#include <sys/wait.h>
#include "util.h"
#include "unaligned.h"
+#include "magic.h"
#define MIN_BUFFER_SIZE 64
#define DEFAULT_BUFFER_SIZE 4096
#define MAX_BUFFER_SIZE 131072
-static char *hexdigits="0123456789abcdef";
+static const char *hexdigits="0123456789abcdef";
uint32_t current_phase=0;
static struct phase_hook *hooks[NR_PHASES]={NULL,};
-char *safe_strdup(char *s, char *message)
+char *safe_strdup(const char *s, const char *message)
{
char *d;
d=strdup(s);
if (!d) {
- fatal_perror(message);
+ fatal_perror("%s",message);
}
return d;
}
-void *safe_malloc(size_t size, char *message)
+void *safe_malloc(size_t size, const char *message)
{
void *r;
r=malloc(size);
if (!r) {
- fatal_perror(message);
+ fatal_perror("%s",message);
}
return r;
}
+void *safe_malloc_ary(size_t size, size_t count, const char *message) {
+ if (count >= INT_MAX/size) {
+ fatal("array allocation overflow: %s", message);
+ }
+ return safe_malloc(size*count, message);
+}
/* Convert a buffer into its MP_INT representation */
void read_mpbin(MP_INT *a, uint8_t *bin, int binsize)
}
/* Convert a MP_INT into a buffer; return length; truncate if necessary */
-uint32_t write_mpbin(MP_INT *a, uint8_t *buffer, uint32_t buflen)
+int32_t write_mpbin(MP_INT *a, uint8_t *buffer, int32_t buflen)
{
char *hb;
int i,j,l;
return i;
}
-static char *phases[NR_PHASES]={
+static const char *phases[NR_PHASES]={
"PHASE_INIT",
"PHASE_GETOPTS",
"PHASE_READCONFIG",
"PHASE_SETUP",
+ "PHASE_DAEMONIZE",
"PHASE_GETRESOURCES",
"PHASE_DROPPRIV",
"PHASE_RUN",
bool_t remove_hook(uint32_t phase, hook_fn *fn, void *state)
{
- fatal("remove_hook: not implemented\n");
+ fatal("remove_hook: not implemented");
return False;
}
-void log(struct log_if *lf, int priority, char *message, ...)
+void vslilog(struct log_if *lf, int priority, const char *message, va_list ap)
+{
+ lf->vlogfn(lf->st,priority,message,ap);
+}
+
+void slilog(struct log_if *lf, int priority, const char *message, ...)
{
va_list ap;
va_start(ap,message);
- lf->vlog(lf->st,priority,message,ap);
+ vslilog(lf,priority,message,ap);
va_end(ap);
}
struct buffer_if ops;
};
-void buffer_assert_free(struct buffer_if *buffer, string_t file, uint32_t line)
+void buffer_assert_free(struct buffer_if *buffer, cstring_t file,
+ int line)
{
if (!buffer->free) {
- fatal("BUF_ASSERT_FREE, %s line %d, owned by %s\n",
- file,line,buffer->owner);
+ fprintf(stderr,"secnet: BUF_ASSERT_FREE, %s line %d, owned by %s",
+ file,line,buffer->owner);
+ assert(!"buffer_assert_free failure");
}
}
-void buffer_assert_used(struct buffer_if *buffer, string_t file, uint32_t line)
+void buffer_assert_used(struct buffer_if *buffer, cstring_t file,
+ int line)
{
if (buffer->free) {
- fatal("BUF_ASSERT_USED, %s line %d, last owned by %s\n",
- file,line,buffer->owner);
+ fprintf(stderr,"secnet: BUF_ASSERT_USED, %s line %d, last owned by %s",
+ file,line,buffer->owner);
+ assert(!"buffer_assert_used failure");
}
}
-void buffer_init(struct buffer_if *buffer, uint32_t max_start_pad)
+void buffer_init(struct buffer_if *buffer, int32_t max_start_pad)
{
+ assert(max_start_pad<=buffer->len);
buffer->start=buffer->base+max_start_pad;
buffer->size=0;
}
-void *buf_append(struct buffer_if *buf, uint32_t amount) {
+void *buf_append(struct buffer_if *buf, int32_t amount) {
void *p;
+ assert(buf->size <= buf->len - amount);
p=buf->start + buf->size;
buf->size+=amount;
return p;
}
-void *buf_prepend(struct buffer_if *buf, uint32_t amount) {
+void *buf_prepend(struct buffer_if *buf, int32_t amount) {
+ assert(amount <= buf->start - buf->base);
buf->size+=amount;
return buf->start-=amount;
}
-void *buf_unappend(struct buffer_if *buf, uint32_t amount) {
+void *buf_unappend(struct buffer_if *buf, int32_t amount) {
if (buf->size < amount) return 0;
return buf->start+(buf->size-=amount);
}
-void *buf_unprepend(struct buffer_if *buf, uint32_t amount) {
+void *buf_unprepend(struct buffer_if *buf, int32_t amount) {
void *p;
+ if (buf->size < amount) return 0;
p=buf->start;
buf->start+=amount;
buf->size-=amount;
/* Append a two-byte length and the string to the buffer. Length is in
network byte order. */
-void buf_append_string(struct buffer_if *buf, string_t s)
+void buf_append_string(struct buffer_if *buf, cstring_t s)
{
- uint16_t len;
+ size_t len;
len=strlen(s);
+ /* fixme: if string is longer than 65535, result is a corrupted packet */
buf_append_uint16(buf,len);
memcpy(buf_append(buf,len),s,len);
}
-void buffer_new(struct buffer_if *buf, uint32_t len)
+void buffer_new(struct buffer_if *buf, int32_t len)
{
buf->free=True;
buf->owner=NULL;
buf->base=safe_malloc(len,"buffer_new");
}
+void buffer_readonly_view(struct buffer_if *buf, const void *data, int32_t len)
+{
+ buf->free=False;
+ buf->owner="READONLY";
+ buf->flags=0;
+ buf->loc.file=NULL;
+ buf->loc.line=0;
+ buf->size=buf->len=len;
+ buf->base=buf->start=(uint8_t*)data;
+}
+
+void buffer_readonly_clone(struct buffer_if *out, const struct buffer_if *in)
+{
+ buffer_readonly_view(out,in->start,in->size);
+}
+
+void buffer_copy(struct buffer_if *dst, const struct buffer_if *src)
+{
+ if (dst->len < src->len) {
+ dst->base=realloc(dst->base,src->len);
+ if (!dst->base) fatal_perror("buffer_copy");
+ dst->len = src->len;
+ }
+ dst->start = dst->base + (src->start - src->base);
+ dst->size = src->size;
+ memcpy(dst->start, src->start, dst->size);
+}
+
static list_t *buffer_apply(closure_t *self, struct cloc loc, dict_t *context,
list_t *args)
{
return new_closure(&st->cl);
}
-init_module util_module;
+void send_nak(const struct comm_addr *dest, uint32_t our_index,
+ uint32_t their_index, uint32_t msgtype,
+ struct buffer_if *buf, const char *logwhy)
+{
+ buffer_init(buf,calculate_max_start_pad());
+ buf_append_uint32(buf,their_index);
+ buf_append_uint32(buf,our_index);
+ buf_append_uint32(buf,LABEL_NAK);
+ if (logwhy)
+ Message(M_INFO,"%s: %08"PRIx32"<-%08"PRIx32": %08"PRIx32":"
+ " %s; sending NAK\n",
+ comm_addr_to_string(dest),
+ our_index, their_index, msgtype, logwhy);
+ dest->comm->sendmsg(dest->comm->st, buf, dest);
+}
+
+int consttime_memeq(const void *s1in, const void *s2in, size_t n)
+{
+ const uint8_t *s1=s1in, *s2=s2in;
+ register volatile uint8_t accumulator=0;
+
+ while (n-- > 0) {
+ accumulator |= (*s1++ ^ *s2++);
+ }
+ accumulator |= accumulator >> 4; /* constant-time */
+ accumulator |= accumulator >> 2; /* boolean canonicalisation */
+ accumulator |= accumulator >> 1;
+ accumulator &= 1;
+ accumulator ^= 1;
+ return accumulator;
+}
+
void util_module(dict_t *dict)
{
add_closure(dict,"sysbuffer",buffer_apply);
}
+
+void update_max_start_pad(int32_t *our_module_global, int32_t our_instance)
+{
+ if (*our_module_global < our_instance)
+ *our_module_global=our_instance;
+}
+
+int32_t transform_max_start_pad, comm_max_start_pad;
+
+int32_t calculate_max_start_pad(void)
+{
+ return
+ site_max_start_pad +
+ transform_max_start_pad +
+ comm_max_start_pad;
+}
+
+void vslilog_part(struct log_if *lf, int priority, const char *message, va_list ap)
+{
+ char *buff=lf->buff;
+ size_t bp;
+ char *nlp;
+
+ bp=strlen(buff);
+ assert(bp < LOG_MESSAGE_BUFLEN);
+ vsnprintf(buff+bp,LOG_MESSAGE_BUFLEN-bp,message,ap);
+ buff[LOG_MESSAGE_BUFLEN-1] = '\n';
+ buff[LOG_MESSAGE_BUFLEN] = '\0';
+ /* Each line is sent separately */
+ while ((nlp=strchr(buff,'\n'))) {
+ *nlp=0;
+ slilog(lf,priority,"%s",buff);
+ memmove(buff,nlp+1,strlen(nlp+1)+1);
+ }
+}
+
+extern void slilog_part(struct log_if *lf, int priority, const char *message, ...)
+{
+ va_list ap;
+ va_start(ap,message);
+ vslilog_part(lf,priority,message,ap);
+ va_end(ap);
+}
~ian / secnet.git / blobdiff