diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/common.h | 4 | ||||
| -rw-r--r-- | src/main.c | 31 |
2 files changed, 33 insertions, 2 deletions
diff --git a/src/common.h b/src/common.h index 8f5a32b..9550400 100755 --- a/src/common.h +++ b/src/common.h @@ -12,4 +12,6 @@ struct racoon_offsets { extern char* fuck_memory_leaks; -#endif
\ No newline at end of file +void* memmem(const void *l, size_t l_len, const void *s, size_t s_len); + +#endif @@ -11,7 +11,6 @@ #include <string.h> #include <stdio.h> - #include "stage1_primitives.h" #include "stage0_primitives.h" #include "patchfinder.h" @@ -23,6 +22,36 @@ uint32_t DNS4_OFFSET; uint32_t LC_CONF_OFFSET; +// https://opensource.apple.com/source/Libc/Libc-825.26/string/FreeBSD/memmem.c.auto.html +void * +memmem(const void *l, size_t l_len, const void *s, size_t s_len) +{ + register char *cur, *last; + const char *cl = (const char *)l; + const char *cs = (const char *)s; + + /* we need something to compare */ + if (l_len == 0 || s_len == 0) + return NULL; + + /* "s" must be smaller or equal to "l" */ + if (l_len < s_len) + return NULL; + + /* special case where s_len == 1 */ + if (s_len == 1) + return memchr(l, (int)*cs, l_len); + + /* the last position where its possible to find "s" in "l" */ + last = (char *)cl + l_len - s_len; + + for (cur = (char *)cl; cur <= last; cur++) + if (cur[0] == cs[0] && memcmp(cur, cs, s_len) == 0) + return cur; + + return NULL; +} + char* fuck_memory_leaks = NULL; FILE* fp = NULL; |