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cast to unsigned char before ctype calls in is_hex and is_token_char (#2469)

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metsw24-max authored and GitHub committed 2026-06-09 19:34:43 -04:00
1 parent 77bdf7921a
commit 018ce8e4ca
1 file changed
+6 -5
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httplib.h
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@@ -4386,7 +4386,7 @@ inline bool set_socket_opt_time(socket_t sock, int level, int optname,
} }
inline bool is_hex(char c, int &v) { inline bool is_hex(char c, int &v) {
if (isdigit(c)) { if (isdigit(static_cast<unsigned char>(c))) {
v = c - '0'; v = c - '0';
return true; return true;
} else if ('A' <= c && c <= 'F') { } else if ('A' <= c && c <= 'F') {
@@ -8244,7 +8244,7 @@ inline bool is_multipart_boundary_chars_valid(const std::string &boundary) {
auto valid = true; auto valid = true;
for (size_t i = 0; i < boundary.size(); i++) { for (size_t i = 0; i < boundary.size(); i++) {
auto c = boundary[i]; auto c = boundary[i];
if (!std::isalnum(c) && c != '-' && c != '_') { if (!std::isalnum(static_cast<unsigned char>(c)) && c != '-' && c != '_') {
valid = false; valid = false;
break; break;
} }
@@ -8729,9 +8729,10 @@ private:
namespace fields { namespace fields {
inline bool is_token_char(char c) { inline bool is_token_char(char c) {
return std::isalnum(c) || c == '!' || c == '#' || c == '$' || c == '%' || return std::isalnum(static_cast<unsigned char>(c)) || c == '!' || c == '#' ||
c == '&' || c == '\'' || c == '*' || c == '+' || c == '-' || c == '$' || c == '%' || c == '&' || c == '\'' || c == '*' ||
c == '.' || c == '^' || c == '_' || c == '`' || c == '|' || c == '~'; c == '+' || c == '-' || c == '.' || c == '^' || c == '_' || c == '`' ||
c == '|' || c == '~';
} }
inline bool is_token(const std::string &s) { inline bool is_token(const std::string &s) {