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#include <unistd.h>
#include "env.h"
#include "fd.h"
#include "logmsg.h"
#include "open.h"
#include "scan.h"
#include "stralloc.h"
#define WHO "tls_start"
#define BUFSIZE 8192
static void die_nomem()
{
logmsg(WHO, 111, FATAL, "out of memory");
}
static void die_tlsenv()
{
logmsg(WHO, 111, FATAL, "no UCSPITLS environment to read");
}
int starttls_init(void)
{
unsigned long fd;
char *fdstr;
if (!(fdstr = env_get("SSLCTLFD"))) return 0;
if (!scan_ulong(fdstr, &fd)) return 0;
if (write((int)fd, "Y", 1) < 1) return 0;
if (!(fdstr = env_get("SSLREADFD"))) return 0;
if (!scan_ulong(fdstr, &fd)) return 0;
if (fd_move(0, (int)fd) == -1) return 0;
if (!(fdstr = env_get("SSLWRITEFD"))) return 0;
if (!scan_ulong(fdstr, &fd)) return 0;
if (fd_move(1, (int)fd) == -1) return 0;
return 1;
}
int starttls_info(void)
{
unsigned long fd;
char *fdstr;
char envbuf[BUFSIZE];
char *x;
int j;
stralloc ssl_env = {0};
stralloc ssl_parm = {0};
stralloc ssl_value = {0};
if (!(fdstr = env_get("SSLCTLFD"))) return 0;
if (!scan_ulong(fdstr, &fd)) return 0;
while ((j = read(fd, envbuf, BUFSIZE)) > 0) {
if (!stralloc_catb(&ssl_env, envbuf, j)) die_nomem();
if (ssl_env.len >= 2 && ssl_env.s[ssl_env.len - 2] == 0 && ssl_env.s[ssl_env.len - 1] == 0) break;
}
if (j <= 0) {
die_tlsenv();
return 0;
} // nothing to read
x = ssl_env.s;
for (j = 0; j < ssl_env.len - 1; ++j) {
if (*x != '=') {
if (!stralloc_catb(&ssl_parm, x, 1)) die_nomem();
x++;
} else {
if (!stralloc_0(&ssl_parm)) die_nomem();
x++;
for (; j < ssl_env.len - j - 1; ++j) {
if (*x != '\0') {
if (!stralloc_catb(&ssl_value, x, 1)) die_nomem();
x++;
} else {
if (!stralloc_0(&ssl_value)) die_nomem();
x++;
if (!env_put(ssl_parm.s, ssl_value.s)) die_nomem();
ssl_parm.len = 0;
ssl_value.len = 0;
break;
}
}
}
}
return j;
}
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