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QR-Code-generator
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Added null checks to all public C functions.

This commit is contained in:
Project Nayuki 2017-05-06 11:34:41 +00:00
parent ed56fcfe8f
commit 73b05e36fb
1 changed files with 4 additions and 0 deletions
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4
c/qrcodegen.c
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@ -110,6 +110,7 @@ static const int PENALTY_N4 = 10;
// Public function - see documentation comment in header file.
bool qrcodegen_encodeText(const char *text, uint8_t tempBuffer[], uint8_t qrcode[],
enum qrcodegen_Ecc ecl, int minVersion, int maxVersion, enum qrcodegen_Mask mask, bool boostEcl) {
assert(text != NULL && tempBuffer != NULL && qrcode != NULL);
assert(qrcodegen_VERSION_MIN <= minVersion && minVersion <= maxVersion && maxVersion <= qrcodegen_VERSION_MAX);
assert(0 <= (int)ecl && (int)ecl <= 3 && -1 <= (int)mask && (int)mask <= 7);
@ -186,6 +187,7 @@ fail:
// Public function - see documentation comment in header file.
bool qrcodegen_encodeBinary(uint8_t dataAndTemp[], size_t dataLen, uint8_t qrcode[],
enum qrcodegen_Ecc ecl, int minVersion, int maxVersion, enum qrcodegen_Mask mask, bool boostEcl) {
assert(dataAndTemp != NULL && qrcode != NULL);
assert(qrcodegen_VERSION_MIN <= minVersion && minVersion <= maxVersion && maxVersion <= qrcodegen_VERSION_MAX);
assert(0 <= (int)ecl && (int)ecl <= 3 && -1 <= (int)mask && (int)mask <= 7);
@ -780,6 +782,7 @@ static long getPenaltyScore(const uint8_t qrcode[]) {
// Public function - see documentation comment in header file.
int qrcodegen_getSize(const uint8_t qrcode[]) {
assert(qrcode != NULL);
int result = qrcode[0];
assert((qrcodegen_VERSION_MIN * 4 + 17) <= result
&& result <= (qrcodegen_VERSION_MAX * 4 + 17));
@ -789,6 +792,7 @@ int qrcodegen_getSize(const uint8_t qrcode[]) {
// Public function - see documentation comment in header file.
bool qrcodegen_getModule(const uint8_t qrcode[], int x, int y) {
assert(qrcode != NULL);
int qrsize = qrcode[0];
return (0 <= x && x < qrsize && 0 <= y && y < qrsize) && getModule(qrcode, x, y);
}