/*
This file is part of GNUnet.
- (C) 2009, 2010 Christian Grothoff (and other contributing authors)
+ (C) 2009, 2010, 2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
#include "gnunet_signatures.h"
#include "gnunet_arm_service.h"
#include "gnunet_namestore_service.h"
+#include "gnunet_dnsparser_lib.h"
#include "namestore.h"
-#define DEBUG_GNS_API GNUNET_EXTRA_LOGGING
+
#define LOG(kind,...) GNUNET_log_from (kind, "gns-api",__VA_ARGS__)
};
+
+/**
+ * Convert a short hash to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param hc the short hash code
+ * @return string form; will be overwritten by next call to GNUNET_h2s.
+ */
+const char *
+GNUNET_short_h2s (const struct GNUNET_CRYPTO_ShortHashCode * hc)
+{
+ static struct GNUNET_CRYPTO_ShortHashAsciiEncoded ret;
+
+ GNUNET_CRYPTO_short_hash_to_enc (hc, &ret);
+ return (const char *) &ret;
+}
+
+
/**
* Calculate how many bytes we will need to serialize the given
* records.
ret = sizeof (struct NetworkRecord) * rd_count;
for (i=0;i<rd_count;i++)
{
- GNUNET_assert (ret + rd[i].data_size >= ret);
+ GNUNET_assert ((ret + rd[i].data_size) >= ret);
ret += rd[i].data_size;
}
return ret;
* Sign name and records
*
* @param key the private key
+ * @param expire block expiration
* @param name the name
* @param rd record data
* @param rd_count number of records
*/
struct GNUNET_CRYPTO_RsaSignature *
GNUNET_NAMESTORE_create_signature (const struct GNUNET_CRYPTO_RsaPrivateKey *key,
+ struct GNUNET_TIME_Absolute expire,
const char *name,
const struct GNUNET_NAMESTORE_RecordData *rd,
unsigned int rd_count)
{
struct GNUNET_CRYPTO_RsaSignature *sig = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaSignature));
struct GNUNET_CRYPTO_RsaSignaturePurpose *sig_purpose;
+ struct GNUNET_TIME_AbsoluteNBO expire_nbo = GNUNET_TIME_absolute_hton(expire);
size_t rd_ser_len;
size_t name_len;
+
+ struct GNUNET_TIME_AbsoluteNBO *expire_tmp;
char * name_tmp;
char * rd_tmp;
int res;
char rd_ser[rd_ser_len];
GNUNET_NAMESTORE_records_serialize(rd_count, rd, rd_ser_len, rd_ser);
- sig_purpose = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) + rd_ser_len + name_len);
-
+ sig_purpose = GNUNET_malloc(sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) + sizeof (struct GNUNET_TIME_AbsoluteNBO) + rd_ser_len + name_len);
sig_purpose->size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose)+ rd_ser_len + name_len);
sig_purpose->purpose = htonl (GNUNET_SIGNATURE_PURPOSE_GNS_RECORD_SIGN);
- name_tmp = (char *) &sig_purpose[1];
+ expire_tmp = (struct GNUNET_TIME_AbsoluteNBO *) &sig_purpose[1];
+ name_tmp = (char *) &expire_tmp[1];
rd_tmp = &name_tmp[name_len];
+ memcpy (expire_tmp, &expire_nbo, sizeof (struct GNUNET_TIME_AbsoluteNBO));
memcpy (name_tmp, name, name_len);
memcpy (rd_tmp, rd_ser, rd_ser_len);
return sig;
}
-/* end of namestore_api.c */
+/**
+ * Checks if a name is wellformed
+ *
+ * @param name the name to check
+ * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ */
+int
+GNUNET_NAMESTORE_check_name (const char * name)
+{
+ if (name == NULL)
+ return GNUNET_SYSERR;
+ if (strlen (name) > 63)
+ return GNUNET_SYSERR;
+ return GNUNET_OK;
+}
+
+
+/**
+ * Convert the 'value' of a record to a string.
+ *
+ * @param type type of the record
+ * @param data value in binary encoding
+ * @param data_size number of bytes in data
+ * @return NULL on error, otherwise human-readable representation of the value
+ */
+char *
+GNUNET_NAMESTORE_value_to_string (uint32_t type,
+ const void *data,
+ size_t data_size)
+{
+ char tmp[INET6_ADDRSTRLEN];
+ struct GNUNET_CRYPTO_ShortHashAsciiEncoded enc;
+ uint16_t mx_pref;
+ char* result;
+ char* soa_rname;
+ char* soa_mname;
+ uint32_t* soa_data;
+ uint32_t soa_serial;
+ uint32_t soa_refresh;
+ uint32_t soa_retry;
+ uint32_t soa_expire;
+ uint32_t soa_min;
+
+ switch (type)
+ {
+ case 0:
+ return NULL;
+ case GNUNET_DNSPARSER_TYPE_A:
+ if (data_size != sizeof (struct in_addr))
+ return NULL;
+ if (NULL == inet_ntop (AF_INET, data, tmp, sizeof (tmp)))
+ return NULL;
+ return GNUNET_strdup (tmp);
+ case GNUNET_DNSPARSER_TYPE_NS:
+ return GNUNET_strndup (data, data_size);
+ case GNUNET_DNSPARSER_TYPE_CNAME:
+ return GNUNET_strndup (data, data_size);
+ case GNUNET_DNSPARSER_TYPE_SOA:
+ soa_rname = (char*)data;
+ soa_mname = (char*)data+strlen(soa_rname)+1;
+ soa_data = (uint32_t*)(soa_mname+strlen(soa_mname)+1);
+ soa_serial = ntohl(soa_data[0]);
+ soa_refresh = ntohl(soa_data[1]);
+ soa_retry = ntohl(soa_data[2]);
+ soa_expire = ntohl(soa_data[3]);
+ soa_min = ntohl(soa_data[4]);
+ if (GNUNET_asprintf(&result, "rname=%s mname=%s %lu,%lu,%lu,%lu,%lu",
+ soa_rname, soa_mname,
+ soa_serial, soa_refresh, soa_retry, soa_expire, soa_min))
+ return result;
+ else
+ return NULL;
+ case GNUNET_DNSPARSER_TYPE_PTR:
+ return GNUNET_strndup (data, data_size);
+ case GNUNET_DNSPARSER_TYPE_MX:
+ mx_pref = ntohs(*((uint16_t*)data));
+ if (GNUNET_asprintf(&result, "%hu,%s", mx_pref, data+sizeof(uint16_t))
+ != 0)
+ return result;
+ else
+ return NULL;
+ case GNUNET_DNSPARSER_TYPE_TXT:
+ return GNUNET_strndup (data, data_size);
+ case GNUNET_DNSPARSER_TYPE_AAAA:
+ if (data_size != sizeof (struct in6_addr))
+ return NULL;
+ if (NULL == inet_ntop (AF_INET6, data, tmp, sizeof (tmp)))
+ return NULL;
+ return GNUNET_strdup (tmp);
+ case GNUNET_NAMESTORE_TYPE_PKEY:
+ if (data_size != sizeof (struct GNUNET_CRYPTO_ShortHashCode))
+ return NULL;
+ GNUNET_CRYPTO_short_hash_to_enc (data,
+ &enc);
+ return GNUNET_strdup ((const char*) enc.short_encoding);
+ case GNUNET_NAMESTORE_TYPE_PSEU:
+ return GNUNET_strndup (data, data_size);
+ case GNUNET_NAMESTORE_TYPE_LEHO:
+ return GNUNET_strndup (data, data_size);
+ default:
+ GNUNET_break (0);
+ }
+ GNUNET_break (0); // not implemented
+ return NULL;
+}
+
+
+/**
+ * Convert human-readable version of a 'value' of a record to the binary
+ * representation.
+ *
+ * @param type type of the record
+ * @param s human-readable string
+ * @param data set to value in binary encoding (will be allocated)
+ * @param data_size set to number of bytes in data
+ * @return GNUNET_OK on success
+ */
+int
+GNUNET_NAMESTORE_string_to_value (uint32_t type,
+ const char *s,
+ void **data,
+ size_t *data_size)
+{
+ struct in_addr value_a;
+ struct in6_addr value_aaaa;
+ struct GNUNET_CRYPTO_ShortHashCode pkey;
+ uint16_t mx_pref;
+ uint16_t mx_pref_n;
+ uint32_t soa_data[5];
+ char result[253];
+ char soa_rname[63];
+ char soa_mname[63];
+ uint32_t soa_serial;
+ uint32_t soa_refresh;
+ uint32_t soa_retry;
+ uint32_t soa_expire;
+ uint32_t soa_min;
+
+ switch (type)
+ {
+ case 0:
+ return GNUNET_SYSERR;
+ case GNUNET_DNSPARSER_TYPE_A:
+ if (1 != inet_pton (AF_INET, s, &value_a))
+ return GNUNET_SYSERR;
+ *data = GNUNET_malloc (sizeof (struct in_addr));
+ memcpy (*data, &value_a, sizeof (value_a));
+ *data_size = sizeof (value_a);
+ return GNUNET_OK;
+ case GNUNET_DNSPARSER_TYPE_NS:
+ *data = GNUNET_strdup (s);
+ *data_size = strlen (s);
+ return GNUNET_OK;
+ case GNUNET_DNSPARSER_TYPE_CNAME:
+ *data = GNUNET_strdup (s);
+ *data_size = strlen (s);
+ return GNUNET_OK;
+ case GNUNET_DNSPARSER_TYPE_SOA:
+
+ if (SSCANF(s, "rname=%s mname=%s %u,%u,%u,%u,%u",
+ soa_rname, soa_mname,
+ &soa_serial, &soa_refresh, &soa_retry, &soa_expire, &soa_min)
+ != 7)
+ return GNUNET_SYSERR;
+
+ *data_size = sizeof (soa_data)+strlen(soa_rname)+strlen(soa_mname)+2;
+ *data = GNUNET_malloc (*data_size);
+ soa_data[0] = htonl(soa_serial);
+ soa_data[1] = htonl(soa_refresh);
+ soa_data[2] = htonl(soa_retry);
+ soa_data[3] = htonl(soa_expire);
+ soa_data[4] = htonl(soa_min);
+ strcpy(*data, soa_rname);
+ strcpy(*data+strlen(*data)+1, soa_mname);
+ memcpy(*data+strlen(*data)+1+strlen(soa_mname)+1,
+ soa_data, sizeof(soa_data));
+ return GNUNET_OK;
+
+ case GNUNET_DNSPARSER_TYPE_PTR:
+ *data = GNUNET_strdup (s);
+ *data_size = strlen (s);
+ return GNUNET_OK;
+ case GNUNET_DNSPARSER_TYPE_MX:
+ if (SSCANF(s, "%hu,%s", &mx_pref, result) != 2)
+ return GNUNET_SYSERR;
+ *data_size = sizeof (uint16_t)+strlen(result)+1;
+ *data = GNUNET_malloc (*data_size);
+ mx_pref_n = htons(mx_pref);
+ memcpy(*data, &mx_pref_n, sizeof (uint16_t));
+ strcpy((*data)+sizeof (uint16_t), result);
+ return GNUNET_OK;
+ case GNUNET_DNSPARSER_TYPE_TXT:
+ *data = GNUNET_strdup (s);
+ *data_size = strlen (s);
+ return GNUNET_OK;
+ case GNUNET_DNSPARSER_TYPE_AAAA:
+ if (1 != inet_pton (AF_INET6, s, &value_aaaa))
+ return GNUNET_SYSERR;
+ *data = GNUNET_malloc (sizeof (struct in6_addr));
+ *data_size = sizeof (struct in6_addr);
+ memcpy (*data, &value_aaaa, sizeof (value_aaaa));
+ return GNUNET_OK;
+ case GNUNET_NAMESTORE_TYPE_PKEY:
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_short_hash_from_string (s, &pkey))
+ return GNUNET_SYSERR;
+ *data = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_ShortHashCode));
+ memcpy (*data, &pkey, sizeof (pkey));
+ *data_size = sizeof (struct GNUNET_CRYPTO_ShortHashCode);
+ return GNUNET_OK;
+ case GNUNET_NAMESTORE_TYPE_PSEU:
+ *data = GNUNET_strdup (s);
+ *data_size = strlen (s);
+ return GNUNET_OK;
+ case GNUNET_NAMESTORE_TYPE_LEHO:
+ *data = GNUNET_strdup (s);
+ *data_size = strlen (s);
+ return GNUNET_OK;
+ default:
+ GNUNET_break (0);
+ }
+ return GNUNET_SYSERR;
+}
+
+
+static struct {
+ const char *name;
+ uint32_t number;
+} name_map[] = {
+ { "A", GNUNET_DNSPARSER_TYPE_A },
+ { "NS", GNUNET_DNSPARSER_TYPE_NS },
+ { "CNAME", GNUNET_DNSPARSER_TYPE_CNAME },
+ { "SOA", GNUNET_DNSPARSER_TYPE_SOA },
+ { "PTR", GNUNET_DNSPARSER_TYPE_PTR },
+ { "MX", GNUNET_DNSPARSER_TYPE_MX },
+ { "TXT", GNUNET_DNSPARSER_TYPE_TXT },
+ { "AAAA", GNUNET_DNSPARSER_TYPE_AAAA },
+ { "PKEY", GNUNET_NAMESTORE_TYPE_PKEY },
+ { "PSEU", GNUNET_NAMESTORE_TYPE_PSEU },
+ { "LEHO", GNUNET_NAMESTORE_TYPE_LEHO },
+ { NULL, UINT32_MAX }
+};
+
+
+/**
+ * Convert a type name (i.e. "AAAA") to the corresponding number.
+ *
+ * @param typename name to convert
+ * @return corresponding number, UINT32_MAX on error
+ */
+uint32_t
+GNUNET_NAMESTORE_typename_to_number (const char *typename)
+{
+ unsigned int i;
+
+ i=0;
+ while ( (name_map[i].name != NULL) &&
+ (0 != strcasecmp (typename, name_map[i].name)) )
+ i++;
+ return name_map[i].number;
+}
+
+
+/**
+ * Convert a type number (i.e. 1) to the corresponding type string (i.e. "A")
+ *
+ * @param type number of a type to convert
+ * @return corresponding typestring, NULL on error
+ */
+const char *
+GNUNET_NAMESTORE_number_to_typename (uint32_t type)
+{
+ unsigned int i;
+
+ i=0;
+ while ( (name_map[i].name != NULL) &&
+ (type != name_map[i].number) )
+ i++;
+ return name_map[i].name;
+}
+
+
+
+/* end of namestore_common.c */
projects / oweals / gnunet.git / blobdiff