if (slashCmdStatus == 3) {
paren_level = 0;
line = strdup(query);
query[0] = '\0';
} else {
if (interactive && !settings->quiet) {
if (in_quote)
settings->prompt[strlen(settings->prompt)-3] = '\'';
else if (query[0] != '\0' && !querySent)
settings->prompt[strlen(settings->prompt)-3] = '-';
else
settings->prompt[strlen(settings->prompt)-3] = '=';
}
line = GetNextLine(settings->prompt, source);
#ifdef HAVE_HISTORY
if (interactive && settings->useReadline && line != NULL)
add_history(line); /* save non-empty lines in history */
#endif
}
query_start = line;
if (line == NULL) { /* No more input. Time to quit */
if (!settings->quiet)
printf("EOF\n"); /* Goes on prompt line */
eof = true;
} else {
/* remove whitespaces on the right, incl. \n's */
line = rightTrim(line);
if (!interactive && !settings->singleStep && !settings->quiet)
fprintf(stderr, "%s\n", line);
if (line[0] == '\0') {
free(line);
continue;
}
len = strlen(line);
if (settings->singleLineMode) {
SendQuery(&success, settings, line, false, false, 0);
successResult &= success;
querySent = true;
} else {
int i;
was_bslash = false;
was_dash = false;
for (i = 0; i < len; i++) {
if (!in_quote && line[i] == '\\') {
char hold_char = line[i];
line[i] = '\0';
if (query_start[0] != '\0') {
if (query[0] != '\0') {
strcat(query, "\n");
strcat(query, query_start);
} else
strcpy(query, query_start);
}
line[i] = hold_char;
query_start = line + i;
break; /* handle command */
}
if (querySent && !isspace(line[i])) {
query[0] = '\0';
querySent = false;
}
if (!in_quote && was_dash && line[i] == '-') {
/* print comment at top of query */
if (settings->singleStep)
fprintf(stdout, "%s\n", line + i - 1);
line[i - 1] = '\0'; /* remove comment */
break;
}
was_dash = false;
if (!in_quote && !paren_level &&
line[i] == ';') {
char hold_char = line[i + 1];
line[i + 1] = '\0';
if (query_start[0] != '\0') {
if (query[0] != '\0') {
strcat(query, "\n");
strcat(query, query_start);
} else
strcpy(query, query_start);
}
SendQuery(&success, settings, query, false, false, 0);
successResult &= success;
line[i + 1] = hold_char;
query_start = line + i + 1;
querySent = true;
}
if (was_bslash)
was_bslash = false;
else if (line[i] == '\\')
was_bslash = true;
else if (line[i] == '\'')
in_quote ^= 1;
else if (!in_quote && line[i] == '(')
paren_level++;
else if (!in_quote && paren_level && line[i] == ')')
paren_level--;
else if (!in_quote && line[i] == '-')
was_dash = true;
}
}
slashCmdStatus = -1;
/* slash commands have to be on their own line */
if (!in_quote && query_start[0] == '\\') {
slashCmdStatus = HandleSlashCmds(settings,
query_start,
query);
if (slashCmdStatus == 1) {
if (query[0] == '\0')
paren_level = 0;
free(line);
continue;
}
if (slashCmdStatus == 2) {
free(line);
break;
}
} else if (strlen(query) + strlen(query_start) > MAX_QUERY_BUFFER) {
fprintf(stderr, "query buffer max length of %d exceeded\n",
MAX_QUERY_BUFFER);
fprintf(stderr, "query line ignored\n");
} else {
if (query_start[0] != '\0') {
querySent = false;
if (query[0] != '\0') {
strcat(query, "\n");
strcat(query, query_start);
} else
strcpy(query, query_start);
}
}
if (slashCmdStatus == 0) {
SendQuery(&success, settings, query, false, false, 0);
successResult &= success;
querySent = true;
}
free(line); /* free storage malloc'd by GetNextLine */
}
} /* while */
return successResult;
}
int
main(int argc, char **argv)
{
extern char *optarg;
extern int optind;
char *dbname = NULL;
char *host = NULL;
char *port = NULL;
char *qfilename = NULL;
char errbuf[ERROR_MSG_LENGTH];
PsqlSettings settings;
char *singleQuery = NULL;
bool listDatabases = 0;
int successResult = 1;
bool singleSlashCmd = 0;
int c;
memset(&settings, 0, sizeof settings);
settings.opt.align = 1;
settings.opt.header = 1;
settings.queryFout = stdout;
settings.opt.fieldSep = strdup(DEFAULT_FIELD_SEP);
settings.opt.pager = 1;
if (!isatty(0) || !isatty(1))
settings.quiet = settings.notty = 1;
#ifdef HAVE_LIBREADLINE
else
settings.useReadline = 1;
#endif
#ifdef PSQL_ALWAYS_GET_PASSWORDS
settings.getPassword = 1;
#else
settings.getPassword = 0;
#endif
while ((c = getopt(argc, argv, "Aa:c:d:ef:F:lh:Hnso:p:qStT:ux")) != EOF) {
switch (c) {
case 'A':
settings.opt.align = 0;
break;
case 'a':
fe_setauthsvc(optarg, errbuf);
break;
case 'c':
singleQuery = optarg;
if (singleQuery[0] == '\\') {
singleSlashCmd = 1;
}
break;
case 'd':
dbname = optarg;
break;
case 'e':
settings.echoQuery = 1;
break;
case 'f':
qfilename = optarg;
break;
case 'F':
settings.opt.fieldSep = optarg;
break;
case 'l':
listDatabases = 1;
break;
case 'h':
host = optarg;
break;
case 'H':
settings.opt.html3 = 1;
break;
case 'n':
settings.useReadline = 0;
break;
case 'o':
setFout(&settings, optarg);
break;
case 'p':
port = optarg;
break;
case 'q':
settings.quiet = 1;
break;
case 's':
settings.singleStep = 1;
break;
case 'S':
settings.singleLineMode = 1;
break;
case 't':
settings.opt.header = 0;
break;
case 'T':
settings.opt.tableOpt = optarg;
break;
case 'u':
settings.getPassword = 1;
break;
case 'x':
settings.opt.expanded = 1;
break;
default:
usage(argv[0]);
break;
}
}
/* if we still have an argument, use it as the database name */
if (argc - optind == 1)
dbname = argv[optind];
if (listDatabases)
dbname = "template1";
if(settings.getPassword) {
char username[9];
char password[9];
char *connect_string;
prompt_for_password(username, password);
/* now use PQconnectdb so we can pass these options */
connect_string = make_connect_string(host, port, dbname, username, password);
settings.db = PQconnectdb(connect_string);
free(connect_string);
} else {
settings.db = PQsetdb(host, port, NULL, NULL, dbname);
}
dbname = PQdb(settings.db);
if (PQstatus(settings.db) == CONNECTION_BAD) {
fprintf(stderr, "Connection to database '%s' failed.\n", dbname);
fprintf(stderr, "%s", PQerrorMessage(settings.db));
exit(1);
}
if (listDatabases) {
exit(listAllDbs(&settings));
}
if (!settings.quiet && !singleQuery && !qfilename) {
printf("Welcome to the POSTGRESQL interactive sql monitor:\n");
printf(" Please read the file COPYRIGHT for copyright terms "
"of POSTGRESQL\n\n");
printf(" type \\? for help on slash commands\n");
printf(" type \\q to quit\n");
printf(" type \\g or terminate with semicolon to execute query\n");
printf(" You are currently connected to the database: %s\n\n", dbname);
}
if (qfilename || singleSlashCmd) {
/*
* read in a file full of queries instead of reading in queries
* interactively
*/
char *line;
if (singleSlashCmd) {
/* Not really a query, but "Do what I mean, not what I say." */
line = singleQuery;
} else {
line = malloc(strlen(qfilename) + 5);
sprintf(line, "\\i %s", qfilename);
}
HandleSlashCmds(&settings, line, "");
} else {
if (singleQuery) {
bool success; /* The query succeeded at the backend */
SendQuery(&success, &settings, singleQuery, false, false, 0);
successResult = success;
} else
successResult = MainLoop(&settings, stdin);
}
PQfinish(settings.db);
return !successResult;
}
#define COPYBUFSIZ 8192
static void
handleCopyOut(PGresult * res, bool quiet, FILE * copystream)
{
bool copydone;
char copybuf[COPYBUFSIZ];
int ret;
copydone = false; /* Can't be done; haven't started. */
while (!copydone) {
ret = PQgetline(res->conn, copybuf, COPYBUFSIZ);
if (copybuf[0] == '\\' &&
copybuf[1] == '.' &&
copybuf[2] == '\0') {
copydone = true; /* don't print this... */
} else {
fputs(copybuf, copystream);
switch (ret) {
case EOF:
copydone = true;
/* FALLTHROUGH */
case 0:
fputc('\n', copystream);
break;
case 1:
break;
}
}
}
fflush(copystream);
PQendcopy(res->conn);
}
static void
handleCopyIn(PGresult * res, const bool mustprompt, FILE * copystream)
{
bool copydone = false;
bool firstload;
bool linedone;
char copybuf[COPYBUFSIZ];
char *s;
int buflen;
int c;
if (mustprompt) {
fputs("Enter info followed by a newline\n", stdout);
fputs("End with a backslash and a "
"period on a line by itself.\n", stdout);
}
while (!copydone) { /* for each input line ... */
if (mustprompt) {
fputs(">> ", stdout);
fflush(stdout);
}
firstload = true;
linedone = false;
while (!linedone) { /* for each buffer ... */
s = copybuf;
buflen = COPYBUFSIZ;
for (; buflen > 1 &&
!(linedone = (c = getc(copystream)) == '\n' || c == EOF);
--buflen) {
*s++ = c;
}
if (c == EOF) {
PQputline(res->conn, "\\.");
copydone = true;
break;
}
*s = '\0';
PQputline(res->conn, copybuf);
if (firstload) {
if (!strcmp(copybuf, "\\.")) {
copydone = true;
}
firstload = false;
}
}
PQputline(res->conn, "\n");
}
PQendcopy(res->conn);
}
/*
* try to open fname and return a FILE *, if it fails, use stdout, instead
*/
FILE *
setFout(PsqlSettings * ps, char *fname)
{
if (ps->queryFout && ps->queryFout != stdout) {
if (ps->pipe)
pclose(ps->queryFout);
else
fclose(ps->queryFout);
}
if (!fname) {
ps->queryFout = stdout;
pqsignal(SIGPIPE, SIG_DFL);
}
else {
if (*fname == '|') {
pqsignal(SIGPIPE, SIG_IGN);
ps->queryFout = popen(fname + 1, "w");
ps->pipe = 1;
} else {
ps->queryFout = fopen(fname, "w");
pqsignal(SIGPIPE, SIG_DFL);
ps->pipe = 0;
}
if (!ps->queryFout) {
perror(fname);
ps->queryFout = stdout;
}
}
return ps->queryFout;
}
static void prompt_for_password(char *username, char *password)
{
int length;
#ifdef HAVE_TERMIOS_H
struct termios t_orig, t;
#endif
printf("Username: ");
fgets(username, 9, stdin);
length = strlen(username);
if(length > 0 && username[length-1] == '\n') username[length-1] = '\0';
printf("Password: ");
#ifdef HAVE_TERMIOS_H
tcgetattr(0, &t);
t_orig = t;
t.c_lflag &= ~ECHO;
tcsetattr(0, TCSADRAIN, &t);
#endif
fgets(password, 9, stdin);
#ifdef HAVE_TERMIOS_H
tcsetattr(0, TCSADRAIN, &t_orig);
#endif
length = strlen(password);
if(length > 0 && password[length-1] == '\n') password[length-1] = '\0';
printf("\n\n");
}
static char *make_connect_string(char *host, char *port, char *dbname,
char *username, char *password)
{
int connect_string_len = 0;
char *connect_string;
if(host)
connect_string_len += 6 + strlen(host); /* 6 == "host=" + " " */
if(username)
connect_string_len += 6 + strlen(username); /* 6 == "user=" + " " */
if(password)
connect_string_len += 10 + strlen(password); /* 10 == "password=" + " " */
if(port)
connect_string_len += 6 + strlen(port); /* 6 == "port=" + " " */
if(dbname)
connect_string_len += 8 + strlen(dbname); /* 8 == "dbname=" + " " */
connect_string_len += 18; /* "authtype=password" + null */
connect_string = (char *)malloc(connect_string_len);
if(!connect_string) {
return 0;
}
connect_string[0] = '\0';
if(host) {
strcat(connect_string, "host=");
strcat(connect_string, host);
strcat(connect_string, " ");
}
if(username) {
strcat(connect_string, "user=");
strcat(connect_string, username);
strcat(connect_string, " ");
}
if(password) {
strcat(connect_string, "password=");
strcat(connect_string, password);
strcat(connect_string, " ");
}
if(port) {
strcat(connect_string, "port=");
strcat(connect_string, port);
strcat(connect_string, " ");
}
if(dbname) {
strcat(connect_string, "dbname=");
strcat(connect_string, dbname);
strcat(connect_string, " ");
}
strcat(connect_string, "authtype=password");
return connect_string;
}