int libwrap_init() {
#ifdef USE_PTHREAD
int i, j, rfd, result;
char servname[SERVNAME_LEN];
static int initialized=0;
SERVICE_OPTIONS *opt;
if(initialized) /* during startup or previous configuration file reload */
return 0;
for(opt=service_options.next; opt; opt=opt->next)
if(opt->option.libwrap) /* libwrap is enabled for this service */
break;
if(!opt) /* disabled for all sections or inetd mode (no sections) */
return 0;
num_processes=LIBWRAP_CLIENTS;
ipc_socket=str_alloc(2*num_processes*sizeof(int));
busy=str_alloc(num_processes*sizeof(int));
for(i=0; i<num_processes; ++i) { /* spawn a child */
if(s_socketpair(AF_UNIX, SOCK_STREAM, 0, ipc_socket+2*i, 0, "libwrap_init"))
return 1;
switch(fork()) {
case -1: /* error */
ioerror("fork");
return 1;
case 0: /* child */
drop_privileges(0); /* libwrap processes are not chrooted */
close(0); /* stdin */
close(1); /* stdout */
if(!global_options.option.foreground) /* for logging in read_fd */
close(2); /* stderr */
for(j=0; j<=i; ++j) /* close parent-side sockets created so far */
close(ipc_socket[2*j]);
while(1) { /* main libwrap child loop */
if(read_fd(ipc_socket[2*i+1], servname, SERVNAME_LEN, &rfd)<=0)
_exit(0);
result=check(servname, rfd);
write(ipc_socket[2*i+1], (u8 *)&result, sizeof result);
if(rfd>=0)
close(rfd);
}
default: /* parent */
close(ipc_socket[2*i+1]); /* child-side socket */
}
}
initialized=1;
#endif /* USE_PTHREAD */
return 0;
}
NOEXPORT void win_log(LPSTR line) {
struct LIST *curr;
int len;
static int log_len=0;
LPTSTR txt;
txt=str2tstr(line);
len=_tcslen(txt);
/* this list is shared between threads */
curr=str_alloc(sizeof(struct LIST)+len*sizeof(TCHAR));
curr->len=len;
_tcscpy(curr->txt, txt);
str_free(txt);
curr->next=NULL;
if(tail)
tail->next=curr;
tail=curr;
if(!head)
head=tail;
log_len++;
while(log_len>LOG_LINES) {
curr=head;
head=head->next;
/* this list is shared between threads */
str_free(curr);
log_len--;
}
new_logs=1;
}
static SOCKADDR_LIST *dynamic_remote_addr(CLI *c) {
#ifdef SO_ORIGINAL_DST
socklen_t addrlen=sizeof(SOCKADDR_UNION);
#endif /* SO_ORIGINAL_DST */
/* check if the address was already set by a dynamic protocol
* implemented protocols: CONNECT
* protocols to be implemented: SOCKS4 */
if(c->connect_addr.num)
return &c->connect_addr;
#ifdef SO_ORIGINAL_DST
if(c->opt->option.transparent_dst) {
c->connect_addr.num=1;
c->connect_addr.addr=str_alloc(sizeof(SOCKADDR_UNION));
if(getsockopt(c->local_rfd.fd, SOL_IP, SO_ORIGINAL_DST,
c->connect_addr.addr, &addrlen)) {
sockerror("setsockopt SO_ORIGINAL_DST");
longjmp(c->err, 1);
}
return &c->connect_addr;
}
#endif /* SO_ORIGINAL_DST */
if(c->opt->option.delayed_lookup) {
if(!name2addrlist(&c->connect_addr,
c->opt->connect_name, DEFAULT_LOOPBACK)) {
s_log(LOG_ERR, "No host resolved");
longjmp(c->err, 1);
}
return &c->connect_addr;
}
return &c->opt->connect_addr; /* use pre-resolved (static) addresses */
}
DISK_FILE *file_open(char *name, FILE_MODE mode) {
DISK_FILE *df;
LPTSTR tstr;
HANDLE fh;
DWORD desired_access, creation_disposition;
/* open file */
switch(mode) {
case FILE_MODE_READ:
desired_access=FILE_READ_DATA;
creation_disposition=OPEN_EXISTING;
break;
case FILE_MODE_APPEND:
desired_access=FILE_APPEND_DATA;
creation_disposition=OPEN_ALWAYS;
break;
case FILE_MODE_OVERWRITE:
desired_access=FILE_WRITE_DATA;
creation_disposition=CREATE_ALWAYS;
break;
default: /* invalid mode */
return NULL;
}
tstr=str2tstr(name);
fh=CreateFile(tstr, desired_access, FILE_SHARE_READ, NULL,
creation_disposition, FILE_ATTRIBUTE_NORMAL, (HANDLE)NULL);
str_free(tstr); /* str_free() overwrites GetLastError() value */
if(fh==INVALID_HANDLE_VALUE)
return NULL;
/* setup df structure */
df=str_alloc(sizeof df);
df->fh=fh;
return df;
}
DISK_FILE *file_open(char *name, int wr) {
DISK_FILE *df;
int fd, flags;
/* open file */
if(wr)
flags=O_CREAT|O_WRONLY|O_APPEND;
else
flags=O_RDONLY;
#ifdef O_NONBLOCK
flags|=O_NONBLOCK;
#elif defined O_NDELAY
flags|=O_NDELAY;
#endif
#ifdef O_CLOEXEC
flags|=O_CLOEXEC;
#endif /* O_CLOEXEC */
fd=open(name, flags, 0640);
if(fd<0) {
ioerror(name);
return NULL;
}
/* setup df structure */
df=str_alloc(sizeof df);
df->fd=fd;
return df;
}
static void log_time(const int level, const char *txt, ASN1_TIME *t) {
#ifndef HAVE_LIB_CYASSL
char *cp;
BIO *bio;
int n;
if(!t)
return;
bio=BIO_new(BIO_s_mem());
if(!bio)
return;
ASN1_TIME_print(bio, t);
n=BIO_pending(bio);
cp=str_alloc(n+1);
n=BIO_read(bio, cp, n);
if(n<0) {
BIO_free(bio);
str_free(cp);
return;
}
cp[n]='\0';
BIO_free(bio);
s_log(level, "%s: %s", txt, cp);
str_free(cp);
#else
s_log(level, "%s: N/A", txt);
#endif
}
DISK_FILE *file_fdopen(int fd) {
DISK_FILE *df;
df=str_alloc(sizeof(DISK_FILE));
df->fd=fd;
return df;
}
char *ssl_getline(CLI *c) { /* get newline-terminated string */
char *line;
size_t ptr=0, allocated=32;
line=str_alloc(allocated);
for(;;) {
if(ptr>65536) { /* >64KB --> DoS protection */
s_log(LOG_ERR, "ssl_getline: Line too long");
str_free(line);
longjmp(c->err, 1);
}
if(allocated<ptr+1) {
allocated*=2;
line=str_realloc(line, allocated);
}
s_ssl_read(c, line+ptr, 1);
if(line[ptr]=='\r')
continue;
if(line[ptr]=='\n')
break;
if(line[ptr]=='\0')
break;
++ptr;
}
line[ptr]='\0';
s_log(LOG_DEBUG, " <- %s", line);
return line;
}
gtf_row_t* gtf_row_alloc()
{
gtf_row_t* row = malloc_or_die(sizeof(gtf_row_t));
row->seqname = str_alloc();
row->source = str_alloc();
row->feature = str_alloc();
row->start = -1;
row->end = -1;
row->score = 0.0;
row->strand = strand_na;
row->frame = -1;
row->attributes = str_map_create();
return row;
}
static CONTEXT *new_context(void) {
static int next_id=1;
CONTEXT *context;
/* allocate and fill the CONTEXT structure */
context=str_alloc(sizeof(CONTEXT));
if(!context) {
s_log(LOG_ERR, "Unable to allocate CONTEXT structure");
return NULL;
}
str_detach(context);
context->id=next_id++;
context->fds=NULL;
context->ready=0;
/* append to the tail of the ready queue */
context->next=NULL;
if(ready_tail)
ready_tail->next=context;
ready_tail=context;
if(!ready_head)
ready_head=context;
return context;
}
/* log the line to the UI (GUI, stderr, etc.) */
if(log_mode==LOG_MODE_ERROR ||
(log_mode==LOG_MODE_INFO && level<LOG_DEBUG) ||
#if defined(USE_WIN32) || defined(USE_JNI)
level<=opt->log_level
#else
(level<=opt->log_level &&
global_options.option.log_stderr)
#endif
)
ui_new_log(line);
str_free(line);
}
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat"
#pragma GCC diagnostic ignored "-Wformat-extra-args"
#endif /* __GNUC__ */
char *log_id(CLI *c) {
const char table[62]=
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
unsigned char rnd[22];
char *uniq;
size_t i;
unsigned long tid;
switch(c->opt->log_id) {
case LOG_ID_SEQUENTIAL:
return str_printf("%llu", c->seq);
case LOG_ID_UNIQUE:
if(RAND_bytes(rnd, sizeof rnd)<=0) /* log2(62^22)=130.99 */
return str_dup("error");
for(i=0; i<sizeof rnd; ++i) {
rnd[i]&=63;
while(rnd[i]>=62) {
if(RAND_bytes(rnd+i, 1)<=0)
return str_dup("error");
rnd[i]&=63;
}
}
uniq=str_alloc(sizeof rnd+1);
for(i=0; i<sizeof rnd; ++i)
uniq[i]=table[rnd[i]];
uniq[sizeof rnd]='\0';
return uniq;
case LOG_ID_THREAD:
tid=stunnel_thread_id();
if(!tid) /* currently USE_FORK */
tid=stunnel_process_id();
return str_printf("%lu", tid);
}
return str_dup("error");
}
DISK_FILE *file_open(char *name, FILE_MODE mode) {
DISK_FILE *df;
int fd, flags;
/* open file */
switch(mode) {
case FILE_MODE_READ:
flags=O_RDONLY;
break;
case FILE_MODE_APPEND:
flags=O_CREAT|O_WRONLY|O_APPEND;
break;
case FILE_MODE_OVERWRITE:
flags=O_CREAT|O_WRONLY|O_TRUNC;
break;
default: /* invalid mode */
return NULL;
}
#ifdef O_NONBLOCK
flags|=O_NONBLOCK;
#elif defined O_NDELAY
flags|=O_NDELAY;
#endif
#ifdef O_CLOEXEC
flags|=O_CLOEXEC;
#endif /* O_CLOEXEC */
fd=open(name, flags, 0640);
if(fd<0)
return NULL;
/* setup df structure */
df=str_alloc(sizeof df);
df->fd=fd;
return df;
}
int file_putline(DISK_FILE *df, char *line) {
int len;
char *buff;
#ifdef USE_WIN32
DWORD num;
#else /* USE_WIN32 */
int num;
#endif /* USE_WIN32 */
len=strlen(line);
buff=str_alloc(len+2); /* +2 for CR+LF */
strcpy(buff, line);
#ifdef USE_WIN32
buff[len++]='\r'; /* CR */
#endif /* USE_WIN32 */
buff[len++]='\n'; /* LF */
#ifdef USE_WIN32
WriteFile(df->fh, buff, len, &num, NULL);
#else /* USE_WIN32 */
/* no file -> write to stderr */
num=write(df ? df->fd : 2, buff, len);
#endif /* USE_WIN32 */
str_free(buff);
return num;
}
NOEXPORT void sslerror_log(unsigned long err, char *txt) {
char *error_string;
error_string=str_alloc(256);
ERR_error_string_n(err, error_string, 256);
s_log(LOG_ERR, "%s: %lX: %s", txt, err, error_string);
str_free(error_string);
}
char *fd_getline(CLI *c, int fd) {
char *line, *tmpline;
int ptr=0, allocated=32;
line=str_alloc(allocated);
for(;;) {
s_poll_init(c->fds);
s_poll_add(c->fds, fd, 1, 0); /* read */
switch(s_poll_wait(c->fds, c->opt->timeout_busy, 0)) {
case -1:
sockerror("fd_getline: s_poll_wait");
str_free(line);
longjmp(c->err, 1); /* error */
case 0:
s_log(LOG_INFO, "fd_getline: s_poll_wait:"
" TIMEOUTbusy exceeded: sending reset");
str_free(line);
longjmp(c->err, 1); /* timeout */
case 1:
break; /* OK */
default:
s_log(LOG_ERR, "fd_getline: s_poll_wait: Unknown result");
str_free(line);
longjmp(c->err, 1); /* error */
}
if(allocated<ptr+1) {
allocated*=2;
line=str_realloc(line, allocated);
}
switch(readsocket(fd, line+ptr, 1)) {
case -1: /* error */
sockerror("fd_getline: readsocket");
str_free(line);
longjmp(c->err, 1);
case 0: /* EOF */
s_log(LOG_ERR, "fd_getline: Unexpected socket close");
str_free(line);
longjmp(c->err, 1);
}
if(line[ptr]=='\r')
continue;
if(line[ptr]=='\n')
break;
if(line[ptr]=='\0')
break;
if(++ptr>65536) { /* >64KB --> DoS protection */
s_log(LOG_ERR, "fd_getline: Line too long");
str_free(line);
longjmp(c->err, 1);
}
}
line[ptr]='\0';
tmpline=str_dup(line);
safestring(tmpline);
s_log(LOG_DEBUG, " <- %s", tmpline);
str_free(tmpline);
return line;
}
strp str_dup(const char *s1)
{
strp s;
if (IS_RESID(s1))
return (strp)s1;
s = str_alloc(strlen(s1) + 1);
strcpy(s, s1);
return s;
}
void RF_destroy(RF_class *RF, WORD compact_threshold) {
OD_link *link, *next;
WORD lost_percent;
ULONG lost_space, entry, nentries;
RF_class *new_class, *old;
BYTE *RF_filename, *temp_fn;
if (RF->touched) {
lseek(RF->file, 0L, SEEK_SET);
r_write(RF->file, &RF->hdr, sizeof(RF_file_hdr));
}
link = RF->root;
while (link != NULL) {
if (link->touched) {
lseek(RF->file, link->origin, SEEK_SET);
r_write(RF->file, &link->blk, sizeof(OD_block));
}
next = link->next;
mem_free(link);
link = next;
}
close(RF->file);
lost_space = RF->hdr.lost_space;
lost_percent = (WORD) ((lost_space * 100L) / RF->hdr.file_size);
RF_filename = str_alloc(RF->filename);
mem_free(RF->filename);
mem_free(RF);
if (lost_space && (lost_percent >= compact_threshold)) {
rename(RF_filename, temp_fn = temp_filename(NULL));
old = RF_construct(temp_fn, 0);
new_class = RF_construct(RF_filename, 1);
new_class->hdr.modify_time = old->hdr.modify_time;
new_class->hdr.create_time = old->hdr.create_time;
new_class->touched = 1;
nentries = RF_entry_count(old);
for (entry = 0; entry < nentries; entry++) {
RF_new_entry(new_class, &old->file, RF_header(old, entry),
RTYP_HOUSECLEAN);
RF_set_flags(new_class, entry, RF_flags(old, entry));
}
RF_destroy(new_class, 0);
RF_destroy(old, 100);
remove_tempfile(temp_fn);
}
mem_free(RF_filename);
}
BYTE *str(ULONG value) {
BYTE temp[64];
//ultoa(value,temp,10);
sprintf(temp, "%d", value);
//snprintf(target_string, size_of_target_string_in_bytes, "%d", source_int);
return (str_alloc(temp));
}
int main(void)
{
char * str[COL_COUNT];
str_alloc(str);
out_put(str);
str_free(str);
return 0;
}
unsigned addrlist_dup(SOCKADDR_LIST *dst, const SOCKADDR_LIST *src) {
memcpy(dst, src, sizeof(SOCKADDR_LIST));
if(src->num) { /* already resolved */
dst->addr=str_alloc(src->num*sizeof(SOCKADDR_UNION));
memcpy(dst->addr, src->addr, src->num*sizeof(SOCKADDR_UNION));
} else { /* delayed resolver */
addrlist_resolve(dst);
}
return dst->num;
}
void libwrap_init(int num) {
#ifdef USE_PTHREAD
int i, j, rfd, result;
char servname[SERVNAME_LEN];
num_processes=num;
if(!num_processes) /* no extra processes to spawn */
return;
ipc_socket=str_alloc(2*num_processes*sizeof(int));
busy=str_alloc(num_processes*sizeof(int));
if(!ipc_socket || !busy) {
s_log(LOG_ERR, "Memory allocation failed");
die(1);
}
for(i=0; i<num_processes; ++i) { /* spawn a child */
if(s_socketpair(AF_UNIX, SOCK_STREAM, 0, ipc_socket+2*i, 0, "libwrap_init"))
die(1);
switch(fork()) {
case -1: /* error */
ioerror("fork");
die(1);
case 0: /* child */
drop_privileges(); /* libwrap processes are not chrooted */
close(0); /* stdin */
close(1); /* stdout */
if(!global_options.option.foreground) /* for logging in read_fd */
close(2); /* stderr */
for(j=0; j<=i; ++j) /* close parent-side sockets created so far */
close(ipc_socket[2*j]);
while(1) { /* main libwrap child loop */
if(read_fd(ipc_socket[2*i+1], servname, SERVNAME_LEN, &rfd)<=0)
_exit(0);
result=check(servname, rfd);
write(ipc_socket[2*i+1], (u8 *)&result, sizeof result);
if(rfd>=0)
close(rfd);
}
default: /* parent */
close(ipc_socket[2*i+1]); /* child-side socket */
}
}
#endif /* USE_PTHREAD */
}
LPSTR tstr2str(const LPTSTR in) {
LPSTR out;
int len;
#ifdef UNICODE
len=WideCharToMultiByte(CP_ACP, 0, in, -1, NULL, 0, NULL, NULL);
if(!len)
return NULL;
out=str_alloc(len+1);
len=WideCharToMultiByte(CP_ACP, 0, in, -1, out, len, NULL, NULL);
if(!len)
return NULL;
#else
len=strlen(in);
out=str_alloc(len+1);
strcpy(out, in);
#endif
return out;
}
gtf_file_t* gtf_file_alloc(FILE* file)
{
gtf_file_t* f = malloc_or_die(sizeof(gtf_file_t));
f->file = file;
f->k = 0;
f->state = STATE_FIELD;
f->buf = malloc_or_die(gtf_file_buf_size);
f->buf[0] = '\0';
f->quote = '\0';
f->c = f->buf;
f->field1 = str_alloc();
f->field2 = str_alloc();
f->line = 1;
f->col = 1;
return f;
}
LPTSTR str2tstr(const LPSTR in) {
LPTSTR out;
int len;
#ifdef UNICODE
len=MultiByteToWideChar(CP_ACP, 0, in, -1, NULL, 0);
if(!len)
return NULL;
out=str_alloc((len+1)*sizeof(WCHAR));
len=MultiByteToWideChar(CP_ACP, 0, in, -1, out, len);
if(!len)
return NULL;
#else
len=strlen(in);
out=str_alloc(len+1);
strcpy(out, in);
#endif
return out;
}
char *s_ntop(SOCKADDR_UNION *addr, socklen_t addrlen) {
int err;
char *host, *port, *retval;
if(addrlen==sizeof(u_short)) /* see UNIX(7) manual for details */
return str_dup("unnamed socket");
host=str_alloc(256);
port=str_alloc(256); /* needs to be long enough for AF_UNIX path */
err=getnameinfo(&addr->sa, addrlen,
host, 256, port, 256, NI_NUMERICHOST|NI_NUMERICSERV);
if(err) {
s_log(LOG_ERR, "getnameinfo: %s", s_gai_strerror(err));
retval=str_dup("unresolvable address");
} else
retval=str_printf("%s:%s", host, port);
str_free(host);
str_free(port);
return retval;
}
/* allocate local data structure for the new thread */
CLI *alloc_client_session(SERVICE_OPTIONS *opt, int rfd, int wfd) {
CLI *c;
c=str_alloc(sizeof(CLI));
str_detach(c);
c->opt=opt;
c->local_rfd.fd=rfd;
c->local_wfd.fd=wfd;
return c;
}
/* sipmly swappes the content of the two buffers */
void swap_buffers(char *fst, char *snd) {
char *tmp;
if (fst == snd)
return;
tmp = str_alloc(strlen(fst)+1);
strcpy(tmp, fst);
strcpy(fst, snd);
strcpy(snd, tmp);
free(tmp);
}
/* checks if the strings contains special double marks and then
* replace all occurences of this strings in the message */
void replace_strings(char *mes, char *strings) {
char *pos, *atr, *val, *repl, *end;
char sep;
pos=atr=val=repl = NULL;
#ifdef DEBUG
printf("replace_strings entered\nstrings: '%s'\n", strings);
#endif
if ((isalnum(*strings) != 0) &&
(isalnum(*(strings + strlen(strings) - 1)) != 0)) {
replace_string(req, "$replace$", replace_str);
}
else {
sep = *strings;
#ifdef DEBUG
printf("sep: '%c'\n", sep);
#endif
end = strings + strlen(strings);
pos = strings + 1;
while (pos < end) {
atr = pos;
pos = strchr(atr, sep);
if (pos != NULL) {
*pos = '\0';
val = pos + 1;
pos = strchr(val, sep);
if (pos != NULL) {
*pos = '\0';
pos++;
}
}
#ifdef DEBUG
printf("atr: '%s'\nval: '%s'\n", atr, val);
#endif
if ((atr != NULL) && (val != NULL)) {
repl = str_alloc(strlen(val) + 3);
if (repl == NULL) {
printf("failed to allocate memory\n");
exit_code(2);
}
sprintf(repl, "$%s$", atr);
replace_string(mes, repl, val);
free(repl);
}
#ifdef DEBUG
printf("pos: '%s'\n", pos);
#endif
}
}
#ifdef DEBUG
printf("mes:\n'%s'\n", mes);
#endif
}
CSS_class *CSS_construct(BYTE *string) {
CSS_class *CSS;
CSS = (CSS_class*) mem_alloc(sizeof(CSS_class));
if (string == NULL)
CSS->string = CSS->cur = str_alloc((BYTE*) "");
else
CSS->string = CSS->cur = string;
return (CSS);
}
char *sub_arg_in_braces(struct session *ses, char *string, char *result, int flag, int sub)
{
char *buffer = str_alloc(UMAX(strlen(string), BUFFER_SIZE));
string = get_arg_in_braces(ses, string, buffer, flag);
substitute(ses, buffer, result, sub);
str_free(buffer);
return string;
}
