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Fix unbounded source buffer

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source could be larger than destination

Problem reported by Coverity
CID 1090342 (#1 of 1): Unbounded source buffer (STRING_SIZE)
10. string_size: Passing string "envvar" of unknown size to "strcpy(char * restrict, char const * restrict)", which expects a string of a particular size.
This commit is contained in:
Philippe Teuwen
2013-09-19 23:48:44 +02:00
parent 9240770ab1
commit 30fdf1d9c2
1 changed files with 2 additions and 1 deletions
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3
libnfc/nfc-internal.c
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@@ -100,7 +100,8 @@ nfc_context_new(void)
char *envvar = getenv("LIBNFC_DEFAULT_DEVICE");
if (envvar) {
strcpy(res->user_defined_devices[0].name, "user defined default device");
strcpy(res->user_defined_devices[0].connstring, envvar);
strncpy(res->user_defined_devices[0].connstring, envvar, NFC_BUFSIZE_CONNSTRING);
res->user_defined_devices[0].connstring[NFC_BUFSIZE_CONNSTRING - 1] = '\0';
res->user_defined_device_count++;
}