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authorAndreas Eversberg <jolly@eversberg.eu>2013-07-04 09:44:47 +0200
committerHarald Welte <laforge@gnumonks.org>2013-07-06 23:36:16 +0200
commitf996b05dbddccb8e8788dd69777a4fedfa2373eb (patch)
treebf866bff5c88a8079edd40362b88424d072a3605 /src
parentc62a1bf4d53edec94b0db05da717d24438824357 (diff)
Fix encoding of last character at 7bit encoding function
To avoid the situation where the receiving entity confuses 7 binary zero pad bits as the @ character, the carriage return or <CR> character shall be used for padding in this situation.
Diffstat (limited to 'src')
-rw-r--r--src/gsm/gsm_utils.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gsm/gsm_utils.c b/src/gsm/gsm_utils.c
index 9569cf32..fa77eae4 100644
--- a/src/gsm/gsm_utils.c
+++ b/src/gsm/gsm_utils.c
@@ -241,6 +241,12 @@ int gsm_septets2octets(uint8_t *result, const uint8_t *rdata, uint8_t septet_len
result[z++] = cb;
shift++;
}
+ /* To avoid the situation where the receiving entity confuses 7 binary
+ * zero pad bits as the @ character, the carriage return or <CR>
+ * character (defined in subclause 7.1.1) shall be used for padding in
+ * this situation. */
+ if (shift == 7)
+ result[z - 1] |= 0x1a;
free(data);