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Diffstat (limited to 'applets')
-rw-r--r--applets/applets.c130
1 files changed, 65 insertions, 65 deletions
diff --git a/applets/applets.c b/applets/applets.c
index a6e6598cc..8171a309d 100644
--- a/applets/applets.c
+++ b/applets/applets.c
@@ -59,22 +59,22 @@ static int config_ok;
#define CONFIG_FILE "/etc/busybox.conf"
-// applets [] is const, so we have to define this "override" structure
+/* applets [] is const, so we have to define this "override" structure */
struct BB_suid_config {
struct BB_applet *m_applet;
uid_t m_uid;
gid_t m_gid;
mode_t m_mode;
-
+
struct BB_suid_config *m_next;
};
static struct BB_suid_config *suid_config;
-#endif // CONFIG_FEATURE_SUID_CONFIG
+#endif /* CONFIG_FEATURE_SUID_CONFIG */
-#endif // CONFIG_FEATURE_SUID
+#endif /* CONFIG_FEATURE_SUID */
@@ -142,7 +142,7 @@ void run_applet_by_name(const char *name, int argc, char **argv)
#ifdef CONFIG_FEATURE_SUID
check_suid ( applet_using );
#endif
-
+
exit((*(applet_using->main)) (argc, argv));
}
/* Just in case they have renamed busybox - Check argv[1] */
@@ -157,17 +157,17 @@ void run_applet_by_name(const char *name, int argc, char **argv)
#ifdef CONFIG_FEATURE_SUID_CONFIG
-// check if u is member of group g
+/* check if u is member of group g */
static int ingroup ( uid_t u, gid_t g )
{
struct group *grp = getgrgid ( g );
-
+
if ( grp ) {
char **mem;
-
+
for ( mem = grp-> gr_mem; *mem; mem++ ) {
struct passwd *pwd = getpwnam ( *mem );
-
+
if ( pwd && ( pwd-> pw_uid == u ))
return 1;
}
@@ -180,43 +180,43 @@ static int ingroup ( uid_t u, gid_t g )
void check_suid ( struct BB_applet *applet )
{
- uid_t ruid = getuid ( ); // real [ug]id
+ uid_t ruid = getuid ( ); /* real [ug]id */
uid_t rgid = getgid ( );
-
+
#ifdef CONFIG_FEATURE_SUID_CONFIG
if ( config_ok ) {
struct BB_suid_config *sct;
-
+
for ( sct = suid_config; sct; sct = sct-> m_next ) {
if ( sct-> m_applet == applet )
break;
}
if ( sct ) {
mode_t m = sct-> m_mode;
-
- if ( sct-> m_uid == ruid ) // same uid
+
+ if ( sct-> m_uid == ruid ) /* same uid */
m >>= 6;
- else if (( sct-> m_gid == rgid ) || ingroup ( ruid, sct-> m_gid )) // same group / in group
+ else if (( sct-> m_gid == rgid ) || ingroup ( ruid, sct-> m_gid )) /* same group / in group */
m >>= 3;
- if (!( m & S_IXOTH )) // is x bit not set ?
+ if (!( m & S_IXOTH )) /* is x bit not set ? */
error_msg_and_die ( "You have no permission to run this applet!" );
-
- if (( sct-> m_mode & ( S_ISGID | S_IXGRP )) == ( S_ISGID | S_IXGRP )) { // *both* have to be set for sgid
+
+ if (( sct-> m_mode & ( S_ISGID | S_IXGRP )) == ( S_ISGID | S_IXGRP )) { /* *both* have to be set for sgid */
if ( setegid ( sct-> m_gid ))
error_msg_and_die ( "BusyBox binary has insufficient rights to set proper GID for applet!" );
}
else
- setgid ( rgid ); // no sgid -> drop
-
+ setgid ( rgid ); /* no sgid -> drop */
+
if ( sct-> m_mode & S_ISUID ) {
if ( seteuid ( sct-> m_uid ))
error_msg_and_die ( "BusyBox binary has insufficient rights to set proper UID for applet!" );
}
else
- setuid ( ruid ); // no suid -> drop
+ setuid ( ruid ); /* no suid -> drop */
}
- else { // default: drop all priviledges
+ else { /* default: drop all priviledges */
setgid ( rgid );
setuid ( ruid );
}
@@ -225,7 +225,7 @@ void check_suid ( struct BB_applet *applet )
else {
#ifndef CONFIG_FEATURE_SUID_CONFIG_QUIET
static int onetime = 0;
-
+
if ( !onetime ) {
onetime = 1;
fprintf ( stderr, "Using fallback suid method\n" );
@@ -239,7 +239,7 @@ void check_suid ( struct BB_applet *applet )
error_msg_and_die ( "This applet requires root priviledges!" );
}
else if ( applet-> need_suid == _BB_SUID_NEVER ) {
- setgid ( rgid ); // drop all priviledges
+ setgid ( rgid ); /* drop all priviledges */
setuid ( ruid );
}
}
@@ -258,90 +258,90 @@ int parse_config_file ( void )
int lc = 0;
suid_config = 0;
-
- // is there a config file ?
+
+ /* is there a config file ? */
if ( stat ( CONFIG_FILE, &st ) == 0 ) {
- // is it owned by root with no write perm. for group and others ?
+ /* is it owned by root with no write perm. for group and others ? */
if ( S_ISREG( st. st_mode ) && ( st. st_uid == 0 ) && (!( st. st_mode & ( S_IWGRP | S_IWOTH )))) {
- // that's ok .. then try to open it
+ /* that's ok .. then try to open it */
f = fopen ( CONFIG_FILE, "r" );
if ( f ) {
char buffer [256];
int section = 0;
-
+
while ( fgets ( buffer, sizeof( buffer ) - 1, f )) {
char c = buffer [0];
char *p;
-
+
lc++;
-
+
p = strchr ( buffer, '#' );
if ( p )
*p = 0;
p = buffer + xstrlen ( buffer );
while (( p > buffer ) && isspace ( *--p ))
*p = 0;
-
+
if ( p == buffer )
continue;
-
+
if ( c == '[' ) {
p = strchr ( buffer, ']' );
-
- if ( !p || ( p == ( buffer + 1 ))) // no matching ] or empty []
+
+ if ( !p || ( p == ( buffer + 1 ))) /* no matching ] or empty [] */
parse_error ( "malformed section header" );
*p = 0;
-
+
if ( strcasecmp ( buffer + 1, "SUID" ) == 0 )
section = 1;
else
- section = -1; // unknown section - just skip
+ section = -1; /* unknown section - just skip */
}
else if ( section ) {
switch ( section ) {
- case 1: { // SUID
+ case 1: { /* SUID */
int l;
struct BB_applet *applet;
- p = strchr ( buffer, '=' ); // <key>[::space::]*=[::space::]*<value>
-
- if ( !p || ( p == ( buffer + 1 ))) // no = or key is empty
+ p = strchr ( buffer, '=' ); /* <key>[::space::]*=[::space::]*<value> */
+
+ if ( !p || ( p == ( buffer + 1 ))) /* no = or key is empty */
parse_error ( "malformed keyword" );
-
+
l = p - buffer;
- while ( isspace ( buffer [--l] )) { } // skip whitespace
-
+ while ( isspace ( buffer [--l] )) { } /* skip whitespace */
+
buffer [l+1] = 0;
-
+
if (( applet = find_applet_by_name ( buffer ))) {
struct BB_suid_config *sct = xmalloc ( sizeof( struct BB_suid_config ));
-
+
sct-> m_applet = applet;
sct-> m_next = suid_config;
suid_config = sct;
-
- while ( isspace ( *++p )) { } // skip whitespace
-
+
+ while ( isspace ( *++p )) { } /* skip whitespace */
+
sct-> m_mode = 0;
-
+
switch ( *p++ ) {
case 'S': sct-> m_mode |= S_ISUID; break;
- case 's': sct-> m_mode |= S_ISUID; // no break
+ case 's': sct-> m_mode |= S_ISUID; /* no break */
case 'x': sct-> m_mode |= S_IXUSR; break;
case '-': break;
default : parse_error ( "invalid user mode" );
}
-
+
switch ( *p++ ) {
- case 's': sct-> m_mode |= S_ISGID; // no break
+ case 's': sct-> m_mode |= S_ISGID; /* no break */
case 'x': sct-> m_mode |= S_IXGRP; break;
case 'S': break;
case '-': break;
default : parse_error ( "invalid group mode" );
}
-
+
switch ( *p ) {
case 't':
case 'x': sct-> m_mode |= S_IXOTH; break;
@@ -349,9 +349,9 @@ int parse_config_file ( void )
case '-': break;
default : parse_error ( "invalid other mode" );
}
-
- while ( isspace ( *++p )) { } // skip whitespace
-
+
+ while ( isspace ( *++p )) { } /* skip whitespace */
+
if ( isdigit ( *p )) {
sct-> m_uid = strtol ( p, &p, 10 );
if ( *p++ != '.' )
@@ -363,13 +363,13 @@ int parse_config_file ( void )
if ( !p2 )
parse_error ( "parsing <uid>.<gid>" );
-
+
*p2 = 0;
pwd = getpwnam ( p );
-
+
if ( !pwd )
parse_error ( "invalid user name" );
-
+
sct-> m_uid = pwd-> pw_uid;
p = p2 + 1;
}
@@ -377,16 +377,16 @@ int parse_config_file ( void )
sct-> m_gid = strtol ( p, &p, 10 );
else {
struct group *grp = getgrnam ( p );
-
+
if ( !grp )
parse_error ( "invalid group name" );
-
+
sct-> m_gid = grp-> gr_gid;
}
}
break;
}
- default: // unknown - skip
+ default: /* unknown - skip */
break;
}
}
@@ -398,8 +398,8 @@ int parse_config_file ( void )
}
}
}
- return 0; // no config file or not readable (not an error)
-
+ return 0; /* no config file or not readable (not an error) */
+
pe_label:
fprintf ( stderr, "Parse error in %s, line %d: %s\n", CONFIG_FILE, lc, err );
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 22:56:24 +0000