diff options
Diffstat (limited to 'usr/src/lib/libast/common/string/struid.c')
| -rw-r--r-- | usr/src/lib/libast/common/string/struid.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/string/struid.c b/usr/src/lib/libast/common/string/struid.c new file mode 100644 index 0000000000..851d49b5e5 --- /dev/null +++ b/usr/src/lib/libast/common/string/struid.c @@ -0,0 +1,109 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped +/* + * Glenn Fowler + * AT&T Bell Laboratories + * + * uid name -> number + */ + +#if defined(__STDPP__directive) && defined(__STDPP__hide) +__STDPP__directive pragma pp:hide getpwnam getpwuid +#else +#define getpwnam ______getpwnam +#define getpwuid ______getpwuid +#endif + +#include <ast.h> +#include <cdt.h> +#include <pwd.h> + +#if defined(__STDPP__directive) && defined(__STDPP__hide) +__STDPP__directive pragma pp:nohide getpwnam getpwuid +#else +#undef getpwnam +#undef getpwuid +#endif + +extern struct passwd* getpwnam(const char*); +extern struct passwd* getpwuid(uid_t); + +typedef struct Id_s +{ + Dtlink_t link; + int id; + char name[1]; +} Id_t; + +/* + * return uid number given uid name + * -1 on first error for a given name + * -2 on subsequent errors for a given name + */ + +int +struid(const char* name) +{ + register Id_t* ip; + register struct passwd* pw; + int id; + char* e; + + static Dt_t* dict; + static Dtdisc_t disc; + + if (!dict) + { + disc.key = offsetof(Id_t, name); + dict = dtopen(&disc, Dthash); + } + else if (ip = (Id_t*)dtmatch(dict, name)) + return ip->id; + if (pw = getpwnam(name)) + id = pw->pw_uid; + else + { + id = strtol(name, &e, 0); +#if _WINIX + if (!*e) + { + if (!getpwuid(id)) + id = -1; + } + else if (streq(name, "root") && (pw = getpwnam("Administrator"))) + id = pw->pw_uid; + else + id = -1; +#else + if (*e || !getpwuid(id)) + id = -1; +#endif + } + if (dict && (ip = newof(0, Id_t, 1, strlen(name)))) + { + strcpy(ip->name, name); + ip->id = id >= 0 ? id : -2; + dtinsert(dict, ip); + } + return id; +} |