/* read_user_passwd LOCALPART DOMAIN
* Read the password hash from the proper flat file for the given LOCALPART and
* DOMAIN. Returns the password or NULL if not found. The files are structured
* with colon-separated fields, where the first field is the local-part and the
* second field to the password hash. Any subsequent fields are ignored. */
static char *read_user_passwd(const char *local_part, const char *domain) {
FILE *fp = NULL;
char *filename = NULL, *result = NULL;
struct sverr err;
static char *buf, *pwhash;
static size_t buflen;
size_t i, linenum;
int c;
if (!(filename = substitute_variables(user_passwd_file_template, &err, 1, "domain", domain))) {
log_print(LOG_ERR, _("read_user_passwd: %s near `%.16s'"), err.msg, user_passwd_file_template + err.offset);
goto fail;
}
if (!(fp = fopen(filename, "rt"))) {
log_print(LOG_ERR, _("read_user_passwd: flat file %s: %m"), filename);
goto fail;
}
/* Read lines from the file. */
if (!buf)
buf = xmalloc(buflen = 1024);
linenum = 0;
while (1) {
char *user, *end;
i = 0;
while ((c = getc(fp)) != EOF) {
if (c == '\n')
break;
buf[i++] = (char)c;
if (i == buflen)
buf = xrealloc(buf, buflen *= 2);
}
buf[i] = 0;
if (c == EOF) {
if (ferror(fp)) {
/* Read error. */
log_print(LOG_ERR, _("read_user_passwd: flat file %s: %m"), filename);
goto fail;
} else if (i == 0)
/* Read nothing at end of file. */
break;
}
/* OK, have a line. */
user = buf;
pwhash = strchr(buf, ':');
if (!pwhash) {
log_print(LOG_WARNING, _("read_user_passwd: flat file %s: line %u: bad format (missing :)"), filename, (unsigned)linenum);
continue;
}
*pwhash++ = 0;
/* Check username. */
if (strcmp(user, local_part) != 0)
continue;
if ((end = strchr(pwhash, ':')))
*end = 0;
result = pwhash;
break;
}
fail:
if (fp)
fclose(fp);
if (filename)
xfree(filename);
return result;
}
std::string getWithSubst(const std::string & key) const
{
return substitute_variables(get<std::string>(key));
}
