diff options
Diffstat (limited to 'REORG.TODO/hesiod/nss_hesiod/hesiod-service.c')
| -rw-r--r-- | REORG.TODO/hesiod/nss_hesiod/hesiod-service.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/REORG.TODO/hesiod/nss_hesiod/hesiod-service.c b/REORG.TODO/hesiod/nss_hesiod/hesiod-service.c new file mode 100644 index 0000000000..1942188517 --- /dev/null +++ b/REORG.TODO/hesiod/nss_hesiod/hesiod-service.c @@ -0,0 +1,145 @@ +/* Copyright (C) 1997-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <hesiod.h> +#include <netdb.h> +#include <netinet/in.h> +#include <nss.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/* Hesiod uses a format for service entries that differs from the + traditional format. We therefore declare our own parser. */ + +#define ENTNAME servent + +struct servent_data {}; + +#define TRAILING_LIST_MEMBER s_aliases +#define TRAILING_LIST_SEPARATOR_P isspace +#include <nss/nss_files/files-parse.c> +#define ISSC_OR_SPACE(c) ((c) == ';' || isspace (c)) +LINE_PARSER +("#", + STRING_FIELD (result->s_name, ISSC_OR_SPACE, 1); + STRING_FIELD (result->s_proto, ISSC_OR_SPACE, 1); + INT_FIELD (result->s_port, ISSC_OR_SPACE, 10, 0, htons); + ) + +enum nss_status +_nss_hesiod_setservent (int stayopen) +{ + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_endservent (void) +{ + return NSS_STATUS_SUCCESS; +} + +static enum nss_status +lookup (const char *name, const char *type, const char *protocol, + struct servent *serv, char *buffer, size_t buflen, int *errnop) +{ + struct parser_data *data = (void *) buffer; + size_t linebuflen; + void *context; + char **list, **item; + int parse_res; + int found; + int olderr = errno; + + if (hesiod_init (&context) < 0) + return NSS_STATUS_UNAVAIL; + + list = hesiod_resolve (context, name, type); + if (list == NULL) + { + int err = errno; + hesiod_end (context); + __set_errno (olderr); + return err == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL; + } + + linebuflen = buffer + buflen - data->linebuffer; + + item = list; + found = 0; + do + { + size_t len = strlen (*item) + 1; + + if (linebuflen < len) + { + hesiod_free_list (context, list); + hesiod_end (context); + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } + + memcpy (data->linebuffer, *item, len); + + parse_res = parse_line (buffer, serv, data, buflen, errnop); + if (parse_res == -1) + { + hesiod_free_list (context, list); + hesiod_end (context); + return NSS_STATUS_TRYAGAIN; + } + + if (parse_res > 0) + found = protocol == NULL || strcasecmp (serv->s_proto, protocol) == 0; + + ++item; + } + while (*item != NULL && !found); + + hesiod_free_list (context, list); + hesiod_end (context); + + if (found == 0) + { + __set_errno (olderr); + return NSS_STATUS_NOTFOUND; + } + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_getservbyname_r (const char *name, const char *protocol, + struct servent *serv, + char *buffer, size_t buflen, int *errnop) +{ + return lookup (name, "service", protocol, serv, buffer, buflen, errnop); +} + +enum nss_status +_nss_hesiod_getservbyport_r (const int port, const char *protocol, + struct servent *serv, + char *buffer, size_t buflen, int *errnop) +{ + char portstr[6]; /* Port numbers are restricted to 16 bits. */ + + snprintf (portstr, sizeof portstr, "%d", ntohs (port)); + + return lookup (portstr, "port", protocol, serv, buffer, buflen, errnop); +} |