aniani/icecast-server
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Feature: Implemented a way to put back data read from a connection

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This commit is contained in:
Philipp Schafft 2018-06-18 09:34:27 +00:00
parent 460477230d
commit f370e88335
2 changed files with 82 additions and 13 deletions
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91
src/connection.c
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@ -271,6 +271,12 @@ void connection_uses_tls(connection_t *con)
if (con->tls)
return;
if (con->readbufferlen) {
ICECAST_LOG_ERROR("Connection is now using TLS but has data put back. BAD. Discarding putback data.");
free(con->readbuffer);
con->readbufferlen = 0;
}
con->tlsmode = ICECAST_TLSMODE_RFC2818;
con->read = connection_read_tls;
con->send = connection_send_tls;
@ -282,7 +288,70 @@ void connection_uses_tls(connection_t *con)
ssize_t connection_read_bytes(connection_t *con, void *buf, size_t len)
{
return con->read(con, buf, len);
ssize_t done = 0;
ssize_t ret;
if (con->readbufferlen) {
ICECAST_LOG_DEBUG("On connection %p we read from putback buffer, filled with %zu bytes, requested are %zu bytes", con, con->readbufferlen, len);
if (len >= con->readbufferlen) {
memcpy(buf, con->readbuffer, con->readbufferlen);
free(con->readbuffer);
if (len == con->readbufferlen) {
con->readbufferlen = 0;
return len;
} else {
len -= con->readbufferlen;
buf += con->readbufferlen;
done = con->readbufferlen;
con->readbufferlen = 0;
}
} else {
memcpy(buf, con->readbuffer, len);
memmove(con->readbuffer, con->readbuffer+len, con->readbufferlen-len);
con->readbufferlen -= len;
return len;
}
}
ret = con->read(con, buf, len);
if (ret < 0) {
if (done == 0) {
return ret;
} else {
return done;
}
}
return done + ret;
}
int connection_read_put_back(connection_t *con, const void *buf, size_t len)
{
void *n;
if (con->readbufferlen) {
n = realloc(con->readbuffer, con->readbufferlen + len);
if (!n)
return -1;
memcpy(n + con->readbufferlen, buf, len);
con->readbuffer = n;
con->readbufferlen += len;
ICECAST_LOG_DEBUG("On connection %p %zu bytes have been put back.", con, len);
return 0;
} else {
n = malloc(len);
if (!n)
return -1;
memcpy(n, buf, len);
con->readbuffer = n;
con->readbufferlen = len;
ICECAST_LOG_DEBUG("On connection %p %zu bytes have been put back.", con, len);
return 0;
}
}
static sock_t wait_for_serversock(int timeout)
@ -1043,13 +1112,10 @@ static void _handle_shoutcast_compatible(client_queue_t *node)
httpp_initialize(parser, NULL);
if (httpp_parse(parser, http_compliant, strlen(http_compliant))) {
/* we may have more than just headers, so prepare for it */
if (node->stream_offset == node->offset) {
client->refbuf->len = 0;
} else {
char *ptr = client->refbuf->data;
client->refbuf->len = node->offset - node->stream_offset;
memmove(ptr, ptr + node->stream_offset, client->refbuf->len);
if (node->stream_offset != node->offset) {
connection_read_put_back(client->con, client->refbuf->data + node->stream_offset, node->offset - node->stream_offset);
}
client->refbuf->len = 0;
client->parser = parser;
client->protocol = ICECAST_PROTOCOL_SHOUTCAST;
node->shoutcast = 0;
@ -1402,13 +1468,10 @@ static void _handle_connection(void)
const char *upgrade, *connection;
/* we may have more than just headers, so prepare for it */
if (node->stream_offset == node->offset) {
client->refbuf->len = 0;
} else {
char *ptr = client->refbuf->data;
client->refbuf->len = node->offset - node->stream_offset;
memmove (ptr, ptr + node->stream_offset, client->refbuf->len);
if (node->stream_offset != node->offset) {
connection_read_put_back(client->con, client->refbuf->data + node->stream_offset, node->offset - node->stream_offset);
}
client->refbuf->len = 0;
rawuri = httpp_getvar(parser, HTTPP_VAR_URI);
@ -1579,5 +1642,7 @@ void connection_close(connection_t *con)
sock_close(con->sock);
if (con->ip)
free(con->ip);
if (con->readbufferlen)
free(con->readbuffer);
free(con);
}

4
src/connection.h
View File

@ -40,6 +40,9 @@ struct connection_tag {
int (*send)(connection_t *handle, const void *buf, size_t len);
int (*read)(connection_t *handle, void *buf, size_t len);
void *readbuffer;
size_t readbufferlen;
char *ip;
};
@ -55,6 +58,7 @@ void connection_queue(connection_t *con);
void connection_uses_tls(connection_t *con);
ssize_t connection_read_bytes(connection_t *con, void *buf, size_t len);
int connection_read_put_back(connection_t *con, const void *buf, size_t len);
extern rwlock_t _source_shutdown_rwlock;