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[core] fix base64 decoded size when encoded string contains padding =

This commit is contained in:
Seven Du 2024-10-09 00:34:22 +08:00
parent c402ce1dee
commit ef3bd2d8c3
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2 changed files with 44 additions and 1 deletions
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2
src/switch_utils.c
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@ -1076,7 +1076,7 @@ SWITCH_DECLARE(switch_size_t) switch_b64_decode(const char *in, char *out, switc
l64[(int) switch_b64_table[i]] = (char) i; l64[(int) switch_b64_table[i]] = (char) i;
} }
for (ip = in; ip && *ip; ip++) { for (ip = in; ip && *ip && (*ip != '='); ip++) {
c = l64[(int) *ip]; c = l64[(int) *ip];
if (c == -1) { if (c == -1) {
continue; continue;

43
tests/unit/switch_utils.c
View File

@ -80,6 +80,49 @@ FST_TEST_BEGIN(b64)
} }
FST_TEST_END() FST_TEST_END()
FST_TEST_BEGIN(b64_pad2)
{
switch_size_t size;
char str[] = {0, 0, 0, 0};
unsigned char b64_str[128];
char decoded_str[128];
int i;
switch_status_t status = switch_b64_encode((unsigned char *)str, sizeof(str), b64_str, sizeof(b64_str));
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "b64_str: %s\n", b64_str);
fst_check(status == SWITCH_STATUS_SUCCESS);
fst_check_string_equals((const char *)b64_str, "AAAAAA==");
size = switch_b64_decode((const char *)b64_str, decoded_str, sizeof(decoded_str));
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "decoded_str: %s\n", decoded_str);
fst_check_string_equals(decoded_str, str);
fst_check(size == sizeof(str) + 1);
for (i = 0; i < sizeof(str); i++) {
fst_check(decoded_str[i] == str[i]);
}
}
FST_TEST_END()
FST_TEST_BEGIN(b64_pad1)
{
switch_size_t size;
char str[] = {0, 0, 0, 0, 0};
unsigned char b64_str[128];
char decoded_str[128];
int i;
switch_status_t status = switch_b64_encode((unsigned char *)str, sizeof(str), b64_str, sizeof(b64_str));
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "b64_str: %s\n", b64_str);
fst_check(status == SWITCH_STATUS_SUCCESS);
fst_check_string_equals((const char *)b64_str, "AAAAAAA=");
size = switch_b64_decode((const char *)b64_str, decoded_str, sizeof(decoded_str));
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "decoded_str: %s\n", decoded_str);
fst_check_string_equals(decoded_str, str);
fst_check(size == sizeof(str) + 1);
for (i = 0; i < sizeof(str); i++) {
fst_check(decoded_str[i] == str[i]);
}
}
FST_TEST_END()
FST_SUITE_END() FST_SUITE_END()