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Fixed crash if uevent info isn't available

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This commit is contained in:
Sam Lantinga 2022-08-08 12:21:40 -07:00
parent 7530bd74b3
commit a547c185ce
1 changed files with 10 additions and 1 deletions
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11
src/hidapi/linux/hid.c
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@ -219,7 +219,7 @@ parse_uevent_info(const char *uevent, unsigned *bus_type,
unsigned short *vendor_id, unsigned short *product_id, unsigned short *vendor_id, unsigned short *product_id,
char **serial_number_utf8, char **product_name_utf8) char **serial_number_utf8, char **product_name_utf8)
{ {
char *tmp = strdup(uevent); char *tmp;
char *saveptr = NULL; char *saveptr = NULL;
char *line; char *line;
char *key; char *key;
@ -229,6 +229,15 @@ parse_uevent_info(const char *uevent, unsigned *bus_type,
int found_serial = 0; int found_serial = 0;
int found_name = 0; int found_name = 0;
if (!uevent) {
return 0;
}
tmp = strdup(uevent);
if (!tmp) {
return 0;
}
line = strtok_r(tmp, "\n", &saveptr); line = strtok_r(tmp, "\n", &saveptr);
while (line != NULL) { while (line != NULL) {
/* line: "KEY=value" */ /* line: "KEY=value" */