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If the invoking user cannot be resolved by uid fake the struct

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passwd and store it in the cache so we can delref it on exit.
This commit is contained in:
Todd C. Miller
2011-09-25 06:35:40 -04:00
parent 842526d71f
commit 05bfd66693
3 changed files with 22 additions and 14 deletions
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18
plugins/sudoers/pwutil.c
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@@ -312,10 +312,10 @@ done:
}
/*
* Take a uid in string form "#123" and return a faked up passwd struct.
* Take a user, uid and gid and return a faked up passwd struct.
*/
struct passwd *
sudo_fakepwnam(const char *user, gid_t gid)
sudo_fakepwnamid(const char *user, uid_t uid, gid_t gid)
{
struct cache_item *item;
struct passwd *pw;
@@ -332,7 +332,7 @@ sudo_fakepwnam(const char *user, gid_t gid)
item = emalloc(len);
zero_bytes(item, sizeof(*item) + sizeof(*pw));
pw = (struct passwd *) ((char *)item + sizeof(*item));
pw->pw_uid = (uid_t) atoi(user + 1);
pw->pw_uid = uid;
pw->pw_gid = gid;
pw->pw_name = (char *)pw + sizeof(struct passwd);
memcpy(pw->pw_name, user, namelen + 1);
@@ -367,6 +367,18 @@ sudo_fakepwnam(const char *user, gid_t gid)
return pw;
}
/*
* Take a uid in string form "#123" and return a faked up passwd struct.
*/
struct passwd *
sudo_fakepwnam(const char *user, gid_t gid)
{
uid_t uid;
uid = (uid_t) atoi(user + 1);
return sudo_fakepwnamid(user, uid, gid);
}
void
sudo_setpwent(void)
{