GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
* GNUnet URIs are of the general form "gnunet://MODULE/IDENTIFIER".
* The specific structure of "IDENTIFIER" depends on the module and
* maybe differenciated into additional subcategories if applicable.
- * This module only deals with ecrs identifiers (MODULE = "ecrs").
+ * This module only deals with fs identifiers (MODULE = "fs").
* <p>
*
- * This module only parses URIs for the AFS module. The ECRS URIs fall
+ * This module only parses URIs for the AFS module. The FS URIs fall
* into four categories, "chk", "sks", "ksk" and "loc". The first three
* categories were named in analogy (!) to Freenet, but they do NOT
* work in exactly the same way. They are very similar from the user's
* <ul><li>
*
* First, there are URIs that identify a file. They have the format
- * "gnunet://ecrs/chk/HEX1.HEX2.SIZE". These URIs can be used to
+ * "gnunet://fs/chk/HEX1.HEX2.SIZE". These URIs can be used to
* download the file. The description, filename, mime-type and other
* meta-data is NOT part of the file-URI since a URI uniquely
* identifies a resource (and the contents of the file would be the
* </li><li>
*
* The second category identifies entries in a namespace. The format
- * is "gnunet://ecrs/sks/NAMESPACE/IDENTIFIER" where the namespace
+ * is "gnunet://fs/sks/NAMESPACE/IDENTIFIER" where the namespace
* should be given in HEX. Applications may allow using a nickname
* for the namespace if the nickname is not ambiguous. The identifier
* can be either an ASCII sequence or a HEX-encoding. If the
* </li> <li>
*
* The third category identifies ordinary searches. The format is
- * "gnunet://ecrs/ksk/KEYWORD[+KEYWORD]*". Using the "+" syntax
+ * "gnunet://fs/ksk/KEYWORD[+KEYWORD]*". Using the "+" syntax
* it is possible to encode searches with the boolean "AND" operator.
* "+" is used since it indicates a commutative 'and' operation and
* is unlikely to be used in a keyword by itself.
* </li><li>
*
* The last category identifies a datum on a specific machine. The
- * format is "gnunet://ecrs/loc/HEX1.HEX2.SIZE.PEER.SIG.EXPTIME". PEER is
+ * format is "gnunet://fs/loc/HEX1.HEX2.SIZE.PEER.SIG.EXPTIME". PEER is
* the BinName of the public key of the peer storing the datum. The
* signature (SIG) certifies that this peer has this content.
* HEX1, HEX2 and SIZE correspond to a 'chk' URI.
}
-
-
/**
* Given a keyword with %-encoding (and possibly quotes to protect
* spaces), return a copy of the keyword without %-encoding and
if (1 != sscanf (&out[rpos + 1], "%2X", &hx))
{
GNUNET_free (out);
+ *emsg = GNUNET_strdup (_("`%' must be followed by HEX number"));
return NULL;
}
rpos += 3;
return ret;
}
+#define GNUNET_FS_URI_KSK_PREFIX GNUNET_FS_URI_PREFIX GNUNET_FS_URI_KSK_INFIX
/**
* Parse a KSK URI.
GNUNET_assert (s != NULL);
slen = strlen (s);
- pos = strlen (GNUNET_FS_URI_PREFIX GNUNET_FS_URI_KSK_INFIX);
+ pos = strlen (GNUNET_FS_URI_KSK_PREFIX);
if ( (slen <= pos) ||
- (0 != strncmp (s, GNUNET_FS_URI_PREFIX GNUNET_FS_URI_KSK_INFIX,
- pos) ) ||
- (s[slen - 1] == '+') ||
+ (0 != strncmp (s, GNUNET_FS_URI_KSK_PREFIX,
+ pos) ) )
+ return NULL; /* not KSK URI */
+ if ( (s[slen - 1] == '+') ||
(s[pos] == '+') )
- return NULL; /* no keywords / malformed */
-
+ {
+ *emsg = GNUNET_strdup (_("Malformed KSK URI (must not begin or end with `+')"));
+ return NULL;
+ }
max = 1;
saw_quote = 0;
for (i = pos; i < slen; i++)
{
max++;
if (s[i - 1] == '+')
- return NULL; /* "++" not allowed */
+ {
+ *emsg = GNUNET_strdup (_("`++' not allowed in KSK URI"));
+ return NULL;
+ }
}
}
if (saw_quote == 1)
- return NULL; /* quotes not balanced */
+ {
+ *emsg = GNUNET_strdup (_("Quotes not balanced in KSK URI"));
+ return NULL;
+ }
iret = max;
dup = GNUNET_strdup (s);
keywords = GNUNET_malloc (max * sizeof (char *));
{
keywords[--max] = percent_decode_keyword (&dup[i + 1], emsg);
if (NULL == keywords[max])
- goto CLEANUP;
+ goto CLEANUP;
dup[i] = '\0';
}
}
}
+#define GNUNET_FS_URI_SKS_PREFIX GNUNET_FS_URI_PREFIX GNUNET_FS_URI_SKS_INFIX
+
/**
* Parse an SKS URI.
*
GNUNET_assert (s != NULL);
slen = strlen (s);
- pos = strlen (GNUNET_FS_URI_PREFIX GNUNET_FS_URI_SKS_INFIX);
+ pos = strlen ( GNUNET_FS_URI_SKS_PREFIX);
if ( (slen <= pos) ||
- (0 != strncmp (s, GNUNET_FS_URI_PREFIX GNUNET_FS_URI_SKS_INFIX,
- pos) ) ||
- (slen < pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) + 1) ||
+ (0 != strncmp (s, GNUNET_FS_URI_SKS_PREFIX,
+ pos) ) )
+ return NULL; /* not an SKS URI */
+ if ( (slen < pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded)) ||
(s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1] != '/') )
- return NULL;
+ {
+ *emsg = GNUNET_strdup (_("Malformed SKS URI"));
+ return NULL;
+ }
memcpy (enc, &s[pos], sizeof(struct GNUNET_CRYPTO_HashAsciiEncoded));
enc[sizeof(struct GNUNET_CRYPTO_HashAsciiEncoded)-1] = '\0';
if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string (enc, &namespace))
- return NULL;
+ {
+ *emsg = GNUNET_strdup (_("Malformed SKS URI"));
+ return NULL;
+ }
identifier = GNUNET_strdup (&s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded)]);
ret = GNUNET_malloc (sizeof(struct GNUNET_FS_Uri));
ret->type = sks;
return ret;
}
+#define GNUNET_FS_URI_CHK_PREFIX GNUNET_FS_URI_PREFIX GNUNET_FS_URI_CHK_INFIX
+
/**
* Parse a CHK URI.
struct GNUNET_FS_Uri *ret;
struct FileIdentifier fi;
unsigned int pos;
+ unsigned long long flen;
size_t slen;
char h1[sizeof(struct GNUNET_CRYPTO_HashAsciiEncoded)];
char h2[sizeof(struct GNUNET_CRYPTO_HashAsciiEncoded)];
+ if (NULL == s)
+ return NULL;
GNUNET_assert (s != NULL);
-
slen = strlen (s);
- pos = strlen (GNUNET_FS_URI_PREFIX GNUNET_FS_URI_CHK_INFIX);
+ pos = strlen (GNUNET_FS_URI_CHK_PREFIX);
if ( (slen < pos + 2 * sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) + 1) ||
- (0 != strncmp (s, GNUNET_FS_URI_PREFIX GNUNET_FS_URI_CHK_INFIX,
- pos) ) ||
- (s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1] != '.') ||
+ (0 != strncmp (s, GNUNET_FS_URI_CHK_PREFIX,
+ pos) ) )
+ return NULL; /* not a CHK URI */
+ if ( (s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1] != '.') ||
(s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) * 2 - 1] != '.') )
- return NULL;
-
+ {
+ *emsg = GNUNET_strdup (_("Malformed CHK URI"));
+ return NULL;
+ }
memcpy (h1,
&s[pos],
sizeof(struct GNUNET_CRYPTO_HashAsciiEncoded));
&fi.chk.query)) ||
(1 != SSCANF (&s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) * 2],
"%llu",
- &fi.file_length)))
- return NULL;
- fi.file_length = GNUNET_htonll (fi.file_length);
-
+ &flen)) )
+ {
+ *emsg = GNUNET_strdup (_("Malformed CHK URI"));
+ return NULL;
+ }
+ fi.file_length = GNUNET_htonll (flen);
ret = GNUNET_malloc (sizeof(struct GNUNET_FS_Uri));
ret->type = chk;
ret->data.chk = fi;
/**
* Convert string back to binary data.
*
- * @param input '\0'-terminated string
+ * @param input '\\0'-terminated string
* @param data where to write binary data
* @param size how much data should be converted
* @return number of characters processed from input,
bits = 0;
hbits = 0;
len = 0;
- pos = 0;
for (pos = 0; pos < size; pos++)
{
while (hbits < 8)
};
+#define GNUNET_FS_URI_LOC_PREFIX GNUNET_FS_URI_PREFIX GNUNET_FS_URI_LOC_INFIX
+
/**
* Parse a LOC URI.
* Also verifies validity of the location URI.
unsigned int pos;
unsigned int npos;
unsigned long long exptime;
+ unsigned long long flen;
struct GNUNET_TIME_Absolute et;
struct GNUNET_CRYPTO_RsaSignature sig;
struct LocUriAssembly ass;
int ret;
size_t slen;
- char *addr;
GNUNET_assert (s != NULL);
slen = strlen (s);
- pos = strlen (GNUNET_FS_URI_PREFIX GNUNET_FS_URI_LOC_INFIX);
+ pos = strlen ( GNUNET_FS_URI_LOC_PREFIX);
if ( (slen < pos + 2 * sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) + 1) ||
- (0 != strncmp (s, GNUNET_FS_URI_PREFIX GNUNET_FS_URI_LOC_INFIX,
- pos) ) ||
- (s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1] != '.') ||
+ (0 != strncmp (s, GNUNET_FS_URI_LOC_PREFIX,
+ pos) ) )
+ return NULL; /* not an SKS URI */
+ if ( (s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) - 1] != '.') ||
(s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) * 2 - 1] != '.') )
- return NULL;
-
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed"));
+ return NULL;
+ }
memcpy (h1,
&s[pos],
sizeof(struct GNUNET_CRYPTO_HashAsciiEncoded));
&ass.fi.chk.query)) ||
(1 != SSCANF (&s[pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) * 2],
"%llu",
- &ass.fi.file_length)) )
- return NULL;
- ass.fi.file_length = GNUNET_htonll (ass.fi.file_length);
+ &flen)) )
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed"));
+ return NULL;
+ }
+ ass.fi.file_length = GNUNET_htonll (flen);
npos = pos + sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) * 2;
while ((s[npos] != '\0') && (s[npos] != '.'))
npos++;
if (s[npos] == '\0')
- goto ERR;
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed"));
+ goto ERR;
+ }
+ npos++;
ret = enc2bin (&s[npos],
&ass.peer,
sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
if (ret == -1)
- goto ERR;
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed (could not decode public key)"));
+ goto ERR;
+ }
npos += ret;
if (s[npos++] != '.')
- goto ERR;
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed (could not find signature)"));
+ goto ERR;
+ }
ret = enc2bin (&s[npos],
&sig,
sizeof (struct GNUNET_CRYPTO_RsaSignature));
if (ret == -1)
- goto ERR;
- npos += ret;
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed (could not decode signature)"));
+ goto ERR;
+ }
+ npos += ret;
if (s[npos++] != '.')
- goto ERR;
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed"));
+ goto ERR;
+ }
if (1 != SSCANF (&s[npos], "%llu", &exptime))
- goto ERR;
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed (could not parse expiration time)"));
+ goto ERR;
+ }
ass.purpose.size = htonl(sizeof(struct LocUriAssembly));
- ass.purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_NAMESPACE_PLACEMENT);
- et.value = exptime;
+ ass.purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_PEER_PLACEMENT);
+ et.abs_value = exptime;
ass.exptime = GNUNET_TIME_absolute_hton (et);
if (GNUNET_OK !=
- GNUNET_CRYPTO_rsa_verify (GNUNET_SIGNATURE_PURPOSE_NAMESPACE_PLACEMENT,
+ GNUNET_CRYPTO_rsa_verify (GNUNET_SIGNATURE_PURPOSE_PEER_PLACEMENT,
&ass.purpose,
&sig,
&ass.peer))
- goto ERR;
-
+ {
+ *emsg = GNUNET_strdup (_("SKS URI malformed (signature failed validation)"));
+ goto ERR;
+ }
uri = GNUNET_malloc (sizeof(struct GNUNET_FS_Uri));
uri->type = loc;
uri->data.loc.fi = ass.fi;
return uri;
ERR:
- GNUNET_free_non_null (addr);
return NULL;
}
char **emsg)
{
struct GNUNET_FS_Uri *ret;
+ char *msg;
+ if (NULL == emsg)
+ emsg = &msg;
+ *emsg = NULL;
if ( (NULL != (ret = uri_chk_parse (uri, emsg))) ||
(NULL != (ret = uri_ksk_parse (uri, emsg))) ||
(NULL != (ret = uri_sks_parse (uri, emsg))) ||
(NULL != (ret = uri_loc_parse (uri, emsg))) )
return ret;
+ if (NULL == *emsg)
+ *emsg = GNUNET_strdup (_("Unrecognized URI type"));
+ if (emsg == &msg)
+ GNUNET_free (msg);
return NULL;
}
}
+/**
+ * Add the given keyword to the set of keywords represented by the URI.
+ * Does nothing if the keyword is already present.
+ *
+ * @param uri ksk uri to modify
+ * @param keyword keyword to add
+ * @param is_mandatory is this keyword mandatory?
+ */
+void
+GNUNET_FS_uri_ksk_add_keyword (struct GNUNET_FS_Uri *uri,
+ const char *keyword,
+ int is_mandatory)
+{
+ unsigned int i;
+ const char *old;
+ char *n;
+
+ GNUNET_assert (uri->type == ksk);
+ for (i = 0; i < uri->data.ksk.keywordCount; i++)
+ {
+ old = uri->data.ksk.keywords[i];
+ if (0 == strcmp (&old[1], keyword))
+ return;
+ }
+ GNUNET_asprintf (&n,
+ is_mandatory ? "+%s" : " %s",
+ keyword);
+ GNUNET_array_append (uri->data.ksk.keywords,
+ uri->data.ksk.keywordCount,
+ n);
+}
+
+
+/**
+ * Remove the given keyword from the set of keywords represented by the URI.
+ * Does nothing if the keyword is not present.
+ *
+ * @param uri ksk uri to modify
+ * @param keyword keyword to add
+ */
+void
+GNUNET_FS_uri_ksk_remove_keyword (struct GNUNET_FS_Uri *uri,
+ const char *keyword)
+{
+ unsigned int i;
+ char *old;
+
+ GNUNET_assert (uri->type == ksk);
+ for (i = 0; i < uri->data.ksk.keywordCount; i++)
+ {
+ old = uri->data.ksk.keywords[i];
+ if (0 == strcmp (&old[1], keyword))
+ {
+ uri->data.ksk.keywords[i] = uri->data.ksk.keywords[uri->data.ksk.keywordCount-1];
+ GNUNET_array_grow (uri->data.ksk.keywords,
+ uri->data.ksk.keywordCount,
+ uri->data.ksk.keywordCount - 1);
+ GNUNET_free (old);
+ return;
+ }
+ }
+}
+
+
/**
* Obtain the identity of the peer offering the data
*
}
+/**
+ * Obtain the expiration of the LOC URI.
+ *
+ * @param uri location URI to get the expiration from
+ * @return expiration time of the URI
+ */
+struct GNUNET_TIME_Absolute
+GNUNET_FS_uri_loc_get_expiration (const struct GNUNET_FS_Uri *uri)
+{
+ GNUNET_assert (uri->type == loc);
+ return uri->data.loc.expirationTime;
+}
+
+
+
/**
* Obtain the URI of the content itself.
*
/**
* Construct a location URI (this peer will be used for the location).
*
- * @param baseURI content offered by the sender
+ * @param baseUri content offered by the sender
* @param cfg configuration information (used to find our hostkey)
* @param expiration_time how long will the content be offered?
* @return the location URI, NULL on error
*/
struct GNUNET_FS_Uri *
GNUNET_FS_uri_loc_create (const struct GNUNET_FS_Uri *baseUri,
- struct GNUNET_CONFIGURATION_Handle *cfg,
- struct GNUNET_TIME_Absolute expiration_time);
+ const struct GNUNET_CONFIGURATION_Handle *cfg,
+ struct GNUNET_TIME_Absolute expiration_time)
+{
+ struct GNUNET_FS_Uri *uri;
+ struct GNUNET_CRYPTO_RsaPrivateKey *my_private_key;
+ struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded my_public_key;
+ char *keyfile;
+ struct LocUriAssembly ass;
+
+ if (baseUri->type != chk)
+ return NULL;
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (cfg,
+ "GNUNETD",
+ "HOSTKEY", &keyfile))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _
+ ("Lacking key configuration settings.\n"));
+ return NULL;
+ }
+ my_private_key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
+ if (my_private_key == NULL)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Could not access hostkey file `%s'.\n"),
+ keyfile);
+ GNUNET_free (keyfile);
+ return NULL;
+ }
+ GNUNET_free (keyfile);
+ GNUNET_CRYPTO_rsa_key_get_public (my_private_key, &my_public_key);
+ ass.purpose.size = htonl(sizeof(struct LocUriAssembly));
+ ass.purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_PEER_PLACEMENT);
+ ass.exptime = GNUNET_TIME_absolute_hton (expiration_time);
+ ass.fi = baseUri->data.chk;
+ ass.peer = my_public_key;
+ uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
+ uri->type = loc;
+ uri->data.loc.fi = baseUri->data.chk;
+ uri->data.loc.expirationTime = expiration_time;
+ uri->data.loc.peer = my_public_key;
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CRYPTO_rsa_sign (my_private_key,
+ &ass.purpose,
+ &uri->data.loc.contentSignature));
+ GNUNET_CRYPTO_rsa_key_free (my_private_key);
+ return uri;
+}
+
+
+/**
+ * Create an SKS URI from a namespace and an identifier.
+ *
+ * @param ns namespace
+ * @param id identifier
+ * @param emsg where to store an error message
+ * @return an FS URI for the given namespace and identifier
+ */
+struct GNUNET_FS_Uri *
+GNUNET_FS_uri_sks_create (struct GNUNET_FS_Namespace *ns,
+ const char *id,
+ char **emsg)
+{
+ struct GNUNET_FS_Uri *ns_uri;
+ struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pk;
+
+ ns_uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
+ ns_uri->type = sks;
+ GNUNET_CRYPTO_rsa_key_get_public (ns->key,
+ &pk);
+ GNUNET_CRYPTO_hash (&pk,
+ sizeof (pk),
+ &ns_uri->data.sks.namespace);
+ ns_uri->data.sks.identifier = GNUNET_strdup (id);
+ return ns_uri;
+}
+
+
+/**
+ * Create an SKS URI from a namespace ID and an identifier.
+ *
+ * @param nsid namespace ID
+ * @param id identifier
+ * @return an FS URI for the given namespace and identifier
+ */
+struct GNUNET_FS_Uri *
+GNUNET_FS_uri_sks_create_from_nsid (GNUNET_HashCode *nsid,
+ const char *id)
+{
+ struct GNUNET_FS_Uri *ns_uri;
+
+ ns_uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
+ ns_uri->type = sks;
+ ns_uri->data.sks.namespace = *nsid;
+ ns_uri->data.sks.identifier = GNUNET_strdup (id);
+ return ns_uri;
+}
+
+
+/**
+ * Canonicalize a keyword.
+ *
+ * @param in input string (the keyword)
+ * @return canonicalized keyword
+ */
+static char *
+canonicalize_keyword (const char *in)
+{
+ char *ret;
+ char *wpos;
+ const char *rpos;
+
+ ret = GNUNET_strdup (in);
+ wpos = ret;
+ rpos = in;
+ while ('\0' != *rpos)
+ {
+ switch (tolower( (unsigned char) *rpos))
+ {
+ case 'a':
+ case 'e':
+ case 'i':
+ case 'o':
+ case 'u':
+ case ' ':
+ case '\t':
+ case '\n':
+ case '\r':
+ /* skip characters listed above */
+ break;
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'f':
+ case 'g':
+ case 'h':
+ case 'j':
+ case 'k':
+ case 'l':
+ case 'm':
+ case 'n':
+ case 'p':
+ case 'r':
+ case 's':
+ case 't':
+ case 'v':
+ case 'w':
+ case 'x':
+ case 'y':
+ case 'z':
+ /* convert characters listed above to lower case */
+ *wpos = tolower( (unsigned char)*rpos);
+ wpos++;
+ break;
+ case '!':
+ case '.':
+ case '?':
+ case '-':
+ /* keep characters listed above without changes */
+ *wpos = *rpos;
+ wpos++;
+ break;
+ default:
+ /* replace characters listed above with '_' */
+ *wpos = '_';
+ wpos++;
+ break;
+ }
+ rpos++;
+ }
+ return ret;
+}
/**
struct GNUNET_FS_Uri *
GNUNET_FS_uri_ksk_canonicalize (const struct GNUNET_FS_Uri *uri)
{
- /* FIXME: not implemented */
- return NULL;
+ struct GNUNET_FS_Uri *ret;
+ unsigned int kc;
+ unsigned int i;
+ char **kl;
+
+ kc = uri->data.ksk.keywordCount;
+ kl = GNUNET_malloc (kc*sizeof(char*));
+ for (i=0;i<kc;i++)
+ kl[i] = canonicalize_keyword (uri->data.ksk.keywords[i]);
+ ret = GNUNET_malloc (sizeof(struct GNUNET_FS_Uri));
+ ret->type = ksk;
+ ret->data.ksk.keywordCount = kc;
+ ret->data.ksk.keywords = kl;
+ return ret;
}
GNUNET_FS_uri_ksk_merge (const struct GNUNET_FS_Uri *u1,
const struct GNUNET_FS_Uri *u2)
{
- /* FIXME */
- return NULL;
+ struct GNUNET_FS_Uri *ret;
+ unsigned int kc;
+ unsigned int i;
+ unsigned int j;
+ int found;
+ const char *kp;
+ char **kl;
+
+ if ( (u1 == NULL) && (u2 == NULL) )
+ return NULL;
+ if (u1 == NULL)
+ return GNUNET_FS_uri_dup (u2);
+ if (u2 == NULL)
+ return GNUNET_FS_uri_dup (u1);
+ if ( (u1->type != ksk) ||
+ (u2->type != ksk) )
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ kc = u1->data.ksk.keywordCount;
+ kl = GNUNET_malloc ((kc+u2->data.ksk.keywordCount)*sizeof(char*));
+ for (i=0;i<u1->data.ksk.keywordCount;i++)
+ kl[i] = GNUNET_strdup (u1->data.ksk.keywords[i]);
+ for (i=0;i<u2->data.ksk.keywordCount;i++)
+ {
+ kp = u2->data.ksk.keywords[i];
+ found = 0;
+ for (j=0;j<u1->data.ksk.keywordCount;j++)
+ if (0 == strcmp(kp + 1,
+ kl[j]+1))
+ {
+ found = 1;
+ if (kp[0] == '+')
+ kl[j][0] = '+';
+ break;
+ }
+ if (0 == found)
+ kl[kc++] = GNUNET_strdup (kp);
+ }
+ ret = GNUNET_malloc (sizeof(struct GNUNET_FS_Uri));
+ ret->type = ksk;
+ ret->data.ksk.keywordCount = kc;
+ ret->data.ksk.keywords = kl;
+ return ret;
}
struct GNUNET_FS_Uri *ret;
unsigned int i;
+ if (uri == NULL)
+ return NULL;
ret = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
memcpy (ret, uri, sizeof (struct GNUNET_FS_Uri));
switch (ret->type)
{
case ksk:
+ if (ret->data.ksk.keywordCount >= GNUNET_MAX_MALLOC_CHECKED / sizeof (char*))
+ {
+ GNUNET_break (0);
+ GNUNET_free (ret);
+ return NULL;
+ }
if (ret->data.ksk.keywordCount > 0)
- {
+ {
ret->data.ksk.keywords
= GNUNET_malloc (ret->data.ksk.keywordCount * sizeof (char *));
for (i = 0; i < ret->data.ksk.keywordCount; i++)
* "OR"ed keywords 'foo' and 'bar', not into '"foo bar"'.
*
* @param keywords the keyword string
+ * @param emsg where to store an error message
* @return an FS URI for the given keywords, NULL
* if keywords is not legal (i.e. empty).
*/
struct GNUNET_FS_Uri *
-GNUNET_FS_uri_ksk_create (const char *keywords)
+GNUNET_FS_uri_ksk_create (const char *keywords,
+ char **emsg)
{
- /* FIXME */
- return NULL;
+ char **keywordarr;
+ unsigned int num_Words;
+ int inWord;
+ char *pos;
+ struct GNUNET_FS_Uri *uri;
+ char *searchString;
+ int saw_quote;
+
+ if (keywords == NULL)
+ {
+ *emsg = GNUNET_strdup (_("No keywords specified!\n"));
+ GNUNET_break (0);
+ return NULL;
+ }
+ searchString = GNUNET_strdup (keywords);
+ num_Words = 0;
+ inWord = 0;
+ saw_quote = 0;
+ pos = searchString;
+ while ('\0' != *pos)
+ {
+ if ((saw_quote == 0) && (isspace ((unsigned char) *pos)))
+ {
+ inWord = 0;
+ }
+ else if (0 == inWord)
+ {
+ inWord = 1;
+ ++num_Words;
+ }
+ if ('"' == *pos)
+ saw_quote = (saw_quote + 1) % 2;
+ pos++;
+ }
+ if (num_Words == 0)
+ {
+ GNUNET_free (searchString);
+ *emsg = GNUNET_strdup (_("No keywords specified!\n"));
+ return NULL;
+ }
+ if (saw_quote != 0)
+ {
+ GNUNET_free (searchString);
+ *emsg = GNUNET_strdup (_("Number of double-quotes not balanced!\n"));
+ return NULL;
+ }
+ keywordarr = GNUNET_malloc (num_Words * sizeof (char *));
+ num_Words = 0;
+ inWord = 0;
+ pos = searchString;
+ while ('\0' != *pos)
+ {
+ if ((saw_quote == 0) && (isspace ( (unsigned char) *pos)))
+ {
+ inWord = 0;
+ *pos = '\0';
+ }
+ else if (0 == inWord)
+ {
+ keywordarr[num_Words] = pos;
+ inWord = 1;
+ ++num_Words;
+ }
+ if ('"' == *pos)
+ saw_quote = (saw_quote + 1) % 2;
+ pos++;
+ }
+ uri =
+ GNUNET_FS_uri_ksk_create_from_args (num_Words,
+ (const char **) keywordarr);
+ GNUNET_free (keywordarr);
+ GNUNET_free (searchString);
+ return uri;
}
GNUNET_FS_uri_ksk_create_from_args (unsigned int argc,
const char **argv)
{
- /* FIXME */
- return NULL;
+ unsigned int i;
+ struct GNUNET_FS_Uri *uri;
+ const char *keyword;
+ char *val;
+ const char *r;
+ char *w;
+ char *emsg;
+
+ if (argc == 0)
+ return NULL;
+ /* allow URI to be given as one and only keyword and
+ handle accordingly */
+ emsg = NULL;
+ if ( (argc == 1) &&
+ (strlen(argv[0]) > strlen(GNUNET_FS_URI_PREFIX)) &&
+ (0 == strncmp(argv[0], GNUNET_FS_URI_PREFIX, strlen(GNUNET_FS_URI_PREFIX)) ) &&
+ (NULL != (uri = GNUNET_FS_uri_parse(argv[0], &emsg)) ) )
+ return uri;
+ GNUNET_free_non_null (emsg);
+ uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
+ uri->type = ksk;
+ uri->data.ksk.keywordCount = argc;
+ uri->data.ksk.keywords = GNUNET_malloc (argc * sizeof (char *));
+ for (i = 0; i < argc; i++)
+ {
+ keyword = argv[i];
+ if (keyword[0] == '+')
+ val = GNUNET_strdup (keyword);
+ else
+ GNUNET_asprintf (&val, " %s", keyword);
+ r = val;
+ w = val;
+ while ('\0' != *r)
+ {
+ if ('"' == *r)
+ r++;
+ else
+ *(w++) = *(r++);
+ }
+ *w = '\0';
+ uri->data.ksk.keywords[i] = val;
+ }
+ return uri;
}
GNUNET_FS_uri_sks_to_string_fancy (struct GNUNET_CONFIGURATION_Handle *cfg,
const struct GNUNET_FS_Uri *uri)
{
- /* FIXME */
- return NULL;
+ char *ret;
+ char *name;
+
+ if (uri->type != sks)
+ return NULL;
+ name = GNUNET_PSEUDONYM_id_to_name (cfg, &uri->data.sks.namespace);
+ if (name == NULL)
+ return GNUNET_FS_uri_to_string (uri);
+ GNUNET_asprintf (&ret,
+ "%s: %s",
+ name,
+ uri->data.sks.identifier);
+ GNUNET_free (name);
+ return ret;
}
* Adds it to the URI.
*
* @param cls URI to update
- * @param type type of the meta data
- * @param data value of the meta data
- * @return GNUNET_OK (always)
+ * @param plugin_name name of the plugin that produced this value;
+ * special values can be used (i.e. '<zlib>' for zlib being
+ * used in the main libextractor library and yielding
+ * meta data).
+ * @param type libextractor-type describing the meta data
+ * @param format basic format information about data
+ * @param data_mime_type mime-type of data (not of the original file);
+ * can be NULL (if mime-type is not known)
+ * @param data actual meta-data found
+ * @param data_len number of bytes in data
+ * @return 0 (always)
*/
static int
gather_uri_data (void *cls,
- EXTRACTOR_KeywordType type,
- const char *data)
+ const char *plugin_name,
+ enum EXTRACTOR_MetaType type,
+ enum EXTRACTOR_MetaFormat format,
+ const char *data_mime_type,
+ const char *data,
+ size_t data_len)
{
struct GNUNET_FS_Uri *uri = cls;
char *nkword;
int j;
+ if ( (format != EXTRACTOR_METAFORMAT_UTF8) &&
+ (format != EXTRACTOR_METAFORMAT_C_STRING) )
+ return 0;
for (j = uri->data.ksk.keywordCount - 1; j >= 0; j--)
if (0 == strcmp (&uri->data.ksk.keywords[j][1], data))
return GNUNET_OK;
- nkword = GNUNET_malloc (strlen (data) + 2);
- strcpy (nkword, " "); /* not mandatory */
- strcat (nkword, data);
+ GNUNET_asprintf (&nkword,
+ " %s", /* space to mark as 'non mandatory' */
+ data);
uri->data.ksk.keywords[uri->data.ksk.keywordCount++] = nkword;
- return GNUNET_OK;
+ return 0;
}
* Construct a keyword-URI from meta-data (take all entries
* in the meta-data and construct one large keyword URI
* that lists all keywords that can be found in the meta-data).
- * @deprecated
+ *
+ * @param md metadata to use
+ * @return NULL on error, otherwise a KSK URI
*/
struct GNUNET_FS_Uri *
GNUNET_FS_uri_ksk_create_from_meta_data (const struct GNUNET_CONTAINER_MetaData *md)
{
struct GNUNET_FS_Uri *ret;
+ int ent;
if (md == NULL)
return NULL;
ret = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
ret->type = ksk;
- ret->data.ksk.keywordCount = 0;
- ret->data.ksk.keywords = NULL;
- ret->data.ksk.keywords
- = GNUNET_malloc (sizeof (char *) *
- GNUNET_CONTAINER_meta_data_get_contents (md, NULL, NULL));
- GNUNET_CONTAINER_meta_data_get_contents (md, &gather_uri_data, ret);
+ ent = GNUNET_CONTAINER_meta_data_iterate (md, NULL, NULL);
+ if (ent > 0)
+ {
+ ret->data.ksk.keywords
+ = GNUNET_malloc (sizeof (char *) * ent);
+ GNUNET_CONTAINER_meta_data_iterate (md, &gather_uri_data, ret);
+ }
return ret;
-
}
static int
needs_percent (char c)
{
- return (!((isalnum (c)) ||
+ return (!((isalnum ( (unsigned char) c)) ||
(c == '-') || (c == '_') || (c == '.') || (c == '~')));
}
/**
* Convert binary data to a string.
*
+ * @param data binary data to convert
+ * @param size number of bytes in data
* @return converted data
*/
static char *
}
}
if (hbits > 0)
- ret[len++] = tbl[bits & 63];
+ ret[len] = tbl[bits & 63];
return ret;
}
(unsigned long long) GNUNET_ntohll (uri->data.loc.fi.file_length),
peerId,
peerSig,
- (unsigned long long) uri->data.loc.expirationTime.value);
+ (unsigned long long) uri->data.loc.expirationTime.abs_value);
GNUNET_free (peerSig);
GNUNET_free (peerId);
return ret;
}
}
-
-#if 0
-
-/**
- * Construct a location URI.
- *
- * @param baseURI content offered by the sender
- * @param sender identity of the peer with the content
- * @param expiration_time how long will the content be offered?
- * @param proto transport protocol to reach the peer
- * @param sas sender address size (for HELLO)
- * @param address sas bytes of address information
- * @param signer function to call for obtaining
- * RSA signatures for "sender".
- * @return the location URI
- */
-struct GNUNET_ECRS_URI *
-GNUNET_ECRS_location_to_uri (const struct GNUNET_ECRS_URI *baseUri,
- const GNUNET_RSA_PublicKey * sender,
- GNUNET_Int32Time expirationTime,
- GNUNET_ECRS_SignFunction signer,
- void *signer_cls)
-{
- struct GNUNET_ECRS_URI *uri;
-
- if (baseUri->type != chk)
- return NULL;
-
- uri = GNUNET_malloc (sizeof (struct GNUNET_ECRS_URI));
- uri->type = loc;
- uri->data.loc.fi = baseUri->data.fi;
- uri->data.loc.peer = *sender;
- uri->data.loc.expirationTime = expirationTime;
- signer (signer_cls,
- sizeof (GNUNET_EC_FileIdentifier) +
- sizeof (GNUNET_PeerIdentity) +
- sizeof (GNUNET_Int32Time),
- &uri->data.loc.fi, &uri->data.loc.contentSignature);
- return uri;
-}
-
-#endif
-
-/* end of uri.c */
+/* end of fs_uri.c */
projects / oweals / gnunet.git / blobdiff