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knownnetworks: fix printing SSID in hex

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Force conversion to unsigned char before printing to avoid sign
extension when printing SSID in hex. For example, if there are CJK
characters in SSID, it will generate a very long string like
/net/connman/iwd/ffffffe8ffffffaeffffffa1.
This commit is contained in:
Jiajie Chen 2023-02-26 14:25:26 +08:00 committed by Denis Kenzior
parent 89309a8621
commit 98b758f893
1 changed files with 1 additions and 1 deletions
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src/knownnetworks.c
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@ -174,7 +174,7 @@ static const char *known_network_get_path(const struct network_info *network)
for (i = 0; network->ssid[i] && pos < sizeof(path); i++) for (i = 0; network->ssid[i] && pos < sizeof(path); i++)
pos += snprintf(path + pos, sizeof(path) - pos, "%02x", pos += snprintf(path + pos, sizeof(path) - pos, "%02x",
network->ssid[i]); (unsigned char)network->ssid[i]);
if (pos < sizeof(path)) if (pos < sizeof(path))
snprintf(path + pos, sizeof(path) - pos, "_%s", snprintf(path + pos, sizeof(path) - pos, "_%s",