From 6f2fea73761343ab03d6baebb2c32907e4e0ae3d Mon Sep 17 00:00:00 2001 From: Florian Forster Date: Mon, 26 Mar 2007 16:29:07 +0200 Subject: [PATCH] network plugin: Fixed quite some bugs. --- src/network.c | 49 +++++++++++++++++++++++++++++++++---------------- 1 file changed, 33 insertions(+), 16 deletions(-) diff --git a/src/network.c b/src/network.c index b59b16d2..b5d8efb4 100644 --- a/src/network.c +++ b/src/network.c @@ -161,6 +161,7 @@ static char *send_buffer_ptr; static int send_buffer_fill; static value_list_t send_buffer_vl = VALUE_LIST_INIT; static char send_buffer_type[DATA_MAX_NAME_LEN]; +static pthread_mutex_t send_buffer_lock = PTHREAD_MUTEX_INITIALIZER; /* * Private functions @@ -328,7 +329,8 @@ static int parse_part_string (void **ret_buffer, int *ret_buffer_len, uint16_t h_length; uint16_t h_type; - DEBUG ("ret_buffer = %p; ret_buffer_len = %i; output = %p; output_len = %i;", + DEBUG ("network plugin: parse_part_string: ret_buffer = %p;" + " ret_buffer_len = %i; output = %p; output_len = %i;", *ret_buffer, *ret_buffer_len, (void *) output, output_len); @@ -337,7 +339,8 @@ static int parse_part_string (void **ret_buffer, int *ret_buffer_len, h_length = ntohs (ps.head->length); h_type = ntohs (ps.head->type); - DEBUG ("length = %hu; type = %hu;", h_length, h_type); + DEBUG ("network plugin: parse_part_string: length = %hu; type = %hu;", + h_length, h_type); if (buffer_len < h_length) { @@ -364,7 +367,7 @@ static int parse_part_string (void **ret_buffer, int *ret_buffer_len, } strcpy (output, ps.value); - DEBUG ("output = %s", output); + DEBUG ("network plugin: parse_part_string: output = %s", output); *ret_buffer = (void *) (buffer + h_length); *ret_buffer_len = buffer_len - h_length; @@ -392,8 +395,11 @@ static int parse_packet (void *buffer, int buffer_len) if (ntohs (header->length) > buffer_len) break; + /* Assure that this loop terminates eventually */ + if (ntohs (header->length) < 4) + break; - if (header->type == htons (TYPE_VALUES)) + if (ntohs (header->type) == TYPE_VALUES) { status = parse_part_values (&buffer, &buffer_len, &vl.values, &vl.values_len); @@ -417,42 +423,47 @@ static int parse_packet (void *buffer, int buffer_len) DEBUG ("NOT dispatching values"); } } - else if (header->type == ntohs (TYPE_TIME)) + else if (ntohs (header->type) == TYPE_TIME) { uint64_t tmp = 0; status = parse_part_number (&buffer, &buffer_len, &tmp); if (status == 0) vl.time = (time_t) tmp; } - else if (header->type == ntohs (TYPE_HOST)) + else if (ntohs (header->type) == TYPE_HOST) { status = parse_part_string (&buffer, &buffer_len, vl.host, sizeof (vl.host)); + DEBUG ("network plugin: parse_packet: vl.host = %s", vl.host); } - else if (header->type == ntohs (TYPE_PLUGIN)) + else if (ntohs (header->type) == TYPE_PLUGIN) { status = parse_part_string (&buffer, &buffer_len, vl.plugin, sizeof (vl.plugin)); + DEBUG ("network plugin: parse_packet: vl.plugin = %s", vl.plugin); } - else if (header->type == ntohs (TYPE_PLUGIN_INSTANCE)) + else if (ntohs (header->type) == TYPE_PLUGIN_INSTANCE) { status = parse_part_string (&buffer, &buffer_len, vl.plugin_instance, sizeof (vl.plugin_instance)); + DEBUG ("network plugin: parse_packet: vl.plugin_instance = %s", vl.plugin_instance); } - else if (header->type == ntohs (TYPE_TYPE)) + else if (ntohs (header->type) == TYPE_TYPE) { status = parse_part_string (&buffer, &buffer_len, type, sizeof (type)); + DEBUG ("network plugin: parse_packet: type = %s", type); } - else if (header->type == ntohs (TYPE_TYPE_INSTANCE)) + else if (ntohs (header->type) == TYPE_TYPE_INSTANCE) { status = parse_part_string (&buffer, &buffer_len, vl.type_instance, sizeof (vl.type_instance)); + DEBUG ("network type: parse_packet: vl.type_instance = %s", vl.type_instance); } else { - DEBUG ("Unknown part type: 0x%0hx", header->type); - buffer = ((char *) buffer) + header->length; + DEBUG ("Unknown part type: 0x%0hx", ntohs (header->type)); + buffer = ((char *) buffer) + ntohs (header->length); } } /* while (buffer_len > sizeof (part_header_t)) */ @@ -937,6 +948,8 @@ static int add_to_buffer (char *buffer, int buffer_size, value_list_t *vl_def, char *type_def, const data_set_t *ds, const value_list_t *vl) { + char *buffer_orig = buffer; + if (strcmp (vl_def->host, vl->host) != 0) { if (write_part_string (&buffer, &buffer_size, TYPE_HOST, @@ -985,7 +998,7 @@ static int add_to_buffer (char *buffer, int buffer_size, if (strcmp (vl_def->type_instance, vl->type_instance) != 0) { - if (write_part_string (&buffer, &buffer_size, TYPE_PLUGIN_INSTANCE, + if (write_part_string (&buffer, &buffer_size, TYPE_TYPE_INSTANCE, vl->type_instance, strlen (vl->type_instance)) != 0) return (-1); @@ -996,7 +1009,7 @@ static int add_to_buffer (char *buffer, int buffer_size, if (write_part_values (&buffer, &buffer_size, ds, vl) != 0) return (-1); - return (buffer_size); + return (buffer - buffer_orig); } /* int add_to_buffer */ static void flush_buffer (void) @@ -1011,13 +1024,16 @@ static void flush_buffer (void) static int network_write (const data_set_t *ds, const value_list_t *vl) { int status; - /* TODO: lock buffer */ + + pthread_mutex_lock (&send_buffer_lock); + status = add_to_buffer (send_buffer_ptr, sizeof (send_buffer) - send_buffer_fill, &send_buffer_vl, send_buffer_type, ds, vl); if (status >= 0) { + /* status == bytes added to the buffer */ send_buffer_fill += status; send_buffer_ptr += status; } @@ -1046,7 +1062,8 @@ static int network_write (const data_set_t *ds, const value_list_t *vl) { flush_buffer (); } - /* TODO: unlock buffer */ + + pthread_mutex_unlock (&send_buffer_lock); return ((status < 0) ? -1 : 0); } /* int network_write */ -- 2.30.2