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/**
@file rexmpp_jid.c
@brief JID parsing and manipulation
@author defanor <defanor@uberspace.net>
@date 2020
@copyright MIT license.
*/
#include <stddef.h>
#include <string.h>
#include "rexmpp_jid.h"
int rexmpp_jid_parse (const char *str, struct rexmpp_jid *jid) {
const char *resource = NULL, *domain = NULL;
size_t i;
size_t resource_len = 0, local_len = 0;
size_t domain_len, bare_len, full_len = strlen(str);
domain_len = full_len;
bare_len = full_len;
/* Find the separators. */
for (i = 0; i < full_len; i++) {
if (local_len == 0 && str[i] == '@') {
local_len = i;
domain_len -= local_len + 1;
domain = str + i + 1;
}
if (str[i] == '/') {
resource_len = full_len - i - 1;
domain_len -= resource_len + 1;
bare_len -= resource_len + 1;
resource = str + i + 1;
break;
}
}
/* Check all the lengths. */
if (full_len > 3071 || bare_len > 2047 ||
local_len > 1023 || resource_len > 1023 ||
domain_len > 1023 || domain_len < 1) {
return -1;
}
/* Copy all the parts. */
strncpy(jid->full, str, full_len);
jid->full[full_len] = '\0';
strncpy(jid->bare, str, bare_len);
jid->bare[bare_len] = '\0';
strncpy(jid->local, str, local_len);
jid->local[local_len] = '\0';
strncpy(jid->domain, domain, domain_len);
jid->domain[domain_len] = '\0';
strncpy(jid->resource, resource, resource_len);
jid->resource[resource_len] = '\0';
return 0;
}
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