diff options
Diffstat (limited to 'idmapwb.c')
| -rw-r--r-- | idmapwb.c | 63 |
1 files changed, 63 insertions, 0 deletions
@@ -52,6 +52,25 @@ csid_to_wsid(struct wbcDomainSid *wsid, const struct cifs_sid *csid) wsid->sub_auths[i] = le32toh(csid->sub_auth[i]); } +/* + * Winbind keeps wbcDomainSid fields in host-endian. Copy fields from the + * wsid to the csid, while converting the subauthority fields to LE. + */ +static void +wsid_to_csid(struct cifs_sid *csid, struct wbcDomainSid *wsid) +{ + int i; + uint8_t num_subauth = (wsid->num_auths <= SID_MAX_SUB_AUTHORITIES) ? + wsid->num_auths : SID_MAX_SUB_AUTHORITIES; + + csid->revision = wsid->sid_rev_num; + csid->num_subauth = num_subauth; + for (i = 0; i < NUM_AUTHS; i++) + csid->authority[i] = wsid->id_auth[i]; + for (i = 0; i < num_subauth; i++) + csid->sub_auth[i] = htole32(wsid->sub_auths[i]); +} + int cifs_idmap_sid_to_str(void *handle __attribute__ ((unused)), const struct cifs_sid *csid, char **string) @@ -97,6 +116,50 @@ out: return rc; } +int +cifs_idmap_str_to_sid(void *handle __attribute__ ((unused)), + const char *orig, struct cifs_sid *csid) +{ + wbcErr wbcrc; + char *name, *domain, *sidstr; + enum wbcSidType type; + struct wbcDomainSid wsid; + + sidstr = strdup(orig); + if (!sidstr) { + *plugin_errmsg = "Unable to copy string"; + return -ENOMEM; + } + + name = strchr(sidstr, '\\'); + if (!name) { + /* might be a raw string representation of SID */ + wbcrc = wbcStringToSid(sidstr, &wsid); + if (WBC_ERROR_IS_OK(wbcrc)) + goto convert_sid; + + domain = ""; + name = sidstr; + } else { + domain = sidstr; + *name = '\0'; + ++name; + } + + wbcrc = wbcLookupName(domain, name, &wsid, &type); + /* FIXME: map these to better POSIX error codes? */ + if (!WBC_ERROR_IS_OK(wbcrc)) { + *plugin_errmsg = wbcErrorString(wbcrc); + free(sidstr); + return -EIO; + } + +convert_sid: + wsid_to_csid(csid, &wsid); + free(sidstr); + return 0; +} + /* * For the winbind plugin, we don't need to do anything special on * init or exit |