Add user-specific .pg_service.conf file
This extends the existing pg_service.conf facility to first look for a service definition file in the user's home directory.
This commit is contained in:
Peter Eisentraut
parent
e8aae273d4
commit
41a4e45957
2 changed files with 207 additions and 124 deletions
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@ -1,4 +1,4 @@
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<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.293 2010/01/20 00:42:28 rhaas Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.294 2010/01/20 21:15:21 petere Exp $ -->
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<chapter id="libpq">
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<title><application>libpq</application> - C Library</title>
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@ -5791,6 +5791,18 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
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</para>
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</listitem>
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<listitem>
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<para>
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<indexterm>
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<primary><envar>PGSERVICEFILE</envar></primary>
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</indexterm>
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<envar>PGSERVICEFILE</envar> specifies the name of the per-user
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connection service file. If not set, it defaults
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to <filename>~/.pg_service.conf</>
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(see <xref linkend="libpq-pgservice">).
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</para>
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</listitem>
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<listitem>
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<para>
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<indexterm>
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@ -5987,7 +5999,8 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
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<primary><envar>PGSYSCONFDIR</envar></primary>
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</indexterm>
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<envar>PGSYSCONFDIR</envar> sets the directory containing the
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<filename>pg_service.conf</> file.
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<filename>pg_service.conf</> file and in a future version
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possibly other system-wide configuration files.
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</para>
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</listitem>
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@ -6063,6 +6076,9 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
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<indexterm zone="libpq-pgservice">
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<primary>pg_service.conf</primary>
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</indexterm>
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<indexterm zone="libpq-pgservice">
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<primary>.pg_service.conf</primary>
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</indexterm>
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<para>
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The connection service file allows libpq connection parameters to be
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@ -6074,12 +6090,31 @@ myEventProc(PGEventId evtId, void *evtInfo, void *passThrough)
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</para>
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<para>
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To use this feature, copy
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<filename>share/pg_service.conf.sample</filename> to
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<filename>etc/pg_service.conf</filename> and edit the file to add
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service names and parameters. This file can be used for client-only
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installs too. The file's location can also be specified by the
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<envar>PGSYSCONFDIR</envar> environment variable.
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The connection service file can be a per-user service file
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at <filename>~/.pg_service.conf</filename> or the location
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specified by the environment variable <envar>PGSERVICEFILE</envar>,
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or it can be a system-wide file
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at <filename>etc/pg_service.conf</filename> or in the directory
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specified by the environment variable
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<envar>PGSYSCONFDIR</envar>. If service definitions with the same
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name exist in the user and the system file, the user file takes
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precedence.
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</para>
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<para>
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The file uses an <quote>INI file</quote> format where the section
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name is the service name and the parameters are connection
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parameters; see <xref linkend="libpq-connect"> for a list. For
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example:
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<programlisting>
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# comment
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[mydb]
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host=somehost
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port=5433
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user=admin
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</programlisting>
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An example file is provided at
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<filename>share/pg_service.conf.sample</filename>.
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</para>
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</sect1>
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.383 2010/01/15 09:19:10 heikki Exp $
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* $PostgreSQL: pgsql/src/interfaces/libpq/fe-connect.c,v 1.384 2010/01/20 21:15:21 petere Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -272,6 +272,11 @@ static void defaultNoticeReceiver(void *arg, const PGresult *res);
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static void defaultNoticeProcessor(void *arg, const char *message);
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static int parseServiceInfo(PQconninfoOption *options,
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PQExpBuffer errorMessage);
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static int parseServiceFile(const char *serviceFile,
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const char *service,
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PQconninfoOption *options,
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PQExpBuffer errorMessage,
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bool *group_found);
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static char *pwdfMatchesString(char *buf, char *token);
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static char *PasswordFromFile(char *hostname, char *port, char *dbname,
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char *username);
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@ -3095,9 +3100,10 @@ parseServiceInfo(PQconninfoOption *options, PQExpBuffer errorMessage)
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{
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char *service = conninfo_getval(options, "service");
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char serviceFile[MAXPGPATH];
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char *env;
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bool group_found = false;
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int linenr = 0,
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i;
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int status;
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struct stat stat_buf;
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/*
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* We have to special-case the environment variable PGSERVICE here, since
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@ -3107,154 +3113,196 @@ parseServiceInfo(PQconninfoOption *options, PQExpBuffer errorMessage)
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if (service == NULL)
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service = getenv("PGSERVICE");
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if (service == NULL)
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return 0;
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if ((env = getenv("PGSERVICEFILE")) != NULL)
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strlcpy(serviceFile, env, sizeof(serviceFile));
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else
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{
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char homedir[MAXPGPATH];
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if (!pqGetHomeDirectory(homedir, sizeof(homedir)))
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{
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printfPQExpBuffer(errorMessage, libpq_gettext("could not get home directory to locate service definition file"));
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return 1;
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}
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snprintf(serviceFile, MAXPGPATH, "%s/%s", homedir, ".pg_service.conf");
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errno = 0;
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if (stat(serviceFile, &stat_buf) != 0 && errno == ENOENT)
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goto next_file;
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}
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status = parseServiceFile(serviceFile, service, options, errorMessage, &group_found);
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if (group_found || status != 0)
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return status;
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next_file:
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/*
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* This could be used by any application so we can't use the binary
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* location to find our config files.
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*/
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snprintf(serviceFile, MAXPGPATH, "%s/pg_service.conf",
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getenv("PGSYSCONFDIR") ? getenv("PGSYSCONFDIR") : SYSCONFDIR);
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errno = 0;
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if (stat(serviceFile, &stat_buf) != 0 && errno == ENOENT)
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goto last_file;
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if (service != NULL)
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status = parseServiceFile(serviceFile, service, options, errorMessage, &group_found);
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if (status != 0)
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return status;
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last_file:
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if (!group_found)
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{
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FILE *f;
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char buf[MAXBUFSIZE],
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*line;
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printfPQExpBuffer(errorMessage,
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libpq_gettext("definition of service \"%s\" not found\n"), service);
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return 3;
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}
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f = fopen(serviceFile, "r");
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if (f == NULL)
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return 0;
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}
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static int
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parseServiceFile(const char *serviceFile,
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const char *service,
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PQconninfoOption *options,
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PQExpBuffer errorMessage,
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bool *group_found)
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{
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int linenr = 0,
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i;
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FILE *f;
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char buf[MAXBUFSIZE],
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*line;
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f = fopen(serviceFile, "r");
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if (f == NULL)
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{
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printfPQExpBuffer(errorMessage, libpq_gettext("service file \"%s\" not found\n"),
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serviceFile);
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return 1;
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}
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while ((line = fgets(buf, sizeof(buf), f)) != NULL)
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{
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linenr++;
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if (strlen(line) >= sizeof(buf) - 1)
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{
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printfPQExpBuffer(errorMessage, libpq_gettext("service file \"%s\" not found\n"),
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fclose(f);
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printfPQExpBuffer(errorMessage,
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libpq_gettext("line %d too long in service file \"%s\"\n"),
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linenr,
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serviceFile);
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return 1;
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return 2;
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}
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while ((line = fgets(buf, sizeof(buf), f)) != NULL)
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/* ignore EOL at end of line */
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if (strlen(line) && line[strlen(line) - 1] == '\n')
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line[strlen(line) - 1] = 0;
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/* ignore leading blanks */
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while (*line && isspace((unsigned char) line[0]))
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line++;
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/* ignore comments and empty lines */
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if (strlen(line) == 0 || line[0] == '#')
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continue;
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/* Check for right groupname */
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if (line[0] == '[')
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{
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linenr++;
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if (strlen(line) >= sizeof(buf) - 1)
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if (*group_found)
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{
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/* group info already read */
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fclose(f);
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printfPQExpBuffer(errorMessage,
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libpq_gettext("line %d too long in service file \"%s\"\n"),
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linenr,
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serviceFile);
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return 2;
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return 0;
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}
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/* ignore EOL at end of line */
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if (strlen(line) && line[strlen(line) - 1] == '\n')
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line[strlen(line) - 1] = 0;
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/* ignore leading blanks */
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while (*line && isspace((unsigned char) line[0]))
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line++;
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/* ignore comments and empty lines */
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if (strlen(line) == 0 || line[0] == '#')
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continue;
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/* Check for right groupname */
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if (line[0] == '[')
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{
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if (group_found)
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{
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/* group info already read */
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fclose(f);
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return 0;
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}
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if (strncmp(line + 1, service, strlen(service)) == 0 &&
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line[strlen(service) + 1] == ']')
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group_found = true;
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else
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group_found = false;
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}
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if (strncmp(line + 1, service, strlen(service)) == 0 &&
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line[strlen(service) + 1] == ']')
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*group_found = true;
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else
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*group_found = false;
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}
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else
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{
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if (*group_found)
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{
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if (group_found)
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{
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/*
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* Finally, we are in the right group and can parse the
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* line
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*/
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char *key,
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*val;
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bool found_keyword;
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/*
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* Finally, we are in the right group and can parse
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* the line
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*/
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char *key,
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*val;
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bool found_keyword;
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#ifdef USE_LDAP
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if (strncmp(line, "ldap", 4) == 0)
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{
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int rc = ldapServiceLookup(line, options, errorMessage);
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if (strncmp(line, "ldap", 4) == 0)
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{
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int rc = ldapServiceLookup(line, options, errorMessage);
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/* if rc = 2, go on reading for fallback */
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switch (rc)
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{
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case 0:
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fclose(f);
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return 0;
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case 1:
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case 3:
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fclose(f);
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return 3;
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case 2:
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continue;
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}
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/* if rc = 2, go on reading for fallback */
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switch (rc)
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{
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case 0:
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fclose(f);
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return 0;
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case 1:
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case 3:
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fclose(f);
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return 3;
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case 2:
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continue;
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}
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}
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#endif
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key = line;
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val = strchr(line, '=');
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if (val == NULL)
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{
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printfPQExpBuffer(errorMessage,
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libpq_gettext("syntax error in service file \"%s\", line %d\n"),
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serviceFile,
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linenr);
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fclose(f);
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return 3;
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}
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*val++ = '\0';
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key = line;
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val = strchr(line, '=');
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if (val == NULL)
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{
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printfPQExpBuffer(errorMessage,
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libpq_gettext("syntax error in service file \"%s\", line %d\n"),
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serviceFile,
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linenr);
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fclose(f);
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return 3;
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}
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*val++ = '\0';
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/*
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* Set the parameter --- but don't override any previous
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* explicit setting.
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*/
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found_keyword = false;
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for (i = 0; options[i].keyword; i++)
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/*
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* Set the parameter --- but don't override any previous
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* explicit setting.
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*/
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found_keyword = false;
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for (i = 0; options[i].keyword; i++)
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{
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if (strcmp(options[i].keyword, key) == 0)
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{
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if (strcmp(options[i].keyword, key) == 0)
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{
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if (options[i].val == NULL)
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options[i].val = strdup(val);
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found_keyword = true;
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break;
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}
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if (options[i].val == NULL)
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options[i].val = strdup(val);
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found_keyword = true;
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break;
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}
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}
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if (!found_keyword)
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{
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printfPQExpBuffer(errorMessage,
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libpq_gettext("syntax error in service file \"%s\", line %d\n"),
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serviceFile,
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linenr);
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fclose(f);
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return 3;
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}
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if (!found_keyword)
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{
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printfPQExpBuffer(errorMessage,
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libpq_gettext("syntax error in service file \"%s\", line %d\n"),
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serviceFile,
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linenr);
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fclose(f);
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return 3;
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}
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}
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}
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fclose(f);
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if (!group_found)
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{
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printfPQExpBuffer(errorMessage,
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libpq_gettext("definition of service \"%s\" not found\n"), service);
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return 3;
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}
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}
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fclose(f);
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return 0;
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}
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