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acceptutils_ucspitls.c
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acceptutils_ucspitls.c
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#include "case.h"
#include "env.h"
#include "fd.h"
#include "readwrite.h"
#include "scan.h"
#include "substdio.h"
#include "acceptutils_stralloc.h"
#include "acceptutils_ucspitls.h"
int ucspitls_level_configured(void) {
char *ucspitls = env_get("UCSPITLS");
char *disabletls = env_get("DISABLETLS");
env_unset("UCSPITLS");
env_unset("DISABLETLS");
if (disabletls || !ucspitls || !case_diffs(ucspitls,"-"))
return UCSPITLS_UNAVAILABLE;
if (!case_diffs(ucspitls,"!")) return UCSPITLS_REQUIRED;
return UCSPITLS_AVAILABLE;
}
static int get_fd_for(char *name) {
unsigned long fd;
char *fdstr;
if (!(fdstr = env_get(name))) return 0;
if (!scan_ulong(fdstr,&fd)) return 0;
return (int)fd;
}
static int notify_control_socket() {
unsigned int fd = get_fd_for("SSLCTLFD");
if (!fd) return 0;
if (write(fd, "Y", 1) < 1) return 0;
return 1;
}
static int adjust_read_fd() {
unsigned int fd = get_fd_for("SSLREADFD");
if (!fd) return 0;
if (fd_move(0,fd) == -1) return 0;
return 1;
}
static int adjust_write_fd() {
unsigned int fd = get_fd_for("SSLWRITEFD");
if (!fd) return 0;
if (fd_move(1,fd) == -1) return 0;
return 1;
}
int tls_init(void) {
return notify_control_socket() && adjust_read_fd() && adjust_write_fd();
}
int tls_info(void (*die_nomem)(const char *caller,const char *alloc_fn)) {
unsigned long fd;
char envbuf[SUBSTDIO_INSIZE];
char *x;
int j;
stralloc ssl_env = {0};
stralloc ssl_parm = {0};
stralloc ssl_value = {0};
fd = get_fd_for("SSLCTLFD");
if (!fd) return 0;
while ((j = read(fd,envbuf,SUBSTDIO_INSIZE)) > 0) {
catb(&ssl_env,envbuf,j);
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_nomem(__func__,"read");
if (ssl_env.len == 0) return 0;
x = ssl_env.s;
for (j=0;j < ssl_env.len-1;++j) {
if ( *x != '=' ) {
catb(&ssl_parm,x,1);
x++;
} else {
append0(&ssl_parm);
x++;
for (;j < ssl_env.len-j-1;++j) {
if ( *x != '\0' ) {
catb(&ssl_value,x,1);
x++;
} else {
append0(&ssl_value);
x++;
if (!env_put2(ssl_parm.s,ssl_value.s))
die_nomem(__func__,"env_put2");
ssl_parm.len = 0;
ssl_value.len = 0;
break;
}
}
}
}
return j;
}