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output: add json format support

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Reviewed-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Gilles Bouthenot <gilles.bouthenot@univ-fcomte.fr>
This commit is contained in:
Gilles Bouthenot 2012-12-04 17:17:14 +01:00 • committed by Sami Kerola
parent 179e2ac147
commit a302bc6829
7 changed files with 156 additions and 5 deletions
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136
src/output.c
View file

@ -322,6 +322,142 @@ int output_xml(void)
return 0;
}
int output_json(void)
{
unsigned int i;
struct range_t *range_p;
unsigned long range_size;
struct shared_network_t *shared_p;
struct macaddr_t *macaddr_p;
int ret;
FILE *outfile;
char sep;
if (config.output_file[0]) {
outfile = fopen(config.output_file, "w+");
if (outfile == NULL) {
err(EXIT_FAILURE, "output_json: %s",
config.output_file);
}
} else {
outfile = stdout;
}
range_p = ranges;
range_size = get_range_size(range_p);
shared_p = shared_networks;
sep = ' ';
fprintf(outfile, "{\n");
if (macaddr != NULL) {
fprintf(outfile, " %c\"active_leases\": [\n", sep);
for (i = 0, macaddr_p = macaddr; macaddr_p->next != NULL;
macaddr_p = macaddr_p->next) {
if (0 != i) {
fprintf(outfile, ",\n ");
} else {
fprintf(outfile, "\n ");
}
fprintf(outfile,
"{ \"ip\":\"%s\", \"macaddress\":\"%s\" }",
macaddr_p->ip, macaddr_p->ethernet);
i++;
}
fprintf(outfile, "\n ]"); /* end of active_leases */
sep = ',';
}
if (config.output_limit[1] & output_limit_bit_1) {
if (sep == ',')
printf(",\n");
fprintf(outfile, " \"subnets\": [\n");
for (i = 0; i < num_ranges; i++) {
fprintf(outfile, " ");
fprintf(outfile, "{ ");
if (range_p->shared_net) {
fprintf(outfile,
"\"location\":\"%s\", ",
range_p->shared_net->name);
} else {
fprintf(outfile, "\"location\":\"\", ");
}
fprintf(outfile, "\"network\":\"\", ");
fprintf(outfile, "\"netmask\":\"\", ");
fprintf(outfile, "\"range\":\"%s\", ",
ntop_ipaddr(&range_p->first_ip));
fprintf(outfile, "\"gateway\":\"\", ");
fprintf(outfile, "\"defined\":%lu, ", range_size);
fprintf(outfile, "\"used\":%lu, ", range_p->count);
fprintf(outfile, "\"free\":%lu ",
range_size - range_p->count);
range_p++;
range_size = get_range_size(range_p);
if (i + 1 < num_ranges)
fprintf(outfile, "},\n");
else
fprintf(outfile, "}\n");
}
fprintf(outfile, " ]"); /* end of subnets */
sep = ',';
}
if (config.output_limit[1] & output_limit_bit_2) {
if (sep == ',')
printf(",\n");
fprintf(outfile, " \"shared-networks\": [\n");
for (i = 0; i < num_shared_networks; i++) {
fprintf(outfile, " ");
shared_p++;
fprintf(outfile, "{ ");
fprintf(outfile, "\"location\":\"%s\", ",
shared_p->name);
fprintf(outfile, "\"defined\":%lu, ",
shared_p->available);
fprintf(outfile, "\"used\":%lu, ", shared_p->used);
fprintf(outfile, "\"free\":%lu ",
shared_p->available - shared_p->used);
if (i + 1 < num_shared_networks)
fprintf(outfile, "},\n");
else
fprintf(outfile, "}\n");
}
fprintf(outfile, " ]"); /* end of shared-networks */
sep = ',';
}
if (config.output_limit[0] & output_limit_bit_3) {
if (sep == ',')
printf(",\n");
fprintf(outfile, " \"summary\": {\n");
fprintf(outfile, " \"location\":\"%s\",\n",
shared_networks->name);
fprintf(outfile, " \"defined\":%lu,\n",
shared_networks->available);
fprintf(outfile, " \"used\":%lu,\n",
shared_networks->used);
fprintf(outfile, " \"free\":%lu\n",
shared_networks->available - shared_networks->used);
fprintf(outfile, " }"); /* end of summary */
}
fprintf(outfile, "\n}");
if (outfile == stdout) {
ret = fflush(stdout);
if (ret) {
warn("output_json: fflush");
}
} else {
ret = close_stream(outfile);
if (ret) {
warn("output_json: fclose");
}
}
return 0;
}
static void html_header(FILE *restrict f)
{
char outstr[200];