diff options
Diffstat (limited to 'REORG.TODO/nis/nss_nisplus/nisplus-parser.c')
| -rw-r--r-- | REORG.TODO/nis/nss_nisplus/nisplus-parser.c | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/REORG.TODO/nis/nss_nisplus/nisplus-parser.c b/REORG.TODO/nis/nss_nisplus/nisplus-parser.c new file mode 100644 index 0000000000..64170ddc1a --- /dev/null +++ b/REORG.TODO/nis/nss_nisplus/nisplus-parser.c @@ -0,0 +1,375 @@ +/* Copyright (C) 1997-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 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 <pwd.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <rpcsvc/nis.h> + +#include "nisplus-parser.h" + +#define NISENTRYVAL(idx, col, res) \ + (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val) + +#define NISENTRYLEN(idx, col, res) \ + (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len) + +#define NISOBJVAL(col, obj) \ + ((obj)->EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val) + +#define NISOBJLEN(col, obj) \ + ((obj)->EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len) + + +int +_nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw, + char *buffer, size_t buflen, int *errnop) +{ + if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) + || NIS_RES_NUMOBJ (result) != 1 + || __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ + || strcmp (NIS_RES_OBJECT (result)->EN_data.en_type, "passwd_tbl") != 0 + || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 7) + return 0; + + nis_object *obj = NIS_RES_OBJECT (result); + char *first_unused = buffer; + size_t room_left = buflen; + size_t len; + + if (NISOBJLEN (0, obj) >= room_left) + { + /* The line is too long for our buffer. */ + no_more_room: + *errnop = ERANGE; + return -1; + } + + strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj)); + first_unused[NISOBJLEN (0, obj)] = '\0'; + len = strlen (first_unused); + if (len == 0) /* No name ? Should never happen, database is corrupt */ + return 0; + pw->pw_name = first_unused; + room_left -= len + 1; + first_unused += len + 1; + + if (NISOBJLEN (1, obj) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj)); + first_unused[NISOBJLEN (1, obj)] = '\0'; + pw->pw_passwd = first_unused; + len = strlen (first_unused); + room_left -= len + 1; + first_unused += len + 1; + + char *numstr = NISOBJVAL (2, obj); + len = NISOBJLEN (2, obj); + if (len == 0 && numstr[len - 1] != '\0') + { + if (len >= room_left) + goto no_more_room; + + strncpy (first_unused, numstr, len); + first_unused[len] = '\0'; + numstr = first_unused; + } + if (numstr[0] == '\0') + /* If we don't have a uid, it's an invalid shadow entry. */ + return 0; + pw->pw_uid = strtoul (numstr, NULL, 10); + + numstr = NISOBJVAL (3, obj); + len = NISOBJLEN (3, obj); + if (len == 0 && numstr[len - 1] != '\0') + { + if (len >= room_left) + goto no_more_room; + + strncpy (first_unused, numstr, len); + first_unused[len] = '\0'; + numstr = first_unused; + } + if (numstr[0] == '\0') + /* If we don't have a gid, it's an invalid shadow entry. */ + return 0; + pw->pw_gid = strtoul (numstr, NULL, 10); + + if (NISOBJLEN(4, obj) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISOBJVAL (4, obj), NISOBJLEN (4, obj)); + first_unused[NISOBJLEN (4, obj)] = '\0'; + pw->pw_gecos = first_unused; + len = strlen (first_unused); + room_left -= len + 1; + first_unused += len + 1; + + if (NISOBJLEN (5, obj) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISOBJVAL (5, obj), NISOBJLEN (5, obj)); + first_unused[NISOBJLEN (5, obj)] = '\0'; + pw->pw_dir = first_unused; + len = strlen (first_unused); + room_left -= len + 1; + first_unused += len + 1; + + if (NISOBJLEN (6, obj) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISOBJVAL (6, obj), NISOBJLEN (6, obj)); + first_unused[NISOBJLEN (6, obj)] = '\0'; + pw->pw_shell = first_unused; + len = strlen (first_unused); + room_left -= len + 1; + first_unused += len + 1; + + return 1; +} + + +int +_nss_nisplus_parse_grent (nis_result *result, struct group *gr, + char *buffer, size_t buflen, int *errnop) +{ + if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) + || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ + || strcmp (NIS_RES_OBJECT (result)[0].EN_data.en_type, "group_tbl") != 0 + || NIS_RES_OBJECT (result)[0].EN_data.en_cols.en_cols_len < 4) + return 0; + + nis_object *obj = NIS_RES_OBJECT (result); + char *first_unused = buffer; + size_t room_left = buflen; + char *line; + int count; + size_t len; + + if (NISOBJLEN (0, obj) >= room_left) + { + /* The line is too long for our buffer. */ + no_more_room: + *errnop = ERANGE; + return -1; + } + + strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj)); + first_unused[NISOBJLEN (0, obj)] = '\0'; + len = strlen (first_unused); + if (len == 0) /* group table is corrupt */ + return 0; + gr->gr_name = first_unused; + room_left -= len + 1; + first_unused += len + 1; + + if (NISOBJLEN (1, obj) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj)); + first_unused[NISOBJLEN (1, obj)] = '\0'; + gr->gr_passwd = first_unused; + len = strlen (first_unused); + room_left -= len + 1; + first_unused += len + 1; + + char *numstr = NISOBJVAL (2, obj); + len = NISOBJLEN (2, obj); + if (len == 0 || numstr[len - 1] != '\0') + { + if (len >= room_left) + goto no_more_room; + + strncpy (first_unused, numstr, len); + first_unused[len] = '\0'; + numstr = first_unused; + } + if (numstr[0] == '\0') + /* We should always have a gid. */ + return 0; + gr->gr_gid = strtoul (numstr, NULL, 10); + + if (NISOBJLEN (3, obj) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISOBJVAL (3, obj), NISOBJLEN (3, obj)); + first_unused[NISOBJLEN (3, obj)] = '\0'; + line = first_unused; + len = strlen (line); + room_left -= len + 1; + first_unused += len + 1; + /* Adjust the pointer so it is aligned for + storing pointers. */ + size_t adjust = ((__alignof__ (char *) + - (first_unused - (char *) 0) % __alignof__ (char *)) + % __alignof__ (char *)); + if (room_left < adjust) + goto no_more_room; + first_unused += adjust; + room_left -= adjust; + gr->gr_mem = (char **) first_unused; + + count = 0; + while (*line != '\0') + { + /* Skip leading blanks. */ + while (isspace (*line)) + ++line; + + if (*line == '\0') + break; + + if (room_left < sizeof (char *)) + goto no_more_room; + room_left -= sizeof (char *); + gr->gr_mem[count++] = line; + + while (*line != '\0' && *line != ',' && !isspace (*line)) + ++line; + + if (*line == ',' || isspace (*line)) + { + int is = isspace (*line); + + *line++ = '\0'; + if (is) + while (*line != '\0' && (*line == ',' || isspace (*line))) + ++line; + } + } + if (room_left < sizeof (char *)) + goto no_more_room; + room_left -= sizeof (char *); + gr->gr_mem[count] = NULL; + + return 1; +} + + +int +_nss_nisplus_parse_spent (nis_result *result, struct spwd *sp, + char *buffer, size_t buflen, int *errnop) +{ + char *first_unused = buffer; + size_t room_left = buflen; + size_t len; + + if (result == NULL) + return 0; + + if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) + || NIS_RES_NUMOBJ (result) != 1 + || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ + || strcmp (NIS_RES_OBJECT (result)->EN_data.en_type, "passwd_tbl") != 0 + || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 8) + return 0; + + if (NISENTRYLEN (0, 0, result) >= room_left) + { + /* The line is too long for our buffer. */ + no_more_room: + *errnop = ERANGE; + return -1; + } + + strncpy (first_unused, NISENTRYVAL (0, 0, result), + NISENTRYLEN (0, 0, result)); + first_unused[NISENTRYLEN (0, 0, result)] = '\0'; + len = strlen (first_unused); + if (len == 0) + return 0; + sp->sp_namp = first_unused; + room_left -= len + 1; + first_unused += len + 1; + + if (NISENTRYLEN (0, 1, result) >= room_left) + goto no_more_room; + + strncpy (first_unused, NISENTRYVAL (0, 1, result), + NISENTRYLEN (0, 1, result)); + first_unused[NISENTRYLEN (0, 1, result)] = '\0'; + sp->sp_pwdp = first_unused; + len = strlen (first_unused); + room_left -= len + 1; + first_unused += len + 1; + + sp->sp_lstchg = sp->sp_min = sp->sp_max = sp->sp_warn = sp->sp_inact = + sp->sp_expire = -1; + sp->sp_flag = ~0ul; + + if (NISENTRYLEN (0, 7, result) > 0) + { + char *line = NISENTRYVAL (0, 7, result); + char *cp = strchr (line, ':'); + if (cp == NULL) + return 1; + *cp++ = '\0'; + if (*line) + sp->sp_lstchg = atol (line); + + line = cp; + cp = strchr (line, ':'); + if (cp == NULL) + return 1; + *cp++ = '\0'; + if (*line) + sp->sp_min = atol (line); + + line = cp; + cp = strchr (line, ':'); + if (cp == NULL) + return 1; + *cp++ = '\0'; + if (*line) + sp->sp_max = atol (line); + + line = cp; + cp = strchr (line, ':'); + if (cp == NULL) + return 1; + *cp++ = '\0'; + if (*line) + sp->sp_warn = atol (line); + + line = cp; + cp = strchr (line, ':'); + if (cp == NULL) + return 1; + *cp++ = '\0'; + if (*line) + sp->sp_inact = atol (line); + + line = cp; + cp = strchr (line, ':'); + if (cp == NULL) + return 1; + *cp++ = '\0'; + if (*line) + sp->sp_expire = atol (line); + + line = cp; + if (line == NULL) + return 1; + if (*line) + sp->sp_flag = atol (line); + } + + return 1; +} |