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factor out reading meshms conversation list bundle.

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This commit is contained in:
gardners 2013-05-15 10:59:01 +09:30
parent cdec40093b
commit cd96383490
1 changed files with 41 additions and 26 deletions
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67
meshms.c
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@ -162,29 +162,10 @@ int app_meshms_add_message(const struct cli_parsed *parsed, void *context)
return ret;
}
int meshms_remember_conversation(const char *sender_sid_hex,
rhizome_manifest *m)
int meshms_read_conversation_log(const char *sender_sid_hex,
rhizome_manifest *l,
unsigned char **buffer_file)
{
// Check if the BID:recipient pair exists in the meshms conversation log
// bundle.
char *recipient_hex=rhizome_manifest_get(m,"recipient",NULL,0);
sid_t rxSid,txSid;
if (!recipient_hex||!recipient_hex[0]
||cf_opt_sid(&rxSid,recipient_hex)||cf_opt_sid(&txSid,sender_sid_hex))
return WHY("sender or recipient SID could not be parsed.");
// Generate conversation row for remembering
unsigned char row[SID_SIZE+crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES];
bcopy(&rxSid.binary,&row[0],SID_SIZE);
bcopy(m->cryptoSignPublic,&row[SID_SIZE],
crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES);
rhizome_manifest *l = rhizome_new_manifest();
if (!l) {
return WHY("Manifest struct could not be allocated -- not added to rhizome");
}
// Check if there is an existing one, if so, read it and return it.
if (rhizome_meshms_derive_conversation_log_bid(sender_sid_hex,l))
return WHYF("Could not derive conversation log bid for sid: %s",sender_sid_hex);
@ -226,19 +207,53 @@ int meshms_remember_conversation(const char *sender_sid_hex,
// empty records onto the end when it fills up, and allocate 256 entries
// initially. The idea is to make it harder for an adversary to estimate the
// size of your social graph.
unsigned char *buffer_file=malloc(l->fileLength+sizeof(row)*256);
if (!buffer_file) {
*buffer_file=malloc(l->fileLength+(SID_SIZE+crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES)*256);
if (!*buffer_file) {
rhizome_manifest_free(l);
return WHYF("malloc(%d) failed when reading existing conversation index.",
l->fileLength);
}
if (l->fileLength) {
int ret = meshms_read_message(l,buffer_file);
int ret = meshms_read_message(l,*buffer_file);
if (ret) {
rhizome_manifest_free(l);
return WHYF("meshms_read_message() failed.");
}
}
return 0;
}
int meshms_remember_conversation(const char *sender_sid_hex,
rhizome_manifest *m)
{
// Check if the BID:recipient pair exists in the meshms conversation log
// bundle.
char *recipient_hex=rhizome_manifest_get(m,"recipient",NULL,0);
sid_t rxSid,txSid;
if (!recipient_hex||!recipient_hex[0]
||cf_opt_sid(&rxSid,recipient_hex)||cf_opt_sid(&txSid,sender_sid_hex))
return WHY("sender or recipient SID could not be parsed.");
// Generate conversation row for remembering
unsigned char row[SID_SIZE+crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES];
bcopy(&rxSid.binary,&row[0],SID_SIZE);
bcopy(m->cryptoSignPublic,&row[SID_SIZE],
crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES);
rhizome_manifest *l = rhizome_new_manifest();
if (!l) {
return WHY("Manifest struct could not be allocated -- not added to rhizome");
}
unsigned char *buffer_file=NULL;
if (meshms_read_conversation_log(sender_sid_hex,l,&buffer_file)) {
rhizome_manifest_free(l);
if (buffer_file) free(buffer_file);
return WHYF("meshms_read_conversation_log() failed");
}
int i;
for(i=0;i<l->fileLength;i+=sizeof(row)) {
@ -285,7 +300,7 @@ int meshms_remember_conversation(const char *sender_sid_hex,
free(buffer_file);
rhizome_manifest *mout = NULL;
ret=rhizome_manifest_finalise(l,&mout);
int ret=rhizome_manifest_finalise(l,&mout);
if (ret<0){
cli_printf("Error in manifest finalise");
rhizome_manifest_free(l);