/**
* Creates a file filled with zeroes
*
* @param fh the file handle
* @param size the size of the file
* @return GNUNET_OK if created ok, GNUNET_SYSERR otherwise
*/
static int
make_empty_file (const struct GNUNET_DISK_FileHandle *fh, size_t size)
{
char buffer[BUFFSIZE];
size_t bytesleft = size;
int res = 0;
if (GNUNET_DISK_handle_invalid (fh))
return GNUNET_SYSERR;
memset (buffer, 0, sizeof (buffer));
GNUNET_DISK_file_seek (fh, 0, GNUNET_DISK_SEEK_SET);
while (bytesleft > 0)
{
if (bytesleft > sizeof (buffer))
{
res = GNUNET_DISK_file_write (fh, buffer, sizeof (buffer));
if (res >= 0)
bytesleft -= res;
}
else
{
res = GNUNET_DISK_file_write (fh, buffer, bytesleft);
if (res >= 0)
bytesleft -= res;
}
if (GNUNET_SYSERR == res)
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
static void
write_bw_gnuplot_script (char * fn, struct LoggingPeer *lp, char **fs, int slaves)
{
struct GNUNET_DISK_FileHandle *f;
char * gfn;
char *data;
int c_s;
GNUNET_asprintf (&gfn, "gnuplot_bw_%s",fn);
fprintf (stderr, "Writing bandwidth plot for master %u to `%s'\n",
lp->peer->no, gfn);
f = GNUNET_DISK_file_open (gfn,
GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE,
GNUNET_DISK_PERM_USER_EXEC | GNUNET_DISK_PERM_USER_READ |
GNUNET_DISK_PERM_USER_WRITE);
if (NULL == f)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot open gnuplot file `%s'\n", gfn);
GNUNET_free (gfn);
return;
}
/* Write header */
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f, BW_TEMPLATE, strlen(BW_TEMPLATE)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot write data to plot file `%s'\n", gfn);
for (c_s = 0; c_s < slaves; c_s++)
{
GNUNET_asprintf (&data, "%s"\
"'%s' using 2:%u with lines title 'BW out master %u - Slave %u ', \\\n" \
"'%s' using 2:%u with lines title 'BW in master %u - Slave %u '"\
"%s\n",
(0 == c_s) ? "plot " :"",
fs[c_s],
LOG_ITEMS_TIME + LOG_ITEM_ATS_BW_OUT,
lp->peer->no, c_s,
fs[c_s],
LOG_ITEMS_TIME + LOG_ITEM_ATS_BW_IN,
lp->peer->no, c_s,
(c_s < lp->peer->num_partners -1) ? ", \\" : "\n pause -1");
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f, data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot write data to plot file `%s'\n", gfn);
GNUNET_free (data);
}
if (GNUNET_SYSERR == GNUNET_DISK_file_close(f))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot close gnuplot file `%s'\n", gfn);
else
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Data successfully written to plot file `%s'\n", gfn);
GNUNET_free (gfn);
}
/**
* @brief Iterator function for #store_valid_peers.
*
* Implements #GNUNET_CONTAINER_PeerMapIterator.
* Writes single peer to disk.
*
* @param cls the file handle to write to.
* @param peer current peer
* @param value unused
*
* @return #GNUNET_YES if we should continue to
* iterate,
* #GNUNET_NO if not.
*/
static int
store_peer_presistently_iterator (void *cls,
const struct GNUNET_PeerIdentity *peer,
void *value)
{
const struct GNUNET_DISK_FileHandle *fh = cls;
char peer_string[128];
int size;
ssize_t ret;
if (NULL == peer)
{
return GNUNET_YES;
}
size = GNUNET_snprintf (peer_string,
sizeof (peer_string),
"%s\n",
GNUNET_i2s_full (peer));
GNUNET_assert (53 == size);
ret = GNUNET_DISK_file_write (fh,
peer_string,
size);
GNUNET_assert (size == ret);
return GNUNET_YES;
}
static void
run_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
char *fn;
const struct GNUNET_DISK_FileHandle *stdout_read_handle;
const struct GNUNET_DISK_FileHandle *wh;
#if !WINDOWS
GNUNET_asprintf (&fn, "cat");
#else
GNUNET_asprintf (&fn, "w32cat");
#endif
hello_pipe_stdin = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_YES, GNUNET_NO);
hello_pipe_stdout = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_NO, GNUNET_YES);
if ((hello_pipe_stdout == NULL) || (hello_pipe_stdin == NULL))
{
GNUNET_break (0);
ok = 1;
GNUNET_free (fn);
return;
}
proc =
GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_ERR, hello_pipe_stdin, hello_pipe_stdout, fn,
"test_gnunet_echo_hello", "-", NULL);
GNUNET_free (fn);
/* Close the write end of the read pipe */
GNUNET_DISK_pipe_close_end (hello_pipe_stdout, GNUNET_DISK_PIPE_END_WRITE);
/* Close the read end of the write pipe */
GNUNET_DISK_pipe_close_end (hello_pipe_stdin, GNUNET_DISK_PIPE_END_READ);
wh = GNUNET_DISK_pipe_handle (hello_pipe_stdin, GNUNET_DISK_PIPE_END_WRITE);
/* Write the test_phrase to the cat process */
if (GNUNET_DISK_file_write (wh, test_phrase, strlen (test_phrase) + 1) !=
strlen (test_phrase) + 1)
{
GNUNET_break (0);
ok = 1;
return;
}
/* Close the write end to end the cycle! */
GNUNET_DISK_pipe_close_end (hello_pipe_stdin, GNUNET_DISK_PIPE_END_WRITE);
stdout_read_handle =
GNUNET_DISK_pipe_handle (hello_pipe_stdout, GNUNET_DISK_PIPE_END_READ);
die_task =
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
(GNUNET_TIME_UNIT_MINUTES, 1), &end_task,
NULL);
GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
stdout_read_handle, &read_call,
(void *) stdout_read_handle);
}
/**
* Return unique variant of the namespace name.
* Use it after GNUNET_PSEUDONYM_get_info() to make sure
* that name is unique.
*
* @param cfg configuration
* @param nsid cryptographic ID of the namespace
* @param name name to uniquify
* @param suffix if not NULL, filled with the suffix value
* @return NULL on failure (should never happen), name on success.
* Free the name with GNUNET_free().
*/
char *
GNUNET_PSEUDONYM_name_uniquify (const struct GNUNET_CONFIGURATION_Handle *cfg,
const struct GNUNET_HashCode * nsid, const char *name, unsigned int *suffix)
{
struct GNUNET_HashCode nh;
uint64_t len;
char *fn;
struct GNUNET_DISK_FileHandle *fh;
unsigned int i;
unsigned int idx;
char *ret;
struct stat sbuf;
GNUNET_CRYPTO_hash (name, strlen (name), &nh);
fn = get_data_filename (cfg, PS_NAMES_DIR, &nh);
GNUNET_assert (fn != NULL);
len = 0;
if (0 == STAT (fn, &sbuf))
GNUNET_break (GNUNET_OK == GNUNET_DISK_file_size (fn, &len, GNUNET_YES, GNUNET_YES));
fh = GNUNET_DISK_file_open (fn,
GNUNET_DISK_OPEN_CREATE |
GNUNET_DISK_OPEN_READWRITE,
GNUNET_DISK_PERM_USER_READ |
GNUNET_DISK_PERM_USER_WRITE);
i = 0;
idx = -1;
while ((len >= sizeof (struct GNUNET_HashCode)) &&
(sizeof (struct GNUNET_HashCode) ==
GNUNET_DISK_file_read (fh, &nh, sizeof (struct GNUNET_HashCode))))
{
if (0 == memcmp (&nh, nsid, sizeof (struct GNUNET_HashCode)))
{
idx = i;
break;
}
i++;
len -= sizeof (struct GNUNET_HashCode);
}
if (idx == -1)
{
idx = i;
if (sizeof (struct GNUNET_HashCode) !=
GNUNET_DISK_file_write (fh, nsid, sizeof (struct GNUNET_HashCode)))
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "write", fn);
}
GNUNET_DISK_file_close (fh);
ret = GNUNET_malloc (strlen (name) + 32);
GNUNET_snprintf (ret, strlen (name) + 32, "%s-%u", name, idx);
if (suffix != NULL)
*suffix = idx;
GNUNET_free (fn);
return ret;
}
/**
* Signal handler called for SIGCHLD. Triggers the
* respective handler by writing to the trigger pipe.
*/
static void
sighandler_child_death ()
{
static char c;
int old_errno = errno; /* back-up errno */
GNUNET_break (1 ==
GNUNET_DISK_file_write (GNUNET_DISK_pipe_handle
(sigpipe, GNUNET_DISK_PIPE_END_WRITE),
&c, sizeof (c)));
errno = old_errno; /* restore errno */
}
/**
* Clears a bit from bitArray if the respective usage
* counter on the disk hits/is zero.
*
* @param bitArray memory area to set the bit in
* @param bitIdx which bit to test
* @param fh A file to keep the 4bit address usage counters in
*/
static void
decrementBit (char *bitArray, unsigned int bitIdx,
const struct GNUNET_DISK_FileHandle *fh)
{
off_t fileslot;
unsigned char value;
unsigned int high;
unsigned int low;
unsigned int targetLoc;
if (GNUNET_DISK_handle_invalid (fh))
return; /* cannot decrement! */
/* Each char slot in the counter file holds two 4 bit counters */
fileslot = bitIdx / 2;
targetLoc = bitIdx % 2;
if (GNUNET_SYSERR == GNUNET_DISK_file_seek (fh, fileslot, GNUNET_DISK_SEEK_SET))
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "seek");
return;
}
if (1 != GNUNET_DISK_file_read (fh, &value, 1))
value = 0;
low = value & 0xF;
high = (value & 0xF0) >> 4;
/* decrement, but once we have reached the max, never go back! */
if (targetLoc == 0)
{
if ((low > 0) && (low < 0xF))
low--;
if (low == 0)
{
clearBit (bitArray, bitIdx);
}
}
else
{
if ((high > 0) && (high < 0xF))
high--;
if (high == 0)
{
clearBit (bitArray, bitIdx);
}
}
value = ((high << 4) | low);
if (GNUNET_SYSERR == GNUNET_DISK_file_seek (fh, fileslot, GNUNET_DISK_SEEK_SET))
{
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "seek");
return;
}
GNUNET_assert (1 == GNUNET_DISK_file_write (fh, &value, 1));
}
static int
testOpenClose ()
{
struct GNUNET_DISK_FileHandle *fh;
uint64_t size;
fh = GNUNET_DISK_file_open (".testfile",
GNUNET_DISK_OPEN_READWRITE |
GNUNET_DISK_OPEN_CREATE,
GNUNET_DISK_PERM_USER_READ |
GNUNET_DISK_PERM_USER_WRITE);
GNUNET_assert (GNUNET_NO == GNUNET_DISK_handle_invalid (fh));
GNUNET_break (5 == GNUNET_DISK_file_write (fh, "Hello", 5));
GNUNET_DISK_file_close (fh);
GNUNET_break (GNUNET_OK ==
GNUNET_DISK_file_size (".testfile", &size, GNUNET_NO, GNUNET_YES));
if (size != 5)
return 1;
GNUNET_break (0 == UNLINK (".testfile"));
return 0;
}
/**
* Sets a bit active in the bitArray and increments
* bit-specific usage counter on disk (but only if
* the counter was below 4 bit max (==15)).
*
* @param bitArray memory area to set the bit in
* @param bitIdx which bit to test
* @param fh A file to keep the 4 bit address usage counters in
*/
static void
incrementBit (char *bitArray, unsigned int bitIdx,
const struct GNUNET_DISK_FileHandle *fh)
{
OFF_T fileSlot;
unsigned char value;
unsigned int high;
unsigned int low;
unsigned int targetLoc;
setBit (bitArray, bitIdx);
if (GNUNET_DISK_handle_invalid (fh))
return;
/* Update the counter file on disk */
fileSlot = bitIdx / 2;
targetLoc = bitIdx % 2;
GNUNET_assert (fileSlot ==
GNUNET_DISK_file_seek (fh, fileSlot, GNUNET_DISK_SEEK_SET));
if (1 != GNUNET_DISK_file_read (fh, &value, 1))
value = 0;
low = value & 0xF;
high = (value & (~0xF)) >> 4;
if (targetLoc == 0)
{
if (low < 0xF)
low++;
}
else
{
if (high < 0xF)
high++;
}
value = ((high << 4) | low);
GNUNET_assert (fileSlot ==
GNUNET_DISK_file_seek (fh, fileSlot, GNUNET_DISK_SEEK_SET));
GNUNET_assert (1 == GNUNET_DISK_file_write (fh, &value, 1));
}
/**
* Store values in hashmap in file and free data
*
* @param plugin the plugin context
*/
static int
store_and_free_entries (void *cls,
const struct GNUNET_HashCode *key,
void *value)
{
struct GNUNET_DISK_FileHandle *fh = cls;
struct FlatFileEntry *entry = value;
char *line;
char *block_b64;
struct GNUNET_CRYPTO_HashAsciiEncoded query;
size_t block_size;
block_size = ntohl (entry->block->purpose.size) +
sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey) +
sizeof (struct GNUNET_CRYPTO_EcdsaSignature);
GNUNET_STRINGS_base64_encode ((char*)entry->block,
block_size,
&block_b64);
GNUNET_CRYPTO_hash_to_enc (&entry->query,
&query);
GNUNET_asprintf (&line,
"%s,%s\n",
(char*)&query,
block_b64);
GNUNET_free (block_b64);
GNUNET_DISK_file_write (fh,
line,
strlen (line));
GNUNET_free (entry->block);
GNUNET_free (entry);
return GNUNET_YES;
}
void
GNUNET_ATS_TEST_logging_write_to_file (struct LoggingHandle *l,
char *experiment_name, int plots)
{
struct GNUNET_DISK_FileHandle *f[l->num_slaves];
struct GNUNET_DISK_FileHandle *f_m;
char *tmp_exp_name;
char *filename_master;
char *filename_slaves[l->num_slaves];
char *data;
struct PeerLoggingTimestep *cur_lt;
struct PartnerLoggingTimestep *plt;
struct GNUNET_TIME_Absolute timestamp;
int c_m;
int c_s;
timestamp = GNUNET_TIME_absolute_get();
tmp_exp_name = experiment_name;
for (c_m = 0; c_m < l->num_masters; c_m++)
{
GNUNET_asprintf (&filename_master, "%s_%llu_master%u_%s",
experiment_name, timestamp.abs_value_us, c_m, l->name);
fprintf (stderr, "Writing data for master %u to file `%s'\n",
c_m,filename_master);
f_m = GNUNET_DISK_file_open (filename_master,
GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE,
GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
if (NULL == f_m)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot open log file `%s'\n", filename_master);
GNUNET_free (filename_master);
return;
}
GNUNET_asprintf (&data, "# master %u; experiment : %s\n"
"timestamp; timestamp delta; #messages sent; #bytes sent; #throughput sent; #messages received; #bytes received; #throughput received; \n" ,
c_m, experiment_name);
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f_m, data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot write data to log file `%s'\n",filename_master);
GNUNET_free (data);
for (c_s = 0; c_s < l->lp[c_m].peer->num_partners; c_s++)
{
GNUNET_asprintf (&filename_slaves[c_s], "%s_%llu_master%u_slave_%u_%s",
tmp_exp_name, timestamp.abs_value_us, c_m, c_s, l->name);
fprintf (stderr, "Writing data for master %u slave %u to file `%s'\n",
c_m, c_s, filename_slaves[c_s]);
f[c_s] = GNUNET_DISK_file_open (filename_slaves[c_s],
GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE,
GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
if (NULL == f[c_s])
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot open log file `%s'\n", filename_slaves[c_s]);
GNUNET_free (filename_slaves[c_s]);
GNUNET_break (GNUNET_OK == GNUNET_DISK_file_close(f_m));
GNUNET_free (filename_master);
return;
}
/* Header */
GNUNET_asprintf (&data, "# master %u; slave %u ; experiment : %s\n"
"timestamp; timestamp delta; #messages sent; #bytes sent; #throughput sent; #messages received; #bytes received; #throughput received; " \
"rtt; bw in; bw out; ats_cost_lan; ats_cost_wlan; ats_delay; ats_distance; ats_network_type; ats_utilization_up ;ats_utilization_down;" \
"pref bandwidth; pref delay\n",
c_m, c_s, experiment_name);
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f[c_s], data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot write data to log file `%s'\n",filename_slaves[c_s]);
GNUNET_free (data);
}
for (cur_lt = l->lp[c_m].head; NULL != cur_lt; cur_lt = cur_lt->next)
{
if (l->verbose)
fprintf (stderr,
"Master [%u]: timestamp %llu %llu ; %u %u %u ; %u %u %u\n",
l->lp[c_m].peer->no,
(long long unsigned int) cur_lt->timestamp.abs_value_us,
(long long unsigned int) GNUNET_TIME_absolute_get_difference(l->lp[c_m].start,
cur_lt->timestamp).rel_value_us / 1000,
cur_lt->total_messages_sent,
cur_lt->total_bytes_sent,
cur_lt->total_throughput_send,
cur_lt->total_messages_received,
cur_lt->total_bytes_received,
cur_lt->total_throughput_recv);
/* Assembling master string */
GNUNET_asprintf (&data, "%llu;%llu;%u;%u;%u;%u;%u;%u;\n",
(long long unsigned int) cur_lt->timestamp.abs_value_us,
(long long unsigned int) GNUNET_TIME_absolute_get_difference(l->lp[c_m].start,
cur_lt->timestamp).rel_value_us / 1000,
cur_lt->total_messages_sent,
cur_lt->total_bytes_sent,
cur_lt->total_throughput_send,
cur_lt->total_messages_received,
cur_lt->total_bytes_received,
cur_lt->total_throughput_recv);
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f_m, data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot write data to master file %u\n", c_m);
GNUNET_free (data);
for (c_s = 0; c_s < l->lp[c_m].peer->num_partners; c_s++)
{
plt = &cur_lt->slaves_log[c_s];
/* Log partners */
/* Assembling slave string */
GNUNET_asprintf(&data,
"%llu;%llu;%u;%u;%u;%u;%u;%u;%.3f;%u;%u;%u;%u;%u;%u;%u;%.3f;%.3f\n",
(long long unsigned int) cur_lt->timestamp.abs_value_us,
(long long unsigned int) GNUNET_TIME_absolute_get_difference(l->lp[c_m].start,
cur_lt->timestamp).rel_value_us / 1000,
plt->total_messages_sent,
plt->total_bytes_sent,
plt->throughput_sent,
plt->total_messages_received,
plt->total_bytes_received,
plt->throughput_recv,
(double) plt->app_rtt / 1000,
plt->bandwidth_in,
plt->bandwidth_out,
plt->ats_delay,
plt->ats_distance,
plt->ats_network_type,
plt->ats_utilization_out,
plt->ats_utilization_in,
plt->pref_bandwidth,
plt->pref_delay);
if (l->verbose)
fprintf (stderr,
"\t Slave [%u]: %u %u %u ; %u %u %u rtt %u delay %llu bw_in %u bw_out %u \n",
plt->slave->no,
plt->total_messages_sent,
plt->total_bytes_sent,
plt->throughput_sent,
plt->total_messages_received,
plt->total_bytes_received,
plt->throughput_recv,
plt->app_rtt,
(long long unsigned int) plt->ats_delay.rel_value_us,
plt->bandwidth_in,
plt->bandwidth_out);
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f[c_s], data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot write data to log file `%s'\n", filename_slaves[c_s]);
GNUNET_free (data);
}
}
for (c_s = 0; c_s < l->lp[c_m].peer->num_partners; c_s++)
{
if (GNUNET_SYSERR == GNUNET_DISK_file_close(f[c_s]))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot close log file for master[%u] slave[%u]\n", c_m, c_s);
continue;
}
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Data file successfully written to log file for `%s'\n",
filename_slaves[c_s]);
}
if (GNUNET_SYSERR == GNUNET_DISK_file_close(f_m))
{
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
"close",
filename_master);
GNUNET_free (filename_master);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Data file successfully written to log file for master `%s'\n", filename_master);
if (GNUNET_YES == plots)
{
write_throughput_gnuplot_script (filename_master, &l->lp[c_m], filename_slaves, l->num_slaves);
write_rtt_gnuplot_script (filename_master, &l->lp[c_m], filename_slaves, l->num_slaves);
write_bw_gnuplot_script (filename_master, &l->lp[c_m], filename_slaves, l->num_slaves);
}
}
GNUNET_free (filename_master);
}
static void
write_throughput_gnuplot_script (char * fn, struct LoggingPeer *lp, char **fs, int slaves)
{
struct GNUNET_DISK_FileHandle *f;
char * gfn;
char *data;
int c_s;
GNUNET_asprintf (&gfn, "gnuplot_throughput_%s",fn);
fprintf (stderr, "Writing throughput plot for master %u and %u slaves to `%s'\n",
lp->peer->no, slaves, gfn);
f = GNUNET_DISK_file_open (gfn,
GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE,
GNUNET_DISK_PERM_USER_EXEC | GNUNET_DISK_PERM_USER_READ |
GNUNET_DISK_PERM_USER_WRITE);
if (NULL == f)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot open gnuplot file `%s'\n", gfn);
GNUNET_free (gfn);
return;
}
/* Write header */
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f, THROUGHPUT_TEMPLATE,
strlen(THROUGHPUT_TEMPLATE)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot write data to plot file `%s'\n", gfn);
/* Write master data */
GNUNET_asprintf (&data,
"plot '%s' using 2:%u with lines title 'Master %u send total', \\\n" \
"'%s' using 2:%u with lines title 'Master %u receive total', \\\n",
fn, LOG_ITEMS_TIME + LOG_ITEM_THROUGHPUT_SENT, lp->peer->no,
fn, LOG_ITEMS_TIME + LOG_ITEM_THROUGHPUT_RECV, lp->peer->no);
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f, data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot write data to plot file `%s'\n", gfn);
GNUNET_free (data);
for (c_s = 0; c_s < slaves; c_s++)
{
GNUNET_asprintf (&data, "'%s' using 2:%u with lines title 'Master %u - Slave %u send', \\\n" \
"'%s' using 2:%u with lines title 'Master %u - Slave %u receive'%s\n",
fs[c_s],
LOG_ITEMS_TIME + LOG_ITEM_THROUGHPUT_SENT,
lp->peer->no,
lp->peer->partners[c_s].dest->no,
fs[c_s],
LOG_ITEMS_TIME + LOG_ITEM_THROUGHPUT_RECV,
lp->peer->no,
lp->peer->partners[c_s].dest->no,
(c_s < lp->peer->num_partners -1) ? ", \\" : "\n pause -1");
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f, data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot write data to plot file `%s'\n", gfn);
GNUNET_free (data);
}
if (GNUNET_SYSERR == GNUNET_DISK_file_close(f))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Cannot close gnuplot file `%s'\n", gfn);
else
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Data successfully written to plot file `%s'\n", gfn);
GNUNET_free (gfn);
}
int
main (int argc, char *argv[])
{
struct GNUNET_DISK_FileHandle *fh;
struct GNUNET_HELLO_Message *orig;
struct GNUNET_HELLO_Message *result;
struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pk;
uint64_t fsize;
GNUNET_log_setup ("gnunet-hello", "INFO", NULL);
if (argc != 2)
{
FPRINTF (stderr,
"%s",
_("Call with name of HELLO file to modify.\n"));
return 1;
}
if (GNUNET_OK != GNUNET_DISK_file_size (argv[1], &fsize, GNUNET_YES, GNUNET_YES))
{
FPRINTF (stderr,
_("Error accessing file `%s': %s\n"),
argv[1],
STRERROR (errno));
return 1;
}
if (fsize > 65536)
{
FPRINTF (stderr,
_("File `%s' is too big to be a HELLO\n"),
argv[1]);
return 1;
}
if (fsize < sizeof (struct GNUNET_MessageHeader))
{
FPRINTF (stderr,
_("File `%s' is too small to be a HELLO\n"),
argv[1]);
return 1;
}
fh = GNUNET_DISK_file_open (argv[1],
GNUNET_DISK_OPEN_READ,
GNUNET_DISK_PERM_USER_READ);
if (NULL == fh)
{
FPRINTF (stderr,
_("Error opening file `%s': %s\n"),
argv[1],
STRERROR (errno));
return 1;
}
{
char buf[fsize] GNUNET_ALIGN;
GNUNET_assert (fsize ==
GNUNET_DISK_file_read (fh, buf, fsize));
GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_close (fh));
orig = (struct GNUNET_HELLO_Message *) buf;
if ( (fsize != GNUNET_HELLO_size (orig)) ||
(GNUNET_OK != GNUNET_HELLO_get_key (orig, &pk)) )
{
FPRINTF (stderr,
_("Did not find well-formed HELLO in file `%s'\n"),
argv[1]);
return 1;
}
result = GNUNET_HELLO_create (&pk, &add_from_hello, &orig);
GNUNET_assert (NULL != result);
fh = GNUNET_DISK_file_open (argv[1],
GNUNET_DISK_OPEN_WRITE,
GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
if (NULL == fh)
{
FPRINTF (stderr,
_("Error opening file `%s': %s\n"),
argv[1],
STRERROR (errno));
GNUNET_free (result);
return 1;
}
fsize = GNUNET_HELLO_size (result);
if (fsize != GNUNET_DISK_file_write (fh,
result,
fsize))
{
FPRINTF (stderr,
_("Error writing HELLO to file `%s': %s\n"),
argv[1],
STRERROR (errno));
(void) GNUNET_DISK_file_close (fh);
return 1;
}
GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_close (fh));
}
return 0;
}
/**
* Create a new private key by reading it from a file. If the
* files does not exist, create a new key and write it to the
* file. Caller must free return value. Note that this function
* can not guarantee that another process might not be trying
* the same operation on the same file at the same time.
* If the contents of the file
* are invalid the old file is deleted and a fresh key is
* created.
*
* @param filename name of file to use to store the key
* @return new private key, NULL on error (for example,
* permission denied)
*/
struct GNUNET_CRYPTO_EddsaPrivateKey *
GNUNET_CRYPTO_eddsa_key_create_from_file (const char *filename)
{
struct GNUNET_CRYPTO_EddsaPrivateKey *priv;
struct GNUNET_DISK_FileHandle *fd;
unsigned int cnt;
int ec;
uint64_t fs;
if (GNUNET_SYSERR == GNUNET_DISK_directory_create_for_file (filename))
return NULL;
while (GNUNET_YES != GNUNET_DISK_file_test (filename))
{
fd = GNUNET_DISK_file_open (filename,
GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE
| GNUNET_DISK_OPEN_FAILIFEXISTS,
GNUNET_DISK_PERM_USER_READ |
GNUNET_DISK_PERM_USER_WRITE);
if (NULL == fd)
{
if (EEXIST == errno)
{
if (GNUNET_YES != GNUNET_DISK_file_test (filename))
{
/* must exist but not be accessible, fail for good! */
if (0 != ACCESS (filename, R_OK))
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "access", filename);
else
GNUNET_break (0); /* what is going on!? */
return NULL;
}
continue;
}
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "open", filename);
return NULL;
}
cnt = 0;
while (GNUNET_YES !=
GNUNET_DISK_file_lock (fd, 0,
sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey),
GNUNET_YES))
{
short_wait ();
if (0 == ++cnt % 10)
{
ec = errno;
LOG (GNUNET_ERROR_TYPE_ERROR,
_("Could not acquire lock on file `%s': %s...\n"), filename,
STRERROR (ec));
}
}
LOG (GNUNET_ERROR_TYPE_INFO,
_("Creating a new private key. This may take a while.\n"));
priv = GNUNET_CRYPTO_eddsa_key_create ();
GNUNET_assert (NULL != priv);
GNUNET_assert (sizeof (*priv) ==
GNUNET_DISK_file_write (fd, priv, sizeof (*priv)));
GNUNET_DISK_file_sync (fd);
if (GNUNET_YES !=
GNUNET_DISK_file_unlock (fd, 0,
sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey)))
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
GNUNET_assert (GNUNET_YES == GNUNET_DISK_file_close (fd));
return priv;
}
/* key file exists already, read it! */
fd = GNUNET_DISK_file_open (filename, GNUNET_DISK_OPEN_READ,
GNUNET_DISK_PERM_NONE);
if (NULL == fd)
{
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "open", filename);
return NULL;
}
cnt = 0;
while (1)
{
if (GNUNET_YES !=
GNUNET_DISK_file_lock (fd, 0,
sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey),
GNUNET_NO))
{
if (0 == ++cnt % 60)
{
ec = errno;
LOG (GNUNET_ERROR_TYPE_ERROR,
_("Could not acquire lock on file `%s': %s...\n"), filename,
STRERROR (ec));
LOG (GNUNET_ERROR_TYPE_ERROR,
_
("This may be ok if someone is currently generating a private key.\n"));
}
short_wait ();
continue;
}
if (GNUNET_YES != GNUNET_DISK_file_test (filename))
{
/* eh, what!? File we opened is now gone!? */
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "stat", filename);
if (GNUNET_YES !=
GNUNET_DISK_file_unlock (fd, 0,
sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey)))
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_close (fd));
return NULL;
}
if (GNUNET_OK != GNUNET_DISK_file_size (filename, &fs, GNUNET_YES, GNUNET_YES))
fs = 0;
if (fs < sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey))
{
/* maybe we got the read lock before the key generating
* process had a chance to get the write lock; give it up! */
if (GNUNET_YES !=
GNUNET_DISK_file_unlock (fd, 0,
sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey)))
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
if (0 == ++cnt % 10)
{
LOG (GNUNET_ERROR_TYPE_ERROR,
_("When trying to read key file `%s' I found %u bytes but I need at least %u.\n"),
filename, (unsigned int) fs,
(unsigned int) sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey));
LOG (GNUNET_ERROR_TYPE_ERROR,
_("This may be ok if someone is currently generating a key.\n"));
}
short_wait (); /* wait a bit longer! */
continue;
}
break;
}
fs = sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey);
priv = GNUNET_malloc (fs);
GNUNET_assert (fs == GNUNET_DISK_file_read (fd, priv, fs));
if (GNUNET_YES !=
GNUNET_DISK_file_unlock (fd, 0,
sizeof (struct GNUNET_CRYPTO_EddsaPrivateKey)))
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "fcntl", filename);
GNUNET_assert (GNUNET_YES == GNUNET_DISK_file_close (fd));
return priv;
}
/**
* Write to the helper-process
*
* @param cls handle to the helper process
*/
static void
helper_write (void *cls)
{
struct GNUNET_HELPER_Handle *h = cls;
struct GNUNET_HELPER_SendHandle *sh;
const char *buf;
ssize_t t;
h->write_task = NULL;
if (NULL == (sh = h->sh_head))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Helper write had no work!\n");
return; /* how did this happen? */
}
buf = (const char*) sh->msg;
t = GNUNET_DISK_file_write (h->fh_to_helper,
&buf[sh->wpos],
ntohs (sh->msg->size) - sh->wpos);
if (-1 == t)
{
/* On write-error, restart the helper */
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
_("Error writing to `%s': %s\n"),
h->binary_name,
STRERROR (errno));
if (NULL != h->exp_cb)
{
h->exp_cb (h->cb_cls);
GNUNET_HELPER_stop (h, GNUNET_NO);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Stopping and restarting helper task!\n");
stop_helper (h, GNUNET_NO);
/* Restart the helper */
h->restart_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
h->retry_back_off),
&restart_task, h);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Transmitted %u bytes to %s\n",
(unsigned int) t,
h->binary_name);
sh->wpos += t;
if (sh->wpos == ntohs (sh->msg->size))
{
GNUNET_CONTAINER_DLL_remove (h->sh_head,
h->sh_tail,
sh);
if (NULL != sh->cont)
sh->cont (sh->cont_cls, GNUNET_YES);
GNUNET_free (sh);
}
if (NULL != h->sh_head)
h->write_task = GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
h->fh_to_helper,
&helper_write,
h);
}
