Run through indent, use /* */ style comments instead of //
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f853db54f9
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@ -59,7 +59,7 @@ static int config_ok;
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#define CONFIG_FILE "/etc/busybox.conf"
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#define CONFIG_FILE "/etc/busybox.conf"
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// applets [] is const, so we have to define this "override" structure
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/* applets [] is const, so we have to define this "override" structure */
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struct BB_suid_config {
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struct BB_suid_config {
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struct BB_applet *m_applet;
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struct BB_applet *m_applet;
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@ -72,9 +72,9 @@ struct BB_suid_config {
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static struct BB_suid_config *suid_config;
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static struct BB_suid_config *suid_config;
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#endif // CONFIG_FEATURE_SUID_CONFIG
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#endif /* CONFIG_FEATURE_SUID_CONFIG */
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#endif // CONFIG_FEATURE_SUID
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#endif /* CONFIG_FEATURE_SUID */
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@ -157,7 +157,7 @@ void run_applet_by_name(const char *name, int argc, char **argv)
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#ifdef CONFIG_FEATURE_SUID_CONFIG
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#ifdef CONFIG_FEATURE_SUID_CONFIG
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// check if u is member of group g
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/* check if u is member of group g */
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static int ingroup ( uid_t u, gid_t g )
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static int ingroup ( uid_t u, gid_t g )
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{
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{
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struct group *grp = getgrgid ( g );
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struct group *grp = getgrgid ( g );
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@ -180,7 +180,7 @@ static int ingroup ( uid_t u, gid_t g )
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void check_suid ( struct BB_applet *applet )
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void check_suid ( struct BB_applet *applet )
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{
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{
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uid_t ruid = getuid ( ); // real [ug]id
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uid_t ruid = getuid ( ); /* real [ug]id */
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uid_t rgid = getgid ( );
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uid_t rgid = getgid ( );
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#ifdef CONFIG_FEATURE_SUID_CONFIG
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#ifdef CONFIG_FEATURE_SUID_CONFIG
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@ -194,29 +194,29 @@ void check_suid ( struct BB_applet *applet )
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if ( sct ) {
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if ( sct ) {
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mode_t m = sct-> m_mode;
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mode_t m = sct-> m_mode;
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if ( sct-> m_uid == ruid ) // same uid
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if ( sct-> m_uid == ruid ) /* same uid */
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m >>= 6;
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m >>= 6;
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else if (( sct-> m_gid == rgid ) || ingroup ( ruid, sct-> m_gid )) // same group / in group
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else if (( sct-> m_gid == rgid ) || ingroup ( ruid, sct-> m_gid )) /* same group / in group */
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m >>= 3;
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m >>= 3;
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if (!( m & S_IXOTH )) // is x bit not set ?
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if (!( m & S_IXOTH )) /* is x bit not set ? */
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error_msg_and_die ( "You have no permission to run this applet!" );
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error_msg_and_die ( "You have no permission to run this applet!" );
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if (( sct-> m_mode & ( S_ISGID | S_IXGRP )) == ( S_ISGID | S_IXGRP )) { // *both* have to be set for sgid
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if (( sct-> m_mode & ( S_ISGID | S_IXGRP )) == ( S_ISGID | S_IXGRP )) { /* *both* have to be set for sgid */
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if ( setegid ( sct-> m_gid ))
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if ( setegid ( sct-> m_gid ))
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error_msg_and_die ( "BusyBox binary has insufficient rights to set proper GID for applet!" );
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error_msg_and_die ( "BusyBox binary has insufficient rights to set proper GID for applet!" );
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}
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}
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else
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else
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setgid ( rgid ); // no sgid -> drop
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setgid ( rgid ); /* no sgid -> drop */
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if ( sct-> m_mode & S_ISUID ) {
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if ( sct-> m_mode & S_ISUID ) {
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if ( seteuid ( sct-> m_uid ))
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if ( seteuid ( sct-> m_uid ))
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error_msg_and_die ( "BusyBox binary has insufficient rights to set proper UID for applet!" );
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error_msg_and_die ( "BusyBox binary has insufficient rights to set proper UID for applet!" );
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}
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}
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else
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else
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setuid ( ruid ); // no suid -> drop
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setuid ( ruid ); /* no suid -> drop */
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}
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}
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else { // default: drop all priviledges
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else { /* default: drop all priviledges */
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setgid ( rgid );
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setgid ( rgid );
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setuid ( ruid );
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setuid ( ruid );
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}
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}
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@ -239,7 +239,7 @@ void check_suid ( struct BB_applet *applet )
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error_msg_and_die ( "This applet requires root priviledges!" );
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error_msg_and_die ( "This applet requires root priviledges!" );
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}
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}
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else if ( applet-> need_suid == _BB_SUID_NEVER ) {
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else if ( applet-> need_suid == _BB_SUID_NEVER ) {
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setgid ( rgid ); // drop all priviledges
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setgid ( rgid ); /* drop all priviledges */
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setuid ( ruid );
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setuid ( ruid );
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}
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}
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}
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}
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@ -259,11 +259,11 @@ int parse_config_file ( void )
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suid_config = 0;
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suid_config = 0;
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// is there a config file ?
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/* is there a config file ? */
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if ( stat ( CONFIG_FILE, &st ) == 0 ) {
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if ( stat ( CONFIG_FILE, &st ) == 0 ) {
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// is it owned by root with no write perm. for group and others ?
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/* is it owned by root with no write perm. for group and others ? */
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if ( S_ISREG( st. st_mode ) && ( st. st_uid == 0 ) && (!( st. st_mode & ( S_IWGRP | S_IWOTH )))) {
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if ( S_ISREG( st. st_mode ) && ( st. st_uid == 0 ) && (!( st. st_mode & ( S_IWGRP | S_IWOTH )))) {
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// that's ok .. then try to open it
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/* that's ok .. then try to open it */
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f = fopen ( CONFIG_FILE, "r" );
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f = fopen ( CONFIG_FILE, "r" );
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if ( f ) {
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if ( f ) {
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@ -289,7 +289,7 @@ int parse_config_file ( void )
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if ( c == '[' ) {
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if ( c == '[' ) {
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p = strchr ( buffer, ']' );
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p = strchr ( buffer, ']' );
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if ( !p || ( p == ( buffer + 1 ))) // no matching ] or empty []
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if ( !p || ( p == ( buffer + 1 ))) /* no matching ] or empty [] */
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parse_error ( "malformed section header" );
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parse_error ( "malformed section header" );
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*p = 0;
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*p = 0;
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@ -297,21 +297,21 @@ int parse_config_file ( void )
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if ( strcasecmp ( buffer + 1, "SUID" ) == 0 )
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if ( strcasecmp ( buffer + 1, "SUID" ) == 0 )
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section = 1;
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section = 1;
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else
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else
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section = -1; // unknown section - just skip
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section = -1; /* unknown section - just skip */
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}
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}
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else if ( section ) {
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else if ( section ) {
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switch ( section ) {
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switch ( section ) {
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case 1: { // SUID
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case 1: { /* SUID */
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int l;
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int l;
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struct BB_applet *applet;
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struct BB_applet *applet;
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p = strchr ( buffer, '=' ); // <key>[::space::]*=[::space::]*<value>
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p = strchr ( buffer, '=' ); /* <key>[::space::]*=[::space::]*<value> */
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if ( !p || ( p == ( buffer + 1 ))) // no = or key is empty
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if ( !p || ( p == ( buffer + 1 ))) /* no = or key is empty */
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parse_error ( "malformed keyword" );
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parse_error ( "malformed keyword" );
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l = p - buffer;
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l = p - buffer;
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while ( isspace ( buffer [--l] )) { } // skip whitespace
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while ( isspace ( buffer [--l] )) { } /* skip whitespace */
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buffer [l+1] = 0;
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buffer [l+1] = 0;
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@ -322,20 +322,20 @@ int parse_config_file ( void )
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sct-> m_next = suid_config;
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sct-> m_next = suid_config;
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suid_config = sct;
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suid_config = sct;
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while ( isspace ( *++p )) { } // skip whitespace
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while ( isspace ( *++p )) { } /* skip whitespace */
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sct-> m_mode = 0;
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sct-> m_mode = 0;
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switch ( *p++ ) {
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switch ( *p++ ) {
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case 'S': sct-> m_mode |= S_ISUID; break;
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case 'S': sct-> m_mode |= S_ISUID; break;
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case 's': sct-> m_mode |= S_ISUID; // no break
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case 's': sct-> m_mode |= S_ISUID; /* no break */
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case 'x': sct-> m_mode |= S_IXUSR; break;
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case 'x': sct-> m_mode |= S_IXUSR; break;
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case '-': break;
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case '-': break;
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default : parse_error ( "invalid user mode" );
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default : parse_error ( "invalid user mode" );
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}
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}
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switch ( *p++ ) {
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switch ( *p++ ) {
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case 's': sct-> m_mode |= S_ISGID; // no break
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case 's': sct-> m_mode |= S_ISGID; /* no break */
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case 'x': sct-> m_mode |= S_IXGRP; break;
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case 'x': sct-> m_mode |= S_IXGRP; break;
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case 'S': break;
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case 'S': break;
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case '-': break;
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case '-': break;
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@ -350,7 +350,7 @@ int parse_config_file ( void )
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default : parse_error ( "invalid other mode" );
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default : parse_error ( "invalid other mode" );
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}
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}
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while ( isspace ( *++p )) { } // skip whitespace
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while ( isspace ( *++p )) { } /* skip whitespace */
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if ( isdigit ( *p )) {
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if ( isdigit ( *p )) {
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sct-> m_uid = strtol ( p, &p, 10 );
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sct-> m_uid = strtol ( p, &p, 10 );
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@ -386,7 +386,7 @@ int parse_config_file ( void )
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}
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}
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break;
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break;
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}
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}
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default: // unknown - skip
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default: /* unknown - skip */
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break;
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break;
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}
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}
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}
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}
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@ -398,7 +398,7 @@ int parse_config_file ( void )
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}
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}
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}
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}
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}
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}
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return 0; // no config file or not readable (not an error)
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return 0; /* no config file or not readable (not an error) */
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pe_label:
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pe_label:
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fprintf ( stderr, "Parse error in %s, line %d: %s\n", CONFIG_FILE, lc, err );
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fprintf ( stderr, "Parse error in %s, line %d: %s\n", CONFIG_FILE, lc, err );
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