diff options
Diffstat (limited to 'nslcd/common.c')
| -rw-r--r-- | nslcd/common.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/nslcd/common.c b/nslcd/common.c index a181dca..840be1c 100644 --- a/nslcd/common.c +++ b/nslcd/common.c @@ -73,6 +73,38 @@ const char *get_userpassword(MYLDAP_ENTRY *entry,const char *attr) (any code for this is more than welcome) */ } +/* + Checks to see if the specified name seems to be a valid user or group name. + + This test is based on the definition from POSIX (IEEE Std 1003.1, 2004, + 3.426 User Name, 3.189 Group Name and 3.276 Portable Filename Character Set): + http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_426 + http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_189 + http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_276 + + The standard defines user names valid if they contain characters from + the set [A-Za-z0-9._-] where the hyphen should not be used as first + character. As an extension this test allows the at '@' and dolar '$' signs. +*/ +int isvalidname(const char *name) +{ + int i; + if ((name==NULL)||(name[0]=='\0')) + return 0; + /* check characters */ + for (i=0;name[i]!='\0';i++) + { + if ( ! ( ( (i!=0) && (name[i]=='-') ) || + (name[i]>='@' && name[i] <= 'Z') || + (name[i]>='a' && name[i] <= 'z') || + (name[i]>='0' && name[i] <= '9') || + name[i]=='.' || name[i]=='_' || name[i]=='$') ) + return 0; + } + /* no test failed so it must be good */ + return -1; +} + /* this writes a single address to the stream */ int write_address(TFILE *fp,const char *addr) { |