diff options
Diffstat (limited to 'nis/nss_nis')
| -rw-r--r-- | nis/nss_nis/nis-service.c | 174 |
1 files changed, 120 insertions, 54 deletions
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c index 9af9fd2..b0a6236 100644 --- a/nis/nss_nis/nis-service.c +++ b/nis/nss_nis/nis-service.c @@ -51,6 +51,18 @@ typedef struct intern_t intern_t; static intern_t intern = { NULL, NULL }; +struct search_t +{ + const char *name; + const char *proto; + int port; + enum nss_status status; + struct servent *serv; + char *buffer; + size_t buflen; + int *errnop; +}; + static int saveit (int instatus, char *inkey, int inkeylen, char *inval, int invallen, char *indata) @@ -80,6 +92,68 @@ saveit (int instatus, char *inkey, int inkeylen, char *inval, return 0; } +static int +dosearch (int instatus, char *inkey, int inkeylen, char *inval, + int invallen, char *indata) +{ + struct search_t *req = (struct search_t *) indata; + + if (instatus != YP_TRUE) + return 1; + + if (inkey && inkeylen > 0 && inval && invallen > 0) + { + struct parser_data *pdata = (void *) req->buffer; + int parse_res; + char *p; + + if ((size_t) (invallen + 1) > req->buflen) + { + *req->errnop = ERANGE; + req->status = NSS_STATUS_TRYAGAIN; + return 1; + } + + p = strncpy (req->buffer, inval, invallen); + req->buffer[invallen] = '\0'; + while (isspace (*p)) + ++p; + + parse_res = _nss_files_parse_servent (p, req->serv, pdata, req->buflen, + req->errnop); + if (parse_res == -1) + { + req->status = NSS_STATUS_TRYAGAIN; + return 1; + } + + if (!parse_res) + return 0; + + if (req->proto != NULL && strcmp (req->serv->s_proto, req->proto) != 0) + return 0; + + if (req->port != -1 && req->serv->s_port != req->port) + return 0; + + if (req->name != NULL && strcmp (req->serv->s_name, req->name) != 0) + { + char **cp; + for (cp = req->serv->s_aliases; *cp; cp++) + if (strcmp (req->name, *cp) == 0) + break; + + if (*cp == NULL) + return 0; + } + + req->status = NSS_STATUS_SUCCESS; + return 1; + } + + return 0; +} + static enum nss_status internal_nis_endservent (intern_t * intern) { @@ -126,6 +200,7 @@ internal_nis_setservent (intern_t *intern) return status; } + enum nss_status _nss_nis_setservent (int stayopen) { @@ -191,9 +266,8 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol, struct servent *serv, char *buffer, size_t buflen, int *errnop) { - intern_t data = { NULL, NULL }; enum nss_status status; - int found; + char *domain; if (name == NULL) { @@ -201,19 +275,18 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol, return NSS_STATUS_UNAVAIL; } + if (yp_get_default_domain (&domain)) + return NSS_STATUS_UNAVAIL; + /* If the protocol is given, we could try if our NIS server knows about services.byservicename map. If yes, we only need one query */ if (protocol != NULL) { char key[strlen (name) + strlen (protocol) + 2]; - char *cp, *domain, *result; + char *cp, *result; size_t keylen, len; int int_len; - /* If this fails, the other solution will also fail. */ - if (yp_get_default_domain (&domain)) - return NSS_STATUS_UNAVAIL; - /* key is: "name/protocol" */ cp = stpcpy (key, name); *cp++ = '/'; @@ -257,34 +330,25 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol, } } - status = internal_nis_setservent (&data); + struct ypall_callback ypcb; + struct search_t req; + + ypcb.foreach = dosearch; + ypcb.data = (char *) &req; + req.name = name; + req.proto = protocol; + req.port = -1; + req.serv = serv; + req.buffer = buffer; + req.buflen = buflen; + req.errnop = errnop; + req.status = NSS_STATUS_NOTFOUND; + status = yperr2nss (yp_all (domain, "services.byservicename", &ypcb)); + if (status != NSS_STATUS_SUCCESS) return status; - found = 0; - while (!found && - ((status = internal_nis_getservent_r (serv, buffer, buflen, errnop, - &data)) == NSS_STATUS_SUCCESS)) - { - if (protocol == NULL || strcmp (serv->s_proto, protocol) == 0) - { - char **cp; - - if (strcmp (serv->s_name, name) == 0) - found = 1; - else - for (cp = serv->s_aliases; *cp; cp++) - if (strcmp (name, *cp) == 0) - found = 1; - } - } - - internal_nis_endservent (&data); - - if (!found && status == NSS_STATUS_SUCCESS) - return NSS_STATUS_NOTFOUND; - else - return status; + return req.status; } enum nss_status @@ -292,22 +356,20 @@ _nss_nis_getservbyport_r (int port, const char *protocol, struct servent *serv, char *buffer, size_t buflen, int *errnop) { - intern_t data = { NULL, NULL }; enum nss_status status; - int found; + char *domain; + + if (yp_get_default_domain (&domain)) + return NSS_STATUS_UNAVAIL; /* If the protocol is given, we only need one query */ if (protocol != NULL) { char key[100 + strlen (protocol) + 2]; - char *domain, *result; + char *result; size_t keylen, len; int int_len; - /* If this fails, the other solution will also fail. */ - if (yp_get_default_domain (&domain)) - return NSS_STATUS_UNAVAIL; - /* key is: "port/protocol" */ keylen = snprintf (key, sizeof (key), "%d/%s", port, protocol); status = yperr2nss (yp_match (domain, "services.byname", key, @@ -348,22 +410,26 @@ _nss_nis_getservbyport_r (int port, const char *protocol, } } - status = internal_nis_setservent (&data); - if (status != NSS_STATUS_SUCCESS) - return status; - - found = 0; - while (!found && - ((status = internal_nis_getservent_r (serv, buffer, buflen, errnop, - &data)) == NSS_STATUS_SUCCESS)) - if (serv->s_port == port && - (protocol == NULL || strcmp (serv->s_proto, protocol) == 0)) - found = 1; + if (port == -1) + return NSS_STATUS_NOTFOUND; - internal_nis_endservent (&data); + struct ypall_callback ypcb; + struct search_t req; + + ypcb.foreach = dosearch; + ypcb.data = (char *) &req; + req.name = NULL; + req.proto = protocol; + req.port = port; + req.serv = serv; + req.buffer = buffer; + req.buflen = buflen; + req.errnop = errnop; + req.status = NSS_STATUS_NOTFOUND; + status = yperr2nss (yp_all (domain, "services.byname", &ypcb)); - if (!found && status == NSS_STATUS_SUCCESS) - return NSS_STATUS_NOTFOUND; - else + if (status != NSS_STATUS_SUCCESS) return status; + + return req.status; } |