| -rw-r--r-- | noncore/net/wellenreiter/libwellenreiter/source/wl_proto.cc | 20 | ||||
| -rw-r--r-- | noncore/net/wellenreiter/libwellenreiter/source/wl_proto.hh | 2 |
2 files changed, 14 insertions, 8 deletions
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.cc b/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.cc index 3d5a923..0630d04 100644 --- a/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.cc +++ b/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.cc @@ -6,13 +6,13 @@ #include "wl_proto.hh" #include "wl_log.hh" #include "wl_sock.hh" /* Adds a field to the buffer */ -int add_field(char *buffer, char *string, int len) +int add_field(char *buffer, const char *string, int len) { char newlen[5]; /* 3 Byte = Length */ snprintf(newlen, sizeof(newlen) - 1, "%.3d", len); memcpy(buffer, newlen, 3); @@ -21,21 +21,25 @@ int add_field(char *buffer, char *string, int len) memcpy(buffer + 3, string, atoi(newlen)); /* Return length of attached field */ return (atoi(newlen) + 3); } -int get_field(const char *buffer, char *out) +int get_field(const char *buffer, char *out, int maxlen) { char len[5]; /* Get length of value */ memcpy(len, buffer, 3); /* Copy buffer to out pointer */ - memset(out, 0, atoi(len) + 1); + memset(out, 0, maxlen); + + if(atoi(len)-3 > maxlen -1) + memcpy(out, buffer + 3, maxlen - 1); + else memcpy(out, buffer + 3, atoi(len)); /* Return length of whole field (including 3 byte length) */ return (atoi(len) + 3); } @@ -97,27 +101,27 @@ int get_network_found (void *structure, const char *buffer) /* packet type already determined, skip check */ len += 2; /* Get net type (accesspoint || ad-hoc || ...) */ memset(temp, 0, sizeof(temp)); - len += get_field(buffer + len, temp); + len += get_field(buffer + len, temp, sizeof(temp)); ptr->net_type = atoi(temp); /* Get channel */ memset(temp, 0, sizeof(temp)); - len += get_field(buffer + len, temp); + len += get_field(buffer + len, temp, sizeof(temp)); ptr->channel = atoi(temp); /* Set WEP y/n */ memset(temp, 0, sizeof(temp)); - len += get_field(buffer + len, temp); + len += get_field(buffer + len, temp, sizeof(temp)); ptr->wep = atoi(temp); /* Set MAC address */ - len += get_field(buffer + len, ptr->mac); + len += get_field(buffer + len, ptr->mac, sizeof(ptr->mac)); /* Set BSSID */ - len += get_field(buffer + len, ptr->bssid); + len += get_field(buffer + len, ptr->bssid, sizeof(ptr->bssid)); return 1; } diff --git a/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.hh b/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.hh index a196091..f645f58 100644 --- a/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.hh +++ b/noncore/net/wellenreiter/libwellenreiter/source/wl_proto.hh @@ -10,12 +10,14 @@ /* Type definitions, to be continued */ #define NETFOUND 01 #define NETLOST 02 #define STARTSNIFF 98 #define STOPSNIFF 99 +int add_field(char *, const char *, int); +int get_field(const char *, char *, int); int send_network_found (const char *, int, void *); int get_network_found (void *, const char *); typedef struct { int net_type; /* 1 = Accesspoint ; 2 = Ad-Hoc */ int ssid_len; /* Length of SSID */ |