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#include <stdlib.h>
#include <errno.h>
#include <stdint.h>
#include <limits.h>
#include <arpa/inet.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <fcntl.h>
#include <unistd.h>
#include "main.h"
#include "utils.h"
static unsigned total_malloc_count = 0;
static int malloc_count = 0;
LIST_HEAD(malloc_list);
struct allocation {
const char *allocfn;
const char *callerfn;
int line;
void *ptr;
size_t size;
struct list_head list;
};
static void
add_allocation(const char *allocfn, const char *callerfn, int line, void *ptr, size_t size)
{
struct allocation *a = malloc(sizeof(*a));
fprintf(stderr, "Allocation: %s:%i %s(%zu) = %p\n",
callerfn, line, allocfn, size, ptr);
a->allocfn = allocfn;
a->callerfn = callerfn;
a->line = line;
a->ptr = ptr;
a->size = size;
list_add(&a->list, &malloc_list);
total_malloc_count++;
malloc_count++;
}
void *
__zmalloc(const char *fn, int line, size_t size)
{
void *ptr;
ptr = calloc(1, size);
if (ptr)
add_allocation("zmalloc", fn, line, ptr, size);
else
perrordie("zmalloc");
return ptr;
}
char *
__xstrdup(const char *fn, int line, const char *s)
{
char *ptr;
ptr = strdup(s);
if (ptr)
add_allocation("xstrdup", fn, line, ptr, strlen(s) + 1);
else
perrordie("strdup");
return ptr;
}
char *
__xstrndup(const char *fn, int line, const char *s, size_t n)
{
char *ptr;
ptr = strndup(s, n);
if (ptr)
add_allocation("xstrndup", fn, line, ptr, n);
else
perrordie("strndup");
return ptr;
}
void
__xfree(const char *fn, int line, void *ptr)
{
struct allocation *a, *tmp;
unsigned delete_count = 0;
if (!ptr)
return;
free(ptr);
malloc_count--;
fprintf(stderr, "Deallocation: %s:%i %p\n", fn, line, ptr);
list_for_each_entry_safe(a, tmp, &malloc_list, list) {
if (a->ptr == ptr) {
list_del(&a->list);
free(a);
delete_count++;
}
}
if (delete_count != 1) {
error("Delete count is %u for ptr 0x%p\n", delete_count, ptr);
exit(EXIT_FAILURE);
}
}
void
debug_resource_usage()
{
struct allocation *a;
DIR *dir;
struct dirent *dent;
char buf[4096];
ssize_t r;
unsigned file_count = 0;
fprintf(stderr, "Still malloced %i (total %u)\n",
malloc_count, total_malloc_count);
list_for_each_entry(a, &malloc_list, list) {
fprintf(stderr, "* Lost allocation - %s:%i - ptr: %p, size: %zu\n",
a->callerfn, a->line, a->ptr, a->size);
}
dir = opendir("/proc/self/fd");
if (!dir) {
fprintf(stderr, "Failed to open fd dir\n");
return;
}
fprintf(stderr, "Open files:\n");
while ((dent = readdir(dir)) != NULL) {
if (!strcmp(dent->d_name, ".") ||
!strcmp(dent->d_name, ".."))
continue;
r = readlinkat(dirfd(dir), dent->d_name, buf, sizeof(buf));
if (r < 0) {
fprintf(stderr, "Failed to readlink %s\n", dent->d_name);
continue;
}
buf[r] = '\0';
fprintf(stderr, " * %s -> %s\n", dent->d_name, buf);
file_count++;
}
closedir(dir);
if (file_count > 4) {
fprintf(stderr, "Lost file descriptor(s)\n");
exit(EXIT_FAILURE);
}
}
uint16_t sockaddr_port(struct sockaddr_in46 *addr)
{
switch (addr->storage.ss_family) {
case AF_INET:
return ntohs(addr->in4.sin_port);
case AF_INET6:
return ntohs(addr->in6.sin6_port);
default:
return 0;
}
}
char *
sockaddr_to_str(struct sockaddr_in46 *addr, char *buf, size_t buflen)
{
char abuf[ADDRSTRLEN];
switch (addr->storage.ss_family) {
case AF_INET:
snprintf(buf, buflen, "AF_INET4 %s %u",
inet_ntop(addr->in4.sin_family, &addr->in4.sin_addr, abuf, sizeof(abuf)),
(unsigned)ntohs(addr->in4.sin_port));
break;
case AF_INET6:
snprintf(buf, buflen, "AF_INET6 %s %u",
inet_ntop(addr->in6.sin6_family, &addr->in6.sin6_addr, abuf, sizeof(abuf)),
(unsigned)ntohs(addr->in6.sin6_port));
break;
default:
snprintf(buf, buflen, "AF_UNKNOWN");
break;
}
return buf;
}
int
strtou16_strict(const char *str, uint16_t *result)
{
char *end;
long val;
if (!str)
return -EINVAL;
errno = 0;
val = strtol(str, &end, 10);
if (errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
return -EINVAL;
if (errno != 0 && val == 0)
return -EINVAL;
if (end == str)
return -EINVAL;
if (*end != '\0')
return -EINVAL;
if (val < 1 || val > UINT16_MAX)
return -EINVAL;
if (result)
*result = val;
return 0;
}
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