diff options
| author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2014-01-07 13:39:24 +0100 |
|---|---|---|
| committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2014-01-09 08:22:14 +0100 |
| commit | 26cbd459fcc7cd7bed8256a5ad078c177a7a7fe2 (patch) | |
| tree | 0de9217e0d73edd48d3a175680a6824ffd2c77ea /src | |
| parent | d4d87c5427bdf838cbfc3948bcf035e1e4036fd9 (diff) | |
sms: Fix gsm_7bit legacy functions return value
The legacy 7bit conversion functions (those without the '_n_' in the
name) gave wrong return values on 64 bit platforms due to unproper
signed/unsigned conversions and the usage of SIZE_MAX.
This patch fixes this by using a smaller max size (see
GSM_7BIT_LEGACY_MAX_BUFFER_SIZE, currently set to 64k) for the legacy
wrappers and by using unsigned int for max_septets.
In addition, there are tests now that check the return values of
legacy encoding and decoding.
Sponsored-by: On-Waves ehf
Diffstat (limited to 'src')
| -rw-r--r-- | src/gsm/gsm_utils.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/src/gsm/gsm_utils.c b/src/gsm/gsm_utils.c index 5241c91c..198ec698 100644 --- a/src/gsm/gsm_utils.c +++ b/src/gsm/gsm_utils.c @@ -273,7 +273,7 @@ int gsm_7bit_encode_n(uint8_t *result, size_t n, const char *data, int *octets) { int y = 0; int o; - int max_septets = n * 8 / 7; + size_t max_septets = n * 8 / 7; /* prepare for the worst case, every character expanding to two bytes */ uint8_t *rdata = calloc(strlen(data) * 2, sizeof(uint8_t)); @@ -683,7 +683,8 @@ uint32_t gprs_tmsi2tlli(uint32_t p_tmsi, enum gprs_tlli_type type) int gsm_7bit_decode(char *text, const uint8_t *user_data, uint8_t septet_l) { - gsm_7bit_decode_n(text, SIZE_MAX, user_data, septet_l); + gsm_7bit_decode_n(text, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE, + user_data, septet_l); /* Mimic the original behaviour. */ return septet_l; @@ -691,21 +692,25 @@ int gsm_7bit_decode(char *text, const uint8_t *user_data, uint8_t septet_l) int gsm_7bit_decode_ussd(char *text, const uint8_t *user_data, uint8_t length) { - return gsm_7bit_decode_n_ussd(text, SIZE_MAX, user_data, length); + return gsm_7bit_decode_n_ussd(text, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE, + user_data, length); } int gsm_7bit_encode(uint8_t *result, const char *data) { int out; - return gsm_7bit_encode_n(result, SIZE_MAX, data, &out); + return gsm_7bit_encode_n(result, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE, + data, &out); } int gsm_7bit_encode_ussd(uint8_t *result, const char *data, int *octets) { - return gsm_7bit_encode_n_ussd(result, SIZE_MAX, data, octets); + return gsm_7bit_encode_n_ussd(result, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE, + data, octets); } int gsm_7bit_encode_oct(uint8_t *result, const char *data, int *octets) { - return gsm_7bit_encode_n(result, SIZE_MAX, data, octets); + return gsm_7bit_encode_n(result, GSM_7BIT_LEGACY_MAX_BUFFER_SIZE, + data, octets); } |