diff options
Diffstat (limited to 'nis/nis_table.c')
| -rw-r--r-- | nis/nis_table.c | 263 |
1 files changed, 114 insertions, 149 deletions
diff --git a/nis/nis_table.c b/nis/nis_table.c index 70d2b80fbc..ed4b3740dd 100644 --- a/nis/nis_table.c +++ b/nis/nis_table.c @@ -23,138 +23,89 @@ #include "nis_xdr.h" #include "nis_intern.h" -static void -splitname (const_nis_name name, nis_name *ibr_name, int *srch_len, - nis_attr **srch_val) + +static struct ib_request * +__create_ib_request (const_nis_name name, u_long flags) { - char *cptr, *key, *val, *next; - int size; + struct ib_request *ibreq = calloc (1, sizeof (ib_request)); + char buf[strlen (name) + 1]; + nis_attr *search_val = NULL; + int search_len = 0; + char *cptr; + size_t size = 0; - if (name == NULL) - return; + ibreq->ibr_flags = flags; - cptr = strdup (name); - if (srch_len) - *srch_len = 0; - if (srch_val) - *srch_val = NULL; - size = 0; + cptr = strcpy (buf, name); /* Not of "[key=value,key=value,...],foo.." format? */ if (cptr[0] != '[') { - *ibr_name = cptr; - return; + ibreq->ibr_name = strdup (cptr); + return ibreq; } - *ibr_name = strchr (cptr, ']'); - if (*ibr_name == NULL || (*ibr_name)[1] != ',') - { - free (cptr); - *ibr_name = NULL; - return; - } + /* "[key=value,...],foo" format */ + ibreq->ibr_name = strchr (cptr, ']'); + if (ibreq->ibr_name == NULL || ibreq->ibr_name[1] != ',') + return NULL; - *ibr_name[0] = '\0'; - *ibr_name += 2; - *ibr_name = strdup (*ibr_name); + /* Check if we have an entry of "[key=value,],bar". If, remove the "," */ + if (ibreq->ibr_name[-1] == ',') + ibreq->ibr_name[-1] = '\0'; + else + ibreq->ibr_name[0] = '\0'; + ibreq->ibr_name += 2; + ibreq->ibr_name = strdup (ibreq->ibr_name); - if (srch_len == NULL || srch_val == NULL) - { - free (cptr); - return; - } + ++cptr; /* Remove "[" */ - key = (cptr) + 1; - do + while (cptr != NULL && cptr[0] != '\0') { - next = strchr (key, ','); - if (next) - { - next[0] = '\0'; - ++next; - } + char *key = cptr; + char *val = strchr (cptr, '='); + + cptr = strchr (key, ','); + if (cptr != NULL) + *cptr++ = '\0'; - val = strchr (key, '='); if (!val) { - free (cptr); - *srch_val = malloc (sizeof (nis_attr)); - if (*srch_val == NULL) - { - free (cptr); - free (*ibr_name); - *ibr_name = NULL; - return; - } - (*srch_val)[0].zattr_val.zattr_val_len = 0; - (*srch_val)[0].zattr_val.zattr_val_val = NULL; - return; + nis_free_request (ibreq); + return NULL; } - - val[0] = '\0'; - ++val; - - if ((*srch_len) + 1 >= size) - { - size += 10; - if (size == 10) - *srch_val = malloc (size * sizeof (char *)); - else - *srch_val = realloc (val, size * sizeof (char *)); - if (*srch_val == NULL) + *val++ = '\0'; + if ((search_len + 1) >= size) + { + size += 1; + if (size == 1) + search_val = malloc (size * sizeof (nis_attr)); + else + search_val = realloc (search_val, size * sizeof (nis_attr)); + if (search_val == NULL) { - free (cptr); - free (*ibr_name); - *ibr_name = NULL; - return; + nis_free_request (ibreq); + return NULL; } } - - (*srch_val)[*srch_len].zattr_ndx = strdup (key); - if (((*srch_val)[*srch_len].zattr_ndx) == NULL) - { - free (cptr); - free (*ibr_name); - *ibr_name = NULL; - return; - } - (*srch_val)[*srch_len].zattr_val.zattr_val_len = strlen (val) + 1; - (*srch_val)[*srch_len].zattr_val.zattr_val_val = strdup (val); - if ((*srch_val)[*srch_len].zattr_val.zattr_val_val == NULL) - { - free (cptr); - free (*ibr_name); - *ibr_name = NULL; - return; - } - ++(*srch_len); - - key = next; - + search_val[search_len].zattr_ndx = strdup (key); + if ((search_val[search_len].zattr_ndx) == NULL) + { + nis_free_request (ibreq); + return NULL; + } + search_val[search_len].zattr_val.zattr_val_len = strlen (val) + 1; + search_val[search_len].zattr_val.zattr_val_val = strdup (val); + if (search_val[search_len].zattr_val.zattr_val_val == NULL) + { + nis_free_request (ibreq); + return NULL; + } + ++search_len; } - while (next); - - free (cptr); -} -static struct ib_request * -__create_ib_request (const_nis_name name, struct ib_request *ibreq, - u_long flags) -{ - splitname (name, &ibreq->ibr_name, &ibreq->ibr_srch.ibr_srch_len, - &ibreq->ibr_srch.ibr_srch_val); - if (ibreq->ibr_name == NULL) - return NULL; - - ibreq->ibr_flags = flags; - ibreq->ibr_obj.ibr_obj_len = 0; - ibreq->ibr_obj.ibr_obj_val = NULL; - ibreq->ibr_cbhost.ibr_cbhost_len = 0; - ibreq->ibr_cbhost.ibr_cbhost_val = NULL; - ibreq->ibr_bufsize = 0; - ibreq->ibr_cookie.n_len = 0; - ibreq->ibr_cookie.n_bytes = NULL; + ibreq->ibr_srch.ibr_srch_val = search_val; + ibreq->ibr_srch.ibr_srch_len = search_len; return ibreq; } @@ -167,7 +118,7 @@ nis_list (const_nis_name name, u_long flags, const void *userdata) { nis_result *res = NULL; - ib_request *ibreq = calloc (1, sizeof (ib_request)); + ib_request *ibreq; int status; int count_links = 0; /* We will only follow NIS_MAXLINKS links! */ int done = 0; @@ -180,13 +131,20 @@ nis_list (const_nis_name name, u_long flags, if (res == NULL) return NULL; - if (__create_ib_request (name, ibreq, flags) == NULL) + if (name == NULL) + { + NIS_RES_STATUS (res) = NIS_BADNAME; + return res; + } + + if ((ibreq = __create_ib_request (name, flags)) == NULL) { NIS_RES_STATUS (res) = NIS_BADNAME; return res; } - if (flags & EXPAND_NAME) + if ((flags & EXPAND_NAME) && + ibreq->ibr_name[strlen (ibreq->ibr_name) - 1] != '.') { names = nis_getnames (ibreq->ibr_name); free (ibreq->ibr_name); @@ -210,23 +168,23 @@ nis_list (const_nis_name name, u_long flags, { nis_result *lres; u_long newflags = flags & ~FOLLOW_PATH & ~ALL_RESULTS; - char table_path[NIS_MAXPATH + 1]; + char table_path[NIS_MAXPATH + 3]; char *ntable, *p; u_long done = 0, failures = 0; while (names[name_nr] != NULL && !done) { - lres = nis_lookup (names[name_nr], newflags); + lres = nis_lookup (names[name_nr], newflags | NO_AUTHINFO); if (lres == NULL || NIS_RES_STATUS (lres) != NIS_SUCCESS) { NIS_RES_STATUS (res) = NIS_RES_STATUS (lres); nis_freeresult (lres); ++name_nr; continue; - } + } /* nis_lookup handles FOLLOW_LINKS, - so we must have a table object. */ + so we must have a table object.*/ if (__type_of (NIS_RES_OBJECT (lres)) != NIS_TABLE_OBJ) { nis_freeresult (lres); @@ -235,8 +193,11 @@ nis_list (const_nis_name name, u_long flags, } /* Save the path, discard everything else. */ - snprintf (table_path, NIS_MAXPATH, "%s:%s", names[name_nr], - NIS_RES_OBJECT (lres)->TA_data.ta_path); + p = __stpncpy (table_path, names[name_nr], NIS_MAXPATH); + *p++ = ':'; + p = __stpncpy (p, NIS_RES_OBJECT (lres)->TA_data.ta_path, + NIS_MAXPATH - (p - table_path)); + *p = '\0'; nis_freeresult (lres); free (res); res = NULL; @@ -397,21 +358,22 @@ nis_add_entry (const_nis_name name, const nis_object *obj2, u_long flags) nis_object obj; nis_result *res; nis_error status; - ib_request *ibreq = calloc (1, sizeof (ib_request)); - char buf1[strlen (name) + 20]; - char buf4[strlen (name) + 20]; + ib_request *ibreq; + size_t namelen = strlen (name); + char buf1[namelen + 20]; + char buf4[namelen + 20]; res = calloc (1, sizeof (nis_result)); if (res == NULL) return NULL; - if (ibreq == NULL) + if (name == NULL) { - NIS_RES_STATUS (res) = NIS_NOMEMORY; + NIS_RES_STATUS (res) = NIS_BADNAME; return res; } - if (__create_ib_request (name, ibreq, flags) == NULL) + if ((ibreq = __create_ib_request (name, flags)) == NULL) { NIS_RES_STATUS (res) = NIS_BADNAME; return res; @@ -456,13 +418,16 @@ nis_modify_entry (const_nis_name name, const nis_object *obj2, u_long flags) nis_object obj; nis_result *res; nis_error status; - ib_request *ibreq = calloc (1, sizeof (ib_request)); - char buf1[strlen (name) + 20]; - char buf4[strlen (name) + 20]; + ib_request *ibreq; + size_t namelen = strlen (name); + char buf1[namelen + 20]; + char buf4[namelen + 20]; res = calloc (1, sizeof (nis_result)); + if (res == NULL) + return NULL; - if (__create_ib_request (name, ibreq, flags) == NULL) + if (( ibreq =__create_ib_request (name, flags)) == NULL) { NIS_RES_STATUS (res) = NIS_BADNAME; return res; @@ -505,20 +470,20 @@ nis_remove_entry (const_nis_name name, const nis_object *obj, u_long flags) { nis_result *res; - ib_request *ibreq = calloc (1, sizeof (ib_request)); + ib_request *ibreq; nis_error status; res = calloc (1, sizeof (nis_result)); if (res == NULL) return NULL; - if (ibreq == NULL) + if (name == NULL) { - NIS_RES_STATUS (res) = NIS_NOMEMORY; + NIS_RES_STATUS (res) = NIS_BADNAME; return res; } - if (__create_ib_request (name, ibreq, flags) == NULL) + if ((ibreq =__create_ib_request (name, flags)) == NULL) { NIS_RES_STATUS (res) = NIS_BADNAME; return res; @@ -550,20 +515,20 @@ nis_result * nis_first_entry (const_nis_name name) { nis_result *res; - ib_request *ibreq = calloc (1, sizeof (ib_request)); + ib_request *ibreq; nis_error status; res = calloc (1, sizeof (nis_result)); if (res == NULL) return NULL; - if (ibreq == NULL) + if (name == NULL) { - NIS_RES_STATUS (res) = NIS_NOMEMORY; + NIS_RES_STATUS (res) = NIS_BADNAME; return res; } - if (__create_ib_request (name, ibreq, 0) == NULL) + if ((ibreq =__create_ib_request (name, 0)) == NULL) { NIS_RES_STATUS (res) = NIS_BADNAME; return res; @@ -584,20 +549,20 @@ nis_result * nis_next_entry (const_nis_name name, const netobj *cookie) { nis_result *res; - ib_request *ibreq = calloc (1, sizeof (ib_request)); + ib_request *ibreq; nis_error status; res = calloc (1, sizeof (nis_result)); if (res == NULL) return NULL; - if (ibreq == NULL) + if (name == NULL) { - NIS_RES_STATUS (res) = NIS_NOMEMORY; + NIS_RES_STATUS (res) = NIS_BADNAME; return res; } - if (__create_ib_request (name, ibreq, 0) == NULL) + if (( ibreq =__create_ib_request (name, 0)) == NULL) { NIS_RES_STATUS (res) = NIS_BADNAME; return res; @@ -605,14 +570,7 @@ nis_next_entry (const_nis_name name, const netobj *cookie) if (cookie != NULL) { - ibreq->ibr_cookie.n_bytes = malloc (cookie->n_len); - if (ibreq->ibr_cookie.n_bytes == NULL) - { - NIS_RES_STATUS (res) = NIS_NOMEMORY; - nis_free_request (ibreq); - return res; - } - memcpy (ibreq->ibr_cookie.n_bytes, cookie->n_bytes, cookie->n_len); + ibreq->ibr_cookie.n_bytes = cookie->n_bytes; ibreq->ibr_cookie.n_len = cookie->n_len; } @@ -622,6 +580,13 @@ nis_next_entry (const_nis_name name, const netobj *cookie) (caddr_t) res, 0, NULL)) != NIS_SUCCESS) NIS_RES_STATUS (res) = status; + if (cookie != NULL) + { + /* Don't give cookie free, it is not from us */ + ibreq->ibr_cookie.n_bytes = NULL; + ibreq->ibr_cookie.n_len = 0; + } + nis_free_request (ibreq); return res; |