mirror of
https://github.com/servalproject/serval-dna.git
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254 lines
5.6 KiB
C
254 lines
5.6 KiB
C
/*
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Serval Distributed Numbering Architecture (DNA)
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Copyright (C) 2010 Paul Gardner-Stephen
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <ctype.h>
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#include "serval.h"
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#include "rhizome.h"
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#include "str.h"
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#include "dataformats.h"
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int cmp_sid_t(const sid_t *a, const sid_t *b)
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{
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return memcmp(a, b, sizeof a->binary);
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}
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int str_to_sid_t(sid_t *sid, const char *hex) {
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if (strcmp(hex, "broadcast") == 0) {
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*sid = SID_BROADCAST;
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return 0;
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}
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return fromhexstr(sid->binary, hex, sizeof sid->binary);
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}
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int strn_to_sid_t(sid_t *sid, const char *hex, const char **endp)
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{
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if (str_startswith(hex, "broadcast", endp) == 0) {
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*sid = SID_BROADCAST;
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return 0;
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}
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sid_t tmp;
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int n = fromhex(tmp.binary, hex, sizeof tmp.binary);
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if (n != sizeof tmp.binary)
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return -1;
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*sid = tmp;
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if (endp)
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*endp = hex + sizeof sid->binary * 2;
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return 0;
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}
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int str_is_subscriber_id(const char *sid)
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{
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size_t len = 0;
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return strn_is_subscriber_id(sid, &len) && sid[len] == '\0';
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}
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int strn_is_subscriber_id(const char *sid, size_t *lenp)
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{
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if (strncasecmp(sid, "broadcast", 9) == 0) {
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if (lenp)
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*lenp = 9;
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return 1;
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}
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if (is_xsubstring(sid, SID_STRLEN)) {
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if (lenp)
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*lenp = SID_STRLEN;
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return 1;
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}
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return 0;
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}
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int cmp_rhizome_bid_t(const rhizome_bid_t *a, const rhizome_bid_t *b)
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{
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return memcmp(a, b, sizeof a->binary);
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}
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int str_to_rhizome_bid_t(rhizome_bid_t *bid, const char *hex)
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{
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return fromhexstr(bid->binary, hex, sizeof bid->binary);
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}
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int strn_to_rhizome_bid_t(rhizome_bid_t *bid, const char *hex, const char **endp)
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{
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rhizome_bid_t tmp;
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int n = fromhex(tmp.binary, hex, sizeof tmp.binary);
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if (n != sizeof tmp.binary)
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return -1;
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*bid = tmp;
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if (endp)
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*endp = hex + sizeof bid->binary * 2;
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return 0;
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}
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int cmp_rhizome_filehash_t(const rhizome_filehash_t *a, const rhizome_filehash_t *b)
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{
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return memcmp(a, b, sizeof a->binary);
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}
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int str_to_rhizome_filehash_t(rhizome_filehash_t *hashp, const char *hex)
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{
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return fromhexstr(hashp->binary, hex, sizeof hashp->binary);
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}
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int strn_to_rhizome_filehash_t(rhizome_filehash_t *hashp, const char *hex, const char **endp)
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{
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rhizome_filehash_t tmp;
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int n = fromhex(tmp.binary, hex, sizeof tmp.binary);
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if (n != sizeof tmp.binary)
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return -1;
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*hashp = tmp;
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if (endp)
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*endp = hex + sizeof hashp->binary * 2;
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return 0;
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}
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int str_to_rhizome_bk_t(rhizome_bk_t *bkp, const char *hex)
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{
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return fromhexstr(bkp->binary, hex, sizeof bkp->binary);
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}
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int rhizome_strn_is_manifest_id(const char *id)
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{
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return is_xsubstring(id, RHIZOME_MANIFEST_ID_STRLEN);
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}
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int rhizome_str_is_manifest_id(const char *id)
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{
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return is_xstring(id, RHIZOME_MANIFEST_ID_STRLEN);
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}
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int rhizome_strn_is_bundle_key(const char *key)
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{
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return is_xsubstring(key, RHIZOME_BUNDLE_KEY_STRLEN);
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}
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int rhizome_str_is_bundle_key(const char *key)
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{
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return is_xstring(key, RHIZOME_BUNDLE_KEY_STRLEN);
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}
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int rhizome_strn_is_bundle_crypt_key(const char *key)
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{
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return is_xsubstring(key, RHIZOME_CRYPT_KEY_STRLEN);
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}
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int rhizome_str_is_bundle_crypt_key(const char *key)
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{
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return is_xstring(key, RHIZOME_CRYPT_KEY_STRLEN);
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}
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int rhizome_strn_is_file_hash(const char *hash)
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{
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return is_xsubstring(hash, RHIZOME_FILEHASH_STRLEN);
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}
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int rhizome_str_is_file_hash(const char *hash)
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{
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return is_xstring(hash, RHIZOME_FILEHASH_STRLEN);
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}
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int rhizome_str_is_manifest_service(const char *text)
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{
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if (text[0] == '\0')
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return 0;
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while (*text && (isalnum(*text) || *text == '_' || *text == '.'))
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++text;
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return *text == '\0';
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}
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/* A name cannot contain a LF because that is the Rhizome text manifest field terminator. For the
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* time being, CR is not allowed either, because the Rhizome field terminator includes an optional
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* CR. See rhizome_manifest_parse().
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*
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* @author Andrew Bettison <andrew@servalproject.com>
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*/
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int rhizome_str_is_manifest_name(const char *text)
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{
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while (*text && *text != '\n' && *text != '\r')
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++text;
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return *text == '\0';
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}
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int str_is_did(const char *did)
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{
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size_t len = 0;
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return strn_is_did(did, &len) && did[len] == '\0';
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}
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int is_didchar(char c)
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{
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return isdigit(c) || c == '*' || c == '#' || c == '+';
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}
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int strn_is_did(const char *did, size_t *lenp)
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{
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int i;
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for (i = 0; i < DID_MAXSIZE && is_didchar(did[i]); ++i)
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;
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if (i < DID_MINSIZE)
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return 0;
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if (lenp)
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*lenp = i;
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return 1;
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}
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void write_uint64(unsigned char *o,uint64_t v)
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{
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int i;
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for(i=0;i<8;i++)
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{ *(o++)=v&0xff; v=v>>8; }
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}
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void write_uint32(unsigned char *o,uint32_t v)
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{
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int i;
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for(i=0;i<4;i++)
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{ *(o++)=v&0xff; v=v>>8; }
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}
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void write_uint16(unsigned char *o,uint16_t v)
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{
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int i;
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for(i=0;i<2;i++)
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{ *(o++)=v&0xff; v=v>>8; }
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}
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uint64_t read_uint64(const unsigned char *o)
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{
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int i;
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uint64_t v=0;
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for(i=0;i<8;i++) v=(v<<8)|o[8-1-i];
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return v;
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}
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uint32_t read_uint32(const unsigned char *o)
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{
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int i;
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uint32_t v=0;
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for(i=0;i<4;i++) v=(v<<8)|o[4-1-i];
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return v;
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}
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uint16_t read_uint16(const unsigned char *o)
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{
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int i;
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uint16_t v=0;
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for(i=0;i<2;i++) v=(v<<8)|o[2-1-i];
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return v;
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}
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